发明名称 |
Multi-cavity, co-injection molding apparatus |
摘要 |
An injection moulding apparatus (10) includes similar co-injection modules (12) each provided with common supplies (238-242) and supplied with different polymer materials at intermediate pressure by common plasticisers (14-18). Each module has a co-injection nozzle assembly (70) in wich each nozzle (148-154) is supplied with polymer at injection pressure by an injector (208) which receives polymer through a non-return valve (220). The injector is mounted alongside the nozzle on a polymer transfer plate (138-146), and has the position of its piston (212) controlled by a hydraulic actuator (214) under the control of a dedicated micro-processor (164) in accordance with a stored injection control program. Each polymer is injected by an injector (208) directly into the associated nozzle (148-154) and is controlled solely by injector operation, and without the use of any control valve between the injector and the nozzle. The module micro-processors are controlled by a host processor which organizes the operations of the apparatus.
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申请公布号 |
US5028226(A) |
申请公布日期 |
1991.07.02 |
申请号 |
US19900523260 |
申请日期 |
1990.05.14 |
申请人 |
CMB FOODCAN PLC |
发明人 |
DE'ATH, RODERICK M.;FAIRCHILD, DECEASED, BRIAN;FLUDE, IAN |
分类号 |
B29C;B29C45/16;B29C45/20;B29C45/26;B29C45/54;B29C45/76 |
主分类号 |
B29C |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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