A portable bracket for metal jig welding

Abstract

The present invention relates to the field of welding technology and discloses a portable bracket for welding metal jigs, comprising a portable bracket body equipped with a metal ring jig, and a side extension plate fixedly provided on the portable bracket body. The present invention provides a method for starting a motor body and, with the cooperation of an exhaust gas collection component, collecting exhaust gas generated by welding in a centralized manner, and with the cooperation of a cooling component, cooling the exhaust gas, and then discharging the exhaust gas under filtration by a filter element body, so as to play the role of cooling the welding part by reusing the exhaust gas after filtration. By collecting and reusing the exhaust gas, the emission of harmful substances into the atmosphere can be significantly reduced, thereby reducing pollution to the environment. By extracting the air from the welding part, the air flow in the area can be accelerated, forming a convection effect, the hot air is extracted, and the cold air is continuously replenished, thereby taking away part of the heat of the welding part and achieving initial cooling.

Description

Technical Field

[0001] The present invention relates to the technical field of welding, in particular to a portable bracket for welding metal jigs. Background Art

[0002] Jigs are a broad category of tools used in carpentry, ironwork, fittery, machinery, electronic control, and other handicrafts. They are primarily used to assist in controlling position or motion. Jigs can be divided into three categories: process assembly jigs, project test jigs, and circuit board test jigs.

[0003] In the patent application with application announcement number CN217045181U, it includes a base plate, two mounting grooves are provided on the base plate, one end of the two mounting grooves is rotatably connected to the base plate, and the openings of the two mounting grooves are close to each other; two ear plates are fixed on the base plate, the two ear plates are respectively located on the outside of the two mounting grooves, and a double-threaded screw is rotatably installed between the two ear plates, both ends of the double-threaded screw are threadedly connected to mounting blocks, and connecting rods are rotatably installed on the two mounting blocks, and the top ends of the two connecting rods are respectively rotatably connected to the two mounting grooves. The device installs the two components of the jig in the mounting grooves respectively, and the angle between the two components can be adjusted by rotating the double-threaded screw to adapt to the processing angle, thereby facilitating welding operations and improving welding efficiency.

[0004] In the prior art including the above-mentioned patents, among the many jigs is a jig for positioning metal bellows (for example, municipal sewage pipes). The jig is ring-shaped. When welding the positioning jig, and to ensure welding efficiency, a portable bracket is usually used to load and position the jig, and it is welded by a welding gun. In the existing welding steps, natural cooling is usually used when cooling the metal jig, and the weld and the surrounding area will experience high temperature. If the cooling rate is too slow, it will lead to undesirable microstructures in the heat-affected zone, such as the formation of coarse grains and precipitated phases. These changes in microstructure will directly affect the mechanical properties and corrosion resistance of the weld. Summary of the Invention

[0005] The problem to be solved by the present invention is that it is difficult for the existing portable bracket to cool down the welding part of the jig.

[0006] To solve the above technical problems, the technical solution of the present invention is: a portable bracket for metal jig welding, comprising a portable bracket body equipped with a metal ring jig, a side extension plate fixedly provided on the portable bracket body, and an exhaust gas collection assembly provided on the side extension plate;

[0007] The exhaust gas collection assembly includes an integrated refrigeration cylinder fixed on the side extension plate, a mounting cylinder is fixedly provided on the inner wall of the integrated refrigeration cylinder, a re-blowing pipe is fixedly provided on the arc-shaped outer wall of the integrated refrigeration cylinder, and one end of the re-blowing pipe is connected to the interior of the integrated refrigeration cylinder, a mounting frame is fixedly provided on the integrated refrigeration cylinder, a motor body is installed on the mounting frame, an output end of the motor body is connected to a rotating shaft through a coupling, a first pulley is fixedly provided on one end of the rotating shaft, and a cooling assembly is provided on the mounting cylinder;

[0008] The cooling assembly includes a gear fan fixed on the first pulley, and the mounting frame is slidably provided with a circular rack, and the inner wall of the circular rack is fixedly provided with two groups of inner racks meshing with the gear fan, and the outer wall of the circular rack is fixedly provided with an outer rack, and the inner wall of the integrated refrigeration cylinder is rotatably provided with a guide ring, and the guide ring is fixedly provided with a fan-shaped gear ring meshing with the outer rack, and the inner wall of the integrated refrigeration cylinder is fixedly provided with two limiting rings, and the two limiting rings are respectively located at both ends of the integrated refrigeration cylinder, and a pair of first cooling plates are slidably provided between the two limiting rings, and a sliding arrangement is provided between the two limiting rings. A pair of second cooling plates are provided, and a first guide rod is fixedly provided on one side of each of the first cooling plates and is slidably connected to the two limiting rings, and a second guide rod is fixedly provided on the other side of each of the first cooling plates and is slidably connected to the two limiting rings, and a first guide column is fixedly provided on one side of each of the second cooling plates and is slidably connected to the two limiting rings, and a second guide column is fixedly provided on the other side of each of the second cooling plates and is slidably connected to the two limiting rings, the bottom ends of the two first guide rods are slidably connected to the top of the guide ring, and the bottom ends of the two first guide columns are slidably connected to the top of the guide ring.

[0009] Preferably, the two inner racks are distributed in a circular array around the rotating shaft, and the mounting frame is provided with a reciprocating groove matching the circular rack.

[0010] Preferably, each of the limiting rings is provided with four straight sliding grooves matching the two first guide rods and the two first guide columns, and the four straight sliding grooves are distributed in a circular array on each limiting ring, and each of the limiting rings is provided with four arcuate sliding grooves matching the two second guide rods and the two second guide columns, and the four arcuate sliding grooves are distributed in a circular array on each limiting ring.

[0011] Preferably, the guide ring is provided with two first guide grooves matching the two first guide rods, the guide ring is provided with two second guide grooves matching the two first guide columns, and a plurality of semiconductor refrigeration fins are installed on the arc-shaped inner wall of the integrated refrigeration cylinder.

[0012] Preferably, a fan shaft is rotatably connected to the inner wall of the re-blowing pipe, a second belt ring is fixedly connected to the curved outer wall of the fan shaft, a belt body is sleeved between the first pulley and the second belt ring, a fan body is fixedly provided on the curved outer wall of the fan shaft on one side of the second belt ring, and a filter element body is provided at one end of the re-blowing pipe.

[0013] Preferably, two movable holes matching the belt body are opened on the arc-shaped outer wall of the compound blowing pipe, two limiting sleeves are sleeved on the arc-shaped outer wall of the fan shaft, and both limiting sleeves are fixedly connected to the inner wall of the compound blowing pipe.

[0014] Preferably, a pair of cooling tubes are provided on the two first cooling plates, and another pair of cooling tubes are provided on the two second cooling plates.

[0015] Preferably, a rotation hole matching the rotating shaft is provided on the mounting bracket, and the motor body and the mounting bracket are fixedly connected by bolts.

[0016] Preferably, an air inlet is provided at one end of the mounting tube, a mounting hole is provided at the other end of the mounting tube, an air outlet is provided at the other end of the re-blowing pipe, and the air inlet is aligned with the welding position of the outer wall of the metal ring fixture.

[0017] Preferably, two receiving seats are fixedly provided on the top of the portable bracket body, and the two receiving seats are in contact with the arc-shaped outer wall of the metal ring fixture.

[0018] Compared with the prior art, the technical solution of the present invention has the following advantages:

[0019] (1) The present invention starts the motor body and, with the cooperation of the exhaust gas collection component, can collect the exhaust gas generated by welding in a centralized manner. With the cooperation of the cooling component, the exhaust gas can be cooled and then discharged under the filtration of the filter element body. The exhaust gas can be filtered and reused to cool the welding part. By collecting and reusing these exhaust gases, the harmful substances discharged into the atmosphere can be significantly reduced, thereby reducing the pollution to the environment. By extracting the air from the welding part, the air flow in the area can be accelerated, forming a convection effect. The hot air is extracted and the cold air is continuously replenished, thereby taking away part of the heat of the welding part and achieving initial cooling.

[0020] (2) The present invention starts the motor body and, with the cooperation of the exhaust gas collection component and the cooling component, enables the two first cooling plates and the two second cooling plates on the mounting cylinder to enter the interior of the mounting cylinder in turn, and the two first cooling plates or the two second cooling plates located between the integrated refrigeration cylinder and the mounting cylinder can automatically cool down, thereby playing a role in cooling down the exhaust gas drawn into the interior of the integrated refrigeration cylinder. At the same time, the two first cooling plates and the two second cooling plates alternately enter the interior of the mounting cylinder, which can improve the continuity of cooling the air inside the mounting cylinder, thereby improving the cooling efficiency inside the mounting cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0022] Figure 2 This is a schematic diagram of the front structure of the portable bracket body of the present invention;

[0023] Figure 3 This is a schematic structural diagram of the exhaust gas collection assembly of the present invention;

[0024] Figure 4 This is a schematic diagram of the connection structure between the installation tube and the re-blowing pipe of the present invention;

[0025] Figure 5 For the present invention Figure 4 A partial enlarged view of middle A;

[0026] Figure 6 This is a schematic diagram of the connection structure between the first pulley and the second pulley of the present invention;

[0027] Figure 7 This is a schematic diagram of the cooling assembly structure of the present invention;

[0028] Figure 8 For the present invention Figure 7 A partial enlarged view of B in the middle;

[0029] Figure 9 This is a schematic diagram of the connection structure between the rotating shaft and the fan body of the present invention;

[0030] Figure 10 This is a schematic diagram of the connection structure between the first cooling plate and the second cooling plate and the guide plate of the present invention;

[0031] Figure 11 This is a schematic diagram of the guide ring structure of the present invention;

[0032] Figure 12 This is a schematic diagram of the cooling pipe structure of the present invention.

[0033] In the figure: 1. Portable bracket body; 11. Metal ring fixture; 12. Side extension plate;

[0034] 2. Exhaust gas collection assembly; 21. Integrated refrigeration cylinder; 22. Mounting cylinder; 23. Re-blowing pipe; 231. Filter element body; 24. Motor body; 241. Mounting bracket; 25. Rotating shaft; 26. First pulley; 27. Belt body; 28. Second belt loop; 29. ​​Fan shaft; 291. Fan body;

[0035] 3. Cooling assembly; 31. Circular rack; 311. Inner rack; 312. Tooth fan; 32. Outer rack; 33. Fan-shaped gear ring; 34. Guide ring; 341. First guide groove; 342. Second guide groove; 35. Limiting ring; 351. Straight slide groove; 352. Arc slide groove; 36. First cooling plate; 361. First guide rod; 362. Second guide rod; 37. Second cooling plate; 371. First guide column; 372. Second guide column; 38. Cooling pipe. DETAILED DESCRIPTION

[0036] To make the purpose, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0037] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the usual meanings understood by persons of ordinary skill in the field to which this disclosure belongs. The words “include” or “comprise” and the like used in this disclosure mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. The words “connect” or “connected” and the like are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. “Up”, “down”, “left”, “right” and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0038] like Figures 1 to 12 As shown, the present invention provides a portable bracket for metal jig welding, comprising a portable bracket body 1 equipped with a metal ring jig 11, a side extension plate 12 fixedly provided on the portable bracket body 1, and an exhaust gas collection assembly 2 provided on the side extension plate 12;

[0039] The exhaust gas collection assembly 2 includes an integrated refrigeration cylinder 21 fixed to the side extension plate 12, a mounting cylinder 22 is fixedly provided on the inner wall of the integrated refrigeration cylinder 21, a re-blowing pipe 23 is fixedly provided on the curved outer wall of the integrated refrigeration cylinder 21, and one end of the re-blowing pipe 23 is connected to the interior of the integrated refrigeration cylinder 21, a mounting frame 241 is fixedly provided on the integrated refrigeration cylinder 21, a motor body 24 is mounted on the mounting frame 241, an output end of the motor body 24 is connected to a rotating shaft 25 through a coupling, a first pulley 26 is fixedly provided at one end of the rotating shaft 25, and a cooling assembly 3 is provided on the mounting cylinder 22;

[0040] The cooling assembly 3 includes a gear fan 312 fixed on the first pulley 26, a circular rack 31 is slidably provided on the mounting frame 241, two sets of inner racks 311 meshing with the gear fan 312 are fixedly provided on the inner wall of the circular rack 31, an outer rack 32 is fixedly provided on the outer wall of the circular rack 31, a guide ring 34 is rotatably provided on the inner wall of the integrated refrigeration cylinder 21, a sector-shaped gear ring 33 meshing with the outer rack 32 is fixedly provided on the guide ring 34, two limiting rings 35 are fixedly provided on the inner wall of the integrated refrigeration cylinder 21, and the two limiting rings 35 are respectively located at both ends of the integrated refrigeration cylinder 21, a pair of first cooling plates 36 are slidably provided between the two limiting rings 35, and the two limiting rings 35 slide between them. A pair of second cooling plates 37 are provided, and a first guide rod 361 slidably connected to the two limit rings 35 is fixedly provided on one side of each first cooling plate 36, and a second guide rod 362 slidably connected to the two limit rings 35 is fixedly provided on the other side of each first cooling plate 36. A first guide column 371 slidably connected to the two limit rings 35 is fixedly provided on one side of each second cooling plate 37, and a second guide column 372 slidably connected to the two limit rings 35 is fixedly provided on the other side of each second cooling plate 37. The bottom ends of the two first guide rods 361 are slidably connected to the top of the guide ring 34, and the bottom ends of the two first guide columns 371 are slidably connected to the top of the guide ring 34;

[0041] Two inner racks 311 are arranged in a circular array around the rotating shaft 25, and a reciprocating slide matching the circular racks 31 is provided on the mounting frame 241;

[0042] Each retaining ring 35 is provided with four straight grooves 351 that match the two first guide rods 361 and the two first guide posts 371, and the four straight grooves 351 are distributed in a circular array on each retaining ring 35. Each retaining ring 35 is provided with four arcuate grooves 352 that match the two second guide rods 362 and the two second guide posts 372, and the four arcuate grooves 352 are distributed in a circular array on each retaining ring 35.

[0043] The guide ring 34 is provided with two first guide grooves 341 matching the two first guide rods 361 , and the guide ring 34 is provided with two second guide grooves 342 matching the two first guide posts 371 . A plurality of semiconductor refrigeration fins are mounted on the arc-shaped inner wall of the integrated refrigeration cylinder 21 .

[0044] A fan shaft 29 is rotatably connected to the inner wall of the combined blowing pipe 23, and a second belt ring 28 is fixedly connected to the curved outer wall of the fan shaft 29. A belt body 27 is sleeved between the first pulley 26 and the second belt ring 28. A fan body 291 is fixedly provided on the curved outer wall of the fan shaft 29 on one side of the second belt ring 28. A filter element body 231 is provided at one end of the combined blowing pipe 23;

[0045] The curved outer wall of the re-blowing pipe 23 is provided with two movable holes that match the belt body 27. The curved outer wall of the fan shaft 29 is sleeved with two limit sleeves, and the two limit sleeves are fixedly connected to the inner wall of the re-blowing pipe 23.

[0046] A pair of cooling tubes 38 is provided on the two first cooling plates 36 , and another pair of cooling tubes 38 is provided on the two second cooling plates 37 ;

[0047] The mounting bracket 241 is provided with a rotation hole that matches the rotating shaft 25 , and the motor body 24 and the mounting bracket 241 are fixedly connected by bolts.

[0048] An air inlet is provided at one end of the mounting tube 22, a mounting hole is provided at the other end of the mounting tube 22, and an air outlet is provided at the other end of the re-blowing tube 23. The air inlet is aligned with the welding position of the outer wall of the metal ring fixture 11;

[0049] Two receiving seats are fixedly provided on the top of the portable bracket body 1, and the two receiving seats are in contact with the arc-shaped outer wall of the metal ring fixture 11;

[0050] When it is necessary to weld the metal ring jig 11 on the portable bracket body 1, the welding gun can be inserted into the inside of the mounting tube 22, and then the welding gun can be fixed to the mounting tube 22 by bolts. At this time, there is a certain gap between the output end of the welding gun and the air inlet of the mounting tube 22, and the other end of the welding gun fits in with the mounting hole of the mounting tube 22. During the welding process, the motor body 24 can be started, and then the first pulley 26 fixed to the end of the rotating shaft 25 can be driven to rotate under the connection of the rotating shaft 25. At this time, the second belt ring 28 can be driven to rotate under the connection of the belt body 27, and at the same time, the fan shaft 29 is made to revolve around and be fixed to the inner wall of the re-blowing pipe 23. The two limit sleeves rotate at the connection position of the two limit sleeves, and the fan body 291 and the fan shaft 29 rotate synchronously. At this time, there is a negative pressure between the inside of the double-blowing pipe 23 and the inside of the mounting cylinder 22, which can allow the exhaust gas generated by welding to enter the inside of the double-blowing pipe 23 through the air inlet opened at the end of the mounting cylinder 22. At this time, the exhaust gas can be filtered by the filter element body 231 and discharged from the air outlet of the double-blowing pipe 23, which can collect and filter the exhaust gas. In this process, the rotation of the first pulley 26 can drive the gear fan 312 fixed at its bottom end to rotate. At this time, the gear fan 312 can mesh with the inner rack 311 fixed on the inner wall of the circular rack 31 above the gear fan 312, as shown in FIG. Figure 5The rotation of the gear fan 312 can drive the circular rack 31 to slide to the left. At this time, the outer rack 32 can mesh with the sector gear ring 33 fixed on the guide ring 34, driving the guide ring 34 to rotate around the connection position with the circular rack 31. At this time, the first guide post 371 fixed on each second cooling plate 37 can slide inside the second guide groove 342, and the first guide post 371 can be limited by the straight slide groove 351 opened on the limiting ring 35, and the second guide post 372 fixed on the second cooling plate 37 can slide inside the arc slide groove 352 opened on the limiting ring 35, so that the two second cooling plates 37 can gradually slide into the inside of the mounting tube 22. At the same time, the first guide rod 361 fixed on each first cooling plate 36 can slide inside the first guide groove 341, and the first guide rod 361 can be limited by the straight slide groove 351 opened on the limiting ring 35 The second guide rod 362 fixed on the first cooling plate 36 can slide inside the arc-shaped slide groove 352 provided on the limiting ring 35, so that the two first cooling plates 36 can gradually slide to the outside of the mounting cylinder 22. At this time, the air between the mounting cylinder 22 and the integrated refrigeration cylinder 21 can make the temperature of this part of the air at a relatively low state with the cooperation of the semiconductor refrigeration plate. At this time, this part of the air can absorb the temperature of the surface of the cooling tube 38 on the first cooling plate 36, which can play a role in lowering the internal temperature of the mounting cylinder 22. At the same time, the cooling tube 38 on the two second cooling plates 37 can absorb the temperature of the exhaust gas inhaled by the mounting cylinder 22, and can cool the exhaust gas. With the continuous output of the motor body 24, the re-blowing pipe 23 can discharge gas with a lower temperature. At this time, the cold air discharged from the re-blowing pipe 23 can cool the part where the welding is completed.

[0051] The working principle and use process of the present invention are as follows: first, the welding gun is inserted into the inside of the mounting cylinder 22, and then the welding gun is fixed to the mounting cylinder 22 by bolts. At this time, there is a certain gap between the output end of the welding gun and the air inlet of the mounting cylinder 22, and the other end of the welding gun is fitted with the mounting hole of the mounting cylinder 22. During the welding process, the motor body 24 can be started, and then the first pulley 26 fixed to the end of the rotating shaft 25 can be driven to rotate under the connection of the rotating shaft 25. At this time, the second belt ring 28 can be driven to rotate under the connection of the belt body 27, and at the same time, the fan shaft 29 is rotated around the connection position of the two limit sleeves fixed to the inner wall of the double-blowing pipe 23, and the fan body 291 is rotated synchronously with the fan shaft 29. At this time, the double-blowing pipe There is a negative pressure between the interior of 23 and the interior of the mounting cylinder 22, which allows the exhaust gas generated by welding to enter the interior of the re-blowing pipe 23 through the air inlet opened at the end of the mounting cylinder 22. At this time, the exhaust gas can be filtered by the filter element body 231 and discharged from the air outlet of the re-blowing pipe 23. During this process, the rotation of the first pulley 26 can drive the gear fan 312 fixed at its bottom end to rotate. At this time, the gear fan 312 can mesh with the inner rack 311 fixed on the inner wall of the circular rack 31 above the gear fan 312. The rotation of the gear fan 312 can drive the circular rack 31 to slide to one side. At this time, the outer rack 32 can mesh with the fan-shaped gear ring 33 fixed on the guide ring 34, driving the guide ring 34 to rotate around the connection position with the circular rack 31. At this time, each second cold The first guide post 371 fixed on the cooling plate 37 can slide inside the second guide groove 342, and the first guide post 371 can be limited by the straight groove 351 opened on the limiting ring 35, and the second guide post 372 fixed on the second cooling plate 37 can slide inside the arc groove 352 opened on the limiting ring 35, so that the two second cooling plates 37 can gradually slide into the inside of the mounting tube 22. At the same time, the first guide rod 361 fixed on each first cooling plate 36 can slide inside the first guide groove 341, and the first guide rod 361 can be limited by the straight groove 351 opened on the limiting ring 35, and the second guide rod 362 fixed on the first cooling plate 36 can slide in the arc groove 352 opened on the limiting ring 35 Inside, the two first cooling plates 36 can be gradually slid to the outside of the mounting cylinder 22. At this time, the air between the mounting cylinder 22 and the integrated refrigeration cylinder 21 can be kept at a relatively low temperature with the cooperation of the semiconductor refrigeration plate. At this time, this part of the air can absorb the temperature of the surface of the cooling tube 38 on the first cooling plate 36, which can play a role in lowering the internal temperature of the mounting cylinder 22. At the same time, the cooling tube 38 on the two second cooling plates 37 can absorb the temperature of the exhaust gas inhaled by the mounting cylinder 22, and cool the exhaust gas. With the continuous output of the motor body 24, the re-blowing pipe 23 can discharge gas with a lower temperature. At this time, the cold air discharged by the re-blowing pipe 23 can cool the part where the welding is completed.

[0052] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the scope of the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the spirit and scope of protection of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the scope of protection of the present invention.

Claims

1. A portable bracket for welding metal jigs, comprising a portable bracket body equipped with a metal ring jig, characterized in that: A side extension plate is fixedly provided on the portable bracket body, and an exhaust gas collecting assembly is provided on the side extension plate; The exhaust gas collecting assembly includes an integrated refrigeration cylinder fixed on the side extension plate, the inner wall of the integrated refrigeration cylinder is fixedly provided with a mounting cylinder, one end of the mounting cylinder is provided with an air inlet, the other end of the mounting cylinder is provided with a mounting hole for installing a welding gun, the air inlet is aligned with the welding position of the outer wall of the metal ring jig, the air inlet is fixedly provided with a double-blowing pipe, and one end of the double-blowing pipe is connected to the interior of the integrated refrigeration cylinder, the other end of the double-blowing pipe is provided with an air outlet for cooling the completed welding part, the integrated refrigeration cylinder is fixedly provided with a mounting bracket, the mounting bracket is installed with a motor body, the output end of the motor body is connected to a rotating shaft, one end of the rotating shaft is fixedly provided with a first pulley, the inner wall of the double-blowing pipe is rotatably connected with a fan shaft, the fan shaft is fixedly provided with a fan body, and the motor body drives the fan shaft to rotate by driving the rotation of the first pulley; The cooling element is provided on the mounting cylinder, and the cooling element includes a gear fan fixed on the first pulley, and a circular rack is slidably provided on the mounting frame, and two groups of inner racks meshing with the gear fan are fixedly provided on the inner wall of the circular rack, and an outer rack is fixedly provided on the outer wall of the circular rack, and a guide ring is rotatably provided on the inner wall of the integrated refrigeration cylinder, and a fan-shaped gear ring meshing with the outer rack is fixedly provided on the guide ring, and the inner wall of the integrated refrigeration cylinder is fixedly provided with two limiting rings, and the two limiting rings are respectively located at both ends of the integrated refrigeration cylinder, and a pair of first cooling plates and a pair of second cooling plates are respectively slidably provided between the two limiting rings, and a first guide rod and a second guide rod are respectively fixed on both sides of each of the first cooling plates, and a first guide rod is respectively fixed on both sides of each of the second cooling plates The cam is connected to the guide post by a toothed connection, and the cam is connected to the guide post by a toothed connection, and the cam is connected to the guide post by a toothed connection.

2. The portable bracket for metal jig welding according to claim 1, characterized in that: The mounting frame is provided with a reciprocating slide groove which matches the circular rack.

3. The portable stand for metal jig welding according to claim 1, characterized in that: There are four straight slide grooves and four arc-shaped slide grooves, and the four straight slide grooves are distributed in a circular array on the outer circumference of each limiting ring, and the four arc-shaped slide grooves are distributed in a circular array on each limiting ring.

4. The portable stand for metal jig welding according to claim 1, characterized in that: A second belt ring is fixedly connected to the arc-shaped outer wall of the fan shaft, a belt body is sleeved between the first pulley and the second belt ring, a fan body is fixedly provided on the arc-shaped outer wall of the fan shaft on one side of the second belt ring, and a filter element body is provided at one end of the re-blowing pipe.

5. The portable stand for metal jig welding according to claim 4, characterized in that: The arc-shaped outer wall of the re-blowing pipe is provided with two movable holes matching the belt body. The arc-shaped outer wall of the fan shaft is sleeved with two limiting sleeves, and both limiting sleeves are fixedly connected to the inner wall of the re-blowing pipe.

6. The portable stand for metal jig welding according to claim 1, characterized in that: A pair of cooling tubes is provided on the first cooling plate, and another pair of cooling tubes is provided on the second cooling plate.

7. The portable stand for metal jig welding according to claim 1, characterized in that: The mounting frame is provided with a rotation hole matching the rotating shaft, and the motor body and the mounting frame are fixedly connected by bolts.

8. The portable stand for metal jig welding according to claim 1, characterized in that: Two receiving seats are fixedly provided on the top of the portable bracket body, and the two receiving seats are in contact with the arc-shaped outer wall of the metal ring fixture.

9. The portable stand for metal jig welding according to claim 1, characterized in that: The output end of the motor body is connected to a rotating shaft through a coupling.

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