A positioning mechanism and method for automatic detection of touch screen

Abstract

The present invention discloses an alignment mechanism and method for automatic detection of a touch screen. The alignment mechanism includes a machine base and a table mounted on the machine base, and also includes a lateral pusher and a longitudinal pusher. The detection device of the touch screen is installed above the table, and a detection area is formed between the table and the detection device. The table outside the detection area is the alignment area. During the alignment process, the lateral pusher aligns the lateral position of the touch screen, and the longitudinal pusher pushes the touch screen into the top push cut-off plate of the detection area and aligns the longitudinal position of the touch screen. The present invention adopts an automated alignment method to accurately align the touch screen to the detection position, avoiding the error of manual alignment. Moreover, the mechanized alignment method is in place in one step, without the need for picketing and adjustment, which greatly speeds up the alignment efficiency and the detection process.

Description

Technical Field

[0001] The invention belongs to the field of electrical component detection, and specifically relates to a positioning mechanism and method for automatic touch screen detection Background Art

[0002] Touch screen, also known as "touch screen" or "touch panel", is an inductive liquid crystal display device that can receive input signals such as contacts. When the graphic button on the screen is touched, the tactile feedback system on the screen can drive various connection devices according to the pre-programmed program. It can be used to replace the mechanical button panel and create vivid audio and video effects through the liquid crystal display screen. As the latest computer input device, the touch screen is a simple, convenient and natural way of human-computer interaction. It gives multimedia a new look and is a very attractive new multimedia interactive device. It is mainly used in public information query, industrial control, military command, electronic games, multimedia teaching, etc.

[0003] The production process of touch screens often includes a testing process, which is used to detect defective touch screens so as to detect and deal with these defective touch screens as early as possible to prevent them from entering the market. At present, most manufacturers use manual placement and alignment methods. On the one hand, it is difficult to avoid human-generated alignment errors, which affects the detection effect and accuracy. On the other hand, the detection speed is slow, resulting in low touch screen production efficiency. In addition, workers need to be assigned to work on the job in real time, which is time-consuming and labor-intensive, and increases labor costs. Summary of the invention

[0004] The purpose of the present invention is to provide an alignment mechanism and method for automatic detection of a touch screen. In view of the defects of the alignment method in the existing detection process, an automated alignment method is adopted to accurately align the touch screen to the detection position, thereby avoiding the error of manual alignment. Moreover, the mechanized alignment method is completed in one step without the need for correction and adjustment, which greatly speeds up the alignment efficiency and the detection process.

[0005] In order to solve the above technical problems, the following technical solutions are adopted:

[0006] A positioning mechanism for automatic detection of a touch screen comprises a machine base and a table mounted on the machine base, and is characterized in that it also comprises a lateral pusher and a longitudinal pusher, a detection device of the touch screen is mounted above the table top, and a detection zone is formed between the table top and the detection device, and the table top outside the detection zone is the positioning zone; the lateral pusher aligns the lateral position of the touch screen, and the longitudinal pusher pushes the touch screen into a top push cut-off plate of the detection zone and aligns the longitudinal position of the touch screen.

[0007] Furthermore, the lateral pusher is arranged on the left and right sides of the table, including a lateral cylinder and a lateral push plate, and the lateral cylinder is connected to the lateral push plate through a lateral piston rod; the longitudinal pusher is arranged at the front end of the table, including a longitudinal cylinder and a longitudinal push plate, and the longitudinal cylinder is connected to the longitudinal push plate through a longitudinal piston rod. The lateral pushers are arranged on both sides, and the touch screen can be pushed to the horizontal detection position, which can be any position to the left, right or in the middle. The pushing method is flexible and diverse, which can meet different alignment requirements and is highly practical. The front end of the longitudinal push plate is arranged to facilitate pushing the touch screen into the detection area; both the lateral pusher and the longitudinal pusher adopt the structure of the cylinder and the push plate, which has the advantages of fast, direct and effective pushing action.

[0008] Furthermore, the lateral push plate includes an alignment section and a limit section. The alignment section moves in the alignment area, and the limit section moves in the detection area. The contact surfaces of the alignment section and the limit section are aligned with each other, and the height of the limit section matches the height of the detection area. The alignment section is used to push the touch screen to the lateral detection position. The limit section limits the lateral movement of the touch screen during the pushing process, and limits the lateral movement of the touch screen in the detection area, so as to ensure that the lateral position remains unchanged during the pushing and detection process, so as to achieve the purpose of precise positioning.

[0009] Furthermore, a linear displacement sensor is mounted on the transverse cylinder, and the linear displacement sensor is connected to the transverse push plate. The linear displacement sensor is used to monitor the displacement of the transverse push plate in real time, so as to control its push position, thereby achieving the purpose of positioning the touch screen to any position in the transverse direction; for example, if the touch screen needs to be positioned to the x position in the transverse direction, the left transverse push plate needs to be displaced by s1, and the right transverse push plate needs to be displaced by s2. After the left linear displacement sensor detects the displacement of the left transverse push plate by s1, the controller automatically closes the left transverse cylinder according to the signal, and after the right linear displacement sensor detects the displacement of the right transverse push plate by s2, the controller automatically closes the right transverse cylinder according to the signal, thereby positioning the touch screen to the x position in the transverse direction.

[0010] Furthermore, an electromagnet and an electromagnet circuit are installed inside the longitudinal push plate, and the touch screen is sucked by the electromagnet and pulled out to the alignment area. The electromagnet is controlled by power on and off. When powered on, the electromagnet has a strong magnetic adsorption force, which can suck the iron frame of the touch screen, making it easy to pull the touch screen out of the detection area.

[0011] Furthermore, the longitudinal cylinder is installed on the turntable and can be driven to rotate by the turntable. The turntable structure can change the angle of the longitudinal cylinder, thereby changing the direction of the longitudinal push plate, so that it can face the table or the conveyor line of the touch screen. With the cooperation of the above-mentioned electromagnet, the touch screens can be grabbed one by one to the table, and the touch screens after detection can be put back to the conveyor line, realizing automatic continuous positioning detection of the touch screen, which greatly improves the detection efficiency.

[0012] The alignment method of the alignment mechanism is characterized in that the alignment mechanism is equipped with an operation panel, through which the alignment is started with one button, the displacement size of the lateral pusher is set specifically, and the touch screen is moved in or out, including the following steps:

[0013] (1) Measure the size parameters of the batch of touch screens to be tested, determine the size range of the detection area, and set the displacements s1 and s2 of the left lateral pusher and the right lateral pusher according to the size range;

[0014] (2) Move into the touch screen: Activate the move-in key on the operation panel to move into the touch screen;

[0015] (3) Lateral alignment: The lateral pushers on both sides are started, and according to the displacement set in step (1), the left lateral push plate s1 and the right lateral push plate s2 are moved respectively. The touch screen is aligned in the lateral direction and clamped by the lateral push plates on the left and right sides;

[0016] (4) Longitudinal alignment: The longitudinal pusher is started, and the longitudinal push plate pushes the touch screen into the detection area and against the top push cut-off plate, and the touch screen is aligned in the longitudinal direction;

[0017] (5) After removing the touch screen, repeat steps (2) to (4) to perform alignment detection on the next touch screen.

[0018] After optimization, step (2) moves into the touch screen, first the turntable is started and rotated 180 degrees, after rotating into place, the longitudinal push plate is placed on the touch screen conveyor line, the electromagnet is energized, the longitudinal cylinder is started, the longitudinal push plate gradually extends outward, gradually approaches the touch screen during the extension process, and the touch screen is firmly sucked by the electromagnet, the longitudinal push plate retracts and resets, the turntable is started, rotates 180 degrees again, the longitudinal pusher is reset, the electromagnet is powered off, and the touch screen is moved into the alignment area of ​​the table. In moving the touch screen, the turntable, the cylinder and the electromagnet cooperate with each other to realize the automated action of grabbing, transferring and releasing the touch screen, completing the mechanized process of moving the touch screen into the table, without the need to manually place the touch screen on the table, saving time and effort, avoiding delays and terminations caused by human negligence, realizing continuous positioning automatic detection, and significantly improving efficiency.

[0019] After optimization, in step (5) of removing the touch screen, the horizontal push plate is first retracted and reset, the electromagnet is turned on, the touch screen is sucked by the longitudinal push plate, and then the longitudinal push plate is retracted and reset; after resetting, the turntable is started and rotated 180 degrees, after rotating to the right position, the longitudinal push plate is placed on the touch screen conveyor line, the longitudinal push plate gradually extends outward, after extending to a certain length, the electromagnet is powered off, the touch screen is returned to the original position, the longitudinal push plate is retracted and reset, the turntable is started, and it is rotated 180 degrees again, and the longitudinal pusher is reset. In removing the touch screen, the turntable, the cylinder and the electromagnet cooperate with each other to realize the automated action of grabbing, transferring and releasing the touch screen, completing the mechanized process of removing the touch screen, without the need to manually retract the touch screen, saving time and effort, and avoiding delays and terminations caused by human negligence. After being put back, the next touch screen can be moved in for positioning detection, which significantly speeds up efficiency.

[0020] After optimization, the longitudinal push plate, the transverse push plate and the top push cut-off plate are all provided with pressure sensors, and the maximum pressure threshold in the alignment is set through the operation panel. When the pressure exceeds the maximum pressure threshold, the transverse cylinder or the longitudinal cylinder is closed accordingly. The pressure sensor detects the pressure on each push plate and the top push cut-off plate in real time, and indirectly obtains the pressure on each frame surface of the touch screen. When the pressure is too high, the cylinders are stopped in time, thereby stopping the force of each push plate on the touch screen to prevent it from being damaged by excessive pressure. It is a protection mechanism in the positioning process.

[0021] The above technical solution has the following beneficial effects:

[0022] The present invention is a positioning mechanism and method for automatic detection of a touch screen. Aiming at the defects of the existing positioning method in the detection process, an automated positioning method is adopted to accurately position the touch screen to the detection position, avoiding the error of manual positioning. Moreover, the mechanized positioning method is one-step, without the need for inspection and adjustment, which greatly speeds up the positioning efficiency and the detection process. The specific beneficial effects are as follows:

[0023] 1. The present invention uses the lateral pushers on both sides and the longitudinal pusher at the front end as the power device to position the touch screen in sequence in the lateral and longitudinal directions respectively, with accurate positioning, and synchronous limiting after positioning, to avoid the problem of displacement after positioning by other positioning mechanisms. The present invention adopts an automated alignment method to accurately align the touch screen to the detection position, avoiding the error of manual alignment; and the mechanized alignment method is in place in one step, without the need for inspection and adjustment, which greatly speeds up the alignment efficiency and the detection process.

[0024] 2. The linear displacement sensor is used to monitor the displacement of the lateral push plate in real time, so as to control its push position, thereby achieving the purpose of positioning the touch screen to any position in the lateral direction; for example, if the touch screen needs to be positioned to the lateral x position, the left lateral push plate needs to be displaced s1, and the right push plate needs to be displaced s2. After the left linear displacement sensor detects the displacement s1 of the left lateral push plate, the controller automatically closes the left lateral cylinder according to the signal. After the right linear displacement sensor detects the displacement s2 of the right lateral push plate, the controller automatically closes the right lateral cylinder according to the signal, thereby positioning the touch screen to the lateral x position.

[0025] 3. The turntable structure can change the longitudinal cylinder angle, thereby changing the direction of the longitudinal push plate, so that it can face the table or the conveyor line of the touch screen. With the cooperation of the above-mentioned electromagnet, the touch screens can be grabbed one by one to the table, and the tested touch screens can be put back on the conveyor line, realizing automatic continuous positioning and detection of the touch screen, which greatly improves the detection efficiency.

[0026] 4. In step 1, the present invention determines the measurement area of ​​the current batch through conventional measurement, and performs targeted positioning according to the measurement area to ensure that the areas to be measured are detected one by one, thereby improving the detection effect; it is suitable for touch screens of different batches, different specifications, and different shapes, and has a wide range of applications.

[0027] 5. The present invention starts with lateral positioning and ends with longitudinal positioning, and can quickly and accurately complete automatic positioning without positioning piece deviation.

[0028] 6. Automatic and continuous positioning and detection of the touch screen are achieved through the steps of moving out of the touch screen and moving in the touch screen, which greatly improves the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described below in conjunction with the accompanying drawings:

[0030] Figure 1 It is a structural schematic diagram of the alignment mechanism;

[0031] Figure 2 It is a schematic diagram of the connection between the table and the detection device;

[0032] Figure 3 for Figure 2 Schematic diagram of the A direction;

[0033] Figure 4 It is a structural schematic diagram of a lateral pusher;

[0034] Figure 5 It is a structural schematic diagram of a longitudinal pusher;

[0035] Figure 6 is a schematic diagram of the structure of the turntable;

[0036] Figure 7 This is the installation diagram of the alignment mechanism and the touch screen conveyor line. DETAILED DESCRIPTION

[0037] like Figures 1 to 7 As shown, a positioning mechanism for automatic detection of a touch screen includes a base 1 and a table 2 installed on the base 1. The base 1 includes a bottom plate 4 and legs 3. The legs 3 are provided with three legs, the lower ends of which are installed on the bottom plate 4 and the upper ends are connected to the table 2. A detection device 5 for a touch screen 29 is installed above the table 2. The detection device 5 is connected to the table 2 and the bottom plate 4 through a certain installation and fixing structure, so as to be fixed above the table 2 (such as Figure 3 As shown). A detection area 17 is formed between the table 2 and the detection device 5. The detection area 17 is the gap between the table 2 and the detection device 5, and its height is 11-22 cm. The table 2 outside the detection area 17 is a positioning area 18.

[0038] The alignment mechanism also includes a lateral pusher 6 and a longitudinal pusher 11. The lateral pushers 6 are arranged on the left and right sides of the table 2. The lateral positions of the touch screen 29 are aligned by the lateral pushers 6 on both sides; the longitudinal pusher 11 is arranged at the front end of the table 2. The longitudinal pusher 11 pushes the touch screen 29 into the top push cut-off plate 15 of the detection area 17, thereby aligning the longitudinal position of the touch screen 29. After the lateral position and the longitudinal position are positioned, the touch screen 29 is in the detection position. The present invention uses the lateral pushers 6 on both sides and the longitudinal pusher 11 at the front end as power devices to position the touch screen 29 in sequence in the lateral and longitudinal directions respectively, accurately positioning, and performing synchronous limiting after positioning to avoid the problem of displacement after positioning by other positioning mechanisms. The present invention adopts an automated alignment method to accurately align the touch screen 29 to the detection position, avoiding the error of artificial alignment; and the mechanized alignment method is in place in one step, without the need for picketing and adjustment, which greatly speeds up the alignment efficiency and the detection process.

[0039] The lateral pushers 6 are arranged on both sides, and the touch screen 29 can be pushed to the horizontal detection position, which can be any position to the left, right or middle. The pushing method is flexible and diverse, which can meet different alignment requirements and has strong practicality. The front end of the longitudinal push plate is arranged to facilitate pushing the touch screen 29 into the detection area 17.

[0040] The lateral pusher 6 includes a lateral cylinder 9 and a lateral push plate 7, and the lateral cylinder 9 is connected to the lateral push plate 7 through a lateral piston rod 8; the longitudinal pusher 11 is arranged at the front end of the table 2, and includes a longitudinal cylinder 12 and a longitudinal push plate 13, and the longitudinal cylinder 12 is connected to the longitudinal push plate 13 through a longitudinal piston rod 14. Both the lateral pusher 6 and the longitudinal pusher 11 adopt the structure of a cylinder and a push plate, and have the advantages of implementing a push action quickly, directly and effectively.

[0041] The lateral push plate 7 includes a positioning section 19 and a limiting section 20 (such as Figure 4 As shown in the figure, the alignment section 19 moves in the alignment area 18, and the limiting section 20 moves in the detection area 17. The contact surfaces of the alignment section 19 and the limiting section 20 with the touch screen 29 are aligned with each other, so that the limiting section 20 and the alignment section 19 reach the same lateral position simultaneously and synchronously; the height of the limiting section 20 matches the height of the detection area 17, so that the limiting section 20 can just move laterally in the detection area 17. The alignment section 19 is used to push the touch screen 29 to the lateral detection position. The limiting section 20 limits its lateral movement during the process of pushing the touch screen 29, and limits the lateral movement of the touch screen 29 in the detection area 17, so as to ensure that its lateral position remains unchanged during the pushing and detection process, so as to achieve the purpose of precise positioning.

[0042] A linear displacement sensor 9 is installed on the lateral cylinders 9 on both sides. The pull rod of the linear displacement sensor 9 is connected to the lateral push plate 7, so that the pull rod moves with the lateral push plate 7, thereby detecting the displacement of the lateral push plate 7 in real time. The linear displacement sensor 9 is used to monitor the displacement of the lateral push plate 7 in real time, so as to control its push position, thereby achieving the purpose of positioning the touch screen 29 to any position in the horizontal direction; for example, if the touch screen 29 needs to be positioned to the x position in the horizontal direction, the left lateral push plate 7 needs to be displaced by s1, and the right push plate needs to be displaced by s2. After the left linear displacement sensor 9 detects that the left lateral push plate 7 has displaced by s1, the controller automatically closes the left lateral cylinder 9 according to the signal, and after the right linear displacement sensor 9 detects that the right lateral push plate 7 has displaced by s2, the controller automatically closes the right lateral cylinder 9 according to the signal, thereby positioning the touch screen 29 to the x position in the horizontal direction.

[0043] The electromagnet 21 and the electromagnet circuit are installed inside the longitudinal push plate 13. The electromagnet circuit supplies power to the electromagnet 21, which attracts the iron frame of the touch screen 29 and pulls the touch screen 29 from the detection area 17 to the alignment area 18. The electromagnet 21 is controlled by power on and power off. In the power on state, the electromagnet 21 has a strong magnetic adsorption force, which can attract the iron frame of the touch screen 29, making it convenient to pull the touch screen 29 out of the detection area 17 and then transfer it.

[0044] The longitudinal cylinder 12 is mounted on the turntable 16 and can be driven to rotate by the turntable 16. The turntable 16 includes a turntable motor 23, a reducer 24, a driving gear 25, a turntable 26, and a turntable bracket 27; the turntable motor 23 is a stepping motor, which is easy to control. The turntable motor 23 is connected to the reducer 24, the reducer 24 is connected to the driving gear 25, a gear ring is installed on the circumference of the turntable 26, and the gear ring and the driving gear 25 are meshed with each other. The turntable bracket 27 is used to install the turntable 26, and the turntable 26 is fixedly connected to the longitudinal cylinder 12. After the turntable motor 23 is started, it is converted into a slower speed under the deceleration effect of the reducer 24, and then the meshing effect of the driving gear 25 and the gear ring drives the turntable 26 to rotate, thereby driving the longitudinal cylinder 12 to rotate. The turntable 16 structure can change the angle of the longitudinal cylinder 12, thereby changing the direction of the longitudinal push plate 13, so that it can face the table 2 or the conveyor line 28 of the touch screen 29. With the cooperation of the above-mentioned electromagnet 21, the touch screens 29 can be grabbed one by one to the table 2, and the touch screens 29 after detection can be put back on the conveyor line 28, thereby realizing automatic continuous positioning detection of the touch screen 29, which greatly improves the detection efficiency.

[0045] like Figures 1 to 7 As shown, based on the above alignment mechanism, the present invention also includes an alignment method of the alignment mechanism, the alignment mechanism is equipped with an operation panel, through which the alignment is started with one button, the displacement size of the lateral pusher 6 is set in a targeted manner, and the touch screen 29 is moved in or out, and the maximum pressure threshold received by the touch screen 29 can also be set to protect the touch screen 29, including the following steps:

[0046] (1) Measure the size parameters of the touch screen 29 of the batch to be tested, determine the size range of the detection area 17, and set the displacements s1 and s2 of the left lateral pusher 6 and the right lateral pusher 6 according to the size range;

[0047] (2) Start the move key on the operation panel to move into the touch screen 29:

[0048] First, the turntable 16 is started and rotated 180 degrees. After the rotation is in place, the longitudinal push plate 13 is placed on the conveying line 28 of the touch screen 29, the electromagnet 21 is energized, the longitudinal cylinder 12 is started, the longitudinal push plate 13 gradually extends outward, gradually approaches the touch screen 29 during the extension process, and firmly absorbs the touch screen 29 with the help of the electromagnet 21, the longitudinal push plate 13 retracts and resets, the turntable 16 is started, and rotates 180 degrees again, the longitudinal pusher 11 is reset, the electromagnet 21 is powered off, and the touch screen 29 is moved into the alignment area 18 of the table 2. In the process of moving the touch screen 29, the turntable 16, the cylinder and the electromagnet 21 cooperate with each other to realize the automatic action of grabbing, transferring and releasing the touch screen 29, and complete the mechanized process of moving the touch screen 29 into the table 2, without the need to manually put the touch screen 29 onto the table 2, saving time and labor, avoiding delays and terminations caused by human negligence, realizing continuous positioning automatic detection, and significantly improving efficiency.

[0049] (3) Horizontal alignment:

[0050] The lateral pushers 6 on both sides are started, and according to the set displacement of step (1), the left lateral pusher plate 7s1 and the right lateral pusher plate 7s2 are moved respectively, and the touch screen 29 is aligned in the lateral direction and clamped by the alignment sections 19 of the lateral pusher plates 7 on the left and right sides. After clamping, the lateral pushers 6 are closed;

[0051] (4) Longitudinal alignment:

[0052] The longitudinal pusher 11 is started, and the longitudinal push plate 13 pushes the touch screen 29 into the detection area 17 and abuts against the top push cut-off plate 15. The touch screen 29 is aligned in the longitudinal direction, and the longitudinal push plate 13 clamps the touch screen 29. After clamping, the longitudinal pusher 11 is closed.

[0053] (5) After the touch screen 29 is removed:

[0054] First, the horizontal push plate 7 is retracted and reset, and the electromagnet 21 is turned on, so that the touch screen 29 is sucked by the longitudinal push plate 13, and then the longitudinal push plate 13 is retracted and reset; after resetting, the turntable 16 is started and rotated 180 degrees. After rotating to the right position, the longitudinal push plate 13 is placed on the touch screen 29 conveying line 28, and the longitudinal push plate 13 gradually extends outward. After extending to a certain length, the electromagnet 21 is powered off, the touch screen 29 is returned to the original position, the longitudinal push plate 13 is retracted and reset, the turntable 16 is started, and rotated 180 degrees again, and the longitudinal pusher 11 is reset. In the process of removing the touch screen 29, the turntable 16, the cylinder and the electromagnet 21 cooperate with each other to realize the automatic action of grasping, transferring and releasing the touch screen 29, and complete the mechanized process of removing the touch screen 29, without the need to manually retract the touch screen 29, saving time and effort, avoiding delays and terminations caused by human negligence, and after being put back, the next touch screen 29 can be moved in for positioning detection, which significantly speeds up efficiency.

[0055] (6) Repeat steps (2) to (5) to perform alignment detection on the next touch screen 29.

[0056] In addition, the present invention sets pressure sensors on the longitudinal push plate 13, the transverse push plate 7 and the top push cut-off plate 15, and sets the maximum pressure threshold in the alignment through the operation panel. In the alignment process, the pressure received by each surface of the touch screen 29 is detected in real time. When the pressure exceeds the maximum pressure threshold, the transverse cylinder 9 or the longitudinal cylinder 12 is closed accordingly. The pressure sensor detects the pressure received by each push plate and the top push cut-off plate 15 in real time, and indirectly obtains the pressure received by each frame surface of the touch screen 29. When the pressure is too large, the cylinders are stopped in time, thereby stopping the force applied by each push plate to the touch screen 29, preventing it from being damaged by excessive pressure, which is a protection mechanism in the positioning process.

[0057] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. A positioning mechanism for automatic detection of a touch screen, comprising a base and a table mounted on the base, characterized in that: The touch screen also includes a horizontal pusher and a vertical pusher. The detection device of the touch screen is installed above the table, and a detection area is formed between the table and the detection device. The table outside the detection area is a positioning area. The horizontal pusher aligns the horizontal position of the touch screen, and the vertical pusher pushes the touch screen into the top push cut-off plate of the detection area and aligns the vertical position of the touch screen. The horizontal pusher is arranged on the left and right sides of the table, and includes a horizontal cylinder and a horizontal push plate. The horizontal cylinder is connected to the horizontal push plate through a horizontal piston rod. The vertical pusher is arranged at the front end of the table, and includes a vertical cylinder and a vertical push plate. The longitudinal cylinder is connected to the longitudinal push plate through a longitudinal piston rod; the transverse push plate includes an alignment section and a limit section, the alignment section moves in the alignment area, the limit section moves in the detection area, the contact surfaces of the alignment section and the limit section are aligned with each other, and the height of the limit section matches the height of the detection area; a linear displacement sensor is mounted on the transverse cylinder, and the linear displacement sensor is connected to the transverse push plate; an electromagnet and an electromagnet circuit are installed inside the longitudinal push plate, the touch screen is sucked by the electromagnet, and the touch screen is pulled out to the alignment area; the longitudinal cylinder is mounted on a turntable and can be driven to rotate by the turntable.

2. The alignment mechanism for touch screen automatic detection according to claim 1, characterized in that: The alignment mechanism is equipped with an operation panel, through which the alignment is started with one button, the displacement size of the lateral pusher is set specifically, and the touch screen is moved in or out, including the following steps: (1) Measure the size parameters of the touch screen batch to be tested, determine the size range of the detection area, and set the displacements s1 and s2 of the left lateral pusher and the right lateral pusher according to the size range; (2) Move into the touch screen: Start the move-in key on the operation panel to move into the touch screen; (3) Lateral alignment: The lateral pushers on both sides are started, and according to the set displacement in step (1), the left lateral push plate s1 and the right lateral push plate s2 are moved respectively. The touch screen is aligned in the lateral direction and clamped by the lateral push plates on the left and right sides. (4) Longitudinal alignment: The longitudinal pusher is started, and the longitudinal push plate pushes the touch screen into the detection area and against the top push cut-off plate, and the touch screen is aligned in the longitudinal direction; (5) After removing the touch screen, repeat steps (2) to (4) to perform alignment inspection on the next touch screen.

3. The alignment mechanism for touch screen automatic detection according to claim 2, characterized in that: In the step (2), the touch screen is moved into place by first starting the turntable and rotating 180 degrees. After the turntable is in place, the longitudinal push plate is placed on the touch screen conveyor line, the electromagnet is energized, the longitudinal cylinder is started, and the longitudinal push plate gradually extends outward. During the extension process, the longitudinal push plate gradually approaches the touch screen and is firmly attracted to the touch screen by the electromagnet. The longitudinal push plate retracts and resets, the turntable is started, and rotates 180 degrees again. The longitudinal pusher is reset, the electromagnet is de-energized, and the touch screen is moved into the alignment area of ​​the table.

4. The alignment mechanism for touch screen automatic detection according to claim 2, characterized in that: In the step (5), the touch screen is removed, the horizontal push plate is first retracted and reset, the electromagnet is turned on, the touch screen is sucked by the longitudinal push plate, and then the longitudinal push plate is retracted and reset; after resetting, the turntable is started and rotated 180 degrees. After rotating to the right position, the longitudinal push plate is placed on the touch screen conveyor line, and the longitudinal push plate is gradually extended outward. After extending to a certain length, the electromagnet is powered off, the touch screen is returned to its original position, the longitudinal push plate is retracted and reset, the turntable is started, and rotated 180 degrees again, and the longitudinal pusher is reset.

5. The alignment mechanism for touch screen automatic detection according to claim 2, characterized in that: The longitudinal push plate, the transverse push plate and the top push cut-off plate are all provided with pressure sensors, and the maximum pressure threshold in the alignment is set through the operation panel. When the pressure exceeds the maximum pressure threshold, the transverse cylinder or the longitudinal cylinder is closed accordingly.

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