US1669477A - Stamping and embossing press attachment - Google Patents

Description

May 15 1928.

R. LANGE STAMPING AND EMBOSSING PRESS ATTACHMENT Filed May 23, 1925 3 Sheets-Sheet 1 R. LANGE STAMPING AND EMBOSSING' PRES S ATTACHMENT Mai 15, 1928.

Filed May 23, 1925 3 Sheets-Sheet 2 5 Sheets-Sheet May 15, 1928.

R. LANGE STAMPING AND EMBOSSING PRESS ATTACHMENT Filed May 23, 1925 avwe/ntoz x? S: 3;; Z a o A 9 (III! \|\|.|l L a a M" A Patented May 15, 19.28.

. yawn erhrES PATENT QFFIQE.

RICHARD LANGE, OF WEST HOBOKEN, NEW JERSEY.

Application filed May 23, 1925. Serial No. 32,319.

This invention relates to press attachments and has for its 'ObJQGt, the provision of means for feeding stamping and emboss ing material as roll leaf, metal leaf and the like under predetermined conditions which govern the rate and extent of feed.

Another object includes the provision of a construction which is compact and selfcontained, so as to be readily handled and quickly transferred from one stamping press to another. I further place the feed rolls at an angle to the feed table, thereby providing an arrangement for readily threa ing the strips of stamping material through the machine and correctly locating the same on the feed rolls.

A further object includes the provision of means for quickly adjusting without tools, the machine to vary the extent of stamping material pulled by the respective feed rolls to suit the work at hand. Another object embraces the provisionof a compact and entirely self-contained machine which has comparatively few parts, is easily transported and is comparatively cheap to manufacture and readily replaced. By my arrangement of the feed rolls a direct feed of the roll leaf, or metallized leaf, is obtained thereby obviating trouble due to leaf wrapping around and cut-angling in the rolls.

Other objects will appear hereinafter and I attain these objects by the construction illustrated in the accompanying drawings in which:

Fig. 1 is a plan view of a construction embodying the principles of my invention.

Fig. 2 is a side elevation thereof showing the adjustment mechanism.

Fig. 3 is a view taken on the line 3--3 of Fig. 1.

Fig. 4 is a View taken on the line 4.-4 of Fig. 1.

Fig. 5 is a view taken on the line 5-5 of Fig. 1. r

Fig. 6 is a view in section showing the ratchet clutch.

Fig. 7 is a view showing a manner of tensioning the idler rolls and Fig. 8 is a view taken on the line 8-8 of Fig. 4, looking in the direction of the arrows.

Like numerals refer to the same throughout the several views.

It among the prime purposes of my parts invention to provide a stamping and embossing'press attachment which is self-contained and wherein one of the main features of construction provides means for feeding the roll leaf slowly and uniformly to the desired extent without damaging or tearing the carrier strips during the feeding operations. In known machines for feeding roll leaf or the like, the leaf is fed. with uneven or jerky motions, thereby causing the carrier strip to tear and cause trouble by catching in .the rolls. Even under the most favorable conditions the used strip has a tendency to tear because in the stamping operations the die which-transfers the stamping medium from the carrier strips to the article stamped has tendency to perforate the carrier strip, thereby weakening-it greatly. Any uneven and sudden movements of the feed mecha nism accordingly will cause the weakened strips to break and delay operations. It is evident therefore that a uniform slow feeding mechanism is most desirable and gives the best results. I obtain this desired feed motion by a special drive construction for the feed rolls whereby the feed rolls are driven independently of the stamping press with which the attachment is operated. That is to say, the feed rolls are not driven directly from the press but are totally inde-, pendent thereof. For the purpose of driving the feed rolls any suitable mechanism may be used. In a preferred construction I utilize a torsion spring which is wound with the movement of the press platen and the torsional stress of the spring is then utilized in causing the roll, or rolls, to advance at a slow and predetermined speed, which is controlled by a regulating governor or con trol device. This device may be any suitable control mechanism, as a geared electric motor, or a suitably placed dashpot, or other means whereby the feed movement of the rolls is properly retarded.- Illustrative of my invention, I have shown atorsion spring as the means for feeding the metallized strip a definite distance with a slow and uniform pull and the governor or control device is an electric motor which retards the return movement of the spring and therefor also the control feed roll, or rolls, in the manner to be stated more fully herein-after.

motor 19.

in the accompanying drawings, the frame or bed plate is provided with inclined end arms 11 and 12 and with press attachment means in the form of a dove-tailed lug piece 13. The latter piece fits into a slot 14: on the press frame 15 readily attaching the mechanism to any standard press suited for using metallized roll leaf in ornamenting, stamping and embossing or the like. The arms 11 and 12 carry the mainor feed rolls 16 and the idler rolls 52 together with the operative parts associated therewith. The

frame also carries the wind up plunger and regulator cup 18 and the governor or control The latter isconveniently supported on a cover plate 20 which is removable for ready access to the retarding con trol mechanism 21, whichis shown in section by Fig." 4. This 'mechanismis carried on the operatingijournal 22 which is suitablyheld in place by bearings 23 and 24-.

Journal 22 is also providedwith a head 25 which isfastened to the said journalby a pin 26. The journal head 25 is provided with a crank arm 27 which engages the re winding plunger stem 28 ofplunger piston 29. This plunger operates in the dashpot in cup 18 and the stem extends through the floor of the bed plate in a bearing 30 tobe positively moved upwards by the press platen (not shown) 1 to wind up the torsion spring 31 for operatingthe teed rolls. A set screw 32 provides means for proper adjustment between the press platen and the i the journal 22 by a pin 38.

plunger stein. One'endot' spring 31 is fastened onto the casing and the other is tastened onto a sleeve 33 which is secured to This arrange ment causes spr1ng31 to be tensioned or wound up when the plunger 28 is raised. It

r is evident that without a retarding device "and 40"; The amount of advance for each the head25. and 2, such a the return of the torsion spring 31 and head. i

roll is dependent upon the length 01: cord pull and thislength is-varied by the position on a the pull arm 35.

The cords 39 pass over the pulleys 4C1 on the outer roll and the end of each cordis fastened to the individual roll sleeve 12; which is rotated by the pull of the cord against the tension of a suitable spring 43 within the roller sleeve. One end of this sleeve is carried on a bearing 4 1 and row, the ball will remain ine'itective.

ings 49 the 1 roll.

strip is thus controlled as strip feed and therate at which it is adthe other end has an enlarged head containing a noiseless ratchet clutch 15. This clutch comprises a )lurality of clutch balls 16 which are held y a spring 47 inoperative position. While the head is rotated counter clockwise in the direction of the ar- When, l'lQWQVGI, the motion is reversed, the balls will ride up the incline plane in the head and grip on the outer surface thereby locking the sleeve and its attachedroll 16 against rotation in that direction. The feed rolls 16 are supported in the frame arms 11 and 12 and the manner best shown in Figs. 1 and 5. In the 1 construction shown three full rolls are. provided, but obviously the number of rolls employed may. vary to meet required or desired needs. of these rolls is alike and therefore a de- SCl'lPillOl'l of one of the rolls will suffice.

The roll body 16 is companion roll 52 which is here shown as an idler. Ajournal 18 is provided with bearresponse to the pull and in the direction stated above. An end clutch 51 similar in consiruction to its companion clutch 45, but oppositely placed, controls the directionot pendent rotation of each feed roll in the same direction, which is hereln counter-clockwise,

and on whichthe roll rotates in.

This construction permits inde-" The construction. 1

knurled to positively grip the roll leaf in conjunction with its to thereby advance the leaf roll witn each return or downward movement of the plunger 28. As each roll is controlled by its own and thelength of pull depends pull cord cordi end on the upon the position of the feed roll arm, it is evident that each roll to the length of vanced or ted. i i

The companumroll 52 is pivotally held on a rocker armj53 and rstensioned to grip the leaf roll by means of a tension spring 54, the free end of which is hooked on a finger ice 55 project-ingt'rom the frame arm 11 at one end and from the frame arm 12at the other.

This provision gives a'positive grip on the paper of the leaf strip and the relative positions oil the two companion rolls (16 -52) allows the tree used end of the leaf roll to fall awaycfrom the attachment, This isa great advantage as the free or broken ends of the leaf roll arccfree to drop down and do not get caught inthe companion rolls.

As stated above, in order to provide for the desired slow or retarded pull of the rolls on the roll leaf, a brake device is provided and this brake device controls the return or unwinding otthe operative spring. Any

suitablemechanism which will retard the return motion of the spring 31 and thus providea steady pull willsuflice. In a pre ferred form,I haveshownI a motor governor or retarding device 19 which is conveniently .22 to rotate and wind roses-"1r attached directly ,onto the plate 20. A bush ing '60 in plate 20 is provided for the motor drive axle 61. The motor drive axle carries the reduction gear 61", which operates gears 62 on the bevel gear 62 of known construction, .and provides means for reducing the rate of rotation in proper ratio of the motor axle and the sleeve gear 63, which is driven from gear 62. The sleeve gear 63 is loosely mounted on sleeve 64, which is carried freely on the journal 22. On the flange of the sleeve gear 63 there is secured by suitable means, as a key 63 the silent ball clutch 45, which is surrounded by the journal hub extension 65 and is secured to the journal 22 by a pin 80. The operation of the retarding construction (see Figs. 3, 4, and 8) is as follows:

When the printing impress made, the printing platen (not shown) strikes the lower end, or set screw 32 of plunger 28, and by pushing up this plunger, causes journal up spring 31. The plunger 28 and arm 27 will then assume the position shown in Fig. 3 and by reason of .the spring tension will unwind or move in the direction indicated by the outer arrow in Fig. 8. The rate of the unwinding will be controlled by the motor through the retarding gears and the clutch about as follows: The retarding sleeve gear 63 and the clutch 45 being united will rotate in unison in the direction indicated by the arrows on the clutch (Fig. 8) and the rate of rotation will be constant and controlled by that of the motor. Since spring 31 is wound up the shaft 22 and its hub extension 65 will tend to move also in the direction of their arrows, but because of the clutch balls 46, the shaft and hub extension cannot over-ride the balls or rotate faster than the sleeve gear and clutch. The speed of the motor there fore controls the speed of the return motion of shaft 22, its head 25, the pull arm 35 on the head, and of course, also the pull cords 39 and the respective feed rolls 16.

The motor shaft 61 also carries at its end a bevel gear 67 which meshes with a sleeve gear 68. The latter gear is fastened onto the sleeve shaft 64, which is loosely mounted in journal 22. The sleeve shaft 64- is further provided with a standard type of friction clutch 69 for automatically operating the contact device 7 0 of known cam structure, on journal 22, whereby the motor circuit (not shown) is automatically closed during the return motion of journal 22, so that the motor is in operation only during the return motion of the journal 22, and its connected head 25 and arm 35.-

While I have shown and described my iii-- vention as being embodied in a specific construction for the purpose of illustrating the same, I do not thereby desire to be understood as thus limiting myself unduly, as various modifications falling wholly within the'spirit and scope of my invention will suggest themselves to those versed in the art. I

lVhat I claim therefore as new and useful of my own invention and desire to secure by Letters Patent is: I

1. In a stamping and embossing attachment, means for gripping transfer material for advancing the same in accordance with the required needs, means for imparting potential energy to said gripping means and means for liberating said potential energy in timed relation to advance the transfer material a predetermined distance.

2. In a stampingand embossingattachment, means for engaging transfer material to advance the same predetermined distances, means for storing energy to impart the same to said transfer engaging means, and means to control said imparted energy to advance the transfer material predetermined distances.

3. In a stamping and embossing attachment, a plurality of transfer engaging members, tensioning means associated with said members for storing energy, means for placing under tension said tensioning means whereby said transfer engaging members are caused to be rotated in timed relation to advance the transfer materials at varying distances.

4. In a stamping and embossing attachment, a plurality of transfer engaging members each of said members being adapted to engage a transfer strip, and means for advancing each strip a predetermined distance at a varying rate of speed.

5. In stamping and embossing attachment, a transfer engaging roll adapted to engage a plurality of transfer strips to advance said strips a uniform distance and means including a spring to cause said roll to be driven by the potential energy of said. spring for advancing said strips.

6. In a stamping and embossing attachment, a plurality of transfer engaging members, each adapted to engage its transfer strips and means including a tensioned spring to cause said vstrips to be advanced slowly at definite intervals.

7. In a stamping and embossing attachment, the combination of a transfer advancing roll, a frame for said roll, a tensioning member associated with said roll, means for winding said tensioning member while said roll is held stationary, and means for controlling the release of said tensioning member to slowly advance said roll a definite distance.

8. In a stamping and embossing attachment, the combination of a plurality of transfer rolls to advance transfer strips, 2. frame for supporting said rolls at an angle to the horizontal, a pull cord for each roll to permit adjustment of said roll to the extent thatthe roll will be permitted to ad- Vance said strips;

9. In a stamping and embossing attachment, the combination of a plurality of transfer rolls to advance transfer strips, a frame for supporting said rolls at an angle to the horizontal, a drum for each roll, a pull cord for each drum, a tension member in said drum for causing rotation of said drum in. one direction, clutch members on said roll to control the rotation of said drum,

to said drum for and a pull cord attached associated roll to spacedrolls, a frame for supporting sai rolls at an angle to the horizontal, a jour-' spring on saidv means for tBIlSlOIllIlg said power had in said frame, a power ]ournal,

spring, and means to control said tensioned power spring to release the same slowly and to thereby cause the strip to be advanced slowly and uniformly.

1 2. In a press attachment, a plurality of spaced rolls, a frame for supporting said rolls at an angle to thehorizontal, ajournal in said frame, a power spring on said journal, means for tensioningsaid power spring, an electric motor and brake clutches to control the release of said power spring.

18. In a stamping and embossingattachment, the combination ofa plurality of transfer rolls to advance-transfer strips, a

frame for supporting; said rollsat an angle 1 to the horizontal, a drum for each roll, a

member on said roll, a power member for said drum memher to advance the transfer strip a predetermined distance, and a governor to control the rate at which said roll is advanced. 9

A 14-. In a press attachment a plurality of for supporting said spaced rolls, a frame rolls at an angle to thehorizontal, a 1ournal in said frame, a power spring and a control mechanism on said journal, means to ten-X SlOIl said power spring and a motor to be placed into and out of operation ,by said d' control device.

In testimony whereof have hereunto set my hand on this 11th day of May,"A. D

1925. i u i l v RICHARD LANGE;

drum for advancing said'

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