| 摘要 |
<p>A screen printing apparatus (10) is provided having a squeegee assembly (54) which includes a squeegee (64) movable across the screen (120) to force ink therethrough onto a substrate in engagement with the screen (120), wherein mechanism is provided for on-the-fly adjustment of the squeegee trailing peel angle of the screen (120) away from the substrate as the squeegee assembly (54) is moved across the screen. An elongated cam member adjacent the squegee assembly is mounted for pivotal movement adjacent the path of travel of the squeegee assembly (54) across the screen (120). A cam follower (100) carried by the squeegee assembly (54) engages the cam member (78) and effects swinging movement thereof during shifting of the squeegee assembly (54). Means connected to the cam member (78) and joined to the supporting frame for the screen (120) raises the screen frame (118) to progressively peel the screen (120) from the substrate as the squeegee assembly (54) is shifted across the screen (120). Means is also provided for selectively skewing the screen frame (118) with respect to the substrate supporting bed of the apparatus. Mechanism is further provided permitting the operator of the apparatus to selectively lift the screen frame (118) from the substrate supporting bed when the squeegee assembly (54) is lifted, or to shift only the squeegee assembly (54) away from the bed while leaving the screen frame (118) in position on the bed.</p> |
