Ultrasonic butt welding device

Abstract

The utility model relates to an ultrasonic butt welding device which comprises a rotating mechanism and a welding mechanism. The rotating mechanism comprises a rotating disc, a bearing support and a rotating transmission part. The turntable is coaxially and rotationally assembled on one side of a bearing hole of the bearing bracket; a sliding ring sleeve matched with the bearing hole is arranged in the bearing hole, and a through hole type conductive sliding ring matched with the sliding ring sleeve is coaxially assembled in the sliding ring sleeve and can drive the pipe to rotate; the rotary transmission part drives the turntable to rotate around the central axis of the bearing hole; the welding mechanism comprises an ultrasonic welding part, a welding transmission part and a welding base, the welding transmission part is assembled on the welding base, and the welding base is fixed to the end face of the rotary disc and rotates along with the rotary disc; the welding transmission part is connected with the ultrasonic welding part and drives the ultrasonic welding part; a pipe penetrates through the via hole type conductive slip ring, and a welding head of the ultrasonic welding part abuts against the surface of the pipe for welding. The ultrasonic welding device is an integrated ultrasonic welding device capable of efficiently achieving winding and welding of the aluminum film strip of the high-barrier flexible hydrogen conveying pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of ultrasonic welding, and more specifically, to an ultrasonic butt welding device. Background Art

[0002] In the development of high-barrier flexible hydrogen transmission pipes, it is necessary to effectively block hydrogen penetration. Therefore, when the aluminum film strip is wrapped around the surface of the inner layer of the pipe, the aluminum strip intermittent cutting ultrasonic butt welding technology is performed to achieve the purpose of blocking gas leakage.

[0003] The prior art discloses an ultrasonic welding machine, including a shell, the bottom of the shell is fixedly connected with self-locking universal wheels near the four corners, and the top of the shell is fixedly connected with side panels near the left and right sides, and the tops of the two side panels are fixedly connected with a top plate. Through the direct cooperation of the first electric push rod, the second electric push rod, the arc-shaped fixed plate, the driven gear, the transmission gear, the rotating gear, the square tube and the movable gear plate, it is convenient to clamp the pipeline and make the opposite ends fit together, so as to facilitate the development of welding work, and through the direct cooperation of the driving motor, the square tube belt and the square rod, it is convenient to drive the two pipelines to flip, so that the two pipelines can be welded in all directions, improving the welding efficiency. However, the ultrasonic welding machine cannot wrap and weld the surface material of the pipe. Therefore, an integrated ultrasonic welding device that can efficiently realize the winding and welding of the aluminum film strip of the high-barrier flexible hydrogen transmission pipe is needed. Utility Model Content

[0004] The utility model aims to overcome the shortcomings of winding and welding of aluminum film strips of high-barrier flexible hydrogen transmission pipes in the prior art and to provide an ultrasonic butt welding device.

[0005] In order to solve the above technical problems, the utility model provides an ultrasonic butt welding device, which wraps the barrier flexible hydrogen transmission pipe with aluminum film strip and welds it to the surface of the pipe at the same time, thereby realizing the integration of winding and welding of the aluminum film strip of the high barrier flexible hydrogen transmission pipe.

[0006] An ultrasonic butt welding device comprises a rotating mechanism and a welding mechanism; the rotating mechanism comprises a turntable, a bearing bracket and a rotating transmission part; the turntable is coaxially rotatably assembled on one side of a bearing hole of the bearing bracket; a matching slip ring sleeve is installed in the bearing hole, and a matching through-hole conductive slip ring is coaxially installed in the slip ring sleeve to drive the pipe to rotate; the rotating transmission part drives the turntable to rotate around the central axis of the bearing hole; the welding mechanism comprises an ultrasonic welding part, a welding transmission part and a welding base, the welding transmission part is installed on the welding base, and the welding base is fixed to the end face of the turntable and rotates with the turntable; the welding transmission part is connected to the ultrasonic welding part to drive the ultrasonic welding part; the pipe passes through the through-hole conductive slip ring, and the welding head of the ultrasonic welding part abuts against the surface of the pipe for welding.

[0007] The welding mechanism is assembled on the rotating mechanism and can rotate with the rotating mechanism to achieve 360-degree welding of the aluminum film strip on the surface of the pipe. After the pipe passes through the through-hole conductive slip ring of the rotating mechanism, the through-hole conductive slip ring can be controlled to drive the pipe to transmit, so that the aluminum film strip is wrapped around the surface of the pipe, and a traction machine can be added at one end of the pipe to pull the pipe to move horizontally, and the surface of the pipe is covered with the aluminum film strip to effectively block hydrogen penetration. Because the winding of the aluminum film strip under the action of the traction machine will form a spiral aluminum film strip connection line on the surface of the pipe, it is necessary to set an ultrasonic welding device that can rotate 360 ​​degrees around the pipe to weld and dock the aluminum film strip at the connection line, so as to achieve an efficient pipe aluminum film strip winding and welding process.

[0008] Furthermore, the welding transmission part includes a welding transmission motor, a screw and a welding transmission base; the welding transmission base is provided with a nut matching the screw and assembled on the screw, and the output end of the welding transmission motor is connected to the screw to drive the screw to rotate and drive the transmission base to move along the screw.

[0009] The welding transmission part is used to control the size of the contact pressure between the welding head and the pipe surface and the contact position between the welding head and the pipe, so as to adapt to the winding and welding work of different types of pipes and improve the adaptability of the equipment. The welding head is assembled on the welding transmission base, and a nut matching the screw rod is fixed at the bottom of the welding transmission base and assembled on the screw rod. The screw rod is connected to the output end of the welding transmission motor. The feed amount of the welding joint is realized by controlling the forward and reverse rotation of the welding transmission motor; with the cooperation of the welding transmission motor, efficient and accurate control can be achieved.

[0010] Furthermore, the welding base is provided with a guide rail, and the transmission base is provided with a guide groove matched with the guide rail. Providing the guide groove and the guide rail can reduce the friction between the welding base and the transmission base, making them smoother when moving relative to each other, reducing wear and prolonging service life.

[0011] Furthermore, a first pulley is provided at the output end of the welding drive motor, and a second pulley is provided at one end of the screw rod. The first pulley and the second pulley are connected by a matching belt to realize belt transmission. The welding drive motor drives the screw rod to rotate through belt transmission. Since the belt transmission method has a smooth transmission, the softness and elasticity of the belt can effectively reduce the impact and vibration during the transmission process, thereby providing a more stable power output, achieving smooth operation, and making the equipment run more smoothly; since the belt transmission structure is simple, it is relatively convenient in installation and maintenance, which reduces the overall cost of use. In addition, it has the characteristics of easy maintenance. If it is necessary to achieve high-precision feeding of the ultrasonic welding head, the welding drive motor and the screw rod can be connected by gear transmission. The screw rod can be accurately advanced and retracted by a certain distance during self-rotation through its own thread. In addition, the gear transmission has the characteristics of high precision, so the feeding accuracy can be further improved when using gear transmission.

[0012] Furthermore, a protective cover for protecting the belt drive is provided at the outer wall of the welding transmission base where the first and second pulleys are assembled. The protective cover is provided with a cavity matching the belt, the first and second pulleys, and can be detachably assembled on the outer wall of the welding transmission base. The protective cover can effectively protect the belt drive from unnecessary maintenance caused by dust accumulation in the air.

[0013] Furthermore, the welding head is in the shape of a truncated cone, and the side surface is against the outer surface of the pipe, exerting a certain pressure on the aluminum film strip on the surface of the pipe, and achieving butt welding under the action of ultrasonic waves.

[0014] Furthermore, the rotary transmission part includes a rotary transmission motor, a third pulley is installed at the output end of the rotary transmission motor, a fourth pulley is fixedly installed at one end of the turntable connected to the bearing bracket, and the rotary transmission motor connects the third pulley and the fourth pulley through a belt to drive the turntable to rotate.

[0015] The rotating transmission part is a component that drives the welding structure to rotate. The rotating transmission motor is fixed on the bearing bracket. The third pulley is assembled on the output end of the rotating transmission motor as a driving wheel. The fourth pulley is fixed on the end face of the turntable as a driven wheel, so that the turntable rotates with the fourth pulley.

[0016] Furthermore, it also includes a transmission mechanism; the transmission mechanism includes a transmission base frame, a base frame transmission part and a mobile frame, the transmission base frame is rectangular, and the transmission base frame is connected to the mobile frame by a sliding assembly; the base frame transmission part connects the transmission base frame and the mobile frame to drive the mobile frame to move; the mobile frame is assembled on the top of the transmission base frame, and the rotating mechanism is assembled on the top of the mobile frame.

[0017] The transmission mechanism serves as the base of the rotating mechanism and the welding mechanism, and the height of the above two mechanisms can be adjusted. Since the aluminum film strip wrapping welding of the pipe is carried out under the action of the traction machine, the welding mechanism is assembled on the top of the transmission chassis and can move in the horizontal direction under the action of the chassis transmission part to perform butt welding on different parts of the pipe, thereby improving the adaptability of the device.

[0018] Furthermore, the chassis transmission part includes a chassis motor, a transmission rod and a transmission nut, and the transmission nut is fixed to the mobile frame; the transmission rod cooperates with the transmission nut, the output end of the chassis motor is connected to the transmission rod and drives the transmission rod to rotate around the central axis, driving the mobile frame to move along the transmission rod.

[0019] The chassis motor is fixed on the mobile frame, and drives the transmission rod to rotate around the central axis through a pulley drive or a gear drive, thereby driving the mobile frame fixed with a transmission nut on the transmission rod to move along the axis to achieve horizontal movement of the mobile frame.

[0020] Furthermore, the transmission chassis is provided with a transmission rail, and a transmission groove matching the transmission rail is provided at the bottom of the mobile frame, and the mobile frame moves along the transmission rail; limit rubber blocks and photoelectric panels are provided at both ends of the transmission rail, and the photoelectric panel is connected to the chassis motor through a photoelectric switch signal.

[0021] The matched transmission rails and transmission grooves can enable the mobile frame to move smoothly on the transmission chassis, reducing the friction between the two components; at the same time, photoelectric panels are arranged at both ends of the transmission rails, and the photoelectric panels are connected to the photoelectric switch signals, and the photoelectric switch is electrically connected to the chassis motor. When the mobile frame moves to the end of the transmission rail, the photoelectric switch controls the chassis motor to stop working, preventing the mobile frame from derailing and falling; in addition, the limit rubber blocks arranged at both ends of the transmission rails can effectively reduce the collision of the mobile frame.

[0022] Compared with the prior art, the utility model has the following beneficial effects: the welding mechanism is assembled on the rotating mechanism and can rotate with the rotating mechanism to achieve 360-degree welding of the aluminum film strip on the surface of the pipe, and the through-hole conductive slip ring is controlled to drive the rotating pipe so that the aluminum film strip is wound on the surface of the pipe, and the surface of the pipe is covered with the aluminum film strip, effectively blocking hydrogen penetration. An efficient pipe aluminum film strip winding and welding process is achieved, solving the problem that the prior art cannot wind and weld the surface material of the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of a usage status is shown in FIG. 1 .

[0024] Figure 2 This is a schematic diagram of the coordination status of the welding mechanism and the rotating mechanism.

[0025] Figure 3 It is a schematic diagram of the rotating mechanism structure.

[0026] Figure 4 It is a schematic diagram of the rotating transmission part of the rotating mechanism.

[0027] Figure 5 It is a schematic diagram of the overall structure of the welding mechanism.

[0028] Figure 6 It is a structural schematic diagram of an ultrasonic butt welding device.

[0029] In the accompanying drawings: 1. rotating mechanism; 11. turntable; 12. bearing bracket; 121. through-hole conductive slip ring; 13. rotating transmission part; 131. rotating transmission motor; 2. welding mechanism; 21. ultrasonic welding part; 22. welding transmission part; 221. welding transmission motor; 222. screw rod; 223. welding transmission base; 2231. guide groove; 23. welding base; 231. guide rail; 24. protective cover; 25. welding head; 3. transmission mechanism; 31. transmission chassis; 311. transmission rail; 32. chassis transmission part; 321. chassis motor; 322. transmission rod; 33. moving frame; 331. transmission groove. DETAILED DESCRIPTION

[0030] The utility model is further described below in conjunction with specific implementation methods. The drawings are only used for exemplary descriptions, and are only schematic diagrams, not actual pictures, and cannot be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0031] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0032] Embodiment 1

[0033] like Figures 1 to 5 The figure shows a first embodiment of an ultrasonic butt welding device of the utility model.

[0034] An ultrasonic butt welding device comprises a rotating mechanism 1 and a welding mechanism 2; the rotating mechanism 1 comprises a turntable 11, a bearing bracket 12 and a rotating transmission part 13; the turntable 11 is coaxially rotatably assembled on one side of the bearing hole of the bearing bracket 12; a matching slip ring sleeve is installed in the bearing hole, and a matching through-hole conductive slip ring 121 is coaxially installed in the slip ring sleeve, which can drive the pipe to rotate; the rotating transmission part 13 drives the turntable 11 to rotate around the central axis of the bearing hole; the welding mechanism 2 comprises an ultrasonic welding part 21, a welding transmission part 22 and a welding base 23, the welding transmission part 22 is assembled on the welding base 23, the welding base 23 is fixed to the end face of the turntable 11 and rotates with the turntable 11; the welding transmission part 22 is connected to the ultrasonic welding part 21 to drive the ultrasonic welding part 21; the pipe passes through the through-hole conductive slip ring 121, and the welding head 25 of the ultrasonic welding part 21 abuts against the surface of the pipe for welding.

[0035] The welding mechanism 2 is assembled on the rotating mechanism 1 and can rotate with the rotating mechanism 1 to achieve 360-degree welding of the aluminum film strip on the surface of the pipe. After the pipe passes through the through-hole conductive slip ring 121 of the rotating mechanism 1, the through-hole conductive slip ring 121 can be controlled to drive the pipe to drive so that the aluminum film strip is wrapped around the surface of the pipe. A traction machine can be added at one end of the pipe to pull the pipe to move horizontally, and the surface of the pipe is covered with the aluminum film strip to effectively block hydrogen penetration. Since the winding of the aluminum film strip under the action of the traction machine will form a spiral aluminum film strip connection line on the surface of the pipe, it is necessary to set an ultrasonic welding device that can rotate 360 ​​degrees around the pipe to weld and dock the aluminum film strip at the connection line, so as to achieve an efficient winding and welding process of the aluminum film strip of the pipe.

[0036] Specifically, the welding transmission part 22 includes a welding transmission motor 221, a screw rod 222 and a welding transmission base 223; the welding transmission base 223 is provided with a nut that matches the screw rod 222 and is assembled on the screw rod 222. The output end of the welding transmission motor 221 is connected to the screw rod 222 to drive the screw rod 222 to rotate and drive the transmission base to move along the screw rod 222.

[0037] The welding transmission part 22 is used to control the size of the contact pressure between the welding head 25 and the surface of the pipe and the position where the welding head 25 contacts the pipe, so as to adapt to the winding and welding work of different types of pipes and improve the adaptability of the equipment. The welding head 25 is assembled on the welding transmission base 223, and a nut matching with the screw rod 222 is fixed at the bottom of the welding transmission base 223 and assembled on the screw rod 222. The screw rod 222 is connected to the output end of the welding transmission motor 221, and the feed amount of the welding joint is realized by controlling the forward and reverse rotation of the welding transmission motor 221; with the cooperation of the welding transmission motor 221, efficient and accurate control can be achieved.

[0038] More specifically, the welding base 23 is provided with a guide rail 231, and the transmission base is provided with a guide groove 2231 matched with the guide rail 231. Providing the guide groove 2231 and the guide rail 231 can reduce the friction between the welding base 23 and the transmission base, making it smoother when moving relative to each other, reducing wear and improving service life.

[0039] Further, the output end of the welding transmission motor 221 is provided with a first pulley, and one end of the screw rod 222 is provided with a second pulley, and the first pulley and the second pulley are connected by a matching belt to realize belt transmission. The welding transmission motor 221 drives the screw rod 222 to rotate through the belt transmission. Since the belt transmission method has a smooth transmission, the softness and elasticity of the belt can effectively reduce the impact and vibration during the transmission process, thereby providing a more stable power output, achieving smooth operation, and making the equipment run more smoothly; since the belt transmission structure is simple, it is relatively convenient in installation and maintenance, which reduces the overall cost of use. In addition, it has the characteristics of easy maintenance. If it is necessary to realize high-precision feeding of the ultrasonic welding head 25, the welding transmission motor 221 and the screw rod 222 can be connected by gear transmission. The screw rod 222 can be accurately advanced and retracted by a certain distance during self-rotation through its own thread, and the gear transmission has the characteristics of high precision, so the feeding accuracy can be further improved when using the gear transmission.

[0040] Specifically, a protective cover 24 for protecting the belt drive is provided at the outer wall of the welding transmission base 223 where the first and second pulleys are assembled. The protective cover 24 is provided with a cavity matching the belt, the first and second pulleys, and can be detachably assembled on the outer wall of the welding transmission base 223. The protective cover 24 can effectively protect the belt drive from unnecessary maintenance caused by dust accumulation in the air.

[0041] Specifically, the welding head 25 is in a truncated cone shape, and the side surface is against the outer surface of the pipe, applying a certain pressure to the aluminum film strip on the surface of the pipe, and achieving butt welding under the action of ultrasonic waves.

[0042] Furthermore, the rotating transmission part 13 includes a rotating transmission motor 131, the output end of the rotating transmission motor 131 is equipped with a third pulley, and one end of the turntable 11 connected to the bearing bracket 12 is fixedly equipped with a fourth pulley. The rotating transmission motor 131 connects the third pulley and the fourth pulley through a belt to drive the turntable 11 to rotate.

[0043] The rotating transmission part 13 is a component that drives the welding structure to rotate. The rotating transmission motor 131 is fixed on the bearing bracket 12. The third pulley is assembled on the output end of the rotating transmission motor 131 as a driving wheel. The fourth pulley is fixed on the end face of the turntable 11 as a driven wheel, so that the turntable 11 rotates with the fourth pulley.

[0044] Embodiment 2

[0045] like Figures 1 to 6 The figure shows a second embodiment of an ultrasonic butt welding device of the present utility model.

[0046] This embodiment is similar to the first embodiment, except that: it also includes a transmission mechanism 3; the transmission mechanism 3 includes a transmission base frame 31, a base frame transmission part 32 and a mobile frame 33, the transmission base frame 31 is rectangular, and the transmission base frame 31 is slidably assembled and connected with the mobile frame 33; the base frame transmission part 32 connects the transmission base frame 31 and the mobile frame 33 to drive the mobile frame 33 to move; the mobile frame 33 is assembled on the top of the transmission base frame 31, and the rotating mechanism 1 is assembled on the top of the mobile frame 33.

[0047] The transmission mechanism 3 serves as the base of the rotating mechanism 1 and the welding mechanism 2, and can adjust the height of the above two mechanisms. Since the aluminum film strip wrapping welding of the pipe is carried out under the action of the traction machine, the welding mechanism 2 is assembled on the top of the transmission chassis 31, and can move in the horizontal direction under the action of the chassis transmission part 32 to perform butt welding on different parts of the pipe, thereby improving the adaptability of the device.

[0048] Furthermore, the chassis transmission part 32 includes a chassis motor 321, a transmission rod 322 and a transmission nut, and the transmission nut is fixed to the mobile frame 33; the transmission rod 322 cooperates with the transmission nut, and the output end of the chassis motor 321 is connected to the transmission rod 322 and drives the transmission rod 322 to rotate around the central axis, driving the mobile frame 33 to move along the transmission rod 322.

[0049] Furthermore, the base motor 321 is fixed on the mobile frame 33, and drives the transmission rod 322 to rotate around the central axis through a pulley drive or a gear drive, thereby driving the mobile frame 33 fixed with a transmission nut on the transmission rod 322 to move along the axis, thereby realizing horizontal movement of the mobile frame 33.

[0050] Embodiment 3

[0051] like Figures 1 to 6 The third embodiment of an ultrasonic butt welding device of the present utility model is shown.

[0052] This embodiment is similar to the first embodiment or the second embodiment, except that: the transmission chassis 31 is provided with a transmission rail 311, and the bottom of the movable frame 33 is provided with a transmission groove 331 matching the transmission rail 311, and the movable frame 33 moves along the transmission rail 311; limit rubber blocks and photoelectric panels are provided at both ends of the transmission rail 311, and the photoelectric panel is connected to the chassis motor 321 through a photoelectric switch signal.

[0053] The matched transmission rail 311 and transmission groove 331 can enable the mobile frame 33 to move smoothly on the transmission base frame 31, thereby reducing the friction between the two components; at the same time, photoelectric panels are arranged at both ends of the transmission rail 311, and the photoelectric panels are connected to the photoelectric switch signal, and the photoelectric switch is electrically connected to the base frame motor 321. When the mobile frame 33 moves to the end of the transmission rail 311, the photoelectric switch controls the base frame motor 321 to stop working, thereby preventing the mobile frame 33 from derailing and falling; in addition, the limiting rubber blocks arranged at both ends of the transmission rail 311 can effectively reduce the collision of the mobile frame 33.

[0054] In the specific contents of the above-mentioned specific implementation methods, the various technical features can be combined in any non-contradictory manner. In order to make the description concise, not all possible combinations of the above-mentioned technical features are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. An ultrasonic butt welding device, characterized in that: It comprises a rotating mechanism (1) and a welding mechanism (2); The rotating mechanism (1) comprises a rotating disk (11), a bearing support (12) and a rotating transmission part (13); the rotating disk (11) is coaxially rotatably mounted on one side of a bearing hole of the bearing support (12); a matching slip ring sleeve is mounted in the bearing hole, and a matching through-hole conductive slip ring (121) is coaxially mounted in the slip ring sleeve, which can drive the pipe to rotate; the rotating transmission part (13) drives the rotating disk (11) to rotate around the central axis of the bearing hole; The welding mechanism (2) comprises an ultrasonic welding part (21), a welding transmission part (22) and a welding base (23); the welding transmission part (22) is assembled on the welding base (23); the welding base (23) is fixed to the end surface of the rotating disk (11) and rotates with the rotating disk (11); the welding transmission part (22) is connected to the ultrasonic welding part (21) to drive the ultrasonic welding part (21); The pipe passes through the through-hole conductive slip ring (121), and the welding head (25) of the ultrasonic welding part (21) abuts against the surface of the pipe for welding.

2. The ultrasonic butt welding device according to claim 1, characterized in that: The welding transmission part (22) comprises a welding transmission motor (221), a screw rod (222) and a welding transmission base (223); the welding transmission base (223) is provided with a nut matching the screw rod (222) and is assembled on the screw rod (222); the output end of the welding transmission motor (221) is connected to the screw rod (222) to drive the screw rod (222) to rotate and drive the transmission base to move along the screw rod (222).

3. The ultrasonic butt welding device according to claim 2, characterized in that: The welding base (23) is provided with a guide rail (231), and the transmission base is provided with a guide groove (2231) matched with the guide rail (231).

4. The ultrasonic butt welding device according to claim 2, characterized in that: The output end of the welding drive motor (221) is provided with a first pulley, and one end of the screw rod (222) is provided with a second pulley, and the first pulley and the second pulley are connected by a matching belt to realize belt transmission.

5. The ultrasonic butt welding device according to claim 4, characterized in that: A protective cover (24) for protecting the belt drive is provided at the location where the first pulley and the second pulley are mounted on the outer wall of the welding transmission base (223); the protective cover (24) is provided with a cavity matching the belt, the first pulley and the second pulley, and can be detachably mounted on the outer wall of the welding transmission base (223).

6. The ultrasonic butt welding device according to claim 1, characterized in that: The welding head (25) is in the shape of a truncated cone, and its side surface abuts against the outer surface of the pipe.

7. The ultrasonic butt welding device according to claim 1, characterized in that: The rotary transmission part (13) comprises a rotary transmission motor (131), the output end of the rotary transmission motor (131) is equipped with a third pulley, one end of the rotary disc (11) connected to the bearing bracket (12) is fixedly equipped with a fourth pulley, and the rotary transmission motor (131) is connected to the third pulley and the fourth pulley via a belt to drive the rotary disc (11) to rotate.

8. The ultrasonic butt welding device according to any one of claims 1 to 7, characterized in that: The machine also comprises a transmission mechanism (3); the transmission mechanism (3) comprises a transmission chassis (31), a chassis transmission part (32) and a movable frame (33); the transmission chassis (31) is rectangular, and the transmission chassis (31) and the movable frame (33) are connected by sliding assembly; the chassis transmission part (32) connects the transmission chassis (31) and the movable frame (33) to drive the movable frame (33) to move; The movable frame (33) is mounted on the top of the transmission base frame (31), and the rotating mechanism (1) is mounted on the top of the movable frame (33).

9. The ultrasonic butt welding device according to claim 8, characterized in that: The chassis transmission part (32) comprises a chassis motor (321), a transmission rod (322) and a transmission nut, wherein the transmission nut is fixed to the mobile frame (33); the transmission rod (322) cooperates with the transmission nut, and the output end of the chassis motor (321) is connected to the transmission rod (322) and drives the transmission rod (322) to rotate around the central axis, thereby driving the mobile frame (33) to move along the transmission rod (322).

10. The ultrasonic butt welding device according to claim 9, characterized in that: The transmission base frame (31) is provided with a transmission rail (311), the bottom of the movable frame (33) is provided with a transmission groove (331) matched with the transmission rail (311), and the movable frame (33) moves along the transmission rail (311); Limiting rubber blocks and photoelectric panels are provided at both ends of the transmission rail (311), and the photoelectric panels are signal-connected to the bottom frame motor (321).

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