CN1455042A - Needle-thread guiding out device of sewing machine - Google Patents
Needle-thread guiding out device of sewing machine Download PDFInfo
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- CN1455042A CN1455042A CN 03130778 CN03130778A CN1455042A CN 1455042 A CN1455042 A CN 1455042A CN 03130778 CN03130778 CN 03130778 CN 03130778 A CN03130778 A CN 03130778A CN 1455042 A CN1455042 A CN 1455042A
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- needlework
- leadout hole
- shank
- needle
- sewing machines
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- 238000009958 sewing Methods 0.000 title claims abstract description 70
- 238000005452 bending Methods 0.000 claims abstract description 5
- 238000010417 needlework Methods 0.000 claims description 325
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- 238000009795 derivation Methods 0.000 claims description 16
- 230000015572 biosynthetic process Effects 0.000 claims description 15
- 238000005086 pumping Methods 0.000 claims description 6
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- 239000004744 fabric Substances 0.000 abstract description 53
- 210000001724 microfibril Anatomy 0.000 abstract 1
- 229920001410 Microfiber Polymers 0.000 description 13
- 239000003658 microfiber Substances 0.000 description 13
- 230000007423 decrease Effects 0.000 description 8
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- 230000001788 irregular Effects 0.000 description 3
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- 238000004519 manufacturing process Methods 0.000 description 2
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- NRTLIYOWLVMQBO-UHFFFAOYSA-N 5-chloro-1,3-dimethyl-N-(1,1,3-trimethyl-1,3-dihydro-2-benzofuran-4-yl)pyrazole-4-carboxamide Chemical compound C=12C(C)OC(C)(C)C2=CC=CC=1NC(=O)C=1C(C)=NN(C)C=1Cl NRTLIYOWLVMQBO-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
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- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 239000010687 lubricating oil Substances 0.000 description 1
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Abstract
The invention relates to a needle-thread guiding out device of sewing machine for guiding out the needle-thread by the adjusting needle-thread device towards the dropping guide of the needle, controlled by the guiding out of the needle-thread supplied via fixing the needle path, the needle-thread guiding out device is provided with a needle-thread guiding part having a third needle-thread guiding hole which guides out the needle-thread portion to the lower by the state of V-shaped bending, in which the needle-thread portion is between a first needle-thread guiding out hole formed on the front end of the movable needle-thread guiding component for shaking reciprocally on the vertical direction and a second needle-thread guiding out hole formed in the general middle along the length direction, thereby it goes without saying general raw fabric, even the raw fabric twined by microfibril with softness and elasticity as the sewing object can properly control the guiding out amount, without resulting in bad sewing and half moon-shaped intumesce and so on reducing qualities, thereby performing the good sewing.
Description
[technical field]
The present invention relates to mainly be used in the needlework let-off gear(stand) (heming with invisible stitches the リ device) of spininess flat lock-stitch machine.In detail, relate to have needlework let-off gear(stand): on cardinal principle centre position about the Sewing machines arm according to following such Sewing machines that constitutes, move with step Even but be provided with pumping of the shank that is supported on the left part of this Sewing machines arm above-below direction reciprocating motion ground, movable needlework at the reciprocal swing movement of above-below direction are derived member, derive the reciprocal swing movement of member by movable needlework, to from yarn changing device (Si tune device) derive the needlework of supplying with by fixation needlework road (heming with invisible stitches リ goes out) back and derive control, towards the pin that is installed in the shank lower end guiding that descends.
[background technology]
In the needlework let-off gear(stand) of this Sewing machines, no matter making the rugosity of needlework of the thickness of grey cloth and use and elasticity etc., can both to keep common good accent seam (seam ぃ tune) be important, be to have following formation generally always: establish movable needlework and derive the amount of swing movement up and down reciprocatingly (stroke) of member or the changeable mechanism of the line hole upper-lower position in this amount of exercise and fixation needlework road as the method that solves, according to thickness of making grey cloth etc., upper-lower position by above-mentioned stroke of this changeable mechanism alter operation or line hole, with increase and decrease needlework feed path length, the derived quantity of control needlework.
In addition, in above-mentioned needlework let-off gear(stand) always, no matter make the variation of the kind, elasticity etc. of the thickness of grey cloth and needlework, it is normally suitable to adjust the needlework derived quantity by changeable mechanism, can keep good line transfer (Si tune), transfer seam, even with organize harder and common general grey cloth that elasticity is also low when making object, also can obtain the final good sewings that needlework did not relax, had the suitable degree of tying tight.
But, many as microfiber is knitted ground, to organize grey cloth that unusual softness and whippy material constitute when making object with what change tendency by having in recent years, if use above-mentioned needlework let-off gear(stand) always in the same old way, then the sewing stitch that forms owing to needlework and looper line (Le-パ Si) with unflagging tension is difficult to extract from hook on the hook of needle plate, not only grey cloth is sent the generation obstacle to and is caused poor stitching quality, even the supposition stitch can be extracted from hook, also will present following phenomenon: when pin connects grey cloth arrival lower dead center, the needlework that are in tension are pressed into grey cloth downwards, pin under this state by lower dead center when top dead centre rises, needlework and insert logical and the looper line in last needlework ring makes the pin of grey cloth connect part to reduce, thereby the grey cloth part at the place of making is tied tight too doughtily, the grey cloth part first quarter moon shape protuberance at place appears making in the result, and the problem that sewing quality descends takes place.
That is to say, has the changeable mechanism of needlework let-off gear(stand) always, after all, with usually general grey cloth when making object, only can keep line transfer, transfer the derived quantity that to adjust needlework in the scope of stitching, so control range by the needlework derived quantity of its decision, just not the scope of the sewing quality decline that causes by poor stitching quality as described above and first quarter moon shape protuberance that can fully avoid knitting with above-mentioned microfiber that ground etc. organizes like that very soft and grey cloth that whippy material constitutes generates when making object, thereby just can not avoid the reduction of the sewing quality of first quarter moon shape protuberance etc.
[summary of the invention]
In view of above-mentioned truth, the object of the present invention is to provide a kind of needlework let-off gear(stand) of Sewing machines, it is characterized in that, not only can have the suitable degree of tying tight when making object with usually general grey cloth, even with knit as microfiber organize very soft the ground and whippy material grey cloth when making object, can line transfer be remained do not take place the irregular appropriate conditions of sewing according to one side, one side does not result from grey cloth and sends into the poor stitching quality of obstacle and result from the decline of the sewing quality of too tying tight and like that suitably control the derived quantity of needlework yet.
For reaching above-mentioned purpose, the needlework let-off gear(stand) of the Sewing machines of the 1st invention of the present invention is characterised in that, but with the reciprocating motion of shank above-below direction be supported in the left part the Sewing machines arm about substantially on the front face in centre position, if it is moving and derive member at the movable needlework of the reciprocal swing movement of above-below direction with the Tong Bu Even that pumps of shank, derive the leading section of member and the cardinal principle pars intermedia of length direction at these movable needlework, the needlework that formation will derive and supply with by fixation needlework road from yarn changing device are towards the pin that is installed in the shank lower end descend the 1st needlework leadout hole and the 2nd needlework leadout hole of guiding, in the needlework let-off gear(stand) of above-mentioned Sewing machines, derive between the 1st needlework leadout hole and the 2nd needlework leadout hole of member at above-mentioned movable needlework, establish to have and to derive the needlework guide part of the 3rd needlework leadout hole of guiding through the needlework part of this two needlework leadout hole with the state of bending downwards.
Needlework let-off gear(stand) according to the Sewing machines of the present invention that above-mentioned feature is arranged, make the needlework of supplying with by fixation needlework road in turn by deriving the 1st to the 3rd needlework leadout hole that forms on the member at movable needlework, towards pin decline guiding, make by this by these movable needlework derive member the 1st to the 3rd needlework leadout hole the total length of needlework part of process elongated, and because of in the needlework way partly of this length, being bent downwardly, thereby one side makes the derivation frictional resistance of giving needlework by yarn changing device remain on line transfer, and irregular appropriate value does not take place, one side when movable needlework derivation member by the top downwards during swing movement, can make the needlework of the frictional resistance given of opposing yarn changing device derive the power grow, make the needlework derived quantity big more more gradually more downwards.By this, on the one hand with organize harder and common general grey cloth that elasticity is low when making object, yes uses by adjusting the needlework derived quantity with always same changeable mechanism, and the suitable degree of tying tight that keeps needlework not relax is made like that according to regulation; Even another side with by knit as microfiber organize the ground very soft and grey cloth that whippy material constitutes when making object, pin connect grey cloth when arriving lower dead center the needlework part and pin by lower dead center when top dead centre rises, can make the needlework part be kept a spot of lax, thereby the stitch on the hook that is wound on needle plate when sending grey cloth to can be extracted from hook smoothly not hale tight state; When connecting grey cloth from the top with hour hands, needlework are pressed into the grey cloth part of perforation place downwards, pin by the below of grey cloth when top dead centre rises, just do not have needlework and the looper line on needlework to make the pin of grey cloth connect part decline and too tying tight of causing, thereby the place of making of grey cloth just can avoid the reduction of sewing qualities such as half moon protuberance.
And, according to the present invention, for from usually general grey cloth to by the grey cloth of knitting the different broad range of grey cloth character that very softness the ground and whippy material constitute as microfiber, can prove effective, can both obtain high-quality sewings usually.
Here, the 3rd needlework leadout hole as above-mentioned needlework guide part, as long as can make through the part of the needlework between the 1st needlework leadout hole and the 2nd needlework leadout hole crooked downwards, but particularly as described in the 2nd invention of the present invention, most preferably through the needlework between the 1st needlework leadout hole and the 2nd needlework leadout hole parts according to downwards with about substantially the state of the V-shape bending of symmetry derive guiding and constitute like that.
In addition, in the needlework let-off gear(stand) of the Sewing machines of the present invention of above-mentioned formation, establish needlework guide part by deriving on the member with the 3rd needlework leadout hole at movable needlework, because of guaranteeing that the control range of needlework derived quantity is big, and then can guarantee control range with the derived quantity of its equal size, institute so that shank be projected into than the upper wall portions of Sewing machines arm top and there is no need to establish the needlework road more in the upper end of the shank of giving prominence to.Have in mind thus, as described in the 3rd invention of the present invention, can adopt the scope of pumping with shank to be set in not such formation in the outstanding upward scope of the upper wall portion of Sewing machines arm, owing to adopt such formation, seeking shank contraction in lengthization and light-weighted while, the high speed made can also be easily realized, and, the intrusion of leakage of oil and dust can also be sought to prevent because of the closure of Sewing machines arm.
But, though the needlework road needn't be established in the upper end at shank, but as described in the 4th invention of the present invention, the scope that moves up and down of shank also can be set at the shank ascending motion to the state of top dead centre, the upper end of shank is from the outstanding upward scope of the upper wall portion of Sewing machines arm.At this moment, can will enter from the upper end of shank along with the frictional heat of making for a long time the atmosphere and performance heat release function, thereby prevent that because of shank and pin abnormal high temperature the heat in the Sewing machines arm is stagnated the generation of making the uncomfortable situation of operation that causes.
In addition, in the needlework let-off gear(stand) of the Sewing machines of the present invention of above-mentioned formation, as described in the 5th invention of the present invention, preferably above-mentioned movable needlework are derived the needlework guide part on the member, according to such easy on and off ground, position of the 3rd needlework leadout hole that can up-down adjustment forms changing the fixed position and constitute thereon.At this moment, when the upper-lower position of change needlework guide part, the control range of the derived quantity of the swing movement up and down reciprocatingly of following movable needlework derivation member is further increased.
In addition, in the needlework let-off gear(stand) of the Sewing machines of the present invention of above-mentioned formation, as described in the 6th invention of the present invention, above-mentioned movable needlework are derived member according to following such range of movement that fluctuates of setting: when shank is in lower dead center, by the 1st needlework leadout hole through the needlework length of the 2nd and the 3rd needlework leadout hole till the pin of shank lower end, when being in top dead centre than shank, longer by the 1st needlework leadout hole through the needlework length between the 2nd and the 3rd needlework leadout hole is till the pin of shank lower end, thereby, with by knit as microfiber organize the ground very soft and grey cloth that whippy material constitutes when making object, do not adjust the derived quantity of needlework even utilize changeable mechanism, also can make pin connect grey cloth when arriving lower dead center the needlework part and pin by the needlework part of lower dead center when top dead centre rises, do not haled tight and kept lax, stitch when grey cloth is sent to extracting smoothly from hook carried out, do not have too tying tight of needlework and looper line simultaneously, thereby just can positively avoid the place of making of grey cloth the reduction of sewing quality of the grade of half moon protuberance to occur.
In addition, in the needlework let-off gear(stand) of the Sewing machines of the present invention of above-mentioned formation, as described in the 7th invention of the present invention, derive the 1st needlework leadout hole and the pin of member front end through above-mentioned movable needlework or be fixed on the sewing machine arm left part up and down substantially the needlework in centre position derive in the way of the needlework feed path between the guiding and establish the needlework supporting member on the position, because this needlework supporting member is only under the state that movable needlework derivation member shakes downwards, the needlework that the ability frame is lived between the 1st needlework leadout hole and the 3rd needlework leadout hole partly make it be crooked upward posture, so near the lax surplus of the needlework in the time of can making pin be in the lower dead center is bigger, thereby, can further positively prevent the reduction of sewing quality to knit soft and whippy grey cloth the ground as microfiber when making object.
Here, as described in the 8th invention of the present invention, preferred pin line bearing spare has can change the formation of fixed position up and down.Because it is fixing that the upper-lower position of such needlework supporting member can change, thus the lax surplus of needlework can be increased and decreased by adjusting the crooked upward length of needlework part, thus can seek the further raising of sewing quality.
In addition, as described in the 9th invention of the present invention, when establishing needlework supporting member as described above, make this needlework support have in many needlework part the step that the ability frame is lived on the position that Zao side that enters the needlework ring is also high than looper, even thereby there are differences entering in the timing of looper with respect to many needlework rings, the lax surplus of many needlework parts in the time of also can making movable needlework derivation member reach down position keeps impartial substantially, when the grey cloth of making as microfiber is knitted ground of parenchima, just can prevent positively that from there is the reduction of sewing quality of the grade of half moon protuberance at the place of making.
[the description of the drawings]
Fig. 1 is to use the whole front elevation of 3 pin flat lock-stitch machines of the present invention.
Fig. 2 is the oblique view of formation of the major part of the needlework let-off gear(stand) of expression in the above-mentioned 3 pin flat lock-stitch machines.
Fig. 3 is the front elevation that the main position of Fig. 2 enlarges.
Fig. 4 is the left surface figure that the main position of needlework supporting member enlarges.
Fig. 5 is that movable needlework are derived the front elevation that member is in the state of lifting position (top dead centre) in the above-mentioned 3 pin flat lock-stitch machines.
Fig. 6 is that movable needlework derivation member shakes to the front elevation of the state of down position (lower dead center) in the above-mentioned 3 pin flat lock-stitch machines.
Fig. 7 is that the movable needlework during needleless line bearing spare are derived the front elevation that member is in the state of lifting position (top dead centre) in the above-mentioned 3 pin flat lock-stitch machines.
Fig. 8 is that the movable needlework during needleless line bearing spare are derived member and shaken to the front elevation of the state of down position (lower dead center) in the above-mentioned 3 pin flat lock-stitch machines.
Fig. 9 is when the present invention proposes, the applicant with the flat lock-stitch machine real machine of trial-production be object, supply with when top dead centre is measured in explanation and during lower dead center about the front elevation of the major part that locates of needlework length of 2 pins.
[specific embodiment]
It is that oblique view, Fig. 3 of formation of the major part of the needlework let-off gear(stand) of expression in the above-mentioned 3 pin flat lock-stitch machines is the front elevation that the main position of Fig. 2 enlarges that Fig. 1 is to use whole front elevation, Fig. 2 of 3 pin flat lock-stitch machines of the present invention.In these each figure, the 1st, the Sewing machines arm, the 2nd, the Sewing machines base plate, supporting in the left part of Sewing machines arm 1 by known crank mechanism with insert logical driving main shaft (the omitting diagram) Even that is supported in this Sewing machines arm 1 in move, can be at the reciprocating shank 3 of above-below direction, establish grey cloth screw-down (, omitting detailed explanation) with these shank 3 adjacency simultaneously because of known.
By pin folder 43 pins 5 are installed in the bottom of above-mentioned shank 3, though simultaneously the scope of pumping of this shank 3 be set in 3 ascending motions of this shank to the state of top dead centre, its upper end is also from the upper wall portion 1A of the left part of Sewing machines arm 1 in the outstanding upward scope.In addition, take in the parts (, omitting detailed explanation) of the sewing that constitutes needle plate and looper and grey cloth feed mechanism etc. because of known in the left part of Sewing machines base plate 2.
The front face in cardinal principle centre position about above-mentioned Sewing machines arm 1, if movable needlework are derived member 8, these movable needlework are derived member 8, derive pumping synchronously of platform 7 and shank 3 by the positive and negative driving rotational that derives axle 6 with the moving needlework of above-mentioned driving Zhu Zhou Even by needlework, deriving the reciprocal swing movement of above-below direction (arrow u-d direction) that axle 6 is a fulcrum with these needlework.The front face of Sewing machines arm 1 of deriving the right side of member 8 at these movable needlework disposes: by give in 3 needlework 9 and 1 looper line 10 derive guiding with 4 yarn changing devices 11 of deriving frictional resistance, can adjust line tension respectively 4 lines, make 3 needlework 9 with Set Status by and on the needlework feeding means 12 of coating lubricating oil one the fixation needlework road 13 of these needlework 9 is installed; With make by 3 needlework 9 behind this fixation needlework road 13, with can insert respectively logical state, Ding on the drawing lines installing rack 14 that Even establishes with fixation needlework road 13 Gu, by slotted hole 15 and screw 16, can on above-below direction (arrow u1-d1 direction), freely change 3 variable needlework roads 17 that the fixed position constitutes respectively.
Derive preceding (left side) end of member 8 and the cardinal principle pars intermedia of length direction at above-mentioned movable needlework, make 3 needlework 9 deriving and pass through fixation needlework road 13 and variable needlework road 17 supply orientations by yarn changing device 11, by the left part of Sewing machines arm 1 up and down substantially on the centre position fixing needlework derive the needlework hole 18a that forms on the guiding 18, the the 1st and the 2nd per 3 needlework leadout hole 8A and 8B to 3 pins, 5 decline guiding, on the sustained height position, form side by side respectively, simultaneously, Yi Ti Even establishes needlework guide part 8a on the part of the movable needlework derivation member 8 between the 1st needlework leadout hole 8A and the 2nd needlework leadout hole 8B, this needlework guide part 8a makes through this two needlework leadout hole 8A, needlework part 9a between the 8B with about downwards substantially the state of the V-shape bending of symmetry derive the 3rd needlework leadout hole 8C among 3 of guiding and stagger upper-lower position and form.
In addition, needlework supporting member 19 is as shown in Figure 2 established in position in the way of the needlework feed path between the needlework hole 18a of the 1st needlework leadout hole 8A that derives member 8 front ends through above-mentioned movable needlework and needlework derivation guiding 18.This needlework supporting member 19 has 3 19a of line bearing portion, the 19a of this line bearing portion only derives under the member state that (d direction) shakes downwards at above-mentioned movable needlework, and 3 needlework part 9b that the ability frame is lived between the 1st needlework leadout hole 8A and the 3rd needlework leadout hole 8C make it be crooked upward respectively posture.In addition, this needlework supporting member 19 has by slotted hole 20 on the upper part of deriving guiding 18 at needlework and screw 21 and can change the fixedly formation of upper-lower position.In addition, express as Fig. 4,3 19a of line bearing portion of this needlework supporting member 19, during according to looper to the needlework ring enter the earliest right side for the highest, middle, left side reduce in turn such step install and form.
Use has 3 pin flat lock-stitch machines of the needlework let-off gear(stand) of above-mentioned formation, at first the occasion of making general usually grey cloth is described.This occasion makes variable needlework road 17 (u1-d1 direction) on above-below direction carry out the position adjustment according to the rugosity of the thickness of making grey cloth and needlework 9, elasticity etc. in advance, is suitable such length of adjusting the needlework feed path according to the derived quantity that makes 3 needlework 9.The length of the needlework feed path the when length of the needlework feed path when promptly rising to top dead centre according to shank 3 and shank 3 drop to lower dead center equates to adjust like that substantially.
Use by adjusting like this, make by yarn changing device 11 produce derivation frictional resistance can keep suitable line transfer and adjust the back like that and derive 3 needlework, 9 orders of guiding and pass through: the 2nd needlework leadout hole 8B → the 3rd needlework leadout hole 8C → the 1st needlework leadout hole 8A → needlework that fixation needlework road 13 → variable needlework road 17 → movable needlework are derived member 8 are derived the needlework hole 18a of guiding 18 and are descended respectively and be directed to 3 pins 5.
At this state lower needle bar 3 and pin 5 up and down reciprocatingly during actuation movement, synchronous with it movable needlework derive member 8 with needlework derive axle 6 as the center at the reciprocal swing movement of above-below direction (arrow u-d direction), keep the line transfer that produces by yarn changing device 11 on one side well and transfer seam, like that suitably control the derived quantity of needlework 9 with excessive tensions according to not applying to relax on one side to 3 needlework 9, be regardless of thickness of making grey cloth etc., all can make according to the rules.
Then, to describing as the occasion of making object to knit the grey cloth of organizing very soft and whippy material to constitute the ground as microfiber.Under this occasion, the needlework of supplying with by fixation needlework road 13 and variable needlework road 17 9, by the 2nd needlework leadout hole 8B, the 3rd needlework leadout hole 8C and the 1st needlework leadout hole 8A of formation on movable needlework derivation member 8, the needlework hole 18a decline of deriving guiding 18 through needlework is directed to pin 5 in turn.Because it is elongated in the total length that these movable needlework are derived needlework 9 parts that have on the member, and be bent downwardly with cardinal principle V font by the 3rd needlework leadout hole 8C in the way of needlework 9 parts of this length, so can make the derivation frictional resistance of giving needlework 9 by yarn changing device 11 keep the line transfer situation and the irregular appropriate value of not sewing, in addition, when deriving member 8 by lifting position shown in Figure 5 during to down position swing movement shown in Figure 6 with the moving and movable needlework of the decline Yi Dong Even of shank 3 and pin 5, by following 3 points, the below is big more gradually more can to make the needlework derived quantity: (1) is derived the 1st needlework leadout hole 8A of member 8 front ends to movable needlework by variable needle track 17 distance L becomes big in the below more more gradually, (2) needlework that change the derivation frictional resistance that the posture opposing given by yarn changing device 11 downwards to the needlework part 9a of the 3rd needlework leadout hole 8C order by the 2nd needlework leadout hole 8B are derived power f below grow more gradually more, and (3) derive member 8 when shaking than still less top position of the down position of Fig. 6 at movable needlework, needlework part 9b between the 3rd needlework leadout hole 8C and the 1st needlework leadout hole 8A is lived by the 19a of the line bearing portion frame of needlework supporting member 19, along with movable needlework are derived the needlework part 9b that is lived by frame when member 8 shakes the down position of Fig. 6 by this state and are varied to crooked upward posture, thereby the needlework of the derivation frictional resistance that opposing is produced by yarn changing device 11 are derived power f and are further strengthened.
The below is big more gradually more to derive the derived quantity of the needlework 9 that member 8 produces by so movable needlework, even thereby with by knit as microfiber organize the ground very soft and grey cloth that whippy material constitutes when making object, pin 5 connects needlework part and pin 5 the needlework part when by lower dead center rising to top dead centre of grey cloths when arriving lower dead center can keep a spot of lax not haled under the tight situation, the stitch that is wound on when grey cloth is sent on the hook of needle plate can be extracted from hook smoothly, connect the grey cloth part that grey cloth hour hands alignment below is pressed into perforation from the top with hour hands 5, the leave behind pin of grey cloth of needlework and the looper line on the needlework connected part when perhaps pin 5 was risen by the below of grey cloth, just can too not tie tight yet, thereby just can avoid the place of making of grey cloth that the reduction of sewing quality of the grade of half moon protuberance is arranged.
In addition, 3 19a of line bearing portion of set needlework supporting member 19 on the position in the way of the needlework feed path between the needlework hole 18a of the 1st needlework leadout hole 8A that derives member 8 front ends through above-mentioned movable needlework and needlework derivation guiding 18, express as Fig. 4, according to right side the side the earliest that enters of needlework ring (during the looper to) for the highest, middle, the left side reduces such step in turn and installs and form, even thereby the timing that enters of the looper of 3 needlework rings that form with respect to grey cloth below the left side ring is late more more, the lax surplus of 3 needlework 9 in the time of also can making movable needlework derive member 8 arrival down positions keeps impartial substantially, thereby when the grey cloth of making as microfiber is knitted ground of parenchima, just can prevent really that from there is the reduction of sewing quality of the grade of half moon protuberance at the place of making.
In addition, in the above-described embodiment, though be illustrated to establishing needlework supporting member 19, but as shown in Figures 7 and 8, even in not establishing 3 pin flat lock-stitch machines of needlework supporting member 19, by the effect of above-mentioned (1), (2), the derived quantity that also can make movable needlework derive the needlework that member 8 shakes more downwards becomes greatly more gradually, thus just can prevent to make as microfiber knit the grey cloth of parenchima the time the reduction of sewing quality.
By the way, when motion of the present invention, the inventor has obtained result such shown in table 1 and the table 2, promptly 3 pin flat lock-stitch machine real machines with the applicant's trial-production are object, respectively under the occasion of occasion that the needlework supporting member is arranged and needleless line bearing spare, measure the result of the needlework length B of 2 pins about supplying with when the needlework length A of 2 pins about supplying with when shank is in top dead centre and shank are in lower dead center.
In addition, as shown in Figure 9, each needlework length A and B will form between each needlework road of needlework feed path and 6 values that 1.～6. a size that locates adds up between the needlework leadout hole etc.The unit of the numerical value in the table 1,2 is mm in addition.
Table 1 (occasion that the needlework supporting member is arranged)
| Locate | ??① | ??② | ??③ | ??④ | ??⑤ | ??⑥ | ??A |
| Left side needlework | ??18 | ??55 | ??25 | ??24 | ??80 | ??125 | ??327 |
| Right needlework | ??26 | ??44 | ??25 | ??23 | ??75 | ??120 | ??313 |
| Locate | ??① | ??② | ??③ | ??④ | ??⑤ | ??⑥ | ??B |
| Left side needlework | ??18 | ??73 | ??36 | ??30 | ??36 | ??158 | ??351 |
| Right needlework | ??25 | ??67 | ??36 | ??29 | ??39 | ??152 | ??348 |
Table 2 (occasion of needleless line bearing spare)
| The shank top dead centre | Locate | ??① | ??② | ??③ | ??④ | ??⑤ | ??⑥ | ??A |
| Left side needlework | ??18 | ??54 | ??36 | ??25 | ??83 | ??125 | ??341 | |
| Right needlework | ??25 | ??44 | ??36 | ??25 | ??79 | ??120 | ??329 | |
| The shank lower dead center | Locate | ??① | ??② | ??③ | ??④ | ??⑤ | ??⑥ | ??B |
| Left side needlework | ??18 | ??75 | ??37 | ??25 | ??37 | ??155 | ??347 | |
| Right needlework | ??26 | ??65 | ??39 | ??25 | ??38 | ??160 | ??353 |
Obviously find out by the size that above-mentioned table 1 and table 2 are measured, in the occasion that the needlework supporting member is arranged, ratio (the A: B) of the needlework length B of 2 pins about supplying with when the needlework length A of 2 pins and shank are in lower dead center about supplying with when shank is in top dead centre, left side needlework are 1.00: 1.07, right needlework are 1.00: 1.11, in addition, ratio (the A: B) of the occasion of needleless line bearing spare, left side needlework are 1.00: 1.02, right needlework are 1.00: 1.07, no matter in any occasion, all big and exist lax about the needlework derived quantity when shank is in lower dead center.Thereby, even when the soft and limber grey cloth of making as microfiber is knitted ground, half moon protuberance does not take place yet, can access the good sewings of final mass at the place of making.Particularly, in the occasion that the needlework supporting member is arranged, can obtain big lax surplus and obtain higher-quality sewings.
In addition, in the above-described embodiment,, need not say also to be used in double-thread overlock sewing machine though be illustrated to being used in spininess flat lock-stitch machines such as 3 pins.
In addition, preferably make the needlework guide part 8a that derives the 3rd needlework leadout hole 8C that has on the member 8 at movable needlework, can represent like that, freely change the position on the fixing above-below direction and constitute with respect to movable needlework derivation member 8 according to Fig. 3 arrow u2-d2.Under this occasion, by the upper-lower position of change needlework guide part 8a, position that can up-down adjustment the 3rd needlework leadout hole 8C further increases the control range of derived quantity of following movable needlework to derive the swing movement up and down reciprocatingly of member.
Claims (9)
1. the needlework let-off gear(stand) of Sewing machines, it is characterized in that, but with the reciprocating motion of shank above-below direction be supported in the left part the Sewing machines arm about substantially on the front face in centre position, if it is moving and derive member at the movable needlework of the reciprocal swing movement of above-below direction with the Tong Bu Even that pumps of shank
Be to derive the leading section of member and the cardinal principle pars intermedia of length direction at these movable needlework, formation makes the needlework of deriving and pass through the supply of fixation needlework road from yarn changing device, towards the descend needlework let-off gear(stand) of Sewing machines of the 1st needlework leadout hole of guiding and the 2nd needlework leadout hole of the pin that is installed in the shank lower end, in the needlework let-off gear(stand) of this Sewing machines
Between above-mentioned movable needlework are derived the 1st needlework leadout hole and the 2nd needlework leadout hole in the member, establish to have and make the needlework part that remains on this two needlework leadout hole derive the needlework guide part of the 3rd needlework leadout hole of guiding downwards with crooked state.
2. the needlework let-off gear(stand) of Sewing machines according to claim 1, it is characterized in that, the 3rd needlework leadout hole of above-mentioned needlework guide part, according to make through the needlework between the 1st needlework leadout hole and the 2nd needlework leadout hole parts downwards with about substantially the state of the V-shape bending of symmetry derive guiding and constitute like that.
3. the needlework let-off gear(stand) of Sewing machines according to claim 1, it is characterized in that, the scope of pumping of above-mentioned shank is set at: though in the shank ascending motion to the state of top dead centre, the upper end of shank is not also in the outstanding upward scope of the upper wall portion of Sewing machines arm.
4. the needlework let-off gear(stand) of Sewing machines according to claim 1, it is characterized in that, the scope of pumping of above-mentioned shank is set at: to the state of top dead centre, the upper end of shank is in the outstanding upward scope of the upper wall portion of Sewing machines arm in the shank ascending motion.
5. the needlework let-off gear(stand) of Sewing machines according to claim 1, it is characterized in that, above-mentioned movable needlework are derived the needlework guide part on the member, can the such easy on and off of up-down adjustment ground change the fixed position and constitute according to the position of the 3rd needlework leadout hole that forms thereon.
6. the needlework let-off gear(stand) of Sewing machines according to claim 1, it is characterized in that, above-mentioned movable needlework are derived member according to following such range of movement that fluctuates of setting: when shank is in lower dead center by the 1st needlework leadout hole through the needlework length of the 2nd and the 3rd needlework leadout hole till the pin of shank lower end, longer through the needlework length between the 2nd and the 3rd needlework leadout hole is till the pin of shank lower end when being in top dead centre by the 1st needlework leadout hole than shank.
7. the needlework let-off gear(stand) of Sewing machines according to claim 1, it is characterized in that, above-mentioned movable needlework derive the 1st needlework leadout hole and the pin of member front end or be fixed on the sewing machine arm left part up and down substantially the needlework on the centre position derive position in the way of the needlework feed path that keeps between the guiding, if needlework supporting member, only under the state that movable needlework derivation member shakes downwards, just frame is lived the crooked upward posture of needlework part between the 1st needlework leadout hole and the 3rd needlework leadout hole to this needlework supporting member.
8. the needlework let-off gear(stand) of Sewing machines according to claim 7 is characterized in that, above-mentioned needlework supporting member can change the fixed position up and down and constitute.
9. the needlework let-off gear(stand) of Sewing machines according to claim 7 is characterized in that, the line bearing portion of above-mentioned needlework supporting member has the step of living than the Zao also high position ability frame of a side that enters the needlework ring of looper in many needlework part.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002166331A JP3834754B2 (en) | 2002-05-01 | 2002-05-01 | Sewing machine |
| JP2002166331 | 2002-05-01 |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410032362 Division CN1542196B (en) | 2002-05-01 | 2003-04-30 | Needle thread feeding device of sewing machine |
| CN 200510074648 Division CN1690285B (en) | 2002-05-01 | 2003-04-30 | Needle thread feeding device of sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1455042A true CN1455042A (en) | 2003-11-12 |
| CN100523349C CN100523349C (en) | 2009-08-05 |
Family
ID=29267854
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031307787A Expired - Fee Related CN100523349C (en) | 2002-05-01 | 2003-04-30 | Needle-thread guiding out device of sewing machine |
| CN 200510074648 Expired - Fee Related CN1690285B (en) | 2002-05-01 | 2003-04-30 | Needle thread feeding device of sewing machine |
| CN 200410032362 Expired - Fee Related CN1542196B (en) | 2002-05-01 | 2003-04-30 | Needle thread feeding device of sewing machine |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510074648 Expired - Fee Related CN1690285B (en) | 2002-05-01 | 2003-04-30 | Needle thread feeding device of sewing machine |
| CN 200410032362 Expired - Fee Related CN1542196B (en) | 2002-05-01 | 2003-04-30 | Needle thread feeding device of sewing machine |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3834754B2 (en) |
| CN (3) | CN100523349C (en) |
| TW (3) | TWI283274B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4722503B2 (en) * | 2005-02-02 | 2011-07-13 | Ｊｕｋｉ株式会社 | sewing machine |
| JP5953062B2 (en) * | 2012-02-16 | 2016-07-13 | ペガサスミシン製造株式会社 | Sewing machine |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3140377C2 (en) * | 1981-10-10 | 1984-10-11 | Union Special Gmbh, 7000 Stuttgart | Thread control device for a sewing machine |
| US5447109A (en) * | 1993-10-27 | 1995-09-05 | Union Special Corporation | Thread handling system for a sewing machine |
| JP4296560B2 (en) * | 1999-12-30 | 2009-07-15 | ヤマトミシン製造株式会社 | Needle thread guide device for double chain stitch sewing machine |
-
2002
- 2002-05-01 JP JP2002166331A patent/JP3834754B2/en not_active Expired - Lifetime
-
2003
- 2003-04-28 TW TW92109840A patent/TWI283274B/en not_active IP Right Cessation
- 2003-04-28 TW TW93110329A patent/TWI283275B/en not_active IP Right Cessation
- 2003-04-28 TW TW94107288A patent/TWI289163B/en not_active IP Right Cessation
- 2003-04-30 CN CNB031307787A patent/CN100523349C/en not_active Expired - Fee Related
- 2003-04-30 CN CN 200510074648 patent/CN1690285B/en not_active Expired - Fee Related
- 2003-04-30 CN CN 200410032362 patent/CN1542196B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1542196B (en) | 2010-09-22 |
| TW200403370A (en) | 2004-03-01 |
| TWI283274B (en) | 2007-07-01 |
| CN1690285A (en) | 2005-11-02 |
| CN100523349C (en) | 2009-08-05 |
| TW200526837A (en) | 2005-08-16 |
| JP3834754B2 (en) | 2006-10-18 |
| TWI283275B (en) | 2007-07-01 |
| CN1542196A (en) | 2004-11-03 |
| JP2003320190A (en) | 2003-11-11 |
| CN1690285B (en) | 2010-12-22 |
| TWI289163B (en) | 2007-11-01 |
| TW200419027A (en) | 2004-10-01 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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Granted publication date: 20090805 Termination date: 20200430 |