A stainless steel pipe forming device and its processing technology

Abstract

This application relates to a stainless steel pipe forming apparatus, including a machine base. A fixed seat, a longitudinal straightening section, and a transverse straightening section are sequentially arranged on the machine base. The machine base also has a positioning structure for positioning the stainless steel pipe, including an axis guide section and an abutment section. The axis guide section extends along the forward direction of the stainless steel pipe and is located above the axis of the stainless steel pipe. The abutment section is connected to the axis guide section and includes an abutment seat that abuts against the side wall of the stainless steel pipe. The upper part of the abutment seat is rotatably connected to the axis guide section, and the lower part is movably connected to the machine base. The application also relates to a processing technology for the stainless steel pipe forming apparatus. This application sets the axis guide section as a parallel line to the centerline of the stainless steel pipe. The abutment section is located below the axis guide section and abuts against the stainless steel pipe with the correction assistance of the axis guide section, ensuring the stability of the centerline of the stainless steel pipe during the straightening process. The pipe then enters the longitudinal and transverse straightening sections to complete the straightening process, thereby improving the straightening quality of the stainless steel pipe.

Description

Technical Field

[0001] This application relates to the field of stainless steel pipe processing technology, and in particular to a stainless steel pipe forming device and its processing technology. Background Technology

[0002] In the stainless steel pipe forming process, straightening the stainless steel pipe using a straightening machine is an essential step. In related technologies, the straightening machine is equipped with several straightening rollers, which are distributed in pairs. The steel pipe is passed into the middle position of each pair of straightening rollers, and the straightening rollers are driven to rotate by a motor or other drive device, which abuts against the steel pipe to straighten it.

[0003] Regarding the aforementioned technologies, the applicant believes that during the straightening process of the steel pipe, the straightening force of the straightening roller may cause a certain deviation in the axis of the steel pipe, affecting the overall straightening quality of the steel pipe. Therefore, there is still room for improvement. Summary of the Invention

[0004] In order to maintain the stability of the axis of the steel pipe during the straightening process and improve the straightening quality of the steel pipe, this application provides a stainless steel pipe forming device and its processing technology.

[0005] The stainless steel tube forming device provided in this application adopts the following technical solution: A stainless steel tube forming apparatus includes a base. The base is provided with a fixed seat for the stainless steel tube to enter, a longitudinal straightening part, and a transverse straightening part. The base is also provided with a positioning structure for positioning the stainless steel tube. The positioning structure includes an axis guide part and an abutment part. The axis guide part extends along the forward direction of the stainless steel tube and is located at the upper part of the axis of the stainless steel tube. The abutment part is connected to the axis guide part and includes an abutment seat that abuts against the side wall of the stainless steel tube. The upper part of the abutment seat is rotatably connected to the axis guide part, and the lower part is movably connected to the base.

[0006] By adopting the above technical solution, the axis guide is set as a parallel line to the axis of the stainless steel tube, and the abutment part is set below the axis guide. With the correction assistance of the axis guide, the stainless steel tube abuts against the stainless steel tube, so that the stainless steel tube maintains the stability of the axis during the straightening process and enters the longitudinal straightening part and the transverse straightening part at the correct angle and position, thereby improving the straightening quality of the stainless steel tube.

[0007] Preferably, the abutment seat is deformable, and a support frame is fixed at intervals on the base. The axis guide part includes a connecting shaft fixed on the support frame, a fixed shaft, a horizontally extending guide shaft installed on the connecting shaft, and a calibration block fixed below the guide shaft. The upper part of the abutment seat can abut against the calibration block. The fixed shaft is fixed on the support frame on the side opposite to the connecting shaft, and the other end of the guide shaft away from the connecting shaft is fixed on the fixed shaft.

[0008] By adopting the above technical solution, the connecting shaft and the fixed shaft support the guide shaft and the calibration block. The upper part of the abutment seat abuts against the calibration block, keeping the center line of the relative abutment seats from deviating, thus correcting the stainless steel tube and reducing the deviation of the stainless steel tube's axis.

[0009] Preferably, the upper part of the abutment seat is rotatably connected to the fixed shaft, and the abutment part also includes a connecting plate. The middle part of the connecting plate is rotatably connected to the support shaft extending and fixed on the support frame. The two ends of the connecting plate are respectively rotatably connected to the lower part of the abutment seat and the corresponding position of the support frame. The end of the connecting plate on the support frame is driven by a driving cylinder. And the support frame is provided with an arc-shaped rotating groove to guide the rotation of the connecting plate.

[0010] By adopting the above technical solution, the connecting plate enables the drive cylinder fixed on the support frame to move the lower part of the abutment seat, thereby opening the corresponding abutment seat to make room before the stainless steel pipe enters, and then driving the corresponding abutment seat to abut the stainless steel pipe after the stainless steel pipe enters, so as to correct the deviation of the stainless steel pipe.

[0011] Preferably, the support frame is respectively disposed on both sides of the transverse straightening section. The transverse straightening section includes a plurality of opposing transverse straightening rollers and connecting blocks arranged at intervals, and the opposing transverse straightening rollers are staggered. The connecting block is fixed to the bottom of the transverse straightening roller and slidably connected to the machine base. A linkage structure is provided on the abutment seat located on the side of the transverse straightening roller near the longitudinal straightening section. The linkage structure includes a horizontal plate and a push plate. The horizontal plate extends on the machine base and is driven to slide by the abutment seat. A plurality of push plates are fixed on the horizontal plate and correspond one-to-one with the connecting blocks, and the push plates abut against the side wall of the connecting blocks.

[0012] By adopting the above technical solution, the connecting block supports the transverse straightening roller, and the moving of the horizontal plate and push plate is driven by the abutment seat. The abutment against the connecting block allows the opposite connecting blocks to approach each other, maintaining the pressure balance of the left and right transverse straightening rollers, so that the straightening force on the stainless steel pipe is symmetrical in the horizontal direction, thereby improving the straightening effect.

[0013] Preferably, the linkage structure further includes a linkage plate and a mating plate. The linkage plate is rotatably connected to the connecting plate, and the linkage plate and the mating plate are horizontally slidably connected to the machine base and abut against the horizontal plate. The mating plates are spaced apart along the extension direction of the horizontal plate. The linkage plate and an adjacent mating plate as well as the spaced mating plates are all fixedly connected by fixing rods.

[0014] By adopting the above technical solution, the rotation of the connecting plate drives the movement of the linkage plate. Through the horizontal sliding of the linkage plate and the mating plate, the rotational driving force of the connecting plate is converted into a horizontal driving force, which pushes the horizontal plate, push plate, connecting block and transverse straightening roller to move, thereby achieving the purpose of pushing the transverse straightening roller to fit the surface of the stainless steel pipe and helping to maintain the pressure balance of the left and right transverse straightening rollers.

[0015] Preferably, a sliding block is fixed below the linkage plate and the mating plate, and a sliding groove is provided on the machine base for the sliding block to slide horizontally.

[0016] By adopting the above technical solution, the sliding block and the sliding groove guide the linkage plate and the mating plate to move stably horizontally.

[0017] Preferably, the connecting block is equipped with a connecting bolt connected to the machine base, and the connecting bolt is positioned against the machine base by a connecting nut connected by a thread.

[0018] Preferably, the longitudinal straightening section includes a plurality of longitudinal straightening rollers arranged at intervals and opposite each other, and a support panel supporting the longitudinal straightening rollers. The upper and lower longitudinal straightening rollers are staggered. A mounting block is fixed on the upper longitudinal straightening roller and slidably connected to the support panel. A mounting bolt is installed on the mounting block and passes through the support panel. The mounting bolt is positioned against the support panel by a mounting nut connected by a thread.

[0019] Preferably, the base has waist-shaped holes on both sides corresponding to the support panel, and fixing bolts fixed to the bottom of the support panel can be inserted into the waist-shaped holes.

[0020] This application also provides a processing technology for a stainless steel pipe forming device, including the following steps: the stainless steel pipe is conveyed by an external conveying mechanism into the longitudinal straightening section under the guidance of the fixed seat for longitudinal straightening. Then the stainless steel tube enters the support frame located in front of the transverse straightening section. At this time, the lower part of the opposite abutment is in the open state. When the stainless steel tube enters between the opposite abutment, the drive cylinder drives one end of the connecting plate to move counterclockwise along the rotating groove, so that the opposite abutment approaches each other until the upper part of the abutment abuts the calibration block and the lower part of the abutment abuts the side wall of the stainless steel tube. The movement of the connecting plate simultaneously drives the synchronous movement of the linkage plate and the horizontal plate. The push plate pushes the connecting block to move, and then the connecting nut is locked to position the connecting block and the horizontal straightening roller. At this point, the stainless steel pipe continues to enter the transverse straightening section and is further straightened by the transverse straightening rollers until the stainless steel pipe finally enters the support frame at the rear of the transverse straightening section. The abutment seat at the very end keeps the axis of the stainless steel pipe from shifting throughout the entire process.

[0021] In summary, this application includes at least one of the following beneficial technical effects: The axis guide is set as a parallel line to the axis of the stainless steel tube. The abutment part is set below the axis guide and abuts against the stainless steel tube with the correction assistance of the axis guide, so that the stainless steel tube maintains the stability of the axis during the straightening process and enters the longitudinal straightening part and the transverse straightening part at the correct angle and position, thereby improving the straightening quality of the stainless steel tube. The connecting shaft and fixed shaft support the guide shaft and calibration block. The upper part of the abutment seat abuts against the calibration block, keeping the center line of the relative abutment seats from deviating. This plays a corrective role for the stainless steel tube being abutted, reducing the deviation of the stainless steel tube's axis. The connecting plate is driven to rotate by the driving cylinder, which synchronously drives the abutment seat to abut against the stainless steel tube and drives the movement of the linkage plate. Through the horizontal sliding of the linkage plate and the mating plate, the rotational driving force of the connecting plate is converted into a horizontal driving force, which pushes the horizontal plate, push plate, connecting block and transverse straightening roller to move, so as to push the transverse straightening roller to fit against the surface of the stainless steel tube and help maintain the pressure balance of the left and right transverse straightening rollers. Attached Figure Description

[0022] Figure 1 This is a structural schematic diagram of an embodiment of this application; Figure 2 This is a partially exploded structural diagram of the longitudinal straightening roller and mounting block connected to the support panel according to an embodiment of this application; Figure 3 This is a schematic diagram of the structure of the connecting shaft, fixed shaft, guide shaft, calibration block, abutment seat and connecting plate in the support frame after the connecting plate on one side is hidden in the embodiment of this application; Figure 4 This is a partially exploded structural diagram of the transverse straightening roller, connecting block, and the cooperation of the transverse plate and push plate in an embodiment of this application. Figure 5 This is a schematic diagram of the structure of the mating plate and the sliding block in an embodiment of this application.

[0023] Explanation of reference numerals in the attached drawings: 1. Machine base; 11. Waist-shaped hole; 12. Support frame; 121. Support shaft; 122. Rotating groove; 2. Fixed seat; 3. Longitudinal straightening part; 31. Longitudinal straightening roller; 32. Support panel; 4. Transverse straightening part; 41. Transverse straightening roller; 42. Connecting block; 421. Connecting bolt; 422. Connecting nut; 5. Mounting block; 51. Mounting bolt; 52. Mounting nut; 6. Axis guide part; 61. Connecting shaft; 62. Fixed shaft; 63. Guide shaft; 64. Calibration block; 7. Abutment part; 71. Abutment seat; 72. Connecting plate; 8. Linkage structure; 81. Linkage plate; 82. Mating plate; 83. Horizontal plate; 84. Push plate; 9. Sliding block; 10. Drive cylinder; 13. Fixed rod. Detailed Implementation

[0024] The present application will be further described in detail below with reference to the accompanying drawings.

[0025] This application discloses a stainless steel tube forming apparatus, referring to... Figure 1The machine includes a base 1, on which a fixed seat 2 for stainless steel pipes to enter, a longitudinal straightening section 3, and a transverse straightening section 4 are arranged in sequence. The stainless steel pipes are conveyed into the fixed seat 2 by an external conveying mechanism, and then pass through the longitudinal straightening section 3 and the transverse straightening section 4 in sequence to complete the straightening operation.

[0026] Reference Figure 1 The longitudinal straightening section 3 includes several longitudinal straightening rollers 31 arranged at intervals and opposite each other, and a support panel 32 supporting the longitudinal straightening rollers 31. The machine base 1 has waist-shaped holes 11 on both sides corresponding to the support panel 32. Fixing bolts fixed to the bottom of the support panel 32 can be inserted into the waist-shaped holes 11 to facilitate the adjustment and fixing of the position of the support panel 32 and the longitudinal straightening rollers 31.

[0027] Reference Figure 1 , 2 The upper and lower longitudinal straightening rollers 31 are spaced apart and staggered. A mounting block 5 is fixed on the upper longitudinal straightening roller 31 and slidably connected to the support panel 32. The mounting block 5 is in the shape of an "I" and can slide along the vertical direction of the support panel 32. A mounting bolt 51 is installed on the upper part of the mounting block 5 and passes through the support panel 32. The mounting bolt 51 is positioned against the support panel 32 by a mounting nut 52 connected by a thread.

[0028] Reference Figure 1 The machine base 1 is provided with a positioning structure of positioning stainless steel tube. The positioning structure includes an axis guide part 6. Support frames 12 are fixed at intervals on the machine base 1. The support frames 12 are located on the front side of the transverse straightening part 4 near the longitudinal straightening roller 31 and the rear side of the transverse straightening part 4, respectively.

[0029] Reference Figure 1 , 3 The axis guide part 6 includes a connecting shaft 61, a fixed shaft 62, a guide shaft 63, and a calibration block 64 fixed on the support frame 12. The connecting shaft 61 is fixed on the support frame 12 away from the longitudinal straightening roller 31. The fixed shaft 62 is fixed on the support frame 12 on the side opposite to the connecting shaft 61. The guide shaft 63 is mounted on the connecting shaft 61 and extends horizontally, and the other end of the guide shaft 63 away from the connecting shaft 61 is fixed on the fixed shaft 62. The calibration block 64 is fixed below the guide shaft 63.

[0030] Reference Figure 1 , 3The positioning structure also includes an abutment part 7, which includes an abutment seat 71 that abuts against the side wall of the stainless steel tube. The abutment seat 71 is made of deformable rubber. It should be noted that the deformation of the abutment seat 71 is only used to reduce contact friction and will not cause the stainless steel tube's axis to shift. The upper part of the abutment seat 71 is rotatably connected to the side wall of the fixed shaft 62, and the lower part of the abutment seat 71 is rotatably connected to the support frame 12. The axis guide part 6 is set as a parallel line to the axis of the stainless steel tube. The abutment part 7 is set below the axis guide part 6 and abuts against the stainless steel tube with the correction assistance of the axis guide part 6, so that the stainless steel tube maintains the stability of its axis during the straightening process and enters the longitudinal straightening part 3 and the transverse straightening part 4 at the correct angle and position, thereby improving the straightening quality of the stainless steel tube.

[0031] Reference Figure 3 The abutment part 7 also includes a connecting plate 72. The middle part of the connecting plate 72 is rotatably connected to the support shaft 121 that extends and is fixed on the support frame 12. The two ends of the connecting plate 72 are respectively rotatably connected to the lower part of the abutment seat 71 and the corresponding part of the support frame 12. One end of the connecting plate 72 on the support frame 12 is driven by the drive cylinder 10. A rotating shaft is fixed to the connecting plate 72 at the support frame 12. A collar is fixed to the output end of the drive cylinder 10 and is set on the rotating shaft. An arc-shaped rotating groove 122 is provided on the support frame 12 to guide the rotation of the connecting plate 72, so that the extension and retraction of the drive cylinder 10 can drive the rotating shaft to move along the rotating groove 122.

[0032] Reference Figure 1 , 3 The connecting plate 72 drives the movement of the lower part of the abutment seat 71, thereby opening the relative abutment seat 71 to make room before the stainless steel pipe enters, and then driving the relative abutment seat 71 to abut against the stainless steel pipe after the stainless steel pipe enters, so as to correct the deviation of the stainless steel pipe; it should be noted that the two relative drive cylinders 10 are controlled to drive the rotation of the two connecting plates 72 synchronously to maintain the synchronous opposite or back-to-back movement of the relative transverse straightening rollers 41.

[0033] Reference Figure 1 The transverse straightening section 4 includes several transverse straightening rollers 41 and connecting blocks 42 arranged at intervals and facing each other, with the transverse straightening rollers 41 on the left and right being staggered. The connecting blocks 42 are fixed to the bottom of the transverse straightening rollers 41 and slidably connected to the machine base 1. The connecting blocks 42 are in the shape of an "I" and can slide horizontally along the machine base 1. Connecting bolts 421 connected to the machine base 1 are installed on the connecting blocks 42, and the connecting bolts 421 are positioned against the machine base 1 by connecting nuts 422 connected by threads.

[0034] Reference Figure 3 , 4A linkage structure 8 is provided on the abutment seat 71 located on the side of the transverse straightening roller 41 near the longitudinal straightening part 3. The linkage structure 8 includes a linkage plate 81 and a mating plate 82. The linkage plate 81 is rotatably connected to the connecting plate 72, and the linkage plate 81 and the mating plate 82 are horizontally slidably connected to the machine base 1 and abut against the transverse plate 83. The mating plates 82 are spaced apart along the extension direction of the transverse plate 83. The linkage plate 81 and an adjacent mating plate 82 as well as the spaced mating plates 82 are all fixedly connected by a fixing rod 13.

[0035] Reference Figure 1 , 4 The linkage structure 8 also includes a horizontal plate 83 and a push plate 84. The horizontal plate 83 extends on the machine base 1 and is driven to slide by the abutment seat 71. Several push plates 84 are fixed on the horizontal plate 83 and correspond one-to-one with the connecting block 42. The push plates 84 abut against the side wall of the connecting block 42. The rotation of the connecting plate 72 drives the movement of the linkage plate 81. Through the horizontal sliding of the linkage plate 81 and the mating plate 82, the rotational driving force of the connecting plate 72 is converted into a horizontal driving force, which pushes the horizontal plate 83 and the push plate 84, the connecting block 42 and the transverse straightening roller 41 to move, so as to push the transverse straightening roller 41 to fit against the surface of the stainless steel pipe and help maintain the pressure balance of the left and right transverse straightening rollers 41.

[0036] Reference Figure 4 , 5 Taking the mating plate 82 as an example, both the linkage plate 81 and the mating plate 82 have a sliding block 9 fixed below them and housed in the base 1. The base 1 has a sliding groove for the sliding block 9 to slide horizontally, which guides the stable horizontal movement of the linkage plate 81 and the mating plate 82.

[0037] This application also discloses a processing technology for a stainless steel tube forming device, including the following steps: The stainless steel pipe is guided by the fixed seat 2 and conveyed by the external conveying mechanism into the longitudinal straightening section 3 for longitudinal straightening.

[0038] Then the stainless steel tube enters the support frame 12 located in front of the transverse straightening section 4. At this time, the lower part of the opposite abutment seat 71 is in the open state. When the stainless steel tube enters between the opposite abutment seats 71, the drive cylinder 10 drives one end of the connecting plate 72 to move counterclockwise along the rotating groove, so that the opposite abutment seats 71 move closer to each other until the upper part of the abutment seat 71 abuts against the calibration block 64 and the lower part of the abutment seat 71 abuts against the side wall of the stainless steel tube.

[0039] The movement of the connecting plate 72 simultaneously drives the synchronous movement of the linkage plate 81 and the horizontal plate 83. The push plate 84 pushes the connecting block 42 to move, and then the connecting nut 422 is locked to position the connecting block 42 and the horizontal straightening roller 41.

[0040] At this point, the stainless steel pipe continues to enter the transverse straightening section 4 and is further straightened by the transverse straightening roller 41 until the stainless steel pipe finally enters the support frame 12 on the rear side of the transverse straightening section 4. The abutment seat 71 at the very end keeps the axis of the stainless steel pipe from shifting throughout the entire process.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A stainless steel pipe forming apparatus, comprising a base (1), characterized in that: The base (1) is provided with a fixed seat (2) for the stainless steel tube to enter, a longitudinal straightening part (3) and a transverse straightening part (4) in sequence. The base (1) is also provided with a positioning structure for positioning the stainless steel tube. The positioning structure includes an axis guide part (6) and an abutment part (7). The axis guide part (6) extends along the forward direction of the stainless steel tube and is located at the upper part of the axis of the stainless steel tube. The abutment part (7) is connected to the axis guide part (6). The abutment part (7) includes an abutment seat (71) that abuts against the side wall of the stainless steel tube. The upper part of the abutment seat (71) is rotatably connected to the axis guide part (6), and the lower part is movably connected to the base (1).

2. The stainless steel pipe forming device according to claim 1, characterized in that: The abutment (71) is deformable. A support frame (12) is fixed at intervals on the base (1). The axis guide part (6) includes a connecting shaft (61) fixed on the support frame (12), a fixed shaft (62), a horizontally extending guide shaft (63) installed on the connecting shaft (61), and a calibration block (64) fixed below the guide shaft (63). The upper part of the abutment (71) can abut against the calibration block (64). The fixed shaft (62) is fixed on the support frame (12) on the side opposite to the connecting shaft (61), and the other end of the guide shaft (63) away from the connecting shaft (61) is fixed on the fixed shaft (62).

3. The stainless steel pipe forming device according to claim 2, characterized in that: The upper part of the abutment seat (71) is rotatably connected to the fixed shaft (62). The abutment part (7) also includes a connecting plate (72). The middle part of the connecting plate (72) is rotatably connected to the support shaft (121) that extends and is fixed on the support frame (12). The two ends of the connecting plate (72) are respectively rotatably connected to the lower part of the abutment seat (71) and the corresponding part of the support frame (12). One end of the connecting plate (72) on the support frame (12) is driven by the driving cylinder (10). The support frame (12) is provided with an arc-shaped rotating groove (122) to guide the rotation of the connecting plate (72).

4. The stainless steel pipe forming device according to claim 3, characterized in that: The support frame (12) is respectively set on both sides of the transverse straightening part (4). The transverse straightening part (4) includes a number of opposite transverse straightening rollers (41) and connecting blocks (42) arranged at intervals, and the opposite transverse straightening rollers (41) are staggered. The connecting block (42) is fixed to the bottom of the transverse straightening roller (41) and slidably connected to the machine base (1). A linkage structure (8) is provided on the abutment seat (71) on the side of the transverse straightening roller (41) near the longitudinal straightening part (3). The linkage structure (8) includes a horizontal plate (83) and a push plate (84). The horizontal plate (83) extends on the machine base (1) and is driven to slide by the abutment seat (71). A number of push plates (84) are fixed on the horizontal plate (83) and correspond one-to-one with the connecting blocks (42), and the push plates (84) abut against the side wall of the connecting block (42).

5. The stainless steel pipe forming device according to claim 4, characterized in that: The linkage structure (8) further includes a linkage plate (81) and a mating plate (82). The linkage plate (81) is rotatably connected to the connecting plate (72), and the linkage plate (81) and the mating plate (82) are horizontally slidably connected to the base (1) and abut against the horizontal plate (83). The mating plates (82) are spaced apart along the extension direction of the horizontal plate (83). The linkage plate (81) and an adjacent mating plate (82) as well as the spaced mating plates (82) are all fixedly connected by a fixing rod (13).

6. The stainless steel tube forming device according to claim 5, characterized in that: A sliding block (9) is fixed below the linkage plate (81) and the mating plate (82), and a sliding groove is provided on the base (1) for the sliding block (9) to slide horizontally.

7. The stainless steel pipe forming device according to claim 6, characterized in that: The connecting block (42) is equipped with a connecting bolt (421) connected to the base (1), and the connecting bolt (421) is positioned against the base (1) by a threaded connecting nut (422).

8. The stainless steel pipe forming apparatus according to claim 7, characterized in that: The longitudinal straightening section (3) includes a plurality of longitudinal straightening rollers (31) arranged at intervals and opposite each other, and a support panel (32) supporting the longitudinal straightening rollers (31). The upper and lower longitudinal straightening rollers (31) are staggered. A mounting block (5) is fixed on the upper longitudinal straightening roller (31) and slidably connected to the support panel (32). A mounting bolt (51) is installed on the mounting block (5) and passes through the support panel (32). The mounting bolt (51) is positioned against the support panel (32) by a mounting nut (52) connected by a thread.

9. A stainless steel pipe forming device according to claim 8, characterized in that: The base (1) has waist-shaped holes (11) on both sides corresponding to the support panel (32), and fixing bolts fixed to the bottom of the support panel (32) can be inserted into the waist-shaped holes (11).

10. The processing technology of the stainless steel pipe forming apparatus according to any one of claims 1-9, characterized in that: The process includes the following steps: the stainless steel pipe is guided by the fixed seat (2) and conveyed by the external conveying mechanism into the longitudinal straightening section (3) for longitudinal straightening; Then the stainless steel tube enters the support frame (12) located in front of the transverse straightening section (4). At this time, the lower part of the opposite abutment (71) is in the open state. When the stainless steel tube enters between the opposite abutment (71), the drive cylinder (10) drives one end of the connecting plate (72) to move counterclockwise along the rotating groove (122), so that the opposite abutment (71) approaches each other until the upper part of the abutment (71) abuts the calibration block (64) and the lower part of the abutment (71) abuts the side wall of the stainless steel tube. The movement of the connecting plate (72) simultaneously drives the synchronous movement of the linkage plate (81) and the horizontal plate (83), the push plate (84) pushes the connecting block (42) to move, and then the connecting nut (422) is locked to position the connecting block (42) and the horizontal straightening roller (41). At this time, the stainless steel pipe continues to enter the transverse straightening section (4) and the straightening operation is further completed by the transverse straightening roller (41) until the stainless steel pipe finally enters the support frame (12) on the back side of the transverse straightening section (4). The axis of the stainless steel pipe is kept from deviating throughout the process by the contact of the contact seat (71) located at the end.

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