Sampling inspection device for LCD backlight plate production line

Abstract

The utility model discloses a casual inspection device for an LCD (liquid crystal display) backlight plate production line, which relates to the technical field of assembly line inspection auxiliary equipment and comprises a support, a conveying belt, a lifting mechanism and a photographing device. A supporting seat is fixedly arranged on the support, and the photographing device is located above the supporting seat and fixedly connected to the support. A plurality of supporting plates are fixedly arranged in the supporting base, and the height of the supporting plates exceeds the upper end face of the supporting base. The width of the conveying belt is smaller than that of the to-be-detected object, the conveying belt penetrates through the supporting base, and the lower end face of the conveying belt abuts against the supporting plate; the lifting seat is further provided with a material supporting mechanism, the material supporting mechanism comprises a material supporting plate and a material supporting cylinder connected with the material supporting plate, the height of the end face of the material supporting plate is always lower than that of the end face of the supporting plate, and the material supporting plate advances or retreats under the action of the material supporting cylinder and the guiding piece. Therefore, under the condition that the machine is not stopped, rapid detection is achieved, the product quality is controlled in time, and the detection efficiency is guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary equipment for production line testing, specifically to a sampling inspection device for LCD backlight panel production line. Background Technology

[0002] Ultra-thin LCD backlight panels have many applications in the LCD screen field, such as car dashboards and flexible advertising screens. They generally use DC dimming, which is more eye-friendly and suitable for long-term use, especially for people with sensitive eyes.

[0003] Ultra-thin LCD backlight panels (referred to as backlight boards) are mostly produced on automated production lines. During mass production, cracks that are difficult to detect with the naked eye can easily appear, affecting the product's lifespan. To ensure product qualification rates, backlight boards need to be sampled and inspected periodically during production. Based on the inspection results, equipment parameters are adjusted. The inspection method is generally batch inspection, using auxiliary equipment such as microscopes to determine the presence of impurities, cracks, etc. Some manufacturers also purchase cameras and use imaging equipment to magnify and analyze the images. Direct inspection results are relatively accurate, but require multiple transfers, resulting in low efficiency. During transportation, the backlight boards can also accumulate dust particles, affecting the inspection results. Cameras capable of rapid image capture are expensive and difficult to directly integrate with systems, making them impractical.

[0004] In the prior art, for the convenience of testing, there is a patent with publication number CN222734058U entitled "A Display Screen Carrier Glass Sampling Inspection Device". This device uses a bracket and a storage box to batch test products. However, this device requires a certain number of products to be collected and sent for testing, and is not suitable for direct testing of products on existing production lines. Utility Model Content

[0005] To overcome the above-mentioned defects, the purpose of this utility model is to provide a sampling inspection device for LCD backlight panel production line, which can achieve rapid inspection without stopping the machine, timely control of product quality, and ensure inspection efficiency.

[0006] To achieve the above objectives, this utility model provides a sampling inspection device for an LCD backlight panel production line, comprising a bracket, a conveyor belt, a lifting mechanism, and a photographing device; a support base is fixedly mounted on the bracket, and the photographing device is located above the support base and fixedly connected to the bracket; several support plates are fixedly mounted inside the support base, and the height of the support plates exceeds the upper end face of the support base; the width of the conveyor belt is less than the width of the item to be inspected, the conveyor belt passes through the support base, and the lower end face of the conveyor belt abuts against the support plate; the lifting mechanism includes a lifting seat and a lifting cylinder, the lifting cylinder is fixedly connected to the bracket via a connecting block, the two sides of the lifting seat are clamped to the bracket by several rollers, and the upper part of the lifting seat is connected to the piston rod of the lifting cylinder; the lifting seat is also provided with a material support mechanism, the material support mechanism includes a material support plate and a material support cylinder connected to the material support plate, the end face height of the material support plate is always lower than the end face height of the support plate, and the material support plate moves forward or backward under the action of the material support cylinder and the guide member.

[0007] Preferably, the guide component is a guide rail and a guide slide block, the guide rail is fixedly connected to the lifting seat, the guide slide block is slidably connected to the guide rail, and the material support plate is fixedly connected to the guide slide block.

[0008] Preferably, there are two lifting mechanisms, located on the left and right sides of the conveyor belt's direction of movement, respectively.

[0009] Preferably, a plurality of limiting holes are provided between the lifting seat and the bracket, and limiting bolts are installed in the limiting holes.

[0010] Preferably, the support plate includes a transverse support plate and a longitudinal support plate, the longitudinal support plate being located above the transverse support plate, and the longitudinal support plate is also provided with guide wheels.

[0011] Preferably, a plurality of light sources are installed on the longitudinal support plate and the transverse support plate respectively.

[0012] The beneficial technical effects achieved by this utility model after adopting the above technical solution are as follows:

[0013] 1. Because a support base is set on the bracket and several support plates are used to raise the conveyor belt, the bottom of the items to be inspected is suspended at a certain height. With the lifting seat in the lifting mechanism, the items to be inspected can be lifted to achieve photo inspection. During the photo inspection and analysis process, the photo-taking device will not affect the conveying of other products to be inspected on the entire conveyor belt, and there is no need to stop the machine. After the inspection is completed, the items to be inspected can be put back on the conveyor belt to continue the assembly line operation.

[0014] 2. Since the items to be inspected are temporarily fixed by the material support mechanism and then lifted to a certain height, the photographing device takes pictures at a fixed point. Since the items are in a static state, the focusing effect is better. Only ordinary snapshot cameras are needed, which reduces the procurement and maintenance costs. Compared with dynamic snapshots, there are basically no blurry pictures, so the comparison effect is better. Random sampling inspection can also be achieved, which can further ensure the product qualification rate. Attached Figure Description

[0015] Figure 1 This is a reference schematic diagram of the overall usage state, i.e., the internal structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the material support mechanism in this utility model;

[0017] In the diagram,

[0018] 1. Bracket; 11. Support base; 12. Horizontal support plate; 121. Light source; 13. Vertical support plate; 131. Guide wheel;

[0019] 2. Lifting mechanism; 21. Lifting seat; 211. Rollers; 22. Lifting cylinder;

[0020] 3. Material support mechanism; 31. Guide slide rail; 32. Guide slide block; 33. Material support plate; 34. Material support cylinder;

[0021] 4. Photo taking device;

[0022] 5. Conveyor belt; 51. Item to be inspected. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0024] See Figure 1 , Figure 2 This utility model provides a sampling inspection device for an LCD backlight production line, including a bracket 1, a conveyor belt 5, a lifting mechanism 2, and a photographing device 4. The conveyor belt 5 and the photographing device 4 are both existing technologies. Depending on the actual product model and size, the photographing device 4 generally selects a suitable camera. After taking the picture, it is directly projected or directly compared.

[0025] A support base 11 is fixedly mounted on the bracket 1. The imaging device 4 is located above the support base 11 and is fixedly connected to the bracket 1. Several support plates are fixed inside the support base 11, and the height of the support plates exceeds the upper surface of the support base 11. The width of the conveyor belt 5 is smaller than the width of the item 51 to be inspected. The conveyor belt 5 passes through the support base 11, and the lower surface of the conveyor belt 5 abuts against the support plate. See also Figure 1 In the middle, the support components at both ends of the conveyor belt 5 are not shown. The item 51 to be tested is placed on the conveyor belt 5. The width of the conveyor belt 5 is small. When it passes the support seat 11, it is lifted by the support plate. There is a height difference between the conveyor belt 5 and the support seat 11, which is used to place the material support plate 33 in the material support mechanism 3.

[0026] The lifting mechanism 2 includes a lifting seat 21 and a lifting cylinder 22. The lifting cylinder 22 is fixedly connected to the support 1 via a connecting block. The two sides of the lifting seat 21 are clamped to the support 1 by several rollers 211. The upper part of the lifting seat 21 is connected to the piston rod of the lifting cylinder 22. The lifting seat 21 is also equipped with a material support mechanism 3, which includes a material support plate 33 and a material support cylinder 34 connecting the material support plate 33. The end face height of the material support plate 33 is always lower than the end face height of the support plate. Under the action of the material support cylinder 34 and the guide, the material support plate 33 moves forward or backward. The material support plate 33 is a thin plate with a certain stepped shape, which will not hinder the operation of the conveyor belt 5 when lifting is not required. The transverse support plate 12 in the support seat 11 is for the installation of the light source 121, and the longitudinal support plate 13 is for the installation of auxiliary parts such as guide wheels 131. The guide wheels 131 can generally be directly replaced by standard bearings, the purpose of which is to increase the height while reducing friction.

[0027] The guiding components of this utility model are a guide rail 31 and a guide slide 32. The guide rail 31 is fixedly connected to the lifting seat 21, and the guide slide 32 is slidably connected to the guide rail 31. The material support plate 33 is fixedly connected to the guide slide 32. The material support cylinder 34 provides power for the movement of the material support plate 33, driving the guide slide to move along the guide rail 31, thereby changing the position of the material support plate 33. To ensure the safety of the item 51 to be inspected on the conveyor belt 5, the material support plate should be kept as far away from the conveyor belt 5 as possible in the initial state to avoid damage to the LCD backlight panel due to impact. In addition to inspecting the quality of the LCD backlight panel, this utility model can also be used to inspect the quality of the display. After inspection, it can be put back on the conveyor belt 5 without affecting the operation of the entire conveyor belt 5. The sequence of actions is as follows: the material support cylinder 34 drives the material support plate 33 forward a certain distance, the lifting cylinder 22 pulls the lifting seat 21 upward to the designated position, the photographing device 4 quickly focuses and takes a picture, and if the product is fine, it falls back to the conveyor belt 5, and the material support plate 33 retracts. During the descent, it should be ensured that it does not come into contact with other items 51 to be tested on the conveyor belt 5. Figure 1 For ease of demonstration, only one lifting cylinder 22 was installed.

[0028] The lifting mechanism 2 of this invention consists of two sets, located on the left and right sides of the conveyor belt 5 in the direction of movement. The two lifting mechanisms 2 are generally connected to the same control system, allowing for simultaneous raising or lowering, facilitating steady lifting.

[0029] The lifting seat 21 of this utility model is further provided with several limiting holes between it and the bracket 1, and limiting bolts are installed in the limiting holes. When lifting is not required, the lifting seat 21 is locked in the limiting holes by the limiting bolts to prevent vibration from affecting the normal transport of the item 51 to be tested.

[0030] The support plate of this utility model includes a transverse support plate 12 and a longitudinal support plate 13. The longitudinal support plate 13 is located above the transverse support plate 12, and a guide wheel 131 is also provided on the longitudinal support plate 13. The longitudinal support plate 13 is used to increase the height, and the guide wheel 131 reduces friction, so that the conveyor belt 5 has a small inclined angle, which will not hinder the overall conveying, and is also conducive to the placement of the material support plate 33.

[0031] In this invention, several light sources 121 are respectively installed on the longitudinal support plate 13 and the transverse support plate 12. Adding light sources 121 at the bottom, and adding a backlight plate if necessary, will result in clearer photographic effects.

[0032] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A sampling inspection device for an LCD backlight panel production line, characterized in that, Includes a support frame, conveyor belt, lifting mechanism, and photographic device; A support base is fixedly mounted on the bracket, and the photographing device is located above the support base and is fixedly connected to the bracket; The support base is fixed with several support plates, and the height of the support plates exceeds the upper surface of the support base; the width of the conveyor belt is smaller than the width of the item to be tested, the conveyor belt passes through the support base, and the lower surface of the conveyor belt abuts against the support plate. The lifting mechanism includes a lifting seat and a lifting cylinder. The lifting cylinder is fixedly connected to the bracket via a connecting block. The two sides of the lifting seat are clamped to the bracket by several rollers. The upper part of the lifting seat is connected to the piston rod of the lifting cylinder. The lifting seat is also equipped with a material support mechanism, which includes a material support plate and a material support cylinder connected to the material support plate. The end face height of the material support plate is always lower than the end face height of the support plate. Under the action of the material support cylinder and the guide, the material support plate moves forward or backward.

2. The sampling inspection device for LCD backlight panel production line according to claim 1, characterized in that, The guide components are a guide rail and a guide slide block. The guide rail is fixedly connected to the lifting seat, the guide slide block is slidably connected to the guide rail, and the material support plate is fixedly connected to the guide slide block.

3. The sampling inspection device for an LCD backlight panel production line according to claim 2, characterized in that, The lifting mechanism consists of two sets, located on the left and right sides of the conveyor belt's direction of movement, respectively.

4. The sampling inspection device for LCD backlight panel production line according to claim 3, characterized in that, Several limiting holes are provided between the lifting seat and the bracket, and limiting bolts are installed in the limiting holes.

5. The sampling inspection device for an LCD backlight panel production line according to claim 1, characterized in that, The support plate includes a horizontal support plate and a vertical support plate. The vertical support plate is located above the horizontal support plate, and the vertical support plate is also provided with guide wheels.

6. The sampling inspection device for an LCD backlight panel production line according to claim 5, characterized in that, Several light sources are respectively installed on the longitudinal support plate and the transverse support plate.

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