CN207047500U - A kind of moving knife structure of sewing machine trimming - Google Patents
A kind of moving knife structure of sewing machine trimming Download PDFInfo
- Publication number
- CN207047500U CN207047500U CN201720973257.4U CN201720973257U CN207047500U CN 207047500 U CN207047500 U CN 207047500U CN 201720973257 U CN201720973257 U CN 201720973257U CN 207047500 U CN207047500 U CN 207047500U
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- moving knife
- nose part
- line
- sewing machine
- trimming
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Abstract
The utility model provides a kind of moving knife structure of sewing machine trimming, belongs to sewing machine technique field.It solves the problems, such as how to avoid line during trimming to be skidded off from moving knife.The moving knife structure of this sewing machine trimming includes the moving knife body of sheet and the nose part on front side of moving knife body, the front portion of nose part has edge, the rear portion of nose part has line of fall hole, there is hooking portion on the moving knife body at nose part rear portion, hooking portion is located at the outside of nose part and relative moving knife body extends forward, it is connected between hooking portion and nose part formed with hooking mouth, hooking mouth with line of fall hole.This moving knife structure can avoid line from skidding off moving knife during trimming, so as to ensure that the success rate of trimming, improve trimming quality well by designing line of fall hole, hooking mouth, crossed beam trunking and a series of guiding, the design of position limiting structure.
Description
Technical field
The utility model belongs to sewing machine technique field, is related to a kind of moving knife structure of sewing machine trimming.
Background technology
Sewing machine is with one or more sewing thread, and one or more stitchings are formed on sewing, make one or more layers seam
The machine that material interweaves or united by a seam, generally comprises domestic sewing machine and industrial sewing machine.At present, advanced industrial sewing machine is all
With automatic shearing mechanism, to reach laborsaving, power saving, less manpower, the purpose of the production efficiency of factory is improved.General thread cutting mechanism
With moving knife and stationary knife, when sewing finishing, move moving knife by drive device tangent with stationary knife, automatically will be from processing cloth
What is extended reaches the standard grade and offline cutting.
Such as Chinese patent【Application number：201520797539.4；Application publication number：CN205205442U】Disclose a kind of seam
Thread the thread cutting mechanism of machine, the thread cutting mechanism of this sewing machine, be rotatably connected to lower axle and drive shaft in casing, movable knife rack is fixed on down
The end of axle, and movable knife rack is fixed with moving knife, and stationary knife is fixed with casing, movable knife rack is hinged with cutter shaft connecting rod, the end of drive shaft
Portion is fixed with driving crank, and free end and the driving crank of cutter shaft connecting rod are hinged, and have limiting section in casing, when moving knife is remote
During stationary knife to ultimate range, driving crank can lean with limiting section, drive and be provided with regulating part between crank and limiting section.Should
Thread cutting mechanism can adjust the starting knife amount of moving knife, so as to simplify the difficulty of assembling and required precision to part, avoid
Cutting of occurring do not break or during trimming swaging clamp situation.
But there is following defect in above-mentioned thread cutting mechanism：Moving knife in above-mentioned thread cutting mechanism is hooking line the process to cutting edge
In, line easily skids off from moving knife, so as to cause hooking unsuccessful, in turn results in trimming failure.
The content of the invention
The purpose of this utility model is above mentioned problem be present for existing technology, it is proposed that a kind of sewing machine trimming
Moving knife structure, the technical problem that the utility model solves is that line skids off from moving knife when how to avoid trimming.
The purpose of this utility model can be realized by following technical proposal：A kind of moving knife structure of sewing machine trimming,
Moving knife body including sheet and the nose part on front side of moving knife body, the front portion of the nose part have edge, and it is special
Sign is that the rear portion of the nose part has line of fall hole, has hooking portion, institute on the moving knife body at the nose part rear portion
State hooking portion to be located at the outside of nose part and with respect to moving knife body extend forward, formed with hook between the hooking portion and nose part
Line mouth, the hooking mouth are connected with line of fall hole.
Be different from prior art, the moving knife structure of this sewing machine trimming by the rear design line of fall hole of nose part,
And hooking portion is designed on the moving knife body close to nose part rear portion, formed with being connected with line of fall hole between hooking portion and nose part
Logical hooking mouth, when needing trimming, line can enter in line of fall hole from hooking mouth, because hooking portion is located at the outer of nose part
Side and relative moving knife body extends forward, so that line can be by the dual limit in line of fall hole and hooking portion during cutting
System so that line is not easy to slide into hooking mouth from line of fall hole during cutting to be skidded off from hooking mouth again；Therefore, set more than
Meter, line skids off from moving knife during so as to avoid trimming, and then ensures that line can successfully be cut.
In the moving knife structure of above-mentioned sewing machine trimming, there is elongated crossed beam trunking, institute in the nose part
Stating the front end of crossed beam trunking has through hole, and the edge is located on the edge of through hole, rear end and the line of fall hole phase of the crossed beam trunking
Connection.When needing trimming, line enters line of fall hole from hooking mouth, then is entered by crossed beam trunking at edge, that is to say, that
It by the design of above crossed beam trunking, further can be provided for line spacing, line skids off from moving knife during so as to avoid trimming；And
And above-mentioned crossed beam trunking also can provide guiding for line, be advantageous to improve trimming quality.
In the moving knife structure of above-mentioned sewing machine trimming, the inner side in the hooking portion has the curved guiding surface of indent,
Have on the outside of the nose part to the inclined guiding surface one in line of fall hole direction.Pass through above curved guiding surface and guiding surface one
Design so that line can be entered more easily in line of fall hole from hooking mouth, avoid line during trimming from not having dropping place to line of fall hole
In and skid off moving knife.
In the moving knife structure of above-mentioned sewing machine trimming, have between the curved guiding surface and adjacent line of fall hole inwall
Limited location projection one, the rear portion of the nose part have the spacing preiection two relative with curved guiding surface.The above-mentioned He of spacing preiection one
The design of spacing preiection two so that the line entered in line of fall hole is not easy to skid off from line of fall hole.
In the moving knife structure of above-mentioned sewing machine trimming, the inner side of the spacing preiection two has to after crossed beam trunking
The inclined guiding surface two in end slot mouth direction.Pass through the design of above guiding surface two so that line can more easily enter
Crossed beam trunking and obtain spacing, be so advantageous to avoid line from skidding off from moving knife during trimming.
In the moving knife structure of above-mentioned sewing machine trimming, length direction of the crossed beam trunking along nose part tilts cloth
Put.Designed more than, when line enters crossed beam trunking, be more readily formed at the both ends of crossed beam trunking spacing, be so advantageous to avoid
Line skids off during trimming from moving knife.
Compared with prior art, the moving knife structure of this sewing machine trimming has advantages below：This moving knife structure is by setting
Line of fall hole, hooking mouth, crossed beam trunking and a series of guiding, the design of position limiting structure are counted, line can be avoided well in trimming
During skid off moving knife, so as to ensure that the success rate of trimming, improve trimming quality.
Brief description of the drawings
Fig. 1 is the schematic diagram one of the moving knife structure of this sewing machine trimming.
Fig. 2 is the schematic diagram two of the moving knife structure of this sewing machine trimming.
In figure, 1, moving knife body；2nd, nose part；3rd, edge；4th, line of fall hole；5th, hooking portion；6th, hooking mouth；7th, line is crossed
Groove；8th, through hole；9th, curved guiding surface；10th, guiding surface one；11st, spacing preiection one；12nd, spacing preiection two；13rd, guiding surface two.
Embodiment
It is specific embodiment of the utility model and with reference to accompanying drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these embodiments.
The moving knife structure of this sewing machine trimming includes moving knife body 1, nose part 2, edge 3, line of fall hole 4, hooking portion
5th, hooking mouth 6, crossed beam trunking 7, through hole 8, curved guiding surface 9, guiding surface 1, spacing preiection 1, spacing preiection 2 12, guiding
Inclined-plane 2 13.
Specifically, as depicted in figs. 1 and 2, the moving knife structure of this sewing machine trimming includes the He of moving knife body 1 of sheet
Nose part 2 positioned at the front side of moving knife body 1, has elongated crossed beam trunking 7 in nose part 2, and crossed beam trunking 7 is along nose part 2
Length direction be in tilted layout.The front portion of nose part 2 has edge 3, and the front end of crossed beam trunking 7 has through hole 8, edge 3
In on the edge of through hole 8；The rear portion of nose part 2 has line of fall hole 4, and the rear end of crossed beam trunking 7 is connected with line of fall hole 4.Close to knife
There is hooking portion 5 on the moving knife body 1 at the rear portion of tip 2, hooking portion 5 be located at the outside of nose part 2 and relative moving knife body 1 forward
Extension.It is connected between hooking portion 5 and nose part 2 formed with hooking mouth 6, hooking mouth 6 with line of fall hole 4.
More specifically, the inner side in hooking portion 5 has the curved guiding surface 9 of indent, the outside of nose part 2 has to the side of line of fall hole 4
To inclined guiding surface 1.There is spacing preiection 1, nose part 2 between curved guiding surface 9 and the adjacent inwall of line of fall hole 4
Rear portion there is the spacing preiection two 12 relative with curved guiding surface 9.The inner side of spacing preiection 2 12 has to the rear end of crossed beam trunking 7
The inclined guiding surface 2 13 in notch direction.
Specific embodiment described herein is only to the utility model spirit explanation for example.The utility model institute
Category those skilled in the art can make various modifications or supplement to described specific embodiment or using similar
Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.
Although moving knife body 1, nose part 2, edge 3, line of fall hole 4, hooking portion 5, hooking mouth have more been used herein
6th, crossed beam trunking 7, through hole 8, curved guiding surface 9, guiding surface 1, spacing preiection 1, spacing preiection 2 12, guiding surface 2 13
Deng term, but it is not precluded from the possibility using other terms.Conciliate using these terms just for the sake of more easily description
Release essence of the present utility model；Being construed as any additional limitation is disagreed with the utility model spirit
's.
Claims (6)
1. a kind of moving knife structure of sewing machine trimming, including the moving knife body (1) of sheet and on front side of moving knife body (1)
Nose part (2), the front portion of the nose part (2) have edge (3), it is characterised in that the rear portion of the nose part (2) has
Line of fall hole (4), there are hooking portion (5) on the moving knife body (1) at the nose part (2) rear portion, the hooking portion (5) is located at
The outside of nose part (2) and relative moving knife body (1) extends forward, formed with hook between the hooking portion (5) and nose part (2)
Line mouth (6), the hooking mouth (6) are connected with line of fall hole (4).
2. the moving knife structure of sewing machine trimming according to claim 1, it is characterised in that have on the nose part (2)
There is elongated crossed beam trunking (7), the front end of the crossed beam trunking (7) has through hole (8), and the edge (3) is located at through hole (8)
Edge on, the rear end of the crossed beam trunking (7) is connected with line of fall hole (4).
3. the moving knife structure of sewing machine trimming according to claim 2, it is characterised in that the hooking portion (5) it is interior
Side has the curved guiding surface (9) of indent, has on the outside of the nose part (2) to the inclined guiding surface one in line of fall hole (4) direction
(10)。
4. the moving knife structure of sewing machine trimming according to claim 3, it is characterised in that the curved guiding surface (9) with
There is spacing preiection one (11), the rear portion of the nose part (2) has and curved guiding surface between adjacent line of fall hole (4) inwall
(9) relative spacing preiection two (12).
5. the moving knife structure of sewing machine trimming according to claim 4, it is characterised in that the spacing preiection two (12)
Inner side have to crossed beam trunking (7) the inclined guiding surface two (13) in rear end notch direction.
6. the moving knife structure of the sewing machine trimming according to Claims 2 or 3 or 4 or 5, it is characterised in that described to cross line
Length direction of the groove (7) along nose part (2) is in tilted layout.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720973257.4U CN207047500U (en) | 2017-08-04 | 2017-08-04 | A kind of moving knife structure of sewing machine trimming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720973257.4U CN207047500U (en) | 2017-08-04 | 2017-08-04 | A kind of moving knife structure of sewing machine trimming |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207047500U true CN207047500U (en) | 2018-02-27 |
Family
ID=61498454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720973257.4U Active CN207047500U (en) | 2017-08-04 | 2017-08-04 | A kind of moving knife structure of sewing machine trimming |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207047500U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113026231A (en) * | 2021-03-15 | 2021-06-25 | 拓卡奔马机电科技有限公司 | Rotary hook cutter thread trimming device and sewing machine |
-
2017
- 2017-08-04 CN CN201720973257.4U patent/CN207047500U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113026231A (en) * | 2021-03-15 | 2021-06-25 | 拓卡奔马机电科技有限公司 | Rotary hook cutter thread trimming device and sewing machine |
| CN113026231B (en) * | 2021-03-15 | 2022-11-29 | 拓卡奔马机电科技有限公司 | Rotary hook cutter thread trimming device and sewing machine |
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