Mold clamping device of injection molding machine

Patent metadata

Field	Value
Publication number	US-10099414-B2
Application number	US-201715687577-A
Country	US
Kind code	B2
Filing date	Aug 28, 2017
Priority date	Aug 29, 2016
Publication date	Oct 16, 2018
Grant date	Oct 16, 2018

Abstract

A mold clamping device of an injection molding machine supports a motor fixing member configured to fix a mold opening/closing motor to a rear platen, on a base frame through a support member and slide plates. When viewed from a direction of a drive shaft of the mold opening/closing motor, the width of the support member is formed to progressively increase outwardly from the motor fixing member toward the base frame, and on a portion of the support member that is located on the base frame side, the slide plates are provided at at least both ends of the portion in a width direction of the support member.

First claim

What is claimed is:

1. A mold clamping device of an injection molding machine comprising:
a stationary platen fixed to a base frame and configured to hold a fixed mold;
a rear platen movably provided on the base frame;
a plurality of tie bars configured to couple the stationary platen and the rear platen, and arranged in parallel to each other;
a moving platen provided between the stationary platen and the rear platen so as to be movable along the tie bars, and configured to hold a movable mold facing toward the fixed mold;
a drive motor configured to move the moving platen;
a fixing member provided between the drive motor and the rear platen and configured to fix the drive motor to the rear platen;
a support member coupled to the fixing member and configured to support the fixing member with respect to the base frame; and
movable support members configured to support the support member with respect to the base frame movably in a movement direction of the moving platen, wherein:
when viewed from a direction of a rotation axis of the drive motor, a width of the support member is formed to progressively increase outwardly from the fixing member toward the base frame; and
the movable support members are provided on a portion of the support member that is located on a side of the base frame, at at least both ends of the portion in a width direction of the support member.

2. The mold clamping device of the injection molding machine according to claim 1 , wherein, when viewed from the direction of the rotation axis of the drive motor,
a width of the support member on a side of the base frame is greater than a center distance between the tie bars that are adjacent to each other in the width direction, and
the movable support members are arranged outside an area between axes of the tie bars that are adjacent to each other in the width direction.

3. The mold clamping device of the injection molding machine according to claim 1 , further comprising a coupling member configured to couple the fixing member and the support member,
wherein the coupling member includes:
a jack-up bolt, wherein the jack-up bolt is screw-engaged with the fixing member, and a distal end of the jack-up bolt abuts on a surface of the support member to thereby adjust a height of the fixing member with respect to the support member; and
a fixing bolt, wherein the fixing bolt is inserted in a through-hole extending in the jack-up bolt in an axial direction thereof, and a distal end of the fixing bolt is screw-engaged with the support member.

Assignees

• Fanuc Corp

Inventors

• Senga Masatoshi
• Nishimura Kouichi

Classifications

• B29C45/66 Primary

  mechanical · CPC title

• B29C45/661 Primary

  using a toggle mechanism for mould clamping · CPC title

• B29C2045/1792

  Machine parts driven by an electric motor, e.g. electric servomotor · CPC title