Part assembling device for display screen production and assembling process

Abstract

The invention discloses a part assembling device for display screen production and an assembling process, and particularly relates to the field of display screen machining.The part assembling device for display screen production comprises a feeding mechanism, the feeding mechanism comprises a first conveying belt and a second conveying belt, the first conveying belt is used for conveying display modules, and the second conveying belt is used for conveying arc-shaped rear cover plates; a transfer mechanism is arranged between the first conveying belt and the second conveying belt and comprises a mechanical arm, and a positioning assembly is arranged at the execution end of the mechanical arm. The positioning assembly comprises a positioning seat, and an exhaust pipe is slidably arranged on the positioning seat. The positioning assembly is arranged, the positioning base moves towards the arc-shaped rear cover plate, it is ensured that the air nozzle can be tightly attached to the arc-shaped rear cover plate under the action of the elastic force of the first elastic piece, the arc-shaped rear cover plates of different curvature specifications can be assembled, the stable positioning effect is achieved, the accuracy of the rear cover plate in the assembling process is improved, and the assembling efficiency is improved. And the assembly efficiency is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of display screen processing, and more specifically, to a parts assembly device and an assembly process for display screen production. Background Art

[0002] A computer display is an output device used to display information processed by a computer. It presents content by converting electrical signals into visible light. In recent years, with the advancement and innovation of technology, in order to improve user experience and visual effects and enhance the user's sense of immersion, manufacturers have designed curved display screens. In order to reduce visual distortion, curved display screens will increase the degree of curvature of the curved display screen. A larger degree of curvature can make the distance between the edge of the screen and the user's eyes more consistent, providing a more natural visual experience.

[0003] When assembling a curved display screen, in order to facilitate the bending process, the backlight unit and the curved front cover plate are first assembled, then the main control board and the power board are fixed on the backlight unit, and all the lines are connected to form a display module, and finally the curved rear cover plate and the display module are assembled. In the prior art, when the curved rear cover plate and the display module are assembled, the display module is placed on a support station. In order to improve the assembly efficiency and avoid damage to the curved rear cover plate, the curved rear cover plate is positioned by suction using a suction nozzle with negative pressure, and then the curved rear cover plate is transferred to the top of the display module so that the curved rear cover plate and the display module are clamped together, and finally the curved rear cover plate and the display module are fixed using screws and other fasteners.

[0004] However, the above-mentioned prior art still has shortcomings. Curved display screens with different curvature radii have different curvature degrees. When assembling curved back covers of different batches of specifications, the curved back cover is positioned by pneumatic adsorption with a suction nozzle, which cannot ensure a tight fit between the suction nozzle and the curved back cover. The positioning of the curved back cover during the assembly process is inaccurate, resulting in the inability to clamp the curved back cover and the display module, reducing assembly efficiency and resulting in less than ideal use effect. Summary of the invention

[0005] The present invention provides a parts assembly device and assembly process for display screen production, and aims to solve the following problem: in the existing parts assembly device for display screen production, curved display screens with different curvature radii have different curvature degrees, and when assembling curved back covers of different batches and specifications, the curved back covers are positioned by pneumatic adsorption using a suction nozzle, and it is impossible to ensure that the suction nozzle and the curved back cover are tightly fitted, and the positioning of the curved back cover during the assembly process is inaccurate, resulting in the inability to clamp the curved back cover and the display module, thereby reducing assembly efficiency and resulting in less than ideal use effect.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a parts assembly device for display screen production, comprising a feeding mechanism, the feeding mechanism comprising a conveyor belt 1 and a conveyor belt 2, the conveyor belt 1 is used to convey the display module, the conveyor belt 2 is used to convey the arc-shaped rear cover plate, a transfer mechanism is arranged between the conveyor belt 1 and the conveyor belt 2, the transfer mechanism comprises a mechanical arm, and a positioning assembly is arranged at the execution end of the mechanical arm; The positioning assembly includes a positioning seat, on which an exhaust pipe is slidably arranged, an elastic member is arranged between the positioning seat and the exhaust pipe, the top end of the exhaust pipe is connected to a negative pressure device, and an air nozzle is arranged at the bottom end of the exhaust pipe. The robotic arm drives the positioning assembly to move to the top of the curved rear cover plate, and the positioning seat moves toward the curved rear cover plate so that the air nozzle fits with the surface of the curved rear cover plate, and negative pressure is generated in the exhaust pipe by starting the negative pressure device, so that the air nozzle positions the curved rear cover plate.

[0007] In a preferred embodiment, the positioning assembly also includes a hollow sleeve, which is fixedly arranged in the positioning seat, and a baffle is fixedly arranged on the exhaust pipe, the baffle is in contact with the top of the hollow sleeve, and an elastic member is arranged between the baffle and the top inner wall of the positioning seat.

[0008] In a preferred embodiment, a connecting seat is fixedly provided on the air extraction pipe, the connecting seat is slidably provided in the hollow sleeve, and the air extraction pipe and the hollow sleeve are slidably provided.

[0009] In a preferred embodiment, two valves are fixedly connected to the hollow sleeve, and the two valves are symmetrically arranged on the hollow sleeve. One end of the valve away from the hollow sleeve is fixedly connected to a connecting pipe.

[0010] In a preferred embodiment, a sealing mechanism is provided in the exhaust pipe, and the sealing mechanism includes a movable seat, which is slidably provided in the exhaust pipe, and an air hole is opened on the movable seat. A sealing seat is fixedly provided in the exhaust pipe, and the air hole is adapted to the sealing seat. An elastic member 2 is provided between the movable seat and the inner wall of the exhaust pipe.

[0011] In a preferred embodiment, the transfer mechanism includes a linear drive, the linear drive is located between conveyor belt 1 and conveyor belt 2, a rotating seat is fixedly provided on the output shaft of the linear drive, and the robot arm is rotatably provided on the rotating seat.

[0012] In a preferred embodiment, an angle adjustment mechanism is provided on the execution end of the robot arm, and the angle adjustment mechanism includes a fixed seat, which is fixed to the execution end of the robot arm, and a rotation driver is fixed on the fixed seat, and an auxiliary seat is fixed on the output shaft of the rotation driver, and the auxiliary seat is fixed to the positioning seat.

[0013] In a preferred embodiment, a limit seat is fixedly provided in the exhaust pipe, the limit seat is located below the blocking seat, and the limit seat is matched with the bottom of the movable seat.

[0014] In a preferred embodiment, a guide shaft is fixedly arranged on the limiting seat, the guide shaft is vertically arranged on the limiting seat, and the movable seat is slidably sleeved on the guide shaft.

[0015] An assembly process of a parts assembly device for display screen production includes the following steps: Step 1: Place the display module on conveyor belt 1, and place the curved rear cover on the curved rear cover; Step 2: The output end of the linear actuator drives the robot arm to move horizontally, and the execution end of the robot arm drives the positioning seat to move to just above the arc-shaped rear cover plate, and then the execution end of the robot arm drives the positioning seat to move toward the arc-shaped rear cover plate; Step 3: The air nozzle contacts the surface of the curved rear cover plate. As the positioning seat continues to move downward, the elastic member is squeezed and deformed. When all the air nozzles are tightly fitted with the curved rear cover plate, the positioning seat no longer moves downward. Step 4: Start the negative pressure device to generate negative pressure in the exhaust pipe, use the air nozzle to position the curved rear cover, then move the curved rear cover to the top of the display module by moving the positioning seat, and then assemble the curved rear cover and the display module.

[0016] The beneficial effects of the present invention are: 1. The present invention sets a positioning assembly, and the positioning seat moves toward the curved rear cover plate. Under the action of an elastic force of the elastic member, it is ensured that the air nozzle can fit tightly with the curved rear cover plate. The curved rear cover plates with different curvature specifications can be assembled and have a stable positioning effect, thereby improving the accuracy of the rear cover plate during the assembly process and further improving the assembly efficiency.

[0017] 2. The present invention provides a sealing mechanism. If the air nozzle and the arc-shaped rear cover plate cannot be sealed due to the presence of the groove, the air hole and the sealing seat are engaged when the movable seat is driven to move under the action of negative pressure, thereby blocking the air extraction pipe, thereby improving the response speed of the negative pressure system and extending the service life of the negative pressure equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of a conveyor belt 1 of the present invention.

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the transmission belt 2 of the present invention.

[0020] Figure 3 It is a schematic structural diagram of the front view of the linear actuator of the present invention.

[0021] Figure 4 It is a schematic diagram of the cross-sectional structure of the positioning seat of the present invention from the front view.

[0022] Figure 5It is a schematic diagram of the cross-sectional structure of the hollow casing of the present invention from a front view.

[0023] Figure 6 Schematic diagram of the movement trajectory of the air extraction pipe of the present invention.

[0024] Figure 7 It is a schematic diagram of the cross-sectional structure of the exhaust pipe of the present invention from a front view.

[0025] Figure 8 It is a schematic diagram of the moving track of the moving base of the present invention.

[0026] Fig. 9 It is a structural schematic diagram of the front view of the rotary driver of the present invention.

[0027] Fig.10 It is a schematic diagram of the assembly process of the present invention.

[0028] The accompanying drawings are marked as follows: 1. feeding mechanism; 11. conveyor belt 1; 12. conveyor belt 2; 2. transfer mechanism; 21. linear drive; 22. rotating seat; 23. robotic arm; 3. positioning assembly; 31. positioning seat; 32. hollow sleeve; 321. valve; 33. exhaust pipe; 331. air nozzle; 332. connecting seat; 34. elastic part 1; 4. sealing mechanism; 41. moving seat; 411. air hole; 42. sealing seat; 43. elastic part 2; 5. angle adjustment mechanism; 51. fixed seat; 52. rotating drive; 53. auxiliary seat; a1. display module; b1. arc-shaped rear cover. DETAILED DESCRIPTION

[0029] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0030] Refer to the instruction manual Figures 1 to 6 A parts assembly device for display screen production includes a feeding mechanism 1, the feeding mechanism 1 includes a conveyor belt 11 and a conveyor belt 12, the conveyor belt 11 is used to convey the display module a1, the conveyor belt 12 is used to convey the arc-shaped rear cover b1, a transfer mechanism 2 is arranged between the conveyor belt 11 and the conveyor belt 12, the transfer mechanism 2 includes a mechanical arm 23, and a positioning component 3 is arranged at the execution end of the mechanical arm 23; The positioning assembly 3 includes a positioning seat 31, on which an exhaust pipe 33 is slidably arranged, an elastic member 34 is arranged between the positioning seat 31 and the exhaust pipe 33, the top end of the exhaust pipe 33 is connected to a negative pressure device, and the bottom end of the exhaust pipe 33 is provided with an air nozzle 331. The robot arm 23 drives the positioning assembly 3 to move to the top of the arc-shaped rear cover plate b1, and the positioning seat 31 moves toward the arc-shaped rear cover plate b1 so that the air nozzle 331 fits with the surface of the arc-shaped rear cover plate b1, and negative pressure is generated in the exhaust pipe 33 by starting the negative pressure device, and the air nozzle 331 positions the arc-shaped rear cover plate b1.

[0031] It should be noted that the negative pressure device is set as a vacuum pump, and the display module a1 is composed of a backlight unit, a curved front cover, a main control board, a power board and connecting lines. After assembling the curved rear cover b1 with the display module a1, a complete curved display screen is obtained.

[0032] It should also be noted that both the conveyor belt 11 and the conveyor belt 2 12 include a support frame, on which two transmission rollers are rotatably arranged, and the two transmission rollers are connected to the same conveyor belt for transmission, and a motor is fixedly arranged on the support frame, and the output shaft of the motor is fixedly arranged with the transmission roller. The conveying surface of the conveyor belt 11 is provided with an arched flexible support seat, and after the display module a1 is placed on the conveyor belt in the conveyor belt 11, the arched flexible support seat is tightly fitted with the arc surface of the display module a1, which can prevent the display module a1 from being damaged during the conveying process. Both the conveyor belt 11 and the conveyor belt 2 12 are provided with corresponding limiters and positioners, and as the conveyor belt conveys the display module a1 and the arc-shaped rear cover plate b1, when the display module a1 and the arc-shaped rear cover plate b1 move to the specified position, the limiters and positioners can accurately position the display module a1 and the arc-shaped rear cover plate b1 on the conveyor belt, which is a mature prior art and will not be described in detail here.

[0033] Furthermore, a robot is provided at the edge of the conveyor belt 11, and an automatic screwing mechanism is provided at the execution end of the robot. When the display module a1 and the curved rear cover b1 are combined together, the automatic screwing mechanism can fix the display module a1 and the curved rear cover b1 together by screw thread connection, so that the connection between the display module a1 and the curved rear cover b1 is tighter. As mature existing technologies, the robot and the automatic screwing mechanism are not elaborated in detail here.

[0034] The specific implementation scenario is as follows: the display module a1 is placed on the conveyor belt 11, and the curved rear cover plate b1 is placed on the conveyor belt 2 12. The display module a1 and the curved rear cover plate b1 can be moved to the specified position through the transmission conveyor belt. First, the robot arm 23 drives the positioning seat 31 to move to the top of the curved rear cover plate b1, and then the robot arm 23 drives the positioning seat 31 to move toward the curved rear cover plate b1, that is, the positioning seat 31 is driven to move vertically downward. When the positioning seat 31 moves to a certain extent, since the curved rear cover plate b1 has a certain curvature, that is, the upper surface of the curved rear cover plate b1 is not at the same horizontal height, the air nozzle 331 located in the middle will first contact the middle surface of the curved rear cover plate b1. As the positioning seat 31 continues to move downward, more and more air nozzles 331 will contact the surface of the curved rear cover plate b1, and the corresponding elastic member 34 will be deformed under the action of the extrusion force, and at the same time, the exhaust pipe 3 3 generates a downward reaction force. When all the air nozzles 331 are in contact with the surface of the curved rear cover plate b1, the corresponding elastic members 34 on the air extraction pipe 33 are deformed due to the external force and generate a downward force on the air extraction pipe 33, so that the air nozzle 331 can be closely attached to the surface of the curved rear cover plate b1. Then, the negative pressure device is turned on. The negative pressure device extracts the air in the air extraction pipe 33 to form a negative pressure inside the air extraction pipe 33. After the negative pressure is formed inside the air nozzle 331, it is more closely attached to the curved rear cover plate b1. Then, the positioning seat 31 moves upward, and the air nozzle 331 can lift the curved rear cover plate b1 and move synchronously with the positioning seat 31. After the positioning seat 31 moves to the top of the display module a1, the curved rear cover plate b1 is aligned with the display module a1 and the curved rear cover plate b1 is buckled on the display module a1. The display module a1 and the curved rear cover plate b1 are connected together by the automatic screwing mechanism. Compared with the prior art, when producing different batches of curved display screens, there is no need to adjust the production line according to the curvature of the curved display screen and the surface size of the display screen. The positioning component 3 can be adaptively adjusted to stably position display screens with different curvatures, thereby improving production efficiency.

[0035] Refer to the instruction manual Figures 4 to 6When the air nozzle 331 is tightly fitted with the surface of the curved rear cover b1, during the upward movement of the positioning seat 31, if some of the exhaust pipes 33 and the positioning seat 31 slide, some of the exhaust pipes 33 will be unable to provide traction to the curved rear cover b1, so that the effective traction on the curved rear cover b1 is concentrated on some of the exhaust pipes 33, which is easy to cause damage to the exhaust pipes 33. Therefore, in the process of lifting the curved rear cover b1, in order to ensure that all the exhaust pipes 33 can provide effective traction to the curved rear cover b1, specifically, the positioning assembly 3 also includes a hollow sleeve 32, the hollow sleeve 32 is fixedly arranged in the positioning seat 31, and a baffle is fixedly arranged on the exhaust pipe 33, the baffle is in contact with the top of the hollow sleeve 32, and an elastic member 34 is arranged between the baffle and the top inner wall of the positioning seat 31. A connection seat 332 is fixedly arranged on the air extraction pipe 33, and the connection seat 332 is slidably arranged in the hollow sleeve 32, and the air extraction pipe 33 is slidably arranged with the hollow sleeve 32. Two valves 321 are fixedly connected to the hollow sleeve 32, and the two valves 321 are symmetrically arranged on the hollow sleeve 32, and one end of the valve 321 away from the hollow sleeve 32 is fixedly connected with a connecting pipe.

[0036] It should be noted that the elastic member 34 is configured as a spring, the top end of the spring is fixedly disposed on the top inner wall of the positioning seat 31, and the bottom end of the spring is fixedly disposed on the top of the baffle.

[0037] It should also be noted that the connecting seat 332 divides the inner space of the hollow sleeve 32 into two independent cavities. Figure 5 For example, the cavity located in the upper half of the connecting seat 332 is cavity one, and the cavity located in the lower half of the connecting seat 332 is cavity two. Due to the existence of the connecting seat 332, cavity one and cavity two cannot be connected. The valve 321 is configured as a solenoid valve, and the end of the connecting pipe away from the valve 321 is fixedly connected to a pump, and the pump is used to transport gas or liquid into the hollow casing 32.

[0038] In this embodiment, after the gas nozzle 331 contacts the arc-shaped rear cover plate b1, as the positioning seat 31 continues to move toward the arc-shaped rear cover plate b1, the connecting seat 332 slides upward in the hollow sleeve 32, the space in the cavity 1 gradually decreases, and the space in the cavity 2 gradually increases. During the upward sliding process of the hollow sleeve 32, the gas or liquid medium is introduced into the cavity 2 through the valve 321, and at the same time, during the upward sliding process of the hollow sleeve 32, the gas or liquid medium is discharged from the cavity 1 through the corresponding valve 321. When the connecting seat 332 moves to the specified position in the hollow sleeve 32, the valve is closed at this time. 321. Since there is water or liquid medium in both cavity one and cavity two, the connection seat 332 is positioned by the pressure difference through the changes in cavity one and cavity two. Even if the connection seat 332 is subjected to external force in the vertical direction, it cannot be displaced in the vertical direction, thereby realizing the working principle of movement of the output shaft of the "cylinder". Then, negative pressure is generated in the exhaust pipe 33 to position the arc-shaped rear cover plate b1 through the valve 321. During the upward movement of the positioning seat 31, since the exhaust pipe 33 is positioned, each exhaust pipe 33 can provide traction to the arc-shaped rear cover plate b1, thereby extending the service life of the exhaust pipe 33.

[0039] Refer to the instruction manual Figure 7 and Figure 8 In order to reduce the use of power sources and reduce the use cost and maintenance difficulty of the equipment, the top ends of multiple exhaust pipes 33 are connected to the same negative pressure device. Starting one negative pressure device can generate negative pressure in multiple exhaust pipes 33. In order to make the curved rear cover b1 more beautiful, some e-sports curved display screen products will open some grooves on the surface of the curved rear cover b1, and cooperate with the LED light strip to make the curved rear cover b1 have a stronger visual impact. When all the air nozzles 331 are tightly fitted with the surface of the curved rear cover b1, when the air nozzle 331 contacts the groove opened on the curved rear cover b1, the negative pressure device cannot form a closed state with the air nozzle 331. After the equipment is started, the corresponding air nozzle 331 will continue to pump air and fail to form negative pressure, resulting in a delay in the response of the entire negative pressure system, and the negative pressure device will continue to operate when it cannot form an effective negative pressure, resulting in overload and overheating, which reduces the service life of the negative pressure device. In order to solve the above problems, specifically, a blocking mechanism 4 is provided in the air extraction pipe 33, and the blocking mechanism 4 includes a moving seat 41, which is slidably arranged in the air extraction pipe 33, and an air hole 411 is provided on the moving seat 41. A blocking seat 42 is fixedly arranged in the air extraction pipe 33, and the air hole 411 is adapted to the blocking seat 42. An elastic member 43 is provided between the moving seat 41 and the inner wall of the air extraction pipe 33. A limit seat is fixedly arranged in the air extraction pipe 33, and the limit seat is located below the blocking seat 42, and the limit seat is adapted to the bottom of the moving seat 41. A guide shaft is fixedly arranged on the limit seat, and the guide shaft is vertically arranged on the limit seat, and the moving seat 41 is slidably sleeved on the guide shaft.

[0040] It should be noted that the second elastic member 43 is configured as a spring, the bottom end of the spring is fixedly disposed on the top of the movable seat 41 , and the top end of the spring is fixedly disposed on the inner wall of the exhaust pipe 33 .

[0041] It should also be noted that after the air nozzle 331 is fitted with the surface of the curved rear cover b1, the negative pressure device is started, and the negative pressure device draws air from the exhaust pipe 33 to form a negative pressure in the exhaust pipe 33 and the air nozzle 331; if there is a groove at the contact position between the air nozzle 331 and the curved rear cover b1, a sealing state cannot be formed between the air nozzle 331 and the curved rear cover b1. As the negative pressure device continues to operate, the exhaust pipe 33 will draw external air through the air hole 411, and the negative pressure exhaust flow rate is greater than the air circulation rate of the air hole 411, resulting in a pressure difference between the upper and lower parts. The movable seat 41 is pushed upward by the external pressure, and the movement of the movable seat 41 will cause the elastic member 43 to be compressed. When the seat 41 moves to a certain position, the blocking seat 42 will be stuck in the air hole 411 to achieve the blocking of the air hole 411. Under the negative pressure condition, the position of the air hole 411 will remain unchanged, thereby achieving the effect of blocking a single independent exhaust pipe 33. When it is necessary to release the positioning of the curved rear cover b1, the negative pressure device is turned off. When ventilation is performed in the exhaust pipe 33, the negative pressure inside the exhaust pipe 33 disappears, and the moving seat 41 is reset under the action of the elastic force of the elastic member 43. Even if the air nozzle 331 contacts the groove on the curved rear cover b1, the exhaust pipe 33 can be actively blocked to avoid continuous exhaust by the negative pressure device, thereby extending the service life of the negative pressure device.

[0042] Refer to the instruction manual Figures 1 to 3 In order to facilitate the clamping of the arc-shaped rear cover b1, specifically, the transfer mechanism 2 includes a linear drive 21, the linear drive 21 is located between the conveyor belt 11 and the conveyor belt 2 12, a rotating seat 22 is fixedly provided on the output shaft of the linear drive 21, and a mechanical arm 23 is rotatably provided on the rotating seat 22.

[0043] It should be noted that the linear driver 21 is configured as a linear motor, the rotating seat 22 is rotatably disposed on the output shaft of the linear motor, and the movement of the output shaft of the linear motor drives the mechanical arm 23 to move horizontally.

[0044] Refer to the instruction manual Fig. 9When assembling the display module a1 and the curved rear cover b1, for the sake of assembly efficiency, corresponding fasteners are generally provided on the display module a1 and the curved rear cover b1. The display module a1 and the curved rear cover b1 are first fastened and positioned by the fasteners, and then finally positioned by screws. After the exhaust pipe 33 grabs and transports the curved rear cover b1, if the curved rear cover b1 is directly fastened on the display module a1, it is required that the display module a1 and the curved rear cover b1 are completely matched on all sides, which makes assembly difficult. In order to solve this problem, specifically, an angle adjustment mechanism 5 is provided on the execution end of the robot arm 23, and the angle adjustment mechanism 5 includes a fixed seat 51, and the fixed seat 51 is fixedly arranged with the execution end of the robot arm 23. A rotation driver 52 is fixedly arranged on the fixed seat 51, and an auxiliary seat 53 is fixedly arranged on the output shaft of the rotation driver 52, and the auxiliary seat 53 is fixedly arranged with the positioning seat 31.

[0045] It should be noted that the rotary driver 52 is configured as a motor, and the output shaft of the motor is fixedly disposed on the auxiliary seat 53 .

[0046] It should also be noted that when the exhaust pipe 33 positions the curved rear cover b1 and transfers it to the top of the display module a1, the output shaft of the driving rotation driver 52 drives the positioning seat 31 to rotate, so that one side of the curved rear cover b1 is fitted with one side of the display module a1, and then as the output shaft of the driving rotation driver 52 rotates, the positioning seat 31 is driven to rotate, so that the display module a1 and the curved rear cover b1 are gradually and completely fitted together, thereby reducing the difficulty during assembly.

[0047] Refer to the instruction manual Fig.10 , an assembly process of a parts assembly device for display screen production, specifically, comprising the following steps: Step 1: placing the display module a1 on the conveyor belt 11, and placing the arc-shaped rear cover plate b1 on the arc-shaped rear cover plate b1; Step 2: The output end of the linear actuator 21 drives the mechanical arm 23 to move horizontally, and the execution end of the mechanical arm 23 drives the positioning seat 31 to move to the top of the arc-shaped rear cover plate b1, and then the execution end of the mechanical arm 23 drives the positioning seat 31 to move toward the arc-shaped rear cover plate b1; Step 3: The air nozzles 331 are in contact with the surface of the arc-shaped rear cover plate b1. As the positioning seat 31 continues to move downward, the elastic member 34 is squeezed and deformed. When all the air nozzles 331 are tightly fitted with the arc-shaped rear cover plate b1, the positioning seat 31 no longer moves downward. Step 4: Start the negative pressure device to generate negative pressure in the exhaust pipe 33, and use the air nozzle 331 to position the arc-shaped rear cover b1. Then, move the arc-shaped rear cover b1 to the top of the display module a1 by moving the positioning seat 31, and then assemble the arc-shaped rear cover b1 and the display module a1.

[0048] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

Claims

1. A parts assembly device for display screen production, characterized in that: The invention comprises a feeding mechanism (1), wherein the feeding mechanism (1) comprises a conveyor belt 1 (11) and a conveyor belt 2 (12), wherein the conveyor belt 1 (11) is used to convey a display module (a1), and the conveyor belt 2 (12) is used to convey a curved rear cover plate (b1), and a transfer mechanism (2) is provided between the conveyor belt 1 (11) and the conveyor belt 2 (12), wherein the transfer mechanism (2) comprises a mechanical arm (23), and a positioning assembly (3) is provided at an execution end of the mechanical arm (23); The positioning assembly (3) comprises a positioning seat (31), on which an exhaust pipe (33) is slidably arranged, an elastic member (34) is arranged between the positioning seat (31) and the exhaust pipe (33), the top end of the exhaust pipe (33) is connected to a negative pressure device, and the bottom end of the exhaust pipe (33) is provided with an air nozzle (331), the mechanical arm (23) drives the positioning assembly (3) to move to the top of the arc-shaped rear cover plate (b1), the positioning seat (31) moves toward the arc-shaped rear cover plate (b1) so that the air nozzle (331) is in contact with the surface of the arc-shaped rear cover plate (b1), and negative pressure is generated in the exhaust pipe (33) by starting the negative pressure device, and the air nozzle (331) positions the arc-shaped rear cover plate (b1).

2. A display screen production parts assembly device according to claim 1, characterized in that: The positioning assembly (3) further comprises a hollow sleeve (32), the hollow sleeve (32) being fixedly arranged in the positioning seat (31), a baffle being fixedly arranged on the exhaust pipe (33), the baffle being in contact with the top of the hollow sleeve (32), and the elastic member 1 (34) being arranged between the baffle and the top inner wall of the positioning seat (31).

3. The parts assembly device for display screen production according to claim 2, characterized in that: A connecting seat (332) is fixedly provided on the air extraction pipe (33); the connecting seat (332) is slidably arranged in the hollow sleeve (32); and the air extraction pipe (33) and the hollow sleeve (32) are slidably arranged.

4. The parts assembly device for display screen production according to claim 3, characterized in that: The hollow sleeve (32) is fixedly connected to two valves (321), the two valves (321) are symmetrically arranged on the hollow sleeve (32), and one end of the valve (321) away from the hollow sleeve (32) is fixedly connected to a connecting pipe.

5. The parts assembly device for display screen production according to claim 4, characterized in that: A blocking mechanism (4) is arranged in the air extraction pipe (33), and the blocking mechanism (4) comprises a movable seat (41), the movable seat (41) is slidably arranged in the air extraction pipe (33), an air hole (411) is opened on the movable seat (41), a blocking seat (42) is fixedly arranged in the air extraction pipe (33), the air hole (411) is matched with the blocking seat (42), and an elastic member (43) is arranged between the movable seat (41) and the inner wall of the air extraction pipe (33).

6. The parts assembly device for display screen production according to claim 5, characterized in that: The transfer mechanism (2) comprises a linear drive (21), the linear drive (21) being located between the first conveyor belt (11) and the second conveyor belt (12), a rotating seat (22) being fixedly arranged on the output shaft of the linear drive (21), and the mechanical arm (23) being rotatably arranged on the rotating seat (22).

7. The parts assembly device for display screen production according to claim 6, characterized in that: An angle adjustment mechanism (5) is provided on the execution end of the mechanical arm (23), the angle adjustment mechanism (5) comprising a fixed seat (51), the fixed seat (51) being fixedly arranged on the execution end of the mechanical arm (23), a rotation driver (52) being fixedly arranged on the fixed seat (51), an auxiliary seat (53) being fixedly arranged on the output shaft of the rotation driver (52), and the auxiliary seat (53) being fixedly arranged on the positioning seat (31).

8. The parts assembly device for display screen production according to claim 7, characterized in that: A limit seat is fixedly arranged in the exhaust pipe (33), the limit seat is located below the blocking seat (42), and the limit seat is adapted to the bottom of the movable seat (41).

9. The parts assembly device for display screen production according to claim 8, characterized in that: A guide shaft is fixedly arranged on the limit seat, the guide shaft is vertically arranged on the limit seat, and the movable seat (41) is slidably sleeved on the guide shaft.

10. An assembly process of the display screen production parts assembly device according to claim 9, characterized in that: The following steps are involved: Step 1: placing the display module (a1) on the conveyor belt 1 (11), and placing the curved rear cover plate (b1) on the curved rear cover plate (b1); Step 2: the output end of the linear actuator (21) drives the mechanical arm (23) to move horizontally, the execution end of the mechanical arm (23) drives the positioning seat (31) to move to the top of the curved rear cover plate (b1), and then the execution end of the mechanical arm (23) drives the positioning seat (31) to move toward the curved rear cover plate (b1); Step 3: The air nozzle (331) contacts the surface of the arc-shaped rear cover plate (b1), and as the positioning seat (31) continues to move downward, the elastic member 1 (34) is squeezed and deformed. When all the air nozzles (331) are tightly fitted with the arc-shaped rear cover plate (b1), the positioning seat (31) no longer moves downward; Step 4: Start the negative pressure device to generate negative pressure in the exhaust pipe (33), and use the air nozzle (331) to position the curved rear cover plate (b1). Then, move the curved rear cover plate (b1) to the top of the display module (a1) by moving the positioning seat (31), and then assemble the curved rear cover plate (b1) and the display module (a1).

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