EP0347611A2 - Pinces dans des rotatives en feuilles - Google Patents

Pinces dans des rotatives en feuilles Download PDF

Info

Publication number
EP0347611A2
EP0347611A2 EP89109620A EP89109620A EP0347611A2 EP 0347611 A2 EP0347611 A2 EP 0347611A2 EP 89109620 A EP89109620 A EP 89109620A EP 89109620 A EP89109620 A EP 89109620A EP 0347611 A2 EP0347611 A2 EP 0347611A2
Authority
EP
European Patent Office
Prior art keywords
gripper
closure part
abutment
spring
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.)
Granted
Application number
EP89109620A
Other languages
German (de)
English (en)
Other versions
EP0347611B1 (fr
EP0347611A3 (en
Inventor
Hans-Peter Hiltwein
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 EP0347611A2 publication Critical patent/EP0347611A2/fr
Publication of EP0347611A3 publication Critical patent/EP0347611A3/de
Application granted granted Critical
Publication of EP0347611B1 publication Critical patent/EP0347611B1/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
    • B41F21/104—Gripper details

Definitions

  • the invention relates to sheet grippers on sheet-fed rotary printing presses which have the generic features according to the preamble of patent claim 1.
  • Bow grippers with these features are known from DE-AS 12 36 527 and also from JP 54-94402.
  • the gripper spring is supported with one end against a fixed abutment on the body of the gripper finger and with the other end against a removable abutment which is attached to a gripper housing, so that the gripper spring can be inserted laterally and, if necessary, removed again .
  • the fixed abutment on the body of the gripper finger is designed as a depression in which one end of the gripper spring engages and is thus held against lateral displacement.
  • the other abutment consists of a threaded pin which can be axially screwed into a nut thread in a recess in the housing and which secures the other end of the gripper spring against radial movement either by engagement (AS 12 36 527) or by overlapping (JP 54-94402).
  • This design of the releasable abutment serves for the purpose of the initial assembly of the gripper spring in the manufacture of the machine and, if appropriate, the reassembly in the event of a breakage of the gripper spring.
  • a surface structure of the gripper support which supports the holding force resulting from the clamping force and possibly also a toothing of the counter surface on the gripper finger is known from these publications, whereby, however, smooth pressure carriers are not held securely are. Therefore, according to AS 12 36 527, a pin protruding above its surface should be arranged in the gripper pad, the tip of which is arranged coaxially with a bore in the closed gripper finger, so that the sheet locally receives a deformation which ensures that the sheet is held securely in the closed Bow grab improved.
  • the exchange of the gripper spring is cumbersome and also very time-consuming.
  • the invention is based on the object of designing a curved gripper with an easily replaceable gripper spring so that gripper springs can be replaced easily and in a time-saving manner and the clamping force between the gripper finger and the gripper support can be adjusted by changing the spring tension and, if necessary, the gripper support can be replaced more easily than before when the gripper springs are removed .
  • the gripper pads can also be easily replaced when the gripper springs are removed, in order to adapt the surface structure of the gripper pad to different qualities of the substrates or to replace the gripper pads when worn.
  • Such work is usually carried out by a mechanic, but can now also be carried out by the printer.
  • the inventive features thus enable the sheet grippers to be adapted to the print shop's order structure and facilitate any repairs.
  • the design of the releasable holding means between the removable abutment of the gripper spring and the fastening part for this abutment on the machine Preferred is the formation of the features of the invention on the abutment with which the gripper spring is supported on the gripper housing.
  • the training features mentioned in claim 1 are preferably suitable in connection with bayonet locks, plug-in couplings of comparable design and other quick couplings, to which the feature of claim 2 is directed.
  • the claim 3 contains a simple embodiment of such training.
  • the abutment can be assembled and disassembled either with conventional tools or with a special tool that can only be attached or removed when the abutment is fixed.
  • Such special tools are generally used in printing machines.
  • the gripper spring is pressed together with the tool so that the cams projecting on the pin part are positioned behind the stop faces of the recess by turning through a certain angle of less than 360 degrees. By releasing the spring, the cams snap into a recess in the stop surfaces, so that the abutment is fixed.
  • the pin part can be provided either on the body of the gripper finger or on the gripper housing and, conversely, the recess with the stop faces either on the gripper housing or on the body of the gripper spring.
  • An embodiment of the features of the invention on both abutments of the gripper spring is also conceivable.
  • the sheet gripper consists of the gripper finger 1, the gripper support 2 and the gripper housing 3.
  • the gripper housing 3 is arranged on a shaft 5 running parallel to the main axis of the cylinder 4 by means of bearing points 23. Its sequence of movements is controlled in the work cycle of the machine, the gripper edge of the sheet 6 between the gripper finger 1 and the gripper support 2 fastened to the cylinder 4 by means of screws 7 (FIG. 1) or released.
  • the closing movement of the gripper finger 1 is limited by an adjustable stop 8 on the gripper housing 3 in cooperation with a counter stop 9.
  • the opening movement of the gripper finger 1 takes place against the action of the gripper spring 10, which is designed as a helical spring and with its ends on the one hand against an abutment 11 on the counterblow 9, and on the other hand against an abutment 12 is supported on the gripper housing 3.
  • the abutment 11 on the counter stop 9 is formed by a recess into which one end of the gripper spring 10 is inserted.
  • the abutment 12 on the gripper housing 3 for the other end of the gripper spring 10 has a bayonet lock from an outer closure part 12a, which is formed on the abutment 12 itself, and a loose closure part 12b, both of which have complementary recesses or projections so that they can be plugged into one another and can be locked together by twisting or unlocked by twisting in the opposite direction, the facing end of the gripper spring 10 being supported against the inner closure part 12b, which projects into the gripper spring 10 with a pin extension 13 (FIG. 1a) and thereby secures it against lateral sliding .
  • an inner closure part 12b which is round in plan view, is provided at two preferably diametrically opposite locations with a radially extending projection 14 and the outer closure part 12a formed on the gripper housing 3 is provided with a through opening 15, the recesses 16, which are profiled complementarily to the projections 14, have slightly larger dimensions, so that the inner closure part 12b with the projections 14 can be easily pushed through.
  • a further, smaller-sized projection 17 is provided, which interacts with complementarily profiled recesses 18 on the circumference of the passage opening 15, these latter recesses 18 being arranged at an angle to the recesses 16, for example by 90 degrees, as shown in FIG Figure 2 is shown.
  • the inner closure part 12b is, as shown in FIG. 2a, from the outside (above) by the Through opening 15 inserted and pressed with the projections 14 through the recesses 16 against the action of the gripper spring 10 until the projections 14 are below the outer closure part 12a on the gripper housing 3, so that the inner closure part 12b can be rotated relative to the outer closure part 12a .
  • This rotation takes place into the position as shown in FIG. 2b, so that the smaller projections 16 are in overlap with the recesses 18 and snap into these recesses 18 due to the tension of the gripper spring 10. In this position, the larger projections 14 engage under the edge of the through opening 15 in the outer closure part 12a.
  • the inner closure part 12b can have provisions for attaching a common tool or a special tool. Shown in the drawing is a central bore 19 of shallow depth arranged on the end face with two opposite, radially extending recesses 20, so that a special tool can be used which has a cylindrical pin for guiding the inner closure part 12b during insertion and lateral approaches which in enclose the recesses 20 for transmitting the rotational movement from the tool to the inner closure part 12b.
  • FIGS. 3, 3a and 3b show a different design of the inner closure part 12b (FIG. 3) and the outer closure part 12a (FIG. 3a).
  • a closure part 12a which is round in plan view, has on the underside the pin extension 13 which engages in the facing end of the gripper spring 10.
  • Two diametrically opposite and radially extending projections 14 on the closure part 12b have a rectangular profile in plan view.
  • a pin 21 is arranged on one of these projections 14.
  • Closure part 12a has a through opening 15 with two recesses 16 profiled in accordance with the projections 14, and at an angle to these recesses 16, at least one bore 22 is provided in the outer closure part 12a, which can receive the pin 21 on the inner closure part 12b. Shown are two diametrically opposite bores 22, so that the inner closure part 12b can be rotated in one direction as well as in the other direction in order to produce the closure layer, in order to snap the pin 21 into one of the two bores 22 of the outer closure part 12a .
  • the closed position is shown in Figure 3b.
  • Figure 4 shows the sheet gripper with the gripper spring removed in the open position. It illustrates the advantage that the gripper support 2 can be easily replaced when the gripper springs are removed. The screws 7 holding the gripper support 2 are easily accessible when the gripper housing 3 is pivoted away.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Handling Of Cut Paper (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Clamps And Clips (AREA)
EP89109620A 1988-06-24 1989-05-29 Pinces dans des rotatives en feuilles Expired - Lifetime EP0347611B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3821324 1988-06-24
DE3821324A DE3821324C2 (de) 1988-06-24 1988-06-24 Bogengreifer an Bogenrotationsdruckmaschinen

Publications (3)

Publication Number Publication Date
EP0347611A2 true EP0347611A2 (fr) 1989-12-27
EP0347611A3 EP0347611A3 (en) 1990-08-16
EP0347611B1 EP0347611B1 (fr) 1992-11-25

Family

ID=6357155

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89109620A Expired - Lifetime EP0347611B1 (fr) 1988-06-24 1989-05-29 Pinces dans des rotatives en feuilles

Country Status (8)

Country Link
US (1) US4947748A (fr)
EP (1) EP0347611B1 (fr)
JP (1) JPH0245149A (fr)
CN (1) CN1014039B (fr)
AU (1) AU616024B2 (fr)
CA (1) CA1324161C (fr)
DE (2) DE3821324C2 (fr)
ES (1) ES2037329T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0643001A1 (fr) * 1993-09-09 1995-03-15 MAN Roland Druckmaschinen AG Pince pour feuilles dans des machines travaillant avec des feuilles

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5253583A (en) * 1991-03-04 1993-10-19 Fuji Kikai Kogyo Kabushiki Kaisha Device for positioning printing material for use in a printing apparatus
US5396842A (en) * 1993-09-03 1995-03-14 Halm Industries Co., Inc. Printing press including improved gripper assembly
JPH08183166A (ja) * 1994-12-28 1996-07-16 Riso Kagaku Corp 輪転式孔版印刷機の印刷用紙始端装着装置
US5901955A (en) * 1996-09-25 1999-05-11 Heidelberg Finishing Systems, Inc. Gripper seat
DE19816512B4 (de) * 1997-08-18 2008-08-28 Heidelberger Druckmaschinen Ag Bogengreifer in einer Bogenrotationsdruckmaschine
DE19844278C1 (de) * 1998-09-26 2000-01-05 Porsche Ag Widerlager für eine Feder
DE10241284B3 (de) * 2002-09-06 2004-03-18 Koenig & Bauer Ag Klemmvorrichtung für eine Druckplatte
JP4753542B2 (ja) * 2003-06-05 2011-08-24 ハイデルベルガー ドルツクマシーネン アクチエンゲゼルシヤフト 被印刷体処理機械のくわえづめ装置
US20080092760A1 (en) * 2006-10-19 2008-04-24 Heidelberger Druckmaschinen Ag Device and Method for Driving a Reversing Gripper in a Sheet-Processing Machine, Reversing Drum and Printing Press
CN103358679A (zh) * 2013-05-10 2013-10-23 天津长荣印刷设备股份有限公司 一种牙片结构及其工作方法
CN103910250B (zh) * 2014-03-31 2016-08-17 吴江久美微纤织造有限公司 一种纺织用布料卷筒
DE102016204221A1 (de) * 2015-04-20 2016-10-20 Heidelberger Druckmaschinen Ag Druckwerk einer Bogendruckmaschine

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE493269C (de) * 1930-03-05 Mailaender Fa J G Greifer bei Druckzylindern fuer Druckmaschinen
GB310177A (en) * 1928-04-14 1929-04-25 Fred Wesley Wright Improvements in and relating to sheet-gripping mechanisms for printing machines
US2092189A (en) * 1934-04-13 1937-09-07 Hoe & Co R Sheet fed printing machine
US3151552A (en) * 1963-04-17 1964-10-06 Miehle Goss Dexter Inc Spring gripper assembly
DE1236527B (de) * 1964-05-08 1967-03-16 Maschf Augsburg Nuernberg Ag Greifer fuer Druckmaschinen
DE1908181A1 (de) * 1969-02-19 1970-11-05 Roland Offsetmaschf Klemmgreifer fuer Bogenrotationsdruckmaschinen
JPS5941092Y2 (ja) * 1977-10-26 1984-11-26 アキヤマ印刷機製造株式会社 枚葉印刷機の紙くわえ爪
JPS579071Y2 (fr) * 1977-12-09 1982-02-22
DD154083A1 (de) * 1980-11-17 1982-02-24 Arndt Jentzsch Bogengreifereinrichtung
NL8301796A (nl) * 1983-05-20 1984-12-17 Philips Nv Regelbare electrische machine.
US4647031A (en) * 1985-07-22 1987-03-03 The Dow Chemical Company Gripper finger device
DE3529639A1 (de) * 1985-08-19 1987-02-26 Roland Man Druckmasch Federnder greifer fuer bogenrotationsdruckmaschinen
DE3529596A1 (de) * 1985-08-19 1987-02-26 Roland Man Druckmasch Federnder greifer fuer bogenrotationsdruckmaschinen
DE3529656A1 (de) * 1985-08-19 1987-02-26 Roland Man Druckmasch Federnder greifer fuer bogenrotationsdruckmaschinen
DE3623405A1 (de) * 1986-07-11 1988-02-04 Miller Johannisberg Druckmasch Bogengreifer fuer bogenverarbeitende maschinen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0643001A1 (fr) * 1993-09-09 1995-03-15 MAN Roland Druckmaschinen AG Pince pour feuilles dans des machines travaillant avec des feuilles

Also Published As

Publication number Publication date
DE3821324A1 (de) 1989-12-28
AU3702489A (en) 1990-01-04
CN1038969A (zh) 1990-01-24
DE3821324C2 (de) 1994-03-10
CN1014039B (zh) 1991-09-25
CA1324161C (fr) 1993-11-09
ES2037329T3 (es) 1993-06-16
JPH0245149A (ja) 1990-02-15
AU616024B2 (en) 1991-10-17
EP0347611B1 (fr) 1992-11-25
US4947748A (en) 1990-08-14
DE58902803D1 (de) 1993-01-07
EP0347611A3 (en) 1990-08-16

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