Long-service-life arc-shaped injection head suitable for multi-injection-head packaging mold
An injection head and multi-injection technology, which is applied in the field of injection heads, can solve the problems of short service life of injection heads, easy sticking of plastic sealing materials, and high production costs, and achieve the effects of improving labor productivity, not easy to break, and good sealing performance
Inactive Publication Date: 2013-06-12
TONGLING SANJIA YAMADA TECH
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Problems solved by technology
[0003] The purpose of the present invention is to solve the problem of short service life of the injection head of the known multi-injection head packaging mold, easy sticking of plastic sealing compound, resulting in high production cost and low labor efficiency.
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[0013] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0014] Such as figure 2 , image 3 As shown, the high-life curved injection head is suitable for multi-injection head packaging molds. The injection head is cylindrical, and the center of the injection head is provided with a screw hole for easy connection. It is an inclined surface, and the angle between the inclined surface and the cylindrical surface is 20 degrees. The position of the inclined surface is about 2mm from the head of the injection head. The inclined surface is respectively connected with the cylindrical surface and the arc surface of the end surface. Groove 1 for material collection can function as a sealing ring and is used in conjunction with the material barrel to prevent material return. A radially concave ring groove 2 is provided on the cylindrical surface of the injection head. The width of the ring groove 2 should be moderate, abo...
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The invention discloses a long-service-life arc-shaped injection head suitable for a multi-injection-head packaging mold, which belongs to the field of packaging molds. The injection head is cylindrical; a screw hole which is convenient for connecting is formed in the center of the injection head; an oblique surface is formed between the end face of the working end of the injection head an adjacent cylindrical surface; the oblique surface is in cambered surface transition connection with the cylindrical surface and the end face respectively; and the cylindrical surface, close to the end face, of the working end is provided with an annular groove (1) for collecting materials. The long-service-life arc-shaped injection head has the advantages of high sealing performance, difficulty in fracturing, long service life, difficulty in making the injection head stick to scraps, increase in the labor production efficiency, and reduction in the production cost.
Description
technical field [0001] The invention relates to an injection head of a multi-injection head packaging mold. Background technique [0002] The multi-injection head packaging mold is currently the most widely used and most used packaging mold in semiconductor packaging. The injection head is the mechanism used by the packaging mold to push the molding compound contained in the barrel out of the barrel. Known injection heads such as figure 1 shown. With the rapid development of advanced integrated circuit packaging technology and the increasing calls for global environmental protection, the application of green and environmentally friendly halogen-free flame-retardant epoxy molding compounds has received more and more attention. Its main components are epoxy resin, curing agent , silicon powder and additives, because chromium, bromine, lead and other elements are less or basically absent, its performance is compared with non-environmentally friendly resins, its viscosity inc...
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IPC IPC(8): B29C45/20
Inventor 杨宇曹杰花富春代迎桃杨亚萍
Owner TONGLING SANJIA YAMADA TECH