A polarizer three-axis unwinding and cutting device

Abstract

This utility model discloses a three-axis unwinding and cutting device for polarizing film, including a stand on a machine base. The stand includes a first truss and a second truss connected by several crossbars. The first truss and the second truss are spaced apart and form a receiving area. Three sets of air shafts are vertically spaced within the receiving area. The three sets of air shafts are used to hold polarizing film rolls, and each set of air shafts is connected to the first truss and the second truss through a tension adjusting part. The tension adjusting part includes a safety chuck rotatably mounted on the first truss and the second truss, a magnetic powder clutch motor mounted on the first truss, and a tension sensor mounted on the machine base. The two sets of safety chucks are used to clamp the air shafts, and the magnetic powder clutch motor is drivenly connected to the safety chucks on the first truss. When cutting polarizing film rolls, three rolls can be placed simultaneously, effectively improving cutting efficiency and production capacity.

Description

Technical Field

[0001] This utility model relates to the field of polarizer processing technology, specifically a three-axis unwinding and cutting device for polarizers. Background Technology

[0002] Polarizing films have a wide range of applications in optical instruments such as displays. For example, displays require two polarizing films to be closely attached to the liquid crystal glass. Polarizing films need to be cut to size to precisely match the screens of electronic products such as mobile phones, televisions, and laptops.

[0003] Currently, when cutting polarizing film rolls, the unwinding device can only hold one roll at a time. If the rolls are to be split, the narrow width of the rolls leads to a decrease in cutting efficiency. Therefore, this utility model proposes a three-axis unwinding and cutting device for polarizing film that can solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a three-axis unwinding and cutting device for polarizing films to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a three-axis unwinding and cutting device for polarizing film, comprising a frame mounted on a machine base, the frame comprising a first truss and a second truss connected by several crossbars, the first truss and the second truss being spaced apart and forming a receiving area, the receiving area having three sets of air-expanding shafts vertically spaced apart, the three sets of air-expanding shafts being used to sleeve polarizing film rolls, and each set of air-expanding shafts being connected to the first truss and the second truss through a tension adjusting part;

[0006] The tension adjustment unit includes safety chucks rotatably mounted on the first truss and the second truss, a magnetic powder clutch motor mounted on the first truss, and a tension sensor mounted on the machine base. The two sets of safety chucks are used to clamp the air shaft. The magnetic powder clutch motor is drivenly connected to the safety chucks on the first truss. The tension sensor is used to detect the actual tension value of the polarizer, and the tension sensor signal is connected to a controller. The controller signal is connected to the magnetic powder clutch motor.

[0007] As a preferred technical solution, the position of the polarizing film roll sleeved on the air expansion shaft is shifted sequentially from one direction to the other.

[0008] As a preferred technical solution, the machine is also equipped with a control panel, which is connected to the three sets of controller signals. The control panel can input the length value of the polarizing film roll.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] Three rolls can be placed simultaneously when cutting polarizing film, effectively improving cutting efficiency and production capacity. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This utility model has three sets of air expansion shafts.

[0013] In the diagram: 10. Machine base; 20. Stand; 21. Second truss; 22. First truss; 23. Crossbar; 30. Air shaft; 31. Polarizing film roll; 40. Tension adjustment unit; 41. Safety chuck; 42. Magnetic powder clutch motor. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-2

[0016] Example 1 provides a triaxial unwinding and cutting device for polarizing films:

[0017] The support frame 20 is set on the machine base 10. The support frame 20 includes a first truss 22 and a second truss 21 connected by several crossbars 23. The first truss 22 and the second truss 21 are spaced apart and form a receiving area. Several crossbars 23 are connected to the first truss 22 and the second truss 21 by welding. After the welding position is ground, the whole is sprayed with an anti-rust coating.

[0018] Three sets of air expansion shafts 30 are vertically spaced within the containment area. The three sets of air expansion shafts 30 are used to mount polarizing film rolls 31. The air expansion shafts 30 can be inflated to fix the core tube of the polarizing film roll 31. After inflation, the key strip on the surface of the air expansion shaft 30 will protrude and tightly lock the core tube of the polarizing film roll 31. After deflation, it will quickly retract, making it easy to load and unload the roll.

[0019] Each air shaft 30 is connected to the first truss 22 and the second truss 21 through the tension adjustment part 40. During the polarizer cutting process, the tension of the polarizer can be adjusted in real time through the tension adjustment part 40.

[0020] The tension adjustment unit 40 includes a safety chuck 41 rotatably mounted on the first truss 22 and the second truss 21, a magnetic powder clutch motor 42 mounted on the first truss 22, and a tension sensor mounted on the machine base 10. The two sets of safety chucks 41 are used to clamp the air shaft 30. The safety chucks 41 can loosen or clamp the air shaft 30, thereby picking up and putting down the air shaft 30. The magnetic powder clutch motor 42 is connected to the safety chuck 41 on the first truss 22. The tension sensor is not shown in the figure. The tension sensor is used to detect the actual tension value of the polarizer, and the tension sensor signal is connected to the controller. The controller signal is connected to the magnetic powder clutch motor 42.

[0021] During the cutting process, three sets of tension sensors detect the actual tension values ​​of the three sets of polarizers in real time and feed the signals back to the corresponding controllers. The controllers receive the signals from the tension sensors, compare them with the set target tension values, and then output a control signal to the corresponding magnetic powder clutch motor 42 to dynamically adjust its current, thereby stabilizing the tension and dynamically adjusting the resistance to counteract tension fluctuations caused by changes in the diameter and speed of the polarizer roll 31. This provides a stable unwinding environment for high-quality and high-precision cutting of the polarizers, ensuring the accuracy of the cutting length and the flatness of the edges.

[0022] Example 2 provides a triaxial unwinding and cutting device for polarizing films:

[0023] The support frame 20 is set on the machine base 10. The support frame 20 includes a first truss 22 and a second truss 21 connected by several crossbars 23. The first truss 22 and the second truss 21 are spaced apart and form a receiving area. Several crossbars 23 are connected to the first truss 22 and the second truss 21 by welding. After the welding position is ground, the whole is sprayed with an anti-rust coating.

[0024] Three sets of air expansion shafts 30 are vertically spaced within the containment area. The three sets of air expansion shafts 30 are used to mount polarizing film rolls 31. The air expansion shafts 30 can be inflated to fix the core tube of the polarizing film roll 31. After inflation, the key strip on the surface of the air expansion shaft 30 will protrude and tightly lock the core tube of the polarizing film roll 31. After deflation, it will quickly retract, making it easy to load and unload the roll.

[0025] The polarizing film roll 31 mounted on the air expansion shaft 30 shifts in position from one direction to the other. That is, during the cutting process, the polarizing film roll 31 on the air expansion shaft 30 shifts laterally when unwinding, so there will be no interference problem.

[0026] Each air shaft 30 is connected to the first truss 22 and the second truss 21 through the tension adjustment part 40. During the polarizer cutting process, the tension of the polarizer can be adjusted in real time through the tension adjustment part 40.

[0027] The tension adjustment unit 40 includes a safety chuck 41 rotatably mounted on the first truss 22 and the second truss 21, a magnetic powder clutch motor 42 mounted on the first truss 22, and a tension sensor mounted on the machine base 10. The two sets of safety chucks 41 are used to clamp the air shaft 30. The magnetic powder clutch motor 42 is connected to the safety chuck 41 on the first truss 22. The tension sensor is not shown in the figure. The tension sensor is used to detect the actual tension value of the polarizer, and the tension sensor signal is connected to the controller. The controller signal is connected to the magnetic powder clutch motor 42.

[0028] During the cutting process, three sets of tension sensors detect the actual tension values ​​of the three sets of polarizers in real time and feed the signals back to the corresponding controllers. The controllers receive the signals from the tension sensors, compare them with the set target tension values, and then output a control signal to the corresponding magnetic powder clutch motor 42 to dynamically adjust its current, thereby stabilizing the tension and dynamically adjusting the resistance to counteract tension fluctuations caused by changes in the diameter and speed of the polarizer roll 31. This provides a stable unwinding environment for high-quality and high-precision cutting of the polarizers, ensuring the accuracy of the cutting length and the flatness of the edges.

[0029] The machine 10 is also equipped with a control panel, which is connected to three sets of controller signals. The control panel can input the length value of the polarizing film roll 31. By inputting the specific number of meters of the polarizing film roll 31, the tension automatic adjustment program automatically sets the tension value of the magnetic powder clutch motor 42 according to the length value. Combined with the tension sensor, the tension is automatically adjusted in real time according to the change in length during the cutting operation.

[0030] In summary, three rolls can be placed simultaneously when cutting polarizing film, effectively improving cutting efficiency and production capacity.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A triaxial unwinding and cutting device for polarizing film, characterized in that, The system includes a stand (20) mounted on a machine base (10). The stand (20) includes a first truss (22) and a second truss (21) connected by several crossbars (23). The first truss (22) and the second truss (21) are spaced apart and form a receiving area. Three sets of air shafts (30) are vertically spaced in the receiving area. The three sets of air shafts (30) are used to mount polarizing film rolls (31). Each set of air shafts (30) is connected to the first truss (22) and the second truss (21) through a tension adjustment part (40). The tension adjustment unit (40) includes a safety chuck (41) rotatably mounted on the first truss (22) and the second truss (21), a magnetic powder clutch motor (42) mounted on the first truss (22), and a tension sensor mounted on the machine base (10). The two sets of safety chucks (41) are used to clamp the air shaft (30). The magnetic powder clutch motor (42) is connected to the safety chuck (41) on the first truss (22) in a transmission connection. The tension sensor is used to detect the actual tension value of the polarizer, and the tension sensor signal is connected to a controller. The controller signal is connected to the magnetic powder clutch motor (42).

2. The polarizing film triaxial unwinding and cutting device according to claim 1, characterized in that, The position of the polarizing film roll (31) sleeved on the air shaft (30) shifts sequentially from one direction to the other.

3. The polarizer triaxial unwinding and cutting device according to claim 1, characterized in that, The machine (10) is also equipped with a control panel, which is connected to the three sets of controller signals. The control panel can input the length value of the polarizing film roll (31).

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