CN106180228A - A kind of cold-drawing-pipe device - Google Patents
A kind of cold-drawing-pipe device Download PDFInfo
- Publication number
- CN106180228A CN106180228A CN201610789052.0A CN201610789052A CN106180228A CN 106180228 A CN106180228 A CN 106180228A CN 201610789052 A CN201610789052 A CN 201610789052A CN 106180228 A CN106180228 A CN 106180228A
- Authority
- CN
- China
- Prior art keywords
- core bar
- steel pipe
- cold
- mold
- rear plug
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
- B21C1/22—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles
- B21C1/24—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles by means of mandrels
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Extraction Processes (AREA)
Abstract
The invention discloses a kind of cold-drawing-pipe device, including inner mold, outer mold, nut, core bar and rear plug, described outer mold is placed on the outer surface of described core bar, described inner mold is arranged on one end of described core bar, and connecting fixing with described nut, described rear plug is placed on the other end of described core bar and encloses outward described core bar.Inner mold, outer mold, core bar and rear plug all with the steel pipe central coaxial line needing cold-drawn, it is simple to alignment draw steel pipe, improve degree of accuracy.The present invention effectively limits the amplitude that core bar is the most travelling in steel pipe in process of tube plug drawing mill, thus prevent or reduces the expansion of wall thickness deviation, improves the qualification rate of product.
Description
[technical field]
The present invention relates to steel pipe's production equipment technical field, particularly to a kind of cold-drawing-pipe device.
[background technology]
In traditional cold-drawing-pipe device, to be integrally fixed at the center position of steel pipe motionless for core bar and inner mold, but in reality
In process of tube plug drawing mill, due to inequalities such as thickness of steel pipe size, concentricity, linearitys, cause core bar and Nei Mo pipe diameter to
Travelling so that steel pipe same cross section wall thickness deviation expands, tube bending degree increases, and bends excessive steel pipe and is entering the external mold current political situation
Portion's stress is excessive, and crooked position cannot normally enter external mold, causes crooked position wall thickness to increase, even ruptures.Core bar and Nei Mo
Travelling amplitude is the biggest, and the cold-drawn quality of steel pipe is the poorest.Such as: the regular appearance when draw Φ 356*8 (external diameter * wall thickness) steel pipe
Locally the wall thickness deviation of about 1m is big or the problem of crackle, causes steel pipe to be scrapped.
[summary of the invention]
In view of this, for overcoming the deficiencies in the prior art, the present invention provides a kind of cold-drawing-pipe device, increases on the original basis
If rear plug, effectively limit the amplitude that core bar is the most travelling in steel pipe in process of tube plug drawing mill, thus prevent or reduce wall
The expansion of thick deviation, improves the qualification rate of product.
For achieving the above object, technical scheme is as follows:
A kind of cold-drawing-pipe device, including inner mold, outer mold, nut, core bar and rear plug, described outer mold is placed on described
The outer surface of core bar, described inner mold is arranged on one end of described core bar, and connects with described nut fixing, described rear plug set
In the other end of described core bar and enclose outward described core bar, reduce the gap that described core bar is the most travelling.
It is also preferred that the left described inner mold, outer mold, core bar and rear plug all with need the steel pipe central coaxial line of cold-drawn, just
In alignment draw steel pipe, improve degree of accuracy.
Further, the afterbody of described rear plug is provided with step, it is to avoid all pushed by described rear plug in process of tube plug drawing mill
Cannot take out in needing the steel pipe of cold-drawn.
During use, it would be desirable to the steel pipe of cold-drawn at the uniform velocity pushes to be installed in the cold-drawing-pipe device fixed, at inner mold with outer
The extruding compacted under of mould, reaches the steel pipe sizes needed；Meanwhile, core bar remains and steel under the guide-localization of rear plug
Tube hub coaxial line, it is ensured that the Forming Quality of steel pipe.
The invention has the beneficial effects as follows, by the rear stopper structure of design, effectively limit core bar in process of tube plug drawing mill and exist
Need amplitude the most travelling in the steel pipe of cold-drawn, thus prevent or reduce the expansion of wall thickness deviation, improve the conjunction of product
Lattice rate.
[accompanying drawing explanation]
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to
Other accompanying drawing is obtained according to these accompanying drawings.
Fig. 1 is the sectional view of present configuration.
In figure, 1, nut, 2, inner mold, 3, outer mold, 4, steel pipe, 5, core bar, 6, rear plug, 7, step.
[detailed description of the invention]
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
With reference to Fig. 1, a kind of cold-drawing-pipe device, including inner mold 2, outer mold 3, nut 1, core bar 5 and rear plug 6, described
Outer mold 3 is placed on the outer surface of described core bar 5, and described inner mold 2 is arranged on one end of described core bar 5, and connects with described nut 1
Connecing fixing, described rear plug 6 is placed on the other end of described core bar 5 and encloses outward described core bar 5, reduces described core bar 5 at steel pipe 4
The gap that interior radial direction is travelling.
Described inner mold 2, outer mold 3, core bar 5 and rear plug 6 and described steel pipe 4 central coaxial line, in process of tube plug drawing mill
Core bar 5 remains and steel pipe 4 central coaxial line under the location of rear plug 6, thus prevent or reduces the expansion of wall thickness deviation
Greatly, improve the qualification rate of product.
Described rear plug 6 one end is provided with step 7, it is to avoid in process of tube plug drawing mill, described rear plug 6 is all pushed described steel
Cannot take out in pipe 4.
Inner mold 2 in use, is placed on one end of the outer surface of core bar 5 by the present invention, loads onto nut 1, by described interior mould
Tool 2 and core bar 5 connect fastening, then inner mold 2, core bar 5 and nut 1 after fastening are inserted the inside of described steel pipe 4, make simultaneously
Described core bar 5 is through described outer mold 3, plug 6 after the other end of core bar 5 outer surface overlaps, and is inserted by described rear plug 6
The inside of described steel pipe 4, in process of tube plug drawing mill, promotes the steel pipe 4 needing draw, and described steel pipe 4 is at inner mold 2 and outer mold 3
Extruding compacted under, reach need steel pipe sizes；Meanwhile, core bar 5 remains and steel pipe under the guide-localization of rear plug 6
4 central coaxial lines, it is ensured that the Forming Quality of steel pipe 4.
The present invention effectively limits core bar in process of tube plug drawing mill by the application of rear stopper structure and radially moves about in steel pipe
Amplitude, thus prevent or reduce the expansion of wall thickness deviation, improve the qualification rate of product.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (3)
1. a cold-drawing-pipe device, it is characterised in that include inner mold, outer mold, nut, core bar and rear plug, described external mold
Tool is placed on the outer surface of described core bar, and described inner mold is arranged on one end of described core bar, and connects fixing with described nut, institute
State rear plug be placed on the other end of described core bar and enclose outward described core bar.
A kind of cold-drawing-pipe device the most according to claim 1, it is characterised in that described inner mold, outer mold, core bar and after
Plug all with the steel pipe central coaxial line needing cold-drawn.
A kind of cold-drawing-pipe device the most according to claim 1, it is characterised in that the afterbody of described rear plug is provided with step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610789052.0A CN106180228A (en) | 2016-08-31 | 2016-08-31 | A kind of cold-drawing-pipe device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610789052.0A CN106180228A (en) | 2016-08-31 | 2016-08-31 | A kind of cold-drawing-pipe device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106180228A true CN106180228A (en) | 2016-12-07 |
Family
ID=58085869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610789052.0A Pending CN106180228A (en) | 2016-08-31 | 2016-08-31 | A kind of cold-drawing-pipe device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106180228A (en) |
-
2016
- 2016-08-31 CN CN201610789052.0A patent/CN106180228A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161207 |