CN1584167A - Method and apparatus for retaining and cutting yarns - Google Patents

Abstract

A knitting yarn-holding and cutting device 1 is attached to the edge of the needle bed and the hook bar 7 of the holding part 3 and the cutter bar 27 of the cutting part 4 are driven with the knitting cum 39 loaded on the carriage 38 for driving the knitting needles 47. The switching 49 switches the position of the yarn feeding opening 46 to which carriage follows from the position shown with the tentative line on the knitting to the position near the center line 39a of the knitting cum 39. When the compound needles are used as knitting needles, the stitch density adjusting mechanism is used to the cutter bar 27 to broaden the drawing stroke.

Description

Stocking yarn keeps cutting-off method and device

Technical field

When the present invention relates in straight-bar machines to use multiple stocking yarn making knit fabric, finish the braiding of the row of regulation, utilize the pinhock bar to remain between the thread-carrier by no stocking yarn in braiding next time, the stocking yarn that utilizes cutter bar to cut off between the part of utilizing the pinhock bar to keep and knitted fabric keeps cutting-off method and device.

Background technology

Up to the present, in straight-bar machines, alternately use multiple stocking yarn, for example the stocking yarn that color is different carries out the braiding of the figured texture weave etc. of multiple color.In addition, for example,,, but locate to use heat fusing adhesion yarn and lastex etc. at fabric ends etc. sometimes even seem to use single stocking yarn as product.In order to use multiple stocking yarn, on the tooth mouth that weaves, a plurality of thread-carriers are set.Cam carrier moves along the needle-bar of a plurality of knitting needles of configuration, when utilization is arranged on knitting cam on the cam carrier and makes knitting needle produce braid movement, will drive on the cam carrier one of in a plurality of thread-carriers.Position when thread-carrier is driven is positioned at the penetralia that makes knitting needle enter the tooth mouth with knitting cam and draws in midway from the tooth mouth afterwards.Do not driven the thread-carrier on the cam carrier, static standby.In being in the thread-carrier of holding state,, keep the front end of stocking yarn with the maintaining part of the stocking yarn maintenance shearing device of being located at the needle-bar end.Row in the some stocking yarn braidings of use finishes, this stocking yarn temporarily is not used in after next row and weaves under the situation about stopping, the stocking yarn that stops to be kept the maintaining part maintenance of shearing device by stocking yarn after, utilize stocking yarn to keep the cut-out portion of shearing device, will cut off between knitted fabric and the maintaining part.

Figure 14, Figure 15, Figure 16 and Figure 17 represent to keep the relevant structure (for example, with reference to patent documentation 1) of shearing device with the stocking yarn of the needle-bar end of being located at straight-bar machines.Figure 14 represents planar structure, and Figure 15 represents the side cross-section structure relevant with maintaining part, and Figure 16 represents the side cross-section structure relevant with cut-out portion, and Figure 17 represents to be arranged on the configuration of the cam mechanism on the cam carrier.

As shown in figure 14, stocking yarn keeps shearing device 51 to be arranged on the end of needle-bar 52, for example, comprising: four groups of maintaining parts 53 and one group of cut-out portion 54.On needle-bar 52, flat board equally spaced is set, and (プ レ-ト) 55, form gathering sill 56 between dull and stereotyped 55.Maintaining part 53, as shown in figure 15, comprise can be in gathering sill 56 with respect to the pinhock bar 57 of tooth mouth advance and retreat displacement.Pinhock bar 57 has pinhock 58 on its front end, the front end of pinhock bar push jack 59 is engaged on its rear end.Because pinhock bar push jack 59 is with respect to being drawn by spring 61 with needle-bar 52 supports 60 in aggregates, so pinhock bar 57 also loads by to be incorporated into the inside of needle-bar 52.In gathering sill 56, upper at pinhock bar push jack 59 is provided with pinhock bar selector 62.Pinhock bar selector 62, its front end contacts with the protuberance 63 of pinhock bar push jack 59, has protuberance 64,65,66.

As shown in figure 17, the actuator 67 that needle selection is used is set on cam carrier, has four swing sheet 68a that can optionally move, 68b, 68c, 68d.The protuberance 66 of pinhock bar selector 62 central authorities shown in Figure 15 utilizes actuator 67 to select to use, and in four groups of maintaining parts 53, is configured in different positions respectively.Flat metal silk (プ レ-ト ワ イ ヤ) 69,70 be along the direction perpendicular to paper,, runs through dull and stereotyped 55 along the length direction of needle-bar 52 that is.Flat metal silk 69 constitutes the retainer of the going-back position of pinhock bar push jack 59, and at the going-back position place, flat metal silk 70 is coupled on the depressed part 71 of pinhock bar selector 62, becomes the fulcrum of swing displacement.Metal tape is inserted into dull and stereotyped 55 top.On pinhock bar 57, protuberance 74 is set.

As shown in figure 16, in cut-out portion 54, cutter bar 77, cutter bar push jack 78 and cutter bar selector 79 can with respect to the tooth mouth in gathering sill 56, advance and retreat ground displacement.The front end of cutter bar 77 bends to hook-shapedly, at the rear portion of front end cutting edge 80 is set.On cutter bar 77 and cutter bar push jack 78, protuberance 81,82 is set respectively.On cutter bar 77, near the top of the flat board on the back side that is connected in cutting edge 80 55, counteredge 83 is set, shear stocking yarn with counteredge 83 and cutting edge 80, carry out the cut-out of stocking yarn.In cutter bar selector 79, adopt the structure identical with pinhock bar selector 62, swinging sheet 68a corresponding to four, 68b, 68c on each position of 68d, is provided with protuberance 66.

As shown in figure 17, on the base plate 90 of the cam carrier that carries knitting cam 89, comprise actuator 67, selector stretches out triangle 91, selector elevating cam triangle 92, selector guiding triangle 93, pinhock bar lifting triangle 94 and cutting knife needle clearing cam 95.When cam carrier when the needle-bar 52 of Figure 14 moves, thread-carrier 96 is driven, so that move to position 96a, the 96b in moving direction downstream in position from the top of knitting cam 89 stocking yarn 98 is supplied to knitting needle 97.

In that stocking yarn is kept under the situation of shearing device 51 actions, when cam carrier passes through the end of needle-bar 52, make the swing sheet 68a of actuator 67 selectively, 68b, 68c, 68d keeps out of the way.In the position of Figure 17 A, utilize selector to stretch out on the afterbody of triangle 91 with pinhock bar selector 62 and cutter bar selector 79 and push away.Since protuberance 66 not with the swing sheet 68a that keeps out of the way, 68b, 68c, the 68d contact, so, selected pinhock bar selector 62 and cutter bar selector 79 be by being the swing displacement at center with the depressed part 71 that cooperates with flat metal silk 70, becomes the state that floats in the gathering sill 56, and the effect that the protuberance 65 of afterbody is subjected to selector elevating cam 92 enters the tooth oral-lateral.In the position of Figure 17 B, the protuberance 64 of pinhock bar selector 62 and cutter bar selector 79 contacts with the downward inclined-plane 93a of selector guiding triangle 93, begins to retreat.The protuberance 74 of pinhock bar 57 and the protuberance 81 of cutter bar 77 are subjected to the effect of inclined-plane 94a of the rising of pinhock bar lifting triangle 94, and pinhock bar 57 and cutter bar 77 further enter the tooth oral-lateral.Under the state that enters the tooth oral-lateral to greatest extent, accept from the supply of the next stocking yarn 98 of thread-carrier.

Position at the C of Figure 17, pinhock bar 57 beginnings of being drawn by spring 61 turn back in the needle-bar 52 along the inclined-plane 94b of the decline of pinhock bar lifting triangle 94, when the inclined-plane 94b of the decline of pinhock bar lifting triangle 94 finishes, pinhock bar 57 is drawn by spring 61 and retreats, and stocking yarn 98 clampings is remained between the front end and pinhock 58 of flat board 55.Because cutter bar 77 is not pulled, does not retreat to needle-bar 52, so until continue the outstanding state of maintenance till the D position of Figure 17, at protuberance 81 with after the downward inclined-plane 95a of cutting knife needle clearing cam 95 contacts, along with protuberance 81 95 declines along downward inclined-plane, cutting edge 80 is sheared and is cut off stocking yarn 98 near counteredge 83.

[patent documentation 1] special fair 1-56175 communique (the 3rd page, the 4th page, the 1st figure, the 2nd figure C, the 2nd figure D, the 5th figure)

The content of invention

Stocking yarn at Figure 14～shown in Figure 17 keeps in the shearing device 51, and the selection of being undertaken by actuator 67 and the rising ramp 94a of selector elevating cam 92 and crochet hook bar lifting triangle 94 are shared in maintaining part 53 and cut-out portion 54.In addition, shared one of the actuator that is provided with by actuator 6 with for the needle selection of knitting needle 97 is in the hope of reaching the miniaturization of cam carrier.But crochet hook bar lifting triangle 94 and knitting cam 89 are the special-purpose triangles that separately are provided with separately.The allocation position of crochet hook bar lifting triangle 94 with regard to the moving direction of cam carrier, is positioned at knitting cam 89 rear sides.In addition, though with regard to the moving of cam carrier, compare the foreign side that maintaining part 53 is positioned at the end of needle-bar 52 with cut-out portion 54, cut-out portion 54 is subjected to the effect of cam carrier earlier, be subjected to the effect of cam carrier after the maintaining part 53, but must just cut off stocking yarns 98 at first with after the maintaining part 53 maintenance stocking yarns 98 with cut-out portion 54.Therefore, must strengthen the distance of crochet hook bar lifting triangle 94 and cutting knife needle clearing cam 95.When the distance of crochet hook bar lifting triangle 94 and cutting knife needle clearing cam 95 increases, can cause the maximization of cam carrier.

When cam carrier maximizes, in needle-bar 52, need big space in the both sides of the part that knitting needle 57 is set, the length of needle-bar 52 increases, and also can maximize as straight-bar machines.

The objective of the invention is, providing a kind of can keep cutting-off method and device with the stocking yarn of cam carrier miniaturization.

The present invention is that a kind of stocking yarn keeps cutting-off method, cam carrier is moved along the length direction of the needle-bar of the straight-bar machines of a plurality of knitting needles of configuration, the knitting cam that one side utilization is loaded on the cam carrier drives knitting needle, one side is supplied stocking yarn from the thread-carrier that drives on the cam carrier to knitting needle, the row of making knit fabric is utilized cutter bar and the pinhock bar be located at the needle-bar end, keeps in the braiding of next row and cuts off no stocking yarn, it is characterized in that

When braiding, with with knitting needle from needle-bar is projected into most external, the corresponding to thread-carrier of half-way of the knitting cam that is introduced into is subsequently driven timing, when stocking yarn keeps cutting off, be altered near the position on knitting needle with when braiding is projected into outermost knitting cam from needle-bar the top

Utilize knitting cam to drive respectively, make cutter bar and crochet hook bar give prominence to and introduce needle-bar from needle-bar.

In addition, stocking yarn of the present invention keeps cutting-off method, it is characterized in that, utilizing knitting cam loop density to be set with the triangle action when the outstanding cutter bar of needle-bar is introduced needle-bar, strengthens the advance and retreat stroke of cutter bar.

And then, the present invention is that a kind of stocking yarn keeps shearing device, device makes cam carrier move along the length of the needle-bar of the straight-bar machines of a plurality of knitting needles of configuration, the knitting cam that one side utilization is loaded on the cam carrier drives knitting needle, one side is supplied stocking yarn from the thread-carrier that drives on the cam carrier to knitting needle, the row of making knit fabric, the cutter bar and the pinhock bar of needle-bar end is located in utilization, keep and be breaking at no stocking yarn in the braiding of next row, it is characterized in that, comprising:

Drive the position switching mechanism, this switching mechanism will be for cam carrier the drive position of thread-carrier, when braiding, switch to consistent with the half-way of the knitting cam that knitting needle is drawn in after needle-bar is projected into most external, when stocking yarn keep to cut off, switch near the position on knitting needle with will weave the time is projected into outermost knitting cam from needle-bar the top consistent

Keep cutting off selection mechanism, this selection mechanism can be selected active state and non-active state, drive in the following manner at active state, promptly, knitting cam is affacted on cutter bar and the pinhock bar, make cutter bar and pinhock bar outstanding, afterwards from needle-bar, introduce needle-bar respectively, till promptly using cutter bar to keep stocking yarn also to be unlikely to its cut-out, by pinhock bar maintenance stocking yarn; Under non-active state, knitting cam is affacted on cutter bar and the pinhock bar, thereby do not carry out cutter bar and the outstanding and introducing of pinhock bar from needle-bar,

Introduce selection mechanism, this introduces selection mechanism, under by the active state that keeps cut-out selection mechanism to determine, affact on the cutter bar and pinhock bar of the state that makes it from needle-bar is prominent, to go out and be introduced into by knitting cam, introduce in the mode of the pinhock bar further being introduced and keep after the stocking yarn, further cutter bar being introduced and cut off stocking yarn.

In addition, in the present invention, it is characterized in that, aforementioned knitting cam comprises: make aforementioned knitting needle outstanding rise cam and intermediate cam, outstanding knitting needle is incorporated into the centre pilot triangle of yarn feeding position, the stitch cam that the knitting needle that will utilize the centre pilot triangle to introduce is further introduced

Aforementioned introducing selection mechanism comprises the spring that aforementioned pinhock bar is loaded to incoming direction, after rise cam, introduces the pinhock bar with spring, be incorporated into the pinhock bar on the aforementioned cutter bar after, make the stitch cam effect, introduce.

In addition, in the present invention, it is characterized in that, aforementioned introducing selection mechanism, loop density is that 0 stroke is compared when utilizing aforementioned stitch cam to carry out the introducing of knitting needle, carries out the introducing of aforementioned cutter bar with bigger stroke.

In addition, in the present invention, it is characterized in that, aforementioned knitting cam comprises: make aforementioned knitting needle outstanding rise cam and intermediate cam, outstanding knitting needle is incorporated into the centre pilot triangle of yarn feeding position, the stitch cam that will further be introduced by the knitting needle that the centre pilot triangle is introduced

Aforementioned introducing selection mechanism comprises the spring that aforementioned pinhock bar is loaded to incoming direction, after the centre pilot triangle, introduce the pinhock bar with spring, aforementioned cutter bar does not work to stitch cam, but affact be arranged on stitch cam after move on the needle clearing cam of side and introduce.

In addition, in the present invention, it is characterized in that aforementioned drive position switching mechanism comprises being arranged on one of aforementioned cam carrier or aforementioned thread-carrier, the drive pin that outstanding state that can the subtend opposite side carries out multiple switching,

On in this cam carrier or this thread-carrier another, be provided with drive pin cooperates, can be according to the kind change of the outstanding state that drives pin recess with respect to the thread-carrier drive position of cam carrier.

According to the present invention, because when braiding, with with knitting needle from needle-bar is projected into most external, the corresponding to thread-carrier of half-way of the knitting cam that is introduced into is subsequently driven timing, knitting needle when being altered to braiding when stocking yarn keep to cut off is projected into from needle-bar near the position on the top of outermost knitting cam, so, be loaded in the knitting cam that drives knitting needle on the cam carrier and drive cutter bar and pinhock bar on the end that is arranged on needle-bar even utilize, also can add enough surpluses, thread-carrier by the time can not collide.Because knitting cam also is used to the driving of cutter bar and pinhock bar, so, can be with the cam carrier miniaturization.

In addition, according to the present invention, even utilize knitting cam to drive the cutter bar of comparing necessary increasing advance and retreat stroke with knitting needle, owing to make loop density set the triangle action of usefulness, strengthen the advance and retreat stroke of cutter bar, so, even utilize knitting cam, also can obtain enough advance and retreat strokes.

And then, according to the present invention, drive the position switching mechanism owing to utilize, will be for cam carrier the drive position of thread-carrier, when braiding, switch to consistent with the half-way of the triangle that knitting needle is drawn in after needle-bar is projected into most external, when stocking yarn keep to cut off, switch near the position on knitting needle with will weave the time is projected into outermost knitting cam from needle-bar the top consistent, so, the knitting cam that can utilize knitting needle to drive usefulness drives cutter bar and pinhock bar, special-purpose triangle needn't be set, thereby can seek to reach miniaturization.Owing to utilize to introduce the state that makes it to go out and be introduced into knitting cam is introduced in selection mechanism from needle-bar is prominent cutter bar and pinhock bar, after the pinhock bar further being introduced and is kept stocking yarn, further cutter bar is introduced and is cut off stocking yarn, so, can carry out the maintenance and the cut-out of stocking yarn with appropriate timing.

In addition, according to the present invention, owing to can carry out the introducing of cutter bar in the position of leaving rise cam, so, even a plurality of pinhock bars are set, also can utilize cutter bar to carry out the cut-out of stocking yarn utilizing after selected pinhock bar keeps stocking yarn reliably.

In addition, according to the present invention, rise cam in utilizing knitting cam and intermediate cam make pinhock bar and cutter bar give prominence to and accept the supply of stocking yarn from needle-bar, with being incorporated into that the centre pilot triangle carries out with when the introducing of suitable position, knitting needle yarn feeding position finishes, can utilize spring that the pinhock bar is retreated in the needle-bar, keep stocking yarn.

In addition, according to the present invention, for example, can be by changing overhang, and change outstanding drive pin, switch the kind of the outstanding state that drives pin, can be when braiding and stocking yarn switch the drive position of thread-carrier when keeping cutting off with respect to cam carrier.

Description of drawings

Fig. 1, be expression keeps shearing device 1 as the stocking yarn of a kind of form of implementation of the present invention integrally-built plane.

Fig. 2, be the plane that the stocking yarn of presentation graphs 1 keeps the part-structure of shearing device 1.

Fig. 3, be the side cutaway view of the maintaining part 3 of Fig. 1.

Fig. 4, be the side cutaway view of the maintaining part 3 of Fig. 1.

Fig. 5, be the side cutaway view of the cut-out portion 4 of Fig. 1.

Fig. 6, be the side cutaway view of the cut-out portion 4 of Fig. 1.

Fig. 7, be the plane of configuration that expression is arranged on the cam mechanism on the cam carrier 38.

Fig. 8, be that expression makes intermediate cam 44b and centre pilot triangle 44c affact on the protuberance 24 of pinhock bar 7 of Fig. 3 and Fig. 4, keeps the plane and the side view of the structure used from the stocking yarn of thread-carrier 46 supplies.

Fig. 9, be that expression makes intermediate cam 44b and centre pilot triangle 44c affact on the protuberance 31 of cutter bar 27 of Fig. 5 and Fig. 6, be used to cut off from the plane and the side view of the structure of the stocking yarn of thread-carrier 46 supplies.

Figure 10, be the flow chart of the simple operation cut off of maintenance that expression uses the stocking yarn of Fig. 1 to keep shearing device 1 to carry out stocking yarn.

Figure 11, be the example of expression for the switching mechanism 49 of Fig. 1, the diagram of the structure of its major part.

Figure 12, be the another one example of expression for the switching mechanism 49 of Fig. 1, the diagram of the structure of its major part.

Figure 13, be expression as further another form of implementation of the present invention, when using latch needles, be arranged on the plane of the configuration of the cam mechanism on the cam carrier 108 as knitting needle.

Figure 14, be the plane that stocking yarn keeps the simple structure of shearing device in the expression prior art.

Figure 15, be the side cutaway view of structure of the maintaining part of expression Figure 14.

Figure 16, be the side cutaway view of structure of the cut-out portion of expression Figure 14.

Figure 17, be that expression makes stocking yarn shown in Figure 14 keep the plane of configuration of cam mechanism of the cam carrier of shearing device action.

The specific embodiment

Below, utilize Fig. 1～Figure 13 that various form of implementation of the present invention is described.At each figure, to the part of part correspondence of explanation formerly, pay identical reference number, omit its repeat specification.

Fig. 1～Fig. 7 represents to keep as the stocking yarn of a kind of form of implementation of the present invention the summary structure of shearing device 1.Fig. 1 is the general structure that the stocking yarn represented in plan view keeps shearing device 1, and Fig. 2 represents to be provided with the end sections of needle-bar 2 that stocking yarn shown in Figure 1 keeps the major part of shearing device 1 enlargedly.Stocking yarn keeps shearing device 1 to be arranged on the end of needle-bar 2, for example, comprises four groups of maintaining parts 3 and one group of cut-out portion 4.Maintaining part 3 and cut-out portion 4 are configured in respectively in the gathering sill 6 between the flat board 5 that equally spaced is arranged on the needle-bar 2.The left and right directions that makes Fig. 1 and Fig. 2 be parallel to that positive a pair of needle-bar 2 dispose from top view along fore-and-aft direction and with respect to needle-bar 2 between the tooth mouth be the V-type straight-bar machines of inverted v-shaped tilted configuration when observing from the side, stocking yarn keeps shearing device 1 for example to be configured in the right-hand member of preceding needle-bar.Fig. 3 and Fig. 4 represent the side cross-section structure of maintaining part 3, and Fig. 5 and Fig. 6 represent the side cross-section structure of cut-out portion 4, wherein, for convenience of explanation, will be with respect to the advance and retreat direction of tooth mouth 100 as horizontal direction.But needle-bar 2 tilts in the V-type straight-bar machines, and the median surface 100a before and after making between needle-bar is actually vertical.Fig. 7 represents to be located at the configuration of the cam mechanism on the cam carrier.

Fig. 3 represents to keep with maintaining part the state of stocking yarn, and Fig. 4 represents stocking yarn is supplied to the state of maintaining part.As shown in Figures 3 and 4, maintaining part 3 has the pinhock bar 7 that can be inserted in the gathering sill 6 with being free to slide.Pinhock bar 7 has pinhock 8 on the front end of tooth mouth 100 sides, its rear portion is provided with protuberance 24 on the rubber-like shank, so that can haunt on the upper surface of gathering sill 6.In gathering sill 6, the upside at the rear portion of pinhock bar 7, the configuration pin shank is selected push jack 9.The rear end of pinhock bar 7 is fixed with the front end of spring 11, the rear end of this spring 11 be fixed on needle-bar 2 support 10 in aggregates on.Spring 11 loads in the mode that pinhock bar 7 is introduced in the needle-bar 2.Above pinhock bar selection push jack 9, pinhock bar selector 12 is set.Pinhock bar selector 12, its front end can select the protuberance 13 of push jack 9 to contact with the pinhock bar, has protuberance 14,15,16.

Middle protuberance 16 is arranged on four different positions, so that selected with actuator 17 by needle selection shown in Figure 7.Needle selection has with actuator 17 can be with four swing sheet 18a, 18b, 18c, the 18d of electromagnetic mode action.The protuberance 16 of pinhock bar selector 12 is used to select, and to correspond respectively to the mode of four swing sheet 18a, 18b, 18c, 18d, is separately positioned on the different position of four groups of maintaining parts 3.Fig. 3～flat metal silk 19a, 19b and metal tape 20 shown in Figure 6, along the direction perpendicular to paper, promptly the length direction of needle-bar 2 runs through dull and stereotyped 5.As shown in Figures 3 and 4, flat metal silk 19a becomes the retainer that the pinhock bar is selected the going-back position of push jack 9, and flat metal silk 19b selects the triangular facet 9a of push jack 9 to contact with the pinhock bar, and the protuberance 24 of pinhock bar 7 is sunk in the gathering sill 6.Metal tape 20, restriction pinhock bar selector 12 makes it not float above gathering sill 6.Flat metal silk 19a is coupled in the depressed part 21 of being located at pinhock bar selector 12 downsides, becomes the fulcrum of swing displacement.

As Fig. 5 and shown in Figure 6, in cut-out portion 4, cutter bar 27, cutter bar select push jack 28 and cutter bar selector 29 to be inserted in the gathering sill 6.The front end of cutter bar 27 is bent into hook-shaped, is provided with cutting edge 30.Cutter bar 27, the first half 27a and the latter half of 27b branch that will have cutting edge 30 are opened manufacturing, with its use that combines.Latter half of 27b and cutter bar at cutter bar 27 are selected on the push jack 28 protuberance 31,32 to be set respectively.As shown in Figure 5, flat metal silk 19b selects the triangular facet 28a of push jack 28 to contact with cutter bar, and the protuberance 31 of the latter half of 27b of cutter bar 27 is sunk in the gathering sill 6.In cutter bar 27, near the top of the flat board 5 at the back side that connects cutting edge 30, counteredge 33 is set, utilize counteredge 33 and cutting edge 30 to shear stocking yarns, carry out the cut-out of stocking yarn.Cutter bar selector 29, the same with pinhock bar 12 basically, have three protuberances 14,15,16.Protuberance 16 is arranged on corresponding on one of them of the position of aforementioned four swing sheet 18a, 18b, 18c, 18d.

As shown in Figure 1, cam carrier 38 is led by guide rail 37, can move back and forth along the length direction of needle-bar 2.On cam carrier 38, be mounted with knitting cam 39.As shown in Figure 7, cam carrier 38 on the base plate 40 of supporting knitting cam 39, disposes actuator 17, selector respectively and stretches out triangle 41a, selector elevating cam 41b, selector guiding triangle 42, guiding triangle 43.Knitting cam 39 is provided with rise cam 44a in central authorities, and intermediate cam 44b and centre pilot triangle 44c are provided with stitch cam 45 in both sides.Fig. 1, Fig. 3～thread-carrier 46 shown in Figure 6, near the top of intermediate cam 44b and centre pilot triangle 44c, that is, near the A place, position the center line 39a of knitting cam 39 utilizes knitting cam 39 to supply stocking yarn 48 on pinhock bar 7 that enters tooth mouth 100 sides and cutter bar 27.When cam carrier 38 along the needle-bar 2 of Fig. 1 for example to right-hand when moving, making knitting needle 47 to carry out braid movement, drive thread-carrier 46, be displaced to position, the downstream Z of moving direction at position A, on knitting needle 47, supply stocking yarn from the center line 39a of knitting cam shown in Figure 7 39.

As shown in Figure 1, relevant with cam carrier 38, switch the switching mechanism 49 of the drive device of thread-carrier 46, for example in the V-type straight-bar machines, be arranged on connection be located at respectively before and after on the draw-off mechanism bridge shape bar 50 between the cam carrier 38 on the needle-bar.Switching mechanism 49 switches respectively, makes that thread-carrier 46 is in the position of the thread-carrier 46a shown in the solid line when making stocking yarn keep shearing device 1 action, that is, and and near the position the center line 39a of knitting cam 39; When knitting needle 47 braidings, be in the thread-carrier 46b shown in the imaginary line, the position of 46c, drive thread-carrier 46.With two positions shown in the imaginary line,, select the downstream of the center line 39a of knitting cam 39 according to the moving direction of cam carrier 38.That is, cam carrier 38 when mobile, switches to the position of thread-carrier 46b to right-hand.In the V-arrangement straight-bar machines, thread-carrier 46 can move along the carrier rod of the top that is erected at tooth mouth 100, and carrier rod is provided with a plurality of, adopts the structure of selecting to use one of them mostly.Stop in the end of needle-bar 2 in case be used in the thread-carrier 46 of the braiding of one or more rows, when using other thread-carrier, make stocking yarn keep shearing device 1 action.

When cam carrier 38 passes through the end of needle-bar 2, when the swing sheet 18a, 18b, 18c, the 18d that optionally make actuator 17 keep out of the way, when making stocking yarn keep 1 pair of stocking yarn action of shearing device, at first, after the selection that begins cut-out portion 4, the selection of beginning maintaining part 3.Make non-selected other swing sheet 18a, 18b, 18c, 18d outstanding.Make under both situations of moving together of cut-out portion 4 and maintaining part 3, when the position consistency of the protuberance 16 of the position of the protuberance 16 of cutter bar selector 9 and selected pinhock bar selector 12, corresponding swing sheet 18a, 18b, 18c, 18d are kept out of the way.In the position of the protuberance 16 of the position of the protuberance 16 of cutter bar selector 9 and selected pinhock bar selector 12 when inconsistent, swing sheet 18a, 18b, 18c, 18d corresponding to both are kept out of the way, after cut-out portion 4, make swing sheet 18a, 18b, 18c, 18d outstanding corresponding to cut-out portion 4.

Utilize the selecting mechanism of actuator 17, be the protuberance used for the needle selection of selecting knitting needle, make it to be in the A position, the H position, or a position in the B position is provided with.The A position is corresponding to tuck, and the H position is corresponding to braiding, and the B position is corresponding to flotation line.Keep in the shearing device 1 at stocking yarn, the selecting mechanism that utilizes knitting needle to use is selected, and makes the protuberance 13 of pinhock bar 9 and the protuberance 32 of cutter bar push jack 28 to be in the A position, and the H position is on the position in the B position.

In Fig. 7, describe for the situation of cam carrier 38 when from left to right direction moves, makes the stocking yarn of Fig. 1 to cut off holding device 1 action.At first, the guiding triangle 43 on right side that becomes Fig. 7 of reach side affacts respectively on the protuberance 24,31, and pinhock bar 7 and cutter bar 27 are lowered to the rear end in the gathering sill 6.The selector guiding triangle 42 that becomes the reach side affacts respectively on the protuberance 14, and pinhock bar selector 12 and cutter bar selector 29 are depressed on the back-end location.Pinhock bar selector 12 and cutter bar selector 29, in the x position of Fig. 7, the selected device of its device afterbody stretches out on the triangle 41a and pushes away.As swing sheet 18a, 18b, 18c, when 18d keeps out of the way, the afterbody of pinhock bar selector 12 and cutter bar selector 29 remain on protuberance 16 not with swing sheet 18a, 18b, 18c, 18d contacts, protuberance 15 floats from gathering sill 6 position.When the afterbody of selector 12 and cutter bar selector 29 when gathering sill 6 floats, protuberance 15 is subjected to the effect of selector elevating cam 41b, pinhock bar selector 12 and cutter bar selector 29 enter tooth mouth 100 sides.Enter by this, the pinhock bar select push jack 9 and cutter bar select push jack 28 by on push away, that removes each triangular facet 9a, 28a and flat metal silk 19b cooperates pinhock bar 7 and cutter bar 27, its protuberance 24,31 floats from gathering sill 6, is subjected to the effect of knitting cam 39 respectively.

At first, protuberance 24,31 enters tooth mouth 100 sides by the effect of rise cam 44a and intermediate cam 44b.After stocking yarn was accepted in the A position, along with protuberance under the effect of centre pilot triangle 44c 24,31 drops to the B position, pinhock bar 7 and cutter bar 27 also retreated in the gathering sill 6 from tooth mouth 100.In the B position, pinhock bar 7 is retreated by spring 11 tractions, the stocking yarn clamping is remained between the front end and pinhock 8 of flat board 5.Because cutter bar 27 is not pulled, thereby in the needle-bar 2 that stands fast, so, up to contacting, continue to keep outstanding state with the downward inclined-plane 45a of stitch cam 45 always.When after centre pilot triangle 44c finishes when keeping maintaining part 3 shearing device 1 and the distance between the cut-out portion 4 to compare enough greatly with the downward inclined-plane 45a contact distance of stitch cam 45 and stocking yarn, utilize stitch cam 45, cutter bar 27 is left behind.But, in order to realize compact knitting cam 39, shorten this distance, in the row that the next one returns stitch cam is affacted on the protuberance 31, cutter bar 27 is left behind.Perhaps, do not contact, make cutter bar select the protuberance 32 of push jack 28 to sink with eedle presser 32a with stitch cam 45, the protuberance 31 of cutter bar 27 is sunk in the gathering sill 6, make it, utilize the downward inclined-plane 43a of follow-up inclination triangle 43 that cutter bar 27 is left behind by stitch cam 45.

For example, as the knitting needle 47 of Figure 1 and Figure 2, when using compound needle, as shown in Figure 7, nook closing member triangle 101 is set on cam carrier 38.But the feature of compound needle is, as a whole, utilizes the stroke of braid movement of the knitting needle 47 that knitting cam 39 carries out little, makes knitting cam 39 miniaturizations.In the braid movement of knitting needle 47, introduce knitting needle when utilizing stitch cam 45 online circles to form.On stitch cam 45, have the leave behind loop density of several millimeter of knitting needle is adjusted function.In the adjustment of loop density, as the minimal coil density value of introducing knitting needle, the reference position of stitch cam that loop density is become at 0 o'clock moves stitch cam 45 as benchmark.In the loop density adjustment process in the braid movement of knitting needle 47, can adjust the length of coil.In order to utilize loop density is leave behind cutter bar 27 and cut off stocking yarn of the stitch cam 45 of 0 state, because the stroke deficiency, so utilize loop density to adjust function, the part of supplemental stroke deficiency.

In the knitting cam 39 of Fig. 7, can make protuberance 24 slide displacement on two position H1, H2 of pinhock bar.In addition, for the protuberance 31 of cutter bar 27, can make it slide displacement on four position H1, H2, H3, H4.The position of H1 is corresponding to the knitting position as maximum in-position.The position of H2 is the position that utilizes selector guiding triangle 44c to descend.The position of H3 is that to set stitch cam 45 for fibre density be 0 o'clock down position.The position of H4 is the down position when setting the loop density of regulation on stitch cam 45.Pinhock bar 7 and cutter bar 27 getting the hang of when Fig. 4 and Fig. 6 represent respectively that protuberance 24,31 enters the position of H1 to tooth mouth 100.

Fig. 8 represents to make intermediate cam 44b and centre pilot triangle 44c to affact on the protuberance 24 of pinhock bar 7, keeps the structure of being used by the stocking yarn of thread-carrier 46 supplies.Fig. 8 (a) expression plan view state, Fig. 8 (b) expression side-looking state.As shown in Figures 3 and 4, the rear end of pinhock bar 7 is drawn by spring 11.If utilize intermediate cam 44b and centre pilot triangle 44c to make pinhock 8 enter tooth mouth 100, the supply of the stocking yarn that acceptance is carried out from thread-carrier, after the guiding of being undertaken by intermediate cam 44b and centre pilot triangle 44c finishes, utilize spring 11 that pinhock 7 is retreated, then can keep stocking yarn.

Fig. 9 represent to be used to make intermediate cam 44b and centre pilot triangle 44c affact cutter bar 27 protuberance 31, cut off from the structure of the stocking yarn of thread-carrier 46 supplies.Fig. 9 (a) expression plan view state, Fig. 9 (b) expression side-looking state.Shown in Fig. 9 (b), cutter bar 27 is divided into first half 27a and latter half of 27b with cutting edge 30 and makes, and they are used in combination.First half 27a for example uses the good material of sharpness of the cutting edge 30 of hard such as high-speed steel.The material that latter half of 27b uses and knitting needle 47 is same.When knitting needle 47 also is divided into first half and latter half of manufacturing, can be shared latter half of.As previously described, owing to utilizing rise cam 44a, in the stroke that intermediate cam 44b and centre pilot triangle 44c obtain, cutter bar 27 can not cut off action fully, so, utilize fibre density to adjust function.In Fig. 7, when utilizing the downward inclined-plane 43a of guiding triangle 43, can select the A position with selecting mechanism, utilize eedle presser 32a to make cutter bar select the protuberance 32 of push jack 28 to sink in the gathering sill 6, stitch cam 45 does not affact on the protuberance 31 of cutter bar 27.

Figure 10 represents to use the stocking yarn of Fig. 1 to keep shearing device 1 to carry out the simple operation of the maintenance cut-out of stocking yarn.Operation is from step s0, in step 1, the cam carrier 38 that drives thread-carrier 46 moved back and forth along the length direction of needle-bar 2, carries out the braiding of the row of knitted fabric.The knitted fabric of braiding, in advance as data programization, according to program, cam carrier 38 one sides move a making knit fabric.At step s2, in next row, judge whether to be necessary to change the thread-carrier 46 of drive etc., whether be necessary to make stocking yarn to keep shearing device 1 action.When there is no need to make stocking yarn keep shearing device 1 action, return step s1, continue the braiding of row.

Be judged as when being necessary to make stocking yarn to keep shearing device 1 action at step s2, judge in step s3 whether cam carrier 38 is in the state that moves to left that leaves stocking yarn maintenance shearing device 1.When not being when moving to left,, also carry out the row that moves to left of the sky that does not weave even in step s4, drive thread-carrier 46.Be judged as when moving to left at step s3, perhaps in step s4, through after the ceases to be busy circle line that moving to left, in step s5, make switching mechanism 49 actions, so that drive position with thread-carrier 46, the position of the braiding usefulness of representing with imaginary line as thread-carrier 46c from figure switches to the position that usefulness is cut off in the maintenance represented with solid line as thread-carrier 46a.In step s6 in order to drive thread-carrier 46 and not making knitting needle 47 action, provide the instruction that makes the drive thread-carrier that cam carrier 38 moves to right.In step s7, judge whether to arrive the part that does not dispose knitting needle 47 in the end of needle-bar 2.If do not arrive, then continue to move to right, till arriving this part.

In step s7, when cam carrier 38 arrives the end of needle-bar 2, in step s8, select cutter bar 27.Make actuator 17 actions by mode, thereby select, make cutter bar 27 actions, so that carry out the cut-out of stocking yarn with the swing sheet 18a of the position consistency of optionally introducing and be arranged on the protuberance 16 on the cutter bar selector 29,18b, 18c, 18d.At step s9, to select mode, make actuator 17 actions corresponding to the protuberance 16 of employed pinhock bar 7, optionally introduce swing sheet 18a, 18b, 18c, 18d.If selected cutter bar 27 and pinhock bar 7, then along with the moving of cam carrier 38, cutter bar 27 at first enters tooth mouth 100 sides, and secondly, pinhock bar 7 enters tooth mouth 100 sides, and thread-carrier 46 is by its inboard stocking yarn of catching.If utilize centre pilot triangle 44c that pinhock bar 7 is retreated from tooth mouth 100, then retracted by spring 11, carry out the maintenance of stocking yarn.Because cutter bar 27 is not drawn by spring 11, so be in stocking yarn is clamped in the degree that keeps between cutting edge 39 and the counteredge 33, be unlikely to cut off.

In the step s10 that the next one moves to left, utilize stitch cam 45 to carry out the loop density adjustment.In step s11, cam carrier is moved to left, when only selecting cutter bar 27 in step s12, stitch cam 45 affacts on the protuberance 31 of cutter bar 27 in step s12, and cutter bar 27 is introduced into needle-bar 2, carries out the cut-out of stocking yarn.In step s13, confirm that the cut-out of stocking yarn finishes, in step s14, finish the action that stocking yarn keeps shearing device 1.

Figure 11 represents the simple structure about an example of switching mechanism shown in Figure 1 49.Realizations such as actuator 105 usefulness solenoids can divide Three Estate to switch the overhang that drives pin 106 at least.Driving pin 106 cooperates with mating component 107 under outstanding state.On mating component 107, form cooperating recesses 107a, according to the overhang that drives pin 106, can cooperate with different position relations.Actuator 105 is arranged on 38 sides such as draw-off mechanism bridge shape bar 50 cam carriers such as grade, and mating component 107 is arranged on thread-carrier 46 sides.Shown in Figure 11 (a), when moving to left, no matter the overhang of drive pin 106 how, drives the position all equally.When moving to right, shown in Figure 11 (b), when braiding, dwindle the overhang that drives pin 100, shown in Figure 11 (c), when stocking yarn keeps cutting off, strengthen the overhang that drives pin 106.

Figure 12 represents the structure of the part that the drive position switching mechanism as another example of switching mechanism shown in Figure 1 49 works briefly.This structure is applicable to, when cam carrier 128 when the length direction of needle-bar moves, the situation when selecting and driving along yarn dispenser device 129 that the carrier rod that is suspended on tooth mouth top moves.On yarn dispenser device 129, cooperating recesses 130 is set, cooperate with the drive pin 131,132 that haunts from cam carrier 128.When braiding, haunt by making a drive pin, can carry out the selection of yarn dispenser device 129, reach the location of consistently carrying out thread-carrier with the moving direction of cam carrier 128.That is, at the state that moves to left shown in (a), and the state that moves to right (b), the position of thread-carrier can be switched to the position of the shoulder in downstream from the summit of knitting cam.When making stocking yarn shown in Figure 1 keep shearing device 1 action, shown in (c), making second, to drive pin 132 outstanding, and the drive position of yarn dispenser device 129 is switched near the summit of knitting cam.In addition, (a), the drive pin 132,131 of the dotted line shown in (c), even expression intactly makes it outstanding, also not influence.

Also there is the belt drives utilized to carry out the straight-bar machines that moves of thread-carrier.In such straight-bar machines, owing to can switch the timing of moving of thread-carrier arbitrarily, so, the drive timing that also can switch thread-carrier, the feasible braiding that continues row is carried out the maintenance of stocking yarn and is cut off in same row.

Utilize aforesaid drive position switching mechanism to switch, when braiding, the drive position that makes the relative cam carrier of thread-carrier is with to make knitting needle be projected into the shoulder position midway of the knitting cam of introducing after the most external from needle-bar consistent, when stocking yarn keeps cutting off, the knitting needle of the drive position that makes the relative cam carrier of thread-carrier when making braiding is projected on the top of outermost knitting cam consistent near the position from needle-bar, therefore, can drive the knitting cam driving cutter bar 27 and the pinhock bar 7 of usefulness with knitting needle.Owing to special-purpose triangle can be set, so can reach the miniaturization of cam carrier.Because by introducing selection mechanism, with further introduce pinhock bar 7 keep stocking yarns after, further introduce cutter bar 27 and cut off the mode of stocking yarns, introducing is in knitting cam and makes it from needle-bar outstanding and the cutter bar 27 and the pinhock bar 7 of the state introduced, so can carry out the maintenance and the cut-out of stocking yarn in appropriate timing.

As mentioned above, in this form of implementation, cam carrier 38 is moved along the length direction of the needle-bar 2 of the straight-bar machines of a plurality of knitting needles 47 of configuration, one side drives knitting needle 47 with the knitting cam 39 that is loaded on the cam carrier 38, one side is supplied stocking yarns from the thread-carrier 46 that drives at cam carrier 38 to knitting needle 47, the row of making knit fabric is utilized the cutter bar 27 and the pinhock bar 7 that are arranged on the needle-bar end, keeps being breaking at obsolete stocking yarn when next time weaving.Switching mechanism 49, as driving the position switching mechanism, play following switching effect, promptly, when braiding, the drive position with respect to cam carrier 38 of thread-carrier 46 is switched to make knitting needle 47 be projected into the position Z midway of the knitting cam of introducing after the most external 39 from needle-bar 2 consistent, when stocking yarn keep to cut off, near the position A unanimity switching on knitting needle 47 when making braiding is projected into outermost knitting cam 39 from needle-bar 2 the top with respect to the drive position of cam carrier 38 thread-carrier 46.Actuator 17 plays a part as keeping selection mechanism, can select following state, promptly, knitting cam 38 is affacted on cutter bar 27 and the pinhock bar 7, make cutter bar 27 and pinhock bar 7 from needle-bar 2 outstanding after, respectively so that cutter bar 27 is incorporated in the needle-bar 2 with the degree that is unlikely to cut off stocking yarn, pinhock bar 7 is not incorporated into the state that the mode in the needle-bar 2 drives to reach the degree that keeps stocking yarn, and, knitting cam 39 is affacted on cutter bar 27 and the pinhock bar 7, do not carry out the state that cutter bar 27 and pinhock bar 7 are advanced and retreat from needle-bar 2.Spring 11 and stitch cam 45 or guiding triangle 43, play a part to introduce selection mechanism, select by actuator 17, with further introducing pinhock bar 7 and keep after the stocking yarn, the modes of stocking yarn are further introduced and cut off to cutter bar 27, introduce the cutter bar 27 and the pinhock bar 7 of the outstanding and state introduced from needle-bar 2 that makes it by knitting cam 39.

Figure 13 is as further another form of the present invention, and the knitting cam 109 that latch needles is used is loaded on the cam carrier 108, with latch needles knitting cam 109 driving needle shanks 7 and cutter bar 27.Latch needles is configured on the base plate 110 of cam carrier 108 together with knitting cam 109 and other triangle, includes rise cam 114a, intermediate cam 114b, centre pilot triangle 114c, and stitch cam 115.In latch needles, because being accompanied by the knocking over of the stocking yarn when weaving, the needle latch of front end opens and closes, so the stroke of advance and retreat increases.For the action of pinhock bar 7, the situation during with compound needle shown in Figure 7 is substantially the same.For cutter bar, owing in knitting cam 109, obtain enough strokes, so, can cut off stocking yarn in the position of loop density 0.Utilizing latch needles, be under the situation of needle latch pin, in Figure 13, if between centre pilot triangle 114b and stitch cam 115, introduce pinhock bar 7 earlier and keep stocking yarn, simultaneously, in order to make it to cooperate with stitch cam 115, the protuberance 31 of cutter bar 27 is sunk in the gathering sill 6, make it by stitch cam 115, the downward inclined-plane 113a that is coupled to guiding triangle 113 goes up and introducing cutter bar 27, can cut off stocking yarn.In addition, the protuberance 31 with cutter bar 27 is not coupled to the mechanism that evergreen tree 115 makes it to pass through, and can be implemented with known selecting mechanism.That is, arrive the position on the introducing inclined-plane of stitch cams 115,, can protuberance 32 be sunk in the gathering sill 6 in this position by selecting the protuberance 32 of push jack 28 to press to the interior direction of gathering sill 6 cutter bar with eedle presser 32a at protuberance 3.Thereby, can keep, cut off stocking yarn expeditiously in same row.

Claims (7)

1. a stocking yarn keeps cutting-off method, cam carrier is moved along the length direction of the needle-bar of the straight-bar machines of a plurality of knitting needles of configuration, the knitting cam that one side utilization is loaded on the cam carrier drives knitting needle, one side is supplied stocking yarn from the thread-carrier that drives on the cam carrier to knitting needle, the row of making knit fabric is utilized cutter bar and the pinhock bar be located at the needle-bar end, keeps in the braiding of next row and cuts off no stocking yarn, it is characterized in that

When braiding, with with knitting needle from needle-bar is projected into most external, the corresponding to thread-carrier of half-way of the knitting cam that is introduced into is subsequently driven timing, when stocking yarn keeps cutting off, be altered near the position on knitting needle with when braiding is projected into outermost knitting cam from needle-bar the top

Utilize knitting cam to drive respectively, make cutter bar and crochet hook bar give prominence to and introduce needle-bar from needle-bar.

2. the stocking yarn shown in claim 1 keeps cutting-off method, it is characterized in that, utilizing knitting cam loop density to be set with the triangle action when the outstanding cutter bar of needle-bar is introduced needle-bar, strengthens the advance and retreat stroke of cutter bar.

3. a stocking yarn keeps shearing device, device makes cam carrier move along the length of the needle-bar of the straight-bar machines of a plurality of knitting needles of configuration, the knitting cam that one side utilization is loaded on the cam carrier drives knitting needle, one side is supplied stocking yarn from the thread-carrier that drives on the cam carrier to knitting needle, the row of making knit fabric is utilized cutter bar and the pinhock bar be located at the needle-bar end, keeps and is breaking at no stocking yarn in the braiding of next row, it is characterized in that, comprising:

Drive the position switching mechanism, this switching mechanism drives the position with the thread-carrier for cam carrier, when braiding, switch to consistent with the half-way of the knitting cam that knitting needle is drawn in after needle-bar is projected into most external, when stocking yarn keep to cut off, switch near the position on knitting needle with will weave the time is projected into outermost knitting cam from needle-bar the top consistent

Keep cutting off selection mechanism, this selection mechanism can be selected active state and non-active state, drive in the following manner at active state, promptly, knitting cam is affacted on cutter bar and the pinhock bar, make cutter bar and pinhock bar outstanding, afterwards from needle-bar, introduce needle-bar respectively, till promptly using cutter bar to keep stocking yarn also to be unlikely to its cut-out, by pinhock bar maintenance stocking yarn; Under non-active state, knitting cam is affacted on cutter bar and the pinhock bar, thereby do not carry out cutter bar and the outstanding and introducing of pinhock bar from needle-bar,

Introduce selection mechanism, this introduces selection mechanism, under by the active state that keeps cut-out selection mechanism to determine, affact on the cutter bar and pinhock bar of the state that makes it from needle-bar is prominent, to go out and be introduced into by knitting cam, with with after further introducing of pinhock bar and the maintenance stocking yarn, further cutter bar is introduced and cut off the mode of stocking yarn and introduce.

4. stocking yarn as claimed in claim 3 keeps shearing device, it is characterized in that, aforementioned knitting cam comprises: make aforementioned knitting needle outstanding rise cam and intermediate cam, outstanding knitting needle is incorporated into the centre pilot triangle of yarn feeding position, with the further stitch cam of introducing of the knitting needle that utilizes the centre pilot triangle to introduce

Aforementioned introducing selection mechanism comprises the spring that aforementioned pinhock bar is loaded to incoming direction, after rise cam, introduces the pinhock bar with spring, be incorporated into the pinhock bar on the aforementioned cutter bar after, make the stitch cam effect, introduce.

5. keep shearing device as any one described stocking yarn in claim 3 or 4, it is characterized in that, aforementioned introducing selection mechanism, loop density is that 0 stroke is compared when utilizing aforementioned stitch cam to carry out the introducing of knitting needle, carries out the introducing of aforementioned cutter bar with bigger stroke.

6. stocking yarn as claimed in claim 3 keeps shearing device, aforementioned knitting cam comprises: make aforementioned knitting needle outstanding rise cam and intermediate cam, outstanding knitting needle is incorporated into the centre pilot triangle of yarn feeding position, the stitch cam that will further be introduced by the knitting needle that the centre pilot triangle is introduced

Aforementioned introducing selection mechanism comprises the spring that aforementioned pinhock bar is loaded to incoming direction, after the centre pilot triangle, introduce the pinhock bar with spring, aforementioned cutter bar does not work to stitch cam, but affact be arranged on stitch cam after move on the needle clearing cam of side and introduce.

7. keep shearing device as any one described stocking yarn in the claim 3～6, it is characterized in that aforementioned drive position switching mechanism comprises being arranged on one of aforementioned cam carrier or aforementioned thread-carrier, the drive pin that outstanding state that can the subtend opposite side carries out multiple switching

On in this cam carrier or this thread-carrier another, be provided with drive pin cooperates, can be according to the kind change of the outstanding state that drives pin recess with respect to the thread-carrier drive position of cam carrier.

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