A hot air dismantling device for waste circuit board components

Abstract

This utility model relates to the technical field of electronic waste recycling, and in particular to a hot air dismantling device for waste circuit board components. A first set of circuit boards is fixed by a clamp assembly, and then a second set of circuit boards is placed inside a preheating and purification assembly. The operator uses one hand to operate a hot air stage assembly to locally heat the circuit boards on the clamp assembly, and the other hand to use tweezers to dismantle the heated components on the circuit boards. During the dismantling process, the fumes generated during heating are simultaneously purified, and the residual heat of the fumes preheats the second set of circuit boards, reducing the heating time for dismantling the second set of circuit boards. The device includes a workbench and a dust collector hood. The dust collector hood is located at the top of the workbench. It also includes a clamp assembly, a hot air assembly, and a preheating and purification assembly. The clamp assembly, hot air assembly, and dust purification assembly are respectively located at the top of the workbench. The clamp assembly is inside the dust collector hood, and the hot air assembly is used to locally heat the circuit boards.

Description

Technical Field

[0001] This utility model relates to the technical field of electronic waste recycling, and in particular to a hot air dismantling device for waste circuit board components. Background Technology

[0002] With the rapid pace of electronic product upgrades, a large amount of electronic waste (E-waste) is generated. Among these, the recycling and processing of waste printed circuit boards (PCBs) is one of the core aspects. PCBs contain a large amount of recyclable precious metals and reusable electronic components, which have high economic value and environmental significance.

[0003] In the prior art, patent document CN211321918U discloses a hot air disassembly device for electronic components on a circuit board. The device includes a base plate, a first side rod fixedly connected to the top side wall of the base plate, a first grooved plate fixedly connected to the right side wall of the first side rod, a hollow block fixedly connected to the inner cavity of the first grooved plate, an inner rod assembled in the inner cavity of the side plate, and a second grooved plate fixedly connected to the left side wall of the inner rod. The gap between the second grooved plate and the first grooved plate is opened, and the circuit board is placed in the inner cavity of the first grooved plate. The second grooved plate is then fastened to the first grooved plate, and the hot air stage body is attached to the hollow block. The circuit board is disassembled through the hot air stage body. The disassembled solder flows out through the through holes of the first and second grooved plates and drips into the inner cavity of a collection box. During disassembly, the circuit board can be shielded to prevent electronic components from splashing and hindering overall collection.

[0004] During use, it was found that the aforementioned device heats the entire circuit board via the hot air stage, resulting in poor heat distribution uniformity and a tendency for localized overheating. Overheating can damage valuable reusable components such as ICs, capacitors, and connectors, reducing their recycling value and reuse rate. Furthermore, uneven heating can cause localized carbonization or blistering of the PCB substrate, rendering previously repairable or recyclable copper foil completely unusable. Additionally, the direct emission of harmful gases generated during the superdegradation process results in poor environmental performance. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a hot air dismantling device for waste circuit board components.

[0006] This utility model discloses a hot air dismantling device for waste circuit board components, including a workbench and an air collection hood. The air collection hood is located on the top of the workbench. The device also includes a clamping assembly, a hot air assembly, and a preheating and purification assembly. The clamping assembly, hot air assembly, and flue gas purification assembly are respectively located on the top of the workbench. The clamping assembly is inside the air collection hood. The hot air assembly is used to locally heat the circuit board, and the preheating and purification assembly is used to purify the harmful gases generated during the heating of the circuit board while preheating the circuit board. In use, a first set of circuit boards is fixed using the clamping assembly, and then a second set of circuit boards is placed inside the preheating and purification assembly. The operator operates the hot air assembly with one hand. One hand heats the circuit board on the fixture assembly locally, while the other hand uses tweezers to disassemble the heated components on the circuit board. During disassembly, the preheating and purification assembly is activated, which draws air from inside the air collection hood. The hot air blown into the air collection hood by the hot air assembly, together with the outside cold air, preheats the second set of circuit boards and then purifies the flue gas. By selectively heating the components on the circuit board locally, damage to various components is reduced, and the recycling value and reuse rate are improved. At the same time, the flue gas generated during the heating process is purified, and the residual heat of the flue gas is used to preheat the second set of circuit boards, reducing the heating time for disassembling the second set of circuit boards.

[0007] Preferably, the clamping assembly includes a base plate, a fixing plate, a fixing block, a spring, a locking block, and a square rod. The workbench is topped with a base plate, and a set of fixing plates and a set of fixing blocks are respectively set on the top of the base plate. A set of square rods is fixedly arranged between the fixing plates and the fixing blocks. The locking block is slidably connected to the square rods. The spring is fitted onto the outside of the square rods between the fixing blocks and the locking blocks. In use, the locking block is moved away from the fixing plate, and then the circuit board is placed between the locking block and the fixing plate at the top of the square rods. Then, the spring force causes the locking block and the fixing plate to cooperate to clamp and fix the two sides of the circuit board. At the same time, the square rods partially suspend the circuit board. The operator operates the hot air assembly with one hand to blow hot air onto the components on the circuit board, and operates tweezers with the other hand to disassemble the components.

[0008] Preferably, the preheating and purification assembly includes a flue gas purification device, a first exhaust pipe, a preheating box, a box cover, a U-shaped clamping plate, a shaft pin, a lead screw, and a wing nut. The top of the workbench is respectively equipped with the flue gas purification device and the preheating box. The rear end of the air collecting hood is connected to the input end of the first exhaust pipe, the output end of the first exhaust pipe is connected to the right end of the preheating box, the input end of the flue gas purification device is connected to the left end of the preheating box, the top of the preheating box is hinged to the box cover, a U-shaped clamping plate is provided on the box cover, one end of the lead screw is hinged to the front end of the preheating box via a shaft pin, and the lead screw is threadedly connected to the wing nut. The second set of circuit boards is placed inside the preheating chamber, and the chamber cover is sealed to the top of the preheating chamber. Then, the lead screw, in cooperation with the shaft pin, enters the inside of the U-shaped clamp. The wing nut is rotated, so that the wing nut is pressed against the top of the U-shaped clamp, completing the locking of the chamber cover. The flue gas purification equipment is started, so that the outside air and the hot air generated by the hot air table assembly enter the preheating chamber through the No. 1 exhaust pipe and preheat the second set of circuit boards inside the preheating chamber. After that, they enter the flue gas purification equipment for purification, improving environmental protection and realizing the preheating of the circuit boards to be disassembled.

[0009] Preferably, the hot air table assembly includes a hot air table body, an air supply hose, a nozzle, and a positioning seat. The hot air table body is installed inside the positioning seat, and the positioning seat is installed on the top of the workbench. An air supply hose is provided at the output end of the hot air table body, and a nozzle is provided at the output end of the air supply hose. When the hot air table body is activated, hot air is sprayed out through the nozzle with the help of the air supply hose. The operator holds the nozzle with one hand to locally heat the components on the circuit board, improving the ease of operation.

[0010] Preferably, the lid also includes a handle, with a handle provided at the top of the lid; the operator can open and close the lid using the handle, improving ease of operation.

[0011] Preferably, it also includes a lever, with a lever provided at the top of the card block; the operator can move the card block by using the lever, improving convenience.

[0012] Preferably, it also includes a support frame, which is installed at the bottom of the preheating box; the operator places the second set of circuit boards on the support frame to improve the preheating efficiency.

[0013] Preferably, the outer wall of the nozzle is fitted with a heat insulation sleeve; the operator holds the nozzle through the heat insulation sleeve to avoid burns.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: In use, the first set of circuit boards is fixed by the clamp assembly, and then the second set of circuit boards is placed inside the preheating and purification assembly. The operator operates the hot air platform assembly with one hand to locally heat the circuit boards on the clamp assembly, and operates tweezers with the other hand to disassemble the heated components on the circuit boards. During the disassembly process, the preheating and purification assembly is activated, and the preheating and purification assembly draws air from inside the air collection hood. The hot air blown into the air collection hood by the hot air platform assembly, together with the outside cold air, preheats the second set of circuit boards and then purifies the flue gas. By locally heating the components of the circuit boards, damage to various components is reduced, and the recycling value and reuse rate are improved. At the same time, the flue gas generated during the heating process is purified, and the residual heat of the flue gas is used to preheat the second set of circuit boards, reducing the heating time for disassembling the second set of circuit boards. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the rear structure of this utility model;

[0016] Figure 2 yes Figure 1 A partially enlarged structural diagram of section A in the middle;

[0017] Figure 3 It is an enlarged structural diagram of the base plate and springs, etc.

[0018] Figure 4 It is an enlarged structural diagram of the support frame and preheating box, etc.

[0019] The following are labeled in the attached diagram: 1. Workbench; 2. Air hood; 3. Base plate; 4. Fixing plate; 5. Fixing block; 6. Spring; 7. Clamping block; 8. Flue gas purification equipment; 9. No. 1 exhaust pipe; 10. Preheating box; 11. Box cover; 12. U-shaped clamping plate; 13. Shaft pin; 14. Lead screw; 15. Wing nut; 16. Hot air table body; 17. Air supply hose; 18. Air nozzle; 19. Positioning seat; 20. Handle; 21. Toggle plate; 22. Support frame; 23. Square rod. Detailed Implementation

[0020] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0021] Example 1

[0022] like Figures 1 to 4As shown, this utility model discloses a hot air dismantling device for waste circuit board components, including a workbench 1 and an air collection hood 2. The top of the workbench 1 is provided with the air collection hood 2. It also includes a clamp assembly, a hot air assembly, and a preheating and purification assembly. The top of the workbench 1 is respectively provided with the clamp assembly, the hot air assembly, and the flue gas purification assembly. The clamp assembly is inside the air collection hood 2. The hot air assembly is used to locally heat the circuit board. The preheating and purification assembly is used to purify the harmful gases generated by heating the circuit board while preheating the circuit board.

[0023] like Figure 1 and Figure 3 As shown, the clamping assembly includes a base plate 3, a fixing plate 4, a fixing block 5, a spring 6, a locking block 7, and a square rod 23. The top of the workbench 1 is provided with a base plate 3. A set of fixing plates 4 and a set of fixing blocks 5 are respectively provided on the top of the base plate 3. A set of square rods 23 is fixedly provided between the fixing plates 4 and the fixing blocks 5. The locking block 7 is slidably connected to the square rod 23. The spring 6 is fitted on the outside of the square rod 23 between the fixing blocks 5 and the locking block 7.

[0024] like Figure 1 , Figure 2 and Figure 4 As shown, the preheating and purification assembly includes a flue gas purification device 8, a first exhaust pipe 9, a preheating box 10, a box cover 11, a U-shaped clamping plate 12, a shaft pin 13, a lead screw 14, and a wing nut 15. The top of the workbench 1 is respectively equipped with the flue gas purification device 8 and the preheating box 10. The rear end of the air collecting hood 2 is connected to the input end of the first exhaust pipe 9, the output end of the first exhaust pipe 9 is connected to the right end of the preheating box 10, the input end of the flue gas purification device 8 is connected to the left end of the preheating box 10, the top of the preheating box 10 is hinged to the box cover 11, the box cover 11 is equipped with a U-shaped clamping plate 12, one end of the lead screw 14 is hinged to the front end of the preheating box 10 through the shaft pin 13, and the lead screw 14 is threadedly connected to the wing nut 15.

[0025] In this embodiment, the second set of circuit boards is placed inside the preheating box 10, and the box cover 11 seals the top of the preheating box 10. Then, the lead screw 14, in cooperation with the shaft pin 13, enters the inner side of the U-shaped clamping plate 12. The wing nut 15 is rotated, so that the wing nut 15 is pressed against the top of the U-shaped clamping plate 12, completing the locking of the box cover 11 and moving the clamping block 7 away from the fixing plate 4. Then, the first set of circuit boards is placed between the clamping block 7 and the fixing plate 4 and placed at the top of the square rod 23. Then, the elastic force of the spring 6 makes the clamping block 7 cooperate with the fixing plate 4 to clamp and fix the two sides of the circuit board. At the same time, the square rod 23 makes the circuit board partially suspended. The operator operates the hot air table assembly with one hand to blow hot air on the components on the circuit board, and operates tweezers with the other hand to disassemble the components. The flue gas purification equipment 8 is started. The hot air sprayed from the nozzle 18 and the outside cold air enter the preheating box 10 through the first exhaust pipe 9 and preheat the second set of circuit boards inside the preheating box 10. Then, they enter the flue gas purification equipment 8 for purification.

[0026] Example 2

[0027] like Figures 1 to 4 As shown, this utility model discloses a hot air dismantling device for waste circuit board components, including a workbench 1 and an air collection hood 2. The top of the workbench 1 is provided with the air collection hood 2. It also includes a clamp assembly, a hot air assembly, and a preheating and purification assembly. The top of the workbench 1 is respectively provided with the clamp assembly, the hot air assembly, and the flue gas purification assembly. The clamp assembly is inside the air collection hood 2. The hot air assembly is used to locally heat the circuit board. The preheating and purification assembly is used to purify the harmful gases generated by heating the circuit board while preheating the circuit board.

[0028] like Figure 1 and Figure 3 As shown, the clamping assembly includes a base plate 3, a fixing plate 4, a fixing block 5, a spring 6, a locking block 7, and a square rod 23. The top of the workbench 1 is provided with a base plate 3. A set of fixing plates 4 and a set of fixing blocks 5 are respectively provided on the top of the base plate 3. A set of square rods 23 is fixedly provided between the fixing plates 4 and the fixing blocks 5. The locking block 7 is slidably connected to the square rod 23. The spring 6 is fitted on the outside of the square rod 23 between the fixing blocks 5 and the locking block 7.

[0029] like Figure 1 , Figure 2 and Figure 4As shown, the preheating and purification assembly includes a flue gas purification device 8, a first exhaust pipe 9, a preheating box 10, a box cover 11, a U-shaped clamping plate 12, a shaft pin 13, a lead screw 14, and a wing nut 15. The top of the workbench 1 is respectively equipped with the flue gas purification device 8 and the preheating box 10. The rear end of the air collecting hood 2 is connected to the input end of the first exhaust pipe 9, the output end of the first exhaust pipe 9 is connected to the right end of the preheating box 10, the input end of the flue gas purification device 8 is connected to the left end of the preheating box 10, the top of the preheating box 10 is hinged to the box cover 11, the box cover 11 is equipped with a U-shaped clamping plate 12, one end of the lead screw 14 is hinged to the front end of the preheating box 10 through the shaft pin 13, and the lead screw 14 is threadedly connected to the wing nut 15.

[0030] like Figure 1 As shown, the hot air table assembly includes a hot air table body 16, an air supply hose 17, a nozzle 18, and a positioning seat 19. The hot air table body 16 is installed inside the positioning seat 19, and the positioning seat 19 is installed on the top of the workbench 1. The output end of the hot air table body 16 is provided with an air supply hose 17, and the output end of the air supply hose 17 is provided with a nozzle 18.

[0031] It also includes a handle 20, a lever 21, and a support frame 22. The top of the box cover 11 is provided with a handle 20, the top of the locking block 7 is provided with a lever 21, and the bottom of the preheating box 10 is installed with a support frame 22.

[0032] In this embodiment, the second set of circuit boards is placed inside the preheating box 10, and the box cover 11 seals the top of the preheating box 10. Then, the lead screw 14, in cooperation with the shaft pin 13, enters the inner side of the U-shaped clamping plate 12. The wing nut 15 is rotated, thereby causing the wing nut 15 to press against the top of the U-shaped clamping plate 12, completing the locking of the box cover 11 and moving the clamping block 7 away from the fixing plate 4. Then, the first set of circuit boards is placed between the clamping block 7 and the fixing plate 4 at the top of the square rod 23. Then, the elastic force of the spring 6 causes the clamping block 7 to cooperate with the fixing plate 4 to clamp and fix the two sides of the circuit board. The square rod 23 partially suspends the circuit board, and the hot air platform 16 is activated, so that hot air is sprayed out through the nozzle 18 with the help of the air supply hose 17. The operator holds the nozzle 18 with one hand to locally heat the components on the circuit board, and uses tweezers with the other hand to disassemble the components. The flue gas purification equipment 8 is activated, and the hot air sprayed from the nozzle 18 and the outside cold air enter the preheating box 10 through the first exhaust pipe 9 and preheat the second set of circuit boards inside the preheating box 10. Then, it enters the flue gas purification equipment 8 for purification.

[0033] This utility model discloses a hot air dismantling device for waste circuit board components. The flue gas purification device 8 is a desktop stand-alone purifier with a suction function. Domestic brands such as Quick, Antaixin, or Baiguang can be used. The flue gas purification device 8 is existing technology and will not be described in detail again. Depending on the hot dismantling temperature of different components, the operator can adjust the temperature by selecting the adjustable air jet 16. The hot air table body 16 and the flue gas purification device 8 of this utility model are purchased from the market. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0034] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A waste circuit board component hot air disassembling device, comprising a workbench (1) and a wind collecting cover (2), the top end of the workbench (1) is provided with the wind collecting cover (2), characterized in that, It also includes a clamping assembly, a hot air assembly, and a preheating and purification assembly. The top of the workbench (1) is respectively provided with a clamping assembly, a hot air assembly, and a flue gas purification assembly. The clamping assembly is inside the air collection hood (2). The hot air assembly is used to heat the circuit board locally. The preheating and purification assembly is used to purify the harmful gases generated by heating the circuit board while preheating the circuit board.

2. The hot air disassembling device for components of waste circuit board according to claim 1, characterized in that, The clamp assembly includes a base plate (3), a fixing plate (4), a fixing block (5), a spring (6), a locking block (7), and a square rod (23). The workbench (1) is provided with a base plate (3) at its top. A set of fixing plates (4) and a set of fixing blocks (5) are respectively provided at the top of the base plate (3). A set of square rods (23) is fixedly provided between the fixing plates (4) and the fixing blocks (5). The locking block (7) is slidably connected to the square rods (23). The spring (6) is fitted on the outside of the square rods (23) between the fixing blocks (5) and the locking blocks (7).

3. The hot air disassembling device for components of waste circuit board according to claim 1, characterized in that, The preheating and purification assembly includes a flue gas purification device (8), a first exhaust pipe (9), a preheating box (10), a box cover (11), a U-shaped clamp (12), a shaft pin (13), a lead screw (14), and a wing nut (15). The top of the workbench (1) is respectively equipped with a flue gas purification device (8) and a preheating box (10). The rear end of the air collecting hood (2) is connected to the input end of the first exhaust pipe (9), the output end of the first exhaust pipe (9) is connected to the right end of the preheating box (10), the input end of the flue gas purification device (8) is connected to the left end of the preheating box (10), the top of the preheating box (10) is hinged to the box cover (11), a U-shaped clamp (12) is provided on the box cover (11), one end of the lead screw (14) is hinged to the front end of the preheating box (10) through the shaft pin (13), and the lead screw (14) is threadedly connected to the wing nut (15).

4. The hot air disassembling device for components of waste circuit board according to claim 1, characterized in that, The hot air table assembly includes a hot air table body (16), an air supply hose (17), a nozzle (18), and a positioning seat (19). The hot air table body (16) is installed inside the positioning seat (19), and the positioning seat (19) is installed on the top of the workbench (1). The output end of the hot air table body (16) is provided with an air supply hose (17), and the output end of the air supply hose (17) is provided with a nozzle (18).

5. The hot air disassembling device for components of waste circuit board according to claim 3, characterized in that, It also includes a handle (20), which is provided at the top of the lid (11).

6. The hot air disassembling device for components of waste circuit board according to claim 2, characterized in that, It also includes a lever (21), which is provided at the top of the card block (7).

7. The hot air disassembling device for components of waste circuit board according to claim 3, characterized in that, It also includes a support frame (22), which is installed at the bottom of the preheating box (10).

8. The hot air disassembling device for components of waste circuit board according to claim 4, characterized in that, The outer wall of the blower head (18) is fitted with a heat insulation sleeve.

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