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    Die cushion apparatus of press machine and surge pressure reduction method for die cushion apparatus
    91.
    发明申请
    Die cushion apparatus of press machine and surge pressure reduction method for die cushion apparatus 有权
    冲压机模具缓冲装置和模具缓冲装置的浪涌减压方法

    公开(公告)号：US20040187546A1

    公开(公告)日：2004-09-30

    申请号：US10801552

    申请日：2004-03-17

    Inventor： Shigeki Kodani

    IPC: B21D022/21

    CPC classification number: B21D24/02

    Abstract: In a die cushion apparatus, a pressurizing force acting on a die cushion pad is applied to a first piston of a hydraulic cylinder unit by the operation of a slide, the first piston slides inside a first cylinder and pressure oil in a first hydraulic chamber is pressurized. The first hydraulic chamber is linked to a second hydraulic chamber of a booster cylinder unit via a second check valve, so that the pressure oil of the first hydraulic chamber is pushed out into the second hydraulic chamber. When the pressure of the first hydraulic chamber is applied to a second piston, the second piston slides inside the second cylinder and gas of a gas pressure chamber is compressed, whereby a surge pressure is reduced.

    Abstract translation: 在模具缓冲装置中，通过滑动件的作用将作用于模具缓冲垫的加压力施加到液压缸单元的第一活塞，第一活塞在第一气缸内滑动，第一液压室中的压力油为 加压。 第一液压室通过第二止回阀与增压缸单元的第二液压室连接，使得第一液压室的压力油被推出到第二液压室中。 当第一液压室的压力被施加到第二活塞上时，第二活塞在第二气缸内滑动，气体压力室的气体被压缩，从而降低喘振压力。

    Impact absorption for stamping press
    92.
    发明授权
    Impact absorption for stamping press 失效
    冲压机的冲击吸收

    公开(公告)号：US5551274A

    公开(公告)日：1996-09-03

    申请号：US343085

    申请日：1994-11-21

    Applicant: Howard Hintz

    Inventor： Howard Hintz

    IPC: B21D24/02 ,  B21J7/12

    CPC classification number: B21D24/02

    Abstract: In a stamping press, an outer slide lowers an upper holding ring toward a lower holding ring for pinching the edge of a piece part for maintaining the piece part in fixed position between a lower die and a moveable upper die. Further downward displacement of the upper holding ring also moves the lower holding ring downward, stretching the piece part over the lower die. Striking of a lower die support by the lower holding ring is cushioned by gas-filled cylinders. With the stretched piece part maintained in fixed position on the lower die by the upper and lower holding rings, an inner slide then lowers the upper die toward the lower die for stamping the piece part. A drive mechanism lowers the outer and inner slides via respective pluralities of pull rods coupled to the slides. With the upper holding ring traveling at high speed at mid-stroke when it strikes the lower holding ring, a large instantaneous and momentary impact force is experienced which causes damage to press components over time. An impact absorber is attached to each of the pull rods coupled to the outer slide (and may also be connected to the pull rods coupled to the inner slide) to absorb the high impact force and cushion striking of the lower holding ring by the upper holding ring. Each impact absorber includes one or more stacked disc springs disposed about a respective pull rod for deflecting the high impact force and isolating the pull rod and associated linkage from this force.

    Abstract translation: 在冲压机中，外滑动件将上保持环朝向下保持环下降，用于夹紧零件的边缘，以将零件保持在下模和可动上模之间的固定位置。 上保持环的进一步的向下位移也使下保持环向下移动，使片部件在下模上延伸。 由下部固定环冲击下模具支撑件被气体填充的气缸缓冲。 通过上下保持环将拉伸片部件保持在下模上的固定位置，然后将内滑动件朝向下模具下降，以冲压零件。 驱动机构通过耦合到滑块的相应多个拉杆来降低外滑动件和内滑动件。 随着上保持环在撞击下保持环时在中间行程高速行驶，会产生大的瞬时和瞬时冲击力，这将导致压力部件随时间的损坏。 将一个冲击吸收器连接到耦合到外部滑动件的每个拉杆（并且还可以连接到连接到内部滑动件的拉杆）上，以吸收高的冲击力并通过上部保持件缓冲下部固定环的冲击 环。 每个冲击吸收器包括一个或多个堆叠的盘簧，围绕相应的拉杆设置，用于偏转高冲击力并将拉杆和相关联的连接件与该力隔离。

    Apparatus and method for cushioning movement of a member in a press
    93.
    发明授权
    Apparatus and method for cushioning movement of a member in a press 失效
    装置和方法，用于冲压成型机中的运动

    公开(公告)号：US5220820A

    公开(公告)日：1993-06-22

    申请号：US780127

    申请日：1991-10-21

    Applicant: John B. Terrell ,  Michael B. Budai

    Inventor： John B. Terrell ,  Michael B. Budai

    IPC: B23Q11/00 ,  B21D22/21 ,  B21D24/02 ,  B30B15/02

    CPC classification number: B21D24/02 ,  B21D22/21

    Abstract: An apparatus and method for use in cushioning movement of a member in a press includes a cushion assembly having a piston and cylinder which are movable relative to each other against the influence of fluid pressure to cushion movement of the member. A flexible diaphragm retains a body of lubricant between an inner side of the diaphragm and the piston. The body of lubricant lubricates a seal between the piston and the cylinder. Fluid pressure is applied against the outer side of the diaphragm to oppose movement of the piston during operation of the press from the open condition to the closed condition. The piston is movable relative to the cylinder, under the influence of the fluid pressure applied against the outer side of the diaphragm and transmitted to the piston, during operation of the press from the closed condition to the open condition. The piston and diaphragm are spaced apart with the body of lubricant filling the space between the piston and diaphragm.

    Abstract translation: 用于缓冲构件在压力机中的运动的装置和方法包括具有活塞和气缸的缓冲组件，所述活塞和气缸能够相对于彼此抵抗流体压力的影响而移动以缓冲构件的运动。 柔性隔膜在隔膜的内侧和活塞之间保持润滑剂体。 润滑脂润滑活塞和气缸之间的密封。 在压力机从打开状态到关闭状态的操作期间，流体压力被施加到隔膜的外侧，以抵抗活塞的移动。 在压力机从关闭状态到打开状态的操作期间，活塞可以相对于气缸移动，在施加到隔膜外侧的流体压力的影响下传递到活塞。 活塞和隔膜与填充活塞和隔膜之间的空间的润滑剂主体间隔开。

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