EP3482966B1 - Procédé et dispositif de couture des feuillets - Google Patents

Procédé et dispositif de couture des feuillets Download PDF

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Publication number
EP3482966B1
EP3482966B1 EP18204160.8A EP18204160A EP3482966B1 EP 3482966 B1 EP3482966 B1 EP 3482966B1 EP 18204160 A EP18204160 A EP 18204160A EP 3482966 B1 EP3482966 B1 EP 3482966B1
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EP
European Patent Office
Prior art keywords
hook
needle
printed sheet
fold
hook needle
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.)
Active
Application number
EP18204160.8A
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German (de)
English (en)
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EP3482966A1 (fr
Inventor
Matthias Wulf
Dirk Waldmann
Melanie Link
Heinz Bötschi
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 Holding AG
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Mueller Martini Holding AG
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Publication of EP3482966A1 publication Critical patent/EP3482966A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42B—PERMANENTLY ATTACHING TOGETHER SHEETS, QUIRES OR SIGNATURES OR PERMANENTLY ATTACHING OBJECTS THERETO
    • B42B2/00—Permanently attaching together sheets, quires or signatures by stitching with filamentary material, e.g. textile threads
    • B42B2/02—Machines for stitching with thread
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42B—PERMANENTLY ATTACHING TOGETHER SHEETS, QUIRES OR SIGNATURES OR PERMANENTLY ATTACHING OBJECTS THERETO
    • B42B2/00—Permanently attaching together sheets, quires or signatures by stitching with filamentary material, e.g. textile threads
    • B42B2/02—Machines for stitching with thread
    • B42B2/04—Machines for stitching with thread with straight needles

Definitions

  • the invention relates to a method and a device for thread stitching folded printed sheets, in which individual folded printed sheets are lined up one after the other flatly and sewn with at least one sewing needle and with at least one hook needle to form a book block.
  • the at least one sewing needle brings a binding thread from the outside through the fold of a printed sheet to be sewn inwards, between its legs, and thereby creates a first, single-stranded seam on an outside of the fold.
  • the binding thread is then stored between the legs of the folded printed sheet and, starting from the sewing needle in the form of a thread loop, is transported so far in the direction of a path of movement of the hook needle that a closed end of the thread loop extends beyond this path of movement.
  • the at least one hook needle dips through an eyelet of the same binding thread created on the outside of the fold when sewing the previous printed sheet and through the fold of the printed sheet to be sewn inwards, between its legs in the previously formed thread loop, captures this during a return stroke and conveys it from the inside through the fold of the printed sheet to be sewn and through the eyelet on the outside of the fold to the outside.
  • a second, double-stranded seam spaced apart from the first, single-stranded seam is produced on the outside of the fold.
  • the hook needle which forms a hook that serves to receive the binding thread and has a recess on one side, is rotated about its longitudinal axis for sewing the printed sheet and its hook is positioned in different rotational positions.
  • thread sewing machines with pre-piercing needles, sewing needles and hook needles that work in pairs and that can be moved up and down, as well as one between a sewing needle and a hook needle known reciprocating thread layer.
  • thread sewing machines several loose, standing and folded printed sheets strung together with their broadsides in stack form are connected individually with at least two seams consisting of the same binding thread to form book blocks.
  • each of the printed sheets provided one after the other is first pierced at its fold by means of two pre-piercing needles which are brought up to the fold from an inside at a distance from one another and between its two legs.
  • a sewing needle with a needle eye is passed from the outside of the fold through the first of the two holes formed by the pre-piercing needles and a hook needle equipped with a hook open at the top is passed through the second hole.
  • a binding thread located in the needle eye for example supplied by a thread spool and possibly already sewn to the previous printed sheet, is inserted with the sewing needle between the legs of the printed sheet and a thread supply is created in this interior space of the printed sheet to be sewn.
  • a first, single-strand seam is formed on the outside of the fold or such a seam that has already been formed on the outside of the fold of at least one previously stapled (synonymous: sewn) printed sheet is continued.
  • the binding thread now stored within the printed sheet to be stapled (synonymously: the printed sheet to be sewn) is transported by the thread layer in the form of a loop in the direction of the hook needle and positioned there over its path of movement. During its downward movement, the hook needle dips through the loop of the binding thread provided by the thread layer. This thread loop is then pulled taut around the hook needle and captured by the hook during its subsequent upward movement. The thread loop is then pulled upwards through the second hole in the fold of the printed sheet to be stapled and through an eyelet that surrounds the hook needle and is formed from the thread loop of the previously stapled printed sheet.
  • the hook needle is rotated twice by 180 ° around its longitudinal axis, for which purpose appropriately designed control cams or cam disks are used.
  • the hook needle is rotated in such a way that the hook is then on its side that is remote from the already stapled printed sheet. This prevents the eyelet formed from the thread loop of the previously stitched printed sheet from unhooking.
  • a second rotation takes place in such a way that the hook is on its side facing the already stapled printed sheet. This ensures that the currently formed loop of the binding thread is caught by the hook and passed through the eyelet of the previously stapled printed sheet without taking the latter with it.
  • the EP832758 A2 discloses a similar method for producing thread-sewn book blocks from a stack of printed sheets lined up flat, in which, however, instead of a mechanical thread layer, a gas flow is used to transport the loop-shaped binding thread from the sewing needle to the hook needle.
  • the downward movement of the hook needle is offset in time with respect to the downward movement of the sewing needle, ie later.
  • the hook needle is rotated by 180 ° for the downward movement and the upward movement. This is done by means of a hydraulic cylinder, which is also like the one in the CH24452 used control cams or how the cams according to the CH55948 exactly two angles of rotation of 180 °, ie two corresponding rotational positions of the hook of the hook needle.
  • a toothed rack is used in each case as the actuating element for power transmission from the drive to the hook needle to be rotated.
  • the EP832758 A2 discloses the preamble of claim 1 or claim 5.
  • the hook of the hook needle can be positioned as far away as possible from this eyelet in good time before the inside-out penetration of the eyelet formed from the thread loop of the previously sewn printed sheet. Therefore, the risk of injury to the eyelet can be minimized. In addition, it is ensured that the eye is not picked up again by the hook of the hook needle. In this way, the quality of the book blocks can also be increased compared to book blocks produced according to the prior art.
  • the at least one hook needle is rotated about its longitudinal axis before the thread loop is grasped in such a way that the hook of this hook needle is positioned on its side opposite the sewing needle.
  • the thread loop can be reliably grasped with the hook during the return stroke of the hook needle. A high quality of the book blocks to be produced can thus be guaranteed.
  • the at least one hook needle is rotated around its longitudinal axis prior to gripping the thread loop in such a way that its hook is then at an angle of +/- 85 °, preferably at an angle of +/- 50 ° and particularly preferably at an angle of +/- - Is positioned 15 ° in relation to a first vertical plane through the fold of the printed sheet to be stapled.
  • Advantageous areas for the rotation of the hook needle or for the positioning of the hook are thus indicated.
  • the at least a hook needle is rotated about its longitudinal axis before penetrating from the outside inwards through the eye of the previous printing sheet and the fold of the printing sheet to be sewn in such a way that its hook is aligned in a second vertical position and at right angles to the fold of the printing sheet to be sewn, imaginary plane, is positioned on a side facing away from the previously sewn printed sheet of the hook needle in a starting rotational position.
  • This position defines a rotation of the hook needle and a positioning of the hook in a first rotational position, which can then advantageously be used as a starting rotational position for the further rotation of the hook needle or for the further positioning of the hook.
  • the three available and individually adjustable rotary positions can better than the two fixed rotary positions known from the prior art on the three critical process steps of thread sewing, namely the insertion of the hook needles from the outside in through the fold of the printed sheet to be sewn, the grasping of the thread loops with the hooks of the hook needles and the penetration of the hooks of the hook needles from the inside to the outside through the eyelet of the previous printed sheet located on the outside of the fold.
  • the information applied to at least one of the printed sheets to be sewn can be, for example, identification by means of a barcode, an RFID transponder or a print mark. In this way, it is possible to react advantageously both to the paper thickness and to further paper properties and to the thread thickness and to further thread properties.
  • the at least one hook needle is rotated by the determined angle of rotation and the hook is positioned accordingly with a drive, in particular with a Servo motor.
  • a drive in particular with a Servomotor
  • every rotation of the hook needle and thus every positioning of the hook can be implemented very precisely and quickly.
  • the hook needle can be rotated during each sub-process of the thread sewing so that its hook is optimally positioned.
  • this device has a device, operatively connected to a machine control, for rotating the at least one hook needle about its longitudinal axis, the device having a holder for the at least one hook needle, an adjusting element for rotating the at least one hook needle and a drive for the adjusting element.
  • a large number of hook needles can advantageously be rotated by means of a single drive.
  • the drive has a servomotor. With such a servomotor, every rotation of the hook needle and thus every positioning of the hook can advantageously be realized.
  • the adjusting element is equipped with a rack.
  • a rack represents a simple, inexpensive component that has proven itself in such applications for transmitting the torque from the drive to the hook needles.
  • Figs. 1 to 4 show a schematic representation of the sewing principle known from the prior art of a device 1 for thread basting provided for the normal stitch.
  • a book block 6 formed from two folded, flatly lined up and already sewn together by means of a binding thread 2 in the form of two spaced seams 3, 4 printed sheets 5 is shown.
  • a third, folded printed sheet 5 which is transported in the feed direction 7 to the book block 6, with its first leg 8 placed flat against the book block 6 and thus made available for sewing with this book block 6.
  • this further printed sheet 5 resting on the stitching saddle, not shown, is shown cut through at its fold 10, ie only the first leg 8 of the third printed sheet 5 is shown, while its second leg 9 has been omitted.
  • a sewing needle 13 having a needle eye 12
  • a hook needle 14 which is arranged at a distance from the sewing needle 13 in the direction of the fold 10 of the third folded printed sheet 5 and has a recess 16 on its circumference that forms a hook 15 ( see also Fig. 7, Fig. 8 ) as well as a blown air nozzle 17 arranged on the side of the sewing needle 13 remote from the hook needle 14 and designed as a transport element for the binding thread 2, as well as a gate 18 of the device 1.
  • the two pre-piercing needles 11 first pierce the fold 10 of the printed sheet 5 to be sewn from the inside in the direction of the movement arrows shown and thereby form two spaced holes 19 in this fold 10 ( Fig. 1 ).
  • the sewing needle 13 which is initially positioned on an outer side 20 of the fold 10 and guiding the binding thread 2 provided, for example, by a thread spool (not shown), in its needle eye 12 inserted through a first of the two holes 19 into an interior space 21 located between the two legs 8, 9 of the printed sheet 5 to be sewn.
  • a first section 2a of the binding thread 2 located on a first side of the eye of the needle 12 is connected to a first, single-strand seam 3 of the book block 6 formed on the outside 20 of the fold 10, while a second section 2b located on a second side of the eye of the needle 12 of the binding thread 2 is connected to the thread spool, not shown.
  • the hook needle 14 is still on the outside 20 of the fold 10 of the printed sheet 5 to be sewn and is surrounded there by an eyelet 22 formed from a thread loop of the binding thread 2 used to sew the previous printed sheet 5 ( Fig. 2 ).
  • the two sections 2a, 2b of the binding thread 2 are then acted upon by means of an air blast 23 produced by the blown air nozzle 17 and transported in the direction of a movement path 24 of the hook needle 14, shown in dashed lines.
  • a thread loop 25 with a closed end 26 is formed ( Fig. 3 ).
  • This thread loop 25 is guided into the link 18 and positioned in such a way that its closed end 26 finally extends beyond the movement path 24 of the hook needle 14 onto the side of this movement path 24 facing away from the sewing needle 13.
  • a pneumatic transport element designed as a blown air nozzle 17 for the binding thread 2 a mechanical transport element known per se, designed as a thread layer, can also be used.
  • the hook needle 14 surrounded by the eyelet 22 on the outside 20 of the fold 10 dips from the outside through the second hole 19 formed by the piercing needles 11 into the interior space 21 of the printed sheet 5 to be sewn between the legs 8, 9 and enters finally also through the thread loop 25.
  • the thread loop 25 which has meanwhile been pulled taut around the latter, is grasped by the hook 15 of the hook needle 14 and guided through the second hole 19 of the fold 10 and through the eyelet 22 located on the outside 20 thereof.
  • a second, double-stranded seam 4 is formed on this outside 20 of the fold 10, which in the direction of this Fold 10 is arranged at a distance from the first, single-strand seam 3 ( Fig. 4 ).
  • Fig. 5 shows a schematic plan view of a sewing needle 13 with the needle eye 12, which is always aligned in the same way, and of a hook needle 14 cooperating with the sewing needle 13.
  • the two rotational positions of the hook needle 14 and its hook 15 in relation to FIG the fold 10 of the printed sheet 5 to be sewn.
  • the hook needle 14 is rotated 180 ° around its longitudinal axis 27 . It is irrelevant whether the rotation is clockwise or counterclockwise.
  • the hook needle 14 and hook 15 accordingly have a first rotational position 30 and a second rotational position 31, respectively.
  • the hook 15 In its first rotational position 30, the hook 15 is located in a second vertical and at right angles to the fold 10 of the printed sheet 5 to be sewn, imaginary plane 32 and there on a side of the hook needle 14 facing away from the previously sewn sheet 5 Fig. 3 shown.
  • the hook needle 14 and thus its hook 15 is rotated into the second rotary position 31, for example according to the second movement arrow 29.
  • the hook 15 then also lies in the second vertical plane 32, but on a side of the hook needle 14 facing the previously sewn printed sheet 5.
  • This position of the hook 15 can also be the Fig. 4 can be removed, the hook needle 14 being shown there, however, after it has penetrated the fold 10 and the eyelet 22.
  • a correspondingly designed hydraulic cylinder (not shown) is used, the first end position of which is the first rotational position 30 of the hook needle 14 or its hook 15 and the second end position of which is the second rotational position 31 of the hook needle 14 or its hook 15 corresponds.
  • the hook needle 14 moves from the outside to the inside, it and thus also its hook 15 are in their first rotary position 30.
  • This rotary position 30 of the hook 15 on the side of the hook needle 14 remote from the already stapled printed sheets 5 is maintained at least as long as the hook 15 is still partially on the outside 20 of the fold 10 (cf. Fig. 2, Fig. 3 ).
  • a device 1 for sewing folded printed sheets 5 can of course also be provided for the alternate stitch or be switched to this.
  • a sewing needle 13 is arranged on both sides of the respective hook needle 14 and at the same distance therefrom, whereby the supply of the binding thread 2 to the hook needle 14 in the form of the thread loop 25 alternating from the one and the other sewing needle 13 is realized starting from.
  • Fig. 6 three sewing needles 13 and two hook needles 14 of such a device 1 of the prior art suitable for alternate stitching are shown by way of example, while in FIG Fig.
  • the bottom is a schematic plan view of five printed sheets 5 sewn together at their folds 10 in alternating stitches to form a book block 6. It can clearly be seen here that the eyelets 22 of the second, double-stranded seam 4 are oriented differently, depending on which sewing needle 13 and thus from which side the binding thread 2 has been guided to the hook needle 14.
  • Fig. 7 shows, in a schematic representation, a section through a hook needle 14 and through a sewing needle 13 of a device 1 according to the invention for sewing thread, arranged to the left of the hook needle 14 and cooperating with it.
  • the thread loop 25 of the binding thread 2 which is also shown, has thus been formed from left to right.
  • This figure shows the hook needle 14 and the hook 15 in each case in a rotational position according to the invention when penetrating the eyelet 22 of the binding thread 2 of the previously sewn printed sheet 5 that rests on the fold 10 of the currently to be sewn printed sheet 5 and is shown here with dashed lines.
  • the hook needle 14 has been rotated about its longitudinal axis 27, that its hook 15 is arranged in a vertical plane of symmetry 33 of this eyelet 22 and is positioned on a side of the hook needle 14 facing the previously sewn printed sheet 5.
  • FIG. 8 shows a schematic representation of a section through the same hook needle 14 as in FIG Fig. 7 , but with a different sewing needle 13 arranged to the right of the hook needle 14 and cooperating with it.
  • the thread loop 25 of the binding thread 2 which is also shown, is thus formed from right to left.
  • This figure shows the hook needle 14 and the hook 15 each in a further rotational position according to the invention when penetrating the eyelet 22 of the binding thread 2 of the previously sewn printed sheet 5 lying on the fold 10, not shown here, of the printed sheet 5 currently to be sewn has been rotated about its longitudinal axis 27 that its hook 15 in a vertical plane of symmetry 33 opposite this Fig. 7 is arranged differently oriented eyelet 22 and is positioned on a side of the hook needle 14 facing the previously sewn printed sheet 5.
  • FIG. 9 and 10 each a schematic top view of the sewing needle 13 and of the hook needle 14 of a device 1 according to the invention for sewing thread, with further rotational positions according to the invention of the hook needle 14 or its hook 15 for detecting one from the left ( Fig. 9 ) or one from the right ( Fig. 10 ). Accordingly, the hook needle 14 is rotated about its longitudinal axis 27 before the thread loop 25 is grasped in such a way that the hook 15 of the hook needle 14 is positioned on its side opposite the sewing needle 13.
  • the hook 15 is at an angle of +/- 85 °, preferably at an angle of +/- 50 ° and particularly preferably at an angle of +/- 15 ° with respect to a first vertical plane 34 through the fold 10 of the to be stapled Press sheet 5 rotated.
  • the rotational position of the hook needle 14 or its hook 15 that can be achieved in each case is a compromise between the time available for rotating the hook needle 14, measured in milliseconds, and the optimal gripping of the thread loop 25 by the hook 15.
  • Fig. 11 shows in a schematic representation a device 36 connected to a machine control 35 for rotating the hook needles 14 of a device 1 according to the invention for sewing thread.
  • a device 1 with four hook needles 14 is shown here by way of example, the sewing needles 13 cooperating with the hook needles 14 having been omitted for reasons of clarity.
  • the device 36 for rotating the hook needles 14 has a holder 37 for rotatably receiving the hook needles 14, a rack 38 having a rack Adjusting element 39 for rotating the hook needles 14 about their longitudinal axis 27 and a drive 41 having a servomotor 40 for the corresponding actuation of the adjusting element 39.
  • the hook needles 14 and thus also their respective hooks 15 are thus in principle designed to be rotatable about their longitudinal axis 27 at any angle of rotation ⁇ and can be stopped in any turning position.
  • the hook needles 14 for sewing a printed sheet 5 fed to the stitching saddle are initially each in an initial rotational position which is the one known from the prior art and shown in FIG Figs. 1 to 3 and 5 first rotational position 30 shown corresponds.
  • the hooks 15 are each located in the second vertical plane 32 oriented at right angles to the fold 10 of the printed sheet 5 to be sewn and there on the side of their hook needle 14 facing away from the previously sewn printed sheet 5, as is also shown schematically in FIG Fig. 6 above and Fig. 11 is shown.
  • the hook needles 14 rotatably located in the holder 37 and thus also their hooks 15 are moved out of their starting rotational position after the drive 41 and the actuating element 39, according to the invention, either into one of the in Fig. 9 or in one of the in Fig. 10 rotated second rotational positions shown. This happens depending on whether the thread loop 25 is fed from a sewing needle 13 located on the left or on the right of the respective hook needle 14. During their return stroke, the hooks 15 of the hook needles 14 positioned in this way grasp the respective thread loop 25 and lead them to the outside through the second hole 19 of the fold 10 of the printed sheet 5 to be sewn.
  • each offset by 180 ° - a further rotational position of the hook needles 14 and their respective hook 15 is added.
  • the three rotary positions that are now available can better address the three critical process steps of thread sewing, namely the insertion of the hook needles 14 from the outside to the inside through the fold 10 of the printed sheet 5 to be sewn, the grasping of the thread loops with the hooks 15 of the hook needles 14 and the penetration of the hooks 15 of the hook needles 14 occurring from the inside to the outside through the eyelet 22 of the previous printed sheet 5 located on the outside 20 of the fold 10 in each case.
  • two of the three rotary positions can be individually and thus flexibly adapted to the respective work situation when thread stitching folded printed sheets 1, which is why the quality of the book blocks 6 produced can be increased and the risk of injury to the binding thread 2 used can be reduced.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Sewing Machines And Sewing (AREA)

Claims (8)

  1. Procédé de couture des feuillets, lors duquel des feuilles imprimées (5) individuelles pliées sont alignées à plat l'une contre l'autre et sont cousues en un corps d'ouvrage (6) avec au moins une aiguille à coudre (13) ainsi qu'avec au moins une aiguille à crochet (14), dans lequel
    - l'au moins une aiguille à coudre (13) introduit un fil de reliure (2) depuis l'extérieur à travers le pli (10) d'une feuille imprimée à coudre (5) vers l'intérieur entre les pattes (8, 9) de celle-ci et obtient ainsi une première couture (3) à un brin sur une face extérieure (20) du pli (10),
    - le fil de reliure (2) est logé entre les pattes (8, 9) de la feuille imprimée pliée (5) et est transporté depuis l'aiguille à coudre (13) sous forme d'une boucle de fil (25) dans la direction d'une trajectoire (24) de l'aiguille à crochet (14) jusqu'à ce qu'une extrémité fermée (26) de la boucle de fil (25) s'étende sur cette trajectoire (24),
    - l'au moins une aiguille à crochet (14) plonge à travers un anneau (22) du même fil de reliure (2) apparaissant sur la face extérieure (20) du pli (10) lors de la couture de la feuille imprimée précédente (5) et à travers le pli (10) de la feuille imprimée (5) à coudre, vers l'intérieur entre les pattes (8, 9) de cette dernière dans la boucle de fil (25) précédemment formée, saisit celle-ci pendant une course de retour, la transporte de l'intérieur vers l'extérieur à travers le pli (10) de la feuille imprimée (5) à coudre ainsi qu'à travers l'anneau (22) se trouvant sur la face extérieure (20) du pli (10) et obtient ainsi sur la face extérieure (20) du pli (10) une deuxième couture à deux brins (4) écartée de la première couture à un brin (3),
    - l'aiguille à crochet (14) comporte un évidement (16) d'un seul côté formant un crochet (15) servant à recevoir le fil de reliure (2), cet évidement étant tourné autour de son axe longitudinal (27) pour la couture des feuilles imprimées (5) et le crochet (15) étant ainsi positionné dans différentes positions de rotation,
    - l'aiguille à crochet (14) est, avant de traverser de l'intérieur vers l'extérieur le pli (10) de la feuille imprimée (5) à coudre ainsi que l'anneau (22) de la feuille imprimée (5) précédemment cousue, tournée autour de son axe longitudinal (27) de sorte que son crochet (15) est positionné dans un plan de symétrie (33) vertical de cet anneau (22) et sur un côté de l'aiguille à crochet (14) faisant face à la feuille imprimée (5) précédemment cousue,
    caractérisé en ce que l'au moins une aiguille à crochet (14) est, avant la saisie de la boucle de fil (25), tournée autour de son axe longitudinal (27) de telle sorte que le crochet (15) de cette aiguille à crochet (14) est positionné sur son côté opposé à l'aiguille à coudre (13) et dans un angle de +/- 85°, de préférence dans un angle de +/- 50° et tout particulièrement dans un angle de +/- 15° par rapport à un premier plan vertical (34) à travers le pli (10) de la feuille imprimée (5) à piquer.
  2. Procédé selon la revendication 1, caractérisé en ce que l'au moins une aiguille à crochet (14) est, avant traversée, s'effectuant de l'intérieur vers l'extérieur, de l'anneau (22) de la feuille imprimée (5) précédemment cousue ainsi que du pli (10) de la feuille imprimée (5) à coudre, tournée autour de son axe longitudinal (27) de sorte que son crochet (15) est positionné dans une position initiale de rotation dans un deuxième plan (32) vertical et à angle droit par rapport au pli (10) de la feuille imprimée (5) à coudre et sur un côté de l'aiguille à crochet (14) se détournant de la feuille imprimée (5) précédemment cousue.
  3. Procédé selon la revendication 2, caractérisé en ce que pour chaque feuille imprimée (5) à coudre, les angles de rotation correspondants (a) de l'au moins une aiguille à crochet (14) autour de son axe longitudinal (27) depuis la position de rotation initiale du crochet (15) de l'au moins une aiguille à crochet (14) sont déterminés en se basant sur des informations sur le type de point à pratiquer lors de la couture des feuilles imprimées (5) d'un ordre de fabrication et sur la séparation des corps d'ouvrage (6) à produire enregistrées dans une commande de machine (35) d'un dispositif (1) de couture des feuillets ou appliquées sur au moins une des feuilles imprimées (5) à coudre, l'au moins une aiguille à crochet (14) est tournée conformément à l'angle déterminé (a) et son crochet (15) est positionné conformément.
  4. Procédé selon la revendication 3, caractérisé en ce que la rotation de l'au moins une aiguille à crochet (14) de l'angle de rotation déterminé (a) et le positionnement respectif du crochet (15) s'effectuent avec un entraînement (41), en particulier avec un servomoteur (40) .
  5. Dispositif de couture des feuillets, lors duquel des feuilles imprimées (5) individuelles pliées sont alignées à plat l'une contre l'autre et sont cousues en un corps d'ouvrage (6) avec un fil de reliure (2), dans lequel le dispositif (1) comporte au moins une aiguille à coudre (13) dotée d'un chas (12) et au moins une aiguille à crochet (14) disposée à distance de l'aiguille à coudre (13) dotée d'un évidement (16) d'un seul côté formant un crochet (15) servant à recevoir le fil de reliure (2) l'aiguille à crochet (14) est réalisée comme rotative autour de son axe longitudinal (27) pour coudre une feuille imprimée (5), caractérisé en ce que l'aiguille à crochet (14) est réalisée pour tourner à un angle de rotation arbitraire (α) autour de son axe longitudinal (27) et le crochet (15) est réalisé comme positionnable dans une position de rotation arbitraire.
  6. Dispositif selon la revendication 5, caractérisé en ce que le dispositif (1) possède un équipement (36) relié de manière opérante à une commande de machine (35) destiné à faire tourner l'au moins une aiguille à crochet (14) autour de son axe longitudinal (27), dans lequel l'équipement (36) comporte un maintien (37) pour l'au moins une aiguille à crochet (14), un élément d'ajustement (39) destiné à faire tourner l'au moins une aiguille à crochet (14) et un entraînement (41) pour l'élément d'ajustement (39).
  7. Dispositif selon la revendication 6, caractérisé en ce que l'entraînement (41) comporte un servomoteur (40).
  8. Dispositif selon la revendication 6, caractérisé en ce que l'élément d'ajustement (39) comporte une crémaillère (38).
EP18204160.8A 2017-11-08 2018-11-02 Procédé et dispositif de couture des feuillets Active EP3482966B1 (fr)

Applications Claiming Priority (1)

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CH13472017 2017-11-08

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EP3482966A1 EP3482966A1 (fr) 2019-05-15
EP3482966B1 true EP3482966B1 (fr) 2021-03-10

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CN113291078B (zh) * 2021-07-28 2021-11-16 江苏金典高科数码有限公司 线装机及其工作方法

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CH24452A (de) 1902-05-12 1903-01-15 Vormals F Martini & Co Ag Fadenheftmaschine
FR403996A (fr) 1909-06-12 1909-11-19 Our La Reliure Et L'industrie Textile S. A.) Perfectionnements aux machines à brocher, au fil et à leurs aiguilles à crochet
CH55948A (de) 1911-05-11 1912-09-16 Bruggen Helwig & Egger Maschf Fadenheftmaschine
DE2806062A1 (de) * 1978-02-14 1979-08-16 Rahdener Maschf August Vorrichtung zum fadenheften von mehreren lagen zu einem buchblock
JPH05238176A (ja) * 1991-09-03 1993-09-17 Grapha Holding Ag 折り丁から成る書籍、雑誌等を綴じる方法及び該方法を実施する装置
US5984603A (en) * 1993-12-07 1999-11-16 Grapha-Holding Ag Apparatus for producing book blocks from a stack of signatures
US5887532A (en) 1996-09-25 1999-03-30 Grapha-Holding Ag Method and apparatus for manufacturing book blocks
EP2650420B1 (fr) * 2012-04-10 2015-07-08 Müller Martini Holding AG Procédé et dispositif de couture de blocs de livre et voie de fabrication de livres avec un tel dispositif

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EP3482966A1 (fr) 2019-05-15
US10807402B2 (en) 2020-10-20

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