US1344435A

US1344435A - Punching-machine

Info

Publication number: US1344435A
Application number: US260169A
Authority: US
Inventors: Victor R Bottone
Original assignee: PHILADELPHIA STORAGE BATTERY
Current assignee: PHILADELPHIA STORAGE BATTERY; PHILADELPHIA STORAGE BATTERY Co
Priority date: 1918-10-29
Filing date: 1918-10-29
Publication date: 1920-06-22
Anticipated expiration: 1937-06-22

Description

V. R. BOTTONE.

PUNCHING MACHINE.

APPLICATION FILED OCT. 2 9. 1918.

Patented June 22, 1920.

3 SHEETS-SHEET l.

V. R. BOTTONE.

PUNCHING MACHINE.

, I APPLICATION FILED OCT. 29, 1918. I I

.1 44,435. Patented June 22, 1920.

' 3 SHEETS-SHEET Z.

w l) a g :1 E 1 1 l N i. I 9F *0 F u V. R. BOTTONE.

PUNCHING MACHINE.

APPLICATION FILED OCT. 29, I918. Q

- Patented June 22, 1920,

3 SHEETS-SHEET 3.

- ployed in the manufacture of separators for use in storage batteries ;the invention UNITED STATES PATENT OFFICE.

vxcroa n. Bo'r'roNE, or PHILADELPNIA, PENNSYLVANIA, AssIGNoR 'ro PHILADEL- PHIA STORAGE BATTERY COMPANY, or PHILADELPHIA, PENNSYLVANIA, A con- PORATION OF PENNSYLVANIA.

To all whom it may concern.

Be it known that I, VIo'roR R. BOTTONE,.

Punching-Machines, of which the following is a specification.

One object of my invention is to provldc a simple and substantial form of punching machine, especially designed for perforating thin sheets or plates of structurally weak material, such as the hard rubber emmore particularly contemplating a novel form and arrangement of the punches and cooperating diestructures for forming the very narrow elongated perforations desired in such structures.

I further desire to provide a novel construction of feed rollers for insuring the proper intermittent delivery of the thin sheets of material to the punches.

Another object of my invention is to provide novel means for mounting the individual members of a gang of punches in a head or supporting block whereby it shall be possible to quickly and conveniently remove and replace any of said punches the invention also including ,novel forms of the die and the stripper plate for 00- operating with the punches.

These objects and other advantageous ends Lattain as hereinafter 'set forth, reference being had to the accompanying drawings, in Which- I v Figure 1 is a front elevation of a punching machine constructed in accordance with my invention; a

Fig. 2 is a side elevation of a the machine-shown in Fig. 1;

Fig. 3 is a rear elevatlon, partly in section, on the line 3-3, Fig. 2, further illusportion of trating the invention;

Fig. 4 is an enlarged transverse vertical section of the punch and die supporting structures with their associated parts;

Figs. 5, 6 and 7 are fragmentary perspective views of the punch-carrying plate, the stripper and the die, with their associated parts;

Fig. 8 is a fragmentary perspective view, partly in section, illustrating the detail. construction of one end of part of the die;

.which are required 7 and 8) are undercut some distance below PUNGHING-MACHIN E.

Patented une 22, 1920.

Application fi led October 29,; 1918. Serial No, 260,169.

Fig. 9 is a transverse vertical section showing a modified construction for the ends of the spacer plate; and

Fig. 10 is afragmentary perspective of one of the completed separator plates made by'my machine.

In manufacturing the thin, hard rubber separators of the type shown in Fig. 10, in certain well known forms of storage batteries, the blank rubber sheets, having a thickness in the neighborhood of.01 5 of an inch, are required to be provided with series of relatively narrow elongated slots 1 whose width is prefer- .ably somewhat less than the thickness of the sheets in which they are formed. These slots are relatively close together and for properl forming them in the blank rubber sheets have successfully employed the machine illustrated in the accompanying drawings. This machine includes a supporting structure 2 carrying a base plate 3 and having standards 4 extending upwardly from the latter so as to provide guides for a reciprocable plunger 5. The standards also have bearings for a shaft 6 on which is mounted a driving pulley 7 and an eccentric whereby the plunger 5 is actuated through a rod 8. The ,base structure 3 is preferabl of an inverted U-sha ed section, being e ongated transversely o' the machine and having screwed or bolted to its flat top face two elongated blocks 9 and 10 which with an intermediate plate 11 tute the die of the machine.

This plate. 11 is clamped between the blocks 9 and 10 by screws or bolts 12 passing horizontally through the ends thereof, and the adjacentfaces of these blocks (Figs. longitudinally below a line extending parallelwith the top edges the same said edges being vertically recessed so as to cooperate with the plate 11 in defining two parallel series of narrow elongated punch receiving openings 13, although it is obvious that the openings may be arranged in other groupings without departing from mv invention. Said plate issupported with its top edge flush with the top surface of the two die members and 10, for which purpose the end portions of these have their adacent faces cut awavas indicated at 15,'Fig.

(Figs. 4 and 7) constitwo parallel series between a pair of

elongated blocks

18 and 19 by means of screws or bolts 20 passing transversely through the end of the latter. These blocks are mounted in a suitable recess in the under side-of a head 21 carried by the lower end of the plunger 5 where they are held by vertically extending screws shown in dotted lines in Fig. 4 and passing through openings 22.

The adjacent faces of these

blocks

18 and 19.

are vertically slotted to receive the punches 17 and a plate 25 is clamped between them to space the latter in such positions that they will properly enter the openings 13 in the lower die. The upper ends of the punches abut upon the flat bottom of the recess of the head 21 in which the

blocks

18 and 19 are mounted and as they are arranged in adjacent pairs, they are held from dropping out of their recesses by pins 26 each of which passes transversely through said blocks, the spacing plate "25 and one pair of the punches 17. The punches themselves are made of suitable steel such as that commonly employed in clock springs and the lower or work engaging end of each of them may be concaved from edge to edge as shown in Fig. 5.

For guiding and laterally supporting the parts of the punches 17 which project below the

blocks

18 and 19, I provide a guide block consisting of two

flat plates

27 and 28 held together in the same plane by screws 29 passing horizontally through their end portions, and held apart by a thin vertically extending spacer 80. plates adjacent said spacer are vertically recessed as indicated at 31 to permit the close passage through them of the punches 17, and the guide block is screwed or otherwise rigidly held to the top face of the die structure 9-10, having its under face recessed to form a sheet guiding slot or way immediately above the flat face of said structure. The vertical height of this slot is merely sufficient to permit of the free sliding through it of the rubber or other sheets to be punched, so that the guide plate 27-28 not only acts to direct each sheet but also serves as a stripper to prevent it moving up wardly with the punches as they are withdrawn after having been forced through it.

The edges of these For intermittently feeding sheets through i the machine I provide a pair of nip rolls 35-36 of which the latter is mounted in suitable bearings formed in thebranches of a Ushaped supporting structure 37 adjustper roll, which is supported in bearings 40 immediately above it, is circularly ribbed or corrugated. The bearings 40 are slidably mounted on studs 41 fixed in the arms or branches of the supporting structure 37 and are acted on by springs 42 mounted on said 3 studs in such a manner as to at alltimes yieldingly press the roll 36 toward the roll 35;-the parts being "so arranged that a substantially horizontal plane includin the guide slot between the blocks 27-28 an the 35 die 9-10, includes also the line of tangency of said rolls.

The spindles on which the rolls are mounted in the present case have fixed to them two coacting pinions 43 and 44 and one of said spindlesalso has fixed to it a ratchet wheel 45 kept from turning in one direction by a spring actuated pawl 46.

"For actuating this pawl I provide a pin 47 projecting eccentrically from one end of the shaft 6 and through a rod 48 I connect this pin with an arm 49 mounted to swing on the spindle 50 on which the roll 35 is fixed. The

pivot 51 connecting the rod 48 and the arm 49 also serves to carry a pawl 52 acted on by a spring so as to normall engage the teeth of the ratchet wheel '45. ft is noted that the feed rolls 35 and 36 are supported at the rear or back side of the die 9-10 and for guiding the blank sheet prior to its engagement by the punches, I provide a flat tubu-. lar' guideway 53 supported across the front of the machine on a pair of brackets 54 fixed to the structure 3.

Under conditions of operation power is applied to. .the pulley 7 so that the plunger 5 with the head 21 and its punches 17 are vertically reciprocated, and the resulting reciprocation of the rod 48 causes the pawl 52 to intermittently turn the ratchet wheel 45 1 with the feed roll 35. If now a blank sheet of hard rubber of the proper thickness and width be fed through the guideway 53 and entered in the slot or recess 56 between the die blocks 9-10 and the guide plates 27-28, 1

it will ultimately be engaged by the two sets of punches 17 and have formed init two lines of narrow elongated slots 1. Each time the head 21 with the punches is raised the sheet is fed inwardly until it is engaged 1 by the rollers 35-36 and thereafter the pairs of, lines of slots 1 are formed in it at the desired distances apart, which distances are usually slightly more than the thickness of the punches. The punchings formed supporting structure 3.

pass down through the cavity 57 (Fig. defined by the undercut portions of the die blocks 9 and 10 and from thence fall out through 'a suitable passage 58 in the die From the above description it will be noted that while the punches are so held as to be rigidly supported both laterally and at their ends, their mounting is such that by removing the

blocks

18 and 19 from their recess in the head 21, it is possible to quickly remove and replace any desired number of punches by forcing out the pins 26 whereby they are held in place. Moreover the sheet operated on is so guided andheld during the punching operation that it is effectually prevented from buckling, and I have found that owing to the peculiar arrangement of the ribs or corrugations upon the feed rolls said sheet is firmly held by reason of the small temporary indentations caused in it by said rolls, so that its slippage is effectually prevented and its positive feed is assured. Further, by having the feed rolls ribbed as noted, the punchings which ad here to the sheet owin to its electrified condition, are not presse into it by the rolls but are moved into the depressions between the ribs so that they do not affect said sheet.

I claim:

1. The combination in a punching machine of an elongated series of punches; a die; and a pair of rolls for feeding sheet vmaterial between the die and punches, said rolls respectively 1 havin ribs substantially at right angles to eac other.

2. The combination in a punchin v machine of an elongated series of punc es; a die; and a pair of rolls for feeding sheet material between the die and punches, one of said rolls being longitudinally ribbed and the other being circumferentially ribbed.

3. The combination in a punching machine of a reciprocatory head; a pair of blocks; a series of punches mounted between the blocks; pins extending through the I punches into the blocks for holding said punches from lon itudinal movement; means for clamping to the head; and a die having openings for the reception of the punches.

4. The combination in a punching ma through said punch for holding it againstlongitudinal movement; means in addition the blocks and punches 6. The combination in a punching machine of a reciprocatory head; a plurality of punches mounted in said head; a pin extending through said punches to hold them from longitudinal movement; means in addition to said pin for clamping the punches in the head; and a die mounted to coact with the punches.

7. The combination in a unching machine of a reciprocatory hea a lurality of sets of punches mounted in said head to extend in parallel lines; a series of pins each engaging the unches of one set for independently hol ing them from longitudinal movement; means other than the pins for clamping the punches in the head; and a die mounted to coact with said punches.

8. The combination in a unchin machine of a reciprocato hea two b ocks; a spacing piece mounte between the blocks; two series of punches res ectively mounted between the blocks and the spacing piece; with a die having openings for said punches.

9. The combination in a punching machine of a reciprocatory head; two elongated blocks connected thereto; .a spacing piece extending between said blocks; two series of punches res ectivel mounted between said plate 'and t e two blocks; pins extendingthrough the blocks and the spacing piece and each engaging two of the punches; with a die mounted to cooperate with. the punches.

10. The combination in a unchin machine of a reciprocatory head; two locks connected thereto; a plate mounted between the blocks; fiat blades constituting punches clamped in two series between the blocks and said plate; removable pins extendin through the blocks and the plate and eac engagin two of the punches; with a die mounte to cooperate with the punches.

11. The combination in a punching machine of a reciprocatory head; at least two punches mounted therem; a die mounted to cooperate with said punches; with a stripper mounted between the head and the die, said stripper consisting of two plates having their adjacent edges recessed for thereception of punches and an intermediate plate mounted between said recessed plates and cooperating therewith to define the punch receivin openings.

12. The com ination in a punching machine of a reciprocatory head; two lines of punches mounted therein; and a die cooperating with said punches, having openings for the punches, said die consisting of two blocks and an intermediate plate mounted between the same.-

13. The combination in a punching machine of a reciprocatory head; at least two punches mounted therein; with a die cona die consisting of two blocks having their sisting of two blocks having their adjacent adjacent edges recessed for the reception of edges undercutand recessed for the recepthe punches and formed with shouldered tion of the punches and an intermediate portions; with a plate extending between 5 plate extending longitudinally between said said blocks and supported on said shouldered 15 blocks to define the punch receiving openportions in position to cooperate with the ings. blocks to define punch receiving openings.

14. The combination in a punching ma- In Witness whereof I aflix my signature. chine of areciprocatory head; a plurality 10 of series of punches mounted therein; with VICTOR R. BOTTONE.