JPH03124869A - Method and device for preparing weft - Google Patents

Abstract

PURPOSE:To select a sizing method based on the amount of the applied sizing agent to prepare a warp, by disposing two sizing rollers on an under the passageway of the warp, removing one of the sizing rollers from the passageway of the warp in correspondence to the king of the warp and applying another roller to the warp. CONSTITUTION:In a method for preparing a warp by traveling the warp 20 in one direction, passing the warp on the first sizing roller 16 and under the second sizing roller 2, passing the warp between a pair of sizing agent-squeezing rollers 3 and 3' and subsequently drying the sized warp by a drying means 4, the first sizing roller 16 is separated from the traveling passageway of the warp 20 and only the second sizing roller 2 is applied to the warp 20 to introduce the warp 20 into a sizing agent reservoir 15 disposed under the second sizing roller 2 for sizing when the dried sizing amount of the warp 20 is required to be >=4wt.%, while the second sizing roller 2 is separated from the passageway of the warp 20 to bring the warp 20 into contact with only the first sizing roller 16 and hot water is charged in the reservoir 15 to apply steam to the sizing agent-squeezing rollers 3 and 3' when the dried sizing amount of the warp 20 is required to be <=4wt.%.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a warp preparation method for preparing multifilament yarns such as polyester yarns as warp yarns for textiles, and an apparatus used therefor.

(Prior art) When preparing multifilament yarns with a number of entanglements of 40 or less per meter as warp yarns, a sizing process is performed to supply a sufficient amount of sizing agent to the yarns using a device as shown in Fig. 7. (For convenience, this method is referred to as the "full-scale sizing method.")

In the figure, 1 is a sizing agent supply tank that stores liquid sizing agent, 2 is an immersion roller that introduces the yarn into the sizing agent supply tank 1 and applies sizing, and 3.3' is a sizing agent after passing through the immersion roller 2. A pair of glue squeezing rollers squeezes the thread from above and below to squeeze out excess glue. These three rollers 2, 3.3'
Of these, the immersion roller 2 and the lower glue squeezing roller 3' are immersed in the glue layer in the glue supply tank 1, and during operation of the device, the roller surfaces of the three rollers 2, 3, and 3' are Glue is constantly supplied and the product remains wet. Further, 4 is a drying chamber, and 5.6 is a drying cylinder, both of which have built-in heaters, and are used to dry the glued yarn. 7 is a beam that winds up the warp threads.

In the above-mentioned full-scale sizing method, a glue with a pure concentration of 10 to 13% by weight (hereinafter referred to as "%") is usually used, and the glue is applied so that the amount of glue adhered after drying is 4% or more. will be held.

However, although the full-scale sizing method described above has a large amount of sizing agent attached and sufficient warp convergence, the energy cost required for drying is high, and the drying conditions are harsh, resulting in large thermal damage to the yarns, resulting in poor quality of the resulting fabric. There was a problem with the texture.

Therefore, the applicant has decided to
We have developed a simple sizing method that causes less thermal damage and have already applied for it (special training 1983, 177745, 1983).
(filed on July 15, 2015). This simple sizing method
As shown in the figure, the yarn is passed in contact with the upper part of the sizing roller 11 immersed in the sizing agent layer in the sizing agent supply tank 10, and a special sizing agent with a high purity concentration is applied to the yarn. The glue is squeezed between two glue squeezing rollers 12 placed opposite each other, then dried in a short mini-chamber 13, and wound onto a beam 7. According to this method, it is possible to supply the required minimum size agent to the yarn to provide good convergence.

Moreover, the yarn has good drying properties, and a woven fabric with good texture and little thermal damage can be obtained.

[Problem to be solved by the invention]

However, since the above-mentioned simple sizing method suppresses the amount of glue attached, it has been found that when applied to yarns with a small number of entanglements, for example, yarns with 20 or less entanglements, convergence becomes insufficient. Therefore, for such threads,
It is desirable to use the full-scale sizing method to increase the adhesion amount of sizing agent to 4% or more, and to meet this requirement, it is necessary to use either the above-mentioned simple sizing method or the full-scale sizing method depending on the type of yarn. However, since the sizing device takes up a lot of space, it is difficult to install the full-scale sizing device and the simple sizing device together and use them separately in a factory with limited space.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a warp yarn preparation method and a device used therein, in which a single device is used for full-scale sizing and simple sizing depending on the type of yarn.

[Means for Solving the Problems] In order to achieve the above object, the present invention has the following features: While running the thread in one direction, the thread passes through the upper side of the first gluing roller,
Furthermore, in the warp preparation method in which the warp threads are passed under a second sizing roller and then passed between a pair of upper and lower sizing rollers to a drying means, the amount of sizing agent adhered to the threads after drying is 4% by weight.
In the case of setting above, the first sizing roller is removed from the thread travel path, and the second sizing roller is activated to transfer the thread to the second sizing roller and the pair of upper and lower sizing rollers. When sizing is performed by introducing the sizing agent into a storage tank provided at the bottom of the yarn, and when setting the amount of sizing agent adhering to the yarn after drying to be less than 4% by weight, the second sizing roller is connected to the yarn. The thread is removed from the running path and the first sizing roller is activated to cause the yarn to pass in contact with the sizing roller, and at the same time, warm water is stored in the storage tank to cause water vapor to rise around the sizing roller. The first gist is a method for preparing warp yarns as described above, which includes: a first sizing roller provided under the running yarn;
a sizing agent supply tank that supplies sizing agent to the lower part of the first sizing roller; a first vertical movement means that can integrally move the first sizing roller and the sizing agent supply tank up and down; a second gluing roller provided on the downstream side of the first gluing roller and above the traveling yarn; and a second vertical movement means capable of moving the second gluing roller up and down; A pair of glue squeezing rollers are provided on the downstream side of the second gluing roller in a vertically opposed manner, and a sizing agent or The second gist is a warp preparation device including a hot water storage tank and a yarn drying means provided downstream of the glue squeezing roller.

[Effect]

That is, in the present invention, a first sizing roller is provided below the thread running path, a second sizing roller is provided above the thread running path, and one sizing roller is adjusted depending on the type of thread. is removed from the thread travel path and the other sizing roller acts on the thread, allowing selection of either the full-scale sizing method or the simple sizing method. When the device is used for the simple sizing method, the size agent storage tank used in the full-scale sizing method is not needed, so warm water is put into this storage tank instead of the size agent to create water vapor around the size squeezing roller. This allows dew to form on the surface of the glue squeezing roller, preventing the threads from sticking.

Next, the present invention will be explained in detail based on examples.

〔Example〕

FIG. 1 shows an embodiment of the warp preparation device of the present invention. This device includes a storage tank 1.5 corresponding to the conventional glue supply tank 1,
It is provided with an immersion roller 2 and a pasting roller 3, 3' which are arranged above this storage tank 15 and are similar to the conventional ones. On the upstream side of the storage tank 15 and below the yarn, a sizing port 16 and a sizing agent supply tank 17 for supplying sizing agent to the sizing roller 16 are installed vertically in an integral manner. Mounted and movable. Other configurations are the 7th
It is similar to the device shown in the figure, and the same parts are given the same numbers.

The immersion roller 2 of the above device can be moved up and down by an air cylinder.

This mechanism is used as is, as in conventional sizing devices, the thread hook was provided to raise the immersion roller 2 upward when the device was stopped in an emergency.

On the other hand, the gluing roller 16 and the gluing agent supply tank 17
The mechanism for moving up and down was developed especially for this device, and is shown in FIG. 2, which is a view taken along the line A-A' in FIG. That is, the roller shaft 16a of the gluing roller 16 protrudes outward from the left and right side surfaces of the gluing agent supply tank 17, and is rotatably supported between the left and right guide walls 18 via bearings 19. And this left and right guide wall 1
Nuts 21 are attached to the outer surface of each frame part 40 at two places, upper and lower.
Screw shaft 2 hanging from bracket 41 attached to
2 are combined. A bevel gear 23 is integrally attached to the upper end of each of the screw shafts 22 and meshes with a bevel gear 24 orthogonal thereto. Since the left and right bevel gears 24 rotate integrally via the shaft 24a, when the left handle 25 is rotated, the left and right screw shafts 22 rotate synchronously. This screw shaft 2
2, the left and right guide walls 18 to which nuts 21 are attached. Gluing roller 16° Gluing agent supply tank 17. A thread lifting pipe 3° and left and right cylinders 31, which will be described later, move up and down integrally.

Therefore, in this figure, the position of the sizing roller 16 is
By rotating the handle 25, the sizing roller 16 can be raised to a height where it comes into contact with the running yarn 20.

A motor 26 with a gear head is attached to the upper end of the right guide wall 18, and pulleys 27, 28
The hook is configured to provide rotational drive to the gluing roller 16 via a timing belt 29 that is passed therethrough. The rotation speed can be appropriately set by giving a predetermined instruction to an inverter (not shown) connected to the motor 26. Further, 30 is a thread lifting pipe arranged parallel to the gluing roller 16, and is adapted to be instantly lifted upward by left and right cylinders 31. This is used when the yarn 20 running on the sizing roller 16 is separated from the sizing roller 16. Further, a glue supply pipe 33 and a glue overflow pipe 34 are connected to the bottom of the glue supply tank 17, and both communicate with a glue tank (not shown).

On the other hand, when this device is used according to the full-scale sizing method, the storage tank 15 is used as a sizing agent storage tank by storing sizing agent as shown in FIG. When used according to this method, as shown in Fig. 3, the lower glue squeezing roller 3'
It is now used as a hot water storage tank by storing an amount of hot water that does not reach the tank. In other words, in the simple sizing method, the glue squeezing rollers 3 and 3' tend to dry out, so when the machine is stopped, the thread 20 sandwiched between the glue squeezing rollers 3 and 3' sticks to the roller surface, and when the machine is restarted, it becomes difficult to use. This may cause the thread surface to become fluffy or breakage to occur. Therefore, in order to prevent this, the storage tank 15
is used as a hot water storage tank, and water vapor is raised against the glue squeezing rollers 3, 3' to form dew condensation on the roller surface, thereby preventing the threads from sticking to the roller surface. Therefore, the storage tank 15 has a configuration as shown in FIG. 4 so that a preferable amount of dew condensation can be obtained when used as a hot water storage tank. That is, in the storage tank 15, there is an on-off valve 5.
1 and a steam introduction path 53 to which an automatic control valve 52 is attached, so that steam can be supplied as needed. A temperature controller 54 is connected to the automatic control valve 52, and when a predetermined temperature is set, an instruction is given to the automatic control valve 52 to open so that steam flows into the storage tank I5 until the temperature reaches that temperature. It has become. 55 is a temperature sensor that notifies the temperature controller 54 of actual hot water temperature data.

Therefore, according to this device, for yarns that have a small number of entanglements and need to be given sufficient convergence by sizing, the sizing roller 16 and the sizing agent supply tank 17 are used as shown in FIG. The immersion roller 2 is lowered so that it does not come into contact with the thread 20, and the sizing agent is stored in the storage tank 15.
is lowered to a position where its lower part is immersed in the glue layer in the storage tank 15, and gluing in the full-scale sizing method can be performed. According to this method, the amount of glue attached to the yarn after drying can be increased to 4% or more.

In addition, for yarns that have a large number of entanglements and have sufficient convergence even if the sizing is kept low, the sizing roller 16 and the sizing agent supply tank 17 are raised upward as shown in FIG. The upper part of the sizing roller 16 is brought into contact with the thread 20 from below, and the immersion roller 2 is raised upwards and away from the thread 20, and hot water instead of sizing agent is stored in the storage tank 15, thereby making the sizing process easier. can be attached. According to this method, the amount of glue attached to the yarn after drying can be suppressed to less than 4%.

Note that any type of sizing agent may be used for the above-mentioned gluing, but in particular, sizing agent whose main ingredients are sizing agent and oil agent,
It is preferable to use a high-concentration paste with a purity concentration of 15 to 25% (conventional adhesives have a purity concentration of 10 to 13%). In other words, according to the research conducted by the present inventors, increasing the pure concentration of the sizing agent reduces the amount of sizing agent attached to the yarn, making it easier to dry, and making it possible to relax the drying conditions. It has been found that the texture of the obtained fabric is good.Also, the rotation speed of the sizing roller 16 can be increased to perform sizing, and the drying time can also be shortened, so the process can be significantly speeded up. Furthermore, by increasing the concentration of the sizing agent, it is possible to prevent the sizing agent from spoiling and has the advantage of allowing the sizing agent to be used for a long period of time.However, if the concentration of the sizing agent is 25% If it exceeds this, the threads will adhere to each other during drying, resulting in poor warping.

In addition, the blending ratio of glue and oil is 9:1 to 9:1.
It is preferable to set the ratio to be 6;4. When the proportion of the oil agent exceeds the above range, weavability tends to deteriorate.

In addition, when using this device according to the simple sizing method, as shown in FIG.
A cover 6 is placed above the glue squeezing roller 3 so as to cover the upper surface thereof.
It is preferable to attach 0. In this way, the periphery of the glue squeezing rollers 3, 3' is covered by the cover 60 and the lower storage tank 15, so that the glue squeezing rollers 3, 3' are covered with the cover 60 and the lower storage tank 15.
It becomes easy to maintain uniform temperature and humidity of the atmosphere (the space surrounded by the cover 60 and the storage tank 15). As a result, an appropriate amount of dew condensation (2) can be uniformly generated on the surfaces of the glue squeezing rollers 3, 3'. The cover 60 is obtained, for example, by bending a sheet metal material downward into a U-shape, warping it, and then folding the left and right downwardly facing edges 61 inward, respectively. Note that the left and right edges 61 are marked with the
-x' arrow view), by providing an inclination such that the central part along the longitudinal direction is the highest position and gradually becomes lower towards both ends, excess water vapor can be absorbed inside the cover 60. This is preferable because dew condenses on the water and is discharged from both ends along the folded portions of the left and right edges 61.

[Effects of the Invention] As described above, according to the present invention, the contact-length gluing roller and the storage tank introduction type gluing roller (
Depending on the type of yarn, one of the sizing rollers is applied to the yarn (an immersion roller), and by removing the unnecessary sizing roller from the thread travel path, sizing can be performed according to the appropriate sizing method. . In this way, since sizing can be carried out according to the type of yarn, there is no possibility that excessive sizing will spoil the texture of the yarn, or that insufficient sizing will cause insufficient convergence. Moreover, since a single device is used for different purposes, it does not take up space in the factory. In addition, when the simple sizing method is selected, hot water is stored in the storage tank and steam rises around the glue squeezing roller, causing dew to form on the roller surface, which prevents the yarn from sticking. can be prevented.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram showing one embodiment of the device of the present invention, FIG. 2 is a view taken along the line A-A' in FIG. , FIG. 4 is a block diagram showing details of the peripheral part of the storage tank of the above device, FIG. 5 is a partial block diagram showing a modification of the above device, and FIG. 6 is a view taken along the line xx' in FIG. 5. 7 is a block diagram showing the apparatus used in the full-scale sizing method, and FIG. 8 is a block diagram showing the apparatus used in the simple sizing method. 2... Immersion roller 3, 3'... Glue squeezing roller 4... Drying chamber 5, 6... Drying cylinder 7... Beam 15... Storage +M 16.
...Gluing roller 17...Glue supply tank 21...Nut 22...Needle shaft 23, 24...Bevel gear 25...Handle Fig. 4

Claims (2)

[Claims] (1) While running the thread in one direction, it passes through the upper side of the first sizing roller, then the lower side of the second sizing roller, and then passes between a pair of upper and lower sizing rollers to the drying means. In the warp yarn preparation method, when the amount of sizing agent adhered to the yarn after drying is set to 4% by weight or more, the first sizing roller is removed from the yarn running path, and the second sizing roller is removed. The yarn is introduced into a storage tank provided below the second sizing roller and a pair of upper and lower sizing rollers for sizing, and the amount of sizing agent adhered to the yarn after drying is controlled. When setting it to less than 4% by weight, the second
The sizing roller is removed from the thread traveling path, and the first sizing roller is activated to cause the thread to pass through contact with the sizing roller, and at the same time, warm water is stored in the storage tank and water vapor is squeezed out by the sizing roller. A warp preparation method characterized by making the warp threads stand up around the periphery. (2) A first sizing roller provided below the running yarn, a sizing agent supply tank that supplies sizing agent to the lower part of the first sizing roller, and the first sizing roller and the sizing roller. a first vertical moving means capable of integrally moving the agent supply tank up and down; a second sizing roller provided downstream of the first sizing roller and above the running yarn; a second vertical moving means capable of moving the second gluing roller up and down; a pair of gluing rollers provided vertically opposite each other on the downstream side of the second gluing roller; Warp preparation characterized by comprising: a storage tank for sizing agent or hot water provided below the second sizing roller and the sizing roller; and a yarn drying means provided downstream of the sizing roller. Device.