Hydraulic forging press and method for controlling same

    公开(公告)号:US10786847B2

    公开(公告)日:2020-09-29

    申请号:US15524101

    申请日:2015-10-29

    摘要: A hydraulic forging press machine and a control method, whereby surging of the forging load or dead zones where the forging speed goes to zero is suppressed, and forging is performed with high precision throughout a wider range than the prior art, from low to high load. Pressure cylinders have a main pressure cylinder configured so working fluid is supplied during forging, and secondary pressure cylinders are configured so supplying and stopping of the supply of working fluid thereto are switched in response to the forging load, head-side hydraulic chambers of the secondary pressure cylinders being connected to a head-side hydraulic chamber of the main pressure cylinder via electromagnetic switching valves. Only the main pressure cylinder is used until the forging load exceeds a set load, and the number of secondary pressure cylinders used is sequentially increased as the forging load increases after the forging load exceeds the set load.

    Passive hydraulic load leveler for thermal compression bonding

    公开(公告)号:US10438919B1

    公开(公告)日:2019-10-08

    申请号:US15195487

    申请日:2016-06-28

    摘要: A press including a passive load leveler for bonding integrated circuit wafers, chips or substrates. The press includes a press frame, a press ram moveable relative to the frame, a first platen coupled to the press ram, and a second platen coupled to the press frame. The load leveler is coupled between the press frame and the second platen, and includes a main body having a first surface coupled to the press frame a plurality of pistons extending from the main body through a second surface and being in contact with the second platen. Each of the pistons is positioned within a piston chamber that is in fluid communication with a network of channels within the main body, where the pistons move relative to each other through a working fluid within the channels so as to maintain the first and second platens parallel to each other under the ram pressure.

    Cycle press
    39.
    发明授权

    公开(公告)号:US10011084B2

    公开(公告)日:2018-07-03

    申请号:US14117051

    申请日:2012-05-22

    摘要: The invention relates to a cycle press, in particular a short-cycle press, for producing and/or coating board-shaped materials, in particular engineered wood boards, comprising a press body having several press frames arranged next to one another in the longitudinal press direction, and further comprising an upper press plate and a lower press plate, wherein pressing cylinders supported on the press frames act on the upper press plate or the lower press plate. According to the invention, said cycle press is characterized in that the pressing cylinders are attached to the press frames by means of frame pins, wherein said frame pins engage in cut-outs of the press frames. Thus, the pressing cylinders can be prestressed against the press frames.

    Press with improved maintenance
    40.
    发明授权
    Press with improved maintenance 有权
    按维修改善

    公开(公告)号:US09114584B2

    公开(公告)日:2015-08-25

    申请号:US14006382

    申请日:2012-03-21

    IPC分类号: B30B1/34 B30B15/06 B30B11/02

    摘要: Guide and retaining assembly for a press compensator comprising: a guide bushing (32) for the compensator (20) in its bore, said guide bushing being designed to be fitted around the compensator, a retaining nut (38) that that is configured to be screwed into the bore, the guide bushing (32) being located between a shoulder on the compensator and the retaining nut (38), and means (44) axially fixing the guide bushing (32) and the retaining nut (38) while maintaining an axial and transverse clearance between the guide bushing (32) and the retaining nut (38), said means (44) being such that the guide bushing (32) is free to rotate relative to the retaining nut (38).

    摘要翻译: 用于压力补偿器的引导和保持组件,包括:用于其孔中的补偿器(20)的引导衬套(32),所述引导衬套设计成围绕补偿器安装,保持螺母(38)被构造成 螺纹连接到孔中,引导衬套(32)位于补偿器上的肩部和保持螺母(38)之间,以及装置(44)轴向地固定引导衬套(32)和保持螺母(38),同时保持 所述导向套管(32)和所述固定螺母(38)之间的轴向和横向间隙,所述装置(44)使得所述导向套管(32)相对于所述保持螺母(38)自由旋转。