JP2004180829A - Roller ironer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To dry easily-drying laundry and hardly-drying laundry at the same steam temperature and transfer speed without generating wrinkles or folding lines and to prevent the marks of a guide belt from being left on the laundry as far as possible in a calendar type roller ironer for performing the finish drying and wrinkle stretching of washed linen products. <P>SOLUTION: The roller ironer is provided with a temperature change means for changing the temperature of a plurality of heating rollers 1c, 1d and 1e in the post stage of rotary heating rollers provided in multiple stages. The roller ironer is further provided with a temperature adjusting means for adjusting the temperature of the heating roller 1a of the initial stage, and the temperature of the heating roller 1a of the initial stage is set lower than that of the heating roller of the post stage 1b so as to average the degree of dryness in the respective stages. The temperature of the heating roller of the post stage is lowered for the easily-drying laundry and the temperature of the heating rollers in a plurality of stages of the post stage is raised in processing the hardly-drying laundry such as two ply sheets. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
According to the present invention, laundry (washed linen products) such as yukata and sheets are sandwiched between two front and back layers of guide belts and sequentially wound around three or more (usually four or five) rotating heating rollers. The present invention relates to a roller ironer for finishing and drying wrinkles of the laundry by transferring the same, and relates to a roller ironer for business use mainly provided in a linen product washing line used in hotels and hospitals.
[0002]
[Prior art]
There are two types of ironers that remove wrinkles from washed linen products, such as yukata and sheets, on business-use laundry lines, which are roughly classified as a chest type and a calendar type in Japan. There is. In the case of the chest type, the laundry is fed between a chest provided with a concave groove having a semicircular cross-section and a rotary press roller inserted into the concave groove, and the laundry is moved into the chest by rotating the press roller. The wrinkles are stretched (ironed) by pressing and transporting to the peripheral surface, and the surface of the wrinkled laundry is glossy. However, the apparatus is large, consumes a large amount of energy, and has low productivity.
[0003]
On the other hand, a calendar-type roller ironer is a method of washing washed linen products by sequentially winding and transporting laundry with four or five synchronously rotating steam heating rollers while sandwiching the laundry between two front and back guide belts. It performs wrinkle smoothing and finish drying, and does not polish the surface of the laundry.However, because the equipment is relatively inexpensive and has low energy consumption, it is widely used in the washing line of commercial linen products in Japan. ing.
[0004]
FIG. 3 is a view showing an example of a roller arrangement of a calendar-type roller ironer having four heating rollers and a path of laundry, wherein 1 (1a to 1d) are rotary heating rollers, and 21 is a press roller. , 22 are guide rollers that define a laundry path 23. The path 23 is provided with a number of rollers (without reference numerals) for guiding a guide belt 24 that holds the laundry on both sides. The heating roller 1 is heated by blowing steam into the inside, and while the laundry is sequentially wound around and transported by these rollers while being sandwiched between the front and back two-layer guide belts, the laundry is wrinkled. And drying is performed.
[0005]
In a commercial laundry line, a dryer is installed upstream of such an ironer, and the laundry dried by the dryer to a moisture content necessary for wrinkle growth is supplied to the ironer. And hospitals), the degree of dryness of the laundry after passing through the ironer is different because the sheets and the yukata have different fabric thicknesses. For example, for a two-ply sheet, the finish drying cannot be sufficiently performed by a four-roller ironer, and the finish drying is performed by a roller ironer provided with five rotary heating rollers.
[0006]
If the ironer is designed for laundry that takes a long time to dry, when a piece of laundry that dries quickly passes through, for example, one sheet of ironer is designed to allow ironing of two sheets of sheets. When inserted, the laundry can become too dry and crisp. Therefore, when ironing laundry that is easy to dry, the transfer speed of the laundry in the apparatus is increased to prevent the laundry from being excessively dried.
[0007]
[Problems to be solved by the invention]
However, when the transfer speed of the laundry in the apparatus is increased, the wrinkled or creased portions of the ironed laundry are easily generated. In order to cleanly wrinkle the laundry, the laundry must be sandwiched between two layers of guide belts in a state where the laundry is spread without wrinkles. The latest adjustment is necessary for belt tension and pressing force against rollers. Increasing the transfer speed of the laundry in the apparatus improves the productivity. However, it is difficult to adjust to prevent wrinkles and folds from occurring, and defective products are generated and the productivity is rather lowered.
[0008]
In addition, the ironer must finish the laundry at a speed suitable for the processing capacity of the dryers and folding machines disposed before and after the washing line, and changes the transfer speed in the apparatus according to the type of the laundry. If the control is adopted, the processing capacity of the preceding and following equipment will be unbalanced, and the laundry will stay, and even if the processing speed of the ironer is improved, the processing capacity of the entire line will not be improved. The flow of the laundry gets worse.
[0009]
Further, in an ironer that transports laundry by a guide belt, there is a problem that a mark of the guide belt is attached to the finished laundry. The traces of the guide belt are disliked by customers like the above-described partial wrinkles and folds, and there is a demand for a device or a process that does not cause the traces of the belt. Attempts have been made to increase the width of the guide belt and reduce the thickness of the belt in order to make the belt marks inconspicuous, but it is difficult to eliminate the belt marks at all. It is unavoidable that the mark is attached, and at present it is made as inconspicuous as possible.
[0010]
The present invention has been made in view of the above-described problems, and does not cause partial wrinkles or folds under the same conditions, that is, at the same steam temperature and the same transfer speed, for laundry that is easy to dry and laundry that is difficult to dry. It is an object of the present invention to provide a calendar type roller ironer that is dried to an appropriate state and that leaves traces of a guide belt on laundry as much as possible.
[0011]
[Means for Solving the Problems]
The invention of this application solves the above-mentioned problem by providing a temperature changing unit or a temperature adjusting unit for some of the rotary heating rollers provided in multiple stages. That is, the roller ironer according to the invention of claim 1 of the present application is a method in which the front and back sides of the laundry are sandwiched between the rotating steam heating rollers 1 arranged in multiple stages and sequentially wound around by two layers of guide belts. In a roller ironer for performing wrinkle stretching and finish drying, a temperature changing means for changing the temperature of a plurality of heating rollers 1c, 1d, and 1e at the subsequent stage is provided.
[0012]
Further, the roller ironer according to the invention of claim 2 of the present application is such that the front and back sides of the laundry are sandwiched between the rotating steam heating rollers 1 arranged in multiple stages by a two-layer guide belt and sequentially wound around the laundry, thereby rotating the laundry. In a roller ironer for performing wrinkle stretching and finish drying, a temperature adjusting means for adjusting the temperature of the first stage heating roller 1a is provided.
[0013]
Furthermore, the roller ironer according to the invention of claim 3 of the present application provides a rotating steam heating roller 1 that is arranged in multiple stages, by sandwiching the front and back of the laundry with a two-layer guide belt and sequentially wrapping the laundry, thereby successively winding the laundry. In a roller ironer for performing wrinkle elongation and finish drying, the roller ironer includes temperature adjusting means for adjusting the temperature of a first-stage heating roller 1a and temperature changing means for changing the temperature of a plurality of subsequent heating rollers 1c, 1d, and 1e. I have.
[0014]
In the method of finishing laundry according to the invention of claim 5 of the present application, the laundry is successively wound around rotating steam heating rollers 1 arranged in multiple stages while being sandwiched between front and back two-layer guide belts. In the method of finishing laundry which performs wrinkle smoothing and finish drying, the temperature of the first-stage heating roller 1a is set lower than that of the second-stage heating roller 1b so that the degree of drying in each stage of the heating roller is averaged. Is what you do.
[0015]
A plurality of heating rollers 1c, 1d, and 1e at the subsequent stage among the rotating heating rollers provided in multiple stages are provided with temperature changing means. Prevents things from drying out too much. On the other hand, when processing hard-to-dry laundry such as two-ply sheets, the temperature of the heating rollers in the subsequent stages is increased. A heating temperature at which an appropriate finish drying is performed is set in advance for each laundry of different types of fabrics and types, and the temperatures of the plurality of heating rollers 1c, 1d, and 1e at the subsequent stage are set in accordance with the type of the laundry to be inserted. Make a choice. The set temperature is a temperature at which all the laundry has an appropriate degree of dryness when the laundry is passed at a predetermined speed corresponding to the processing speed of the dryer and the folding machine before and after the apparatus.
[0016]
Further, the temperature of the first-stage heating roller 1a is adjusted to lower the temperature of the roller, so that the trace of the guide belt remains on the laundry. In a conventional roller ironer of this type, when a heating roller having 4 to 5 stages is used, drying of 30% or more is performed by the first roller. According to a test conducted by the inventors of the present application, in the conventional ironer, belt marks were generated by the wet laundry being rapidly dried by the first-stage heating roller. By adjusting the temperature of the first-stage roller to be low and thereby lowering the degree of drying of the first-stage heating roller, the trace of the guide belt remaining on the laundry could be reduced.
[0017]
It is preferable to adjust the temperature of the first stage heating roller 1a by continuously changing the set value by adjusting the temperature adjustment dial 7 or the like while observing the state of the trace of the guide belt remaining on the laundry. On the other hand, for the temperature of the subsequent heating rollers 1c, 1d, and 1e, a selection button 8 corresponding to the material and type of the laundry is prepared, and one of a plurality of selection buttons is selected according to the laundry to be processed. Thus, it is preferable that the temperatures of the heating rollers 1c, 1d, and 1e are set to appropriate temperatures.
[0018]
Therefore, a preferable temperature changing means in the roller ironer according to the invention of this application is a temperature sensor 6 for detecting the temperature of the drain discharged from the heating rollers 1c, 1d, and 2e, and the amount of steam supplied to the heating rollers. A steam valve 3, storage means for a plurality of set temperatures, a selection means 8 for selecting one of these storage means, and a set value in which the detected value of the temperature sensor is stored in the selected storage means. And a controller 5 for controlling the opening of the steam valve 3.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows an embodiment of a roller ironer provided with five rotary heating rollers 1a to 1e. In the figure, a laundry transfer line in the apparatus is omitted, and the arrangement of heating rollers is omitted. And only the main parts of the temperature adjusting means and the temperature changing means are shown. Arrows A and B in the figure indicate the directions of supply and discharge of the laundry into the apparatus. Reference numeral 2 denotes a pressurized steam pipe for heating the heating rollers 1a to 1e, which is provided with a temperature control valve 3a in a supply line to the first-stage roller 1a, and supplies steam to the subsequent three-stage rollers 1c, 1d, and 1e. The supply line is provided with a temperature change valve 3b. The temperature adjusting valve 3a and the temperature changing valve 3b have the same structure and function, and the opening degree of the valve is adjusted by a signal from the controller 5.
[0020]
As schematically shown in FIG. 2, a drain pipe 10 that does not rotate through its axis is inserted through one end of each heating roller 1. This drain pipe is bent downward in the roller, and its tip is open near the lower end of the inner periphery of the roller. Steam is supplied from the steam pipe 2 to the inside of the roller 1 via the rotary joint 11 and the hollow roller support shaft 12. The supplied steam is deprived of heat by the heat radiation of the roller 1 and condenses, and the drain 14 accumulates below the roller 1. The drain is guided to the drain pipe 10 by the pressure of the steam supplied from the steam pipe 2, and is discharged through the steam trap 15. The discharged drain is usually returned to the steam boiler, but may be used as a heat source for other equipment.
[0021]
As shown in FIG. 1, in the illustrated embodiment, the temperature of the drain discharged from the first-stage heating roller 1a is detected by a first temperature sensor 6a, and the detected value is used as a temperature adjustment dial 7 provided in a controller. The degree of opening of the temperature control valve 3a is adjusted so as to reach the temperature set in (1). Further, for the three heating rollers 1c, 1d, and 1e in the latter stage, the temperature of the drain discharged from the fourth heating roller 1d is detected by the second temperature sensor 6b, and the detected value is the type of the laundry. The opening degree of the temperature changing valve 3b is changed so that the temperature is set to correspond to the button selected from among the plurality of selection buttons 8 provided corresponding to.
[0022]
During operation of the apparatus, a corresponding selection button is pressed according to the type of laundry to be supplied, and the transfer speed of the laundry in the apparatus is made constant regardless of the type of laundry to finish the laundry. At this time, the temperature of the first-stage heating roller 1a is adjusted by adjusting the temperature adjustment dial 7 so that the trace of the guide belt remaining on the laundry discharged from the apparatus is minimized. The temperature is adjusted so as to be lower than the temperature to obtain a good finish.
[0023]
【The invention's effect】
According to the present invention, by changing the temperature of a plurality (two or three) of the subsequent stages of the heating rollers provided in multiple stages in accordance with the type of the laundry, the laundry does not wrinkle or twist, and the upstream side and the downstream side do not have any wrinkles. It is possible to obtain a roller ironer capable of finishing all types of laundry to an appropriate degree of drying at a constant moving speed compatible with the processing speed of a dryer or a folding machine provided on the side. In addition, by adjusting the temperature of the first-stage heating roller to be lower than that of the second-stage heating roller and averaging the degree of drying between the heating rollers provided in multiple stages, it is possible to reduce the trace of the guide belt remaining on the laundry. it can. Therefore, according to the present invention, the laundry can be finished without causing the laundry to stay on the laundry line, without causing excessive or insufficient drying, and without leaving traces, wrinkles or folds of the guide belt. There is an effect that the finishing line can be realized.
[Brief description of the drawings]
FIG. 1 is a schematic explanatory diagram showing an embodiment of the present invention. FIG. 2 is an explanatory diagram showing temperature detection and control. FIG. 3 is a diagram showing a roller arrangement of a four-roller ironer and a transfer route of laundry. [Description of reference numerals]
1a to 1d Heating roller 3 Temperature adjustment valve 4 Temperature change valve 5 Controller 6 Temperature sensor 8 Selection button

Claims (5)

In a roller ironer for performing wrinkle elongation and finish drying of the laundry by sandwiching the front and back of the laundry with a two-layer guide belt and sequentially wrapping the laundry on a rotating steam heating roller (1) arranged in multiple stages, A roller ironer comprising temperature changing means for changing the temperature of the heating rollers (1c, 1d, 1e). In the roller ironer, in which the laundry is wrinkled and finished dried by sandwiching the front and back of the laundry with a two-layer guide belt and rotating the laundry sequentially on the rotating steam heating rollers (1) arranged in multiple stages, the first stage heating is performed. A roller ironer comprising a temperature adjusting means for adjusting the temperature of the roller (1a). In the roller ironer, in which the laundry is wrinkled and finished dried by sandwiching the front and back of the laundry with a two-layer guide belt and rotating the laundry sequentially on the rotating steam heating rollers (1) arranged in multiple stages, the first stage heating is performed. A roller ironer comprising: a temperature adjusting unit that adjusts a temperature of a roller (1a); and a temperature changing unit that changes a temperature of a plurality of subsequent heating rollers (1c, 1d, 1e). A temperature sensor (6) for detecting a drain temperature discharged from the heating rollers (1c, 1d, 2e); a steam valve (3) for adjusting the amount of steam supplied to the heating rollers; Storage means for storing the set temperature, a selection means (8) for selecting one of these storage means, and a steam so that the detected value of the temperature sensor becomes the set value stored in the selected storage means. The roller ironer according to claim 1 or 3, further comprising a controller (5) for controlling an opening of the valve (3). The method of finishing a laundry, wherein the laundry is successively wound around rotating steam heating rollers (1) arranged in multiple stages in a state of being sandwiched between two front and back guide belts, thereby performing wrinkle expansion and finish drying of the laundry. A method for finishing laundry, characterized in that the temperature of the first-stage heating roller (1a) is set lower than that of the second-stage (1b) heating roller so that the degree of drying in each stage of the heating roller is averaged.

Images