JP4004304B2 - Chest roll ironer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a roll ironer used as a spreader after washing a large fabric such as a sheet, and a chest that stretches a fabric by moving the fabric in a tangential direction of a heated semi-cylindrical concave surface. It relates to a roll ironer of the form called a formula.
[0002]
[Prior art]
There are two types of roll ironers used as a spreader for fabrics such as sheets, which are called a chest type and a cylinder type. The chest type is a method in which a cloth is inserted between a metal smooth semi-cylindrical concave surface and a roll that is slidably contacted with the concave surface and is stretched (ironed). A member forming a semi-cylindrical concave surface is called a chest, which is a cast or steel welded structure, and has a space through which heating oil and steam are passed. The roll that slides in contact with the chest is a structure in which a tape on which a spring is planted is wound around the circumference, and a skin material such as felt is attached to the tape. Rotates while pressed against a metal surface. The fabric to be stretched is inserted between the chest and the roll, conveyed by the peripheral surface of the roll having high friction, and ironed by sliding contact with the surface of the heated chest.
[0003]
Chests originally developed from castings with a diameter of about 300 mm. The initial chest had a narrow contact angle with the roll and was around 90 degrees. Moreover, since the pressure resistance is low and the steam temperature does not increase because it is made of a casting, a multi-roll having 6 rolls, 8 rolls, 12 rolls or the like was used. Later, it developed into a roll whose diameter was enlarged to around 500 mm, and a type that uses the back side to devise a contact area was also devised.
[0004]
The contact angle between the chest and the roll also increased to around 105, 120, and 135 degrees. These chests were originally made of casting and then changed to a steel welded structure, but when polishing the cylindrical concave surface (steel surface) in contact with the fabric, it had to be cut at right angles to the direction of travel of the fabric. For this reason, in the multi-roll structure, the angle of the iron surface cannot be increased in order to create a transfer portion to the next roll.
[0005]
After that, a method was developed in which the polishing process was shaved in the direction of travel of the fabric, but in that case, the polishing could not be done unless the trowel surface was deepened to nearly 180 degrees. A gap piece for filling the gap must be used. If the gap piece is not heated to heat the surface, wet sheets do not slip and become clogged. Therefore, it is necessary to provide a gap piece at the crossing of the iron surface, and a tape (conveying belt) for guiding the cost increase is required.
[0006]
[Problems to be solved by the invention]
The current chest has become larger and heavy with 800, 1200, 1600 mm due to the larger diameter of the roll, and the chest with a diameter of 1200 mm is also heavy, exceeding 1 ton. As a result, it becomes difficult to distribute steam uniformly in the chest, and the internal structure of the air vent and manufacturing chest contradicts the requirements for improving strength and thermal efficiency, and the design is restricted. I had to sacrifice.
[0007]
A large-diameter chest has a merit that the structure can be simplified because a large iron area can be obtained even with a single roll, but a large polishing machine is required to process the iron surface, which increases the processing cost. In addition, at the entrance portion where the wet fabric is inserted, the temperature of the iron surface is lowered, the drain (aggregated water) in the chest is increased, and an undesirable temperature gradient is generated on the iron surface. Due to the increase in size of the chest and the temperature gradient of the trowel surface, there is a problem that large thermal deformation occurs, making the contact pressure between the trowel surface and the roll non-uniform and obstructing the smooth passage of the fabric. In addition, in order to release water vapor from the fabric that dries between the roll and the chest, a structure in which a large number of air holes are provided on the surface of the roll to actively suck water vapor from the inside of the roll is required. It was a cause of increasing costs.
[0008]
The present invention can solve the various problems of the chest type roll ironer as described above, is easy to manufacture, can easily control the temperature distribution on the iron surface, and An object of the present invention is to obtain a chest-type roll ironer that can easily perform uniform contact and adjustment of the contact pressure.
[0009]
[Means for Solving the Problems]
The roll ironer chest 16 of the present invention has a divided structure in which a plurality of pieces 1 elongated in the width direction of the chest are connected in the tangential direction of the trowel surface (the passage direction of the fabric). Each piece is preferably made of withdrawal in cast aluminum or aluminum, preferably through the longitudinal direction (width direction of the chest) that comprise a plurality of through holes 3.
[0010]
Each piece 1 is integrally provided with connecting rods 4 protruding outward in the radial direction with respect to the trowel surface 2 on both outer sides in the width direction (cloth passing direction). The connecting rods 4 of adjacent pieces are fastened to each other by a connecting tool having elasticity in the fastening direction. Practically, this coupling tool is a bolt 13 with an elastic member such as a spring washer 14 interposed.
[0011]
The vicinity of the iron surface of the adjacent piece 1 is positioned by engaging elements 7 and 8 that prevent relative movement of the iron surface 2 in the radial direction and can slightly swing in the cloth passing direction. This engaging element can be realized by interposing a thin elastic member in a state where it is fixed to both of the adjacent pieces. However, another preferred structure is that the arc groove 7 and the arc projection with the axial direction as the width direction of the chest are used. This is a slidable fitting structure with the strip 8.
[0012]
[Action]
1. Since the chest 16 has a divided structure and the divided pieces 1 are provided with through holes 3 for supplying heating oil and steam, the heating temperature (steam pressure, oil temperature, gas temperature, etc.) can be changed depending on the location. Can do.
2. As an alternative to conventional castings, steel and stainless steel, it is possible to use an aluminum alloy, which is three times lighter in weight, twice in strength and 3.3 times in heat transfer compared to steel. It can be made high, and ideal materials can be used as the chest material.
3. Since the chest is divided into a plurality of pieces having the same shape and size, the length of the ironing can be easily changed depending on the application by adding or reducing the necessary number of pieces.
4). Since the aluminum alloy piece is produced by rolling, casting, forging, or the like, there is no welded portion and the strength can be increased.
5). Since the connecting portion between the pieces is flexible in the radial direction of the iron surface and is held by the elasticity of the connecting member, one of the iron surfaces formed by connecting a plurality of pieces is used. By fixing and pressing the other toward the roll under pressure, the contact with the roll can be made more reliable. It is also easy to partially increase or decrease the pressure on the roll by pushing a specific piece in the radial direction of the roll.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are detailed views of pieces that are components of a chest, and FIG. 3 is a view showing a connection structure between adjacent pieces.
[0014]
The piece 1 is made of an aluminum alloy casting or a drawn material, and the cross section is a partial arc shape with a large thickness, and has a length corresponding to the width of the chest in the longitudinal direction (in the direction of arrow W in FIG. 1). The trowel surface 2 of the piece is ground to a circular arc surface having a radius of curvature corresponding to the diameter of the chest or a slightly larger radius of curvature. The piece 1 includes a plurality of through-holes 3 penetrating in the longitudinal direction and a connecting rod 4 in the longitudinal direction projecting integrally on the outer diameter side at both ends in the width direction of the piece (cloth feeding direction). The connecting rod 4 is provided with connecting bolt holes 5 at a predetermined pitch in the longitudinal direction. The width direction end surface 6 of the piece including the outer surface of the connecting rod 4 is a surface in the radius direction of curvature of the iron surface or a surface slightly retreated from the surface. The receding surface referred to here is a surface that is inclined in a direction in which a gap is slightly opened on the outer diameter side of the connecting surface when adjacent pieces are connected to each other.
[0015]
A semi-cylindrical groove 7 is formed on one of the end surfaces, and a semi-cylindrical protrusion 8 is formed on the other end portion of the inner end of the piece in the width direction end surface 6, that is, a portion adjacent to the iron surface 2. ing. The semi-cylindrical grooves 7 and the semi-cylindrical ridges 8 are machined into dimensions that fit each other accurately and are slidable.
[0016]
A small edge cover 11 having a recess 10 that connects the plurality of through holes 3 of each piece is fixed to the small edge end 9 of the piece with a screw (not shown). A plurality of screw holes 12 are provided at the small end of the piece 1 for fixing the screws. Although not shown in the drawing, the fore cover 11 is attached so that oil or steam does not leak from the joint surface between the piece 1 by providing packing on the fastening surface with the piece 1. Further, the small opening cover 11 is provided with a connection port for supplying and discharging oil and steam to be passed through the through hole 3. After assembling the chest, these connection ports are connected to a connection port of adjacent pieces or a heat medium supply source such as oil by appropriate piping.
[0017]
As shown in FIG. 3, adjacent pieces 1 configured as described above are fitted with a semicylindrical ridge 8 in the semicylindrical groove 7, and a bolt 13 is inserted into the bolt hole 5 of the fastening rod. They are connected by fastening with a nut 15 with a spring washer 14 interposed. The fitting between the semi-cylindrical groove 7 and the semi-cylindrical ridge 8 defines the mutual position of the adjacent pieces in the chest radial direction, and guarantees that the trowel surface 2 of the adjacent pieces has the same circular arc surface with no step. is doing. When adjacent pieces are connected in this manner, the curvature radius of the iron surface as a whole is slightly biased in a direction larger than the design value due to the spring force of the spring washer 14.
[0018]
As shown in FIG. 4, the chest 16 is formed by connecting pieces 1 and supporting them at both ends with a frame 17. By connecting the semi-cylindrical grooves 7 and the semi-cylindrical ridges 8, the connected body of the pieces 1 connected so that the adjacent ones can slightly swing is supported by the frame 17 at both ends. When both ends are suspended in the state of a supported chain and the roll 18 is pressed against the iron surface 2, an arc surface that follows the peripheral surface of the roll is formed. The length of the iron surface in the fabric feed direction that contacts the roll 18 can be set stepwise by the number of pieces 1 connected. It is also possible to connect a large number of pieces so that the trowel surface of the chest has an angle of 180 degrees or more. At this time, as shown in FIG. 4, one support part of the connecting body of the pieces is fixed, and a cylinder 19 is provided on the other support part to adjust the contact pressure between the chest surface of the chest and the peripheral surface of the roll 18. Furthermore, by providing the auxiliary cylinder 20 that pushes the intermediate piece 1 toward the roll, it is possible to change the pressing pressure between the chest 16 and the roll 18 along the cloth feeding direction.
[0019]
In addition, each piece has a heat medium passage space independent of each piece formed by the through hole 3 and the recess 10 of the fore cover, so that heating oil and steam can be supplied for each piece, The ironing temperature can be changed in the fabric feed direction. For example, at the fabric entrance, large heat energy is required to raise and evaporate the moisture temperature of the wet fabric. Therefore, the roll ironer of the present invention can easily realize the temperature of the oil or steam supplied to the piece at the entrance portion of the fabric higher than others or increase the flow rate.
[0020]
FIG. 5 is a perspective view showing an example of a preferable roll structure employed in the roll ironer of the present invention. In the illustrated roll 18, a channel 21 having a U-shaped cross section is formed between a plurality of frames fixed to a rotating shaft 24 at predetermined intervals and the outward surface 23 is a partially convex arc surface having a curvature corresponding to the radius of the roll. This is a structure in which a gap 22 is provided between them and fixed side by side. Around the outer periphery of the channel 21, a tape similar to the conventional one in which a spring is planted is wound, and an outer skin material such as felt is covered thereon to form a roll. The gap 22 between the channels 21 serves to quickly release the vapor from the fabric to be ironed into the roll, and by adopting such a roll structure, the weight of the roll and the manufacturing cost can be reduced. Can be reduced, and a roll having a large diameter can be easily manufactured.
[0021]
【The invention's effect】
As described above, according to the present invention, a chest type roll ironer having a large diameter and thus a simple structure can be easily realized, and the temperature distribution on the iron surface from the entrance to the exit of the fabric and the roll and chest. It is possible to provide a chest type roll ironer that can easily set the distribution of the pressing force.
[Brief description of the drawings]
FIG. 1 is a partial perspective view of a piece that is a component of a chest. FIG. 2 is a partial longitudinal sectional view of a piece that is a component of a chest. FIG. 3 is a cross-sectional view showing a connecting structure of pieces. Schematic cross-sectional view of a roll ironer [FIG. 5] Perspective view showing an example of a roll structure [Explanation of symbols]
1 piece 2 trowel surface 3 through hole 4 connecting rod 7 concave groove 8 ridge
10 recess
11 Small cover
12 Screw hole
13 volts
14 Spring washer
16 Chest

Claims (4)

A heat medium supply comprising a chest having a split structure in which a plurality of pieces elongated in the width direction of the fabric passage are connected in the passage direction of the fabric, and the piece has a shallow arc groove shape in contact with the fabric and penetrates in the longitudinal direction. Each of the above pieces is provided with a connecting rod projecting radially outward with respect to the iron surface on the outer peripheral sides of both ends in the cloth passing direction, and the connecting rods of adjacent pieces are elastic in the fastening direction. A chest-type roll ironer that is fastened to each other with a connector having Adjacent pieces are positioned in the vicinity of the iron surface of the connecting end, and are positioned by an engagement element that prevents relative movement in the radial direction of the adjacent iron surface and is slightly swingable in the cloth passing direction. , according to claim 1 Symbol placement chest type roll ironer. The chest-type roll ironer according to claim 2 , wherein the engagement element is a fitting pair of an arc groove and an arc protrusion whose axial direction is the width direction of the chest and slidable in the arc direction. The chest type roll ironer according to any one of claims 1 to 3 , wherein each piece is made of an aluminum alloy casting or an aluminum alloy drawing material.

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