Automatic feeding device for polaroid cutting

Abstract

The invention discloses an automatic feeding device for polaroid cutting, and relates to the technical field of polaroid production. The device comprises a connecting frame and a box body, the box body is fixedly installed in the top of the connecting frame, an adsorption assembly is arranged between the interior of the box body and the bottom of the connecting frame, a negative pressure assembly is arranged at the top end of the box body, and the adsorption assembly comprises an adsorption cylinder; the adsorption cylinder is composed of a cylinder body at the bottom, a limiting plate in the middle and a feeler lever at the top, the adsorption cylinder is integrally formed, and the cylinder body of the adsorption cylinder is in sliding connection with the bottom of the box body. According to the polaroid adsorption device, for polaroids of different specifications and sizes, the corresponding number of adsorption barrels can comprehensively and uniformly bear force and adsorb the polaroids, the situation that the polaroids are prone to bending deformation due to the dead weight is avoided, the appropriate pressure difference can be selected to adsorb the polaroids according to the different weights of the polaroids, and the polaroid adsorption efficiency is improved. And indentations on the surface of the polaroid due to overlarge pressure are avoided, so that the quality of the polaroid is improved.

Description

Technical Field

[0001] This invention relates to the field of polarizer production technology, and more specifically to an automatic feeding device for polarizer cutting. Background Technology

[0002] A polarizer is a core component that achieves optical functions by selectively transmitting light in a specific direction. It is widely used in display technology, photography, optical instruments and everyday products. After the polarizer is manufactured, it needs to be cut to a certain size to be suitable for different instruments. Therefore, the polarizer needs to be transferred and loaded.

[0003] For example, Chinese invention patent CN117262811B discloses an ultra-large TV polarizer inspection and feeding device. The device uses a suction cup matrix to adsorb the polarizer, which can disperse the force when gripping the polarizer, making the polarizer more evenly stressed. It can also adsorb and grip the part of the polarizer near the edge, preventing the polarizer from sagging and breaking when it bends beyond a certain limit.

[0004] Based on the aforementioned patents and existing technologies, the current automatic feeding devices for polarizing film cutting still have the following shortcomings during use: To avoid scratching the polarizer, suction cups are used to pick up and load it. However, for polarizers of different sizes, the number of suction cups in existing suction devices remains constant and their distribution is relatively scattered. This results in a small contact area for the polarizer. Since the polarizer is relatively soft, it is prone to bending and deformation due to its own weight when the contact area is small or the force is uneven. Furthermore, existing suction devices use air compressors and pipelines to achieve pressure differences, which makes it impossible to accurately control the pressure on the polarizer during suction. Therefore, excessive pressure can easily cause indentations on the surface of the polarizer, thus reducing its quality. Summary of the Invention

[0005] The purpose of this invention is to address the problem that polarizers with small or uneven stress surfaces are prone to bending and deformation due to their own weight, making it impossible to accurately control the pressure they experience during adsorption. Consequently, excessive pressure can easily cause indentations on the surface of the polarizer, thus reducing its quality. This invention provides an automatic feeding device for cutting polarizers.

[0006] To achieve the above objectives, the present invention specifically adopts the following technical solution: An automatic feeding device for cutting polarizing film includes a connecting frame and a box. The box is fixedly installed inside the top of the connecting frame. An adsorption assembly is provided between the inside of the box and the bottom of the connecting frame. A negative pressure assembly is provided at the top of the box. The adsorption assembly includes an adsorption cylinder, which is composed of a bottom cylinder, a middle limiting plate, and a top contact rod. The adsorption cylinder adopts an integral molding design. The cylinder body of the adsorption cylinder is slidably connected to the bottom of the box. The limiting plate and the contact rod are located inside the box. The adsorption cylinders are evenly distributed in an array at the bottom of the box. Suction holes are evenly opened at the top of the cylinder body and are connected to the inside of the cylinder body. A rubber ring is fixedly connected to the bottom end of the cylinder body.

[0007] Furthermore, the cylindrical body extends downward through the connecting frame, and mounting rings are fixedly connected to the outer periphery of the middle part of the cylindrical body. Springs are fixedly connected between the bottom end of the mounting rings and the bottom inner wall of the connecting frame.

[0008] Furthermore, the bottom inner wall and top of the sliding connection between the bottom of the box and the cylinder are fixedly connected with sealing rings, which are respectively pressed into contact with the outer wall of the cylinder and the bottom end of the limiting plate.

[0009] Furthermore, a rubber pad is fixedly connected to the top of the contact rod.

[0010] Furthermore, the rubber ring has a hollow interior design.

[0011] Furthermore, each of the outermost walls of the top of the connecting frame is provided with an installation groove, and each of the outermost walls of the box is fixedly welded with a threaded post. When the connecting frame and the box are installed, the threaded post is located inside the installation groove, and a nut is threadedly connected to the outer side of the threaded post.

[0012] Furthermore, after the nut is installed, any one of the threaded posts is grounded via a wire, and the nut is a flange nut.

[0013] Furthermore, the negative pressure assembly includes a cylinder and a connecting pipe. The connecting pipe is fixedly connected to the center of the bottom end of the cylinder and is fixedly installed to the center of the top of the housing by bolts, and is connected to the interior of the housing. The hydraulic cylinder is fixedly installed at the center of the top of the cylinder, and the telescopic rod of the hydraulic cylinder extends downward into the interior of the cylinder. The piston is slidably connected to the interior of the cylinder, and the center of the top of the piston is fixedly installed with the telescopic rod of the hydraulic cylinder.

[0014] Furthermore, a sealing ring is placed between the bottom end of the connecting pipe and the mounting point at the center of the top of the box.

[0015] Furthermore, a flange is fixedly welded to the center of the top of the housing. The flange is located on the outside of the negative pressure assembly and is used for fixed installation with the transfer robotic arm.

[0016] The beneficial effects of this invention are as follows: 1. This invention, through the design of a uniform array of adsorption cylinders between the housing and the connecting frame, enables a corresponding number of adsorption cylinders to fully and uniformly adsorb polarizers of different sizes, avoiding bending and deformation of the polarizers due to their own weight, thus improving the quality of the polarizers. At the same time, when placing the polarizers, it is only necessary to drive the adsorption cylinders to contact the cutting platform and then continue to press down and retract to release the polarizers. The operation is convenient and facilitates the positioning of the polarizers on the cutting platform.

[0017] 2. This invention, through the design of using a piston to draw air in the negative pressure component, makes it easier to control the negative pressure inside the chamber compared to the method of using an air compressor. This allows for the selection of an appropriate pressure difference to adsorb the polarizer based on its weight, avoiding indentations on the surface of the polarizer due to excessive pressure and improving the quality of the polarizer. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the three-dimensional structure during adsorption of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the present invention after adsorption; Figure 5 This is a partial cross-sectional three-dimensional structural schematic diagram of the present invention; Figure 6 This is an exploded view of the three-dimensional structure of the present invention; Figure 7 This is a partial cross-sectional three-dimensional structural diagram of the box body, adsorption component and negative pressure component of the present invention; Figure 8 This is a partial cross-sectional three-dimensional structural diagram of the box body and adsorption component of the present invention; Figure 9 This is a schematic diagram of a portion of the box body and a single adsorption component of the present invention. Figure 10 This is an exploded three-dimensional cross-sectional view of a portion of the box body and a single adsorption component of the present invention; Figure 11 This is an exploded view of the three-dimensional structure of the housing and negative pressure component of the present invention; Figure 12This is a partial cross-sectional three-dimensional structural diagram of the negative pressure component of the present invention.

[0019] Reference numerals: 1. Connecting frame; 101. Mounting groove; 2. Box body; 3. Adsorption assembly; 301. Adsorption cylinder; 3011. Cylinder body; 3012. Limiting plate; 3013. Contact rod; 302. Suction hole; 303. Rubber ring; 304. Mounting ring; 305. Spring; 4. Negative pressure assembly; 401. Cylinder; 402. Connecting pipe; 403. Hydraulic cylinder; 404. Piston; 5. Threaded column; 6. Nut; 7. Flange; 8. Polarizing film. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0021] An automatic feeding device for cutting polarizing film according to a preferred embodiment of the present invention will be described in detail below: Example 1 like Figures 1-2 , Figures 5-8 As shown, an automatic feeding device for cutting polarizing film includes a connecting frame 1 and a box 2. The box 2 is fixedly installed inside the top of the connecting frame 1. An adsorption component 3 is provided between the inside of the box 2 and the bottom of the connecting frame 1. A negative pressure component 4 is provided at the top of the box 2. The adsorption component 3 includes an adsorption cylinder 301, which is composed of a bottom cylinder 3011, a middle limiting plate 3012, and a top contact rod 3013. The adsorption cylinder 301 adopts an integral molding design. The cylinder 3011 of the adsorption cylinder 301 is slidably connected to the bottom of the box 2. The limiting plate 3012 and the contact rod 3013 are located inside the box 2, and the adsorption cylinders 301 are evenly distributed in an array at the bottom of the box 2. Suction holes 302 are evenly opened at the top of the cylinder 3011 and are connected to the inside of the cylinder 3011. A rubber ring 303 is fixedly connected to the bottom end of the cylinder 3011.

[0022] like Figures 9-10 As shown, the cylinder 3011 extends downward through the connecting frame 1. Mounting rings 304 are fixedly connected to the outer periphery of the middle section of the cylinder 3011. Springs 305 are fixedly connected between the bottom end of the mounting rings 304 and the inner wall of the bottom of the connecting frame 1. This achieves an elastic sliding connection of the adsorption cylinder 301. After the adsorption cylinder 301 is subjected to force and moves upward, the force is released, and the adsorption cylinder 301 can pop back downward under the action of the springs 305.

[0023] like Figures 9-10As shown, sealing rings are fixedly connected to the bottom inner wall and top of the sliding connection between the bottom of the box 2 and the cylinder 3011, respectively, and are in pressure contact with the outer wall of the cylinder 3011 and the bottom end of the limiting plate 3012. Therefore, when the adsorption cylinder 301 is ejected downwards under the action of the spring 305, the suction hole 302 is located on the inner side of the bottom wall of the box 2. By utilizing the pressure contact between the sealing rings and the outer wall of the cylinder 3011 and the bottom end of the limiting plate 3012, the seal at the suction hole 302 can be ensured, preventing air from entering the interior of the cylinder 3011 through the suction hole 302.

[0024] like Figures 9-10 As shown, a rubber pad is fixedly connected to the top of the contact rod 3013. This prevents the top of the contact rod 3013 from making rigid contact with the top of the inner part of the housing 2 when the adsorption cylinder 301 moves upward under force.

[0025] like Figure 10 As shown, the rubber ring 303 has a hollow interior. This allows the rubber ring 303 to be better compressed and deformed, enabling it to better adhere to the surface of the polarizer 8 and improving the stability of adsorption.

[0026] like Figure 1 , Figure 6 As shown, mounting grooves 101 are provided at the center of the outer side wall of the top of the connecting frame 1, and threaded posts 5 are fixedly welded to the center of the outer side wall of the housing 2. When installing the connecting frame 1 and the housing 2, the threaded posts 5 are located inside the mounting grooves 101, and nuts 6 are threadedly connected to the outer side of the threaded posts 5. The opening at the top of the mounting grooves 101 facilitates the assembly of the housing 2 at the top of the connecting frame 1, and then the connecting frame 1 and the housing 2 are fixedly installed by the cooperation of the threaded posts 5 and nuts 6. The height of the housing 2 inside the connecting frame 1 can be adjusted along the mounting grooves 101, thereby adjusting the length of the cylinder 3011 extending downward through the connecting frame 1.

[0027] It should be noted that after the installation of nut 6 is completed, any threaded post 5 should be grounded through a wire. This will enable anti-static treatment of the housing 2 and the adsorption cylinder 301, preventing dust from being attracted by static electricity when the adsorption cylinder 301 comes into contact with the polarizer 8, thus improving the cleanliness of the polarizer 8.

[0028] Nut 6 is a flange nut. By increasing the friction between the inner wall of nut 6 and the connecting frame 1, the stability of the fixed installation between the connecting frame 1 and the housing 2 is further improved.

[0029] like Figure 1As shown, a flange 7 is fixedly welded to the center of the top of the housing 2. The flange 7 is located outside the negative pressure assembly 4 and is used for fixed installation with the transfer robotic arm. This allows the robotic arm to drive the housing 2 and the connecting frame 1 to move, thereby achieving the adsorption and transfer of the polarizer 8.

[0030] During loading, the robotic arm moves the housing 2 and connecting frame 1 above the stack of polarizer 8 (e.g., ...). Figure 3 (As shown), and then the mechanical arm drives the box 2 and the connecting frame 1 to move downward so that the rubber ring 303 at the bottom of the cylinder 3011 is pressed into contact with the top end face of the polarizer 8.

[0031] As the housing 2 and connecting frame 1 continue to move downward, the adsorption cylinder 301 attached to the polarizer 8 will move upward under the action of the reaction force until the top of the contact rod 3013 contacts the top of the inside of the housing 2. At this time, the suction hole 302 moves upward to the inside of the housing 2, and then the air inside the housing 2 is extracted through the design of the negative pressure component 4.

[0032] During the process of extracting air from the inside of the box 2, the suction hole 302 on the adsorption cylinder 301 attached to the polarizer 8 moves upward to the inside of the box 2, which can also extract air from the inside of the cylinder 3011 of the adsorption cylinder 301, causing a negative pressure to be generated inside the cylinder 3011. Combined with the squeezing contact between the rubber ring 303 and the top end face of the polarizer 8, the polarizer 8 can be adsorbed under the action of pressure difference.

[0033] Then, the robotic arm moves the housing 2 and connecting frame 1 for transfer. During the transfer, the adsorption cylinder 301, which has adsorbed the polarizer 8, will pop downwards again under the action of the spring 305. However, the suction hole 302 will also retract back into the bottom wall of the housing 2 and be sealed by the sealing ring, so that the inside of the cylinder 3011 of the suction hole 302 maintains a stable negative pressure to ensure the stable adsorption of a single polarizer 8 (e.g., Figure 4 (As shown).

[0034] After moving to the cutting position, the polarizer 8 is placed on the cutting platform. Under the action of the reaction force of the cutting platform, all the adsorption cylinders 301 will move upward, and the suction holes 302 of all the adsorption cylinders 301 will move upward into the interior of the box 2. With the groove design on the cutting platform, air can enter the interior of the box 2 from the edge of the adsorption cylinders 301 through the groove on the cutting platform, thereby restoring the atmospheric pressure inside the cylinder 3011 of the adsorption cylinders 301, so that the polarizer 8 can be placed on the cutting platform.

[0035] Therefore, during the adsorption of the polarizer 8, the design of the uniformly arrayed adsorption cylinders 301 ensures that the corresponding number of adsorption cylinders 301 can apply force evenly to the polarizer 8 of different sizes, preventing the polarizer 8 from easily bending or deforming due to its own weight. Furthermore, when placing the polarizer 8, simply driving the adsorption cylinders 301 to contact the cutting platform and then pressing them down to retract them releases the polarizer 8, making the operation convenient and facilitating the positioning of the polarizer 8 on the cutting platform.

[0036] Example 2 Furthermore, such as Figures 11-12 As shown, the negative pressure assembly 4 includes a cylinder 401 and a connecting pipe 402. The connecting pipe 402 is fixedly connected to the center of the bottom end of the cylinder 401, and the connecting pipe 402 is fixedly installed to the center of the top of the housing 2 by bolts and communicates with the inside of the housing 2. The hydraulic cylinder 403 is fixedly installed at the center of the top of the cylinder 401, and the telescopic rod of the hydraulic cylinder 403 extends downward into the inside of the cylinder 401. The piston 404 is slidably connected to the inside of the cylinder 401, and the center of the top of the piston 404 is fixedly installed with the telescopic rod of the hydraulic cylinder 403.

[0037] like Figure 11 As shown, a sealing ring is placed between the bottom end of the connecting pipe 402 and the mounting point at the center of the top of the housing 2 to limit the connection. This improves the sealing performance of the connection between the connecting pipe 402 and the housing 2.

[0038] The principle by which the negative pressure component 4 extracts air from inside the chamber 2 is as follows: The piston 404 is driven to move upward inside the cylinder 401 by the action of the hydraulic cylinder 403. During the upward movement of the piston 404, the air inside the housing 2 can be extracted through the connection pipe 402 with the inside of the housing 2.

[0039] By using the piston 404 movement design in the negative pressure component 4, it is easier to control the negative pressure generated inside the housing 2 compared to the air compressor extraction method. This allows for the selection of a suitable pressure difference to adsorb the polarizer 8 based on its weight, thus avoiding indentations on the surface of the polarizer 8 due to excessive pressure.

[0040] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatic feeding device for cutting polarizing film, comprising a connecting frame (1) and a housing (2), characterized in that, The box (2) is fixedly installed inside the top of the connecting frame (1). An adsorption component (3) is provided between the inside of the box (2) and the bottom of the connecting frame (1). A negative pressure component (4) is provided at the top of the box (2). The adsorption component (3) includes: The adsorption cylinder (301) is composed of a bottom cylinder (3011), a middle limiting plate (3012), and a top touch rod (3013). The cylinder (3011) of the adsorption cylinder (301) is slidably connected to the bottom of the box (2). The limiting plate (3012) and the touch rod (3013) are located inside the box (2), and the adsorption cylinders (301) are evenly distributed in an array at the bottom of the box (2). Suction holes (302) are evenly distributed at the top of the cylinder (3011) and are connected to the inside of the cylinder (3011). A rubber ring (303) is fixedly connected to the bottom end of the cylinder (3011).

2. The automatic feeding device for cutting polarizing film according to claim 1, characterized in that, The cylindrical body (3011) extends downward through the connecting frame (1). The outer periphery of the middle part of the cylindrical body (3011) is fixedly connected with an installation ring (304). The bottom end of the installation ring (304) is fixedly connected with a spring (305) between it and the bottom inner wall of the connecting frame (1).

3. The automatic feeding device for cutting polarizing film according to claim 1, characterized in that, The bottom inner wall and top of the box (2) at the sliding connection between the bottom and the cylinder (3011) are fixedly connected with sealing rings, which are respectively pressed into contact with the outer wall of the cylinder (3011) and the bottom end of the limiting plate (3012).

4. The automatic feeding device for cutting polarizing film according to claim 1, characterized in that, A rubber pad is fixedly connected to the top of the contact rod (3013).

5. The automatic feeding device for cutting polarizing film according to claim 1, characterized in that, The rubber ring (303) has a hollow interior design.

6. The automatic feeding device for cutting polarizing film according to claim 1, characterized in that, The connecting frame (1) has an installation groove (101) at the center of the top outer side wall, and the box (2) has a threaded column (5) fixedly welded at the center of the outer side wall. When the connecting frame (1) and the box (2) are installed, the threaded column (5) is located inside the installation groove (101), and the threaded column (5) is threaded with a nut (6) on the outside.

7. The automatic feeding device for cutting polarizing film according to claim 6, characterized in that, After the installation of the nut (6) is completed, any one of the threaded posts (5) is grounded through a wire, and the nut (6) is a flange nut.

8. The automatic feeding device for cutting polarizing film according to claim 1, characterized in that, The negative pressure component (4) includes: A cylindrical tube (401) and a connecting pipe (402) are fixedly connected to the center of the bottom end of the cylindrical tube (401), and the connecting pipe (402) is fixedly installed to the center of the top of the box (2) by bolts and is connected to the inside of the box (2). A hydraulic cylinder (403) is fixedly installed at the center of the top of the cylinder (401), and the telescopic rod of the hydraulic cylinder (403) extends downward into the interior of the cylinder (401); Piston (404) is slidably connected to the inside of cylinder (401), and the center of the top of piston (404) is fixedly installed with the telescopic rod of hydraulic cylinder (403).

9. The automatic feeding device for cutting polarizing film according to claim 8, characterized in that, A sealing ring is placed between the bottom end of the connecting pipe (402) and the installation point at the center of the top of the box body (2).

10. The automatic feeding device for cutting polarizing film according to any one of claims 1-9, characterized in that, A flange (7) is fixedly welded to the center of the top of the box (2). The flange (7) is located on the outside of the negative pressure assembly (4) and is used to be fixedly installed with the transfer robotic arm.

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