Slicing knife, manufacturing method and stamping equipment

Abstract

The invention discloses a slicing knife, a manufacturing method and stamping equipment, and relates to the technical field of medical instruments, a slicing blade comprises a knife body and a cutting edge, and a third cutting edge area, a second cutting edge area and a first cutting edge area are sequentially distributed towards the side away from the knife body. The manufacturing method comprises the following steps: S1, stamping; s2, heat treatment; s3, grinding is conducted; s4, coating a film; s5, sintering and molding; and S6, cutting. The stamping equipment comprises a machine body, a stamping device and a fanning device. A stamping space is formed in the top of the machine body; the stamping device comprises an upper die, a lower die and a driving part; the fanning device comprises a fanning piece and a linkage piece; the fanning piece is rotationally arranged; the upper die can drive the fanning piece to rotate in the moving process. The quality of the slicing knife can be effectively improved, and the service life of the slicing knife is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a slicing knife, a manufacturing method and a stamping device. Background Art

[0002] The microtome knife referred to in medical devices is a disposable medical pathology blade, which is mainly used in pathological tissue section examination. Pathological tissue section examination is an important medical diagnostic method, which involves a series of treatments on the diseased tissue and then observation under a microscope to clarify the nature, type and extent of the disease, providing an important basis for clinical treatment.

[0003] Among them, the slicer is one of the main factors that determine the effect of pathological tissue section examination. Due to the different morphology and hardness of various tissues, the performance requirements of the slicer are extremely high. The existing slicer is generally composed of a blade and a blade, but the existing domestically produced slicers are prone to sticking and curling during use, and have a short service life.

[0004] Therefore, the microtome knives currently produced in China are difficult to meet the needs of hospitals and research institutions, and they often prefer to import microtome knives from abroad. Summary of the invention

[0005] The present application provides a slicing knife, a manufacturing method and a stamping device, which can effectively improve the quality of the slicing knife and extend the service life of the slicing knife.

[0006] On the one hand, the present application provides a slicing knife, which adopts the following technical solution: A slicing knife comprises a blade body and a blade, wherein the blade is located on one side of the blade body, the blade comprises a first blade area, a second blade area and a third blade area, and the third blade area, the second blade area and the first blade area are sequentially distributed toward a side away from the blade body; The angle of the first blade is 16°, the angle of the second blade is 8°, and the angle of the third blade is 6°.

[0007] By adopting the above technical solution, the blade of the slicing knife can have both sharpness and strength, which not only facilitates cutting with the slicing knife, but also reduces the probability of blade chipping, thereby effectively improving the quality of the slicing knife and extending the service life of the slicing knife.

[0008] On the other hand, the present application also provides a manufacturing method, which adopts the following technical solution: A manufacturing method for manufacturing the above-mentioned slicing knife comprises the following steps: S1, punching the material strip to obtain a slicing knife strip; S2, heat treatment of the slicing knife belt, gradient calcination → freezing → low temperature tempering; S3, grinding the slicing knife belt to form the blade, rough grinding → fine grinding, the order of grinding is the first blade area, the second blade area and the third blade area; S4, coating; S5, sintering; S6, cutting the slicing knife belt to obtain a plurality of slicing knives.

[0009] By adopting the above technical solution, the quality of the manufactured slicing knife products can be effectively improved and the service life of the slicing knife products can be extended.

[0010] Optionally, in the step S2, the surface of the slicing knife belt needs to be sprayed with alcohol before low-temperature tempering.

[0011] By adopting the above technical solution, the cleanliness of the slicing knife belt before low-temperature tempering can be effectively improved, making the surface of the slicing knife belt smoother, which helps to improve the effect of subsequent low-temperature tempering.

[0012] Optionally, in the step S4, a multi-arc vacuum magnetron sputtering coating machine is used to coat the surface of the slicing knife tape.

[0013] By adopting the above technical solution, the effect and efficiency of coating on the surface of the slicing knife belt can be effectively improved.

[0014] Optionally, in the step S4, the coating is performed twice, one is spraying the metal mainly composed of chromium, and the other is spraying the Teflon mixed solution, and the Teflon mixed solution is a mixed solution obtained by spraying Teflon and pure water at a mass ratio of 1:20-1:21.

[0015] By adopting the above technical solution, a more uniformly mixed Teflon mixed solution can be obtained, thereby further improving the effect of coating on the surface of the slicing knife belt.

[0016] On the other hand, the present application also provides a stamping device, which adopts the following technical solution: A stamping device, used in the above-mentioned manufacturing method, capable of stamping the material strip to obtain the slicing knife strip, comprising a body, a stamping device and a fan device, wherein the stamping device and the fan device are both arranged on the body; The top of the machine body is provided with a stamping space for stamping and forming the material strip; The punching device comprises an upper die, a lower die and a driving member; the lower die is fixedly arranged on the machine body and is located at the bottom of the punching space; the upper die is located in the punching space, can move relative to the machine body, and is aligned with the lower die along the moving direction; the driving member is arranged on the top of the machine body and can drive the upper die to move; The slicing blade belt is transported in a horizontal position through the stamping space in a horizontal direction, and the slicing blade belt is kept in contact with the top surface of the lower mold; The fan device includes a fan member and a linkage member; the fan member is rotatably arranged on the top of the machine body and located at the top of the stamping space, the fan member is located above the side of the lower mold close to the discharging end of the slicing knife belt, and the rotation axis of the fan member is horizontal and perpendicular to the transportation direction of the slicing knife belt; the two ends of the linkage member are respectively connected to the upper mold and the fan member, and during the movement of the upper mold, the fan member can be driven to rotate and fan in the direction close to the slicing knife belt.

[0017] By adopting the above technical solution, during the process of stamping and forming the slicing knife belt, the top surface of the slicing knife belt can be fanned and blown by a fan device, and the debris on the top surface of the slicing knife belt can be blown off by the airflow, thereby effectively improving the cleanliness of the slicing knife belt and facilitating the transportation of the slicing knife belt for subsequent processing.

[0018] Optionally, the machine body is provided with first baffles on both sides of the rotation axis of the fan member, the first baffles are aligned with the stamping space along the rotation axis of the fan member, and a plurality of mesh holes for intercepting debris are evenly distributed on the first baffles.

[0019] By adopting the above technical solution, the probability of debris located on the top surface of the slicing knife belt being blown away by the fan device and falling everywhere can be reduced, thereby making it easier for staff to clean up the debris later.

[0020] Optionally, the slicing knife belt is transported intermittently and at equal intervals; during the downward movement of the upper mold, the fan element can be driven to rotate in a direction away from the lower mold, so as to fan the portion of the slicing knife belt located on the side of the lower mold along its own transport direction; during the upward movement of the lower mold, the fan element can be driven to rotate in a direction close to the lower mold, so as to fan the portion of the slicing knife belt located above the lower mold.

[0021] By adopting the above technical scheme, during the process of the stamping device stamping and forming the slicing knife belt, the fan device can fan and blow the part of the slicing knife belt that has been stamped and formed; during the process of the stamping device preparing to stamp and form the slicing knife belt, the fan device can fan and blow the part of the slicing knife belt that has just been stamped and formed above the lower mold; thereby effectively improving the effect and efficiency of the fan device blowing off debris.

[0022] Optionally, both sides of the fan member have fan surfaces, and the fan surfaces can drive the airflow to disperse in a direction close to the slicing knife belt and in a direction close to the first baffle.

[0023] By adopting the above technical solution, when the fan device fans and blows the debris on the top surface of the slicing knife belt, the effect of the airflow blowing the debris off the top surface of the slicing knife belt can be effectively improved.

[0024] Optionally, a second baffle is provided on both sides of the machine body along the transport direction of the slicing knife belt, the second baffle is located below the slicing knife belt, and a plurality of mesh holes for intercepting debris are evenly distributed on the second baffle.

[0025] By adopting the above technical solution, the probability of debris on the top surface of the slicing knife belt being blown away by the fan device and falling around can be further reduced, thereby making it easier for staff to clean up the debris later.

[0026] In summary, the present application includes at least one of the following beneficial effects: 1. It can effectively improve the quality of the slicer and extend the service life of the slicer; 2. It can improve the cleanliness of the slicing knife belt during the stamping process, making it easier for the slicing knife belt to be processed later; 3. It can effectively improve the cleaning effect and efficiency of the debris carried by the slicing knife belt during the stamping process, thereby further ensuring the cleanliness of the slicing knife belt after stamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of a slicing knife; Figure 2 is a schematic diagram of a partial cross section of a slicing knife; Figure 3 It is a cross-sectional view of a stamping device when the upper die moves upward to the limit position; Figure 4 It is a cross-sectional view of a stamping device when the upper die moves downward to the limit position; Figure 5 It is a schematic diagram of the cross section of a fan part in a stamping device.

[0028] Explanation of the accompanying drawings: 1. blade; 2. blade; 21. first blade area; 22. second blade area; 23. third blade area; 3. body; 31. stamping space; 4. stamping device; 41. lower mold; 42. upper mold; 43. driving member; 5. fan device; 51. fan member; 511. fan surface; 52. linkage member; 6. first baffle plate; 7. second baffle plate. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-5 This application is described in further detail.

[0030] Embodiment 1: Reference Figure 1 and Figure 2 The embodiment of the present application discloses a slicing knife, comprising a blade body 1 and a blade 2.

[0031] In order to facilitate the use of the slicer for pathological tissue section inspection and effectively ensure the sharpness of the slicer, the slicer is preferably in a rectangular sheet structure as a whole, and the length of the slicer blade is preferably 79.6-79.7 mm, the width is 7.96-8 mm, and the thickness is 0.255±0.002 mm. In this embodiment, since the slicer is a common prior art, its shape is not described here, and it is only briefly shown in the drawings.

[0032] The blade 2 is located on one side of the blade body 1, and includes a third blade area 23, a second blade area 22, and a first blade area 21 in the direction away from the blade body 1. In this embodiment, in order to conveniently express the shape of the blade 2, only a portion cut from the slicing knife is shown in the attached drawings, and in order to conveniently distinguish the first blade area 21, the second blade area 22, and the third blade area 23, horizontal lines are drawn between the first blade area 21, the second blade area 22, and the third blade area 23 to distinguish them; in the actual manufacturing process, the connecting positions between the first blade area 21, the second blade area 22, and the third blade area 23 are all smoothly transitioned.

[0033] The angles of the two side edges of the first edge zone 21 are in the range of 16-18°, the angles of the two side edges of the second edge zone 22 are in the range of 8-10°, and the angles of the two side edges of the third edge zone 23 are in the range of 6-8°. In this embodiment, in order to make the cutting blade have better sharpness, it is preferred that the angles of the two side edges of the first edge zone 21 are 16°, the angles of the two side edges of the second edge zone 22 are 8°, and the angles of the two side edges of the third edge zone 23 are 6°.

[0034] The length of the first cutting edge 21 is 0.12 mm, the length of the second cutting edge 22 is 0.36 mm, and the length of the third cutting edge 23 is 0.72 mm.

[0035] The implementation principle of a slicing knife in the embodiment of the present application is: The blade 2 of the slicer adopts a three-section design, and each section has a different angle, which can effectively improve the cutting efficiency of the slicer and effectively improve the structural strength of the slicer at the blade 2, thereby improving the quality of the slicer and extending the service life of the slicer.

[0036] Embodiment 2: Reference Figure 1 and Figure 2 The present application embodiment discloses a manufacturing method for manufacturing a slicing knife as in embodiment 1, comprising the following steps: S1. Punch the material strip to obtain a slicing knife strip.

[0037] The raw material (i.e., material strip) of the slicing knife is placed on a material rack, the material strip is pulled out, and the material strip is punched by a high-speed precision punching machine to form the required slicing knife strip; a plurality of slicing knives are arranged at equal intervals on the slicing knife strip, and the blade 2 of each slicing knife is located on the same side of the slicing knife strip.

[0038] In this embodiment, the material strip is preferably made of SUS440 stainless steel.

[0039] S2. Heat treatment of slicing knife belt, gradient calcination → freezing → alcohol spraying → low temperature tempering.

[0040] The slicing knife strip is subjected to gradient calcination treatment - freezing treatment - alcohol spraying treatment - low temperature tempering treatment in sequence.

[0041] The gradient calcination process is divided into four stages: The temperature of the first stage is 800℃ and the holding time is 2min; The second stage temperature is 1020℃, and the holding time is 3min; The temperature of the third stage is 1220℃, and the holding time is 1min; The temperature of the fourth stage is 1320°C and the holding time is 1 min.

[0042] The freezing temperature was -70°C and the holding time was 7 min.

[0043] The duration of alcohol spraying is 1 min.

[0044] The low-temperature tempering treatment is carried out in three sections, the temperature of each section is 200°C, and the duration of each section is 4 minutes.

[0045] During the gradient calcination and low-temperature tempering processes, the slicing knife belt was protected by 99.99% high-purity nitrogen.

[0046] S3, grinding the slicing knife belt to form a blade 2, rough grinding → fine grinding, the grinding order is the first blade area 21, the second blade area 22 and the third blade area 23.

[0047] The slicing knife belt is ground by a knife grinder to form blades 2 on the plurality of slicing knives on the slicing knife belt.

[0048] First, the same side of multiple slicing knives on the slicing knife belt is roughly ground to form the basic shape of the blade 2. At this time, there is a margin at the blade 2 for subsequent fine grinding; then fine grinding is performed at the blade 2 to obtain the first blade area 21, the second blade area 22 and the third blade area 23 of the required sizes at the blade 2.

[0049] Among them, during the rough grinding and fine grinding processes, the grinding order is the first cutting area 21, the second cutting area 22 and the third cutting area 23; and during the fine grinding process, the grinding accuracy is different, and the grinding accuracy gradually increases in the order of the third cutting area 23, the second cutting area 22 and the first cutting area 21.

[0050] S4, coating.

[0051] The blade 2 positions of multiple slicing knives on the slicing knife belt are coated by a multi-arc vacuum magnetron sputtering coating machine.

[0052] The coating is carried out in two steps: The first coating is carried out under vacuum conditions, and the interior is filled with argon and nitrogen for protection, and a metal mainly composed of chromium is sprayed on the blade 2 to form a uniform film layer. In this embodiment, the material composition of the sprayed material in this process is preferably 65-75% chromium, 12-18% rare earth metal and 12-18% platinum by mass percentage.

[0053] The second coating is also carried out under vacuum conditions, and the Teflon mixed solution is uniformly attached to the surface of the blade 2 by electrostatic spraying to form a uniform film layer. In this embodiment, it is preferred that the duration of this process is 9 minutes to ensure that the blade 2 is completely and evenly wrapped by the Teflon mixed solution, and the wrapping thickness is 0.001-0.003mm; and it is preferred that the Teflon mixed solution sprayed in this process is a mixed solution composed of Teflon and pure water, and the mass ratio of Teflon to pure water is 1:20-1:21.

[0054] S5, sintering.

[0055] The coated slicing blade strip is sintered at a temperature of 600° C. and lasts for 10 minutes.

[0056] S6, cutting the slicing knife belt to obtain a plurality of slicing knives.

[0057] The slicing knife belt is cut into a plurality of separate slicing knives, and then the cut slicing knives are subjected to non-destructive testing. After passing the test, they can be sterilized and packaged in a dust-free workshop.

[0058] The slicer knife made according to the above manufacturing method may be made of: Fe (84.9-85%), Cr (12.8-13.2%), Mn (0.7-0.8%), C (0.6-0.7%), Si (0.28-0.32%), Ni (0.09-0.1%), V (0.04-0.05%), Cu (0.02-0.025%), etc.

[0059] The slicing knife prepared according to the above manufacturing method has the following performance: Hardness: 63 HRC Corrosion resistance: Salt spray test time 70 hours Paper cutting force: 13 N Toughness: 325 MPa Glossiness: 75 GU Compared with imported slicing knives on the market, the slicing knives manufactured by the above manufacturing method will have the following advantages: Good hardness and toughness and not easy to rust; The blade 2 is sharp, the cut is smooth, and it is easy to use; The blade 2 has sufficient glossiness, and the objects being cut are not easy to stick to the blade 2; It has high durability and strong reusability (can be reused more than 50 times).

[0060] Embodiment 3: Reference Figure 3 and Figure 4 This embodiment discloses a stamping device, which is used in step S1 of a manufacturing method in embodiment 2, and can stamp a material strip to obtain a desired slicing knife strip. In this embodiment, in order to facilitate the representation of the stamping device in the drawings, the material strip and the slicing knife strip are omitted, and only the positions of the material strip and the slicing knife strip are shown.

[0061] The stamping equipment includes a machine body 3, a stamping device 4 and a fan device 5. The machine body 3 is used to provide a place for stamping the material strip to obtain a slicing knife strip; the stamping device 4 is used to stamp the material strip; the fan device 5 is used to blow away the metal particles and other debris generated during the stamping process and falling on the top surface of the slicing knife strip, so as to improve the cleanliness of the slicing knife strip and facilitate the transportation of the slicing knife strip for subsequent processing.

[0062] The body 3 is a rectangular parallelepiped structure as a whole. There is a stamping space 31 near the top of the body 3 for the feed belt to be transported and stamped to obtain a slicing knife belt. The stamping space 31 can communicate with the space outside the body 3 along the length and width directions of the body 3.

[0063] The punching device 4 includes a lower die 41, an upper die 42 and a driving member 43. The upper die 42 cooperates with the lower die 41 to punch and form the material strip; and the driving member 43 provides power for the operation of the punching device 4.

[0064] The lower die 41 is fixedly mounted on the machine body 3, located at the bottom of the stamping space 31, and centered in the stamping space 31 in the horizontal direction; the upper die 42 can move in the vertical direction relative to the machine body 3, is located in the stamping space 31, and is aligned with the lower die 41 in the vertical direction; the driving member 43 is fixedly mounted on the top of the machine body 3, and can drive the upper die 42 to move in the stamping space 31. In this embodiment, the driving member 43 is preferably a servo hydraulic cylinder, which is fixedly connected to the upper die 42 through a piston rod passing through the machine body 3, so as to drive the upper die 42 to move in the vertical direction relative to the machine body 3; since the above-mentioned stamping device 4 is a common prior art, it will not be described in detail here, and it is only briefly shown in the drawings.

[0065] The material belt is a rectangular sheet structure as a whole, and the width of the material belt is smaller than the dimension of the lower mold 41 along the width direction of the body 3; during the loading process of the material belt on the stamping device 4 and the unloading process of the slicing knife belt from the stamping device 4, the material belt and the slicing knife belt will be transported in a horizontal position along their own length direction, and the transportation direction of the material belt and the slicing knife belt is parallel to the length direction of the body 3. Both can pass through the stamping space 31 during transportation, and the bottom surface of the material belt can be kept in contact with the top surface of the lower mold 41 during the stamping process. In this embodiment, it is preferred that the material belt and the slicing knife belt are transported intermittently and at equal intervals, and the range of position change each time of transportation is the same as the range that the stamping device 4 can stamp on the material belt each time; since the device for driving the material belt and the slicing knife belt to move with the above-mentioned function is a common prior art, it will not be described here in detail, and it is omitted in the accompanying drawings.

[0066] The fan device 5 is installed in the punching space 31, located on the side of the punching device 4 close to the unloading end of the slicing knife belt, and located above the slicing knife belt. The fan device 5 includes a fan member 51 and a linkage member 52. The fan member 51 can move relative to the body 3 to fan and blow air, forming an airflow flowing toward the slicing knife belt, and the debris on the top surface of the slicing knife belt is blown away by the airflow; the linkage member 52 is used to form a linkage between the fan member 51 and the punching device 4, so that the fan member 51 can fan different positions of the slicing knife belt according to the operating state of the punching device 4.

[0067] The fan member 51 is a rectangular plate-shaped structure as a whole. The fan member 51 is rotatably connected to the top structure of the body 3. The rotation axis of the fan member 51 is parallel to its own length direction and to the width direction of the body 3. The rotation connection position between the fan member 51 and the body 3 is located at the top of the stamping space 31, and the rotation axis of the fan member 51 divides the fan member 51 into two parts, one long and one short, along its own width direction.

[0068] The two ends of the linkage member 52 in the length direction are connected to the upper mold 42 and the fan member 51 respectively. One end of the linkage member 52 is rotatably connected to the side of the upper mold 42 close to the unloading end of the slicing knife belt, and the rotation axes of the two are parallel to the width direction of the machine body 3; the other end of the linkage member 52 is rotatably connected to the end of the short side of the fan member 51 relative to its own rotation axis, and the rotation axes of the two are also parallel to the width direction of the machine body 3.

[0069] When the upper mold 42 moves upward to the extreme position, the fan member 51 will be in a position state in which its width direction is approximately vertical, and at this time the width direction of the fan member 51 is inclined upward along the cutting direction of the slicing knife belt; when the upper mold 42 moves downward to the extreme position, the fan member 51 will be in a position state in which its width direction is approximately horizontal, and at this time the width direction of the fan member 51 is inclined downward along the cutting direction of the slicing knife belt.

[0070] During a complete movement of the upper mold 42 from top to bottom, the fan member 51 will rotate relative to the machine body 3 in a direction away from the lower mold 41. During this process, the airflow generated by the rotation of the fan member 51 will flow toward the portion of the slicing knife belt located in the lower mold 41 near the unloading end of the slicing knife belt, thereby blowing away the debris on the top surface of this portion of the slicing knife belt.

[0071] During a complete movement of the upper mold 42 from bottom to top, the fan member 51 will rotate relative to the machine body 3 toward the lower mold 41. During this process, the airflow generated by the rotation of the fan member 51 will flow toward the portion of the slicing knife belt located above the lower mold 41, blowing away the debris on the top surface of this portion of the slicing knife belt.

[0072] Reference Figure 3 and Figure 5 Furthermore, in order to improve the effect of the fan member 51 in blowing away the debris on the top surface of the slicing knife belt, it is preferred that the fan member 51 has fan surfaces 511 on both sides of the thickness direction, and the fan surface 511 is a convex surface protruding outward, and the middle position along the length direction of the fan member 51 is the highest point of the protrusion, and the highest point is an inclined surface on both sides of the length direction of the fan member 51.

[0073] At this time, the airflow generated by the rotation of the fan member 51 will be blown in the direction perpendicular to the two inclined surfaces on the fan surface 511, so that after the airflow blows to the debris located on the top surface of the slicing knife belt, it can effectively drive the debris to be blown off from both sides of the slicing knife belt.

[0074] Reference Figure 3 and Figure 4 Furthermore, in order to allow the debris to stay on the machine body 3 after being blown away and reduce the impact of the debris falling around on the surrounding environment, two first baffles 6 and two second baffles 7 are preferably fixedly installed on the machine body 3 on the surrounding side of the stamping space 31.

[0075] The first baffle 6 and the second baffle 7 are both rectangular plate structures, and both are evenly distributed with a plurality of mesh holes for air flow to pass through and for intercepting debris.

[0076] The two first baffles 6 are respectively fixedly installed on both sides of the machine body 3 in the width direction. The two first baffles 6 are aligned along the width direction of the machine body 3 , and the first baffles 6 can cover the stamping space 31 along the width direction of the machine body 3 .

[0077] The two second baffles 7 are respectively fixedly mounted on both sides of the length direction of the machine body 3, the two second baffles 7 are aligned along the length direction of the machine body 3, and the two second baffles 7 are respectively located below the material belt and the slicing knife belt. In this embodiment, preferably, there is only a small gap between the second baffle 7 and the material belt or the slicing knife belt.

[0078] At this time, the two first baffles 6 and the two second baffles 7 can jointly intercept the debris around the machine body 3 , effectively reducing the probability of the debris being blown off the machine body 3 by the fan device 5 .

[0079] The implementation principle of a stamping device in the embodiment of the present application is: After the material strip is transported into the punching space 31, the punching device 4 punches and forms the material strip to obtain a slicing blade strip, which is then transported and sent out for subsequent processing; During the process of stamping and forming the material strip by the stamping device 4, the fan device 5 will work along with the stamping device 4, and the fan device 5 can promptly blow away the debris on the part of the slicing knife strip that has just been stamped and the top surface of the stamped part, thereby improving the cleanliness of the slicing knife strip after unloading and facilitating its subsequent processing.

[0080] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A slicing knife, comprising a blade (1) and a blade (2), wherein the blade (2) is located on one side of the blade (1), and characterized in that: The blade (2) comprises a first blade area (21), a second blade area (22) and a third blade area (23), and the third blade area (23), the second blade area (22) and the first blade area (21) are sequentially distributed towards a side away from the blade body (1); The angle of the first blade (2) is 16°, the angle of the second blade (2) is 8°, and the angle of the third blade (2) is 6°.

2. A manufacturing method for manufacturing a slicing knife as claimed in claim 1, characterized in that: The following steps are involved: S1, punching the material strip to obtain a slicing knife strip; S2, heat treatment of the slicing knife belt, gradient calcination → freezing → low temperature tempering; S3, grinding the slicing knife belt to form the blade (2), from rough grinding to fine grinding, the order of grinding is the first blade area (21), the second blade area (22) and the third blade area (23); S4, coating; S5, sintering; S6, cutting the slicing knife belt to obtain a plurality of slicing knives.

3. A manufacturing method according to claim 2, characterized in that: In the step S2, the surface of the slicing knife belt needs to be sprayed with alcohol before low-temperature tempering.

4. A manufacturing method according to claim 2, characterized in that: In the step S4, a multi-arc vacuum magnetron sputtering coating machine is used to coat the surface of the slicing knife tape.

5. A manufacturing method according to claim 4, characterized in that: In the step S4, the coating is carried out in two steps, one is spraying the metal mainly composed of chromium, and the other is spraying the Teflon mixed solution, and the Teflon mixed solution is a mixed solution obtained by spraying Teflon and pure water at a mass ratio of 1:20-1:

21.

6. A stamping device, used in a manufacturing method as claimed in any one of claims 2 to 5, capable of stamping the material strip to obtain the slicing blade strip, characterized in that: It comprises a machine body (3), a punching device (4) and a fan device (5), wherein the punching device (4) and the fan device (5) are both arranged on the machine body (3); The top of the machine body (3) is provided with a stamping space (31) for stamping the material strip; The punching device (4) comprises an upper die (42), a lower die (41) and a driving member (43); the lower die (41) is fixedly arranged on the machine body (3) and is located at the bottom of the punching space (31); the upper die (42) is located in the punching space (31), can move relative to the machine body (3), and is aligned with the lower die (41) along the moving direction; the driving member (43) is arranged on the top of the machine body (3) and can drive the upper die (42) to move; The slicing knife belt is transported in a horizontal direction through the punching space (31) in a horizontal position, and the slicing knife belt is kept in contact with the top surface of the lower mold (41); The fan device (5) comprises a fan member (51) and a linkage member (52); the fan member (51) is rotatably arranged at the top of the machine body (3) and located at the top of the punching space (31); the fan member (51) is located above a side of the lower mold (41) close to the discharge end of the slicing knife belt, and the rotation axis of the fan member (51) is horizontal and perpendicular to the transportation direction of the slicing knife belt; the two ends of the linkage member (52) are respectively connected to the upper mold (42) and the fan member (51), and the upper mold (42) can drive the fan member (51) to rotate and fan in a direction close to the slicing knife belt during its movement.

7. A stamping device according to claim 6, characterized in that: The machine body (3) is provided with first baffles (6) on both sides along the rotation axis of the fan member (51); the first baffles (6) are aligned with the stamping space (31) along the rotation axis of the fan member (51); and a plurality of mesh holes for intercepting debris are evenly distributed on the first baffles (6).

8. A stamping device according to claim 7, characterized in that: The slicing knife belt is transported intermittently and at equal intervals; when the upper mold (42) moves downward, it can drive the fan member (51) to rotate in a direction away from the lower mold (41) to fan the portion of the slicing knife belt located on the side of the lower mold (41) along its own transport direction; when the lower mold (41) moves upward, it can drive the fan member (51) to rotate in a direction close to the lower mold (41) to fan the portion of the slicing knife belt located above the lower mold (41).

9. A stamping device according to claim 8, characterized in that: Both sides of the fan element (51) are provided with fan surfaces (511), and the fan surfaces (511) are capable of driving the airflow to disperse in a direction close to the slicing knife belt and in a direction close to the first baffle (6).

10. A stamping device according to claim 8, characterized in that: The machine body (3) is provided with second baffles (7) on both sides along the transport direction of the slicing knife belt. The second baffles (7) are located below the slicing knife belt, and a plurality of mesh holes for intercepting debris are evenly distributed on the second baffles (7).

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