Method and device for injection molding

A technology of injection molding and equipment, applied in the direction of coating, etc., can solve the problem of time-consuming partition 510, and achieve the effect of improving productivity

Inactive Publication Date: 2006-01-25
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] However, when the injection pressure of the silicone resin is lowered, it takes time to

Method used

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  • Method and device for injection molding
  • Method and device for injection molding
  • Method and device for injection molding

Examples

Experimental program
Comparison scheme
Effect test

Example

[0154] Second embodiment

[0155] Such as Picture 9 As shown, the separator 115 is manufactured by covering the circumferential portion 117 of the separator body 116 with a seal 118 made of silicone rubber.

[0156] The partition 115 of the second embodiment is figure 2 The separator 15 of the first embodiment shown has the through hole 30 in the circumferential portion 17 removed, except that its structure is the same as that of the separator 15 of the first embodiment.

[0157] By molding the front side molding layer (the front side area of ​​the sealing member 118) 132 onto the front surface 131 of the partition body 116, and molding the rear side molding layer (the rear side area of ​​the sealing member 118) 134 to the partition On the rear surface 133 of the plate body 116, a seal 118 is formed at the circumferential portion 117 of the partition body 116.

[0158] The circumferential portion 117 is covered by the sealing member 118, and the edges of the hydrogen channel, th...

Example

[0217] The third embodiment

[0218]As shown in FIG. 13, the injection molding equipment 200 has: a first mold 201 that can move up and down as shown by the arrow; a second mold 202 that is arranged under the first mold 201 and can be clamped onto the first mold 201; injection A device 205 connected to the first gate 203 in the first mold 201 and the second gate 204 in the second mold 202; and a control device 206 for opening and closing the first and second gates 203, 204 .

[0219] The first mold 201 has a front cavity surface 150 on its side facing the second mold 202. When the first mold 201 and the second mold 202 are clamped together and the partition body 116 is clamped between the first mold 201 and the second mold 202, the front cavity surface 150 and the front face 131 of the partition body 116 form a front Side cavity 151 (see Figure 14B ).

[0220] In addition, the first mold 201 has a first gate 203 opening at the front cavity surface 150 and a first pressure sensor ...

Example

[0271] Fourth embodiment

[0272] Such as Figure 18 As shown, the injection molding equipment 340 is composed of a first mold 341, an injection device 342, a base frame 343, a movement device 348, and a second and third molds 346, 347. The first mold 341 is set to rise as shown by the arrow. When descending, the injection device 342 is set on the first mold 341, the bottom frame 343 is set below the first mold 341, the movement device 348 is used to make the slider 345 slide along the guide rail 344 of the bottom frame 343, and the second and The third molds 346 and 347 are mounted on the sliding member 345.

[0273] The moving device 348 is composed of a guide rail 344 provided on the base frame 343, a sliding member 345, and an actuating member (not shown) such as an air cylinder. The sliding member 345 is installed to slide along the guide rail 344 in the direction indicated by the arrow. , And the actuating member is used to make the sliding member 345 slide along the guide r...

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Abstract

A method for injection molding comprises the following steps: a step of preparing a first mold (41), a second mold (46), and a third mold (47), a step of sandwiching a separator single body (16) by the first mold (41) and the second mold (46), a step of injecting silicone rubber (59) into a front-side cavity (50) through a gate (52) to form a front-side formed layer (32), a step of replacing the second mold (46) with the third mold (47) while the front-side formed layer (32) is soft, and a step of penetrating the front-side formed layer (32) by injection pressure of the silicone rubber (59) injected through the gate (52), filling the silicone rubber (59) into a back-side cavity (63) through a penetration hole (30), and forming a back-side formed layer (34).

Description

technical field [0001] The present invention relates to an injection molding method and apparatus, and in particular to an injection molding method and apparatus for molding a molding layer, such as a seal, to both sides of a plate-shaped element. Background technique [0002] Separators for fuel cells have seals made of silicone rubber molded around them. For such a seal, for example, Japanese Patent Laid-Open Publication No. 11-309746 (JP-A-11-309746), "Method for Manufacturing Silicone Resin-Metal Composite" is known. The manufacturing method of this prior art will be described based on FIG. 28 . [0003] With the injection molding apparatus 500 being closed, a partition body (ie, a plate-shaped member) 503 is inserted between the fixed mold 501 and the movable mold 502 , and a cavity 504 is formed by the fixed mold 501 and the movable mold 502 . [0004] Molten silicone resin is injected into cavity 504 as indicated by the arrow. In this way, the front side seal (i.e....

Claims

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Application Information

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IPC IPC(8): B29C45/14B29C45/26B29K105/20
CPCB29C2045/167
Inventor 木村实基彦河内慎弥安藤敬祐西山忠志小此木泰介圆城寺直之
Owner HONDA MOTOR CO LTD
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