JP2011202329A - Yarn carrier for flat knitting machine and flat knitting machine and method for knitting multi-layered knitted fabric - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the interference of a warp with the yarn-feeding port of a yarn carrier, when a multi-layered knitted fabric is knitted.SOLUTION: A warp is fed into the opening of a flat knitting machine, and an inlay yarn and a knitting yarn are fed from the tip yarn-feeding port of the yarn carrier to knit the multi-layered knitted fabric. Each yarn carrier has a guide member stuck out from the yarn carrier to the opening at a place near to the base portion rather than the yarn-feeding port, and the warp is guided on the side opposite to the yarn carrier with the guide member, when seen from the opening.

Description

  The present invention relates to a knitting method of a yarn carrier, a flat knitting machine and a multi-layer knitted fabric, and more particularly to preventing interference between a warp yarn and a yarn carrier.

  Patent Document 1: Special Table 2000-501792A (WO97 / 21860) discloses knitting a multi-layer knitted fabric in which a warp layer and a weft layer are joined with a knitting yarn by a flat knitting machine. In Patent Document 1, the warp is supplied from the supply means above the weft knitting machine to the mouth of the weft knitting machine, and the weft and knitting yarn are supplied from the yarn carrier to the mouth.

  Here, the inventor paid attention to the fact that the yarn feeder at the tip of the yarn carrier interferes with the warp when the yarn carrier is moved. When the warp interferes with the yarn feeder at the tip of the yarn carrier, the warp shifts along the tooth mouth and easily comes into contact with the needles on the needle bed, resulting in difficult knitting. Even if it does not contact the needle, the position of the warp is shifted and the knitted fabric is disturbed.

Special table 2000-501792A

The subject of this invention is providing the yarn carrier which can prevent interference with a warp.
The subject of this invention is providing the flat knitting machine provided with the yarn carrier which can prevent interference with a warp.
Another object of the present invention is to knit a multi-layer knitted fabric without interference between the warp yarn and the yarn carrier.
An additional object of the present invention is to prevent warp warped by the guide member of the yarn carrier from interfering with the needle.
Another object of the present invention is to prevent warp warped by the guide member of the yarn carrier from wrapping around the back surface of another yarn carrier.
An additional object of the present invention is also to allow the yarn carrier to pass through without the guide member interfering between the opposing yarn carriers.

  The yarn carrier for a flat knitting machine of the present invention is a yarn carrier that supplies a knitting yarn or an inlay yarn (weft yarn) from the tip yarn feeder to the tooth mouth of the flat knitting machine, closer to the base of the yarn carrier than the yarn feeder, A guide member that protrudes from the yarn carrier to the side of the mouth and guides the warp passing through the mouth to the side opposite to the yarn carrier when viewed from the mouth is provided.

  The flat knitting machine of the present invention includes at least one needle bed, and uses a space that follows the needle bed tip to form a stitch by a needle that protrudes from the needle bed, and moves along the mouth to feed the tip. In a flat knitting machine comprising a plurality of yarn carriers for supplying knitting yarns or inlay yarns from a yarn mouth to a tooth mouth, and a supply means for supplying warps to the tooth mouth, each yarn carrier is a base of the yarn carrier rather than a yarn feeder. A guide member that protrudes from the yarn carrier toward the mouth of the mouth and guides the warp passing through the mouth to the side opposite to the yarn carrier when viewed from the mouth is provided. The yarn carrier and the flat knitting machine of the present invention can be used for knitting that supplies only warp and knitting yarn and does not supply inlay yarn. In that case, not a multi-layer knitted fabric but a knitted fabric composed of warp and knitting yarn is obtained.

  In the knitting method of the multi-layer knitted fabric according to the present invention, the warp is supplied to the mouth formed of the space following the tip of the needle bed by the supply means, and the inlay yarn is fed from the yarn feeder at the tip of the inlay yarn carrier that moves along the mouth. Knitting yarn is supplied to the mouth from the yarn feeder at the tip of the knitting yarn carrier that moves along the mouth, and a warp layer is formed by forming a stitch from the knitting yarn with a needle in the needle bed. In the knitting method for joining the layers of inlay yarn, each yarn carrier is provided with a guide member that protrudes from the yarn carrier toward the mouth side closer to the base of the yarn carrier than the yarn feeder, and the warp is viewed from the mouth by the guide member. Guided to the opposite side of the yarn carrier.

  In this invention, since the warp is bent to the opposite side of the tooth opening by the guide member of the yarn carrier, the yarn feeder at the tip of the yarn carrier does not interfere with the warp. Therefore, knitting such as a multi-layer knitted fabric becomes easy.

  Preferably, the guide member includes a linear portion parallel to the longitudinal direction of the tooth opening at the center, and guide portions for guiding the warp to the linear portion on the left and right sides of the linear portion. The straight portion is not necessary for the inlay yarn carrier, and the guide portion of the inlay yarn carrier may have an arc shape or the like lacking the straight portion. If there is no straight part, the warp is inclined not only in the direction perpendicular to the longitudinal direction of the tooth mouth in the horizontal plane, that is, in the longitudinal direction of the tooth mouth, but also in the direction in which the needle protrudes and retracts. When the knitting yarn is supplied from the yarn carrier, the knitting yarn is captured by the needle in the needle bed immediately after the traveling direction of the yarn carrier to form a stitch. Here, when the warp is inclined in the longitudinal direction of the tooth opening, troubles such as the needle colliding with the warp or the needle capturing the warp occur. On the other hand, when a straight portion is provided at the center of the end face of the guide member of the yarn carrier for supplying knitting yarn, the warp to be guided is not inclined along the longitudinal direction of the tooth mouth. Therefore, the above trouble can be solved.

  Further preferably, the guide portion has a shape in which the guide of the warp is started from a position farther from the mouth than the yarn carrier. To be away from the mouth means that the guide portion starts from a position farther from the mouth than the yarn carrier in a plan view at the height of the guide member with respect to the straight mouth. When a pair of front and back needle beds are provided, the center of the space between the needle beds is the tooth center line, and the guide is started from a position away from the yarn carrier with respect to the tooth center line. For this purpose, it is preferable to provide a retracted portion on the left and right sides of the guide member that extends to a position farther from the tooth opening than the back surface of the yarn carrier. In this way, the warp warped by another yarn carrier does not wrap around the back surface of the yarn carrier.

Preferably, in the side view of the flat knitting machine, the yarn carriers are arranged on both the left and right sides of the tooth opening, and the heights of the guide members are made different between the left and right yarn carriers. In this way, since the guide member does not interfere between the yarn carriers facing each other, the yarn carriers can be moved so as to cross. Therefore, for example, the yarn carrier can be moved with the yarn carrier for supplying inlay yarn as the leading and the yarn carrier for supplying knitting yarn as the trailing, so that the knitting efficiency can be improved. If the guide members interfere with each other, one course knitting is performed with the yarn carrier for supplying inlay yarn preceding and the yarn carrier for supplying knitting yarn following, and then the yarn carrier for supplying knitting yarn precedes and inlays in the next course. The yarn carrier for supplying yarn is followed.

The figure which shows the knitting principle of a multilayer knitted fabric Figure showing a warp insertion jig The figure which shows the knitting organization of a multilayer knitted fabric The figure which shows the knitting organization which flat knits the knitting yarn The figure which shows the knitting organization which ribs the knitting yarn Side view showing the vicinity of the mouth of the flat knitting machine Plan view showing the vicinity of the mouth of a flat knitting machine Front view of the yarn carrier of the example Photo of the knitted fabric knitted in the example

  In the following, an optimum embodiment for carrying out the invention will be shown. The scope of the present invention should be construed in consideration of the possibility of modification by well-known techniques in the description of the scope of claims.

  An example is shown in FIGS. In the figure, reference numeral 2 denotes a flat knitting machine, which includes, for example, a front needle bed F and a rear needle bed R. However, only the front needle bed F may be provided, or a larger number of needle beds may be provided such as four in the front and rear and up and down directions. . A warp 4 is passed in the vertical direction between the front and back needle beds F and R, an inlay yarn (weft yarn) 6 is supplied by a yarn carrier 10, and a knitting yarn 8 is supplied by a yarn carrier 12. The tooth opening 3 is a space following the tip of the needle bed, and extends at right angles in the horizontal plane in the direction in which the needles of the needle beds F and R protrude and is parallel to the longitudinal direction of the needle beds F and R. When referring to the center of the mouth, it refers to the center of the mouth with respect to the direction of the needle. In addition, the center line of the mouth is at the center of the space between the needle beds F and R, and is a line parallel to the longitudinal direction of the needle beds F and R. The warp 4 is made of, for example, carbon fiber, glass fiber, aramid fiber, etc., and carbon fiber that is particularly strong and difficult to bend is preferable. The inlay yarn 6 is made of glass fiber or aramid fiber, and is particularly preferably an aramid fiber that can be easily refracted. The yarn carrier 10 supplies the inlay yarn 6, but the needles of the needle beds F and R do not perform the knitting operation on the inlay yarn 6. The knitting yarn 8 is supplied from the yarn carrier 12 and is subjected to the knitting operation by the needles of the needle beds F and R to become a stitch (needle loop) and a transition yarn (sinker loop), and the warp yarn 4 and the inlay yarn 6 are connected to each other. .

  FIG. 2 shows a jig 14 for supplying the warp 4. The jig 14 has, for example, a large number of holes, and the warp 4 passes from the top to the bottom and is supplied to the tooth opening 3. In the embodiment, the warp yarn 4 and the inlay yarn 6 are supplied as reinforcing fibers, but the reinforcing fiber can also be supplied obliquely. In this case, for example, the needle bed F, Supply to R. Alternatively, even if the knitted fabric is moved along the longitudinal direction of the needle beds F and R by transferring between the needle beds F and R and racking the needle beds, the reinforcing fibers can be passed diagonally. The plurality of parallel warp yarns 4 form a warp layer, and the plurality of parallel inlay yarns 6 form an inlay yarn layer, and when supplying the yarn diagonally, an oblique yarn layer is added to them. The slanted yarn is arranged in two directions, for example, a direction inclined 45 ° from the horizontal direction and a direction inclined 135 °.

  FIG. 3 shows the structure of the multi-layered knitted fabric. There are a warp 4 layer, an inlay yarn 6 layer, and a stitch 16 layer in order from the top to the bottom of the drawing. There is a layer of the inlay yarn 6 at a position closer to one side from the center of the tooth opening, and the layer of the stitch 16 is on the side farther from the center of the tooth opening than the layer of the inlay yarn 6. The transition yarn 18 between the stitches 16, 16 connects the warp 4 and the inlay yarn 6 to the stitch 16, and the stitch 16 and the transition yarn 18 join the layers of the warp 4 and the inlay yarn 6. Reference numeral 17 denotes a stitch one course before, and the stitch 16 is fixed to the lower side of the inlay yarn 6 in FIG. When the warp 4 is removed from the knitted fabric having the structure shown in FIG. 3, a kind of inlay knitted fabric is obtained. In a normal inlay knitted fabric, a stitch is formed even at the position of the warp 4 in FIG. 3 to form a rib knitted fabric.

  In order to knit the knitted fabric of FIG. 3, for example, the warp 4 is supplied from the jig so as to pass through the center of the mouth, and the yarn carrier for supplying the inlay yarn 6 is moved along the mouth in advance. Inlay yarn 6 is supplied. Next, the yarn carrier for supplying the knitting yarn is moved along the opposite side of the inlay yarn 6 as viewed from the warp yarn 4 (upper side in FIG. 3) in parallel with the tooth opening, and the stitch 16 is formed by the needles on the needle bed. . As described above, the yarn carrier 10 for supplying the inlay yarn precedes, and the yarn carrier 12 for supplying the knitting yarn follows. During one course of the carriage, the inlay yarn 6 can be supplied, the stitch 16 can be knitted, and the warp yarn 4 and the inlay yarn 6 can be knitted. Therefore, it can be efficiently organized. Further, the yarn carrier 10 for supplying inlay yarn and the yarn carrier 12 for supplying knitting yarn are arranged on the left and right sides of the center line of the tooth mouth so as to face each other in a side view of the flat knitting machine. For example, the stitch 16 is formed by selecting a needle on the needle bed and operating the needle between the warp 4 and the warp 4 without operating the needle in front of the warp 4. In addition, when the arrangement | positioning space | interval of a needle | hook is wide, all the needle | hooks can also be operated by arrange | positioning the warp 4 between a needle | hook.

  4 and 5 show the structure of the multilayer knitted fabric. In FIG. 4, the inlay yarn 6 layer is on the front needle bed F side of the warp yarn layer 4, and the stitch 16 layer is on the front needle bed F side. The crossover yarn 18 passes through the rear side of the warp 4, thereby joining the layer of the warp 4 and the layer of the inlay yarn 6 to the layer of the stitch 16. In FIG. 4, for example, a multilayer knitted fabric can be knitted only with the needles of the front needle bed F, and the knitting structure of the stitch 16 is a flat knitting.

  In FIG. 5, a multi-layer knitted fabric is knitted using a rib knitted fabric. There is a layer of warp 4 between the front needle bed F and the rear needle bed R, and a pair of inlay yarns 6 and 7 are arranged on both sides thereof. Further, a pair of knitting yarns 8 and 9 are used as knitting yarns, and these are knitted with ribs. The stitches 16 are formed on the front needle bed F side and the rear needle bed R side by the respective knitting yarns 8 and 9, and the warp yarn 4 and the inlay yarns 6 and 7 are formed in the layer of the stitch 16 by the transition yarns 18 and 19 therebetween. Join.

  In the embodiment, the warp 4 may interfere with the yarn feeder 25 provided on the tip 24 at the tip of the yarn carriers 10 and 12 in the vicinity of the mouth 3. That is, the warp yarn 4 passing up and down the tooth mouth 3 is carried in contact with the yarn carrier 10, 12, particularly the tip 24 at the tip of the yarn carrier 10, 12 in the vicinity of the yarn feeder 25, or The passing position may shift. When the position of the warp 4 is shifted, it may collide with a needle that advances from the needle bed or be captured by the needle, and even if it does not contact the needle, the knitted fabric may be disturbed. A mechanism for preventing the warp 4 from interfering with the yarn feeder 25 at the tips of the yarn carriers 10 and 12 is shown in FIGS.

  As shown in FIGS. 6 to 8, a plate-like guide member 26 is provided on the yarn carriers 10 and 12 to guide the warp 4. As shown in FIG. 6, the needles 20 and 21 protrude from the needle beds F and R, and form stitches by the knitting yarn 8 supplied from the yarn carrier 12. Further, the yarn carriers 10 and 12 have a tip 24 at the tip (FIG. 8), and the inlay yarn 6 and the knitting yarn 8 are supplied through the yarn feeder 25 of the tip 24. The guide member 26 is fixed to the yarn carriers 10 and 12 with a plate-like mounting portion 34 by means of a bolt 36 and a nut 38, and the fixing means is arbitrary. The guide member 26 includes a protruding portion 28 protruding from the yarn carriers 10 and 12 toward the center of the tooth mouth 3, and warps the warp 4 along the end surface of the protruding portion 28 when contacting the warp 4. As a result, the yarn carriers 10 and 12 can pass without causing the warp yarn 4 to interfere with the yarn feeder 25 of the tip 24 and the like.

  As shown in FIG. 7, there is a linear portion 30 formed of a linear end parallel to the tooth opening at the center of the protruding portion 28, and a guide portion 31 that guides the warp yarn to the linear portion 30 on the left and right thereof. The length w of the straight portion 30 is about twice as long as the length of the section in which the needle advances from the needle beds F and R by a carriage (not shown) for operating the needles 20 and 21, and may be shorter. . This length is the length along the tooth opening, and is determined by the product of the needle arrangement pitch and the number of needles that the carriage advances from the needle beds F and R simultaneously. Further, the left and right guide portions 31, 31 are provided with receding portions 32, 32 continuously from the projecting portion 28, and the receding portions 32 have teeth on the back side of the yarn carriers 10, 12 (the surface opposite to the mouth). It is away from the mouth. In the yarn carrier 10 for the inlay yarn 6, the straight portion 30 may not be provided.

  Returning to FIG. 6, the mounting heights of the guide member 26 are made different between the yarn carriers 10, 12 facing each other on the left and right sides of the mouth. For example, several yarn carriers 10 and 12 can be provided on the left and right sides of the row of warps 4 (the center of the mouth), and the yarn carriers on the same side as seen from the rows of warps 4 have the height of the guide member 26 increased. It may be common or different.

  As shown in FIG. 8, there is an entrainment portion 40 at the upper part (base) of the yarn carriers 10 and 12, for example, along the yarn carrier rail (not shown) by the toothed belt 41 and the driven roller 42. Move. The yarn carriers 10 and 12 may be carried by a pin or the like that protrudes and protrudes from a member that moves together with the carriage for operating the needle.

  The operation of the guide member 26 is shown. As shown in FIG. 7, when the yarn carriers 10 and 12 move, the warp 4 comes into contact with the guide portion 31 and is guided so as to warp to the opposite side of the tooth center line 39 as viewed from the yarn carrier, and the straight portion It is guided to the next guide portion 31 through 30. For this reason, as shown in FIG. 6, the contact between the tip 24 and the warp 4 can be prevented.

  When the warp 4 is guided by the guide member 26, the warp 4 is also shifted in the longitudinal direction of the tooth mouth at portions other than the straight portion 30. When the warp 4 is shifted in the longitudinal direction of the mouth, there is a risk of interference with the needles that advance from the needle beds F and R. Here, in the straight portion 30, the warp 4 does not shift in the longitudinal direction of the mouth and thus does not interfere with the needle. In general, several needles advance from the range immediately after the center of the yarn carrier 12 in the movement direction. This section is schematically shown as a semicircle in FIG. Therefore, if the length of the straight portion 30 is at least twice as long as the length of this section, there is no possibility that the warp 4 and the needle inclined in the longitudinal direction of the mouth are in contact with each other. If the tip of the needle does not advance to the vicinity of the tooth center line 39, the needle does not contact the warp 4, so the length of the straight portion 30 may be shorter. Since the needle does not advance below the inlay yarn carrier 10, the straight portion 30 may be provided only on the yarn carrier 12 for knitting yarn.

  When the warp 4 is guided by the straight portion 30, if the yarn carriers 10, 12 cross the opposing yarn carriers 12, 10, the warp 4 may be conveyed to the back of the opposing yarn carriers 12, 10. Therefore, when the left and right retreating portions 32 and 32 are provided so that the guide to the straight portion 30 of the warp 4 starts from a position farther from the center line 39 than the back surface of the yarn carriers 12 and 10, the warp 4 is It is not carried to the back surface of the carriers 12 and 10.

  It is necessary to prevent the guide portion 26 from colliding when the yarn carriers 10 and 12 facing each other cross. Therefore, the guide portion 26 is attached to the yarn carriers 10 and 12 facing each other at different heights.

  Instead of providing the guide member 26, the inventor can also increase the width of the mouth 3 so that the warp 4 does not contact the tip 24 in the vicinity of the tip 24 attached to the tips of the yarn carriers 10 and 12. investigated. However, if this is done, a large stitch is formed, so that the stitch layer is loosened. Accordingly, the warp 4 is warped to the opposite side of the tooth opening by the guide member 26. Further, the inventor also examined rocking the jig 14 between the front needle bed F and the rear needle bed R. For example, when the inlay yarn 6 is supplied by the yarn carrier 10, the jig 14 is swung to the rear needle bed R side so as not to interfere with the warp yarn 14, and the yarn carrier 12 is supplied with the knitting yarn. In order to avoid interference with the warp yarn 4, the jig 14 was swung to the front needle bed F side. However, in this case, a mechanism for swinging the jig 14 in synchronization with the movement of the yarn carriers 10 and 12 is required, and the vicinity of the jig 14 is arranged so that the jig 14 can swing in the opposite direction. It is necessary to shift the passing time between the yarn carrier 10 and the yarn carrier 12. Therefore, the knitting efficiency is reduced.

  FIG. 9 shows a multi-layer knitted fabric knitted in a spiral shape. Here, braided yarns are used as warp yarns and inlay yarns because this is a trial knitted fabric. In FIG. 9, the braided yarn extending from the front and back of the multilayer knitted fabric is a warp yarn, and the braided yarn folded back along the lateral direction of the multilayer knitted fabric is an inlay yarn. The reason why the multi-layer knitted fabric is spiral is that the number of stitches is different between the inside and outside of the knitting width due to turn-back knitting, so the number of stitches is small inside the knitting width and many outside. For this reason, the multi-layer knitted fabric curls the side with few stitches inward and the side with many stitches outward, resulting in the form of FIG. The multi-layer knitted fabric of FIG. 9 has a spiral shape when it is long and a partial shape of the spiral when it is short.

In the embodiment, the following effects can be obtained.
1) There is no possibility that the warp 4 interferes with the tip 24 in the vicinity of the yarn feeder 25.
2) The guide members 26 do not interfere with each other with the yarn carriers 10 and 12 facing each other.
3) When the straight portion 30 is provided, the needles that have advanced from the needle beds F and R do not contact the warp 4.
4) When the left and right retreating portions 32, 32 are provided, the warp 4 is not carried to the back surfaces of the yarn carriers 10, 12.

2 Flat knitting machine 3 Tooth mouth 4 Warp yarn 6, 7 Inlay yarn 8, 9 Knitting yarn 10, 12 Yarn carrier 14 Jig 16, 17 Stitch 18, 19 Transition yarn 20, 21 Needle 24 Tip 25 Yarn feeding port 26 Guide member 28 Projection Part 30 linear part 31 guide part 32 retracting part 34 attaching part 36 bolt 38 nut 39 tooth center line 40 entraining part 41 toothed belt 42 driven roller

F Front needle bed
R Rear needle bed

Claims (8)

In the yarn carrier that supplies knitting yarn or inlay yarn from the tip yarn feeder to the teeth of the flat knitting machine,
A guide member is provided closer to the base of the yarn carrier than the yarn feeder, and guides the warp passing from the yarn carrier to the side of the mouth, and guiding the warp passing through the mouth toward the side opposite to the yarn carrier. Yarn carrier for flat knitting machines.   2. The guide member according to claim 1, wherein the guide member includes a straight portion parallel to the longitudinal direction of the tooth opening at a center, and guide portions that guide warp yarns to the straight portion on the left and right sides of the straight portion. Yarn carrier for flat knitting machines.   The yarn carrier for a flat knitting machine according to claim 1 or 2, wherein the guide portion has a shape in which guide of the warp is started from a position farther from the tooth opening than the yarn carrier. At least one needle bed is provided, and the space following the needle bed tip is used as a mouth to form stitches by needles protruding from the needle bed, and the yarn moves along the tooth mouth to feed the knitting yarn or inlay yarn from the tip yarn feeder. In a flat knitting machine comprising a plurality of yarn carriers to be supplied to the mouth and a supply means for supplying warp to the mouth.
Each yarn carrier is guided closer to the base of the yarn carrier than the yarn feeder, and protrudes from the yarn carrier to the mouth side and guides the warp passing through the mouth to the side opposite to the yarn carrier when viewed from the mouth. A flat knitting machine comprising a member. The flat knitting machine according to claim 4, wherein the yarn carriers are arranged on both the left and right sides of the mouth of the flat knitting machine, and the height of the guide member is different between the left and right yarn carriers.   6. The guide member according to claim 5, wherein the guide member includes a straight portion parallel to the longitudinal direction of the tooth mouth at a center, and guide portions that guide warps to the straight portion on both the left and right sides of the straight portion. Flat knitting machine.   The flat knitting machine according to claim 5 or 6, wherein the guide portion has a shape in which the guide of the warp is started from a position farther from the tooth opening than the yarn carrier. The warp is supplied to the mouth of the space consisting of the space following the needle bed tip by the supply means, the inlay yarn is supplied to the mouth from the yarn feeder at the tip of the inlay yarn carrier moving along the mouth, and along the mouth. A multi-layer knitted fabric that feeds the knitting yarn from the yarn feeder at the tip of the moving knitting yarn carrier to the tooth mouth, forms a stitch from the knitting yarn by the needle of the needle bed, and joins the warp layer and the inlay yarn layer In the organization method,
Each yarn carrier includes a guide member that protrudes from the yarn carrier toward the mouth side closer to the base of the yarn carrier than the yarn feeder, and guides the warp yarn to the opposite side of the yarn carrier when viewed from the mouth by the guide member. A method for knitting a multi-layer knitted fabric, comprising: