CN1307335C - Sewing machine with needle feed - Google Patents
Sewing machine with needle feed Download PDFInfo
- Publication number
- CN1307335C CN1307335C CNB031241743A CN03124174A CN1307335C CN 1307335 C CN1307335 C CN 1307335C CN B031241743 A CNB031241743 A CN B031241743A CN 03124174 A CN03124174 A CN 03124174A CN 1307335 C CN1307335 C CN 1307335C
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- Prior art keywords
- making
- needle
- thing
- feeding tooth
- feeding
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Abstract
A needle feed sewing machine has a feed dog which gets a fabric sewn at a specified stitching pitch in cooperation with a needle while vertically and horizontally moving within an opening of a throat plate rotating to feed the fabric; a thread cutting mechanism for cutting the end parts of the threads stitched into the fabric; and a feed dog reversing mechanism which moves the feed dog by a distance narrower than the switching pitch while keeping it under the horizontal plane of the throat plate by reversing the rotation of the feed dog at a timing corresponding to the angle of the spindle before the thread end parts are cut from the position where the feed dog gets into under the horizontal plane of the throat plate in the process of cutting the thread end parts of the fabric.
Description
Technical field
The present invention relates to the so-called Sewing machine with needle feed of making the thing feeding under the state of making thing being needled into, be specifically related to the Sewing machine with needle feed that a kind of shortening residues in the line end of making the thing the inside.
Background technology
In the technology of shortening by the line end of traditional stitching sewing machine, having a kind of is the motion shown in the Japanese patent laid-open 11-192393 communique.In this Sewing machines, make the thing line end in order to shorten, adopted line seizure member can be comprised with the mobile structure of cutter head member:
1) when pin stops at upper/lower positions, Sewing machines has a short time that makes thread take-up tension lever arrive top dead-centre to drive the process of Sewing machines again after stopping;
2) Sewing machines makes line catch body and shifts to this separation point position or catching position in this motion stage, switches to the process of direction of retreat to the feed direction of 1 feeding key element of major general;
3) be positioned at its top dead-centre and at least 1 feeding key element at thread take-up tension lever and move to the process that the moment that equals feeding needle gage one half-distance of looking younger cuts off towards opposite direction with regular feed direction with making thing.
This Sewing machines has and can shorten the following line end of making thing and make and make beyond the region of objective existence and see good effect.
Yet, in above-mentioned traditional technology,, therefore exist and may damage the problem of making thing because before cutting off the line end of making thing, the feeding tooth must oppositely move with making thing.
And, make the residual line of side in order to shorten, can near pin hole, set line and cut off a little.Promptly, as long as the dead knife that the line that is fixed is cut off usefulness is configured near the pin hole.But, because the feeding tooth in the Sewing machine with needle feed is provided with pin hole, make the thing feeding to feeding tooth and pin cooperative action, be difficult to dead knife is configured near the pin hole.Also exist the movably complicated problem of mechanism of dead knife.
Summary of the invention
In view of the above problems, the object of the present invention is to provide a kind of can the damage to make thing and can shorten the Sewing machine with needle feed of making the thing thread end.
In order to realize the foregoing invention purpose, the invention provides a kind of Sewing machine with needle feed, comprising:
Pin links with machine spindle, and makes making thing;
Needle plate, the described thing of making of mounting, and have opening;
The feeding tooth, with described pin cooperative action, and with fixed needle gage make the described thing of making, carry out described feeding of making thing while turn round in the opening of described needle plate, to reach up and down to move horizontally, its characteristics are that this Sewing machine with needle feed also comprises:
Feeding tooth reversing gearbox, in the operation that described thread end after making thing and making is cut off, be positioned under the described state of making on the thing at described pin, the position of described feeding tooth under the described needle plate face, reverse by the described revolution that makes the feeding tooth, on one side described feeding tooth is remained under the described needle plate face simultaneously not and the described thing position contacting of making, on one side with less than the distance of described needle gage to moving horizontally opposite direction and move with described;
Thread cutting mechanism after this feeding tooth reversing gearbox action, is cut off having made the described thread end of making thing.
Wherein, in the operation that thread end is cut off, pin be positioned at the state made on the thing by make machine spindle just changeing decide angle and obtain.
This Sewing machine with needle feed is cut off in the operation described thread end, feeding tooth reversing gearbox is from being embedded in the position under the needle plate horizontal plane with the feeding tooth, reverse by the revolution that makes the feeding tooth, while the state that the feeding tooth is maintained at imbed under the needle plate horizontal plane moves with the distance less than needle gage.Then, thread cutting mechanism is cut off thread end.Like this, cutting off in the operation of thread end, even feeding tooth reversed turning and oppositely moving.Do not contact yet, be not easy to damage the effect of making thing so have with making thing.
For example, in the described feeding tooth of beginning reversed, if the top dead-centre of pin is set at 0 ° of main shaft angle, then Sewing machine with needle feed was being moderate between roughly 250 °～50 ° of the angles of main shaft 2, and, when the feeding tooth is reverse less than the distance of needle gage preferably needle gage 3/4.
Thread cutting mechanism in the Sewing machine with needle feed of the present invention is characterized in that, but the seizure member that is moved by the dead knife that is fixed and capture line and straight line constitutes.
This Sewing machine with needle feed is because only wired seizure member is removable and the dead knife member is fixed, so its effect is to need not to resemble line must be set traditional catch member with body of tool bit complex mechanism movably.
Description of drawings
Fig. 1 is the mechanism map of the Sewing machine with needle feed of expression one embodiment of the invention.
Fig. 2 is the thread cutting mechanism longitudinal section of Sewing machine with needle feed shown in Figure 1.
Fig. 3 is the start line chart that each one of Sewing machines shown in Figure 1 moves.
Fig. 4 is the pin of Sewing machines shown in Figure 1 and the front view of feeding mandibular joint system.
Fig. 5 is each one of Sewing machines shown in Figure 1 and the start line chart of main shaft angular relationship.
Fig. 6 is the longitudinal section that the feeding tooth of Sewing machines shown in Figure 1 reverses.
The specific embodiment
Be applicable to one embodiment of the invention of Sewing machine with needle feed below with reference to Fig. 1～Fig. 6 explanation.Fig. 1 is the mechanism map of the Sewing machine with needle feed of expression one embodiment of the invention, Fig. 2 is the thread cutting mechanism longitudinal section of Sewing machine with needle feed shown in Figure 1, Fig. 3 is the start line chart that each one of Sewing machines shown in Figure 1 moves, Fig. 4 is the pin of Sewing machines shown in Figure 1 and the front view of feeding mandibular joint system, Fig. 5 is each one of Sewing machines shown in Figure 1 and the start line chart of main shaft angular relationship, and Fig. 6 is the longitudinal section that the feeding tooth of Sewing machines shown in Figure 1 reverses.
Among Fig. 1 and Fig. 2, Sewing machine with needle feed comprises: have and make suture needle that thing is a cloth 61 and the pin portion 100 that inserts the needle bar bracket 19 that is connected with the shank 20 that can move up and down; Can make the reciprocating pin up-down mechanism 150 of pin portion 100 above-below directions; Can make the reciprocating pin horicontal motion mechanism 200 of pin portion 100 horizontal directions; Can make the reciprocating feeding tooth of feeding tooth 11 above-below directions up-down mechanism 250 with pin hole 51; Can make the flat motion 300 of the reciprocating feeding dentifrice water of feeding tooth 11 horizontal directions; Adjust the horizontal direction guiding mechanism 350 of pin portion 100 and feeding tooth 11 horizontal direction reciprocating motion amounts; The feeding tooth reversing gearbox 400 that feeding tooth 11 feed directions are reversed; And will make the thread cutting mechanism 450 that the line end (hereinafter referred to as the cloth line end) on cloth 61 is cut off.In addition, link with the rotating lower shaft 6 of interlock by main shaft 2 and belt 5 thereof with the pin 3 common shuttles 4 that on cloth 61, form stitching, and be incorporated in the base plate (not shown).
Pin horicontal motion mechanism 200 comprises: the eccentric cam 26 that is fixed in lower shaft 6 by belt pulley 1 and belt 5 thereof; One end is inserted the connecting rod 12 that is embedded in eccentric cam 26, the extension of other end horizontal direction; The square 15 that the other end of connecting rod 12 combines with connecting rod 14 front ends; Have sliding tray 18 that guides square 15 slips and the straight feeding adjustment means 16 that supports axial region 17,17 at two ends pivotally; The armed lever 13 that one end links by connecting rod 14 bindings, the other end and swinging axle 10; And link fixing and be fixed with the trunnion axis 21 of pin portion 100 by connecting rod 22,23 and the armed lever 24 that is fixed in swinging axle 10, can make the 100 horizontal direction reciprocating motions of pin portion.
The structure of feeding tooth up-down mechanism 250 is, the feeding cam up and down 7 that is fixed in lower shaft 6 makes the feeding tooth 11 above-below direction reciprocating motions of being fixed in feeding table 9 by tooth fork 8, the structure of the flat motion 300 of feeding dentifrice water is to make the 11 horizontal direction reciprocating motions of feeding tooth by the swinging axle 10 with 11 bindings of feeding tooth.
Horizontal direction guiding mechanism 350 comprises: the operating axis 32 of pedestal on sewing machine arm (not shown); Be fixed in the protruding arm 34 of operating axis 32; Apply the helical spring 35 of elastic force to protruding arm 34 belows; Axle is supported on operating axis 32 and is formed with inclined cam surface 29 is used in positive feeding with inclined cam surface 28 and contrary feeding V word shape armed lever 27; And with the connecting rod 30,31 of V word shape armed lever 27 with axial region 17,16 bindings of horizontal adjustment means, positive feeding with inclined cam surface 28 all the time with the front end crimping of the operating axis 37 of feeding adjustment disk 36, V word shape armed lever 27 turns round along with the revolution of feeding adjustment disk 36, by the angle of inclination that connecting rod 30,31 changes the sliding tray 18 of the straight feeding adjustment means 16 that links with axial region 17, can adjust the reciprocating motion amount of feeding tooth 11 and pin portion 100 horizontal directions thus.
The top dead-centre of the pin 3 of Fig. 3 for the feeding tooth 11 of said structure, pin 3 motions the time is set at the start line chart of 0 ° of the angle of main shaft 2.Feeding tooth 11 and pin 3 center with main shaft 2 when horizontal level is an initial point, and common cloth feeding direction is a forward, and the surface (top) with needle plate 50 during the upright position is an initial point.The motion of Figure 13 (a)～(f) this pin 3 of expression and feeding tooth 11.That is, feeding tooth 11 has formed the ellipticity motion that clockwise direction rotates, and the horizontal motion of pin 3 and feeding tooth 11 are synchronous, and the motion of above-below direction is roughly opposite with feeding tooth 11, has formed the elliptoid movement locus that rotates in the counterclockwise direction.
Feeding tooth reversing gearbox 400 has manually and automatic two kinds, manually be to have made 27 revolutions of V word shape armed lever when below Fig. 1, having pushed having overcome the effect of helical spring 35 with the reverse bar 33 that operating axis 32 1 ends link, till the operating axis 37 that adjustment means 16 returns back to feeding adjustment disk 36 always and contrary feeding usefulness inclined cam surface 29 butts of armed lever 27, the form of the reverse feeding campaign that the feeding amount equated when feeding tooth 11 had formed with described positive feeding.
Automatically be to adopt feeding tooth reversing gearbox, to 38 energisings of rotary type electromagnetic valve the time, be fixed in rotary type electromagnetic valve 38 the axle on armed lever 39 turn round, the armed lever 41 that will be fixed in operating axis 32 by connecting rod 40 is guided Fig. 1 below into, the same when reversing bar 33 with operation, the feed direction of feeding tooth 11 becomes reverse.Making in the operation of cloth 61, feeding tooth 11 and amount of movement are exactly needle gage, but in the operation that thread end is cut off, approximately are 3/4 of needle gages.
As shown in Figure 5, the time point that rotary type electromagnetic valve 38 begins to move is cutting off in the operation promptly when pin 3 is in upper/lower positions (angle of main shaft 2 is 140 °) at thread end, the revolution of main shaft feeding tooth 11 forwards is moved, from doing the cardon as can be seen of Fig. 3, pin 3 rises on needle plate 50 surfaces (top), after the position, begins the action of rotary type electromagnetic valve 38 under feeding tooth 11 arrival needle plates 50 surfaces, therefore shown in the oblique line portion of Fig. 5, the angle of main shaft 2 roughly is between 250 °～50 °.
For convenience's sake, pin 3 can be risen to and regard as on needle plate 50 surfaces (top) and rise on the cloth 61.
Among Fig. 2, thread cutting mechanism 450 comprises: but have the opening 52 that can insert feeding tooth 11, and the needle plate 50 of mounting cloth 61; The presser feet 53 that cloth 61 is pushed down; Have blade face 55, and as the dead knife 54 of fixing dead knife member; And form wired seizure with hook portion 57, and can catch member along the reciprocating line of the direction of arrow can moving knife 56, in case counter trample sole (not shown) promptly, in case the thread end that travels to cloth 61 is cut off operation, then main shaft 2 turns round driving needle 3, come the position with low speed from upper/lower positions, simultaneously trimming is with electromagnetic valve 64 energisings, but drive moving knife 56 suture cut off.Reach the standard grade 58 and roll off the production line and 59 cut off simultaneously but dead knife 54 and moving knife 56 cooperative action will capture.
The Sewing machines action of said structure is described below with reference to Fig. 1～Fig. 6.Now, suitably turn round the feeding adjustment disk 36 of horizontal direction guiding mechanism 350, adjust the reciprocating motion amount of pin 3 and feeding tooth 11 horizontal directions.Drive motors (not shown) is so that the Sewing machines action, by pin up-down mechanism 150 and pin horicontal motion mechanism 200 pin about in the of 3, horizontal direction are moved back and forth, simultaneously by feeding tooth up-down mechanism 250 and the flat motion 300 of feeding dentifrice water, make on one side feeding tooth about in the of 11, horizontal direction reciprocating motion, on one side with shuttle 4 cooperative action, on cloth 61, carry out decide the work feed action of needle gage, sew cloth 61 as shown in Figure 2.
Making when termination of cloth 61 is because of pin 3 is set at 140 ° of the angles of main shaft 2, so pin 3 shown in Figure 2 is inserted in the opening 52 of needle plate 50.Under this state, cut off operation in order to travel to trimming, the anti-sole (not shown) of trampling of operator, main shaft 2 be with the revolution of extremely slow speed, moves to 140 °～60 ° of the angles of main shaft 2, and pin 3 is moved to institute's set a distance from cloth 61.Be shuttle 4 revolution 1 circle, thread take-up tension lever (not shown) arrives the top dead-centre of movement locus, feeding tooth 11 and pin 3 formed pin 3 from cloth 61 expose, the tooth 11 of feeding simultaneously leaves away downwards and then cloth 61 moved to the arrow A direction with 3/4 of the needle gage of cloth 61 from cloth 61.Wherein, 60 ° of angles that are set at main shaft 2 are that the last position for pin 3 prevents to reach the standard grade when cutting off the cloth line end and 58 deviates from from pin 3 and then cause and can not make, so be chosen in the thread take-up tension lever top dead-centre.
During these main shaft 2 revolutions, for example when in main shaft 2 arrives 260 °, in case to 38 energisings of rotary type electromagnetic valve, then as shown in Figure 6, when pin 3 is moved upward, while reversing towards the opposite direction of arrow A direction, moves feeding tooth 11, then, feeding tooth 11 on the arrow A direction while keep that the state that is embedded under needle plate 50 horizontal planes can only mobile needle gage 3/4, but the line of moving knife 56 is caught will the reach the standard grade wire loop and 59 seizure of rolling off the production line with hook portion 57.
Then, but that moving knife 56 retreats towards the arrow A direction by the trimming cam (not shown) that is fixed in lower shaft 6 is mobile, will reach the standard grade 58 and roll off the production line and 59 cut off by the blade face 55 of dead knife 54.
Cut off in the operation at above-mentioned line, pin 3 moves to the position on the cloth 61, simultaneously feeding tooth 11 from cloth 61 leave away downwards promptly, feeding tooth 11 descends downwards above needle plate 50, driving rotational type electromagnetic valve 38 reverses feeding tooth 11 then, moves while feeding tooth 11 is kept the state that is embedded under needle plate 50 horizontal planes.At this moment, cloth 61 still by presser feet 53 and needle plate 50 clampings, does not move.Like this, feeding tooth 11 not with cloth 61 state of contact under reverse move, so can not damage cloth 61.
And, but by moving knife (line seizure member) 56 and dead knife (dead knife member) 54 line is cut off, line must be set traditional catch member so do not resemble with cutter head member body complex mechanism movably.
Claims (2)
1. Sewing machine with needle feed comprises:
Pin links with machine spindle, and makes making thing;
Needle plate, the described thing of making of mounting, and have opening;
The feeding tooth, with described pin cooperative action, and with fixed needle gage make the described thing of making, carry out described feeding of making thing while turn round in the opening of described needle plate, to reach up and down to move horizontally, it is characterized in that described Sewing machine with needle feed also comprises:
Feeding tooth reversing gearbox, in the operation that described thread end after making thing and making is cut off, be positioned under the described state of making on the thing at described pin, the position of described feeding tooth under the described needle plate face, reverse by the described revolution that makes the feeding tooth, on one side described feeding tooth is remained under the described needle plate face simultaneously not and the described thing position contacting of making, on one side with less than the distance of described needle gage to moving horizontally opposite direction and move with described;
Thread cutting mechanism after this feeding tooth reversing gearbox action, is cut off having made the described thread end of making thing.
2. Sewing machine with needle feed as claimed in claim 1 is characterized in that, but described thread cutting mechanism is by the dead knife that is fixed and catch the seizure member that described line and straight line move and constitute.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002132416 | 2002-05-08 | ||
| JP2002132416A JP4020692B2 (en) | 2002-05-08 | 2002-05-08 | Needle feed sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1456727A CN1456727A (en) | 2003-11-19 |
| CN1307335C true CN1307335C (en) | 2007-03-28 |
Family
ID=29416636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031241743A Expired - Fee Related CN1307335C (en) | 2002-05-08 | 2003-04-29 | Sewing machine with needle feed |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4020692B2 (en) |
| CN (1) | CN1307335C (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1793472B (en) * | 2004-12-22 | 2012-05-16 | 兄弟工业株式会社 | Feed regulation machine of sewing machine |
| JP2006180977A (en) * | 2004-12-27 | 2006-07-13 | Brother Ind Ltd | Adjusting mechanism for feeding of sewing machine |
| KR100597201B1 (en) * | 2005-02-25 | 2006-07-04 | 썬스타 특수정밀 주식회사 | Sequin device |
| JP2006238905A (en) * | 2005-02-28 | 2006-09-14 | Brother Ind Ltd | Sewing machine and feed adjusting mechanism of sewing machine |
| JP5925603B2 (en) * | 2012-05-31 | 2016-05-25 | Juki株式会社 | sewing machine |
| CN104120560B (en) * | 2013-04-23 | 2018-02-13 | Juki株式会社 | The control method of sewing machine |
| CN103668798A (en) * | 2013-12-19 | 2014-03-26 | 吴江市菀坪宝得利缝制设备机械厂 | Vertical feeding mechanism of sewing machine |
| CN104695140A (en) * | 2015-04-03 | 2015-06-10 | 周磊 | Sewing device |
| CN112626729A (en) * | 2019-09-24 | 2021-04-09 | 杰克缝纫机股份有限公司 | Feed lifting tooth height intelligent adjusting mechanism and sewing machine |
| US20220290346A1 (en) * | 2019-10-16 | 2022-09-15 | Honda Motor Co., Ltd. | Sewing method and device for same |
| CN111197203B (en) * | 2020-03-19 | 2021-07-30 | 杰克缝纫机股份有限公司 | Feed lifting thread trimming assembly and sewing machine with feed lifting thread trimming assembly |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4528923A (en) * | 1983-07-08 | 1985-07-16 | Pfaff Industriemaschinen Gmbh | Sewing machine having a system for approaching a predetermined end point of a seam |
| US4991080A (en) * | 1986-03-13 | 1991-02-05 | International Business Machines Corporation | Pipeline processing apparatus for executing instructions in three streams, including branch stream pre-execution processor for pre-executing conditional branch instructions |
| US5154130A (en) * | 1991-09-30 | 1992-10-13 | Leggett & Platt, Incorporated | Multi-needle double lock chain stitch tack, jump and thread trimming quilting method and apparatus |
| US5964170A (en) * | 1997-05-28 | 1999-10-12 | G.M. Pfaff Aktiengesellschaft | Sewing machine with thread-cutting device |
| US5967070A (en) * | 1997-10-22 | 1999-10-19 | G.M. Pfaff Aktiengesellschaft | Process for shortening a fabric-side hook thread end in sewing machines with thread cutting device |
| CN1056894C (en) * | 1995-09-13 | 2000-09-27 | 东海工业缝纫机株式会社 | Thread cutting device in sewing machine |
-
2002
- 2002-05-08 JP JP2002132416A patent/JP4020692B2/en not_active Expired - Fee Related
-
2003
- 2003-04-29 CN CNB031241743A patent/CN1307335C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4528923A (en) * | 1983-07-08 | 1985-07-16 | Pfaff Industriemaschinen Gmbh | Sewing machine having a system for approaching a predetermined end point of a seam |
| US4991080A (en) * | 1986-03-13 | 1991-02-05 | International Business Machines Corporation | Pipeline processing apparatus for executing instructions in three streams, including branch stream pre-execution processor for pre-executing conditional branch instructions |
| US5154130A (en) * | 1991-09-30 | 1992-10-13 | Leggett & Platt, Incorporated | Multi-needle double lock chain stitch tack, jump and thread trimming quilting method and apparatus |
| CN1056894C (en) * | 1995-09-13 | 2000-09-27 | 东海工业缝纫机株式会社 | Thread cutting device in sewing machine |
| US5964170A (en) * | 1997-05-28 | 1999-10-12 | G.M. Pfaff Aktiengesellschaft | Sewing machine with thread-cutting device |
| US5967070A (en) * | 1997-10-22 | 1999-10-19 | G.M. Pfaff Aktiengesellschaft | Process for shortening a fabric-side hook thread end in sewing machines with thread cutting device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1456727A (en) | 2003-11-19 |
| JP2003326059A (en) | 2003-11-18 |
| JP4020692B2 (en) | 2007-12-12 |
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Granted publication date: 20070328 Termination date: 20200429 |