EP0615863A1 - Dispositif pour arrondir les dos de blocs de livres - Google Patents

Dispositif pour arrondir les dos de blocs de livres Download PDF

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Publication number
EP0615863A1
EP0615863A1 EP94102772A EP94102772A EP0615863A1 EP 0615863 A1 EP0615863 A1 EP 0615863A1 EP 94102772 A EP94102772 A EP 94102772A EP 94102772 A EP94102772 A EP 94102772A EP 0615863 A1 EP0615863 A1 EP 0615863A1
Authority
EP
European Patent Office
Prior art keywords
round
segments
book block
movement
round segments
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
EP94102772A
Other languages
German (de)
English (en)
Other versions
EP0615863B1 (fr
Inventor
Horst Rathert
Karl-Friedrich Schröder
Manfred Albrecht
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.)
Kolbus GmbH and Co KG
Original Assignee
Kolbus GmbH and Co KG
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
Priority claimed from DE4330719A external-priority patent/DE4330719A1/de
Application filed by Kolbus GmbH and Co KG filed Critical Kolbus GmbH and Co KG
Publication of EP0615863A1 publication Critical patent/EP0615863A1/fr
Application granted granted Critical
Publication of EP0615863B1 publication Critical patent/EP0615863B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42C—BOOKBINDING
    • B42C5/00—Preparing the edges or backs of leaves or signatures for binding
    • B42C5/02—Preparing the edges or backs of leaves or signatures for binding by rounding or backing

Definitions

  • the invention relates to a device for back rounding of book blocks with a conveying device which clamps the book block and with a back rounding device consisting of round elements which, after the book block has been released by the conveying device, act on both sides of the book block by means of a defined rotary movement and by pressure.
  • the rounding process is intended to give the spine of the book block a circular arc or a flattened arch, which is crucial for the subsequent pressing step with regard to the desired spine profile of the book block.
  • the rounding should correspond more to the circular arc, the degree of rounding being determined by the rounding coefficient, which results from the height of the spine and the book block thickness.
  • the back shape is influenced by various factors such as the contact pressure of the round rolls, the angle of rotation of the round rolls and by the roll diameter.
  • a round roller with a single roller diameter is used in the machines that work according to the roller round principle for all resulting book block formats, which inevitably can only partially meet the requirements.
  • the desired arched back curvature can only be achieved if the roller diameter and book block thickness are coordinated.
  • Large deviations mean that the effective round stroke required for the desired round result is not available for small-format book blocks, due to the relatively large roller diameters depending on the available space, whereas for large-format book blocks the relatively small roller diameters do not exert any compressive forces on the middle area who can exercise book blocks.
  • the invention has for its object to provide a device for back rounding of book blocks of the type mentioned, which ensures the desired back rounding with a view to improving the quality of all resulting book block formats and with which the back shape can be designed variably.
  • the back round device according to the invention according to the first exemplary embodiment sees two round segments 2, 2 on each side of the book block 1 '; 3, 3 ', which alternately roll several times on the sides of the book block with short circular paths, by moving them relatively upwards after a transport clamp 4 has released the book block 1.
  • the alternating movement of the round segments 2, 2 '; 3, 3 ' controlled in such a way that the book block 1 of round segments 2, 2'; 3, 3 'remains constantly clamped.
  • the effective area of the round segments 2, 2 '; 3, 3 ' preferably divided into two rolling areas with different round radii R1 and R2, which are used depending on the round characteristics.
  • the round segments 2, 2 '; 3, 3 ' are each mounted in a displaceable intermediate frame 8, 9 with a mirror-image arrangement of the round radii R1, R2 to one another by front tooth segments 10, 11 engaging in racks 12, 13 of the intermediate frame 8, 9 and rear cams 14, 15 on rollers 16, 17 of the intermediate frame 8, 9 support.
  • the pitch circle radius of the toothed segments 10, 11 corresponds to the average round radius, which means that the outer sheet of the book block 1 is kept exactly at a constant height.
  • a common rotatably driven link 22 is provided, which engages with idler rollers 23, 24 of the intermediate frames 8, 9.
  • the backdrop 22 is located on a shaft 25 which, as can be seen from the left-hand illustration in FIG. 2, executes an alternating rotary movement about an axis 30 via a drive device 26 to 29 in the direction of the arrow, and thus an opposite movement of the round segments 2, 2 '; 3, 3 'generated in the support frame 20 in coordination with the vertical stroke.
  • the round segments 2, 2 '; 3, 3 'in the transverse direction moves, for which purpose a spring, not shown, exerts a tensile force on a crossmember 31, which is operatively connected to the axis 30 by force transmission lever 32.
  • the book block 1 is released by the round segments 2, 2 '; 3, 3 'and the takeover of a subsequent book block 1 to be rounded, which brings about a force component which counteracts the tensile force of the spring and which defines a defined distance between the round segments 2, 2'; 3, 3 'from the sides of the book block 1.
  • the back round device sees 1 round segments 40, 40 'on each side of the book block; 41, 41 ', which roll on the pages of the book block and at the same time move upwards after release of the book block 1 by the transport clamp 4.
  • the vertical movement of the two circular segments 40, 40', 41, 41 ', superimposed on the rotary movement makes the vertical movement of the book block 1 compensated and thus the outside sheets or printed sheets of the book block 1 kept at a constant level.
  • the holding of the book block 1 in the bracket 4 of the transport system in a defined height position caused by the compensation movement is important for the subsequent work process.
  • round segments 40, 40 '; 41, 41 ' different round radii R1, R2 are provided, which are used in accordance with the round characteristic by round segments 41, 41' as interchangeable parts with a larger radius reaching over the round segments 40, 40 'with the smaller round radius and being detachably held thereon .
  • the round segments 40, 40 '; 41, 41 ' are each rotatably mounted in a mirror-image arrangement between angled supports 43, 43', which are moved in the vertical plane on vertical guide tracks 44, 44 '.
  • cranked pressure levers 46, 46' are articulatedly attached to molded arms 45, 45 ', which in turn are articulatedly coupled to drive levers 47, 47'.
  • Drive levers 47, 47 'and bevel gears 51, 51' are located on the bearing axles 49, 49 'in a rotationally fixed manner and are discussed in more detail elsewhere.
  • the opposite angled supports 43, 43 ' are horizontally displaceably mounted on a shaft 53 mounted in the machine frame 52.
  • the distance between the supports 43, 43 ' can be adjusted by means of a manually operated adjusting spindle 54 held in the vertical guide track 44, which engages with a threaded part in a nut thread piece 57 rotatably mounted in a two-armed lever 56 , while at the other end of the lever 56 a coupling rod 58 connected to the vertical guide track 44 'on the opposite side engages.
  • the movement to open and close the round segments 40, 40 '; 41, 41 'in chronological coordination with their rotary movement takes place via a cam 61 driven by the main drive, which actuates a drive lever 62 with a control roller 63 held in contact by a tension spring 64.
  • the drive lever 62 carries a pivot bearing 65 which is penetrated by an actuating rod 66 which is articulated on the two-armed lever 56 and which is supported on the pivot bearing 65 by means of a compression spring 67 on the opposite side.
  • the compression spring 67 can be more or less compressed via adjusting means 68 and thus the pressing force between the round segments 40, 40 '; 41, 41 'vary.
  • the cross member 48 connecting the angled supports 43, 43 ' is moved between an upper and lower end station, actuated by a two-armed lever 69 rotatably mounted in the machine frame 52, one of which lever arm carries a follower roller 73 which is in a circular groove curve 74 of the cam disk 61 runs and the other arm is connected via a coupling rod 75 to the cross member 48 in an articulated manner.
  • the rotary movement for the rolling process on the book block side surfaces is derived from the vertical movement, for which purpose on a common axis 79 bevel gears 78, 78' on the crossmember 48 with the bevel gears 51, 51 'on the bearing axes 49, 49' of the carrier 43, 43 'are in engagement and a pull rod 70 is provided in an articulated manner between a boom of the drive lever 47 of the associated angled carrier 43.
  • the connecting axis 79 of the two bevel gears 78, 78' can be moved via a form-locking connection 80 of the bevel gear 78 'which is freely displaceable in the axial direction together with the cross member 48 on the one hand and on the other hand via an elongated hole 81 in the cross member 48 which extends from the bearing axis 49 is reached, move.
  • the point of engagement of the coupling rod 75 is shifted in an elongated hole 76 of the pivot lever 69 by means of adjustment means 77 to be operated by hand.
  • the linkage point of the pull rod 70 in an elongated hole 50 in the extension arm of the drive lever 47 can be varied with regard to the different round radii by means of a link adjustment device 72.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Transmission Devices (AREA)
EP94102772A 1993-03-18 1994-02-24 Dispositif pour arrondir les dos de blocs de livres Expired - Lifetime EP0615863B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4308602 1993-03-18
DE4308602 1993-03-18
DE4330719A DE4330719A1 (de) 1993-03-18 1993-09-10 Vorrichtung zum Rückenrunden von Buchblocks
DE4330719 1993-09-10

Publications (2)

Publication Number Publication Date
EP0615863A1 true EP0615863A1 (fr) 1994-09-21
EP0615863B1 EP0615863B1 (fr) 1998-08-05

Family

ID=25924054

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94102772A Expired - Lifetime EP0615863B1 (fr) 1993-03-18 1994-02-24 Dispositif pour arrondir les dos de blocs de livres

Country Status (2)

Country Link
EP (1) EP0615863B1 (fr)
JP (1) JPH071863A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6160052B2 (ja) * 2012-09-28 2017-07-12 大日本印刷株式会社 丸み出し装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0444409A1 (fr) * 1990-02-26 1991-09-04 Kolbus GmbH & Co. KG Machine à relier pour arrondir les dos de blocs de livres
EP0444410A1 (fr) * 1990-02-26 1991-09-04 Kolbus GmbH & Co. KG Procédé d'endossage mécanique de blocs de livres et dispositif de mise en oeuvre du procédé

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3413669A (en) * 1967-02-01 1968-12-03 Smyth Mfg Co Mechanism for conveying unbound books intermittently through a rounding and backing machine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0444409A1 (fr) * 1990-02-26 1991-09-04 Kolbus GmbH & Co. KG Machine à relier pour arrondir les dos de blocs de livres
EP0444410A1 (fr) * 1990-02-26 1991-09-04 Kolbus GmbH & Co. KG Procédé d'endossage mécanique de blocs de livres et dispositif de mise en oeuvre du procédé

Also Published As

Publication number Publication date
JPH071863A (ja) 1995-01-06
EP0615863B1 (fr) 1998-08-05

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