CN217318650U - Cutting tool and apparatus - Google Patents

Abstract

The application provides a cutting tool and equipment. This cutting tool is including handle of a knife and tool bit that are connected, the tool bit is kept away from the one end of handle of a knife is the cutting edge, the tool bit is including being located the handle of a knife with first surface and second surface between the cutting edge, the cutting edge form in first surface with the minimum distance department on second surface, first surface with one side surface towards the retention in the second surface sets up to follow the plane or the curved surface that cuts the direction extension. The scheme can improve the damage phenomenon of the prism during cutting, and further is beneficial to reducing the frame of the electronic equipment.

Description

Cutting tool and apparatus

Technical Field

The application relates to the technical field of display screen manufacturing, in particular to a cutting tool and equipment.

Background

At present, most mobile phones adopt a Liquid Crystal Display (LCD) with a front shooting hole, but various defects often occur at the position of the front shooting hole. The prism hole is damaged after being extruded by the cutting die in the cutting process, an irrecoverable damaged appearance is formed, after the prism is damaged, the original refraction direction is broken, the light path can form emergent rays in all directions, bright lines can be visually formed, the bright lines are the heaviest near the cutting edge, and the defect is commonly called wifi lines.

SUMMERY OF THE UTILITY MODEL

The application provides a cutting tool and equipment can improve the impaired phenomenon of prism, and then help reducing the frame.

The application provides a cutting tool for cut the display screen, the display screen includes excision part and reservation part, cutting tool is including handle of a knife and the tool bit that is connected, the tool bit is kept away from the one end of handle of a knife is the cutting edge, the tool bit is including being located the handle of a knife with first surface and second surface between the cutting edge, the cutting edge form in the first surface with the minimum distance department on second surface, the first surface with set to along cutting the plane or the curved surface that the direction extends to a side surface that remains in the second surface.

In one embodiment, the tool tip is provided as a sheet-like tool tip, the first surface and a side surface of the second surface facing the remaining portion are provided as flat surfaces extending in the cutting direction, and the first surface and a side surface of the second surface facing the cut-out portion are provided as inclined surfaces inclined opposite to the cutting direction.

In one embodiment, the angle between the first surface and the second surface ranges from 13 ° to 17 °.

In one embodiment, the first surface is angled at 15 ° to the second surface.

In one embodiment, the size of the tool bit ranges from 1.3mm to 1.7mm in the direction from the tool shank to the cutting edge.

In one embodiment, the dimension of the cutting head is 1.5mm in the direction from the shank to the cutting edge.

In one embodiment, the cutter head is cylindrical in shape and hollow inside, one end of the cutter head in the axial direction is connected with the cutter handle, the other end of the cutter head in the axial direction is provided with a cutting edge, the cutter head comprises a first surface and a second surface, the first surface and the second surface extend around the axis of the cutter head, the first surface is an outer surface, the second surface is an inner surface, the radial distance between the outer surface and the axis of the cutter head is equal everywhere in the axial direction of the cutter head, and the outer surface is a cylindrical curved surface.

In one embodiment, the radial distance between the inner surface and the axis of the tool bit increases gradually in the direction of the axis and in the direction from the shank to the cutting edge.

In one embodiment, in an orthographic projection parallel to the axis of the tool bit, the projection of the outermost prime line of the outer surface of the tool bit is a first straight line segment, the first straight line segment is parallel to the axis of the tool bit, the projection of the outermost prime line of the inner surface of the tool bit is a second straight line segment, the second straight line segment is inclined relative to the axis of the tool bit, and the radial distance between the second straight line segment and the axis is smaller as the tool bit is closer to the tool shank.

In one embodiment, the included angle between the first straight line segment and the second straight line segment ranges from 13 degrees to 17 degrees.

In one embodiment, the first linear segment is at an angle of 15 ° to the second linear segment.

In one embodiment, the dimension of the cutter head in the axial direction is 1.3-1.7 mm.

In one embodiment, the dimension of the cutting head in the axial direction is 1.5 mm.

The application provides a cutting apparatus, includes:

the equipment comprises an equipment main body and a cutting head, wherein the cutting head can be lifted; and

the cutting tool of any preceding claim, mounted to the cutting head.

The technical scheme provided by the application can at least achieve the following beneficial effects:

the application provides a cutting tool and equipment, wherein, cutting tool is including first surface and the second surface that is located between handle of a knife and the cutting edge, first surface with one side surface towards the remaining part in the second surface sets up to the plane or the curved surface that extend along cutting direction. That is to say, the side surface towards the remaining part of display screen sets up to the face of straight-up straight down, consequently, when the cutter cuts the display screen along cutting the direction, this surface can not cause the extrusion to the display screen, can reduce or even avoid the display screen to cut the deformation that the in-process produced from this, and then reduce or prevent that the display screen is impaired, ensures that the display screen light path is normal, and is favorable to dwindling electronic equipment's frame.

Drawings

FIG. 1 is a schematic diagram of a prior art cutting tool cutting display;

FIG. 2 is a schematic view of a damaged portion of a cut display screen in the prior art;

FIG. 3 is an optical diagram of a damaged prism of the display screen and an optical diagram of a normal portion;

FIG. 4 is a schematic diagram of a prior art prism damaged portion being blocked by a light-blocking glue;

FIG. 5 is a cross-sectional view of a cutting tool of a sheet-like structure shown in an exemplary embodiment of the present application;

FIG. 6 is a cross-sectional view of a cutting tool in a cylindrical configuration as shown in an exemplary embodiment of the present application;

FIG. 7 is a schematic view of the cutting tool cutting display screen shown in FIG. 6;

FIG. 8 is a half sectional view of the cutting tool shown in FIG. 6;

fig. 9 is a top view of the cutting tool shown in fig. 6.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with aspects of the present application.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. As used in this application, the terms "first," "second," and the like do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Similarly, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one, and if only "a" or "an" is denoted individually. "plurality" or "a number" means two or more. Unless otherwise specified, "front", "back", "lower" and/or "upper", "top", "bottom", and the like are for ease of description only and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

Referring to fig. 1 to 3, the existing cutting tool has an inverted triangle structure, two side surfaces of the cutting tool are inclined toward a side away from each other, when the existing cutting tool is used to cut the display screen, along with the increase of the cutting depth of the blade, two side surfaces of the cutting tool push the prism layer, and the prism layer is damaged and deformed by the extrusion force (refer to fig. 2), so that the refraction direction of the prism light path is changed (refer to fig. 3), thereby generating wifi (wireless fidelity) lines.

Referring to fig. 4, the conventional solution to the above-mentioned drawback is to widen the light-shielding glue to shield the damaged prism, so as to reduce the emission of the irregular emergent light.

Referring to fig. 5 to 7, the present application provides an improved cutting tool 1, and the cutting tool 1 is used for cutting a display screen 2. The cutting tool 1 may be a sheet-like structure as shown in fig. 5, or may be a columnar structure as shown in fig. 6. For example, when needing to cut out the through-hole on display screen 2, can choose for use columnar cutting tool 1, when the edge that needs to cut display screen 2, can choose for use sheet structure's cutting tool 1. The display screen 2 includes a reserved portion 201 and a cut-away portion 202, the reserved portion 201 being a portion remaining after cutting, and the cut-away portion 202 being a portion removed after cutting.

In the embodiment shown in fig. 5 to 7, the cutting tool 1 includes a shank 10 and a cutting head 20 connected to each other, a cutting edge 21 is located at an end of the cutting head 20 away from the shank 10, the cutting head 20 includes a first surface 22 and a second surface 23 located between the shank 10 and the cutting edge 21, the cutting edge 21 is formed at a minimum distance between the first surface 22 and the second surface 23, and a side surface of the first surface 22 and the second surface 23 facing a remaining portion is provided as a plane or a curved surface extending in the cutting direction S.

The cutting tool 1 will be described in detail with reference to specific embodiments.

Referring to fig. 5, fig. 5 is a cross-sectional view of a cutting tool 1 of a sheet structure according to an exemplary embodiment of the present application.

The embodiment of the application provides a cutting tool 1 with a sheet structure, and the cutting tool 1 can be used for trimming. Specifically, the tool bit 20 is a sheet-shaped tool bit, and the first surface 22 and the second surface 23 located between the tool holder 10 and the cutting edge 21 are both flat surfaces, wherein a side surface of the first surface 22 and a side surface of the second surface 23 facing the remaining portion 201 of the display screen 2 are provided as a flat surface extending in the cutting direction S, and a side surface of the first surface 22 and a side surface of the second surface 23 facing the cut-away portion 202 are provided as an inclined surface inclined relative to the cutting direction S. So set up, for example, when first surface 22 of tool bit 20 faces retaining portion 201, because first surface 22 is the straight plane of going straight up and down, consequently in the cutting process, first surface 22 can not cause the extrusion to display screen 2, can reduce the deformation that display screen 2 produced in the cutting process from this, and then reduce or prevent that display screen 2 from damaging, ensures that display screen 2 light path is normal, and is favorable to dwindling the frame of electronic equipment.

In one embodiment, the angle β between the first surface 22 and the second surface 23 ranges from 13 ° to 17 °. For example, the included angle α may be set to 13 °, 13.5 °, 14 °, 14.5 °, 15 °, 15.5 °, 16 °, 16.5 °, 17 °, but is not limited thereto. The angle can reduce the damaged range of the edge of the display screen 2, and can ensure the strength of the cutter head 20 and meet the cutting requirement of the section. In this embodiment, the included angle β between the first surface 22 and the second surface 23 is 15 °. By adopting the angle, the damaged range of the edge of the display screen 2 is reduced from 0.123mm to 0.063 mm.

In one embodiment, the dimension of the cutting head 20 ranges from 1.3mm to 1.7mm in the direction from the shank 10 to the cutting edge 21. The cutting head 20 may be sized to 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7 mm. So can satisfy the cutting demand of deciding display screen 2. In this embodiment, the dimension of the tool tip 20 in the axial direction is 1.5 mm.

It is noted that the side surface of the cutting tool 1 facing the remaining portion 201 may also be provided with other shapes of curved surfaces extending in the cutting direction, such as a concave arc-shaped curved surface, a wave-shaped curved surface, and the like.

Referring to fig. 6 and 7, fig. 6 is a cross-sectional view of a cylindrical cutting tool 1 according to an exemplary embodiment of the present application. Fig. 7 is a schematic view of the cutting tool 1 shown in fig. 6 cutting the display screen 2, wherein the display screen 2 is a microscopic enlarged view.

The embodiment of the application provides a cutting tool 1 with cylindricality structure, cutting tool 1 is used for cutting the through-hole on display screen 2. Specifically, this cutting tool 1 includes handle of a knife 10 and tool bit 20, tool bit 20's appearance is cylindrical, and inside cavity, tool bit 20 along axial one end with handle of a knife 10 is connected, along the axial other end be cutting edge 21. The cutter head 20 is used for cutting the display screen 2, and a circular through hole can be cut on the display screen 2 by using the cutting edge 21.

The cutting insert 20 comprises a first surface 22 and a second surface 23 between the shank 10 and the cutting edge 21, the cutting edge 21 being formed at a minimum distance between the first surface 22 and the second surface 23. In the embodiment shown in fig. 5, the first surface 22 is formed as an outer surface 22 extending around the axis O and the second surface 23 is formed as an inner surface extending around the axis O, wherein the space surrounded by the inner surface is a cavity in the hollow of the cutting head 20. In the direction of the axis O of the cutter head 20, the radial distance between the outer surface and the axis O of the cutter head 20 is equal everywhere, and the outer surface is a cylindrical curved surface. That is, the plain line of the outer surface is a straight line parallel to the axis O, and the outer surface is a cylindrical surface straight up and down.

The cutting direction of the cutting tool 1 is the direction from the shank 10 to the blade 21, i.e. the cutting direction coincides with the direction of the axis O, so that a through hole can be cut in the display 2. When the cutting tool 1 cuts the display screen 2 along the direction parallel to the axis O, the part of the display screen 2 corresponding to the hollow part of the tool bit 20 is cut off, so that a through hole can be formed at the part, and the part of the display screen 2 positioned outside the tool bit 20 is reserved. Because the outer surface of tool bit 20 is towards the excision part, and is the face of cylinder, straight up straight down extends, consequently this surface can not lead to the fact the extrusion to display screen 2 in tool bit 20 footpath, can reduce from this and avoid display screen 2 to cut the deformation that the in-process produced even, and then reduce or prevent that display screen 2 is impaired, ensure that display screen 2 light path is normal, be favorable to dwindling electronic equipment's frame.

In one embodiment, the radial distance between the inner surface and the axis O of the tool tip 20 increases gradually in the direction of the axis O and in the direction pointing from the shank 10 to the cutting edge 21 (S direction in fig. 7). So, the terminal thickness of cutting edge 21 is less, can be so that cutting edge 21 department is sharper, and the effect of cutting edge department is better, and the section of the prism hole department after cutting is more neat.

The shape of the inner surface of the cutting head 20 is not limited by the present application. In one embodiment, in an orthographic projection parallel to the axis O of the tool bit 20, a projection of an outermost prime line of the outer surface of the tool bit 20 is a first straight line segment 220, the first straight line segment 220 is parallel to the axis O of the tool bit 20, a projection of an outermost prime line of the inner surface of the tool bit 20 is a second straight line segment 230, the second straight line segment 230 is inclined relative to the axis O of the tool bit 20, and the radial distance between the second straight line segment 230 and the axis O is smaller as the tool bit is closer to the tool shank 10. In this scheme, the internal surface sets up to the circular conical surface, and the circular conical surface is convenient for on the one hand to process or the shaping, and on the other hand can also increase the thickness of tool bit 20 in the department of being close to handle of a knife 10, guarantees the intensity of tool bit 20 self and the reliability of being connected with handle of a knife 10, prolongs the life of cutting tool 1.

Referring to fig. 8, fig. 8 is a half sectional view of the cutting tool 1 shown in fig. 6.

In one embodiment, the angle α between the first straight line segment 220 and the second straight line segment 230 ranges from 13 ° to 17 °. For example, the included angle α between the first straight line segment 220 and the second straight line segment 230 may be set to 13 °, 13.5 °, 14 °, 14.5 °, 15 °, 15.5 °, 16 °, 16.5 °, 17 °. This angle can make the damaged scope in prism hole edge reduce to can guarantee the intensity of tool bit 20 and satisfy the cutting requirement of prism hole section. In this embodiment, an included angle α between the first straight line segment 220 and the second straight line segment 230 is 15 °. By adopting the angle, the damage range of the edge of the prism hole is reduced, and can be reduced from 0.123mm to 0.063 mm.

The axial dimension of the cutting head 20 can be set with reference to the thickness of the display screen 2. In one embodiment, the dimension L of the cutting head 20 in the axial direction is 1.3-1.7 mm. For example, the axial dimension L of the tool tip 20 may be set to 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7 mm. So can satisfy the cutting demand of deciding display screen 2. In this embodiment, the dimension of the tool tip 20 in the axial direction is 1.5 mm.

The connection mode of the tool shank 10 and the tool bit 20 is not limited. For example, the tool shank 10 and the tool tip 20 may be connected by welding, bolting, or the like. In one embodiment, the tool shank 10 and the tool bit 20 can be integrated, so that the strength of the joint of the tool shank 10 and the tool bit 20 can be increased, and the service life can be prolonged. In one embodiment, the shank 10 is provided with a through hole 101 in a central region thereof, and the through hole 101 communicates with the hollow of the tool tip 20. In one embodiment, the tool tip 20 may be made of a tungsten steel material, but is not limited thereto.

Referring to fig. 9, fig. 9 is a top view of the cutting tool 1 shown in fig. 6.

In one embodiment, the cutting tool 1 further comprises a connecting portion 30 connected to the tool shank 10, the connecting portion 30 being for connection to a cutting device. The present application does not limit the specific structure of the connection portion 30.

In this embodiment, the connecting portion 30 may be a rod, and both ends of the connecting portion 30 are connected to the tool shank 10 and connected to a side surface 102 of the tool shank 10 facing away from the tool bit 20, and the connecting manner includes, but is not limited to, bolting and welding. In the embodiment shown in fig. 9, the surface is an annular surface, and a connecting structure 31 can be arranged at the position of the connecting part 30 opposite to the through hole 101, and the connecting structure 31 can be used for connecting with the cutting device. The connecting structure 31 may be provided as a connecting hole or a connecting column.

The present application also provides a display screen cutting apparatus (not shown) comprising an apparatus body and a cutting tool 1 as described above. The cutting equipment comprises a cutting head capable of ascending and descending, wherein a cutting tool 1 is installed on the cutting head of the cutting equipment and ascends and descends along with the ascending and descending of the cutting head, in the descending process, a cutting edge 21 of the cutting tool 1 can be in contact with a display screen 2, and a prism hole is cut on the display screen 2. In one embodiment, the speed of the liftable cutting head can be set to 0.5mm/s to 1.8 mm/s.

Referring to table 1, table 1 shows a comparison table of the percent of pass of the product cut by the original cutting tool and the cutting tool 1 provided in the present application.

TABLE 1

As can be seen from Table 1, in the display screen processed by the original cutting tool, the proportion in the wifi grain-free and wifi grain limit sample standard is 60.5% and 26% respectively, in the display screen processed by the cutting tool, the proportion in the wifi grain-free and wifi grain limit sample standard is 72% and 27% respectively, and the qualification rate is improved.

Further, the defect rate of a product processed by the original cutting tool in a wifi line limit sample with the standard of JND2.2 is 13.5%, and the defect rate of the product processed by the original cutting tool in the wifi line limit sample with the standard of JND2.3 is 2.5%; the product processed by the cutting tool has the defect rate of 1% in the wifi line limit sample with the standard of JND2.2 and the defect rate of 0% in the wifi line limit sample with the standard of JND2.3, and the defect rate is reduced compared with the product processed by the original cutting tool.

In addition, by adopting the cutting tool 1, the damage range of the edge of the prism hole or the display screen is reduced, for example, the damage range can be reduced from 0.123mm to 0.063mm, and the width of the light shading glue can be smaller, thereby being beneficial to the reduction of the front camera hole.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.

Claims (14)

1. The utility model provides a cutting tool for cut the display screen, the display screen includes excision part and remains the part, its characterized in that, cutting tool is including handle of a knife and the tool bit that is connected, the tool bit is kept away from the one end of handle of a knife is the cutting edge, the tool bit including be located the handle of a knife with first surface and second surface between the cutting edge, the cutting edge form in first surface with the minimum distance department of second surface, first surface with a side surface towards the part that remains in the second surface sets up to follow the plane or the curved surface that cuts the direction and extend.

2. The cutting tool according to claim 1, wherein the tool bit is provided as a sheet-like tool bit, a side surface of the first surface and the second surface facing the remaining portion is provided as a flat surface extending in the cutting direction, and a side surface of the first surface and the second surface facing the cut-off portion is provided as an inclined surface inclined opposite to the cutting direction.

3. The cutting tool of claim 2, wherein the included angle between the first surface and the second surface ranges from 13 ° to 17 °.

4. The cutting tool of claim 3, wherein the first surface is angled 15 ° from the second surface.

5. The cutting tool according to any one of claims 1 to 4, wherein the dimension of the cutting head in a direction from the shank towards the cutting edge has a value in the range of 1.3 to 1.7 mm.

6. The cutting tool of claim 5, wherein the dimension of the cutting head is 1.5mm in a direction from the shank toward the cutting edge.

7. The cutting tool of claim 1, wherein the cutting head is cylindrical in shape and hollow in its interior, one end of the cutting head in the axial direction is connected to the shank, the other end in the axial direction is a cutting edge, the cutting head includes a first surface and a second surface extending around the axis of the cutting head, the first surface is an outer surface, the second surface is an inner surface, the radial distance between the outer surface and the axis of the cutting head in the axial direction of the cutting head is equal everywhere, and the outer surface is a cylindrically curved surface.

8. The cutting tool of claim 7 wherein a radial distance between the inner surface and the axis of the tool bit increases in a direction along the axis and directed from the shank toward the cutting edge.

9. The cutting tool of claim 8 wherein in an orthographic projection parallel to the axis of the tool bit, the projection of the outermost tangent of the outer surface of the tool bit is a first straight segment parallel to the axis of the tool bit and the projection of the outermost tangent of the inner surface of the tool bit is a second straight segment that is oblique to the axis of the tool bit and that is radially closer to the tool shank the smaller the second straight segment is from the axis.

10. The cutting tool of claim 9, wherein the angle between the first and second straight segments ranges from 13 ° to 17 °.

11. The cutting tool of claim 10, wherein the first linear segment is angled 15 ° from the second linear segment.

12. The cutting tool according to any one of claims 7 to 11, wherein the dimension of the cutting head in the axial direction has a value in the range of 1.3 to 1.7 mm.

13. The cutting tool of claim 12, wherein the dimension of the cutting head in the axial direction is 1.5 mm.

14. A cutting apparatus, comprising:

the equipment comprises an equipment main body and a lifting cutting head; and

the cutting tool of any one of claims 1 to 13, mounted to the cutting head.

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