JP6854688B2 - Cam system and flat knitting machine - Google Patents

Description

The present invention relates to a cam system and a flat knitting machine that enable two types of plating knitting.

The flat knitting machine includes at least a pair of front and rear needle beds, knitting needles arranged in each of a large number of needle grooves arranged side by side in each needle bed, and a carriage that reciprocates along the length direction of the needle beds. (For example, Patent Document 1). A cam system is mounted on the carriage, and this cam system causes the knitting needles to perform knitting operations such as knitting and tacking. The cam system is equipped with various cams such as needle lasing cams and Toyama cams. The needle lasing cam is a cam in which the knitting bat provided on the knitting needle is advanced toward the tooth opening and the knitting needle is made to perform the knitting operation. The degree cam is a cam that determines the size of the stitch by retracting the knitting bat from the tooth opening and adjusting the pull-in amount of the knitting needle. Determining the size of the stitch by the degree mountain cam is called "degree determination".

Using the flat knitting machine described above, it is possible to perform a knitting called a plating knitting in which two different types of knitting yarns are knitted in parallel. FIG. 6 is a schematic view showing a state of plating knitting on a needle bed 2 including a movable sinker 5 arranged in parallel with each knitting needle 3. As described in Patent Document 1, the movable sinker 5 is provided so as to be swingable in the vertical direction (direction orthogonal to the paper surface) of the needle bed 2, and the entire knitting yarn 8Y (9Y) is on the needle bed 2 side (lower side of the paper surface). It is a member that forms a sinker loop 40 that connects the stitches 4 and the stitches 4 by pressing the stitches so as not to be drawn into the stitches 4.

In the plating knitting shown in FIG. 6, the main yarn 8Y fed from the leading yarn feeding port 8 at the leading position in the knitting direction (left side of the paper surface) and the yarn fed from the trailing yarn feeding port 9 at the trailing position. The knitted fabric is knitted by pulling in the thread 9Y with one knitting needle 3. Since the trailing yarn feeding port 9 is located closer to the knitting needle 3 than the leading yarn feeding port 8, the angle of the auxiliary yarn 9Y extending from the trailing yarn feeding port 9 to the knitting needle 3 is larger than that of the main yarn 8Y, and the main yarn 8Y The thread 9Y is arranged at a higher position than the thread 9Y. Due to the vertical relationship between the main yarn 8Y and the auxiliary yarn 9Y at the time of knitting the knitted fabric, the main yarn 8Y is arranged on the front surface side of the knitted fabric, and the auxiliary yarn 9Y is arranged on the back surface side of the knitted fabric.

Patent Document 2 discloses, in addition to the standard plating knitting in which the main yarn 8Y is arranged on the surface side of the knitted fabric, a technique for performing an inverted plating knitting in which the yarn 9Y is arranged on the surface side of the knitted fabric. There is. In the technique of Patent Document 2, the movable sinker 5 is swung when the main thread 8Y and the thread 9Y are pulled in by the knitting needle 3, and the positions of the main thread 8Y and the thread 9Y are exchanged on the movable sinker 5 to perform reverse play. I'm doing ting.

Japanese Unexamined Patent Publication No. 6-0333348 Japanese Unexamined Patent Publication No. 2016-176159

The knitted fabric knitting method of Patent Document 2 has a problem that yarn breakage is likely to occur during reverse plating knitting. For example, in FIG. 6, when the two stitches 4 and 4 in the figure are knitted by the standard plating knitting, after the determination of the right stitch 4 in which the standard plating knitting is performed is completed, the left stitch 4 is knitted. The degree is decided. However, in the method of Patent Document 2, when the reverse plating knitting is performed, the pulling of the knitting yarn is started at an earlier timing than when the standard plating knitting is performed, and the timing at which the pulling of the knitting yarn is finished (the timing of determining the degree). ) Is also faster than when standard plating is performed (see FIG. 11 of Patent Document 2). Therefore, for example, in FIG. 6, when the right stitch 4 is formed by the standard plating knitting and the left stitch 4 is formed by the inverted plating knitting, the left stitch 4 is determined first. In that case, the sinker loop 40 connecting the two stitches 4 and 4 will be pulled strongly from both sides, and the knitting yarns 8Y and 9Y will be cut, resulting in unstable knitting and deterioration of the quality of the knitted fabric. In some cases.

The present invention has been made in view of the above circumstances, and one of the objects of the present invention is to provide a cam system and a flat knitting machine in which the quality of the knitted fabric is not easily deteriorated even if reverse plating knitting is performed.

The cam system of the present invention
Among the flat knitting machines that knit a knitted fabric with a plurality of knitting needles provided in each of the plurality of needle grooves of the needle bed, the machine is mounted on a carriage that reciprocates on the upper surface of the needle bed along the length direction of the needle bed. It is a cam system,
A needle lasing cam having an ascending slope for raising the knitting bat provided on the knitting needle and advancing the knitting needle toward the tooth opening of the needle bed.
In a cam system having a first descending slope for lowering the knitting bat and a degree cam for retracting the knitting needle from the tooth opening.
Switching between the implementation of standard plating knitting in which the main yarn is arranged on the surface of the knitted fabric rather than the main yarn and the implementation of inverted plating knitting in which the yarn is arranged on the surface of the knitted fabric rather than the main yarn. Sub-route cam to enable and
A route changing presser that acts on the selection bat provided on the knitting needle and is configured to be switchable between an action position in which the knitting bat is submerged on the needle groove side and an action position in which the knitting bat does not act on the selection bat. Prepare,
The sub-route cam
It is arranged between the needle lasing cam and the degree cam on the upper side of the first descending slope, and the protrusion height of the carriage in the thickness direction is lower than that of the degree cam.
The sub-root cam has a second descending slope that lowers the knitting bat before coming into contact with the first descending slope of the sub-root cam, and the end portion of the sub-root cam on the Deyama cam side is the said. It is connected to the first descending slope and
The route change presser sets the protruding height of the knitting bat from the needle bed to be greater than the distance from the upper surface of the needle bed to the degree cam and less than the distance from the upper surface of the needle bed to the sub root cam. The knitting bat has a height so as to be submerged in the needle groove of the needle bed.
When the flat knitting machine is made to carry out the standard plating knitting, the route changing presser is acted on the selection bat to make the knitting bat non-contact with the second descending slope.
When the flat knitting machine is made to carry out the reversing plating knitting, the knitting bat is lowered along the second descending slope by not acting the route changing presser on the selection bat.

As a form of the cam system of the present invention,
Further, the sub-root cam may have a shape having a holding lower surface extending in the left-right direction from the lower end of the second descending slope and connected to the first descending slope of the degree cam.

The flat knitting machine of the present invention
With multiple knitting needles with knitting bats,
A needle bed on which a plurality of knitting needles are arranged and
A carriage equipped with a cam system that drives the knitting needle, and
In a flat knitting machine provided with a plurality of yarn feeding ports for feeding knitting yarn to the needle bed.
The cam system is the cam system of the present invention.

According to the above configuration, two routes, a normal route guided by the Toyama cam and a sub route guided by the sub-route cam, can be formed in the cam system as the pull-in route of the knitting bat for determining the degree. .. The normal route is the route of the formation bat for performing standard plating formation, the sub-route is the route of the formation bat for performing reverse plating formation, and both routes are route-changed by the selection bat. It is switched depending on whether or not it acts on the presser. Since the sub-route cam is formed between the needle lasing cam and the Toyama cam, the pull-in of the knitting bat starts earlier in the sub-route than in the normal route. That is, when the standard route is switched to the sub route, the drawing of the knitting yarn on the sub route is started immediately after the drawing of the knitting yarn on the standard route, and it becomes easy to switch the vertical relationship between the main yarn and the splicing yarn. When the knitting yarn is pulled in by the sub-route, it acts on at least one of the main yarn and the splicing yarn, and is assisted by a member that promotes the replacement of the vertical relation between the main yarn and the splicing yarn. The replacement can be ensured. As such a member, for example, a movable sinker, a loop presser, a yarn guide, etc. provided in a flat knitting machine can be used, or a dedicated member can also be used.

Further, in the above configuration, the sub-route merges in the middle of the standard route. That is, the timing of determining the degree of the inverted plating knitting is the same as the timing when the standard plating knitting is performed. Therefore, when switching from the standard plating knitting to the inverted plating knitting in the middle of knitting the knitted fabric, the stitches to be knitted by the inverted plating knitting after the determination of the stitches to be knitted by the standard plating knitting is completed The degree of determination is made. That is, unlike the conventional technique, the order of determining the degree of two adjacent stitches is not reversed, and it is possible to suppress the action of excessive tension on the sinker loop connecting both stitches. As a result, the knitting of the knitted fabric is more stable than before, and the quality of the knitted fabric can be improved.

In the configuration in which the sub-route cam has a holding lower surface, the movement of the knitting bat in the longitudinal direction of the knitting needle, that is, the movement of the knitting needle is temporarily stopped in the middle of the sub-route. By providing a pause period in which the knitting needles are temporarily stopped in the reverse plating knitting, it is possible to stabilize the replacement state of the main yarn and the splicing yarn when the reverse plating knitting is continuously performed.

It is schematic explanatory drawing which shows the correspondence state of the knitting needle and the cam system in the flat knitting machine which concerns on Embodiment 1. FIG. (A) is a partially enlarged view of the vicinity of the sub-root cam in the cam system of FIG. 1, and (B) is a sectional view taken along line BB of (A). It is a schematic diagram which shows the locus of the hook of the knitting needle and the locus of a movable sinker in the standard plating knitting and the reversing plating knitting in the first embodiment. (A) to (F) are schematic views showing the state in the vicinity of the hook of the knitting needle in the standard plating knitting of FIG. (A) to (F) are schematic views showing the state in the vicinity of the hook of the knitting needle in the inverted plating knitting of FIG. It is a schematic diagram which looked at the state of the standard plating knitting from the upper part of the needle bed.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<Embodiment 1>
≪Overall configuration of flat knitting machine≫
In the embodiment, a two-bed flat knitting machine will be described as an example. Of course, the flat knitting machine may be a 4-bed flat knitting machine. The flat knitting machine includes a needle bed on which a plurality of knitting needles are arranged, a carriage equipped with a cam system for driving the knitting needles, and a plurality of yarn feeding ports for feeding the knitting yarn to the needle bed. The difference between the flat knitting machine of this example and the conventional flat knitting machine is the configuration of the cam system. Depending on the configuration of this cam system, the flat knitting machine of this example can use the standard plating knitting and the inverted plating knitting properly. Hereinafter, each configuration of the flat knitting machine will be described prior to the explanation of the standard plating knitting and the reverse plating knitting.

≪Needle bed and knitting needle≫
As shown in FIG. 6 referred to in the description of the prior art, the flat knitting machine 1 is provided with at least two needle beds 2 facing each other. The knitting needle 3 provided in each needle bed 2 will be described with reference to FIG.

FIG. 1 is a schematic explanatory view showing a corresponding state between the knitting needle 3 and the cam system 10 described later. In FIG. 1, for convenience of explanation, the knitting needle 3 and a part of the cam system 10 are shown in parallel. The cam system 10 is provided on the cam plate 10P of the carriage 1C on the back surface of FIG. For the carriage 1C and the cam plate 10P, refer to FIG. 2 (A) which is a partially enlarged view of FIG. 1 and FIG. 2 (B) which is a sectional view thereof BB. Further, FIG. 1 shows a traveling track (thin line arrow) drawn on the cam system 10 by a part of the bats provided on the knitting needle 3 in the knitting operation.

The knitting needle 3 of the flat knitting machine 1 includes a needle body 30, a needle jack 31, a select jack 32, and a selector 33. The needle body 30 has a hook 3F at its tip. The knitting needle 3 of this example is a latch needle that opens and closes the hook 3F with a latch 3L, but may be a composite needle that opens and closes the hook 3F with a slider.

The needle jack 31 is a member for advancing and retreating the needle body 30 in the length direction of the needle groove (vertical direction on the paper surface). The needle jack 31 is provided with a knitting bat 31b, and the knitting bat 31b is pushed up or down by a cam of a cam system 10 described later to cause the needle body 30 to perform a knitting operation.

The select jack 32 is a member for controlling whether or not the needle jack 31 is advanced or retreated. A selection butt 32b is formed at the tip of the select jack 32. When the selection butt 32b is lowered toward the needle groove by the presser of the cam system 10 described later, the intermediate portion of the needle jack 31 is lowered toward the needle groove by the tip end portion of the select jack 32. As a result, the intermediate portion of the needle jack 31 is bent, and the knitting butt 31b sinks into the needle groove and does not act on the cam.

The selector 33 is a member for changing the position of the select jack 32 in the length direction of the needle groove. The knitting needle 3 receives the needle selection by the needle selection actuator 19 provided on the cam plate 10P. If the selector 33 is not selected, the raising butt 33b of the selector 33 passes through the selector lasing cam 14. In that case, the select jack 32 does not change its position, and the selection butt 32b of the select jack 32 draws a straight trajectory in the left-right direction shown in the drawing. In this example, the position that draws this trajectory is the H position. On the other hand, when the selector 33 is selected, the raising butt 33b of the selector 33 is pushed up by the selector lasing cam 14 of the cam system 10. In that case, the tip of the selector 33 pushes up the selection butt 32b of the select jack 32, and the selection bat 32b moves on the upper trajectory in the drawing. In this example, the position that draws this trajectory is the A position. As can be seen from the trajectory of the A position, the selection bat 32b that moves the trajectory of the A position has the pressers 15 and 16 regardless of whether the pressers 15 and 16 described later are in the working position or the non-acting position. Do not touch. Since the position of the selection bat 32b changes according to the configuration of the knitting needle 3 and the configuration of the cam system 10, it may be possible to take a position other than the above-mentioned H position and A position.

≪Cam system≫
In the description of the cam system 10, FIGS. 1 and 2 are referred to. Here, for convenience of explanation, the cam system 10 of FIG. 1 is a cam system 10 capable of carrying out a knit tack mistake, but a composite cam system capable of transferring stitches may also be used. Further, in FIG. 1, an example in which the cam system 10 moves to the left of the paper to perform knitting will be described.

The cam system 10 includes a plurality of cams acting on the knitting bat 31b and a plurality of pressers acting on the selection bat 32b. Examples of the cam acting on the knitting bat 31b include a needle lasing cam 11, a pair of Toyama cams 12 and 12, and a pair of sub-root cams 13 and 13.

The needle lasing cam 11 includes an ascending slope 11s that raises the knitting bat 31b. When the knitting bat 31b is pushed up to the ascending slope 11s, the stitches locked to the hook 3F open the latch 3L, and the stitches come off below the latch 3L.

The degree mountain cam 12 includes a first descending slope 12s for lowering the knitting bat 31b. By lowering the knitting bat 31b, the hook 3F of the knitting needle 3 retracts from the tooth opening, and a new stitch following the old stitch is formed. The pull-in route of the knitting bat 31b guided by the first descending slope 12s of the Toyama cam 12 is a conventional normal route. When performing standard plating knitting, the knitting bat 31b is pulled down by a normal route.

The sub-route cam 13 is a cam that can switch between the standard plating formation and the reverse plating formation, and is arranged on the upper side of the first descending slope 12s between the needle lasing cam 11 and the degree mountain cam 12. (See also FIG. 2 (A)). Further, as shown in FIG. 2B, the protruding height of the sub-root cam 13 in the thickness direction of the carriage 1C is lower than the protruding height of the Toyama cam 12, and in this example, the protruding height of the Toyama cam 12 It is less than half.

As shown in FIG. 2A, the sub-route cam 13 extends in the left-right direction from the second descending slope 13s for lowering the knitting bat 31b and the lower end of the second descending slope 13s, and is the first of the Toyama cam 12. A holding lower surface 13f connected to the descending slope 12s is provided. It is preferable that the second descending slope 13s is substantially parallel to the first descending slope 12s, or is inclined more gently than the first descending slope 12s (inclination closer to the horizontal plane) as in this example. Further, the holding lower surface 13f is preferably parallel to the reciprocating direction of the carriage 1C. The pull-in route of the knitting bat 31b guided by the second descending slope 13s of the sub-route cam 13 and the holding lower surface 13f is an unprecedented sub-route. When performing reverse plating knitting, the knitting bat 31b is pulled down by a sub-route. As shown in FIG. 2A, the sub-route joins the normal route.

Examples of the presser acting on the selection bat 32b include a tack presser 15 and a pair of route changing pressers 16 and 16 provided at positions where the tack presser 15 is sandwiched. Although the pressers 15 and 16 in this example are of the swing type, they can also be of the infestation type.

The tack presser 15 has an action position (see the two-dot chain line) arranged on the running route of the H position of the selection bat 32b and an inactive position (see the solid line) separated from the running route of both the H and A positions. It is configured to be switchable to. The tack presser 15 is arranged at an action position when the knitting needle 3 is tacked. When the tack presser 15 is in the working position, the selection butt 32b is lowered into the needle groove, and the knitting bat 31b passes through the ascending slope 11s without contacting the ascending slope 11s of the needle lasing cam 11 (dashed line). See the arrow).

The route change presser 16 is configured to be switchable between an action position arranged on the travel route of the H position of the selection bat 32b and an inaction position separated from the travel route of both the H and A positions. In this example, the route change presser 16 on the leading side (left side of the paper) is always arranged at the non-acting position.

The protruding height of the route change presser 16 from the cam plate 10P is lower than that of the tack presser 15. Therefore, as shown in FIG. 1, when the route change presser 16 on the trailing side is in the action position and the selection bat 32b moves on the traveling track in the H position, the selection bat 32b changes the route on the trailing side. It is submerged in the needle groove by the presser 16. When the selection bat 32b sinks into the needle groove, as shown in FIG. 2 (B), the protrusion height of the knitting bat 31b from the needle groove exceeds the distance from the upper surface of the needle bed 2 to the degree cam 12. The distance from the upper surface of the needle bed 2 to the subroot cam 13 is less than that. Therefore, the knitting bat 31b is not in contact with the second descending slope 13s, and the knitting bat 31b draws a normal route guided by the first descending slope 12s of the degree mountain cam 12.

On the other hand, as shown in FIG. 1, the route change presser 16 on the trailing side is in the action position, but when the selection bat 32b moves on the traveling track in the A position, the selection bat 32b is not submerged in the needle groove. In that case, as shown in FIG. 2 (B), the protruding height of the knitting bat 31b from the needle groove exceeds the distance from the upper surface of the needle bed 2 to the sub-root cam 13, so that the knitting bat 31b Draws a subroute guided by the second descending slope 13b. Unlike this example, the subroute can be drawn on the knitting bat 31b by arranging the route change presser 16 on the trailing side at the non-acting position. When the route change presser 16 on the trailing side is in the inactive position, the selection bat 32b is not submerged in the needle groove regardless of the position of the selection bat 32b on the traveling track, so that the knitting bat 31b is the second. Guided by the descending slope 13s.

≪Threading port≫
In this example, the leading yarn feeding port 8 for feeding the main yarn 8Y and the trailing yarn feeding port 9 for feeding the additional yarn 9Y move on the same straight line when viewed from the needle bed 2 for knitting the knitted fabric. Is. Further, in this example, the leading yarn feeding port 8 and the trailing yarn feeding port 9 are provided in different yarn carriers. Unlike this example, one yarn carrier (so-called plating carrier) provided with two yarn feeders, a leading yarn feeder and a trailing yarn feeder 9, can also be used. In addition, the leading yarn feeding port 8 may be configured to move on a straight line located closer to the needle bed 2 for knitting the knitted fabric than the trailing yarn feeding port 9.

≪Plating organization≫
Using the weft knitting machine 1 provided with the cam system 10 described above, a standard plating knitting in which the main yarn is arranged on the surface side of the knitted fabric and an inverted plating knitting in which the yarn is arranged on the surface side of the knitted fabric are performed. An example of the knitting to be performed will be described with reference to FIGS. 3 to 5. At the time of reverse plating knitting, the reverse plating knitting can be surely carried out by assisting the replacement of the knitting yarns 8Y and 9Y with some member. In this example, a movable sinker is used to carry out the reverse plating formation.

As shown in FIGS. 4 and 5, the movable sinker 5 of this example is a knitting yarn that presses the concave edge portion 5A in which the knitting yarns 8Y and 9Y come into contact with each other and the sinker loop 40 (FIG. 6) in the inverted plating knitting described later. It is provided with a receiving portion 5B. The concave edge portion 5A is formed by partially denting a part of the outer peripheral side edge portion of the movable sinker 5 in a V shape on the receding direction side (lower left side of the paper surface in FIGS. 4 and 5) of the knitting needle 3. Of the two inclined surfaces constituting the V-shaped concave edge portion 5A, the inclined surface on the tip side of the movable sinker 5 is in the advancing / retreating direction of the knitting needle 3 regardless of the swing range of the movable sinker 5. The knitting needle 3 is tilted toward the receding direction (counterclockwise) with respect to the orthogonal planes that are orthogonal to each other. As shown in FIGS. 5A and 5B described later, the inclined surface on the tip side is a portion where the knitting yarns 8Y and 9Y are hooked during the reverse plating knitting. Further, in the concave edge portion 5A, the inclined surface on the root side of the movable sinker 5 is substantially parallel to the orthogonal surface orthogonal to the advancing / retreating direction of the knitting needle 3 regardless of the swing range of the movable sinker 5. Alternatively, the knitting needle 3 is tilted toward the advance direction side (clockwise side) from the orthogonal plane. The inclined surface on the root side is a portion where the knitting yarns 8Y and 9Y are locked when the standard plating knitting in FIG. 4 and the inversion plating knitting in FIG. 5 are determined, which will be described later. On the other hand, in the knitting yarn receiving portion 5B, of the outer peripheral side edge portion of the movable sinker 5, the portion on the tip end side of the movable sinker 5 with respect to the concave edge portion 5A is recessed toward the upper side of the needle bed (upper left side of the paper surface). It is formed by that.

Hereinafter, the standard plating organization and the inverted plating organization will be described in order. Hereinafter, the standard plating organization will be referred to as "SP organization", and the inverted plating organization will be referred to as "RP organization". FIG. 3 shows the locus of advance / retreat of the hook 3F of the knitting needle 3 (lower side of the paper surface) and the locus of swing of the tip of the movable sinker 5 (upper side of the paper surface) in the SP knitting and the inverted platen RP knitting (upper side of the paper surface). See FIGS. 4 and 5 for the shapes of the hook 3F and the movable sinker 5). In FIG. 3, the time has passed toward the right side of the paper, the locus of the hook 3F at the time of SP knitting is a solid line, and the portion of the locus of the hook 3F at the time of RP knitting that draws a locus different from that at the time of SP knitting is Shown by the dotted line. On the other hand, the two-dot chain line on the upper side of the paper surface in the locus of the tip of the movable sinker 5 indicates the closed position of the movable sinker 5, and the lower two-dot chain line indicates the open position of the movable sinker 5. Is shown. Hereinafter, the movement of the movable sinker 5 toward the needle bed is expressed as "the movable sinker closes", and the movement of the movable sinker 5 in the direction away from the needle bed is expressed as "the movable sinker opens". To do. The positional relationships of the knitting needle 3, the movable sinker 5, and the knitting yarns 8Y and 9Y at the periods A to F in the SP knitting (RP knitting) are shown in (A) to (F) of FIG. 4 (FIG. 5), respectively. .. In FIGS. 4 and 5, the knitting yarn (additional yarn) 9Y is hatched.

≪Standard plating organization≫
The arrangement of the pressers 15 and 16 in the SP knitting is as shown in FIG. 1 (when tacking, the tack presser 15 is set to the action position unlike FIG. 1). Further, the selection bat 32b is in the H position. As shown in FIG. 1, by setting the route change presser 16 and the tack presser 15 on the leading side as non-acting positions, the hook 3F of the knitting needle 3 draws a large mountain-shaped locus from the left side to the right side of the paper surface of FIG. After that, draw a trajectory for formation. In the large mountain-shaped locus, the knitting needle 3 (FIGS. 4 and 5) is advanced toward the tooth opening, and the latch 3L (FIGS. 4 and 5) is applied to the existing stitch (not shown) locked to the hook 3F. After overcoming it, the knitting needle 3 is retracted by the same amount as the amount of advancement. At this time, the movable sinker 5 is arranged in the closed position and presses the sinker loop to prevent the stitches from rising. On the other hand, in the locus for determining the degree, the movable sinker 5 is opened and closed while the knitting needle 3 is retracted. Before the hook 3F draws a trajectory for knitting, the movable sinker 5 is temporarily opened.

When performing SP knitting, the route change presser 16 on the trailing side (right side) shown in FIG. 1 is arranged at the action position, and the knitting bat 31b draws a standard route indicated by a thin arrow. Since the needle jack 31 and the needle body 30 operate integrally, the hook 3F of the needle body 30 draws a trajectory parallel to the standard route of the knitting bat 31b (FIG. 3). In the SP knitting, as shown in time A of FIG. 3, the movable sinker 5 is closed by about half before the knitting yarn for knitting is pulled in. At the time A shown in FIG. 4 (A), the main yarn 8Y and the additional yarn 9Y at a position higher than the main yarn 8Y are moved to the movable sinker 5 on the hook 3F of the knitting needle 3 as shown in the enclosed enlarged view. Not in contact.

From the time A to the time B of FIG. 3, the pulling of the knitting yarn for knitting is started, and the movable sinker 5 is held at the same position as the time A during that time. At the time B shown in FIG. 4B, the main thread 8Y and the auxiliary thread 9Y are in a state of being pulled by the hook 3F while maintaining their vertical relationship.

From period B to period C in FIG. 3, the movable sinker 5 is closed while the drawing of the knitting yarn is continued. At the time C shown in FIG. 4C, the main thread 8Y and the auxiliary thread 9Y are in contact with the concave edge portion 5A of the movable sinker 5 while maintaining their vertical relationship.

From period C to period D in FIG. 3, the knitting yarn is continuously pulled in at a constant speed from period B to period C, and the movable sinker 5 is maintained in the closed position. At the time D shown in FIG. 4 (D), the knitting needle 3 is slightly retracted from that of FIG. 4 (C), and the hierarchical relationship between the two knitting yarns 8Y and 9Y is maintained.

From period D to period E in FIG. 3, the knitting yarn is continuously pulled in at a constant speed, and the movable sinker 5 maintains the closed position. Determining is completed at time E. Even at the time E shown in FIG. 4 (E), the vertical relationship between the two knitting yarns 8Y and 9Y is maintained even when the knitting needle 3 is slightly retracted.

After the time E in FIG. 3, the knitting needle 3 is slightly advanced toward the tooth opening, the movable sinker 5 is opened to the open position, the tension applied to the knitting yarns 8Y and 9Y is relaxed, and then the movable sinker 5 is closed again. Close to position. As shown by the alternate long and short dash line in FIG. 4 (F), once the movable sinker 5 is opened, the two knitting yarns 8Y and 9Y (the portion corresponding to the sinker loop 40 in FIG. 6) slide down the concave edge portion 5A. When the movable sinker 5 is closed from the state, both knitting yarns 8Y and 9Y are hooked on the knitting yarn receiving portion 5B and held. By holding the sinker loop in the knitting yarn receiving portion 5B, the sinker loop can be pressed and the knitting state of the stitch can be stabilized.

≪Reversal plating organization≫
The arrangement of the pressers 15 and 16 in the RP organization is the same as the arrangement in the SP organization shown in FIG. However, the select jack 32 is pushed up by the selector 33 to shift the selection bat 32b to the A position. In this case, the route change presser 16 on the trailing side (right side of the paper) does not act on the selection bat 32b, and as shown in FIG. 2A, the knitting bat 31b moves the sub route guided by the sub route cam 13. To do. At that time, the hook 3F draws a locus parallel to the subroute (Fig. 3). As shown in FIG. 3, the locus of the tip of the movable sinker 5 in the RP knitting is the same as that of the SP knitting, and only the locus of the hook 3F is different from the SP knitting.

In the RP knitting, as shown in the time A of FIG. 3, the pull-in of the knitting yarn for knitting is started at a timing earlier than that in the case of performing the SP knitting. This is because, as shown in FIG. 2A, the second descending slope 13s of the sub-route cam 13 lowers the knitting bat 31b before the degree mountain cam 12. At this time, the movable sinker 5 is about half closed, and the main yarn 8Y and the auxiliary yarn 9Y are pulled into the hook 3F of the knitting needle 3 in a state of being hooked on the concave edge portion 5A of the movable sinker 5. At that time, as shown in FIG. 5A, the main thread 8Y contacts the inclined surface on the tip end side of the movable sinker 5 in the concave edge portion 5A and moves toward the deepest portion of the concave edge portion 5A. That is, the main thread 8Y is pulled upward on the concave edge portion 5A. As a result, both knitting yarns 8Y and 9Y are locked to the hook 3F in a state where the vertical relationship between the main yarn 8Y and the auxiliary yarn 9Y is exchanged.

In the RP knitting, the knitting yarns 8Y and 9Y are pulled in at an earlier timing than in the case of performing the SP knitting, so that the knitting yarns 8Y and 9Y are hooked on the hook 3F at a position closer to the yarn feeding ports 8 and 9 than in the case of performing the SP knitting. It will be. As shown in FIG. 6, at a position close to the yarn feeding ports 8 and 9, the main yarn 8Y and the auxiliary yarn 9Y are separated from each other, so that the vertical relationship between the two knitting yarns 8Y and 9Y can be easily exchanged. Further, by hooking the knitting yarns 8Y and 9Y on the hook 3F at a position close to the yarn feeding ports 8 and 9 and bringing the movable sinker 5 into contact with the knitting yarns 8Y and 9Y, the vertical relationship of the knitting yarns 8Y and 9Y is exchanged. It is easy to maintain the state and the RP formation is stable.

From the period A to B, the pulling of the knitting yarn is continued, and the position of the movable sinker 5 is maintained. At the time B shown in FIG. 5 (B), the knitting needle 3 was slightly retracted from that of FIG. 5 (A), and the hierarchical relationship between the two knitting yarns 8Y and 9Y replaced at the time A was maintained. There is.

From the period B to C in FIG. 3, the pulling of the knitting yarn is continued and the movable sinker 5 is gradually closed. At time C, the retreat of the knitting needle 3 is stopped, and the movable sinker 5 is arranged in the closed position.

From the period C to D in FIG. 3, the pulling of the knitting yarn and the swinging of the movable sinker 5 are completely stopped. This is because, as shown in FIG. 2A, the knitting bat 31b moves along the holding lower surface 13f of the sub-root cam 13. Since the movement of each member is stopped, there is no change between the state of each member at the time C shown in FIG. 5 (C) and the state of each member at the time D shown in FIG. 5 (D). By providing the rest period of each member, it is possible to create a state in which the knitting yarns 8Y and 9Y are not deeply drawn. By providing this rest period in the RP knitting, it is possible to stabilize the replacement state of the knitting yarns 8Y and 9Y when the RP knitting is continuously performed. Right now, when the knitting needle 3 is being moved to replace the knitting yarns 8Y and 9Y, if the knitting needle 3 for which the knitting yarns 8Y and 9Y have been replaced is stopped in the pause period, the knitting needle that is moving is being moved. This is because no extra tension acts on the knitting yarns 8Y and 9Y applied to 3. Since no extra tension acts on the knitting yarns 8Y and 9Y, the load on the knitting yarns 8Y and 9Y is also reduced.

After the period D in FIG. 3, the locus of the hook 3F and the locus of the tip of the movable sinker 5 in the RP formation completely match those of the SP formation. That is, the timing of the degree determination when the RP organization is performed is the same as the timing of the degree determination when the SP organization is performed. This is because, as shown in FIG. 2A, the holding lower surface 13f of the sub-route cam 13 is connected to the first descending slope 12s of the Toyama cam 12, and the sub-route of the knitting bat 31b joins the standard route. .. Here, the timing of determining the degree of RP knitting and SP knitting is the same, but as shown in FIGS. 5 (E) and 5 (F), the main yarn 8Y is arranged above the additional yarn 9Y in the hook 3F. Therefore, unlike the SP knitting, the hook yarn 9Y is arranged on the surface side of the knitted fabric.

Here, the pull-in route of the knitting needle 3 of the RP knitting is not particularly limited from the start of pulling in the knitting needle 3 of the RP knitting in FIG. 3 to joining the pulling route of the knitting needle 3 in the SP knitting at the time D. For example, the pulling route of the knitting needle 3 of the RP knitting may be merged with the pulling route of the knitting needle 3 of the SP knitting without stopping the pulling of the knitting needle 3 even once from the start of pulling in the knitting needle 3. That is, the rest period from period C to period D described above is not essential. For example, the period from time C to time D may be a pull-in route having a slope different from the period from time A to time C, or a pull-in route connecting from the start of pull-in to time D in a straight line.

≪Effect≫
By using the flat knitting machine 1 provided with the cam system 10 of this example, it is possible to suppress yarn breakage of knitting yarns 8Y and 9Y when switching from SP knitting to RP knitting, and as a result, the knitted fabric The quality can be improved. This is because, as described with reference to FIGS. 3 and 5, in the RP knitting of this example, the degree is determined at the same timing as when the SP knitting is performed. By doing so, when switching from SP knitting to RP knitting in the middle of knitted fabric knitting, after the stitches knitted by SP knitting are decided, the stitches knitted by RP knitting are decided. Is done. That is, unlike the conventional technique, the order of determining the degree of two adjacent stitches is not reversed, and it is possible to suppress the action of excessive tension on the sinker loop connecting both stitches. As a result, the knitting of the knitted fabric is more stable than before, and the quality of the knitted fabric can be improved.

<Embodiment 2>
In the first embodiment, an example of RP knitting using the movable sinker 5 has been described. On the other hand, if the member can assist the replacement of the knitting yarns 8Y and 9Y when the knitting yarns 8Y and 9Y are pulled in near the time A in FIG. 3, RP knitting is performed using a configuration other than the movable sinker 5. can do. Specifically, a member having an inclined surface that pulls up the main thread 8Y or a thread 9Y downward, such as an inclined surface on the tip end side of the concave edge portion 5A in the movable sinker 5 shown in FIG. 5 (A). A member having an inclined surface that pulls down can be used instead of the movable sinker 5. By providing such a pull-up inclined surface or a pull-down inclined surface on the existing member provided in the flat knitting machine 1, the RP knitting can be assisted by the existing member. Examples of the existing member include a loop presser (Japanese Patent Laid-Open No. 2013-64205) and a yarn guide (corresponding to the knitting yarn guide piece 32 of JP-A-6-033348). Of course, the RP knitting may be assisted by using a dedicated member having a pull-up slope or a pull-down slope.

1 Flat knitting machine 1C Carriage 2 Needle bed 3 Knitting needle 30 Needle body 3F Hook 3L Latch 31 Needle jack 31b Knitting bat 32 Select jack 32b Selection bat 33 Selector 33b Raising bat 4 stitches 40 Sinker loop 5 Sinker (movable sinker)
5A Concave edge 5B Knitting yarn receiving part 8 Leading yarn feeder 8Y Main yarn (knitting yarn)
9 Trailing yarn feeder 9Y Addition yarn (knitting yarn)
10 cam system 10P cam plate 11 needle lasing cam 11s ascending slope 12 degree mountain cam 12s first descending slope 13 sub-root cam 13s second descending slope 13f holding lower surface 14 selector lasing cam 15 tack presser 16 route change presser 19 needle selection actuator

Claims (3)

Among the flat knitting machines that knit a knitted fabric with a plurality of knitting needles provided in each of the plurality of needle grooves of the needle bed, the machine is mounted on a carriage that reciprocates on the upper surface of the needle bed along the length direction of the needle bed. It is a cam system,
A needle lasing cam having an ascending slope for raising the knitting bat provided on the knitting needle and advancing the knitting needle toward the tooth opening of the needle bed.
In a cam system having a first descending slope for lowering the knitting bat and a degree cam for retracting the knitting needle from the tooth opening.
Switching between the implementation of standard plating knitting in which the main yarn is arranged on the surface of the knitted fabric rather than the main yarn and the implementation of inverted plating knitting in which the yarn is arranged on the surface of the knitted fabric rather than the main yarn. Sub-route cam to enable and
A route changing presser that acts on the selection bat provided on the knitting needle and is configured to be switchable between an action position in which the knitting bat is submerged on the needle groove side and an action position in which the knitting bat does not act on the selection bat. Prepare,
The sub-route cam
It is arranged between the needle lasing cam and the degree cam on the upper side of the first descending slope, and the protrusion height of the carriage in the thickness direction is lower than that of the degree cam.
The sub-root cam has a second descending slope that lowers the knitting bat before coming into contact with the first descending slope of the sub-root cam, and the end portion of the sub-root cam on the Deyama cam side is the said. It is connected to the first descending slope and
The route change presser sets the protruding height of the knitting bat from the needle bed to be greater than the distance from the upper surface of the needle bed to the degree cam and less than the distance from the upper surface of the needle bed to the sub root cam. The knitting bat has a height so as to be submerged in the needle groove of the needle bed.
When the flat knitting machine is made to carry out the standard plating knitting, the route changing presser is acted on the selection bat to make the knitting bat non-contact with the second descending slope.
A cam system that lowers the knitting bat along the second descending slope by not allowing the route changing presser to act on the selection bat when the flat knitting machine is made to perform the reversing plating knitting. The cam system according to claim 1, wherein the sub-route cam further extends from the lower end of the second descending slope in the left-right direction and has a holding lower surface connected to the first descending slope of the degree cam. With multiple knitting needles with knitting bats,
A needle bed on which a plurality of knitting needles are arranged and
A carriage equipped with a cam system that drives the knitting needle, and
In a flat knitting machine provided with a plurality of yarn feeding ports for feeding knitting yarn to the needle bed.
A flat knitting machine in which the cam system is the cam system according to claim 1 or 2.

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