CN213469124U

CN213469124U - Cold extrusion sizing die combined die core structure

Info

Publication number: CN213469124U
Application number: CN202021973535.4U
Authority: CN
Inventors: 谢向君; 伍铁忠; 王盛
Original assignee: Hongji Weiye Suzhou Auto Parts Co ltd
Current assignee: Hongji Weiye Suzhou Auto Parts Co ltd
Priority date: 2020-09-11
Filing date: 2020-09-11
Publication date: 2021-06-18
Anticipated expiration: 2030-09-11

Abstract

The utility model discloses a cold extrusion sizing die combination mold core structure, including mould body, upper die benevolence, lower mould benevolence and die cavity, it installs to go up the mould benevolence and the lower mould benevolence the upper portion of mould body, upper die benevolence with the lower mould benevolence adopts split type contact to connect, upper die benevolence is installed the top of lower mould benevolence, the inside of upper die benevolence and lower mould benevolence is equipped with the die cavity, upper die benevolence is the through-hole section of whole mold core, lower mould benevolence is the chamfer section of whole mold core. The utility model relates to a cold extrusion sizing die combination mold core structure carries out split type institutional advancement with mould benevolence, and split type structure separates the part that the atress is little and stress concentration's part, and the material of two mould benevolence can distinguish during the mould adds man-hour, makes things convenient for alloy material's selection, lets to make the mould more nimble, and mould life is higher, has also practiced thrift the cost simultaneously.

Description

Cold extrusion sizing die combined die core structure

Technical Field

The utility model belongs to car hardware cold extrusion mould, concretely relates to cold extrusion sizing die combination mold core structure.

Background

In recent years, with the rapid development of economy in China, the automobile industry in China, particularly the car industry, drives a rapidly-developed rail, and cars gradually enter families of vast common people of thousands of households to become vehicles frequently used by people in daily life.

Because many spare parts of the automotive industry belong to the metal finished piece, consequently, metal forming process obtains wide application in the automotive industry, in order to satisfy the vigorous demand of car, each big car manufacturer constantly enlarges the production output of car, continuously releases various car brands, and car spare and accessory part production needs the automation increasingly more and more, has derived the cold extrusion molding technique of multistation from this, the utility model discloses mainly to the improvement of the cold extrusion molding in-process (1) (2) station mould structure.

As shown in fig. 1, by collecting the damage of the previous scrapped mold, the mold a is found to be the core of the whole mold, and almost more than 95% of the scrapped reasons are from the damage at a, which mainly comes from two aspects: firstly, the die is a chamfer die, and the stress is concentrated at the chamfer angle; secondly, the die applies larger impact force to the blank in order to ensure the extrusion plumpness of the blank at the station.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims at solving the defects in the prior art and providing a combined mold core structure of a cold extrusion sizing die.

The technical scheme is as follows: a cold extrusion sizing die combination mold core structure, including mould body, last mould benevolence, lower mould benevolence and die cavity, it installs to go up mould benevolence and lower mould benevolence the upper portion of mould body, go up mould benevolence with the lower mould benevolence adopts split type contact to connect, it installs to go up mould benevolence the top of lower mould benevolence, the inside of going up mould benevolence and lower mould benevolence is equipped with the die cavity, it is the through-hole section of whole mould to go up mould benevolence, lower mould benevolence is the chamfer section of whole mold core.

Furthermore, the upper die core is made of alloy materials.

Furthermore, the lower die core is made of alloy materials.

Furthermore, the number of the upper mold core or the lower mold core is at least one.

Furthermore, four exhaust grooves are radially arranged on the binding surface of the upper die core and the lower die core; four exhaust grooves are axially formed in the fitting conical surface of the upper die core and the die body, and the radial exhaust grooves are communicated with the axial exhaust grooves.

Furthermore, a plurality of exhaust holes are formed in the upper surface of the die body and communicated with the axial exhaust groove.

Furthermore, press fit allowance is arranged among the die body, the upper die core and the lower die core.

Has the advantages that: the utility model has the advantages as follows:

(1) the split type mold core alloy is convenient to process, the mold core has the same diameter and shorter length, the mold strength is higher, the mold is more durable, and the service life of the mold is prolonged in a single shape;

(2) the split structure separates the part with small stress from the part with concentrated stress, and the materials of the two die cores can be distinguished during die processing, so that the selection of alloy materials is convenient, the die can be more flexibly manufactured, the service life of the die is longer, and the cost is saved;

(3) the upper die core is provided with the exhaust groove, the punching die can obtain full blanks without applying larger impact force, and the service life of the lower die core is greatly prolonged due to the change.

Drawings

FIG. 1 is a schematic view of a prior art mold construction;

FIG. 2 is a schematic view of the mold structure of the present invention;

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a schematic view of the upper mold core of FIG. 2;

fig. 5 is a schematic view of the lower mold core in fig. 2.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

As shown in fig. 2 to 5, a cold extrusion sizing die combined die core structure comprises a die body 1, an upper die core 2, a lower die core 3 and a die cavity 4, wherein the upper die core 2 and the lower die core 3 are installed on the upper portion of the die body 1, the upper die core 2 and the lower die core 3 are in split type contact connection, the upper die core 2 is installed above the lower die core 3, the die cavity 4 is arranged inside the upper die core 2 and the lower die core 3, the upper die core 2 is a through hole section of the whole die core, and the lower die core 3 is a chamfer section of the whole die core. The split type mold core alloy is convenient to process, the same diameter of the mold core is shorter, the mold strength is higher, the mold is more durable, and the service life of the mold is prolonged in a single appearance.

Through split type mould design, when vulnerable department 301 is damaged, only need to change the lower mould benevolence can, need not to change the upper die benevolence to the cost has been practiced thrift.

As a further optimization of the above embodiment:

in this embodiment, preferably, the upper mold core 2 is made of an alloy material; the lower die core 3 is made of alloy materials. In the embodiment, the mold cores are designed in a split mode, the alloy materials of the mold cores can be selected to be the same or different, the split structure separates the part with small stress from the part with concentrated stress, the materials of the two mold cores can be separated during mold processing, the selection of the alloy materials is facilitated, the mold can be manufactured more flexibly, and meanwhile, the cost is also saved.

In this embodiment, the number of the actual mold cores is preferably not limited to two mold cores in this embodiment, and a plurality of split mold core structures may be designed according to actual conditions, so that the strength is higher, the rejection rate is low, and different materials may be selected.

In this embodiment, preferably, four air exhaust grooves are radially formed on the joint surface of the upper mold core 2 and the lower mold core 3; four exhaust grooves are axially arranged on the attaching conical surface of the upper die core and the die body 1, and the radial exhaust grooves are communicated with the axial exhaust grooves. Further, the upper surface of the die body 1 is provided with a plurality of exhaust holes 201, the exhaust holes 201 are communicated with the second exhaust groove, and the number of the exhaust holes 201 can be selected according to actual conditions and is not less than four.

Exhaust grooves are formed between the die core and between the die core and the die, so that the full blank can be obtained by the punching die without applying larger impact force, and the service life of the die core is greatly prolonged by the change.

In this embodiment, preferably, press-fit allowances are provided among the mold body 1, the upper mold core 2, and the lower mold core 3.

The utility model adopts split type mold core alloy to facilitate processing, the mold core has the same diameter and shorter length, the mold has higher strength and is more durable, and the service life of the mold is prolonged from the aspect of single appearance; the split structure separates the part with small stress from the part with concentrated stress, and the materials of the two die cores can be distinguished during die processing, so that the selection of alloy materials is convenient, the die can be made more flexibly, and the cost is saved; the upper die core is provided with the exhaust groove, the punching die can obtain full blanks without applying larger impact force, and the service life of the die core is greatly prolonged due to the change.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments, and although the present invention has been disclosed with the preferred embodiments, it is not limited to the present invention, and any skilled person in the art can make some modifications or equivalent embodiments without departing from the scope of the present invention, but all the technical matters of the present invention are within the scope of the present invention.

Claims

1. The utility model provides a cold extrusion sizing die combination mold core structure which characterized in that: including mould body (1), go up mould benevolence (2), lower mould benevolence (3) and die cavity (4), it installs to go up mould benevolence (2) and lower mould benevolence (3) the upper portion of mould body (1), go up mould benevolence (2) with lower mould benevolence (3) adopt split type contact to connect, it installs to go up mould benevolence (2) the top of lower mould benevolence (3), the inside of going up mould benevolence (2) and lower mould benevolence (3) is equipped with die cavity (4), it is the through-hole section of whole mold core to go up mould benevolence (2), lower mould benevolence (3) are the chamfer section of whole mold core.

2. The combined core structure of the cold extrusion sizing die of claim 1, wherein: the upper die core (2) is made of alloy materials.

3. The combined core structure of the cold extrusion sizing die of claim 1, wherein: the lower die core (3) is made of alloy materials.

4. The combined core structure of the cold extrusion sizing die of claim 1, wherein: the number of the upper mold core (2) or the lower mold core (3) is at least one.

5. The combined core structure of the cold extrusion sizing die of claim 1, wherein: four exhaust grooves are radially arranged on the binding surface of the upper die core (2) and the lower die core (3); four exhaust grooves are axially arranged on the attaching conical surface of the upper die core and the die body (1), and the radial exhaust grooves are communicated with the axial exhaust grooves.

6. The combined core structure of the cold extrusion sizing die of claim 5, wherein: the die is characterized in that a plurality of exhaust holes (201) are formed in the upper surface of the die body (1), and the exhaust holes (201) are communicated with the axial exhaust grooves.

7. The combined core structure of the cold extrusion sizing die of claim 1, wherein: the die comprises a die body (1), an upper die core (2) and a lower die core (3), wherein press fit allowance is arranged among the die body, the upper die core and the lower die core.