US2725817A - Work holding fixture for foil stamping machines - Google Patents

Description

Dec. 6, 1955 K|NGSLEY 2,725,817

WORK HOLDING FIXTURE FOR FOIL STAMPING MACHINES Filed June 2, 1952 2 Sheets-Sheet 1 v 6"\L m j 6 xf 27 Q m J5 a 29 29 a0 J an 22 24 3 j 3 A, 25' 2/ e 1210! j INVENTOR. F28. 1 1 M/s ,4. /f//v6's. V

Dec. 6, 1955 L. A. KINGSLEY 2,725,817

WORK HOLDING FIXTURE FOR FOIL STAMPING MACHINES Filed June 2, 1952 2 Sheets-Sheet 2 as 29 2s \wmmmmmm FIG/.8 2/ a/ 4 4/ 13 I Q Q L f a v 4 w a INVENTOR.

A T 70 ENE/J United States Patent Patented Dec. 6, 1955 WORK HOLDING FIXTURE FOR FOIL STANIPING MACHINES Lewis A. Kingsley, Los Angeles, Calif. Application June 2, 1952, Serial No. 291,222

9 Claims. (Cl. 101-41) My invention relates to work holding fixture for a foil stamping machine, and included in the objects of my invention are:

First, to provide a device of this class which is particularly adapted to guide and hold wire rods or tubing whereby identifying indicia or the like may be stamped at spaced points, said device incorporating means which may be quickly adjusted to handle material of different diameters.

Second, to provide a device of this class which is capable of handling wire of the smallest diameter that may permit imprinting of legible indicia.

Third, to provide a device of this class which is capable of use with either manually operated or motor operated foil stamping machines.

Fourth, to provide a device of this class which may be quickly set in place or removed from the foil stamping machine to permit use of the machine for other purposes.

With the above and other objects in view as may appear hereinafter, reference is directed to the accompanying drawings in which:

Figure l is a side view of a foil stamping machine showing my work holding fixture in place.

Figure 2 is a fragmentary elevational view taken from the line 2-2 of Figure 1, showing particularly the work holding fixture and its relation to the stamping die.

Figure 3 is a plan view taken along the line 33 of Figure 1 showing the work holding fixture.

Figure 4 is a rear elevational view of the work holding fixture removed from the foil stamping machine and taken from the line 44 of Figure 3.

Figure 5 is a longitudinal sectional view of the work holding fixture taken through 5-5 of Figure 3.

Figure 6 is a transverse sectional view thereof taken through 66 of Figure 5.

Figure 7 is a perspective view of the anvil employed to hold tubing.

Figure 8 is a sectional view similar to Figure 5 showing an anvil suited for holding a small diameter wire.

Figure 9 is a fragmentary, enlarged transverse sectional View of the anvil shown in Figure 7.

Figure 10 is a sectional view similar to Figures 5 and 8 showing a modified form of the anvil with a guard plate thereover.

Figure 11 is a plan view thereof with a portion of the guard plate broken away.

Figure 12 is a transverse sectional view thereof taken through 12-12 of Figure 11.

My work holding fixture may be used with a manual or a motor driven stamping machine. For purposes of illustration, my work holding fixture is shown in conjunction with a manually operated foil stamping machine. Such a machine comprises a base 1 from which extends a gooseneck bracket 2, terminating in a vertically disposed head 3 which carries a ram 4. The ram may be provided with a rack for engagement by a gear, not shown, but adapted to be actuated by an operating lever 5 to cause vertical movement of the ram 4 to and from the base 1. The lower end of the ram is provided with a type or die-receiving head 6 slotted at its underside to receive a type or die holder 7. A suitable electric heater 8 is attached to the head 6 for the purpose of heating the type or die 9 which projects downwardly from the type holder 7. The temperature of the heater may be controlled by a suitable regulator 10 conveniently mounted at one side of the bracket 2.

Supported under the bracket 2 is a foil supply drum 11 which carries a ribbon foil 12 adapted to extend under the type 9 and into a ratchet feed device 13 arranged to advance the foil under the type upon reciprocation of the ram.

The structure so far described may be considered as conventional.

My work holding fixture includes a base block 21 adapted to be mounted on the base 1 under the ram 4. The base block is provided with a channel 22 in substantially centered relation with the line of type 9 The base block may be held in place by screws 23 exposed at the bottom of the channel 22 and extending into the base 1. The channel 22 is adapted to receive interchangeable anvil bars 24. For example, an anvil bar may be provided with a work supporting rib 25 in registry with the line of type 9 as shown in Figures 1 through 7, or may be provided with a work receiving groove 26 also disposed for registry with the line of type as shown in Figures 8 and 9, or may be constructed as shown in Figures 10, 11 and 12 and described in more detail hereinafter.

Adjacent each end of the base block, there is pro vided a cross channel 27. The interchangeable-bars 24 project into the cross channels but are provided with lateral clearance notches 28. Each cross channel 27 receives a pair of guide jaws 29 which are slideable therein to and from the anvil bar 24-.

The front and rear sides of the base block are provided with bearing plates 30 which journal adjustment screws 31 extending longitudinally in the cross channels 27. it will be observed that the cross channels are cut entirely through the base block except for a central web 32 which journals the central portions of the adjustment screws 31. The adjustment screws are provided with opposed, that is right and left, screw threads and the lower extremities of the guide jaws are similarly screw threaded. In order to minimize free movement or play of the adjustment screws, their extended ends are provided with compression springs 33. Their opposite, or forward ends, are provided with knobs 34. The adjustment screws 31 are so arranged that they cause the guide jaws 29 to move toward or from each other but to remain substantially equidistant from the vertical plane passing through the central line of type 9.

Each pair of guide jaws is provided with aligned clearance grooves through which extends a roller bar 35 journaled at its extremities in the bearing plates 30. The roller bars may be retained in place by lever members 36 mounted on the front bearing plate. By moving these levers to one side, the roller bars may be removed.

The rear bearing plate supports a foil guide bar 37, preferably by means of journal brackets 38 and 39, one of which is pivotable (as shown in Figure 4) so that the foil guide bar may he slipped from the other journal bracket and tilted (as shown in Figure 4) to facilitate placement of the foil ribbon. s V

The interchangeable anvil bars 24 are secured in place by thumb screws 40, accessible from the front side of the base block 21.

Reference is directed to Figures 10, 11' and l2.v The anvil bar 24 is here shown as provided with a guard plate 41, yieldably supported at its corners above the anvil 3 bar by springs 42 and limited in its upper position by pins 43. The guard plate 41 is provided with a central slot 44, large enough to accommodate the line of type 9.

In use, the tubing is passed under the plate in registry with the slot 44. The ram or margins of the type, beyond the actual printing surface, engages the plate, causing the plate to depress and flatten the tube for printing.

Operation of my work holding fixture for foil stamping machines is as follows:

If it is desired to imprint indicia on tubing for assembling a plastic tubing, an anvil bar having work supporting rib 25 or the anvil bar (shown in Figures 16, 11 and 12) is selected. The anvil bar is secured in the channel 22 and the work fed under the roller bars 35 and over the anvil bar. The guide jaws 29 are adjusted so as to bear against opposite sides of the tubing (as shown in Figures 1 and 3). The roller bars preferably depress the tubing slightly so that although the tubing may be readily drawn through the fixture, it is sufiiciently restrained as to remain in place during the stamping operation. Stamping is accomplished by forcing the heated type 9 downwardly against the foil 12, forcing the foil against the surface of the tubular workpiece.

If it is desired to foil stamp wire, for example, plastic covered wire, an anvil having a work-receiving groove 26 is selected. An anvil is provided for each size of wire and the height of the work-receiving groove is such that the wire is engaged by the roller and bars 35. As in the case of work in the form of plastic tubing, the guide jaws 29 are moved into engagement with the wire so as to aid in maintaining the wire in the groove and provide the desired frictional resistance to its movement.

Having fully described my invention, it is to be understood that I do not wish to be limited to the details herein set forth, but my invention is of the full scope of the appended claims.

I claim:

1. The combination with a foil stamping machine having a stamping head adapted to carry a line of type, of a holding fixture for tubular or rod-like workpieces, comprising: a base block having a longitudinally extending anvil channel, and a pair of transversely extending cross channels, one near each extremity of said anvil channel; an anvil fitting said anvil channel and traversing said cross channels, said anvil having means for supporting a tubular or rod-like work piece in registry with said line of type; roller bars disposed in alignment with said cross channels and cooperating with the end portions of said anvil to depress said work piece; guide jaws slidable in said cross channels and guided in part by said roller bars, said guide jaws adapted to extend over the end portions of said anvil to engage the sides of said work piece thereby to center said work piece on said anvil; and means for advancing and retracting said guide aws.

2. The combination with a foil stamping machine having a stamping head adapted to carry a line of type, of a holding fixture for tubular or rod-like work pieces, comprising: a base block having a longitudinal anvil channel disposed under said line of type and transverse channels at the extremities thereof; ananvil adapted to be secured in said anvil channel and having end portions projecting into said transverse channel, said anvil adapted to receive a tubular or rod-like work piece disposed lengthwise in centered relation with said line of type; a pair of guide jaws mounted in each transverse channel and having work-engaging tips extending over the end portions of the anvil to engage opposite sides of said work piece; means for varying the space between each pair of work-engaging tips to accommodate work pieces of different diameters; and depresser rollers above the end portions of said anvil and having axestraversing the .work piece thereon to hold the work piece on said anvil and between the work-engaging tips of said guide jaws.

3. The combination with a foil stamping machine having a stamping head adapted to carry a line of type, of a holding fixture for tubular or rod-like work pieces, comprising: a base block having a longitudinal anvil channel disposed under said line of type and transverse channels at the extremities thereof; interchangeable anvils for said anvil channel adapted to hold specific types of tubular and rod-like work pieces and having means for hacking a work piece under said line of type; a pair of guide jaws mounted in each transverse channel and hav work-engaging tips extending over the ends of said anvil to engage opposite sides of work disposed on said anvil; and means for varying the space between each pair of work-engaging tips to accommodate different diameters of work pieces.

4. The combination with a foil stamping machine having a stamping head adapted to carry a line of type, of a holding fixture for tubular or rod-like work pieces, comprising: a base block having a longitudinal anvil channel disposed under said line of type and transverse channels at the extremities thereof; an anvil adapted to be secured in said anvil channel and receive a work piece extending longitudinally thereover; a screw shaft having opposed pitch screw threads disposed in each transverse channel; a pair of guide jaws including work-engaging tips extending over the ends of said anvil, said guide jaws being slidable in each transverse channel and screwthreaded on said shaft for simultaneous movement to and from said anvil to accommodate work pieces of different diameters; and depresser rollers positioned above the ends of said anvil to hold the work piece against said anvil.

5. The combination with a foil stamping machine having a stamping head adapted to carry a line of type, of holding fixture for tubular or rod-like work pieces, comprising: a base block having a longitudinal anvil channel disposed under said line of type and transverse channels at the extremities thereof; interchangeable anvils for said anvil channel adapted to hold specific types of tubular and rod-like work pieces and having means for backing a work piece under said line of type; a screw shaft having opposed pitch screw threads disposed in each transverse channel; and a pair of guide jaws slidable in each transverse channel and screwthreaded on said shaft for simultaneous movement in said transverse channels to and from said anvil; said guide jaws including worleengaging tips extending over the ends of said anvil to engage opposite sides of work pieces positioned thereon.

6. The combination with a foil stamping machine having a stamping head adapted to carry a line of type, of a holding fixture for tubular or rod-like work pieces, comprising: a base block having a longitudinal anvil channel disposed under said line of type and transverse channels at the extremities thereof; interchangeable anvils for said anvil channel adapted to hold specific types of tubular and rod-like work pieces and having means for backing a work piece under said line of type; a screw shaft having opposed pitch screw threads disposed in each transverse channel; a pair of guide jaws slidable in each transverse channel and screwthreaded on said shaft, said guide jaws including workpiece-engaging tips extending over said anvil and simultaneously movable on turning of said shaft to accommodate work pieces of different diameters; and depresser rollers extending over said anvil to hold said work pieces on said anvil and between said workpiece-engaging tips.

7. A combination as set forth in claim 4, wherein: said anvil is adapted for yieldable tubular work pieces and is provided with a raised anvil rib.

8. A combination as set forth in claim 4, wherein: said anvil is adapted for yieldable tubular work pieces and a guard plate is disposed over said anvil; springs supporting said guard plate, saidguard plate being apertured to exose a section of said work piece in registry with said line of type, and said guard plate being engageable by said stamping head and depressable to flatten said work piece.

References Cited in the file of this patent UNITED STATES PATENTS Steele et al. Nov. 15, 1904 Shufelt Nov. 22, 1910 6 Gross Dec. 30, 1913 Woodworth Sept. 18, 1928 Halvorsen Oct. 29, 1929 Halvorsen Aug. 19, 1930 Mintz Dec. 24, 1935 Kingsley July 14, 1936 Kingsley Feb. 28, 1939 Kingsley- Aug. 1, 1950

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