Automatic processing equipment for boron tubes

Abstract

This application relates to an automatic processing device for Bourdon tubes, comprising a base, a forming column fixed to the base, a bending mechanism for deforming a straight tube, and a cutting mechanism for cutting the straight tube. The forming column is further provided with a lifting mechanism for moving the Bourdon tube upwards. The lifting mechanism includes several lifting blocks slidably disposed on the outer wall of the forming column and a sliding rod coaxially passing through the forming column. The upper end of each lifting block abuts against the lower end of the Bourdon tube, and one end of each lifting block extends into the forming column and is fixed to the sliding rod. The upper end of the sliding rod is positioned above the upper surface of the forming column. After the bending mechanism shapes the Bourdon tube and the cutting mechanism separates the Bourdon tube from the straight tube, the lifting blocks apply force to the Bourdon tube, thereby moving it upwards to above the forming column, whereby the Bourdon tube can be directly grasped and unloaded.

Description

Technical Field

[0001] This application relates to the technical field of pipe bending machines, and in particular to an automatic processing device for Bourdon tubes. Background Technology

[0002] In the production process of Bourdon tubes, a straight pipe is usually bent into a semi-circular arc by a pipe bending machine. Then, the Bourdon tube is cut and separated from the straight pipe. After the separation is completed, the Bourdon tube is removed from the pipe bending machine, thus completing the processing of the Bourdon tube.

[0003] During the bending process of a Bourdon tube, pressure is typically applied to the straight tube using a movable pusher, causing it to wrap around a cylindrical forming element. The forming element then limits the bending radius, allowing the tube to be bent into an arc. Removing the formed Bourdon tube from the forming element requires moving it upwards to detach it. However, gloves are worn during this process, reducing dexterity, especially since the Bourdon tube fits tightly onto the forming element with a small gap, making removal quite cumbersome.

[0004] Therefore, a new technical solution is needed to address the above problems. Summary of the Invention

[0005] In order to facilitate the removal of Bourdon tubes from the forming column after forming, this application provides an automatic processing device for Bourdon tubes.

[0006] This application provides an automatic processing equipment for Bourdon tubes, which adopts the following technical solution:

[0007] An automated processing device for Bourdon tubes includes a base, a forming column fixed on the base, a bending mechanism for pushing the straight tube to deform, and a cutting mechanism for cutting the straight tube.

[0008] The bending mechanism includes a turntable rotatably connected to the base, a pusher fixed to the turntable, and a forming drive that drives the turntable to rotate. The axis of the turntable coincides with the axis of the forming column, and a gap is left between the pusher and the forming column to accommodate a straight tube.

[0009] The cutting mechanism includes a slider slidably mounted on a base, a cutting machine mounted on the slider, and a cutting drive component that drives the slider closer to the forming column;

[0010] The forming column is also provided with a lifting mechanism that drives the Bourdon tube to move upward. The lifting mechanism includes a number of lifting blocks that are slidably disposed on the outer wall of the forming column and a sliding rod that is coaxially disposed on the forming column. The upper end of the lifting block is used to abut against the lower end of the Bourdon tube, and one end of the lifting block extends into the forming column and is fixed to the sliding rod. The upper end of the sliding rod is disposed above the upper end surface of the forming column.

[0011] By adopting the above technical solution, after the bending mechanism shapes the Bourdon tube and the cutting mechanism separates the Bourdon tube from the straight tube, the lifting block applies force to the Bourdon tube to move it upward, so that the Bourdon tube is moved above the forming column, thereby enabling the Bourdon tube to be directly pinched and the Bourdon tube to be unloaded.

[0012] Optionally: The forming column is provided with a plurality of lifting elastic elements that push the lifting block to move upward. The forming column is also provided with a limiting mechanism that limits the movement of the lifting block. The limiting mechanism includes a hook rotatably connected to the forming column and a limiting elastic element that limits the position of the hook. The upper end of the hook is hooked to the lower end of the sliding rod. The upper end of the hook is provided with a guide slope. The sliding rod abuts against the guide slope and pushes the hook to move.

[0013] By adopting the above technical solution, the lifting block is limited by the limiting mechanism, so that the position of the lifting block will not change during the Bourdon tube forming process, and the Bourdon tube will not be affected during the forming process.

[0014] Optionally, the forming column is further provided with a disengagement mechanism for pushing the hook to rotate. The disengagement mechanism includes a rotating rod rotatably connected to the forming column and a pushing block disposed on the rotating rod. The rotation axis of the rotating rod coincides with the axis of the forming column. The rotating rod is connected to the turntable and rotates synchronously with the turntable. The pushing block is used to connect with the lower end of the hook to push the hook to rotate.

[0015] By adopting the above technical solution, after the turntable drives the pusher to rotate and form the Bourdon tube, it can drive the hook to disengage from the lifting block, so that the lifting block can automatically push the Bourdon tube upward.

[0016] Optional: The turntable is coaxially provided with an installation groove, and an internal gear ring is coaxially fixed in the installation groove. An external gear ring is coaxially rotated in the forming column. Two meshing gears are also rotatably connected in the forming column. The gears mesh with the internal gear ring and the external gear ring respectively. The external gear ring is connected to the rotating rod and rotates synchronously with the rotating rod.

[0017] By adopting the above technical solution, the force of the turntable is transmitted to the rotating rod through the internal gear ring, external gear ring and gears, so as to realize the synchronous rotation of the rotating rod and the turntable, thereby driving the hook to rotate after the turntable rotates to the correct position.

[0018] Optionally: The lower end of the hook is also rotatably connected to a movable piece, the rotation axis of the movable piece is parallel to the rotation axis of the hook, and the lower end of the hook is also fixed with a baffle, the baffle is set on the side of the movable piece facing away from the rotation direction of the turntable, and the pushing block abuts against the side of the movable piece near the baffle, thereby pushing the hook to disengage from the sliding rod.

[0019] By adopting the above technical solution, after the turntable completes the processing of the Bourdon tube, during the process of the turntable driving the pusher to reset, the pusher pushes the hook to rotate, thereby realizing the lifting block to unload the Bourdon tube. Thus, the position of the Bourdon tube is not easily moved when it is not cut from the straight tube.

[0020] Optionally, the sliding rod is also provided with a push mechanism for manually rotating the hook. The push mechanism includes a push rod passing through the sliding rod, a moving block disposed on the push rod, and a push elastic element that pushes the push rod upward. The moving block abuts against the guide inclined surface and pushes the hook to rotate.

[0021] By adopting the above technical solution, when the turntable is not rotating but the lifting block needs to move upward, the hook can be disengaged from the lifting block by applying force to the push rod, so that the lifting block can move upward.

[0022] Optionally: The outer wall of the forming column is provided with several lifting grooves in the circumferential direction. The lifting block is placed in the lifting groove and slides vertically. An extension piece is also fixed at the upper end of the lifting block. The extension piece is embedded in the lifting groove and slides to fill the lifting groove. The outer wall of the extension piece has the same curvature as the outer wall of the forming column.

[0023] By adopting the above technical solution, the opening of the lifting groove is closed by the extension plate, making it difficult for debris to enter the forming column through the lifting groove, thereby making the operation of the mechanism inside the forming column less affected.

[0024] Optionally, the base is further provided with a positioning mechanism that limits the stopping position of the straight tube. The positioning mechanism includes a positioning seat on the base, a positioning block rotatably connected to the positioning seat, and a positioning elastic element that limits the position of the positioning block. The rotation axis of the positioning block is located on the side of the positioning block away from the bending direction of the straight tube. The positioning block is used to abut against the end of the straight tube.

[0025] By adopting the above technical solution, after the straight tube is moved to abut against the positioning block, the pushing component pushes the straight tube to form a Bourdon tube. The positioning block is used for positioning during the positioning process of the deformed straight tube. The positioning block can rotate during the deformation of the straight tube, so it will not affect the deformation of the straight tube.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. After the Bourdon tube is formed and cut off from the straight tube, the Bourdon tube is moved upward using the lifting block. Then, the upper and lower ends of the Bourdon tube can be pinched directly to remove the Bourdon tube from the forming column. During the removal of the Bourdon tube, force can be applied directly to the Bourdon tube, making the process of unloading the Bourdon tube more convenient.

[0028] 2. The rotating rod is driven to rotate by a turntable, and a movable piece is set below the hook. When the rotating rod rotates in the opposite direction to the forming direction of the Bourdon tube, it can drive the hook to rotate, thereby realizing the automatic lifting of the lifting block. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of an embodiment of this application;

[0030] Figure 2 This is a schematic diagram illustrating a curved structure, as shown in the embodiments of this application.

[0031] Figure 3 This is a schematic diagram illustrating the internal structure of the molded column in an embodiment of this application;

[0032] Figure 4 for Figure 3 Enlarged view of part A;

[0033] Figure 5 This is a schematic diagram illustrating the structure of the propulsion mechanism in an embodiment of this application.

[0034] In the diagram, 1. Base; 11. Forming column; 111. Lifting groove; 12. Baffle; 2. Bending mechanism; 21. Turntable; 211. Mounting groove; 22. Pushing component; 23. Forming drive component; 24. Extension block; 3. Cutting mechanism; 31. Slider; 32. Cutting machine; 33. Cutting drive component; 4. Lifting mechanism; 41. Lifting block; 42. Sliding rod; 421. Pushing groove; 43. Lifting elastic component; 44. Extension piece; 45. 5. Extension rod; 6. Limiting mechanism; 7. Hook; 8. Limiting elastic element; 9. Guide slope; 10. Movable piece; 11. Baffle plate; 12. Unhooking mechanism; 13. Rotating rod; 14. Pushing block; 15. External gear ring; 16. Gear; 27. Internal gear ring; 18. Pushing mechanism; 19. Pushing rod; 20. Moving block; 31. Pushing elastic element; 42. Positioning mechanism; 53. Positioning seat; 64. Positioning block; 75. Positioning elastic element. Detailed Implementation

[0035] The present application will be further described in detail below with reference to the accompanying drawings.

[0036] This application discloses an automatic processing device for Bourdon tubes, such as... Figure 1As shown, it includes a base 1, a forming column 11 disposed on the base 1, a bending mechanism 2 for pushing the straight tube to deform, and a cutting mechanism 3 for cutting the straight tube. When the straight tube abuts against the side wall of the forming column 11, the bending mechanism 2 bends the straight tube around the forming column 11 to form a Bourdon tube. Then the cutting mechanism 3 cuts the formed Bourdon tube from the straight tube to complete the processing of the Bourdon tube.

[0037] like Figure 2 and Figure 3 As shown, the bending mechanism 2 includes a turntable 21 connected to the base 1, a pusher 22 fixed to the turntable 21, and a forming drive 23 that drives the turntable 21 to rotate. The turntable 21 has a coaxial mounting groove 211. The turntable 21 is fitted over the forming column 11, with its upper end lower than the upper surface of the base 1. The axis of the turntable 21 coincides with the axis of the forming column 11. An extension block 24 is fixed to the upper end of the turntable 21, and the upper surface of the extension block 24 is flush with the upper surface of the base 1. The pusher 22 is cylindrical and rotatably connected to the upper end of the extension block 24. The shortest distance between the sidewall of the pusher 22 and the sidewall of the forming column 11 is equal to the diameter of the straight tube, allowing the straight tube to be placed between the forming column 11 and the pusher 22, thereby causing the pusher 22 to deform the straight tube. In this embodiment, the molding drive component 23 is a servo motor. The molding drive component 23 is fixed to the base 1 with bolts. The free end of the molding drive component 23 is connected to the turntable 21 through a reducer and a chain, thereby driving the turntable 21 to rotate back and forth.

[0038] The cutting mechanism 3 includes a slider 31 slidably mounted on the base 1, a cutting machine 32 mounted on the slider 31, and a cutting drive 33 that drives the slider 31 closer to the forming column 11. The extension line of the cutting wheel on the cutting machine 32 passes through the axis of the forming column 11. In this embodiment, the cutting drive 33 is a lead screw slide. The cutting drive 33 is fixed to the base 1 with bolts, and the free end of the cutting drive 33 is fixed to the slider 31 with bolts.

[0039] like Figure 3As shown, the forming column 11 has an upward opening. A baffle 12 is bolted to the upper opening of the forming column 11. A lifting mechanism 4 is also provided inside the forming column 11 to drive the formed Bourdon tube upward. The lifting mechanism 4 includes several lifting blocks 41 slidably disposed on the outer wall of the forming column 11 and a sliding rod 42 coaxially passing through the baffle 12. Several lifting grooves 111 communicating with the inner cavity are circumferentially opened on the outer wall of the forming column 11. The lifting grooves 111 penetrate the upper end face of the forming column 11. The lifting blocks 41 are embedded in the lifting grooves 111 and move vertically. The upper end face of the lifting block 41 is flush with the upper end face of the base 1. The upper end face of the lifting block 41 abuts against the lower end face of the Bourdon tube, thereby driving the Bourdon tube to move upward. One end of the lifting block 41, which is located inside the forming column 11, is integrally formed with an extension rod 45. The end of the extension rod 45 away from the lifting block 41 is fixed to the side wall of the sliding rod 42. After the Bourdon tube is formed, an upward force is applied to the sliding rod 42, which causes the sliding rod 42 to drive the lifting block 41 to move upward. This allows the lifting block 41 to move the Bourdon tube upward to a height above the forming column 11, thus enabling the Bourdon tube to be directly pinched and unloaded, making the unloading process more convenient.

[0040] The inner cavity of the forming column 11 is also circumferentially provided with a plurality of lifting elastic elements 43 that push the lifting block 41 upward. In this embodiment, the lifting elastic elements 43 are springs. The lifting elastic elements 43 are located close to the inner wall of the forming column 11. The upper end of the lifting elastic element 43 abuts against the extension rod 45, and the lower end of the lifting elastic element 43 abuts against the bottom surface of the inner cavity of the forming column 11.

[0041] like Figure 4 As shown, when the lifting block 41 does not need to move upward, it is necessary to overcome the elastic force of the lifting elastic member 43. Therefore, a limiting mechanism 5 is also provided inside the forming column 11 to limit the upward movement of the lifting block 41. The limiting mechanism 5 includes a hook 51 rotatably connected inside the forming column 11 and a limiting elastic member 52 for limiting the position of the hook 51. The rotation axis of the hook 51 is horizontally arranged, and its upper end is hooked on an extension rod. A guide slope 53 is also provided at the upper end of the hook 51. The end of the guide slope 53 near the hooking position of the hook 51 is inclined downward, so that when the extension rod moves downward and abuts against the guide slope 53, it can push the hook 51 to move. Thus, when the extension rod moves to a position lower than the hooking position of the hook 51, the hook 51 can hook above the extension rod. In this embodiment, the limiting elastic element 52 is a torsion spring. The axis of the limiting elastic element 52 coincides with the rotation axis of the hook 51. One end of the limiting elastic element 52 is connected to the forming column 11, and the other end of the limiting elastic element 52 is connected to the hook 51.

[0042] like Figure 3As shown, the forming column 11 is also equipped with a disengagement mechanism 6 that automatically disengages the hook 51 from the extension rod. The disengagement mechanism 6 includes a rotating rod 61 rotatably connected to the inner cavity of the forming column 11 and a pushing block 62 disposed on the rotating rod 61. The pushing block 62 is used to contact the hook 51 and push the hook 51 to rotate. Both the rotating rod 61 and the pushing block 62 are disposed below the extension rod 45, and the rotation axis of the rotating rod 61 coincides with the axis of the forming column 11. The rotating rod 61 is connected to the turntable 21, and is thus driven by the turntable 21 to rotate. After the turntable 21 forms the straight tube, the turntable 21 continues to rotate, thereby using the pushing block 62 to drive the hook 51 to rotate, causing the hook 51 to disengage from the extension rod.

[0043] An external gear ring 63 is coaxially fixed to the lower end of the rotating rod 61. Two meshing gears 64 are also rotatably connected inside the forming cavity, with one gear 64 meshing with the external gear ring 63. An internal gear ring 65 is also coaxially fixed in the mounting groove 211 of the turntable 21. The internal gear ring 65 meshes with the other gear 64, so that the rotating rod 61 can rotate synchronously during the rotation of the turntable 21. After the turntable 21 rotates to the position and the Bourdon tube is formed, the rotating rod 61 can also rotate to the position and push the hook 51 to rotate.

[0044] like Figure 4 As shown, since the Bourdon tube needs to be cut from the straight tube after forming, directly pushing the Bourdon tube upwards would affect the cutting. Therefore, the lower end of the hook 51 is rotatably connected to a movable piece 54, the rotation axis of which is parallel to the rotation axis of the hook 51. The lower end of the hook 51 is also integrally formed with a baffle 55, which is located on the side of the movable piece 54 facing away from the rotation direction of the turntable 21. Thus, when the pushing block 62 rotates in the opposite direction to the forming direction of the Bourdon tube, the movable piece 54 can drive the hook 51 to rotate, thereby disengaging the hook 51 from the extension rod. This allows the lifting block 41 to move upwards under the push of the spring. During the upward movement of the Bourdon tube, the turntable 21 gradually returns to its original position, facilitating the forming of the next Bourdon tube.

[0045] like Figure 5As shown, since there may be situations during use where it is necessary to move the lifting block 41 upwards directly, a pushing mechanism 7 for manually pushing the hook 51 to rotate is also provided on the sliding rod 42. The pushing mechanism 7 includes a pushing rod 71 passing through the sliding rod 42, a moving block 72 disposed on the pushing rod 71, and a pushing elastic element 73 for driving the pushing rod 71 to move upwards. The sliding rod 42 is open at the top, and a pushing groove 421 communicating with its inner cavity is provided on its side wall. The moving block 72 is disposed in the pushing groove 421 and slides vertically. The lower end of the moving block 72 is used to abut against the guide inclined surface 53 and push the hook 51 to rotate, thereby separating the hook 51 from the extension rod. In this embodiment, the pushing elastic element 73 is a spring. The pushing elastic element 73 is disposed on the inner wall of the sliding rod 42. The upper end of the pushing elastic element 73 abuts against the pushing rod 71, and the lower end of the pushing elastic element 73 abuts against the bottom surface of the inner cavity of the sliding rod 42. The upper end of the push rod 71 is set lower than the upper end surface of the sliding rod 42, so that when force is applied to the sliding rod 42 to drive the lifting block 41 to move downward, the push rod 71 will not be subjected to force.

[0046] like Figure 3 As shown, in order to prevent debris from falling directly into the lifting groove 111, an extension piece 44 is fixed to the upper end of the lifting block 41. The extension piece 44 is embedded in the lifting groove 111 and moves vertically to fill the lifting groove 111. The side wall of the extension piece 44 away from the axis of the forming column 11 has the same thickness as the outer wall of the forming column 11, so that the extension piece 44 and the outer wall of the forming column 11 form a flat structure.

[0047] like Figure 1 As shown, the base 1 is also equipped with a positioning mechanism 8 for limiting the position of the straight tube. The positioning mechanism 8 includes a positioning seat 81 fixed to the base 1 with bolts, a positioning block 82 rotatably connected to the positioning seat 81, and a positioning elastic element 83 for limiting the position of the positioning block 82. The rotation axis of the positioning block 82 is vertically arranged, and the rotation axis of the positioning block 82 is located on the side of the positioning block 82 away from the bending direction of the straight tube. Therefore, when the straight tube is bent by the pressure applied by the pushing member 22, the straight tube can drive the positioning block 82 to rotate, so that the movement of the straight tube during the bending process is not limited. In this embodiment, the positioning elastic element 83 is a torsion spring. The axis of the positioning elastic element 83 coincides with the rotation axis of the positioning block 82. One end of the positioning elastic element 83 is connected to the positioning block 82, and the other end of the positioning elastic element 83 is connected to the positioning seat 81. The positioning elastic element 83 is arranged perpendicular to the side wall of the positioning block 82 that abuts against the straight tube, so that the positioning block 82 can limit the position of the straight tube.

[0048] The implementation principle of this embodiment is as follows: the straight tube moves toward the positioning block 82, so that the straight tube abuts against the positioning block 82. Then, the turntable 21 is rotated, thereby driving the pushing member 22 to rotate. The pushing member 22 drives the straight tube to move around the forming column 11 to form a Bourdon tube. Then, the cutting machine 32 separates the Bourdon tube from the straight tube. After the turntable 21 rotates in the opposite direction, the pushing block 62 applies force to the movable piece 54, thereby driving the hook 51 to rotate, so that the hook 51 is disengaged from the extension rod. The extension rod and its connected lifting block 41 move upward under the action of elastic force, moving the Bourdon tube upward, so that the Bourdon tube can be easily removed from the forming column 11.

[0049] The embodiments described in this specific implementation are 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. An apparatus for automatic processing of a Boudoin tube, characterized in that: It includes a base (1), a forming column (11) fixed on the base (1), a bending mechanism (2) for pushing the straight tube to deform, and a cutting mechanism (3) for cutting the straight tube; The bending mechanism (2) includes a turntable (21) rotatably connected to the base (1), a pusher (22) fixed to the turntable (21), and a forming drive (23) that drives the turntable (21) to rotate. The axis of the turntable (21) coincides with the axis of the forming column (11), and a gap is left between the pusher (22) and the forming column (11) to accommodate the straight tube. The cutting mechanism (3) includes a slider (31) slidably disposed on the base (1), a cutting machine (32) disposed on the slider (31), and a cutting drive (33) that drives the slider (31) to approach the forming column (11); The forming column (11) is also provided with a lifting mechanism (4) for driving the Bourdon tube to move upward. The lifting mechanism (4) includes a plurality of lifting blocks (41) slidably disposed on the outer wall of the forming column (11) and a sliding rod (42) coaxially disposed on the forming column (11). The upper end of the lifting block (41) is used to abut against the lower end of the Bourdon tube. One end of the lifting block (41) extends into the forming column (11) and is fixed to the sliding rod (42). The upper end of the sliding rod (42) is disposed higher than the upper end surface of the forming column (11). The forming column (11) is provided with a plurality of lifting elastic elements (43) for pushing the lifting blocks (41) to move upward. The forming column (11) is also provided with a limiting mechanism (5) for limiting the movement of the lifting blocks (41). The limiting mechanism (5) includes a hook (51) rotatably connected to the forming column (11). The molded column (11) is equipped with a limiting elastic element (52) for limiting the position of the hook (51). The upper end of the hook (51) is hooked to the lower end of the sliding rod (42). The upper end of the hook (51) is provided with a guide slope (53). The sliding rod (42) abuts against the guide slope (53) and pushes the hook (51) to move. The molded column (11) is also provided with a disengagement mechanism (6) for pushing the hook (51) to rotate. The disengagement mechanism (6) includes a rotating rod (61) rotatably connected to the molded column (11) and a push block (62) provided on the rotating rod (61). The rotation axis of the rotating rod (61) coincides with the axis of the molded column (11). The rotating rod (61) is connected to the turntable (21) and rotates synchronously with the turntable (21). The push block (62) is used to connect with the lower end of the hook (51) to push the hook (51) to rotate.

2. The automatic processing equipment for Bourdon tubes according to claim 1, characterized in that: The turntable (21) has a coaxial mounting groove (211) and an internal gear ring (65) is coaxially fixed in the mounting groove (211). An external gear ring (63) is coaxially rotated in the forming column (11). Two meshing gears (64) are also rotatably connected in the forming column (11). The gears (64) mesh with the internal gear ring (65) and the external gear ring (63) respectively. The external gear ring (63) is connected to the rotating rod (61) and rotates synchronously with the rotating rod (61).

3. The automatic processing apparatus of a boron tube according to claim 1, characterized in that: The lower end of the hook (51) is also rotatably connected to a movable piece (54). The rotation axis of the movable piece (54) is parallel to the rotation axis of the hook (51). The lower end of the hook (51) is also fixed with a baffle (55). The baffle (55) is located on the side of the movable piece (54) facing away from the rotation direction of the turntable (21). The pushing block (62) abuts against the side of the movable piece (54) near the baffle (55) to push the hook (51) away from the sliding rod (42).

4. The apparatus according to claim 3, wherein: The sliding rod (42) is also provided with a push mechanism (7) for manually rotating the hook (51). The push mechanism (7) includes a push rod (71) passing through the sliding rod (42), a moving block (72) provided on the push rod (71), and a push elastic element (73) for pushing the push rod (71) to move upward. The moving block (72) abuts against the guide inclined surface (53) and pushes the hook (51) to rotate.

5. The automatic processing equipment for Bourdon tubes according to claim 1, characterized in that: The outer wall of the forming column (11) is provided with several lifting grooves (111) in the circumferential direction. The lifting block (41) is placed in the lifting groove (111) and slides vertically. An extension piece (44) is fixed at the upper end of the lifting block (41). The extension piece (44) is embedded in the lifting groove (111) and slides to fill the lifting groove (111). The outer wall of the extension piece (44) has the same curvature as the outer wall of the forming column (11).

6. The automatic processing equipment for Bourdon tubes according to claim 1, characterized in that: The base (1) is also provided with a positioning mechanism (8) that limits the stopping position of the straight tube. The positioning mechanism (8) includes a positioning seat (81) provided on the base (1), a positioning block (82) rotatably connected to the positioning seat (81), and a positioning elastic element (83) that limits the position of the positioning block (82). The rotation axis of the positioning block (82) is located on the side of the positioning block (82) away from the bending direction of the straight tube. The positioning block (82) is used to abut against the end of the straight tube.

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