Insert molding
A technology for forming bodies and fragile parts, applied in the direction of coating, etc., can solve problems such as cracks in resin components, and achieve the effect of suppressing cracks.
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no. 1 approach
[0025] use figure 1 The insert molded article of the present invention will be described. The insert molded body 1 includes a resin member 10 and an insert member 11 . The insert molding 1 refers to a member in which the resin member 10 and the insert member 11 are integrally formed, and the resin member 10 may be formed on the insert member 11 in any manner. When the resin member 10 is formed on the insert member 11, the resin member 10 and the insert member 11 are bonded together with a predetermined adhesive force. If the resin member 10 and the insert member 11 are bonded together in this way, when the insert molded body 1 is exposed to an environment with temperature changes, the expansion and contraction action of the insert member may be different from that of the resin member. Cracks in the resin member 1 are caused. As described above, if the resin member 10 and the insert member 11 are bonded together, the above-mentioned problem of cracks will occur, and this is ...
no. 2 approach
[0056] refer to Figure 4 A second embodiment of the insert molded article of the present invention will be described. Figure 4 is a diagram schematically showing an insert molded body 1A of the second embodiment, Figure 4 (a) is a stereogram, Figure 4 (b) is a cross-sectional view cut along NN, Figure 4 (c) is Figure 4 Partial enlarged view of (b). In addition, in the description after the second embodiment, the same reference numerals are attached to the same constituent elements, and the description thereof is omitted or simplified.
[0057] The difference from the first embodiment is that the insert molded article 1A of this embodiment is configured such that stress tends to concentrate on the weak portion 101A, and the weak portion 101A is a welded portion.
[0058] Such as Figure 4 As shown, the insert molded article 1A of the present embodiment includes a box-shaped resin member 10A and an insert member 11A arranged inside the box-shaped resin member 10A.
...
Embodiment 1
[0067] The following simulations were performed on an insert molded body in which a polyphenylene sulfide resin composition (“FORTRON (registered trademark) 1140A6” manufactured by Polyplastics Co., Ltd.) was used to form the resin member and iron was used as the insert member. The main physical properties of each material are shown below.
[0068] (polyphenylene sulfide resin)
[0069] Bending elastic constant: 10,010MPa
[0070] Poisson's ratio: 0.40
[0071] Linear expansion coefficient: 3.0×10 -5 (1 / °C)
[0072] (iron)
[0073] Bending elastic constant: 206,000MPa
[0074] Poisson's ratio: 0.29
[0075] Linear expansion coefficient: 1.17×10 -5 (1 / °C)
[0076] In the simulation of Example 1, suppose Figure 5 Insert molded body shown. Figure 5 is schematically showing the imaginary insert molded body in Example 1, Figure 5 (a) is a stereogram, Figure 5 (b) is a cross-sectional view taken along OO. Such as Figure 5 As shown, in the virtual insert molded bod...
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Abstract
Description
Claims
Application Information
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