发明授权
- 专利标题： Hydraulic system for the mold clamping unit of a plastics injection molding machine
- 专利标题（中）： 液压系统用于塑料注塑机的模具夹紧单元
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申请号： US137023申请日： 1987-12-23
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公开(公告)号： US4846664A公开(公告)日： 1989-07-11
- 发明人: Karl Hehl
- 申请人： Karl Hehl
- 专利权人： Karl Hehl
- 当前专利权人： Karl Hehl
- 优先权： DEX3644181 19861223
- 主分类号： B29C45/67
- IPC分类号： B29C45/67 ; B29C45/77
摘要：
A hydraulic actuator assembly for use in a mold clamping unit of an injection molding machine. The actuator assembly serves as a rapid-travel drive for mold opening and closing movements and as a source of elevated mold clamping pressure. Among the hydraulic elements contributing to the operation of the mold clamping unit are a power piston for effecting elevated mold clamping pressures and a drive piston for effecting rapid die closing movements. With the hydraulic actuator system of the present invention, it is possible to control the operation of the mold clamping unit based on two-sided hydraulic influencing of the power piston and the drive piston.
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