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Secondary mold pressing method for foamed beads

A technology of foaming beads and secondary molding, which is applied to household appliances, other household appliances, household components, etc., can solve the problems of uneven heating, inconsistent degree of fusion, and uneven density of shoes, and achieve smooth surface , the effect of improving the aesthetics

Pending Publication Date: 2022-05-27
福建鑫瑞新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in the production process of shoe midsoles, the bead material is generally put into the mold for mold clamping and heating, heated and formed, cooled, and finally the formed shoe midsole is taken out; , the bead material inside the midsole of the shoe and the outside are heated unevenly, and the degree of fusion is inconsistent. When the midsole of the shoe is taken out, it is easy to cause excessive fusion on the outside and insufficient fusion on the inside. The overall density of the shoe is different inside and outside. The production quality of the midsole of the shoe cannot be guaranteed
At the same time, the shoe midsole produced by heating and forming only once has obvious graininess on the surface of the shoe midsole, and the aesthetics is not good, which affects the user experience

Method used

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  • Secondary mold pressing method for foamed beads
  • Secondary mold pressing method for foamed beads
  • Secondary mold pressing method for foamed beads

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Please refer to figure 1 As shown, a method for secondary molding of expanded beads includes:

[0047] S0. Perform pre-blowing operation: after emptying the impurities in the first mold, blow steam at 60-80°C for 3-5s into the shoe mold cavity of the first mold for preheating;

[0048] S1. After the foamed bead material is put into the first mold, the steam forming operation is performed to obtain a forming midsole, and the process specifically includes the following:

[0049] The S1 includes:

[0050] S11. Perform a mold clamping operation: the first mold includes a fixed fixed mold and a movable transfer mold;

[0051] Control the power system to drive the moving mold to move in the direction of the fixed mold to close the mold, and control the gap between the moving mold and the fixed mold after mold clamping to be 1-3mm;

[0052] S12. Execute the injection operation: use the injection gun to inject foam beads into the cavity of the shoe mold between the fixed mol...

Embodiment 2

[0063] The test data (seeing Table 1) of the shoe midsole produced by the technology of the present invention and the test data (seeing Table 2) of the shoe midsole produced by the prior art are compared, as follows:

[0064]

[0065] Table 1

[0066]

[0067] Table 2

[0068] The density index of the midsole of qualified shoes is 0.09-0.14g / cm 3 , with reference to Table 1 and Table 2, N represents unqualified, P represents qualified, the shoe midsole produced based on the present invention can well meet its density requirements, while the shoe midsole produced by the application of the prior art cannot fully meet its requirements. density requirements.

[0069] refer to figure 2 , image 3 and Figure 4 , figure 2 In order to apply the shoe midsole produced by the prior art, since the sintering degree of the foamed beads of the shoe midsole is not easy to control during the production process, the foamed beads on the surface of the shoe midsole cannot be well s...

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Abstract

The invention relates to a foamed bead secondary mold pressing method which comprises the following steps: S1, after a foamed bead material is put into a first mold, performing steam forming operation to obtain a formed insole; s2, executing secondary mold pressing operation: putting the formed insole into a second mold, closing the mold, and preheating the mold pressing environment to 60-100 DEG C; the second mold is placed in the two mold pressing environments to be heated, the mold pressing environments are heated to 120-140 DEG C, and the heating time is 1-2 min; after heating is completed, the second mold is taken out of the mold pressing environment and transferred into a cooling environment for cold water cooling, and a shoe insole finished product is taken out after cooling is completed. According to the forming device, secondary mold pressing operation can be conducted on the formed insole, that is, secondary heating and cooling are conducted on the formed insole, so that the produced shoe insole product is flat and smooth in surface and basically free of granular sensation, and the attractiveness is greatly improved.

Description

technical field [0001] The invention relates to the technical field of shoe production, in particular to a method for secondary molding of foam beads. Background technique [0002] At present, in the production process of shoe midsole, the bead material is generally put into the mold for mold clamping and heating, and then cooled after heating and forming, and finally the formed shoe midsole is taken out; , the bead material inside the midsole of the shoe and the outside are unevenly heated, and the degree of fusion is inconsistent. When the midsole of the shoe is taken out, it is easy to cause excessive fusion on the outside and insufficient fusion on the inside. The overall density of the shoe is different inside and outside. The production quality of the shoe midsole cannot be guaranteed. At the same time, the midsole of the shoe produced by only one heating molding has obvious graininess on the surface of the midsole of the shoe, and the aesthetics is not good, which af...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C44/34B29C44/44B29C44/02B29C44/58B29C44/60B29C44/42B29L31/50
CPCB29C44/445B29C44/3426B29C44/3419B29C44/02B29C44/58B29C44/60B29C44/42B29L2031/504
Inventor 潘涵遇徐诗德
Owner 福建鑫瑞新材料科技有限公司