High-frequency welding pipe making machine for carbon pipe production

Abstract

The invention relates to the technical field of carbon tube welding, in particular to a high-frequency welding tube making machine for carbon tube production, a welding seat is rotatably mounted on a rotating rail, a welding head for welding is arranged at one end, close to a pair of carbon tube welding seams, of the welding seat, and the mounting thicknesses of templates on three groups of thin plates are gradually reduced in the rotating direction of a rotating disc; the welding seam thickness adjusting device has the beneficial effects that the rotatable thin sheets are arranged, the depth-adjustable templates are arranged on the thin sheets, so that the end parts of the butt joint carbon tubes are pressed on the templates, the width of the welding seam is accurately controlled by utilizing a gap between the templates, the welding seam thickness is adjusted, and the welding seam thickness is adjusted. And then stations are switched through rotation offset, circumferential surrounding of a welding seam is achieved through butt joint of the upper track and the lower track, spot welding fixing is conducted through welding equipment rotating circumferentially, and therefore welding is preprocessed, the welding seam and butt joint precision is ensured, and the performance of pipeline connection after welding is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon tube welding, and specifically provides a high-frequency welding pipe making machine for carbon tube production. Background Art

[0002] In the prior art, 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. During use, longer pipes are required. Therefore, multiple groups of pipes need to be butt-jointed to form a long pipe.

[0003] The butt-joint of pipes is usually connected by a high-frequency welding device. Existing patent: CN114535855A, a butt-welding tool for heating pipes, includes two clamping devices and a pull rod assembly. The pull rod assembly is erected above the two clamping devices. The 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 arranged on the bracket. The second adjustment module includes a movable adjustment module, and the movable adjustment module is 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 move up and down along the movable adjustment module. Both the first clamping assembly and the second clamping assembly include two groups of spaced clamping rings. The clamping rings on the first clamping assembly and the corresponding clamping rings on the second clamping assembly rotate in an open manner around their respective rotating shafts, and after rotation, they are buckled and butted to clamp the heating pipe, or separated and rotated in the reverse direction to disengage from the heating pipe. This invention realizes the clamping and butt-joint of heating pipes laid in the foundation trench and improves the construction efficiency.

[0004] The prior art usually considers the fixation and connection after the butt-joint of a pair of pipes. However, in the actual welding process, in order to ensure the welding accuracy, it is usually necessary to spot-weld and fix a pair of pipes first, and then perform circumferential welding rotation. 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 full welding can be carried out to achieve the sealed butt-joint of the pipes. However, the existing equipment lacks equipment for adjusting the width of the weld, and the pipes to be butted also need to be rotated during the spot welding process. Therefore, the welding accuracy of the weld and the butt-joint accuracy are relatively low, and it is difficult to meet the butt-joint performance requirements of the pipes. Summary of the Invention

[0005] The purpose of the present invention is to provide a high-frequency welding pipe making machine for carbon tube production to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A high-frequency welding pipe-making machine for carbon tube production, including a supporting bracket, on which a pair of carbon tubes are symmetrically placed. The carbon tubes are fixed on the supporting bracket through a limiting component. Above the gap between the pair of carbon tubes, there is an upper frame, on which there is a liftable and adjustable upper track. Below the gap between the pair of carbon tubes, there is a turntable driven by a motor. There are four workstations arranged in a circumferential array on the turntable. Thin plates are installed on three consecutive workstations. On both side walls of the thin plates, templates with adjustable installation depth are symmetrically installed. On the other workstation, there is a telescopically adjustable lower track. The lower track can be docked with the upper track to form a circular transfer track. A welding seat is rotatably installed on the transfer track. At one end of the welding seat close to the weld of the pair of carbon tubes, there is a welding head for welding. The installation thickness of the templates on the three thin plates decreases successively along the rotation direction of the turntable. The end parts of the pair of carbon tubes are used to adjust the weld thickness by pressing on the symmetrically distributed templates.

[0008] Preferably, the lower end of the supporting bracket is provided with supporting columns. The supporting bracket is provided with a V-shaped installation groove. The carbon tubes are placed in the installation groove. At one end of the supporting bracket away from the upper frame, there is an extendable extension frame. The extension frame supports the other end of the carbon tube. One end of the extension frame is provided with an extension rod slidably inserted into the supporting bracket. The extension rod is fixed by a locking part. At the upper end of the installation groove, there is a fastener pressing on the outer wall of the upper end of the carbon tube. The fastener is bolted to the supporting bracket.

[0009] Preferably, a lifting rod is vertically arranged downward on the upper frame. The lower end of the lifting rod is fixedly connected to the upper track. Symmetrically distributed ear seats are arranged on both the upper track and the lower track. A positioning rod is installed at the lower end of the ear seat on the upper track. A positioning hole for cooperating with the positioning rod is arranged in the ear seat on the lower track.

[0010] Preferably, the transfer track is set as a track with a T-shaped cross-section. 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. The welding head is fixed at the end of the first piston rod. An air pipe communicating with its inner cavity is arranged on the side wall of the welding seat. A second micro air pump for controlling the air pressure inside the welding seat is arranged on the air pipe.

[0011] Preferably, a handle is arranged between the air pipe and the second micro air pump. The handle connects the air pipe and the second micro air pump. A control panel is arranged on the handle. Control buttons for controlling the welding head and the second micro air pump are integrally arranged on the control panel.

[0012] Preferably, side frames are arranged on both sides of the welding seat. The side frame includes a pair of symmetrically distributed side plates. The rotating ball is arranged between the pair of side plates. A clamping rod is inserted and installed on the side plates. A spring is sleeved on the clamping rod. An arc plate fitting with the arc outer wall of the rotating ball is arranged at one end of the clamping rod. Both ends of the spring abut between the outer wall of the arc plate and the side plates. The outer wall of the rotating ball and the arc plate are lubricated and fitted.

[0013] Preferably, one side of the turntable is provided with a plugging inner cavity, in which a second piston rod is slidably plugged. The outer end of the second piston rod is fixedly connected to the lower track. A scale is arranged on the outer wall of the second piston rod. An adjusting inner cavity vertically communicating with the plugging inner cavity is arranged on the side wall of the turntable. An adjusting screw rod is rotatably installed in the adjusting inner cavity by threads. One end of the adjusting screw rod extends to the outside of the adjusting inner cavity, and a piston that slidably fits the inner wall of the adjusting inner cavity is arranged at the other end of the adjusting screw rod.

[0014] Preferably, a sector-shaped rotating groove is arranged on the thin plate, and an installation hole penetrates through the sector-shaped rotating groove. A plurality of groups of support arms distributed in a circumferential array are arranged in the installation hole. Air bags are symmetrically arranged on both sides of the support arms. A first micro air pump for controlling the internal pressure of the air bag is arranged at the end of the thin plate. The template is installed in the installation hole and presses on the air bag.

[0015] Preferably, one side of the air bag is fixed on the support arm, and a magnetic sheet is arranged on the other side of the air bag. The template is adsorbed on the magnetic sheet.

[0016] Preferably, the thickness of the sector-shaped rotating groove is smaller than the thickness of the thin plate, the outer diameter of the template is larger than the outer diameter of the carbon tube. After the second piston rod shrinks, the lower track can be rotated to directly below the butt joint position of a pair of carbon tubes under the traction of the turntable.

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

[0018] By arranging a rotatable thin plate and a template with adjustable depth on the thin plate in the present invention, the end of the butt joint carbon tube is pressed on the template, and the width of the weld seam is precisely controlled by using the gap between the templates. Then, by rotating and offsetting to switch the working position, the circumferential surrounding of the weld seam is realized by the butt joint of the upper and lower tracks, and spot welding fixation is carried out by a circumferentially rotating welding device, so as to perform pre-treatment on the welding, ensure the weld seam and butt joint accuracy, and improve the performance of the pipeline connection after welding. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0021] Figure 3 is a schematic structural diagram of the butt joint of the upper and lower tracks of the present invention;

[0022] Figure 4 is Figure 3 an enlarged view of the structure at A in

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

[0024] Figure 6 Schematic diagram of the installation of the three-dimensional structure of the template of the present invention on a thin sheet;

[0025] Figure 7 Schematic diagram of the three-dimensional structure for docking the pipeline of the present invention on a pair of templates to determine the weld;

[0026] Figure 8 Schematic diagram of the three-dimensional structure of the welding seat of the present invention.

[0027] In the figure: 1, supporting bracket; 2, column; 3, extension bracket; 4, locking member; 5, carbon tube; 6, fastener; 7, upper frame; 8, lifting rod; 9, upper track; 10, handle; 11, turntable; 12, motor; 13, thin plate; 14, template; 15, lower track; 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, switching track; 27, welding seat; 28, welding head; 29, scale; 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 manners

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Please refer to Figures 1 to 8 , the present invention provides a technical solution:

[0030] Embodiment 1: A high-frequency welding pipe making machine for carbon tube production, including a supporting bracket 1, a pair of carbon tubes 5 are symmetrically placed on the supporting bracket 1, the carbon tubes 5 are fixed on the supporting bracket 1 through a limiting component, an upper frame 7 is arranged above the gap between the pair of carbon tubes 5, an adjustable upper track 9 is arranged on the upper frame 7, a turntable 11 driven by a motor 12 is arranged below the gap between the pair of carbon tubes 5, four working positions are arranged on the turntable 11 in a circumferential array distribution, thin plates 13 are installed on three consecutive working positions, templates 14 with adjustable installation depth are symmetrically installed on the two side walls of the thin plates 13, the installation thicknesses of the templates 14 on the three thin plates 13 gradually decrease along the rotation direction of the turntable 11, and the weld thickness is adjusted by pressing the ends of the pair of carbon tubes 5 on the symmetrically distributed templates 14.

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

[0032] First, use the support bracket 1 to place a pair of butt-jointed carbon tubes 5 so that the ends of the pair of carbon tubes 5 are precisely aligned. Then, determine the width of the weld according to the size of the carbon tubes 5. Select the thin plate 13 at the corresponding workstation according to the determined weld width. Use the turntable 11 to rotate the thin plate 13 at this position to the gap between the butt-joints of the pair of carbon tubes 5. Drive the ends of the carbon tubes 5 to slide laterally and fit against the outer wall of the template 14. Thus, the gap between the pair of carbon tubes 5 is the width of the weld. Then, fix the position of the carbon tubes 5 and drive the template 14 to contract to facilitate the rotation of the turntable 11 for workstation switching.

[0033] On another set of workstations, there is an extendable and adjustable lower track 15. The lower track 15 can be docked with the upper track 9 to form a circular transfer track 26. A welding seat 27 is rotatably installed on the transfer track 26. At one end of the welding seat 27 close to the weld of the pair of carbon tubes 5, there is a welding head 28 for welding.

[0034] After the weld is determined, rotate the lower track 15 workstation to directly below the weld through the rotation of the turntable 11. Use the telescopic adjustment to dock the upper and lower tracks to form the transfer track 26. Then, use the welding seat 27 and the welding head 28 rotatably installed on the transfer track 26 to perform circumferential spot welding, thereby forming the pre-treatment for the corresponding welding of the pipeline.

[0035] Working principle: First, set the thin plates 13 at three workstations, and install templates 14 with adjustable installation depths on the thin plates 13, thereby forming a range of weld widths adapted to each set of templates 14.

[0036] For example, the weld width distributions corresponding to the three sets of templates 14 are: 0.5 - 1 cm; 1 - 1.5 cm; 1.5 - 2 cm. Determine the optimal weld to be 1.25 cm according to the size of the carbon tubes 5. At this time, use the turntable 11 to rotate the corresponding thin plate 13 between the pair of carbon tubes 5. Then, drive the ends of the carbon tubes 5 to move towards the template 14 and fit against it, thereby determining the width of the weld between the pair of carbon tubes 5. After determination, fix the position of the carbon tubes 5 to avoid deviation. Then, contract the template 14 and drive the turntable 11 to rotate. Since the three sets of templates 14 are gradually decreasingly distributed in the rotation direction, the subsequent rotating templates 14 will not cause interference to the rotation of the turntable 11. The turntable 11 rotates the lower track 15 to directly below the weld.

[0037] Then, a telescopic drive is used to dock the upper and lower tracks to form a circular transfer track 26. By rotating the welding seat 27 mounted on the transfer track 26, the circumferential position adjustment on the weld seam is realized. The welding head 28 is used to perform spot welding on the weld seam, forming a pre-fixation for the connection of a pair of carbon tubes 5.

[0038] Embodiment 2: On the basis of Embodiment 1, a support column 2 is provided at the lower end of the support bracket 1. A V-shaped mounting groove is provided on the support bracket 1. The carbon tube 5 is placed in the mounting groove. An extension bracket 3 with telescopic mounting is provided at one end of the support bracket 1 away from the upper frame 7. The extension bracket 3 supports the other end of the carbon tube 5. One end of the extension bracket 3 is provided with an extension rod that is slidably inserted into the support bracket 1. The extension rod is fixed by a locking member 4. A fastener 6 that presses against the outer wall of the upper end of the carbon tube 5 is provided at the upper end of the mounting groove. The fastener 6 is bolted to the support bracket 1.

[0039] By providing the extension bracket 3, the extension support for the longer carbon tube 5 is realized, avoiding the warping of one end of the carbon tube 5 or the tendency of upward warping caused by the center of gravity shift, resulting in deformation. By providing the fastener 6, the position fixation of the carbon tube 5 after driving the weld seam is realized.

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

[0041] By providing the lifting rod 8, the lifting drive of the upper track 9 is realized. The lifting height of the second piston rod 22 is controlled by using the scale 29 and the adjustment screw rod 23 to ensure that the center of the lower track 15 coincides with the center of the weld seam. Since the sizes of the carbon tubes 5 are different, the center heights of the ends of the carbon tubes 5 are different. According to the size of the carbon tube 5, the cooperation of the adjustment screw rod 23 and the scale 29 is used to accurately adjust the height of the second piston rod 22 to ensure the coincidence of the centers. The accurate docking of the upper and lower tracks is realized by using the cooperation of the positioning rod 24 and the positioning hole 25, so as to ensure that the track 26 coincides with the center of the weld seam, enabling the welding seat 27 to rotate precisely along the weld seam in a circle.

[0042] Embodiment 3: On the basis of Embodiment 2, the rail 26 is set as a T-shaped cross-section rail. Rotating balls 32 extending into the front and rear groove of the T-shaped rail 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 at the end of the first piston rod 36. An air pipe 30 communicating with its inner cavity is arranged on the side wall of the welding seat 27. A second micro air pump 37 for controlling the air pressure inside the welding seat 27 is arranged on the air pipe 30; A handle 10 is arranged 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 arranged on the handle 10. Control buttons for controlling the welding head 28 and the second micro air pump 37 are integrally arranged on the control panel 38.

[0043] The adjustment of the circumferential position of the welding seat 27 on the rail 26 is controlled by the handle 10. At the same time, the extension length of the welding head 28 is controlled by using the control panel 38 to ensure that the welding head 28 extends to the weld position and control the welding of the welding head 28.

[0044] Side frames 31 are arranged on both sides of the welding seat 27. The side frame 31 includes a pair of side plates symmetrically distributed. The rotating ball 32 is arranged between the pair of side plates. A clamping rod 33 is inserted into the side plate. A spring 35 is sleeved on the clamping rod 33. An arc plate 34 fitting the arc outer wall of the rotating ball 32 is arranged at one end of the clamping rod 33. Both ends of the spring 35 abut between 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.

[0045] By setting the elastically clamped rotating ball 32 and the T-shaped cross-section rail 26, the welding seat 27 is rotatably installed on the rail 26, and at the same time, its smooth rotation on the rail 26 is ensured. With the elastic pressing of the spring 35, the falling off of the rotating ball 32 is avoided.

[0046] Embodiment 4: On the basis of Embodiment 3, a fan-shaped rotating groove 17 is arranged on the thin plate 13. A mounting hole 18 runs through the fan-shaped rotating groove 17. A plurality of groups of support arms 20 distributed in a circumferential array are arranged in the mounting hole 18. Air bags 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 air bags 19 is arranged at the end of the thin plate 13. The template 14 is installed in the mounting hole 18. The template 14 is pressed on the air bags 19. One side of the air bag 19 is fixed on the support arm 20. A magnetic sheet 39 is arranged on the other side of the air bag 19. The template 14 is adsorbed on the magnetic sheet 39.

[0047] The thickness of the fan-shaped rotating groove 17 is smaller than the thickness of the thin plate 13. The outer diameter of the template 14 is larger than the outer diameter of the carbon tube 5. After the second piston rod 22 contracts, the lower rail 15 can be rotated to directly below the butt joint position of a pair of carbon tubes 5 under the traction of the turntable 11.

[0048] The adjustable installation of the template 14 is realized by using the airbag 19. The internal pressure of the airbag 19 is controlled by the first micro air pump 21, so as to control the installation depth of the template 14, and then realize the precise adjustment of the weld width. The convenient installation and disassembly between the template 14 and the airbag 19 are realized by using the magnetic sheet 39. The fan-shaped rotating groove 17 is used to facilitate the smooth rotation of the thin sheet 13 in the weld, preventing rotation interference.

[0049] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-frequency welding pipe-making machine for carbon tube production, including a supporting bracket (1), on which a pair of carbon tubes (5) are symmetrically placed, and the carbon tubes (5) are fixed on the supporting bracket (1) through a limiting component. Above the gap between the pair of carbon tubes (5), there is an upper frame (7), and it is characterized in that: On the upper frame (7), there is a liftable and adjustable upper track (9). Below the gap between the pair of carbon tubes (5), there is a turntable (11) driven by a motor (12). On the turntable (11), there are four workstations distributed in a circumferential array. Among them, three consecutive workstations are equipped with thin plates (13). On both side walls of the thin plate (13), templates (14) with adjustable installation depth are symmetrically installed. On the other workstation, there is a telescopically adjustable lower track (15). The lower track (15) can be docked with the upper track (9) to form a circular transfer track (26). On the transfer track (26), a welding seat (27) is rotatably installed. At one end of the welding seat (27) close to the weld of the pair of carbon tubes (5), there is a welding head (28) for welding. The installation thickness of the templates (14) on the three thin plates (13) gradually decreases along the rotation direction of the turntable (11). The end parts of the pair of carbon tubes (5) adjust the weld thickness by pressing on the symmetrically distributed templates (14).

2. The high-frequency welding pipe-making machine for carbon tube production according to claim 1, wherein: At the lower end of the supporting bracket (1), there are supporting columns (2). On the supporting bracket (1), there is a V-shaped installation groove. The carbon tubes (5) are placed in the installation groove. At one end of the supporting bracket (1) away from the upper frame (7), there is an extendable extension frame (3). The extension frame (3) supports the other end of the carbon tube (5). One end of the extension frame (3) is provided with an extension rod slidably inserted into the supporting bracket (1), and the extension rod is fixed by a locking member (4). At the upper end of the installation groove, there is a fastening member (6) pressing on the outer wall of the upper end of the carbon tube (5), and the fastening member (6) is bolted to the supporting bracket (1).

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

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

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

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

7. The high-frequency welding pipe-making machine for carbon tube production according to claim 6, wherein: An insertion cavity is provided on one side of the turntable (11). A second piston rod (22) is slidably inserted in the insertion cavity. The outer end of the second piston rod (22) is fixedly connected to the lower track (15). A scale (29) is provided on the outer wall of the second piston rod (22). An adjustment cavity vertically communicating with the insertion cavity is provided on the side wall of the turntable (11). An adjustment screw (23) is rotatably installed in the adjustment cavity by threading. One end of the adjustment screw (23) extends to the outside of the adjustment cavity, and a piston that slidably fits against the inner wall of the adjustment cavity is provided at the other end of the adjustment screw (23).

8. A high-frequency welding pipe-making machine for carbon tube production according to claim 7, characterized in that: A sector-shaped rotating groove (17) is provided on the thin plate (13). An installation hole (18) runs through the sector-shaped rotating groove (17). A plurality of groups of support arms (20) distributed in a circumferential array are provided in the installation hole (18). Air bags (19) are symmetrically provided on both sides of the support arms (20). A first micro air pump (21) for controlling the internal pressure of the air bags (19) is provided at the end of the thin plate (13). The template (14) is installed in the installation hole (18), and the template (14) is pressed against the air bags (19).

9. A high-frequency welding pipe-making machine for carbon tube production according to claim 8, characterized in that: One side of the air bag (19) is fixed to the support arm (20), and a magnetic sheet (39) is provided on the other side of the air bag (19). The template (14) is adsorbed on the magnetic sheet (39).

10. A high-frequency welding pipe-making machine for carbon tube production according to claim 8, characterized in that: The thickness of the sector-shaped rotating groove (17) is smaller than the thickness of the thin plate (13). The outer diameter of the template (14) is larger than the outer diameter of the carbon tube (5). After the second piston rod (22) contracts, the lower track (15) can be rotated to directly below the butt joint position of the pair of carbon tubes (5) under the traction of the turntable (11).

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