CN202945437U - Sewing machine combined-type thread trimmer with function of elastically positioning bottom thread ends - Google Patents
Sewing machine combined-type thread trimmer with function of elastically positioning bottom thread ends Download PDFInfo
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- CN202945437U CN202945437U CN 201220601631 CN201220601631U CN202945437U CN 202945437 U CN202945437 U CN 202945437U CN 201220601631 CN201220601631 CN 201220601631 CN 201220601631 U CN201220601631 U CN 201220601631U CN 202945437 U CN202945437 U CN 202945437U
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- thread
- movable blade
- bottom line
- guide channel
- yarn guide
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Abstract
The utility model discloses a sewing machine combined-type thread trimmer with a function of elastically positioning bottom thread ends. The sewing machine combined-type thread trimmer with the function of elastically positioning the bottom thread ends comprises a movable knife body, and further comprises a movable knife guard sheet, wherein one end of the movable knife body is provided with at least one mounting hole, the other end of the movable knife body is provided with a thread trimming protrusion, and an opening groove is placed on the movable knife body, and is further provided with a parenthese-type thread-capturing opening. A thread-guide groove and a positioning groove are placed on the position where the movable knife guard sheet corresponds to the opening groove. The thread-guide groove is communicated with the thread-capturing opening. The positioning groove is place at the tail end of the thread-guide groove, is communicated with the thread-guide groove, and is used for positioning the bottom thread ends. The sewing machine combined-type thread trimmer with the function of elastically positioning the bottom thread ends is simple in structure, reasonable in design, strong in practicability, capable of effectively prolonging service life of the movable knife body and solving the positioning problem of the bottom thread ends of the sewing machine to ensure that the off-thread phenomenon can be avoided, free of re-doing of sewing products, and high in pass percent of finish products and business economic benefit.
Description
Technical field
The utility model relates to a kind of Sewing machines thread trimmer, more particularly, relates to a kind of Sewing machines combined type thread trimmer with bottom line the end of a thread positioning function.
Background technology
generally be provided with an automatic thread trimming device on existing sewing machine needle board, this cutting facility is to be made of a dead knife and a movable blade, described movable blade can be moved away from direction near reaching to dead knife, this movable blade can catch on upper thread and bottom line, and by movable blade and staggered the working in coordination with of dead knife, line is cut off, yet, existing cutting facility is generally after cutting off bottom line, can't position bottom line the end of a thread, cause bottom line the end of a thread position uncertain, Sewing machines can't find bottom line the end of a thread next time accurately when sewing, the off-line phenomenon easily appears, cause the rework rate of product high, the qualification rate of finished product is low, operating efficiency is also very low simultaneously, cause cost of labor high, production cost is high, Business Economic Benefit is low.Therefore, industry is all by every possible means being improved this cutting facility, makes that the Sewing machines action is more smooth and easy, effect is better, thereby reduces costs, and develops scheme.Well known, make little by little little change on thread trimmer slight on Sewing machines, all must need the cost long time to go experiment experiment again, design is design again, so, even the little change a little of the thread trimmer of Sewing machines neither have the knack of that this operator can reach easily.
application number be 2011209297904.7 by name " a kind of trimming wire-clamping devices " but patent application document a kind of trimming wire-clamping device of clamping bottom line the end of a thread is disclosed, it discloses a kind of elasticity clamp body that is fixedly installed on needle plate, the front portion of rotating end by cutting blade is shaped with the line section of pushing away that matches with elasticity clamp body, match with cutter head when wire shear part the line cut-out of tension, the end of a thread of bottom line just is clamped and fixed in and rotates between end and elasticity clamp body, thereby realize the location to bottom line the end of a thread, yet adopt this structure not only to increase the parts of cutting facility, make complex structure, and be difficult to obtain the effect of desirable clamping bottom line the end of a thread, and easily occur there is no successful clamping, or top and bottom lines is held under the state that kinks, cause pulling out when making thing bottom line is together extracted.
In addition, and because movable blade moves back and forth, easily wear and tear or be impacted and rupture, therefore existing Sewing machines movable blade is shorter service life, this shows, above-mentioned existing cutting facility obviously still has inconvenience and defective, and demands urgently further being improved.The problem that exists in order to solve described trimming blade, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but has no for a long time applicable design always, and this is obviously the problem that the anxious wish of relevant dealer solves.
The utility model content
The purpose of this utility model is to overcome defects of the prior art, provide a kind of and can locate reliably bottom line the end of a thread, and can effectively prevent the movable blade body wear, the Sewing machines combined type thread trimmer with bottom line the end of a thread positioning function of avoiding the movable blade body to be impacted.
for achieving the above object, the technical scheme that the utility model provides is as follows: a kind of Sewing machines combined type thread trimmer with bottom line the end of a thread positioning function is provided, comprise the movable blade body, one end of described movable blade body is provided with an installing hole at least, the other end of this movable blade body is provided with the trimming projection, also be provided with an open slot on described movable blade body, the line that this open slot front end also is provided with one "＜" type catches opening, also comprise the movable blade bluff piece that is installed in the movable blade body back side, the position that this movable blade bluff piece and open slot adapt is provided with a yarn guide channel and locating slot, described yarn guide channel catches opening with line and is connected, described locating slot is arranged at the tail end of yarn guide channel and is connected with this yarn guide channel, described locating slot is used for location bottom line the end of a thread.
Described locating slot is arranged on the below of yarn guide channel, and the openend of this locating slot and yarn guide channel form a crotch.
Described movable blade bluff piece is provided with line and catches the anticollision section that opening adapts; Described movable blade bluff piece is to be formed by the spring steel material manufacturing.
Described movable blade body one end also is provided with a perforate, and this perforate and trimming bossing are overlapping, makes the trimming projection form a trimming breach near a side of open slot.
beneficial effect with Sewing machines combined type thread trimmer of bottom line the end of a thread positioning function described in the utility model is: by being provided with an open slot at described movable blade body, the movable blade body back side is connected with a movable blade bluff piece, can effectively prevent in movable blade body motion process frayed by this bluff piece, and can avoid the movable blade body to be impacted, extend the service life of movable blade body, the position that described movable blade bluff piece and open slot adapt is provided with a yarn guide channel and locating slot, described locating slot is arranged at the tail end of yarn guide channel and is connected with this yarn guide channel, during trimming, the movable blade body moves to the dead knife direction, motion along with the movable blade body, line seizure opening is caught upper thread and the bottom line receipts at pin hole place, bottom line enters in locating slot via yarn guide channel, interlocking by movable blade and dead knife makes protruding the matching with dead knife of trimming that upper thread and bottom line are cut off, this moment, the end of a thread of bottom line was still stayed in described locating slot, realized the location of bottom line the end of a thread, Sewing machines can accurately find bottom line the end of a thread next time when sewing, have reasonable in design, technique is simple, effectively avoided off-line, improve the qualification rate of finished product.
By locating slot being arranged on the below of yarn guide channel, the openend of this locating slot and yarn guide channel form a crotch, can guarantee effectively that bottom line the end of a thread is positioned in locating slot, avoid bottom line to enter in yarn guide channel and landing; Described movable blade body one end is provided with a perforate in addition, this perforate and trimming bossing are overlapping, make trimming projection one side form a trimming breach, the chip that produces during trimming landing from perforate, avoid chip to be accumulated on thread trimmer and impact is used, the cleaning that can keep thread trimmer further extends service life of thread trimmer.
In sum, the utlity model has simple in structure, reasonable in design, practical, can effectively extend the service life of movable blade body, and solve bottom line the end of a thread orientation problem, Sewing machines can accurately find bottom line the end of a thread next time when sewing, the off-line phenomenon can not occur, make that Sewing machines action is more smooth and easy, effect is better, stitched products need not to do over again, the qualification rate of finished product is high, Business Economic Benefit is high, thereby more is suitable for practicality, has the extensive value of industry.
Below in conjunction with drawings and Examples, the Sewing machines combined type thread trimmer with bottom line the end of a thread positioning function described in the utility model is described further.
Description of drawings
Fig. 1 is the structural representation with Sewing machines combined type thread trimmer of bottom line the end of a thread positioning function described in the utility model;
Fig. 2 is the structural representation of the movable blade body of the Sewing machines combined type thread trimmer with bottom line the end of a thread positioning function described in the utility model;
Fig. 3 is the structural representation of the movable blade bluff piece of the Sewing machines combined type thread trimmer with bottom line the end of a thread positioning function described in the utility model.
The specific embodiment
Below the preferred example with Sewing machines combined type thread trimmer of bottom line the end of a thread positioning function described in the utility model, therefore do not limit protection domain of the present utility model.
with reference to Fig. 1, Fig. 2, Fig. 3, a kind of Sewing machines combined type thread trimmer with bottom line the end of a thread positioning function is provided, comprise movable blade body 1, one end of described movable blade body 1 is provided with an installing hole 2 at least, the other end of this movable blade body 1 is provided with trimming projection 3, also be provided with an open slot 4 on described movable blade body 1, this open slot 4 and trimming projection 3 are arranged on the same end of movable blade body 1, also comprise the movable blade bluff piece 5 that is installed in movable blade body 1 back side, 5 pairs of movable blade bodies 1 of this movable blade bluff piece shield, can effectively prevent movable blade body 1 frayed or shock in motion process, can extend greatly the service life of movable blade body 1, described movable blade bluff piece 5 is provided with a yarn guide channel 7 and locating slot 8 with the position that open slot 4 adapts, described locating slot 8 is arranged at the tail end of yarn guide channel 7 and is connected with this yarn guide channel 7, described locating slot 8 is used for location bottom line the end of a thread, during trimming, movable blade body 1 is to moving near the dead knife direction, and bottom line enters in locating slot 5 via yarn guide channel 4 and positions, and can accurately find bottom line the end of a thread when Sewing machines is sewed, effectively avoid off-line, improved the qualification rate of finished product.
Described locating slot 8 is arranged on the below of yarn guide channel 7, and the openend of this locating slot 8 and yarn guide channel 7 form a crotch 9.When bottom line the end of a thread is positioned at locating slot 8 when interior, owing to being subject to stopping of crotch 9, bottom line the end of a thread can not slip in yarn guide channel 7, even landing, and the location is reliable, and is reasonable in design.
Described open slot 4 front ends are provided with line and catch opening 6, it is "＜" type that this line catches opening 6, described yarn guide channel 7 catches opening 6 with this line and is connected, and in the time of guaranteeing trimming, movable blade body 1 is received the upper thread at pin hole place and bottom line together and caught, and bottom line is positioned in locating slot.
Relative position between described movable blade body 1 and movable blade bluff piece 5 can be regulated, therefore the width of yarn guide channel 7 can be regulated, can satisfy the different bottom line of thickness to the demand of yarn guide channel 7, and guarantee that bottom line enters in locating slot 8 via yarn guide channel 7 and reliably locate, avoid more carefully causing bottom line location unreliable because of the excessive bottom line of yarn guide channel 7, bottom line is from phenomenons such as yarn guide channel 7 interior landings, can regulate the width of yarn guide channel 7 according to the thickness of bottom line when therefore sewing, the width of yarn guide channel 7 and the thickness of bottom line are adapted.
Described movable blade bluff piece 5 is provided with anticollision section 12, this anticollision section 12 is positioned at line and catches opening 6 tops and extend to movable blade body 1 outside, this movable blade bluff piece 5 is to be formed by the spring steel material manufacturing, therefore to have an elastic performance good for this movable blade bluff piece 5, and intensity is high, resistance to compression and abrasion resistance are good, can avoid movable blade body 1 to be impacted in motion process and rupture.
The thickness of described movable blade bluff piece 5 is 0.3mm.
described movable blade body 1 one ends are provided with a perforate 10, this perforate 10 overlaps with trimming projection 3, make trimming projection 3 form a trimming breach 11 near a side of open slot 4, during trimming, movable blade body 1 is to drawing close near the dead knife direction, thereby make movable blade body 1 and dead knife staggered, match with dead knife by trimming projection 3 line is cut off in trimming breach 11, this moment, the end of a thread of bottom line was still stayed in described locating slot, and line chip landing from perforate 10 that trimming produces, have reasonable in design, technique is simple, the advantage that further extends the service life of thread trimmer.
Above-described embodiment is the better embodiment of the utility model; but embodiment of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present utility model and principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, within being included in protection domain of the present utility model.
Claims (7)
1. Sewing machines combined type thread trimmer with bottom line the end of a thread positioning function, comprise movable blade body (1), one end of described movable blade body (1) is provided with an installing hole (2) at least, the other end of this movable blade body (1) is provided with trimming projection (3), it is characterized in that, also comprise the movable blade bluff piece (5) that is installed in movable blade body (1) back side, described movable blade body (1) is provided with an open slot (4), this movable blade bluff piece (5) is provided with a yarn guide channel (7) and locating slot (8) with the position that open slot (4) adapts, described locating slot (8) is arranged at the tail end of yarn guide channel (7) and is connected with this yarn guide channel (7), described locating slot (8) is used for location bottom line the end of a thread.
2. the Sewing machines combined type thread trimmer with bottom line the end of a thread positioning function according to claim 1, it is characterized in that, described locating slot (8) is arranged on the below of yarn guide channel (7), and the openend of this locating slot (8) and yarn guide channel (7) form a crotch (9).
3. the Sewing machines combined type thread trimmer with bottom line the end of a thread positioning function according to claim 1, it is characterized in that, described open slot (4) front end is provided with line and catches opening (6), it is "＜" type that this line catches opening (6), and described yarn guide channel (7) catches opening (6) with line and is connected.
4. the Sewing machines combined type thread trimmer with bottom line the end of a thread positioning function according to claim 1, is characterized in that, the width of described yarn guide channel (7) can be regulated.
5. the Sewing machines combined type thread trimmer with bottom line the end of a thread positioning function according to claim 1, it is characterized in that, described movable blade bluff piece (5) is provided with anticollision section (12), and this anticollision section (12) is positioned at line and catches opening (6) top and extend to outside movable blade body (1).
6. have according to claim 1 or 5 the Sewing machines combined type thread trimmer of bottom line the end of a thread positioning function, it is characterized in that, the thickness of described movable blade bluff piece (5) is 0.3mm.
7. the Sewing machines combined type thread trimmer with bottom line the end of a thread positioning function according to claim 1, it is characterized in that, described movable blade body (1) one end also is provided with a perforate (10), this perforate (10) overlaps with trimming projection (3), makes trimming projection (3) form a trimming breach (11) near a side of open slot (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220601631 CN202945437U (en) | 2012-11-15 | 2012-11-15 | Sewing machine combined-type thread trimmer with function of elastically positioning bottom thread ends |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220601631 CN202945437U (en) | 2012-11-15 | 2012-11-15 | Sewing machine combined-type thread trimmer with function of elastically positioning bottom thread ends |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202945437U true CN202945437U (en) | 2013-05-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220601631 Withdrawn - After Issue CN202945437U (en) | 2012-11-15 | 2012-11-15 | Sewing machine combined-type thread trimmer with function of elastically positioning bottom thread ends |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202945437U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953238A (en) * | 2012-11-15 | 2013-03-06 | 东莞市名菱工业自动化科技有限公司 | Sewing machine combined-type thread trimmer with base thread end positioning function |
-
2012
- 2012-11-15 CN CN 201220601631 patent/CN202945437U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953238A (en) * | 2012-11-15 | 2013-03-06 | 东莞市名菱工业自动化科技有限公司 | Sewing machine combined-type thread trimmer with base thread end positioning function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130522 Effective date of abandoning: 20141029 |
|
| RGAV | Abandon patent right to avoid regrant |