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Publication numberUS1894641 A
Publication typeGrant
Publication dateJan 17, 1933
Filing dateMar 4, 1931
Priority dateMar 4, 1931
Publication numberUS 1894641 A, US 1894641A, US-A-1894641, US1894641 A, US1894641A
InventorsShaw Louis E
Original AssigneeAdartcraft Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Steel rule die
US 1894641 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

Patented Jan. 17, 1933 PATENT LOUIS E. SHAVT, OF EAST GRANGE, KEV] JERSEY, ASSIG-NQR ADABTCRAFT, INCOR- PORATED, OF NE'W YORK, N. Y., A COBPOBATIQH GE DELAWARE STEEL RULE DIE Application filed March 4,

This invention relates to steel rule dies and more particularly to centering devices therefor.

In the use of steel rule dies for cutting or trimming sheet material or blanks of various forms, the blanks are frequently of such form that they have a tendency to stretch and even though one end is properly positioned by a guide when the blank is placed in the die, the product may not be properly centered when the die closes and cuts. This results in improper trimming of portions of the blank.

In the present invention 1 provide a plurality of yieldable centering devices adapted to engage the blank and properly position it before the oie closes and thus center it before the trimming operationactuallytakes place. I preferably provide the centering devices of difierent heights so that certain of them engage the blank prior to others and thus center certain portions of the blank at a time as the die is closin In the accompanying drawing I haveshown one embodiment of the invention. In the drawing,

Fig. 1 is a vertical, sectional view of a shaping die; l V

Fi 2 is a bottom, plan view of the upper mem er of the cutting die;

Fig. 3 is a sectional view of the cutting die slightly open;

Fig. 4 is a plan view of the lower member of the cutting die showing a blank in position;

Fig. 5 is a plan view of the trimmed blank;

Fig. '6 is a similar view of the blank after folding;

Fig. 7 is a detailed, sectional view of tire folded blank; and v Fig. 8 is a sectional view of a portion of the upper die member on an enlarged scale.

Referring to Fig. '1 of the drawing, the reference numerals 1 and 2 designate, respec tively, the lower and upper members of shaping or forming die. While the present invention may be applied to various types of blanks, I have illustrated it in connection with a display device of the type describe and cla med in the copending'application Rudolph M. Sanders, Serial No. 460.931, filed June 13, 1930 in which a cigar display simu- 1931. Serial No. 520,068.

lating a row or layer of cigars is arranged in a cigar box in a position normally occupied by the upper row of cigars. As shown in Figs. 5 to 7 of the drawing, the display device is formed from a blank consisting of a plurality of spaced embossings d simulating individual cigars, the individual embossings being spaced as indicated at (l in Fig. 5 of the drawing. The embossed blanks are preferably formed from a corrugated sheet 7 as described and claimed in my copending application, Serial No 520,067, filed March 4, 1931. This corrugated sheet is arranged the forming die, the lower or male member of which is provided with a plurality of projections 8 shaped to form the embossings a and adapted to cooperate with similar shaped depressions 9 in the other half of the die. Suitable heating means may be a ranged in the spaces 10 of the die members. I may employ heating coils or means may be provided for circulating steam through the heating spaces of the shaping and forming die.

In Figs. 2 to l of the drawing 1 have illustrated the cutting die. As shown in Fig. 4 of the drawing, the lower die member conists of a flat plate having guides 11 and 12 arranged on one side and one edge, respectively. The blank formed in the shaping die is shown in position on this lower portion of the cutting die and is provided with a right angle in one corner to permit approximate location of the blank on the die. This blank is adapted to be trimmed to the form shown in Fig. 5, cutting away the material adjacent each end of the individual embossings 1 and cutting the material 6 between the embossings as indicated at 13 in Fig. 5 of the drawing. The cutting die is also adapted to form a scored line or perforation 1 on each unembossed portion 6 of the blank to permit folding of the blank to the form shown in Figs. v6 and 7 of the drawing.

In Fig. 2 I have shown an upper die member 15 which is provided with cutting edges 16 shaped similarly to the shape of the blank shown in 5 of the drawing and adapted is immaterial.

blank on the lower die, the variations in the blanks are such that trimming is not evenly performed, unless the blanks are centered on the die. I accordingly employ a series of centering devices shown in Figs. 3 and 8 of the drawing which project from the surface of the die a distance slightly greater than the cutting members 16. As shown, these centering devices are arranged in pairs on each side of the cutters 16 and progressively decrease inheight from the center toward each end of the die. The two center pairs of centering devices 17 are adapted to engage the two sides of the center embossing and the adjacent side of the embossing at each side of the center and have a tendency to move them toward the end of the die. Similar centering devices 18, 19, 20, 21 and 22 are arranged toward each end of the die and are adapted to engage the embossings in pairs as the die is closed so that the embossings are properly centered in the die. The detailed construction of the centering device is shown in Fig. 8 of the drawing. As shown, it consists of a strip which may be formed of sponge rubber or other yieldable material extending over a considerable length of the embossing as shown in Fig. S2 of the drawing. It may he covered with a covering of cloth, paper, thin metal or fabric as indicated at 24.

The specific construction of the centering device and the material of which it is made It will be apparent that the device may be of the form shown or of any other suitable form adapted to engage the raised portion of an embossing and properly center it on the die. Itwill also be apparent that any compressible or yieldable material may be employed for this purpose so that the centering device will engage the sides of the individual cigar representations before cutting or scoring actually takes place and will then compress to permit closing of the die and cutting of the blank.

The blank shown in Fig. 5 is adapted to be folded along the perforated lines 14 to the form shown in Figs. 6 and 7 of the drawing and mounted on a suitable support.

I claim 1. A cutting die for an embossed sheet having a plurality of spaced embossings comprising a supporing member on which the sheet is adapted to be positioned, a second member cooperating therewith, cutting members carried by said second member to trim the sheet, and centering devices carried by said second member and adapted to engage the embossings to properly position said sheet with respect to said cutting members.

2. A cutting die for an embossed sheet having a plurality of spaced embossings comprising a supporting member, a guide arranged on said member to initially position the sheet, a second member cooperating with said supporting member, cutting members carried by said second member to trim the sheet, and centering devices carried by said second member and adapted to engage the embossings to properly position said sheet with respect to said cutting members.

3. A cutting die for an embossed sheet having a plurality of spaced embossings comprising a supporting member on which the sheet is adapted to be positioned, a. second member cooperating therewith, cutting members carried by said second member to trim the sheet and a plurality of yieldablc centering devices projecting from the surface of said second member a greater distance than said cutting members and adapted to engage the embossings to properly position said sheet with respect to said cutting members.

4. A cutting die for an embossed sheet having a plurality of spaced embossings comprising a supporting member on which the sheet is adapted to be positioned, a second member cooperating therewith, cutting members carried by said second member to trim the sheet and a plurality of yieldable centering devices projecting from the surface of said second member a greater distance than said cutting members, said centering devices being of various heights and adapted to suecessively engage pairs of said embossings.

5. A cutting die for an embossed sheet having a plurality of spaced embossings comprising a supporting member on which the sheet is adapted to be positioned, a second member cooperating therewith, cutting members carried by said second member to trim the sheet and a plurality of yieldable centering devices projecting from the surface of said second member a greater distance than said cutting members, said centering devices being of successively decreasing height from the center of the die toward, each end.

In testimony whereof I aiiix my signature.

LOUIS E. SHAW.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5974931 *Jul 7, 1997Nov 2, 1999International Business Machines CorporationFlex die punching apparatus and method
US6116127 *Jul 15, 1999Sep 12, 2000International Business Machines CorporationFlex die punching apparatus and method
US6272957Sep 8, 2000Aug 14, 2001International Business Machines CorporationFlex die punching apparatus and method
Classifications
U.S. Classification83/175, 83/138, 83/382
International ClassificationB21D13/02, B21D13/00
Cooperative ClassificationB21D13/02
European ClassificationB21D13/02