A welding device for producing double-wall corrugated pipes

Abstract

The present invention relates to the technical field of bellows welding, and discloses a welding device for producing double-wall bellows, comprising a supporting mechanism, wherein the supporting mechanism comprises a first fixing frame, the outer wall of the first fixing frame is provided with a first through hole, the inner wall of the first fixing frame is provided with a welding mechanism, the outer wall of the first fixing frame is fixedly connected with the first supporting frame, when welding the bellows, the outer walls on both sides of the bellows are clamped by the clamping mechanism, and the welding mechanism slides around the inner wall of the first fixing frame, so that the area of ​​the outer wall of the bellows that needs to be welded can be welded, and the bottom of the bellows can be welded by sliding the first sliding block, so that after the welding operation on one side of the bellows is completed, it is unnecessary to take out the half-welded bellows and turn it over and fix it, thereby increasing the welding efficiency of the bellows.

Description

Technical Field

[0001] The invention relates to the technical field of bellows welding, in particular to a welding device for producing double-walled bellows. Background Art

[0002] High-density polyethylene double-wall corrugated pipe is a new type of pipe with an annular outer wall and a smooth inner wall. It was first successfully developed in Germany in the early 1980s. After more than ten years of development and improvement, it has developed from a single variety to a complete product series. It is very mature in production technology and application technology. Due to its excellent performance and relatively economical cost, it has been greatly promoted and applied in developed countries such as Europe and the United States. In my country, the promotion and application of HDPE double-wall corrugated pipe is in an upward trend, and all technical indicators have reached the use standards.

[0003] Patent application with application number CN202321727159.4 discloses a bellows outer diameter welding fixture, including a base, a motor 1 is fixedly installed on the front side of the base, a threaded rod 1 is fixedly installed on the output shaft of the motor 1, a slide rail is fixedly installed on the inner side of the base, a front cover is fixedly installed on the front side of the base, and a slider is slidably installed on the slide rail.

[0004] To sum up, when the device is performing welding operations on the bellows, when the bellows is placed on the fixture for welding operations, the bottom plate will block the bottom of the bellows, making it inconvenient to weld the side of the bellows close to the bottom plate. Therefore, after completing the welding operation on one side, the half-welded bellows needs to be taken out, turned over and fixed, which will reduce the welding efficiency of the bellows.

[0005] To this end, we proposed a welding device for producing double-wall corrugated pipes. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a welding device for producing double-wall corrugated pipes to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solutions: A welding device for producing double-wall corrugated pipes, comprising a supporting mechanism, the supporting mechanism comprising a first fixing frame, the outer wall of the first fixing frame is provided with a first through hole, the inner wall of the first fixing frame is provided with a welding mechanism, the outer wall of the first fixing frame is fixedly connected to the first supporting frame, the outer wall of the first supporting frame on one side away from the first fixing frame is fixedly connected to a connecting shaft, and the end of the connecting shaft away from the first supporting frame is fixedly connected to a second supporting frame, and further comprising:

[0008] The clamping mechanism includes a second sliding block slidably connected to the connecting shaft, the outer wall of the second sliding block on a side close to the first motor is fixedly connected to the first arc rod, the inner wall of the first arc rod is provided with a second through hole, the outer wall of the second sliding block on a side away from the first arc rod is fixedly connected to the third hydraulic rod, the output end of the third hydraulic rod is provided with an auxiliary component, the outer wall of one end of the second sliding block close to the third hydraulic rod is fixedly connected to the third fixing frame, and the end of the third fixing frame away from the second sliding block is fixedly connected to the third hydraulic rod.

[0009] According to the above technical solution, the auxiliary component includes a sliding frame, the inner wall of the sliding frame is fixedly connected to the third hydraulic rod, a first force plate is arranged on the top of the sliding frame, a fixed shaft is fixedly connected to the outer wall of the first force plate on the side close to the sliding frame, a third through hole is opened on the inner wall of the first force plate, the fixed shaft passes through the sliding frame and is fixedly connected to a connecting block, a spring is fixedly connected to the top of the connecting block, and one end of the spring away from the connecting block is fixedly connected to the sliding frame, and the number of the fixed shafts is two, and the two fixed shafts are symmetrically arranged with the central axis of the connecting block as the center.

[0010] According to the above technical solution, the inner wall of the sliding frame is rotatably connected to the second arc rod through a rotating shaft, the end of the second arc rod away from the sliding frame is rotatably connected to the second force plate through a rotating shaft, the inner wall of the second arc rod is rotatably connected to the rotating rod through a rotating shaft, the end of the rotating rod away from the second arc rod is rotatably connected to the connecting block, the outer wall of the second force plate is slidably connected to the third through hole, the number of the second arc rods is two, and the two second arc rods are symmetrically arranged with the central axis of the first force plate as the center.

[0011] According to the above technical solution, the welding mechanism includes a first sliding block, the outer wall of the first sliding block is slidably connected to the first fixed frame, the outer wall of the first sliding block is fixedly connected to the second motor, the output end of the second motor is fixedly connected to the driving wheel, the outer surface of the driving wheel is rollingly connected to the inner wall of the first fixed frame, the number of the second motors is four, and the four second motors are symmetrically arranged with the central axis of the first sliding block as the center.

[0012] According to the above technical solution, the outer wall of the first sliding block is fixedly connected to the second fixing frame, the inner wall of the second fixing frame is fixedly connected to the second hydraulic rod, the output end of the second hydraulic rod is fixedly connected to the electric welding device, the inner wall of the second fixing frame is fixedly connected to the third connecting frame, and the second hydraulic rod pushes the electric welding device to perform welding operations on corrugated pipes of different diameters.

[0013] According to the above technical solution, one end of the third connecting frame away from the second fixed frame is fixedly connected to the second hydraulic rod, and the outer wall of the third connecting frame is rotatably connected to a cleaning plate through a rotating shaft. There are two cleaning plates, and the two cleaning plates are symmetrically arranged around the central axis of the second fixed frame. The cleaning plates clean the welding residues remaining on the inner wall of the first fixed frame.

[0014] According to the above technical solution, the inner wall of the first support frame is fixedly connected to the first hydraulic rod, the output end of the first hydraulic rod is fixedly connected to the first connecting frame, the inner wall of the first connecting frame is rotatably connected to the auxiliary roller via a rotating shaft, and the number of the first support frames is two, and the two first support frames are symmetrically arranged with the central axis of the first fixed frame as the center.

[0015] According to the above technical solution, the bottom outer wall of the first fixing frame is fixedly connected to the second connecting frame, the outer wall of the second connecting frame on one side close to the first fixing frame is fixedly connected to the first motor, the output end of the first motor passes through the second connecting frame and is fixedly connected to a fixing rod, and the end of the fixing rod close to the second connecting frame is rotatably connected to a roller via a rotating shaft, the outer surface of the roller is rollingly connected to the second through hole, the number of the rollers is two, and the two rollers are symmetrically arranged around the central axis of the fixing rod.

[0016] Compared with the prior art, the present invention provides a welding device for producing double-wall corrugated pipes, which has the following beneficial effects:

[0017] 1. The present invention provides a welding device for producing double-wall corrugated pipes. When welding the corrugated pipes, the outer walls of both sides of the corrugated pipes are clamped by a clamping mechanism, and the welding mechanism slides around the inner wall of the first fixing frame, so that the area of ​​the outer wall of the corrugated pipe that needs to be welded can be welded. By sliding the first sliding block, the bottom of the corrugated pipe can be welded, so that after the welding operation on one side of the corrugated pipe is completed, it is unnecessary to take out the half-welded corrugated pipe, turn it over and fix it, thereby increasing the welding efficiency of the corrugated pipe.

[0018] 2. The present invention sets a welding mechanism. When the driving wheel rolls against the inner wall of the first fixed frame through the second motor, the first sliding block slides against the inner wall of the first fixed frame. The distance between the electric welding device and the corrugated pipe is controlled by the second hydraulic rod, so that corrugated pipes of different diameters can be welded. The first sliding block makes a circular motion around the corrugated pipe, thereby increasing the efficiency of welding the outer wall of the corrugated pipe.

[0019] 3. The present invention provides a clamping mechanism. When the bellows is placed on the top of the first force-bearing plate, the first force-bearing plate is squeezed, so that the second arc rods on both sides are pulled by the rotating rod at the bottom of the first force-bearing plate, so that the outer wall of the bellows is clamped and fixed by the second force-bearing plate at the top of the second arc rod, thereby facilitating the stability of the bellows during welding operations.

[0020] 4. The present invention sets a fixing rod and a first arc rod. When the corrugated tube is fixed in the clamping mechanism, the first motor rotates the fixing rod, and the roller slides on the inner wall of the first arc rod, so that the clamping devices on both sides of the first fixing frame can be close to a certain distance, thereby shortening the distance between the two sections of the corrugated tube, thereby reducing the width of the weld as much as possible, which is beneficial to the yield rate after welding is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall front structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the overall front cross-sectional structure of the present invention;

[0023] Figure 3 For the present invention Figure 2 A is a schematic diagram of the enlarged structure of the middle part;

[0024] Figure 4 It is a schematic diagram of the supporting mechanism structure of the present invention;

[0025] Figure 5 It is a schematic diagram of the welding mechanism structure of the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of the clamping mechanism of the present invention;

[0027] Figure 7 It is a schematic diagram of the structure of the second sliding block and the first arc-shaped rod of the present invention;

[0028] Figure 8 It is a schematic diagram of the auxiliary component structure of the present invention.

[0029] In the figure: 1. Support mechanism; 101. First fixed frame; 102. First through hole; 103. First support frame; 104. Connecting shaft; 105. Second support frame; 106. First hydraulic rod; 107. First connecting frame; 108. Auxiliary roller; 109. Second connecting frame; 110. First motor; 111. Fixed rod; 112. Roller; 2. Welding mechanism; 201. First sliding block; 202. Second fixed frame; 203. Second hydraulic rod; 204. Electric welding device; 205. Third connecting frame; 2 06, cleaning plate; 207, second motor; 208, driving wheel; 3, clamping mechanism; 301, second sliding block; 302, third fixed frame; 303, third hydraulic rod; 304, first arc rod; 305, second through hole; 306, auxiliary component; 3061, sliding frame; 3062, first force plate; 3063, third through hole; 3064, fixed shaft; 3065, connecting block; 3066, spring; 3067, second arc rod; 3068, rotating rod; 3069, second force plate. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Example 1: See Figure 1-Figure 4The present invention provides a technical solution: a welding device for producing double-wall corrugated pipes, comprising a supporting mechanism 1, wherein the supporting mechanism 1 comprises a first fixing frame 101, wherein the first fixing frame 101 is semicircular in shape, and the top opening is used to facilitate the removal of the corrugated pipe after the welding operation is completed, and the outer wall of the first fixing frame 101 is provided with a first through hole 102, wherein the number of the first through holes 102 is two, and the two first through holes 102 are symmetrically arranged with the central axis of the first fixing frame 101 as the center, and the first through hole 102 is used to discharge welding slag, thereby avoiding affecting the operation of the welding mechanism 2, and the first through hole 102 is used to discharge welding slag, thereby avoiding affecting the operation of the welding mechanism 2, and the first through hole 102 is used to discharge welding slag, thereby avoiding affecting the operation of the welding mechanism 2, and the first through hole 102 is used to discharge welding slag, thereby avoiding affecting the operation of the welding mechanism 2, and the first through hole 102 is used to discharge welding slag, thereby avoiding affecting the operation of the welding mechanism 2, and the first through hole 102 is used to discharge welding slag, thereby preventing ... A welding mechanism 2 is provided on the inner wall of a fixing frame 101, a first supporting frame 103 is fixedly connected to the outer wall of the first fixing frame 101, a connecting shaft 104 is fixedly connected to the outer wall of the first supporting frame 103 on one side away from the first fixing frame 101, a second supporting frame 105 is fixedly connected to the end of the connecting shaft 104 away from the first supporting frame 103, the number of the second supporting frames 105 is two, the two second supporting frames 105 are symmetrically arranged with the central axis of the first fixing frame 101 as the center, and the second supporting frame 105 is used to support the device as a whole, and also includes:

[0034] The clamping mechanism 3 includes a second sliding block 301 slidably connected to the connecting shaft 104, a first arc rod 304 is fixedly connected to the outer wall of the second sliding block 301 on one side close to the first motor 110, a second through hole 305 is provided on the inner wall of the first arc rod 304, a third hydraulic rod 303 is fixedly connected to the outer wall of the second sliding block 301 on one side away from the first arc rod 304, an auxiliary component 306 is provided at the output end of the third hydraulic rod 303, a third fixed frame 302 is fixedly connected to the outer wall of one end of the second sliding block 301 close to the third hydraulic rod 303, the third fixed frame 302 is used to play a role of fixed support for the third hydraulic rod 303, and the third fixed frame One end of 302 away from the second sliding block 301 is fixedly connected to the third hydraulic rod 303. The present invention sets up a welding device for producing double-wall corrugated pipes. When welding the corrugated pipe, the outer walls on both sides of the corrugated pipe are clamped by the clamping mechanism 3, and the welding mechanism 2 slides around the inner wall of the first fixed frame 101, so that the area of ​​the outer wall of the corrugated pipe that needs to be welded can be welded. By sliding the first sliding block 201, the bottom of the corrugated pipe can be welded, so that after the welding operation on one side of the corrugated pipe is completed, it is unnecessary to take out the half-welded corrugated pipe, turn it over and fix it, thereby increasing the welding efficiency of the corrugated pipe.

[0035] The inner wall of the first support frame 103 is fixedly connected to the first hydraulic rod 106, the output end of the first hydraulic rod 106 is fixedly connected to the first connecting frame 107, the inner wall of the first connecting frame 107 is rotatably connected to the auxiliary roller 108 via a rotating shaft, and there are two first support frames 103, which are symmetrically arranged around the central axis of the first fixed frame 101.

[0036] The bottom outer wall of the first fixing frame 101 is fixedly connected with a second connecting frame 109, and the outer wall of the second connecting frame 109 near the first fixing frame 101 is fixedly connected with a first motor 110. The output end of the first motor 110 passes through the second connecting frame 109 and is fixedly connected with a fixing rod 111. The end of the fixing rod 111 near the second connecting frame 109 is rotatably connected with a roller 112 through a rotating shaft. There are two rollers 112, and the two rollers 112 are symmetrically arranged around the central axis of the fixing rod 111. The outer surface of 112 is rollingly connected to the second through hole 305. The present invention sets a fixing rod 111 and a first arc rod 304. After the bellows is fixed in the clamping mechanism 3, the first motor 110 rotates the fixing rod 111, and the roller 112 slides on the inner wall of the first arc rod 304, so that the clamping devices on both sides of the first fixed frame 101 can be close to a certain distance, thereby shortening the distance between the two sections of the bellows, thereby reducing the width of the weld as much as possible, which is beneficial to the yield rate after welding is completed.

[0037] The working principle of this embodiment is as follows: when welding is required for the bellows, the outer wall of the bellows is clamped and fixed by the auxiliary component 306, the auxiliary roller 108 is controlled to rise by the first hydraulic rod 106, so as to support the end of the bellows close to the welding mechanism 2, the welding mechanism 2 slides on the inner wall of the first fixed frame 101, and the area of ​​the bellows that needs to be welded is welded by the electric welding device 204, the fixed rod 111 is rotated by the first motor 110, and the roller 112 on the top of the fixed rod 111 slides on the inner wall of the first arc rod 304, so that the second sliding blocks 301 on both sides of the first fixed frame 101 are close to each other, so as to minimize the width of the weld between the bellows.

[0038] Example 2: Please refer to Figure 5 On the basis of the first embodiment, the present invention provides a technical solution: the welding mechanism 2 includes a first sliding block 201, the curvature of the outer surface of the first sliding block 201 is consistent with the curvature of the inner wall of the first fixed frame 101, the outer wall of the first sliding block 201 is slidably connected to the first fixed frame 101, the outer wall of the first sliding block 201 is fixedly connected to the second motor 207, the number of the second motors 207 is four, the four second motors 207 are symmetrically arranged around the central axis of the first sliding block 201, the output end of the second motor 207 is fixedly connected to the driving wheel 208, and the outer surface of the driving wheel 208 is rollingly connected to the inner wall of the first fixed frame 101.

[0039] The outer wall of the first sliding block 201 is fixedly connected to the second fixed frame 202, the inner wall of the second fixed frame 202 is fixedly connected to the second hydraulic rod 203, the output end of the second hydraulic rod 203 is fixedly connected to the electric welding device 204, the second hydraulic rod 203 pushes the electric welding device 204, so as to weld the corrugated pipes of different diameters, the inner wall of the second fixed frame 202 is fixedly connected to the third connecting frame 205, the present invention sets a welding mechanism 2, when the second motor 207 makes the driving wheel 208 roll against the inner wall of the first fixed frame 101, the first sliding block 201 slides against the inner wall of the first fixed frame 101, the distance between the electric welding device 204 and the corrugated pipe is controlled by the second hydraulic rod 203, so that the corrugated pipes of different diameters can be welded, and the first sliding block 201 makes a circular motion around the corrugated pipe, so as to increase the efficiency of welding the outer wall of the corrugated pipe.

[0040] One end of the third connecting frame 205 away from the second fixed frame 202 is fixedly connected to the second hydraulic rod 203. The outer wall of the third connecting frame 205 is rotatably connected to a cleaning plate 206 through a rotating shaft. The cleaning plate 206 cleans the welding residue remaining on the inner wall of the first fixed frame 101. There are two cleaning plates 206, and the two cleaning plates 206 are symmetrically arranged with the central axis of the second fixed frame 202 as the center.

[0041] The working principle of this embodiment is: the driving wheel 208 is rotated by the second motor 207, so that the first sliding block 201 slides against the inner wall of the first fixed frame 101, and the distance between the electric welding device 204 and the corrugated pipe is controlled by the second hydraulic rod 203, so that the corrugated pipes of different diameters can be welded, and the cleaning plate 206 can clean the welding slag on the inner wall of the first fixed frame 101 through the sliding of the first sliding block 201.

[0042] Example 3: Please refer to Figure 6-Figure 8, the technical features different from those of the first and second embodiments, the present invention provides a technical solution: the auxiliary component 306 includes a sliding frame 3061, the inner wall of the sliding frame 3061 is fixedly connected to the third hydraulic rod 303, the inner walls on both sides of the sliding frame 3061 are slidably connected to the connecting shaft 104, the top of the sliding frame 3061 is provided with a first force plate 3062, the outer wall of the first force plate 3062 on one side close to the sliding frame 3061 is fixedly connected to a fixed shaft 3064, the number of fixed shafts 3064 There are two fixed shafts 3064, which are symmetrically arranged with the central axis of the connecting block 3065 as the center. A third through hole 3063 is opened on the inner wall of the first force-bearing plate 3062. The fixed shaft 3064 passes through the sliding frame 3061 and is fixedly connected to the connecting block 3065. A spring 3066 is fixedly connected to the top of the connecting block 3065. The spring 3066 is used for resetting the first force-bearing plate 3062. One end of the spring 3066 away from the connecting block 3065 is fixedly connected to the sliding frame 3061.

[0043] The inner wall of the sliding frame 3061 is rotatably connected to a second arc rod 3067 via a rotating shaft. The number of the second arc rods 3067 is two, and the two second arc rods 3067 are symmetrically arranged around the central axis of the first force plate 3062. The end of the second arc rod 3067 away from the sliding frame 3061 is rotatably connected to the second force plate 3069 via a rotating shaft. The inner wall of the second arc rod 3067 is rotatably connected to a rotating rod 3068 via a rotating shaft. The end of the rotating rod 3068 away from the second arc rod 3067 is rotatably connected to the connecting block 3065. The outer wall of the second force plate 3069 is rotatably connected to the second force plate 3069. The wall is slidably connected to the third through hole 3063, and the second force plate 3069 has a certain elasticity to prevent damage to the outer surface of the bellows. The present invention sets a clamping mechanism 3. When the bellows is placed on the top of the first force plate 3062, the first force plate 3062 is squeezed, so that the second arc rods 3067 on both sides are pulled by the rotating rod 3068 at the bottom of the first force plate 3062, so that the outer wall of the bellows is clamped and fixed by the second force plate 3069 on the top of the second arc rod 3067, thereby facilitating the stability of the bellows during welding operations.

[0044] The working principle of this embodiment is as follows: when the bellows is placed on the first force-bearing plate 3062, the first force-bearing plate 3062 is pressed downward under the gravity of the bellows, and the rotating rod 3068 is pulled through the connecting block 3065 at the bottom of the first force-bearing plate 3062, so that the second arc rod 3067 is flipped toward the side of the first force-bearing plate 3062 through the rotating rod 3068, so that the second force-bearing plate 3069 at the top of the second arc rod 3067 contacts the outer wall of the bellows, thereby clamping and fixing the outer wall of the bellows.

[0045] 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 other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A welding device for producing a double-wall corrugated pipe, comprising a supporting mechanism (1), the supporting mechanism (1) comprising a first fixing frame (101), an outer wall of the first fixing frame (101) being provided with a first through hole (102), an inner wall of the first fixing frame (101) being provided with a welding mechanism (2), an outer wall of the first fixing frame (101) being fixedly connected to a first supporting frame (103), an outer wall of the first supporting frame (103) being fixedly connected to a connecting shaft (104) on a side of the outer wall away from the first fixing frame (101), and an end of the connecting shaft (104) being fixedly connected to a second supporting frame (105), characterized in that: Also included are: The clamping mechanism (3) comprises a second sliding block (301) slidably connected to the connecting shaft (104); a first arc-shaped rod (304) is fixedly connected to an outer wall of the second sliding block (301) on a side close to the first motor (110); a second through hole (305) is provided on an inner wall of the first arc-shaped rod (304); a third hydraulic rod (303) is fixedly connected to an outer wall of the second sliding block (301) on a side away from the first arc-shaped rod (304); an auxiliary component (306) is provided at an output end of the third hydraulic rod (303); a third fixing frame (302) is fixedly connected to an outer wall of an end of the second sliding block (301) close to the third hydraulic rod (303); and an end of the third fixing frame (302) away from the second sliding block (301) is fixedly connected to the third hydraulic rod (303); The auxiliary component (306) comprises a sliding frame (3061), the inner wall of the sliding frame (3061) is fixedly connected to the third hydraulic rod (303), a first force-bearing plate (3062) is arranged on the top of the sliding frame (3061), a fixed shaft (3064) is fixedly connected to the outer wall of the first force-bearing plate (3062) on one side close to the sliding frame (3061), a third through hole (3063) is opened on the inner wall of the first force-bearing plate (3062), the fixed shaft (3064) passes through the sliding frame (3061) and is fixedly connected to a connecting block (3065), a spring (3066) is fixedly connected to the top of the connecting block (3065), and one end of the spring (3066) away from the connecting block (3065) is fixedly connected to the sliding frame (3061); The inner wall of the sliding frame (3061) is rotatably connected to a second arc-shaped rod (3067) via a rotating shaft; one end of the second arc-shaped rod (3067) away from the sliding frame (3061) is rotatably connected to a second force-bearing plate (3069) via a rotating shaft; the inner wall of the second arc-shaped rod (3067) is rotatably connected to a rotating rod (3068) via a rotating shaft; one end of the rotating rod (3068) away from the second arc-shaped rod (3067) is rotatably connected to a connecting block (3065); and the outer wall of the second force-bearing plate (3069) is slidably connected to the third through hole (3063); The welding mechanism (2) comprises a first sliding block (201), the outer wall of the first sliding block (201) is slidably connected to the first fixed frame (101), the outer wall of the first sliding block (201) is fixedly connected to a second motor (207), the output end of the second motor (207) is fixedly connected to a driving wheel (208), and the outer surface of the driving wheel (208) is rollingly connected to the inner wall of the first fixed frame (101); The outer wall of the first sliding block (201) is fixedly connected to a second fixing frame (202), the inner wall of the second fixing frame (202) is fixedly connected to a second hydraulic rod (203), the output end of the second hydraulic rod (203) is fixedly connected to an electric welding device (204), and the inner wall of the second fixing frame (202) is fixedly connected to a third connecting frame (205); One end of the third connecting frame (205) away from the second fixed frame (202) is fixedly connected to the second hydraulic rod (203); the outer wall of the third connecting frame (205) is rotatably connected to a cleaning plate (206) via a rotating shaft; the number of the cleaning plates (206) is two, and the two cleaning plates (206) are symmetrically arranged with the central axis of the second fixed frame (202) as the center; The bottom outer wall of the first fixing frame (101) is fixedly connected to a second connecting frame (109); the outer wall of the second connecting frame (109) on one side close to the first fixing frame (101) is fixedly connected to a first motor (110); an output end of the first motor (110) passes through the second connecting frame (109) and is fixedly connected to a fixing rod (111); one end of the fixing rod (111) close to the second connecting frame (109) is rotatably connected to a roller (112) via a rotating shaft; the outer surface of the roller (112) is rollingly connected to the second through hole (305).

2. A welding device for producing double-wall corrugated pipes according to claim 1, characterized in that: The inner wall of the first support frame (103) is fixedly connected to a first hydraulic rod (106), the output end of the first hydraulic rod (106) is fixedly connected to a first connecting frame (107), and the inner wall of the first connecting frame (107) is rotatably connected to an auxiliary roller (108) via a rotating shaft.

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