US361286A - hodgson - Google Patents

Description

3 sheets-sheet. i.

(No Model.)

J. G. HODGSON.

' GANG DIE PRESS. m3361286. Patented Apr. 19, 1887.

Ina/enfor- (No Moae1. j

J. G. 'HODGSON GANGDIE PRESS.

3 Sheets-Sheet 3.

'no docs not happen to be ofthe exact proper size 3 5 guide pin or stop, the sheet will always prop- UNITED STATES PATENT OFFICE.

-JOHN G. HODGSON, OF CHICAGO, ILLINOIS, SSIGNOR TO EDWIN NORTON AND OLIVER NV. NORTON, OI SAME PLACE.

GANG DlEPRESS.

SPECIFICATION forming part of I .etters Patent No.361,286, dated April 19,1887.

Application filed December 13, 18H6. Serial No. 221,356. (No modi-l.) I

.To-all whom it may concern.-

Be it known that I,JoHN G. lIoDGsoN, a citizen of the United States, residing in Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvementin Gang Die-Presses, of which thefollowing is a specification.

My invention relates to improvements in gang die-presses for cutting out sheet-metal 1o can-heads or other blanks, and more particularly to improvements uponthegangdie-press shown and described in Letters Patent No. 304,352, granted September 2, 1884.

In this invention the dies are arranged alx 5 ternately, so as to cutout at each stroke of the press only the alternate heads or blanks from the sheet, as is shown and described in the patent above referred to. In operating such alternately-arranged gangdics, if the sheet when it is reversed to eut out the second half or series of blanks therefrom and its opposite end or edge pressed against the gages or stops,

the blank spaces will not always properly reg- ;5 ister with the dies, andwhere the sheet is just of sutiicient size to cut'a certain number of heads or blanks, as 'is frequently the case, a

- very slight inisadjustment will occasion imperfect heads. To remedy this, in the present 3o invention I provide the press with a registering-punch, which cuts out a registering-notch in the edg'e ofthe sheet,- so that when the sheet is reversed or turned end for end or upside down, and this registering-notch .placed against the er] y register with the gang of dies. In operating such agang of dies it is also important that the whole sheet should always be spread out perfectly flat and smooth before the dies Strike 4c the same; and to effect this result I provide the movable head of the press with a plate having holes or perforations in which the male dies fit and through which they can project. This plate comes down and strikes the sheet in advance of the dies, and thus smooths and liattens ont the sheet before the male dies strike it. This smoothing-plate reciprocates upon the male dies. It also serves as a stripper to remove or strip the sheet from the male dies 5o when the head of the press'is raised. To cause this sheet smoothing plate to operate also as a stripper, stationary pins are secured to a fixed bar attached to the frame of the machine. These ejector-pins project through suitable holes in the movable head of the press and strike against the stripper-plate as the cross-head is raised. In order to eject the head or blank eut from the sheet from or out of the male die, eiecting-pins are provided,

which project through and are mounted upon 6c the die itself. These eiecting-pins strike against a cross-bar mounted in a slot in the die-head and connected by suitable guide pins with the bottom stripper-plate.

The invention also consists in the novel de- 65 vices and novel combinations of devices herein shown and described, and more particularly pointed out in the claims.

In the accompanying drawings, which form a part of this specification, and in which simi- 7o lar letters of reference indicate like parts, Figure 1 is a front view of a device embodying my invention and showing that part of the press to which my invention relates. Fig. 2 is a plan view showing the bed-.plate or lower die-head, looking down from line22 of Fig.- l. Fig. 3 is a plan viewlooking down from line 3 3 of Fig. 1. Figs. 4 and 5 areviews showing the gages or stops for registering the sheet in the gang of dies. Fig. 4 shows the sheet after 8o one-half of the heads or blanks have been cut ont, and Fig. 5 the same after the remainder are'cut out. Fig. 6 is an enlarged cross-section on lined Got' Fig. l. v

In the drawings, A represents the frame of the-machine or a part thereof.

A is the cross-head, and Ai the guides for the cross-,head on the frame.

B C are male and .female dies alternately arranged, as illustrated in Fig. 2, and as also 9o indicated in Fig. 4f.

B is the movable die head or plate attached to the cross-head, and in or upon which the dies B are secured, and C' is the bed-plate, in

or upon which the female dies are secured.

The die-head B is furnished with a rigidlyattached socket-pl ate, b, having holes or sockets b', to receive the end of the dies B. The dies B are secured to the die-head B by means of screws bi, the heads of which fit in eounterloo sunk holes in the upper surface of the dieplate. The socket-plate b and screws b2 afford ble manner,

a secure and easy means of ixing the dies in the die head or plate B. The die head or plate B is secured to a plate, B, which is attached rigidly to the cross-head A.

D is a smoother or stripper plate fitted upon the male dies B, and adapted to reciprocate thereon below the socket-plate b of the diehead. -This plate D has holes d, in which the male dies B fit, and through which they may project.

E is a stop-bar attached to the frame of the i machine, and provided with adjustable eject-4 ing-pins E E', which project through suitable holes in the die-head B and the plate B2. The pins E E' are ad justably Iixed to the stationary bar E by means of serewfthreads and nuts e e. When the eross-head of the press is raised or makes its backward stroke, the fixed pins E E will strike against the movable stripper' plate D, and thus arrest its upward movement with the movable gang of dies B,and thereby strip the sheet X from the same, and at the same time withdraw the dies B within the holes in the plate D, so that said plate will project in advance of the dies or their cuttngedges at their next downward stroke. The plate D will thus strike the sheet X in advance of the gang of male dies B and exert a light pressure against the same, so as to perfectly smooth and flatten it out before the male dies strike it.

The head or blank, .if/,cut from the sheet is automatically ejected from the male die, as the crosshead makes its upward or reverse movement, by means of one or more ejecting-pins, mounted in suitable holes, f', inthe die B itself, which ejeeting-pins strike against a movable cross bar or stop, F, mounted in a suitable slot or recess, F', in the die-head plate B. This stop-bar F isrigidly connected by suitable pins, f 2, with the stripper-plate D, so that when the upward movement of the plate D is arrested by the stop-pins E E' the upward movement of the stop-bar F will be likewise arrested, and the pins f j thus caused to eject or strip the head or blank x fromthe die. The connecting pins or links f", which connect the bar F with the plate D, may preferably project through suitable holes, f3, in the head-plate B and its diesocket plate b. The stop or bar F may, however, be connected with the stripper-plate D in any other suitaif desired. Each die B is preferably provided with two ejecting-pins, ff, and a single movable stop, F, will of course answer for both ejecting-pins, the stop in such ease being preferably in the form of a bar extending over both ejecting-pins, as shown.

In the gang die shown in the drawings, Figs. 2, 3, 4, it will be` observed that two pairs of the six dies shown come directly opposite each other in the die-head, and 1 therefore, for sake of convenience, employ a single stop-bar, F, for the four ejecting-pinsf of each such pair of dies B B. This is clearly shown in Fig. 3. The gang dies illustrated in the drawings are of such size as to cut out of the ordinary tinplate sheet twelve can-heads-six at cach operation-the heads being for three-pound cans. The sheet, as shown, is a little larger, both in width and length, than is required for making twelve three-poundean heads. The dies are, however, arranged preferably about as shown in the drawings, so that equal intermediate spaces may he left, and thus all utilized for cutting out cancaps, as indicated by the in Fig. 5.

In a gang dieprcss for cutting the sheet into smaller or larger sized heads, ofcourse it will be understood that a greater or less number oi' dies will be employed in the gang, according to the size of the heads. Where, for example, the sheet is cut into twenty-four heads, there will be twelve instead of six of the alternatelyarranged dies, and three instead of'two of the dies will come in the same straight line or op posite cach other, and in suchl case a single st0p-bar, F, may preferably be employedv to operate the ejeeting-pins f f ol such three dies. The ejecting-pins f f are secured to or lit against the usual movable ring portion, b, ofthe die B.

As shown in the drawings, the dies B C are furnished with the usual supplemental dies, c c', for cutting out a stud-hole in the head w, and for simultaneously stamping or shaping said head, as desired, and also for cutting ont a cap, m'. The dies B C are further furnished 'with diese2 c, for pricking avent-hole in the cap av', and with springactuated ejeeting-pins h i h2. The ejecting-pins h t against a ring portion, et, of the die C, and are actuated by a rubber spring or cushion, h3. The central port-ion, c, of the die c is mounted upon a spring, h, and serves to eject the cap x from the die c.

K and K are the male and female dies secured to the head-plate B' and bedplate C',

lrespectively, for cutting the registering notch or recess e in one edge of the sheet, and k k k are the registering or guide pins for the edges of the sheet. 'lhese guide pins are fixed to the bedplate C.

As illustrated in Figs. 2, 4, and 5, the dies cut a registcringnotch, e, in the opposite edge of the sheet Xjust the same distance as the stop lc from the marginal die or dies B C, so that when the sheet is reversed and the registering-notch o pressed against the guidepin k the sheet will properly register with the gang of dies, and the second half of the heads thus be cut out in straight lines with the first halt', as is shown in Fig. 5. As illustrated in the drawings, the sheet is turned end for end and upside down for cutting out the second half ot' the heads,`so that the saine side edge, v', of the sheet comes against the guides k lc. If the sheet should be reversed by turning end for end, keeping the-same face up, the opposite side edge, e, would come against the stops or guides k k', and in such case similar dies, K K', should be provided for cutting like registering-notches in the edge v2 of the sheet. I, however, consider it preferable to reverse the sheet in the manner first described, and thus lines y vC at the other end.

351,286 l l s keep the same edge of the sheet against the pins k']c. The inner edge of the'dies K K', it will beobservcd, are i ust the same distance from a transverse line through the center of the die C at the one end as tile guide-pin k is from a likeline -through the center of the die rlhis is indicated by the dotted lines in Fig. 2.

The means shown and described for automatically ejecting the 'head or blank a: from the die B may of course be also used in a single diefpress as well as in a gang press.

It will be understood that the dies K K', instead of merely cutting a narrow registering notch or recess, ,might be made to cut a wide notch or recess, or to square the entire edge of the sheet. A registering-notch wide enough to admit the gageor pink is, however, all that is required.

While in the device illustrated in the drawings theplate D serves two or more functionsviz., to smooth and flatten out the sheet, and also as a stripper for removing the sheet from the dies and as the meansof communicating motion to the stop-bars F-and while the more improved form of my invention consists in this plate arranged and combined so as to perform these several functions, I desire it to be distinctly understood that my invention in its broader features is not confined to a plate, D, having such duplicate functions.

In its function asa smoother-plate to smooth and iiatten out the sheet in advance of the male dies the plate D- (eo-operates` with the opposing surface of the series or gang of fel male dies, the upper or cutting faces of all of which are of course arranged in the'same plane, and together constitute a single plane surface, between which and the. smoother-plate the sheet is pressed and flattened out into a true plane, and all curves orverinkles removed be forey the gang of male dies strikes it. By means of the smoother-plate I am thus enabled to do as perfect work with a gang of dies operating simultaneously as can be done with a single die. I am of course aware that heretofore a singe die has been made to operate inside of another hollow die while thc latter holds or presses the blank.

The bedplate C is vfurnished with a socketplate, C", having holes or sockets C for the female dies C. The die holes or sockets in the plate b and C2 exactly match each other, and these matching plates,in which the dies fit, thus afford a ready means for at once causing each and all the male and female diesot' the gang to exact-l y and accurately register with each other. The die holes or sockets in the match-plates b and C extend entirely through one of the plates, atnd preferably entirely through both plates, to enable the plates to be clamped` together and the die-holes bored or drilled in both plates at the same time, to insure the several die-holes in the opposing plates being exactly concentric with and op# posite,to eachother. The two matclrplates being each thus provided with die-sockets cxactly opposite eachother, the male and female dies fixed in such match-plates' may all be. readily adjusted to register with each other. The movable ring portion'b of the male die is kept in place by means of a ledge or shoulder thereon, which strikes against asimilar ledge or shoulder on the central part, c', of the die. j

The holes d in the smoother-plate D should loosely tit the punches or male dies B B, so

that the full weight of said plate `will press against the sheet X as the cross-head of the press descends and before the dies B strike the sheet.

I claim- 1. In a gang die-press having alternatelyarranged male and female dies, the combination, with a guide pin or gage for one edge of the sheet, of a pair of dies, as K K, for forming acorresponding registering notch or 'recess'in the opposite edge of the sheet for adjusting the sheet into position under the gang of dies for the second st'r9ke,substan .,tially as specified.

2. In a gang diepress having alternatelyarranged male and female dies, the combination, with a guide pin or gage for one edge of the sheet, of a pair of dies, as K K', for forming a corresponding registering notch or recess in the opposite edge of the sheet for adj ustmg the sheet into position under the gang of dies for the second stroke, and gage or guide pins k k for the side edge of the sheet, subst-antially as specified.

3.' In a gang die press, the combination, with a gang of male dies and a gang of female dies, of a sheet-flattener or smoother-plate reciprocating upon said male dies and adapted to strike 'the sheet in advance of the dies, and thus smooth and flatten it out, said female dies having their cutting-edges all in the same plane and operating in conjunction with the said flattener-plate, substantially as specified.

4. In a gang diepress, the combination, with male dies B, secured to a movable head, B', of female dies C, secured to bed-plate C', and a sheet-smoother or flattenerplate, D, having holes d, through which said dies B may project, said plate being mounted to reciprocate upon said dies and adapted to strike the sheet iu advance of the dies, said female dies having their cutting-edges all in the same plane and operating in conjunction with the said tiattencr-plate, substantially as specified.

Y 5. In a gang die-press, the combination, with male dies B and female dies C, of stripper-plate D, reciprocating on said dies B, a

Ico

IXO

said stri pper-plate as the cross-head is raised, i

stop-bars F, connected to said stripper-plate D, ejectingpins f, and the movable stripper rings or portions of the dies, against which said ejectingpins f strike, substantially as specified.

7. The combination, with dies B and C, of head B', having slot; or recess F', stop-har F, and ejecting-pinsff, plate D, and connecting pins or linksf 1, substantial] y as specified.

8. The combination, with dies B and C, of head B', having stop or recess F', stop-bar F, and ejcctingpinsff, plate D, connecting pins or linksfi, and stop-bar E and pins E'E, substantially as specified.

9. The combination, with a gang of dies, B, and afgang of dies, C, bed-plate C', headplate B', having slots or recesses F', extending over'or across two of said dies B, ejectingpins f f for each of said dies B, movable stopbars F, mounted in said slots or recesses b, and the movable stripper rings or portions of the dies, against which said ejectingpins f strike, substantially as specified.

10. The combination, in a gang die-press, of a head-plate furnished with a match-plate having sockets foiI the male dies with a bedplate furnished with a match plate having sockets for thc female dies, the sockets in said match-plates being concentric with each other and extending entirely th rough the same, the ends of the dies {it-ting against said head-plate and hcdplate, substantially as specified.

JOHN G. HODGSON.

\Vii nesscs:

EDMUND ADcocK, H. M. MUNDAY.

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