EP1148008A1 - Arbre portant des griffes pour la saisie de produits imprimés - Google Patents

Arbre portant des griffes pour la saisie de produits imprimés Download PDF

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Publication number
EP1148008A1
EP1148008A1 EP00810350A EP00810350A EP1148008A1 EP 1148008 A1 EP1148008 A1 EP 1148008A1 EP 00810350 A EP00810350 A EP 00810350A EP 00810350 A EP00810350 A EP 00810350A EP 1148008 A1 EP1148008 A1 EP 1148008A1
Authority
EP
European Patent Office
Prior art keywords
gripper
shaft
drum
grippers
drive
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
EP00810350A
Other languages
German (de)
English (en)
Other versions
EP1148008B1 (fr
Inventor
Günther Silberbauer
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.)
Grapha Holding AG
Original Assignee
Grapha Holding 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 Grapha Holding AG filed Critical Grapha Holding AG
Priority to DE50003100T priority Critical patent/DE50003100D1/de
Priority to EP00810350A priority patent/EP1148008B1/fr
Priority to JP2001119946A priority patent/JP4926333B2/ja
Priority to US09/838,559 priority patent/US6547240B2/en
Publication of EP1148008A1 publication Critical patent/EP1148008A1/fr
Application granted granted Critical
Publication of EP1148008B1 publication Critical patent/EP1148008B1/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
    • B65H5/08—Feeding articles separated from piles; Feeding articles to machines by grippers, e.g. suction grippers
    • B65H5/12—Revolving grippers, e.g. mounted on arms, frames or cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2402/00—Constructional details of the handling apparatus
    • B65H2402/50—Machine elements
    • B65H2402/54—Springs, e.g. helical or leaf springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2403/00—Power transmission; Driving means
    • B65H2403/50—Driving mechanisms
    • B65H2403/51—Cam mechanisms
    • B65H2403/512—Cam mechanisms involving radial plate cam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2601/00—Problem to be solved or advantage achieved
    • B65H2601/10—Ensuring correct operation
    • B65H2601/12—Compensating; Taking-up
    • B65H2601/122—Play

Definitions

  • the invention relates to a gripper drum with a gripper shaft according to the preamble of claim 1.
  • Gripper shafts of the type mentioned are used in particular to pull sheets or inserts from a stack at a feeder and to deliver them to an opening device.
  • a feeder with two such gripper shafts is known for example from the applicant's CH 652 103 A5.
  • the gripper shaft is rotated about its longitudinal axis in order to grasp the sheets.
  • grippers arranged on the gripper shaft each grip an arc on the underside of the stack and press this against a support of the gripper drum.
  • a drive with a spur gear and a closed curve is provided for rotating the gripper shaft.
  • the gripper shaft is accelerated with each closing process and through the play on the control curve and the gearing changed the direction of the spur gear. After this The turning point would like to continue rotating the shaft and that Play is moved to the opposite outside of the curve. Now hit the grippers on the support of the gripper drum on, the wave springs back within the game.
  • the grippers in particular remove thin printed sheets released briefly and can no longer be grasped properly become. As a result of this brief release, there is the risk of printing sheets being pulled off at an angle. In addition can cause printed sheets to slip off the grippers Processing interruption.
  • the known gripper shaft prone to failure and as a result Disruptions can significantly reduce the net performance.
  • the invention has for its object a gripper drum to create the type mentioned, which has the disadvantages mentioned avoids and which is nevertheless inexpensive to manufacture.
  • the game is at the toothing and the closed curve by means of the compensation spring canceled.
  • a closing movement a Counter torque of 6 Nm, for example.
  • This will a jumping of the gripper is avoided and it can be a gentle one Guaranteed closing movement for gripping the printed products become.
  • the printed sheets can thus be securely held in position on the Peeled from the bottom of a stack.
  • This also applies to a stack with a very high stack pressure, in which one a correspondingly high gripper force is required.
  • the safe one Gripping process enables a higher net performance and accordingly less interference.
  • the gripper drum according to the invention is particularly suitable for an investor. However, other applications are also conceivable where a printed sheet or other sheet by means of a Closing movement should be grasped.
  • the compensation spring with every closing movement by one Swing lever is tensioned, which is rotatably connected to the shaft body the gripper shaft is connected.
  • the compensation spring is preferably with the gripper shaft and the shaft of the gripper drum connected. When the gripper shaft is turned, the compensation spring automatically tensioned. The tension is easier Way by changing the position of the pivot lever adjustable on the gripper shaft.
  • Figures 1 and 2 show a gripper drum 1, which in one otherwise not shown feeder is arranged and around a Shaft 7 is driven.
  • the gripper drum 1 is with flange stops 8, of which only one is shown here a machine frame not shown here.
  • On the Several gripper disks 22 to 24 are arranged on shaft 7 which at a distance from the shaft 7 a limited rotatable gripper shaft 2 is stored.
  • the gripper shaft 2 has a shaft body 26 on which several grippers 3 are rotatably attached. In Figures 1 and 2 only two of these grippers 3 are shown here.
  • the Drive is designed so that the shaft body 26 with the Grippers 3 with each rotation of the gripper drum 1 Closing movement and an opening movement.
  • the grippers 3 in the rest position and in the figure 2 shown in the working position.
  • the grippers 3 from the position shown in FIG the position shown in Figure 2 moves.
  • the movement takes place by rotating the shaft body 26 about its longitudinal axis.
  • the shaft body 26 is turned on known tensioned by means of a torsion spring, the is connected to the shaft body 26.
  • Torsion springs known.
  • a compensation spring is located between the shaft body 26 and the shaft 7 9 arranged, which has two spring elements 10, which are spaced parallel to each other and each on are attached at one end to an axle 19 or 30.
  • the attachment takes place with mounting plates 17, each with a screw 18 on the axis 19 and 30 are clamped.
  • the axis 19 is rotatable in a bearing 20 of a holding plate 15 stored and this plate 15 is by means of a clamping part 16 and clamping screws 14 rotatably connected to the shaft 7.
  • the axis 30 sits in a pivot bearing 21 and this is also non-rotatably connected with two pivot levers 11, which with Clamping parts 12 and clamping screws 13 firmly with the shaft body 26 are connected.
  • the Cancellation of the game has the consequence that the gripper 3 at The closing movement does not spring back from the supports 28 and so that a gentle closing is guaranteed. Because the grabs 3 do not spring back, the sheets 29 can be held more securely become.
  • the suitable counter moment can be determined by tests become. The counter moment can be changed in a simple manner are released by the pivot lever 11 and on the shaft body 26 are rotated.
  • the spring elements 10 are spiral springs here, it is clear to the person skilled in the art that the spring elements could also be different. It is essential Development of a counter-moment during a closing movement.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Discharge By Other Means (AREA)
EP00810350A 2000-04-20 2000-04-20 Arbre portant des griffes pour la saisie de produits imprimés Expired - Lifetime EP1148008B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE50003100T DE50003100D1 (de) 2000-04-20 2000-04-20 Greiferwelle zum Greifen von Druckprodukten
EP00810350A EP1148008B1 (fr) 2000-04-20 2000-04-20 Arbre portant des griffes pour la saisie de produits imprimés
JP2001119946A JP4926333B2 (ja) 2000-04-20 2001-04-18 印刷製品をグリップするためのグリッパー軸
US09/838,559 US6547240B2 (en) 2000-04-20 2001-04-20 Gripper drum for gripping printed products

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00810350A EP1148008B1 (fr) 2000-04-20 2000-04-20 Arbre portant des griffes pour la saisie de produits imprimés

Publications (2)

Publication Number Publication Date
EP1148008A1 true EP1148008A1 (fr) 2001-10-24
EP1148008B1 EP1148008B1 (fr) 2003-07-30

Family

ID=8174665

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00810350A Expired - Lifetime EP1148008B1 (fr) 2000-04-20 2000-04-20 Arbre portant des griffes pour la saisie de produits imprimés

Country Status (4)

Country Link
US (1) US6547240B2 (fr)
EP (1) EP1148008B1 (fr)
JP (1) JP4926333B2 (fr)
DE (1) DE50003100D1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1700803B1 (fr) * 2005-03-10 2008-05-28 Müller Martini Holding AG Dispositif pour ouvrir et déposer une feuille pliée

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3960079A (en) * 1973-07-25 1976-06-01 Societa' Nebiolo S.P.A. Rotary printing press
US4241907A (en) * 1979-04-09 1980-12-30 Mccain Manufacturing Corporation Signature machine having an adjustable timing control of the extraction means
CH652103A5 (de) * 1981-09-22 1985-10-31 Grapha Holding Ag Anleger fuer falzbogen.
US4681213A (en) * 1985-10-23 1987-07-21 Harris Graphics Corporation Gripper assembly

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3806111A (en) * 1972-09-27 1974-04-23 Motter J Printing Press Co Signature inserter
CH617905A5 (fr) * 1977-05-30 1980-06-30 Grapha Holding Ag
US4564186A (en) * 1984-06-04 1986-01-14 R. R. Donnelley & Sons Company Apparatus for gathering printed signatures for saddle stitching
DE59806548D1 (de) * 1998-09-28 2003-01-16 Grapha Holding Ag Vorrichtung zum Ablegen von gefalzten Bogen auf eine Transportvorrichtung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3960079A (en) * 1973-07-25 1976-06-01 Societa' Nebiolo S.P.A. Rotary printing press
US4241907A (en) * 1979-04-09 1980-12-30 Mccain Manufacturing Corporation Signature machine having an adjustable timing control of the extraction means
CH652103A5 (de) * 1981-09-22 1985-10-31 Grapha Holding Ag Anleger fuer falzbogen.
US4681213A (en) * 1985-10-23 1987-07-21 Harris Graphics Corporation Gripper assembly

Also Published As

Publication number Publication date
DE50003100D1 (de) 2003-09-04
JP2002029645A (ja) 2002-01-29
US6547240B2 (en) 2003-04-15
JP4926333B2 (ja) 2012-05-09
US20020060424A1 (en) 2002-05-23
EP1148008B1 (fr) 2003-07-30

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