KR19990078574A - Healds for loom and method of surface processing for it - Google Patents

Abstract

It relates to a heald and a surface treatment method for raising and lowering warps in a weaving machine.

The heald of the present invention has a hole for fixing to the horizontal bar of the weaving machine at both ends in the longitudinal direction, and has a wide ear portion, a central portion formed with a through hole for fitting a slope, and an intermediate portion between the ear portion and the central portion. In the heald, the ear portion, the middle portion, and one side of the central portion is formed in a substantially straight line, the hole formed in the ear portion is formed to be biased by a predetermined distance from the center of the width to the opposite side of the straight line, The width of the central portion is characterized in that it is made equal to the width of the middle portion and less than half of the width of the ear portion.

Therefore, the thread is caught on the jaw formed in the heald and the friction is severely prevented and the problem of breaking is formed. Since the hole in the ear is formed at a distance from the center, the space between the threads between adjacent healds reduces the friction. have.

Description

Healds for loom and method of surface processing for it}

The present invention relates to a heald which is used in a weaving machine for weaving, and a surface treatment method thereof, and more particularly, to a heald which is made to improve durability in an improved shape and a surface treatment method thereof.

Weaving machines are machines for weaving a number of warp and weft yarns. The warp input from the weaving machine is largely divided into two groups, each group usually consisting of the same number of yarns. The slopes of these two groups are fixed to one fixture on the front that is installed at the same level and either forward or roll onto a roller. An already woven front part may act as a front fixing device for the threads, in which case the process is carried out by pulling or winding the woven part with another tool. In plan view, the wefts that make up the other group are alternately placed between the inclinations of the group. Each incline goes through a support to support the thread behind it and is finally wound up in a failure formed by winding up a number of strands. By moving the front fasteners to constantly wind or pull the slopes, the weaving process proceeds as the thread unwinds from the failure of the back.

In the process, the supports supporting the same group of slopes are at the same level and one group of these supports is raised simultaneously and one group of supports supported here is raised and the other group of supports is lowered simultaneously and supported by one group If you lower the slopes of the space between the one weft is sandwiched. Next, lower the inclined group on the upper side and raise the inclined group on the bottom so that the positions of the two inclined groups are reversed, and then insert the next weft into the space between them. Modern weaving machines weave at a very high speed, so the inclined group can move up and down very quickly, and when a space is formed in the middle, it must be very fast to weft in the space. In the method of weft weaving, water jet is used depending on the medium for carrying the weft. And the like using compressed air.

Pulling the warp yarns in the same way as above, raising and lowering the two warp groups to cross each other, and if the weft thread continues to be inserted into the space between the warp yarns of the two groups each time, the warp and weft yarns are interwoven together to form a fabric.

In the weaving machine in which such a weaving process is carried out, a member that supports and raises and lowers individual weft yarns from the back side is a heald. The heald is required by the number of individual inclinations, and the heald is divided into two groups as shown in Fig. 1 and fixed to different horizontal bars of the weaving machine, just as the inclinations are divided into two groups. Therefore, when the horizontal bar of the weaving machine goes up, the group of healds fixed to it goes up, and the slopes of the same group supported by the heald rise together. At the same time, the other horizontal bar is lowered from the weaving machine, and at the same time one end of the heald fixed to it and the inclined group fixed thereto.

2 is a view showing an example of a conventional weaving machine heald. The heald 10 is a narrow iron piece which is formed to one side and has a fixing hole 11 in the upper and lower portions so that the heald can be fixed to a horizontal bar which repeats the up and down movement of the weaving machine on the iron piece. The through hole 13 is formed so that it can support. In other words, the weaving heald has a wide hole, a central portion having a wide ear portion, a through hole 13 for fitting an inclination, and an ear portion and the central portion, having a fixing hole 11 for fixing to horizontal bars of the weaving machine at both ends in the longitudinal direction. It is provided with an intermediate portion between. And one side of the ear portion, the middle portion, and the central portion is formed to be located approximately in a straight line.

If weaving requires thousands or tens of thousands of warp yarns, we need more than thousands of warp yarns, so more than thousands are installed in a single weaving machine. In addition, the weaving of fabrics should be very tightly spaced, so the installation of healds should be very tightly spaced, even if they are wider than the space between them. The thickness of the iron piece that forms the heald is about 0.3 mm and the width and length vary depending on the type, but the width is about 5 mm and the length is about 30 cm to 15 cm. A typical example of the conventional one is about 30cm long as shown in FIG. 2, and there are holes for fixing the horizontal bars of the weaving machine, one above and one below, and both ends of the hole have a width of 5.5 mm, except for the hole formation. The part is less than half of the width. However, one side of the ear, center and middle forms a straight line, so the other side of the ear sticks out a little, and the middle and center are slightly inserted. When the healds are installed in the weaving machine, they alternately form a straight line. Even if the ear parts are in close contact with each other, the narrow middle part and the center part are installed to be spaced apart from each other. This arrangement is intended to give space for the inclinations to pass between the healds and consequently to be a way to allow for dense placement of the healds in consideration of the inclinations.

On the other hand, the center portion is supported by the inclination of the center portion is slightly wider than the middle portion for the convenience of hole formation, etc. For this purpose, the center jaw is formed. And the center portion in which the inclination is inserted is formed to be twisted by a certain angle compared to other parts of the iron piece forming the heald. This is to ensure that the through hole for fitting the inclination is easy to fit the incline because the heald is difficult to fit the incline only when the heald is fixed to the weaving machine horizontal bar. These materials are made of stainless steel to prevent rust during use and to achieve strength that can withstand wear caused by supported seals and breakage during weaving operations.

During the weaving process in the weaving machine, one of the two groups of healds is relatively forward, relative to the direction of the yarn's progression in the weaving machine, while the other healds are relatively backwards. Goes down. This can be a way to increase the placement density of the healds so that the healds can be densely woven because the healds are thicker than the heels, but they do not interfere with the healds of the other groups when the healds are raised. It can be thought that they have dropped each other.

Therefore, the slopes mounted on the front part heald are inserted into the through hole of the heald when seen from the front to the back, and are connected to the failure of winding the thread passing between the healds of the rear part. When the two groups of healds move in the opposite direction up and down, the threads also move up and down, passing through the heald and other healds, causing friction with the central side of the heald and the heald. In addition, the horizontal bars of the weaving machine and the holes at both ends of the heald are moved and rubbed.

Since the friction is repeated, the side edges of the center portion of the heald are rubbed while passing through the holes and other slopes of the heald and the thread, and may be broken in the process because they are not worn and cannot withstand the friction with the slopes. This wear also increases the size of the hole, reduces its width, and eventually causes the thread to break during the weaving process or degrade the quality of the woven fabric. Therefore, heald has a life span of about six months.

Therefore, in the weaving industry, there is a demand for healds that can be densely installed in consideration of the denseness of the warp, but also have durability and are formed so that the yarn is not easily broken during the weaving process.

An object of the present invention is to provide a new weaving heald which is formed to reduce the friction with the yarn during the weaving process, thereby reducing the loss of the process, and to increase the durability, and to provide a surface treatment method during the manufacturing process. It is done.

1 is a photograph showing a conventional type of heald installed on a horizontal bar of a weaving machine. As shown in the photograph, the heald is divided into two sets.

2 is a view showing an example of a conventional weaving machine heald.

3 is a plan view and a side view showing an embodiment of the heald of the present invention.

4 is a view showing a form in which the heald overlaps with the heald next to it when it is installed on the horizontal bar of the weaving machine.

5 is a view showing a schematic configuration of a barrel used in the surface treatment method of the present invention.

※ Explanation of symbols for main parts of drawing

10, 20: heald 11. 21: fixing hole

13,23 through hole 30: barrel

31: hoop 33: cylinder

35: crankshaft 36: eccentric part

38: spring 39: motor

Weaving heald of the present invention for achieving the above object has a hole for fixing to the horizontal bar of the weaving machine at both ends in the longitudinal direction, a wide ear portion, a central portion formed with a through hole for the inclined and the ear portion and the central portion In the heald, the ear portion, the middle portion, one side of the central portion is formed to be located in a substantially straight line, wherein the hole formed in the ear portion of the straight line in the center of the width The other side is formed to be biased by a predetermined distance, characterized in that the width of the central portion is made equal to the width of the middle portion and less than half of the width of the ear portion.

The problems associated with heald in the loom are 'how much can we reduce friction with the yarn' and 'how dense heald can be used at the same time'?

In the present invention, the central portion is formed to be twisted at an angle with respect to the plane formed by the intermediate portion so that the operator can easily incline the inclined hole through the heald, and unlike the conventional case, the jaw is missing from the central portion, so that the heald and the heald When the yarns passing between them come into contact with the side of the heald, the friction can be reduced to prevent the yarn from breaking and the heald wear out at the same time.

In addition, the installation of the hole in the ear portion at a predetermined interval to bend is to increase the space for the thread passing between the adjacent heald and heald when the heald is installed on the horizontal bar of the weaving machine. In addition to the holes installed in the horizontal bar of the weaving machine, there is also an auxiliary hole for use as a standard for repairing the heald when the hole is worn out and not properly installed.

The healdite surface treatment method of the present invention is characterized by comprising the step of putting the shaped heald into the surface treatment barrel (Barrel) with the abrasive and vibrating the barrel and the abrasive blasting (Blasting) process.

Barrel treatment generally means that the barrel is polished by inserting barrel stones and abrasives together with the member to be processed together with the member to be rotated or vibrated by mutual friction of the contents. Along with abrasives, leather, cloth, and polishes can also be put together to achieve a gloss finish.

Blasting is a method of machining a surface through friction by placing the member to be processed and blowing a relatively low particle abrasive together with air to the member to be abrasive against the surface of the member.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

3 is a plan view and side view showing an embodiment of the heald 20 of the present invention. It can be seen that the central portion is twisted at an angle for convenience of threading. In the center part, there is a through hole 23 through which the inclination passes, and the jaw portion formed in the prior art disappears, and the side edges form a straight line with the middle portion. The fixing hole 21 of the ear portion is formed 0.3mm away from the central axis of the heald and when installed on the horizontal bar of the weaving machine, since the entire straight portion is disposed alternately from side to side, as shown in FIG. (21) widens the space where the slope passes by twice as much as the deviation from the center.

Conventionally, in order to widen the heald and the heald to secure a space for the thread to pass through, the ear portion of the heald was used by arranging the convex and concave to form concave and convex. However, in the present invention, since the space through which the yarn passes can be formed through the above-described configuration, it is preferable to use it in a flat state because the close contact of the seed light becomes possible.

5 is a view showing a schematic configuration of a barrel 30 used in the surface treatment method of the present invention. Circular hoops 31 are arranged on both sides side by side, and both ends of about ten long cylinders 33 are fixed to both hoops 31 to form a large cylindrical barrel 30 as a whole. The cylinders 33 are blocked at the front and rear during the process and are formed at a diameter of about 10 cm and a length of about 40 cm longer than the heald. Cylindrical barrels 30, which are fixed to the hoop 31, are 40 cm in length and 50 cm in diameter, and the center is hollow and both ends are open, and the eccentric protruding from the crankshaft 35 into this space. Install the crankshaft so that part 36 passes.

When the crankshaft rotates while the motor 39 connected to the crankshaft 35 rotates, the eccentric portion 36 rotates while drawing a circle having a radius of about 10 cm, which protrudes from the center of the shaft. It hits the cylinders 33 of the installed barrel 30. On the other hand, since the barrel hoop 31 at both ends is fixed by the spring 38 and is suspended in the space, the barrel does not rotate together when the crankshaft 35 rotates and is irregularly vibrated due to the impact of the crankshaft. Let's do it. Each barrel of the barrel has a barrel size of 1mm to 3mm and a slightly larger grain size, and friction occurs between the healds or between abrasive materials such as healds and barrels and porcelain pieces, and the surface is polished by friction. . On the other hand, the inside of the cylinder contains leather, polish, etc. to make the heald surface smoother and more glossy.

The rotational speed of the crankshaft or the machining time may vary depending on the desired degree of machining, but in general, the rotational speed of the crankshaft is several hundred rpm (round per minute) and the machining time is several hours to obtain the maximum machining accuracy.

After the barrel processing, the heald is then passed through a blasting process for more precise surface treatment. In the blasting, the heald is suspended in the space and the compressed air is sprayed on the heald by using an air gun. The air gun is supplied with fine aluminum or glass powder along with the compressed air to mix the surface of the heald with the air. Colliding with, rubbing the surface finer and smoother. In a confined confined space, the powders do not escape, and once used, the powder is piled up at the bottom of the process space and reintroduced into the air gun with compressed air. It is effective and desirable for the healds to work consistently through the front of the compressed air.

On the other hand, the heald of the present invention is difficult to process by using the heat treated SUS 301H directly compared to the conventional heald is processed and heat treated using the SUS 420Z of the stainless material as a fabric, but the durability was used to make the durability much more outstanding in terms of durability In the conventional case, the life span of about 1.5 times is about 9 months compared to that of 6 months. This is partly due to the smooth processing of the surface to reduce friction with the seal, but the durability is mainly due to the change in the material.

When the heald of the present invention is used, the thread passing between the healds is caught by the jaws formed in the healds, thereby preventing the problem of severe friction and breaking, and since the holes in the ear are formed at a distance from the center, the yarns between adjacent healds are formed. Since this passing space is widened, processing for forming a space is unnecessary, and thus, adhesion between the healds can be increased. In addition, the durability of the material can be increased.

In addition, when the heald is used according to the surface treatment method of the present invention, friction with the yarn is reduced, so wear is reduced to increase durability and reduce lint or thread breakage of the yarn during the weaving process.

Claims (9)

It has a hole for fixing at both ends in the longitudinal direction and having a wide ear portion, a central portion formed with a through hole for the inclination and the middle portion between the ear portion and the central portion, the ear portion, the middle portion, In the heald which is formed so that one side of the center part is located substantially in a straight line, Heald of the weaving machine, characterized in that the hole formed in the ear portion is formed to be biased by a predetermined distance to the opposite side of the straight line in the center of the width. The method of claim 1, Heald of the weaving machine, characterized in that the width of the central portion is equal to the width of the middle portion and less than half the width of the ear portion. The method according to claim 1 or 2, Heald of the weaving machine, characterized in that the surface of the central portion is formed at a predetermined angle twisted with respect to the middle portion and the ear portion is further provided with an auxiliary hole separately from the hole. The method according to claim 1 or 2, The heald of the weaving machine is characterized in that the material of the heald is stainless steel SUS 301H. The method of claim 4, wherein A heald of the weaving machine, characterized in that the surface of the heald is barrel polished. A shaped heald surface treatment method comprising the step of putting the shaped heald into the surface treatment barrel together with the abrasive and vibrating the barrel and a blasting step of abrasive blasting. The method of claim 6, In the barrel step, heald surface treatment method, characterized in that in addition to the barrel and the abrasive stone polishing and polishing agent in the container further vibrating. The method according to claim 5 or 6, The heald surface treatment method, characterized in that the polishing of the blasting step using fine aluminum, glass powder. The method according to claim 5 or 6, The blasting step is a heald surface treatment method characterized in that for performing a uniform treatment for the heald to pass through the zone continuously while spraying compressed air and abrasives introduced into the air gun in a predetermined zone.