EP0006402A1 - Entraînement sans cames pour pinces oscillantes - Google Patents

Entraînement sans cames pour pinces oscillantes Download PDF

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Publication number
EP0006402A1
EP0006402A1 EP78100234A EP78100234A EP0006402A1 EP 0006402 A1 EP0006402 A1 EP 0006402A1 EP 78100234 A EP78100234 A EP 78100234A EP 78100234 A EP78100234 A EP 78100234A EP 0006402 A1 EP0006402 A1 EP 0006402A1
Authority
EP
European Patent Office
Prior art keywords
gripper
drive
lever
driving
crank
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.)
Granted
Application number
EP78100234A
Other languages
German (de)
English (en)
Other versions
EP0006402B1 (fr
Inventor
Norbert Dr. Thünker
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
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Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Priority to EP78100234A priority Critical patent/EP0006402B1/fr
Priority to DE7878100234T priority patent/DE2861397D1/de
Priority to US06/052,257 priority patent/US4295422A/en
Publication of EP0006402A1 publication Critical patent/EP0006402A1/fr
Application granted granted Critical
Publication of EP0006402B1 publication Critical patent/EP0006402B1/fr
Expired 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
    • B65H5/08—Feeding articles separated from piles; Feeding articles to machines by grippers, e.g. suction grippers
    • B65H5/10—Reciprocating or oscillating grippers, e.g. suction or gripper tables
    • 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
    • B41F21/04—Grippers
    • B41F21/05—In-feed grippers
    • 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
    • B65H5/08—Feeding articles separated from piles; Feeding articles to machines by grippers, e.g. suction grippers
    • B65H5/14—Details of grippers; Actuating-mechanisms therefor

Definitions

  • the invention relates to a drive free of cam drives of a vibrating pre-gripper for sheet-fed rotary printing machines, the drive elements of which are connected exclusively by rotary joints.
  • German utility model 71 31 281 describes an oscillating pre-gripper that is free of cams and driven by a crank arm.
  • this device requires an extremely wide channel of approximately 200 in the printing cylinder, which in turn increases the length of the maximum format to be processed is severely restricted. That being said, this pre-gripper device has poor transmission conditions due to a small transmission angle.
  • a printing machine with the type designation "Roland Favorit” from the printing press factory Faber & Schleicher, Offenbach is equipped with a cam-controlled lifting rocking gripper, which does a lifting movement while swinging back into the sheet transfer position, but the drive is very complex via a curve control, which is procedural the difficulties already mentioned.
  • a cam-controlled lifting rocking gripper which does a lifting movement while swinging back into the sheet transfer position, but the drive is very complex via a curve control, which is procedural the difficulties already mentioned.
  • the production of the cams used here is extremely complex and expensive.
  • the object of the invention is to develop a vibrating pre-gripper for a short cylinder channel to exhaust a large format range, which is driven on the one hand without cam drives and thus excludes the disadvantages of the relatively expensive cam drives described and on the other hand - on the other hand, the swinging back into its sheet take-over position takes place in a path that is more distant from the impression cylinder surface, whereby, among other things, high machine speeds are to be achieved.
  • Particular attention should be paid to good transmission ratios, that is to say transmission angles on the drive members, and the space requirement required should be kept to a minimum.
  • the drive is designed as a seven-link coupling gear, which is driven by two cranks rotating at the same angular speed and the pre-gripper itself is part of the coupling which is connected directly to the one crank.
  • the channel of the printing cylinder can be kept extremely short and the circumferential surface available for the sheet support can be increased accordingly, so that larger formats can be processed with the same printing cylinder diameter.
  • high machine speeds can be achieved thanks to favorable transmission ratios.
  • An advantageous embodiment of the invention is that an articulation point of the pre-gripper lever is connected via a coupling to the output member of a crank arm, whereby the pre-gripper is given a swinging motion, and that a second articulation point of the pre-gripper lever is eccentrically rotating on a circular path, whereby the pre-gripper experiences a lift against the pressure cylinder when swiveling back.
  • Such an arrangement is simple and inexpensive to manufacture and can be mastered dynamically well, which is why even at high machine speeds and the shortest time intervals of the sheet transfer to the printing cylinder, the exact adherence to the desired speed conditions of the pre-gripper is guaranteed during the sheet transfer at the feed table and sheet transfer to the printing cylinder.
  • a The result is absolutely precise registration when transporting sheets from the feed table to the impression cylinder.
  • a first gear wheel 3 is rotatably mounted in the machine frame 1 at frame point 2, centered on the axis of the printing cylinder, and firmly connected to it.
  • This gear 3 can be identical to the drive wheel of the printing cylinder.
  • a coupling 5 is articulated off-center in crank point 4, which is a link via a hinge point 6 to an output member 7 mounted in frame point 8.
  • the driven member 7 mounted in the frame point 8 is designed as a double-armed pivot lever.
  • the crank arm 2, 4, 6, 8 is driven by the crank point 4, which runs through a circular path 9 when the gear 3 rotates, the radius of which is the drive crank 10 for the pivoting movement of the pre-gripper 16.
  • a coupling 12 is articulated in the articulation point 11 and transmits the pivoting movement of the pivot lever 7 to a pre-gripper lever 14 via an articulation point 13.
  • a coupling, the pre-gripper carrier 15, is firmly connected to the pre-gripper lever 14.
  • the pre-grippers 16 are arranged at the free end of the pre-gripper carrier 15.
  • the pre-gripper carrier 15 is rotatably mounted eccentrically at the articulation point 30 of a second gear 17.
  • the gear 17 mounted in the frame point 18 is in engagement with the first gear 3 and rotates at the same angular velocity as this.
  • the movement of the articulation point 30 of the pre-gripper carrier 15 on a circular path 24 around the frame point 18, which is also the bearing point of the second gear 17, and the movement of the articulation point 13 of the pre-gripper lever 14 give the pre-gripper 16 the required oscillating movement.
  • the radius of the circular path 24 is used as the drive crank 25 for the lifting movement of the pre-gripper 16.
  • the pre-gripper carrier 15 continues to oscillate until the gripper support of the pre-gripper 16 has reached the reversal point 26.
  • the cam track 29 passing through the sequence of movements of the gripper support of the pre-gripper 16 during one revolution of the printing cylinder or the pre-gripper drum is shown in dashed lines.
  • the dimension of the largest lift 27 of the gripper support from the sheet feed path 28 corresponds to the diameter of the circular path 24, which the articulation point 30 describes during one revolution of the second gear 17.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
EP78100234A 1978-06-26 1978-06-26 Entraînement sans cames pour pinces oscillantes Expired EP0006402B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP78100234A EP0006402B1 (fr) 1978-06-26 1978-06-26 Entraînement sans cames pour pinces oscillantes
DE7878100234T DE2861397D1 (en) 1978-06-26 1978-06-26 Camless drive for an oscillating front gripper
US06/052,257 US4295422A (en) 1978-06-26 1979-06-26 Camless drive of a swinging pre-gripper feeder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP78100234A EP0006402B1 (fr) 1978-06-26 1978-06-26 Entraînement sans cames pour pinces oscillantes

Publications (2)

Publication Number Publication Date
EP0006402A1 true EP0006402A1 (fr) 1980-01-09
EP0006402B1 EP0006402B1 (fr) 1981-12-02

Family

ID=8185898

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78100234A Expired EP0006402B1 (fr) 1978-06-26 1978-06-26 Entraînement sans cames pour pinces oscillantes

Country Status (3)

Country Link
US (1) US4295422A (fr)
EP (1) EP0006402B1 (fr)
DE (1) DE2861397D1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0250963A2 (fr) * 1986-06-26 1988-01-07 M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft Dispositif d'entraînement des pinces oscillantes d'une machine à imprimer
DE3621385A1 (de) * 1986-06-26 1988-01-14 Roland Man Druckmasch Vorrichtung zum antrieb eines schwingenden vorgreifers einer druckmaschine
US5343806A (en) * 1992-09-10 1994-09-06 Heidelberger Druckmaschinen Ag Swivellable pre-gripper of a sheet-fed printing press and method of operation thereof
EP0972638A1 (fr) * 1998-07-16 2000-01-19 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif pour alimenter des feuilles vers une machine traitant ces feuilles
CN109626044A (zh) * 2018-11-16 2019-04-16 福州大学 一种单张纸印刷机递纸吸嘴运动轨迹优化设计方法

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4591442A (en) * 1984-11-26 1986-05-27 Nelson Research & Development Co. Flash chromatography
DE3628907A1 (de) * 1986-08-26 1988-03-10 Koenig & Bauer Ag Bogenwendevorrichtung in einer bogenrotationsdruckmaschine
DE4233846A1 (de) * 1992-10-08 1994-04-14 Heidelberger Druckmasch Ag Vorgreifer einer Bogendruckmaschine
DE19833903A1 (de) * 1998-07-28 2000-02-03 Heidelberger Druckmasch Ag Verfahren zur Übernahme einer Bogenhinterkante von einem vorgeordneten Zylinder einer Bogenrotationsdruckmaschine
DE102005058804A1 (de) * 2005-12-09 2007-06-14 Man Roland Druckmaschinen Ag Getriebeanordnung für Greifer an einer bogenverarbeitenden Maschine
DE102006008366A1 (de) * 2006-02-23 2007-08-30 Koenig & Bauer Aktiengesellschaft Vorrichtung zum Antreiben einer Schwinganlage

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE687856C (de) * 1938-10-14 1940-02-07 Rotaprint Akt Ges d Vervielfaeltigungsmaschinen
FR2147616A5 (fr) * 1971-07-23 1973-03-09 Heidelberger Druckmasch Ag

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7131281U (de) * 1971-11-04 Veb Polygraph Leipzig Kombinat Fuer Polygraphische Masch Vorgreiferantrieb
DE1113699B (de) * 1960-09-09 1961-09-14 Maschf Augsburg Nuernberg Ag Vorgreiferantrieb fuer Bogendruckmaschinen
DE2557866B2 (de) * 1975-12-22 1977-11-03 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Rotierende vorgreifertrommel

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE687856C (de) * 1938-10-14 1940-02-07 Rotaprint Akt Ges d Vervielfaeltigungsmaschinen
FR2147616A5 (fr) * 1971-07-23 1973-03-09 Heidelberger Druckmasch Ag

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0250963A2 (fr) * 1986-06-26 1988-01-07 M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft Dispositif d'entraînement des pinces oscillantes d'une machine à imprimer
DE3621385A1 (de) * 1986-06-26 1988-01-14 Roland Man Druckmasch Vorrichtung zum antrieb eines schwingenden vorgreifers einer druckmaschine
DE3621384A1 (de) * 1986-06-26 1988-01-14 Roland Man Druckmasch Vorrichtung zum antrieb eines schwingenden vorgreifers einer druckmaschine
EP0250963A3 (en) * 1986-06-26 1989-07-05 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Driving device for the front grippers of a printing machine
US5343806A (en) * 1992-09-10 1994-09-06 Heidelberger Druckmaschinen Ag Swivellable pre-gripper of a sheet-fed printing press and method of operation thereof
EP0972638A1 (fr) * 1998-07-16 2000-01-19 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif pour alimenter des feuilles vers une machine traitant ces feuilles
CN109626044A (zh) * 2018-11-16 2019-04-16 福州大学 一种单张纸印刷机递纸吸嘴运动轨迹优化设计方法

Also Published As

Publication number Publication date
US4295422A (en) 1981-10-20
DE2861397D1 (en) 1982-01-28
EP0006402B1 (fr) 1981-12-02

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