CN210253605U - Special-shaped tube air-drawing forming die - Google Patents
Special-shaped tube air-drawing forming die Download PDFInfo
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- CN210253605U CN210253605U CN201920660762.2U CN201920660762U CN210253605U CN 210253605 U CN210253605 U CN 210253605U CN 201920660762 U CN201920660762 U CN 201920660762U CN 210253605 U CN210253605 U CN 210253605U
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Abstract
The utility model provides a special pipe air-drawing forming die, which comprises a die body, wherein the center of the die body is provided with a die inlet, and the cross section of the die outlet is special-shaped; a composite deformation area is arranged in the die body, and a sizing belt area is arranged at a position close to the die outlet. The device has the advantages that the mold reduces the excessive drawing links for many times, shortens the production period, reduces the production cost and can meet the requirements of medium and large-batch production.
Description
Technical Field
The utility model relates to a drawing die, especially a mechanical tubes air-draw forming die in being applicable to copper pipe processing.
Background
In the modern society, copper pipes are widely used in refrigeration industries such as air conditioners, refrigerators, condensers and the like. The drawing is the most common processing method for processing copper pipes, and the essence of the drawing is a method of plastic deformation under the action of external force, and the copper pipe passes through a special cavity in a drawing die to obtain the final required shape. The drawing of the copper pipe is mainly divided into empty drawing and cored drawing; the cored drawing is the drawing production of the copper pipe in reducing diameter and reducing wall, and mainly works by matching a core head with a drawing external mold; the air-drawing is directly formed by drawing through a die cavity in the die without the assistance of a core print. Under the current production situation, core drawing is mostly adopted.
The existing common circular copper pipe has the advantages of high efficiency, good finish, stable size and the like by adopting a cored drawing process, while the special pipe is not ideal by adopting cored drawing, the conditions of core head cracking, block falling and the like often occur due to factors such as uneven stress of a die and the like, and the cost of the die is higher than that of a common die, so that the finished product rate of products is lower, the processing efficiency is low and the processing cost is very high.
Disclosure of Invention
The utility model aims at designing a mechanical tubes air-drawing forming die with reasonable structure and ideal processing effect.
The technical scheme of the utility model be, mechanical tubes air-draw forming die, it includes the mould body, its characterized in that: the center of the die body is provided with a die inlet, and the cross section of the die outlet is special-shaped; a composite deformation area is arranged in the die body, and a sizing belt area is arranged at a position close to the die outlet.
The composite deformation zone is a continuous combination of a plurality of deformation zones.
The cross section of the outlet of the die is in a cross shape or an oval shape.
The multi-time deformation area is deformed twice, and smooth transition is adopted for connection between the first deformation area and the second deformation area.
The length of the first deformation zone accounts for one third to one fourth of the length of the whole deformation zone, and the length of the second deformation zone accounts for two thirds to three quarters of the length of the whole deformation zone.
The drawing angle of the first deformation area is larger than that of the second deformation area.
The utility model has the advantages that: the device has the advantages that the mold reduces the excessive drawing links for many times, shortens the production period, reduces the production cost and can meet the requirements of medium and large-batch production.
Drawings
Figure 1 is a schematic structural view of the present invention,
fig. 2 is a cross-sectional view of the present invention.
Detailed Description
The embodiments are described in detail in connection with the above drawings,
the special pipe air-drawing forming die comprises a die body 1, wherein a die inlet 2 is arranged at the center of the die body, and the cross section of a die outlet 5 is cross-shaped; a composite deformation zone, namely a first deformation zone 3 and a second deformation zone 4, is arranged in the die body, and a sizing zone is arranged at a position close to the die outlet;
the composite deformation zone described in this embodiment is a continuous combination of a plurality of deformation zones, and the connection between the first deformation zone and the second deformation zone adopts smooth transition;
in the embodiment, the length of the first deformation area accounts for one third of the length of the whole deformation area, and the length of the second deformation area accounts for two thirds of the length of the whole deformation area; or the length of the first deformation zone is one quarter of the length of the whole deformation zone, and the length of the second deformation zone is three quarters of the length of the whole deformation zone. And then if need be can set up more deformation zone in whole deformation zone, adjacent deformation zone all passes through smooth and smooth transition, can be better like this promote the drawing quality of opposite sex pipe.
In this embodiment, the drawing angle of the first deformation area is greater than that of the second deformation area.
The utility model discloses a many times deformation zone is divided into first deformation zone and second deformation zone, and first deformation zone also can be called first grade compression zone, is the process that the copper pipe blank is by circular to oval shape transition, and the product that the design in first grade compression zone deformation zone can effectively be alleviated the base pipe and lead to because the atress is inhomogeneous sinks, and second deformation zone also is called the second compression zone, and the process of the transition of main aspects oval shape to tip abnormal shape tubular product shape mainly plays the guide transition effect; finally, the sizing belt controls the required size and shape of the final special pipe.
The above examples are merely illustrative for clarity and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. It is not necessary or necessary to exhaustively enumerate all embodiments herein, and obvious variations or modifications can be made without departing from the scope of the invention.
Claims (3)
1. Mechanical tubes air-draw forming die, it includes the mould body, its characterized in that: the center of the die body is provided with a die inlet, and the cross section of the die outlet is special-shaped; a composite deformation area is arranged in the die body, and a sizing belt area is arranged at a position close to the die outlet; the composite deformation zone is a continuous combination of a plurality of deformation zones; the multi-time deformation zone is deformed twice, and the connection between the first deformation zone and the second deformation zone adopts smooth transition; the drawing angle of the first deformation area is larger than that of the second deformation area.
2. A profiled tube blank-drawing forming die as claimed in claim 1, wherein: the cross section of the outlet of the die is in a cross shape or an oval shape.
3. A profiled tube blank-drawing forming die as claimed in claim 1, wherein: the length of the first deformation zone accounts for one third to one fourth of the length of the whole deformation zone, and the length of the second deformation zone accounts for two thirds to three quarters of the length of the whole deformation zone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920660762.2U CN210253605U (en) | 2019-05-09 | 2019-05-09 | Special-shaped tube air-drawing forming die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920660762.2U CN210253605U (en) | 2019-05-09 | 2019-05-09 | Special-shaped tube air-drawing forming die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210253605U true CN210253605U (en) | 2020-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920660762.2U Active CN210253605U (en) | 2019-05-09 | 2019-05-09 | Special-shaped tube air-drawing forming die |
Country Status (1)
| Country | Link |
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| CN (1) | CN210253605U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112058930A (en) * | 2020-08-18 | 2020-12-11 | 浙江大学 | A terrace die and supporting production facility structure for drawing eccentric blank pipe |
| CN112211015A (en) * | 2020-09-30 | 2021-01-12 | 江阴泰阳成索业有限公司 | Rotary forging and drawing die for high-efficiency production of surface-contact steel wire rope |
-
2019
- 2019-05-09 CN CN201920660762.2U patent/CN210253605U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112058930A (en) * | 2020-08-18 | 2020-12-11 | 浙江大学 | A terrace die and supporting production facility structure for drawing eccentric blank pipe |
| CN112058930B (en) * | 2020-08-18 | 2021-06-29 | 浙江大学 | A terrace die and supporting production facility structure for drawing eccentric blank pipe |
| CN112211015A (en) * | 2020-09-30 | 2021-01-12 | 江阴泰阳成索业有限公司 | Rotary forging and drawing die for high-efficiency production of surface-contact steel wire rope |
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