Device for measuring thickness of polaroid

Abstract

The utility model discloses a device for measuring the thickness of a polaroid, and relates to the technical field of polaroid thickness measurement. The device for measuring the thickness of the polaroid comprises a cylinder body, two pneumatic claws are symmetrically arranged on the upper surface of the cylinder body, the device is installed on the moving path of the polaroid through an arranged abutting plate, a height measuring sensor and other structures, when the polaroid moves to the position between the two pneumatic claws, the two pneumatic claws drive two silica gel blocks to move towards the polaroid, and the thickness of the polaroid is measured. Meanwhile, the pneumatic claw drives the abutting plate to move towards the height measuring sensor, a sensing head of the height measuring sensor can be pushed by the abutting plate, and after the two silica gel blocks are attached to the polaroid, the thickness of the polaroid can be obtained through the moving distance of the sensing head and an output electric signal. The thickness of the polaroid can be obtained according to the moving distance of the sensing head, and when the thickness is larger than the thickness of one polaroid, the polaroid is sucked again, so that the situation that the adsorption equipment adsorbs a plurality of polaroids at a time is effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of polarizer thickness measurement, in particular to a device for measuring the thickness of a polarizer. Background Technique

[0002] The full name of a polarizer is a polarization light sheet. The imaging of a liquid crystal display must rely on polarized light. All liquid crystals have two polarization light sheets, front and back, closely attached to the liquid crystal glass. The working principle of the polarizer is mainly to convert non-polarized natural light into polarized light, so as to realize the imaging of devices such as liquid crystal displays.

[0003] The production process of the polarizer mainly includes material preparation, film preparation, axial molecular orientation, coating preparation. As required, use a cutting tool to cut the polarizer into the required shape and size, detect and test the polarizer to ensure that it meets the specified standards and quality requirements, and check aspects such as the surface, polarization effect and structure of the polarizer to ensure that there are no defects or damages.

[0004] Most of the cut polarizers will be stacked together. The adsorption device sucks up the polarizers and moves them to the designated position for pasting operations. Common thicknesses of polarizers are 0.15mm, 0.19mm, 0.22mm, 0.26mm, etc. Due to the thin thickness and electrostatic reasons, multiple polarizers are likely to be adsorbed together, and it is easy for the adsorption device to suck up multiple polarizers at one time. If the number of sucked-up polarizers is not detected, it is likely to affect the subsequent polarizer pasting operation. Content of the Utility Model

[0005] Technical problem to be solved: Aiming at the deficiencies of the prior art, the utility model provides a device for measuring the thickness of a polarizer, which solves the problem of inconvenient thickness measurement of the polarizer.

[0006] Technical solution: To achieve the above purpose, the utility model is realized through the following technical solutions: A device for measuring the thickness of a polarizer, including a cylinder body, two air claws are symmetrically arranged on the upper surface of the cylinder body, fixed blocks are connected to the outer sides of the two air claws away from each other, silicone blocks are connected to the upper surfaces of the two fixed blocks, the two silicone blocks extend towards the air claws, a pressing plate is connected to the side of one of the silicone blocks away from the air claw, the lower end of the pressing plate extends downward, the lower surface of the cylinder body is connected with a height measurement sensor through a connecting rod, the sensing head of the height measurement sensor faces the pressing plate, and two fixing rods are symmetrically arranged inside the silicone block, and both ends of the fixing rods extend to both sides inside the silicone block.

[0007] Preferably, connecting blocks are connected to the ends of the corresponding two fixing rods.

[0008] Preferably, two holes are penetrated through the surface of the fixed block.

[0009] Preferably, abutting blocks are connected to the sides of the two silica gel blocks that are close to each other.

[0010] Preferably, the abutting blocks are made of silica gel.

[0011] Preferably, two threaded holes are formed through the surface of the abutting plate.

[0012] Preferably, the abutting plate is made of stainless steel.

[0013] Beneficial effects: The present utility model provides a device for measuring the thickness of a polarizing plate. It has the following beneficial effects:

[0014] By arranging structures such as the abutting plate and the height measurement sensor, the device is installed on the path where the polarizing plate moves. When the polarizing plate moves between the two air grippers, the two air grippers drive the two silica gel blocks to move towards the polarizing plate. At the same time, the air grippers drive the abutting plate to move towards the height measurement sensor, and the sensing head of the height measurement sensor will be pushed by the abutting plate. After the two silica gel blocks are attached to the polarizing plate, the thickness of the polarizing plate can be obtained through the moving distance of the sensing head and the output electrical signal. Compared with the prior art, by tightly attaching the two silica gel blocks to the polarizing plate and then obtaining the thickness of the polarizing plate according to the moving distance of the sensing head, when the thickness is greater than the thickness of one polarizing plate, it is re-sucked, thus effectively preventing the adsorption device from adsorbing multiple polarizing plates at one time. Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of the present utility model;

[0016] Figure 2 It is a schematic structural diagram of the fixing block of the present utility model;

[0017] Figure 3 It is a schematic structural diagram of the silica gel block of the present utility model;

[0018] Figure 4 It is a schematic structural diagram of the fixing rod of the present utility model.

[0019] In the figure: 1, cylinder block; 2, air gripper; 3, fixing block; 4, silica gel block; 5, abutting plate; 6, connecting rod; 7, height measurement sensor; 8, fixing rod; 9, connecting block; 10, hole; 11, abutting block; 12, threaded hole. Specific Embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-4 Figures 1-4 , the present utility model provides a technical solution: a device for measuring the thickness of a polarizer, including a cylinder body 1. Two air grippers 2 are symmetrically arranged on the upper surface of the cylinder body 1. Fixed blocks 3 are connected to the outer sides of the two air grippers 2 away from each other. Silicone blocks 4 are connected to the upper surfaces of the two fixed blocks 3. The two silicone blocks 4 extend towards the air grippers 2. One of the silicone blocks 4 is connected to a pressing plate 5 on the side away from the air gripper 2. The lower end of the pressing plate 5 extends downward. The lower surface of the cylinder body 1 is connected to a height measurement sensor 7 through a connecting rod 6. The sensing head of the height measurement sensor 7 faces the pressing plate 5. Two fixing rods 8 are symmetrically arranged inside the silicone block 4. Both ends of the fixing rod 8 extend to both sides inside the silicone block 4. The height measurement sensor 7 corresponds to the position of the pressing plate 5. The surface of the air gripper 2 is penetrated with threaded holes. The cylinder body 1 and the air gripper 2 as a whole are finger cylinders. The two air grippers 2 can approach or move away from each other. The moving mode of the finger cylinder and the air gripper 2 is prior art and will not be elaborated here. The height measurement sensor 7 is prior art. When the sensing head is squeezed, it will move and output an electrical signal, which will not be elaborated here.

[0022] During operation, the device is installed on the moving path of the polarizer. After the adsorption device sucks up the polarizer and moves it between the two air grippers 2, the two air grippers 2 drive the two silicone blocks 4 to move towards the polarizer. At the same time, the air gripper 2 drives the pressing plate 5 to move towards the height measurement sensor 7. The pressing plate 5 will squeeze the sensing head of the height measurement sensor 7. After the two silicone blocks 4 are in close contact with the polarizer, the sensing head of the height measurement sensor 7 stops moving. The thickness of the polarizer is the distance that the sensing head is pressed down by the pressing plate 5, and an electrical signal is formed inside the height measurement sensor 7 to convert and obtain the specific thickness. When the thickness is greater than the thickness of a polarizer, the adsorption device returns to the suction position to desorb and re-suck. Through the setting of the fixing rod 8, when the silicone block 4 is in close contact with the polarizer, the internal fixing rod 8 will also be stressed, making it difficult for the silicone block 4 to bend and deform, which is conducive to the fit between the silicone block 4 and the polarizer.

[0023] Please refer to Figures 1-4 Figures 1-4 , the present utility model provides a technical solution: connecting blocks 9 are connected to the ends of the corresponding two fixing rods 8.

[0024] During operation, through the setting of the connecting block 9, the two fixing rods 8 and the corresponding connecting block 9 form a whole, improving the overall stability and making it difficult for the silicone block 4 to deform when subjected to external forces.

[0025] Please refer to Figures 1-4 Figures 1-4 , the present utility model provides a technical solution: two holes 10 are penetrated through the surface of the fixed block 3. The inner wall of the hole 10 is provided with threads. The position of the hole 10 corresponds to the threaded hole of the air gripper 2.

[0026] During operation, the provision of the hole 10 facilitates the connection of the fixing block 3 and the gripper 2 through fasteners.

[0027] Please refer to Figures 1-4 , the present utility model provides a technical solution: on one side of each of the two silica gel blocks 4 close to each other, there is a connecting abutting block 11, and the width of the abutting block 11 is greater than the width of the silica gel block 4.

[0028] During operation, due to the provision of the abutting block 11, the contact area between the side surface of the silica gel block 4 and the polarizing plate can be increased. When the two silica gel blocks 4 are close to the polarizing plate, since the contact area with the polarizing plate is relatively large, the ends of the silica gel blocks 4 are not prone to bending deformation.

[0029] Please refer to Figures 1-4 , the present utility model provides a technical solution: the abutting block 11 is made of silica gel.

[0030] During operation, the silica gel abutting block 11 is relatively soft, which can prevent the polarizing plate from being damaged due to the hard contact between the abutting block 11 and the polarizing plate.

[0031] Please refer to Figures 1-4 , the present utility model provides a technical solution: two threaded holes 12 are formed through the surface of the abutting plate 5, and the positions of the threaded holes 12 correspond to the holes 10.

[0032] During operation, due to the provision of the threaded holes 12, it is convenient to connect the abutting plate 5 and the fixing block 3 through fasteners.

[0033] Please refer to Figures 1-4 , the present utility model provides a technical solution: the abutting plate 5 is made of stainless steel.

[0034] During operation, the stainless steel abutting plate 5 has better hardness, which is beneficial to the long-term use of the abutting plate 5.

[0035] In summary, the device is installed on the path of the movement of the polarizing plate. After the adsorption device picks up the polarizing plate and moves it between the two grippers 2, the two grippers 2 drive the two silica gel blocks 4 to move towards the polarizing plate. At the same time, the gripper 2 drives the abutting plate 5 to move towards the height measurement sensor 7. The abutting plate 5 will squeeze the sensing head of the height measurement sensor 7. After the two silica gel blocks 4 are close to the polarizing plate, the sensing head of the height measurement sensor 7 stops moving. The thickness of the polarizing plate is the distance that the sensing head is pressed down by the abutting plate 5, and an electrical signal is formed inside the height measurement sensor 7 to convert and obtain the specific thickness. When the thickness is greater than the thickness of one polarizing plate, the adsorption device returns to the picking position to desorb and pick up again, thereby preventing the situation that the adsorption device drives multiple polarizing plates to the attaching position at one time.

[0036] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0037] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for measuring the thickness of a polarizer, comprising a cylinder (1), characterized in that: Two air grippers (2) are symmetrically arranged on the upper surface of the cylinder body (1), and the two air grippers (2) are connected to a fixed block (3) on the side away from each other. The upper surfaces of the two fixed blocks (3) are connected to a silicone block (4), and the two silicone blocks (4) extend in the direction of the air grippers (2). One of the silicone blocks (4) is connected to a stop plate (5) on the side away from the air grippers (2), and the lower end of the stop plate (5) extends downward. The lower surface of the cylinder body (1) is connected to a height measuring sensor (7) via a connecting rod (6), and the sensor head of the height measuring sensor (7) faces the stop plate (5). Two fixed rods (8) are symmetrically arranged inside the silicone block (4), and the two ends of the fixed rods (8) extend to the two sides inside the silicone block (4).

2. The device for measuring the thickness of a polarizer according to claim 1, characterized in that: The ends of the two corresponding fixing rods (8) are connected with connecting blocks (9).

3. The device for measuring the thickness of a polarizer according to claim 1, characterized in that: Two holes (10) are formed through the surface of the fixing block (3).

4. The device for measuring the thickness of a polarizer according to claim 1, characterized in that: The adjacent sides of the two silica gel blocks (4) are both connected with a stop block (11).

5. The device for measuring the thickness of a polarizer according to claim 4, characterized in that: The stopper (11) is made of silicone.

6. The device for measuring the thickness of a polarizer according to claim 3, characterized in that: Two threaded holes (12) are formed through the surface of the abutment plate (5).

7. The device for measuring the thickness of a polarizer according to claim 1, characterized in that: The abutment plate (5) is made of stainless steel.

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