Foamed plastic mold

A technology of foam plastics and molds, applied in the field of foam plastic molds, can solve problems such as high production costs, affecting product foaming speed and quality, inconvenient maintenance, etc., and achieve the effect of low production costs

Active Publication Date: 2013-04-10
龙海市永隆泡沫包装有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing foam molds have the disadvantages of high production cost and inconvenient maintenance. The reasons for the above disadvantages are: the soda chamber used for mold heating and cooling and the steam channel used for product foaming share the same inlet and outlet, and the product foaming The steam outlet is connected to the soda chamber, so the foaming speed and quality of the product are affected by the infiltration of cooling water when the product is foamed, resulting in a long production cycle and poor product quality.

Method used

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Embodiment Construction

[0034] Please check figure 1 and figure 2 , a foam plastic mold 100 of the present invention is mainly used for producing foam boxes for placing electronic products. The mold 100 includes a top mold bottom plate 10, a top mold frame 20, a mold core cover 30, a mold core 40 and a bottom mold bottom plate 50 stacked together from top to bottom, and the mold core cover 30 sets Place around the core 40.

[0035] Two soda water inlets 11 are vertically penetrating through the upper die bottom plate 10 . The middle part of the bottom surface of the upper mold bottom plate 10 is provided with an annular waterproof wall 12 (such as Figure 9 shown).

[0036] Please refer to figure 1 , image 3 and Figure 4 A plurality of core heads 42 protrude from the top surface of the core 40 . The shape of the core head 42 can be square or circular, and the specific shape depends on the product. A steam channel 41 is disposed inside the mold core 40 . The steam channel 41 includes a st...

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Abstract

The invention discloses a foamed plastic mold which comprises an upper mold base plate, an upper mold frame, a mold core and a lower mold base plate which are sequentially overlapped with one another from top to bottom, wherein a mold cavity is enclosed by the upper mold frame and the mold core, a lower steam water chamber communicated with the outside world is enclosed by the lower mold base plate and the mold core, the mold core is internally provided with a steam flow channel, the steam flow channel comprises at least one steam inlet and a plurality of steam outlets, and the steam outlets are communicated with the mold cavity. The steam flow channel is arranged in the mold core, cooling water in the lower steam water chamber can not penetrate into the steam flow channel, and a water-steam separating device and a seal ring do not need to be additionally arranged to prevent the cooling water in the lower steam water chamber from penetrating into the steam flow channel. Therefore, the foamed plastic mold provided by the invention has the advantages of being low in production cost, easy to assemble, convenient to maintain, and high in efficiency.

Description

technical field [0001] The invention relates to a foam plastic mold. Background technique [0002] Foam plastic product packaging boxes have the characteristics of light weight, good quality, high strength, high energy absorption (buffering, shock absorption), good shock resistance, etc., and are widely used in various precision instruments, meters, electronics, electrical appliances, medical treatment, aquatic products and Packaging of vegetables and fruits. The production of packaging boxes for foam plastic products is to fill the closed mold cavity with mature expandable polystyrene beads, and heat the polystyrene beads through the mold cavity in a short period of time. At this time, the foaming agent remaining in the polystyrene volatilizes, and the polystyrene beads soften and expand when heated. Due to the limitation of the mold cavity, the expanded beads can fill all the voids and be completely bonded as a whole. After cooling and setting, demould, it is a foam pla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C44/58B29C33/10B29C33/04
Inventor 陈跃辉
Owner 龙海市永隆泡沫包装有限公司
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