CN201165584Y

CN201165584Y - Latch needle

Info

Publication number: CN201165584Y
Application number: CNU2007201255770U
Authority: CN
Inventors: 北原健治
Original assignee: Shima Seiki Mfg Ltd
Current assignee: Shima Seiki Mfg Ltd
Priority date: 2006-10-06
Filing date: 2007-10-08
Publication date: 2008-12-17
Anticipated expiration: 2017-10-08
Also published as: JP5032822B2; KR200464247Y1; KR20080000433U; JP2008095213A

Abstract

The utility model relates to a latch needle. The perimeter of the needle stem can be shortened during the pushback and the functions of yarn sinking, plate clamping and loop transferring can be reliably performed. In the latch needle, the needle stem adopts approximate rectangular section shape, and a needle hook is provided with an opening at the lateral front end of the surface, and is provided with a needle latch for displacing and switching the needle hook by oscillation. The latch needle is characterized in that under the condition that the needle hook is unbolted by the needle latch to a maximum extent, a notch is arranged on the needle stem adjacent to the surface position of the needle stem at the front end of the needle latch, the notch reaches to a flank at one side at least from the intermediate part of the bottom surface as the needle groove sliding surface, and the perimeter is smaller than the rectangle.

Description

Latch needles

Technical field

The utility model relates to the latch needles that uses in straight-bar machines.

Background technology

In the past, in straight-bar machines, on the length direction of needle-bar, formed a plurality of needle trays, made the knitting needle slide displacement that is contained in each needle tray, thereby at the tooth mouth making knit fabric relative with a side of needle-bar.Tooth oral-lateral front end at knitting needle is formed with pinhock.When pinhock enters the tooth mouth under the state of opening, in pinhock, supply with stocking yarn.The pinhock of supply of accepting stocking yarn at the tooth mouth is introduced stocking yarn and is formed coil when the needle-bar side is retracted into.When pinhock enters the tooth mouth, be formed with coil in pinhock, formed coil is done side shifting to pin in pinhock.Move to pin and do the coil of side, when the needle-bar side is retracted into, breaks away from the tooth mouth from the pinhock knocking over of closing, thereby become old coil at pinhock.Because continuous formation knitted fabric by the old coil that in the tooth mouth, breaks away from.As the knitting needle of straight-bar machines, be extensive use of the latch needles that opens and closes pinhock by needle latch.

Fig. 4 represents a near example of the brief configuration that the front end of latch needles 1 is.As in Fig. 4 (a) from top view, on latch needles 1, open and close the pinhock 2 of front ends with needle latch 3.Needle latch 3, with fulcrum 4 as the center, as the state of closing pinhock 2 represented with solid line and as the state of representing with double dot dash line of opening pinhock 2 to greatest extent between swing displacement.Though omit diagram about the needle tray that contains latch needles 1, the needle-bar that is formed with needle tray, the bottom surface of pin dried 5 is along the basal sliding of needle tray, latch needles 1 is to the left and right directions displacement of accompanying drawing thus.Near pin is done the front end of the needle latch of opening to greatest extent in 53, be provided with lower recess 6 (for example with reference to patent documentation 1) at bottom surface side.

The latch needles 1 that Fig. 4 (b) expression is observed from the bottom surface side of Fig. 4 (a).Shown in Fig. 4 (b), on latch needles 1, do 5 side one side at pin and be provided with side-facing depressions 7, in the bottom surface be provided with between the side of side-facing depressions 7 and also be provided with tiltedly depression 8 of uniclinal.Shown in Fig. 4 (a), also be provided with end difference 9 on the surface of pin dried 5.In the side of end difference 9, also be provided with the blade 10 that is used for barring-on.Blade 10 is that front end is free-ended leaf spring, and front end is housed in the side-facing depressions 7 and closes.

Barring-on is carrying out between the knitting needle of relative needle-bar across the tooth mouth.When the latch needles 1 of the barring-on side of hold-in winding enters the tooth mouth near end difference 9, remain on the coil on the pinhock 2, relatively move from the direction of pinhock 2 to end difference 9.Even pinhock 2 is closed by needle latch 3, the coil that moves is also opened needle latch 3 from the inboard, and needle latch 3 is by being that the swing displacement at center opens to the state of representing with double dot dash line with fulcrum 4 thus.Coil is crossed the needle latch of opening 3 and is moved to end difference 9.Blade 10 owing to front end is closed, thereby enters the inboard of coil.Enter the front end of pinhock 2 of latch needles 1 of the adapter ring side of tooth mouth from relative needle-bar, be directed to tiltedly depression 8 and enter blade 10 and pin is done between 5 of uniclinal.The latch needles 1 of barring-on side is when the tooth mouth retreats, and coil is caught by the pinhock 2 of the latch needles 1 of adapter ring side, and the pinhock 2 of latch needles 1 of catching the adapter ring side of coil is opened blade 10 and deviate from.The coil of being caught by the pinhock 2 of adapter ring side breaks away from when the latch needles 1 that makes the barring-on side enters the downside of needle latch 3 and closes pinhock 2 by needle latch 3.(for example with reference to patent documentation 2).

At the cross sectional shape of Fig. 4 (c) expression from the part of the lower recess 6 of the cut-out line C-C observation of Fig. 4 (a).Latch needles 1 is made owing to the stamping-out with metallic plate is processed as the basis, thereby the basic cross sectional shape of pin dried 5 is rectangular.Lower recess 6, owing to the bottom surface side of pin being done 5 is subdued equably and is formed, though thereby cross sectional shape rectangular, girth reduces.

Fig. 5 represents to be provided with the reason of lower recess 6.Why lower recess 6 is set, and is when forming basic maille for latch needles 1 enters tooth mouth 11, makes the coil 12 that remains on the pinhock 2 open needle latch 3 and do 5 sides to pin easily to break away from.In addition, in straight-bar machines, owing to tilt respectively in the mode that tooth mouth 11 sides rise across tooth mouth 11 relative needle-bars, thereby represent latch needles 1 with the posture that tilts.When latch needles 1 enters to the oblique upper of tooth mouth 11, remain on the coil 12 in the pinhock 2, cross needle latch 3 when opening needle latch 3 and do 5 side shiftings and move back circle to pin.When pinhock 2 was supplied with stocking yarn, latch needles 1 retreated from tooth mouth 11 at tooth mouth 11.Move to pin and do that the coil 12 of 5 sides enters needle latch 3 and pin is done between 5 owing to cross the knocking over that pinhock 2 breaks away from when closing needle latch 3, with respect to again in pinhock 2 new coil of formation become old coil 13.The old coil 13 that forms successively thus, sagging and assemble to the below of tooth mouth 11, thus form knitted fabric 1.

Move back circle and knocking over for what carry out coil 12 exactly, need do the difference in height that is provided with between 5 to a certain degree at the front end and the pin of the needle latch 3 of open mode.Shown in Fig. 5 (a), coil 12, just will move back the necessary before loop length of circle and become maximum under the state of the front end of needle latch 3 in mounting.The minimal coil dimension that this loop length decision can weave.Pinhock 2 is introduced stocking yarns, even the introducing amount when reducing to form coil 12 makes loop length less, can not make needle latch 3 move back circle, then can not form knitted fabric 14.When lower recess 6 is set, shown in Fig. 5 (b), can reduces pin and do 5 girth, can when moving back circle, reduce the loop length of surrounding needle latch 3 and pin dried 5.

In addition, also disclose following technology: enclose easily in order to make moving back of coil 12, insert kinking pressing plates 15 pressing devices such as knitted fabric such as grade (for example with reference to patent documentation 3) at tooth mouth 11.And also disclose following technology: in order to reduce the girth required in the circle that moves back that comprises needle latch 3 and pin dried 5, cave in 16 in needle latch 3 side settings on the double dot dash line shown in phantom, the front end that makes needle latch 3 is as descending with shown in the double dot dash line.For example, in the latch needles of in Fig. 4 to Figure 10 of patent documentation 2, representing, confirmed to be equivalent to the recess of depression 16.

Patent documentation 1: open flat 3-70286 communique in fact

Patent documentation 2: the spy opens the 2006-57234 communique

Patent documentation 3: special public clear 62-15662 communique

When the lower recess 6 shown in Fig. 4 (a) is set, shown in Fig. 5 (a), when using kinking pressing plate 15, between kinking pressing plate 15 and lower recess 6, produce the gap.Under the thinner situation of the stocking yarn that forms coil 12, old coil 13, may be insufficient with the effect of the old coil of kinking pressing plate 15 pushings.When the effect of kinking pressing plate 15 was insufficient, coil 12 entered to tooth mouth 11 sides with latch needles 1 under the state of the front end of needle latch 3 in mounting, thereby can not make coil 12 move back circle.

As using the double dot dash line shown in phantom at Fig. 5 (a), the bottom surface side that kinking pressing plate 15 is played a role flatly is provided with depression 16, when needle latch 3 is descended, kinking pressing plate 15 is played a role fully.By last depression 16,5 sides are done near pin in the position of the needle latch 3 when moving back circle, can reduce loop length required when moving back circle.But, depression 16 being set and when needle latch 3 is descended, when carrying out aforesaid barring-on, the coil 12 of being caught by the pinhock 2 of the latch needles 1 of adapter ring side at end difference 9 is difficult to enter the downside of needle latch 3, easily the upside by needle latch 3 or reach the front end of needle latch 3.During the upside of the coil 12 of barring-on by needle latch 3, get back in the pinhock 2 of open mode, can not break away from from the pinhock 2 of the latch needles 1 of barring-on side, thereby can not make coil 12 to the adapter ring side shifting.When coil 12 arrived the front end of needle latch 3, yarn was cut off.

When reducing loop length required when moving back circle, can not weave less coil fully.

The utility model content

The purpose of this utility model is to provide a kind of latch needles, can shorten the girth that the pin when moving back circle is done, and can carry out effect, the barring-on of kinking pressing plate reliably.

Latch needles of the present utility model, the dried cross sectional shape of pin with essentially rectangular, pinhock is at the front opening of face side, and be provided with the needle latch that opens and closes pinhock with the swing displacement, it is characterized in that, open to greatest extent at needle latch under the state of pinhock that the front end of needle latch is done near near the pin the position on the dried surface of pin and is provided with depression, described depression arrives a side side at least from the pars intermedia as the bottom surface of needle tray sliding surface, and girth is less than this rectangle.

And in the utility model, it is characterized in that above-mentioned depression arrives the side, both sides and is provided with from the pars intermedia of above-mentioned bottom surface.

And in the utility model, it is characterized in that, arrive the side, both sides and the depression that is provided with, comprise towards bottom surface side and become 55 ° ± 10 ° angle and the inclined plane that narrows down at interval from the pars intermedia of above-mentioned bottom surface.

According to the utility model, owing to open to greatest extent under the state of pinhock at needle latch, near the close pin in position of the front end of needle latch is done, be provided with from the pars intermedia of bottom surface and arrive a side side and girth depression at least, thereby can move back the girth that the position of circle does pin from needle latch at coil and reduce less than this rectangle.The bottom surface side that pin is done is dug up the less part of the also residual degree of not dug up or diging up in pars intermedia even arrive at least one side side.Because even the part of bottom surface is provided with depression, also residual at surface that pin is done and the interval between the bottom surface have a part identical with the rectangle of cross sectional shape, thereby under the situation with kinking pressing plate, the gap can not opened, and can fully carry out the effect of kinking pressing plate.In the face side that pin is done, can abolish or reduce and be used to make depression that girth reduces etc.Latch needles becomes the barring-on side and when carrying out barring-on, and the coil of being caught by the pinhock of adapter ring side is entered between the face side that needle latch and pin do, and coil is broken away from from the latch needles of barring-on side, thereby carry out barring-on reliably.

And according to the utility model, be provided with depression owing to the pars intermedia from the dried bottom surface of pin arrives the side, both sides, thereby compare, can realize reducing girth easily with the situation that only is provided with depression in a side side.

And, owing to arriving the depression that the side, both sides is provided with, comprise towards bottom surface side and become 55 ° ± 10 ° angle and the inclined plane that narrows down at interval, thereby can realize forming smoothly coil from the pars intermedia of bottom surface according to the utility model.

Description of drawings

Fig. 1 (a) is near the front end that is illustrated in as the latch needles 21 of an embodiment of the present utility model, and coil 12 moves back near the part front view of the structure the part of circle.

Fig. 1 (b) is near the front end that is illustrated in as the latch needles 21 of an embodiment of the present utility model, and coil 12 moves back near the cutaway view of the structure the part of circle.

Fig. 2 (a) is the front view that comprises the structure of transfer section in the latch needles 21 of presentation graphs 1.

Fig. 2 (b) is the upward view that comprises the structure of transfer section in the latch needles 21 of presentation graphs 1.

Fig. 2 (c) makes coil move back the cutaway view of the part of circle.

Fig. 3 (a) is the part front view of the relation between the motion track of the coil 12 when going up depression and barring-on for latch needles 21 expression of Fig. 1.

Fig. 3 (b) is the part front view of the relation between the motion track of the coil 12 when going up depression and barring-on as latch needles 32 expression of another embodiment of the present utility model.

Fig. 3 (c) is the relation between the motion track of depression and the coil 12 during barring-on of a part front view represent to(for) comparative example.

Fig. 4 (a) is near the front view of an example of the brief configuration of the front end of the existing latch needles 1 of expression.

Fig. 4 (b) is near the upward view of an example of the brief configuration of the front end of the existing latch needles 1 of expression.

Fig. 4 (c) makes coil move back the phantom of circle.

Fig. 5 (a) is illustrated near the front end of latch needles 1 of Fig. 4, and coil 12 moves back near the part front view of the structure the part of circle.

Fig. 5 (b) is illustrated near the front end of latch needles 1 of Fig. 4, and coil 12 moves back near the cutaway view of the structure the part of circle.

The specific embodiment

Fig. 1 represents as near the structure the front end of the latch needles 21 of an embodiment of the present utility model.In following Fig. 1 to Fig. 3, the structure division beyond latch needles 21 and with Fig. 4, the identical structure division of structure division shown in Figure 5, mark identical label sometimes and the repetitive description thereof will be omitted.

As shown in Figure 1, the pinhock 22 of latch needles 21, needle latch 23, fulcrum 24 and pin are done basic structures such as 25 and are done 5 identical with pinhock 2, needle latch 3, fulcrum 4 and the pin of Fig. 4 and latch needles 1 shown in Figure 5 respectively.Wherein, on latch needles 21, the lower recess 16 of latch needles 1 is not set, tilts to cave in 26 and both sides are set.The tilt degree of depression 26 of both sides is set, near the front end of the needle latch 23 of the state of opening to greatest extent, becomes maximum, towards the southern side of the length direction of latch needles 21 and level and smooth the minimizing.

In latch needles 1, pinhock 22 is done 25 surperficial 25a side opening at pin, and needle latch 23 is located on the position relative with the opening of pinhock 22.Inclination depression 26 in both sides is formed up to side 25c, the 25d of both sides from the bottom surface 25b of pin dried 25.As the tilt top 26a of depression 26 of both sides, residual have with pin do the 25 suitable parts of pars intermedia of bottom surface 25b that are not provided with the part of depression.As the knitting needle of the straight-bar machines of latch needles 1 grade, be contained in the needle tray that is located on the needle-bar and carry out slide displacement, bottom surface 25b forms sliding surface.

For example observe expression at Fig. 1 (b) from the section line B-B of Fig. 1 (a), the both sides depression 26 that tilts forms short circuit inclined plane between the both sides of pars intermedia of the bottom surface 25b that will remove into rectangle bottom in pin is done 25 cross sectional shape and side, both sides 25c, the 25d.The both sides of the linearity depression 26 that tilts, owing to be equivalent to the hypotenuse of right angled triangle with respect to the corner portion of the square-section before the chamfering, thereby it is shorter to compare the length sum on two limits of clamping relative right angle, girth reduces.Distance between the top 26a of the surperficial 25a of pin dried 25 and both sides inclination depression 26, and surperficial 25a and the distance between the 25b of bottom surface in the part of square-section are same degree, owing to can as the situation that lower recess 6 is set of Fig. 4, not reduce, thus can prevent paper with Fig. 1 (b) vertical, pin does the flexural rigidity reduction of 25 length direction.

Shown in Fig. 1 (a), under the situation of using kinking pressing plate 15,, thereby can bring into play the effect of kinking pressing plate 15 fully because the gap that tilts between the top 26a of depression 26 as the both sides of the pars intermedia of the bottom surface 25b of kinking pressing plate 15 and latch needles 21 reduces.Under the effect of kinking pressing plate 15, old coil 13 can not rise to tooth mouth 11 with latch needles 21, can make coil 12 move back circle from the front end of needle latch 23 reliably.In addition, as the tilt top 26a of depression 26 of both sides, the part of pars intermedia of doing 25 bottom surface 25b with pin is residual imperfectly, even top 26a compares the side depression that bottom surface 25b more relies on surperficial 25a, need only its degree less just regard as smooth.This is that the reduction of flexural rigidity is also less because the gap between top 26a and the kinking pressing plate 15 is less.Even top 26a recessed a little (for example, about 0.1mm), the effect of kinking pressing plate 15 is also effective.

Fig. 2 is the latch needles 21 of Fig. 1, represents to comprise the structure of transfer section accordingly with the latch needles 1 of Fig. 4.Do on 25 at pin, with both sides tilt that depression 26 is provided with that side-facing depressions 27, uniclinal tiltedly cave in 28, ladder 29 and blade 30.Described structural element tiltedly caves in 8 with side-facing depressions 7, the uniclinal of the latch needles 1 of Fig. 4 respectively, end difference 9 and blade 10 are identical.Fig. 2 (a) expression is from the structure of top view, and Fig. 2 (b) expression is from the structure of the bottom surface side observation of Fig. 2 (a), and Fig. 2 (c) expression is from the cross sectional shape of the section line C-C observation of Fig. 2 (a).

Shown in Fig. 2 (a), near the surperficial 25a of the pin the front end of the needle latch under the state of opening 23 dried 25, be provided with upward depression 31 a little.But depression 31 is little of the degree that obstacle can or not take place when barring-on on this.Shown in Fig. 2 (b), two lateral incline of both sides inclination depression 26 intersect at the bottom surface of latch needles 21 25b, and the top 26a that becomes crest line does 25 substantial middle by pin.

Shown in Fig. 2 (c), the tilt partial cross section of depression 26 of both sides is shaped as the V-arrangement of pars intermedia of bottom surface 25b of the square-section of the residual part that is not provided with depression, does the shape that 25 both sides become symmetry at pin.By angulation θ between two inclined-planes of both sides inclination depression 26,, be preferably 55 ° ± 10 ° degree as can be known by the result who carries out various tests.

Fig. 3 be illustrated in Fig. 2 (a) expression go up depression 31 and barring-on the time the motion track of coil 12 between relation.Shown in Fig. 3 (a), when barring-on, relatively be retracted into to the coil 12 of ladder 29 and relatively advance to needle latch 23 1 sides.If last depression 31 is not dark, the motion track 21a on the latch needles 21 then does 25 surperficial 25a along pin and enters needle latch 23 and go up between the depression 31, and coil 12 and then when advancing is closed pinhock 22 and can be from latch needles 21 disengagings of barring-on side with needle latch 23.

Fig. 3 (b) expression is not provided with the structure of the latch needles 32 of depression as another embodiment of the present utility model.If depression is not set, do the motion track 32a of the coil 12 of 35 surperficial 35a along pin, can enter needle latch 23 and pin reliably and do between 35 the surperficial 35a.Replace depression is not set, can make and do both sides that 35 bottom surface 35b the is located at two sides depression 36 that tilts from pin and increase, thereby reduce the girth of pin dried 35, required loop length increase in the time of can preventing Non-return ring.With the cross sectional shape of the V-arrangement shown in Fig. 2 (c), make both sides tilt the inclined plane of depression 26 when becoming big, diminish by angulation θ between the inclined plane.

Fig. 3 (c) expression as a comparative example latch needles 40 and do 45 at pin and only be provided with and cave in 41, the structure of depression is not set on the 45b of bottom surface.Even the 45b side is not provided with depression in the bottom surface, also can and needle latch 23 be reduced and shorten the girth that moves back when enclosing by depression 41 on the surperficial 45a side.And because that pin is done 45 bottom surface 45b is smooth, thereby the effect when using kinking pressing plate 15 can also be carried out fully.But the motion track 40a of the coil 12 during barring-on and needle latch 23 collisions by the upside of needle latch 23, are caved between 41 thereby be difficult to enter needle latch 23 and go up easily.The yarn of coil 12 is cut off when motion track 40a and needle latch 23 collisions.When motion track 40a passed through the upside of needle latch 23, coil 12 was return in the pinhock 22, thereby can not carry out barring-on.

In the latch needles 21 shown in Fig. 3 (a), even 31 also become more shallow state because depression is set, thereby motion track 21a can enter between needle latch 23 and the pin dried 25, can make coil 12 to the adapter ring side shifting when closing pinhock 22 with needle latch 23.And, in latch needles 21, latch needles 32, open to greatest extent at needle latch 23 under the state of pinhock 22, do 25,35 surperficial 25a, 35a opposed bottom surface 25b, 35b with pin near needle latch 23 front ends, except the both sides of the pars intermedia that becomes top 26a, 36a as

tilt depression

26,36 and being dug up of both sides, thereby can make the pin that coil 12 is moved back circle from needle latch 23 do 25,35 part girth to reduce.Because the pars intermedia of bottom surface 25b, 35b is not dug up, thereby has under the kinking pressing plate situation, the gap can not opened greatly, thereby the effect of kinking pressing plate 15 can be carried out fully.Do on surperficial 25a, the 35a corresponding in 25,35 the cross sectional shape at pin with a side that is provided with needle latch 22, can abolish or reduce and be used to make depression that girth reduces etc., thereby the coil 12 of being caught by the pinhock 22 of adapter ring side is broken away from from the pinhock 22 of closing with needle latch 23, can carry out barring-on reliably.

In addition, the cross sectional shape of expression both sides inclination depression 26 has the inclined plane of linearity in Fig. 1 (b), and the cross sectional shape of

depression

26,36 also can be the curved surface that becomes curve but both sides tilt.And, even only depression is set, also can realize the shortening of girth in a side from bottom surface 25b to side 25c, 25d, can fully carry out the effect of kinking pressing plate 15.

Claims

1. latch needles, the dried cross sectional shape with essentially rectangular of pin, pinhock be at the front opening of face side, and be provided with the needle latch that opens and closes pinhock with the swing displacement, it is characterized in that,

Open to greatest extent at needle latch under the state of pinhock, near the pin the position on the surface that the front end of needle latch is done near pin is done and is provided with depression, and described depression arrives a side side at least from the pars intermedia as the bottom surface of needle tray sliding surface, and girth is less than this rectangle.

2. latch needles according to claim 1 is characterized in that, described depression arrives the side, both sides and is provided with from the pars intermedia of described bottom surface.

3. latch needles according to claim 2 is characterized in that, arrives the side, both sides and the depression that is provided with from the pars intermedia of described bottom surface, comprises towards bottom surface side to become 55 ° ± 10 ° angle and the inclined plane that narrows down at interval.