JP3929023B2 - Non-woven ear loss regeneration equipment and regeneration method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to an ear loss recovery facility and a regeneration method for a nonwoven fabric in which an ear cut from a nonwoven fabric sheet is opened so that it can be reused as a recycled fiber.
[0002]
[Prior art]
As the above-mentioned non-woven ear loss recovery equipment, for example, one described in JP-A-9-31760 is known. This ear loss recovery equipment includes an ear loss recovery unit, an ear loss supply unit, an ear loss It consists mainly of a loss opening unit and a cotton feeding unit.
[0003]
Among these, the ear loss collection unit has a suction part that sucks the ear part cut off in the nonwoven sheet production line, a cutter that communicates with the suction part, and a recovery fan that is a power source that sucks the ear part. The ear loss supply unit includes a tower-shaped stock tank for accumulating (reserving) the ears cut by the cutter, a feed roll for discharging the ears accumulated in the stock tank downward, and this It has the supply conveyor which conveys the ear | edge part from a feed roll downstream, and the press roll which compresses the ear | edge part conveyed by this supply conveyor to fixed thickness.
[0004]
In addition, the ear loss opening unit has a feed roll that feeds the ears conveyed from the press rolls by a certain amount, and a spreader that opens the ears fed by the feed rolls to regenerate cotton. The cotton feeding unit has a cotton feeding fan that sucks and conveys the recycled cotton from the opening machine, and a blending machine that mixes the raw cotton into the recycled cotton fed by the cotton feeding fan at a predetermined ratio. ing.
Therefore, according to such a non-woven fabric ear loss recycling facility, the ears cut off from the non-woven fabric sheet are cut to a predetermined length by a cutter and once deposited in a stock tank, and then compressed to a predetermined thickness by a press roll. Then, it is supplied to a spreader, and is scraped off by a spreader drum of the spreader to be recycled as recycled cotton.
[0005]
[Problems to be solved by the invention]
In this type of nonwoven fabric sheet, the internal fibers are generally aligned in the longitudinal direction, so that the ear portion cut out from the sheet has a tensile strength in the longitudinal direction larger than that in the width direction. ing. Therefore, when opening an ear having such properties, the width direction of the ear is opened rather than being supplied to the spreader so that the longitudinal direction of the ear is along the rotation direction of the opening drum. If the fiber is supplied to the spreader along the rotation direction of the fiber drum, it becomes easier to scrape the fiber from the ear, and the regeneration efficiency of the ear is increased.
[0006]
However, in the above-mentioned conventional ear loss recycling equipment, the ear portion cut off from the non-woven sheet is cut into a predetermined length with a cutter, and the ear portion of this predetermined length is once dropped into a stock tank and then applied to a spreader. Therefore, the ears of the predetermined length are accumulated in a randomly winding state in the stock tank and sent to the fiber opening machine. For this reason, in the conventional ear loss regeneration equipment, the ear portion that has come out from below the stock tank can be supplied only in a state in which it is directed in an arbitrary direction with respect to the rotation direction of the opening drum via the supply conveyor. However, there is a drawback that the reproduction efficiency cannot be improved so much in this respect.
[0007]
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 are intensively supplied to a part of the trunk length part of the spread drum, and the ear part may be scraped only at the part of the trunk length part. This is the reason why the reproduction efficiency of the part cannot be improved much.
[0008]
In view of such a situation, an object of the present invention is to improve the regeneration efficiency of an ear by allowing the ear cut out from the nonwoven fabric sheet to be scraped from the width direction and opened.
Furthermore, an object of the present invention is to improve the regeneration efficiency of the ears by allowing the ears to be supplied to the spreader so that the ears are distributed almost evenly in the trunk length direction of the spread drum.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the present invention takes the following technical means.
That is, the ear loss regeneration facility according to the present invention is a transporter serving as a drive source for continuously transporting the ears cut off from the nonwoven fabric sheet to the downstream side, and the transported to the downstream side by the transporter. A distributor for swinging the ears in a direction crossing the conveying direction, a stock tank in which the ears swung by the distributor are meandered and deposited in a meandering state in the stock tank. A transfer device that sends the ear portion in the meandering state to the downstream side, and a spreader that opens the meandering portion supplied from the transfer device from the width direction. It is characterized by that.
[0010]
According to said ear loss reproduction | regeneration equipment, (a) The 1st process of conveying continuously, without cutting | disconnecting the ear | edge part cut off from the nonwoven fabric sheet, (b) The conveyance direction in the middle of the conveyance, and the conveyance direction A second step of depositing the ears in a meandering state by swinging in an intersecting direction; and (c) a third step of obtaining the regenerated fibers by opening the ears in a meandering state from the width direction. Through this, the ears of the nonwoven fabric sheet are regenerated as recycled fibers.
[0011]
According to the present invention, the ears that are continuously conveyed without being cut are accumulated in a meandering state by swinging, and the ears in such a meandering state are opened from the width direction. Thus, the ear part can be scraped off from the direction in which the fiber is easily peeled off by the spread drum, and the regeneration efficiency of the ear part can be improved.
[0012]
In the present invention, if the meandering width of the ears deposited in a meandering state is set to be approximately the same as the trunk length of the opening drum of the opening machine, the meandering ears are opened. The ear portion can be supplied to the fiber spreader so as to spread almost uniformly in the drum length direction of the drum. For this reason, it is possible to scrape the ears using all the body length portions of the spread drum uniformly, and in this respect, the reproduction efficiency of the ears can be further improved.
[0013]
On the other hand, in the ear loss regeneration facility of the present invention, the stock tank disposed on the downstream side of the distributor is preferably constituted by a hollow tower-like chute member that is vertically disposed and is long in the vertical direction. If a stock tank having such a structure is adopted, the ears immediately after being swung in the second step described above are dropped and accumulated, so that the ears that are continuous in the transport direction are distributed in the stock tank. The ears can be deposited exactly in the desired meandering state.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic configuration diagram of a non-woven ear loss recovery facility 1 according to a first embodiment employing the present invention. 2 is a side view of the part up to the transport fan 9 in the regeneration facility 1, and FIG. 3 (a) is a plan view of a part corresponding to FIG.
[0015]
As shown in each of these drawings, the ear loss reproduction apparatus 1 of the present embodiment includes a transport device, an ear supply device 4, and a distributor comprising an ejector fan 2 and an ejector 3 in order from the upstream side (left side in FIG. 1). 5, the stock tank 6, the transfer machine 7, the opening machine 8, the transport fan 9, and the multimixer 10 are each connected by pneumatic transport piping.
Among the components of the regeneration facility 1, the ejector fan 2 serves as a drive source for continuously transporting the ear S cut off from the nonwoven fabric sheet to the downstream side. The jet port is connected to the ejector 3 via the silencer 12.
[0016]
The ejector 3 includes an L-shaped tube 13 having a receiving portion into which the ear portion S is inserted from above and an outlet portion protruding downstream, and a speed increase for feeding the carrier air from the fan 2 into the L-shaped tube 13. The ear S formed of the tube 14 and inserted from the receiving portion of the L-shaped tube 13 is ejected from the outlet of the L-shaped tube 13 together with the carrier air accelerated by the speed-increasing tube 14 and conveyed downstream. It has become so. The carrier air from the ejector fan 2 is exhausted to the outside from an air separator 15 made of a mesh pipe connected to the upper end of the stock tank 6.
[0017]
The ear | edge part supply machine 4 of this embodiment supplies the ear | edge part S which generate | occur | produced from the manufacturing line of the nonwoven fabric sheet to the ejector 3, rewinding the ear | edge part roll 16 wound beforehand in roll shape at a fixed speed. A plurality of support rolls 18 are rotatably provided between the pair of mounts 17. The ear S from the ear roll 16 placed on the support roll 18 is rewound at a constant speed by a feed roll (not shown) and supplied to the receiving portion of the ejector 3.
[0018]
A plurality of ear rolls 16 are placed on the support roll 18 of the ear feeder 4, and the plurality of ears S rewound from each ear roll 16 are bundled together. And supplied together to the receiving part of the ejector 3. In the example shown in the figure, two ear supply units 4 are arranged in tandem, but the number of these can be arbitrarily changed.
[0019]
The exit portion of the ejector 3 communicates with the vertical rising pipe 19 through the elbow pipe, and the upper end of the rising pipe 19 communicates with the lateral widening pipe 20 through the elbow pipe. The downstream portion of the widening pipe line 20 communicates with the stock tank 6 in the vertical direction through an elbow pipe and an air separator 15. As shown in FIG. 3, the distributor 5 includes a distribution pipe 22 swingably accommodated in the laterally widened pipe 20 and a drive mechanism 23 for reciprocating the distribution pipe 22 left and right. I have.
[0020]
The distribution pipe 22 is a tapered pipe whose width gradually decreases from the upstream side toward the downstream side, and the upstream end thereof is swung into the widened pipe line 20 through a vertical rotation shaft (not shown). By attaching it so that it can move freely, its downstream side end can be swung in the left-right direction. For this reason, the ear | edge part S conveyed from the standing pipe 19 passes through the inside of the said distribution pipe 22 which can be swung freely, and is conveyed further downstream, The said ear | edge part S cross | intersects the conveyance direction. It is swung in the left-right direction, and accumulates in a state of meandering in the left-right direction in the stock tank 6 on the downstream side (see A circle in FIG. 1 and FIG. 3B).
In addition, the meandering width W (substantially the same as the swing stroke of the distribution pipe 22) of the ear part S accumulated in a state meandering from side to side in the stock tank 6 is substantially the same as the trunk length of the opening drum 30 described later. It is set to become.
[0021]
The stock tank 6 is formed of a vertically long hollow tower-like chute member arranged in the vertical direction, and like the widened pipe line 20, the lateral dimension is larger than the longitudinal dimension orthogonal thereto. It has a hollow cross section. The air separator 15 is connected to the upper end portion of the stock tank 6, and a pair of front and rear stock rolls 24 are provided in the lower end portion of the tank 6. For this reason, the ear | edge part S accumulated in the meandering state in the stock tank 6 is sent to the downstream transfer machine 7 one by one, adjusting the discharge amount by the stock roll 24. At the upper end portion of the stock tank 6, a detection sensor 26 made of a photoelectric tube for detecting the maximum amount of accumulation of the ear portion S inside is provided.
[0022]
The transfer device 7 is disposed in the box body 27 constituting the spreader 8 and is provided on the downstream side of the conveyor 28 in the horizontal direction, which receives the ear S from the stock roll 24 and sends it to the downstream side. And a press roll 29. The conveyor 28 of the transfer machine 7 is arranged so that the center in the left-right direction coincides with the stock tank 6 located on the upstream side and the opening drum 30 described later located on the downstream side. For this reason, as shown in the circle B in FIG. 1, the ears S accumulated in a meandering manner in the stock tank 6 while being meandered to the left and right are left in the meandering state by the transfer device 7 and are opened downstream. 8 to be sent.
[0023]
The opening machine 8 is provided around a box body 27 having a hollow inside, a opening drum 30 that is rotatably housed in the box body 27 around an axis in the left-right direction, and the opening drum 30. It is provided with various rolls 31 such as worker rolls and stripper rolls, and the ears S meandering from side to side supplied from the transfer device 7 are opened by the opening nails provided on the peripheral surface of the opening drum 30. By scraping from the width direction of the part S, the ear part S is opened to obtain a regenerated fiber.
[0024]
The transport fan 9 is connected to the box body 27 of the spreader 6 via a transport duct 32. The recycled fiber opened by the spreader 8 is sent to the downstream multimixer 10 by the transport fan 9. The multimixer 10 includes a regenerated fiber storage tank 33 and a virgin fiber storage tank 34, and a mixing unit 35 that mixes the fibers in the tanks 33 and 34 at a predetermined ratio. A new nonwoven fabric sheet is manufactured by sending the fiber raw material prepared in 35 to the production line.
[0025]
Next, the reproduction | regeneration method and the effect | action by the reproduction | regeneration equipment of the ear loss of the nonwoven fabric of this embodiment which has said structure are demonstrated.
First, the ear S that has been unwound from the ear roll 16 by the ear feeder 4 is continuously conveyed downstream by the conveying air from the ejector 3, and rises in the rising duct 19 to widen the pipe. It passes through the distribution pipe 22 in the path 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 is meandering left and right. To accumulate in the stock tank 6.
[0026]
Then, the ear | edge part S accumulated in the meandering state in the stock tank 6 is sent to the opening machine 8 with the meandering state by the conveyor 28 of the transfer machine 7, and is scraped in the width direction by the opening drum 30 in the inside. The reclaimed fiber obtained by being taken and opened is sent to the storage tank 33 of the multimixer 10 via the transport fan 9.
Thus, according to the ear loss reproduction facility 1 of the present embodiment, the ear part S that is continuously conveyed without being cut is swung in the left-right direction and deposited in a meandering state, and the meandering is performed in such a manner. Since the ear S in the state is opened from the width direction, the ear can be scraped off from the direction in which the fiber is easily peeled off by the opening drum 30 and the reproduction efficiency of the ear S is improved. be able to.
[0027]
In the present embodiment, the meandering width W of the ears S deposited in a meandering state is set to be substantially the same as the trunk length of the opening drum 30, so that the ears S in the meandering state are opened. The ear S is supplied to the spreader 8 so as to be distributed almost uniformly in the body length direction of the fiber drum 30. For this reason, it is possible to scrape the ear portion S by using all the body length portions of the spread drum 30 evenly, and also in this respect, the reproduction efficiency of the ear portion S is improved.
[0028]
Furthermore, in the present embodiment, the stock tank 6 disposed on the downstream side of the distributor 5 is made of a hollow tower-like chute member that is vertically disposed and is swung in the left-right direction by the distribution pipe 22. The ear S immediately after being deposited is deposited in the stock tank 6 while dropping downward. For this reason, the ear | edge part S which continues in the conveyance direction becomes easy to distribute right and left within the stock tank 6, and there exists an advantage that the ear | edge part S can be deposited exactly in a desired meandering state.
[0029]
The present invention is not limited to the above embodiment.
For example, in the above-described embodiment, a transport device including the ejector fan 2 and the ejector 3 is employed. However, a transport device using a suction fan can be used as long as a predetermined air transport capability can be ensured.
Moreover, in the said embodiment, although the batch-type ear | edge part supply machine 4 which rewinds the ear | edge part roll 16 and supplies the ear | edge part S is employ | adopted, the suction duct provided above the cutter of the nonwoven fabric sheet production line It is also possible to employ a continuous ear feeder (for example, one described in JP-A-9-31760) that sucks the ear S as it is.
[0030]
FIG. 4 is a schematic configuration diagram of the nonwoven fabric ear loss regeneration facility 1 according to the first embodiment employing 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 apparatus configuration is common to both embodiments.
(1) The former employs an off-line type (batch type) ear feeding device 4 that unwinds the ear part path 6 that has been wound in a roll shape in advance and supplies the ear part S to the ejector 3. In contrast, the latter employs an inline type (continuous type) ear supply unit 4 that directly supplies the ejector 3 without stocking the ear S generated in the production line.
(2) In the former, the regenerated fiber that has come out of the spreader 8 is supplied to the storage tank 33 of the multimixer 10, whereas the regenerated fiber is supplied to the storage tank 33 that is independent from the multimixer 10. The point that has been.
[0031]
Therefore, in the following, the configuration related to the above differences will be described with emphasis, and portions common to both embodiments will be denoted by the same reference numerals in the drawings, and redundant description will be omitted.
The ear supply device 4 of the present embodiment directs a pair of left and right suction nozzles 37 for sucking upward the ears S cut in the production line and the path of the ears S sent from the nozzles 37 to the ejector 3. And a guide tube 38 with a cutter 38A. The turning guide tube 38 of the present embodiment has a function of switching the path of the ear S to either the ejector 3 side or the disposal side.
[0032]
The guide tube 38 of the present embodiment having the above switching function receives the signal from the detection sensor 26 provided in the stock tank 6 and cuts the ear S with the cutter 38A and then switches to the disposal side. The ear S that has passed through the guide tube 38 switched to the disposal side is cut into a predetermined length by a cutter 39 provided on the downstream side thereof, and then a baler (not shown) by the transport fan 40. ).
In addition, the storage tank 33 of the present embodiment is connected to a plurality of ear loss regeneration facilities 1, 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.
[0033]
The present invention is not limited to the above embodiments.
For example, in each of the above-described embodiments, a transport device including the ejector fan 2 and the ejector 3 is adopted. However, as long as a predetermined air transport capability can be ensured, a transport device having a suction fan provided in the middle of a pipeline is used. It can also be used.
Furthermore, in the said embodiment, the ear | edge part S is swung to the state meandered by swinging in the left-right direction, However, The direction which swings the ear | edge part S has a restriction | limiting especially as long as the ear | edge part S can be deposited in a meandering state. And any direction that intersects with the conveying direction of the ear S that is continuously conveyed in a meandering state.
[0034]
Further, in the above embodiment, the distribution pipe 22 is housed in the widened pipe line 20 in the horizontal direction, but the same distribution pipe 22 is arranged in the state of being directed vertically in the upper part of the vertical stock tank 6. You can also.
In addition, this invention can also be employ | adopted as the reproduction | regeneration method of the ear | edge part obtained from nonwoven fabrics, such as not only the card web which has directionality in a fiber but such directionality, and a spun bond and a needle punch.
[0035]
【The invention's effect】
As described above, according to the present invention, the ear portion cut out from the nonwoven fabric sheet can be scraped from the width direction and opened, so that the reproduction efficiency of the ear portion can be improved. In addition, according to the present invention, since the ear portion can be supplied to the spreader so that the ear portion extends almost evenly in the trunk length direction of the spread drum, also in this respect, the reproduction efficiency of the ear portion is improved. Can do.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a non-woven fabric ear loss recovery facility according to a first embodiment employing the present invention.
FIG. 2 is a side view of a portion up to a transport fan in the regeneration facility.
FIG. 3A is a plan view of a portion up to a transport fan in the regeneration facility, 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 recycling facility according to a second embodiment employing the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Ear loss regeneration equipment 2 Ejector fan 3 Ejector 4 Ear supply machine 5 Distributor 6 Stock tank 7 Transfer machine 8 Opening machine 30 Opening drum S Ear W W Serpentine width

Claims (8)

A carrier (2, 3) serving as a drive source for continuously conveying the ears (S) cut off from the nonwoven fabric sheet to the downstream side;
A distributor (5) that swings the ears (S) being transported downstream by the transporters (2, 3) in a direction intersecting the transport direction;
A stock tank (6) in which the ears (S) swung by the distributor (5) are deposited in a meandering state;
A transfer device (7) for feeding the ears (S) accumulated in a meandering state in the stock tank (6) to the downstream side in the meandering state;
A spreader (8) for opening the ears (S) in a meandering state supplied from the transfer device (7) from the width direction;
Non-woven ear loss recycling equipment equipped with.   The meandering width (W) of the ear | edge part (S) deposited in the meandering state is set so that it may become substantially the same as the trunk | drum length of the opening drum (30) of a fiber opening machine (8). Non-woven ear loss recovery equipment.   The non-woven ear loss regeneration facility according to claim 1 or 2, wherein the stock tank (6) is constituted by a hollow tower-like chute member that is vertically disposed and is long in the vertical direction. A method for regenerating an ear loss of a nonwoven fabric, comprising the following steps (a) to (c).
(A) First step of continuously conveying the ears (S) cut off from the nonwoven fabric sheet without cutting (b) Swinging the ears (S) in a direction intersecting the conveying direction during the conveyance (C) The third step of obtaining the regenerated fiber by opening the ear portion (S) in the meandering state from the width direction.   The meandering width (W) of the ears (S) deposited in the meandering state in the second step is set to be substantially the same as the trunk length of the opening drum (30) for opening in the third step. The method for regenerating an ear loss of a nonwoven fabric according to claim 4.   The method for regenerating a loss of ears of a nonwoven fabric according to claim 4 or 5, wherein the ear part (S) immediately after being swung in the second step is dropped and deposited.   A method for regenerating a loss of ears of a nonwoven fabric, characterized in that regenerated fibers are obtained by opening the ears (S) of the nonwoven fabric deposited in a meandering manner from side to side in the width direction. The non-woven fabric ears (S) deposited in a meandering manner to the left and right so as to have a meandering width (W) substantially the same as the trunk length of the opening drum (30) almost as to spread evenly supplied to the opening machine (8) by opening the width direction thereof, the cutting waste reproducing method of the nonwoven fabric, characterized in that to obtain a regenerated fiber into.

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