Nozzle touch mechanism and injection molding machine

摘要

A nozzle touch mechanism (50) includes a base frame (6), a stationary platen (4) to which a mold (5) is to be attached, and an injection mechanism (1). The injection mechanism (1) is moved it toward the stationary platen (4) by means of a ball screw shaft (11). A motor portion (14) which applies a pressing force to the mold (5) from a nozzle (3) is connected to one end (11a) of the ball screw shaft (11). A connection mechanism (7) is provided which is connected to the other end (11b) of the ball screw shaft (11) and to the stationary platen (4) at a support located above the center of the nozzle (3). When no pressing force is applied to the mold (5) from the nozzle (3) by the motor portion (14), springs (18) can press the connection mechanism (7) in such a direction as to move it away from the stationary platen (4) with respect to the base frame (6).

主权项

1. A nozzle touch mechanism comprising:
a base frame comprising a first guide mechanism and a second guide mechanism; a stationary platen fixed to the base frame, to which a mold is to be attached; an injection mechanism configured to move toward and away from the stationary platen; a nozzle attached to the injection mechanism; a movement mechanism configured to move the injection mechanism toward and away from the stationary platen; a drive mechanism connected to one end of the movement mechanism and configured to move along the second guide mechanism, the drive mechanism configured to apply a pressing force to the mold from the nozzle by making the injection mechanism move toward the stationary platen; a connection mechanism connected to another end of the movement mechanism and configured to reciprocate along the first guide mechanism, the connection mechanism being directly or indirectly connected to the stationary platen at a support located above a center of the nozzle; and an elastic body configured to press or pull the connection mechanism away from the stationary platen with respect to the base frame when no pressing force is applied to the mold from the nozzle by the drive mechanism, wherein one end of the elastic body is attached to the connection mechanism.