CN202072904U - Thread-shifting device of sewing machine - Google Patents
Thread-shifting device of sewing machine Download PDFInfo
- Publication number
- CN202072904U CN202072904U CN2011200907398U CN201120090739U CN202072904U CN 202072904 U CN202072904 U CN 202072904U CN 2011200907398 U CN2011200907398 U CN 2011200907398U CN 201120090739 U CN201120090739 U CN 201120090739U CN 202072904 U CN202072904 U CN 202072904U
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- rotating shaft
- frame
- thread
- sewing machines
- line rotating
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Abstract
The utility model provides a thread-shifting device of a sewing machine belonging to the technical field of machinery, which solves the problems of easy wearing and short service life of the thread-shifting rotating shaft of a conventional thread-shifting device. The thread-shifting device of a sewing machine comprises a thread-shifting rotating shaft and a frame fixedly connected with the head of the sewing machine. The thread-shifting rotating shaft rotatably passes through the frame. One end of the thread-shifting rotating shaft is fixedly connected with a driving connecting rod assembly and the other end of the thread-shifting rotating shaft is fixedly equipped with a thread-shifting rod. The thread-shifting rotating shaft and the frame are axially positioned. A supporting structure for reducing the abrasion of the thread-shifting rotating shaft is arranged between the thread-shifting rotating shaft and the frame. The thread-shifting device has the advantages of long service life and high thread-shifting precision.
Description
Technical field
The utility model belongs to field of mechanical technique, relates to a kind of Sewing machines, particularly a kind of Sewing machines thread-moving device.
Background technology
At present, the automaticity height of Sewing machines, Sewing machines thread-moving device are the important component parts of Sewing machines, after the automatic thread trimming device in the Sewing machines is cut off needlework, for making needlework play seam smoothly for the second time, automatic thread wiping device is dialled needlework to come up from the needle plate hole.
Existing sewing machine thread-moving device structure is roughly the same, and for example the Chinese patent literature data discloses a kind of rotating thread-moving device [application number: 200810098157.7 of Sewing machines; Publication number: CN101319437A], it comprises fixture, allows shank and sewing needle to connect therebetween, is combined in the sewing head bottom of Sewing machines; Securing member is combined on the above-mentioned fixing piece in the mode that allows rotation; Power generates mechanism, is installed in above-mentioned securing member and can generates driving force; Power is passed on mechanism, connects above-mentioned power and generates mechanism and pass on power; And dial the line hook, along with above-mentioned power is passed on the driving effect of mechanism and carry out circumnutation in set angle.
The line hook of dialling in the above-mentioned patent is passed on mechanism by power: connecting rod, swing component and cam member drive and rotate, dialling the line hook is installed on the support plate by axle spare, axle part and support plate are for directly to contact, dialling line is hooked in rotary course axis spare and can rubs with support plate, axle part wear extent is big, and the line precision is dialled in wearing and tearing back directly influence, uses a period of time rear axle spare just to need to change, service life is short, has increased use cost.
Summary of the invention
The purpose of this utility model is at the above-mentioned problems in the prior art, provides a kind of can making to dial that the line rotating shaft is not easy to wear, the Sewing machines thread-moving device of long service life.
The purpose of this utility model can realize by following technical proposal: a kind of Sewing machines thread-moving device, comprise the frame of dialling the line rotating shaft and being fixed on the Sewing machines head, described group of rotating being arranged on the frame of line rotating shaft, one end of described group of line rotating shaft is fixed with the drive link assembly, the other end of dialling the line rotating shaft is fixed with dials the line bar, it is characterized in that the described group of line rotating shaft and frame axial location are provided with between the described group of line rotating shaft and the frame and can reduce the supporting structure of dialling line rotating shaft wearing and tearing.
After needlework are cut off, needlework before for the second time playing seam, the work of this Sewing machines thread-moving device, the drive link assembly drives to be dialled line rotating shaft rotation and makes and dial the line bar needlework are set aside up from the needle plate pin hole, dials the line action to finish, and makes the sewing function play seam smoothly.Because dial between line rotating shaft and the frame and be provided with supporting structure, supporting structure has not only played supporting role, make that group line rotating shaft stability of rotation is good, and supporting structure avoids group line rotating shaft directly to contact frame, the wearing and tearing of group line rotating shaft have been reduced, dial the long service life of line rotating shaft, reduced use cost.
In above-mentioned Sewing machines thread-moving device, described supporting structure is a bearing, and described bearing cone is placed in dials the line rotating shaft outside, and bearing outer ring is connected with the frame tight fit.Bearing is assemblied in by the axle sleeve accessory and dials between line rotating shaft and the frame, and the support effects of bearing is good, has avoided group line rotating shaft directly to contact frame, has reduced the wearing and tearing of group line rotating shaft, has prolonged the service life of group line rotating shaft.
In above-mentioned Sewing machines thread-moving device, the quantity of described bearing is one to four.
In above-mentioned Sewing machines thread-moving device, described bearing is a deep groove ball bearing.
In above-mentioned Sewing machines thread-moving device, described bearing is a needle bearing.
As second kind of situation, in above-mentioned Sewing machines thread-moving device, described supporting structure is some column needle rollers, and described needle roller axially is filled in to be dialled between line rotating shaft and the frame.The quantity of column needle roller is decided according to actual conditions, and needle roller will be dialled line rotating shaft rigid friction previous and frame and be converted to rolling friction, reduce the wearing and tearing of group line rotating shaft, prolong the service life of group line rotating shaft.
In above-mentioned Sewing machines thread-moving device, described drive link assembly comprises shift fork, connecting rod, cam and is connected in electromagnetic valve on the frame, one end of described shift fork is a hinged end, the other end is the shift fork end, is the middle part between hinged end and the shift fork end, and the middle part of shift fork is hinged on the frame by pin rod one, the shift fork end is connected with the spool of electromagnetic valve, hinged end is by pin rod two and rod hinge connection, and the other end and the cam of described connecting rod are hinged, and cam is connected mutually with group line rotating shaft.
Shift fork, connecting rod and cam all adopt articulated manner to be connected, so the three can relatively rotate at pin joint separately.During the action of this drive link assembly, the shift fork end motion of the spool shift fork of electromagnetic valve before this, the hinged end drivening rod motion of shift fork, connecting rod drives cam rotation again, also rotate with the line rotating shaft of dialling that cam is connected, thereby the line bar of dialling that is fixed in group line rotating shaft is rotated to finish group line action.Process was identical when the shift fork end phase opposite direction of the spool shift fork of electromagnetic valve moved, but the direction of motion is opposite.
In above-mentioned Sewing machines thread-moving device, described frame is provided with wind spring, and described wind spring has body and stretches out the reset terminal and the stiff end of body, and the body of wind spring is located on the pin rod one, and reset terminal is resisted against on the pin rod two, and stiff end is resisted against on the frame.Thread-moving device will be in the state that constantly recycles, and dials the line bar and resets finishing to need to make after once dialling line action, prepares for dial line next time.The reset terminal of wind spring is subjected to producing strain after the driving force of spool of electromagnetic valve, when finish once dial the line action after, the driving force of spool disappears, the elastic force that the reset terminal of wind spring has makes the spool of electromagnetic valve and dials the line bar and resets.
In above-mentioned Sewing machines thread-moving device, offer the groove that is positioned at frame end and close group line bar in the described group of line rotating shaft, E shape back-up ring is housed in the described groove.Dial line rotating shaft one end because be fixed with cam, so dialling the line rotating shaft can not move axially to dialling the line rod end, dialling the E shape back-up ring that is equipped with at line rotating shaft middle part is resisted against the frame end and makes and dial the line rotating shaft and can axially not break away from frame, dial line rotating shaft axial location like this in frame, here by E shape back-up ring axial location, the easy to assembly of line rotating shaft dialled in operation easily.
Compared with prior art, this Sewing machines thread-moving device has reduced the wearing and tearing of group line rotating shaft by supporting structure, has prolonged the service life of group line rotating shaft, has reduced use cost, and supporting structure makes that to dial line rotating shaft rotational stabilization good, dials line precision height.
Description of drawings
Fig. 1 is that the structure master of this Sewing machines thread-moving device looks schematic diagram.
Fig. 2 is the structure side schematic views of this Sewing machines thread-moving device.
Fig. 3 is the STRUCTURE DECOMPOSITION schematic diagram of supporting structure in this Sewing machines thread-moving device.
Among the figure, 1, dial the line rotating shaft; 2, frame; 3, dial the line bar; 4, supporting structure; 4a, bearing; 4b, axle sleeve; 5, shift fork; 6, connecting rod; 7, cam; 8, electromagnetic valve; 9, pin rod one; 10, pin rod two; 11, wind spring; 12, E shape back-up ring; 13, positioning sleeve; 14, bolt.
The specific embodiment
Below be specific embodiment of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.
This Sewing machines thread-moving device is made up of parts such as dialling line rotating shaft 1, frame 2, drive link assembly and supporting structure 4, after needlework are cut off, needlework are before playing seam for the second time, the work of this Sewing machines thread-moving device, dialling line bar 3 can set aside up needlework from the needle plate pin hole, dial the line action to finish, make the sewing function play seam smoothly.
Specifically, as depicted in figs. 1 and 2, frame 2 is connected in the Sewing machines lower head by bolt in use, dial line rotating shaft 1 rotating being arranged on the frame 2, an end of dialling line rotating shaft 1 is fixed with the drive link assembly, the drive link assembly comprises shift fork 5, connecting rod 6, cam 7 and the electromagnetic valve 8 that is connected on the frame 2, one end of shift fork 5 is a hinged end, the other end is the shift fork end, be the middle part between hinged end and the shift fork end, the middle part of shift fork 5 is hinged on the frame 2 by pin rod 1, be connected by a bearing pin between the spool of shift fork end and electromagnetic valve 8, bearing pin is fixed on the spool for one section, the shift fork end is forked, another of bearing pin section is arranged in the prong of shift fork end, shift fork 5 is owing to be hinged on the frame 2, therefore the shift fork end is the motion of an arc track, and the movement locus of spool is a rectilinear motion, when spool shift fork end moves, bearing pin can be done small size moving back and forth in the prong of shift fork end, make bearing pin that stuck phenomenon at the shift fork end can not take place, and the hinged end of shift fork 5 is hinged by pin rod 2 10 and connecting rod 6, the other end of connecting rod 6 and cam 7 are hinged, and cam 7 is connected mutually with group line rotating shaft 1.The other end of dialling line rotating shaft 1 is fixed with dials line bar 3, dial line bar 3 front ends and have the convenient arc crotch of dialling line, dialling line bar 3 passes the positioning sleeve 13 that is set in group line rotating shaft 1 end and dials line rotating shaft 1, dial line rotating shaft 1 this end and also axially be equipped with bolt 14, screwed in place bolt 14, thus bolt 14 compresses the location that positioning sleeve 13 realizes dialling line bar 3.
Dial line rotating shaft 1 and offer the groove that is positioned at place, frame 2 ends and close group line bar 3 ends, E shape back-up ring 12 is housed in the groove, dial line rotating shaft 1 by E shape back-up ring 12 axial location, operation easily, dial the easy to assembly of line rotating shaft 1, dial to be provided with between line rotating shaft 1 and the frame 2 and can reduce the supporting structure 4 of dialling line rotating shaft 1 wearing and tearing.As shown in Figure 3, supporting structure 4 is bearing 4a, and bearing 4a is assemblied in by axle sleeve 4b and dials between line rotating shaft 1 and the frame 2, bearing 4a inner ring is placed in dials line rotating shaft 1 outside, bearing 4a outer ring is connected with frame 2 tight fits, and present embodiment middle (center) bearing 4a is a deep groove ball bearing, and quantity is two.Because thread-moving device will be in the state that constantly recycles, dial line bar 3 and reset finishing to need to make after once dialling line action, prepare for dial line next time, so on frame 2, be provided with wind spring 11, wind spring 11 has body and stretches out the reset terminal and the stiff end of body, the body of wind spring 11 is located on the pin rod 1, and reset terminal is resisted against on the pin rod 2 10, and stiff end is resisted against on the frame 2.
During the work of this Sewing machines thread-moving device, the shift fork end of the spool shift fork 5 of electromagnetic valve 8 is done ascending motion, simultaneously the reset terminal of wind spring 11 is subjected to producing strain after the driving force of spool of electromagnetic valve 8, hinged end drivening rod 6 motions of shift fork 5, connecting rod 6 drives cam 7 again and rotates, also rotate with the line rotating shaft 1 of dialling that cam 7 is connected, thereby make line bar 3 rotations of dialling that are fixed in group line rotating shaft 1 once dial the line action to finish, this moment, the driving force of spool disappeared, the elastic force that the reset terminal of wind spring 11 has makes the spool of electromagnetic valve 8 and dials line bar 3 and resets, and prepares for dial line next time.Very frequent when dialling the rotation of line rotating shaft 1, but directly contact frame 2 of group line rotating shaft 1 has been avoided in the setting of bearing 4a, the wearing and tearing of group line rotating shaft 1 have been reduced, prolonged the service life of group line rotating shaft 1, and the support effects of bearing 4a is good, make that group line rotating shaft 1 stability of rotation is good, guaranteed the precision of group line.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has used group line rotating shaft 1, frame 2, dialled terms such as line bar 3, supporting structure 4, bearing 4a, axle sleeve 4b, shift fork 5, connecting rod 6, cam 7, electromagnetic valve 8, pin rod 1, pin rod 2 10, wind spring 11, E shape back-up ring 12, positioning sleeve 13, bolt 14 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.
Claims (9)
1. Sewing machines thread-moving device, comprise the frame (2) of dialling line rotating shaft (1) and being fixed on the Sewing machines head, described group of line rotating shaft (1) is rotating to be arranged on the frame (2), one end of described group of line rotating shaft (1) is fixed with the drive link assembly, the other end of dialling line rotating shaft (1) is fixed with dials line bar (3), it is characterized in that, described group of line rotating shaft (1) and frame (2) axial location are provided with between described group of line rotating shaft (1) and the frame (2) and can reduce the supporting structure (4) of dialling line rotating shaft (1) wearing and tearing.
2. Sewing machines thread-moving device according to claim 1 is characterized in that, described supporting structure (4) is bearing (4a), and described bearing (4a) inner ring is placed in dials line rotating shaft (1) outside, and bearing (4a) outer ring is connected with frame (2) tight fit.
3. Sewing machines thread-moving device according to claim 2 is characterized in that, the quantity of described bearing (4a) is one to four.
4. Sewing machines thread-moving device according to claim 3 is characterized in that, described bearing (4a) is a deep groove ball bearing.
5. Sewing machines thread-moving device according to claim 3 is characterized in that, described bearing (4a) is a needle bearing.
6. Sewing machines thread-moving device according to claim 1 is characterized in that, described supporting structure (4) is some column needle rollers, and described needle roller axially is filled in to be dialled between line rotating shaft (1) and the frame (2).
7. according to any described Sewing machines thread-moving device of claim 1 to 6, it is characterized in that, described drive link assembly comprises shift fork (5), connecting rod (6), cam (7) and be connected in electromagnetic valve (8) on the frame (2), one end of described shift fork (5) is a hinged end, the other end is the shift fork end, be the middle part between hinged end and the shift fork end, the middle part of shift fork (5) is hinged on the frame (2) by pin rod one (9), the shift fork end is connected with the spool of electromagnetic valve (8), hinged end is hinged by pin rod two (10) and connecting rod (6), the other end of described connecting rod (6) and cam (7) are hinged, and cam (7) is connected mutually with group line rotating shaft (1).
8. Sewing machines thread-moving device according to claim 7, it is characterized in that, described frame (2) is provided with wind spring (11), described wind spring (11) has body and stretches out the reset terminal and the stiff end of body, the body of wind spring (11) is located on the pin rod one (9), reset terminal is resisted against on the pin rod two (10), and stiff end is resisted against on the frame (2).
9. Sewing machines thread-moving device according to claim 7 is characterized in that, offers in the described group of line rotating shaft (1) to be positioned at frame (2) end and near the groove of dialling line bar (3), E shape back-up ring (12) to be housed in the described groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200907398U CN202072904U (en) | 2011-03-30 | 2011-03-30 | Thread-shifting device of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200907398U CN202072904U (en) | 2011-03-30 | 2011-03-30 | Thread-shifting device of sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202072904U true CN202072904U (en) | 2011-12-14 |
Family
ID=45111010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200907398U Expired - Fee Related CN202072904U (en) | 2011-03-30 | 2011-03-30 | Thread-shifting device of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202072904U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104216537A (en) * | 2013-05-31 | 2014-12-17 | 名硕电脑(苏州)有限公司 | Mouse |
| CN108301720A (en) * | 2018-02-28 | 2018-07-20 | 无锡德林防务装备股份有限公司 | Multi-functional sliding door |
-
2011
- 2011-03-30 CN CN2011200907398U patent/CN202072904U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104216537A (en) * | 2013-05-31 | 2014-12-17 | 名硕电脑(苏州)有限公司 | Mouse |
| CN104216537B (en) * | 2013-05-31 | 2017-04-19 | 名硕电脑(苏州)有限公司 | Mouse |
| CN108301720A (en) * | 2018-02-28 | 2018-07-20 | 无锡德林防务装备股份有限公司 | Multi-functional sliding door |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111214 Termination date: 20140330 |