US3881413A - Pivoting rotary screen end ring mount - Google Patents

Pivoting rotary screen end ring mount Download PDF

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Publication number
US3881413A
US3881413A US413991A US41399173A US3881413A US 3881413 A US3881413 A US 3881413A US 413991 A US413991 A US 413991A US 41399173 A US41399173 A US 41399173A US 3881413 A US3881413 A US 3881413A
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US
United States
Prior art keywords
ring
pivot
combination
printing screen
mounting
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
US413991A
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English (en)
Inventor
Mathias Mitter
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.)
Mitter and Co
Original Assignee
Mitter and Co
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Filing date
Publication date
Application filed by Mitter and Co filed Critical Mitter and Co
Application granted granted Critical
Publication of US3881413A publication Critical patent/US3881413A/en
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Expired - Lifetime 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
    • B41F15/34—Screens, Frames; Holders therefor
    • B41F15/38—Screens, Frames; Holders therefor curved

Definitions

  • a tubular printing Screen has spaced axial ends each of which is provided with a mounting ring.
  • a support [52] US. Cl 101/127.1; 101/128.1 is provided adjacent each of these ends and carries a [51] 111- CI.
  • Screen printing machines of various types are known. These include a type wherein the printing screen is in form of a tubular construction, that is essentially a drum the opposite axial ends of which are provided with mounting rings which are fixed to the tubular printing screen. It is known to provide supports adjacent the opposite axial ends of the tubular printing screen, and to provide journal rings on these supports, each journal ring being connected with one of the mounting rings. The arrangement according to the prior art is such that each journal ring is arranged concentrically with reference to the associated mounting ring.
  • An additional object of the invention is to provide such an arrangement wherein the tubular printing screen is so mounted that to all intents and purposes it will adjust and accommodate itself to changes which occur in operation of the apparatus.
  • one feature of the invention resides, in a screen printing machine, in a combination which comprises a tubular printing screen having spaced axial ends.
  • a support is provided adjacent each of these ends, and a pair of mounting rings is provided, each being fixed to one of the axial ends.
  • a pair of journal ring units is also provided, each of these being turnably mounted on one of the supports.
  • a pair of pivot joints is provided, of which each connects one of the mounting rings with the respectively associated journal ring unit.
  • the axes about which the pivot joints at the opposite axial ends of the printing screen can pivot should advantageously extend normal to one another so that in effect together they constitute a single universal joint, i.e., a multidirectiona] pivot mount, which assures that the printing screen will always be free of tensions because automatic compensation of the tensions will take place.
  • the latter can continuously adjust itself to differing conditions, so that no danger of damage or destruction of the printing screen exists, and all those disadvantages are eliminated which result from the development of stresses in the printing screen.
  • the supports are adjustable in all possible direction, in a manner already well known from the art, because this makes possible an initial exact setting of the printing screen by means of displacement of the supports, so that the arrangement according to the present invention need provide for automatic compensation of only those difficulties which arise when deviations occur from the initial setting during the operation of the machine.
  • FIG. 1 is a perspective view, showing one end of a printing screen with a pivot joint thereon;
  • FIG. 2 shows the arrangement of FIG. 1, but with the components of the pivot joint not yet assembled
  • FIG. 3 is a somewhat diagrammatic view, illustrating the tubular printing screen, the supports at the opposite ends of the same, and the pivot joints connecting the opposite axial ends of the printing screen to the supports.
  • FIG. 3 provides an overview of a tubular printing screen which is mounted in accordance with the present invention
  • FIGS. 1 and 2 show details of a pivot joint provided at one axial end of the tubular printing screen
  • FIG. 3 shows that the tubular printing screen 1 is mounted in supports S which are located adjacent the opposite axial ends of the printing screen.
  • the supports S have been omitted in the illustration of FIGS. 1 and 2, as has been one end of the tubular printing screen since the illustration of the pivot joint adjacent the illustrated end in FIGS. 1 and 2 is sufficient for an understanding of the invention, the opposite pivot joint being identical with the one illustrated, with the only difference that the pivot axis about which the joint can pivot extends normal to the pivot axis of the joint which is illustrated in FIGS. 1 and 2, thus the joints together form a multidirectional pivot mount for the screen.
  • the supports S carry the journal ring units 2 which are so mounted that they permit rotation and also an axial tensioning of the tubular printing screen.
  • the supports S can be appropriately adjusted in accordance with the prior art, that is they can be moved axially and radially of the printing screen and can be arrested in desired positions by means and devices known per se.
  • the main adjustment of the tubular printing screen 1 is carried out by means of this displacement of the supports S.
  • Each of the opposite axial ends of the printing screen 1 is provided with a mounting ring 3 which is fixedly connected with the printing screen.
  • the use of such mounting rings is already known per se.
  • the mounting rings 3 illustrated in particular in FIGS. 1 and 2 are provided at two diametrically opposite locations with lugs or projections 30 which are formed with registering openings.
  • Each of the units 2 is in turn provided with a retaining ring 4 which is rotatably journalled in the respective unit 2 and is itself provided at two diametrically opposite locations with two further lugs or projections 4 which also have registering openings.
  • the cooperating rings 3 and 4 are so positioned that each of the lugs 30 is located in overlapping relationship with one of the lugs 40 so that the openings in them register with one another. This is the position which is shown in FIG. 1 and to which the lugs are moved during assembly.
  • FIG. 2 shows the rings 3 and 4 in a position just prior to assembly, and it will be appreciated that either the ring 3 or the ring 4 or both of them will have to be turned until their lugs 30 and 40 overlap in the position shown in FIG. 1. Screws, bolts or other pivots 5 are then inserted through the registering openings of the lugs 30, 40 and the two screws, etc., 5 (only one shown) define with one another a pivot axis for the respective pivot joint.
  • This pivot axis extends at one axial end of the printing screen 2 in one orientation, for instance horizontally, and at the pivot joint at the opposite axial end the pivot axis of that pivot joint may extend in direction normal to the pivot axis of the first-mentioned joint, so that if the pivot axis of the first-mentioned joint has a horizontal orientation the one at the opposite axial end may have a vertical orientation.
  • the two joints together thus form, in effect, a univeral joint.
  • the arrangement of the lugs 30 and 40 in the manner illustrated makes possible not only a simple connection between the rings 3 and 4, but also a similarly simple disengagement. It is merely necessary to remove the elements 5 and to turn the tubular printing screen 1 in the direction of the arrow A shown in FIG. 2, which, of course, causes a similar turning of the ring 3 which is fixedly connected with the screen 1, so that the lugs 30 and 40 are no longer in overlapping relationship. Now, the printing screen 1 with the rings 3 provided at its opposite axial ends can readily be lifted out from between the rings 4 at its opposite axial ends, in the direction of the arrow B shown in FIG. 2. Evidently, if the screen 1 is turned to a position in which the lugs 30 and 40 assume a different relationship from that shown in FIG. 2 relative to one another, the screen 1 will be lifted out from between the rings 4 in a direction other than that indicated by the arrow B.
  • the central concept of the present invention is to provide the pivot joints at the opposite axial ends of the tubular printing screen 1, in such a manner that together they form, in effect, a universal joint. This can be achieved in a particularly simple and effective manner with the arrangement illustrated in the drawing. It should be understood, however, that other ways exist and are conceivable for obtaining the same effect, and they are quite evidently intended to be included within the concept of the present invention.
  • a combination comprising a tubular printing screen having spaced axial ends; a support adjacent each of said ends; a pair of mounting rings each fixed to one of said axial ends; a pair of journal ring units each fixedly mounted on one of said supports; and two pivot joints each connecting one of said mounting rings with a respectively associated journal ring unit, said pivot joints together forming a multi-directional pivot mount which allows said tubular printing screen to yield in response to fluctuations in the spacing which exists between said tubular printing screen and material which is being printed upon.
  • each of said journal ring units includes a retaining ring; and wherein said pivot joints include a pair of diametrically opposite first lug portions projecting axially from the respective mounting ring toward the associated ring unit, a pair of diametrically opposite second lug portions projecting axially from the respective ring unit toward the associated mounting ring and each overlapping one of said first lug portions, and pivot means connecting each first lug portion with the respectively overlapping second lug portion.
  • pivot means comprises bolts, and wherein the bolts connecting the first lug portions of each mounting ring with the second lug portions of an associated retaining ring are coaxial with one another.
  • each of said pivot joints permits relative pivoting of said mounting rings with reference to the respectively associated ring unit about a pivot axis; and wherein the 6 mounting ring has an axial end face facing but axially spaced from a similar axial end face of the associated retaining ring.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Screen Printers (AREA)
US413991A 1972-11-09 1973-11-08 Pivoting rotary screen end ring mount Expired - Lifetime US3881413A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2254819A DE2254819C2 (de) 1972-11-09 1972-11-09 Zylinderschablone für ein Druckwerk einer Siebdruckmaschine

Publications (1)

Publication Number Publication Date
US3881413A true US3881413A (en) 1975-05-06

Family

ID=5861228

Family Applications (1)

Application Number Title Priority Date Filing Date
US413991A Expired - Lifetime US3881413A (en) 1972-11-09 1973-11-08 Pivoting rotary screen end ring mount

Country Status (5)

Country Link
US (1) US3881413A (da)
AT (1) AT337213B (da)
CH (1) CH559630A5 (da)
DE (1) DE2254819C2 (da)
NL (1) NL7315296A (da)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3971313A (en) * 1973-01-29 1976-07-27 Fritz Buser Ag Maschinenfabrik Attaching printing stencils to rotary screen printing presses
US4475455A (en) * 1979-09-06 1984-10-09 Mathias Mitter Tubular stencil unit for screen printing
US20110174173A1 (en) * 2010-01-18 2011-07-21 Stork Prints America, Inc. Split end ring for rotary printing screen and method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT395694B (de) * 1991-09-17 1993-02-25 Zimmer Maschinenbau Gmbh Schablonenaufnahme fuer rundschablonen
CN111688338A (zh) * 2020-04-03 2020-09-22 绍兴永通印花有限公司 异花同步双幅印花机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1330793A (en) * 1916-04-04 1920-02-17 Gustav A Friess Cylinder-adjusting mechanism for printing-presses
US2711935A (en) * 1951-03-20 1955-06-28 Strachan & Henshaw Ltd Means for adjusting the position of a shaft and for indicating the extent of said adjustment
US2762295A (en) * 1950-11-01 1956-09-11 Carding Spec Canada Distribution of pressure between a pair of pressure rollers
US3675571A (en) * 1969-07-09 1972-07-11 Stork Amsterdam Screen printing machine for printing in multicolor a horizontally advanced web
US3718086A (en) * 1969-07-09 1973-02-27 Stork Amsterdam Screen printing machine with adjustable bridge

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1990326U (de) * 1968-08-01 Peter Zimmer, Kufstein/AT Zylinderschablone

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1330793A (en) * 1916-04-04 1920-02-17 Gustav A Friess Cylinder-adjusting mechanism for printing-presses
US2762295A (en) * 1950-11-01 1956-09-11 Carding Spec Canada Distribution of pressure between a pair of pressure rollers
US2711935A (en) * 1951-03-20 1955-06-28 Strachan & Henshaw Ltd Means for adjusting the position of a shaft and for indicating the extent of said adjustment
US3675571A (en) * 1969-07-09 1972-07-11 Stork Amsterdam Screen printing machine for printing in multicolor a horizontally advanced web
US3718086A (en) * 1969-07-09 1973-02-27 Stork Amsterdam Screen printing machine with adjustable bridge

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3971313A (en) * 1973-01-29 1976-07-27 Fritz Buser Ag Maschinenfabrik Attaching printing stencils to rotary screen printing presses
US4475455A (en) * 1979-09-06 1984-10-09 Mathias Mitter Tubular stencil unit for screen printing
US20110174173A1 (en) * 2010-01-18 2011-07-21 Stork Prints America, Inc. Split end ring for rotary printing screen and method
CN102179997A (zh) * 2010-01-18 2011-09-14 史托克印刷美国公司 用于旋转印刷丝网的分端环和方法

Also Published As

Publication number Publication date
CH559630A5 (da) 1975-03-14
DE2254819A1 (de) 1974-05-16
NL7315296A (da) 1974-05-13
ATA876773A (de) 1976-10-15
AT337213B (de) 1977-06-27
DE2254819C2 (de) 1982-11-11

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