A cleaning structure of anti-static glass substrate for liquid crystal display production
The antistatic glass substrate cleaning structure, with its adaptive adjustment components and electrostatic discharge design, solves the problems of uneven cleaning pressure and electrostatic adsorption, achieving efficient cleaning of glass substrates and preventing secondary contamination, thus improving the stability and adaptability of the cleaning effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINYU WANSHIDA OPTOELECTRONICS TECHNOLOGY CO LTD
- Filing Date
- 2025-08-21
- Publication Date
- 2026-07-24
Smart Images
Figure CN224542447U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of liquid crystal display manufacturing technology, specifically to an antistatic glass substrate cleaning structure for liquid crystal display production. Background Technology
[0002] In the production of LCD screens, the glass substrate is one of the core materials, and its surface cleanliness directly affects the display performance and yield of the finished product. Because glass substrates easily attract dust, particulate matter, and static electricity during handling, processing, and storage, they must undergo efficient cleaning before entering critical processes.
[0003] In the existing technology, although there are devices that use roller brushes or rubber scrapers to physically clean glass substrates, their structures are relatively fixed. The contact pressure between the cleaning components and the glass surface is difficult to adaptively adjust according to the surface condition of the substrate, which can easily lead to incomplete cleaning or damage to the substrate surface due to excessive pressure. At the same time, most cleaning structures lack protective designs against static electricity generated by friction during the cleaning process, which can easily cause secondary adsorption of particles on the substrate surface, affecting the cleaning effect and even interfering with subsequent processes. Utility Model Content
[0004] The purpose of this invention is to provide an anti-static glass substrate cleaning structure for LCD screen production, in order to solve the problems mentioned in the background art, such as uneven contact pressure leading to unstable cleaning effect, easy damage to substrate surface, and lack of effective anti-static measures causing secondary adsorption of particles.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a cleaning structure for antistatic glass substrates in the production of liquid crystal displays, comprising a cleaning bracket, an internally mounted mounting base that can float up and down, a rotatable cleaning shaft mounted at the bottom of the mounting base, a composite cleaning brush sleeve fitted on the cleaning shaft, and a support frame at the top center of the cleaning bracket, wherein an adaptive adjustment component consisting of a pressing module, a positioning module and an elastic return spring is provided inside the support frame, and an electrostatic discharge channel is provided inside the cleaning shaft, with conductive slip rings electrically connected to the electrostatic discharge channel fitted at both ends of the mounting base.
[0006] Preferably, the pressing module is fixed to the upper end of the support frame by a driving cylinder, the positioning module is located below the pressing module, the elastic return spring is connected between the bottom of the positioning module and the top of the mounting base, and the cleaning bracket has a movable through groove in the middle that matches the elastic return spring.
[0007] Preferably, the bottom of the support frame is provided with an elastic support ring, and the upper and lower ends of the elastic support ring are respectively bonded and fixed to the bottom of the positioning module and the top of the cleaning bracket.
[0008] Preferably, the side edges of the pressing module and the positioning module are slidably connected to the inner wall of the support frame, and the opposing surfaces of the pressing module and the positioning module are provided with meshing toothed rings.
[0009] Preferably, vertical guide sleeves are fixed on both sides of the cleaning bracket, and a vertical guide shaft moves through the interior of the vertical guide sleeve, with the bottom end of the vertical guide shaft fixedly connected to the connection of the mounting base.
[0010] Preferably, the composite cleaning brush sleeve is composed of a conductive carbon fiber reinforcement layer and a flexible silicone buffer layer, and the outer surface of the composite cleaning brush sleeve is provided with multiple elastic protrusions distributed circumferentially, each elastic protrusion having a microporous structure penetrating its interior.
[0011] Compared with existing technologies, the beneficial effects of this utility model are as follows: The anti-static glass substrate cleaning structure for LCD screen production effectively improves the uniformity and adhesion of the cleaning brush to the substrate surface, enhancing the cleaning effect, while preventing secondary pollution caused by electrostatic adsorption. It has advantages such as simple structure, strong adaptability, and high cleaning efficiency. This structure, through the synergistic action of the pressing module, positioning module, and elastic return spring, achieves adaptive adjustment of cleaning pressure, ensuring that the composite cleaning brush sleeve always maintains uniform adhesion to the glass substrate surface. Furthermore, through the electrostatic discharge channel inside the cleaning shaft and the conductive connection design of the conductive slip ring, it effectively discharges static electricity generated by friction, preventing secondary adsorption of particles. The overall structural layout is reasonable, with sensitive adjustment and stable response. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the antistatic glass substrate cleaning structure for producing a liquid crystal display screen according to this utility model; Figure 2 This utility model provides a schematic diagram of the top structure of a cleaning bracket for an antistatic glass substrate cleaning structure used in the production of liquid crystal displays. Figure 3 This is a schematic diagram of the cleaning axis of the antistatic glass substrate cleaning structure for liquid crystal display production according to the present invention.
[0013] In the diagram: 1. Cleaning bracket; 2. Mounting base; 3. Cleaning shaft; 4. Composite cleaning brush sleeve; 41. Conductive carbon fiber reinforcement layer; 42. Flexible silicone buffer layer; 5. Support frame; 51. Pressing module; 52. Positioning module; 53. Elastic return spring; 54. Elastic support ring; 55. Engaging toothed ring; 6. Static discharge channel; 7. Conductive slip ring; 8. Vertical guide sleeve; 9. Vertical guide shaft. Detailed Implementation
[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0015] Please see Figure 1-3This utility model provides a technical solution: a cleaning structure for antistatic glass substrates in LCD screen production, including a cleaning bracket 1, which is U-shaped. The cleaning bracket 1 has a floating mounting base 2 inside, with both ends of the mounting base 2 slidably connected to the inner walls of the cleaning bracket 1 via sliders. A rotatable cleaning shaft 3 is mounted on the bottom of the mounting base 2 via a support block. A composite cleaning brush sleeve 4 is fitted onto the cleaning shaft 3. A support frame 5 is located at the center of the top of the cleaning bracket 1. The support frame 5 contains a pressing module 51, a positioning module 52, and an elastic composite... The adaptive adjustment assembly, consisting of a positioning spring 53, has a pressing module 51 fixed to the upper end of the support frame 5 via a drive cylinder. A positioning module 52 is positioned below the pressing module 51. An elastic return spring 53 connects the bottom of the positioning module 52 to the top of the mounting base 2. The cleaning bracket 1 has a movable through-slot in the middle that matches the elastic return spring 53. The cleaning shaft 3 has an internal electrostatic discharge channel 6. Both ends of the mounting base 2 are fitted with conductive slip rings 7 electrically connected to the electrostatic discharge channel 6. The conductive slip rings 7 are of model JJC-024D-2A. The precision conductive slip ring conducts static electricity to an external grounding wire via sliding contact, enabling continuous static electricity discharge during the cleaning process. The cleaning bracket 1 is fixed to one side of the glass substrate transport path. During cleaning, the mounting base 2 floats up and down due to the elastic force of the spring 53 and the applied downward pressure, ensuring that the cleaning shaft 3 drives the composite cleaning brush sleeve 4 to remain in contact with the glass substrate surface. The downward pressure module 51, through a driving cylinder, acts on the upper part of the support frame 5, transmitting pressure to the positioning module 52 below. The elastic return spring 53, located between the bottom of the positioning module 52 and the top of the mounting base 2, generates a buffering force after being pressed, maintaining a dynamic balance of cleaning pressure and preventing excessive or insufficient pressure due to uneven substrate surface or transport fluctuations. The cleaning shaft 3, driven by rotation, rotates the composite cleaning brush sleeve 4, efficiently cleaning the glass substrate. Simultaneously, the static electricity discharge channel 6, through contact with the conductive slip ring 7... The structure is electrically connected to an external grounding system to promptly discharge static electricity generated during cleaning due to friction, preventing particle adsorption caused by static electricity accumulation and thus improving cleaning consistency and cleanliness. This structure achieves real-time adjustment of cleaning pressure through an adaptive adjustment component. Combined with the static electricity discharge design, it solves the problems of uneven pressure on cleaning components, easy damage to the substrate, and secondary contamination caused by static electricity in existing technologies, improving the stability of cleaning effect and process adaptability. An elastic support ring 54 is provided at the bottom of the support frame 5, and its upper and lower ends are respectively bonded and fixed to the bottom of the positioning module 52 and the top of the cleaning bracket 1. When the positioning module 52 moves downward under the pressure applied by the pressing module 51, the elastic support ring 54 undergoes elastic deformation, providing buffer support and restoring force, while maintaining the stability of the positioning module 52 during movement, avoiding uneven pressure transmission due to offset or shaking.This further enhances the overall connection rigidity and dynamic response consistency of the structure, thereby improving the accuracy of pressure regulation and the stability of operation during the cleaning process. The side edges of both the pressing module 51 and the positioning module 52 are slidably connected to the inner wall of the support frame 5, and meshing toothed rings 55 are welded and fixed to the opposing surfaces of both modules. In this structure, when the pressing module 51 applies downward pressure under the action of the drive cylinder, its side edge slides along the inner wall of the support frame 5, causing the positioning module 52 to move downward synchronously. The meshing toothed rings 55 between the two modules... The interlocking mechanism ensures stable and synchronized pressure transmission, preventing uneven pressure caused by misalignment or displacement. This further guarantees a good fit and stable cleaning effect between the composite cleaning brush sleeve 4 and the glass substrate surface. Vertical guide sleeves 8 are fixed on both sides of the cleaning bracket 1, and a vertical guide shaft 9 moves through the interior of each vertical guide sleeve 8. The bottom end of the vertical guide shaft 9 is fixedly connected to the mounting base 2. When the mounting base 2 is subjected to the elastic pressure of the elastic return spring 53 during cleaning, the vertical guide shaft 9 moves synchronously with the mounting base 2. The vertical guide sleeve 8 guides and limits the movement of the vertical guide shaft 9, ensuring that the mounting base 2 maintains a stable linear trajectory during its up-and-down floating process, avoiding swaying or shaking. This enhances the guiding accuracy of the mounting base 2's movement and the stability of the overall structure. The composite cleaning brush sleeve 4 is composed of a conductive carbon fiber reinforcement layer 41 and a flexible silicone buffer layer 42. The outer surface of the composite cleaning brush sleeve 4 has multiple circumferentially distributed elastic protrusions, each with a perforated microporous structure. The conductive carbon fiber reinforcement layer 41 has good conductivity and wear resistance, while the flexible silicone buffer layer 42 provides moderate elastic deformation capability. This allows the composite cleaning brush sleeve 4 to effectively remove surface particles when contacting the glass substrate without damaging the substrate due to rigid contact. Simultaneously, the elastic protrusions on the outer surface of the composite cleaning brush sleeve 4 generate local pressure differences during rotational cleaning, enhancing the removal of dust and impurities from the substrate surface. The perforated microporous structure inside the protrusions further enhances the ability to adsorb and contain particles, thereby improving cleaning efficiency and cleanliness.
[0016] Working principle: When using the anti-static glass substrate cleaning structure produced by this LCD screen, the cleaning bracket 1 is first fixedly installed on one side of the glass substrate conveying path. The drive cylinder pushes the pressing module 51 to move downward. The pressing module 51 drives the positioning module 52 to slide down along the inner wall of the support frame 5 synchronously through the meshing toothed ring 55. The elastic support ring 54 provides elastic support for the positioning module 52, while the elastic return spring 53 is compressed and generates buffer force. When the mounting base 2 is under force, it moves downward in a straight line in the vertical guide sleeve 8 through the vertical guide shaft 9. The composite cleaning brush sleeve 4 descends with the cleaning shaft 3 and contacts the surface of the glass substrate. The cleaning shaft 3 rotates under the drive of the external drive mechanism, driving the composite cleaning brush sleeve 4 to rotate synchronously and perform cleaning operations on the surface of the glass substrate. At the same time, the conductive slip rings 7 at both ends of the mounting base 2 form an electrical connection with the external grounding system through the static discharge channel 6 inside the cleaning shaft 3, continuously discharging the static electricity generated during the cleaning process, thereby completing a series of tasks.
[0017] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A cleaning structure for an antistatic glass substrate in the production of a liquid crystal display screen, comprising a cleaning bracket (1), characterized in that: The cleaning bracket (1) has a floating mounting base (2) inside. A rotatable cleaning shaft (3) is installed at the bottom of the mounting base (2). A composite cleaning brush sleeve (4) is fitted on the cleaning shaft (3). A support frame (5) is provided at the center of the top of the cleaning bracket (1). An adaptive adjustment component consisting of a pressing module (51), a positioning module (52) and an elastic return spring (53) is provided inside the support frame (5). An electrostatic discharge channel (6) is provided inside the cleaning shaft (3). Conductive slip rings (7) electrically connected to the electrostatic discharge channel (6) are fitted at both ends of the mounting base (2).
2. The cleaning structure for an antistatic glass substrate in the production of a liquid crystal display screen according to claim 1, characterized in that: The pressing module (51) is fixed to the upper end of the support frame (5) by a driving cylinder. The positioning module (52) is located below the pressing module (51). The elastic return spring (53) is connected between the bottom of the positioning module (52) and the top of the mounting base (2). The cleaning bracket (1) has a movable through groove in the middle that matches the elastic return spring (53).
3. The cleaning structure for an antistatic glass substrate in the production of a liquid crystal display screen according to claim 1, characterized in that: The bottom of the support frame (5) is provided with an elastic support ring (54), and the upper and lower ends of the elastic support ring (54) are respectively bonded and fixed to the bottom of the positioning module (52) and the top of the cleaning bracket (1).
4. The antistatic glass substrate cleaning structure for liquid crystal display production according to claim 1, characterized in that: The side edges of the pressing module (51) and the positioning module (52) are slidably connected to the inner wall of the support frame (5), and the opposing surfaces of the pressing module (51) and the positioning module (52) are provided with meshing toothed rings (55).
5. The antistatic glass substrate cleaning structure for liquid crystal display production according to claim 1, characterized in that: Vertical guide sleeves (8) are fixed on both sides of the cleaning bracket (1), and a vertical guide shaft (9) moves through the interior of the vertical guide sleeve (8), and the bottom end of the vertical guide shaft (9) is fixedly connected to the connection of the mounting base (2).
6. The cleaning structure for an antistatic glass substrate in the production of a liquid crystal display screen according to claim 1, characterized in that: The composite cleaning brush sleeve (4) is composed of a conductive carbon fiber reinforcement layer (41) and a flexible silicone buffer layer (42). The outer surface of the composite cleaning brush sleeve (4) is provided with multiple elastic protrusions distributed along the circumference, and each elastic protrusion is provided with a microporous structure that penetrates its interior.