Machine for screen printing curved objects

Details Machine for screen printing curved objects Machine for screen printing curved objects

1992-01-30

1992-12-15

Crowder, Clifford D.

Printing

Special article machines

Rotating object

101123, B41F 1530, B41F 1730

Patent

active

051707039

ABSTRACT:
A machine for screen printing curved objects has a frame with support rods and positioning rods, a scraping assembly which slides on the support rods under the influence of a motor and a gear wheel/spur rail combination, and a pair of screen-holding structures which are anchored to the positioning rods and hold a screen therebetween. The scraping assembly and the screen-holding assembly can be vertically positioned under the influence of pneumatic cylinders. A workpiece mold holds a curved workpiece such as a bowl and is rotatable under the influence of an axle and another gear wheel/spur rail combination. Three scrapers are attached to the scraping assembly. When the motor is activated, the scraping assembly moves and the workpiece mold rotates. Outside scrapers spread ink on the screen and a center scraper applies the ink to the workpiece. A proximity switch stops the motor when the scraping assembly has moved a predetermined distance. The machine preferably has two sets of scraping assemblies and two pairs of screen-holding structures.

REFERENCES:
patent: 4352326 (1982-10-01), Kammann

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