Composite busbar plastic dipping device and plastic dipping method

Abstract

The invention discloses a composite busbar plastic dipping device and a plastic dipping method. The composite busbar plastic dipping device comprises a suspension conveying line, a preheating mechanism, a fluidization dipping mechanism, a plasticizing mechanism and an air cooling channel, the lifting appliance structure is used for installing the busbar, after the busbar is installed, the first shielding block and the second shielding block automatically shield the positions, needing to be exposed, of the busbar, so that shielding liquid or a shielding sleeve does not need to be adopted for shielding the positions, after plastic dipping is completed, the busbar can be directly taken down, and the overall efficiency is greatly improved; according to the fluidization dipping mechanism, compressed air is input through a plurality of air chambers, so that the input quantity of different positions can be independently adjusted, and a sensor on the top or the side wall of a fluidized bed is matched, so that uniform fluidization of the whole powder is ensured; according to the plastic dipping device, the pulse back-blowing structure is additionally arranged, the pulse back-blowing structure adopts a regular pulse back-blowing mode to scatter agglomerated powder, and an inclined blowing head is additionally arranged at the position of the side wall prone to contamination, so that the powder agglomeration phenomenon is avoided, and the plastic dipping effect is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of composite busbar dipping plastic technology, in particular to a composite busbar dipping plastic device and method. BACKGROUND

[0002] Composite busbar, also known as composite busbar or laminated busbar, is a low inductance busbar structure formed by alternating and laminating conductive layers (such as copper and aluminum) and insulating layers (such as epoxy and polyester). It has the characteristics of low impedance, low voltage drop, strong anti-interference and high heat dissipation efficiency. Through modular design, it is suitable for large current and high voltage scenes and is widely used in power traction, communication base station, new energy equipment and military system power distribution field. Composite busbar dipping plastic refers to the manufacture of composite busbar through dipping plastic process. It perfectly applies the advantages of dipping plastic process to the insulation treatment of busbar. Composite busbar dipping plastic adopts powder dipping process, and the process is as follows: heat the busbar to a temperature above the melting point of the powder, then immerse it in flowing plastic powder (usually polyethylene PE, polyvinyl chloride PVC, nylon PA, etc.), the powder melts instantly when it meets high temperature metal, and uniformly adheres to the surface of the busbar. Then, after heating, the surface coating is completely leveled and solidified, and finally cooled to form a continuous and dense insulating coating. However, the current composite busbar dipping process has the following defects: Some connecting surfaces of the busbar, such as lap joints and bolt holes, need to be exposed after dipping. Therefore, shielding work needs to be done in advance at these positions during dipping. Currently, high-temperature resistant silicone shielding sleeves or peelable shielding liquid are used. After dipping, the shielding material needs to be peeled off, which is a cumbersome process and affects overall efficiency. During dipping, the busbar is dipped in a powder fluidized bed. However, the powder in the fluidized bed may not be uniformly distributed in some positions, and may also agglomerate, affecting the dipping effect.

[0003] Therefore, we propose a composite busbar dipping device and method to solve the above problems. SUMMARY

[0004] The purpose of the present application is to provide a composite busbar dipping device and method to solve the problems raised in the background art.

[0005] In order to achieve the above object, the present application provides the following technical scheme: a composite bus bar plastic dipping device, comprising a suspension conveying line, a preheating mechanism, a fluidized dipping mechanism, a plasticizing mechanism and an air cooling channel, the suspension conveying line comprises an annular track, the bottom of one side of the annular track is provided with a sunken track, two streamlined tracks are fixedly connected between the sunken track and the annular track at both ends, the bottom of the annular track, the sunken track and the streamlined track is provided with a plurality of lifting device structures, the lifting device structure comprises a fixed clamp body assembly and a movable clamp body assembly, the fixed clamp body assembly comprises a plurality of first shielding blocks, a first frame rod is fixedly connected between the first shielding blocks away from the movable clamp body assembly on one side, the bottom surface of the two first shielding blocks at the lowermost position is fixedly connected with a bottom width plate, the movable clamp body assembly comprises a plurality of second shielding blocks, a second frame rod is fixedly connected between the second shielding blocks away from the fixed clamp body assembly on one side, the bottom surface of the two second shielding blocks at the lowermost position is fixedly connected with a bottom strip, and the bottom strip is rotatably connected to the side wall of the bottom width plate. The fluidized dipping mechanism comprises a fluidized bed, the fluidized bed is located directly below the sunken track, a fluidized cavity is formed in the top surface of the fluidized bed, a microporous bed plate is fixedly connected to the bottom surface of the fluidized cavity, a plurality of air chambers are fixedly connected to the position below the microporous bed plate in the fluidized bed, the air chambers are fixedly connected to the bottom surface of the microporous bed plate, and two pulse back-blowing structures are arranged on both sides of the top surface of the fluidized bed. The pulse back-blowing structure comprises three back-blowing pipes, a plurality of back-blowing heads are fixedly connected and communicated with the bottom surface of the back-blowing pipes, the pulse back-blowing structure further comprises a gas supply pipe, a plurality of access pipes are fixedly connected and communicated between the gas supply pipe and the back-blowing pipes, the pulse back-blowing structure further comprises a compressed gas tank, an air inlet pipe is fixedly connected and communicated with the compressed gas tank, the end of the air inlet pipe is fixedly connected and communicated with the gas supply pipe, a plurality of oblique blowing heads are fixedly connected and communicated with the bottom of the back-blowing pipes close to the gas supply pipe, and the oblique blowing heads are inclined towards the direction of the gas supply pipe.

[0006] Preferably, a plurality of supports are fixedly connected to the gas supply pipe, the supports are fixedly connected to the side wall of the fluidized bed, a pulse valve is fixedly connected and communicated with the air inlet pipe, a plurality of branch pipes are fixedly embedded in the bottom interior of the fluidized bed, the end of the branch pipe is fixedly connected and communicated with the air chamber, the branch pipes are fixedly connected and communicated with a main pipe at one end outside the fluidized bed, and the fluidized dipping mechanism further comprises an air compressor, the end of the main pipe is fixedly connected and communicated with the air compressor, and a proportional solenoid valve is fixedly connected and communicated with the branch pipe.

[0007] Preferably, the preheating mechanism comprises a preheating furnace, a preheating cavity is formed in the interior of the preheating furnace, the annular track penetrates through the preheating cavity, two first workpiece openings are formed at both ends of the preheating furnace, the first workpiece openings are communicated with the preheating cavity, a support base is fixedly connected to the bottom surface of the preheating furnace, an electric heating plate is fixedly connected to the top surface and the bottom surface of the preheating cavity, a first electric heater is fixedly connected to the outer side wall of the preheating furnace, and the first electric heater is electrically connected with the electric heating plate.

[0008] Preferably, a plurality of first upper U-shaped tubes are fixedly connected to the top surface of the preheating furnace, and a plurality of first lower U-shaped tubes are fixedly connected to the bottom surface of the preheating furnace. Both the first upper U-shaped tubes and the first lower U-shaped tubes are connected to the preheating chamber. A first fan unit is fixedly connected to the side wall of the preheating furnace. A plurality of first upper air pipes are fixedly connected to and connected to the top of the first fan unit, and the ends of the first upper air pipes are fixedly connected to and connected to the first upper U-shaped tubes. A plurality of first lower air pipes are fixedly connected to and connected to the bottom of the first fan unit, and the ends of the first lower air pipes are fixedly connected to and connected to the first lower U-shaped tubes.

[0009] Preferably, the plasticizing mechanism includes a heating furnace, a constant temperature furnace, and a buffer furnace. The heating furnace is fixedly connected to the constant temperature furnace, and the constant temperature furnace is fixedly connected to the buffer furnace. A bottom support is fixedly connected to the bottom surface of the heating furnace, the constant temperature furnace, and the buffer furnace. A heating chamber is formed inside the heating furnace, a constant temperature chamber is formed inside the constant temperature furnace, and a heat preservation chamber is formed inside the buffer furnace. The heating chamber is connected to the constant temperature chamber, and the constant temperature chamber is connected to the heat preservation chamber. An exhaust main pipe is provided on the side wall of the heating furnace and the constant temperature furnace. A regulating valve is fixedly connected to and connected to the exhaust main pipe. A plurality of first exhaust branch pipes and two second exhaust branch pipes are fixedly connected to and connected to the side wall of the exhaust main pipe. The ends of the first exhaust branch pipes are fixedly connected to the side wall of the heating furnace, and the ends of the second exhaust branch pipes are fixedly connected to the side wall of the constant temperature furnace. The first exhaust branch pipes are connected to the upper part of the heating chamber, and the second exhaust branch pipes are connected to the upper part of the constant temperature chamber.

[0010] Preferably, a gas-fired heat exchange plate is fixedly connected to the top and bottom surfaces of the heating chamber, the plasticizing mechanism further includes a gas-fired furnace, an electric heating tube is fixedly connected to the top and bottom surfaces of the constant temperature chamber, a second electric heater is fixedly connected to the side wall of the heating furnace, the second electric heater is electrically connected to the electric heating tube, the annular track passes through the heating chamber, the constant temperature chamber, and the heat preservation chamber, a second workpiece opening is opened at the end of the heating furnace, a third workpiece opening is opened at the end of the buffer furnace, the second workpiece opening is connected to the heating chamber, and the third workpiece opening is connected to the heat preservation chamber.

[0011] Preferably, a plurality of second upper U-shaped tubes are fixedly connected to the top surface of the heating furnace, a plurality of second lower U-shaped tubes are fixedly connected to the bottom surface of the heating furnace, a plurality of third upper U-shaped tubes are fixedly connected to the top surface of the constant temperature furnace, a plurality of third lower U-shaped tubes are fixedly connected to the bottom surface of the constant temperature furnace, a second fan unit is fixedly connected to the side walls of the heating furnace and the constant temperature furnace, a plurality of second upper air pipes and a plurality of third upper air pipes are fixedly connected to and connected to the top of the second fan unit, a plurality of second lower air pipes and a plurality of third lower air pipes are fixedly connected to and connected to the bottom of the second fan unit, a second upper air pipe is fixedly connected to and connected to a second upper U-shaped tube, a second lower air pipe is fixedly connected to and connected to a second lower U-shaped tube, a third upper air pipe is fixedly connected to and connected to a third upper U-shaped tube, a third lower air pipe is fixedly connected to and connected to a third lower U-shaped tube, the second upper U-shaped tubes and the second lower U-shaped tubes are connected to the heating chamber, and the third upper U-shaped tubes and the third lower U-shaped tubes are connected to the constant temperature chamber.

[0012] Preferably, the annular track, the sunken track, and the streamlined track have internal cavities, and the bottom of the annular track, the sunken track, and the streamlined track have bottom sliding openings. A suspension chain is slidably arranged inside the cavities. The top of the suspension column is horizontally slidably connected inside the bottom sliding opening. The top of the suspension column is fixedly connected to the bottom surface of the suspension chain. A transmission chamber is fixedly connected to the top surface of one side of the annular track. One end of the transmission chamber is horizontally rotatably sleeved with a shaft column. The other end of the transmission chamber is rotatably connected to a first driven sprocket. The shaft column is fixedly sleeved with a first driving sprocket inside the transmission chamber. A drive chain is sleeved on the first driving sprocket and the first driven sprocket. A top groove is formed on the top surface of the annular track at the transmission chamber position. The drive chain meshes with the top surface of the suspension chain. A servo reduction motor is fixedly connected to the top surface of the transmission chamber. A second driving sprocket is fixedly connected to the shaft end of the servo reduction motor. The shaft column is fixedly sleeved with a second driven sprocket outside the transmission chamber. A drive chain is sleeved on the second driving sprocket and the second driven sprocket.

[0013] Preferably, the bottom end of the suspension column is rotatably connected to a damping base column, the bottom end of the damping base column is fixedly connected to a side block, and a gear is fixedly sleeved on the damping base column. The lifting device structure also includes a top block, the top surfaces of the two uppermost first shielding blocks are fixedly connected to a first top bar, the bottom surface of the top block is fixedly connected to a first top bar, the top surfaces of the two uppermost second shielding blocks are fixedly connected to a second top bar, the center top surface of the second top bar is fixedly connected to a locking plate, a locking block is vertically slidably disposed on the side wall of the top block, a locking slot is opened in the middle side wall of the locking block, the locking slot is inserted into the locking plate, two T-slots are opened in the side wall of the top block, the T-slots are vertically slidably connected to a T-block, the T-block is fixedly connected to the end side wall of the locking block, and a spring is fixedly connected between the T-block and the top of the T-slot. The top surface of the top block is fixed to a mounting block, two guide posts are horizontally fixed to both sides of the side block, and an insertion post is horizontally fixed to the middle of the side wall of the side block. Two guide holes are opened on the mounting block, and an insertion hole is also opened on the mounting block. The guide holes are used to insert guide posts, and the insertion holes are used to insert insertion posts. A threaded head is fixed to the end of the insertion post, and a nut is threaded onto the threaded head. The bottom of the annular track is fixed to a first toothed plate at the preheating mechanism position, a second toothed plate at the plasticizing mechanism position, and a third toothed plate at the air-cooling channel position. The gear meshes with the first toothed plate, the second toothed plate, or the third toothed plate. Two fourth workpiece openings are opened at both ends of the air-cooling channel, and multiple support legs are fixed to the bottom of the annular track.

[0014] The present invention also provides a dip-coating method for a composite busbar dip-coating device, comprising the following steps: Step 1 Preheating: Install the busbar on the lifting structure, and send the busbar into the preheating mechanism through the ring track for preheating, heating the busbar to above the powder melting temperature; Step 2: Impregnation; The fluidized impregnation mechanism causes the plastic powder to form a fluidized state like a "boiling liquid" under the action of airflow. The preheated busbar passes through the fluidized powder in the fluidized impregnation mechanism to uniformly impregnate the powder, resulting in an impregnated busbar. Step 3 Plasticization: After impregnation, the busbar enters the plasticization mechanism and is heated in the heating furnace. Then, the temperature is maintained in the constant temperature furnace so that the powder coating on the busbar is heated to completely melt, flow and chemically solidify, forming the final continuous, smooth and dense insulation layer. Then, the busbar leaves the plasticization mechanism after being kept warm in the buffer furnace. Step 4 Cooling: The plasticized busbar enters the air-cooling channel for forced air cooling, which rapidly cools the busbar from high temperature to a touchable temperature, solidifies the coating and sets the shape, completing the dip coating process.

[0015] Compared with the prior art, the beneficial effects of the present invention are: The lifting device structure of this invention is used to install busbars. After the busbars are installed, the first and second shielding blocks automatically shield the exposed parts of the busbars, eliminating the need for shielding liquid or shielding sleeves. After dip coating is completed, the busbars can be directly removed, greatly improving overall efficiency. The fluidized impregnation mechanism of this invention uses multiple air chambers to input compressed air, allowing for individual adjustment of the input amount at different locations. Combined with sensors on the top or sidewall of the fluidized bed, this ensures uniform fluidization of the powder. This invention adds a pulse backflushing structure, which uses periodic pulse backflushing to break up agglomerated powder. An angled blower is also added for easily contaminated sidewall locations, preventing powder agglomeration and ensuring the best dip coating effect. Attached Figure Description

[0016] Figure 1 These are schematic diagrams of the main body structure in the first and second embodiments of the present invention; Figure 2 These are schematic diagrams of the structure at the suspended conveyor line in the first and second embodiments of the present invention; Figure 3 These are exploded structural diagrams of the lifting device structure in the first and second embodiments of the present invention; Figure 4 These are schematic diagrams of the cross-sectional structure of the lifting device in the first and second embodiments of the present invention; Figure 5 These are schematic diagrams of the cross-sectional structure of the transmission compartment in the first and second embodiments of the present invention; Figure 6 These are schematic diagrams of the fluidized impregnation mechanism in the first and second embodiments of the present invention; Figure 7 These are schematic diagrams of the cross-sectional structure of the fluidized impregnation mechanism in the first and second embodiments of the present invention; Figure 8 This is a schematic diagram of the preheating mechanism in the second embodiment of the present invention; Figure 9 This is a cross-sectional view of the preheating mechanism in the second embodiment of the present invention; Figure 10 This is a schematic diagram of the plasticizing mechanism in the second embodiment of the present invention; Figure 11 This is a schematic diagram of the structure on the other side of the plasticizing mechanism in the second embodiment of the present invention; Figure 12 This is a cross-sectional view of the plasticizing mechanism in the second embodiment of the present invention.

[0017] In the diagram: 1. Suspended conveyor line; 2. Preheating mechanism; 3. Fluidized impregnation mechanism; 4. Plasticizing mechanism; 5. Air-cooling channel; 11. Circular track; 12. Sinking rail; 13. Streamlined rail; 14. Lifting device structure; 15. Rail cavity; 16. Bottom sliding opening; 17. Suspension chain; 18. Suspension column; 19. Damping bottom column; 110. Side block; 111. Guide column; 112. Insert column; 113. Threaded head; 114. Nut; 115. Gear; 120. First toothed plate; 121. Second toothed plate; 122. Third toothed plate; 123. Support leg; 124. Transmission chamber; 125. Servo geared motor; 126. Shaft column; 127. First driving sprocket; 128. First driven sprocket; 29. Drive chain; 130. Second driving sprocket; 131. Second driven sprocket; 132. Transmission chain; 133. Top groove; 141. Top block; 142. Fixed clamp assembly; 143. Moving clamp assembly; 144. Mounting block; 145. Guide hole; 146. Insertion hole; 147. Locking block; 148. Locking port; 149. T-slot; 1410. T-block; 1411. Spring; 1421. First shielding block; 1422. First support rod; 1423. First top bar; 1424. Bottom width plate; 1431. Second shielding block; 1432. Second support rod; 1433. Second top bar; 1434. Bottom bar; 1435. Locking plate; 21. Preheating furnace; 22. Preheating chamber; 2 3. Heating plate; 24. First upper U-shaped tube; 25. First lower U-shaped tube; 26. First fan unit; 27. First upper air duct; 28. First lower air duct; 29. ​​First workpiece inlet; 210. Support base frame; 211. First electric heater; 31. Fluidized bed; 32. Fluidization chamber; 33. Microporous bed plate; 34. Air chamber; 35. Branch pipe; 36. Main pipe; 37. Air compressor; 38. Proportional solenoid valve; 39. Pulse backflush structure; 391. Backflush pipe; 392. Backflush head; 393. Air supply pipe; 394. Inlet pipe; 395. Support; 396. Compressed air tank; 397. Air inlet pipe; 398. Pulse valve; 399. Angled blower head; 41. Heating furnace; 42. Constant temperature unit 43. Furnace; 44. Buffer furnace; 45. Heating chamber; 46. Constant temperature chamber; 47. Insulation chamber; 48. Bottom support; 49. Exhaust main pipe; 40. First exhaust branch pipe; 410. Second exhaust branch pipe; 411. Regulating valve; 412. Second upper U-shaped pipe; 413. Second lower U-shaped pipe; 414. Third upper U-shaped pipe; 415. Third lower U-shaped pipe; 416. Second fan unit; 417. Second upper air duct; 418. Second lower air duct; 419. Third upper air duct; 420. Third lower air duct; 421. Gas heat exchange plate; 422. Gas furnace; 423. Electric heating tube; 424. Second workpiece opening; 425. Third workpiece opening; 426. Second electric heater; 51. Fourth workpiece opening. Detailed Implementation

[0018] 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.

[0019] Example 1: Please see Figures 1-7 This invention provides a technical solution: a composite busbar dip-coating device 7, comprising a suspended conveyor line 1, a preheating mechanism 2, a fluidized impregnation mechanism 3, a plasticizing mechanism 4, and an air-cooling channel 5. The suspended conveyor line 1 includes a ring track 11, with a recessed rail 12 at the bottom of one side of the ring track 11. Two streamlined rails 13 are fixed between the two ends of the recessed rail 12 and the ring track 11. Multiple lifting structures 14 are provided at the bottom of the ring track 11, the recessed rail 12, and the streamlined rails 13. Each lifting structure 14 includes a fixed clamping assembly 142 and a movable clamping assembly 143. The fixed clamping assembly 142 includes multiple first shielding blocks 1421. A first support rod 1422 is fixed between the sides of the multiple first shielding blocks 1421 away from the movable clamping assembly 143. The bottom surfaces of the two lowest first shielding blocks 1421 are fixed with a bottom width plate 1424. The moving clamp assembly 143 includes multiple second shielding blocks 1431. A second support rod 1432 is fixedly connected between the multiple second shielding blocks 1431 on the side away from the fixed clamp assembly 142. The bottom surfaces of the two lowest second shielding blocks 1431 are fixedly connected to bottom strips 1434. The bottom strips 1434 are rotatably connected to the side wall of the bottom width plate 1424. The lifting structure 14 is used to install the busbar. After the busbar is installed, the first shielding block 1421 and the second shielding block 1431 automatically shield the exposed parts of the busbar. This eliminates the need to use shielding liquid or shielding sleeves to shield these parts. After the dip coating is completed, the busbar can be directly removed, greatly improving the overall efficiency. When clamping the busbar, the first shielding block 1421 and the second shielding block 1431 have a certain gap with the busbar as compensation for the expansion during the preheating of the busbar. The gap is determined by the specific material of the busbar. The fluidized bed impregnation mechanism 3 includes a fluidized bed 31 located directly below the sinking rail 12. A fluidization chamber 32 is opened on the top surface of the fluidized bed 31, and a microporous bed plate 33 is fixedly connected to the bottom surface of the fluidized bed 32. Multiple air chambers 34 are fixedly connected inside the fluidized bed 31 below the microporous bed plate 33. The air chambers 34 are fixedly connected to the bottom surface of the microporous bed plate 33. Two pulse backflush structures 39 are provided on both sides of the top surface of the fluidized bed 31. Compressed air is input through the multiple air chambers 34, so that the input amount at different positions can be adjusted individually. With the help of sensors on the top or side wall of the fluidized bed 31, the powder is ensured to be fluidized uniformly. The pulse back-blowing structure 39 includes three back-blowing pipes 391, with multiple back-blowing heads 392 fixedly connected to and connected to the bottom surface of each back-blowing pipe 391. The pulse back-blowing structure 39 also includes an air supply pipe 393, with multiple inlet pipes 394 fixedly connected to and connected to the multiple back-blowing pipes 391. The pulse back-blowing structure 39 also includes a compressed air tank 396, with an air inlet pipe 397 fixedly connected to and connected to the end of the air inlet pipe 397. Multiple inclined blow heads 399 are fixedly connected to and connected to the bottom of the back-blowing pipes 391 near the air supply pipe 393. The inclined blow heads 399 are inclined towards the air supply pipe 393. The pulse back-blowing structure 39 uses a periodic pulse back-blowing method to break up the agglomerated powder. An inclined blow head 399 is also added for the side wall positions that are prone to contamination, thus avoiding powder agglomeration and ensuring the dip coating effect.

[0020] Example 2: Please see Figures 1-12 This is the second embodiment of the present invention, which is based on the previous embodiment. Multiple supports 395 are fixedly connected to the air supply pipe 393. The supports 395 are fixedly connected to the side wall of the fluidized bed 31. A pulse valve 398 is fixedly connected to and connected to the air inlet pipe 397. Multiple branch pipes 35 are fixedly embedded inside the bottom of the fluidized bed 31. The ends of the branch pipes 35 are fixedly connected to and connected to the air chamber 34. One end of the multiple branch pipes 35 located outside the fluidized bed 31 is fixedly connected to and connected to the main pipe 36. The fluidization impregnation mechanism 3 also includes an air compressor 37. The air compressor 37 is fixedly connected to and connected to the end of the main pipe 36. A proportional solenoid valve 38 is fixedly connected to and connected to the branch pipes 35.

[0021] The preheating mechanism 2 includes a preheating furnace 21, a preheating cavity 22 is opened inside the preheating furnace 21, an annular track 11 passes through the preheating cavity 22, two first workpiece openings 29 are opened at both ends of the preheating furnace 21, the first workpiece openings 29 are connected to the preheating cavity 22, a support frame 210 is fixedly connected to the bottom surface of the preheating furnace 21, electric heating plates 23 are fixedly connected to the top and bottom surfaces of the preheating cavity 22, a first electric heater 211 is fixedly connected to the outer wall of the preheating furnace 21, and the first electric heater 211 is electrically connected to the electric heating plate 23.

[0022] Multiple first upper U-shaped tubes 24 are fixed to the top surface of the preheating furnace 21, and multiple first lower U-shaped tubes 25 are fixed to the bottom surface of the preheating furnace 21. Both the first upper U-shaped tubes 24 and the first lower U-shaped tubes 25 are connected to the preheating chamber 22. A first fan unit 26 is fixed to the side wall of the preheating furnace 21. Multiple first upper air pipes 27 are fixed to and connected to the top of the first fan unit 26. The ends of the first upper air pipes 27 are fixed to and connected to the first upper U-shaped tubes 24. Multiple first lower air pipes 28 are fixed to and connected to the bottom of the first fan unit 26. The ends of the first lower air pipes 28 are fixed to and connected to the first lower U-shaped tubes 25. The preheating mechanism 2 realizes preheating and heats the busbar to the preset temperature.

[0023] Plasticizing mechanism 4 includes a heating furnace 41, a constant temperature furnace 42, and a buffer furnace 43. The heating furnace 41 is fixedly connected to the constant temperature furnace 42, and the constant temperature furnace 42 is fixedly connected to the buffer furnace 43. A bottom support 47 is fixedly connected to the bottom surface of the heating furnace 41, the constant temperature furnace 42, and the buffer furnace 43. A heating chamber 44 is formed inside the heating furnace 41, a constant temperature chamber 45 is formed inside the constant temperature furnace 42, and a heat preservation chamber 46 is formed inside the buffer furnace 43. The heating chamber 44 is connected to the constant temperature chamber 45, and the constant temperature chamber 45 is connected to the heat preservation chamber 46. The side walls of furnace 41 and constant temperature furnace 42 are provided with exhaust pipe 48. The exhaust pipe 48 is fixedly connected to and connected to regulating valve 411. The side walls of exhaust pipe 48 are fixedly connected to and connected to multiple first exhaust branch pipes 49 and two second exhaust branch pipes 410. The end of the first exhaust branch pipe 49 is fixedly connected to the side wall of heating furnace 41, and the end of the second exhaust branch pipe 410 is fixedly connected to the side wall of constant temperature furnace 42. The first exhaust branch pipe 49 is connected to the upper part of heating chamber 44, and the second exhaust branch pipe 410 is connected to the upper part of constant temperature chamber 45.

[0024] Gas heat exchange plates 421 are fixedly connected to the top and bottom surfaces of the heating chamber 44. The plasticizing mechanism 4 also includes a gas furnace 422. Electric heating tubes 423 are fixedly connected to the top and bottom surfaces of the constant temperature chamber 45. A second electric heater 426 is fixedly connected to the side wall of the heating furnace 41. The second electric heater 426 is electrically connected to the electric heating tube 423. The annular track 11 passes through the heating chamber 44, the constant temperature chamber 45, and the heat preservation chamber 46. A second workpiece port 424 is opened at the end of the heating furnace 41. A third workpiece port 425 is opened at the end of the buffer furnace 43. The second workpiece port 424 is connected to the heating chamber 44, and the third workpiece port 425 is connected to the heat preservation chamber 46.

[0025] Multiple second upper U-shaped pipes 412 are fixed to the top surface of the heating furnace 41, and multiple second lower U-shaped pipes 413 are fixed to the bottom surface of the heating furnace 41. Multiple third upper U-shaped pipes 414 are fixed to the top surface of the constant temperature furnace 42, and multiple third lower U-shaped pipes 415 are fixed to the bottom surface of the constant temperature furnace 42. A second fan unit 416 is fixed to the side walls of the heating furnace 41 and the constant temperature furnace 42. Multiple second upper air pipes 417 and multiple third upper air pipes 419 are fixed to and connected to the top of the second fan unit 416, and multiple second lower air pipes 418 and multiple third lower air pipes 420 are fixed to and connected to the bottom of the second fan unit 416. Duct 417 is fixedly connected to and connected to the second upper U-shaped pipe 412, duct 418 is fixedly connected to and connected to the second lower U-shaped pipe 413, duct 419 is fixedly connected to and connected to the third upper U-shaped pipe 414, duct 420 is fixedly connected to and connected to the third lower U-shaped pipe 415, duct 412 and duct 413 are connected to the heating chamber 44, duct 414 and duct 415 are connected to the constant temperature chamber 45, heating furnace 41 is used for heating the busbar, constant temperature furnace 42 is used for maintaining a stable temperature of the busbar, and buffer furnace 43 is used for temperature buffering of the busbar.

[0026] The circular track 11, the sunken track 12, and the streamlined track 13 have internal cavities 15. A bottom sliding opening 16 is provided at the bottom of the circular track 11, the sunken track 12, and the streamlined track 13. A suspension chain 17 is slidably installed within the cavity 15. The top of a suspension column 18 is horizontally slidably connected within the bottom sliding opening 16. The top of the suspension column 18 is fixed to the bottom surface of the suspension chain 17. A transmission chamber 124 is fixed to the top surface of one side of the circular track 11. One end of the transmission chamber 124 is horizontally rotatably sleeved with a shaft column 126. The other end of the transmission chamber 124 is rotatably connected to a first driven sprocket 128. The shaft column 126 is located inside the transmission chamber 124. A first drive sprocket 127 is fixedly mounted, and a drive chain 129 is mounted on the first drive sprocket 127 and the first driven sprocket 128. A top groove 133 is opened on the top surface of the annular track 11 at the position of the transmission chamber 124. The drive chain 129 is meshed with the top surface of the suspension chain 17. A servo reduction motor 125 is fixedly mounted on the top surface of the transmission chamber 124. A second drive sprocket 130 is fixedly mounted on the shaft end of the servo reduction motor 125. A shaft column 126 is fixedly mounted on the second driven sprocket 131 at the position outside the transmission chamber 124. A transmission chain 132 is mounted on the second drive sprocket 130 and the second driven sprocket 131.

[0027] The bottom end of the suspension column 18 is rotatably connected to the damping base column 19, the bottom end of the damping base column 19 is fixedly connected to the side block 110, and the gear 115 is fixedly sleeved on the damping base column 19. The lifting structure 14 also includes a top block 141. The top surfaces of the two uppermost first shielding blocks 1421 are fixedly connected to the first top bar 1423, the bottom surface of the top block 141 is fixedly connected to the first top bar 1423, the top surfaces of the two uppermost second shielding blocks 1431 are fixedly connected to the second top bar 1433, and the center top surface of the second top bar 1433 is fixedly connected to the locking plate. 1435, A locking block 147 is vertically slidably mounted on the side wall of the top block 141. A locking slot 148 is opened on the middle side wall of the locking block 147, and a locking plate 1435 is inserted into the locking slot 148. Two T-slots 149 are opened on the side wall of the top block 141, and T-blocks 1410 are vertically slidably connected to the T-slots 149. The T-blocks 1410 are fixed to the end side wall of the locking block 147. A spring 1411 is fixed between the top of the T-block 1410 and the top of the T-slots 149. A mounting block 144 is fixedly mounted on the top surface of the top block 141. Side block 1 Two guide posts 111 are horizontally fixed to both sides of the side block 110. A plug post 112 is horizontally fixed to the middle of the side wall of the side block 110. Two guide holes 145 are opened on the mounting block 144, and a plug hole 146 is also opened on the mounting block 144. The guide post 111 is inserted into the guide hole 145, and the plug post 112 is inserted into the plug hole 146. A threaded head 113 is fixed to the end of the plug post 112. The threaded head 113 is threaded to a nut 114. The bottom of the annular track 11 is located at the position of the preheating mechanism 2 and is fixed to the first toothed plate 120. The bottom of the annular track 11 is... The second toothed plate 121 is fixedly connected to the plasticizing mechanism 4. The bottom of the annular track 11 is fixedly connected to the third toothed plate 122 at the air-cooling channel 5. The gear 115 meshes with the first toothed plate 120, the second toothed plate 121 or the third toothed plate 122. Two fourth workpiece openings 51 are opened at both ends of the air-cooling channel 5. Multiple support legs 123 are fixedly connected to the bottom of the annular track 11. In this way, when the busbar enters the preheating mechanism 2, the plasticizing mechanism 4 and the air-cooling channel 5, it will rotate, making the heating and cooling more uniform.

[0028] Example 3: Please see Figures 1-12 This is the third embodiment of the present invention. Based on the above two embodiments, this embodiment provides a dip-coating method for a composite busbar dip-coating device, including the following steps: Step 1 Preheating: Install the busbar on the lifting structure 14, and send the busbar into the preheating mechanism 2 through the ring track 11 for preheating, heating the busbar to above the powder melting temperature; Step 2: Impregnation; The fluidized impregnation mechanism 3 causes the plastic powder to form a fluidized state like a "boiling liquid" under the action of airflow. The preheated busbar passes through the fluidized powder in the fluidized impregnation mechanism 3 to uniformly impregnate the powder, thus obtaining the impregnated busbar. Step 3 Plasticization: After impregnation, the busbar enters the plasticizing mechanism 4 and is heated in the heating furnace 41. Then, the temperature is maintained in the constant temperature furnace 42 so that the powder coating on the busbar is heated to completely melt, level and chemically solidify, forming the final continuous, smooth and dense insulation layer. Then, the busbar leaves the plasticizing mechanism 4 after being kept warm in the buffer furnace 43. Step 4 Cooling: The plasticized busbar enters the air-cooling channel 5 for forced air cooling, which rapidly cools the busbar from high temperature to a touchable temperature, solidifies the coating and sets the shape, completing the dip coating process.

[0029] The invention is used as follows: The busbar is installed on the lifting structure 14 and sent into the preheating mechanism 2 via the annular track 11 for preheating. The busbar is heated to above the powder melting temperature. The fluidized impregnation mechanism 3 causes the plastic powder to form a fluidized state like a "boiling liquid" under the action of airflow. The preheated busbar is uniformly impregnated with the fluidized powder in the fluidized impregnation mechanism 3 to obtain the impregnated busbar. The impregnated busbar enters the heating furnace 41 in the plasticizing mechanism 4 for heating, and then the temperature is maintained in the constant temperature furnace 42 so that the powder coating on the busbar is heated to complete melting, leveling and chemical curing, forming a final continuous, smooth and dense insulation layer. Then the busbar leaves the plasticizing mechanism 4 after being kept warm in the buffer furnace 43. The plasticized busbar enters the air cooling channel 5 for forced air cooling, so that the busbar is rapidly cooled from high temperature to a touchable temperature. Temperature, curing coating and shaping, completing dip coating; the lifting structure 14 of the present invention is used to install the busbar. After the busbar is installed, the first shielding block 1421 and the second shielding block 1431 automatically shield the exposed parts of the busbar, so there is no need to use shielding liquid or shielding sleeve to shield these parts. After dip coating is completed, the busbar can be directly removed, greatly improving the overall efficiency; the fluidized impregnation mechanism 3 of the present invention inputs compressed air through multiple air chambers 34, so the input amount at different positions can be adjusted individually. With the help of sensors on the top or side wall of the fluidized bed 31, the powder is ensured to be fluidized uniformly; the present invention adds a pulse backflushing structure 39, which uses periodic pulse backflushing to break up the agglomerated powder. An oblique blower 399 is also added for the side wall positions that are prone to contamination, so as to avoid powder agglomeration and ensure the dip coating effect.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A composite busbar dip-coating device, comprising a suspended conveyor line (1), a preheating mechanism (2), a fluidized bed dip-coating mechanism (3), a plasticizing mechanism (4), and an air-cooling channel (5), characterized in that: The suspended conveyor line (1) includes a circular track (11), with a sunken rail (12) at the bottom of one side of the circular track (11). Two streamlined rails (13) are fixed between the two ends of the sunken rail (12) and the circular track (11). Multiple lifting structures (14) are provided at the bottom of the circular track (11), the sunken rail (12), and the streamlined rails (13). Each lifting structure (14) includes a fixed clamping assembly (142) and a movable clamping assembly (143). The fixed clamping assembly (142) includes multiple first shielding blocks (1421). A first support rod (1422) is fixedly connected between the sides away from the moving clamp assembly (143). The bottom surfaces of the two lowest first shielding blocks (1421) are fixedly connected to a bottom width plate (1424). The moving clamp assembly (143) includes a plurality of second shielding blocks (1431). A second support rod (1432) is fixedly connected between the sides of the plurality of second shielding blocks (1431) away from the fixed clamp assembly (142). The bottom surfaces of the two lowest second shielding blocks (1431) are fixedly connected to a bottom strip (1434). The bottom strip (1434) is rotatably connected to the side wall of the bottom width plate (1424). The fluidized impregnation mechanism (3) includes a fluidized bed (31) located directly below the sinking rail (12). A fluidization cavity (32) is opened on the top surface of the fluidized bed (31). A microporous bed plate (33) is fixedly connected to the bottom surface of the fluidization cavity (32). Multiple air chambers (34) are fixedly connected inside the fluidized bed (31) below the microporous bed plate (33). The air chambers (34) are fixedly connected to the bottom surface of the microporous bed plate (33). Two pulse backflushing structures (39) are provided on both sides of the top surface of the fluidized bed (31). The pulse backflush structure (39) includes three backflush pipes (391), the bottom surface of which is fixedly connected to and connected to multiple backflush heads (392). The pulse backflush structure (39) also includes an air supply pipe (393), which is fixedly connected to and connected to multiple inlet pipes (394) with the multiple backflush pipes (391). The pulse backflush structure (39) also includes a compressed air tank (396), which is fixedly connected to and connected to an air inlet pipe (397). The end of the air inlet pipe (397) is fixedly connected to and connected to the air supply pipe (393). The bottom of the backflush pipe (391) near the air supply pipe (393) is fixedly connected to and connected to multiple oblique blow heads (399), which are inclined toward the air supply pipe (393).

2. The composite motherboard dip-coating device according to claim 1, characterized in that: Multiple supports (395) are fixedly connected to the air supply pipe (393), the supports (395) are fixedly connected to the side wall of the fluidized bed (31), the air inlet pipe (397) is fixedly connected to and connected to the pulse valve (398), multiple branch pipes (35) are fixedly embedded inside the bottom of the fluidized bed (31), the ends of the branch pipes (35) are fixedly connected to and connected to the air chamber (34), the multiple branch pipes (35) are located outside the fluidized bed (31) and are fixedly connected to and connected to the main pipe (36), the fluidization impregnation mechanism (3) also includes an air compressor (37), the air compressor (37) is fixedly connected to and connected to the end of the main pipe (36), and the branch pipes (35) are fixedly connected to and connected to the proportional solenoid valve (38).

3. The composite motherboard dip-coating device according to claim 1, characterized in that: The preheating mechanism (2) includes a preheating furnace (21), a preheating cavity (22) is opened inside the preheating furnace (21), the annular track (11) passes through the preheating cavity (22), two first workpiece openings (29) are opened at both ends of the preheating furnace (21), the first workpiece openings (29) are connected to the preheating cavity (22), the bottom surface of the preheating furnace (21) is fixedly connected to the support frame (210), the top and bottom surfaces of the preheating cavity (22) are both fixedly connected to the heating plate (23), the outer wall of the preheating furnace (21) is fixedly connected to the first electric heater (211), and the first electric heater (211) is electrically connected to the heating plate (23).

4. The composite motherboard dip-coating device according to claim 3, characterized in that: The top surface of the preheating furnace (21) is fixed with multiple first upper U-shaped tubes (24), and the bottom surface of the preheating furnace (21) is fixed with multiple first lower U-shaped tubes (25). The first upper U-shaped tubes (24) and the first lower U-shaped tubes (25) are both connected to the preheating chamber (22). The side wall of the preheating furnace (21) is fixed with a first fan unit (26). The top of the first fan unit (26) is fixed with and connected to multiple first upper air pipes (27). The end of the first upper air pipes (27) is fixed with and connected to the first upper U-shaped tubes (24). The bottom of the first fan unit (26) is fixed with and connected to multiple first lower air pipes (28). The end of the first lower air pipes (28) is fixed with and connected to the first lower U-shaped tubes (25).

5. The composite motherboard dip-coating device according to claim 1, characterized in that: The plasticizing mechanism (4) includes a heating furnace (41), a constant temperature furnace (42), and a buffer furnace (43). The heating furnace (41) is fixedly connected to the constant temperature furnace (42), and the constant temperature furnace (42) is fixedly connected to the buffer furnace (43). The bottom support (47) is fixedly connected to the bottom surfaces of the heating furnace (41), the constant temperature furnace (42), and the buffer furnace (43). A heating chamber (44) is opened inside the heating furnace (41), a constant temperature chamber (45) is opened inside the constant temperature furnace (42), and a heat preservation chamber (46) is opened inside the buffer furnace (43). The heating chamber (44) is connected to the constant temperature chamber (45), and the constant temperature chamber (45) is connected to the heat preservation chamber. (46) The side walls of the heating furnace (41) and the constant temperature furnace (42) are provided with exhaust pipe (48). The exhaust pipe (48) is fixedly connected to and connected to the regulating valve (411). The side wall of the exhaust pipe (48) is fixedly connected to and connected to multiple first exhaust branch pipes (49) and two second exhaust branch pipes (410). The end of the first exhaust branch pipe (49) is fixedly connected to the side wall of the heating furnace (41), and the end of the second exhaust branch pipe (410) is fixedly connected to the side wall of the constant temperature furnace (42). The first exhaust branch pipe (49) is connected to the upper part of the heating chamber (44), and the second exhaust branch pipe (410) is connected to the upper part of the constant temperature chamber (45).

6. The composite motherboard dip-coating device according to claim 5, characterized in that: The heating chamber (44) is fixedly connected to the top and bottom surfaces with a gas heat exchange plate (421). The plasticizing mechanism (4) also includes a gas furnace (422). The constant temperature chamber (45) is fixedly connected to the top and bottom surfaces with an electric heating tube (423). The heating furnace (41) is fixedly connected to the side wall with a second electric heater (426). The second electric heater (426) is electrically connected to the electric heating tube (423). The annular track (11) passes through the heating chamber (44), the constant temperature chamber (45), and the heat preservation chamber (46). The heating furnace (41) has a second workpiece port (424) at its end. The buffer furnace (43) has a third workpiece port (425) at its end. The second workpiece port (424) is connected to the heating chamber (44). The third workpiece port (425) is connected to the heat preservation chamber (46).

7. A composite motherboard dip-coating device according to claim 6, characterized in that: The top surface of the heating furnace (41) is fixed with multiple second upper U-shaped tubes (412), the bottom surface of the heating furnace (41) is fixed with multiple second lower U-shaped tubes (413), the top surface of the constant temperature furnace (42) is fixed with multiple third upper U-shaped tubes (414), the bottom surface of the constant temperature furnace (42) is fixed with multiple third lower U-shaped tubes (415), the side walls of the heating furnace (41) and the constant temperature furnace (42) are fixed with a second fan unit (416), the top of the second fan unit (416) is fixed with and connected to multiple second upper air pipes (417) and multiple third upper air pipes (419), and the bottom of the second fan unit (416) is fixed with and connected to multiple second upper air pipes (417) and multiple third upper air pipes (419). The second upper air duct (417) is fixed and connected to the second upper U-shaped pipe (412), the second lower air duct (418) is fixed and connected to the second lower U-shaped pipe (413), the third upper air duct (419) is fixed and connected to the third upper U-shaped pipe (414), the third lower air duct (420) is fixed and connected to the third lower U-shaped pipe (415), the second upper U-shaped pipe (412) and the second lower U-shaped pipe (413) are connected to the heating chamber (44), and the third upper U-shaped pipe (414) and the third lower U-shaped pipe (415) are connected to the constant temperature chamber (45).

8. The composite motherboard dip-coating device according to claim 1, characterized in that: The annular track (11), the sunken track (12), and the streamlined track (13) have internal rail cavities (15). Bottom sliding openings (16) are provided at the bottom of the annular track (11), the sunken track (12), and the streamlined track (13). A suspension chain (17) is slidably installed inside the rail cavity (15). The top of a suspension column (18) is horizontally slidably connected inside the bottom sliding opening (16). The top of the suspension column (18) is fixed to the bottom surface of the suspension chain (17). A transmission chamber (124) is fixedly connected to the top surface of one side of the annular track (11). One end of the transmission chamber (124) is horizontally rotatably sleeved with a shaft column (126). The other end of the transmission chamber (124) is internally rotatably connected to a first driven sprocket (128). The shaft column (126) is located within the transmission chamber (124). 4) The first drive sprocket (127) is fixedly sleeved inside the drive sprocket (127) and the first driven sprocket (128) are sleeved with a drive chain (129). The top surface of the annular track (11) is provided with a top groove (133) at the position of the transmission chamber (124). The drive chain (129) is meshed with the top surface of the suspension chain (17). The top surface of the transmission chamber (124) is fixedly connected with a servo reduction motor (125). The shaft end of the servo reduction motor (125) is fixedly connected with a second drive sprocket (130). The shaft column (126) is fixedly sleeved with a second driven sprocket (131) at the position outside the transmission chamber (124). The second drive sprocket (130) and the second driven sprocket (131) are sleeved with a transmission chain (132).

9. A composite motherboard dip-coating device according to claim 8, characterized in that: The bottom end of the suspension column (18) is rotatably connected to the damping base column (19), the bottom end of the damping base column (19) is fixedly connected to the side block (110), and the damping base column (19) is fixedly fitted with a gear (115). The lifting structure (14) also includes a top block (141). The top surfaces of the two uppermost first shielding blocks (1421) are fixedly connected to the first top bar (1423), the bottom surfaces of the top block (141) are fixedly connected to the first top bar (1423), and the top surfaces of the two uppermost second shielding blocks (1431) are fixedly connected to the second top bar (1433). A locking plate (1435) is fixed to the top surface of the top block (141). A locking block (147) is vertically slidably disposed on the side wall of the top block (141). A locking slot (148) is opened on the middle side wall of the locking block (147). The locking plate (1435) is inserted into the locking slot (148). Two T-slots (149) are opened on the side wall of the top block (141). T-slots (149) are vertically slidably connected to T-blocks (1410). T-blocks (1410) are fixed to the end side wall of the locking block (147). A spring (1411) is fixed between the top of the T-block (1410) and the top of the T-slots (149). The top surface of the top block (141) is fixed to the mounting block (144). Two guide posts (111) are horizontally fixed to both sides of the side block (110). A plug post (112) is horizontally fixed to the middle of the side wall of the side block (110). Two guide holes (145) are opened on the mounting block (144). A plug hole (146) is also opened on the mounting block (144). The guide post (111) is inserted into the guide hole (145). The plug post (112) is inserted into the plug hole (146). A threaded head (113) is fixed to the end of the plug post (112). The threaded head (113) is threaded to a nut (114). The bottom of the annular track (11) is fixed to the first toothed plate (120) at the position of the preheating mechanism (2), the bottom of the annular track (11) is fixed to the second toothed plate (121) at the position of the plasticizing mechanism (4), the bottom of the annular track (11) is fixed to the third toothed plate (122) at the position of the air cooling channel (5), the gear (115) meshes with the first toothed plate (120), the second toothed plate (121) or the third toothed plate (122), two fourth workpiece openings (51) are opened at both ends of the air cooling channel (5), and multiple support legs (123) are fixed to the bottom of the annular track (11).

10. A dip-coating method for the composite busbar dip-coating device according to any one of claims 1-9, characterized in that, Includes the following steps: Step 1 Preheating: Install the busbar on the lifting structure (14), and send the busbar into the preheating mechanism (2) through the ring track (11) for preheating, and heat the busbar to above the powder melting temperature; Step 2: Impregnation; The fluidized impregnation mechanism (3) causes the plastic powder to form a fluidized state like a "boiling liquid" under the action of airflow. The preheated busbar passes through the fluidized powder in the fluidized impregnation mechanism (3) to uniformly impregnate the powder and obtain the impregnated busbar. Step 3 Plasticization: After impregnation, the busbar enters the plasticizing mechanism (4) and is heated in the heating furnace (41). Then, the temperature is maintained in the constant temperature furnace (42) so that the powder coating on the busbar is heated to completely melt, level and chemically solidify, forming a final continuous, smooth and dense insulation layer. Then, the busbar leaves the plasticizing mechanism (4) after being kept warm in the buffer furnace (43). Step 4 Cooling: The plasticized busbar enters the air-cooling channel (5) for forced air cooling, so that the busbar is rapidly cooled from high temperature to a touchable temperature, the coating is cured and shaped, and the dip coating is completed.

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