Mold stripping method for injection molding products with pinholes and pin drawing type mold
A technology for injection molding products and demoulding, which is applied in the field of needle-pulling molds and can solve problems such as increasing processes and production costs.
Active Publication Date: 2012-01-18
季伯青
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Problems solved by technology
Since the product and the nozzle material are connected after demoulding, it is necessary to separate the product from the nozzle material by manual methods, which increases the process and production costs
Method used
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[0018] A demoulding method for an injection molded product with pinholes in the present invention and the needle-drawing mold required for realizing the method will be further described below in conjunction with the accompanying drawings.
[0019] (1) Reference figure 1 , when the mold is in the mold closing state, the needle extractor plate 5 is in a compressed state, and the needle extractor 14 and the product are located in the mold cavity; refer to figure 2 , when the mold is opened, the fixed mold core is separated from the movable mold core, and the needle extractor plate translation device 12 first translates the needle extractor plate 5 along the direction perpendicular to the molding surfaces of the fixed mold core 2 and the movable mold core 3, and the translation position Do not exceed the sawtooth groove 16 on the positioning baffle 13. At this time, the needle 14 and the product come out of the mold cavity, and the product and the nozzle material are in a disconn...
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The invention relates to a demolding method of injection molding products with pinholes and a pin drawing type mold. The mold comprises a pin drawing plate translation device which is a spring, and the spring is arranged in a sliding block or on a connecting rod. When the mold is opened, firstly, the spring translate the pin drawing plate in a direction vertical to the molding surface of a mold core to remove the drawing pin and the product out of a molding cavity of the mold, and the product is disconnected with a degraded material simultaneously; then, the sliding block slides on a guide rail to drive the pin drawing plate to translate in a direction parallel to the molding surface of the mold core; under the action of a positioning baffle plate, the drawing pin is drawn out of the product and completely separated from the product; and then, an ejector pin plate is pushed, and an ejector pin on the ejector pin plate pushes the degraded material out of a degraded material cavity. In the design of the invention, the injection molding product is completely separated from the degraded material and removed out of the mold, and the manual separation is not needed, thereby reducing theworking processes; and the mold core which generally adopts a single-side flow passage design can save materials, thus the production cost can be reduced.
Description
Technical field [0001] The invention relates to a demoulding method of an injection molding product with pinholes and a needle-drawing mold. Background technique [0002] Now, when using the injection molding machine to process and produce clothing accessories and some decorations with pinholes, it is necessary to use a needle-drawing injection mold. The demoulding method is: when the mold is opened, push the slide in the needle-drawing mold. block, so that the slider slides on the guide rail, and the needle-drawing plate connected with the slider moves in parallel with the slider along the direction parallel to the molding surface of the mold core, so that the needle is drawn out from the product. After that, push the ejector plate, and the ejector pin will be connected The products together are ejected together with the nozzle material to complete the demoulding. Since the product and the nozzle material are connected after being demoulded, it is necessary to manually sep...
Claims
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IPC IPC(8): B29C45/40B29C45/26
Inventor 季伯青
Owner 季伯青