CN103112025A - Cutting knife used for thermal cutting of plastic material - Google Patents
Cutting knife used for thermal cutting of plastic material Download PDFInfo
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- CN103112025A CN103112025A CN2013100387607A CN201310038760A CN103112025A CN 103112025 A CN103112025 A CN 103112025A CN 2013100387607 A CN2013100387607 A CN 2013100387607A CN 201310038760 A CN201310038760 A CN 201310038760A CN 103112025 A CN103112025 A CN 103112025A
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- cutting edge
- cutting
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- plastic material
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- 238000005520 cutting process Methods 0.000 title claims abstract description 97
- 239000000463 material Substances 0.000 title claims abstract description 12
- 238000000227 grinding Methods 0.000 claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000005498 polishing Methods 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The invention relates to a cutting knife used for thermal cutting of plastic material. The cutting knife used for the thermal cutting of the plastic material comprises a blade body, and an inclined double-edged cutting edge which is arranged at the lower end of the blade body, the inclination angle alpha of the cutting edge relative to the horizontal line is 22-28 degrees, and the blade is grinded along the feeding direction of the blade by a grinding appliance to form the cutting edge. The cutting edge at least comprises a first level cutting edge and a second level cutting edge, the angle B1 of the first level cutting edge is 21-23 degrees, and the angle B2 of the second level cutting edge is 8-10 degrees. The plastic material cut by the blade is smooth in end face and free of the appearance of burs and silkings, and cutting end face quality of the material can be improved. Besides, in a cutting process, the resistance stressed on the blade is even, the blade is not prone to tipping, not only is the service life of the blade prolonged, but also cutting noise is reduced observably, and the production environment is improved.
Description
Technical field
The present invention relates to a kind of cutter for the thermal cutting plastic material.
Background technology
Plastic material usually adopts cold cut to cut with saw blade cutting and cuts section bar in process of production; Cold cut is cut the granule that easily produces fragmentation in process and is pulled the section bar cut surface, produces many silkings, and even section bar can large tracts of land break; During the saw blade cutting, the section bar end face can produce a large amount of saw lines and smear metal, and noise is very large.Above-mentioned two kinds of cutting methods can not guarantee the quality of section bar cutting section, and working environment is comparatively abominable.For addressing the above problem, the technical staff has adopted a kind of thermal cutting technology, on cutter one side or knife rest, heater is set, by cutter are heated, section bar and cutting edge mouth contact position generation plastic deformation overcome breaking of section bar cut surface when cutting, and can prevent that smear metal from producing.The common cutting speed of this thermal cutting reaches 2 beats/mins, because cutting speed is fast, it is limited that cutting edge is delivered to the heat of Surface of profile, the section bar cut surface still can stay the cut channels such as burr, make the section bar end face smooth not, affect section quality, in addition due to the existence of cut channel, still produce larger noise when making cutting.
Summary of the invention
The objective of the invention is for the deficiencies in the prior art, a kind of cutter for the thermal cutting plastic material are provided, the section bar cross section of cutting is smooth, burr and silking can not occur, can improve section bar end face quality; And the suffered resistance of blade is even in cutting process, is difficult for tipping, not only can extend its service life, can also reduce significantly cutting noise, improves production environment.
The technical solution used in the present invention is: comprise blade body and be arranged on the two-sided cutting edge of the inclination of blade body lower end; Cutting edge is 22o ~ 28o with respect to horizontal tilt angle alpha; Cutting edge is to form along the grinding of blade direction of feed with apparatus of manual operation.
The inventor is through repeatedly studying the discovery of section bar cutting section, and why smooth not thermal cutting section bar cross section is at present, and main cause is that the cutting edge processing polishing scratch of cutter causes.At present the processing mode of cutting edge routine is: form cutting edge with apparatus of manual operation along the edge direction grinding, therefore inevitably stay on the cutting edge two sides polishing scratch that multiple tracks is parallel to edge direction.Although the polishing scratch that this grinding stays with the naked eye is difficult to find, can clearly observes at microscopically, as shown in Figure 4.These polishing scratch 13 are vertical wavy distribution in cutting edge 11 two sides along blade body 1 direction of feed 7, form zigzag.When cutting, the per pass polishing scratch 13 section bar cut surface that pushes with gap successively and rub causes the section bar cut surface to abrade and form burr, thereby stays the cut channels such as burr at the section bar cutting section, makes the section bar end face smooth not.And the present invention is by changing the grinding direction, make edge surface obtain the polishing scratch consistent with the blade direction of feed, the per pass polishing scratch is the same position of extrudate cutting section continuously, polishing scratch only can stay in the section bar cross section the indiscoverable longitudinal stripe of naked eyes, the section bar cross section burr can not occur, thereby seems smooth.And polishing scratch is the same position of extrudate cut surface continuously, makes in cutting process the suffered resistance of blade even, and blade is difficult for tipping, can extend its service life.
Another people is that after the present invention adopted said structure, cutting noise obviously reduced, and only had 10 decibels, approximately 50 ~ 70 decibels of more conventional blade cuts noise declines unexpectedly.Analyze reason: the one, polishing scratch extrusion pressing type cross section continuously in cutting process, Surface of profile can fully absorb the heat of blade and plastify, and makes frictional force reduce further; The 2nd, above-mentioned vertical wavy gap 14 has been eliminated in the cutting edge side, can not occur the section bar cut surface in cutting process and push with gap the pneumatic noise that enters the air in cutting edge waveform gap 14 and send.
Described cutting edge comprises first order cutting edge and second level cutting edge at least, first order blade angle B
1Be 21o ~ 23 o, second level blade angle B
2Be 8o ~ 10 o.By the slightly large first order cutting edge of angle is set, can increase the thickness of cutting edge, improve cutting edge strength; And the less second level cutting edge of angle is set, the resistance when being conducive to reduce to cut continuously.
Further, the height L of first order cutting edge
1Be 1.8mm ~ 2.2mm, the height L of second level cutting edge
2Be 5mm ~ 8mm, the thickness T of blade body is 1.5mm ~ 1.8mm.
As shown from the above technical solution, the present invention adopts the blade that obtains along blade direction of feed grinding cutting edge, the section bar cross section of cutting smooth, burr and silking can not appear, can improve section bar cross section quality; And in cutting process, the suffered resistance of blade is even, and blade is difficult for tipping, not only can extend its service life, can also reduce significantly cutting noise, improves production environment.
Description of drawings
Fig. 1 is blade structure schematic diagram of the present invention.
Fig. 2 is along the profile of M-M line in Fig. 1.
Fig. 3 is section bar device for thermally cutting structural representation.
Fig. 4 is existing blade cutting edge E place partial structurtes enlarged diagram in Fig. 2.
The specific embodiment
As depicted in figs. 1 and 2, have installing hole 12 on blade body 1, blade body 1 lower end arranges the two-sided cutting edge 11 of inclination; Cutting edge 11 is 22o ~ 28o with respect to horizontal tilt angle alpha.Described cutting edge 11 comprises first order cutting edge 111 and second level cutting edge 112; First order cutting edge 111 angles are the included angle B of two sides
1Be 21o ~ 23 o, the height L of first order cutting edge 111
1Be 1.8mm ~ 2.2mm; Second level cutting edge 112 angle B
2Be 8o ~ 10 o, the height L of second level cutting edge 112
2Be 5mm ~ 8mm, the thickness T of blade body 1 is 1.5mm ~ 1.8mm.Between first order cutting edge 111 and second level cutting edge 112, between second level cutting edge 112 and and blade body 1 between have the R smooth transition.
Described first order cutting edge 111, second level cutting edge 112 are to be that arrow 7 direction grindings in Fig. 3 form with apparatus of manual operation along blade 1 direction of feed.
As shown in Figure 3, blade body 1 is fixed on knife rest 4 by strap 2 and bolt 3, makes the up and down cutting movement with knife rest 4, and the section bar 6 that is placed on the workbench 5 of below is cut.Knife rest one side is provided with the infrared heating device of blade heating, does not draw in infrared heating device figure, (uses formula to change according to section bar) when the blade temperature is raised to 120 ℃～160 ℃ of left and right, can cut.
Claims (3)
1. the cutter that are used for the thermal cutting plastic material comprise blade body (1) and are arranged on the two-sided cutting edge (11) of the inclination of blade body lower end; It is characterized in that: cutting edge (11) is 22o ~ 28o with respect to horizontal tilt angle alpha; Described cutting edge (11) is to form along the grinding of blade direction of feed with apparatus of manual operation.
2. cutter for the thermal cutting plastic material according to claim 1, it is characterized in that: described cutting edge (11) comprises first order cutting edge (111) and second level cutting edge (112) at least, first order cutting edge (111) angle B
1Be 21o ~ 23 o, second level cutting edge (112) angle B
2Be 8o ~ 10 o.
3. the cutter for the thermal cutting plastic material according to claim 2, is characterized in that: the height L of first order cutting edge (111)
1Be 1.8mm ~ 2.2mm, the height L of second level cutting edge (112)
2Be 5mm ~ 8mm, the thickness T of described blade body (1) is 1.5mm ~ 1.8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310038760.7A CN103112025B (en) | 2013-01-31 | 2013-01-31 | Cutting knife used for thermal cutting of plastic material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310038760.7A CN103112025B (en) | 2013-01-31 | 2013-01-31 | Cutting knife used for thermal cutting of plastic material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103112025A true CN103112025A (en) | 2013-05-22 |
| CN103112025B CN103112025B (en) | 2015-05-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310038760.7A Expired - Fee Related CN103112025B (en) | 2013-01-31 | 2013-01-31 | Cutting knife used for thermal cutting of plastic material |
Country Status (1)
| Country | Link |
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| CN (1) | CN103112025B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104772787A (en) * | 2014-01-10 | 2015-07-15 | 速特系统技术股份公司 | Blade, in particular vibrating blade, for use in mechanical cutting method, for cutting sandwich boards |
| CN107263030A (en) * | 2017-06-26 | 2017-10-20 | 昆山双路自动化科技有限公司 | A kind of fervent envelope machine is with cutting envelope knife structure and its processing method |
| CN110000819A (en) * | 2019-04-13 | 2019-07-12 | 张家港市文锋机械有限公司 | A kind of cutter of non-sawdust lastic pipe cutting |
| CN114147292A (en) * | 2021-12-08 | 2022-03-08 | 安徽中意机床制造有限公司 | Section bar cutting device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3555950A (en) * | 1968-06-08 | 1971-01-19 | Philips Corp | Apparatus for cutting a drawing in a layer of synthetic material |
| KR100206640B1 (en) * | 1993-06-30 | 1999-07-01 | 하퍼 랄프 이. | Method of sharpening cutting blades |
| CN2743103Y (en) * | 2004-11-12 | 2005-11-30 | 曾迅 | Electric heating cutter |
| CN101804645A (en) * | 2010-04-22 | 2010-08-18 | 郭永广 | Cutting mechanism of soft material product |
| CN202428012U (en) * | 2012-01-09 | 2012-09-12 | 山东大学 | Device for applying supersonic vibration along feed direction to assist milling surface texturing |
| CN203045781U (en) * | 2013-01-31 | 2013-07-10 | 铜陵格瑞特挤出技术有限公司 | Cutting knife for hot cutting plastic profiles |
-
2013
- 2013-01-31 CN CN201310038760.7A patent/CN103112025B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3555950A (en) * | 1968-06-08 | 1971-01-19 | Philips Corp | Apparatus for cutting a drawing in a layer of synthetic material |
| KR100206640B1 (en) * | 1993-06-30 | 1999-07-01 | 하퍼 랄프 이. | Method of sharpening cutting blades |
| CN2743103Y (en) * | 2004-11-12 | 2005-11-30 | 曾迅 | Electric heating cutter |
| CN101804645A (en) * | 2010-04-22 | 2010-08-18 | 郭永广 | Cutting mechanism of soft material product |
| CN202428012U (en) * | 2012-01-09 | 2012-09-12 | 山东大学 | Device for applying supersonic vibration along feed direction to assist milling surface texturing |
| CN203045781U (en) * | 2013-01-31 | 2013-07-10 | 铜陵格瑞特挤出技术有限公司 | Cutting knife for hot cutting plastic profiles |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104772787A (en) * | 2014-01-10 | 2015-07-15 | 速特系统技术股份公司 | Blade, in particular vibrating blade, for use in mechanical cutting method, for cutting sandwich boards |
| CN104772787B (en) * | 2014-01-10 | 2019-06-04 | 速特系统技术股份公司 | Cut knife, especially vibrating blade used in the machine cuts method of sandwich plate |
| CN107263030A (en) * | 2017-06-26 | 2017-10-20 | 昆山双路自动化科技有限公司 | A kind of fervent envelope machine is with cutting envelope knife structure and its processing method |
| CN110000819A (en) * | 2019-04-13 | 2019-07-12 | 张家港市文锋机械有限公司 | A kind of cutter of non-sawdust lastic pipe cutting |
| CN114147292A (en) * | 2021-12-08 | 2022-03-08 | 安徽中意机床制造有限公司 | Section bar cutting device |
| CN114147292B (en) * | 2021-12-08 | 2024-05-03 | 安徽中意机床制造有限公司 | Profile cutting device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103112025B (en) | 2015-05-13 |
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Effective date of registration: 20160526 Address after: 244061 No. 951 Taishan Avenue, Tongling Economic Development Zone, Anhui, 13-2 Patentee after: Tongling Betterfuse Technology Co.,Ltd. Address before: 244061 room 951, No. 13-2, Taishan Avenue, Tongling Economic Development Zone, Tongling, Anhui Patentee before: TONGLING GREAT EXTRUSION TECH. CO.,LTD. |
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Effective date of registration: 20190827 Address after: 244061 No. 951 Taishan Avenue, Tongling Economic Development Zone, Anhui, 13-2 Patentee after: TONGLING GREAT EXTRUSION TECH. CO.,LTD. Address before: 244061 No. 951 Taishan Avenue, Tongling Economic Development Zone, Anhui, 13-2 Patentee before: Tongling Betterfuse Technology Co.,Ltd. |
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