CN85102938A - Can stitch out the family expenses flat slit serging two-purpose machine of 301 lock-type chain stitchs and 503 chain-type stitchs - Google Patents
Can stitch out the family expenses flat slit serging two-purpose machine of 301 lock-type chain stitchs and 503 chain-type stitchs Download PDFInfo
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- CN85102938A CN85102938A CN 85102938 CN85102938A CN85102938A CN 85102938 A CN85102938 A CN 85102938A CN 85102938 CN85102938 CN 85102938 CN 85102938 A CN85102938 A CN 85102938A CN 85102938 A CN85102938 A CN 85102938A
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Abstract
The sew mechanism of 301 lock-type chain stitchs and sewing mode and JA type domestic sewing machine of the two-purpose sewing machine of the present invention design is basic identical.When sewing 503 chain-type stitchs, except that the staight needle (1) that directly uses flush joint sewing usefulness, shuttle, thread take-up tension lever (30), designed looper (27), bearded needle (2), bound edge thread take-up tension lever (28) and bound edge in addition and crossed line hook (29).Straight needlework ring during over casting is enlarged by shuttle, and by shuttle, crochet hook (2), the bigger triangle of sewing (33) flare up, looper can pass from the triangle straight needlework ring reliably.The bound edge threading is all above base plate.Structure is simpler, and matching requirements are low, is easy to make, and is easy to grasp use.
Description
A kind of family expenses flush joint, bound edge two-purpose sewing machine that can stitch out 301 lock-type chain stitchs and 503 chain-type stitchs.The present invention is a kind of new design of relevant family expenses multifunctional sewing machine, and it is keeping on JA type domestic sewing machine original function and the basic basis of invariable of structure, has designed the mechanism of the 503 chain type overedge-stitch of sewing that a kind of and former sewing machine for covering chain stitch structure combines together.
Known family expenses flush joint, bound edge multifunctional sewing machine are China fleet-footed runner board JY1-1 type, peacock board multifunctional sewing machine one class type.This class multifunctional sewing machine designs on the basis at JA, JB type Sewing machines.Flush joint when sewing and JA, JB type Sewing machines are identical.Over casting adopts three-way 505 stitchings.Be 505 overedge-stitch of sewing, outside the sewing machine for covering chain stitch structure otherwise designed one cover over casting mechanism, structure is comparatively complicated.And and this class multifunctional sewing machine be in sewing during overedge-stitch, respectively colludes line spare and all be the last wire loop that directly passes with its commissure.Because wire loop is little,, correspondingly make and the matching requirements height so require height to respectively colluding cooperatively interacting of line spare.The possibility that breaks down is also bigger.The moving towards of three sutures of this class multifunctional sewing machine arranges that S-turn is many, threading is inconvenient.The differentiation of each line degree of tightness and adjust not intuitively in the stitching, the sewing operation of bound edge is difficult to be grasped.Because above defective has influenced promoting the use of of this class multifunctional sewing machine.
The objective of the invention is more easily to make in order to provide a kind of, be easy to grasp family expenses flush joint, the bound edge two-purpose sewing machine of use, moderate cost.
The Sewing machines of the present invention's design keeps the various functions of JA type domestic sewing machine based on JA type domestic sewing machine.The installation of the generation type of flush joint 301 lock-type chain stitchs, transmission mechanism and upper thread bottom line, various operation are all identical with JA type domestic sewing machine.Mix annexes such as feed cover plate, crimping presser feet, can carry out corresponding operation equally.
Flush joint and overcast conversion are controlled by a cover clutch by a knob.When knob was screwed into the flush joint position, bound edge special-purpose member and lower shaft Tuo Li And rested on the position that does not influence the flush joint sewing, and machine can be done the flush joint sewing.When carrying out over casting, knob is screwed into the bound edge position, clutch is connected bound edge special-purpose member and lower shaft motion, can carry out over casting.
503 chain-type stitchs that Sewing machines of the present invention stitches out are formed by staight needle line (32) and looper thread (34) braiding.Staight needle threading schematic diagram when accompanying drawing 4B is over casting.The upper thread of flush joint sewing is promptly made overcast staight needle line, and difference only is will to hang from bound edge thread take-up tension lever (28) to this section of staight needle pin hole staight needle line to be crossed line into bound edge and collude (29).Accompanying drawing 5 is looper threading schematic diagrames.Looper thread (34) is drawn by being contained under the base plate coil on the arm spool pin, walk around looper thread tension disk (35) after, directly penetrate the looper hole, over casting is without bottom line, but bobbin case still must be loaded onto.Presser feet (36) is custom-designedly can satisfy flush joint and overcast special-purpose presser feet simultaneously.
The over casting mechanism of the present invention design comprises that staight needle (1), staight needle line tension disk (31), feed dog, shuttle, bobbin case, thread take-up tension lever (30) and newly-designed bearded needle (2), looper (27), bound edge thread take-up tension lever (28), the bound edge of flush joint sewing usefulness cross line and collude (29), presser feet (36) and looper thread tension disk (35).The sew process of 503 chain-type stitchs of this over casting mechanism is as follows:
The axle revolution is a work period for 360 ° on the Sewing machines, in a work period, and the part of adjacent three stitchings that hocket sewing action.In the over casting process, feed dog, shuttle, staight needle (1), thread take-up tension lever (30), bearded needle (2), (27) six moving component routing motions of looper.Wherein feed dog, shuttle, staight needle (1) time matching relationship and the JA type domestic sewing machine in whole work period is identical.The motion of thread take-up tension lever (30) except that 180 ° between 230 °, change, the motion of all the other times is also identical with the relevant motion of JA type domestic sewing machine.
The motion and the mutual alignment schematic diagram of staight needle when accompanying drawing 6 is over casting (1), bearded needle (2) and looper (27).In the time of 0 °, staight needle (1) is in the extreme higher position, and this position is the starting point that staight needle moves downward; Looper (27) is stopped at the extreme higher position, has formed last looper wire loop; Bearded needle (2) is stopped at extreme higher position ， And and catches on last straight needlework ring; Last again straight needlework ring draws in, but waits to tighten up; During thread take-up tension lever (30) is in and moves upward, just choosing that part of staight needle line that last straight needlework ring is walked around bobbin case.After over casting began, staight needle moved downward.When last axle turned over about 30 °, staight needle (1) band line passed the looper wire loop.About 50 °, looper (27) begins to move downward.In the time of 60 °, thread take-up tension lever (30) moves upward to the extreme higher position.When tightening up the previous again straight needlework ring that has drawn in, pull out the required staight needle line of a back straight needlework ring from staight needle line tension disk (31).90 °～110 °, staight needle (1) thrusts sewing (38).In the time of about 100 °, bearded needle is begun to lower swing by the extreme higher position, unclamps the previous straight needlework ring that catches on.The staight needle line that unclamps is crossed line by bound edge and is colluded (29), bound edge thread take-up tension lever (28) and staight needle (1) downward movement and cooperate and draw in gradually, is tightened up by thread take-up tension lever (30) about 60 ° the time by the time next circulates.Looper (27) draws unnecessary looper thread in moving downward.Arrive extreme lower position ， And in the time of about 130 ° and be docked to about 240 °.150 °～160 °, bearded needle (2) breaks away from previous straight needlework ring.170 °～220 °, bearded needle (2) is in extreme lower position, is positioned at the about 0.5 millimeter ， And in the shuttle race side of covering and crosses (1) 0.3～0.5 millimeter of staight needle.Deng the marquis collude get by shuttle enlarged after needlework ring always.In the time of 180 °, staight needle (1) arrives minimum position And and transfers to immediately and moving upward, and forms straight needlework ring gradually.In the time of 185 °, shuttle becomes the clockwise direction rotation by counterclockwise rotating.About 210 °, promptly staight needle (1) is risen 2～2.5 millimeters the time by minimum point, and shuttle colludes into a back straight needlework ring, gradually this wire loop is enlarged.About 230 °, bearded needle (2) catch on by shuttle enlarged after the upwards swing of one side of needlework ring always.At this moment, the another side of straight needlework ring is still caught on by shuttle and continues to move clockwise, and until deviating from shuttle, walking around bobbin case, deviates from from shuttle afterbody and shuttle holder gap, and its process is identical when sewing with flush joint.In the time of about 240 °, looper (27) is begun to move upward by low spot.Tighten up last looper wire loop in moving upward, And pulls out the required looper thread of back one looper wire loop from looper thread tension disk (35).To about 260 °, looper (27) form with looper thread (34) the effect owing to shuttle, bearded needle (2) of passing a jiao in sewing (38) bottom surface, one jiao at bearded needle (2), another angle the triangle straight needlework ring in shuttle race.About 290 °, after bearded needle (2) catches on always the needlework ring arrive extreme higher position ， And and rest on the extreme higher position, up to about 100 ° of next one circulation.In the time of about 320 °, looper (27) arrives the extreme higher position, crosses about 5 millimeters of staight needle, forms a back looper wire loop, and And is docked to about 50 ° of next circulation.In the time of 330 °, thread take-up tension lever (30) arrives extreme lower position, transfers to immediately moving upward, and chooses that part of staight needle line of walking around bobbin case.In the time of 360 °, staight needle (1) arrives the extreme higher position, and feed dog begins work feed forward, so far finishes a working cycles.
The key of over casting reliability is that the shuttle point colludes reliably into straight needlework ring.For this reason, the present invention has done improvement to the thread take-up cam curve, 190 °～215 ° intervals in aforementioned working cycles, be that staight needle (1) is from minimum point rises 3 millimeters these sections, for thread take-up cam has designed one section ascending curve, making thread take-up tension lever (30) make a trace moves upward, just draw the wire loop of staight needle elongated slot one side in, guarantee that straight needlework ring only forms in short groove one side, improving reliability ， And that shuttle colludes straight needlework ring avoids producing bearded needle (2) and catches on the broken string phenomenon that the short groove side of staight needle and elongated slot side line ring cause simultaneously.
Compare with existing family expenses flush joint, bound edge multifunctional sewing machine, the present invention has following characteristics:
1. in the process that forms 503 stitchings, utilized the shuttle string-hooking mechanism of flush joint to enlarge straight needlework ring And and when enlarging straight needlework ring, staight needle line nature is to the skew of bearded needle (2) direction, colludes the reliability that line and looper are worn straight needlework ring thereby improved bearded needle.The looper transmission mechanism of the present invention's design makes looper at highs and lows the stop of enough time be arranged all, thereby has improved the reliability that staight needle is worn the looper wire loop.So the over casting performance is comparatively stable.
2. two spherical hinges transmission of being made up of ball head I (18), ball head II (8) and ball bowl (20) is concentrated in the motion of bearded needle, looper; Two power transmission shafts (7) (26) are that bearded needle, looper are shared; The needs of looper for line, take-up have just been satisfied in the design of looper movement travel amount, and the looper thread take-up mechanism need not be set, thereby have reduced part ， And compact conformation is concentrated.The bound edge running part can be used as the separate part assembly and adjustment of going ahead of the rest, and improves general assembly efficient.Because aforementioned the 1st characteristics are arranged, provide bigger convenience again, helped reducing production costs for making, assemble, debug, keeping in repair.
3. parts are not changed or are dismantled in flush joint, over casting conversion.During over casting, need only remove bottom line, staight needle line (32) be hung bound edge cross line and collude (29), pull conversion knob (33), load onto looper thread (34) and get final product.Also on base plate, threading and adjustment all make things convenient for looper confession line mechanism.
Accompanying drawing 1 is clutch and looper, bearded needle drive system structure sketch.
Accompanying drawing 2 is looper transmission schematic diagrames.
Accompanying drawing 3 is bearded needle transmission schematic diagrames.
Accompanying drawing 4A is a flush joint sewing upper thread threading schematic diagram.
Accompanying drawing 4B is an over casting staight needle line threading schematic diagram.
Accompanying drawing 5 is looper thread threading schematic diagrames.
When accompanying drawing 6 is over casting, staight needle, bearded needle, looper motion and mutual alignment schematic diagram.
The family expenses flush joint that proposes according to the present invention, bound edge two-purpose sewing machine sewing principle have proposed a kind of design.
This programme has designed flush joint, the over casting mode be made up of knob (33), clutch conversion crank (13), banking pin (14), clutch linkage (10), extension spring (12), clutch pusher dog (9), on-of pin (11), clutch key seat (17), clutch chuck (16) etc. and has changed clutch.Motion reaches looper, bearded needle transmission mechanism by lower shaft (15) through clutch chuck (16), on-of pin (11), clutch key seat (17), ball head I (18), ball bowl (20), ball head II (8).Clutch key seat (17) sky is enclosed within on the lower shaft (15), is fixed on the axial motion of back-up ring (19) on the lower shaft (15) and clutch chuck (16) restriction clutch key seat (17).Accompanying drawing 1 expression clutch is in the over casting position.During the flush joint sewing, pull knob (33) to the flush joint position, the clutch conversion crank (13) that is fixed on the rotation axis counterclockwise forwards the position that banking pin (14) limits to, under extension spring (12) elastic force effect, clutch linkage (10) moves right, drive clutch pusher dog (9) clockwise direction and rotate, the pusher dog claw is leaned against on clutch chuck (16) inclined-plane, right side.Rotary machine, lower shaft (15) and the clutch chuck (16) that is fixed on the lower shaft rotate thereupon.When the notch on the clutch chuck forwarded aligning pusher dog (9) claw to, claw pushed on-of pin (11) left in the clutch key seat (17) from clutch chuck notch rapidly under extension spring (12) elastic force effect, breaks away from clutch chuck (16).Pusher dog blocks the clutch key seat (17) that the top has notch, makes its transfixion.The corresponding extreme lower position that is parked in below the needle plate (37) of this moment bearded needle (2), looper (27) is motionless.
The sewing mechanism of present design is based on JA type domestic sewing machine.Its sewing machine for covering chain stitch structure and JA type domestic sewing machine are basic identical.During over casting, staight needle line tension disk (31), staight needle (1), thread take-up tension lever (30), shuttle, bobbin case and sewing machine for covering chain stitch structure are shared.The bound edge thread take-up tension lever (28) that designs for over casting is fixed on the shank; Bound edge is crossed line and is colluded (29) and be installed on the casing, and its setting height(from bottom) can be adjusted; Looper thread tension disk (35) was installed on line seat Zhi ， And and replaced the line seat.The reliable needs that form straight needlework ring during for the assurance over casting, the curve of thread take-up cam instead has the micro-curve that rise from minimum point to rising to 3 millimeters one section at staight needle (1), makes thread take-up tension lever (30) just draw the wire loop of staight needle elongated slot one side in.Guarantee only to form a monolateral wire loop reliably in short groove one side of staight needle.For realizing the action request of over casting working cycles, designed the transmission mechanism of control looper (27) and bearded needle (2) motion respectively to looper (27), bearded needle (2).
Accompanying drawing 3 is bearded needle transmission schematic diagrames.Bearded needle driving cam (22) is affixed with bearded needle power transmission shaft (7), and bearded needle driving cam (22) is synchronized with the movement with looper transmission fork (6).Bearded needle transmission fork (24) sky is enclosed within on the looper power transmission shaft (26).During bearded needle driving cam (22) swing, drive bearded needle transmission fork (24) swing.Bearded needle (2) is fixed on the bearded needle transmission fork (24), so make bearded needle (2) make corresponding reciprocally swinging.The contour curve of bearded needle driving cam (22) has one period time of staying when making bearded needle (2) be positioned at high putting.Bearded needle (2) is not to stop fully when being in low spot.Because lower shaft (15) pendulum angle has 208 °～214 °, when the lower shaft motion is passed to looper transmission fork (6) through ball pivot, looper transmission fork (6) is in the one-period of reciprocally swinging, wherein one or both ends include a secondary swing that the amplitude of oscillation is very little, and the bearded needle driving cam (22) of doing to be synchronized with the movement with looper transmission fork (6) includes the secondary swing equally.Regulate the phase angle of clutch chuck (16) notch and lower shaft (15), can or all be assigned to bearded needle (2) with this secondary swing part and be in the amplitude of oscillation that a Duan ， And of low spot makes the bearded needle point swing at the low spot secondary and be no more than 0.5 millimeter.This secondary swing has prolonged bearded needle (2) in the time that marquis such as low spot collude cut-off needlework ring, is equivalent to bearded needle (2) and stops at low spot.The design of this cam pendulum fork mechanism, when satisfying over casting of the present invention to the requirement of bearded needle motion.
Claims (16)
1, a kind of family expenses flush joint, bound edge two-purpose sewing machine can stitch out 301 lock-type chain stitchs, it is characterized in that the overedge-stitch that stitches out is 503 chain-type stitchs.
2,, it is characterized in that staight needle (1), upper thread tension disk (31), thread take-up tension lever (30), shuttle and the bobbin case of flush joint sewing also is used for over casting according to the said two-purpose sewing machine of claim 1.Cross line hook (29), looper thread tension disk (35) composition over casting mechanism with looper (27), bearded needle (2), bound edge thread take-up tension lever (28), bound edge, weave 503 chain-type stitchs.
3, according to claim 1,2 said two-purpose sewing machines, it is characterized in that having control looper (27) to move up and down transmission mechanism that ， And makes looper (27) stop at highs and lows.
4,, it is characterized in that having control bearded needle (2) to swing up and down ， And and make the transmission mechanism of bearded needle in high position and lower position stop according to claim 1,2 said two-purpose sewing machines.
5, according to claim 1,2 said two-purpose sewing machines, it is characterized in that bound edge thread take-up tension lever (28) is fixed on the shank, bound edge is crossed line and is colluded (29) and be installed on the casing, and bound edge is crossed line and is colluded (29) setting height(from bottom) and can adjust.
6,, it is characterized in that having a clutch to carry out flush joint, over casting conversion according to claim 1,2 said two-purpose sewing machines.
7, according to the said two-purpose sewing machine of claim 3, the transmission mechanism that it is characterized in that controlling looper (27) motion is chute rocking bar and lanar four rod mechanism.
8, according to the said two-purpose sewing machine of claim 7, the curve at chute two ends that it is characterized in that controlling the chute endplay device of looper (27) motion is two sections isocentric circular arc, the stroke of the semidiameter control looper (27) of two circular arcs.
9, according to the said two-purpose sewing machine of claim 4, the transmission mechanism that it is characterized in that controlling bearded needle (2) motion is a cam pendulum fork mechanism.
10,, it is characterized in that the transmission mechanism of controlling looper (27) motion makes looper (27) stop for 90/360 cycle at peak, stops for 110/360 cycle in minimum point according to the said two-purpose sewing machine of claim 3.
11,, it is characterized in that the chute endplay device of controlling looper (27) motion makes looper (27) stop for 90/360 cycle at peak, stops for 110/360 cycle in minimum point according to the said two-purpose sewing machine of claim 7.
12,, it is characterized in that the chute endplay device chute two ends circular curve of controlling looper (27) motion makes looper (27) stop for 90/360 cycle at peak, stops for 110/360 cycle in minimum point according to the said two-purpose sewing machine of claim 8.
13,, it is characterized in that the transmission mechanism of controlling bearded needle (2) swing makes bearded needle (2) stop for 170/360 cycle in the high position, stops for 50/360 cycle at lower position according to the said two-purpose sewing machine of claim 4.
14,, it is characterized in that the cam pendulum fork mechanism that controls bearded needle (2) motion makes bearded needle (2) stop for 170/360 cycle in the high position, stops for 50/360 cycle at lower position according to the said two-purpose sewing machine of claim 9.
15, according to claim 1,2 said two-purpose sewing machines, it is characterized in that the thread take-up cam curve satisfies staight needle and controls the wire loop that thread take-up tension lever (30) draws staight needle elongated slot one side between 3 millimeters from minimum rising to, guarantee to form monolateral wire loop in short groove one side of staight needle.
16, according to claim 1,2 said two-purpose sewing machines, stitch overedge-stitch without bottom line, it is characterized in that the upper thread of overcast staight needle line and flush joint sewing is identical for line, looper thread supplies line by the looper thread of base plate top for line mechanism above base plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85102938 CN85102938A (en) | 1985-04-16 | 1985-04-16 | Can stitch out the family expenses flat slit serging two-purpose machine of 301 lock-type chain stitchs and 503 chain-type stitchs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85102938 CN85102938A (en) | 1985-04-16 | 1985-04-16 | Can stitch out the family expenses flat slit serging two-purpose machine of 301 lock-type chain stitchs and 503 chain-type stitchs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN85102938A true CN85102938A (en) | 1986-06-10 |
Family
ID=4792872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85102938 Pending CN85102938A (en) | 1985-04-16 | 1985-04-16 | Can stitch out the family expenses flat slit serging two-purpose machine of 301 lock-type chain stitchs and 503 chain-type stitchs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85102938A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100355970C (en) * | 2004-09-07 | 2007-12-19 | 中捷缝纫机股份有限公司 | Switching device for stitch of catch-switch sewing machine |
| CN1962991B (en) * | 2006-11-17 | 2011-09-14 | 佛山市源田床具机械有限公司 | Sewing machine head swinging device of automatic edge-quilting machine |
| CN1880539B (en) * | 2005-05-06 | 2012-08-22 | 威陛马科股份公司 | Sewing machine with a base designed to hold interchangeable means |
| CN101778971B (en) * | 2007-08-08 | 2012-10-10 | 株式会社铃木制作所 | Single thread lock stitch hand stitch formation method and machine |
| CN107012595A (en) * | 2017-05-17 | 2017-08-04 | 武汉理工大学 | Composite Patches two-wire stitching devices |
-
1985
- 1985-04-16 CN CN 85102938 patent/CN85102938A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100355970C (en) * | 2004-09-07 | 2007-12-19 | 中捷缝纫机股份有限公司 | Switching device for stitch of catch-switch sewing machine |
| CN1880539B (en) * | 2005-05-06 | 2012-08-22 | 威陛马科股份公司 | Sewing machine with a base designed to hold interchangeable means |
| CN1962991B (en) * | 2006-11-17 | 2011-09-14 | 佛山市源田床具机械有限公司 | Sewing machine head swinging device of automatic edge-quilting machine |
| CN101778971B (en) * | 2007-08-08 | 2012-10-10 | 株式会社铃木制作所 | Single thread lock stitch hand stitch formation method and machine |
| CN107012595A (en) * | 2017-05-17 | 2017-08-04 | 武汉理工大学 | Composite Patches two-wire stitching devices |
| CN107012595B (en) * | 2017-05-17 | 2019-10-25 | 武汉理工大学 | Composite Patches two-wire stitching devices |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| CI01 | Correction of invention patent gazette |
Correct: Wang Chaojin|Wang Weiguo False: Wang Chaojin Number: 6 Page: 47 Volume: 2 |
|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CI01 | Correction of invention patent gazette |
Correction item: inventor Correct: Wang Weiguo False: (missing the inventor) Number: 6 Page: 47 Volume: 2 |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| ERR | Gazette correction |
Free format text: CORRECT FROM: (LEAKAGE REGISTER INVENTOR) TO: WANG WEIGUO Free format text: CORRECT FROM: WANG ZHAOJIN TO: WANG ZHAOJIN WANG WEIGUO |