Filling and sealing tool for large-size frameless liquid crystal screen

Abstract

The utility model provides a potting tool for a large-size borderless liquid crystal screen, which relates to the technical field of screen potting, and comprises a potting machine, two turnover modules are symmetrically arranged below the potting machine, the two turnover modules are respectively positioned on the left side and the right side of the potting machine, each turnover module comprises a turnover mechanism, and the turnover mechanisms are respectively positioned on the left side and the right side of the potting machine. And a clamping mechanism is arranged at the output end of the turnover mechanism. According to the frame-free liquid crystal display, the glue is placed upside down, namely the screen body is arranged on the upper portion and the optical filter is arranged on the lower portion, the deformation quantity of the screen body caused by the gravity of the glue is effectively reduced, the problem that a glass base material is prone to deformation to generate stress spots when the large-size frame-free liquid crystal display is bonded is solved, and the first-pass yield of products is improved to 100%. Parts such as the turnover mechanism, the linear module and the clamping mechanism in the potting tool work cooperatively, so that operations such as automatic clamping, turnover, potting and positioning of the screen assembly are realized, and the production efficiency and the operation accuracy are improved.

Description

TECHNICAL FIELD

[0001] The utility model mainly relates to screen glue filling technical field, concretely relates to a large size frameless liquid crystal screen's potting frock. BACKGROUND

[0002] In the modern information display field, large size frameless liquid crystal screen is widely used in various high-end display devices due to its excellent visual effect and broad application prospect. In these application scenarios, the display quality and stability of the liquid crystal screen are extremely high. The manufacturing process of large size frameless liquid crystal screen faces many challenges, and the bonding process is one of the key links affecting product quality. In the early stage, the traditional liquid crystal screen bonding process mostly adopts a simple bonding method, which is applicable when the size of the liquid crystal screen is small. However, as the size of the liquid crystal screen continues to increase, especially in the manufacturing of large size frameless liquid crystal screens of 46 inches and above, the original process method exposes serious problems.

[0003] In the early stage of process design, the original screen with iron shell is bonded as a whole, and the original screen frame is embedded in the self-made structure screen frame. The filter is directly bonded to the screen frame. However, due to the large weight of the large size liquid crystal screen, the gravity of the glue will cause the screen to deform significantly during the glue bonding process, resulting in the screen sinking downward. This deformation causes the center position of the screen and the film to have a serious black field white spot phenomenon due to abnormal contact. The black field white spot problem seriously affects the display effect of the liquid crystal screen, reduces the product qualification rate and reliability, and increases the production cost and production cycle.

[0004] The existing large size liquid crystal screen bonding process and equipment cannot meet the strict requirements of modern manufacturing industry on product quality, production efficiency and stability. Therefore, an innovative process scheme and special tooling are urgently needed to solve the black field white spot problem caused by glue gravity deformation during the bonding of large size frameless liquid crystal screens, improve the first-time qualification rate of products, and meet the growing market demand. UTILITY MODEL CONTENTS

[0005] 1. The technical problem to be solved by the utility model:

[0006] The utility model provides a large size frameless liquid crystal screen's potting frock to solve the technical problems in the above background technology.

[0007] 2. Technical scheme:

[0008] In order to achieve the above object, the utility model provides technical scheme for a kind of large size frameless liquid crystal screen's potting tool, including glue filling machine, two turnover modules are symmetrically arranged in the lower portion of glue filling machine, two turnover modules are respectively located in the left and right sides of glue filling machine, the turnover module includes turnover mechanism, clamping mechanism is arranged on the output end of turnover mechanism, the turnover module is used to clamp and fix screen assembly and overturn screen assembly.

[0009] Preferably, the lower end of the turnover mechanism is fixed on the output end of the linear module, and the linear module drives the turnover module and the screen assembly to approach or move away from the glue filling machine.

[0010] Preferably, the screen assembly includes a screen body and a filter, a glue filling cavity is formed between the screen body and the filter, a glue filling port is arranged above the glue filling cavity, and discharge ports are arranged on both sides of the glue filling cavity for discharging air and excess glue.

[0011] Preferably, the turnover mechanism includes a mounting bracket, a lifting cylinder is arranged on the upper end of the mounting bracket, a lifting block is arranged on the output end of the lifting cylinder, a guide rod is further arranged on the mounting bracket, the guide rod is vertically arranged, a guide hole is formed in the lifting block, the lifting block is slidably sleeved on the guide rod through the guide hole, a rotary cylinder is fixedly installed on the lifting block, and the clamping mechanism is fixed on the output end of the rotary cylinder.

[0012] Preferably, the clamping mechanism includes a mounting box, the mounting box is fixed on the output end of the rotary cylinder, a clamping cylinder is arranged in the mounting box, a piston rod of the clamping cylinder extends out of the mounting box and is fixedly connected with a mounting block, an anti-collision pad is arranged on one end of the mounting block close to the screen assembly, a guide shaft is fixedly installed on the other end of the mounting block, a guide cylinder is arranged on the mounting box, and the guide shaft is slidably installed in the guide cylinder.

[0013] 3. Beneficial effects:

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model discloses a potting method, which seals the filter and the screen body around to form a glue filling cavity, only leaves a glue filling port and a discharge port, realizes dirty point control and specified position discharge of excess glue, and guarantees glue filling quality.

[0016] The utility model discloses a potting method, which seals the filter and the screen body around to form a glue filling cavity, only leaves a glue filling port and a discharge port, realizes dirty point control and specified position discharge of excess glue, and guarantees glue filling quality.

[0017] The overturning mechanism, the linear module, the clamping mechanism and the like in the pouring and sealing tool of the utility model work in coordination, realize automatic clamping, overturning, pouring and positioning and the like of the screen assembly, and improve production efficiency and operation accuracy.

[0018] The cooperation of the lifting air cylinder and the guide rod and the guide hole in the overturning mechanism guarantees the stability of lifting; the design of the guide shaft and the guide cylinder in the clamping mechanism makes the clamping process more stable, and the anti-collision pad can also protect the screen assembly from damage. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a whole structure schematic view of the utility model;

[0020] Figure 2 It is a whole structure schematic view of the utility model from another angle;

[0021] Figure 3 It is an overturning module structure schematic view of the utility model;

[0022] Figure 4 It is an overturning module structure schematic view of the utility model from one side;

[0023] Figure 5 It is a clamping mechanism structure schematic view of the utility model;

[0024] Figure 6 It is an overturning mechanism structure schematic view of the utility model;

[0025] Figure 7 It is a screen assembly overhead schematic view of the utility model;

[0026] Figure 8 It is a screen assembly rear view schematic view of the utility model.

[0027] REFERENCE SIGNS:

[0028] 1, overturning mechanism; 11, mounting frame; 12, lifting air cylinder; 13, lifting block; 14, rotary air cylinder; 15, guide rod; 16, guide hole; 2, clamping mechanism; 21, mounting box; 22, clamping air cylinder; 23, mounting block; 24, anti-collision pad; 25, guide shaft; 26, guide cylinder; 3, screen assembly; 31, screen body; 32, optical filter; 33, pouring cavity; 34, pouring port; 35, discharge port; 4, pouring machine; 5, linear module. DETAILED DESCRIPTION

[0029] For the convenience of understanding the utility model, the utility model will be described more fully below with reference to the relevant drawings, the drawings give several embodiments of the utility model, however, the utility model can be realized in many different forms, and is not limited to the embodiments described herein, on the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0030] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0031] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0032] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing", "provided with" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0033] It should be noted that the structure not introduced in the utility model does not involve the design points and improvement direction of the utility model, and is the same as the prior art or can be realized by using the prior art, which is not described here. Embodiment

[0034] Referring to the drawings Figures 1-8The utility model provides a kind of large size frameless liquid crystal screen's potting tool, including glue filling machine 4, two turnover modules are symmetrically arranged below glue filling machine 4, two turnover modules are located glue filling machine 4's left and right sides respectively, and turnover module includes turnover mechanism 1, clamping mechanism 2 is arranged on the output end of turnover mechanism 1, and turnover module is used to clamp and fix screen assembly 3 and overturn screen assembly 3.

[0035] Screen assembly 3 includes screen body 31 and filter 32, and glue filling cavity 33 is formed between screen body 31 and filter 32, glue filling port 34 is arranged above glue filling cavity 33, and discharge port 35 is arranged on the both sides of glue filling cavity 33, and discharge port 35 is used to discharge air and excess glue.

[0036] Turnover mechanism 1 includes mounting frame 11, lifting cylinder 12 is arranged on the upper end of mounting frame 11, lifting block 13 is arranged on the output end of lifting cylinder 12, guide rod 15 is further arranged on mounting frame 11, guide rod 15 is vertically arranged, guide hole 16 is formed in lifting block 13, lifting block 13 is slidably sleeved on guide rod 15 through guide hole 16, rotating cylinder 14 is fixedly installed on lifting block 13, and clamping mechanism 2 is fixed on the output end of rotating cylinder 14.

[0037] Clamping mechanism 2 includes mounting box 21, mounting box 21 is fixed on the output end of rotating cylinder 14, clamping cylinder 22 is arranged in mounting box 21, the piston rod of clamping cylinder 22 is arranged out of mounting box 21 and is fixedly connected with mounting block 23, anti-collision pad 24 is arranged on the end of mounting block 23 close to screen assembly 3, guide shaft 25 is fixedly installed on the other end of mounting block 23, guide cylinder 26 is arranged on mounting box 21, and guide shaft 25 is slidably installed in guide cylinder 26.

[0038] Working principle:

[0039] Before actual production operation, technical personnel first assembles screen body 31 and filter 32, forms a closed glue filling cavity 33, simultaneously, according to design requirement, accurately sets glue filling port 34 on the top of glue filling cavity 33, and sets discharge port 35 on the both sides.

[0040] Linear module 5 starts to work, it drives turnover module installed on its output end to move along a specific trajectory according to preset program or instruction.In this process, linear module 5 accurately moves turnover module to the corresponding position of screen assembly 3 through accurate displacement control, so that clamping mechanism 2 can be aligned with screen assembly 3 smoothly, and prepare for subsequent clamping action.

[0041] When the turnover module moves to the appropriate position, the lifting cylinder 12 receives the start signal and starts to extend the piston rod. With the extension of the piston rod, the lifting block 13 is pushed by the piston rod and moves upward along the vertically arranged guide rod 15. The cooperation of the guide rod 15 and the guide hole 16 plays an accurate guiding role, ensuring that the lifting block 13 can only smoothly rise in the vertical direction, avoiding shaking or deviation during the rising process, and ensuring the accuracy and stability of the movement.

[0042] When the lifting block 13 rises to the predetermined clamping position of the rotating cylinder 14 and the clamping mechanism 2 to the screen assembly 3, the clamping cylinder 22 starts to work. The piston rod of the clamping cylinder 22 extends out of the mounting box 21 and pushes the mounting block 23 fixedly connected thereto. In this process, the guide shaft 25 at one end of the mounting block 23 slides left and right in the guide cylinder 26 on the mounting box 21, which further ensures the stability and accuracy of the movement of the mounting block 23.

[0043] With the movement of the mounting block 23, the anti-collision pad 24 near the end of the screen assembly 3 gradually approaches and finally contacts the screen assembly 3. The role of the anti-collision pad 24 is to avoid direct hard contact between the mounting block 23 and the screen assembly 3 during clamping, to prevent damage to the screen assembly 3, and to play a buffering and protection role. When the anti-collision pad 24 closely adheres to the screen assembly 3, the clamping cylinder 22 continues to apply a certain pressure to ensure that the screen assembly 3 is firmly clamped in the clamping mechanism 2.

[0044] After the screen assembly 3 is successfully clamped, the linear module 5 is started again. This time, the linear module 5 drives the turnover module and the clamped screen assembly 3 to approach the direction of the glue filling machine 4. During the approach, the linear module 5 accurately controls the glue filling port 34 of the screen assembly 3 to accurately align with the glue outlet of the glue filling machine 4.

[0045] When the glue filling port 34 is accurately connected with the glue outlet, the glue filling machine 4 starts to fill glue into the glue filling cavity 33 through the glue filling port 34 according to the pre-set glue amount parameter. During the glue filling process, the glue filling machine 4 accurately controls the flow and pressure of the glue to ensure that the glue can flow uniformly and stably into the glue filling cavity 33, avoiding the accumulation or insufficient filling of the glue.

[0046] When the glue filling machine 4 completes the filling of the theoretical value of the glue amount into the glue filling cavity 33, the rotating cylinder 14 receives the turnover instruction and starts to work. The output end of the rotating cylinder 14 drives the clamping mechanism 2 and the clamped screen assembly 3 to rotate, and during the rotation, the position of the screen assembly 3 gradually changes, finally realizing the state that the screen body 31 is on the top and the optical filter 32 is on the bottom.

[0047] After the flip is completed, keep this state for static. During the static, due to the flowability of the glue, the glue flows to fill the entire glue filling cavity 33 under the action of gravity, filling all the gaps between the screen body 31 and the filter 32. At the same time, the excess glue and the air mixed during the glue filling process will be naturally discharged from the discharge port 35. This process effectively solves the problem of downward deformation of the screen body 31 caused by the gravity of the glue, and also ensures the uniformity and integrity of the glue filling, avoiding the generation of defects such as black field white spots.

[0048] After a period of static, the glue is fully cured, and the screen assembly 3 completes the glue filling and bonding process. At this time, the screen assembly 3 has achieved the expected bonding effect.

[0049] Next, the clamping cylinder 22 receives the release instruction, and the piston rod begins to retract. With the retraction of the piston rod, the mounting block 23 moves away from the screen assembly 3 under the cooperation of the guide shaft 25 and the guide cylinder 26, so that the anti-collision pad 24 is separated from the screen assembly 3, thereby releasing the clamping of the screen assembly 3. The technician can take out the glued screen assembly 3 from the clamping mechanism 2, complete the entire glue filling process, and enter the subsequent detection or assembly link.

[0050] The above-described embodiments only express certain embodiments of the present application, and the description is more specific and detailed, but it should not be understood as limiting the scope of the present application. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A potting fixture for a large-size frameless LCD screen, characterized in that: The application relates to a screen assembly fixing and overturning device, which comprises a glue filling machine (4), two overturning modules symmetrically arranged below the glue filling machine (4), a clamping mechanism (2) arranged on the output end of an overturning mechanism (1), and a screen assembly (3).

2. The filling device for large-size liquid crystal display panel without frame according to claim 1, wherein: The lower end of the overturning mechanism (1) is fixed on the output end of a linear module (5), the linear module (5) drives the overturning module and the screen assembly (3) to approach or move away from the glue filling machine (4).

3. The filling device for large-size liquid crystal display panel without frame according to claim 2, wherein: The screen assembly (3) comprises a screen body (31) and a filter (32), a glue filling cavity (33) is formed between the screen body (31) and the filter (32), a glue filling opening (34) is arranged above the glue filling cavity (33), and discharge openings (35) are arranged on the two sides of the glue filling cavity (33) and used for discharging air and excess glue.

4. The filling device for large-size liquid crystal display panel without frame according to claim 3, wherein: The overturning mechanism (1) comprises a mounting frame (11), a lifting cylinder (12) is arranged on the upper end of the mounting frame (11), a lifting block (13) is arranged on the output end of the lifting cylinder (12), a guide rod (15) is further arranged on the mounting frame (11), the guide rod (15) is vertically arranged, a guide hole (16) is formed in the lifting block (13), the lifting block (13) is slidably sleeved on the guide rod (15) through the guide hole (16), a rotating cylinder (14) is fixedly installed on the lifting block (13), and the clamping mechanism (2) is fixed on the output end of the rotating cylinder (14).

5. The filling device for large-size liquid crystal display panel without frame according to claim 4, wherein: The clamping mechanism (2) comprises a mounting box (21), the mounting box (21) is fixed on the output end of the rotating cylinder (14), a clamping cylinder (22) is arranged in the mounting box (21), the piston rod of the clamping cylinder (22) extends out of the mounting box (21) and is fixedly connected with a mounting block (23), an anti-collision pad (24) is arranged on the end of the mounting block (23) close to the screen assembly (3), a guide shaft (25) is fixedly installed on the other end of the mounting block (23), a guide cylinder (26) is arranged on the mounting box (21), and the guide shaft (25) is slidably installed in the guide cylinder (26).

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