Polarizer laminating mechanism

Abstract

The utility model discloses a polaroid laminating mechanism in the field of polaroids, which aims to solve the problem of defective rate of polaroid products in the prior art and comprises a laminating mechanism and a dust sticking mechanism, the laminating mechanism is used for extruding and laminating a raw material film to form a polaroid, the dust sticking mechanism is used for cleaning the laminating mechanism, and the laminating mechanism comprises a driving wheel and a driven wheel. The driving wheel is driven by the driving part to rotate, the driven wheel is driven by the driving wheel to rotate, and the dust sticking mechanism comprises a dust sticking roll shaft used for cleaning the driving wheel and a mounting support used for mounting and driving the dust sticking roll shaft to complete cleaning. The driving wheel drives the driven wheel to rotate, the driven wheel extrudes and fits a raw material film to form a polaroid, processing at a high rotating speed can be more stably carried out, the reject ratio of the polaroid is reduced, the productivity is rapidly improved, and a dust sticking mechanism for cleaning the driving wheel is further arranged to adsorb impurities under high-speed production.

Description

Technical Field

[0001] The utility model relates to the field of polaroids, and in particular to a polaroid laminating mechanism. Background Art

[0002] Polarizer manufacturing technology, a key component in display devices, is rapidly improving, with increasingly stringent requirements for production quality and yield. The lamination process in current polarizer manufacturing is closely linked to the quality of these components.

[0003] The traditional bonding method is to form a polarizer by dyeing and stretching raw material films such as polyvinyl alcohol, and then pass through a pair of rollers to achieve double-sided bonding of the polarizer or tight bonding of single-sided bonding of triacetyl cellulose film, PMMA and other protective films with the polarizer. Therefore, the limitation of the bonding method of this bonding wheel is crucial to the warping of the bonded polarizer product, the overall bonding production speed, and the stability of the yield. The traditional representative bonding structure type is a pair of bonding rollers that approach each other to form a roller gap, and run in opposite directions under the control of a motor to complete the bonding action. This bonding method will have a large limitation on the service life of the rollers, and frequent defective product conditions such as curling (also known as warping) of the product after bonding. Utility Model Content

[0004] The purpose of the utility model is to provide a polarizer laminating mechanism, in which a driving wheel drives a driven wheel, the driven wheel extrude the raw material film to produce the polarizer, the driven wheel receives the drive of the driving wheel to rotate more stably and at a high speed, thereby reducing defective polarizers, and the driving wheel is not easy to wear, thereby increasing the service life of the driving wheel.

[0005] In order to solve the above technical problems, the following technical solutions are adopted:

[0006] The utility model provides a polarizer laminating mechanism, comprising a laminating mechanism for extruding and laminating raw material films to form a polarizer and a dust-sticking mechanism for cleaning the laminating mechanism, wherein the laminating mechanism comprises a driving wheel and a driven wheel, the driving wheel is driven to rotate by a driving member, and the driven wheel is driven to rotate by the driving wheel, and the dust-sticking mechanism comprises a dust-sticking roller shaft for cleaning the driving wheel and a mounting bracket for mounting and driving the dust-sticking roller shaft to complete the cleaning.

[0007] Optionally, the driving wheel includes a first driving wheel and a fourth driving wheel, and the driven wheel includes a second driven wheel and a third driven wheel. The second driven wheel and the third driven wheel are close to each other, and there is a gap between them for passing the raw material film. The raw material film is squeezed by the second driven wheel and the third driven wheel to form a polarizer. The first driving wheel is provided on the side of the second driven wheel, and the fourth driving wheel is provided on the side of the third driven wheel. Driving parts are installed at both ends of the shaft core of the first driving wheel and the fourth driving wheel.

[0008] Optionally, the driving members on the first driving wheel and the fourth driving wheel are driving wheel pneumatic motors, and the first driving wheel and the fourth driving wheel are provided with pressure regulating devices for regulating the bonding pressure of the second driven wheel and the third driven wheel on the raw material film. A pressure sensor for sensing the bonding pressure of the raw material film is provided on the pipeline of the driving wheel pneumatic motor, the pressure sensor is electrically connected to the input end of the microprocessor controller, and the pressure regulating device is electrically connected to the input end of the microprocessor controller.

[0009] Optionally, the pressure regulating device includes a cylinder and a pneumatic system, and the cylinder is arranged on the shaft heads of the first driving wheel and the fourth driving wheel, driving the first driving wheel to squeeze the second driven wheel, and the fourth driving wheel to squeeze the third driven wheel, thereby changing the fitting pressure between the second driven wheel and the third driven wheel on the raw material film, and the pneumatic system is electrically connected to the cylinder to control the extension and contraction of the cylinder.

[0010] Optionally, the first driving wheel and the third driven wheel are made of nitrile butadiene rubber, and the second driven wheel and the fourth driving wheel are made of stainless steel.

[0011] Optionally, the lengths of the second driven wheel and the third driven wheel are 15 mm to 20 mm smaller than the width of the raw material mill, and the lengths of the first driving wheel and the fourth driving wheel are greater than the lengths of the second driven wheel and the third driven wheel.

[0012] Optionally, the mounting bracket includes a fixed bracket and a central shaft, a driving member for driving the central shaft to rotate is installed at the end of the central shaft, a fixed bracket is installed on the central shaft, and the fixed bracket is rectangular, with two pairs of sides installed on the central shaft and the other two pairs of sides installed with dust-sticky roller shafts.

[0013] Optionally, the mounting bracket includes a sliding bracket and a slide rail, the sliding bracket is slidably connected to the slide rail, the sticky roller is mounted on the sliding bracket, and the sliding bracket is driven by a bracket pneumatic motor to move on the slide rail to clean the entire driving wheel.

[0014] Optionally, the diameter of the driven wheel is smaller than the diameter of the driving wheel, and the diameter ratio ranges from 1:2 to 1:3.

[0015] Optionally, the sticky roller includes an inner layer and an outer layer, the inner layer material includes any one of a metal aluminum tube and a stainless steel + roller bearing combination, and the outer layer material includes any one of an anti-static silicone sticky layer and a sticky rubber.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The utility model drives the driven wheel to rotate through the driving wheel, and the driven wheel squeezes and bonds the raw material film to form a polarizer. It can process more stably at high speed, reduce the defective rate of polarizers, and achieve rapid improvement of production capacity. The driving wheel is not easy to directly contact the raw material film, which increases the service life of the driving wheel. It is also provided with a dust-sticking mechanism for cleaning the driving wheel to absorb impurities under high-speed production.

[0018] 2. The driving wheel and driven wheel of the utility model adopt a proportional design. The large roller drives and squeezes the small roller to achieve high-speed operation, which can meet the normal and stable production of a maximum speed of 55~65m / min. The small roller squeezes the raw film to form a polarizer. The contact area between the small roller and the raw film is small, which can reduce the warping of the polarizer and defective products.

[0019] 3. The sticky roller of the utility model ensures the cleanliness of the bonding roller. A sticky roller is set on each outermost side, which can reduce the frequency of manual cleaning of the roller, ensure the cleanliness of the roller, and avoid affecting the bonding quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the polarizer laminating mechanism provided by an embodiment of the present utility model in use;

[0021] Figure 2 This is a schematic diagram of the distribution of pressure sensors in an embodiment of the present utility model;

[0022] Figure 3 This is a diagram showing the positional arrangement of the dust-sticking roller shaft according to an embodiment of the present invention;

[0023] Figure 4 This is a structural schematic diagram of a dust-sticking roller shaft according to an embodiment of the present utility model;

[0024] Figure 5 It is another structural schematic diagram of the dust-sticking roller in an embodiment of the present utility model.

[0025] Description of reference numerals:

[0026] 1. First driving wheel; 2. Second driven wheel; 3. Third driven wheel; 4. Fourth driving wheel; 5. Sticky roller shaft; 6. Fixed bracket; 7. Center shaft; 8. Sliding bracket; 9. Slide rail; 10. Driving wheel pneumatic motor; 11. Bracket pneumatic motor; 12. Pressure sensor. DETAILED DESCRIPTION

[0027] The following will be combined with the accompanying 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 only some embodiments of the present invention, rather than all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use.

[0028] Example 1

[0029] like Figure 1-Figure 3 As shown, this embodiment provides a polarizer laminating mechanism, including a laminating mechanism and a dust-binding mechanism. The laminating mechanism includes a driving wheel and a driven wheel. The driving wheel is driven to rotate by a driving wheel pneumatic motor, and the driven wheel is in contact with the surface of the driving wheel. The rotation of the driving wheel drives the driven wheel to rotate. The laminating mechanism includes two driving wheels and two driven wheels. The driving wheel, the driven wheel, the driven wheel, and the driving wheel are arranged in parallel at the same height. There is a gap between the two driven wheels, and a raw material film of the polarizer is provided in the gap. The raw material film is squeezed and laminated through the gap between the two driven wheels to form a polarizer, and is pushed forward by the rotation of the driven wheel to perform automatic extrusion and lamination processing to form a polarizer.

[0030] The dust collection mechanism includes a sticky roller 5 and a mounting bracket. The sticky roller 5 is positioned on the side of the driving wheel and contacts the driving wheel surface. As the driving wheel rotates, impurities on the surface are absorbed by the sticky roller 5, cleaning the driving wheel. This prevents impurities from adsorbing on the driven wheel and affecting the polarizer in the gap. The mounting bracket is used to mount and drive the sticky roller to complete the cleaning process.

[0031] Example 2

[0032] This embodiment provides a polarizer laminating mechanism based on Example 1, which differs from Example 1 in that: the two driving wheels are respectively a first driving wheel 1 and a fourth driving wheel 4, and the two driven wheels are respectively a second driven wheel 2 and a third driven wheel 3, the second driven wheel 2 and the third driven wheel 3 are close to each other with a gap therebetween, a raw material film of the polarizer is provided in the gap, the raw film is squeezed by the second driven wheel 2 and the third driven wheel 3, and the raw films are laminated together to form a polarizer, the first driving wheel 1 is arranged on the other side of the second driven wheel 2, and the fourth driving wheel 4 is arranged on the other side of the third driven wheel 3, and driving wheel pneumatic motors 10 are installed at both ends of the shaft core of the first driving wheel 1 and the fourth driving wheel 4 to drive the first driving wheel 1 and the fourth driving wheel to rotate 4, thereby driving the second driven wheel 2 and the third driven wheel 3 to rotate, thereby realizing automatic extrusion processing of the polarizer.

[0033] The first driving wheel 1 and the fourth driving wheel 4 are both provided with a pressure regulating device for adjusting the gap between the second driven wheel 2 and the third driven wheel 3. The pressure regulating device includes a cylinder and a pneumatic system. The cylinder is arranged on the shaft head of the first driving wheel 1 and the fourth driving wheel 4, and drives the first driving wheel 1 to squeeze the second driven wheel 2 and drives the fourth driving wheel 4 to squeeze the third driven wheel 3, thereby changing the gap between the second driven wheel 2 and the third driven wheel 3, thereby changing the fitting pressure of the second driven wheel 2 and the third driven wheel 3 on the raw material film.

[0034] A pressure sensor 12 is provided on the pipeline of the driving wheel pneumatic motor 10. The pressure sensor 12 is used to obtain the bonding pressure exerted on the raw material film. The cylinder drive is controlled by the pneumatic system to adjust the bonding pressure of the raw material film. The pressure sensor 12 is electrically connected to the input end of the microprocessor controller, and the pressure regulating device is electrically connected to the input end of the microprocessor controller to control the bonding pressure to be set between 0.4Mpa and 2.0Mpa.

[0035] The ratio of the diameter of the first driving wheel 1 and the second driven wheel 2 to the diameter of the fourth driving wheel 4 and the third driving wheel 3 is in the range of 1:2 to 1:3, which can better stabilize the transmission and make the laminating pressure on the raw material film more uniform.

[0036] Specifically, if the diameter of the first driving wheel is 1290 mm, the diameter of the third driven wheel can be selected between 430 and 645 mm;

[0037] Specifically, the first driving wheel and the fourth driving wheel are 1290 mm, and the second and third rollers are 440 mm in this embodiment according to an appropriate proportion. The rollers are arranged in the order of the first driving wheel 1, the second driven wheel 2, the third driven wheel 3 and the fourth driving wheel 4, and the shaft cores are arranged parallel to each other. The raw material film passes through the gap between the second driven wheel 2 and the third driven wheel 3 in the middle to complete the bonding action.

[0038] The shaft core of the first driving wheel 1 and the third driven wheel 3 is preferably a seamless steel tube, and the shaft head is preferably made of 304 stainless steel. The surface rubber coating can be made of one of the following materials: chrome-plated aluminum wheel, liquid silicone rubber, nitrile rubber (NBR), or room temperature vulcanized silicone rubber (RTV). The surface roughness Ra of the roller after the rubber coating is between 0.6±0.4, and the roundness is ≤0.08;

[0039] Specifically, in this embodiment, the first driving wheel 1 and the third driven wheel 3 are made of a seamless steel tube as the shaft core, a 304 stainless steel shaft head, and a roller made of nitrile rubber (NBR) with a surface roughness of 0.6±0.1 and a roundness of 0.04.

[0040] The shaft core of the second driven wheel 2 and the fourth driving wheel 4 is preferably made of carbon fiber, the shaft head is made of 304 stainless steel, and the surface is a stainless steel wheel with HCR (hard chrome plating) mirror finish. The smoothness is as follows: the surface is flat and defect-free, smooth to the touch, and has a pressure bearing capacity of ≥250kg to ensure high-speed operation and bonding effect.

[0041] The lengths of the second and third driven wheels 2 and 4 are 15 to 20 mm shorter than the width of the raw film, allowing for compression and lamination of the effective length of the raw film. The lengths of the first and fourth driving wheels 1 and 4 are greater than the lengths of the second and third driven wheels 2 and 3. This allows the first and fourth driving wheels 1 and 4 to evenly compress the second and third driven wheels 2 and 3, thereby achieving uniform compression of the raw film by the second and third driven wheels 2 and 3.

[0042] like Figure 4 As shown, the mounting bracket includes a fixed bracket 6 and a central shaft 7. A drive element is mounted on the end of the central shaft 7 for driving the rotation of the central shaft 7. The fixed bracket 6 is mounted on the central shaft 7. The fixed bracket 6 is rectangular, with two opposite sides mounted on the central shaft 7 and the other two opposite sides mounted with sticky rollers 5. When the drive element rotates the central shaft 7, the fixed bracket 6 flips, and the sticky rollers 5 on opposite sides of the fixed bracket 6 flip, changing the cleaning area used by the sticky rollers 5.

[0043] The fixed bracket 6 can be made of 304 stainless steel or a similar hardened steel. The bracket can be flipped by the drive of the central shaft, thereby driving the two sticky rollers on both sides to flip. After flipping to a certain angle, it is easy to clean without replacing the sticky rollers, thereby realizing the rational use of the sticky rollers.

[0044] The sticky roller 5 includes an inner layer and an outer layer. The inner layer can be a metal aluminum tube or a combination of stainless steel and roller bearings. The outer layer can be an anti-static silicone sticky layer. The silicone material is anti-static and can better absorb impurities on the driving wheel. It can also be a sticky rubber sticky layer. The rubber is softer and not easy to scratch the surface of the driving wheel.

[0045] Using the above technology implementation plan, we tested the yield rate at high machine speeds of 55m / min and 60m / min, and compared the common polarizer lamination anomalies such as wrinkling and peeling with the conventional two-roller lamination technology. The collected information is organized into a comparison table as follows:

[0046] Table 1 Experimental comparison results between this implementation and the prior art

[0047]

[0048] Among them, ◎ is excellent, ○ is good, △ is acceptable, and X is poor.

[0049] As shown in Table 1, experimental comparisons between this embodiment and the prior art show that the combined roller configuration employed in this embodiment achieves stable operation at speeds of 55-60 m / min, significantly reducing material loss and wrinkling. In contrast, the conventional two-roller lamination system exhibits frequent wrinkling and low yields at a speed of 45 m / min, and the percentage of NG warpage caused by the lamination method is significantly reduced. This comparison demonstrates the significant advantages of this novel technology in improving polarizer production efficiency.

[0050] Example 3

[0051] like Figure 5 As shown, this embodiment provides a polarizer laminating mechanism based on Example 1 or Example 2, with the difference being that: the mounting bracket includes a sliding bracket 8 and a slide rail 9, the sliding bracket 8 is slidably connected to the slide rail 9, the sliding bracket 9 is equipped with the sticky roller 5, and the sliding bracket 8 is driven by the bracket pneumatic motor 11 to move on the slide rail 9 to clean the entire driving wheel.

[0052] Both ends of the sticky roller shaft 5 are mounted on a sliding bracket 8 , and the movement of the sticky roller shaft 5 is controlled by the sliding bracket 8 and a bracket pneumatic motor 11 on the sliding bracket 8 to clean the entire driving wheel.

[0053] The sticky roller shaft 5 has a diameter of 15-30 mm and a length of 30-50 mm, and is more lightweight.

[0054] When in use, the surface of the sticky roller 5 is close to the driving wheel, and the sticky roller 5 absorbs impurities on the surface of the driving wheel and moves back and forth to clean the driving wheel, ensuring that the cleaned driving wheel reaches the required cleaning state.

[0055] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A polarizer laminating mechanism, characterized in that: The invention comprises a laminating mechanism for extruding and laminating raw material films to form a polarizer and a dust-sticking mechanism for cleaning the laminating mechanism. The laminating mechanism comprises a driving wheel and a driven wheel. The driving wheel is driven to rotate by a driving member, and the driven wheel is driven to rotate by the driving wheel. The dust-sticking mechanism comprises a dust-sticking roller for cleaning the driving wheel and a mounting bracket for mounting and driving the dust-sticking roller to complete the cleaning.

2. The polarizer laminating mechanism according to claim 1, wherein: The driving wheels include a first driving wheel and a fourth driving wheel, and the driven wheels include a second driven wheel and a third driven wheel. The second driven wheel and the third driven wheel are close to each other, and there is a gap between them for passing the raw material film. The raw material film is squeezed by the second driven wheel and the third driven wheel to form a polarizer. The first driving wheel is provided on the side of the second driven wheel, and the fourth driving wheel is provided on the side of the third driven wheel. Driving parts are installed at both ends of the shaft core of the first driving wheel and the fourth driving wheel.

3. The polarizer laminating mechanism according to claim 2, wherein: The driving parts on the first driving wheel and the fourth driving wheel are driving wheel pneumatic motors. The first driving wheel and the fourth driving wheel are provided with pressure regulating devices for regulating the bonding pressure of the second driven wheel and the third driven wheel on the raw material film. The pipeline of the driving wheel pneumatic motor is provided with a pressure sensor for sensing the bonding pressure of the raw material film. The pressure sensor is electrically connected to the input end of the microprocessor controller, and the pressure regulating device is electrically connected to the input end of the microprocessor controller.

4. The polarizer laminating mechanism according to claim 3, wherein: The pressure regulating device includes a cylinder and a pneumatic system. The cylinder is arranged on the shaft heads of the first driving wheel and the fourth driving wheel, driving the first driving wheel to squeeze the second driven wheel and the fourth driving wheel to squeeze the third driven wheel, thereby changing the fitting pressure between the second driven wheel and the third driven wheel on the raw material film. The pneumatic system is electrically connected to the cylinder to control the expansion and contraction of the cylinder.

5. The polarizer laminating mechanism according to claim 2, wherein: The first driving wheel and the third driven wheel are made of nitrile butadiene rubber, and the second driven wheel and the fourth driving wheel are made of stainless steel.

6. The polarizer laminating mechanism according to claim 2, wherein: The lengths of the second driven wheel and the third driven wheel are 15 mm to 20 mm smaller than the width of the raw material mill, and the lengths of the first driving wheel and the fourth driving wheel are larger than the lengths of the second driven wheel and the third driven wheel.

7. The polarizer laminating mechanism according to claim 1, wherein: The mounting bracket includes a fixed bracket and a central shaft. A driving member for driving the central shaft to rotate is installed at the end of the central shaft. A fixed bracket is installed on the central shaft. The fixed bracket is rectangular, with two pairs of sides installed on the central shaft and the other two pairs of sides installed with dust-sticking roller shafts.

8. The polarizer laminating mechanism according to claim 1, wherein: The mounting bracket includes a sliding bracket and a slide rail, the sliding bracket is slidably connected to the slide rail, the sticky roller is mounted on the sliding bracket, and the sliding bracket is driven by a bracket pneumatic motor to move on the slide rail to clean the entire driving wheel.

9. The polarizer laminating mechanism according to claim 1, wherein: The diameter of the driven wheel is smaller than that of the driving wheel, and the diameter ratio ranges from 1:2 to 1:

3.

10. The polarizer laminating mechanism according to claim 1, wherein: The sticky roller includes an inner layer and an outer layer. The inner layer material includes any one of a metal aluminum tube and a stainless steel + roller bearing combination. The outer layer material includes any one of an antistatic silicone sticky layer and a sticky rubber.

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