EP0391843A1 - Device for attaching a printing and/or spreading doctor - Google Patents

Device for attaching a printing and/or spreading doctor Download PDF

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Publication number
EP0391843A1
EP0391843A1 EP90810219A EP90810219A EP0391843A1 EP 0391843 A1 EP0391843 A1 EP 0391843A1 EP 90810219 A EP90810219 A EP 90810219A EP 90810219 A EP90810219 A EP 90810219A EP 0391843 A1 EP0391843 A1 EP 0391843A1
Authority
EP
European Patent Office
Prior art keywords
doctor
squeegee
printing
holder
pressure
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Withdrawn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
EP90810219A
Other languages
German (de)
French (fr)
Inventor
Jürg Holderegger
Dionizy Simson
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.)
PRSS- MASCHINEN AG
PRSS Maschinen AG
Original Assignee
PRSS- MASCHINEN AG
PRSS Maschinen AG
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 PRSS- MASCHINEN AG, PRSS Maschinen AG filed Critical PRSS- MASCHINEN AG
Publication of EP0391843A1 publication Critical patent/EP0391843A1/en
Withdrawn legal-status Critical Current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
    • B41F15/14—Details
    • B41F15/44—Squeegees or doctors
    • 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

  • the invention relates to a device for attaching a squeegee and / or a color shifter to the crossbars above the printing screen of a screen printing machine, with a cab profile extending along the spar into which the printing squeegee and / or the color shifter can be inserted transversely to the length of the spar, with retention the pressure squeegee and / or the ink shovel a pressure-tight, elastically stretchable clamping hose is inserted into a longitudinal groove running parallel to the profile cavity, which is acted upon by a pressure medium via a pressure maintaining valve and presses the pressure squeegee and / or the ink shovel against a wall of the profile cavity.
  • Such a device is known from EP-A-298 911; in this construction, the hollow profile is not rotatable relative to the cross bars of the screen printing machine; A correct "inclination" of the printing squeegee and / or the ink shovel relative to the printing screen must therefore be carried out - as was previously the case with screen printing machines - by turning the cross bar, which is rotatably mounted at its ends. Furthermore, the doctor blade or ink paddle can only be replaced in one of the end positions of the bar and requires considerable manual effort.
  • the object of the invention is therefore to improve the known construction in such a way that the setting and changing of the doctor blade and ink shovel are simplified.
  • the cabbage profile is divided into a doctor blade holder containing the profile cavity and a spar rest which are rotatably connected to one another via a cylindrical axis of rotation mounted in hollow cylindrical bearing shells.
  • the squeegee holder can be pivoted out relatively far, for example about 70 °, in the running direction of the bar and locked in this position.
  • An angle scale on one end of the squeegee holder enables every angular position to be reproduced precisely and reproducibly after a squeegee or shovel change.
  • the bearing shells are arranged on the doctor holder and the axis of rotation on the column support. Furthermore, a simple fixation of the set angle is possible if the squeegee holder has elastically deformable webs below and parallel to the bearing shells, and if the desired angular position of the spar support relative to the squeegee holder can be fixed by the pressure medium with the aid of an elastic deformation of the webs.
  • the crossbar 1 of a screen printing machine rests on a spar support 2 and is fixed with the aid of clamping jaws 3, which can be moved by a screw spindle 5 provided with a knurled knob 4, guided on two rods 17.
  • a cylindrical axis of rotation 7 is attached to the underside of the spar support 2 via a narrow connection 6; this is comprised of bearing shells 8 of a doctor holder 9, which are cut out in such a way that the doctor holder 9 in one direction - to the right in FIGS. 1 and 2 - by an angle of approximately 70 ° (FIG. 2) and in the other direction by approximately Can be swiveled out by 30 °, the larger swivel range from the vertical in the running direction of the bar and serves to replace the doctor blade or shovel, while swiveling takes place in the smaller angular range against the running direction and adjusts the angle settings of the doctor blade and shovel for the printing process.
  • the actual bearing surface of the bearing shells 8 is divided into two partial surfaces, each of which is connected to part of the boundaries of the profile cavity 10 of the doctor holder 9. Between the two partial storage surfaces there is a narrow, elastically deformable web 11 which holds the two parts of the boundaries of the profile cavity 10 together.
  • a pressure squeegee 13 and / or an ink pad 14 (FIG. 2) is mounted and held, as is described in detail in the mentioned EP-A-298 911.
  • the web 11 is simultaneously elastically deformed by the clamping hose 12, which is pressurized with a pressure medium, for example air, and which presses the pressure doctor blade 13 or the ink pad 14 against a wall of the profile cavity 10; as a result, the bearing shells 8 are pressed against the cylindrical axis of rotation 7, as a result of which the doctor holder 9 and thus the angular position of the doctor 13 or the ink pad 14 are fixed.
  • a pressure medium for example air
  • the squeegee holder 9 is pivoted into the position shown in FIG. 2, in which it can be held in place by a locking device (not shown); As can be seen from FIG. 2, in the shown position of the squeegee holder 9, it is necessary to replace the squeegee 13 or the shovel 14 manipulations can be carried out easily and without hindrance.
  • An angle scale 15 (FIG. 3) attached to an end face of the axis of rotation 7 (FIG. 3) and a corresponding mark 16 on the squeegee holder 9 make it possible, after a change of the squeegee 13 or the ink pad 14, and after releasing the mentioned locking, the previous one Angle position of squeegee 13 or shovel 14 again - or another - to readjust.

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

Abstract

The hollow profile receiving the printing doctor (13) or the spreading doctor (14) in its hollow space (10) is divided into a doctor blade holder (9) and a beam rest (2), via which the hollow profile is attached to the transverse beams (1). The doctor blade holder (9) and the beam rest (2) are connected to one another rotatably via bearing shells (8) receiving an axis of rotation (7). The new design allows adjustment of the angular position of the printing doctor (13) directly on the doctor blade holder (9) and allows simple exchange of the printing doctor (13) and/or spreading doctor (14) by swivelling the doctor blade holder (9) out over a relatively large angular range. <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung zum Befestigen einer Druckrakel und/oder einer Farbschippe am Querholmen über dem Drucksieb einer Sieb­druckmaschine, mit einem sich längs des Holmens erstreckenden Kohl pro­fil, in das die Druckrakel und/oder die Farbschippe quer zur Holmen­länge einschiebbar sind, wobei zum Festhalten der Druckrakel und/oder der Farbschippe ein druckdichter, elastisch dehnbarer Klemmschlauch in eine parallel zum Profilhohlraum verlaufende Längsnut eingelegt ist, welcher über ein Druckhalteventil mit einem Druckmedium beaufschlagt ist und die Druckrakel und/oder die Farbschippe gegen eine Wand des Profilhohlraumes presst.The invention relates to a device for attaching a squeegee and / or a color shifter to the crossbars above the printing screen of a screen printing machine, with a cab profile extending along the spar into which the printing squeegee and / or the color shifter can be inserted transversely to the length of the spar, with retention the pressure squeegee and / or the ink shovel a pressure-tight, elastically stretchable clamping hose is inserted into a longitudinal groove running parallel to the profile cavity, which is acted upon by a pressure medium via a pressure maintaining valve and presses the pressure squeegee and / or the ink shovel against a wall of the profile cavity.

Eine derartige Vorrichtung ist aus der EP-A-298 911 bekannt; bei dieser Konstruktion ist das Hohlprofil relativ zum Querholmen der Siebdruck­maschine nicht drehbar; eine korrekte "Schrägstellung" der Druckrakel und/oder der Farbschippe relativ zum Drucksieb muss daher - wie bisher bei Siebdruckmaschinen üblich - durch Drehen des an seinen Enden dreh­bar gelagerten Querholmens vorgenommen werden. Weiterhin kann ein Aus­wechseln von Rakel oder Farbschippe nur in einer der Endstellungen des Holmens erfolgen und erfordert einen erheblichen manuellen Aufwand.Such a device is known from EP-A-298 911; in this construction, the hollow profile is not rotatable relative to the cross bars of the screen printing machine; A correct "inclination" of the printing squeegee and / or the ink shovel relative to the printing screen must therefore be carried out - as was previously the case with screen printing machines - by turning the cross bar, which is rotatably mounted at its ends. Furthermore, the doctor blade or ink paddle can only be replaced in one of the end positions of the bar and requires considerable manual effort.

Aufgabe der Erfindung ist es daher, die bekannte Konstruktion so zu verbessern, dass das Einstellen und Wechseln von Druckrakel und Farb­schippe vereinfacht werden.The object of the invention is therefore to improve the known construction in such a way that the setting and changing of the doctor blade and ink shovel are simplified.

Diese Aufgabe wird mit der Erfindung dadurch gelöst, dass das Kohl pro­fil in einen den Profilhohlraum enthaltenden Rakelhalter und eine Hol­menauflage unterteilt ist, die über eine in hohlzylindrischen Lager­schalen gelagerte, zylinderische Drehachse drehbar miteinander verbun­den sind.
Zum Ein- oder Verstellen der Winkelstellung der Druckrakel oder der Farbschippe - beispielsweise in einem Winkelbereich von 30° aus der Senkrechten heraus gegen die Laufrichtung des Holmens - ist es bei der neuen Konstruktion lediglich erforderlich, den Rakelhalter relativ zur Holmenauflage in den aus Lagerschalen und Drehachse gebildeten Wälz­lagern zu drehen und in einer gewünschten Winkellage zu fixieren. Für einen Wechsel der Druckrakel oder der Farbschippe kann der Rakelhalter relativ weit, beispielsweise etwa 70°, in Laufrichtung des Holmens aus­geschwenkt und in dieser Stellung arretiert werden. Eine Winkelskala an einer Stirnseite des Rakelhalters erlaubt jede Winkelstellung nach einem Rakel- oder Schippenwechsel genau und reproduzierbar wiederher­zustellen.This object is achieved with the invention in that the cabbage profile is divided into a doctor blade holder containing the profile cavity and a spar rest which are rotatably connected to one another via a cylindrical axis of rotation mounted in hollow cylindrical bearing shells.
For setting or adjusting the angular position of the printing squeegee or the ink paddle - for example in an angular range of 30 ° from the Vertical out against the direction of travel of the bar - it is only necessary with the new design to rotate the doctor blade holder relative to the bar support in the roller bearings formed from the bearing shells and axis of rotation and to fix them in a desired angular position. To change the squeegee or the ink pad, the squeegee holder can be pivoted out relatively far, for example about 70 °, in the running direction of the bar and locked in this position. An angle scale on one end of the squeegee holder enables every angular position to be reproduced precisely and reproducibly after a squeegee or shovel change.

Als vorteilhaft hat sich erwiesen, wenn die Lagerschalen am Rakelhalter und die Drehachse an der Kolmenauflage angeordnet sind. Weiterhin ist eine einfache Fixierung des eingestellten Winkels möglich, wenn der Rakelhalter unterhalb der und parallel zu den Lagerschalen elastisch verformbare Stege aufweist, und wenn die gewünschte Winkelstellung der Holmenauflage relativ zum Rakelhalter durch das Druckmedium mit Hilfe einer elastischen Verformung der Stege fixierbar ist.It has proven to be advantageous if the bearing shells are arranged on the doctor holder and the axis of rotation on the column support. Furthermore, a simple fixation of the set angle is possible if the squeegee holder has elastically deformable webs below and parallel to the bearing shells, and if the desired angular position of the spar support relative to the squeegee holder can be fixed by the pressure medium with the aid of an elastic deformation of the webs.

Im folgenden wird die Erfindung anhand eines Ausführungsbeispiels im Zusammenhang mit der Zeichnung näher erläutert.

  • Figur 1 zeigt einen Schnitt durch das neue Hohlprofil senk­recht zur Achse des Querholmens mit einer gegen die Laufrichtung des Holmens aus der Vertikalen heraus­gedrehten Druckrakel;
  • Figur 2 gibt in gleicher Darstellung den für einen Wechsel der Rakel ausgeschwenkten Rakelhalter wieder;
  • Figur 3 schliesslich ist eine perspektivische Aufsicht auf ein Ende des an einem Querholmen befestigten Rakel­halters.
The invention is explained in more detail below using an exemplary embodiment in conjunction with the drawing.
  • Figure 1 shows a section through the new hollow profile perpendicular to the axis of the cross beam with a squeegee turned out of the vertical against the direction of travel of the beam;
  • FIG. 2 shows in the same representation the doctor holder swung out for changing the doctor blade;
  • Finally, FIG. 3 is a perspective top view of one end of the doctor holder attached to a crossbar.

Der Querholmen 1 einer nicht weiter dargestellten Siebdruckmaschine ruht auf einer Holmenauflage 2 und ist mit Hilfe von Klemmbacken 3 fix­iert, die durch eine mit einem Rändelknopf 4 versehene Schraubspindel 5, an zwei Stangen 17 geführt, bewegt werden können.The crossbar 1 of a screen printing machine, not shown rests on a spar support 2 and is fixed with the aid of clamping jaws 3, which can be moved by a screw spindle 5 provided with a knurled knob 4, guided on two rods 17.

An die Unterseite der Holmenauflage 2 ist über eine schmale Verbindung 6 eine zylindrische Drehachse 7 angesetzt; diese wird von Lagerschalen 8 eines Rakelhalters 9 umfasst, die derart ausgeschnitten sind, dass der Rakelhalter 9 in einer Richtung - in Figur 1 und 2 nach rechts - um einen Winkel von etwa 70° (Fig. 2) und in der anderen Richtung um etwa 30° ausgeschwenkt werden kann, wobei der grössere Schwenkbereich aus der Senkrechten in Laufrichtung des Holmens liegt und zum Auswechseln von Rakel oder Schippe dient, während das Schwenken in dem kleineren Winkelbereich gegen die Laufrichtung erfolgt und die Winkeleinstellun­gen von Rakel und Schippe für den Druckprozess einstellt.
Die eigentliche Lagerfläche der Lagerschalen 8 ist in zwei Teilflächen aufgeteilt, die je mit einem Teil der Begrenzungen des Profilhohlraumes 10 des Rakelhalters 9 verbunden sind. Zwischen beiden Teillagerflächen ist ein schmaler, elastisch verformbarer Steg 11 vorhanden, der die beiden Teile der Begrenzungen des Profilhohlraumes 10 zusammenhält. In dem Profilhohlraum 10, in dem ein Klemmschlauch 12 untergebracht ist, wird eine Druckrakel 13 und/oder eine Farbschippe 14 (Fig. 2) mon­tiert und gehalten, wie dies in der erwähnten EP-A-298 911 ausführlich beschrieben ist.
Durch den mit einem Druckmedium, beispielsweise Luft, beaufschlagten Klemmschlauch 12, der die Druckrakel 13 oder die Farbschippe 14 gegen eine Wand des Profilhohlraumes 10 presst, wird gleichzeitig der Steg 11 elastisch verformt; dadurch werden die Lagerschalen 8 gegen die zylin­drische Drehachse 7 gedrückt, wodurch der Rakelhalter 9 und damit die Winkelstellung der Rakel 13 oder der Farbschippe 14 fixiert werden.A cylindrical axis of rotation 7 is attached to the underside of the spar support 2 via a narrow connection 6; this is comprised of bearing shells 8 of a doctor holder 9, which are cut out in such a way that the doctor holder 9 in one direction - to the right in FIGS. 1 and 2 - by an angle of approximately 70 ° (FIG. 2) and in the other direction by approximately Can be swiveled out by 30 °, the larger swivel range from the vertical in the running direction of the bar and serves to replace the doctor blade or shovel, while swiveling takes place in the smaller angular range against the running direction and adjusts the angle settings of the doctor blade and shovel for the printing process.
The actual bearing surface of the bearing shells 8 is divided into two partial surfaces, each of which is connected to part of the boundaries of the profile cavity 10 of the doctor holder 9. Between the two partial storage surfaces there is a narrow, elastically deformable web 11 which holds the two parts of the boundaries of the profile cavity 10 together. In the profile cavity 10, in which a clamping hose 12 is accommodated, a pressure squeegee 13 and / or an ink pad 14 (FIG. 2) is mounted and held, as is described in detail in the mentioned EP-A-298 911.
The web 11 is simultaneously elastically deformed by the clamping hose 12, which is pressurized with a pressure medium, for example air, and which presses the pressure doctor blade 13 or the ink pad 14 against a wall of the profile cavity 10; as a result, the bearing shells 8 are pressed against the cylindrical axis of rotation 7, as a result of which the doctor holder 9 and thus the angular position of the doctor 13 or the ink pad 14 are fixed.

Zum Auswechseln der Druckrakel 13 oder der Farbschippe 14 wird der Rakelhalter 9 in die in Fig. 2 gezeigte Stellung ausgeschwenkt, in der er durch eine nicht gezeigte Arretierung festgehalten werden kann; wie aus Fig. 2 zu erkennen ist können in der gezeigten Stellung des Rakel­halters 9 die für ein Auswechseln von Rakel 13 oder Schippe 14 notwen­ digen Manipulationen auf einfache Weise und unbehindert durchgeführt werden.To replace the squeegee 13 or the ink pad 14, the squeegee holder 9 is pivoted into the position shown in FIG. 2, in which it can be held in place by a locking device (not shown); As can be seen from FIG. 2, in the shown position of the squeegee holder 9, it is necessary to replace the squeegee 13 or the shovel 14 manipulations can be carried out easily and without hindrance.

Durch eine an einem stirnseitigen Ende der Drehachse 7 angebrachte Win­kelskala 15 (Fig. 3) und eine entsprechende Marke 16 am Rakelhalter 9 ist es ohne Mühe möglich, nach einem Wechsel der Druckrakel 13 oder der Farbschippe 14 und nach Lösen der erwähnten Arretierung, die vorherige Winkelstellung von Rakel 13 oder Schippe 14 wieder - oder eine andere - neu einzustellen.An angle scale 15 (FIG. 3) attached to an end face of the axis of rotation 7 (FIG. 3) and a corresponding mark 16 on the squeegee holder 9 make it possible, after a change of the squeegee 13 or the ink pad 14, and after releasing the mentioned locking, the previous one Angle position of squeegee 13 or shovel 14 again - or another - to readjust.

Claims (4)

1. Vorrichtung zum Befestigen einer Druckrakel und/oder einer Farb­schippe am Querholmen über dem Drucksieb einer Siebdruckmaschine, mit einem sich längs des Holmens erstreckenden Hohlprofil, in das die Druckrakel und/oder die Farbschippe quer zur Holmenlänge ein schiebbar sind, wobei zum Festhalten der Druckrakel und/oder der Farbschippe ein druckdichter, elastisch dehnbarer Klemmschlauch in eine parallel zum Profilhohlraum verlaufende Längsnut eingelegt ist, welcher über ein Druckhalteventil mit einem Druckmedium beauf­schlagt ist und die Druckrakel und/oder die Farbschippe gegen eine Wand des Profilhohlraumes presst, dadurch gekennzeichnet, dass das Hohlprofil in einen den Profilhohlraum (10) enthaltenden Rakelhal­ter (9) und eine Holmenauflage (1) unterteilt ist, die über eine in hohlzylindrischen Lagerschalen (8) gelagerte, zylindrische Dreh­achse (7) drehbar miteinander verbunden sind.1. Device for attaching a squeegee and / or a color shovel on the crossbars above the printing screen of a screen printing machine, with a hollow profile extending along the bar, into which the printing squeegee and / or the inking shifter can be pushed transversely to the length of the bar, for holding the printing squeegee and / or the ink shovel, a pressure-tight, elastically stretchable clamping hose is inserted into a longitudinal groove running parallel to the profile cavity, which is acted upon by a pressure medium via a pressure holding valve and presses the pressure doctor blade and / or the ink shovel against a wall of the profile cavity, characterized in that Hollow profile is divided into a blade holder (9) containing the profile cavity (10) and a spar support (1), which are rotatably connected to one another via a cylindrical axis of rotation (7) mounted in hollow cylindrical bearing shells (8). 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die La­gerschalen (8) am Rakelhalter (9) und die Drehachse (7) an der Hol­menauflage (2) angeordnet sind.2. Device according to claim 1, characterized in that the bearing shells (8) on the doctor holder (9) and the axis of rotation (7) are arranged on the spar support (2). 3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass der Ra­kelhalter (9) unterhalb der und parallel zu den Lagerschalen (8) elastisch verformbare Stege (11) aufweist, die die beiden, den Pro­filhohlraum begrenzenden Seitenteile des Rakelhalters (9) verbin­den.3. Device according to claim 2, characterized in that the doctor holder (9) below and parallel to the bearing shells (8) has elastically deformable webs (11) which connect the two side parts of the doctor holder (9) delimiting the profile cavity. 4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die Winkelstellung der Holmenauflage (2) relativ zum Rakelhalter (9) in einem gegebenen Winkelbereich einstellbar und durch das Druckmedium mit Hilfe einer elastischen Verformung der Stege (11) fixierbar ist.4. The device according to claim 3, characterized in that the angular position of the spar support (2) relative to the squeegee holder (9) is adjustable in a given angular range and can be fixed by the pressure medium with the aid of an elastic deformation of the webs (11).
EP90810219A 1989-04-05 1990-03-20 Device for attaching a printing and/or spreading doctor Withdrawn EP0391843A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1269/89A CH677641A5 (en) 1989-04-05 1989-04-05
CH1269/89 1989-04-05

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EP0391843A1 true EP0391843A1 (en) 1990-10-10

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EP90810219A Withdrawn EP0391843A1 (en) 1989-04-05 1990-03-20 Device for attaching a printing and/or spreading doctor

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EP (1) EP0391843A1 (en)
JP (1) JPH02286243A (en)
CH (1) CH677641A5 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102059850A (en) * 2010-11-16 2011-05-18 汤志 Printing press scraper device
CN104669778A (en) * 2015-03-16 2015-06-03 董青山 Inflatable jaw stretching machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4566810B2 (en) * 2005-04-27 2010-10-20 ヤマハ発動機株式会社 Screen printing device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1402421A (en) * 1971-06-01 1975-08-06 Kippax Sons Ltd H G Printing apparatus
US3943849A (en) * 1973-09-13 1976-03-16 Michael Vasilantone Squeegee with sweep-movement capability
DE3614304A1 (en) * 1986-04-29 1987-11-05 Rudolf August Kuerten Method and device for aligning the squeegee in rotary screen printing
EP0298911A2 (en) * 1987-07-06 1989-01-11 Jürg Holderegger Device for attaching a printing and/or spreading doctor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1402421A (en) * 1971-06-01 1975-08-06 Kippax Sons Ltd H G Printing apparatus
US3943849A (en) * 1973-09-13 1976-03-16 Michael Vasilantone Squeegee with sweep-movement capability
DE3614304A1 (en) * 1986-04-29 1987-11-05 Rudolf August Kuerten Method and device for aligning the squeegee in rotary screen printing
EP0298911A2 (en) * 1987-07-06 1989-01-11 Jürg Holderegger Device for attaching a printing and/or spreading doctor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102059850A (en) * 2010-11-16 2011-05-18 汤志 Printing press scraper device
CN104669778A (en) * 2015-03-16 2015-06-03 董青山 Inflatable jaw stretching machine

Also Published As

Publication number Publication date
JPH02286243A (en) 1990-11-26
CH677641A5 (en) 1991-06-14

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