Cutting die for punching optical film

Abstract

The utility model relates to the technical field of optical film processing, in particular to a cutting die for punching an optical film. The carrier comprises a carrier body, a connecting groove is formed in the top of the carrier body, a positioning bearing assembly used for containing a diaphragm is arranged in an inner cavity of the connecting groove, a protection assembly is arranged in an inner cavity of the positioning bearing assembly, the positioning bearing assembly and the protection assembly form a whole, and the protection assembly comprises an insert arranged in the inner cavity of the positioning bearing assembly. A protection groove is formed in the surface of the insert. Through adaptive installation of the connecting groove in the top of the carrier body and the positioning bearing assembly and multi-direction accurate positioning of the optical film by the positioning bearing assembly, position deviation of the film due to external force in the punching process is effectively prevented, it is guaranteed that the film is located at the preset punching position all the time, and the punching efficiency is improved. The protection groove in the surface of the insert in the protection assembly plays a buffering role in cutting die punching, the direct extrusion force of the cutting die on the diaphragm is reduced, and the risk that the diaphragm is damaged due to excessive extrusion is avoided.

Description

Technical Field

[0001] This utility model relates to the field of optical film processing technology, and more specifically, to a die for punching optical films. Background Technology

[0002] Optical films are widely used in the field of optics. For example, polarizing films are an indispensable component in liquid crystal displays (LCDs) and organic light-emitting diode displays (OLEDs). They can convert natural light into polarized light, control the direction of light transmission, effectively improve the contrast and clarity of the displayed image, make the image colors more vivid and the layers more distinct, and bring users a high-quality visual experience. Brightness enhancement films improve the light utilization rate of the backlight, enhance screen brightness, reduce energy consumption, and improve the overall performance of display devices by reflecting and refracting light.

[0003] In the field of modern optical product manufacturing, optical films are key components, and the precision and quality of their punching process play a decisive role in the performance of the final product. Before the punching equipment is started, the operator first carefully places the optical film on the pad, ensuring that the edge or specific position of the film precisely matches the positioning structure of the pad. After the punching equipment is started, the operator performs fine adjustments to the equipment based on parameters such as the material, thickness, and predetermined punching shape of the optical film. After the adjustments are completed and confirmed to be correct, the equipment controls the punching cutter to move along the preset path toward the optical film placed on the pad to punch the film.

[0004] Considering that when the die cutter cuts the optical film placed on the surface of the pad, the die first contacts the film and then performs the punching operation according to the preset path, since the optical film is thin and light, the impact and friction generated when the surface of the die touches the film can easily cause slight displacement of the film. Even if the displacement is small, it is very likely to cause the dimensional deviation of the film after punching under the condition of strict requirements for the punching accuracy of the film. Utility Model Content

[0005] The purpose of this invention is to solve the problem that when a die cuts a thin optical film placed on a pad, the film is extremely light, and the impact and friction generated when the die touches it can easily cause slight displacement of the film. This can lead to dimensional deviations of the film under high cutting precision requirements.

[0006] To achieve the above objectives, this utility model provides a die for punching optical films, including a carrier body, a connecting groove on the top of the carrier body, a positioning and bearing component for placing the film in the inner cavity of the connecting groove, and a protective component in the inner cavity of the positioning and bearing component, so that they form a whole.

[0007] The protective component includes an insert disposed in the inner cavity of the positioning and bearing component, and the surface of the insert is provided with a protective groove;

[0008] The positioning and bearing component positions the diaphragm placed on it. When the die moves downward to punch, the protective groove contacts the die first, so that the protective groove can buffer the impact force applied by the die and reduce the direct squeezing force of the die on the diaphragm.

[0009] As a further improvement to this technical solution, the positioning and bearing component includes a pad fitted into the inner cavity of the connecting groove, and a linear frame is fixedly connected to the top of the pad.

[0010] The pad is made of linden wood and is used to cushion the impact force on the diaphragm.

[0011] The pad has positioning holes on its surface, and the pad is fixed in the inner cavity of the connecting groove by bolts.

[0012] By using bolts to pass through the positioning holes and fix the pad in the inner cavity of the connecting groove, the vibration generated by the die when processing the diaphragm on the surface of the pad is prevented from causing the pad to move. In addition, the linden wood material used for the pad can absorb and buffer part of the impact force generated by the die punching, reducing the impact force directly transmitted to the diaphragm.

[0013] As a further improvement to this technical solution, the surface of the pad is provided with a groove, and the inner wall of the groove is in contact with the surface of the insert.

[0014] Because the insert is securely installed in the groove, the insert and the pad form a whole, allowing the insert to remain stable with the support of the pad when bearing the impact force of the die.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] In this die for punching optical films, the matching installation of the connecting groove on the top of the carrier body and the positioning and bearing component, as well as the precise multi-directional positioning of the optical film by the positioning and bearing component, effectively prevents the film from shifting due to external forces during the punching process, ensuring that the film is always in the preset punching position. The protective groove on the surface of the insert in the protective component plays a buffering role during the die punching process, reducing the direct extrusion force of the die on the film and avoiding the risk of damage to the film due to excessive extrusion. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the connecting groove structure of this utility model;

[0019] Figure 3This is a schematic diagram of the protective component structure of this utility model;

[0020] Figure 4 This is an enlarged structural diagram of point A in this utility model;

[0021] The meanings of the labels in the diagram are as follows:

[0022] 1. Vehicle body; 10. Connecting slot;

[0023] 2. Positioning and bearing components; 21. Pad; 210. Linear frame; 22. Positioning holes; 23. Groove;

[0024] 3. Protective components; 31. Insert; 310. Protective groove; Detailed Implementation

[0025] 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.

[0026] Example

[0027] Please see Figures 1-4 As shown, this embodiment provides a die for punching optical films, including a carrier body 1. A connecting groove 10 is provided on the top of the carrier body 1. A positioning and bearing assembly 2 for placing films is provided in the inner cavity of the connecting groove 10. A protective assembly 3 is provided in the inner cavity of the positioning and bearing assembly 2, so that they form a whole.

[0028] The protective component 3 includes an insert 31 disposed in the inner cavity of the positioning and bearing component 2, and a protective groove 310 is provided on the surface of the insert 31;

[0029] First, the diaphragm is placed on the surface of the positioning support component 2. At this time, the insert 31 is firmly locked in the inner cavity of the positioning support component 2. When the die begins to move downward to perform the punching operation, the die will first contact the inner cavity of the protective groove 310, and then further contact the surface of the carrier body 1. At this time, the die accurately punches the diaphragm on the surface of the positioning support component 2 according to the preset path. At the moment of the die punching, the protective groove 310 can buffer the impact force applied by the die, reduce the direct compression of the diaphragm by the die, and thus greatly reduce the risk of the diaphragm being over-compressed or damaged.

[0030] The improvement in this embodiment is as follows:

[0031] Considering that when the die cutter cuts the optical film placed on the pad surface, the die first contacts the film and then performs the punching operation according to the preset path. Since the optical film is thin and light, the impact and friction generated when the die surface touches the film can easily cause slight displacement of the film. Even if the displacement is small, it can still lead to dimensional deviation of the film after punching under strict requirements for the punching accuracy. Therefore, by adapting the connecting groove 10 at the top of the carrier body 1 to the positioning and bearing component 2, and by accurately positioning the optical film in multiple directions by the positioning and bearing component 2, the position of the film is effectively prevented from shifting due to external force during the punching process, ensuring that the film is always in the preset punching position. The protective groove 310 on the surface of the insert 31 in the protective component 3 plays a buffering role during the die punching, reducing the direct squeezing force of the die on the film and avoiding the risk of damage to the film due to excessive squeezing.

[0032] In order for the positioning and bearing assembly 2 to position and support the diaphragm, it is necessary to further disclose the parts of the positioning and bearing assembly 2. Therefore, the positioning and bearing assembly 2 includes a pad 21 fitted into the inner cavity of the connecting groove 10, and a linear frame 210 is fixedly connected to the top of the pad 21.

[0033] At the top of the pad 21, a line frame 210 is fixedly connected. Compared with the traditional groove design used for positioning, the line frame 210 has achieved a significant improvement in positioning accuracy. After long-term use, the traditional groove may cause the positioning edge to become blurred and the size to change slightly due to wear and other factors, affecting the positioning accuracy. However, the line frame 210 is made with precision machining technology, with clear line edges and extremely high dimensional accuracy.

[0034] When placing the optical film, the edge of the film can be directly aligned with the line frame 210, and the film can be positioned and constrained from multiple directions. Compared with the groove, which can only limit the position from a specific direction, the line frame 210 can provide a more comprehensive and precise positioning for the film.

[0035] The pad 21 is made of basswood and is used to cushion the impact force on the diaphragm;

[0036] When the die cuts downwards, it generates a large impact force. Linden wood has a certain degree of elasticity, which can absorb and buffer part of the impact force generated by the die cutting, reducing the impact force directly transmitted to the diaphragm, avoiding damage to the diaphragm due to excessive instantaneous impact force, and protecting the integrity and optical performance of the diaphragm.

[0037] In order to fix the pad 21 in the inner cavity of the connecting groove 10, a positioning hole 22 is provided on the surface of the pad 21. The positioning hole 22 is used to fix the pad 21 in the inner cavity of the connecting groove 10 by means of bolts. First, after the pad 21 is fitted into the inner cavity of the connecting groove 10 and aligned, bolts are used to pass through the positioning hole 22 and fix the pad 21 in the inner cavity of the connecting groove 10 to prevent the pad 21 from moving due to the vibration generated by the die when processing the film on the surface of the pad 21.

[0038] In order for the positioning and bearing component 2 to be connected to the insert 31, the installation position of the insert 31 needs to be disclosed. Therefore, a groove 23 is provided on the surface of the pad 21, and the inner wall of the groove 23 contacts the surface of the insert 31. When the die starts to move downward to perform the punching operation, the die will first contact the inner cavity of the protective groove 310 on the surface of the insert 31. Since the insert 31 is firmly installed in the groove 23, the insert 31 and the pad 21 form a whole, so that the insert 31 can remain stable with the support of the pad 21 during the process of bearing the impact force of the die.

[0039] In practical use, the die for punching optical films of this utility model first aligns the edge of the film directly with the inner edge of the line frame 210, so that the line frame 210 positions and constrains the film from multiple directions. Then, when the die starts to move downward to perform the punching operation, the die first contacts the inner cavity of the protective groove 310, and then further contacts the surface of the carrier body 1, and then punches the film on the surface of the pad 21.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A die for punching optical films, comprising a carrier body (1), characterized in that: The top of the carrier body (1) is provided with a connecting groove (10), and the inner cavity of the connecting groove (10) is provided with a positioning and bearing assembly (2) for placing the diaphragm. The inner cavity of the positioning and bearing assembly (2) is provided with a protective assembly (3) to form a whole. The protective component (3) includes an insert (31) disposed in the inner cavity of the positioning and bearing component (2), and the surface of the insert (31) is provided with a protective groove (310).

2. The optical die cutter of claim 1, wherein: The positioning and bearing component (2) includes a pad (21) fitted into the inner cavity of the connecting groove (10), and a linear frame (210) is fixedly connected to the top of the pad (21).

3. The optical die cutter of claim 2, wherein: The pad (21) is made of linden wood and is used to buffer the impact force on the diaphragm.

4. The optical die cutter of claim 3, wherein: The pad (21) has a positioning hole (22) on its surface, and the positioning hole (22) is used to fix the pad (21) in the inner cavity of the connecting groove (10) by means of bolts.

5. The optical die cutter of claim 2, wherein: The surface of the pad (21) is provided with a groove (23), and the inner wall of the groove (23) is in contact with the surface of the insert (31).

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