CA1161308A - Automatic seaming method and apparatus for gored panty hoses - Google Patents
Automatic seaming method and apparatus for gored panty hosesInfo
- Publication number
- CA1161308A CA1161308A CA000347772A CA347772A CA1161308A CA 1161308 A CA1161308 A CA 1161308A CA 000347772 A CA000347772 A CA 000347772A CA 347772 A CA347772 A CA 347772A CA 1161308 A CA1161308 A CA 1161308A
- Authority
- CA
- Canada
- Prior art keywords
- suction
- station
- panty
- hose
- assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000004826 seaming Methods 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims description 17
- 210000000689 upper leg Anatomy 0.000 claims description 17
- 230000000712 assembly Effects 0.000 claims description 8
- 238000000429 assembly Methods 0.000 claims description 8
- 238000009958 sewing Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 150000002500 ions Chemical class 0.000 description 26
- 244000269722 Thea sinensis Species 0.000 description 5
- 210000002414 leg Anatomy 0.000 description 3
- 101150034533 ATIC gene Proteins 0.000 description 2
- 241000092387 Licea Species 0.000 description 2
- NAXKFVIRJICPAO-LHNWDKRHSA-N [(1R,3S,4R,6R,7R,9S,10S,12R,13S,15S,16R,18S,19S,21S,22S,24S,25S,27S,28R,30R,31R,33S,34S,36R,37R,39R,40S,42R,44R,46S,48S,50R,52S,54S,56S)-46,48,50,52,54,56-hexakis(hydroxymethyl)-2,8,14,20,26,32,38,43,45,47,49,51,53,55-tetradecaoxa-5,11,17,23,29,35,41-heptathiapentadecacyclo[37.3.2.23,7.29,13.215,19.221,25.227,31.233,37.04,6.010,12.016,18.022,24.028,30.034,36.040,42]hexapentacontan-44-yl]methanol Chemical compound OC[C@H]1O[C@H]2O[C@H]3[C@H](CO)O[C@H](O[C@H]4[C@H](CO)O[C@H](O[C@@H]5[C@@H](CO)O[C@H](O[C@H]6[C@H](CO)O[C@H](O[C@H]7[C@H](CO)O[C@@H](O[C@H]8[C@H](CO)O[C@@H](O[C@@H]1[C@@H]1S[C@@H]21)[C@@H]1S[C@H]81)[C@H]1S[C@@H]71)[C@H]1S[C@H]61)[C@H]1S[C@@H]51)[C@H]1S[C@@H]41)[C@H]1S[C@H]31 NAXKFVIRJICPAO-LHNWDKRHSA-N 0.000 description 2
- 101150039167 Bex3 gene Proteins 0.000 description 1
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 1
- 241000272470 Circus Species 0.000 description 1
- 244000205754 Colocasia esculenta Species 0.000 description 1
- 235000006481 Colocasia esculenta Nutrition 0.000 description 1
- 241000518994 Conta Species 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 241001464361 Ctena Species 0.000 description 1
- 241000282887 Suidae Species 0.000 description 1
- SCJNCDSAIRBRIA-DOFZRALJSA-N arachidonyl-2'-chloroethylamide Chemical compound CCCCC\C=C/C\C=C/C\C=C/C\C=C/CCCC(=O)NCCCl SCJNCDSAIRBRIA-DOFZRALJSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- CEJLBZWIKQJOAT-UHFFFAOYSA-N dichloroisocyanuric acid Chemical compound ClN1C(=O)NC(=O)N(Cl)C1=O CEJLBZWIKQJOAT-UHFFFAOYSA-N 0.000 description 1
- JXSJBGJIGXNWCI-UHFFFAOYSA-N diethyl 2-[(dimethoxyphosphorothioyl)thio]succinate Chemical compound CCOC(=O)CC(SP(=S)(OC)OC)C(=O)OCC JXSJBGJIGXNWCI-UHFFFAOYSA-N 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 229940061319 ovide Drugs 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 108010003641 statine renin inhibitory peptide Proteins 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B23/00—Sewing apparatus or machines not otherwise provided for
- D05B23/007—Sewing units for assembling parts of knitted panties or closing the stocking toe part
- D05B23/008—Line closers, i.e. sewing units for forming the body portion of the panty hose
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
- D05D2207/00—Use of special elements
- D05D2207/02—Pneumatic or hydraulic devices
- D05D2207/04—Suction or blowing devices
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
- D05D2303/00—Applied objects or articles
- D05D2303/20—Small textile objects e.g., labels, beltloops
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
- Treatment Of Fiber Materials (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Massaging Devices (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
Automatic seaming of gore pieces to respective incomplete panty-hoses while four sets of suction assembly travel in an intermittent fashion from station to station along a prescribed circular path of travel in order to produce gored panty-hoses, different automatic operations being almost concurrently carried out at different stations. Products of uniform quality are produced with minimal manual labour, simple construction, reduced power consumption and high production efficiency.
Automatic seaming of gore pieces to respective incomplete panty-hoses while four sets of suction assembly travel in an intermittent fashion from station to station along a prescribed circular path of travel in order to produce gored panty-hoses, different automatic operations being almost concurrently carried out at different stations. Products of uniform quality are produced with minimal manual labour, simple construction, reduced power consumption and high production efficiency.
Description
Canada F-2~01 . ~161308 I~qPROVED AUTO~hTIC SE~qI~ METHOD A~D
APPARA~US ~OR GORE~ PANTY-HOSES
, , ' , ~.
BACXG~OUND OF THE INVEN~ION
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The present invention relætes to improved method ~nd apparatus for automatically sea~ing a gore piece to the inside thigh section of a panty-hose, and more particularly re~ates to improvement in the system for seaming a gore piece to the inside thigh section of a panty-hose in an almost automatic fashion.
"
~ he conrentionai system for producing a goréa panty-hose in general t~Jo-stagea seaming operations. In the first stage, two leg sections and a ~ænty section are seæ~ea bogether by the so-called skip seaming }Jhilst le~ving an unseamea opening in the inside thigh section of an inco~plete panty-hose. Next in the second stage, s 5- parate gore piece is ~ittea to the above-aescribed thi~h section opening ana its fringe is seame~ to the unseamea sliced fringe of the thigh section, w~ich defined the opening, in order to ~orm a cornplete pan~y-hose.
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l 161308 Due to the com~licated form of the seaming li~e for coJplir~ of the gore piece with the sliced fringe on the - -inside thigh section, the secon~ staged seaming operation is extremely complicæted and difficult to practice successfully.
' - .
~ or this reæson, the seaming of the gore piece has conventionally depended upon manual operation by expert operætors. This naturally causes low productivity o~ the second stage seaming operation, î~creasedhuman labour a~d reævltant high increase in the production cost of gored-pznty-hoses.
In zadition, it i~ very ~i~ficult even ~or ~ ~ingle operator to constantly seam a gore ~iece to the correct position in thé thigh section in a correct manner since the seam~ng is depenaent upon manual operætion. This connects to inter-proaucts variance in auality o~ panty-hoses so produced. ~hen different panty-hoses ære produced by different oper~tors, the variance is fur~her am~ ied since the inter-proauc~s ~ariance is æccompanied wi~h inter-opera~ors vari~nce. T~us, in the conven~ional p~o~uction o~
gore ~anty-hoses, one canno~ ex~ect uniform quælity of the produo~s.
. ... . . .
l 161308 In order to avoid this advantage, æ number of automatic sea~ing systems for gored panty-hoses have been proposed, .. .
Due to the unavoidable presence of the above-describea complicatea seaming line, however, one,cannot expect reliable operations of the ap,paratuses for practici~g such automatic seaming systems. In oraer to obtain high reliability in operation, one needs to adopt an extremely com~licated dPs-gn for such an apparatus. ~hus., it is the sta~e of the'art that none of the conventionally proposed systems has been able to c,arry out the-second.stage av.to.~atic seaming 'operation ~lith appreciably sv~ficient results.
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, ..... .
~IY 0~ 7V~N~N
' It is.the basic object of the pre3ent invention to enable al~ost auto~atic sea~ing o~ æ g;ore ~iece to the thigh section of an incomplete pant~-hose at rem,arkably Aigh p-rodvc~ion efficiency.
It is another object of the presen~ inven~ion to ~roauce ~ored pan~y-hoses with lo~ prod~t,ction C~S'G ana e~;tre.~ely s~all inter-prod.ucts variance in quali,t~.
, l 161308 It is the other object of the prese~t invention to p~ovide an auto~a~ic apparatus ~f a sim~Jle construc~ion ~nd c~ble of Garrying out the aobve-describe~ second stage se~rning operation Y~ith high reliability in operation.
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In accoraance ;lith the 'o'asic aspect of the present i~ve~tion~ an incomp,lete panty-hose prepared in the first s~age s~a~ing o~er~tion is sucked i~to a pneum~tic suction ' tvbe and held in the pipe by assistance of hool-s arranged ~thin ~he pipe.' Concurrently ~-,ith t~is suction', the sliced fringe o~ the thigh séction o~ening is ~,olded over the outer su.rfæce of the open end of the suction tube. Kee~in this ai~osition, pneum2tic suction in the ~v.ction tubs i~
intercepted and the æuction tube Y~ith the inco~plete panty-hose is,brought to a gore piece trænsfer station. Heat cutting is applied to the ~olaed slicea l-~inge in order to obtain one or more cvts in the sliced ~inge~ A gore piece cut into a prescribea shape by'a ~ore piece ~eder assembly is passed to a gore piecetrans~er asse~bly ~Jhich in ~urn fi~s the gore piece to the cor~ect position on the inco~-ple~e panty-hose held b;~ the suc~ion tube. Next, the folded sliced edge is ~ut into a horizontal sta~e in order to bé superimposed on the fringe of ~he ~orea piece~ ~ee~ing this supe-rimposed disposition, the suction tube ~ h the incomplete panty-hose ænd the gore piece is then brough~ to l 161308 a sea~ing st2tion where a seS;Jing machine is arranged. The second stage searning is car~ied ovt by the sewing machine hile the suction tube is rotated. During subsequent tra~el of the suction tube ~Jith a sea~ed panty-hose, ~he complete panty-hose is removea out o:~ the systern via the suction tube by resumption ol the pnewnatic suction.
B~ D:E:SCRIP~IO~ 0~ TH~: DRA-;.'INGS.
~ ig. 1 is a perspéctive view of an incomplete pa~ty-ho~e having an inside thigA oening, ,., -, . . .
l~ig. 2 i8 a per~pective vievJ of a complete Panty-hose t~vith a gore piece sea~ea to its inside thigh, :E!ig. 3 is a perspective vie~ partly re.-iloved for easy -~derstanding~ of -one~ er~bodiment of the sea~in~ ap;oaratv.s in accoraance ~;rit~ the ~resent inven- ion, :Eig. 4 is a ~an vieS;J of the se~ g a~paratus sko-;m in Fig. 3, ;, _ ~ ig. ~ is a side view, pzrtly in section, of the suction ~sse~blies and their related parts used lor ~he ~e~ming apparatus sho~,n in Fig. 3, ~ig. 6 is a section taXen along a line X-X in ~ig. 5, .
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~ ig. 7 is a side view, partly in section, of the ~ransfer asse~bly and its related parts used Ior the se~ing appara~us sho~;n in ~ig. 3, .
~ ig~ 8 i9 a ~ide vie~ rtly in ~ection, of the ~eaming ~achine and its relatéa ;~arts used for the 5eaming app~ratu~ sho-.~m in Fig. 3, ~ ig. 9A throv.gh 9~ ~re perspective ~iews for sho~Jing the sequen~ial operational s~eps of the seami-n~ method in acco~ance ~/ith the present invention, Fig~ 9E is a plan view o~ the panty section of the pan~ hose producea in accordarce .Jit~ ~he se~ning ~ethoa in eccordance F~ith the presen~ invention, , .. ... ...
~igs. 10 and 11 are top and side views of a modified embodiment of the trans~e~ asse~bly sho.~n in ~ig. 7, and .
Fig~. 12 and 13 are plan ana side viel~rs of the heat cut assembly used for the se~ing assembly shown in Fig. 3.
DE~IPTION OF TH$ PREPERRED ~:BODIT~IEN~
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One ~ypical exm2;~1e of the process for prodv,cing æ
gore~ pant~-hose will hereinz~ter explained briefly i~
reference to ~ig8. '1 ana 2. The proce~s includes dual-~taged sez~ing operations. A pair o~ cglindrical stockin~
material~ 1 and 2~ each closed at the toe end,,o~ same size are superposection in the sec~ion forming the pa-nty section 6 ana the thigh section is s~iced, I~ext, the ~irst seami~g operation is a~pli,ea'to ~he supérposea stoc~ing ' materials in order to'obtain ~n i~^o~plete pan~y-hose 7a such ~s sho~n in ~ig. 1. The fro~t and rear side sliced frin~es 3 and 4 aré seamed together alo~g seam lines 3a and 4a ~'qilst lea~ing a sliced ~rin~e 5 in ~he insiae thigh section unsea~.ed.,The inco~ple~e pant~y-hose t~us includes an unseamed o~ening 5a in the inside thigh section.
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t 161308 This sort of so-called skip seaming operation can ''' easily be carried out on a Xno~-m line close such as the one disclosea in Japanese Patent 880,791.
, In the second stage seaming operætion, a gore piece 10 ~s ~itted to the above-described unseamed oPening 5a in the . ' incornplete' panty-hose'7ar and the sliced ~ringe 5 in the 'inside thigh section ana the fringe of the gore piece 10 ' are seamed together along a seaming line 8 in order ~o for~ a comple~e gored panty-hose such as sho~n in Fig. 2.
One embodiment of the seaming app~ratu~ in accordance Y~ith the presen~ in~en~ion is ~ho~ in ~ig~. 3 and ~, , .
An operation tab-e 102 is mov~tea ato~ a pedestal 'casing 101 and both are maae up of semi-circular sections ~nd integral square sections. An up~.qardly extending vertical shaft 103 is rotatably arran~ed about the ce~ter of the :
se~i-circular sec~ion o~ the o~eration table 1~2 and a c,arrier disc 104 is horizontally mountea ætop the ,~ain shaft 103. As sho~3n in Fig~ 3, four sets o~ do~n~/ardly e-~tending sv.ction,assemblies 201 are dis-Qosed to ~he cærrier disc 104 at e~ual intervals along its perip~ery~ The nv!nber of the suction asse.~hlies 2'01 is unlimitted to four , ", .. .... .. ...... . .. . .. .. .
l 161308 sets and can be chosen as desired.in accordance ~-~th re~uirement in practice. The suction assemblies 2Ql revolve, together with the carried disc 134, about the axis o~ the raain shaft 103 in the counterclockwise direction in the illustration in order to travel from the first to ~ourth operation stations I to IV provided on the operation .
table 102.' , .
In the first station I, æn incomplete panty-hose 7a.
having an inside thigh openi-ng 5a ~seé ~ig. 1) is ~anually attached to one suction-æssesmbly 201 in that station. ~he ' leg sections are pneumaticaLly sucked into the suction tube 203 ~Jhile ~he ~licea ~ringe ~ i~ folde~ over the ov.ter ~urface o~ t~e lower end o~ the suotion tube 203. Then the pneumati~ suctio~ acting on the suc~ion assembly 20 'i~ intercepted,by suitable manual s~litching. As læter described in .nore detail, hooks arranged in the suction tube 203 hola the sucked incom~lete pæn~y-hose.vJithin the sv.ction tube 203 even after the pneumatic su.ction is provisionally cæncelled.' .. In the second s~ation ~,,a gore piece 10 cu.t in~o a p-rescribed shape is passed to a ~ore piece tran3-fer assembly 401 by a gore piece feeder a3sembly 301.
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_ g _ ... . . . . . . . .
l 161308 Concurre~tly wit,l this transIer of the ~ore-~piece 10, adequate num~er of cuts are formea in the section of the .
sliced fringe 5 fol~ed over the outer surface of ~he 10.7er end of t.he suctio~ tube 203 by a heat cut assembly 501. The tr2nsfer assembly 401 fits, by its o~ rotation, the gore piecé 10 to the correct position on the incomplete pan~y-hose 7a hel:d by the suction assembly 201 and the sliced fringe 5 is returnea.to the horizontal state by, e.g. .. .
æpplication of pneumatic blo~J, in order to be superimposed upon the ~ringé of the gore piece 10 already placed in position on the second station IL
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In ~hé third ~tation DI, the ~uction a~embly 201 revol~es together with the incomplete panty-hose 7a and the gore piece 10 BO tha~ a se~ng machine 601 sezms the sliced ~ringe 5 of the incomplete panty-hose,7a Y~th the fringe of ~he gore piece 10 in order to obtain a com~lete panty-hose 7.
In the fov.rth sta~ion IV, the complete panty-hose,7 is removed of~ the suction assembly 201 to be discharged outside the system by a removing asse~bly 701.
, --, 10 --, ,, .. _........ . ... . . . . .. . .
Detailed constructions of the above-described ~arious assemblies are as follows.
.
he carrier aisc 104.
.' - ':
As sho,vm in Figs. 3 ana 5, the ~ain shaft 103 is rotatably carried, via thrust bearings 106 and 107, by a cylindrical stand 105 fixed atop the operation table 102.
~he ~in shaft 103 is cylindrical in shape and its lower ena i5 connected ,to an adeqv,ate suction source (not sho~
by a suction pipe 108. ~he pneumatic suct~,on is controlled by ordinary manual s~tching operation.
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, A drive mo~or 109 accompanying a knov~n redvction gear mechanisam is arranged under the operation table 102 ana its outpu~ shaft carried a drive ~ulleg llOa ~hich is opera~ion-ally coupled, via a drive belt 111, to a driven pulley llOb ,, mountea to the main shaf~ 103, By properly contrôlling the operation of the drive motor 109, the main sha~t'103 and the carrier disc 104 are driven fori~tex~-itte~ rot~tion, each movement covering 90 aegrees center ,angle.
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As a substitute for'the'above-described arrangement , .. .. .
for the intermittent rotation, any kno~ drive mec~anism such as ia geneva index unit is usable for ~he presen~
invention. Further, a kro~m timer or the'like is usable Eor control of the drive motor lO9 (~) The suction assembly 201.
,, -As sho~-m in Fig5. 3 ana 5, each sv.ction assémbly 201 includes a vertical suction tube 203 ~/hich is rota~2bly c~rried at its top by a boss 104a on the carrier disc 104 by means of thrust bearings 202. The suction tu.be 203 is ppen at both longitudin21 ends and a skirt-sha. ed bottom flange 205 is fi~.edly;inserted over i~s bot~o.~ end. At a level near ~he top end, a gear 204 is fixedly in~erted over the suction tube 203 ~or engagement r~th ~he la~er described suction tu~e driver assembly 50.
At least one hook 206 is ~ixed at its lo~Jer ena to 'the' inside v~all of the suctio~ tube 203, w~ich is nade of a flexible material such ~s a synthetic resin. ~he hook 206 blocks ~lling o~ the incomplete pa~y-hose 7a outside the svction tube 203 when'the pneumatic suc~ion is in~ercepted at the first station I. Preferahly, thr~e or ~ore hooks 206 are arran~ed in the suction tube 203 lor re~iable holding - l 161308 .
of the incom~lete panty-hose 7a r~thin the suction tube 203.
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:
A cover disc 120 is arrange~ on the carrier disc 104 whih~t being rotatably insertea over the top ena of the main.' sha~t 203 via a thrust bearing 121. The diameter o~ ~he. ' .
co~rer disc 120 is almost equal ~o ~hat o~ ~he carrier aisc 104. As ~a~er describea in more,detail,. the cover disc 120 is coupled to the'peaestal casing 101 by means of the r`e~oving assembly 701 ana, consequently, held sta~ionarily des~ite the rota~ion of the mæin sha~t 103.
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... .
A~ ~ho~n in ~ig. 6, circulzr hole~ 12'2 and 123 are for~ea through the cover disc 120 at positions correspondi~g to the ~irst and ~ourth stations I and IV. ~he positions of these holes 122 ana 123 ære selected so tha~ they correct-ly meet the ~op opening o~ ~ suction ~ube 203 ~Jhen ~he la~ter is in these stations I ana I~. . ' , ' . h perforated block disc 12' is arrangea in ~he - , -circular hole 122 in the firs~ s~ætion I in ~n arra~e.~e~
flv.sh ~ h ~he bot~om face of ~he cover ~i5C 120. ~he circu.lar hole 122 is conne~tea to the ~op opening of ~he mæin shæI~ 103 b~ means of a cv.rvea pipe 126. Thus, ~ .,, . . _ . .. . .. .. .... . . .... . . .
. 1161308 pnev~2tic: suction ~cts on the sv.c~ion ~ube 203 ~ia ~he cyli~dric:al main shaft 103, ~he curved pipe 126 ana the per.orætea block diso 124.
. . ' . ' ' :
(3~ ~he suc~ion ~ube driver assembly 50.
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As sh~on in ~igs. 3 2nd 5, a drive motor 53.is *ixed, by ~e~ns of a bracket 51, to the cover aisc 120 æ~ a posi~ion corréspo~di-ng to ~he third station ~I. A gear 55 ~ixea to its ou~put sh~t iSengage~blç~th the .gear 204 on tke suction tube 203 ~lhen thé la~ter is at the ~hird s~ation DI. As the dri~e motor ~3 i~ activa~ed, the suctio~.
tv.'oe 203 starts to rotæ~e abov~ i~s o~m æxis~
.
(4) ~he gore piece feeaer assembly 301 a~a the gore piece transfer assembly 401.
The de$ailed construc~ions of the assemblies are sh~70n in ~igs. 3, 4 ana 7. ~. -.
~ n ~he second sta~ion ~, a gore piece lO cut into a prescribed sh~pe is ~ea by ~he ~eeder zssr.lbly 301 to ~he ~r~ er ~ssembly 401 ~/hic~ in ~urn ~its the ~ore piecs 10 , l 161308 to the correct position on the inco~plete panty-hose 7a held by the suotion assembly 201 so that the slicea lringe 5 ana the ~ringe of ~he gore piece are superi~posed in a horizontal state.
As sho~m in ~igs. 3 and 4, the ~eeder assembly 301 includes a feea reel 303 of the gore piece band ~lhich is conveyed towards the tr2nsler assembly 401 by means o~ feed rollers 306 a~a 307 via guide and da~cerrollers 304 and-305.
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A ~up~orti~ 5t2,na 310 is arranged on the ~v.are ~ection of ~he operation table 102 z,na bears a ~rive motor 311 ~lhich is opera~ionally couplea to t~e réel 303 ana the rollers 304, 306 and 307 by mean~ 0~ ordinary pulleys and a ~rive belt. U~on each lntemittent rotation of the drive motor 311, the gore phece band i5 delivered from the reel 303 by ale~ correspo~di~g to one ~ore piece 10. A pair of vertically s~i~table cutters 312 ~n~ 313 are arranged a~ a position bet~/een the rollers 306 ana 307 in order to . . .
cu.t ovt the sidefrin~e~ of tke gore piece bana in a trian~ular shape during the dFJell of the in~er~ittent delivery of the band. ~oncurre~tly ~/it~ this procedvre, a cut~er 314 arranged on the stalld 310 in fron~ of the feed roller 307 shifts do~mwards and fo m a ~traight cu~
.
, .. . . .. . . . . .
in ~he center o~ the b~n~ in order to fo-~ o~ gore piece 10 of 2 ~rescribed shape, e.g. a diamond shape.
The construction of the gore piece transLer assembly ¢01 ~,ill,hereinafter be explained in more detail in re~erence ' ~o ~i~s. 4,,7 and 9C. A cylindrical bracket 4~3 is fixed ' to a ~rescribea position on the operation table 102 an~
rot2tæbly caries a drum æsse,~bly 404.
~ ke drum zssembl~ 404 includes a c~lindric2,1 sup-~ort ~ha:~t ~,05 ha~ a lo~er ~ec~ion rotatably in3erted in~o the b-~2c'~et 403, ana a pair o~ hollo~ suppo-rt Zr~QS 406 e:~er2ing horizontally ænd~i-~ opposite directions -lro~ the su~ort s~a~t 405 at a level abové the opera~ion tæble 102.
~ach support arm 406 carries at its outer end a cylindrical, up~i~h~ shaLt 407 having æ to~ ~la~e.' A ~orizo-n~al semi-circular plate ~08 is loca~ed o~ the to~ flæ-4~e ol éæch u~-ri~t shaft 407.,The Pair ol semi-circul~r pla~es 408 îaces each o~her alo~g their s~right ed~es ~hilst le~vi-ng' æ sli~ht gap~ 3ach seJ~i-ci~cv,lar ~late ~,08 is ~ovi~ea ~ith n~merovs suc~ion holes 408a ~o~med tkere~llrougk.
.
~ ~er c~ der ~11 o~ a double dr~ ~' 3 inse:~te~
, , .. .. .. ... . . ... . .. . .. . . .... .. .
l 161~08 over each up~ight sha-l~ 407 ~nd a co~pression spril~æ ~14 is im~osed between the bo~tom. W2~1. 0~ itS outer cJlinder 412 æ~d the iower ~ace o-f the associated semi-circvlær plate 408 ~hilst coaxiæ~ly surrov.ndin~ the upri~h~ shaft . ,-407. ~ha* is, the,double drv~ 410 is elastically pressed. ~ , towaras t,he associzted support arm 406. A ~lange 413 is ~ormea atop the ou~er cylinder 412 ænd ~ixealy cæ-rries the assiciatedJseme-circular plæ~e 408.
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In the secon,a station, a ~neumatic cylinaer 415 is , , '~ixed to the lower ~zce o~ the o~eration'tæble lO~ an~ its piston rod 415a-extends up~/æras slidabl~ tkrov~h.~he operation ~able 102 in order ko ~ace the lower ~æce o~ the aOv~le a~ 410. ~onsea,uentl~J, as the piston ro~,415~ is ' drivén for up~lard mo~ement b~ the pnev~ætic cylin~er 415, the dov,ble d-~um 410 is ~orced to move up~..æ,ras over æ
prescribe~'~istance ~hilst overcoil1ing repulsion o~ ~he co~ression s~ing 414. The ~ ~tea ~ositio:~ o~ the dovble ' ' aru~ 410 is sho~i.n ~ h chain lines in Fig. 7. ' ~ elations~ip in position bet~.-/ee-n the pair o~ ~o-~ble dru~s 410 in the secona stætion ~ i5 slo~m in Fig. 7. lhæ~
is, ~he ri~ht side doL~.ble ~.-~u~ 413 ~aces the dormst-eam ter..~inal o~ the gore iece ~ee~er as~e5~bly 30l in order , ............ .
~ 161308 to receive a ~ore ~iece on its seEi-cir~ular plæ,te ~ro~
~he feeder assembly. ~he le~t side double drum in the second stætion ~ is located in axial alig~ent ~lith the ~uction tubé 203 of the suction asse.~bly 201 in thæt ~ation. In this state, a slight gsp is left between ~he ~emi-circular plate 408 and the lower end of the bottom flange 205 on'the suction tube 203.
- : ' At a level beloYI the cylindrical bracket 403, a pulley 402 is fixe~l~ inserted over thé support shaft 405 and ope-ra~ionall~ coupled to a ~ul~ey'421 on ~he.~ain shaft 103 (see Fig. 3) by means o~ a drive belt 422. ~s the ~ain ~ha~t 103 i~ arive~ for rotation by ~he drive motor 109, the ~rum asse,~bly ~04 ~th the dovble drvr~s 410 rotates about the ax~-o~ the support shaft 405,in a direction sho~J~ by a~ ærro~ in Fig. 4; i.e. counterclock~-~se. The ratio in aismeter between the two pulleys 420 æ~d, 421 is desi~nea 1:2 so ths,t ~he dru~'assembiy,404 com;~letes z 180 , degrees'rotzt on upon 90 degrees ro~ation of ~he mæin sha~ 3. ' - , ''-- ' ' As the ~lai~ shaft 103 rot~*es over 9,0 aegrees, ez,ch suc~ion assem,bly 201 travels ~ro~ ~ st~tion to ~n ædjacent s~æ,tion and ~he pair of do~ble dru~s 41~ zttern2,te in position in order to rest in ~he new positions,. During ~he dwell, a gore piece lO is p2ssed to the right side dovble drum 410 by the ~eeder assembly 301 ~-.rherea~ the left side double' drum 410 a83igns a gore piece to ~he suotion assembly 201 in second station II. , ~ ' , .
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The l~o~ver end of the sup~ort,shaft 405 is coupled in æir- , tigh'b to a co~ection pipe 425 ~-Jhich is in turn co~nec~ed to '' he suction pipe 8 (see Fig. 53 via a valve 426. The valve 426 talces the ~orm o~ a normally closed,valve ~lhich is ~ade open only ~lhen the arum assembly 404 perlorms the 180 degree~ rotætion, This opening of the valve.426 all,ows apnlicatio~o~ pneumatic ~uction to the ~ore piece lO on ths a~sociatea ~emi-circular plate 408 viæ the eonnectio~l pipe 425, the support a~m 405, the support arm 407, a slit 407a in the upright sha~t 407, the aouble drum 410 and the suction holes 408a o~ the se.~i-circular.plæte 408, thereby e~e~tivel-~
blocking accidental ~allin~ of the gore piece during movement o~ the associatea drwm assembly 404.
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As shorm in ~ig. 3, a ~ gv,ide pl~te 423 e.ctenas bet-.
~Jeen the second.ana thira Sb~tiOYls II ~nd III zlong ~he tr~velling path of the suction asse~blies 201. Tle ~bOp face OL this guide pla,te 423 i5 ~lvsh ~th those o~ the ~emi--- 19 -- . .
- l 161308 circular plate 408 in the lifted position (see ~ig.;7) ~nd the se~in~ table in the third station III. As the suc~ion assembly 201 tr2vels fron the second to the third station ~ith the gore ~iecé 10 passea by.the feeder as~embly 401, ~he gore piece 10 sliaes on and along the guide plate 423, ~here~ore, the top ~ace of the guide plate 423 should pre-~erably as smooth as possible. Y1hen necessary, any smoothing ~inish ~ay be applied to its top faceO
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(5) Heat cut assembly 501.
~oncvrrently ~ith trans~er o~ the gore piece ~ 'he second stætion II, cuts are formed in the sliced fringe 5 ~ol~ea over the suction tube oottom ~lange 2~5 by hezt cut.
In advænce to the subseauen~ sear.1ing on the se~-~n~ machine 601~ ~he slicea ~ringe 5 ha~ to be returned to the horizon~al sta~e by means of, for exa~ple, air blow in order t~ be super-imposed on the ~ringe o~ the gore piece 10 locatea on the se~ng tzble. Presence of the above-described cuts enables easy ænd success~ul ~attening o~ the sliced fringe 5. It is not zl~lay ~ecessa~g to complete this flattening in the third station III. After the heat cut is complete, the pne~matic flz~tening may be carried out in-the second station II zlso.
It is only reuirea t~a~ ~he slicea frin~e 5 s~ould be hori-zontally svperimposea v.pon the ~rin~e of the gore piece in a~væncé to the sezming orerztion z~ the third s~ation I~I. -~ 161308 The heat cut assembly 501 ~ill now be explainea in ~ore detail whilst referring to Figs. 3, 4, 12 and 13.
At a position facing the second station II, a bracket ~03 i8 ~ixed to the operætion table 102 and carries,a pneu-matic cyiinder 505. A rack 507 i8 ~ixed at its one lon~itudi- . , nal end to the outer end a piston rod 50~a o~ the cylinder 505. . .
An arm 509 is fixea to.the other end o~ the rack 507 and carries an electric heæt cutter 511. ~he rack 507 is in en~a~ement with a pinion 513 ~-~hich in turn eng~ges ~ith a gear 51~'on ~-the opposite side of t~e rack 507. An arm 515 e-~.tends ~rom the pinion 513 in a direction substa~tially normal to the' longitv.ainal airection o~ the -rack 507. ~ikewise, ~n ar~ 521 ~Y~ten~ from ~he gear ~19 in alignment ~th the arm 515. The arms 515 an~ 521 carry electric heat cutter~ 517 and ~23 at their ~ree en~s, The arms and the cutters, assume the inopera~ive position sho~-~ with sol;d lines in Pigs. 12 and 13 ~hen the pneum~tic cylinder 505 is inoper~tive. As the cglinaer 505 o~erates, the ~iston roa 505a projects and ~he heat cutter 511 ~ith the ,arm 509 moves towards the suction assembl~ 201 in the second station II and arrives a~ the operative position sho~ ~th chain lines. Concurrentl~, arms 515 and ~21 se~ng to~.lards the suction assembly 201 ~lith their heat cu~'ters 517 an~ 523 in order to a-rrive at the.'operative positions sho~m ~.~Jith _.21 ~
.. . . .. . . . ... . .
chain lines also. At the operative ~ositions9 the heat cutters 511, 517 and 523 touch the sliced ~ringe 5 on the suction tube bottom flange 205 in order to form cuts at æbo~ 120 degrees in~ervals~ As the piston rod 505a receds i~to the pneumatic cylinder 505, arms ana heat cutters all resume the inoperative positions ~he number of the heat cutters, i.e. the number of cuts formea in the slicea fringe, is not limited to three, Ho~rever, in consideration of simplicity in construction and easiness in flattening operation, it is ædvantageous ~o use three sets of heat cutters.
(6) A sliced ~ringé direction adjuster assembly 800.
, A~ describea already, the trans~er a~serQbly 401 receives a gore piece ~rom the ~eeder assembly in order to transfer it to the suction as~embly 201 located at second ~tation II so th~t the slicea fringe 5 o~ the incomplete pan~y-hose 7a i8 svperimposea upon the fringe of the gore iece 10. ~or correct seaming on the sevling rnachine 601, the sea~ing line on the gore piece lO should mee~ tha~ on the sliced fringe 5 ~ h- -out æny bias. -In general on a gore -piece 10 made of cotton --or the like, its stretch is larger in the ~l2rp direction than in the ~Jeft direc~ion. Therefore, it is advan~ageovs tha~ the arp direction on the gore piece 10 ~hould meet ~hzt o~ the seaming line on the sliced ~ringe 5.
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This adjustment is carried out by the direction adjuste~
asse~bly 800 sho~Jn in ~igs. 10 2~d Il.
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h bracket 801 is mou~ted to the top end of the cylindrical stand 105 carries a drive motor 802 ~ich is driven ~or rotæ- ~
kion by an eIectric signal from a later described photoel.ectric #ensor 804.. A roller 803 is fixed to the output shaft of the dri~e mo~or 802 in pressure contact ~-litk ~he outer wall 205a of the bo~tom flange 205 on the suction æssembly 201 locatea at the second station II. As the roller 803 rotates in the direction o~ an arrow 'tc", the flange 205 rotæte in the direc-tion o~ an opposite ærrow "d" in ~i~. 10 due to the above-de~c~ibed pressure conta¢t.
, ~ he ~hotoelectric sensor 804 is arr~nged a~ a proper position on a stræight ~orizontal line passi~g through the center axis ol the suction assembly 201 located i~ the secona sta~ion II. ~he sensor 804 détects presence o~ thé sliced ~ringe ~ ana the seam lines 3a and 4a on the incomplete panty-hose 7a held on the suction assembly 205 in the secand station II. - .
As the ~ensor 804 detects presence o~ the sliced ~ringe 5, its electric detection signal drives the motor 802 ~or rot~tion~
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~he moto~ 802 ceæses its rota~ion, ho~-lever, as the sensor 80~, Qetects presence o~ the sez~ Iines 3a and 4a. In other ~lords, the sensor 804 detects presence OL '~he sliced f:~inge 5 ~hen the ~eam lines 3a and 4a axe o~ the str~ig~t line X
and the raotor 802 is driven for rotation~ As a consea,uence, the ~oller 803 rotates in the direction "cl' and the flange ' 205 in the ~irection "d". As the seam lines 3a ana 4a meet .
the str~ight line ~, the sensor 804 detects this ena the motor 802 ceases its rotation. '.7hen the seam lines 3a and -, 4a a~e on the straight line ~ from the beginning, the motor 802 does not rotate zt all. In either case~ the seam lines 3a a~ 4a are regis~ered at the straight line X by the sensor 804 before the sliced fringe 5 and the' frin~e of the gore piece,lO are ~upePimpo~ea, , . ' . .' .
(7~ ~he sewing machi~e 601.
, ~he.se~Jing mac~ine 601 is arrangea in the thira 5tation III in oraer to se~m the sliced fringe 5 of the inco~plete panty-hose ja held by the suction assembly 201 ~-~th the fringe.
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of the gore piece 10. The construction is sho~n i~ Fig, 8.
, -At the moment the suction assembly 201 Y~th the i~-complete panty-hose 7a and the gore piece 10 zrrives at ~he t~ird station III a~ter its trav,el along the ~ui~e plate 423, , . - 24 -_ .. . . . .. .. .... .
l 161308 the gore piece 10 is in the horizon~al state but ~he sliced fringe 5 is folded o~er the suction tube bottom 1ange 205 Prior to starting of the seaming operation, the sliced ~ringe 5 needs to be returned to the horizontal state for ~nug ~uper~mposition ~ith the fringe o~ the gore piece 10.
~his flatteni~g is car~ied out on the sewing table 6030' .
. . - -, One example of such flattening is carried out'by an air .
'ejection nozzle 604 arrangea new the sewing machine 601 P~ith its ejection mouth closely facing the outer wall of the suc-tion tube bottom flange 205. Air blow by the nozzle 604 .
flættens the slicea fringe 5 on the gore piece 10~
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Another ex~mple o~ ~uc,h ~lattening i~ carriea out by an air suction nozzle 605 loc~tea at an upstrea~ position of a sewing neeedle 601a,on the sewing machine 601. Air suction by the nozzle 605 ~la*tens the slicea ~ringe 5 on the gore piece 10. ' :, . . .
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These air nozzles 604 ana 605 may be used in combina-~ion.
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It is also fea5ible to,arrange these air nozzle~ 604 - 25 - ' ' . . ..... ... . . . .
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l 161308 and 605 at the second station. ~I in order to practice the fl2ttening of the slicea *ringe just after tr~nsfer of the go-e piece 10 to the suction asse.~bly 201. In t'~is case, ho~rever, there is a likelihood that the once flæ~ened sliced fringe 5 may loose its correctly superi~posea state aue to an~ unexpectea shock to be causea during its ~rævel to the third station I~I rJith the suction assembly 201. In order to ævoid such a trov.ble, it is r~her aava~ageou~ to carry out the flattening o~ the slicea fringe 5 at the third st~tion TII.
(8~ ~he removing assembl~J 701.
The complete pant~J-ho3e 7 ~or~ed æ~ ~he thira ~tation XII
is re.Qoved off the ~uction assembl~J 2~1 ~t ~he ~our~h s~ation IV in order ~o be dischærged ou~side~ the sgstem.
', ' '' ' , ,', ~he removing assembly 701 is sho~-m in det7ii in ~ig. 3.
' One end OT a delivery pi~e 7~3 is covpled to ~he circv.lar .hole 123 (see Fig. 6) in the cover aisc i20~ The other ena -o~ e aelivery pipe 733 is proviaed ~-r~h æ delivery movth 704. A pair ol ve-rticælly s~acea brac~ets 705 are disposed to ~he cover disc 120 æn~ the o~erætion tzhle 10~ in axial , _ 26 --l 161308 alignment, ~espectively, in oraer to hold a suction PiPe 706 verticall~. ~h;s connection holds the cover disc 120 in-movable ~th respect to the ~ain sha~t 103 which rot~tes intermittenlly~ The upstre~m end o~ this suction pipe 706 is coupled to the suction tube 108 ~lith the dormstream ena to the delivery mouth 104.
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,' ,- '.' ~ hus, pneumatic svction acts on ~he complete panty-hose 7 ~ithin the suction tube 201 via the suction pipes 108 and 706, the delivery mouth 704, the delivery pipe 7C3 ana the ¢ircular hole 123 As a consequence ~he complete panty-hose 7 is discharged outside the system via t~le circul~r hole 123, the deliverx pipe 703 ænd the delivery mov~h 704.
, Oper&tion of ths æutomatic seaming apparatus in accor- .
dance ~lith ~he pres.ent invention and equipped ~-nth the abové- -described assemblies is as hereinæfter described~ re~erenc~-being made to ~igs. 9A through 9E. .
-- -- --In the first stztion I, pneu.-natic suction zcts on a suction assembly 201 by ma~ual s~tcqing so thæt, as sho~-m in Fig. 9A, the leg sections o~ an incomplete ~nty-h~5e 7a are sucked into the suction t~be 203 and the inside ~high ~licea ~rin~e 5 is manv.allg ~oldea over the bottom llange 205. Even a~ter th~ pneumatic suction is intercepted, the inco~plete - ~7 -l 1~1308 panty-hose 7a is held on the suction assembly 201 by the hooks 206 (see Fig. 5). The suction assembly 201 then travels towards the second station II whilst carrying the incomplete panty-hose 7a as shown in Fig. 9B.
In the second station II, the feeder assembly 301 passes a sheet of gore piece 10 cut into a prescribed shape onto one double drum 410 of the transfer assembly 401. Thereafter, the valve 426 is rendered open in order to suck the gore piece to the top face of the associated semi-circular plate 408. In synchronism with the travel of the suction assembly 201 to the second st~tion II, the double drum 410 revolves about the axis o~ the support sha~t 405 over 18~ deKrees and is reKistered at a position below and in axial alignment with the suction assembly 201 arrived at the second station II.
Further, by operation of the direction ad~uster assembly 800, the angular position of the sliced fringe 5 on the bottom flange 205 is adjusted with respect to the gore piece 10.
At this moment, the valve 426 is closed in order to cancel the pneumatic suction working on the gore piece 10 on the semi-circular plate 408 and the pneumatic cylinder 415 starts to lift the double drum 410, thereby placing the gore , . ~
l 1~1308 piece 10 on the semi-circular place 408 into pressure contact ~th the bo~to~ of the sliced fringe 5 on the ~lan~e 205 as sho~n in Fig. 9C.
Concurrently ~-~th this procedu.re, the heat cut asse~bly 501 ~orms cvts in the sliced fringe 5.
As these operations are co.~plete, the suction assembly 201 ~th the incomplete panty-hose 7a travels to~lards the thira-station IIl. ~he gore piece 10 on the semi-circvlar plate 408 in $he li*tea position slides to~7ards the ~e~n~ table 603 along ~he guide plate 423 due to the above-aescribed pressure contact.
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In the thira station III, the sliced ~ringe ~ is turnéa bac~ to the horizontal state by operation of the air ejectio~
nozzle 604 and/or t~e air suction nozzle 605 in or~er to be superimposed on the ~ringe of the gore piece 10. A~ this moment, the suction tube driver assembly 50 oper~es to rotate the suction tube 203 ~th the incomplete panty-hose 7a an~
the gore piece 10 over 360 degrees so that the se~.ing machine 601 seams the sliced fringe 5 together wQth the fringe o~ ~he gore piece 10. This procedure is sho~m in Fig. 9D. Con-currently with this sea~ing, the svrplus sections o~ the slicea l 161308 fringe 5 and the gore piece 10 are cut of~ ænd a com-~lete pznty-hose 7 such as sho~m in Fig. 9E lS obtained ~rlhi~h include~ an almost round gore lOa seamed to its thigh ,, .
~tion along the seam line 8;
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As ~he seaming iæ complete, the suction assembly 201 travels toY~ards the fourth station IV whilst carryi~ the complete panty-hose 7 inside. ~he removing assembly 701 thereupon operates to remove the panty-hose 7 of~ the suction asse~bly 201 and discharge outside the sys~em.
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In ac¢ordanc~ ~ith the pre3ent invention almost all ope-r~tio~ are carriea out quite automa~ic~lly expec~ for ~he initial manual at~achiment of the incomplete pan~y-hose to the suction assemblg in the ~irst station. This naturally results in rem~rkable saving in læbour~ hi~h pro~uction el~ici- -ency and low proauction cost.
' Operations done oy the ~V ~om2tic asserl~li?~ assures pro-duc~1on of pan~y-~ose5 of u~i~o-~rl ciuali~ ænc, ~lla;qe.
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~he limited ap~licætion o~ ~nev~a~ic uc~ior orl-~ in the *irst station ~or holdin~ of the incomplete pan~y-hose results .
- I 1613~8 in reducea po~er consumption ~nd simple ~pin~ for; ~he pnew~a~ic syst em 0 .
A8 the suction assemblie~3 tra,vel.along a circular endless path, the apparatus is very compact in construction a~d less npaoe i~ n-oessary rOr its Installation.
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' ,, _ 31 _
APPARA~US ~OR GORE~ PANTY-HOSES
, , ' , ~.
BACXG~OUND OF THE INVEN~ION
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The present invention relætes to improved method ~nd apparatus for automatically sea~ing a gore piece to the inside thigh section of a panty-hose, and more particularly re~ates to improvement in the system for seaming a gore piece to the inside thigh section of a panty-hose in an almost automatic fashion.
"
~ he conrentionai system for producing a goréa panty-hose in general t~Jo-stagea seaming operations. In the first stage, two leg sections and a ~ænty section are seæ~ea bogether by the so-called skip seaming }Jhilst le~ving an unseamea opening in the inside thigh section of an inco~plete panty-hose. Next in the second stage, s 5- parate gore piece is ~ittea to the above-aescribed thi~h section opening ana its fringe is seame~ to the unseamea sliced fringe of the thigh section, w~ich defined the opening, in order to ~orm a cornplete pan~y-hose.
-- 1 -- . , ,, ' ~
l 161308 Due to the com~licated form of the seaming li~e for coJplir~ of the gore piece with the sliced fringe on the - -inside thigh section, the secon~ staged seaming operation is extremely complicæted and difficult to practice successfully.
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~ or this reæson, the seaming of the gore piece has conventionally depended upon manual operation by expert operætors. This naturally causes low productivity o~ the second stage seaming operation, î~creasedhuman labour a~d reævltant high increase in the production cost of gored-pznty-hoses.
In zadition, it i~ very ~i~ficult even ~or ~ ~ingle operator to constantly seam a gore ~iece to the correct position in thé thigh section in a correct manner since the seam~ng is depenaent upon manual operætion. This connects to inter-proaucts variance in auality o~ panty-hoses so produced. ~hen different panty-hoses ære produced by different oper~tors, the variance is fur~her am~ ied since the inter-proauc~s ~ariance is æccompanied wi~h inter-opera~ors vari~nce. T~us, in the conven~ional p~o~uction o~
gore ~anty-hoses, one canno~ ex~ect uniform quælity of the produo~s.
. ... . . .
l 161308 In order to avoid this advantage, æ number of automatic sea~ing systems for gored panty-hoses have been proposed, .. .
Due to the unavoidable presence of the above-describea complicatea seaming line, however, one,cannot expect reliable operations of the ap,paratuses for practici~g such automatic seaming systems. In oraer to obtain high reliability in operation, one needs to adopt an extremely com~licated dPs-gn for such an apparatus. ~hus., it is the sta~e of the'art that none of the conventionally proposed systems has been able to c,arry out the-second.stage av.to.~atic seaming 'operation ~lith appreciably sv~ficient results.
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~IY 0~ 7V~N~N
' It is.the basic object of the pre3ent invention to enable al~ost auto~atic sea~ing o~ æ g;ore ~iece to the thigh section of an incomplete pant~-hose at rem,arkably Aigh p-rodvc~ion efficiency.
It is another object of the presen~ inven~ion to ~roauce ~ored pan~y-hoses with lo~ prod~t,ction C~S'G ana e~;tre.~ely s~all inter-prod.ucts variance in quali,t~.
, l 161308 It is the other object of the prese~t invention to p~ovide an auto~a~ic apparatus ~f a sim~Jle construc~ion ~nd c~ble of Garrying out the aobve-describe~ second stage se~rning operation Y~ith high reliability in operation.
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In accoraance ;lith the 'o'asic aspect of the present i~ve~tion~ an incomp,lete panty-hose prepared in the first s~age s~a~ing o~er~tion is sucked i~to a pneum~tic suction ' tvbe and held in the pipe by assistance of hool-s arranged ~thin ~he pipe.' Concurrently ~-,ith t~is suction', the sliced fringe o~ the thigh séction o~ening is ~,olded over the outer su.rfæce of the open end of the suction tube. Kee~in this ai~osition, pneum2tic suction in the ~v.ction tubs i~
intercepted and the æuction tube Y~ith the inco~plete panty-hose is,brought to a gore piece trænsfer station. Heat cutting is applied to the ~olaed slicea l-~inge in order to obtain one or more cvts in the sliced ~inge~ A gore piece cut into a prescribea shape by'a ~ore piece ~eder assembly is passed to a gore piecetrans~er asse~bly ~Jhich in ~urn fi~s the gore piece to the cor~ect position on the inco~-ple~e panty-hose held b;~ the suc~ion tube. Next, the folded sliced edge is ~ut into a horizontal sta~e in order to bé superimposed on the fringe of ~he ~orea piece~ ~ee~ing this supe-rimposed disposition, the suction tube ~ h the incomplete panty-hose ænd the gore piece is then brough~ to l 161308 a sea~ing st2tion where a seS;Jing machine is arranged. The second stage searning is car~ied ovt by the sewing machine hile the suction tube is rotated. During subsequent tra~el of the suction tube ~Jith a sea~ed panty-hose, ~he complete panty-hose is removea out o:~ the systern via the suction tube by resumption ol the pnewnatic suction.
B~ D:E:SCRIP~IO~ 0~ TH~: DRA-;.'INGS.
~ ig. 1 is a perspéctive view of an incomplete pa~ty-ho~e having an inside thigA oening, ,., -, . . .
l~ig. 2 i8 a per~pective vievJ of a complete Panty-hose t~vith a gore piece sea~ea to its inside thigh, :E!ig. 3 is a perspective vie~ partly re.-iloved for easy -~derstanding~ of -one~ er~bodiment of the sea~in~ ap;oaratv.s in accoraance ~;rit~ the ~resent inven- ion, :Eig. 4 is a ~an vieS;J of the se~ g a~paratus sko-;m in Fig. 3, ;, _ ~ ig. ~ is a side view, pzrtly in section, of the suction ~sse~blies and their related parts used lor ~he ~e~ming apparatus sho~,n in Fig. 3, ~ig. 6 is a section taXen along a line X-X in ~ig. 5, .
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~ ig. 7 is a side view, partly in section, of the ~ransfer asse~bly and its related parts used Ior the se~ing appara~us sho~;n in ~ig. 3, .
~ ig~ 8 i9 a ~ide vie~ rtly in ~ection, of the ~eaming ~achine and its relatéa ;~arts used for the 5eaming app~ratu~ sho-.~m in Fig. 3, ~ ig. 9A throv.gh 9~ ~re perspective ~iews for sho~Jing the sequen~ial operational s~eps of the seami-n~ method in acco~ance ~/ith the present invention, Fig~ 9E is a plan view o~ the panty section of the pan~ hose producea in accordarce .Jit~ ~he se~ning ~ethoa in eccordance F~ith the presen~ invention, , .. ... ...
~igs. 10 and 11 are top and side views of a modified embodiment of the trans~e~ asse~bly sho.~n in ~ig. 7, and .
Fig~. 12 and 13 are plan ana side viel~rs of the heat cut assembly used for the se~ing assembly shown in Fig. 3.
DE~IPTION OF TH$ PREPERRED ~:BODIT~IEN~
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One ~ypical exm2;~1e of the process for prodv,cing æ
gore~ pant~-hose will hereinz~ter explained briefly i~
reference to ~ig8. '1 ana 2. The proce~s includes dual-~taged sez~ing operations. A pair o~ cglindrical stockin~
material~ 1 and 2~ each closed at the toe end,,o~ same size are superposection in the sec~ion forming the pa-nty section 6 ana the thigh section is s~iced, I~ext, the ~irst seami~g operation is a~pli,ea'to ~he supérposea stoc~ing ' materials in order to'obtain ~n i~^o~plete pan~y-hose 7a such ~s sho~n in ~ig. 1. The fro~t and rear side sliced frin~es 3 and 4 aré seamed together alo~g seam lines 3a and 4a ~'qilst lea~ing a sliced ~rin~e 5 in ~he insiae thigh section unsea~.ed.,The inco~ple~e pant~y-hose t~us includes an unseamed o~ening 5a in the inside thigh section.
-- 7 -- ' , , . . .
t 161308 This sort of so-called skip seaming operation can ''' easily be carried out on a Xno~-m line close such as the one disclosea in Japanese Patent 880,791.
, In the second stage seaming operætion, a gore piece 10 ~s ~itted to the above-described unseamed oPening 5a in the . ' incornplete' panty-hose'7ar and the sliced ~ringe 5 in the 'inside thigh section ana the fringe of the gore piece 10 ' are seamed together along a seaming line 8 in order ~o for~ a comple~e gored panty-hose such as sho~n in Fig. 2.
One embodiment of the seaming app~ratu~ in accordance Y~ith the presen~ in~en~ion is ~ho~ in ~ig~. 3 and ~, , .
An operation tab-e 102 is mov~tea ato~ a pedestal 'casing 101 and both are maae up of semi-circular sections ~nd integral square sections. An up~.qardly extending vertical shaft 103 is rotatably arran~ed about the ce~ter of the :
se~i-circular sec~ion o~ the o~eration table 1~2 and a c,arrier disc 104 is horizontally mountea ætop the ,~ain shaft 103. As sho~3n in Fig~ 3, four sets o~ do~n~/ardly e-~tending sv.ction,assemblies 201 are dis-Qosed to ~he cærrier disc 104 at e~ual intervals along its perip~ery~ The nv!nber of the suction asse.~hlies 2'01 is unlimitted to four , ", .. .... .. ...... . .. . .. .. .
l 161308 sets and can be chosen as desired.in accordance ~-~th re~uirement in practice. The suction assemblies 2Ql revolve, together with the carried disc 134, about the axis o~ the raain shaft 103 in the counterclockwise direction in the illustration in order to travel from the first to ~ourth operation stations I to IV provided on the operation .
table 102.' , .
In the first station I, æn incomplete panty-hose 7a.
having an inside thigh openi-ng 5a ~seé ~ig. 1) is ~anually attached to one suction-æssesmbly 201 in that station. ~he ' leg sections are pneumaticaLly sucked into the suction tube 203 ~Jhile ~he ~licea ~ringe ~ i~ folde~ over the ov.ter ~urface o~ t~e lower end o~ the suotion tube 203. Then the pneumati~ suctio~ acting on the suc~ion assembly 20 'i~ intercepted,by suitable manual s~litching. As læter described in .nore detail, hooks arranged in the suction tube 203 hola the sucked incom~lete pæn~y-hose.vJithin the sv.ction tube 203 even after the pneumatic su.ction is provisionally cæncelled.' .. In the second s~ation ~,,a gore piece 10 cu.t in~o a p-rescribed shape is passed to a ~ore piece tran3-fer assembly 401 by a gore piece feeder a3sembly 301.
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_ g _ ... . . . . . . . .
l 161308 Concurre~tly wit,l this transIer of the ~ore-~piece 10, adequate num~er of cuts are formea in the section of the .
sliced fringe 5 fol~ed over the outer surface of ~he 10.7er end of t.he suctio~ tube 203 by a heat cut assembly 501. The tr2nsfer assembly 401 fits, by its o~ rotation, the gore piecé 10 to the correct position on the incomplete pan~y-hose 7a hel:d by the suction assembly 201 and the sliced fringe 5 is returnea.to the horizontal state by, e.g. .. .
æpplication of pneumatic blo~J, in order to be superimposed upon the ~ringé of the gore piece 10 already placed in position on the second station IL
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In ~hé third ~tation DI, the ~uction a~embly 201 revol~es together with the incomplete panty-hose 7a and the gore piece 10 BO tha~ a se~ng machine 601 sezms the sliced ~ringe 5 of the incomplete panty-hose,7a Y~th the fringe of ~he gore piece 10 in order to obtain a com~lete panty-hose 7.
In the fov.rth sta~ion IV, the complete panty-hose,7 is removed of~ the suction assembly 201 to be discharged outside the system by a removing asse~bly 701.
, --, 10 --, ,, .. _........ . ... . . . . .. . .
Detailed constructions of the above-described ~arious assemblies are as follows.
.
he carrier aisc 104.
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As sho,vm in Figs. 3 ana 5, the ~ain shaft 103 is rotatably carried, via thrust bearings 106 and 107, by a cylindrical stand 105 fixed atop the operation table 102.
~he ~in shaft 103 is cylindrical in shape and its lower ena i5 connected ,to an adeqv,ate suction source (not sho~
by a suction pipe 108. ~he pneumatic suct~,on is controlled by ordinary manual s~tching operation.
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, A drive mo~or 109 accompanying a knov~n redvction gear mechanisam is arranged under the operation table 102 ana its outpu~ shaft carried a drive ~ulleg llOa ~hich is opera~ion-ally coupled, via a drive belt 111, to a driven pulley llOb ,, mountea to the main shaf~ 103, By properly contrôlling the operation of the drive motor 109, the main sha~t'103 and the carrier disc 104 are driven fori~tex~-itte~ rot~tion, each movement covering 90 aegrees center ,angle.
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As a substitute for'the'above-described arrangement , .. .. .
for the intermittent rotation, any kno~ drive mec~anism such as ia geneva index unit is usable for ~he presen~
invention. Further, a kro~m timer or the'like is usable Eor control of the drive motor lO9 (~) The suction assembly 201.
,, -As sho~-m in Fig5. 3 ana 5, each sv.ction assémbly 201 includes a vertical suction tube 203 ~/hich is rota~2bly c~rried at its top by a boss 104a on the carrier disc 104 by means of thrust bearings 202. The suction tu.be 203 is ppen at both longitudin21 ends and a skirt-sha. ed bottom flange 205 is fi~.edly;inserted over i~s bot~o.~ end. At a level near ~he top end, a gear 204 is fixedly in~erted over the suction tube 203 ~or engagement r~th ~he la~er described suction tu~e driver assembly 50.
At least one hook 206 is ~ixed at its lo~Jer ena to 'the' inside v~all of the suctio~ tube 203, w~ich is nade of a flexible material such ~s a synthetic resin. ~he hook 206 blocks ~lling o~ the incomplete pa~y-hose 7a outside the svction tube 203 when'the pneumatic suc~ion is in~ercepted at the first station I. Preferahly, thr~e or ~ore hooks 206 are arran~ed in the suction tube 203 lor re~iable holding - l 161308 .
of the incom~lete panty-hose 7a r~thin the suction tube 203.
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:
A cover disc 120 is arrange~ on the carrier disc 104 whih~t being rotatably insertea over the top ena of the main.' sha~t 203 via a thrust bearing 121. The diameter o~ ~he. ' .
co~rer disc 120 is almost equal ~o ~hat o~ ~he carrier aisc 104. As ~a~er describea in more,detail,. the cover disc 120 is coupled to the'peaestal casing 101 by means of the r`e~oving assembly 701 ana, consequently, held sta~ionarily des~ite the rota~ion of the mæin sha~t 103.
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... .
A~ ~ho~n in ~ig. 6, circulzr hole~ 12'2 and 123 are for~ea through the cover disc 120 at positions correspondi~g to the ~irst and ~ourth stations I and IV. ~he positions of these holes 122 ana 123 ære selected so tha~ they correct-ly meet the ~op opening o~ ~ suction ~ube 203 ~Jhen ~he la~ter is in these stations I ana I~. . ' , ' . h perforated block disc 12' is arrangea in ~he - , -circular hole 122 in the firs~ s~ætion I in ~n arra~e.~e~
flv.sh ~ h ~he bot~om face of ~he cover ~i5C 120. ~he circu.lar hole 122 is conne~tea to the ~op opening of ~he mæin shæI~ 103 b~ means of a cv.rvea pipe 126. Thus, ~ .,, . . _ . .. . .. .. .... . . .... . . .
. 1161308 pnev~2tic: suction ~cts on the sv.c~ion ~ube 203 ~ia ~he cyli~dric:al main shaft 103, ~he curved pipe 126 ana the per.orætea block diso 124.
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(3~ ~he suc~ion ~ube driver assembly 50.
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As sh~on in ~igs. 3 2nd 5, a drive motor 53.is *ixed, by ~e~ns of a bracket 51, to the cover aisc 120 æ~ a posi~ion corréspo~di-ng to ~he third station ~I. A gear 55 ~ixea to its ou~put sh~t iSengage~blç~th the .gear 204 on tke suction tube 203 ~lhen thé la~ter is at the ~hird s~ation DI. As the dri~e motor ~3 i~ activa~ed, the suctio~.
tv.'oe 203 starts to rotæ~e abov~ i~s o~m æxis~
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(4) ~he gore piece feeaer assembly 301 a~a the gore piece transfer assembly 401.
The de$ailed construc~ions of the assemblies are sh~70n in ~igs. 3, 4 ana 7. ~. -.
~ n ~he second sta~ion ~, a gore piece lO cut into a prescribed sh~pe is ~ea by ~he ~eeder zssr.lbly 301 to ~he ~r~ er ~ssembly 401 ~/hic~ in ~urn ~its the ~ore piecs 10 , l 161308 to the correct position on the inco~plete panty-hose 7a held by the suotion assembly 201 so that the slicea lringe 5 ana the ~ringe of ~he gore piece are superi~posed in a horizontal state.
As sho~m in ~igs. 3 and 4, the ~eeder assembly 301 includes a feea reel 303 of the gore piece band ~lhich is conveyed towards the tr2nsler assembly 401 by means o~ feed rollers 306 a~a 307 via guide and da~cerrollers 304 and-305.
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A ~up~orti~ 5t2,na 310 is arranged on the ~v.are ~ection of ~he operation table 102 z,na bears a ~rive motor 311 ~lhich is opera~ionally couplea to t~e réel 303 ana the rollers 304, 306 and 307 by mean~ 0~ ordinary pulleys and a ~rive belt. U~on each lntemittent rotation of the drive motor 311, the gore phece band i5 delivered from the reel 303 by ale~ correspo~di~g to one ~ore piece 10. A pair of vertically s~i~table cutters 312 ~n~ 313 are arranged a~ a position bet~/een the rollers 306 ana 307 in order to . . .
cu.t ovt the sidefrin~e~ of tke gore piece bana in a trian~ular shape during the dFJell of the in~er~ittent delivery of the band. ~oncurre~tly ~/it~ this procedvre, a cut~er 314 arranged on the stalld 310 in fron~ of the feed roller 307 shifts do~mwards and fo m a ~traight cu~
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, .. . . .. . . . . .
in ~he center o~ the b~n~ in order to fo-~ o~ gore piece 10 of 2 ~rescribed shape, e.g. a diamond shape.
The construction of the gore piece transLer assembly ¢01 ~,ill,hereinafter be explained in more detail in re~erence ' ~o ~i~s. 4,,7 and 9C. A cylindrical bracket 4~3 is fixed ' to a ~rescribea position on the operation table 102 an~
rot2tæbly caries a drum æsse,~bly 404.
~ ke drum zssembl~ 404 includes a c~lindric2,1 sup-~ort ~ha:~t ~,05 ha~ a lo~er ~ec~ion rotatably in3erted in~o the b-~2c'~et 403, ana a pair o~ hollo~ suppo-rt Zr~QS 406 e:~er2ing horizontally ænd~i-~ opposite directions -lro~ the su~ort s~a~t 405 at a level abové the opera~ion tæble 102.
~ach support arm 406 carries at its outer end a cylindrical, up~i~h~ shaLt 407 having æ to~ ~la~e.' A ~orizo-n~al semi-circular plate ~08 is loca~ed o~ the to~ flæ-4~e ol éæch u~-ri~t shaft 407.,The Pair ol semi-circul~r pla~es 408 îaces each o~her alo~g their s~right ed~es ~hilst le~vi-ng' æ sli~ht gap~ 3ach seJ~i-ci~cv,lar ~late ~,08 is ~ovi~ea ~ith n~merovs suc~ion holes 408a ~o~med tkere~llrougk.
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~ ~er c~ der ~11 o~ a double dr~ ~' 3 inse:~te~
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l 161~08 over each up~ight sha-l~ 407 ~nd a co~pression spril~æ ~14 is im~osed between the bo~tom. W2~1. 0~ itS outer cJlinder 412 æ~d the iower ~ace o-f the associated semi-circvlær plate 408 ~hilst coaxiæ~ly surrov.ndin~ the upri~h~ shaft . ,-407. ~ha* is, the,double drv~ 410 is elastically pressed. ~ , towaras t,he associzted support arm 406. A ~lange 413 is ~ormea atop the ou~er cylinder 412 ænd ~ixealy cæ-rries the assiciatedJseme-circular plæ~e 408.
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In the secon,a station, a ~neumatic cylinaer 415 is , , '~ixed to the lower ~zce o~ the o~eration'tæble lO~ an~ its piston rod 415a-extends up~/æras slidabl~ tkrov~h.~he operation ~able 102 in order ko ~ace the lower ~æce o~ the aOv~le a~ 410. ~onsea,uentl~J, as the piston ro~,415~ is ' drivén for up~lard mo~ement b~ the pnev~ætic cylin~er 415, the dov,ble d-~um 410 is ~orced to move up~..æ,ras over æ
prescribe~'~istance ~hilst overcoil1ing repulsion o~ ~he co~ression s~ing 414. The ~ ~tea ~ositio:~ o~ the dovble ' ' aru~ 410 is sho~i.n ~ h chain lines in Fig. 7. ' ~ elations~ip in position bet~.-/ee-n the pair o~ ~o-~ble dru~s 410 in the secona stætion ~ i5 slo~m in Fig. 7. lhæ~
is, ~he ri~ht side doL~.ble ~.-~u~ 413 ~aces the dormst-eam ter..~inal o~ the gore iece ~ee~er as~e5~bly 30l in order , ............ .
~ 161308 to receive a ~ore ~iece on its seEi-cir~ular plæ,te ~ro~
~he feeder assembly. ~he le~t side double drum in the second stætion ~ is located in axial alig~ent ~lith the ~uction tubé 203 of the suction asse.~bly 201 in thæt ~ation. In this state, a slight gsp is left between ~he ~emi-circular plate 408 and the lower end of the bottom flange 205 on'the suction tube 203.
- : ' At a level beloYI the cylindrical bracket 403, a pulley 402 is fixe~l~ inserted over thé support shaft 405 and ope-ra~ionall~ coupled to a ~ul~ey'421 on ~he.~ain shaft 103 (see Fig. 3) by means o~ a drive belt 422. ~s the ~ain ~ha~t 103 i~ arive~ for rotation by ~he drive motor 109, the ~rum asse,~bly ~04 ~th the dovble drvr~s 410 rotates about the ax~-o~ the support shaft 405,in a direction sho~J~ by a~ ærro~ in Fig. 4; i.e. counterclock~-~se. The ratio in aismeter between the two pulleys 420 æ~d, 421 is desi~nea 1:2 so ths,t ~he dru~'assembiy,404 com;~letes z 180 , degrees'rotzt on upon 90 degrees ro~ation of ~he mæin sha~ 3. ' - , ''-- ' ' As the ~lai~ shaft 103 rot~*es over 9,0 aegrees, ez,ch suc~ion assem,bly 201 travels ~ro~ ~ st~tion to ~n ædjacent s~æ,tion and ~he pair of do~ble dru~s 41~ zttern2,te in position in order to rest in ~he new positions,. During ~he dwell, a gore piece lO is p2ssed to the right side dovble drum 410 by the ~eeder assembly 301 ~-.rherea~ the left side double' drum 410 a83igns a gore piece to ~he suotion assembly 201 in second station II. , ~ ' , .
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The l~o~ver end of the sup~ort,shaft 405 is coupled in æir- , tigh'b to a co~ection pipe 425 ~-Jhich is in turn co~nec~ed to '' he suction pipe 8 (see Fig. 53 via a valve 426. The valve 426 talces the ~orm o~ a normally closed,valve ~lhich is ~ade open only ~lhen the arum assembly 404 perlorms the 180 degree~ rotætion, This opening of the valve.426 all,ows apnlicatio~o~ pneumatic ~uction to the ~ore piece lO on ths a~sociatea ~emi-circular plate 408 viæ the eonnectio~l pipe 425, the support a~m 405, the support arm 407, a slit 407a in the upright sha~t 407, the aouble drum 410 and the suction holes 408a o~ the se.~i-circular.plæte 408, thereby e~e~tivel-~
blocking accidental ~allin~ of the gore piece during movement o~ the associatea drwm assembly 404.
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As shorm in ~ig. 3, a ~ gv,ide pl~te 423 e.ctenas bet-.
~Jeen the second.ana thira Sb~tiOYls II ~nd III zlong ~he tr~velling path of the suction asse~blies 201. Tle ~bOp face OL this guide pla,te 423 i5 ~lvsh ~th those o~ the ~emi--- 19 -- . .
- l 161308 circular plate 408 in the lifted position (see ~ig.;7) ~nd the se~in~ table in the third station III. As the suc~ion assembly 201 tr2vels fron the second to the third station ~ith the gore ~iecé 10 passea by.the feeder as~embly 401, ~he gore piece 10 sliaes on and along the guide plate 423, ~here~ore, the top ~ace of the guide plate 423 should pre-~erably as smooth as possible. Y1hen necessary, any smoothing ~inish ~ay be applied to its top faceO
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(5) Heat cut assembly 501.
~oncvrrently ~ith trans~er o~ the gore piece ~ 'he second stætion II, cuts are formed in the sliced fringe 5 ~ol~ea over the suction tube oottom ~lange 2~5 by hezt cut.
In advænce to the subseauen~ sear.1ing on the se~-~n~ machine 601~ ~he slicea ~ringe 5 ha~ to be returned to the horizon~al sta~e by means of, for exa~ple, air blow in order t~ be super-imposed on the ~ringe o~ the gore piece 10 locatea on the se~ng tzble. Presence of the above-described cuts enables easy ænd success~ul ~attening o~ the sliced fringe 5. It is not zl~lay ~ecessa~g to complete this flattening in the third station III. After the heat cut is complete, the pne~matic flz~tening may be carried out in-the second station II zlso.
It is only reuirea t~a~ ~he slicea frin~e 5 s~ould be hori-zontally svperimposea v.pon the ~rin~e of the gore piece in a~væncé to the sezming orerztion z~ the third s~ation I~I. -~ 161308 The heat cut assembly 501 ~ill now be explainea in ~ore detail whilst referring to Figs. 3, 4, 12 and 13.
At a position facing the second station II, a bracket ~03 i8 ~ixed to the operætion table 102 and carries,a pneu-matic cyiinder 505. A rack 507 i8 ~ixed at its one lon~itudi- . , nal end to the outer end a piston rod 50~a o~ the cylinder 505. . .
An arm 509 is fixea to.the other end o~ the rack 507 and carries an electric heæt cutter 511. ~he rack 507 is in en~a~ement with a pinion 513 ~-~hich in turn eng~ges ~ith a gear 51~'on ~-the opposite side of t~e rack 507. An arm 515 e-~.tends ~rom the pinion 513 in a direction substa~tially normal to the' longitv.ainal airection o~ the -rack 507. ~ikewise, ~n ar~ 521 ~Y~ten~ from ~he gear ~19 in alignment ~th the arm 515. The arms 515 an~ 521 carry electric heat cutter~ 517 and ~23 at their ~ree en~s, The arms and the cutters, assume the inopera~ive position sho~-~ with sol;d lines in Pigs. 12 and 13 ~hen the pneum~tic cylinder 505 is inoper~tive. As the cglinaer 505 o~erates, the ~iston roa 505a projects and ~he heat cutter 511 ~ith the ,arm 509 moves towards the suction assembl~ 201 in the second station II and arrives a~ the operative position sho~ ~th chain lines. Concurrentl~, arms 515 and ~21 se~ng to~.lards the suction assembly 201 ~lith their heat cu~'ters 517 an~ 523 in order to a-rrive at the.'operative positions sho~m ~.~Jith _.21 ~
.. . . .. . . . ... . .
chain lines also. At the operative ~ositions9 the heat cutters 511, 517 and 523 touch the sliced ~ringe 5 on the suction tube bottom flange 205 in order to form cuts at æbo~ 120 degrees in~ervals~ As the piston rod 505a receds i~to the pneumatic cylinder 505, arms ana heat cutters all resume the inoperative positions ~he number of the heat cutters, i.e. the number of cuts formea in the slicea fringe, is not limited to three, Ho~rever, in consideration of simplicity in construction and easiness in flattening operation, it is ædvantageous ~o use three sets of heat cutters.
(6) A sliced ~ringé direction adjuster assembly 800.
, A~ describea already, the trans~er a~serQbly 401 receives a gore piece ~rom the ~eeder assembly in order to transfer it to the suction as~embly 201 located at second ~tation II so th~t the slicea fringe 5 o~ the incomplete pan~y-hose 7a i8 svperimposea upon the fringe of the gore iece 10. ~or correct seaming on the sevling rnachine 601, the sea~ing line on the gore piece lO should mee~ tha~ on the sliced fringe 5 ~ h- -out æny bias. -In general on a gore -piece 10 made of cotton --or the like, its stretch is larger in the ~l2rp direction than in the ~Jeft direc~ion. Therefore, it is advan~ageovs tha~ the arp direction on the gore piece 10 ~hould meet ~hzt o~ the seaming line on the sliced ~ringe 5.
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This adjustment is carried out by the direction adjuste~
asse~bly 800 sho~Jn in ~igs. 10 2~d Il.
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h bracket 801 is mou~ted to the top end of the cylindrical stand 105 carries a drive motor 802 ~ich is driven ~or rotæ- ~
kion by an eIectric signal from a later described photoel.ectric #ensor 804.. A roller 803 is fixed to the output shaft of the dri~e mo~or 802 in pressure contact ~-litk ~he outer wall 205a of the bo~tom flange 205 on the suction æssembly 201 locatea at the second station II. As the roller 803 rotates in the direction o~ an arrow 'tc", the flange 205 rotæte in the direc-tion o~ an opposite ærrow "d" in ~i~. 10 due to the above-de~c~ibed pressure conta¢t.
, ~ he ~hotoelectric sensor 804 is arr~nged a~ a proper position on a stræight ~orizontal line passi~g through the center axis ol the suction assembly 201 located i~ the secona sta~ion II. ~he sensor 804 détects presence o~ thé sliced ~ringe ~ ana the seam lines 3a and 4a on the incomplete panty-hose 7a held on the suction assembly 205 in the secand station II. - .
As the ~ensor 804 detects presence o~ the sliced ~ringe 5, its electric detection signal drives the motor 802 ~or rot~tion~
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~he moto~ 802 ceæses its rota~ion, ho~-lever, as the sensor 80~, Qetects presence o~ the sez~ Iines 3a and 4a. In other ~lords, the sensor 804 detects presence OL '~he sliced f:~inge 5 ~hen the ~eam lines 3a and 4a axe o~ the str~ig~t line X
and the raotor 802 is driven for rotation~ As a consea,uence, the ~oller 803 rotates in the direction "cl' and the flange ' 205 in the ~irection "d". As the seam lines 3a ana 4a meet .
the str~ight line ~, the sensor 804 detects this ena the motor 802 ceases its rotation. '.7hen the seam lines 3a and -, 4a a~e on the straight line ~ from the beginning, the motor 802 does not rotate zt all. In either case~ the seam lines 3a a~ 4a are regis~ered at the straight line X by the sensor 804 before the sliced fringe 5 and the' frin~e of the gore piece,lO are ~upePimpo~ea, , . ' . .' .
(7~ ~he sewing machi~e 601.
, ~he.se~Jing mac~ine 601 is arrangea in the thira 5tation III in oraer to se~m the sliced fringe 5 of the inco~plete panty-hose ja held by the suction assembly 201 ~-~th the fringe.
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of the gore piece 10. The construction is sho~n i~ Fig, 8.
, -At the moment the suction assembly 201 Y~th the i~-complete panty-hose 7a and the gore piece 10 zrrives at ~he t~ird station III a~ter its trav,el along the ~ui~e plate 423, , . - 24 -_ .. . . . .. .. .... .
l 161308 the gore piece 10 is in the horizon~al state but ~he sliced fringe 5 is folded o~er the suction tube bottom 1ange 205 Prior to starting of the seaming operation, the sliced ~ringe 5 needs to be returned to the horizontal state for ~nug ~uper~mposition ~ith the fringe o~ the gore piece 10.
~his flatteni~g is car~ied out on the sewing table 6030' .
. . - -, One example of such flattening is carried out'by an air .
'ejection nozzle 604 arrangea new the sewing machine 601 P~ith its ejection mouth closely facing the outer wall of the suc-tion tube bottom flange 205. Air blow by the nozzle 604 .
flættens the slicea fringe 5 on the gore piece 10~
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Another ex~mple o~ ~uc,h ~lattening i~ carriea out by an air suction nozzle 605 loc~tea at an upstrea~ position of a sewing neeedle 601a,on the sewing machine 601. Air suction by the nozzle 605 ~la*tens the slicea ~ringe 5 on the gore piece 10. ' :, . . .
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These air nozzles 604 ana 605 may be used in combina-~ion.
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It is also fea5ible to,arrange these air nozzle~ 604 - 25 - ' ' . . ..... ... . . . .
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l 161308 and 605 at the second station. ~I in order to practice the fl2ttening of the slicea *ringe just after tr~nsfer of the go-e piece 10 to the suction asse.~bly 201. In t'~is case, ho~rever, there is a likelihood that the once flæ~ened sliced fringe 5 may loose its correctly superi~posea state aue to an~ unexpectea shock to be causea during its ~rævel to the third station I~I rJith the suction assembly 201. In order to ævoid such a trov.ble, it is r~her aava~ageou~ to carry out the flattening o~ the slicea fringe 5 at the third st~tion TII.
(8~ ~he removing assembl~J 701.
The complete pant~J-ho3e 7 ~or~ed æ~ ~he thira ~tation XII
is re.Qoved off the ~uction assembl~J 2~1 ~t ~he ~our~h s~ation IV in order ~o be dischærged ou~side~ the sgstem.
', ' '' ' , ,', ~he removing assembly 701 is sho~-m in det7ii in ~ig. 3.
' One end OT a delivery pi~e 7~3 is covpled to ~he circv.lar .hole 123 (see Fig. 6) in the cover aisc i20~ The other ena -o~ e aelivery pipe 733 is proviaed ~-r~h æ delivery movth 704. A pair ol ve-rticælly s~acea brac~ets 705 are disposed to ~he cover disc 120 æn~ the o~erætion tzhle 10~ in axial , _ 26 --l 161308 alignment, ~espectively, in oraer to hold a suction PiPe 706 verticall~. ~h;s connection holds the cover disc 120 in-movable ~th respect to the ~ain sha~t 103 which rot~tes intermittenlly~ The upstre~m end o~ this suction pipe 706 is coupled to the suction tube 108 ~lith the dormstream ena to the delivery mouth 104.
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,' ,- '.' ~ hus, pneumatic svction acts on ~he complete panty-hose 7 ~ithin the suction tube 201 via the suction pipes 108 and 706, the delivery mouth 704, the delivery pipe 7C3 ana the ¢ircular hole 123 As a consequence ~he complete panty-hose 7 is discharged outside the system via t~le circul~r hole 123, the deliverx pipe 703 ænd the delivery mov~h 704.
, Oper&tion of ths æutomatic seaming apparatus in accor- .
dance ~lith ~he pres.ent invention and equipped ~-nth the abové- -described assemblies is as hereinæfter described~ re~erenc~-being made to ~igs. 9A through 9E. .
-- -- --In the first stztion I, pneu.-natic suction zcts on a suction assembly 201 by ma~ual s~tcqing so thæt, as sho~-m in Fig. 9A, the leg sections o~ an incomplete ~nty-h~5e 7a are sucked into the suction t~be 203 and the inside ~high ~licea ~rin~e 5 is manv.allg ~oldea over the bottom llange 205. Even a~ter th~ pneumatic suction is intercepted, the inco~plete - ~7 -l 1~1308 panty-hose 7a is held on the suction assembly 201 by the hooks 206 (see Fig. 5). The suction assembly 201 then travels towards the second station II whilst carrying the incomplete panty-hose 7a as shown in Fig. 9B.
In the second station II, the feeder assembly 301 passes a sheet of gore piece 10 cut into a prescribed shape onto one double drum 410 of the transfer assembly 401. Thereafter, the valve 426 is rendered open in order to suck the gore piece to the top face of the associated semi-circular plate 408. In synchronism with the travel of the suction assembly 201 to the second st~tion II, the double drum 410 revolves about the axis o~ the support sha~t 405 over 18~ deKrees and is reKistered at a position below and in axial alignment with the suction assembly 201 arrived at the second station II.
Further, by operation of the direction ad~uster assembly 800, the angular position of the sliced fringe 5 on the bottom flange 205 is adjusted with respect to the gore piece 10.
At this moment, the valve 426 is closed in order to cancel the pneumatic suction working on the gore piece 10 on the semi-circular plate 408 and the pneumatic cylinder 415 starts to lift the double drum 410, thereby placing the gore , . ~
l 1~1308 piece 10 on the semi-circular place 408 into pressure contact ~th the bo~to~ of the sliced fringe 5 on the ~lan~e 205 as sho~n in Fig. 9C.
Concurrently ~-~th this procedu.re, the heat cut asse~bly 501 ~orms cvts in the sliced fringe 5.
As these operations are co.~plete, the suction assembly 201 ~th the incomplete panty-hose 7a travels to~lards the thira-station IIl. ~he gore piece 10 on the semi-circvlar plate 408 in $he li*tea position slides to~7ards the ~e~n~ table 603 along ~he guide plate 423 due to the above-aescribed pressure contact.
. .
In the thira station III, the sliced ~ringe ~ is turnéa bac~ to the horizontal state by operation of the air ejectio~
nozzle 604 and/or t~e air suction nozzle 605 in or~er to be superimposed on the ~ringe of the gore piece 10. A~ this moment, the suction tube driver assembly 50 oper~es to rotate the suction tube 203 ~th the incomplete panty-hose 7a an~
the gore piece 10 over 360 degrees so that the se~.ing machine 601 seams the sliced fringe 5 together wQth the fringe o~ ~he gore piece 10. This procedure is sho~m in Fig. 9D. Con-currently with this sea~ing, the svrplus sections o~ the slicea l 161308 fringe 5 and the gore piece 10 are cut of~ ænd a com-~lete pznty-hose 7 such as sho~m in Fig. 9E lS obtained ~rlhi~h include~ an almost round gore lOa seamed to its thigh ,, .
~tion along the seam line 8;
.
. , ' ' ' . . .
As ~he seaming iæ complete, the suction assembly 201 travels toY~ards the fourth station IV whilst carryi~ the complete panty-hose 7 inside. ~he removing assembly 701 thereupon operates to remove the panty-hose 7 of~ the suction asse~bly 201 and discharge outside the sys~em.
.
In ac¢ordanc~ ~ith the pre3ent invention almost all ope-r~tio~ are carriea out quite automa~ic~lly expec~ for ~he initial manual at~achiment of the incomplete pan~y-hose to the suction assemblg in the ~irst station. This naturally results in rem~rkable saving in læbour~ hi~h pro~uction el~ici- -ency and low proauction cost.
' Operations done oy the ~V ~om2tic asserl~li?~ assures pro-duc~1on of pan~y-~ose5 of u~i~o-~rl ciuali~ ænc, ~lla;qe.
.
. . .
~he limited ap~licætion o~ ~nev~a~ic uc~ior orl-~ in the *irst station ~or holdin~ of the incomplete pan~y-hose results .
- I 1613~8 in reducea po~er consumption ~nd simple ~pin~ for; ~he pnew~a~ic syst em 0 .
A8 the suction assemblie~3 tra,vel.along a circular endless path, the apparatus is very compact in construction a~d less npaoe i~ n-oessary rOr its Installation.
, ' . .
... .
' ,, _ 31 _
Claims (21)
OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:-
1. Automatic seaming method for a gored panty-hose comprising holding an incomplete panty-hose having a sliced fringe defining its inside thigh opening on a suction assembly by provisional application of pneumatic suction with said sliced fringe exposed outside of said suction assembly, feeding, in a horizontal state, a gore piece of a prescribed pattern in position to said inside thigh opening of said incomplete panty-hose, flattening said sliced fringe into superimposition with the fringe of said gore piece, seaming said fringe of said gore piece with said sliced fringe of said incomplete panty-hose in order to form a complete panty-hose, removing said complete panty-hose off said suction assembly by means of pneumatic suction, and repeating said listed operations in the described sequence.
2. Automatic seaming method as claimed in claim 1 further comprising forming at least one longitudinal cut in said sliced fringe of said incomplete panty-hose in advance to said flattening.
(continued)
(continued)
3. Automatic seaming method as claimed in claim 1 or 2 in which said listed operations are completed as said suction assembly circulates along a prescribed endless circulating path.
4. Automatic seaming method as claimed in claim 1 in which said flattening of said sliced fringe is carried out by means of pneumatic blow.
5. Automatic seaming method as claimed in claim 1 in which said flattening of said sliced fringe is carried out by means of pneumatic suction.
6. Automatic seaming method as claimed in claim 1 or 2 further comprising detecting, in advance to said seaming, by photo-electric manner whether or not seam lines on either sides of said sliced fringe of said incomplete panty-hose are in correct positions, and registering said seam lines at said correct positions when they are off said correct positions.
7. Automatic seaming method as claimed in claim 1 in which said sequential operations are carried out at four different stations arranged around a fixed center at sub-stantially equal intervals, and said suction assembly travels with said incomplete panty-hose from the first to third station and with said complete panty-hose from the third to fourth station, both in intermittent fashion having a dwell at each station.
8. Automatic seaming method as claimed in claim 7 in which said holding of said incomplete panty-hose is performed at said first station, said feeding of said gore piece is performed at said second station, said seaming is performed at said third station, and said removing is performed at said fourth station.
9. Automatic seaming method as claimed in claim 8 in which said listed operations are performed substantially concurrently at different stations within a common dwell.
10. Automatic seaming apparatus for gored panty-hoses comprising a horizontal operation table having at least four separate operation stations arranged along a given circula-ting path of travel at substantially equal intervals, at least four suction assemblies arranged over said operation table, and each adapted for holding an incomplete panty-hose having a sliced fringe therein, each including a vertical suction tube provided with a bottom flange and at least one inner hook, means for concurrently driving said four suction assemblies for travel from station to station along said path of travel in an intermittent fashion with dwells so that each said suction assembly rests at any station during said dwells, a gore piece feeder assembly arranged facing a second station and adapted for sequentially feeding gore pieces of a prescribed pattern, one at a time, in an intermittent fashion, a gore piece transfer assembly interposed between said second station and said feeder assembly and adapted for transferring, in a horizontal state, each said gore piece fed by said feeder assembly to each said suction assembly located at said second station during each said dwell, a heat cut assembly arranged facing said second station and adapted for forming at least one longitudinal cut in said sliced fringe of each said incomplete panty-hose held by said suction assembly, means for flattening said sliced fringe of said incom-plete panty-hose into a superimposed state with the fringe of said gore piece, a flat guide plate extending between said second and a third station and flush with the bottom face of said gore piece superimposed with said fringe of said gore piece, a suction tube driver assembly arranged in said third station and adapted for driving said suction tube of said suction assembly in said third station for a 360 degrees rotation, a sewing machine arranged in said third station, provided with a sewing table flush with said guide plate, and adapted for seaming said two superimposed fringes together during said 360 degrees rotation in order to form a completed gored panty-hose during each said dwell, a removing assembly arranged facing a fourth station and adapted for removing, by means of pneumatic suction, said complete gored panty-hose of said suction assembly located at said fourth station, and a pneumatic suction source connected to said transfer assembly, removing assembly and each said suction assembly located at said first station,
11. Automatic seaming apparatus as claimed in claim 10 in which said operation table takes the form of a round table having said circulating path of travel along its periphery, said driving means includes a vertical cylindrical main shaft which is axially rotatable in an intermittent fashion such that each rotation covers 90 degrees, and a horizontal carrier disc mounted atop said main shaft, and said four suction assemblies are disposed to the bottom of said disc at equal intervals along its periphery.
12. Automatic seaming apparatus as claimed in claim 10 in which the interior of each said suction assembly is connected to the suction terminal of said suction source via a manually shiftable valve and said main shaft.
13. Automatic seaming apparatus as claimed in claim 10 in which said gore piece feeder assembly includes a feed reel of a gore piece material band, means for delivering said gore piece band from said feed reel in an intermittent fashion over a length corresponding to each said gore piece at a time, a pair of cutters arranged downstreamly of said feed reel and adapted for deliniating each delivered section of said gore piece band, and a cutter arranged downstreamly of said pair of cutters and adapted for cutting each said delivered section into each said gore piece.
14. Automatic seaming apparatus as claimed in claim 10 in which said gore piece transfer assembly includes a vertical, cylindrical, center support shaft axially rotatable in an intermitted fashion such that each rotation covers 180 degrees, a pair of double drums held by said support shaft at opposite diametric positions, the interior of each said double drum being connected to the suction terminal of said suction source via said support shaft, a perforated semi-circular plate closing the top opening of each said double drum and having a top face flush with that of said guide plate, means for elastically pushing said drum downwards, and means for thrusting up said drum against the pressure by said elastic pushing means to an extent such that a gore piece placed on said semi-circular plated, is placed in pressure contact with said sliced fringe of said incomplete panty-hose held by said suction assembly.
15. Automatic seaming apparatus as claimed in claim 10 in which said held cut assembly includes at least one heat cutter, at least one movable arm holding, at its free end, said heat cutter, and means for driving said arm for movement between operative and in operative positions so that said heat cutter contacts, in said operative position, said sliced fringe of said incomplete panty-hose held by said suction assembly.
16. Automatic seaming apparatus as claimed in claim 10 in which said flatterning means includes at least one of an air ejection nozzle and an air suction nozzle closely facing said sliced fringe of said incomplete panty-hose located at said third section.
17. Automatic seaming apparatus as claimed in claim 10 in which said suction tube driven assembly includes a gear fixedly inserted over said suction tube of each said suction assembly, and a drive motor arranged in said third station and provided, on its output shaft, with a gear in engagement with said gear on said suction tube.
18. Automatic seaming apparatus as calimed in claim 10 further comprising means arranged facing said second station and for detec-ting, in photoelectric manner, whether or not seam lines on either sides of said sliced fringe of said incomplete panty-hose held by said suction assembly are in correct positions, said suction tube of said suction assembly being rotated by said detecting means until said seam lines are registered at said correct positions.
19. Automatic seaming apparatus as claimed in claim 10 in which said removing assembly includes a delivery pipe connectable at its one end to the top opening of each said suction assembly located at said fourth section, a delivery mouth coupled to the other end of said delivery pipe, and a suction pipe coupled at its one end to said delivery mouth and at its other end to the suction terminal of said suction source.
20. Automatic seaming method as claimed in claim 1 in which said sequential operations are carried out at four different stations arranged around a fixed center at sub-stantially equal intervals, and said suction assembly travels with said incomplete panty-hose from the first to third station and with said complete panty-hose from the third to fourth station, both in intermittent fashion having a dwell at each station.
21. Automatic seaming method as claimed in claim 20 in which said holding of said incomplete panty-hose is performed at said first station, said feeding of said gore piece is performed at said second station, said seaming is performed at said third station, and said removing is performed at said fourth station.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3157079A JPS55128001A (en) | 1979-03-16 | 1979-03-16 | Method and apparatus for sewing gore cloth to inside of thigh of panty stocking |
| JP54-031570 | 1979-03-16 | ||
| JP2581180A JPS56123401A (en) | 1980-02-29 | 1980-02-29 | Automatic weaving method and apparatus of gore containing panty stocking |
| JP55-025811 | 1980-02-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1161308A true CA1161308A (en) | 1984-01-31 |
Family
ID=26363500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000347772A Expired CA1161308A (en) | 1979-03-16 | 1980-03-17 | Automatic seaming method and apparatus for gored panty hoses |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0016437B1 (en) |
| AU (1) | AU5651780A (en) |
| CA (1) | CA1161308A (en) |
| DE (1) | DE3068340D1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS563093A (en) * | 1979-06-21 | 1981-01-13 | Takatori Kikai Seisakusho Kk | Method and device for sewing panty stocking which diamond shape is formed |
| DE3209417A1 (en) * | 1981-03-18 | 1982-09-30 | H. Flude & Co. (Hinckley) Ltd., Hinckley, Leicestershire | SEWING APPARATUS FOR GAP |
| IT1198509B (en) * | 1983-01-21 | 1988-12-21 | Solis Srl | PROCESS AND MACHINE REFERENCES, TO AUTOMATICALLY TRANSFER OR COLLANTS FROM A MACHINE THAT PRODUCES STITCHED COLLANTS TO A SEWING MACHINE |
| GB8807547D0 (en) * | 1988-03-30 | 1988-05-05 | Flude & Hinckley | Automatic flat seaming apparatus |
| ITFI980125A1 (en) * | 1998-05-26 | 1999-11-26 | Matec Spa | METHOD AND DEVICE FOR APPLYING A Gusset TO TEXTILE ARTICLES SUCH AS TIGHTS AND SIMILAR |
| CN110607611B (en) * | 2019-09-24 | 2024-04-26 | 强信机械科技(莱州)有限公司 | Clothing hem girth device |
| CN112674562A (en) * | 2020-12-25 | 2021-04-20 | 赵子佩 | Display device for artificial intelligence engineering design |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2982238A (en) * | 1958-08-28 | 1961-05-02 | Jr Frank H Fromm | Sewing apparatus |
| GB2001238B (en) * | 1977-04-04 | 1982-01-06 | Flude & Co Ltd H | Hosiery |
| IT1161402B (en) * | 1978-07-07 | 1987-03-18 | Solis Srl | METHOD FOR APPLYING AN ANCHOR TO ARTICLES IN GENERAL AS TUBULAR SOCKS AND LADIES OF THE LADY AND SIMILAR AND MACHINE TO IMPLEMENT SAID NETODO |
| GR70244B (en) * | 1978-12-06 | 1982-09-01 | Aznar Sa |
-
1980
- 1980-03-14 EP EP19800101352 patent/EP0016437B1/en not_active Expired
- 1980-03-14 DE DE8080101352T patent/DE3068340D1/en not_active Expired
- 1980-03-17 AU AU56517/80A patent/AU5651780A/en not_active Abandoned
- 1980-03-17 CA CA000347772A patent/CA1161308A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| AU5651780A (en) | 1980-09-18 |
| EP0016437B1 (en) | 1984-06-27 |
| DE3068340D1 (en) | 1984-08-02 |
| EP0016437A1 (en) | 1980-10-01 |
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