US1373760A

US1373760A - Perforating-machine

Info

Publication number: US1373760A
Authority: US
Inventors: John T Quigley
Original assignee: COSTMETER Co
Current assignee: COSTMETER Co
Priority date: 1916-06-12
Filing date: 1916-06-12
Publication date: 1921-04-05
Anticipated expiration: 1938-04-05

Description

J. T. QUIGLEY. PERFORATING MACHINE.

1,373,760. I APPLICATION FILED JUNE 12, I916. Patented Apr. 5 1921 2 SHEETS-SHEET l.

Iii/v enifo r John) 1!. ,M

QU|GLEY.' j V ATING MACHINE.

APPLICATION FILED JUNE 12 1.9[6- 1,373,760.

PERFOR UNITED STATES PATENT OFFICE.

JOHN T. QUIGLEY, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO COSTMETER COMPANY,

OF BOSTON, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

IERFORATING-MACHINE.

' Specification of Letters Patent.

Patented Apr. 5, 1921.

Application filed June 12, 1916. Serial No. 103,084.

To all whom it may concern:

Be it known that I, JOHN T. QUIGLEY, a citizen of the United States, and a resident of Boston, in the county of Suffolk and State of Massachusetts, (whose post-ofiice address is 282 South street, Forest Hills, Massachusetts,) have invented an Improvement in Perforating-Machines, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention relates to machines for perforating metallic stri and more particularly to machineswhich are capable of perforating continuous metallic strips or tapes as the latter are presented to the machine.

One object of the invention is to produce a rotary machine capable of continuous action on the metallic strip or tape and capable of perforating the same at equi-distant 'oints with a clean shearing cut.

This and other objects of the invention will be best understood by reference to the following description of one specific embodiment thereof when taken in connection with the accompanying illustration, while. its scope will be more particularly pointed out in the appended claims.

In the drawings:

Figure 1 is a plan view of a metallic strip perforating machine embodying one form of the invention;

Fig. 2 is a side elevation thereof;

Fig. 3 is a detail of an exaggerated scale showing the, relation of the punch and die members; i

Fig. 4 is a detail in perspective of one end of the stripping device;

Fig. 5 shows a sectional length of the punched strip;

Fig. 6 is a perspective view showing the strip guide;

. 1g. 7 is a detail illustrating the relation of the punch and die inone position shown on a still further exaggerated Scale;

Fig. 8 is a. similar view showing a subsequent position; and g Fig. 9 is a similar view showing a still later position.

Referring to the drawings and the embodiment of the invention therein illustrated, I have provided the rotary punch wheel 1 consisting of an annular rim rigidly secured at intervals to the gear 2, journaled in bearings 3 on the frame 4. Arranged at equally spaced intervals around the face of the punch wheel 1 is a series of radially pro-. jecting punch members 5 protruding above the surface of the wheel. I These punch members may be secured to the wheel in any desired manner and may be of any required shape, but herein each punch member 5 is in the form of a small, hardened, cylindrical head secured to, and herein integral with, the larger cylindrical carrier 6 fitting each a radial opening in the annular ring 1 and fixedly held in said opening by a set screw 7 entering the face of the ring. By means of the set screw the carrier 6 may be adjusted and the punches caused to protrude the exact dimensions required. By this means also the punches may be taken out and reground from time to time and replaced in the exact relation desired. Preferably the punches 5 project from the car rier 6 for a sufiicient distance to leave a small recess, herein circular in form, surrounding the punch member and underlying the metallic strip, which latter is represented at 8, the perforations being indicated in Fig. 5 at 8". cooperatively arranged with reference to the punch wheel is a die wheel 9, which consists also of an annular ring fixedly secured at intervals to the gear 10 and journaled in bearings 11 also on the frame 4, so that it rotates about an axis parallel with the axis of the die wheel 1 and with its cylindrical surface closely adjacent the surface of the die wheel but separated by a sufficient amount to receive between them 'the thin strip of metal to be perforated. The die wheel has a series of radiall arranged openings 12 in its surface, t e openings being circumferentiallty spaced apart at such distances and of a su ficient diameter to receive the punch members as one wheel is rotated right-handedly and the other left-handedly. Hereln the circumferential spacing of the punch o 4 enings is the same as that of the dies an the wheels are of the same, or approximately the same, diameter. The punch openings are herein of increasing diameter from the outside toward the interior in order to per- In order to make a clean shearing cut as distinct from the mere upsetting of the material, I have found that with a rotary punch and in the case of strip metal, the punch must not only have a small clearance (dependent on the thickness and character of the metal worked upon), but there must be no substantial tendenc to wearing contact between the punch an the edges of the die openings such as would arise from relying upon the punch wheel to rotate the die wheel through the engagement of the protruding punches with the die openings. Herein I have provided positive timing means in the form of the

intermeshing gears

2 and 10 so that the punch wheel and'die wheel are rotated in exact time relation to bring the successive punches into registration with their respective dies. The punch member 5 protrudes above the surface of the punch wheel by an amount sufficient to penetrate and shear the metal and clear the sheared metal from the strip. This, as will be seen from Fig. 8, causes it to enter the die opening by a relatively small amount. By way of illustration, in the case of strip metal .006 inches thick, I have found satisfactory results from a punch having a protrusion of .012 inches, or approximately twice the thickness of the metal. The clearancebetween the punch and die is then preferably selectedso as to insure a clean, shearing cut, but prevent any detrimental contact between the punch and the edges of the die, that is to say, such contact as would tend to interlock the punch with the die or wsar the edges of the die. If the die becomes word through contact, it will no longer provide a clean shearing cut. In the illustrated example above given, in the case of a unch .093 inches in diameter, good results ave been found with a die opening .095 inches in diameter, that is to say, with .001 inches of clearance on each side, or about one-sixth the thickness of the metal.

By. following these principles and relieving the punches of any work except that of shearing the metal, conditions may be secured whereby substantially the same shearing effect may be had by the rolling action of one wheel on the other as in the caseof a the d1e.

plugs 13 are preferably shaped and The action ofthe unch will be clear from Figs. 7, 8 and 9. n Fig. 7 the punch 5 is shown in such position as to have 1penetrated the strip, one edge of the punch aving entered the die opening and the other being on the point of entering the same. In Fig. 8 the punch is shown entered into the die to the fullest extent. In Fig. 9 it is shown as withdrawing from the die. From this it will be seen that each punch pin rolls into the die opening, preferably without substantial interference with the edges thereof, the clearance being sufiicient to permit the die to roll into the opening and out of the same from the position shown in Fig. 7 to that shown in Fig. 9 without substantial contact therewith, the intermeshing gears maintaining the desired'time relation between the two wheels. The shearing edges of the punch and the die are thus caused to roll one into'the other, giving the action of a pair of shears, a clean shearing cut, and clearing the small metallic sheared disk from the strip.

An suitable means for feeding and guiding t e strip metal between the two gears and any suitable means for rotating the wheels may be employed. Herein I have shown a driving wheel 15 secured to the shaft of the gear 2 and such wheel may be driven by the handle 16 or it may be connected to any suitable source of power.

The strip metal 8 may be presented to the machine from any suitable source, such as the reel 18 mounted in suitable bearings at one end of the base 4. the strip passing from the reel 18 to the under side of the die wheel 9 and thence upward between the die wheel and the punch wheel. 7

The tape may be fed through the machine by any suitable means, but herein the enagenient of the punches'with the openings in the ta e'serves to pull the tape through the machine as the punch wheel is rotated.

Preferably guiding means are employed to maintain the correct relation between the strip and the punch wheel, such guiding means being herein embodied in the transversely arranged guide bar 20 adjustably secured to the frame and projecting lateraly therefrom between the punch wheel and die wheel and below the region of their convergence. Such guide bar presents thereat to the strip 8 a guide plate 21 having a bellshaped mouth into which the tape enters and by which it is caused to pass up between the two wheels in such position as to bring the perforations correctly centered.

The strip after being perforated is carried along on the punch wheel 1 and thence to a 4 receiving reel 22, the latter being mounted in bearings at the opposite end of the base 4. The receiving reel 22 is preferably automatically turned to take up the strip material fed it, it'being herein provided with the pulley 23 connected by the driving gear 24 with the pulley 25 on the same. shaft with the gear 2.

In order to insure the stripping of the metal from the punch wheel, the stripping foot or claw 26 may be employed which is secured to the frame of the machine and projects up under the strip '8 and over the periphery of the punch wheel in such po' sition as to overcome any tendency of the strip to stick to the punch members.

The product produced by this machine consists of a smooth, relatively thin and narrow metallic tape having circular holes punched centrally in the tape at uniform distances apart and at distances between the centers greater than the width of the strip, the holes being formed with clean,

smooth edges because of the shearing cut by which they are produced.

While I have herein shown for purposes of illustration one specific embodiment of the invention, it is to be understood that the same is not limited to the constructional details herein shown or to the detailed form or relative arrangement of parts, but that the same may be suitably varied within the spirit of the invention.

Claims:

1. In a machine for perforating metallic strip material, the combination with a r0- tary punch wheel and a rotary die wheel mounted to rotate about parallel axes and with their surfaces closely adjacent but separated by a suflicient amount to receive between them the strip of metal to be perforated, said punch wheel having one or more radially fixed and projecting punch members fixed thereon and protruding above its surface, and said die wheel having radially arranged die openings flush with its cylindrical surface, the openings being spaced apart and of suflicient diameter to receive the punch members with a suitable clearance and said cylindrical surface affording an underlying support for the metal close to the line of shear thereby acting to give a shearing cut t the metal as the two wheels rotate, and said punch members protruding from the surface of the punch cylinder for a sufficient distance to clear the sheared metal from the cut but avoiding substantial wearing contact with the edges of the die opening, means positively to time the rotation of one of said wheels with relation to the other whereby the contact of the punch with the die opening is not relied upon to impart rotative movement from one to the other, and means for presenting the strip metal between the wheels to subject it to the shearing action of the dies.

2. In a machine for perforating metallic strip material, the combination with a rotary punch wheel, a rotarydie wheel, separated from the punch wheel by a clearance space to receive between them a strip of metal to be perforated, said punch wheel having one or more radially projecting punch members and said die wheel having radially arranged die openings, the openings being adapted to receive the punch members with a clearance on each side of substantially one-sixth the thickness of the metallic strip to give a shearing cut to the metal as the two wheels rotate and said punch members entering into the die member for a relatively short distance only, means positively and independently of the punch members to time the rotation of one of said wheels with relation to the other to bring successive punch members and die openings into registration, and means for presenting the strip metal between the wheels to subject it to the shearing action of the dies.

3. A machine for perforating metallic strip material having a rotary punch wheel, a rotary die wheel, separated from the punch wheel by a clearance space to receive between them the metallic strip to be perforated, said punch wheel having one or more radially projecting punch members protruding from the surface of the punch wheel a distance substantially two times the thickness of the metallic strip and said die wheel having similarly shaped, radially arranged die openings adapted to receive the punch members with a clearance on each side of substantially one-sixth the thickness of the metallic strip to give a shearing cut with the metal as the two wheels rotate, intermeshing gears positively to time the rotation of one of said wheels with relation to the other whereby successive punch members are caused to register with the respective die openings without substantial wearing contact therewith, and means for presenting the strip metal to the wheels.

4. In a machine for perforating metallic strip material, the combination with a rotary punch member and a cooperating, r0- tary die wheel adapted to receive between them the strip of metal to be perforated, said punch wheel having radially fixed and projecting punch members protruding above the surface of the wheel but surrounded by a recessed portion of said surface, and said die wheel having radially arranged die openings in its surface, the openings being spaced apart and of sufficient diameter to receive the punch members with suitable clearance, said die-opening surface presenting an underlying support for the metal close to the line of shear thereby acting to give a shearing cut to the metal as the two wheels rotate, and means for rotating the wheels in unison.

5. In a machine for perforating metallic strip material, the combination with a rotary punch wheel and a rotary die wheel,

said punch wheel having fixed thereon one or more radially fixed and pro'ecting punch members consisting each of a ody member adapted to be mounted in the periphery of said wheel, and a punching portion of smaller diameter projecting from said body portion, and said die wheel having radially arranged die openings presenting an underlying supporting surface for the metal close 'to the line of shear to coioperate with said 10 punching portions;

In testimony whereof I have signed my