Automatic disassembling device for regeneration of display screen of waste tablet personal computer

Abstract

The invention discloses a waste tablet computer display screen regeneration automatic disassembling device. The device comprises a rack, wherein a workbench is arranged at the top of the rack, and a bottom plate is arranged at the bottom of the rack; a preheating area for preheating the tablet personal computer, a working area and a control panel are respectively arranged on the workbench; a first heating plate and a positioning plate are arranged in the preheating area; a plurality of through holes which are uniformly distributed and correspond to glue bonding positions of the tablet personal computer and the display screen are formed in the bottom of the positioning plate made of the heat insulation material; a base, a second heating plate, a vacuum chuck and an upper cover plate are arranged in the working area; the upper cover plate is hinged to the base; a lifting device capable of slowly lifting one end of the upper cover plate is mounted on the workbench; a control electric box and a vacuum machine are mounted on the bottom plate; 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. The display screen and the tablet computer are automatically disassembled through the preheating area, the working area and the lifting device.

Description

Technical Field

[0001] The present invention relates to the field of recycling of waste tablet computers, and in particular to an automatic disassembly device for recycling display screens of waste tablet computers. Background Art

[0002] International Data Corporation IDC released the "Top Ten Insights into the Chinese Tablet Computer Market in 2021", indicating that tablet computer screens will continue to develop into larger screens. IDC predicts that the market share of the then mainstream 10-inch (9-11-inch) tablet computer screen size will continue to expand, and the market share will be close to 80% in 2021. There will be more and more products above 11 inches. With the increase in market share, tablet computer screens will develop towards larger sizes. IDC released the China Tablet Computer Quarterly Tracking Report for the fourth quarter of 2023. The data showed that the Chinese tablet computer market shipped approximately 8.17 million units in the fourth quarter of 2023. In 2024, the Chinese tablet computer market ushered in new development opportunities. The integration of AI technology and the trend towards large screens have become important factors driving market growth. With the increase in large screens and performance, the application scenarios of tablet computers are expanding to professional fields such as learning and office. In particular, the market share of 12-14 inches has increased significantly, among which the market shipments in the 13-14-inch size segment have increased by an astonishing 582.2% year-on-year.

[0003] With the accelerating pace of electronic device replacement, my country has entered a peak period of mobile phone and tablet computer obsolescence and scrapping. Because used mobile phones and tablet computers are composed of a variety of materials and components, including casings, motherboards, batteries, displays, chips, and keyboards, they offer significant recycling value. In existing technology, used computers are sent to dismantling factories, where specialized personnel disassemble them. Due to the waterproof and dustproof requirements of mobile phones and tablet computers, disassembly is extremely complex, requiring specialized tools and specialized personnel. Display screen removal is the most complex of the entire disassembly process, as it requires both the integrity of the screen and the integrity of connected components. This makes the entire disassembly process time-consuming and labor-intensive, and screen damage is a common occurrence. Improving disassembly efficiency and ensuring that the display screen is not damaged during disassembly are challenges the applicant is dedicated to addressing. Summary of the Invention

[0004] In order to solve the defects of the prior art, the present invention provides an automatic disassembly device for recycling waste tablet computer display screens.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: an automatic disassembly device for recycling and disassembling the display screen of a waste tablet computer, comprising a frame with a workbench on the top and a base plate at the bottom; the workbench is respectively provided with a preheating area for preheating the tablet computer, a working area for maintaining the tablet computer disassembly temperature and capable of disassembling the display screen and the tablet computer, and a control panel; a first heating plate is provided in the preheating area; 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 display screen; a base, a second heating plate, a vacuum suction cup and an upper cover are provided in the working area; the base fixed on the workbench; 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; a slot for fixing the tablet computer is provided on the upper cover plate; after the tablet computer is snapped and 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 cooperation of the connecting hole and the connecting shaft; a lifting device is provided on the workbench, which can slowly lift the other end of the upper cover plate with the connecting shaft as the axis; a control box and a vacuum machine are respectively installed on the bottom plate; the control panel, the first heating plate, the second heating plate, the lifting device, and the vacuum machine are respectively electrically connected to the control box; the vacuum suction cup is connected to the vacuum machine through a pipeline.

[0006] With the technical solution of this invention, the first heating plate in the preheating zone heats and softens the glue between the tablet and the display screen. The second heating plate in the working zone provides support for the tablet during disassembly. A vacuum machine and vacuum suction cups secure the display screen to the suction cups. A lifting device slowly lifts the top cover to separate the display screen and tablet. This technical solution improves disassembly efficiency and ensures that the display screen is not damaged during disassembly.

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

[0008] The control box is also equipped with two buzzers for reminding the first and second heating plates that their work is complete. The two buzzers are electrically connected to the PLC controller. The buzzers are used to remind the operator that the work is completed.

[0009] A further improvement is that the lifting device includes a stepper motor, a lead screw, a synchronous polished rod, a lead screw slider, a roller, and an encoder. The stepper motor is fixed to the workbench. 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 and counts the lead screw's rotations. The lead screw slider is mounted on the lead screw and the synchronous polished rod respectively. The ends of the synchronous polished rod are fixed to the base. The roller is mounted on the top of the lead screw slider through a mounting slot and a mounting shaft, and abuts the lower surface of the upper cover. The stepper motor and encoder are electrically connected to the PLC controller. The stepper motor drives the lead screw to rotate, achieving the reciprocating displacement of the lead screw slider. The synchronous polished rod ensures the stability of the lead screw slider during operation. The encoder controls the rotation speed and reciprocating motion of the stepper motor.

[0010] A further improvement is that the preheating zone includes a support base and a bracket; the support base is fixed to the workbench; the first heating plate, the positioning plate, and the bracket are respectively fixed to the support base; a photoelectric switch is fixed to the bracket for detecting whether the tablet computer is placed on the positioning plate; 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] A further improvement includes a groove on the top of the second heating plate; slots are provided around the groove; a sealing ring is secured within the groove via the slots; a connector is provided at one end of the groove for connection to a vacuum pump; a vacuum suction cup is secured to the second heating plate; and a vacuum zone is formed in the groove through the cooperation of the vacuum machine, vacuum suction cup, sealing ring, and second heating plate. The display screen is secured by the vacuum machine and vacuum suction cup.

[0012] A further improvement is that the upper cover includes a cover body and a separator plate; a connection hole is provided at one end of the cover body; a connecting shaft is provided on the base; the cover body and the base are connected by the connection hole and the connecting shaft; the cover body has a hole for accommodating the separator plate; baffles are provided around the hole to secure the separator plate; and the separator plate has a slot for accommodating a tablet computer. The separator plate enables compatibility with disassembly of the mobile phone display.

[0013] As a further improvement, curved slots are located on both sides of the card slot to facilitate tablet removal. A retaining edge is located around the slot to prevent the tablet from sliding off when the upper cover is raised. The curved slots facilitate tablet removal, and the retaining plate facilitates the disassembly of the tablet and the display.

[0014] As a further improvement, a handle is provided on the upper cover for manually lifting the upper cover. The handle can manually lift the upper cover, thereby achieving the purpose of manually separating the tablet computer.

[0015] A further improvement includes cover panels on the left, right, and rear sides of the bracket; a door panel connected to the front of the bracket via a connecting shaft or hinge; a door lock mounted on the door panel to secure it to the frame; and support feet mounted on the bottom of the frame. The cover panels are equipped with a rotary switch for controlling the main power supply and an exhaust fan; the rotary switch is connected in front of the main power switch; and the exhaust fan is electrically connected to the PLC controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional picture of the automatic disassembly device for recycling used tablet computer displays before the display screen is disassembled.

[0017] Figure 2 This is a three-dimensional image of the display screen being disassembled by the automatic disassembly device for recycling used tablet computer displays.

[0018] Figure 3 This is a schematic diagram of the disassembly of an automatic disassembly device for recycling used tablet computer displays.

[0019] Figure 4 It is a perspective view of the lifting device.

[0020] Figure 5 yes Figure 3 A partial enlarged view of . DETAILED DESCRIPTION

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

[0022] like Figures 1 to 5 As shown, an automatic disassembly device for recycling waste tablet computer display screens includes a frame 3 with a workbench 1 on the top and a base plate 2 at the bottom; the workbench is respectively provided with a preheating area for preheating the tablet computer, a work area for maintaining the tablet computer disassembly temperature and capable of disassembling the display screen 47 and the tablet computer 46, and a control panel.

[0023] The control panel includes an installation box 14 and a touch screen 15 arranged on the installation box, an emergency stop button 16, a time controller 17, a start button 18 and a start button 2 19 installed on a rack near the working area; the installation box is fixed on the workbench; the control electrical box is equipped with a main power switch, contactor 1, contactor 2, a 24V power supply, a PLC controller, a temperature control module and a solid-state relay; the main power switch is connected to the 220V external power supply; contactor 1 and contactor 2 are connected behind the main power switch; contactor 1 is electrically connected to the vacuum machine; the 24V power supply and the solid-state relay are respectively connected behind contactor 2; the two solid-state relays are respectively electrically connected to the first heating plate and the second heating plate; the PLC controller is respectively electrically connected to the 24V power supply, the temperature control module, the display screen, the emergency stop button, the time controller, the start button 1, the start button 2 and the lifting device; the start button 1 is used to control the first heating plate; the start button 2 is used to control the second heating plate and the lifting device; the first heating plate and the second heating plate are respectively electrically connected to the temperature control module. The control box is also equipped with two buzzers 20 for reminding the first heating plate and the second heating plate that their work has been completed. The two buzzers are electrically connected to the PLC controller respectively.

[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, and bracket are each fixed to the support base. The positioning plate is used to secure the tablet computer. Made of thermally insulating material, the bottom of the positioning plate is provided with several evenly distributed through-holes 6, corresponding to the glued areas between the tablet computer and the display screen. A photoelectric switch 28 is fixed to 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 is provided with a base 7, a second heating plate 8, a vacuum suction cup 9 and an upper cover plate 10; the base is fixed on the workbench; in order to prevent debris from falling directly onto the workbench during the disassembly process, an isolation bottom plate 48 is also provided between the base and the workbench; 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; a card slot 11 for fixing the tablet computer is provided on the upper cover plate; after the tablet computer is snapped and fixed in the card 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; a lifting device is provided on the workbench, which can slowly lift the other end of the upper cover plate with the connection shaft as the axis; a control box 12 and a vacuum machine 13 are respectively installed on the bottom plate; the control panel, the first heating plate, the second heating plate, the lifting device, and the vacuum machine are respectively electrically connected to the control box; the vacuum suction cup is connected to the vacuum machine through a pipe.

[0026] The second heating plate has a groove 29 at the top, with slots 30 surrounding it. A sealing ring 31 is secured within the groove via the slots. A connector 32 for connecting to a vacuum pump is located at one end of the groove. The vacuum suction cup is secured to the second heating plate. The groove forms a vacuum zone through the cooperation of the vacuum pump, the vacuum suction cup, the sealing ring, and the second heating plate. The upper cover includes a cover body 33 and a separator plate 34. A connecting hole is located at one end of the cover body. 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 separator plate. A baffle 35 is provided around the hole to secure the separator plate. The separator plate has a slot 11 for accommodating the tablet computer. Slot 11 is flanked by curved removal slots 36 for convenient tablet removal. The slots are surrounded by ribs 37 to prevent the tablet computer from sliding off when the cover is raised. A handle 38 is provided on the cover body for manually lifting the cover.

[0027] The lifting device includes a stepper motor 21, a lead screw 22, a synchronous light rod 23, a lead screw slider 24, a roller 25 and an encoder 45; the stepper motor is fixed on the workbench; the lead screw is fixedly connected to the stepper motor through 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 respectively installed on the lead screw 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 lead screw slider through the cooperation of the mounting groove and the mounting shaft and abuts against the lower surface of the upper cover; the stepper motor and the encoder are respectively electrically connected to the PLC controller.

[0028] The left, right, and rear sides of the bracket are equipped with cover panels 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 secure it to the frame. Support feet 42 are installed at the bottom of the frame. The cover panels are equipped with a rotary switch 43 for controlling the main power supply and an exhaust fan 44. The rotary switch is connected to the main power switch. The exhaust fan is electrically connected to the PLC controller.

[0029] In order to better illustrate the technical solution of the present application, the operation process of the present invention is now described.

[0030] The applicant declares that the program of the PLC controller and the control program of the touch screen are only written for the purpose of realizing automatic disassembly, and are not the content to be protected by this application. In addition, the program is a conventional design for ordinary technicians in this field, that is, ordinary electrical engineers can write it according to control needs.

[0031] The administrator configures the system using the touchscreen according to production requirements (i.e., the tablet's actual dimensions). Once configuration is complete, 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 and preheated for approximately 5 to 7 minutes to soften the adhesive at the bonding point and facilitate separation. The PLC controller receives a signal from the timer indicating the set time has expired and sends a signal to the preheating buzzer to sound an alarm. After preheating, the operator places the tablet computer screen-side down in the upper template's slot and presses the second start button. The second heating plate begins heating, the vacuum machine begins drawing vacuum, and the tablet's display is attached to the vacuum cup. The PLC controller receives a signal from the timer indicating the set time has been reached and sends a command to the stepper motor. The motor has four travel stages. The first stage is the dry run distance, which should not exceed 20mm during setup, and the speed should be set within 2-5mm / s. The second, third, and fourth stages are the primary disassembly parameters for the tablet. The second and fourth stages are designed for dispensing large adhesive surfaces, so the speed should be set slower, between 0.5-3mm / s (adjustable to actual conditions). The third stage can be slightly faster, between 1.0-4.0mm / s, to remove the edges. The return peel speed is set at twice the peel speed, which can be adjusted or disabled based on actual conditions. The distance settings for each speed are on the right, and the peel distance is set according to the actual length. The stepper motor operates according to the set program, pushing the upper template to gradually rise. The outer frame of the tablet computer and its upper template rise together, and the display screen is adsorbed and fixed by the vacuum suction cup, finally realizing the separation of the tablet computer and the display screen.

[0032] The above-mentioned embodiment is only a preferred embodiment of the present invention, but the present embodiment is not limited by the above-mentioned embodiment. Any other changes, modifications, replacements, combinations, and simplifications made without departing from the spirit and principles of the present invention should be equivalent replacement methods and fall within the scope of protection of the present invention.

Claims

1. An automatic disassembly device for recycling waste tablet computer display screens, comprising a frame (3) with a workbench (1) on the top and a base plate (2) on the bottom; characterized in that: The workbench is provided with a preheating area for preheating a tablet computer, a work area for maintaining the tablet computer disassembly temperature and capable of disassembling a display screen (47) and a tablet computer (46), and a control panel; a first heating plate (4) is provided in the preheating area; a positioning plate (5) for fixing the tablet computer is provided above the first heating plate; the positioning plate is made of a heat-insulating material; a plurality of evenly distributed through holes (6) are provided at the bottom of the positioning plate; the through holes correspond to the glue bonding points between the tablet computer and the display screen; a base (7), a second heating plate (8), a vacuum suction cup (9) and an upper cover (10) are provided in the work area; the base is fixed on the workbench; the second heating plate is fixed on the base for Maintain the temperature during disassembly; a vacuum suction cup is fixed above the second heating plate for adsorbing and fixing the display screen; a slot (11) for fixing the tablet computer is provided on the upper cover plate; after the tablet computer is snapped and fixed in the slot, the display screen can be attached to the vacuum suction cup; one end of the upper cover plate is mounted on the base through the connection hole and the connection shaft; a lifting device is provided on the workbench that can slowly lift the other end of the upper cover plate with the connection shaft as the axis; a control box (12) and a vacuum machine (13) are respectively installed on the bottom plate; the control panel, the first heating plate, the second heating plate, the lifting device, and the vacuum machine are respectively electrically connected to the control box; the vacuum suction cup and the vacuum machine are connected through a pipeline.

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

3. The automatic disassembly device for recycling waste tablet computer display screens according to claim 2 is characterized in that: The control box is also equipped with two buzzers (20) for reminding the first heating plate and the second heating plate that their work is complete; the two buzzers are electrically connected to the PLC controller respectively.

4. The automatic disassembly device for recycling waste tablet computer display screens according to claim 2 is characterized in that: The lifting device comprises a stepper motor (21), a lead screw (22), a synchronous light rod (23), a lead screw slider (24), a roller (25) and an encoder (45); the stepper motor is fixed on a workbench; the lead screw is fixedly connected to the stepper motor through 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 respectively mounted on the lead screw and the synchronous light rod; the two ends of the synchronous light rod are fixed on the base; the roller is mounted 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 respectively electrically connected to the PLC controller.

5. The automatic disassembly device for recycling waste tablet computer display screens according to claim 4 is characterized in that: The preheating zone includes a support base (26) and a bracket (27); the support base is fixed on the workbench; the first heating plate, the positioning plate and the bracket are respectively fixed on the support base; a photoelectric switch (28) 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.

6. The automatic disassembly device for recycling waste tablet computer display screens according to claim 4 is characterized in that: A groove (29) is provided on the top of the second heating plate; clamping grooves (30) are provided around the groove; a sealing ring (31) is fixed in the groove through the clamping groove; a connector (32) connected to a vacuum pump is provided at one end of the groove; a vacuum suction cup is fixed on the second heating plate; and a vacuum area is formed in the groove under the cooperation of the vacuum machine, the vacuum suction cup, the sealing ring, and the second heating plate.

7. The automatic disassembly device for recycling waste tablet computer display screens according to claim 4 is characterized in that: The upper cover plate comprises a cover body (33) and a separation plate (34); a connection hole is provided at one end of the body; a connection shaft is provided on the base; the body and the base are connected through the connection hole and the connection shaft; a hole is provided on the body for accommodating the separation plate; baffles (35) for fixing the separation plate are provided around the hole; and a card slot (11) for accommodating a tablet computer is provided on the separation plate.

8. The automatic disassembly device for recycling waste tablet computer display screens according to claim 7 is characterized in that: Both sides of the card slot (11) are provided with arc-shaped extraction slots (36) for facilitating the removal of the tablet computer; and the grooves are surrounded by retaining edges (37) for preventing the tablet computer body from sliding down when the upper cover plate is lifted.

9. The automatic disassembly device for recycling waste tablet computer display screens according to any one of claims 1 to 8, characterized in that: A handle (38) is provided on the upper cover plate for manually lifting the upper cover plate.

10. The automatic disassembly device for recycling waste tablet computer display screens according to claim 8 is characterized in that: The left side, right side and rear side of the bracket are provided with a sealing plate (39); the front side of the bracket is provided with a door panel (40) connected by a connecting shaft or a hinge; a door lock (41) capable of fixing the door panel to the frame is installed on the door panel; a supporting foot cup (42) is installed at the bottom of the frame; a knob switch (43) for controlling the main power supply and an exhaust fan (44) are provided on the sealing plate; the knob switch is connected in front of the main power switch; and the exhaust fan is electrically connected to the PLC controller.

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