Liquid crystal display panel conveying and aligning device

Abstract

The utility model relates to a liquid crystal panel conveying and aligning device which comprises a conveying mechanism, a lifting mechanism and a clamping mechanism. The conveying mechanism comprises a support and a plurality of roller shaft sets, each roller shaft set comprises a bearing seat, a roller shaft and a roller, the roller shaft sets are connected with the support through the bearing seats, the roller shafts are in bearing connection with the bearing seats, and the rollers are distributed on the roller shafts; the lifting mechanism comprises an air cylinder, a synchronous lifter and a plurality of ejector rods, the ejector rods are connected through the synchronous lifter and driven by the air cylinder, and the air cylinder, the synchronous lifter and the ejector rods are installed on the bottom plate. The clamping mechanism comprises a motor, clamping rods and clamping idler wheels, the clamping rods are installed on the two sides of the liquid crystal panel in parallel, and the clamping idler wheels are distributed on the clamping rods. The panel alignment device is used for solving the problems of low alignment precision and damage to the edges of products in the panel transmission process, and particularly has a remarkable effect on oversized panels. Compared with the prior art, the alignment device has the advantages of simplicity, practicability, stability, reliability, simplicity in maintenance, high alignment precision and the like.

Description

Technical Field

[0001] The utility model relates to an industrial conveying device, in particular to a liquid crystal panel conveying and alignment device. Background Art

[0002] The production process for LCD screens involves numerous steps and complex processes. The entire process, from glass substrates to finished products, is typically completed in factories across different regions. LCD screens are composed of two layers of glass, typically around 1mm thick. Due to the properties of glass, LCD panels are thin and brittle. Under current processes, LCD panels undergo logistics and transportation during production, undergoing positioning, code reading, and inspection. Finally, they are boxed and packaged before being shipped to subsequent factories for assembly and final shipment. With technological advancements, increased production capacity, and rising consumer demands for a better quality of life, LCD panel sizes are increasing, with LCD TVs over 100 inches now common. The production of LCD panels is highly automated, with roller conveyors used for glass transport, requiring smooth handling to prevent degradation of display quality. Furthermore, due to the brittle nature of glass, alignment requires minimal friction from the contact mechanism. Small panels are typically clamped directly on the conveyor mechanism, while larger panels require universal ball bearings to lift them off the conveyor mechanism and then clamp and align them.

[0003] To reduce dust generation and achieve the Class 1000 cleanliness level required by industry standards, the panel conveyor mechanism typically utilizes contactless magnetic transmission. A magnetic wheel and transfer roller are mounted on the hollow shaft that drives the product. A corresponding magnetic wheel is also mounted on the driving shaft that drives the hollow shaft. These two mechanisms utilize magnetic fields to achieve contactless transmission. A motor, through a transmission mechanism, rotates the driving shaft, which in turn rotates the rollers, driving the glass forward. Self-centering ball bearings support the roller shafts. Due to the bulk of the conveyor mechanism for large panels, the roller shafts are typically constructed of stainless steel with a wall thickness of 2mm. To ensure ease of manufacture and handling, the mounting brackets must be strong yet lightweight, ensuring a flat roller surface and reducing labor. A common method is to mount the bearing bracket on a vertical support plate. To minimize runout and wear on the hollow shaft, the bearing brackets must be mounted concentrically. However, this approach increases assembly workload, transportation, and manufacturing costs. Utility Model Content

[0004] The purpose of the present invention is to overcome the defects of the prior art and to provide a liquid crystal panel conveying and alignment device which is simple, practical, stable, reliable, easy to maintain and has high alignment accuracy.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] The utility model provides a liquid crystal panel conveying and alignment device, including a conveying mechanism, a lifting mechanism and a clamping mechanism; the conveying mechanism includes a bracket and multiple roller shaft groups, the roller shaft groups include a bearing seat, a roller shaft and rollers, the roller shaft group is connected to the bracket through the bearing seat, the roller shaft and the bearing seat are connected by bearings, the rollers are distributed on the roller shafts, and the liquid crystal panel rolls on the rollers;

[0007] The lifting mechanism includes a cylinder, a base plate, a synchronous lifter and multiple ejector rods. The base plate is mounted on a bracket. The ejector rods are connected to each other through the synchronous lifter. The ejector rods are connected to the cylinder through the synchronous lifter. The ends of the ejector rods point to the LCD panel. The cylinder, synchronous lifter and ejector rods are mounted on the base plate.

[0008] The clamping mechanism includes a motor, a clamping rod and a clamping roller. The clamping rod is installed parallel to both sides of the liquid crystal panel. The motor is connected to the clamping rod. The clamping roller is distributed on the clamping rod and has rolling friction with the liquid crystal panel.

[0009] Furthermore, the ratio of the number of roller shaft groups to the number of bearing seats is 1:3.

[0010] Furthermore, the bearing connected between the roller shaft and the bearing seat is a self-aligning bearing, which is a self-centering ball bearing.

[0011] Furthermore, a universal ball seat is provided at the end of the push rod, and a universal ball is provided in the universal ball seat.

[0012] Furthermore, the roller shaft group also includes a driven magnetic wheel, which is located at the end of the roller shaft. An active magnetic wheel that cooperates with the driven magnetic wheel is provided on the bracket. The active magnetic wheel is driven by a transmission mechanism driven by a motor, and there is non-contact transmission between the active magnetic wheel and the driven magnetic wheel.

[0013] Furthermore, a magnetic wheel cover is provided on the outside of the active magnetic wheel and the driven magnetic wheel, and the magnetic wheel cover is located on one side of the conveying mechanism bracket.

[0014] Furthermore, the roller shaft is a hollow shaft.

[0015] Furthermore, the bracket is made of aluminum profile.

[0016] Furthermore, an axially penetrating groove is provided on the aluminum profile, a profile nut is provided in the groove, and the bracket 2 is connected to the bearing seat through the profile nut.

[0017] Furthermore, the position of the bearing seat on the roller shaft is adjusted according to the position of the profile nut in the groove in the aluminum profile.

[0018] Compared with the prior art, the utility model has the following advantages:

[0019] 1. The utility model is provided with a conveying mechanism, a lifting mechanism and a clamping mechanism. The conveying mechanism drives the roller shaft group to rotate through the non-contact driving mode of the magnetic wheel, and the rollers of the roller shaft group push the liquid crystal panel to roll forward on the device for transportation; the lifting mechanism is driven by the cylinder and drives the top rod to lift the liquid crystal panel through the synchronous lifter; the clamping mechanism drives the clamping rod through the motor to clamp the liquid crystal panel; the device realizes the functions of transporting, lifting and clamping the liquid crystal panel, operates smoothly and reliably, and has low cost, simple structure and easy maintenance.

[0020] 2. The roller shaft assembly of the utility model is connected to the bracket through a bearing. The bearing seat can be freely adjusted on the roller shaft, which is convenient for installation and maintenance. In addition, multiple bearing seats constitute multiple support fulcrums. The vibration of the shaft is relatively small, and there is no relative movement between the shaft and the bearing, which is not easy to cause wear. At the same time, the product is transmitted smoothly and smoothly, and relative movement and offset are not easy to occur.

[0021] 3. The utility model is equipped with a universal ball seat and a universal ball on the top of the support rod, which creates rolling friction with the product, providing excellent protection for the product and is not prone to scratches and punctures. At the same time, it reduces the thrust of clamping and positioning, reduces the impact on the edge of the panel, and protects the product.

[0022] 4. This utility model uses standard aluminum profiles as the bracket, which is simple, lightweight, and easy to manufacture. It uses self-aligning bearings as the support. The aluminum profiles and bearings are standard parts on the market, which can greatly reduce the difficulty of manufacturing and assembly, saving assembly time and cost. The synchronous lifter adopts a gear rack structure, which is simple to maintain and has a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is the overall schematic diagram of the device after loading the product;

[0024] Figure 2 Schematic diagram of the overall device;

[0025] Figure 3 Schematic diagram of the roller shaft assembly;

[0026] Figure 4 Schematic diagram of the lifting mechanism;

[0027] Figure 5 Schematic diagram of the clamping mechanism.

[0028] In the figure, 1. roller shaft assembly, 2. bracket, 3. magnetic wheel cover, 4. cylinder, 5. base plate, 6. synchronous lifter, 7. push rod, 8. motor, 9. clamping rod, 10. clamping roller, 11. magnetic wheel, 12. bearing seat, 13. roller shaft, 14. roller. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0030] like Figure 1-Figure 5 As shown, this embodiment provides a liquid crystal panel conveying and alignment device, especially for conveying large-size liquid crystal panels exceeding 100 inches. The device includes a conveying mechanism, a lifting mechanism and a clamping mechanism; the conveying mechanism includes a bracket 2, a magnetic wheel cover 3 and multiple roller shaft groups 1, the roller shaft group 1 includes a magnetic wheel 11, a bearing seat 12, a roller shaft 13 and a roller 14, the roller shaft group 1 is connected to the bracket 2 through the bearing seat 12, the roller shaft 13 and the bearing seat 12 are connected by a bearing, the rollers 14 are distributed on the roller shaft 13, and the liquid crystal panel rolls on the rollers 14 ; The lifting mechanism includes a cylinder 4, a base plate 5, a synchronous lifter 6 and multiple push rods 7. The base plate 5 is installed on the bracket 2. The push rods 7 are connected to each other through the synchronous lifter 6. The push rods 7 are connected to the cylinder 4 through the synchronous lifter 6. The end of the push rod 7 points to the liquid crystal panel. The cylinder 4, the synchronous lifter 6 and the push rod 7 are installed on the base plate 5; the clamping mechanism includes a motor 8, a clamping rod 9 and a clamping roller 10. The clamping rod 9 is installed parallel on both sides of the liquid crystal panel. The motor 8 is connected to the clamping rod 9. The clamping rollers 10 are distributed on the clamping rod 9 and there is rolling friction between them and the liquid crystal panel.

[0031] In this embodiment, the roller shaft 13 is driven in a non-contact manner by a pair of magnetic wheels to reduce the amount of dust generated and achieve the thousand-level cleanliness required by industry standards. The end of the roller shaft 13 is a driven magnetic wheel 11, and the active magnetic wheel is installed at the corresponding position on the active shaft that drives the hollow shaft to rotate. The two use the principle of magnetic field to achieve non-contact transmission. The motor drives the active shaft to rotate through the transmission mechanism, and uses the magnetic wheel to drive the roller 14 to rotate, driving the glass forward. A magnetic wheel cover 3 is provided on the outside of the active magnetic wheel and the driven magnetic wheel 11, and the magnetic wheel cover 3 is located on the conveying mechanism bracket 2.

[0032] In this embodiment, the end of push rod 7 is equipped with a universal ball socket, which houses a universal ball. When the LCD panel needs to be positioned within the conveyor mechanism, a lifting mechanism at the bottom, together with the clamping mechanism, lifts the panel from roller 14. The universal ball socket creates rolling friction with the panel, reducing friction and the risk of scratches, while facilitating product position adjustment by the clamping mechanism.

[0033] In particular, the base of the transmission mechanism is built with aluminum profiles. Aluminum profiles are hollow parts that replace traditional metal plates. They have high structural strength and are easy to process. They only need to be sawed into the designed length. They are simple, light, and cost-effective. Due to the large width of large-size LCD panels, the hollow shaft for transmission needs to be designed with three fulcrums, that is, each roller shaft 13 is provided with three bearing seats 12. In order to reduce the concentricity error of the bearings, self-aligning bearings are used, and the self-aligning bearings are self-centering ball bearings. The bearing seat 12 uses a standard bearing mounting seat, which is purchased in bulk and has low cost. The aluminum profile has a groove, and the profile nut is plugged inside. The position of the bearing seat 12 on the roller shaft 13 is adjusted according to the position of the profile nut in the groove in the aluminum profile. The position of the bearing seat 12 can be adjusted arbitrarily for easy installation.

[0034] As a preferred embodiment, the roller shaft 13 is a hollow shaft, so as to reduce the weight of the roller shaft 13 and save materials while ensuring the strength of the rolling shaft.

[0035] When the device is running, the motor drives the roller 14 on the roller shaft 13 to rotate through the gear transmission, and the roller 14 conveys the glass forward. The glass is transported smoothly on the transmission line, the vibration amplitude during product transmission is reduced, the wear resistance of the shaft is increased, the overall lightness and reliability are enhanced, and the handling is convenient. At the same time, the structure of the conveying mechanism is simplified, with many standardized parts, and the assembly difficulty and workload are reduced. During the product alignment process, the clamping force of the clamping mechanism is reduced, which reduces the impact and deformation on the edge of the product and improves the production yield. At the same time, the conveying mechanism has a simple structure and is easy to maintain, which meets the needs of modern industrial automation.

[0036] Bearing seats 12 are mounted at both ends and in the middle of roller shaft 13. The bearings are fixed to bearing seats 12, which are in turn fixed to the aluminum profile frame. The shaft is supported in the middle, minimizing flexural deformation. This minimizes shaft vibration, and there is no relative motion between the shaft and bearings, which reduces wear. Furthermore, product transport is smooth and stable, minimizing relative motion and offset. During alignment, a lifting mechanism lifts the product. The top of the support rod is equipped with a universal ball transfer mechanism, minimizing rolling friction with the product. This provides excellent product protection, reduces scratches and punctures, and reduces the thrust required for clamping and alignment.

[0037] This solution has been verified in mass production on actual machines and has smooth and stable operation, good reliability, low cost, simple structure and easy maintenance.

[0038] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A liquid crystal panel conveying and alignment device, characterized in that: The invention comprises a conveying mechanism, a lifting mechanism and a clamping mechanism; the conveying mechanism comprises a bracket (2) and a plurality of roller shaft groups (1); the roller shaft group (1) comprises a bearing seat (12), a roller shaft (13) and a roller (14); the roller shaft group (1) is connected to the bracket (2) via the bearing seat (12); the roller shaft (13) and the bearing seat (12) are connected via a bearing; the rollers (14) are distributed on the roller shaft (13), and the liquid crystal panel rolls on the rollers (14); The lifting mechanism comprises a cylinder (4), a base plate (5), a synchronous lifter (6) and a plurality of push rods (7); the base plate (5) is mounted on the bracket (2); the push rods (7) are connected to each other via the synchronous lifter (6); the push rods (7) are connected to the cylinder (4) via the synchronous lifter (6); the ends of the push rods (7) point toward the liquid crystal panel; the cylinder (4), the synchronous lifter (6) and the push rods (7) are mounted on the base plate (5); The clamping mechanism comprises a motor (8), a clamping rod (9) and a clamping roller (10); the clamping rod (9) is installed in parallel on both sides of the liquid crystal panel; the motor (8) is connected to the clamping rod (9); the clamping roller (10) is distributed on the clamping rod (9) and has rolling friction with the liquid crystal panel.

2. The liquid crystal panel conveying and alignment device according to claim 1, characterized in that: The ratio of the number of the roller shaft group (1) to the number of the bearing seats (12) is 1:

3.

3. The liquid crystal panel conveying and alignment device according to claim 2, characterized in that: The bearing connected between the roller shaft (13) and the bearing seat (12) is a self-aligning bearing, and the self-aligning bearing is a self-centering ball bearing.

4. The liquid crystal panel conveying and alignment device according to claim 3, characterized in that: A universal ball seat is provided at the end of the push rod (7), and a universal ball is provided in the universal ball seat.

5. The liquid crystal panel conveying and alignment device according to claim 1, characterized in that: The roller shaft assembly (1) further comprises a driven magnetic wheel (11), the driven magnetic wheel (11) being located at the end of the roller shaft (13), and the bracket (2) being provided with an active magnetic wheel cooperating with the driven magnetic wheel (11), the active magnetic wheel being driven by a transmission mechanism driven by a motor, and a non-contact transmission being implemented between the active magnetic wheel and the driven magnetic wheel (11).

6. The liquid crystal panel conveying and alignment device according to claim 5, characterized in that: A magnetic wheel cover (3) is provided on the outside of the active magnetic wheel and the driven magnetic wheel (11), and the magnetic wheel cover (3) is located on one side of the conveying mechanism bracket (2).

7. The liquid crystal panel conveying and alignment device according to claim 1, characterized in that: The roller shaft (13) is a hollow shaft.

8. The liquid crystal panel conveying and alignment device according to claim 1, characterized in that: The bracket (2) is made of aluminum profile.

9. The liquid crystal panel conveying and alignment device according to claim 8, characterized in that: An axially penetrating groove is provided on the aluminum profile, a profile nut is provided in the groove, and the bracket (2) is connected to the bearing seat (12) via the profile nut.

10. The liquid crystal panel conveying and alignment device according to claim 9, characterized in that: The position of the bearing seat (12) on the roller shaft (13) is adjusted according to the position of the profile nut in the groove in the aluminum profile.

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