Automatic dismantling and recycling device for used tablet computer screens

Abstract

The application discloses a kind of waste flat computer display screen regeneration automatic disassembling device, including the rack of top being equipped with workbench, bottom being equipped with bottom plate;Workbench is respectively equipped with the preheating area of flat computer preheating, work area and control panel;First heating plate and positioning plate are equipped in preheating area;The bottom of positioning plate made of heat insulation material is equipped with several evenly distributed and corresponding with the glue bonding place of flat computer and display screen Hole;Base, second heating plate, vacuum chuck and upper cover plate are equipped in work area;Upper cover plate is hingedly installed on base;Lifting device capable of gently lifting one end of upper cover plate is installed on workbench;Control electric box and vacuum machine are installed on bottom plate;Control panel, first heating plate, second heating plate, lifting device, vacuum machine and control electric box are electrically connected;Vacuum chuck is connected with vacuum machine by pipeline.The application realizes the automatic disassembly of display screen and flat computer by preheating area, work area and lifting device.

Description

Technical Field

[0001] This invention relates to the field of recycling waste tablet computers, and in particular to an automatic dismantling device for recycling waste tablet computer displays. Background Technology

[0002] International Data Corporation (IDC) released its "Top 10 Insights into the Chinese Tablet PC Market in 2021," indicating that tablet PC screens continued their trend towards larger sizes. IDC predicted that the market share of the then-mainstream 10-inch (9-11 inch) tablet screen size would continue to expand, reaching nearly 80% in 2021, while products larger than 11 inches would also become increasingly common. With the increase in market share, tablet PC screens would continue to grow larger. IDC also released its Q4 2023 China Tablet PC Quarterly Tracker, showing that approximately 8.17 million tablet PCs were shipped in China in Q4 2023. In 2024, the Chinese tablet PC market ushered in new development opportunities, with the integration of AI technology and the trend towards larger screens becoming important factors driving market growth. With larger screens and improved performance, the application scenarios for tablet PCs are expanding into professional fields such as learning and office work. In particular, the market share of 12-14 inch tablets increased significantly, with shipments in the 13-14 inch segment growing by an astonishing 582.2% year-on-year.

[0003] With the rapid pace of technological advancements in electronic devices, my country has entered a peak period for the obsolescence and scrapping of mobile phones and tablets. These discarded devices, composed of various materials and components such as casings, motherboards, batteries, displays, chips, and keyboards, have significant reuse value. Currently, discarded mobile phones and tablets are sent to dismantling plants where specialized personnel disassemble them. Due to the waterproof and dustproof requirements of mobile phones and tablets, disassembly is extremely complex, requiring specialized tools and skilled workers. Among the disassembly processes, screen removal is the most complex. This is because maintaining screen integrity while preventing damage to connected components makes the process time-consuming, labor-intensive, and prone to screen damage. Improving disassembly efficiency and ensuring damage-free screen removal are the issues the applicant is dedicated to addressing. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an automatic dismantling device for recycling waste tablet computer screens.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: an automatic disassembly device for recycling waste tablet computer screens, comprising a frame with a worktable at the top and a base plate at the bottom; the worktable is respectively provided with a preheating zone for preheating the tablet computer, a working area for maintaining the disassembly temperature of the tablet computer and enabling the disassembly of the screen and the tablet computer, and a control panel; a first heating plate is provided in the preheating zone; a positioning plate for fixing the tablet computer is provided above the first heating plate; the positioning plate is made of heat-insulating material; a plurality of evenly distributed through holes are provided at the bottom of the positioning plate; the through holes correspond to the glue bonding points between the tablet computer and the screen; the working area is provided with a base, a second heating plate, a vacuum suction cup, and a top cover plate; the base is fixed... The first heating plate is fixed on the worktable; the second heating plate is fixed on the base to maintain the temperature during disassembly; the vacuum suction cup is fixed above the second heating plate to adsorb and fix the display screen; the upper cover plate has a slot for fixing the tablet computer; after the tablet computer is fixed in the slot, the display screen can be attached to the vacuum suction cup; one end of the upper cover plate is installed on the base through the connection hole and the connection shaft; the worktable is equipped with a lifting device that can slowly lift the other end of the upper cover plate with the connection shaft as the axis; the control box and the vacuum machine are respectively installed on the base plate; the control panel, the first heating plate, the second heating plate, the lifting device, and the vacuum machine are electrically connected to the control box; the vacuum suction cup and the vacuum machine are connected by pipes.

[0006] By adopting the technical solution of this invention, the adhesive between the tablet computer and the display screen is preheated and softened by the first heating plate in the preheating zone; the tablet computer is disassembled by the second heating plate in the working zone. The display screen is fixed to the vacuum suction cup using a vacuum machine and vacuum suction cup; the top cover is slowly lifted by a lifting device to disassemble the display screen from the tablet computer. This technical solution improves disassembly efficiency and ensures no damage to the display screen during disassembly.

[0007] The control panel includes a mounting box and a touchscreen, emergency stop button, timer, start button 1, and start button 2 mounted on a rack near the work area. The mounting box is fixed to the workbench. The control box contains a main power switch, contactor 1, contactor 2, a 24V power supply, a PLC controller, a temperature control module, and solid-state relays. The main power switch is connected to a 220V external power supply. Contactor 1 and contactor 2 are connected after the main power switch. Contactor 1 is electrically connected to the vacuum machine. The 24V power supply and solid-state relays are connected after contactor 2. The two solid-state relays are electrically connected to the first heating plate and the second heating plate, respectively. The PLC controller is electrically connected to the 24V power supply, the temperature control module, the display screen, the emergency stop button, the timer, start button 1, start button 2, and the lifting device. Start button 1 controls the first heating plate; start button 2 controls the second heating plate and the lifting device. The first and second heating plates are electrically connected to the temperature control module. Automated control of the device is achieved through the control panel and control box.

[0008] The control box is also equipped with two buzzers to indicate the completion of the first and second heating plates; each buzzer is electrically connected to the PLC controller. The buzzers are used to remind the operator that the work is finished.

[0009] Further improvements include a lifting device comprising a stepper motor, a lead screw, a synchronous guide rod, a lead screw slider, rollers, and an encoder. The stepper motor is fixed to the worktable. The lead screw is fixedly connected to the stepper motor via a coupling. The encoder is fixed to the other end of the lead screw for counting its rotation. The lead screw slider is mounted on both the lead screw and the synchronous guide rod. Both ends of the synchronous guide rod are fixed to a base. The rollers are mounted on the top of the lead screw slider via mounting slots and mounting shafts, abutting against the lower surface of the upper cover plate. The stepper motor and encoder are electrically connected to a PLC controller. The reciprocating displacement of the lead screw slider is achieved by the stepper motor driving the lead screw to rotate. The synchronous guide rod ensures the stability of the lead screw slider during operation. The encoder is used to control the rotation speed and reciprocating motion of the stepper motor.

[0010] Further improvements include a preheating zone comprising a support base and a bracket; the support base is fixed to the worktable; the first heating plate, positioning plate, and bracket are respectively fixed to the support base; a photoelectric switch for detecting whether the tablet computer is placed on the positioning plate is fixed on the bracket; the photoelectric switch is electrically connected to the PLC controller. The photoelectric switch is used to check whether the tablet computer is placed on the positioning plate.

[0011] Further improvements include a groove on the top of the second heating plate; slots two around the groove; a sealing ring fixed within the groove via slots two; a connector for a vacuum pump at one end of the groove; and a vacuum suction cup fixed to the second heating plate. The groove, in conjunction with the vacuum pump, vacuum suction cup, sealing ring, and second heating plate, forms a vacuum zone. The display screen is thus secured using the vacuum pump and vacuum suction cup.

[0012] Further improvements include a cover plate comprising a cover body and a separation plate; one end of the cover body has a connecting hole; a connecting shaft is provided on the base; the cover body and the base are connected by the connecting hole and the connecting shaft; the cover body has a hole for accommodating the separation plate; baffles for fixing the separation plate are provided around the hole; and a slot for accommodating a tablet computer is provided on the separation plate. The separation plate enables compatibility with the disassembly of mobile phone displays.

[0013] Further improvements include curved removal slots on both sides of slot one to facilitate the removal of the tablet computer; and baffles around slot one to prevent the tablet computer from sliding off when the top cover is lifted. The curved removal slots make it easy to remove the tablet computer; the baffles facilitate the disassembly of the tablet computer from the display screen.

[0014] As a further improvement, the top cover is equipped with a handle for manually lifting it. The handle allows the top cover to be lifted manually, thus enabling manual separation of the tablet computer.

[0015] Further improvements include sealing plates on the left, right, and rear sides of the bracket; a door panel connected to the front side of the bracket via a connecting shaft or hinge; a door lock installed on the door panel to secure it to the frame; and support feet installed at the bottom of the frame. The sealing plates also include a rotary switch for controlling the main power supply and an exhaust fan; the rotary switch is located before the main power switch; and the exhaust fan is electrically connected to the PLC controller. Attached Figure Description

[0016] Figure 1 This is a 3D view of the automatic dismantling and recycling device for used tablet computer screens before the screen is disassembled.

[0017] Figure 2 This is a 3D view of an automated dismantling device for recycling used tablet computer screens, showing the screen being disassembled.

[0018] Figure 3 This is an exploded view of an automated dismantling and recycling device for used tablet computer screens.

[0019] Figure 4 It is a three-dimensional diagram of the lifting device.

[0020] Figure 5 yes Figure 3 A magnified view of a portion of the image. Detailed Implementation

[0021] The preferred embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0022] like Figures 1 to 5 As shown, an automatic dismantling device for recycling waste tablet computer screens includes a frame 3 with a worktable 1 on top and a base plate 2 on the bottom; the worktable is respectively provided with a preheating area for preheating the tablet computer, a working area for maintaining the dismantling temperature of the tablet computer and being able to disassemble the screen 47 and the tablet computer 46, and a control panel.

[0023] The control panel includes a mounting box 14 and a touch screen 15, an emergency stop button 16, a time controller 17, a start button 18, and a start button 2 19 mounted on the rack near the work area. The mounting box is fixed to the workbench. The control box contains a main power switch, contactor 1, contactor 2, a 24V power supply, a PLC controller, a temperature control module, and solid-state relays. The main power switch is connected to a 220V external power supply. Contactor 1 and contactor 2 are connected after the main power switch. Contactor 1 is electrically connected to the vacuum machine. The 24V power supply and solid-state relays are connected after contactor 2. The two solid-state relays are electrically connected to the first heating plate and the second heating plate, respectively. The PLC controller is electrically connected to the 24V power supply, the temperature control module, the display screen, the emergency stop button, the time controller, start button 1, start button 2, and the lifting device. Start button 1 is used to control the first heating plate. Start button 2 is used to control the second heating plate and the lifting device. The first and second heating plates are electrically connected to the temperature control module. The control box is also equipped with two buzzers 20 for alerting the completion of the first and second heating plates; the two buzzers are electrically connected to the PLC controller.

[0024] The preheating zone includes a first heating plate 4, a support base 26, and a bracket 27. The support base is fixed to the workbench. The first heating plate, positioning plate 5, and bracket are respectively fixed to the support base. The positioning plate is used to fix the tablet computer. The positioning plate is made of heat-insulating material. The bottom of the positioning plate has several evenly distributed through holes 6. The through holes correspond to the glue bonding points between the tablet computer and the display screen. A photoelectric switch 28 is fixed on the bracket to detect whether the tablet computer is placed on the positioning plate. The photoelectric switch is electrically connected to the PLC controller.

[0025] The working area includes a base 7, a second heating plate 8, a vacuum suction cup 9, and a top cover 10. The base is fixed to the workbench. To prevent debris from falling directly onto the workbench during disassembly, an isolation plate 48 is installed between the base and the workbench. The second heating plate is fixed to the base to maintain the temperature during disassembly. The vacuum suction cup is fixed above the second heating plate to adsorb and fix the display screen. The top cover has a slot 11 for fixing a tablet computer. After the tablet computer is snapped into the slot 1, the display screen can be attached to the vacuum suction cup. One end of the top cover is installed on the base through a connecting hole and a connecting shaft. The workbench has a lifting device that can slowly lift the other end of the top cover using the connecting shaft as an axis. A control box 12 and a vacuum machine 13 are installed on the base. The control panel, the first heating plate, the second heating plate, the lifting device, and the vacuum machine are electrically connected to the control box. The vacuum suction cup and the vacuum machine are connected by pipes.

[0026] The top of the second heating plate has a groove 29; the groove has a second slot 30 around its perimeter; a sealing ring 31 is fixed in the groove through the second slot; one end of the groove has a connector 32 connected to a vacuum pump; a vacuum suction cup is fixed to the second heating plate; the groove forms a vacuum zone with the cooperation of the vacuum pump, vacuum suction cup, sealing ring, and second heating plate. The upper cover plate includes a cover body 33 and a separation plate 34; one end of the cover body has a connecting hole; a connecting shaft is provided on the base; the cover body and the base are connected by the connecting hole and the connecting shaft; the cover body has a hole for accommodating the separation plate; baffles 35 for fixing the separation plate are provided around the hole; the separation plate has a slot 11 for accommodating the tablet computer. The two sides of the slot 11 have arc-shaped removal slots 36 for easy removal of the tablet computer; the slot 11 has a retaining edge 37 around its perimeter to prevent the tablet computer body from sliding down when the upper cover plate is lifted. The upper cover plate has a handle 38 for manually lifting the upper cover plate.

[0027] The lifting device includes a stepper motor 21, a lead screw 22, a synchronous guide rod 23, a lead screw slider 24, a roller 25, and an encoder 45. The stepper motor is fixed on the worktable. The lead screw is fixedly connected to the stepper motor via a coupling. The encoder is fixed to the other end of the lead screw for counting the rotation of the lead screw. The lead screw slider is installed on the lead screw and the synchronous guide rod respectively. The two ends of the synchronous guide rod are fixed on the base. The roller is installed on the top of the lead screw slider through the cooperation of the mounting groove and the mounting shaft and abuts against the lower surface of the upper cover plate. The stepper motor and the encoder are electrically connected to the PLC controller respectively.

[0028] The left, right, and rear sides of the bracket are equipped with sealing plates 39; the front side of the bracket is equipped with a door panel 40 connected by a connecting shaft or hinge; a door lock 41 is installed on the door panel to fix the door panel to the frame; support feet 42 are installed at the bottom of the frame. The sealing plates are equipped with a rotary switch 43 for controlling the main power supply and an exhaust fan 44; the rotary switch is connected in front of the main power switch; the exhaust fan is electrically connected to the PLC controller.

[0029] To better illustrate the technical solution of this application, the operation process of this invention will now be described.

[0030] The applicant declares that the PLC controller program and the touch screen control program are merely programs written to achieve automatic disassembly and are not the content to be protected in this application. In addition, the program is a conventional design for those skilled in the art, meaning that ordinary electrical engineers can write it according to control needs.

[0031] The administrator configures the system via the touchscreen according to production needs (i.e., the actual size of the tablet). After configuration, the touchscreen interface is accessed. By operating the touchscreen or pressing the start button, the first heating plate begins heating. The tablet is placed on the positioning plate for thorough preheating, approximately 5 to 7 minutes, to soften the adhesive at the bonding point, making it easier to detach. The PLC controller receives the signal from the time controller indicating that the set time has been reached, and outputs a signal to the buzzer on the preheating plate to provide an alarm. After preheating, the operator places the tablet computer screen-down into slot one of the upper template and presses start button two. The second heating plate begins heating, and the vacuum machine begins vacuuming, adhering the tablet's screen to the vacuum suction cup. The PLC controller receives the signal from the time controller indicating the set time has been reached and outputs instructions to the stepper motor. The motor has four strokes. The first stroke is the idle travel distance, which should not exceed 20mm, with a speed set between 2-5mm / s. The second, third, and fourth strokes are the main disassembly parameters for the tablet. The second and fourth strokes involve a larger adhesive bonding area, so the speed should be slowed down to between 0.5-3mm / s (adjustable according to actual conditions). The third stroke disassembles both sides, so the speed can be slightly increased, set between 1.0-4.0mm / s. The return peeling speed is set to twice the peeling speed, but can also be adjusted or canceled according to actual conditions. The right side shows the distance settings for each speed segment; set the peeling distance according to the actual length. The stepper motor runs according to the set program, pushing the upper template to rise gradually. The outer frame of the tablet computer rises together with the upper template, and the display screen is attracted and fixed by the vacuum suction cup, finally detaching the tablet computer from the display screen.

[0032] The above embodiments are merely preferred embodiments of the present invention, but the present embodiments are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention shall be considered equivalent substitutions and shall fall within the protection scope of the present invention.

Claims

1. A kind of waste tablet computer display screen regeneration automatic disassembly device, including the rack (3) of the top workbench (1) being equipped with, the bottom plate (2) being equipped with in bottom;Its characterized in that: The workbench is respectively provided with a preheating area for preheating the tablet computer, a work area for maintaining the temperature of the disassembled tablet computer and enabling the display screen (47) to be disassembled from the tablet computer (46), and a control panel; the preheating area is provided with a first heating plate (4); the first heating plate is provided above with a positioning plate (5) for fixing the tablet computer; the positioning plate is made of heat insulation material; the bottom of the positioning plate is provided with a plurality of uniformly distributed through holes (6); the through holes correspond to the glue bonding position of the tablet computer and the display screen; the work area is provided with a base (7), a second heating plate (8), a vacuum chuck (9), and an upper cover plate (10); the base is fixed on the workbench; the second heating plate is fixed on the base for maintaining the temperature during disassembly; the vacuum chuck is fixed above the second heating plate for adsorbing and fixing the display screen; the upper cover plate is provided with a clamping groove I (11) for fixing the tablet computer; the tablet computer is clamped and fixed in the clamping groove I, and the display screen can be attached to the vacuum chuck; one end of the upper cover plate is installed on the base through a connecting hole matched with a connecting shaft; the workbench is provided with a lifting device capable of slowly lifting the other end of the upper cover plate with the connecting shaft as the axis; the bottom plate is respectively provided with a control electric box (12) and a vacuum machine (13); the control panel, the first heating plate, the second heating plate, the lifting device, and the vacuum machine are electrically connected with the control electric box; the vacuum chuck is connected with the vacuum machine through a pipeline.

2. The automatic disassembling device for recycling waste tablet computer display screens according to claim 1, characterized in that, The control panel includes a mounting box (14), a touch screen (15), an emergency stop button (16), a time controller (17), a start button I (18), and a start button II (19) installed on the mounting box and a rack near the work area; the mounting box is fixed on the workbench; the control electric box is provided with a main power switch, a contactor I, a contactor II, a 24V power supply, a PLC controller, a temperature control module, and solid-state relays; the main power switch is connected with a 220V external power supply; the contactor I and the contactor II are connected behind the main power switch; the contactor I is electrically connected with the vacuum machine; the 24V power supply and the solid-state relays are connected behind the contactor II; the two solid-state relays are electrically connected with the first heating plate and the second heating plate respectively; the PLC controller is electrically connected with the 24V power supply, the temperature control module, the display screen, the emergency stop button, the time controller, the start button I, the start button II, and the lifting device; the start button I is used to control the first heating plate; the start button II is used to control the second heating plate and the lifting device; the first heating plate and the second heating plate are electrically connected with the temperature control module.

3. The automatic disassembling device for recycling waste tablet computer display screen according to claim 2, characterized in that, The control box is also provided with two buzzer (20) for reminding the completion of the work of the first heating plate and the second heating plate; the two buzzers are electrically connected with the PLC controller.

4. The automatic disassembling device for recycling waste tablet computer display screen according to claim 2, characterized in that, The lifting device comprises a stepping motor (21), a screw rod (22), a synchronous light rod (23), a screw rod slider (24), a roller (25) and an encoder (45); the stepping motor is fixed on the workbench; the screw rod is fixedly connected with the stepping motor through a shaft coupling; the encoder is fixed on the other end of the screw rod for counting the rotation of the screw rod; the screw rod slider is respectively installed on the screw rod and the synchronous light rod; the two ends of the synchronous light rod are fixed on the base; the roller is installed on the top of the screw rod slider through the cooperation of the installation groove and the installation shaft and abuts against the lower surface of the upper cover plate; the stepping motor and the encoder are electrically connected with the PLC controller respectively.

5. The automatic disassembling device for recycling waste tablet computer display screen according to claim 4, characterized in that, The preheating area comprises a support base (26) and a support (27); the support base is fixed on the workbench; the first heating plate, the positioning plate and the support are respectively fixed on the support base; the support is fixed with a photoelectric switch (28) for detecting whether the tablet computer is placed on the positioning plate; the photoelectric switch is electrically connected with the PLC controller.

6. The automatic disassembling device for recycling waste tablet computer display screen according to claim 4, characterized in that, The top of the second heating plate is provided with a groove (29); the periphery of the groove is provided with a clamping groove two (30); a sealing ring (31) is fixed in the groove through the clamping groove two; one end of the groove is provided with a connector (32) connected with the vacuum pump; a vacuum chuck is fixed on the second heating plate; the groove forms a vacuum area under the cooperation of the vacuum machine, the vacuum chuck, the sealing ring and the second heating plate.

7. The automatic disassembling device for recycling waste tablet computer display screen according to claim 4, characterized in that, The upper cover plate comprises a cover main body (33) and a separation plate (34); one end of the cover main body is provided with a connecting hole; the base is provided with a connecting shaft; the cover main body is connected with the base through the cooperation of the connecting hole and the connecting shaft; the cover main body is provided with a hole accommodating the separation plate; the periphery of the hole is provided with a baffle (35) fixing the separation plate; the separation plate is provided with a clamping groove one (11) accommodating the tablet computer.

8. The automatic disassembling device for recycling waste tablet computer display screens according to claim 7, characterized in that, Both sides of the clamping groove one (11) are provided with arc-shaped taking grooves (36) for conveniently taking out the tablet computer; the periphery of the clamping groove one is provided with a baffle edge (37) for blocking the sliding of the tablet computer body when the upper cover plate is lifted. 9.The automatic disassembling device for recycling waste tablet computer display screens according to any one of claims 1 to 8, characterized in that, A handle (38) for manually lifting the upper cover plate is arranged on the upper cover plate.

10. The automatic disassembling device for recycling waste tablet computer display screen according to claim 8, characterized in that, The left side, the right side and the back side of the support are provided with sealing plates (39); the front side of the support is provided with a door plate (40) connected through a connecting shaft or a hinge; the door plate is provided with a door lock (41) capable of fixing the door plate with the rack; the bottom of the rack is provided with a support foot cup (42); the sealing plate is provided with a rotary switch (43) for controlling the total power supply and an exhaust fan (44); the rotary switch is connected in front of the total power supply switch; the exhaust fan is electrically connected with the PLC controller.

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