An automatic screen removal device

Abstract

This invention provides an automatic screen removal device, comprising: a positioning base detachably mounted on a base plate, having a positioning groove for accommodating a mobile phone back cover; a heated positioning module mounted on the base plate, comprising multiple heating components arranged around the positioning base and capable of being pressed against the positioning base under the drive of corresponding cylinders; and a removal module rotatably mounted along one side of the positioning base, comprising a suction cup matching the shape of the mobile phone screen, and linear actuators for driving the suction cup to move along its X and Z axes, the suction cup being connected to a vacuum device via a flexible tube. This invention, by setting up the positioning base and the heated positioning module, heats the mobile phone during positioning. While the removal module holds the screen with the suction cup, it can simultaneously move, lift, and rotate the screen. Furthermore, by designing the execution steps of the linear actuators, it can be applied to various mobile phone specifications.

Description

Technical Field

[0001] This invention relates to the field of automated equipment, and more particularly to an automatic screen removal device. Background Technology

[0002] Most modern smartphones consist of a unibody screen, a casing, a motherboard housed within the casing, and other integrated components. When a phone is sent back for repair, regardless of the fault, the screen must be removed for targeted repair. Currently, most phone disassembly is done manually, which is inefficient.

[0003] There are some devices for screen removal in the existing technology, but with the improvement of mobile phones, these devices will be eliminated due to unsuitable specifications and procedures. For example, different mobile phones have different screen removal procedures. Some mobile phones require the screen to be pried up along one side before removal, while others require the screen to be slid off the casing and then rotated to remove it. This results in different mobile phones needing to be equipped with different screen removal devices, which leads to high development and equipment purchase costs and requires improvement. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic screen removal device.

[0005] To achieve the above objectives, the following technical solution is adopted:

[0006] An automatic screen removal device, comprising:

[0007] A positioning base, which is detachably mounted on a base plate and has a positioning groove for accommodating a mobile phone back cover;

[0008] A heating positioning module is mounted on the base plate and includes multiple heating components arranged around the positioning seat and capable of being pressed against the positioning seat under the drive of a corresponding cylinder.

[0009] The disassembly module is rotatably mounted along one side of the positioning seat. It includes a suction cup that matches the shape of the mobile phone screen and a linear actuator for driving the suction cup to move along its X-axis and Z-axis. The suction cup is connected to a vacuum device through a hose. The disassembly module can be rotated so that the bottom surface of the suction cup is flush with the top surface of the mobile phone.

[0010] A controller and a temperature controller are provided, wherein the controller is used to control the plurality of cylinders and the linear actuator to operate in a preset manner, and the temperature controller is used to control the heating assembly to heat along a preset curve.

[0011] Furthermore, each of the multiple heating components includes a heating block and a first slide block supporting the heating block. The base plate is provided with first slide rails that respectively cooperate with the multiple first slide blocks. Multiple cylinders are mounted under the base plate, and their output shafts are connected to their corresponding first slide blocks. When the multiple cylinders drive the multiple heating blocks to press against the positioning seat, the multiple heating blocks hug the phone's frame. By setting the first slide blocks and first slide rails, the action of the heating blocks pressing against the phone is smooth, maintaining the low-cost advantage of cylinders and eliminating the disadvantage of unstable cylinder action. In addition, the multiple heating blocks can hug the phone, ensuring that the glue at the connection between the phone frame and the screen is heated properly, while preventing the phone from loosening when the screen is removed.

[0012] Furthermore, the screen disassembly device also includes a base plate, which has a hollowed-out area for mounting the bottom plate. First rotating shafts are fixedly connected to both sides of the bottom plate. A first bearing seat that mates with the first rotating shaft is provided on the base plate. A driving assembly for driving the bottom plate to rotate along the first rotating shaft is provided below the base plate. A vernier is connected to one end of the first rotating shaft at the first bearing seat. A scale corresponding to the vernier is provided on the first bearing seat. The axis of the first rotating shaft is perpendicular in horizontal space to the axis of rotation of the disassembly module along one side of the positioning seat. By driving the bottom plate to rotate through the driving assembly, more disassembly processes can be performed in conjunction with the disassembly module. For example, when the suction cup holds the phone, the rotation of the bottom plate can cause the phone casing to rotate and separate from the top or bottom of the screen. The vernier allows for constant monitoring of the degree of rotation of the phone casing, preventing over-rotation. Simultaneously, in the initial state, it facilitates manual judgment and adjustment of the phone's horizontal flatness, preventing subsequent processes from failing due to unevenness in the bottom plate and the suction cup not forming an effective connection with the phone screen.

[0013] Furthermore, the drive assembly includes a first lead screw motor, a second slide connected to the output shaft of the lead screw motor, a limit seat for limiting the travel of the second slide, and a connecting rod with one end hinged to the second slide and the other end hinged to the base plate. The first lead screw motor and the connecting rod drive the base plate to rotate, resulting in smooth and controllable movement. When used with a vernier and scale, high-precision adjustment is achieved.

[0014] Furthermore, the linear actuator is mounted on the cover plate, and the suction cup is located below the cover plate and connected to the linear actuator. The screen removal device also includes a base plate. A second rotating shaft is provided on one side of each end of the cover plate. A second bearing seat connecting the second rotating shaft is provided on the base plate. A synchronous pulley is provided on one of the second rotating shafts. A drive motor is provided on the base plate, and the output shaft of the drive motor is connected to the synchronous pulley via a belt. By driving the first rotating shaft to rotate via the drive motor, the cover plate is rotated, which saves space in the equipment and facilitates the removal of the screen by the operator.

[0015] Furthermore, a first sensing plate is provided at one end of the other second rotating shaft, and a first photoelectric sensor for sensing the rotational position of the first sensing plate is provided on the substrate. By providing the first sensing plate and the first photoelectric sensor, the rotation angle of the cover plate is sensed to ensure that the cover plate is in the correct position when it is opened and closed.

[0016] Furthermore, a mounting bracket is provided on the substrate, and the mounting bracket has an arc groove. Multiple first photoelectric sensors are mounted in the arc groove. When it is necessary to adjust the angle of the cover plate's flip, the position of the first photoelectric sensor can be adjusted along the arc groove.

[0017] Furthermore, the linear actuator includes a second lead screw motor for driving the suction cup to move along its Z-axis and a third lead screw motor for driving the suction cup to move along its X-axis. The second and third lead screw motors enable precise, smooth, and controllable movement of the suction cup.

[0018] Furthermore, the suction cup is mounted under a mounting base, and the second lead screw motor is mounted on a positioning plate. The drive end of the second lead screw motor passes through the positioning plate and is connected to the mounting base via a lead screw nut. Second slide rails are vertically fixed on both sides of the mounting base. The positioning plate is provided with a second slider that mates with the second slide rails. The positioning plate is connected to a third slide rail located on the cover plate via a third slider. The third lead screw motor is mounted on the cover plate, and its output end is connected to the positioning plate via a lead screw nut. The second lead screw motor drives the second slide rails on both sides of the mounting base to move along the second slider, and the third lead screw motor drives the positioning plate to move along the third slide rail.

[0019] Furthermore, a second sensing plate is provided on one side of the second slide rail, and multiple second photoelectric sensors are provided on the positioning plate to sense the movement of the second sensing plate. The second sensing plate and the second photoelectric sensors prevent the movement of the second lead screw motor from exceeding its range, thereby preventing damage to the screen or failure to properly attach to the screen.

[0020] By adopting the above solution, the beneficial effects of the present invention are:

[0021] By setting up a positioning base and a heated positioning module, the phone is heated when positioning it, which helps to soften the adhesive connecting the screen and the casing, making it easier to separate the screen from the casing and avoiding damage to the screen during disassembly.

[0022] While the disassembly module holds the screen with a suction cup, it can move, lift, and rotate the screen. Furthermore, by designing the execution steps of the linear actuator, it can be applied to various mobile phones of different specifications. When manufacturers change mobile phone models, they only need to replace the positioning base, which greatly improves the versatility of this device and reduces the equipment costs for manufacturers.

[0023] The screen removal device can operate fully automatically, which greatly improves production efficiency and product yield. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the automatic screen removal device according to an embodiment of the present invention;

[0025] Figure 2 This is a partial structural schematic diagram of the automatic screen removal device according to an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the heating positioning module and frame according to an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of the heating and positioning module according to an embodiment of the present invention;

[0028] Figure 5 This is a structural schematic diagram of the heating positioning module from another angle according to an embodiment of the present invention;

[0029] Figure 6 for Figure 2 A schematic diagram of the structure after omitting the heating and positioning module;

[0030] Figure 7 This is a cross-sectional view of the linear execution component according to an embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of the cooperative structure of the first sensing sheet and the first photoelectric sensor according to an embodiment of the present invention;

[0032] Figure 9 This is a schematic diagram of the overall structure of the automatic screen removal device according to an embodiment of the present invention.

[0033] The following are explanations of the labels in the attached diagram:

[0034] 1. Positioning seat; 11. Positioning groove; 2. Base plate; 3. Heating positioning module; 31. Cylinder; 32. Heating assembly; 321. Heating block; 322. First slide; 323. First slide rail; 331. First rotating shaft; 332. First bearing seat; 3321. Scale; 333. Vernier; 34. Drive assembly; 341. First lead screw motor; 342. Second slide; 343. Limit seat; 344. Connecting rod; 4. Disassembly module; 41. Suction cup; 42. Linear actuator assembly; 421. Second lead screw motor; 422. Third lead screw motor 423. Positioning plate; 424. Mounting base; 425. Second slide rail; 426. Second slider; 427. Third slider; 428. Third slide rail; 43. Cover plate; 44. Second rotating shaft; 45. Second bearing; 461. Synchronous pulley; 462. Drive motor; 471. First sensing element; 472. Mounting bracket; 4721. Arc groove; 473. First photoelectric sensor; 48. Second sensing element; 49. Second photoelectric sensor; 5. Controller; 6. Base plate; 61. Hollowed-out area; 7. Cover; 71. Button; 72. Worktable. Detailed Implementation

[0035] Typical embodiments embodying the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various variations in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations herein are for illustrative purposes only and not intended to limit the present invention.

[0036] like Figure 1-8 As shown, an automatic screen removal device includes:

[0037] Positioning seat 1 is detachably mounted on a base plate 2 and has a positioning groove 11 for accommodating the back cover of a mobile phone.

[0038] Heating positioning module 3 is mounted on base plate 2 and includes multiple heating components 32 arranged around positioning seat 1 and can be pressed against positioning seat 1 under the drive of corresponding cylinder 31.

[0039] The disassembly module 4 can be rotated along one side of the positioning seat 1. It includes a suction cup 41 that matches the shape of the mobile phone screen and a linear actuator 42 for driving the suction cup 41 to move along its X-axis and Z-axis. The suction cup 41 is connected to a vacuum device through a hose. The disassembly module 4 can be rotated so that the bottom surface of the suction cup 41 is flush with the top surface of the mobile phone.

[0040] The controller 5 is used to control multiple cylinders 31 and linear actuator 42 to work according to preset steps, and the temperature controller is used to control the heating assembly 32 to heat along a preset curve.

[0041] In one embodiment, the multiple heating components 32 each include a heating block 321 and a first slide block 322 supporting the heating block 321. A base plate 2 is provided with first slide rails 323 that respectively cooperate with the multiple first slide blocks 322. Multiple cylinders 31 are mounted under the base plate 2, and their output shafts are connected to their corresponding first slide blocks 322. When the multiple cylinders 31 drive the multiple heating blocks 321 to press against the positioning seat 1, the multiple heating blocks 321 hug the frame of the phone. By setting the first slide blocks 322 and the first slide rails 323, the action of the heating blocks 321 pressing against the phone is smooth, maintaining the low cost advantage of the cylinders 31 and eliminating the disadvantage of unstable action of the cylinders 31. In addition, the multiple heating blocks 321 can hug the phone, ensuring that the glue at the connection between the phone frame and the screen is heated evenly and effectively, while preventing the phone from becoming loose when the screen is removed. The screen disassembly device also includes a base plate 6, which has a hollow area 61 for mounting the base plate 2. The base plate 2 is fixedly connected to the two sides of the base plate 2. The base plate 6 is provided with a first bearing seat 332 that cooperates with the first bearing seat 331. The base plate 6 is provided with a drive assembly 34 for driving the base plate 2 to rotate along the first bearing seat 331. The first bearing seat 332 is provided with a vernier 333 at one end of the first bearing seat 332. The first bearing seat 332 is provided with a scale 3321 corresponding to the vernier 333. The axis of the first bearing seat 331 is perpendicular to the axis of rotation of the disassembly module 4 along one side of the positioning seat 1 in the horizontal space. The base plate 2 is rotated by the drive component 34, which can cooperate with the disassembly module 4 to perform more disassembly procedures. For example, when the suction cup 41 holds the phone, the rotation of the base plate 2 can cause the phone casing to rotate and separate from the top or bottom of the screen. The set cursor 333 can observe the degree of rotation of the phone casing at all times to avoid over-rotation. At the same time, in the initial state, it is convenient to manually judge and adjust the flatness of the phone in the horizontal direction to avoid the suction cup 41 not forming an effective connection with the phone screen when the base plate 2 is not flat, which would cause subsequent procedures to fail.

[0042] The drive assembly 34 includes a first lead screw motor 341, a second slide 342 connected to the output shaft of the lead screw motor, a limit seat 343 that limits the travel of the second slide 342, and a connecting rod 344 with one end hinged to the second slide 342 and the other end hinged to the base plate 2. The first lead screw motor 341 and the connecting rod 344 drive the base plate 2 to rotate, and the movement is smooth and controllable. When used in conjunction with the vernier caliper 333 and the scale 3321, high-precision adjustment is achieved.

[0043] In one embodiment, a linear actuator 42 is disposed on a cover plate 43, and a suction cup 41 is located below the cover plate 43 and connected to the linear actuator 42. The screen removal device also includes a base plate 6. A second rotating shaft 44 is disposed on one side of each end of the cover plate 43. A second bearing 45 seat is disposed on the base plate 6 to connect the second rotating shaft 44. A synchronous pulley 461 is disposed on one of the second rotating shafts 44, and a drive motor 462 is disposed on the base plate 6. The output shaft of the drive motor 462 is connected to the synchronous pulley 461 via a belt. The drive motor 462 drives the first rotating shaft 331 to rotate, thereby driving the cover plate 43 to rotate, which can save equipment space and facilitate the removal of the screen by the staff. A first sensing plate 471 is disposed on one end of the other second rotating shaft 44, and a first photoelectric sensor 473 is disposed on the base plate 6 to sense the rotation position of the first sensing plate 471. By setting the first sensing plate 471 and the first photoelectric sensor 473, the rotation angle of the cover plate 43 is sensed to ensure that the cover plate 43 is correctly positioned when it is flipped up and closed. A mounting bracket 472 is provided on the substrate 6, and the mounting bracket 472 has an arc groove 4721. Multiple first photoelectric sensors 473 are mounted in the arc groove 4721. When the angle of the cover plate 43 needs to be adjusted, the position of the first photoelectric sensors 473 can be adjusted along the arc groove 4721. The linear actuator 42 includes a second lead screw motor 421 for driving the suction cup 41 to move along its Z-axis and a third lead screw motor 422 for driving the suction cup 41 to move along its X-axis. Through the second lead screw motor 421 and the third lead screw motor 422, the movement of the suction cup 41 is precise, smooth, and controllable. A suction cup 41 is mounted under a mounting base 424. A second lead screw motor 421 is mounted on a positioning plate 423. The drive end of the second lead screw motor 421 passes through the positioning plate 423 and is connected to the mounting base 424 via a lead screw nut. Second slide rails 425 are vertically fixed on both sides of the mounting base 424. A second slider 426 that mates with the second slide rails 425 is provided on the positioning plate 423. The positioning plate 423 is connected to a third slide rail 428 located on a cover plate 43 via a third slider 427. A third lead screw motor 422 is mounted on the cover plate 43, and its output end is connected to the positioning plate 423 via a lead screw nut. The second lead screw motor 421 drives the second slide rails 425 on both sides of the mounting base 424 to move along the second slider 426, and the third lead screw motor 422 drives the positioning plate 423 to move along the third slide rail 428. A second sensing plate 48 is provided on one side of the second slide rail 425, and multiple second photoelectric sensors 49 for sensing the movement stroke of the second sensing plate 48 are provided on the positioning plate 423. The second sensing plate 48 and the second photoelectric sensor 49 are provided to prevent the movement stroke of the second lead screw motor 421 from exceeding the range, thereby preventing damage to the screen or failure to adhere properly to the screen.

[0044] Working principle:

[0045] The staff placed the mobile phone in the positioning seat 1, and its back was fitted into the positioning groove 11 of the positioning seat 1. The positioning groove 11 can also be equipped with a buffer pad, a camera slot, etc.

[0046] After placing the phone, the staff first observes whether the pointer of the downstream indicator 333 points to the scale 3321. If it is not aligned, it means that the base plate 2 is not level, and the controller 5 needs to be operated to adjust it so that the base plate 2 rotates along the two first rotating shafts 331. After confirming that the base plate 2 is level, the buttons 71 set around the mechanism can be pressed to start the operation of each cylinder 31 in the positioning heating module. The cylinders 31 drive the first slide block 322 to move along the first slide rail 323, and then each heating block 321 presses against the phone on the positioning seat 1 to hold and position the phone. At the same time, under the control of the temperature controller, the heating blocks 321 evenly heat the frame of the phone, softening the glue at the connection between the phone frame and the screen.

[0047] After the adhesive softens, workers can manually start the disassembly module 4 or the controller 5 can automatically control the disassembly module 4 based on time. The drive motor 462 drives the synchronous pulley 461 via a belt, which in turn drives the cover plate 43 to rotate along the two second rotating shafts 44 until the first sensing piece 471 reaches the predetermined position, i.e., after the first sensing piece 471 is detected by the designated first photoelectric sensor 473, the drive motor 462 stops, and the cover plate 43 and suction cup 41 are parallel to the phone screen. Subsequently, the second lead screw motor 421 drives the suction cup 41 to press down, directly causing the second sensing piece 48 to pass through the preset position and be detected by the second photoelectric sensor 49. At this point, the suction cup 41 is just attached to the phone screen. The vacuum device connected to the suction cup 41 starts suction, allowing the suction cup 41 to firmly adhere to the screen, and then the disassembly work can begin.

[0048] As an example, using common mobile phones on the market as examples, and combining... Figure 1 Using visual imagery, we will explain one method of screen disassembly:

[0049] After the suction cup 41 attaches to the screen, the third lead screw motor 422 drives the cover plate 43 to move to the left (moving in the X-axis direction) a short distance, causing the clip below the screen to disengage from the phone's clip seat.

[0050] When the output shaft of the first lead screw motor 341 extends or retracts, it drives the second slide block 342 to move, which in turn drives the connecting rod 344 to move. When the connecting rod 344 moves, it drives the base plate 2 to rotate along the first rotating shaft 331. When the rotation direction is counterclockwise, one end of the screen begins to separate from one end of the outer casing.

[0051] The third lead screw motor 422 continues to drive the cover plate 43 to move a small distance to the left, completely loosening the rigid connection between the screen and the casing.

[0052] The drive motor 462 drives the cover plate 43 to flip up, causing the screen to flip along one side of the outer casing, exposing the internal motherboard and ribbon cable. At this time, the staff can, as needed, loosen the ribbon cable connecting the screen and the motherboard and remove the screen and outer casing, or leave them as they are and directly repair the mobile phone on this device.

[0053] Additionally, it is worth noting that, such as Figure 9 As shown, this device can be installed in a frame, and the frame is covered by a cover 7. The cover 7 has a workbench 72 in front of the heating positioning module 3 and the disassembly module 4, which makes it convenient for the staff to operate directly on the workbench 72. The aforementioned button 71 can be provided on the side of the cover 7.

[0054] As can be seen from the above embodiments, by setting the positioning seat 1 and the heating positioning module 3, the mobile phone is heated when positioning the mobile phone, which helps to soften the adhesive connecting the screen and the shell, making the screen and the shell easier to separate and avoiding damage to the screen during disassembly.

[0055] While the disassembly module 4 holds the screen with the suction cup 41, it can move the screen horizontally, vertically, and rotate. Furthermore, by designing the execution steps of the linear execution component 42, it can be applied to various mobile phones of different specifications. When the manufacturer changes the type of mobile phone, he / she only needs to replace the positioning base 1, which greatly improves the versatility of the device and reduces the manufacturer's equipment costs.

[0056] The screen removal device can operate fully automatically, which greatly improves production efficiency and product yield.

[0057] Although this disclosure has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Because this disclosure can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. An automatic screen dismounting device, characterized in that, The device comprises: a positioning seat which is detachably arranged on a base plate and has a positioning groove for accommodating a rear shell of a mobile phone; a heating positioning module which is mounted on the base plate and comprises a plurality of heating assemblies arranged around the positioning seat and capable of being pressed towards the positioning seat under the driving of corresponding air cylinders; a detaching module which is rotatably arranged along one side of the positioning seat and comprises a suction cup matched with the shape of a screen of the mobile phone, a linear execution assembly for driving the suction cup to move along its X-axis and Z-axis, and a vacuum device in communication with the suction cup through a hose, the detaching module being rotatable to make the bottom surface of the suction cup flush with the upper surface of the mobile phone; a controller for controlling the plurality of air cylinders and the linear execution assembly to work according to preset steps, and a temperature controller for controlling the heating assemblies to heat along a preset curve; each of the plurality of heating assemblies comprises a heating block and a first sliding seat for bearing the heating block, the base plate is provided with first sliding rails matched with the plurality of first sliding seats respectively, and the plurality of air cylinders are mounted below the base plate and have output shafts connected to the corresponding first sliding seats, so that when the plurality of air cylinders drive the plurality of heating blocks to press towards the positioning seat, the plurality of heating blocks embrace the frame of the mobile phone; the device further comprises a base plate having a hollow area in which the base plate is mounted, first rotating shafts fixedly connected to the two sides of the base plate, first bearing seats provided on the base plate and matched with the first rotating shafts, a driving assembly provided below the base plate and used for driving the base plate to rotate along the first rotating shafts, a vernier connected to one end of the first rotating shaft located in the first bearing seat, and a scale provided on the first bearing seat and matched with the vernier, wherein the axis of the first rotating shaft is perpendicular to the axis of the detaching module which rotates along one side of the positioning seat in the horizontal space; the driving assembly comprises a first screw rod motor, a second sliding seat connected to the output shaft of the screw rod motor, a limiting seat for limiting the stroke of the second sliding seat, and a connecting rod hingedly connected to one end of the second sliding seat and to the other end of the base plate; the linear execution assembly is arranged on a cover plate, the suction cup is located below the cover plate and connected to the linear execution assembly, the device further comprises a base plate, and the two ends of the cover plate are provided with second rotating shafts on one side, the base plate is provided with second bearing seats connected to the second rotating shafts, one of the second rotating shafts is provided with a synchronous wheel, and the base plate is provided with a driving motor, the output shaft of the driving motor is connected to the synchronous wheel through a belt; the linear execution assembly comprises a second screw rod motor for driving the suction cup to move along its Z-axis and a third screw rod motor for driving the suction cup to move along its X-axis. The suction cup is installed under a mounting seat, the second lead screw motor is installed on a positioning plate, the driving end of the second lead screw motor is connected to the mounting seat through a screw nut seat after penetrating through the positioning plate, the two sides of the mounting seat are vertically fixed with second sliding rails, the positioning plate is provided with second sliding blocks matched with the second sliding rails, the positioning plate is connected to third sliding rails on the cover plate through third sliding blocks, and the third lead screw motor is installed on the cover plate and connected to the positioning plate through a screw nut.

2. The automatic screen dismounting device according to claim 1, characterized in that One end of another second rotating shaft is provided with a first induction sheet, and the base plate is provided with a first photoelectric sensor for sensing the rotating position of the first induction sheet.

3. The automatic screen dismounting device according to claim 2, characterized in that The base plate is provided with a mounting bracket, the mounting bracket is provided with an arc slot, the first photoelectric sensor has a plurality of first photoelectric sensors, and the plurality of first photoelectric sensors are installed in the arc slot.

4. The automatic screen dismounting device according to claim 1, characterized in that One side of the second sliding rail is provided with a second induction sheet, and the positioning plate is provided with a plurality of second photoelectric sensors for sensing the moving stroke of the second induction sheet.

Images