EP0679593B1 - Rouleau à mouvement cadencé pour transporter des feuilles dans un machine d'impression - Google Patents

Rouleau à mouvement cadencé pour transporter des feuilles dans un machine d'impression Download PDF

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Publication number
EP0679593B1
EP0679593B1 EP95104641A EP95104641A EP0679593B1 EP 0679593 B1 EP0679593 B1 EP 0679593B1 EP 95104641 A EP95104641 A EP 95104641A EP 95104641 A EP95104641 A EP 95104641A EP 0679593 B1 EP0679593 B1 EP 0679593B1
Authority
EP
European Patent Office
Prior art keywords
roller
shaft
sheet
clock
rotatably mounted
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
EP95104641A
Other languages
German (de)
English (en)
Other versions
EP0679593A1 (fr
Inventor
Martin Greive
Günter Zobl
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 EP0679593A1 publication Critical patent/EP0679593A1/fr
Application granted granted Critical
Publication of EP0679593B1 publication Critical patent/EP0679593B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/06—Feeding articles separated from piles; Feeding articles to machines by rollers or balls, e.g. between rollers
    • B65H5/062—Feeding articles separated from piles; Feeding articles to machines by rollers or balls, e.g. between rollers between rollers or balls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/10—Size; Dimensions
    • B65H2511/13—Thickness

Definitions

  • the invention relates to a device for transporting sheets into a sheet processing machine according to the preamble of the main claim.
  • the uppermost sheet of a sheet stack in the area of the leading edge is grasped by means of a suction rod, separated, lifted between a clock roller and a transport roller and from there guided to the grippers of a cylinder of the sheet processing machine via a sheet guiding device.
  • the clock roller is either a roller with a continuous axis that carries rubber rings at defined intervals, or individual rollers that are rigidly attached to a clocked axis.
  • the timing itself takes place in such a way that the timing roller touches the transport roller when the sheet is taken over by the suction rod and is lifted off the transport roller as soon as the grippers of the cylinder have gripped the sheet. The latter means that the bow can be taken freely by the grippers.
  • the clock rollers work at a higher speed than the printing press speed. This increased speed is required so that the sheet can catch up with the gripper stops and thus be correctly aligned with the gripper stops.
  • the suction speed and the speed of the Transport rollers must be optimally coordinated.
  • Optimal sheet guidance can only be achieved if the suction cups can pivot into the working area of the clock roller during the swiveling movement carried out in the sheet conveying direction.
  • this is not possible, so that an optimal coordination between the clocking of the suction cups and the clocking of the clock roll must be avoided.
  • Sheets of different formats and different quality are processed in a printing press.
  • Document FR-A 2 318 090 shows a device for transporting sheets in a sheet-processing machine, which is arranged on a clocked shaft and can be pressed onto a transport shaft with an adjustable contact pressure, the device having a rotatably mounted roller which is adjustable in height and is axially displaceable.
  • Document US-A 1,910,506 also shows a generic device for transporting sheets to a sheet-processing machine, which is arranged on a clocked shaft and can be pressed onto an transport roller with an adjustable contact pressure, the device having a rotatably mounted roller that is height-adjustable and is axially displaceable.
  • the object of the invention is to propose a cycle roll, which ensures the supply of sheets of various types and formats to the sheet-processing machine.
  • the clock roller is a rotatably mounted element that is attached to a height-adjustable element.
  • the rotatably mounted element is a ball bearing with a spherical rubber coating.
  • the sheet transport can be optimized in that the coating consists of an elastic material that has a high coefficient of friction; in addition, the material should be wear-resistant and not very color-accepting.
  • All clock rollers have a defined zero position. This is the setting in which the spherical rubber coating of the roller is compressed so that the diameter of the roller decreases by a certain amount. Depending on the type of paper to be processed, the height-adjustable element is adjusted by defined amounts.
  • the height-adjustable element is a spring plate with a predetermined bending line.
  • the bending line of the spring plate is calculated so that the contact pressure can be changed within a defined range. In particular, this area is selected so that all types of paper to be processed are easily transported into the printing press.
  • the height-adjustable element consists of two levers, the clock roller being adjustable to the desired pressure via a pivot point and a compression spring.
  • This embodiment is to be seen as an equivalent embodiment to the prestressed spring plate.
  • a wide variety of formats are printed in a sheet-processing machine, in particular in a printing press.
  • the individual clock rollers are slidably mounted on a shaft.
  • the axial adjustment of the clock rollers can be of great advantage if papers that have already been printed are to be fed again to the sheet-processing machine.
  • the individual clock rollers can be set to pressure-free areas according to this advantageous development of the invention.
  • catch recesses are provided on the shaft in defined positions; at least one corresponding latching mechanism is provided on each clock roller.
  • the latching mechanism is a ball latch, which latches in the position of the latching recesses when the clock roller is moved.
  • the cycle roll or cycle rolls are firmly connected to the axis during sheet feeding.
  • the following is provided as a quickly detachable fastening device for the cycle roller: a pin is pressed into a notch in the shaft in a position defined by the catch recesses by means of a toggle screw.
  • the cycle roller can also be fixed on the shaft by means of a quick-release device.
  • the settings of the various clock rollers can be carried out parallel and evenly to the transport roller. This is particularly important, since optimal sheet guidance can only be achieved with the same contact pressure of all cycle rolls.
  • a scale is attached to the set screw, for example, which assigns a defined height adjustment of the rotatably mounted roller to an angle of rotation of the set screw.
  • a locking element or a locking spring is provided to fix the set screw in a desired position.
  • the two bearing parts in which the rotatably mounted roller is fastened are designed such that they extend beyond the rubber coating in the lower region. This configuration prevents damage to the rubber coating if the clock roller is moved on the shaft and possibly strikes the edges of the sheet guiding device.
  • Fig. 1 shows a section through the application area of a printing press; in particular, Fig. 1 shows a Side view of the cycle roll 1 according to the invention.
  • the uppermost sheet 5 of a sheet stack is gripped by the suction devices 6, which are arranged on an axis 7, in the region of the leading edge, and by a pivoting movement of the axis 7 in the sheet conveying direction between the roll 8 Clock roller 1 and the transport roller 9 performed.
  • the clocking of the axis 7 and the clocking of the clock roller 1 are coordinated with one another in such a way that the sucker 6 releases the bow 5 at the point of swing at the latest.
  • the roller 8 rolls under pressure on the transport roller 9 and pushes the sheet 5 through the sheet guiding device 2, which consists of an upper sheet guiding device 3 and a lower sheet guiding device 4, against the gripper stops 10
  • the sheet 5 is transported to the gripper stops 10 and bulked, whereby it is precisely aligned with the gripper stops 10.
  • the clock roller 1 is lifted off the transport roller 9. After the gripper is closed, the sheet 5 is completely free and can be moved at machine speed.
  • Grippers 11 and gripper stops 10 are arranged in a known manner in a cylinder 12 of the printing press, not shown separately.
  • the clock roller 1 is fixed on a shaft 33 via two bearing levers 19 and a fastening mechanism 26, 27, 28 in a rotationally fixed manner.
  • the essential components of the clock roller 1 are: a prestressed spring plate 13, an adjusting thread 14 and the roller 8 rotatably mounted in the bearing plates 15.
  • the roller 8 consists of a ball bearing 16 which has a rubber coating 17.
  • the bearing plate 15 has a projection 18 in the lower region.
  • the spring plate 13 is in the front area via two screws 21 connected to the bearing levers 19.
  • the base 22 ensures a defined bending line for the spring plate 13. Above the center of the roller 8, an adjusting thread 14 is attached in the spring plate 13.
  • the roller 8 can be adjusted in height by a defined amount via the adjusting screw 23, which carries a scale 24.
  • the clock roller 1 is fixed in a locking position of the shaft 33 via an adjusting mechanism.
  • This adjusting mechanism consists of a notch 28 made in the axis 33 and a cylindrical pin 27 which is pressed into the notch 28 via the toggle screw 26.
  • the sheet metal part 29, which is fastened to the bearing levers 19 via the ball catch 31 and the nut 30, ensures that the cylinder pin 27 does not fall out laterally during the adjustment process of the clock roller 1.
  • the clock roller 1 is set to the type of paper to be processed, i. H. the contact pressure between the rubber coating 17 of the roller 8 and the transport roller 9 is selected depending on the thickness of the sheet 5 to be transported.
  • the optimum setting in each case can easily be found using the scale 24 on the adjusting screw 23.
  • the clocking of the clock roller 1, that is to say the setting and pressing of the roller 8 against the transport roller 9, is carried out in a known manner via a cam control.
  • the shaft 33 is rigidly coupled to a lever 34. In the lower region of the lever 34, a roller 48 is attached, which rolls on a curve 36.
  • FIG. 2 shows a plan view of an arrangement of the clock rollers 1 according to the invention.
  • the lower sheet guiding device 4 is connected to the side parts 38, 39 by means of fastening means.
  • the upper sheet guiding device 3 is screwed on.
  • the screws 49 are designed as knurled screws.
  • the upper sheet guide device 3 has cutouts 40, 41 both in its front area and in its rear area.
  • the grippers 11 engage in the cutouts 41 in the front region of the upper sheet guiding device 3.
  • the cutouts 40 in the rear area of the upper sheet guiding device 3 create space for the roll 8 of the cycle roll 1.
  • the edges of the cutouts 40 are advantageously beveled; this measure reduces the risk of the sheets 5 getting caught on the edges.
  • the clock rollers 1 are detachably fastened on the axis 33.
  • the clock rollers 1 are each fixed in the positions defined by the notches 37 on the axis 33. These positions are chosen so that they lie on the gap with the suction cups 6, which in turn are attached to a separate shaft 7.
  • the special arrangement prevents the suckers 6 from colliding with the roller 8 of the clock roller 1 in any operating state.
  • the toggle screw 26 is loosened; the clock roller 1 is then raised by slight pivoting in the rear area so that it does not collide with parts of the upper sheet guide device 3.
  • the pivoting of the clock roller 1 is limited by a nose 32 in the front region of the bearing lever 19.
  • the pin of the shaft 33 is mounted on the operator side in the side part 38. On the drive side, the axis 33 is guided through the side part 39 and mounted in a bearing part 42. A displacement of the axis 33 in axial direction is prevented by the stop 45 and by the adjusting ring 47.
  • the pin of the shaft 33 is rigidly connected to a lever 34 on the drive side. In the lower region of the lever 34, a cam roller 48 is screwed on. The lever 34 is set against the curve 36 via the spring 44.

Claims (7)

  1. Dispositif pour le transport de feuilles (5) dans une machine de traitement de feuilles qui comprend au moins un rouleau (8) monté rotatif, agencé sur un arbre à mouvement cyclique (33) et qui peut être appliqué contre un rouleau de transport (9) avec une pression d'application réglable, le rouleau (8) étant agencé réglable en hauteur et mobile en translation axiale à l'extrémité d'un élément élastique (13, 19),
    caractérisé
    en ce que l'arbre (33) présente des gorges d'arrêt (37) dans des positions définies et en ce qu'il est prévu sur le dispositif un mécanisme d'arrêt correspondant (31).
  2. Dispositif selon la revendication 1,
    caractérisé
    en ce que le dispositif (1) est d'une configuration telle que le rouleau (8) monté rotatif vienne s'appliquer sur le rouleau de transport (9) dans une position oblique par rapport à la direction de transport des feuilles.
  3. Dispositif selon la revendication 1,
    caractérisé
    en ce que l'élément élastique (13, 19) est une tôle élastique (13) présentant une courbe de flexion prédéterminée.
  4. Dispositif selon la revendication 1,
    caractérisé
    en ce que l'élément élastique (13, 19) est composé de deux leviers porte-palier (19) qui sont reliés élastiquement l'un à l'autre, l'élément élastique étant monté rotatif.
  5. Dispositif selon une des revendications précédentes,
    caractérisé
    en ce qu'il est prévu, comme dispositif de fixation du dispositif sur l'arbre (33), une goupille (27) qui peut être enfoncée dans une encoche (28) de l'arbre (33) au moyen d'une vis (26).
  6. Dispositif selon une des revendications précédentes,
    caractérisé
    en ce qu'il est prévu un dispositif de serrage rapide en tant que dispositif de fixation du dispositif sur l'arbre (33), un dispositif de serrage rapide.
  7. Dispositif selon une des revendications précédentes,
    caractérisé
    en ce que le rouleau (8) tourillonne dans deux tôles porte-palier (15), en ce que les deux tôles porte-palier (15) qui portent le rouleau (8) et sont accouplées à la tôle élastique (13) présentent une saillie et en ce que cette saillie se prolonge au-delà du diamètre du rouleau (8) dans la région inférieure.
EP95104641A 1994-04-26 1995-03-29 Rouleau à mouvement cadencé pour transporter des feuilles dans un machine d'impression Expired - Lifetime EP0679593B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4414445 1994-04-26
DE4414445A DE4414445A1 (de) 1994-04-26 1994-04-26 Taktrolle zum Transport von Bogen in eine bogenverarbeitende Maschine

Publications (2)

Publication Number Publication Date
EP0679593A1 EP0679593A1 (fr) 1995-11-02
EP0679593B1 true EP0679593B1 (fr) 1997-08-13

Family

ID=6516414

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95104641A Expired - Lifetime EP0679593B1 (fr) 1994-04-26 1995-03-29 Rouleau à mouvement cadencé pour transporter des feuilles dans un machine d'impression

Country Status (5)

Country Link
US (1) US5641159A (fr)
EP (1) EP0679593B1 (fr)
JP (1) JP3655663B2 (fr)
AT (1) ATE156775T1 (fr)
DE (2) DE4414445A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7334790B2 (en) * 2004-10-29 2008-02-26 Heidelberger Druckmaschinen Ag Apparatus for conveying sheets through a rotary press
US7716043B2 (en) * 2005-10-24 2010-05-11 Lg Electronics Inc. Removing time delays in signal paths
DE102007005404A1 (de) * 2007-02-03 2008-08-07 Man Roland Druckmaschinen Ag Bogenführungseinrichtung, insbesondere für eine Bogendruckmaschine

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1910506A (en) * 1930-02-21 1933-05-23 Spiess Georg Method of and means for feeding sheets to machines
DE545921C (de) * 1930-04-02 1932-03-07 E H Georg Spiess Dr Ing Vorrichtung zum Trennen und Zufuehren einzelner Bogen von einem Stapel zu einer Druckmaschine, Falzmaschine o. dgl.
DE830655C (de) * 1950-09-15 1952-02-07 Walter Fischer Steuerung der Tupferrollen an Bogenanlegern fuer Druckereimaschinen
US3210074A (en) * 1962-04-30 1965-10-05 Fairchild Camera Instr Co Pullout feed roller for printing press
JPS4941642B1 (fr) * 1968-12-25 1974-11-11
US3993302A (en) * 1970-07-30 1976-11-23 Miller Printing Machinery Co. Apparatus for registering and feeding sheets to a sheet fed printing press
CA940148A (en) * 1970-07-30 1974-01-15 Miller Printing Machinery Co. Apparatus for registering and feeding sheets to a sheet fed printing press
DD101641A1 (fr) * 1973-02-19 1973-11-12
DD123801A1 (fr) * 1975-07-15 1977-01-19
US4163550A (en) * 1977-08-10 1979-08-07 Am International, Inc. Pressure roller assembly
JPS58181536U (ja) * 1982-05-31 1983-12-03 リョービ株式会社 両面印刷機の給紙装置
DE3731216A1 (de) * 1987-09-17 1989-04-13 Koenig & Bauer Ag Vorrichtung zum zufuehren von bogen an eine bogenverarbeitende maschine, insbesondere druckmaschine
US4951062A (en) * 1988-12-12 1990-08-21 Page Jeffrey L Paper transport mechanism
US4979730A (en) * 1989-11-14 1990-12-25 Pitney Bowes Inc. Sheet drive system having an encoder apparatus

Also Published As

Publication number Publication date
US5641159A (en) 1997-06-24
JP3655663B2 (ja) 2005-06-02
DE59500495D1 (de) 1997-09-18
ATE156775T1 (de) 1997-08-15
EP0679593A1 (fr) 1995-11-02
DE4414445A1 (de) 1995-11-09
JPH07309473A (ja) 1995-11-28

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