JP2003201661A - Facility for regenerating loss selvedge of nonwoven fabric and method for regenerating the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve regeneration efficiency of selvedges cut off from a nonwoven fabric sheet by raking the selvedges from the width direction to open the selvedges. <P>SOLUTION: This facility for regenerating loss selvedges S is equipped with conveying machines 2 and 3 used as driving sources for continuously conveying the selvedges S cut off from the nonwoven fabric sheet to the downstream side, a distributing machine 5 for swinging the selvedges S conveyed to the downstream side by the conveying machines 2 and 3 in left and right directions crossing with the conveying direction, a stock tank 6 in which the selvedges S swung by the distributing machine 5 are piled up in a state meandering to left and right, a transfer machine 7 for feeding the selvedges S piled up in the state meandering to left and right to the downstream side in the meandering state and an opening machine 8 for opening the selvedges S in the state meandering to the left and right fed from the transfer machine 7 from the width direction. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-woven fabric ear part loss regenerating facility and a regenerating method in which an ear part cut off from a non-woven fabric sheet can be opened and reused as a regenerated fiber.

[0002]

2. Description of the Related Art As a non-woven fabric ear loss regenerating facility described above, for example, one described in Japanese Patent Laid-Open No. 9-31760 is known. This ear loss regenerating facility comprises an ear loss recovery unit and an ear loss regenerating unit. It is mainly composed of a supply unit, an ear loss opening unit, and a cotton feeding unit.

Of these, the ear loss recovery unit includes a suction section for sucking the cut-off ear section in the production line of the non-woven sheet, a cutter communicating with this suction section, and a recovery fan as a power source for sucking the ear section. The ear loss supply unit has a tower-shaped stock tank for accumulating (storing) the ears cut by the cutter, and a feed roll for discharging the ears accumulated in this stock tank downward. And a feed conveyor that conveys the ears from the feed roll to the downstream side, and a press roll that compresses the ears conveyed by the feed conveyor to a certain thickness.

Further, the ear loss opening unit is a feed roll that feeds out a fixed amount of the ears conveyed from a press roll, and an opening machine that opens the ears fed by the feed rolls into recycled cotton. The cotton-feeding unit has a cotton-feeding fan that sucks and conveys the recycled cotton from the fiber-opening machine, and a cotton-mixing machine that mixes the raw cotton with the recycled cotton fed by the cotton-feeding fan at a predetermined ratio. have.
Therefore, according to such a non-woven fabric ear loss regeneration facility, the ear portion cut off from the non-woven fabric sheet is cut into a predetermined length by a cutter and once accumulated in a stock tank, and then compressed into a predetermined thickness by a press roll. It is supplied to the fiber opening machine and scraped off by the fiber opening drum of this fiber opening machine to be recycled as recycled cotton.

[0005]

In this type of non-woven sheet, the internal fibers are aligned in the longitudinal direction, so that the ear portion cut out from the sheet has a tensile strength in the longitudinal direction. It is larger than the tensile strength in the width direction. Therefore, when opening the selvages having such properties, the widthwise direction of the selvages is opened rather than feeding the selvages so that the longitudinal direction of the selvages is along the rotation direction of the opening drum. When the fiber is supplied to the fiber opening machine along the rotation direction of the fiber drum, it is easier to scrape the fiber from the ear, and the efficiency of regenerating the ear is increased.

However, in the above-mentioned conventional ear loss reproducing equipment,
The ear part cut off from the non-woven sheet is cut into a specified length with a cutter, and the ear part with the specified length is dropped into the stock tank and then applied to the opening machine. Are piled up randomly in a stock tank and sent to an opening machine. For this reason, in the conventional ear loss regeneration equipment, the ears that come out from the bottom of the stock tank can be supplied only in a state where they are oriented in any direction with respect to the rotation direction of the opening drum via the supply conveyor. In this respect, there is a drawback in that the regeneration efficiency cannot be improved so much.

Further, when the cut ears are randomly deposited in the stock tank, the cut ears are often unevenly distributed at arbitrary positions in the stock tank.
For this reason, the ears may be concentratedly supplied to a part of the body length of the opening drum, and the ears may be scraped off only at the part of the body length. This is the reason why the regeneration efficiency of the part cannot be improved so much.

In view of such circumstances, an object of the present invention is to improve the regenerating efficiency of the ears by allowing the ears cut from the nonwoven sheet to be opened by scraping them from the width direction. . A further object of the present invention is to improve the efficiency of regenerating the ears by enabling the ears to be supplied to the fiber opening machine so that the ears are evenly distributed in the lengthwise direction of the fiber opening drum.

[0009]

In order to achieve the above object, the present invention takes the following technical means. That is, the ear loss regeneration facility of the present invention is a carrier that is a drive source for continuously carrying the ear portion cut off from the nonwoven sheet to the downstream side, and the carrier that is carried to the downstream side by the carrier. A distributor that swings the ears in a direction that intersects the transport direction, a stock tank in which the ears that are swung by the distributor are accumulated in a meandering state, and a stocker that is accumulated in the stock tank in a meandering state. And a transfer machine for sending the ears that are in a meandering state to the downstream side, and an opening machine that opens the ears in a meandering state supplied from the transfer machine in the width direction thereof. It is characterized by

According to the above-mentioned ear loss regenerating equipment, (a) the first step of continuously carrying the cut-off ears from the non-woven sheet without cutting, (b) the ears during the carrying thereof. A second step of depositing the selvages in a meandering state by swinging in a direction intersecting the transport direction, and (c) opening the meandering selvages in the width direction to obtain regenerated fibers. After the third step, the ears of the non-woven sheet are regenerated as regenerated fibers.

According to the present invention described above, the ears that are continuously conveyed without being cut are made to swing to be deposited in a meandering state, and the ears in such a meandering state from the width direction thereof. Since the fibers are opened, it is possible to scrape the ears from the direction in which the fibers are easily separated by the fiber opening drum, and it is possible to improve the efficiency of regenerating the ears.

Further, in the above invention, if the meandering width of the selvage accumulated in the meandering state is set to be substantially the same as the body length of the opening drum of the opening machine, the meandering state of the selvage portion is set. The ears can be supplied to the opening machine such that the ears are evenly distributed in the body length direction of the opening drum. Therefore, it is possible to scrape off the ears by using all the long-length parts of the opening drum evenly, and in this respect, the efficiency of regenerating the ears can be further improved.

On the other hand, in the ear loss regeneration equipment of the present invention,
It is preferable that the stock tank arranged on the downstream side of the distributor is constituted by a vertical tower-shaped hollow tower-shaped chute member which is long in the vertical direction. If a stock tank having such a structure is adopted, the ear immediately after being swung in the second step will be dropped downward and deposited, so that the ear that is continuous in the carrying direction is sorted in the stock tank. The ears can be easily deposited in a desired meandering state.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram of a nonwoven fabric ear loss regeneration facility 1 according to the first embodiment of the present invention. 2 is a side view of a portion up to the transportation fan 9 in the regenerating equipment 1, and FIG. 3A is a plan view of a portion of the regenerating equipment 1 corresponding to FIG.

As shown in each of these figures, the ear loss reproducing device 1 of the present embodiment is arranged in order from the upstream side (left side of FIG. 1).
A transporter including an ejector fan 2 and an ejector 3,
The ear feeder 4, the distributor 5, the stock tank 6, the transfer device 7, the opening device 8, the transportation fan 9 and the multi-mixer 10 are connected by air transportation pipes. The ejector fan 2 among the components of the regeneration equipment 1 is the ear portion S cut off from the nonwoven fabric sheet.
Of the ejector fan 2 is connected to the ejector 3 via the silencer 12.

The ejector 3 has an L-shaped tube 13 having a receiving portion into which the ear portion S is inserted from above and an outlet portion projecting to the downstream side, and conveying air from the fan 2 inside the L-shaped tube 13. L-type tube 13 consisting of a speed-up tube 14 for feeding
The ear portion S inserted from the receiving portion is ejected from the outlet portion of the L-shaped tube 13 together with the carrier air accelerated by the speed increasing tube 14 and is conveyed to the downstream side. The carrier air from the ejector fan 2 is exhausted to the outside from the air separator 15 formed of a mesh pipe connected to the upper end of the stock tank 6.

The ear part feeder 4 of the present embodiment supplies the ejector part 16 generated from the production line of the non-woven fabric sheet to the ejector 3 while rewinding the ear part roll 16 which is wound in a roll shape at a constant speed. A pair of mounts 17
A plurality of support rolls 18 are rotatably installed between them. The ears S from the ears roll 16 placed on the support roll 18 are rewound at a constant speed by a delivery roll (not shown) and supplied to the receiving portion of the ejector 3.

A plurality of ear rolls 16 are placed on the support roll 18 of the ear feeder 4, and one ear S rewound from each of these ear rolls 16 is one. And are supplied together to the receiving portion of the ejector 3. In the illustrated example, the two ear part feeders 4 are arranged side by side in a tandem, but the number of these can be arbitrarily changed.

The outlet portion of the ejector 3 communicates with a vertical rising pipe 19 via an elbow pipe, and the upper end of the rising pipe 19 communicates with a lateral widening pipe 20 via an elbow pipe. The downstream portion of the widening pipe 20 communicates with the vertically oriented stock tank 6 via an elbow pipe and an air separator 15. As shown in FIG. 3, the distributor 5 includes a distribution pipe 22 that is swingably housed in the laterally widening pipe 20 and a drive mechanism 23 that reciprocates the distribution pipe 22 left and right. I have it.

The distribution pipe 22 is a tapered pipe whose width gradually narrows from the upstream side to the downstream side, and the upstream end of the distribution pipe 22 is widened through a vertical rotation shaft (not shown).
The downstream end is swingable in the left-right direction by being swingably attached to the inside of No. 0. Therefore, the ears S conveyed from the rising pipe 19 are passed through the inside of the distribution pipe 22 which can be swung, and are conveyed further downstream, so that the ears S intersect the conveying direction. It is swung in the left-right direction, and is deposited in a state of meandering left and right in the stock tank 6 on the downstream side thereof (see the circle A in FIG. 1 and FIG. 3B).
In addition, the meandering width W of the selvages S (substantially the same as the swing stroke of the distribution pipe 22) accumulated in the stock tank 6 in the state of meandering left and right is substantially the same as the body length of the opening drum 30 described later. Is set to be

The stock tank 6 is composed of vertically arranged hollow tower-shaped chute members which are long in the vertical direction, and like the widening pipe 20, the lateral dimension is larger than the longitudinal dimension orthogonal thereto. It has a rectangular inner cross-section. The air separator 15 is connected to the upper end of the stock tank 6, and a pair of front and rear stock rolls 24 are provided in the lower end of the tank 6. Therefore, the ears S accumulated in the stock tank 6 in a meandering state are sequentially sent to the downstream transfer device 7 while the discharge amount is adjusted by the stock roll 24. At the upper end of the stock tank 6, a detection sensor 26 including a photoelectric tube for detecting the maximum accumulation amount of the ear S inside the stock tank 6 is provided.

The transfer device 7 is arranged in a box main body 27 which constitutes the fiber opening device 8 and receives a selvage S from the stock roll 24 and sends it to the downstream side 28.
And the press roll 2 provided on the downstream side of the conveyor 28.
9 and 9. The conveyor 28 of the transfer device 7 is arranged so that the center in the left-right direction coincides with the stock tank 6 located on the upstream side thereof and the opening drum 30 described below located on the downstream side thereof. Therefore, as shown in the circle B of FIG. 1, the ears S accumulated in the stock tank 6 in a meandering direction to the left and right are opened by the transfer machine 7 in the meandering state on the downstream side. It will be sent to 8.

The opener 8 is a box body 2 having a hollow inside.
7, a fiber-opening drum 30 rotatably housed in the box body 27 about the axis in the left-right direction, and various rolls 31 such as worker rolls and stripper rolls provided around the fiber-opening drum 30. Equipped with a transfer device 7
The ears S that are meandered in the left and right direction supplied from the ears are opened by scraping the ears S from the width direction of the ears S with the opening claws provided on the peripheral surface of the opening drum 30. To obtain recycled fiber.

The transport fan 9 is connected to the box body 27 of the opening machine 6 via a transport duct 32. The recycled fiber opened by the fiber opener 8 is sent to the multi-mixer 10 on the downstream side by the transport fan 9. This multi-mixer 10 includes a regenerated fiber storage tank 33, a virgin fiber storage tank 34, and both tanks 3
A mixing section 35 for mixing the fibers in 3, 34 at a predetermined ratio is provided, and a new nonwoven fabric sheet is manufactured by sending the fiber raw material prepared in this mixing section 35 to the production line. Has become.

Next, a method of regenerating the non-woven fabric of the present embodiment having the above-mentioned structure by a facility for regenerating ear loss and its function will be described. First, the ears S rewound from the ears roll 16 by the ears feeder 4 are continuously air-transported to the downstream side by the carrier air from the ejector 3, and rise in the rising conduit 19 to increase the width of the widening pipe. It passes through a distribution pipe 22 in the passage 20. At this time, since the distribution pipe 22 swings in the left-right direction at a predetermined cycle, the ear portion S that has passed through the distribution pipe 22 is swung in the left-right direction (see FIG. 3B) and meanders in the left-right direction. Is accumulated in the stock tank 6.

After that, the ears S accumulated in the meandering state in the stock tank 6 are sent to the fiber opening machine 8 in the meandering state by the conveyor 28 of the transfer machine 7, and the width is opened by the fiber opening drum 30 therein. Scraped in the direction and opened,
The regenerated fiber thus obtained is sent to the storage tank 33 of the multimixer 10 via the transportation fan 9. As described above, according to the ear loss reproduction facility 1 of the present embodiment, the ear portion S that is continuously conveyed without being cut is swung in the left-right direction to be accumulated in a meandering state, and meandered in such a manner. Since the ears S in the state are opened from the width direction thereof, the ears can be scraped by the opening drum 30 from the direction in which the fibers are easily separated, and the regeneration efficiency of the ears S is improved. be able to.

Further, in this embodiment, the meandering width W of the selvages S accumulated in the meandering state is set to be substantially the same as the body length of the opening drum 30. The ears S are supplied to the opening machine 8 so that the S spreads almost evenly in the body length direction of the opening drum 30. Therefore, it is possible to scrape off the ears S by using all the body length portions of the opening drum 30 evenly, and in this respect also, the reproduction efficiency of the ears S is improved.

Further, in this embodiment, since the stock tank 6 arranged on the downstream side of the distributor 5 is composed of a vertical tower-shaped hollow tower-shaped chute member, the stock pipe 6 is arranged in the left-right direction by the distribution pipe 22. Immediately after being swung to, the ears S are dropped downward and accumulated in the stock tank 6. Therefore, the ears S that are continuous in the transport direction
Is easily distributed to the left and right in the stock tank 6, and there is also an advantage that the ears S can be exactly accumulated in a desired meandering state.

The present invention is not limited to the above embodiment. For example, in the above-described embodiment, the carrier including the ejector fan 2 and the ejector 3 is adopted, but a carrier using a suction fan may be used as long as a predetermined air carrying capacity can be secured. Further, in the above-described embodiment, the batch-type ear feeding device 4 that rewinds the ear roll 16 and supplies the ear S is used. However, the suction duct provided above the cutter of the nonwoven fabric sheet production line. It is also possible to employ a continuous type ear feeder (for example, disclosed in Japanese Patent Laid-Open No. 9-31760) that sucks the ear S as it is.

FIG. 4 is a schematic diagram of a nonwoven fabric ear loss regeneration facility 1 according to the first embodiment of the present invention. The difference between the first embodiment shown in FIG. 1 and the second embodiment shown in FIG. 4 is the following two points, and the other device configurations are common to both embodiments. (1) In the former case, an off-line (batch method) ear feeder 4 that rewinds the ear path 6 that has been previously wound into a roll from the manufacturing line and supplies the ejector 3 with the ear path 6 is adopted. On the other hand, in the latter, the in-line type (continuous type) ear feeder 4 which directly feeds the ejector 3 to the ejector 3 without stocking the ear S generated in the manufacturing line is adopted. (2) In the former case, the regenerated fiber discharged from the fiber opening machine 8 is supplied to the storage tank 33 of the multimixer 10, whereas the regenerated fiber is supplied to the storage tank 33 independent of the multimixer 10. The point being.

Therefore, in the following description, the configuration relating to the above-mentioned difference will be mainly described, and the portions common to both embodiments will be denoted by the same reference numerals in the drawings, and the duplicated description will be omitted. The ear part feeder 4 of the present embodiment directs the pair of left and right suction nozzles 37 that suck up the ear part S cut in the manufacturing line and the path of the ear part S sent from the nozzles 37 to the ejector 3. And a guide tube 38 with a cutter 38A for cutting. The turning guide tube 38 of the present embodiment has a function of switching the course of the ear S to either the ejector 3 side or the discarding side.

The guide tube 38 of the present embodiment having the above-mentioned switching function receives the signal from the detection sensor 26 provided in the stock tank 6 and causes the ear portion S to move to the cutter 3.
The ear portion S, which is adapted to be switched to the discard side after being cut by 8A and passed through the guide tube 38 switched to the discard side, is cut to a predetermined length by a cutter 39 provided on the downstream side thereof. After that, the transportation fan 40 sends the bales to a baler (not shown). Further, a plurality of series of ear loss regeneration equipment 1 are connected to the storage tank 33 of the present embodiment, and the regenerated fiber once stored in the storage tank 33 is sent to the mixer by a transport fan (not shown), It is mixed with virgin fiber and sent to the production line.

The present invention is not limited to the above embodiments. For example, in each of the above-described embodiments, the carrier including the ejector fan 2 and the ejector 3 is adopted. However, as long as a predetermined air carrying capacity can be ensured, the carrier including a suction fan in the middle of the pipeline is used. It can also be used. Further, in the above-described embodiment, the ears S are swung in the left-right direction to be accumulated in a meandering state, but the direction in which the ears S are swung is not particularly limited as long as the ears S can be accumulated in a meandering state. Instead, it may be any direction that intersects the transport direction of the ears S that are continuously transported in a meandering state.

Further, in the above embodiment, the distribution pipe 22 is housed in the horizontal widening pipe 20.
Can also be arranged on the upper portion of the vertically oriented stock tank 6 in a state of being oriented vertically. The present invention can be adopted not only as a card web having fiber orientation but also as a method for regenerating an ear obtained from a non-woven fabric such as spunbond or needle punch having no orientation.

[0035]

As described above, according to the present invention,
Since the ears cut off from the nonwoven fabric sheet can be opened by scraping from the width direction, the efficiency of regenerating the ears can be improved. Further, according to the present invention, the ear can be supplied to the fiber opening machine so that the ear extends almost evenly in the body length direction of the fiber opening drum. Therefore, also in this respect, the efficiency of regenerating the ear can be improved. You can

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a non-woven fabric ear loss recycling facility according to a first embodiment of the present invention.

FIG. 2 is a side view of a portion up to a transportation fan in the regeneration facility.

FIG. 3A is a plan view of a portion up to a transportation fan in the regeneration equipment, and FIG. 3B is an operation explanatory view of a distribution pipe.

FIG. 4 is a schematic configuration diagram of a non-woven fabric ear loss regeneration facility according to a second embodiment of the present invention.

[Explanation of symbols]

1 ear loss reproduction facility 2 ejector fan 3 ejectors 4 ear feeder 5 distributors 6 stock tanks 7 Transfer machine 8 Opening machine 30 Opening drum S ear W meandering width

Claims (8)

[Claims] 1. A transporter (2, 3) serving as a drive source for continuously transporting a selvage (S) cut off from a nonwoven fabric sheet to a downstream side, and the transporter (2, 3) downstream Distributor (5) that swings the ears (S) conveyed to the side in a direction that intersects the conveying direction, and a state in which the ears (S) swung by the distributor (5) meander. A stock tank (6) deposited in step (1), and a transfer device (7) for sending the ears (S) accumulated in a meandering state in the stock tank (6) to the downstream side in the meandering state. A non-woven fabric ear loss regeneration facility comprising: a fiber opening machine (8) for opening the meandering state of the ears (S) supplied from the transfer machine (7) in the width direction thereof. 2. The meandering width (W) of the selvage (S) accumulated in the meandering state is set to be substantially the same as the body length of the opening drum (30) of the opening machine (8). The non-woven ear loss regeneration equipment according to claim 1. 3. The non-woven fabric ear loss regeneration facility according to claim 1, wherein the stock tank (6) is composed of a vertical tower-shaped hollow tower-shaped chute member which is vertically long. 4. A method for regenerating a non-woven ear loss, which comprises the following steps (a) to (c): (A) A first step (b) of continuously transporting the ears (S) cut off from the nonwoven sheet without cutting the ears (S) swinging in a direction intersecting the transportation direction during the transportation. A second step (c) of depositing the ears (S) in a meandering direction from side to side by causing the ears (S) in a meandering state to be opened in the width direction to obtain regenerated fibers 5. The meandering width (W) of the selvages (S) accumulated in the meandering state in the second step is almost the same as the body length of the opening drum (30) for opening the fibers in the third step. The method for regenerating ear loss of a non-woven fabric according to claim 4, wherein the method is set as follows. 6. The method for recycling ear loss of a nonwoven fabric according to claim 4, wherein the ear portion (S) immediately after being swung in the second step is dropped downward to be deposited. 7. A method for reclaiming non-woven ears loss, which comprises reclaiming fibers by opening the ears (S) of the non-woven fabric that are deposited in a meandering direction from side to side in the width direction. 8. An ear portion (S) of a nonwoven fabric that is deposited in a meandering direction to the left and right so as to have a meandering width (W) substantially the same as the body length of the opening drum (30). (2) A method for regenerating non-woven ear loss, characterized in that regenerated fibers are obtained by supplying the regenerated fibers to the fiber opening machine (8) so that they are distributed almost evenly in the trunk length direction.