JPH07197371A - Tension-relaxing mechanism in web-shrinking device - Google Patents

Abstract

PURPOSE:To provide a mechanism capable of sufficiently relax the tension of a web and enhancing the shrinkage factor of the web in a device used for carrying the long web in a team chamber filled with a high temperature steam and applying a tension-relaxing treatment to the web to shrink the web. CONSTITUTION:In a web-shrinking device used for carrying a long web 4 in a steam chamber 2 filled with a high temperature steam and applying a tension- relaxing treatment to the web to shrink the web, a web-pressing roller comprising a hard roll 35 and a soft roll 36 is disposed in the steam chamber, and linear grooves extending in the width direction of the web are disposed at fine pitches. The web is nipped and pressed between the hard roll and the soft roll.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention conveys a long cloth made of natural fibers, synthetic fibers or the like in a steam chamber filled with high temperature steam, and is subjected to a treatment for relaxing tension to shrink the cloth. The present invention relates to a tension reducing mechanism that is provided in a device and that can further reduce the tension of a fabric and increase the shrinkage rate.

[0002]

2. Description of the Related Art A long fabric made of natural fibers, synthetic fibers, etc. is transported in a steam chamber filled with high temperature steam,
A device which is subjected to a treatment for relieving tension so as to contract it is well known. In this apparatus, the fabric is vibrated at a high frequency to blow steam, or the fabric is rubbed and washed in a scouring liquid to relax the tension and shrink the fabric. When the cloth shrinks, the surface of the cloth becomes wrinkled, and the feel and the texture of the cloth are improved.

[0003]

However, in the conventional apparatus, the tension of the cloth may not be sufficiently relaxed and the shrinkage rate may be lowered depending on the conditions such as the material and thickness of the cloth.
Improvement was desired. In view of the above, the present invention provides a device for transporting a long fabric in a steam chamber filled with high-temperature steam, subjecting the fabric to a process for relieving tension, and contracting the fabric, thereby sufficiently relieving the tension of the fabric. The object is to provide a mechanism capable of increasing the shrinkage rate.

[0004]

In order to achieve the above object, according to the present invention, a process for conveying a long cloth in a steam chamber filled with high temperature steam to relieve tension in the cloth. In the cloth shrinking device for shrinking the cloth, a cloth pressing roller composed of a hard roll and a soft roll is provided in the steam chamber, and the outer peripheral surface of the hard roll has a linear shape extending in the width direction of the cloth. There is provided a tension reducing mechanism in a fabric shrinking device, wherein grooves are provided at a fine pitch, and the fabric is sandwiched between the hard roll and the soft roll and pressed.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1, 3 and 4 are side views showing a schematic configuration of a cloth shrinking device having a tension reducing mechanism of the present invention, FIG. 1 is a first embodiment, FIG. 3 is a second embodiment, and FIG. 4 shows the third implementation. 2 is a view taken along the line AA 'of FIG.

The cloth shrinking device of the present invention is used, for example, for a cloth made of natural fibers or synthetic fibers, particularly a knitted fabric made of a new synthetic fiber, and for relaxing the tension of the cloth and shrinking it. Is.

As shown in FIG. 1, a cloth shrinking apparatus 1 comprises a steam chamber 2 filled with high temperature steam, a scouring liquid tank 3 containing a scouring liquid for scouring a cloth, and a cloth 4 steamed. Conveying means 5 for conveying inside and inside the scouring liquid tank 3, scouring means 6 provided above the scouring liquid tank 3 for rubbing and washing the fabric 4 in the scouring liquid tank 3, and the scouring liquid tank 3 A shower 7 that is provided above the refining liquid tank 3 to discharge the refining liquid into the refining liquid tank 3, a pair of contracting means 8 that is provided in the conveyance path of the cloth 4 and that contracts the cloth 4, and an upper portion of the steam chamber 2. A pair of cloth pressing rollers 9 is provided at a substantially central portion for pressing the cloth 4 to relieve tension.

The steam chamber 2 comprises a metal housing,
An inlet 10 for carrying in the fabric 4 is provided at one side end, and an outlet 11 for carrying out the fabric 2 is provided at the other side end, and the inlet 10 and the outlet 11 are separated by the partition walls 12 and 13 to form the steam chamber 2 And the lower ends of the partition walls 12 and 13 are located in the refining liquid. As a result, the steam chamber 2
The inside of is sealed from the outside air and is in a sealed state. In this embodiment, the steam in the steam chamber 2 is about 105-
It is kept at 107 ° C.

The conveying means 5 comprises a plurality of conveying rollers 14
And a plurality of guide rollers 15 and an underwater conveyor 16 provided in the scouring liquid tank 3. Conveyor roller 1
Reference numeral 4 is a drive roller rotated by a motor, and guide roller 15 is a driven roller rotated by the cloth 4 being conveyed. The submersible conveyor 16 includes a pair of rollers 17 and 17, which are laterally spaced from each other, and rollers 17 and 17.
The belt 18 is stretched between them. Laura 1
One of the rollers 7 and 17 is connected to a motor, and when one roller 17 rotates, the other roller 17 and belt 18
Is designed to rotate.

The refining means 6 has a plurality of pressing members 19 which swing vertically and press the cloth 4 in the refining liquid tank 3. The shower 7 is arranged between the pressing members 19. The shower 7 is connected to a pump (not shown), and the pump causes the scouring liquid in the scouring liquid tank 3 to flow into the shower 7.
And is discharged from the shower 7 toward the cloth 4 in the scouring liquid tank 3. Further, a heater 20 is provided in the refining liquid 3 so as to heat the refining liquid to raise the temperature.

The shrinking means 8 includes a conveyor 21 for carrying the cloth 4, a vibration applying mechanism 22 for vibrating the carrying surface of the conveyor 21 at a high frequency, and a steam supply means 23 for blowing steam onto the cloth 4 carried by the conveyor 21. It consists of The conveyor 21 is composed of a pair of rollers 24, 24 arranged at intervals in the lateral direction, and a belt 25 stretched between the rollers 24, 24 and made of a metal net. One of the rollers 24, 24 is connected to the motor, and when one roller 24 rotates, the other roller 24
Also, the belt 25 is adapted to rotate. As shown in FIG. 2, the vibration applying mechanism 22 includes a rod-shaped member 26 and a pair of vibration generators 27, 27. Bar-shaped member 26
Both ends of are supported by bearings 28, 28 outside the steam chamber 2, and the upper portion of the rod-shaped member 26 is in contact with the lower surface of the belt 25. The bearing 28 is attached to a bracket 29 fixed to the side wall of the steam chamber 2 via springs 30. The vibration generator 27 is configured to generate vibration by rotating a weight, and is connected to the lower end of the bearing 28. When the vibration generator 27 is driven, the bearing 28 vibrates at a high frequency and a rod-shaped member is formed. The belt 25 vibrates via 26. The steam supply means 23 are provided above and below the belt 25, and steam is jetted downward from the steam supply means 23 above.
The cloth 4 on the belt 25 is blown, and steam is jetted upward from the steam supply means 23 below, passing through the mesh of the belt 25 and the cloth 4 on the belt 25.
It is designed to be sprayed on the back side of.

Above the scouring liquid tank 3, beaters 31 and 32 are provided. The beater 31 is for hitting the cloth 4 before entering the scouring liquid tank 3 so as to be folded into a fold, and has a plurality of bar members 33 that rotate around a central axis. When it hits the cloth 4, the cloth 4 has a crease, and the cloth 4 can be folded in a fold shape. When the foldd cloth 4 enters the scouring liquid tank 3, it becomes a pleated shape with a short pitch as shown in FIG. The fabrics 4 coming out of the scouring liquid tank 3 are overlapped with each other in a fold shape.
Is for hitting and loosening the cloth 4 in such a state. The beater 32 has a plurality of bar members 34 that rotate around a central axis, and the bar members 34 strike and loosen the cloth 4.

The cloth pressing roller 9 is a hard roll 3 made of metal.
5 and a rubber soft roll 36, and a hard roll 3
5 and the soft roll 36 are arranged so that the outer peripheral surfaces thereof face each other. On the outer peripheral surface of the hard roll 35, linear grooves 35a extending in the width direction of the fabric 4 (direction substantially perpendicular to the conveying direction of the fabric 4) are engraved at a pitch of about 1.5 mm. The hard roll 35 is rotated by a motor, and when the fabric 4 is passed between the hard roll 35 and the soft roll 36 to rotate the hard roll 35, the soft roll 36 is rotated accordingly. There is. Cloth 4
Is pressed by the convex protrusion formed by the linear groove 35a on the outer peripheral surface of the hard roll 35, and the outer peripheral surface of the soft roll 36 is elastically deformed so as to absorb the deformed cloth 4. As a result, the warp yarns extending in the length direction of the fabric 4 are deformed in a zigzag shape, and the fabric 4 easily contracts in the length direction. The cloth pressing roller 9 provided in the upper part of the steam chamber 2 is arranged such that the outer peripheral surface of the hard roll 35 contacts the back surface of the cloth 4, and the cloth pressing roller 9 provided in the center of the steam chamber 2 is hard. The outer peripheral surface of the roll 35 is arranged so as to contact the surface of the fabric 4. Further, in this embodiment, the pitch of the linear grooves of the cloth pressing roller 9 provided above is different from the pitch of the linear grooves of the cloth pressing roller 9 provided below. This is preferable because it is possible to prevent moire from occurring on the fabric 4.

Next, the operation of the cloth shrinking device 1 configured as described above will be described. First, the cloth 4 is guided by the conveying roller 14 and the guide roller 15, and the entrance 10
It is carried into the steam chamber 2 via the and is conveyed toward the contracting means 8. Before the contracting means 8, the back surface of the cloth 4 is pressed by the hard roll 35 of the cloth pressing roller 9 provided in the upper part of the steam chamber 2, the tension of the cloth 4 is relieved, and the cloth 4 is easily contracted. When the cloth 4 reaches the upper contracting means 8, the vibration generator 27 is driven, the rod-shaped member 26 and the belt 25 vibrate, the cloth 4 on the belt 25 vibrates at a high frequency, and the cloth 4 is arranged above and below the belt 25. Further, high-temperature steam is blown from the steam supply means 23 toward the cloth 4 on the belt 25, the warps and the wefts are heated and softened, and the tension of the cloth 4 is further alleviated and the cloth 4 is easily contracted. Next, the surface of the cloth 4 is pressed by the hard roll 35 of the cloth pressing roller 9 provided in the central portion of the steam chamber 2, and the same tension relaxing process is performed by the contracting means below. The cloth 4 that has passed through the contracting means 8 is a beater 31.
Is struck by the bar member 33 of the above, and is sent off in a wavy manner, and when it enters the refining liquid, it becomes pleated, and the underwater conveyor 1
6 is conveyed. Then, the scouring liquid is discharged from the shower 7 toward the cloth 4, and the pressing member 19
Swings in the vertical direction and presses the cloth 4, and the cloth 4 is kneaded and washed with the scouring liquid. As a result, various impurities contained in the cloth 4 are removed, and the cloth 4 is refined. Further, the tension of the cloth 4 is further alleviated, and the shrinkage ratio is increased. The cloth 4 discharged from the scouring liquid tank 3 is hit by the bar member 34 of the beater 32 and is loosened so as not to overlap. Then, the cloth 4 is carried out of the steam chamber 2 via the exit 11 by the conveying roller 14 and the guide roller 15.

Next, a second embodiment of the present invention will be described. In the cloth shrinking device 37 shown in FIG. 3, a steam chamber 38 filled with high-temperature steam, a conveying means 39 for carrying the cloth 4, a pair of shrinking means 40 for shrinking the cloth 4, and the cloth 4 A pair of cloth pressing rollers 41 for pressing to relax the tension, the cloth 4 is conveyed by the conveying means 39, both sides are pressed by the cloth pressing roller 41 to reduce the tension, and the contraction means 40 contracts. It is designed to let you. Shrinking means 40 and cloth pressing roller 41
The construction of is the same as the construction of the contracting means 8 and the cloth pressing roller 9 of the apparatus of the first embodiment. The cloth shrinking device 37 does not include the scouring liquid tank 3, the scouring means 6, the shower 7, and the beaters 31 and 32 provided in the device of the first embodiment, and the cloth 4 is scoured by the scouring liquid. There is no step to do.

Next, a third embodiment of the present invention will be described. In the cloth shrinking device 42 shown in FIG. 4, a steam chamber 43 filled with high-temperature steam, a scouring liquid tank 44 containing a scouring liquid for scouring the cloth, and a conveying means 45 for conveying the cloth 4 are provided. And a scouring means 46 for rubbing and washing the cloth 4 in the scouring liquid tank 44 with the scouring liquid, and a scouring liquid tank 44.
Shower 47 that discharges the scouring liquid toward the cloth 4 inside
And a cloth pressing roller 48 for pressing the cloth 4 to relieve the tension. The cloth 4 is conveyed by the conveying means 45, and one side of the cloth 4 is pressed by the cloth pressing roller 48 to relieve the tension. Then, the refining means 46 refines and contracts. Scouring liquid tank 44, scouring means 4
6. The structure of the cloth pressing roller 48 is the same as that of the refining liquid tank 3, the refining means 6, and the cloth pressing roller 9 of the apparatus of the first embodiment. Further, in this apparatus, the cloth 4 is beaten with a beater 49 to form a fold before entering the scouring liquid tank 44.
4 is adapted to be beaten and loosened by a beater 50. The beater 49 has the same structure as the beater 31 of the apparatus of the first embodiment, and the beater 50 is the same as that of the apparatus of the first embodiment. It has the same configuration as the beater 32. The cloth shrinking device 42 does not include the shrinking means 8 provided in the device of the first embodiment.

[0017]

According to the tension reducing mechanism of the present invention, the fine linear grooves provided on the outer peripheral surface of the hard roller deform the warp yarns extending in the length direction of the cloth in a zigzag shape, and the cloth becomes long. It tends to contract in the direction. Therefore, the cloth can be shrunk at a high shrinkage ratio regardless of the conditions such as the material and the thickness, and the cloth with stable quality can be obtained. In addition, since the texture of the contracted fabric becomes grainy, the texture is improved and the texture is improved, so that the commercial value of the fabric can be increased. Therefore, it can be said that it is extremely effective.

[Brief description of drawings]

FIG. 1 shows a first embodiment of the present invention, and a cloth shrinking device 1
It is a side view which shows schematic structure of.

FIG. 2 is a view taken along the line A-A ′ of FIG.

FIG. 3 shows a second embodiment of the present invention, and the cloth shrinking device 3
It is a side view which shows schematic structure of 7.

FIG. 4 shows a third embodiment of the present invention, in which a cloth shrinking device 4 is provided.
It is a side view which shows the schematic structure of 2.

[Explanation of symbols]

 1 Fabric Shrinking Device 2 Steam Chamber 4 Fabric 9 Fabric Pressing Roller 35 Hard Roll 36 Soft Roll

Claims (3)

[Claims] 1. A fabric shrinking device for transporting a long fabric in a steam chamber filled with high-temperature steam, applying a treatment to reduce tension to the fabric, and shrinking the fabric, wherein: In, a cloth pressing roller consisting of a hard roll and a soft roll is provided, on the outer peripheral surface of the hard roll, linear grooves extending in the width direction of the cloth are provided at a fine pitch, and the cloth is the hard roll and the A tension relieving mechanism in a fabric contraction device, characterized in that it is sandwiched between soft rolls and pressed. 2. The cloth shrinking device includes a pair of the cloth pressing rollers, one of the cloth pressing rollers is arranged such that an outer peripheral surface of the hard roll is in contact with one surface of the cloth, and the other of the cloth pressing rollers is arranged. The tension reducing mechanism in the cloth shrinking device according to claim 1, wherein the cloth pressing roller is arranged such that an outer peripheral surface of the hard roll is in contact with the other surface of the cloth. 3. The pitch of the linear grooves of the hard roll of the one fabric pressing roller is different from the pitch of the linear grooves of the hard roll of the other fabric pressing roller. A tension relaxing mechanism in the fabric shrinking device according to item 2.