EP0694385B1 - Automatische Siebdruckmaschine - Google Patents

Automatische Siebdruckmaschine Download PDF

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Publication number
EP0694385B1
EP0694385B1 EP95300659A EP95300659A EP0694385B1 EP 0694385 B1 EP0694385 B1 EP 0694385B1 EP 95300659 A EP95300659 A EP 95300659A EP 95300659 A EP95300659 A EP 95300659A EP 0694385 B1 EP0694385 B1 EP 0694385B1
Authority
EP
European Patent Office
Prior art keywords
endless belt
printing
belt
automatic screen
screen printing
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.)
Expired - Lifetime
Application number
EP95300659A
Other languages
English (en)
French (fr)
Other versions
EP0694385A1 (de
Inventor
Shiro Ichinose
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 EP0694385A1 publication Critical patent/EP0694385A1/de
Application granted granted Critical
Publication of EP0694385B1 publication Critical patent/EP0694385B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B41F15/08—Machines
    • B41F15/0831—Machines for printing webs
    • B41F15/0836—Machines for printing webs by means of cylindrical screens or screens in the form of endless belts
    • 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
    • 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

Definitions

  • the present invention relates to a novel automatic screen printing machine. More particularly, the invention relates to an automatic screen printing machine which features improved printing frame-matching precision, facilitates the printing operation, makes it easy to supervise the operation conditions, and is easy to use.
  • the automatic screen printing machines have been used since old times in wide field of applications and in all of them, the upper surface of the endless belt that serves as the printing surface is maintained horizontal. This is the most natural form for automatically and intermittently driving the endless belt and for driving a squeegee device that effects the printing via a screen, and has generally been accepted and used.
  • Such a machine is disclosed e.g. in EP-A-579 433.
  • the above-mentioned cause stems from the endless belt itself.
  • the fabric tissue that serves as a core of the endless belt is constituted by a synthetic fiber having a large tensile strength.
  • the density of the fabric and the tension of the yarns become inevitably nonuniform at least partly.
  • the endless belt is mounted on the automatic screen printing machine and is adjusted being applied with the tension of from 12 kg to 16 kg per a centimeter of the width prior to being used. This helps guarantee the precision in the direction of intermittent feeding but permitting selvage portions to be partly curved due to a difference in the tension in the direction of width of the belt.
  • both selvages of the endless belt are provided with guide plates over the whole length of the printing zone to limit the phenomenon of zig-zag travelling of the belt.
  • a small gap must be maintained for permitting the curved portions to pass through, which makes it difficult to completely prevent the phenomenon of zig-zag travelling and permits defective frame matching to occur in the direction of width.
  • the object of the present invention therefore is to provide an automatic screen printing machine which features improved printing frame-matching precision, facilitates the printing operation, makes it easy to supervise the operation conditions, and is easy to use.
  • the present invention is concerned with an automatic screen printing machine comprising a printing table, a pair of rollers which are arranged in front of and at the back of the printing table, at least either one of which being driven, an endless belt for supporting a material to be printed, the endless belt being supported by said rollers and the upper half of which being permitted to move on the printing table, and printing units provided on the upper half of the endless belt, wherein the printing table, the pair of rollers, the endless belt and the printing units are all arranged being inclined by a predetermined angle in the direction of width relative to the horizontal plane, and provision is made of a belt guide that comes into contact with a selvage portion of the upper half of the lower side of the endless belt.
  • the printing table, the pair of rollers, the endless belt and the printing unit are all inclined at an angle ( ⁇ ) of from 5 to 15 degrees and, particularly, from 8 to 12 degrees with respect to the horizontal plane.
  • the surface of the upper half of the endless belt 4 that serves as the printing surface is inclined by an angle of ⁇ degrees in the direction of width with respect to the horizontal plane. Therefore, a front roller 2, a rear roller 3 and a printing table 8 are all inclined by the angle of ⁇ degrees, and an the endless belt 4 is conveyed along therewith.
  • An upper belt guide 9 is provided at the left upper portion in Fig. 1 over the whole length of the printing zone as also shown in Fig. 2, and receives the component of force y of the endless belt 4 that acts along the inclination.
  • the endless belt 4 is pushed toward a predetermined direction (leftwards in Fig. 1) at all times, and is conveyed stably and intermittently. Therefore, unlike in the conventional machine in which the endless belt is supported and is conveyed horizontally, there does not occur a phenomenon in which the endless belt 4 travels in a zig-zag manner, and the frame-matching precision is completely maintained in the direction of width of the fabric.
  • Lower belt guides 10 are provided even on the left side of the lower half of the endless belt 4.
  • the endless belt is brought into contact therewith at its lower half, and is properly conveyed.
  • a polishing member is provided on the surfaces of the lower belt guides 10 with which the belt comes into contact, such as by applying an antifriction composition or by sticking a sand-paper or the like. Then, curvature at the selvage of the endless belt 4 is spontaneously polished during the operation, and straightness is maintained contributing to improving the precision.
  • the operation surface can be watched well by an operator as shown in Fig. 1, enabling the whole printing surface to be supervised and the operation efficiency to be improved.
  • the angle ⁇ of inclination with respect to the horizontal plane is determined by taking into consideration the intermittent conveyance of the endless belt 4 and stability in the squeeging operation, and is selected to lie over a range of from 5 to 15 degrees and, particularly, over a range of from 8 to 12 degrees from the practical point of view.
  • the angle is smaller than the above-mentioned range, the effect for preventing the zig-zag travelling and the effect for improving the operation efficiency are little exhibited.
  • the angle is larger than the above-mentioned range, on the other hand, there develop adverse effects such as a decrease in the operation efficiency and dropping of a color paste.
  • Fig. 1 is a sectional view of the automatic screen printing machine of the present invention (X-X cross section in Fig. 2), and Fig. 2 is a side view thereof.
  • the front roller 2 and the rear roller 3 are provided on both sides of machine frames 1A and 1B, and the endless belt 4 is stretched therebetween.
  • the endless belt 4 is intermittently conveyed by a drive device that is not shown in the direction of arrow by a repeat length P in a manner that is widely known.
  • a plurality of printing units 7 each made up of a screen 7A, a print squeegee 7B and a flood squeegee 7C.
  • a printing roller 6 effects the printing in a known manner onto a fabric 5 to be printed adhered to the surface of the endless belt 4.
  • the invention up to this point is the same as that of the conventional automatic screen printing machine.
  • the feature of the present invention resides in that the upper surface of the endless belt 4 that serves as the printing surface is inclined by ⁇ degrees toward the operation side (left side in Fig. 1) with respect to the horizontal plane.
  • Fig. 1 the front roller 2 and the rear roller 3 are supported between the machine frames 1A and 1B of both sides, and on which is wrapped the endless belt 4.
  • a printing table 8 is provided under the endless belt 4 that serves as the printing surface, both of which being arranged inclined by ⁇ degrees with respect to the horizontal plane.
  • an upper belt guide 9 over the whole length of the printing zone as shown in Fig. 2, and on the lower left side thereof are provided lower belt guides 10. These guides support the gravity of the endless belt 4 that acts along the inclination, and work to guide straight the conveyance of the endless belt 4.
  • the endless belt 4 is conveyed straight and properly in one direction while keeping contact with the belt guides 9 and 10 at all times, and does not undergo zig-zag travelling unlike in the conventional machines.
  • the lower part of the endless belt 4 is supported by guide rollers 11 that are provided maintaining a predetermined distance, and a plurality of lower belt guides 10 are provided among them to correct the passage of the lower part of the endless belt 4.
  • an antifriction composition is applied or a sand-paper is stuck to the surfaces of the lower belt guides 10 with which the endless belt 4 comes in contact, such that the end surface of the endless belt 4 is spontaneously polished while the printing machine is in operation and that the endless belt 4 is properly conveyed while correcting the curvature.
  • the squeeging operation is carried out in a manner that when the screen 7A is being lowered, the printing is effected by the print squeegee 7B from the right toward the left in Fig. 1 and when the screen 7A is being ascended, the flood squeeging is effected by the flood squeegee 7C from the left toward the right to reduce the color paste.
  • the printing table, the pair of rollers, the endless belt and the printing units are all arranged being inclined by a predetermined angle in the direction of width with respect to the horizontal plane, and belt guides are provided to come into contact with the selvages of the endless belt of the lower side. Therefore, the endless belt is pushed in the direction of the guides at all times due to the gravity, and is conveyed stably and intermittently in a state where it is strictly specified for its position in the direction of width. Unlike the conventional machine in which the endless belt is horizontally supported and is conveyed, therefore, the endless belt does not undergo zig-zag travelling, and the frame-matching precision is completely maintained in the direction of width of fabric.
  • the operation surface can be viewed well by the operator as shown in Fig. 1, enabling the whole printing surface to be supervised and the operation efficiency to be improved.
  • the lower belt guides are provided for the lower half of the endless belt, so that the endless belt is properly conveyed being pushed thereto on the lower side.
  • a polishing member is provided on the surface of the lower belt guides with which the endless belt comes into contact, so that the curvature at the selvage of the endless belt is spontaneously polished during the operation, that straightness is maintained and that precision is further improved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Screen Printers (AREA)

Claims (4)

  1. Eine automatische Siebdruckmaschine, aufweisend: einen Drucktisch, ein Paar von Rollen, die an der Vorderseite und an der Hinterseite des Drucktisches angeordnet sind, wobei zumindest eine von den Rollen angetrieben wird, ein Endlosband zum Tragen eines zu bedruckenden Materials, wobei das Endlosband durch die genannten Rollen getragen wird und wobei es dessen oberer Hälfte erlaubt wird, sich an dem Drucktisch zu bewegen, und Druckeinheiten, die an der oberen Hälfte des Endlosbandes vorgesehen sind, wobei der Drucktisch, das Paar von Rollen, das Endlosband und die Druckeinheiten alle unter einem vorgegebenen Winkel in der Richtung der Breite in Bezug auf die horizontale Ebene geneigt angeordnet sind und wobei für eine Bandführung Vorkehrungen getroffen sind, welche in Berührung mit einer Kante der oberen Hälfte der unteren Seite des Endlosbandes kommt.
  2. Eine automatische Siebdruckmaschine nach Anspruch 1, bei welcher der genannte Drucktisch, das genannte Paar von Rollen, das genannte Endlosband und die genannten Druckeinheiten alle unter einem Winkel im Bereich von 5 bis 15 Grad in Bezug auf die horizontale Ebene geneigt angeordnet sind.
  3. Eine automatische Siebdruckmaschine nach Anspruch 1 oder 2, bei welcher für zweite Bandführungen Vorkehrungen getroffen sind, welche in Berührung mit der Kante der unteren Hälfte der unteren Seite des Endlosbandes kommen.
  4. Eine automatische Siebdruckmaschine nach Anspruch 1, 2 oder 3, bei welcher für ein Element zum Polieren der Kante des Endlosbandes an den Flächen der zweiten Bandführungen Vorkehrungen getroffen sind, mit welchen die Kante des Endlosbandes in Berührung kommt.
EP95300659A 1994-07-29 1995-02-02 Automatische Siebdruckmaschine Expired - Lifetime EP0694385B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP178646/94 1994-07-29
JP6178646A JPH0839762A (ja) 1994-07-29 1994-07-29 自動スクリーン捺染機

Publications (2)

Publication Number Publication Date
EP0694385A1 EP0694385A1 (de) 1996-01-31
EP0694385B1 true EP0694385B1 (de) 1998-06-03

Family

ID=16052109

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95300659A Expired - Lifetime EP0694385B1 (de) 1994-07-29 1995-02-02 Automatische Siebdruckmaschine

Country Status (5)

Country Link
EP (1) EP0694385B1 (de)
JP (1) JPH0839762A (de)
KR (1) KR100233204B1 (de)
CN (1) CN1119587A (de)
DE (1) DE69502773T2 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08276564A (ja) * 1994-11-09 1996-10-22 Ichinose Internatl:Kk 自動ロータリスクリーン捺染機及びそれのスクリーン洗浄方法
JP4851249B2 (ja) * 2006-06-19 2012-01-11 株式会社沖データ ベルト装置及び画像形成装置
CN104324848B (zh) * 2014-11-05 2016-08-24 新昌县远润纺织机械有限公司 斜台式圆网印花机的上胶装置
CN105479930B (zh) * 2016-02-02 2018-01-23 张永胜 一种倾斜重力送料自动定位的丝网印刷机
CN105500902B (zh) * 2016-02-02 2017-04-26 张永胜 一种倾斜旋转送料的丝网印刷机

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2400728B2 (de) * 1974-01-08 1977-05-26 Mitter & Co, 4815 Schloss Holte Druckmaschine, vorzugsweise siebdruckmaschine
JPS536693A (en) * 1976-07-05 1978-01-21 Tokai Senko Kk Flat screen printing apparatus
JPS5678978A (en) * 1979-11-30 1981-06-29 Kanai Hiroyuki Screen textile printing base and heating method thereof
EP0579433A1 (de) * 1992-07-13 1994-01-19 Ichinose International Incorporated Automatische Siebdruckmaschine und Druckverfahren

Also Published As

Publication number Publication date
DE69502773T2 (de) 1999-01-28
DE69502773D1 (de) 1998-07-09
EP0694385A1 (de) 1996-01-31
JPH0839762A (ja) 1996-02-13
KR960003962A (ko) 1996-02-23
CN1119587A (zh) 1996-04-03
KR100233204B1 (ko) 1999-12-01

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