JP2929041B2 - Knitting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a knitting machine in which a down cam for forming a knitting needle is formed together with an up cam in a knitting machine.

[0002]

2. Description of the Related Art FIG. 5 shows a basic cam structure of a carriage for applying knitting motion to a knitting needle in a conventional flat weft knitting machine. The needle cam plate 1 of the carriage is provided with an ascending ridge 2 where a raising cam is formed, ridges 3 and 4 where a descending cam is formed, and a top hill 5 as a guard cam. The raised ridge 2 and the ridges 3 and 4 generate a reciprocating motion of the knitting needle 6 in the vertical direction, that is, in the longitudinal direction. Tenzan 5 prevents knitting needle 6 from rising more than necessary, and
A path for moving the bat 7 is made. The bat 7 is guided in this passage to raise the knitting needle 6 in the needle head direction, and when the bat 7 is raised to the knitting position in the knitting operation, the yarn is supplied to the hook at the tip of the knitting needle 6. When the knitting needle 6 descends, a stitch is formed while pulling the yarn.

FIG. 6 shows that the carriage shown in FIG.
When the knitting operation is performed by moving to the position shown in FIG. The bat 7 of the knitting needle 6 is guided by the sliding portion 8 on the slope of the stitch 3, and a downward pulling force is applied by the leftward movement of the stitch 3. The state in which the knitting operation is performed in this manner is shown in FIG.
Shown in The yarn 9 is supplied from a yarn feeder 10. The knitting needles 11, 12, 13, 14,... Are arranged at regular intervals of the needle bed. This arrangement is, for example, 25.4 mm (1
It is determined by a gauge expressed by the number of knitting needles per inch). The sinkers 21, 22, 23, 24, 25,... Are provided on both sides of the knitting needles 11, 12, 13, 14,. The yarn 9 drawn by the knitting needles 11, 12, 13, 14, ... is a sinker 21, 22, 23, 24, 25, ...
The tip is receiving strong resistance.

[0004]

The conventional peaks 3 and 4 as shown in FIG. 5 have a Vickers hardness of 700.
８００800 Hv high speed steel or the like. Such a material is almost the same as the bat 7 of the knitting needle 6, and there is little difference in hardness. The studs 3 and 4 must apply a force to the bat 7 from the sliding portion 8 to pull down the knitting needles 11, 12, 13, 14,... Therefore, large pressure and shearing force are applied to the surface of the sliding portion 8. Since the hardness difference between the butt 7 and the sliding portion 8 is small, the sliding portion 8 is easily worn. Further, since the materials of the butt 7 and the sliding portion 8 are similar, the sliding frictional resistance is large, and a large force for lowering the knitting needle 6 is required.

The yarn 9 is particularly thick, and the knitting needles 11, 12, 1
When the interval between 3, 14,... Is large, that is, when the number of gauges is small, the force for lowering the knitting needle 6 and pulling the yarn 9 increases, and when the bat 7 starts contacting the sliding portion 8. The impact force increases. In particular, when the knitting machine is automated and operated at high speed, the impact force and the friction force increase.

SUMMARY OF THE INVENTION An object of the present invention is to provide a knitting machine capable of increasing the hardness of at least a sliding portion and reducing abrasion and frictional resistance.

[0007]

SUMMARY OF THE INVENTION According to the present invention, a down cam for knitting a knitting loop having a predetermined stitch by lowering the knitting needle by sliding a bat of knitting needles along a retraction slope is provided. A stitch body of a knitting machine having a cam plate on which a stitch body can be attached and detached, and a knitting needle bat provided along a guide path between the stitch body and the bat and descending along a retraction slope of the stitch body. And a receiving cam that regulates the progress of the sliding member is integrally formed of a hard material having a hardness of 700 to 800 Hv, and at least a sliding portion of the drawn-in slope which comes into contact with the knitting needle bat is formed of a material having a hardness higher than the hard material. The knitting machine according to claim 1, wherein the main body is detachably stacked on the cam plate.
Further, the invention is characterized in that the sliding portion is formed of a material having a hardness higher than that of the hard material, is formed in a plate shape, and is affixed to a retracted slope of the stud body.

[0008]

[0009]

According to the present invention, the cam plate and the receiving cam are integrally formed of a hard material having a hardness of 700 to 800 Hv. The stud body is configured to be detachable from the cam plate and the receiving cam, and at least the sliding portion of the retracted slope for lowering the knitting needle by sliding the bat of the knitting needle is formed of a material having a higher hardness than the hard material. Is done. Such a sliding portion has a higher hardness than a knitting needle bat, so that it is less likely to be worn even when guided by sliding, and the frictional resistance is also reduced. The receiving cam regulates the downward movement of the knitting needle that descends along the retraction slope of the stud body. This can prevent a jump phenomenon in which the knitting needle descends more than necessary due to the inertial force of the descending movement. Also,
Since the mountain body is detachable each time the inclined slope is formed, it is easy to replace. When the gauge or the like is different, only the lowering cam can be replaced and the receiving cam can be used in common.

Further, according to the present invention, since a plate-like sliding portion is attached to the retracted slope of the stud body, the thickness of the hard portion can be increased to increase the durability.

[0011]

FIG. 1 shows an embodiment of the present invention in which a stud is mounted.
1 shows a schematic configuration of a carriage for operating a knitting needle such as a needle or a jack. On the needle cam plate 31,
A climbing mountain 32, dovetails 33 and 34, a heavenly mountain 35, and the like are provided. The stitches 33 and 34 can move along the slope of the climbing mountain 32, and the stitch, which is the roughness of the stitch, is determined according to the degree of descending. Degree 3 to decide this time
3, 34 are determined by the moving direction of the carriage. FIG. 1 shows a state in which the carriage moves in the left direction L among the movable left and right directions and the stitch is determined by the right steepness 33.

When the carriage moves in the left direction L in FIG. 1, the butt 37 of the knitting needle 36 first
Passes between the stud body 34a and the receiving cam 34b,
It hits the left slope of the mountain 32. The bat 37 moves along the slope of the mountain 32, and the knitting needle 36 rises in the needle head direction. The butt 37 of the raised knitting needle 36 is guided between the raised mountain 32 and the top mountain 35 and is guided along the sliding portion 38 of the stud body 33a of the right stud 33. The bat 37 is also lowered in the latter half where the bat 37 is guided between the uphill 32 and the heavenly mountain 35. At this stage, very little force is required, as only the supplied yarn is pulled down to the sinker. In the sliding portion 38 of the stud 33, it is necessary to draw the yarn further than the sinker portion, and a large force is required. The bat 37 is guided along the sliding portion 38, and the knitting needle 36 draws the thread.
The stitch 33 can be adjusted by displacing the stitch 33 along the slope of the crest 32 and adjusting the length of drawing in the thread.

When the bat 37 is lowered, its lowering movement is limited by the receiving cam 33b. Receiving cam 33
b is formed integrally with the cam plate 33c, and the stud body 33a is detachably attached to the cam plate 33c.

FIG. 2 is a cross-sectional view of the embodiment shown in FIG.
4 shows a typical configuration of the knitting needle 36 that can be moved downward. FIG. 2A shows a case where the knitting needle 36 is constituted by a needle 36a and a jack 36b. Two bats 37a and 37b are formed on the jack 36b. The bat guided by the carriage shown in FIG. 1 is a lower bat 37b. Thus, the knitting needle 36
Is composed of two parts, it is not necessary to replace the entire knitting needle 36 when the vertex portion 36c of the needle 36a or the like is broken, and only the needle 36a needs to be replaced.

FIG. 2 (2) shows the integral structure of the spatula needle 36d. In the case of this spatula needle 36d, the butt 37c formed on the needle stem is guided by the studs 33 and 34.

FIG. 3 shows a sliding portion 38 of the stud 33 shown in FIG.
Shows a state in which the bat 37 guided along the path passes between the stud body 33a and the receiving cam 33b. A guide path through which the bat 37 can pass is formed between the stud body 33a and the receiving cam 33b. As a result, an excessive downward movement of the bat 37 due to the inertial force is limited, and a jump phenomenon in which the stitch becomes large due to an excessive amount of downward movement of the knitting needle 36 is prevented. In FIG. 3, the stud body 33a is formed of a hard material such as cemented carbide, cermet, or ceramic having Vickers hardness about twice or more that of the conventional high-speed steel. Such materials include, for example, tungsten carbide WC and cobalt C
o-based cemented carbide, titanium carbide TiC-based cermet, alumina-based ceramic, and the like. Receiving cam 33b and cam plate 3
The integral part of 3c is formed of high-speed steel like the conventional studs. Since the receiving cam 33b and the cam plate 33c are formed integrally, the back surface 33d of the receiving cam 33b can be omitted. This makes it possible to effectively utilize the space in the carriage, arrange the cam mechanisms and the like at high density, and make the carriage small.

FIG. 4 shows a mounting structure of a stud body 33a which is a down cam of the stud 33 shown in FIG. The dovetail body 33a is provided with a knock hole 40 for positioning. The knock hole 40 is also formed at a position corresponding to a cam plate 33c formed integrally with the receiving cam 33b. By driving the knock pin 41 into the knock hole 40, the stud body 33a and the cam plate 33c are positioned. The cam plate 33c is provided with a screw hole, and the stud body 33a is fixed to the cam plate 33c by bolts 42.

If the bolt 42 is removed and the knock pin 41 is removed, the stud body 33a can be removed from the cam plate 33c. Although it is difficult to grind the dovetail 33 having the receiving cam 33b as shown in FIG. 4, since the receiving cam 33b is present, the polishing operation can be easily performed by removing the dovetail body 33a.

In the above embodiment, the stud body 33a
Is formed of a hard material, and the mountain body 33a is detachable at this time, but it goes without saying that the hard material described above may be attached only to the sliding portion 38. However, when the thickness of the hard material layer formed on the sliding portion 38 is small, there is a possibility that the hard material portion may peel off due to the impact force of the bat 37 or the frictional force when the bat 37 is lowered. is there. Therefore, even if only the surface of the sliding portion 38 is hardened to have the same hardness as when the hard material is attached, the durability becomes insufficient. On the other hand, it is a matter of course that a plate of a hard material having a certain thickness may be attached to the sliding portion 38. Further, although the raised ridges 32, the ridges 33 and 34, and the top ridge 35 are provided on the needle cam plate 31, it goes without saying that other cams may be provided. Further, as a matter of course, a plurality of cam devices as shown in FIG. 1 may be arranged so that a plurality of stitches can be knitted by one movement of the carriage.

[0020]

As described above, according to the present invention, the sliding portion of the retracted slope of the stud body can be formed of a material having a higher hardness than the other portions. Wear can be reduced, and the frictional force between the bat and the sliding portion can be reduced. Therefore, for example, even when the knitting operation is performed at a high speed, the wear of the studs is small and the frictional force is small, so that the force required for knitting can be reduced. Also, a receiving cam is formed integrally with the stud cam plate, which regulates the downward movement of the knitting needle bat descending along the retraction slope of the stud body,
It is possible to prevent a so-called jump phenomenon of the knitting needle which occurs when performing a knitting operation at a high speed. Since such a receiving cam has a smaller impact force and frictional force generated by the butt than the sliding portion of the retracted slope, even if the hardness is lower than that of the sliding portion, its wear is small. In addition, the main body where the retraction slope is formed can be attached to and detached from the cam plate. It can be done easily. Further, by adopting such a laminated structure, it is possible to satisfy required toughness and hardness of each part.

Further, according to the present invention, since the sliding portion having a high hardness of the retraction slope of the stitch body is formed in a plate shape and is attached to the retraction slope, the durability of the portion where the butt of the knitting needle abuts is improved. Can be done.

[Brief description of the drawings]

FIG. 1 is a plan view showing a schematic configuration of an embodiment of the present invention.

FIG. 2 is a side view showing a configuration of a knitting needle used in the embodiment shown in FIG.

FIG. 3 shows a stitch 33 and a knitting needle 3 in the embodiment shown in FIG.
6 is a cross-sectional view illustrating a configuration related to a bat 37 of FIG.

FIG. 4 is a plan view showing a configuration of a stud 33 of the embodiment shown in FIG. 1;

FIG. 5 is a plan view showing a basic configuration of a conventional carriage.

6 is a plan view showing a sliding state of the stud 3 and the bat 7 of the knitting needle 6 shown in FIG.

FIG. 7 is a plan view showing the state of the yarn when the knitting needle descends.

[Explanation of symbols]

 31 Needle cam plate 32 Raised mountain 33,34 degree mountain 33a, 34a Degree mountain main body 33b, 34b Receiving cam 33c Cam plate 35 Tenzan 36 Knitting needle 36a Needle 36b Jack 36d Vera needle 37 37a, 37b, 37c Butt 38 Sliding part 40 Knock Hole 41 knock pin 42 bolt

Claims (2)

(57) [Claims] 1. A stitch of a knitting machine having, as a stitch body, a down cam for knitting a knitting loop having a predetermined stitch by lowering a knitting needle by sliding a bat of knitting needles along a retraction slope. A cam plate to which the stud body can be attached and detached, and a receiving cam provided between the stud body and the bat guide path to restrict the knitting needle descending along the retraction slope of the stud body from moving down the bat. Are formed integrally with a hard material having a hardness of 700 Hv to 800 Hv, and at least a sliding portion of the drawn-in slope which is in contact with the bat of the knitting needle is formed of a material having a higher hardness than the hard material. On the other hand, the knitting machine is characterized in that it is detachably stacked and arranged. 2. The knitting machine according to claim 1, wherein the sliding portion is formed of a material having a hardness higher than that of the hard material, is formed in a plate shape, and is affixed to a retracted slope of the stud body. Degree mountain.