EP0500467A1 - Verfahren zur kontinuierlichen Kontrolle einer endlosen Bahn, sowie Vorrichtung zur Durchführung dieses Verfahrens - Google Patents

Verfahren zur kontinuierlichen Kontrolle einer endlosen Bahn, sowie Vorrichtung zur Durchführung dieses Verfahrens Download PDF

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Publication number
EP0500467A1
EP0500467A1 EP92400451A EP92400451A EP0500467A1 EP 0500467 A1 EP0500467 A1 EP 0500467A1 EP 92400451 A EP92400451 A EP 92400451A EP 92400451 A EP92400451 A EP 92400451A EP 0500467 A1 EP0500467 A1 EP 0500467A1
Authority
EP
European Patent Office
Prior art keywords
strip
injection system
drops
machine
dye
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
EP92400451A
Other languages
English (en)
French (fr)
Other versions
EP0500467B1 (de
Inventor
Jean-François Xavier Anne van den Bogaert
Pierre Paul Pascolo
Gérard Xavier Ringenbach
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.)
MacDermid Graphics Solutions Europe SAS
Original Assignee
Rollin SA
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Filing date
Publication date
Application filed by Rollin SA filed Critical Rollin SA
Publication of EP0500467A1 publication Critical patent/EP0500467A1/de
Application granted granted Critical
Publication of EP0500467B1 publication Critical patent/EP0500467B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65H26/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms
    • B65H26/02—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to presence of irregularities in running webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/16—Printing tables
    • B41F15/18—Supports for workpieces
    • B41F15/24—Supports for workpieces for webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F17/00—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for
    • B41F17/003—Special types of machines for printing textiles
    • B41F17/005—Supports for workpieces; Devices for securing the workpieces to the supports

Definitions

  • the present invention essentially relates to a process for the continuous control of an endless strip, in particular a strip intended to entrain a fabric which must receive successive impressions, the offset of which must be zero or reduced to the minimum in order to thus preserve the aesthetics of the printed fabric.
  • This invention also relates to a machine for continuously monitoring an endless belt for the implementation of this method.
  • textile printing machines generally comprise an endless sheet or band surrounding two cylinders, one of which is rotated and above which cylinders or flat frames are arranged. successive printing capable of printing patterns of different colors on a strip of fabric entrained by the strip and sandwiched between this strip and the printing cylinders.
  • the sheet or the endless strip generally has a sandwich structure of several more or less thick layers of elastomeric material, of fabric, etc., capable of allowing the printing of the fabric resting on the strip by compression of the cylinders or flat frames. printing on the fabric.
  • the endless belt is obviously driven at constant speed, but the speed of movement of the band remains irregular despite everything due to local-possible defects or variations in the internal structure of this band, these defects or variations in structure giving the band somewhat variable elasticity.
  • Such cropping can reach a few tenths of a millimeter, which is detrimental to the appearance of the fabric. Indeed, one cannot tolerate a cropping which is higher than approximately one tenth of a millimeter.
  • the present invention achieves this goal.
  • the subject of the invention is a process for the continuous control of an endless belt, for example intended to drive a fabric which must receive successive impressions, the cropping of which must be zero or reduced to a minimum, characterized in that '' it consists of periodically depositing drops of dye, such as ink, on a stretched strip of tape driven at a constant speed, continuously measuring the differences between two drops and comparing these differences with a reference value to thus control the regularity of the current local speed of travel of the strip and therefore its structural homogeneity.
  • '' it consists of periodically depositing drops of dye, such as ink, on a stretched strip of tape driven at a constant speed, continuously measuring the differences between two drops and comparing these differences with a reference value to thus control the regularity of the current local speed of travel of the strip and therefore its structural homogeneity.
  • each measured difference value between the two aforementioned adjacent drops is memorized, the average of the different measured differences is then calculated and the difference between the difference currently measured and said average is made.
  • a drop of dye from a single injection system is periodically deposited on the stretched strand of the strip so as to obtain on the stretched strand of the strip a succession of drops. , and the differences between the successive drops are measured continuously and downstream of the injection system to determine the average value of the position of the neutral fiber in the strip.
  • the position of the neutral fiber in the strip is substantially constant, it will therefore be certain that the running speed of said strip will also be substantially constant and that consequently this strip will be suitable for printing a fabric without defects in framing. It should also be added that precise knowledge of the position of the neutral fiber will allow the operator of the textile printing machine to preset the said machine so as to obtain the required printing precision.
  • the invention also relates to a machine for implementing the method meeting one or the other of the above characteristics, this machine being of the type comprising a frame supporting two cylinders capable of causing an endless belt to rotate. to be checked, and being characterized in that said frame carries above the strip, at least a dye injection system and at least one camera connected to a computer, while an encoder is mechanically connected to the output shaft of a rotary drive motor of one of the two cylinders and is electrically connected to said injection system and to said camera.
  • a first gantry situated on the side of the cylinder driven by the engine and supporting a first dye injection system as well as two cameras, and a second gantry located on the side of the other cylinder and supporting a second dye injection system.
  • the other aforementioned cylinder is removably mounted on a rolling carriage or also meshing on the frame and capable of passing under the two aforementioned gantries.
  • the cylinder driven by the motor is removably mounted on a support fixed to the frame and carrying the aforementioned motor and encoder.
  • the machine according to this invention is further characterized in that it is functionally associated with a fabric printing machine or the like to regulate the speed thereof.
  • the printing machine itself can include all the means according to this invention for carrying out continuous control of the current speed of travel of the endless strip which drives the fabric to print it.
  • Band B if its control proves satisfactory, may be transferred to a printing machine (not shown), or else, without departing from the scope of the invention, the printing machine may be integrated into the printing machine. control visible in Figure 1.
  • This control machine comprises a frame 1 supporting two cylinders or rollers allowing the belt B to be driven in rotation along arrow F, and namely a motorized or front cylinder 2 and a rear or traction cylinder 3.
  • the rear cylinder 3 is removably mounted on a self-propelled carriage 4 meshing with a rack 5 secured to the frame 1.
  • the front cylinder 2 is removably mounted on a support 6 fixed, by any suitable means, to the frame 1 of the machine. On this fixed support is mounted a motor 7 for driving the cylinder 2 in rotation, and an encoder 8 is mechanically connected to the motor shaft 7.
  • the encoder 8 is electrically connected by a file 9 to two injection systems 10, 11 of dye, such as for example ink, and to two video cameras 12, 13, as can be seen in the figures 1, 2 and 3.
  • a first gantry located on the side of the front or motorized cylinder 2 has been shown at 14 in FIG. 1, this gantry supporting, by any suitable means, the two cameras 12, 13 and one of the two dye injection systems .
  • the other dye injection system 10 is integral with a second gantry 15 which, like the gantry 14 is provided with an access 16 and a control console 17.
  • the gantries 14 and 15 are mounted rolling or sliding on the frame 1 of the machine and the injection systems 10 and 11, as well as the cameras 12 and 13 are carried by these gantries above and below the belt endless B, it being understood that the self-propelled carriage 4 can pass under said gantries 14,15, as will be described later.
  • a computer 0 shown diagrammatically in FIGS. 2 and 3 and connected to the video cameras 12 and 13 allows the calculation of the cropping and the position of the neutral fiber of band B, as will be described in detail below.
  • the two gantries 14 and 15 are moved back on the frame 1 towards the right end of this figure, and the self-propelled carriage 4 supporting the rear cylinder 3 is advanced on the frame 1, passing under the gantries 14 and 15, towards and relatively near the support 6 carrying the motorized cylinder 2.
  • This motorized cylinder 2 is detached, by one of its ends from the support 6, and the endless band B to be checked is threaded (shown in dotted lines on the left part of FIG. 1) on the cylinder 2 which is then put back on its support 6.
  • an overhead crane, hoist or the like shown diagrammatically at 18, is used to reassemble the rear cylinder 3 (or 3a) threaded in the band B, on the self-propelled carriage 4 located very close to the support 6 carrying the front cylinder 2.
  • the strip B is thus in place, that is to say surrounding the cylinders 2 and 3, the two gantries 14 and 15 are brought to the left in FIG. 1, in the position visible in this figure by passing over the strip B.
  • the carriage 4 is brought to the right of FIG. 1 to take the position visible in this figure, it being understood that the strip B will, thanks to the carriage 4, be tensioned.
  • the tension of the strip will be adjusted by means of jacks (not shown) by an operator who will control the prescribed value of tension on indicators identified at 19 in FIG. 1.
  • a strip of adhesive film 20 which is clearly visible in FIG. 1 is glued to the endless strip B in order to serve as a printing medium for the drops of ink leaving the injection systems 10 and 11.
  • the system is originally designed to give 900,000 points from the encoder 8 per revolution of the drive cylinder 2.
  • the encoder 8 gives the order to the injection systems 10 and 11 for each movement p of the strip B, to simultaneously print a drop a, b on the sheet, after which the cropping caused by the irregularities of the strip will be checked by the camera 12, downstream of the injection system 11.
  • the differences X i between two drops ab are measured by the camera 12 connected to the computer 0 in which each difference value between two drops is stored.
  • the computer calculates the average of the different deviations X i measured by the camera 12, that is to say:
  • the computer 0 will make the difference between the difference X i currently measured by the camera 12 and the aforementioned average of the differences X, to give the value d i of the cropping, that is:
  • the screen of the computer 0 will indicate in the form of a graph the different values of d i according to the position of the strip B.
  • a single ink injection system is used, namely the system 11, and the two identical and simultaneous reading video cameras 12 and 13 which are mounted on the gantry 14 above the sheet B and spaced apart.
  • a distance D 1000 mm.
  • the cameras 12 and 13 can accurately measure the value p, which is the distance between two successive drops deposited by the ink injection system 11.
  • the objective is to determine the position or the average value of the neutral fiber f, which constitutes a particularly useful parameter for operators using fabric printing machines with an endless belt of the type of those currently considered. .
  • the system according to the invention will give the current or individual values f i of the neutral fiber as a function of the position on the sheet B, and the computer 0 will calculate and give the average value of the neutral fiber, ie:
  • a method and a machine for continuous control of an endless belt for a fabric printing machine have therefore been produced according to the invention, this method and this machine making it possible to measure the cropping and the average position with great precision. of the neutral fiber of the strip.
  • the equipment of the machine according to the invention will in particular include ink injection systems, video cameras and an encoder having high precision and resolution so as to obtain the precision required in the results of measurement, and thus to guarantee the users of fabric printing machines against any web defect which would be detrimental to the printing of fabrics.
  • machine according to the invention could be incorporated or combined with a fabric printing machine in any suitable manner whatsoever.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Screen Printers (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Sewing Machines And Sewing (AREA)
  • Paper (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Tyre Moulding (AREA)
EP92400451A 1991-02-20 1992-02-20 Verfahren zur kontinuierlichen Kontrolle einer endlosen Bahn, sowie Vorrichtung zur Durchführung dieses Verfahrens Expired - Lifetime EP0500467B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9102041A FR2672879B1 (fr) 1991-02-20 1991-02-20 Procede de controle en continu d'une bande sans fin et machine pour la mise en óoeuvre de ce procede.
FR9102041 1991-02-20

Publications (2)

Publication Number Publication Date
EP0500467A1 true EP0500467A1 (de) 1992-08-26
EP0500467B1 EP0500467B1 (de) 1996-06-19

Family

ID=9409935

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92400451A Expired - Lifetime EP0500467B1 (de) 1991-02-20 1992-02-20 Verfahren zur kontinuierlichen Kontrolle einer endlosen Bahn, sowie Vorrichtung zur Durchführung dieses Verfahrens

Country Status (8)

Country Link
US (1) US5295571A (de)
EP (1) EP0500467B1 (de)
AT (1) ATE139511T1 (de)
CA (1) CA2061533A1 (de)
DE (1) DE69211576T2 (de)
FR (1) FR2672879B1 (de)
MY (1) MY108642A (de)
ZA (1) ZA92770B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0649068A2 (de) * 1993-08-02 1995-04-19 Xerox Corporation Verfahren und Vorrichtung zur Ausrichtung mehrerer Bilder in einem xerographischen System
US6273313B1 (en) * 1999-06-02 2001-08-14 The Proctor & Gamble Company Process and apparatus for controlling the registration of converting operations with prints on a web
WO2007073784A1 (de) * 2005-12-27 2007-07-05 Lurgi Zimmer Gmbh Verfahren und vorrichtung zur produktionsüberwachung von endlosformkörpern wie filamenten und filamentbündeln

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5774153A (en) * 1991-11-15 1998-06-30 Heidelberger Druckmaschinen Aktiengesellschaft Digital precision positioning system
TW339028U (en) * 1994-02-14 1998-08-21 Manfred R Kuehnle Transport apparatus with electrostatic substrate retention
JP3779364B2 (ja) * 1996-01-26 2006-05-24 株式会社湯山製作所 薬剤収納取出装置
NL1007246C2 (nl) * 1997-08-26 1999-03-01 Stork Brabant Bv Drukinrichting met kleefstofrakel.
SE512662C2 (sv) * 1998-03-12 2000-04-17 Sunds Defibrator Ind Ab Transportör samt anläggning för balning av pappersmassa
DE10035402A1 (de) * 2000-07-19 2002-01-31 Phoenix Ag Einrichtung zur Überwachung einer Förderanlage
US6585108B2 (en) * 2001-09-17 2003-07-01 Tonny A. Travis Method and apparatus for monitoring and controlling conveyor position
US7047852B2 (en) * 2001-10-24 2006-05-23 Kimberly-Clark Worldwide, Inc. Feedforward control system for an elastic material
US7012210B2 (en) 2002-08-09 2006-03-14 Lockheed Martin Corporation Singulation detection system for objects used in conjunction with a conveyor system
US6758327B1 (en) 2003-01-07 2004-07-06 Rexnord Industries, Inc. Conveyor drive assembly and method of operation
US7210361B2 (en) * 2005-09-26 2007-05-01 Hsin Fa Kang Device for measuring the tightness of a transmission belt
US20080236108A1 (en) * 2007-03-29 2008-10-02 Parmley Steven M Package Wrapping Machine with Detection of Lip Features of Trayed Products to be Wrapped
CN103534557B (zh) * 2010-12-15 2016-06-29 阿努比斯制造咨询股份有限公司 用于测量松散固体材料流量的系统和方法
US9228909B1 (en) 2014-05-13 2016-01-05 Google Inc. Methods and systems for sensing tension in a timing belt
CN112892985B (zh) * 2021-01-15 2022-06-14 东营红星劳保用品有限责任公司 一种纺织布料用阻燃材料定量涂抹装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3559568A (en) * 1969-01-14 1971-02-02 Armstrong Cork Co Method of controlling pattern repeat length
FR2453096A1 (fr) * 1979-04-06 1980-10-31 Toshin Kogyo Co Procede et machine de serigraphie automatique
US4690051A (en) * 1986-02-12 1987-09-01 Miyakoshi Printing Machinery Co., Ltd. Method of image registration in a web fed, multiple printing rotary press

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE257417C (de) *
HU180827B (en) * 1979-08-10 1983-04-29 Koezponti Banyaszati Fejleszte Method for measuring the resistance to wear of endless driving devices during operation
FR2487795B1 (fr) * 1980-07-30 1986-01-31 Oritel Sa Installation pour la surveillance d'un convoyeur a tapis sans fin
SU1114598A1 (ru) * 1983-03-15 1984-09-23 Днепропетровский завод шахтной автоматики Устройство контрол проскальзывани ленты конвейера
DE3933196C2 (de) * 1989-10-05 1994-05-26 Schenck Ag Carl Verfahren und Vorrichtung zur Überwachung des Bandlaufs eines Förderbandes oder einer Bandwaage

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3559568A (en) * 1969-01-14 1971-02-02 Armstrong Cork Co Method of controlling pattern repeat length
FR2453096A1 (fr) * 1979-04-06 1980-10-31 Toshin Kogyo Co Procede et machine de serigraphie automatique
US4690051A (en) * 1986-02-12 1987-09-01 Miyakoshi Printing Machinery Co., Ltd. Method of image registration in a web fed, multiple printing rotary press

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0649068A2 (de) * 1993-08-02 1995-04-19 Xerox Corporation Verfahren und Vorrichtung zur Ausrichtung mehrerer Bilder in einem xerographischen System
EP0649068A3 (de) * 1993-08-02 1995-10-11 Xerox Corp Verfahren und Vorrichtung zur Ausrichtung mehrerer Bilder in einem xerographischen System.
US6273313B1 (en) * 1999-06-02 2001-08-14 The Proctor & Gamble Company Process and apparatus for controlling the registration of converting operations with prints on a web
WO2007073784A1 (de) * 2005-12-27 2007-07-05 Lurgi Zimmer Gmbh Verfahren und vorrichtung zur produktionsüberwachung von endlosformkörpern wie filamenten und filamentbündeln

Also Published As

Publication number Publication date
FR2672879B1 (fr) 1994-12-09
US5295571A (en) 1994-03-22
DE69211576T2 (de) 1997-02-06
DE69211576D1 (de) 1996-07-25
EP0500467B1 (de) 1996-06-19
ZA92770B (en) 1992-11-25
MY108642A (en) 1996-10-31
ATE139511T1 (de) 1996-07-15
FR2672879A1 (fr) 1992-08-21
CA2061533A1 (en) 1992-08-21

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