CN101122087B - Cutting knife - Google Patents
Cutting knife Download PDFInfo
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- CN101122087B CN101122087B CN2007101408840A CN200710140884A CN101122087B CN 101122087 B CN101122087 B CN 101122087B CN 2007101408840 A CN2007101408840 A CN 2007101408840A CN 200710140884 A CN200710140884 A CN 200710140884A CN 101122087 B CN101122087 B CN 101122087B
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- shearing knife
- cutting
- shearing
- knife
- groove
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- Nonmetal Cutting Devices (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
The present invention provides a shearing knife which can restrain the temperature ascending of the shearing knife at the shearing part and prevents the melting of the stacked sheet material. A groove (10) is arranged at the main body part (5) in the shearing knife (1). The groove (10) is provided with a depth-definite part (11) with a definite depth and a top end part (12) and a lower end part (13) where the depth changes at the two ends. The automatic shearing machine does shearing at the state that the sheared material is attracted at the lower side of the shearing table where the sheared material is placed and is fixed at the shearing table, so the sucked air passes through the groove (10) and can do cooling with high efficiency. As the opening of the groove (10) is at the back side of the shearing knife (1), the opening does not contact the sheared material and can ensure the access of the air-sucking. With arranging groove (10) at the back side of the shearing knife (1), the shearing knife (1) has the advantages of increased cooling area, shortened distance of cooling surface and heating part and effective cooling.
Description
Technical field
The present invention relates to the employed shearing knife such as automatic cutting machines of cutting sheet material under the lamination state.
Background technology
In the prior art, in the automatic cutting machines when remaining on the Cutting table, according to predefined data cutting sheet material, be extensive use of the equipment (for example with reference to patent documentation 1) of the form that the shearing knife that moves up and down is housed to the sheet material of lamination state.Shearing knife hangs down from the cutting head that can move along the surface two dimension of Cutting table, and the sheet material that simultaneously connects the lamination state is simultaneously used the point of a knife side cutting sheet material of a side that is located at wedge-shaped cross.The point of a knife of shearing knife or move up and down with the state of being close to sheet material with the side of point of a knife adjacency produces frictional heat.When the generation quantitative change of frictional heat for a long time, the temperature of the sheet material around the shearing knife rises.Under the situations as sheet material such as sticking lining of using composite fibre materials such as nylon or polyester or starching, there is the danger of cutting position fusion.When the fusion of cutting position, become the sheet separation of lamination state sheet material one by one just to become difficult, and then be to separate it.
The point of a knife of patent documentation 1 disclosed shearing knife is the shearing knife pointed nose that is attended by plane cutting blade face in both sides, the cross sectional shape with approximate wedge shape.On the side of cross sectional shape, between cutting blade face and main part, form recess.By this recess is set, the rigidity of shearing knife is descended, can reduce by the volume of grind section the mitigation of resistance when realizing milling time shortening and cutting.Also recorded and narrated and can expect to have following effect, that is, received the sucking action of the sheet material be used for keeping cutting, flowed into by recess from air outside, during the cooling cutting because the part that rubs and generate heat, to prevent sheet material fusion each other.
Also announced the flat material cutting machine (for example with reference to patent documentation 2) that in the support unit that supports the impact tool that constitutes shearing knife, is provided with the cooling road, cools off impact tool and support unit to cooling road importing cold wind.In addition, also announced such cloth cutting hollow Multiple hole knife, it forms hollow with shearing knife, is provided with the hole that is communicated with hollow space in the side, to the hollow space cool-air feed and make it to emit from the hole, and cooling cutting part (for example with reference to patent documentation 3).And then, announced that also the side in the cloth shearing knife is provided with the technology of jog (for example with reference to patent documentation 4).In the specification of patent documentation 4, also put down in writing and do not contacted under the effect of following reciprocating air flow and the scheme of fusion can not take place with blank.
Patent documentation 1: Japanese kokai publication hei 5-84693 communique
Patent documentation 2: Japanese kokai publication sho 62-213994 communique
Patent documentation 3: TOHKEMY 2000-42992 communique
Patent documentation 4: Japan opens flat 2-107487 communique in fact
The problem that invention will solve
As patent documentation 1, between main part, be provided with the structure of recess from the cutting blade face, it is, also insufficient by the cooling that the air by recess carries out though it is abundant to have reduced to have been shortened by the volume of grind section the effect of the resistance when thereby milling time relaxes cutting.Particularly as shown in Figure 7 as patent documentation 1, if shearing knife is charged into and is cut material and one side moves up and down the one side words of advancing, then cut the blank face that the quilt that splits cuts material and be close to, thereby air tails off from the inflow of recess along the inclined-plane that comprises the shearing knife recess.If recess is strengthened, though the inflow of air is increased, owing to descend as the rigidity of shearing knife, thereby have restriction.
In patent documentation 2, even can cool off the part that supports shearing knife by support unit, also just in the inside that the cold wind flow direction is cut material and the cutting part of shearing knife pointed nose.As patent documentation 3, when shearing knife was formed hollow, processing difficulties and manufacturing cost rose.As patent documentation 4, can think that for the concavo-convex cloth shearing knife that is formed for producing air flow in the side rigidity descends when forming recess, processing difficulties and manufacturing cost rise when forming protuberance.
Summary of the invention
The object of the present invention is to provide a kind of shearing knife, its temperature that can be suppressed at the shearing knife of cutting part rises, and prevents the sheet material fusion of lamination.
The method of dealing with problems
Shearing knife of the present invention is the straight knife shape with wedge shape section, connect the sheet material that is placed on the lamination on the platform from the top, reciprocating motion limit, limit is used in the point of a knife cutting sheet material of the side formation of wedge shape section, it is characterized in that, in scope, has groove in the inside of this wedge shape section at the opposite side opening of this wedge shape section with this point of a knife cutting sheet material part.
In addition, the invention is characterized in that described wedge shape section has the certain part of thickness at described opposite side; Described groove forms in the certain part of this thickness.
In addition, the invention is characterized in that described groove forms certain degree of depth in described scope, the degree of depth forms in the mode that the degree of depth reduces along with leaving this scope in the upper end of this scope.
According to the present invention, because the inside of the wedge shape section of the shearing knife of the point of a knife cutting sheet material that forms in a side that is used in wedge shape section has the groove at the opposite side opening, so just can cool off shearing knife from the inside of wedge shape section as long as air etc. flow in groove.Owing to have groove at least in the scope of the part of shearing knife cutting sheet material, flow air descends the temperature of shearing knife from the inside cooling of shearing knife wedge shape section in the groove so can be used in, and prevents the fusion to cutting lamination sheet material partly.Because groove is at the opposite side opening of wedge shape section, so easily by the formation such as machining from the shearing knife opposite side.
In addition, according to the present invention, owing to the inside formation of the certain part of groove thickness in wedge shape section, so even grind the point of a knife part of wedge shape section one side, groove can be not influential to grinding yet.
In addition, according to the present invention, owing to groove so form, be the degree of depth of upper end of scope of limit reciprocating motion sideline judge snip material along with the scope of leaving reduces, so the intensity of shearing knife can sharply not change, the cutting rim charge also can be removed well.Because in the scope by reciprocating motion cutting sheet material part, flute profile becomes certain degree of depth,, can remove inwall by groove outside scope in the heat of the surface of shearing knife generation so the air that flow in the groove is successfully circulated.Compared with only form certain depth, when the mode that reduces with the degree of depth in the upper end at least forms, processing also become easy.
Description of drawings
Fig. 1 is the partial side view of expression as the basic structure of the shearing knife 1 of an embodiment of the present invention.
Fig. 2 is the sectional view of the shearing knife 21 of the shearing knife 1 of Fig. 1 and another embodiment.
To be reduced representation be installed in the local side cross-sectional, view of the state in the cutting 30 of automatic cutting machines to the shearing knife 1,21 of Fig. 1 to Fig. 3.
Fig. 4 is that expression relatively has slotless 10 and the figure of an example of the meltbility of the blank that causes in the shearing knife 1 of Fig. 1.
Fig. 5 is that expression relatively has slotless 10 and the figure of another example of the meltbility of the blank that causes in the shearing knife 1 of Fig. 1.
Description of reference numerals
1,21 shearing knife
3 shearing knife pointed noses
4 cutting blade faces
5 main parts
10 grooves
11 degree of depth, one bonding part
12 upper ends
13 bottoms
20 knife guides
30 cutting heads
32 blanks
The specific embodiment
Fig. 1 represents the basic structure as the shearing knife 1 of an embodiment of the present invention.Shearing knife 1 is the straight knife shape, has crush-cutting sword 2 at front end, has shearing knife pointed nose 3 in a side.Crush-cutting sword 2 is used for carrying out bur from the surface that is cut material.By being cut material by behind the bur, shearing knife pointed nose 3 moves up and down and cutting is cut material.On the two sides of shearing knife pointed nose 3, be respectively equipped with cutting blade face 4 as the shearing knife 1 at top.In shearing knife 1, the peak side of shearing knife pointed nose 3 becomes main part 5.Between main part 5 and cutting blade face 4, be provided with the recess 6 as described in the patent documentation 1.The structure of shearing knife 1 so far is the same with patent documentation 1 described shearing knife.In addition, though record has been omitted on the top of shearing knife 1, be formed with linking portion to the mechanism that drives up and down.
In the shearing knife 1 of Fig. 1, be provided with groove 10 at main part 5.Groove 10 at the opposite side of shearing knife 1, be the peak side opening, have the certain degree of depth of the degree of depth one bonding part 11 and in the upper end 12 and the bottom 13 of its two ends change in depth.The degree of depth one bonding part 11 is provided with accordingly with the scope that is cut material in shearing knife pointed nose 3 and cutting blade face 4, by the actual cutting of the reciprocating motion of above-below direction.As change in depth, when forming groove 10, the cutter cutting with plate-like can easily apply as upper end 12 and bottom 13.Also can prolong the degree of depth one bonding part 11 to the lower end, not set end 13.
The cross sectional shape of the shearing knife 1 of Fig. 2 presentation graphs 1 and the shearing knife 21 of another embodiment.The cross sectional shape of the part of the degree of depth one bonding part 11 of Fig. 2 (a) and Fig. 2 (d) expression formation groove 10.The cross sectional shape of shearing knife 1,21 roughly is to be the wedge-type shape at top with shearing knife pointed nose 3, and main part 5 has certain width t.Two cutting blade faces 4 between main part 5 and the shearing knife pointed nose 3 tilt, so that narrow down at shearing knife pointed nose 3 sides interval in opposite directions.The interval L at the shearing knife pointed nose 3 of shearing knife 1,21 and the back side of main part 5 is about 5～10mm.The width t of main part 5 is about 2～3mm.The height A of main part 5 is about 2～4mm, and is bigger than width t.In the degree of depth one bonding part 11 degree of depth of groove for example be main part 5 height A about 60～80%.The width of groove 10 be main part 5 width t about 30～50%.Why making the width t and the height A of the width of groove and depth ratio main part 5 little, is in order to keep the rigidity of main part 5.
Shown in Fig. 2 (a), in the main part 5 of shearing knife 1, become about 40% the mode of the width t of main part 5 with for example about 70% the degree of depth, the width that becomes its height A, form the degree of depth one bonding part 11 of groove 10.
As drawing shown in the oblique line among Fig. 2 (b), shearing knife 1 limit grinding edge face 4 is used with the sharpness limit of keeping cutter.Even the degree of depth of groove one bonding part 11 is formed in the scope that such cutting blade face 4 shown in dotted line retreats to some extent owing to grind, the rigidity of shearing knife 1 does not also descend.That is, shown in Fig. 2 (c), move up and down, need possess sufficient rigidity for the part of clamping by knife guides 20 though main part 5 limits of shearing knife 1 are supported and accepted leading edge by knife guides 20.
Fig. 2 (d) expression is as the cross sectional shape of the shearing knife 21 of another embodiment of the present invention.Shearing knife 21 is being used when thinner than shearing knife 1 by the thickness that cut material, and the width t of main part 5 is smaller than the width t of shearing knife 1.Between cutting blade face 4 and main part 5, be provided with recess 6.Height A with regard to the relative main part 5 of the degree of depth of the degree of depth one bonding part 11 of groove, shearing knife 21 is the same with shearing knife 1, but the width of the degree of depth one bonding part 11 for example is about 0.35t when being benchmark with the width t of main part 5, and is also littler than the width of the degree of depth one bonding part 11 of shearing knife 1.
Fig. 3 reduced representation is installed in shearing knife 1,21 state in the cutting 30 of automatic cutting machines.The driving mechanism that shearing knife 1,21 usefulness are located at the upper side of having omitted illustrated cutting 30 moves up and down, and the figure expression drops near the state the upper/lower positions.Lower end in cutting 30 is provided with presser feet 31, pins the surface as the blank 32 that is cut material.Blank 32 by sheet materials such as the lamination multi-disc cloth and silks that cuts material is placed down on the Cutting table at the state with non-gas permeability sheet material covering surfaces, and is fixing from the below attraction of Cutting table.The surface of Cutting table is formed by brush 33, and when shearing knife 1,21 invaded in the brush 33, the bristle of brush 33 was partly kept out of the way.Shearing knife 1,21 makes shearing knife 1,21 limits cut the blank 32 of lamination state with the sideline judge that moves up and down at a high speed.Cutting 30 can move along the surface two dimension of Cutting table and be toward or away from relative to the Cutting table surface and move.In cutting 30, also be equipped with and make shearing knife 1,21 rotate, change the mechanism of cutting direction around the axle of the above-below direction of figure.In automatic cutting machines, according to predefined cutting data, limit control cutting 30 move and the cutting of blank 32 is carried out on the direction limit of shearing knife 1,21.
The inside of the cutting above presser feet 31 30, also is provided with and carries out the grinding that point of a knife grinds and roll 34 with the mode of the motion up and down knife guides 20 to its channeling conduct with supporting shearing knife 1,21 limit, limit.Roll 34 grinding as grinding, under the cutting of each set a distance or each such as fix time at predetermined conditions, under the state that shearing knife 1,21 is pulled out from cutting material, shearing knife 1,21 is moved up and down and the cutting scope is carried out when being subjected to grinding 34 the effect of rolling equably.
Fig. 4 represents to have in the comparison shearing knife 1 example of meltbility of the blank of slotless 10.As the blank 32 of sheet material, lamination 20 opening and closing become leather, use the ProductName P-CAM182 of Shima Seiki Mfg. Ltd as automatic cutting machines, and at this moment, thickness is the product of 15mm when being used attraction by cutting material.Shearing knife 1 is for the figure of comb shape among the cutting figure, keeps temporary transient bur by the state in cutting material, and just as unicursal, moves a week along clockwise direction from the starting point of lower-left.The width W of the figure integral body of comb shape is 200mm, and whole height H is 105mm, and the width w of the toothed portion of comb shape is that the height h of the toothed portion of 13mm, comb shape is 97mm.If the cutting speed as the translational speed of cutting head is 16m/min, making under the about cutting condition that moves up and down for 2000 times of shearing knife per minute, use shearing knife 1, then such as (a) shown in, the whole figure of cutting well.What confirmed is, in the shearing knife that cutting groove 10 is not set, like that, in cutting fusion has taken place midway shown in (b).Even without groove 10 is set, the cutting figure is circled.But in the cutting position of " * " mark, the sheet material of lamination is in fusion up and down and separation difficulty and even can't separate; In the cutting position of " Δ " mark, the fusion that produces separable degree.But as have or not the no fusion clipping distance that produces according to groove 10,, in (b) of slotless, be 655mm, can confirm to be provided with the effect of groove 10 with respect to the 1963mm in (a) that groove 10 is arranged.
Fig. 5 represents comparison another example according to the meltbility of the blank that slotless 10 is arranged in the shearing knife 1.If make cutting speed be lowered into 12m/min from Fig. 4, make under the about cutting condition that moves up and down for 3000 times of shearing knife per minute and use shearing knife 1, confirmed that the scope of being represented by " zero " mark can have fusion ground and do not carry out cutting in (a).But this no fusion clipping distance is 435mm.Shown in (b), like that, when slotless, but no fusion clipping distance is shortened to 210mm.But the length of so no fusion clipping distance is influential to the productivity ratio of cutting.But when no fusion clipping distance more in short-term, need reduce the lamination thickness (number) of blank 32 or promote griffing of shearing knife from blank 32 for cooling, required time of cutting is elongated.
As Fig. 4 and shown in Figure 5, in shearing knife 1, because side is provided with groove 10 overleaf, so can suppress the degree that temperature rises to the generation fusion that cut material by the air cooling shearing knife 1 of circulation in groove 10.Also can expect same effect for the shearing knife 21 shown in Fig. 2 (d).In automatic cutting machines and since from place the Cutting table cut material below attract and carried out cutting by under the state that cuts material in that Cutting table is fixing, so air-breathingly in groove 10, pass through, can cool off efficiently.Because groove 10 openings are the rear side in shearing knife 1,21, so as patent documentation 1 as shown in Figure 7, not cut material with quilt contacts, and can guarantee air-breathing path.By the rear side in shearing knife 1,21 groove 10 is set, the area of dissipation of shearing knife 1,21 increases, and the distance of radiating surface and heating portion also shortens, and can cool off effectively.
In addition, the groove of more than having represented to be located on the main part 5 of shearing knife 1,21 10 is situations of chamfered groove, but the cross section of groove 10 also can be as the V-type groove bottom width reduce or as U type groove the bottom surface be curved surface.These cross sectional shapes can change to some extent according to the point of a knife shape of cutting element.
Claims (3)
1. shearing knife, it is the straight knife shape with wedge shape section, runs through the sheet material that is placed on the lamination on the platform from the top, and the one side one side that moves back and forth is used in the point of a knife that a side of wedge shape section forms sheet material is carried out cutting, it is characterized in that,
In scope, has groove in the inside of this wedge shape section at the opposite side opening of this wedge shape section with the part of this point of a knife cutting sheet material.
2. shearing knife as claimed in claim 1 is characterized in that, described wedge shape section has the certain part of thickness at described opposite side, and described groove is formed in the certain part of this thickness.
3. shearing knife as claimed in claim 1 or 2 is characterized in that, described groove forms certain degree of depth in described scope, forms the degree of depth in the upper end of this scope and reduces along with leaving this scope.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006-219356 | 2006-08-11 | ||
| JP2006219356 | 2006-08-11 | ||
| JP2006219356A JP4848228B2 (en) | 2006-08-11 | 2006-08-11 | Cutting blade |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101122087A CN101122087A (en) | 2008-02-13 |
| CN101122087B true CN101122087B (en) | 2011-04-13 |
Family
ID=39084578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101408840A Expired - Fee Related CN101122087B (en) | 2006-08-11 | 2007-08-10 | Cutting knife |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4848228B2 (en) |
| CN (1) | CN101122087B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5466857B2 (en) * | 2009-01-29 | 2014-04-09 | 株式会社島精機製作所 | Cutting data editing apparatus and method |
| CN102286878B (en) * | 2011-08-09 | 2014-01-01 | 卿太辉 | Thread trimmer |
| CN102717085A (en) * | 2012-07-05 | 2012-10-10 | 安徽奥力机械科技有限公司 | Multifunctional self-heat dissipation combination cutter of lead granulation machine |
| CN104032560B (en) * | 2014-06-06 | 2018-03-13 | 长园和鹰智能科技有限公司 | Numerical control cutter, cut cutter head and the method for cooling down cut-off knife |
| CN104088129B (en) * | 2014-06-30 | 2019-01-25 | 拓卡奔马机电科技有限公司 | Cutting cut-off knife cooling body |
| CN106003202B (en) * | 2016-07-02 | 2018-07-17 | 长园和鹰智能科技有限公司 | A kind of cutter for cutting low melting material |
| KR20210093421A (en) * | 2020-01-17 | 2021-07-28 | 산진 옵토일렉트로닉스 (쑤저우) 컴퍼니 리미티드 | Cutting apparatus for film |
| CN111286962B (en) * | 2020-04-06 | 2021-03-30 | 马鞍山市恒利达机械刀片有限公司 | Batch cutting tool for medical non-woven fabric mask and using method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4545275A (en) * | 1983-02-07 | 1985-10-08 | Gerber Garment Technology, Inc. | Blade for severing fibrous material |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3803602A (en) * | 1972-07-07 | 1974-04-09 | Rca Corp | Digital range rate computer |
| JPH06198594A (en) * | 1992-12-29 | 1994-07-19 | Roland D G Kk | Cutter and cutting plotter using it |
| JPH06198595A (en) * | 1992-12-29 | 1994-07-19 | Roland D G Kk | Cutter and cutting plotter using it |
-
2006
- 2006-08-11 JP JP2006219356A patent/JP4848228B2/en not_active Expired - Fee Related
-
2007
- 2007-08-10 CN CN2007101408840A patent/CN101122087B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4545275A (en) * | 1983-02-07 | 1985-10-08 | Gerber Garment Technology, Inc. | Blade for severing fibrous material |
Non-Patent Citations (4)
| Title |
|---|
| JP特开2000-42992A 2000.02.15 |
| JP特开平5-261695A 1993.10.12 |
| JP特开平5-84693A 1993.04.06 |
| JP特开平6-198595A 1994.07.19 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101122087A (en) | 2008-02-13 |
| JP4848228B2 (en) | 2011-12-28 |
| JP2008044030A (en) | 2008-02-28 |
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Granted publication date: 20110413 Termination date: 20170810 |