Stainless steel tube spinning machine

Abstract

The application discloses a stainless steel pipe spinning machine and belongs to the technical field of steel pipe spinning machines, which comprises a cabinet, a steel pipe positioning mechanism is assembled on the inner bottom wall of the cabinet, a transverse moving mechanism is assembled on the inner top wall of the cabinet, a vertical moving mechanism is assembled on the transverse moving mechanism, and a spinning mechanism is assembled on the vertical moving mechanism; the detachable combination structure of the spinning mechanism is achieved, a plurality of spinning parts can be quickly spliced, the machining requirement of multiple concaves is achieved, special spinning heads are not needed to be additionally configured, the types of equipment specifications are significantly reduced, the spinning arc blocks can be unfolded outward through driving rods, the spinning arc blocks can automatically adapt to the deformation depth of steel pipes of different specifications, the spinning heads are prevented from being frequently replaced, the machining flexibility is improved, meanwhile, the fitting plates are in real-time abutted against the spinning arc blocks during the unfolding process and are in real-time closely fitted against the non-deformed area of the steel pipe during the spinning process, and the deformation of the area is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel tube spinning machine, and particularly relates to a stainless steel tube spinning machine. BACKGROUND

[0002] Spinning is to fix a flat plate or a hollow blank on a die of a spinning machine, and to press the blank with a spinning roller or other structures while the blank rotates with the main shaft of the machine bed, so that the blank is locally plastically deformed.

[0003] At present, when the spinning machine performs spinning work on a stainless steel tube to form a local inwardly recessed plastic deformation, it faces significant operation limitations and cost challenges, specifically, for different specifications of stainless steel tubes or to achieve different degrees of deformation effect, the corresponding size of the spinning head must be frequently replaced, which is not only cumbersome to operate, but also low in efficiency, and more troublesome is that when the processing demand is upgraded to spin two or more recesses on the stainless steel tube, a specially designed spinning head needs to be additionally configured, and more size specifications are added, resulting in a sharp increase in equipment cost. SUMMARY

[0004] The purpose of the present application is to solve the problem that when the processing demand is upgraded to spin two or more recesses on the stainless steel tube, a specially designed spinning head needs to be additionally configured, and more size specifications are added, resulting in a sharp increase in equipment cost, and a stainless steel tube spinning machine is proposed.

[0005] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0006] A stainless steel tube spinning machine, comprising a cabinet, a steel tube positioning mechanism is assembled on the inner bottom wall of the cabinet, a transverse moving mechanism is assembled on the inner top wall of the cabinet, a vertical moving mechanism is assembled on the transverse moving mechanism, and a spinning mechanism is assembled on the vertical moving mechanism;

[0007] The spinning mechanism comprises a vertical plate fixed on the vertical moving mechanism, and a spinning piece connected to the vertical plate through two telescopic retaining pieces;

[0008] The spinning piece comprises a retaining frame, a limiting seat is fixed at the center of the retaining frame, a spinning arc block is slidably connected to the limiting seat through a horizontal sliding groove, and the spinning arc block is outwardly unfolded through a driving rod rotatably connected in the limiting seat;

[0009] The spinning mechanism further comprises a transverse adjustment assembly assembled on the telescopic retaining piece, and the transverse adjustment assembly further adjusts the overall position of the spinning arc block by rotating around the driving rod as the shaft.

[0010] Further description of the above technical scheme:

[0011] The spinning part further comprises a sliding sleeve sleeved on the top end of the driving rod, an inner thread is engraved on the top of the inner wall of the limiting seat, and an outer thread matching the inner thread is engraved on the outer wall of the sliding sleeve, so that the sliding sleeve can be threadedly connected to the limiting seat after the driving rod is driven to rotate.

[0012] As a further description of the above technical solution:

[0013] The top and bottom of the outer wall of the retainer are provided with vertical sliding grooves, a cladding plate is connected to the vertical sliding grooves through vertical sliding blocks, one end of the cladding plate is attached to the outer wall of the spinning arc block, a first spring is installed on the vertical sliding block, and the first spring is fixed to the inner wall of the vertical sliding groove.

[0014] As a further description of the above technical solution:

[0015] One end of the spinning arc block is fixed with a horizontal sliding rod matching the horizontal sliding groove, a plurality of guide grooves corresponding to the horizontal sliding rod are formed on the outer wall of the driving rod, a blocking ring is fixedly sleeved on the outer surface of the horizontal sliding rod, a second spring is fixed to one side of the blocking ring, and one end of the second spring is connected to one side wall of the horizontal sliding groove.

[0016] As a further description of the above technical solution:

[0017] The spinning mechanism further comprises end covers clamped at both ends of the retainer, the end covers are connected to the limiting seat through bolts, the bottom of the lower end cover is threadedly connected with a lower hollow shaft through a threaded groove, and the top of the upper end cover is fixed with an upper hollow shaft matching the threaded groove.

[0018] As a further description of the above technical solution:

[0019] The telescopic retainer comprises a retaining seat connected to the vertical plate, a bearing seat is connected to the retaining seat through a third spring, and the lower hollow shaft and the upper hollow shaft are respectively inserted into the two bearing seats, so that the spinning part is rotationally connected between the two telescopic retainers.

[0020] As a further description of the above technical solution:

[0021] The horizontal adjustment assembly comprises a support fixed to the bearing seat, a shaft column is rotationally connected in the support, a cam piece is fixed to the top end of the shaft column, and one end of the cam piece abuts against the outer wall of the vertical plate.

[0022] As a further description of the above technical solution:

[0023] The bottom end of the shaft column is rotationally connected with a mounting pipe through a bearing, the top end of the sliding sleeve penetrates through the upper hollow shaft and is fixed in the mounting pipe, so that the sliding sleeve does not rotate when the shaft column rotates.

[0024] As a further description of the above technical solution:

[0025] The vertical moving mechanism includes a mounting seat installed on the horizontal moving mechanism, an electric push rod is fixed to the middle of the outer wall of the mounting seat, and sliders are slidably connected to both sides of the outer wall of the mounting seat through slide rails. The sliders are distributed in the form of two groups, and a moving seat is fixed on the outer wall of each group of sliders. The vertical plate is fixed on the moving seat, and a connecting plate is commonly fixed to the bottom ends of the two moving seats, and one end of the electric push rod is fixed to the connecting plate.

[0026] As a further description of the above technical solution:

[0027] The steel pipe positioning mechanism includes a base installed in the cabinet, an installation box is installed on the base, the middle part of the installation box is rotatably connected to a placement shaft for inserting the stainless steel pipe, a motor is installed on the top wall of the installation box, the output end of the motor is fixed to the bottom end of the placement shaft, an electric hydraulic push rod is fixed on the top wall of the cabinet, one end of the electric hydraulic push rod is fixed to an extension seat, and the bottom of the extension seat is rotatably connected to a pipe pressing shaft adapted to the placement shaft.

[0028] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0029] The spinning mechanism is designed to realize a detachable combination structure of the spun parts, which can quickly splice multiple sets of spun parts to meet the needs of multi-depression processing without the need for additional special spinning heads, significantly reducing the types of equipment specifications;

[0030] The driving rod can expand the spinning arc block outward, so that it can automatically adapt to the deformation depth of steel pipes of different specifications, avoid frequent replacement of the spinning head, and improve processing flexibility. At the same time, during the expansion process, the bonding plate will be in real time against the spinning arc block, and in real time during the spinning process, it will fit tightly to the undeformed area of ​​the steel pipe to avoid deformation in this area. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of a three-dimensional structure provided in an embodiment of the present invention is shown;

[0032] Figure 2 A schematic diagram of the disassembled structure of a spinning part provided in an embodiment of the present invention is shown;

[0033] Figure 3 The embodiment of the present invention provides Figure 2 Enlarged view of point A in the middle;

[0034] Figure 4 The embodiment of the present invention provides Figure 2 Enlarged view of point B in the middle;

[0035] Figure 5 It shows a schematic structural diagram of a partially cut-away end cover according to an embodiment of the present invention;

[0036] Figure 6 A schematic structural diagram of a vertical movement mechanism according to an embodiment of the present invention is shown;

[0037] Figure 7 A schematic structural diagram of a driving rod provided in an embodiment of the present invention is shown;

[0038] Figure 8 It shows a schematic structural diagram of the entire spinning mechanism provided in an embodiment of the present invention;

[0039] Figure 9 A schematic structural diagram of the assembled spinning parts provided in accordance with an embodiment of the present invention is shown.

[0040] Legend:

[0041] 10. Cabinet;

[0042] 20. Steel pipe positioning mechanism; 21. Placement shaft; 22. Pipe pressing shaft;

[0043] 30. Vertical moving mechanism;

[0044] 40. Spinning mechanism; 41. Vertical plate; 42. Telescopic retainer; 421. Retaining seat; 422. Bearing seat; 43. Spinning member; 431. Retaining frame; 432. Limiting seat; 433. Spinning arc block; 434. Sliding sleeve; 435. Laminating plate; 436. Horizontal slide bar; 437. Guide groove; 438. Drive rod; 44. End cap;

[0045] 50. Lateral adjustment assembly; 51. Support; 52. Cam member. DETAILED DESCRIPTION

[0046] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0047] like Figure 1 - Figure 9 As shown, the present invention provides:

[0048] A stainless steel pipe spinning machine includes a cabinet 10, and a steel pipe positioning mechanism 20 is mounted on the bottom wall of the cabinet 10;

[0049] In further detail, the steel pipe positioning mechanism 20 comprises a base mounted in the cabinet 10, a mounting box is assembled on the base, a placing shaft 21 for inserting and placing the stainless steel pipe is rotatably connected to the middle part of the mounting box, a motor is assembled on the inner top wall of the mounting box, the output end of the motor is fixed with the bottom end of the placing shaft 21, an electric hydraulic push rod is fixed on the inner top wall of the cabinet 10, one end of the electric hydraulic push rod is fixed with an extension seat, the bottom of the extension seat is rotatably connected with a pipe pressing shaft 22 matched with the placing shaft 21;

[0050] Specifically, when the stainless steel pipe to be spinning is inserted and placed on the surface of the placing shaft 21, the extension seat drives the pipe pressing shaft 22 to move downward into the stainless steel pipe by the electric hydraulic push rod, and the stainless steel pipe is clamped and fixed by the placing shaft 21, at this time, the placing shaft 21 drives the stainless steel pipe and the pipe pressing shaft 22 to rotate together after the motor is started, at this time, the vertical moving mechanism 30 and the spinning mechanism 40 on the surface thereof are driven to move towards the stainless steel pipe by the downward moving mechanism, when contacting, the rotating stainless steel pipe drives the spinning piece 43 to rotate, and then the spinning piece 43 completes spinning on the stainless steel pipe.

[0051] As shown in Figure 1 , Figure 6 and Figure 8 , a horizontal moving mechanism is assembled on the inner top wall of the cabinet 10, and the vertical moving mechanism 30 is assembled on the horizontal moving mechanism;

[0052] In further detail, the vertical moving mechanism 30 comprises a mounting seat mounted on the horizontal moving mechanism, an electric push rod is fixed on the middle part of the outer wall of the mounting seat, sliding blocks are slidably connected to the two sides of the outer wall of the mounting seat through sliding rails, the sliding blocks are distributed in the form of two groups, a moving seat is fixed on the outer wall of each group of sliding blocks, and the bottom ends of the two moving seats are fixed with a connecting plate, one end of the electric push rod is fixed with the connecting plate, and in particular, the horizontal moving mechanism and the vertical moving mechanism 30 are the same in structure, only the installation orientation is different;

[0053] Specifically, when the vertical position of the spinning piece 43 needs to be adjusted, the connecting plate is moved by starting the electric push rod, and then the spinning piece 43 is moved to the required position by the moving seat;

[0054] As shown in Figure 1 , Figure 2 and Figure 5 , the spinning mechanism 40 is assembled on the vertical moving mechanism 30, the spinning mechanism 40 comprises a vertical plate 41 fixed on the vertical moving mechanism 30, the vertical plate 41 is fixed on the moving seat, the spinning piece 43 is connected to the vertical plate 41 through two telescopic retaining pieces 42, the telescopic retaining piece 42 comprises a retaining seat 421 connected with the vertical plate 41, and a bearing seat 422 is connected with the retaining seat 421 through a third spring;

[0055] The spinning part 43 comprises a holder 431, a limiting seat 432 fixed at the center of the holder 431, a spinning arc block 433 slidably connected to the limiting seat 432 through a horizontal sliding slot, and the spinning arc block 433 is outwardly unfolded through a driving rod 438 rotatably connected in the limiting seat 432;

[0056] In further detail, the spinning part 43 further comprises a sliding sleeve 434 slidably sleeved on the top end of the driving rod 438, the inner wall of the limiting seat 432 is provided with an internal thread at the top, and the outer wall of the sliding sleeve 434 is provided with an external thread matched with the internal thread, so that the sliding sleeve 434 can be threadedly connected in the limiting seat 432 after the driving rod 438 is rotated;

[0057] Specifically, the bottom end of the driving rod 438 is rotatably connected to the inner bottom wall of the limiting seat 432, so that it can only rotate and cannot move up and down. In this state, when the position of the sliding sleeve 434 is fixed, the position of the driving rod 438 is also fixed. Preferably, the fifth spring is fixed on the inner top wall of the sliding sleeve 434, and the bottom end of the fifth spring is fixed with an abutting block, and the bottom end of the abutting block abuts against one end of the driving rod 438 extending into the sliding sleeve 434, so that the driving rod 438 can be abutted in real time during rotation, thereby being kept stable in real time.

[0058] Further, the top and bottom of the outer wall of the holder 431 are provided with vertical sliding slots, and a clamping plate 435 is connected through a vertical sliding block in the vertical sliding slot, one end of the clamping plate 435 is attached to the outer wall of the spinning arc block 433, and the first spring is installed on the vertical sliding block and fixed with the inner wall of the vertical sliding slot;

[0059] Specifically, the first spring is arranged to keep the end of the clamping plate 435 always abutting against and abutting against the outer wall of the spinning arc block 433, and the clamping plate 435 can also gradually reset when the spinning arc block 433 is unfolded and moves inward. In further detail, the outer wall of the clamping plate 435 is on the same ring line with the outer wall of the holder 431, so that it can be attached to the outer wall of the undeformed part of the stainless steel pipe as the outer wall of the holder 431.

[0060] As shown in Figure 2 and Figure 4 , one end of the spinning arc block 433 is fixed with a horizontal sliding rod 436 matched with the horizontal sliding slot, a plurality of guide grooves 437 corresponding to the horizontal sliding rod 436 are formed on the outer wall of the driving rod 438, the horizontal sliding rod 436 is fixedly sleeved with a blocking ring, one side of the blocking ring is fixed with a second spring, and one end of the second spring is connected with one side wall of the horizontal sliding slot;

[0061] Further in detail, in the initial state, one end of the horizontal slide rod 436 abuts against the inner wall of the recessed part of the guide groove 437, when the driving rod 438 rotates, under the action of the gradually protruding inner wall of the guide groove 437, the horizontal slide rod 436 is driven to move outward, and in turn pushes the rotary pressure arc block 433 to move outward, so as to adapt to different rotary pressure depths of the stainless steel pipe, and when the driving rod 438 gradually rotates to the initial state, the horizontal slide rod 436 is gradually reset to the initial state under the driving of the second spring, and the rotary pressure arc block 433 is also gradually reset to the initial state.

[0062] As shown in Figure 5 , the rotary pressure mechanism 40 further comprises end covers 44 clamped at both ends of the holder 431, the end covers 44 are connected with the limiting seat 432 through bolts, the bottom of the lower end cover 44 is threadedly connected with a lower hollow shaft with a threaded groove, and the top of the upper end cover 44 is fixed with an upper hollow shaft matched with the threaded groove, the lower hollow shaft and the upper hollow shaft are respectively inserted into the two bearing seats 422, so that the rotary pressure part 43 is rotatably connected between the two telescopic holders 42.

[0063] Specifically, when two groups of rotary pressure parts 43 need to be combined, the lower hollow shaft of one group of rotary pressure parts 43 is first unscrewed from the threaded groove, and then the upper hollow shaft of the other group of rotary pressure parts 43 is screwed into the threaded groove of the previous group, at this time the two groups of rotary pressure parts 43 are fixed together, and the two end covers 44 in contact are in a state of abutting, it is worth noting that before combination, the rotary pressure arc block 433 is driven by the driving rod 438 to move outward to the top abutting plate 435 top and the holder 431 top, and the bottom abutting plate 435 bottom and the holder 431 bottom are flush.

[0064] Further in detail, the bottom end of the shaft column is rotatably connected with a mounting pipe, the top end of the sliding sleeve 434 penetrates through the upper hollow shaft and is fixed in the mounting pipe, so that the sliding sleeve 434 does not rotate together when the shaft column rotates.

[0065] Specifically, the sliding sleeve 434 is fixed in the mounting pipe through bolts, in this state, the sliding sleeve 434 does not rotate together when the shaft column rotates, and the sliding sleeve 434 also does not rotate together when the shaft column rotates, and the two do not interfere with each other, in particular, in order to fix the sliding sleeve 434 threadedly connected in the limiting seat 432 after rotation, a fixing sleeve is sleeved on the outer surface of the sliding sleeve 434, one end of the fixing sleeve is fixed with the bearing seat 422, and a knob screw is threadedly provided on the outer wall of the fixing sleeve, when the sliding sleeve 434 drives the driving rod 438 to rotate, the knob screw is tightened to make the end abut against the outer wall of the sliding sleeve 434, and in turn the sliding sleeve 434 is further fixed in position, so as to avoid the sliding sleeve 434 loosening under the action of the outer wall, and in turn avoid the driving rod 438 from rotating by itself, and in turn make the rotary pressure arc block 433 keep in position.

[0066] As shown in Figure 1 ,Figure 5 、 Figure 6 and Figure 9 As shown in the figure, the spinning mechanism 40 further comprises a transverse adjustment assembly 50 assembled on the telescopic holder 42, which further adjusts the overall position of the spinning arc block 433 by rotating around the driving rod 438 as the axis;

[0067] The transverse adjustment assembly 50 comprises a support 51 fixed on the bearing seat 422, and a shaft column is rotatably connected in the support 51, and the top end of the shaft column is fixed with a cam member 52, one end of the cam member 52 abuts against the outer wall of the vertical plate 41;

[0068] In further detail, a plurality of positioning screw holes arranged in a circumferential array are formed at the edge of the upper surface of the support 51, and a positioning bolt adapted to the positioning screw hole is threaded through the cam member 52, specifically, by rotating the cam member 52 to gradually abut against the vertical plate 41, the bearing seat 422 is gradually moved to one side under the driving of the reaction force, and then the retainer 431 is synchronously moved to one side, after the rotation of the cam member 52 is completed, the positioning bolt is tightened to fix the position of the cam member 52, and then the position of the bearing seat 422 is fixed, in particular, in order to reinforce the position of the bearing seat 422, a knob bolt is threaded through the surface of the retainer 421, after the positioning bolt is tightened, the knob bolt is again tightened, and the end portion thereof abuts against the bearing seat 422, so as to further fix the position of the bearing seat 422.

[0069] Specifically, the stainless steel pipe spinning machine in working / using:

[0070] 1. Steel pipe clamping: insert the stainless steel pipe into the surface of the placement shaft 21, start the electric hydraulic push rod to drive the extension seat, and make the pipe pressing shaft 22 descend to complete the clamping and fixing;

[0071] 2. Spinning head initialization: adjust the spinning member 43 on the vertical moving mechanism 30 to one side of the steel pipe through the transverse moving mechanism, and then start the electric push rod to drive the spinning member 43 to move to the position where the spinning arc block 433 is located at the stainless steel pipe to be spun;

[0072] 3. Spinning depth setting: rotate the sliding sleeve 434 to adjust the angle of the driving rod 438, and push the horizontal sliding rod 436 by the protruding part of the guide groove 437, so as to move the spinning arc block 433 outward to the required deformation depth;

[0073] 4. Multiple recess processing preparation: if multiple recesses need to be processed, disassemble the lower hollow shaft of one set of spinning members 43, rotate the upper hollow shaft of another set of spinning members 43, and then combine the two sets of spinning members 43 through the end cover 44 to realize the cooperative work of multiple spinning arc blocks 433;

[0074] 5. The automatic spinning execution, the starting motor drives the steel tube rotation, through the transverse moving mechanism to push the spinning arc block 433 to contact with the steel tube in the rotation process, and cooperates with the steel tube rotation to complete the plastic deformation, and resets the spinning part 43 after the spinning is completed.

[0075] The above is only the preferred embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art in the technical range disclosed by the present application, according to the technical scheme and the inventive concept of the present application, equivalent replacement or change, should be covered in the protection scope of the present application.

Claims

1. A stainless steel tube spinning machine comprising a cabinet (10), a steel tube positioning mechanism (20) is equipped on the inner bottom wall of the cabinet (10), a transverse moving mechanism is equipped on the inner top wall of the cabinet (10), a vertical moving mechanism (30) is equipped on the transverse moving mechanism, characterized in that, The vertical moving mechanism (30) is equipped with a spinning mechanism (40); The spinning mechanism (40) comprises a vertical plate (41) fixed on the vertical moving mechanism (30), and a spinning piece (43) is connected to the vertical plate (41) through two telescopic holders (42); The spinning piece (43) comprises a holder (431), a limiting seat (432) is fixed at the center of the holder (431), a spinning arc block (433) is slidably connected to the limiting seat (432) through a horizontal sliding groove, and the spinning arc block (433) is rotationally connected to a driving rod (438) in the limiting seat (432) to realize outward expansion. The spinning mechanism (40) further comprises a transverse adjustment assembly (50) equipped on the telescopic holder (42), and the transverse adjustment assembly (50) is further adjusted in position of the spinning arc block (433) through rotation of the driving rod (438) as the shaft.

2. A stainless steel tube spinning machine according to claim 1, characterized in that, The spinning piece (43) further comprises a sliding sleeve (434) slidably sleeved on the top end of the driving rod (438), an inner thread is engraved on the top of the inner wall of the limiting seat (432), and an outer thread compatible with the inner thread is engraved on the outer wall of the sliding sleeve (434), so that the sliding sleeve (434) can be threadedly connected to the limiting seat (432) after the driving rod (438) is rotated.

3. A stainless steel tube spinning machine according to claim 2, characterized in that The top and bottom of the outer wall of the holder (431) are provided with vertical sliding grooves, a cladding plate (435) is connected to the vertical sliding grooves through vertical sliding blocks, one end of the cladding plate (435) is attached to the outer wall of the spinning arc block (433), a first spring is installed on the vertical sliding block, and the first spring is fixed to the inner wall of the vertical sliding groove.

4. A stainless steel tube spinning machine according to claim 3, wherein One end of the spinning arc block (433) is fixed with a horizontal sliding rod (436) compatible with the horizontal sliding groove, a plurality of guide grooves (437) corresponding to the horizontal sliding rod (436) are formed on the outer wall of the driving rod (438), a resisting ring is fixedly sleeved on the outer surface of the horizontal sliding rod (436), a second spring is fixed on one side of the resisting ring, and one end of the second spring is connected to one side wall of the horizontal sliding groove.

5. A stainless steel tube spinning machine according to claim 4, wherein The spinning mechanism (40) further comprises end covers (44) clamped on both ends of the holder (431), the end covers (44) are connected to the limiting seat (432) through bolts, a lower hollow shaft is threadedly connected to the bottom of the lower end cover (44) through a threaded groove, and an upper hollow shaft is fixed to the top of the upper end cover (44) and compatible with the threaded groove.

6. A stainless steel tube spinning machine according to claim 5, wherein The telescopic holder (42) comprises a holding seat (421) connected to the vertical plate (41), a bearing seat (422) is connected to the holding seat (421) through a third spring, and the lower hollow shaft and the upper hollow shaft are respectively inserted into the two bearing seats (422), so that the spinning piece (43) is rotationally connected between the two telescopic holders (42).

7. A stainless steel tube spinning machine according to claim 6, characterized in that The transverse adjusting assembly (50) comprises a support (51) fixed on the bearing seat (422), a shaft column is rotationally connected in the support (51), a cam part (52) is fixed on the top end of the shaft column, and one end of the cam part (52) abuts against the outer wall of the vertical plate (41).

8. A stainless steel tube spinning machine according to claim 7, characterized in that The bottom end of the shaft column is rotationally connected with a mounting pipe through a bearing, the top end of the sliding sleeve (434) penetrates the upper hollow shaft and is fixed in the mounting pipe, so that the sliding sleeve (434) does not rotate when the shaft column rotates.

9. A stainless steel tube spinning machine according to claim 1, characterized in that, The vertical moving mechanism (30) comprises a mounting seat mounted on the transverse moving mechanism, an electric push rod is fixed on the middle part of the outer wall of the mounting seat, sliding blocks are slidably connected on the two sides of the outer wall of the mounting seat, the sliding blocks are distributed in two groups, a moving seat is fixed on the outer wall of each group of sliding blocks, the vertical plate (41) is fixed on the moving seat, the bottom ends of the two moving seats are fixed with a connecting plate, and one end of the electric push rod is fixed with the connecting plate.

10. A stainless steel tube spinning machine according to claim 1, characterized in that, The steel pipe positioning mechanism (20) comprises a base mounted in the cabinet (10), an installation box is assembled on the base, a placing shaft (21) for inserting and placing the stainless steel pipe is rotationally connected to the middle part of the installation box, a motor is assembled on the top wall in the installation box, the output end of the motor is fixed with the bottom end of the placing shaft (21), an electric hydraulic push rod is fixed on the top wall in the cabinet (10), one end of the electric hydraulic push rod is fixed with an extension seat, and a pipe pressing shaft (22) matched with the placing shaft (21) is rotationally connected to the bottom of the extension seat.

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