EP0053619A1 - Device at printing plants for providing a web with information. - Google Patents

Device at printing plants for providing a web with information.

Info

Publication number
EP0053619A1
EP0053619A1 EP81901500A EP81901500A EP0053619A1 EP 0053619 A1 EP0053619 A1 EP 0053619A1 EP 81901500 A EP81901500 A EP 81901500A EP 81901500 A EP81901500 A EP 81901500A EP 0053619 A1 EP0053619 A1 EP 0053619A1
Authority
EP
European Patent Office
Prior art keywords
web
strip
unit
feeding
roll
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP81901500A
Other languages
German (de)
French (fr)
Other versions
EP0053619B1 (en
Inventor
Rolf-Arne Larsson
Karl-Axel Gullstrand
Sven Arne Roland Stromberg
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.)
ROLF LARSSON MEKANISK VERKSTAD AB
LARSSON ROLF MEK VERK
Original Assignee
ROLF LARSSON MEKANISK VERKSTAD AB
LARSSON ROLF MEK VERK
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 ROLF LARSSON MEKANISK VERKSTAD AB, LARSSON ROLF MEK VERK filed Critical ROLF LARSSON MEKANISK VERKSTAD AB
Publication of EP0053619A1 publication Critical patent/EP0053619A1/en
Application granted granted Critical
Publication of EP0053619B1 publication Critical patent/EP0053619B1/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H20/00—Advancing webs
    • B65H20/02—Advancing webs by friction roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H20/00—Advancing webs
    • B65H20/24—Advancing webs by looping or like devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
    • B65H23/182—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in unwinding mechanisms or in connection with unwinding operations
    • B65H23/1825—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in unwinding mechanisms or in connection with unwinding operations and controlling web tension
    • 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
    • B65H2301/30—Orientation, displacement, position of the handled material
    • B65H2301/31—Features of transport path
    • B65H2301/311—Features of transport path for transport path in plane of handled material, e.g. geometry
    • B65H2301/3112—S-shaped

Definitions

  • the present invention relates to a device at printing plants for providing a web, preferably a formaliner-perforated paper web, with information.
  • Modern printing plants such as laser printing plants or ink jet printers operate at very high printing speeds and provide prints of 0,7 - 0,8 m/s .
  • One condition for being able to utilize such high speeds at printing plants for e.g. printing forms, is that the web for receiving the print may be fed through the printer at high speed and collect the printed web in such a way that it directly may be used in subsequent-treatment plants such as sheet-formation and/or folding plants. It has long been known various types of devices for feeding webs through printing plants, but these are not suitable for use in modern printing plants.
  • fig. 1 is a side view schematically illustrating a printing plant with a device according to the invention
  • fig. 2 schematically illustrates a brake unit forming part of the plant of fig. 1
  • figs. 3 and 4 schematically illustrate sensors forming part of the plant of fig. 1
  • fig. 5 schematically illustrates a control unit forming part of the plant of fig. 1.
  • the plant shown is adapted for printing a formaliner-perforated paper web 1 and collect said web such that it directly may be used for subsequent treatment.
  • the paper web 1 is intended for the manufacture of forms and subsequent treatment thereof is intended to occur in sheet-formation and/or folding plants.
  • the plant is substantially comprised by a feeding device 2 for feeding the paper web which runs via an inlet sensor 3 to a printer unit 4 for printing information on the web 1.
  • the printed paper web 1 runs via an outlet sensor 5 to a receiving device 6.
  • the feeding device 2 comprises a machine frame 7 with a recess 8 for storing a roll 9 on which the formaliner-perforated web 1 for printing is reeled.
  • the frame 7 further comprises a lifting device for lifting the roll 9 and positioning the same in the recess 8.
  • the lifting device includes a pivotally mounted lifting arm 10 provided with a fork (not shown) for the roll 9 and pivotable by means of a cylinder-piston device 11 forming part of a hydraulic or pneumatic system (not shown).
  • the feeding device 2 also comprises an unrolling device 12 for unrolling the web 1 from the roll 9 and a brake unit 13 for braking the roll 9.
  • the unrolling device 12 has two feed roils 14 and 15 between which the web runs and at least one of said rolls 14, 15 is operated by a driving unit 16.
  • the paper web 1 runs from the roll
  • the arm 20 booperates with a disc brake 22
  • the paper web 1 runs from the unrolling device 12 to the printer unit 4 via the inlet sensor 3, which is adapted to control the unrolling device 12 such that the web portion 1b of the web runs in a slacked condition between the unrolling device 12 and a feeding unit 23 in the printer unit 4.
  • the inlet sensor 3 comprises a container 24 open at the top and in which the web portion 1b is hanging down.
  • a photocell device - comprising a photocell unit - with transmitter and receiver 25, 26 of a type known per se, is mounted in the container 24.
  • this photocell unit 25,26 it is possible to sense how far down the web portion 1b is hanging in the container 24, whereby the driving unit 16 of the unrolling device 12 is cont rolled via a control unit 27 such that its unrolling speed is reduced when the web portion 1b is lowered in the container and increases when said portion is raised.
  • the web portion 1c is automatically brought to always run slack, which is very important for a satisfactory operation of the feeding unit 23 of the printer unit 4 and thus the printing process.
  • the feeding unit 23 of the printer unit 4 comprises a driven conveyor belt 28 with pins 29 engaging the formaliner holes (not shown) of the web when said web is driven through the printer unit 4.
  • the feeding unit 23 and the various arrangements of the printer unit 4 for printing information on the paper web 1 are well-known and are therefore not further described.
  • the outlet sensor 5 is of the same type as the inlet sensor 3 and thus comprises a container 29 having a photocell unit with transmitter and receiver 30 and 31.
  • the .photocell unit cooperates with a control device 32 which controls; a driving motor 33 of a web driving device 34 forming part of the receiving device 6.
  • the outlet sensor 5 controls said driving device 34 such that the web portion 1c between said device and the feeding unit 23 always runs in slacked condition, which is also essential for not affecting the feeding and printing moments of the printer unit 4.
  • the paper web 1 runs from the web driving device 34 to a reeling device 35 comprising a reeling roll 36.
  • the web portion 1d running between the web driving device 34 and the reeling roll 36 passes a control unit 37 arranged to sense changes in tension iti the web portion 1d and control the reeling speed of the reeling device 35 relative to said changes in tension.
  • the driving device 34 and the control unit 37 can have various structural embodiments of which especially simple and useful embodiments are shown in figs. 1 and 5.
  • the driving device 34 has two feed rolls 38, 39 of which at least one is driven by the driving unit 33, whereby the paper web 1 runs to the roll 38 via a conducting roll 40, extends around more than half the periphery of the roll 38, runs through a space between the rolls 38, 39 to the roll 39, extends around more than half the periphery of the roll 39 and runs away via a conducting roll 41.
  • the control unit 37 comprises a pivotally mounted pendulum 42 with at least one and preferably two conducting rolls 43, 44 (see fig. 5), whereby the web portion 1d runs from the conducting roll 41, down below the conducting roll 43, up above a conducting roll 45 , down below the conducting roll 44, up above a conducting roll 46 and via conducting rolls 47, 48 to the reeling roll 36 and in below a pressure roll 49.
  • the pendulum arm 42 is pivotally mounted on a horisontal axi s 50 such that it swings upwards if the tension in the web portion 1d increases and downwards if the tension is reduced.
  • This pendulum arm 42 cooperates with an electric control device 51 having a potentiometer 52 which is arranged to register the magnitude and direction of the swinging movements of the pendulum arm 42.
  • the electric control device 51 is designed to convert the values obtained from the potentiometer 52 for the swinging of the pendulum arm to electric signals for controlling a control unit 53 of the electric control device 51.
  • This control unit 53 is adapted to control a connection 54 between a driving aggregate 55 for operating the reeling roll 36 and said roll 36, whereby the driving aggregate may include a conventional three-phase motor and the connection comprises a so called eddy current coupling.
  • the control unit 37 operates in such a way that the pendulum arm 42 via the electric control device 51 controls the connection 54 so that the speed of rotation of the roll 36 automatically increases immediately upon reduction of the tension in the web portion Id and so that the speed of rotation of the roll 36 automatically decreases immediately upon a tension increase in the portion 1d.
  • the paper wefa 1 is wound up on the roll 36 at constant tension, which is essential for being able to directly use the paper reel 56 formed on the roll 36 for subsequent treatment.
  • the illustrated control unit 37 preferably comprises a load device 57 adapted to affect the control unit 37 such that said unit applies predetermined load on the web portion Id for providing a certain tension therein.
  • the load device 57 includes a pneumatic system 58 (connected to a not shown compressed air outlet) with an air regulator 59, a pressure meter 60 and a cylinder-piston device 61 connected to the pendulum arm 42.
  • the cylinder-piston device 61 is arranged to apply a load on the pendulum arm 42 determined by the air regulator 59, whereby the pressure meter 60 is adapted to indicate the instantaneous load on the web portion 1c.
  • the control unit 37 also comprises a shock absorber device 62 for shock absorbing the movements of the pendulum arm 42.
  • the device 62 preferably comprises a cylinder-piston device directly connected to the arm 42.
  • the pendulum arm may e.g. be a sensing means of another type than an arm.

Landscapes

  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Abstract

Dispositif pour machines a imprimer pour produire une bande, de preference une bande de papier perfore zebre, avec des informations, la bande de papier (1) progressant depuis un dispositif d'alimentation (2) via un detecteur d'entree (3) dans une imprimante (4) et de cette imprimante via un detecteur de sortie (5) vers un dispositif de reception (6), le detecteur d'entree commandant le dispositif d'alimentation pour assurer une alimentation en bande de papier de telle maniere que celle-ci se deplace dans un etat detendu vers une unite d'alimentation (23) pour assurer l'alimentation de l'imprimante tandis que le detecteur de sortie commande le dispositif de reception pour que l'alimentation soit telle que la bande se deplace dans un etat detendu depuis l'unite d'alimentation. De maniere a fournir un dispositif simple permettant une alimentation et une recuperation efficace des bandes de papier pourvues d'impressions dans des installations d'impression fonctionnant a de hautes vitesses d'impression, l'invention se caracterise par le fait que le dispositif de reception (6) comprend un dispositif d'entrainement d'une bande (34) commande par le detecteur de sortie (5) et maintenant la bande de papier (1), et par le fait que dans ce dispositif d'entrainement de la bande la partie de la bande (1c) sortant de l'unite d'alimentation (23) dans un etat detendu est transformee en une partie de bande etiree (1 d) sous l'influence d'un dispositif a rouleau (35) et une unite de traction de la bande (37).Device for printing machines for producing a strip, preferably a strip of zebra perforated paper, with information, the strip of paper (1) advancing from a feed device (2) via an input detector (3) in a printer (4) and from this printer via an output detector (5) to a reception device (6), the input detector controlling the supply device to ensure a supply of paper web in such a way as that -this moves in a relaxed state to a supply unit (23) to supply the printer while the output detector controls the reception device so that the supply is such that the tape moves in a relaxed state from the supply unit. In order to provide a simple device allowing an efficient feeding and recovery of the paper strips provided with prints in printing installations operating at high printing speeds, the invention is characterized in that the receiving device (6) comprises a device for driving a strip (34) controlled by the exit detector (5) and holding the paper strip (1), and by the fact that in this device for driving the strip the part of the strip (1c) leaving the supply unit (23) in a relaxed state is transformed into a part of stretched strip (1d) under the influence of a roller device (35) and a unit for pulling the strip (37).

Description

Device at printing plants for providing a web with information.
The present invention relates to a device at printing plants for providing a web, preferably a formaliner-perforated paper web, with information. Modern printing plants such as laser printing plants or ink jet printers operate at very high printing speeds and provide prints of 0,7 - 0,8 m/s . One condition for being able to utilize such high speeds at printing plants for e.g. printing forms, is that the web for receiving the print may be fed through the printer at high speed and collect the printed web in such a way that it directly may be used in subsequent-treatment plants such as sheet-formation and/or folding plants. It has long been known various types of devices for feeding webs through printing plants, but these are not suitable for use in modern printing plants. The object of the present invention is to provide by simple means a device which permits efficient feeding and collecting of webs provided with prints in printing plants operating at high printing speeds. This is attained substantially by means of the device defined in the following claim 1. The invention will be further described in the following with reference to the accompanying drawings,, in which fig. 1 is a side view schematically illustrating a printing plant with a device according to the invention; fig. 2 schematically illustrates a brake unit forming part of the plant of fig. 1; figs. 3 and 4 schematically illustrate sensors forming part of the plant of fig. 1; and fig. 5 schematically illustrates a control unit forming part of the plant of fig. 1. The plant shown is adapted for printing a formaliner-perforated paper web 1 and collect said web such that it directly may be used for subsequent treatment. The paper web 1 is intended for the manufacture of forms and subsequent treatment thereof is intended to occur in sheet-formation and/or folding plants. The plant is substantially comprised by a feeding device 2 for feeding the paper web which runs via an inlet sensor 3 to a printer unit 4 for printing information on the web 1. The printed paper web 1 runs via an outlet sensor 5 to a receiving device 6.
The feeding device 2 comprises a machine frame 7 with a recess 8 for storing a roll 9 on which the formaliner-perforated web 1 for printing is reeled. The frame 7 further comprises a lifting device for lifting the roll 9 and positioning the same in the recess 8. The lifting device includes a pivotally mounted lifting arm 10 provided with a fork (not shown) for the roll 9 and pivotable by means of a cylinder-piston device 11 forming part of a hydraulic or pneumatic system (not shown).
The feeding device 2 also comprises an unrolling device 12 for unrolling the web 1 from the roll 9 and a brake unit 13 for braking the roll 9. The unrolling device 12 has two feed roils 14 and 15 between which the web runs and at least one of said rolls 14, 15 is operated by a driving unit 16. The paper web 1 runs from the roll
9 to the unrolling device 12 via three conducting rolls 17, 18 and 19 of which the roll 19 is stored on a pendulum arm 20 forming part of the brake unit 13. The arm 20 booperates with a disc brake 22
(see fig. 2.) via a brake cylinder 21 and said disc brake cooperates with the roll 9.
When the unrolling device 12 reduces its speed, the tension in web portion 1a between the roll 9 and the unrolling device 12 will lessen, whereby the pendulum arm 20 will swing downwards. This swing of the pendulum arm is transferred via the brake cylinder 21 to the disc brake 22, which brakes the rotation of the roll 9. When the tension of the web portion 1a again increases, the arm 20 swings upwards, whereby the braking effect of the brake unit 13 on the roll 9 is reduced. The brake cylinder 21, disc brake 22 and other members, of the brake unit 13 axe of a well-known type with well-known function and are thus not further described.
The paper web 1 runs from the unrolling device 12 to the printer unit 4 via the inlet sensor 3, which is adapted to control the unrolling device 12 such that the web portion 1b of the web runs in a slacked condition between the unrolling device 12 and a feeding unit 23 in the printer unit 4.
In principal, the inlet sensor 3 comprises a container 24 open at the top and in which the web portion 1b is hanging down. A photocell device - comprising a photocell unit - with transmitter and receiver 25, 26 of a type known per se, is mounted in the container 24. By means of this photocell unit 25,26, it is possible to sense how far down the web portion 1b is hanging in the container 24, whereby the driving unit 16 of the unrolling device 12 is cont rolled via a control unit 27 such that its unrolling speed is reduced when the web portion 1b is lowered in the container and increases when said portion is raised. Hereby, the web portion 1c is automatically brought to always run slack, which is very important for a satisfactory operation of the feeding unit 23 of the printer unit 4 and thus the printing process.
The feeding unit 23 of the printer unit 4 comprises a driven conveyor belt 28 with pins 29 engaging the formaliner holes (not shown) of the web when said web is driven through the printer unit 4. The feeding unit 23 and the various arrangements of the printer unit 4 for printing information on the paper web 1 are well-known and are therefore not further described.
The outlet sensor 5 is of the same type as the inlet sensor 3 and thus comprises a container 29 having a photocell unit with transmitter and receiver 30 and 31. The .photocell unit cooperates with a control device 32 which controls; a driving motor 33 of a web driving device 34 forming part of the receiving device 6. The outlet sensor 5 controls said driving device 34 such that the web portion 1c between said device and the feeding unit 23 always runs in slacked condition, which is also essential for not affecting the feeding and printing moments of the printer unit 4.
The paper web 1 runs from the web driving device 34 to a reeling device 35 comprising a reeling roll 36. The web portion 1d running between the web driving device 34 and the reeling roll 36 passes a control unit 37 arranged to sense changes in tension iti the web portion 1d and control the reeling speed of the reeling device 35 relative to said changes in tension.
The driving device 34 and the control unit 37 can have various structural embodiments of which especially simple and useful embodiments are shown in figs. 1 and 5. According to these embodiments the driving device 34 has two feed rolls 38, 39 of which at least one is driven by the driving unit 33, whereby the paper web 1 runs to the roll 38 via a conducting roll 40, extends around more than half the periphery of the roll 38, runs through a space between the rolls 38, 39 to the roll 39, extends around more than half the periphery of the roll 39 and runs away via a conducting roll 41.
Hereby, a suitable efficient grip is obtained between the rolls
38, 39 and the paper web 1 such that it not slides on the rolls 38,
39 but is fed thereof without sliding. The control unit 37 comprises a pivotally mounted pendulum 42 with at least one and preferably two conducting rolls 43, 44 (see fig. 5), whereby the web portion 1d runs from the conducting roll 41, down below the conducting roll 43, up above a conducting roll 45 , down below the conducting roll 44, up above a conducting roll 46 and via conducting rolls 47, 48 to the reeling roll 36 and in below a pressure roll 49.
The pendulum arm 42 is pivotally mounted on a horisontal axi s 50 such that it swings upwards if the tension in the web portion 1d increases and downwards if the tension is reduced.
This pendulum arm 42 cooperates with an electric control device 51 having a potentiometer 52 which is arranged to register the magnitude and direction of the swinging movements of the pendulum arm 42. The electric control device 51 is designed to convert the values obtained from the potentiometer 52 for the swinging of the pendulum arm to electric signals for controlling a control unit 53 of the electric control device 51. This control unit 53 is adapted to control a connection 54 between a driving aggregate 55 for operating the reeling roll 36 and said roll 36, whereby the driving aggregate may include a conventional three-phase motor and the connection comprises a so called eddy current coupling.
The control unit 37 operates in such a way that the pendulum arm 42 via the electric control device 51 controls the connection 54 so that the speed of rotation of the roll 36 automatically increases immediately upon reduction of the tension in the web portion Id and so that the speed of rotation of the roll 36 automatically decreases immediately upon a tension increase in the portion 1d. Hereby, the paper wefa 1 is wound up on the roll 36 at constant tension, which is essential for being able to directly use the paper reel 56 formed on the roll 36 for subsequent treatment.
The illustrated control unit 37 preferably comprises a load device 57 adapted to affect the control unit 37 such that said unit applies predetermined load on the web portion Id for providing a certain tension therein. The load device 57 includes a pneumatic system 58 (connected to a not shown compressed air outlet) with an air regulator 59, a pressure meter 60 and a cylinder-piston device 61 connected to the pendulum arm 42. The cylinder-piston device 61 is arranged to apply a load on the pendulum arm 42 determined by the air regulator 59, whereby the pressure meter 60 is adapted to indicate the instantaneous load on the web portion 1c.
The control unit 37 also comprises a shock absorber device 62 for shock absorbing the movements of the pendulum arm 42. The device 62 preferably comprises a cylinder-piston device directly connected to the arm 42.
The invention may vary within the scope of the following claims regarding details in the various embodiments. The pendulum arm may e.g. be a sensing means of another type than an arm.

Claims

Claims:
1. Device at printing plants for providing a web, preferably a formaliner-perforated paper web, with information, whereby the web (1) runs from a feeding device (2) via an inlet sensor (3) to a printer unit (4) and therefrom via an outlet sensor (5) to a receiving device (6) and whereby the inlet sensor controls the feeding device to feed the web such that it runs in slacked condition to a feeding unit (23) for feeding thereof through the printer unit while the outlet sensor controls the receiving device to feed the web such that it runs in slacked condition from the feeding unit, c h a r a c t e r i z e d i n that the receiving device (ό) comprises a web driving device (34) controlled by the outlet sensor (5) and holding the web (1), that in said web driving device the web portion (1c) running from the feeding unit (23) in slacked condition is transformed into a stretched web portion (1d) under the influence of a reeling device (35) arid a web drawing unit (37).
2. Device according to claim 1, c h a r a c t e r i z e d i n that the web driving device (34) has two feed rolls (38, 39), whereby the web (1) runs over more than half the periphery of one of said rolls (38) and extends via a space between the rolls to the other of said feed rolls (39), whereafter the web runs over more than half the periphery of said other roll.
3. Device according to claim 1 or 2, c h σ r a c t e r iz e d i n that the control unit (37) includes a sensing means
(42) cooperating with the web portion (id) running between the driving device (34) and the reeling device (35), that said sensing means is arranged to alter position in dependence of variations in tension in said web portion, that the sensing means cooperates with an electric control device (51) which in relation to. the magnitude of the position alterations of the sensing means controls a connection (54) between a driving aggregate (55) and a reeling roll (36) of the reeling device (35), that the electric control device includes a potentiometer (52) adapted to register the position changes of the sensing means and that the values registered controls a control unit (53) for controlling a connection (54) of eddy current type.
EP81901500A 1980-06-16 1981-06-15 Device at printing plants for providing a web with information Expired EP0053619B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8004463A SE8004463L (en) 1980-06-16 1980-06-16 DEVICE FOR PRINTER PLANTS INTENDED TO PROVIDE A MATERIAL COURSE WITH INFORMATION
SE8004463 1980-06-16

Publications (2)

Publication Number Publication Date
EP0053619A1 true EP0053619A1 (en) 1982-06-16
EP0053619B1 EP0053619B1 (en) 1985-03-13

Family

ID=20341223

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81901500A Expired EP0053619B1 (en) 1980-06-16 1981-06-15 Device at printing plants for providing a web with information

Country Status (5)

Country Link
EP (1) EP0053619B1 (en)
DE (1) DE3152105A1 (en)
GB (1) GB2088342A (en)
SE (1) SE8004463L (en)
WO (1) WO1981003651A1 (en)

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CN104891236A (en) * 2015-06-08 2015-09-09 嘉兴金州聚合材料有限公司 Tension-free automatic cloth conveying device
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Also Published As

Publication number Publication date
WO1981003651A1 (en) 1981-12-24
DE3152105A1 (en) 1982-08-12
GB2088342A (en) 1982-06-09
EP0053619B1 (en) 1985-03-13
SE8004463L (en) 1981-12-17

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