EP1099550A2 - Machine d'impression sérigraphique pour imprimer sur des objets cylindriques - Google Patents

Machine d'impression sérigraphique pour imprimer sur des objets cylindriques Download PDF

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Publication number
EP1099550A2
EP1099550A2 EP00203684A EP00203684A EP1099550A2 EP 1099550 A2 EP1099550 A2 EP 1099550A2 EP 00203684 A EP00203684 A EP 00203684A EP 00203684 A EP00203684 A EP 00203684A EP 1099550 A2 EP1099550 A2 EP 1099550A2
Authority
EP
European Patent Office
Prior art keywords
machine according
container
printing
rotation
supporting
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Withdrawn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
EP00203684A
Other languages
German (de)
English (en)
Other versions
EP1099550A3 (fr
Inventor
Gian Piero Barozzi
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.)
Aisa SpA
Original Assignee
Aisa SpA
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 Aisa SpA filed Critical Aisa SpA
Publication of EP1099550A2 publication Critical patent/EP1099550A2/fr
Publication of EP1099550A3 publication Critical patent/EP1099550A3/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Withdrawn legal-status Critical Current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
    • B41F15/08—Machines
    • B41F15/0872—Machines for printing on articles having essentially cylindrical surfaces

Definitions

  • the present invention relates to a rotary machine for the silk-screen printing of substantially cylindrical objects, comprising a vertical axis of rotation, at least one arm supporting at least one printing frame and at least one doctor blade, in which said support arm is movable translationwise parallel to the vertical axis of rotation towards/away from the object to be printed.
  • each frame supporting the screen and the associated doctor blade are constrained to an arm which is in turn hinged on a special fixed upright which is arranged on the peripheral edge of the rotary machine in the region of each printing station.
  • This arm is therefore made to rotate about the fixed hinge so as to cause the raising/lowering of the frame and the doctor blade away from/towards the container to be printed; since the doctor blade is arranged at a distance from the hinge different from that of the screen, the latter performs a rotation through a circumferential arc which is different from that of the doctor blade which therefore is unable to maintain its constant distance from the screen during raising/lowering, resulting in the risk of breakage of the said screen, in particular during raising thereof.
  • the doctor blade must therefore be provided with an autonomous device for effecting translation towards/away from the screen, which moves it away from the latter during the rotational raising movement of both of them by the rotating arm.
  • the known machines have a device for locating the zero generatrix of the container based on the engagement of bevel gears or the like which, being present on each printing station of the rotary machine, result in the need for the relative adjustment and synchronization, thereby complicating considerably re-tooling of the machine when there is a change in size, thereby making the machine unsuitable for the production of small batches and/or frequent changing of the images to be printed.
  • the technical problem which is posed, therefore, is that of providing a rotary machine for the silk-screen printing of substantially cylindrical containers, which solves the abovementioned drawbacks of the known art.
  • the machine should be provided with loading/unloading devices comprising safety means designed to prevent damage to the machine following abnormal interruption in the working stroke, due for example to breakage of the container or accidental interference by the operator during loading/unloading.
  • a rotary machine for the silk-screen printing of substantially cylindrical objects comprising a vertical axis of rotation, at least one arm supporting at least printing frame and at least one doctor blade, means for supporting the object, rotatable about their longitudinal axis, means for rotational actuation, about the vertical axis, of the said means for supporting the container, in which said support arm is movable translationwise parallel to the vertical axis of rotation towards/away from the object to be printed.
  • the machine according to the invention has a substantially circular base along the circumference of which the loading station 100, the printing stations 200 and the unloading station 300 are arranged, being all oriented in radial directions and at a relative angular distance determined in relation to the number of colours to be printed.
  • the structure 10 of the machine supports a central fixed pillar 20 on which a sleeve 11 is coaxially mounted, said sleeve being designed to move translationwise on the pillar 20 from a high position to a lower position, but not to rotate on the said pillar.
  • the said sleeve 11 has, constrained to it, the arms 12 supporting the frame 210 which carries the printing screen 211 and the doctor blade 230 of each printing station 200 located in radial directions.
  • the frame 210 carrying the printing screen 211 is mounted on an upright 212 which is slidable in a radial direction on the arm 12 and can be locked in position on the latter by means of associated screw means 212a.
  • doctor blade 230 which is mounted on an upright 232 which is slidable in a radial direction on the arm 12 and can be locked in position on the latter by means of associated screw means 232a.
  • the bottom part of the upright 212 has, mounted on it, opposing rollers 212b for guiding the frame 210 which is supported on the opposite side by means 241 integral with a carriage 240 movable (Figs. 2,3) in the tangential direction of the machine upon actuation of means known per se and not illustrated nor described in detail.
  • the bottom surface of one of the two tangential sides of the frame 210 also has, constrained to it, a rack 213 which is designed to mesh with a corresponding pinion 214 integral with the shaft 52 (described below) for rotationally actuating the container 1 so that the translation, in a tangential direction, of the frame 210 and hence the printing frame 211 and the rack 213 causes the rotation of the pinion 214 and therefore the container 1, as will be explained more clearly below.
  • the sleeve 11 of the central pillar 20 also has, coaxially mounted on it, a first circular plate 30 which is in turn fixed rotationally, but movable translationwise with the sleeve 11 from a first lowered position (Fig. 7c) to a second raised position (Fig. 3) where it makes contact with means for rotating the container, described further below.
  • the circular plate 30 is also provided underneath with a second circular plate 40 which has a larger diameter and is fixed translationwise with respect to the pillar 20, but is rotationally movable with respect thereto upon actuation of an associated rotating table 41 (Fig. 3).
  • the underlying plate 40 carries the devices 50 for supporting and rotating the container 1, which are arranged in a radial direction and, from the external circumference towards the axis of rotation, comprise (Fig. 4):
  • Said cylinder 53 is mounted on the threaded end-piece 54a of a rubber buffer member 54 which in turn is in abutment against a wheel 61 of the said means 60; the threaded end-piece 54a also has, mounted on it, resilient means 55, the reaction force of which may be adjusted by means of a locking nut 56.
  • Said means 60 for automatically locating the zero position of the container 1 consist (Figs. 4,5a,5b) of a wheel 61 which is coaxially mounted on the shaft 52 and is provided with a radial notch 62 which is designed to engage with a tooth 63a forming the free end of a lever 63, the other end of which is pivotably mounted on a support 64 fixed to the plate 40, between the plate 40 and the lever 63 there being arranged a spring 65 which pushes the lever in anti-clockwise direction and hence the tooth 63a into the notch 62 of the wheel 61.
  • the cyclical operation of the machine may be divided into two separate steps which are synchronized with each other;
  • the angular zero position of the container 1 is restored by means of the device 60 so that the subsequent printing occurs in the correct angular side surface portion of the container 1.
  • automatic gripper means for inserting/removing the container 1 onto/from the buffer member 51 may also be provided, said gripper means being known per se and not described in detail; these gripper means are actuated by an associated device 70 (Fig. 8) comprising a rod 71, the top end of which is connected to a connecting rod 71a integral with a pin 72 for actuating the gripper towards/away from the support for the container 1 and the bottom end of which is connected by means of a safety device 80 to an actuating cam 73 in turn operated by a transmission of the main motor of the machine (not shown).
  • Said safety device 80 consists of a substantially U-shaped fork, in which the ends of the parallel arms 81a of the "U” have a seat 82 with rounded edges 82a into which a pin 74 connected to the ends of the said rod 71 is inserted.
  • any obstacle such as for example an accidental interruption in the working stroke due to breakage of the glass or an incorrect manoeuvre on the part of the operator which opposes the normal outward and return stroke of the rod 71, would cause the pin 74 to be pushed out of its seat 82, preventing the gripper from moving against the obstacle so as to avoid damage to the machine or physical damage to the operator.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Screen Printers (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP00203684A 1999-11-02 2000-10-23 Machine d'impression sérigraphique pour imprimer sur des objets cylindriques Withdrawn EP1099550A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI992283 1999-11-02
IT1999MI002283A IT1313835B1 (it) 1999-11-02 1999-11-02 Macchina serigrafica rotante per la stampa di oggetti cilindrici consupporti dei telai di stampa a movimento rettilineo verso/da l'oggetto

Publications (2)

Publication Number Publication Date
EP1099550A2 true EP1099550A2 (fr) 2001-05-16
EP1099550A3 EP1099550A3 (fr) 2001-09-12

Family

ID=11383881

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00203684A Withdrawn EP1099550A3 (fr) 1999-11-02 2000-10-23 Machine d'impression sérigraphique pour imprimer sur des objets cylindriques

Country Status (3)

Country Link
EP (1) EP1099550A3 (fr)
JP (1) JP2001129963A (fr)
IT (1) IT1313835B1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2856338A1 (fr) * 2003-06-23 2004-12-24 Dubuit Mach Machine d'impression d'objets a protection amelioree vis-a-vis du rayonnement ultraviolet.
CN101612826B (zh) * 2009-07-24 2011-03-02 上海南部塑料制品有限公司 一种用于高印刷精度塑料筒的印刷方法
CN110626054A (zh) * 2019-08-22 2019-12-31 安徽一路明光电科技有限公司 一种led灯灯罩的快速丝印装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1410908A4 (fr) * 2001-06-27 2011-10-05 Berg Industry Co Ltd Dispositif electrostatique d'impression et procede associe

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0239038A2 (fr) * 1986-03-24 1987-09-30 Imtran Industries, Inc. Procédé et dispositif pour décorer des objets par impression sérigraphique
EP0265982A2 (fr) * 1986-10-31 1988-05-04 CERVE S.p.A. Machine pour l'impression sérigraphique multicolore de récipients cylindriques en général
DE3744361A1 (de) * 1987-04-24 1988-11-10 Sasaki Glass Co Druckmaschine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0239038A2 (fr) * 1986-03-24 1987-09-30 Imtran Industries, Inc. Procédé et dispositif pour décorer des objets par impression sérigraphique
EP0265982A2 (fr) * 1986-10-31 1988-05-04 CERVE S.p.A. Machine pour l'impression sérigraphique multicolore de récipients cylindriques en général
DE3744361A1 (de) * 1987-04-24 1988-11-10 Sasaki Glass Co Druckmaschine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2856338A1 (fr) * 2003-06-23 2004-12-24 Dubuit Mach Machine d'impression d'objets a protection amelioree vis-a-vis du rayonnement ultraviolet.
EP1491336A1 (fr) * 2003-06-23 2004-12-29 Machines Dubuit Machine d'impression d'objets à protection améliorée vis-à-vis du rayonnement ultraviolet
US7163267B2 (en) 2003-06-23 2007-01-16 Machines Dubuit Machine for printing on articles, the machine presenting improved protection against ultraviolet radiation
CN101612826B (zh) * 2009-07-24 2011-03-02 上海南部塑料制品有限公司 一种用于高印刷精度塑料筒的印刷方法
CN110626054A (zh) * 2019-08-22 2019-12-31 安徽一路明光电科技有限公司 一种led灯灯罩的快速丝印装置
CN110626054B (zh) * 2019-08-22 2021-04-16 安徽一路明光电科技有限公司 一种led灯灯罩的快速丝印装置

Also Published As

Publication number Publication date
ITMI992283A1 (it) 2001-05-02
ITMI992283A0 (it) 1999-11-02
JP2001129963A (ja) 2001-05-15
EP1099550A3 (fr) 2001-09-12
IT1313835B1 (it) 2002-09-23

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