发明名称 |
METHOD OF INJECTION MOLDING WITH CONSTANT-VELOCITY FLOW FRONT CONTROL |
摘要 |
In order to injection mold parts at a constant flow front velocity in a mold cavity of an injection molding system, particularly where the mold cavity has a varying thickness along its length, mold modeling software is used to calculate the cross-sectional area as a function of the distance from the gate, percentage of fill, or length of the mold cavity. Based on that cross-sectional area, the mold modeling software determines an appropriate recommended ram force profile and/or melt pressure profile that would result in filling the mold cavity at a constant flow rate. An injection molding system is then operated according to the recommended ram force profile and/or melt pressure profile. |
申请公布号 |
US2017001356(A1) |
申请公布日期 |
2017.01.05 |
申请号 |
US201615198556 |
申请日期 |
2016.06.30 |
申请人 |
iMFLUX Inc. |
发明人 |
HANSON, III Herbert Kenneth;HUANG Chow-chi;ALTONEN Gene Michael |
分类号 |
B29C45/77;B29C45/78;B29C45/76;B29C45/80 |
主分类号 |
B29C45/77 |
代理机构 |
|
代理人 |
|
主权项 |
1. A method, comprising:
simulating, using a mold flow simulator, an injection molding filling cycle; determining a flow profile comprising a cross-sectional area of a flow front of a flow of molten thermoplastic material during the simulated injection molding filling cycle; and determining a force profile based at least in part on the determined flow profile, the force profile comprising a force to be applied to an injection molding ram such that the molten thermoplastic material has a substantially uniform flow front velocity at all times during a filling of one or more mold cavities in an injection molding apparatus operating the injection molding ram according to the determined force profile. |
地址 |
Cincinnati OH US |