Mobile phone screen clamping unit and mobile phone screen clamping and positioning device

Abstract

The invention relates to the technical field of mobile phone screen clamping and positioning, in particular to a mobile phone screen clamping unit and a mobile phone screen clamping and positioning device.The mobile phone screen clamping unit comprises an extension chamber and an extension assembly, the clamping assembly used for clamping a mobile phone screen is arranged on one side of the extension chamber, and an imaging sensor is arranged in the clamping assembly; an extension assembly used for extending the clamping assembly is arranged on the inner side of the extension rod, a connecting rod assembly used for supporting the whole extension assembly is arranged in the extension assembly, and a containing table used for containing a mobile phone screen is arranged on the side, away from the clamping assembly, of the extension chamber. The extension assembly and the connecting rod assembly are used for clamping mobile phone screens at different positions, and meanwhile the clamping assembly and the placing table are used for conveying and placing the mobile phone screens.

Description

Technical Field

[0001] The present invention relates to the technical field of mobile phone screen clamping and positioning, and in particular to a mobile phone screen clamping unit and a mobile phone screen clamping and positioning device. Background Art

[0002] Mobile phone screens are also called display screens, which are used to display images and colors. The screen size is calculated based on the screen diagonal, usually in inches, and refers to the length of the screen diagonal. The screen material is becoming more and more important as mobile phone color screens become more and more popular. During the production and processing of mobile phone screens, mobile phone screen clamping devices are needed to clamp, position and install the mobile phone screens. The Chinese announcement number is: CN213946350U, which discloses a mobile phone screen clamping unit and a mobile phone screen clamping and positioning device, including a base, a rotating shaft, a first gear and a laser midpoint, an operating table is fixed on the base, and an electric telescopic rod is fixed on the operating table, and the end of the electric telescopic rod is interconnected with the movable frame, and the movable frame is set on the guide rail, the first gear is fixed to the lower end of the rotating shaft, and the first gear is interconnected with the convex gear rod, and the convex gear rod is fixed on the operating table, and the laser midpoint is set on the operating table. The mobile phone screen clamping unit and the mobile phone screen clamping and positioning device adopt an elastic clamping mechanism with adjustable clamping pressure to replace the traditional integrated clamping mechanism, and the clamping force can be adjusted according to the actual material requirements of the mobile phone screen to avoid damage to the screen due to excessive pressure during the clamping process, and a linked rotating mechanism is adopted to realize the steering of the clamping device, which is convenient for clamping screens at different angles; Although the above patent uses an elastic clamping mechanism to adjust the clamping force and a linked rotating mechanism to realize the steering of the clamping device to facilitate the clamping of screens at different angles, it does not take into account that in the process of positioning and conveying the curved screen of the mobile phone screen, the edge of the curved screen is prone to collision, and when the curved screen is positioned, the clamping positions on both sides are the curved surface positions of the screen. If the clamping force is not well controlled, the curved surface position is easily deformed or even cracked and damaged; In view of this, we propose a mobile phone screen clamping unit and a mobile phone screen clamping and positioning device. Summary of the invention

[0003] The purpose of the present invention is to provide a mobile phone screen clamping unit and a mobile phone screen clamping and positioning device to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides a mobile phone screen clamping unit and a mobile phone screen clamping and positioning device, comprising an extension chamber and an extension component, a clamping component for clamping a mobile phone screen is arranged on one side of the extension chamber, an imaging sensor is arranged in the clamping component, an extension component for extending the clamping component is arranged on the inner side of the extension chamber, a connecting rod component for supporting the entire extension component is arranged in the extension component, a placement table for placing the mobile phone screen is arranged on the side of the extension chamber away from the clamping component, and a turntable is fixedly connected to the bottom of the placement table, wherein: Through the sensing of the imaging sensor, the extension assembly and the connecting rod assembly are used to clamp the mobile phone screens at different positions, and the clamping assembly and the placement table are used to transport and place the mobile phone screens.

[0005] As a preferred embodiment of the present invention, the bottom of the extension chamber is fixedly connected to a fixed base, the top of the fixed base is fixedly connected to a guard plate, the bottom of the fixed base is fixedly connected to a rotating base, the bottom of the rotating base is provided with a supporting base, and the rotating base is rotatably connected to the top of the supporting base, wherein: An extension plate is fixedly connected to one side of the rotating base, and a clamping assembly is arranged on the top of the extension plate.

[0006] As a preferred embodiment of the present invention, the clamping assembly includes an upper clamping chamber and a lower clamping chamber, the lower clamping chamber is slidably connected to the top of the extension plate, the upper clamping chamber is fixedly connected to an imaging sensor on the side away from the extension chamber, the upper clamping chamber is slidably connected to limiting plates on both sides, the limiting plates on both sides are fixedly connected to a lifting piece on the inner side of an end away from the upper clamping chamber, and the upper clamping roller is rotatably connected to the inner side of the upper clamping chamber.

[0007] As a preferred embodiment of the present invention, a lower clamping roller is rotatably connected to the inner side of the lower clamping chamber, a slide rail is provided on the top of the lower clamping chamber, and the bottom of the upper clamping chamber is slidably connected to the top of the lower clamping chamber.

[0008] As a preferred embodiment of the present invention, the extension component includes a motor, the motor is fixedly connected to the outer wall of the extension chamber, the output end of the motor is fixedly connected to a turntable, the turntable is fixedly connected to a protrusion block on the side away from the motor, the inner wall of the extension chamber is rotatably connected to a swing rod, and a sliding rod is arranged below the swing rod.

[0009] As a preferred embodiment of the present invention, the swing lever as a whole is composed of a rod-shaped upper section and a fan-shaped lower section. The rod-shaped outer wall of the upper section of the swing lever is provided with a strip hole, the width of the strip hole matches the diameter of the protruding block, and the bottom outer wall of the fan-shaped lower section of the swing lever is fixedly connected to a No. 1 rack.

[0010] As a preferred embodiment of the present invention, a No. 2 rack is fixedly connected to the top of the sliding rod, the No. 1 rack is meshingly connected to the No. 2 rack, one end of the sliding rod is fixedly connected to a spring, the spring is fixedly connected to one side of the placement table at the end away from the sliding rod, the sliding rods on both sides are slidably connected to the inner sides of the guard plates on both sides, a limiting platform is fixedly connected between the sliding rods on both sides, a conveying roller is provided on one side of the limiting platform, and both ends of the conveying roller are rotatably connected to the inner sides of the sliding rods on both sides.

[0011] As a preferred embodiment of the present invention, a connecting rod assembly is arranged on the top of the No. 2 rack, and the connecting rod assembly includes a No. 1 connecting rod, a No. 2 connecting rod, a No. 3 connecting rod and a No. 4 connecting rod. One side of the lower end of the No. 1 connecting rod is fixedly connected to a No. 1 gear, and the No. 1 connecting rod, the No. 2 connecting rod, the No. 3 connecting rod and the No. 4 connecting rod are rotatably connected to each other to form a quadrilateral.

[0012] As a preferred embodiment of the present invention, one side of the No. 3 connecting rod is rotatably connected to the No. 2 gear, the middle end of the No. 3 connecting rod is rotatably connected to the No. 5 connecting rod, the No. 1 connecting rod, the No. 2 connecting rod, the No. 3 connecting rod and the No. 4 connecting rod are connected to form a quadrilateral, and the other end of the No. 5 connecting rod is mirrored to form another quadrilateral formed by the No. 1 connecting rod, the No. 2 connecting rod, the No. 3 connecting rod and the No. 4 connecting rod, and the two ends of the No. 5 connecting rod are rotatably connected to the middle ends of the No. 3 connecting rods on both sides.

[0013] As a preferred embodiment of the present invention, the No. 5 connecting rod is fixedly connected with a triangular connecting piece on the outer wall of the No. 1 connecting rod on the side away from the turntable, and the triangular connecting piece is fixedly connected to the outer wall of the upper clamping chamber.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In the mobile phone screen clamping unit and the mobile phone screen clamping and positioning device, the turntable is driven by the motor to rotate and at the same time drive the swing rod to drive the sliding rod to slide left and right, and the sliding rod drives the extension and contraction of the connecting rod assembly, and the upper and lower clamping rollers and the conveying rollers in the clamping assembly are used to convey the mobile phone screen to the placement table, and the placement table is tilted to convey the mobile phone screen to the next process. In this way, the curved screen can be placed. If the clamping force is not well controlled when clamping on both sides, it is easy to cause deformation of the curved position or even cracking and damage of the screen.

[0015] 2. In the mobile phone screen clamping unit and the mobile phone screen clamping and positioning device, when the swing rod drives the sliding rod to slide to the left, the spring will push the placement table to rotate counterclockwise. At this time, if there is a mobile phone screen placed on the placement table, it will be tilted in the counterclockwise direction. When the sliding rod slides to the right again, the spring will drive the placement table to rotate and tilt clockwise. At this time, the mobile phone screen transported here by the conveying roller will be transported to the placement table on the inner inclined surface of the placement table, and will be rotated counterclockwise by the placement table again to transport the mobile phone screen to the next process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an overall three-dimensional schematic diagram of a mobile phone screen clamping unit and a mobile phone screen clamping and positioning device of the present invention; Figure 2 It is an overall cross-sectional schematic diagram of a mobile phone screen clamping unit and a mobile phone screen clamping and positioning device of the present invention; Figure 3 It is a three-dimensional schematic diagram of the clamping components of the mobile phone screen clamping unit and the mobile phone screen clamping and positioning device of the present invention; Figure 4 It is a three-dimensional schematic diagram of the extension components of the mobile phone screen clamping unit and the mobile phone screen clamping and positioning device of the present invention; Figure 5 A detailed schematic diagram of the extended components of the mobile phone screen clamping unit and the mobile phone screen clamping and positioning device of the present invention; Figure 6 It is an enlarged schematic diagram of part A of the mobile phone screen clamping unit and the mobile phone screen clamping and positioning device of the present invention; Figure 7 It is a schematic diagram of the unfolding of the clamping components of the mobile phone screen clamping unit and the mobile phone screen clamping and positioning device of the present invention; Figure 8 It is a three-dimensional schematic diagram of a placement platform of a mobile phone screen clamping unit and a mobile phone screen clamping and positioning device of the present invention.

[0017] The meaning of each number in the figure is: 1. Extension chamber; 11. Support base; 111. Rotating base; 112. Fixed base; 1121. Guard plate; 12. Extension plate; 2. Clamping assembly; 21. Upper clamping chamber; 211. Imaging sensor; 212. Limiting plate; 2121. Lifting member; 213. Upper clamping roller; 22. Lower clamping chamber; 221. Lower clamping roller; 222. Slide rail; 3. Extension assembly; 31. Motor; 311. Turntable; 3111. Raised block; 312. Swing rod; 3121. Bar hole; 3122. Rack No. 1; 32. Sliding rod; 321. Rack No. 2; 322. Spring; 323. Limiting table; 324. Conveying roller; 33. Connecting rod assembly; 331. Connecting rod No. 1; 3311. Gear No. 1; 332. Connecting rod No. 2; 333. Connecting rod No. 3; 334. Connecting rod No. 4; 335. Gear No. 2; 34. Connecting rod No. 5; 35. Triangular connector; 4. Placing table; 41. Turntable. DETAILED DESCRIPTION

[0018] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0020] Embodiment 1 See also Figure 1-8 As shown, this embodiment provides a mobile phone screen clamping unit and a mobile phone screen clamping and positioning device, including an extension chamber 1 and an extension component 3, a clamping component 2 for clamping a mobile phone screen is arranged on one side of the extension chamber 1, an imaging sensor 211 is arranged in the clamping component 2, an extension component 3 for extending the clamping component 2 is arranged on the inner side of the extension chamber 1, a connecting rod component 33 for supporting the entire extension component 3 is arranged in the extension component 3, a placing table 4 for placing the mobile phone screen is arranged on the side of the extension chamber 1 away from the clamping component 2, and a turntable 41 is fixedly connected to the bottom of the placing table 4, wherein: the imaging sensor 211 senses The extension assembly 3 and the connecting rod assembly 33 are used to clamp the mobile phone screens at different positions, and the clamping assembly 2 and the placement table 4 are used to complete the transportation and placement of the mobile phone screen. The bottom of the extension chamber 1 is fixedly connected with a fixed base 112, and the top of the fixed base 112 is fixedly connected with a protective plate 1121. The bottom of the fixed base 112 is fixedly connected with a rotating base 111, and the bottom of the rotating base 111 is provided with a supporting base 11, and the rotating base 111 is rotatably connected to the top of the supporting base 11, wherein: one side of the rotating base 111 is fixedly connected with an extension plate 12, and the top of the extension plate 12 is provided with a clamping assembly 2.

[0021] like Figure 7As shown, the clamping assembly 2 includes an upper clamping chamber 21 and a lower clamping chamber 22, the lower clamping chamber 22 is slidably connected to the top of the extension plate 12, the upper clamping chamber 21 is fixedly connected to an imaging sensor 211 on the side away from the extension chamber 1, the upper clamping chamber 21 is slidably connected to limit plates 212 on both sides, and the limit plates 212 on both sides are fixedly connected to a lifting piece 2121 on the inner side of an end away from the upper clamping chamber 21, the upper clamping chamber 21 is rotatably connected to an upper clamping roller 213 on the inner side, and the lower clamping chamber 22 is rotatably connected to a lower clamping roller 221 on the inner side, a slide rail 222 is provided on the top of the lower clamping chamber 22, and the bottom of the upper clamping chamber 21 is slidably connected to the top of the lower clamping chamber 22.

[0022] like Figure 4-Figure 6 As shown, the extension component 3 includes a motor 31, the motor 31 is fixedly connected to the outer wall of the extension chamber 1, the output end of the motor 31 is fixedly connected to a turntable 311, the turntable 311 is fixedly connected to a protrusion 3111 on the side away from the motor 31, the inner wall of the extension chamber 1 is rotatably connected to a swing rod 312, a sliding rod 32 is arranged below the swing rod 312, the swing rod 312 as a whole is composed of a rod-shaped upper section and a fan-shaped lower section, a strip hole 3121 is opened on the rod-shaped outer wall of the upper section of the swing rod 312, the width of the strip hole 3121 matches the diameter of the protrusion 3111, and a rack No. 1 3122 is fixedly connected to the outer wall of the bottom of the fan-shaped lower section of the swing rod 312.

[0023] like Figure 3-Figure 4 As shown, a No. 2 rack 321 is fixedly connected to the top of the sliding rod 32, and the No. 1 rack 3122 is meshed with the No. 2 rack 321. A spring 322 is fixedly connected to one end of the sliding rod 32. The spring 322 is fixedly connected to one side of the placement table 4 at the end away from the sliding rod 32. The sliding rods 32 on both sides are slidably connected to the inner sides of the guard plates 1121 on both sides. A limiting platform 323 is fixedly connected between the sliding rods 32 on both sides. A conveying roller 324 is arranged on one side of the limiting platform 323. Both ends of the conveying roller 324 are rotatably connected to the inner sides of the sliding rods 32 on both sides. A connecting rod assembly 33 is arranged on the top of the No. 2 rack 321.

[0024] like Figure 4-Figure 5As shown, the connecting rod assembly 33 includes a No. 1 connecting rod 331, a No. 2 connecting rod 332, a No. 3 connecting rod 333 and a No. 4 connecting rod 334. One side of the lower end of the No. 1 connecting rod 331 is fixedly connected to a No. 1 gear 3311. The No. 1 connecting rod 331, the No. 2 connecting rod 332, the No. 3 connecting rod 333 and the No. 4 connecting rod 334 are rotatably connected to each other to form a quadrilateral. One side of the No. 3 connecting rod 333 is rotatably connected to the No. 2 gear 335. The middle end of the No. 3 connecting rod 333 is rotatably connected to the No. 5 connecting rod 34 The quadrilateral formed by the interconnection of connecting rod No. 1 331, connecting rod No. 2 332, connecting rod No. 3 33 and connecting rod No. 4 334 is mirrored at the other end of connecting rod No. 5 34. Another quadrilateral formed by the interconnection of connecting rod No. 1 331, connecting rod No. 2 332, connecting rod No. 3 33 and connecting rod No. 4 334 is distributed. The two ends of connecting rod No. 5 34 are rotatably connected to the middle ends of connecting rod No. 3 33 on both sides. A triangular connecting piece 35 is fixedly installed on the outer side of connecting rod No. 2 332 away from the turntable 311.

[0025] It can be seen from this that when it is necessary to clamp the mobile phone screens scattered on the desktop, Figure 1-Figure 3 As shown, the staff starts working by fixing the top of the extension plate 12 to the bottom of the table with bolts. Under the rotation of the rotating base 111 and the action of the imaging sensor 211, the imaging sensor 211 transmits data to the control room when detecting the mobile phone screen on the desktop. At this time, the rotating base 111 rotates to drive the entire extension component 3 and the clamping component 2 to rotate to the position in the direction of the mobile phone screen. At this time, the turntable 311 rotates under the drive of the motor 31, and the turntable 311 drives the protruding block 3111 to slide in the bar hole 3121, and drives the swing rod 312 to swing left and right. At this time, the No. 1 rack 3122 at the bottom of the swing rod 312 drives the No. 2 rack 321 and the sliding rod 32 to slide left and right; like Figure 5As shown, when the sliding rod 32 slides to the left, the second rack 321 will drive the first gear 3311 to rotate clockwise, and the first connecting rod 331 will rotate clockwise together. At this time, the second gears 335 on both sides are meshed and rotated, and the first connecting rods 331 on both sides are unfolded, and the triangular connecting piece 35 is used to push the clamping assembly 2 outward. At this time, the lower clamping chamber 22 will be against the edge of the table, and driven by the triangular connecting piece 35, the upper clamping chamber 21 will slide horizontally on the table, and the mobile phone screen will be wrapped inside by the limiting plate 212, and the mobile phone screen will be pulled back by the tilting piece 2121 when the sliding rod 32 slides to the right. At this time, the upper clamping chamber 21 is pulled back together The mobile phone screen is conveyed to the extension chamber 1 under the electric drive, and when passing the position between the bottom of the limit platform 323 and the fixed base 112, the mobile phone screen is conveyed to the placement table 4 by the conveying roller 324, and finally the mobile phone screen is conveyed to the next process. In this way, the curved screen can be placed. If the clamping force is not well controlled when clamping on both sides, it is easy to cause deformation of the curved surface position or even cracking and damage of the screen. The method of conveying with soft rollers can well avoid this situation.

[0026] It should be noted that if Figure 8 As shown, in the process of the swing rod 312 driving the sliding rod 32 to slide to the left, the spring 322 will push the placement table 4 to rotate counterclockwise. At this time, if there is a mobile phone screen placed on the placement table 4, it will be tilted in the counterclockwise direction. When the sliding rod 32 slides to the right again, the spring 322 will drive the placement table 4 to rotate and tilt clockwise. At this time, the mobile phone screen transported here by the conveying roller 324 will be transported to the placement table 4 on the inner inclined surface of the placement table 4, and will be rotated counterclockwise by the placement table 4 again to transport the mobile phone screen to the next process.

[0027] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A mobile phone screen clamping unit and a mobile phone screen clamping and positioning device, comprising an extension chamber (1) and an extension component (3), characterized in that: A clamping assembly (2) for clamping a mobile phone screen is arranged on one side of the extension chamber (1), an imaging sensor (211) is arranged in the clamping assembly (2), an extension assembly (3) for extending the clamping assembly (2) is arranged on the inner side of the extension chamber (1), a connecting rod assembly (33) for supporting the entire extension assembly (3) is arranged in the extension assembly (3), and a placement table (4) for placing a mobile phone screen is arranged on a side of the extension chamber (1) away from the clamping assembly (2), and a turntable (41) is fixedly connected to the bottom of the placement table (4), wherein: The imaging sensor (211) senses and the extension assembly (3) and the connecting rod assembly (33) are used to clamp the mobile phone screens at different positions, while the clamping assembly (2) and the placement table (4) are used to transport and place the mobile phone screens.

2. A mobile phone screen clamping unit and a mobile phone screen clamping and positioning device according to claim 1, characterized in that: The bottom of the extension chamber (1) is fixedly connected to a fixed base (112), the top of the fixed base (112) is fixedly connected to a guard plate (1121), the bottom of the fixed base (112) is fixedly connected to a rotating base (111), the bottom of the rotating base (111) is provided with a supporting base (11), and the rotating base (111) is rotatably connected to the top of the supporting base (11), wherein: An extension plate (12) is fixedly connected to one side of the rotating base (111), and a clamping assembly (2) is provided on the top of the extension plate (12).

3. The mobile phone screen clamping unit and the mobile phone screen clamping and positioning device according to claim 2, characterized in that: The clamping assembly (2) comprises an upper clamping chamber (21) and a lower clamping chamber (22), wherein the lower clamping chamber (22) is slidably connected to the top of the extension plate (12), and the upper clamping chamber (21) is fixedly connected to an imaging sensor (211) on a side away from the extension chamber (1), and the upper clamping chamber (21) is slidably connected to limit plates (212) on both sides, and the limit plates (212) on both sides are fixedly connected to a lifting member (2121) on the inner side of an end away from the upper clamping chamber (21), and the inner side of the upper clamping chamber (21) is rotatably connected to an upper clamping roller (213).

4. The mobile phone screen clamping unit and the mobile phone screen clamping and positioning device according to claim 3, characterized in that: The inner side of the lower clamping chamber (22) is rotatably connected to a lower clamping roller (221), the top of the lower clamping chamber (22) is provided with a slide rail (222), and the bottom of the upper clamping chamber (21) is slidably connected to the top of the lower clamping chamber (22).

5. The mobile phone screen clamping unit and the mobile phone screen clamping and positioning device according to claim 4, characterized in that: The extension assembly (3) comprises a motor (31), the motor (31) being fixedly connected to the outer wall of the extension chamber (1), the output end of the motor (31) being fixedly connected to a rotating disk (311), the rotating disk (311) being fixedly connected to a protruding block (3111) on a side away from the motor (31), the inner wall of the extension chamber (1) being rotatably connected to a swing rod (312), and a sliding rod (32) being arranged below the swing rod (312).

6. The mobile phone screen clamping unit and the mobile phone screen clamping and positioning device according to claim 5, characterized in that: The swing lever (312) is composed of a rod-shaped upper section and a fan-shaped lower section. The rod-shaped outer wall of the upper section of the swing lever (312) is provided with a strip hole (3121), the width of the strip hole (3121) matches the diameter of the protruding block (3111), and the fan-shaped bottom outer wall of the lower section of the swing lever (312) is fixedly connected to a No. 1 rack (3122).

7. The mobile phone screen clamping unit and the mobile phone screen clamping and positioning device according to claim 6, characterized in that: A second rack (321) is fixedly connected to the top of the sliding rod (32), the first rack (3122) is meshedly connected to the second rack (321), one end of the sliding rod (32) is fixedly connected to a spring (322), the spring (322) is fixedly connected to one side of the placement table (4) at the end away from the sliding rod (32), the sliding rods (32) on both sides are slidably connected to the inner sides of the guard plates (1121) on both sides, and a limiting platform (323) is fixedly connected between the sliding rods (32) on both sides, and a conveying roller (324) is provided on one side of the limiting platform (323), and the two ends of the conveying roller (324) are rotatably connected to the inner sides of the sliding rods (32) on both sides.

8. The mobile phone screen clamping unit and the mobile phone screen clamping and positioning device according to claim 7, characterized in that: A connecting rod assembly (33) is arranged on the top of the No. 2 rack (321), and the connecting rod assembly (33) includes a No. 1 connecting rod (331), a No. 2 connecting rod (332), a No. 3 connecting rod (333) and a No. 4 connecting rod (334). A No. 1 gear (3311) is fixedly connected to one side of the lower end of the No. 1 connecting rod (331), and the No. 1 connecting rod (331), the No. 2 connecting rod (332), the No. 3 connecting rod (333) and the No. 4 connecting rod (334) are rotatably connected to each other to form a quadrilateral.

9. The mobile phone screen clamping unit and the mobile phone screen clamping and positioning device according to claim 8, characterized in that: One side of the No. 3 connecting rod (333) is rotatably connected to the No. 2 gear (335), the middle end of the No. 3 connecting rod (333) is rotatably connected to the No. 5 connecting rod (34), the No. 1 connecting rod (331), the No. 2 connecting rod (332), the No. 3 connecting rod (333) and the No. 4 connecting rod (334) are connected to form a quadrilateral, and the other end of the No. 5 connecting rod (34) is mirrored to form another quadrilateral formed by the No. 1 connecting rod (331), the No. 2 connecting rod (332), the No. 3 connecting rod (333) and the No. 4 connecting rod (334), and the two ends of the No. 5 connecting rod (34) are rotatably connected to the middle ends of the No. 3 connecting rods (333) on both sides.

10. The mobile phone screen clamping unit and the mobile phone screen clamping and positioning device according to claim 9, characterized in that: The fifth connecting rod (34) is fixedly connected to a triangular connecting piece (35) on the outer wall of the first connecting rod (331) at a side away from the rotating disk (311), and the triangular connecting piece (35) is fixedly connected to the outer wall of the upper clamping chamber (21).

Images