EP0102743A2 - Procédé et dispositif d'alimentation de substrat dans machines en continu d'impression multicolore - Google Patents

Procédé et dispositif d'alimentation de substrat dans machines en continu d'impression multicolore Download PDF

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Publication number
EP0102743A2
EP0102743A2 EP83304357A EP83304357A EP0102743A2 EP 0102743 A2 EP0102743 A2 EP 0102743A2 EP 83304357 A EP83304357 A EP 83304357A EP 83304357 A EP83304357 A EP 83304357A EP 0102743 A2 EP0102743 A2 EP 0102743A2
Authority
EP
European Patent Office
Prior art keywords
substrate
belt
printing
conveying
mesh belt
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Withdrawn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
EP83304357A
Other languages
German (de)
English (en)
Other versions
EP0102743A3 (fr
Inventor
Shiro Ichinose
Akio Yamasaki
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.)
Toshin Kogyo Co Ltd
Original Assignee
Toshin Kogyo Co Ltd
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 Toshin Kogyo Co Ltd filed Critical Toshin Kogyo Co Ltd
Publication of EP0102743A2 publication Critical patent/EP0102743A2/fr
Publication of EP0102743A3 publication Critical patent/EP0102743A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B41F15/20—Supports for workpieces with suction-operated elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/02—Conveying or guiding webs through presses or machines

Definitions

  • This invention relates to a method and apparatus for conveying a substrate in a continuous multi-color printing press, and more specifically, to a method and apparatus for conveying a substrate to be printed to a printing zone by utilizing a suction pressure.
  • various printing devices such as a gravure printing press and a rotary offset printing press have been used as_means for continuously performing multicolor printing on a long strip of substrate such as paper, various films and metallic foils.
  • a different example of such continuous multicolor screen printing is automatic screen printing of textile products.
  • an endless belt is used to convey the substrate, and by using a suitable adhesive, the substrate is adhered to the endless belt.
  • the substrate and the belt thus become a unitary structure, and intermittent driving is carried out at predetermined intervals of feed.
  • the accuracy of feed and hence the accuracy of registering can be maintained high.
  • the substrate is paper, a film, or the like, it can be adhered to a belt but it is difficult or impossible to peel it therefrom. Accordingly, a conveying method using a belt cannot be employed.
  • a method for conveying a substrate to be printed which comprises stretching an endless belt over a pair of conveyor rollers, placing the substrate on the belt, and conveying the substrate to a printing zone by the driving of the belt, characterized in that a number of apertures are formed on the endless belt, a negative pressure is applied to the underside of the belt on the substrate-conveying side, and the substrate, while in intimate contact with the endless belt, is conveyed to the printing zone as an integral unit with the endless belt without a deviation in position.
  • a conveying device wherein a mesh belt is used as said endless belt, a suction table communicating with a suction device is provided below the conveying zone of the mesh belt, and the substrate is conveyed as an integral unit with the mesh belt by a suction force.
  • the present invention is characterized by the fact that instead of the endless conveyor belt in an automatic screen printing machine, an endless metallic mesh belt is used as a means for conveying, and a substrate is always sucked to, and held on, the metallic mesh belt during moving and stopping by a suction pressure continuously applied by a suction table fixedly provided below the mesh belt, and therefore conveyed integrally with the mesh belt, and the position of the substrate during moving is secured even during stoppage.
  • a drive roller 2 is provided rearwardly in the advancing direction of a substrate 1 to be printed, and a driven roller is provided in parallel thereto forwardly in the same direction.
  • An endless metallic mesh belt 4 is stretched over these rollers. Intermittent rotation is given to the drive roller 2 by a drive motor 5 through a worm 6 and a worm gear 7, and the corresponding intermittent feed is imparted to the mesh belt 4.
  • the method of intermittent feed may be any desired one which is disclosed, for example, in Japanese Patent Publication No. 24427/1980.
  • the important characteristic feature of this invention is that the substrate 1 is conveyed to a printing zone P by using the mesh belt 4, and suction tables 8,8, Vietnamese are provided below the mesh belt 4 (at the upper position in the drawing) on the conveying side.
  • the suction tables 8, 8, Vietnamese are connected to a vacuum pump or air discharge device 10 through a pipe 9.
  • the suction tables 8 are fixed to a machine stand (not shown) at such relative positions that they are close to the underside of the mesh belt 4 on the conveying side.
  • a number of apertures 8A are provided substantially evenly on the entire upper surfaces of the suction tables 8, and the suction pipe 9 is connected to the undersides and side surfaces of these suction tables 8 and thus leads to the vacuum pump or air discharging device 10.
  • the inside of a hollow chamber 8B becomes vacuum or is maintained under a negative pressure.
  • the vacuum pump or air discharging device 10 when the vacuum pump or air discharging device 10 is operated in conveying the substrate 1 on the mesh belt 4, the pressure of the hollow chamber 8B becomes vacuum or netative. Hence, the substrate 1 remains in intimate contact with the mesh belt 4, and is conveyed smoothly to the printing zone without a trouble such as a deviation in position.
  • Apertures 4 are formed on the mesh belt 4. To impart a sucking effect to the entire surface of the substrate 1 and to secure a smooth printing surface, the mesh size is advantageously small.
  • the mesh belt 4 is produced by the same method as in the production of a rotary screen mesh by electroplating which is now widely used. By such a method, a mesh belt having a size of 40 to 200 mesh can usually be obtained. Various other types of mesh belts made of metals or non-metals may be used. But the one obtained by the electroplating method is practical because its frictional resistance to the suction tables 8 is good, apertures 4A can be formed easily and it is completely endless.
  • a suction force acts on the entire surface of the substrate by the operation of the vacuum pump or air discharging device 10, the substrate 1 is conveyed to the printing zone P while it is maintained in intimate contact with the mesh belt 4 as a unit.
  • the substrate 1 is fixed to the surface of the mesh belt 4 in intimate contact therewith.
  • printing can be smoothly and accurately carried out on the substrate without positional deviation, stretching, contraction, etc.
  • a plurality of planographic printing devices 11 are arranged at intervals corresponding to the feed repeats, and between the planographic screen printing devices 11, an intermediate drying device 12 is provided as required. Thus, printing and drying are carried out for each color.
  • the substrate 1 is intermittently driven as a unit with the mesh belt 4 by the aforesaid sucking action. After printing the required number of colors, the substrate 1 is separated from the mesh belt 4, and after a final drying device 13, is subjected to a wind-up or other steps.
  • the suction tables 8 are provided in the divided state, but they may be provided as a one-piece structure. It is sufficient that they are arranged such that a sucking effect is produced over the entire area of the substrate 1 from before the start of printing to the end of printing, and during this time, stretching, contraction or slipping of the substrate 1 is prevented.
  • rotary screen printing devices 15 are provided at equal intervals. Printing and intermediate drying are carried out for each color, and after final drying, the next step sets in.
  • the mesh belt 4 and the substrate 1 are driven continuously. Receiver rollers 16 are required to be provided below the rotary screen devices 15 through the substrate 1 and the mesh belt 4.
  • Figure 5 shows another embodiment of planographic screen printing in which the feed repeat is large, or the number of colors is larger, and thus a longer printing area is required.
  • the mesh belt 4 is obtained by the electroplating method as mentioned above. To make it completely endless, its circumferential length is naturally limited. When the repeat is large or the number of colors is large, the length of the mesh belt 4 will be insufficient. To avoid this, the mesh belt 4 and the driving device therefor may be composed of a plurality of units which are then linked to each other and operated, as shown in Figure 5.
  • the mesh belt 4, the drive roll, the driven roll and the suction tables are the same as in Figure 1, but the driving of the motor 5 reaches the drive roller 2 of each unit through a decelerater 17 such as a worm gear, and the individual units are synchronously operated through a line shaft 18.
  • a decelerater 17 such as a worm gear
  • This method can of course be used in the case of the rotary screen printing shown in Figure 4.
  • the present invention is further characterized by the fact that a suction force is always exerted on the substrate irrespective of whether the mesh belt is moving or at a stop. Because of this characteristic, the sucking effect exists over the entire length of the printing zone whether the suction table is composed of divided units, or is a long one-piece structure. In - other words, the suction tables are arranged such that the substrate can be conveyed without stretching, contraction, vibration or slippage from before the start of printing to the end of printing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Screen Printers (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Advancing Webs (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Belt Conveyors (AREA)
  • Coloring (AREA)
EP83304357A 1982-07-28 1983-07-27 Procédé et dispositif d'alimentation de substrat dans machines en continu d'impression multicolore Withdrawn EP0102743A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP130508/82 1982-07-28
JP13050882A JPS5920673A (ja) 1982-07-28 1982-07-28 連続多色印刷機における基材の搬送方法及び装置

Publications (2)

Publication Number Publication Date
EP0102743A2 true EP0102743A2 (fr) 1984-03-14
EP0102743A3 EP0102743A3 (fr) 1984-12-05

Family

ID=15035954

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83304357A Withdrawn EP0102743A3 (fr) 1982-07-28 1983-07-27 Procédé et dispositif d'alimentation de substrat dans machines en continu d'impression multicolore

Country Status (2)

Country Link
EP (1) EP0102743A3 (fr)
JP (1) JPS5920673A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5553536A (en) * 1994-10-03 1996-09-10 Van Os Enterprises Screen printing apparatus with vacuum conveyor belt
ES2174662A1 (es) * 1998-03-05 2002-11-01 C I M E S S R L Maquina serigrafica para baldosas de ceramica.
CN104354455A (zh) * 2014-11-24 2015-02-18 苏州瑞日纺织科技有限公司 一种印花机布料固定装置
CN115783625A (zh) * 2022-12-27 2023-03-14 河北盛源科技设备股份有限公司 一种便于上料的提升机及其使用方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60168940U (ja) * 1984-04-19 1985-11-09 石関　修作 オフセツト印刷の紙受渡し胴の汚染防止装置
JP4496171B2 (ja) * 2006-01-13 2010-07-07 株式会社ミヤコシ 用紙搬送装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2359825A (en) * 1941-12-12 1944-10-10 Solar Lab Apparatus for decorating
FR1385163A (fr) * 1964-03-11 1965-01-08 Dispositif pour faire adhérer des matières planes au moyen de ventouses
US3741116A (en) * 1970-06-25 1973-06-26 American Screen Process Equip Vacuum belt

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50133203U (fr) * 1974-04-17 1975-11-01

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2359825A (en) * 1941-12-12 1944-10-10 Solar Lab Apparatus for decorating
FR1385163A (fr) * 1964-03-11 1965-01-08 Dispositif pour faire adhérer des matières planes au moyen de ventouses
US3741116A (en) * 1970-06-25 1973-06-26 American Screen Process Equip Vacuum belt

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5553536A (en) * 1994-10-03 1996-09-10 Van Os Enterprises Screen printing apparatus with vacuum conveyor belt
ES2174662A1 (es) * 1998-03-05 2002-11-01 C I M E S S R L Maquina serigrafica para baldosas de ceramica.
CN104354455A (zh) * 2014-11-24 2015-02-18 苏州瑞日纺织科技有限公司 一种印花机布料固定装置
CN115783625A (zh) * 2022-12-27 2023-03-14 河北盛源科技设备股份有限公司 一种便于上料的提升机及其使用方法

Also Published As

Publication number Publication date
JPH0313063B2 (fr) 1991-02-21
EP0102743A3 (fr) 1984-12-05
JPS5920673A (ja) 1984-02-02

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19870922

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Inventor name: YAMASAKI, AKIO

Inventor name: ICHINOSE, SHIRO