US2498850A - Stacker mechanism for coil springs - Google Patents

Description

Feb. 28, 1950 c. G. coRsER 2,498,850

STACKER MECHANISM FOR COIL SPRINGS Filed Feb. e, 1948 4 a Sheets-Sheet 1 1950 c. e. CORSER 2,498,850

STACKER MECHANISM FOR- COIL SPRINGS Filed Feb. 6, 1948 a Sheets-Sheet 2 Feb. 28, 1950 as. coRsER 'STACKER MECHANISM FOR 0011. SPRINGS Filed Feb. 6/1948 3 Sheets-Sheet s I IHTHTIIMI 1 I Patented Feb. 28, 1950 $498,850 STAGKER MECHANISM EOBKCOILSPBINGS GalvirrG. GorsemChicago, III}, assignor' to John son Spring Guslii'on Company; Chicago,

corporation: offlllinois Applicationfehmary 6, 1948',,Seria[1N0. .6;652'

a. transfer. mechanism for advancing" the" coil springs from the coiling mechanism through-the knotter mechanisms to the stacker mechanism. Thestacker mechanism receivesthecoil springs from the transfer" mechanism and stacks' the same in conveniently handled" bundles:- Irr so stackingea'c'h coil.sprin'gis"telescopically received Within. each; previouslystacked spring;

Ithas been found-desirable*tostack'the springs in such manner 'that' the' knotted portions-'ofthe springs are. atthe forward part" of" the= springs as they' are" advanced; andteles'copically received inthe stack of springs: This greatly 'facilitat'esthe" stacking; However; many coil spring prodiicing machines do not accurateiy presentthe coil-springs" tothe stacker mechanism with"- the knotted portions of the springs leading so" that diiiiculty encountered in the stacking operation.

The principal obj ect' of this: inventiom therefore;- is to provide an improved stackerrmechanism for coil springs wherein the" coil springs are' received" from the coil" spring producing: ma-

chine, wherein the coil springs are accurately rotated t'o'a position having'the: knotted-portions thereof i leading; and wl'iereim the-coili springs/are advanced andtelescopically 'receivediini thePstack and wherein'tlie'stacktissadVanced?asscoilisprings.'

are addedithereto:

More specifically; it issan; obj 86h. offthis invention to: provide theimproyed stacker: mechanism with a pair-of spaced".side-.-plates, apair of-spaced discs-.rotatably'mountedsbetweemthe sideplates ion-receivin ,coilsprings.to bestackedand ionrotating'vthe. same to the.desiredijposition and. a pair oi spacedfingersslidably mountedbetween the side. plates ion. ejecting. the rotated" coiLsprings irombetween thevdiscs, for. stacking, the. coil' springs betweenthe ing the stacked coil springs" between the? side side plates and for; advancplates. The.discsand'fiiigers"aremovediin-timed reiation' andthe .discs'may also'berslidablymoved as well as rotatably moved? lllE, a:

Further objects of this invention reside in" the details of -constructi'o'n of the stacker mechanism and the cooperative relationship between the component parts thereof.

Other objects and-advantagesofthis invention will become apparent to those skilled" in" the art upon-reference to theaccompanying specification, claims and 'drawings in which:

Figure 1*is' adiagrammatic illustration of a coil' spring; producing machine with the stacker mechanism ofthis inventionapplied thereto.

Figure Z'is a; composite-perspective view showing the positionof the coil spring as it ispresented to the stacker mechanism and the positiOHS'IOFth'GC'O'fl springs stacked by thestacker mechanism.

Figure 3 is a top plan view of thestacker mechanism;

Figurei is a verticalsectional' view "taken'substantial-ly-along the line 4 -4 of Fig. 3 and'showing" the parts in* one position.

Figure 5* is a; sectional View similar'to Fi'ge 4,

butshowingth'e' parts in another position;

Figure 6'- is a vertical sectional view'taken sub- -stantiallyfialong'the'line 6 6 of Fig: 4, and

Fi'gurefi'i's a perspective view of one of the discs" and itsassociated mechanism.

Referring first 'to' Fi'g. 1; a coil' spring producing'machineis generally-designated at In" and it maybe of the type shown and described inthe aforementioned application. The machine Ill operates to produce cQil' springs" I 'l 'such as shown in Fig"; 2', whereinthe' ends of thesprings are knotted-as at I21 The end" convolutions' of the springs may, also, be provided; if desired; with offsets IS;

The coil springproducing machine l 0 includes a coilingmechanisnr- IS fOr coilingwire intovthe double-ended" coil spring I I When'the coil spring is thusformed, it is grasped by fingers l6, carried='by=a radia1"arm= i T of a transfer: mechanism l8 "which isintermittently rotated" through a Geneva" motion (not shown) by= a'rotary shaft I 9. The transfer" mechanism l8=3inc1udes=av plurality of such' radial" arms I and fingers IQ for grasping-andtransferring i-the coil springsa's they are formed by the coiling-mechanism. The coil springs thus-formed" are advancedto a: knotting mechanism ZWwherein oneend. ofthe coil spring -is'"knotted, andifdesii'edlcrimped' intolan offset: The coil springs are=-then advanced to; a secon d k'n'otting mechanism =2 wherein the other end of the coil spring is knotted and may-also be= crimped intoan oifset; The. knotted coil 55 springsarethen advanced 15ythe=transf en mechanism to the stacker mechanism of this invention generally designated at 22. Since the coil producing machine diagrammatically illustrated in Fig. 1 is fully disclosed in the aforementioned application a further description thereof is not necessary.

As will be noted in Fig. 2, the coil springs l l are advanced along the path of the arrow A into the stacker mechanism 22 with the knots l2 being located on the upper side of the spring. In order to stack the coil springs in the most expeditious manner the coil springs are rotated about their axes in the direction indicated by the arrow B so that the knots of the springs are at the forward parts thereof as they are moved into the stack. Thus, the springs as they are advanced in the stacker mechanism are readily telescopically received in the stack of springs as indicated in Fig. 2.

The stacker mechanism 22 includes a bottom plate 24 and side plates 25 and 2B. The bottom plate 24 terminates at 27 to permit coil springs to be inserted between the side plates 25 and 2'6 by the transfer mechanism. I8. Converging guides 23 extending downwardly from the side plates operate to guide the springs as they are fed to the stacker mechanism and to compress the same between the side plates.

Each of the side plates 25 and 26 are provided with a longitudinal slot 30 for slidabl receiving a pin 3|. The pin 3! associated with the side plate 25 carries a disc 32 and the pin 3| associated with the side plate 26 carries a disc 33. The discs 32 and 33 are thus spaced from each other and are located within the side plates 25 and 25. When the coil springs are fed to the stacker mechanism under the guidance of the converging guides 28 they are interposed between the discs 32 and 33 with the knots of the springs being located upwardly. In this respect the spacing between the guides 28 at their upper ends is substantially equal to the spacing between the discs 32 and 33. The pins 3| extend outwardly through slots 34 in levers 35 and 35, which in turn are keyed to a shaft 31 rotatably mounted in opposed brackets 38 and 39. In this way the levers 35 and 35 are connected to oscillate together and when the levers oscillate they move the pins 3| longitudinally along the slots 30 for imparting longitudinal movement to the discs 32 and 33. The discs are thus moved from the receiving position as indicated in Fig. 4 to the ejecting position as indicated in Fig. 5, the extent of such sliding movement being determined by the length of the slots 3|].

As indicated in Figs. 4, 5, and '7 the discs 32 and 33 are each provided with a radial groove 4! for receiving blocks 42 which are pivoted by pins 43 to the side plates 25 and 25. Thus as the discs 32 and 33 are slidably moved by the levers 35 and 35 the slots 4!, blocks 42 and pivot pins 43 cause the discs to rotate simultaneously. As will be seen from Figs. 4 and 5, the discs are rotated through substantially 90 as they are moved between the receiving position and the ejecting position. In this way the coil springs H which are interposed between the discs 32 and 33 are advanced by the sliding movement of the discs and are rotated by the rotar movement thereof so that when the springs arrive at the ejecting position as illustrated in Fig. the knots l2 of the springs H are at the forward side of the 4 for slidably receiving a shoe 41. A bracket 48 is secured to the shoe 41 and in turn carries a depending arm 49 provided with a slot 50. The slot receives a pin 5| carried by a lever 52 which is loosely journaled on the shaft 31. The lever 52 is in turn provided with a slot 53 for adjustably receiving a pin 54 connected to one end of a link 55, the other end of which is pivoted at 56 to a crank arm 51 carried by the power shaft IQ of the coil producing machine ID. Thus, as the coil producing machine It operates to form coils and advance the same, the power shaft I9 through the link 55, lever 52 and arm 49 imparts sliding motion to the bracket 48 and shoe 41, this motion being in timed relation with the operation of the coil spring producing machine I 0.

The bracket 48 carries a plate 60 which in turn carries a depending finger GI and also a plate 62 which in turn carries a depending finger 63. The fingers GI and 63 are therefore spaced from each other and are located inwardly of the discs 32 and 33. By reason of this spacing the fingers 3| and 63 are permitted to sweep across the faces of the discs 32 and 33 to eject coil springs from between the discs 32 and 33 when the discs are moved to the ejecting position shown in Fig. 5.

The shoe4l carries an abutment 55 adapted to be engaged by the lever 35. A spring 65 is hooked to the lever 35 as at 6? and to a post 68 carried by the bottom plate 24. The spring 65 therefore presses the lever 35 into engagement with the abutment 65 to form a spring biased one way connection between the shoe 4! and the lever 35 and hence between the spaced fingers BI and 63, and the spaced discs 32 and 33.

With the parts in the position shown in Fig. 4, the fingers 6| and B3 are retracted and the discs 32 and 33 are also retracted by reason of the spring biased one way connection. The parts are thus in the receiving position. The transfer mechanism of the coil spring producing machine then inserts a coil spring between the discs 32 and 33 as illustrated in Fig. 4. The fingers El and 63 are then caused to advance and as the fingers are advanced the spring biased one way connection advances the discs 32 and 33 to the ejecting position at the ends of the slots 39 as illustrated in Fig. 5. Further motion of the discs is arrested at this point. Thus the coil springs II are advanced by the sliding movement of the discs and are rotated by the rotating movement thereof. Following the arrest of the movement of the discs, the fingers 6! and 63 continue to move for sweeping the coil spring from between the discs and for telescopically inserting the coil spring into the stack of springs. As springs are continued to be fed to the stack of springs the stack of springs is automatically advanced between the side plates 25 and 26 by the feeding action of the fingers 6! and 63. Because the spacing between the discs 32 and 33 is less than the space between the side plates 25 and 26 proper telescopic feeding of each spring into the stack of springs is assured. Also, because the springs are rotated by the discs to cause the knotted portions thereof to be at the forward part of the springs, the springs are readily received in the stack.

While for purposes of illustration one form of this invention has been disclosed, other forms thereof may become apparent to those skilled in the art upon reference to this disclosure, and

therefore, this invention is to be limited only by the scope of the appended claims.

I claim:

1. A stacker mechanism for coil springs comprising a pair of spaced side plates, a pair of spaced discs slidably and rotatably mounted between the side plates for receiving coil springs to be stacked and for advancing and rotating the same, a pair of spaced fingers slidably mounted between the side plates for ejecting the rotated coil springs from between the discs, for stacking the coil springs between the side plates and for advancing the stacked coil springs between the side plates, and means for slidably and rotatably moving the discs and for slidably moving the fingers in timed relation.

2. A stacker mechanism for coil springs comprisin a pair of spaced side plates, a pair of spaced discs rotatably mounted between the side plates for receiving coil springs to be stacked and for rotating the same, a-pair of spaced fingers slidably mounted between the side plates for ejecting the rotated coil springs from between the discs for stacking the coil springs between the side plates and for advancing the stacked coil springs between the side plates, and means for rotatably moving the discs and for slidably moving the fingers in timed relation.

3. A stacker mechanism for coil'springs comprising a pair of spaced side plates, a pair of spaced discs slidably and rotatably mounted between the side plates for receiving coil springs to be stacked and for advancing and rotating the same, a pair of spaced fingers slidably mounted between the side plates for ejecting the I rotated coil springs from between the discs, for stacking the coil springs between the side plates and for advancing the stacked coil springs between the side plates, means for slidably moving the discs and fingers in timed relation, and means including stationary pins and radial grooves in the discs for rotating the discs as they are slidably moved.

4. A stacker mechanism for coil springs comprising a pair of spaced side plates, a pair of spaced discs slidably and rotatably mounted between the side plates for receiving coil springs to be stacked and for advancing and rotating the same, a pair of spaced fingers slidably mounted between the side plates for ejecting the rotated coil springs from between the discs, for stacking the coil springs between the side plates and for advancing the stacked coil springs between the side plates, means for slidably moving the fingers, a spring biased one way connection between the fingers and the discs for slidably moving the discs as'the fingers are moved, stops for limiting the movement of the discs, and means for rotating the discs as they are slidably moved.

5. A stacker mechanism for coil springs comprisin a pair of spaced side plates, a pair of spaced discs slidably and rotatably mounted between the side plates for receiving coil springs to be stacked and for advancing and rotating the same, a pair of spaced fingers slidably mounted between the side plates for ejecting the rotated coil springs from between the discs, for stacking the coil springs between the side plates and for advancing the stacked coil springs between the side plates, means for slidably moving the fingers, a spring biased one way connection between the fingers and the discs for slidably moving the discs as the fingers are moved, stops for limiting the movement of the discs, and means including stationary pins and radial grooves in the discs for rotating the discs as they are slidably moved.

CALVIN G. CORSER.

REFERENCES CITED Name Date Number Ziler Feb. 3, 1931

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