JP2008055092A - Roll finishing machine and roll finishing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve a roll finishing machine to facilitate drying of an object to be treated and to significantly improve the processing capacity. <P>SOLUTION: A heat-insulated belt 12 is wound around a heating roll 11, which is rotated in a direction indicated by an arrow L. A vacuum box 13 is disposed facing the heating roll 11 with distance in-between. The face of the vacuum box facing the heating roll 11 is composed of a porous plate 13a. When air is discharged from the vacuum box 13 by a blower 15 to reduce the pressure, atmospheric air flows in a direction indicated by an arrow γ in contact with the object 8 to be treated, and the steam partial pressure near the surface of the object 8 to be treated is reduced. As the steam partial pressure is reduced, evaporation is facilitated and the object 8 to be treated can be quickly dried. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a technique of inserting a workpiece between a rotating heating roll and a belt wound around the heating roll, for example, a calendar type roll finishing machine, and performing the roll finishing, and its efficiency. It is about improvement. However, it can also be applied to roll finishing machines other than the calendar type.

FIG. 4 is a schematic front view showing a conventional example of a calendar type roll finishing machine, with an arrow indicating an operation direction.
This example has three main rolls. That is, it has the 1st main roll 1, the 2nd main roll 2, and the 3rd main roll 3, and each main roll has the 1st heat resistant belt 4, the 2nd heat resistant belt 5, and the 3rd heat resistant belt. 6 is wound (however, the number of main rolls installed is not limited to 3 and is generally 2 to 5).

The first main roll 1 is heated by supplying steam, and is driven to rotate clockwise (clockwise) as indicated by an additional arrow R.
The first heat-resistant belt 4 wound around this rotates counterclockwise (counterclockwise) as indicated by an arrow L.
The second main roll 2 and the third main roll 3 are rotationally driven counterclockwise as indicated by an additional arrow L, and the second heat resistant belt 5 and the third heat resistant belt 6 wound around these are respectively indicated by an additional arrow R. It is rotating clockwise.

The object to be processed 8A, which has been washed and dehydrated and is not yet finished with the roll, is carried in by the feed conveyor 7 as indicated by an arrow a, and is inserted between the first main roll 1 and the compression roll 9 as indicated by an arrow b. .
The workpiece 8A is pressed by the pressing roll 9 to be wrinkled, and is brought into contact with the high temperature first main roll 1 and dried.
In this example, four compression rolls 9 are provided. The number of the compression rolls installed is generally 4-7.
The workpiece 8A passes through the first main roll 1, the second main roll 2, and the third main roll 3 in sequence, is pressed against the main roll by the heat-resistant belt, and is heated by the main roll that is heated, It is press-finished and carried out like the workpiece 8B (arrow c).
Reference numeral 10 denotes a guide tape that prevents the workpiece 8A from being wound.

Regarding a roll finishing machine, Japanese Patent Laid-Open No. 2006-138822 “Roll Finishing Machine for Washed Objects and Roll Finishing Method” described as Patent Document 1 proposes a technique that does not cause wrinkles. .
In addition, Japanese Patent Application Laid-Open No. 2005-205065 described in Patent Document 2 “A Winding Prevention Method and an Air-type Winding Prevention Device in a Roll Finishing Machine” proposes a technique for preventing a workpiece from being wound around a roll. Has been.
However, a new proposal for improving the processing efficiency (processing amount / time) of the roll finishing machine and a new proposal for reducing the shape size / weight / production cost of the roll finishing machine have not yet been made.
JP 2006-138022 A JP 2005-205065 A

A washing machine, dehydrator, and roll finisher are installed in a series at the laundry factory, and continuous operations are performed.
Since the performance of washing machines and dehydrators has improved and the processing capacity (processing amount per unit time) has increased, there is a demand for an increase in processing capacity of finishing machines.
In addition to simply increasing the processing capacity, it is required not to increase the installation area of the machine, but also to suppress the increase in the weight and manufacturing cost of the machine as much as possible.

As understood from the conventional roll finishing machine shown in FIG. 4, when the processing amount is increased, (a) the heating temperature of the main roll is increased. And (b) increasing the rotational speed of the main roll. Can be considered.
However, there is a limit to the increase in the heating temperature of the main roll. That is, since the main roll is generally heated with steam, it cannot be made higher than the steam temperature. Even if means such as electric heating are used in combination, the temperature cannot exceed the heat resistance of the object to be processed which is a textile product.
Further, when the rotation speed of the main roll is increased, the passage time of the object to be processed is shortened and drying becomes insufficient.
Therefore, if it is attempted to increase the processing amount within the range of the prior art, the shape of the main roll must be expanded or the number of main rolls installed must be increased.
Increasing the shape and size of the main roll or increasing the number of main rolls inevitably increases the shape and weight of the entire roll finisher and the required installation area, which increases the manufacturing cost. .

The present invention has been made in view of the circumstances described above, and the object is as follows.
An object is to provide a roll finishing machine and a roll finishing method capable of slightly suppressing an increase in weight and an increase in manufacturing cost without increasing the required installation area of a mechanical device, and capable of significantly increasing the processing amount.

The basic principle of the present invention created in order to achieve the above object is to improve the ventilation state in the vicinity of the object to be processed, to quickly remove the vapor generated from the object to be processed, and to improve the air in the vicinity of the object to be processed. Evaporation is promoted by reducing the vapor partial pressure inside.
The following is a brief description with reference to FIG. 1 corresponding to one embodiment of the present invention. In this paragraph, reference numerals for the drawings are appended in parentheses for easy understanding, but this appendix does not limit the configuration of the present invention.
(Refer FIG. 1 (A)) The heat-resistant belt 12 is wound around the majority of the outer peripheral surface of the heating roll 11 (from the point α to the point β counterclockwise).
A vacuum box 13 is installed opposite to and spaced from the area where the heat-resistant belt is wound. A perforated plate is indicated by reference numeral 13a.
Air (containing steam) in the vacuum box 13 is discharged by the blower 15.
(See FIG. 1 (B)) Vapor generated from the workpiece 8 sandwiched between the heating roll 11 and the heat-resistant belt 12 is vacuum sucked through the perforated plate 13a and quickly removed. For this reason, evaporation from the workpiece 8 is promoted.

As a specific configuration based on the above-described principle, the roll finishing machine according to the invention of claim 1 is a roll finishing machine including a heating roll (main roll) and a belt wound around the heating roll.
A vacuum box facing and separating from the area where the heating roll is wound around the belt;
A means for discharging air (including steam) in the vacuum box is provided.

The configuration of the roll finishing machine according to the invention of claim 2 is in addition to the configuration requirements of the inventive device of claim 1,
At least one portion of the surface of the vacuum box facing the heating roll is constituted by a perforated plate, and the perforated plate forms a concave cylindrical surface concentric with the outer peripheral surface of the heating roll.

The configuration of the roll finishing machine according to the invention of claim 3 is in addition to the configuration requirements of the invention of claim 1 or claim 2,
A heat-resistant flexible sealing member is attached to at least a part of an edge of the vacuum box facing the heating roll (desirably, an edge perpendicular to the axis of the heating roll).

The configuration of the roll finishing machine according to the invention of claim 4 is in addition to the configuration requirements of the inventions of claims 1 to 3,
The vacuum box is provided with means for increasing / decreasing the size of the gap with the heating roll.

The configuration of the roll finishing machine according to the invention of claim 5 is in addition to the requirements of the invention of claim 1,
One vacuum box is provided for one heating roll,
Alternatively, a plurality of vacuum boxes are provided for one heating roll, and the suction side surfaces of the plurality of vacuum boxes are adjacent to each other and the length of one part of the outer peripheral surface of the heating roll It is characterized by covering most of the direction.

The roll finishing method according to the invention of claim 6 is:
In a roll finishing method in which a workpiece is inserted between a rotating heating roll and a belt wound around the heating roll,
A vacuum suction means is provided over at least a portion of the area where the heating roll is wrapped around the belt;
Vapor generated from the object to be processed is quickly removed by the vacuum suction means, and drying of the object to be processed is promoted.

In addition to the constituent features of the invention method of claim 6, the roll finishing method according to the invention of claim 7,
If the vacuum suction means is provided with an air suction opening at a position facing the heating roll, and a means for controlling the air flow rate (for example, a perforated plate) is provided in the vicinity of the opening so that the air flow distribution is uniform. It is characterized by tightening.

The roll finishing method according to the invention of claim 8 is in addition to the constituent features of the invention method of claim 6 or claim 7,
Depending on the thickness dimension of the workpiece being sandwiched between the heating roll and the belt,
A gap dimension between the vacuum suction means and the outer peripheral surface of the heating roll is adjusted.

When the invention apparatus of claim 1 is applied, a vacuum box is provided opposite to the heating roll, and means for exhausting air (including steam) in the vacuum box is provided. Vapor generated from the object in contact with the surface is quickly vacuumed and removed.
For this reason, the vapor | steam partial pressure in the air which is in contact with the surface of a to-be-processed object falls, and evaporation is accelerated | stimulated.
By promoting the evaporation, even if the shape and temperature of the heating roll are the same, the efficiency of roll finishing is greatly improved.
Since the essential components of the device of the present invention are a vacuum box and air evacuation means (for example, a blower and an exhaust pipe), the required area for installing the roll finishing machine is not increased, and the weight of the roll finishing machine and the increase in production cost are negligible. It is.
Since the increase in processing efficiency due to the application of the apparatus of the present invention is very large, the processing capacity / machine weight, the processing capacity / production cost, the processing capacity / required installation area, and the processing capacity / energy consumption increase significantly.

  When the invention apparatus of claim 2 is applied together with the invention of claim 1, the perforated plate makes the air flow distribution uniform, so that the object to be processed is dried uniformly and there is a risk of causing uneven processing of the roll finish. No.

When the invention device of claim 3 is applied together with the invention device of claim 1 or claim 2,
The space between the vacuum box and the heating roll is gently sealed by a flexible sealing member.
For this reason, the flow rate of the intake air that is bypassed without contacting the object to be processed is suppressed, and the effective utilization rate of the intake air is improved.
Moreover, since the sealing member is flexible and the sealing interval is gradual, it can flexibly adapt to hard members such as buttons attached to the object to be processed, preventing troubles from occurring. Is done.

When the invention device of claim 4 is applied together with the invention device of claims 1 to 3,
Since the space | interval dimension of a vacuum box and a heating roll can be adjusted, according to the kind of to-be-processed object, it can be operated in an appropriate state. This increases the versatility of the roll finisher.

  Also by applying the invention device of claim 5, the same effect as in claim 1 can be obtained.

When the invention method of claim 6 is applied,
The area where the heating roll is wound around the belt, that is, the area where the workpiece is sandwiched and pressed between the heating roll and the belt is covered with the vacuum suction means. Steam generated from the object to be processed can be quickly eliminated.
As a result, the vapor partial pressure in the air in contact with the surface of the object to be processed is reduced, and evaporation is promoted.
For this reason, a large amount of objects to be processed (laundry / dehydrated laundry) can be quickly rolled using a small and lightweight heating roll.

  When the inventive method of claim 7 is applied together with the inventive method of claim 6, the flow rate distribution of the air in contact with the object to be processed becomes uniform, and the progress of drying becomes uniform. For this reason, unevenness in finishing does not occur in the processed product.

When the inventive method of claim 8 is applied together with the inventive method of claim 6 or claim 7,
An appropriate roll finish can be performed according to the type of the object to be treated (laundry / dehydrated laundry).
In other words, even a thin workpiece such as a handkerchief does not bypass an invalid air flow, and even a thick workpiece such as pants can be passed smoothly without being caught. Is expensive.

FIG. 1 shows one embodiment of a roll finishing machine according to the present invention, (A) is a front sectional view schematically showing the main part, and (B) is an ellipse of an imaginary line in FIG. It is an expanded detailed sectional view of the part B shown enclosed.
Reference numeral 11 denotes a heating roll, which is a member corresponding to any one of the first to third main rolls (reference numerals 1 to 3) in FIG. 4 (conventional example).
When it is named in comparison with the compression roll 9, it becomes a main roll, and when it is named based on its function, it becomes a heating roll.
In the present invention, the heating roll and the main roll are substantially the same members.

(See FIG. 1 (A)) The heating roll 11 in this example rotates counterclockwise (counterclockwise) as indicated by an arrow L, and the workpiece (not shown in FIG. 1 (A)) is a point. It is sandwiched between the heating roll 11 and the heat-resistant belt 12 in the vicinity of α and discharged near the point β.
That is, the section from the point α to the point β in the counterclockwise direction is a press working section of the workpiece.
This press working area is the same as the "area where the heat-resistant belt 12 is wound around the heating roll 11".
A vacuum box 13 is disposed opposite to and spaced apart from a part of the above-described press working section (α to β).

The surface of the vacuum box 13 facing the heating roll 11 is constituted by a perforated plate 13a formed on a concave cylindrical surface concentric with the heating roll.
The air in the vacuum box 13 is depressurized through the exhaust pipe 14 by air discharge means (blower 15 in this example).
(See also FIG. 1 (B)) The workpiece 8 sandwiched between the heat-resistant belt 12 and the heating roll 11 rotates in the direction of arrow L together with the heat-resistant belt and the heating roll, Pass through the front.
Since the vacuum box 13 is vacuum-sucked, the nearby air flows as shown by the arrow γ.

The destination of the arrow γ is the suction port of the blower 15. The upstream side of the arrow γ is “in the vicinity of the edge where the vacuum box 13 is approaching the heating roll 11, and the air in this vicinity is sucked in contact with the workpiece 8 and passes through the porous plate 13 a.
The liquid (for example, water) contained in the workpiece 8 heated by the heating roll 11 tries to evaporate, but evaporates when the vapor of the liquid evaporated just before is full (the partial pressure of the vapor is high). Is disturbed.
In this state, when ventilation is performed as indicated by the arrow γ, the vapor partial pressure in the air in contact with the object to be processed is reduced, and evaporation is promoted.

(See FIG. 1 (A)) The object to be processed (not shown in the figure) is in contact with the heating roll 11 at the point α, and the wrinkles are stretched by the compression roll 9 while proceeding from the point α to the point δ. However, it is preheated by the heating roll, reaches a temperature at which it easily evaporates, passes through the point δ, and reaches the porous plate 13 a of the vacuum box 13.
The object to be processed passes in the direction of the arrow L while facing the perforated plate, and the contained liquid (water in this example) is evaporated during this time.

FIG. 2 is an external perspective view of the main members of the roll finishing machine according to the embodiment shown in FIG.
In this example, a felt 16 as a heat-resistant flexible sealing member is attached to the edge of the vacuum box 13 facing the heating roll 11 and is sealed relatively gently. The above-mentioned relatively gentle means that a slight leak is allowed.
In the present invention, heat resistance refers to the ability to withstand contact with a heating roll heated by steam.
Sealing as described above suppresses invalid bypass flow of air. In addition, the tolerance for changes in the thickness dimension of the workpiece (not shown in FIG. 2) increases. In carrying out the present invention, the sealing member is not limited to felt, and a flexible heat-resistant material can be appropriately selected and used.

Although illustration is omitted, if a means for adjusting the distance between the vacuum box 13 and the heating roll 11 is provided, it can adapt to changes in the type of the object to be processed, and is thin like a handkerchief. Even if the object to be processed is a thick object to be processed like trousers, it can be roll-finished and has great versatility.
When carrying out the present invention, the vacuum box 13 does not need to be a box-like member literally. For example, even if a plurality of members similar to the suction port (nozzle) of a household vacuum cleaner are arranged, the same effect can be obtained. The arrangement area is the same as the area where the vacuum box 13 faces the heating roll 11 in the example of FIG.
That is, it is only necessary to cover a part of the outer peripheral surface of the heating roll 11 over almost the entire length thereof.
When a plurality of suction ports (nozzles) are arranged as described above, the porous plate 13a shown in the embodiment of FIG. 1 can be omitted.

(Refer FIG.1 (B)) The perforated plate 13a is shape | molded by the concave cylinder surface concentric with the outer peripheral surface of the heating roll 11. FIG. The curvature radius r is set by adding the thickness dimension t of the workpiece 8 to the radial dimension of the heating roll 11.
However, since the workpiece thickness dimension t is not constant, it is recommended to set as follows.
(A) The maximum value is taken within the range of the expected workpiece thickness dimension. Or
(B) It is configured so that the position of the perforated plate 13a can be adjusted (the adjusting mechanism capable of increasing or decreasing the distance dimension T between the vacuum box 13 and the heating roll 11 is provided).

FIG. 3 is a chart showing experimental results comparing the evaporation state in the roll finishing machine according to the above embodiment with the evaporation state in the conventional roll finishing machine.
The vertical axis represents the moisture content in the laundry. The value indicated by the symbol C is the water content in the state of being dehydrated by the centrifugal dehydrator, that is, the state in which roll finishing is started.
The reference numeral N indicates a state in which natural drying has been completed, that is, a state in which it is determined that roll finishing has been completed.
The horizontal axis is time (unit: second).

Curve d represents the progress of drying of the workpiece in the roll finishing machine of the conventional example (see FIG. 4), and curve e represents the progress of drying in the roll finishing machine of the embodiment (see FIG. 1). .
In the present embodiment, when the laundry that has been washed and dehydrated is put into a roll finisher, it takes about 3 seconds to dry to the same state as natural drying in the conventional example. It is read from this chart that it is dry in about 1 second.
This is an example, but it has been proved that the time required for drying is significantly shortened to 1/3, for example, by applying the present invention.

The following forms can be considered as application examples of the present invention.
For example, the conventional example shown in FIG. 4 includes three main rolls 1. If the vacuum box, the exhaust pipe, and the blower according to the present invention are attached to the main roll, the number of main rolls installed is one. An individual will suffice.
As can be seen from the above consideration, the fact that the processing efficiency of the roll finishing machine can be significantly increased (for example, three times) by applying the present invention, the shape, size, weight, and production cost of the roll finishing machine are reduced. It means that it can be remarkably reduced.
Considering the fact that the laundry factory is composed of a washing machine, a dehydrator and a finishing machine and is continuously operated as mentioned above, and that the processing capacity of the washing machine and dehydrator is increasing. The increase in the processing capacity of the roll finishing machine according to the present invention is of great practical value.

1 shows an embodiment of a roll finishing machine according to the present invention, (A) is a front cross-sectional view schematically showing the main part, (B) is a part B enclosed by an imaginary line ellipse in the above (A) figure. Detailed cross-sectional view of The perspective view which extracted the main structural member of the roll finishing machine which concerns on the said embodiment, and was drawn typically The chart which shows the experimental result which compared the reduction | decrease state of the moisture content of the to-be-processed object in the roll finishing machine which concerns on the said embodiment with the reduction | decrease state of the moisture content of the to-be-processed object in the roll finishing machine which concerns on a prior art example. The front view which showed the finishing machine of the 3 roll type which concerns on a prior art example, and added the arrow for demonstrating an operation state

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... 1st main roll 2 ... 2nd main roll 3 ... 3rd main roll 4 ... 1st heat resistant belt 5 ... 2nd heat resistant belt 6 ... 3rd heat resistant belt 7 ... Feeding conveyor 8 ... To-be-processed object 9 ... Pressing roll 10 DESCRIPTION OF SYMBOLS ... Guide tape 11 ... Heating roll 12 ... Heat-resistant belt 13 ... Vacuum box 13a ... Perforated plate 14 ... Exhaust pipe 15 ... Blower 16 ... Felt a ... Arrow which shows loading of to-be-processed object b ... Arrow which shows insertion of to-be-processed object c ... Arrow indicating unloading of workpiece C ... Centrifuge dehydration level d ... Curve showing change in moisture content in conventional example e ... Curve showing change in moisture content in embodiment L ... Counterclockwise (counterclockwise) Arrow indicating the rotation direction N: Natural drying level r: Radius of curvature of the porous plate R: Arrow indicating the clockwise (clockwise) rotation direction t: Thickness dimension of the workpiece T: Between the porous plate and the heating roll Remote dimension α ... Press start point β ... Press end point γ ... Arrow direction arrow

Claims (8)

In a roll finishing machine comprising a heating roll and a belt wound around the heating roll, a vacuum box facing and separating from an area where the heating roll is wound around the belt;
A roll finishing machine comprising: means for discharging air in the vacuum box.   At least one portion of the surface of the vacuum box facing the heating roll is constituted by a perforated plate, and the perforated plate forms a concave cylindrical surface concentric with the outer peripheral surface of the heating roll, The roll finishing machine according to claim 1.   The roll finisher according to claim 1 or 2, wherein a heat-resistant flexible sealing member is attached to at least a part of an edge of the vacuum box facing the heating roll.   The roll finisher according to any one of claims 1 to 3, wherein the vacuum box is provided with means for increasing or decreasing a gap between the vacuum roll and the heating roll. One vacuum box is provided for one heating roll,
Alternatively, a plurality of vacuum boxes are provided for one heating roll, and the suction side surfaces of the plurality of vacuum boxes are adjacent to each other and cover most of the outer circumferential surface of the heating roll in the length direction. The roll finishing machine according to claim 1, wherein In a roll finishing method in which a workpiece is inserted between a rotating heating roll and a belt wound around the heating roll,
A vacuum suction means is provided over at least a portion of the area where the heating roll is wrapped around the belt;
A roll finishing method characterized in that the vacuum suction means removes steam generated from the object to be processed and promotes drying of the object to be processed.   An air suction opening is provided at a location where the vacuum suction means faces the heating roll, and a means for controlling the air flow rate is provided at the opening to make the flow distribution of the intake air uniform. The roll finishing method according to claim 6. Depending on the thickness dimension of the workpiece being sandwiched between the heating roll and the belt,
The roll finishing method according to claim 6 or 7, wherein a gap dimension between the vacuum suction means and the heating roll is adjusted.

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