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    • 31. 发明专利
    • Mixing tip for injection nozzle
    • 注射喷嘴混合提示
    • JP2008213464A
    • 2008-09-18
    • JP2007333846
    • 2007-12-26
    • Fuiisa KkShowa Gosei Kkフィーサ株式会社昌和合成株式会社
    • SAITO SUSUMUUMEMOTO HIROKI
    • B29C45/20B29C45/27
    • B29C45/581
    • PROBLEM TO BE SOLVED: To provide a constitutionally-simple and inexpensive mixing tip for an injection nozzle, which can be easily maintained, which can be easily mounted on an injection molding machine, and which can suppress a loss caused by the occurrence of irregular color during continuous molding (during automatic operations).
      SOLUTION: This mixing tip for the injection nozzle, which is arranged in a sprue part in the injection nozzle allowing the passage of a molten resin, performs the mixing of the molten resin by imposing restrictions on the channel of the molten resin. The mixing tip has tapered parts which are formed at front and back ends, reepsctively; and the tapered parts at the front and back ends are formed at different angles different from each other, so as to be capable of being arranged in the sprue part in such a manner that longitudinal directions are interchanged.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:为了提供一种易于维护的,易于安装在注射成型机上的用于注射喷嘴的简单且便宜的混合头,并且可以抑制由该发生引起的损失 在连续成型期间(在自动操作期间)具有不规则颜色。 解决方案:用于注射喷嘴的混合尖端,其设置在允许熔融树脂通过的喷嘴中的浇道部分中,通过对熔融树脂的通道施加限制来进行熔融树脂的混合。 混合尖端具有形成在前端和后端的渐尖部分, 并且前端和后端的锥形部分形成为彼此不同的角度,以便能够以纵向方向互换的方式布置在浇口部分中。 版权所有(C)2008,JPO&INPIT
    • 33. 发明专利
    • Apparatus for preventing back-flow at screw head section
    • 防止螺丝头部回流的装置
    • JPS61100427A
    • 1986-05-19
    • JP22147084
    • 1984-10-22
    • Jiyuken Kogyo:Kk
    • MATSUURA MOTOO
    • B29C45/52B29C45/58B29C45/60
    • B29C45/581B29C45/52B29C2045/528
    • PURPOSE:To prevent a melted plastic from staying in a ring, by forming a plastic kneading passage in a ring or a screw head. CONSTITUTION:A melted plastic is passed through a kneading passage 6 of a ring 5 where it is kneaded and is extruded forward of a screw head 3. At this time, since a nozzle 8 is closed, when the screw 1 together with the screw head is moved upward a certain distance, the rotation is stopped and the screw 1 is pushed out downward. Then the nozzle 8 is opened to inject the melted plastic into a mold, the back-flow preventing ring 5 is moved upward by the reaction of the injection, and a seat surface 4 and a valve seat 2 are stuck together to prevent the plasticized flow from flowing back. Further as the plasticized flow is moved forcibly along the passage 6 at all times during the rotation of the screw 1, the plasticized flow can be prevented from staying partly in the ring.
    • 目的:通过在环或螺丝头中形成塑料捏合通道,防止熔融的塑料留在环中。 构成:将熔融的塑料通过环5的捏合通道6,在其中被捏合并在螺杆头3的前方挤出。此时由于喷嘴8关闭,当螺杆1与螺钉头一起 向上移动一定距离,旋转停止,螺钉1向下推。 然后打开喷嘴8以将熔融的塑料注入模具中,通过喷射反应使防回流环5向上移动,并且将座面4和阀座2粘合在一起以防止塑化流动 从流回来。 此外,随着塑化流在螺杆1旋转期间始终沿着通道6强制地移动,可以防止塑化的流动部分地停留在环中。