| 摘要 |
<p>A silk screen printing frame 40 having screen tensioning rollers 44 which are rotatable to stretch a printing screen 52 edgewise across the frame and are mounted on the frame by improved roller mounting assemblies 48 that secure the rollers to roller mounting members 46 at the roller ends. Each roller mounting assembly has an end block portion 58 fixed within the adjacent roller end, a wrench engaging portion 60 beyond the roller end by which the roller may be turned and which may be integral with or a separate part from the end block portion, a bolt 62 extending axially through the end block 58 and wrench engaging portions 60 and the adjacent roller mounting member, and a lock nut 64 threaded on the outer end of the bolt for releasably securing the roller against turning. A head 66 on the inner end of the bolt engages the inner side of the end block portion 58 to restrain the bolt against being pulled outwardly through the assembly when the lock nut 64 is tightened to secure the roller against turning.</p> |
