Welding slag cleaning device for vacuum reflow soldering furnace

Abstract

The invention discloses a welding slag cleaning device for a vacuum reflow soldering furnace, and relates to the technical field of vacuum reflow soldering, the welding slag cleaning device comprises a cleaning table, two sides of the cleaning table are provided with transfer mechanisms for driving an electronic board to move, and the upper surface of the cleaning table is provided with a circulating mechanism for recycling a protective cover. A circulating mechanism is arranged on the upper surface of the cleaning table, a spraying mechanism for spraying a cleaning agent is arranged on the lower surface of the circulating mechanism, a cleaning mechanism for cleaning welding slag is arranged on the lower surface of the circulating mechanism, and a collecting mechanism for collecting the welding slag is arranged at one end of the upper surface of the cleaning table. The welding slag on the electronic board is prevented from being manually cleaned, the labor cost is saved, the working efficiency is improved, the electronic board is protected by using the protective cover, and the situation that electronic components are damaged in the cleaning process of the electronic board, and the product quality is affected is avoided.

Description

Technical Field

[0001] This invention relates to the field of vacuum reflow soldering technology, specifically to a slag cleaning device for a vacuum reflow soldering furnace. Background Technology

[0002] A vacuum reflow oven, also known as a vacuum welding furnace, is a type of furnace that performs high-quality welding on products in a vacuum environment. During the heating or cooling process, a reducing system is introduced to protect the product and solder from oxidation. At the same time, the oxides on the surface of the product and solder react with the oxides, thereby improving the surface quality of the weld and reducing the void rate of the weld.

[0003] Currently, most vacuum reflow soldering furnaces use flux to assist in soldering electronic boards, resulting in solder slag residue on some solder joints after soldering. This residue needs to be cleaned to ensure product quality. However, due to the large number of electronic components on the boards, this is usually done manually by operators using brushes. This requires dedicated personnel for slag cleaning, increasing labor costs. Furthermore, operator fatigue during long hours can affect their work efficiency, thus impacting the efficiency of slag cleaning. To address these issues, the inventor proposes a slag cleaning device for vacuum reflow soldering furnaces. Summary of the Invention

[0004] To address the problem of manually cleaning welding slag generated during welding, the present invention aims to provide a welding slag cleaning device for a vacuum reflow oven.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a slag cleaning device for a vacuum reflow oven, comprising a cleaning table, a transfer mechanism for moving electronic boards on both sides of the cleaning table, a circulation mechanism for circulating a protective cover on the upper surface of the cleaning table, a spraying mechanism for spraying cleaning agent on the lower surface of the circulation mechanism, a cleaning mechanism for cleaning slag on the lower surface of the circulation mechanism, and a collection mechanism for collecting slag at one end of the upper surface of the cleaning table.

[0006] Preferably, the cleaning table includes a base plate. Six movable strips are slidably mounted on the upper surface of the base plate, with the sides of two opposing movable strips in close proximity making contact with both sides of the electronic board. A fixing block is fixedly mounted on the lower surface of each movable strip, and the fixing block is slidably disposed inside the base plate. Two rectangular blocks are slidably mounted on the sides of each opposing movable strip, and sliders are fixedly mounted on the sides of the rectangular blocks, with the sliders slidably disposed inside the movable strips. A double-ended screw is rotatably mounted inside the movable strip, and two sliders are threaded onto the double-ended screw. A vertical rod is rotatably mounted inside the fixing block, and the top of the vertical rod rotates... The device is installed inside the moving bar. A first bevel gear is fixedly installed at the center of the top of the vertical rod. A second bevel gear is fixedly installed on the outer surface of the middle part of the double-ended screw, and the second bevel gear meshes with the first bevel gear. A first gear is fixedly installed at the center of the bottom end of the vertical rod. Twelve first toothed plates are fixedly installed inside the base plate, and the first gears and first toothed plates are movably meshed. A moving rod is slidably installed inside the rectangular block. A limit block is fixedly installed at the center of the end of the moving rod near the fixed block, and the sides of the limit blocks that are close to each other are in movable contact with the two sides of the electronic board. A first spring is fixedly installed between the limit block and the rectangular block.

[0007] Preferably, the transfer mechanism includes a mounting plate, with two mounting plates respectively installed on both sides of the base plate. Two movable blocks are slidably mounted on the upper surface of the mounting plate, and a horizontal bar is slidably mounted inside the movable block, with both ends of the horizontal bar slidably passing through the movable block. A limit post is fixedly mounted on the lower surface of the horizontal bar, and the limit post is slidably engaged inside the U-shaped groove of the mounting plate. Two first connecting strips are fixedly mounted on the side of the horizontal bar near the movable strip, and a first mounting strip is fixedly mounted on the side of the first connecting strip away from the horizontal bar. Nine limit rods are slidably mounted inside the first mounting strip, and the end of the limit rod away from the horizontal bar is fixedly connected to the movable strip. Three second springs are fixedly mounted between the movable strip and the first mounting strip. A transmission rod is rotatably mounted inside the mounting plate, and the two transmission rods are driven by a synchronous pulley and a synchronous belt. A rotating plate is fixedly mounted at the center of the top of the transmission rod, and the bottom end of the limit post slidably passes through the rotating plate. A mounting frame is fixedly mounted on the lower surface of the mounting plate on the left side, and a motor is fixedly mounted inside the mounting frame, with the center of the top of the motor output shaft fixedly connected to the transmission rod.

[0008] Preferably, the circulation mechanism includes a fixed frame, which is fixedly mounted on a base plate. An installation frame is fixedly mounted on the upper surface of the fixed frame. Several heating tubes are fixedly mounted inside both the fixed frame and the installation frame. First nozzles are fixedly mounted inside the fixed frame and on the lower surface of the installation frame. Two electric cylinders are fixedly mounted on the upper surface of the installation frame. A mechanical claw is fixedly mounted at the center of the bottom end of the electric cylinder output shaft. The limiting claws of the mechanical claws are in movable contact with each other's sides and the sides of the protective cover. Square plates are fixedly mounted on both sides of the fixed frame. Two square blocks are slidably mounted on the upper surface of the square plates. A second... The mounting strip has two ends that slide through the square block. Two second connecting strips are fixedly installed on the sides of the two second mounting strips that are close to each other. A rectangular strip is fixedly installed on the end of the second connecting strip away from the second mounting strip. Six push rods are slidably installed inside the rectangular strip. A clamping strip is fixedly installed on the end of the push rod away from the second mounting strip. The sides of the two clamping strips that are close to each other and the two sides of the protective cover are in contact with each other. Three third springs are fixedly installed between the rectangular strip and the clamping strip. A fixing post is fixedly installed on the lower surface of the second mounting strip. The bottom end of the fixing post is slidably inserted into the groove of the square plate.

[0009] Preferably, a rotating bar is rotatably mounted on the upper surface of the square plate, and the bottom end of the fixed column slides through the rotating bar. Rectangular plates are fixedly mounted on both sides of the base plate. A connecting rod is rotatably mounted inside the rectangular plate, and the connecting rod and the transmission rod are driven by a synchronous pulley and a synchronous belt. The top end of the connecting rod is rotatably located inside the square plate, and the center of the top end of the connecting rod is fixedly connected to the rotating bar.

[0010] Preferably, the spraying mechanism includes a storage tank, which is fixedly installed on the lower surface of the fixed frame. A second nozzle is fixedly installed on the lower surface of the storage tank. A water pump is fixedly installed inside the storage tank. Two connecting pipes are fixedly installed on the upper surface of the water pump. The end of the connecting pipe away from the water pump is fixedly connected to the side of the second nozzle. A valve is provided on the outer surface of the connecting pipe. A fourth bevel gear is fixedly installed at the center of the end of the valve away from the connecting pipe. Fixed frames are fixedly installed on both sides of the base plate. An installation rod and a rotating rod are rotatably installed inside the fixed frames. The installation rod and the rotating rod are driven by a synchronous pulley and a synchronous belt. A third bevel gear is fixedly installed at the center of the top of the installation rod. The third bevel gear and the fourth bevel gear mesh with each other. A second gear is fixedly installed at the center of the bottom end of the rotating rod. Two second toothed plates are fixedly installed on the upper surface of the crossbar. The second toothed plates and the second gear are movably meshed.

[0011] Preferably, the cleaning mechanism includes fixed plates, and two fixed plates are fixedly installed on the lower surface of the mounting frame. A brush is rotatably installed between the two fixed plates. Both ends of the brush are fixedly installed with rotating shafts, and the ends of the rotating shafts that are far apart from each other are rotatably installed through the fixed plates and rotatably disposed inside the fixed frame. A crossbar is rotatably installed inside the fixed frame, and the crossbar and the rotating shaft are driven by a synchronous pulley and a synchronous belt. A third gear is fixedly installed at the center of the end of the crossbar near the crossbar. A third toothed plate is fixedly installed on the upper surface of the crossbar, and the third toothed plate and the third gear are movably meshed.

[0012] Preferably, the collection mechanism includes a vacuum cleaner, which is fixedly mounted on a base plate. A suction tube is fixedly mounted on the side of the vacuum cleaner. A fixed box is fixedly connected to the end of the suction tube away from the vacuum cleaner. The fixed box is fixedly mounted on the base plate. A storage box is slidably mounted inside the fixed box. A rod is slidably inserted into the side of the fixed box. One end of the rod movably passes through the storage box and is movably inserted into the inside of the fixed box. A transport tube is fixedly mounted on the upper surface of the fixed box. A suction head is fixedly connected to the end of the transport tube away from the fixed box.

[0013] Preferably, two fixing strips are fixedly installed on the lower surface of the fixed frame, and the suction head is slidably disposed on the lower surface of the fixing strips. A movable box is slidably installed on the lower surface of the fixed frame. Two third connecting strips are fixedly installed on the side of the movable box near the fixing strips, and the end of the third connecting strip away from the movable box is fixedly connected to the suction head. A rotating rod is rotatably installed inside the fixed frame, and the bottom end of the rotating rod rotatably passes through the fixed frame. A rotating arm is fixedly installed at the center of the bottom end of the rotating rod. A guide post is fixedly installed on the lower surface of the rotating arm, and the bottom end of the guide post is slidably inserted into the inside of the movable box.

[0014] Preferably, two vertical bars are fixedly installed on the lower surface of the mounting frame near the vacuum cleaner, and a gear is rotatably installed between the two vertical bars. A toothed plate is fixedly installed on the side of the mechanical claw near the vertical bars, and the mechanical claw is located on the side near the vacuum cleaner. The toothed plate and the gear are movably meshed. A support bar is fixedly installed on the lower surface of the mounting frame near the vacuum cleaner, and a one-way bearing is rotatably installed inside the support bar. The center of the one-way bearing near the vertical bar is fixedly connected to the gear. A support plate is fixedly installed on the upper surface of the mounting frame near the vacuum cleaner, and a transmission rod is rotatably installed inside the support plate. The transmission rod and the one-way bearing are driven by a synchronous pulley and a synchronous belt. A bevel gear is fixedly installed at the center of the end of the transmission rod away from the synchronous pulley, and a second bevel gear is fixedly installed at the center of the top of the rotating rod. The second bevel gear meshes with the first bevel gear.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. This invention automatically cleans solder slag on electronic boards by setting up a spraying mechanism and a cleaning mechanism, avoiding manual cleaning of solder slag on electronic boards, saving labor costs and improving work efficiency. Secondly, the electronic boards are protected by using a protective cover to prevent damage to electronic components during the cleaning process, which would affect product quality.

[0017] 2. In this invention, the movement of the moving bar is driven by the cooperation between the transmission rod and the limiting post, and the movement of the limiting block is driven by the cooperation between the vertical rod and the double-headed screw, so as to position the electronic board and align the electronic board with the protective cover, thus preventing the protective cover from failing to cover the electronic board.

[0018] 3. In this invention, the suction head is driven to move by the cooperation between the one-way bearing, the transmission rod, the rotating rod and the guide column, so that the suction head can reciprocate to pick up the residual solder slag on the electronic board. The collected solder slag is collected and stored by the storage box, which facilitates the centralized processing of the solder slag. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. 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 creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 This is a schematic diagram of the overall cross-sectional structure of the present invention.

[0022] Figure 3 This is a schematic diagram of the cleaning table and transfer mechanism of the present invention.

[0023] Figure 4 This is a cross-sectional structural diagram of the spraying mechanism and cleaning mechanism of the present invention.

[0024] Figure 5 This is a schematic cross-sectional view of the circulation mechanism of the present invention.

[0025] Figure 6 This is a schematic cross-sectional view of the collection mechanism of the present invention.

[0026] Figure 7 For the present invention Figure 3 An enlarged schematic diagram of the structure at point A.

[0027] Figure 8 For the present invention Figure 4 Enlarged schematic diagram of the structure at point B.

[0028] In the diagram: 1. Cleaning table; 101. Base plate; 102. Moving bar; 103. Fixing frame; 104. Rectangular plate; 105. Connecting rod; 106. Rectangular block; 107. Slider; 108. Double-ended screw; 109. Moving rod; 110. Limiting block; 111. First spring; 112. Fixing block; 113. Vertical rod; 114. First gear; 115. First toothed plate; 116. First bevel gear; 117. Second bevel gear; 118. Mounting rod; 119. Rotating rod; 120. Second gear; 121. Second toothed plate; 122. Crossbar; 123. Third gear; 124. Third toothed plate; 125. Third bevel gear; 2. Transfer mechanism; 201. Mounting plate; 202. Rotating plate; 203. Transmission rod; 204. Mounting bracket; 205. Motor; 206. Moving block; 207. Crossbar; 208. First connecting bar; 209. First mounting bar; 210. Limiting post; 211. Limiting rod; 212. Second spring; 3. Circulation mechanism; 301. Fixed frame; 302. Mounting frame; 303. Heating tube; 304. First nozzle; 305. 306. Electric cylinder; 307. Mechanical gripper; 308. Square plate; 309. Rotating bar; 310. Square block; 311. Second mounting bar; 312. Second connecting bar; 313. Rectangular bar; 314. Push rod; 315. Third spring; 316. Clamping bar; 317. Fixed column; 318. Rotating rod; 319. Rotating arm; 320. Moving box; 321. Third connecting bar; 322. First toothed plate; 323. Vertical bar; 324. First gear; 325. Support bar; 326. One-way bearing; 327. Support plate; 328. Transmission 328. Guide rod; 329. First bevel gear; 330. Second bevel gear; 331. Fixing strip; 332. Guide column; 4. Spraying mechanism; 401. Storage box; 402. Water pump; 403. Connecting pipe; 404. Second nozzle; 405. Valve; 406. Fourth bevel gear; 5. Cleaning mechanism; 501. Fixing plate; 502. Brush; 503. Rotating shaft; 6. Collection mechanism; 601. Vacuum cleaner; 602. Suction hose; 603. Fixing box; 604. Storage box; 605. Insert rod; 606. Transport pipe; 607. Suction head. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Example: Figure 1-8As shown, the present invention provides a slag cleaning device for a vacuum reflow oven, including a cleaning table 1. The cleaning table 1 has a transfer mechanism 2 on both sides for moving electronic boards and limiting their movement. The upper surface of the cleaning table 1 has a circulation mechanism 3 for recycling and cleaning the protective cover, facilitating reuse. The lower surface of the circulation mechanism 3 has a spraying mechanism 4 for spraying cleaning agent, facilitating subsequent slag cleaning. The lower surface of the circulation mechanism 3 also has a cleaning mechanism 5 for cleaning the slag. One end of the upper surface of the cleaning table 1 has a collection mechanism 6 for collecting slag, absorbing and collecting the slag remaining on the electronic boards.

[0031] The cleaning table 1 includes a base plate 101. Six movable bars 102 are slidably mounted on the upper surface of the base plate 101, and the sides of two opposing movable bars 102 that are close to each other are in active contact with the sides of the electronic board. A fixing block 112 is fixedly mounted on the lower surface of the movable bars 102, and the fixing block 112 is slidably disposed inside the base plate 101. Two rectangular blocks 106 are slidably mounted on the sides of two opposing movable bars 102 that are close to each other. A slider 107 is fixedly mounted on the side of the rectangular block 106, and the slider 107 is slidably disposed inside the movable bar 102. A double-ended screw 108 is rotatably mounted inside the movable bar 102, and two sliders 107 are threadedly connected to the double-ended screw 108. A vertical rod 113 is rotatably mounted inside the fixing block 112, and the top of the vertical rod 113 is rotatably disposed inside the fixing block 112. Inside the movable bar 102, a first bevel gear 116 is fixedly installed at the top center of the vertical rod 113, a second bevel gear 117 is fixedly installed on the middle outer surface of the double-ended screw 108, and the second bevel gear 117 meshes with the first bevel gear 116. A first gear 114 is fixedly installed at the bottom center of the vertical rod 113. Twelve first toothed plates 115 are fixedly installed inside the base plate 101, and the first gear 114 and the first toothed plates 115 are movably meshed. A movable rod 109 is slidably installed inside the rectangular block 106. A limit block 110 is fixedly installed at the center of one end of the movable rod 109 near the fixed block 112, and the sides of the limit blocks 110 that are close to each other are in movable contact with the two sides of the electronic board. A first spring 111 is fixedly installed between the limit block 110 and the rectangular block 106.

[0032] By adopting the above technical solution, the moving bar 102 and the fixed block 112 can position the electronic board.

[0033] The transfer mechanism 2 includes a mounting plate 201, with two mounting plates 201 respectively installed on both sides of the base plate 101. Two movable blocks 206 are slidably mounted on the upper surface of the mounting plate 201. A horizontal bar 207 is slidably mounted inside the movable block 206, with both ends of the horizontal bar 207 slidably passing through the movable block 206. A limit post 210 is fixedly mounted on the lower surface of the horizontal bar 207, and the limit post 210 is slidably engaged inside the U-shaped groove of the mounting plate 201. Two first connecting bars 208 are fixedly mounted on the side of the horizontal bar 207 near the movable bar 102. A first mounting bar 209 is fixedly mounted on the side of the first connecting bar 208 away from the horizontal bar 207. Nine limiters are slidably mounted inside the first mounting bar 209. Positioning rod 211, with the end of positioning rod 211 away from horizontal bar 207 fixedly connected to moving bar 102. Three second springs 212 are fixedly installed between moving bar 102 and first mounting bar 209. Transmission rod 203 is rotatably installed inside mounting plate 201, and the two transmission rods 203 are driven by synchronous pulley and synchronous belt. Rotating plate 202 is fixedly installed at the top center of transmission rod 203, and the bottom end of positioning post 210 slides through rotating plate 202. Mounting bracket 204 is fixedly installed on the lower surface of mounting plate 201 on the left side. Motor 205 is fixedly installed inside mounting bracket 204, and the top center of output shaft of motor 205 is fixedly connected to transmission rod 203.

[0034] By adopting the above technical solution, the motor 205 can drive the moving bar 102 to move.

[0035] The circulation mechanism 3 includes a fixed frame 301, which is fixedly mounted on the base plate 101. A mounting frame 302 is fixedly mounted on the upper surface of the fixed frame 301. Several heating tubes 303 are fixedly mounted inside both the fixed frame 301 and the mounting frame 302. First nozzles 304 are fixedly mounted inside the fixed frame 301 and on the lower surface of the mounting frame 302. Two electric cylinders 305 are fixedly mounted on the upper surface of the mounting frame 302. A mechanical claw 306 is fixedly mounted at the center of the bottom end of the output shaft of the electric cylinder 305. The limiting claws of the mechanical claws 306 are in active contact with the sides of the protective cover. Square plates 307 are fixedly mounted on both sides of the fixed frame 301. Two square blocks 309 are slidably mounted on the upper surface of the square plates 307. A second mounting bracket is slidably mounted inside each square block 309. The second mounting strip 310 has two ends that slide through the square block 309. Two second connecting strips 311 are fixedly installed on the sides of the two second mounting strips 310 that are close to each other. A rectangular strip 312 is fixedly installed on the end of the second connecting strip 311 away from the second mounting strip 310. Six push rods 313 are slidably installed inside the rectangular strip 312. A clamping strip 315 is fixedly installed on the end of the push rod 313 away from the second mounting strip 310. The sides of the two clamping strips 315 that are close to each other and the two sides of the protective cover are in contact. Three third springs 314 are fixedly installed between the rectangular strip 312 and the clamping strips 315. A fixing post 316 is fixedly installed on the lower surface of the second mounting strip 310. The bottom end of the fixing post 316 is slidably inserted into the groove of the square plate 307.

[0036] By adopting the above technical solution, the clamping bar 315 can drive the protective cover to move.

[0037] A rotating bar 308 is rotatably mounted on the upper surface of the square plate 307, and the bottom end of the fixed column 316 slides through the rotating bar 308. Rectangular plates 104 are fixedly mounted on both sides of the base plate 101. A connecting rod 105 is rotatably mounted inside the rectangular plate 104, and the connecting rod 105 and the transmission rod 203 are driven by a synchronous pulley and a synchronous belt. The top end of the connecting rod 105 is rotatably located inside the square plate 307, and the center of the top end of the connecting rod 105 is fixedly connected to the rotating bar 308.

[0038] By adopting the above technical solution, the rotating bar 308 can drive the fixed column 316 to move in a rectangular shape.

[0039] The spraying mechanism 4 includes a storage tank 401, which is fixedly installed on the lower surface of the fixed frame 301. A second nozzle 404 is fixedly installed on the lower surface of the storage tank 401. A water pump 402 is fixedly installed inside the storage tank 401. Two connecting pipes 403 are fixedly installed on the upper surface of the water pump 402. The end of the connecting pipe 403 away from the water pump 402 is fixedly connected to the side of the second nozzle 404. A valve 405 is provided on the outer surface of the connecting pipe 403. A fourth bevel gear 406 is fixedly installed at the center of the end of the valve 405 away from the connecting pipe 403. A fixing frame 103 is fixedly installed on both sides of the plate 101. A mounting rod 118 and a rotating rod 119 are rotatably installed inside the fixing frame 103. The mounting rod 118 and the rotating rod 119 are driven by a synchronous pulley and a synchronous belt. A third bevel gear 125 is fixedly installed at the center of the top of the mounting rod 118, and the third bevel gear 125 meshes with the fourth bevel gear 406. A second gear 120 is fixedly installed at the center of the bottom of the rotating rod 119. Two second toothed plates 121 are fixedly installed on the upper surface of the crossbar 207, and the second toothed plates 121 and the second gear 120 are movably meshed.

[0040] By adopting the above technical solution, the rotating rod 119 can control the spraying of the second nozzle 404.

[0041] The cleaning mechanism 5 includes a fixed plate 501, and two fixed plates 501 are fixedly installed on the lower surface of the mounting frame 302. A brush 502 is rotatably installed between the two fixed plates 501. A rotating shaft 503 is fixedly installed at both ends of the brush 502. The ends of the rotating shafts 503 that are far apart from each other rotatably pass through the fixed plates 501 and are rotatably set inside the fixed frame 103. A crossbar 122 is rotatably installed inside the fixed frame 103. The crossbar 122 and the rotating shaft 503 are driven by a synchronous pulley and a synchronous belt. A third gear 123 is fixedly installed at the center of the end of the crossbar 122 near the crossbar 207. A third toothed plate 124 is fixedly installed on the upper surface of the crossbar 207. The third toothed plate 124 and the third gear 123 are movably meshed.

[0042] By adopting the above technical solution, the crossbar 122 can drive the brush 502 to rotate.

[0043] The collection mechanism 6 includes a vacuum cleaner 601, which is fixedly mounted on a base plate 101. A suction tube 602 is fixedly mounted on the side of the vacuum cleaner 601. A fixed box 603 is fixedly connected to the end of the suction tube 602 away from the vacuum cleaner 601. The fixed box 603 is fixedly mounted on the base plate 101. A storage box 604 is slidably mounted inside the fixed box 603. A rod 605 is slidably inserted into the side of the fixed box 603. One end of the rod 605 movably passes through the storage box 604 and is movably inserted into the fixed box 603. A transport tube 606 is fixedly mounted on the upper surface of the fixed box 603. A suction head 607 is fixedly connected to the end of the transport tube 606 away from the fixed box 603.

[0044] By adopting the above technical solution, the vacuum cleaner 601 is able to clean the residual solder slag on the electronic board.

[0045] Two fixing strips 330 are fixedly installed on the lower surface of the fixing frame 301, and the suction head 607 is slidably disposed on the lower surface of the fixing strips 330. A movable box 319 is slidably installed on the lower surface of the fixing frame 301. Two third connecting strips 320 are fixedly installed on the side of the movable box 319 near the fixing strips 330, and the end of the third connecting strip 320 away from the movable box 319 is fixedly connected to the suction head 607. A rotating rod 317 is rotatably installed inside the fixing frame 301, and the bottom end of the rotating rod 317 rotatably passes through the fixing frame 301. A rotating arm 318 is fixedly installed at the center of the bottom end of the rotating rod 317. A guide post 331 is fixedly installed on the lower surface of the rotating arm 318, and the bottom end of the guide post 331 is slidably inserted into the inside of the movable box 319.

[0046] By adopting the above technical solution, the rotating rod 317 can drive the suction head 607 to move.

[0047] Two vertical bars 322 are fixedly mounted on the lower surface of the mounting frame 302 near the vacuum cleaner 601. A gear 323 is rotatably mounted between the two vertical bars 322. A toothed plate 321 is fixedly mounted on the side of the mechanical claw 306 near the vertical bars 322, and the mechanical claw 306 is located on the side near the vacuum cleaner 601. The toothed plate 321 and the gear 323 are movably meshed. A support bar 324 is fixedly mounted on the lower surface of the mounting frame 302 near the vacuum cleaner 601. A one-way bearing 325 is rotatably mounted inside the support bar 324, and the center of the one-way bearing 325 near the vertical bar 322 is fixedly connected to the gear 323. A support plate 326 is fixedly mounted on the upper surface of the mounting frame 301 near the vacuum cleaner 601. A transmission rod 327 is rotatably mounted inside 326, and the transmission rod 327 and the one-way bearing 325 are driven by a synchronous pulley and a synchronous belt. Since the one-way bearing 325 is divided into an inner ring and an outer ring, when the outer ring rotates, the inner ring may rotate or not rotate. Therefore, when the first gear plate 321 moves downward and meshes with the first gear 323, it cannot drive the transmission rod 327 to rotate. When the first gear plate 321 moves upward and meshes with the first gear 323, it can drive the transmission rod 327 to rotate. A first bevel gear 328 is fixedly mounted at the center of the end of the transmission rod 327 away from the synchronous pulley. A second bevel gear 329 is fixedly mounted at the center of the top of the rotating rod 317, and the second bevel gear 329 meshes with the first bevel gear 328.

[0048] By adopting the above technical solution, the first gear 323 can drive the rotating rod 317 to rotate.

[0049] Working principle: First, the rotation of motor 205 drives the transmission rod 203 to rotate. The rotation of transmission rod 203 drives the rotating plate 202 to rotate. The rotation of rotating plate 202 drives the limiting post 210 to make a circular motion. At this time, due to the sliding of the limiting post 210, it is inside the loop groove of mounting plate 201, thereby driving the limiting post 210 to make a rectangular movement. At this time, the horizontal and vertical movement of the limiting post 210 drives the horizontal bar 207 to move. The movement of the horizontal bar 207 drives the first connecting bar 208 to move. The movement of the first connecting bar 208 drives the first mounting bar 209 to move. The movement of the first mounting bar 209 drives the limiting rod 211 to move. The movement of the limiting rod 211 drives the moving bar 102 to move. When the moving bar 102 moves longitudinally, the sides of the moving bar 102 that are close to each other come into contact with the two sides of the electronic board, clamping the electronic board. 2. When moving laterally, the fixed block 112 moves laterally. The movement of the fixed block 112 drives the first gear 114 to move. When the first gear 114 meshes with the first toothed plate 115, the first gear 114 rotates. The rotation of the first gear 114 drives the vertical rod 113 to rotate. The rotation of the vertical rod 113 drives the first bevel gear 116 to rotate. The rotation of the first bevel gear 116 drives the second bevel gear 117 to rotate. The rotation of the second bevel gear 117 drives the double-headed screw 108 to rotate. The rotation of the double-headed screw 108 drives the slider 107 to move. The movement of the slider 107 drives the rectangular block 106 to move. The movement of the rectangular block 106 drives the moving rod 109 to move. The movement of the moving rod 109 drives the fixed block 112 to move, so that the sides of the fixed block 112 that are close to each other and the sides of the electronic board that are away from the moving bar 102 come into contact, thereby positioning the electronic board.

[0050] Secondly, the rotation of the transmission rod 203 drives the connecting rod 105 to rotate, which in turn drives the rotating bar 308 to rotate. The rotation of the rotating bar 308 then drives the fixed column 316 to perform a circular motion. Since the bottom end of the fixed column 316 is slidably inserted into the U-shaped groove of the square plate 307, the fixed column 316 moves in a rectangular motion. This movement of the fixed column 316 drives the second mounting bar 310 to move, which in turn drives the second connecting bar 311 to move. The movement of the second connecting bar 311 then drives the rectangular bar 312 to move, which in turn drives the push rod 313 to move. The electric cylinder 305 drives the clamping strips 315 to move, so that the sides of the clamping strips 315 that are close to each other come into contact with the two sides of the protective cover, clamping the protective cover and moving it. When the protective cover passes the two first nozzles 304, the water sprayed by the first nozzles 304 cleans the protective cover. When the protective cover passes the drying area formed by the heating tube 303, the cleaned protective cover is dried, making it convenient for reuse. When the protective cover moves to the end of the fixed frame 301 away from the vacuum cleaner 601, the electric cylinder 305 drives the mechanical claw 306 to move, clamping the protective cover and moving it so that the protective cover covers the electronic board.

[0051] Then, the moving bar 102 drives the electronic board covering the protective cover to continue moving, moving the electronic board to the spraying area. At this time, the second gear 120 is rotated when the second toothed plate 121 meshes with the second gear 120. The rotation of the second gear 120 drives the rotating rod 119 to rotate, which in turn drives the mounting rod 118 to rotate. The rotation of the mounting rod 118 drives the third bevel gear 125 to rotate, which in turn drives the fourth bevel gear 406 to rotate. The rotation of the fourth bevel gear 406 drives the valve 405 to rotate, opening the valve 405. At this time, the cleaning agent enters the second nozzle 404 through the connecting pipe 403. 404 is sprayed to apply the cleaning agent to the solder feet of the electronic board. When the electronic board covered by the protective cover leaves the spraying area, the engagement of the second toothed plate 121 and another second gear 120 drives the valve 405 to rotate, closing the valve 405. Then, the moving bar 102 drives the electronic board covered by the protective cover to continue moving, so that the electronic board covered by the protective cover passes through the cleaning area. At this time, the engagement of the third toothed plate 124 and the third gear 123 drives the third gear 123 to rotate. The rotation of the third gear 123 drives the crossbar 122 to rotate. The rotation of the crossbar 122 drives the rotating shaft 503 to rotate. The rotation of the rotating shaft 503 drives the brush 502 to rotate. The rotation of the brush 502 cleans the solder slag on the electronic board.

[0052] Finally, the moving bar 102 drives the electronic board covered by the protective cover to continue moving, moving the electronic board covered by the protective cover to the end of the bottom plate 101 near the vacuum cleaner 601. At this time, the electric cylinder 305 near the vacuum cleaner 601 drives the mechanical claw 306 to move, clamping the protective cover and moving it upwards to separate the protective cover from the electronic board. When the mechanical claw 306 on the side near the vacuum cleaner 601 moves upwards, it drives the first gear plate 321 to move. When the first gear plate 321 and the first gear 323 mesh, the first gear 323 rotates. The rotation of the first gear 323 drives the one-way bearing 325 to rotate, and the rotation of the one-way bearing 325 drives the transmission rod 327 to rotate. The rotation of the first bevel gear 328 drives the first bevel gear 328 to rotate, which in turn drives the second bevel gear 329 to rotate, which in turn drives the rotating rod 317 to rotate, which in turn drives the rotating arm 318 to rotate, which in turn drives the guide column 331 to move in a circle. This circular motion can be decomposed into lateral and longitudinal movements. When the guide column 331 moves laterally, it slides inside the moving box 319. When the guide column 331 moves longitudinally, it drives the moving box 319 to move, which in turn drives the third connecting strip 320 to move, which in turn drives the suction head 607 to move. The suction head 607 then picks up the residual solder slag on the electronic board, thus completing the cleaning of the solder slag on the electronic board.

[0053] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A slag cleaning device for a vacuum reflow oven, comprising a cleaning table (1), characterized in that: The cleaning platform (1) is provided with a transfer mechanism (2) on both sides to move the electronic board. The upper surface of the cleaning platform (1) is provided with a circulation mechanism (3) for the cyclic use of the protective cover. The lower surface of the circulation mechanism (3) is provided with a spraying mechanism (4) for spraying cleaning agent. The lower surface of the circulation mechanism (3) is provided with a cleaning mechanism (5) for cleaning welding slag. One end of the upper surface of the cleaning platform (1) is provided with a collection mechanism (6) for collecting welding slag.

2. The slag cleaning device for a vacuum reflow oven as described in claim 1, characterized in that, The cleaning table (1) includes a base plate (101). Six movable strips (102) are slidably mounted on the upper surface of the base plate (101), and the sides of two opposing movable strips (102) that are close to each other are in active contact with the sides of the electronic board. A fixing block (112) is fixedly mounted on the lower surface of the movable strips (102), and the fixing block (112) is slidably disposed inside the base plate (101). Two rectangular blocks (106) are slidably mounted on the sides of two opposing movable strips (102). A slider (107) is fixedly mounted on the side of the rectangular block (106), and the slider (107) is slidably disposed inside the movable strip (102). A double-ended screw (108) is rotatably mounted inside the movable strip (102), and two sliders (107) are threadedly connected to the double-ended screw (108). A vertical rod (113) is rotatably mounted inside the fixing block (112), and the top end of the vertical rod (113) is rotatably disposed inside the fixed block (112). Inside the moving bar (102), a first bevel gear (116) is fixedly installed at the center of the top of the vertical rod (113), a second bevel gear (117) is fixedly installed on the outer surface of the middle part of the double-ended screw (108), and the second bevel gear (117) meshes with the first bevel gear (116). A first gear (114) is fixedly installed at the center of the bottom end of the vertical rod (113), and twelve first toothed plates (114) are fixedly installed inside the base plate (101). 5), and the first gear (114) and the first toothed plate (115) are in active meshing. A moving rod (109) is slidably installed inside the rectangular block (106). A limiting block (110) is fixedly installed at the center of one end of the moving rod (109) near the fixed block (112). The sides of the limiting blocks (110) that are close to each other are in active contact with the two sides of the electronic board. A first spring (111) is fixedly installed between the limiting block (110) and the rectangular block (106).

3. The slag cleaning device for a vacuum reflow oven as described in claim 2, characterized in that, The transfer mechanism (2) includes a mounting plate (201), and two mounting plates (201) are respectively installed on both sides of the base plate (101). Two moving blocks (206) are slidably installed on the upper surface of the mounting plate (201). A horizontal bar (207) is slidably installed inside the moving block (206), and both ends of the horizontal bar (207) slide through the moving block (206). A limit post (210) is fixedly installed on the lower surface of the horizontal bar (207), and the limit post (210) is slidably engaged in the groove of the mounting plate (201). Two first connecting bars (208) are fixedly installed on the side of the horizontal bar (207) near the moving bar (102). A first mounting bar (209) is fixedly installed on the side of the first connecting bar (208) away from the horizontal bar (207). A sliding part is installed inside the first mounting bar (209). Nine limiting rods (211) are provided, and the end of the limiting rod (211) away from the horizontal bar (207) is fixedly connected to the moving bar (102). Three second springs (212) are fixedly installed between the moving bar (102) and the first mounting bar (209). A transmission rod (203) is rotatably installed inside the mounting plate (201), and the two transmission rods (203) are driven by a synchronous pulley and a synchronous belt. A rotating plate (202) is fixedly installed at the center of the top of the transmission rod (203), and the bottom end of the limiting post (210) slides through the rotating plate (202). A mounting bracket (204) is fixedly installed on the lower surface of the mounting plate (201) on the left side. A motor (205) is fixedly installed inside the mounting bracket (204), and the center of the top of the output shaft of the motor (205) is fixedly connected to the transmission rod (203).

4. The slag cleaning device for a vacuum reflow oven as described in claim 2, characterized in that, The circulation mechanism (3) includes a fixed frame (301), which is fixedly mounted on the base plate (101). An installation frame (302) is fixedly mounted on the upper surface of the fixed frame (301). Several heating tubes (303) are fixedly mounted inside both the fixed frame (301) and the installation frame (302). First nozzles (304) are fixedly mounted inside the fixed frame (301) and on the lower surface of the installation frame (302). 2) Two electric cylinders (305) are fixedly installed on the upper surface. A mechanical claw (306) is fixedly installed at the bottom center of the output shaft of the electric cylinder (305). The limiting claws of the mechanical claw (306) are in active contact with each other on their sides and the two sides of the protective cover. Square plates (307) are fixedly installed on both sides of the fixed frame (301). Two square blocks (309) are slidably installed on the upper surface of the square plate (307). Slidably installed inside the square blocks (309) There is a second mounting strip (310), and the two ends of the second mounting strip (310) slide through the square block (309). Two second connecting strips (311) are fixedly installed on the sides of the two second mounting strips (310) that are close to each other. A rectangular strip (312) is fixedly installed on the end of the second connecting strip (311) away from the second mounting strip (310). Six push rods (313) are slidably installed inside the rectangular strip (312). A clamping strip (315) is fixedly installed on the end of the push rod (313) away from the second mounting strip (310). The sides of the two clamping strips (315) that are close to each other and the two sides of the protective cover are in contact. Three third springs (314) are fixedly installed between the rectangular strip (312) and the clamping strip (315). A fixing post (316) is fixedly installed on the lower surface of the second mounting strip (310), and the bottom end of the fixing post (316) is slidably inserted into the groove of the square plate (307).

5. A slag cleaning device for a vacuum reflow oven as described in claim 4, characterized in that, A rotating bar (308) is rotatably mounted on the upper surface of the square plate (307), and the bottom end of the fixed column (316) slides through the rotating bar (308). Rectangular plates (104) are fixedly mounted on both sides of the base plate (101). A connecting rod (105) is rotatably mounted inside the rectangular plate (104), and the connecting rod (105) and the transmission rod (203) are driven by a synchronous pulley and a synchronous belt. The top end of the connecting rod (105) is rotatably set inside the square plate (307), and the center of the top end of the connecting rod (105) is fixedly connected to the rotating bar (308).

6. The slag cleaning device for a vacuum reflow oven as described in claim 3, characterized in that, The spraying mechanism (4) includes a storage tank (401), which is fixedly installed on the lower surface of the fixed frame (301). A second nozzle (404) is fixedly installed on the lower surface of the storage tank (401). A water pump (402) is fixedly installed inside the storage tank (401). Two connecting pipes (403) are fixedly installed on the upper surface of the water pump (402). One end of the connecting pipe (403) away from the water pump (402) is fixedly connected to the side of the second nozzle (404). A valve (405) is provided on the outer surface of the connecting pipe (403). A fourth bevel gear (406) is fixedly installed at the center of the end of the valve (405) away from the connecting pipe (403). The base plate (101) is fixedly mounted on both sides with a fixing frame (103). The fixing frame (103) is rotatably mounted with a mounting rod (118) and a rotating rod (119). The mounting rod (118) and the rotating rod (119) are driven by a synchronous pulley and a synchronous belt. A third bevel gear (125) is fixedly mounted at the center of the top of the mounting rod (118). The third bevel gear (125) and the fourth bevel gear (406) mesh with each other. A second gear (120) is fixedly mounted at the center of the bottom of the rotating rod (119). Two second toothed plates (121) are fixedly mounted on the upper surface of the crossbar (207). The second toothed plates (121) and the second gear (120) are movably meshed.

7. The slag cleaning device for a vacuum reflow oven as described in claim 1, characterized in that, The cleaning mechanism (5) includes a fixed plate (501), and two fixed plates (501) are fixedly installed on the lower surface of the mounting frame (302). A brush (502) is rotatably installed between the two fixed plates (501). A rotating shaft (503) is fixedly installed at both ends of the brush (502). The ends of the rotating shafts (503) that are far apart from each other rotate through the fixed plate (501) and are rotatably set inside the fixed frame (103). A crossbar (122) is rotatably installed inside the fixed frame (103). The crossbar (122) and the rotating shaft (503) are driven by a synchronous pulley and a synchronous belt. A third gear (123) is fixedly installed at the center of the end of the crossbar (122) near the crossbar (207). A third toothed plate (124) is fixedly installed on the upper surface of the crossbar (207). The third toothed plate (124) and the third gear (123) are movably meshed.

8. A slag cleaning device for a vacuum reflow oven as described in claim 1, characterized in that, The collection mechanism (6) includes a vacuum cleaner (601), which is fixedly mounted on a base plate (101). A suction tube (602) is fixedly mounted on the side of the vacuum cleaner (601). A fixed box (603) is fixedly connected to the end of the suction tube (602) away from the vacuum cleaner (601). The fixed box (603) is fixedly mounted on the base plate (101). A storage box (604) is slidably mounted inside the fixed box (603). A rod (605) is slidably inserted into the side of the fixed box (603). One end of the rod (605) movably penetrates the storage box (604) and is movably inserted into the fixed box (603). A transport pipe (606) is fixedly mounted on the upper surface of the fixed box (603). A suction head (607) is fixedly connected to the end of the transport pipe (606) away from the fixed box (603).

9. A slag cleaning device for a vacuum reflow oven as described in claim 4, characterized in that, Two fixing strips (330) are fixedly installed on the lower surface of the fixed frame (301), and the suction head (607) is slidably disposed on the lower surface of the fixing strips (330). A movable box (319) is slidably installed on the lower surface of the fixed frame (301). Two third connecting strips (320) are fixedly installed on the side of the movable box (319) near the fixing strips (330), and the end of the third connecting strip (320) away from the movable box (319) is fixedly connected to the suction head (607). A rotating rod (317) is rotatably installed inside the fixed frame (301), and the bottom end of the rotating rod (317) rotatably passes through the fixed frame (301). A rotating arm (318) is fixedly installed at the center of the bottom end of the rotating rod (317). A guide post (331) is fixedly installed on the lower surface of the rotating arm (318), and the bottom end of the guide post (331) is slidably inserted into the inside of the movable box (319).

10. A slag cleaning device for a vacuum reflow oven as described in claim 4, characterized in that, Two vertical bars (322) are fixedly installed on the lower surface of the mounting frame (302) near the vacuum cleaner (601). A gear (323) is rotatably installed between the two vertical bars (322). A toothed plate (321) is fixedly installed on the side of the mechanical claw (306) near the vertical bars (322), and this mechanical claw (306) is located on the side near the vacuum cleaner (601). The toothed plate (321) and the gear (323) are movably meshed. A support bar (324) is fixedly installed on the lower surface of the mounting frame (302) near the vacuum cleaner (601). A one-way bearing (325) is rotatably installed inside the support bar (324). 325) A first gear (323) is fixedly connected to the center of one end near the vertical bar (322). A support plate (326) is fixedly installed on the upper surface of the fixed frame (301) near the vacuum cleaner (601). A transmission rod (327) is rotatably installed inside the support plate (326). The transmission rod (327) and the one-way bearing (325) are driven by a synchronous pulley and a synchronous belt. A first bevel gear (328) is fixedly installed at the center of the end of the transmission rod (327) away from the synchronous pulley. A second bevel gear (329) is fixedly installed at the center of the top of the rotating rod (317). The second bevel gear (329) meshes with the first bevel gear (328).

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