EP0663302B1 - Agrégat pour poser et souder des fils de brochage - Google Patents

Agrégat pour poser et souder des fils de brochage Download PDF

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Publication number
EP0663302B1
EP0663302B1 EP19940111900 EP94111900A EP0663302B1 EP 0663302 B1 EP0663302 B1 EP 0663302B1 EP 19940111900 EP19940111900 EP 19940111900 EP 94111900 A EP94111900 A EP 94111900A EP 0663302 B1 EP0663302 B1 EP 0663302B1
Authority
EP
European Patent Office
Prior art keywords
thread
conveyor
plate
folded sheet
sealing machine
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
EP19940111900
Other languages
German (de)
English (en)
Other versions
EP0663302A1 (fr
Inventor
Joachim Streubel
Claus-Dieter Redmer
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.)
MBO Postpress Solutions GmbH
Original Assignee
Maschinenbau Oppenweiler Binder 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
Application filed by Maschinenbau Oppenweiler Binder GmbH and Co KG filed Critical Maschinenbau Oppenweiler Binder GmbH and Co KG
Publication of EP0663302A1 publication Critical patent/EP0663302A1/fr
Application granted granted Critical
Publication of EP0663302B1 publication Critical patent/EP0663302B1/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
    • B42B—PERMANENTLY ATTACHING TOGETHER SHEETS, QUIRES OR SIGNATURES OR PERMANENTLY ATTACHING OBJECTS THERETO
    • B42B4/00—Permanently attaching together sheets, quires or signatures by discontinuous stitching with filamentary material, e.g. wire

Definitions

  • the invention relates to a thread sealing machine with a driven, endlessly revolving, transporting elements for the folded sheet-carrying lower conveying element, with an endlessly revolving, plate-shaped conveying elements driven in synchronism with the lower conveying element in a predetermined division for holding the folded sheets on the lower conveying element, upper conveying element with Puncture openings provided in the plate-shaped transport elements of the upper conveying member, with a puncture device controlled synchronously with the upper conveying member and assigned to the puncture openings for piercing thread pieces fed from the upper conveying member and cut to length according to a thread clip to be formed into the folded sheets to form the thread clips and with one of the puncturing devices downstream of the folded sheets in the transport direction and arranged below the folded sheets, biased against the folded sheets to seal the thread clip n.
  • the upper conveyor element is a thread plate chain, which is used to form and carry the thread pieces according to the thread clip length until the legs of the thread clip to be formed are inserted into the folded sheet and for transporting the folded sheets through the functional points, piercing and sealing the legs of the thread clips until they are handed over to a folding device.
  • the lower conveyor organ is a conveyor chain that only has a transport function for the folded sheets.
  • the aligned folding sheets are transported between the upper thread plate chain and the lower conveyor chain to a puncturing device, at which the supplied, cut pieces of thread are inserted into the folding sheets to form the back of the clip and the clip legs.
  • the clamp legs are sealed by the heating rail, the heating strip of which presses against the clamp legs and the paper of the folded sheet with the required contact pressure.
  • the shape of the plate-shaped transport elements of the upper thread plate chain which is functionally related to the formation of the clamp, leads to an insufficient pressure distribution on the thread clamp in the area of the sealing.
  • the reason for this is the doubling of the thread in the front staple leg, which lies under the back of the staple, and the fact that the pressure area of the plate-shaped transport element is too short with respect to the rear staple leg.
  • the plate-shaped transport element, which is intended to press on the two clamp legs, cannot compensate for the differences in thickness due to its overlap with a flat surface, which leads to inadequate sealing, especially of the rear clamp leg.
  • the object on which the invention is based is therefore to design the thread sealing machine of the type mentioned at the outset in such a way that proper formation and sealing of the thread clips is ensured.
  • the transport elements of the further upper conveyor element can be plate-shaped transport elements.
  • the functional area relating to the staple formation for the upper first conveying member ends after the thread staple is inserted.
  • the upper conveyor is compared to the design of the thread sealing machine according to the prior art Technology limited to this functional process.
  • the first upper conveyor element in the form of the thread plate chain is steered out of the plane of the sheet so that it no longer reaches the heating rail. This means that contamination with heat sealing material such as polypropylene can no longer occur.
  • the further transport of the folded sheets is now taken over by the subsequent further upper conveying element, which is driven synchronously with the first conveying element via an intermediate gear.
  • the plate-shaped transport elements of the further upper conveyor element which is assigned to the sealing area, are advantageously attached with half the division of the plate-shaped transport elements of the first upper conveyor element. This means that, based on the length, the number of plate-shaped transport elements of the upper conveying element assigned to the sealing area is twice as large as that of the plate-shaped transport elements of the first upper conveying element, which is assigned to the functional area bracketing.
  • the plate-shaped transport elements of the further upper conveying member assigned to the sealing area no longer require any functional features such as are required for the formation of clips, for example the puncture openings. Due to the reduced dimension of the plate-shaped transport elements due to the halving, a more flexible pressure distribution is achieved with thickness fluctuations caused by the thread.
  • each bracket leg can be one Thread clips can be individually pressed on by a plate-shaped transport element.
  • Different staple thicknesses namely double the thread thickness for the front staple leg and single thread thickness for the rear staple leg, no longer have a disadvantageous effect when sealing.
  • At least one machine-mounted guide roller is provided opposite the heating rail on the top of the folded sheet.
  • the guide rollers can rest on the upper sides of the plate-shaped transport elements parallel to the folded sheet contact surfaces.
  • a fixed upper limit is achieved by the guide rollers arranged above the plate-shaped transport elements in the region of the longitudinal extension of the heating bar of the heating rail, that is to say along the sealing line. Changes in the position of the plate-shaped transport elements can be compensated for by manufacturing tolerances. Furthermore, the counterpressure behavior of the further upper conveyor element is improved, which favors the sealing effect.
  • Another embodiment is that one or more guide rollers are arranged directly on the folded sheet above the heating rail.
  • the further upper conveying member assigned to the heating rail can be designed like the lower conveying member.
  • the guide rollers which are mounted on a machine-side bar or on a machine-side block, are then used for the pressure absorption in the area of the heating rail.
  • the folded sheet is gripped between the upper and the lower conveyor and transported over the heating rail, the The strip of the heating rail presses the folded sheet against the guide rollers and thereby seals the thread clips. Due to the line contact of the rolls, even with fluctuations in thickness over the entire length of the thread clip, good sealing of the thread on the folded sheet is guaranteed at every point.
  • the upper conveying member is thus divided into a first upper conveying member associated with the thread clip formation and into a further conveying member associated with the heating rail, whereby the functional reliability of the chamfering clip formation and the sealing of the thread is improved.
  • the plate-shaped transport elements of the first conveying element can no longer be heated by the heating rail or contaminated or glued by sealing medium, thereby eliminating a major cause of missing and loose thread clips.
  • the pressing of the thread clip and thereby the sealing of the clip legs is evened out. Overall, an improved thread sealing quality is achieved with the thread sealing machine according to the invention and thus the binding quality of the end product is increased.
  • the thread sealing machine shown in FIG. 1 has a lower conveying element 21 in the form of a conveyor chain which carries transport elements 22 and is endlessly arranged around sprockets 23 and 24 which are spaced in the longitudinal direction of the machine, one of the sprockets 23 or 24 being driven. Folded sheets, not shown in FIG. 1, are applied to the lower conveying element 21 in the direction of arrow 41.
  • a heating rail 25 with a heating strip 26, which is biased upwards by springs 27, is assigned to the lower conveying member 21 in its section on the fold sheet outlet side.
  • a first upper conveyor element 11 in the form of a thread plate chain with plate-shaped transport elements 12 is provided on the folding sheet inlet side, which rotates endlessly via chain wheels 16, 17 and 18, the first upper conveyor element 11 being driven synchronously with the lower conveyor element 21 via the chain wheel 18 .
  • a puncture device 13 with needles 14 is provided between the sprocket 18 on the side of the folding sheet infeed and the sprocket 17 arranged at a distance, to which appropriately arranged and dimensioned puncture openings 15 in each plate-shaped transport element 12 are assigned.
  • the puncturing device 13 interacts synchronously with the lower conveying member 21 and the upper conveying member 11 via a gear, not shown.
  • the upper run of the lower conveyor 21 and the lower run of the upper conveyor 11 take between them aligned and fed at a predetermined distance folding sheets and transport them to the puncture device 13.
  • the upper conveyor 12 transports from a thread cutting station, not shown, in the required length cut pieces of thread to the puncture device 13, where with the help of the needles 14 and the puncture openings 15 the punctures in the conveyed Folded sheets are executed and a thread clip with a thread back and with thread legs is created from the thread piece.
  • the upper first conveyor element 11 Before the upper first conveyor element 11 reaches the heating rail 26, it is deflected upward out of the movement path around the chain wheel 17 and the driven chain wheel 16.
  • a further upper conveyor 31 is provided in the area of the heating rail 25, which has transport elements 32 which, in cooperation with the transport elements 22 of the lower conveyor 21, capture the folded sheet fed by the puncturing device 13 and transport it along a sealing line which starts from the Heating strip 26 of the heating rail 25 is formed.
  • the further upper conveying member 31, which can also be referred to as a sealing chain, is endlessly guided around chain wheels 33, 34 and 35, the chain wheel 34 being driven synchronously via a drive chain 36 from the chain wheel 16.
  • Guide rollers 37 are mounted on a roller carrier 38 in a machine-fixed manner above the heating strip 26.
  • the further upper conveying element 31 which rotates endlessly in the area of the heating strip 26, carries plate-shaped transport elements 32 which cooperate with the transport elements 22 and the lower conveying element 21 transport the folded sheets 40, the heating strip 26 extending in the area of the thread clips formed by the piercing device 13 and the guide rollers 37 being in engagement with the upper side of the plate-shaped transport elements 32 above the heating strip 26 and thus the sealing line.
  • the transport elements 32 of the further upper conveying member 31 are designed in the same way as those of the lower conveying member 21.
  • the transport elements 22 and 32 grip the folded sheets 40 laterally from the heating rail 25, the heating strip 26 of which is pressed against the folded sheet 40 by the springs 27 via the heating rail 25.
  • the counterpressure is exerted on the upper side by the guide rollers 37 held on the roller carrier 38, which are in direct contact with the upper side of the folded sheet 40.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Package Closures (AREA)

Claims (7)

  1. Machine à souder des fils de brochage comportant :
    - un organe d'acheminement (21) inférieur entraîné, circulant sans fin, portant des éléments de transport (22) pour des feuilles pliées (40) posées dessus,
    - un organe d'acheminement (11) supérieur, actionné de façon synchrone à l'organe d'acheminement (21) inférieur, circulant sans fin, en forme de plaque et portant des éléments de transport (12) en division prédéfinie pour le maintien des feuilles pliées (40) sur l'organe d'acheminement (21) inférieur,
    - des ouvertures de piqûre (15) prévues dans les éléments de transport (12) en forme de plaque de l'organe d'acheminement (11) supérieur,
    - un dispositif de piqûre (13) commandé de façon synchrone à l'organe d'acheminement (11) supérieur, associé aux ouvertures de piqûre (15) destiné à piquer des morceaux de fil, amenés de l'organe d'acheminement (11) supérieur, tronçonnés suivant une agrafe à fil à développer, dans les feuilles pliées (40) afin de former les agrafes à fil et
    - un rail chauffant (25), disposé en aval du dispositif de piqûre (13) dans le sens de transport (41) des feuilles pliées (40) et au-dessous des feuilles pliées (40), précontraint contre les feuilles pliées (40), destiné à souder les agrafes à fil,
    - dans laquelle est prévu, dans la zone de l'extension longitudinale du rail chauffant (25), un autre organe d'acheminement (31) supérieur circulant sans fin, disposé en aval, dans le sens de transport (41) des feuilles pliées (40), du premier organe d'acheminement (11) supérieur portant les éléments de transport (12) en forme de plaque avec les ouvertures de piqûre (15), et entraîné de façon synchrone à ce premier organe d'acheminement (11) et
    - l'autre organe d'acheminement (31) supérieur porte des éléments de transport (32) situés sur la feuille pliée (40).
  2. Machine à souder des fils de brochage selon la revendication 1, caractérisée en ce que les éléments de transport (32) de l'autre organe d'acheminement (31) supérieur sont des éléments de transport en forme de plaque.
  3. Machine à souder des fils de brochage selon les revendications 1 ou 2, caractérisée en ce que les éléments de transport (32) en forme de plaque de l'autre organe d'acheminement (31) supérieur sont ajoutés à la moitié des éléments de transport (12) en forme de plaque du premier organe d'acheminement (11) supérieur.
  4. Machine à souder des fils de brochage selon l'une des revendications 1 à 3, caractérisée en ce que les deux organes d'acheminement (11, 37) supérieurs sont, relativement à leur sens de transport, mobiles l'un par rapport à l'autre.
  5. Machine à souder des fils de brochage selon l'une des revendications précédentes, caractérisée en ce qu'au moins un galet de guidage (37) logé fixement à la machine (33) est prévu en face du rail chauffant (25) sur le côté supérieur de la feuille pliée.
  6. Machine à souder des fils de brochage selon la revendication 5, caractérisée en ce que des galets de guidage (37) sont placés sur les faces supérieures, parallèles aux surfaces de contact avec la feuille pliée, des éléments de transport (32) en forme de plaque.
  7. Machine à souder des fils de brochage selon la revendication 1, caractérisée en ce que un ou plusieurs galets de guidage (37) sont disposés directement sur la feuille pliée (40) située au-dessus du rail chauffant (25).
EP19940111900 1994-01-17 1994-07-29 Agrégat pour poser et souder des fils de brochage Expired - Lifetime EP0663302B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4401153 1994-01-17
DE19944401153 DE4401153C1 (de) 1994-01-17 1994-01-17 Fadensiegelmaschine

Publications (2)

Publication Number Publication Date
EP0663302A1 EP0663302A1 (fr) 1995-07-19
EP0663302B1 true EP0663302B1 (fr) 1997-05-02

Family

ID=6508063

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19940111900 Expired - Lifetime EP0663302B1 (fr) 1994-01-17 1994-07-29 Agrégat pour poser et souder des fils de brochage

Country Status (2)

Country Link
EP (1) EP0663302B1 (fr)
DE (1) DE4401153C1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19960445A1 (de) * 1999-12-15 2001-06-21 Heidelberger Druckmasch Ag Vorrichtung zum Siegeln von Heftfäden

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD95830A1 (fr) * 1971-03-10 1973-02-20
GB1333829A (en) * 1971-05-14 1973-10-17 Polygraph Leipzig Method and apparatus for thread-sealing
CH591960A5 (en) * 1973-11-13 1977-10-14 Polygraph Leipzig Machine for forming wire clip blanks - can be programmed for number of bends through low power electromagnet (SW240676)

Also Published As

Publication number Publication date
DE4401153C1 (de) 1995-05-11
EP0663302A1 (fr) 1995-07-19

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