Equal-wall-thickness processing device for seamless stainless steel pipe

Abstract

The utility model discloses an equal-wall-thickness processing device for a seamless stainless steel pipe, and relates to the technical field of metal rolling. The equal-wall-thickness treatment device for the seamless stainless steel pipe comprises a base, a support is fixedly connected to the upper end of the base, a stainless steel pipe supporting frame is fixedly connected to the inner wall of the support, a cross-shaped frame is fixedly connected to the inner wall of the support, and a first driving motor is fixedly connected to the left end of the support; a two-way threaded rod is rotationally connected into a stainless steel pipe supporting frame, a stainless steel pipe supporting assembly is arranged in the stainless steel pipe supporting frame, the inner wall of a seamless stainless steel pipe is supported through a stainless steel pipe inner roller, a sliding block acts counter-acting force on the inner wall of the stainless steel pipe supporting frame, and direct supporting through the two-way threaded rod is avoided; and meanwhile, the stability of supporting the seamless stainless steel pipe is improved, and the service life of the device is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of metal rolling, in particular to a device for processing uniform wall thickness of seamless stainless steel pipes. Background Art

[0002] Seamless stainless steel pipes are widely used in industrial pipelines such as petroleum, chemical, medical, food, light industry, mechanical instruments, and mechanical structural components due to their advantages such as corrosion resistance, acid and alkali resistance and high tensile strength. Seamless stainless steel pipes are generally made by rolling methods such as cold rolling, hot extrusion and cold drawing.

[0003] Seamless stainless steel pipes have shortcomings such as uneven wall thickness and low brightness of the inner and outer surfaces of the pipe, which may lead to a decline in the product quality of the seamless stainless steel pipe and affect production efficiency and pass rate. At this time, the seamless stainless steel pipe needs to be processed. Some existing wall thickness processing devices for seamless stainless steel pipes use a bidirectional screw shaft, connecting rods, nuts and inner roller seats to support the inner wall of the seamless stainless steel pipe. After long-term use, the bidirectional screw will produce a certain degree of deformation. The bent bidirectional screw shaft may make the support of the connecting rod and the inner roller seat on the inner wall of the pipe unstable, thereby resulting in a decrease in the supporting force of the inner wall of the pipe. The bent bidirectional screw shaft may cause the position of the connecting rod and the inner roller seat to shift, thereby making the support position of the inner wall of the pipe incorrect, resulting in uneven force on the inner wall of the pipe, thereby affecting the processing effect of the wall thickness of the seamless stainless steel pipe. Utility Model Content

[0004] The purpose of the present utility model is to solve at least one of the technical problems existing in the prior art and to provide a device for processing equal wall thickness of seamless stainless steel pipes, which can solve the problem that the bidirectional screw will produce a certain degree of deformation after long-term use, and the bent bidirectional screw shaft may make the support of the connecting rod and the inner roller seat on the inner wall of the pipe unstable, thereby causing the supporting force of the inner wall of the pipe to decrease. The bent bidirectional screw shaft may cause the position of the connecting rod and the inner roller seat to shift, thereby making the support position of the inner wall of the pipe incorrect, resulting in uneven force on the inner wall of the pipe, and thus affecting the processing effect of the wall thickness of the seamless stainless steel pipe.

[0005] To achieve the above object, the utility model provides the following technical solution: a device for treating uniform wall thickness of seamless stainless steel pipes, comprising a base, a bracket fixedly connected to the upper end of the base, a stainless steel pipe support frame fixedly connected to the inner wall of the bracket, a cross frame fixedly connected to the inner wall of the bracket, and four slide grooves formed on the surface of the cross frame;

[0006] The left end of the bracket is fixedly connected to the first drive motor, the interior of the stainless steel tube support frame is rotatably connected to a bidirectional threaded rod, and the output end of the first drive motor rotates through the bracket and is fixedly connected to the left end of the bidirectional threaded rod;

[0007] The interior of the stainless steel pipe support frame is hollow, the bidirectional threaded rod is rotatably sleeved with the stainless steel pipe support frame, and a stainless steel pipe support assembly is arranged inside the stainless steel pipe support frame.

[0008] Preferably, the stainless steel pipe support assembly includes two sliding blocks, both of which are threadedly sleeved on the surface of the bidirectional threaded rod, and a supporting mechanism is provided inside the stainless steel pipe support frame;

[0009] The supporting mechanism includes two connecting rods, which are respectively rotatably connected to the surfaces of the corresponding sliding blocks. One end of the two connecting rods away from the corresponding sliding blocks is rotatably connected to a roller seat inside a stainless steel tube, and the interior of the roller seat inside the stainless steel tube is rotatably connected to a plurality of first rollers.

[0010] There are four supporting mechanisms, which are symmetrically arranged on the surface of the sliding block, and two stainless steel pipe supporting assemblies, which are both arranged inside the stainless steel pipe support frame.

[0011] Preferably, four inner roller brackets are slidably connected to the interior of the chute, and inner roller drive motors are fixedly connected to the surfaces of the four inner roller brackets;

[0012] Among them, the output ends of the four inner roller driving motors rotate through the corresponding inner roller brackets and are fixedly connected to the corresponding stainless steel tube inner rollers, and the four stainless steel tube inner rollers are respectively rotatably connected to the corresponding first rollers.

[0013] Preferably, the inner wall of the bracket is fixedly connected to two second hydraulic rods, the output ends of the two second hydraulic rods are fixedly connected to outer roller seats, the inner part of the outer roller seats is rotatably connected to stainless steel tube outer rollers, the inner part of the outer roller seats is rotatably connected to the same first rollers, and the stainless steel tube outer rollers are respectively rotatably connected to the corresponding first rollers;

[0014] Among them, the inner part of the chute is slidably connected to the outer roller bracket, the surface of the outer roller bracket is fixedly connected to the outer roller drive motor, and the output end of the outer roller drive motor rotates through the corresponding outer roller bracket and is fixedly connected to the corresponding stainless steel tube outer roller;

[0015] There are four such devices, which are symmetrically arranged on the inner wall of the bracket.

[0016] Preferably, the upper end of the base is fixedly connected to a connecting frame, the connecting frame is fixedly connected to the bracket, and the upper end of the base is fixedly connected to a fixing block;

[0017] The interior of the fixed block is fixedly connected to a first hydraulic rod, and the output end of the first hydraulic rod is fixedly connected to a first support frame limit frame.

[0018] Preferably, the lower end of the first support frame limit frame is fixedly connected to two sliding rods, both sliding rods are slidably connected to the fixed block, and the upper end of the first support frame limit frame is provided with a second support frame limit frame;

[0019] The second support frame limiting frame is fixedly connected to the first support frame limiting frame through fixing bolts, and both the first support frame limiting frame and the second support frame limiting frame are in contact with the stainless steel pipe support frame.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] (1) The equal wall thickness processing device of the seamless stainless steel pipe supports the inner wall of the seamless stainless steel pipe through the inner roller of the stainless steel pipe, and the reaction force is transmitted to the sliding block through the first roller, the inner roller seat of the stainless steel pipe, and the connecting rod. Then the sliding block applies the reaction force to the inner wall of the stainless steel pipe support frame, avoiding direct support by the bidirectional threaded rod, causing the bidirectional threaded rod to deform and affecting the service life of the bidirectional threaded rod. At the same time, the stability of the support for the seamless stainless steel pipe is improved, the service life of the device is improved, the safety of the device is improved, and the processing effect of the device is improved.

[0022] (2) The device for processing the uniform wall thickness of the seamless stainless steel pipe supports and limits the end of the stainless steel pipe support frame through the first support frame limit frame and the second support frame limit frame, thereby improving the supporting effect of the stainless steel pipe support frame, avoiding the stainless steel pipe support frame from bending during the supporting process of the seamless stainless steel pipe, improving the bearing capacity of the stainless steel pipe support frame, and improving the stability of the stainless steel pipe support frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0024] Figure 1 This is a schematic structural diagram of a device for processing uniform wall thickness of seamless stainless steel pipes according to the present invention;

[0025] Figure 2 This is a schematic diagram of the bracket of the utility model;

[0026] Figure 3 This is a schematic diagram of the cross frame of the utility model;

[0027] Figure 4 This is a schematic diagram of the outer roller of the stainless steel tube of the utility model;

[0028] Figure 5 This is a schematic diagram of the stainless steel pipe support frame of the utility model;

[0029] Figure 6 This is a schematic diagram of the first roller of the utility model;

[0030] Figure 7 This is a schematic diagram of the second roller of the present invention.

[0031] Figure markings: 1. base; 2. bracket; 3. connecting frame; 4. fixed block; 5. first hydraulic rod; 6. sliding rod; 7. first support frame limit frame; 8. second support frame limit frame; 9. cross frame; 10. stainless steel tube support frame; 11. slide groove; 12. first drive motor; 13. bidirectional threaded rod; 14. sliding block; 15. connecting rod; 16. stainless steel tube inner roller; 17. stainless steel tube inner roller seat; 18. inner roller bracket; 19. inner roller drive motor; 20. second hydraulic rod; 21. outer roller seat; 22. stainless steel tube outer roller; 23. outer roller bracket; 24. outer roller drive motor; 25. first roller. DETAILED DESCRIPTION

[0032] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0033] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0034] In the description of this utility model, terms such as "greater than," "less than," and "exceed" are understood to exclude the number indicated, while terms such as "above," "below," and "within" are understood to include the number indicated. The terms "first" and "second" are used solely to distinguish technical features and are not to be construed as indicating or implying relative importance, or as implicitly specifying the number or order of the technical features indicated.

[0035] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0036] See also Figure 1-6The utility model provides a technical solution: a device for processing equal wall thickness of seamless stainless steel pipes, comprising a base 1, the upper end of the base 1 is fixedly connected to a bracket 2, the inner wall of the bracket 2 is fixedly connected to a stainless steel pipe support frame 10, the inner wall of the bracket 2 is fixedly connected to a cross frame 9, the surface of the cross frame 9 is provided with four slide grooves 11, the left end of the bracket 2 is fixedly connected to a first drive motor 12, the interior of the stainless steel pipe support frame 10 is rotatably connected to a bidirectional threaded rod 13, the output end of the first drive motor 12 rotates through the bracket 2 and is fixedly connected to the left end of the bidirectional threaded rod 13, the interior of the stainless steel pipe support frame 10 is hollow, the bidirectional threaded rod 13 is rotatably sleeved with the stainless steel pipe support frame 10, and a stainless steel pipe support assembly is provided inside the stainless steel pipe support frame 10.

[0037] The stainless steel pipe support assembly includes two sliding blocks 14, and the two sliding blocks 14 are threadedly sleeved on the surface of the bidirectional threaded rod 13. A support mechanism is provided inside the stainless steel pipe support frame 10, and the support mechanism includes two connecting rods 15, and the two connecting rods 15 are rotatably connected to the corresponding sliding block 14 surface. The two connecting rods 15 are rotatably connected to the stainless steel pipe inner roller seat 17 at one end away from the corresponding sliding block 14. The interior of the stainless steel pipe inner roller seat 17 is rotatably connected to multiple first rollers 25. There are four support mechanisms, which are symmetrically arranged on the surface of the sliding block 14. There are two stainless steel pipe support assemblies, both of which are arranged inside the stainless steel pipe support frame 10.

[0038] Furthermore, four inner roller brackets 18 are slidingly connected inside the slide 11, and the surfaces of the four inner roller brackets 18 are fixedly connected to inner roller drive motors 19. The output ends of the four inner roller drive motors 19 rotate through the corresponding inner roller brackets 18 and are fixedly connected to the corresponding stainless steel tube inner rollers 16. The four stainless steel tube inner rollers 16 are respectively rotatably connected to the corresponding first rollers 25.

[0039] Furthermore, two second hydraulic rods 20 are fixedly connected to the inner wall of the bracket 2, and the output ends of the two second hydraulic rods 20 are fixedly connected to the outer roller seat 21. The inner rotation of the outer roller seat 21 is connected to the stainless steel tube outer roller 22, and the inner rotation of the outer roller seat 21 is connected to the same first roller 25. The stainless steel tube outer rollers 22 are respectively rotatably connected to the corresponding first rollers 25. The inner sliding connection of the slide 11 is the outer roller bracket 23, and the surface of the outer roller bracket 23 is fixedly connected to the outer roller drive motor 24. The output ends of the outer roller drive motor 24 all rotate through the corresponding outer roller bracket 23 and are fixedly connected to the corresponding stainless steel tube outer roller 22. There are four such devices, which are symmetrically arranged on the inner wall of the bracket 2.

[0040] The upper end of the base 1 is fixedly connected to a connecting frame 3, and the connecting frame 3 is fixedly connected to the bracket 2. The upper end of the base 1 is fixedly connected to a fixed block 4, and the interior of the fixed block 4 is fixedly connected to a first hydraulic rod 5, and the output end of the first hydraulic rod 5 is fixedly connected to a first support frame limit frame 7. The lower end of the first support frame limit frame 7 is fixedly connected to two sliding rods 6, and the two sliding rods 6 are both slidably connected to the fixed block 4. The upper end of the first support frame limit frame 7 is provided with a second support frame limit frame 8, and the second support frame limit frame 8 is fixedly connected to the first support frame limit frame 7 by fixing bolts. The first support frame limit frame 7 and the second support frame limit frame 8 are both in contact with the stainless steel pipe support frame 10.

[0041] When using the device, first use a wrench or other tools to remove the fixing bolts connecting the first support frame limit frame 7 and the second support frame limit frame 8, start the first hydraulic rod 5 to drive the first support frame limit frame 7 to descend so that the first support frame limit frame 7 is separated from the stainless steel pipe support frame 10, and then place the heat-treated seamless stainless steel pipe on the outside of the four stainless steel pipe inner rollers 16, and then start the first hydraulic rod 5 to drive the first support frame limit frame 7 to rise and contact the stainless steel pipe support frame 10, and then use a wrench or other tools to fix the connection between the first support frame limit frame 7 and the second support frame limit frame 8, so as to facilitate the support of the stainless steel pipe support frame 10 during the processing of the seamless stainless steel pipe.

[0042] Start the first drive motor 12 to drive the bidirectional threaded rod 13 to rotate inside the stainless steel pipe support frame 10, the bidirectional threaded rod 13 drives the sliding block 14 to slide inside the stainless steel pipe support frame 10, the sliding block 14 drives the connecting rod 15 on its surface to rotate, the connecting rod 15 drives the corresponding stainless steel pipe inner roller seat 17 away from the stainless steel pipe support frame 10, the stainless steel pipe inner roller seat 17 drives the first roller 25 and the stainless steel pipe inner roller 16 to approach the inner wall of the seamless stainless steel pipe, so that the stainless steel pipe inner roller 16 contacts the inner wall of the seamless stainless steel pipe and squeezes the seamless stainless steel pipe.

[0043] The inner roller 16 of the stainless steel tube drives the inner roller bracket 18 to slide inside the corresponding slide groove 11, and the inner roller bracket 18 drives the inner roller drive motor 19 to move. When the inner roller 16 of the stainless steel tube supports the inner wall of the seamless stainless steel tube, the reaction force is transmitted to the sliding block 14 through the first roller 25, the stainless steel tube inner roller seat 17, and the connecting rod 15. Then the sliding block 14 applies the reaction force to the inner wall of the stainless steel tube support frame 10, avoiding direct support by the bidirectional threaded rod 13, causing the bidirectional threaded rod 13 to deform, and affecting the service life of the bidirectional threaded rod 13.

[0044] At the same time, the second hydraulic rod 20 is started to drive the outer roller seat 21 close to the seamless stainless steel pipe, and the outer roller seat 21 drives the first roller 25 and the stainless steel pipe outer roller 22 close to the seamless stainless steel pipe, so that the stainless steel pipe outer roller 22 contacts the outer wall of the seamless stainless steel pipe and squeezes the seamless stainless steel pipe. The stainless steel pipe outer roller 22 drives the outer roller bracket 23 to slide inside the corresponding slide groove 11, and the outer roller bracket 23 drives the outer roller drive motor 24 to move. The inner roller drive motor 19 is started to drive the stainless steel pipe inner roller 16 to rotate, and the stainless steel pipe inner roller 16 drives the first roller 25 to rotate. The outer roller drive motor 24 is started to drive the stainless steel pipe outer roller 22 to rotate, and the stainless steel pipe outer roller 22 drives the corresponding first roller 25 to rotate. The rotation direction of the inner roller drive motor 19 is opposite to that of the outer roller drive motor 24.

[0045] During the process of extruding the seamless stainless steel pipe by the stainless steel pipe outer roller 22 and the stainless steel pipe inner roller 16, the seamless stainless steel pipe can be driven to rotate, which is convenient for adjusting the wall thickness of the seamless stainless steel pipe. During the extrusion and rotation of the seamless stainless steel pipe, the thicker part of the seamless stainless steel pipe moves axially and circumferentially to fill the thinner part of the seamless stainless steel pipe until the set wall thickness is reached.

[0046] Furthermore, the inner wall of the seamless stainless steel pipe is supported by the stainless steel pipe inner roller 16, and the reaction force is transmitted to the sliding block 14 through the first roller 25, the stainless steel pipe inner roller seat 17, and the connecting rod 15. Then the sliding block 14 applies the reaction force to the inner wall of the stainless steel pipe support frame 10, avoiding direct support by the bidirectional threaded rod 13, causing the bidirectional threaded rod 13 to deform, affecting the service life of the bidirectional threaded rod 13, and at the same time improving the stability of the support for the seamless stainless steel pipe, improving the service life of the device, improving the safety of the device, and improving the processing effect of the device.

[0047] The ends of the stainless steel pipe support frame 10 are supported and limited by the first support frame limit frame 7 and the second support frame limit frame 8, thereby improving the supporting effect of the stainless steel pipe support frame 10, avoiding bending of the stainless steel pipe support frame 10 during the support process of the seamless stainless steel pipe, improving the bearing capacity of the stainless steel pipe support frame 10, and improving the stability of the stainless steel pipe support frame 10.

[0048] Working principle: When using this device, first use a wrench or other tools to remove the fixing bolts connecting the first support frame limit frame 7 and the second support frame limit frame 8, start the first hydraulic rod 5 to drive the first support frame limit frame 7 to descend so that the first support frame limit frame 7 is separated from the stainless steel pipe support frame 10, and then place the heat-treated seamless stainless steel pipe on the outside of the four stainless steel pipe inner rollers 16, and then start the first hydraulic rod 5 to drive the first support frame limit frame 7 to rise and contact the stainless steel pipe support frame 10, and then use a wrench or other tools to fix the connection between the first support frame limit frame 7 and the second support frame limit frame 8, so as to facilitate the support of the stainless steel pipe support frame 10 during the processing of the seamless stainless steel pipe.

[0049] Start the first drive motor 12 to drive the bidirectional threaded rod 13 to rotate inside the stainless steel pipe support frame 10, the bidirectional threaded rod 13 drives the sliding block 14 to slide inside the stainless steel pipe support frame 10, the sliding block 14 drives the connecting rod 15 on its surface to rotate, the connecting rod 15 drives the corresponding stainless steel pipe inner roller seat 17 away from the stainless steel pipe support frame 10, the stainless steel pipe inner roller seat 17 drives the first roller 25 and the stainless steel pipe inner roller 16 to approach the inner wall of the seamless stainless steel pipe, so that the stainless steel pipe inner roller 16 contacts the inner wall of the seamless stainless steel pipe and squeezes the seamless stainless steel pipe.

[0050] The inner roller 16 of the stainless steel tube drives the inner roller bracket 18 to slide inside the corresponding slide groove 11, and the inner roller bracket 18 drives the inner roller drive motor 19 to move. When the inner roller 16 of the stainless steel tube supports the inner wall of the seamless stainless steel tube, the reaction force is transmitted to the sliding block 14 through the first roller 25, the stainless steel tube inner roller seat 17, and the connecting rod 15. Then the sliding block 14 applies the reaction force to the inner wall of the stainless steel tube support frame 10, avoiding direct support by the bidirectional threaded rod 13, causing the bidirectional threaded rod 13 to deform, and affecting the service life of the bidirectional threaded rod 13.

[0051] At the same time, the second hydraulic rod 20 is started to drive the outer roller seat 21 close to the seamless stainless steel pipe, and the outer roller seat 21 drives the first roller 25 and the stainless steel pipe outer roller 22 close to the seamless stainless steel pipe, so that the stainless steel pipe outer roller 22 contacts the outer wall of the seamless stainless steel pipe and squeezes the seamless stainless steel pipe. The stainless steel pipe outer roller 22 drives the outer roller bracket 23 to slide inside the corresponding slide groove 11, and the outer roller bracket 23 drives the outer roller drive motor 24 to move. The inner roller drive motor 19 is started to drive the stainless steel pipe inner roller 16 to rotate, and the stainless steel pipe inner roller 16 drives the first roller 25 to rotate. The outer roller drive motor 24 is started to drive the stainless steel pipe outer roller 22 to rotate, and the stainless steel pipe outer roller 22 drives the corresponding first roller 25 to rotate. The rotation direction of the inner roller drive motor 19 is opposite to that of the outer roller drive motor 24.

[0052] During the process of extruding the seamless stainless steel pipe by the stainless steel pipe outer roller 22 and the stainless steel pipe inner roller 16, the seamless stainless steel pipe can be driven to rotate, which is convenient for adjusting the wall thickness of the seamless stainless steel pipe. During the extrusion and rotation of the seamless stainless steel pipe, the thicker part of the seamless stainless steel pipe moves axially and circumferentially to fill the thinner part of the seamless stainless steel pipe until the set wall thickness is reached.

[0053] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A device for treating a seamless stainless steel pipe with uniform wall thickness, comprising a base (1), characterized in that: The upper end of the base (1) is fixedly connected to a bracket (2), the inner wall of the bracket (2) is fixedly connected to a stainless steel pipe support frame (10), the inner wall of the bracket (2) is fixedly connected to a cross frame (9), and the surface of the cross frame (9) is provided with four slide grooves (11); The left end of the bracket (2) is fixedly connected to a first drive motor (12), the interior of the stainless steel tube support frame (10) is rotatably connected to a bidirectional threaded rod (13), and the output end of the first drive motor (12) rotates through the bracket (2) and is fixedly connected to the left end of the bidirectional threaded rod (13); The interior of the stainless steel tube support frame (10) is hollow, the bidirectional threaded rod (13) is rotatably sleeved with the stainless steel tube support frame (10), and a stainless steel tube support assembly is provided inside the stainless steel tube support frame (10).

2. The device for treating seamless stainless steel pipes with uniform wall thickness according to claim 1, characterized in that: The stainless steel pipe support assembly comprises two sliding blocks (14), both of which are threadedly sleeved on the surface of the bidirectional threaded rod (13), and a supporting mechanism is provided inside the stainless steel pipe support frame (10); The supporting mechanism includes two connecting rods (15), the two connecting rods (15) are respectively rotatably connected to the surfaces of corresponding sliding blocks (14), one end of the two connecting rods (15) away from the corresponding sliding blocks (14) is rotatably connected to a stainless steel tube inner roller seat (17), and the interior of the stainless steel tube inner roller seat (17) is rotatably connected to a plurality of first rollers (25); There are four supporting mechanisms, which are symmetrically arranged on the surface of the sliding block (14), and two stainless steel pipe supporting assemblies, which are both arranged inside the stainless steel pipe support frame (10).

3. The device for treating seamless stainless steel pipes with uniform wall thickness according to claim 2, characterized in that: Four inner roller supports (18) are slidably connected to the interior of the chute (11), and inner roller drive motors (19) are fixedly connected to the surfaces of the four inner roller supports (18); The output ends of the four inner roller drive motors (19) rotate through the corresponding inner roller brackets (18) and are fixedly connected to the corresponding stainless steel tube inner rollers (16), and the four stainless steel tube inner rollers (16) are respectively rotationally connected to the corresponding first rollers (25).

4. The device for treating seamless stainless steel pipes with uniform wall thickness according to claim 1, characterized in that: Two second hydraulic rods (20) are fixedly connected to the inner wall of the bracket (2), the output ends of the two second hydraulic rods (20) are fixedly connected to the outer roller seat (21), the inner portion of the outer roller seat (21) is rotatably connected to the stainless steel tube outer roller (22), the inner portion of the outer roller seat (21) is rotatably connected to the same first roller (25), and the stainless steel tube outer rollers (22) are respectively rotatably connected to the corresponding first rollers (25); The inner portion of the chute (11) is slidably connected to an outer roller bracket (23), the surface of the outer roller bracket (23) is fixedly connected to an outer roller drive motor (24), and the output end of the outer roller drive motor (24) rotates through the corresponding outer roller bracket (23) and is fixedly connected to the corresponding stainless steel tube outer roller (22); There are four such devices, which are symmetrically arranged on the inner wall of the bracket (2).

5. The device for treating seamless stainless steel pipes with uniform wall thickness according to claim 1, characterized in that: The upper end of the base (1) is fixedly connected to a connecting frame (3), the connecting frame (3) is fixedly connected to the bracket (2), and the upper end of the base (1) is fixedly connected to a fixing block (4); The interior of the fixed block (4) is fixedly connected to a first hydraulic rod (5), and the output end of the first hydraulic rod (5) is fixedly connected to a first support frame limiting frame (7).

6. The device for treating seamless stainless steel pipes to uniform wall thickness according to claim 5, characterized in that: The lower end of the first support frame limit frame (7) is fixedly connected to two slide bars (6), and the two slide bars (6) are both slidably connected to the fixed block (4). The upper end of the first support frame limit frame (7) is provided with a second support frame limit frame (8); The second support frame limiting frame (8) is fixedly connected to the first support frame limiting frame (7) via fixing bolts, and both the first support frame limiting frame (7) and the second support frame limiting frame (8) are in contact with the stainless steel pipe support frame (10).

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