CN110893425A - On-line straightening device for stainless steel pipe - Google Patents
On-line straightening device for stainless steel pipe Download PDFInfo
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- CN110893425A CN110893425A CN201911328132.6A CN201911328132A CN110893425A CN 110893425 A CN110893425 A CN 110893425A CN 201911328132 A CN201911328132 A CN 201911328132A CN 110893425 A CN110893425 A CN 110893425A
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- base
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
- B21D3/02—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers
- B21D3/05—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers arranged on axes rectangular to the path of the work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
- B21D3/14—Recontouring
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Abstract
The invention discloses an on-line straightening device for a stainless steel pipe, which comprises a base, wherein at least two outer straightening mechanisms which are arranged along the axial direction of the stainless steel pipe are arranged on the base; each outer straightening mechanism comprises a plurality of outer compression rollers arranged around an axis, and the base is also connected with at least two inner straightening mechanisms through a connecting shaft; the arrangement direction of each inner straightening mechanism is the same as that of the outer straightening mechanism, the inner straightening mechanisms correspond to the outer straightening mechanisms one by one, and the inner straightening mechanisms are positioned on the inner sides of the outer straightening mechanisms. The on-line straightening device for the stainless steel pipe, provided by the invention, can act on the inner side and the outer side of the stainless steel pipe simultaneously, the straightened stainless steel pipe has higher straightness and roundness, and the product quality is improved.
Description
Technical Field
The invention relates to the field of stainless steel pipe production, in particular to an on-line straightening device for a stainless steel pipe.
Background
The stainless steel pipe needs to be straightened after the procedures of plate bending, welding, grinding, polishing and the like. In the prior straightening equipment for stainless steel pipes, the press roll assemblies are positioned on the outer sides of the stainless steel pipes. The straightness of the stainless steel pipe can be improved through the multiple groups of external compression rollers. However, since the outer pressure rollers themselves are of a structure with a small diameter at the middle part and large diameters at the two ends, and a gap exists between adjacent outer pressure rollers in a group of outer pressure roller assemblies, when a stainless steel pipe passes between the outer pressure roller assemblies, the stainless steel pipe only contacts with the two ends of the roller surface of the outer pressure roller and does not contact with the middle part of the roller surface of the outer pressure roller, the same roundness of the stainless steel pipe is poor, and the improvement of the whole linearity of the stainless steel pipe is greatly limited.
Disclosure of Invention
The invention aims to provide an on-line straightening device for a stainless steel pipe, which can act on the inner side and the outer side of the stainless steel pipe simultaneously, and the straightened stainless steel pipe has higher straightness and roundness and improves the product quality.
In order to achieve the aim, the invention provides an on-line straightening device for a stainless steel pipe, which comprises a base, wherein at least two outer straightening mechanisms which are arranged along the axial direction of the stainless steel pipe are arranged on the base; each outer straightening mechanism comprises a plurality of outer compression rollers arranged around an axis, and the base is also connected with at least two inner straightening mechanisms through a connecting shaft; the arrangement direction of each inner straightening mechanism is the same as that of the outer straightening mechanism, the inner straightening mechanisms correspond to the outer straightening mechanisms one by one, and the inner straightening mechanisms are positioned on the inner sides of the outer straightening mechanisms.
As a further improvement of the invention, the inner straightening mechanism comprises a first base, the middle part of the first base is connected with the connecting shaft, a plurality of first sliding seats are connected on the first base in a sliding manner around the axis of the first base, and the sliding direction of the first sliding seats is the radial direction of the first sliding seats; each first sliding seat is rotatably connected with an inner compression roller; the first base is provided with a driving structure of the first sliding seat.
As a further improvement of the present invention, the driving structure of the first sliding seat comprises a pneumatic cylinder, the pneumatic cylinder is disposed in the first base, and one end of the first sliding seat extends into the pneumatic cylinder; the pneumatic cylinder is connected with an air supply device.
As a further improvement of the present invention, the air supply device includes an air pump and an air supply pipe connected to each other, and the air supply pipe is communicated with the pneumatic cylinder on the first base.
As a further improvement of the invention, the inner compression rollers on the inner straightening mechanisms adjacent to each other in the front and the back are arranged in a staggered manner.
As a further improvement of the invention, a coupling is connected between adjacent inner straightening mechanisms on the connecting shaft.
As a further improvement of the invention, the outer straightening mechanism comprises a second base connected with the base, a plurality of outer compression rollers are rotatably connected on the second base around the axial direction of the second base, and the outer compression rollers are in one-to-one correspondence with the inner compression rollers.
As a further improvement of the invention, the outer straightening mechanism further comprises a third base, a vertical sliding base and a transverse sliding base which are connected in sequence; a vertical adjusting mechanism is connected between the third base and the vertical sliding base; a transverse adjusting mechanism is connected between the vertical sliding base and the transverse sliding base; the second base is connected with the transverse sliding base.
As a further improvement of the invention, the second base is rotatably connected with the transverse sliding base, and an angle adjusting mechanism of the second base is connected between the transverse sliding base and the transverse sliding base.
Advantageous effects
Compared with the prior art, the on-line straightening device for the stainless steel pipe has the advantages that:
1. the inner straightening mechanisms correspond to the outer straightening mechanisms one by one. When the straightening device straightens the stainless steel pipe, the stainless steel pipe is clamped between the inner straightening mechanism and the outer straightening mechanism, the pipe wall of the stainless steel pipe is ensured to be fully contacted with the roller surface of the outer pressure roller through the combined action of the inner side and the outer side, the straightness and the same roundness of the straightened stainless steel pipe are high, and the product quality is improved.
2. The inner compression roller on the inner straightening mechanism can move along the radial direction of the first base along with the first sliding seat, and the movement of the inner compression roller is controlled by the driving structure of the first sliding seat. When the stainless steel pipe passes through the space between the outer press rollers of the outer straightening mechanisms, the inner press roller does not apply pressure to the inner side of the stainless steel pipe, so that the stainless steel pipe can be moved conveniently. After the stainless steel pipe moves in place, the inner pressing rollers press the inner side wall of the stainless steel pipe through the driving structure of the first sliding seat, and the pipe wall of the stainless steel pipe is ensured to be in full contact with the roller surface of the outer pressing roller. At the moment, the stainless steel pipe is axially moved, so that all parts of the stainless steel pipe can be straightened, and the same roundness is good.
3. The first sliding seat is driven by air pressure, so that the pressure is high, electric elements are reduced, and the production is safer.
4. The shaft coupling on the connecting shaft enables the inner straightening mechanism to be flexible in the axial direction, when the shaft coupling does not need to work, the inner compression roller of the inner straightening mechanism can be placed on the outer compression roller of the outer straightening mechanism to form a support, and the conditions that stress concentration and short service life of the connecting shaft are caused by too large gravity are avoided.
The invention will become more apparent from the following description when taken in conjunction with the accompanying drawings, which illustrate embodiments of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a front view of an in-line straightening apparatus for stainless steel tubing;
FIG. 2 is an enlarged front view of the inner straightening mechanism;
FIG. 3 is a side view of the straightening device on the stainless steel pipeline in use;
FIG. 4 is a side view of the inner alignment mechanism.
Detailed Description
Embodiments of the present invention will now be described with reference to the accompanying drawings.
Examples
The specific implementation manner of the invention is as shown in fig. 1 to 4, and the on-line straightening device for the stainless steel pipe comprises a base 1, wherein at least two outer straightening mechanisms 2 which are axially arranged along a stainless steel pipe 7 are arranged on the base 1; each outer straightening mechanism 2 comprises a plurality of outer pressure rollers 22 arranged around an axis, and the base 1 is further connected with at least two inner straightening mechanisms 3 through connecting shafts 4. The arrangement direction of each inner straightening mechanism 3 is the same as that of the outer straightening mechanism 2, the inner straightening mechanisms 3 correspond to the outer straightening mechanisms 2 one by one, and the inner straightening mechanisms 3 are positioned on the inner sides of the outer straightening mechanisms 2. The roll surface of the outer roll 22 is in the shape of an inwardly concave arc along its axial cross section. In this embodiment, each outer straightening mechanism 2 is provided with four outer pressure rollers 22 uniformly distributed, as shown in fig. 1.
The inner straightening mechanism 3 comprises a first base 31 with the middle part connected with the connecting shaft 4, a plurality of first sliding seats 33 are connected on the first base 31 in a sliding mode around the axis of the first base, and the sliding direction of the first sliding seats 33 is the radial direction of the first sliding seats 33. An inner pressing roller 34 is rotatably connected to each first sliding seat 33. The first base 31 is provided with a driving structure of the first sliding seat 33. The roll surface of the inner roll 34 is formed in an outwardly convex arc shape along its axial cross section. In this embodiment, each inner straightening mechanism 3 is also provided with four inner compression rollers 34 which are uniformly distributed.
The driving structure of the first sliding seat 33 includes a pneumatic cylinder 32, the pneumatic cylinder 32 is disposed in the first base 31, and one end of the first sliding seat 33 extends into the pneumatic cylinder 32. The pneumatic cylinder 32 is connected to an air supply device 6.
The air supply device 6 includes an air pump 61 and an air supply pipe 62 connected, and the air supply pipe 62 communicates with the pneumatic cylinder 32 on the first base 31. The air pump 61 is installed on the base 1, and the air supply pipe 62 may extend to the corresponding pneumatic cylinder 32 along the inside or outside of the connecting shaft 4.
The inner compression rollers 34 on the front and rear adjacent inner straightening mechanisms 3 are arranged in a staggered manner, the outer compression rollers 22 of the front and rear adjacent outer straightening mechanisms 2 are arranged in a staggered manner, and when the stainless steel pipe 7 moves between the outer straightening mechanisms 2 and the inner straightening mechanisms 3, all parts of the stainless steel pipe 7 can be ensured to be acted by the outer compression rollers 22 and the inner compression rollers 34.
A coupling 5 is connected between the adjacent inner straightening mechanisms 3 on the connecting shaft 4. In this embodiment, the plurality of inner straightening mechanisms 3 are connected in series through the connecting shaft 4 and the coupler 5, one end of each inner straightening mechanism is connected with the base 1 through the connecting shaft 4 and the coupler 5, and the other end of each inner straightening mechanism is a free end and conveniently extends into the stainless steel pipe 7.
The outer straightening mechanism 2 comprises a second base 21 connected with the base 1, the outer pressure rollers 22 are rotatably connected with the second base 21, and the outer pressure rollers 22 correspond to the inner pressure rollers 34 one by one.
The outer straightening mechanism 2 further comprises a third base 25, a vertical sliding base 24 and a transverse sliding base 23 which are connected in sequence. The third base 25 is arranged on the base 1, and a vertical adjusting mechanism 27 is connected between the third base 25 and the vertical sliding base 24. And a transverse adjusting mechanism 26 is connected between the vertical sliding base 24 and the transverse sliding base 23. The second base 21 is connected to a lateral slide base 23.
In this embodiment, the vertical adjusting mechanism 27 includes a first screw rod vertically arranged, the middle of the first screw rod is rotatably connected to the third base 25, the lower end of the first screw rod is in threaded connection with the vertical sliding base 24, and the vertical sliding base 24 is slidably connected to the third base 25 through a vertical guide rail.
The horizontal adjusting mechanism 26 comprises a second screw rod horizontally arranged, the middle of the second screw rod is rotatably connected with the vertical sliding base 24, one end of the second screw rod is in threaded connection with the horizontal sliding base 23, and the horizontal sliding base 23 is in sliding connection with the vertical sliding base 24 through a horizontal guide rail. The upper end of the first screw rod and the other end of the second screw rod are polygonal cylinders which can be screwed by a wrench and can be connected with a hand wheel.
The second base 21 is rotatably connected to the lateral slide base 23, and an angle adjusting mechanism of the second base 21 is connected between the two. In this embodiment, the angle adjustment mechanism includes a worm wheel 28 and a worm 29 that mesh with each other. The worm wheel 28 is fixedly connected with the second base 21 and is coaxially arranged, and the worm 29 is rotatably connected with the transverse sliding base 23. One end of the worm 29 is a polygonal cylinder, and in addition, a hand wheel can be connected.
When the stainless steel tube 7 needs to be straightened, the stainless steel tube 7 firstly passes through the space between the outer press rollers 22 of the outer straightening mechanisms 2, and at the moment, the inner press roller 34 does not press the inner side of the stainless steel tube 7, so that the stainless steel tube 7 can be conveniently moved. After the stainless steel tube 7 is moved to the right position, the driving structure of the first sliding seat 33 enables the inner press rollers 34 to press the inner side wall of the stainless steel tube 7, so as to ensure that the tube wall of the stainless steel tube 7 is fully contacted with the roller surface of the outer press roller 22. At this time, the stainless steel tube 7 is axially moved, so that all parts of the stainless steel tube can be straightened, and the same roundness is good.
The present invention has been described in connection with the preferred embodiments, but the present invention is not limited to the embodiments disclosed above, and is intended to cover various modifications, equivalent combinations, which are made in accordance with the spirit of the present invention.
Claims (9)
1. An on-line straightening device for stainless steel pipes comprises a base (1), wherein at least two outer straightening mechanisms (2) which are arranged along the axial direction of a stainless steel pipe are arranged on the base (1); each outer straightening mechanism (2) comprises a plurality of outer pressing rollers (22) which are arranged around an axis, and is characterized in that the base (1) is also connected with at least two inner straightening mechanisms (3) through a connecting shaft (4); the arrangement direction of each inner straightening mechanism (3) is the same as that of the outer straightening mechanism (2), the inner straightening mechanisms (3) correspond to the outer straightening mechanisms (2) one by one, and the inner straightening mechanisms (3) are positioned on the inner sides of the outer straightening mechanisms (2).
2. The on-line straightening device for the stainless steel pipes according to claim 1, wherein the inner straightening mechanism (3) comprises a first base (31) with the middle part connected with the connecting shaft (4), a plurality of first sliding seats (33) are connected to the first base (31) in a sliding manner around the axis of the first base, and the sliding direction of the first sliding seats (33) is radial to the first sliding seats (33); each first sliding seat (33) is rotatably connected with an inner compression roller (34); the first base (31) is provided with a driving structure of a first sliding seat (33).
3. The on-line straightening device for the stainless steel pipe according to the claim 2, characterized in that the driving structure of the first sliding seat (33) comprises a pneumatic cylinder (32), the pneumatic cylinder (32) is arranged in the first base (31), and one end of the first sliding seat (33) extends into the pneumatic cylinder (32); the pneumatic cylinder (32) is connected with an air supply device (6).
4. The stainless steel in-line straightening device according to claim 3, wherein the gas supply device (6) comprises a gas pump (61) and a gas supply pipe (62) which are connected, and the gas supply pipe (62) is communicated with a pneumatic cylinder (32) on the first base (31).
5. The on-line straightening device for the stainless steel pipes according to the claim 2, characterized in that the inner pressing rollers (34) on the inner straightening mechanisms (3) which are adjacent in the front and back are arranged in a staggered way.
6. The on-line straightening device for the stainless steel pipes according to claim 1, wherein a coupling (5) is connected between adjacent inner straightening mechanisms (3) on the connecting shaft (4).
7. The on-line straightening device for the stainless steel pipes according to claim 2, wherein the outer straightening mechanism (2) comprises a second base (21) connected with the base (1), the outer pressing roller (22) is rotatably connected with the second base (21), and the outer pressing roller (22) corresponds to the inner pressing roller (34) in a one-to-one manner.
8. The on-line straightening device for the stainless steel pipes according to claim 7, wherein the outer straightening mechanism (2) further comprises a third base (25), a vertical sliding base (24) and a transverse sliding base (23) which are connected in sequence; a vertical adjusting mechanism (27) is connected between the third base (25) and the vertical sliding base (24); a transverse adjusting mechanism (26) is connected between the vertical sliding base (24) and the transverse sliding base (23); the second base (21) is connected with a transverse sliding base (23).
9. The on-line straightening device for the stainless steel pipes according to the claim 8, characterized in that the second base (21) is rotatably connected with a transverse sliding base (23), and an angle adjusting mechanism of the second base (21) is connected between the two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911328132.6A CN110893425A (en) | 2019-12-20 | 2019-12-20 | On-line straightening device for stainless steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911328132.6A CN110893425A (en) | 2019-12-20 | 2019-12-20 | On-line straightening device for stainless steel pipe |
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| Publication Number | Publication Date |
|---|---|
| CN110893425A true CN110893425A (en) | 2020-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911328132.6A Pending CN110893425A (en) | 2019-12-20 | 2019-12-20 | On-line straightening device for stainless steel pipe |
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| Country | Link |
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| CN (1) | CN110893425A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111644490A (en) * | 2020-04-30 | 2020-09-11 | 中国航发南方工业有限公司 | Pipe end shape correcting device and pipe end shape correcting method |
| CN112337996A (en) * | 2020-09-29 | 2021-02-09 | 肖翰 | Aluminum alloy machined part deformation correcting device |
| CN116727494A (en) * | 2023-08-15 | 2023-09-12 | 江苏永钢集团有限公司 | Straightening device and method for deformed steel bars |
-
2019
- 2019-12-20 CN CN201911328132.6A patent/CN110893425A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111644490A (en) * | 2020-04-30 | 2020-09-11 | 中国航发南方工业有限公司 | Pipe end shape correcting device and pipe end shape correcting method |
| CN112337996A (en) * | 2020-09-29 | 2021-02-09 | 肖翰 | Aluminum alloy machined part deformation correcting device |
| CN116727494A (en) * | 2023-08-15 | 2023-09-12 | 江苏永钢集团有限公司 | Straightening device and method for deformed steel bars |
| CN116727494B (en) * | 2023-08-15 | 2023-10-20 | 江苏永钢集团有限公司 | Straightening device and method for deformed steel bars |
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