Patent Application
20130140388
The present invention relates to a storage package for a string-like material and a method for storing the string-like material.
The present application claims priority based on Japanese Patent Application No. 2010-130365, filed Jun. 7, 2010, the content of which is incorporated herein by reference.
As a method for storing a string-like material in a tubular container, in PTL 1, a method is disclosed in which the string-like material is supplied at a constant speed while a cylindrical container is rotated, the rotational speed of the cylindrical container is changed according to a predetermined rotational speed pattern, and thus, the string-like material is disposed in a spiral shape. According to this method, storage efficiency and storage stability of the string-like material can be improved using a simple storage mechanism.
In PTLs 2 and 3, a wire winder in which wires are stored in the entire cylindrical container is disclosed.
Specifically, the winder disclosed in PTL 2 is a mechanism in which a driver for winding the wire around the container is disposed in a hollow unit of a fixed hollow cylindrical container and the driver rotates a capstan, which discharges the wire above the container storage unit, around a central axis of the container while rotating the capstan. In addition, the winder includes a swing mechanism which changes an inclination of a rotating shaft of the capstan at a period different from the period of the revolution.
The winder disclosed in PTL 3 includes a mechanism in which a turntable rotating a storing medium, which is referred to as a winding carrier and which winds and laminates the wire, is provided to the wire discharged at a constant speed, and the turntable eccentrically revolves while minutely rotating.
According to the winders disclosed in PTLs 2 and 3, the wire inside the container can be stored at a trajectory which is circular and in which each circle is deviated in the rotational direction of the container or an opposite direction thereof. In the above-described storage, the string-like material can be uniformly stored inside the container.
In the method for storing the string-like material disclosed in PTL 1, the string-like material is stored in a spiral shape. However, when the stored string-like material is discharged from the storage container at a resting state, the string-like material may be entangled. This is considered to be because the magnitude of the twisting of the discharged string-like material is different depending on the size of the spiral circle and twisting is easily generated.
Moreover, in the storage mechanism of the wire disclosed in PTLs 2 and 3, power is transmitted via several gears or shafts from a single drive system and drives other rotations, and thus, the mechanism is complicated. Moreover, when the storage form is adjusted, there is a problem in that a member-changing operation such as changing gears and adjusting a gear ratio, or the like is required.
An object of the present invention is to provide a method for storing a string-like material capable of uniformly storing the string-like material inside a container according to a trajectory, which is circular and in which each circle is deviated in a rotational direction of the container or an opposite direction thereof, even by a simple storage mechanism, and in which disadvantages such as entanglement do not easily occur when the string-like material is discharged from a resting state, and a storage package in which the string-like material is stored in the storage container.
[1] A storage package for a string-like material which stores the string-like material and is a tubular shape, including:
a storage container which stores the string-like material; and
a tubular core rod which is mounted on a center of a bottom of the storage container,
wherein the string-like material is a plurality of continuous loop shapes, and each loop of the plurality of loops is laminated so that a winding center is deviated around an axis of the storage container.
[2] In the storage package for a string-like material described in [1], the plurality of continuous loops have substantially the same shapes.
[3] In the storage package for a string-like material according to [1] or [2], the string-like material which forms the plurality of loops is disposed so as to enclose the core rod which is mounted on the storage container.
[4] In the storage package for a string-like material according to any one of [1] to [3], at least a portion of each loop of the plurality of loops is disposed so as to pass the vicinity of an outer wall of the core rod of the storage container and the vicinity of an inner wall surface of the storage container.
[5] In the storage package for a string-like material according to any one of [1] to [4], the vicinity of the outer wall of the core rod of the storage container is a region in which a distance from the outer wall of the core rod is within 30% of a difference between the radius of the storage container and the radius of the core rod, and the vicinity of the inner wall surface of the storage container is a region within 30% of the difference between the radius of the storage container and the radius of the core rod.
[6] In the storage package for a string-like material according to any one of [1] to [5], a minimum bending radius R of each loop of the plurality of loops is equal to or more than the radius of the core rod.
[7] In the storage package for a string-like material according to any one of [1] to [7], when a distance between two adjacent points in which the loop shapes of the string-like material cross is represented by a (mm) and an outer diameter of the string-like material is represented by d (mm) in the innermost circumference side of the storage container, a relationship of d<a<10d is satisfied.
[8] In the storage package for a string-like material according to any one of [1] to [7], the height of the tubular core rod is 100% to 150% of the highest lamination height of the laminated string-like material.
[9] In the storage package for a string-like material according to any one of [1] to [8], the string-like material is a hollow string.
[10] In the storage package for a string-like material according to any one of [1] to [9], the string-like material is a hollow braided string.
[11] In the storage package for a string-like material according to any one of [1] to [10], a storage starting end of the string-like material is disposed in a position which is at least higher than the highest lamination height of the laminated string-like material.
[12] In the storage package for a string-like material according to [11], the storage starting end of the string-like material protrudes outside the storage container.
[13] A method for storing a string-like material, which stores the string-like material in a rotating tubular storage container by periodically repeating a change pattern in which a rotational speed R (rpm) of the storage container is gradually decreased after being gradually increased or the rotational speed R is gradually increased after being decreased while the string-like material is supplied into the storage container at a constant speed, including the steps of: generating a place in which string-like materials disposed in the container cross while the storage container is rotated twice, deviating a disposition trajectory of the string-like material formed during one period T (second) of a periodic change of the rotational speed R (rpm) in a rotational direction of the storage container or a direction opposite to the rotational direction, and setting a supply speed v (m/minute) of the string-like material, one period T (second), and the rotational speed R (rpm) of the storage container so that an average rotational speed Ra (rpm) of the storage container during one period T (second) satisfies a condition represented by the following Equation (1).
R
a
>v/L (1)
(In Equation (1), L (m) is a circumference of the inner wall surface side of the storage container).
[14] The method for storing the string-like material according to [13], further including the step of: setting the change pattern of the rotational speed (R) (rpm) of the storage container so that a portion of the disposition trajectory of the string-like material formed when the storage container is rotated once passes through the vicinity of an outer wall of a core rod of the storage container and the vicinity of an inner wall surface of the storage container.
[15] In the method for storing the string-like material according to [14], the vicinity of the outer wall of the core rod is a region within 30% of a difference between the radius of the storage container and the radius of the core rod, and the vicinity of the inner wall surface is a region within 30% of the difference between the radius of the storage container and the radius of the core rod.
[16] In the method for storing the string-like material according to any one of [13] to [15], Ra satisfies a condition of the following Equation (2).
6v/5L<Ra<4v/L (2)
[17] The method for storing the string-like material according to any one of [13] to [16], further including the step of: setting a bending radius R of the disposition trajectory of the string-like material so that a relationship of L/4π<R<L<2π is satisfied.
[18] In the method for storing the string-like material according to any one of [13] to [17], d<a<10d is satisfied when a distance between a starting point and an ending point of the disposition trajectory of the string-like material formed during one period T (second) of a periodic change of the rotational speed R (rpm) is represented by a (mm) and an outer diameter of the string-like material is represented by d (mm).
[19] The method for storing the string-like material according to any one of [13] to [18], further including the step of: setting the change pattern of the rotational speed R (rpm) of the storage container so that the disposition trajectory of the string-like material formed when the storage container is rotated twice encloses a rotating shaft of the storage container.
[20] In the method for storing the string-like material according to any one of [13] to [19], Ra satisfies a condition of the following Equation (3).
6v/5L<Ra<12v/5L (3)
[21] In the method for storing the string-like material according to any one of [13] to [20], a condition of the following Equation (4) is satisfied when a change width of the rotational speed of the storage container is represented by Rw (rpm).
0.64Ra<Rw<2Ra (4)
[22] The method for storing the string-like material according to any one of [13] to [21], further including the step of: supplying the string-like material to the storage container from above the storage container and the vicinity of the inner wall surface.
[23] In the method for storing the string-like material according to any one of [13] to [22], the string-like material is a hollow string.
[24] In the method for storing the string-like material according to any one of [13] to [23], the string-like material is a hollow braided string.
According to a method for storing a string-like material, the string-like material can be uniformly stored inside a container according to a trajectory, which is circular and in which each circle is deviated in a rotational direction of the container or an opposite direction thereof, even by a simple storage mechanism, and disadvantages such as entanglement do not easily occur when the string-like material is discharged from a resting state.
<String-Like Material>
As a string-material used in the present invention, a hollow string-like material is appropriately used in which a cross-section perpendicular to a central axis in a longitudinal direction has an approximately circular shape and which includes a structure having one or more spaces along the longitudinal direction in the inner portion. As a specific example of the string-like material, there are string-materials which are braided from multifilament such as hollow netted strings or braided strings and have high flexibility. Among these, for example, from the viewpoint of particularly exerting effects of the present invention, a hollow string such as the hollow netted string or the hollow braided string is preferable, and the hollow braided string is more preferable.
Moreover, as for string-like materials, in addition to the hollow string-like material, a solid string-like material can be used.
In addition, as for the string-like material, a hollow or string-like support for supporting a hollow porous membrane which is used as a filtration film may be used.
The outermost diameter of the string-like material is not particularly limited, and the dimension of approximately 1 to 5 mm is preferable in the present invention.
<Storage Apparatus>
(Storage Container)
An outer diameter of the storage container 12 is appropriately selected according to a storage amount of the string-like material 11, a discharging form of the string-like material 11, or the like.
In the present embodiment, as shown in
In addition, the height of the core rod is preferably 100 to 150% of the highest lamination height of the laminated string-like material.
Here, “the highest lamination height” means the distance from the bottom surface of the storage container 12 to the highest point in which the string-like material is laminated.
(Rotating Table)
The rotating table 13 which rotates the storage container 12 is not particularly limited if it can easily install the storage container 12 and can periodically change rotational speed R. Preferably, the rotating table 13 is a driving type table which can set the change pattern of the rotational speed R of the storage container 12 in advance and includes a controller function which can input a program to change the pattern of the rotational speed R.
(Supply Guide)
In the present embodiment, the supply guide 14 is mounted above the storage container 12 and in the vicinity of the inner wall surface of the storage container 12. Here, the “vicinity of the inner wall surface” means a range within approximately ten times the outer diameter a (approximately 2.5 mm in a case of the braided string) of the string-like material from the inner wall surface. In this way, if the supply guide 14 is mounted, the string-like material 11 can be uniformly stored inside the storage container 12.
The supply guide 14 is not particularly limited if the string-like material 11 can pass through and the supply position of the string-like material 11 can be fixed. However, the supply guide preferably has a ring shape which is larger than the outer diameter of the string-like material 11. In addition, the surface of the ring shape is more preferably a smooth shape without burrs or the like.
<Storage Method>
An embodiment of a method for storing the string-like material 11 using the storage apparatus 10 will be described.
In the present embodiment, the string-like material 11 is stored in the storage container 12 by periodically repeating a change pattern in which the rotational speed R (rpm) of the storage container 12 is gradually decreased after being gradually increased or the rotational speed R is gradually increased after being decreased while the string-like material 11 is supplied into the rotating storage container 12 at a constant speed via the supply guide 14. At this time, as shown in
Moreover, the supply speed v (m/minute) of the string-like material 11, one period T (second), and the rotational speed R (rpm) of the storage container 12 are set so that the disposition trajectory of the string-like material 11 formed during one period T of the periodic change of the rotational speed R is deviated in a direction opposite to the rotational direction of the storage container 12.
In addition, the supply speed v (m/minute) of the string-like material 11, one period T (second), and the rotational speed R (rpm) of the storage container 12 are set so that an average rotational speed Ra (rpm) of the storage container 12 satisfies the condition represented by the following Equation (1).
R
a
>v/L (1)
In addition, in Equation (1), L (m) is the circumference of the inner wall surface side of the tubular container (the storage container 12 in the present embodiment).
The average rotational speed Ra is preferably set so as to satisfy the following Equation (2).
6v/5L<Ra<4v/L (2)
The average rotational speed Ra is more preferably set so as to satisfy the following Equation (3).
6v/5L<Ra<12v/5L (2)
The lower limit of Equation (2) is a case where the string-like material is transferred at a maximum length while the storage container is rotated once, that is, is a minimum average rotational speed, and the upper limit of Equation (2) is a case where the string-like material is transferred at a minimum length while the storage container is rotated once, that is, is a maximum average rotational speed.
The lower limit of Equation (3) is the same value as Equation (2), and the upper limit of Equation (3) is a maximum average rotation speed in a case where the string-like material is transferred at a minimum length when one loop has a shape for necessarily enclosing the center of the container while the storage container is rotated once.
As shown in
In the present invention, the radius of the arc of the string-like material is decreased by increasing the rotational speed R, the radius of the arc of the string-like material 11 is increased by decreasing the rotational speed R, and thus, the disposition trajectory of the string-like material 11 can be a circular trajectory which is eccentric from the rotating shaft. For example, as shown in
In addition, as shown in
The “container radius of the storage container” or the “radius of the storage container” means the distance from the center of the storage container 12 to the inner wall surface of the storage container.
A portion of the disposition trajectory of the string-like material 11 formed when the storage container 12 is rotated once sets the change pattern of the rotational speed R (rpm) so that the distance d2 from the outer wall of the core rod is within 30% of the difference d1 between the radius of the storage container and the radius of the core rod and the distance d3 from the inner wall of the storage container is within 30% of the difference d1 between the radius of the storage container and the radius of the core rod, and thus, the string-like material can be more uniformly stored in the storage container 12.
In addition,
If a portion of the disposition trajectory of the string-like material 11 passes through an intermediate region 12a and an outer circumferential region 12b, the string-like material 11 can be more uniformly stored further in the entire storage container 12.
In addition, in the present embodiment, the change pattern of the rotational speed R (rpm) of the storage container 12 is set so that the disposition trajectory of the string-like material 11 formed when the storage container 12 is rotated twice encloses the rotating shaft C of the storage container 12. If the disposition trajectory of the string-like material 11 formed when the storage container 12 is rotated twice encloses the rotating shaft C of the storage container 12, when the core rod 15 is mounted on the container 12, the storing form is easily stable. Moreover, since the length of the string-like material 11 which is stored per rotation of the container when the string-like material 11 is stored in the container 12 can be lengthened, anchorage of the string-like material 11 per unit length is decreased, and thus, entanglement does not easily occur when the string-like material 11 is discharged in a state where the container 12 is in a resting state.
In addition, from the viewpoint of the storage efficiency, when a distance between a circular starting point and a circular ending point of the string-like material 11 formed during one period T is represented by a (mm) and an outer diameter of the string-like material 11 is represented by d, one period T is preferably set so as to satisfy a condition of d<a<10d. If d<a is satisfied, it is possible to suppress the adjacent loops from being laminated in the height direction, and if a<10d is satisfied, the string-like material can be stored in a dense state in the storage package.
(Setting of Change Pattern of the Rotational Speed R)
The change pattern of the rotational speed R can be set according to the following method in order to make the disposition trajectory shown in
First, when the change pattern of the rotational speed R is set, the average rotational speed Ra of the change pattern of the rotational speed R is set.
Thereby, the stored length of the string-like material 11 per rotation of the storage container 12 is obtained. In the disposition trajectory shown in
Moreover, simultaneously, one circle of the string-like material 11 to be obtained is formed, the circumference length is measured, and the stored length Lr (m/revolution) of the string-like material 11 per rotation of the storage container 12 is obtained from the measured value.
Moreover, the average rotational speed Ra (rpm) is obtained from the stored length Lr (m/revolution) and the supply speed v (m/minute) of the string-like material 11. Specifically, Ra is obtained from Ra=v/Lr.
Subsequently, one period T (refer to
Thereby, time (rotational period Ta) per rotation of the container from the average rotational speed Ra determined as above is determined from Ta=60/Ra.
Moreover, a deviation angle between the circular disposition trajectory of the string-like material 11 formed during one revolution of the storage container 12 and the circular disposition trajectory formed during the next one revolution of the storage container 12 is determined. At this time, in order to provisionally determine the period T, the deviation angle may be provisionally determined by estimating the disposition shape of the string-like material 11 formed as shown in
Time ΔT (second) for generating the deviation angle Δθ(°) is obtained from ΔT=Ta·)Δθ/360(°).
Moreover, one period T is Ta+ΔT. Therefore, one period T can be obtained from Ta+Ta·Δθ/360.
In addition, if ΔT (second) is 0 second, T=Ta is satisfied, the rotation angle of the storage container 12 during one period of the periodic change of the rotational speed R becomes 360°, and thus, the deviation for every one period T in the circular disposition trajectory of the string-like material 11 is not present. This case does not become the disposition trajectory in which the circles are slightly deviated as shown in
Moreover, the change width of the rotational speed R is determined.
The larger the change width of the rotational speed R, the larger the eccentricity of the trajectory of the string-like material 11 from the rotating shaft of the storage container 12. In addition, the smaller the change width of the rotational speed R, the smaller the eccentric state. If the change width is 0, the trajectory of the string-like material 11 has the rotating shaft C as the center.
Since the change width also depends on the flexibility or the supply speed of the string-like material 11, even though the intended disposition trajectories are the same as each other, the change width cannot be univocally determined, and it is necessary to appropriately select the change width according to the flexibility or the supply speed of the string-like material 11.
Thereby, first, the change width of the rotational speed R is provisionally set, and the trajectory of the string-like material 11 in the change pattern of the rotational speed R (the average rotational speed and one period are represented by Ra and T respectively) is observed. The obtained trajectory is close to the center of the rotating shaft C, and thus, when the trajectory is required so as to be distant from the rotating shaft C, the change width of the rotational speed R is increased. The obtained trajectory is distant from the center of the rotating shaft, and thus, when the obtained trajectory is required so as to be close to the rotating shaft C, the change width of the rotational speed R is decreased. Thereafter, the trajectory of the string-like material 11 is observed again, and the change width is adjusted when the observed trajectory is different from the desired trajectory. The change width is determined by repeating the adjustment of the change width.
Moreover, if necessary, from the viewpoint of the storage efficiency, one period T may be further finely adjusted. That is, the deviation angle Δθ(°) can be decreased by performing a fine correction which decreases ΔT (second), and thus, the storage efficiency can be further increased.
As described above, the change pattern of the rotational speed R is set by determining the average rotational speed Ra, one period T, and the change width of the rotational speed R.
When the change width of the rotational speed R is represented by Rw (rpm), Rw preferably satisfies the following Equation (4).
0.64Ra<Rw<2Ra (4)
If the change width Rw is less than 0.64Ra, the loop of the string-like material is not eccentric, and there is a concern that the loop may not be disposed in the vicinity of the outer wall of the core rod or the vicinity of the inner wall of the container. In addition, if the change width is larger than 2Ra, there is a concern that the loop of the string-like material may not be finely stored in the storage package.
In addition, the rotation of the storage container 12 is carried out by the rotation of a motor which drives the rotating table. However, in general, it is difficult to smoothly change the rotational speed of the motor. Therefore, it does not need to strictly follow the change pattern of the rotational speed R obtained as described, and the rotational speed R may be changed in a step shape while having the change pattern as the target value.
Moreover, it is also considered that the change pattern of the set rotational speed R and the change pattern of an actual rotational speed R are different from each other. When the deviation angle AO is small, and if the target change pattern is different, a great influence may occur. Thus, the rotational period Ta of the storage container 12 is measured, and when the rotational pattern is not the target rotational pattern, preferably, the average rotational speed Ra is finely adjusted.
As described above, in the method for manufacturing the string-like material of the present embodiment in which a place where the string-like material 11 crosses is generated in the disposition trajectory of the string-like material 11, formed when the storage container 12 is rotated twice, and the disposition trajectory of the string-like material 11 formed during one period T (second) is deviated in the direction opposite to the rotational direction of the storage container 12, and the average rotational speed Ra (rpm) satisfies Ra>V/L, even with the simple storage mechanism, then the string-like material 11 can be uniformly stored inside the storage container 12 according to the trajectory which is circular and in which each circle is deviated in the direction opposite to the rotational direction of the storage container 12. In addition, since the twisting is decreased when the string-like material 11 is discharged from the storage container 12 at a resting state, the twisting is decreased, and an occurrence such as entanglement can be prevented. Moreover, in a case where the place in which the string-like material 11 crosses is not generated in the disposition trajectory of the string-like material 11, when the average rotational speed Ra (rpm) does not satisfy Ra>v/L, the disadvantage when the string-like material 11 is discharged cannot be prevented. When the circular trajectory of the string-like material 11 is not deviated, a uniform storage is not easily performed.
(Storage Package)
A storage package 20 according to the present invention includes the storage container 12, and the tubular core rod 15 which is mounted in the center of the bottom of the storage container 12. In the storage container 12, the string-like material 11 forms a plurality of continuous loop shapes, and each loop is stored in a state where the winding center of the loop is deviated around the core rod 15 and the loop is laminated.
The plurality of loop shapes of the laminated string-like material preferably have substantially the same shape as one another.
Here, the “substantially same shape” may be the state in which the string-like material 11 stored in the storage container 12 forms the plurality of continuous loop shapes and the winding center of each loop is deviated around the core rod 15 and the loop is laminated, and means that the substantially same shape also includes a shape in which each loop shape of the string-like material 11 is not completely the same.
The string-like material 11 which forms the plurality of loops is preferably disposed so as to enclose the core rod 15 mounted on the storage package 20.
At least a portion of each loop of the plurality of loops is more preferably disposed so as to pass the vicinities of the outer wall of the core rod and the inner wall surface of the storage container.
Here, the storage package 20 includes the following configurations (1) to (3).
(1) The storage container 12
(2) The tubular core rod 15 which is mounted in the center of the bottom of the storage container 12
(3) The string-like material 11 which forms the plurality of continuous loop shapes
In addition, the “vicinity of the outer wall of the core rod” and the “vicinity of the inner wall surface” are the same as the above-described definition.
“Being disposed so as to enclose the core rod” means that the laminated string-like material 11 encloses the core rod and forms the plurality of loop shapes.
“Being disposed so as to pass the vicinity of the outer wall of the core rod and the vicinity of the inner wall surface of the storage package” means that a portion of the string-like material 11 which forms the plurality of laminated loop shapes passes the regions of the vicinity of the outer wall of the core rod and the vicinity of the inner wall surface of the storage container 12.
Moreover, “the outer wall of the core rod” means the outer circumferential surface of the core rod 15.
According to the above-described disposition, load collapse of the stored string-like material does not easily occur.
Moreover, a storage starting end 23 of the string-like material is preferably disposed in a position which is at least higher than the highest lamination height of the laminated string-like material and more preferably protrudes outside the storage container 12. Thereby, the connection of the string to the string-like material which is stored in the next storage container is easily performed.
Here, the “storage starting end” is the end of the string-like material 11 stored in one storage package 20 and means a portion in which the string is connected to the string-like material which is stored in the next container.
The outer diameter of the string-like material is preferably 0.5 mm to 5.0 mm.
The inner diameter of the storage container is preferably 400 mm to 500 mm.
The height of the storage container is preferably 500 mm to 1000 mm.
The outer diameter of the core rod is preferably 100 mm to 150 mm.
The storage package according to the present invention may include a cover on the upper portion of the storage container.
A minimum bending radius R of each loop of the plurality of loops of the string-like material stored in the storage package is preferably equal to or more than the radius of the core rod 15. According to the setting, the anchored state at the time of the discharging becomes uniform, and a bending tendency does not easily remain in the string-like material.
The bending radius R of the plurality of loops may be constant from the starting point of the loop to the ending point, or may be changed.
As shown in
Here, “the innermost circumference side of the storage container 12” means a portion in which the distance from the center of the storage container 12 is the closest distance.
If d<a is satisfied, it is possible to suppress the adjacent loops from being laminated in the height direction, and if a<10d is satisfied, the string-like material 11 can be stored in a dense state in the storage container 12.
In addition, the present invention is not limited to the above-described embodiment. For example, in
Moreover, as shown in
In addition, as shown in
Moreover, as shown in
The circular trajectory of the string-like material 11 may also be deviated in the rotational direction of the storage container 12. In this case, one period T of the periodic change of the rotational speed R is set to Ta−ΔT, that is, to Ta−Ta−Δθ/360.
Moreover, in the present invention, the supply guide 14 may not be mounted above the storage container 12 and in the vicinity of the inner wall surface of the storage container 12. For example, the supply guide may be mounted above the storage container 12 and in the vicinity of the center of the rotating shaft.
In addition, in the present invention, the shape of the container is not limited to the cylinder and may be a tubular container in which the bottom surface has a polygon (rectangle, hexagon, octagon, or the like).
Moreover, the shape of the core rod mounted on the storage container is preferably a cylindrical shape. However, the shape of the core rod is not limited to a cylindrical shape.
Hereinafter, the present invention will be specifically described according to Examples. However, the present invention is not limited thereto.
As the stored string-like material, a braided string having an outer diameter of about 2.5 mm and an inner diameter of about 1.8 mm in which raw polyester yarns (“84dtex-72fil” made by NANYA), circularly made while being bundled five times, was used. The braided string was supplied to a container while being continuously braided at a speed of 100 m/hour and was stored.
The configuration shown in
The rotating table 13 was used which had a structure which was rotated by the driving of a brushless DC motor (made by the ORIENTAL COMPANY) controllable in the range of 0.4 to 20 rpm. A change pattern program was input in a sequence in advance, and the rotational speed R was changed by a system in which the rotational speed command was output to the motor driver according to the change pattern of the rotational speed R from the sequence at the same time of pushing a start button.
As the supply guide 14, a snail guide (made by the YUASA THREAD GUIDE INDUSTRY COMPANY) having a hole diameter of about 6 mm was used. The supply guide 14 was mounted above the storage container 12 and in the vicinity of the inner wall surface of the storage container 12. Thereby, the braided string dropped through the supply guide 14 and substantially contacted the inner wall surface of the storage container 12.
The period T and the rotational speed R were set so that the place in which the braided string crossed twice was generated in the disposition trajectory of the braided string formed when the storage container 12 was rotated twice as shown in
According to the change pattern of the rotational speed R, the braided string (string-like material) 11 was stored inside the storage container 12 while the storage container 12 was rotated. As a result, the braided strings of the amount of about 10,000 m were stored during the storage time of about 100 hours according to the disposition trajectory shown in
This storing form was not easily collapsed, and when the braided string was discharged at a speed of 10 m/minute from the stationary storage container 12, the braided string could be stably discharged without occurrence of entanglement.
The period T and the rotational speed R were set so that the place in which the braided string crossed was not generated in the disposition trajectory of the braided string formed when the storage container 12 was rotated twice, and the disposition trajectory of the braided string formed during one period T was formed in a spiral shape using the above-described storage apparatus 10. Specifically, the change pattern of the rotational speed R of a step shape shown in
According to the change pattern of the rotational speed R, the braided string (string-like material) 11 was stored inside the storage container 12 while the storage container 12 was rotated. As a result, as shown in
In this storage, gaps were partially formed in the vicinity of the inner wall surface of the storage container 12 and in the vicinity of the core rod 15, and the braided string was dropped to the portions and was stored. Thereby, when the braided string was discharged at a speed of 10 m/minute from the stationary storage container, the braided string was caught and could not be smoothly discharged. Moreover, in the disposition of the spiral shape, since the twisting was increased at the time of discharging and the braided string was discharged in a twisted state, the braided string was deviated from the guide on its path or was caught.
Since a string-like material forms a plurality of continuous loop shapes and each loop is stored in a storage container in a state where a winding center of the loop is deviated and the loop is laminated, the string like-material can be uniformly stored and disadvantages such as entanglement do not easily occur when the string-like material is discharged from the resting state, and thus, for example, a storage package of the string-like material according to the present invention is appropriately used for storing a hollow shaped string-like material.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2010130365 | Jun 2010 | JP | national |
| Filing Document | Filing Date | Country | Kind | 371c Date |
|---|---|---|---|---|
| PCT/JP2011/063074 | 6/7/2011 | WO | 00 | 2/19/2013 |
