Squeegee and flood bar actuator
AssigneeAmerican Screen Printing Equipment Company
InventorsHenry J. Bubley, Claude H. Oltra
Life of this patent
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AssigneeAmerican Screen Printing Equipment Company
InventorsHenry J. Bubley, Claude H. Oltra
Estimating the term…
A screen printing press having a support frame, a printing frame pivotally mounted on the support frame and angularly movable relative thereto, a carriage assembly mounted on a pair of spaced support arms mounted on the printing frame, a single drive arm pivotally mounted on the support frame and connected by a drive rod to the carriage assembly to move the carriage assembly relative to a printing screen during a printing cycle, and a carriage assembly actuating means having an actuator channel mounted on spaced parallel legs for movement toward and away from a support arm in generally parallel relationship thereto, an actuating lever mounted for movement along said actuator channel having one end attached to a parallelogram mounting bracket on the carriage assembly on which a squeegee and flood bar are mounted so that upon movement of the actuator channel, the positions of the squeegee and flood bar are reversed, and a control lever pivotally and slidably mounted on the support frame and operatively connected to the actuator channel to control the movement of the actuator channel during a printing cycle.
In a printing press including a support frame, a bed supported on said frame and having an upwardly facing surface to receive work to be printed, a printing frame pivotally mounted on said support frame for angular movement relative thereto, a pair of support arms mounted on said printing frame for pivotal movement therewith toward and away from a printing bed, a chase pivotally mounted beneath said pair of support arms and being positioned over said work on said bed, a screen removably mounted on said chase, a carriage assembly mounted on said pair of support arms for movement therealong relative to said chase and screen, said carriage assembly having a squeegee and flood bar mounted for movement relative to one another thereon, a drive arm pivotally mounted on said support frame and operatively connected to said carriage assembly, and press drive means operatively connected to said drive arm to drive said drive arm and thereby move said carriage assembly reciprocally along said pair of support arms during a press cycle, the improvement including a carriage assembly actuating assembly mounted on said printing frame in generally parallel relationship to said pair of support arms, said actuating assembly having an elongated member operatively connected to said squeegee and flood bar by an actuator lever movable along said elongated member, said elongated member being movable toward and away from said pair of support arms and maintained in constant parallel relationship thereto by a pair of parallel legs, one of said pair of legs being pivotally mounted near each end of said elongated member, each of said pair of legs having one end thereof mounted on said elongated member, an opposite end of each of said pair of legs being mounted on one of said pair of said support arms, and a control lever assembly pivotally mounted on said support frame and operatively connected to said carriage assembly actuating assembly to move said actuating assembly relative to said pair of support arms to reverse the respective positions of said squeegee and said flood bar during said press cycle in response to the movement of said printing frame relative to said support frame and said printing bed, said control lever assembly having a lower portion with a slot formed therein which is mounted over a fixed pivot pin attached to said support frame, said slot allowing said control lever assembly to slide relative to said pivot pin and said support frame while being pivoted relative thereto, and an upper connecting portion adjustable in length relative to said lower portion of said control lever assembly, an upper end of said upper connecting portion of said control lever assembly being pivotally connected to said actuating assembly, a locking dog mounted on said control lever assembly and engaging a locking pin fixedly mounted on said support frame as said control lever assembly slides by said slot relative to said pivot pin on said support frame, to thereby lock said control lever assembly into a selected position preventing linear movement of said control lever assembly relative to said pivot pin at selected times during said press cycle and prevent unwanted movement of said actuating assembly.
A printing press including a support frame, a bed supported on said support frame and having an upwardly facing surface to receive work to be printed, a printing frame pivotally mounted on said support frame for angular movement relative thereto, said printing frame having a pair of support arms mounted on a front portion thereof for pivotal movement therewith toward and away from said bed, a chase pivotally mounted beneath said support arms and being positioned over said work on said bed, a screen removably mounted on said chase, a carriage assembly mounted on said support arms for movement theralong relative to said chase and said screen, a drive arm pivotally mounted on said support frame and operatively connected to said carriage assembly, a press drive mounted entirely on a rear portion of said printing frame and operatively connected to said drive arm to drive said drive arm and thereby move said carriage assembly reciprocally along said support arms during a printing cycle, means operatively connecting said press drive to said drive arm, said press drive operatively engaging said support frame to pivotally move said printing frame relative to said support frame about a pivot point disposed generally in the horizontal plane of said surface of said bed adjacent a rear edge of said surface during said printing cycle, said carriage assembly having a squeegee and flood bar mounted thereon, at least one carriage assembly actuating assembly mounted on said printing frame and disposed for movement relative to said support arms in generally parallel relationship thereto, said actuating assembly being operatively connected to said carriage assembly and operating to reverse the respective positions of said squeegee and said flood bar during said printing cycle by its movement relative to said support arms, a control lever pivotally mounted on said support frame and operatively connected to said actuating assembly to control the movement of said actuating assembly during the printing cycle and thereby control the movement of said squeegee and flood bar relative to said screen during said printing cycle.
Dependencies are inferred from the claim text.