US2362736A - Rotary intaglio printing press - Google Patents

Description

A. WEISS `2,362,736

ROTARY INTAGLIO PRINTING PRESS Nov. 14, 1944.

Filed May 7, 1943 2 Sheets-SheetA 1 DIP/V4' .SHAFT n E' INVENTOR A0000# W15/S5 Bafwwf ATTORNEY Tia/ Tijll @4mm @wdrl NOV. 14, 1944. l A. wElsS 2,362,736

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CAN 4T lfQU/QL SPffDV CAM ,4T f? P550 INVENTOR Emily ATTORN y Patented Nov. y14, 1944 'UNITED STATES .ROTARY INTAGLIO PRINTING PRESS Adolph Weiss, Brooklyn, N. Y., assignor, by mesne assignments, to Champlain Company, Inc., New York, N. Y., a corporation of New York Original application October 25, 1939, Serial No. K

301,114. Divided and this application May 7, 1943, Serial No. 485,994

s claims. icl. 1411-157) This/invention relates to rotary intaglio printing machines, and particularly to improvements in such machines of the character disclosed in my patents, Nos. Re. 18,856, 2,014,303 and 2,055,272, and in my applications Serial'Nos. 81,409 and 130,672. Th'e present application is a division of my application Serial No. 301,114 filed October 25, 1939 (Patent No. 2,321,342) which is a division of my application Serial No. 211,325, led June 2, 1938 Patent No. 2,217,191).

Among the general objects of this invention are to provide a simplied rotary intaglidprinting machine structure and to provide improved coordination of the parts thereof.

Still further objects are to provide for auto-l matic suspension of operation after a predetermined number of printing cycles, to provide for selective predetermination of such number of printing cycles, and to provide protection for the ink and inkin'g roller during suspensions of operation to thereby maintain the press in operable condition.

Various additional objects will become -evident from the following disclosure of illustrative embodiments of the invention. l

Fig. 1 is a diagrammatic view illustrating the invention. 1`

Fig. 2 is an enlarged scale elevation, partially in section. of a phase change coupling shown in Fig. 1. While this is astructural type of view, the figure is supplementary to diagrammatic Fig. 1. Accordingly the illustration of the coupling may be considered as diagrammatic in its relation to the invention as a whole.

Fig. 3v is a partially` diagrammatic elevation of an adustable cam that 4may be utilized in presses of the present invention.

Figs. 4 to 12, inclusive, arediagrammatic views illustrating some of the variations in printing results that can be achieved with presses embodying the present invention.

The invention, illustrated diagrammatically in Fig. 1, 4is applicable particularly to the specic press illustrated in my application`Serial No. 301,114,-flled October 25, 1939 (now Patent No.

'2,321,342 patented June a, 1943 of which this r is a division. Referring to the drawings, and

particularly .to Fig. 1, the web |45 passes from supply .roll foyer guide roller |1I and between printing cylinder |12 and pressure roller. |14. The printing cylinder is providedwith a completely sealed inkingvsystem |121, of the type disclosed in my Patent. No. 2,217,191. Subsequent to the printing, the web passes between feed rollers |15 and |16, and is delivered between the blades |11 and |18 of-cutting shears. Between the printing cylinder |12 and feed rollers |15, |16, the web may pass over two rollers |19 6 and 80, which are soarranged as to vary the distance which the webl must travel in moving from the printing cylinder to' the cutting shears. The axis of roller |19 is stationary, but roller |80 is rotatably Amounted on a swinging frame |8| whichis pivoted coaxially with roller |19. By swinging the frame |8| and locking it to a sector |82 by set screw |84, the adjustment is made to vary the length of the travel of the web between the printing cylinder |12 and the cutting shears. 15 This adjustment `permits severing off the web at any selected point in the printing cylinder impression.

The various driven elements of the press are mechanically connected together to be actuated 20 from a single source of power indicated as an `electric motor |85. To permit a clear and convenient diagrammatic showing of the operating relationships of the diierent parts, bevelled gears. have been indicated in Fig. 1 of the drawings. 25, However, in actual machine construction, it is preferable to so arrange the parts as to permit the use of spur gears or th'e like. As shown in the v drawings, the motor drives shafts |86 and |86b, which are in effect a singleoshaft. `By means of shaft |81, power is transmitted to the printing cylinder |12 to rotate it at predetermined speed, l which may be the speed of the motor.` A cam |88 `(to be referred to later) is driven in coordination u with the printing cylinder |12 byk power transy mitted to it through shaft |89, phase-change coupling |90, shaft 9 I, variable speed mechanism |92, and shaft |93, which is geared to the drive shaft. At least one of feedrollers |15 and |16 is driven in coordination with the printing cylinder |12, the driving power' being transmitted from the drive shaft' |86b through shaft |94, variable speed mechanism |95, and shaft I 96. The movable blade |11 of the web cutting shears is adapted to bel actuated by camv |91, which is also driven in coprdination with the printing cylinder |12. The piiwer for driving the cam |91 is derived from *the power shaft. |86b through shaft |98, variable speed mechanism |99, shaft 200, phase-changing coupling 20|, and shaft 202.

Pressure roller |14 is rotatably mounted on a pivoted frame203, which is adapted to be rocked by cam |88. When the inactive -(or low) zone of cam |88 isvin contact with roller 204, the 55 pressure roller |14 holds the web |45 in contact with the printing cylinder |12. Accordingly, throughout the inactive zone of vcarri |88 the web is printed with any design which passes the printing zone ofthe printing cylinder |12. However, during the active (or high) zone of cam |88, the pressure roller |14 is elevated, with the result that the web is out of contact with the printing cylinder and no printing play takes provides an adjustment so that the cutting shears may be set to operate at any desired frequency in relation tothe cyclic operation of the machine;- for example, the web may be. severed into lengths corresponding to one, less thln one, or more thanone revolution of printing cylinder |12. Phasechange coupling provides a means whereby the point of severance may be located o'n the web, though a similar location may be effected by' adjusting the position of roller |80. Var-` iable speed mechanism |92 permits the control cam |88 to be rotated at various cyclic rates -in relation'to the rotation of the printing cylinder |12. Also phase-change coupling |90 permits any inactive sector of cam |88 to .be located .in coordination with any selected peripheralzone of the printing cylinder |12.

The press may be so controlled thatupon being set in operation, it automatically stops after v one or more printing cycles (e. g. and cutting one or more slips). This vcontrol may be similar to that shown in Figs. 2 and 5 of my application Serial No. 301,114 (Patent No. 2,321,342, patented June 8, 1943), and is so illustrated in Fig. 1.

A cam 300 is shown as driven from drive shaft. |86a through shaft 30|, variable speed mecha- `nism 302, shaft 303, phase change coupling 304, shaft 305, and shaft 306. Thus cam300 may be set at any phase with respect to the printing cylinder; and for each revolution of the cylinder, it may make one, more than one, or less than one revolution. Once each revolution, cam 300 elevates member |03 and stops the press. The starting and Astopping'of the press is effected by controlling motor |85 and a mechanical and electrical system associated withv member |03'.

This mechanical and electrical system cornprises movable contacts I and |52', which are spring biased away from the stationary contacts l5| and |53, respectively. Pivoted to the press casing (not shown) is a bell crank lever |54,

having a verticalleg adapted to engage contact |52. A spring |54 biases bell crank lever |54 with sufcient strength to overcome the bias of contact |52 and close the same when llever |54 is free to move. A shaft |55 extends across the press cover; and keyed or pinned to the end of the shaft is a bell crank lever |56. This lever is movable to close contact |50, butis biased in the opposite direction by spring |565.

Assume that the machine is in operation, with the printing cycle in progress. The electrical contacts are then in the positions shown in Fig. 1, the circuit to the motor |85 being maintained after rintm i p g 0 driving shaft of the coupling is keyed to a collar '5 205 and the driven shaft is printing by-relay R. The holding circuit for relay R is through connection |60, contact |50, contacts |53 and |52, and connection |6| and switch |64 to the line. At the end of the printing cycle, cam 300 lifts member |03', which moves bell crank lever |54, and permits contacts |53, |52 to open. This breaks the holding circuit of relay R, allowing the relay to open and stop driving motor |85. A

Attached to extension |93 is a latch-engaging hook |62 which moves upwardly with extension |03', allowing latch |63 to advance so that its upper portion engages the end of the horizontal arm of bell crank lever |56. The press is started by rotating shaft |55, thereby moving bell crank lever |56 clockwise to close contacts |50, |5| which complete the circuit to relay R, so that the relay operates and starts the' driving motor |85. Latch |63 is arranged to hold bell crank lever |56 in its operated position, thereby maintaining contacts |50, |5| closed as the press starts to operate. The initial movement of the press causes extension |03 to descend, which allows bell crank lever |54 to rotate and close contacts |52, |53. This restores the original holding circuit for relay R, through connection |60, contact 50, contacts |53 and |52, and connection |6|. Aftercontacts |52, |53 are closed, hook |62 retracts latch |63 and permits bell crank lever |56 to return to its initial position and contacts |50, |5| to open.

When the machine cycle is completed, contacts |52, |53 are again opened and the machine stopped. If it is desired to operate the press continuously, switch |64 is shifted from contact |65 to contact |66, thus connecting the motor |85'for continuous operation.

Fig. 2 shows more clearly the diagrammatic phase-change couplings |90, 20| and 304. The

keyed to an abutting :collar 206. Set screw 201 secures collar 205 to the driven shaft for. the transmission of power.

By loosening the set screw, the driven shaft can be rotated with respect to the driving shaft to change theoperating phase of the part actuated from the driven shaft. To aidin making the adjustment, the contiguous ends of collars 205 and 206 may be provided with a scale and cooperating index as shown in the drawings.

`The control cam for elevating and depressing the pressure roller may be of a suitable adjustable type. One of such type of adjustable cam is shown in Fig. 3. Afxed to the cam shaft is a cam element 2|0 having anactive (or high) zone which extends clockwise from the line s to the line t. Rotatably mounted on the cam shaft is 'a replaceable and adjustable cam element 2|| having an active zone extending clockwise from the line u to the line 1). Attachedto cam shaft 2|2 is a collar 2|3 which holds the adjustable cam element 2|| against the main cam element 2|0. A bolt 208 passes through an arcuate slot 209 in the adjustable cam element and is threaded into the main camelement. The cam roller a: has a face wide enoughto engage both the edge of thepmain cam element 2| 0 and the adjustable cam element 2| I. By setting the adjustable cam element to eiect various degrees of overlap of the active zones of elements 2|0 and 2|I, the effective active and inactive zones of the cam are varied.

Figs. 4 to 12 These figures show afewA of the many printing effects that may be produced by a press such e speed of theY printing cylinder, the cam being indicated 'by graph Ille.

inder passes the printing zone without being printed (due to pressure roller |14, Fig. 1 being elevated), the location of such design with respect to the web is indicated in dot-dash lines in Figs.

For each of Figs. 4 to 12the printing cylinder is the same size, and cam |88 is the same though rotated at various speeds relative to the printing cylinder. In each of these ilgures, one printing cylinder revolution corresponds to the web length between consecutive of the vertical dot-dash lines. However, the location of these lines has nothing to do with the beginning and end of the printed slips (if such are being made) as the web may be so severed as to place the design on any selected part of the slip.

For Fig. 4, the control cam (|88 in Fig. 1) rotates synchronously with the printing cylinder which has one square engraving. The cam action graph |88a indicates that the web is in contact with the printing cylinder during intervals i (ve shown) and out of contact during intervening intervals h. Accordingly, web |45* is printed as shown, with one rectangle per printing cylinder revolution; and the length or the printing cylinder impression is equal to arrow 1400, which is the peripheral length oi' the printing Icylinder.

Tofprint the web |45b shown in Fig. 5, it is only .necessary to so adjust |`the speed of cam |88 that it makes one revolution for. each two revolutions of the printing cylinder. In other words, the claim- 111,185at half the angular speed of the printcylinder.' As indicated by cam graph |88, the design'is printed only every second revolution of. the printing cylinder, so that the printing. cylinder impression is twice the peripheral length` oi the printing cylinder, as indicated by the length of arrow 400|.

FigrfB-shows the effect oi! reducing the angul rn;1-v 1,"zftne web im is' printed the gemelas the 'web in 6'. The printing cylinder impression has the' saine length as indicated by arrow nel. However, lthe result is obtained by reini-- ing the controlv cam at two-thirds the angular action For mines 'a te 12, the printing cylinder nu both square and-circular engravings. Operated in continuous with the web, it would l print ineweb interim in rig. is, the length cylinder impression being indif or a f the m' :mam L Pfeiffer- :capanne-nomia action indicated by graph |881. Thelength of the impression is thatof arrow 4001.

lBy cutting the cam speed in half as indicated by graph |88', Fig. 10, the web |45* is printed. This is the same as web |45", Fig. 5, the length of the printing cylinder impression being that of arrow 4008.

For Fig. 11, the cam is operated synchronously with the printing cylinder as indicated by graph |8811. However, the phase of the cam is shifted 180 degrees from the condition indicated in Fig.

9. Thus, the web |45h is prnted with the clrcular design insteadof the square design. Arrow 400h indicates the length of the impression, which is equal-to the peripheral length of the printing cylinder.

For Fig; 12, the eem' las is slowed te half speed as indicated by, graph |881. The result is that the length of the impression is doubled as indicated by the length of arrow 400i; and web Ais printed with the circular design every second revolution of the printing cylinder.

For these examples, it will be apparent that a variety of effects may be produced by suitably correlating the angular speeds of the control cam and printing cylinders. 'I'hese may be related after the manner of ratios used in hunting tooth gear sets.. Thus, even with a cam speed near to the cylinder speed, the length of the impression may be made' several (or even many) times the peripheral length of the printing cylinder. Also, the same cylinder may have various designs which may be printed selectively or in various chosen combinations.

In compliance with the patent statutes, I have disclosed the best forms in which I have -contemplated applying my invention. However, it will be understood that the disclosures are illustrative and not limiting.

This application is a division of my application Serial No301,114,flled October 25, 1939.

Iclaimz' A i.

1. A rotary prlnting press comprising: a printing cylinder having a peripheral zone free of engravings, a sealed fountain housing sealed to said cylinder, means to start the press, and'.

means to stop the press with said zone of the cylinder in a position outside of said fountain housing whereby the remaining zones of the cyil ing cylinder having a peripheral zone free of engravings, a sealed fountain housing sealed to said cylinder, means to start the press, means to stop the press after a predetermined number of printing cycles with said zone of the cylinder in a position outside of said fountain housing whereby the remaining zones of the cylinder are withinithesealed fountain housing, and means ber ofv printing cycles. v 3. A rotary printing press comprising: a printto vary'saidpredetermination to a different numing cylinder, means to set the cylinder in opera-s tion, means automatically operative to suspend e

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