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Washing machine upper frame mold

A washing machine and mold technology, which is applied in the field of the upper frame mold of the washing machine, can solve the problems of long molding cooling time, low product qualification rate, and high molding pressure, and achieve the effect of reducing the heating process of the hair dryer, satisfactory appearance, and good full pressure

Pending Publication Date: 2018-07-24
SHANGHAI YONGXING PLASTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current injection molds have the following defects: (1) the current upper frame mold of the washing machine: a three-plate mold with cold runners is used, the product height is higher, and the molding cooling time is longer
(2) The molding pressure of the product is high, it is difficult to control the process, material spots and weld lines are obvious, the product qualification rate is low, and the top white phenomenon is easy to occur after the product shrinks after molding

Method used

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  • Washing machine upper frame mold
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  • Washing machine upper frame mold

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Embodiment 1

[0024] A washing machine upper frame mold, such as Figure 2-6 As shown, it is used for the upper frame of the washing machine (for parts, see figure 1 ), including an upper mold and a lower mold, the upper mold includes an upper fixed plate 1, a stripping plate 2 and an A plate 3 arranged sequentially from top to bottom, the A plate 3 is inlaid with an upper mold core 4, and the lower mold includes a The lower fixed plate 10, the square iron 8 and the B plate are arranged in sequence from bottom to top. The lower mold core 6 is inlaid on the B plate. There is also a thimble plate 9 between the lower fixed plate 10 and the B plate. There are a plurality of workpiece thimbles 16, and the end of the workpiece thimble 16 is provided with a jacking block 7, and between the jacking block 7 and the workpiece thimble 16, a Uli rubber pad 17 is arranged. There are two square irons 8, and the thimble plate 9 is provided between the two square irons 8. The thimble plate 9 is made up o...

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Abstract

The invention relates to a washing machine upper frame mold for moulding of a washing machine upper frame. Gate inserts are employed for two connection (point gates and submarine gates) switching andthrottle valves are added, each throttle valve can ensure smooth cavity filling and balanced dissolution flow through adjustment, and the product can be free of mottle. Ejector blocks adopting ejectorpins are added with polyurethane elastomer cushions, during mold closing, the ejector blocks and parting surfaces cooperate consistently, during mold opening, the ejector blocks and a shrinkage product cooperate consistently under the action of the polyurethane elastomer cushions, therefore the problem of product surface stress mark can be well solved. Compared with the prior art, through point gate and submarine gate switching, the mold provided by the invention can solve the problem of accelerated solution flow in the mold so as to shorten the product moulding cycle and better achieve saturation pressure, improve the product injection moulding stability and reduce the follow-up de-gating process, and by improving the ejection system, the previous process of heating treatment with a hairdryer can be reduced subsequently, the produce quality is guaranteed, and the appearance can satisfy customers.

Description

technical field [0001] The invention relates to the technical field of injection molding, in particular to a mold for the upper frame of a washing machine. Background technique [0002] Injection molding, also known as injection molding, is a molding method of injection and molding. The advantages of the injection molding method are fast production speed, high efficiency, automatic operation, various designs and colors, simple to complex shapes, large to small sizes, accurate product sizes, easy replacement of products, and complex shapes. Parts, injection molding is suitable for mass production and complex shape products and other molding processing fields. But, there is following defect in current injection molding mold: (1) current washing machine upper frame mold: adopt cold runner three-plate mold, product height is higher, and molding cooling time is longer. (2) The molding pressure of the product is high, it is difficult to control the process, material spots and we...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/27B29C45/30B29C45/26B29C45/40
CPCB29C45/2602B29C45/2703B29C45/2711B29C45/30B29C45/4005
Inventor 余军波
Owner SHANGHAI YONGXING PLASTICS
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