EP0405644A2 - Zentrumeinheit für Siebdruckmaschinen für das Mehrfarbendrucken von zylindrischen Behältern - Google Patents

Zentrumeinheit für Siebdruckmaschinen für das Mehrfarbendrucken von zylindrischen Behältern Download PDF

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Publication number
EP0405644A2
EP0405644A2 EP90201561A EP90201561A EP0405644A2 EP 0405644 A2 EP0405644 A2 EP 0405644A2 EP 90201561 A EP90201561 A EP 90201561A EP 90201561 A EP90201561 A EP 90201561A EP 0405644 A2 EP0405644 A2 EP 0405644A2
Authority
EP
European Patent Office
Prior art keywords
containers
unit
stations
mandrel
support
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.)
Granted
Application number
EP90201561A
Other languages
English (en)
French (fr)
Other versions
EP0405644A3 (en
EP0405644B1 (de
Inventor
Giovanni Maria Bortolani
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.)
TECNO 5 - A RESPONSABILITA' LIMITATA Soc
Original Assignee
TECNO 5 - A RESPONSABILITA' LIMITATA Soc
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 TECNO 5 - A RESPONSABILITA' LIMITATA Soc filed Critical TECNO 5 - A RESPONSABILITA' LIMITATA Soc
Publication of EP0405644A2 publication Critical patent/EP0405644A2/de
Publication of EP0405644A3 publication Critical patent/EP0405644A3/en
Application granted granted Critical
Publication of EP0405644B1 publication Critical patent/EP0405644B1/de
Anticipated expiration legal-status Critical
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
    • B41F15/08—Machines

Definitions

  • This invention relates to a centre unit for printing machines for multi-colour silk-screen printing on cylindrical containers in general.
  • Machines for the multi-colour silk-screen printing of such containers have been known for some time, comprising a horizontal platform with which a container loading station, at least two printing stations and a container discharge station are associated, these stations being arranged angularly equidistant along the circular path followed by the mandrels which support the containers to be printed.
  • the mandrels are provided in a number equal to the number of said stations and are arranged radially to said circular path, respective screens being associated with said at least two printing stations to slide tangentially to said circular path.
  • the mandrels consist of a plug over which the containers are tightly forced so that they are juttingly supported by the respective mandrel.
  • the object of the present invention is to associate with each individual mandrel, without creating constructional complications in the other parts of the machine, a rear support arranged to cooperate with the mandrel in supporting the containers being processed, in order to allow even relatively lengthy and/or heavy containers to be printed without their undergoing undesirable movement relative to the mandrels and consequently relative to the screens.
  • FIGS. 1 and 3 show a circular ring structure 1 of vertical axis rotated with stepwise movement in the direction A by a convenient intermittent drive unit, not shown because of usual type.
  • the printing machine is provided with six printing stations indicated overall by 2, a loading station 20 for the stations 3 and a container discharge station 21, said two loading and discharge stations being provided with convenient means for gripping the containers, such as gripper members swinging in vertical planes radial to said ring structure 1.
  • said stations are spaced angularly apart by 45° and the ring structure 1 is rotated through equal steps, a container being loaded for printing and a printed container being simultaneously discharged during the halt periods of the ring structure.
  • ring structure 1 there is a fixed ring gear 4, with eight identical radial mandrels being arranged circumferentially equidistant along the outer circumferential edge of the ring structure.
  • Each mandrel comprises a tube 5 which is fixed onto said ring structure 1, and in which a shaft 55 is rotatably mounted to project beyond the two ends of the tube 5.
  • a gear wheel 44 which engages with the ring gear 4 (see Figures 1, 3), and on the front of the shaft 55 there are fixed an interchangeable gear wheel 50 and an interchangeable plug 51.
  • This latter can be tightly forced into the mouth of the container 3, the front end part of the shaft 55 comprising a coaxial hole (not shown) to be connected to a convenient pneumatic circuit.
  • This latter which is not shown because of known type, can apply vacuum to the container 3 to pull it against the plug 51 and hence support it, and can then break the vacuum in the container 3 to allow it to be discharged.
  • the interchangeable gear wheel 50 has a pitch circle diameter equal to the outer diameter of the containers 3, and the gear wheel 44 has a pitch circle diameter equal to 1/8 of the pitch circle diameter of the ring gear 4, for obvious reasons.
  • each plug 51 there is associated an interchangeable coaxial front support 151 or centre unit, which keeps the container 3 elastically thrust against the plug 51 to thus ensure perfect horizontal positioning of the container during printing.
  • Said interchangeable support 151 which comprises a recess for receiving the base of the container 3 (see Figure 1), is mounted rotatable at the centre of a slider 6 consisting of a fork-shaped body with its concavity facing the plug 51.
  • the ends of the arms of said fork-­shaped body 6 are provided with respective sleeves 60 slidingly mounted on two cylindrical bars 61 which are parallel to each other and to the common axis of said plug 51 and support 151.
  • Each pair of bars 61 is arranged symmetrically about the corresponding tube 5, with the two bars 61 fixed to the ring structure 1 by convenient fixing devices 11.
  • a double-acting pneumatic cylinder-piston unit 7 the outward and return strokes of which are governed by an underlying pneumatic valve 70 (see Figure 2).
  • This latter is controlled by a circular cam 77 supported by a fixed element 10 of the machine ( Figure 2), the point 71 at which the cylinder-piston unit 7 is connected to the slider 6 comprising a screw clamp (see Figures 1, 2) which enables said connection point to be adjusted.
  • all the bars 61 are connected together by a stiffening polygonal frame 66.
  • Each station 2 comprises a usual screen 22 above rich there is a usual spatula 23, these being supported by respective overlying radial levers 24, These latter have their inner ends connected to respective raising/lowering devices and to respective exclusion devices (not visible), their outer ends being hinged to the top of a common column 25.
  • the inner edge of each screen 22 is slidingly supported by one of said radial levers 24, and the outer edge of the same screen 22 is hinged to a slide 26, this being slidingly mounted on a corresponding pair of superposed cylindrical bars 27.
  • a rack 28 arranged to engage with the gear wheels 50 is associated with the inner edge of each screen 22, the screen support slides 26 being connected together by a lever system indicated overall by 29.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Screen Printers (AREA)
  • Projection-Type Copiers In General (AREA)
  • Threshing Machine Elements (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Rotary Presses (AREA)
  • Ink Jet (AREA)
  • Specific Conveyance Elements (AREA)
  • Treatment Of Fiber Materials (AREA)
EP90201561A 1989-06-29 1990-06-18 Zentrumeinheit für Siebdruckmaschinen für das Mehrfarbendrucken von zylindrischen Behältern Expired - Lifetime EP0405644B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT3485889U 1989-06-29
IT8934858U IT217493Z2 (it) 1989-06-29 1989-06-29 Gruppo contropunta per macchine perla stampa serigrafica policroma di contenitori cilindrici in genere

Publications (3)

Publication Number Publication Date
EP0405644A2 true EP0405644A2 (de) 1991-01-02
EP0405644A3 EP0405644A3 (en) 1991-07-17
EP0405644B1 EP0405644B1 (de) 1995-05-24

Family

ID=11240431

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90201561A Expired - Lifetime EP0405644B1 (de) 1989-06-29 1990-06-18 Zentrumeinheit für Siebdruckmaschinen für das Mehrfarbendrucken von zylindrischen Behältern

Country Status (6)

Country Link
EP (1) EP0405644B1 (de)
AT (1) ATE122964T1 (de)
DE (1) DE69019605T2 (de)
DK (1) DK0405644T3 (de)
ES (1) ES2073510T3 (de)
IT (1) IT217493Z2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109291624A (zh) * 2018-09-03 2019-02-01 深圳市金海来自动化机械有限公司 一种全自动镜片丝印机及方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3190463A (en) * 1963-11-26 1965-06-22 American Production Machine Co Work advancing and rotating apparatus
US3338574A (en) * 1964-11-27 1967-08-29 Strutz & Co Inc Carl Workpiece carrier assembly for decorating apparatus
IT1216379B (it) * 1986-10-31 1990-02-22 Cerve Spa Macchina per la stampa serigrafica a piu' colori di contenitori cilindrici in genere

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109291624A (zh) * 2018-09-03 2019-02-01 深圳市金海来自动化机械有限公司 一种全自动镜片丝印机及方法

Also Published As

Publication number Publication date
DK0405644T3 (da) 1995-08-14
IT8934858V0 (it) 1989-06-29
EP0405644A3 (en) 1991-07-17
ATE122964T1 (de) 1995-06-15
EP0405644B1 (de) 1995-05-24
DE69019605T2 (de) 1995-09-28
ES2073510T3 (es) 1995-08-16
IT217493Z2 (it) 1991-12-13
DE69019605D1 (de) 1995-06-29

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