CN219924118U - Cold drawing device - Google Patents
Cold drawing device Download PDFInfo
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- CN219924118U CN219924118U CN202321653118.5U CN202321653118U CN219924118U CN 219924118 U CN219924118 U CN 219924118U CN 202321653118 U CN202321653118 U CN 202321653118U CN 219924118 U CN219924118 U CN 219924118U
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- Prior art keywords
- forced
- supporting
- piece
- cold drawing
- supporting surface
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- 238000010622 cold drawing Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000007731 hot pressing Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Supports For Pipes And Cables (AREA)
Abstract
The utility model provides a cold drawing device, which is characterized by comprising: a frame; the support unit comprises a forced support piece and a power unit; the power unit is connected with the forced support piece and is configured to drive the forced support piece to rotate; the forced support piece comprises a first supporting surface and a second supporting surface, and the distance from the first supporting surface to the rotation center of the forced support piece is smaller than the distance from the second supporting surface to the rotation center of the forced support piece; and the supporting piece is in a strip shape and is matched with the forced supporting piece.
Description
Technical Field
The utility model relates to a cold drawing device.
Background
At present, the production process of the aluminum alloy battery square tube is divided into two types. A square tube is made up through hot pressing or cold pressing to obtain a minimum wall thickness of 0.45mm, and features that it is made up by hot pressing or cold pressing. The other is mainly a welding process, and the minimum wall thickness can be 0.3mm, but only a uniform wall thickness can be formed.
The prior art cold drawing apparatus typically stretches the blank in the axial direction to obtain a bar-like material that cannot be stretched in the radial/transverse direction of the tube. Therefore, the round tube is processed into a square tube, and the prior art generally adopts a punching device for processing. But stamping has the following drawbacks: easy deformation and poor dimensional accuracy; the surface is easy to scratch, so that the stamping process has a plurality of defects that the round tube is manufactured into the square tube.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provide the cold drawing device with reasonable structural design.
The technical scheme adopted by the embodiment of the utility model for solving the problems is as follows: a cold drawing apparatus, comprising:
a frame;
the support unit is arranged on the frame and comprises a forced supporting piece and a power unit; the power unit is connected with the forced support piece and is configured to drive the forced support piece to rotate; the forced support piece comprises a first supporting surface and a second supporting surface, and the distance from the first supporting surface to the rotation center of the forced support piece is smaller than the distance from the second supporting surface to the rotation center of the forced support piece; and
the supporting piece is in a strip shape and is matched with the forced supporting piece.
In the embodiment of the utility model, the first supporting surface and the second supporting surface are in transitional connection through an arc surface.
In the embodiment of the utility model, the first supporting surface has a first peak, the second supporting surface has a second peak, and the distance from the outer surface of the forced support to the rotation center of the forced support gradually increases in the direction from the first peak to the second peak.
In the embodiment of the utility model, the ratio of the distance from the second vertex to the rotation center of the forced support piece to the distance from the first vertex to the rotation center of the forced support piece is less than or equal to 2.
The power unit comprises a cylinder, a first connecting rod and a second connecting rod, wherein the forced supporting piece is respectively hinged to the first connecting rod and the second connecting rod, and the cylinder is used for respectively controlling the forced supporting piece to rotate when the first connecting rod and the second connecting rod move in opposite directions.
The forced bracing piece provided by the embodiment of the utility model has an initial position and a bracing tube position, wherein the first supporting surface corresponds to the supporting piece in the initial position, and the second supporting surface corresponds to the supporting piece in the bracing tube position.
The forced bracing piece provided by the embodiment of the utility model is provided with an internal channel, and the first connecting rod and the second connecting rod respectively pass through the internal channel.
The periphery of the forced bracing piece is elliptical.
In the embodiment of the utility model, the ratio of the distance between the rotation centers of two adjacent forced supporting pieces to the long axis of the forced supporting piece is more than 2 and less than 5.
The forced supporting pieces are arranged in a plurality of mode, and the forced supporting pieces are controlled through one power unit.
Compared with the prior art, the utility model has one or more of the following advantages or effects: the structure is simple, and the design is reasonable; when in use, the pipe (round pipe or oval pipe) is sleeved on the supporting unit of the cold drawing device, the supporting piece is arranged between the inner wall of the pipe and the forced supporting piece, and the first supporting surface is matched with the supporting piece at the moment; the forced supporting piece is rotated by the power unit, the forced supporting piece gradually supports the pipe through the supporting piece to deform the pipe, and finally the second supporting surface is propped against the supporting piece 3, so that the stretching of the cross section direction of the pipe is completed; the support piece is replaceable after being arranged in the pipe and then inserted into the pipe, so that the support piece can be replaced according to different size requirements, and when cold drawing is needed for multiple times, only the support piece is needed to be replaced when different cold drawing procedures are needed, the equipment utilization rate can be improved, and the cost is reduced.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
Fig. 1 is a schematic perspective view of a cold drawing device according to an embodiment of the present utility model.
Fig. 2 is a schematic perspective view of a cold drawing device according to an embodiment of the utility model.
Fig. 3 is an enlarged view at a in fig. 2.
Fig. 4 is a schematic view of the front view of the urging member.
Fig. 5 is a schematic view of the urging member being urged to rotate by the first link and the second link.
Detailed Description
In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Preferred embodiments of the present utility model are shown in the drawings. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. The directions such as "axial direction", "above", "below", etc. are hereinafter for the sake of clarity of the structural positional relationship, and are not limiting of the present utility model. In the present utility model, the terms "vertical", "horizontal", "parallel" are defined as: including + -10% cases based on standard definition. For example, vertical generally refers to an included angle of 90 degrees with respect to the reference line, but in the present utility model, vertical refers to a case including 80 degrees to 100 degrees or less.
Referring to fig. 1 to 5, the cold drawing apparatus of the present embodiment includes a frame 1, a support unit 2, and a support 3.
The supporting unit 2 in the embodiment is arranged on the frame 1 and comprises a forced supporting piece 21 and a power unit 22; the power unit 22 is connected with the forced support piece 21 and is configured to drive the forced support piece 21 to rotate; the support-forcing member 21 includes a first supporting surface 211 and a second supporting surface 212, and a distance from the first supporting surface 211 to a rotation center O of the support-forcing member 21 is smaller than a distance from the second supporting surface 212 to the rotation center O of the support-forcing member 21.
The supporting member 3 in this embodiment is strip-shaped and cooperates with the urging member 21.
When in use, the pipe 10 (round pipe or oval pipe) is sleeved on the supporting unit 2 of the cold drawing device, the supporting piece 3 is arranged between the inner wall of the pipe and the forced supporting piece 21, and the first supporting surface 211 is matched with the supporting piece 3 at the moment; the forced supporting piece 21 is rotated by the power unit 22, the forced supporting piece 21 gradually supports the pipe 10 in the rotating process to deform the pipe, and finally the second supporting surface 212 is propped against the supporting piece 3, so that the stretching of the pipe 10 in the cross section direction is completed, multiple groups of cold drawing devices can be arranged to obtain the target size, and the assembly enables the pipe to approach the target size through multiple times of cold drawing. The pipe 10 is stretched by the forced supporting piece 21 matched with the supporting piece 3, so that compared with other processes in the prior art, the surface of the pipe 10 is not scratched, and the pipe is not easy to damage.
The support 3 is inserted into the tube 10 after the tube 10 is set, which is replaceable, so that the support 3 can be replaced according to different dimensional requirements. When cold drawing is needed for many times, only the support piece 3 is needed to be replaced when different cold drawing procedures are needed, so that the equipment utilization rate can be improved, and the cost is reduced.
In this embodiment, the first supporting surface 211 and the second supporting surface 212 are in transitional connection through an arc surface, so that the support member 21 can be gently pushed to the support member 3 when rotating, and the cold drawing quality is ensured.
The first supporting surface 211 and the second supporting surface 212 in this embodiment are both arc surfaces. The radius of curvature of the second supporting surface 212 is smaller than that of the first supporting surface 211, so that the second supporting surface 212 can better prop open the supporting member 3.
The first supporting surface 211 of the present embodiment has a first vertex 2111, the second supporting surface 212 has a second vertex 2121, and the distance from the outer surface of the urging member 21 to the rotation center O thereof gradually increases from the first vertex 2111 to the second vertex 2121.
In this embodiment, the ratio of the distance a from the second vertex 2121 to the rotation center O of the urging member 21 to the distance b from the first vertex 2111 to the rotation center O of the urging member 21 is less than or equal to 2 and greater than 1.4. So that the amount of one cold drawing is controlled, one excessive cold drawing is avoided, uneven wall thickness or material breakage is caused, and at the same time, the cold drawing efficiency is ensured.
The power unit 22 of this embodiment includes a cylinder 221, a first connecting rod 222, and a second connecting rod 223, the forced-bracing member 21 is hinged to the first connecting rod 222 and the second connecting rod 223, and fig. 5 shows that the forced-bracing member 21 rotates under the control of the first connecting rod 222 and the second connecting rod 223 to change the state, and the cylinder 221 controls the first connecting rod 222 and the second connecting rod 223 to move in opposite directions (opposite directions of the first connecting rod 222 and the second connecting rod 223 along the length direction of the pipe) respectively, and the forced-bracing member 21 rotates. In other embodiments, the rotation of the urging member 21 can be controlled by a motor or a cylinder, which will not be described here.
The forced bracing member 21 of the present embodiment has an initial position and a bracing position, wherein the first supporting surface 211 corresponds to the supporting member 3 in the initial position, and the second supporting surface 212 corresponds to the supporting member 3 in the bracing position.
The urging member 21 of this embodiment has an internal passage, and the first link 222 and the second link 223 respectively pass through the internal passage. To avoid the first link 222 and the second link 223 from interfering with the processing of the pipe 10 outside the forced bracing member 21.
The outer circumference of the urging member 21 in this embodiment is elliptical, and has two sets of first supporting surfaces 211 and two sets of second supporting surfaces 212.
The ratio of the dimension of the distance between the rotation centers O of two adjacent urging members 21 to the dimension of the long axis of the urging member 21 (i.e., the distance between the two second vertexes) is greater than 2 and less than 5. Therefore, the pipe 10 can have a uniform force applied in the longitudinal direction, and dimensional accuracy is ensured.
The number of the urging members 21 in the present embodiment is plural, and the number of the urging members 21 is controlled by one power unit 22 to simplify the structure.
The foregoing description of the utility model is merely exemplary of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions, without departing from the scope of the utility model as defined in the accompanying claims.
Claims (10)
1. A cold drawing apparatus, comprising:
a frame;
the support unit is arranged on the frame and comprises a forced supporting piece and a power unit; the power unit is connected with the forced support piece and is configured to drive the forced support piece to rotate; the forced support piece comprises a first supporting surface and a second supporting surface, and the distance from the first supporting surface to the rotation center of the forced support piece is smaller than the distance from the second supporting surface to the rotation center of the forced support piece; and
the supporting piece is in a strip shape and is matched with the forced supporting piece.
2. The cold drawing apparatus according to claim 1, wherein: the first supporting surface and the second supporting surface are in transitional connection through an arc surface.
3. The cold drawing apparatus according to claim 2, wherein: the first supporting surface is provided with a first peak, the second supporting surface is provided with a second peak, and the distance from the outer surface of the forced supporting piece to the rotation center of the forced supporting piece gradually increases in the direction from the first peak to the second peak.
4. A cold drawing device according to claim 3, wherein: the ratio of the distance from the second vertex to the rotation center of the forced support piece to the distance from the first vertex to the rotation center of the forced support piece is less than or equal to 2.
5. The cold drawing apparatus according to claim 1, wherein: the power unit comprises a cylinder, a first connecting rod and a second connecting rod, the forced support piece is hinged to the first connecting rod and the second connecting rod respectively, and the cylinder controls the first connecting rod and the second connecting rod to rotate when moving in opposite directions respectively.
6. The cold drawing apparatus according to claim 5, wherein: the forced bracing piece is provided with an initial position and a bracing tube position, wherein the first supporting surface corresponds to the supporting piece in the initial position, and the second supporting surface corresponds to the supporting piece in the bracing tube position.
7. The cold drawing apparatus according to claim 5, wherein: the forced bracing piece is provided with an internal channel, and the first connecting rod and the second connecting rod respectively pass through the internal channel.
8. The cold drawing apparatus according to claim 1, wherein: the periphery of the forced supporting piece is elliptical.
9. The cold drawing apparatus according to claim 8, wherein: the ratio of the distance between the rotation centers of two adjacent forced supporting pieces to the long axis of the forced supporting piece is more than 2 and less than 5.
10. The cold drawing apparatus according to claim 1, wherein: the forced support members are provided in plurality and are controlled by one power unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321653118.5U CN219924118U (en) | 2023-06-28 | 2023-06-28 | Cold drawing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321653118.5U CN219924118U (en) | 2023-06-28 | 2023-06-28 | Cold drawing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219924118U true CN219924118U (en) | 2023-10-31 |
Family
ID=88492197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321653118.5U Active CN219924118U (en) | 2023-06-28 | 2023-06-28 | Cold drawing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219924118U (en) |
-
2023
- 2023-06-28 CN CN202321653118.5U patent/CN219924118U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 86 Kechuang Road, Wuzhen Town, Tongxiang City, Jiaxing City, Zhejiang Province, 314501 Patentee after: Zhejiang Zhongze Precision Technology Co.,Ltd. Country or region after: China Address before: No. 86 Kechuang Road, Wuzhen Town, Tongxiang City, Jiaxing City, Zhejiang Province, 314501 Patentee before: ZHEJIANG ZZ PRECISION TECHNOLOGY CO.,LTD. Country or region before: China |