US1128209A - Stamping-machine. - Google Patents

Description

H. w. WINTER.

STAMPING MACHINE.

APPLICATION FILED APB.29, 1912.

. Patented Feb. 9, 1915.

mmmmm J6 HENRY w. WINTER, or METH'UEN, MASSACHUSETTS, Assrenon To UnITEn sHoE MACHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

' STAMPING-MACHINE.

Ap'plication tiled April 29, 1912. Serial No. 693,874. 7 I

To all whom it moi concern;

Be it known that I HENRY citizen of the United States, residing at Methuen, in the county of Essexand vState OfZAIHSSZIClIHSBttS, have invented certain Im provements in Stamping-lVIachines,of which the following descriptiomin connection With the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to improvements in machines for stamping, embossing or: otherwise-marking sheet material and more par-, v

head. An advantage incident to this construction 1s that it affords convenient opporticularly to machine s for embossing with metallic powder upon partsof boots and shoes, although many of its features may-be embodied to good advantage in stamping application Serial No. 599,495 filedDecemmachinesof general utility.- I I I In one of its aspects the invention consists in improvements in stamping machines of the character disclosed in my, co -pending ber 27', 1910, while inanother aspect the invention consists in improvements in the work supporting parts vof the machine, d1sclosed in the co pending application Orr.

M.Wa11ace, Serial No. 686,517, filed March o .1

One object of the invention is tqprovi de a stamping machine in which thestamping die and work support are arranged for a relative transverse movement in addition to the relative approaching movement in which the impression is effected, An important advantage resulting from thisconstructron is that-work .placed upon the supportpreliminarily to the impression is more. fully in view of the operator than in machines heretofore constructed and .s o may be 10- cated more accurately in; stamping position.

; A- machine havingthis characteristicmay be arranged to operate with a shorter Working stroke than one in-iwhich'the die must be lifted sufficiently to permit the operator to see the Work beneathit. Another advantage incident to this construction is that it permits the presentation of success ve pieces of the work by turning fi'atwise like the leaves of a book and this manner ,of presentation WINTER, a

I stamping.

isfmuchmore convenient for the operator' when handling apile' of blanks placed in front of the machine thanit wouldbe to present the blanks bysliding them edgewise upon the work support. The withdrawal to one side of the die carrier also leaves suf- 7 placed upon the work support in those cases Where it'is desired to utilize this medium for In the machine herein shown the die is held in acarrier arranged to slide in ways upon a vertically rec procating stamping tunity for applying a stamping medium to the die between successive impressions.

To th s'end another important feature of the lnvention conslsts 1n the provlsion of a:

receptacle for containing a metallic stamp: mg powder or the like arranged normally at one side, of the path of the'die carrier, to-

gether With'means for moving the receptacle into applying position during the transverse movement of the; die carrier. A further advantagealso incident to this constructionis that opportunity is afforded for cleaning the dieafter each impression of the work and iwith this end in view there is provided a vvipi-n brush over which the die is drawn pr or 0 the application'of fresh stamping medium.

Other the construction of the Work support, to provision forits adjustment and to meansfor clamping the Work in stamping position.

In order thatthe machinc may be utilized features of 'the invention relate to this plate andito clamp the'work in theQIOO gag proper position there is provided a sliding member normally spaced slightly from the overhanging plate and arranged to be moved automatically toward the plate when the machine is set in operation. As herein shown, there is provided a spring which tends to move the clamping plate into operative position and suitable connections are provided with a cam which permits the spring to act when the machine is started.

A feature of the invention which relates to the adjustment of the work support con-- sists in the provision of a standard having a downwardly projecting post and carrying upon its upper surface the supporting and clamping plates. A screw is disposed concentrically in the'standard post and provided with a beveled gear meshing with another beveled gear on a short shaft extending outwardly through the machine casing. By turning this shaft the standard with the work supporting members may be bodily adjusted toward or from the stamping head and independently of the die carrier or it.- actuating mechanism.

The constructional features of the work support above discussed are of importance because they present one form of preferred and satisfactory mechanical means for effecting the desired adjustments, but it is believed that a stamping machine having a transversely movable die has never before been provided with a vertically adjustable work support and this combination broadly constitutes an important feature of the invention. One of the advantages incident to this combination is that the die may be ad justed properly to cooperate with the devices for supplying stamping medium and then the work support may be adjusted in accordance with the path of the die wherever that may be located.

These and other features of the invention will be best understood and appreciated from the following description of a preferred embodiment thereof selected for purposes of illustration and shown in the accompanying drawings, in which Figure l is a view in perspective of the machine; Fig. 2 is a view in side elevation with portions of the work supporting standard in section, and Fig-3 is a fragmentary view of the die carrier with the receptacle for the stamping medium shown in section.

The machine frame 2 is provided with bearings for a horizontal driving shaft 4 having operative connections with an intermediate shaft 6 by which the various elements of the machine are actuated. The

frame has two branches and in the upper of these is provided a vertical guideway for the reciprocatory stamping head 8 which is actuated through the lever 10 and eccentric rod 12 by an eccentric 14 upon the intermediate shaft 6. The stamping head 8 carries a spindle 16 adjustable within the head by means of the hand wheel 18 and carrying at its lower end a cross plate 17. Secured to the plate 17, but spaced from it by a layer of heat insulating material 20, is a bar 22 in which is formed a horizontal undercut guideway. The die carrier 24 is provided with laterally extending flanges which fit into the guideway and hold the carrier against movement vertically relatively to the head 8 while permitting it to be shifted transversely into and out of line with the axis of the head. The die carrier 24 is provided with a pair of electric heating coils 26 by which the die may be maintained at the temperature best suited for the class of work in hand. The layer of insulating material 20, above mentioned, prevents overheating of that portion of the stamping head which slides in the vertical guideway. On its lower face the die carrier has a stationary flange 28 and a movable undercut plate 30 which cooperates with the flange to retain the die 32 in place.

Transverse movement of the die carrier in the guideway is effected by a cam track cut in a disk 34 fast on one end of the shaft 6. In this track runs a roller mounted on the end of a bent lever 36 pivotally mounted within the machine frame near its base and connected by the link 38 to the rear side of the die carrier. The cam track is so laid out that when the machine comes to rest the die carrier occupies an initial position in the rear end of the guideway out of line with the axis of the stamping head and at one side of the work support. When the disk is 1'0- tated in the direction indicated by the arrow in Fig. 2, the die carrier is immediately ad vanced arriving at a position in alinement with the head or plunger 8 when the latter is approximately in mid position. The die carrier is then held against transverse movement during the impression and.until the plunger has reached about the same point in its reverse stroke.

J ournaled in lugs in the machine frame beneath the guideway bar 22 is a horizontal rock shaft 40 to which are secured a pair of arms 42 carrying at their forward ends a receptacle 44 for metallic stamping powder or the like. The receptacle 44 is mounted between the arms 42 upon a transverse pin 45 which carries a roller 46 of felt or other yielding and absorbent material. A bar 48 is yieldingly mounted within the receptacle in the rear of the roller 46 and in this bar are set the bristles of a brush 50. The brush and roller are so disposed that as the die carrier is moved forwardly the die 32 is first wiped across the brush 50 and cleaned of any residue remaining from the previous coating of stamping medium and is then masses drawn over the upper surface of the roller 46 as a result of which a new coating of stamping medium isapplied.

In its normal position the receptacle 44 with the roller and brush is disposed beneath the horizontal path of the die. Any suitable means may be employed for raising the receptacle into operative position and as herein shown the rock shaft 40 is provided with an arm 41 carrying a cam roller which runs against an edge cement in the peri hery of the disk 34 as shown in Fig. 1. he edge cam is so proportioned as to raise the receptacle 44 immediately after the machine is set in operation and to allow the receptacle to be lowered by its own weight into initial position when the die has been moved over the roller 46.

The work supporting members are mounted in the lower branch of the machine frame 2 and are disposed in alinement with the axis ofthe stamping head. The work supporting plate 54 provided with a downwardly proj ecting post 56 and carrying an undercut plate 5.8 and a clamping plate 7 60. The plate 54 has a guideway formed at its center and in the rear end of this guideway is adjustably mounted the plate 58 beveled at its lower front edge to form the overhanging portion shown in Fig. 2. The clamping plate 60 is slidably mounted in the front end of the guideway and has on its lower surface a pair of downwardly projecting lugs which afford connection with a lever 62 by which the clamping plate is moved forwardly and rearwardly. The lever 62 is pivotally connected at its lower end with a horizontal rod 64 encircling which is a compression spring 66 tending normally to swing the lower end of the lever 62 forwardly and move the clamping plate 60 toward the overhanging supporting plate.

58. At its rear end the rod 64 is connected to a radius arm 68 which in turn is connected through the link 7 0 to one arm of a bell crank cam lever 72. The other arm of the bell crank lever 72 carries a cam roller arranged to be operated bythe same edge cam which swings the arm 41 and vcontrols the position of the receptacle 44. The cam roller on the lever 7 2 is so located that when the machine is at restthe rod 64 is pulled rearwardly and the clamping plate moved to its inoperative position but-immediately upon setting the machine in o 'eration the edge cam permits the lever 2 to swing rearwardly and the clamping plate to move inwardly under the actuation of the spring 66 into engagement with the work.

In order to adjust the work supporting members vertically a screw 7 6 is threaded into the post 56 being itself held against vertical'movement by a collar 77 and bevel members comprise a horizontal gear 78 disposed upon opposite sidesof a stationary plate 79 secured to the machine frame. The beveled gear 78 meshes with a gear 80 upon the inner end of a short shaft 82 extending obliquely through the machine frame and provided at its outer end with a square head whereby it may be turned with a Wrench in order to raise and lower the post 56 carrying the work supporting members.

It will be seen that by reason of the pivotal connection of the rod '64 and the link 70 to the radius arm 68, the vertical adjustment of the work supporting element does not interfere with the operative connection between the clamping plate 60 and the cam lever 72 by which its position is controlled.

In order that the clamping plate may be moved away from thework by. the operator, should occasion arise, the radius arm 68 is pinned to a rock shaft 69 which in turn is I provided with an arm v84 connected through a treadle rod 86 to a treadle not shown. When the treadle rod 86 is depressed the rod 64 will be pulled rearwardly and the clamping plate moved forwardly while the cam roller upon the lever 72 is temporarily forced away from its cam.

The initial position of various parts .of the machine is indicated in Fig. 2 and the normal operation of the machine is as fol-- lows: Having made the necessary preliminary adjustments in the stamping head and in the vertical position of the work support, the operator places the work upon the overhanging plate 58 and, if there is anypartially attached portion, such as alining, the edge thereof is deflected by the beveled surface of the plate '58 so that the piece to be stamped lies flatly upon the upper surface of the plate. The machine is then set in operation' whereupon the die carrier 24 is moved forwardly and simultaneously the receptacle 44 is elevated." The die is thus drawnacross the brush 50 and over the surface of the roller 46, turning the latter so that a freshly coated face is brought into position to act upon the die in the subsequent operation. At the same time the clamping plate 60 is moved inwardly, supporting the overhanging edge of the plate 58 and engaging the work, holding it firmly in the position in-which the operator has presented it. Immediately after the die has been coated the receptacle 44 descends to its the axis ofthe stamping head 8 as indicated by the dotted lines'in Fig. 2. The stamping head has meanwhile been'descending and the work is encountered after the die carrier has reached the forward limit of its movement and come into alinement with the axis of the head. The die remains in contact with the work for an interval sulficient to impart a perfect impression and is then elevated while the die carrier is moved rearwardly to its initial position. Meanwhile the clamping plate has been retracted, releasing the stamped work and the latter may be removed from the machine.

and under these circumstances the throw of the shifting lever 36 will be decreased so that the die carrier will be moved rearwardly through a distance substantially equal only to its own width.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. A machine of the class described hav-' ing, in combination, a work support and stamping die movable relatively toward and from each other to effect theimpression and also relatively in a transverse direction whereby work may be presented to the support while the latter is out of alinement with the die, and mechanism arranged to bring the die and support into line transversely prior to the completion of the relative movement in which the impression is efiected and to leave the work support in stamping position and unobstructed when the machine is brought to rest.

2. A machine of the class described having, in combination, a normally stationary work support, a cooperating stamping die,

means for relatively ,moving the support and die toward each other to effect the impression, and means for moving the die transversely after each impression so that it will occupy initial positions out of alinement with the support, said means including a cam and a connecting link disposed entirely in the rear of the die.-

3. A machine of the class described having, in combination, a frame having a Work support and guideways leading toward the support, a head mounted in the guideways for reciprocation toward and from the support, rearwardly extending ways carried'by the head and a die automatically movable in said ways from an initial position at the rear into alinement with and between the head and support prior to the completion of the working stroke of the head.

a. A machine of the class described havmamas ing, in combination, a frame formed with an overhanging arm having vertical guideways therein, a work support. beneath and in line with the guideways, a reciprocatory plunger mounted in said vertical guideways and carrying horizontally disposed guideways extending outwardly from one side of the plunger, and a die automatically movable in the horizontal guideways between successive reciprocations of the plunger and being held against horizontal movement and in alinement with the plunger during the latter part of its working stroke.

5. A machine of the class described having, in combination, a normally stationary work support and a stamping head relatively movable to impress the work, a die carrier transversely movable upon the stamping head from an initial position at one side of the work support into position in line with the work support, and means for effecting such movement of the die carrier prior to the termination of the relative approaching movement of the stamping head and work support and for holding the die carrier transversely stationary during the impression.

6. A machine of the class described having, in combination, a work support and an elongated stamping head guided for movement' relatively to the support to impress the work, a die carried at all times by the head and transversely movable upon the head into and out of stamping position in alinement with the axis of the head, and means for applying a metallic powder to the die while it is out of stamping position.

7. A machine of the class described having, in combination, a work support and stamping head relatively movable to impress the work, a die movable in a trans verse path upon the head, a device for applying metallic powder to the die located at one side of the path of the die, and auto matically acting means for periodically moving said device into the path of the die.

8. A machine of theclass described having, in combination, a work support, a stamping head movable toward and from the support and having a guideway disposed transversely to its path of movement, a die carrier mounted in the guideway, and means, having operative connection with the die carrier in all positions of the stamping head, for moving the die carrier transversely.

9. A machine of the class described having, in combination, a work support, a stamping head movable relatively thereto, a guideway bar connected to the head, heat insulating material interposed between the bar and the head, and a heated die carrier movably mounted in theguideway.

10. A machine of the class described having, in combination, a stamping die movable toward and from position to impress the work, and means for applying stamping medium to the die during its movement in one direction including a roller arranged to be and a roller arranged to be turned in the powder in the receptacle by contact with the movable die. I

12. A machine of the class described having, in combination, a stampin die and receptacle relatively-movable pre iminarily to the impression, and a roller arranged to be turned by contact with the die during such relative movement to coat the die with stamping medium and to present a freshly coated surface for subsequent engagement by the die.

13. A machine of the class described hav-.

ing, in combination, a stamping die and receptacle relatively movable preliminarily to the impression, a roller for transferring a powdered stamping medium from the receptacle to the die during such relative movement, and a cleaning brush arranged to act upon the die before it is coated by the roller to return to the receptacle the powder remaining from the previous impression.

14. A machine of the class described having, in combination, a stamping die, means for applying stamping medium to the die, work clamping means, and a common actu ating device for both of said means.

15. A machine of the class described having, in combination, a stamping die and sup,-

port relatively movable to effect an impression, the die being also transversely movable and the work support including a clamping member movable in a transverse path and having an extended edge for engaging the work. v

16. A machine of the class described having, in combination, a stamping die and support relatively movable to effect an'impression, and automatically acting work clamp- 18. A power operated machine having a stamping head and support relativel movable to effect an impression, and yie dingly acting clamping means'constructed and arranged to be operated during such relative movement.

stamping head, a' support including a p ate with an overhanging edge, andmeansmove'd automatically and yielding'ly into position to reinforce the overhanging edge of the plate and" automatically and positively out of reinforcing position.

20. A machine of the class described having, in combination, a stationary frame, a die, a cooperating work support adjustable in the frame toward and from the die, a

movable plate on the work support, and actuating means mounted in the frame, adapted for moving the plate and having operative connection with the plate in alladjusted positions of the support. 1

21. A machine of the class described having, in combination, a die, a cooperating work support, a movable plate on the support, automatic mechanism for shifting the plate on the support, and separate manually oplerated means for effecting the same resu t. Y

22. An organized machine having, in combination, a stampin die and support relatively movable toe ect an impression, and a work clamping device arranged to be operated automatically prior to the impression of the work by the die.

23. A machine of the class described hav- 1o 19. A power operated machine havin a ing, in combination, a reciprocatory stam ing headcarrying a diemovable transverse y to the path of the head, a device for applylng a stamping medium to the die during itstransverse movement, means for adjusting the location of the transverse path of the die, and a work support adjustable toward and from the'head independently of the applying device.

24. A machine of the class described having, in combination, a reciprocatory head carrying a die movable transversely to the path of the head and adjustable in the direction of movement of the head, means for supplying a stamping medium to the die, and a work support adjustable in a'direction substantially at right angles to the transverse path of the die.

25. machine of the class described having, in combination, a reciprocatory stamping head, awork support located in salinement with the path of the head and having a post secured thereto, an adjusting screw arranged concentrically within the post, and means disposed at one side of the post for turning the adjusting screw.

26. A machine of the class described having, in combination, a driving shaft, an-

amaaoe posed between the cam and clamping device, and a'treadle rod arranged to act at a point in said operating connections between the cam and the clamping device.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

HENRY W. WINTER.

Witnesses CHESTER E. Rooms, LAURA M. Goonmoen.

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