US1662218A - Feeding device for shaping presses - Google Patents

Description

March 13, 1928.

S. F. TOJEK FEEDING DEVICE FOR SHAPING PRESSES `March 13, 1928.

s. F. ToJEK FEEDING DEVICE FOR SHAPING PRESSES Filed Aug. 2. 192e .lli/g3.

3 Sheets-Sheet 2 A TTORNE Y.

March 13, 1928.

S. F. TOJEK FEEDING DEVICE FOR SHAPING PRESSES 3 Sheets-Sheet 5 INVENTOR.

ATTORNEY.

Filed Aug. 2. 1926 Patented Mar. 13, 1928.

unirse stares ...PATENT ortica.

STEPHEN F. TOJEK. 0F MILWAUKEE, WISCONSIN, lASSIGNOE, T0 STEPHEN E. TOJEK AND PHILIP 'TO-TEK, COPARTNERS DOING BUSINESS UNDER THE kFltlvlf NAME AND f STYLE 0F TOJ'EK BROTHERS, OF MILITAUKEE, WISCONSIN. i

FEEDING DEVICE FOR 'SHAPING PRESSES.

'My invention relates toimprovements in feeding; devices for shaping presses, of that class in which a plurality of thin disks or blanks of paper or similar' material are to be deliveredfrom `the .bottomroii a pile or stack to a shaping press 'having a die in which the superposed blanks may be simultaneously shaped by a single operation ot the press plunger.

The object of this invention is to provide `improved means for Jfeeding the blanks from the bottom of the pile tothe press in vsynchronism lwith the. movements of the press plunger.

There are two stages `ot the blank feeding operation, i.re., the separating stage. which involves fa separation of a desired number or Ybundle of blanks from the bottom ot the pile in the magazine and the vfeeding stage which involves a delivery of the separated blanks from a lower or base portion o'l the magazine lto Jthe press. The separation of -the blanks is accomplished by a set of bladesfcarried by a slide similar to 'that disclosed in Letters Patent to H. C. lllairrvey, No. 1,238,138, dated August .28: 191

Specifically stated, the Vprimary object ot' `this invention is to provide means wherehy the press will automatically actuate and control the separator blades to deliver a bundle ot blanks into the path of a feed jblock or follower which is 'then also automatically actuated to deliver' the blanks to the press in a quick initial movement, followed by a progressiveV retardation and substantially a final dwell as the blanks are positioned upon the die, the follower being,r then retracted by a spring and with a quick throw, in time for the next blank separat ing stage of the feeding operation. `This `enables `me to operate the 'press and feeder 'ata 4*high rate of speed, the only retarded movement being that required for accurately positioningr the blanks on the die.

Another object 4of this invention is 'to `providea `feeder which is adjustable for feeding blanks of diierent sizes. V

In the drawings:

Figure ly isa front elevation of a. machine embodying my invention, the machine illustrated beingused in the manufacture of paper cups, andk portionsof the feedingr mechanism and magazine being' broken away or illustrated in vertical section.

Figure 2 yis a plan view of the base portion of the magazine. sho-wing thesepara tor blades and slide, with associated `parts,`

the magazine posts beingy shown in cross `section.

Figure 3 is a side elevation of the machine as 'viewed 'from the right-'hand side in Figure l.

Figurefa is a' plan view `of 4the *feeding mechanism.

Like parts are identified ftheV same reference characters throughout the several views. i i

ll. which is guided by the verticalgposts `l2 and-:actuated from Sthe overhead shaft 13 `through crank llkconnecting rod 15 (Figure that a variety of dies of` dili'eringr sizes and shapes maybe used interchangeably. Tbopaper blanks are stored in th form 0f a pile'oi"superposed blanks in a magazine composed of a set ot vertical rods 25 socketed in the bottom plate 26 of the magazine Aor teeder base. which is mounted on` the table 1 8. These blanks are normally supported von a blade 27 which is adiustably secured to a slide 28 by bolts 29, vwhich passthrough slots 30 in the blade, as clearly shown in Figure 2. rThe slide 28 is mounted for horizontalmovement lin suitable guideways 3l formed on the hase plaie QG. By letl'actling this slide (to ille right in Figure 2), the blade Q7 may be withdrawn fronl beneath the pile of blanks, and ille blanks will tlllls be allowed to drop upon another blade 35 sin'lilarly secured by bolts "29 to the opposite end of the saule slide, but at a lower level. The blades QT and 35 lic in horizontal planes, which ale separated vertically to an extent corresponding: witll ille height of thc bundle of superposed blanks io be fed to i'he press by a sinale feeding operation. Therefore, when the pile of blanks ill ille magazine has been allowed to descend b v gravity to ille blade a return lllovenlent of the slide Q8 will cause ille point 2T of the blade 7 to enter ille pile of blanks at ille desired height above its bottonl to separate those blanks below tllis blade Il' frolll those above it. Sinnli- 'tancousll' witll tllis separatingr lllovelnent of ille blade 27. ille blade 35 will be withdrawn, whereupon ille se laratcd blanks will be perllliticd io drop into a feedway 37 fornled by ille plaie 26. and a set of adjustable side all nlelnbers and which teedway extends rearwardly to guide ille blanks to ille die 17.

The blanks are pushed alone' this feedway 3T by a follower or pllsller block 3S, wllicll is provided witll an actuatingr arnl 39 extending; downwardly through a slot in the plaie '26 and table 18 and connected with the elbowed slide bar f1.0. The side walls i1 and 4Q of ille fecdway are adjustable to increase or dilninisll ille width of ille guideway ill accordance with ille size of the blanks whicll are being` fed. Each wall comprises a flanged portion of a plaie 44 having laterally-extending slots through whicll bolts 45 nlay pass to secllre these plaies 44 to the plate 26.

The slide Q8 is similar to that sllown in said patent to Harvey. Also ille separating blades 27 ant the actuating' crank arnl 50 alld associated latch har 51, with ille headed catch pin 53 on ille blade carrying slide, the latcll operating spring 54. ille oblique throwout arlll abutment pin 56. slide reiracting weight 57 and associated cable 58, are subsiantiall.,v disclosed in said patent .and require no further description. Bilt in illy illlproved structure ille crank arnl 50 is conneeted with ille latcll bar 51 by a stud 65 adjusiably engaged in the longitudinally e.\'tcndinr crank slot G6 whereby the stroke of ille slide nlay he varied in accordance with ille size of ille blanks to be fed. This crank arlll 5t) is acillated from the vertical feeder shaft 67 through the disk GS, crank pin 69, connectingF link 70, slotted crank 71 and vertical shatt 72, the link bar 70 being' adjustably pivoted in the slot of crank 71 by a pivot bolt 78.

The feed block or follower 38 will also be reciprocated along ille feedway by ower derived from ille vertical shaft 67, this shaft beiner driven fronl ille shaft. 13 through ille bevel fears 75 and 7G. The connections for translnitiiney nlotion fronl this shaft to the feed block or follower 3S will not he described.

To actuate ille, feed block or follower 39 for feeding ille separated blanks io the dies of ille press the shaft G7 is provided with a eanl Sil having a bearing surface Si adapted io engage :l roller 9:2 on a sind S73 lnollllied on a lever Sli-t connected with ille llndcr sur- I'ace of ille table by a fulcrlun pill S5. This lever is nornlally held in ille position ill which it is illustrated by full lines ill Fig. ure 4, by nleans of a` springr 86. wllicll connects itl witll the table at S7, hllt when the lever is swung from this position by ille pressure of the can'l Si) against the stud roller 82. nlotion is transmitted to ille fccd block or follower 38 through ille lillk 90` level' 9], and lillk 92. ille latter being pivoi'ally conueeicd to ille elhowcd slide llar 40. This nlotioll will continue until ille level' 9i has been swung to the position ill which it is indicated hiv dotted lines in Figure Il. The bearing surface S1 of ille canl will be so contoured illat ille final nloven'lent of ille lever 91 and ille associated follower B8 will be relatively slow as the portion 93 of ille cani passes the roller 82. At this tillle the blanks will he placed by ille follower in position on thc die 17. There will tllen be a slight dwell ill ille nlovcnlent of the follower' until the elld of ille calll passes ille loller SQ, whereupon ille sprin; lr Sti will instantly restore thc levers Si and 91 to their nol'lllal position with the feed block or follower 38 retracted.

lVhen ille lever 91 is ill ille dotted lille position of Figure 4, ille feed block will have nloved illwardly or rearwardlyv alld will have carried the separated pile of blanks io a sliperposcd position on the die lnenlhcr 17. The illller face of the follower is concavely cllrved ill substantial confornliiy to ille peripheral contour of the blanks. lVheu blanks of different dianleiers are io be fed. the .side walls of ille slideway are correspondingly adjusted as above explained, alld a follower 38 of appropriate size. will, of course. he substituted for the one shown in the drawings. and in order that ille range of nlovcnlent of ille follower nlay he varied to correspond with variations in the diametersof the blanks that ale beine; fed, ille lever 91 is forllled ill overlapping sections, one of which is longitudinally slotted and connected to ille other by set screws 94. By adjustinfr these sections upon each other and securing ihcln tofreiher by ille set screws 94- in their newly ad]usted positions, the stroke of the follower may be varied in proportion to ille increased or diminished length of the lever 91.

The position of the canl 8O on the shaft G7 is sllch that it will not actuate the lever 84 RLL.

Uil

llltl llll and its associated connections with the follower 38 until after the separator slide has been released from the latch bar 51 and retracted by the weight 57 to deliver the separated bundle of blanks into the feedway. But when this has been accomplished, the cam 80 will actuate the follower with a quick but controlled stroke, the movement of the cam actuated stud 83 being multiplied in the compound lever mechanism above described. But as the blanks approach the receiving die i7, the motion of the follower is progressively retarded after the cam bearing point 93 reaches the stud roller 82, and the contour of the end of the cam is such that the final movement of the follower is scarcely perceptible, there being substantially a dwell just before the end of the cam clears the roller 82. Thereupon the abrupt face 96 of the cam allows a substantially instantaneous retraction of the follower under the recoil of the spring 86.

I claim:

l. Ina shaping press for blanks of paper and similar material, said press having a driven rotary shaft, the combination of a magazine for the blanks, means operated from said shaft for separating bundles of superposed blanks from those in the magazine, a reciprocatory feeding device for delivering the bundles of blanks successively to the press, compound lever mechanism for actuating said feeding device, and a cam on said rotary shaft adapted to actuate the power arm of said compound lever mechanism once during each turn of the shaft.

Q. The combination with a rotary driven shaft, of a drawing press, of a magazine adapted to receive a pile of supcrposedL blanks to be fed to said press, a cam on said shaft, an associated lever provided with a bearing to be engaged by said cam once during each revolution of the shaft to actuate said lever, compound lever mechanism for multiplying the movement imparted by said cam, a lfeeding slide for delivering blanks from said magazine, and link connections between said feeding slide and fthe driven member of said compound mechanism.

In a shaping press, the combination of a pivoted lever provided with a. laterally projecting stud, a press operated rotary cam adapted to transmit motion to the lever through said stud, a. reciproeatory feed slide for delivering material to the press, and motion amplifying connections for transmitting movement from said lever to the feed slide. i

4. The combination with the stationary die of a shaping press, of a `feed table, a magazine having a base' portion mounted onmsaid table and provided wit-h a. slide\vay, the walls of which are adjustable to increase or diminish the width of the slideway, means for successively delivering bundles of blanks from the upper portion of the magazine to said slideway, a follower reciprocable in said slideway to deliver said bundles ofblanks to the press, and press actuated means for reciprocating' said follower in timed relation to the movements of the press and the bundle separating devices.

5.The combination with the stationary die of a shaping pressof a feed table, a magazine having a base portion mounted on said table and provided with a slideway, the walls of which are adjustable to increase or diminish the width of the slideway, means for successively delivering bundles of blanks from the upper portion of the magazine to said slidcway, a follower reciprocable in said slideway to deliver said bundles of blanks to the press, press actuated means for reciprocating said follower in'timed relation to the movements of the press and the bundle separating devices, said press actuated means including a compound lever mechanism linked to the follower and press actuated cam for moving the lever mechanism in one direction, and a spring for retracting said mechanism when released by the cam,V

(i. The combination with a shaping press, of an expansible magazine for storing blanks to be fed to the press for shaping operations, an expansible slideway adapted to receive the blanks from the storage portion ot' the magazine, press controlled means for delivering bundles of blanks from the magazine to the slideway and subsequently delivering them to the press in timed relation to the movements of the press, and independent means for retracting the blank separating and delivering mechanisms.

`STEPHEN F. ToJEK.

lOOy

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