CN102797121A - Line shearing tool for two-needle sewing machine - Google Patents
Line shearing tool for two-needle sewing machine Download PDFInfo
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- CN102797121A CN102797121A CN2012103057159A CN201210305715A CN102797121A CN 102797121 A CN102797121 A CN 102797121A CN 2012103057159 A CN2012103057159 A CN 2012103057159A CN 201210305715 A CN201210305715 A CN 201210305715A CN 102797121 A CN102797121 A CN 102797121A
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- knife
- moving knife
- stationary knife
- steel sheet
- sewing machine
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Abstract
The invention relates to a line shearing tool for a two-needle sewing machine, which belongs to the technical field of sewing machines. The line shearing tool comprises a fixed knife and a moving knife, wherein the lower surface of one side of a cutting edge part of the fixed knife is connected with a tungsten steel sheet; the front angle of the tungsten steel sheet forms a cutting edge of the fixed knife; the upper surface of the moving knife corresponding to the fixed knife is a plane matched with the cutting edge of the fixed knife; a through hole is formed in the upper surface of the moving knife; and the through hole has a certain angle with the upper surface of the moving knife, so as to form a cutting edge of the moving knife. The line shearing tool for the two-needle sewing machine, provided by the invention, has the advantages of good wear resistance between the moving knife and the fixed knife, good line shearing effect and long service life and is suitable for sewing machine line shearing tools of like types; and a gap between the moving knife and the fixed knife can be kept within a design range for a long time.
Description
Technical field
The invention belongs to the sewing machine technique field, refer in particular to a kind of trimming cutter of two-needle sewing machine.
Background technology
At present; The trimming cutter of two-needle sewing machine mostly is made up of moving knife and stationary knife, and the blade of stationary knife is fixed on the downside of needle plate down, and the blade of moving knife is fixed on the upside of rotating shuttle frame up; Stationary knife and moving knife form scissor trimming cutter; Its weak point is: the one, and ancistroid,ancistrous moving knife blade is arranged on the boss of moving knife head, because the area of boss is little, is easy in the process that cooperates trimming with stationary knife to reduce owing to rubbing the height of boss; And then causing fit clearance excessive, the section of trimming is irregular even can not line be cut off; The 2nd, stationary knife is processed by single tool steel, because the hardness of the tool steel of selecting for use is less, is easy to lose efficacy because of wearing and tearing, if whole stationary knife is selected the higher tool steel of hardness for use, then cost is higher.
Summary of the invention
The trimming cutter that the purpose of this invention is to provide a kind of two-needle sewing machine of wear-resistant, long service life.
The objective of the invention is to realize like this:
The trimming cutter of two-needle sewing machine; Comprise stationary knife and moving knife, the lower surface of blade one side of said stationary knife is connected with the wolfram steel sheet, and the anterior angle of wolfram steel sheet forms the blade of stationary knife; The plane of upper surface with the corresponding moving knife of stationary knife for cooperating with the stationary knife blade; The upper surface of described moving knife is provided with through hole, through hole with the upper surface of moving knife certain angle is arranged, to form the blade of moving knife.
The angle of the leading flank of the through hole of above-mentioned moving knife and the upper surface of moving knife is less than or equal to 90 degree.
The cross section of the through hole of above-mentioned moving knife is that arbitrary curve is or/and the closed curve that line segment forms.
The upper surface of the moving knife of above-mentioned through hole rear side is provided with the groove that connects the edge, back.
The lower surface of above-mentioned stationary knife is connected with the wolfram steel sheet: between stationary knife and the wolfram steel sheet through being welded to connect or being connected or connecting or connect through interference fit through inlaying through bonding.
The concrete structure of interference fit is between above-mentioned stationary knife and the wolfram steel sheet: stationary knife is provided with groove, and the wolfram steel sheet is embedded in the groove on the stationary knife.
The concrete structure of interference fit is between above-mentioned stationary knife and the wolfram steel sheet: the wolfram steel sheet is provided with groove, and stationary knife is embedded in the groove on the wolfram steel sheet.
The blade of above-mentioned stationary knife is fixed on the downside of needle plate down, and the blade of described moving knife is fixed on the upside of rotating shuttle frame up, and stationary knife and moving knife form scissor trimming cutter.
The present invention compares the outstanding and beneficial technical effects of prior art:
1, the wolfram steel sheet is set as blade on the stationary knife of the present invention; Near the blade of moving knife upper surface is cancelled intrinsic boss; Change horizontal plane into, the mar proof of moving knife and stationary knife all is greatly improved, and the gap between moving knife and the stationary knife can remain in the scope of design for a long time; Trimming is effective, long service life.
2, of the present inventionly be applicable to Sewing machines trimming cutter of the same type.
Description of drawings
Fig. 1 is the front view of stationary knife of the present invention.
Fig. 2 is that A-A of Fig. 1 is to cutaway view.
Fig. 3 is the schematic perspective view of stationary knife of the present invention.
Fig. 4 is that B-B of Fig. 5 is to cutaway view.
Fig. 5 is the front view of moving knife of the present invention.
Fig. 6 is the schematic perspective view of moving knife of the present invention.
The specific embodiment
The present invention is further described with specific embodiment below in conjunction with accompanying drawing, referring to Fig. 1-6:
The trimming cutter of two-needle sewing machine; Comprise stationary knife 10 and moving knife 20, the lower surface of blade one side of said stationary knife 10 is connected with wolfram steel sheet 13, and the anterior angle of wolfram steel sheet 13 forms the blade 131 of stationary knife 10; The plane of upper surface 21 with stationary knife 10 corresponding moving knife 20 for cooperating with stationary knife blade 131; The upper surface 21 of described moving knife 20 is provided with through hole 24, and through hole 24 has certain angle with upper surface 21 with moving knife 20, to form the blade 23 of moving knife 20.
The leading flank 22 of the through hole 24 of above-mentioned moving knife 20 is less than or equal to 90 degree with the included angle B of the upper surface 21 of moving knife 20.
The cross section of the through hole 24 of above-mentioned moving knife 20 is that arbitrary curve is or/and the closed curve that line segment forms; The leading flank 22 of present embodiment through hole 24 is for to become certain included angle A by two Plane intersects, and included angle A is 60-120 degree, and the best is 80-100 degree, angle of cut directed forward, and the frontal plane 22 of moving knife blade 23 forms fan-shaped through hole 24 with the arcwall face of rear side 26.
The upper surface 21 of the moving knife 20 of above-mentioned through hole 24 rear sides is provided with the groove 25 that connects the edge, back.
The lower surface of above-mentioned stationary knife 10 is connected with wolfram steel sheet 13: between stationary knife 10 and the wolfram steel sheet 13 through being welded to connect or being connected or connecting or connect through interference fit through inlaying through bonding.
The concrete structure of interference fit is between above-mentioned stationary knife 10 and the wolfram steel sheet 13: stationary knife 10 is provided with groove, and the wolfram steel sheet is embedded in the groove on the stationary knife 10.
The concrete structure of interference fit is between above-mentioned stationary knife 10 and the wolfram steel sheet 13: wolfram steel sheet 13 is provided with groove, and stationary knife 10 is embedded in the groove on the wolfram steel sheet 13.
The blade 131 of above-mentioned stationary knife 10 is fixed on the downside of needle plate down through the installing hole 11 of its afterbody; The blade 23 of described moving knife 20 is fixed on the upside of rotating shuttle frame up through the installing hole 27 of its afterbody; The profile of described moving knife 20 is the fish hook shape; The blade 23 of moving knife 20 is arranged on the through hole 24 of ancistroid,ancistrous head, and stationary knife 10 forms scissor trimming cutter with moving knife 20.
The foregoing description is merely preferred embodiment of the present invention, is not to limit protection scope of the present invention according to this, so: all equivalences of doing according to structure of the present invention, shape, principle change, and all should be covered by within protection scope of the present invention.
Claims (8)
1. the trimming cutter of two-needle sewing machine; Comprise stationary knife and moving knife, it is characterized in that: the lower surface of blade one side of said stationary knife is connected with the wolfram steel sheet, and the anterior angle of wolfram steel sheet forms the blade of stationary knife; The plane of upper surface with the corresponding moving knife of stationary knife for cooperating with the stationary knife blade; The upper surface of described moving knife is provided with through hole, through hole with the upper surface of moving knife certain angle is arranged, to form the blade of moving knife.
2. the trimming cutter of two-needle sewing machine according to claim 1 is characterized in that: the angle of the leading flank of the through hole of said moving knife and the upper surface of moving knife is less than or equal to 90 degree.
3. the trimming cutter of two-needle sewing machine according to claim 1 is characterized in that: the cross section of the through hole of said moving knife is that arbitrary curve is or/and the closed curve that line segment forms.
4. the trimming cutter of two-needle sewing machine according to claim 1 is characterized in that: the upper surface of the moving knife of said through hole rear side is provided with the groove that connects the edge, back.
5. the trimming cutter of two-needle sewing machine according to claim 1 is characterized in that: the lower surface of described stationary knife is connected with the wolfram steel sheet and is: between stationary knife and the wolfram steel sheet through being welded to connect or being connected or connecting or connect through interference fit through inlaying through bonding.
6. the trimming cutter of two-needle sewing machine according to claim 5 is characterized in that: the concrete structure of interference fit is between described stationary knife and the wolfram steel sheet: stationary knife is provided with groove, and the wolfram steel sheet is embedded in the groove on the stationary knife.
7. the trimming cutter of two-needle sewing machine according to claim 5 is characterized in that: the concrete structure of interference fit is between described stationary knife and the wolfram steel sheet: the wolfram steel sheet is provided with groove, and stationary knife is embedded in the groove on the wolfram steel sheet.
8. according to the trimming cutter of each described two-needle sewing machine of claim 1-7; It is characterized in that: the blade of described stationary knife is fixed on the downside of needle plate down; The blade of described moving knife is fixed on the upside of rotating shuttle frame up, and stationary knife and moving knife form scissor trimming cutter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103057159A CN102797121A (en) | 2012-08-24 | 2012-08-24 | Line shearing tool for two-needle sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103057159A CN102797121A (en) | 2012-08-24 | 2012-08-24 | Line shearing tool for two-needle sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102797121A true CN102797121A (en) | 2012-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103057159A Pending CN102797121A (en) | 2012-08-24 | 2012-08-24 | Line shearing tool for two-needle sewing machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN102797121A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110042580A (en) * | 2019-06-04 | 2019-07-23 | 上海博岙机电制造有限公司 | A kind of movable cutter mechanism of the high trolley flat cutter trimming of modified |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2209684Y (en) * | 1994-11-15 | 1995-10-11 | 黄雨霖 | Improved thread-severing cutter for industrial sewing machine |
| EP1992726A1 (en) * | 2007-05-15 | 2008-11-19 | Dürkopp Adler Aktiengesellschaft | Sewing machine |
| CN101469493A (en) * | 2007-12-28 | 2009-07-01 | 顾飞龙 | Lower thread cutter of sewing machine |
| CN201416092Y (en) * | 2009-05-06 | 2010-03-03 | 浙江方正电机股份有限公司 | Round knife drive mechanism for automatic shear line sewing machine |
| CN202786715U (en) * | 2012-08-24 | 2013-03-13 | 新杰克缝纫机股份有限公司 | Thread cutting knife tool of double-needle sewing machine |
-
2012
- 2012-08-24 CN CN2012103057159A patent/CN102797121A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2209684Y (en) * | 1994-11-15 | 1995-10-11 | 黄雨霖 | Improved thread-severing cutter for industrial sewing machine |
| EP1992726A1 (en) * | 2007-05-15 | 2008-11-19 | Dürkopp Adler Aktiengesellschaft | Sewing machine |
| CN101469493A (en) * | 2007-12-28 | 2009-07-01 | 顾飞龙 | Lower thread cutter of sewing machine |
| CN201416092Y (en) * | 2009-05-06 | 2010-03-03 | 浙江方正电机股份有限公司 | Round knife drive mechanism for automatic shear line sewing machine |
| CN202786715U (en) * | 2012-08-24 | 2013-03-13 | 新杰克缝纫机股份有限公司 | Thread cutting knife tool of double-needle sewing machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110042580A (en) * | 2019-06-04 | 2019-07-23 | 上海博岙机电制造有限公司 | A kind of movable cutter mechanism of the high trolley flat cutter trimming of modified |
| CN110042580B (en) * | 2019-06-04 | 2023-12-22 | 上海博岙机电制造有限公司 | Improved generation high platform truck flat knife cuts line's movable knife mechanism |
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Application publication date: 20121128 |