发明名称 |
METHOD AND APPARATUS FOR COMPRESSION MOLDING PLASTIC ARTICLES |
摘要 |
A method and apparatus for compression molding plastic articles including closures, which includes providing co-acting sets of tools including a first set for moving a core and core sleeve into engagement with a cavity mold on a second set of tooling. An actuator is provided between the first set of tooling and a fixed upper cam. The second set of tooling includes an associated actuator supporting the cavity mold and associated with a lower fixed cam. A nitrogen cylinder in the second set of tooling provides for control of the compression molding force. In a preferred form, a plurality of sets of tooling are provided in circumferentially spaced relation on a rotating turret supported by a central column. A common manifold supplies the pressure at accurately controlled pressure to each of the nitrogen cylinders. A control system is provided for monitoring and changing the pressure.
|
申请公布号 |
CA2247590(A1) |
申请公布日期 |
1999.03.22 |
申请号 |
CA19982247590 |
申请日期 |
1998.09.16 |
申请人 |
OWENS-ILLINOIS CLOSURE INC. |
发明人 |
INGRAM, KEITH W. |
分类号 |
B29C43/36;B29C31/00;B29C31/04;B29C37/00;B29C43/00;B29C43/08;B29C43/18;B29C43/42;B29C43/50;B29C43/58;B29C49/06;B29C49/36;B29C49/64;B29L31/56;B30B11/00;B30B11/08;B30B15/28;(IPC1-7):B29C43/04;B29C43/32 |
主分类号 |
B29C43/36 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|