US1589176A - Attachment for dieing-out machines - Google Patents

Description

Jue 15, 192s. 1,589,176

' W. I HUBBARD ATTACHMENT FOR DIEINGOUT MACHINES Filed June 24. 1924 4 Sheets-Sheet 1 @51% @gf/@fw atto: nu

June 15 1926.

w. HUBBARD ATTACHMENT FOR DIEING-OUT MACHINES Filed June 24, 1924 4 Sheets-Sheet 2 31a/vanto@ drm vm,

June 15, 192e. 1,589,176

W. HUBBARD ATTACHMENT FOR DIEING-OUT MACHINES Filed June 24, 1924 4 Sheets-Sheet 3 june 15 1926 l '1,589,176

W. HUBBARD ATTACHMENT FOR DIEING-OUT MACHINES Filed June 24. 1924 4 Sheets-Sheet 4 Cil Patented June 15, 1925.

nutren stares natuur ortica.

WILLIAM HUBBARD, 0F HERIESMER, NEVI YORK, ASSIGITOR TO VIILLIAM HUBBARD AND FREI) A. RAY, A PABTNERSHI?,

0F HERKIIVIER, NEW' YORK.

ATTACHMENT FOR DIEING-OUT MACHINES.

Application inea June afi, 1924. serial N6. 722,145.

This invention relates to improvements in dieing-out machines and is more particularly directed to an attachment for such machines providing an automatic stock feeding and blank cutting device'.

It is `an object of this invention to pro-` vide an attachment for dieing-out machines to automatically cut blanks from a roll ot material and including an improved means for feeding the stock to the cutters.

Another object of this invention is to provide an attachment for dieing-out machines to .automatically out blanks from a roll of material and including improved means for feedingl the stock to the cutters with ad -ditional means for adjusting the stroke of the feeding mechanism according to the size of the blanks being cut.

A further object of this invention consists in the provision of an attachment for sole cutting' machines including improved means for intermittently feeding the stock to the cutters and means to automatically elevate the end of the stock above the cutters before the beginning ot each feeding stroke.

Still another object ot' this invention consists in the provision ot' an improved attachment for dieing-out machines includ ing means for intermittently feeding the stock, together with guides for the sides and top of the stock, and improved means for sup} )orting the stock rolls.

A still further object of this invention consists in the provision of an improvel double die for use in cutting blanks from sheet material cn a dieing-out machine and having means for severing the waste to prevent clogging.

These and 'further objects will be more apparent from the following description taken in conjunction with the attached drawings, wherein Figure l is a front elevation of a dieing-out machine showing the improvement according` to this invention in place;

Figure 2 is a longitudinal vertical tion on line 2, 2, ot Figure l;

Figure 3 is a perspective View on an enlarged scale, certainparts being cut away to more clearly illustrate the die. theI feed 'table and the guide means; I

' ligure 1.1. is a partial side elevai..

secs

j. en. an

involves cutting` 6, 6 of Figure 4 illustrating the means of Y mounting the feed block;

Figure ,7 is a transverse section through the die and die bed; and

Figure 8 isa partial' vertical section on line 8, 8 of Figure 2.

It has been the custom in the cutting of blanks from materials such as felt for sole fillers, soles, heel seat fillers, uppers, etc., in the sho-e manufacturing business to use a machine commonly known as a gear or gearless sole cutting` machine and also known in the trade .as a beam dinker or dieing-out machine. Such a machine usually includes a die' bed support and a vertically reciprocating cutting plate or beam operated by the tripping of a clutch by pressure of the operators toot upon a treadle. `This method of cutting blanks involved the manual placing of the die upon the stock in various positions in order to economize in material. after which the clutch was tripped to torce the die through the stock. This operation has always been considered very dangerous, and owing to the'danger of mutilated hands has resulted in great ditiiculty in iinding operators to work on these machines. Furthermore, this hand method of cutting blanks from a large sheet of stock the stock into squares r rectangles from a large roll, resulting` in considerable wastage at the edge of each rectangle.

This invention makes use o'l' the same type ot machine adding as an attachment means for fastening the die to the die bed and automatic means for intern'iittently feeding the stock from a continuous roll just the right distance after each stroke of the cutting plate to supply suticient material for the blank or blanks to be cut at the next stroke. This involves only a wastage at one end of a large roll usually of about one hundred feet and results in a great saving et f'naterial, whil at the same time eli""iinat nig any necessiti et manual operationv et Cil 42 upon the dies. These knives extend well Vbeyond the edges of the stock and have their upper cutting edges in the same plane as the equivalent in length to the distance the stock is fed for each cutting operation.

Directly above the dies the plunger head 14 supports the cutting plate 14, a cushion member i4 being interposed between these two parts. AThe lowermost position of the cutting plate at the end of the stroke is adjustable by mechanism on the machine (not shown) in order that .it may just contact with the cut-ting edges of the die to sever the blank from the stock.

r)The stock is fed to the Vdies over a horizontal feed table 43 suitably mounted 'on and connected to a. pair of brackets 44 bolted as.

at 45 to the vertical edges of the side plates 27 on the side opposite from the feed trough 38.

For the purpose of supporting a roll of stock there is provided at the remote end of the feed table 43 a pair of brackets 46 bolted to the feed table and having vertically eX- tending arms 47 provided with channels 46, on their facing sides, and with holes 49 forming journals for the shaft 5() of a small roller 51 arranged just beyond the end of the feed table 43 and having its upper surface very slightly above the plane of the top of the feed table.

The roll of stock is adapted to be mounted upon a rod 52 of a length to engage within the channels 48 so that it may be said to float therein with the weight of the roll of material supported upon the freely rotatable roller 51 so that the stock may be fed from underneath the main roll passing over the roller 51 and resting lupon the surface ofthe feed table 4.3.

The plane of the top of the feed table 43 is slightly elevated above the plane of the cutting edges of the dies in order that the material may be fed forward over the dies without being hindered in its forward movenient by catching upon the edges of the dies. In order that the material may be pressed down against the dies by the cutting plate at the time of cutting, there is provided on the forward end of fthe feed table the movable flap or hingedfportiou 53 having its upper surface forming an extension of the upper surface of the feed table, pivoted thereto about the rod 54 passing through the lugs 55 extending from the sides of the feed table and through the reinforcing ribs 56 on the bottom of the flap. In order to maintain the flap in its proper normal position, it is provided with the arm 57', pivoted to one of the ribs 56, projecting `downwardly therefrom and provided at its lower end l'with the rod 57 surrounded by a coil spring 58. The rod 57 passes throughv and above' the dies,

the spring abuts against one arm of the L-shaped bracket 59 bolted to' one of the side frames 10. The rod 57 is provided with the lock nuts 60 beneath the bracket 59 to limit the amount that the spring 58 will elevate the forward edge of the flap above the top of the feed table. .It will be seen that this arrangement will serve to maintain the upper surface of the flap in any desired angular relation with the upper surface of the feed table but will allow itv to bedepressed upon the application of pressure upon its surface.r

This hinged flap serves two purposes. In

the first place it supports the stock almost to the cutting edge of the dies and holds the edge above the level thereof as previously explained in order to prevent catoliingof the edge of the stock against the dies during the feeding movement thereof. Upon the downward movement of the plunger head to bring the cutting plate in engagement with the cutting edges of the dies to sever the blanks from the main sheet of the stock the inner edge of the cutting plate first engages the stock resting on top of the hinged flap and forces the flap down until the stock rests upon the cutting edges of the dies. Further downward movement of the cutting plate severs the blanks from the sheet of stock and allows them to drop through into the trough 38. Immediately upon the upward movement of head, pressure on the hinged flap is released and it returns to its normal position elevating the forward edge of the stock from the position it has been pressed into by the cutting action of the cutting plate, thus preparing it to be again fed forward ready for the next out.

This machine is adapted for use with various widths of stock depending upon the extreme length of the dies used, and in order to maintain the material exactly central of the dies, in spite of the fact that the roll has some freedom of longitudinal movement upon its supporting rod, the feed table is provided with a pair of adjustable side guides 61 extending longitudinally of the feed table and supported from a pair of transverse bridge bars 62 arranged parallel to and above the surface of the feed table 43 and supported by means of the integral depending anges 63 bolted to thesides of thefeed table.` These bridge bars are provided with longitudinal slots 64 adapted to slidably receive therethrough the Shanks of thumb screws 65 which are threaded into the guide members 61. Interposed between the heads of the thumb screws 65 and the top surfaces of the bridge bars 62 are the washers 66. lt will be clear that upon looseningV the pair of thumb screws conneeted to either one of the guides G1 it mav be adjusted transversely of the'feed table the plunger' n 43 and locked in the desired position by the tightening ot the thumb screws rigidly clamping' it against the under surface ot the bridge bars. Riveted to the under surface ot' the bridge bars 52 between the guides is the thin metal sheet 67 having an upturned end 68 facing' in the direction ot the roll of stock. riiis'plate is parallel to and spaced above the top et the iced table 41? a distance substantially equivalent to the thickness ot the stock bei ted and `forms in eiect a stock-feed cover plate since it is located directly above the feeding' device, which will be later described. lt extends substantially from the rear or the guide members 61 to the joint between the reed table and the hinged itlap and is ot a width slightly less than the narrowest stock that will be used upon the machine. It will be clear that the stock being-fed from the roll rests upon the surface ot the feed table i-3 beneath the surface oi the stock-feed cover plate G7 and between the inner edges ot the guides 61, thus being' restrained against movement in any direc-tion except longitudinally ot the feed table.

Vl`he stockfrom the roll must be ted to and above the dies and this iiecdingj action must be intermittent and in s fnehronism with the motion ot the plunger head, means being provided to retain the stock stationary during" the actual cutting operation and for sufficient time thereafter to allow the hinged flap 53 to raise the `forward edge of the stock above the cutting,- edges ot the die. For this purpose the stock is fed toward the die by means ot a reciprocating` block, the period ot rest for the stock occurringT upon the return movement of' this feed block. As best` shown in Figures 2, sand (i the feed block (i9 con'iprises a block olf metal having;` a fiat up )er surface 70 and longitudinally extending; side tlanges 71. The block is adapted to reciprocate in ay longitudinal opening` 72 providedvin the leed table so that its upper surface 70 is 'flush with the top ol' the feed table, the 'flanges T1 lbeing` guided between the lower surlace oli the feed table and a pair ot' L-shaped ways bolted to the under surface o't' the Vteed table.

lfhe feed block is adapted to be reciprocated through linkage connected to the main drive shalt 22 ol' the dieingpout machine and tor this purpose the shaft is provide-d with a centrally located eccentric .731 having tltted thereto an eccentric strap and rod 75. To one ot the cross members 12 oit the machine trame is bolted the vertical bracket 76 which provides tulcrum points tor two bell crank levers 77 and 78 respectively. The eccentric rod is pivoted to the lower vertical arm 79 of the bell crank lever 77 and the other or horizontal arm 8O of this bell crank lever is connected by a link 81 to the horizontal arm 82 ofl the bell crank lever 78 whose upper vertical arm 83 is connected by means oiv theparallel links Se one on either side thereo't to the 'l'eed block. The arm 82 ot the bell crank lever 78 is provided with a series ot longitudinally7 spaced holes and the end of the link 81 connected thereto is biurcated and provided with a pin 85 passing through the arms thereot' and adjustable into any one o't the holes in the arm S2, in order to vary the eiiective length ot the lever arm.

The lowerend ot the link 81 is pivoted by means of a bolt 86 to an adjustable block 87 slidably mounted between the ways 88 of the arm 8'() olf the bell crank lever 77. The block 87 is provided with an L-shaped member 89 adapted to slide along,` one tace and the top ot the arm SO and secured to the block 8T by the bolt 86. This l.-shaped member has threaded aperture parallel to its direction ot' sliding within the ways and through this threaded aperture is passed a threaded rod 90 having a hand wheel 91 on one end thereof. The hub of this hand wheel isprovided with a groove, journaled in a plate 92 fastened to the end ot' the bell crank lever. rlhe bolt 86 is enlarged at 86 forminga bearing for the link 81 and a shoulder abutting the block 8'?. lt will be seen that rotation of the hand wheel Q1 will cause a. longitudinal adjustment ot the pivot point of the lin-k S1 in respect to the 'tulcrum of the bell crank lever 77, and this adjustment may be locked by'tightening the nut 8G on the bolt SG, thus clamping the arm SO between the blocks 87' and 8S). This mechanism provides means tor varying the length ot the arm of the bell crank lever 7T to adjust the distance of movement of the feed block GS).

'llhe parallel links Sl are adapted to reciprocate the feed block and also to project and retract the feeding pins 93 which are mounted in the holder plate 9st and project into the holes or throats 95 passing clear through the 'leed block at an angle ot substantially le@ trom the vertical in such a manner that the pins slope toward the dies. The feeding pin holder plate 9a is mounted on a backing plate 9Gk having;` depending therefrom at either end the lugs or flanges 27. The feed plate is providedV near its rear end with a pair of depending lugs 98 drilled to receive a transverse arbor 99 upon unich is pivoted the bell crank member or rock arm 100 which forms a connecting` member between the feed plate and the parallel links and a supporting,Y means for the feed pin backing` plate.

This rock arm is substantially L-shaped in elevation and has at the intersection of the two arms an enlargement forming a journal adapted for rotation about the arbor 99. The end of the shorter arm is transversely drilled to receive the arbor 101 which pivots lll) the parallel links 84 to the rock arm. The 'exe treme end of the longer arm is drilled transversely to receive the arbor 102 which passes through the lugs 97 of the feed pin backing plate and serves to pivotally connect that member to the rock arm. 1n addition the rock arm is provided with thetwo parallel extending lugs or stop members 103 and 104 which are adapted to alternately engage with the under surface of the feed plate and limit the amount of movement. of the rock arm about its arbor 99. The three arbors 99 101 and 102 are lubricated by means of a grease cup 105 through the grease channels 106.

In operation the feed block obtains its movement from the eccentric 74 mounted on the main drive shaft 22 which rotates con tinuously. The eccentric 74 and the eccentric; rod 75 change the rotary motion into `long {itudinal motion, and thus the horizontal arm of the bell crank'lever 77 reciprocates in a vertical plane transmitting such motion to the link 81 and through that link to the arm 82 of the bell crank lever 78 which changes the motion from up and down to longitudinally of the feed table and the links 84 then transmit this longi- .tudinal reciprocating motion to the feed block. rilhe length of the stroke of the feed block, as will be noted, is readily adjustable by means of the screw 90 and the adjustable pin connection at opposite'ends of the link 81. Assuming the feed block to be in a position most remote from the die; aforward pull upon the links 84 will cause naturally a forward movement of the feed block. at thegsame time rotating the` rock arm 100 about its arbor 99 until stopped by the lug 104 and projecting the feed pins 93 through the throats until their pointed ends project a substantial distance above the surface of the feed block as shown in Figure 4. The stock feed cover plate prevents any upward movement of the stock and hence the pins are projected into the bottom thereof and carry the stock forward with them.

pon reaching` its closest position to the die, the motion of the feed block is arrested as the `motion of the direction of the links 84 is reversed and the rock arm 100 is then rotated in the opposite direction until the stop 103 engages the-undersurface of the feed block, thus withdrawing the tips of the `pins within the throats `and releasing` the stock So that the feed block can move to its rearwardposition where the pins can again engage` the stock to move it forward.

`In order to insure that the feeding pins will be projected into the material which is to be fed forward before any motion of the `feed block takes place and that they be released before the return movement of the feed block begins to thus insure the exact amount of material being fed forward at each stroke, one Hangs 71 of the feed block that the feed pins may above the treadle 69 is provided with a friction gib. 107 constrained to move therewith by the guide pins 109 and spring pressed against'the vertical wall of the guide 73 by means of the coilv springs 108 set in holes in thefeed block. rllhe effect of this friction gib is to retard the movement of the feed block upon the reversal of links 84 at either end of the stroke in order be projected above the surface of the feed block upon the initial forward movement of the links after which, when the stop 104 engages the under-surface of the feed block the feed block itself will start forward. The same procedure in the reverse direction is effected upon the return movement of the block withdrawing `the feed pins from the stock before moving the block in the rearward direction. Oil holes 110 are provided in the surface' of the feed table to,.provide adequate lubrication for the ways in which the feed block travels.

In order that the machine may operate continuously without the operator keepinghis foot upon the treadle 25 there is provided a lever 111 pivoted at112 to one of the cross members of the frame of the machine and provided at the upper end with a handle 113'. constrained to move inward by means of a sprinjg` 114 and is so positioned as to rest against the end of the treadle 25 when the treadle is in its normal position as shown in Figure l. Just below the treadle, the lever widens out on a taper as shown at 115 and again narrows down as at 116 to provide the horizontal shoulder 117. The lower end of the lever is provided with a horizontal member 118. It will be seen that upon downward pressure of the treadle the end thereof will slide Valong` the inclined surface of the widened portion of the lever direction of movement of the The lower end of the lever is pushing it to the left against the spring 114 until the upper surface ofthe treadle comes below the shoulder 117 when the spring will push the lever to the rifrht and engage the shoulder 117 above the surface of the treadle and thus retain it in its lowermost position to hold the clutch engaged so that a continuous drive of the machine is effectled. lIn order to stop the machine, it is onlv necessary'to move the handle 113 to the right or kick the horizontal member 118 to the left to release the shoulder' 117Y from and allow it to move upward under the action of its spring 26.

vFrom the above description it will be evi` dent that this invention provides a machine for cutting blanks from a roll of material in. an entirely automatic manner requiring' only the services of the operator to initially set the dies in position and adjust the length of the feed stroke to that requirediby the size of the die, after which attention need only be given to keeping` the macnme supplied with rolls of stock and to carryaway the finished blanks. llVith the old type of machine, as described in the first part of this specification, an operator working a day of nine hours could cut from two thousand to fortyfive hundred pairs of soles or other blanks. n order to produce the maximum number of blanks the operator would have to work so rapidly that the he could not carefully place the die, thus wasting a considerable amount of material.. A, device of this invention will cut from 1:20 to 1S() pairs of blanks in a minute. Assumi' g an average speed of lll() strokes per minute, it will cut 8400 pairs perA hour or approximately 35,- GOO in a day. By using the material in rolls of one hundred feet or more, it is obvious that there is a wastage kbut once in this length at the final end of er "h roll.

This machine has been ill` Itraded in connection with dies for cutting soles, but it is to be understood that it is not limited to this particular use but may serve to cut blanks of any desired shape or size up to the capacity', of the macnine from any sort of material which-can be-cut vfn the. die.

lfilhile but one embodiment oi this invention has been illustrated and described itis to be Vunderstood that the invention only lto be limited'by the scope of the. attached claims.

Having thus described my invention what l claim as new and desire to secure by Letters Patent is:v

1 n an attachment for dieing-out machines having a stationary` die-bed support and reciprocating cutting plate in combination a die mounted on said support below said cutting plate, a feed table above the level of the cutting edge of said die, a depressible extension on said table beneath said cutting plate, a support `for a roll of stock at one end of said table, reciprocating 'ieans below said table, feeding pins thereon and means to alternately project said pins above and retract them below said table.

2. In an attachment for dieing-out machines having a stationary dic-bed support and reciprocating cutting` plate in combination a die mounted on said support below said cutting plate, a feed table beside said die and above the cutting edge thereof, a hinged extension on said feed table adjacent said die adapted to be engaged and depressed by said'cutting plate and means to normally maintain said extension in position to support the stock above said die.

3. In an attachment 4for dieing-out machines having a stationary die-bed support and reciprocating cutting plate in combination, a die mounted on said support having its cutting edges uppermost and adapted to cooperate with said cutting plate in cutting blanks, a stock supportingy device, a feed table between said stock support and said die, intermittent feed mechanism below the level of said feed table and means partially in the path of said cutting plate to automatically raise said stock above the level of the cutting edges of said die after each stroke of the cutting plate and before 'the forward movement of the feed mechanism.

d. ln an attachment for dieing-out machines having a die-bed support and reciprocating cutting plate in combinrwron, a die mounted on said support below said cutting plate, a horizontal Afeed table above and beside the cutting edges said die, means supported by said table remote from said die to support a roll of stoel', a feed block slidablj; mounted in said f ,fl table` and means to reciprocate said block synchronously with said cutting plate.

5. ina stock feeding attachment for dieing-out machines, in combination a horizontal feed table, means at one end thereof to support a roll of sheet material, means spaced above said table to retain said sheet thereon, a feed block slidably mounted in said table and having its surface fiush with the top thereof, means to reciprocate said block, pins extending through said block and means to project said pins above the surface of said block and into said stock before and during the forward moven'ient of said feed block.

(3. ln a stock feeding attachment for dieing-out machines, in combination a horizontal feed talle, means at one end thereof to support a roll of sheet material, means spaced above said table to retain said sheet thereon, a feed block slidably mounted in said table and having its surface flush with the top thereof, a bell crank pivotally connected to said feed block, feed pins connected to one arm of said bell crank and extending into holes passing through said feed block, reciprocating drive means connected to the other arm of said bell crank adapted to project said pins above the surface of said feed block before and during the forward movement thereof and to retract them within said block before and during the rearward -movement thereof to intermittently feed said stock.

7. In a stock feeding attachment for dieing-out machines, in combination a horizontal feed table, means at one end thereof to support a roll of sheet material, means spaced above said 'table to retain said sheet thereon, a feed block slidably mounted in said table and having its surface flush with the top thereof, friction means to resist the sliding of said block, a bell crank pivotally connected below and to said block on an axis transverse to the direction of movement of said block, feed pins mounted on one arm of said bell crank and Aadapted vto be projected through .said feed block to at times engage said stock, drive means connected to the other arm of said bell crank and means to adjust the stroke of said feed block.

8. In an attachment for dieing-out machines having a'die-bed Support7 a reciprocating cutting plate and a drive shaft, in combination, a die mounted on said support beneath said cutting plate, a feed table beside and above the cutting edge of said die, a feed block mounted for reciprocation in and longitudinally of said feed table, a stock roll mounted on said table remote from said die, a bell crank lever pivoted to said machine and having one arm thereof associated with said feed block, a second bell crank lever, an eccentric on said drive shaft, an eccentric rod connecting said eccentric to one arm of .said second bell crank lever, a link connecting the remaining arms of said bell crank levers and means to adjust the distance of one end of said link from the fulcrum of the corresponding bell crank lever.

9. In an attachment for dieing-out machines having a die-bed support, in combination a die having a cutting edge, mounted on said support, a. feed table beside .said die and having its surface ina plane beyond the cutting edges of said die, a hinged extension on said table adjacent said die, means lo normally maintain said extension in the .same plane as said table, means on the opposite end of said table to support a roll of stock to be cut, side guides on said table to guide said stock over said die and intern'littent feeding mechanism associated' withsaid table.

l0. In an attachment for dieing-out machines having a die-bed support, in combination a die having a cutting edge, mounted on said support, a feed table beside said die and having its surface in a plane beyond the cutting edges of said die, a hinged extension on said table adjacent said die, means to.

normally maintain said extension in the same plane as said table, means on the opposite end of said table to support a roll of stock tobe out, adjustable side guides on said table to guide said stock over said die and adjustable, intermittent, feeding mechanism associated With said table.

1l. In a stock feeding attachment for dieing-out machines, in combination a. feed table, a die adjacent one end thereof, a stock roll supporting means at the opposite end thereof including a pair of vertically grooved guides, a rod slidably mounted in said guides and adapted to be passed through the center of the roll of stock, a roller pivotally mounted in said guides below and parallel to said rod to .support said stock roll, the upper surface of said roller being substantially in the same plane as the Work surface of said feed table.

l2. In an attachment for dieing-out machines having a die-bed support and reciprocating cutting plate in combination, a die mounted on said support having its cutting edges uppermost and adapted to cooperate with said cutting plate in cutting blanks, a stock supporting device, a. feed table between said stock support and said die positioned above the cutting edge of said die, intermittent feed mechanism below the level of said feed table, means to automatically raise said stock above the level of the cutting edges of said die after each stroke of the kcutting plate and before the forward movement of the feed mechanism and means to prevent clogging of the die by Waste material.

vIn testimony whereof I hereunto affix my signature.

WILLIAM HUBBARD. i

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