Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41F—PRINTING MACHINES OR PRESSES
  • B41F17/00—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for
  • B41F17/001—Pad printing apparatus or machines

Definitions

• the invention relates to an inking and doctoring device for pad printing machines according to the preamble of claim 1.
• DE-GM 88 08 059 In conventional devices of the type mentioned, such. B. are described in DE-GM 88 08 059, the hollow body is cuboid and its chambers are integrated constituent l of the hollow body. If the walls used as squeegees are worn out so that the cliché cannot be properly squeegeeed off, the body must be replaced entirely. Alternatively, you can regrind the edges of the walls. Both options are costly and / or time consuming.
• Another device is described in DE-GM 8809 564. In this device, a bottomless hollow body with an open side is provided, which rests on a cliché. An agitator is rotatably driven in the hollow body. This ensures that there is no solidification of the paint, but refilling the hollow body with paint is cumbersome and time-consuming.
• DE 3737937 A describes a pad printing machine with a refillable container with an exchangeable doctor blade.
• the invention is based on the task Training device easier and maintenance-free so that the refilling and cleaning of the rake device can be done much faster and cleaner.
• the invention is achieved in any case if the proposed device consists of such individual parts which enable the paint container to be replaced quickly and cleanly.
• doctor blade can be screwed to the ring or can be connected via a bayonet lock. These measures make it quick and easy to replace the ring.
• the outside of the ring carries a height-adjustable l Lba res magnetic member.
• the organ's task is to increase the contact pressure of the squeegee ring, which can be moved back and forth on the cliché. If this is a magnetic element in the form of an outer ring that can be screwed to the ring, the contact pressure can be changed continuously.
• the invention takes advantage of the fact that the magnitude of the force acting between the cliché made of metal and the magnetic element depends on the distance between the two Parts is interdependent.
• the outer ring is a magnetic ring or consists of another material and has several receptacles for magnetic bodies.
• the outer ring can thus consist of plastic or metal, in which radial or axial bores or recesses are formed, in which the magnetic bodies are accommodated.
• Fig. 1 is a pad printing machine in side view
• Fig. 2 shows the part labeled X of the pad printing machine according to Fig. 1 enlarged.
• a pad printing machine 10 is shown with a tampon 32, which carries out vertical back and forth movements, which is indicated by the vertical double arrow l.
• the tampon 32 cooperates with the cliché 34 on which the inking and rake Ivorri device 11 can be moved back and forth, which is indicated by the horizontal double arrow l.
• the inking and rake correction device 11 has a paint container 12 and a hollow body 14 (see FIG. 2), the bottom side 16 of which carries the doctor blade 18, while the cover side can be detachably connected to the paint container 12.
• the hollow body 14 is in the form of a ring with an internal thread
• the doctor blade 18 is releasably connectable to the ring 14, either via a screw connection or a bayonet lock.
• the outer ring 28 is made of metal or plastic and has a plurality of receptacles 30 for magnetic bodies, not shown. However, the outer ring 28 could also be designed as a magnetic ring.
• the proposed inking and doctoring system is integrated in a tampon printing machine and forms a hermetically sealed ink container and an integrated, interchangeable doctoring system as well as a directly flanged, exchangeable and resealable ink reservoir.
• the paint can is a commercially available container, in particular a bottle made of plastic or metal, the thread of which is matched to the internal thread 24 of the hollow body 14.
• the ink container 12 is properly connected to the hollow body 14, the ink container 12 is connected to the squeegee 18 in a medium-tight manner, so that these parts have the properties of a one-piece body with a single opening which is formed in the area of the plate 20.
• this deficiency can be remedied by an adapter.
• the adapter would be z. B. in the form of an internal and external thread having formed ring, whose external thread is matched to the internal thread 24, while its internal thread would be matched to the external thread of the container 12.
• This adapter could e.g. B. consist of plastic or metal.
• the ink can can be exchanged as follows: The inking and rake ivorri direction is released from its drive device, which moves it back and forth in the direction of the double arrow. The cliché can then be stripped off the side of the doctor ring. Then the rag ring and the magnetic ring are exposed and the ink reservoir is accessible from above. The doctor ring is unscrewed together with the magnetic ring from the ink can and can be cleaned. The paint can can now be closed with a screw cap and is available for further use until further notice. If the content of the paint can is used up, it can easily be replaced by a full paint can.
• the squeegee ring is screwed onto the lid-free paint can, the cliché is placed on the rag ring and is thus on the cover side of the can. Now the entire unit can be rotated together by 180 ° and inserted into the pad printing machine.

Landscapes

• Coating Apparatus (AREA)
• Screen Printers (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=6406512

Family Applications (1)

Country Status (2)

Cited By (5)

Families Citing this family (13)

Citations (2)

Family Cites Families (2)

• 1990
  • 1990-05-16 DE DE19904015684 patent/DE4015684A1/de active Granted
• 1991
  • 1991-04-25 WO PCT/DE1991/000339 patent/WO1991017888A1/de unknown

Patent Citations (2)

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