发明授权
- 专利标题： Injection unit comprising a spindle drive and hydraulic support
- 专利标题（中）： 注射单元包括主轴驱动器和液压支架
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申请号： US10573800申请日： 2004-11-10
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公开(公告)号： US07306447B2公开(公告)日： 2007-12-11
- 发明人: Joerg Dantlgraber
- 申请人： Joerg Dantlgraber
- 申请人地址： DE Stuttgart
- 专利权人： Bosch Rexroth AG
- 当前专利权人： Bosch Rexroth AG
- 当前专利权人地址： DE Stuttgart
- 代理机构： Oliff & Berridge, PLC
- 优先权： DE10354954 20031125
- 国际申请： PCT/DE2004/002486 WO 20041110
- 国际公布： WO02/11969 WO 20020214
- 主分类号： B29C45/48
- IPC分类号： B29C45/48 ; B29C45/50 ; B29C45/54
摘要：
Disclosed is an injection unit (1) for an injection molding machine, comprising a screw (4) that is driven by means of a spindle drive (18). The spindle drive (18) is driven via an electric motor (6). Additionally, a force that acts in an axial direction is transmitted to the screw of the injection unit (1) via a hydraulic cylinder (38). According to the invention, a pump (48, 68) is driven via the electric motor (6). A pressure chamber (44) of the cylinder (38) can be supplied with more pressurizing means via said pump (48, 68) than is needed during an axial displacement of the plunger (36).
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