Die with undercut exit structure with bore sidewall

Abstract

The invention discloses a mold provided with a disengagement structure for an undercut on the side wall of an inner hole. The mold is used for forming a product of which the side wall of the inner hole is provided with the undercut. The mold comprises an upper fixing plate, a female mold plate, a male mold plate and a male mold supporting plate which are arranged in sequence. The mold further comprises a sliding insert, a first insert, a second insert, a third insert and a shifting lever, wherein one end of the sliding insert is provided with a forming part used for forming the undercut, and the sliding insert is provided with a sliding through hole; the first insert is used for forming the inner hole and internally provided with a first through hole, the sliding insert is arranged in the first insert, and the forming part of the sliding insert penetrates out from one side of the first insert; the second insert is sleeved with the first insert, abuts against the lower portion of the sliding insert, and is internally provided with a second through hole; and the third insert is arranged under the second insert and internally provided with a third through hole. The effect that the inner hole of a formed product is free of broken lines, and disengagement of the undercut arranged on the side wall of the inner hole is realized can be achieved.

Description

[0001]

Technical field

[0002] The invention relates to a mold structure, in particular to a mold with an undercut exit structure on the side wall of an inner hole.

[0003]

Background technique

[0004] see figure 1 , figure 1 It is a schematic diagram of the structure of a product. As shown in the figure, the side wall of the inner hole 101 of the product 100 (such as a shaft product) has an undercut 102 .

[0005] Since the inner hole 101 of the product 100 cannot have a folding line after molding, and the undercut 102 must be withdrawn, the existing mold cannot be used to achieve this purpose.

[0006] In view of this, it is necessary to develop a mold with an undercut exit structure on the side wall of the inner hole to solve the above problems.

[0007]

Content of invention

[0008] Therefore, the object of the present invention is to provide a mold with an undercut exit structure on the side wall of the inner hole, which can satisfy the requirement that the i...

Examples

Embodiment Construction

[0028] Please refer to figure 2 , image 3 ,in, figure 2 A schematic cross-sectional structure showing the clamping state of the pull-out push plate structure of the mold of the present invention, image 3 draw figure 2 Schematic diagram of the three-dimensional cross-sectional structure of the middle part of the structure.

[0029] In order to achieve the above object, the mold of the present invention has an undercut exit structure on the side wall of the inner hole, which molds a product 100 with an undercut 102 on the side wall of the inner hole 101 (please refer to figure 1 ), the mold includes an upper fixed plate 200, a female template 201, a male template (not shown in the figure), and a male mold carrier plate 202 set up in sequence, and the mold also includes:

[0030] Sliding insert 203, one end of which has a forming portion for molding the undercut, and the sliding insert 203 has a sliding through hole;

[0031] The first inlet 204 forms the inner hole 101...

[0001]

Technical field

[0002] The invention relates to a mold structure, in particular to a mold with an undercut exit structure on the side wall of an inner hole.

[0003]

Background technique

[0004] see figure 1 , figure 1 It is a schematic diagram of the structure of a product. As shown in the figure, the side wall of the inner hole 101 of the product 100 (such as a shaft product) has an undercut 102 .

[0005] Since the inner hole 101 of the product 100 cannot have a folding line after molding, and the undercut 102 must be withdrawn, the existing mold cannot be used to achieve this purpose.

[0006] In view of this, it is necessary to develop a mold with an undercut exit structure on the side wall of the inner hole to solve the above problems.

[0007]

Content of invention

[0008] Therefore, the object of the present invention is to provide a mold with an undercut exit structure on the side wall of the inner hole, which can satisfy the requirement that the i...

Examples

Embodiment Construction

[0028] Please refer to figure 2 , image 3 ,in, figure 2 A schematic cross-sectional structure showing the clamping state of the pull-out push plate structure of the mold of the present invention, image 3 draw figure 2 Schematic diagram of the three-dimensional cross-sectional structure of the middle part of the structure.

[0029] In order to achieve the above object, the mold of the present invention has an undercut exit structure on the side wall of the inner hole, which molds a product 100 with an undercut 102 on the side wall of the inner hole 101 (please refer to figure 1 ), the mold includes an upper fixed plate 200, a female template 201, a male template (not shown in the figure), and a male mold carrier plate 202 set up in sequence, and the mold also includes:

[0030] Sliding insert 203, one end of which has a forming portion for molding the undercut, and the sliding insert 203 has a sliding through hole;

[0031] The first inlet 204 forms the inner hole 101...

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