CN1190539C - Horizontal shuttle opening device - Google Patents
Horizontal shuttle opening device Download PDFInfo
- Publication number
- CN1190539C CN1190539C CNB011435372A CN01143537A CN1190539C CN 1190539 C CN1190539 C CN 1190539C CN B011435372 A CNB011435372 A CN B011435372A CN 01143537 A CN01143537 A CN 01143537A CN 1190539 C CN1190539 C CN 1190539C
- Authority
- CN
- China
- Prior art keywords
- shuttle
- mentioned
- rotating
- race
- eccentric cam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B57/00—Loop takers, e.g. loopers
- D05B57/08—Loop takers, e.g. loopers for lock-stitch sewing machines
- D05B57/10—Shuttles
- D05B57/14—Shuttles with rotary hooks
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B63/00—Devices associated with the loop-taker thread, e.g. for tensioning
Abstract
Provided is an opener device for a horizontal shuttle comprising a horizontal shuttle having shuttle shaft, shuttle bed and rotary shuttle and an opening hook acting on the rotary shuttle contact portion, wherein a loop passby clearance is formed on rotary locking portion under the needle plate. It is characterized in comprising: a cam shaft rotated at a rotation speed 1/2 of that of a shuttle shaft; an eccentric cam provided in the upper end of the cam shaft; an opener guide arm having its one end part rotatably fitted to the eccentric cam and another end fixed on the opening hook; an opener guide link having its base end part rotatably supported to a link shaft fitted to a hook saddle and its tip part connected to the other end part of the opener guide arm. The opening hook is fixed to the other end of the opener guide arm and acting on the front end of opening hook of the rotary shuttle contact protion, and along the same direction of the revolving direction of the shuttle bed, one elliptic motion one time about two rotations of an outer shuttle is performed in direction of rotary shuttle contact portion substantially.
Description
Technical field
The present invention relates to the opening device of a kind of horizontal shuttle (horizontal still), thereby this horizontal shuttle is used for bump bonding with rotating shuttle is actively tied in the flat seam machine that rotating shuttle retainer below the needle plate remains rotating shuttle non-rotating state, in this horizontal shuttle, by making rotating shuttle forcibly, pass through the gap thereby form wire loop at the rotating shuttle retainer towards the direction revolution opposite with the shuttle race gyratory directions.
Background technology
The opening device of this existing horizontal shuttle for example has been disclosed in Japanese kokai publication hei 11-114264 communique, describes according to Fig. 4-Fig. 8 below.
As Fig. 4 and shown in Figure 6, symbol 102 is but that free rotaring ground supporting is in the shuttle axle of the shuttle pillow block that does not illustrate in the drawings, in the upper end of shuttle axle 102, shuttle race 103 with the spur 103a that catches wire loop and the eccentric cam 110 that is disposed at shuttle race 103 belows are set with being integral with shuttle axle 102.
Shuttle axle 102 is such as everyone knows, turns round for 2 weeks towards arrow C direction (clockwise direction) during not shown shank moves up and down 1 time.
In shuttle race 103, be bearing in the rotating shuttle 104 of periphery formation bump bonding 104a and rotating shuttle contact site 104b pivotally.
Be formed for constituting pair of stopper members 5a, the 5b of rotating shuttle retainer below the needle plate 5 that (does not illustrate in the drawings) above the board above being fixed in rotating shuttle 104, bump bonding 104a protrudes and is configured between stopper element 5a, 5b, makes rotating shuttle 104 be engaged in a side stopper element not together pivotally when shuttle race 103 revolutions.
One end 111a of open guidance arm 111 can the chimeric pivotally supporting of above-mentioned relatively eccentric cam 110, at the other end 111b by the fixing hook 106 of opening of screw 106b.The swinging end 113b that is bearing in the open guidance connecting rod 113 of the pitman shaft 112 that is fixed in the shuttle pillow block swingably is connected in the pars intermedia of open guidance arm 111 pivotally by pin 114.
Usually, as shown in Figure 6, by along with shuttle race 103 towards the revolution of arrow C direction and the friction that produces makes bump bonding 104a join a side stopper element 5a to, like this, being caught and be around in rotating shuttle 104 wire loop on every side by spur 103a can not be by between bump bonding 104a and the stopper element 5a, so the tension force that online circulating application strengthens forms action to stitching and produces harmful effect.
For this reason, opening hook 106 passes through easily in order to make this wire loop, as shown in Figure 7, to open hook leading section 106a and touch rotating shuttle contact site 104b, make bump bonding 104a rely on the opposite direction of gyratory directions (arrow C direction) with shuttle race 103 forcibly, between bump bonding 104a and stopper element 5a, form wire loop and pass through the gap.
In this opening device, the revolution of the eccentric cam 110 that produces by the revolution that is accompanied by shuttle axle 102, making open guidance arm 111 be subjected to open guidance connecting rod 113 restrictedly swings, at this moment, as shown in Figure 8, open hook leading section 106a around the direction identical with the gyratory directions of shuttle race 103,1 of shuttle race 103 week was turned round the elliptic motion that the direction of carrying out 1 crest line towards cardinal principle along rotating shuttle contact site 104b has major diameter relatively.
Therefore, open the relative rotating shuttle contact site of hook leading section 106a 104b and contact along the crest line direction of rotating shuttle contact site 104b lentamente, so impulsive sound is little.Equally, the severe impact of the stopper element 5b below the bump bonding 104a of rotating shuttle 104 and the needle plate 5 also can be avoided, and like this, can not produce big impulsive sound, can form wire loop between bump bonding 104a and stopper element 5a and pass through the gap.
In flat seam machine, such as everyone knows, move up and down during 1 time at shank, shuttle race turned round for 2 weeks, form 1 stitching, in the above-mentioned existing opening device that is shown in Fig. 4 like that, when forming 1 stitching, open hook leading section and rotating shuttle contact site and 2 impacts of bump bonding and stopper element generation.
And, because 1 circumference during wire loop only turns round in 2 weeks of shuttle race turns over and is around in the journey around the rotating shuttle, so, we can say 1 time in the 2 subelliptics motion of the unlatching hook leading section corresponding with 2 week revolutions of rotating shuttle be unwanted motion, so, produced 1 unnecessary impact and by its impulsive sound that causes.
For this reason, impact the consumption breakage that makes each impact portion and be easy to take place, reduced the life-span, simultaneously, make operating environment variation etc. by little impulsive sound.
The shuttle race of the general horizontal shuttle of flat seam machine and shuttle axle become one, and eccentric cam is not set, but in existing opening device shown in Figure 4, owing to must eccentric cam be set at the shuttle axle, therefore become special-purpose horizontal shuttle.Originally, shuttle was handled as running stores, and when becoming special-purpose shuttle, manufacturing price uprises, so, as running stores, can operating cost be uprised it.
In addition, the occasion that becomes one at shuttle axle and shuttle race and eccentric cam, the rotational phase of shuttle race changes and opens the moment that the hook leading section acts on the rotating shuttle contact site relatively, exists to be difficult to the problem that corresponding sewing condition changes.
Summary of the invention
The objective of the invention is to, unlatching hook leading section when further reduction makes rotating shuttle turn round towards the direction opposite with the shuttle race gyratory directions forcibly and the impulsive sound of rotating shuttle contact site, avoid the impact of rotating shuttle bump bonding and needle plate stopper element 5b, simultaneously, make it possible to use the general horizontal shuttle of flat seam machine, and can change the effect of unlatching hook constantly.
In order to address the above problem, a first aspect of the present invention such as Fig. 1, a kind of opening device of horizontal shuttle is provided as shown in Figure 2, the opening device of this horizontal shuttle has horizontal shuttle and opens hook 6, this horizontal shuttle is by shuttle axle 2, shuttle race 3, and rotating shuttle 4 constitutes, this shuttle axle 2 is supported on shuttle pillow block 1 pivotally, this shuttle race 3 is fixed in above-mentioned shuttle axle 2, this rotating shuttle 4 is supported on above-mentioned shuttle race 3 pivotally, form bump bonding 4a and rotating shuttle contact site 4b in periphery simultaneously, above-mentioned bump bonding 4a is actively tied in the rotating shuttle retainer 5a below the needle plate 5,5b, this unlatching hook 6 acts on above-mentioned rotating shuttle contact site 4b, and the rotating shuttle retainer 5a below above-mentioned needle plate 5 forms wire loop and passes through the gap; It is characterized in that: have camshaft 8, eccentric cam 10, open guidance arm 11, and open guidance connecting rod 13, this camshaft 8 is by 1/2 the rotating speed revolution of reducing gear (cam drive pinion 7 and cam drive gear wheel 9) with above-mentioned shuttle axle 2, this eccentric cam 10 is located at the upper end of above-mentioned camshaft 8, one end 11a of this open guidance arm 11 is matched with above-mentioned eccentric cam 10 pivotally, at the fixing above-mentioned unlatching hook 6 of the other end 11b, this open guidance connecting rod 13 is bearing in base end part 13a the pitman shaft 12 that is fixed in above-mentioned shuttle pillow block 1 pivotally, leading section 13b is connected to the other end 11b of above-mentioned open guidance arm 11, act on the leading section 6a court direction identical with the gyratory directions of above-mentioned shuttle race 3 of the above-mentioned unlatching hook 6 of above-mentioned rotating shuttle contact site 4b, the revolution of 2 of shuttle race 3 weeks is carried out 1 time in the elliptic motion that has major diameter on the direction of rotating shuttle contact site 4b relatively.
According to this a first aspect of the present invention, because the camshaft outside the shuttle axle is provided with eccentric cam, the rotating speed that makes camshaft is 1/2 of a shuttle axle, so, open the 2 weeks revolution of the relative shuttle race of hook leading section and carry out the motion of 1 subelliptic, 2 circumferences that can eliminate the such relative shuttle race of the prior art 1 time living unnecessary impulsive sound of changing the line of production.In addition, can go over further to contact the rotating shuttle contact site lentamente along the direction ratio of the crest line of rotating shuttle contact site in cardinal principle owing to open the hook leading section, so impulsive sound further reduces.
In addition, owing to the camshaft that eccentric cam is set to outside the shuttle axle, so, do not need special-purpose horizontal shuttle, can use general horizontal shuttle.
A second aspect of the present invention is characterised in that by at above-mentioned camshaft 8 above-mentioned eccentric cam 10 being set, the leading section 6a that the feasible rotational phase of above-mentioned relatively shuttle race 3 is easily regulated above-mentioned unlatching hook 6 acts on the moment of above-mentioned rotating shuttle contact site 4b.
According to this a second aspect of the present invention, owing to the camshaft that eccentric cam is set to outside the shuttle axle, so shuttle race changes the rotational phase of eccentric cam independently relatively, easily the rotational phase of relative shuttle race is regulated and is opened the moment that the hook leading section acts on the rotating shuttle contact site.
Description of drawings
Fig. 1 is that the opening device that the horizontal shuttle of the invention process form is shown is wanted the perspective view of portion.
Fig. 2 is that the opening device that the horizontal shuttle of the invention process form is shown is wanted the plane of portion.
Fig. 3 is that the opening device that the horizontal shuttle of the invention process form is shown is wanted the perspective view of portion.
Fig. 4 is that the opening device that the existing level shuttle is shown is wanted the plane of portion.
Fig. 5 is that the opening device that the existing level shuttle is shown is wanted the side view of portion.
Fig. 6 is opening device that the existing level shuttle the is shown plane when not using.
Fig. 7 is opening device that the existing level shuttle the is shown plane when using.
Fig. 8 is the partial plan layout that the movement locus of opening the hook leading section is shown.
The specific embodiment
Below with reference to Fig. 1, Fig. 2, and Fig. 3 the invention process form is described.
As shown in Figure 1, the shuttle axle 2 that is supported on shuttle pillow block 1 pivotally turned round for 2 weeks towards arrow C direction (clockwise direction) during unshowned shank moves up and down 1 time.Fixedly have the shuttle race 3 of the spur 3a that is used to catch wire loop in the upper end of shuttle axle 2, be bearing in the rotating shuttle 4 that periphery forms bump bonding 4a and rotating shuttle contact site 4b pivotally at shuttle race 3.As shown in Figure 2, the bump bonding 4a of rotating shuttle 4 is actively tied between pair of stopper members 5a and the 5b, described stopper element 5a, 5b form the rotating shuttle retainer below the needle plate 5 that is fixed on the not shown board in rotating shuttle 4 tops, and these formations have identical formation with existing general horizontal shuttle.
In Fig. 3, cam drive pinion 7 usefulness limit screw 7a are fixed on the bottom of described shuttle axle 2.
Camshaft 8 is fixed on the shuttle pillow block 1 rotationally, drives gear wheel 9 in its bottom by limit screw 9a stationary cam, and this gear wheel 9 has 2 times the number of teeth of the number of teeth of pinion 7, makes this cam drive gear wheel 9 and 7 engagements of cam drive pinion.Constitute reducing gear by above-mentioned cam drive pinion 7 and cam drive gear wheel 9.
For this reason, camshaft 8 1/2 the rotating speed court of press shuttle axle 2 under the revolution of shuttle axle 2 drives turns round with shuttle axle 2 opposite directions (the arrow D direction among Fig. 2).
In the upper end of camshaft 8, with camshaft 8 eccentric cam 10 is set with being integral, the end 11a cooperation with open guidance arm 11 pivotally is supported on eccentric cam 10.
On the 11b of the other end of open guidance arm 11, fix unlatching hook 6 by limit screw 6b.At shuttle pillow block 1 stationary links axle 12, support the base end part 13a of open guidance connecting rod 13 swingably at this pitman shaft 12, insert in the bottom of the other end of open guidance arm 11 11b and connect the link pin 14 (Fig. 2) that above the swinging end 13b of open guidance connecting rod 13, protrudes.
As shown in Figure 2, the axle center of pitman shaft 12 extended line that connects the axle center of the axle center of eccentric cam 10 and link pin 14 relatively is disposed at shuttle axle 2 sides.Like this, can carry out elliptic motion around the direction identical with the gyratory directions (the arrow C direction of Fig. 2) of shuttle race 3.
As shown in Figure 3, in the lower surface of camshaft 8 groove 8a is set, unclamps the limit screw 9a of cam drive gear wheel 9, the front end of screwdriver is inserted into groove 8a, can make camshaft 8 is eccentric cam 10 revolutions.
Embodiments of the invention are above such formation, below according to Fig. 1, Fig. 2, Fig. 3 illustration.
When driving Sewing machines, shuttle axle 2 turns round towards the arrow C direction with shuttle race 3.Under the revolution of this shuttle race 3 drove, rotating shuttle 4 made rotating shuttle bump bonding 4a join the left side of the stopper element 5a of needle plate 5 to by accepting the effect of the turning power of arrow C direction with the frictional force of shuttle race 3.
The revolution of shuttle axle 2 is transmitted by cam drive pinion 7 and cam drive gear wheel 9 back of slowing down, and 1/2 the rotating speed that camshaft 8 and eccentric cam 10 are pressed shuttle axle 2 turns round towards arrow D direction.Revolution by eccentric cam 10, the other end 11b that makes open guidance arm 11 is being limited by open guidance connecting rod 13 and is swinging and towards the motion that moves forward and backward of the length direction of open guidance arm 11, the leading section 6a that opens hook 6 as shown in Figure 8 relatively the revolution of 2 of shuttle race 3 weeks carry out 1 time in the elliptic motion that has major diameter substantially on the direction of the crest line of rotating shuttle contact site 4b.The extended line that the axle center of pitman shaft 12 connects the axle center of the axle center of eccentric cam 10 and link pin 14 relatively is disposed at shuttle axle 2 sides, so the leading section 6a that opens hook 6 can carry out elliptic motion around the direction identical with the gyratory directions of shuttle race 3.
Therefore, 1 time elliptic motion is carried out in 2 weeks revolution by relative shuttle race 3, leading section 6a is contacted with rotating shuttle contact site 4b more lentamente than prior art, resistance makes rotating shuttle bump bonding 4a towards revolution counterclockwise with the frictional force of shuttle race 3, and the left side of stopper element 5a between, form the gap of passing through of catching and being around in wire loop around the rotating shuttle 4 by spur 3a.
In addition, to make camshaft 8 be eccentric cam 10 revolution by screwdriver being inserted into groove 8a, and shuttle race 3 changes the rotational phase of eccentric cams 10 relatively, can be easily relatively the rotational phase of shuttle race 3 adjusting leading section 6a act on moment of rotating shuttle contact site 4b.
The invention is not restricted to above-mentioned form of implementation, for example, also can constitute reducing gear by timing belt and timing belt wheel.
In addition, also can eccentric cam be fixed in the upper end of camshaft,, change the rotational phase of the relative shuttle race of eccentric cam by unclamping this screw by screw.
According to a first aspect of the present invention, because the camshaft outside the shuttle axle is provided with eccentric cam, the rotating speed that makes camshaft is 1/2 of a shuttle axle, so, open the 2 weeks revolution of the relative shuttle race of hook leading section and carry out the motion of 1 subelliptic, 2 circumferences that can eliminate the such relative shuttle race of prior art change the line of production 1 unnecessary impact living and the impulsive sound that brings thus, so, can improve the life-span and improve operating environment.In addition, can go over further to contact the rotating shuttle contact site lentamente along the direction ratio of the crest line of rotating shuttle contact site in cardinal principle owing to open the hook leading section, so impulsive sound further reduces.
In addition because eccentric cam is set to camshaft outside the shuttle axle, so, do not need special-purpose horizontal shuttle, can use general horizontal shuttle, obtain to make manufacturing price as the shuttle of running stores lower, prevent the good result that operating cost increases.
According to this a second aspect of the present invention, on the basis aspect the 1st, eccentric cam is set to camshaft outside the shuttle axle, shuttle race changes the rotational phase of eccentric cam independently relatively, so, easily the rotational phase of relative shuttle race is regulated and is opened the moment that the hook leading section acts on the rotating shuttle contact site, obtains the excellent results of the variation of easy corresponding sewing condition.
Claims (2)
1. the opening device of a horizontal shuttle has horizontal shuttle and opens hook,
This horizontal shuttle by shuttle axle, shuttle race, and rotating shuttle constitute,
This shuttle axle is supported on the shuttle pillow block pivotally,
This shuttle race is fixed in above-mentioned shuttle axle, and this rotating shuttle is supported on above-mentioned shuttle race pivotally, forms bump bonding and rotating shuttle contact site in periphery simultaneously, and above-mentioned bump bonding is actively tied in the rotating shuttle retainer below the needle plate;
This unlatching hook acts on above-mentioned rotating shuttle contact site, and the rotating shuttle retainer below above-mentioned needle plate forms wire loop and passes through the gap; It is characterized in that: have camshaft, eccentric cam, open guidance arm, reach the open guidance connecting rod,
This camshaft is by 1/2 the rotating speed revolution of reducing gear with above-mentioned shuttle axle,
This eccentric cam is located at the upper end of above-mentioned camshaft,
One end of this open guidance arm is matched with above-mentioned eccentric cam pivotally, the fixing above-mentioned unlatching hook in the other end, this open guidance connecting rod is bearing in the pitman shaft that is fixed in above-mentioned shuttle pillow block pivotally with base end part, leading section is connected to the other end of above-mentioned open guidance arm
The leading section of above-mentioned unlatching hook that acts on above-mentioned rotating shuttle contact site is towards the direction identical with the gyratory directions of above-mentioned shuttle race, relatively the revolution of 2 of shuttle race weeks carry out 1 time basic along the elliptic motion that has major diameter on the direction of rotating shuttle contact site.
2. the opening device of horizontal shuttle according to claim 1 is characterized in that: can regulate the rotational phase between above-mentioned shuttle race and the above-mentioned eccentric cam.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP386196/2000 | 2000-12-20 | ||
| JP2000386196A JP2002186795A (en) | 2000-12-20 | 2000-12-20 | Opener device for horizontal shuttle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1360104A CN1360104A (en) | 2002-07-24 |
| CN1190539C true CN1190539C (en) | 2005-02-23 |
Family
ID=18853334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011435372A Expired - Fee Related CN1190539C (en) | 2000-12-20 | 2001-12-12 | Horizontal shuttle opening device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2002186795A (en) |
| KR (1) | KR100722641B1 (en) |
| CN (1) | CN1190539C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009100901A (en) * | 2007-10-23 | 2009-05-14 | Brother Ind Ltd | Shuttle mechanism for sewing machine |
| JP5312011B2 (en) * | 2008-03-06 | 2013-10-09 | Ｊｕｋｉ株式会社 | sewing machine |
| JP5197191B2 (en) * | 2008-07-01 | 2013-05-15 | Ｊｕｋｉ株式会社 | Sewing machine opener mechanism |
| JP2010104550A (en) * | 2008-10-30 | 2010-05-13 | Brother Ind Ltd | Horizontal shuttle for sewing machine |
| JP6001424B2 (en) * | 2011-12-26 | 2016-10-05 | Juki株式会社 | sewing machine |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS595320B2 (en) * | 1976-09-24 | 1984-02-03 | アイシン精機株式会社 | Automatic thread cutting device for sewing machine |
| JPS56119292A (en) * | 1980-02-21 | 1981-09-18 | Mitsubishi Electric Corp | Driving device for automatic cotton cutting sewing machine |
| JPS57148985A (en) * | 1981-03-06 | 1982-09-14 | Mitsubishi Electric Corp | Opener device for sewing machine |
| DE8437345U1 (en) * | 1984-12-20 | 1986-09-18 | Pfaff Industriemaschinen Gmbh, 6750 Kaiserslautern | Lockstitch sewing machine with a hook |
| JPS61154597A (en) * | 1984-12-25 | 1986-07-14 | 三菱電機株式会社 | Hook apparatus of sewing machine |
| JPH05285286A (en) * | 1992-04-08 | 1993-11-02 | Juki Corp | Opener of horizontally rotating shuttle |
| JPH08309067A (en) * | 1995-05-18 | 1996-11-26 | Brother Ind Ltd | Shuttle device for sewing machine |
| JPH09253368A (en) * | 1996-03-27 | 1997-09-30 | Brother Ind Ltd | Shuttle device for sewing machine |
| JP3943234B2 (en) * | 1998-04-13 | 2007-07-11 | Ｊｕｋｉ株式会社 | Sewing machine opener |
| JP3805083B2 (en) * | 1997-10-13 | 2006-08-02 | Ｊｕｋｉ株式会社 | Sewing machine opener |
-
2000
- 2000-12-20 JP JP2000386196A patent/JP2002186795A/en active Pending
-
2001
- 2001-12-12 CN CNB011435372A patent/CN1190539C/en not_active Expired - Fee Related
- 2001-12-18 KR KR1020010080559A patent/KR100722641B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR100722641B1 (en) | 2007-05-28 |
| JP2002186795A (en) | 2002-07-02 |
| KR20020050128A (en) | 2002-06-26 |
| CN1360104A (en) | 2002-07-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20050223 Termination date: 20111212 |