A pre-alignment machine for display screen assembly

Abstract

The utility model discloses a kind of pre-alignment machines for display screen assembly, comprising: gantry, workbench is arranged at interval on gantry, liquid crystal module feeding device, feeding device, transfer device, glass cover plate feeding device, compression device and first photographing module being located in the adjacent position of compression device, workbench moves along X axis direction;Liquid crystal module feeding device moves and sends liquid crystal module to workbench along first Y axis direction;Feeding device includes the tape conveying mechanism of supply adhesive paper;Transfer device end is provided with manipulator, manipulator is grabbed adhesive paper to liquid crystal module, and film is torn to liquid crystal module along predetermined angle;Compression device end is equipped with the compression piece that liquid crystal module and glass cover plate are pasted to implement;First photographing module lens is towards the pasting area of liquid crystal module and glass cover plate on workbench.This pre-alignment machine for display screen assembly of the utility model can automatically complete liquid crystal module and glass cover plate compression, improve production quality and production efficiency.

Description

Technical Field

[0001] This application relates to the field of display assembly equipment technology, and in particular to a pre-alignment machine for display assembly. Background Technology

[0002] In the process of assembling a display screen, bonding the LCD module to the glass cover is a crucial step. The precision and quality of bonding directly determine the display effect and overall performance of the display device.

[0003] Before bonding the LCD module to the glass cover, a series of pre-processing operations are required, among which removing the protective film from the LCD module surface is a crucial step. Traditional film removal methods mostly rely on manual operation or simple mechanical devices. Manual film removal is not only inefficient, but also difficult to guarantee accuracy due to human factors, easily causing scratches, contamination, and other damage to the LCD module surface during the process, thus affecting the subsequent bonding quality. Simple mechanical film removal devices often have shortcomings in terms of film removal angle and force control, and also cannot meet the requirements of high-precision film removal. Utility Model Content

[0004] The purpose of this invention is to provide a pre-alignment machine for display screen assembly, which can efficiently and accurately remove the surface protective film of the liquid crystal module, and complete the alignment and pressing of the processed liquid crystal module with the glass cover plate, thereby improving the bonding accuracy and production efficiency.

[0005] One technical solution disclosed in this utility model is:

[0006] A pre-alignment machine for display assembly, comprising a frame, wherein at least one gantry is provided in the middle region of the frame, and further comprising:

[0007] A worktable is located below the gantry frame, and the worktable can move along the X-axis.

[0008] A liquid crystal module loading device is located near one end of the worktable. The liquid crystal module loading device moves the liquid crystal module to the worktable along the first Y-axis direction.

[0009] The feeding device is located on one side of the gantry frame and is arranged opposite to the LCD module feeding device along the Y-axis direction, including a material conveying mechanism for supplying adhesive tape;

[0010] A transfer device is installed on the gantry frame. A robotic arm is installed at the end of the transfer device. The robotic arm grabs the adhesive paper onto the surface of the liquid crystal module and peels the film off the liquid crystal module at a predetermined angle.

[0011] The glass cover plate feeding device is located on the other side of the gantry frame and is arranged parallel and spaced apart from the liquid crystal module feeding device. The glass cover plate feeding device moves the glass cover plate to the top of the liquid crystal module after the film is removed along the second Y-axis direction.

[0012] A pressing device is installed on the gantry frame and is adjacent to the transfer device along the X-axis. The end of the pressing device is provided with a pressing component for bonding the liquid crystal module to the glass cover plate.

[0013] A first camera module is located at the other end of the workbench, with its lens facing the area where the LCD module and the glass cover are attached on the workbench.

[0014] Optionally, the workbench includes a first workbench and a second workbench arranged side by side. The first workbench and the second workbench move in a transverse plane via linear slide rails. The bottom of the first workbench is provided with a lifting cylinder. The second workbench repeats the same process after the first workbench completes the process.

[0015] Optionally, the liquid crystal module feeding device includes:

[0016] A first frame spanning the platform;

[0017] The first Y-axis linear module is fixed on the first frame beam;

[0018] The first X-axis linear module is slidably connected to the first Y-axis linear module;

[0019] A first Z-axis linear module is disposed at the end of the first X-axis linear module, and a rotation adjustment platform is connected to the output end of the first Z-axis linear module.

[0020] The adsorption assembly, fixed to the bottom of the rotating adjustment platform, includes a flexible suction cup with vacuum suction holes.

[0021] Optionally, the feeding device includes a material strip with several adhesive strips attached at intervals, a waste bin, and a conveying mechanism. The waste bin is equipped with a first sensor to detect whether there is waste on the robotic arm. The waste bin is used to collect the waste generated after the robotic arm tears the film.

[0022] The conveying mechanism includes a feeding pulley, a take-up pulley, a roller, a feeding cylinder, a pressing column, a second sensor, a stepper motor, and several guide columns. The feeding pulley is located above the take-up pulley. The stepper motor drives the feeding pulley and the take-up pulley to rotate synchronously. The material belt and several guide columns are disposed between the feeding pulley and the take-up pulley. The feeding cylinder drives the roller to rotate. The pressing column squeezes the material belt so that the roller drives the material belt. The second sensor is used to sense the tension of the material belt.

[0023] Optionally, the transfer device includes:

[0024] The second frame spans across the platform;

[0025] The second Y-axis linear module is fixed on the second frame;

[0026] The second Z-axis linear module is slidably connected to the second Y-axis linear module;

[0027] The robotic arm is slidably connected to the end of the second Z-axis linear module. The robotic arm includes a rotary cylinder, a gripping part, and a film-tearing part fixed to the side of the gripping part. The rotary cylinder drives the gripping part to rotate.

[0028] Optionally, the film-tearing part is provided with a roller, and the roller is bonded to the adhesive paper gripped by the clamping part.

[0029] Optionally, the glass cover plate loading device is provided with a positioning structure and a transverse slide rail. The contact surface between the positioning structure and the glass cover plate is provided with a corresponding clamping member. The positioning structure is located above the transverse slide rail, and the transverse slide rail moves along the second Y-axis direction.

[0030] Optionally, the pressing device includes:

[0031] The third frame spans across the platform;

[0032] The third Y-axis linear module is fixed on the third frame;

[0033] The second X-axis linear module is slidably connected to the third Y-axis linear module;

[0034] The third Z-axis linear module is slidably connected to the second X-axis linear module, and the output end of the first Z-axis linear module is connected to the pressing component.

[0035] Optionally, it also includes a second imaging module located below the glass cover plate loading path. The second imaging module is slidably mounted on a linear guide rail. The second imaging module and the first imaging module have the same lens configuration. The first imaging module includes a bracket mounted on the platform, a CCD camera lens, and a ring light source disposed around the CCD camera lens. The CCD camera lens slides on the crossbeam of the bracket via a linear guide rail.

[0036] Optionally, it also includes an ion air bar disposed below the crossbeam of the pressing device, the air outlet of the ion air bar being directed toward the movement trajectory of the pressing component.

[0037] This utility model discloses a pre-alignment machine for display screen assembly. Through the coordinated work of various devices, it automates a series of processes, from feeding the LCD module and glass cover plate, supplying and peeling the adhesive tape, to pressing the LCD module and glass cover plate together. This reduces manual intervention, improves production efficiency, lowers labor costs, and avoids errors that may be caused by human operation. The worktable moves along the X-axis, the LCD module feeding device moves the LCD module to the worktable along the first Y-axis, and the glass cover plate feeding device moves the glass cover plate above the peeled LCD module along the second Y-axis. By using different feeding and processing paths, interference between different processes is avoided, improving production efficiency. The robotic arm at the end of the transfer device can grasp the adhesive tape and peel the LCD module at a predetermined angle, ensuring the stability and reliability of the peeling process. This avoids problems such as incomplete peeling or damage to the LCD module surface affecting the subsequent bonding quality, effectively improving the product yield. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the overall structure of the pre-alignment machine for display screen assembly according to this utility model;

[0039] Figure 2 This is a schematic diagram of the worktable structure in one embodiment of the pre-alignment machine for display screen assembly according to this utility model;

[0040] Figure 3 This is a schematic diagram of the structure of the liquid crystal module feeding device in one embodiment of the pre-alignment machine for display screen assembly according to this utility model;

[0041] Figure 4 This is a schematic diagram of the feeding device in one embodiment of the pre-alignment machine for display screen assembly according to this utility model;

[0042] Figure 5 This is a schematic diagram of the transfer device and ion air bar in one embodiment of the pre-alignment machine for display screen assembly according to this utility model;

[0043] Figure 6 This is a schematic diagram of the structure of the robotic arm in one embodiment of the pre-alignment machine for display screen assembly according to this utility model;

[0044] Figure 7 This is a schematic diagram of the glass cover plate loading device in one embodiment of the pre-alignment machine for display screen assembly according to this utility model;

[0045] Figure 8 This is a schematic diagram of the pressing device in one embodiment of the pre-alignment machine for display screen assembly according to this utility model;

[0046] Figure 9 This is a schematic diagram of the structure of the first photographing module in one embodiment of the pre-alignment machine for display screen assembly of this utility model;

[0047] Figure 10 This is a schematic diagram of the structure of the second photographing module in one embodiment of the pre-alignment machine for display screen assembly of this utility model. Detailed Implementation

[0048] The solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0049] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0050] It should also be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.

[0051] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0052] like Figure 1 , Figure 4 , Figure 5 and Figure 8 As shown, this utility model proposes a pre-alignment machine for display screen assembly, including a platform 1, wherein at least one gantry frame is provided in the middle area of ​​the platform 1, and further comprising:

[0053] Worktable 2 is located below the gantry frame, and worktable 2 can move along the X-axis direction;

[0054] The LCD module loading device 3 is located near one end of the worktable 2. The LCD module loading device 3 moves the LCD module to the worktable 2 along the first Y-axis direction.

[0055] The feeding device is located on one side of the gantry frame and is arranged opposite to the LCD module feeding device along the Y-axis direction, including a material conveying mechanism 43 for supplying adhesive tape 41;

[0056] The glass cover plate feeding device is located on the other side of the gantry frame and is arranged parallel and spaced apart from the liquid crystal module feeding device. The glass cover plate feeding device moves the glass cover plate to the top of the liquid crystal module after the film is removed along the second Y-axis direction.

[0057] A transfer device 5 is installed on the gantry frame. A robotic arm 54 is installed at the end of the transfer device 5. The robotic arm 54 grabs the adhesive tape 41 onto the liquid crystal module and peels the film off the liquid crystal module at a predetermined angle.

[0058] The glass cover plate feeding device 6 is located on the other side of the gantry frame and is arranged parallel to and spaced apart from the glass cover plate feeding device 6. The glass cover plate feeding device 6 moves the glass cover plate to the top of the liquid crystal module after the film is peeled off along the second Y-axis direction.

[0059] A pressing device 7 is mounted on the gantry frame and is adjacent to the transfer device 5 along the X-axis. The end of the pressing device 7 is provided with a pressing component 75 for bonding the liquid crystal module to the glass cover plate.

[0060] A first camera module is located at the other end of the workbench 2, with the lens of the first camera module facing the area where the liquid crystal module and the glass cover are attached on the workbench.

[0061] In this embodiment, the pre-alignment machine for display screen assembly includes a liquid crystal module loading device 3, a feeding device 4, a transfer device 5, a glass cover plate loading device 6, a pressing device 7, and a first imaging module 8, all mounted on a frame 1. The frame 1 serves as the basic support structure for the equipment, and the worktable 2 on it moves along the X-axis to a preset initial position for liquid crystal module loading. The liquid crystal module loading device 3 moves along the first Y-axis, grabs the liquid crystal module, and transfers it to the positioned worktable 2. The material conveying mechanism of the feeding device 4 starts operating, conveying the material tape with adhesive tape to a designated position that the transfer device's robotic arm can grasp, preparing for subsequent... The film-peeling operation provides materials; the robotic arm 54 at the end of the transfer device 5 moves to the adhesive paper gripping position, grips the adhesive paper 41 delivered by the feeding device, and then places the adhesive paper 41 on the surface of the liquid crystal module on the worktable 2. Then the robotic arm 54 performs the film-peeling action at a preset angle to completely remove the protective film from the surface of the liquid crystal module; the glass cover plate loading device 6 moves along the second Y-axis direction to move the glass cover plate to the designated position directly above the liquid crystal module that has completed the film-peeling operation, completing the loading of the glass cover plate; the first imaging module 8 located adjacent to the pressing device 7 is activated, and its lens is aimed at the bonding area between the liquid crystal module and the glass cover plate on the worktable to take pictures.

[0062] Among them, such as Figure 2 As shown, the workbench 2 includes a first workbench 21 and a second workbench 22 arranged side by side. The first workbench 21 and the second workbench 22 can move in the horizontal plane via linear slide rails 23, that is, they can move in the Y-axis and X-axis directions. The bottom of the first workbench 21 is equipped with a lifting cylinder 24 for adjusting the height of the first workbench 21 to adapt to different production needs. After the first workbench 21 completes a process, the second workbench 22 repeats the same process, realizing alternating operation of the two workstations to improve production efficiency. For example, when the liquid crystal module on the first workbench 21 completes processes such as film peeling and bonding, the first workbench 21 moves to a designated position for unloading, while the second workbench 22 moves to the loading position to receive new liquid crystal modules and start a new process, thereby reducing waiting time and improving overall production efficiency.

[0063] In some embodiments, such as Figure 3As shown, the LCD module loading device 3 includes a first frame 31 spanning across the platform 1. A first Y-axis linear module 32 is fixed on the crossbeam of the first frame 31. A first X-axis linear module 33 is slidably connected to the first Y-axis linear module 32. A first Z-axis linear module 34 is provided at the end of the first X-axis linear module 33. The output end of the first Z-axis linear module 34 is connected to a rotary adjustment platform 35. An adsorption component 36 is fixed at the bottom of the rotary adjustment platform 35. The adsorption component 36 includes a flexible suction cup 361 with vacuum suction holes. The flexible suction cup 361 can adapt to the surface shape of the LCD module to ensure the stability of adsorption. During operation, the first Y-axis linear module 32, the first X-axis linear module 33, and the first Z-axis linear module 34 move together to move the adsorption component 36 above the LCD module. The LCD module is adsorbed through the vacuum suction holes. Then, the angle of the LCD module is adjusted by the rotary adjustment platform 35. Finally, the LCD module is transferred to the worktable 2 along the first Y-axis direction. For example, when it is necessary to pick up the LCD module from the rack and place it on the first worktable 21, the LCD module loading device 3 first moves each linear module to align the flexible suction cup 361 with the LCD module, activates the vacuum suction of the LCD module, then adjusts the rotation adjustment platform 35 to make the position and angle of the LCD module meet the requirements, and finally places the LCD module in the designated position on the first worktable 21.

[0064] In some embodiments, such as Figure 4 As shown, the feeding device 4 includes a material belt 42 with several adhesive strips spaced apart, a waste bin 44, and a conveying mechanism 43. Adhesive strips 41 are spaced apart on the material belt 42, providing necessary materials for the film-tearing process. The waste bin 44 collects waste generated after the robotic arm 54 tears the film, maintaining a clean production environment and ensuring the normal operation of the robotic arm 54. The conveying mechanism 43 drives the material belt 42, accurately conveying the adhesive strips 41 to designated positions to ensure the smooth progress of the film-tearing process. A first sensor 441 is installed on the waste bin 44 to sense whether there is waste on the robotic arm 54. When the robotic arm 54 completes the film-tearing action and moves the waste to above the waste bin 44, the first sensor 441 detects the presence of waste, triggering the waste bin 44 to receive the waste in a timely manner, preventing waste accumulation from affecting subsequent processes.

[0065] In this embodiment, the conveying mechanism 43 includes a pulley 431 for releasing the belt, a pulley 432 for taking in the belt, a roller 433, a conveying cylinder 435, a guide column 437, a pressing column 438, a second sensor 434, and a stepper motor 436. The unwinding pulley 431 is used to wind and release the material belt 42, and the take-up pulley 432 is used to recycle the used material belt 42; the roller 433 rotates under the drive of the conveying cylinder 435, and drives the material belt 42 to move through friction; the guide column 437 is used to change the running direction of the material belt 42; the pressing column 438 squeezes the material belt 42 during the conveying process, increasing the friction between the material belt 42 and the roller 433, and preventing slippage while increasing friction; the second sensor 434 is used to monitor the tension of the material belt 42 in real time, ensuring that the tension of the material belt 42 is within a reasonable range, and avoiding the material belt 42 from running off track or being damaged due to excessively loose or tight tension; the stepper motor 436 drives the unwinding pulley 431 and the take-up pulley 432 to rotate synchronously, controlling the moving speed and position of the material belt 42.

[0066] The feeding device 4 includes a strip 42 with several adhesive strips 41 attached at intervals and a conveying mechanism 43. The conveying mechanism 43 includes a feeding roller 431, a roller 433, a conveying cylinder 435, a recovery roller 434, and a guide 435. The feeding roller 431 is wound with the strip 42. The guide 435 guides the movement of the strip 42. The conveying cylinder 435 drives the roller 433 to rotate, thereby moving the strip 42 on the feeding roller 431. The recovery roller 434 is used to recover the used strip 42. When it is necessary to grab an adhesive strip 41, the conveying mechanism 43 drives the roller 433 to rotate through the conveying cylinder 435, causing the strip 42 to move and move the next adhesive strip 41 to the designated grabbing position, waiting for the robotic arm 54 of the transfer device 5 to grab it. This achieves continuous supply of adhesive strips 41, ensures the continuity of the film-tearing process, and improves production efficiency.

[0067] In some embodiments, such as Figure 5 and Figure 6As shown, the transfer device 5 is mounted on the platform 1 and includes a second frame 51 spanning the platform 1. A second Y-axis linear module 52 is fixed on the second frame 51. A second Z-axis linear module 53 is slidably connected to the second Y-axis linear module 52. A robot arm 54 is slidably connected to the end of the second Z-axis linear module 53. The robot arm 54 includes a rotary cylinder 541, a gripping part 542, and a film-tearing part 543 fixed to the side of the gripping part 542. The rotary cylinder 541 drives the gripping part 542 to rotate. The film-tearing part 543 is provided with a roller 544, which adheres to the adhesive paper 41 gripped by the gripping part 542. During operation, the transfer device 5 moves the robot arm 54 to the adhesive tape 41 gripping position of the feeding device 4 via the movement of the second Y-axis linear module 52 and the second Z-axis linear module 53. The gripping part 542 grips the adhesive tape 41 and moves it above the liquid crystal module on the worktable 2, attaching the adhesive tape 41 to the protective film of the liquid crystal module. Then, the rotary cylinder 541 drives the gripping part 542 to rotate, causing the roller 544 of the film-tearing part 543 to tear the adhesive tape 41 at a predetermined angle, thereby removing the protective film from the surface of the liquid crystal module. For example, during the film-tearing process, a suitable film-tearing angle is set according to the material and adhesion of the liquid crystal module's protective film. The rotation angle of the gripping part 542 is controlled by the rotary cylinder 541, causing the roller 544 to tear the adhesive tape 41 at that angle, ensuring that the protective film can be completely and safely removed, avoiding damage to the surface of the liquid crystal module.

[0068] The pre-alignment machine for display assembly also includes an ion air bar 10 located below the second frame 51 on the transfer device 5, with the air outlet of the ion air bar 10 facing the movement trajectory of the robotic arm 54. During the film peeling process, the ion airflow generated by the ion air bar 10 can eliminate static electricity on the surface of the liquid crystal module, preventing static electricity from attracting dust and other impurities, which would affect the bonding quality.

[0069] In some embodiments, such as Figure 7 As shown, the glass cover plate loading device 6 is mounted on the frame 1, parallel and spaced apart from the liquid crystal module loading device 3, and is used to transfer the glass cover plate to the top of the liquid crystal module after the film has been removed. The glass cover plate loading device 6 is equipped with a positioning structure 61 and a transverse slide rail 62. The contact surface between the positioning structure 61 and the glass cover plate is provided with a corresponding clamping member 63. The positioning structure 61 is positioned above the transverse slide rail 62, which moves along the second Y-axis. During operation, the glass cover plate is placed on the positioning structure 61, and the clamping member 63 engages with the edge or specific part of the glass cover plate to ensure accurate positioning. Then, the transverse slide rail 62 moves along the Y-axis, transferring the glass cover plate on the positioning structure 61 to the designated position above the liquid crystal module after the film has been removed, awaiting bonding by the pressing device 7. This design of the positioning structure 61 and the transverse slide rail 62 ensures that the glass cover plate is accurately transferred to the top of the liquid crystal module, improving alignment accuracy.

[0070] In some embodiments, such as Figure 8 As shown, the pressing device 7 is mounted on the platform 1, including a third frame 71 spanning the platform 1. A third Y-axis linear module 72 is fixed on the third frame 71. A second X-axis linear module 73 is slidably connected to the third Y-axis linear module 72. A third Z-axis linear module 74 is slidably connected to the second X-axis linear module 73. The output end of the third Z-axis linear module 74 is connected to a pressing component 75. During operation, the pressing device 7 moves the pressing component 75 above the bonding area of ​​the liquid crystal module and the glass cover after the film is peeled off through the coordinated movement of the third Y-axis linear module 72, the second X-axis linear module 73, and the third Z-axis linear module 74. Then, the pressing component 75 moves downward to perform the bonding operation between the liquid crystal module and the glass cover.

[0071] The pressing component 75 can be selected in different shapes and materials according to different bonding requirements. For example, it can be a flexible pressing head to ensure that the pressure applied during the bonding process is uniform and to avoid defects such as air bubbles.

[0072] In some embodiments, such as Figure 9 and Figure 10 As shown, the pre-alignment machine for display assembly also includes a second imaging module 9. The second imaging module 9 is located below the glass cover plate loading path and is mounted on a linear guide rail 91 using a sliding installation method. The position of the second imaging module 9 can be flexibly adjusted to accommodate glass cover plates of different sizes and loading positions, ensuring accurate capture of the position and orientation information of the glass cover plate during loading. The second imaging module 9 has the same lens configuration as the first imaging module 8. The first imaging module 8 includes a bracket 82, a CCD camera lens 81, and a ring light source 83. The CCD camera lens 81 is mounted on the bracket 82 on the platform 1, and a ring light source 83 is provided around the lens. The lens can slide on the crossbeam of the bracket 82 via a linear slide rail 84. The bracket 82 of the first camera module 8 provides stable support and installation foundation. Its crossbeam supports the sliding of the CCD camera lens 81 through the linear slide rail 84, which makes it convenient to adjust the shooting angle and position according to the actual working scene. The ring light source 83 can form uniform illumination on the surface of the liquid crystal module, reduce shadow and reflection interference, improve the clarity of the picture, ensure the acquisition of high-quality images, and provide reliable data for subsequent image processing.

[0073] The workflow of this utility model is as follows: The workbench 2 moves to the initial position, and the liquid crystal module loading device 3 picks up the liquid crystal module and places it on the workbench 2; the feeding device 4 conveys the adhesive tape 41 to the gripping position of the transfer device 5 robotic arm 54; the transfer device 5 robotic arm 54 picks up the adhesive tape 41 and sticks it to the liquid crystal module, and then peels off the film at a predetermined angle, while the ion air bar 10 eliminates static electricity; the glass cover loading device 6 moves the glass cover plate to the top of the liquid crystal module after the film has been peeled off; the second imaging module 9 and the first imaging module 8 take pictures of the glass cover plate and the liquid crystal module respectively to obtain information, calculate the positional deviation, and feed it back to each device for adjustment; finally, the pressing device 7 moves the pressing part 75 to the appropriate position and completes the bonding.

[0074] In summary, this utility model provides a pre-alignment machine for display screen assembly. The robotic arm of the transfer device can precisely grasp the adhesive tape and peel the film off the LCD module at a predetermined angle, avoiding damage to the LCD module surface. The dual-worktable design enables alternating operation of different platforms at different processes, improving production efficiency and reducing waiting time. Each feeding device adopts a linear module and positioning structure to ensure that the LCD module and glass cover can be accurately transferred to the designated position. Combined with the positioning of the imaging device, the alignment accuracy is improved, thus ensuring bonding quality. The feeding device can continuously supply adhesive tape, ensuring the continuity of the film peeling process. The ionizer bar eliminates static electricity, improving the stability of the bonding process.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A pre-alignment machine for display screen assembly, comprising a platform, wherein at least one gantry is disposed in the middle region of the platform, characterized in that, Also includes: A worktable is located below the gantry frame, and the worktable can move along the X-axis. A liquid crystal module loading device is located near one end of the worktable. The liquid crystal module loading device moves the liquid crystal module to the worktable along the first Y-axis direction. The feeding device is located on one side of the gantry frame and is arranged opposite to the LCD module feeding device along the Y-axis direction, including a material conveying mechanism for supplying adhesive tape; A transfer device is installed on the gantry frame. A robotic arm is installed at the end of the transfer device. The robotic arm grabs the adhesive paper onto the surface of the liquid crystal module and peels the film off the liquid crystal module at a predetermined angle. The glass cover plate feeding device is located on the other side of the gantry frame and is arranged parallel and spaced apart from the liquid crystal module feeding device. The glass cover plate feeding device moves the glass cover plate to the top of the liquid crystal module after the film is removed along the second Y-axis direction. A pressing device is installed on the gantry frame and is adjacent to the transfer device along the X-axis. The end of the pressing device is provided with a pressing component for bonding the liquid crystal module to the glass cover plate. A first camera module is located at the other end of the workbench, with its lens facing the area where the LCD module and the glass cover are attached on the workbench.

2. The pre-alignment machine for display screen assembly according to claim 1, characterized in that, The workbench includes a first workbench and a second workbench arranged side by side. The first workbench and the second workbench move in a horizontal plane via linear slide rails. The bottom of the first workbench is equipped with a lifting cylinder. The second workbench repeats the same process after the first workbench completes the process.

3. The pre-alignment machine for display screen assembly according to claim 1, characterized in that, The liquid crystal module feeding device includes: A first frame spanning the platform; The first Y-axis linear module is fixed on the first frame beam; The first X-axis linear module is slidably connected to the first Y-axis linear module; A first Z-axis linear module is disposed at the end of the first X-axis linear module, and a rotation adjustment platform is connected to the output end of the first Z-axis linear module. The adsorption assembly, fixed to the bottom of the rotating adjustment platform, includes a flexible suction cup with vacuum suction holes.

4. The pre-alignment machine for display screen assembly according to claim 1, characterized in that, The feeding device includes a material strip with several adhesive strips attached at intervals, a waste bin, and a conveying mechanism. The waste bin is equipped with a first sensor to detect whether there is waste on the robotic arm. The waste bin is used to collect the waste generated after the robotic arm tears the film. The conveying mechanism includes a feeding pulley, a take-up pulley, a roller, a feeding cylinder, a pressing column, a second sensor, a stepper motor, and several guide columns. The feeding pulley is located above the take-up pulley. The stepper motor drives the feeding pulley and the take-up pulley to rotate synchronously. The material belt and several guide columns are disposed between the feeding pulley and the take-up pulley. The feeding cylinder drives the roller to rotate. The pressing column squeezes the material belt so that the roller drives the material belt. The second sensor is used to sense the tension of the material belt.

5. The pre-alignment machine for display screen assembly according to claim 1, characterized in that, The transfer device includes: The second frame spans across the platform; The second Y-axis linear module is fixed on the second frame; The second Z-axis linear module is slidably connected to the second Y-axis linear module; The robotic arm is slidably connected to the end of the second Z-axis linear module. The robotic arm includes a rotary cylinder, a gripping part, and a film-tearing part fixed to the side of the gripping part. The rotary cylinder drives the gripping part to rotate.

6. The pre-alignment machine for display screen assembly according to claim 5, characterized in that, The film-tearing section is equipped with a roller, which adheres to the adhesive paper gripped by the clamping section.

7. The pre-alignment machine for display screen assembly according to claim 1, characterized in that, The glass cover plate loading device is equipped with a positioning structure and a transverse slide rail. The contact surface between the positioning structure and the glass cover plate is provided with a corresponding clamping element. The positioning structure is located above the transverse slide rail, which moves along the second Y-axis direction.

8. The pre-alignment machine for display screen assembly according to claim 1, characterized in that, The pressing device includes: The third frame spans across the platform; The third Y-axis linear module is fixed on the third frame; The second X-axis linear module is slidably connected to the third Y-axis linear module; The third Z-axis linear module is slidably connected to the second X-axis linear module, and the output end of the third Z-axis linear module is connected to the pressing component.

9. The pre-alignment machine for display screen assembly according to claim 1, characterized in that, It also includes a second imaging module located below the glass cover plate loading path. The second imaging module is slidably mounted on a linear guide rail. The second imaging module and the first imaging module have the same lens configuration. The first imaging module includes a bracket mounted on the platform, a CCD camera lens, and a ring light source disposed around the CCD camera lens. The CCD camera lens slides on the crossbeam of the bracket via a linear guide rail.

10. The pre-alignment machine for display screen assembly according to claim 1, characterized in that, It also includes an ion air bar located below the crossbeam of the pressing device, the air outlet of the ion air bar moving toward the pressing component.

Images