CN211803286U

CN211803286U - Thick material stretching die structure

Info

Publication number: CN211803286U
Application number: CN201921493691.8U
Authority: CN
Inventors: 雷四木
Original assignee: 3jm Precision Industry Co ltd
Current assignee: 3jm Precision Industry Co ltd
Priority date: 2019-09-02
Filing date: 2019-09-02
Publication date: 2020-10-30
Anticipated expiration: 2029-09-02

Abstract

The utility model discloses a thick material drawing die structure, which consists of an upper die insert and a lower die insert, wherein the upper die insert consists of an upper die positioning insert, an upper die demoulding insert and a reverse extrusion insert; the lower die insert is composed of a lower die forming insert. In order to ensure that the thick material stretching product accurately reaches the designated small arc radius of the bottom and the side wall, the inner diameter of the reverse extrusion insert is designed to be smaller than the outer diameter of the thick material stretching preparation product, and the bottom and the side wall of the reverse extrusion insert are provided with an arc radius. In this way, the utility model discloses when can solving thick material tensile effectively, the bottom of tensile product and the difficult problem that lateral wall circular arc radius can not reach product design requirement. Achieving the specified bottom and side wall small arc radii of the stretched product.

Description

Thick material stretching die structure

Technical Field

The utility model belongs to the technical field of the tensile mould of punching press and specifically relates to a tensile mould structure of thick material is related to.

Background

The stamping and drawing products are increasingly widely used in various daily products and electronic products. At present, for a stamped and stretched product, the radius of the arc of the bottom and the side wall formed by the stretched product is related to the thickness of the stretched sheet, generally, the larger the thickness of the sheet is, the larger the radius of the arc of the bottom and the side wall is, so that for a thick material, it is difficult to achieve the specified radius of the small arc of the bottom and the side wall, or the requirement can hardly be achieved by using a general technical means or a stretching die.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem be: the utility model provides a tensile mould structure of thick material, it can solve the thick material that exists among the prior art and stretch the small circular arc radius that can't reach appointed bottom and lateral wall.

For the above purpose, the utility model adopts the following technical scheme:

the thick material stretching die structure is composed of an upper die insert and a lower die insert, wherein the upper die insert is composed of an upper die positioning insert, an upper die demolding insert and a reverse extrusion insert; the lower die insert is composed of a lower die forming insert. The inner diameter of the reverse extrusion insert is designed to be smaller than the outer diameter of the thick material stretching preparation product, and the bottom and the side wall of the reverse extrusion insert are provided with a circular arc radius.

The beneficial effects of the utility model reside in that: different from the prior art, the utility model provides a thick material drawing die structure, which comprises an upper die insert and a lower die insert, wherein the upper die insert comprises an upper die positioning insert, an upper die demoulding insert and a reverse extrusion insert; the lower die insert is composed of a lower die forming insert. In order to ensure that the thick material stretching product accurately reaches the designated small arc radius of the bottom and the side wall, the inner diameter of the reverse extrusion insert is designed to be smaller than the outer diameter of the thick material stretching preparation product, and the bottom and the side wall of the reverse extrusion insert are provided with an arc radius. In this way, the utility model discloses when can solving thick material tensile effectively, the bottom of tensile product and the difficult problem that lateral wall circular arc radius can not reach product design requirement. Achieving the specified bottom and side wall small arc radii of the stretched product.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Fig. 1 is a schematic diagram of a thick material stretching preparation product according to an embodiment of the present invention. Fig. 2 is a schematic view of a thick material stretched end product according to an embodiment of the present invention. Fig. 3 is a structural view of a cavity formed after the upper mold insert and the lower mold insert are completely closed. Fig. 4 is a partially enlarged view of a portion a in fig. 3. Fig. 5 is a diagram of a ready-to-stretch state after the mold is loaded with a product. Fig. 6 is a partially enlarged view of fig. 5 at B. Fig. 7 is a drawing completion state diagram after the mold is loaded with a product. Fig. 8 is a partial enlarged view at C in fig. 7. In the figure: 1. stretching a thick material to prepare a product; 2. stretching the thick material to obtain a final product; 31. positioning the insert on the upper die; 32. demoulding the insert on the upper die; 33. a reverse extrusion insert 4 and a lower die forming insert; r1, the arc radius of the bottom and the side wall of the thick material stretching preparation product; r2, stretching the arc radius of the bottom and the side wall of the final product by the thick material; r3, the radius of the arc of the bottom and side walls of the reverse extrusion insert 33. D1, inner diameter of the reverse extrusion insert 33; d2, outer diameter of the thick stock drawing preparation 1.

Detailed Description

In order to explain the technical content, the achieved objects and the effects of the present invention in detail, the following description is made in conjunction with the embodiments and the accompanying drawings.

As shown in fig. 1 and 2, the utility model discloses become the tensile final product 2 of thick material by the tensile preliminary product 1 of thick material after the punching press is tensile, the circular arc radius R1 of the great bottom of the tensile preliminary product 1 of thick material and lateral wall will become the circular arc radius R2 of the less bottom of the tensile final product 2 of thick material and lateral wall.

Referring to fig. 3 to 8, in order to change the larger R1 of the product into the smaller R2, a thick material drawing mold structure is provided, which is composed of an upper mold insert and a lower mold insert, wherein the upper mold insert is composed of an upper mold positioning insert 31, an upper mold release insert 32, and a reverse extrusion insert 33; the lower die insert consists of a lower die forming insert 4. Wherein the reverse extrusion insert 33 is designed in a structure having a circular arc radius R3 of the bottom and the side wall, and when the thick material drawing preparation product 1 is loaded on the mold as shown in fig. 5, after the product position is positioned on the lower mold forming insert 4 by the upper mold positioning insert 31, the upper mold release insert 32 moves downward together with the reverse extrusion insert 33, as shown in fig. 6, since the inner diameter D1 of the reverse extrusion insert 33 is smaller than the outer diameter D2 of the thick material drawing preparation product 1, and the reverse extrusion insert 33 is designed in a structure having a circular arc radius R3 of the bottom and the side wall, the metal of the side wall of the thick material drawing preparation product 1 is extruded to flow downward, forcing the circular arc radius R1 of the bottom and the side wall of the thick material drawing preparation product 1 to be deformed into a designated smaller circular arc radius R2 of the thick material drawing final product 2.

The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.

Claims

1. A thick material drawing die structure comprises an upper die insert and a lower die insert, wherein the upper die insert comprises an upper die positioning insert, an upper die demolding insert and a reverse extrusion insert; the lower die insert is composed of a lower die forming insert and is characterized in that: the inner diameter of the reverse extrusion insert is designed to be smaller than the outer diameter of the thick material drawing preparation product.

2. The thick stock drawing die structure of claim 1, wherein: and the bottom and the side wall of the reverse extrusion insert are provided with a circular arc radius.