A glue-feeding device and glue-feeding method for injection-molded water tanks

A technology for glue feeding and water tank, which is applied in the field of glue feeding devices for injection molding water tanks. It can solve the problems of flow lines and shrinkage of water tanks, and achieve the effects of solving shrinkage, improving pressure retention, and solving weld line problems.

Active Publication Date: 2021-02-26
ZHUHAI GREE PRECISION MOLD CO LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the glue feeding method of the injection-molded water tank in the prior art is easy to produce flow marks and shrinkage problems on the appearance surface of the water tank, thereby providing a water tank that can eliminate the flow marks on the appearance surface of the water tank. Glue feeding device and glue feeding method for injection molding water tank and shrinkage problem

Method used

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  • A glue-feeding device and glue-feeding method for injection-molded water tanks
  • A glue-feeding device and glue-feeding method for injection-molded water tanks
  • A glue-feeding device and glue-feeding method for injection-molded water tanks

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Embodiment 1

[0038]Such asFigure 2-3As shown, a glue feeding device for injection molding water tank 6 of the present invention includes

[0039]There are at least four needle valve nozzles arranged in two rows, including a first row of needle valve nozzles located close to the appearance surface 62 of the water tank 6, and a second row of needle valve nozzles located away from the appearance surface 62 of the water tank 6, The needle valve nozzles are all point at the bottom 61 of the water tank 6 to feed glue;

[0040]Glue injection structure to inject glue into each of the needle valve nozzles.

[0041]Since the first row of needle valve nozzles are located close to the appearance surface 62 of the water tank 6, the rubber is first filled in the cavity where the appearance surface 62 of the water tank 6 is located, and then the cavity where the rib 63 is located, which can effectively avoid the appearance of the product Flow lines are generated on the surface 62, and at the same time, the arrangement ...

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Abstract

A glue feeding device for injection molding water tanks of the present invention includes at least four needle valve nozzles arranged in two rows, including the first row of needle valve nozzles arranged close to the exterior surface of the water tank, and the needle valve nozzles far away from the water tank. The second row of needle valve nozzles arranged on the appearance surface, the needle valve nozzles are all placed on the bottom of the water tank to feed glue; the glue injection structure injects glue into each of the needle valve nozzles. The glue-feeding method of the injection water tank of the present invention comprises: the flow channel setting step: setting four or more flow channels at the bottom of the water tank, and the flow channels are arranged in two rows, and the first row is close to the appearance surface of the water tank Setting, the second row is set away from the exterior surface of the water tank; the glue feeding control step: controlling the glue feeding of the first row of runners and the second row of runners. The glue feeding device and the glue feeding method of the present invention can effectively eliminate defects such as flow lines, shrinkage, weld lines, mold runaways and the like on the appearance surface of the water tank.

Description

Technical field[0001]The invention relates to the field of injection molding, in particular to a glue feeding device and a glue feeding method for an injection molding water tank.Background technique[0002]The water tank includes a bottom, an appearance surface arranged on the bottom, and a reinforcing rib with one end connected to the inner side of the appearance surface. In the prior art, when injecting water tanks, there are usually two ways to feed glue:[0003]The first is to use the cold runner large nozzle to feed the glue at the bottom of the water tank. This glue feeding method requires manual cutting of the nozzle material during production, resulting in nozzle waste, which is not conducive to automated production, and will cause the water tank due to improper operation of the nozzle. There is a hidden danger of water leakage.[0004]The second is to use a pin-point hot runner at the bottom of the water tank for single point injection. When this single point injection method is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/27B29C45/28B29C45/76
CPCB29C45/27B29C45/28B29C45/281B29C45/76B29L2031/712
Inventor 陈土辉夏庆雷徐少华翁卫军王云飞郭峰林强黄国军蔡国旗
Owner ZHUHAI GREE PRECISION MOLD CO LTD
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