CN100451207C - Link lever thread take-rp mechanism for sewing machine - Google Patents
Link lever thread take-rp mechanism for sewing machine Download PDFInfo
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- CN100451207C CN100451207C CNB021370419A CN02137041A CN100451207C CN 100451207 C CN100451207 C CN 100451207C CN B021370419 A CNB021370419 A CN B021370419A CN 02137041 A CN02137041 A CN 02137041A CN 100451207 C CN100451207 C CN 100451207C
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Abstract
The present invention discloses a connecting rod thread taking-up mechanism of a sewing machine (the connecting rod thread taking-up mechanism comprises a four-rod thread taking-up mechanism and a five-rod thread taking-up mechanism). By extending the connecting rod length 12 of a thread taking-up rod (2) and recombining other dimensions, the maximum coiling point of the thread taking-up rod (hole) is obviously higher than the maximum coiling points of the existing thread taking-up rods (holes), thereby obviously reducing the tension of the needle threads on the sewing machine, and enhancing the combination properties of the sewing machine. The connecting rod thread taking-up mechanism of the present invention can fit with 300 classes of thread hooking mechanisms with various stitches (including an oscillating shuttle, a horizontal rotating shuttle and a horizontal type rotating shuttle) and other mechanisms to constitute sewing machines with various uses.
Description
The present invention relates to make the thread take-up mechanism of 300 class chain stitch sewing machines.
The mechanism of making 300 class chain stitch sewing machines at present in the world is mainly by thorn material lead wires mechanism, string-hooking mechanism, four great institutions such as thread take-up mechanism and feed mechanism composition.Sewing machines will be finished the process of a stitching, the eedle of main spinosity material lead wires mechanism, and the shuttle of string-hooking mechanism (rotary shuttle or shuttle), four critical parts such as the feeding tooth of the thread take-up tension lever of thread take-up mechanism and feed mechanism are finished in certain sequence.The effect of the thread take-up tension lever of thread take-up mechanism (hole) is supply and reclaim an amount of needlework in the stitching forming process, and the knot that needlework and shuttle thread are formed is taken out tight in the middle of sewing and replenished the needlework that each stitching is consumed.The thread take-up mechanism of Sewing machines has the cam thread take-up mechanism, connecting rod thread take-up mechanism (the connecting rod thread take-up mechanism has four bars and five lever take-up mechanisms) ... Deng.The connecting rod thread take-up mechanism: four lever take-up mechanism (four lever take-up mechanism formal name used at school crank and rocker mechanism) is made up of four member hinges such as thread take-up crank (crank) thread take-up tension lever (connecting rod and working beam) line-choosing connecting rod (rocking bar) casing (frame) and main shaft.Five lever take-up mechanisms (can regulate five lever take-up mechanisms for the line amount) are to increase a wobble crank member hinge to form on the basis of four lever take-up mechanism, wobble crank is by the wobble crank control system that is installed on the same main shaft---and crank and rocker mechanism is handled, (crank and rocker mechanism is mainly by eccentric wheel, connecting rod, four members such as rocking bar and casing are formed.) make wobble crank make reciprocally swinging.(regulate the position of the eccentric wheel orientation angle of crank and rocker mechanism, the stroke size of the thread take-up tension lever of thread take-up mechanism is changed, become five lever take-up mechanisms that to regulate for the line amount.) because the Sewing machines use is wide, so kind is a lot of, the linear pattern Sewing machines of home-use (also being suitable for the clothes workshop) has JA type and JB type two classes.The thread take-up mechanism of JA type Sewing machines is the cam thread take-up mechanism, and the thread take-up mechanism of JB type Sewing machines is connecting rod (four a bars) thread take-up mechanism.Industrial middling speed (3000 pins/minute) and at a high speed the exhausted most kind of thread take-up mechanism of (the highest 6000 pins/minute) sewing machine for covering chain stitch be to select connecting rod (four bars) thread take-up mechanism for use.The cam thread take-up mechanism only is applicable to low-speed running.Connecting rod (four bars) thread take-up mechanism can be applicable to basic, normal, high speed running.The thread take-up tension lever operating position of above-mentioned two kinds of thread take-up mechanisms is relatively: thread take-up tension lever (hole) the take-up peak position of the cam thread take-up mechanism of JA type Sewing machines in thread take-up tension lever (hole) the take-up peak position of the connecting rod thread take-up mechanism of 58 ° of (is 0 ° with the eedle peak) JB type Sewing machiness at 67 °.The two is compared, the thread take-up tension lever of connecting rod thread take-up mechanism (hole) is than slow 9 ° of thread take-up tension lever (hole) the take-up peak position of cam thread take-up mechanism, be slow 9 ° of take-up time, its consequence is that the needlework tension force of its needlework tension force of the slow Sewing machines of the take-up Sewing machines faster than take-up is big.(the needlework tension force of Sewing machines is good with " little ".) so JA type Sewing machines be subjected to the user and welcome.Because middling speed, high speed parallel sewing machine are to adopt connecting rod (four bars) thread take-up mechanism, therefore also have thread take-up tension lever (hole) problem of take-up time " slowly ".The four lever take-up mechanism of a ZL99113582.2 use in sewing machine reaches and has surpassed 58 ° of thread take-up tension lever (hole) the take-up peak positions of cam thread take-up mechanism, because the length l of line-choosing connecting rod
3Choose than life size and can reach 58 ° of above-mentioned peak positions in short-term.The length of connecting rod l of thread take-up tension lever in the connecting rod thread take-up mechanism
2=25 ± 0.1 (selecting from Chinese industry standard ZBY17034-90, GC15 type high speed parallel sewing machine thread take-up tension lever); l
2=24.8 ± 0.10 (selecting from Chinese industry standard ZBY17033-90, domestic sewing machine JB type thread take-up tension lever); l
2=25 ± 0.05 (selecting from the connecting rod take-up thread take-up tension lever of the industrial standard JIS B9083-1971 of Japan industrial sewing machines); l
2=28 (longest dimensions that the four lever take-up mechanism of a ZL99113582.2 use in sewing machine, its technical scheme example are selected for use).Connecting rod l by above-mentioned thread take-up tension lever
2Also there are some problems in actual applications in the high speed sewing machine of size composition.
The connecting rod thread take-up mechanism that the purpose of this invention is to provide a kind of use in sewing machine, it can make thread take-up tension lever (hole), and the peak position than thread take-up tension lever (hole) take-up of prior art has significantly " soon " in the peak position of take-up, overcomes ZL99113582.2 and has problems applying on the high speed sewing machine.
The object of the present invention is achieved like this: the technical program is that each scantling in the connecting rod thread take-up mechanism of prior art is transformed.The connecting rod thread take-up mechanism comprises four lever take-up mechanism and five lever take-up mechanisms.Four lever take-up mechanism comprises thread take-up crank (1), thread take-up tension lever (2), line-choosing connecting rod (3), casing (4), the wherein length l of thread take-up crank (1) OA
1With thread take-up crank OA and needle bar crank OA
1Angle δ
1, the connecting rod AB length l of thread take-up tension lever (2)
2With working beam BP (crosspointer is BP and BQ with two holes) length l
2 (2)And the angle δ of connecting rod and working beam
2, the connecting rod BC length l of line-choosing connecting rod (3)
3, the coordinate l of the axis hole position C of casing (4) the line-choosing connecting rod fulcrum axis hole position D of wobble crank (in five lever take-up mechanisms)
ol
0 (2)(four member hinges such as the initial point " 0 " of the coordinate XY of the axis hole position of main shaft and main shaft (7) are formed; Five lever take-up mechanisms are to have increased its CD length l of a wobble crank (5) on the basis of four lever take-up mechanism
5The member hinge form, wobble crank is by the wobble crank control system that is installed on the same main shaft---crank and rocker mechanism is handled.(crank and rocker mechanism is mainly by thread take up lever stroke regulating wheel (eccentric wheel), connecting rod, and four members such as rocking bar and casing are formed.) size of each member of connecting rod thread take-up mechanism is transformed; The main points of its transformation are with the connecting rod AB length l in the thread take-up tension lever
2=28.2～45mm; (the length of connecting rod l of ZBY17034-90 China industry standard GC15 type high speed parallel sewing machine thread take-up tension lever
2=25 ± 0.1mm.) (the length of connecting rod l of JIS B9038 Japan standard thread take-up tension lever
2=25 ± 0.05mm.) and adjustment that the size of other member do is calculated, make it meet in the scope of " thread take up lever stroke " regulation or reach better " thread take up lever stroke ".Above-mentioned improved connecting rod thread take-up mechanism is the technical program.The technical program can supportingly be used for high speed sewing machine, also can supportingly be used for the Sewing machines of middling speed, each kind of low speed.Thread take-up tension lever (hole) than the Sewing machines of prior art has significantly " soon " in the peak position of take-up in the peak position of take-up with the thread take-up tension lever (hole) of the supporting Sewing machines of the technical program.The needlework tension force of Sewing machines can be reduced, also created the time conditions that can shift to an earlier date feeding simultaneously for feed mechanism; Owing to can shift to an earlier date feeding, i.e. feeding in advance finishes, and has played variation on the function of mechanism, and can have ready conditions reduces needle bar stroke, perhaps can increase the thick ability of seam under existing needle bar stroke condition.Therefore to have needlework tension force little with the supporting Sewing machines of the technical program, and feeding is refreshing, increases advantages such as the thick ability of seam, has improved the combination property level of Sewing machines.
The present invention is further described below in conjunction with drawings and Examples:
Fig. 1 is the mechanism principle and thread take-up tension lever (P) the movement locus figure of connecting rod (four bars) thread take-up mechanism.
Fig. 2 is the mechanism principle and thread take-up tension lever (P) the movement locus figure of connecting rod (five bars) thread take-up mechanism.
Fig. 3 is thread take-up tension lever (single needle use in sewing machine) structural representation.
Fig. 4 is thread take-up tension lever (two-needle sewing machine an is used) structural representation.
Fig. 5 is connecting rod of the present invention (four a bars) thread take-up mechanism structural representation.
Fig. 6 is that the A of Fig. 5 is to view.
Fig. 7 is connecting rod of the present invention (five a bars) thread take-up mechanism structural representation.
Fig. 8 is that the A of Fig. 7 is to view.
1. thread take-up cranks, 2. thread take-up tension levers, 3. line-choosing connecting rods, 4. casings, 5. wobble crank 5-1. line-choosing connecting rod double-headed shaft, 6. axle sleeves, 7. main shafts, 8. needle bar cranks, 9. needle bearings, 10. not-go-end screw 10-1. line-choosing connecting rod baffle plates, 11. wobble crank axle sleeves, 12. rocking bars, 13. link pins, 14. connecting rods, 15. needle bearings, 16. thread take up lever stroke regulating wheels, 17. thread take up lever stroke mark seats among the figure
In Fig. 1, this figure is the mechanism principle and thread take-up tension lever (P) the movement locus figure of connecting rod (four bars) thread take-up mechanism.Thread take-up crank (1) (formal name used at school: the length of OA crank), code name l
1Thread take-up tension lever (2) it by connecting rod AB length, code name l
2With working beam BP (crosspointer with two hole BP and BQ) length, code name l
2 (2)And the angle ∠ ABP of connecting rod and working beam, code name δ
2Form Deng three parts, P is the working hole of thread take-up tension lever; Line-choosing connecting rod (3) (formal name used at school: rocking bar) CB length, code name l
3Casing (4) (formal name used at school: frame) coordinate, the code name l of the axis hole position C of the fulcrum of line-choosing connecting rod (3)
0l
0 (2), the 0th, center, axis hole position its coordinate XY of main shaft is " 0 "; AA
1Be that needle bar crank (8), its active length are OA
1, δ
1Be thread take-up crank (1) OA and needle bar crank OA
1Between angle; Thread take up lever stroke is distance, its code name ∑ PY of thread take-up tension lever hole (P) from lowest point to the peak position.
In Fig. 2, this figure is the mechanism principle and thread take-up tension lever (P) the movement locus figure of connecting rod (five bars) thread take-up mechanism.The length of thread take-up crank (1) OA, code name l
1Thread take-up tension lever (2) it by connecting rod AB length, code name l
2With working beam BP (crosspointer with two hole BP and BQ) length, code name l
2 (2)And angle ∠ ABP, the code name δ of connecting rod and working beam
2Form Deng three parts, P is the working hole of thread take-up tension lever; Line-choosing connecting rod (3) CB length, code name l
3Wobble crank (5) CD length, code name l
5Coordinate, the code name l of the axis hole position D of casing (4) wobble crank
0l
0 (2), the 0th, center, axis hole position its coordinate XY of main shaft is " 0 "; AA
1Be that needle bar crank (8), its active length are OA
1, δ
1Be thread take-up crank (1) OA and needle bar crank OA
1Between angle; Thread take up lever stroke is distance, its code name ∑ PY of thread take-up tension lever hole (P) from lowest point to the peak position.
In Fig. 3, this figure is thread take-up tension lever (single needle use in sewing machine) structural representation.Thread take-up tension lever is by connecting rod AB length, code name l
2With working beam BP length, code name l
2 (2)And angle ∠ ABP, the code name δ of connecting rod and working beam
2.
In Fig. 4, this figure is thread take-up tension lever (two-needle sewing machine with) structural representation.Thread take-up tension lever is by connecting rod AB length, code name l
2With working beam BP, BQ length, code name l
2 (2) Pl
2 (2) QAnd angle ∠ ABP, the code name δ of connecting rod and working beam
2P, ∠ ABQ code name δ
2Q
In Fig. 5,6, this figure is connecting rod of the present invention (four a bars) thread take-up mechanism structural representation.Thread take-up crank (1) is installed in main shaft (7) and upward fixes with dog screw and trip bolt, main shaft is in axle sleeve (6), axle sleeve is installed in the casing (4), the rear end axle of needle bar crank (8) is fixed in the axis hole of thread take-up crank (1), it stretches out partly and is the axle journal of thread take-up crank, and the tie rod holes A of thread take-up tension lever (2) is equipped with needle bearing (9) and is installed on the axle journal of thread take-up crank.The rear axle of line-choosing connecting rod double-headed shaft (5-1) is fixed on the casing (4), and front axle and line-choosing connecting rod (3) axis hole C be hinge mutually, and the end of front axle is fastening with not-go-end screw (10), prevents line-choosing connecting rod (3) axial displacement.The connecting rod B hole of the B axle of line-choosing connecting rod (3) and thread take-up tension lever (2) is hinge mutually.Thread take-up tension lever (2) P hole is the single needle use in sewing machine, and thread take-up tension lever (2) P, two holes of Q are that two-needle sewing machine is used.
In Fig. 7,8, this figure is connecting rod of the present invention (five a bars) thread take-up mechanism structural representation.Thread take-up crank (1) is installed in main shaft (7) and upward fixes with dog screw and trip bolt, main shaft is in axle sleeve (6), axle sleeve is installed in the casing (4), the rear end axle of needle bar crank (8) is fixed in the axis hole of thread take-up crank (1), it stretches out partly and is the axle journal of thread take-up crank, and the tie rod holes A of thread take-up tension lever (2) is equipped with needle bearing (9) and is installed on the axle journal of thread take-up crank.The D axle of wobble crank (5) is in axle sleeve (11), and axle sleeve (11) is fixed in the casing (4), and the C hole of the C axle of wobble crank (5) and line-choosing connecting rod (3) is hinge mutually, and the connecting rod B hole of the B axle of line-choosing connecting rod (3) and thread take-up tension lever (2) is hinge mutually.Line-choosing connecting rod baffle plate (10-1) is fastening by screw, prevent line-choosing connecting rod (3) axial displacement.Rocking bar (12) is installed on the axle afterbody of wobble crank (5) by screw location and fastening.Thread take up lever stroke regulating wheel (16) and thread take up lever stroke mark seat (17) are installed on the main shaft (7).Needle bearing (15) is housed in the macropore of connecting rod (14) to be installed on the thread take up lever stroke regulating wheel (16), the thread take up lever stroke regulating wheel is equipped with back-up ring on (16), block needle bearing (15) axial displacement in the running, the aperture of connecting rod (14) and link pin (13) be hinge and be installed in rocking bar (12) and go up and fixed by screws clamp mutually.Thread take-up tension lever (2) P hole is the single needle use in sewing machine, and thread take-up tension lever (2) P, two holes of Q are that two-needle sewing machine is used.The characteristics of this connecting rod (five bars) thread take-up mechanism are to regulate the relative angle of thread take up lever stroke regulating wheel (16) and thread take up lever stroke mark seat (17), can change thread take up lever stroke ∑ PY ∑ PQ size.Be " a kind of five lever take-up mechanisms of the confession regulated line amount of use in sewing machine " ZL94112046.5.
The technical program can be applicable in the Sewing machines of 300 class stitchings, and is because the kind of such Sewing machines is a lot of, existing representational kind: 1. typical species such as thick material flat seam machine 3. two-needle sewing machines compares and uses in the high speed parallel sewing machine 2. big rotating shuttles.
High speed parallel sewing machine is by the perpendicular insertion material, and connecting rod (four bars) thread take-up mechanism take-up, rotary shuttle collude line, form the Sewing machines of 301 stitchings, are the main sewing devices of clothes factory.Below with the structure of connecting rod (four bars) thread take-up mechanism of the high speed parallel sewing machine of prior art and technical parameter with result of calculation with connecting rod (four bars) thread take-up mechanism of the high speed parallel sewing machine of the technical program and the connecting rod AB length in technical parameter, the particularly thread take-up tension lever, code name l
2Size compared with result of calculation from nine embodiment examples such as nine size compositions such as 28.2 30 32 34 36 38 40 42 45 grades.
The connecting rod of the high speed parallel sewing machine of prior art (four bars) thread take-up mechanism numbering 1-0 unit: mm " as follows "
Technical parameter: l
0=18.4 l
0 (2)=26.74 l
1=14.5 l
2=25 l
2 (2)=35.7 l
3=29.3 δ
1=27.87 ° of δ
2=122 ° are calculated.(starting point of this calculating is taken at thread take-up crank (1) and vertical direction angle δ
1The angle place is θ
1=0 ° this moment eedle be in the extreme higher position.) " as follows "
Result of calculation:
Thread take-up tension lever (P) peak θ
1=69 ° of PX 39.614 PY 54.977
Thread take-up tension lever (P) minimum point θ
1=303 ° of PX 38.583 PY-4.51
Thread take-up tension lever (P) stroke ∑ PY 59.487mm.
The connecting rod of the high speed parallel sewing machine of the technical program (four bars) thread take-up mechanism numbering 1-1
Technical parameter: l
0=11.5 l
0 (2)=27.77 l
1=14.5 l
2=28.2 l
2 (2)=35.7 l
3=26 δ
1=27.87 ° of δ
2=122 ° are calculated.
Result of calculation:
Thread take-up tension lever (P) peak θ
1=66 ° of PX 43.703 PY 55.327
Thread take-up tension lever (P) minimum point θ
1=304 ° of PX 41.298 PY-4.155
Thread take-up tension lever (P) stroke ∑ PY 59.482mm.
The connecting rod of the high speed parallel sewing machine of the technical program (four bars) thread take-up mechanism numbering 1-2
Technical parameter: l
0=9.8 l
0 (2)=28.52 l
1=14.5 l
2=30 l
2 (2)=35.7 l
3=26 δ
1=27.87 ° of δ
2=122 ° are calculated.
Result of calculation:
Thread take-up tension lever (P) peak θ
1=65 ° of PX 45.431 PY 55.879
Thread take-up tension lever (P) minimum point θ
1=303 ° of PX 42.878 PY-3.601
Thread take-up tension lever (P) stroke ∑ PY 59.48mm.
The connecting rod of the high speed parallel sewing machine of the technical program (four bars) thread take-up mechanism numbering 1-3
Technical parameter: l
0=8 l
0 (2)=29.4 l
1=14.5 l
2=32 l
2 (2)=35.7 l
3=26 δ
1=27.87 ° of δ
2=122 ° are calculated.
Result of calculation:
Thread take-up tension lever (P) peak θ
1=64 ° of PX 47.067 PY 56.717
Thread take-up tension lever (P) minimum point θ
1=302 ° of PX 44.654 PY-2.756
Thread take-up tension lever (P) stroke ∑ PY 59.473mm.
The connecting rod of the high speed parallel sewing machine of the technical program (four bars) thread take-up mechanism numbering 1-4
Technical parameter: l
0=6.5 l
0 (2)=30.29 l
1=14.5 l
2=34 l
2 (2)=35.7 l
3=26 δ
1=27.87 ° of δ
2=122 ° are calculated.
Result of calculation:
Thread take-up tension lever (P) peak θ
1=63 ° of PX 48.071 PY 58.103
Thread take-up tension lever (P) minimum point θ
1=300 ° of PX 46.449 PY-1.373
Thread take-up tension lever (P) stroke ∑ PY 59.476mm.
The connecting rod of the high speed parallel sewing machine of the technical program (four bars) thread take-up mechanism numbering 1-5
Technical parameter: l
0=5 l
0 (2)=31.26 l
1=14.5 l
2=36 l
2 (2)=35.7 l
3=26 δ
1=27.87 ° of δ
2=122 ° are calculated.
Result of calculation:
Thread take-up tension lever (P) peak θ
1=62 ° of PX 49.018 PY 59.554
Thread take-up tension lever (P) minimum point θ
1=300 ° of PX 48.218 PY 0.057
Thread take-up tension lever (P) stroke ∑ PY 59.497mm.
The connecting rod of the high speed parallel sewing machine of the technical program (four bars) thread take-up mechanism numbering l-6
Technical parameter: l
0=3 l
0 (2)=32.37 l
1=14.5 l
2=38 l
2 (2)=35.7 l
3=26 δ
1=27.87 ° of δ
2=122 ° are calculated.
Result of calculation:
Thread take-up tension lever (P) peak θ
1=61 ° of PX 50.835 PY 60.256
Thread take-up tension lever (P) minimum point θ
1=299 ° of PX 49.97 PY 0.77
Thread take-up tension lever (P) stroke ∑ PY 59.486mm.
The connecting rod of the high speed parallel sewing machine of the technical program (four bars) thread take-up mechanism numbering l-7
Technical parameter: l
0=1.6 l
0 (2)=33.47 l
1=14.5 l
2=40 l
2 (2)=35.7 l
3=26 δ
1=27.87 ° of δ
2=122 ° are calculated.
Result of calculation:
Thread take-up tension lever (P) peak θ
1=60 ° of PX 51.557 PY 61.933
Thread take-up tension lever (P) minimum point θ
1=298 ° of PX 51.697 PY 2.442
Thread take-up tension lever (P) stroke ∑ PY 59.491mm.
The connecting rod of the high speed parallel sewing machine of the technical program (four bars) thread take-up mechanism numbering l-8
Technical parameter: l
0=0 l
0 (2)=34.65 l
1=14.5 l
2=42 l
2 (2)=35.7 l
3=26 δ
1=27.87 ° of δ
2=122 ° are calculated.
Result of calculation:
Thread take-up tension lever (P) peak θ
1=59 ° of PX 52.63 PY 63.309
Thread take-up tension lever (P) minimum point θ
1=297 ° of PX 53.406 PY 3.839
Thread take-up tension lever (P) stroke ∑ PY 59.47mm.
The connecting rod of the high speed parallel sewing machine of the technical program (four bars) thread take-up mechanism numbering l-9
Technical parameter: l
0=-2.5 l
0 (2)=36.48 l
1=14.5 l
2=45 l
2 (2)=35.7 l
3=26 δ
1=27.87 ° of δ
2=122 ° are calculated.
Result of calculation:
Thread take-up tension lever (P) peak θ
1=58 ° of PX 54.395 PY 65.286
Thread take-up tension lever (P) minimum point θ
1=296 ° of PX 55.954 PY 5.80l
Thread take-up tension lever (P) stroke ∑ PY 59.485mm.
The peak position of thread take-up tension lever (P) take-up of high speed parallel sewing machine connecting rod (four bars) thread take-up mechanism that from above-mentioned numbering 1-0 is prior art is at 69 °; Connecting rod AB length l in the thread take-up tension lever has been set forth among nine embodiment of the connecting rod of the high speed parallel sewing machine of the technical program (four bars) thread take-up mechanism in numbering l-l～9th
2The result of calculation of size in each example of 28.2 30 32 34 36 38 40 4245,63 ° of its thread take-up tension lever (P) take-up extreme higher position (1-1) 66 ° (1-2) 65 ° (l-3) 64 ° (1-4), (1-5) 62 ° of (1-6) 61 ° of (1-7) 60 ° of (1-8) 59 ° of (1-9) 58 °.From above-mentioned nine embodiments exception, also available different size is formed various embodiment examples, for example: select l
3=24, l
2 (2)=36 form numbering 1-10, perhaps select l
3Forming another embodiment with other member with different size reaches and meets better practicing.
The connecting rod of the high speed parallel sewing machine of the technical program (four bars) thread take-up mechanism numbering 1-10
Technical parameter: l
0=2.8 l
0 (2)=31.4 l
1=14.5 l
2=36 l
2 (2)=35.7 l
3=24 δ
1=27.87 ° of δ
2=122 ° are calculated.
Result of calculation:
Thread take-up tension lever (P) peak θ
1=60 ° of PX 48.425 PY 59.976
Thread take-up tension lever (P) minimum point θ
1=301 ° of PX 48.231 PY 0.502
Thread take-up tension lever (P) stroke ∑ PY 59.474mm.
The derivatives that thick material flat seam machine is a medium speed flat bed sewing machine in the big rotating shuttle, its main feature is: the bobbin thread amount in the big rotating shuttle is a times of common rotating shuttle line amount.Below structure and the technical parameter with connecting rod (four bars) thread take-up mechanism of thick material flat seam machine in the big rotating shuttle of prior art compared with result of calculation with connecting rod (four bars) thread take-up mechanism of result of calculation and the technical program, the structure and the technical parameter of connecting rod (five bars) thread take-up mechanism " a kind of five lever take-up mechanisms of the confession regulated line amount of use in sewing machine ".
The connecting rod of thick material flat seam machine (four bars) thread take-up mechanism numbering 2-0 in the big rotating shuttle of prior art
Technical parameter: l
0=19 l
0 (2)=26.3 l
1=15 l
2=25 l
2 (2)=45.5 l
3=28.9 δ
1=27.21 ° of δ
2=124.436 ° are calculated.
Result of calculation:
Thread take-up tension lever (P) peak θ
1=69 ° of PX 43.74 PY 64.503
Thread take-up tension lever (P) minimum point θ
1=304 ° of PX 47.618 PY-6.817
Thread take-up tension lever (P) stroke ∑ PY 71.32mm.
The connecting rod of thick material flat seam machine (four bars) thread take-up mechanism numbering 2-1 in the big rotating shuttle of the technical program
Technical parameter: l
0=4.7 l
0 (2)=29.55 l
1=15 l
2=33 l
2 (2)=45.5 l
3=22.8 δ
1=27.21 ° of δ
2=124.436 ° are calculated.
Result of calculation:
Thread take-up tension lever (P) peak θ
1=58 ° of PX 51.632 PY 66.98
Thread take-up tension lever (P) minimum point θ
1=306 ° of PX 54.554 PY-4.344
Thread take-up tension lever (P) stroke ∑ PY 71.324mm.
The connecting rod of thick material flat seam machine (five bars) thread take-up mechanism numbering 2-2 in the big rotating shuttle of the technical program
Technical parameter: l
0=9 l
0 (2)=36 l
1=15 l
2=30 l
2 (2)=45.5 l
3=22.8 l
5=8.5 δ
1=27.21 ° of δ
2=133 ° are calculated.
Result of calculation:
-4 ° [on the transformation angle position of thread take up lever stroke regulating wheel (16).]
Thread take-up tension lever (P) peak θ
1=58 ° of PX 49.231 PY 68.613
Thread take-up tension lever (P) minimum point θ
1=308 ° of PX 54.557 PY-2.738
Thread take-up tension lever (P) stroke ∑ PY 71.351mm.
-40 ° [on the transformation angle position of thread take up lever stroke regulating wheel (16).]
Thread take-up tension lever (P) peak θ
1=58 ° of PX 47.354 PY 69.971
Thread take-up tension lever (P) minimum point θ
1=309 ° of PX 54.446 PY-4.04
Thread take-up tension lever (P) stroke ∑ PY 74.011mm.
12 ° [on the transformation angle position of thread take up lever stroke regulating wheel (16).]
Thread take-up tension lever (P) peak θ
1=58 ° of PX 50.42 PY 67.706
Thread take-up tension lever (P) minimum point θ
1=308 ° of PX 54.593 PY-2.264
Thread take-up tension lever (P) stroke ∑ PY 69.97mm.
Connecting rod (five bars) thread take-up mechanism i.e. " a kind of five lever take-up mechanisms of the confession regulated line amount of use in sewing machine " is characterized in the thickness difference of thread take up lever stroke according to sewing thickness, and the thick thread take-up tension lever that needs can be smaller for the line amount for big, the thin thread take-up tension lever of line amount.The thread take up lever stroke regulating wheel (16) of this thread take-up mechanism is thread take-up tension lever (P) stroke ∑ PY 69.97mm in the time of 12 °, thread take-up tension lever (P) stroke ∑ PY 74.011mm in the time of-40 °.In 12 °～-40 ° scope, can steplessly select, as selecting-4 ° [on the transformation angle position of thread take up lever stroke regulating wheel (16).] its thread take-up tension lever (P) stroke ∑ PY 71.351mm.
From above-mentioned numbering 2-0 and 2-1, the result of calculation of 2-2 shows: the peak position of thread take-up tension lever (P) take-up of connecting rod (four bars) thread take-up mechanism of thick material flat seam machine is at 69 ° in the big rotating shuttle of numbering 2-0 prior art, the peak position of thread take-up tension lever (P) take-up of connecting rod (four bars) thread take-up mechanism of thick material flat seam machine is at 58 ° in the big rotating shuttle of numbering 2-1 the technical program, and the position of the peak of thread take-up tension lever (P) take-up of connecting rod (five bars) thread take-up mechanism of thick material flat seam machine is at 58 ° in the big rotating shuttle of numbering 2-2 the technical program.
Two-needle sewing machine is by two pieces of eedles and two Sewing machiness that horizontal rotary hook is formed, and its thread take-up tension lever has two holes, and two needlework pass two holes respectively, carry out sewing operation.The connecting rod of two-needle sewing machine (four bars) thread take-up mechanism duplicates in the connecting rod of flat seam machine (four bars) thread take-up mechanism.Below compared with result of calculation with the structure of two-needle sewing machine connecting rod (four bars) thread take-up mechanism of prior art and technical parameter two-needle sewing machine connecting rod (four bars) thread take-up mechanism and technical parameter with result of calculation and the technical program.
The connecting rod of the two-needle sewing machine of prior art (four bars) thread take-up mechanism numbering 3-0
Technical parameter: l
0=16.2 l
0 (2)=28.3 l
1=14.2 l
2=25 l
2 (2) P=39 l
2 (2) Q=39 l
3=28.9 δ
1=16.99 ° of δ
2P=129.48 ° of δ
2Q=121.39 ° are calculated.
Result of calculation:
Thread take-up tension lever (P) peak θ
1=63 ° of PX 43.518 PY 57.579
Thread take-up tension lever (P) minimum point θ
1=297 ° of PX 43.974 PY-2.703
Thread take-up tension lever (P) stroke ∑ PY 60.282mm.
Thread take-up tension lever (Q) peak θ
1=65 ° of QX 46.294 QY 52.91
Thread take-up tension lever (Q) minimum point θ
1=296 ° of QX 41.351 QY-7.539
Thread take-up tension lever (Q) stroke ∑ QY 60.449mm.
The connecting rod of the two-needle sewing machine of the technical program (four bar bars) thread take-up mechanism numbering 3-1
Technical parameter: l
0=-1 l
0 (2)=31 l
1=14.2 l
2=35 l
2 (2) P=37.9 l
2 (2) Q=38.4 l
3=22 δ
1=22.5 ° of δ
2P=129.48 ° of δ
2Q=121.39 ° are calculated.
Result of calculation:
Thread take-up tension lever (P) peak θ
1=57 ° of PX 52.429 PY 60.467
Thread take-up tension lever (P) minimum point θ
1=304 ° of PX 51.973 PY 0.199
Thread take-up tension lever (P) stroke ∑ PY 60.268mm.
Thread take-up tension lever (Q) peak θ
1=58 ° of QX 54.755 QY 55.566
Thread take-up tension lever (Q) minimum point θ
1=303 ° of QX 49.65 QY-4.694
Thread take-up tension lever (Q) stroke ∑ QY 60.26mm.
The connecting rod of the two-needle sewing machine of the technical program (five bars) thread take-up mechanism numbering 3-2
Technical parameter: l
0=5 l
0 (2)=37.5 l
1=14.5 l
2=33 l
2 (2) P=33 l
2 (2) Q=33.15 l
3=22.8l
5=8.5 δ
1=30 ° of δ
2P=129.48 ° of δ
2Q=121.39 ° are calculated.
Result of calculation:
-35 ° [on the transformation angle position of thread take up lever stroke regulating wheel (16).]
Thread take-up tension lever (P) peak θ
1=57 ° of PX 41.187 PY 61.555
Thread take-up tension lever (P) minimum point θ
1=304 ° of PX 45.224 PY 1.291
Thread take-up tension lever (P) stroke ∑ PY 60.264mm.
Thread take-up tension lever (Q) peak θ
1=58 ° of QX 43.395 QY 57.4
Thread take-up tension lever (Q) minimum point θ
1=303 ° of QX 43.091 QY-2.865
Thread take-up tension lever (Q) stroke ∑ QY 60.265mm.
-49 ° [on the transformation angle position of thread take up lever stroke regulating wheel (16).]
Thread take-up tension lever (P) peak θ
1=57 ° of PX 40.768 PY 61.85
Thread take-up tension lever (P) minimum point θ
1=305 ° of PX 45.243 PY 0.824
Thread take-up tension lever (P) stroke ∑ PY 61.026mm.
Thread take-up tension lever (Q) peak θ
1=58 ° of QX 43.001 QY 57.719
Thread take-up tension lever (Q) minimum point θ
1=304 ° of QX 43.059 QY-3.306
Thread take-up tension lever (Q) stroke ∑ QY 61.025mm.
10 ° [on the transformation angle position of thread take up lever stroke regulating wheel (16).]
Thread take-up tension lever (P) peak θ
1=57 ° of PX 43.698 PY 59.667
Thread take-up tension lever (P) minimum point θ
1=303 ° of PX 45.179 PY 2.665
Thread take-up tension lever (P) stroke ∑ PY 57.002mm.
Thread take-up tension lever (Q) peak θ
1=58 ° of QX 45.696 QY 55.407
Thread take-up tension lever (Q) minimum point θ
1=302 ° of QX 43.157 QY-1.546
Thread take-up tension lever (Q) stroke ∑ QY 56.953mm.
Connecting rod (five bars) thread take-up mechanism i.e. " a kind of five lever take-up mechanisms of the confession regulated line amount of use in sewing machine " is characterized in the thickness difference of thread take up lever stroke according to sewing thickness, and the thick thread take-up tension lever that needs can be smaller for the line amount for big, the thin thread take-up tension lever of line amount.The thread take up lever stroke regulating wheel (16) of this thread take-up mechanism is thread take-up tension lever (P) stroke ∑ PY 57.002mm in the time of 10 °, thread take-up tension lever (Q) stroke ∑ QY56.953mm; Thread take-up tension lever (P) stroke ∑ PY 61.026mm thread take-up tension lever (Q) stroke ∑ QY61.025mm in the time of-49 °; In 10 °～-49 ° scope, can steplessly select, as selecting-35 ° [on the transformation angle position of thread take up lever stroke regulating wheel (16).] its thread take-up tension lever (P) stroke ∑ PY 60.264mm, thread take-up tension lever (Q) stroke ∑ QY60.265mm.
Show from the result of calculation of above-mentioned numbering 3-0 and 3-1～2: the peak position of first hole of thread take-up tension lever (P) take-up of two-needle sewing machine connecting rod (four bars) thread take-up mechanism of numbering 3-0 prior art is at 63 °, and the peak position of second hole of thread take-up tension lever (Q) take-up is at 65 °.The peak position of first hole of thread take-up tension lever (P) take-up of two-needle sewing machine connecting rod (four, the five bars) thread take-up mechanism of numbering 3-1～2 the technical program is at 57 °, and the peak position of second hole of thread take-up tension lever (Q) take-up is at 58 °.
Show from the analysis comparative result of above-mentioned three typical species Sewing machiness:
The Sewing machines that the connecting rod thread take-up mechanism of prior art and string-hooking mechanism are formed is (1-0) high-speed sewing (sewing) machine, (2-0) thick material flush joint (sewing) machine in the big rotating shuttle, (3-0) three typical species such as two-needle sewing machine, connecting rod AB length l in the thread take-up tension lever in their the connecting rod thread take-up mechanism
2Size be 25mm.
The Sewing machines that the connecting rod thread take-up mechanism of the technical program and string-hooking mechanism are formed is (1-1～10) high-speed sewings (sewing) machines, connecting rod AB length l in their thread take-up tension lever
2Size be 28.2～45mm altogether example ten embodiment examples.In (2-1～2) big rotating shuttle in the connecting rod thread take-up mechanism of thick material flush joint (sewing) machine, example connecting rod (four bars) thread take-up mechanism and two embodiment examples of connecting rod (five bars) thread take-up mechanism " a kind of five lever take-up mechanisms of the confession regulated line amount of use in sewing machine ", connecting rod AB length l in its thread take-up tension lever
2Size be 33 and 30mm.In the connecting rod thread take-up mechanism of (3-1～2) two-needle sewing machine, example connecting rod (four bars) thread take-up mechanism and two embodiment examples of connecting rod (five bars) thread take-up mechanism " a kind of five lever take-up mechanisms of the confession regulated line amount of use in sewing machine ", connecting rod AB length l in its thread take-up tension lever
2Size be 35 and 33mm.Except the embodiment of above-mentioned three typical species, can also work out the connecting rod thread take-up mechanism (the connecting rod thread take-up mechanism comprises four lever take-up mechanism and five lever take-up mechanisms " a kind of five lever take-up mechanisms of the confession regulated line amount of use in sewing machine ") of the technical program and the string-hooking mechanism of various 300 class stitchings without departing from the spirit and scope of the present invention and (comprise shuttle, horizontal rotary hook, horizontal rotary shuttle.) match, and the example of the various uses of other mechanism's composition.
Above-mentioned 300 class stitchings meet the stitching pattern of GB4514-84 " classification of stitching and term " regulation.
Claims (1)
1. the four lever take-up mechanism of connecting rod thread take-up mechanism of making a kind of use in sewing machine of 300 class stitchings comprises thread take-up crank (1), thread take-up tension lever (2), line-choosing connecting rod (3), casing (4), the wherein length l of thread take-up crank (1) OA
1With thread take-up crank OA and needle bar crank OA
1Angle δ
1, the connecting rod AB length l of thread take-up tension lever (2)
2With working beam BP length l
2 (2)And the angle δ of connecting rod and working beam
2, the connecting rod BC length l of line-choosing connecting rod (3)
3, the coordinate l of the axis hole position C of casing (4) line-choosing connecting rod fulcrum
0l
0 (2)Form on four member hinges and main shaft (7), it is characterized in that the connecting rod AB length l of thread take-up tension lever (2)
2=28.2～45mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021370419A CN100451207C (en) | 2002-09-19 | 2002-09-19 | Link lever thread take-rp mechanism for sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021370419A CN100451207C (en) | 2002-09-19 | 2002-09-19 | Link lever thread take-rp mechanism for sewing machine |
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|---|---|
| CN1483883A CN1483883A (en) | 2004-03-24 |
| CN100451207C true CN100451207C (en) | 2009-01-14 |
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|---|---|---|---|
| CNB021370419A Expired - Fee Related CN100451207C (en) | 2002-09-19 | 2002-09-19 | Link lever thread take-rp mechanism for sewing machine |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006061225A (en) * | 2004-08-25 | 2006-03-09 | Brother Ind Ltd | Rotating thread take-up device for sewing machine |
| JP2007097811A (en) * | 2005-10-04 | 2007-04-19 | Brother Ind Ltd | Link thread take-up mechanism of sewing machine |
| CN103556408B (en) * | 2013-10-29 | 2016-06-22 | 阮孟定 | A kind of accessaries of sewing machine actuating device |
| CN103696157A (en) * | 2013-12-19 | 2014-04-02 | 吴江市菀坪宝得利缝制设备机械厂 | Cycloid mechanism of design and color zigzag sewing machine |
| CN104695144A (en) * | 2015-03-27 | 2015-06-10 | 江苏万工科技集团有限公司 | Six-rod take-up mechanism with balanced take-up and pay-off function |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1233680A (en) * | 1998-04-08 | 1999-11-03 | 周鹤鸣 | Four lever take-up mechanism for sewing machine |
| CN2388214Y (en) * | 1998-04-08 | 2000-07-19 | 蒋凤英 | Four-lever take-up mechanism for sewing machine |
-
2002
- 2002-09-19 CN CNB021370419A patent/CN100451207C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1233680A (en) * | 1998-04-08 | 1999-11-03 | 周鹤鸣 | Four lever take-up mechanism for sewing machine |
| CN2388214Y (en) * | 1998-04-08 | 2000-07-19 | 蒋凤英 | Four-lever take-up mechanism for sewing machine |
| CN1094534C (en) * | 1998-04-08 | 2002-11-20 | 周鹤鸣 | Four lever take-up mechanism for sewing machine |
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