US3665531A

US3665531A - Washing of contaminated guide-roll and prevention therefrom in cloth treatments

Info

Publication number: US3665531A
Application number: US80404A
Authority: US
Inventors: Yoshikazu Sando; Hiroshi Ishidoshiro
Original assignee: Individual
Current assignee: Individual
Priority date: 1966-05-23
Filing date: 1970-10-13
Publication date: 1972-05-30
Anticipated expiration: 1989-05-30
Also published as: DE1785624B2; BE698758A; NL145473B; DE1635067B2; DE1635067A1; DE1785624A1; DE1635067C3; NL6707106A; FR1541680A; CH486926A; DE1785624C3; US3593353A

Abstract

A method of cleaning the surfaces of guiderolls used in treating and processing cloth is comprised of the steps of attaching lengths of guide cloths, which are provided with wiping surfaces on both sides, to lengths of the cloth being processed so that the guide cloth and the cloth being processed are continuously passed over the guiderolls. Dampening at least one or both of the guide cloth and the guiderolls so that the guiderolls are wiped clean as the guide cloths pass over them. Preferably, the guiderolls are reversed from the normal direction of rotation to assist in the cleaning operation.

Description

Unite States Patent Sando et al.

WASHING 0F CONTAMINATED GUIDE-ROLL AND PREVENTION THEREFROM IN CLOTH TREATMENTS Inventors: Yoshikazu Sando, 122-6 Nishihoma;

Hiroshi Ishidoshiro, 469 Wakayro, both 0 Wakayama-ken, Japan 1 Filed: Oct. 13, 1970 Appl. No.: $0,404

Related US. Application Data Division of Ser. No. 638,795, May 16, I967. Pat. No. 3,593,353.

Foreign Application Priority Data [56] References Cited UNITED STATES PATENTS 3,467,01 l 9/1969 Phleps et al ..1 18/70 Primary ExaminerWilliam i. Price Attorney-McGlew and Toren [57] ABSTRACT A method of cleaning the surfaces of guiderolls used in treating and processing cloth is comprised of the steps of attaching lengths of guide cloths, which are provided with wiping surfaces on both sides, to lengths of the cloth being processed so that the guide cloth and the cloth being processed are continuously passed over the guiderolls. Dampening at least one or both of the guide cloth and the guiderolls so that the guiderolls are wiped clean as the guide cloths pass over them. Preferably, the guiderolls are reversed from the normal direction of rotation to assist in the cleaning operation.

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INVEN'IgR. vosuumzu snuo BYIHRMH! Isl-005m R0 WWW/7m nrnuevs WASHING OF CONTAMINATED GUIDE-ROLL AND PREVENTION THEREFROM IN CLOTH TREATMENTS BACKGROUND OF THE INVENTION This is a division of application Ser. No. 638,795 filed May 16, 1967.

SUMMARY OF THE INVENTION In the resin treatment and the die processing of cloth, the cloth is dried or subjected to steaming, and in such operations, the guide rolls in he treatment chamber become extremely contaminated.

In carrying out the resin treatment and the die processing, the cloth is permeated with the requisite chemical liquid and it is passed through a treatment chamber. Therefore, in both the resin treatment and the dye processing of cloth, the material being used is applied to the cloth. At the same time, a part of the resin and the dye adheres to the guiderolls, and, as a consequence, the guiderolls become contaminated. Therefore, in such operations as dyeing, resin treatment, and baking, it often happens that there is a build up of the material being used on the surface of the rolls, especially on the parts of the rolls which the selvage parts of the cloth contact. As a result, resin and the other materials accumulate in a dry condition, and the processing of the cloth is hindered. This occurs because the parts of the rolls over which the cloth passes are not contaminated to any extent while the parts of the roll in contact with the selvage parts of the cloth are readily contaminated. Further, owing to the sideward deviation of the cloth, undesirable matter which happens to attach itself to such parts, becomes dried and secured to the rolls.

Therefore, guiderolls of this kind require frequent removal of the surface contamination and such removal is not free from problems because it is difficult to perform and requires considerable time. The hotflue roller dryer for adherence and color forming in dyeing is an example, the cloth, padded with the dye stuff, enters into the non-touch dryer or the roller dryer for intermediate drying, where the cloth is dried and when the drying reaches a moisture percentage of less than 32 percent, removal of the dyestuff stops and then the dyes'tuff adheres to the cloth.

During this process, the dyestufi adheres also to the rolls and some of these guiderolls become thoroughly contaminated.

Although these contaminated rolls can be wiped clean when they are hot and giving off plenty of moisture, however, this wiping is normally performed by an operator entering into the treatment chamber and, as a result, the temperature in the chamber must be lowered. This temperature lowering action increases the adhesion power of the contaminating matter and makes it difficult to remove stains. Consequently, it takes a long time to clean the guiderolls. (Conventionally, it has required l-4 hours.)

After the color change is completed, the temperature is raised to a predetermined level and the processing is begun. However, in this process a working efficiency of only about percent can be obtained. Even if the processing is performed at the risk of the generation of color difference, by regulating the processing speed in accordance with the rising temperature to increase the efficiency, the efficiency thus obtained is as low as percent.

Nevertheless, when, according to various specifications,

color changes are required as often as 15 times a day, efiicien cy of about 30 percent cannot be obtained by the above timeconsuming process. There is also the case where the operation of the machine is regulated in consideration of the treatment of the cloth, so that dyeing operations may be performed from a lightly dyed cloth to a deeply dyed one to afford a continuous treatment.

Buteven in such a case, provided that the process is suitably set, though the working efficiency may be partly improved, yet the total efficiency still remains low.

Further, contamination of the rolls used in such a continuous treatment is so severe that it requires at least some 4 hours to perform the wiping operation.

Moreover, in getting rid of the stains on the rolls, emery paper is usually used, however, such paper scratches the surface of the rolls and results in an increase of the roll contamination.

Further, in getting rid of its contamination, the roll is injured due to the necessity of workmen climbing on the roll to perform the wiping operation.

This invention is made as a result of research on a method wherein, in the high temperature chamber, automatic washing and wiping of the roll is performed in 2-3 minutes, with an object of overcoming such defects as unevenness of the products and loss of time, and the further object of decreasing labor cost, and simultaneously increasing efficiency.

According to the present invention, the cloth of each lot is connected with a guide cloth coated on both its surfaces with sponge rubber so that it is able to retain considerable amounts of water and, in washing, when changing of the color is effected, this guide cloth is also soaked with water and is placed in contact with the rolls, and is passed through the treatment chamber at the same speed as in the ordinary treatment operatron.

Whilethe guide cloth (blanket) enters into the chamber, and passes over the guiderolls, the guiderolls are successively reversed so that when one guideroll completes its reversing action, the succeeding guide roll begins its reversing action. The reversing of the guiderolls is carried out in a successive manner at definite intervals.

To increase the wiping efficiency, it is useful to furnish the adhering matter on the rolls with moisture and such material is made more easily removable by providing a vapor jet pipe at the position surrounded by the guide cloth (blanket).

In the present invention, the conventional problems are avoided by the use of such a guide cloth, and the actual working efiiciency can be increased up to -95 percent. Further in the present invention, the processing is made continuous by connecting the cloth being treated with a special guide cloth so that the treatment operation can be continued without interruption at each color change.

This is very advantageous in the case of various color arrangements.

The length of the guide cloth is sufficient, if it is long enough for the wiping to be completed; a length of m is enough if the treatment speed is GOm/minute to complete the wiping in 2 minutes and a length of m is enough if wiping requires 3 minutes.

Now, the above disclosure is concerned with the hotflue roller dryer in continuous dye processing, however, the case is quite the same for use with the roll in the steaming chamber of a pad steamer in the same continuous dye processing, and it is also efiective for the roll in the dry chamber in the continuous resin treatment, or for the roll in the baking (or curing) machine chamber in dyeing or in resin treatment.

Sufiicient washing effect is obtained by the washing method where the direction of rotation of the roll is reversed and sponges are attached to both surfaces of a guide cloth positioned in contact with the roll, or by passing an guide cloth, specially soaked with water through the contaminated rolls.

A water spring apparatus, for example, is provided at the entrance to the dryer to supply water to the guide cloth. Especially in the case of wiping the roll in the continuous high pressure steamer and the like, it involves a sizable loss of time and therrnoeconomy to keep the chamber at a high pressure at one time and then to lower the pressure and the temperature in the chamber for effecting the wiping action and then to increase the pressure and the temperature.

Contrary to this, the wiping method of the present invention using a guide cloth will enable the treatment to be carried out in a short time at a constant high temperature and with good results.

Another object of the present invention is to prevent the contamination of the roll surfaces by dye material, resin and other matter by keeping the surface temperature of the roll close to the temperature of the dew point of the atmosphere in the vicinity of the roll by passing a heating medium, such as water, heated air and the like, within the guide rolls to produce moisture just below the dew point on the surface of the roll.

The reason for maintaining the temperature on the surface of the roll close to the temperature of the dew point is that when the surface is heated above the temperature of the dew point, the contaminating matter sticks to the surface in a dry condition, and when it is cooled to a temperature less than the dew point, dew is produced and the resulting treated cloth would be unsatisfactory.

When the temperature on the surface of the roll is kept close to the temperature of the dew point, the surface of the roll is always in a wet condition and is maintained free from contaminants and the dew point moisture on the surface of the roll will not decrease the drying efficiency in the cloth processing operation. This occurs because the interior of the processing chamber shows considerable humidity even though dew is not produced. Also, when dirt adheres to the surface of the roll, especially to the roll parts contacted by the selvage portions of the cloth, it can easily be wiped off as the occasion demands.

Further, in the practice of the invention, if the surface of the guide roll is coated with a hard chrome plating to form a film thereon and to give a good mold releasing effect and to prevent surface injury, it will be more advantageous.

Conventionally, as the guideroll of this kind, a stainless steel roll or the like is used.

Further, the present invention offers a novel liquid bucket for the liquid dye which is absorbed into the cloth in the continuous dyeing process.

In conventional dyeing apparatus, the equipment has been stopped at each color change during dyeing, therefore, it has required considerable time to clean the interior of the liquid dye bucket. In this case, stopping the equipment (that is the continuous dyeing apparatus) means stopping not only the liquid bucket, but also stopping the subsequent drying machine.

In case the drying machine is stopped in this manner, it follows that either the temperature is increased or lowered. In either case, a heat loss will result.

The object of the present invention is to overcome the above difficulties and to provide a novel liquid tank having an opening at its bottom or a reversing means for enabling the removal of the liquid dye, the washing of the tank, and the addition of fresh liquid in a short time.

The various features of novelty which characterize the invention are pointed out with particularity in the claims annexed to and forming a part of this specification.

For a better understanding of the invention, its operating advantages and specific objects attained by its use, reference should be had to the accompanying drawings in which there is illustrated and described a preferred embodiment of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS In the drawings:

FIG. 1 is a section of a guide cloth having a blanket-like form;

FIG. 2 is a section in a hotflue chamber furnished with washing water jets or vapor jet pipes;

FIG. 3 is a view showing the relationship between the vapor jet pipes and the guide rolls and showing the vapor generating pipe line system;

FIG. 4 shows the driving means for the guiderolls;

FIG. 5 shows a front view, partly in section, of a guideroll used in the present invention;

FIG. 6 shows a side section of the arrangement illustrated in FIG. 5;

FIG. 7 shows a controlling system employed in the present invention;

FIGS. 8A and 8B show side and front views of wiping devices according to the present invention;

FIG. 9 is a sectional view of a wiping device; and

FIGS. 10 and 11 show vertical sections of alternate liquid tank arrangements, according to the present invention, containing the liquid dye which penetrates into the cloth in the continuous dye processing of the cloth.

DETAILED DESCRIPTION OF THE INVENTION FIG. 1 shows a section of a special guide cloth C (blanket) as aforesaid, where the width of the guide cloth is equal to the working width of the guideroll, and the guide cloth is made capable of wiping from one end to the other of the roll. Further, the guide cloth is coated on both sides with spongy materials D or similar materials which are effective in wiping the rolls while avoiding injury to their surfaces.

FIG. 2 shows a hot flue roller dryer provided with vapor jet pipes, wherein 1, 2, 3, 4, and 5 represent the upper and lower guiderolls and 6, 7, 8, 9, and 10 represent jet pipes.

Each jet nozzle is fitted to blow moistened adhesive material perpendicularly to the guide cloth or to the surface of the roll.

FIG. 3 shows the relationship between the rolls and the pipes, and the vapor generating pipe line, with l, 2, 3, 4, and 5 representing the guide rolls and 6, 7, 8, 9, and 10 representing the jet pipes.

Piping 11, shown partly in dot-dash lines in FIG. 3, represents a pipe arrangement for connecting the pipes 6 to 10. 13 shows a vapor valve. 14 shows the system wherein the vapor is spouted from an injector 12 to the pipe, regulating the opening degree in the water valve in such a way that more or less moist vapor is generated.

FIG. 4 shows a method of driving the guideroll l-5, wherein each roll is driven by a torque motor M with a potential regulator, and the rolls usually rotate in the normal manner, but in changing color they are reversed from one to another in a successive manner, by pushing an indicating button for reversal of rotation through a timer or relay.

FIG. 5 and FIG. 6 show the guideroll A, wherein the hotwater pipe 22 is inserted through the hollow roll body 21 with both ends closed, and in the pipe 22 situated in the interior of the roll 21, there are penetrating holes 23 suitably spaced, and at the same time, penetrating holes 23 are also bored in a partition 24 which divides the interior of the roll 21 so that hot water flows through the pipe 22 in the direction marked by the arrows and enters between the roll 21 and the pipe 22 through the penetrating holes 23, 23' and heats the surface of the roll 21.

FIG. 7 shows a controlling system in case the guideroll is arranged in a dryer chamber, wherein by means of a dew point detector, the temperature of the dew point in the drying chamber is detected, and by controlling the signal air which is supplied into the record regulator, the signal conveyed by No. 1, No. 2, and No. 3 signal lines regulates the temperature of the heater in the drying chamber, the exhaust volume of the exhaust fan connected to the dryer, and the temperature of the hot water flowing into the guideroll (not shown), respectively. Thus, by means of this controlling system, the temperature on the surface of the guideroll is kept at the temperature of the dew point of the air in the drying chamber. In case, the guideroll is arranged outside the chamber, the temperature of the dew point of the air in the vicinity of the surface of the guideroll is detected, and the temperature of the hot water flowing into the guide roll may be kept at the temperature of the dew point thereof.

FIGS. 8A, 8B, and 9 disclose wiping devices which are supplementally used, where the left and right wiping rolls B are arranged adjacent to the guideroll A in which hot water flows and these wiping rolls are mounted on roll arms 26 having a center 25, and by revolving the roll arms the wiping rolls are moved into contact with the part of the roll A which the selvage of the cloth contacts, and thus the surface of the roll A can be wiped out as the occasion demands.

The roll B comprises a pipe 27 on which a sponge layer 28 is wound and washing water circulated through'the pipe so that moisture is given to the sponge layer 28 through the penetrating holes 29. By pressing the roll B in the wet condition against the guideroll A, stains on the surface of the guideroll are wiped off.

Meanwhile, instead of the wiping device as mentioned above, the wiping of the guideroll may be effected by passing a guide cloth, having a sponge layer and positioned between each cloth lot or length, over the surface of the guideroll at the change of color in the dyeing operation.

As disclosed above, as contamination of the surface of the guideroll is effectively prevented, satisfactory products can be obtained, thus contributing to an improvement in quality, and making long continuous operation of the treatment process possible, with an improvement in working efficiency up to 90-95 percent.

Even when dirt happens to adhere to the surface of the guide roll, it can be eliminated easily by wiping without stopping the apparatus, thus ensuring economy of heat.

Next, an explanation shall be made of the liquid tank for applying dyeing liquid to the cloth. In FIG. and FIG. 11, the cloth 31 enters into the liquid 39 and leaves after passing over a guideroll 34 affixed under the spacer 35.

In changing the liquid in FIG. 10, a liquid tank 32 and a spacer 35 are affixed, and only a bottom cover 33 is revolved around a joint 37 by an air cylinder 30 or by some similar mechanism, thereby the liquid is removed from the tank.

A connection 38 is shown between the piston of the air cylinder 30 and the bottom cover 33.

The fixed tank 32, the spacer 35, and the bottom cover 33 can be washed, respectively, by sprinkling washing water from the shower pipe 36.

FIG. 1 1 shows an apparatus arranged in such a way that the whole liquid tank 32 is tilted, and removal of the dyeing liquid, washing and replacement of the dyeing liquid can be effected in a similar way as shown in FIG. 10.

What is claimed is:

l. A method of continuously treating cloth, such as a continuous resin treatment and a continuous dyeing operation,

comprising connecting in an alternating manner lengths of cloth to be treated and guide cloths, providing a wiping surface on each of the faces of the guide cloths, passing the lengths of cloths to be treated and the guide cloths over guide rollers in the treatment chamber wherein the cloth treatment is performed as the guide rollers rotate in a given direction, dampening at least one of the guide cloth and the guide rollers in preparation for contacting the guide cloth and the guide rollers, wiping the surface of the guide rollers with the guide cloth and during the wipening step consecutively reversing the direction of rotation of the guide rollers as the guide cloth passes in wiping relationship therewith commencing with the first guide roller to be contacted by the guide cloth and reversing the rotation of each roller in turn as the preceeding roller completes its reversing action so that the guide rollers are washed by the wiping contact with the guide cloth during the continuous treatment of the cloth.

2. A method of cleaning the surface of rotating guide rollers in the continuous treatment of cloth, such as continuous resin treatment and continuous dyeing, comprising the steps of providing lengths of guide cloth each with a pair of opposite wiping surfaces, securing the lengths of guide cloth in an alternate serial arrangement with lengths of the cloth to be treated, passing the cloth to be treated and the guide cloths continuously over the surfaces of the guide rolls, and dampening at least one of the guide cloths and the guide rollers and wiping the guide rollers with the guide cloths for cleaning the surfaces of the guide rollers.

3. A method, as set forth in claim 2, characterized by the step of reversing the direction of rotation of the guide rollers as the guide cloth passes over the guide rollers for carrying out the cleanin of the guide rollers.

4. A met od, as set forth in claim 2, characterized therein by reversing the direction of rotation of the guide rollers in a successive manner starting with the first guide roller to be contacted by the guide cloth and when a preceeding guide roller has completed its reversing action commencing the reversing action of the next succeeding guide roller of the guide rollers to be cleaned.

Claims

2. A method of cleaning the surface of rotating guide rollers in the continuous treatment of cloth, such as continuous resin treatment and continuous dyeing, comprising the steps of providing lengths of guide cloth each with a pair of opposite wiping surfaces, securing the lengths of guide cloth in an alternate serial arrangement with lengths of the cloth to be treated, passing the cloth to be treated and the guide cloths continuously over the surfaces of the guide rolls, and dampening at least one of the guide cloths and the guide rollers and wiping the guide rollers with the guide cloths for cleaning the surfaces of the guide rollers.
3. A method, as set forth in claim 2, characterized by the step of reversing the direction of rotation of the guide rollers as the guide cloth passes over the guide rollers for carrying out the cleaning of the guide rollers.
4. A method, as set forth in claim 2, characterized therein by reversing the direction of rotation of the guide rollers in a successive manner starting with the first guide roller to be contacted by the guide cloth and when a preceeding guide roller has completed its reversing action commencing the reversing action of the next succeeding guide roller of the guide rollers to be cleaned.