CN219378461U

CN219378461U - Cold drawing machine external mold

Info

Publication number: CN219378461U
Application number: CN202320857780.6U
Authority: CN
Inventors: 张云津; 何佳超; 李世洪; 黄敏; 侯真良
Original assignee: Sinoma Science & Technology Chengdu Co ltd
Current assignee: Sinoma Science & Technology Chengdu Co ltd
Priority date: 2023-04-17
Filing date: 2023-04-17
Publication date: 2023-07-21
Anticipated expiration: 2033-04-17

Abstract

The utility model relates to the technical field of cold drawing machines, and provides an outer die of a cold drawing machine, which aims to solve the problem that a steel pipe damages an inner layer of an outer die; a guide mechanism is arranged on one side of the outer die, which is close to the inner die, and is used for guiding the steel pipe to the center of the outer die; the steel pipe can be prevented from being bumped into the inner layer of the outer die, damage is caused to the inner layer of the outer die, the service life of the inner layer of the outer die is prolonged, and the economic benefit of enterprises is improved.

Description

Cold drawing machine external mold

Technical Field

The utility model relates to the technical field of cold drawing machines, in particular to an outer die of a cold drawing machine.

Background

The cold drawing machine tool for producing the traditional seamless steel tube comprises a traction device and a cold drawing machine die, wherein the cold drawing machine die comprises an outer die and an inner die, and a die cavity for processing the wall and the diameter of the steel tube is formed between the outer die and the inner die.

Specifically, in the seamless steel pipe cold drawing process, the steel pipe is divided into wall reduction and diameter expansion and wall reduction and diameter reduction, wherein the two processes are mainly different in the wall reduction and diameter expansion processing mode, the inner die bears larger deformation resistance in the wall reduction process when the wall reduction and diameter expansion are carried out, and the outer die is the opposite.

Wherein, cold drawing machine external mold includes inlayer and skin, and the inlayer is the place that the steel pipe extrusion passed through, and the steel pipe material loading is collided the inlayer easily when passing through inlayer front end, and then causes the damage. And because the material of inlayer is special material, the price is high, in the production process, if the steel pipe causes the damage to outer mould inlayer, then causes unavoidable loss to the enterprise, greatly reduced the economic benefits of enterprise.

Disclosure of Invention

The utility model aims to provide a cold drawing machine outer die which can prevent a steel pipe from colliding with an inner layer of the outer die to damage the inner layer of the outer die, prolong the service life of the inner layer of the outer die and improve the economic benefit of enterprises.

The embodiment of the utility model is realized by the following technical scheme:

the outer die of the cold drawing machine comprises an outer die, wherein the outer die comprises an inner layer and an outer layer, a cushion block is arranged on the surface of the inner layer, and the cushion block extends to the outer end face of the inner layer;

and one side of the outer die, which is close to the inner die, is provided with a guide mechanism, and the guide mechanism is used for guiding the steel pipe to the center of the outer die.

Further, the guide mechanism comprises a first guide piece and a second guide piece, and the first guide piece and the second guide piece are respectively arranged in different directions outside the outer die; and a through passage for the steel pipe to pass through is formed between the first guide piece and the second guide piece.

Further, the first guide piece comprises guide columns symmetrically arranged on the upper side and the lower side of the outer die, and the guide columns are detachably connected with the outer die.

Further, the opposite side surfaces of the two guide posts are provided with gaskets.

Further, a supporting table is symmetrically arranged at the upper end and the lower end of the side face of the outer die, a plurality of limiting holes are formed in the supporting table, and a plurality of limiting columns capable of penetrating through the limiting holes are arranged at one end of each guide column.

Further, the second guide piece comprises a plurality of positioning wheels symmetrically arranged at the left side and the right side of the outer die.

Further, the distance between the positioning wheels on the left side and the right side is gradually reduced from the inner die to the outer die.

Further, the distance between at least two pairs of positioning wheels near the left and right sides of the outer mold side surface is consistent with the outer diameter of the outer mold.

The technical scheme of the embodiment of the utility model has at least the following advantages and beneficial effects:

when the steel pipe guiding device is used, the inner die sends the steel pipe to the outer die, and before the steel pipe is sent to the outer die, the steel pipe is initially guided by the two guiding columns of the first guiding piece, so that the steel pipe passes between the two guiding columns, and preferably, the distance between the two guiding columns is slightly larger than the outer diameter of the steel pipe; then the direction of the steel pipe is corrected again under the guiding action of a plurality of positioning wheels of the second guiding pieces at two sides, so that the steel pipe advances along the center of the outer die to the outer die direction; when the steel pipe port reaches the side surface of the inner layer of the outer mold, the inner layer can be buffered and protected due to the cushion block arranged on the surface of the inner layer, the steel pipe is prevented from being bumped into the inner layer of the outer mold under the dual actions of the guide mechanism and the cushion block, the inner layer of the outer mold is damaged, the service life of the inner layer of the outer mold is prolonged, and the economic benefit is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a side view of an outer mold of a cold drawing machine provided by an embodiment of the present utility model;

FIG. 2 is a top view of an outer mold of a cold drawing machine according to an embodiment of the present utility model;

icon: the device comprises a 1-outer die, a 11-outer layer, a 12-inner layer, a 121-cushion block, a 13-supporting table, a 2-first guide piece, a 21-guide column, a 211-gasket, a 212-limit column and a 3-positioning wheel.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Example 1

A cold drawing machine outer die, comprising an outer die 1, wherein the outer die 1 comprises an inner layer 12 and an outer layer 11, a cushion block 121 is arranged on the surface of the inner layer 12, and the cushion block 121 extends to the outer end surface of the inner layer 12; and a guide mechanism is arranged on one side of the outer die 1 close to the inner die and is used for guiding the steel pipe to the center of the outer die 1.

In this embodiment, the guiding mechanism includes a first guiding member 2 and a second guiding member, where the first guiding member 2 and the second guiding member are respectively disposed in different directions outside the outer mold 1; and a through passage for the steel pipe to pass through is formed between the first guide piece 2 and the second guide piece.

In this embodiment, the first guide member 2 includes guide posts 21 symmetrically disposed on the upper and lower sides of the outer mold 1, and the guide posts 21 are detachably connected to the outer mold 1; specifically, a supporting table 13 is symmetrically arranged at the upper end and the lower end of the side surface of the outer mold 1, a plurality of limiting holes are formed in the supporting table 13, a plurality of limiting columns 212 capable of penetrating through the limiting holes are formed in one end of the guide column 21, the limiting columns 212 are fixed to the bottom of the supporting table 13 through fasteners such as nuts, the guide column 21 is convenient to replace, and stability of the guide column 21 can be maintained.

In this embodiment, the opposite sides of the two guide posts 21 are provided with gaskets 211, such as steel pipes, which are contacted and guided, so that the gaskets 211 can protect the steel pipes, i.e. the sides of the guide posts 21. The pad 211 and the pad 121 may be made of soft materials such as rubber.

In this embodiment, the second guiding member includes a plurality of positioning wheels 3 symmetrically disposed on the left and right sides of the outer mold 1, and the distance between the plurality of positioning wheels 3 on the left and right sides gradually decreases from the inner mold to the outer mold 1, so that the advancing path of the steel pipe can be adaptively protected and guided.

In this embodiment, the distance between at least two pairs of positioning wheels 3 near the left and right sides of the side surface of the outer mold 1 is identical to the outer diameter of the outer mold 1, so that the steel pipe smoothly enters the inner layer 12 of the outer mold 1 along the center of the outer mold 1.

When the steel pipe guiding device is used, the inner die sends the steel pipe to the outer die 1, and before the steel pipe is sent to the outer die 1, the steel pipe is initially guided by the two guiding columns 21 of the first guiding piece 2, so that the steel pipe passes between the two guiding columns, and preferably, the distance between the two guiding columns 21 is slightly larger than the outer diameter of the steel pipe; then the direction of the steel pipe is corrected again under the guiding action of a plurality of positioning wheels 3 of the second guiding parts at the two sides, so that the steel pipe advances towards the outer mold 1 along the center of the outer mold 1; when the end opening of the steel pipe reaches the side surface of the inner layer 12 of the outer die 1, the cushion block 121 is arranged on the surface of the inner layer 12, so that the inner layer 12 can be buffered and protected, the steel pipe is prevented from being bumped into the inner layer 12 of the outer die 1 under the double functions of the guide mechanism and the cushion block 121, the inner layer 12 of the outer die 1 is damaged, the service life of the inner layer 12 of the outer die 1 is prolonged, and the economic benefits of enterprises are improved.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The cold drawing machine outer die comprises an outer die, wherein the outer die comprises an inner layer and an outer layer, and is characterized in that a cushion block is arranged on the surface of the inner layer and extends to the outer end surface of the inner layer;

2. The outer die of the cold drawing machine according to claim 1, wherein the guide mechanism comprises a first guide piece and a second guide piece, and the first guide piece and the second guide piece are respectively arranged in different directions outside the outer die; and a through passage for the steel pipe to pass through is formed between the first guide piece and the second guide piece.

3. The outer die of the cold drawing machine according to claim 2, wherein the first guide member comprises guide posts symmetrically arranged on the upper side and the lower side of the outer die, and the guide posts are detachably connected with the outer die.

4. A cold drawing machine outer die as claimed in claim 3, wherein opposed sides of both said guide posts are provided with shims.

5. The outer die of the cold drawing machine according to claim 3, wherein a supporting table is symmetrically arranged at the upper end and the lower end of the side face of the outer die, a plurality of limiting holes are formed in the supporting table, and a plurality of limiting columns capable of penetrating through the limiting holes are arranged at one end of the guide column.

6. The outer die of the cold drawing machine according to claim 2, wherein the second guide member includes a plurality of positioning wheels symmetrically disposed at left and right sides of the outer die.

7. The outer mold of the cold drawing machine according to claim 6, wherein the distance between the plurality of positioning wheels on the left and right sides is gradually reduced from the inner mold toward the outer mold.

8. The outer die of the cold drawing machine of claim 7 wherein the distance between at least two pairs of positioning wheels adjacent the left and right sides of the outer die side faces is consistent with the outer diameter of the outer die.