US1910395A - Rotary punching device - Google Patents

Description

May 23, 1933. J. D. KREIS ROTARY PUNCHING DEVIC Filed Aug. 4, 1951 Kililll NVENTR Jascfh D Kf'ei ATTORNEY@ BY @MMMHMVM Patented May 23, 1933 I UNITEDI STATES PATENT OFFICE.

JOSEPH D. KREIS, F CLEVELAND, OHIO, ASSIGNOR TO BONNAR-VAWTER FANFORM'. COMPANY, INC., OF NEW YORK, N. Y., A CORPORATION 0F DELAWARE ROTARY PUNCHING- DEVICE Application led August 4, 1931. Serial No. 554,995.

forms printed in continuous lengths, such as fanfolded forms for expense bills and the like. Printed forms of the type described are commonly supplied to the user with holes punched through them so that, after a form has been written up in connection with the transaction, such parts of the form as are to be preserved can be bound between covers for filing. It is the object of this invention to provide a machine by which such holes can be punched in a long web of paper with the desired accuracy, cleanness, and rapidity.

In the machine of the invention, the paper web to be punched is led about the surface of a drum or rotor which is rotated by suitable means so as to advance the web at the proper rate of speed. The rotor carries a plurality of punching units which operate during the rotation of the drum and these units are ordinarily arranged in pairs, with one unit at each end of the rotor and the pairs spaced angularly about the rotor a distance corresponding to the desired spacing between the holes to be punched in the web. During the rotation of the rotor, the punching devices move toward each other and across the web so as to overlie the paper to the desired extent. As soon as the devices have reached this position, punch tools forming a part thereof are operated to punch the paper andthen freed therefrom and the devices are then retracted to the ends of the drum so that the paper may be freely removed therefrom without being torn.

With this arrangement it will be seen that the web can be led to the drum without interference and without danger of being torn by the punching devices, the latter having no movement relative to the paper in a lengthwise direction but only moving across the paper to bring the punching tools to proper punching position. When the punching operations are completed, the devices are immediately retracted and there is thus no danger that the paper will be injured by contact with the devices as it is withdrawn from the drum. The machine is capable of adJustment so that it will punch holes in paper webs of different widths and the spacing of the holes both lengthwise and across the web, as well as the size of the holes, may be varied as desired.

For a better understanding of the invention, reference may be had to the accompanyin drawing, in which ig. l is a view in side elevation with parts broken away of the new machine;

Fig. V2 is a sectional view on the line 2-2 of Fig. 1; and

'Fig 3 is an enlarged sectional view of the punching tools and related parts showing the use of spacers between the abutment and the cam housing.

Referring to the drawing the preferred form of the machine is illustrated as including end frame members 10 and 11 in which 70 are supported end plates 12 and 13, respectively. These end plates are supported by means of extending collars which are clamped in the frame members and have bosses 14 and 15 provided with ball bearings 16 for shafts 17 and 18. At their inner ends, the shafts support a rotor generally designated 19. The shaft 18 is hollow and it communicates with the interior of the rotor. Mounted on the shaft 18 is a drive element 2O which .may be either a gear, pulley, or the like and the shaft is connected to the intake of a blower or other suction means, so that the pieces of paper punched from the web and collecting in the interior of the rotor may be continuously removed.

rl`he rotor is provided with a central section 21 of less diameter than the ends 22 and the paper web 23 entering the machine passes beneath a guide roller 24 mounted in the frame members 10 and 11 near their lower ends and then passes upwardly and over the top of the rotor between the enlarged ends thereof. The holes are usually punched in the web at the highest point of its travel and the web moves along with the rotor and is led away beneath another guide roll 25 mounted in the end frame members.

The punching tools employed include radially disposed plates 26 movable in longitu- 100 dinal slots formed in the enlar ed ends" there are three pairs of punches disposed around the rotor at an angular spacing of 120. Each end plate 12, 13 is provided with its cam housing and cam cylinder and the cam tracks in the cam cylinders are so conh structed that the tools are advanced over the\ paper as the paper moves toward the top of the rotor and retracted as the paper moves down from the top on the other side.

Each of the plates 26 has a slot 39 aligned with the surface of the smaller section of the rotor and extending from the inside edge of the plate so that when the plate is moved toward the center of the web of paper, the slot will receive the paper. vNear the leading edge of the slot in the upper arm formed ment 36 mounted at the inner end of each cam is the corresponding female die 40.

The male die 32 is operated by an abutment 36 mounted at the inner end of each cam housing and held in place by a bolt 37 and spaced from the inner end of the cam housing by spacers 38. This abutment member lies directly over the punch 32 when the tool plate 26 is moved to its innermost position and as the punch passes beneath the Labutment, the latter forces the punch down so that it passes through the paper. The cam cylinders 29 may be changed to change the distance between the edge of the paper and the holes to be punched and in order to make the abutment 36 overlie the male die it is spaced from the cam housing by spacers or shims 38.

The die is positively withdrawn from the paper by a lever 33 pivoted at 34 in a slot in the top of the plate 26. The lever has an upwardly` projecting end 35 extending out of the slot. A cam face on the cam 29 operates this lever at the appropriate time.

In the approachlng movement of the tools to bring the punches into proper relation to the webs, the inner ends of the tools move out of the slots in the enlarged ends of the rotor and each tool plate advances over the paper web to bring its punch into proper position. Directly below the lower end of the female die there is an opening 41 formed in the rotor so that the pieces of paper punched from the web may pass into the interior of the rotor and be withdrawn by suction.

In the operation of the machine, the web passing around the guide roller comes into contact with the surface of the rotor at about the point 42. At this point in the travel of the rotor, the tools 43 which lie below the point 42 are fully retracted into their slots.

As the rot-or advances, the tools are forced toward each other byengagement of their rollers in the cam tracks but thek tools do not pass out beyond the ends of their slots inthe enlargedheads ofthe rotor until the tools have passed beyond the point 42 wherethe web is in contact with the surface of the rotor. The tools are advanced to the proper position relative to the web by the cams'and the shape of the cam track determines the spacing ofthe holes inward from the edges of the paper. Accordingly Vdifferent cams are used in the machine, depending on the transverse spacing of the holes. When the tools 43 reach the topmost point in the travel of the rotor, they have also reached the end of their inward travel andl the male dies are forced down by the action of the abutments 36. The cam cylinder is provided with a cam recess 44 to receive'the projecting end 35 of lever 33 which has been rocked by the downward movement of the punch 32, but as soon as the punch passes from lbeneath the abutment 36, the cam slot 44ji`s shaped to force the projecting end 35 of lever 33 downwardly, rocking the lever so as to move the punch upward and out of the hole which e has been punched in the paper. The punch is maintained at its high point until the rotor makes another complete rotation. As soon as the tools have completed their punching operation, they are withdrawn into their slots, so that by the time they have advanced to the point 45, they are fully retracted and free of the edges of the paper. In the further e rotation of the rotor, the paper with the holes 46 punched therein is free to leave the surface ofthe rotor and passes down and .around the guide roller 25 and leaves the machine.

In the machine illustrated, there are three pairs of tools and the distance lengthwise of the paper between pairs of holes depends on the size of the rotor. The rotor may be pro.-

vided with any number of slots desired and the tools will be placed in the slots in accordance with the spacing that the holes are to have lengthwise of the web. By proper selection of cam cylinders, the spacing o the holes transversely of the web may be adjusted as desired. When necessary additional spacers 38 will be inserted between the ends of the cam housing and the cam plates 36 in order to place the cam plates 36 in the desired position to operate the punches.

It will be seen that in the new machine, the punching devices are kept clear of that part of the rotor about which the paper is led until after the paper is in contact with the rotor. Thereafter, the punching devices which are moving angular-ly at the same rate of speed as the paper are moved across the paper to bring the punches. in proper position, the punches are then operated and retracted and the devices move backand away from the paper. The movement of the devices into and out of operative position takes place at a high rate of speed but under positive control so that although the paper passes rapidly through the machme, there is no danger of the paper being torn by contact with the punches as the paper approaches or leaves therotor. Also, at the time the punching tools pass through the paper, the tools and paper are traveling angularly at the same rate of speed so that there is no danger of the tools being distorted and the tools make a sharp clean-cut, with the punched out portions of the paper passing into the rotor and being continuously drawn olf.

l claim:

1. A rotary .punching device which comprises the combination of a rotor, means for moving a web of paper into Contact with the surface of the rotor to be advanced therewith, punching devices mounted in the surface of the rotor for movement longitudinally thereof, means for advancing the punching devices into position relative to the edges of the paper, means for operating the punching devices while inthe latter position, and means for retracting the v punching devices by a movement longitudinally of the rotor.

2. A rotary punching device which comprises the combination of a rotor, means for directing a web of paper into contact with the surface thereof to be advanced with the rotor and at the same speed, a punch device including male and female members Imounted on said rotor and movable in a direction parallel to the axis thereof, and means for actuating said punching means to punch the paper while the paper is being advanced in contact with the rotor.

3. A rotary punching device which comprises a rotor, means for rotating said rotor, means for directing a web of paper in contact with the surfaces of said rotor, punch means on said rotor and movable from a position beyond the edge of the paper in contact with the rotor to a position in which said means overlies the paper, means for advancing and retracting said punch means with respect to the paper, and means for operating the punch means to punch the paper while said means overlies the paper.

4. A rotary punching device which comprises a rotor, means for rotating said rotor, means for directing a Web of paper into contact with the surface of said rotor to be advanced therewith, punch means mounted on said rotor and movable laterally over the edges of said paper, a cam mechanism for moving said punch means laterally With-` respect to said paper.

' 5. A rotary punching device which comprises a rotor, means for rotating said rotor, means for directing a web of paper into contact with the surface of said rotor to be advanced therewith, punch means on said rotor normally lying outwardly beyond the edge of said paper, means for moving .said punch means inwardly over the edge of said paper and retracting said unch means to a osition beyond the edge o said paper, an means for actuating 'said punch means to punch the paper, said actuating means including an abutment with which said punch means contact during its travel.

6. A rotary punchin Adevice which comprises a rotor, means or rotating said r0- tor, means for directing a web of paper into contact with the surface of said rotor to be advanced therewith, punch means on said rotor normally lying outwardl beyond the edge of the paper, means for a vancing said punch means inwardly over the edge of said paper and withdrawing it to a position beyond the edge of said paper, and means for actuating sald punch means to punch the p aper and to move clear of the latter, said actuating means including an abutment for effecting one movement of the punch means, and cam mechanism for effecting the other.

7 A rotary punching device which cornprises a rotor, means for rotating said rotor, means for directing a web of paper into contact with the surface of said rotor, to be advanced therewith, punch means mounted on said rotor and longitudinally movable relative to said roller, and cam means for moving said punch means lengthwise of said roller alternately in opposite directions.

8. A rotary punching device which comprises a rotor, means for rotating said rotor, means for directing a web of paper into contact with the surface of said rotor, to be advanced therewith, punch means mounted on said rotor and longitudinally movable relative to said rotor, said punch means including relatively movable punching elements, cam mechanism for moving said punch means alternately in opposite directions lengthwise of said rotor for effecting relative movement of said punch elements to cause said elements to punch the paper and to be retracted therefrom.

9. A rotary punchin device, which comprises a rotor, means or guidin a web of paper into contact with the sur ace of the rotor to be advanced therewith, a punching device mounted on the rotor and movable in the direction of the axis of the rotor from a position beyond the edge of the paper to a position in which portions of said punching device overlie the paper, punching elements carried in said portions, means for moving said punching means from one position to another, and' means for actuating the punching elements while said punching elements overlie the paper.

10. A rotary punching device, which comprises a rotor, means for directing a web of paper into contact with the rotor to be advanced therewith, a punching device mounted in the rotor and movable in a direction in the paper and to move away from the a er.

p f1. In a rotary punching device, the combination of a rotor having slots in the surface thereof extending in the direction of the rotor axis, a punching device in one of said slots movable lengthwise of said slot, means for positively moving the punching devices in said slot, and means operable when the punching device is at one end of its travel for Y causing the punching device to operate.

12. In a rotary punching device, a 'rotor having a paper-receiving portion and a circumferential portion at one side of said paper-receiving portion of greater diameter than the latter, a slot formed in the surface of the rotor and extending in a direction parallel to the axis of the rotor, a punching device mounted in said slot, said device including cooperating punching elements, and means for moving said device lengthwise 0f said slot and means for causing said co- ,n

operating elements to perform their punching function.

13. In a rotary punching device, a rotor having a paper-receiving portion and a circumferential portion at one side of said paper-receiving portion of greater diameter than the latter, a slotl formed in the surface of the rotor and extending in a direction parallel to the axis of the rotor, a unching device mounted in said slot, said device including cooperating punching elements, said device being movable in its slot to position to cause them to punch said paper and be retracted therefrom.

15. lA rotary punching device, which comprises a rotary drum having a surface for receiving a piece of paper to be punched, a punching device mounted on said drum and movable lengthwise of the latter, said punching device carrying spaced cooperating punching elements, cam means for moving said punching device toward and away from said paper-receiving surface to positionthe elements thereon on opposite sides of a piece of paper on said surface, said cam means including a caml housing into which the end of the drum projects, and means carried by said housing for actuating said cooperating elements toV punch a iece of paper between them and to retract said elements -from the paper.

In testimony whereof I aix my signature.

JOSEPH D. KREIS. v

said cooperating elements onppposite sides of a piece of paper on said paper-receiving surface, means for moving said device in said slot, and means operable when said elements lie on opposite sides of said piece of paper to cause said elements to punch said paper and be retracted therefrom.

14. In a rotary punching device, the combination of a rotary drum having a surface to receive a piece of paper to be punched, a punching device mounted on the surface of the drum and movable in a direction lengthwise of the latter, said punching device having spaced cooperating punching'elements, means for moving said device toward and away from the paper-receiving-surface to po- V sition said elements on opposite sides of a piece of paper, the edge of said paper entering the space between said elements, and means for actuating said punching elements CERTIFICATE OF CORRECTION.

Patent No. 1,910,395. I May 23, 1933.

JOSEPH D. KREIS.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 2, line 25, strike out the syllable and words "ment 36 mounted at the inner end of each cam" and insert instead "thereby is a maledie 32 and in the lower arm"; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 27th day of June. A. D. 1933.

M. J, Mooi'e.

(Seal) Acting Commissioner of Patents.

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