Plastic injection molding method of long thin sheet metal
A metal sheet and plastic technology, used in flat products, household appliances, other household appliances, etc., can solve the problems of affecting the performance of the finished product, unable to locate the metal sheet in the middle, increasing the difficulty, etc., to achieve good finished product performance, easy installation, The effect of improving the yield
Active Publication Date: 2013-07-24
ZHANGJIAGANG ZHONGNAN ELECTRONICS
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Problems solved by technology
[0002] For some metal devices, it is often used after plastic injection molding, and with the miniaturization of electronic products, these metal devices have become very small , especially, for some irregular shape, long and thin metal pieces, the difficulty of plastic injection molding is also increased, the existing method can not accurately position the metal piece in the middle, and due to The effect of the impact force will deform the metal sheet, thus affecting the performance of the finished product
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[0018] Below in conjunction with the embodiment shown in the accompanying drawings, the technical solution of the present invention is described in detail as follows:
[0019] A method of injection molding a long and thin metal sheet 1 of irregular shape, the method is divided into two steps: ①, initial injection molding: the metal sheet 1 (as attached figure 1 shown) into the corresponding injection mold, injection molding along the contour edge of the metal sheet 1, and injection molding on both sides to form a plurality of bosses 2, the sum of the heights of the bosses 2 on both sides plus the metal sheet 1 The thickness reaches the thickness required by the finished product to form a semi-finished product (as attached figure 2 , attached image 3 and attached Figure 4 As shown, the part with pattern filling is formed by injection molding), in which the height of each convex column 2 is the same, and the distribution of these convex columns 2: for the area where...
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Abstract
The invention discloses a plastic injection molding method of long thin sheet metal, comprising the following steps of: (1) performing primary injection molding on sheet metal: performing injection molding along the outline edge of the sheet metal, and performing injection molding on two sides to form a plurality of convex columns, wherein the sum of heights of the convex columns on two sides plus the thickness of the sheet metal reaches the required thickness of a finished product, thus forming a half-finished product; and (2) performing final injection molding on the half-finished product obtained in the step (1): positioning the half-finished product in a required injection mold by using the convex columns for injection molding to obtain the final finished product. By positioning through the convex columns in the injection mold during final injection molding, the influence of impact force generated by injection liquid on the positioning effect of the sheet metal is effectively avoided, thereby greatly improving the rate of finished products. The finished product after injection molding has good properties and is convenient to install, and the method is suitable for popularization and using in injection molding of long thin irregularly shaped sheet metal.
Description
Technical field [0001] The invention involves a long and thin metal plastic injection method. Background technique [0002] For some metal devices, it is often used for plastic injection before use. As the electronic products are increasingly miniaturized, these metal devices have become small. In particular, for some irregular shapes, long and thin shapesThe difficulty of plastic injection in metal sheets has increased. The existing method cannot accurately position the metal piece in the middle, and the impact of the injection molding liquid flow will deform the metal piece, which will affect the finished productPerformance. Invention content [0003] The purpose of the present invention is to provide a long and thin metal plastic injection method. [0004] In order to solve the above technical problems, the present invention uses the following technical solutions: [0005] A long and thin plastic injection molding method, including the following steps: ① Preliminary injection...
Claims
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IPC IPC(8): B29C45/14B29L7/00
Inventor 不公告发明人
Owner ZHANGJIAGANG ZHONGNAN ELECTRONICS