A temperature-uniform cover structure for a vacuum brazing furnace

Abstract

The present invention relates to the field of brazing, and in particular to a temperature-averaging hood structure for a vacuum brazing furnace, comprising an outer hood body; the right end of the outer hood body is an opening, and a first brake mechanism is arranged on the inner wall of the left end of the outer hood body. The present invention slides along the guide wheel through a pull rope, which pulls the slider to the left, the rack will mesh with the third gear ring, and the rotating column will drive the rotating body to rotate, and the workpiece to be brazed is placed in the storage mechanism, which can facilitate the rotation of the workpiece to be brazed, so that the workpiece to be brazed is heated more evenly. After the heating is completed, the first brake mechanism is turned on to drive the movable cylinder to rotate, and the rotation of the movable cylinder will cause the rotating body to tilt at a certain angle. The holding fixed column can facilitate the placement box to be taken out, which solves the problem that the existing temperature-averaging hood structure often cannot provide uniform heat distribution. After the welding is completed, the temperature-averaging hood structure is not convenient for the workpiece to be brazed to be quickly taken out from the temperature-averaging hood.

Description

Technical Field

[0001] The invention belongs to the field of brazing, and in particular relates to a temperature-averaging hood structure for a vacuum brazing furnace. Background Art

[0002] In recent years, vacuum brazing technology has been widely used in electronics, machinery, aerospace and other fields to achieve close connection between materials. Vacuum brazing furnaces have been widely used because they can eliminate oxidation and pollution during the welding process and ensure welding quality. Among them, the temperature hood, as one of the key components of the vacuum brazing furnace, plays an important role in achieving uniform heat distribution and ensuring welding quality.

[0003] At present, the existing temperature-averaging hood structure mainly includes a heat conduction plate and a heating element, and heat is transferred to the workpiece through the heat conduction plate. However, the existing temperature-averaging hood structure often cannot provide uniform heat distribution. After welding is completed, the temperature-averaging hood structure is not convenient for quickly removing the brazed workpiece from the temperature-averaging hood, and further improvement is needed.

[0004] Therefore, a temperature-averaging hood structure for a vacuum brazing furnace is proposed, wherein the temperature-averaging hood structure can provide uniform heat distribution, and after the welding is completed, the temperature-averaging hood structure facilitates the rapid removal of the brazed workpiece from the temperature-averaging hood. Summary of the invention

[0005] In order to overcome the problem that the existing temperature hood structure often cannot provide uniform heat distribution and it is inconvenient to quickly remove the brazed workpiece from the temperature hood after welding is completed, a temperature hood structure for a vacuum brazing furnace is proposed.

[0006] The technical solution of the present invention is: a temperature-averaging cover structure for a vacuum brazing furnace, comprising an outer cover body; the right end of the outer cover body is an opening, the inner wall of the left end of the outer cover body is provided with a first braking mechanism, a threaded column is rotatably installed through the center of the left end of the outer cover body, a second toothed ring is fixedly connected to the outer wall of the left end of the threaded column, the right end of the second toothed ring is fitted with the left end of the outer cover body, a fixed cover is fixedly connected to the left end of the outer cover body, a second braking mechanism for braking the second toothed ring is provided inside the fixed cover, a threaded cylinder is threadedly installed on the side wall of the threaded column, and the lower end of the threaded cylinder An L-shaped block is fixedly connected, a U-shaped block is fixedly connected to the inner wall of the left end of the outer cover body, the L-shaped block is slidably arranged on the inner wall of the U-shaped block, the inner wall of the outer cover body is fixedly connected with uniformly distributed second fixed blocks, one end of the second fixed block close to the center of the outer cover body is fixedly connected with a first fixed ring, the inner walls of the two first fixed rings are jointly slidably provided with a movable cylinder, the inner wall of the movable cylinder is fixedly connected with a second fixed ring and a third fixed ring, the third fixed ring and the second fixed ring are jointly fixedly connected with an intermediate frequency coil at one end close to each other, the inner wall of the third fixed ring is fixedly connected with a first heat conductive ring, and the right end of the first heat conductive ring is fixedly connected with a first heat conductive ring. The outer wall of the connecting column is fixedly connected with multiple second heat-conducting rings, the upper and lower ends of the bearing plate are rotatably installed with rotating columns, the side wall of the rotating column is fixedly connected with a third gear ring, the inner wall of the multiple second heat-conducting rings is fixedly connected with two supporting blocks, the upper ends of the two supporting blocks are fixedly connected with the bearing plate, the left end of the bearing plate is fixedly connected with two ear plates, a guide wheel is rotatably installed between the two ear plates, the lower end of the L-shaped block is fixedly connected with one end of a pull rope, the pull rope is slidably arranged on the outer wall of the guide wheel, a sliding block is slidably arranged at one end of the two supporting blocks close to each other, and the right end of the sliding block A rack is fixedly connected, and the rack and the third gear ring are meshed with each other. The other end of the pull rope passes through the guide wheel and is fixedly connected to the left end of the slider. One end of one of the support blocks close to the other support block is fixedly connected to two first fixed blocks, and the ends of the two first fixed blocks close to each other are fixedly connected to a guide column. The slider is sleeved on the outer wall of the guide column, and the ends of the two first fixed blocks close to each other are fixedly connected to springs, and the ends of the two springs close to each other are fixedly connected to the left and right ends of the slider. The upper end of the rotating column passes through the bearing plate and is fixedly connected to a rotating body, and a storage mechanism is provided at the upper end of the rotating body.

[0007] Preferably, when in use, turning on the second braking mechanism can drive the second gear ring to rotate, and the rotation of the second gear ring will drive the threaded column to rotate. The rotation of the threaded column will cause the threaded barrel to move to the right along the outer wall of the threaded barrel, and the threaded barrel will pull the pull rope through the L-shaped block, and the pull rope will slide along the guide wheel to pull the slider to the left, and the rack will mesh with the third gear ring, and the rotating column will drive the rotating body to rotate, and the workpiece to be brazed is placed in the storage mechanism, which can facilitate the rotation of the workpiece to be brazed, so that the workpiece to be brazed can be heated more evenly. When the heating is completed, turning on the first braking mechanism can drive the movable barrel to rotate, and the rotation of the movable barrel will cause the rotating body to tilt at a certain angle. The placement box can be easily taken out by holding the fixed column, which solves the problem that the existing temperature-averaging hood structure often cannot provide uniform heat distribution. After welding is completed, the temperature-averaging hood structure is not convenient for the workpiece to be brazed to be quickly taken out of the temperature-averaging hood.

[0008] Preferably, the first braking mechanism includes a fixed plate, a first motor, a first gear and a first gear ring; the fixed plate is fixedly connected to the inner wall of the left end of the outer cover, the first motor is fixedly connected to the right end of the fixed plate, the first gear is fixedly connected to the right end of the output shaft of the first motor, and the first gear ring is fixedly connected to the outer wall of the left end of the movable cylinder, and the first gear ring and the first gear are matched.

[0009] Preferably, the second braking mechanism includes a second motor and a second gear; the second motor is fixedly connected to the right end of the fixed cover, the second gear is fixedly connected to the right end of the output shaft of the second motor, and the second gear and the second gear ring are meshed with each other.

[0010] Preferably, two limiting members are fixed to the side wall of the movable cylinder, each limiting member includes two limiting rings, the limiting rings are fixed to the side wall of the movable cylinder, and the ends of the two limiting rings in each limiting member that are close to each other are respectively fitted with the left and right ends of the first fixed ring.

[0011] Preferably, the storage mechanism includes an arc block, a limit block, a carrying plate, a placement box and a fixed column; two arc blocks are fixedly connected to the upper end of the rotating body, a carrying plate is fixedly connected to the upper end of the rotating body, a placement box is slidably provided on the inner wall of the carrying plate, the upper end of the placement box is an opening, and the upper end of the placement box is fixedly connected to evenly distributed fixed columns.

[0012] Preferably, one end of the two arc-shaped blocks close to each other is fixedly connected to a limiting block, and one end of the two limiting blocks close to each other is respectively in contact with the side wall of the placement box.

[0013] Preferably, a collection box is fixedly connected to the upper ends of the inner walls of the plurality of second heat-conducting rings, the collection box is close to the right edge of the rightmost second heat-conducting ring, and the collection box corresponds to the placement box.

[0014] Preferably, the outer wall of the right end of the threaded column is fixedly connected with evenly distributed resistance heating blocks, and the end of the resistance heating block away from the threaded column is fixedly connected with a heat-conducting tube.

[0015] Preferably, there is a gap between the two second heat-conducting rings, the intermediate frequency coil is located outside the second heat-conducting rings, and there is a gap between the intermediate frequency coil and the second heat-conducting rings.

[0016] Preferably, one end of an exhaust pipe is fixedly connected to the lower left end of the outer cover body, and the other end of the exhaust pipe passes through the lower end of the fixed cover and extends to the bottom of the fixed cover.

[0017] The beneficial effects of the present invention are as follows: by turning on the second braking mechanism to drive the second gear ring to rotate, the rotation of the second gear ring will drive the threaded column to rotate, and the rotation of the threaded column will cause the threaded barrel to move to the right along the outer wall of the threaded barrel, and the threaded barrel will pull the pull rope through the L-shaped block, and the pull rope will slide along the guide wheel to pull the slider to the left, and the rack will mesh with the third gear ring, and the rotating column will drive the rotating body to rotate, and the workpiece to be brazed can be placed in the storage mechanism, which can facilitate the rotation of the workpiece to be brazed, so that the workpiece to be brazed can be heated more evenly. When the heating is completed, turning on the first braking mechanism can drive the movable barrel to rotate, and the rotation of the movable barrel will cause the rotating body to tilt at a certain angle. The placement box can be easily taken out by holding the fixed column, which solves the problem that the existing temperature-averaging hood structure often cannot provide uniform heat distribution. After welding is completed, the temperature-averaging hood structure is not convenient for the workpiece to be brazed to be quickly taken out of the temperature-averaging hood. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 What is shown is a three-dimensional structural schematic diagram of a temperature-averaging cover structure for a vacuum brazing furnace of the present invention;

[0019] Figure 2 What is shown is a three-dimensional cross-sectional structural schematic diagram of a temperature-averaging cover structure for a vacuum brazing furnace of the present invention;

[0020] Figure 3 The schematic diagram of the cross-sectional three-dimensional structure of a movable cylinder of a temperature-averaging cover structure for a vacuum brazing furnace of the present invention is shown;

[0021] Figure 4 The three-dimensional structure schematic diagram of a threaded barrel of a temperature-averaging cover structure for a vacuum brazing furnace of the present invention is shown;

[0022] Figure 5 The three-dimensional structure schematic diagram of the pull rope of the temperature-averaging cover structure for a vacuum brazing furnace of the present invention is shown;

[0023] Figure 6 The three-dimensional structure schematic diagram of a slider of a temperature-averaging cover structure for a vacuum brazing furnace of the present invention is shown;

[0024] Figure 7 Shown is a three-dimensional structural schematic diagram of a placement box of a temperature-averaging cover structure for a vacuum brazing furnace of the present invention;

[0025] Figure 8 The three-dimensional structure schematic diagram of the first braking mechanism of the temperature-averaging cover structure for a vacuum brazing furnace of the present invention is shown;

[0026] Fig. 9 Shown is a three-dimensional structural schematic diagram of a collection box with a temperature-equalizing hood structure for a vacuum brazing furnace of the present invention.

[0027] The marks in the attached drawings are: 1, outer cover; 101, fixed plate; 102, first motor; 103, first gear; 104, first gear ring; 2, fixed cover; 201, second motor; 202, second gear; 3, exhaust pipe; 4, threaded column; 5, resistance heating block; 6, heat-conducting cylinder; 7, second gear ring; 8, threaded cylinder; 9, L-shaped block; 10, U-shaped block; 11, support block; 12, bearing plate; 13, ear plate; 14, guide wheel; 15, pull rope; 16, rotating column; 17, third Gear ring; 18. first fixed block; 19. guide column; 20. slider; 21. spring; 22. rack; 23. rotating body; 24. arc block; 25. limit block; 26. carrier plate; 27. placement box; 28. fixed column; 29. ​​second fixed block; 30. first fixed ring; 31. movable cylinder; 32. limit ring; 33. second fixed ring; 34. third fixed ring; 35. intermediate frequency coil; 36. first thermal conductive ring; 37. connecting column; 38. collecting box; 39. second thermal conductive ring. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0029] Example 1: Please refer to Figure 1-Figure 9A temperature-averaging cover structure for a vacuum brazing furnace comprises an outer cover body 1; the right end of the outer cover body 1 is an opening, a first braking mechanism is arranged on the inner wall of the left end of the outer cover body 1, a threaded column 4 is rotatably installed through the center of the left end of the outer cover body 1, a second gear ring 7 is fixedly connected to the outer wall of the left end of the threaded column 4, the right end of the second gear ring 7 is fitted with the left end of the outer cover body 1, a fixed cover 2 is fixedly connected to the left end of the outer cover body 1, a second braking mechanism for braking the second gear ring 7 is arranged inside the fixed cover 2, a threaded cylinder 8 is threadedly installed on the side wall of the threaded column 4, an L-shaped block 9 is fixedly connected to the lower end of the threaded cylinder 8, and a U-shaped block 10 is fixedly connected to the inner wall of the left end of the outer cover body 1, The L-shaped block 9 is slidably arranged on the inner wall of the U-shaped block 10, and the inner wall of the outer cover body 1 is fixedly connected with uniformly distributed second fixed blocks 29, and the end of the second fixed block 29 close to the center of the outer cover body 1 is fixedly connected with a first fixed ring 30, and the inner walls of the two first fixed rings 30 are jointly slidably provided with a movable cylinder 31, and the inner wall of the movable cylinder 31 is fixedly connected with a second fixed ring 33 and a third fixed ring 34, and the third fixed ring 34 and the second fixed ring 33 are jointly fixedly connected with an intermediate frequency coil 35 at one end close to each other, and the inner wall of the third fixed ring 34 is fixedly connected with a first heat-conducting ring 36, and the right end of the first heat-conducting ring 36 is fixedly connected with uniformly distributed connecting columns 37, and the outer wall of the connecting columns 37 A plurality of second heat-conducting rings 39 are fixedly connected, and a rotating column 16 is rotatably installed through the upper and lower ends of the bearing plate 12, and a third gear ring 17 is fixedly connected to the side wall of the rotating column 16. Two support blocks 11 are fixedly connected to the inner wall of the plurality of second heat-conducting rings 39, and the upper ends of the two support blocks 11 are fixedly connected to the bearing plate 12, and the left end of the bearing plate 12 is fixedly connected to two ear plates 13, and a guide wheel 14 is rotatably installed between the two ear plates 13. The lower end of the L-shaped block 9 is fixedly connected to one end of a pull rope 15, and the pull rope 15 is slidably arranged on the outer wall of the guide wheel 14. A slider 20 is slidably arranged at one end of the two support blocks 11 close to each other, and a rack 22 is fixedly connected to the right end of the slider 20. 22 and the third gear ring 17 are meshed with each other, the other end of the pull rope 15 passes through the guide wheel 14 and is fixed to the left end of the slider 20, one end of one support block 11 close to the other support block 11 is fixedly connected to two first fixed blocks 18, and the ends of the two first fixed blocks 18 close to each other are fixedly connected to the guide column 19, the slider 20 is sleeved on the outer wall of the guide column 19, the ends of the two first fixed blocks 18 close to each other are fixedly connected to springs 21, and the ends of the two springs 21 close to each other are fixedly connected to the left and right ends of the slider 20, the upper end of the rotating column 16 passes through the bearing plate 12 and is fixedly connected to a rotating body 23, and the upper end of the rotating body 23 is provided with a storage mechanism.

[0030] When in use, turning on the second braking mechanism can drive the second gear ring 7 to rotate, and the rotation of the second gear ring 7 will drive the threaded column 4 to rotate. The rotation of the threaded column 4 will cause the threaded tube 8 to move to the right along the outer wall of the threaded column 4, and the threaded tube 8 will pull the pull rope 15 through the L-shaped block 9. The pull rope 15 slides along the guide wheel 14 and will pull the slider 20 to the left. The rack 22 will mesh with the third gear ring 17, and the rotating column 16 will drive the rotating body 23 to rotate, and the workpiece to be brazed is placed in the storage mechanism, which can facilitate the rotation of the workpiece to be brazed, so that the workpiece to be brazed can be heated more evenly. When the heating is completed, turning on the first braking mechanism can drive the movable cylinder 31 to rotate. The rotation of the movable cylinder 31 will cause the rotating body 23 to tilt at a certain angle, and the holding fixed column 28 can facilitate the removal of the placement box 27.

[0031] See also Figure 1 and Figure 8 In the present embodiment, the first braking mechanism comprises a fixed plate 101, a first motor 102, a first gear 103 and a first gear ring 104; the fixed plate 101 is fixedly connected to the inner wall at the left end of the outer cover body 1, the first motor 102 is fixedly connected to the right end of the fixed plate 101, the first gear 103 is fixedly connected to the right end of the output shaft of the first motor 102, the first gear ring 104 is fixedly connected to the outer wall at the left end of the movable cylinder 31, the first gear ring 104 and the first gear 103 are adapted to each other, when the movable cylinder 31 needs to be rotated, the first motor 102 is turned on to rotate the first gear 103, the first gear 103 and the first gear ring 104 are meshed with each other, which will drive the first gear ring 104 to rotate, thereby driving the movable cylinder 31 to rotate.

[0032] See also Figure 1 and Figure 2 In this embodiment, the second braking mechanism includes a second motor 201 and a second gear 202; the right end of the fixed cover 2 is fixedly connected to the second motor 201, and the right end of the output shaft of the second motor 201 is fixedly connected to the second gear 202, and the second gear 202 and the second gear ring 7 are meshed with each other. When the second gear ring 7 needs to be rotated, the second motor 201 is turned on to rotate the second gear 202, and the second gear 202 is meshed with the second gear ring 7, which can facilitate the rotation of the second gear ring 7.

[0033] See also Figure 1 and Figure 3 In this embodiment, two limiting members are fixedly connected to the side wall of the movable cylinder 31, and each limiting member includes two limiting rings 32. The limiting rings 32 are fixedly connected to the side wall of the movable cylinder 31. The ends of the two limiting rings 32 in each limiting member that are close to each other are respectively fitted with the left and right ends of the first fixed ring 30, which is beneficial to the stable rotation of the movable cylinder 31.

[0034] See also Figure 1 and Figure 7In this embodiment, the storage mechanism includes an arc block 24, a limit block 25, a carrier plate 26, a placement box 27 and a fixed column 28; two arc blocks 24 are fixedly connected to the upper end of the rotating body 23, a carrier plate 26 is fixedly connected to the upper end of the rotating body 23, a placement box 27 is slidably provided on the inner wall of the carrier plate 26, the upper end of the placement box 27 is open, and the upper end of the placement box 27 is fixedly connected to the evenly distributed fixed columns 28, and the workpiece to be brazed is placed inside the placement box 27, which can facilitate the brazing of the workpiece to be brazed.

[0035] See also Figure 1 and Figure 7 In this embodiment, one end of the two arc blocks 24 close to each other is fixedly connected to the limiting block 25, and one end of the two limiting blocks 25 close to each other is respectively in contact with the side walls of the placement box 27. The placement box 27 can be limited by the two limiting blocks 25, which is conducive to the rapid and stable placement of the placement box 27 on the inner wall of the supporting plate 26.

[0036] See also Figure 1 and Figure 3 In this embodiment, there is a gap between the two second heat-conducting rings 39, the intermediate frequency coil 35 is located outside the second heat-conducting ring 39, and there is a gap between the intermediate frequency coil 35 and the second heat-conducting ring 39. The heat generated by the intermediate frequency heating will be transferred to the inside of the outer cover 1 through the gap.

[0037] Example 2: Please refer to Figure 1 , Figure 7 and Fig. 9 On the basis of Example 1, the present application provides a technical solution: a collection box 38 is fixedly connected to the upper end of the inner wall of the plurality of second heat-conducting rings 39, and the collection box 38 is close to the right edge of the rightmost second heat-conducting ring 39. The collection box 38 corresponds to the placement box 27. By setting the collection box 38, when it is necessary to statically heat the workpiece to be brazed, the movable cylinder 31 is rotated one hundred and eighty degrees so that the opening of the collection box 38 faces upward, which can facilitate the placement of the workpiece to be brazed.

[0038] Example 3: Please refer to Figure 2 On the basis of Example 1, the present application provides a technical solution: a uniformly distributed resistance heating block 5 is fixedly connected to the outer wall of the right end of the threaded column 4, and a heat-conducting tube 6 is fixedly connected to the end of the resistance heating block 5 away from the threaded column 4. When the resistance heating block 5 is turned on, the middle part of the outer cover body 1 can be heated, and the heat will also be transferred to the heat-conducting tube 6, which can improve the heating effect of the middle part of the outer cover body 1.

[0039] Example 4: Please refer to Figure 1-Figure 3On the basis of Example 1, the present application provides a technical solution: one end of an exhaust pipe 3 is fixedly connected to the lower left end of the outer cover body 1, and the other end of the exhaust pipe 3 passes through the lower end of the fixed cover 2 and extends to the bottom of the fixed cover 2. The other end of the exhaust pipe 3 is connected to an external vacuum pump, which can facilitate the rapid exhaust of the air in the outer cover body 1.

[0040] Working principle: First, place the workpiece to be brazed inside the placement box 27, and place the placement box 27 on the inner wall of the carrier plate 26;

[0041] When the second gear ring 7 needs to be rotated, the second motor 201 is turned on to rotate the second gear 202, and the second gear 202 is meshed with the second gear ring 7, so that the second gear ring 7 is rotated. The rotation of the second gear ring 7 drives the threaded column 4 to rotate, and the rotation of the threaded column 4 causes the threaded barrel 8 to move rightward along the outer wall of the threaded column 4, and the threaded barrel 8 pulls the pull rope 15 through the L-shaped block 9, and the pull rope 15 slides along the guide wheel 14, which pulls the slider 20 to the left, and the rack 22 is meshed with the third gear ring 17, and the rotating column 16 drives the rotating body 23 to rotate, and the workpiece to be brazed in the storage mechanism rotates;

[0042] When the output shaft of the second motor 201 rotates in the reverse direction, the spring 21 will be reset, and the slider 20 will move to the right, which will drive the third gear ring 17 to rotate in the reverse direction, thereby realizing the reverse rotation of the storage mechanism;

[0043] Turning on the intermediate frequency coil 35 can heat the inner part of the outer cover 1 with intermediate frequency, turning on the resistance heating block 5 can heat the center of the outer cover 1, and the heat will also be transferred to the heat-conducting tube 6, which can improve the heating effect of the middle part of the outer cover 1. Connecting the exhaust pipe 3 to an external vacuum pump can quickly evacuate the air in the outer cover 1, thereby quickly improving the heating inside the outer cover 1;

[0044] After heating is completed, the first motor 102 is turned on to rotate the first gear 103. The first gear 103 and the first gear ring 104 are meshed with each other, which drives the first gear ring 104 to rotate, thereby driving the movable cylinder 31 to rotate. The rotation of the movable cylinder 31 causes the rotating body 23 to tilt at a certain angle. The holding of the fixed column 28 can facilitate the placement box 27 to be taken out.

[0045] By providing the collecting box 38, when the workpieces to be brazed need to be statically heated, the movable cylinder 31 is rotated 180 degrees so that the opening of the collecting box 38 faces upward, which can facilitate the placement of the workpieces to be brazed.

[0046] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the spirit of the present invention.

Claims

1. A temperature-averaging cover structure for a vacuum brazing furnace, comprising an outer cover body (1); characterized in that: The right end of the outer cover body (1) is open, the inner wall of the left end of the outer cover body (1) is provided with a first braking mechanism, a threaded column (4) is rotatably installed through the center of the left end of the outer cover body (1), a second toothed ring (7) is fixedly connected to the outer wall of the left end of the threaded column (4), the right end of the second toothed ring (7) is fitted with the left end of the outer cover body (1), a fixed cover (2) is fixedly connected to the left end of the outer cover body (1), a second braking mechanism for braking the second toothed ring (7) is provided inside the fixed cover (2), a threaded cylinder (8) is threadedly installed on the side wall of the threaded column (4), an L-shaped block (9) is fixedly connected to the lower end of the threaded cylinder (8), a U-shaped block (10) is fixedly connected to the inner wall of the left end of the outer cover body (1), and the L-shaped block (9) is slidably arranged on the inner wall of the U-shaped block (10) The inner wall of the outer cover (1) is fixedly connected with uniformly distributed second fixing blocks (29); one end of the second fixing block (29) close to the center of the outer cover (1) is fixedly connected with a first fixing ring (30); the inner walls of the two first fixing rings (30) are slidably provided with a movable cylinder (31); the inner wall of the movable cylinder (31) is fixedly connected with a second fixing ring (33) and a third fixing ring (34); one end of the third fixing ring (34) and the second fixing ring (33) close to each other is fixedly connected with an intermediate frequency coil (35); the inner wall of the third fixing ring (34) is fixedly connected with a first heat conducting ring (36); the right end of the first heat conducting ring (36) is fixedly connected with uniformly distributed connecting columns (37); the outer wall of the connecting column (37) is fixedly connected with a plurality of second heat conducting rings (39) The upper and lower ends of the bearing plate (12) are rotatably installed with a rotating column (16), the side wall of the rotating column (16) is fixedly connected to a third gear ring (17), the inner wall of the plurality of second heat-conducting rings (39) is fixedly connected to two support blocks (11), the upper ends of the two support blocks (11) are fixedly connected to the bearing plate (12), the left end of the bearing plate (12) is fixedly connected to two ear plates (13), a guide wheel (14) is rotatably installed between the two ear plates (13), the lower end of the L-shaped block (9) is fixedly connected to one end of a pull rope (15), the pull rope (15) is slidably arranged on the outer wall of the guide wheel (14), the ends of the two support blocks (11) close to each other are slidably provided with a slider (20), the right end of the slider (20) is fixedly connected to a rack (22), the rack (22) and the first gear ring (17) are fixedly connected to the inner wall of the plurality of second heat-conducting rings (39), and the second heat-conducting rings (39) are fixedly connected to the inner wall of the plurality of second heat-conducting rings (39). The three tooth rings (17) are meshed with each other. The other end of the pull rope (15) passes through the guide wheel (14) and is fixed to the left end of the slider (20). One end of one of the support blocks (11) close to the other support block (11) is fixed to two first fixed blocks (18). The ends of the two first fixed blocks (18) close to each other are fixed to a guide column (19). The slider (20) is sleeved on the outer wall of the guide column (19). The ends of the two first fixed blocks (18) close to each other are fixed to springs (21). The ends of the two springs (21) close to each other are fixed to the left and right ends of the slider (20). The upper end of the rotating column (16) passes through the bearing plate (12) and is fixed to a rotating body (23). The upper end of the rotating body (23) is provided with a storage mechanism.

2. The temperature-isolating cover structure for a vacuum brazing furnace according to claim 1, characterized in that: The first braking mechanism comprises a fixed plate (101), a first motor (102), a first gear (103) and a first gear ring (104); the fixed plate (101) is fixedly connected to the inner wall at the left end of the outer cover (1), the first motor (102) is fixedly connected to the right end of the fixed plate (101), the first gear (103) is fixedly connected to the right end of the output shaft of the first motor (102), the first gear ring (104) is fixedly connected to the outer wall at the left end of the movable cylinder (31), and the first gear ring (104) and the first gear (103) are matched.

3. The temperature-isolating cover structure for a vacuum brazing furnace according to claim 1, characterized in that: The second braking mechanism comprises a second motor (201) and a second gear (202); the second motor (201) is fixedly connected to the right end of the fixed cover (2), the second gear (202) is fixedly connected to the right end of the output shaft of the second motor (201), and the second gear (202) and the second gear ring (7) are meshed with each other.

4. The temperature-isolating cover structure for a vacuum brazing furnace according to claim 1, characterized in that: Two limiting members are fixedly connected to the side wall of the movable cylinder (31), each limiting member comprising two limiting rings (32), the limiting rings (32) being fixedly connected to the side wall of the movable cylinder (31), and the ends of the two limiting rings (32) in each limiting member that are close to each other are respectively fitted with the left and right ends of the first fixed ring (30).

5. The temperature-isolating cover structure for a vacuum brazing furnace according to claim 1, characterized in that: The storage mechanism comprises an arc block (24), a limit block (25), a carrying plate (26), a placement box (27) and a fixed column (28); the upper end of the rotating body (23) is fixedly connected to two arc blocks (24), the upper end of the rotating body (23) is fixedly connected to the carrying plate (26), the inner wall of the carrying plate (26) is slidably provided with a placement box (27), the upper end of the placement box (27) is open, and the upper end of the placement box (27) is fixedly connected to evenly distributed fixed columns (28).

6. The temperature-isolating cover structure for a vacuum brazing furnace according to claim 5, characterized in that: One end of the two arc-shaped blocks (24) close to each other is fixedly connected to the limiting block (25), and one end of the two limiting blocks (25) close to each other is respectively in contact with the side wall of the placement box (27).

7. The temperature-isolating cover structure for a vacuum brazing furnace according to claim 1, characterized in that: A collection box (38) is fixedly connected to the upper ends of the inner walls of the plurality of second heat-conducting rings (39). The collection box (38) is close to the right edge of the rightmost second heat-conducting ring (39). The collection box (38) corresponds to the placement box (27).

8. The temperature-isolating cover structure for a vacuum brazing furnace according to claim 1, characterized in that: The outer wall of the right end of the threaded column (4) is fixedly connected to evenly distributed resistance heating blocks (5), and one end of the resistance heating block (5) away from the threaded column (4) is fixedly connected to a heat conducting tube (6).

9. The temperature-isolating cover structure for a vacuum brazing furnace according to claim 1, characterized in that: There is a gap between the two second heat-conducting rings (39), the intermediate frequency coil (35) is located outside the second heat-conducting ring (39), and there is a gap between the intermediate frequency coil (35) and the second heat-conducting ring (39).

10. The temperature-isolating cover structure for a vacuum brazing furnace according to claim 1, characterized in that: One end of an exhaust pipe (3) is fixedly connected to the lower left end of the outer cover body (1), and the other end of the exhaust pipe (3) passes through the lower end of the fixed cover (2) and extends to the bottom of the fixed cover (2).

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