Roller device for alignment and alignment device
By designing an alignment roller device, and utilizing the combination of alignment rollers and cleaning rollers, along with collection components, the problem of foreign matter interference during friction alignment was solved, achieving efficient impurity collection and improving the alignment yield.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KUSN INFOVISION OPTOELECTRONICS
- Filing Date
- 2025-05-29
- Publication Date
- 2026-05-22
Smart Images
Figure CN224266902U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of liquid crystal display processing technology, and in particular to an alignment roller device and an alignment device. Background Technology
[0002] Liquid crystal display (LCD) is a type of flat panel display used in televisions and computers. Its advantages include low power consumption, small size, and low radiation. The LCD industry employs two alignment processes: triboelectric alignment and photoelectric alignment. Triboelectric alignment utilizes a friction cloth to physically rub the alignment film surface, causing the liquid crystal molecules to align. Because this process involves physical contact, the "contact" nature of the friction cloth makes it susceptible to contamination from impurities such as cotton seeds, foreign matter, and PI debris. This can alter the surface condition of the friction cloth, ultimately leading to alignment abnormalities and Mura defects.
[0003] In existing technologies, to address the aforementioned problems, methods include inspecting the friction cloth before use to remove cotton seeds, knots, and long fibers; aging it with plain glass before and during use to remove foreign objects; and reducing the lifespan of the friction cloth by frequent replacement to minimize losses. However, none of these methods completely solve the problem, and the production process cannot effectively prevent these defects from being detected until the light test, potentially leading to a continued escalation of the anomaly.
[0004] Therefore, there is an urgent need for a roller device and a device for alignment to solve the above problems. Utility Model Content
[0005] Based on the above, the purpose of this utility model is to provide a roller device and a device for alignment, which can effectively avoid the adverse effects of foreign matter generated by friction on alignment during the friction alignment process and improve the alignment effect.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] The alignment roller device includes:
[0008] Alignment roller, the alignment roller being rotatable to contact and rub its outer periphery against the alignment film;
[0009] A cleaning roller is provided, which is arranged parallel to the aligning roller, and the outer periphery of the cleaning roller contacts and rotates relative to the outer periphery of the aligning roller.
[0010] A collection component is provided, which is parallel to the alignment roller and disposed between the alignment roller and the cleaning roller. The collection component is provided with a first collection opening and a second collection opening. The first collection opening is disposed toward the position where the alignment roller and the cleaning roller contact each other, and the second collection opening is disposed toward the position where the alignment roller and the alignment membrane contact each other.
[0011] As a preferred embodiment of the alignment roller device, the alignment roller is provided with bristles of a first hardness in its circumferential direction, and the cleaning roller is provided with bristles of a second hardness in its circumferential direction, wherein the first hardness is less than the second hardness.
[0012] As a preferred embodiment of the alignment roller device, the distance between the alignment roller and the cleaning roller is adjustable.
[0013] As a preferred embodiment of the alignment roller device, the alignment roller and the cleaning roller rotate in the same direction.
[0014] As a preferred embodiment of the alignment roller device, the collection assembly includes a collection housing and an exhaust assembly. The collection housing has a collection chamber, and the first collection opening and the second collection opening are disposed in the collection housing and communicate with the collection chamber. The exhaust assembly is at least partially located in the collection chamber to generate negative pressure in the collection chamber.
[0015] As a preferred embodiment of the alignment roller device, the collection housing includes at least three collection plates arranged sequentially end to end and surrounding the collection cavity, wherein the first collection opening and the second collection opening are formed between the first and last ends of one collection plate and one end of the two adjacent collection plates, respectively.
[0016] Alternatively, the collection housing may include a collection plate, which forms the collection cavity by bending, and the collection plate may have a first collection opening and a second collection opening.
[0017] As a preferred embodiment of the alignment roller device, the exhaust assembly includes an exhaust pipe and two exhaust fans. The exhaust pipe passes through the collection chamber and is connected to one of the exhaust fans at each end. The side wall of the exhaust pipe is provided with an exhaust hole communicating with the collection chamber.
[0018] As a preferred embodiment of the alignment roller device, the first collection opening extends along the axis of the alignment roller, or, multiple first collection openings are provided, and the multiple first collection openings are spaced apart along the axis of the alignment roller; and / or, the second collection opening extends along the axis of the alignment roller, or, multiple second collection openings are provided, and the multiple second collection openings are spaced apart along the axis of the alignment roller.
[0019] As a preferred embodiment of the alignment roller device, the alignment roller device is further provided with a mounting frame, the alignment roller and the cleaning roller are rotatably mounted on the mounting frame, and the collection component is mounted on the mounting frame.
[0020] The alignment device includes a support platform and an alignment roller device as described in any of the above embodiments, wherein the alignment roller device is disposed above the support platform.
[0021] The beneficial effects of this utility model are as follows:
[0022] This invention achieves alignment by incorporating an alignment roller whose outer peripheral wall contacts the alignment membrane during rotation. Specifically, the alignment roller device also includes a cleaning roller with its axis parallel to the alignment roller's axis. The cleaning roller's outer peripheral wall contacts and rotates relative to the alignment roller's outer peripheral wall, cleaning the alignment roller's outer peripheral wall during this rotation. Furthermore, the alignment roller device includes a collection assembly positioned between the alignment roller and the cleaning roller. The first collection opening of the collection assembly faces the contact point between the alignment roller and the cleaning roller, collecting impurities cleaned by the cleaning roller. The second collection opening faces the contact point between the alignment roller and the alignment membrane, collecting impurities generated by friction between the alignment roller and the alignment membrane. This targeted collection of impurities results in better collection effectiveness and higher efficiency.
[0023] The alignment device of this utility model, by setting the alignment roller device described in any of the above schemes, can realize the alignment process of the product to be processed, and can effectively reduce the adverse effects of impurities falling from the alignment roller on the alignment effect during the alignment process, resulting in a higher alignment yield. Attached Figure Description
[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.
[0025] Figure 1 This is a side view of the alignment roller device and alignment membrane in conjunction according to a specific embodiment of the present invention;
[0026] Figure 2 This is a side view of the collecting assembly of the alignment roller device provided in a specific embodiment of this utility model;
[0027] Figure 3 This is a schematic diagram of a collection port of the alignment roller device provided in a specific embodiment of this utility model;
[0028] Figure 4 This is a schematic diagram of another collection port of the alignment roller device provided in a specific embodiment of this utility model.
[0029] In the picture:
[0030] 1. Alignment film;
[0031] 100. Alignment rollers;
[0032] 200. Cleaning rollers;
[0033] 300. Collection assembly; 310. First collection opening; 320. Second collection opening; 330. Collection housing; 331. Collection chamber; 332. Collection plate; 333. Welding lug; 340. Exhaust assembly; 341. Exhaust pipe; 342. Exhaust fan; 243. Exhaust port;
[0034] 400. Support platform. Detailed Implementation
[0035] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.
[0036] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.
[0037] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and connections within two components or interactions between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0039] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.
[0040] Figure 1 This is a side view of the alignment roller device and alignment membrane assembly provided in a specific embodiment of this utility model, as shown below. Figure 1 As shown, this embodiment provides an alignment roller device, which includes an alignment roller 100, a cleaning roller 200, and a collection assembly 300. The alignment roller 100 is rotatable so that its outer periphery contacts and rubs against the alignment membrane 1. The cleaning roller 200 is arranged parallel to the alignment roller 100, and the outer periphery of the cleaning roller 200 contacts and rotates relative to the outer periphery of the alignment roller 100. The collection assembly 300 is parallel to the alignment roller 100 and is arranged between the alignment roller 100 and the cleaning roller 200. The collection assembly 300 is provided with a first collection opening 310 and a second collection opening 320. The first collection opening 310 is arranged toward the position where the alignment roller 100 and the cleaning roller 200 contact, and the second collection opening 320 is arranged toward the position where the alignment roller 100 and the alignment membrane 1 contact.
[0041] By setting the alignment roller 100, its outer peripheral wall can contact the alignment membrane 1 and the membrane material during rotation, thereby achieving alignment. Specifically, the alignment roller device is also equipped with a cleaning roller 200. The axis of the cleaning roller 200 is arranged parallel to the axis of the alignment roller 100, and the outer peripheral wall of the cleaning roller 200 can contact and rotate relative to the outer peripheral wall of the alignment roller 100. When the two rotate relative to each other, the outer peripheral wall of the cleaning roller 200 can clean the outer peripheral wall of the alignment roller 100. Meanwhile, the alignment roller device is also provided with a collection component 300 disposed between the alignment roller 100 and the cleaning roller 200. The first collection opening 310 of the collection component 300 is disposed towards the contact position between the alignment roller 100 and the cleaning roller 200, and is used to collect the impurities of the alignment roller 100 cleaned by the cleaning roller 200. The second collection opening 320 of the collection component 300 is disposed towards the contact position between the alignment roller 100 and the alignment membrane 1, and is used to collect the impurities generated by the friction between the alignment roller 100 and the alignment membrane 1, so that the collection of impurities is more targeted, the collection effect is better, and the collection efficiency is higher.
[0042] It is worth noting that the alignment roller 100 and the cleaning roller 200 are tangentially arranged, with the first collection opening 310 facing the point of tangency between them; the alignment roller 100 and the alignment membrane 1 are also tangentially arranged, with the second collection opening 320 facing the point of tangency between them, making the collection of impurities more precise. The diameter of the cleaning roller 200 is set to be smaller than that of the alignment roller 100 to reduce the space occupied; for example, the diameter of the cleaning roller 200 is set to 100mm.
[0043] Specifically, the circumferential arrangement of the alignment roller 100 is provided with bristles of a first hardness, and the circumferential arrangement of the cleaning roller 200 is provided with bristles of a second hardness. By setting the first hardness to be less than the second hardness, the bristles of the cleaning roller 200, which have a higher hardness, provide a better cleaning effect on the alignment roller 100, and also improve the service life of the cleaning roller 200. For example, the axial direction of the alignment roller 100 is provided as a friction cloth, and the bristles of the cleaning roller 200 can be made of organic materials such as down or horsehair.
[0044] Furthermore, the distance between the aligning roller 100 and the cleaning roller 200 is adjustable. By adjusting the distance between the aligning roller 100 and the cleaning roller 200, the brushing force of the cleaning roller 200 on the aligning roller 100 is changed. Under the premise that the aligning roller 100 and the cleaning roller 200 can abut against each other, the larger the distance between the aligning roller 100 and the cleaning roller 200, the smaller the brushing force. Alternatively, the above distance can also be used to adjust the force exerted by the cleaning roller 200 on the aligning roller after the aligning roller 100 is worn. That is, after the aligning roller 100 is worn, its diameter becomes smaller, and the original installation distance can no longer guarantee that the cleaning roller 200 can clean the aligning roller 100. In this case, the problem can be solved by adjusting the distance between the aligning roller 100 and the cleaning roller 200.
[0045] In this embodiment, the alignment roller device is further provided with a mounting frame. Both the alignment roller 100 and the cleaning roller 200 are rotatably mounted on the mounting frame, and the collection component 300 is mounted on the mounting frame. The mounting frame integrates the alignment roller 100, the cleaning roller 200, and the collection component 300, allowing the collection component 300 to move with the rollers, thus improving the collection effect. It is worth noting that, to achieve adjustable spacing between the alignment roller 100 and the cleaning roller 200, one of them can be made adjustable relative to the mounting frame, or both can be made adjustable relative to the mounting frame. Specifically, the adjustment can be achieved by providing an elongated hole on the mounting frame and positioning the rollers at different positions within the hole, or other adjustment methods are not specifically limited here. Preferably, the spacing between the alignment roller 100 and the alignment membrane 1 is adjustable to adjust the force between them, thereby adjusting the alignment effect.
[0046] Optionally, the alignment roller 100 and the cleaning roller 200 rotate in the same direction. In other embodiments, the alignment roller 100 and the cleaning roller 200 can also be configured to rotate in opposite directions, but it is necessary to ensure that the linear velocities of the two rollers are different, and there is a linear velocity difference between them.
[0047] Figure 2 This is a side view of the collecting assembly of the alignment roller device provided in a specific embodiment of this utility model, such as... Figure 2As shown, as an optional embodiment of the alignment roller device, the collection assembly 300 includes a collection housing 330 and an exhaust assembly 340. The collection housing 330 contains a collection chamber 331. A first collection opening 310 and a second collection opening 320 are located in the collection housing 330 and communicate with the collection chamber 331. The exhaust assembly 340 is at least partially located in the collection chamber 331 to generate negative pressure within the collection chamber 331. The arrangement of the collection housing 330 facilitates the layout of the first collection opening 310, the second collection opening 320, and the exhaust assembly 340. The fact that at least a portion of the exhaust assembly 340 is located in the collection chamber 331 ensures that during suction, the gas must pass through the collection chamber 331 and then through the first collection opening 310 and the second collection opening 320 to collect impurities. This provides a uniform gas distribution effect, making the suction more uniform and improving the consistency of suction between the first collection opening 310 and the second collection opening 320.
[0048] In this embodiment, the collection housing 330 includes at least three collection plates 332 arranged sequentially end to end to form a collection cavity 331, wherein the two ends of one collection plate 332 form a first collection opening 310 and a second collection opening 320 between one end of the two adjacent collection plates 332, respectively. Figure 3 This is a schematic diagram of a collection port of the alignment roller device provided in a specific embodiment of this utility model; as shown. Figure 3 As shown, three collection plates 332 are provided. To connect the three collection plates 332, bent welding ears 333 can be provided at both ends of the collection plate 332, which has a first collection opening 310 and a second collection opening 320 at both ends. The first collection opening 310 is between the two welding ears 333 on one side, and the second collection opening 320 is between the two welding ears 333 on the other side. The welding ears 333 are used for welding with the other collection plates 332, making the welded connection more reliable. For example, one collection plate 332 is 60mm wide, and the other two collection plates 332 are 70mm wide, so that the first collection opening 310 and the second collection opening 320 are formed at both ends of the 60mm wide collection plate 332.
[0049] It is understandable that, in order to form the collection cavity 331, the ends of the three collection plates 332 are also provided with end caps. After the three collection plates 332 enclose the space forming a triangular prism, the two end caps are respectively sealed and covered at both ends of the triangular prism space to form the collection cavity 331.
[0050] Specifically, such as Figure 3As shown, the first collection opening 310 extends along the axis of the aligning roller 100, and / or the second collection opening 320 extends along the axis of the aligning roller 100. By setting the collection openings along a preset direction, the effective working area of the collection openings can be increased, the collection effect and efficiency can be improved, and the structural strength of the collection housing 330 can be increased. Figure 4 This is a schematic diagram of another collection port of the alignment roller device provided in a specific embodiment of this utility model, as shown below. Figure 4 As shown, in other embodiments, multiple first collection openings 310 are provided, and the multiple first collection openings 310 are spaced apart along the axis of the alignment roller 100; or multiple second collection openings 320 are provided, and the multiple second collection openings 320 are spaced apart along the axis of the alignment roller 100. With multiple collection openings, the collection housing 330 has higher structural strength. It is understood that when multiple first collection openings 310 and second collection openings 320 are provided, multiple welding ears 333 are also provided, and corresponding collection openings are formed between adjacent welding ears 333. In this case, the first collection openings 310 and second collection openings 320 also extend along the axis of the alignment roller 100.
[0051] Continue to refer to Figure 2 Furthermore, the exhaust assembly 340 includes an exhaust pipe 341 and two exhaust fans 342. The exhaust pipe 341 passes through the collection chamber 331 and is connected to one exhaust fan 342 at each end. By providing two exhaust fans 342, it is beneficial to improve the negative pressure intensity and suction efficiency, so that impurities are collected faster and the suction force is stronger. At the same time, the side wall of the exhaust pipe 341 is provided with exhaust holes 243 communicating with the collection chamber 331. The exhaust holes 243 are arranged in two rows to correspond to the first collection opening 310 and the second collection opening 320 respectively.
[0052] Optionally, in other embodiments, the collection housing 330 includes a collection plate 332, which is bent to form a collection cavity 331, and the collection plate 332 has a first collection opening 310 and a second collection opening 320. The collection housing 330 formed by bending a single collection plate 332 has higher structural strength and fewer processing steps.
[0053] This embodiment also discloses an alignment device, including a support platform 400 and an alignment roller device as described in any of the above embodiments. The alignment roller device is disposed above the support platform 400 and is used to align the product to be processed placed on the support platform 400. The product to be processed can be a liquid crystal display screen. The alignment device equipped with the aforementioned alignment roller can effectively reduce the adverse effects of impurities falling from the alignment roller 100 on the alignment effect, resulting in a higher alignment yield.
[0054] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of this utility model. The content of this specification should not be construed as a limitation of this utility model.
Claims
1. An alignment roller device, characterized in that, include: Alignment roller (100), which is rotatable to contact and rub its outer periphery with the alignment film (1); A cleaning roller (200) is arranged parallel to the alignment roller (100), and the outer periphery of the cleaning roller (200) contacts and rotates relative to the outer periphery of the alignment roller (100). A collection component (300) is provided, which is parallel to the alignment roller (100) and disposed between the alignment roller (100) and the cleaning roller (200). The collection component (300) is provided with a first collection opening (310) and a second collection opening (320). The first collection opening (310) is disposed toward the position where the alignment roller (100) and the cleaning roller (200) are in contact, and the second collection opening (320) is disposed toward the position where the alignment roller (100) and the alignment membrane (1) are in contact.
2. The alignment roller device according to claim 1, characterized in that, The circumferential arrangement of the alignment roller (100) is provided with bristles of a first hardness, and the circumferential arrangement of the cleaning roller (200) is provided with bristles of a second hardness, wherein the first hardness is less than the second hardness.
3. The alignment roller device according to claim 1, characterized in that, The distance between the alignment roller (100) and the cleaning roller (200) is adjustable.
4. The alignment roller device according to claim 1, characterized in that, The aligning roller (100) and the cleaning roller (200) rotate in the same direction.
5. The alignment roller device according to claim 1, characterized in that, The collecting assembly (300) includes a collecting housing (330) and an exhaust assembly (340). The collecting housing (330) has a collecting chamber (331). The first collecting opening (310) and the second collecting opening (320) are disposed in the collecting housing (330) and communicate with the collecting chamber (331). The exhaust assembly (340) is at least partially located in the collecting chamber (331) to generate negative pressure in the collecting chamber (331).
6. The alignment roller device according to claim 5, characterized in that, The collection housing (330) includes at least three collection plates (332) arranged in sequence end to end to form the collection cavity (331), wherein the first collection opening (310) and the second collection opening (320) are formed between the first and last ends of one collection plate (332) and one end of the two adjacent collection plates (332), respectively. Alternatively, the collection housing (330) includes a collection plate (332), which is bent to form the collection cavity (331), and the collection plate (332) is provided with the first collection opening (310) and the second collection opening (320).
7. The alignment roller device according to claim 5, characterized in that, The exhaust assembly (340) includes an exhaust pipe (341) and two exhaust fans (342). The exhaust pipe (341) passes through the collection chamber (331) and is connected to one of the exhaust fans (342) at each end. The side wall of the exhaust pipe (341) is provided with an exhaust hole (343) communicating with the collection chamber (331).
8. The alignment roller device according to claim 1, characterized in that, The first collection opening (310) extends along the axis of the alignment roller (100), or, multiple first collection openings (310) are provided, and multiple first collection openings (310) are spaced apart along the axis of the alignment roller (100); And / or, the second collection opening (320) extends along the axis of the alignment roller (100), or, a plurality of the second collection openings (320) are provided, and the plurality of the second collection openings (320) are spaced apart along the axis of the alignment roller (100).
9. The alignment roller device according to any one of claims 1-8, characterized in that, The alignment roller device is further provided with a mounting frame, the alignment roller (100) and the cleaning roller (200) are rotatably mounted on the mounting frame, and the collection assembly (300) is mounted on the mounting frame.
10. An alignment device, characterized in that, It includes a support platform (400) and an alignment roller device as described in any one of claims 1-9, the alignment roller device being disposed above the support platform (400).