Intelligent vacuum brazing furnace

Abstract

The invention relates to the technical field of vacuum brazing furnaces, in particular to an intelligent vacuum brazing furnace which comprises a plurality of sets of lifting assemblies used for lifting a bearing plate for bearing a weldment, each lifting assembly comprises a rotating rod, two sets of driving wheels are symmetrically installed on the surface of each rotating rod, and driven teeth are connected to the surfaces of the driving wheels in a meshed mode; and a rotating shaft rotationally connected with the inner wall of the supporting frame is inserted into the driven teeth, the surface of the rotating shaft is sleeved with a belt wheel set, ejector blocks are symmetrically arranged on one side of the belt wheel set, and the ejector blocks are arranged under the through grooves. Through cooperative use of all parts, a workpiece can slightly vibrate in the brazing process, so that bubbles generated in molten brazing filler metal are conveniently discharged, and the brazing quality is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum brazing furnaces, in particular to an intelligent vacuum brazing furnace. Background Art

[0002] Intelligent vacuum brazing furnaces are widely used in the connection of various precision parts. Its working principle is mainly based on the low temperature and high purity atmosphere in a vacuum environment to achieve material connection. Under vacuum conditions, oxygen and other impurities in the air are eliminated, making the welding process purer and more stable. When the workpiece is placed in the vacuum brazing furnace, the high temperature in the vacuum environment heats the workpiece surface and the brazing material to a certain temperature, and then the brazing material melts and forms a uniform wetting film on the workpiece surface through surface tension and capillary force, thereby achieving connection between the workpieces.

[0003] However, during the brazing process, since the brazing filler metal is artificially applied to the workpiece surface in advance in an external environment, it is easy for impurities to be mixed into the brazing filler metal, resulting in the appearance of bubbles during the brazing process. This not only destroys the continuity and uniformity of the weld, but may also become a stress concentration point, reducing the strength and toughness of the joint, and affecting the quality and performance of the final product. Summary of the invention

[0004] The purpose of the present invention is to provide an intelligent vacuum brazing furnace to solve the problem in the prior art proposed in the above background technology that impurities are easily mixed into the brazing material in advance in the external environment, resulting in bubbles during brazing, destroying the quality of the weld and reducing the performance of the joint, thereby affecting the quality of the final product.

[0005] To achieve the above object, the present invention provides the following technical solutions: an intelligent vacuum brazing furnace, comprising a brazing furnace body, wherein two groups of symmetrically arranged support frames are fixedly installed inside the brazing furnace body, and a cavity is opened inside the support frame, and further comprising: a buffer pad is attached to the upper surface of the support frame, and two groups of through grooves and guide grooves are symmetrically penetrated through the surface of the support frame and the surface of the buffer pad, and a limiting groove is opened on the inner bottom surface of the support frame; It also includes multiple groups of lifting components for lifting the carrying plate that carries the weldment, the lifting components include a rotating rod, two groups of driving wheels are symmetrically installed on the surface of the rotating rod, the surface of the driving wheel is meshed with driven teeth, a rotating shaft rotatably connected to the inner wall of the support frame is inserted inside the driven teeth, a pulley group is sleeved on the surface of the rotating shaft, a top block is symmetrically provided on one side of the pulley group, and the top block is arranged directly below the through groove.

[0006] Furthermore, the rotating rod is arranged between the two groups of support frames and extends to the inside of the support frames, and one end of the rotating rod is fixedly connected to a driving motor, and the driving motor is installed outside the brazing furnace body.

[0007] Furthermore, the two groups of driving wheels are both arranged inside the support frame, and the two groups of driving wheels are arranged correspondingly.

[0008] Furthermore, the other end of the pulley group is rotatably connected to the inner wall of the support frame through a connecting shaft, and the pulley group is connected through a transmission belt, and the transmission belt is set to be ∞ in a plane state.

[0009] Furthermore, it also includes two groups of symmetrically arranged limit assemblies for limiting the bearing plate, the limit assembly includes a circular gear symmetrically arranged inside the support frame, and the circular gear is arranged on the surface of the rotating shaft through a friction damping bearing sleeve, the surface of the circular gear is meshingly connected with a tooth plate, and a circular hole is opened at one end of the tooth plate, a guide rod is inserted into the inside of the circular hole, and one end of the guide rod is rotatably connected to the inner wall of the support frame, two groups of guide grooves are symmetrically opened on the surface of the guide rod, and extrusion blocks are symmetrically arranged on the surface of the guide groove, a connecting rod is fixedly installed on the upper surface of the tooth plate, and a lifting block is slidably sleeved on the surface of the connecting rod, and one side of the lifting block is telescopically connected to the limit plate.

[0010] Furthermore, two groups of limit rods are symmetrically installed on the inner wall of the circular hole, an insertion rod is inserted into the inner wall of the circular hole, and the lower end of the insertion rod penetrates the inner wall of the circular hole and extends to the outside, the lower end of the insertion rod is a hemispherical structure, and the lower end of the insertion rod is inserted into the inside of the limit groove and slidably cooperates with it.

[0011] Furthermore, the guide groove is formed by a group of transverse grooves, arc grooves, straight grooves and connecting grooves. The end of the transverse groove is smoothly connected to the arc groove, the end of the arc groove is smoothly connected to the straight groove, the end of the straight groove is connected to the connecting groove, the end of the connecting groove is smoothly connected to the transverse groove, and the depth of the connecting groove from the beginning to the end is from deep to shallow.

[0012] Furthermore, the upper end of the connecting rod penetrates through the interior of the guide groove and extends to the outside, and two sets of sliding blocks are symmetrically installed on the surface of the connecting rod, and the sliding blocks are slidably matched with the deep grooves opened on the inner wall of the guide groove.

[0013] Furthermore, a plurality of groups of balls are symmetrically mounted on the surface of the connecting rod, and the balls are slidably matched with the inner wall of the lifting block.

[0014] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects: 1. The present invention provides a rotating rod, a driven tooth, a top block and other components that cooperate with each other. During the brazing process, the top block located inside the two groups of support frames can be driven to rotate intermittently through the rotation of the rotating rod and extend from the inside of the through groove, so that the supporting plate with the brazing workpiece is intermittently lifted and lowered, causing slight vibration to the supporting plate, so that the bubbles generated in the brazing material can be discharged to the outside, thereby ensuring the continuity and uniformity of the weld during the brazing process of the workpiece, so that the final product meets the production quality.

[0015] 2. The present invention provides circular gears, guide grooves, limit plates and other components that cooperate with each other, so that before the carrier plate on which the workpiece to be brazed is placed is lifted, the circular gear will rotate synchronously with the rotating shaft, and drive the connecting rods installed on the toothed plate to begin to approach the carrier plate, and under the action of the pulley group, drive another group of symmetrically arranged connecting rods to move synchronously, so that the limit plates installed on the lifting block begin to clamp the carrier plate, so that the carrier plate will not deviate when it is lifted up and dropped, ensuring that it is lifted and dropped later to facilitate the discharge of bubbles in the melted brazing material. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 Schematic cross-sectional view of ; Figure 3 It is a schematic diagram of the overall structure of the support frame of the present invention; Figure 4 It is a schematic diagram of the structure of the lifting assembly of the present invention; Figure 5 It is a partial structural schematic diagram of the position limiting assembly of the present invention; Figure 6 It is a schematic diagram of the internal structure of the tooth plate of the present invention; Figure 7 for Figure 6 A schematic diagram of the structure enlargement in the middle; Figure 8 It is a schematic diagram of the overall structure of the guide groove of the present invention; Fig. 9 It is a schematic diagram of the structural coordination of the connecting rod and the lifting block of the present invention.

[0018] In the figure: 1. brazing furnace body; 2. support frame; 201. buffer pad; 202. through groove; 203. guide groove; 204. limit groove; 3. lifting assembly; 301. rotating rod; 302. driving wheel; 303. driven gear; 304. rotating shaft; 305. pulley group; 306. top block; 4. limit assembly; 401. circular gear; 402. tooth plate; 4021. round hole; 4022. limit rod; 4023. plug rod; 403. guide rod; 404. guide groove; 4041. transverse groove; 4042. arc groove; 4043. straight groove; 4044. connecting groove; 405. extrusion block; 406. connecting rod; 4061. slider; 4062. ball; 407. lifting block; 408. limit plate. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] The present invention will be further described below in conjunction with the embodiments.

[0021] Embodiment: An intelligent vacuum brazing furnace, such as Figure 1-Figure 9 As shown, it includes a brazing furnace body 1, two groups of symmetrically arranged support frames 2 are fixedly installed inside the brazing furnace body 1, and a cavity is opened inside the support frame 2, and the support frame 2 is used to place a bearing plate carrying a workpiece to be brazed; and further includes: a buffer pad 201 is attached to the upper surface of the support frame 2, and the buffer pad 201 is provided to buffer the bearing plate, and at the same time, the friction between the bearing plate and the surface of the support frame 2 can be reduced; Among them, two groups of through grooves 202 and guide grooves 203 are symmetrically opened on the surface of the support frame 2 and the surface of the buffer pad 201, and a limiting groove 204 is opened on the inner bottom surface of the support frame 2. By setting the through grooves 202, the guide grooves 203 and the limiting grooves 204, the role of limiting guidance can be played.

[0022] Combined with Figure 1 -Attached Fig. 9, and also includes a plurality of lifting assemblies 3 for lifting the bearing plate carrying the weldment, so that during the brazing process of the workpiece, the bearing plate can be intermittently lifted up to make the bearing plate vibrate slightly, so that the bubbles generated in the melted brazing material can be discharged to the outside; the lifting assembly 3 includes a rotating rod 301, the rotating rod 301 is arranged between the two groups of support frames 2 and extends to the inside of the support frames 2, and one end of the rotating rod 301 is fixedly connected to a driving motor, and the driving motor is installed on the outside of the brazing furnace body 1, by arranging the rotating rod 301 and the driving motor, the rotating rod 301 can be driven to rotate synchronously when the driving motor rotates, thereby playing a driving role; the surface of the rotating rod 301 is symmetrically installed with two groups of driving wheels 302, and by arranging the driving wheels 302, it can rotate synchronously with the rotating rod 301; Among them, two groups of driving wheels 302 are both arranged inside the support frame 2, and the two groups of driving wheels 302 are arranged correspondingly. By correspondingly arranging the driving wheels 302, the supporting plate can be intermittently lifted up; the surface of the driving wheel 302 is meshingly connected with the driven teeth 303, and by arranging the driven teeth 303, it can rotate under the action of the driving wheel 302; a rotating shaft 304 rotatably connected to the inner wall of the support frame 2 is inserted into the interior of the driven teeth 303, and by arranging the rotating shaft 304, a limiting role can be played; it is worth mentioning that a torsion spring is sleeved on the surface of the rotating shaft 304, and the two ends of the torsion spring are respectively clamped with the inner wall of the support frame 2 and the surface of the driven teeth 303. By arranging the torsion spring, when the rotating shaft 304 rotates, it can be driven to deform and generate a reaction force, so as to drive the rotating rotating shaft 304 to reset.

[0023] The cam 306 is provided on the upper surface of the rotating shaft 304, and the other end of the cam 306 is rotatably connected to the inner wall of the supporting frame 2 through the connecting shaft. The cam 306 is connected through a transmission belt, and the transmission belt is arranged in an ∞ shape in a plane state. By arranging the cam 306 and the transmission belt in an ∞ shape, the rotation directions of the two ends of the cam 306 are opposite when the cam 306 rotates. A top block 306 is symmetrically provided on one side of the cam 305, and the top block 306 is arranged just below the through groove 202. By arranging the top block 306, the two groups of top blocks 306 can be driven to rotate synchronously when the cam 306 rotates, so that the top block 306 extends from the inside of the through groove 202 to lift the bearing plate. It is worth noting that the two groups of top blocks 306 are respectively mounted on the surfaces of the rotating shaft 304 and the connecting shaft, and when the two groups of top blocks 306 rotate, the rotation directions are opposite, so that the bearing plate will not deviate to one side when being lifted.

[0024] Combined with Figure 1 -Attached Fig. 9, and also includes two groups of symmetrically arranged limit assemblies 4 for limiting the load-bearing plate, which are used to ensure that the load-bearing plate can be limited first when being lifted up, so that it is in a fixed position, so as to facilitate the intermittent lifting of the load-bearing plate; it is worth noting that the interior of each group of support frames 2 is symmetrically provided with limit assemblies 4; the limit assemblies 4 include circular gears 401 symmetrically arranged inside the support frame 2, and the circular gears 401 are sleeved on the surface of the rotating shaft 304 through friction damping bearings, and by setting the circular gears 401, they can rotate synchronously with the rotating shaft 304; it is worth noting that by setting the friction damping bearings, when the circular gears 401 are obstructed during the rotation process, they will not rotate synchronously with the rotating shaft 304; and only one-fourth of the surface of the circular gears 401 has teeth, and circular gears 401 are symmetrically arranged on both sides of each group of top blocks 306; Among them, the surface of the circular gear 401 is meshedly connected with a tooth plate 402, and by setting the tooth plate 402, the tooth plate 402 can be driven to move laterally when the circular gear 401 rotates; it is worth noting that the tooth plate 402 is elastically connected to the inner wall of the support frame 2 through a return spring; a circular hole 4021 is opened at one end of the tooth plate 402, and by setting the circular hole 4021, it can cooperate with other parts to play a guiding and limiting role; two groups of limiting rods 4022 are symmetrically installed on the inner wall of the circular hole 4021, and by setting the limiting rods 4022, it can play a guiding and driving role; it is worth noting that the limiting rod 4022 has a retractable characteristic; Among them, an insertion rod 4023 is inserted into the inner wall of the circular hole 4021, and the lower end of the insertion rod 4023 penetrates the inner wall of the circular hole 4021 and extends to the outside, the lower end of the insertion rod 4023 is a hemispherical structure, and the lower end of the insertion rod 4023 is inserted into the inside of the limiting groove 204 and slidably cooperates with it. By setting the insertion rod 4023, it can cooperate with the limiting groove 204 to achieve the purpose of positioning; it is worth mentioning that the insertion rod 4023 is elastically connected to the lower surface of the tooth plate 402 through a connecting spring; a guide rod 403 is inserted into the inside of the circular hole 4021, and one end of the guide rod 403 is rotatably connected to the inner wall of the support frame 2. By setting the guide rod 403, the tooth plate 402 can be supported and limited, so that the tooth plate 402 can move laterally and stretch the reset spring.

[0025] Among them, two groups of guide grooves 404 are symmetrically opened on the surface of the guide rod 403, and the guide grooves 404 are provided to play a guiding and driving role; the guide grooves 404 are connected and combined by a group of transverse grooves 4041, arc grooves 4042, straight grooves 4043 and connecting grooves 4044. The transverse grooves 4041 and the limiting rod 4022 are in a sliding matching state in the initial state, and the limiting rod 4022 is located at the right end of the circular hole 4021 in the initial state; the end of the transverse groove 4041 is smoothly connected with the arc groove 4042, and the arc groove 4042 is provided to cooperate with the limiting rod 4022 to realize the role of driving the guide rod 403 to rotate; the end of the arc groove 4042 is smoothly connected with the straight groove 4043, and the arc groove 4042 is provided to cooperate with the limiting rod 4022 to realize the role of driving the guide rod 403 to rotate. The straight groove 4043 is arranged, and when the limiting rod 4022 enters the straight groove 4043 from the inside of the arc groove 4042, the tooth plate 402 is driven to reset in a short distance; the end of the straight groove 4043 is connected with a connecting groove 4044, and the end of the connecting groove 4044 is smoothly connected to the transverse groove 4041. By setting the connecting groove 4044, it can cooperate with the limiting rod 4022 again to achieve the purpose of driving the guide rod 403 to rotate; the depth from the head end to the end of the connecting groove 4044 is opened from deep to shallow, and the head end of the connecting groove 4044 is connected with the end of the straight groove 4043, and then when the limiting rod 4022 enters the end of the straight groove 4043, it will enter the head end of the connecting groove 4044 to limit the tooth plate 402 that is reset in a short distance; Among them, the surface of the guide groove 404 is symmetrically provided with an extrusion block 405, and by providing the extrusion block 405, it can rotate synchronously with the guide rod 403 and squeeze the insertion rod 4023 to move downward into the interior of the limiting groove 204; it is worth noting that when the tooth plate 402 finishes the lateral movement, the insertion rod 4023 moves to the leftmost end of the extrusion block 405; a connecting rod 406 is fixedly installed on the upper surface of the tooth plate 402, and the upper end of the connecting rod 406 penetrates the interior of the guide groove 203 and extends to the outside, and by providing the connecting rod 406, it can move synchronously with the tooth plate 402; two sets of sliders 4061 are symmetrically installed on the surface of the connecting rod 406, and the sliders 4061 and the deep grooves opened on the inner wall of the guide groove 203 Sliding fit, by setting a slider 4061, can play a guiding and limiting role; a plurality of groups of ball bearings 4062 are symmetrically installed on the surface of the connecting rod 406, and by setting the ball bearings 4062, it can play a role of blocking and reducing friction; a lifting block 407 is provided on the surface of the connecting rod 406, and the inner wall of the lifting block 407 is slidingly matched with the ball bearings 4062, and by setting the lifting block 407, the surface of the connecting rod 406 can be lifted and lowered; one side of the lifting block 407 is telescopically connected to a limiting plate 408, and by setting the limiting plate 408, when the connecting rod 406 moves with the tooth plate 402, it can synchronously move to clamp and limit the carrying plate, so that the carrying plate is in a fixed position.

[0026] Specifically, when brazing a workpiece, the workpiece surface is coated with brazing material in advance and placed on the surface of the carrier plate, and then the carrier plate is placed on the surface of the two sets of support frames 2 and heated to melt the brazing material; When the solder melts, the driving motor is started to drive the rotating rod 301 to rotate. The rotating rotating rod 301 drives the driven tooth 303 to start rotating and drives the torsion spring to deform. The rotation of the driven tooth 303 drives the pulley group 305 to rotate synchronously through the rotating shaft 304, so that the top block 306 starts to rotate and extends from the inside of the through groove 202 to lift the bearing plate; during the rotation of the pulley group 305, the circular gear 401 is synchronously driven to rotate, so that the tooth plate 402 meshing with the circular gear 401 starts to move toward the middle position of the support frame 2, and drives the connecting rod 406, the lifting block 407 and the limit plate 408 to move synchronously, and starts to clamp and limit the bearing plate; During the movement of the tooth plate 402, the limiting rod 4022 will first slide inside the transverse groove 4041 and enter the arc groove 4042, so that the guide rod 403 starts to rotate and squeezes the insertion rod 4023, so that the insertion rod 4023 enters the inside of the limiting groove 204. When the tooth plate 402 has completed its movement, the limiting rod 4022 will enter the inside of the straight groove 4043 from the inside of the arc groove 4042, and under the action of the deformed return spring, the tooth plate 402 can drive the connecting rod 406, the lifting block 407 and the limiting plate 408 to reset a short distance, thereby avoiding excessive clamping of the load-bearing plate. The limiting rod 4022 will enter the head end of the arc groove 4042 to limit the tooth plate 402; and then when the bearing plate is lifted up, it will drive the lifting block 407 to slide upward on the surface of the connecting rod 406, and begin to separate from the surface of the support frame 2 by a short distance, and when the driving wheel 302 is separated from the driven tooth 303, the top block 306 will rotate in the opposite direction and restore its original state under the reaction force generated by the deformed torsion spring, and at the same time, the bearing plate falls and vibrates slightly, so as to discharge the bubbles generated in the molten solder, thereby ensuring the continuity and uniformity of the weld during the workpiece brazing process, so that the final product meets the production quality; When the driving motor drives the rotating rod 301 to rotate one circle, the limiting rod 4022 will enter the inside of the circular gear 401 from the inside of the connecting groove 4044. At the same time, the insertion rod 4023 is separated from the extrusion block 405, and begins to move out of the limiting groove 204 to restore its original state, and begins to reset under the reaction force generated by the reset spring, so as to facilitate the processing of the next group of weldments.

[0027] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. An intelligent vacuum brazing furnace, comprising a brazing furnace body (1), wherein two groups of symmetrically arranged support frames (2) are fixedly installed inside the brazing furnace body (1), and a cavity is opened inside the support frame (2), characterized in that: Also includes: The upper surface of the support frame (2) is fitted with a buffer pad (201), the surfaces of the support frame (2) and the buffer pad (201) are both symmetrically provided with two groups of through grooves (202) and guide grooves (203), and the inner bottom surface of the support frame (2) is provided with a limiting groove (204); It also includes a plurality of lifting assemblies (3) for lifting a bearing plate carrying a weldment, wherein the lifting assemblies (3) include a rotating rod (301), two sets of driving wheels (302) are symmetrically mounted on the surface of the rotating rod (301), driven teeth (303) are meshingly connected on the surface of the driving wheels (302), a rotating shaft (304) rotatably connected to the inner wall of the support frame (2) is inserted into the interior of the driven teeth (303), a pulley group (305) is sleeved on the surface of the rotating shaft (304), a top block (306) is symmetrically arranged on one side of the pulley group (305), and the top block (306) is arranged directly below the through slot (202).

2. The intelligent vacuum brazing furnace according to claim 1, characterized in that: The rotating rod (301) is arranged between the two groups of support frames (2) and extends into the interior of the support frames (2), and one end of the rotating rod (301) is fixedly connected to a drive motor, and the drive motor is installed outside the brazing furnace body (1).

3. The intelligent vacuum brazing furnace according to claim 2, characterized in that: The two sets of driving wheels (302) are both arranged inside the support frame (2), and the two sets of driving wheels (302) are arranged correspondingly.

4. The intelligent vacuum brazing furnace according to claim 3, characterized in that: The other end of the pulley group (305) is rotatably connected to the inner wall of the support frame (2) via a connecting shaft, and the pulley group (305) is connected via a transmission belt, and the transmission belt is arranged in an infinity shape in a plane state.

5. The intelligent vacuum brazing furnace according to claim 1, characterized in that: The invention also comprises two groups of symmetrically arranged limit assemblies (4) for limiting the position of the bearing plate, wherein the limit assemblies (4) comprise circular gears (401) symmetrically arranged inside the support frame (2), and the circular gears (401) are arranged on the surface of the rotating shaft (304) via a friction damping bearing sleeve, and the surface of the circular gears (401) is meshingly connected with a toothed plate (402), and a circular hole (4021) is formed at one end of the toothed plate (402), and a guide rod (4021) is inserted into the inside of the circular hole (4021). 3), and one end of the guide rod (403) is rotatably connected to the inner wall of the support frame (2), the surface of the guide rod (403) is symmetrically provided with two groups of guide grooves (404), the surface of the guide grooves (404) is symmetrically provided with extrusion blocks (405), the upper surface of the tooth plate (402) is fixedly mounted with a connecting rod (406), the surface of the connecting rod (406) is slidably sleeved with a lifting block (407), and one side of the lifting block (407) is telescopically connected to a limiting plate (408).

6. The intelligent vacuum brazing furnace according to claim 5, characterized in that: Two groups of limiting rods (4022) are symmetrically mounted on the inner wall of the circular hole (4021); an insertion rod (4023) is inserted into the inner wall of the circular hole (4021); the lower end of the insertion rod (4023) penetrates through the inner wall of the circular hole (4021) and extends to the outside; the lower end of the insertion rod (4023) is a hemispherical structure; and the lower end of the insertion rod (4023) is inserted into the interior of the limiting groove (204) and slidably cooperates therewith.

7. The intelligent vacuum brazing furnace according to claim 5, characterized in that: The guide groove (404) is formed by a group of transverse grooves (4041), arc grooves (4042), straight grooves (4043) and connecting grooves (4044) connected and combined; the end of the transverse groove (4041) is smoothly connected to the arc groove (4042); the end of the arc groove (4042) is smoothly connected to the straight groove (4043); the end of the straight groove (4043) is connected to the connecting groove (4044); the end of the connecting groove (4044) is smoothly connected to the transverse groove (4041); and the depth of the connecting groove (4044) from the beginning to the end is increased from deep to shallow.

8. The intelligent vacuum brazing furnace according to claim 5, characterized in that: The upper end of the connecting rod (406) penetrates through the interior of the guide groove (203) and extends to the outside. Two sets of sliding blocks (4061) are symmetrically mounted on the surface of the connecting rod (406), and the sliding blocks (4061) are slidably matched with deep grooves provided on the inner wall of the guide groove (203).

9. The intelligent vacuum brazing furnace according to claim 8, characterized in that: A plurality of groups of balls (4062) are symmetrically mounted on the surface of the connecting rod (406), and the balls (4062) are slidably matched with the inner wall of the lifting block (407).

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