EP0916487A2 - Cadre de mise en tension - Google Patents

Cadre de mise en tension Download PDF

Info

Publication number
EP0916487A2
EP0916487A2 EP98121078A EP98121078A EP0916487A2 EP 0916487 A2 EP0916487 A2 EP 0916487A2 EP 98121078 A EP98121078 A EP 98121078A EP 98121078 A EP98121078 A EP 98121078A EP 0916487 A2 EP0916487 A2 EP 0916487A2
Authority
EP
European Patent Office
Prior art keywords
tensioning
frame
clamping
template
strips
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
EP98121078A
Other languages
German (de)
English (en)
Other versions
EP0916487A3 (fr
EP0916487B1 (fr
Inventor
Milan Podlipec
Bostjan Podlipec
Janez Zepic
Kilijan Vizjak
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.)
LPKF doo
Original Assignee
LPKF doo
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 LPKF doo filed Critical LPKF doo
Priority to SI9830172T priority Critical patent/SI0916487T1/xx
Publication of EP0916487A2 publication Critical patent/EP0916487A2/fr
Publication of EP0916487A3 publication Critical patent/EP0916487A3/fr
Application granted granted Critical
Publication of EP0916487B1 publication Critical patent/EP0916487B1/fr
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
    • B41F15/14—Details
    • B41F15/34—Screens, Frames; Holders therefor
    • B41F15/36—Screens, Frames; Holders therefor flat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N1/00—Printing plates or foils; Materials therefor
    • B41N1/24—Stencils; Stencil materials; Carriers therefor
    • B41N1/248—Mechanical details, e.g. fixation holes, reinforcement or guiding means; Perforation lines; Ink holding means; Visually or otherwise detectable marking means; Stencil units

Definitions

  • the invention relates to a tenter frame for perforations at their edges Clamping stencils made of metal or plastic films, especially for the Stencil printing, with an actuable in the frame by means of a printing medium Clamping device for adjustable clamping bars is arranged, the gripping pins in the Engage the perforations in the template.
  • WO 97/03 833 has already made known the clamping means of one To operate the clamping frame by means of pressurized clamping hoses. Here requires that Functionality, however, the arrangement of an additional spring device.
  • the invention has for its object to provide a tenter, which is simple and inexpensive construction also due to a high and even on the the entire working surface of the stencil is characterized by the applicable clamping force.
  • one in the clamping frame by means of a pressure medium actuatable clamping device for adjustable clamping strips is arranged, the gripping pins in Intervene perforations of a template and the clamping device from in one Frame profile arranged, can be applied evenly with a pressure medium, elastic deformable tensioning hoses is formed, on which the tensioning strips in their front full length, and the tension bars are provided on the back with swivel cams are supported on an end profile of the frame profile, in such a way that the tensioning strips by means of the tensioning hoses can be swiveled onto the swivel cams to tension the template are.
  • the swivel cams are on the Back tensioning strips, extending essentially over their entire length, off-center arranged, the tensioning tubes for tensioning the template on the front, in essentially in the middle.
  • Such an arrangement of the pivot cams supports the Clamping strips are extremely effective over their full length. It also results from this Arrangement a pronounced supportive leverage effect by means of the tension hoses applied clamping forces.
  • tensioning hoses in Frame profile fixed connectors are interconnected. As has been shown so an exact positioning of the tensioning hoses is possible, causing harmful deformations be avoided.
  • the frame profile of the Tenter frame U-shaped and closed by an inserted end profile in such a way that an inner space is formed in which the connectors as Corner connectors, as well as the tensioning hoses and the tensioning strips are arranged.
  • connection pieces for the Tension hoses and with guide channels for a pressure medium and that a Connector is additionally provided with an inlet led to a pressure medium. It it is possible to use a single hose to very easily tighten the hose Apply pressure source evenly.
  • the connecting pieces are formed in two parts and from one Corner piece and consist of a connector, the corner piece with a Connection piece for a tensioning hose and with a right angle to the connection piece arranged insertion opening is provided for a mounting pin of the connector.
  • the connector also has an extending in the direction of the mounting pin Connection piece for another tension hose.
  • the Plug connection is sealed by means of at least one sealing ring. That way is with the establishment of the connector also ensures a secure connection.
  • the tensioning strips in the frame profile, arranged in pairs opposite each other, in the area of the edges of the template to be tensioned are. You can choose between two tension bars or four tension bars in the frame profile be arranged in pairs opposite each other. According to a preferred embodiment of the Invention, four tensioning strips are arranged in pairs opposite one another, so that the Template can advantageously be stretched on its four sides. It follows from this a particularly good flatness of the template.
  • the gripping pins of the tensioning strips are preferably made in the region of the edges of the templates the frame profile, through openings.
  • the gripper pins are therefore included able to grasp and stretch the templates in the frame level.
  • regulating screws are arranged in the area of the clamping strips are that limit the clamping path of the clamping strips adjustable. It is possible that on the Adjust and optimize the template acting tension.
  • the gripping pins of the clamping strips in their section which are made of protrudes the stenter, are approximately semicircular in cross section, wherein flattened edges are aligned in the clamping direction of the stencil along its The edges are perforated to match the shape and arrangement of the gripper pins Tension bars corresponds. Due to this design, the gripping pins are used in the The clamping forces introduced into the template are optimally introduced into them.
  • the flattened edges of the gripping pins are preferably perpendicular to the plane of the templates guided at an angle and designed as an undercut. This has the advantage that the Stencils gripped very securely by the gripper pins during clamping and then held securely become.
  • Template on the clamping frame cover strips can be attached, which also on the gripper pins Grab clamping bars.
  • the cover strips are preferably provided with elongated holes and on Clamping frame can be attached by sliding it on.
  • the stenter 1 is of a U-shaped Frame profile 2 formed, which is closed by an end profile 3 with a support surface 3a is.
  • the frame profile 2 are a tensioning hose 4 and one resting on the tensioning hose 4
  • Tension bar 5 arranged in the frame profile 2
  • the clamping bar 5 is on a longitudinal edge with gripping pins 6 Mistake.
  • the gripping pins are from the frame profile 2 Openings 7 through, in the area of the edges 8 of a template 9 to be tensioned led out.
  • the gripping pins 6 engage in perforations 10 in the template 9, which are made of 6 can be seen.
  • the gripping pins 6 are, as can be seen in particular from FIG. 4, in their section 11 which protrudes from the stenter 1, approximately semicircular in cross section.
  • Flattened edges 12 of section 11 are in the clamping direction of template 9 aligned, along their edges 8, as can be seen from FIG. 6, with perforations 10 is provided, which corresponds to the shape and arrangement of the gripping pins 6 on the clamping bars 5.
  • the flattened edges 12 of the gripper pins 6 are otherwise obliquely perpendicular at an angle led to the level of the template 9 to be tensioned and designed as an undercut. Due to this design, the template 9 of the gripping pins 6 of the clamping bars 5th kept safe. Also by means of the flattened edges 12 of the gripping pins 6 Clamping forces optimally introduced into the template 9.
  • cover strips are on the clamping frame 15 provided.
  • the cover strips 15 have slots 15a with lugs 15b and can be attached to the stenter 1 by sliding it on.
  • the Cover strips 15 press the perforations 10 of the template 9 securely onto the gripping pins 6 and cover these.
  • the cover strips 15 are on the tenter in the area of the edges 8 of the Template 9 and the clamping strips 5 arranged with their gripping pins 6.
  • the clamping strips 5 are, as can also be seen from FIG. 3, with one each over their full length extending pivot cam 17 provided on the end profile 3 of the Frame profile 1 supports.
  • the pivot cam 17 lies against it, as shown in FIG. 2 the support surface 3a of the end profile.
  • the end profile 3 can be part of the frame profile 2 or an additional component arranged in the frame profile 2. It is essential that the support surface 3a is provided for the pivot cam 17.
  • the tensioning bars 5 are Clamp the template 9 attached to the gripping pins 6 with their perforations Swivel cam 17 can be swiveled into the position shown in dashed lines in FIG. 2. In this position, the template 9 is stretched.
  • the swivel angle of the clamping strips 5 is by means of Adjustable screws 18 adjustable, which are arranged adjustable in the end profile 3. It is thus also an adaptation of the tenter frame 1 to the arrangement of the perforations 10 different templates 9 possible.
  • the regulating screws 18 are, as from FIG. 1 can be seen, arranged distributed around the outer sides of the tenter frame 1.
  • the Tension bars 5 instead of a pivot cam 17 extending over the entire length, the Tension bars 5 alternatively with individual, distributed over their length in the pivot line arranged pivot cams 17 may be provided. Even then it is always very precise Swiveling the clamping strips 5 guaranteed.
  • the tensioning hoses 4 arranged in a free space 19 of the frame profile 2 are in Frame profile 1 fixed connectors connected to each other by a corner piece 20th and a connector 21 are formed.
  • Each corner piece 20 is with a connecting piece 22 for one of the tensioning hoses 4 and at right angles to the connecting piece 22 arranged insertion opening 23 provided.
  • the connector 22 and the insertion opening 23 are connected to one another via a guide channel 24 for the pressure medium.
  • the connector 21 is provided with a mounting pin 25, which during the assembly of the Connectors can engage in the insertion opening 23 of the corner piece 20. Of the Mounting pin 25 is via a guide channel 26 for the pressure medium with a connecting piece 27 of the connector 21 connected. By means of the connecting piece 27 that Connector 21 can be connected to one of the tension hoses 4.
  • a corner piece 20 of the Tenter frame 1 is additionally provided with a connection 28 via which the guide channels 24 and 26, as well as the tensioning hoses 4, with a pressure source not shown in the drawing can be connected.
  • the mounting pin 25 is on its circumference with two Provide sealing rings 29 which seal the connection.
  • another pressure medium can also be used in the tensioning hoses 4, such as B. also a liquid. Basically it is due to the even Action of a pressure medium, preferably compressed air, on all tensioning hoses 4 possible to apply all four sides of a template simultaneously and evenly in the stenter 1 tighten.
  • the pressure medium acts in all four via the closed hose system Side profiles of the tenter frame 1.
  • the frame profile 2 is otherwise designed so that, if necessary two opposite clamping strips 5 can be removed. In this case it is possible to stretch the template 9 on two sides.
  • the stenter 1 according to the invention is therefore very universally applicable.
  • the tensioning frame 1 according to the invention is characterized in that its Basic construction consisting essentially of just two different aluminum profiles exists and thus an inexpensive production is possible.
  • the assembly of the tenter frame 1 is also made considerably easier by the Tensioning hoses 4 before they are installed in the tensioning frame 1 with the connecting pieces 22 and 27 the corner piece 20 and the connecting piece 21 are connected.
  • This form of pre-assembled tensioning hoses 4 is then used to insert the mounting pin 14 into the insertion openings 23 of the corner pieces 20.
  • the inventive design of the connectors and their arrangement in corner areas trouble-free assembly and arrangement of the tensioning hoses 4 in the tensioning frame 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Screen Printers (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Clamps And Clips (AREA)
  • Polarising Elements (AREA)
EP98121078A 1997-11-10 1998-11-06 Cadre de mise en tension Expired - Lifetime EP0916487B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9830172T SI0916487T1 (en) 1997-11-10 1998-11-06 Stretching frame

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19749449A DE19749449C1 (de) 1997-11-10 1997-11-10 Spannrahmen
DE19749449 1997-11-10

Publications (3)

Publication Number Publication Date
EP0916487A2 true EP0916487A2 (fr) 1999-05-19
EP0916487A3 EP0916487A3 (fr) 2000-01-26
EP0916487B1 EP0916487B1 (fr) 2002-03-13

Family

ID=7848062

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98121078A Expired - Lifetime EP0916487B1 (fr) 1997-11-10 1998-11-06 Cadre de mise en tension

Country Status (7)

Country Link
US (1) US6038969A (fr)
EP (1) EP0916487B1 (fr)
JP (1) JP2989180B2 (fr)
CN (1) CN1110415C (fr)
AT (1) ATE214330T1 (fr)
DE (1) DE19749449C1 (fr)
SI (1) SI0916487T1 (fr)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6494134B2 (en) * 2001-04-17 2002-12-17 Gunter Erdmann Frame for foil stencil and stencil foil assembly
US6588334B2 (en) * 2001-10-09 2003-07-08 Ronald Salisbury Screen printing frame assembly having hollow connectors with drain holes
DE10154265A1 (de) * 2001-11-05 2003-05-22 Laserjob Gmbh Spannrahmen mit Druckschablone
GB2388073B (en) 2002-05-02 2004-06-23 Tannlin Ltd Printing screens, frames therefor and printing screen units
GB2407799B (en) 2003-11-07 2006-02-08 Dek Int Gmbh A frame unit for tensioning a printing screen and a jig for fitting a printing screen to or removing a printing screen from a frame unit
DE102004028448B4 (de) * 2004-06-14 2007-08-02 Lpkf Laser & Elektronika D.O.O. Schutzvorrichtung zum Halten einer Druckschablone und Schablonenspannrahmen
GB2435011B (en) * 2006-02-08 2010-06-02 Dek Int Gmbh Printing screens, frames therefor and printing screen units
GB2455493A (en) * 2007-10-08 2009-06-17 Dek Int Gmbh Frame assembly for tensioning de-mountable printing screens
CN102794981B (zh) * 2011-05-25 2016-01-20 深圳市鹏亚科技有限公司 Smt模板钢片气动网框及配合使用的smt模板钢片
TW201315322A (zh) * 2011-09-16 2013-04-01 Askey Technology Jiangsu Ltd 佈錫於印刷電路板用的固定框及組合式固定裝置
CN103042819A (zh) * 2011-10-13 2013-04-17 亚旭电子科技(江苏)有限公司 布锡于印刷电路板用的网板
JP5496433B1 (ja) * 2012-06-11 2014-05-21 株式会社メイコー スクリーン印刷版
WO2013186836A1 (fr) * 2012-06-11 2013-12-19 株式会社メイコー Plaque de sérigraphie
US9370108B2 (en) * 2013-12-31 2016-06-14 Det International Holding Limited Stencil assembly structure
CN105599430B (zh) * 2015-12-17 2017-12-29 衢州顺络电路板有限公司 一种smt激光模板
KR101656022B1 (ko) * 2016-03-24 2016-09-08 (주)본트로닉스 인쇄스크린 유닛
KR101685899B1 (ko) * 2016-04-28 2016-12-13 (주)본트로닉스 인쇄스크린 프레임 고정장치
CN106626731B (zh) * 2016-12-21 2018-11-16 绍兴百嘉汽车电子仪表有限公司 丝网印刷装置
CN106585075B (zh) * 2016-12-21 2018-10-30 江西大海彩印包装有限公司 印刷机
KR101931928B1 (ko) * 2017-11-24 2018-12-24 (주)본트로닉스 인쇄스크린 프레임 고정장치
CN109954633B (zh) * 2019-04-28 2020-06-19 上海交通大学 一种角落夹板定位张紧装置
GB2586610A (en) 2019-08-28 2021-03-03 Asm Assembly Systems Singapore Pte Ltd Reinforced tensioning frame
GB201916469D0 (en) 2019-11-13 2019-12-25 Asm Assembly Systems Singapore Pte Ltd Screen loading system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2920874A1 (de) * 1979-05-23 1980-12-04 Elmar Dr Messerschmitt Spanngeraet zum spannen von siebdruckgeweben auf siebdruckrahmen
WO1992008616A1 (fr) * 1990-11-19 1992-05-29 Prss-Maschinen Ag Dispositif pour l'impression de pate a souder ou de pate conductrice
WO1997003833A1 (fr) * 1995-07-20 1997-02-06 Alpha Fry Ltd. Appareil servant a supporter et a tendre un pochoir

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3176843A (en) * 1962-01-09 1965-04-06 Entoleter Screen tensioner
US4442772A (en) * 1982-10-26 1984-04-17 American Screen Printing Equipment Company Screen tensioning apparatus
EP0141236B1 (fr) * 1983-11-04 1987-06-16 G.BOPP & Co. AG Metallgewebe- und Drahtwarenfabrik Dispositif pour tendre un tissu rectangulaire
CN2084000U (zh) * 1990-10-19 1991-09-04 李江 自绷网式丝印网框
US5819651A (en) * 1993-05-12 1998-10-13 Zeltra, Podjetje Za Projektiranje, Proizvodnjo In Trgovino Elektrotehnike,Naklo,D.O.O. Clamping-stretching system for stencils for screen printers,with printing table for PC boards
DE19530373A1 (de) * 1994-11-05 1996-05-09 Bengel & Bros Bebro Schablonenhalter
CN2233835Y (zh) * 1995-09-25 1996-08-28 北京市孔雀产业公司 齿盘式丝网绷紧机构

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2920874A1 (de) * 1979-05-23 1980-12-04 Elmar Dr Messerschmitt Spanngeraet zum spannen von siebdruckgeweben auf siebdruckrahmen
WO1992008616A1 (fr) * 1990-11-19 1992-05-29 Prss-Maschinen Ag Dispositif pour l'impression de pate a souder ou de pate conductrice
WO1997003833A1 (fr) * 1995-07-20 1997-02-06 Alpha Fry Ltd. Appareil servant a supporter et a tendre un pochoir

Also Published As

Publication number Publication date
SI0916487T1 (en) 2002-08-31
EP0916487A3 (fr) 2000-01-26
ATE214330T1 (de) 2002-03-15
JPH11216839A (ja) 1999-08-10
DE19749449C1 (de) 1999-01-07
EP0916487B1 (fr) 2002-03-13
CN1110415C (zh) 2003-06-04
US6038969A (en) 2000-03-21
JP2989180B2 (ja) 1999-12-13
CN1222447A (zh) 1999-07-14

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