Waste printed circuit board electronic component disassembling and soldering tin recycling integrated equipment

Abstract

The invention discloses a waste printed circuit board electronic component disassembling and soldering tin recycling integrated device, and relates to the technical field of circuit board recycling. The device comprises a separation cylinder, the inner wall of the separation cylinder is rotationally connected with a fixed cylinder through a bearing seat, and the surface of the fixed cylinder is fixedly connected with a screening cylinder; a separation mechanism is arranged in an inner cavity of the separation cylinder and comprises a knocking assembly arranged in the inner cavity of the separation cylinder. A screening mechanism is arranged at the bottom of the separation barrel and comprises a material blocking plate fixedly connected to the bottom of the separation barrel. A cam of the knocking assembly drives a flexible knocking block and a buffer spring to continuously and flexibly impact the screening barrel, the circuit board is prevented from being damaged, meanwhile, the soldering tin stripping rate is increased, a reciprocating lead screw of the swinging assembly drives a swinging plate to horizontally reciprocate, the circuit board is pushed to turn over, external heating equipment is matched, soldering tin is thoroughly melted, and the separation efficiency is improved; and the soldering tin stripping and recycling integrated effect is achieved.

Description

Technical Field

[0001] This invention belongs to the field of circuit board recycling technology, and in particular relates to an integrated device for dismantling electronic components from waste printed circuit boards and recycling solder. Background Technology

[0002] With the surge in electronic waste, efficient recycling of waste printed circuit boards (PCBs) has become a crucial link in resource recycling. Traditional recycling processes typically involve multiple steps: first, disassembling electronic components using hot air or infrared heating, and then separating solder through physical crushing and gravity sorting. This method suffers from problems such as dispersed equipment, high energy consumption, complex processes, and frequent manual intervention leading to low efficiency.

[0003] Existing integrated equipment still has significant shortcomings: low solder recovery rate: during gravity screening, solder easily adheres to the screen or the inner wall of the equipment, and the fixed amplitude of traditional vibrating screens makes it difficult to completely remove tiny solder particles; screen clogging: after the solder solidifies, it clogs the screen holes, requiring machine shutdown for cleaning, affecting continuous operation; safety risks: the high-temperature chamber requires manual loading / unloading, which can easily cause burns, and uneven heating of the circuit boards leads to incomplete disassembly. Therefore, we provide an integrated equipment for disassembling electronic components from waste printed circuit boards and recycling solder to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide an integrated device for dismantling electronic components from waste printed circuit boards and recycling solder. Through the structural cooperation of the separation mechanism, the screening mechanism and the automatic feeding mechanism, the problem of low separation and screening efficiency in the existing integrated devices for dismantling electronic components from waste printed circuit boards and recycling solder is solved.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution.

[0006] This invention relates to an integrated device for dismantling and recycling solder from waste printed circuit boards (PCBs). It includes a separation cylinder, with a fixed cylinder rotatably connected to its inner wall via a bearing seat. A screening cylinder is fixedly connected to the surface of the fixed cylinder. A separation mechanism is provided within the separation cylinder's inner cavity, comprising a striking component and a swinging component. A screening mechanism is located at the bottom of the separation cylinder, including a baffle plate fixedly connected to the bottom of the separation cylinder, a conveying and screening component located inside the baffle plate, a second conveying roller rotatably connected to the inner wall of the baffle plate via a bearing seat, and a clearing component located inside the second conveying roller. An automatic feeding mechanism is provided within the separation cylinder's inner cavity, comprising a drive shaft rotatably connected to the inner wall of the screening cylinder via a bearing seat, a drive gear ring located on the inner wall of the separation cylinder, and an opening / closing plate slidably connected to the inner wall of the screening cylinder.

[0007] The present invention is further configured such that the striking assembly includes a first toothed ring fixedly connected to the surface of the screening cylinder, a first gear meshing with the inner side of the first toothed ring, a first rotating shaft fixedly connected to the axis of the first gear, a cam fixedly connected to the surface of the first rotating shaft, a striking rod rotatably connected to the inner cavity of the separation cylinder via a mounting block and a pin, and a striking block fixedly connected to one side of the striking rod. The first toothed ring is fixedly connected to the surface of the screening cylinder and meshes with the first gear. The first rotating shaft drives the cam to rotate, pushing the striking block at the end of the striking rod to periodically strike the screening cylinder. The vibration causes the solder on the circuit board to loosen and fall off. The striking block has a built-in sliding groove and a first spring, and a striking wheel at the end to convert rigid impact into flexible vibration, avoiding damage to the circuit board.

[0008] The invention is further configured such that a groove is provided on one side of the striking block, a first spring is fixedly connected to the inner cavity of the groove, and a striking wheel is fixedly connected to the other end of the first spring. The striking wheel has a degree of freedom of rotation, which avoids interference between the rotation of the screening cylinder and the striking block during the striking process and improves the solder stripping efficiency.

[0009] The present invention is further configured such that the oscillating assembly includes a second toothed ring fixedly connected to the inner cavity of the separation cylinder by a mounting rod, a second gear meshing with the surface of the second toothed ring, a reciprocating lead screw fixedly connected to the shaft of the second gear, a threaded sleeve sleeved on the surface of the reciprocating lead screw, and an oscillating plate fixedly connected to the surface of the threaded sleeve. When the screening cylinder rotates, the second gear revolves around the second toothed ring, forcing the reciprocating lead screw to rotate. The reciprocating lead screw drives the oscillating plate to move horizontally back and forth through the threaded sleeve, pushing the circuit board to flip, ensuring uniform heating, improving the solder melting rate, and avoiding a decrease in the solder detachment rate due to uneven heating of the circuit board.

[0010] The present invention is further configured such that the conveying and screening assembly further includes a first synchronous wheel fixedly connected to the surface of the fixed cylinder, a second synchronous wheel connected to the first synchronous wheel via a synchronous belt drive, a first conveying roller fixedly connected to the second synchronous wheel, and a conveyor belt drivenly connected to the surface of the first conveying roller.

[0011] The invention is further configured such that the first conveying roller and the second conveying roller are connected by the conveyor belt, the surface of the conveyor belt is provided with screening holes, the horizontal height of the second conveying roller is higher than that of the first conveying roller, the second conveying roller has a hollow structure design, a collection box is provided on one side of the baffle plate, the first synchronous pulley drives the second synchronous pulley via the synchronous belt, driving the first conveying roller and the second conveying roller to drive the conveyor belt, the surface of the conveyor belt is provided with screening holes, and the inclined design (the second conveying roller is higher than the first conveying roller) extends the solder screening path by inclined conveying, which improves the recovery rate compared with gravity sliding, and the solder falls into the collection box through the screening holes.

[0012] The present invention is further configured such that the unblocking component includes a fixed shaft fixedly connected to one side of the baffle plate via a mounting plate, a first electromagnet fixedly connected to the surface of the fixed shaft, a second spring fixedly connected to the inner side of the second conveying roller, a second magnet fixedly connected to the other end of the second spring, and an unblocking rod fixedly connected to one side of the second magnet.

[0013] The invention is further configured such that the first electromagnet and the second magnet have opposite magnetic pole directions. The first electromagnet is arc-shaped. The repulsive force between the opposite magnetic poles of the first and second magnets can push the unblocking rod to move. When the second conveyor roller rotates, it drives the unblocking rod located in its inner cavity to rotate. When the second magnet at one end of the unblocking rod moves to a relative position, the repulsive force generated between it and the first magnet will compress the corresponding second spring, causing the unblocking rod to penetrate the screening holes on the surface of the conveyor belt. When it is misaligned with the second magnet, the unblocking rod resets under the action of the second spring, preventing the extension of the unblocking rod from affecting the conveyor belt transmission, and realizing real-time unblocking of the screening holes without stopping the machine, thus preventing blockage.

[0014] The invention is further configured such that one end of the drive shaft extends through the inner cavity of the screening cylinder and is fixedly connected to a third gear, the surface of which is meshed with a rack, one side of which is fixedly connected to the inner side of the opening and closing plate; the other end of the drive shaft extends through the outer side of the screening cylinder and is fixedly connected to a fourth gear; a sliding rod is slidably connected to the surface of the drive gear ring, one end of which is fixedly connected to the inner cavity of the separation cylinder; one side of the drive gear ring is rotatably connected to a bolt rod via a bearing seat, the other end of which extends through the outer side of the separation cylinder; the drive gear ring and the fourth gear are designed to be misaligned to prevent the drive gear from interfering with the fourth gear during normal operation of the screening cylinder; the inner cavity of the screening cylinder is fixed. A protective box is connected, which is fitted onto the surface of the third gear to prevent the circuit board from affecting the transmission of the third gear. When unloading is required, the drive gear ring is moved axially by rotating the bolt rod, so that it is on the same plane as the fourth gear. At this time, during the rotation of the fixed cylinder, the drive gear ring drives the opening and closing plate to slide through the fourth gear, drive shaft, third gear, and rack, which facilitates the discharge of materials. When feeding is required, the screening cylinder is exposed and the through slot is rotated to the top to open the feeding bin. The material in the feeding bin falls into the inner cavity of the screening cylinder under the action of gravity, realizing the automatic loading and unloading function. This solves the problems of low efficiency of existing manual feeding and the safety hazards caused by manual contact with the high-temperature cavity, and realizes continuous production.

[0015] The present invention is further configured such that a support base is fixedly connected to one side of the separation cylinder, a drive motor is fixedly connected to the top of the support base, the output shaft of the drive motor is fixedly connected to one end of the fixed cylinder, a feed hopper is provided at the top of the separation cylinder, a control box is fixedly connected to the right side of the support base, and a heating device is fixedly connected to the right side of the support base via a mounting rod. The main function of the heating device (existing equipment) is to inject a high-temperature flame into the inner cavity of the fixed cylinder to achieve the heating function.

[0016] The present invention has the following beneficial effects.

[0017] 1. This invention uses a cam-driven flexible striking block and buffer spring in the striking component to continuously and flexibly impact the screening cylinder, thereby avoiding damage to the circuit board and improving the solder stripping rate. The reciprocating screw of the swing component drives the swing plate to move horizontally back and forth, pushing the circuit board to flip. With the help of external heating equipment, the solder is completely melted, improving the separation efficiency and achieving the integrated effect of solder stripping and recycling.

[0018] 2. In this invention, the conveyor belt is inclined upward with the second conveyor roller higher than the first conveyor roller. The inclined conveyor extends the screening path, and the solder particles fall into the collection box through the screening holes, thereby improving the screening efficiency. The unblocking component uses the magnetic repulsion between the first electromagnet and the second magnet to push the unblocking rod to periodically penetrate the screening holes, so as to achieve unblocking without stopping the machine.

[0019] 3. This invention controls the opening and closing of the screening cylinder by axially displacing the drive gear ring through the bolt rod, thereby controlling the fourth gear and rack to open and close the plate. This avoids manual contact with the high-temperature cavity, and the mechanical linkage reuses the power of the drive motor, eliminating the need for additional electrical control components.

[0020] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0022] Figure 1 This is a three-dimensional diagram of an integrated equipment for dismantling electronic components from waste printed circuit boards and recycling solder.

[0023] Figure 2 This is a cross-sectional view of the separation cylinder in an integrated equipment for dismantling electronic components from waste printed circuit boards and recycling solder.

[0024] Figure 3 This is a schematic diagram of a conveying and screening component in an integrated equipment for dismantling waste printed circuit board electronic components and recycling solder.

[0025] Figure 4This is a diagram showing the assembly of a screening cylinder and a hinged plate in an integrated equipment for dismantling electronic components from waste printed circuit boards and recycling solder.

[0026] Figure 5 This diagram shows the assembly of the striking block and striking wheel in an integrated device for dismantling electronic components from waste printed circuit boards and recycling solder.

[0027] Figure 6 This is a diagram showing the assembly of a striking component and a swinging component in an integrated device for dismantling electronic components from waste printed circuit boards and recycling solder.

[0028] Figure 7 This is a diagram showing the fit between the drive gear ring and the opening / closing plate in an integrated equipment for dismantling electronic components from waste printed circuit boards and recycling solder.

[0029] Figure 8 This is a schematic diagram of a swing component in an integrated equipment for dismantling electronic components from waste printed circuit boards and recycling solder.

[0030] Figure 9 This diagram shows the connection between the unblocking component and the conveyor belt in an integrated equipment for dismantling and recycling electronic components from waste printed circuit boards.

[0031] Figure 10 This is a schematic diagram of a dredging component in an integrated equipment for dismantling waste printed circuit board electronic components and recycling solder.

[0032] In the attached diagram: 1. Separating cylinder; 2. Fixed cylinder; 3. Screening cylinder; 4. Actuating assembly; 41. First toothed ring; 42. First gear; 43. First rotating shaft; 44. Cam; 45. Actuating rod; 46. Actuating block; 5. Swinging assembly; 51. Second toothed ring; 52. Second gear; 53. Reciprocating screw; 54. Screw sleeve; 55. Swinging plate; 6. Conveying and screening assembly; 61. First synchronous pulley; 62. Second synchronous pulley; 63. First conveying roller; 64. Conveyor belt; 65. Second conveying roller; 7. Unblocking device. Components; 71. Fixed shaft; 72. First electromagnet; 73. Second spring; 74. Second magnet; 75. Unblocking rod; 8. Drive shaft; 9. Drive gear ring; 10. Opening and closing plate; 11. Screening hole; 12. Collection box; 13. Slide groove; 14. First spring; 15. Striking wheel; 16. Third gear; 17. Rack; 18. Fourth gear; 19. Slide rod; 20. Bolt rod; 21. Support base; 22. Drive motor; 23. Feed hopper; 24. Control box; 25. Heating equipment; 26. Baffle plate. Detailed Implementation

[0033] The technical solutions of the present invention will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present invention, and not all embodiments.

[0034] Example 1

[0035] Please see Figures 1-10 This invention relates to an integrated device for dismantling and recycling solder from waste printed circuit boards (PCBs). It includes a separation cylinder 1, a fixed cylinder 2 rotatably connected to the inner wall of the separation cylinder 1 via a bearing seat, a screening cylinder 3 fixedly connected to the surface of the fixed cylinder 2, and a separation mechanism within the inner cavity of the separation cylinder 1. The separation mechanism includes a striking component 4 disposed within the inner cavity of the separation cylinder 1 and a swinging component 5 disposed within the inner cavity of the screening cylinder 3. The striking component 4 includes a first toothed ring 41 fixedly connected to the surface of the screening cylinder 3, a first gear 42 meshing with the inner side of the first toothed ring 41, a first rotating shaft 43 fixedly connected to the axis of the first gear 42, and a convex... The assembly includes a wheel 44, a striking rod 45 rotatably connected to the inner cavity of the separating cylinder 1 via a mounting block and a pin, a striking block 46 fixedly connected to one side of the striking rod 45, a sliding groove 13 on one side of the striking block 46, a first spring 14 fixedly connected to the inner cavity of the sliding groove 13, and a striking wheel 15 fixedly connected to the other end of the first spring 14. The swing assembly 5 includes a second toothed ring 51 fixedly connected to the inner cavity of the separating cylinder 1 via a mounting rod, a second gear 52 meshing with the surface of the second toothed ring 51, a reciprocating lead screw 53 fixedly connected to the axis of the second gear 52, a threaded sleeve 54 sleeved on the surface of the reciprocating lead screw 53, and a swing plate 55 fixedly connected to the surface of the threaded sleeve 54.

[0036] Further features include: a heat insulation layer on the inner wall of the separation cylinder 1 to prevent heat dissipation; a feeding hopper 23 at the top of the separation cylinder 1; a rotating motor fixedly connected to one side of the feeding hopper 23; a shielding plate fixedly connected to the output shaft of the rotating motor; and the rotation of the output shaft via the shielding plate to achieve sealing or opening of the top of the separation cylinder 1 (this is conventional technology and therefore not described in detail in the claims); a discharge port at the bottom of the separation cylinder 1; and continuous feeding and separation of circuit boards via rotation. A fixed cylinder 2 is coaxial with the separation cylinder 1 and rotates independently via a bearing seat. A screening cylinder 3 is welded to the surface; the surface of the screening cylinder 3 has evenly distributed through holes to facilitate solder separation and screening. A first toothed ring 41 is fixed to the surface of the screening cylinder 3 and meshes with a first gear 42. A first rotating shaft 43 drives a convex... The rotation of wheel 44 pushes the striking block 46 at the end of striking rod 45 to periodically strike the screening cylinder 3. The vibration causes the solder on the circuit board to loosen and fall off. The striking block 46 has a built-in sliding groove 13 and a first spring 14, and a striking wheel 15 at the end, which converts the rigid impact into flexible vibration to avoid damage to the circuit board. The striking wheel 15 has a degree of rotational freedom to avoid interference between the rotation of the screening cylinder 3 and the striking block 46 during the striking process, thereby improving the solder peeling efficiency. When the screening cylinder 3 rotates, the second gear 52 revolves around the second tooth ring 51, which forces the reciprocating screw 53 to rotate. The reciprocating screw 53 drives the swing plate 55 to move horizontally and reciprocally through the screw sleeve 54, pushing the circuit board to flip, ensuring uniform heating, improving the solder melting rate, and avoiding the circuit board being heated unevenly, which would reduce the solder peeling rate.

[0037] Example 2

[0038] Please see Figures 1-10Based on Embodiment 1, a screening mechanism is provided at the bottom of the separation cylinder 1. The screening mechanism includes a baffle plate 26 fixedly connected to the bottom of the separation cylinder 1, and a conveying and screening assembly 6 disposed inside the baffle plate 26. The conveying and screening assembly 6 includes a second conveying roller 65 rotatably connected to the inner wall of the baffle plate 26 via a bearing seat, and a clearing assembly 7 disposed inside the second conveying roller 65. The conveying and screening assembly 6 also includes a first synchronous pulley 61 fixedly connected to the surface of the fixed cylinder 2, a second synchronous pulley 62 connected to the first synchronous pulley 61 via a synchronous belt drive, a first conveying roller 63 fixedly connected to the second synchronous pulley 62, and a conveyor belt 64 drivenly connected to the surface of the first conveying roller 63. The first conveying roller 63 and the second conveying roller 64 are connected to each other. 65 is connected by a conveyor belt 64, the surface of which is provided with screening holes 11. The second conveyor roller 65 is at a higher horizontal height than the first conveyor roller 63. The second conveyor roller 65 has a hollow structure design. A collection box 12 is provided on one side of the baffle plate 26. The unblocking component 7 includes a fixed shaft 71 fixedly connected to one side of the baffle plate 26 via a mounting plate, a first electromagnet 72 fixedly connected to the surface of the fixed shaft 71, a second spring 73 fixedly connected to the inner side of the second conveyor roller 65, a second magnet 74 fixedly connected to the other end of the second spring 73, and an unblocking rod 75 fixedly connected to one side of the second magnet 74. The first electromagnet 72 and the second magnet 74 have opposite magnetic pole directions. The first electromagnet 72 is arc-shaped.

[0039] Further configuration: The first synchronous pulley 61 drives the second synchronous pulley 62 via a synchronous belt, driving the first conveyor roller 63 and the second conveyor roller 65 to drive the conveyor belt 64. The surface of the conveyor belt 64 is provided with screening holes 11 and is inclined (the second conveyor roller 65 is higher than the first conveyor roller 63). The inclined conveying extends the solder screening path, improving the recovery rate compared to gravity sliding. The solder falls into the collection box 12 through the screening holes 11. The opposite magnetic poles of the first magnet and the second magnet 74 repel each other, which can push the unblocking rod 75 to move. When the second conveyor roller 65 rotates, it drives the unblocking rod 75 set in its inner cavity to rotate. When the second magnet 74 at one end of the unblocking rod 75 moves to the relative position, the repulsive force generated by it and the first magnet will compress the corresponding second spring 73, causing the unblocking rod 75 to penetrate the screening holes 11 on the surface of the conveyor belt 64. When it is misaligned with the second magnet 74, the unblocking rod 75 is reset under the action of the second spring 73, avoiding the extension of the unblocking rod 75 from affecting the transmission of the conveyor belt 64, realizing real-time unblocking of the screening holes 11 without stopping the machine, and preventing them from becoming blocked.

[0040] Example 3

[0041] Please see Figures 1-10Based on Embodiments 1 and 2, an automatic feeding mechanism is provided inside the separation cylinder 1. This mechanism includes a drive shaft 8 rotatably connected to the inner wall of the screening cylinder 3 via a bearing seat, a drive gear ring 9 disposed on the inner wall of the separation cylinder 1, and an opening / closing plate 10 slidably connected to the inner wall of the screening cylinder 3. One end of the drive shaft 8 extends through the inner cavity of the screening cylinder 3 and is fixedly connected to a third gear 16. A rack 17 meshes with the surface of the third gear 16, and one side of the rack 17 is fixedly connected to the inner side of the opening / closing plate 10. The other end of the drive shaft 8 extends through the outer side of the screening cylinder 3 and is fixedly connected to a fourth gear 18. A sliding rod 19 is slidably connected to the surface of the moving gear ring 9. One end of the sliding rod 19 is fixedly connected to the inner cavity of the separation cylinder 1. A bolt rod 20 is rotatably connected to one side of the driving gear ring 9 through a bearing seat. The other end of the bolt rod 20 extends through to the outside of the separation cylinder 1. A support base 21 is fixedly connected to one side of the separation cylinder 1. A drive motor 22 is fixedly connected to the top of the support base 21. The output shaft of the drive motor 22 is fixedly connected to one end of the fixed cylinder 2. A feed hopper 23 is provided at the top of the separation cylinder 1. A control box 24 is fixedly connected to the right side of the support base 21. A heating device 25 is fixedly connected to the right side of the support base 21 through a mounting rod.

[0042] Further configuration: The drive gear ring 9 and the fourth gear 18 are designed to be offset to prevent the drive gear from interfering with the fourth gear 18 under normal operating conditions. A protective box is fixedly connected to the inner cavity of the screening cylinder 3. The protective box is fitted onto the surface of the third gear 16 to prevent the circuit board from affecting the transmission of the third gear 16. When unloading is required, the drive gear ring 9 is moved axially by rotating the bolt rod 20 so that it is on the same plane as the fourth gear 18. At this time, during the rotation of the fixed cylinder 2, the drive gear ring 9 drives the opening and closing plate 10 to slide through the fourth gear 18, drive shaft 8, third gear 16, and rack 17 to facilitate material discharge. When feeding is required, the screening cylinder 3 is simply exposed and rotated to the top to open the feeding bin 23. The material in the feeding bin 23 falls into the inner cavity of the screening cylinder 3 under the action of gravity, realizing the automatic feeding and unloading function. This solves the problems of low efficiency of existing manual feeding and the safety hazards caused by manual contact with the high-temperature cavity, and realizes continuous production. The main function of the heating equipment 25 (existing equipment) is to inject high-temperature flames into the inner cavity of the fixed cylinder 2 to achieve the heating function.

[0043] The working principle of this invention is as follows: the circuit board is transported to the unloading hopper, the screening cylinder 3 is exposed and rotated to the top through the slot, the feeding hopper 23 is opened, and the circuit board falls into the inner cavity of the screening cylinder 3 under the action of gravity. Then the drive motor 22 is started, the drive motor 22 drives the fixed cylinder 2 to rotate, and the fixed cylinder 2 drives the screening cylinder 3 to rotate. When the screening cylinder 3 rotates to the drive gear ring 9, the drive gear ring 9 drives the opening and closing plate 10 to slide through the fourth gear 18, the drive shaft 8, the third gear 16, and the rack 17, so that the screening cylinder 3 is closed. Then the bolt rod 20 is rotated, and the bolt rod 20 drives the drive gear ring 9 to move, so that it is misaligned with the fourth gear 18.

[0044] At this time, the screening cylinder 3 can rotate normally. The centrifugal force generated by the rotation makes the circuit board adhere to the inner wall of the screening cylinder 3. The screening cylinder 3 drives the first toothed ring 41 to rotate. The first toothed ring 41 drives the cam 44 to rotate through the first gear 42 and the first rotating shaft 43, pushing the striking block 46 at the end of the striking rod 45 to periodically strike the screening cylinder 3. The vibration causes the solder on the circuit board to loosen and fall off, improving the solder peeling efficiency.

[0045] When the screening cylinder 3 rotates, the second gear 52 revolves around the second tooth ring 51, forcing the reciprocating screw 53 to rotate. The reciprocating screw 53 drives the swing plate 55 to move horizontally and reciprocally through the screw sleeve 54, pushing the circuit board to flip, ensuring uniform heating, improving the solder melting rate, and avoiding uneven heating of the circuit board, which would reduce the solder falling off rate.

[0046] After the solder melts, it falls onto the surface of the conveyor belt 64 through the discharge port. The fixed cylinder 2 drives the first synchronous wheel 61, which in turn drives the second synchronous wheel 62 via the synchronous belt. This drives the first conveyor roller 63 and the second conveyor roller 65 to drive the conveyor belt 64. The conveyor belt 64 moves upward at a constant speed at an angle. The angled conveying extends the solder screening path, which improves the recovery rate compared to gravity sliding. The solder falls into the collection box 12 through the screening hole 11.

[0047] When the second conveyor roller 65 rotates, it drives the unblocking rod 75 located in its inner cavity to rotate. When the second magnet 74 at one end of the unblocking rod 75 moves to a relative position, the repulsive force generated by the unblocking rod 75 and the first magnet will compress the corresponding second spring 73, causing the unblocking rod 75 to penetrate the screening hole 11 on the surface of the conveyor belt 64. When it is misaligned with the second magnet 74, the unblocking rod 75 is reset under the action of the second spring 73, avoiding the extension of the unblocking rod 75 from affecting the transmission of the conveyor belt 64, realizing real-time unblocking of the screening hole 11 without stopping the machine, and preventing it from becoming blocked.

[0048] After screening, simply control the drive motor 22 to rotate in the opposite direction, and then rotate the bolt rod 20 to drive the drive gear ring 9 to move axially, so that it is on the same plane as the fourth gear 18. The drive gear ring 9 drives the opening and closing plate 10 to slide in the opposite direction through the fourth gear 18, drive shaft 8, third gear 16, and rack 17, thereby opening the screening cylinder 3 and discharging the material under the action of gravity. This device has high disassembly efficiency, and disassembly and solder recycling are completed simultaneously, improving work efficiency. Moreover, the fully automatic loading and unloading reduces manual intervention and eliminates the risk of high temperature operation.

[0049] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An integrated device for dismantling and recycling solder from waste printed circuit boards and electronic components, comprising a separation cylinder (1), characterized in that: The inner wall of the separation cylinder (1) is rotatably connected to a fixed cylinder (2) via a bearing seat, and a screening cylinder (3) is fixedly connected to the surface of the fixed cylinder (2); The separation cylinder (1) is provided with a separation mechanism, which includes a striking component (4) provided in the inner cavity of the separation cylinder (1) and a swing component (5) provided in the inner cavity of the screening cylinder (3). The bottom of the separation cylinder (1) is provided with a screening mechanism, which includes a baffle plate (26) fixedly connected to the bottom of the separation cylinder (1), a conveying and screening assembly (6) provided inside the baffle plate (26), the conveying and screening assembly (6) including a second conveying roller (65) rotatably connected to the inner wall of the baffle plate (26) through a bearing seat, and a clearing assembly (7) provided inside the second conveying roller (65); The separation cylinder (1) is equipped with an automatic feeding mechanism. The automatic feeding mechanism includes a drive shaft (8) rotatably connected to the inner wall of the screening cylinder (3) via a bearing seat, a drive gear ring (9) disposed on the inner wall of the separation cylinder (1), and an opening and closing plate (10) slidably connected to the inner wall of the screening cylinder (3).

2. The integrated equipment for dismantling and recycling solder from waste printed circuit boards as described in claim 1, characterized in that: The striking assembly (4) includes a first toothed ring (41) fixedly connected to the surface of the screening cylinder (3), a first gear (42) meshing with the inner side of the first toothed ring (41), a first rotating shaft (43) fixedly connected to the axis of the first gear (42), a cam (44) fixedly connected to the surface of the first rotating shaft (43), a striking rod (45) rotatably connected to the inner cavity of the separation cylinder (1) via a mounting block and a pin, and a striking block (46) fixedly connected to one side of the striking rod (45).

3. The integrated equipment for dismantling and recycling solder from waste printed circuit boards as described in claim 2, characterized in that: The striking block (46) has a groove (13) on one side, and a first spring (14) is fixedly connected to the inner cavity of the groove (13). The other end of the first spring (14) is fixedly connected to a striking wheel (15).

4. The integrated equipment for dismantling and recycling solder from waste printed circuit boards as described in claim 1, characterized in that: The swing assembly (5) includes a second toothed ring (51) fixedly connected to the inner cavity of the separation cylinder (1) by a mounting rod, a second gear (52) meshing with the surface of the second toothed ring (51), a reciprocating lead screw (53) fixedly connected to the shaft of the second gear (52), a thread sleeve (54) sleeved on the surface of the reciprocating lead screw (53), and a swing plate (55) fixedly connected to the surface of the thread sleeve (54).

5. The integrated equipment for dismantling and recycling solder from waste printed circuit boards and electronic components according to claim 1, characterized in that: The conveying and screening assembly (6) further includes a first synchronous wheel (61) fixedly connected to the surface of the fixed cylinder (2), a second synchronous wheel (62) connected to the first synchronous wheel (61) via a synchronous belt drive, a first conveying roller (63) fixedly connected to the second synchronous wheel (62), and a conveyor belt (64) drivenly connected to the surface of the first conveying roller (63).

6. The integrated equipment for dismantling and recycling solder from waste printed circuit boards as described in claim 5, characterized in that: The first conveyor roller (63) and the second conveyor roller (65) are connected by the conveyor belt (64). The surface of the conveyor belt (64) is provided with screening holes (11). The second conveyor roller (65) is higher than the first conveyor roller (63). The second conveyor roller (65) is a hollow structure design. A collection box (12) is provided on one side of the baffle plate (26).

7. The integrated equipment for dismantling and recycling solder from waste printed circuit boards as described in claim 1, characterized in that: The unblocking assembly (7) includes a fixed shaft (71) fixedly connected to one side of the baffle plate (26) via a mounting plate, a first electromagnet (72) fixedly connected to the surface of the fixed shaft (71), a second spring (73) fixedly connected to the inner side of the second conveying roller (65), a second magnet (74) fixedly connected to the other end of the second spring (73), and an unblocking rod (75) fixedly connected to one side of the second magnet (74).

8. The integrated equipment for dismantling and recycling solder from waste printed circuit boards as described in claim 7, characterized in that: The first electromagnet (72) and the second magnet (74) are designed with opposite magnetic pole directions, and the first electromagnet (72) is arc-shaped.

9. The integrated equipment for dismantling and recycling solder from waste printed circuit boards as described in claim 1, characterized in that: One end of the drive shaft (8) passes through the inner cavity of the screening cylinder (3) and is fixedly connected to a third gear (16). A rack (17) meshes with the surface of the third gear (16). One side of the rack (17) is fixedly connected to the inner side of the opening and closing plate (10). The other end of the drive shaft (8) passes through the outer side of the screening cylinder (3) and is fixedly connected to a fourth gear (18). A slide rod (19) is slidably connected to the surface of the drive gear ring (9). One end of the slide rod (19) is fixedly connected to the inner cavity of the separation cylinder (1). One side of the drive gear ring (9) is rotatably connected to a bolt rod (20) through a bearing seat. The other end of the bolt rod (20) passes through the outer side of the separation cylinder (1).

10. The integrated equipment for dismantling and recycling solder from waste printed circuit boards as described in claim 1, characterized in that: A support base (21) is fixedly connected to one side of the separation cylinder (1), and a drive motor (22) is fixedly connected to the top of the support base (21). The output shaft of the drive motor (22) is fixedly connected to one end of the fixed cylinder (2). A feed hopper (23) is provided on the top of the separation cylinder (1). A control box (24) is fixedly connected to the right side of the support base (21), and a heating device (25) is fixedly connected to the right side of the support base (21) via a mounting rod.

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