Cutting tool on light guide plate production line

Abstract

The utility model discloses a cut-off tool on a light guide plate production line, which comprises a tool body for cutting off a light guide plate, one end of the tool body is provided with a blade part for cutting and a cutting plane for cutting, the cutting plane is vertical to the light guide plate, a cutting edge is formed at an included angle on the blade part, the cutting edge is an acute angle, and the cutting plane is provided with a cutting edge. The light guide plate cutting device has the advantages that when the light guide plate is cut to cut off residues outside the light guide plate, the risk that a tool nose of a tool is broken or the light guide plate is broken is reduced, particularly when a glass light guide plate with high brittleness is cut, the light guide plate is prevented from being broken, and the yield of the light guide plate is improved.

Description

Technical Field

[0001] The utility model relates to the field of cutting tools, and more particularly to a cutting tool on a light guide plate production line. Background Art

[0002] With the rapid development of the optical industry, light guide plates, as an important optical component, have been widely used in LED lighting, liquid crystal displays, flat-panel TVs and other fields. The quality of light guide plates directly affects the optical performance and display effects of the final product. Therefore, in the production process of light guide plates, efficient and accurate cutting operations are a key technical link.

[0003] Traditional cutting tools, such as rough carbon steel knives or ordinary tungsten steel knives, are difficult to ensure high-precision cutting effects when cutting off excess residual materials around the outer edges of the light guide plate, and are prone to causing scratches, burrs and other defects on the surface of the light guide plate during the cutting process.

[0004] The utility model patent with application number 201621075328.0 discloses a superhard knife for cutting chips and light guide plates, including a superhard knife body and a cutting edge. The cutting edge is arranged on the superhard knife body, and the two are an integrated structure. The cutting edge includes a symmetrical part and an asymmetrical part. The symmetrical part is arranged at the upper end of the superhard knife body, and the asymmetrical part is arranged at the upper end of the symmetrical part. The three are an integrated structure. In the above technical solution, different angles are designed according to the product object, and symmetrical angles and asymmetrical angles are designed to prevent the chip from being beveled, so that the cutting surface of the product after cutting is free of scratches, burrs, and other defects.

[0005] Although the super-hard knife in the existing technology has high hardness, there is a risk of the tip of the tool breaking or the light guide plate breaking when cutting the outer residual material of the light guide plate. In particular, glass light guide plates often show strong brittleness due to the special nature of their material. The light guide plate is easily broken due to the impact force it is subjected to during the cutting process, thereby reducing the yield rate of the light guide plate. Utility Model Content

[0006] In view of the deficiencies in the prior art, the present invention aims to provide a cutting tool for a light guide plate production line.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] A cutting tool for a light guide plate production line includes a knife body for cutting the light guide plate. One end of the knife body has a blade for cutting and a cutting plane for cutting. The cutting plane is perpendicular to the light guide plate. The angle on the blade constitutes a cutting edge, and the cutting edge is at an acute angle.

[0009] It is further configured that the cutting edge extends to both sides of the cutting portion and is provided with an inclined cutting surface 1 and a cutting surface 2, both side lines of the cutting surface 1 constitute a first connecting angle, and both side lines of the cutting surface 2 constitute a second connecting angle.

[0010] It is further configured that there is a transition surface between the first cutting surface and the second cutting surface, and the side lines of the transition surface converge towards the cutting edge.

[0011] It is further configured that the angle of the first connection angle is 8-15 degrees, the angle of the second connection angle is 10-18 degrees, the side lines on both sides of the transition surface form a transition angle, and the angle of the transition angle is 10 degrees.

[0012] It is further configured that the first cutting surface, the transition surface and the second cutting surface are connected in sequence, and the first cutting surface, the transition surface and the second cutting surface are gradually inclined toward the horizontal edge line of the cutting edge.

[0013] It is further configured that the other end of the blade body has a mounting portion, and the mounting portion includes a first notch and a second notch.

[0014] By adopting the above technical solution, the beneficial effect of the utility model is: when cutting the light guide plate and removing the outer residual material, the risk of the tool tip breaking or the light guide plate breaking is reduced, especially when cutting a glass light guide plate that shows strong brittleness, the light guide plate is avoided from breaking and the light guide plate yield is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Fig. 1 It is a structural schematic diagram of an embodiment of the present utility model.

[0016] Fig. 2 This is the main view of the knife body.

[0017] Fig. 3 A top view of the blade body.

[0018] Fig. 4 This is the left side view of the cutter body.

[0019] In the figure: blade body 1, blade 2, cutting plane 3, cutting edge 4, cutting surface 1 5, cutting surface 2 6, first connecting angle 51, second connecting angle 61, transition surface 7, transition angle 71, mounting portion 8, first notch 801, second notch 802. DETAILED DESCRIPTION

[0020] Reference Figs. 1 to 4 The embodiments of the present invention are further described.

[0021] A cutting tool for a light guide plate production line includes a blade 1 for cutting the light guide plate. The blade 1 is made of a cemented carbide material. One end of the blade 1 has a blade portion 2 for cutting and a cutting plane 3 for cutting. The cutting plane 3 is perpendicular to the light guide plate and corresponds to one side of the light guide plate. The angle on the blade portion 2 constitutes a cutting edge 4. The cutting edge 4 is at an acute angle. When the blade 1 cuts the light guide plate, the impact of the light guide plate on the cutting edge 4 is reduced, thereby reducing the risk of damage to the blade body 1. The cutting edge 4 extends to both sides of the blade portion 2 and is provided with a cutting surface 1 5 and a cutting surface 2 6, both of which are inclined. The cutting surface 1 5 and the cutting surface 2 6 correspond to the edge material to be cut off on the other side of the light guide plate. The side lines of the cutting surface 1 5 constitute a first connection angle 51, and the side lines of the cutting surface 2 6 constitute a second connection angle 61.

[0022] Working principle: When cutting the light guide plate, the blade body 1 contacts the light guide plate to cut the light guide plate. During this cutting process, the cutting plane 3 is perpendicular to the light guide plate, so that the cutting edge 4 on the blade body 1 cuts the light guide plate vertically, so that the cut on the cut light guide plate is flat and smooth, and the vertical cutting can reduce the problem of light guide plate breakage caused by improper cutting angles, protect the integrity and aesthetics of the light guide plate, and improve the yield rate of the light guide plate. Since the cutting surface 1 5 and the cutting surface 2 6 correspond to the edge material to be cut off on the other side of the light guide plate, there is no need to consider whether the cut light guide plate edge material will break, and The inclined cutting surface 1 5 and the inclined cutting surface 2 6 enable the blade 1 to effectively disperse the cutting force, making it easier for the blade 1 to cut into the light guide plate and reducing the risk of the blade 1 breaking. At the same time, the inclined cutting surface 1 5 and the inclined cutting surface 2 6 help to remove chips when the blade 1 cuts the light guide plate. The size of the first connection angle 51 and the second connection angle 61 will affect the cutting force of the blade, and ultimately reduce the risk of the cutting edge 4 breaking or the light guide plate breaking when cutting off the outer residual material of the light guide plate, especially when cutting a glass light guide plate that exhibits strong brittleness, thereby avoiding the breakage of the light guide plate and improving the yield rate of the light guide plate.

[0023] There is a transition surface 7 between cutting surface 1 5 and cutting surface 2 6. Cutting surface 1 5, transition surface 7 and cutting surface 2 6 are connected in sequence, and cutting surface 1 5, transition surface 7 and cutting surface 2 6 gradually tilt toward the horizontal edge of the cutting edge 4, so that the blade 2 gradually and smoothly tilts toward the horizontal edge of the cutting edge 4, reducing the resistance of the blade 2, thereby reducing the impact force of the blade 2 during the cutting process of the blade body 1, which is beneficial to reducing the risk of damage to the blade body 1. The side edges of the transition surface 7 converge toward the cutting edge 4, the angle of the first connection angle 51 is 8-15 degrees, the angle of the second connection angle 61 is 10-18 degrees, and the side edges of the transition surface 7 form a transition angle 71, and the angle of the transition angle 71 is 10 degrees.

[0024] The setting of the transition surface 7 reduces the area of ​​the cutting surface 1 5 and the cutting surface 2 6, thereby reducing the first connection angle 51 and the second connection angle 61, and at the same time increasing the number of inclined surfaces on the blade 2 is conducive to better dispersion of the cutting force. The smaller first connection angle 51 and the second connection angle 61 are conducive to reducing the cutting force, making the cutting process easier, but too small the first connection angle 51 and the second connection angle 61 will affect the strength of the blade 2. The angle of the first connection angle 51 is 8-15 degrees, the angle of the second connection angle 61 is 10-18 degrees, and the angle of the transition angle 71 is 10 degrees, which is conducive to reducing the cutting force while maintaining the strength of the blade 2.

[0025] The other end of the blade body 1 has a mounting portion 8 for facilitating installation of the blade body 1 . The mounting portion 8 includes a first notch 801 and a second notch 802 , which facilitates more stable installation of the blade body 1 .

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A cutting tool for a light guide plate production line, characterized in that: The invention comprises a knife body (1) for cutting a light guide plate, wherein one end of the knife body (1) has a blade portion (2) for cutting and a cutting plane (3) for cutting, wherein the cutting plane (3) is perpendicular to the light guide plate, and an angle on the blade portion (2) forms a cutting edge (4), and the cutting edge (4) is at an acute angle.

2. The cutting tool for a light guide plate production line according to claim 1, characterized in that: The cutting edge (4) extends to both sides of the cutting portion (2) and is provided with a first cutting surface (5) and a second cutting surface (6) both of which are inclined. The side lines of the first cutting surface (5) form a first connecting angle (51), and the side lines of the second cutting surface (6) form a second connecting angle (61).

3. The cutting tool for a light guide plate production line according to claim 2, characterized in that: There is a transition surface (7) between the cutting surface 1 (5) and the cutting surface 2 (6), and the side lines of the transition surface (7) converge towards the cutting edge (4).

4. The cutting tool for a light guide plate production line according to claim 3, characterized in that: The first connection angle (51) is 8-15 degrees, the second connection angle (61) is 10-18 degrees, and the side lines of the transition surface (7) form a transition angle (71), and the transition angle (71) is 10 degrees.

5. The cutting tool for a light guide plate production line according to claim 4, characterized in that: The cutting surface 1 (5), the transition surface (7) and the cutting surface 2 (6) are connected in sequence, and the cutting surface 1 (5), the transition surface (7) and the cutting surface 2 (6) are gradually inclined toward the horizontal edge of the cutting edge (4).

6. The cutting tool for a light guide plate production line according to claim 5, characterized in that: The other end of the blade body (1) has a mounting portion (8), and the mounting portion (8) comprises a first notch (801) and a second notch (802).

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