EP0785070A2 - Chariot pour supporter un cadre dans une presse à imprimer comportant un cadre mouvant avec un détecteur d'un obstacle - Google Patents

Chariot pour supporter un cadre dans une presse à imprimer comportant un cadre mouvant avec un détecteur d'un obstacle Download PDF

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Publication number
EP0785070A2
EP0785070A2 EP97200122A EP97200122A EP0785070A2 EP 0785070 A2 EP0785070 A2 EP 0785070A2 EP 97200122 A EP97200122 A EP 97200122A EP 97200122 A EP97200122 A EP 97200122A EP 0785070 A2 EP0785070 A2 EP 0785070A2
Authority
EP
European Patent Office
Prior art keywords
carriage
frame
accordance
holding
obstacle
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Withdrawn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
EP97200122A
Other languages
German (de)
English (en)
Other versions
EP0785070A3 (fr
Inventor
Giorgio Sacchi
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.)
VIERO Srl
Original Assignee
VIERO Srl
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 VIERO Srl filed Critical VIERO Srl
Publication of EP0785070A2 publication Critical patent/EP0785070A2/fr
Publication of EP0785070A3 publication Critical patent/EP0785070A3/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Withdrawn legal-status Critical Current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
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0018—Protection means against injury to the operator
    • 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
    • B41F15/0845—Machines for printing webs with flat screens
    • B41F15/0859—Machines for printing webs with flat screens movable on a long printing table

Definitions

  • the present invention relates to a carriage for the support of printing frames in machines for printing ribbon-like products such as fabrics, paper ribbons or the like.
  • the belt In moving-frame machines the belt is held stationary in a position such as to keep a certain length thereof within the range of the printing frames. The latter are moved into preset positions along the belt for application of the color to the fabric by means of purpose-made printing heads. In machines of this type the moving members have relatively low inertia so that high accuracy in reaching the correct printing positions can be easily achieved.
  • the frame-holding carriages are moved at high speed between the different printing positions along the fabric ribbon.
  • the general purpose of the present invention is to obviate the above mentioned shortcomings by supplying a moving-frame printing machine frame-holding carriage capable of stopping its travel before an obstacle obstructing its motion trajectory without striking it.
  • a frame-holding carriage for machines printing ribbon-like products and of the type moving on the machine along the ribbon-like product between preset printing positions and equipped with motive means and motion control means and characterized in that it comprises means of detecting the presence of obstacles along the motion trajectory with said means connected to means for commanding stopping of the carriage upon detection of an obstacle.
  • the frame-holding carriage detection means in accordance with the present invention allow detecting the obstacle by contact therewith while transmitting thereto only a virtually negligible and nearly constant force during the entire carriage deceleration phase until it stops. There can thus be avoided serious consequences for the safety of the operator who might find himself along the motion trajectory during carriage transit.
  • a support or belt 11 on which lies advantageously fastened by gluing a ribbon 12 of product to be printed.
  • a carriage 15 for support of the printing frame 16.
  • the frame 16 is supported by a frame 17 configured to be slightly offset with respect to the ribbon 12 in accurate adjustment after the carriage 15 reaches a preset printing position.
  • a printing head 18 shown diagrammatically since it can take on quite different configurations.
  • the printing head 18 moves along guides 19 of the carriage 15 and extends transversely to the ribbon 12.
  • the machine 10 also comprises motor means 20 for carriage movement and control means 21 for movement and printing function control.
  • the means 20, 21 are shown diagrammatically since they belong to the prior art and are thus readily imaginable by one skilled in the art as are the connections between them.
  • the frame-holding carriage 15 is equipped with means for detection of obstacles along the motion trajectory and designed to command emergency stopping of the carriage when an obstacle is detected.
  • the detection device in accordance with the present invention comprises a first arm 22 pivoted at one end 23 to the carriage 15 advantageously opposite a riser 24 of the carriage structure.
  • the arm 22 is pivoted at the other end 25 to one end 26 of a second arm 27.
  • the arms 22, 27 constitute a jointed unit extending towards the exterior of the carriage 15 in the direction of motion.
  • the arm 27 supports at the other end 28 an obstacle-interception element 29 arranged in the machine's external edge zone.
  • the element 29 extends at least partly transversely to the trajectory of motion of the carriage and vertically to involve the machine portion near which the operator might be.
  • pairs of interception elements 29 turned in the same direction of motion are connected by elements 42 such as cables or the like extending transversely to the belt 12 and near it so as to intercept even possible obstacles present on the belt 11.
  • the jointed arms of the detection device are movable between an initial extended or rest position in which they can contact through the interception elements 29, 42 any obstacle present in the trajectory of the carriage 15 before the carriage reaches the obstacle and a final contracted position.
  • the amplitude of travel of the jointed arms between the initial extended position and the position of full contraction possible with a stationary obstacle is dimensioned to be greater than the space necessary for emergency stopping of the frame-holding carriage 15 traveling at full operational speed.
  • the carriage 15 stops with the arms 22, 27 in partially contracted position even in case of immobility of the obstacle to thus avoid striking the latter directly with its shape and transmitting thereto its impact force.
  • elastic means 30 consisting for example of a wire spring (shown in Figures 2 and 3) with ends pressing against respective strikers 31, 32 of the arms to keep the detection device in extended position.
  • the spring 30 has elastic characteristics such as to supply virtually constant reaction force between the initial extended positions and the final contracted positions of the arms. In addition the above mentioned reaction force is sufficiently low to transmit to the obstacle a negligible impact force.
  • Advantageously spring means 33 of equal elastic characteristics can also be provided at the joint between the arm 22 and the carriage structure 24.
  • the frame-holding carriage in accordance with the present invention comprises control means for emergency stopping upon detection of an obstacle by the detection means 22, 27, 29, 42.
  • the control means can consist for example of microswitches 34, 35 arranged in a position such as to be operated respectively by the relative movement of the arms 22, 27 and by the movement of the arm 22 with respect to the carriage structure 24.
  • the microswitch 34 is integral with the arm 22 and advantageously housed within its channel. Operation takes place by means of detection of the running a roller 36 thereof on a corresponding surface 37 of an element 38 integral with the arm 27 upon occurrence of a relative rotation of the two arms.
  • the microswitch 35 is integral with the carriage structure and advantageously housed within the channel of the riser 24. Operation takes place by running of one of its rollers 39 on a rod 40 integral with the arm 22 upon occurrence of a rotation of this arm with respect to the carriage structure.
  • An opening 41 is provided in the wall of the riser 24 for passage of the rod 40.
  • microswitches 34, 35 are connected in a well known manner, and accordingly not described in detail, with the control means 21 and the motor means 20 to command an emergency stop of the frame-holding carriage if an impact of the interception elements 29 or 42 against an obstacle causes relative rotation of the arms 22, 27 and/or the arm 22 with respect to the carriage structure.
  • the interception elements 29 could consist of mutually independent plate-like elements with faces turned in the direction of movement of the carriage. These plates could be pivoted on the arms 27 or could be advantageously rigidly constrained to the arms so that upon contraction of the jointed device the plate would direct itself outward while accompanying the obstacle to a safe position outside the range of the carriage 15.
  • a printing machine could be equipped with a plurality of frame-holding carriages each equipped with the detection devices described here.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Impression-Transfer Materials And Handling Thereof (AREA)
  • Handling Of Sheets (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP97200122A 1996-01-17 1997-01-15 Chariot pour supporter un cadre dans une presse à imprimer comportant un cadre mouvant avec un détecteur d'un obstacle Withdrawn EP0785070A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI960028U 1996-01-17
ITMI960028 IT240384Y1 (it) 1996-01-17 1996-01-17 Carro porta-quadro per macchine di stampa a quadro mobile, consensore di rilevamento della presenza di ostacoli

Publications (2)

Publication Number Publication Date
EP0785070A2 true EP0785070A2 (fr) 1997-07-23
EP0785070A3 EP0785070A3 (fr) 1998-01-14

Family

ID=11372870

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97200122A Withdrawn EP0785070A3 (fr) 1996-01-17 1997-01-15 Chariot pour supporter un cadre dans une presse à imprimer comportant un cadre mouvant avec un détecteur d'un obstacle

Country Status (4)

Country Link
EP (1) EP0785070A3 (fr)
KR (1) KR970058927A (fr)
BR (1) BR9700704A (fr)
IT (1) IT240384Y1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6827414B2 (en) * 2002-04-23 2004-12-07 Brother Kogyo Kabushiki Kaisha Method of detecting an obstacle interfering with ink-jet printing head, and ink-jet printing method and printer where the obstacle is detectable
WO2006128849A2 (fr) 2005-05-30 2006-12-07 Agfa Graphics Nv Procede et detecteur anti-collision
EP1790474A1 (fr) * 2005-11-28 2007-05-30 Kba-Giori S.A. Machine d'impression sur feuilles ou sur bobines
WO2011101148A3 (fr) * 2010-02-17 2011-10-20 Dieffenbacher System-Automation Gmbh Dispositif et procédé pour imprimer une image polychrome sur des surfaces de panneaux de matériau, notamment des panneaux de bois
US8789462B2 (en) 2008-09-15 2014-07-29 Hewlett-Packard Development Company, L.P. Method and system for maintaining substantially uniform pressure between rollers of a printer
CN106079859A (zh) * 2016-07-27 2016-11-09 浙江东山广信数码印花设备有限公司 双伺服电机驱动的高精度跑台印花机
WO2020046280A1 (fr) * 2018-08-28 2020-03-05 Hewlett-Packard Development Company, L.P. Détection d'obstacle
CN113135035A (zh) * 2020-01-20 2021-07-20 海德堡印刷机械股份公司 用于在印刷机上操纵印刷版的设备
CN114103403A (zh) * 2021-11-22 2022-03-01 绍兴金楚印染有限公司 一种针对厚重绒布织物进行印花的磁棒式平网印花机

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3106890A (en) * 1961-01-26 1963-10-15 Alsacienne Constr Meca Frame printing machine
DE1196158B (de) * 1957-02-11 1965-07-08 Ignacio Sagnier Vidal Vorrichtung zum selbsttaetigen Vorschub des die Schablone tragenden Wagens in Film-druckmaschinen
EP0458098A2 (fr) * 1990-05-21 1991-11-27 Erwin Jenkner Dispositif de protection et d'arrêt

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1196158B (de) * 1957-02-11 1965-07-08 Ignacio Sagnier Vidal Vorrichtung zum selbsttaetigen Vorschub des die Schablone tragenden Wagens in Film-druckmaschinen
US3106890A (en) * 1961-01-26 1963-10-15 Alsacienne Constr Meca Frame printing machine
EP0458098A2 (fr) * 1990-05-21 1991-11-27 Erwin Jenkner Dispositif de protection et d'arrêt

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6827414B2 (en) * 2002-04-23 2004-12-07 Brother Kogyo Kabushiki Kaisha Method of detecting an obstacle interfering with ink-jet printing head, and ink-jet printing method and printer where the obstacle is detectable
WO2006128849A2 (fr) 2005-05-30 2006-12-07 Agfa Graphics Nv Procede et detecteur anti-collision
WO2006128849A3 (fr) * 2005-05-30 2007-04-05 Agfa Graphics Nv Procede et detecteur anti-collision
EP1790474A1 (fr) * 2005-11-28 2007-05-30 Kba-Giori S.A. Machine d'impression sur feuilles ou sur bobines
WO2007060624A1 (fr) * 2005-11-28 2007-05-31 Kba-Giori S.A. Machine d'impression alimentee en feuilles ou en nappe
US8789462B2 (en) 2008-09-15 2014-07-29 Hewlett-Packard Development Company, L.P. Method and system for maintaining substantially uniform pressure between rollers of a printer
CN102858550A (zh) * 2010-02-17 2013-01-02 迪芬巴赫自动化系统有限公司 用于使材料板、特别是木板的表面打印有多色图像的装置和方法
US20130008333A1 (en) * 2010-02-17 2013-01-10 Thomas Peter Device and method for printing surfaces of material panels, especially wood panels, with a multi-colour image
WO2011101148A3 (fr) * 2010-02-17 2011-10-20 Dieffenbacher System-Automation Gmbh Dispositif et procédé pour imprimer une image polychrome sur des surfaces de panneaux de matériau, notamment des panneaux de bois
CN102858550B (zh) * 2010-02-17 2016-06-22 迪芬巴赫自动化系统有限公司 用于使材料板、特别是木板的表面打印有多色图像的装置和方法
CN106079859A (zh) * 2016-07-27 2016-11-09 浙江东山广信数码印花设备有限公司 双伺服电机驱动的高精度跑台印花机
WO2020046280A1 (fr) * 2018-08-28 2020-03-05 Hewlett-Packard Development Company, L.P. Détection d'obstacle
US11413892B2 (en) 2018-08-28 2022-08-16 Hewlett-Packard Development Company, L.P. Obstacle detection
CN113135035A (zh) * 2020-01-20 2021-07-20 海德堡印刷机械股份公司 用于在印刷机上操纵印刷版的设备
CN114103403A (zh) * 2021-11-22 2022-03-01 绍兴金楚印染有限公司 一种针对厚重绒布织物进行印花的磁棒式平网印花机
CN114103403B (zh) * 2021-11-22 2022-12-06 绍兴金楚印染有限公司 一种针对厚重绒布织物进行印花的磁棒式平网印花机

Also Published As

Publication number Publication date
IT240384Y1 (it) 2001-04-02
BR9700704A (pt) 1998-09-01
KR970058927A (ko) 1997-08-12
ITMI960028U1 (it) 1997-07-17
EP0785070A3 (fr) 1998-01-14
ITMI960028V0 (it) 1996-01-17

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