JPS63112757A - Needle plate of linear type knitting machine - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in the needle plate of a straight stockinette machine, and it is designed to improve the needle plate of a straight-line knitting machine, and is capable of using extremely strong and almost inelastic threads that require a large force in the fabric tensioning device. The present invention relates to an improvement in order to obtain a higher resistance to wear of the parts of the needle plate caused by the reciprocating movement of the needles in the bed or slot of the needle plate of the linear stockinette machine used.

As is known, the needle plate of the straight stockinette motive has
A plurality of passages, slots or beds are provided for the passage of the needles through which the needles reciprocate during operation of the knitting machine. Currently, extremely strong and almost inelastic yarns are used, especially new man-made fibers and blends of man-made and natural fibers, and the possibilities for incorporating electronic control of the knitting machine programs are practically limitless. For a new sample in the range of 1 km, the knitting parts of knitting machines of the above-mentioned type are operating at the limits of their potential and permissible wear. This results in premature wear of the needle plate or bed of previously known knitting machines and the bottom of the main knitting mechanism in which the needles pass through the slots or the side wall of the bed, which results in play in the knitting machine; A problem has arisen in which the knitting machine stops working reliably.

This wear occurs very markedly in the upper part of the needle plate, and the reason for this is that the cross-section of the slot in the upper part of the needle plate is under pressure, and when the needles reach their highest position, they are subjected to traction forces inwardly of the knitting machine. The needle is moved downward by the tensile action of the stockinette stitches that form the fabric.

In view of this problem, the most appropriate solution, in principle, would be to make the needle plate from a material whose hardness is higher than that of the needle. Although this solution is acceptable from a theoretical point of view, in practice it is difficult to manufacture large and complex components such as needle plates from hard materials under the above-mentioned circumstances. This is impossible because the manufacturing cost is high and it is not well received in the market.

The present invention seeks to provide a solution to the problem which is not unsatisfactory from an operational point of view, but is also quite satisfactory from an economical point of view.

Therefore, according to the present invention, a ruler is provided on each needle plate, and multi-slot holes are cut in advance in this ruler, and the existing slots are formed in the needle plate of the slot T-knitting machine. The slots of the needle plate and the slots of the ruler are configured to be completely continuous by matching not only the cross-sectional shape but also the path or boss.

The material used to make the ruler should have a hardness approximately twice that of the material used to make the needle plate, which provides ideal durability and yield. .

The ruler is mounted with a guide pressure formed in the needle plate at the high points where the greatest wear of the needle plate occurs.

According to another refinement of the invention, for example, the ruler is replaceably mounted in its guide so that a new ruler and container can be replaced before the ruler finally wears out.

Therefore, according to the present invention, on the one hand, the wear of the needle plate is reduced to increase the service life of the needle plate;
On the other hand, when it wears out, only the ruler needs to be replaced, and there is no need to replace the entire needle plate, as in previously known knitting machines, which is therefore economical; It is not expensive from the standpoint of materials or replacement parts, and is economical from the standpoint of the labor required to perform the replacement.

Next, one embodiment of the present invention will be explained with reference to the drawings.

7 and 2, the needle l is in its highest raised position on the passage or bedcoat of the needle plate J, corresponding to stockinette knitting and transfer, respectively! lt-showing.

In order to reach this position, the needle, during its up-and-down movement, must overcome the resistance to the up-and-down movement exerted by the fabric hanging from the needle; is constantly acting in a downward direction, as shown by arrow G in Figures 1 and 1.

This downward traction of the cloth is the sieve hole or bed through which the needle passes.
is the reaction due to the vector component of the force on the sidewalls and bottom of, especially in its highest area.

Therefore, according to the present invention, the highest position 1 of the one-needle plate 3 is
1 is provided with a ruler 5, and a slot 6 is bored in the ruler 1, which is completely continuous with the slot of the needle plate 3, and the both side walls thereof are bored, as shown by 7'.

The ruler 5 is made of a hard material (similar to the material of the needle plate 3), and this ruler allows the slot or bedcoat, A
Virtually all effects of friction of the needle l reciprocating along K are supported. Since the ruler 5 is made of an extremely hard material, the side walls and rims of the slots or beds, 6, but not the bottom 6, are subject to wear over a much longer period of time than a conventional needle plate would withstand. withstand

In addition, as shown in an enlarged view in Figure 2, the ruler S has a dovetail cross-sectional shape, and a guide groove 8 with a dovetail cross-sectional shape is provided in the needle plate 3 in order to make the needle plate 3 easy and easy to install. The guide #8P:jK ruler 5 is fixed so that it does not move in the length direction using fixing pins that pass through holes io provided at both ends of the ruler 5.

In the plan view of FIG. 3, the stockinette knitting position of the needle is shown on the left, and the transfer position is shown on the right. Also, as shown diagrammatically in this figure, the inclination of the stitch II of the fabric and the stitch 1/ towards the inside of the knitting machine determines the lateral force of the needle during its movement in the corresponding bed or slot. This determines its tendency to wear not only from its bottom but also from its walls at the same time.

Therefore, according to the invention, these effects are absorbed by the perforated ruler 5, which due to its hardness minimizes the wear and also, by being replaceable, practically extends the service life of the needle plate. It is made permanent.

Since the above explanation will enable a person skilled in the art to understand the structure of the present invention and its advantages, further explanation is deemed unnecessary.

The materials, shapes, dimensions and arrangement of the various components of the device of the invention may vary in the concave circle of the invention.

The terms described in this specification should be interpreted in a broad sense and should not be limited by the terms themselves.

[Brief explanation of the drawing]

7 is a schematic cross-sectional view of the needle plate of a straight stockinette machine according to the invention, showing the needles in the stockinette position and in the highest raised position; FIG. FIG. 3 is a plan view of a needle plate provided with a filled ruler according to the present invention; FIG. 9 is a sectional view of the needle plate shown in FIG. 3; FIG. Figure 6 is a partially enlarged view showing the shape of the ruler installed in the slot. 100. Needle Ko00. Bed 300. Needle plate da00. Cloth S, 1. Ruler-608, Amendment to the ditch procedure (released) October 21, 1988

Claims (1)

[Claims] 1. In the needle plate of a linear stockinette knitting machine that uses yarn that is extremely strong and has almost no elasticity and requires a large force to pull the fabric, the needle plate in the bed or slot of the needle plate In order to prevent wear caused by the needles and to prolong the service life of the needle plate, the elevated area of each needle plate is provided with an exchangeable ruler in said slot, adapted to the bed for the corresponding set of needles. A needle plate for a linear stockinette knitting machine, characterized in that a ruler is provided with a groove that matches the shape, size and position of the groove in the needle plate so as to be completely continuous with the needle plate. 2. The needle plate for a linear stockinette knitting machine according to claim 1, wherein the ruler is made of a material that is considerably harder than the material of the needle plate. 3. The slotted ruler has a dovetail cross-sectional shape, and a guide groove with a dovetail cross-sectional shape corresponding to the needle plate is provided so that the ruler can be easily replaced. A needle plate for a linear stockinette knitting machine according to claim 1 or 2, wherein the needle plate is fixed by fixing pins that are passed through holes at both ends of the needle plate and are attached to the needle plate.