JAPANESE PAPER YARN MANUFACTURING DEVICE AND JAPANESE PAPER YARN MANUFACTURING METHOD
A Japanese paper yarn manufacturing device according to the present invention that provides a method for mass-production of inexpensive Japanese paper yarns by saving labor includes a slitter that slits a Japanese paper sheet fed out from a Japanese paper roll into a plurality of Japanese paper tapes each having a narrow width in a feeding direction, and a distributing section that distributes the plurality of slit Japanese paper tapes. An air flow section feeds air into a plurality of the tubes of the distributing section, so that the distributed Japanese paper tapes are sent in a floating manner to a plurality of yarn processing device units.
Latest Patents:
This application claims priority to Japanese Patent Application No. 2019-017947, filed Feb. 4, 2019. The contents of that application are incorporated by reference herein in their entirety.
BACKGROUND Technical FieldThe present invention relates to a novel Japanese paper yarn manufacturing device and a Japanese paper yarn manufacturing method.
Background ArtIn recent years, many products using a Japanese paper yarn that make use of the characteristics of Japanese paper have been provided. A Japanese paper yarn is formed by slitting a sheet of Japanese paper to Japanese paper tapes with widths of about several millimeters and twisting the slit Japanese paper tapes into yarns. Industrially, a sheet of Japanese paper is slit into a plurality of Japanese paper tapes having widths of various sizes by a slitter, and each of the slit Japanese paper tapes is wound into a cheese to obtain a wound body. From these wound bodies, the wound body having the Japanese paper tape with a width required by a twisted yarn manufacturer is purchased and set for each unit of twisting machine or covering machine, so that a twisted or covered Japanese paper yarn is manufactured.
However, when each of Japanese paper tapes is wound into a cheese, when a wound body of the Japanese paper tape is stored, and furthermore, when each of Japanese paper tapes is unwound from the wound body to manufacture a yarn, winding of the Japanese paper tape may collapse. The winding collapse has caused not only material loss, but also yarn breakage and poorer productivity. Further, although cut end portions at both ends of each Japanese paper tape are cut with a sharp blade, fine fluffs are generated. For this reason, the cut end portion entangles with an adjacent Japanese paper tape, and resistance is generated when the tape is unwound. As a result, the Japanese paper tape is often torn when the yarn is produced with a twisting machine or a covering machine, which has been a cause of poor productivity. In the production of Japanese paper yarns, the work of winding Japanese paper tapes, taking out the wound Japanese paper tapes, and setting the tapes in individual twisting machines or covering machines in units are performed manually each time. For this reason, wastes in labor and time loss are large, and have been the bottlenecks in cost reduction.
SUMMARYTherefore, it is conceivable that a Japanese paper sheet is slit with a slitter and then directly made into yarns. However, in a case where the Japanese paper sheet is slit with a slitter, about 100 to 200 Japanese paper tapes are made from a single Japanese paper sheet. However, in order to process all of these Japanese paper tapes into yarns, it is necessary to arrange 100 to 200 twisting machines or covering machines, which are as many as the number of the slit Japanese paper tapes. Even if a large number of twisting machines or covering machines can be prepared, it is necessary to attach the Japanese paper tapes slit by the slitter directly to individual twisting machines or covering machines. In that case, from the standpoint of securing the dimensions of the twisting machine or covering machine and the working space, even if the slitter is placed in the center where it is considered to be a reasonable position, the transport distance of Japanese paper tape from the slitter to the twisting machines or the covering machines that are disposed at both ends is required to be at least about 10 m. When each length of 100 to 200 Japanese paper tapes with a width of about 1 mm to several mm is increased, some tapes may break due to their own weight while passing through the space. However, the present inventor has conducted an experiment and found that there is a possibility that a Japanese paper tape breaks due to friction with an inner wall of the tube even in a distance of around 3 m, in connection with a transport speed necessary to increase the production efficiency of Japanese paper yarns.
In view of the above-mentioned problems, an object of the present invention is to provide a novel Japanese paper yarn manufacturing device and a Japanese paper yarn manufacturing method capable of achieving a labor saving and energy saving and mass-producing inexpensive Japanese paper yarns by continuously supplying the plurality of Japanese paper tapes, which are obtained by slitting the Japanese paper sheet by a slitter, directly to a yarn twisting machines or a covering machines and processing the tapes into a plurality of Japanese paper yarns.
In order to achieve the above object, according to a first preferred aspect of the present invention, there is provided a Japanese paper yarn manufacturing device including a Japanese paper roll that is obtained by winding the long Japanese paper sheet in a roll shape, a slitter that slits the Japanese paper sheet fed out from the Japanese paper roll into the plurality of Japanese paper tapes each having a narrow width in a feeding direction, a distributing section provided with a plurality of tubes each having an inner diameter that allows each of the slit Japanese paper tapes to pass through, an air flow section that creates flow of air from an inlet toward an outlet in an inside of the plurality of the tubes, and a plurality of yarn processing device units that processes the Japanese paper tapes distributed by the tubes of the distributing section into the plurality of Japanese paper yarns.
Alternatively, according to a second preferred aspect of the present invention, there is provided a Japanese paper yarn manufacturing device including a Japanese paper roll that is obtained by winding the long Japanese paper sheet in a roll shape, a slitter that slits the Japanese paper sheet fed out from the Japanese paper roll into the plurality of Japanese paper tapes each having a narrow width in a feeding direction, the distributing section provided with the plurality of tubes each having an inner diameter that allows each of the slit Japanese paper tapes to pass through, and the plurality of yarn processing device units that processes the Japanese paper tapes distributed by the tubes of the distributing section into the plurality of Japanese paper yarns.
An installation position of the slitter is higher than a Japanese paper tape supply position to each of the yarn processing device units, and an inclination angle of each tube of the distributing section is at a depression angle of 20 to 60 degrees. More preferably, the inclination angle of each tube of the distributing section is at a depression angle of 30 to 60 degrees.
In the Japanese paper yarn manufacturing device, in the distributing section, one ends of the tubes may be bundled and each of the other ends may be provided in each of the yarn processing device units.
Further, in the Japanese paper yarn manufacturing device, the air flow section may include a plurality of nozzles each provided at an inlet of each of the tubes toward an inside of the tube and one or more pressurizing devices that send compressed air to each of the nozzles.
Further, in the Japanese paper yarn manufacturing device, the air flow section includes a plurality of suction members each provided at an outlet of each of the tubes so as to suck air inside the tube and one or more decompression devices that suck air from each of the suction members.
The Japanese paper yarn manufacturing device may include a suction unit that sucks the torn Japanese paper tape and discharges the torn Japanese paper tape to an outside, and a storage tank that stores a Japanese paper tape discharged by the suction unit.
In the Japanese paper yarn manufacturing device, each of the yarn processing device units may be composed of a twisting device unit or a covering device unit.
Further, in the Japanese paper yarn manufacturing device, the plurality of the yarn processing device units may include a steam generator unit that applies steam into contact with each of the Japanese paper tapes or each of the Japanese paper yarns.
Furthermore, the Japanese paper yarn manufacturing device may include a plurality of yarn breakage detectors that detects breakage of the Japanese paper tape or the Japanese paper yarn.
Next, according to a third aspect of the present invention, there is provided a Japanese paper yarn manufacturing method including the steps of preparing the Japanese paper sheet wound in a roll, feeding out the Japanese paper sheet in a longitudinal direction, slitting the fed-out Japanese paper sheet into the plurality of Japanese paper tapes each having a narrow width in a feeding direction, distributing each of the plurality of the slit Japanese paper tapes through the plurality of tubes, transporting the plurality of the distributed Japanese paper tapes by sending air in transporting direction of each Japanese paper tape in each tube to which each Japanese paper tape is distributed, and processing a plurality of the transported Japanese paper tapes into the plurality of Japanese paper yarns.
Alternatively, according to a fourth aspect of the present invention, there is provided a Japanese paper yarn manufacturing method including the steps of preparing the Japanese paper sheet wound in a roll, feeding out the Japanese paper sheet in a longitudinal direction, slitting the fed-out Japanese paper sheet into the plurality of Japanese paper tapes each having a narrow width in a feeding direction, distributing each of the plurality of the slit Japanese paper tapes through the plurality of tubes, transporting each of the plurality of the distributed Japanese paper tapes in each tube to which each Japanese paper tape is distributed from top to bottom by inclining each tube at a depression angle of 20 to 60 degrees, and processing the plurality of the transported Japanese paper tapes into the plurality of Japanese paper yarns.
According to the Japanese paper yarn manufacturing device and the Japanese paper yarn manufacturing method of the present invention, the Japanese paper sheet fed out from the Japanese paper roll is slit by the slitter, and the obtained plurality of Japanese paper tapes are respectively distributed to the plurality of yarn processing device units by the distributing section including the plurality of tubes and the air flow section. Since the air flow section carries the Japanese paper tapes on the flow of air in individual tubes to the yarn processing device units, most of the Japanese paper tapes are not torn. Therefore, most of the Japanese paper tapes are processed into a Japanese paper yarn.
This series of operations is performed until there is no more Japanese paper sheet in the Japanese paper roll. In this Japanese paper yarn manufacturing device, even if several Japanese paper tapes or Japanese paper yarns break, manufacture of the Japanese paper yarns is performed without stopping the Japanese paper yarn manufacturing device. Therefore, it almost eliminates the need for human operator to perform operation, and labor saving is achieved. Further, the Japanese paper yarns can be manufactured from the Japanese paper sheet in a shortest period of time. For this reason, manufacturing cost can be reduced significantly.
In the Japanese paper yarn manufacturing device and Japanese paper yarn manufacturing method, the Japanese paper tape is fed on the flow of air inside the tube. Accordingly, the Japanese paper tape is carried without resistance associated with contact with the inner surface of the tube, and the Japanese paper tape hardly breaks. When the speed of the air flowing through the tube is the same as or higher than the speed of feeding the Japanese paper tape to the yarn processing device unit, the Japanese paper tape can be fed without air resistance, and the Japanese paper tape hardly breaks.
As shown in
Japanese paper used in the present invention is paper obtained by filtering a slurry form of Japanese paper raw material that mainly includes fibers obtained by beating one or more types of raw material plants suitable for Japanese paper. Examples of the raw material plants suitable for Japanese paper include paper mulberry, oriental paper bush, gampi, hemp, conifers, hardwoods, and bamboo grass. A basis weight suitable for Japanese paper is preferably about 8 to 30 g/m2 in view of manufacturing technology, but it is possible to use Japanese paper having a large basis weight exceeding this range and Japanese paper having a small basis weight lower than this range. Japanese paper used in the present invention may contain a raw material fiber other than the above mentioned Japanese paper raw material as long as the Japanese paper is 20% by weight or less. When a content rate of a fiber other than the Japanese paper raw material exceeds 20% by weight, the hygroscopicity and strength distinctive to Japanese paper become poor, which is unfavorable. In the Japanese paper used in the present invention, a content rate of the above mentioned Japanese paper raw material is further preferably 90% by weight or more in view of product performance.
For the Japanese paper used in the present invention, Japanese paper (Japanese paper sheet 12) of a long sheet shape that has a width of about 200 mm to 500 mm and a length of about 10,000 m to 50,000 m may be used. However, the width and length of the Japanese paper sheet are not limited. The Japanese paper sheet 12 is manufactured so that the directions of the fibers of the Japanese paper raw material are aligned as much as possible in a longitudinal direction. Accordingly, the obtained Japanese paper sheet 12 is formed to be relatively weak against a tensile force in a width direction, while formed to be considerably strong and difficult to be torn by a tensile force in the longitudinal direction. For this reason, the Japanese paper tape 18 having a width of about 0.8 mm to about 30 mm obtained by slitting the Japanese paper sheet 12 in the longitudinal direction is less likely to be torn as compared with paper (Western paper) in which directions of raw material fibers are random. The long Japanese paper sheet 12 is wound around a roller 22 in a roll shape to form the Japanese paper roll 14. The roller 22 is installed in a bearing (not shown) so that the Japanese paper sheet 12 is smoothly fed out from the Japanese paper roll 14. Note that the configuration can be such that the Japanese paper roll obtained by winding the long Japanese paper sheet 12 into a roll is placed on two rotating rolls parallel to each other, and the rotating roll is rotated so that the Japanese paper sheet 12 is fed out from the Japanese paper roll.
[First Transferring Section]The Japanese paper sheet 12 fed out from the Japanese paper roll 14 is sent to the next slitter 16 by a first transferring section 24 at a constant speed. The first transferring section 24 is configured with a pair of rollers 25, a driving unit (not shown), and a speed reducer, and the Japanese paper sheet 12 held between the pair of rollers 25 is transferred to the slitter 16 at a constant speed. The first transferring section 24 may be provided with a mechanism and the like for keeping the tension of the Japanese paper sheet 12 fed out from the Japanese paper roll 14 constant.
[Slitter]The slitter 16 includes a plurality of disk-shaped rotary blades 26 and a backing plate 28. As shown in
The width of the Japanese paper tape 18 slit by the slitter 16 is set in the range of about 0.8 mm to about 30 mm. Since the sum of the thickness of the rotary blade 26 and the thickness of the spacer 30 is the width of the Japanese paper tape 18, the thickness of the spacer 30 is changed in order to change the width of the Japanese paper tape 18. For example, in order to obtain 160 sheets of Japanese paper tapes 18 from one Japanese paper sheet 12, 161 pieces of rotary blades 26 and 160 spacers 30 are alternately disposed. Both ends of the Japanese paper sheet 12 cut by the rotary blade 26 are collected as unnecessary margins and used as a raw material for new Japanese paper. The number of the Japanese paper tapes 18 slit by the slitter 16 is 100 to 200. However, the number is not limited to this number. The number may be 100 or less, or 200 or more. The number of the Japanese paper tapes 18 is determined by the relationship between the width of the Japanese paper sheet 12 to be used and the width of the Japanese paper tape 18 to be cut.
The surface of the backing plate 28, which is constantly in contact with a blade edge of the rotary blade 26, is made of a material that is soft so as not to damage the blade edge and has hardness that allows the Japanese paper sheet 12 to be cut. The backing plate 28 may be a flat plate. However, the backing plate 28 can be configured with a cylindrical or tubular body that can be rotated simultaneously with the blade edge of the rotary blade 26.
Other than the above, the slitter 16 can also be configured with a plurality of knives 36 as shown in
The intervals between the rotary blades 26 or the knives 36 of the slitter 16 may, however not limited to, be equal. For example, the Japanese paper tape 18 having a 1-mm width and the Japanese paper tape 18 having a 2-mm width can be manufactured simultaneously. In this case, different Japanese paper yarns are manufactured simultaneously.
When the Japanese paper sheet 12 is slit by the slitter 16, a considerable amount of fine paper dust is generated and accumulates on the surface of the surrounding frame and other members. If this paper dust is left unattended, accumulated paper dust may cause the Japanese paper tape 18 to break, or may cause other troubles in the Japanese paper yarn manufacturing device. In view of the above, it is preferable to provide a paper dust suction unit (not shown) in the vicinity of the slitter 16. Note that if the torn Japanese paper tape discharging section described later is of a suction type, the torn Japanese paper tape discharging section can also be used as the paper dust suction unit.
[Second Transferring Section]The plurality of Japanese paper tapes 18 slit by the slitter 16 is sent to a next process by the second transferring section 38. The second transferring section 38 is configured so that a pair of rollers 39 is able to sandwich the plurality of slit Japanese paper tapes 18. The second transferring section 38 is driven by a driving unit (not shown) in a similar manner as the first transferring section 24 described above. The first transferring section 24, the rotary blade 26 of the slitter 16, and the second transferring section 38 are preferably synchronized.
Here, the Japanese paper sheet 12 fed out from the Japanese paper roll 14 is first sandwiched between the first transferring section 24 and the second transferring section 38 and stretched with an appropriate tension. In this state, the Japanese paper sheet 12 is set so as to be slit in the feeding direction by the slitter 16, and, when the Japanese paper sheet 12 is sent by the second transferring section 38, the Japanese paper sheet 12 is slit by the slitter 16 at a predetermined width, and the plurality of slit Japanese paper tapes 18 are sent out from the second transferring section 38. A leading end portion of the Japanese paper sheet 12 transferred by the second transferring section 38 that is not slit by the slitter 16 is cut off. The plurality of Japanese paper tapes 18 slit in the feeding direction, which are sandwiched by the pair of rollers 39 of the second transferring section 38, therefore, are not separated. Further, the sum width of all the slit Japanese paper tapes 18 have substantially the same width as the Japanese paper sheet 12. However, after the Japanese paper sheet 12 passes through the second transferring section 38, margins at both ends of the Japanese paper sheet 12 are collected in a collection box (not shown). The plurality of Japanese paper tapes 18 other than those in the margins at both ends of the Japanese paper sheet 12 are distributed in optional directions via the distributing section 40 and supplied to the yarn processing device units 20.
[Distributing Section]The distributing section 40 can be configured by bundling the tubes 42, which each have an inner diameter sufficiently larger than the width of the Japanese paper tape 18, for example, an inner diameter of 4 mm to 10 mm, of as many as the number of the Japanese paper tapes 18. For example, as shown in
Each of the Japanese paper tapes 18, which is inserted into the individual tubes 42, can be easily inserted by inserting the Japanese paper tape 18 from one end of the tube 42 while air is sucked from the other end of the tube 42. That is, the configuration includes a plurality of suction members (not shown) that are arranged so as to suck air inside of the plurality of tubes 42 at the outlets which are the other ends of the tubes 42, and one or more decompression devices (not shown) that suck air from the suction members. The suction members and the decompression devices constitute the air flow section. In this manner, the plurality of Japanese paper tapes 18 can be distributed to the yarn processing device units 20 at optional locations. Note that the tube 42, which may have a slit in the longitudinal direction on the side, can preferably hold the flow of air in the inside. After each of the plurality of Japanese paper tapes 18 passes through the plurality of tubes 42, the suction members are removed from the individual outlets of the tubes 42, and one or more decompression devices are stopped.
The Japanese paper tape 18 inserted into the tube 42 is transported by the air flow section 43 shown in
The air flow section 43 is provided with a chamber surrounding, for example, at least the inlet portions of the plurality of tubes 42 and the pair of rollers 39 of the second transferring section 38, and the pressure in the chamber is pressurized by a pressurizing device. As a result, the air in the chamber is discharged to the individual outsides through the insides of the tubes 42, and this action creates the flows of air in the plurality of tubes 42. The Japanese paper tapes 18 are transported on the flows of air. The flow rate of the flows of air is preferably about 2 to 30 times the traveling speed of each of the Japanese paper tapes 18.
[Torn Japanese Paper Tape Discharging Section]A tip portions that are outlets of the tube 42 are disposed in the vicinity of the yarn processing device units 20. Each of the Japanese paper tapes 18 that is transported through the inside of the tube 42 is directly supplied to each of the yarn processing device units 20. As shown in
As shown in
That is, in a case where any one of the obtained Japanese paper tapes 18 is torn when the Japanese paper sheet 12 is slit by the slitter 16, the torn Japanese paper tape 18 is sucked and removed by the torn Japanese paper tape discharging section 86 from the leading end of the torn position. Therefore, since the torn Japanese paper tape 18 is not sent to the next process, the cause of the trouble is eliminated. Further, a rear portion of the torn Japanese paper tape 18 preferably directly passes through the second transferring section 38 and the distributing section 40 so that a covering yarn 62 or a Japanese paper yarn 72 is manufactured, and the corresponding yarn processing device unit 20 is preferably stopped when the Japanese paper tape is torn.
Further, in a case where the Japanese paper tape 18 is torn after passing through the second transferring section 38 and before being sent to the yarn processing device unit 20, the torn Japanese paper tape 18 is sucked and removed by the torn Japanese paper tape discharging section 88 from the leading end of the torn position. Even if the torn portion is in the tube 42 of the distributing section 40, the torn Japanese paper tape 18 is pulled back and removed by the torn Japanese paper tape discharging section 88. The torn Japanese paper tape 18, which is sequentially sent by the second transferring section 38, is sucked and removed by the torn Japanese paper tape discharging section 88. Further, a rear portion of the torn Japanese paper tape 18 is directly sent to the yarn processing device unit 20, to manufacture the covering yarn 62 or the Japanese paper yarn 72. Note that the yarn processing device unit 20, which may be driven continuously, is preferably configured to be able to be stopped.
[Yarn Processing Device Unit]The Japanese paper tapes 18 distributed by the distributing section 40 are supplied to the individual yarn processing device units 20 at the optional positions. The yarn processing device unit 20 is configured with the twisting device unit or the covering device unit, and the plurality of yarn processing device units 20 can be obtained by selecting one type or combining more than two types of these twisting device units or the covering device units. That is, it is not necessary to manufacture all of the plurality of Japanese paper tapes 18 into the same type of Japanese paper yarn by the yarn processing device unit 20, but different types of the plurality of Japanese paper yarns can also be manufactured at the same time. Specific configurations of the twisting device unit and the covering device unit will be described later.
The plurality of yarn processing device units 20, which can be arranged in a horizontal row as shown in
Further, as shown in
As an example of the yarn processing device unit 20, there is the covering device unit 46 shown in
In such a configuration, the secondary yarn 54 fed out from the wound body 56 is wound around the Japanese paper tape 18 that travels between the feed roller 60 and the feed roller 61. That is, when the Japanese paper tape 18 and the secondary yarn 54 are combined and sent to the winder 58, the wound body 56 is rotated around the Japanese paper tape 18 together with the rotating tubular body 50 by the traveling belt 49, and the secondary yarn 54 is wound around the Japanese paper tape 18. By adjusting the feed speed of the Japanese paper tape 18 and the rotating speed of the rotating tubular body 50, appropriate covering is obtained, and the covering yarn 62 covered by the secondary yarn 54 is wound around the winder 58. Further, by reversing the traveling direction of the traveling belt 49, the winding direction can be reversed, and S winding or Z winding can be obtained optionally.
In such an embodiment, a partner yarn 64 can also be supplied from the feed roller 60 so as to be provided along each of the Japanese paper tapes 18. In this manner, the covering yarn 65, in which the secondary yarn 54 is wound by combining the Japanese paper tape 18 and the partner yarn 64, can be obtained. The number of the partner yarns 64 is not limited to one, and a plurality of partner yarns 64 may be used. In this case, different types of the partner yarns 64 can also be used in combination.
In the above-described embodiment, the configuration may be such that a plurality of wound bodies 56, in which the secondary yarn 54 is wound around the hollow bobbin 52, is installed in series on the rotating tubular body 50, and the covering yarn covered with a plurality of the same or different types of the secondary yarns 54 is formed. Note that the secondary yarn 54 or the partner yarn 64 is preferably, but not particularly limited to, a long fiber.
Note that the configuration of the covering device unit described above is merely an example, and the covering device unit having another configuration may be used without limitation.
[Twisting Device Unit]As another example of the yarn processing device unit 20, there is the twisting device unit 66 shown in
In such a configuration, Each of the spindles 68 rotated by the traveling belt 49 rotates the hollow bobbin 70 that is externally mounted on the spindle, and rotates both of the Japanese paper tape 18 (Japanese paper yarn 72) having an end portion fixed to the hollow bobbin 70 and the traveler 78 in such a manner as to swing, then twist the Japanese paper tape 18 into the Japanese paper yarn 72. In such operation, the Japanese paper tape 18 is twisted at the point just coming out of the feed roller 60. The Japanese paper yarn 72 is wound around the hollow bobbin 70 when the Japanese paper tape 18 is sequentially fed by the feed roller 60. At this time, the ring 77 is moved up and down, and the Japanese paper yarn 72 is evenly wound around the hollow bobbin 70.
As described above, the Japanese paper sheet 12 can be slit by the slitter 16, and the plurality of slit Japanese paper tapes 18 can be directly processed into the Japanese paper yarns 72 by the plurality of the twisting device units 66. In this process, if an operator first makes an arrangement, no work is required after that. Accordingly, a significant reduction in manufacturing cost can be expected. Furthermore, since the process of winding the slit Japanese paper tape 18 into cheese is not required, the problem of winding collapse does not occur.
Each of the twisting device units 66 described above can have a configuration in which a water tank is provided just prior to feeding the Japanese paper tape 18 to the feed roller 60, so that the Japanese paper tape 18 may be twisted after being immersed in the water tank or sufficiently moistened with water using a kiss roll, or the like. As an example, a Japanese paper tape having a width of 3.0 mm and a basis weight of 15 g/m2 as shown in
Further, each of the twisting device unit 66 can be configured in such a manner that a steam outlet 80 of a steam generator unit is provided at a position between the feed roller 60 and the snail wire 76, that is, at a position where the Japanese paper tape 18 is twisted to form the Japanese paper yarn 72, and from the steam outlet 80, steam 81 is blown to the Japanese paper yarn 72. The steam 81 is a concept including water vapor, superheated steam, mist (misty air), and the like. The steam generator unit is not regulated as long as it is a device with a configuration that can moisten the surface of the Japanese paper yarn 72 as uniformly as possible. Note that the configuration may be such that a chamber is provided at a position between the feed roller 60 and the snail wire 76, the chamber is filled with the steam 81, and the steam 81 is applied to the surface of the Japanese paper yarn 72. The steam 81 is applied to (brought into contact with) the surface of the Japanese paper yarn 72, which is created by twisting, so that the surface of the Japanese paper yarn 72 is softened by the steam, and the Japanese paper yarn 72 with a smooth surface, although irregularities are present on the entire surface, is formed as shown in
Japanese paper is excellent in breathability, water absorption, sweat absorption, drying property, and divergence. The Japanese paper yarn 72 shown in
In a case where no steam is applied in the process of twisting the Japanese paper tape 18, as shown in
Next, in the twisting device unit 66 shown in
Further, in
Note that the configuration of the twisting device unit 66 described above is merely an example, and the twisting device unit 66 having different configuration may be used without limitation.
[Effect]As shown in the above embodiment, the Japanese paper sheet 12 fed out from the Japanese paper roll 14 is slit into the plurality of Japanese paper tapes 18 having narrow widths by the slitter 16. The plurality of Japanese paper tapes 18 are distributed in optional directions by the distributing sections 40, and are sent to the plurality of the covering device units 46 or the twisting device units 66, so that the plurality of the covering yarns 62 and 65 or the Japanese paper yarns 72 is manufactured. In the described series of manufacturing processes, after the operation of the novel Japanese paper yarn manufacturing device according to the present invention is initiated, the operator is not involved, therefore, labor saving can be achieved. Further, since manufacturing is continuous in each manufacturing process, there is no time loss and the Japanese paper yarn can be manufactured quickly. Therefore, the manufacturing cost of Japanese paper yarn can be greatly reduced, and inexpensive Japanese paper yarn can be provided.
Other EmbodimentsAlthough an example of the Japanese paper yarn manufacturing device according to the present invention has been described together with other embodiments, the present invention is not limited to the above-described embodiments. For example, as shown in
Note that the material of the tubes 42 of the distributing section 40 is preferably one that does not generate static electricity. This is because if the static electricity is generated in the tube 42 for some reason and the Japanese paper tape 18 is attracted to the inner surface of the tube 42, this causes the Japanese paper tape 18 to be torn. Further, in order to improve the sliding between the inner surface of the tube 42 and the Japanese paper tape 18, the inner surface of the tube 42 may be applied with surface treatment with fluorine-based resin or the like that improves the sliding.
Further, in the covering device unit 46 shown in
Although the covering device unit and the twisting device unit have been illustrated and described as the yarn processing device unit, it is needless to say that device configurations of these are not limited to the above-described embodiments, and those having various device configurations can be used. Therefore, the configuration of the manufactured Japanese paper yarn is not limited to the above-described embodiment, either.
The yarn breakage detector 84 is provided on the assumption that the Japanese paper yarn is torn. However, there is a chance where the secondary yarn 54, the partner yarn 64, the auxiliary yarn 82, and the like are torn, therefore, one or the plurality of the yarn breakage detectors 84 may be disposed so that the breakage of these yarns can be detected. In a case where the yarn breakage detector detects that the Japanese paper tape, Japanese paper yarn, secondary yarn, or the like is torn, the covering device unit or the twisting device unit in a subsequent process corresponding to the Japanese paper tape or the like is preferably stopped. However, the present invention is not limited to the above, and may be configured to notify the operator by blinking an alarm lamp or the like.
The traveling belt 49 for rotating the rotating tubular body 50 of the covering device unit 46 and the spindle 68 of the twisting device unit 66 allows a large number of the device units to be driven by one driving unit, and is efficient. However, the traveling belt 49 is inconvenient for driving the twisting device units or the covering device units individually. Therefore, a driving unit may be provided for each device unit without using the traveling belt 49. With this configuration, it becomes possible to immediately stop only a corresponding yarn processing device unit when the Japanese paper tape 18, or the like is torn.
In the Japanese paper yarn manufacturing device according to the present invention, once the manufacturing is started, the manufacturing process continues even if some of the plurality of Japanese paper tapes or Japanese paper yarns are torn. Meanwhile, the torn Japanese paper tape is sucked and removed by the torn Japanese paper tape discharging section, such as a suction unit, so that the manufacture of other Japanese paper yarns is not hindered.
Other than the above, the present invention can be implemented in a mode in which various improvements, modifications, or variations are added based on the knowledge of those skilled in the art without departing in any way from the spirit of the present invention. Further, the present invention may be implemented in a mode where any of the specific matters of the invention is replaced with other techniques within the range in which the same action or effect is generated.
Claims
1. A Japanese paper yarn manufacturing device comprising:
- a Japanese paper roll that is obtained by winding a long Japanese paper sheet in a roll shape;
- a slitter that slits the Japanese paper sheet fed out from the Japanese paper roll into a plurality of Japanese paper tapes each having a narrow width in a feeding direction;
- a distributing section provided with a plurality of tubes each having an inner diameter that allows each of the slit Japanese paper tapes to pass through;
- an air flow section that creates flow of air from an inlet toward an outlet in an inside of the plurality of the tubes; and
- a plurality of yarn processing device units that processes the Japanese paper tapes distributed by the tubes of the distributing section into a plurality of Japanese paper yarns.
2. The Japanese paper yarn manufacturing device according to claim 1, wherein in the distributing section, one ends of the tubes are bundled and each of the other ends is provided in each of the yarn processing device units.
3. The Japanese paper yarn manufacturing device according to claim 1, wherein the air flow section includes a plurality of nozzles each provided at an inlet of each of the tubes toward an inside the tube and one or more pressurizing devices that send compressed air to each of the nozzles.
4. The Japanese paper yarn manufacturing device according to claim 1, wherein the air flow section includes a plurality of suction members each provided at an outlet of each of the tubes so as to suck air inside the tube and one or more decompression devices that suck air through each of the suction members.
5. The Japanese paper yarn manufacturing device according to claim 1, further comprising:
- a plurality of suction units that sucks and discharges any torn Japanese paper tapes to an outside; and
- a plurality of storage tanks that stores any torn Japanese paper tapes discharged by each of the suction units.
6. The Japanese paper yarn manufacturing device according to claim 1, wherein each of the yarn processing device units is a twisting device unit or a covering device unit.
7. The Japanese paper yarn manufacturing device according to claim 1, wherein a plurality of the yarn processing device units includes a steam generator unit that applies steam into contact with each of the Japanese paper tapes or each of the Japanese paper yarns.
8. The Japanese paper yarn manufacturing device according to claim 1, further comprising a plurality of yarn breakage detectors that detects breakage of the Japanese paper tapes or the Japanese paper yarns.
9. A Japanese paper yarn manufacturing device comprising:
- a Japanese paper roll that is obtained by winding a long Japanese paper sheet in the roll shape;
- a slitter that slits the Japanese paper sheet fed out from the Japanese paper roll into a plurality of Japanese paper tapes each having a narrow width in a feeding direction;
- a distributing section provided with a plurality of tubes each having an inner diameter that allows each of the slit Japanese paper tapes to pass through; and
- a plurality of yarn processing device units that processes the Japanese paper tapes distributed by the tubes of the distributing section into a plurality of Japanese paper yarns,
- wherein an installation position of the slitter is higher than a Japanese paper tape supply position to each of the yarn processing device units, and an inclination angle of each tube of the distributing section is at a depression angle of 20 to 60 degrees.
10. The Japanese paper yarn manufacturing device according to claim 9, wherein in the distributing section, one ends of the tubes are bundled and each of the other ends is provided in each of the yarn processing device units.
11. The Japanese paper yarn manufacturing device according to claim 9, wherein the air flow section includes a plurality of nozzles each provided at an inlet of each of the tubes toward an inside the tube and one or more pressurizing devices that send compressed air to each of the nozzles.
12. The Japanese paper yarn manufacturing device according to claim 9, wherein the air flow section includes a plurality of suction members each provided at an outlet of each of the tubes so as to suck air inside the tube and one or more decompression devices that suck air through each of the suction members.
13. The Japanese paper yarn manufacturing device according to claim 9, further comprising:
- a plurality of suction units that sucks and discharges any torn Japanese paper tapes to an outside; and
- a plurality of storage tanks that stores any torn Japanese paper tapes discharged by each of the suction units.
14. The Japanese paper yarn manufacturing device according to claim 9, wherein each of the yarn processing device units is a twisting device unit or a covering device unit.
15. The Japanese paper yarn manufacturing device according to claim 9, wherein a plurality of the yarn processing device units includes a steam generator unit that applies steam into contact with each of the Japanese paper tapes or each of the Japanese paper yarns.
16. The Japanese paper yarn manufacturing device according to claim 9, further comprising a plurality of yarn breakage detectors that detects breakage of the Japanese paper tapes or the Japanese paper yarns.
17. A Japanese paper yarn manufacturing method comprising the steps of:
- preparing a Japanese paper sheet wound in a roll;
- feeding out the Japanese paper sheet from the roll in a longitudinal direction;
- slitting the fed-out Japanese paper sheet into a plurality of Japanese paper tapes each having a narrow width in a feeding direction;
- distributing each of the plurality of the slit Japanese paper tapes through a plurality of tubes;
- transporting the plurality of the distributed Japanese paper tapes by sending air in transporting direction of each Japanese paper tape in each tube to which each Japanese paper tape is distributed; and
- processing the plurality of the transported Japanese paper tapes into a plurality of Japanese paper yarns.
18. A Japanese paper yarn manufacturing method comprising the steps of:
- preparing a Japanese paper sheet wound in a roll;
- feeding out the Japanese paper sheet in a longitudinal direction;
- slitting the fed-out Japanese paper sheet into a plurality of Japanese paper tapes each having a narrow width in a feeding direction;
- distributing each of the plurality of the slit Japanese paper tapes through a plurality of tubes;
- transporting each of the plurality of the distributed Japanese paper tapes in each tube to which each Japanese paper tape is distributed from top to bottom by inclining each tube at a depression angle of 20 to 60 degrees; and
- processing the plurality of the transported Japanese paper tapes into a plurality of Japanese paper yarns.
Type: Application
Filed: Dec 26, 2019
Publication Date: Aug 6, 2020
Applicant:
Inventor: Toru ITOI (Osaka)
Application Number: 16/727,436