US3669246A - Apparatus for transporting stacks of sheets or the like - Google Patents

Apparatus for transporting stacks of sheets or the like Download PDF

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Publication number
US3669246A
US3669246A US123531A US3669246DA US3669246A US 3669246 A US3669246 A US 3669246A US 123531 A US123531 A US 123531A US 3669246D A US3669246D A US 3669246DA US 3669246 A US3669246 A US 3669246A
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US
United States
Prior art keywords
gripper
jaw
shaft
movement
path
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
US123531A
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English (en)
Inventor
Walter Risi
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.)
Mueller Martini Druckverarbeitungs Systeme AG
Original Assignee
Martini Buchbindereimaschinenfabrik 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 Martini Buchbindereimaschinenfabrik AG filed Critical Martini Buchbindereimaschinenfabrik AG
Application granted granted Critical
Publication of US3669246A publication Critical patent/US3669246A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42C—BOOKBINDING
    • B42C19/00—Multi-step processes for making books
    • B42C19/08—Conveying between operating stations in machines

Definitions

  • ABSTRACT Transporting apparatus for stacks of sheets in bookbinding or. like machines has an endless chain coupled to equidistant holders which can transport stacks past one or more processing stations.
  • Each holder has a first jaw which is coupled to the chain and is confined to movement in a stationary guide member to prevent tilting or other stray movements of the holder with reference to the chain, and a second jaw which is movable toward and away from the first jaw and carries a set of parallel toothed racks meshing with pinions which are mounted on a shaft rotatable in a bore of the first jaw.
  • a torsion spring biases the second jaw toward the first jaw, and a helical spring serves to normally hold the second jaw against movement toward the first jaw but to permit movement of the second jaw away from the first jaw under the action of cams which can be engaged by a follower provided on the second jaw.
  • the means for disengaging the helical spring from the shaft for the pinions in order to permit movements of the second jaw toward the first jaw under the action of the torsion spring comprises a rod which engages one end of the helical spring and has a follower which can engage one or more stationary cams adjacent to the path of the holders to thereby enlarge the internal diameters of convolutions of the helical spring and to thus cause its disengagement from the shaft.
  • the present invention relates to apparatus for transporting stacks of sheets or the like, particularly in bookbinding machines. Still more particularly, the invention relates to improvements .in apparatus for transporting stacks of sheets or the like past one or more processing or treating stations.
  • Presently known apparatus for the transport of stacks of sheets, portions of books, finished books or like commodities normally comprise a conveyor and a set of clamps which serve to transport the commodities along an endless path and past one or more processing stations.
  • the conveyor carries relatively long clamps which are capable of transporting customary simple stacks as well as twin or double stacks.
  • a drawback of relatively long clamps is that their jaws are likely to tilt in response to engagement with and retention of stacks consisting of relatively small sheets. Tilting of the jaws with reference to each other causes a movement of their clamping surfaces out of positions of parallelism with each other; such misalignment of clamping surfaces results in non-uniform retaining action and affects the quality of the final product.
  • each clamp has two jaws which are mirror symmetrical with reference to each other and are movable relative to each other by rack and pinion drives.
  • the clamps are mounted on supports which are linked to each other to constitute the conveyor. The supports must be properly guided to insure satisfactory orientation of the jaws during engagement with, during retention and during disengagement from the stacks. Satisfactory guidance of such supports necessitates the use of complicated and costly equipment.
  • the sprockets for the conveyor consisting of supports for the claws must be mounted on shafts which should have certain freedom of lateral movement in order to insure that the supports can travel around the end turns from one strength to the other, i.e., to compensate for the so-called polygon effect.
  • Such mounting of the shafts contributes to the complicatedness of the transporting apparatus.
  • An object of the invention is to provide a novel and improved apparatus for transporting stacks of sheets (such as portions of or complete books) through one or more treating or processing stations in bookbinding or like machines.
  • Another object of the invention is to provide the transporting apparatus with novel and improved holders which can properly engage and retain stacks of smaller or larger sheets as well as relatively thick or relatively thin stacks, and which can be guided with a higher degree of accuracy and with smaller outlay for equipment than in presently known transporting apparatus.
  • a further object of the invention is to provide a transporting apparatus wherein the holders need not be provided with discrete supports for the jaws and wherein the holders can readily travel along straight as well as along arcuate portions of their path.
  • An additional object of the invention is to provide novel means for guiding travelling holders for stacks of sheets in bookbinding or like machines and to provide novel means for closing and opening the jaws of such holders in selected portions of their path.
  • the improved transporting apparatus comprises a conveyor, preferably an endless link chain located in a substantially horizontal plane, which defines an endless path, at least one holder or clamp including a first gripper or jaw mounted directly on the conveyor for. movement along the endless path and a second gripper or jaw which is movable toward and away from the first gripper to permit retention or removal of a stack of sheets (e.g., a partly finished or completed book) which is located between the grippers, cam means adjacent to the path, follower means provided on the second gripper to move the latter away from the first gripper in response to engagement with the cam means, and stationary guide means engaging directly with the first gripper to maintain the latter in a predetermined position with reference to the conveyor, at least while the holder travels along at least one predetermined portion of the endless path, for example, along one or more straight stretches of the endless chain.
  • a conveyor preferably an endless link chain located in a substantially horizontal plane, which defines an endless path
  • at least one holder or clamp including a first gripper or jaw mounted directly on the conveyor
  • the holder further comprises biasing means (e.g., a torsion spring) for urging the second gripper toward the first gripper, pinion means rotatably mounted in one of the grippers, and toothed rack means parallel to the direction of movement of the second gripper with reference to the first gripper and meshing with the pinion means.
  • biasing means e.g., a torsion spring
  • the rack means is rigid with the other gripper and is reciprocable in ways provided therefor in the one gripper.
  • FIG. 2 is a front elevational view of the structure shown in FIG. 1 as seen in the direction of the arrow ll;
  • FIG. 3 is a transverse vertical section as seen in the direction of arrows from the line III-III of FIG. 1 or 2;
  • the improved transporting apparatus comprises a conveyor including an endless chain 1 which is disposed in a substantially horizontal plane and is trained over at least two sprockets, not shown.
  • the chain 1 supports a set of equidistant holders or clamps 2 (only one shown) each of which comprises two relatively movable grippers or jaws 3 and 4.
  • the aforementioned polygon effect is avoided by spacing the hol ders from each other. This also allows for the use of small sprockets for the chain 1.
  • the stationary guide member 7 has two horizontal guide surfaces 8 and 9 (see FIGS. 3 and 4) which are parallel to each other and serve to confine the holder 2 against movement in a substantially vertical plane at right angles to the plane of the chain 1.
  • the jaw 3 has four horizontal shafts 10, ll, l2, 13
  • the jaw 3 is provided with four bearing members 22, 23, 24, 25; the bearing members 22 and 24 have upwardly extending stub shafts 26, 27 and the bearing members 23, 25 have downwardly extending stub shafts 28, 29.
  • the stub shafts 26, 28, 27, 29 respectively carry pairs of coaxial idler rollers or wheels 30, 31, 32 and 33.
  • the rollers 30, 32 and 31, 33 respectively track the guide surfaces 1819 and 21-22 so that the holder 2 is positively guided against upward, downward or lateral movement and is compelled to follow a predetermined path along each elongated stringer or stretch of the chain 1.
  • the jaw 4 of the holder 2 is provided with two parallel guide rods 37, 38 which are normal to the clamping surface 6 and are reciprocable in ways 40, 41 provided therefor in the jaw 3.
  • Each of the guide rods 37, 38 constitutes a toothed rack which meshes with one of two pinions 45, 46 mounted on a shaft 44 by way of needle bearings 42, 43.
  • the shaft 44 is rotatable in a bore 41 of the jaw 3.
  • the pinions 45, 46 are held against axial and/or angular movement with reference to the shaft 44.
  • FIG. 1 shows that, when the chain 1 advances in the direction indicated by the arrow A and the follower 47 reaches a cam 50, the jaw 4 moves away from the jaw 3 whereby the racks 37, 38 move with reference to and rotate the respective pinions 45, 46 and the shaft 44 to insure that the orientation of the jaw 4 with reference to the jaw 3 remains unchanged.
  • the biasing means for urging the jaw 4 toward the jaw 3 comprises a torsion spring 51 whose convolutions surround the shaft 44 for the pinions 45 46 and one end portion 52 of which is secured to the jaw 3.
  • the other end portion 53 of the torsion spring 51 is secured to the shaft 44.
  • the torsion spring 51 then tends to return the jaw 4 into engagement with or nearer to the jaw 3 but the blocking or retaining spring 54 holds its convolutions in strong frictional engagement with the peripheral surface of the shaft 44 so that the movement of the jaw 4 toward the jaw 3 can take place only when the roller follower 58 of the respective disengaging bar 57 reaches the nearest cam 63a of the stationary carrier 63.
  • each cam 63a is sufficient to insure that the shaft 44 can rotate long enough to guarantee that the clamping surfaces 5 6 properly engage and hold the stack ST.
  • Each stack ST is transported by the respective holder 2 past one or more processing or treating stations and can be removed from the respective holder when the follower 47 reaches the nearest cam 50.
  • Apparatus for transporting stacks of sheets past one or more treating stations, particularly in a bookbinding machine comprising a conveyor defining an endless path; a holder including a first gripper mounted on said conveyor for travel along said path, a second gripper movable toward and away from said first gripper to permit retention and removal of a stack of sheets which is located between said grippers, biasing means for urging said second gripper toward said first gripper, pinion means rotatably mounted in one of said grippers, toothed rack means parallel with the direction of movement of said second gripper relative to said first gripper and meshing with said pinion means, said rack means being secured to the other gripper and said one gripper having ways for said rack means; cam means adjacent to said path; follower means provided on said second gripper to move said second gripper away from said first gripper in response to engagement with said cam means; and stationary guide means engaging with said first gripper to maintain the first gripper in
  • said rack means comprises a plurality of parallel racks secured to said second gripper and said pinion means comprises a plurality of coaxial pinions rotatably mounted in said first gripper and each meshing with a different rack.
  • Apparatus as defined in claim 4 further comprising a shaft rotatably mounted in said first gripper and rigid with said pinions, said biasing means comprising a torsion spring surrounding said shaft and having first and second end portions respectively secured to said shaft and to said first gripper, said torsion spring being arranged to bias said pinions to rotate in a direction to move said second gripper toward said first gripper and to store energy in response to movement of said second gripper away from said first gripper.
  • Apparatus as defined in claim 1 further comprising a shaft rotatably mounted in said first gripper and rigid with said pinion means, and blocking means for temporarily retaining said second gripper against movement toward said first gripper under the action of said biasing means.
  • said disengaging means comprises a reciprocable member engaging the second end portion of said helical spring at one end and having second follower means at the other end thereof, and second cam means adjacent to said predetermined portion of said path, said reciprocable member being arranged to move said second end portion of said helical spring in a direction to in crease the diameters of said convolutions in response to engagement between said second follower means and said second cam means to thereby enable said biasing means to move said second gripper toward said first gripper.
  • said conveyor comprises an endless chain having a plurality of links and pintles articulately connecting said links to each other, said first gripper being pivotably connected with at least one of said pintles.
  • said first gripper has a front portion and a rear portion, as considered in the direction of movement of said holder along said path, said front portion being pivotably connected with said one pintle and said rear portion having at least one elongated groove receiving another one of said pintles.

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  • Chain Conveyers (AREA)
  • Discharge By Other Means (AREA)
US123531A 1970-03-16 1971-03-12 Apparatus for transporting stacks of sheets or the like Expired - Lifetime US3669246A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH387570A CH504977A (de) 1970-03-16 1970-03-16 Vorrichtung für den Transport von Buchblöcken

Publications (1)

Publication Number Publication Date
US3669246A true US3669246A (en) 1972-06-13

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Application Number Title Priority Date Filing Date
US123531A Expired - Lifetime US3669246A (en) 1970-03-16 1971-03-12 Apparatus for transporting stacks of sheets or the like

Country Status (4)

Country Link
US (1) US3669246A (de)
JP (1) JPS5318924B1 (de)
CH (1) CH504977A (de)
DE (1) DE2110836C3 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4231466A (en) * 1977-06-04 1980-11-04 Rahdener Maschinenfabrik August Kolbus Book block transport system
US4823934A (en) * 1986-12-01 1989-04-25 E. P. Remy & Cie. Device for gripping and holding back articles, such as for example containers, on a conveyor, and conveyor equipped with this device
US20030072638A1 (en) * 2000-05-12 2003-04-17 Mario Lorenzi Automatic machine for the continuous binding of books and brochures
US20060070853A1 (en) * 2002-12-31 2006-04-06 Brumm Christopher A Compression passing roller
US20060177286A1 (en) * 2005-02-08 2006-08-10 Dirk Rygol Book block clamp
US20220032676A1 (en) * 2020-07-30 2022-02-03 Mueller Martini Holding Ag Clamp opening system for a machine for producing adhesively bonded printed products

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53125129A (en) * 1977-04-08 1978-11-01 Komori Printing Mach Device for clamping bookbinding machine
DE3207102C2 (de) * 1982-02-27 1987-01-15 Kolbus GmbH & Co KG, 4993 Rahden Buchblockzange
DE3905767A1 (de) * 1989-02-24 1990-08-30 Kolbus Gmbh & Co Kg Buchform- und -pressmaschine
DE502004007447D1 (de) 2004-11-08 2008-08-07 Mueller Martini Holding Ag Einrichtung zum Klebebinden von Druckprodukten zu Druckerzeugnissen
EP2030801B1 (de) 2007-08-27 2014-01-08 Müller Martini Holding AG Verfahren zur Herstellung von aus zusammengetragenen Druckbogen gebildeten klebegebundenen Buchblocks und entsprechende Vorrichtung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US310016A (en) * 1884-12-30 Mechanical movement
US2010810A (en) * 1934-01-08 1935-08-13 Sheridan Iron Works Book rounding and backing
US3082856A (en) * 1961-12-14 1963-03-26 Western Electric Co Multiple station machine tool
US3097733A (en) * 1959-02-12 1963-07-16 Johnson & Johnson Automatic machine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1262221B (de) * 1963-09-05 1968-03-07 Leipziger Buchbindereimaschine Zangensteuerung fuer Klebebindemaschinen
US3381797A (en) * 1966-09-12 1968-05-07 Tw & Cb Sheridan Co Book clamp

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US310016A (en) * 1884-12-30 Mechanical movement
US2010810A (en) * 1934-01-08 1935-08-13 Sheridan Iron Works Book rounding and backing
US3097733A (en) * 1959-02-12 1963-07-16 Johnson & Johnson Automatic machine
US3082856A (en) * 1961-12-14 1963-03-26 Western Electric Co Multiple station machine tool

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4231466A (en) * 1977-06-04 1980-11-04 Rahdener Maschinenfabrik August Kolbus Book block transport system
US4823934A (en) * 1986-12-01 1989-04-25 E. P. Remy & Cie. Device for gripping and holding back articles, such as for example containers, on a conveyor, and conveyor equipped with this device
US20030072638A1 (en) * 2000-05-12 2003-04-17 Mario Lorenzi Automatic machine for the continuous binding of books and brochures
US6722645B2 (en) * 2000-05-12 2004-04-20 Heidelberger Druckmaschinen Ag Automatic machine for the continuous binding of books and brochures
US20060070853A1 (en) * 2002-12-31 2006-04-06 Brumm Christopher A Compression passing roller
US7798312B2 (en) 2002-12-31 2010-09-21 Shuttleworth, Inc. Compression passing roller
US20060177286A1 (en) * 2005-02-08 2006-08-10 Dirk Rygol Book block clamp
US7458566B2 (en) 2005-02-08 2008-12-02 Kolbus Gmbh & Co. Kg Book block clamp
US20220032676A1 (en) * 2020-07-30 2022-02-03 Mueller Martini Holding Ag Clamp opening system for a machine for producing adhesively bonded printed products
US11932042B2 (en) * 2020-07-30 2024-03-19 Mueller Martini Holding Ag Clamp opening system for a machine for producing adhesively bonded printed products

Also Published As

Publication number Publication date
DE2110836A1 (de) 1971-10-07
JPS5318924B1 (de) 1978-06-17
DE2110836C3 (de) 1982-02-18
DE2110836B2 (de) 1981-06-19
CH504977A (de) 1971-03-31

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