EP0548444A1 - Vorrichtung zum Aufwickeln von Bahnen und Spule hierfür - Google Patents

Vorrichtung zum Aufwickeln von Bahnen und Spule hierfür Download PDF

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Publication number
EP0548444A1
EP0548444A1 EP91830582A EP91830582A EP0548444A1 EP 0548444 A1 EP0548444 A1 EP 0548444A1 EP 91830582 A EP91830582 A EP 91830582A EP 91830582 A EP91830582 A EP 91830582A EP 0548444 A1 EP0548444 A1 EP 0548444A1
Authority
EP
European Patent Office
Prior art keywords
strip
reel
shaped element
machine according
gripper
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.)
Withdrawn
Application number
EP91830582A
Other languages
English (en)
French (fr)
Inventor
Andrea Tagliabue
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.)
FIN 5 SpA
Original Assignee
FIN 5 SpA
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 FIN 5 SpA filed Critical FIN 5 SpA
Priority to EP91830582A priority Critical patent/EP0548444A1/de
Publication of EP0548444A1 publication Critical patent/EP0548444A1/de
Withdrawn legal-status Critical Current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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/28—Attaching the leading end of the web to the replacement web-roll core or spindle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/18—Constructional details
    • B65H75/28—Arrangements for positively securing ends of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/41—Winding, unwinding
    • B65H2301/413—Supporting web roll
    • B65H2301/4137—Supporting web roll on its outer circumference

Definitions

  • the present invention relates in general to machines for winding strip materials onto reels.
  • the present invention has been developed with particular attention to its possible use in photographic laboratories, particularly for winding strips of photographic paper coming from a developing machine onto reels.
  • the strips of photographic paper are passed through the developing machine with the use of a motor-driven entrainment belt (the so-called "leader").
  • the leader belt moves along an endless path with at least one active portion in which the paper passing through the developing machine is entrained.
  • the strip of paper is connected to the leader belt by entrainment devices, currently known as "grippers", each including an elongate shank or rod to which the front end of the paper strip is coupled (and around which it is usually wound) as well as an end portion with coupling formations which enable the gripper to be connected to the leader belt, usually in a general snap-engagement arrangement.
  • grippers each including an elongate shank or rod to which the front end of the paper strip is coupled (and around which it is usually wound) as well as an end portion with coupling formations which enable the gripper to be connected to the leader belt, usually in a general snap-engagement arrangement.
  • the strip of paper emerges from the developing machine at a speed, for example, of the order of 20-25 meters per minute with the front end of the strip connected to and possibly wound around the gripper which in turn is connected to the leader belt.
  • the front end of the paper strip is released from the gripper.
  • This operation is carried out by an operator who, after finding (for example, as a result of a sound and/or light signal emitted automatically by the developing machine) that the strip of paper is emerging from the machine, acts upon the front end of the strip, tearing its end portion which is wound around the gripper and then feeding the paper strip into an underlying reel so that it can be wound thereon.
  • the object of the present invention is to provide a machine which can satisfy this requirement.
  • the present invention is based on a solution in which the gripper is not removed before the paper is rewound but becomes an active element in the operation.
  • the weight of the gripper can lead the paper, which is guided by the radial notch or another suitable shape, into the hub of the reel and, from this position, can provide the necessary opposition to the initial movement of the reel which would otherwise tend to lose contact with the end of the paper strip.
  • the winding of the paper without tearing or cutting the strip of paper to remove the gripper which, on the contrary, is kept within the reel enables the strip of paper to be fixed to the hub of the winding reel without the need for more complex solutions.
  • the paper strip is torn above the gripper, which is thus removed, and the paper is then wound onto the reel manually.
  • a machine for automatically winding onto a reel a strip material constituted, in the embodiment illustrated, by a strip of photographic paper C emerging from a developing machine S is generally indicated 1.
  • the strip of paper C is entrained through the developing machine S towards the machine 1 by being connected to an entrainment belt or "leader" 2, that portion of the path of the latter which is between the output of the developing machine S and the machine 1 being visible in Figure 1.
  • This portion of the leader 2 includes an upper pass which entrains the strip C and which extends from an output roller 3 at the output of the developing machine S to form a horizontal portion between two rollers 4.
  • the leader 2 and the paper strip C slide along a viewing surface 5 in a position in which they are easily visible to an operator who wishes to inspect the quality of the photographs on the sheet of paper C.
  • the upper or active pass of the leader 2 (which is intended to entrain the paper C) passes around the roller 4 and is directed vertically towards a further roller 6 and then enters the actual operating zone of the machine 1 (the reeling machine) by means of a roller or a pair of contrarotating rollers 7. From the position thus reached, the sheet of paper C is available for the reeling operation.
  • the leader 2 returns towards the developing machine S, passing around a set of rollers which are generally indicated 8 and are usually in positions homologous to and facing the rollers 3, 4, 6 and 7 described above.
  • Each strip of paper C will thus have a respective reeling station such as that which will be described below.
  • the detailed description which refers to one of the reeling stations, is intended also to apply to all the other stations of the machine 1.
  • the paper strip C is connected to the leader 2 which pulls it through the developing machine S and towards the reeling machine 1 by means of entrainment elements 9 currently known as "grippers".
  • Each gripper 9 is generally comparable in shape to a key, having a shank or rod 10 and a head portion 11.
  • the shank or rod 10 is constituted substantially by a stem with a central longitudinal slot 12 which enables the free end or head of the paper strip C to be inserted into the shank 10. This end can be rolled around the shank 10 by the rotation of the gripper 9 relative to the paper strip C, this usually being done manually (according to widely known criteria) upstream of the developing machine S.
  • the head portion 11 of the gripper 9 is constituted substantially by a coupling unit which is intended to be connected to the leader 2 so as to keep the shank 10 oriented perpendicular to the leader 2.
  • the head 11 of the gripper 9 is constituted by a closed annular body including two straight sides which are intended to be oriented perpendicular to the strip 2 (and hence parallel to the shank 10) and two V-shaped sides which form loops projecting inwardly of the head 11.
  • the gripper 9 is usually made of plastics material so that the two V-shaped sides of the head 11 are flexible.
  • the leader can thus be passed beneath the straight sides of the head 11 so that an intermediate portion of the leader 2 passes over the two V-shaped sides of the head, bending them resiliently.
  • the gripper 9 is fixed to the leader 2 sufficiently firmly to ensure that the leader 2 entrains the sheet of paper C with the head portion 11 of the gripper 9 projecting sideways from the paper strip C and connected to the leader 2.
  • a wedge-shaped element 13 Downstream of the output roller or pair of output rollers indicated 7 is a wedge-shaped element 13 positioned very close to the path of the leader 2 like a scraper.
  • the element 13 can thus interfere with the paths of movement of the grippers 9 fitted to the leader 2; when a paper strip C with its head connected to the leader 2 by a respective gripper 9 reaches the position corresponding to the wedge-shaped element 13, the element 13 is thus inserted between the leader 2 and the gripper 9 so as to detach the gripper 9 from the leader 2 (in practice to pull it off) (against the resilient reaction exerted by the two V-shaped sides of the head 11 which grasp the leader 2), separating the paper strip C from the leader 2 which descends from the roller or rollers 7 towards the first of the rollers 8.
  • each developing machine (and hence the reeling machine 1 associated therewith) is generally arranged so that it can operate on several paper strips C in parallel; two reels 15 are therefore visible in the elevational view of Figure 1 for receiving two respective paper strips C advancing in parallel (possibly entrained on two opposite sides of the same leader 2) through the developing machine and towards the reeling machine.
  • the presence of the gripper 9 connected to the free end of the strip has the advantage of making the guiding action of the guides 14 more precise and secure.
  • a characteristic of the reels 15 used in the machine according to the invention is that one or both the lateral cheeks (and more precisely, at least the cheek which is on the same side of the reel 15 as the head 11 of the gripper 9) has a V-shaped radial recess or notch 17 which extends through an angle of the order, for example, of 10 o ⁇ 15 o .
  • the notches 17 are kept aligned with the direction from which the paper strip C is expected to come (that is, upwardly in the embodiment illustrated, in which the strip C falls downwardly from the roller or rollers 7).
  • the length of the gripper 9 is greater than the width (that is, the corresponding dimension) of the reel, it can nevertheless fall until it reaches the hub region 15a of the reel 15, pulling the free end of the strip C with it.
  • the hub 15a preferably also has a perimetral notch or recess 15b so that the gripper 9 can enter the hub 15a, the axis of which is kept horizontal.
  • the reel 15 is moved, in order to wind the paper strip C thereon, by the rollers 16.
  • rollers there are usually a certain number of rollers (four in the embodiment illustrated) for cooperating with the periphery of the reel 15.
  • the rollers have rubberised surfaces (that is, resiliently yielding surfaces) and are mounted on the frame of the reeling machine 1 for rotation about respective horizontal axes which lie on an imaginary cylindrical surface coaxial with the axis of the reel 15 so that the set of rollers 16 is arranged generally like a basin housing the reel 15.
  • the generatrices of the rollers 16 along which they contact the periphery of the reel 15 extend along an imaginary cylindrical surface which has a horizontal axis and whose radius corresponds to that of the periphery of the reel 15.
  • the rollers 16 are driven by a main motor 18 which rotates (for example, by means of a belt transmission 18a) a first roller 19 which is intermediate the innermost rollers 16 to which it transmits its motion by contact.
  • Each of two further rollers 20 is interposed between and in contact with one of the rollers 16 which is driven directly by the roller 19 and the corresponding outer roller 16.
  • Spring formations 21 force the rollers 19 and 20 (which are mounted on floating devices) into rolling contact with the rollers 16 so as to ensure that the motion is safely transmitted.
  • a sensor such as, for example, an optical sensor 22 which operates the motor 18 (by means of a general control unit R of the machine 1, such as a PLC controller) so as to rotate the reel 15 and thus wind the paper strip C thereon.
  • the length of the strip C is usually determined so as to be sufficient to fill the reel 15.
  • the fact that the paper strip is finished is usually detected (in known manner) by sensor elements associated with the developing machine S and/or by other sensor means, for example, optical sensors (indicated schematically 23) associated with the reeling machine 1.
  • sensor elements associated with the developing machine S and/or by other sensor means, for example, optical sensors (indicated schematically 23) associated with the reeling machine 1.
  • optical sensors indicated schematically 23
  • the reel 15 with the paper strip C wound thereon can be removed from the reeling machine 1 to be replaced by a new empty reel 15 ready for the winding of another paper strip C.
  • a reel 15 with the strip C wound thereon can be removed and replaced by an empty reel, onto which a new paper strip is to be wound, by an operator, or - in a particularly advantageous embodiment of the invention - by an automatic device such as a robot which automatically transfers the reel 15 towards further processing stations (for example, finishing stations).
  • an automatic device such as a robot which automatically transfers the reel 15 towards further processing stations (for example, finishing stations).
  • the gripper 9 which is fixed to the end of the paper strip C wound onto the reel 15 and projects axially from the hub 15a of the reel 15, can easily be recovered for reuse by being removed from the reel axially, thus tearing in a controlled manner the end of the paper strip C to which the gripper 9 is connected. Since, when the gripper 9 is removed, the end of the paper strip C is wound onto the hub of the reel 15 and surrounded by a certain number of turns of paper, the tearing of the end as a result of the removal of the gripper 9 takes place in a precise and controlled manner along a tear line which is usually even (and not an uneven and jagged line as usually occurs in machines according to the prior art), enabling the paper strip C to be coupled more easily and precisely to any further automatic processing machine.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Replacement Of Web Rolls (AREA)
EP91830582A 1991-12-23 1991-12-23 Vorrichtung zum Aufwickeln von Bahnen und Spule hierfür Withdrawn EP0548444A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP91830582A EP0548444A1 (de) 1991-12-23 1991-12-23 Vorrichtung zum Aufwickeln von Bahnen und Spule hierfür

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP91830582A EP0548444A1 (de) 1991-12-23 1991-12-23 Vorrichtung zum Aufwickeln von Bahnen und Spule hierfür

Publications (1)

Publication Number Publication Date
EP0548444A1 true EP0548444A1 (de) 1993-06-30

Family

ID=8208992

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91830582A Withdrawn EP0548444A1 (de) 1991-12-23 1991-12-23 Vorrichtung zum Aufwickeln von Bahnen und Spule hierfür

Country Status (1)

Country Link
EP (1) EP0548444A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112897254A (zh) * 2021-03-08 2021-06-04 山东玲珑轮胎股份有限公司 一种改善垫布卷曲质量的工字轮

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1391723A (fr) * 1963-09-16 1965-03-12 Bobine enrouleuse
US4188108A (en) * 1977-05-31 1980-02-12 Lodovico Falomo Device for clipping strips of photographic paper to developers comprising a flat conveyor belt
EP0218978A1 (de) * 1985-10-08 1987-04-22 Agfa-Gevaert AG Vorrichtung zum Transportieren von bandförmigem Material, insbesondere Fotopapier, durch eine Behandlungsmaschine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1391723A (fr) * 1963-09-16 1965-03-12 Bobine enrouleuse
US4188108A (en) * 1977-05-31 1980-02-12 Lodovico Falomo Device for clipping strips of photographic paper to developers comprising a flat conveyor belt
EP0218978A1 (de) * 1985-10-08 1987-04-22 Agfa-Gevaert AG Vorrichtung zum Transportieren von bandförmigem Material, insbesondere Fotopapier, durch eine Behandlungsmaschine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112897254A (zh) * 2021-03-08 2021-06-04 山东玲珑轮胎股份有限公司 一种改善垫布卷曲质量的工字轮
CN112897254B (zh) * 2021-03-08 2024-05-14 山东玲珑轮胎股份有限公司 一种改善垫布卷曲质量的工字轮

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