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    • 3. 发明授权
    • Method of manufacturing a multilayer molding
    • 多层成型体的制造方法
    • US5645786A
    • 1997-07-08
    • US677193
    • 1996-07-09
    • Haruo OkadaHidemi AokiYasuhiko TakeuchiKunio Yuhara
    • Haruo OkadaHidemi AokiYasuhiko TakeuchiKunio Yuhara
    • B29C45/16B29C45/23B29L9/00
    • B29C45/1603B29C45/1642Y10S264/57
    • An improved method of manufacturing a multilayer molding having a core and a surface layer by means of a double nozzle structure can eliminate a damaging phenomenon of producing a mixture of a resin material for forming the core remaining in and out of the aperture of the inner nozzle of the double nozzle structure and a resin material for forming the surface layer in the initial stages of molding operation by effectively driving back the remaining resin into the inner nozzle. A double nozzle structure that can suitably be used with such a method includes a shut-off pin arranged in the inner nozzle disposed at the center of the outer nozzle. The resin material for forming the core is driven out simultaneously with the resin material for forming the surface layer coming from the outer nozzle. The operation of resin injection from the inner nozzle is terminated at an arbitrarily selected moment during the operation of injecting the resin material for the surface layer of the outer nozzle. Then, the inside of the inner nozzle is brought into a no-load condition while the shut-off pin is held to its open position. Thereafter, the remaining resin material for the core found in and out of the aperture of the inner nozzle is driven back into the inner nozzle by the pressure of the resin injected from the outer nozzle. Finally, the inner nozzle is closed by the shut-off pin and the injecting operation of the outer nozzle is terminated.
    • 通过双喷嘴结构制造具有芯和表面层的多层模制品的改进方法可以消除产生残留在内喷嘴孔内的芯的树脂材料的混合物的损坏现象 的双喷嘴结构的树脂材料和用于在成型操作的初始阶段形成表面层的树脂材料,通过有效地将剩余的树脂驱回到内部喷嘴中。 可以适当地使用这种方法的双喷嘴结构包括布置在设置在外喷嘴的中心的内喷嘴中的切断销。 用于形成芯的树脂材料与用于形成来自外部喷嘴的表面层的树脂材料同时被驱除。 在喷射外部喷嘴的表层的树脂材料的操作期间,从内部喷嘴进行的树脂注入的操作在任意选择的时刻终止。 然后,在关闭销保持在其打开位置的同时,使内部喷嘴的内部进入空载状态。 此后,通过从外部喷嘴喷射的树脂的压力,发现在内部喷嘴的孔内的剩余的用于芯的树脂材料被驱回到内部喷嘴中。 最后,内部喷嘴被关闭销关闭,并且外部喷嘴的喷射操作终止。
    • 7. 发明授权
    • Motor driven type die tightening apparatus for an injection molding
machine
    • 用于注射成型机的电动机型模具紧固装置
    • US5378141A
    • 1995-01-03
    • US114658
    • 1993-08-31
    • Hidemi Aoki
    • Hidemi Aoki
    • B22D17/26B29C33/22B29C45/17B29C45/66
    • B29C45/66B29C45/1761
    • A motor driven type die tightening apparatus for an injection molding machine includes a plurality of tie bars horizontally bridged between a pair of stationary die boards mounted on a platform of the injection molding machine, and a movable die board is displaceably arranged between the stationary die boards with the tie bars inserted therethrough. A part of each of the tie bars inserted through the movable die board is designed in the form of a ball screw shaft adapted to be threadably engaged with a ball nut member. As an electric motor installed on one of the stationary die boards is rotationally driven to rotate the ball nut members, the movable die board is slidably displaced toward or away from one of the stationary die boards. A rotary sleeve having a number of balls arranged on the inner peripheral surface thereof is received in a stationary case firmly fitted into the movable die board, and a rotational shaft designed in the form of a ball spline shaft is inserted through the movable die board so as to enable the movable die board to be displaced in the axial direction by engagement of the balls with a plurality of splines formed along the spline shaft. The ball nut members, the rotary sleeve, the rotational shaft and the electric motor are operatively connected to each other via rotational power transmission members each extending around these components. The rotational power transmitting member is usually designed in the form of a geared endless belt.
    • 一种用于注射成型机的马达驱动型模具紧固装置,包括水平地桥接在安装在注射成型机的平台上的一对固定模板之间的多个连接杆,以及可移动的模板,可移动地布置在固定模板 连杆穿过其中。 通过可移动模板插入的每个连接杆的一部分被设计为适于与滚珠螺母构件螺纹接合的滚珠丝杠轴的形式。 当安装在固定模板之一上的电动机被旋转地驱动以使滚珠螺母构件转动时,可移动模板可朝向或远离固定模板之一滑动。 具有布置在其内周表面上的多个滚珠的旋转套筒被容纳在牢固地装配到可动模板中的固定壳体中,并且以滚珠花键轴的形式设计的旋转轴通过可动模板插入, 通过使滚珠与沿着花键轴形成的多个花键的啮合,能够使活动模板沿轴向位移。 滚珠螺母构件,旋转套筒,旋转轴和电动机通过围绕这些部件延伸的旋转动力传递构件彼此操作地连接。 旋转动力传递构件通常设计成齿轮环形带的形式。