| 摘要 |
An injection mold unit is provided for an alternate feed, injection molding of parts of a plasticized material and has first and second plasticizing and injection devices, with a respective bores and a mold comprising a heating channel block and a mold cavity. The heating channel has a first passageway connected to the bore of the first plasticizing and injection device, the first passageway having first and second branches in fluid communication with the mold cavity. The heating channel also has as well as a second passageway connected to the bore of the second plasticizing and injection machine and having first and second branches in fluid communication with the mold cavity. One way valves are located in each of the first and second branches of the first and second passageways. The one way valves respectively located in the first branches of the first and second passageways control a flow of plasticized material in a first direction from one of the plasticizing and injection devices, through the mold cavity, and to the other plasticizing and injection device. The one way valves respectively located in the second branches of the first and second passageways controlling a flow of plasticized material in a second direction from the other plasticizing device, through the mold cavity, and to the one plasticizing and injection device, whereby plasticized material is alternately fed to and through the mold cavity.
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