EP0377857B1 - Dispositif électrique de sécurité d'un système d'accouplement de tambour de transfert de feuilles dans une presse - Google Patents

Dispositif électrique de sécurité d'un système d'accouplement de tambour de transfert de feuilles dans une presse Download PDF

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Publication number
EP0377857B1
EP0377857B1 EP89123271A EP89123271A EP0377857B1 EP 0377857 B1 EP0377857 B1 EP 0377857B1 EP 89123271 A EP89123271 A EP 89123271A EP 89123271 A EP89123271 A EP 89123271A EP 0377857 B1 EP0377857 B1 EP 0377857B1
Authority
EP
European Patent Office
Prior art keywords
actuating member
tension rod
spring
rotation
sheet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP89123271A
Other languages
German (de)
English (en)
Other versions
EP0377857A3 (fr
EP0377857A2 (fr
Inventor
Willi Becker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0377857A2 publication Critical patent/EP0377857A2/fr
Publication of EP0377857A3 publication Critical patent/EP0377857A3/fr
Application granted granted Critical
Publication of EP0377857B1 publication Critical patent/EP0377857B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines
    • B41F21/10—Combinations of transfer drums and grippers
    • B41F21/106—Combinations of transfer drums and grippers for reversing sheets, e.g. for perfecting machine

Definitions

  • the invention relates to a device for electrically securing a clamping device in a sheet guiding drum of printing presses with generic features according to the preamble of claim 1.
  • Such electrical protection is known from DE-OS 36 11 325 in a reversing drum of a printing press for perfecting.
  • the actuator can then be screwed onto the external thread of a tension rod with an internal thread, which acts with a flange-like thickening on the clamping lever of a clamping device for locking a toothed ring with a gear wheel of the reversing drum, this tension rod being permanently loaded in the clamping direction by a spring, of which the clamping forces go out and against whose effect the clamping device can be released.
  • the actuating member is screwed onto the thread of the tension rod, wherein it first moves in an idle way in a first section and thereby actuates a switching member for an electrical switch, which is located in the supply circuit for driving the printing press. This is done via a rocker bearing of the switching element, which engages with one end in a circumferential groove of the axially movable actuating element and acts on the electrical switch with the other end.
  • the actuating member comes axially displaceable against one end of the tension rod enclosing sleeve to the system, so that the tensioning rod is pulled through the sleeve when the actuator is screwed further, thereby compressing the spring so that the spring relieves the clamping lever.
  • a screwing movement of the actuating member in the opposite direction initially leads to a partial relaxation of the spring, so that the spring brings the clamping device back into function before the electrical switch in the circuit of the machine drive is closed again on the further screwing path in the region of the idle path which is ineffective on the clamping device.
  • the object of the invention is to develop such a device with an electrical fuse in such a way that a movement of the actuating member between the stop positions should be possible by more than 360 degrees and the tension rod can be axially displaced in any length by turning the actuating member without a stop hindering this movement.
  • the invention solves this problem by training with features according to the characterizing part of patent claim 1.
  • stop is pushed into its operative position only towards the end of the axial movement of the tensioning rod, from which it is immediately withdrawn when the actuating member is rotated in the opposite direction.
  • the embodiment shows the features of the invention on a sheet guide drum with an inner shaft 1 made of solid material and outer drum parts with at least one segment 2 that is adjustable in the circumferential direction relative to the inner shaft 1.
  • an inner shaft 1 made of solid material
  • outer drum parts with at least one segment 2 that is adjustable in the circumferential direction relative to the inner shaft 1.
  • An arch contact surface is formed on the lateral surface of this segment. It can also be used with suction nozzles or other devices for smoothing sheets or for Be provided with sheet gripping.
  • This segment 2 can be firmly locked to the inner shaft 1 by a clamping device.
  • the inner shaft 1 is supported at both ends with trunnions 3, which are formed in one piece with the shaft from solid material, in the side walls 4 of the machine frame and can be driven by a gear wheel 5, which is distributed outside the machine frame with the end face of the shaft 1 by several arranged screws 6 is connected.
  • a plurality of friction elements 7 on a surface 8 of the segment 2 extending radially, as close as possible to the side wall 4 are packet-shaped with a spacing from one another in the manner of a multi-plate clutch for example by means of screws 9.
  • a complementary package of friction elements 10 is fastened to a likewise radially extending surface of an abutment 11 connected to the bearing journal 3 or directly to the shaft 1, for example by means of screws 12, the friction elements 7 layered with intermediate layers of the same thickness and those with the same Interlayer layered friction elements 10 interlock and overlap in a certain area.
  • the friction elements 7 fastened to the segment 2 and the friction elements 10 fastened to the abutment 11 can be braced axially against one another between the abutment 11 and a second abutment 14 on the shaft 1, so that by increasing the friction surfaces between the friction elements 7 and 10 high frictional forces arise even with a relatively low clamping force for bracing.
  • the example shows three friction elements in one package, so that there are seven friction surfaces in the overlap region 13.
  • the friction elements 7 and 10 are also segment-shaped, so that they are only part of the circumference in the side view extend, as can be seen from Figure 2.
  • the abutment 11 is formed in the example by a ring segment which is fastened on the bearing journal 3 of the shaft 1 by means of screws 15 and is additionally axially supported against a support ring 16 or the like.
  • the clamping device has a clamping lever 17, which is arranged in a lateral recess 18 of the shaft 1 and is effective therein as a rocker with lever arms of unequal length.
  • This clamping lever 17 is supported in the vicinity of its outer end against the abutment 14 and presses with a pressure block 19 in the overlap area 13 against the inside of the radial part of the segment 2 opposite the surface 8, so that the compressive forces parallel to the longitudinal or respectively.
  • Central axis 20 of the shaft 1 are effective. In the direction of the shaft axis 20, the end face of a tension rod 21 presses against the other end of the clamping lever 17 and is permanently spring-loaded in the clamping direction.
  • This tensioning rod 21 is arranged centrally or eccentrically in a recess 22 arranged parallel to the shaft axis 20 and with the opposite end is led out of the bearing journal 3 of the shaft 1 at the end.
  • the tension rod 21 has a radial flange 23 which is penetrated by a screw 24 at least at one point, which secures the tension rod 21 against rotation without obstructing its axial displaceability.
  • a spring assembly 25 for example made of disc springs, is arranged, which is supported on the one hand against the radial flange 23 and on the other hand against the inside of a bell housing 26, which by the screw 24 and other screws, not shown in the drawing, with the end face of the journal 3 is firmly connected.
  • the gear wheel 5 has a central recess which enables the housing bell 26 to pass through.
  • the spring 25 Tension rod 21 constantly pressed against the inner end of the clamping lever 17, so that the spring forces are multiplied via this clamping lever 17 and transmitted to the friction surfaces of the friction elements 7 and 10. So that the clamping force between the friction elements is dependent solely on the spring force of the spring 25 and not on operating forces.
  • the free end of the tension rod 21 is guided through the bottom of the bell housing 26 to the outside and here connected to an actuator 27.
  • the example shows a thread on the outer end of the tensioning rod 21, onto which an internal thread of the actuating member can be screwed, which interacts with a device for electrically securing the clamping device.
  • the actuating member 27 is screwed onto the thread of the tensioning rod 21, starting from the clamping position, initially on an empty path which is intended for actuating the electrical fuse.
  • a switching element 28 is shown, which is mounted on the machine as a rocker arm and engages with one end in a circumferential recess 29 on the actuating element, while the other end acts against an electrical switch 30, a spring 31, the switching element 28 in the direction of the starting position before it Movement burdened. Only after the free travel does the actuating member 27 come into contact with an axial roller bearing 36 on the outside of the bell housing 26, so that the tensioning rod 21 is axially displaced to the left in the plane of the drawing when screwing is continued.
  • the end positions for the movement of the actuator 27 are limited by stops 32 and 33a and 33b, which are designed so that they also define the free travel for switching the electrical protection.
  • the tensioning rod 21 moves the stop 33b, which limits the rotation when the clamping device is released, at the end of its axial movement into its operative position.
  • the axial overlap of the radially effective stop 32 with the stops 33a and 33b in the stop positions is smaller than the pitch of the thread on the free end of the tension rod 21 or in the actuating member 27.
  • a stop 32 is provided on the cam Actuator 27, wherein this cam has two stop surfaces, one of which is effective in each direction of rotation, and counter-stops 33a and 33b on rotationally fixed machine parts which are spaced from one another in the axial direction of the tension rod or shaft and are axially displaceable at the outer end one in the bell housing 26 axially movable bolt 34 are arranged, the inner end of which is supported against the radial flange 23 of the tension rod 21.
  • the stop 32 on the actuating member 27 several turns of the actuating member 27 to achieve a sufficiently long Can perform free travel for the actuation of the electrical fuse and can also be rotated in order to allow an axial displacement of the tension rod 21 against the action of the spring 25 to release the clamping device before the stop 32 comes into contact with the stop 33b in the end position when the clamping device is released.
  • the stop 33b is slightly axially displaced by the bolt 34, starting from the axial movement of the tensioning rod 21, so that it engages in the turning circle of the stop 32.
  • FIG. 4 shows the contact with the stop when the clamping device is released.
  • a motor-driven actuating member can also be provided for the tension rod 21.

Landscapes

  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Rotary Presses (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Transmission Devices (AREA)
  • Clamps And Clips (AREA)

Claims (5)

  1. Dispositif coupe-circuit électrique d'un mécanisme d'embrayage placé dans un tambour de transfert de feuilles de machines à imprimer, dans lequel un organe de manoeuvre (27) du mécanisme d'embrayage comporte un taraudage et peut se visser axialement entre des positions extrêmes en actionnant alors sur une première partie de son mouvement un organe (28) de commutation d'un interrupteur électrique (30) placé dans le circuit d'alimentation en courant de la commande de la machine à imprimer et en agissant lors d'une deuxième partie de son mouvement sur des organes intermédiaires qui serrent l'une contre l'autre au moins une surface de friction placée sur le tambour de transfert de feuilles et une surface de friction placée sur une partie (2) du tambour du transfert de feuilles qui est déplaçable dans la direction de la circonférence, les positions extrêmes étant délimitées par des butées qui agissent dans la direction de la rotation de l'organe de manoeuvre (27) et qui se composent d'une came (32) placée sur l'organe de manoeuvre (27) et de deux cames (33a, 33b) placées sur un élément de la machine qui est immobile en rotation, chacune des deux cames (33a, 33b) immobiles en rotation étant affectée à une position extrême et étant placées l'une par rapport à l'autre, dans la direction du déplacement axial de l'organe de manoeuvre (27), à une distance qui est supérieure au pas du taraudage de l'organe de manoeuvre (27) et le recouvrement axial de la came (32) placée sur l'organe de manoeuvre et de l'une des deux autres cames (33a, 33b) en position de butée étant plus faible que ledit pas du taraudage, caractérisé en ce que l'organe de manoeuvre (27) peut se visser sur une barre de rappel (21) montée mobile axialement dans le tambour de transfert de feuilles, soumise à un ressort (25) dans le sens du serrage et empêchée (24) de tourner, cette barre de rappel (21) agissant, lors d'une deuxième partie du mouvement de l'organe de manoeuvre (27), sur les organes intermédiaires qui transmettent la force du ressort, en ce que la came de butée (33b) immobile en rotation et affectée au mécanisme d'embrayage desserré est montée déplaçable parallèlement à la barre de rappel (21) et en ce que cette barre de rappel (21) déplace à la fin de son mouvement axial la came de butée (33b) pour la mettre en position opérationnelle à l'encontre de la force du ressort (25).
  2. Dispositif selon la revendication 1, caractérisé en ce que les deux cames (33a, 33b) montées immobiles en rotation sont fixées à l'extrémité extérieure d'une tige (34) guidée dans un logement en cloche (26) se vissant sur la surface extrême du tambour de transfert de feuilles, l'extrémité intérieure de cette tige prenant appui axialement sous l'effet de la force d'un ressort (35) contre une bride radiale (23) de la barre de rappel (21).
  3. Dispositif selon la revendication 2, caractérisé en ce que le logement en cloche (26) est conformé en module préalablement assemblé avec la barre de rappel (21) soumise dans le sens du serrage à la force d'un ressort que contient ce logement, avec l'organe de manoeuvre (27), avec la butée de ce dernier qui en délimite la course et avec l'organe de commutation (28) du coupe-circuit électrique (30), ce module se fixant par des vis (24) sur la surface extrême de l'arbre (1).
  4. Dispositif selon la revendication 3, caractérisé en ce que l'organe de manoeuvre (27) prend appui lors de son mouvement axial sur la seconde partie du taraudage contre un roulement de butée axiale à rouleaux (36) disposé dans la cloison extrême du logement en cloche (26).
  5. Dispositif selon la revendication 4, caractérisé en ce qu'au moins une des vis (24) de fixation du logement en cloche (26) sur la surface extrême du tambour de transfert de feuilles passe librement à travers une bride radiale (23) de la barre de rappel (21) et empêche celle-ci de tourner.
EP89123271A 1989-01-13 1989-12-15 Dispositif électrique de sécurité d'un système d'accouplement de tambour de transfert de feuilles dans une presse Expired - Lifetime EP0377857B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3900820 1989-01-13
DE3900820A DE3900820C1 (fr) 1989-01-13 1989-01-13

Publications (3)

Publication Number Publication Date
EP0377857A2 EP0377857A2 (fr) 1990-07-18
EP0377857A3 EP0377857A3 (fr) 1991-04-03
EP0377857B1 true EP0377857B1 (fr) 1994-06-01

Family

ID=6371998

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89123271A Expired - Lifetime EP0377857B1 (fr) 1989-01-13 1989-12-15 Dispositif électrique de sécurité d'un système d'accouplement de tambour de transfert de feuilles dans une presse

Country Status (8)

Country Link
US (1) US5069126A (fr)
EP (1) EP0377857B1 (fr)
JP (1) JPH0790633B2 (fr)
AU (1) AU627247B2 (fr)
CA (1) CA2003824C (fr)
DE (2) DE3900820C1 (fr)
DK (1) DK9690A (fr)
ES (1) ES2054999T3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4131273C1 (fr) * 1991-09-20 1992-12-10 Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De
DE4223189C3 (de) * 1992-07-15 2003-04-03 Heidelberger Druckmasch Ag Vorrichtung zur ferngesteuerten Betätigung von Klemmorganen einer Wendeeinrichtung
JP2602137Y2 (ja) * 1993-11-08 1999-12-27 株式会社小森コーポレーション 反転機構付枚葉輪転印刷機の印刷切替装置
JP2008142905A (ja) * 2006-12-06 2008-06-26 Shinohara Machinery Co Ltd 枚葉印刷機の爪座機構

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1453957A (en) * 1973-08-23 1976-10-27 Girling Ltd Disc brakes
US4138006A (en) * 1977-10-31 1979-02-06 Paragon Gears Incorporated Power transmission of the interleaved, multiple friction plate clutch type
JPS5871162A (ja) * 1981-10-24 1983-04-27 Komori Printing Mach Co Ltd 反転機構付枚葉輪転印刷機の位相調整装置
DE8319431U1 (de) * 1983-07-06 1984-02-16 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Vorrichtung zur umstellung auf wahlweisen schoendruck oder schoen- und widerdruck einer zwischen den einzelnen druckwerken einer bogenrotationsdruckmaschine angeordneten wendeeinrichtung
DE3534488A1 (de) * 1985-09-27 1987-04-16 Koenig & Bauer Ag Kupplung in einer bogenrotationsdruckmaschine
DE3534486A1 (de) * 1985-09-27 1987-04-16 Koenig & Bauer Ag Kupplung in einer bogenrotationsdruckmaschine
DE3611325A1 (de) * 1986-04-04 1987-10-08 Heidelberger Druckmasch Ag Vorrichtung zur verstellung der relativen drehlage zwischen einem zahnrad und einem mit diesem gleichachsig gelagerten zahnkranz
JPH0667615B2 (ja) * 1986-04-21 1994-08-31 株式会社小森コーポレーション 反転機構付枚葉印刷機の吸着部材固定装置
US4831929A (en) * 1987-10-21 1989-05-23 Komori Printing Machinery Co., Ltd. Suction member fixing apparatus for sheet-fed printing press with turn-over mechanism
US4924988A (en) * 1989-01-19 1990-05-15 Tecumseh Products Company Clutch

Also Published As

Publication number Publication date
EP0377857A3 (fr) 1991-04-03
CA2003824A1 (fr) 1990-07-13
DE3900820C1 (fr) 1990-05-10
US5069126A (en) 1991-12-03
DK9690A (da) 1990-07-14
CA2003824C (fr) 1994-07-26
DK9690D0 (da) 1990-01-12
ES2054999T3 (es) 1994-08-16
DE58907781D1 (de) 1994-07-07
JPH0790633B2 (ja) 1995-10-04
JPH03178437A (ja) 1991-08-02
AU627247B2 (en) 1992-08-20
EP0377857A2 (fr) 1990-07-18
AU4591089A (en) 1990-07-19

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