A mobile phone screen detection device

Abstract

The present invention discloses a mobile phone screen detection device, which includes a frame. A workbench surface is arranged on the upper end surface of the frame. A rotatable rotating frame is arranged on the frame, and a scribing component is arranged on the rotating frame. The scribing component includes an electric push rod and a plurality of scribing pens. The scribing pens are installed at the lower end of the electric push rod. Each scribing pen includes a pen rod, a first magnet, a second magnet and a fixing part. An axial moving hole is arranged inside the fixing part. The first magnet is installed at one end of the pen rod located inside the moving hole, and the second magnet is installed at the bottom of the moving hole. A plurality of mobile phone screen fixing components are arranged on the workbench surface. When the rotating frame rotates, it drives the scribing pens to perform scribing tests on the mobile phone screens. In the present invention, for the scribing pen composed of the pen rod, the first magnet, the second magnet and the fixing part, when pressing down, the repulsive force between the first magnet and the second magnet can form a certain buffer, so that the scribing pen is in flexible contact with the mobile phone screen, reducing the probability of damage to the mobile phone screen.

Description

Technical Field

[0001] The present invention relates to the technical field of detection devices, and particularly to a mobile phone screen detection device. Background Art

[0002] The mobile phone screen, also known as the display screen, is used to display images and colors. With the gradual popularity of color screens in mobile phones, the screen material has become increasingly important. The color screens of mobile phones vary due to different LCD qualities and R & D technologies. Generally speaking, the more colors that can be displayed, the more complex images can be shown, and the more abundant the levels of the picture are.

[0003] After a mobile phone is produced, relevant tests need to be carried out on the mobile phone screen before it can be used, including a scribing test. The traditional detection device performs scribing operations through a robotic arm. When scribing, first control the scribing pen to press down to contact the mobile phone screen and then perform the scribing operation. When the scribing pen presses down, since it directly makes rigid contact with the mobile phone screen, it is easy to damage the mobile phone screen. Summary of the Invention

[0004] The problem to be solved by the present invention is: to provide a mobile phone screen detection device. The scribing pen composed of a pen rod, a first magnet, a second magnet and a fixing part can form a certain buffer by the repulsive force between the first magnet and the second magnet when pressing down, so that the contact between the scribing pen and the mobile phone screen is flexible, reducing the probability of damaging the mobile phone screen.

[0005] The technical solution provided by the present invention to solve the above problems is: a mobile phone screen detection device, including a frame, on the upper end surface of which a workbench surface is provided; a rotatable rotating frame is provided on the frame, and a scribing component is provided on the rotating frame;

[0006] The scribing component includes an electric push rod and a plurality of scribing pens. The scribing pens are installed at the lower end of the electric push rod. The scribing pen includes a pen rod, a first magnet, a second magnet and a fixing part. An axial moving hole is provided inside the fixing part. One end of the pen rod extends into the moving hole. The first magnet is installed at one end of the pen rod located inside the moving hole. The second magnet is installed at the bottom of the moving hole. The first magnet and the second magnet are arranged with the same poles repelling each other;

[0007] A plurality of mobile phone screen fixing components are provided on the workbench surface. When the rotating frame rotates, it drives the scribing pen to perform a scribing test on the mobile phone screen.

[0008] Preferably, an installation block is provided at the lower end of the electric push rod. A receiving cavity is provided inside the installation block. One end of the fixing part is hinged inside the receiving cavity. Two first springs are symmetrically arranged on both sides of the fixing part. The end of the first spring away from the fixing part is connected to the wall of the receiving cavity; the first spring is used to provide a rebounding force when the fixing part rotates.

[0009] Preferably, guide blocks are arranged on both sides of the mounting block. Guide holes are arranged on the guide blocks, and guide rods are arranged in the guide holes. The upper ends of the guide rods are connected to the rotating frame.

[0010] Preferably, the mobile phone screen fixing assembly includes a bottom plate and a limit fixing assembly mounted on the bottom plate; the limit fixing assembly includes a clamping airbag and two L-shaped plates. The two L-shaped plates are symmetrically mounted on both sides of the upper end surface of the bottom plate. The two L-shaped plates and the bottom plate form a convex-shaped fixing cavity. The clamping airbag is adapted to the shape of the fixing cavity, and the clamping airbag is communicated with an external air source.

[0011] Preferably, the clamping airbag includes a horizontal section and L-shaped limiting sections arranged at both ends of the horizontal section; the L-shaped limiting sections include a first limiting section and a second limiting section. A corrugated section is arranged at the connection between the first limiting section and the second limiting section, and the corrugated section can be unfolded when inflated.

[0012] Preferably, the limit fixing assembly further includes a pressure relief mechanism for relieving pressure when the air pressure in the clamping airbag is too high; the pressure relief mechanism includes an air outlet pipe, a valve seat, a piston and a second spring. An activity cavity is arranged in the valve seat. The piston is movably mounted in the activity cavity. One end of the air outlet pipe is connected to the clamping airbag, and the other end is communicated with the activity cavity. One end of the second spring is connected to the end of the piston away from the air outlet pipe, and the other end is connected to the bottom of the activity cavity. A vertical pressure relief hole is arranged on the valve seat, and the pressure relief hole is communicated with the activity cavity. When the air pressure in the clamping airbag is too high, the gas in the clamping airbag squeezes the piston to move in the activity cavity, and then the gas flows out from the pressure relief hole.

[0013] Preferably, an air vent pipe is further arranged in the valve seat. An air inlet pipe is arranged on the clamping airbag. One end of the air inlet pipe away from the clamping airbag is communicated with the air vent pipe, and a control valve is arranged on the air vent pipe.

[0014] Preferably, the pressure relief mechanism further includes a transmission assembly. When the piston moves, it drives the transmission assembly to operate, and then drives the control valve to control the on-off of the air inlet pipe.

[0015] Preferably, the transmission assembly includes a transmission rack and a transmission gear. An installation cavity is arranged in the valve seat, and the installation cavity is communicated with the activity cavity. The transmission rack is horizontally arranged at one end of the piston, and the transmission gear is rotatably arranged in the installation cavity. The transmission gear is in transmission connection with the control rod of the control valve.

[0016] Preferably, a first synchronous wheel is coaxially arranged on the transmission gear, and a second synchronous wheel is coaxially arranged on the control rod of the control valve. The first synchronous wheel and the second synchronous wheel are connected by a synchronous belt.

[0017] Compared with the prior art, the advantages of the present invention are as follows: The scribing pen composed of a pen shaft, a first magnet, a second magnet, and a fixing part can form a certain buffer by the repulsive force between the first magnet and the second magnet when pressed down, so that the scribing pen is in flexible contact with the mobile phone screen, reducing the probability of damage to the mobile phone screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present invention and form a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0019] Figure 1 is the front view of the present invention;

[0020] Figure 2 is the top view of the present invention after removing the rotating frame;

[0021] Figure 3 is the present invention Figure 1 the enlarged schematic view of part A in

[0022] Figure 4 is the cross-sectional view of the mounting block and the scribing pen.

[0023] Figure 5 is the front view of the mobile phone screen fixing component of the present invention;

[0024] Figure 6 is the top view of the mobile phone screen fixing component of the present invention;

[0025] Figure 7 is the cross-sectional view of the pressure relief mechanism of the present invention;

[0026] Figure 8 is the cross-sectional view of the pressure relief mechanism of the present invention when relieving pressure;

[0027] Figure 9 is Figure 5 the enlarged schematic view of part A in

[0028] Figure 10 is the schematic view of the present invention when fixing the mobile phone screen.

[0029] Reference Numerals in the Drawings: 1. L-shaped plate; 2. bottom plate; 3. valve seat; 4. clamping airbag; 5. limiting plate; 6. corrugated section; 7. pressure relief hole; 8. movable cavity; 9. second spring; 10. installation cavity; 11. transmission gear; 12. first synchronous pulley; 13. ventilation pipe; 14. control valve; 15. second synchronous pulley; 16. intake pipe; 17. exhaust pipe; 18. piston; 19. annular sealing ring; 20. transmission rack; 21. first limiting section; 22. second limiting section; 23. mobile phone screen; 24. synchronous belt; 25. frame; 26. rotating frame; 27. accommodating cavity; 28. motor; 29. workbench surface; 30. electric push rod; 31. guide rod; 32. guide block; 33. mounting block; 34. fixing part; 35. pen rod; 36. first magnet; 37. second magnet; 38. movable hole; 39. first spring. Detailed Embodiment

[0030] The following will, in conjunction with the drawings and embodiments, elaborate on the embodiments of the present invention in detail, so as to fully understand the implementation process of how the present invention uses technical means to solve technical problems and achieve technical effects and implement accordingly.

[0031] In the description of the present invention, it should be noted that for orientation terms, such as terms "center", "horizontal", "vertical", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and position relationships indicated are based on the orientation or position relationships shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present invention.

[0032] In addition, for terms "first" and "second", they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "several" is two or more, unless otherwise specifically and clearly defined.

[0033] In the present invention, unless otherwise clearly specified and limited, for terms "assembled", "connected", "joined", they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can also be a mechanical connection; it can be directly connected, or connected through an intermediate medium, and can be internally connected and communicated between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] It should be understood that when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, wholes, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0035] It should also be understood that the terms used in the description of the embodiments of the present invention herein are for the purpose of describing specific embodiments only and are not intended to limit the embodiments of the present invention. As used in the description of the embodiments of the present invention and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" are intended to include the plural forms.

[0036] As shown in the accompanying drawings for specific embodiments of the present invention, a mobile phone screen detection device includes a frame 25, and a workbench surface 29 is provided on the upper end surface of the frame 25; a rotatable rotating frame 26 is provided on the frame 25, and a scribing assembly is provided on the rotating frame 26;

[0037] The scribing assembly includes an electric push rod 30 and a plurality of scribing pens. The scribing pens are installed at the lower end of the electric push rod 30. The scribing pen includes a pen rod 35, a first magnet 36, a second magnet 37, and a fixing portion 34. An axial moving hole 38 is provided inside the fixing portion 34. One end of the pen rod 35 extends into the moving hole 38. The first magnet 36 is installed at one end of the pen rod 35 located inside the moving hole 38. The second magnet 37 is installed at the bottom of the moving hole 38. The first magnet 36 and the second magnet 37 are arranged with the same poles repelling each other;

[0038] A plurality of mobile phone screen fixing components 23 are provided on the workbench surface 29. When the rotating frame 26 rotates, it drives the scribing pen to perform a scribing test on the mobile phone screen 23.

[0039] Furthermore, an installation block 33 is provided at the lower end of the electric push rod 30. A receiving cavity 27 is provided inside the installation block 33. One end of the fixing portion 34 is hinged inside the receiving cavity 27. Two first springs 39 are symmetrically arranged on both sides of the fixing portion 34. The end of the first spring 39 away from the fixing portion 34 is connected to the wall of the receiving cavity 27; the first spring 39 is used to provide a rebounding force when the fixing portion 34 rotates.

[0040] When the mobile phone screen is fixed, due to problems with the fixture or the staff, the mobile phone screen may be fixed unevenly, that is, one side is higher than the other. When the scribing pen scribes back and forth on the mobile phone screen, it is easy to damage the higher side of the mobile phone screen. Through the above technical solution, when scribing, if the mobile phone screen is uneven, when scribing on the higher side of the mobile phone screen, the scribing pen will compress the first spring and become inclined, which can effectively prevent damage to the mobile phone screen.

[0041] Wherein, in order to prevent the installation block from being displaced during the up and down movement, guide blocks 32 are arranged on both sides of the installation block 33. Guide holes are arranged on the guide blocks 32, and guide rods 31 are arranged in the guide holes. The upper end of the guide rod 31 is connected to the rotating frame 26, and the guiding of the operation of the installation block is realized through the cooperation between the guide rod and the guide block.

[0042] Specifically, the mobile phone screen fixing component includes a bottom plate 2 and a limit fixing component installed on the bottom plate 2; the limit fixing component includes a clamping airbag 4 and two L-shaped plates 1. The two L-shaped plates 1 are symmetrically installed on both sides of the upper end surface of the bottom plate 2. The two L-shaped plates 1 and the bottom plate 2 form a convex-shaped fixing cavity. The clamping airbag 4 is adapted to the shape of the fixing cavity, and the clamping airbag 4 is communicated with an external air source.

[0043] By providing the bottom plate, two L-shaped plates and the clamping airbag, when fixing the mobile phone, control the external air source to ventilate the clamping airbag. After the clamping airbag is ventilated, it expands. Due to the limitation of the bottom plate and the two L-shaped plates on both sides, the clamping airbag can only expand in the direction away from the bottom plate and the L-shaped plates, thereby realizing the limit fixation of the mobile phone in both the horizontal and vertical directions at the same time. The fixation is more convenient. At the same time, the clamping airbag has a certain buffering effect, which can form a flexible fixation on the mobile phone screen, thereby effectively reducing the probability of damage to the mobile phone screen. And because the clamping airbag has a certain deformation ability, this solution can fix mobile phone screens of various widths and thicknesses, and has high versatility.

[0044] Wherein, in order to more conveniently position the mobile phone screen, a limit plate is further arranged on one side of the bottom plate, and the limit plate is perpendicular to the two L-shaped plates.

[0045] When fixing the mobile phone screen, first insert the mobile phone screen into the fixing cavity from one side of the bottom plate until one side of the mobile phone screen contacts the limiting plate. Then, control an external air source to ventilate the clamping airbag. After the clamping airbag is ventilated, it expands. Due to the limitation of the bottom plate and the two L-shaped plates on both sides, the clamping airbag can only expand in the direction away from the bottom plate and the L-shaped plates, thereby realizing the limit fixation of the mobile phone in both the horizontal and vertical directions at the same time. The fixation is more convenient. At the same time, the clamping airbag has a certain buffering effect, which can effectively reduce the probability of damage to the mobile phone screen. And, due to the setting of the clamping airbag, this solution can fix mobile phone screens with various widths and thicknesses, that is, this solution has high general performance.

[0046] Among them, specifically as Figure 5 and Figure 9 shown, the clamping airbag 4 includes a horizontal section and L-shaped limiting sections arranged at both ends of the horizontal section; more specifically, the L-shaped limiting section includes a limiting section one 21 and a limiting section two 22, and a folding section 6 is arranged at the connection between the limiting section one 21 and the limiting section two 22, and the folding section 6 can be unfolded when inflated.

[0047] In the prior art, curved screen electronic devices that can display pictures on both the front and side of the electronic device have become the field of competition among major manufacturers. For a mobile phone curved screen, that is, the four side edges of the mobile phone screen have a certain arc transition, which will cause the side edges of the curved screen to be not easy to fix.

[0048] In this solution, by arranging a folding section 6 at the connection between the limiting section one 21 and the limiting section two 22, the folding section 6 can be unfolded when inflated. Therefore, when fixing a curved screen, a part of the folding section can well fit the two arc-shaped side edges of the curved screen, thereby increasing the stability of the fixation of the mobile phone screen; and, it should be noted that since the present invention uses an airbag method for fixation, when fixing, the gas presses against the surface of the airbag to fit the mobile phone screen, and at the same time the folding section has a certain ductility. Therefore, when fixing a normal mobile phone screen, it can also fit the side edge of the mobile phone screen.

[0049] Among them, it should be noted that due to different requirements, the specifications of mobile phone screens are different. Some mobile phone screens are thicker. If the normal air intake is still used to supply air to the clamping airbag, it will cause the pressure in the airbag to increase. If the pressure in the airbag is too high, it is easy to cause damage to the mobile phone screen or leakage and damage of the clamping airbag.

[0050] Therefore, in this embodiment, the limit fixation component further includes a pressure relief mechanism, and the pressure relief mechanism is used to relieve pressure when the air pressure in the clamping airbag 4 is too high.

[0051] Specifically, the pressure relief mechanism includes an air outlet pipe 17, a valve seat 3, a piston 18, and a second spring 9. An activity chamber 8 is provided inside the valve seat 3. The piston 18 is movably installed inside the activity chamber 8. One end of the air outlet pipe 17 is connected to the clamping airbag 4, and the other end is communicated with the activity chamber 8. One end of the second spring 9 is connected to the end of the piston 18 away from the air outlet pipe 17, and the other end is connected to the bottom of the activity chamber 8. A vertical pressure relief hole 7 is provided on the valve seat 3, and the pressure relief hole 7 is communicated with the activity chamber 8. When the air pressure in the clamping airbag 4 is too high, the gas in the clamping airbag 4 squeezes the piston 18 to move the piston 18 inside the activity chamber 8, and then the gas flows out from the pressure relief hole 7.

[0052] In the above solution, when specifically designing the second spring, according to the elastic force calculation formula of the spring F = kx, where: k is the elastic coefficient and x is the deformation amount, it is only necessary to make the distance from the leftmost end of the activity chamber to the pressure relief hole (the deformation amount of the spring) multiplied by the elastic coefficient K of the spring equal to or slightly less than the set maximum pressure.

[0053] Wherein, in order to improve the sealing performance between the piston and the activity chamber and prevent gas from leaking out from the gap between the piston and the activity chamber, an annular installation groove is provided on the circumferential surface of the piston 18, and an annular sealing ring 19 is installed in the annular installation groove. The annular sealing ring can effectively improve the sealing performance between the piston and the activity chamber.

[0054] Wherein, a ventilation pipe 13 is further provided inside the valve seat 3. An air inlet pipe 16 is provided on the clamping airbag 4. One end of the air inlet pipe 16 away from the clamping airbag 4 is communicated with the ventilation pipe 13. A control valve 14 is provided on the ventilation pipe 13. Specifically, an external air source is communicated with one end of the ventilation pipe, and the gas enters the air inlet pipe through the ventilation pipe and finally flows into the clamping airbag.

[0055] In this embodiment, the pressure relief mechanism further includes a transmission assembly. When the piston 18 moves, it drives the transmission assembly to operate, and then drives the control valve 14 to control the on-off of the air inlet pipe 16.

[0056] Furthermore, the transmission assembly includes a transmission rack 20 and a transmission gear 11. An installation chamber 10 is provided inside the valve seat 3. The installation chamber 10 is communicated with the activity chamber 8. The transmission rack 20 is horizontally arranged at one end of the piston 18, and the transmission gear 11 is rotatably arranged inside the installation chamber 10. The transmission gear 11 is in transmission connection with the control rod of the control valve 14.

[0057] Specifically, the specific transmission structure between the transmission gear and the control rod is: a first synchronous wheel 12 is coaxially arranged on the transmission gear 11, and a second synchronous wheel 15 is coaxially arranged on the control rod of the control valve 14. The first synchronous wheel 12 and the second synchronous wheel 15 are connected by a synchronous belt 24.

[0058] Among them, since the gas in the airbag has a certain pressure, during the process of supplying gas to the clamping airbag, the piston will also move to the right. In order to prevent the transmission component from driving the control rod to rotate during this process, resulting in the gas supply terminal, therefore, in this solution, the piston needs to move a certain distance to the right (this distance can be specifically obtained through experiments and calculations) before the transmission gear meshes with the transmission rack.

[0059] It should be noted that in the above solution, since the resistance brought by the transmission component is relatively small, the influence on the movement of the piston can be ignored.

[0060] Among them, when the air pressure in the clamping airbag is too high, the pressure relief mechanism is opened, and the gas flows out from the pressure relief hole. If the clamping airbag is continuously inflated at this time, it will cause the continuous opening of the pressure relief mechanism, resulting in waste of gas. At the same time, it is also easy to cause the clamping airbag to be continuously under high air pressure, affecting its service life. Through the above solution, when the pressure relief mechanism starts, the piston moves to the right, the transmission rack meshes with the transmission gear, the transmission gear rotates, the synchronous pulley 1 coaxially arranged with the transmission gear drives the synchronous pulley 2 to rotate, and then drives the control rod to rotate. The rotation of the control rod controls the closing of the control valve, thereby interrupting the gas supply to the clamping airbag.

[0061] In the above solution, when the pressure relief valve is opened, the piston drives the control rod to rotate to close the control valve, thereby interrupting the gas supply to the clamping airbag. While relieving the pressure, the gas supply can be closed, which can prevent the continuous opening of the pressure relief mechanism, avoid waste of gas, and at the same time prevent the clamping airbag from being continuously under high air pressure, affecting its service life.

[0062] Among them, the specific structure of the control valve belongs to the prior art. The rotation of the control rod can control the gas flow rate passing through the control valve. Therefore, its specific structure will not be described in detail.

[0063] The above is only an illustration of the best embodiment of the present invention, but it should not be construed as a limitation of the claims. The present invention is not limited to the above embodiments, and its specific structure allows changes. All changes made within the protection scope of the independent claims of the present invention are within the protection scope of the present invention.

Claims

1. A mobile phone screen detection device, including a frame (25), and a workbench surface (29) is arranged on the upper end surface of the frame (25); It is characterized in that: A rotatable rotating frame (26) is arranged on the frame (25), and a scribing component is arranged on the rotating frame (26); The scribing component includes an electric push rod (30) and several scribing pens. The scribing pens are installed at the lower end of the electric push rod (30). The scribing pen includes a pen rod (35), a first magnet (36), a second magnet (37) and a fixing part (34). An axial moving hole (38) is arranged inside the fixing part (34). One end of the pen rod (35) extends into the moving hole (38). The first magnet (36) is installed at one end of the pen rod (35) located inside the moving hole (38). The second magnet (37) is installed at the bottom of the moving hole (38). The first magnet (36) and the second magnet (37) are arranged with the same poles repelling each other; Several mobile phone screen fixing components are arranged on the workbench surface (29). When the rotating frame (26) rotates, it drives the scribing pen to perform a scribing test on the mobile phone screen (23); The mobile phone screen fixing component includes a bottom plate (2) and a limit fixing component installed on the bottom plate (2); The limit fixing component includes a clamping air bag (4) and two L-shaped plates (1). The two L-shaped plates (1) are symmetrically installed on both sides of the upper end surface of the bottom plate (2). The two L-shaped plates (1) and the bottom plate (2) form a convex-shaped fixing cavity. The clamping air bag (4) is adapted to the shape of the fixing cavity. The clamping air bag (4) is communicated with an external air source; The limit fixing component further includes a pressure relief mechanism, and the pressure relief mechanism is used for relieving pressure when the air pressure in the clamping air bag (4) is too high; The pressure relief mechanism includes an air outlet pipe (17), a valve seat (3), a piston (18) and a second spring (9). An activity cavity (8) is arranged inside the valve seat (3). The piston (18) is movably installed in the activity cavity (8). One end of the air outlet pipe (17) is connected to the clamping air bag (4), and the other end is communicated with the activity cavity (8). One end of the second spring (9) is connected to the end of the piston (18) away from the air outlet pipe (17), and the other end is connected to the bottom of the activity cavity (8). A vertical pressure relief hole (7) is arranged on the valve seat (3), and the pressure relief hole (7) is communicated with the activity cavity (8). When the air pressure in the clamping air bag (4) is too high, the gas in the clamping air bag (4) squeezes the piston (18) to make the piston (18) move in the activity cavity (8), and then the gas flows out from the pressure relief hole (7); A ventilation pipe (13) is further arranged inside the valve seat (3). An air inlet pipe (16) is arranged on the clamping air bag (4). The end of the air inlet pipe (16) away from the clamping air bag (4) is communicated with the ventilation pipe (13). A control valve (14) is arranged on the ventilation pipe (13); The pressure relief mechanism further includes a transmission component. When the piston (18) moves, it drives the transmission component to operate, and then drives the control valve (14) to control the on-off of the air inlet pipe (16); The transmission assembly includes a transmission rack (20) and a transmission gear (11). An installation cavity (10) is provided in the valve seat (3), and the installation cavity (10) communicates with the movable cavity (8). The transmission rack (20) is horizontally arranged at one end of the piston (18), and the transmission gear (11) is rotatably arranged in the installation cavity (10). The transmission gear (11) is in transmission connection with the control rod of the control valve (14).

2. The mobile phone screen detection device according to claim 1, characterized in that: An installation block (33) is provided at the lower end of the electric push rod (30). A receiving cavity (27) is provided in the installation block (33). One end of the fixing part (34) is hinged in the receiving cavity (27). Two first springs (39) are symmetrically arranged on both sides of the fixing part (34). One end of the first spring (39) away from the fixing part (34) is connected to the wall of the receiving cavity (27); the first spring (39) is used to provide a rebounding force when the fixing part (34) rotates.

3. The mobile phone screen detection device according to claim 2, characterized in that: Guide blocks (32) are arranged on both sides of the installation block (33). Guide holes are provided in the guide blocks (32), and guide rods (31) are arranged in the guide holes. The upper ends of the guide rods (31) are connected to the rotating frame (26).

4. The mobile phone screen detection device according to claim 1, characterized in that: The clamping airbag (4) includes a horizontal section and L-shaped limiting sections arranged at both ends of the horizontal section; the L-shaped limiting sections include a first limiting section (21) and a second limiting section (22). A wrinkled section (6) is arranged at the connection between the first limiting section (21) and the second limiting section (22), and the wrinkled section (6) can be unfolded when inflated.

5. The mobile phone screen detection device according to claim 1, characterized in that: A first synchronous wheel (12) is coaxially arranged on the transmission gear (11), a second synchronous wheel (15) is coaxially arranged on the control rod of the control valve (14), and the first synchronous wheel (12) and the second synchronous wheel (15) are connected by a synchronous belt (24).

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