US1424831A - Machine for forming reenforcing girths - Google Patents

Description

A. S. KUX.

MACHINE FOR FORMING REENFORCING GIRTHS.

APPLICATION FILED NOV. l0. |917.

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IIIII A. s. Kux. MACHINE FOR FORMING REENFORCING GIRTHS.

Patented Aug. 8, 1922.

APPLICATION FILED NOV. I0. 1917. 15,424,831.

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A. s. KUX.

MACHINE FOR FORMING REENFORCING GIRTHS.

APPLICATION FILED NOV. I0, |917.

Patented Aug. 8, i922.

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ALBERT S. EUX, OF EICAGO, ILLINOIS, SSIGNOR T0 SIGNODE SYSTEM, INC., A CORPORATION F DELAWARE MACHINE FOR FORMING REENFORCING GIRTHS.

Specification of Letters Patent.

Patented Aug. 8, 1922.

Application filed November 10, 1917. Serial No. 201,221.

' of which the followingis a specification.

This invention relates to machines for forming reenforcing girths to be subsequently used as elements of joints in tension resisting box strapping or the like.

It is anobject of the invention to provide a machine of the character described of economical and simple construction and' having a large capacity. Other objects and advantages of the invention will appear as the description to follow proceeds.

In-the drawings Fig. 1 is an end elevation of the machine;

Fig. 2 is a transverse cross-sectional elevation of the machine;

Fig. 3 is an elevation of the rear or feeding'4 end ofthe machine;

`igs. 4 to 9 are fragmentary prospective views of elements of the machine' showing steps in the formation of the reenforcing girths Fig. 10 is an elevation showing the stripping mechanism;

Flg.. 11 is a perspective View of reenforcing girths, such as formed by the machine.

The machine of my invention is designed to take a flat strip of metal whose width is the width of a single reenforcin girth flattened out or unfolded, and pre erably of a length aulicient to form a plurality of reenforcing girths; to feed this strip into the machine; to cut it into blanks each corresponding to the length of a reeiiforcing girth; to form these blanks into reeinforcing girths, and to eject the finished reenforcing girths from the machine. The successive stages of the operation will be readily understood froman inspection of Figs. 4 to 11.

In the drawings :-A pile of strips is placed upon the feed table 2, which is provided with an inclined feed plate 3. The operator stands behind the feed table 2 and pushes the strips one by one down over the inclined feed plate 3 into a pocket formed by the stationary plate 5 and themovable stop 6. In this position of the strips, nippers, each comprising a resilient finger 7 and a finger 8, move forward, each nipper 7-8 seizing a portion of the strip which is to correspond to a blank. These nippers carry the strip to the cutter blocks 9, when the cutters 10 sever it into blanks, each the length of a finished reenforcing girth. After the cutting operation, the blanks are moved forward by the same nippers over the travelling rail die 11, and the nippers af-8 return. Before the nippers 7--8 have begun their return movement, however, a plurality of permanent magnets 12 descend each straddling 11,-as shown in Fig. 9 to form a reenforcing girth 15, such as shown inFig. 11. Then the entire die 11, which is made at least twice as long as the length of the strips fed to the machine, is moved longitudinally by appropriate mechanism'tobe described,

exposing a new part of the die to receive the next batch of blanks. and upon the subsequent return movement of the die the reenforcing girths formed upon the preceding cycle, are stripped therefrom by the finger 16, which drops into the groove 17 in the top of the die 11.

Having outlined clearly the fundamental operation of the machine, I will now describe in more detail the mechanism by which these results are accomplished: The fingers 8 which form one'half of the nippers, comprise longitudinally extending strips which are all secured in a carriage, comprising a transverse plate 21, upon which the rear ends 22 of the strips 8 are supported. Integral with the cross plate 20 and at'either side thereof, are downwardly faced concave guides, or runners, 23 (one of which uis broken awayin Fig. 2 to show the plate 20). These guides run upon the guide rails 24 upon extensions 25A of the main side frames 26 of the machine. The frame extensions 25 carry at their inner ends the blocks 27, upon the upper. faces of which are mounted the plates 5, each of which is ooved as indicated at 29 to receive the sliding strips 8, the tops of the strips 8 being substantially flush with the top of the plates 5.v The sliding carriage is operated by the link 30 connected to they carriage plate 2() as shown at 31, and

'at its other end 32 connected to the lever 33,

provided with a cam roller travelling in a cam path 34 in the cam 35, this camibeing which the operator feeds the strips and are vided to obtain this result.

withdrawn by means of the arm 37 of a'bell crank pivoted on the shaft 38 journalled in the side frames 26 and having a second arm 39 provided with a cam roller which is operated by an outer cam 40, which is upon the opposite side of the cam 35 containing the cam path 34 hereinbefore described.

As previously explained, the stops 6 having been Withdrawn, the nippers carry the strips to a position directly above the cutting blocks 9 and there permit the strips to remain for the cutting operation, an appropriate dwell in the cam path 34 beingpro- The cutting blocks 9 are removably secured in seats 41. removably secured into the heavy transverse bed plates 42 bolted at each end to the upper standards 43 of the machine, one at each side thereof.

Journalled in the upper standards 43 1s the shaft 44 driven by the chain 45 meshing with the sprocket 46 which is engaged at its other end with the sprocket 47 upon the main shaft 36 of the machine. The shaft 44 is provided with cranks 50, to w-hich are connected the links 51, rendered adjustable by being divided, screw threaded` and inserted into the screw threaded blocks 52. The lower ends of the links 51 are connected to the transverse block 53, slidably mounted lsecured the plates 55 upon which are mounted the cutters 10. It will be noted that the cutters 10 are provided with inclined cutting faces and, moving between the cutting blocks 9, the tops of' which are square, perform a shearing cut upon the strips still held by the nippers 7 8, cutting out a small width of material between each successive pair of the resulting blanks.

Thisoperation takes place during the first dwell in the cam path 34. In the continuing vrevolution of the cam wheel 35, the nippers 7-8 which now each carry a blank for a reinforcingr girth; are again advanced and are subsequently caused to come to rest momentarily above the rail. ll` where the blanks are first stripped from the lingers and formed by mechanism which has been referred to but which will now be described in detail. l

Upon the shaft 44. which is journalled in the standards 43, as has been described, is a gear 60 which is in mesh with the gear 6l upon a corresponding shaft 62, likewise journalled in the standards 43. The shafts 44 and 62 al'e each removably secured to the standards 43 by the half bearings 63.

It will be apparent,'then, that the shaftv 44-will turn the shaft G2 through this gear connection and at the same rate of speed. Upon the shaft 62 is a crank 65, to which is pivotally connected the link 66, rendered adjustable by the block 67 in the Sallie fashionas the other link 5l, and which likewise supports at its lower end the block 68 slidably mounted between guides 70 secured upon the inner sides of the standards 43. The block 68 carries upon its lower face the plate T3. to which is removably secured the forming die 13, the forming face of which is pro vided with a channel to fit loosely over the top of the rail 1l. Also secured to the block 68, by the bolt and slot connection 74 permitting loose motion, ,-is the depending plate 75. to which are secured a plurality of permanent magnets'12, each arranged to straddle thel nipper 7 8 upon its descent. lt

.will be apparent that in the operation of the mechanism above described the cranks 50 and 65 being differently set and the nippers feeding the material through the machine. with dwells over the cutter blocks 9 and the forming rail 11; that the cutters operated from shaft 44 will descend first while the material is resting upon the blocks 9 to sever the material into blanks, and subsequently the forming die 13 will descend. The magnets first straddle the nippers` behind the blanks, the plate T5 coming to a stop against the adjustable bolts 75 and permitting the die 13 to continue its downward movement. By the time the die 13 reaches contact with the work, the nippers have retracted and left upon the rail 11, the blanks. each blank having been stripped from its nipper and held in place to prevent sliding, etc., by the appropriate magnet. Upon the descent of the forming die 13, the edges of the blanks are bent downwardly around the top of the rail 11, as clearly shown in Fig. 7. after which the forming die moves upwardly.

I will now describe the mechanism l'orll finishing the forming operation. 'lhis mechanism comprises a pair of forming fingers 14 adapted to wi e under the lower faces of the top flange o the rail l1 and to complete t-he formation of the girths into 120 the form shown in Fig. 11. These fingers 14 are mounted upon the toggle levers 30. having extensions 3l connected to the links 32. which are in turn connected at H3 and at that point provided with a roller 34 which 125 rides in the vertical slot between the plates 85 'secured at each side to the side. frames 2G of the machine. By this means, the motion of the two toggle levers 80 is equalize-d. (.)ne of the toggle levers 80 is fixed upon the shaft 130 Maasai 38, and the other is loose thereupon. Also fixed upon the shaft 38, is the crank 90 provided at its lower end with a cam roller travelling in the cam path 91 in the cam 92 upon the main shaft 36 of the machine. The cam path 91 is concentric with the shaft 36 except for one offset 93, so that as the shaft is rocked the fingers 14 move sharply toward each other and separate once for each cycle and for the rest of the cycle remain in open position. It will be apparent that by this operation the blanks are formed into the finished article shown in Fig. 11.

l will now describe'the arrangement for ejecting the finished reinforcing girths from the machine.

The die rail 11 is operated through the rack 100 connected as now described, and is atleast twice as long as the strips 1. The side frames 26 are each provided with seats 105 upon which rests the heavy carrier block 106, which .spans the space between the side frames and forms a heavy pressure resisting bed for the forming operation. Block 106 is channelled throughout its length. A carrier rail 108 slides in the channel in the block 106, and it is this plate which receives the pressure of the forming. operation andcommunicates it to the block 106. The rack 100, above described, ispreferably made separately and secured by screws or the like to the carrier rail 108, and the forming rai1.11

is removably secured to the oppositeor top side of the carrier rail 108.

Mounted in the left-hand side frame 26 of the machine, is the shaft 120 (Fig. 3) equipped with the gear 121 in mesh with the gear 122 on the main shaft 36. The shaft 120 carries upon its opposite end the cam 123, which operates the bell crank 124 (Figs. 1 and 3) pivoted in the boss 125 on the side frame 26. The upper end of the bell crank operates the clutch element 127, sleeved upon a shaft 128, journalled in the standards 129, extending upwardly from the side frame of the machine. A stud shaft 131 is journalled in one of the side frames 26 and is operated by the chain 132 by. means of suitable sprockets from the main shaft 36. Upon the stud shaft 131 is the bevel gear 133, which remains in mesh at all times with ,the bevel pinions 134 upon the shaft 128, said pinions being loose upon the shaft 128, while the clutch ele-ment 127 is splined thereto. It is obvious by this means that the shaft 128 may be revolved in either direction or maintained in neutral position through the intermediary of the clutch sh'own. The shaft 128 carries upon 4its rear end the gear 135, which is in mesh with the rack 10() which operates the forming rail. The cam 123, which operates the rail 11, has the contour shown in Fig. 1 and is devised to maintain the guide rail in stationary position by holding the clutch in neutral position during the forming operation, to subsequently move.` the guide rail .to extended position at one side of the machine and hold it there. while a new batch of reinforcing girths is being formed upon the hitherto unexposed part of the guide rail, and after this operation to return the guide rail to its previous position, in-which half of it extends from the opposite side of the machine. y

Upon each side of the machine is a bracket plate 150 mountedjust inside, the side frames 26. rlhese plates carry the stripping fingers 16 (previously alluded to) operated by the spring 151, between the lug 152 on the finger and the lug 153 on the plate 150. The springs 151 are light springs. and the finger 16 readily permits the formed reinforcing girths to pass thereunder when they are moving outwardly after the forming operation. When the last reinforcing girth has passed. however, the finger 16 drops into the groove 17 upon the guidey rail 11 and upon the return movement of the guide rail strips off the finished reenf'orcing members at either side in an appropriate container not shown.

It will be apparent that the machine is of substantial construction throughout. The blocks 42 which back the cutting blocks 9. and the carrier block 106 which backs the forming operation, are both constructed of' heavy material so as to resist the pressure while the standards 43 are connected at the top by the heavy arch 155. which takes the thrust of the cutting and forming dies. Furthermore, the actual cutting and forming elements are all removable so as to permit the substitution of different sizes to forni different sizes of girths without material change in the machine.

To drive the machine. l provide the belt. pulley 156 upon the shaft 15T joui-nailed in the standard 158 upon the frame extension 150, and at its other end journalled as iudicated in dotted -lines at 160 in one of the side frames 26. shown at 161 to the gear 162 upon the main shaft 36 of the machine. which is of course journalled in the side frames 26. The side frames are appropriately connected to a substantial base plate 167. which carries the standards 168, in which is jourualled the. shaft'169 upon which the lower end of the nipper operating lever 33 is mounted.

The shaft 160 is geared as y feed them forward until they rest upon the blocks 9 (I"ig. whereupon the feeding mechanism is caused to pause until the cutters sever the, strips into blanks each cor-v dled the nippers) strip the blanks from the nippers and maintain them in correct posilion (Fig. 6). The forming die 13 then completes its descent to bend the edges of the blanks down over the die rail (F ig. 7) and subsequently the formingi fingers 1l wipe these edges under the top flanges of the guide rail (Figs. S and 9) after which the die rail is moved to expose a new section for the reception and formation of lanother set of blanks. and on its subsequent return motion is stripped (Fig. 10) of the formed reenforcing girths (Fig. 11) which fall into an appropriate container. It will be noted that the die rail moves half its length in each direction after each operation of the machine. and that formed reenforcing girths are stripped from it at one or the other side of the machine each time it moves.

Having now described my invention. I claimz- 1. In a machine for making metallic reenforcing girths for metallic tension resisting box strapping, means for feeding a strip of girth forming material of a width sufficient to form a single line of girths sidewise` means for severing said strip into a pluralit v of blanks each adapted to form a reenforcing girth. and means for thereafter forming said blank.

2. In a machine for making reenforcing girths. means for feeding a strip of metal sidewise. means for severmg and for forming said strip of metal into a plurality ofl reenforcing girths while continuingr the sidewise movement through the machine, and meansfor ejecting said girths in a direction parallel to the longitudinal dimension of the strip.

3. In a machine for making stamped articles. means for feeding a strip of metal sidewise from one position to another in the machine. means for forming portions of said strip into said articles in a position spaced from but parallel with the original position of the strip. and means for ejecting said articles in a direction parallel with the originallongitudinal dimension of the strip.

l. In a machine for forming reenforcing girths. a die, means for simultaneously feeding a plurality of blanks sidewise onto said die, means for forming each of said blanks into a reenforcing girth on said d ie. and means for subsequently moving said die and girth lengthwise of said die.

5. In 'a machine for making reenforcing girths, a die, means for feeding a plurality of blanks each adapted to make a reenforcing girth sidcwise onto said die. means for simultaneously forming said blanks into tubular reenforcing girths about said die, and means for subsequently moving said girths lengthwise 0H' said die.

6. In a machine for making metallic stamped articles` means for feeding a'n individual strip of material adapted to make a Vsingle line of girths sidewise. means for thereafter severing said strip into a plurality of blanks each adapted to form an article and each arranged lengthwise of the strip, means for forming said blanks into articles, and means for thereafter ejecting said articles from the machine.

T. In a machine for making stamped 'articles. means for feeding a strip' of metal sidewise. means for `severing said strip of metal at a point in its said sidewise motion into a plurality of blanks each adapted to make an article. means for continuing the sidewise motion of said blanks, means'for subsequently forming said blanks into articles. and means for moving the formed articles in a direction substantially at right angles to the previous direction of travel of the strip and blanks.

8. In apparatus of the class described. means for feeding a strip sidewise. means for severing said strip into a pluralit)y of blanks each adapted to form a reenforcing girth. means for forming said blanks'into reenforcing girths. said feeding means being adapted to transfer said strip to the severing means and the blanks from the severing means to the forming means. and to position the blanks on the forming means. whereby the transfer to the severing means and from the severing means to the forming means is accomplished by the same feeding means.

9. In apparatus of the class described. means for feeding a metallic strip sidewise, comprising means for mo-ving said strip into operative relation with strip severing means. maintaining said strip in operative relation with strip severing means for a period suflieientito permit the severing thereof. the selfsame means subsequently transferringthe severed portions of said strip to article forming means and positioning the said severed portions in operative relation with the article forming means.

10. In a machine for forming reenfol'cing girths for metallic tension resisting box strappping. a die adapted to receive a plurality 11. ln a machine forforming reenforcing girths for metallic. -tension resist-ing box strapping, a die adapted to receive blanks for reenforcing gn'ths, means for feeding a succession of said girths, one behind another,

successive-ly, upon said die, and means for causing different portions of the die to receive the successive blanks, and forming means co-opera-ting with the die.

12. In a machine for forming stamped articles for metallic tension resisting box strapping, means for feeding a strip into the machine, means for severing the strip into blanks, a die, means for moving said blanks onto said die, means .for forming said blanks into articles, and means for ejecting said articles in al direction at right angles to the direction of the prior movement of the blanks in the machine.

13. In a machine for forming reenforcing girths for metallic tension-resisting .box strapping, means for feeding a strip into the machine, means for severing the strip into blanks, a die, means for moving the blanks onto said die, means for forming said blanks into reenforcing girths on said die, and mea-ns for subsequently moving said die and girths lengthwise.

14. In a machine for forming reenforcing girths for metallic tension resisting box strapping, means for feeding a strip into the machine, means for severing theI strip into blanks, a die, means for moving said blanks onto said die, means for forming said blanks into reenforcing girths, means for moving said die lengthwise of the girths after each forming operation, and means for stripping the formed girths from the die upon its return motion.

15. In a machine for forming reenforcing girths for metallic tension resisting box strapping, means for feeding a strip sidewise into the machine, means for severing the strip into blanks, means for forming said blanks into reenforcing girths, including a die longer than the length occupied by a single set of blanks, means for moving the dieiafter the formation of a set of blanks in a direction lengthwise of the blanks, whereby another section of the die is presented for the next section of the blanks.

16. In a machine for forming reenforcing girths for metallic tension resisting box strapping, means for feeding a strip sidewise into the machine, means-'for severing the strip into blanks, means for forming said blanks into reenforcing girths, including a die longer than the length occupied by a single set of blanks, means for moving the die after the formation of a set of blanks in a direction lengthwise `of the blanks, whereby another sectionof the die is presented for the next section of the blanks, and means for strip-ping the completed girths from the die` upon its return motion.

17. In apparatus of the class described, feeding means adapted to feed a girth blank sidewise into the machine, means for forming said girth blank into a reenforcing girth, said means including the die upon which the girth is formed, means for moving said die after the formation of the girth lengthwise of the girth to expose a new section of the die for the next operation, means for moving the die in the opposite direction after said next operation, and means for stripping the previously formed girth from the die upon said reverse movement thereof.

18. In apparatus of tlie class described, feeding means adapted to feed a strip side- Wise into the machine, severing means for severing said strip into a plurality of blanks, said feeding means being adapted to continue their operation after theoperation of the severing means and toplace the severed blanks adjacent a die and to thereafter return, means to strip the severed blanks fro-m the feeding means upon the return of the latter, including magnetic means to mainrelation upon the die.

19. In apparatus of the class described,A

means adapted to present a blank into position to be operated upon by forming means, and thereafter to return means for stripping the blank from said transferring means upon the return movement of the latter, including magnetic means to maintain the stripped blank in correct position upon the return of the transferring means.

20. In apparatusfcf the class described, forming means, means adapted to present a blank into position to be operated o-n by said forming means, andthereafter to return, means for stripping the blank from said presenting means on the return movement of the latter, and magnetic means to maintain the stripped blank in correct position upon the return of the presenting means, and means for subsequently projecting the formed reenforcing girth from the machine.

21. In a machine for making reenforcing girths, a. die, meansI for feeding a plurality of blanks, each adapted to make a reenforcing girth onto said die, means for simultaneously forming said blanks into reenforcing girths on said die, and means for subsequently moving said die and girths lengthl wise? ALBERT s. KUX.

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