Welding device for corrugated pipe production

Abstract

The invention relates to the technical field of corrugated pipe production, and discloses a welding device for corrugated pipe production, which comprises a base, a welding gun, a female end clamping ring and a driving clamping seat are arranged on the base, a forward limiting clamping seat is further arranged on the base, a driving clamping ring is rotatably mounted on the driving clamping seat, a connecting plate is arranged at the side part of the driving clamping ring, and the connecting plate is connected with the female end clamping ring and the driving clamping seat. An air cylinder and a piston barrel are installed between the connecting plate and the base, the air cylinder is in transmission connection with a driving clamping ring, when the air cylinder stretches out, the driving clamping ring and a driving clamping seat are closed, and the piston barrel is extruded to exhaust air. A limiting ring is slidably installed on the forward limiting clamping seat, and an arc-shaped cavity is formed in the forward limiting clamping seat. The limiting ring is in sliding connection with the forward limiting clamping base, and the piston cylinder communicates with the arc-shaped cavity. According to the scheme, the cantilever effect of the corrugated pipe is reduced, the corrugated pipe welding stability is improved, the welding seam size is reduced, and the corrugated pipe welding efficiency and quality are improved.

Description

Technical Field

[0001] The invention relates to the technical field of corrugated pipe production, in particular to a welding device for producing corrugated pipes. Background Art

[0002] The welding device for bellows production is a device specially used for manufacturing bellows. It is mainly used to weld the joints or pipe bodies of bellows to ensure their sealing, strength and consistency. Bellows are widely used in industrial pipelines, automobile exhaust systems, air conditioning pipelines and other fields. The performance of the welding device directly affects the quality and production efficiency of the product. The device usually adopts advanced welding technology, such as laser welding, argon arc welding or plasma welding, to meet the requirements of different materials and processes. Laser welding technology is known for its high precision, high speed and small heat-affected zone, and is suitable for the production of high-quality bellows; argon arc welding is suitable for welding materials such as stainless steel and copper, and has the characteristics of stable welding quality and flexible operation. The core functions of the welding device include: precise control of welding parameters to ensure uniform and defect-free welds; automated operation to improve production efficiency; versatility, able to adapt to bellows of different specifications and materials. In addition, the device is also equipped with a safety protection system and a quality inspection module to ensure the reliability of the production process and product quality.

[0003] At present, when performing circumferential welding on longer metal soft bellows, due to its "soft and long characteristics", the traditional welding method of clamping the ends and rotating the bellows is prone to large shaking of the other end, which will cause the weld to be unstable and affect the welding quality; therefore, it does not meet the existing needs. We have proposed a welding device for bellows production. Summary of the invention

[0004] The present invention provides a welding device for producing corrugated pipes, which has the beneficial effects of reducing the cantilever effect of the corrugated pipes, improving the welding stability of the corrugated pipes, reducing the size of the weld, and improving the welding efficiency and quality of the corrugated pipes. It solves the problem mentioned in the above background technology that the traditional welding method of clamping the end and rotating the corrugated pipe is indeed prone to large-scale shaking of the other end, which will cause the weld to be unstable and affect the welding quality.

[0005] The present invention provides the following technical solution: a welding device for corrugated pipe production, comprising a base, on which a welding gun, a female end clamping ring and a driving clamping seat are arranged, and a positive limit clamping seat is also arranged on the base, and a driving clamping ring is rotatably installed on the driving clamping seat, a connecting plate is arranged on the side of the driving clamping ring, a cylinder and a piston cylinder are installed between the connecting plate and the base, the cylinder is transmission-connected with the driving clamping ring, when the cylinder is extended, the driving clamping ring and the driving clamping seat are closed, and the piston cylinder is squeezed to exhaust, a limiting ring is slidably installed on the positive limit clamping seat, an arc-shaped cavity is arranged inside the positive limit clamping seat, the limiting ring is slidably connected with the positive limit clamping seat, and the piston cylinder is communicated with the arc-shaped cavity.

[0006] As an optional scheme of a welding device for corrugated pipe production described in the present invention, wherein: a reverse limit clamping seat is also arranged on the base, the reverse limit clamping seat and the forward limit clamping seat are symmetrically arranged in structure, and the reverse limit clamping seat and the forward limit clamping seat are coaxially arranged with the driving clamping seat, and a first air pipe is connected to the side of the piston cylinder, the first air pipe is connected to the side of the forward limit clamping seat, the side of the first air pipe is connected to a second air pipe, and the other end of the second air pipe is connected to the arc cavity of the reverse limit clamping seat.

[0007] As an optional solution of a welding device for producing corrugated pipes described in the present invention, one end of the limiting ring adjacent to the arc-shaped cavity is connected to an arc-shaped rod, and the other end of the arc-shaped rod is connected to a piston block, and the piston block is slidably fitted with the arc-shaped cavity.

[0008] As an optional solution for a welding device for producing corrugated pipes described in the present invention, a piston disk is slidably connected inside the piston cylinder, a fixing rod is connected to the top of the piston disk, a rotating shaft is rotatably installed inside the articulated frame, driving rings are fixedly connected at both ends of the rotating shaft, the driving ring is integrally connected to the driving clamping ring, the driving ring is connected to the connecting plate, and the fixing rod and the cylinder output end are both connected to the bottom of the connecting plate.

[0009] As an optional solution of a welding device for producing corrugated pipes described in the present invention, a fixing block is installed on the same side of the positive limit clamping seat and the reverse limit clamping seat, a through hole is opened inside the fixing block, a threaded rod is coaxially connected to the end of the rotating shaft, two threaded rings are threadedly installed on the threaded rod, both of the threaded rings are slidably engaged with the base, and the two threaded rings are slidably plugged with the adjacent through holes respectively;

[0010] The two threaded rings are both configured as tapered rings with internal threads.

[0011] As an optional solution for a welding device for corrugated pipe production described in the present invention, a slide groove is provided on the surface of the base, a limit groove is provided inside the slide groove, sliders are installed at the bottom of the positive limit clamping seat and the reverse limit clamping seat, and a limit block is installed on the side of the slider, and the slider and the limit block are slidably engaged with the slide groove and the limit groove respectively.

[0012] As an optional solution for a welding device for corrugated pipe production described in the present invention, a positioning pin hole is provided on the slider, a plurality of equidistant pin holes are provided on the surface of the base, a positioning pin is movably inserted inside the positioning pin hole, and when the positioning pin hole overlaps with the equidistant pin hole, the positioning pin passes through the positioning pin hole and extends into the equidistant pin hole below.

[0013] As an optional solution of a welding device for corrugated pipe production described in the present invention, a first inner ring and a second inner ring are installed inside the driving clamping ring, the first inner ring is slidably installed on the inner ring of the driving clamping ring, and the second inner ring is slidably installed on the inner ring of the driving clamping seat.

[0014] As an optional solution for a welding device for producing corrugated pipes described in the present invention, electromagnetic suction cups are installed on the sides of the first inner ring and the drive clamping ring, first tooth segments are arranged on the outer sides of the first inner ring and the second inner ring, an installation cavity is opened inside the drive clamping seat, two gears are rotatably installed inside the installation cavity, a toothed transmission belt is also sleeved on the outer sides of the two gears, a second tooth segment is arranged on the outer side of the transmission belt, and the first tooth segment is meshed with the second tooth segment.

[0015] As an optional solution for a welding device for corrugated pipe production described in the present invention, the sides of the positive limit clamping seat and the reverse limit clamping seat are both provided with a first rotating pipe groove and a plurality of second rotating pipe grooves, the side of the limit ring is rotatably mounted with a plurality of first pulleys, the first pulley is slidably engaged with the first rotating pipe groove and has a clearance fit, and the inside of the second rotating pipe groove is rotatably mounted with a plurality of second pulleys.

[0016] The present invention has the following beneficial effects:

[0017] 1. The bellows production welding device cooperates with the cylinder, piston barrel and connecting plate. After the bellows is placed on the driving clamping seat, the cylinder is started, and the cylinder pushes the connecting plate upward, thereby driving the driving clamping ring to rotate and the driving clamping seat to close, so as to realize automatic clamping of the end of the bellows. At the same time, the limit ring is pneumatically extended from the positive limit clamping seat. After the limit ring is extended, it is semi-wrapped around the bellows to clamp the middle of the bellows, so that before welding, the end of the bellows and other positions are clamped automatically, so that during welding, even if the bellows rotates, there will be no large shaking, which reduces the cantilever effect of the bellows, improves the welding stability of the bellows, reduces the size of the weld, and improves the welding efficiency and quality of the bellows.

[0018] 2. The welding device for the production of bellows has a reverse limit clamping seat symmetrical to the forward limit clamping seat on the base, so as to realize multi-point clamping of the bellows. The symmetrical setting helps to balance the force, reduce the axis deviation caused by the eccentric load, suppress the cantilever effect when the long bellows rotates, and further reduce the shaking of the bellows.

[0019] Moreover, by coaxially installing a threaded rod at the end of the rotating shaft, when the cylinder is running, the threaded ring is translated and set to a conical ring. Therefore, before each welding, the threaded ring is plugged into the through hole once, and the shape of the threaded ring is used to guide it to automatically align when it contacts the through hole, thereby achieving fine-tuning of the position of the positive limit clamping seat and the reverse limit clamping seat, thereby calibrating the axis. Even if the two sliders have just been moved, the axis can be automatically adjusted to compensate for the axis deviation after the movement of the slider, further reducing the cantilever effect during the rotation of the long bellows, and greatly improving the welding quality of the bellows. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure during processing of the present invention.

[0021] Figure 2 It is a schematic diagram of the overall three-dimensional structure of the present invention.

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure of the driving clamping seat of the present invention.

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the positive limit clamping seat of the present invention.

[0024] Figure 5 It is a partial structural schematic diagram of the positive limit clamping seat of the present invention.

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the connecting plate of the present invention.

[0026] Figure 7It is a schematic diagram of the cross-sectional structure of the positive limit clamping seat of the present invention.

[0027] Figure 8 It is a schematic diagram of the cross-sectional structure of the slider and the limit block of the present invention.

[0028] Fig. 9 It is a schematic diagram of the installation cavity structure of the present invention.

[0029] Fig.10 For the present invention Figure 2 A is an enlarged structural diagram of FIG.

[0030] Fig.11 For the present invention Fig. 9 Schematic diagram of the enlarged structure at B.

[0031] In the figure: 110, base; 111, cylinder; 112, piston cylinder; 113, first air pipe; 114, second air pipe; 115, piston block; 120, first rotating pipe groove; 121, first pulley; 122, piston plate; 123, fixing rod; 124, hinge frame; 125, rotating shaft; 126, driving ring; 127, connecting plate; 128, threaded rod; 130, female end clamping ring; 131, sliding groove; 132, limiting groove; 133, sliding block; 134, limiting block; 135, positioning pin hole; 136, equidistant pin hole; 140, positioning pin; 150, driving clamping seat ;151, drive clamping ring;152, first inner ring;153, second inner ring;154, electromagnetic suction cup;155, first tooth segment;161, mounting cavity;162, gear;165, second tooth segment;170, positive limit clamping seat;171, through groove;172, arc cavity;173, limit ring;174, corrugated groove;180, reverse limit clamping seat;182, fixing block;183, through hole;184, threaded ring;210, welding gun;211, welding disk;500, transmission belt;501, arc rod;502, second rotating tube groove;503, second pulley. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Embodiment 1: This embodiment is intended to solve the problem that the traditional welding method of clamping the end and rotating the bellows is indeed prone to the phenomenon that the other end shakes greatly, which will cause the weld to be unstable and affect the welding quality. Please refer to Figure 1-11A welding device for producing corrugated pipes includes a base 110, on which a welding gun 210, a female end clamping ring 130 and a driving clamping seat 150 are arranged. A welding disk 211 is arranged on the female end clamping ring 130. In this embodiment, the welding disk 211 is set as an electric push rod rotating disk used to clamp and push out the corrugated pipe joint in the prior art. Before welding, the welding disk 211 pushes out the joint on it. During welding, the welding disk 211 drives the joint and the corrugated pipe to rotate synchronously, and the welding gun 210 is attached to the welding disk 211 during welding, thereby improving the stability of the welding gun 210. The welding gun 210 is set as a welding gun installed on a moving slide.

[0034] For specific settings, see Figure 1 and Figure 2 The base 110 is also provided with a positive limit clamping seat 170, and a driving clamping ring 151 is rotatably mounted on the driving clamping seat 150. A connecting plate 127 is provided on the side of the driving clamping ring 151. A cylinder 111 and a piston cylinder 112 are installed between the connecting plate 127 and the base 110. The cylinder 111 is connected to the driving clamping ring 151 in a transmission manner. When the cylinder 111 is extended, the driving clamping ring 151 and the driving clamping seat 150 are closed, and the piston cylinder 112 is squeezed to exhaust air. Figure 7 A limiting ring 173 is slidably installed on the positive limiting clamping seat 170 , an arc-shaped cavity 172 is provided inside the positive limiting clamping seat 170 , the limiting ring 173 is slidably connected to the positive limiting clamping seat 170 , and the piston cylinder 112 is connected to the arc-shaped cavity 172 .

[0035] The side of the piston cylinder 112 is connected with a first air pipe 113, which is connected to the side of the positive limit clamping seat 170 and communicates with the arc cavity 172. The end of the limit ring 173 adjacent to the arc cavity 172 is connected with an arc rod 501, and the other end of the arc rod 501 is connected with a piston block 115, and the piston block 115 is slidably fitted with the arc cavity 172.

[0036] See Figure 3 , Figure 4 and Figure 6 A piston disc 122 is slidably connected inside the piston cylinder 112, a fixed rod 123 is connected to the top of the piston disc 122, a rotating shaft 125 is rotatably installed inside the articulated frame 124, a driving ring 126 is fixedly connected at both ends of the rotating shaft 125, the driving ring 126 is integrally connected to the driving clamping ring 151, the driving ring 126 is connected to the connecting plate 127, and the fixed rod 123 and the output end of the cylinder 111 are both connected to the bottom of the connecting plate 127.

[0037] When the piston cylinder 112 is squeezed, the internal gas enters the arc cavity 172 through the first air pipe 113. By sliding the limit ring 173 in the through groove 171 and arranging the arc rod 501 and the piston block 115, the gas in the arc cavity 172 pushes the piston block 115, so that the arc rod 501 drives the limit ring 173 to move. Since the limit ring 173, the arc cavity 172 and the arc rod 501 are concentric and coaxial, the limit ring 173 can be pushed out smoothly and the bellows can be semi-wrapped and clamped.

[0038] In order to realize the rotation of the bellows during welding, the first inner ring 152 and the second inner ring 153 are installed inside the driving clamping ring 151. The first inner ring 152 is slidably installed on the inner ring of the driving clamping ring 151, and the second inner ring 153 is slidably installed on the inner ring of the driving clamping seat 150. Electromagnetic suction cups 154 are installed on the sides of the first inner ring 152 and the driving clamping ring 151. The electromagnetic suction cup 154 ​​is set as an electromagnet combination. When powered on, the electromagnet located on the side of the driving clamping ring 151 generates magnetic force, which can absorb the iron block located on the first inner ring 152, so that the first inner ring 152 and the second inner ring 153 can be automatically positioned and reset.

[0039] The first inner ring 152 and the second inner ring 153 are provided with a first tooth segment 155 on the outside, and the driving clamping seat 150 is provided with an installation cavity 161 inside. Two gears 162 are rotatably installed inside the installation cavity 161. A tooth transmission belt 500 is also sleeved on the outside of the two gears 162. A second tooth segment 165 is provided on the outside of the transmission belt 500. The first tooth segment 155 meshes with the second tooth segment 165. A motor is installed in the installation cavity 161, and the gear 162 is connected to the motor. The operation of the motor realizes the rotation of the first inner ring 152 and the second inner ring 153 through meshing transmission, thereby realizing the rotation of the bellows during welding. This part is a conventional technical means in this field and will not be repeated here.

[0040] Start the cylinder 111, the output shaft of the cylinder 111 retracts to drive the connecting plate 127 to rotate, and the other end of the connecting plate 127 drives the driving ring 126 to rotate, and at the same time, the driving clamping ring 151 on the side of the driving ring 126 rotates and separates from the driving clamping seat 150, and the main body of the bellows to be welded is placed on the driving clamping seat 150 and the positive limit clamping seat 170, and the cylinder 111 is started again, and the output shaft of the cylinder 111 drives the connecting plate 127 to move up, and the other end of the connecting plate 127 drives the driving ring 126 to rotate. The movable ring 126 rotates, driving the clamping ring 151 to rotate and drive the clamping seat 150 to close, clamping the end and middle part to be welded of the bellows. While the output end of the cylinder 111 moves, the connecting plate 127 drives the fixed rod 123 to move upward, pressing the gas inside the piston cylinder 112 toward the first air pipe 113 and flowing into the arc cavity 172. The gas can push the piston block 115 to slide, and the limiting ring 173 on the other side of the arc rod 501 extends to limit the bellows.

[0041] In this embodiment, through the cooperation of the cylinder 111, the piston cylinder 112 and the connecting plate 127, after the bellows is placed on the driving clamping seat 150, the cylinder 111 is started, and the cylinder 111 pushes the connecting plate 127 upward, thereby driving the driving clamping ring 151 to rotate and close the driving clamping seat 150, so as to realize automatic clamping of the end of the bellows. At the same time, since the piston cylinder 112 is installed on the side of the connecting plate 127, the piston cylinder 112 is also squeezed when the connecting plate 127 moves, so that the piston cylinder 112 The gas inside is squeezed out, and the limit ring 173 is pneumatically extended from the positive limit clamping seat 170. After the limit ring 173 is extended, it semi-wraps and clamps the bellows to achieve positioning of the middle of the bellows. Before welding, the end of the bellows and other positions are clamped automatically, so that during welding, even if the bellows rotates, there will be no large shaking, which reduces the cantilever effect of the bellows, improves the welding stability of the bellows, reduces the size of the weld, and improves the welding efficiency and quality of the bellows.

[0042] Embodiment 2: This embodiment is intended to facilitate solving the problem that when processing corrugated pipes of different lengths, the clamping position needs to be changed, and further calibration is required after the position is adjusted. This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1-11 A reverse limit clamping seat 180 is also provided on the base 110. The reverse limit clamping seat 180 and the forward limit clamping seat 170 are symmetrically arranged in structure, and the reverse limit clamping seat 180 and the forward limit clamping seat 170 are coaxially arranged with the driving clamping seat 150. The side of the first air pipe 113 is connected to the second air pipe 114, and the other end of the second air pipe 114 is connected to the arc cavity 172 of the reverse limit clamping seat 180.

[0043] A fixing block 182 is installed on the same side of the positive limit clamping seat 170 and the reverse limit clamping seat 180, and a through hole 183 is opened inside the fixing block 182. A threaded rod 128 is coaxially connected to the end of the rotating shaft 125, and two threaded rings 184 are threadedly installed on the threaded rod 128. The two threaded rings 184 are both slidably engaged with the base 110, and the two threaded rings 184 are respectively slidably plugged with the adjacent through holes 183; see Fig.10 The two threaded rings 184 are both configured as tapered rings with internal threads. A limiting slider is connected to the bottom side of the threaded ring 184, and a groove matching the limiting slider is provided on the base 110, and the limiting slider is slidably engaged with the base 110.

[0044] A slide groove 131 is provided on the surface of the base 110, and a limit groove 132 is provided inside the slide groove 131. A slider 133 is installed at the bottom of the positive limit clamping seat 170 and the reverse limit clamping seat 180, and a limit block 134 is installed on the side of the slider 133. The slider 133 is configured as a T-shaped block, and the limit block 134 is located on both sides of the bottom end of the slider 133. The slider 133 and the limit block 134 are slidably engaged with the slide groove 131 and the limit groove 132 respectively.

[0045] See Figure 8 The slider 133 is provided with a positioning pin hole 135, and the surface of the base 110 is provided with a plurality of equidistant pin holes 136. A positioning pin 140 is movably inserted in the positioning pin hole 135. When the positioning pin hole 135 overlaps with the equidistant pin hole 136, the positioning pin 140 passes through the positioning pin hole 135 and extends into the equidistant pin hole 136 below. When facing the bellows body of different lengths, the distance between the positive limit clamping seat 170 and the reverse limit clamping seat 180 can be adjusted to ensure stability during the welding process as much as possible, and the positive limit clamping seat 170 and the reverse limit clamping seat 180 can be manually moved and fixed with the positioning pin 140.

[0046] See Figure 5 The first rotating tube groove 120 and a plurality of second rotating tube grooves 502 are both provided on the side of the positive limit clamping seat 170 and the reverse limit clamping seat 180, and a plurality of first pulleys 121 are rotatably installed on the side of the limit ring 173. The first pulleys 121 are slidably engaged with the first rotating tube groove 120 and have clearance fit, and a plurality of second pulleys 503 are rotatably installed inside the second rotating tube groove 502. When the positive limit clamping seat 170 and the reverse limit clamping seat 180 clamp the corrugated tube, the first pulleys 121 and the second pulleys 503 are in contact with the tube wall, so that the corrugated tube rotates smoothly during welding.

[0047] In this embodiment: a reverse limit clamping seat 180 symmetrical to the forward limit clamping seat 170 is provided on the base 110 to achieve multi-point clamping of the bellows, and the symmetrical arrangement helps to balance the force, reduce the axis deviation caused by the eccentric load, suppress the cantilever effect when the long bellows rotates, and further reduce the shaking of the bellows;

[0048] Moreover, by coaxially installing the threaded rod 128 at the end of the rotating shaft 125, when the cylinder 111 is running, the rotating shaft 125 is rotated by rotating the connecting plate 127, thereby causing the threaded rod 128 to rotate. By the threaded connection between the threaded rod 128 and the threaded ring 184 and the sliding limit between the threaded ring 184 and the base 110, when the threaded rod 128 rotates, the threaded ring 184 is translated. The threaded ring 184 is set as a conical ring. Therefore, before each welding, the threaded ring 184 is plugged into the through hole 183 once. The shape of the threaded ring 184 is used to guide the automatic centering when it contacts the through hole 183, thereby achieving fine-tuning of the position of the positive limit clamping seat 170 and the reverse limit clamping seat 180, thereby calibrating the axis. Even if the two sliders 133 have just been moved, the axis can be automatically adjusted to compensate for the axis deviation after the slider 133 moves, further reducing the cantilever effect during the rotation of the long bellows, and greatly improving the welding quality of the bellows.

[0049] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0050] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A welding device for producing a corrugated pipe, comprising a base (110), on which a welding gun (210), a female end clamping ring (130) and a drive clamping seat (150) are arranged, characterized in that: The base (110) is also provided with a positive limit clamping seat (170), a driving clamping ring (151) is rotatably mounted on the driving clamping seat (150), a connecting plate (127) is provided on the side of the driving clamping ring (151), a cylinder (111) and a piston cylinder (112) are installed between the connecting plate (127) and the base (110), the cylinder (111) is drivingly connected to the driving clamping ring (151), and the cylinder (111) is connected to the driving clamping ring (151). 1) When extending, the driving clamping ring (151) and the driving clamping seat (150) are closed, and the piston cylinder (112) squeezes out the air, and a limiting ring (173) is slidably installed on the positive limit clamping seat (170), an arc-shaped cavity (172) is arranged inside the positive limit clamping seat (170), the limiting ring (173) is slidably connected to the positive limit clamping seat (170), and the piston cylinder (112) is connected to the arc-shaped cavity (172).

2. A welding device for producing corrugated pipes according to claim 1, characterized in that: A reverse limit clamping seat (180) is also provided on the base (110), and the reverse limit clamping seat (180) and the forward limit clamping seat (170) are symmetrically arranged in structure, and the reverse limit clamping seat (180) and the forward limit clamping seat (170) are both arranged coaxially with the driving clamping seat (150), and a first air pipe (113) is arranged on the side of the piston cylinder (112), and the first air pipe (113) is connected to the side of the forward limit clamping seat (170), and a second air pipe (114) is connected to the side of the first air pipe (113), and the other end of the second air pipe (114) is connected to the arc-shaped cavity (172) of the reverse limit clamping seat (180).

3. A welding device for producing corrugated pipes according to claim 2, characterized in that: One end of the limiting ring (173) adjacent to the arc-shaped cavity (172) is connected to an arc-shaped rod (501), and the other end of the arc-shaped rod (501) is connected to a piston block (115), and the piston block (115) is slidably fitted with the arc-shaped cavity (172).

4. A welding device for producing corrugated pipes according to claim 1, characterized in that: A piston disc (122) is slidably connected inside the piston cylinder (112), a fixing rod (123) is connected to the top of the piston disc (122), a rotating shaft (125) is rotatably installed inside the hinge frame (124), a driving ring (126) is fixedly connected to both ends of the rotating shaft (125), the driving ring (126) is integrally connected to the driving clamping ring (151), the driving ring (126) is connected to the connecting plate (127), and the fixing rod (123) and the output end of the cylinder (111) are both connected to the bottom of the connecting plate (127).

5. A welding device for producing corrugated pipes according to claim 4, characterized in that: A fixing block (182) is installed on the same side of the positive limit clamping seat (170) and the reverse limit clamping seat (180), a through hole (183) is opened inside the fixing block (182), a threaded rod (128) is coaxially connected to the end of the rotating shaft (125), two threaded rings (184) are threadedly installed on the threaded rod (128), the two threaded rings (184) are both slidably engaged with the base (110), and the two threaded rings (184) are respectively slidably plugged with adjacent through holes (183); The two threaded rings (184) are both configured as tapered rings with internal threads.

6. A welding device for producing corrugated pipes according to claim 2, characterized in that: A slide groove (131) is provided on the surface of the base (110), a limit groove (132) is provided inside the slide groove (131), a slider (133) is installed at the bottom of the positive limit clamping seat (170) and the reverse limit clamping seat (180), a limit block (134) is installed on the side of the slider (133), and the slider (133) and the limit block (134) are slidably engaged with the slide groove (131) and the limit groove (132) respectively.

7. A welding device for producing corrugated pipes according to claim 6, characterized in that: The slider (133) is provided with a positioning pin hole (135), and the surface of the base (110) is provided with a plurality of equidistant pin holes (136). A positioning pin (140) is movably inserted into the positioning pin hole (135). When the positioning pin hole (135) overlaps with the equidistant pin hole (136), the positioning pin (140) passes through the positioning pin hole (135) and extends into the equidistant pin hole (136) below.

8. A welding device for producing corrugated pipes according to claim 1, characterized in that: A first inner ring (152) and a second inner ring (153) are installed inside the driving clamping ring (151). The first inner ring (152) is slidably installed on the inner ring of the driving clamping ring (151), and the second inner ring (153) is slidably installed on the inner ring of the driving clamping seat (150).

9. A welding device for producing corrugated pipes according to claim 8, characterized in that: Electromagnetic suction cups (154) are installed on the sides of the first inner ring (152) and the driving clamping ring (151); first tooth segments (155) are arranged on the outer sides of the first inner ring (152) and the second inner ring (153); a mounting cavity (161) is provided inside the driving clamping seat (150); two gears (162) are rotatably installed inside the mounting cavity (161); a tooth transmission belt (500) is also sleeved on the outer sides of the two gears (162); a second tooth segment (165) is arranged on the outer side of the transmission belt (500); and the first tooth segment (155) is meshed with the second tooth segment (165).

10. A welding device for producing corrugated pipes according to claim 2, characterized in that: The sides of the positive limit clamping seat (170) and the reverse limit clamping seat (180) are both provided with a first rotating tube groove (120) and a plurality of second rotating tube grooves (502); a plurality of first pulleys (121) are rotatably mounted on the side of the limit ring (173); the first pulleys (121) are slidably engaged with the first rotating tube groove (120) and are clearance-matched; and a plurality of second pulleys (503) are rotatably mounted inside the second rotating tube groove (502).

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