Welding fixture for coupler production

Abstract

The invention relates to the technical field of welding positioning, in particular to a welding fixture for coupler production, which comprises a base motor, clamping frames, an adjusting device mounted between the base motor and the clamping frames and a clamping assembly arranged between the clamping frames, a clamping space is formed in the middle of each clamping frame, and four sliding openings are annularly formed in each clamping frame; the clamping assembly is arranged in the sliding openings, the clamping assembly comprises four clamping blocks, and the four clamping blocks are arranged in the four sliding openings in a sliding mode; four strip-shaped grooves are annularly formed in the upper surface of the clamping frame, a heat dissipation assembly is arranged on the upper sides of the strip-shaped grooves, the heat dissipation assembly comprises an annular pipe, four limiting pipes, four sliding pipes and a connecting pipe, the annular pipe is arranged in the clamping frame, and the four limiting pipes are arranged in the four strip-shaped grooves in a sliding mode through telescopic pieces respectively. Adjustment can be conducted according to the size of a welded coupler, and therefore the cooling and heat dissipation effect on the welding position is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of welding positioning, and particularly to a welding fixture for the production of couplings. Background Art

[0002] A coupling refers to a device that connects two shafts or a shaft and a rotating part, rotates together during the transmission of motion and power, and does not disengage under normal circumstances. Sometimes it is also used as a safety device to prevent the connected machine parts from bearing excessive loads and plays an overload protection role. During the production of couplings, the shaft rod and the connecting piece need to be combined and welded.

[0003] The patent with the publication number CN106607663A discloses a welding tooling for coupling forks, including: a fork shaft and a taper shank. A through hole is provided in the middle of the fork shaft. One end of the taper shank is inserted into the through hole, and a half-coupling device is provided at the other end. The two sides of the fork shaft are connected to a first steel pipe and a second steel pipe. The other ends of the first steel pipe and the second steel pipe are provided with a first cover plate and a second cover plate. A first baffle is provided on the outside of the first cover plate, and a second baffle is provided on the outside of the second cover plate. The first baffle is fixedly connected to the first cover plate, the second baffle, and the second cover plate through bolts. The above tooling facilitates the welding process of the fork shaft and the taper shank, improves the welding accuracy and welding quality, and ensures a tight connection between the fork shaft and the steel pipe by providing a stepped structure between the fork shaft and the steel pipe.

[0004] However, during the welding process, due to the small volume of the coupling components, heat accumulation is likely to occur around the welding position, and local high temperature causes deformation of the connecting parts or key grooves of the coupling, affecting subsequent assembly. Summary of the Invention

[0005] The purpose of the present invention is to solve the disadvantages in the prior art that heat accumulation is likely to occur around the welding position, and local high temperature causes deformation of the connecting parts or key grooves of the coupling, affecting subsequent assembly, and to propose a welding fixture for the production of couplings.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions: A welding fixture for the production of couplings, including: a base motor, a clamping frame, an adjusting device installed between the base motor and the clamping frame, and a clamping assembly arranged between the clamping frames. A clamping space is provided in the middle of the clamping frame, and four sliding openings are annularly provided. The clamping assembly is arranged inside the sliding openings. The clamping assembly includes four clamping blocks, and the four clamping blocks are slidably arranged inside the four sliding openings; The upper surface of the clamping frame is annularly provided with four strip-shaped grooves, and a heat dissipation component is arranged above the strip-shaped grooves. The heat dissipation component includes an annular pipe, four limiting pipes, four sliding pipes and a connecting pipe. The annular pipe is arranged inside the clamping frame. The four limiting pipes are respectively slidably arranged inside the four strip-shaped grooves through telescopic components. Both ends of the sliding pipe are hermetically and slidably arranged inside two adjacent limiting pipes. The four limiting pipes and the four sliding pipes form a heat dissipation ring. The connecting pipe is fixedly connected between the annular pipe and the limiting pipes.

[0007] Preferably, the clamping component further includes four clamping pieces, and the four clamping pieces are respectively fixedly connected to one ends of the four clamping blocks close to the middle of the clamping space. The clamping pieces are arc-shaped pieces, and the four clamping pieces form a clamping ring.

[0008] Preferably, the telescopic component includes a slider and a telescopic pipe. The slider is limited and slidably arranged inside the strip-shaped groove. One end of the telescopic pipe is communicated with the annular pipe, and the other end is fixedly connected to the side of the slider.

[0009] Preferably, the adjusting device includes a rotating disc and four limiting rods. The rotating disc is arranged at the output end of the base motor, and four adjusting openings are formed in the rotating disc. The four limiting rods are respectively fixedly connected to the bottom of the clamping blocks and are clamped inside the adjusting openings.

[0010] Preferably, limiting components are arranged above the four limiting pipes, and the four limiting components are used to limit the welding parts.

[0011] Preferably, the limiting component includes two telescopic rods and a limiting block. The two telescopic rods are fixedly connected to the upper surface of the limiting pipe. The limiting block is vertically fixedly connected to the end of the telescopic rod far from the limiting pipe. The limiting block is an arc-shaped block.

[0012] Preferably, a plurality of mounting openings are formed in the upper side of the clamping block, cooling openings are formed in the sides of the mounting openings, and a cooling component is arranged inside the mounting openings. The cooling component is used for cooling the upper end of the shaft rod.

[0013] Preferably, the cooling component includes a plurality of cooling pipes, a communicating pipe, an elastic pipe and fins. The plurality of cooling pipes are respectively arranged inside the plurality of mounting openings. The connecting pipe is in an inverted U shape. Both ends of the plurality of cooling pipes are respectively connected to both sides of the connecting pipe. The elastic pipe is communicated between the communicating pipe and the annular pipe. The plurality of fins are fixedly connected to the inner side of the communicating pipe.

[0014] Preferably, both the limiting pipe and the sliding pipe are flat pipes, and the sliding pipe is made of an elastic material. The communicating pipe has an arc-shaped upper end and is made of an elastic material.

[0015] Preferably, an adjusting base is provided in the middle of the clamping frame. The adjusting base is used to drive the shaft rod to move up and down. The adjusting base includes a telescopic column and four telescopic arm frames. The telescopic column is vertically and fixedly connected to the middle of the clamping frame, and the four telescopic arm frames are annularly and fixedly connected to the side of the upper end of the telescopic column.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. During welding, according to the diameter of the shaft rod, the limiting tube will slide under the drive of the telescopic member, so that both ends of the sliding tube slide inside the limiting tube, changing the diameter of the heat dissipation ring, ensuring that the heat dissipation ring moves to the lower part of the welding position. During welding, the coolant inside the ring tube is introduced into the heat dissipation ring through the connecting tube, so as to uniformly dissipate heat from the welding position, avoiding local overheating of the welded parts and causing deformation of the welded parts. The present invention can be adjusted according to the size of the welded coupling, so as to ensure the cooling and heat dissipation effect of the welding position and avoid deformation of the welding position; 2. By providing a plurality of clamping rings that can form a ring to rigidly clamp the shaft rod from the outside, the deformation of the shaft rod is avoided, so as to ensure that the overall coupling will not have welding deviation and ensure the use of the coupling; 3. The heat dissipation liquid will be introduced into the telescopic tube, causing the telescopic tube to expand and extend, pushing the slider towards the middle of the clamping frame, thereby driving the heat dissipation ring above the slider to close towards the middle, automatically adapting and adjusting according to the diameter of the shaft rod welded in the middle, ensuring the heat dissipation of the welding position. There is no need to manually adjust the position of the heat dissipation ring before welding. After introducing the coolant, it will automatically adapt and adjust, so as to effectively dissipate heat from the welding of shaft rods with different diameters; 4. The base motor drives the rotating disk to rotate, so that the limiting rod slides inside the adjusting opening. In this way, the positions of multiple clamping blocks can be quickly adjusted synchronously, thereby improving the quick clamping and disassembly of shaft rods with different diameters; 5. During the movement of the heat dissipation ring, the limiting block will contact the side of the connecting member. As the heat dissipation ring moves, the telescopic rod expands and stretches, so that multiple side limiting blocks apply multiple forces of the same size and pointing to the center of the circle to the placed connecting member, completing the position limit of the connecting member, avoiding the center offset during the welding process, and ensuring the adaptability of the welded coupling; 6. The coolant is introduced into the cooling ring through the ring tube. The position of the shaft rod can be cooled and dissipated through the cooling tube. At the same time, the connecting tube is exposed outside the clamping block, which can absorb heat from the air around the clamping position to cool it, ensuring the overall temperature of the position below the welding. At the same time, a coolant outlet tube is provided below the connecting tube for discharging the heat-exchanged coolant to ensure the cooling and heat dissipation effect during long-term welding; 7. A sensor is provided inside the telescopic boom. During the process that the clamping block moves inward and clamps the shaft rod, it will drive the telescopic boom to compress. When the clamping block clamps the outside of the shaft rod, the length of the telescopic boom remains unchanged. The sensor inside the telescopic boom sends a stationary signal to the base motor, thereby preventing the clamping block from moving inward continuously and causing excessive clamping force on the shaft rod, which may cause deformation of the clamped part of the shaft rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. 6 is a front structural schematic diagram of a welding jig for coupling production proposed by the present invention; Figure 2 FIG. 9 is a bottom structural schematic diagram of a welding jig for coupling production proposed by the present invention; Figure 3 FIG. 12 is a top - view structural schematic diagram of a welding jig for coupling production proposed by the present invention; Figure 4 FIG. 15 is a cross - sectional structural schematic diagram of a welding jig for coupling production proposed by the present invention; Figure 5 FIG. 18 is a structural schematic diagram of a heat - dissipation component of a welding jig for coupling production proposed by the present invention; Figure 6 FIG. 21 is a structural schematic diagram of a limiting component of a welding jig for coupling production proposed by the present invention; Figure 7 FIG. 24 is a structural schematic diagram of a cooling component of a welding jig for coupling production proposed by the present invention; Figure 8 FIG. 27 is a structural schematic diagram of an adjusting base of a welding jig for coupling production proposed by the present invention.

[0018] In the figures: 1, base motor; 2, clamping frame; 3, adjusting device; 31, rotating disk; 32, limiting rod; 4, clamping component; 41, clamping block; 42, clamping piece; 5, heat - dissipation component; 51, annular pipe; 52, limiting pipe; 53, sliding pipe; 54, connecting pipe; 6, telescopic member; 61, slider; 62, telescopic pipe; 7, limiting component; 71, telescopic rod; 72, limiting block; 8, cooling component; 81, cooling pipe; 82, communicating pipe; 83, elastic pipe; 84, fin; 9, adjusting base; 91, telescopic column; 92, telescopic boom. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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 of the embodiments.

[0020] Terms such as "upper", "lower", "left", "right", "middle", and "one" cited in the present invention are only for the sake of clarity in narration and are not used to limit the scope of implementation of the present invention. Changes or adjustments in their relative relationships, without substantial changes in technical content, should also be regarded as the scope of implementation of the present invention.

[0021] Referring to Figures 1-8 , a welding fixture for the production of a coupling, comprising: a base motor 1, a clamping frame 2, an adjusting device 3 installed between the base motor 1 and the clamping frame 2, and a clamping assembly 4 arranged between the clamping frames 2. A clamping space is provided in the middle of the clamping frame 2, and four sliding openings are annularly provided. The clamping assembly 4 is arranged inside the sliding openings. The clamping assembly 4 includes four clamping blocks 41, and the four clamping blocks 41 are slidably arranged inside the four sliding openings; Four strip-shaped grooves are annularly provided on the upper surface of the clamping frame 2, and a heat dissipation assembly 5 is arranged above the strip-shaped grooves. The heat dissipation assembly 5 includes an annular pipe 51, four limiting pipes 52, four sliding pipes 53, and a connecting pipe 54. The annular pipe 51 is arranged inside the clamping frame 2. The four limiting pipes 52 are respectively slidably arranged inside the four strip-shaped grooves through telescopic members 6. Both ends of the sliding pipe 53 are hermetically slidably arranged inside adjacent two limiting pipes 52. The four limiting pipes 52 and the four sliding pipes 53 form a heat dissipation ring, and the connecting pipe 54 is fixedly connected between the annular pipe 51 and the limiting pipe 52.

[0022] In the embodiment applying the above technical solution, the shaft rod to be welded is placed inside the clamping assembly 4, and the connecting piece to be welded is placed above the heat dissipation assembly 5. At the same time, the welding position of the connecting piece is aligned with the welding position of the shaft rod. During welding, according to the diameter of the shaft rod, the limiting pipe 52 will slide under the drive of the telescopic member 6, so that both ends of the sliding pipe 53 slide inside the limiting pipe 52, changing the diameter of the heat dissipation ring to ensure that the heat dissipation ring moves to the lower part of the welding position. During welding, the coolant inside the annular pipe 51 is introduced into the heat dissipation ring through the connecting pipe 54, so as to uniformly dissipate heat from the welding position and avoid local overheating of the welded part, resulting in deformation of the welded part.

[0023] The present invention can be adjusted according to the size of the welded coupling, so as to ensure the cooling and heat dissipation effect of the welding position and avoid deformation of the welding position.

[0024] The preferred technical solution in this embodiment: Referring to Figure 2 and Figure 3 , the clamping assembly 4 further includes four clamping pieces 42. The four clamping pieces 42 are respectively fixedly connected to one end of the four clamping blocks 41 close to the middle of the clamping space. The clamping piece 42 is an arc-shaped piece, and the four clamping pieces 42 form a clamping ring.

[0025] During the welding process of the coupling, since the temperature at the welding position will spread to the side close to the weld seam, due to the rise of the local temperature, the shaft rod at the clamping position will be deformed. By arranging a plurality of clamping rings that can form a ring to rigidly clamp the shaft rod from the outside, the deformation of the shaft rod is avoided, thereby ensuring that the overall coupling will not have welding deviation and ensuring the use of the coupling.

[0026] Refer to Figure 3 and Figure 6 As shown, the annular tube 51 passes through the strip-shaped groove. The telescopic member 6 includes a slider 61 and a telescopic tube 62. The slider 61 is limited to slide inside the strip-shaped groove. One end of the telescopic tube 62 is communicated with the annular tube 51, and the other end is fixedly connected to the side of the slider 61.

[0027] Since the diameters of different shaft rods are different, during the welding process, the positions that need heat dissipation and cooling are different. In order to ensure the absorption of the heat diffused from the welding position, it is necessary to adjust the diameter of the heat dissipation ring according to the size of the shaft rod. Before welding, after the heat dissipation liquid is introduced into the annular tube 51, the heat dissipation liquid will be introduced into the telescopic tube 62, thereby causing the telescopic tube 62 to expand and extend, pushing the slider 61 towards the middle of the clamping frame 2, thereby driving the heat dissipation ring above the slider 61 to close towards the middle, automatically adapting and adjusting according to the diameter of the shaft rod welded in the middle, and setting the heat dissipation ring below the welding position to ensure the heat dissipation of the welding position.

[0028] Before welding, there is no need to manually adjust the position of the heat dissipation ring. After introducing the cooling liquid, it will automatically adapt and adjust, thereby effectively dissipating heat for the welding of shaft rods with different diameters.

[0029] Refer to Figure 2 As shown, the adjusting device 3 includes a rotating disk 31 and four limiting rods 32. The rotating disk 31 is arranged at the output end of the base motor 1, and four adjusting openings are formed on the rotating disk 31. The four limiting rods 32 are respectively fixedly connected to the bottom of the clamping block 41 and are clamped inside the adjusting openings.

[0030] The base motor 1 drives the rotating disk 31 to rotate, so that the limiting rods 32 slide inside the adjusting openings. Since the position of the clamping frame 2 above is fixed, the limiting rods 32 drive the clamping blocks 41 to slide inside the sliding openings, thereby clamping and limiting shaft rods with different diameters. In this way, the position of multiple clamping blocks 41 can be adjusted synchronously quickly, thereby improving the rapid clamping and disassembly of shaft rods with different diameters.

[0031] Refer to Figure 7, a limiting component 7 is provided on the upper side of each of the four limiting tubes 52, and the four limiting components 7 are used to limit the position of the connecting piece; The limiting component 7 includes two telescopic rods 71 and a limiting block 72. The two telescopic rods 71 are fixedly connected to the upper surface of the limiting tube 52. The limiting block 72 is vertically and fixedly connected to one end of the telescopic rod 71 away from the limiting tube 52. The limiting block 72 is an arc-shaped block.

[0032] Since the sizes of different connecting pieces are different, during the welding process, if the connection position is not restricted, the connecting piece and the shaft rod may not be centered during welding, resulting in different gaps at the welding positions, and thus the connection of the coupling components is offset, affecting the use of the overall assembly of the coupling. Therefore, before welding, it is necessary to limit the position of the connecting piece to make the center of the connecting piece coincide with the center of the shaft rod and ensure the consistency of the welding width.

[0033] Before welding, place the connecting piece above the heat dissipation ring. By introducing a heat dissipation liquid into the telescopic tube 62, the telescopic tube 62 expands, moving the heat dissipation ring towards the welding position. During the movement of the heat dissipation ring, the limiting block 72 will contact the side of the connecting piece. As the heat dissipation ring moves, the telescopic rod 71 stretches and contracts, so that multiple limiting blocks 72 on multiple sides apply forces of the same magnitude and pointing towards the center of the circle to the placed connecting piece, completing the position limitation of the connecting piece, avoiding the center offset during welding, and ensuring the adaptability of the welded coupling.

[0034] Refer to Figure 7 , a plurality of mounting openings are provided on the upper side of the clamping block 41. Cooling openings are provided on the sides of the mounting openings. A cooling component 8 is provided inside the mounting openings, and the cooling component 8 is used for cooling the upper end of the shaft rod; The cooling component 8 includes a plurality of cooling tubes 81, a connecting tube 82, an elastic tube 83, and fins 84. The plurality of cooling tubes 81 are respectively arranged inside the plurality of mounting openings. The connecting tube 54 is in an inverted U shape. Both ends of the plurality of cooling tubes 81 are respectively connected to both sides of the connecting tube 54. The elastic tube 83 is connected between the connecting tube 82 and the annular tube 51. The plurality of fins 84 are fixedly connected to the inner side of the connecting tube 82; Both the limiting tube 52 and the sliding tube 53 are flat tubes, and the sliding tube 53 is made of an elastic material. The connecting tube 82 has an arc-shaped upper end and is made of an elastic material.

[0035] During the welding process, not only the connecting piece is affected by high temperature, but the shaft rod is also affected by the welding heat. In order to avoid the heat deformation of the welding end of the shaft rod, it is also necessary to cool and dissipate the heat of the shaft rod; Since most of the heat of the shaft rod accumulates at the welding end during the welding process, by arranging a plurality of cooling pipes 81 near the welding position, the coolant is introduced into the cooling ring through the annular pipe 51, and the position of the shaft rod can be cooled and dissipated heat through the cooling pipes 81. At the same time, the connecting pipe 82 is exposed outside the clamping block 41, which can absorb heat from the air around the clamping position to ensure the overall temperature of the position below the welding. At the same time, a coolant outlet pipe is arranged below the connecting pipe 82 for discharging the heat-exchanged coolant to ensure the cooling and heat dissipation effect during long-term welding.

[0036] The connecting piece and the shaft rod are simultaneously cooled and dissipated heat by the upper heat dissipation component 5 and the lower cooling component 8, which improves the cooling efficiency and ensures the cooling effect at the same time.

[0037] Refer to Figure 8 , an adjustment base 9 is arranged in the middle of the clamping frame 2, and the adjustment base 9 is used to drive the shaft rod to move up and down. The adjustment base 9 includes a telescopic column 91 and four telescopic arm frames 92. The telescopic column 91 is vertically and fixedly connected to the middle of the clamping frame 2, and the four telescopic arm frames 92 are annularly and fixedly connected to the upper side of the telescopic column 91.

[0038] Since the lengths and diameters of different shaft rods are different, during the process of placing the shaft rod, in order to prevent the shorter shaft rod from falling to the bottom of the clamping space, or when the connecting piece needs to be welded in the middle of the shaft rod and other situations where the position of the shaft rod needs to be adjusted, the adjustment base 9 can complete the adjustment of the position of the shaft rod according to the usage requirements.

[0039] At the same time, sensors are arranged inside the telescopic arm frame 92. During the process of the clamping block 41 moving inward to clamp the shaft rod, it will drive the telescopic arm frame 92 to be compressed. When the clamping block 41 clamps the outside of the shaft rod, the length of the telescopic arm frame 92 does not change. The sensors arranged inside the telescopic arm frame 92 send a stationary signal to the base motor 1, so as to prevent the clamping block 41 from continuing to move inward and causing too much clamping force on the shaft rod, thereby causing deformation of the clamped part of the shaft rod.

[0040] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A welding fixture for coupling production, comprising: A base motor (1), a clamping frame (2), an adjusting device (3) installed between the base motor (1) and the clamping frame (2), and a clamping assembly (4) arranged between the clamping frames (2), characterized in that a clamping space is arranged in the middle of the clamping frame (2), and four sliding openings are opened in an annular shape, the clamping assembly (4) is arranged inside the sliding opening, and the clamping assembly (4) includes four clamping blocks (41), and the four clamping blocks (41) are slidably arranged inside the four sliding openings; The upper surface of the clamping frame (2) is provided with four strip grooves in an annular shape. A heat dissipation assembly (5) is provided on the upper side of the strip grooves. The heat dissipation assembly (5) comprises an annular tube (51), four position-limiting tubes (52), four sliding tubes (53) and a connecting tube (54). The annular tube (51) is provided inside the clamping frame (2). The four position-limiting tubes (52) are respectively slidably provided inside the four strip grooves through telescopic members (6). Both ends of the sliding tube (53) are respectively sealed and slidably provided inside two adjacent position-limiting tubes (52). The four position-limiting tubes (52) and the four sliding tubes (53) form a heat dissipation ring. The connecting tube (54) is fixedly connected between the annular tube (51) and the position-limiting tube (52).

2. A welding fixture for coupling production according to claim 1, characterized in that: The clamping assembly (4) further comprises four clamping plates (42), the four clamping plates (42) being respectively fixedly connected to one end of the four clamping blocks (41) close to the middle of the clamping space, the clamping plates (42) being arc-shaped plates, and the four clamping plates (42) forming a clamping ring.

3. A welding fixture for coupling production according to claim 1, characterized in that: The annular tube (51) passes through the strip groove, and the telescopic member (6) comprises a slider (61) and a telescopic tube (62). The slider (61) is slidably disposed inside the strip groove, and one end of the telescopic tube (62) is in communication with the annular tube (51), and the other end is fixedly connected to a side edge of the slider (61).

4. A welding fixture for coupling production according to claim 1, characterized in that: The adjustment device (3) comprises a rotating disk (31) and four limiting rods (32); the rotating disk (31) is arranged at the output end of the base motor (1), and four adjustment openings are opened on the rotating disk (31); the four limiting rods (32) are respectively fixedly connected to the bottom of the clamping block (41) and are clamped inside the adjustment openings.

5. A welding fixture for coupling production according to claim 1, characterized in that: A limiting assembly (7) is provided on the upper side of each of the four limiting tubes (52), and the four limiting assemblies (7) are used to limit the position of the connecting piece.

6. A welding fixture for coupling production according to claim 5, characterized in that: The limiting assembly (7) comprises two telescopic rods (71) and a limiting block (72), wherein the two telescopic rods (71) are fixedly connected to the upper surface of the limiting tube (52), and the limiting block (72) is vertically fixedly connected to one end of the telescopic rod (71) away from the limiting tube (52), and the limiting block (72) is an arc-shaped block.

7. A welding fixture for coupling production according to claim 1, characterized in that: A plurality of mounting openings are provided on the upper side of the clamping block (41), a cooling opening is provided on the side of the mounting opening, a cooling assembly (8) is provided inside the mounting opening, and the cooling assembly (8) is used for cooling the upper end of the shaft rod.

8. A welding fixture for coupling production according to claim 7, characterized in that: The cooling assembly (8) comprises a plurality of cooling tubes (81), a connecting tube (82), an elastic tube (83) and fins (84); the plurality of cooling tubes (81) are respectively arranged inside the plurality of mounting openings; the connecting tube (54) is in an inverted U shape; both ends of the plurality of cooling tubes (81) are respectively arranged to be connected to both sides of the connecting tube (54); the elastic tube (83) is connected between the connecting tube (82) and the annular tube (51); and the plurality of fins (84) are fixedly connected to the inner side of the connecting tube (82).

9. A welding fixture for coupling production according to claim 8, characterized in that: The limiting tube (52) and the sliding tube (53) are both flat tubes, and the sliding tube (53) is made of an elastic material. The connecting tube (82) has an arc-shaped upper end and is made of an elastic material.

10. A welding fixture for coupling production according to claim 1, characterized in that: An adjustment base (9) is provided in the middle of the clamping frame (2), and the adjustment base (9) is used to drive the shaft rod to move up and down. The adjustment base (9) comprises a telescopic column (91) and four telescopic arms (92), wherein the telescopic column (91) is vertically fixedly connected to the middle of the clamping frame (2), and the four telescopic arms (92) are annularly fixedly connected to the upper side of the telescopic column (91).

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