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    • 3. 发明授权
    • Hydraulic overload proportional valving system for a mechanical press
    • 机械压力机液压过载比例阀系统
    • US5638748A
    • 1997-06-17
    • US591870
    • 1996-01-25
    • Edward Daniel
    • Edward Daniel
    • B30B15/14B30B1/26B30B15/06B30B15/22B30B15/28
    • B30B15/284
    • The invention pertains to a press comprising, a drive mechanism, a slide and at least two connecting rods connecting between the drive mechanism and the slide for reciprocally driving the slide. At least two fluid valves are connected to respective connecting rods and manifolded together with a hydraulic chamber disposed in or adjacent the connecting rods. An electrically adjustable proportional valve is connected to the fluid valves which operate to vary the pressure at which the fluid valves open to unload the slide. A variable system pressurizing mechanism for pressuring said chambers to a predetermined system pressure is utilized while the mechanism may unload the slide if pressure within a hydraulic chamber exceeds a predetermined system pressure. A variable relief mechanism automatically relieves pressure within the hydraulic chambers dependent on an operating state of the press.
    • 本发明涉及一种压力机,包括驱动机构,滑块和连接在驱动机构和滑块之间的至少两个连杆,用于往复驱动滑块。 至少两个流体阀连接到相应的连接杆并且与设置在连接杆中或附近的液压室歧管在一起。 电动比例阀连接到流体阀,其操作以改变流体阀打开的压力以卸载滑块。 利用用于将所述腔室加压到预定系统压力的可变系统加压机构,而如果液压室内的压力超过预定的系统压力,则机构可卸载滑块。 可变释放机构根据压机的运行状态自动减轻液压室内的压力。
    • 4. 发明授权
    • Press shutheight control through hydraulic pressure
    • 通过液压压力控制
    • US5682813A
    • 1997-11-04
    • US622955
    • 1996-03-27
    • W. Craig BrewerEdward Daniel
    • W. Craig BrewerEdward Daniel
    • B30B15/06B30B15/00
    • B30B15/0035Y10T74/2151Y10T83/87
    • A mechanical press having a very precise shutheight control system. The press includes a bed connected to a frame with a slide connected with the frame for reciprocating motion opposing the bed. The slide and bed together define a shutheight of the press. A drive mechanism is attached to the frame for driving the reciprocating slide, the drive mechanism includes a drive piston and a tie rod. The shutheight control system includes a chamber located between the drive piston and tie rod with a pressurizing mechanism in communication with the chamber for selectively pressurizing the chamber with a predetermined pressure. The pressurizing mechanism causes the tie rod to one of expand and contract to thereby control press shutheight.
    • 机械压力机具有非常精确的挡板控制系统。 压机包括连接到框架的床,其具有与框架连接的用于与床相对的往复运动的滑块。 滑板和床一起定义了压机的高度。 驱动机构附接到框架以驱动往复滑动件,驱动机构包括驱动活塞和拉杆。 所述高压控制系统包括位于所述驱动活塞和拉杆之间的室,具有与所述室连通的加压机构,用于以预定压力选择性地加压所述室。 加压机构使拉杆成为膨胀和收缩之一,从而控制压力开关。
    • 5. 发明授权
    • Press shutheight control through hydraulic pressure
    • 通过液压压力控制
    • US5761971A
    • 1998-06-09
    • US842180
    • 1997-04-23
    • W. Craig BrewerEdward Daniel
    • W. Craig BrewerEdward Daniel
    • B30B15/06B30B15/00G05G1/00
    • B30B15/0035Y10T74/2151Y10T83/87
    • A mechanical press having a very precise shutheight control system is disclosed. The press includes a bed connected to a frame with a slide connected with the frame for reciprocating motion opposing the bed. The slide and bed together define a shutheight of the press. A drive mechanism is attached to the frame for driving the reciprocating slide, the drive mechanism includes a drive piston and a tie rod. The shutheight control system includes a chamber located between the drive piston and tie rod with a pressurizing mechanism in communication with the chamber for selectively pressurizing the chamber with a predetermined pressure. The pressurizing mechanism causes the tie rod to one of expand and contract to thereby control press shutheight.
    • 公开了一种具有非常精确的遮断控制系统的机械压力机。 压机包括连接到框架的床,其具有与框架连接的用于与床相对的往复运动的滑块。 滑板和床一起定义了压机的高度。 驱动机构附接到框架以驱动往复滑动件,驱动机构包括驱动活塞和拉杆。 所述高压控制系统包括位于所述驱动活塞和拉杆之间的室,具有与所述室连通的加压机构,用于以预定压力选择性地加压所述室。 加压机构使拉杆成为膨胀和收缩之一,从而控制压力开关。