Cutting blade

Abstract

The utility model relates to a cutting blade, which comprises a cutting part formed at the top, the cutting part comprises a plurality of continuously arranged cutter teeth and a cutter edge which is formed at the top edge of a first side surface and extends along the plurality of cutter teeth, and each cutter tooth obliquely extends downwards from the first side surface to a second side surface. Each cutter tooth comprises a cutter peak section and two cutter arc sections connected to the two opposite ends of the cutter peak section respectively, the cutter arc sections of every two adjacent cutter teeth are connected to form a groove, the cutter peak section of each cutter tooth is a gradually-changed arc surface, and the width of the cutter peak section of each cutter tooth is gradually reduced from the first side face to the second side face. In the process that the adhesive tape is gradually pressed downwards, the cutter peak section is gradually narrowed, the adhesive tape can be easily cut off in a labor-saving mode, and the section of the adhesive tape can be flat.

Description

Technical Field

[0001] This utility model relates to a cutting blade, and more particularly to a cutting blade that can more easily cut tape. Background Technology

[0002] Existing cutting blades, especially those used for cutting tape, mainly have serrated edges formed on the edge of the cutting blade and extending continuously; the cutting blade is usually mounted on a cutting table and the cutting edge protrudes from the cutting table.

[0003] When cutting tape, the user lays the tape to the appropriate length and presses it against the blade. The tape will first be pierced by the protruding teeth on the blade. As the tape is pressed down, the cut made by the teeth is enlarged, and the tape is cut.

[0004] However, because the width of the cutting teeth gradually increases proportionally with the cutting depth, the resistance gradually increases as the tape is pressed down. In order to tear apart the tape that has not been completely cut, the user usually has to apply more force, which not only easily causes the tape to tear or break, resulting in an irregular and rough cross-section, but also makes the user's cutting operation more laborious, affecting the user experience. Utility Model Content

[0005] Because the cut surface of tape is rough and uneven when using existing cutting blades, and the cutting operation is more laborious for users, the main purpose of this utility model is to provide a cutting blade that can cut tape more easily and with less effort.

[0006] To achieve the above objectives, the cutting blade provided by this utility model comprises:

[0007] First side view;

[0008] A second side surface, which, along with the first side surface, is located on opposite sides of the cutting blade; and

[0009] A cutting section is formed at the top of the cutting blade. The cutting section includes a plurality of continuously arranged cutting teeth and a cutting edge formed at the top edge of the first side surface and extending along the plurality of cutting teeth. Each cutting tooth extends obliquely downward from the first side surface toward the second side surface and includes a cutting peak segment and two cutting arc segments respectively connected to opposite ends of the cutting peak segment. The cutting arc segments of two adjacent cutting teeth connect to form a concave valley, and the cutting peak segment of each cutting tooth is a gradually changing arc surface. The width of the cutting peak segment of each cutting tooth gradually decreases from the first side surface toward the second side surface. The vertical height of each cutting tooth between the top and bottom ends of the first side surface ranges from 0.05 mm to 0.4 mm.

[0010] In one embodiment, each of the valleys forms a downwardly concave arc surface.

[0011] In one embodiment, the vertical height of the cutting edge segment of each of the cutting teeth between the top edge of the first side and the top edge of the second side is less than or equal to the vertical height of each of the cutting teeth between the top and bottom of the first side.

[0012] In one embodiment, the height difference of the cutting edge segment of the cutting tooth from the first side to the second side is equal to the height difference of each of the concave valleys from the first side to the second side.

[0013] In one embodiment, the blade tip segment of each of the blades includes a steep slope segment and a gentle slope segment. The steep slope segment extends downward at an angle from the first side to the second side, and the gentle slope segment is formed between the steep slope segment and the second side, and the slope of the gentle slope segment is less than the slope of the steep slope segment.

[0014] In one embodiment, the distance between the center points of the blade tip segments of two adjacent blades is 0.4 mm to 0.8 mm.

[0015] Utilizing the aforementioned technical features, since the blade tip of each tooth is a gradually decreasing arc surface with a width that gradually decreases from the first side to the second side, the blade tip gradually narrows as the tape is pressed down. This improves upon the problem of existing cutting blades where resistance gradually increases during tape pressing, allowing the tape to be pressed down smoothly and cutting it more easily and effortlessly. It eliminates the need to increase tension at the moment of cutting the tape and results in a smoother tape cross-section. Attached Figure Description

[0016] Figure 1 This is a perspective view of a preferred embodiment of the present invention.

[0017] Figure 2 for Figure 1 Enlarged view of part A.

[0018] Figure 3 This is a front view of a preferred embodiment of the present invention.

[0019] Figure 4 for Figure 3 Enlarged view of part B.

[0020] Figure 5 For along Figure 4 A partially enlarged cross-sectional side view of the CC section line.

[0021] Figure 6 For along Figure 4 A partially enlarged cross-sectional side view of the DD section line. Detailed Implementation

[0022] The following, in conjunction with the accompanying drawings and preferred embodiments of the present invention, further illustrates the technical means adopted by the present invention to achieve its intended purpose.

[0023] Please refer to Figures 1 to 6 A preferred embodiment of the cutting blade of this utility model includes a first side surface 11, a second side surface 12, and a cutting portion 20. The first side surface 11 and the second side surface 12 are respectively located on opposite sides of the cutting blade, and the cutting portion 20 is formed on the top of the cutting blade.

[0024] The cutting section 20 includes a plurality of continuously arranged cutting teeth 23 and a cutting edge 21 formed on the top edge of the first side surface and extending along the plurality of cutting teeth 23. Each cutting tooth 23 includes a cutting peak segment 231 and two cutting arc segments 235 respectively connected to opposite ends of the cutting peak segment 231. The cutting arc segments 235 of two adjacent cutting teeth 23 connect to form a concave valley 24. Each cutting arc segment 235 is inclined downward and concave in an arc shape, so that each concave valley 24 forms a downward concave arc surface.

[0025] Each cutting tooth 23 extends downward from the first side 11 toward the second side 12, and forms the edge line of the cutting edge 21 on the first side 11. The cutting edge segment 231 of each cutting tooth 23 is a gradually changing arc surface, and its width gradually decreases from the first side 11 toward the second side 12.

[0026] The vertical height H1 of each cutting tooth 23 between the top and bottom of the first side surface 11 ranges from 0.05 mm to 0.4 mm, with a preferred range of 0.15 mm to 0.35 mm. The top of each cutting tooth 23 is located at the top edge of the cutting edge segment 231 of each cutting tooth 23, and the bottom of each cutting tooth 23 is located at the junction of the cutting arc segment 235 of each cutting tooth 23 and the adjacent cutting arc segment 235, that is, the bottom edge of the concave valley 24. The distance P between the center points of the cutting edge segments 231 of two adjacent cutting teeth 23 ranges from 0.4 mm to 0.8 mm, with a preferred range of 0.45 mm to 0.6 mm.

[0027] Preferably, the vertical height H2 of the cutting edge segment 231 of each cutting tooth 23 between the top edge of the first side surface 11 and the top edge of the second side surface 12 is less than or equal to the vertical height H1 of each cutting tooth 23 between the top and bottom of the first side surface 11. That is, the top edge of each cutting edge segment 231 of the second side surface 12 is not lower than the bottom edge of each concave valley 24 of the first side surface 11.

[0028] The thickness T of the cutting blade, that is, the distance between the first side 11 and the second side 12, is 0.15 mm to 0.4 mm, preferably 0.2 mm; the angle α1 between the top edge of the blade tip 231 of each tooth 23 extending obliquely from the first side 11 toward the second side 12 and the first side 11 is equal to the angle α2 between the bottom edge of the valley 24 extending obliquely from the first side 11 toward the second side 12 and the first side 11, that is, the height difference between each blade tip 231 from the first side 11 to the second side 12 is equal to the height difference between each valley 24 from the first side 11 to the second side 12.

[0029] Furthermore, each blade section 231 includes a steep slope section 232 and a gentle slope section 233. The steep slope section 232 extends downward from the first side 11 toward the second side 12. The gentle slope section 233 is formed between the steep slope section 232 and the second side 12, and the slope of the gentle slope section 233 is less than the slope of the steep slope section 232. The tape can be supported by the gentle slope section 233, and the gentle slope section 233 can be close to horizontal.

[0030] Utilizing the aforementioned technical features, since the blade tip 231 of each blade 23 is a gradually narrowing arc surface that gradually narrows from the first side 11 to the second side 12, as the tape is gradually pressed down, the blade tip 231 gradually narrows from wide to narrow. This improves the problem of existing cutting blades where the resistance gradually increases during tape pressing, allowing the tape to be pressed down smoothly. This makes it easier and less strenuous to enlarge the cut and cut the tape without needing to increase the tension at the moment of cutting, and also makes the cut surface of the tape relatively flat.

[0031] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model's technical solution. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the content of the present utility model's technical solution shall still fall within the scope of the present utility model's technical solution.

Claims

1. A cutting blade comprising a first side surface and a second side surface located on opposite sides of the cutting blade, and a cutting portion formed at the top of the cutting blade, characterized in that: The cutting section includes a plurality of continuously arranged cutting teeth and a cutting edge formed on the top edge of the first side surface and extending along the plurality of cutting teeth. Each cutting tooth extends obliquely downward from the first side surface toward the second side surface and includes a cutting peak segment and two cutting arc segments respectively connected to opposite ends of the cutting peak segment. The cutting arc segments of two adjacent cutting teeth connect to form a concave valley, and the cutting peak segment of each cutting tooth is a gradually changing arc surface. The width of the cutting peak segment of each cutting tooth gradually decreases from the first side surface toward the second side surface. The vertical height of each cutting tooth between the top and bottom of the first side surface ranges from 0.05 mm to 0.4 mm.

2. The cutting blade of claim 1, wherein Each of the aforementioned valleys forms a downwardly concave arc surface.

3. The cutting blade of claim 2, wherein, The vertical height of the cutting edge segment of each of the cutting teeth between the top edge of the first side and the top edge of the second side is less than or equal to the vertical height between the top and bottom of each of the cutting teeth on the first side.

4. The cutting blade of claim 2, wherein, The height difference between the cutting edge segment of each of the cutting teeth from the first side to the second side is equal to the height difference between the concave valleys from the first side to the second side.

5. The cutting blade of claim 2, wherein, Each of the said cutting teeth has a blade tip segment comprising a steep slope segment and a gentle slope segment. The steep slope segment extends downward at an incline from the first side side toward the second side side. The gentle slope segment is formed between the steep slope segment and the second side side side, and the slope of the gentle slope segment is less than the slope of the steep slope segment.

6. The cutting blade of any one of claims 1 to 5, wherein, The distance between the center points of the cutting edge segments of two adjacent cutting teeth is 0.4 mm to 0.8 mm.

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