JP2020079466A - Stationary sinker and flat knitting machine - Google Patents

Abstract

To provide a stationary sinker and a flat knitting machine in which a stationary sinker and a knitting member are hard to collide.SOLUTION: The stationary sinker 1 comprises a plate-like sinker body 2 having a function for forming a sinker loop. On at least one side face 2a of the sinker body 2, a gradient of thickness is provided so as to increase along a transfer direction from an upper starting end 2f toward a lower terminal end 2g. A similar gradient is provided also on a side face 2b of the sinker body 2. By providing a gradient having a thickness increasing on both side faces 2a, 2b, the sinker body 2 is tapered in a front view shown in (a). When a knitting member such as a loop presser is intruded from an upper side of an opposite needle bed, it is hard to collide since the thickness of a plate is thin at a starting end 2f above the sinker body 2.SELECTED DRAWING: Figure 1

Description

  TECHNICAL FIELD The present invention relates to a fixed sinker provided at a tip of a needle bed of a flat knitting machine, and a flat knitting machine including such a fixed sinker.

  Conventionally, flat knitting machines have knitting needles arranged in parallel in the longitudinal direction of the needle bed at a constant pitch. The needle beds are arranged such that at least two needle beds face each other before and after the opening. Each knitting needle is accommodated in a needle groove provided in the needle bed, and a hook provided at the tip is driven so as to advance and retreat to the needle bed gap. A plate-shaped sinker is arranged as an independent member between the knitting needles on the tip side where the needle bed faces the needle bed gap. The knitting needle is driven by advancing the hook at the tip to the needle bed gap, supplying the knitting yarn to the hook from above the needle bed mouth, and then pulling the hook into the needle bed. The sinker is used to form the sinker loop together with the needle loop formed by the hook when the knitting needle is drawn into the needle bed, and to determine the size of the stitch. An immovable fixed sinker that is attached to the ostium side of the needle bed has a basic function for determining the degree, and if a protrusion is provided on the side surface of the fixed sinker, the function to support the lateral load of the knitting needle should be added. It is also possible (for example, see Patent Document 1).

  As a sinker having a degree determining function, a movable sinker having a tip end portion on the tooth gap side swinging is also used. The swinging tip portion of the movable sinker has a function of pushing the formed stitch below the needle bed gap. It is also possible to use a movable sinker and a fixed sinker together, and to determine the degree with the fixed sinker (see, for example, Patent Document 2). The fixed sinker can also support the wire to be the top tooth through a hole provided near the tip of the needle bed gap and stabilize the knockover of the old stitch when forming a new stitch.

  The flat knitting machine of Patent Document 2 is also provided with a loop presser that moves forward and backward between a fixed sinker on the front and rear needle beds and a knitting needle from an auxiliary bed provided above the rear needle bed. The loop presser has a function of guiding the knitting yarn to a hook of a knitting needle and pressing a stitch to be knitted (see, for example, Patent Document 3).

JP 2006-161230 A JP, 2015-132026, A International publication 03/018892 pamphlet

  As in Patent Document 3, a loop presser used together with a knitting needle and a fixed sinker provided on both front and rear needle beds and provided above a single needle bed, for example, a rear needle bed, enables formation of good stitches. It is considered to be one of the members. Although various functions of the knitting member can be considered, with respect to the front needle bed, the knitting member advances to the needle bed gap from above the needle bed facing the needle bed gap and reaches the side surface of the fixed sinker while descending at the tooth bed mouth. Function. Since many knitting needles are arranged with a narrow gap in each needle bed, the knitting member needs to enter the narrow gap between the fixed sinker and the knitting needle, which is the center between the knitting needles. When the knitting member enters the gap between the fixed sinker and the knitting needle from above the facing needle bed, the effect of the displacement between the front and rear needle beds is added, and the knitting member and the fixed sinker may collide. .. When the knitting member collides with the fixed sinker as the knitting member advances and retracts, the fixed sinker and the knitting member may be deformed or damaged.

  In a flat knitting machine, in order to knit a finely knitted fabric by using a thin knitting yarn, it is required to make a pitch of arranging knitting needles fine. When the pitch becomes finer, the gap between the fixed sinker through which the knitting member penetrates and the knitting needle also becomes narrower, and the allowable range of displacement between the front and rear needle beds becomes narrower, making it difficult to adjust the front and rear facing positions. In order to avoid the collision between the knitting member and the fixed sinker, it is conceivable to reduce the plate thickness of the knitting member and the fixed sinker. However, when the plate thickness is made thin, the knitting member and the fixed sinker are easily bent, and the thin knitting yarn is caught and easily cut.

  An object of the present invention is to provide a fixed sinker and a flat knitting machine in which a fixed sinker and a knitting member are less likely to collide with each other.

The present invention relates to a flat knitting machine having at least a pair of needle beds facing each other with a needle bed gap interposed therebetween, and is a plate-like sinker body arranged at the tip of a needle bed gap between knitting needles arranged in a needle bed and having a function of forming a sinker loop. In the fixed sinker of the flat knitting machine, including
At least one side surface of the sinker main body is provided with an inclination about the thickness such that it increases along a predetermined changing direction from the upper start end toward the lower end end in the state of being arranged on the needle bed. It is a featured fixed sinker.

  Further, in the present invention, the sinker main body provided with the inclination is a front edge on the front end side facing the needle bed gap at a degree determining portion on which the knitting yarn is hooked due to the function of forming the sinker loop, rather than the start end in the changing direction. It has a lower part.

Further, the sinker body of the present invention is characterized in that the other side surface, which is the back surface side of the one side surface, is also provided with an inclination with respect to the thickness.

Further, in the present invention, both side surfaces of the one side surface and the other side surface of the sinker body are provided with support protrusions protruding toward a side surface of the knitting needle that advances into the needle bed gap,
The inclination with respect to the thickness is provided on both side surfaces of the portion excluding the support protrusion.

Further, the present invention, a fixed sinker characterized by any of the above items,
At least a pair of needle beds that face each other across the needle bed gap,
With a knitting member for advancing and retracting to and from the tooth opening
The plate-shaped sinker body of the fixed sinker is arranged at the tip of the needle bed of at least one needle bed,
The knitting member is a flat knitting machine characterized by being provided above at least the other needle bed.

  According to the present invention, the fixed sinker includes a plate-shaped sinker body. The sinker main body is arranged at the needle bed gap side tip of the needle bed of the flat knitting machine, and at least on one side surface, the thickness increases along the changing direction from the upper start end to the lower end. The knitting member that advances from the opposing needle bed side to the needle bed gap is in a state of descending through the gap between the one side surface of the sinker body and the hook of the adjacent knitting needle along the changing direction of the thickness of the one side surface. Since the thickness of the sinker main body at the upper start end where the knitting members start descending into the gap becomes thinner than the thickness at the lower end end, collision can be made less likely. Since the thickness of the sinker body increases toward the terminal end with the inclination along the changing direction, it is possible to make the sinker body less likely to bend as compared with the case where the entire starting body is thin.

  Further, according to the present invention, even if the front edge of the sinker main body becomes thin at the upper start end, the degree determining part to which the sinker loop is applied during stitch formation is below the start end, so that the knitting yarn is It is possible to prevent the thickness of the hanging portion from becoming thin.

  Further, according to the present invention, since the other side surface of the plate-shaped sinker body also becomes thin at the upper start end and becomes thicker at the lower end along the changing direction, it is arranged on both needle beds facing each other in the front-rear direction and shared as a part. In addition, the thickness gradient can be effectively used. On the needle bed side where the knitting member is provided above, the starting end of the other side surface through which the knitting member that advances to and descends from the needle bed gap passes becomes thin, so it is possible to make the knitting member and the sinker body less likely to collide. Even when a movable sinker is also used for both needle beds, the side surface on which the movable sinker swings is made the back surface side of the side surface through which the knitting member passes, so that it is possible to increase the gap with the thinning start end and make it difficult to interfere. ..

  Further, according to the present invention, when the knitting member is arranged on the needle bed where the knitting member advances and retreats from the needle bed side facing each other across the needle bed gap, the sinker body of the fixed sinker has a thickness until the tip of the knitting member reaches the support protrusion. The knitting member can be made to invade laterally along the inclination of the one side surface where the number increases. The support protrusion can support the knitting needle that moves forward and backward on one side so that the knitting needle does not come too close to the invading knitting member.

  Further, according to the present invention, the sinker body of the fixed sinker is arranged at the tip side of the needle bed of at least one needle bed, and the knitting member provided above the other needle bed facing the needle bed back and forth at the tooth bedside. It is possible to obtain a flat knitting machine in which the knitting member and the sinker body are less likely to collide when performing vertical movement.

FIG. 1 is a partial front view and an overall right side view showing a configuration of a fixed sinker 1 which is an embodiment of the present invention. FIG. 2 is a partial right side sectional view of the flat knitting machine 10 to which the fixed sinker 1 of FIG. 1 is mounted. FIG. 3 is a partial right side sectional view showing the operation of the loop presser 20 in the flat knitting machine 10 of FIG. FIG. 4 is a schematic plan view showing the arrangement of the fixed sinker 1 and the loop presser 20 in the flat knitting machine 10 of FIG.

  Hereinafter, a schematic configuration of a fixed sinker 1 which is an embodiment of the present invention will be described with reference to FIGS. 1 to 4. For convenience of description, a portion not described in the drawing to be described may be referred to with a reference mark described in another drawing.

  FIG. 1 shows the structure of a fixed sinker 1 which is an embodiment of the present invention. (A) is a front view of a fixed sinker 1 and a sinker main body 2 that performs functions such as forming a sinker loop, and (b) is an overall right side surface of the fixed sinker 1 shown in a posture in which it is mounted on a needle bed. It is a figure. The sinker body 2 is plate-shaped, is arranged at the tip of the needle bed of the flat knitting machine, and has the function of forming sinker loops. On one side surface 2a of the sinker main body 2, in the state of being arranged on the needle bed, an inclination with respect to the thickness is increased so as to increase from the upper start end 2f toward the lower end end 2g along a predetermined changing direction D. It is provided. The same inclination is also provided on the other side surface 2b of the sinker body 2, which is the back surface side of the one side surface 2a. In the present embodiment, the both sides 2a, 2b of the sinker body 2 are provided with an inclination that increases in thickness so as to be symmetrical, and the sinker body 2 is tapered in the front view shown in FIG.

  The thickness of the fixed sinker 1 other than the sinker body 2 is larger than that of the sinker body 2, and serves as the support protrusion 3 and the mounting arm 4. When the knitting needle that advances into the needle bed gap is subjected to a lateral load and tries to bend when the fixed projection 3 is attached to the needle bed as the fixed sinker 1, the supporting projection 3 hits the side surface of the knitting needle to prevent lateral bending. Support to do. In this embodiment, the support knitting machine is used for a flat knitting machine having two upper and lower needle beds, and the supporting protrusions 3 include an upper stage portion 3a and a lower stage portion 3b. The support protrusion 3 is provided on the side of the sinker main body 2 which is away from the needle bed gap when the fixed sinker 1 is attached to the needle bed. The tooth gap side of the sinker main body 2 serves as a front edge 2c, and the recessed portion near the upper and lower intermediate portions of the front edge 2c serves as a degree determining portion 2d. A through hole 2e is provided near the middle of the degree determining portion 2d and the end 2g. The through hole 2e can support a wire that serves as a tooth. The lower parts of the sinker body 2 and the support protrusion 3 continue to the mounting arm 4. The mounting arm 4 has a hooking recess 4a on the upper end side and a through hole 4b on the lower end side.

  As shown in (a), the plate thickness of the sinker main body 2 is T1 at the upper start end 2f and T2 at the lower end 2g separated from the start end 2f by a height H. The direction from the starting end 2f to the terminating end 2g is the direction along the changing direction D in (b). The changing direction D is related to the entering direction of the knitting member, and the entering direction will be described later with reference to FIG.

  When manufacturing the fixed sinker 1, a metal plate having a plate thickness necessary for the mounting arm 4 is used as a material, and the support projections 3 are left without reducing the plate thickness to reduce the plate thickness of the sinker main body 2. Perform processing that causes it. This processing can be performed by mechanical cutting or grinding. The inclination for increasing the thickness may be asymmetric such that the angle is different between the one side surface 2a and the other side surface 2b, the angle may change in the middle, a curved surface may be provided, or only one side surface 2a may be provided.

  The thickness of the sinker main body 2 is about a quarter of the thickness of the metal plate before processing. As the metal plate, for example, a steel plate having a thickness of about 1 mm can be used. The taper of the thickness is formed, for example, such that the thickness T1 at the start end 2f is 0.26 mm and the thickness T2 at the end 2g is about 0.30 mm. The height H is, for example, about 8 mm. In this case, as the thickness increases by 0.04 mm while advancing 8 mm, a slope of 0.5% is obtained. When the thickness T1 of the starting end 2f is reduced, it is difficult for the knitting members entering from the opposing needle beds to collide. Even if the thickness T1 is reduced, the thickness of the degree determining portion 2d provided on the way from the starting end 2f to the terminating end 2g is lower than the starting end 2f, and thus is thicker than T1. Unless the thickness T2 of the terminal end 2g is made too thin, it is possible to prevent the thickness of the knitting yarn hanging portion 2s from becoming thin. However, if the thickness T1 at the upper starting end 2f becomes thin and becomes sharp, the knitting yarn may come into contact with the needle bed gap and be damaged. The thicknesses T1 and T2 may be appropriately determined according to the plate thickness of the metal plate of the material, the degree to which the knitting members enter and overlap.

  FIG. 2 schematically shows a partial configuration of a flat knitting machine 10 equipped with the fixed sinker 1 of FIG. The fixed sinker 1 is attached so that the sinker main body 2 is attached to the front end side of the substrates 11a, 12a facing each other with the front needle bed 11 and the rear needle bed 12. Although the needle beds 11 and 12 are provided in upper and lower two stages, respectively, the upper needle beds are not shown. The fixed sinker 1 is attached by inserting the mounting arm 4 into a groove formed on the tip side of the substrates 11a and 12a. A latch wire 13 is inserted between the latch recess 4a of the mounting arm 4 and the substrates 11a, 12a, and a lower through hole 4b (not shown) passes through a groove provided in the substrates 11a, 12a. Penetrate the wire. The fixed sinkers 1 mounted on the front needle bed 11 and the rear needle bed 12 face each other with a needle bed gap 14 formed in a gap between the front needle bed 11 and the rear needle bed 12 interposed therebetween.

  The front needle bed 11 and the rear needle bed 12 have basically the same configuration including the upper stage side (not shown), and the knitting needles 15 are provided in the upper and lower two stages. As the knitting needle 15, a compound needle is used in which the hook 15a at the tip is moved forward and backward to the needle bed gap 14 and the hook 15a is opened and closed by the slider 15b. As the sinker, the movable sinker 16 is used in addition to the fixed sinker 1. When forming the stitch, the knockover is stabilized by using the wire 17 for the top tooth supported by the through hole 2e provided in the sinker body 2 of the fixed sinker 1.

  In each of the needle beds 11 and 12, needle plates are provided so as to be lined on the side away from the needle bed gap 14 with respect to the sinker body 2 of the fixed sinker 1 lined up on the needle bed gap 14 side, and the knitting needles 15 are accommodated between the needle plates. A needle groove is formed. It is also possible to extend the needle plate toward the needle bed gap 14 side and form the sinker body 2 at the tip. When the needle beds 11 and 12 are provided in two upper and lower stages, the needle bed on the upper stage side is placed on the extension of the needle plate on the lower stage side to the upper side of the needle plate. The needle plate on the upper side of the rear needle bed 12 is extended upward to support an auxiliary bed that houses the loop presser 20. The tip portion 21 of the loop presser 20 can enter the fixed sinker 1 mounted on the front needle bed 11 from above the rear needle bed 12 so as to overlap on one side surface 2a of the sinker body 2. The loop presser 20 shown by the solid line shows a state of standing by above the rear needle bed 12. The loop presser 20 is driven by a cam mechanism mounted on a carriage (not shown) as disclosed in, for example, Japanese Patent Laid-Open Publication No. 2003-242242, and as shown by a chain double-dashed line, is located above the rear needle bed 12 side. To approach the center of the tooth gap 14 and approach the sinker body 2 of the fixed sinker 1.

  FIG. 3 shows the operation of the loop presser 20 related to the changing direction D of FIG. 1B in the flat knitting machine 10 of FIG. At the position where the tip end portion 21 shown by the two-dot chain line in FIG. 2 further advances and hangs on the sinker body 2 of the fixed sinker 1 of the front needle bed 11, as shown by the solid line, the tip end portion 21 is The gap between the side surface 2a of the second needle 2 and the hook 15a of the knitting needle 15 is lowered. Therefore, the intrusion direction at the overlapping portion between the sinker main body 2 and the tip end portion 21 of the loop presser 20 corresponds to the vertical change direction D shown in FIG. Since the thickness of the sinker body 2 at the upper start end 2f at which the loop presser 20 starts to advance into the overlapping range is smaller than that at the lower end end 2f, the risk of mechanical interference is reduced, and collision is less likely to occur. be able to. In the sinker body 2, when the movable sinker 16 is provided in the gap between the other side surface 2b and the hook 15a of the knitting needle 15 by providing the other side surface 2b, which is the back surface side of the one side surface 2a, with an inclination about the thickness, It is possible to increase the gap to make it difficult to interfere. Further, when the fixed sinker 1 is mounted on the rear needle bed 12, the other side surface 2b through which the loop presser 20 passes can utilize the inclination of the thickness to secure a gap.

  FIG. 4 schematically shows the arrangement of the fixed sinker 1 and the loop presser 20 in the flat knitting machine 10 of FIG. 2 and 3 correspond to a cross section viewed from a position where the knitting needle 15 is on the front side and the fixed sinker 1 is on the back side. Between the fixed sinker 1 and the knitting needle 15, the tip portion 21 of the loop presser 20 advances and retracts, and the movable sinker 16 is arranged. The front end 21 of the loop presser 20 penetrates into the gap S between the one side surface 2a of the sinker body 2a and the hook 15a of the knitting needle 15 on the front needle bed 11, and the other side surface 2b and the hook 15a on the rear needle bed 12. Break in between. Further, the movable sinker 16 is arranged on the other side surface 2b side of the sinker body 2 in the front needle bed 11 and on the one surface 2a side of the sinker body 2 in the rear needle bed 12, and the tip end portion swings at the tooth gap 14. Since the plate thickness of the side surfaces 2a and 2b of the sinker main body 2 is reduced to the side of the swinging tip portion, a gap is secured and interference during swinging can be reduced.

  On both side surfaces 2a, 2b of the sinker main body 2, a support protrusion 3 is provided which protrudes toward the side surface of the knitting needle 15 that advances into the needle bed gap 14. The loop presser 20 can be inserted laterally along the slope on the side of the one side surface 2a where the thickness increases until the tip 21 reaches the support protrusion 3. The support protrusion 3 can laterally support the knitting needle 15 that advances and retreats on the one side surface 2a side so as not to come too close to the distal end portion 21 of the loop presser 20 that has entered. Since the inclination with respect to the thickness is provided on both side surfaces 2a and 2b of the sinker main body 2 excluding the support protrusion 3, the inclination can be effectively provided within a range in which the tip portion 21 can enter.

  In this embodiment, the front needle bed 11 and the rear needle bed 12 are in two upper and lower stages, but both may be in one stage or one of them may be in one stage. In order to make the loop presser 20 penetrating from above the opposing needle bed and the start end 2f of the sinker main body 2 less likely to collide with each other, it is only necessary to provide an inclination for increasing the plate thickness only on the one side surface 2a invading. .. Since the plate thickness is continuously increased by the inclination, a discontinuous step portion which is performed stepwise does not occur, and even when the loop presser 20 comes into contact, it is possible to guide the smooth intrusion. it can.

  The effect of providing the inclination of the plate thickness described above is not limited to the case where the loop presser 20 enters from the auxiliary bed provided only above one of the needle beds before and after sandwiching the needle bed gap 14 but also from above both needle beds. The loop presser 20 can be effectively obtained even when the loop pressers 20 are respectively inserted. It is also obtained when a knitting member other than the loop presser 20 that contributes to the knitting of the knitted fabric enters. For example, in this embodiment, the knitting member may perform the action of pushing the stitch downward, which is performed by the movable sinker 16. A knitting member having a new function can also be added.

1 fixed sinker 2 sinker main body 2a one side 2b other side 2c front edge 2d degree determining portion 3 support protrusion 10 flat knitting machine 11 front needle bed 12 rear needle bed 14 needle bed 15 knitting needle 15a hook 16 movable sinker 20 loop presser 21 tip portion

Claims (5)

A flat knitting machine having at least a pair of needle beds facing each other across a needle bed gap, including a plate-shaped sinker body having a sinker loop forming function, which is arranged at a tip of a needle bed gap between knitting needles arranged in a needle bed. In fixed sinker of knitting machine,
At least one side surface of the sinker main body is provided with an inclination about the thickness such that it increases along a predetermined changing direction from the upper start end toward the lower end end in the state of being arranged on the needle bed. A characteristic fixed sinker. The sinker main body provided with the inclination has a degree determining portion on which a knitting yarn is applied due to the function of forming the sinker loop, at a front edge on the front end side facing the needle bed gap, and below the start end in the changing direction. The fixed sinker according to claim 1, wherein the fixed sinker is a fixed sinker. The fixed sinker according to claim 1 or 2, wherein the sinker body is provided with an inclination with respect to the thickness also on the other side surface which is the back surface side of the one side surface. Supporting protrusions are provided on both side surfaces of the one side surface and the other side surface of the sinker body so as to project toward a side surface of the knitting needle that advances into the needle bed gap.
The fixed sinker according to claim 3, wherein the inclination with respect to the thickness is provided on both side surfaces of a portion excluding the support protrusion. The fixed sinker according to any one of claims 1 to 4,
At least a pair of needle beds that face each other across the needle bed gap,
With a knitting member for advancing and retracting to and from the tooth opening
The plate-shaped sinker body of the fixed sinker is arranged at the tip of the needle bed of at least one needle bed,
The flat knitting machine, wherein the knitting member is provided at least above the other needle bed.

Images