A replaceable electric shears head, blade manufacturing method and application thereof

Abstract

The invention relates to a replaceable electric shears head, a method for manufacturing a blade and applications thereof, comprising a head housing and an upper blade and a lower blade mounted on the head housing. The upper blade is manufactured through steps such as blanking, slot milling, heat treatment, alloy inserting and blade sharpening, and the lower blade is manufactured through steps such as blanking, bending, slot milling, heat treatment, alloy inserting and blade sharpening. The wear resistance of the tool is improved by inserting alloy into the blade, and during use, the two alloys are continuously run-in, which can keep the blade sharp and improve the service life of the product. In addition, a wear-resistant gasket is installed in the head housing between the upper assembly part and the lower assembly part, which can prevent direct friction between the upper assembly part and the lower assembly part, further improving the wear resistance and service life of the product.

Description

[Technical field]

[0002] The invention relates to the technical field of cutting knife tools, in particular to a cutting head of an electric cutting knife and a method for manufacturing a blade thereof. [Background technology]

[0004] The electric cutting knives in the current technology all need to use an upper knife and a lower knife to cooperate, and the upper knife and the lower knife in the prior art are generally manufactured by blanking, heat treatment and sharpening, and have poor wear resistance. After long-term use, the blade will become dull, and the blade needs to be replaced frequently.

[0005] In addition, since the upper and lower blades are in direct contact and friction at the assembly position, the contact position will wear and become thinner after long-term use, and a blade edge or gap or even breakage will occur, making it impossible to cut objects, which has the disadvantages of poor safety and short service life. Therefore, it is necessary to design a blade head with high wear resistance and long service life. [Summary of the invention]

[0007] In order to solve the above problems, the present invention provides a replaceable electric shears head, a blade manufacturing method and application thereof, which has the characteristics of high wear resistance and long service life.

[0008] To achieve the above purpose, the present invention provides the following technical solutions:

[0009] A replaceable electric shears blade, comprising a blade housing 4 and an upper blade 1 and a lower blade 2 mounted on the blade housing 4, wherein the upper blade 1 comprises an upper blade portion 11 and an upper assembly portion 12 integrally formed with the upper blade portion 11, wherein the upper assembly portion 12 is located above and behind the upper blade portion 11; the lower blade 2 comprises a lower blade portion 21, a lower assembly portion 23 and a connecting portion 22 for connecting the lower blade portion 21 and the lower assembly portion 23, wherein the lower blade 2 is integrally formed, and the lower assembly portion 23 is located above and behind the lower blade portion 21; the upper assembly portion 12 and the lower assembly portion 23 are respectively mounted in the blade housing 4, wherein the upper blade portion 11 and the lower blade portion 21 are exposed outside the blade housing 4, and a wear-resistant gasket 3 located between the upper assembly portion 12 and the lower assembly portion 23 is also mounted in the blade housing 4.

[0010] As a preferred embodiment, it is further defined as: an upper groove 13 is formed on the lower end of the upper knife portion 11 close to the side of the lower knife 2, and an upper alloy part 14 is embedded in the upper groove 13; a lower groove 24 is formed on the upper end of the lower knife portion 21 close to the side of the upper knife 1, and a lower alloy part 25 is embedded in the lower groove 24.

[0011] As a preferred embodiment, it is further defined as: the upper assembly part 12 is provided with an upper hinge hole 15, the lower assembly part 23 is provided with a lower hinge hole 26 matched with the upper hinge hole 15, and the upper assembly part 12, the wear-resistant gasket 3 and the lower assembly part 23 are hinged in the cutter head housing 4 through a hinge column.

[0012] A method for manufacturing a blade for an electric shearing knife head comprises an upper blade 1 and a lower blade 2. The processing technology of the upper blade 1 comprises the following steps:

[0013] Step 1.1, obtaining an upper blade blank 10 through a blanking process, wherein the upper blade blank 10 comprises an upper blade portion 11 and an upper assembly portion 12 integrally formed with the upper blade portion 11, wherein the upper assembly portion 12 is located above and behind the upper blade portion 11;

[0014] Step 1.2, processing the upper blade portion 11 by a milling process so that an upper groove 13 is formed on a side of the lower end of the upper blade portion 11 close to the lower blade 2;

[0015] Step 1.3, heat treating the upper blade blank 10;

[0016] Step 1.4, inserting the upper alloy piece 14 into the upper groove 13 of the upper blade portion 11;

[0017] Step 1.5: sharpen the upper blade portion 11 to obtain the upper blade 1.

[0018] As a preferred embodiment, it is further defined as: the processing technology of the lower knife 2 includes the following steps:

[0019] Step 2.1, obtaining a lower blade blank 20 through a blanking process, wherein the lower blade blank 20 comprises a lower blade portion 21, a lower assembly portion 23, and a connecting portion 22 for connecting the lower blade portion 21 and the lower assembly portion 23, wherein the lower blade blank 20 is integrally formed, and the lower assembly portion 23 is located above and behind the lower blade portion 21;

[0020] Step 2.2, bend the connecting portion 22 transversely so that the lower knife portion 21 and the lower assembly portion 23 are not on the same vertical plane;

[0021] Step 2.3, processing the lower blade portion 21 by a milling process so that a lower groove 24 is formed on the upper end of the lower blade portion 21 close to the upper blade 1;

[0022] Step 2.4, heat treating the lower blade blank 20;

[0023] Step 2.5, inserting the lower alloy piece 25 into the lower groove 24 of the lower blade portion 21;

[0024] Step 2.6: sharpen the lower blade portion 21 to obtain the lower blade 2.

[0025] As a preferred embodiment, it is further defined as: in the step 1.4, the upper alloy member 14 is fixed in the upper groove 13 by welding; in the step 2.5, the lower alloy member 25 is fixed in the lower groove 24 by welding.

[0026] As a preferred embodiment, it is further defined as: the upper assembly part 12 is formed with an upper hinge hole 15 during the blanking process, and the lower assembly part 23 is formed with a lower hinge hole 26 during the blanking process.

[0027] As a preferred embodiment, it is further defined as: after the connecting portion 22 is bent in the step 2.2, the lower assembly portion 23 is tilted, and the angle between the lower assembly portion 23 and the lower knife portion 21 is 3°; after the connecting portion 22 is bent in the step 2.2, the angle with the vertical plane is 49°±1°.

[0028] As a preferred embodiment, it is further defined as: the angle between the cutting edge of the upper knife 1 in step 1.5 and the vertical plane is 45°; the angle between the cutting edge of the lower knife 2 in step 2.6 and the vertical plane is 45°.

[0029] As a preferred embodiment, it is further defined as follows: the hardness requirement of the heat treatment in step 1.3 and step 2.4 is HRC55.

[0030] An electric cutting knife equipped with an electric cutting knife head comprises a body 5 and a key switch 6 arranged on the body 5, the front end of the body 5 is detachably connected to the head housing 4, the head housing 4 is equipped with an upper knife 1 and a lower knife 2, the body 5 is provided with a driving motor assembly for driving the upper knife 1 and the lower knife 2 to perform cutting motion towards each other, and a driving circuit connected to the driving motor assembly, and the key switch 6 is electrically connected to the driving circuit.

[0031] As a preferred embodiment, it is further defined as: the upper knife 1 has an upper knife portion 11 and an upper assembly portion 12 integrally formed with the upper knife portion 11, and the upper assembly portion 12 is located at the upper rear portion of the upper knife portion 11; the lower knife 2 has a lower knife portion 21, a lower assembly portion 23 and a connecting portion 22 for connecting the lower knife portion 21 and the lower assembly portion 23, the lower knife 2 is integrally formed, and the lower assembly portion 23 is located at the upper rear portion of the lower knife portion 21; the upper assembly portion 12 and the lower assembly portion 23 are respectively installed in the knife head housing 4, the upper knife portion 11 and the lower knife portion 21 are exposed outside the knife head housing 4, and a wear-resistant gasket 3 located between the upper assembly portion 12 and the lower assembly portion 23 is also installed in the knife head housing 4.

[0032] As a preferred embodiment, it is further defined as: an upper groove 13 is formed on the lower end of the upper knife portion 11 close to the side of the lower knife 2, and an upper alloy part 14 is embedded in the upper groove 13; a lower groove 24 is formed on the upper end of the lower knife portion 21 close to the side of the upper knife 1, and a lower alloy part 25 is embedded in the lower groove 24.

[0033] As a preferred embodiment, it is further defined as: the upper assembly part 12 is provided with an upper hinge hole 15, the lower assembly part 23 is provided with a lower hinge hole 26 matched with the upper hinge hole 15, and the upper assembly part 12, the wear-resistant gasket 3 and the lower assembly part 23 are hinged in the cutter head housing 4 through a hinge column.

[0034] The beneficial effects of the present invention are:

[0035] 1. The upper knife created by the present invention is manufactured through the steps of blanking, slot milling, heat treatment, alloy inserting and blade sharpening; the lower knife is manufactured through the steps of blanking, bending, slot milling, heat treatment, alloy inserting and blade sharpening. The wear resistance of the tool is improved by inserting alloy into the blade, and during use, the two alloys are continuously run-in, which can keep the blade sharp and improve the service life of the product.

[0036] 2. A wear-resistant gasket is also installed in the cutter head housing between the upper assembly part and the lower assembly part, which can prevent direct friction between the upper assembly part and the lower assembly part, further improving the wear resistance and service life of the product.

Brief Description of the Drawings

[0038] Figure 1 It is the front view of the upper cutter blank;

[0039] Figure 2 It is a top view of the upper cutter blank;

[0040] Figure 3 This is the main view of the upper cutter blank after being processed by the milling process;

[0041] Figure 4 yes Figure 3 Sectional view at AA;

[0042] Figure 5 This is the front view of the upper cutter blank being inserted into the upper alloy part;

[0043] Figure 6 yes Figure 5 Sectional view at the middle BB;

[0044] Figure 7 This is the main view after the upper knife is sharpened;

[0045] Figure 8 yes Figure 7 Sectional view at CC;

[0046] Fig. 9 It is the front view of the lower cutter blank;

[0047] Fig.10 It is a top view of the lower knife blank;

[0048] Fig.11 It is the front view of the lower cutter blank after the connection part is bent;

[0049] Fig.12 It is a top view of the lower cutter blank after the connection part is bent;

[0050] Fig.13 It is a side view of the lower cutter blank after the connection part is bent;

[0051] Fig.14 This is the main view of the lower cutter blank after being processed by the milling process;

[0052] Fig.15 It is a top view of the lower cutter blank after being processed by the milling process;

[0053] Fig.16 This is the rear view of the lower cutter blank after being processed by the milling process;

[0054] Fig.17 This is the front view of the lower cutter blank being inserted into the lower alloy part;

[0055] Fig.18 It is a top view of the lower cutter blank being inserted into the lower alloy part;

[0056] Fig.19 It is a rear view of the lower cutter blank being inserted into the lower alloy part;

[0057] Fig. 20 This is the main view after the knife is sharpened;

[0058] Fig.21 This is a top view of the knife after sharpening;

[0059] Fig. 22 This is the rear view after the lower knife is sharpened;

[0060] Fig.23 This is the side view after the lower knife is sharpened;

[0061] Fig.24 It is a partial structural diagram of the electric cutting scissors blade;

[0062] Fig.25 It is a schematic diagram of the structure of the electric cutting scissors blade;

[0063] Fig.26 It is a schematic diagram of the application structure of the electric cutting scissors blade. [Specific implementation method]

[0065] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0066] As attached Fig.24 and attached Fig.25 As shown, a replaceable electric shears blade head comprises a blade head housing 4 and an upper blade 1 and a lower blade 2 mounted on the blade head housing 4, wherein the upper blade 1 comprises an upper blade portion 11 and an upper assembly portion 12 integrally formed with the upper blade portion 11, wherein the upper assembly portion 12 is located at the upper rear portion of the upper blade portion 11; the lower blade 2 comprises a lower blade portion 21, a lower assembly portion 23 and a connecting portion 22 for connecting the lower blade portion 21 and the lower assembly portion 23, wherein the lower blade 2 is integrally formed, and the lower assembly portion 23 is located at the upper rear portion of the lower blade portion 21; the upper assembly portion 12 and the lower assembly portion 23 are respectively mounted in the blade head housing 4, wherein the upper blade portion 11 and the lower blade portion 21 are exposed outside the blade head housing 4, and a wear-resistant gasket 3 located between the upper assembly portion 12 and the lower assembly portion 23 is further mounted in the blade head housing 4, wherein the wear-resistant gasket 3 is made of polytetrafluoroethylene gasket, which can prevent direct friction between the upper assembly portion and the lower assembly portion, thereby further improving the wear resistance and service life of the product.

[0067] In this embodiment, an upper groove 13 is formed at the lower end of the upper blade 11 near the lower blade 2, and an upper alloy member 14 is inserted into the upper groove 13; a lower groove 24 is formed at the upper end of the lower blade 21 near the upper blade 1, and a lower alloy member 25 is inserted into the lower groove 24. The wear resistance of the tool is improved by inserting alloy into the blade, and during use, the two alloys are constantly running in, which can keep the blade sharp and improve the service life of the product.

[0068] In this embodiment, an upper hinge hole 15 is provided on the upper assembly part 12, and a lower hinge hole 26 matched with the upper hinge hole 15 is provided on the lower assembly part 23. The upper assembly part 12, the wear-resistant gasket 3 and the lower assembly part 23 are hinged in the cutter head housing 4 through a hinge column, with a simple structure and ingenious design.

[0069] As attached Figure 1 To Attachment Figure 8 As shown, a method for manufacturing a blade of an electric shears head comprises an upper blade 1 and a lower blade 2, wherein the blade thickness of the upper blade 1 and the lower blade 2 is between 1.5 and 2 mm, and the processing technology of the upper blade 1 comprises the following steps:

[0070] Step 1.1, obtaining an upper blade blank 10 through a blanking process, wherein the upper blade blank 10 comprises an upper blade portion 11 and an upper assembly portion 12 integrally formed with the upper blade portion 11, wherein the upper assembly portion 12 is located above and behind the upper blade portion 11; an assembly hole is formed on the upper assembly portion 12 during the blanking process to facilitate installation of a blade;

[0071] Step 1.2, processing the upper blade portion 11 by a milling process so that an upper groove 13 is formed on a side of the lower end of the upper blade portion 11 close to the lower blade 2;

[0072] Step 1.3, heat treating the upper blade blank 10, wherein the hardness requirement of the heat treatment is HRC55;

[0073] Step 1.4, inserting the upper alloy member 14 into the upper groove 13 of the upper blade portion 11; more specifically, the upper alloy member 14 is fixed in the upper groove 13 by welding;

[0074] Step 1.5, sharpening the upper blade portion 11 to obtain the upper blade 1, wherein the angle between the blade edge of the upper blade 1 and the vertical plane is 45°.

[0075] As attached Fig. 9 To Attachment Fig.23 As shown, the processing technology of the lower knife 2 includes the following steps:

[0076] Step 2.1, obtaining a lower blade blank 20 through a blanking process, wherein the lower blade blank 20 comprises a lower blade portion 21, a lower assembly portion 23, and a connecting portion 22 for connecting the lower blade portion 21 and the lower assembly portion 23, wherein the lower blade blank 20 is integrally formed, and the lower assembly portion 23 is located at the upper rear of the lower blade portion 21; an assembly hole is formed on the lower assembly portion 23 during the blanking process to facilitate installation of a tool;

[0077] Step 2.2, bend the connecting portion 22 laterally so that the lower knife portion 21 and the lower assembly portion 23 are not on the same vertical plane; the angle between the connecting portion 22 and the vertical plane after bending is 49°±1°; it is more conducive to the staggered installation of the lower assembly portion 23 and the upper assembly portion 12; further, the lower assembly portion 23 is inclined, and the angle between the lower assembly portion 23 and the lower knife portion 21 is 3°, which is conducive to the upper knife portion 11 of the upper knife 1 and the lower knife portion 21 of the lower knife 2 being able to tilt 3° towards each other and contact after assembly, so as to better tailor the cloth.

[0078] Step 2.3, processing the lower blade portion 21 by a milling process so that a lower groove 24 is formed on the upper end of the lower blade portion 21 close to the upper blade 1;

[0079] Step 2.4, heat treating the lower blade blank 20, wherein the hardness requirement of the heat treatment is HRC55;

[0080] Step 2.5, inserting the lower alloy member 25 into the lower groove 24 of the lower blade portion 21; more specifically, the lower alloy member 25 is fixed in the lower groove 24 by welding;

[0081] Step 2.6: sharpen the lower knife portion 21 to obtain the lower knife 2, wherein the angle between the edge of the lower knife 2 and the vertical plane is 45°.

[0082] The upper knife created by the present invention is manufactured through the steps of blanking, slot milling, heat treatment, alloy inserting and blade sharpening, and the lower knife is manufactured through the steps of blanking, bending, slot milling, heat treatment, alloy inserting and blade sharpening. The wear resistance of the tool is improved by inserting alloy into the blade, and during use, the two alloys are continuously run-in, which can keep the blade sharp and improve the service life of the product.

[0083] An electric cutting knife equipped with an electric cutting knife head comprises a body 5 and a key switch 6 arranged on the body 5, the front end of the body 5 is detachably connected to the head housing 4, an upper knife 1 and a lower knife 2 are installed on the head housing 4, a driving motor assembly for driving the upper knife 1 and the lower knife 2 to perform cutting movements towards each other and a driving circuit connected to the driving motor assembly are arranged in the body 5, and the key switch 6 is electrically connected to the driving circuit. The upper knife 1 comprises an upper knife portion 11 and an upper assembly portion 12 integrally formed with the upper knife portion 11, wherein the upper assembly portion 12 is located at the upper rear portion of the upper knife portion 11; the lower knife 2 comprises a lower knife portion 21, a lower assembly portion 23 and a connecting portion 22 for connecting the lower knife portion 21 and the lower assembly portion 23, wherein the lower knife 2 is integrally formed, and the lower assembly portion 23 is located at the upper rear portion of the lower knife portion 21; the upper assembly portion 12 and the lower assembly portion 23 are respectively installed in the knife head housing 4, wherein the upper knife portion 11 and the lower knife portion 21 are exposed outside the knife head housing 4, and a wear-resistant gasket 3 located between the upper assembly portion 12 and the lower assembly portion 23 is also installed in the knife head housing 4, wherein the wear-resistant gasket 3 is made of polytetrafluoroethylene gasket, which can prevent direct friction between the upper assembly portion and the lower assembly portion, thereby further improving the wear resistance and service life of the product.

[0084] In this embodiment, an upper groove 13 is formed at the lower end of the upper blade 11 near the lower blade 2, and an upper alloy member 14 is inserted into the upper groove 13; a lower groove 24 is formed at the upper end of the lower blade 21 near the upper blade 1, and a lower alloy member 25 is inserted into the lower groove 24. The wear resistance of the tool is improved by inserting alloy into the blade, and during use, the two alloys are constantly running in, which can keep the blade sharp and improve the service life of the product.

[0085] In this embodiment, an upper hinge hole 15 is provided on the upper assembly part 12, and a lower hinge hole 26 matched with the upper hinge hole 15 is provided on the lower assembly part 23. The upper assembly part 12, the wear-resistant gasket 3 and the lower assembly part 23 are hinged in the cutter head housing 4 through a hinge column, with a simple structure and ingenious design.

Claims

1. A method for manufacturing a blade of an electric shearing scissors head, the head comprising a head housing (4) and an upper blade (1) and a lower blade (2) mounted on the head housing (4), the upper blade (1) comprising an upper blade portion (11) and an upper assembly portion (12) integrally formed with the upper blade portion (11), the upper assembly portion (12) being located above and behind the upper blade portion (11); the lower blade (2) comprising a lower blade portion (21), a lower assembly portion (23) and a connecting portion (22) for connecting the lower blade portion (21) and the lower assembly portion (23), the lower blade (2) being integrally formed, the lower assembly portion (23) being located above and behind the lower blade portion (21); the upper assembly portion (1 2) and a lower assembly part (23) are respectively mounted in the cutter head housing (4), the upper cutter part (11) and the lower cutter part (21) are exposed outside the cutter head housing (4), and a wear-resistant gasket (3) is also mounted in the cutter head housing (4) and located between the upper assembly part (12) and the lower assembly part (23). The cutter head housing (4) comprises an upper cutter (1) and a lower cutter (2), an upper groove (13) is formed at a side of the lower end of the upper cutter part (11) close to the lower cutter (2), and an upper alloy part (14) is embedded in the upper groove (13); a lower groove (24) is formed at a side of the upper end of the lower cutter part (21) close to the upper cutter (1), and a lower alloy part (25) is embedded in the lower groove (24); Features The processing technology of the upper knife (1) comprises the following steps: Step 1.1, obtaining an upper blade blank (10) through a blanking process, wherein the upper blade blank (10) comprises an upper blade portion (11) and an upper assembly portion (12) integrally formed with the upper blade portion (11), wherein the upper assembly portion (12) is located at the upper rear portion of the upper blade portion (11); Step 1.2, processing the upper blade portion (11) by a milling process so that an upper groove (13) is formed on a side of the lower end of the upper blade portion (11) close to the lower blade (2); Step 1.3, heat treating the upper blade blank (10); Step 1.4, inserting the upper alloy piece (14) into the upper groove (13) of the upper blade portion (11); Step 1.5, sharpening the upper blade portion (11) to obtain the upper blade (1); The processing technology of the lower knife (2) comprises the following steps: Step 2.1, obtaining a lower blade blank (20) through a blanking process, wherein the lower blade blank (20) comprises a lower blade portion (21), a lower assembly portion (23), and a connecting portion (22) for connecting the lower blade portion (21) and the lower assembly portion (23), wherein the lower blade blank (20) is integrally formed, and the lower assembly portion (23) is located at the upper rear of the lower blade portion (21); Step 2.2, the connecting portion (22) is transversely bent so that the lower blade portion (21) and the lower assembly portion (23) are not on the same vertical plane, and after the connecting portion (22) is bent, the lower assembly portion (23) is tilted, and the angle between the lower assembly portion (23) and the lower blade portion (21) is 3°, and the angle between the connecting portion (22) and the vertical plane after being bent is 49°±1°; Step 2.3, processing the lower blade portion (21) by a milling process so that a lower groove (24) is formed on a side of the upper end of the lower blade portion (21) close to the upper blade (1); Step 2.4, heat treating the lower blade blank (20); Step 2.5, inserting the lower alloy piece (25) into the lower groove (24) of the lower knife portion (21); Step 2.6: sharpening the lower blade portion (21) to obtain the lower blade (2).

2. The method for manufacturing a blade of an electric shears head according to claim 1, characterized in that In the step 1.4, the upper alloy part (14) is fixed in the upper groove (13) by welding; and in the step 2.5, the lower alloy part (25) is fixed in the lower groove (24) by welding.

3. The method for manufacturing a blade of an electric shears head according to claim 1, characterized in that The upper assembly part (12) is formed with an upper hinge hole (15) during the blanking process, and the lower assembly part (23) is formed with a lower hinge hole (26) during the blanking process.

4. The method for manufacturing a blade of an electric shears head according to claim 1, characterized in that The angle between the cutting edge of the upper knife (1) and the vertical plane in step 1.5 is 45°; the angle between the cutting edge of the lower knife (2) and the vertical plane in step 2.6 is 45°.

5. The method for manufacturing a blade of an electric shears head according to any one of claims 1 to 4, characterized in that The hardness requirement of the heat treatment in step 1.3 and step 2.4 is HRC55.

6. The method for manufacturing a blade of an electric shears head according to claim 1, characterized in that The upper assembly part (12) is provided with an upper hinge hole (15), and the lower assembly part (23) is provided with a lower hinge hole (26) matched with the upper hinge hole (15). The upper assembly part (12), the wear-resistant gasket (3) and the lower assembly part (23) are hinged in the cutter head housing (4) via a hinge column.

7. An electric shears equipped with a blade manufactured by the blade manufacturing method according to claim 1, characterized in that The invention comprises a body (5) and a key switch (6) arranged on the body (5); the front end of the body (5) is detachably connected to a cutter head housing (4); a drive motor assembly for driving an upper knife (1) and a lower knife (2) to perform cutting movements towards each other and a drive circuit connected to the drive motor assembly are arranged in the body (5); and the key switch (6) is electrically connected to the drive circuit.

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