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    • 4. 发明公开
    • MOLTEN RESIN EXTRUSION DEVICE AND EXTRUSION METHOD AS WELL AS MOLTEN RESIN MOLDING APPARATUS AND MOLDING METHOD
    • 熔融树脂挤出装置和挤出方法以及熔融树脂成型装置和成型方法
    • EP3287255A1
    • 2018-02-28
    • EP16783177.5
    • 2016-04-20
    • Kyoraku Co., Ltd.
    • ITO, ShujiMASUDA, Satoshi
    • B29C47/54B29C49/04B29C51/02B29C51/10
    • B29C48/252B29C48/0017B29C48/08B29C48/09B29C48/2694B29C48/30B29C48/301B29C48/305B29C48/32B29C48/475B29C49/04B29C49/041B29C51/02B29C51/10
    • Provided is a method for extruding molten resin in a charging space from a head by converting a rotational motion of an electric motor into a linear motion of a piston disposed in the charging space through a ball screw and thus causing the piston to move vertically, the charging space being a space into which the molten resin can be charged and formed in an accumulator, the head having an extrusion port at a lower end thereof. The method includes a step of separating an upper plate from a lower plate and retracting the upper plate upward by a rotational motion of the electric motor and then charging the molten resin into the charging space with a sufficient charging pressure to push up the piston against weights of the lower plate and the piston in the charging space, the lower plate being disposed over the accumulator and coupled to the piston from above, the upper plate being engaged with the electric motor through a screwing relationship and disposed over the lower plate so as to be able to surface-contact the lower plate and a step of extruding the molten resin from the extrusion port by moving the upper plate downward with the upper plate and the lower plate surface-contacting each other by a rotational motion of the electric motor and thus moving the piston downward in the charging space.
    • 本发明提供一种通过将电动马达的旋转运动通过滚珠丝杠转换为设置在充电空间中的活塞的线性运动并由此使得活塞垂直移动而从头部挤出充电空间中的熔融树脂的方法, 所述充填空间是熔融树脂可以充入并形成在储存器中的空间,所述头部在其下端具有挤出口。 该方法包括将上板与下板分离并且通过电动机的旋转运动向上收回上板,然后在充足的充气压力下将熔融树脂充入充电空间以将活塞向上推压 所述下板设置在所述蓄能器上方并从上方与所述活塞连接,所述上板通过螺纹连接与所述电动机啮合并设置在所述下板上方以便于 能够通过电动机的旋转运动使上板向下移动,并且使上板和下板彼此表面接触,从而能够与下板面接触以及从挤出端口挤出熔融树脂的步骤,并且因此 在充电空间中向下移动活塞。
    • 6. 发明公开
    • METHOD OF MANUFACTURING MULTI-LAYERED PROPELLANT GRAINS
    • VERFAHREN ZUR HERSTELLUNG MEHRSCHICHTIGERTREIBMITTELKÖRNER
    • EP3033585A1
    • 2016-06-22
    • EP14836679.2
    • 2014-08-08
    • General Dynamics Ordnance and Tactical Systems - Canada Valleyfield Inc.
    • DURAND, SimonPARADIS, Pierre-YvesLEPAGE, Daniel
    • F42B33/00B29C47/06C06C9/00F42B5/16
    • C06B21/0075B29C48/09B29C48/11B29C48/21B29C48/40B29C48/475C06B25/18C06B45/105C06B45/12F42B5/16F42B33/00
    • A method of manufacturing a multi-layered propellant grain is provided. The method of the present disclosure simplifies the setup necessary to produce multi-layered propellants by using industrial equipment that is more energy and space efficient than the machinery that is conventionally employed for such processes. The method comprises providing a first propellant formulation; providing a die configured to provide a structure having an outer shell and a hollow interior when material is extruded therethrough; extruding the first propellant formulation through said die, to produce a first propellant layer having an outer shell defining a hollow interior in the form channel having open ends; providing a second propellant formulation, said second propellant formulation being of low viscosity; injecting said second propellant formulation into said channel defined by said first propellant layer to form a second propellant layer disposed in said channel; and hardening said second propellant layer. The first and second propellant layers have different rates of burning.
    • 提供一种制造多层推进剂颗粒的方法。 本公开的方法简化了通过使用比常规用于这种方法的机械更能量和空间有效的工业设备来生产多层推进剂所需的设置。 该方法包括提供第一推进剂制剂; 提供模具,其构造成当材料被挤出通过其时提供具有外壳和中空内部的结构; 将第一推进剂制剂挤压通过所述模头,以产生具有外壳的第一推进剂层,该外壳限定具有开口端的形式通道中的中空内部; 提供第二推进剂制剂,所述第二推进剂制剂具有低粘度; 将所述第二推进剂制剂注入由所述第一推进剂层限定的所述通道中以形成设置在所述通道中的第二推进剂层; 并硬化所述第二推进剂层。 第一和第二推进剂层具有不同的燃烧速率。