Liquid crystal display test clamping device

Abstract

The utility model relates to the field of liquid crystal display testing, in particular to a liquid crystal display testing clamping device which comprises a support, and a conveying belt used for conveying liquid crystal display plastic sheets for inspection is arranged in the support in a connected mode. The two sets of conveying belts are arranged and located in the two sides of the support correspondingly, and the support is connected with a power mechanism for driving the conveying belts to operate. According to the device, firstly, conveying belt equipment which generally and directly occupies the position below a scanning instrument is divided into two parts, the conveying belts divided into two groups are located at the two ends of the device respectively, a blank area is reserved below a probe of the scanning instrument, and therefore the scanning test effect cannot be affected; the clamping assembly not only can clamp and position the plastic sheets to be inspected, but also is provided with a guide part to assist the conveying belt in effectively supporting and conveying the plastic sheets in a blank area.

Description

TECHNICAL FIELD

[0001] The utility model relates to liquid crystal screen test field, concretely refers to a kind of liquid crystal screen test clamping device. BACKGROUND

[0002] Liquid crystal screen is with liquid crystal material as basic component, fills liquid crystal material between two parallel plates, changes the arrangement condition of particle in liquid crystal material by voltage to reach the purpose of light and light transmission to display screen of the image of different shades, well-proportioned.

[0003] Liquid crystal screen surface contains one side transparent plastic sheet, in the production process of liquid crystal screen, plastic sheet needs to be tested and inspected, if plastic sheet has fold, scratch, spot, it will affect the light and shadow of liquid crystal screen, generally test, by installing a conveyor belt below inspection instrument, plastic sheet is placed on conveyor belt one by one, passes below inspection instrument probe, and the quality is investigated by scanning, since conveyor belt belt part is generally a whole piece, and its surface color also almost adopts deep color, the detection of transparent plastic sheet will bring great light blocking effect, therefore, a kind of liquid crystal screen test clamping device is provided. UTILITY MODEL CONTENT

[0004] I. technical problems to be solved

[0005] The utility model to be solved technical problem is that conveying equipment for scanning test and inspection of display screen such as liquid crystal screen generally uses conveyor belt, and the detection of liquid crystal screen plastic sheet is also not exceptional, and the belt of non-light-transmitting and deep color bearing plastic sheet will produce greater obstruction when scanning and testing transparent plastic sheet.

[0006] II. technical scheme

[0007] To solve the above technical problems, the technical scheme provided by the utility model is as follows: a kind of liquid crystal screen test clamping device, including support, the support is connected with conveyor belt for conveying liquid crystal screen plastic sheet and is inspected.

[0008] The conveyor belt is provided with two groups and is installed on the both sides of support respectively, and the support is connected with power mechanism for driving the operation of conveyor belt.

[0009] The support top is connected with clamping assembly capable of positioning for liquid crystal screen plastic sheet and is inspected, and the support bottom is connected with opening and closing mechanism capable of driving clamping assembly to clamp liquid crystal screen plastic sheet.

[0010] Further, the support includes a plurality of carriages, the support plates are connected between the both ends of carriage, and the carriage is bent downward below transmission belt.

[0011] Further, the conveying belt includes a belt, the belt is rotationally connected with roller cylinders at both ends, the support is rotationally connected with a transmission shaft, a driven shaft and a plurality of support shafts for bearing the roller cylinders, and the transmission shaft and the driven shaft are respectively arranged in two groups of transmission belts.

[0012] Further, the power mechanism includes a chain wheel one and a chain wheel two, the chain wheel one and the chain wheel two are respectively arranged at one end of the transmission shaft and the driven shaft, the chain wheel one and the chain wheel two are rotationally connected with a chain, and the support is rotationally connected with a second motor which is rotationally connected with the transmission shaft.

[0013] Further, the clamping assembly includes oppositely arranged supports, a plurality of support columns are rotationally connected in the supports, clamping rollers are rotationally connected on the support columns, clamping grooves which are matched with the plastic sheets of the liquid crystal screen are arranged on the outer sides of the clamping rollers, and the bottom surfaces of the clamping grooves are arranged at the same height as the top surfaces of the belt.

[0014] Further, the opening and closing mechanism includes a screw rod, the screw rod is rotationally connected between the support plates, the outer thread structures at both ends of the screw rod are arranged in opposite directions, the support is rotationally connected with a first motor which is rotationally connected with the screw rod, screw sleeves which are rotationally connected with both ends of the screw rod through thread cooperation are arranged below the support, and slide sleeves which are rotationally connected with the slide frame are arranged below both ends of the support.

[0015] III. Advantages

[0016] Compared with the prior art, the device has the following advantages: the device first divides the conveying belt equipment which is generally directly arranged below the scanning instrument into two groups, the two groups of conveying belts are respectively arranged at both ends of the device, a blank area is left below the probe of the scanning instrument, so that the scanning test effect is not affected, clamping assemblies are arranged on both sides of the blank area, the clamping assemblies not only have the effects of clamping and positioning the plastic sheets, but also have guiding components, and the guiding components assist the conveying belt in effectively supporting and conveying the plastic sheets in the blank area. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a schematic view of the appearance structure of the liquid crystal screen test clamping device Figure 1 .

[0018] Figure 2 is a schematic view of the appearance structure of the liquid crystal screen test clamping device Figure 2 .

[0019] Figure 3 is a schematic view of the appearance structure of the liquid crystal screen test clamping device Figure 3 .

[0020] Figure 4The utility model relates to a kind of appearance structure schematic diagram of liquid crystal screen test clamping device Figure 4 .

[0021] Figure 5 Is Figure 2 The structure schematic diagram of part A in

[0022] As shown in the figure: 1, support, 2, support plate, 3, screw rod, 4, screw sleeve, 5, support, 6, sliding sleeve, 7, sliding frame, 8, No. 1 motor, 9, support column, 10, clamping roller, 11, clamping groove, 12, roller, 13, belt, 14, transmission shaft, 15, No. 2 motor, 16, driven shaft, 17, support shaft, 18, chain wheel one, 19, chain, 20, chain wheel two. Specific embodiments

[0023] The utility model makes further detailed description in combination with the drawings.

[0024] Example one

[0025] To solve the above technical problems, the technical scheme provided by the utility model is: in combination with the drawings Figures 1-4 It can be simply seen that a kind of liquid crystal screen test clamping device, including support 1, support 1 as the main part of the device, it includes multiple sliding frames 7, the sliding frame 7 both ends are jointly connected with support plate 2, the device is installed below the detection camera instrument by support plate 2, as the main part or important part of transmission inspection equipment;

[0026] Through the drawings Figures 1-4 Any one of the drawings, it can be understood that the support 1 is connected with the conveying belt for conveying liquid crystal screen plastic sheet inspection, the conveying belt is provided with two groups and is respectively arranged in the support 1 both sides, the conveying belt includes belt 13, the both ends of the belt 13 are rotatably connected with roller 12, the support 1 is connected with transmission shaft 14, driven shaft 16 and multiple support shafts 17 for bearing roller 12, the transmission shaft 14 and driven shaft 16 are respectively arranged in two groups of transmission belt, the power mechanism for driving the conveying belt to run is connected on the support 1, through the drawings Figures 2-3 Support 1 side, the power mechanism includes chain wheel one 18 and chain wheel two 20, the chain wheel one 18 and chain wheel two 20 are respectively connected with one end of transmission shaft 14 and driven shaft 16, the chain wheel one 18 and chain wheel two 20 are jointly connected with chain 19, the support 1 side is connected with No. 2 motor 15 that is mutually driven with transmission shaft 14;

[0027] First, the traditional conveyor belt used for feeding and inspecting plastic sheets in the quality testing of LCD screens is modified. Instead of using one large conveyor belt, two small conveyor belts are used, one at each end of the support 1, namely the feeding end and the discharging end. The blank area in the middle provides space for the testing and scanning equipment, allowing the plastic sheet to be scanned in an unobstructed and transparent state, thereby more effectively detecting quality problems such as scratches.

[0028] The two sets of conveyor belts operate on the same principle as traditional conveyor belts. The internal structure of both conveyor belts consists of a support shaft 17, rollers 12, belts 13, etc. Both sets of conveyor belts use a single No. 2 motor 15 as a power source. After the No. 2 motor 15 is installed on one side of the bracket 1, its output end is connected to the drive shaft 14 of one set of conveyor belts. First, one set of conveyor belts runs. The drive shaft 14 in this set of conveyor belts and the driven shaft 16 in the other set are connected by a chain 19 and sprocket transmission component. In this way, the other set of conveyor belts can run synchronously with the first set of conveyor belts under the operation of the No. 2 motor 15. The rollers 12 inside them rotate at the same speed and in the same direction, providing power for the movement of the LCD screen plastic sheet under the camera during inspection.

[0029] Example 2

[0030] Combined with Figures 1-4 It can be seen that the top of the bracket 1 is connected to a clamping assembly that can provide positioning for the plastic sheet of the LCD screen to be inspected. The clamping assembly includes supports 5 arranged opposite to each other, and further connected by an attached figure (as shown in the thumbnail). Figure 5 Upon close inspection, multiple support columns 9 are rotatably connected inside the support 5. Clamping rollers 10 are connected to the support columns 9. The outer side of the clamping rollers 10 is provided with clamping grooves 11 that cooperate with the plastic sheet of the LCD screen. The bottom surface of the clamping grooves 11 is set at the same height as the top surface of the belt 13.

[0031] The clamping assembly, consisting of two opposing supports 5, continues to conduct the plastic sheet within the blank space between the two sets of conveyor belts mentioned above. Furthermore, by moving the supports 5 closer or further apart, the clamping area of ​​the clamping assembly is standardized, providing clamping and positioning for the plastic sheet. Because the top surface of the belt 13 and the clamping groove 11 are designed to be uniformly positioned, when the plastic sheet lies flat on the belt 13, it can also be horizontally inserted into the clamping grooves 11 on each clamping roller 10. The supports 5, moving closer together, clamp the two ends of the plastic sheet to the clamping roller 10 within the clamping grooves 11. The path and placement of the clamped plastic sheet for inspection are standardized, which is beneficial for scanning and testing. Moreover, the clamping roller 10 rotates freely on the supports 5 via the support column 9, reducing resistance during the inspection process.

[0032] Combined with appendixFigures 1-5 It can be seen that the bottom of the support 1 is connected with an opening and closing mechanism capable of driving the clamping assembly to clamp the plastic sheet of the liquid crystal screen, the opening and closing mechanism comprises a screw rod 3, the screw rod 3 is rotatably connected between the support plates 2, the outer thread structure at both ends of the screw rod 3 is oppositely arranged, one side of the support 1 is connected with a No. 1 motor 8 which is in transmission cooperation with the screw rod 3, the lower part of the support 5 is connected with a screw sleeve 4 which is in threaded cooperation with both ends of the screw rod 3, the lower part of both ends of the support 5 is connected with a sliding sleeve 6 which is in sliding cooperation with the sliding frame 7, and the sliding frame 7 is downwardly bent at the lower part of the transmission belt;

[0033] When the No. 1 motor 8 operates, the screw rod 3 which is one of the support parts of the support 5 will rotate in the support 1, and since the both ends of the support 5 are supported on the sliding frame 7 through the sliding sleeve 6, the movement of the support 5 is limited, so that the two supports 5 will move along the axial direction of the screw rod 3 after the screw rod 3 rotates, and since the screw rod 3 is a bidirectional threaded screw rod 3, the clamping mechanism formed by the two supports 5 can be opened and closed to clamp or disassemble the plastic sheet with different widths, and since the transmission belt in the foregoing is also arranged in the support 1, in order to limit the movement of the support 5 and prevent it from touching the transmission belt, the part of the sliding frame 7 on which the sliding sleeve 6 slides and which is located directly below the transmission belt is bent downwardly, so that the support 5 can be prevented from moving too close to the center of the support 1.

[0034] In the specific implementation of the utility model, personnel first adjust the distance between the two supports 5 according to the size of the plastic sheet of the liquid crystal screen to be tested, through the operation of the No. 1 motor 8, the clamping area is consistent with the width of the plastic sheet, and then the plastic sheet is sent and inspected one by one; when the plastic sheet is sent and inspected, it is first placed on the transmission belt at the inspection inlet end, at this time, the transmission belt has been continuously running under the power support of the No. 2 motor 15, the left and right positions of the plastic sheet on the transmission belt are manually adjusted to align the clamping assembly, then the plastic sheet is inserted into the clamping groove 11 of the clamping assembly by lightly and forcibly assisting with the hand, at this moment, the plastic sheet is in a state of being lifted by the transmission belt and clamped by the clamping assembly, and remains in this state for a long time, since the transmission belt continuously pushes the plastic sheet downwardly below the camera probe, the plastic sheet comes to the hollow area between the two supports 5, and a large range below this area is not blocked by any light-blocking obstacle, so that the testing instrument can well scan and inspect the transparent plastic sheet, after the plastic sheet moves to a certain position, the front end of the plastic sheet arrives at another transmission belt, and after a while, the rear end of the plastic sheet is separated from the previous transmission belt, and thereafter the driving force of the plastic sheet comes from the next group of transmission belts, and the plastic sheet is finally separated from the clamping assembly by the transmission belt at the outlet end, that is, the quality detection test is completed.

[0035] The above has described the utility model and its implementation mode, which is not restrictive, and the drawings only show one of the implementation modes of the utility model, and the actual structure is not limited thereto. In summary, if a person skilled in the art is inspired thereby, without departing from the creative purpose of the utility model, similar structural modes and embodiments are not creatively designed, which should belong to the protection scope of the utility model.

Claims

1. A liquid crystal screen test clamping device, comprising a support (1), a conveying belt is arranged in the support (1) for conveying liquid crystal screen plastic pieces, characterized in that: the conveying belt is arranged in two groups and is arranged on both sides of the support (1), and a power mechanism is arranged on the support (1) to drive the conveying belt to run; a clamping assembly is arranged on the top of the support (1) to provide positioning for the liquid crystal screen plastic pieces, and an opening and closing mechanism is arranged in the bottom of the support (1) to drive the clamping assembly to clamp the liquid crystal screen plastic pieces. The support (1) comprises a plurality of carriages (7), and a support plate (2) is arranged between the two ends of the carriage (7). The carriage (7) is arranged to be bent downward below the conveying belt. The conveying belt comprises a belt (13), and a roller (12) is rotatably connected to both ends of the belt (13). A transmission shaft (14), a driven shaft (16) and a plurality of support shafts (17) are arranged in the support (1) to support the roller (12). The transmission shaft (14) and the driven shaft (16) are arranged in the two groups of conveying belts respectively.

2. The liquid crystal panel testing clamping device according to claim 1, wherein: The power mechanism comprises a chain wheel one (18) and a chain wheel two (20), which are arranged at one end of the transmission shaft (14) and the driven shaft (16) respectively. The chain wheel one (18) and the chain wheel two (20) are rotatably connected to each other by a chain (19). A second motor (15) is arranged on one side of the support (1) and is in transmission cooperation with the transmission shaft (14).

3. The test fixture of claim 1 wherein: The clamping assembly comprises oppositely arranged supports (5), a plurality of support columns (9) are rotatably connected in the supports (5), clamping rollers (10) are arranged on the support columns (9), clamping grooves (11) are arranged on the outer sides of the clamping rollers (10) and are matched with the liquid crystal screen plastic pieces, and the bottom surfaces of the clamping grooves (11) are arranged at the same height as the top surfaces of the belt (13).

4. The liquid crystal panel testing clamping device according to claim 3, wherein: The opening and closing mechanism comprises a screw rod (3), which is rotatably connected between the support plates (2). The outer thread structures of the two ends of the screw rod (3) are arranged in opposite directions. A first motor (8) is arranged on one side of the support (1) and is in transmission cooperation with the screw rod (3). Screw sleeves (4) are arranged below the supports (5) and are in threaded cooperation with the two ends of the screw rod (3). Slide sleeves (6) are arranged below the two ends of the supports (5) and are in sliding cooperation with the carriages (7).

5. The test fixture of claim 4, wherein: ​ 6. The test fixture of claim 5, wherein: ​

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