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    • 3. 发明授权
    • Sheet-feeding mechanism for flat-bed screen printer
    • 平板丝印机的送纸机构
    • US4305331A
    • 1981-12-15
    • US142984
    • 1980-04-23
    • Fabio Colapinto
    • Fabio Colapinto
    • B41F15/08B41F15/22B41F1/36B41F21/05B41L13/00
    • B41F15/22B41F15/0818Y10T156/1793
    • A screen printer has a flat bed coplanar with a loading and an unloading surface on opposite sides thereof, the bed being divided into a stationary middle section and two movable outer sections confronting one another along boundary lines paralleling the direction of movement of copy sheets from the loading surface to the unloading surface. Such movement is effected with the aid of a conveyor comprising two chains underneath the bed entraining sheet-gripping jaws through the gaps formed between these sections when they are transversely separated. The jaws are almost flush with the plane of the bed and the loading and unloading surfaces; upon closure of the bed sections, they are received in cutouts of the outer sections and are thus immobilized while a printing screen descends into contact with a copy sheet overlying the bed.
    • 丝网印刷机具有平面床,其平面在其相对侧上具有装载和卸载表面,床被分为固定的中间部分和两个可移动的外部部分,沿着与复印纸的移动方向平行的边界线彼此面对 将表面装载到卸载表面。 这样的运动借助于包括两个链条的输送机,当它们横向分离时,该输送机包括两个链条,所述两个链条在床夹带片夹持爪之间穿过形成在这些部分之间的间隙。 颚板几乎与床的平面和装载和卸载表面齐平; 在床部分闭合时,它们被容纳在外部部分的切口中,并且因此固定在印刷屏幕与覆盖在床上的复印纸片接触的同时。