A cutting knife suitable for a vibrating knife, a vibrating knife and a cutting machine

Abstract

The utility model relates to the cutting knife field of leather cutting machine especially points to the cutting knife, vibration knife and cutting machine suitable for vibration knife, contains cutting knife body, cutting knife body has the blade edge of the blade tip of leather puncture and formation in the side of sword body, its characterized in that, the back side of blade tip contains the blade face of the blade tip angle reduction with the inclination degree rise, is used for increasing the impact resistance of blade tip, the utility model discloses a cutting knife in vibration knife to the blade tip design gradually reduces the blade face of blade tip angle, the area of the more gentle inclination degree of blade face provides greater structural strength and impact resistance, this increases the blade tip cross section mode, improves the damage resistance of blade tip when being stressed, in this way, the relatively steeper area of blade face ensures the sharpness of blade tip, the combination of two different blade tip angle blade faces, namely, delays the situation of chipping, and optimizes the overall production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of cutting blades for leather cutting machines, and more particularly to a cutting blade suitable for vibrating blades, a vibrating blade, and a cutting machine. Background Technology

[0002] In a cutting machine, the vibrating knife works by driving the cutter to make a longitudinal reciprocating motion. The cutter is the key component that cuts the leather into various patterns.

[0003] The aforementioned knife is designed to cut leather using a blade on the side of the blade. However, with prolonged use, the knife has revealed a series of problems, which are analyzed below:

[0004] 1. Short-term chipping leads to a shorter service life for the cutting knife.

[0005] The chipping phenomenon mainly occurs in the tip area of ​​the blade, and the design of the tip is as follows: Figure 1 As shown, while the 28° acute angle makes the blade tip sharper, it also reduces the strength of the blade tip. Through testing, the probability of the blade chipping is significantly higher after 28 hours of continuous use.

[0006] A 28-hour usage cycle means that the cutter needs to be replaced very frequently. The low economic efficiency exacerbates the manufacturer's production costs, and replacing the cutter involves workers disassembling and assembling it, which affects the overall production efficiency. Utility Model Content

[0007] To solve the above problems, this utility model provides a cutter suitable for vibrating knives, a vibrating knife, and a cutting machine. By improving the structure of the blade tip, the phenomenon of blade tip chipping is delayed.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is: a cutter suitable for vibrating knives, comprising a cutter body, the cutter body having a blade tip for piercing leather and a cutting edge formed on the side of the blade body, characterized in that the back side of the blade tip includes a blade surface that reduces the blade tip angle as the degree of inclination increases, in order to increase the impact resistance of the blade tip.

[0009] The beneficial effects of this utility model are:

[0010] This invention features a blade with a gradually decreasing tip angle in the cutting blade of a vibrating knife. The gentler slope of the blade provides greater structural strength and impact resistance. By increasing the cross-section of the tip, the blade's resistance to damage under stress is improved. At the same time, the relatively steeper slope of the blade ensures the sharpness of the tip. The combination of two different tip angles not only delays the occurrence of chipping but also optimizes overall production efficiency.

[0011] The blade has at least two sets. In the optimal implementation, the blade has two sets: a first blade and a second blade. The blade tip angle between the first blades on the two left and right back sides of the blade tip is between 36-40°, and the blade tip angle between the second blades is between 26-30°. More preferably, the blade tip angle between the first blades is 38°, and the blade tip angle between the second blades is 28°. This design provides the best strength and piercing performance for cutting leather. The 38° blade tip angle increases the cross-sectional area of ​​the blade tip, resulting in stronger impact resistance and chipping resistance, ensuring the overall strength of the blade tip. The subsequent 28° angle compensates for the low sharpness of the 38° blade tip. At the same time, the lower blade tip angle reduces the cutting resistance during cutting.

[0012] The cutter body includes a cutting section and a connecting section. The connecting section is connected to the drive end of the vibrating knife. The cutting section has an inner arc surface, the cutting edge is located on the inner arc surface, and the bottom of the cutting section is the blade tip.

[0013] The head body includes a blade back that overlaps the cutting part and the connecting part. The angle between the bottom surface of the blade tip and the blade back is between 103 and 107°. Preferably, the angle between the bottom surface of the blade tip and the blade back is 105°. This angle is the optimal implementation method, which allows the blade tip to cut into the leather smoothly with less resistance.

[0014] Preferably, the cutter body is made of tungsten steel.

[0015] On the area where the connecting part meets the cutting edge, there is a first recessed clearance part, which is used to avoid interference when assembling with the vibrating knife drive part.

[0016] A vibrating knife comprising the aforementioned cutting blade.

[0017] A cutting machine includes the aforementioned vibrating blade, which includes the aforementioned cutting blade. Attached Figure Description

[0018] Figure 1 It is a 3D diagram of an existing cutting blade.

[0019] Figure 2 This is a perspective view of the present invention.

[0020] Figure 3 yes Figure 2 Enlarged diagram of point A.

[0021] Figure 4 This is a top view of the present invention.

[0022] Figure 5 The tip angle between the two first cutting faces at position B is shown.

[0023] Figure 6The tip angle between the two second cutting faces at position B is shown.

[0024] Figure 7 This is a side view of the present invention. Detailed Implementation

[0025] Please see Figure 2-6 As shown, a cutting knife suitable for vibrating knives includes a cutting knife body having a blade tip 21 for piercing leather and a cutting edge 23 formed on the side of the blade body 22. The blade tip 21 is characterized in that the back side of the blade tip 21 includes a blade surface that reduces the blade tip angle as the degree of inclination increases, in order to increase the impact resistance of the blade tip.

[0026] The beneficial effects of this utility model are:

[0027] This invention designs a blade surface with a gradually decreasing blade tip angle on the cutting blade of a vibrating knife. The area with a gentler blade surface inclination provides greater structural strength and impact resistance. By increasing the cross-section of the blade tip 21, the damage resistance of the blade tip 21 under stress is improved. At the same time, the relatively steeper area of ​​the blade surface ensures the sharpness of the blade tip 21. The combination of two blade surfaces with different blade tip angles not only delays the occurrence of chipping but also optimizes the overall production efficiency.

[0028] In the optimal implementation, the blade has two sets of blades: a first blade 21a and a second blade 21b. The blade tip angle between the first blade 21a on the two left and right back sides of the blade tip 21 is 38°, and the blade tip angle between the two second blades 21b is 28°. This design provides the best strength and piercing performance for cutting leather. The 38° blade tip angle increases the cross-sectional area of ​​the blade tip, resulting in stronger impact resistance and chipping resistance, ensuring the overall strength of the blade tip. The subsequent 28° angle compensates for the low sharpness of the 38° blade tip. At the same time, the lower blade tip angle reduces the cutting resistance during cutting.

[0029] The cutter body includes a cutting part 2 and a connecting part 1. The connecting part 1 is connected to the drive end of the vibrating knife. The cutting part has an inner arc surface, the cutting edge 23 is located on the inner arc surface, and the bottom of the cutting part is the blade tip 21.

[0030] The cutter body includes a blade back 24 that overlaps the cutting part 2 and the connecting part 1. The angle between the bottom surface of the blade tip 21 and the blade back 24 is 105°. This angle is the optimal implementation, which allows the blade tip 21 to cut into the leather smoothly with less resistance.

[0031] Preferably, the cutter body is made of tungsten steel.

[0032] On the area where the connecting part 1 connects with the cutting edge 23, there is a first recessed clearance part 3, which is used to avoid interference when assembling with the vibrating knife drive part.

[0033] A vibrating knife comprising the aforementioned cutting blade.

[0034] A cutting machine includes the aforementioned vibrating blade, which includes the aforementioned cutting blade.

[0035] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A cutting knife suitable for vibrating knives, comprising a cutting knife body having a blade tip for piercing leather and a cutting edge formed on the side of the blade, characterized in that, The back side of the blade tip includes a blade surface that reduces the blade tip angle as the degree of tilt increases, in order to increase the impact resistance of the blade tip.

2. A cutting blade suitable for a vibrating knife according to claim 1, characterized in that, The blade surface comprises at least two sets, namely a first blade surface and a second blade surface. The blade tip angle between the first blade surface on the two back sides of the blade tip is between 36-40°, and the blade tip angle between the second blade surface is between 26-30°.

3. A cutting blade suitable for a vibrating knife according to claim 1, characterized in that, The cutter body includes a cutting section and a connecting section. The connecting section is connected to the drive end of the vibrating knife. The cutting section has an inner arc surface, the cutting edge is located on the inner arc surface, and the bottom of the cutting section is the blade tip.

4. A cutting blade suitable for a vibrating knife according to claim 3, characterized in that, The cutter body includes a blade back that overlaps the cutting part and the connecting part, and the angle between the bottom surface of the blade tip and the blade back is between 103 and 107°.

5. A cutting blade suitable for a vibrating knife according to claim 1, characterized in that, The cutter body is made of tungsten steel.

6. A cutting blade suitable for a vibrating knife according to claim 3, characterized in that, The area where the connecting part meets the cutting edge is provided with a first recessed clearance.

7. A cutting blade suitable for a vibrating knife according to claim 2, characterized in that, The tip angle between the first cutting face on the two back sides of the blade is 38°, and the tip angle between the second cutting face is 28°.

8. A cutting blade suitable for a vibrating knife according to claim 4, characterized in that, The angle between the bottom surface of the blade tip and the back of the blade is 105°.

9. A vibrating knife, characterized in that, It includes a vibrating knife cutter as described in any one of claims 1-8.

10. A cutting machine comprising a vibrating blade, characterized in that, The vibrating knife includes the cutting blade as described in any one of claims 1-8.

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