US3557690A - Rotary screen printing machine equipped with improved squeegee system or the like - Google Patents

Rotary screen printing machine equipped with improved squeegee system or the like Download PDF

Info

Publication number
US3557690A
US3557690A US761773A US3557690DA US3557690A US 3557690 A US3557690 A US 3557690A US 761773 A US761773 A US 761773A US 3557690D A US3557690D A US 3557690DA US 3557690 A US3557690 A US 3557690A
Authority
US
United States
Prior art keywords
squeegee
printing
screen
tube
squeegee system
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 - Lifetime
Application number
US761773A
Other languages
English (en)
Inventor
Heinrich Voegelin
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.)
Fritz Buser AG Maschinenfabrik
Original Assignee
Fritz Buser AG Maschinenfabrik
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
Priority claimed from CH1340467A external-priority patent/CH463443A/de
Application filed by Fritz Buser AG Maschinenfabrik filed Critical Fritz Buser AG Maschinenfabrik
Application granted granted Critical
Publication of US3557690A publication Critical patent/US3557690A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B41F15/46—Squeegees or doctors with two or more operative parts

Definitions

  • Kleeman ABSTRACT There is disclosed an improved rotary screen printing machine incorporating individual printing stations equipped with a substantially circular printing screen beneath which passes the backing cloth or printers blanket supporting the material which is to be printed.
  • a squeegee system or the like is inserted in the circular printing screen.
  • the squeegee system which is mounted at both sides of the circular printing screen at the machine frame is constructed to be pivotable.
  • Rotary screen printing techniques constitute a continuous printing method in which the material. is printed upon by means of circular printing screens or the like.
  • the printing ink or dye is delivered into the interior of the circular printing screen and escapes through the fine perforated screen material.
  • rotary screen printing machines permit of a continuous operation, still it is impossible to prevent interruptions in the working cycle.
  • the printing ink Upon stopping the printing operation, whether it be because of changing the printing ink or for any other reasons, the printing ink immediately passes through the perforations of the circular printing screen and soils the fabric or material to be printed or at the very least the backing cloth or printcrs blanket. Furthermore, during longer down times of the machine the danger exists that the ink will, apart from soiling the printer's blanket, also contaminate further components of the machine.
  • a more specific object of the present invention relates to an improved rotary screen printing machine wherein the squeegee system or the like is constructed in such a manner that during nonuse of the machine, it is possible to prevent contamination of the material being printed, the printers blanket and other parts of the machine by the printing ink.
  • Still a further significant object of the present invention relates to an improved rotary screen printing machine which is relatively simple in construction, extremely reliable in operation, requires a minimum of servicing and maintenance, and effectively prevents improper contact of the printing ink with the material being printed or other components of the machine.
  • Another, more specific object of the present invention relatcs to an improved rotary screen printing machine provided with means which insure that the printing ink is returned to a location where it cannot unintentionally come into contact with the material upon which the printing operation is carried out during such time as the machine is brought to a standstill
  • the invention contemplates constructing the squeegee system which is mounted at both sides of the circolor printing screen at the machine frame so as to be pivotable.
  • FIG. I is a schematic sectional view through a circular printing screen equipped with an inserted squeegee system and shown in its printing position;
  • FIG. 2 is a sectional view through the circular printing screen with inserted squeegee system, corresponding to the arrangement of FIG. 1, but depicting the printing screen and the associated squeegee system in a rest position;
  • FIG. 4 is a front view showing detailsof the support or mounting for the squeegee system as viewed from the nonserviced side of the machine, that is to say, at the side where the ink is introduced;
  • FIG. 6 is a fragmentary view showing a detail of the squeegee support tube.
  • reference numeral 1 designates the substantially circular printing screen which is constructed as a fine-perforated thinwall hollow cylinder member.
  • This circular printing screen I is rotatably mounted in suitable fashion at both sides of the nonillustrated machine frame.
  • the circular printing screen 1 is appropriately driven in synchronism with the backing cloth or printer's blanket 2.
  • the material or fabric 3 which is to be printed is carried on the printers blanket 2 and this material is suitably fixed thereon.
  • the printer's blanket 2 is prestressed or tensioned in an appropriate way and forms a smooth printing support.
  • a conventional nonillustrated counterpressure roller is advantageously arranged beneath each circular printing screen 1, but has been omitted to preserve clarity in illustration.
  • This squeegee system 20 or equivalent structure serves for the introduction of the printing ink or dye to the inner jacket surface of the printing screen 1 and also provides for a proper dosage of such printing ink.
  • the squeegee system 20 embodies a de1ivery-or squeegee tube 4 which serves as a squeegee support and carries the squeegee 5 as well as the flow control squeegee 6.
  • the squeegee system 20 is rotatably mounted at both sides of the circular printing screen 1 externally at the machine frame in a manner which will be explained more fully hereinafter. As already alluded to above, this squeegee system 20 is disposed within the circular printing screen 1 and also passes through the support means for the circular printing screen.
  • the rotational support for the squeegee system is brought about through the provision of two segments 9 arranged at both sides of the machine frame, and between which the squeegee system 20 is arranged. These segments 9 are rotatably secured at the pivot points 10 at the machine frame.
  • a slit II is provided at each segment 9 which renders possible the raising and lowering of the squeegee system, in order to thereby accommodate the squeegee 5 to the diameter of the printing screen 1, to adjust for the desired squeegee pressure and to be able to compensate for any wear of the squeegee.
  • the rotatable attachment arrangement for the squeegee system functions in the following manner:
  • the described apparatus is rotated in the direction of the arrow 12 about the point of rotation 10 which is disposed or located at the middle or central region of the circular printing machine, until it assumes the rest position shown in FIG. 2.
  • the printing ink located within the circular printing screen I flows along the flow control squeegee 6 downwards and is caught by the catch nose '7.
  • the printing ink flows through the bore means 8 back into the squeegee tube t.
  • the described apparatus is rotated further in the direction of the arrow 15 and brought into the printing position.
  • the transition from the printing position to the rest position can advantageously be undertaken by means of a suitable drive motor, and specifically in such a fashion that upon actuation of this motor the squeegee system is rotated into the rest position and retained at such location, whereas upon further actuation of the drive motor the squeegee system is brought from the rest position into the printing positionand retained in the latter location.
  • FIGS. 3 to 6 illustrate a particularly advantageous solution for the pivotal mounting of the squeegee system.
  • reference numerals 101 and 102 designate the support means which are carried at both sides of the nonillustrated machine frame.
  • the circular printing screen which is not visible in these figures, is rotatably mounted in such support means 101, 102.
  • the circular printing screen is secured to the sup port or bearing body member 103 sewing for the mounting of the printing screen, and, if desired, such printing screen can be secured to this bearing body member 103 through the intermediary of elastically flexible intermediate body means, in a manner not shown in greater detail herein since it is not neces- V sary for the understanding of the inventive concepts
  • the support or bearing body 103 is mounted in bearing means 104, 105, and driven via a gear 106.
  • a number of segments 107 are secured to the support 101 with the help of screws 108 or equivalent fastening expedients. These segments 107 provide a support arrangement for a ring member 109 carrying the squeegee system or unit. This ring member 109 is rotatably mounted in the support segments 107.
  • a further ring member 110 is mounted in exactly the same manner.
  • At least one of both rings 109, 110 possesses an externally toothed portion 111, in this case shown provided at ring 109, which toothed portion 111 meshes with the teeth of a counter gear 112.
  • a suitable time mover or power source schematically indicated by refefence numeral 200, serves to drive the ring 11 1 by means of the'gear 112.
  • the prime mover 200 can" advantageously be a hydraulic motor which, for instance, receives its pressurized medium from the pressurizedmedium network already available at the machine and required for the lowering of the printing components.
  • the ring members 109 and 110 carry lever members 113 and 114, respectively, which are, in turn, pivotally mounted at the pivot pins 115 and 116, respectively, arranged at the aforesaid ring members 109 and 110.
  • Suitable adjustment means 117 and 118 are provided at the respective free ends of the respective lever members 113 and 114.
  • Each of these adjustment means 117 and 110 is composed of a manually operable spindle-stroke adjustment mechanism 117a and 110a respectively,
  • stroke adjustment mechanisms 1l7aand 118a of the adjustment means 117 and 118 respectively are hingedly connected by means of bolts 119 and 120, respectively, to the associated levers 113 and 114 and serve for adjusting the position of such associated lever with respect to the associated ring member v109 and 110.
  • a stop member 121 and 122 is arranged at the respective ring members 109 and 110. In the working position of the squeegee system these stops 121 and 122 bear against adjustable stop members 123 and 124, respectively, and in the rest position of the squeegee system, such stops 121 and 122 bear against stationary arranged stop means 125 and 126, respectively,arranged at the support members 101 and 102 respectively.
  • the bore 130 possesses sufficien t play so that the squeegee support tube 127 can be introduced at an inclination from the ink delivery side until the pin member 131 is disposed in the slot or groove 132, whereby entrainment of the squeegee system is insured.
  • the mounting of the squeegee support or mounting tube 127 at the ink delivery side deviates from the mounting arrangement provided at the servicing side of the machine. More precisely, by referring to F161 4 it will be recognized that two rectangular blocks135 and 136 are fixedly clamped with the tube portion 128 by means of two screws for instance or equivalent fastening devices. One of these two blocks, such as the block 136 is somewhat larger than the other and fits into a suitable recess 137 provided at the lever'member 113 and is engaged by two cams or dogs 138 and 139, as shown. Consequently, the squeegee support or mounting tube 127 can only be axially removed or withdrawn.
  • the removal of the squeegee support tube and the squeegee system initially occurs through axial displacement of the tube 127 until the blocks 135 and 136 are pushed out of the support or recess 137 of the lever 113. Thereafter, the squeegee system can be lifted and moved out of the opening provided at the ring member 109. The remounting of the squeegee unit is undertaken in thesame way but with a reverse sequence of steps.
  • the squeegee system is introduced at an inclination into the bore 130, prior to reaching the support 137 is lowered by means of the blocks 135 and 136 into the horizontal position and the terminal position is reached by carrying out axial displacement, so that the pin 131 again engages in the slot 132 and the bloel 136 engageswith the support or recess 137 of the lever 113.'ln order to fix the position of the squeegee system there is advantageously provided a spring loaded stop arrangement 140 which prevents an axial displacement of the squeegee system during operation.
  • a further adjustment possibility for the squeegee is provided by virtueof the spindle-stroke adjustment mechanisms 117a and 1184 of the adjustment devices 117 and 118 respectively.
  • this adjustment feature it is possible to adju'st the squeegee considerably in the radial direction. Consequently, the squeegee pressure can be regulated and any wear of the squeegee itself can be compensated quite easily.
  • the possibility of being able to pivot or rock the squeegee within a predetermined angular range provides the advantage of enabling a simplification of the construction of the squeegee support profile 143, which in its basic structure consists of three ribs or webs 143a and is secured in suitable fashion to the squeegee tube 127; As best shown by referring to FIG. 5, two of these ribs 143a serve for fixedly clamping the squeegee 142, whereas the third rib or web forms together with both of the clamping ribs for the squeegee 142 a trough 143b when the squeegee system is rocked into the rest position.
  • the ink accumulations or clots can flow into this trough 143b and from this location the ink can flow through bore means 144 back into the squeegee tube or pipel29.
  • the normally employed flow control squeegee can be omitted since, due to the possibility of adjusting the squeegee 142 either opposite or in the direction of travel A of the material to be printed the printing operation, especially as concerns the dosing of the quantity of printing ink, can be int'luenced in the same manner as is possible with a flow control squeegee of the type previously considered inconjunction with FIGS. 1 and 2.
  • said squeegee system comprises a squeegee tube, a squeegee support profile member having three webs secured to said squeegee tube, two of said webs being adapted to fixedly clamp a squeegee therebetween, and the third of said webs cooperating with said squeegee clamping webs to form a trough for receiving the printing ink when the squeegee system assumes a rest position, and bore means communicating said trough with said squeggee tube in order to permit the printing mk to pass via sai bore means back into said squeegee tube.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Screen Printers (AREA)
US761773A 1967-09-26 1968-09-23 Rotary screen printing machine equipped with improved squeegee system or the like Expired - Lifetime US3557690A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1340467A CH463443A (de) 1967-09-26 1967-09-26 Rotationsfilmdruckmaschine
CH1250068A CH480177A (de) 1967-09-26 1968-08-20 Rotationsfilmdruckmaschine

Publications (1)

Publication Number Publication Date
US3557690A true US3557690A (en) 1971-01-26

Family

ID=25710395

Family Applications (1)

Application Number Title Priority Date Filing Date
US761773A Expired - Lifetime US3557690A (en) 1967-09-26 1968-09-23 Rotary screen printing machine equipped with improved squeegee system or the like

Country Status (11)

Country Link
US (1) US3557690A (fr)
JP (1) JPS4818886B1 (fr)
BE (1) BE721268A (fr)
CH (1) CH480177A (fr)
DE (1) DE1785299C3 (fr)
ES (1) ES358082A1 (fr)
FR (1) FR1580792A (fr)
GB (1) GB1206519A (fr)
NL (1) NL149432B (fr)
OA (1) OA02975A (fr)
SE (1) SE348407B (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3796153A (en) * 1972-02-25 1974-03-12 Precision Screen Machines Squeegee assembly with last motion flood roller mount
US3960076A (en) * 1973-02-27 1976-06-01 Fritz Buser Ag Maschinenfabrik Rotary screen printing machine with angle and pressure adjustable squeegee
US4436032A (en) 1981-01-21 1984-03-13 Saueressig Gmbh Rotary screen printing apparatus
US6703118B2 (en) * 1999-10-18 2004-03-09 Stork Screens B.V. Printing form for rotary screen printing made from fiber-reinforced plastics material
US20050000374A1 (en) * 2002-02-22 2005-01-06 Minami Co., Ltd. Screen printing apparatus
US20130228083A1 (en) * 2012-03-02 2013-09-05 Sung An Machinery Co., Ltd. Roll-to-roll printing apparatus
US20140020577A1 (en) * 2012-07-23 2014-01-23 Komori Corporation Liquid supply apparatus
US20150040780A1 (en) * 2013-08-06 2015-02-12 Komori Corporation Rotary screen printing press
CN104441938A (zh) * 2013-09-13 2015-03-25 小森公司 旋转丝网印刷装置
CN113386483A (zh) * 2021-06-04 2021-09-14 唐清华 降低图案印刷误差的丝印方法、丝印刮板以及丝印设备

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10319773B4 (de) * 2003-05-02 2006-04-20 Koenig & Bauer Ag Siebdruckzylinder
CN103287077A (zh) * 2013-07-08 2013-09-11 昆山欧莱特印刷机械工业有限公司 一种网印机高效油墨刮刀装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1480348A (en) * 1922-12-05 1924-01-08 Cadgene Ernest Fabric-printing machine
DE611872C (de) * 1933-09-21 1935-04-08 Willi Scholz Fluessigkeitsvorratsbehaelter fuer den Anfeuchter eines Rotationsspiegelschriftvervielfaeltigers
GB493150A (en) * 1937-04-06 1938-10-04 John Isaac Burton Read Improvements in manifolding apparatus
GB513905A (en) * 1938-02-23 1939-10-25 Roneo Ltd Improvements in inking mechanism for rotary duplicating and the like printing machines
US2445666A (en) * 1945-05-04 1948-07-20 Ellam Frederick Inking device for rotary duplicating machines
US2928340A (en) * 1957-03-21 1960-03-15 Stein Textile printing machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1480348A (en) * 1922-12-05 1924-01-08 Cadgene Ernest Fabric-printing machine
DE611872C (de) * 1933-09-21 1935-04-08 Willi Scholz Fluessigkeitsvorratsbehaelter fuer den Anfeuchter eines Rotationsspiegelschriftvervielfaeltigers
GB493150A (en) * 1937-04-06 1938-10-04 John Isaac Burton Read Improvements in manifolding apparatus
GB513905A (en) * 1938-02-23 1939-10-25 Roneo Ltd Improvements in inking mechanism for rotary duplicating and the like printing machines
US2445666A (en) * 1945-05-04 1948-07-20 Ellam Frederick Inking device for rotary duplicating machines
US2928340A (en) * 1957-03-21 1960-03-15 Stein Textile printing machine

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3796153A (en) * 1972-02-25 1974-03-12 Precision Screen Machines Squeegee assembly with last motion flood roller mount
US3960076A (en) * 1973-02-27 1976-06-01 Fritz Buser Ag Maschinenfabrik Rotary screen printing machine with angle and pressure adjustable squeegee
US4436032A (en) 1981-01-21 1984-03-13 Saueressig Gmbh Rotary screen printing apparatus
US6703118B2 (en) * 1999-10-18 2004-03-09 Stork Screens B.V. Printing form for rotary screen printing made from fiber-reinforced plastics material
US20050000374A1 (en) * 2002-02-22 2005-01-06 Minami Co., Ltd. Screen printing apparatus
US7134389B2 (en) * 2002-02-22 2006-11-14 Minami Co., Ltd. Screen printing apparatus
US8820231B2 (en) * 2012-03-02 2014-09-02 Sung An Machinery Co., Ltd. Roll-to-roll printing apparatus
US20130228083A1 (en) * 2012-03-02 2013-09-05 Sung An Machinery Co., Ltd. Roll-to-roll printing apparatus
US20140020577A1 (en) * 2012-07-23 2014-01-23 Komori Corporation Liquid supply apparatus
US20150040780A1 (en) * 2013-08-06 2015-02-12 Komori Corporation Rotary screen printing press
US9327491B2 (en) * 2013-08-06 2016-05-03 Komori Corporation Rotary screen printing press
EP3132935A3 (fr) * 2013-08-06 2017-03-29 Komori Corporation Presse à imprimer à écran rotatif
CN104441938A (zh) * 2013-09-13 2015-03-25 小森公司 旋转丝网印刷装置
EP2848406A3 (fr) * 2013-09-13 2015-03-25 Komori Corporation Presse rotative d'impression sérigraphique
US9579881B2 (en) 2013-09-13 2017-02-28 Komori Corporation Rotary screen printing press
CN104441938B (zh) * 2013-09-13 2019-05-10 小森公司 旋转丝网印刷装置
CN113386483A (zh) * 2021-06-04 2021-09-14 唐清华 降低图案印刷误差的丝印方法、丝印刮板以及丝印设备

Also Published As

Publication number Publication date
NL6813734A (fr) 1969-03-28
OA02975A (fr) 1970-12-15
GB1206519A (en) 1970-09-23
SE348407B (fr) 1972-09-04
BE721268A (fr) 1969-03-03
ES358082A1 (es) 1970-06-01
DE1785299C3 (de) 1974-05-30
JPS4818886B1 (fr) 1973-06-09
DE1785299A1 (de) 1972-02-10
FR1580792A (fr) 1969-09-05
DE1785299B2 (de) 1973-11-08
NL149432B (nl) 1976-05-17
CH480177A (de) 1969-10-31

Similar Documents

Publication Publication Date Title
US3557690A (en) Rotary screen printing machine equipped with improved squeegee system or the like
US3427964A (en) Stencil printing machine
US3889596A (en) Printing unit for selective indirect intaglio and flexographic printing
JP2550047B2 (ja) 加刷装置
US4103615A (en) Vertical rotary screen printing machine and ink supply therefore
US3718086A (en) Screen printing machine with adjustable bridge
US2278138A (en) Rotary intaglio printing press
US3960076A (en) Rotary screen printing machine with angle and pressure adjustable squeegee
US3739717A (en) Wire printing apparatus having closed inking system
GB2192835A (en) Moistening mechanism for an offset printing machine
US3934502A (en) Adjustable rotary screen printer with air-biased squeegees
JP2574330Y2 (ja) オフセット印刷機用の湿し装置
US3491686A (en) Mounting apparatus for ink form rollers
US4040347A (en) Inking arrangement for printing machine
US4150621A (en) Printing press having plurality of separable inking mechanisms
US3990363A (en) Method and device for printing a web or a rectangular piece of material
US5090314A (en) Inking and dampening mechanism for a reversible printing unit of a rotary offset printing press
US3456584A (en) Cylinder adjusting means in rotary screen printing machine
US4530284A (en) Rotary printing machine with liquid supply apparatus comprising an endless band
US4917012A (en) Inking device for printing press and an inking dosing member construction
EP0311217B1 (fr) Machine à imprimer au pochoir rotatif à plusieurs couleurs
US2231109A (en) Polygraphing machine
US3424084A (en) Wet-offset rotary presses
US3965819A (en) Ink ductor system
US3915088A (en) Silk screen printing machine having variable printing length