Clamping tool for connecting piece welding

Abstract

The invention discloses a clamping tool for connecting piece welding, and relates to the technical field of welding. An arc-shaped clamping piece capable of moving in a reciprocating mode is arranged on one side of an annular guide base and used for clamping and positioning the peripheral side of an elbow piece on a silencer, a horizontal linkage rod is fixed to a welding power base, a plurality of flange limiting parts are arranged on the inner side of the welding power base and used for conducting inserting and limiting on flange pieces on the silencer, and the flange pieces on the silencer can be clamped and positioned through the arc-shaped clamping piece. The annular guide seat is sleeved with the welding assembly in a sliding mode, the positioning seat is used for being matched with the corresponding horizontal linkage rod in an inserted mode, and a first welding seam between the elbow piece and the pipe body piece and a second welding seam between the flange piece and the pipe body piece both correspond to one welding part. Through the combined action of the arc-shaped clamping piece, the welding bearing assembly and the flange limiting part, the welding space of the first welding seam and the second welding seam on the whole silencer is sufficient, welding work is conveniently achieved through annular movement of the welding part, and then welding work of the whole silencer is facilitated.

Description

Technical Field

[0001] The present invention belongs to the technical field of welding, and particularly relates to a clamping tool for welding connecting parts. Background Art

[0002] A muffler as a conventional connecting part refers to an air flow pipeline with noise propagation. It can use noise reduction devices such as pipes and elbows with sound-absorbing linings or pipes with sudden changes in cross-sectional area and other acoustic impedance discontinuities to attenuate or reflect back the noise in the pipeline. The former is called a resistive muffler, the latter is called a reactive muffler, and there is also an impedance composite muffler.

[0003] The mufflers in the prior art generally consist of an elbow part, a pipe body part, and a flange part. The two ends of the pipe body part are respectively sleeved with the elbow part and the flange part, and at the same time, it is necessary to weld the connection seams between the elbow part and the pipe body part and between the flange part and the pipe body part.

[0004] When the existing connecting part welding equipment is in use, after the elbow part, the pipe body part, and the flange part are clamped and fixed through the cooperation of each clamping component, the welding space reserved on the entire muffler is often small, which is not conducive to the welding operation of the muffler. For this reason, we provide a clamping tool for welding connecting parts to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a clamping tool for welding connecting parts. Through the specific structural design of the clamping and positioning component, the flange limiting component, the welding support component, and the welding component, the problem that the welding space reserved after the existing muffler is clamped and fixed is small and not conducive to the welding operation of the muffler is solved.

[0006] To solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention is a clamping tool for connecting piece welding, including a clamping and positioning assembly. The clamping and positioning assembly includes an annular guiding seat. On one side of the annular guiding seat, there is an arc-shaped clamping piece that can reciprocate horizontally. The arc-shaped clamping piece is used for clamping and positioning the circumference of the elbow piece on the muffler. A flange limiting assembly is installed on the other side of the annular guiding seat. The flange limiting assembly includes a welding power seat. A horizontal linkage rod is fixed on the welding power seat. Inside the welding power seat, there are several flange limiting parts. The flange limiting parts are used for inserting and limiting the flange piece on the muffler. A welding support assembly is fixedly installed on the clamping and positioning assembly. The welding support assembly includes a welding support part slidably installed on the inner wall of the annular guiding seat. A welding assembly is slidably sleeved on the annular guiding seat. The welding assembly includes two symmetrically arranged welding parts and a positioning seat. The positioning seat is used for plugging and cooperating with the corresponding horizontal linkage rod. The first weld seam between the elbow piece and the pipe body piece and the second weld seam between the flange piece and the pipe body piece each correspond to a welding part.

[0007] In some embodiments, the clamping and positioning assembly further includes a bearing frame. At the bottom of the bearing frame, there is a horizontally installed seat fixedly provided. On the top of the horizontally installed seat, there is a vertically installed seat fixedly provided. On the top of the horizontally installed seat, there is a horizontal guide rail fixedly provided. The annular guiding seat is fixedly installed inside the bearing frame. A positioning cylinder is installed at the inner bottom of the bearing frame. The output end of the positioning cylinder is in through-sliding fit with the annular guiding seat.

[0008] In some embodiments, on the top of the bearing frame, there is a horizontally supporting seat fixedly provided. On the top of the horizontally supporting seat, there is a limiting channel opened. On the horizontally supporting seat, there is a moving frame slidably connected to the limiting channel. The arc-shaped clamping piece is fixedly connected to the moving frame. A clamping control cylinder is installed on the top of the horizontally supporting seat. The output end of the clamping control cylinder is fixedly connected to the moving frame.

[0009] In some embodiments, the flange limiting assembly further includes a flange limiting frame slidably connected to the horizontal guide rail. A limiting hydraulic cylinder is installed on the vertically installed seat. The output end of the limiting hydraulic cylinder is fixedly connected to the flange limiting frame. The welding power seat is rotatably installed on the side of the flange limiting frame away from the limiting hydraulic cylinder. An external gear ring is fixedly installed on the welding power seat. The horizontal linkage rod is located inside the external gear ring. A power motor is installed on the side of the flange limiting frame close to the limiting hydraulic cylinder. The output end of the power motor is connected with a power gear meshing with the external gear ring.

[0010] In some embodiments, the flange limiting portion includes a flange limiting rod disposed inside the external tooth ring and fixedly connected to the flange limiting frame. The flange limiting rod is inserted and fitted with a positioning groove on the corresponding positioning seat, and a limiting disk for abutting against the flange member is fixedly installed on the flange limiting rod.

[0011] In some embodiments, the welding support portion includes a welding support bracket slidably sleeved on the annular guide seat. Two arc-shaped support members are symmetrically and fixedly installed at the top of the welding support bracket. The elbow member and the flange member are respectively supported by the corresponding arc-shaped support members. A plurality of first guide wheels are installed on one side of the arc-shaped support member through a rotating shaft, and the first guide wheels are in rolling fit with the circumferential side surface of the pipe member. The welding support assembly further includes two symmetrically arranged fixing frames, and the fixing frames and the bearing frame are connected by fasteners. A connecting plate is installed on one side of the welding support bracket close to the fixing frame, and the connecting plate and the fixing frames on both sides thereof are connected by first elastic members in an arc shape.

[0012] In some embodiments, the welding assembly further includes a circumferential movement portion slidably sleeved on the annular guide seat. A first through port arranged radially is formed on the circumferential movement portion. A second through port with the same diameter as the first through port is formed at the top of the annular guide seat. A magnetic suction hydraulic cylinder is installed on the top of the bearing frame, and a magnetic member with the same diameter as the second through port is connected to the output end of the magnetic suction hydraulic cylinder. A welding mounting seat is arranged below the circumferential movement portion, and an electromagnet magnetically attracted to the magnetic member is installed on the top of the welding mounting seat.

[0013] In some embodiments, two limiting guide plates are symmetrically and fixedly arranged on the top of the welding mounting seat. The circumferential movement portion is slidably connected with the limiting guide plates on both sides thereof. A second elastic member is arranged between the welding mounting seat and the circumferential movement portion. Arc-shaped pushing plates are fixedly arranged on opposite sides of the circumferential movement portion, and the arc-shaped pushing plates are used to push the welding support bracket to slide along the inner wall of the annular guide seat. The positioning seat is fixedly installed on the inner wall of the arc-shaped pushing plate. Two vertical mounting plates are symmetrically and fixedly arranged at the bottom of the welding mounting seat, and a second guide wheel is connected between the vertical mounting plates through a rotating shaft. The second guide wheel is in rolling fit with the circumferential side surface of the pipe member. The welding portion is composed of a welder and a welding head installed on the welding mounting seat. The welding head at the position of the first weld is close to the first weld, and the welding head at the position of the second weld is close to the second weld.

[0014] The present invention has the following beneficial effects: 1. The present invention clamps and positions one side of the elbow part through the arc-shaped clamping member, supports the bottom of the pipe part through the welding support assembly, and inserts and limits one side of the flange part through the flange limiting part, so that there is sufficient welding space at the first weld seam and the second weld seam on the entire muffler, facilitating the circumferential movement of the welding part to achieve the welding work, and thus being beneficial to the welding operation of the entire muffler.

[0015] 2. When the present invention controls the welding assembly to rotate along the annular guide seat through the power motor, the welding part gradually welds the first weld seam and the second weld seam. By synchronously welding the first weld seam and the second weld seam, the welding efficiency of the entire muffler is greatly improved. In order to ensure the welding quality of the first weld seam and the second weld seam, the control system can set the operating parameters of the power motor to ensure that the movement frequency of the welding assembly on the annular guide seat can meet the welding requirements.

[0016] 3. When the present invention controls the welding assembly to gradually rotate along the annular guide seat through the power motor, the welding support bracket rotates a certain angle under the pushing force of the welding assembly, so that the welding support bracket moves to the set position. During this process, the first weld seam and the second weld seam are welded again through the rotation of the welding part. During the welding process, the entire muffler is always supported by the welding support assembly, thereby improving the stability of the entire muffler during the welding operation and being beneficial to ensuring the welding quality of the muffler. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is the welding flow chart of the welding clamping tooling for the connecting piece in the present invention.

[0019] Figure 2 It is the structural schematic diagram of the welding clamping tooling for the connecting piece in the present invention.

[0020] Figure 3 It is Figure 2 the side view of the structure.

[0021] Figure 4 It is the matching relationship diagram between the muffler and the welding assembly in the present invention.

[0022] Figure 5 It is Figure 4 the side view of the structure.

[0023] Figure 6 This is a schematic structural view of the clamping and positioning component in the present invention.

[0024] Figure 7 This is a schematic structural view of the flange limit component in the present invention.

[0025] Figure 8 is Figure 7 a schematic structural view from another angle.

[0026] Figure 9 This is a schematic structural view of the welding support component in the present invention.

[0027] Figure 10 This is a schematic structural view of the welding component in the present invention.

[0028] Figure 11 is Figure 10 a side view of the structure.

[0029] In the drawings, the list of components represented by each reference numeral is as follows:

[0030] 1 - clamping and positioning component, 101 - annular guide seat, 102 - arc-shaped clamping member, 103 - bearing frame, 104 - horizontal mounting seat, 105 - vertical mounting seat, 106 - horizontal guide rail, 107 - positioning cylinder, 108 - horizontal support seat, 109 - limiting channel, 110 - moving frame, 111 - clamping control cylinder, 112 - magnetic suction hydraulic cylinder, 113 - magnetic member, 2 - silencer, 3 - elbow member, 4 - flange limit component, 401 - welding power seat, 402 - horizontal linkage rod, 403 - flange limit frame, 404 - limiting hydraulic cylinder, 405 - external gear ring, 406 - power motor, 407 - power gear, 408 - flange limit rod, 409 - limiting disc, 5 - flange member, 6 - welding support component, 601 - welding support bracket, 602 - arc-shaped support member, 603 - first guide wheel, 604 - fixing frame, 605 - connecting plate, 606 - first elastic member, 7 - welding component, 701 - positioning seat, 702 - positioning groove, 703 - circumferential moving part, 704 - first through port, 705 - second through port, 706 - welding mounting seat, 707 - electromagnet, 708 - limiting guide plate, 709 - second elastic member, 710 - arc-shaped pushing plate, 711 - vertical mounting plate, 712 - second guide wheel, 713 - welder, 714 - welding head, 8 - pipe body member, 9 - first weld seam, 10 - second weld seam. Detailed implementation manners

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] Specific Embodiment 1: Please refer to Figure 1-11 , the present invention is a clamping tool for connecting piece welding, including a clamping and positioning assembly 1, a flange limiting assembly 4, a welding support assembly 6 and a welding assembly 7; the clamping and positioning assembly 1 includes an annular guide seat 101, and an arc-shaped clamping piece 102 capable of horizontal reciprocating movement is arranged on one side of the annular guide seat 101. The arc-shaped clamping piece 102 is used for clamping and positioning the circumferential side of the elbow piece 3 on the muffler 2; the flange limiting assembly 4 is installed on the other side of the annular guide seat 101. The flange limiting assembly 4 includes a welding power seat 401, a horizontal linkage rod 402 is fixed on the welding power seat 401, and a plurality of flange limiting parts are arranged inside the welding power seat 401. The flange limiting parts are used for inserting and limiting the flange piece 5 on the muffler 2; the welding support assembly 6 is fixedly installed on the clamping and positioning assembly 1. The welding support assembly 6 includes a welding support part slidably installed on the inner wall of the annular guide seat 101; the welding assembly 7 is slidably sleeved on the annular guide seat 101. The welding assembly 7 includes two symmetrically arranged welding parts and a positioning seat 701. The positioning seat 701 is used for inserting and cooperating with the corresponding horizontal linkage rod 402. The first weld seam 9 between the elbow piece 3 and the pipe body piece 8 and the second weld seam 10 between the flange piece 5 and the pipe body piece 8 each correspond to a welding part.

[0033] In some embodiments, such as Figure 2 and Figure 6As shown in the figure, the clamping and positioning assembly 1 further includes a bearing frame 103. A horizontal mounting base 104 is fixedly arranged at the bottom of the bearing frame 103. A vertical mounting base 105 is fixedly arranged at the top of the horizontal mounting base 104. A horizontal guide rail 106 is fixedly arranged at the top of the horizontal mounting base 104. The annular guide seat 101 is fixedly installed inside the bearing frame 103. A positioning cylinder 107 is installed at the inner bottom of the bearing frame 103. The output end of the positioning cylinder 107 is in through-sliding fit with the annular guide seat 101. The output end of the positioning cylinder 107 is a rod structure, which can be used for the insertion limit of the welding support assembly 6. A horizontal support seat 108 is fixedly arranged at the top of the bearing frame 103. A limit channel 109 is opened at the top of the horizontal support seat 108. A moving frame 110 slidably connected to the limit channel 109 is arranged on the horizontal support seat 108. The arc-shaped clamping member 102 is fixedly connected to the moving frame 110. A clamping control cylinder 111 is installed at the top of the horizontal support seat 108. The output end of the clamping control cylinder 111 is fixedly connected to the moving frame 110. When the moving frame 110 is controlled by the clamping control cylinder 111 to slide horizontally along the limit channel 109, the arc-shaped clamping member 102 can be driven by the moving frame 110 to perform a horizontal reciprocating motion.

[0034] In some embodiments, as Figure 3 、 Figure 7 and Figure 8 shown, the flange limit assembly 4 further includes a flange limit frame 403 slidably connected to the horizontal guide rail 106. A limit hydraulic cylinder 404 is installed on the vertical mounting base 105. The output end of the limit hydraulic cylinder 404 is fixedly connected to the flange limit frame 403. The sliding of the flange limit frame 403 on the horizontal mounting base 104 is controlled by the limit hydraulic cylinder 404. The welding power seat 401 is rotatably installed on the side of the flange limit frame 403 away from the limit hydraulic cylinder 404. An external gear ring 405 is fixedly installed on the welding power seat 401. The horizontal linkage rod 402 is located inside the external gear ring 405. A power motor 406 is installed on the side of the flange limit frame 403 close to the limit hydraulic cylinder 404. The output end of the power motor 406 is connected to a power gear 407 meshing with the external gear ring 405. When the power motor 406 is started, the power gear 407 can be controlled to rotate. Under the meshing action between the power gear 407 and the external gear ring 405, the rotation of the welding power seat 401 is realized. In this way, the welding assembly 7 can be driven to slide along the annular guide seat 101 by the horizontal linkage rod 402 moving synchronously with the welding power seat 401.

[0035] Further, the flange limiting portion includes a flange limiting rod 408 disposed inside the external tooth ring 405 and fixedly connected to the flange limiting frame 403. The flange limiting rod 408 is inserted and fitted with a positioning groove 702 on the corresponding positioning seat 701. A limiting disc 409 for abutting against the flange member 5 is fixedly installed on the flange limiting rod 408. When the flange limiting frame 403 is controlled by the limiting hydraulic cylinder 404 to move towards the annular guiding seat 101, the horizontal linkage rod 402 that moves synchronously with the flange limiting frame 403 gradually approaches the positioning seat 701, and the flange limiting rod 408 that moves synchronously with the flange limiting frame 403 gradually approaches the flange member 5 until the flange limiting rod 408 is horizontally inserted into the mounting hole on the flange member 5. At this time, the limiting disc 409 on the flange limiting rod 408 tightly presses against one side of the flange member 5, and at the same time, the horizontal linkage rod 402 is horizontally inserted into the corresponding positioning groove 702. Subsequently, by controlling the power gear 407 to rotate through the power motor 406, the welding assembly 7 can be moved along the annular guiding seat 101.

[0036] In some embodiments, such as Figure 2 , Figure 3 and Figure 9 shown, the welding support portion includes a welding support frame 601 slidably sleeved on the annular guiding seat 101. Two arc-shaped support members 602 are symmetrically and fixedly installed on the top of the welding support frame 601. The elbow member 3 and the flange member 5 are respectively supported by the corresponding arc-shaped support members 602. A plurality of first guide wheels 603 are installed on one side of the arc-shaped support member 602 through a rotating shaft, and the first guide wheels 603 are in rolling fit with the circumferential side surface of the pipe member 8. The welding support assembly 6 further includes two symmetrically arranged fixing frames 604. The fixing frames 604 are connected to the bearing frame 103 through fasteners. A connecting plate 605 is installed on one side of the welding support frame 601 close to the fixing frame 604. The connecting plate 605 is connected to the fixing frames 604 on both sides thereof through first elastic members 606 with an arc-shaped structure. In the initial state, the welding support frame 601 is at the bottom of the annular guiding seat 101 (as Figure 1 shown), and the first elastic members 606 on both sides thereof are in a natural state. At this time, the welding support frame 601 is limited by the output end of the positioning cylinder 107.

[0037] After the entire muffler 2 is supported on the welding support assembly 6, the arc-shaped clamping member 102 tightly presses against and clamps the elbow member 3. At the same time, the flange limit rod 408 is horizontally inserted into the mounting hole on the flange member 5, and the limit disk 409 on the flange limit rod 408 tightly presses against one side of the flange member 5. The horizontal linkage rod 402 is horizontally inserted into the corresponding positioning groove 702. In this way, the entire muffler 2 is clamped and positioned on the clamping and positioning assembly 1. Subsequently, the power motor 406 is started through the control system, and the power gear 407 is controlled to rotate by the power motor 406. Under the meshing action between the power gear 407 and the external tooth ring 405, the rotation of the welding power seat 401 is realized. In this way, the welding assembly 7 can be driven to slide along the annular guide seat 101 by the horizontal linkage rod 402 that moves synchronously with the welding power seat 401 until the welding assembly 7 rotates counterclockwise to the set position on the left, such as Figure 1 shown in (A). At this time, the welding assembly 7 on the left is in contact with the welding support bracket 601 below.

[0038] Subsequently, the welding assembly 7 is again controlled to gradually rotate clockwise along the annular guide seat 101 by the power motor 406 until the welding assembly 7 slides to the set position along the annular guide seat 101, that is, Figure 1 the position of the welding assembly 7 in (B). During this process, the welding part gradually welds the first weld seam 9 and the second weld seam 10. By synchronously welding the first weld seam 9 and the second weld seam 10, the welding efficiency of the entire muffler 2 is greatly improved (i.e., the first-stage welding is completed). When the welding assembly 7 moves to Figure 1 the position in (B), the control system immediately shuts down each welding part. In order to ensure the welding quality of the first weld seam 9 and the second weld seam 10, the control system can set the operating parameters of the power motor 406 to ensure that the movement frequency of the welding assembly 7 on the annular guide seat 101 can meet the welding requirements.

[0039] Then, the welding assembly 7 is again controlled to gradually rotate clockwise by a certain angle along the annular guide seat 101 by the power motor 406 until the welding assembly 7 moves to the bottom position on the annular guide seat 101 (i.e., the welding assembly 7 moves to the position of the original welding support bracket 601). During this process, the welding support bracket 601 rotates clockwise by a certain angle under the pushing force of the welding assembly 7, so that the welding support bracket 601 moves to Figure 1 the position in (C). At this time, the entire muffler 2 is still supported (diagonally supported) by the welding support assembly 6. At the same time, during this process, the welding of the first weld seam 9 and the second weld seam 10 is completed again by the clockwise rotation of the welding part (i.e., the second-stage welding is completed). Subsequently, the welding assembly 7 is again controlled to gradually rotate counterclockwise along the annular guide seat 101 by the power motor 406 until the welding assembly 7 moves toFigure 1 the position in (D) and then move to Figure 1 the position in (E).

[0040] Subsequently, the welding assembly 7 is gradually rotated counterclockwise by a certain angle along the annular guide base 101 again through the power motor 406 until the welding assembly 7 moves to the bottom position on the annular guide base 101 (i.e., the welding assembly 7 moves to the position of the original welding support bracket 601). During this process, the welding support bracket 601 is again driven by the welding assembly 7 and rotates counterclockwise by a certain angle, so that the welding support bracket 601 moves to Figure 1 the position in (F). At this time, the entire muffler 2 is still supported (diagonally supported) by the welding support assembly 6. At the same time, during this process, the first weld seam 9 and the second weld seam 10 are welded again by the counterclockwise rotation of the welding part (i.e., the third-stage welding is completed). In this way, the welding of the first weld seam 9 and the second weld seam 10 on the entire muffler 2 is completed. Finally, the welding assembly 7 is gradually rotated clockwise along the annular guide base 101 again through the power motor 406 until the welding assembly 7 and the welding support bracket 601 return to the initial positions, that is, the welding assembly 7 returns to the top position of the annular guide base 101, and the welding support bracket 601 returns to the bottom position of the annular guide base 101.

[0041] Specific Embodiment 2, on the basis of Specific Embodiment 1, as Figure 2 , Figure 10 and Figure 11 shown, the welding assembly 7 further includes a circumferential moving part 703 slidably sleeved on the annular guide base 101. A first through port 704 arranged radially is formed on the circumferential moving part 703. A second through port 705 with the same diameter as the first through port 704 is formed at the top of the annular guide base 101. A magnetic adsorption hydraulic cylinder 112 is installed at the top of the bearing frame 103. The output end of the magnetic adsorption hydraulic cylinder 112 is connected with a magnetic part 113 with the same diameter as the second through port 705. A welding mounting seat 706 is arranged below the circumferential moving part 703. An electromagnet 707 magnetically attracted to the magnetic part 113 is installed at the top of the welding mounting seat 706. In the initial state, the magnetic part 113 on the magnetic adsorption hydraulic cylinder 112 is directly above the annular guide base 101. The first through port 704, the second through port 705 and the magnetic part 113 on the circumferential moving part 703 are coaxial. The electromagnet 707 is in a power-off and demagnetized state.

[0042] Before clamping and positioning the silencer 2 onto the clamping and positioning assembly 1, first control the magnetic member 113 to move downward through the first through-port 704 and the second through-port 705 by the magnetic suction hydraulic cylinder 112 to fit onto the electromagnet 707. After controlling the electromagnet 707 to be energized and magnetized, the magnetic member 113 is tightly adsorbed onto the electromagnet 707. Subsequently, lift the welding mounting base 706 to a set height by the retraction movement of the magnetic suction hydraulic cylinder 112.

[0043] After placing the elbow part 3 inside the arc-shaped supporting member 602 at the corresponding position, support the elbow part 3 by the arc-shaped supporting member 602. Subsequently, control the moving frame 110 to move along the limiting channel 109 towards the elbow part 3 by the clamping control cylinder 111 until the arc-shaped clamping member 102 tightly presses against the periphery of the elbow part 3. At this time, the position of one side of the elbow part 3 is limited by the arc-shaped clamping member 102. Then, sleeved and installed one end of the pipe body part 8 inside the elbow part 3. Next, place the flange part 5 inside the arc-shaped supporting member 602 at the corresponding position, support the flange part 5 by the arc-shaped supporting member 602. Subsequently, control the flange limiting frame 403 to move towards the annular guiding seat 101 by the limiting hydraulic cylinder 404. The horizontal linkage rod 402 that moves synchronously with the flange limiting frame 403 gradually approaches the positioning seat 701, and the flange limiting rod 408 that moves synchronously with the flange limiting frame 403 gradually approaches the flange part 5 until the flange limiting rod 408 horizontally inserts into the mounting hole on the flange part 5. At this time, the limiting disc 409 on the flange limiting rod 408 tightly presses against one side of the flange part 5, and at the same time, the horizontal linkage rod 402 horizontally inserts into the corresponding positioning groove 702. In this way, the flange part 5 is supported by multiple flange limiting rods 408, and the position of one side of the flange part 5 is limited by multiple limiting discs 409, that is, the clamping and positioning of the entire silencer 2 is completed.

[0044] In some embodiments, such as Figure 10 and Figure 11 shown, two limiting guide plates 708 are symmetrically and fixedly arranged at the top of the welding mounting base 706. The circumferential moving part 703 is slidably connected (always slidably connected) with the limiting guide plates 708 on both sides of it. A second elastic member 709 is arranged between the welding mounting base 706 and the circumferential moving part 703. Arc-shaped pushing plates 710 are fixedly arranged on both opposite sides of the circumferential moving part 703. The arc-shaped pushing plates 710 are used to push the welding support bracket 601 to slide along the inner wall of the annular guiding seat 101. In Figure 1In different working states, the arc-shaped pushing plate 710 is always in contact with the welding support bracket 601; the positioning seat 701 is fixedly installed on the inner wall of the arc-shaped pushing plate 710. At the bottom of the welding mounting seat 706, two vertical mounting plates 711 are symmetrically and fixedly arranged. A second guide wheel 712 is connected between the vertical mounting plates 711 through a rotating shaft. The second guide wheel 712 is in rolling fit with the circumferential side surface of the pipe member 8 (during the welding process, the second guide wheel 712 rolls along the circumferential side surface of the pipe member 8). The welding part is composed of a welding device 713 and a welding head 714 installed on the welding mounting seat 706 (this is the prior art, so it will not be described in detail here. In this embodiment, the welding device 713 can adopt a plasma welding device, and the welding head 714 can select a plasma welding head). The welding head 714 at the position of the first weld 9 is close to the first weld 9, and the welding head 714 at the position of the second weld 10 is close to the second weld 10; after the clamping and positioning of the entire muffler 2 are completed, the magnetic adsorption hydraulic cylinder 112 is used to control the welding mounting seat 706 to gradually move downward until the second guide wheel 712 abuts against the circumferential side surface of the pipe member 8. At this time, each second elastic member 709 is in a compressed state, that is, by means of the elastic force of each second elastic member 709, the second guide wheel 712 is tightly attached to the circumferential side surface of the pipe member 8. At this time, the welding head 714 at the position of the first weld 9 is close to and aligned with the first weld 9, and the welding head 714 at the position of the second weld 10 is close to and aligned with the second weld 10. After controlling the electromagnet 707 to cut off the power and demagnetize, the magnetic adsorption hydraulic cylinder 112 is used to control the magnetic member 113 to move upward through the second through hole 705 and the first through hole 704 to return to the initial position. After the welding work of the entire muffler 2 is completed, the welding mounting seat 706 is first lifted to a set height by the same control method as above. After the welded muffler 2 is removed, the magnetic adsorption hydraulic cylinder 112 is used to control the magnetic member 113 to move upward and reset.

[0045] In the description of this specification, the description with reference to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0046] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, according to the content of this specification, many modifications and variations can be made. These embodiments are selected and specifically described in this specification in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A welding clamping tool for a connecting piece, characterized in that, Comprising: A clamping and positioning assembly (1), the clamping and positioning assembly (1) includes an annular guide seat (101), on one side of the annular guide seat (101) there is an arc-shaped clamping member (102) that can reciprocate horizontally, and the arc-shaped clamping member (102) is used for clamping and positioning the circumference of the elbow member (3) on the muffler (2); A flange limiting assembly (4), the flange limiting assembly (4) is installed on the other side of the annular guide seat (101), the flange limiting assembly (4) includes a welding power seat (401), on the welding power seat (401) there is a horizontally linked rod (402) fixed, and inside the welding power seat (401) there are several flange limiting parts, and the flange limiting parts are used for inserting and limiting the flange member (5) on the muffler (2); A welding support assembly (6), the welding support assembly (6) is fixedly installed on the clamping and positioning assembly (1), and the welding support assembly (6) includes a welding support part slidably installed on the inner wall of the annular guide seat (101); A welding assembly (7), the welding assembly (7) is slidably sleeved on the annular guide seat (101), the welding assembly (7) includes two symmetrically arranged welding parts and a positioning seat (701), the positioning seat (701) is used for plug-in cooperation with the corresponding horizontally linked rod (402), and both the first weld seam (9) between the elbow member (3) and the pipe member (8) and the second weld seam (10) between the flange member (5) and the pipe member (8) correspond to one welding part.

2. The clamping tool for welding a connecting piece according to claim 1, wherein, The clamping and positioning assembly (1) further includes a bearing frame (103), at the bottom of the bearing frame (103) there is a horizontally installed seat (104) fixedly provided, on the top of the horizontally installed seat (104) there is a vertically installed seat (105) fixedly provided, on the top of the horizontally installed seat (104) there is a horizontal guide rail (106) fixedly provided, the annular guide seat (101) is fixedly installed inside the bearing frame (103), and at the inner bottom of the bearing frame (103) there is a positioning cylinder (107) installed, and there is a through sliding fit between the output end of the positioning cylinder (107) and the annular guide seat (101).

3. The clamping tooling for connecting piece welding according to claim 2, characterized in that, On the top of the bearing frame (103) there is a horizontally supported seat (108) fixedly provided, on the top of the horizontally supported seat (108) there is a limiting channel (109) opened, on the horizontally supported seat (108) there is a moving frame (110) slidably connected to the limiting channel (109), the arc-shaped clamping member (102) is fixedly connected to the moving frame (110), and on the top of the horizontally supported seat (108) there is a clamping control cylinder (111) installed, and the output end of the clamping control cylinder (111) is fixedly connected to the moving frame (110).

4. A clamping tool for connecting piece welding according to claim 3, characterized in that The flange limit assembly (4) further includes a flange limit frame (403) slidably connected to the horizontal guide rail (106). A limit hydraulic cylinder (404) is installed on the vertical mounting base (105). The output end of the limit hydraulic cylinder (404) is fixedly connected to the flange limit frame (403). The welding power seat (401) is rotatably installed on the side of the flange limit frame (403) away from the limit hydraulic cylinder (404). An external gear ring (405) is fixedly installed on the welding power seat (401). The horizontal linkage rod (402) is located inside the external gear ring (405). A power motor (406) is installed on the side of the flange limit frame (403) close to the limit hydraulic cylinder (404). The output end of the power motor (406) is connected to a power gear (407) meshing with the external gear ring (405).

5. A welding clamping tooling for a connecting piece according to claim 4, characterized in that, The flange limit part includes a flange limit rod (408) arranged inside the external gear ring (405) and fixedly connected to the flange limit frame (403). The flange limit rod (408) is inserted and matched with the positioning groove (702) on the corresponding positioning seat (701). A limit disc (409) for abutting against the flange part (5) is fixedly installed on the flange limit rod (408).

6. The clamping tooling for connecting piece welding according to claim 5, wherein, The welding support part includes a welding support frame (601) slidably sleeved on the annular guide seat (101). Two arc-shaped support members (602) are symmetrically and fixedly installed on the top of the welding support frame (601). The elbow part (3) and the flange part (5) are respectively supported by the corresponding arc-shaped support members (602). A plurality of first guide wheels (603) are installed on one side of the arc-shaped support member (602) through a rotating shaft. The first guide wheels (603) are in rolling fit with the peripheral side surface of the pipe member (8). The welding support assembly (6) further includes two symmetrically arranged fixing frames (604). The fixing frames (604) are connected to the bearing frame (103) through fasteners. A connecting plate (605) is installed on the side of the welding support frame (601) close to the fixing frame (604). The connecting plate (605) is connected to the fixing frames (604) on both sides of it through first elastic members (606) with arc-shaped structures.

7. The clamping tool for connecting piece welding according to claim 6, wherein, The welding assembly (7) further includes a circumferential movement part (703) slidably sleeved on the annular guide seat (101). A first through opening (704) arranged in the radial direction is formed on the circumferential movement part (703). A second through opening (705) with the same diameter as the first through opening (704) is formed on the top of the annular guide seat (101). A magnetic adsorption hydraulic cylinder (112) is installed on the top of the bearing frame (103). The output end of the magnetic adsorption hydraulic cylinder (112) is connected to a magnetic member (113) with the same diameter as the second through opening (705). A welding mounting seat (706) is arranged below the circumferential movement part (703). An electromagnet (707) magnetically attracted to the magnetic member (113) is installed on the top of the welding mounting seat (706).

8. A clamping tool for connecting piece welding according to claim 7, characterized in that, Two limiting guide plates (708) are symmetrically and fixedly arranged on the top of the welding mounting seat (706). The circumferential moving part (703) is slidably connected to the limiting guide plates (708) on both sides thereof. A second elastic member (709) is arranged between the welding mounting seat (706) and the circumferential moving part (703). Arc-shaped pushing plates (710) are fixedly arranged on both opposite sides of the circumferential moving part (703). The arc-shaped pushing plates (710) are used to push the welding support bracket (601) to slide along the inner wall of the annular guide seat (101). The positioning seat (701) is fixedly installed on the inner wall of the arc-shaped pushing plate (710). Two vertical mounting plates (711) are symmetrically and fixedly arranged at the bottom of the welding mounting seat (706). A second guide wheel (712) is connected between the vertical mounting plates (711) through a rotating shaft. The second guide wheel (712) is in rolling fit with the circumferential side surface of the pipe member (8). The welding part is composed of a welding device (713) and a welding head (714) installed on the welding mounting seat (706). The welding head (714) at the position of the first weld seam (9) is close to the first weld seam (9), and the welding head (714) at the position of the second weld seam (10) is close to the second weld seam (10).

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