Universal vacuum welding furnace mechanism

Abstract

The invention provides a generic vacuum welding furnace mechanism, and belongs to the technical field of vacuum welding furnaces, the generic vacuum welding furnace mechanism comprises a bottom plate, a shell is mounted on the bottom plate, a supporting shell is fixedly arranged on the shell, an air exhaust pipeline is mounted on the supporting shell, a sealing cover is hinged to the supporting shell, and a sealing assembly is mounted between the sealing cover and the supporting shell; a connecting frame and a baffle are installed on the shell, a switching assembly is installed on the sealing cover, a first conductive plate and a second conductive plate are installed on the shell, an electric heating pipe is arranged in the shell, an opening is formed in the sealing cover, an adjusting block is installed in the opening in a sliding mode, and a sealing plate is installed on the adjusting block. A connecting rod is fixedly connected to the adjusting block, a driving assembly is installed on the connecting rod, a screw rod is installed on the driving assembly, and a second movable block is installed on the sealing cover in a sliding mode. The problem that an existing vacuum welding furnace cannot adjust the front-back position and the left-right position of welding under the condition that sealing is kept is solved.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum welding furnaces, in particular to a pan-type vacuum welding furnace mechanism. Background Art

[0002] A Pan-style vacuum welding furnace is a device that performs welding in a high-vacuum environment and is widely used in high-precision, high-performance manufacturing fields such as aerospace, semiconductors, and precision instruments. While vacuum welding technology offers many advantages over traditional welding methods, such as reduced oxidation, improved weld quality, and the avoidance of contamination and gas interference during the welding process, existing Pan-style vacuum welding furnaces do have some shortcomings.

[0003] For example, the invention patent with publication number CN118123160A discloses a vacuum welding furnace, comprising a chamber having an upper chamber section and a lower chamber section, the upper chamber section having a first heating assembly, the lower chamber section comprising a first shell having a first opening, a first space within the first shell section, a cooling assembly within the first space, and a workpiece disposed on the cooling assembly; an isolation mechanism is further provided, the isolation mechanism being movably connected to the first shell section and having a first state and a second state, and further comprising a first drive assembly for driving the isolation mechanism to switch between the first state and the second state; the first drive assembly can drive the isolation mechanism to switch to the second state when the cooling assembly cools the workpiece, isolating the first heating assembly so that the cooling assembly does not affect the temperature of the first heating assembly when cooling the workpiece, thereby reducing the heating time and heating cost of the workpiece after welding. Although the above device can reduce the heating time and cost, when in use, the front-back position and left-right position of the welding cannot be adjusted while maintaining a seal, and the guide structure cannot be used to achieve left-right swing of the welding head during welding, which affects the welding quality of the device. Summary of the Invention

[0004] In view of the problems existing in the existing vacuum welding furnace, the present invention is proposed.

[0005] In order to solve the above technical problems, the present application provides the following technical scheme: the pan type vacuum welding furnace mechanism, including the bottom plate, the bottom plate is installed with the shell, the shell is fixedly provided with the support shell, the support shell is installed with the air exhaust pipeline, the support shell is hinged with the sealing cover, the sealing cover and the support shell are installed with the sealing assembly, the shell is installed with the connecting frame and the baffle, the sealing cover is installed with the switching assembly, the shell is installed with the first conductive plate and the second conductive plate, the shell is provided with the electric heating pipe, the sealing cover is provided with the opening, the opening is slidably installed with the adjusting block, the adjusting block is installed with the sealing plate, the adjusting block is fixedly connected with the connecting rod, the connecting rod is installed with the driving assembly, the driving assembly is installed with the screw rod, the sealing cover is slidably installed with the second movable block, the second movable block is slidably installed with the sliding block, the bottom of the sliding block is slidably installed with the first movable block, the screw rod and the first movable block are threadedly connected, the adjusting block and the second movable block are provided with the sliding frame, the sliding frame is provided with the guide assembly, the second movable block is fixedly provided with the guide rod, the guide rod penetrates into the first movable block, the sliding block is installed with the connecting barrel and the welding head.

[0006] As a preferred scheme of the present application, the sealing cover is provided with a through hole, a sliding rod is installed in the through hole, one end of the sliding rod is slidably connected with the sealing cover, and the other end of the sliding rod abuts against the sealing assembly.

[0007] As a preferred scheme of the present application, the sealing assembly comprises a first electric push rod fixedly connected to the bottom plate, a first spring fixedly provided on the first electric push rod, a first connecting plate fixedly connected to the support shell, a second connecting plate fixedly provided on the sealing cover, an active rod penetratingly provided in the first connecting plate and the second connecting plate, a third connecting plate provided at the bottom of the active rod, a connecting plate fixedly connected between two adjacent third connecting plates, a second spring fixedly connected between the third connecting plate and the first connecting plate, and the top of the first spring is connected with the third connecting plate.

[0008] As a preferred scheme of the present application, the top of the active rod is a hemispherical structure, the support shell forms a clamping structure with the sealing cover through the first connecting plate, the second connecting plate and the active rod, and the sliding rod abuts against the second connecting plate.

[0009] As a preferred scheme of the present application, the switching assembly comprises an active plate slidably installed on the sealing cover, the sealing cover is provided with a first installation groove and a second installation groove, an installation block is fittedly provided in the active plate and the second installation groove, and the shell is fixedly provided with a heat insulation block and a heat conduction block.

[0010] As a preferred scheme of the present application, the first conductive plate and the shell are in sliding connection, the second conductive plate and the shell are in fixed connection, the electric heating pipe and the heat-conducting block are in fixed connection, and the second conductive plate is connected with the electric heating pipe.

[0011] As a preferred scheme of the present application, the length of the opening is less than the length of the sealing plate, the outer wall of the sealing plate and the inner wall of the sealing cover are in close contact with each other, and the sealing plate is symmetrically distributed on both sides of the adjusting block.

[0012] As a preferred scheme of the present application, the driving assembly comprises a motor fixedly installed on the connecting rod, a first gear fixedly connected on the output shaft of the motor, a second gear in meshing connection with the first gear, and a screw rod in fixed connection with the second gear.

[0013] As a preferred scheme of the present application, the guiding assembly comprises a first support plate slidingly installed in the sliding frame, a second support plate fixedly connected on the first support plate, a stud rotatably installed on the first support plate, and a connecting shaft fixedly connected on the stud.

[0014] As a preferred scheme of the present application, the connecting shaft is provided with a transverse ridge, the bottom of the connecting shaft is abutted with a sliding plate, and the sliding frame is provided with a sliding groove for sliding of the sliding plate.

[0015] Compared with the prior art, the present application has the following advantages:

[0016] 1. The opening, the sealing plate and the adjusting block are arranged to realize the function of adjusting the welding position in the closed state. The sealing plate on the adjusting block moves in the opening while keeping the sealing cover closed as a whole by moving the adjusting block forward and backward, thereby adjusting the front and rear positions of welding in the closed state. The motor on the driving assembly drives the first gear to rotate, the second gear and the screw rod are driven to rotate by the first gear, thereby driving the welding head on the first movable block to move left and right under the guidance of the guide rod, and the whole device always keeps sealed, thereby solving the problem that the existing vacuum welding furnace cannot adjust the front and rear positions and the left and right positions of welding while keeping sealed, and the device has the advantage of stronger adaptability.

[0017] 2. The through hole, the sliding rod and the sealing assembly are arranged on the device. When the sealing cover is closed, the cavity between the supporting shell and the sealing cover is kept in a negative pressure state by the air extraction pipeline, the sliding rod moves inward under the negative pressure, thereby pressing the second connecting plate above the first connecting plate by the sliding rod, and the device can keep sealed and stable.

[0018] 3. The sliding block and the guiding assembly are arranged on the device. Figure 10It can be seen that since the second support plates on both sides of the sliding frame are staggered with each other, when the slider slides left and right, the outer wall of the connecting tube can abut against the second support plates at different positions one by one, thereby allowing the connecting tube to swing intermittently, so that the welding quality can be improved by using a small distance reciprocating swing during subsequent straight line welding, thereby enhancing the practicality of the device.

[0019] 4. The device is provided with a first movable block, a second movable block and a slider. By moving the slider in the slide groove, the slider can simultaneously drive the connecting shafts and studs in multiple positions to rotate, and then synchronously adjust the initial positions of multiple first support plates and second support plates, so as to adjust the amplitude of the reciprocating movement of the welding head during welding, thereby enhancing the adaptability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive efforts. Among them:

[0021] Figure 1 This is a schematic diagram of the overall structure of the pan-type vacuum welding furnace of the present invention;

[0022] Figure 2 yes Figure 1 A magnified schematic diagram of the structure at A in the middle;

[0023] Figure 3 yes Figure 1 A magnified schematic diagram of the structure at B in the middle;

[0024] Figure 4 This is a schematic diagram of the connection structure between the support shell and the first connecting plate of the present invention;

[0025] Figure 5 This is a schematic diagram of the split structure of the connection frame and the housing of the present invention;

[0026] Figure 6 yes Figure 5 A magnified schematic diagram of the structure at position C in the middle;

[0027] Figure 7 This is a schematic diagram of the connection structure between the sealing cover and the second movable block of the present invention;

[0028] Figure 8 yes Figure 7 A magnified schematic diagram of the structure at D in the middle;

[0029] Figure 9 This is a schematic diagram of the connection structure between the screw and the second gear of the present invention;

[0030] Figure 10 yes Figure 9 Enlarged schematic diagram of the structure at E in the middle.

[0031] Figure numerals: 1, bottom plate; 2, housing; 3, support shell; 4, sealing cover; 5, sealing assembly; 501, first electric push rod; 502, first spring; 503, first connecting plate; 504, second connecting plate; 505, movable rod; 506, second spring; 507, third connecting plate; 508, connecting plate; 6, sliding rod; 7, through hole; 8, connecting frame; 9, baffle; 10, switching assembly; 1001, movable plate; 1002, first mounting groove; 1003, second mounting groove; 1004, mounting block; 1005, heat insulation block; 1006, heat conduction block; 11, electric heating tube; 1 2. First conductive plate; 13. Second conductive plate; 14. Opening; 15. Sealing plate; 16. Adjusting block; 17. Connecting rod; 18. Driving assembly; 1801. Motor; 1802. First gear; 1803. Second gear; 19. Screw; 20. Guide rod; 21. First movable block; 22. Second movable block; 23. Slider; 24. Sliding frame; 25. Guide assembly; 2501. Slide groove; 2502. Slide plate; 2503. Connecting shaft; 2504. Stud; 2505. First support plate; 2506. Second support plate; 26. Connecting tube; 27. Welding head; 28. Exhaust pipe. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0033] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0034] Next, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, cross-sectional views of device structures may be partially enlarged and not to scale when describing the embodiments of the present invention. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0035] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0036] like Figures 1-10As shown, the pan-type vacuum welding furnace mechanism includes a base plate 1, a shell 2 is installed on the base plate 1, a support shell 3 is fixedly provided on the shell 2, an exhaust pipe 28 is installed on the support shell 3, and the exhaust pipe 28 is convenient for subsequently evacuating the device to a vacuum, a sealing cover 4 is hinged on the support shell 3, a sealing component 5 is installed between the sealing cover 4 and the support shell 3, a connecting frame 8 and a baffle 9 are installed on the shell 2, a switching component 10 is installed on the sealing cover 4, a first conductive plate 12 and a second conductive plate 13 are installed on the shell 2, an electric heating tube 11 is provided in the shell 2, the switching component 10 can trigger the first conductive plate 12 and the second conductive plate 13 to be energized, so that the electric heating tube 11 works, thereby heating the material to be welded in a vacuum environment, an opening 14 is provided on the sealing cover 4, an adjusting block 16 is slidably installed in the opening 14, a sealing plate 15 is installed on the adjusting block 16, a connecting rod 17 is fixedly connected to the adjusting block 16, and when the adjusting block 16 moves, the sealing plate 15 keeps the opening 14 closed. The sealing cover 4 is kept in a closed state, and a driving assembly 18 is installed on the connecting rod 17, and a screw 19 is installed on the driving assembly 18. A second movable block 22 is slidably installed on the sealing cover 4, and a slider 23 is slidably installed on the second movable block 22. The first movable block 21 is slidably installed on the bottom of the slider 23. The screw 19 and the first movable block 21 are threadedly connected, and a sliding frame 24 is provided between the adjusting block 16 and the second movable block 22. A guide assembly 25 is provided on the sliding frame 24, and a guide rod 20 is fixedly provided on the second movable block 22. The guide rod 20 passes through the first movable block 21, and a connecting tube 26 and a welding head 27 are installed on the slider 23. The screw 19 is driven to rotate by the driving assembly 18, so that the first movable block 21 slides under the limiting action of the guide rod 20, so that welding work can be performed while the device remains sealed. At the same time, during the movement of the welding head 27, the welding head 27 can be swung back and forth by adjusting the guide assembly 25 to improve the welding quality of the device.

[0037] In this embodiment, a through hole 7 is provided on the sealing cover 4, and a slide rod 6 is installed in the through hole 7. One end of the slide rod 6 is slidably connected to the sealing cover 4, and the other end of the slide rod 6 is in contact with the sealing component 5. When the device is evacuated to a vacuum, the slide rod 6 can always contact the sealing component 5, thereby utilizing the vacuum to achieve a secondary clamping function.

[0038] In the embodiment, the sealing assembly 5 comprises a first electric push rod 501 fixedly connected to the bottom plate 1, a first spring 502 fixedly arranged on the first electric push rod 501, a first connecting plate 503 fixedly connected to the supporting shell 3, a second connecting plate 504 fixedly arranged on the sealing cover 4, a movable rod 505 arranged in the first connecting plate 503 and the second connecting plate 504, a third connecting plate 507 arranged at the bottom of the movable rod 505, a connecting plate 508 fixedly connected between two adjacent third connecting plates 507, a second spring 506 fixedly connected between the third connecting plate 507 and the first connecting plate 503, and the top of the first spring 502 is connected with the third connecting plate 507. The device adjusts the initial height of the third connecting plate 507 by extending or shortening the first electric push rod 501. The connecting plate 508 synchronously adjusts the positions of the third connecting plate 507 and the movable rod 505. When the sealing cover 4 is closed on the device, the second connecting plate 504 abuts against the movable rod 505 first, so that the movable rod 505 moves downward until the movable rod 505 completely penetrates the first connecting plate 503 and the second connecting plate 504, so that the supporting shell 3 and the sealing cover 4 are kept closed.

[0039] In the embodiment, the top of the movable rod 505 is a hemispherical structure. The supporting shell 3 and the sealing cover 4 form a clamping structure through the first connecting plate 503, the second connecting plate 504 and the movable rod 505. The sliding rod 6 abuts against the second connecting plate 504. The clamping structure automatically keeps the clamping state after the sealing cover 4 is closed, so that the device is kept stable after being sealed.

[0040] In the embodiment, the switching assembly 10 comprises a movable plate 1001 slidably installed on the sealing cover 4. The sealing cover 4 is provided with a first installation groove 1002 and a second installation groove 1003. The movable plate 1001 and the second installation groove 1003 are provided with an installation block 1004. The heat insulation block 1005 and the heat conduction block 1006 are fixedly arranged in the shell 2. The top of the movable plate 1001 is slid to the position of the first installation groove 1002 or the second installation groove 1003. When the movable plate 1001 is located in the position of the second installation groove 1003, the movable plate 1001 is connected with the sealing cover 4 through the installation block 1004 and the second installation groove 1003. The movable plate 1001 triggers the heating function after the sealing cover 4 is closed. Figure 3

[0041] In the embodiment, the first conductive plate 12 is slidably connected with the shell 2, the second conductive plate 13 is fixedly connected with the shell 2, the electric heating tube 11 is fixedly connected with the heat conduction block 1006, and the second conductive plate 13 is connected with the electric heating tube 11. When the second conductive plate 13 contacts with the first conductive plate 12, the electric heating tube 11 works, so that the heating function is realized.

[0042] ​In the embodiment, the length of the opening 14 is less than the length of the sealing plate 15, the outer wall of the sealing plate 15 is in close contact with the inner wall of the sealing cover 4, the sealing effect of the device is ensured, the sealing plate 15 is symmetrically distributed on both sides of the adjusting block 16, and the sealing plate 15 can slide in the opening 14 when the adjusting block 16 moves, and the opening 14 is always kept sealed.

[0043] In the embodiment, the driving assembly 18 comprises a motor 1801 fixedly installed on the connecting rod 17, a first gear 1802 fixedly connected to the output shaft of the motor 1801, a second gear 1803 meshingly connected to the first gear 1802, and the second gear 1803 is fixedly connected to the screw rod 19. The first gear 1802 is driven to rotate by the motor 1801, so as to drive the second gear 1803 and the screw rod 19 to rotate. The first gear 1802 and the second gear 1803 are arranged to make the motor 1801 located on the outside of the device, so as to avoid the influence of high temperature on the normal work of the motor 1801.

[0044] In the embodiment, the guiding assembly 25 comprises a first supporting plate 2505 slidingly installed in the sliding frame 24, a second supporting plate 2506 fixedly connected to the first supporting plate 2505, a stud 2504 rotatably installed on the first supporting plate 2505, and a connecting shaft 2503 fixedly connected to the stud 2504. The stud 2504 is screwed into or out of the sliding frame 24 by rotating the connecting shaft 2503, so as to change the initial position of the first supporting plate 2505 and the second supporting plate 2506, so as to adjust the welding track in subsequent welding.

[0045] In the embodiment, the connecting shaft 2503 is provided with a transverse ridge, the bottom of the connecting shaft 2503 is abutted with a sliding plate 2502, and the sliding frame 24 is provided with a sliding groove 2501 for sliding of the sliding plate 2502. The sliding plate 2502 in the sliding groove 2501 is pulled, so that the connecting shafts 2503 at multiple positions are synchronously rotated, so as to realize the synchronous adjustment function, and the convenience of use of the device is enhanced.

[0046] It should be noted that the present application is a general vacuum welding furnace mechanism. First, as shown in Figures 1-6 , the bottom plate 1 and the outer shell 2 are used to support the whole device. The gas in the cavity formed by the supporting shell 3 and the sealing cover 4 is pumped out through the air pumping pipeline 28, so that welding is carried out in a vacuum environment, as shown in Figure 6 and Figure 3 , the top of the movable plate 1001 is slid to the position of the first mounting groove 1002 or the second mounting groove 1003, and when the movable plate 1001 is located Figure 3When the sealing cover 4 is in the middle position, the movable plate 1001 is docked with the sealing cover 4 through the mounting block 1004 and the second mounting groove 1003, and the first conductive plate 12 is connected to an external power supply. When the sealing cover 4 is closed, the movable plate 1001 can be abutted against the first conductive plate 12. Since the first conductive plate 12 and the outer shell 2 are in a sliding connection and the second conductive plate 13 and the outer shell 2 are in a fixed connection, the first conductive plate 12 will gradually approach the second conductive plate 13 during the closing process of the sealing cover 4. When the sealing cover 4 is completely closed, the second conductive plate 13 contacts the first conductive plate 12, so that the electric heating tube 11 on the heat-conducting block 1006 can be operated to realize the heating function. By extending or shortening the first electric push rod 501 to adjust the initial height of the third connecting plate 507, the connecting plate 508 allows the positions of the third connecting plates 507 and the movable rod 505 to be adjusted synchronously. When the device is covered with the sealing cover 4, the second connecting plate 504 will first abut the movable rod 505, causing the movable rod 505 to move downward, the second spring 506 will be stretched, and the first spring 502 will be compressed. After the movable rod 505 moves to the appropriate position, it will completely penetrate the first connecting plate 503 and the second connecting plate 504 under the rental of the first spring 502 and the second spring 506. At this time, the support shell 3 and the sealing cover 4 remain closed. After vacuuming, the movable rod 505 is combined. Figure 1 、 Figure 2 and Figure 4 As shown, the sliding rod 6 in the through hole 7 can always press against the second connecting plate 504 on the sealing assembly 5, thereby utilizing the vacuum environment in the supporting shell 3 and the sealing cover 4 to achieve a secondary pressing function.

[0047] like Figure 7-10 As shown, the device can adjust the front and rear positions of welding by pulling the adjustment block 16 during welding. When the adjustment block 16 moves, the sealing plate 15 keeps the opening 14 in a closed state at all times. The first motor 1801 on the drive assembly 18 drives the first gear 1802 to rotate, and the first gear 1802 drives the second gear 1803 and the screw 19 to rotate. When the screw 19 rotates, the first movable block 21 slides under the limiting action of the guide rod 20, so that welding work of different trajectories can be performed while the device remains sealed. By adjusting the guide assembly 25, the welding trajectory of the device is changed, and the slide plate 2502 in the slide groove 2501 is pulled to make the connecting shafts 2503 at multiple positions rotate synchronously to realize the synchronous adjustment function. The rotation of the connecting shaft 2503 can make the stud 2504 screw in or out on the slide frame 24, thereby changing the initial position of the first support plate 2505 and the second support plate 2506. When the connecting tube 26 moves, it can drive the connecting tube 26, the welding head 27 and the slider 23 to move back and forth on the first movable block 21 under the abutment of the two groups of first support plates 2505 and second support plates 2506 in front and behind the slide frame 24, thereby improving the welding quality of the device.

[0048] Although the present invention has been described above with reference to embodiments, various modifications may be made thereto and equivalent components may be substituted without departing from the scope of the present invention. In particular, as long as there are no structural conflicts, the various features of the embodiments disclosed herein may be combined with each other in any manner, and the omission of an exhaustive description of such combinations in this specification is solely for the sake of space and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A pan-type vacuum welding furnace mechanism, comprising a bottom plate (1), characterized in that: The bottom plate (1) is provided with a shell (2), a support shell (3) is fixedly provided on the shell (2), an exhaust pipe (28) is provided on the support shell (3), a sealing cover (4) is hingedly connected to the support shell (3), a sealing assembly (5) is provided between the sealing cover (4) and the support shell (3), a connecting frame (8) and a baffle (9) are provided on the shell (2), a switching assembly (10) is provided on the sealing cover (4), a first conductive plate (12) and a second conductive plate (13) are provided on the shell (2), an electric heating tube (11) is provided in the shell (2), an opening (14) is provided on the sealing cover (4), an adjusting block (16) is slidably provided in the opening (14), a sealing plate (15) is provided on the adjusting block (16), and a connecting rod ( 17), a driving assembly (18) is installed on the connecting rod (17), a screw (19) is installed on the driving assembly (18), a second movable block (22) is slidably installed on the sealing cover (4), a slider (23) is slidably installed on the second movable block (22), a first movable block (21) is slidably installed at the bottom of the slider (23), the screw (19) and the first movable block (21) are threadedly connected, a sliding frame (24) is provided between the adjusting block (16) and the second movable block (22), a guide assembly (25) is provided on the sliding frame (24), a guide rod (20) is fixedly provided on the second movable block (22), the guide rod (20) passes through the first movable block (21), and a connecting tube (26) and a welding head (27) are installed on the slider (23).

2. The pan-vacuum welding furnace mechanism according to claim 1, characterized in that: The sealing cover (4) is provided with a through hole (7), a slide rod (6) is installed in the through hole (7), one end of the slide rod (6) is in sliding connection with the sealing cover (4), and the other end of the slide rod (6) is in contact with the sealing assembly (5).

3. The pan-vacuum welding furnace mechanism according to claim 2, characterized in that: The sealing assembly (5) comprises a first electric push rod (501) fixedly connected to the base plate (1), a first spring (502) fixedly provided on the first electric push rod (501), a first connecting plate (503) fixedly connected to the support shell (3), a second connecting plate (504) fixedly provided on the sealing cover (4), a movable rod (505) passing through the first connecting plate (503) and the second connecting plate (504), a third connecting plate (507) provided at the bottom of the movable rod (505), a connecting plate (508) fixedly connected between two adjacent third connecting plates (507), a second spring (506) fixedly connected between the third connecting plate (507) and the first connecting plate (503), and the top of the first spring (502) connected to the third connecting plate (507).

4. The pan-vacuum welding furnace mechanism according to claim 3, characterized in that: The top of the movable rod (505) is a hemispherical structure, the support shell (3) forms a snap-fit ​​structure with the sealing cover (4) through the first connecting plate (503), the second connecting plate (504) and the movable rod (505), and the sliding rod (6) and the second connecting plate (504) are in contact with each other.

5. The pan-vacuum welding furnace mechanism according to claim 1, characterized in that: The switching assembly (10) comprises a movable plate (1001) slidably mounted on a sealing cover (4); a first mounting groove (1002) and a second mounting groove (1003) are provided on the sealing cover (4); mounting blocks (1004) are fitted in the movable plate (1001) and the second mounting groove (1003); and a heat insulating block (1005) and a heat conducting block (1006) are fixedly provided in the housing (2).

6. The pan-vacuum welding furnace mechanism according to claim 1, characterized in that: The first conductive plate (12) and the housing (2) are in sliding connection, the second conductive plate (13) and the housing (2) are in fixed connection, the electric heating tube (11) and the heat conducting block (1006) are in fixed connection, and the second conductive plate (13) is connected to the electric heating tube (11).

7. The pan-vacuum welding furnace mechanism according to claim 1, characterized in that: The length of the opening (14) is smaller than the length of the sealing plate (15), the outer wall of the sealing plate (15) and the inner wall of the sealing cover (4) are fitted together, and the sealing plates (15) are symmetrically distributed on both sides of the adjustment block (16).

8. The pan-vacuum welding furnace mechanism according to claim 1, characterized in that: The driving assembly (18) includes a motor (1801) fixedly mounted on the connecting rod (17); a first gear (1802) is fixedly connected to the output shaft of the motor (1801); a second gear (1803) is meshedly connected to the first gear (1802); and the second gear (1803) is fixedly connected to the screw rod (19).

9. The pan-vacuum welding furnace mechanism according to claim 1, characterized in that: The guide assembly (25) includes a first support plate (2505) slidably mounted in the slide frame (24), a second support plate (2506) fixedly connected to the first support plate (2505), a stud (2504) rotatably mounted on the first support plate (2505), and a connecting shaft (2503) fixedly connected to the stud (2504).

10. The pan-vacuum welding furnace mechanism according to claim 9, characterized in that: The connecting shaft (2503) is provided with transverse convex grooves, the bottom of the connecting shaft (2503) is provided with a slide plate (2502) in contact with the bottom, and the slide frame (24) is provided with a slide groove (2501) for the slide plate (2502) to slide.

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