CN111872981A - Moving knife, blade component and forming process of moving knife - Google Patents
Moving knife, blade component and forming process of moving knife Download PDFInfo
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- CN111872981A CN111872981A CN201911237977.4A CN201911237977A CN111872981A CN 111872981 A CN111872981 A CN 111872981A CN 201911237977 A CN201911237977 A CN 201911237977A CN 111872981 A CN111872981 A CN 111872981A
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- movable blade
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000008569 process Effects 0.000 title claims abstract description 19
- 238000005520 cutting process Methods 0.000 claims abstract description 39
- 230000003068 static effect Effects 0.000 claims abstract description 35
- 238000005452 bending Methods 0.000 claims abstract description 11
- 238000010008 shearing Methods 0.000 claims description 21
- 238000000227 grinding Methods 0.000 claims description 17
- 230000000670 limiting effect Effects 0.000 claims description 10
- 238000005530 etching Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 5
- 210000004209 hair Anatomy 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
- B26B19/02—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the reciprocating-cutter type
- B26B19/04—Cutting heads therefor; Cutters therefor; Securing equipment thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
- B26B19/02—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the reciprocating-cutter type
- B26B19/04—Cutting heads therefor; Cutters therefor; Securing equipment thereof
- B26B19/044—Manufacture and assembly of cutter blocks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
- B26B19/02—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the reciprocating-cutter type
- B26B19/04—Cutting heads therefor; Cutters therefor; Securing equipment thereof
- B26B19/06—Cutting heads therefor; Cutters therefor; Securing equipment thereof involving co-operating cutting elements both of which have shearing teeth
Abstract
The invention provides a movable knife, a blade assembly and a forming process of the movable knife, wherein the blade assembly comprises a movable knife, a static knife and an elastic supporting assembly for pressing the movable knife at constant pressure, the movable knife is provided with two movable knife walls which are arranged oppositely, one end of each of the two movable knife walls is connected to form a movable knife tooth part, and the movable knife tooth part is provided with movable knife teeth; the two movable blade walls are formed by bending a movable blade body, the movable blade body is provided with a central line parallel to the moving direction of the movable blade, the movable blade body is provided with a plurality of strip-shaped holes side by side along the central line, and the movable blade teeth are formed between the corresponding strip-shaped holes after the movable blade is folded along the central line. The movable cutter tooth part of the blade component is constantly attached to the cutting part, the seamless attaching design can cut shorter hairs on the premise of ensuring the normal use of the blade component, and the cutting blade component is good in cutting effect and high in comfort level.
Description
Technical Field
The invention relates to a hair cutting tool, in particular to a movable knife, a blade component and a forming process of the movable knife.
Background
A blade set, a hair cutting appliance and an associated method of manufacture are disclosed in the patent application No. 201510185524.7. In particular, the blade set comprises a stationary blade and a movable blade, wherein the movable blade can be driven in a reciprocating manner with respect to the stationary blade for cutting hair. The fixed blade comprises an upper fixed blade and a lower fixed blade, a slot is formed between the two fixed blades, and the movable blade is inserted into the slot and driven by a driving mechanism to reciprocate along the slot to form shearing with the fixed blade. In order to achieve a better cutting effect by cutting shorter hairs, a supporting structure (a fixed blade seat) used in cooperation with a fixed blade needs to be arranged to increase the strength of the fixed blade, so that the phenomenon that the moving blade shakes or jumps when the moving blade is used due to the fact that the fixed blade bends and deforms in the direction perpendicular to the moving direction of the moving blade is avoided. In contrast, the fixed blade is formed in an unclosed sheet structure, and the support structure is used for sealing the opening of the sheet structure and enhancing the strength of the fixed blade. Thus arranged, a mounting space is formed between the fixed blade and the supporting structure, and the movable blade is arranged in the mounting space in a reciprocating manner. Due to the high precision required by the razor in cutting, the requirements on the fit of the various elements in the razor blade set are high, and even if the precision required is a few tenths of a millimeter worse, the hair may not be cut and may be pulled or jump. The die opening cost and the difficulty of the manufacturing process are multiplied for each added element. As can be appreciated from the foregoing description of the prior art, none of the existing razor blade sets addresses the problems of the strength, cutting effect, and manufacturing process of the razor at the same time.
Disclosure of Invention
In order to solve the technical problems, the invention provides a movable knife, a blade assembly and a forming process of the movable knife, and the blade assembly can simultaneously solve a plurality of problems in the prior art.
A movable knife is provided with two movable knife walls which are arranged oppositely, one ends of the two movable knife walls are connected to form a movable knife tooth part, and the movable knife tooth part is provided with movable knife teeth; the two movable blade walls are formed by bending a movable blade body, the movable blade body is provided with a central line parallel to the moving direction of the movable blade, the movable blade body is provided with a plurality of strip-shaped holes side by side along the central line, and the movable blade teeth are formed between the corresponding strip-shaped holes after the movable blade is folded along the central line.
Furthermore, the two movable knife walls are mutually attached, and the section of the movable knife tooth part in the direction vertical to the central line is in an inverted U shape.
Furthermore, a gap is formed between the two movable knife walls, and the section of the movable knife tooth part in the direction vertical to the central line is in an inverted U shape.
Furthermore, each movable cutter tooth is provided with a movable cutter tooth root and a movable cutter tooth end edge which are opposite, one end, far away from the central line, of each movable cutter tooth is the movable cutter tooth root, two cutting surfaces symmetrically arranged along the central line are formed at the movable cutter tooth end edges, and each cutting surface is in a triangular shape inclining towards the movable cutter tooth root from the central line.
The present invention also provides a blade assembly comprising:
the fixed cutter is provided with two opposite fixed cutter walls and an installation cavity defined by the two fixed cutter walls, at least one opening is formed between the two fixed cutter walls, one ends of the two fixed cutter walls are connected to form a shearing part, and the shearing part is provided with a burr inlet to form fixed cutter teeth;
a moving blade, as described in any of the above;
the elastic supporting component is connected with the static knife or the movable knife and has elastic force perpendicular to the moving direction of the movable knife, and the end edge of the movable knife tooth part of the movable knife is constantly attached to the shearing part under the action of the elastic force.
Furthermore, two static knife walls of the static knife are arranged in parallel, the opening is formed on one side opposite to the shearing part, and the section of the shearing part in the direction perpendicular to the moving direction of the movable knife is in an inverted U shape.
Further, the blade assembly further comprises a support, the support is provided with a mounting hole, and the static blade wall extends into the mounting hole and is connected with the elastic supporting assembly.
Furthermore, the blade component also comprises a movable blade fixing frame which is provided with a movable blade fixing hole, the movable blade fixing frame is connected with the elastic supporting component, the movable blade fixing hole extends along the movable blade moving direction, and the movable blade extends into the movable blade fixing hole and reciprocates under the guidance of the movable blade fixing hole.
Further, the blade assembly further comprises a movable blade fixing frame, the movable blade fixing frame is provided with a movable blade fixing hole, the movable blade fixing frame is connected with the support, the movable blade fixing hole is opposite to and communicated with the mounting hole, the movable blade fixing hole extends along the movable blade moving direction, and the movable blade extends into the movable blade fixing hole and moves in a reciprocating mode under the guidance of the movable blade fixing hole.
Furthermore, the elastic support component is connected with the static knife in a limiting manner, so that the static knife is fixed relative to the elastic support component in the direction of moving the movable knife vertically and in the moving direction of the movable knife, the elastic support component is provided with at least one elastic part, and the elastic part presses the movable knife in the direction of moving the movable knife vertically so that the tail end of the movable knife tooth part of the movable knife is abutted against the inner wall of the shearing part of the static knife.
Furthermore, the elastic support assembly is also provided with a support seat, the elastic piece is arranged on one side of the support seat facing the static knife, the support seat is provided with two support walls, and the static knife wall is correspondingly connected with the support walls.
Furthermore, the support is connected with the supporting seat, the outside of the support is provided with a buckle structure at a position corresponding to each supporting wall, and the supporting walls are provided with a connecting structure matched with the buckle structure.
Furthermore, move the sword mount and be located the mounting hole, move the sword mount and set up direction locating part, move the sword mount and have two around move the sword fixed orifices and relative direction lateral wall that sets up, direction locating part is moved the sword fixed orifices protrusion by the direction lateral wall that corresponds.
Furthermore, the sections of the static cutter teeth and the movable cutter teeth along the moving direction of the vertical movable cutter are in an inverted U shape, and the fit clearance between two sides of the U shape is 0-0.06 mm.
The invention also provides a forming process of the movable knife, which comprises the following steps:
selecting a sheet-shaped section with the blank thickness of more than or equal to 0.08mm, and carrying out stamping blanking treatment according to a preset size;
etching, namely performing cutting edge etching treatment on the blank punched in the step one;
and step three, bending the blank in the step two, forming movable cutter teeth by the bent blank, and performing cutting edge treatment on the movable cutter teeth to form the movable cutter.
And step four, performing heat treatment at the temperature of about 800-1800 ℃ for 10-15 minutes.
Further, a fourth step is provided after the third step, and the moving blade formed in the third step is subjected to fine grinding treatment.
And furthermore, a fifth step is further arranged after the fourth step, and the moving blade formed in the fourth step is cleaned.
The invention has the beneficial effects that: according to the invention, the movable knife is folded and formed, the triangular cutting surface is formed at the end edge of the tooth of the movable knife, and the cutting edge formed by the triangle on the cutting surface improves the sharpness of the movable knife, so that the hair can be shaved more quickly and accurately; the blade assembly enables the movable blade tooth part to be constantly attached to the shearing part on the movable blade under the action of the elastic force of the elastic supporting assembly, the shearing design of seamless attachment can cut shorter hairs on the premise of ensuring the normal use of the blade assembly, and the shearing effect is good; the seamless connection ensures that the blade component can not cause hair pulling during shaving, and the comfort level is high; the movable knife fixing frame is arranged to support the movable knife and the static knife, so that the rigidity of the movable knife and the static knife is improved, the movable knife and the static knife are prevented from being deformed due to extrusion during installation and use, the stability of the whole structure is improved, and the assembly and process management and control are facilitated; the support is arranged to further position the static knife and the movable knife in the assembling process, and the support forms a protective support for the peripheries of the static knife and the movable knife in the assembling process, so that the stability of the whole structure is further improved; that is to say, compared with the traditional blade assembly, the blade assembly provided by the invention has the advantages that the structural design is simpler, the assembly process is simpler, the manufacturing cost is lower, and a better cutting effect can be realized; in addition, the U-shaped matching reduces the contact area of the movable cutter and the static cutter under the condition of ensuring seamless connection, thereby reducing the friction between the movable cutter and the static cutter, and the shaver has low temperature rise, small current and longer service life in the working process.
Drawings
Fig. 1 is a perspective view of a shaving head of the razor of the present invention.
Fig. 2 is an exploded perspective view of a razor head according to the present invention.
Fig. 3 is a front view of a razor head according to the invention.
Fig. 4 is a sectional view taken along the direction B-B in fig. 3.
Fig. 5 is a schematic structural view of the movable blade before folding.
Fig. 6 is a schematic structural view of the movable blade after being folded.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 to 6, a first preferred embodiment of the moving blade and the blade assembly thereof according to the present invention is described in detail below:
referring to fig. 1, there is shown a razor head formed by connecting a blade assembly 1 according to the present invention to a connecting member 2, the connecting member 2 being connected to a driving source for moving the movable blade. The driving source may be a motor (not shown in the drawings provided by the present invention), and the blade assembly 1 includes a stationary blade 3, a movable blade 4, and an elastic support assembly 5. Specifically, the stationary blade 3 has two opposite stationary blade walls 31 and an installation cavity 32 surrounded by the two stationary blade walls 31, at least one opening is formed between the two stationary blade walls 31, one ends of the two stationary blade walls 31 are connected to form a shearing portion 33, and the shearing portion 33 is provided with a burr to form a stationary blade tooth 35; the movable knife 4 is positioned in the mounting cavity 32 and reciprocates relative to the fixed knife 3, the movable knife 4 forms a movable knife tooth part 41 at a position corresponding to the shearing part 33, and the movable knife tooth part 41 is provided with movable knife teeth 42; the elastic supporting component 5 is connected with the stationary knife 3, the elastic supporting component 5 is provided with an elastic part, the elastic part 52 is provided with an elastic force vertical to the moving direction of the movable knife 4, and the end edge of the movable knife tooth part 41 of the movable knife 4 is constantly attached to the shearing part 33 under the action of the elastic force. The back degree of the static knife is 0.1-0.8 mm.
Further, the two stationary blade walls 31 of the stationary blade 3 are arranged in parallel, the opening is formed on the side opposite to the cutting portion 33, and the cutting portion 33 has an inverted U-shaped cross section in the direction perpendicular to the moving direction of the movable blade 4 with reference to the direction shown in fig. 2 and 3. The section of the movable cutter teeth 42 along the direction vertical to the moving direction of the movable cutter 4 is inverted U-shaped. Under the action of the elastic force of the elastic support component 5, the arc-shaped part of the U-shaped movable cutter tooth 42 with the inverted section is closely attached to the U-shaped shearing part 33 with the inverted section, so that the curved surface type hair shaving at the whole U-shaped end part is realized, the applicability is stronger, and the comfort level is higher. The fit clearance between the movable cutter teeth 42 and the two sides of the U of the cutting part 33 is 0-0.06 mm, and due to the clearance arrangement, hair can not be napped due to overlarge gaps when entering normally.
Specifically, the movable blade 4 may be a single sheet-shaped structure, and the movable blade teeth 42 are directly formed at one end of the movable blade that is matched with the cutting portion 33 of the stationary blade 3. In addition, the movable blade 4 may be configured to have two opposite movable blade walls 43, the two movable blade walls 43 are located inside the two stationary blade walls 31, and one end of each of the two movable blade walls 43 is connected to form the movable blade tooth portion 41. The two movable blade walls 43 can be formed by bending a movable blade 44 body in a U shape, and the two movable blade walls 43 are spaced from each other, that is, a gap is formed between the two movable blade walls; it is also possible to fold a movable blade body 44 to form the movable blade, and the two movable blade walls 43 are overlapped with each other, that is, they are attached to each other.
Specifically, as shown in fig. 4 and 5, two movable blade walls 43 are shown to be formed by folding a movable blade body 44: the movable blade body 44 is provided with a central line parallel to the moving direction of the movable blade 4, the movable blade body 44 is provided with a plurality of strip holes 62 in parallel along the central line, and the movable blade teeth 42 are formed between the corresponding strip holes after the movable blade body 44 is folded along the central line. Each movable cutter tooth 42 is provided with a movable cutter tooth root part 60 and a movable cutter tooth end edge 61 which are opposite, the movable cutter tooth root part 60 is arranged at one end of the movable cutter tooth 42 far away from the central line, two cutting surfaces 45 symmetrically arranged along the central line are formed at the movable cutter tooth end edge 61, and the cutting surfaces 45 are upright triangles inclined from the central line to the movable cutter tooth root part 60. That is to say, the movable blade 4 formed by folding forms a triangular cutting surface 45 at the end edge 61 of the movable blade tooth, and the cutting edge formed by the triangle on the cutting surface 45 can improve the sharpness of the movable blade, so that the hair can be shaved more quickly and accurately.
Further, in order to strengthen the stability of the whole structure and improve the strength of the movable blade 4 and the static blade 3, the blade assembly 1 further comprises a support 21, the support 21 is connected with the elastic support assembly 5, the support 21 is provided with a mounting hole 22, and the static blade wall 31f is extended into the mounting hole and connected with the elastic support assembly 5. The material of the bracket 21 and the material of the joint of the elastic supporting component 5 and the bracket 21 can be both metal, and the two are formed by welding; or both are made of plastic materials and are fixed by hot melting welding; or the bracket 21 is made of non-metal material such as plastic, and the connecting part of the elastic supporting component 5 and the bracket 21 is made of metal, alloy, stainless steel or the like, and the two are detachably connected by arranging the connecting structure 57. In this embodiment, the support 21 is made of plastic, the connection portion between the elastic support component 5 and the support 21 is made of metal material, the support 21 is provided with a convex buckle 23, and the elastic support component 5 is provided with a hole (or a groove) matched with the buckle 23, so as to realize detachable buckle connection between the elastic support component and the buckle. In practical implementation, the bracket 21 may be provided with a slot or a hole, and the elastic support component 5 may be provided with a structure such as a buckle 23 or a hook leg, which is matched with the slot or the hole.
Specifically, the elastic support assembly 5 further has a support seat 51, the elastic member 52 is mounted on one side of the support seat 51 facing the stationary blade 3, the support seat 51 has two flexible support walls 53, and the stationary blade wall 31 is correspondingly connected to the support walls 53. The stationary blade wall 31 and the corresponding support wall 53 may be welded or snap-fit connected, etc. In this embodiment, the stationary blade wall 31 and the support wall 53 are fixed by welding.
The support 21 is connected with the elastic support assembly 5 through the support seat 51, the outside of the support 21 is provided with a buckle structure at a position corresponding to each support wall 51, and the support walls 51 are provided with a connecting structure matched with the buckle structure. Specifically, as described above, the snap structure may be a protruding snap 23 disposed on the outer side of the bracket, and the connection structure may be a through hole 57 formed in the flexible support wall 53.
In order to increase the rigidity of the stationary knife 3 and the movable knife 4 and prevent the stationary knife 3 and the movable knife 4 from bending and deforming due to the extrusion of external force during installation or use, the blade assembly 1 further comprises a movable knife fixing frame 46, and the movable knife fixing frame 46 comprises a movable knife fixing hole 47. The movable blade fixing frame 46 may be connected to the elastic support assembly 5 or to the support 21. The movable blade fixing hole 47 extends along the moving direction of the movable blade 4, and the movable blade 4 extends into the movable blade fixing hole 47 and reciprocates under the guidance of the movable blade fixing hole 47. Specifically, in the present embodiment, as shown in fig. 2, the movable blade holder 46 is connected to the support 21, and similarly, the movable blade holder and the support may be welded, riveted, fastened, and the like. In this embodiment, the two are detachably connected by a snap connection: the bracket 21 has a side wall 24 surrounding the mounting hole 22, the side wall 24 is provided with a convex buckle 241 in a protruding manner, and the movable blade fixing frame 46 is provided with a connecting hole 461 matched with the convex buckle 25.
The movable blade fixing hole 47 is opposite to and communicated with the mounting hole 22, the movable blade fixing hole 47 extends along the moving direction of the movable blade 4, and the movable blade 4 extends into the movable blade fixing hole 47 and moves in a reciprocating manner under the guidance of the movable blade fixing hole 47.
The movable blade fixing frame 46 is located in the mounting hole 22 of the bracket 21, and the movable blade fixing frame 46 is provided with a guide limiting piece 48 for guiding the movable blade 4 to move. The movable blade holder 46 has two guide sidewalls 49 surrounding the movable blade holder hole 47 and disposed opposite to each other, and the guide stoppers 48 protrude from the corresponding guide sidewalls 49 toward the movable blade holder hole 47. The number of the guide limiting parts 4 is at least two, the two guide limiting parts 48 are respectively positioned on the corresponding guide side walls 49, and the two guide limiting parts 48 can be arranged oppositely or alternatively arranged along the moving direction of the movable knife 4. In the embodiment shown in fig. 2, four wire position-limiting members 48 are provided as an example, and the four guiding position-limiting members 48 are arranged in pairs; similarly, the four guiding position-limiting members 48 may be alternately arranged along the moving direction of the movable blade 4. The movable blade 4 is retained between the guide retainers 48. After the arrangement, the movable knife 4 is more stable in the moving process, the phenomena of shaking and knife jumping cannot occur, and the hair is cut more safely; in addition, after the guide limiting pieces 48 are arranged, the moving knife 4 and the static knife 3 are aligned transversely more accurately, and the size is controlled better.
As can be seen from the above description of the embodiments of the present invention, the elastic support component 5 is connected to the stationary blade 3 in a limiting manner, so that the stationary blade 3 is fixed relative to the elastic support component 5 in the direction perpendicular to the moving direction of the moving blade 4 and in the moving direction along the moving blade 4. In this embodiment, the elastic support assembly 5 has two elastic members 52 (using springs as elastic members), and the elastic members 52 press the movable blade 4 in a direction perpendicular to the moving direction of the movable blade 4, so that the end of the movable blade tooth portion 41 of the movable blade 4 abuts against the inner wall of the stationary blade cutting portion 33. The inner wall of the static knife cutting part 33 is provided with an arc-shaped wall 34 attached to the movable knife tooth part 41. After the elastic support assembly 5 is fixed relative to the stationary blade 3, the elastic member 52 is compressed to accumulate elastic potential energy, so that the elastic member 52 constantly presses the movable blade 4 in a direction perpendicular to the moving direction of the movable blade 4. The U-shaped matching ensures that the movable blade 4 and the static blade 3 are in seamless connection, the contact area is reduced, the friction between the movable blade 4 and the static blade 3 is reduced, the temperature rise of the shaver in the working process is low, the current is low, and the service life is longer.
The invention also provides a forming process of the movable knife, which is described by the following specific embodiment:
example 1
In this embodiment, the molding process includes the following steps:
step one, selecting a sheet-shaped section made of metal and with the blank thickness of 0.08mm, carrying out stamping blanking processing according to a preset size, and stamping the sheet-shaped section to form a long hole as shown in the attached figure 4;
etching, namely performing cutting edge etching treatment on the blank punched in the step one;
step three, bending the blank in the step two, folding the bent blank to form two mutually-jointed movable knife walls, adopting stamping equipment and a related forming matched die during bending, wherein the tonnage of the stamping equipment is about 45 tons, the long holes 62 form movable knife teeth 42 after being folded along with the blank, and cutting the movable knife teeth 41 to form the movable knife of the invention;
step four, heat treatment is carried out, wherein the heat treatment temperature is about 1000 ℃, and the time is about 10-15 minutes;
step five, carrying out fine grinding treatment on the cutting edge of the movable cutter 4 formed in the step four, wherein a knife grinder is used for grinding in the grinding treatment;
and step six, cleaning the movable knife 4 formed in the step four.
It should be noted that step five is an optional step rather than a necessary step, and that if the stamping effect in step three is not ideal, e.g. smoothness is not high enough or accuracy is not as desired, the blade needs to be ground.
Example 2
In this embodiment, the molding process includes the following steps:
step one, selecting a sheet-shaped section with a blank thickness of 0.8mm and made of a metal material, performing stamping blanking processing according to a preset size, and stamping the sheet-shaped section to form a long hole 62 shown in the attached drawing 4:
etching, namely performing cutting edge etching treatment on the blank punched in the step one;
step three, bending the blank in the step two, wherein a stamping device and a related forming matched die are adopted during bending, the tonnage of the stamping device is about 45 tons, the bent blank is folded to form two pairs of movable knife walls 43, the two movable knife walls 43 are connected in an arc shape, so that the movable knife 4 is in a U shape in the side view direction, namely the two movable knife walls 43 are spaced, the long holes 62 form movable knife teeth 42 after being bent along with the blank, and cutting edge processing is carried out on the movable knife teeth 41 to form the movable knife 4;
step four, heat treatment is carried out, wherein the heat treatment temperature is about 1000 ℃, and the time is about 10-15 minutes;
step five, the cutting edge of the moving blade 4 formed in the step four is finely ground, a knife grinder is used for grinding in the grinding treatment, a grinding wheel of the knife grinder is a semi-hard grinding wheel, the granularity of the grinding wheel is 240 meshes to 600 meshes, the diameter of the grinding wheel is 400 mm, the width of a grinding layer of the grinding wheel is 5 mm, the rotating speed of the grinding wheel is 2860 revolutions per minute to 3000 revolutions per minute during grinding, the tangential feeding speed of the blade in the grinding wheel is 1 mm per second during grinding, the vertical feeding amount is 0.05 mm to 0.1 mm per time, and tap water or special cooling water is used for cooling.
Likewise, step five is preferable, and when the stamping precision of the thicker material is not high, the precision, smoothness and the like of the further ground product are better.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (17)
1. A moving knife is characterized in that: the movable knife is provided with two movable knife walls which are arranged oppositely, one ends of the two movable knife walls are connected to form a movable knife tooth part, and the movable knife tooth part is provided with movable knife teeth; the two movable blade walls are formed by bending a movable blade body, the movable blade body is provided with a central line parallel to the moving direction of the movable blade, the movable blade body is provided with a plurality of strip-shaped holes side by side along the central line, and the movable blade teeth are formed between the corresponding strip-shaped holes after the movable blade is folded along the central line.
2. The moving blade according to claim 1, characterized in that: the two movable cutter walls are mutually attached, and the section of the movable cutter tooth part in the direction vertical to the central line is in an inverted U shape.
3. The moving blade according to claim 1, characterized in that: a gap is formed between the two movable knife walls, and the section of the movable knife tooth part in the direction vertical to the central line is in an inverted U shape.
4. The moving blade according to claim 2, characterized in that: each movable cutter tooth is provided with a movable cutter tooth root and a movable cutter tooth end edge which are opposite, one end, far away from the central line, of each movable cutter tooth is the movable cutter tooth root, the cross section of each movable cutter tooth end edge is a cutting surface symmetrically arranged along the central line, and each cutting surface is a triangle inclining towards the movable cutter tooth root from the central line.
5. A blade assembly, comprising:
the fixed cutter is provided with two opposite fixed cutter walls and an installation cavity defined by the two fixed cutter walls, at least one opening is formed between the two fixed cutter walls, one ends of the two fixed cutter walls are connected to form a shearing part, and the shearing part is provided with a burr inlet to form fixed cutter teeth;
a moving blade according to any one of claims 1 to 4;
the elastic supporting component is connected with the static knife or the movable knife and has elastic force perpendicular to the moving direction of the movable knife, and the end edge of the movable knife tooth part of the movable knife is constantly attached to the shearing part under the action of the elastic force.
6. The blade assembly of claim 5, wherein: two static knife walls of the static knife are arranged in parallel, the opening is formed on one side opposite to the shearing part, and the section of the shearing part in the direction perpendicular to the moving direction of the movable knife is in an inverted U shape.
7. The blade assembly of claim 5, wherein: the blade assembly further comprises a support, the support is provided with a mounting hole, and the static blade wall extends into the mounting hole and is connected with the elastic supporting assembly.
8. The blade assembly of claim 5, wherein: the blade component further comprises a movable blade fixing frame, the movable blade fixing frame is provided with a movable blade fixing hole, the movable blade fixing frame is connected with the elastic supporting component, the movable blade fixing hole extends along the movable blade moving direction, and the movable blade extends into the movable blade fixing hole and reciprocates under the guidance of the movable blade fixing hole.
9. The blade assembly of claim 5, wherein: the blade component further comprises a movable blade fixing frame, the movable blade fixing frame is provided with a movable blade fixing hole, the movable blade fixing frame is connected with the support, the movable blade fixing hole is opposite to and communicated with the mounting hole, the movable blade fixing hole extends along the movable blade moving direction, and the movable blade extends into the movable blade fixing hole and moves in a reciprocating mode under the guidance of the movable blade fixing hole.
10. The blade assembly of any one of claims 5 to 9, wherein: the elastic support component is connected with the static knife in a limiting mode, so that the static knife is fixed relative to the elastic support component in the direction of moving the knife vertically and in the moving direction of the moving knife, the elastic support component is provided with at least one elastic part, and the elastic part presses the moving knife in the direction of moving the knife vertically so that the tail end of the moving knife tooth part of the moving knife abuts against the inner wall of the static knife shearing part.
11. The blade assembly of claim 10, wherein: the elastic support assembly is further provided with a support seat, the elastic piece is installed on one side, facing the static knife, of the support seat, the support seat is provided with two support walls, and the static knife wall is correspondingly connected with the support walls.
12. The blade assembly of claim 10, wherein: the support is connected with the supporting seat, the positions of the outer side of the support corresponding to the supporting walls are provided with buckle structures, and the supporting walls are provided with connecting structures matched with the buckle structures.
13. The blade assembly of claim 8 or 9, wherein: the movable knife fixing frame is located in the mounting hole, the movable knife fixing frame is provided with a guide limiting part, the movable knife fixing frame is provided with two guide side walls which surround the movable knife fixing hole and are arranged oppositely, and the guide limiting part protrudes from the corresponding guide side walls towards the movable knife fixing hole.
14. The blade assembly of claim 5, wherein: the section of the static knife teeth and the section of the movable knife teeth along the moving direction of the vertical movable knife are both in an inverted U shape, and the fit clearance between the two sides of the U shape is 0-0.06 mm.
15. A forming process of a movable cutter is characterized by comprising the following steps:
selecting a sheet-shaped section with the blank thickness of more than or equal to 0.08mm, and carrying out stamping blanking treatment according to a preset size;
etching, namely performing cutting edge etching treatment on the blank punched in the step one;
step three, bending the blank in the step two, forming movable cutter teeth by the bent blank, and performing cutting edge treatment on the movable cutter teeth part to form the movable cutter;
and step four, performing heat treatment at the temperature of about 800-1800 ℃ for 10-15 minutes.
16. The forming process of the movable blade according to claim 15, wherein: and step four is also arranged after the step three, and the moving knife formed in the step three is subjected to fine grinding treatment.
17. The forming process of the movable blade according to claim 16, wherein: and step five is also arranged after the step four, and the moving blade formed in the step four is cleaned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911237977.4A CN111872981A (en) | 2019-12-05 | 2019-12-05 | Moving knife, blade component and forming process of moving knife |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911237977.4A CN111872981A (en) | 2019-12-05 | 2019-12-05 | Moving knife, blade component and forming process of moving knife |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111872981A true CN111872981A (en) | 2020-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911237977.4A Pending CN111872981A (en) | 2019-12-05 | 2019-12-05 | Moving knife, blade component and forming process of moving knife |
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| Country | Link |
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| CN (1) | CN111872981A (en) |
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| CN114888852A (en) * | 2022-05-10 | 2022-08-12 | 中山寰亚刀具有限公司 | Shaver with double-layer elastic structure as tool bit |
| CN115091512A (en) * | 2022-07-18 | 2022-09-23 | 浙江海顺电工有限公司 | Static blade and manufacturing method thereof |
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