EP0283851B1 - Méthode et dispositif pour attacher une pince à une bande de guidage - Google Patents

Méthode et dispositif pour attacher une pince à une bande de guidage Download PDF

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Publication number
EP0283851B1
EP0283851B1 EP88103680A EP88103680A EP0283851B1 EP 0283851 B1 EP0283851 B1 EP 0283851B1 EP 88103680 A EP88103680 A EP 88103680A EP 88103680 A EP88103680 A EP 88103680A EP 0283851 B1 EP0283851 B1 EP 0283851B1
Authority
EP
European Patent Office
Prior art keywords
strip
holding part
towing
clip
edges
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
EP88103680A
Other languages
German (de)
English (en)
Other versions
EP0283851A2 (fr
EP0283851A3 (en
Inventor
Siegfried Kurths
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.)
Agfa Gevaert AG
Original Assignee
Agfa Gevaert 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 Agfa Gevaert AG filed Critical Agfa Gevaert AG
Publication of EP0283851A2 publication Critical patent/EP0283851A2/fr
Publication of EP0283851A3 publication Critical patent/EP0283851A3/de
Application granted granted Critical
Publication of EP0283851B1 publication Critical patent/EP0283851B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D3/00—Liquid processing apparatus involving immersion; Washing apparatus involving immersion
    • G03D3/08—Liquid processing apparatus involving immersion; Washing apparatus involving immersion having progressive mechanical movement of exposed material
    • G03D3/13—Liquid processing apparatus involving immersion; Washing apparatus involving immersion having progressive mechanical movement of exposed material for long films or prints in the shape of strips, e.g. fed by roller assembly
    • G03D3/135—Liquid processing apparatus involving immersion; Washing apparatus involving immersion having progressive mechanical movement of exposed material for long films or prints in the shape of strips, e.g. fed by roller assembly fed between chains or belts, or with a leading strip
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49863—Assembling or joining with prestressing of part
    • Y10T29/49876—Assembling or joining with prestressing of part by snap fit
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53657—Means to assemble or disassemble to apply or remove a resilient article [e.g., tube, sleeve, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53709—Overedge assembling means

Definitions

  • the invention relates to a method and a device according to the preamble of claim 1 and claim 5
  • a device is e.g. B. is known from DE-PS 25 12 826, in which a drag band is pressed into the recess of a shaped in the manner of a single-shell hyperboloid form roller by a pressure roller, so that the side edges of the drag belt are bent together to a distance that is less than the distance of the hook ends of a holding part of a clip to be fastened to the drag belt.
  • the deformed drag band is introduced into the interior of the holding part by the feed movement of a holder for the clamp, and the return of the drag band to the approximately extended position is made possible by return movement of the bending stamp. Since the width of the drag belt is slightly larger than the width of the interior for the belt in the holding part of the clip, the remaining elastic band deformation fixes and entrains the clip due to frictional forces.
  • the object of the invention is to eliminate this separate delivery process.
  • the described method for attaching the clips is possible both with clips according to the teaching of DE-PS (German patent application P 35 35 852.1) with a flat shape which has an opening on the holding part which corresponds in length and width to approximately the width of the drag band and into which opening the projections encompassing the side edges of the drag band protrude.
  • This fastening method can also be used with clamps, the holding part of which has two hooks which are bent out of the plane of a sheet metal strip and which likewise comprise the side edges of the drag belt. This creates a space between the hooks that is slightly narrower than the towing band width and slightly higher than the towing band thickness.
  • a device for carrying out the method according to claim 1 results from claim 5 and the following device claims 6 to 12.
  • a clip device is shown schematically in a perspective view, which is constructed on a base plate 1.
  • the base plate 1 has a slot-shaped opening 1a through which a drag band 2 made of elastic plastic is passed from bottom to top.
  • the drag belt 2 is guided by two guide rollers 3 engaging on the side edges, only one of which is visible and which is freely rotatably mounted in a bearing block 4.
  • the drag band 2 runs between a support roller 5, which is freely rotatably mounted in a bearing block 6, and a receptacle for clips 8.
  • the support roller 5 has a medium, deep recess approximately in the form of a hyperbola as the generator of this roller circumference with two relatively narrow cylindrical edges on which the drag belt runs in the normal state of the device.
  • the clip 8 has a shape that can be seen in FIG. 2 with a holding part 8a, which is enclosed by two hook-like projections 8c and has an interior which is somewhat higher, but less wide than the drag band 2. If the drag band is in this interior space of the holding part 8 introduced way to be described, it almost stretches into the flat position and then lies with its side edges under relatively great force on the inner surface of the hooks 8c, so that the clamps are carried along by the drag belt with relatively large frictional forces.
  • An arm 8b is welded to the holding part 8a, which is bent as a unitary sheet metal part, and has a longitudinal slot in a known manner, through which a photographic copying material can be threaded and looped around the arm. In this way, a beginning of a roll of paper tape fastened to the clamp arm can be passed through a plurality of treatment containers of a photographic processing machine parallel to the running path of the drag belt 2.
  • the clip receptacle 7 is also provided with a slot on the side facing away from the clip arm 8b, so that clips can be inserted both in the position shown and in a position with the clip arm 8b on the other side.
  • a drive 9 for a clip stamp 10 is also attached.
  • the drive can e.g. B. a pneumatic cylinder, but also an electromagnet or - if none of these types of drive is available - a spring-loaded spring or done directly by hand.
  • the movable stamp 10 protrudes from the stamp drive 9 and is displaceably guided in a stamp guide 12, which is also fastened on the base plate 1.
  • the bending punch 10b is arranged in such a way that, in the advanced state, it reaches the drag band just below the holding part 8a of the clips 8 and below the clip receptacle 7 and can press it into the recess in the die roll 5.
  • FIG. 2 the different phases of a clip-on process are each shown in a section perpendicular to the tape running direction in chronological order.
  • the tape running direction can be horizontal according to FIG. 2 or vertical as in FIG. 1.
  • the embodiment of FIG. 2 differs from that 1 in that the support of the drag band against the pressure of the bending die 10b is not carried out by a rotatable roller 5, but by a die 13 fixed to the device .
  • a guide 13d is worked out, which corresponds in its width and height to the holding part 8a of the bracket 8. Otherwise, the profile corresponds to the clamp arm 8b, so that its offset can also contribute to the longitudinal guidance on an obliquely designed guide step 13e of the die 13.
  • a recess 13b is provided under the drag belt 2, which can be tapered away from the belt, but need not be.
  • the width of the support surface 13f for the two side edges of the drag belt 2 extends in each case only over a small part of the total drag belt width; however, the distance between the two inner ends 13c of the support surface is greater than the distance between the inner edges of the hook parts 8c of the holding part 8a of the clip 8a above.
  • the clamp 8 is held in its position shown by a device-fixed channel cover 14, which with a corresponding slot 14a also represents the guide 12 for the bending punch 10b.
  • the distance between cover 14 and die 13 is determined so that a clamp 8 in the channel on the drag belt 2 or on its side guides 13a can be moved freely, but not with a lot of air.
  • the passage space for the tow band 2 is dimensioned so that in the absence of one Clip 8 can pass freely through a drag band connector wound as a coil spring.
  • the stamp 10b is retracted behind the guide surface of the cover 14, while the drag belt moves in the stretched state with the air required for free movement between the side guides 13a of the die.
  • a trigger pulse and the corresponding drive for. B. a pneumatic drive that moves the punch 10b down, it bends the drag belt 2 down. However, its edges are guided between the holding part 8a of the clamp and the support surfaces 13f of the die in the original band plane, so that the tow band is bent twice with two turning points.
  • the side edges of the drag band have already moved somewhat inwards in accordance with the deflection, so that there is symmetrically a gap between the side guides 13 a and the side edges of the band 2.
  • the stamp 10b has already covered a larger part of its working stroke and has bent the strip correspondingly downwards.
  • the band edges are still between the Hook of the holding part 8a and the support surface 13f held, but only with a very small width.
  • the approach to a V-shaped bending line in the area of the edges is interrupted, even if the edges no longer run exactly in the original plane of the drag belt.
  • the punch 10b is immersed so far in the die that the two band edges are pulled over the hook edges 8c and are snapped up into the interior of the holding part 8a using the bending stress of the band edges.
  • the side edges stretch, so that the tow band is only bent in the middle.
  • the drag band extends again, so that the side edges of the drag band move successively towards the lateral boundaries of the interior of the holding part 8a of the clip.
  • the drag band is again approximately stretched, so that the clamp is pulled out of the clamp receptacle 7 upwards or forwards by frictional forces as soon as the drag band runs.
  • FIG. 3 shows a longitudinal section through the clip-on device according to FIG. 2, from which it can be seen is that the stamp 10b has a fork shape, which fork engages around the holding part 8a of the clip in the tape running direction on both sides.
  • the movement phases according to FIG. 2 can be carried out most simply when the belt is at a standstill. Since such a trailing belt standstill in the treatment part of the developing device is not sustainable due to the required accuracy of the dwell time, such a standstill can only be achieved with a relatively large amount of equipment, e.g. B. according to the teaching of German Patent 22 46 313. On the other hand, the speed of movement of the drag belt compared to the speed of movement of a properly driven stamp 10b is small, so that the time delay can be kept very low compared to a continuous run.
  • a further possibility is the design according to FIG. 1, if the counter support of the drag belt 2 is carried out by a roller 5 and z. B. is also arranged on the stamp 10b a role for low-friction pressure. The clamping process can then be carried out on the running belt.
  • Clamping to the running belt is also possible via part of the processes of the clamping process if the punch 10b and the die 14 are made of a material on which the drag belt 2 slides well.
  • This can e.g. B. a body made of polyamide with polished surfaces and rounded edges 13c.
  • the drag belt is then braked during the movement phases according to FIGS. 2b and 2c, but can still continue to run at almost the original speed.
  • the bracket itself is still held by the fork shape of the stamp 10b. A firm clinging takes place, however, only when the drag belt 2 is stretched after the movement phase shown in FIG. 2e, when the plunger 10b has almost released the clip.
  • a further reduction in flexing work in the drag belt during the clip-on process can be achieved if the recess 13b in the die is not purely prismatic, but, as shown in FIG. 4, tapers from both sides towards the center of the recess 13b.
  • the principles of clipping without infeed of a clip holder towards the tow band can also be used with clips of a flat shape according to the teaching of DE-PS 35 35 852, which have an opening in the holding part which corresponds in length and width to approximately the width of the tow band. The side edges of the drag band protrude into this opening. 5 and 6, the clip device for such a clip 15 is shown.
  • the die 13 has approximately the same shape as in FIGS. 3 and 4, but in addition a spring-loaded ejector 16 is provided, which is mounted in a housing 17 below the die 13. This accelerates the return movement of the drag belt from the die after the snap-in Band edges in the holding part of the clip.
  • Such an ejector is also useful in the embodiment according to FIG. 2.
  • the stamp 18 for deforming the drag tape 2 engages in the opening of the clip 15, but has a step 18a in the area of the clip edges 15a, which bends the clip edges 15a at the lower point of reversal so that the projections 15b are bent toward the drag tape.
  • This makes it easier to snap the edges of the drag band behind the projections 15b, or enables the bending punch to be reversed even with less band deflection.
  • the process of clamping the trailing belt edges between the die 13 and the clamp 15 takes place in the same way as in the clamp according to FIGS. 2-4 until the snapping of the trailing band edges into the opening of the clamp.
  • the recess in the die 13 is expediently not prismatic, but tapering towards the middle of the die.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Advancing Webs (AREA)
  • Clamps And Clips (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Claims (13)

  1. Procédé de pose d'une agrafe (8, 15), qui guide le début d'une matière en forme de bande, sur un ruban d'entraînement (2) d'un appareil de développement photographique qui comporte de multiples bacs de traitement, la matière en forme de bande étant guidée parallèlement au ruban d'entraînement (2) dans les bacs de traitement, ladite agrafe (8, 15) comprenant une partie de retenue (8a) qui enveloppe les bords du ruban d'entraînement par des saillies (8c, 15b) en forme de crochets, les bords latéraux du ruban d'entraînement (2) étant suffisamment fléchis l'un vers l'autre pendant le processus d'agrafage par des éléments de flexion comportant un poinçon (10b, 18) et une matrice (5, 13) agissant perpendiculairement au plan du ruban d'entraînement pour que la distance des bords du ruban d'entraînement devienne inférieure à la largeur de l'ouverture des crochets (8c, 15b) de la partie de retenue (8a) et les éléments de flexion étant rendus inefficaces à la fin de l'introduction du ruban dans la partie de retenue (8a), caractérisé en ce qu'au début du processus de flexion, le ruban (2) et la partie de retenue (8a) sont guidés symétriquement par rapport au poinçon de flexion (10b, 18) et la partie de retenue (8a) ainsi que le ruban d'entraînement sont maintenus en permanence en contact, en ce que les bords du ruban sont retenus dans le plan initial du ruban, entre les appuis (13a) de la matrice destinés au ruban et le côté de la partie de retenue (8a) qui est tourné vers le ruban d'entraînement (2), jusqu'à l'enclenchement des bords du ruban dans le volume interne de la partie de retenue (8a) et le poinçon de flexion est ramené en position initiale après enclenchement des bords du ruban.
  2. Procédé selon la revendication 1, caractérisé en ce que le ruban d'entraînement (2) est fléchi au voisinage de la partie de retenue de manière qu'avant enclenchement, il ait la forme d'une lettre V aplatie avec des bords parallèles au plan initial du ruban.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le mouvement de retour du ruban d'entraînement (2) approximativement à la position d'extension après l'enclenchement est favorisé par un poinçon (10b) soumis à la force d'un ressort et placé dans la matrice (13).
  4. Procédé selon l'une des revendications précédentes, caractérisé en ce que, lorsqu'il s'agit d'une agrafe (15) qui comprend une partie de retenue (15a) ayant un passage présentant une longueur et une largeur correspondant approximativement à la largeur du ruban d'entraînement (2) et qui comporte des saillies (15b) pénétrant dans ce passage et enserrant les bords du ruban d'entraînement à l'état d'agrafage, le poinçon (18) pénètre dans le passage et des épaulements en retrait (18a) du poinçon font accessoirement fléchir la partie de retenue de manière que les saillies (15b) soient repliées vers le ruban d'entraînement.
  5. Dispositif pour la mise en oeuvre du procédé selon l'une des revendications précédentes 1 à 4, comprenant un ruban d'entraînement (2) destiné au guidage du début de la bande de matière au moyen d'une agrafe (8) dans plusieurs bacs de traitement et comprenant un dispositif d'agrafage comportant des éléments de flexion qui font fléchir l'un vers l'autre les bords du ruban d'entraînement au moyen d'une matrice (5, 13) et d'un poinçon de flexion (10b, 18) de manière qu'ils soient à une distance inférieure à la distance des saillies (8c, 15b) qui enveloppent les bords du ruban, ledit dispositif comprenant également des moyens d'introduction des bords du ruban entre les saillies de la partie de retenue (8a, 15a), caractérisé en ce qu'il comprend un canal destiné à la partie de retenue (8a) et au ruban d'entraînement (2) et dans lequel tous deux sont guidés latéralement en étant superposés symétriquement l'un par rapport à l'autre et en ce que la course de manoeuvre du poinçon de flexion (10b) est calculée de manière que le sens de déplacement s'inverse après enclenchement des bords du ruban d'entraînement dans le volume interne de la partie de retenue (8a).
  6. Dispositif selon la revendication 5, caractérisé en ce que le canal est ouvert pour la partie de retenue (8a) de l'agrafe (9) dans la direction de défilement du ruban d'entraînement (2).
  7. Dispositif selon la revendication 5, caractérisé en ce que le poinçon de flexion (10b) attaque le ruban d'entraînement (2) symétriquement en se dirigeant vers la partie de retenue (8a) de l'agrafe, perpendiculairement à la direction de défilement du ruban, et il est conformé en fourche, en particulier lorsqu'il s'agit d'une agrafe étroite (8) sans passage.
  8. Dispositif pour la mise en oeuvre du procédé selon la revendication 4, caractérisé en ce que, lorsqu'il s'agit d'une agrafe flexible (15) comportant un passage dans la partie de retenue (15a), le poinçon de flexion (18) pénètre dans le passage et comporte un épaulement (18a) qui fait fléchir la partie de retenue (15a), peu avant l'enclenchement des bords du ruban d'entraînement derrière les saillies (15b) pénétrant dans le passage, de manière que ces saillies se déplacent vers le ruban d'entraînement.
  9. Dispositif selon la revendication 5, caractérisé en ce que la matrice (13) est constituée d'un composant solidaire de l'appareil et réalisée en un matériau sur lequel le ruban d'entraînement glisse bien, en particulier en polyamide, et ses arêtes (13c) destinées à faire fléchir le ruban d'entraînement sont arrondies.
  10. Dispositif selon l'une des revendications 5 ou 9, caractérisé en ce que la largeur de l'ouverture comprise entre les surfaces (13f) d'appui des bords du ruban d'entraînement dans la matrice est inférieure à la distance comprise entre les saillies (8c, 15b) de la partie de retenue qui enveloppent le ruban d'entraînement, en particulier d'au moins la valeur correspondant à l'inclinaison des bords du ruban d'entraînement après l'enclenchement.
  11. Dispositif selon la revendication 5, caractérisé en ce que la cavité (13b) de la matrice (13) se rétrécit dans la direction de défilement du ruban d'entraînement (2) des deux côtés vers la ligne de symétrie de l'agrafe (8) en position d'agrafage.
  12. Dispositif pour la mise en oeuvre du procédé selon la revendication 3, caractérisé en ce qu'un éjecteur (16) soumis à la force d'un ressort est disposé dans la matrice (13).
  13. Dispositif selon l'une des revendications précédentes 5 à 12, caractérisé en ce que le poinçon de flexion (10b, 18) est à commande pneumatique, électrique, à ressorts mécaniques bandés ou manuelle.
EP88103680A 1987-03-21 1988-03-09 Méthode et dispositif pour attacher une pince à une bande de guidage Expired - Lifetime EP0283851B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873709412 DE3709412A1 (de) 1987-03-21 1987-03-21 Verfahren und vorrichtung zum anbringen einer klammer an einem schleppband
DE3709412 1987-03-21

Publications (3)

Publication Number Publication Date
EP0283851A2 EP0283851A2 (fr) 1988-09-28
EP0283851A3 EP0283851A3 (en) 1989-10-04
EP0283851B1 true EP0283851B1 (fr) 1992-08-26

Family

ID=6323735

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88103680A Expired - Lifetime EP0283851B1 (fr) 1987-03-21 1988-03-09 Méthode et dispositif pour attacher une pince à une bande de guidage

Country Status (4)

Country Link
US (1) US4853730A (fr)
EP (1) EP0283851B1 (fr)
JP (1) JPS63253944A (fr)
DE (2) DE3709412A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4036015A1 (de) * 1990-11-13 1992-05-14 Wolfgang Koehler Verfahren und vorrichtung zum befestigen von halteklammern an einem band
GB9219664D0 (en) * 1992-09-17 1992-10-28 Kodak Ltd Photographic transport mechanisms
JP3402424B2 (ja) * 1996-05-31 2003-05-06 ノーリツ鋼機株式会社 搬送ベルトとこの搬送ベルトを用いた感光材料搬送装置
US8307524B2 (en) * 2009-07-08 2012-11-13 Ultrafab, Inc. Weatherstrip insertion apparatus and method

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2878924A (en) * 1956-06-21 1959-03-24 Pako Corp Apparatus for handling belt and arm
AT208705B (de) * 1958-09-22 1960-04-25 Agfa Ag Schleppvorrichtung für Bänder, insbesondere für photographische Papierbänder in Rollenentwicklungsmaschinen
US3713649A (en) * 1971-03-18 1973-01-30 Simplex Specialty Co Inc Conveyor system
DE2212689A1 (de) * 1972-03-16 1973-09-20 Agfa Gevaert Ag Vorrichtung zum behandeln eines bandfoermigen materials
DE2246313C3 (de) * 1972-09-21 1978-08-10 Agfa-Gevaert Ag, 5090 Leverkusen Fotografisches Behandlungsgerät für lange Bänder
DE2512826C2 (de) * 1975-03-22 1983-11-10 Agfa-Gevaert Ag, 5090 Leverkusen Fotografisches Gerät mit Schleppbandführung
US4065042A (en) * 1977-02-22 1977-12-27 Eastman Kodak Company Web transporting apparatus
DE3535852A1 (de) * 1985-10-08 1987-04-16 Agfa Gevaert Ag Vorrichtung zum transportieren von bandfoermigem material, insbesondere fotopapier, durch eine behandlungsmaschine

Also Published As

Publication number Publication date
DE3873941D1 (de) 1992-10-01
US4853730A (en) 1989-08-01
EP0283851A2 (fr) 1988-09-28
DE3709412A1 (de) 1988-09-29
EP0283851A3 (en) 1989-10-04
JPS63253944A (ja) 1988-10-20

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