EP0152156A2 - Procédé et dispositif de lavage de pochoirs dans une machine de sérigraphie à pochoirs plats - Google Patents

Procédé et dispositif de lavage de pochoirs dans une machine de sérigraphie à pochoirs plats Download PDF

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Publication number
EP0152156A2
EP0152156A2 EP85200188A EP85200188A EP0152156A2 EP 0152156 A2 EP0152156 A2 EP 0152156A2 EP 85200188 A EP85200188 A EP 85200188A EP 85200188 A EP85200188 A EP 85200188A EP 0152156 A2 EP0152156 A2 EP 0152156A2
Authority
EP
European Patent Office
Prior art keywords
washing
screen stencil
delivery
screen
housing
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Withdrawn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
EP85200188A
Other languages
German (de)
English (en)
Other versions
EP0152156A3 (fr
Inventor
Shiro Ichinose
Kunio Katsuuma
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 EP0152156A2 publication Critical patent/EP0152156A2/fr
Publication of EP0152156A3 publication Critical patent/EP0152156A3/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Withdrawn legal-status Critical Current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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F35/00—Cleaning arrangements or devices
    • B41F35/003—Cleaning arrangements or devices for screen printers or parts thereof
    • B41F35/005—Cleaning arrangements or devices for screen printers or parts thereof for flat screens

Definitions

  • the present invention relates to a method and unit for washing a screen stencil frame used in a flat screen printing machine. More particularly, the present invention relates to a method and unit for washing a screen stencil frame used in a flat screen printing machine, in which the screen stencil frame can be washed without dismounting the frame from the flat screen printing machine.
  • a method for washing a screen stencil frame in a flat screen printing machine which comprises arranging a delivery member capable of reciprocatively moving on the screen stencil frame, arranging a suction nozzle connected to a vacuum device on said delivery member, reciprocating the delivery member on the screen stencil frame in such a manner that the suction nozzle confronts a screen stencil of the screen stencil frame, and washing the screen stencil with water by utilizing a subatmospheric suction pressure generated by the suction nozzle.
  • a unit for washing a screen stencil frame in a flat screen printing machine which comprises (A) a delivery mechanism provided with a nozzle, (B) a housing mechanism for dismountably housing the delivery mechanism therein and (C) a supporting mechanism for supporting and housing said housing mechanism therein, which is provided with a vacuum mechanism, wherein said supporting mechanism supports the housing mechanism so that the housing mechanism can be connected to a printing unit arranged in the flat screen printing machine, said delivery mechanism comprises a driving member, said delivery mechanism is released from the housing mechanism and reciprocated on the printing unit by said driving member when the housing mechanism is connected to the printing unit, said nozzle is connected to the vacuum mechanism of the supporting mechanism through a predetermined conduit, and said delivery mechanism is arranged in such a positional relationship that when the delivery mechanism is reciprocated on.the printing unit, the delivery mechanism confronts a screen stencil of the screen stencil frame in the printing unit.
  • a fabric 2 to be printed which has been supplied by a fabric supply roller 1
  • a fabric supply roller 1 is fixed to the surface of an endless belt 3 coated with a fixing agent by a fixing agent applying device (not shown) and is delivered intermittently repeat by repeat integrally with the endless belt 3 by a driving roller 4.
  • Printing units 7 are arranged at predetermined intervals above the endless belt 3. Each printing unit 7 comprises a screen stencil frame 5 and a squeegee 6. While the endless belt 3 is driven, the printing units 7 are elevated by several centimeters, and when the endless belt 3 is stopped on completion of feeding of one repeat length, the printing units 7 are brought down and the squeegees 6 are moved in the widthwise direction of the endless belt 3 while applying a printing pressure, whereby printing of the fabric 2 is effected. The printed fabric 2 is introduced into a drying device 8 and is then recovered. The surface of the endless belt 3 is washed with water by a belt washing device 9.
  • Printing of one color in one pattern is completed by the above operation. At this point, for printing of a next color in the same pattern, the squeegee 6 is dismounted from the printing unit 7 manually as in the conventional technique.
  • the screen stencil frame 5 is washed according to the method of the present invention.
  • an air cylinder 10 which is supported and fixed on the printing unit is actuated to elevate the screen stencil frame 5 to a predetermined height together with an adjusting device 11 for supporting the screen stencil frame 5. In this state, washing is carried out.
  • the washing unit to be used in the method of the present invention comprises a supporting body 20, a housing device 21 and a delivery device 22.
  • the housing device 21 is turnably supported and housed in the supporting body 20.
  • An air cylinder 25 is arranged above the supporting body 20 and this air cylinder 25 is connected to a chain wheel 29 through a rack 26, a pinion gear 27 and a chain 28.
  • An arm 30 secured to the housing device 21 is connected to the rotation shaft of the chain wheel 29. It will readily be understood that the housing device 21 is turned by the operation of the air cylinder 25.
  • a vacuum chamber 31 and a blower 32 are arranged in the supporting body 20, and a subatmospheric pressure is generated in the vacuum chamber 31 by the operation of the blower 32.
  • the vacuum chamber 31 is connected to a discharge pump 33 so that a color paste and a washing waste liquid accumulated in the vacuum chamber 31 can be discharged. This discharge can automatically be performed by detecting the level of the washing waste liquid and the like in the vacuum chamber 31.
  • the supporting body 20 is placed on a truck 34 and can be moved on rails 35 along the longitudinal direction of the printing machine.
  • the supporting body 20 When this washing unit is used, the supporting body 20 is moved to a predetermined position and the air cylinder 25 is actuated to turn the housing device 21 and connect it to the printing unit 7 for the washing operation.
  • two-dot chain lines indicate the state where the housing device 21 is housed in the supporting body 20.
  • Fig. 6 which is a sectional front view of the housing device 21 (a view showing the section seen in the direction of arrows G-G in Fig. 3) as well as Fig. 3, the housing device 21 comprises a frame member 40, and rails 41a and 41b to be engaged with wheels of the delivery device 22 are arranged on both the sides of the frame member 40.
  • An air cylinder provided with piston rods 42a and 42b is supported on the arm 30 secured to the frame member 40 to anchor the delivery device 22.
  • the delivery device 22 is supported and housed in the housing device 22.
  • the delivery device 22 comprises an upper truck 50a and a lower truck 50b, and nozzles 5la and 51b are arranged on the trucks 50a and 50b, respectively.
  • the nozzles 5la and 51b are omitted in Fig. 9 for simplification of the illustration.
  • the trucks 50a and 50b are driven by driving motors 52a and 52b, respectively.
  • Wheels 53a and wheels 53b are connected through shafts 54a and 54b.
  • stoppers 55a and 55b are arranged on the upper and lower trucks 50a and 50b, respectively.
  • the upper and lower trucks 50a and 50b are housed in the housing device 21 along the rails 41a and 41b of the housing device 21.
  • the rods 42a and 42b are projected upward and downward from the air cylinder 43 to impinge against the stoppers 55a and 55b, whereby the trucks 50a and 50b are secured in the housing device 21 (see Fig. 7).
  • the upper nozzle 51a is pivoted and supported on the upper truck 50a through an air cylinder 60 so that the angle of an open surface of the upper nozzle 51a can be appropriately changed by the operation of the air cylinder 60.
  • the lower nozzle 51b is arranged on the lower truck 50b so that the lower nozzle 5lb is always opened upward and the open surface is always horizontal.
  • the nozzles 51a and 51b are connected to the vacuum chamber 31 of the supporting body 20 through conduits 6la and 6lb such as rubber hoses. More specifically, a subatmospheric pressure is produced by the operation of the blower 32 of the supporting body 20, and a sucking effect is generated on the nozzles 51a and 51b to effect washing.
  • Horizontal rails 70a and 70b are arranged in the printing unit 7 and extended in the widthwise direction of the machine, and the upper and lower moving trucks 50a and 50b are reciprocated along these rails 70a and 70b in the widthwise direction of the machine.
  • portion X in Fig. 4 shows the section seen in the direction of arrows B-B in Fig. 3.
  • the housing device 21 is turned and secured so that the raisl 41a and 41b are connected to the rails 70a and 70b arranged in the printing unit 7, and in this state, the rods 42a and 42b are sunk inwardly by the operation of the air cylinder 43 arranged in the housing device 21 to release anchoring of the upper and lower moving trucks 50a and 50b.
  • the driving motors 52a and 52b of the trucks 50a and 50b are turned in the normal rotation direction and the upper and lower moving trucks 50a and 50b are moved to the position of the end of the screen stencil frame 5 (the position Yl in the drawings).
  • the air cylinder 60 of the truck 50a is actuated to bring the upper nozzle 5la close to a screen stencil 5a.
  • the screen stencil 5a to be washed is gripped between the upper and lower nozzles 5la and 51b.
  • the blower 32 of the supporting body 20 is actuated to produce a subatmospheric pressure and generate sucking forces in the nozzles 5la and 51b.
  • the moving trucks 50a and 50b are moved to effect washing of the screen stencil 5a.
  • the motors 52a and 52b are driven in the reverse rotation direction and the trucks 50a and 50b are moved to the opposite side.
  • the motors 52a and 52b are synchronously driven to synchronously move the upper and lower moving trucks 50a and 50b, and washing is always effected in the state where the upper nozzle 51a confronts the lower nozzle 51a.
  • the upper and lower moving trucks 50a and 50b can independently be driven, there may be adopted a modification in which suction washing by the upper nozzle 51a and suction washing 51b are separately performed.
  • cleaning members 72a and 72b such as sponges or brushes are arranged in the nozzles 5la and 5lb through sucking spaces 7la and 71b, and it is preferred that water supply pipes 73a and 73b be laid out in these cleaning members 72a and 72b to supply washing water.
  • the cleaning members 72a and 72b are brought into close contact with the screen stencil 5a, and the trucks 50a and 50b are moved to effect sucking and washing while supplying washing water through the water supply pipes 73a and 73b, whereby washing can be carried out very effectively. Since the washing waste liquid is recovered into the vacuum chamber 31 of the supporting body 20, the washing method of the present invention is advantageous in that the region other than the washing zone is not unnecessarily wetted.
  • the top peripheral edges 75a and 75b of the nozzles 51a and 51b are slightly separate from the screen stencil 5a. Namely, air around the nozzles is promptly sucked in the nozzles.
  • the moving direction of the nozzles 5la and 51b is defined by the rails 70a and 70b laid out in the printing unit 7, it is indispensable that the nozzles 51a'and 51b should have such a width as completely covering the width of the screen stencil 5a and especially, the upper nozzle 51a should have a width adapted to the inner width of the screen stencil frame 5.
  • the top end portion of the upper nozzle 51a be tapered and if the nozzle 51a is vertically positioned, the top end 75a of the nozzle 51a be slightly lifted from the screen stencil 5a. If this arrangement is adopted, even the residual color paste left in the corner portions of the screen stencil frame 5 can be removed effectively.
  • cleaning members need not particularly be arranged in the nozzles.
  • the screen stencil frame 5 that is, the screen stencil 5a, is washed by the nozzles with the reciprocative movement of the trucks 50a and 50b.
  • the operation of the blower 32 is stopped, the trucks 50a and 50b are housed in the housing device 21 again, the air cylinder 43 is turned off, the rods 42a and 42b are projected, and the trucks 50a and 50b housed in the housing device 21 are supported and secured.
  • the housing device 21 is turned downward and connection to the printing unit 7 is released, and the housing device 21 is supported and housed at the predetermined position in the supporting body 20 again.
  • the printing unit 7 is brought down, and printing of a next color is performed.
  • driving and stopping of the above-mentioned air cylinder and driving motors can be performed wholly automatically by generating predetermined electric signals by a sequential starting-stopping circuit.
  • the printing repeat length is increased and the fabric width is broadened. Accordingly, the weight of the screen stencil frame is increased, and it is very difficult for one worker to effect dismounting and attachment of the printing stencil frame and this operation requires a great labor and a high skill. According to the present invention, the operation of dismounting and attaching the screen stencil frame need not be performed at the color-changing step, and hence, no additional worker is necessary.
  • the screen stencil frame is once dismounted from the printing machine and the screen stencil frame is washed by a screen stencil frame washing machine.
  • the number of screen stencil frames that can be washed at one time by an ordinary screen stencil washing machine is 3 to 4 at most, and if the amount of the residual color paste is large, a long time is required for completion of the washing operation.
  • washing units are arranged in a number corresponding to the number of colors to be printed, all the screen stencil frames can be simultaneously washed in the state where they are attached to the printing machine. Therefore, the time required for washing the screen stencil frames can be shortened to 5 minutes or less.
  • the screen stencil frame need not be dismounted from the printing unit at the cclor-changing step, no improper registration is caused after washing of the screen stencil frame.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Screen Printers (AREA)
EP85200188A 1984-02-13 1985-02-12 Procédé et dispositif de lavage de pochoirs dans une machine de sérigraphie à pochoirs plats Withdrawn EP0152156A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP59023015A JPS60184850A (ja) 1984-02-13 1984-02-13 フラツトスクリ−ン捺染機におけるスクリ−ン型枠の洗浄方法及び洗浄ユニツト
JP23015/84 1984-02-13

Publications (2)

Publication Number Publication Date
EP0152156A2 true EP0152156A2 (fr) 1985-08-21
EP0152156A3 EP0152156A3 (fr) 1987-05-06

Family

ID=12098662

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85200188A Withdrawn EP0152156A3 (fr) 1984-02-13 1985-02-12 Procédé et dispositif de lavage de pochoirs dans une machine de sérigraphie à pochoirs plats

Country Status (3)

Country Link
EP (1) EP0152156A3 (fr)
JP (1) JPS60184850A (fr)
KR (1) KR850005971A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0502240A1 (fr) * 1991-02-22 1992-09-09 Toshin Kogyo Co. Ltd. Procédé et dispositif de lavage et pour changer de cadre de sérigraphie dans une machine automatique de sérigraphie
US5206970A (en) * 1992-05-11 1993-05-04 Emc Global Technologies, Inc. On-site portable stencil cleaner
EP0642923A1 (fr) * 1993-09-14 1995-03-15 Calcar S.A. Machine à imprimer sérigraphique avec dispositif automatique à succion pour l'enlèvement de l'encre résiduelle
DE19723830A1 (de) * 1997-06-06 1998-12-10 Roland Man Druckmasch Waschvorrichtung zur Reinigung des Druckwerks einer Druckmaschine sowie Vorrichtung und Verfahren zur Entsorgung gebrauchter Waschflüssigkeit
CN114312005A (zh) * 2021-12-16 2022-04-12 中节能太阳能科技（镇江）有限公司 一种精准自动擦网版装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2627431A1 (fr) * 1988-02-19 1989-08-25 Radiotechnique Compelec Machine de serigraphie
JP2524359Y2 (ja) * 1992-08-05 1997-01-29 株式会社ナルトヤ レモンしぼり器
JP4747354B2 (ja) * 2001-02-20 2011-08-17 谷電機工業株式会社 洗浄液を使用するスクリーン版清掃装置
US10906295B2 (en) * 2016-12-05 2021-02-02 Fuji Corporation Printing apparatus and printing system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3580261A (en) * 1969-05-12 1971-05-25 John W Key Printing screen cleaner
FR2291862A1 (fr) * 1974-11-20 1976-06-18 Gali Mallofre Salvador Perfectionnements apportes aux machines a laver les tables d'impression
JPS58132562A (ja) * 1982-02-03 1983-08-06 Fuji Xerox Co Ltd スクリ−ン版洗浄装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS552041A (en) * 1978-06-22 1980-01-09 Hitachi Ltd Screen printer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3580261A (en) * 1969-05-12 1971-05-25 John W Key Printing screen cleaner
FR2291862A1 (fr) * 1974-11-20 1976-06-18 Gali Mallofre Salvador Perfectionnements apportes aux machines a laver les tables d'impression
JPS58132562A (ja) * 1982-02-03 1983-08-06 Fuji Xerox Co Ltd スクリ−ン版洗浄装置

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0502240A1 (fr) * 1991-02-22 1992-09-09 Toshin Kogyo Co. Ltd. Procédé et dispositif de lavage et pour changer de cadre de sérigraphie dans une machine automatique de sérigraphie
US5206970A (en) * 1992-05-11 1993-05-04 Emc Global Technologies, Inc. On-site portable stencil cleaner
EP0642923A1 (fr) * 1993-09-14 1995-03-15 Calcar S.A. Machine à imprimer sérigraphique avec dispositif automatique à succion pour l'enlèvement de l'encre résiduelle
DE19723830A1 (de) * 1997-06-06 1998-12-10 Roland Man Druckmasch Waschvorrichtung zur Reinigung des Druckwerks einer Druckmaschine sowie Vorrichtung und Verfahren zur Entsorgung gebrauchter Waschflüssigkeit
DE19723830C2 (de) * 1997-06-06 2003-01-30 Roland Man Druckmasch Verfahren zum Auffangen und Entsorgen gebrauchter Waschflüssigkeit von einer Waschvorrichtung für eine Druckmaschine und Vorrichtung zur Durchführung des Verfahrens
CN114312005A (zh) * 2021-12-16 2022-04-12 中节能太阳能科技（镇江）有限公司 一种精准自动擦网版装置
CN114312005B (zh) * 2021-12-16 2024-05-14 中节能太阳能科技（镇江）有限公司 一种精准自动擦网版装置

Also Published As

Publication number Publication date
JPS60184850A (ja) 1985-09-20
KR850005971A (ko) 1985-09-28
EP0152156A3 (fr) 1987-05-06

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Inventor name: KATSUUMA, KUNIO