EP0081614B1 - Siebdruckmaschine mit einer von einem Elektromagnet betätigten Vorrichtung zum Absenken der Rakel - Google Patents

Siebdruckmaschine mit einer von einem Elektromagnet betätigten Vorrichtung zum Absenken der Rakel Download PDF

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Publication number
EP0081614B1
EP0081614B1 EP19810401997 EP81401997A EP0081614B1 EP 0081614 B1 EP0081614 B1 EP 0081614B1 EP 19810401997 EP19810401997 EP 19810401997 EP 81401997 A EP81401997 A EP 81401997A EP 0081614 B1 EP0081614 B1 EP 0081614B1
Authority
EP
European Patent Office
Prior art keywords
arm
doctor blade
squeegee
electromagnet
abutment surface
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
Application number
EP19810401997
Other languages
English (en)
French (fr)
Other versions
EP0081614A1 (de
Inventor
Jacques Monvoisin
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.)
TECAL Sarl
Original Assignee
TECAL Sarl
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 TECAL Sarl filed Critical TECAL Sarl
Priority to EP19810401997 priority Critical patent/EP0081614B1/de
Priority to DE8181401997T priority patent/DE3174529D1/de
Publication of EP0081614A1 publication Critical patent/EP0081614A1/de
Application granted granted Critical
Publication of EP0081614B1 publication Critical patent/EP0081614B1/de
Expired 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
    • B41F15/0886—Machines for printing on conical or frusto-conical surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/08—Machines
    • B41F15/0804—Machines for printing sheets
    • B41F15/0813—Machines for printing sheets with flat screens
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/40—Inking units
    • B41F15/42—Inking units comprising squeegees or doctors

Definitions

  • Automatic screen printing machines include generally complex means for synchronized control of the relative movements of the screen, the squeegee and the object to be printed. These movements comprise, in a known type of machine, a relative translation of the screen relative to the squeegee (the screen being fixed for printing flat surfaces, while it is the squeegee which is fixed for the impression of cylindrical surfaces), a lowering of the squeegee and a simultaneous lifting of the object-holding part.
  • FR-A-1 265 995 describes (page 3, from the last paragraph of the left column; see in particular Figure 9), an automatic screen printing machine, comprising synchronized movement control means comprising a relative translation of the screen with respect to a squeegee, a lowering of the squeegee and a simultaneous lifting of the object-holding part, in which the mechanism for lowering and lifting the squeegee-piece comprises a controlling electromagnet lowering the squeegee and an arm articulated at a fixed point relative to the translation means of the squeegee.
  • the machine according to the invention is characterized by a return spring of the abovementioned arm in a position corresponding to the raised position of the squeegee, by a member having an abutment surface above said arm, a link having an axis integral with said arm and carrying at its end the axis of a wheel placed in abutment against said abutment surface, a rod linked at one end to this rod so as to cause it to oscillate about its axis, an electromagnet having a part mobile integral with the other end of said rod and means for causing the brief excitation of the electromagnet to control the lowering of the squeegee.
  • the chassis 1a, 1b, 2 of the machine supports, in the vicinity of its rear face, two horizontal tubes 3-4 on which respectively slide a table 5 for supporting the squeegee device and a table 6 for supporting the screen device,
  • a table 5 for supporting the squeegee device
  • a table 6 for supporting the screen device
  • One or the other of the tables is driven, from a motor not shown, by one rod-crank systems 7-8 and 9-10 respectively.
  • Table 5 has on its underside brackets 50-51 for supporting the axes of respective central knurls 52-53.
  • the thumb wheel 52 rolls on the upper face of a horizontal guide bar 11 linked to the uprights 1a-1b of the chassis, while the knurled wheel 53 rolls in a groove made in a horizontal guide bar 12 also linked to the uprights 1 a-1 b.
  • These two knobs ensure rigid guidance of the sliding of the table 5, thus preventing any deflection of the tube 3.
  • the table 6 carries on its upper face two brackets 60 for supporting the axes of two knobs 61-62 which roll on the lower face of the bar 11 and, on its lower face, a bracket 63 for supporting the axis a wheel 64 which rolls on the upper face of a horizontal guide bar 13 linked to the uprights 1a-1b of the chassis.
  • Figures 4 and 5 show that the arm 15 is embedded between two pieces 150-151 fixed above the table 5 and to which are themselves fixed two columns 152 which support a stop plate 17, as well as an electro- magnet 21.
  • a link 19 has its axis 190 secured to the arm 15 and is driven in oscillation around this axis by a rod 20 linked to the movable part 210 of the electromagnet 21.
  • the link 19 carries at its end the axis of a thumbwheel 191 in abutment on the underside of the plate 17.
  • the drive mechanism of the screen-holder part 24 is integral with a plastic part 240 which rests on the table 6 and is driven, when the table 6 moves in translation for the printing of a cylindrical or conical object, by a stud 600 integral with the table 6 and which engages in a light 241 formed in the part 240.
  • the part 240 remains fixed, relative to the table 6 undergoing a translation and these two members will then be secured by means of pins penetrating into orifices, the means described below, which materialize an axis of rotation of the part 240 having previously been removed.
  • the part 240 must undergo a rotation about a fixed axis, the position of which must be all the closer to the part 24 as the taper of the object is more big.
  • a metal part of generally triangular shape 242 is superimposed on the part 240.
  • This part 242 is fixed, by means of a member 243 (FIG. 3) to the bar 11 and by means of a member 244 to the bar 12.
  • the table 6 therefore undergoes a translation relative to it during the printing of the conical objects.
  • the parts 240 and 242 are linked together by means of a part 245 which allows their relative rotation (axis of rotation of the part 240).
  • the point 245 remaining fixed and the axis of a stud or of a bearing 600, integral with the table 6, which moves in a light formed in the part 240, undergoing a translation, the part 240 itself undergoes a rotation around axis 245.
  • the member To adjust the position of the center of rotation, the member will be engaged in one of the orifices (not shown) formed in part 242.
  • the rest position of the pin 600 is itself adjustable, to ensure the correct rotation drive of the part 242 as a function of the position of the axis of rotation 245.
  • crank 25 linked at a point 260 to a horizontal bar 26 which slides on two guide tubes or slides 27-28 fixed, at one end, to the varre 13 and, to the 'other end, at the base 2 of the chassis.
  • the control of the crank 25 from the already mentioned motor and the synchronization of the movements of the screen (or of the squeegee) with those of the object-holder assembly, are carried out in a manner well known per se in this type of machines.
  • the object-holder assembly comprises, in addition to the bar 26, a bar 29 which also slides on the slides 27-28 and is secured to the bar 26 by columns 30-31, on which the object-holder itself is mounted 32
  • a screw 33 controlled by a thumbwheel 330 allows the object holder 32 to be adjusted in height.

Landscapes

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

Claims (2)

1. Automatische Siebdruckmaschine mit Mitteln zur synchronen Bewegungssteuerung, wie der relativen Translation der Schablone im Verhältnis zum Rakel und die gleichzeitige Absenkung des Rakels und Hebüng des Objekthalters, Maschine, in der der Mechanismus zur Auf- und Abwärtsbewegung des Rakelhalters (14) einen Elektromagneten zur Steuerung der Absenkung des Rakels enthält, sowie einen Arm (15), der, im Verhältnis zu den Translationsmitteln des Rakels, um einen festen Punkt (16) ausschwenkbar ist, gekennzeichnet durch eine Feder (18), die besagten Arm in eine Stellung zurückversetzt, die der oberen Stellung des Rakels entspricht, durch ein Organ (17), welches über besagtem Arm eine Anschlagfläche besitzt, durch Mittel (23), um auf besagte Anschlagfläche einen senkrechten Abwärtsdruck auszuüben, ein Verbindungsglied (19) mit einer Achse (190), die mit besagtem Arm fest verbunden ist und an ihrem Ende die Achse eines Rädchens (191) trägt, welches gegen besagte Anschlagfläche drückt, eine Stange (20), die mit einem Ende des besagten Verbindungsgliedes so verbunden ist, dass dieses zum Schwingen um seine Achse gebracht wird, besagten Elektromagneten (21), welcher ein bewegliches und mit dem anderen Ende der besagten Stange fest verbundenes Teil besitzt und Mittel, um den Elektromagneten während der gesamten Dauer des Druckprozesses zu erregen.
2. Machine gemäss Anspruch 1, gekennzeichnet durch Mittel (22,230) zur Regelung des Drucks der auf besagtes Organ (17) mit einer Anschlagfläche ausgeübt wird.
EP19810401997 1981-12-15 1981-12-15 Siebdruckmaschine mit einer von einem Elektromagnet betätigten Vorrichtung zum Absenken der Rakel Expired EP0081614B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19810401997 EP0081614B1 (de) 1981-12-15 1981-12-15 Siebdruckmaschine mit einer von einem Elektromagnet betätigten Vorrichtung zum Absenken der Rakel
DE8181401997T DE3174529D1 (en) 1981-12-15 1981-12-15 Automatic silk screen printing machine comprising a squeegee-lowering device actuated by an electro-magnet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19810401997 EP0081614B1 (de) 1981-12-15 1981-12-15 Siebdruckmaschine mit einer von einem Elektromagnet betätigten Vorrichtung zum Absenken der Rakel

Publications (2)

Publication Number Publication Date
EP0081614A1 EP0081614A1 (de) 1983-06-22
EP0081614B1 true EP0081614B1 (de) 1986-04-30

Family

ID=8188572

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810401997 Expired EP0081614B1 (de) 1981-12-15 1981-12-15 Siebdruckmaschine mit einer von einem Elektromagnet betätigten Vorrichtung zum Absenken der Rakel

Country Status (2)

Country Link
EP (1) EP0081614B1 (de)
DE (1) DE3174529D1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109094180A (zh) * 2018-10-15 2018-12-28 长沙远大住宅工业阜阳有限公司 丝网印刷装置及其操作方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2207351A (en) * 1938-09-27 1940-07-09 Owens Illinois Glass Co Stenciling apparatus
FR1265995A (fr) * 1960-06-01 1961-07-07 Machine à imprimer automatique au cadre
US3924529A (en) * 1971-10-13 1975-12-09 Affiliated Manufacturers Inc Torsion bar floating squeegee mount for screen printer
FR2485440A1 (fr) * 1980-06-24 1981-12-31 Tecal Sarl Machine automatique d'impression en serigraphie, comportant un mecanisme a electro-aimant pour l'abaissement de la raclette

Also Published As

Publication number Publication date
DE3174529D1 (en) 1986-06-05
EP0081614A1 (de) 1983-06-22

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