High-precision intelligent identification, disassembly and recovery device for waste circuit boards

Abstract

The invention relates to the technical field of circuit board recovery, and discloses a high-precision waste circuit board intelligent identification, disassembly and recovery device, which comprises a heating furnace, a motor, a motor and a control system, the screening box is located on one side of the heating furnace, internally provided with a vibrating screen plate and used for receiving the circuit boards discharged by the heating furnace; the conveying frame is used for receiving and conveying the circuit boards treated by the screening box; and the auxiliary mechanism is installed on one side of the screening box and comprises a first fan and an air inlet frame, the air inlet frame is located on the two sides of the interior of the conveying frame, and the input end of the first fan communicates with the air inlet frame through a first air pipe and is used for conveying heat of the circuit board located in the conveying frame into the screening box to heat falling tin. The waste heat of the waste gas circuit board in the conveying frame can be pumped into the gas pipe I and the gas pipe II through the fan and guided into the screening box again, so that after the heat is in contact with tin, the phenomenon that the tin cannot be discharged due to blockage caused by solidification of the tin in the screening box can be avoided.

Description

Technical Field

[0001] The invention relates to the technical field of circuit board recycling, and in particular to a high-precision intelligent identification, disassembly and recycling device for discarded circuit boards. Background Art

[0002] Circuit board, full name is printed circuit board (PCB), is a kind of electronic component such as capacitors, resistors, chips, etc., which is connected to form a complete circuit and realize the transmission of electronic signals. It is the core component of electronic equipment. Due to its efficient and reliable structure, electronic equipment can be mass-produced and miniaturized, while ensuring the precise connection and operation of complex circuits. Therefore, it is widely used in various electronic products, such as mobile phones, computers, televisions, home appliances, etc.

[0003] Waste circuit boards refer to circuit boards (PCBs) in electronic devices that have lost their use value or have been eliminated. These circuit boards come from discarded electronic devices such as mobile phones, computers, televisions, and household appliances. With the accelerated replacement of electronic devices, the number of waste circuit boards is also growing rapidly. Waste circuit boards are classified as electronic waste (E-waste) and are an important part of electronic waste.

[0004] Since discarded circuit boards contain a large amount of harmful substances, such as heavy metals (lead, mercury, cadmium, etc.) and organic pollutants (such as brominated flame retardants), if these circuit boards are discarded or landfilled without proper treatment, they will cause pollution to the soil, water sources and atmosphere. In addition, discarded circuit boards contain a large amount of precious metals and other valuable materials, especially metals such as gold, silver, and copper. By recycling discarded circuit boards, we can reduce dependence on primary mineral resources and reduce the damage to the environment caused by mining. At the same time, discarded circuit boards usually contain many valuable electronic components, so the recycling of discarded circuit boards is of great significance.

[0005] In the recycling process of existing waste circuit boards, a heating furnace is usually used to heat them, and then the circuit boards are vibrated to separate the molten tin from the circuit boards. Finally, the staff removes the components on the circuit boards. However, during the vibrating screening process, the molten tin beads fall along the holes of the sieve plate, and the sieve plate is not heated. Therefore, after the tin contacts the sieve plate, the temperature will be transferred to the sieve plate, so the temperature of the tin will drop. When the temperature is too low, the tin will solidify on the sieve plate and cause blockage, which will affect the operation of the recycling device. Summary of the invention

[0006] In view of the shortcomings of the prior art, the present invention provides a high-precision intelligent identification, disassembly and recycling device for waste circuit boards, which solves the problem in the prior art that the temperature of tin will drop after being transferred to the sieve plate, and when the temperature is too low, the tin will solidify on the sieve plate and cause blockage, which will in turn affect the operation of the recycling device.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a high-precision waste circuit board intelligent identification, disassembly and recycling device, comprising:

[0008] A heating furnace, which is used to transfer the circuit board and heat the circuit board to melt the tin;

[0009] The screening box is located on one side of the heating furnace, and a vibrating screen plate is arranged inside the screening box to receive the circuit boards discharged from the heating furnace, vibrate the circuit boards to make the tin fall to the bottom of the screening box, and transport the processed circuit boards;

[0010] A conveying frame, which is located on one side of the screening box and is used to receive and convey the circuit boards processed by the screening box;

[0011] An auxiliary mechanism is installed on one side of the screening box, and the auxiliary mechanism includes a fan 1 and an air intake frame. The fan 1 is located outside the screening box, and the air intake frames are located on both sides of the inside of the conveying frame. The input end of the fan 1 is connected with the air intake frame through an air pipe 1, and the output end of the fan 1 is connected with the inner bottom of the screening box through an air pipe 2, so as to transport the heat of the circuit board in the conveying frame to the screening box to heat the fallen tin.

[0012] Preferably, the inner bottom of the screening box is provided with an inclined surface, an air inlet is opened on the higher side of the inclined surface, one end of the air pipe 2 is located in the air inlet, a discharge port is opened on the lower side, and a collecting box is arranged below the discharge port.

[0013] Preferably, a hopper is fixedly connected to the side of the screening box close to the heating furnace, and conveyor belts for conveying circuit boards are installed inside the heating furnace and the conveyor frame, and the conveyor belt in the heating furnace is higher than the height of the hopper, and the conveyor belt of the conveyor frame is lower than the height of the screen plate.

[0014] Preferably, mounting plates are fixedly connected to both sides of the inner top of the inner side wall of the screening box, motors are installed on the top surfaces of the mounting plates on both sides, transmission shafts are fixedly connected to the output ends of the motors on both sides, eccentric wheels are fixedly connected to the outer sides of the transmission shafts on both sides, the eccentric wheels on both sides are respectively in contact with both sides of the screen plate, and the top surface of the screen plate is in contact with the top surface of the inner wall of the screening box.

[0015] Preferably, the long diameter side of the eccentric wheel on one side contacts one side of the screen plate, and the short diameter side of the eccentric wheel on the other side contacts the other side of the screen plate.

[0016] Preferably, a heating box is fixedly connected to one side of the outer wall of the screening box, a heating pipe is installed inside the heating box, and both sides of the heating box are respectively connected to the input ends of air pipe 1 and fan 1.

[0017] Preferably, the top surface of the screening box is fixedly connected to a cover shell, the top surface of the cover shell is fixedly connected to an electric push rod, the output end of the electric push rod is fixedly connected to a support plate, the bottom of the support plate is fixedly connected to a plug, and the electric push rod is used to drive the support plate and the plug downward so that the plug enters the hole inside the screen plate.

[0018] Preferably, the support plate has a cavity inside, the outer wall of the insert tube is provided with an air outlet, the air outlet is communicated with the cavity, a fan 2 is installed on one side of the top surface of the cover shell, the input end of the fan 2 is fixedly connected with an air pipe 3, the bottom of the air pipe 3 is connected with an air pipe 4, the two sides of the air pipe 4 are respectively connected with the heating box and the input end of the fan 1, the output end of the fan 2 is fixedly connected with a connecting pipe, and the connecting pipe is communicated with the cavity inside the support plate.

[0019] Preferably, the diameter of the cannula is smaller than the diameter of the internal hole of the sieve plate, and the air outlet opening points to the edge of the sieve plate.

[0020] Preferably, an opening is provided on one side of the top of the screening box, the connecting pipe is in the opening, the diameter of the opening is larger than the diameter of the connecting pipe, and the connecting pipe is configured as a corrugated pipe.

[0021] Working principle: When in use, first place the waste gas circuit board at the entrance of the heating furnace. At this time, the conveyor belt inside the heating furnace can transport the waste gas circuit board, and the heating furnace can also heat the waste gas circuit board to melt the tin on the waste gas circuit board, and the heated waste gas circuit board will enter the screen plate along the hopper. At this time, the motors on both sides respectively drive the transmission shafts on both sides to rotate. At this time, the transmission shaft can drive the eccentric wheel to rotate, and the long diameter side and short diameter side of the eccentric wheel on both sides will alternately contact the two sides of the screen plate with the rotation of the transmission shaft, so that the screen plate can be driven to reciprocate inside the screening box, and then drive the waste gas circuit board to swing. At this time, the molten tin can enter the inclined surface inside the screening box along the holes on the screen plate, and with the swing of the screen plate, the waste gas circuit board can be gradually moved to the conveying rack. At this time, the conveyor belt inside the conveying rack can be used to discharge the waste gas circuit board, and after the tin falls on the inclined surface, its temperature will drop, and then it will melt. At this time, the fan is driven to pass the air inside the conveying rack through the air intake frame and air pipe one in turn. , fan 1 and air pipe 2 enter the screening box, and the exhaust circuit board inside the conveyor frame still has residual temperature, so this heat will come into contact with the tin on the inclined surface again, thus avoiding the solidification of the tin, and under the impact of the airflow, it will also drive the tin along the inclined surface into the discharge port and finally into the collection box, and when the temperature is insufficient, by driving the heating tube inside the heating box, the preheated airflow can be reheated at this time, so the temperature can be guaranteed to be too low, and when the use is over, stop the motor and fan 1, and drive the electric push rod at this time Push out the support plate and the insert tube. At this time, the insert tube will enter the holes on the screen plate, and then the tin accumulated in the holes can be pushed out. At the same time, drive the fan 2 and the heating tube. At this time, the airflow can enter the cavity of the support plate along the air inlet frame, air pipe 1, heating box, air pipe 4, fan 2 and connecting pipe. At this time, the airflow will impact the inner wall of the hole on the screen plate along the air outlet on the insert tube. At this time, the hot airflow will melt the tin adhered to the inner wall of the hole, so that it can be molten again, and then drip on the inclined surface, so as to complete the cleaning of the screen plate.

[0022] The present invention provides a high-precision waste circuit board intelligent identification, disassembly and recycling device. It has the following beneficial effects:

[0023] 1. The present invention can drive the fan to extract the waste heat of the exhaust circuit board in the conveying rack into the air pipe 1 and the air pipe 2, and redirect it into the screening box. Therefore, when the heat contacts the tin, it can avoid the solidification of the tin in the screening box to cause blockage, thereby causing the tin to be unable to be discharged.

[0024] 2. The present invention heats the airflow passing through the heating box and the heating tube inside the heating box, so the airflow entering the screening box can be heated, thereby avoiding the problem that the temperature of the airflow is too low and the tin cannot be melted.

[0025] 3. The present invention drives the electric push rod to push out the support plate and the insert tube, and the insert tube can be inserted into the holes in the sieve plate. At this time, the insert tube can push out the tin accumulated in the holes of the sieve plate and make it fall on the inclined surface inside the screening box, thereby avoiding the phenomenon that the sieve plate cannot work normally due to the accumulation of tin slag.

[0026] 4. The present invention drives the second fan and the heating tube, so that the hot air flow can enter the cavity inside the support plate along the third and fourth air tubes, and finally be discharged along the air outlet on the insert tube, and the opening of the air outlet faces the edge of the sieve plate, so that the inner wall of the hole in the sieve plate can be impacted, so that the tin adhered to the inner wall of the hole can be melted and impacted, so that the residual tin can be cleaned, thereby improving the cleaning effect of the sieve plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the internal structure of the screening box of the present invention;

[0029] Figure 3 It is a front sectional view of the screening box of the present invention;

[0030] Figure 4 This is a partial structural diagram of the sieve plate of the present invention;

[0031] Figure 5 This is a structural breakdown diagram of the cannula portion of the present invention;

[0032] Figure 6 It is a front cross-sectional view of the cannula of the present invention;

[0033] Figure 7 for Figure 6 A in the enlarged view;

[0034] Figure 8 It is a schematic diagram of the structure of the cannula part of the present invention.

[0035] Among them, 1. heating furnace; 2. screening box; 201. hopper; 202. inclined plane; 203. air inlet; 204. discharge port; 205. collecting box; 3. conveying rack; 4. auxiliary mechanism; 401. fan one; 402. air inlet frame; 403. air pipe one; 404. air pipe two; 405. heating box; 5. sieve plate; 501. mounting plate; 502. motor; 503. transmission shaft; 504. eccentric wheel; 6. cover; 601. electric push rod; 602. support plate; 603. intubation tube; 604. fan two; 605. air pipe three; 606. air pipe four; 607. connecting pipe; 608. cavity; 609. air outlet. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Please see attached Figure 1 , Figure 2 , Figure 4 and Figure 5 The embodiment of the present invention provides a high-precision waste circuit board intelligent identification, disassembly and recycling device, comprising: a heating furnace 1, which is used to transmit circuit boards and heat the circuit boards to melt tin; a screening box 2, which is located on one side of the heating furnace 1 and is provided with a vibrating screen plate 5 inside, which is used to receive the circuit boards discharged from the heating furnace 1, vibrate the circuit boards to make the tin fall to the bottom of the screening box 2, and transport the processed circuit boards; a conveying frame 3, which is located on one side of the screening box 2 and is used to receive the circuit boards processed by the screening box 2 And transport it; an auxiliary mechanism 4, which is installed on one side of the screening box 2, the auxiliary mechanism 4 includes a fan 401 and an air intake frame 402, the fan 401 is located outside the screening box 2, the air intake frame 402 is located on both sides of the inside of the conveying frame 3, the input end of the fan 401 is connected with the air intake frame 402 through the air pipe 403, and the output end of the fan 401 is connected with the inner bottom of the screening box 2 through the air pipe 2 404, which is used to transport the heat of the circuit board located in the conveying frame 3 to the screening box 2 to heat the fallen tin.

[0038] First, the waste circuit boards are placed in the heating furnace 1, where they can be heated and the tin can be melted. After melting, the waste circuit boards are transported to the screening box 2, and then the sieve plate 5 is vibrated to separate the melted tin on the waste circuit boards, and finally to the conveying rack 3, where the waste circuit boards are transported out, and the tin under vibration will fall into the screening box 2 to realize the collection of tin. During operation, after the waste circuit boards are discharged from the heating furnace 1, their temperature is relatively high. After passing through the sieve plate 5 and entering the conveying rack 3, there is still residual temperature on the waste circuit boards, so the air inside the conveying rack 3 can be heated. The gas inside the conveying rack 3 can be transported to the screening box 2 along the air pipe 1 403 and the air pipe 2 404 through the fan 401. At this time, the residual heat is guided to the tin collection area at the bottom of the screening box 2, and the hot air will come into contact with the tin, so it can be Ensure that the tin remains in a molten state and avoids solidification. Since the tin is in a flat shape after it drips into the screening box 2 after melting, it is also flat after solidification, so it is difficult to be discharged from the screening box 2. By reheating the dripping tin using the waste heat of the waste circuit board, the tin can be prevented from solidifying and flowing out from the inside of the screening box 2. Therefore, it can not only improve the separation efficiency of tin on the waste circuit board, but also ensure that the tin will not re-solidify due to temperature fluctuations during the tin separation process, thereby improving the continuity and stability of the recycling process, reducing the frequency of shutdowns for cleaning, and further reducing the complexity of operations and manual intervention. The external airflow will also enter the air pipe 403 along the air intake frame 402, thereby driving the airflow in the conveying rack 3, thereby cooling the waste circuit board to avoid burns caused by excessive temperature of the waste circuit board during manual transportation.

[0039] Please refer to the attached Figure 1 , Figure 2 , Figure 3 and Figure 5 The inner bottom of the screening box 2 is provided with an inclined surface 202, an air inlet 203 is provided on the higher side of the inclined surface 202, one end of the air pipe 204 is located in the air inlet 203, a discharge port 204 is provided on the lower side, and a collecting box 205 is provided below the discharge port 204. A hopper 201 is fixedly connected to the side of the screening box 2 close to the heating furnace 1, and conveyor belts for conveying circuit boards are installed inside the heating furnace 1 and the conveyor frame 3, and the conveyor belt in the heating furnace 1 is higher than the height of the hopper 201, and the conveyor belt of the conveyor frame 3 is lower than the height of the sieve plate 5.

[0040] When the tin falls, it will drip onto the inclined surface 202. Since the inclined surface 202 has a height difference, the molten tin can be better guided to fall. An air inlet 203 is provided on the higher side of the inclined surface 202. The air pipe 204 is connected to the inclined surface 202 through the air inlet 203, so that the air flow can smoothly enter the interior of the screening box 2 and generate a heat flow on the inclined surface 202 to further heat the falling tin and prevent it from cooling and solidifying. A discharge port 204 is provided on the lower side of the inclined surface 202. The molten tin flows along the inclined surface 202 to the discharge port 204. A special collection box 205 is provided below the discharge port 204 for centralized collection of tin, thereby ensuring efficient recovery of tin. In addition, the screening box 2 is close to the heating furnace 1. A hopper 201 is also fixedly connected to the side, and the hopper 201 is used to smoothly guide the circuit boards processed by the heating furnace 1 to the screening box 2 for further processing. At the same time, conveyor belts are installed inside the heating furnace 1 and the conveying rack 3, which are respectively used for the transmission of circuit boards, and the height of the conveyor belt inside the heating furnace 1 is designed to be slightly higher than the height of the hopper 201, so as to ensure that the waste circuit boards can slide smoothly when entering the hopper 201 from the heating furnace 1 without getting stuck. At the same time, the height of the conveyor belt on the conveying rack 3 is lower than the height of the screen plate 5, so as to ensure that the waste circuit boards after screening can be smoothly output from the screening box 2, and enter the next processing link or be collected through the conveying rack 3, thereby ensuring the smooth and efficient operation of the entire process.

[0041] Please refer to the attached Figure 1 , Figure 2 and Figure 4 The inner top sides of the inner side wall of the screening box 2 are fixedly connected with mounting plates 501, the top surfaces of the mounting plates 501 on both sides are installed with motors 502, the output ends of the motors 502 on both sides are fixedly connected with transmission shafts 503, the outer sides of the transmission shafts 503 on both sides are fixedly connected with eccentric wheels 504, the eccentric wheels 504 on both sides are in contact with both sides of the sieve plate 5, and the top surface of the sieve plate 5 is in contact with the top surface of the inner wall of the screening box 2. The long diameter side of the eccentric wheel 504 on one side is in contact with one side of the sieve plate 5, and the short diameter side of the eccentric wheel 504 on the other side is in contact with the other side of the sieve plate 5.

[0042] The motor 502 can be fixed by using the mounting plate 501, and the mounting plate 501 is located on both sides of the top of the screening box 2. The motor 502 is installed on the top surface of the mounting plate 501 on each side, and the output end of the motor 502 is connected to the transmission shaft 503 and the eccentric wheel 504. The long diameter part on one side of the eccentric wheel 504 contacts one side of the sieve plate 5, and the short diameter part on the other side contacts the other side of the sieve plate 5. The sieve plate 5 can be pushed out by the long diameter side, and the eccentric wheels 504 on both sides contact the sieve plate 5 alternately. Therefore, through the rotation movement of the eccentric wheel 504, the sieve plate 5 will produce reciprocating swing under the drive of the eccentric wheel 504, thereby driving the vibration of the sieve plate 5, thereby helping to vibrate and separate the tin on the circuit board from the holes of the sieve plate 5 and discharge it into the collection area below.

[0043] Please refer to the attached Figure 1 , Figure 2 and Figure 5 A heating box 405 is fixedly connected to one side of the outer wall of the screening box 2, a heating pipe is installed inside the heating box 405, and both sides of the heating box 405 are respectively connected to the input ends of the air pipe 403 and the fan 401.

[0044] When the waste heat of the exhaust circuit board on the conveying rack 3 re-enters the screening box 2, the heating tube can be driven to provide additional heat to the airflow in the screening box 2, thereby further heating the airflow, thereby ensuring that the tin remains in a molten state while flowing down the inclined surface 202, preventing cooling and solidification during the screening process, thereby effectively improving the recovery efficiency.

[0045] Please refer to the attached Figure 1 , Figure 2 and Figure 5 The top surface of the screening box 2 is fixedly connected to a cover shell 6, the top surface of the cover shell 6 is fixedly connected to an electric push rod 601, the output end of the electric push rod 601 is fixedly connected to a support plate 602, the bottom of the support plate 602 is fixedly connected to a plug 603, and the electric push rod 601 is used to drive the support plate 602 and the plug 603 to move downward, so that the plug 603 enters the hole inside the screen plate 5.

[0046] After the sieve plate 5 is used to separate the molten tin from the waste circuit board, the conveyor rack 3 will discharge the waste circuit board. Finally, the operator can disassemble the electronic components on the waste circuit board. The tin will fall from the holes on the sieve plate 5, so part of the tin will accumulate in the holes of the sieve plate 5. Therefore, when the sieve plate 5 is blocked, the electric push rod 601 is driven to push out the support plate 602 and the insert tube 603. At this time, the insert tube 603 will enter the holes of the sieve plate 5, and then the tin accumulated in the holes can be pushed out, so the sieve plate 5 can be cleaned, thereby avoiding the phenomenon that the tin cannot be discharged.

[0047] Please refer to the attached Figure 1 , Figure 2 , Figure 6 , Figure 7 and Figure 8 The support plate 602 has a cavity 608 inside, and the outer wall of the insert pipe 603 is provided with an air outlet 609, which is connected to the cavity 608. A fan 2 604 is installed on one side of the top surface of the housing 6, and the input end of the fan 2 604 is fixedly connected to the air pipe 3 605, and the bottom of the air pipe 3 605 is connected to the air pipe 4 606, and the two sides of the air pipe 4 606 are respectively connected to the heating box 405 and the input end of the fan 1 401, and the output end of the fan 2 604 is fixedly connected to the connecting pipe 607, and the connecting pipe 607 is connected to the cavity 608 inside the support plate 602. The diameter of the insert pipe 603 is smaller than the diameter of the hole inside the sieve plate 5, and the opening of the air outlet 609 points to the edge of the sieve plate 5. An opening is provided on one side of the top of the screening box 2, and the connecting pipe 607 is in the opening, and the diameter of the opening is larger than the diameter of the connecting pipe 607, and the connecting pipe 607 is set as a corrugated pipe.

[0048] When the cannula 603 enters the sieve plate 5, the fan 2 604 is driven to transport the airflow in the conveying frame 3 along the air pipe 1 403 and the air pipe 2 404 to the heating box 405, and then enters the fan 2 604 through the air pipe 4 606 and the air pipe 3 605, and finally enters the cavity 608 and the cannula 603 along the connecting pipe 607. The outer wall of the cannula 603 is provided with an air outlet 609, and the air outlet 609 is connected with the airflow inside the support plate 602 through the cavity 608. Therefore, when the airflow enters the cavity 608 of the support plate 602, it can be evenly distributed through the air outlet 609. The hot air is discharged around the insert tube 603, and the diameter of the insert tube 603 is smaller than the diameter of the internal hole of the sieve plate 5, which can ensure that the insert tube 603 can be inserted into the hole of the sieve plate 5, and the opening direction of the air outlet 609 points to the edge of the sieve plate 5. Therefore, after the hot air flow is discharged from the air outlet 609, it can impact the inner wall of the hole of the sieve plate 5, so the tin remaining on the inner wall of the hole can be cleaned, and the connecting pipe 607 adopts the design of a bellows, so that it has good flexibility and adjustability while transmitting airflow, so that the connecting pipe 607 can be moved in coordination with the support plate 602.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. High-precision waste circuit board intelligent identification, disassembly and recycling device, characterized by: include: A heating furnace (1) is used to transfer the circuit board and heat the circuit board to melt the tin; The screening box (2) is located on one side of the heating furnace (1), and is provided with a vibrating screen plate (5) inside the screening box, which is used to receive the circuit boards discharged from the heating furnace (1), vibrate the circuit boards so that the tin falls to the bottom of the screening box (2), and transport the processed circuit boards; A conveying frame (3), which is located on one side of the screening box (2) and is used to receive and convey the circuit boards processed by the screening box (2); An auxiliary mechanism (4) is installed on one side of the screening box (2), and the auxiliary mechanism (4) includes a fan (401) and an air intake frame (402). The fan (401) is located outside the screening box (2), and the air intake frame (402) is located on both sides of the inside of the conveying frame (3). The input end of the fan (401) is connected to the air intake frame (402) through an air pipe (403), and the output end of the fan (401) is connected to the inner bottom of the screening box (2) through an air pipe (404), so as to transport the heat of the circuit board located in the conveying frame (3) to the screening box (2) to heat the fallen tin.

2. The high-precision waste circuit board intelligent identification, disassembly and recycling device according to claim 1 is characterized in that: The inner bottom of the screening box (2) is provided with an inclined surface (202), an air inlet (203) is provided on the higher side of the inclined surface (202), one end of the air pipe 2 (404) is located in the air inlet (203), a discharge port (204) is provided on the lower side, and a collection box (205) is provided below the discharge port (204).

3. The high-precision waste circuit board intelligent identification, disassembly and recycling device according to claim 2 is characterized in that: A hopper (201) is fixedly connected to one side of the screening box (2) close to the heating furnace (1), and conveyor belts for conveying circuit boards are installed inside the heating furnace (1) and the conveying frame (3), and the conveyor belt inside the heating furnace (1) is higher than the height of the hopper (201), and the conveyor belt of the conveying frame (3) is lower than the height of the screen plate (5).

4. The high-precision waste circuit board intelligent identification, disassembly and recycling device according to claim 1 is characterized in that: Mounting plates (501) are fixedly connected to both sides of the inner top of the inner side wall of the screening box (2), and motors (502) are installed on the top surfaces of the mounting plates (501) on both sides. Output ends of the motors (502) on both sides are fixedly connected to transmission shafts (503), and eccentric wheels (504) are fixedly connected to the outer sides of the transmission shafts (503) on both sides. The eccentric wheels (504) on both sides are in contact with both sides of the sieve plate (5) respectively, and the top surface of the sieve plate (5) is in contact with the top surface of the inner wall of the screening box (2).

5. The high-precision waste circuit board intelligent identification, disassembly and recycling device according to claim 4 is characterized in that: The long diameter side of the eccentric wheel (504) on one side contacts one side of the sieve plate (5), and the short diameter side of the eccentric wheel (504) on the other side contacts the other side of the sieve plate (5).

6. The high-precision waste circuit board intelligent identification, disassembly and recycling device according to claim 1 is characterized in that: A heating box (405) is fixedly connected to one side of the outer wall of the screening box (2), a heating pipe is installed inside the heating box (405), and both sides of the heating box (405) are respectively connected to the input ends of the air pipe 1 (403) and the fan 1 (401).

7. The high-precision waste circuit board intelligent identification, disassembly and recycling device according to claim 6 is characterized in that: The top surface of the screening box (2) is fixedly connected to a cover shell (6), the top surface of the cover shell (6) is fixedly connected to an electric push rod (601), the output end of the electric push rod (601) is fixedly connected to a support plate (602), the bottom of the support plate (602) is fixedly connected to a plug (603), and the electric push rod (601) is used to drive the support plate (602) and the plug (603) to move downward, so that the plug (603) enters the hole inside the screening plate (5).

8. The high-precision waste circuit board intelligent identification, disassembly and recycling device according to claim 7 is characterized in that: The support plate (602) has a cavity (608) inside, and the outer wall of the insert tube (603) is provided with an air outlet (609), and the air outlet (609) is connected to the cavity (608). A second fan (604) is installed on one side of the top surface of the cover shell (6), and the input end of the second fan (604) is fixedly connected to the third air pipe (605), and the bottom of the third air pipe (605) is connected to the fourth air pipe (606), and the two sides of the fourth air pipe (606) are respectively connected to the heating box (405) and the input end of the first fan (401), and the output end of the second fan (604) is fixedly connected to the connecting pipe (607), and the connecting pipe (607) is connected to the cavity (608) inside the support plate (602).

9. The high-precision intelligent identification, disassembly and recycling device for waste circuit boards according to claim 8 is characterized in that: The diameter of the insertion tube (603) is smaller than the diameter of the internal hole of the sieve plate (5), and the opening of the air outlet (609) points to the edge of the sieve plate (5).

10. The high-precision intelligent identification, disassembly and recycling device for waste circuit boards according to claim 8 is characterized in that: An opening is provided on one side of the top of the screening box (2), and the connecting pipe (607) is located in the opening. The diameter of the opening is larger than the diameter of the connecting pipe (607), and the connecting pipe (607) is configured as a corrugated pipe.

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