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1. 发明公开

EP3919252A1 MOLDING DEVICE AND SYSTEM FOR PRODUCING MOLDED ARTICLE 审中-公开
公开(公告)号：EP3919252A1
公开(公告)日：2021-12-08
申请号：EP20748237.3
申请日：2020-01-23
申请人： Kyoraku Co., Ltd. , Sika Machinery Co., Ltd.
发明人： CHANG, Tzu Chiang , ITO, Shuji , IGARASHI, Yu
IPC分类号： B29C49/04 , B29C49/32 , B29C49/42 , B29C49/56 , B29C49/72 , B29C33/20 , B29C33/22 , B29C33/44
摘要： The present invention provides a molding apparatus provided with a transfer means capable of transferring a heavy-weight mold clamping device.
The present invention provides a molding apparatus that molds a molded product, comprising: a mold clamping device clamping a parison extruded from an extruder to obtain a molded body, a transfer rail to support the mold clamping device in a transferable manner, and an electric cylinder to transfer the mold clamping device along the transfer rail, wherein, the mold clamping device comprises first and second platens for holding a die, and a clamping drive unit for driving the first and second platens closer to or separated from each other, the electric cylinder comprises a motor having an output shaft and a feed screw mechanism that converts the rotary motion of the output shaft into a linear motion, and, the electric cylinder further comprises at least one of the following configurations 1) and 2).
1) The motor is a brake motor having a brake, and the rotation of the output shaft can be braked by the brake.
2) A clutch is provided, and the clutch can switch between a state in which the output shaft and the feed screw mechanism are connected and a state in which the connection between the output shaft and the feed screw mechanism is loosened.

2. 发明授权

EP3287255B1 MOLTEN RESIN EXTRUSION DEVICE AND EXTRUSION METHOD AS WELL AS MOLTEN RESIN MOLDING APPARATUS AND MOLDING METHOD 有权
公开(公告)号：EP3287255B1
公开(公告)日：2019-08-28
申请号：EP16783177.5
申请日：2016-04-20
申请人： Kyoraku Co., Ltd.
发明人： ITO, Shuji , MASUDA, Satoshi
IPC分类号： B29C49/04 , B29C51/02 , B29C51/10 , B29C48/25 , B29C48/475

3. 发明公开

EP3437824A1 MOLD CLAMPING DEVICE 有权
公开(公告)号：EP3437824A1
公开(公告)日：2019-02-06
申请号：EP17775560.0
申请日：2017-03-31
申请人： Kyoraku Co., Ltd.
发明人： ONO, Yoshinori , SHIMADA, Kengo , MUROYA, Yosuke , ITO, Shuji
IPC分类号： B29C45/66 , B29C33/22
摘要： Provided is a mold clamping device that can simplify the component count or structure by including a mold thickness adjustment mechanism that reduces the load on a power source, is easily maintained, and has high design flexibility. Also provided is a mold clamping device that can set a long distance (daylight) between molds without having to upsize the entire mold clamping device and can simplify the component count or structure.
A mold clamping device for split molds includes a first platen, a second platen, a pressure receiving platen, and a mold thickness adjustment mechanism disposed on the pressure receiving platen. At least one of the first platen and the second platen is able to move back and forth so as to approach or depart from the other. The pressure receiving platen is located on a side remote from the first platen, of the second platen. The mold thickness adjustment mechanism includes a rod-shaped rotation member, a power source configured to rotate the rotation member around a rotation axis of the rotation member, the rotation axis being parallel to a longitudinal direction of the rotation member, and a pair of converters configured to convert rotation direction of the rotation member into a movement direction of the second platen. A mold clamping device for split molds includes polygonal first and second platens, a pressure receiving platen, and a toggle mechanism. At least one of the first platen and the second platen is able to move back and forth so as to approach or depart from the other. The pressure receiving platen is located on a side remote from the first platen, of the second platen. The toggle mechanism is disposed between the second platen and the pressure receiving platen and on a diagonal line of the second platen and configured to cause the first and second platens to approach or depart from each other.

4. 发明公开

EP3287255A1 MOLTEN RESIN EXTRUSION DEVICE AND EXTRUSION METHOD AS WELL AS MOLTEN RESIN MOLDING APPARATUS AND MOLDING METHOD 有权
标题翻译：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
公开(公告)号：EP3287255A1
公开(公告)日：2018-02-28
申请号：EP16783177.5
申请日：2016-04-20
申请人： Kyoraku Co., Ltd.
发明人： ITO, Shuji , MASUDA, Satoshi
IPC分类号： B29C47/54 , B29C49/04 , B29C51/02 , B29C51/10
CPC分类号： B29C48/252 , B29C48/0017 , B29C48/08 , B29C48/09 , B29C48/2694 , B29C48/30 , B29C48/301 , B29C48/305 , B29C48/32 , B29C48/475 , B29C49/04 , B29C49/041 , B29C51/02 , B29C51/10
摘要： 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.
摘要翻译：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。

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