Handle type injection die
An injection mold and handle technology, applied in the field of injection molding, can solve the problems of inconsistent wall thickness, uneven flow, and more plastics of plastic parts, and achieve the effect of consistent wall thickness and uniformity.
Inactive Publication Date: 2016-03-09
CHONGQING GANGQIAN MACHINERY
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Problems solved by technology
The feeding cavity is generally set in the middle of the upper die or the lower die, that is, the main flow channel is just in the middle and communicates with each cavity. This design is conducive to the molten plastic flowing from the runner to both sides of the cavity, but even if it is This design still has certain problems: due to the uneven flow of molten plastic in each part, it often leads to more plastic flowing to one side and less to the other side, and the wall thickness of each plastic part after molding is inconsistent.
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[0010] The present invention will be described in further detail below by means of specific embodiments:
[0011] The reference signs in the drawings of the description include: upper template 1, electric heating tube 2, upper cavity plate 3, lower cavity plate 4, upper mold insert 5, splitter cone 6, lower feeding plunger 7, metal insert 8 , Lower template 9, spring collar 10, push rod 11, support plate 12, asbestos plate 13, push rod fixed plate 14, first support block 15, push plate 16, second support block 17, plunger fixed plate 18, Pin 19, guide sleeve 20, lower mold fixing plate 21, push plate 22 on the machine tool.
[0012] The embodiment is basically as attached figure 1 As shown: the handle-type injection mold of this embodiment, the bottom is the lower mold fixing plate, the middle part of the lower mold fixing plate is provided with a guide sleeve, the upper push plate of the machine tool is located in the guide sleeve, and the upper part of the guide sleeve is t...
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The invention discloses a handle type injection die to enable the flowing speed of molten plastics flowing towards the two sides of a cavity to be even, and it is ensured that the wall thickness of formed products is consistent. The handle type injection die comprises an upper die plate, a plurality electric heat pipes are arranged on the upper die plate, and an upper cavity plate and a metal insert are arranged at the lower portion of the upper die plate side by side. A downward upper die insert and a lower cavity plate opposite to the upper cavity plate and the metal insert are arranged in the middle of the upper cavity plate. A first cavity is formed between the upper cavity plate and the lower cavity plate. A second cavity is formed between the metal insert and the lower cavity plate. A main runner is formed between the upper die insert and the lower cavity plate and communicated with the first cavity and the second cavity. The longitudinal section of the main runner is in a V shape, a downward diversion cone is arranged in the middle of the upper die insert, and the cone head of the diversion cone is located in the main runner.
Description
technical field [0001] The invention relates to pressure injection molding technology, in particular to a handle-type injection mold. Background technique [0002] Thermosetting plastics refer to plastics that can solidify or have insoluble (melting) properties under heat or other conditions, such as phenolic plastics, epoxy plastics, etc. Injection molding is a molding method in which thermosetting plastics are plasticized in the feeding chamber of the mold, and then extruded into the closed mold cavity at high speed through the gating system with the help of pressure. After curing and molding, plastic products are obtained. Existing injection molds can often form multiple products at one time, that is, multiple cavities are set, and materials are fed through the same sprue. The feeding cavity is generally set in the middle of the upper die or the lower die, that is, the main flow channel is just in the middle and communicates with each cavity. This design is conducive to ...
Claims
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IPC IPC(8): B29C45/26B29C45/73B29C45/27B29C45/33B29C45/32
CPCB29C45/26B29C45/2725B29C45/32B29C45/33B29C45/7331
Inventor 唐仁伟
Owner CHONGQING GANGQIAN MACHINERY