A high-frequency welding pipe making machine for carbon tube production

Abstract

The application relates to the technical field of carbon pipe welding, in particular to a high-frequency welding pipe making machine for carbon pipe production, a welding seat is rotatably arranged on a rotating rail, a welding head for welding is arranged on one end of the welding seat close to a pair of carbon pipe weld seams, the thickness of the templates arranged on three groups of thin plates gradually decreases along the rotating direction of the rotating disc, the end portions of the pair of carbon pipes are adjusted in thickness by being pressed on the symmetrically-distributed templates, and the beneficial effects are as follows: the rotatable thin plates are arranged, the depth-adjustable templates are arranged on the thin plates, the end portions of the butt-jointed carbon pipes are pressed on the templates, the width of the weld seams is accurately controlled by utilizing the gaps between the templates, the work stations are switched by rotating and offsetting, the upper and lower rails are butted to realize the circumferential surrounding of the weld seams, the spot welding is fixed by the circumferentially-rotating welding equipment, the pre-treatment of the welding is realized, the welding seam and butt-joint precision are ensured, and the performance of the pipe connection after welding is improved.

Description

Technical Field

[0001] This invention relates to the field of carbon tube welding technology, specifically to a high-frequency welding tube-making machine for carbon tube production. Background Technology

[0002] In order to improve the performance of steel pipes, materials such as carbon fiber are usually added to form carbon steel pipes. However, the length of carbon steel pipes is limited. In the process of use, longer pipes are required, so multiple sets of pipes need to be connected to form a long pipe.

[0003] Pipeline butt welding is typically performed using high-frequency welding equipment. Existing patent CN114535855A describes a tool for butt welding heating pipelines, comprising two clamping devices and a pull rod assembly. The pull rod assembly is mounted on top of the two clamping devices. Each clamping device includes a support assembly, a first clamping assembly, and a second clamping assembly. The support assembly includes a bracket, a first adjustment module, and a second adjustment module mounted on the bracket. The second adjustment module includes a movable adjustment module slidably connected to the bracket. The first clamping assembly can move up and down along the first adjustment module, and the second clamping assembly can also move up and down along the movable adjustment module. Both the first and second clamping assemblies include two sets of spaced clamps. The clamps on the first and second clamping assemblies rotate openly around their respective axes, engaging to clamp the heating pipeline after rotation, or disengaging by rotating in the opposite direction to detach from the heating pipeline. This invention enables the clamping and butt welding of heating pipelines laid in trenches, improving construction efficiency.

[0004] Existing technologies typically consider the fixation and connection of a pair of pipes after they are joined. However, in actual welding processes, in order to ensure welding accuracy, it is usually necessary to spot weld the pair of pipes before rotating them in a circular weld. Therefore, before full welding, it is necessary to first determine the width of the weld, then perform circumferential spot welding between the welds, and finally perform full welding to achieve a sealed connection of the pipes. However, existing equipment lacks the means to adjust the weld width, and the pipes being joined also need to be rotated during the spot welding process. As a result, the weld accuracy and connection accuracy are low, making it difficult to meet the pipe connection performance requirements. Summary of the Invention

[0005] The purpose of this invention is to provide a high-frequency welding tube-making machine for carbon tube production, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A high-frequency welding tube-making machine for carbon nanotube production includes a support frame on which a pair of carbon nanotubes are symmetrically placed. The carbon nanotubes are fixed to the support frame by a limiting component. An upper frame is provided above the gap between the pair of carbon nanotubes, and an adjustable upper rail is provided on the upper frame. A motor-driven turntable is provided below the gap between the pair of carbon nanotubes. The turntable has four stations arranged in a circumferential array. Thin plates are installed on three consecutive sets of stations, and templates with adjustable installation depth are symmetrically installed on the two side walls of the thin plates. An adjustable lower rail is installed on the other set of stations. The lower rail can be connected with the upper rail to form a circular rotating track. A welding seat is rotatably installed on the rotating track. A welding head is provided at the end of the welding seat near the weld seam of the pair of carbon nanotubes. The installation thickness of the templates on the three sets of thin plates decreases successively along the rotation direction of the turntable. The weld seam thickness of the pair of carbon nanotubes is adjusted by pressing the ends of the symmetrically distributed templates.

[0008] Preferably, the lower end of the support frame is provided with a support column, and the support frame is provided with a V-shaped mounting groove. The carbon tube is placed in the mounting groove. The end of the support frame away from the upper frame is provided with a telescopic extension frame. The extension frame is supported on the other end of the carbon tube. One end of the extension frame is provided with an extension rod that is slidably inserted into the support frame. The extension rod is fixed by a locking member. The upper end of the mounting groove is provided with a fastener that is pressed against the outer wall of the upper end of the carbon tube. The fastener is bolted to the support frame.

[0009] Preferably, a lifting rod is vertically downwardly installed on the upper frame, and the lower end of the lifting rod is fixedly connected to the upper rail. Symmetrically distributed ear seats are provided on both the upper and lower rails. A positioning rod is installed at the lower end of the ear seat on the upper rail, and a positioning hole is provided on the ear seat in the lower rail to cooperate with the positioning rod.

[0010] Preferably, the rotating track is configured as a T-shaped track, and rotating balls extending into the front and rear side grooves of the T-shaped track are rotatably installed on both sides of the welding seat. A first piston rod is pneumatically inserted into the welding seat, and the welding head is fixed to the end of the first piston rod. An air pipe communicating with its inner cavity is provided on the side wall of the welding seat, and a second micro air pump for controlling the internal air pressure of the welding seat is provided on the air pipe.

[0011] Preferably, a handle is provided between the air tube and the second micro air pump. The handle connects the air tube and the second micro air pump. A control panel is provided on the handle, and the control panel integrates control buttons for controlling the welding head and the second micro air pump.

[0012] Preferably, the welding seat is provided with side frames on both sides. The side frames include a pair of symmetrically distributed side plates. The rotating ball is disposed between the pair of side plates. A clamping rod is inserted and installed on the side plate. A spring is sleeved on the clamping rod. One end of the clamping rod is provided with an arc plate that fits against the outer arc wall of the rotating ball. The two ends of the spring abut against the outer wall of the arc plate and the side plate. The outer wall of the rotating ball and the arc plate are lubricated and fit together.

[0013] Preferably, a plug-in cavity is provided on one side of the turntable, and a second piston rod is slidably plugged into the plug-in cavity. The outer end of the second piston rod is fixedly connected to the lower rail. A scale is provided on the outer wall of the second piston rod. An adjustment cavity is provided on the side wall of the turntable, which is vertically connected to the plug-in cavity. An adjustment screw is threadedly installed in the adjustment cavity. One end of the adjustment screw extends to the outside of the adjustment cavity, and the other end of the adjustment screw is provided with a piston that slides against the inner wall of the adjustment cavity.

[0014] Preferably, the thin plate is provided with a fan-shaped rotating groove, and a mounting hole is provided through the fan-shaped rotating groove. Multiple sets of support arms are arranged in a circumferential array in the mounting hole. Airbags are symmetrically arranged on both sides of the support arms. A first micro air pump for controlling the internal pressure of the airbag is provided at the end of the thin plate. The template is installed in the mounting hole and pressed onto the airbag.

[0015] Preferably, one side of the airbag is fixed to the support arm, and the other side of the airbag is provided with a magnetic sheet, on which the template is adsorbed.

[0016] Preferably, the thickness of the fan-shaped rotating groove is less than the thickness of the thin plate, the outer diameter of the template is greater than the outer diameter of the carbon tube, and after the second piston rod retracts, the lower track can rotate under the traction of the turntable to directly below the docking position of a pair of carbon tubes.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] This invention uses a rotatable sheet with an adjustable-depth template on it to press the ends of the carbon nanotubes onto the template. The gap between the templates is used to precisely control the width of the weld. The work station is switched by rotation and offset, and the weld is circumferentially surrounded by the connection of the upper and lower tracks. Spot welding is performed by a circumferentially rotating welding device to fix the weld. This pretreatment ensures the accuracy of the weld and the connection, and improves the performance of the pipe connection after welding. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a front view of the turntable of the present invention;

[0021] Figure 3 This is a schematic diagram of the upper and lower track docking structure of the present invention;

[0022] Figure 4 for Figure 3 Enlarged view of the structure at point A in the middle;

[0023] Figure 5 This is a schematic diagram of the three-dimensional structure of the turntable of the present invention;

[0024] Figure 6 This is a schematic diagram of the three-dimensional structure of the template of the present invention mounted on a thin sheet;

[0025] Figure 7 This is a three-dimensional structural diagram of the pipe of the present invention when the weld seam is determined by the butt joint on a pair of templates;

[0026] Figure 8 This is a three-dimensional structural diagram of the welding seat of the present invention.

[0027] In the diagram: 1. Support frame; 2. Column; 3. Extension frame; 4. Locking element; 5. Carbon tube; 6. Fastener; 7. Upper frame; 8. Lifting rod; 9. Upper rail; 10. Handle; 11. Turntable; 12. Motor; 13. Thin plate; 14. Template; 15. Lower rail; 16. Ear seat; 17. Fan-shaped rotating groove; 18. Mounting hole; 19. Airbag; 20. Support arm; 21. First micro air pump; 22. Second piston rod; 23. Adjusting screw; 24. Positioning rod; 25. Positioning hole; 26. Rotating rail; 27. Welding seat; 28. Welding head; 29. ​​Ruler; 30. Air pipe; 31. Side frame; 32. Rotating ball; 33. Clamping rod; 34. Arc plate; 35. Spring; 36. First piston rod; 37. Second micro air pump; 38. Control panel; 39. Magnetic sheet. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figures 1 to 8 The present invention provides a technical solution:

[0030] Example 1: A high-frequency welding tube-making machine for carbon tube production includes a support frame 1, on which a pair of carbon tubes 5 are symmetrically placed. The carbon tubes 5 are fixed to the support frame 1 by a limiting component. An upper frame 7 is provided above the gap between the pair of carbon tubes 5. An adjustable upper track 9 is provided on the upper frame 7. A turntable 11 driven by a motor 12 is provided below the gap between the pair of carbon tubes 5. The turntable 11 is provided with four workstations arranged in a circumferential array. Thin plates 13 are installed on three consecutive workstations. Adjustable installation depth templates 14 are symmetrically installed on the two side walls of the thin plates 13. The installation thickness of the templates 14 on the three sets of thin plates 13 decreases successively along the rotation direction of the turntable 11. The ends of the pair of carbon tubes 5 are pressed onto the symmetrically distributed templates 14 to adjust the weld thickness.

[0031] Since the installation depth of the template 14 is adjustable, each set of templates 14 corresponds to a range of weld widths. Furthermore, the thickness of the template 14 is set to decrease along the rotation direction, so that after the weld width is determined, the rotation and switching of the workstations on the turntable 11 will not cause mutual interference.

[0032] First, a pair of carbon tubes 5 are placed on the support frame 1 to ensure that the ends of the carbon tubes 5 are precisely aligned. Then, the width of the weld is determined according to the size of the carbon tubes 5. Based on the determined weld width, a thin plate 13 is selected at the corresponding station. The turntable 11 is used to rotate the thin plate 13 at this position to the gap between the pair of carbon tubes 5. The ends of the carbon tubes 5 are driven to slide laterally and fit against the outer wall of the template 14, so that the gap between the pair of carbon tubes 5 is the width of the weld. Then, the position of the carbon tubes 5 is fixed, and the template 14 is driven to retract, so that the turntable 11 can rotate to switch stations.

[0033] Another set of workstations is equipped with a retractable and adjustable lower rail 15. The lower rail 15 can be connected with the upper rail 9 to form a circular turntable 26. A welding seat 27 is rotatably installed on the turntable 26. A welding head 28 for welding is provided at one end of the welding seat 27 near the weld seam of a pair of carbon tubes 5.

[0034] After the weld is determined, the lower rail 15 position is rotated to the position directly below the weld by rotating the turntable 11. The upper and lower rails are connected by telescopic adjustment to form the turntable 26. Then, the welding seat 27 and welding head 28 installed on the turntable 26 are used to perform circumferential spot welding, thus forming the pretreatment for welding the corresponding pipe.

[0035] Working principle: First, three sets of thin plates 13 are set, and templates 14 with adjustable installation depth are set on the thin plates 13, so that each set of templates 14 corresponds to a range of weld width.

[0036] For example, the weld width distribution corresponding to the three sets of templates 14 is: 0.5-1cm; 1-1.5cm; 1.5-2cm. The optimal weld width is determined to be 1.25cm based on the size of the carbon tube 5. At this time, the turntable 11 is used to rotate the corresponding sheet 13 between a pair of carbon tubes 5, and then the end of the carbon tube 5 is driven to move towards the template 14 and fit together, thereby determining the width of the weld of a pair of carbon tubes 5. After determination, the position of the carbon tube 5 is fixed to avoid displacement. Then the template 14 is contracted and the turntable 11 is driven to rotate. Since the three sets of templates 14 are gradually decreasing in distribution along the rotation direction, the subsequent rotation of the template 14 will not cause interference to the rotation of the turntable 11. The turntable 11 rotates the lower track 15 to the position directly below the weld.

[0037] Then, the telescopic drive is used to connect the upper and lower tracks to form a circumferential rotating track 26. The circumferential position of the welding seat 27 installed on the rotating track 26 is adjusted by rotating it. The welding head 28 is used to spot weld the weld to form a pre-fixed connection of a pair of carbon tubes 5.

[0038] Example 2: Based on Example 1, a support column 2 is provided at the lower end of the support frame 1, and a V-shaped mounting groove is provided on the support frame 1. The carbon tube 5 is placed in the mounting groove. A telescopic extension frame 3 is provided at the end of the support frame 1 away from the upper frame 7. The extension frame 3 is supported at the other end of the carbon tube 5. An extension rod is provided at one end of the extension frame 3 and is slidably inserted into the support frame 1. The extension rod is fixed by a locking member 4. A fastener 6 is provided at the upper end of the mounting groove and is pressed against the outer wall of the upper end of the carbon tube 5. The fastener 6 is bolted to the support frame 1.

[0039] The extension frame 3 is used to extend and support the longer carbon tube 5, so as to avoid deformation caused by the offset of the center of gravity causing one end of the carbon tube 5 to tilt up or have an upward tilting tendency. The fastener 6 is used to fix the position of the carbon tube 5 after driving the weld.

[0040] A lifting rod 8 is vertically installed on the upper frame 7. The lower end of the lifting rod 8 is fixedly connected to the upper rail 9. Symmetrically distributed ear seats 16 are provided on both the upper rail 9 and the lower rail 15. A positioning rod 24 is installed at the lower end of the ear seat 16 on the upper rail 9. The ear seat 16 in the lower rail 15 is provided with a positioning hole 25 that mates with the positioning rod 24. An insertion cavity is provided on one side of the turntable 11. A second piston rod 22 is slidably inserted into the insertion cavity. The outer end of the second piston rod 22 is fixedly connected to the lower rail 15. A scale 29 is provided on the outer wall of the second piston rod 22. An adjustment cavity is provided on the side wall of the turntable 11, which is vertically connected to the insertion cavity. An adjustment screw 23 is threadedly installed in the adjustment cavity. One end of the adjustment screw 23 extends to the outside of the adjustment cavity. The other end of the adjustment screw 23 is provided with a piston that slides against the inner wall of the adjustment cavity.

[0041] The upper track 9 is driven to rise and fall by setting up the lifting rod 8. The lifting height of the second piston rod 22 is controlled by the scale 29 and the adjusting screw 23 to ensure that the center of the lower track 15 coincides with the center of the weld. Since the carbon tubes 5 have different sizes, the center height of the ends of the carbon tubes 5 is different. According to the size of the carbon tubes 5, the height of the second piston rod 22 is precisely adjusted by the cooperation of the adjusting screw 23 and the scale 29 to ensure that the centers coincide. The positioning rod 24 and the positioning hole 25 are used to achieve precise docking of the upper and lower tracks, thereby ensuring that the track 26 coincides with the center of the weld, so that the welding seat 27 can achieve precise circumferential rotation along the weld.

[0042] Example 3: Based on Example 2, the rotating rail 26 is set as a T-shaped track. Rotating balls 32 extending into the front and rear side grooves of the T-shaped track are rotatably installed on both sides of the welding seat 27. A first piston rod 36 is pneumatically inserted into the welding seat 27. The welding head 28 is fixed to the end of the first piston rod 36. An air pipe 30 communicating with its inner cavity is provided on the side wall of the welding seat 27. A second micro air pump 37 for controlling the internal air pressure of the welding seat 27 is provided on the air pipe 30. A handle 10 is provided between the air pipe 30 and the second micro air pump 37. The handle 10 connects the air pipe 30 and the second micro air pump 37. A control panel 38 is provided on the handle 10. The control panel 38 integrates control buttons for controlling the welding head 28 and the second micro air pump 37.

[0043] The handle 10 controls the adjustment of the circumferential position of the welding seat 27 on the track 26, while the control panel 38 controls the extension length of the welding head 28 to ensure that the welding head 28 extends to the weld position and controls the welding of the welding head 28.

[0044] Both sides of the welding seat 27 are provided with side frames 31. The side frames 31 include a pair of symmetrically distributed side plates. The rotating ball 32 is disposed between the pair of side plates. A clamping rod 33 is inserted and installed on the side plate. A spring 35 is sleeved on the clamping rod 33. One end of the clamping rod 33 is provided with an arc plate 34 that fits against the outer arc of the rotating ball 32. The two ends of the spring 35 abut against the outer wall of the arc plate 34 and the side plate. The outer wall of the rotating ball 32 and the arc plate 34 are lubricated and fitted together.

[0045] By setting up an elastically clamping rotating ball 32 and a T-shaped cross-section rotating rail 26, the welding seat 27 is rotatably mounted on the rotating rail 26, while ensuring its smooth rotation on the rotating rail 26. With the elastic compression of the spring 35, the rotating ball 32 is prevented from falling off.

[0046] Example 4: Based on Example 3, a fan-shaped rotating groove 17 is provided on the thin plate 13, and a mounting hole 18 is provided through the fan-shaped rotating groove 17. Multiple sets of support arms 20 are arranged in a circumferential array in the mounting hole 18. Airbags 19 are symmetrically arranged on both sides of the support arms 20. A first micro air pump 21 for controlling the internal pressure of the airbag 19 is provided at the end of the thin plate 13. The template 14 is installed in the mounting hole 18 and pressed onto the airbag 19. One side of the airbag 19 is fixed to the support arm 20, and a magnetic sheet 39 is provided on the other side of the airbag 19. The template 14 is adsorbed onto the magnetic sheet 39.

[0047] The thickness of the fan-shaped rotating groove 17 is less than the thickness of the thin plate 13, and the outer diameter of the template 14 is greater than the outer diameter of the carbon tube 5. After the second piston rod 22 retracts, the lower track 15 can rotate under the traction of the turntable 11 to directly below the docking position of the pair of carbon tubes 5.

[0048] The template 14 is adjustable by using an airbag 19. The internal pressure of the airbag 19 is controlled by the first micro air pump 21, thereby controlling the installation depth of the template 14 and achieving precise adjustment of the weld width. The template 14 and the airbag 19 are conveniently installed and disassembled by using a magnetic sheet 39. The fan-shaped rotating groove 17 facilitates the smooth rotation of the sheet 13 in the weld and prevents rotation interference.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-frequency welding tube-making machine for carbon tube production, comprising a support frame (1), on which a pair of carbon tubes (5) are symmetrically placed, the carbon tubes (5) being fixed to the support frame (1) by a limiting component, and an upper frame (7) being provided above the gap between the pair of carbon tubes (5), characterized in that: The upper frame (7) is equipped with an adjustable upper rail (9), and a turntable (11) driven by a motor (12) is provided below the gap between a pair of carbon tubes (5). The turntable (11) is equipped with four workstations arranged in a circular array. Thin plates (13) are installed on three consecutive workstations. Adjustable installation depth templates (14) are symmetrically installed on the two side walls of the thin plates (13). An adjustable lower rail (15) is installed on another workstation. The lower rail (15) can be connected with the upper rail (9) to form a circular rotating rail (26). A welding seat (27) is rotatably installed on the rotating rail (26). A welding head (28) for welding is provided at one end of the welding seat (27) near the weld of a pair of carbon tubes (5). The installation thickness of the templates (14) on the three sets of thin plates (13) decreases gradually along the rotation direction of the turntable (11). The ends of a pair of carbon tubes (5) are pressed onto the symmetrically distributed templates (14) to adjust the weld thickness. The thin plate (13) is provided with a fan-shaped rotating groove (17), and a mounting hole (18) is provided through the fan-shaped rotating groove (17). Multiple sets of support arms (20) are arranged in a circular array in the mounting hole (18). Airbags (19) are symmetrically arranged on both sides of the support arm (20). A first micro air pump (21) for controlling the internal pressure of the airbag (19) is provided at the end of the thin plate (13). The template (14) is installed in the mounting hole (18) and pressed onto the airbag (19). One side of the airbag (19) is fixed on the support arm (20), and a magnetic sheet (39) is provided on the other side of the airbag (19). The template (14) is adsorbed onto the magnetic sheet (39).

2. The high-frequency welding tube-making machine for carbon tube production according to claim 1, characterized in that: The lower end of the support frame (1) is provided with a support column (2), and the support frame (1) is provided with a V-shaped mounting groove. The carbon tube (5) is placed in the mounting groove. The end of the support frame (1) away from the upper frame (7) is provided with a telescopic extension frame (3). The extension frame (3) is supported on the other end of the carbon tube (5). One end of the extension frame (3) is provided with an extension rod that is slidably inserted into the support frame (1). The extension rod is fixed by a locking member (4). The upper end of the mounting groove is provided with a fastener (6) that is pressed against the outer wall of the upper end of the carbon tube (5). The fastener (6) is bolted to the support frame (1).

3. The high-frequency welding tube-making machine for carbon tube production according to claim 1, characterized in that: A lifting rod (8) is vertically downward on the upper frame (7). The lower end of the lifting rod (8) is fixedly connected to the upper rail (9). Symmetrically distributed ear seats (16) are provided on both the upper rail (9) and the lower rail (15). A positioning rod (24) is installed at the lower end of the ear seat (16) on the upper rail (9). The ear seat (16) on the lower rail (15) is provided with a positioning hole (25) that cooperates with the positioning rod (24).

4. The high-frequency welding tube-making machine for carbon tube production according to claim 1, characterized in that: The rotating rail (26) is configured as a T-shaped track. Rotating balls (32) extending into the front and rear side grooves of the T-shaped track are rotatably installed on both sides of the welding seat (27). A first piston rod (36) is pneumatically inserted into the welding seat (27). The welding head (28) is fixed to the end of the first piston rod (36). An air pipe (30) communicating with its inner cavity is provided on the side wall of the welding seat (27). A second micro air pump (37) for controlling the internal air pressure of the welding seat (27) is provided on the air pipe (30).

5. A high-frequency welding tube-making machine for carbon tube production according to claim 4, characterized in that: A handle (10) is provided between the air tube (30) and the second micro air pump (37). The handle (10) connects the air tube (30) and the second micro air pump (37). A control panel (38) is provided on the handle (10). The control panel (38) integrates control buttons for controlling the welding head (28) and the second micro air pump (37).

6. The high-frequency welding tube-making machine for carbon tube production according to claim 4, characterized in that: Both sides of the welding seat (27) are provided with side frames (31). The side frames (31) include a pair of symmetrically distributed side plates. The rotating ball (32) is set between the pair of side plates. A clamping rod (33) is inserted and installed on the side plate. A spring (35) is sleeved on the clamping rod (33). One end of the clamping rod (33) is provided with an arc plate (34) that fits against the outer arc of the rotating ball (32). The two ends of the spring (35) abut against the outer wall of the arc plate (34) and the side plate. The outer wall of the rotating ball (32) and the arc plate (34) are lubricated and fit together.

7. A high-frequency welding tube-making machine for carbon tube production according to claim 6, characterized in that: A plug-in cavity is provided on one side of the turntable (11), and a second piston rod (22) is slidably plugged into the plug-in cavity. The outer end of the second piston rod (22) is fixedly connected to the lower rail (15). A scale (29) is provided on the outer wall of the second piston rod (22). An adjustment cavity is provided on the side wall of the turntable (11) that is vertically connected to the plug-in cavity. An adjustment screw (23) is screwed and rotatably installed in the adjustment cavity. One end of the adjustment screw (23) extends to the outside of the adjustment cavity, and the other end of the adjustment screw (23) is provided with a piston that slides against the inner wall of the adjustment cavity.

8. A high-frequency welding tube-making machine for carbon tube production according to claim 7, characterized in that: The thickness of the fan-shaped rotating groove (17) is less than the thickness of the thin plate (13), the outer diameter of the template (14) is greater than the outer diameter of the carbon tube (5), and after the second piston rod (22) retracts, the lower track (15) can rotate under the traction of the turntable (11) to the position directly below the docking position of a pair of carbon tubes (5).

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