US2151119A

US2151119A - Die set

Info

Publication number: US2151119A
Authority: US
Inventors: Kiwi Walter
Original assignee: Individual
Current assignee: Individual
Priority date: 1937-09-14
Filing date: 1937-09-14
Publication date: 1939-03-21
Anticipated expiration: 1956-03-21

Description

W. KlWl DIE SET March 21, 1939;

Filed Sept. 14, 1937 dag/ 3022 m mm; n 8 [w an W j Patented Mar. 21, 1939 UNITED STATES PATENT OFFICE I 2.15 1419 Appflmtizz s ii tefirertrzzifz rial zo. 163,722 60lalms. (Cl.164-118) My invention relates to improvements in die sets, comprising punch and die members, for use with punch presses'and automatic machines.

The object of my invention is to provide means for readily mounting and removing they die sets from the die standards, or shoes, now in general use.

Heretofore it has been necessary to remove the shoes from the press when it was desired to mount the die sets upon' the shoes, or for changing the die sets for different sizes or shapes. The mounting of the die sets required the services of skilled die setters, as the die members were required to be accurately located upon the shoes for proper alignment. My invention eliminates the services of skilled die setters.

A further object is to provide guide plates upon the shoes for receiving different die sets, all of whichare' of uniform size and adapted to occupy said guide plates by sliding the die sets into the same, without changing the position of the guide plates upon the shoes.

A further object is to provide the die members with guide or dowel pins for forming the members .into a unit, with one member movable to and from the other upon said pins.

A further object is to arrange the dowel pins upon the die members to form guides adapted for guiding a strip of material between said pins and into a position to be operated upon by the die members.

These together with various other novel features of construction and arrangement of the parts, which will be more fullyhereinafter described and claimed, constitute my invention.

Referring to the accompanying drawing:

Fig. 1 is a front elevation of a portion of a press having standards, or shoes,- and embodying my novel die set and the mountings for the latter.

Fig. 2 is a transverse vertical section on line 2-2 Fig. 1.

Fig. 3 is a horizontal section on line 38 Fig.

Fig. 4 is a perspective view of the die unit deshoes are arranged with their faces l2 and II extending parallel to each other and are movable to and from each other by the head 6, in the usual manner.

Guide plates 5 and I6, forming a pair are secured to said face l2 of the shoe 1, and similar 5 plates l1 and I8 are secured to said face l3 of the shoe 8, by means of fastening devices IS.

A die set, comprising the female die member 20, and the punch member 2|, are formed into a portable unit by means of guide or dowel-pins 10 22, 23, 24 and 25. Said pins are secured in the members 20 and are slidably mounted upon the opposite member 2|. The pins 22 to 25 form means for slidably mounting a stripper plate 26, and also a block of rubber 21 for moving the stripper plate relatively to the punch member.

The guide plates I5 to l8 have tongues 30, which form guides extending parallel with said faces |2 and.|3 of the shoes. The die members and 2| are provided with grooves 3|, as shown 20 in Fig. 4, to receive the tongues 30.

The die members 20 and 2| each have a sliding fit upon the guide plates and the tongues 30, whereby the die unit may be readily inserted and removed from the guide plates and from the press. A stop plate 33 shown in Figs. 2'and 3, is secured upon the lower shoe 1 for limiting the rearward movement of the die unit relatively to the shoes. No other fastening means is required for securing the die set or unit upon the shoes.

Each set of die members is made for punching an article of a definite shape or size, from a strip of material 35, having a standard width. The dowel pins 22 to 25 are mounted directly upon the plates forming the die members, and said pins are symmetrically arranged upon said plates relatively to the normal center of the cutting action of the die members, whereby the dowel pins form guides for the strip 35. Said

pins

22 and 23 are arranged to form a pair, and the

pins

24 and 25 form another pair, so that the strip 35 will be guided by each pair of pins as shown in Fig. 3. Heretofore the pins for guiding the strip of material to the die set were mounted upon the shoes and not upon the die members, and required accurate adjustment relatively to the die set. By mounting the pins' 22 to 25 directly upon the die members they are always in the proper position for guiding the strip 35 relatively to the die set.

The operation of my invention is as follows: all the die members of a series for making a run of parts to be punched are of uniform size and adapted to fit between the guide plates attached to the shoe set, so that the die sets can be readily inserted and removed from the guide plates and from the press without the aid of skilled labor, and without removing the shoes from; the press, which latteroperation required the press to be first disconnected from-the source of power for operating the press.

Die sets of other sizes can be used by changing the position of the guide plates upon the shoes by providing the'latter with diiferently located holes for receiving the fastening devices l9, thus avoiding the necessity of removing the shoes from for slidably mounting said die members upon theshoe members for movement in a plane parallel with said faces.

2. In combination, cooperating shoe members adapted for mounting in a punch press, said members having parallel faces movable to and from eachother, a pair of cooperating die members, means connecting said die members for movement relatively to each other and forming said die members into a portable unit, a pair of guide plates mounted upon each of said faces of the shoe members and arranged to embrace :a die member between each pair of said guide plates, and cooperating guide means upon said guide plates and the die members arranged for slidably mounting the die unit for movement in a plane parallel with said faces.

3. In combination, cooperating shoe members adapted for mounting in a punch press, said members having parallel faces movable to and from each other, a pair or cooperating die members, means operatively connecting said die members and forming the latter into a portable unit, a pair of guide plates secured to each or said races and arranged to embrace a die member bepins symmetrically arranged to form guides for arcane tween a pair of guide plates, a guide tongue upon each guide plate and extending parallel with said faces, and said die members having grooves rormed therein adapted to be occupied by said tongues ror slidably mounting the die members 5 I for movement in a plane parallel with said faces.

4. In combination, a punch press having members with parallel faces movable to and from each-other, a pair of cooperating die members, means connecting said die members for movement to and from each other and forming said die members into a portable unit, a pair of guide plates mounted upon each of said faces, cooperating guide means upon said guide plates and the die members arranged for slidably mounting the die unit for movement in a plane parallel with said faces, and a stop plate secured to one of said faces and arranged for limiting the movement of the die unit in one direction relatively to the guide plates.

5. In combination, a punch press having members with parallel faces movable to and from each other, a pair of cooperating die members, pins connecting said die members for movement races arranged for slidably mounting the die members for movement in a plane parallel with said faces, and said pins symmetrically arranged relatively to the normal center of the cuttizg action of the die members to form guides Ior 40 recting a strip of material between said pins to be operated upon by said die members.

6. In combination, cooperating shoe members adapted for mounting in a punch press, said members having parallel faces movable to and as from each other, a pair oi cooperating die mem bers, pins secured upon one of said die members and slidably mounted upon the opposite die member and forming'the die members into a portable unit, guide plates, means securing the guide plates 40 upon the shoe members, said guide plates arranged ior slidably mounting the die unit for movement parallel with said faces, a stripper plate slidably mounted upon said pins, and said directing a strip of material between the pins to be operated upon by the die members.

WALTER KIWI.