CN104775240B - A kind of use in sewing machine moving knife and sewing machine - Google Patents
A kind of use in sewing machine moving knife and sewing machine Download PDFInfo
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- CN104775240B CN104775240B CN201510137757.XA CN201510137757A CN104775240B CN 104775240 B CN104775240 B CN 104775240B CN 201510137757 A CN201510137757 A CN 201510137757A CN 104775240 B CN104775240 B CN 104775240B
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- line
- moving knife
- hook portion
- upper thread
- knife
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Abstract
The present invention relates to a kind of use in sewing machine moving knife and sewing machine, moving knife includes moving knife body, the knife portion being formed on the upper surface of described moving knife body, the bottom line hook portion and upper thread hook portion being formed on the side adjacent with described upper surface of described moving knife body, the center of described bottom line hook portion and described knife portion are centrally formed the first line, the center of described upper thread hook portion and described knife portion are centrally formed the second line, and the first described line and the angle of the second described line are more than or equal to 5 °.The present invention is by the first line of control and the angle of the second line so that the distance of bottom line and upper thread becomes big, when upper thread is drawn out, bottom line will not be driven to be drawn out together, from the sewing without under the influence of once, improves operating efficiency.
Description
Technical field
The invention belongs to sewing machine technique field, and in particular to a kind of use in sewing machine moving knife and sewing machine.
Background technology
At present, the thread shearing cutter of two-needle sewing machine is mostly made up of moving knife and stationary knife 2（As shown in Figures 1 to 3）, stationary knife 2
Blade is fixed on needle plate down, and the blade of moving knife is fixed on the upside of rotating shuttle frame upward, and stationary knife 2 forms scissor cutting with moving knife
Line cutter, is formed with the upper thread hook portion 1-b for the hooking upper thread 7 and bottom line hook portion 1-a for hooking bottom line 8 on moving knife.Make
Used time, upper thread 7 and bottom line 8 are hooked by upper thread hook portion 1-b and bottom line hook portion 1-a respectively, during trimming, moving knife knife portion 1-d and stationary knife 2
Coordinate and cut upper thread 7 and bottom line 8 simultaneously, then thread tension disc 3 clamps bottom line 8 and upper thread 7.But, due to current bottom line
The center at the center, the center of upper thread hook portion 1-b and knife portion 1-d of hook portion 1-a substantially on the same line, causes thread tension disc 3
It is close that the bottom line 8 and upper thread 7 clamped are leaned on, sewing fabric from sewing machine take out when because upper thread 7 is by fabric of sewing
, therefore, upper thread 7 can with sewing fabric taking-up and from thread tension disc 3 pull out, due to bottom line 8 and upper thread 7 lean on it is close,
While upper thread 7 is drawn out, bottom line 8 can be pulled out from thread tension disc 3, so as to cause to sew next product when bottom line 8 band not
The problem come up.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of sewing machine that will not take bottom line out of when upper thread is drawn out
Use moving knife.
Another technical problem to be solved by this invention is to provide a kind of sewing machine using above-mentioned moving knife.
To solve above technical problem, the present invention is adopted the following technical scheme that：
A kind of use in sewing machine moving knife, including moving knife body, the knife portion, the shape that are formed on the upper surface of described moving knife body
Into bottom line hook portion and upper thread hook portion on the side adjacent with described upper surface of described moving knife body, described bottom line
The center of hook portion and described knife portion are centrally formed the first line, in the center and described knife portion of described upper thread hook portion
The second line is formed centrally, the first described line and the angle of the second described line are more than or equal to 5 °.
Specifically, the angle of the first described line and the second described line is 5 ° ~ 20 °.
Specifically, the bottom surface of the bottom surface of described bottom line hook portion and described upper thread hook portion is in circular arc.
Specifically, described knife portion is circular port.
Specifically, described moving knife also includes being easy to extract the recessed of upper thread out on the lower surface of the moving knife body for being formed in described
Portion.
More specifically, the angle between the bottom surface of the leading flank of described recess and described recess is more than or equal to 5 °.
More specifically, the angle between the bottom surface of the leading flank of described recess and described recess is 5 ° ~ 20 °.
More specifically, described upper thread hook portion is located at the front side portion of described recess.
More specifically, upper thread hook portion of the intersecting lens of the bottom surface of the leading flank of described recess and described recess described in
The lateral forward direction in place is inclined away from the side of described upper thread hook portion.
More specifically, the intersecting lens of the bottom surface of the leading flank of described recess and described recess and the second described line
Angle be 40 ° ~ 50 °.
A kind of sewing machine, including above-mentioned use in sewing machine moving knife.
Specifically, described sewing machine also includes the top of the moving knife for being located at described and coordinates with the knife portion of described moving knife
The stationary knife of cut-out upper thread and bottom line, the thread tension disc for being used to push down bottom line positioned at the lower section of described moving knife.
Due to the implementation of above technical scheme, the present invention has the following advantages that compared with prior art：
The present invention is by the first line of control and the angle of the second line so that the distance of bottom line and upper thread becomes big, upper thread
When being drawn out, bottom line will not be driven to be drawn out together, from the sewing without under the influence of once, improve operating efficiency.
Brief description of the drawings
Accompanying drawing 1 is the front view of prior art；
Accompanying drawing 2 is the top view of prior art；
Accompanying drawing 3 is the cooperation schematic diagram of thread tension disc and moving knife in the prior art；
Accompanying drawing 4 is top view of the invention；
Accompanying drawing 5 is side view of the invention；
Accompanying drawing 6 is bottom view of the invention；
Wherein：1st, moving knife body；2nd, stationary knife；3rd, thread tension disc；7th, upper thread；8th, bottom line；1-a, bottom line hook portion；1-a-s, bottom line
The center of hook portion；1-b, upper thread hook portion；The center of 1-b-s, upper thread hook portion；1-c, recess；1-c-1, the leading flank of recess and recessed
The intersecting lens of the bottom surface in portion；1-d, knife portion；1-d-s, the center in knife portion；9-a, the first line；9-b, the second line.
Specific embodiment
With reference to specific embodiment, the present invention will be further described in detail, but the present invention is not limited to following implementation
Example.
A kind of sewing machine, including moving knife, the stationary knife 2 positioned at the top of moving knife, positioned at the lower section of moving knife be used for push down bottom line 8
Thread tension disc 3.
Moving knife includes moving knife body 1, the knife portion 1-d being formed on the upper surface of moving knife body 1, is formed in moving knife body 1
The side adjacent with upper surface on（I.e. on the right flank of moving knife body 1）Bottom line hook portion 1-a and upper thread hook portion 1-b, knife portion
1-d is located at the front of bottom line hook portion 1-a, and upper thread hook portion 1-b is located at the rear of bottom line hook portion 1-a, upper thread 7 and the difference hook of bottom line 8
It is located on upper thread hook portion 1-b and bottom line hook portion 1-a and one end is located at the upper surface of moving knife body 1, the other end and is located at moving knife body 1
Lower surface, upper thread 7 and bottom line 8 positioned at the upper surface of moving knife body 1 are cut under the cooperation of knife portion 1-d and stationary knife 2, are located at
The bottom line 8 of the lower surface of moving knife body 1 is clamped by thread tension disc 3.
In order to bottom line 8 is pulled out together when preventing from extracting upper thread 7 out, the center 1-a-s's and knife portion 1-d of bottom line hook portion 1-a
Center 1-d-s forms the first line 9-a, and the center 1-d-s of the center 1-b-s and knife portion 1-d of upper thread hook portion 1-b forms second and connects
The angle α of line 9-b, the first line 9-a and the second line 9-b is more than or equal to 5 °.Preferably, the first line 9-a and the second line
The angle α of 9-b is 5 ° ~ 20 °.
The extraction of upper thread 7 for convenience, moving knife also includes being formed on the lower surface of moving knife body 1 to be easy to extract upper thread 7 out
Recess 1-c.Angle between the leading flank of recess 1-c and the bottom surface of recess 1-c is more than or equal to 5 °, it is therefore preferable to 5 ° ~ 20 °.
Upper thread hook portion 1-b is located at the front side portion of recess 1-c.The leading flank of recess 1-c and the intersecting lens of the bottom surface of recess 1-c
The 1-c-1 sides of lateral forward direction away from upper thread hook portion 1-b from where upper thread hook portion 1-b（I.e. the right side of automatic tool is forward to the left）
Incline.The angle β of the intersecting lens 1-c-1 and the second line 9-b of the leading flank of recess 1-c and the bottom surface of recess 1-c be 40 ° ~
50°.When so causing that thread tension disc 3 pushes down bottom line 8 with the lower surface cooperation of moving knife body 1, upper thread 7 may be located at the He of thread tension disc 3
It is convenient to extract upper thread 7 out between the through hole that recess 1-c is formed.
In order to prevent bottom line 8 and upper thread 7 because of rubbing crack, the bottom surface of bottom line hook portion 1-a and the bottom surface of upper thread hook portion 1-b are equal
In circular arc, the center 1-b-s of the center 1-a-s and upper thread hook portion 1-b of bottom line hook portion 1-a is the center of circle of circle where bottom surface.
In the present embodiment, knife portion 1-d is circular port, and Dao Bu 1-d centers are the center of circle of circle where circular port.
It is above-mentioned that all around to go up the inferior noun of locality be to make to define with the orientation of Fig. 4.
The present invention is described in detail above, its object is to allow the personage for being familiar with this art to will appreciate that this
The content of invention is simultaneously carried out, and it is not intended to limit the scope of the present invention, all Spirit Essence institutes of the invention
The equivalent change or modification of work, should all cover within the scope of the present invention.
Claims (6)
1. a kind of sewing machine, it is characterised in that：Moved including use in sewing machine moving knife, positioned at the top of described moving knife and with described
The knife portion of knife（1-d）Coordinate cut-out upper thread（7）And bottom line（8）Stationary knife（2）, positioned at the lower section of described moving knife be used for push down bottom
Line（8）Thread tension disc（3）；
Described moving knife includes moving knife body（1）, be formed in described moving knife body（1）Upper surface on described knife portion
（1-d）, be formed in described moving knife body（1）The side adjacent with described upper surface on bottom line hook portion（1-a）And face
Line hook portion（1-b）, described bottom line hook portion（1-a）Center（1-a-s）With described knife portion（1-d）Center（1-d-s）Shape
Into the first line（9-a）, described upper thread hook portion（1-b）Center（1-b-s）With described knife portion（1-d）Center（1-d-
s）Form the second line（9-b）, described the first line（9-a）With the second described line（9-b）Angle
It is 5 ° ~ 20 °；
Described moving knife also includes being formed in described moving knife body（1）Lower surface on be easy to extract out upper thread（7）Recess（1-
c）.
2. sewing machine according to claim 1, it is characterised in that：Described bottom line hook portion（1-a）Bottom surface and described
Upper thread hook portion（1-b）Bottom surface be in circular arc.
3. sewing machine according to claim 1, it is characterised in that：Described recess（1-c）Leading flank and described recessed
Portion（1-c）Bottom surface between angle be more than or equal to 5 °.
4. sewing machine according to claim 1, it is characterised in that：Described recess（1-c）Leading flank and described recessed
Portion（1-c）Bottom surface between angle be 5 ° ~ 20 °.
5. the use in sewing machine moving knife according to claim 1 or 3, it is characterised in that：Described recess（1-c）Leading flank and
Described recess（1-c）Bottom surface intersecting lens（1-c-1）From described upper thread hook portion（1-b）The lateral forward direction in place is away from described
Upper thread hook portion（1-b）Side incline.
6. the use in sewing machine moving knife according to claim 1 or 3, it is characterised in that：Described recess（1-c）Leading flank and
Described recess（1-c）Bottom surface intersecting lens（1-c-1）With the second described line（9-b）Angle be 40 ° ~ 50 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510137757.XA CN104775240B (en) | 2015-03-27 | 2015-03-27 | A kind of use in sewing machine moving knife and sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510137757.XA CN104775240B (en) | 2015-03-27 | 2015-03-27 | A kind of use in sewing machine moving knife and sewing machine |
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| Publication Number | Publication Date |
|---|---|
| CN104775240A CN104775240A (en) | 2015-07-15 |
| CN104775240B true CN104775240B (en) | 2017-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510137757.XA Active CN104775240B (en) | 2015-03-27 | 2015-03-27 | A kind of use in sewing machine moving knife and sewing machine |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110055690A (en) * | 2019-04-29 | 2019-07-26 | 吴江阳光科技缝纫机有限公司 | The lubricating arrangement of one koji wrist machine |
| CN112760843B (en) * | 2020-12-28 | 2023-08-01 | 杰克科技股份有限公司 | Roller car and thread cutting mechanism thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1847503A (en) * | 2005-04-14 | 2006-10-18 | 大和缝纫机制造株式会社 | Seam ravel preventing apparatus and ravel preventing method |
| CN102002828A (en) * | 2009-08-31 | 2011-04-06 | 飞马缝纫机制造株式会社 | Stitch ravelling prevention method and its device |
| CN204608359U (en) * | 2015-03-27 | 2015-09-02 | 苏州蓝鹰缝纫机科技有限公司 | A kind of use in sewing machine moving knife and Sewing machines |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5962092A (en) * | 1982-09-30 | 1984-04-09 | ジューキ株式会社 | Yarn cutter of main stitching sewing machine |
| JPH02142594A (en) * | 1988-11-22 | 1990-05-31 | Tokai Ind Sewing Mach Co Ltd | Lower thread breakage detector in sewing machine |
-
2015
- 2015-03-27 CN CN201510137757.XA patent/CN104775240B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1847503A (en) * | 2005-04-14 | 2006-10-18 | 大和缝纫机制造株式会社 | Seam ravel preventing apparatus and ravel preventing method |
| CN102002828A (en) * | 2009-08-31 | 2011-04-06 | 飞马缝纫机制造株式会社 | Stitch ravelling prevention method and its device |
| CN204608359U (en) * | 2015-03-27 | 2015-09-02 | 苏州蓝鹰缝纫机科技有限公司 | A kind of use in sewing machine moving knife and Sewing machines |
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| Publication number | Publication date |
|---|---|
| CN104775240A (en) | 2015-07-15 |
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Effective date of registration: 20191205 Address after: 215223 Group 8, Tongxin village, Wanping community, Songling Town, Wujiang District, Suzhou City, Jiangsu Province Patentee after: Wujiang Sunshine Technology Sewing Machine Co., Ltd. Address before: Wujiang District of Suzhou City, Jiangsu province 215223 Song Ling Zhen Wan Ping Cun concentric community Patentee before: Suzhou Lan Ying Sewing machines Science and Technology Ltd. |