US2012565A - Tube splicing machine - Google Patents

Description

7, 1935. R. D. HULSLANDER TUBE SPLIGING MACHINE Filed June 21, 1933 18 Sheets-Sheet 1 M INVENTOR Ray D. Hulsbmder ATTORNEY6 Aug. 27,1935. R. D. HULSLANDER 2,012,565

TUBE SPLICING MACHINE Filed June 21, 1933 18 Sheets-Sheet 2 d 0 b l /K?)6 134. i (a m i I \29 INVENTYOR Ray "D. Hulskmder BY 2 Z i; q fgcm/uw ATTO RN EYS Filed June 21, 1933 18 Sheets-Sheet-Z:

Rag D. Hulslomdgr VEM' ATTORNEYS Aug. 27, 1935. R. D. HULSLANDER I TUBE SPLICING MACHINE Filed June 21, 1933 18 Sheets-Sheet 4 INVENTQR Rog D. Hulslamder' ATTO RNEYS Aug. 27, 1935. R. D. HULSLANDER TUBE SPLICING MACHINE- Filed June 21, 1955 18 SheetsSheet 5 INVENTOR Ran D. Huflslamder ATTO RN EY-s Aug. 27, 1935.

R. D. HULSLANDER TUBE SPLIC ING MACHINE Filed June 21, 1955 l I a J I I I I l I I 18 Sheets-Sheet 6 INVENTOR ATTORNEYS 1935- R. D. HULSLANDER 2,012,565

TUBE SPLICING MACHINE;

Filed June 21, 1955 18 Sheets-Sheet 7 INVENTOR Ron; D. Huhhnder 7 BY L ATTORNEYS Aug. 27, 1935. R. D. HULSLANDER 2,012,565

TUBE SPLICING' MACHINE Filed June 21, 1955 18 Sheets-Sheet a III/III I VIIIIIIIIIII/I IN ENT R Ran D. Hmslamder 84%; ME M Aug. 27, 1935. R. D. HULSLANDER TUBE SPLICING MACHINE l8 Sheets-Sheet 9 Filed June 21, 1933 ATTORNEY5 lllll r 1935- R. D. HULSLANDER 2,012,565

TUBE SPLICING MACHINE Filed June 21, 1953 18 Sheets-Sheet 10 INVENTOR Rag D. Hulslander ATTORN EYS Augl 7, 1935. R. D. HULSLANDER TUBE SPLICING MACHINE Filed June 21, 1933 18 Sheets-Sheet l1 INVENTOR ATTORNEYS Aug; 27, 1935. R. D. HULSLANDER TUBE SPLICING MACHINE Filed June, 21, 1935 18 Sheets-Sheet 12 lNVENTOR Rag D. Hulsmnder ATTORNEYS Aug. 27, 1935. R. D. HULSLANDER TUBE SPLICING MACHINE Filed June 21, 1933 18 Sheets-Sheet 13 INVENTOR Rog 'D. ulslander ATTORNEYS A g- 7, .1935. R. D. HULS LANDER TUBE SPLICING MACHINE Filed June 21, 1933 l8 Sheets-Sheet l4 INVENTOR yjjrdslandm" ATTOIRNEYS Aug. 27, 1935. R. D. HULSLANDER TUBE SPLICING MACHINE Filed June 21, 1933 18 Sheets-Sheet 16 INVENTOR Ran T). Hulslander ATTORNEYS 1935. RJD. HULSLANDER TUBE SPLICING' MACHINE l8 Sheets-Sheet 17 Filed June 21, 1933 INVENTOR R015 D. Hublander I l l l I l l I I l l l l I l l l I l l I I l I I l l ILI I Y l I l l I I l l I I l l I ATTORNEYS- R. D. HULSLANDER 2,012,565

TUBE SPLICING MACHINE Filed June 21, 1933 18 Sheets-Sheet 18 INVENTOR Rag D. Hulshnder ATTORNEY5 Patented Aug. 21,1935

1 WJ E a i f'J- BE-S L M Q CNE l a t Ray Dl iiulslander hkron, hi0,'ass'i gn0rto*'1he I I v Firestone Tire &' Rubber-"Company, Akron-t t Ohio, 21. corporatio'nhof Ohio; :31

7' Application June 2171933, serial lvo 676,773;

18 Claims;

invention relates to tube splicing Inachinesand more especially it relates to machines for "butt-splicing inner tubes composedof.

vulcanizedrubbercomposition.. I V

The chief objects ofthe invention are tt'pra vi d e a machine of theucharacter mentionedthat Will bag-fully automatic; in operation except for the manual-rnounting andremoval of the work;

tha t' wil l b'e continuous in operation; that will trim the tube-ends before butt-splicing them, and dispose of thetrimmings; and that will notdis tortithe ube ends during the trimming o Other objects will bemanifest. i ,In general the machine comprises a rotatable turret that carries four Work-holding 'mech'ae nismsorjunits. The turret is intermittently indexed or angularlyi rotated through- 90 degrees; and during the periods of rest finished work is re-.

moved and new work is mountedi'nfonetof-the units at one station, and. at the'diametricallyopposite station the two ends of the work are being trimmed. Other operations comprisingthe clamping of the work in the unit, thebutting together, of the trimmedfendsof the work,tand the sub-.

sequent opening of the unit to releasethe 'work' are performedduring the intervals that the turret,

is in motion, between the periods of rest.

Thetwo tube-ends of each tube are trimmed concurrently by means of a rotatable cup jshapedj knife that moves forward to cutting position after the tube has been properly positioned .b'ythe ro-. tation of the turret. The, trimmings from the ends of the tubes are suckedthrough-a hollow} spindle that carries the trimming: knife, and are deposited in the main housing of themachine. Suitable safety means is provided forpreventing injury to the knifein the event thatthe work-f holding units are not properlypositioned when" the knife moves toward trimming position.. a:

. Of the accompanying drawings:

Figure 1 is aside elevation "of apparatus bodyi'ngthe invention jin its preferred rim; 7 Figure 2 is a section on the line 2 -2 of showing part of the turretin plan; f

Figure 3 is a. s'ection onthe line 33 oi ure 2; p t

Figure 4 1s a section on the'lline a rari nure 3; Figure 5 is urez; v A t Figure 6 is a developed diagrammatic .view; of two associated cams; y Figure 7 is a detail elevation of a portion of a work-holding unit; h h V e Figure 8 is an end elevation of the mechanism asection on the line 5f5 'of Fig ration:

shown in Fi g ure '7 asviet'iea frornfthe ieftitherej I Figure 9jisajplan View ofthe mechanism shown V in. Figure} 1 Figure ioijis a si,

therein?v Figure ll Iis I FigureIZ-isa'detaiI sectional view'oi the work-j holding mechanism, andthework therein, and a trimmingvlknife as jtheyi an 1:" during" the tube- .trimmingjoperationgj Figure 13 is ad 'tail se tiOnai jview orjuie work'- I de 'el evationof a complete tubeg f splicing unit infsphcin'g pos'ition,;and,the works end elevation-of the apparatus; shown "in""F'igure"j10, as viewed "fromthe right i t. E15 holding mechanism, and the 'lwork therein, as]

they'appear during, the tubegsplici'ngfoperatiorni I Figure 14 isja fragmentary sectional perspective view of a1 spliced inner tube at the splice thereof;

is a section onth'e line [5-15 ofjig-J" Figure '1'9,s e""sebtipn on the line Iii-i9 of, Fig;

Figure '27] is a section on the line 2.1f21.of, Figure-24'; and

ji'l rease on the li ne any Figure 28 ista view similar to ZEigure 2 7tshowing the operation oflsafety mechanism thereon.

Referring to the drawings, the machine comprises ia' main housing 30 upon'the top of which is mounted a head casting 3 I that overhangsjthe 5 main housing '30 at frontand rear thereof. The

head casting Ii-l is Vop vat its bottom to the-in terior of the main housing, and has itstop closed m i new part a w ieie 1 were being a cover plate 33 over a portion of the head casting at the front of the machine. Depending from the front end of the headcasting 3| is a downwardly tapered spindle-housing 34 within which is,disposed a' hollow, vertical, indexing spindle35 that is arranged to be periodically indexed or angularly rotated through 90 degrees by mechanismsubsequently to be described;

As is most clearly shown in Figure 3; the-lower. end of the spindle housing 34- carries alower bearing 36 for the spindle 35, and also carries a double cam: structure 31 disposed concentrically about Secured on the lower end of spin said spindle. die '35 by key 38, between taperedcollets 39, 39

on said' spindle, is a turret 40, a nut '4l being threaded onto the end portion of the spindleto retain the collets 39 and turret m-iniassembled .relation. Disposed interiorly of the hollow spindle 35, and spaced from the wall thereof, is a pipe .42 .for conveying an. elastic fluid, such as air,

under high pressure, from a' source of supply subsequently to be I described; the space. between secured. The vise jaws 55arepivotallyniounted.

at their lower ends upon a radial armf-EB. ofthef arcu'atemetal plateor apron 5'lforsupporting the pipe 42 "and "the spindle wall constituting a passage orconduit 43 for fluidunderlow pressure froma source of ,supply 'subsequent'lyto be; de-

scribed' Th'e'lower end of the pipe 421s mounted in. acap' 44' that seals the lower endofpassage 43',- said' cap, beingformed with a suitable bore 45 into which is threaded a coupling 46. for a flexible delivery tube 41. Asimilar coupling" 48 for a fiexibi qeliveryftube 4s isthreaded through he l b s n e' 35.1m 19 es p s 43' therein. The turreti lfl is 'for nfedfwith 'four radial. arms, 50,; 50 that are disposed at rightangles to each other, said arms s upporting. re

spective workiholdinglunitsf 1 ,7 4

,The construction iof the respective work-hold inglunits will best 'e understood by reference to Figures 7 to; 13 "inclusive; The work, herein designated 5 .consists of a length of 'unvulcanized rubbertubing, and in thesplicing of the ends thereof 'to'form an endless tube, the end portions thereof are flattened asshown inljigures' 11 to '13. To this'end'there is'provided for each tube end anpupperdm block 52 and a lowerdie block 53,whi'cl'i'die blocks'fwhen in juxtaposed position, define ,a relatively; long and narrowl recess wherein T the tub'e"'ends are securely held in flattened conditi on as shown in Figures land 10,- The lower die" blocks 53ar'e mounted upon respective die holders ,5fl and the latter are car ried upon the upperends'of respective opposed;

viseejawsor. arms 55 'to which they are. adju'stably' turret "t0. TEach of the' vise'aiaws 5511s formed at its top with a laterally extending'bracket por-' tion 56, and carried thereon is a transversely fiat,

the work 5| clear of the vise jaws 'and theiroper ating mechanism."

The vise-jaws55 are angularly movable about their pivotalsupport' 50 so as to be spread apart, as showniin Figure 1, .forthe mounting and re' moval'of the work, and to permittrirniningjof the,tubeends,.as,shown in Figure 12; mate be brought toward each. otherso that the-respectivedie blocks 5Zj, 5 3-lfare fiiiigabutting'relation; as shownin Figures 11' and .13, -to effect the butt-,

splicing ofthetrimmedtube ends; For'swinging; the'..vise'-, jaws'.5 5 ,as described, there are provided re pect ve, do bleic in fluid re u dcylinders 59',fe ach of which has, its lower head pivot'ally.cginnectedjat 'so' toanfadjustable, hori zont'al' 'armw'lthat is secured to andp'rojects cylinder 59;

laterally from the lower end of a T-shaped bracket 62 that is fixedly secured to the arm 503 of turret 40. The bracket 62 is formed with pairs: of oppositely extending, horizontal arms 62a, 62a,

and between the outer ends of each pair of arms is pivotally mounted one arm 63 of a toggle of which the other arm 64 thereof is connected to the vise-jaw 55.- The adjacent ends of toggle arms 6t,- 64 are pivotallylconnectedat 65 to the outer end of the piston rod 66 of a fluid pressure When thelower ends of cylinders 59 are, charged, the vise-jaws 55 are in the position's'shown in full line in Figure 11, and they are in the broken line positions of said figure when the upper endsjofsaid cylinders are charged.

As is most clearly shown in Figure 10, the lower ends of cylinders 59 are charged upon occasion,

with high'pressure fiuid through pipe 6'! and the upper'ends'of said cylinders normally are charged.

with low pressure fluidthrough pipe 68.

fMounted' upon the outer end portion'of eachr'adialarm 5B is a yoke 'Hlthat is formed" with a pair of 'arcuate, divergent braCket-arms 'IUQJUa,

. the end portionsof the l,atter]being angular so asto be disposed'paralleli'to the arm 50 and toeach other; as shown in} Figures 10 and 11. In the parallel portions of saidjbracketarms 10a aremountedrespective adjustable stop-screws 1| that are so positioned as to be'engaged with abutments [2 on the outer faces of vise-jaws 55, in the :open position of thelatter, and thereby determinately'to limit the openingof said jaws under the power of cylinders 59. x

Positioned below the turret and the. work-holding units isja pan ortray 14 that is supported from the brackets 6'42 by respective hangers I5.v

This tray supports the major portion of the work while the respective end portions of the work are being butt-spliced.

The upper die blocks 52 hereinbefore mentioned, are carried by respective upper die holders 'IT-Qeachdie bIock being spaced from its holder the die 'blocks lightlyupon thework to hold it in the work-holders and for subsequently applying power to'confine the work tightlywithin the'die holders during the tube-trimming and buttsplicing operations. The power means also is utilized for opening the die-blocks to permit removal of the finished'work., I

As is most clearly shown in Figures 7 to 10 inclusive, the upper die holder 11 is pivotally mounted; upon a; hinge pin 82 in a bracket-like rearwardextension.83jof the lower die holder 54. Rearwardly of and somewhat below hinge pin 82 the extension 83',is formed with a bearing for a 1 rock shaft Mthat is formed with an upwardly ex-,

tending arm 85 constituting one element of a toggle. Keyed to the rock shaft '84 is a downwardly extending crank arrnBB that has its free end pivotally connected to the outer end of the piston rod 31. of a double acting,. fiuid pressure operated cylinder 88. The rear end of the latter is pivotally mounted at 89 upona downwardly extending portion 90 of the bracket 56" of the vise-jaw 55. The front end of the cylinder 88 normally is Qharged'with low pressure fluid delivered thereto

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