Vacuum brazing device for hardware machining

Abstract

The invention discloses a vacuum brazing device for hardware processing, and relates to the technical field of metal processing, the vacuum brazing device comprises a vacuum furnace assembly, the vacuum furnace assembly comprises a furnace body, the top surface in the furnace body is fixedly connected with a positioning assembly, and the two sides of the positioning assembly are respectively provided with a purging assembly and a drainage assembly. According to the vacuum brazing device for hardware machining, argon in the gas storage box is pumped out through the conveying pipe by starting the sucking pump, and the argon reaches the gas nozzle through the gas outlet pipe to be blown out, so that the effect of purging the welding position of a weldment is achieved, and the problem that the welding quality is poor due to the fact that residual gas exists in the existing vacuum brazing process is solved; the air flow blown out by the air nozzle can be adjusted through the flow adjusting valve, when the pressure gauge detects that the pressure in the furnace body is too large, the blown air flow is adjusted to be small, the air flow entering the drainage air channel is blown to the diffusion blades in a concentrated mode, and the diffusion blades disperse the blown air flow in the rotating process.

Description

Technical Field

[0001] The invention relates to the technical field of metal processing, in particular to a vacuum brazing device for hardware processing. Background Art

[0002] Brazing refers to a welding method that uses a metal material with a lower melting point than the base material as a brazing filler metal, heats the weldment and the brazing filler metal to a temperature higher than the melting point of the brazing filler metal and lower than the melting temperature of the base material, uses the liquid brazing filler metal to wet the base material, fills the joint gap and diffuses with the base material to achieve the connection of the weldment. In a vacuum environment, since there is no influence of oxygen, nitrogen and other gases, the weldment can be effectively prevented from being oxidized and contaminated during the welding process. Therefore, in order to ensure good welding quality during hardware processing, vacuum brazing is chosen.

[0003] In the prior art, such as the Chinese patent number: CN114378394A, a vacuum brazing device for hardware processing is disclosed, including a shell; a vacuum pump; a welding mechanism for welding; a supporting mechanism, and also includes an installation mechanism. In the present invention, the first elastic member pushes the brushing component to brush and clean the end of the hardware body. While the lifting seat rotates horizontally, the pushing mechanism pushes the lifting seat, so that the lifting seat reciprocates and shakes relative to the installation shell, ensuring that the brushing component brushes the end of the hardware body thoroughly. After the brushing is completed, the installation mechanism drives the hardware body to rotate to the horizontal, and the welding mechanism welds the hardware body. During the welding process, the interior of the shell is evacuated by a vacuum pump. Before welding, the end of the hardware body can be efficiently and comprehensively brushed and cleaned, which is convenient and efficient to use.

[0004] However, in the prior art, when brazing is performed under a vacuum environment, some air that has not been completely exhausted may easily remain in the tiny pores or gaps between the two welds. These residual gases may react with the brazing material or the base material during the brazing process, thereby causing defects such as pores and slag inclusions in the welds after welding, resulting in poor quality of the welds.

[0005] Therefore, we propose a vacuum brazing device for hardware processing to solve the above-mentioned problems. Summary of the invention

[0006] The purpose of the present invention is to provide a vacuum brazing device for hardware processing, so as to solve the problem that residual gas exists in the current vacuum brazing process and thus leads to poor welding quality as mentioned in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a vacuum brazing device for hardware processing, comprising a vacuum furnace assembly, the vacuum furnace assembly comprising a furnace body, the inner top surface of the furnace body is fixedly connected to a positioning assembly, the two sides of the positioning assembly are respectively provided with a purge assembly and a drainage assembly, the purge assembly comprises an air storage box, and the air storage box is used to store the purge gas, the top of the air storage box is fixedly connected to a delivery pipe, the outer surface of the delivery pipe is provided with a flow regulating valve, and the flow regulating valve is used to control and adjust the flow of the purge gas when passing through the delivery pipe, and the outer surface of one side of the furnace body is fixedly connected to the outer surface of the furnace body. A support plate is fixedly connected to the support plate, and an air pump is arranged on the top of the support plate, and the air pump is used to generate suction to transport the gas inside the air storage box to the purging part for purging, the input end of the air pump is fixedly connected with one end of the delivery pipe, the output end of the air pump is fixedly connected with an air outlet pipe, one end of the air outlet pipe is fixedly connected with a fixed shaft, one end of the fixed shaft is fixedly connected with an air nozzle, and the air nozzle is used to blow out the purging gas, the outer sleeve of the air outlet pipe is provided with a sealing sleeve, the sealing sleeve is fixedly embedded in the outer surface of the furnace body, and the sealing sleeve is used to prevent the gas inside the furnace body and the external gas from circulating with each other.

[0008] Preferably, a mounting frame is fixedly connected to the top of the furnace body, the gas storage box is snap-fitted and installed inside the mounting frame, a pressure gauge is arranged on the other side of the furnace body, a closed door is rotatably connected to the front surface of the furnace body, a door handle is fixedly connected to the outer surface of the closed door, and two support frames are fixedly connected to the bottom of the furnace body.

[0009] Preferably, multiple heating rods are arranged on the inner walls on both sides of the furnace body, multiple positioning blocks are fixedly connected to the inner bottom surface of the furnace body, limiting strips are fixedly connected between one ends of the multiple positioning blocks, and storage components are arranged between the multiple positioning blocks.

[0010] Preferably, the storage assembly includes a storage plate, telescopic plates are slidably connected to the inside of both sides of the storage plate, sleeve plates are slidably sleeved on the outside of the two telescopic plates, and the storage plate, telescopic plate and sleeve plates are used to place hardware to be brazed.

[0011] Preferably, two fixing rings are fixedly connected to the opposite sides of the two sleeves, a rotating rod is rotatably connected between the inner walls of each two fixing rings, the outer surfaces of the two rotating rods are fixedly connected to limiting sleeves, and the limiting sleeves are used to prevent the rotating rods from detaching from the inside of the fixing rings, and the outer surfaces of the two limiting sleeves are fixedly connected to clamping plates, which can be inserted between the two corresponding positioning blocks.

[0012] Preferably, the positioning assembly includes a reinforcing block, a connecting block is fixedly installed on the top of the reinforcing block, a fixing block is fixedly connected to the top of the connecting block, and the fixing block is fixedly connected to the inner top surface of the furnace body.

[0013] Preferably, a clamping block is fixedly connected to one side of the reinforcement block, a main rod is clamped between the inner walls of the clamping block, a rotation groove is opened inside the main rod, a limiting groove is opened on the top of the rotation groove, a rotating block is rotatably connected to the inner wall of the rotating groove, an adjusting nut is fixedly connected to the bottom of the rotating block, a limiting rod is slidably connected inside the limiting groove, the limiting rod rotates inside the rotating block, a protective pressure rod is fixedly connected to the bottom end of the limiting rod, an adjusting thread is opened on the top end of the protective pressure rod, the inner wall of the adjusting nut is threadedly connected to the adjusting thread, a protective pressure block is fixedly connected to the bottom end of the protective pressure rod, and the protective pressure block is used to apply pressure to the hardware to be brazed to prevent it from tipping over.

[0014] Preferably, a connecting rod is provided on the other side of the clamping block, the bottom end of the connecting rod is fixedly connected to a U-shaped block, the inner walls of the U-shaped block are rotatably connected to a fastening block via a fastening shaft, and the fixed shaft is fixedly embedded in the interior of the fastening block.

[0015] Preferably, the drainage component is fixedly mounted on the outer surface of the other side of the reinforcement block, and the drainage component includes a fixed tube, both ends of the fixed tube are fixedly connected with side retaining rings, a drainage air duct is fixedly connected between the two sides away from each other of the two side retaining rings, one side of the drainage air duct is fixedly connected with a support rod, and one end of the support rod is fixedly connected to the reinforcement block.

[0016] Preferably, a rotating sleeve is provided on the outside of the fixed tube, and a plurality of diffusion blades are fixedly connected to the outside of the rotating tube along the circumferential direction, and the plurality of diffusion blades are used to evacuate the purging airflow.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. When in use, by starting the vacuum pump, the argon gas inside the gas storage box is extracted through the delivery pipe, and the argon gas reaches the air nozzle through the air outlet pipe and is blown out, so as to achieve the effect of purging the welding part of the weldment, avoiding the problem of residual gas in the current vacuum brazing process, which leads to poor welding quality. The airflow blown out of the air nozzle can be adjusted by the flow regulating valve. When the pressure gauge detects that the pressure inside the furnace body is too high, the purged airflow is reduced, and the airflow entering the drainage air duct is concentrated to the diffusion blades. The diffusion blades will evacuate the purged airflow during the rotation process. The flow of the purging gas can help discharge these exhaust gases. Good airflow circulation helps to improve the heat transfer efficiency and make the heat more evenly distributed on the weldment.

[0018] 2. When in use, insert the card plate between the two positioning blocks accordingly, and place the card plate on the other side symmetrically. After insertion, push the entire storage assembly inward. After pushing it in, the installation is completed. At this time, the limit strip can position the storage assembly so that the storage assembly can be pushed to a fixed position each time. The rotating rod rotates inside the fixed ring, and the card plate can prevent the rotating rod from detaching from the fixed ring. At this time, the two sleeve plates, two telescopic plates and one storage plate can be telescopically adjusted. Place the weldment stably on the storage plate. When the height of the weldment is high, move the storage assembly downward. When the height of the weldment is low, move the storage assembly upward, and adjust the weldment to a position convenient for purging.

[0019] 3. When in use, by turning the adjusting nut, the adjusting nut can drive the rotating block to rotate inside the rotating groove. The rotating block can only rotate and cannot move up and down. Therefore, when the adjusting nut rotates outside the adjusting thread, it will drive the protective pressure block to move up and down. At this time, since the limit rod moves up and down inside the limit groove but cannot rotate, the protective pressure rod can only move up and down, thereby driving the protective pressure block to move up and down. Then the protective pressure block will hold the weldment to prevent the two welds from being skewed due to the melting of the solder. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front perspective view of a vacuum brazing device for hardware processing of the present invention; Figure 2 A rear perspective view of a vacuum brazing device for hardware processing according to the present invention; Figure 3 A side perspective view of a vacuum brazing device for hardware processing according to the present invention; Figure 4 A partial three-dimensional diagram of a vacuum furnace assembly of a vacuum brazing device for hardware processing according to the present invention; Figure 5 It is a perspective view of the structure of a storage component of a vacuum brazing device for hardware processing according to the present invention; Figure 6 For the present invention Figure 5 Enlarged view of point A in the middle; Figure 7 It is a partial three-dimensional diagram of a positioning component of a vacuum brazing device for hardware processing of the present invention; Figure 8 It is a perspective view of the partial structure of the drainage component of a vacuum brazing device for hardware processing of the present invention; Fig. 9 The present invention is a partially cutaway stereoscopic view of a positioning assembly of a vacuum brazing device for hardware processing.

[0021] In the figure: 1. Vacuum furnace assembly; 101. Furnace body; 102. Closed door; 103. Pressure gauge; 104. Mounting frame; 105. Support frame; 106. Door handle; 107. Heating rod; 108. Positioning block; 109. Limiting strip; 2. Positioning assembly; 201. Fixing block; 202. Connecting block; 203. Strengthening block; 204. Clamping block; 205. Main rod; 206. Limiting groove; 207. Rotating groove; 208. Rotating block; 209. Limiting rod; 210. Adjusting nut; 211. Adjusting thread; 212. Protective pressure rod; 213. Protective pressure block; 3. Purge assembly; 301. Gas storage box; 302, delivery pipe; 303, flow regulating valve; 304, vacuum pump; 305, support plate; 306, air outlet pipe; 307, sealing sleeve; 308, fixed shaft; 309, air nozzle; 310, fastening block; 311, U-shaped block; 312, connecting rod; 4, drainage assembly; 401, support rod; 402, drainage air duct; 403, side retaining ring; 404, fixed pipe; 405, rotating pipe; 406, diffusion blade; 5, storage assembly; 501, storage plate; 502, telescopic plate; 503, sleeve plate; 504, fixed ring; 505, clamping plate; 506, limiting sleeve; 507, rotating rod. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only 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 creative work are within the scope of protection of the present invention.

[0023] Example 1: Reference Figure 1-9As shown, the present invention provides a technical solution: a vacuum brazing device for hardware processing, comprising a vacuum furnace assembly 1, the vacuum furnace assembly 1 comprises a furnace body 101, the inner top surface of the furnace body 101 is fixedly connected with a positioning assembly 2, the two sides of the positioning assembly 2 are respectively provided with a purge assembly 3 and a drainage assembly 4, the purge assembly 3 comprises an air storage box 301, and the air storage box 301 is used to store the purge gas, the top of the air storage box 301 is fixedly connected with a delivery pipe 302, the outer surface of the delivery pipe 302 is provided with a flow regulating valve 303, and the flow regulating valve 303 is used to control and adjust The flow rate of the purge gas when passing through the delivery pipe 302, a support plate 305 is fixedly connected to the outside of one side of the furnace body 101, and an air pump 304 is arranged on the top of the support plate 305, and the air pump 304 is used to generate suction to deliver the gas inside the gas storage box 301 to the purge position for purge, the input end of the air pump 304 is fixedly connected to one end of the delivery pipe 302, and the output end of the air pump 304 is fixedly connected to the outlet pipe 306, one end of the outlet pipe 306 is fixedly connected to the fixed shaft 308, and one end of the fixed shaft 308 is fixedly connected to the air nozzle 309, and the air nozzle 309 is fixedly connected to the fixed shaft 308. 09 is used to blow out the purged gas. The outer sleeve of the gas outlet pipe 306 is provided with a sealing sleeve 307, which is fixedly embedded in the outer surface of the furnace body 101, and the sealing sleeve 307 is used to prevent the gas inside the furnace body 101 from circulating with the external gas. A connecting rod 312 is provided on the other side of the clamp block 204. The bottom end of the connecting rod 312 is fixedly connected to a U-shaped block 311. The inner walls of the U-shaped block 311 are rotatably connected to a fastening block 310 through a fastening shaft. The fixed shaft 308 is fixedly embedded in the inside of the fastening block 310. The drainage component 4 is fixedly installed on the reinforcing block 203. On the other side outer surface of the fixed tube 404, the drainage component 4 includes a fixed tube 404, both ends of the fixed tube 404 are fixedly connected with side retaining rings 403, a drainage air duct 402 is fixedly connected between the two sides away from each other, one side of the drainage air duct 402 is fixedly connected with a support rod 401, one end of the support rod 401 is fixedly connected to the reinforcement block 203, and the outer rotating sleeve of the fixed tube 404 is provided with a rotating tube 405, and the outer part of the rotating tube 405 is fixedly connected with a plurality of diffusion blades 406 along the circumferential direction, and the plurality of diffusion blades 406 are used to evacuate the purged airflow.

[0024] In this embodiment, when in use, first, the connecting rod 312 is installed in the other side of the clamping block 204, so as to fix the position of the connecting rod 312 and the U-shaped block 311, and then the fastening block 310 is installed in the U-shaped block 311. The angle of the fastening block 310 can be adjusted, so as to adjust the purging angle of the air nozzle 309. By starting the vacuum pump 304, the gas inside the gas storage box 301 is extracted through the delivery pipe 302 under its pressurized action. The gas stored in the gas storage box 301 is argon. Argon is an inert gas with very stable chemical properties. It will not react with metal at high temperature and will not oxidize the metal. The relative molecular mass of argon is large. During the purging process, impurities and air at the welding point can be effectively discharged. Argon passes through the outlet The pipe 306 reaches the air nozzle 309 and is blown out, thereby achieving the effect of purging the welding part of the weldment, avoiding the problem of residual gas in the current vacuum brazing process, which leads to poor welding quality. The airflow blown out by the air nozzle 309 can be adjusted by the flow regulating valve 303. When the pressure gauge 103 detects that the pressure inside the furnace body 101 is too high, the purged airflow is reduced. After the airflow collides with the weldment, part of the airflow will be reflected to the drainage duct 402. The wind inside the drainage duct 402 is concentrated and blown to the diffusion blades 406. The diffusion blades 406 will evacuate the purged airflow during the rotation process. The flow of the purging gas can help discharge these exhaust gases. Good airflow circulation helps to improve the heat transfer efficiency and make the heat more evenly distributed on the weldment.

[0025] Embodiment 2: Figure 1-9As shown, a mounting frame 104 is fixedly connected to the top of the furnace body 101, and a gas storage box 301 is snap-fitted and installed inside the mounting frame 104. A pressure gauge 103 is arranged on the other side of the furnace body 101. A closed door 102 is rotatably connected to the front surface of the furnace body 101, and a door handle 106 is fixedly connected to the outer surface of the closed door 102. Two supporting frames 105 are fixedly connected to the bottom of the furnace body 101. A plurality of heating rods 107 are arranged on the inner walls of both sides of the furnace body 101. A plurality of positioning blocks 108 are fixedly connected to the inner bottom surface of the furnace body 101. A limiting strip 109 is fixedly connected between one ends of the plurality of positioning blocks 108. A storage assembly 5 is arranged between the plurality of positioning blocks 108. The storage assembly 5 includes a storage plate 501. The storage assembly 5 includes a storage plate 502. The inside of both sides of the plate 501 are slidably connected with telescopic plates 502, and the outsides of the two telescopic plates 502 are slidably sleeved with sleeve plates 503, and the storage plate 501, the telescopic plate 502 and the sleeve plates 503 are used to place hardware to be brazed, and the two sleeve plates 503 are fixedly connected to the opposite sides with two fixing rings 504, and a rotating rod 507 is rotatably connected between the inner walls of each two fixing rings 504, and the outer surfaces of the two rotating rods 507 are fixedly connected to limiting sleeves 506, and the limiting sleeves 506 are used to prevent the rotating rods 507 from detaching from the inside of the fixing rings 504, and the outer surfaces of the two limiting sleeves 506 are fixedly connected to clamping plates 505, and the clamping plates 505 can be inserted between the two corresponding positioning blocks 108.

[0026] In this embodiment, when in use, the closed door 102 is pulled outward by means of the door handle 106, so as to open the closed door 102. When brazing, the heating rod 107 needs to be turned on to heat the inside of the furnace body 101. The heating temperature setting is to melt the brazing material while other metals do not melt. The pressure inside the furnace body 101 can be detected by the pressure gauge 103 to avoid the situation where the pressure inside the furnace body 101 is too high and there is a safety hazard. In addition, the mounting frame 104 is used to install the gas storage box 301. The vacuum furnace is an existing equipment. Vacuum brazing is usually carried out inside the vacuum furnace. When preparing for brazing, the card plate 505 is correspondingly inserted between the two positioning blocks 108, and the other side The card plate 505 is placed symmetrically, and after being inserted, the entire storage assembly 5 is pushed inward. After being pushed in, the installation is completed. At this time, the limit strip 109 can position the storage assembly 5 so that the storage assembly 5 can be pushed to a fixed position each time. The rotating rod 507 rotates inside the fixed ring 504, and the card plate 505 can prevent the rotating rod 507 from detaching from the fixed ring 504. At this time, the two sleeve plates 503, the two telescopic plates 502 and the storage plate 501 can be telescopically adjusted, and the weldment is stably placed on the storage plate 501. When the height of the weldment is high, the storage assembly 5 is moved downward, and when the height of the weldment is low, the storage assembly 5 is moved upward, and the weldment is adjusted to a position convenient for blowing.

[0027] Embodiment three: Figure 1-9As shown, the positioning assembly 2 includes a reinforcing block 203, a connecting block 202 is fixedly installed on the top of the reinforcing block 203, a fixing block 201 is fixedly connected to the top surface of the furnace body 101, a clamping block 204 is fixedly connected to one side of the reinforcing block 203, a main rod 205 is clamped between the inner walls of the clamping block 204, a rotating groove 207 is provided inside the main rod 205, a limiting groove 206 is provided on the top of the rotating groove 207, a rotating block 208 is rotatably connected to the inner wall of the rotating groove 207, and a rotating block 208 is rotatably connected to the rotating groove 207. An adjusting nut 210 is fixedly connected to the bottom of the block 208, and a limiting rod 209 is slidably connected inside the limiting groove 206. The limiting rod 209 rotates inside the rotating block 208. A protective pressure rod 212 is fixedly connected to the bottom end of the limiting rod 209. An adjusting thread 211 is provided at the top of the protective pressure rod 212. The inner wall of the adjusting nut 210 is threadedly connected to the adjusting thread 211. A protective pressure block 213 is fixedly connected to the bottom end of the protective pressure rod 212, and the protective pressure block 213 is used to apply pressure to the hardware to be brazed to prevent it from tipping over.

[0028] In this embodiment, when in use, by fixing the fixing block 201 inside the furnace body 101, the connecting block 202 and the reinforcing block 203 are installed together with screws. At this time, the main rod 205 is clamped inside the clamping block 204. After the weldment is placed, the weldment is placed under the protective pressure block 213. By rotating the adjusting nut 210, the adjusting nut 210 can drive the rotating block 208 to rotate inside the rotating groove 207. The rotating block 208 can only rotate and cannot move up and down. Therefore, when the adjusting nut 210 rotates outside the adjusting thread 211, it will drive the protective pressure block 213 to move up and down. At this time, since the limiting rod 209 moves up and down inside the limiting groove 206 but cannot rotate, the protective pressure rod 212 can only move up and down, thereby driving the protective pressure block 213 to move up and down. Then the protective pressure block 213 will hold the weldment against the two welds, which can prevent the two welds from being skewed due to the melting of the solder.

[0029] The method of use and working principle of the device: When in use, the closed door 102 is pulled outward by means of the door handle 106, so as to open the closed door 102. When brazing, the heating rod 107 needs to be turned on to heat the inside of the furnace body 101. The heating temperature setting is to melt the brazing material while other metals do not melt. The pressure condition inside the furnace body 101 can be detected by the pressure gauge 103 to avoid the situation where the internal pressure of the furnace body 101 is too high and there is a safety hazard. In addition, the mounting frame 104 is used to install the gas storage box 301. The vacuum furnace is an existing equipment. Vacuum brazing is usually carried out inside the vacuum furnace. When preparing for brazing, the card plate 505 is correspondingly inserted between the two positioning blocks 108, and the card plate 505 on the other side is placed symmetrically. Insert Then the entire storage assembly 5 is pushed inwards, and the installation is completed after it is pushed in. At this time, the limit strip 109 can position the storage assembly 5 so that the storage assembly 5 can be pushed to a fixed position each time. The rotating rod 507 rotates inside the fixing ring 504, and the clamping plate 505 can prevent the rotating rod 507 from detaching from the fixing ring 504. At this time, the two sleeve plates 503, the two telescopic plates 502 and the storage plate 501 can be telescopically adjusted, and the weldment is placed stably on the storage plate 501. When the height of the weldment is high, the storage assembly 5 is moved downward. When the height of the weldment is low, the storage assembly 5 is moved upward, and the weldment is adjusted to a position that is convenient for purging. When in use, the fixing block 201 is fixed inside the furnace body 101, and the connection is fixed with screws. The block 202 and the reinforcing block 203 are installed together. At this time, the main rod 205 is clamped inside the clamping block 204. After the weldment is placed, the weldment is placed under the protective pressure block 213. By rotating the adjusting nut 210, the adjusting nut 210 can drive the rotating block 208 to rotate inside the rotating groove 207. The rotating block 208 can only rotate and cannot move up and down. Therefore, when the adjusting nut 210 rotates outside the adjusting thread 211, it will drive the protective pressure block 213 to move up and down. At this time, since the limiting rod 209 moves up and down inside the limiting groove 206 but cannot rotate, the protective pressure rod 212 can only move up and down, thereby driving the protective pressure block 213 to move up and down, then the protective pressure block 213 will hold the weldment against. When in use, first, The connecting rod 312 is installed in the other side of the clamping block 204, so as to fix the position of the connecting rod 312 and the U-shaped block 311, and then the fastening block 310 is installed in the U-shaped block 311. The angle of the fastening block 310 can be adjusted, so as to adjust the purging angle of the air nozzle 309. By starting the vacuum pump 304, the gas inside the gas storage box 301 is extracted through the delivery pipe 302 under its pressurized action. The gas stored in the gas storage box 301 is argon. Argon is an inert gas with very stable chemical properties. It will not react with metal at high temperature and will not oxidize the metal. The relative molecular mass of argon is large. During the purging process, impurities and air at the welding point can be effectively discharged. The argon reaches the air nozzle 309 through the outlet pipe 306 and is blown out.In this way, the effect of blowing the weldment welding part is achieved. The airflow blown out by the air nozzle 309 can be adjusted by the flow regulating valve 303. When the pressure gauge 103 detects that the pressure inside the furnace body 101 is too high, the blowing airflow is reduced. After the airflow collides with the weldment, part of the airflow will be reflected to the drainage duct 402. The wind inside the drainage duct 402 is concentrated and blown to the diffusion blade 406. The diffusion blade 406 will evacuate the blowing airflow during the rotation process.

[0030] The wiring diagram of the pressure gauge 103, heating rod 107, flow regulating valve 303 and vacuum pump 304 in the present invention is common knowledge in the field, and its working principle is a well-known technology. The model is selected according to the actual use, so the control method and wiring arrangement of the pressure gauge 103, heating rod 107, flow regulating valve 303 and vacuum pump 304 will not be explained in detail.

[0031] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vacuum brazing device for hardware processing, comprising a vacuum furnace assembly (1), the vacuum furnace assembly (1) comprising a furnace body (101), a positioning assembly (2) being fixedly connected to the inner top surface of the furnace body (101), a purge assembly (3) and a drainage assembly (4) being respectively arranged on both sides of the positioning assembly (2), characterized in that: The purge assembly (3) comprises a gas storage box (301), and the gas storage box (301) is used to store purge gas. The top of the gas storage box (301) is fixedly connected to a delivery pipe (302), and a flow regulating valve (303) is arranged on the outer surface of the delivery pipe (302), and the flow regulating valve (303) is used to control and adjust the flow rate of the purge gas when passing through the delivery pipe (302). A support plate (305) is fixedly connected to the outside of one side of the furnace body (101), and an air pump (304) is arranged on the top of the support plate (305), and the air pump (304) is used to generate suction to transport the gas inside the gas storage box (301) to the purge position for purge. The vacuum pump (304) is fixedly connected to one end of the delivery pipe (302), the vacuum pump (304) is fixedly connected to an outlet pipe (306) at its output end, the outlet pipe (306) is fixedly connected to a fixed shaft (308) at one end, the fixed shaft (308) is fixedly connected to an air nozzle (309) at one end, and the air nozzle (309) is used to blow out the purging gas, the outlet pipe (306) is externally sheathed with a sealing sleeve (307), the sealing sleeve (307) is fixedly embedded in the outer surface of the furnace body (101), and the sealing sleeve (307) is used to prevent the gas inside the furnace body (101) from circulating with the external gas.

2. The vacuum brazing device for hardware processing according to claim 1, characterized in that: The top of the furnace body (101) is fixedly connected to a mounting frame (104), the gas storage box (301) is snap-fitted and mounted inside the mounting frame (104), a pressure gauge (103) is arranged on the other side of the furnace body (101), a closed door (102) is rotatably connected to the front surface of the furnace body (101), a door handle (106) is fixedly connected to the outer surface of the closed door (102), and two support frames (105) are fixedly connected to the bottom of the furnace body (101).

3. The vacuum brazing device for hardware processing according to claim 2, characterized in that: A plurality of heating rods (107) are disposed on the inner walls of both sides of the furnace body (101); a plurality of positioning blocks (108) are fixedly connected to the inner bottom surface of the furnace body (101); a limiting strip (109) is fixedly connected between one ends of the plurality of positioning blocks (108); and a storage assembly (5) is disposed between the plurality of positioning blocks (108).

4. The vacuum brazing device for hardware processing according to claim 3, characterized in that: The storage assembly (5) comprises a storage plate (501), the interior of both sides of the storage plate (501) are slidably connected with telescopic plates (502), the exteriors of the two telescopic plates (502) are slidably sleeved with sleeve plates (503), and the storage plate (501), the telescopic plate (502) and the sleeve plates (503) are used to place hardware to be brazed.

5. The vacuum brazing device for hardware processing according to claim 4, characterized in that: Two fixing rings (504) are fixedly connected to the sides of the two sleeve plates (503) that are away from each other. A rotating rod (507) is rotatably connected between the inner walls of each of the two fixing rings (504). The outer surfaces of the two fixing rods (507) are fixedly connected to a limiting sleeve (506), and the limiting sleeve (506) is used to prevent the fixing rod (507) from escaping from the inside of the fixing ring (504). The outer surfaces of the two limiting sleeves (506) are fixedly connected to a clamping plate (505), and the clamping plate (505) can be inserted between two corresponding positioning blocks (108).

6. The vacuum brazing device for hardware processing according to claim 5, characterized in that: The positioning assembly (2) comprises a reinforcing block (203), a connecting block (202) is fixedly mounted on the top of the reinforcing block (203), a fixing block (201) is fixedly connected to the top of the connecting block (202), and the fixing block (201) is fixedly connected to the inner top surface of the furnace body (101).

7. The vacuum brazing device for hardware processing according to claim 6, characterized in that: A clamping block (204) is fixedly connected to one side of the reinforcing block (203); a main rod (205) is clamped between the inner walls of the clamping block (204); a rotation groove (207) is provided inside the main rod (205); a limiting groove (206) is provided at the top of the rotation groove (207); a rotating block (208) is rotatably connected to the inner wall of the rotation groove (207); an adjusting nut (210) is fixedly connected to the bottom of the rotating block (208); and a limiting rod (205) is slidably connected to the inside of the limiting groove (206). 209), the limiting rod (209) rotates inside the rotating block (208), the bottom end of the limiting rod (209) is fixedly connected to a protective pressure rod (212), the top end of the protective pressure rod (212) is provided with an adjustment thread (211), the inner wall of the adjustment nut (210) is threadedly connected to the adjustment thread (211), the bottom end of the protective pressure rod (212) is fixedly connected to a protective pressure block (213), and the protective pressure block (213) is used to apply pressure to the hardware to be brazed to prevent it from tipping over.

8. The vacuum brazing device for hardware processing according to claim 7, characterized in that: A connecting rod (312) is provided on the other side of the clamping block (204); the bottom end of the connecting rod (312) is fixedly connected to a U-shaped block (311); the inner walls of the U-shaped block (311) are rotatably connected to a fastening block (310) via a fastening shaft; and the fixed shaft (308) is fixedly embedded in the interior of the fastening block (310).

9. The vacuum brazing device for hardware processing according to claim 8, characterized in that: The drainage component (4) is fixedly mounted on the outer surface of the other side of the reinforcement block (203), and the drainage component (4) comprises a fixed tube (404), both ends of the fixed tube (404) are fixedly connected to side retaining rings (403), a drainage air duct (402) is fixedly connected between the two sides of the two side retaining rings (403) that are away from each other, and a support rod (401) is fixedly connected to one side of the drainage air duct (402), and one end of the support rod (401) is fixedly connected to the reinforcement block (203).

10. The vacuum brazing device for hardware processing according to claim 9, characterized in that: The fixed tube (404) is provided with a rotating sleeve on its exterior. A plurality of diffusion blades (406) are fixedly connected to the exterior of the rotating tube (405) along a circumferential direction. The plurality of diffusion blades (406) are used to evacuate the purging airflow.

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