Corrugated pipe surrounding welding device

Abstract

The invention discloses a corrugated pipe surrounding welding device, and belongs to the field of welding. Comprising a rack, a concentric correction mechanism and a magnet, a left clamping mechanism used for clamping a first left round pipe is installed at the left end of the machine frame, a left clamping unit used for fixing the first left round pipe is arranged on the left clamping mechanism, a right clamping mechanism used for clamping a second right round pipe is installed at the right end of the machine frame, and a right clamping unit used for fixing the second right round pipe is arranged on the right clamping mechanism. According to the corrugated pipe surrounding welding device, the problems that when two corrugated pipes are welded through a welding trolley at present, a track of the welding trolley is often clamped to the outer surface of one corrugated pipe, then a gap is welded, the corrugated pipe on one side inclines due to weight increase, and therefore the welding efficiency is greatly improved during welding are solved. And the corrugated pipes at the two ends are difficult to position and easy to misplace during welding.

Description

Technical Field

[0001] The present application relates to the field of welding technology, and in particular to a bellows surrounding welding device. Background Art

[0002] Bellows is a tubular elastic sensitive element widely used in instruments and meters, mainly used as a measuring element of pressure measuring instruments. It works by converting pressure into displacement or force and is suitable for measuring low-pressure environments. Bellows can be divided into metal bellows and plastic bellows. The former is usually made of stainless steel or carbon steel, while the latter is made of plastic. Metal bellows are often used in situations that require a small bending radius, non-concentric axial transmission, or to absorb thermal deformation of the pipeline. Plastic bellows are often used in liquid delivery systems and have the characteristics of good flexibility, light weight, and corrosion resistance.

[0003] When two bellows are welded by a welding trolley, the track of the welding trolley is often clamped on the outer surface of one of the bellows and then the gap is welded. This will cause one side of the bellows to tilt due to the increased weight, making it difficult to position the bellows at both ends during welding and easy to misalign during welding.

[0004] Therefore, it is necessary to provide a bellows welding auxiliary device and a method of use to solve the above problems. Summary of the invention

[0005] Based on the above problems existing in the prior art, the purpose of the present application is to provide a bellows surrounding welding device to solve the problems raised in the above background technology.

[0006] The technical solution adopted by the present application to solve the technical problem is: a bellows surrounding welding device, used for welding a first bellows and a second bellows, the left and right ends of the first bellows are respectively a first left round tube and a first right round tube, the left and right ends of the second bellows are respectively a second left round tube and a second right round tube, the surrounding welding device comprises a frame, a concentric correction mechanism and a magnet;

[0007] A left clamping mechanism for clamping the first left round tube is installed at the left end of the frame, and a left clamping unit for fixing the first left round tube is arranged on the left clamping mechanism; a right clamping mechanism for clamping the second right round tube is installed at the right end of the frame, and a right clamping unit for fixing the second right round tube is arranged on the right clamping mechanism;

[0008] The concentric correction mechanism is arranged on the frame and is located below the connection between the first right circular tube and the second left circular tube. The magnet is placed on the inner circumferential wall of the first right circular tube and the second left circular tube. The bottom surface of the magnet is an arc surface. One end of the bottom surface of the magnet is in contact with the inner circumferential wall of the first right circular tube, and the other end is in contact with the inner circumferential wall of the second left circular tube.

[0009] The concentric correction mechanism comprises a first bracket, a second bracket, a sliding seat, a movable block, a first wedge block, and a second wedge block. The bottom end of the first bracket and the bottom end of the second bracket are fixed to the frame, and the two ends of the sliding seat are respectively connected to the first bracket and the second bracket for sliding up and down. One end of the sliding seat is extended upward with an extension block, and the movable block is arranged on the sliding seat. The top of the movable block is provided with a magnetic attraction part for adsorbing with a magnetic strip, and the top surface of the magnetic attraction part has an arc surface, and one end of the arc surface of the top surface of the magnetic attraction part is in contact with the outer peripheral wall of the first right circular tube, and the other end is in contact with the outer peripheral wall of the second left circular tube.

[0010] A slide groove is provided on the top surface of the first bracket, and a clamping groove is provided on one side of the extension block. The first wedge block and the second wedge block are both slidably installed in the slide groove, the first wedge block is clamped into the right end of the clamping groove, and the second wedge block is clamped into the left end of the clamping groove.

[0011] Furthermore, a through groove is penetrated downward on the upper surface of the slide seat, the movable block is connected to the through groove for up and down sliding, the bottom of the movable block is connected to the frame for up and down sliding, and the two sides of the movable block are axially symmetrically fixedly connected with limiting rings, and the diameter of the limiting rings is larger than the width of the through groove.

[0012] Furthermore, it also includes a welding assembly, which includes a welding vehicle, a circular track and an extension rod;

[0013] The welding vehicle is slidably connected to the annular track, the annular track is clamped with the outer surface of the first right circular tube or the second left circular tube, and a gear driven by a motor is arranged in the welding vehicle, and the gear is meshed with the gear ring on the annular track.

[0014] Furthermore, the extension rod is fixedly connected to the front end of the welding vehicle in the traveling direction, and one end of the extension rod is fixedly connected to a paddle, and the paddle is aligned with the connection between the first right round tube and the second left round tube;

[0015] The extension block is provided with a movable groove connected to the card slot at the top, and the movable rod is L-shaped. The longer end of the movable rod is located in the movable groove, and the shorter end of the movable rod is located below the paddle, and the length of the shorter end of the movable rod is set within the coverage range when the paddle rotates circumferentially. Inclined surfaces are provided on the left and right sides of the bottom of the longer end of the movable rod, and the spacing between the left and right inclined surfaces of the longer end of the movable rod gradually decreases from top to bottom. The right end of the upper surface of the first wedge block and the left end of the upper surface of the second wedge block are both chamfered, and the inclined surface is located above the chamfer and in contact with the chamfer. The inclined surface is affected by gravity and will not separate the first wedge block and the second wedge block through the chamfer.

[0016] Furthermore, a pushing portion protrudes upward from the bottom of the slot in the card slot;

[0017] When the movable rod moves downward to make the first wedge block and the second wedge block completely disengage from the clamping slot, the movable rod contacts the pushing portion to drive the pushing portion to move downward synchronously.

[0018] Furthermore, a first spring is provided between the left end of the first wedge block and the left end of the inner wall of the slide groove, and a second spring is provided between the left end of the first wedge block and the left end of the inner wall of the slide groove.

[0019] Furthermore, a rigid extension rod is fixedly connected to the center position of the upper surface of the magnet, one end of the extension rod is fixedly connected to a positioning block, and the positioning block is slidably connected to the support frame of the left clamping mechanism or the support frame of the right clamping mechanism up and down.

[0020] Furthermore, two buffers are provided, and the two buffers are fixedly connected to the top of the frame, one of the buffers is located between the first bracket and the outer wall of the movable block near one end of the first bracket, and the other buffer is located between the second bracket and the outer wall of the movable block near one end of the second bracket, and the two buffers are both located below the slide.

[0021] Furthermore, it also includes a linear track, a first sliding member, a second sliding member, and the linear track is fixedly connected to the top surface of the frame;

[0022] The portion of the first bellows located between the first left circular tube and the first right circular tube is the first bellows section, and the portion of the second bellows located between the second left circular tube and the second right circular tube is the second bellows section;

[0023] The first sliding member and the second sliding member are both slidably connected to the linear track, and the top ends of the first sliding member and the second sliding member are both rotatably mounted with two mutually parallel supporting rollers, and the material of the supporting rollers is rubber;

[0024] The supporting roller of the first sliding member is arranged below the first corrugated pipe section, and the supporting roller of the second sliding member is arranged below the second corrugated pipe section.

[0025] The beneficial effect of the present application is that the present application provides a bellows surrounding welding device, which can support the welding part at the bottom end of the outer surface of the first right circular tube and the second left circular tube by providing a moving block, and can generate magnetic force with the magnetic attraction part by providing a magnet, so that the inner surface of the first right circular tube and the second left circular tube are clamped with the magnetic attraction part, so that misalignment will not occur. This solves the problem that when two corrugated tubes are currently welded by a welding trolley, the track of the welding trolley is often clamped on the outer surface of one of the corrugated tubes and then the gap is welded, which causes one side of the corrugated tube to tilt due to the increase in weight, so that the corrugated tubes at both ends are difficult to position during welding, and are prone to misalignment during welding.

[0026] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings in the specification, which constitute a part of the present application, are used to provide further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0028] In the attached picture:

[0029] Figure 1 It is an overall schematic diagram of this application;

[0030] Figure 2 A schematic cross-sectional view of the bellows of the present application;

[0031] Figure 3 For this application Figure 2 Enlarged schematic diagram of area A in the middle;

[0032] Figure 4 This is a schematic diagram of the position of the supporting roller of this application;

[0033] Figure 5 A schematic diagram of the correction agency for this application;

[0034] Figure 6 A schematic diagram of the slide seat of this application;

[0035] Figure 7 This is a schematic cross-sectional view of the extension block of the present application;

[0036] Figure 8 For this application Figure 7 Enlarged schematic diagram of area B in the middle;

[0037] Fig. 9 It is a schematic diagram of the descent of the concentric correction mechanism of the present application;

[0038] Fig.10 For this application Fig. 9 Enlarged schematic diagram of the middle C area;

[0039] Among them, the reference numerals in the figure are:

[0040] 1. Frame; 11a. Left clamping mechanism; 11b. Right clamping mechanism; 12a. Left clamping unit; 12b. Right clamping unit; 2. First bellows; 2a. First left round tube; 2b. First right round tube; 2c. First bellows section; 21. Second bellows; 21a. Second left round tube; 21b. Second right round tube; 21c. Second bellows section; 3. Linear track; 4. First sliding member; 41. Second sliding member; 411. Support roller; 5. Concentric correction mechanism; 51. First bracket; 5101. Slide; 511. Second bracket ; 52, slide seat; 521, extension block; 522, through slot; 5211, slot; 5212, movable slot; 5213, pushing part; 53, movable block; 531, limiting ring; 532, magnetic attraction part; 54, first wedge block; 541, second wedge block; 5411, chamfer; 55, movable rod; 551, inclined surface; 56, first spring; 57, second spring; 6, buffer; 7, welding assembly; 71, welding car; 72, circular track; 73, extension rod; 731, pick; 8, magnet; 81, extension rod; 82, positioning block. DETAILED DESCRIPTION

[0041] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0042] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0043] like Figure 1-10 As shown, the present application provides a technical solution: a bellows encircling welding device is used to weld a first bellows 2 and a second bellows 21, the left and right ends of the first bellows 2 are respectively a first left circular tube 2a and a first right circular tube 2b, the left and right ends of the second bellows 21 are respectively a second left circular tube 21a and a second right circular tube 21b, the encircling welding device includes a frame 1, a concentric correction mechanism 5 and a magnet 8.

[0044] The left end of the frame 1 is equipped with a left clamping mechanism 11a for clamping the first left round tube 2a, and the left clamping mechanism 11a is provided with a left clamping unit 12a for fixing the first left round tube 2a. The right end of the frame 1 is equipped with a right clamping mechanism 11b for clamping the second right round tube 21b, and the right clamping mechanism 11b is provided with a right clamping unit 12b for fixing the second right round tube 21b. The left clamping unit 12a and the right clamping unit 12b can be clamped by, but not limited to, a three-claw chuck, a flat-open type start finger, and other clamps.

[0045] The concentric correction mechanism 5 is arranged on the frame 1 and is located below the connection between the first right circular tube 2b and the second left circular tube 21a. The magnet 8 is placed on the inner circumferential wall of the first right circular tube 2b and the second left circular tube 21a. The bottom surface of the magnet 8 is an arc surface. One end of the bottom surface of the magnet 8 is in contact with the inner circumferential wall of the first right circular tube 2b, and the other end is in contact with the inner circumferential wall of the second left circular tube 21a.

[0046] The concentric correction mechanism 5 includes a first bracket 51, a second bracket 511, a slide 52, a movable block 53, a first wedge block 54, and a second wedge block 541. The bottom end of the first bracket 51 and the bottom end of the second bracket 511 are fixed on the frame 1, and the two ends of the slide 52 are respectively connected to the first bracket 51 and the second bracket 511 for sliding up and down. One end of the slide 52 is extended upward with an extension block 521, and the movable block 53 is arranged on the slide 52. A magnetic attraction part 532 for adsorbing the magnetic strip 8 is arranged on the top of the movable block 53. The top surface of the magnetic attraction part 532 has a circular arc surface, and one end of the circular arc surface of the top surface of the magnetic attraction part 532 is in contact with the outer peripheral wall of the first right circular tube 2b, and the other end is in contact with the outer peripheral wall of the second left circular tube 21a.

[0047] A slide groove 5101 is provided on the top surface of the first bracket 51, and a clamping groove 5211 is provided on one side of the extension block 521. The first wedge block 54 and the second wedge block 541 are both slidably installed in the slide groove 5101, and the first wedge block 54 is clamped into the right end of the clamping groove 5211, and the second wedge block 541 is clamped into the left end of the clamping groove 5211.

[0048] The magnet 8 and the magnetic attraction portion 532 generate magnetic attraction force to align and fit the connection between the first right circular tube 2b and the second left circular tube 21a together, and the first wedge block 54 and the second wedge block 541 are inserted into the slot 5211 to prevent the movable block 53 from moving downward.

[0049] A through slot 522 runs downwardly through the upper surface of the slide seat 52, the movable block 53 is slidably connected to the through slot 522 up and down, the bottom of the movable block 53 is slidably connected to the frame 1 up and down, and the two sides of the movable block 53 are axially symmetrically fixedly connected with limit rings 531, and the diameter of the limit ring 531 is greater than the width of the through slot 522.

[0050] The movable block 53 is detachably connected to the slide seat 52, and can be taken out when the movable block 53 is no longer needed.

[0051] The surrounding welding device also includes a welding assembly 7 for welding the connection between the first right round tube 2b and the second left round tube 21a, and the welding assembly 7 includes a welding vehicle 71, a circular track 72 and an extension rod 73;

[0052] The welding vehicle 71 is slidably connected to the annular track 72 , and the annular track 72 is clamped with the outer surface of the first right circular tube 2 b or the second left circular tube 21 a . A gear driven by a motor is arranged in the welding vehicle 71 , and the gear meshes with the gear ring on the annular track 72 .

[0053] The extension rod 73 is fixedly connected to the front end of the welding vehicle 71 in the traveling direction, that is, the end close to the welding head. A paddle 731 is fixedly connected to one end of the extension rod 73. The paddle 731 is aligned with the connection between the first right round tube 2b and the second left round tube 21a.

[0054] A movable groove 5212 connected to the slot 5211 is provided at the top of the extension block 521, and the movable rod 55 is L-shaped. The longer end of the movable rod 55 is located in the movable groove 5212, and the shorter end of the movable rod 55 is located below the paddle 731, and the length of the shorter end of the movable rod 55 is set within the coverage range when the paddle 731 rotates circumferentially. Inclined surfaces 551 are provided on both sides of the bottom of the longer end of the movable rod 55, and the spacing between the left inclined surface 551 and the right inclined surface 551 of the longer end of the movable rod 55 gradually decreases from top to bottom to form an inverted triangle structure. The right end of the upper surface of the first wedge block 54 and the left end of the upper surface of the second wedge block 541 are both chamfered 5411, and the inclined surface 551 is located above the chamfer 5411 and contacts with the chamfer 5411. The inclined surface 551 is affected by gravity and will not separate the first wedge block 54 and the second wedge block 541 through the chamfer 5411.

[0055] A pushing portion 5213 protrudes upward from the bottom of the slot 5211;

[0056] When the movable rod 55 moves downward to make the first wedge block 54 and the second wedge block 541 completely disengage from the slot 5211, the movable rod 55 contacts the pushing portion 5213 to drive the pushing portion 5213 to move downward synchronously. The movable rod 55 applies thrust to the pushing portion 5213 again to weaken the magnetic attraction between the magnet 8 and the magnetic attraction portion 532, thereby separating the magnet 8 from the magnetic attraction portion 532, and the movable block 53 moves downward under gravity.

[0057] A first spring 56 is provided between the left end of the first wedge block 54 and the left end of the inner wall of the slide slot 5101 , and a second spring 57 is provided between the left end of the first wedge block 541 and the left end of the inner wall of the slide slot 5101 .

[0058] When the first wedge block 54 and the second wedge block 541 are separated, under the influence of the spring force, the first spring 56 pulls the first wedge block 54 to slide toward the left end of the slide groove 5101 to release the elastic force, and the second spring 57 pulls the second wedge block 541 to slide toward the right end of the slide groove 5101 to release the elastic force, ensuring that it is completely separated from the slot 5211.

[0059] A rigid extension rod 81 is fixedly connected to the center of the upper surface of the magnet 8. One end of the extension rod 81 is fixedly connected to a positioning block 82. The positioning block 82 is slidably connected to the support frame of the left clamping mechanism 11a or the support frame of the right clamping mechanism 11b.

[0060] When the positioning block 82 slides from the top of the support frame of the left clamping mechanism 11a or the support frame of the right clamping mechanism 11b to the bottom of the support frame of the left clamping mechanism 11a or the support frame of the right clamping mechanism 11b, it can ensure that the bottom outer surface of the magnet 8 fits with the inner surface of the first right circular tube 2b and the second left circular tube 21a.

[0061] The surround welding device also includes a buffer 6, two buffers 6 are provided, and the two buffers 6 are fixedly connected to the top of the frame 1, one buffer 6 is located between the first bracket 51 and the outer wall of the movable block 53 close to one end of the first bracket 51, and the other buffer 6 is located between the second bracket 511 and the outer wall of the movable block 53 close to one end of the second bracket 511, and the two buffers 6 are both located below the slide 52.

[0062] It plays a buffering role when the movable block 53 moves downward.

[0063] The surrounding welding device also includes a linear track 3, a first sliding member 4, a second sliding member 41, and the linear track 3 is fixedly connected to the top surface of the frame 1;

[0064] The portion of the first bellows 2 located between the first left circular tube 2a and the first right circular tube 2b is the first bellows section 2c, and the portion of the second bellows 21 located between the second left circular tube 21a and the second right circular tube 2b is the second bellows section 21c;

[0065] The first sliding member 4 and the second sliding member 41 are both slidably connected to the linear track 3. Two mutually parallel supporting rollers 411 are rotatably mounted on the top of the first sliding member 4 and the top of the second sliding member 41. The supporting rollers 411 are made of rubber.

[0066] The supporting roller 411 of the first sliding member 4 is arranged below the first corrugated tube section 2c, and the supporting roller 411 of the second sliding member 41 is arranged below the second corrugated tube section 21c.

[0067] The supporting roller 411 supports the lower part of the first corrugated pipe segment 2c and the lower part of the second corrugated pipe segment 21c to prevent the first corrugated pipe segment 2c and the second corrugated pipe segment 21c from being deformed.

[0068] In one embodiment, two bellows to be welded are positioned.

[0069] Specifically, the first sliding member 4 is moved to the center position of the area between one end of the frame 1 and the concentric correction mechanism 5, and then the second sliding member 41 is moved to the center position of the area between the other end of the frame 1 and the concentric correction mechanism 5, the first left circular tube 2a is installed in the mounting hole of the left clamping unit 12a, and the second right circular tube 21b is installed in the mounting hole of the right clamping unit 12b, and the rollers 411 respectively support the first corrugated pipe segment 2c and the second corrugated pipe segment 21c.

[0070] Lift the slide 52 upward, and the slide 52 drives the movable block 53 to rise. When the upper surface of the magnetic attraction portion 532 fits with the outer peripheral wall of the first right circular tube 2b and the second left circular tube 21a, the slot 5211 leaks out from the top of the first bracket 51. At this time, slide the first wedge block 54 and the second wedge block 541 into the slot 5211, and the first spring 56 and the second spring 57 generate elastic potential energy. The extension block 521 presses the first wedge block 54 and the second wedge block 541. The extension block 521 will not fall under the resistance of the first wedge block 54 and the second wedge block 541.

[0071] The staff inserts the magnet 8 into the first right circular tube 2b and the second left circular tube 21a, and installs the positioning block 81 at the bottom of the support frame of the left clamping mechanism 11a or the support frame of the right clamping mechanism 11b. The magnet 8 fits with the inner surface of the connection between the first right circular tube 2b and the second left circular tube 21a, and the magnet 8 generates magnetic force with the magnetic attraction part 532. Through the action of the magnetic force, the welding parts of the first corrugated tube 2 and the second corrugated tube 21 are aligned.

[0072] In another embodiment, since the concentric correction mechanism 5 is on the bottom outer surfaces of the first right circular tube 2b and the second left circular tube 21a, and in the traveling direction of the welding assembly 7, the welding assembly 7 is affected to weld the bottom outer surfaces of the first right circular tube 2b and the second left circular tube 21a.

[0073] Specifically, the annular track 72 is installed on the outer surface of the first right circular tube 2b or the second left circular tube 21a, and the position of the welding vehicle 71 is adjusted so that the paddle 731 is aligned with the connection between the first right circular tube 2b or the second left circular tube 21a. At this time, the annular track 72 is tightened to fix it on the first right circular tube 2b or the second left circular tube 21a.

[0074] The welding vehicle 71 moves clockwise along the circular track 72, and the paddle 731 contacts the movable rod 55. The movable rod 55 is pressed downward by the resistance of the paddle 731, and the inclined surface 551 on the movable rod 55 slides along the chamfer 5411. When the movable rod 55 is pressed down until the rod body contacts the first wedge block 54 and the second wedge block 541, the extension block 521 contacts the chamfer 5411. Under the influence of the spring force, the first spring 56 pulls the first wedge block 54 to slide to the left end of the slide groove 5101 to release the elastic force, and the second spring 57 pulls the second wedge block 541 to slide to the right end of the slide groove 5101 to release the elastic force, ensuring that it is completely separated from the slot 5211, and the movable rod 55 pushes again After applying force to the pushing part 5213 and weakening the magnetic attraction between the magnet 8 and the magnetic attraction part 532, since the overall weight of the movable block 53 and the slide 52 is greater than the magnetic force of the magnet 8 on the magnetic attraction part 532, the extension block 521 also moves downward under the influence of gravity, and the first wedge block 54 and the second wedge block 541 slide to the two ends of the slide groove 5101 under the action of the extension block 521 and the spring, the movable block 53 and the slide 52 descend, the movable block 53 passes through the bottom of the frame 1, and the slide 52 falls on the top of the buffer 6, and the buffer 6 cushions the fall of the slide 52, and the movable rod 55 falls into the card slot 5211 along the movable groove 5212 in the extension block 521.

[0075] At this time, the height of the movable block 53 also drops, and the welding vehicle 71 can weld the bottom outer surfaces of the first right circular tube 2b and the second left circular tube 21a along the circular track 72. Since the welding vehicle 71 has welded the top outer surfaces of the first right circular tube 2b and the second left circular tube 21a, and is supported by the supporting roller 411 at the same time, the welding parts of the first right circular tube 2b and the second left circular tube 21a will no longer be misaligned, and the movable block 53 can be removed to continue welding the outer surfaces of the first right circular tube 2b and the second left circular tube 21a.

[0076] To sum up, the device can support the welding part at the bottom end of the outer surface of the first right circular tube 2b and the second left circular tube 21a by providing a movable block 53, and can clamp the inner surface of the first right circular tube 2b and the second left circular tube 21a and the magnetic attraction part 532 by providing a magnet 8 that can generate magnetic force with the magnetic attraction part 532, so that misalignment will not occur. This solves the problem that when the two corrugated tubes are currently welded by a welding trolley, the track of the welding trolley is often clamped on the outer surface of one of the corrugated tubes and then the gap is welded, which causes one side of the corrugated tube to tilt due to the increase in weight, so that the corrugated tubes at both ends are difficult to position during welding and are prone to misalignment during welding.

[0077] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A bellows surrounding welding device, used for welding a first bellows (2) and a second bellows (21), wherein the left and right ends of the first bellows (2) are respectively a first left circular tube (2a) and a first right circular tube (2b), and the left and right ends of the second bellows (21) are respectively a second left circular tube (21a) and a second right circular tube (21b), characterized in that: The encircling welding device comprises a frame (1), a concentric correction mechanism (5) and a magnet (8); A left clamping mechanism (11a) for clamping a first left circular tube (2a) is installed at the left end of the frame (1), and a left clamping unit (12a) for fixing the first left circular tube (2a) is arranged on the left clamping mechanism (11a); a right clamping mechanism (11b) for clamping a second right circular tube (21b) is installed at the right end of the frame (1), and a right clamping unit (12b) for fixing the second right circular tube (21b) is arranged on the right clamping mechanism (11b); The concentric correction mechanism (5) is arranged on the frame (1) and is located below the connection between the first right circular tube (2b) and the second left circular tube (21a); ​​the magnet (8) is placed on the inner circumferential wall of the first right circular tube (2b) and the second left circular tube (21a); ​​the bottom surface of the magnet (8) is an arc surface; one end of the bottom surface of the magnet (8) is in contact with the inner circumferential wall of the first right circular tube (2b), and the other end is in contact with the inner circumferential wall of the second left circular tube (21a); The concentric correction mechanism (5) comprises a first bracket (51), a second bracket (511), a slide seat (52), a movable block (53), a first wedge block (54), and a second wedge block (541). The bottom end of the first bracket (51) and the bottom end of the second bracket (511) are both fixed to the frame (1). The two ends of the slide seat (52) are respectively connected to the first bracket (51) and the second bracket (511) for sliding up and down. One end of the slide seat (52) is extended upward with an extension block (521). The movable block (53) is arranged on the slide seat (52). The top of the movable block (53) is provided with a magnetic attraction portion (532) for adsorbing the magnetic strip (8). The top surface of the magnetic attraction portion (532) has an arc surface. One end of the arc surface of the top surface of the magnetic attraction portion (532) is in contact with the outer peripheral wall of the first right circular tube (2b), and the other end is in contact with the outer peripheral wall of the second left circular tube (21a). A slide groove (5101) is provided on the top surface of the first bracket (51), and a clamping groove (5211) is provided on one side of the extension block (521). The first wedge block (54) and the second wedge block (541) are both slidably installed in the slide groove (5101) to the left and right, and the first wedge block (54) is clamped into the right end of the clamping groove (5211), and the second wedge block (541) is clamped into the left end of the clamping groove (5211).

2. A bellows surrounding welding device according to claim 1, characterized in that: A through slot (522) is passed through the upper surface of the slide seat (52) downwards, the movable block (53) is connected to the through slot (522) in an up-and-down sliding manner, the bottom of the movable block (53) is connected to the frame (1) in an up-and-down sliding manner, and two sides of the movable block (53) are axially symmetrically fixedly connected with limit rings (531), and the diameter of the limit rings (531) is greater than the width of the through slot (522).

3. A bellows surrounding welding device according to claim 1, characterized in that: It also includes a welding assembly (7), wherein the welding assembly (7) includes a welding vehicle (71), a circular track (72) and an extension rod (73); The welding vehicle (71) is slidably connected to the annular track (72), the annular track (72) is clamped with the outer surface of the first right circular tube (2b) or the second left circular tube (21a), and a gear driven by a motor is arranged in the welding vehicle (71), and the gear is meshed with a gear ring on the annular track (72).

4. A bellows surrounding welding device according to claim 3, characterized in that: The extension rod (73) is fixedly connected to the front end of the welding vehicle (71) in the traveling direction, and a paddle (731) is fixedly connected to one end of the extension rod (73), and the paddle (731) is aligned with the connection between the first right circular tube (2b) and the second left circular tube (21a); The top of the extension block (521) is provided with an active groove (5212) connected with the clamping groove (5211); the active rod (55) is L-shaped; the longer end of the active rod (55) is located in the active groove (5212); the shorter end of the active rod (55) is located below the paddle (731); and the length of the shorter end of the active rod (55) is set within the coverage range when the paddle (731) rotates in a circumferential direction; and inclined surfaces (551) are provided on both left and right sides of the bottom of the longer end of the active rod (55). The distance between the left inclined surface (551) and the right inclined surface (551) of the longer end of the movable rod (55) gradually decreases from top to bottom. The right end of the upper surface of the first wedge block (54) and the left end of the upper surface of the second wedge block (541) are both chamfered (5411). The inclined surface (551) is located above the chamfer (5411) and is in contact with the chamfer (5411). The inclined surface (551) is affected by gravity and will not separate the first wedge block (54) and the second wedge block (541) through the chamfer (5411).

5. The bellows surrounding welding device according to claim 1, characterized in that: A pushing portion (5213) protrudes upward from the bottom of the slot (5211); When the movable rod (55) moves downward to completely separate the first wedge block (54) and the second wedge block (541) from the slot (5211), the movable rod (55) contacts the pushing portion (5213) to drive the pushing portion (5213) to move downward synchronously.

6. A bellows surrounding welding device according to claim 5, characterized in that: A first spring (56) is provided between the left end of the first wedge block (54) and the left end of the inner wall of the slide groove (5101), and a second spring (57) is provided between the left end of the first wedge block (541) and the left end of the inner wall of the slide groove (5101).

7. A bellows surrounding welding device according to claim 1, characterized in that: A rigid extension rod (81) is fixedly connected to the center of the upper surface of the magnet (8), one end of the extension rod (81) is fixedly connected to a positioning block (82), and the positioning block (82) is slidably connected to a support frame of the left clamping mechanism (11a) or a support frame of the right clamping mechanism (11b) up and down.

8. The bellows surrounding welding device according to claim 1, characterized in that: Two buffers (6) are provided, and the two buffers (6) are fixedly connected to the top of the frame (1), one of the buffers (6) is located between the first bracket (51) and the outer wall of the movable block (53) close to one end of the first bracket (51), and the other buffer (6) is located between the second bracket (511) and the outer wall of the movable block (53) close to one end of the second bracket (511), and the two buffers (6) are both located below the slide seat (52).

9. A bellows surrounding welding device according to claim 1, characterized in that: It also comprises a linear track (3), a first sliding member (4), a second sliding member (41), and the linear track (3) is fixedly connected to the top surface of the frame (1); The portion of the first bellows (2) located between the first left circular tube (2a) and the first right circular tube (2b) is the first bellows section (2c), and the portion of the second bellows (21) located between the second left circular tube (21a) and the second right circular tube (2b) is the second bellows section (21c); The first sliding member (4) and the second sliding member (41) are both slidably connected to the linear track (3); the top end of the first sliding member (4) and the top end of the second sliding member (41) are both rotatably mounted with two mutually parallel supporting rollers (411), and the material of the supporting rollers (411) is rubber; The supporting roller (411) of the first sliding member (4) is arranged below the first corrugated tube section (2c), and the supporting roller (411) of the second sliding member (41) is arranged below the second corrugated tube section (21c).

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