Positioning device for pressing screen of electronic product

Abstract

The present invention relates to the field of module screen bonding technology, and specifically to a positioning device for pressing the screen of an electronic product, comprising a mounting base, a movable rectangular frame being arranged above the mounting base, and a plurality of rotating folding arms with a reset function being passed between the movable rectangular frame and the mounting base, a first mounting plate being fixedly connected to the upper end of the mounting base, a second mounting plate with a reset function being rotatably connected inside the movable rectangular frame, a limiting mechanism capable of fixing the position of a touch screen and a display layer being fixedly connected inside the second mounting plate and the first mounting plate, a unloading mechanism capable of unloading the touch screen and the display layer being fixedly installed between the mounting base and the movable rectangular frame, and when the touch screen and the display layer are placed on the upper ends of the corresponding abutting round blocks and abutting strips, abutment between the touch screen and the display layer and the bottom ends of the inner walls of the first mounting plate and the second mounting plate can be avoided.

Description

Technical Field

[0001] The invention relates to the technical field of module screen lamination, and in particular to a positioning device for laminating electronic product screens. Background Art

[0002] Driven by the rapid development of smart devices, the production process of electronic product module screens has higher and higher requirements for precision and efficiency. In particular, in the bonding process of module screens, traditional positioning jigs have certain limitations. When bonding the touch screen and the display layer, they still rely on manual experience and simple tools for precise alignment. This not only greatly increases the operation time, but also puts forward high requirements on the technical level of the operators. Any carelessness will lead to quality problems such as display abnormality and insensitive touch.

[0003] In addition, the traditional bonding process often uses a flat-plate extrusion method, which makes it difficult to ensure uniform pressure distribution and easily generates bubbles and detachment during the bonding process, further affecting the quality and yield of the product. Moreover, traditional fixtures often need to be frequently adjusted or even redesigned when faced with touch screens and display layers of different sizes and shapes, which increases the complexity and cost of production, prolongs the production cycle, and makes it difficult to meet the market demand for rapid response and efficient production.

[0004] Chinese patent (publication number CN117738992A), this patented technology discloses a screen rework lamination jig and method, the screen rework lamination jig is used for a multi-screen, the multi-screen includes a cover plate, multiple display modules and an adhesive layer; the multi-screen includes at least one reworked screen; the screen rework lamination jig includes: a base, at least one rework positioning part and a clamping part; a plurality of base positioning grooves are provided on the base, each base positioning groove corresponds to each display module; the rework positioning part can be movably placed in the base positioning groove, and the rework positioning part corresponds to the position of the reworked screen in the multi-screen; the rework positioning part is used to sequentially accommodate the adhesive layer and the reworked display module; the clamping part is installed on the base, and the clamping part can be adjustably inserted into each base positioning groove. This application can perform rework lamination on the reworked screen without reworking all screens, thereby improving the efficiency of screen rework lamination and reducing the cost of screen rework lamination.

[0005] In the above-mentioned module screen production process, the bonding process of the touch screen and the display layer faces many challenges. Under the traditional operation mode, when bonding the two, the alignment operation can only be completed manually, and they can only be placed group by group. This manual alignment method is inefficient and the process is extremely cumbersome. It is heavily dependent on the operator's proficiency and patience. At the same time, manual operation is difficult to ensure accuracy. In the bonding process, the phenomenon of inadequate bonding often occurs, such as misalignment, excessive gap or uneven bonding surface. This directly leads to uneven quality of module screens, difficulty in improving yield rate, and increased production costs and resource waste. For this reason, we propose a positioning device for pressing electronic product screens. Summary of the invention

[0006] The purpose of the present invention is to provide a positioning device for pressing the screen of an electronic product to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a positioning device for pressing the screen of an electronic product, comprising a mounting base, a movable rectangular frame is arranged above the mounting base, and the movable rectangular frame is rotatably connected to the mounting base through a plurality of rotating folding arms with a reset function, a first mounting plate is fixedly connected to the upper end of the mounting base, a second mounting plate with a reset function is rotatably connected inside the movable rectangular frame, and a limiting mechanism capable of fixing and limiting the touch screen and the display layer is fixedly connected inside the second mounting plate and the first mounting plate;

[0008] A unloading mechanism is fixedly installed between the mounting base and the movable rectangular frame for unloading the touch screen and the display layer after bonding. An abutment round block is fixedly connected to the bottom end of the inner wall of the first mounting plate, and an abutment bar is fixedly connected to the inner wall end of the second mounting plate. When the touch screen and the display layer are placed on the upper ends of the corresponding abutment round blocks and abutment bars, the touch screen and the display layer are prevented from abutting against the bottom ends of the inner walls of the first mounting plate and the second mounting plate.

[0009] As a further feature of the present invention, each group of the limiting mechanisms comprises two groups of moving bars, each two groups of the moving bars are slidably connected to the corresponding inner wall of the second mounting plate, each two groups of corresponding moving bars have opposite ends fixedly connected to a first elastic telescopic arm, and each group of the first elastic telescopic arm has one end away from the moving bar that is rotatably connected to an abutment arm with a reset function, and the abutment arm can be quickly reset when driven.

[0010] As a further feature of the present invention, the outer wall of the abutment arm is rotatably connected to the folding air wheel, and the front and rear ends of the two movable bars are fixedly connected with mounting racks, and a connecting gear is arranged between the two groups of the mounting racks. Each group of the connecting gears is rotatably connected to the outer walls of the corresponding second mounting plate and the first mounting plate, and the mounting racks are meshed with the corresponding connecting gears. Each group of the movable bars is fixedly connected to the corresponding inner walls of the second mounting plate and the first mounting plate through a fourth folding air pipe, and the fourth folding air pipe can be folded multiple times.

[0011] As a further feature of the present invention, a second folding air pipe is fixedly connected between the movable rectangular frame and the mounting base, the second folding air pipe is fixedly connected to the fourth folding air pipe, and the second folding air pipe and the fourth folding air pipe can be folded multiple times.

[0012] As a further embodiment of the present invention, a connecting frame is fixedly connected to the upper end of the mounting base, a recovery wheel is fixedly connected to one end of the second mounting plate close to the connecting frame, and a connecting rope is wound around the outer wall of the recovery wheel, and the free end of the connecting rope is fixedly connected to the connecting frame via a second elastic telescopic arm.

[0013] As a further feature of the present invention, the unloading mechanism includes two groups of third folding air pipes, each group of the third folding air pipes is fixedly connected to the inner wall of the second mounting plate, and the output end of the third folding air pipe is fixedly connected to an abutting telescopic arm, and the abutting telescopic arm and the third folding air pipe are fixedly connected via a pipeline, and a first folding air pipe is also fixedly connected between the mounting base and the movable rectangular frame, and the first folding air pipe is fixedly connected to the third folding air pipe.

[0014] As a further embodiment of the present invention, a first connecting tube is fixedly connected to the upper end of the mounting base, and the first connecting tube is fixedly connected to the third folding air tube, a fourth connecting tube is fixedly connected to the outer wall of the first connecting tube, and a second abutment block is fixedly connected to the inside of the fourth connecting tube, a second connecting tube is fixedly connected to the upper end of the first folding air tube, and a third connecting tube is fixedly connected to the end of the second connecting tube away from the first mounting plate, and two groups of air vents are provided inside the third connecting tube.

[0015] As a further feature of the present invention, an abutment plate with a reset function is slidably connected to the inner wall of the third connecting tube, and a first abutment block is fixedly connected to one end of the abutment plate away from the second connecting tube, and the abutment plate abuts against the outer wall of the air vent.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. When the present invention is used, when the folding air wheel on the outer wall of the abutment arm abuts the abutment arm, the touch screen and the display layer, the abutment arm is at 90 degrees, so the touch screen and the display layer can be aligned and fixed, which reduces the skill requirements for operators, reduces human errors, improves production stability, and the automatic bonding function greatly improves production efficiency, reduces costs, and enhances corporate competitiveness. The high-precision automatic alignment also improves the display and touch performance of the module screen, improves product quality and yield rate, reduces after-sales risks, and helps companies establish a good image;

[0018] 2. When the present invention is used, a roller is used to squeeze the touch screen and the display layer, which can evenly disperse the pressure, effectively exhaust the air, and reduce the generation of bubbles. The rolling of the roller can continuously fine-tune the position, improve the fitting accuracy and flatness, ensure the quality and performance of the module screen fitting, and achieve high-quality production. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The figure is a front view of a positioning device for pressing the screen of an electronic product.

[0020] Figure 2 The figure is a rear view of a positioning device for pressing the screen of an electronic product.

[0021] Figure 3 The figure is a top view of a second mounting plate in a positioning device for pressing the screen of an electronic product.

[0022] Figure 4 The present invention is a schematic diagram of the position structure of a roller in a positioning device for pressing the screen of an electronic product.

[0023] Figure 5 The present invention is a schematic diagram of the position structure of a second elastic telescopic arm in a positioning device for pressing the screen of an electronic product.

[0024] Figure 6 The present invention is a schematic diagram of the internal structure of a third connecting tube in a positioning device for pressing a screen of an electronic product.

[0025] Figure 7 The present invention is a schematic diagram of the internal structure of a fourth connecting tube in a positioning device for pressing a screen of an electronic product.

[0026] In the figure: 1, mounting base; 2, moving rectangular frame; 3, rotating folding arm; 4, first mounting plate; 5, rubber suction cup; 6, first folding air pipe; 7, abutting round block; 8, second folding air pipe; 9, connecting frame; 10, abutting bar; 11, slide groove; 12, moving bar; 13, first elastic telescopic arm;

[0027] 14. Installing rack; 15. Connecting gear; 16. Abutting telescopic arm; 17. Roller; 18. Third folding air pipe; 19. Fourth folding air pipe; 20. Abutting arm; 21. Folding air wheel; 22. Roller; 23. Second elastic telescopic arm; 24. Connecting rope; 25. Recovering line wheel; 26. Second connecting pipe;

[0028] 27. First connecting tube; 28. Air vent; 29. ​​Third connecting tube; 30. First abutment block; 31. Connecting rod; 32. Second spring; 33. Abutment plate; 34. Second abutment block; 35. Fourth connecting tube; 37. Second mounting plate; 101. Limiting mechanism; 201. Discharging mechanism. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of 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.

[0030] Example 1: Please refer to Figure 1-2 In an embodiment of the present invention, a positioning device for pressing the screen of an electronic product includes a mounting base 1, a movable rectangular frame 2 is arranged above the mounting base 1, and the movable rectangular frame 2 is connected to the mounting base 1 through a plurality of rotating folding arms 3 with a reset function, and a reset torsion spring is connected to the rotating position of the rotating folding arms 3, and a weight reduction hole is opened inside each group of rotating folding arms 3, and a first mounting plate 4 is fixedly connected to the upper end of the mounting base 1, and a second mounting plate 37 with a reset function is rotatably connected inside the movable rectangular frame 2 through a rotating shaft, and a third reset torsion spring is fixedly connected between the second mounting plate 37 and the movable rectangular frame 2, and the second mounting plate 37 and the first mounting plate 4 are both fixedly connected to the touch A limiting mechanism 101 for fixing the position of the touch screen and the display layer, a discharge mechanism 201 for disassembling the connection between the touch screen and the display layer is provided between the mounting base 1 and the movable rectangular frame 2, a contact round block 7 is fixedly connected to the bottom end of the inner wall of the first mounting plate 4, and a contact strip 10 is fixedly connected to the inner wall end of the second mounting plate 37. When the touch screen and the display layer are placed on the upper ends of the corresponding contact round blocks 7 and the contact strip 10, the contact between the touch screen and the display layer and the bottom ends of the inner walls of the first mounting plate 4 and the second mounting plate 37 can be avoided. A plurality of rubber suction cups 5 are fixedly connected to the bottom of the mounting base 1, and the rubber suction cups 5 can be adsorbed on the outer wall of the object, and the mounting base 1 can be limited and fixed by the rubber suction cups 5;

[0031] Example 2: Please refer to Figure 2 to Figure 5Each set of limiting mechanisms 101 includes two moving bars 12, each set of moving bars 12 is slidably connected to the corresponding second mounting plate 37, and the two moving bars 12 are slidably connected to the left and right sides of the inner end of the second mounting plate 37, respectively. Specifically, two sets of sliding grooves 11 are provided inside the second mounting plate 37 and the first mounting plate 4, and the outer wall of each set of moving bars 12 is slidably connected to the inner wall of the corresponding sliding groove 11, and the inner wall of the sliding groove 11 and the outer wall of the moving bar 12 are coated with lubricating oil. When the moving bar 12 is slidably connected in the corresponding inner wall of the sliding groove 11, the sliding groove 11 can limit the moving bar 12 and also has a guiding function, thereby improving the stability of the moving bar 12 when moving, and the lubricating oil can also reduce the friction between the sliding groove 11 and the moving bar 12, thereby extending the service life of the slide groove 11 and the moving bar 12, each two groups of corresponding moving bars 12 have opposite ends fixedly connected with a first elastic telescopic arm 13, and each group of first elastic telescopic arms 13 have ends away from the moving bar 12 that are rotatably connected to an abutment arm 20 with a reset function through a rotating shaft, a second reset torsion spring is fixedly connected between the abutment arm 20 and the corresponding first elastic telescopic arm 13, and the abutment arm 20 is in a "V" shape, and the outer wall of the abutment arm 20 is rotatably connected with two rollers 22 and a folding air wheel 21, and the folding air wheel 21 is made of rubber material, the rubber material has good elasticity, and is also resistant to corrosion and high temperature, and the roller 22 can enhance the abutment area between the touch screen and the display layer.

[0032] The front and rear ends of the two moving bars 12 are fixedly connected with mounting racks 14, a connecting gear 15 is arranged between the two sets of mounting racks 14, and one end of the connecting gear 15 close to the second mounting plate 37 is slidably connected to the outer wall of the second mounting plate 37, each set of connecting gears 15 is rotatably connected to the corresponding second mounting plate 37 and the outer wall of the first mounting plate 4 through a rotating shaft, the mounting rack 14 and the corresponding connecting gear 15 are meshed with each other, each set of moving bars 12 and the corresponding second mounting plate 37 and the inner wall of the first mounting plate 4 are fixedly connected through the fourth folding air pipe 19, the second folding air pipe 8 is fixedly connected between the moving rectangular frame 2 and the mounting base 1, and the second folding air pipe 8 and the fourth folding air pipe 19 are also made of rubber material, and their functions are the same as those of the folding air wheel 21, which will not be described in detail here, and the second folding air pipe 8 and the fourth folding air pipe 19 are fixedly connected through a pipeline;

[0033] See also Figure 2 , Figure 5The upper end of the mounting base 1 is fixedly connected to a connecting frame 9, and one end of the second mounting plate 37 close to the connecting frame 9 is fixedly connected to a recovery wheel 25, and a connecting rope 24 is wound around the outer wall of the recovery wheel 25, and the free end of the connecting rope 24 is fixedly connected to the connecting frame 9 through the second elastic telescopic arm 23. When the second mounting plate 37 moves downward, due to the large elastic force of the second elastic telescopic arm 23, the recovery wheel 25 will be pulled by the connecting rope 24, and the recovery wheel 25 will drive the second mounting plate 37 to rotate 180 degrees. When the second mounting plate 37 continues to move downward, the second mounting plate 37 can be pulled so that the second mounting plate 37 can be further moved downward;

[0034] See also Figure 2 , Figure 5 , Figure 6 , Figure 7 The unloading mechanism 201 includes two groups of third folded air pipes 18, each group of third folded air pipes 18 is fixedly connected to the inner wall of the second mounting plate 37, and the output end of the third folded air pipe 18 is fixedly connected to the abutting telescopic arm 16, the abutting telescopic arm 16 and the third folded air pipe 18 are fixedly connected through a pipeline, and the abutting telescopic arm 16 and the inner wall of the third folded air pipe 18 are fixedly connected with a first spring. It is worth noting that the strength of the first spring inside the third folded air pipe 18 is higher than that of the first spring inside the abutting telescopic arm 16, so when the third folded air pipe 18 is abutted When the telescopic arm 16 is filled with gas, the telescopic arm 16 is extended first because the strength of the first spring inside the telescopic arm 16 is low. When the telescopic arm 16 reaches its limit, the third folded air tube 18 is extended and expanded. The upper end of the telescopic arm 16 is connected to two groups of rollers 17 by rotating shafts, and the two groups of rollers 17 are symmetrically distributed on the upper end of the telescopic arm 16. When the telescopic arm 16 is extended, the telescopic arm 16 can drive the two groups of rollers 17 to abut against the outer wall of the touch screen and the display layer, so that the air between the touch screen and the display layer can be squeezed out.

[0035] See also Figure 2 , Figure 4 , Figure 6 , Figure 7 A first folding air pipe 6 is also fixedly connected between the mounting base 1 and the movable rectangular frame 2, and the first folding air pipe 6 is fixedly connected to the third folding air pipe 18. A first connecting pipe 27 is also fixedly connected to the upper end of the mounting base 1, and the first connecting pipe 27 is fixedly connected to the third folding air pipe 18 through a pipeline. The outer wall of the first connecting pipe 27 is fixedly connected to a fourth connecting pipe 35, and the inside of the fourth connecting pipe 35 is fixedly connected to a second abutting block 34, and the outer wall of the second abutting block 34 is provided with a curved edge;

[0036] See also Figure 2 , Figure 6, the upper end of the first folded air pipe 6 is fixedly connected with the second connecting pipe 26, and the end of the second connecting pipe 26 away from the first mounting plate 4 is fixedly connected with the third connecting pipe 29, and two groups of air holes 28 are opened inside the third connecting pipe 29, and the two groups of air holes 28 are symmetrically distributed front and back inside the third connecting pipe 29, and the inner wall of the third connecting pipe 29 is slidably connected with an abutment plate 33 with a reset function, and the end of the abutment plate 33 away from the second connecting pipe 26 is fixedly connected with a first abutment block 30, and the outer wall of the first abutment block 30 is also provided with a curved surface, the first abutment block 30 is adapted to the second abutment block 34, and the abutment plate 33 abuts against the outer wall of the air hole 28, and the abutment plate 33 and the first abutment block 30 are fixedly connected by a connecting rod 31, and the first abutment block 30 and the inner wall of the second connecting pipe 26 are fixedly connected by a second spring 32, and the second spring 32 is sleeved on the outer wall of the connecting rod 31;

[0037] Specifically, when the first folded air tube 6 is squeezed, the gas on the inner wall of the first folded air tube 6 will be compressed. At this time, since the abutment plate 33 abuts against the air vent 28, the gas inside the first folded air tube 6 will not be discharged from the air vent 28. When the first abutment block 30 abuts against the second abutment block 34, the curved surface between the first abutment block 30 and the second abutment block 34 abuts, the curved surface can effectively reduce the friction between the two and extend the service life. When the abutment is pushed, the second abutment block 34 will drive the abutment plate 33 to move through the connecting rod 31. When the abutment plate 33 is separated from the abutment with the air vent 28, the gas inside the first folding air tube 6 will enter the fourth connecting tube 35 through the second connecting tube 26 and the third connecting tube 29, and then enter the first connecting tube 27 from the fourth connecting tube 35, so that the gas inside the first connecting tube 27 enters the third folding air tube 18, and the third folding air tube 18 and the abutting telescopic arm 16 will expand and extend.

[0038] The working principle of the present invention is:

[0039] When the present invention is used, it is only necessary to place the touch screen and the display layer on the upper ends of the corresponding abutting round blocks 7 and the abutting strips 10. At this time, it is only necessary to press the movable rectangular frame 2 downward. When the movable rectangular frame 2 moves toward the direction of the mounting base 1, all the rotating folding arms 3 will bend. At this time, the first folding air tube 6 and the second folding air tube 8 will be compressed. When the first mounting plate 4 and the second mounting plate 37 move downward, due to the large elastic force of the second elastic telescopic arm 23, the recovery wire wheel 25 will drive the second mounting plate 37 to rotate 180 degrees due to the pulling of the connecting rope 24. When the second mounting plate 37 continues to move downward, the second mounting plate 37 can be The plate 37 is pulled, and at the same time, when the second folded air tube 8 is compressed, the gas inside the second folded air tube 8 will enter all the fourth folded air tubes 19, and the fourth folded air tubes 19 will drive the moving strip 12 and the corresponding abutting arm 20 to move. When the folded air wheel 21 on the outer wall of the abutting arm 20 abuts against the abutting arm 20 and the touch screen and the display layer, since the abutting arm 20 is 90 degrees, the touch screen and the display layer can be straightened and fixed. When the second mounting plate 37 continues to move downward, the touch screen and the display layer are fitted and abutted, and when all the folded air wheels 21 abut, they will shrink, so that the touch screen and the display layer can fit better.

[0040] It is worth noting that when the touch screen is attached to the display layer, the abutment plate 33 and the air vent 28 will abut against each other, and the gas inside the first folded air tube 6 will not be discharged from the air vent 28. When the first abutment block 30 abuts against the second abutment block 34, the first abutment block 30 is abutted and pushed by the second abutment block 34, and the second abutment block 34 drives the abutment plate 33 to move through the connecting rod 31. When the abutment plate 33 is separated from the abutment with the air vent 28, the gas inside the first folded air tube 6 will pass through the second connecting tube 26 and the third connecting tube 2 9 enters the interior of the fourth connecting tube 35, and then enters the interior of the first connecting tube 27 from the interior of the fourth connecting tube 35, so that the gas inside the first connecting tube 27 enters the interior of the third folding air tube 18, and the third folding air tube 18 and the contact telescopic arm 16 will expand and extend, and the contact telescopic arm 16 will push the display layer inside the second mounting plate 37, so that the touch screen and the display layer are more closely attached, and the air generated between the touch screen and the display layer will be discharged through the roller 17, so that the touch screen and the display layer can be attached, which is simple and convenient;

[0041] After the bonding is completed, release the pressure on the movable rectangular frame 2. At this time, rotating the folding arm 3 will drive the movable rectangular frame 2 and the second mounting plate 37 to reset. At this time, the first folding air tube 6 and the second folding air tube 8 will reset. When the second folding air tube 8 is reset, it will drive the fourth folding air tube 19 to reset and contract. The fourth folding air tube 19 drives the abutment arm 20 and all the abutment arms 20 and the folding air wheel 21 to reset. When the first folding air tube 6 is reset, due to the negative pressure generated inside the first folding air tube 6, the abutment plate 33 will be separated from the abutment with the outer wall of the air vent 28, the first folding air tube 6 will inhale, and the first folding air tube 6 will gradually return to its original state, and then the next group of bonding can be carried out.

[0042] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A positioning device for pressing a screen of an electronic product, comprising a mounting base (1), characterized in that: A movable rectangular frame (2) is arranged above the mounting base (1); the movable rectangular frame (2) and the mounting base (1) are rotatably connected via a plurality of rotatable folding arms (3) having a reset function; a first mounting plate (4) is fixedly connected to the upper end of the mounting base (1); a second mounting plate (37) having a reset function is rotatably connected inside the movable rectangular frame (2); and a limiting mechanism (101) capable of fixing the position of the touch screen and the display layer is fixedly connected inside the second mounting plate (37) and the first mounting plate (4); A discharging mechanism (201) for discharging the touch screen and the display layer is fixedly installed between the mounting base (1) and the movable rectangular frame (2); an abutting round block (7) is fixedly connected to the bottom end of the inner wall of the first mounting plate (4); and an abutting strip (10) is fixedly connected to the inner wall of the second mounting plate (37); when the touch screen and the display layer are placed on the upper ends of the corresponding abutting round blocks (7) and abutting strips (10), the touch screen and the display layer are prevented from abutting against the bottom ends of the inner walls of the first mounting plate (4) and the second mounting plate (37); Each group of the limiting mechanisms (101) comprises two groups of moving bars (12), each two groups of the moving bars (12) are slidably connected to the inner wall of the corresponding second mounting plate (37), each two groups of the corresponding moving bars (12) have opposite ends fixedly connected to first elastic telescopic arms (13), and each group of the first elastic telescopic arms (13) have ends away from the moving bars (12) rotatably connected to abutment arms (20) having a reset function; The outer wall of the abutment arm (20) is rotatably connected to the folding air wheel (21); the front and rear ends of the two moving bars (12) are fixedly connected to mounting racks (14); a connecting gear (15) is provided between the two groups of mounting racks (14); each group of the connecting gears (15) is rotatably connected to the outer wall of the corresponding second mounting plate (37) and the first mounting plate (4); the mounting racks (14) and the corresponding connecting gears (15) are meshed with each other; each group of the moving bars (12) and the corresponding second mounting plate (37) and the inner wall of the first mounting plate (4) are fixedly connected via a fourth folding air pipe (19); The upper end of the mounting base (1) is fixedly connected to a connecting frame (9), one end of the second mounting plate (37) close to the connecting frame (9) is fixedly connected to a recovery wire wheel (25), and a connecting rope (24) is wound around the outer wall of the recovery wire wheel (25), and the free end of the connecting rope (24) is fixedly connected to the connecting frame (9) via a second elastic telescopic arm (23).

2. The positioning device for pressing the screen of an electronic product according to claim 1, characterized in that: A second folding air pipe (8) is fixedly connected between the movable rectangular frame (2) and the mounting base (1), and the second folding air pipe (8) is fixedly connected to a fourth folding air pipe (19).

3. The positioning device for pressing the screen of an electronic product according to claim 1, characterized in that: The unloading mechanism (201) comprises two groups of third folding air pipes (18), each group of the third folding air pipes (18) is fixedly connected to the inner wall of the second mounting plate (37), and the output end of the third folding air pipe (18) is fixedly connected to an abutting telescopic arm (16), and the abutting telescopic arm (16) and the third folding air pipe (18) are fixedly connected via a pipeline. A first folding air pipe (6) is also fixedly connected between the mounting base (1) and the movable rectangular frame (2), and the first folding air pipe (6) is fixedly connected to the third folding air pipe (18).

4. The positioning device for pressing the screen of an electronic product according to claim 3, characterized in that: The upper end of the mounting base (1) is also fixedly connected to a first connecting tube (27), and the first connecting tube (27) is fixedly connected to a third folding air tube (18); the outer wall of the first connecting tube (27) is fixedly connected to a fourth connecting tube (35), and the interior of the fourth connecting tube (35) is fixedly connected to a second abutting block (34); the upper end of the first folding air tube (6) is fixedly connected to a second connecting tube (26), and the end of the second connecting tube (26) away from the first mounting plate (4) is fixedly connected to a third connecting tube (29), and the interior of the third connecting tube (29) is provided with two groups of air vents (28).

5. The positioning device for pressing the screen of an electronic product according to claim 4, characterized in that: An abutment plate (33) having a reset function is slidably connected to the inner wall of the third connecting tube (29), one end of the abutment plate (33) away from the second connecting tube (26) is fixedly connected to a first abutment block (30), and the abutment plate (33) abuts against the outer wall of the air vent (28).

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