JP7256632B2 - Fixed sinkers and flat knitting machines - Google Patents

Description

The present invention relates to a fixed sinker provided at the tip of a needle bed of a flat knitting machine on the needle bed side, and a flat knitting machine provided with such a fixed sinker.

Conventionally, a flat knitting machine has knitting needles arranged side by side at a constant pitch in the longitudinal direction of a needle bed. The needle beds are arranged such that at least two of them are opposed to each other in front and behind the denture. Each knitting needle is housed in a needle groove provided in a needle bed, and driven such that a hook provided at its tip advances and retreats from a needle bed. A plate-shaped sinker is arranged as an independent member between the knitting needles on the tip side of the needle bed facing the needle bed. The knitting needle is driven by advancing the hook at the tip into the needle bed, supplying knitting yarn to the hook from above the needle bed, and then pulling the hook into the needle bed. The sinker is used to form a sinker loop together with a needle loop formed by a hook when pulling the knitting needle into the needle bed, and to determine the size of the stitch. A fixed sinker attached to the needle bed side and immovable has a basic function of determining the degree, and if a projection is provided on the side surface of the fixed sinker, a function of supporting the side load of the knitting needle is added. (See, for example, Patent Document 1).

As a sinker having a degree setting function, a movable sinker whose tip part on the side of the tooth mouth oscillates is also used. The oscillating tip portion of the movable sinker has a function of pushing the formed stitch downwardly. A movable sinker and a fixed sinker can be used together, and the degree of strength can be determined by the fixed sinker (see Patent Document 2, for example). The fixed sinker can also support the wire that will be the crown tooth in the hole provided near the tip of the tooth mouth side, 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 advances and retreats between the fixed sinkers and the knitting needles of the front and rear needle beds from an auxiliary bed provided above the rear needle bed. The loop presser has the function of guiding the knitting yarn to the hook of the knitting needle and pressing the stitch to be knitted (see, for example, Patent Document 3).

JP 2006-161230 A JP 2015-132026 A WO03/018892 Pamphlet

As in Patent Document 3, a loop presser provided above one needle bed, for example, the back needle bed and used together with knitting needles and fixed sinkers provided on both the front and back needle beds enables formation of good stitches. It is considered to be one of the members. Various functions of the knitting member are conceivable, but with respect to the front needle bed, it advances from above the needle bed facing the front needle bed, descends at the needle bed, and reaches the side of the fixed sinker. function. Since a large number of knitting needles are arranged on each needle bed with narrow gaps, the knitting member needs to enter the narrow gap between the knitting needles and the fixed sinker, 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 opposing needle beds, the influence of the displacement between the front and back needle beds is also added, and there is a possibility that the knitting member and the fixed sinker collide. . If the knitting member collides with the fixed sinker due to the advance and retreat of the knitting member, the fixed sinker and the knitting member may be deformed or damaged.

In a flat knitting machine, it is desired to reduce the pitch at which knitting needles are arranged side by side in order to knit a knitted fabric with fine stitches using fine knitting yarn. As the pitch becomes finer, the gap between the fixed sinker into which the knitting member enters and the knitting needle becomes narrower, and the allowable range of deviation between the front and rear needle beds becomes narrower, making it difficult to adjust the front and rear opposing positions. In order to avoid 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 board thickness is reduced, the knitting member and the fixed sinker tend to bend, and the thin knitting yarn is easily caught and cut.

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

The present invention is a flat knitting machine having at least a pair of needle beds facing each other with a needle bed therebetween. In a fixed sinker of a flat knitting machine comprising
At least one side surface of the sinker body is provided with a thickness gradient that increases along a predetermined direction of change from an upper start end toward a lower end when placed on the needle bed ,
The sinker body provided with the inclination has a degree-determining portion on which the knitting yarn is applied by the function of forming the sinker loop, at the leading edge on the tip side facing the needle gap, below the starting end in the changing direction, and at the terminal end. It is a fixed sinker characterized by having it above the .

Further, the sinker body of the present invention is characterized in that the thickness is also inclined on the other side surface which is the back side of the one side surface.

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 projections projecting toward the side surface of the knitting needle extending into the needle gap,
The slope of the thickness is provided on both side surfaces of the portion excluding the support protrusion.

The present invention also provides a fixed sinker characterized by any of the above items,
at least a pair of needle beds facing each other across the tooth gap;
A knitting member that advances and retreats to the tooth gap and moves up and down at the tooth gap,
The plate-shaped sinker body of the fixed sinker is arranged at the tip of at least one needle bed on the tooth mouth side,
The knitting member is provided above at least the other needle bed in the flat knitting machine.

According to the invention, the stationary sinker comprises a plate-shaped sinker body. The sinker body is arranged at the tip of the needle bed of the flat knitting machine on the needle bed side, and on at least one side surface, the thickness increases along the changing direction from the upper start end to the lower end end. The knitting member advancing from the opposing needle bed side to the needle bed descends along the thickness change direction of the one side in the gap between the one side of the sinker body and the hook of the adjacent knitting needle. Since the thickness of the sinker body is thinner at the upper start end where the knitting member starts to descend into the gap than at the lower end end, it is possible to make collision difficult. Since the thickness of the sinker body increases toward the terminal end with an inclination along the direction of change, it is possible to make it difficult to bend compared to the case where the entire sinker body is thinned at the starting end.
In addition, even if the thickness of the front edge of the sinker body becomes thin at the upper starting end, the part where the sinker loop is applied when forming the stitch is near the middle from the starting end to the terminal end, so the portion where the knitting yarn is applied. thickness can be prevented from becoming thin.

Further, according to the present invention, the other side surface of the plate-like sinker body is also thin at the upper start end along the change direction and becomes thick at the lower end end, so that when the sinker body is arranged on both front and rear facing needle beds 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 descending into the tooth gap passes is thinner, so that the knitting member and the sinker body are less likely to collide. Even when the movable sinker is also used for both needle beds, the side surface on which the movable sinker swings is the back side of the side surface through which the knitting member passes, thereby increasing the gap between the thinning starting end and making 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 the needle bed across the needle bed, the sinker main body of the fixed sinker has a thickness until the tip of the knitting member reaches the support projection. The knitted member can be laterally intruded along the slope of one side with increasing . The support projection can support the side so that the knitting needle advancing and retreating on the one side does not come too close to the intruding knitting member.

Further, according to the present invention, the sinker main body of the fixed sinker is arranged at the tip of at least one needle bed on the needle bed side, and the knitting member provided above the other opposing needle bed advances and retreats to and from the needle bed. It is possible to obtain a flat knitting machine in which the knitting member and the sinker body are less likely to collide when vertically moved.

FIG. 1 is a partial front view and an overall right side view showing the configuration of a fixed sinker 1 that 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 attached. 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.

A schematic configuration of a fixed sinker 1 according to an embodiment of the present invention will be described below with reference to FIGS. 1 to 4. FIG. For convenience of explanation, parts not shown in the figure to be explained may be referred to by attaching reference numerals shown in other figures.

FIG. 1 shows the configuration of a fixed sinker 1 that is one embodiment of the present invention. (a) is a front view of a sinker main body 2 of the fixed sinker 1 that performs functions such as forming a sinker loop, and (b) is an overall right side view of the fixed sinker 1 shown in the posture of being attached to the needle bed. It is a diagram. The sinker main body 2 is plate-shaped, is arranged at the tip of the needle bed of the flat knitting machine on the needle bed side, and has the function of forming a sinker loop. One side surface 2a of the sinker body 2 has a thickness gradient that increases along a predetermined change direction D from an upper starting end 2f toward a lower terminal end 2g in the state of being placed on the needle bed. be provided. The other side surface 2b of the sinker body 2, which is the back side of the one side surface 2a, is similarly inclined. In this embodiment, both side surfaces 2a and 2b of the sinker body 2 are symmetrically inclined so that the thickness increases, and the sinker body 2 is tapered in the front view shown in (a).

In the fixed sinker 1, other parts than the sinker main body 2 are thicker than the sinker main body 2 and become the support projection 3 and the mounting arm 4. - 特許庁When the needle bed as the fixed sinker 1 is attached to the needle bed, the support projection 3 hits the side surface of the knitting needle and prevents the lateral deflection when the knitting needle advancing to the tooth gap is subjected to a side load and tries to bend. support to do so. This embodiment is used in a flat knitting machine having upper and lower two-stage needle beds, and the support protrusion 3 includes an upper stage portion 3a and a lower stage portion 3b. The support projection 3 is provided on the side of the sinker main body 2 away from the needle bed when the fixed sinker 1 is attached to the needle bed. The tooth mouth side of the sinker body 2 becomes the front edge 2c, and the concave portion near the upper and lower middle of the front edge 2c becomes the degree determining portion 2d. A through hole 2e is provided near the middle between the degree determining portion 2d and the terminal end 2g. The through-hole 2e can support a wire that becomes the top tooth. The sinker body 2 and the lower part of the support projection 3 continue to the mounting arm 4 . The mounting arm 4 has a latch 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 body 2 is T1 at the upper starting end 2f, and T2 at the lower terminal end 2g separated by the height H from the starting end 2f. The direction from the start end 2f to the end end 2g is the direction along the change direction D in (b). The direction of change D relates to the direction of entry of the knitted member, which direction will be described later in the description relating to FIG.

When manufacturing the fixed sinker 1, a metal plate having a thickness required for the mounting arm 4 is used as a material, and the plate thickness of the sinker main body 2 is reduced while the plate thickness of the support projection 3 is left unchanged. It is processed to make it look like it. This processing can be performed by mechanical cutting or grinding. The inclination of thickness increase may be asymmetric such that the angle is different between one side surface 2a and the other side surface 2b, the angle may change in the middle, the surface may be curved, or only one side surface 2a may be provided.

The thickness of the sinker main body 2 is approximately one 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 tapered thickness is formed with a thickness T1 of about 0.26 mm at the starting end 2f and a thickness T2 of about 0.30 mm at the terminal end 2g, for example. The height H is, for example, approximately 8 mm. In this case, a 0.5% slope is obtained because the thickness increases by 0.04 mm for every 8 mm step. If the thickness T1 of the starting end 2f is reduced, it becomes difficult for the knitting members entering from the opposing needle beds to collide with each other. Even if the thickness T1 is reduced, the thickness at the degree determining portion 2d between the starting end 2f and the terminal end 2g is lower than the starting end 2f and is therefore thicker than T1. If the thickness T2 of the terminal end 2g is not too thin, it is possible to prevent the thickness of the portion 2s where the knitting yarn is hooked from becoming thin. However, if the thickness T1 becomes thin and sharp at the upper starting end 2f, the knitting yarn may come into contact with the needle bed and be damaged. The thicknesses T1 and T2 may be appropriately determined according to the plate thickness of the metal plate as the material, the extent to which the knitting members invade and overlap, and the like.

FIG. 2 shows a simplified partial configuration of a flat knitting machine 10 to which the fixed sinker 1 of FIG. 1 is attached. The fixed sinker 1 is mounted so that the sinker main body 2 is mounted on the front needle bed 11 and the rear needle bed 12 on the tip sides of the opposing substrates 11a and 12a. Each of the needle beds 11 and 12 is provided in two upper and lower stages, but the illustration of the upper needle beds is omitted. The fixed sinker 1 is attached by inserting the mounting arm 4 into grooves formed on the tip sides of the substrates 11a and 12a. A hooking wire 13 is inserted between the hooking recess 4a of the mounting arm 4 and the substrates 11a and 12a. pass the wire through. The fixed sinkers 1 attached to the front needle bed 11 and the rear needle bed 12 are opposed to each other with the needle bed 14 formed in the 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 side (not shown), and are equipped with knitting needles 15 in two upper and lower stages. As the knitting needle 15, a compound needle is used in which a hook 15a at the tip is advanced and retracted to the needle bed gap 14 and the hook 15a is opened and closed by a slider 15b. As sinkers, in addition to the fixed sinker 1, a movable sinker 16 is also used. At the time of stitch formation, the top tooth wire 17 supported by the through hole 2e provided in the sinker body 2 of the fixed sinker 1 is used to stabilize the knockover.

In each of the needle beds 11 and 12, needle plates are arranged on the side away from the needle bed 14 with respect to the sinker body 2 of the fixed sinker 1 arranged on the needle bed 14 side, and the knitting needle 15 is accommodated between the needle plates. A needle groove is formed. It is also possible to extend the needle plate toward the tooth gap 14 side and form the sinker body 2 at the tip. When needle beds 11 and 12 are provided in two stages, the upper needle bed is placed on the upper extension of the needle plate of the lower needle bed. A needle plate on the upper side of the rear needle bed 12 extends upward and supports an auxiliary bed that accommodates the loop presser 20 . The tip portion 21 of the loop presser 20 can enter the fixed sinker 1 attached to the front needle bed 11 from above the rear needle bed 12 so as to overlap one side surface 2a of the sinker body 2 . The loop presser 20 indicated by a solid line stands 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, for example, in Japanese Patent Laid-Open No. 2002-200023, and moves upward toward the rear needle bed 12 side as indicated by a chain double-dashed line. , it advances to the vicinity of the center of the tooth gap 14 and approaches the sinker body 2 of the fixed sinker 1.

FIG. 3 shows the operation of the loop presser 20 in the flat knitting machine 10 of FIG. 2 in relation to the change direction D of FIG. 1(b). At a position where the tip portion 21 shown by the two-dot chain line in FIG. 2 and the hook 15a of the knitting needle 15. Therefore, the direction of intrusion at the overlapping portion between the sinker body 2 and the tip portion 21 of the loop presser 20 corresponds to the vertical change direction D shown in FIG. 1(b). Since the thickness of the sinker body 2 is thinner at the upper starting end 2f where the loop presser 20 starts to advance into the overlapping range, compared to the lower terminal end 2f, the risk of mechanical interference is reduced, making collision difficult. be able to. In the sinker body 2, the thickness of the other side surface 2b, which is the back side of the one side surface 2a, is also inclined so that 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, The gap can be increased to make interference difficult. Further, when the fixed sinker 1 is attached to the rear needle bed 12, the other side surface 2b through which the loop presser 20 passes can be secured by utilizing the inclination of the thickness.

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 cross sections 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 moves forward and backward, and the movable sinker 16 is arranged. The tip portion 21 of the loop presser 20 enters the gap S between the side surface 2a of the sinker body 2a and the hook 15a of the knitting needle 15 on the front needle bed 11, and between the other side surface 2b and the hook 15a on the back needle bed 12. intrude in between. A movable sinker 16 is arranged on the other side surface 2b side of the sinker body 2 on the front needle bed 11 and on the one surface 2a side of the sinker body 2 on the rear needle bed 12. Since the plate thicknesses of the side surfaces 2a and 2b of the sinker body 2 are reduced on the sides of the swinging tip portion, a clearance is secured and interference during swinging can be reduced.

Both side surfaces 2 a and 2 b of the sinker body 2 are provided with support projections 3 projecting toward the side surface of the knitting needle 15 extending into the needle bed 14 . The loop presser 20 can be laterally intruded along the slope of the one side surface 2a side where the thickness increases until the tip 21 reaches the support projection 3 . The support projection 3 can support the side so that the knitting needle 15 advancing and retreating on the one side 2a side does not come too close to the tip 21 of the loop presser 20 that has entered. Since the thickness is inclined on both side surfaces 2a and 2b of the sinker body 2 except for the support projection 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 arranged in two stages, but both may be one stage, or one may be one stage. In order to prevent collision between the loop presser 20 and the starting end 2f of the sinker body 2, which enter from above the opposing needle bed, it is sufficient to provide an inclination that increases the plate thickness only on the side of the intruding side surface 2a. . Since the plate thickness is increased continuously by the inclination, there is no discontinuous step that occurs in stages, and even when the loop presser 20 comes into contact with the loop presser 20, the loop presser 20 can be guided smoothly. can.

The above-described effect of providing the plate thickness slope is not limited to the case where the loop presser 20 enters from the auxiliary bed provided only above one of the front and rear needle beds sandwiching the needle bed 14, but also from above both needle beds. It can be effectively obtained even when the loop pressers 20 are inserted respectively. 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, the action of pushing the stitches downward, which is performed by the movable sinker 16 in this embodiment, may be performed by such a knitting member. Also, it is possible to add a knitting member having a new function.

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

Claims (4)

A flat knitting machine having at least a pair of needle beds facing each other with a needle bed therebetween, and including a plate-like sinker body having a function of forming a sinker loop, which is arranged at the tip of the needle bed on the needle bed side between knitting needles arranged on the needle beds. In the fixed sinker of the knitting machine,
At least one side surface of the sinker body is provided with a thickness gradient that increases along a predetermined direction of change from an upper start end toward a lower end when placed on the needle bed ,
The sinker body provided with the inclination has a degree-determining portion on which the knitting yarn is applied by the function of forming the sinker loop, at the leading edge on the tip side facing the needle gap, below the starting end in the changing direction, and at the terminal end. A fixed sinker characterized by having it above . 2. The fixed sinker according to claim 1 , wherein the thickness of the sinker body is also inclined on the other side surface of the one side surface. Both side surfaces of the one side surface and the other side surface of the sinker body are provided with support projections projecting toward the side surface of the knitting needle extending into the needle bed,
3. The fixed sinker according to claim 2 , wherein the slope of the thickness is provided on both sides of the portion excluding the support projection. a fixed sinker according to any one of claims 1 to 3 ;
at least a pair of needle beds facing each other across the tooth gap;
A knitting member that advances and retreats to the tooth gap and moves up and down at the tooth gap,
The plate-shaped sinker body of the fixed sinker is arranged at the tip of at least one needle bed on the tooth mouth side,
A flat knitting machine, wherein the knitting member is provided above at least the other needle bed.

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