JP2015126873A - Device for manufacturing absorber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for manufacturing an absorber that enables easily peeing off the scuffed compact material from a protrusion of a scuffing roll and stably manufacturing an absorber having a center-high portion of desired height.SOLUTION: A manufacturing device 1 for an absorber 3 of the present invention includes a rotational drum 2 having a concave portion 22 for accumulation on an outer circumferential surface 21 thereof, and a duct 4 for providing a compact material in a scattering manner. In a space 4S partitioned by a suspended plate 43 inside of the duct 4, there are provided a scuffing roll 42 for scuffing an excess amount of the fiber-stacked compact material, and a duct inlet 44 for taking in an outside air into a downstream side. Inside the duct 4 is partitioned by the suspended plate 43 into a fiber-stacking region PT provided on an upstream of the suspended plate 43 and a re-fiber-stacking region RPT provided on a downstream of the suspended plate 43. In the fiber-stacking region PT, the compact material is excessively fiber-stacked in a scattering manner so as to overflow from the concave portion 22 for accumulation. In the re-fiber-stacking region RPT, the excess amount of the fiber-stacked compact material is scuffed and re-fiber-stacked by the scuffing roll 42.

Description

  The present invention relates to an absorber manufacturing apparatus.

  In the case of using an absorber having a middle-high portion with an increased thickness in the center as an absorbent used for absorbent articles such as disposable diapers, sanitary napkins, incontinence pads, etc. There is. As a manufacturing method of an absorber having such a medium-high portion, for example, Patent Documents 1 and 2 use a fiber stacking apparatus including a rotating drum having a deeper concave portion for the middle and high portions in the outer peripheral surface. A method is described.

  In Patent Document 1, a fiber material is supplied in a scattered state to the outer peripheral surface of the rotating drum using a duct, and an excess portion overflowing from the concave portion for collecting the rotating drum is scraped off with a scuffing roll disposed on the downstream side. A fiber stacking apparatus is described in which the scraped fiber material is supplied again to the upstream side of the duct via a conveyance path different from the duct. According to the fiber stacking apparatus described in Patent Document 1, an excess portion of the overflowing fiber material can be reused, so that the fiber can be efficiently stacked.

  Further, in Patent Document 2, fibers other than the fiber material supplied at the upstream side of the stacking drum with the fiber material supplied by the first duct and stacked by the scuffing roll into the middle-high section recess in the stacking recess. A two-stage product that scrapes the material and feeds the fiber material onto the fiber material stacked in the middle-high portion concave portion by the second duct at the position downstream of the pile drum, and causes the fiber to accumulate in the accumulation concave portion. A fiber device is described.

JP 2010-35701 A Special table 2006-500155 gazette

  However, Patent Document 1 does not describe anything regarding the point that the fiber material scraped off by the scuffing roll can be easily peeled off from the protrusion of the scuffing roll. Moreover, in the rotating drum of the fiber stacking apparatus described in Patent Document 1, the scraped fiber material is simply supplied again to the upstream side of the duct via a conveyance path different from the duct. For this reason, the suction force of the rotating drum decreases as the pulp accumulation thickness increases, and the outer surface of the piled portion corresponding to the middle-high portion concave portion in the stacking concave portion is not the middle-high portion concave portion. In some cases, it is difficult to produce an absorbent body having a desired basis weight with a medium to high portion.

  Also, Patent Document 2 does not describe anything regarding the point at which the fiber material scraped off by the scuffing roll is easily peeled off from the protrusion of the scuffing roll. Further, in the fiber stacking apparatus described in Patent Document 2, since the fiber material is first stacked in the mid-high portion recess, the fiber material is stacked in the stacking recess other than the mid-high portion recess. As the thickness increases, the suction force of the rotating drum decreases. Therefore, similarly to the fiber stacking device described in Patent Document 1, the outer surface of the fiber stack portion corresponding to the concave portions for the middle and high portions in the concave portion for accumulation is in a depressed state, and the absorption provided with the middle and high portions having a desired basis weight. It was difficult to manufacture the body.

  Therefore, this invention is providing the manufacturing apparatus of the absorber which can eliminate the fault which the prior art mentioned above has.

  The present invention has a rotating drum having a concave portion for accumulation on the outer peripheral surface, and a duct for supplying a compact material in a scattered state toward the outer peripheral surface of the rotating drum, and by suction from the inside of the rotating drum. An absorbent body manufacturing apparatus for forming an absorbent body by stacking the molded body material in the stacking recess by the generated air flow, wherein the stacking recess includes a first region and a first region. The surface of the molded body in a space partitioned by a hanging plate that hangs down from the top surface of the duct on the downstream side in the rotation direction of the rotating drum. A scuffing roll that is disposed so as to contact the material and scrapes off the excessive amount of the molded body material that has been accumulated, and is disposed downstream of the scuffing roll in the rotational direction of the rotating drum to take in outside air. Daku And the inside of the duct is on the upstream side of the rotating drum in the rotational direction of the rotary drum, and excessively piles the molded material in a scattered state so as to overflow from the accumulation recess. The forming material material obtained by scraping and scraping off the excess amount of the formed body material that has been piled up with the scuffing roll, on the downstream side in the rotation direction of the rotating drum from the hanging plate An absorbent body manufacturing apparatus that is divided by the drooping plate into a restacked fiber region that restacks the fibers in the accumulation recess.

  ADVANTAGE OF THE INVENTION According to this invention, the molded object material scraped off with the scuffing roll is easy to peel from the processus | protrusion of a scuffing roll, and the absorber provided with the mid-high part of desired height can be manufactured stably.

FIG. 1 is a schematic perspective view showing an embodiment (this embodiment) of an absorbent body manufacturing apparatus according to the present invention. FIG. 2 is a diagram in which the outer peripheral portion (recess for accumulation) of the rotating drum in the manufacturing apparatus shown in FIG. FIG. 3 is an exploded perspective view of the outer peripheral portion of the rotary drum shown in FIG. 4 is a cross-sectional view schematically showing a cross section taken along line IV-IV in FIG. FIG. 5 is a cross-sectional view schematically showing a part of FIG. 6 is a cross-sectional view schematically showing a cross section taken along line VI-VI in FIG. FIG. 7 is a cross-sectional view schematically showing a part of FIG. FIG. 8 is a perspective view showing the piled product released from the accumulation recess of the rotating drum in the manufacturing apparatus shown in FIG. 1.

Hereinafter, the present invention will be described based on preferred embodiments with reference to the drawings.
FIG. 1 shows an outline of a fiber stacking apparatus which is a preferred embodiment of the absorbent body manufacturing apparatus of the present invention. The fiber stacking apparatus 1 according to the present embodiment includes a rotating drum 2 having a stacking recess 22 on an outer peripheral surface 21 and a duct 4 that supplies a compact material to the outer peripheral surface 21 of the rotating drum 2 in a scattered state. Then, the absorbent body 3 is manufactured by forming the absorbent body 3 by stacking the molded body material into the accumulation recess 22 by the air flow generated by the suction from the inside of the rotary drum 2. The accumulation recess 22 has a first region and a second region deeper than the first region. In the fiber stacking apparatus 1 of the present embodiment, the second region of the stacking recess 22 is a middle-high recess 23 that is deeper than the stacking recess 22 disposed in the central region of the stacking recess 22 as shown in FIG. It is formed with. The first region of the accumulation recess 22 is formed by the accumulation recess 22 excluding the middle-high recess 23 in the central region. That is, the fiber stacking apparatus 1 according to the present embodiment includes the rotating drum 2 having the accumulation recess 22 on the outer peripheral surface 21 and the middle / high recess 23 deeper than the accumulation recess 22 in the central region of the accumulation recess 22. , And a duct 4 that supplies the molded body material in a scattered state toward the outer peripheral surface 21 of the rotary drum 2. More specifically, the fiber stacking device 1 is disposed below the rotary drum 2 that is rotationally driven in the direction of the arrow R <b> 2, the duct 4 that supplies a molding material to the outer peripheral surface 21 of the rotary drum 2, and the diagonally lower side of the rotary drum 2. , A transfer roll 5 that is rotationally driven in the direction of the arrow R5, a vacuum conveyor 6 disposed below the transfer roll 5, and a cutting device 7. In the fiber stacking apparatus 1, a vacuum box 11 is further provided between the duct 4 and the transfer roll 5 in the circumferential direction of the rotary drum 2, and a mesh belt 13 is provided between the vacuum box 11 and the rotary drum 2. The windbreak plate 15 is provided close to the outer peripheral surface of the transfer roll 5 so as to pass between the transfer roll 5 and the rotary drum 2. In addition, from the viewpoint of stably transferring the piled material in the accumulation recess 22 without losing its shape, the pile device 1 of the present embodiment is provided with the vacuum box 11 and the wind shield plate 15. It does not have to be. As shown in FIG. 1, the rotation direction of the rotary drum 2 is a rotation direction in an arrow R2 direction that is opposite to the conveyance direction of a core wrap sheet 37 described later, and the rotation direction of the transfer roll 5 is the core direction. The rotation direction is the arrow R5 direction which is the forward direction with respect to the conveyance direction of the wrap sheet 37.

  As shown in FIG. 1, the rotating drum 2 has a cylindrical shape, and a portion that forms the outer peripheral surface 21 of the rotating drum 2 rotates around a horizontal axis by receiving power from a motor such as a motor. As shown in FIG. 2, the rotary drum 2 has an accumulation recess 22 in which a molded body material is stacked on the outer peripheral surface 21, and further, the width direction (2Y direction) of the rotation drum 2 in the accumulation recess 22. ), And has a middle-high recess 23 deeper than the stacking recess 22. A plurality of stacking recesses 22 including the middle-high recesses 23 are formed at predetermined intervals in the circumferential direction (2X direction) of the rotary drum 2. In FIG. 2, the 2X direction is the circumferential direction of the rotating drum 2, and the 2Y direction is the width direction of the rotating drum 2 (a direction parallel to the rotation axis of the rotating drum 2).

  As shown in FIG. 3, in the fiber stacking apparatus 1 of the present embodiment, the rotary drum 2 is overlapped with a cylindrical drum body (not shown) made of a metal rigid body and an outer peripheral portion of the drum body. The fixed suction adjusting plate 24, the medium / high porous plate 25 (porous member) fixed to be overlapped on the outer surface 24a side of the suction adjusting plate 24, and the outer surface 25a side of the medium / high porous plate 25 are overlapped. A fixed space plate 26, a porous plate 27 (porous member) fixed to be overlapped on the outer surface 26a side of the space plate 26, and a concave portion fixed to be overlapped on the outer surface 27a side of the porous plate 27 It has a partition plate 28 and a ring plate 29 which is fixed in an overlapping manner on the outer surface 28 a side of the recessed partition plate 28. The rotating drum 2 is formed by fixing the drum body and the plates 24 to 29 to each other by a known fixing means such as a bolt or an adhesive. Here, as shown in FIG. 2 and FIG. 3, the bottom surface 23 a of the middle-high recess 23, which is the fiber surface on which the molded body material is deposited, is composed of a medium-high porous plate 25 (porous member) having a number of suction holes. Has been. More specifically, the bottom surface 22a of the concave portion 22 for accumulation, which is a fiber surface to be stacked with the molded body material, is composed of a porous plate 27 except for the concave portion 23 for middle and high portions. .

  In the present specification, the outer surface of each component of the rotary drum 2 (the suction adjustment plate 24, the medium / high porous plate 25, the space plate 26, the porous plate 27, the recessed section plate 28, the ring plate 29, etc.) The surface of the component member is directed to the supply side of the molded body material when the molded body material is stacked. In addition, the inner surface of each constituent member is a surface directed to the side opposite to the supply side of the molding material (the inner side of the rotating drum) when the molding material is stacked in the constituent member. . When the molded object manufactured with the fiber accumulation apparatus 1 is an absorber used for absorbent articles, such as a disposable diaper and a sanitary napkin, a molded object material is an absorber raw material.

  The molded body material includes a fiber material. As the molded body material as the absorbent material, various materials conventionally used for absorbent articles of absorbent articles such as sanitary napkins, panty liners, and disposable diapers can be used without particular limitation. For example, pulp fibers such as defibrated pulp, short fibers of cellulosic fibers such as rayon fibers and cotton fibers, and short fibers of synthetic fibers such as polyethylene are used. These fiber materials can be used alone or in combination of two or more. In addition, the molded body material as the absorbent material may use a water-absorbing polymer together with the fiber material. Further, as the fibrous raw material, a fibrous water-absorbing polymer can be used alone or together with the fibrous material. Furthermore, a deodorant, an antibacterial agent, etc. can also be used with a fiber material etc. as needed.

  The ring plate 29 is a member whose outer surface 29 a is located on the outermost side of the rotary drum 2 and forms a part of the outer peripheral surface 21, and is also a member that forms the outer peripheral surface of the accumulation recess 22. Here, the “outer peripheral surface of the accumulation concave portion 22” means that the accumulation concave portion 22 is viewed from the outside in the normal direction of the outer peripheral surface of the rotary drum 2 (direction perpendicular to the rotation axis direction of the rotary drum 2). It means the outer surface along the outline of the concave portion 22 for accumulation. Hereinafter, in the present specification, viewing the object such as the accumulation recess 22 from the outside in the normal direction of the outer peripheral surface of the rotary drum 2 is referred to as a plan view of the object such as the accumulation recess 22. In the fiber stacking apparatus 1 of the present embodiment, the stacking recess 22 has a rectangular outline that is long in the transport direction when the stacking recess 22 is viewed in plan view. The ring plates 29 are arranged on both sides of the rotary drum 2 and are formed to extend with the same width over the entire circumference of the rotary drum 2. Each ring plate 29 is formed to have a constant thickness.

  In the ring plate 29 formed as described above, the width between the pair of ring plates 29 and 29 determines the width of the accumulation recess 22, and the thickness of the ring plate 29 determines the depth of the accumulation recess 22. One of the factors to be determined. The pair of ring plates 29 and 29 are non-breathable so as not to allow air to pass except for a portion between them. Here, “non-breathable” includes both the meanings of “non-breathable that does not allow air to pass through” and “non-breathable that allows a very small amount of air to pass but does not substantially pass air”. It means non-breathable. As the ring plate 29, for example, a plate or mold in which an opening (a space corresponding to the three-dimensional shape in the recess 22) is formed by machining a metal or resin plate such as stainless steel or aluminum or the like. It is possible to use a plate in which the opening is integrally formed, a punched or etched plate, or a laminate of these plates.

  The concave partition plate 28 includes a plurality of cross-shaped openings 281 penetrating in the thickness direction in plan view, a cross-shaped opening defining member 282 that partitions each cross-shaped opening 281, and the thickness direction. And a plurality of openings 283 penetrating through the openings 283 and an opening defining part 284 that partitions each opening 283. A plurality of cross-shaped openings 281 are intermittently arranged in the circumferential direction (2X direction). More specifically, the opening defining member 282 has a width direction (2Y) from both side edges in a portion extending in a strip shape in the transport direction at regular intervals in a plan view and a substantially central portion in the transport direction of the portion extending in the transport direction. Direction) shaped like a cross having an outwardly convex part. More specifically, the front and rear ends in the conveyance direction in the portion extending in the conveyance direction constituting the cross-shaped opening defining member 282 are formed in an arc shape that is curved outwardly. In addition, the pair of width-direction (2Y direction) convex portions that form the cross-shaped opening defining member 282 are trapezoidal in which the interval gradually decreases outward in the width direction (2Y direction). Is formed. The opening 281 is located in the cross-shaped opening defining member 282 and is formed in a cross shape having the same contour as the opening defining member 282. The opening defining portion 284 includes a plurality of MD defining members 285 extending in parallel to the transport direction in a region excluding the plurality of cross-shaped openings 281 (cross-shaped opening defining members 282) in plan view. And a plurality of CD defining members 286 extending parallel to the width direction (2Y direction) (extending in the direction perpendicular to the transport direction). The opening defining portion 284 is formed in a lattice shape by intersecting a plurality of MD defining members 285 and a plurality of CD defining members 286, and each opening portion 283 has an opening in the lattice shape. It is located in the part of the grid | lattice in the partial definition part 284, and is formed in the shape which has the same outline as each opening part definition part 284. FIG.

  The cross-shaped opening defining member 282 and the opening defining portion 284 having the MD defining member 285 and the CD defining member 286 have a non-breathable property that prevents air from passing therethrough. The “non-breathable” here is as described above. As a material for forming the non-breathable opening defining members 282 and 284, metals such as stainless steel, aluminum, and iron, resins, or a combination thereof can be used. The plurality of cross-shaped openings 281 and the plurality of openings 283 included in the recess partition plate 28 are arranged in a region sandwiched between a pair of ring plates 29 and 29 that are fixed over the outer surface 28a of the recess partition plate 28. Has been. The cross-shaped opening defining member 282 and the lattice-shaped opening defining member 284 constituting the concave partition plate 28 are formed to have a constant thickness. Similar to the thickness of the ring plate 29, the thickness of the concave section plate 28 is also one of the factors that determine the depth of the concave section 22 for accumulation.

  The porous plate 27 has a plurality of cross-shaped openings 271 in plan view. The cross-shaped opening 271 of the porous plate 27 is disposed at the same position as each cross-shaped opening 281 of the recessed section partition plate 28 fixed to be overlapped with the outer surface 27 a of the porous plate 27. The plurality of cross-shaped openings 271 of the porous plate 27 and the plurality of cross-shaped openings 281 of the recessed partition plate 28 correspond one-to-one, and the shapes in plan view are similar to each other. . In the fiber stacking apparatus 1 of the present embodiment, the cross-shaped opening 271 of the porous plate 27 has a similarity ratio of 1 to the cross-shaped opening 281 of the corresponding concave partition plate 28, and the opening 271 and the opening 271 are open. The portion 281 has a congruent relationship in shape in plan view.

  The porous plate 27 is a member that forms the bottom surface 22a of the accumulation concave portion 22 excluding the middle / high concave portion 23. The porous plate 27 transmits an air flow (vacuum air) generated by suction from the inner side of the fiber stacking apparatus 1 (inward of the rotating drum 2) to the duct 4 covering the rotating drum 2, and the air flow is transmitted to the air flow. It is a breathable plate that holds the molded body material carried on board without allowing it to permeate and allows only air to permeate. In the porous plate 27, a plurality of (multiple) suction holes (pores) penetrating the plate 27 in the thickness direction are formed in a region excluding the plurality of cross-shaped openings 271; While the accumulation recess 22 passes through the space maintained at a negative pressure in the rotary drum 2, the suction hole functions as an air flow permeation hole. As the porous plate 27, for example, a metal or resin mesh plate, or a metal or resin plate formed with a plurality of (many) pores by etching or punching can be used.

  The space plate 26 includes, in plan view, an annular defining member 261 formed along the outline of each cross-shaped opening 271 of the porous plate 27 fixed to be overlapped with the outer surface 26a of the space plate 26, and a conveyance A plurality of MD defining members 262 extending in parallel with the direction and a plurality of CD defining members 263 extending in parallel with the width direction (2Y direction) (extending in the direction perpendicular to the transport direction) are provided. The MD defining member 262 and the CD defining member 263 not only intersect with each other but also intersect with the annular defining member 261 to form a lattice shape. In the region surrounded by the annular defining member 261, the space plate 26 is positioned at the grid portion where the MD defining member 262 and the CD defining member 263 intersect, and is formed in a plurality of annular shapes penetrating in the thickness direction. An inner opening 264 is provided. In addition, in the region excluding the annular defining member 261, the space plate 26 is located at the grid portion where the MD defining member 262 and the CD defining member 263 intersect, and has a plurality of openings penetrating in the thickness direction. Part 265.

  As described above, the annular defining member 261 of the space plate 26 is formed along the outline of each cross-shaped opening 271 of the porous plate 27 fixed to be overlapped with the outer surface 26a of the space plate 26. The plurality of annular defining members 261 of the space plate 26 and the outlines of the plurality of cross-shaped openings 271 of the porous plate 27 have a one-to-one correspondence, and the shapes in plan view are similar to each other. In the fiber stacking apparatus 1 of the present embodiment, the plurality of annular defining members 261 of the space plate 26 has a similarity ratio of 1 to the contour of the cross-shaped opening 271 of the corresponding porous plate 27. Therefore, the annular defining member 261 includes not only the outline of the opening 271 of the porous plate 27 but also the cross-shaped opening 281 of the recessed partition plate 28 that has a congruent relationship with the opening 271 of the porous plate 27. The shape of the opening defining member 282 to be defined also has a congruent relationship in shape in plan view. In addition, although it is preferable that it is mutually agree | coinciding that it is mutually congruent, it is the meaning also including the case where a magnitude | size differs a little.

  The plurality of openings 265 of the space plate 26 correspond one-to-one with the plurality of openings 283 of the concave partition plate 28 fixed on the outer surface 2a of the space plate 26 via the porous plate 27. The planar view shapes are similar to each other. In the fiber stacking apparatus 1 of the present embodiment, the opening portion 265 of the space plate 26 has a similarity ratio of 1 to the opening portion 283 of the corresponding recessed section partition plate 28, and the opening portion 265 and the opening portion 283 are viewed in plan view. The shapes are congruent with each other. The annular defining member 261, the MD defining member 262, and the CD defining member 263 constituting the space plate 26 are formed with a constant thickness. The thickness of the space plate 26 is one of the factors that determine the depth of the middle-high recess 23 in the central region of the accumulation recess 22.

  The annular defining member 261, the MD defining member 262, and the CD defining member 263 of the space plate 26 have a non-breathability that prevents air from passing therethrough. The “non-breathable” here is as described above. As a forming material of the non-breathable annular defining member 261, the MD defining member 262, and the CD defining member 263, it is possible to use a metal such as stainless steel, aluminum, iron, or a resin, or a combination thereof. it can.

  A plurality of the medium-high porous plates 25 are arranged in a plan view and are formed in a cross shape. Each cross-shaped medium / high porous plate 25 is disposed at the same position as each annular defining member 261 of the space plate 26 fixed to be overlapped on the outer surface 25 a of the medium / high porous plate 25. The outlines of the plurality of cross-shaped medium-high porous plates 25 and the plurality of annular defining members 261 of the space plate 26 have a one-to-one correspondence, and the shapes in plan view are similar to each other. In the fiber stacking apparatus 1 according to the present embodiment, the cross-shaped medium-to-high porous plate 25 has a similarity ratio of 1 to the annular defining member 261 of the corresponding space plate 26. For this reason, the cross-shaped medium-to-high porous plate 25 has not only the same outline as the annular defining member 261 but also the entire shape of the opening 271 of the porous plate 27 and the concave partition plate 28. These cross-shaped openings 281 also have a congruent relationship in plan view.

  The medium / high porous plate 25 is a member that forms the bottom surface 23 a of the medium / high recess 23. Like the porous plate 27, the medium / high porous plate 25 covers the rotary drum 2 with an air flow (vacuum air) generated by suction from the inside of the fiber stacking device 1 (inward of the rotary drum 2). It is a breathable plate that transmits the air inside the duct 4 and carries the molded body material carried on the air flow without transmitting it, and allows only air to pass through. A plurality of (multiple) suction holes (pores) that penetrate through the plate 25 in the thickness direction are formed in the middle / high porous plate 25 in a uniform distribution. While passing through the space maintained at a negative pressure in the rotary drum 2, the suction hole functions as an air flow permeation hole. As the medium / high porous plate 25, for example, a metal or resin mesh plate, or a metal or resin plate formed with a plurality of (many) pores by etching or punching can be used.

  The suction adjustment plate 24 includes, in plan view, an annular defining member 241 formed along the contour of the cross-shaped medium-to-high porous plate 25 that is overlapped and fixed to the outer surface 24a of the suction adjustment plate 24, and the conveyance direction. And a plurality of CD defining members 243 extending in parallel to the width direction (2Y direction) (extending in a direction perpendicular to the conveying direction). The MD defining member 242 and the CD defining member 243 not only intersect with each other but also intersect with the annular defining member 241 to form a lattice shape. In the region surrounded by the annular defining member 241, the suction adjusting plate 24 is positioned at the grid portion where the MD defining member 242 and the CD defining member 243 intersect, and a plurality of suction adjusting plates 24 penetrates in the thickness direction. An annular inner opening 244 is provided. The plurality of annular inner openings 244 of the suction adjustment plate 24 is different from the plurality of annular inner openings 264 of the space plate 26 fixed on the outer surface 24a of the suction adjustment plate 24 via the medium / high porous plate 25. They correspond to each other, and the shapes in plan view are similar to each other. In the fiber stacking device 1 of the present embodiment, the annular inner opening 244 of the suction adjustment plate 24 has a similarity ratio of 1 to the corresponding annular inner opening 264 of the space plate 26, and the annular inner opening 244 and the annular inner opening 244 are similar to each other. The opening 264 has a congruent relationship in shape in plan view.

  In the region excluding the annular defining member 241, the suction adjusting plate 24 is located at the grid portion where the MD defining member 242 and the CD defining member 243 intersect and has a plurality of openings that penetrate in the thickness direction. H.245. The plurality of openings 245 of the suction adjustment plate 24 have a one-to-one correspondence with the plurality of openings 265 of the space plate 26 fixed on the outer surface 24a of the suction adjustment plate 24 via the medium / high porous plate 25. The planar view shapes are similar to each other. In the fiber stacking apparatus 1 of the present embodiment, the opening ratio 245 of the suction adjustment plate 24 has a similarity ratio with respect to the opening section 265 of the corresponding space plate 26 smaller than 1, and the relative ratio is 0.05 or more and 0.5 or less. It is preferable that That is, the opening area of the opening 245 of the suction adjustment plate 24 is narrower than the opening area of the opening 265 of the space plate 26. The ratio (S2 / S1) of the opening area (S2) to the opening area (S1) of the opening 265 of the space plate 26 is preferably 50% or more and 5% or less (5% or more). 50% or less), more preferably 15% or more and 7% or less (7% or more and 15% or less).

  The annular defining member 241, the MD defining member 242, and the CD defining member 243 constituting the suction adjusting plate 24 are formed to have a constant thickness. The annular defining member 241, the MD defining member 242, and the CD defining member 243 of the suction adjustment plate 24 have a non-breathability that prevents air from passing therethrough. The “non-breathable” here is as described above. As a forming material of the non-breathable annular defining member 241, the MD defining member 242, and the CD defining member 243, a metal such as stainless steel, aluminum, iron or the like, a resin, or a combination thereof may be used. it can.

  The rotary drum 2 includes a suction adjusting plate 24 configured as described above, a plurality of medium / high porous plates 25, a space plate 26, a porous plate 27, a recessed section plate 28, and a pair of ring plates 29. Are fixed to each other. As shown in FIG. 2, the rotary drum 2 provided in the fiber stack device 1 of the present embodiment configured as described above has an adjustment body 20 that adjusts the suction force on the inner surface side of the porous member of the accumulation recess 22. Is disposed on the inner surface of the porous member. The adjusting body 20 has a plurality of openings penetrating the adjusting body 20 in the thickness direction, and a part of the opening is relative to the opening relatively far from the porous member of the accumulation recess 20. The opening area is smaller than the closest opening. The adjusting member 20 for adjusting the suction force is not disposed on the inner surface side of the porous member of the middle-high recess 23, and the suction holes (pores) of the porous member have an opening area on the outer surface side and an inner surface side. The opening area is the same. Specifically, the opening area of the opening disposed on the outer surface side of the porous member of the middle-high recess 23 and the opening area of the opening disposed on the inner surface side of the porous member are the same. This will be specifically described below.

  As shown in FIG. 2, the middle-high concave portion 23 formed on the outer surface 21 of the rotary drum 2 has a contour in the form of an annular defining member 241 of the suction adjustment plate 24, and the middle-high concave portion 23. The contour of the porous plate 25, the annular defining member 261 of the space plate 26, the contour of the opening 271 of the porous plate 27, and the position of the opening defining member 282 of the recessed partition plate 28 coincide to form a cross shape. Is formed. Further, the middle / high recess 23 for the accumulation 22 has a bottom surface 23a formed of a medium / high porous plate 25 (porous member), and a region in the middle / high recess 23 is seen in a plan view as shown in FIG. Thus, the positions and shapes of the plurality of annular inner openings 244 of the suction adjustment plate 24 sandwiching the medium-to-high porous plate 25 and the plurality of annular inner openings 264 of the space plate 26 are the same. As described above, only the suction adjusting plate 24 is disposed on the inner side of the rotary drum 2 than the medium-high porous plate 25 (porous member) constituting the bottom surface 23a of the medium-high recess 23, and the medium-high porous The opening area of the annular inner opening 264 of the space plate 26 disposed on the outer surface side of the porous plate 25 and the opening area of the annular inner opening 244 of the suction adjustment plate 24 disposed on the inner surface side of the medium / high porosity plate 25 Are the same. Therefore, the adjusting body 20 for adjusting the suction force is not disposed on the inner surface side of the middle / high porous plate 25 in the middle / high recess 23 in the accumulation recess 22. Further, as shown in FIG. 4, the depth of the middle / high recess 23 for the stacking recess 22 is such that the thickness of the space plate 26 disposed on the medium / high porous plate 25, the thickness of the recess partition plate 28, and The ring plate 29 is formed with a thickness.

  The stacking recess 22 formed on the outer surface 21 of the rotary drum 2 is formed in a band shape with its outline sandwiched between a pair of rectangular ring plates 29 and 29 as seen in plan view as shown in FIG. ing. In addition, the bottom 22a of the region excluding the middle / high recess 23 is formed of a porous plate 27 (porous member), and in the region excluding the middle / high recess 23, as shown in FIG. Thus, the positions and shapes of the plurality of openings 283 of the concave section partition plate 28 and the plurality of openings 265 of the space plate 26 match, and the positions of the openings 283 and 265 are closer to the center than their opening areas. An opening 245 of the narrow suction adjustment plate 24 is also arranged. That is, the opening area of the opening 245 of the suction adjustment plate 24 is narrower than the opening area of each of the opening 283 of the recessed partition plate 28 and the opening 265 of the space plate 26. Thus, the space plate 26 and the suction adjustment plate 24 are located inward of the rotary drum 2 rather than the porous plate 27 (porous member) that constitutes the bottom surface 22a of the region excluding the middle-high concave portion 23. The opening area 245 of the suction adjustment plate 24 that is relatively far from the porous plate 27 (porous member) is compared with the opening 265 of the space plate 26 that is relatively close to the opening area 265. Therefore, the adjusting body 20 for adjusting the suction force is arranged on the inner surface side of the porous plate 27 (porous member) in the accumulation recess 22. Further, as shown in FIG. 4, the stacking recesses 22 (excluding the mid-high recesses 23) have the depths of the thickness of the recess partition plate 28 disposed on the porous plate 27 and the thickness of the ring plate 29. Will be formed.

  When the adjusting body 20 having a small opening area is disposed on the inner surface side of the porous plate 27 (porous member) in the accumulation recess 22, the medium / high porosity plate 25 for the medium / high recess 23. Compared to the case where the adjustment body 20 having a large opening area is disposed as on the inner surface side of the (porous member), the air flow for sucking the molded body material through the porous member by suction from the inside of the apparatus (Vacuum air) is suppressed. That is, as shown in FIG. 5, the air flow (indicated by an arrow in FIG. 5) flowing from the outside of the rotating drum 2 to the inside through the porous plate 27 is caused by the adjusting body 20 at the bottom of the recess 22. In the disposed region, the components pass through the rotary drum 2 in the order of the porous plate 27, the opening 265 of the space plate 26, and the opening 245 of the suction adjustment plate 24. At that time, the air flow is located leeward of the air flow, and the opening 245 of the suction adjusting plate 24 that substantially functions as a suction portion for the molded body material is more upwind of the air flow than the opening 245. Since the opening area is smaller than the opening 265 of the space plate 26 positioned, the air permeability through the porous plate 27 is hindered, and the air volume of the air flow can be suppressed.

  Note that, in the fiber stacking process in which the molded body material supplied on the air flow is sucked into the accumulation recesses 22 and stacked, the basis weight of the molded body material depends on the airflow flowing through the porous member. Therefore, by arranging the adjusting body 20 in a region corresponding to a portion on the inner surface side of the porous member corresponding to a portion where the basis weight of the formed material to be stacked is smaller than that of the other portion, the basis weight of the desired portion can be obtained. A compact with a reduced amount can be produced with simple equipment. That is, since the adjustment body 20 is arranged on the inner surface side in the region excluding the middle and high recesses 23 for the stacking recesses 22, it becomes a low basis weight pile fiber region. Since the adjustment body 20 is not arranged on the side, it becomes a high basis weight pile fiber region.

  The fiber stacking apparatus 1 according to the present embodiment will be further described. As shown in FIG. 1, the rotary drum 2 has a plurality of partitioned spaces in its interior (portion on the rotating shaft side). There is a suction force adjusting means for adjusting the force. Specifically, the rotating drum 2 is formed so that the inner side (rotating shaft side) portion does not rotate from the portion forming the outer peripheral surface 21, and a disc shape is formed at both ends in the width direction of the rotating drum 2. The fixed plates 291 and 291 and a cylindrical central shaft portion 292 connecting the fixed plates 291 and 291 are provided. The fixing plates 291 and 291 and the central shaft portion 292 are made of a metal rigid body and are integrally formed. Inside the rotating drum 2, a plurality of metal plates 293 are arranged between the fixed plates 291, 291 from the outer peripheral surface of the central shaft portion 292 toward the outer peripheral surface 21, In the apparatus 1, four pieces are arranged. Each plate 293 extends from the outer peripheral surface of the central shaft portion 292 to the outer peripheral edge of each fixed plate 291. Spaces A, B, C, and D that are partitioned by four plates 293 and separated from each other by plates 293 adjacent to each other in the circumferential direction (2X direction) of the rotating drum 2 inside the rotating drum 2. Is formed. An intake fan (not shown) is connected to the central shaft portion 292, and the pressure in the independent spaces A to D can be adjusted by driving the intake fan. In the fiber stacking device 1, the space A and the space B are maintained at a negative pressure.

  As shown in FIGS. 1 and 6, the space A and the space B are located in a region where the outer peripheral surface 21 is covered with the duct 4. The plate 293 that partitions the space A and the space B extends toward the vicinity of the tip of the hanging plate 43 that hangs down from the top surface of the duct 4 to be described later. The negative pressure in the space B is set to a negative pressure that is the same or weaker than the negative pressure in the space A, and is set to a negative pressure that is weaker than the negative pressure in the space A in the fiber stacking apparatus 1. FIG. 6 shows a state in which the fixed plate 291 is removed for the explanation of the space A and the space B inside the rotary drum 2.

  The remaining spaces C and D of the rotary drum 2 are set to atmospheric pressure (no pressure). External air flows into the space C by suction from the vacuum box 11 side, which will be described later, and external air flows into the space D by suction from the transfer roll 5 side. The space C is separated from the space D, which is a region after the transfer, in order to satisfactorily perform transfer on the space C (transfer of the piled material in the accumulation recess 22 to the transfer roll 5 and the like). The rotary drum 2 is blown (air flow) from the inside of the rotary drum 2 toward the porous plate 27 in a space (space C) corresponding to the transfer position of the piled material in the accumulation recess 22 to the transfer roll 5. ) Generating means may be included. In that case, by actively blowing from the space C toward the vacuum box 11 using the generating means, it is possible to promote the release of the piled articles from the accumulation concave portion 22.

  The space C is normally set to a negative pressure or zero pressure (atmospheric pressure) that is weaker than the space B. From the viewpoint of transportability of the piled product, the space C is set to a weak negative pressure until the piled product in the stacking recess 22 is transferred to the transfer recess 5 until the piled product is transferred to the transfer roll 5. However, if there is no particular problem in transportability, the space C is preferably zero pressure in consideration of transferability. Moreover, since the space D is a region through which the accumulation concave portion 22 passes after the piled material in the accumulation concave portion 22 is transferred onto the transfer roll 5, zero pressure or positive pressure is preferable.

  As shown in FIG. 1, one end of the duct 4 is located on the space A and the space B of the rotating drum 2 and covers the outer peripheral surface 21 of the rotating drum 2 over the entire area of the space A and the space B. The other end side (not shown) has a molding material introduction device (not shown). The molded body material introducing device includes, for example, a pulverizer that pulverizes sheet-like wood pulp into defibrated pulp and feeds the defibrated pulp (fiber material) into the duct 4. A water-absorbing polymer introduction part for introducing water-absorbing polymer particles in the middle of the duct 4 can also be provided.

  The individual recesses 22 for accumulation of the rotary drum 2 pass through the porous plate 27 and the medium / high porous plate 25 constituting the bottom surfaces 22a and 23a described above while passing over the space A maintained at a negative pressure. Then suction from the suction part is performed. By suction from the pores of the porous material in each accumulation recess 22, an air flow is generated in the duct 4 to convey the raw material of the absorber to the outer peripheral surface of the rotary drum 2, and the air is carried on the air flow. The raw material is deposited in each accumulation recess 22.

  In the fiber stacking apparatus 1 of the present embodiment, as shown in FIG. 1, in the inside of the duct 4 corresponding to the space A on the upstream side in the rotation direction (R2 direction) of the rotary drum 2 from the hanging plate 43 described later, A pair of partition plates 41 and 41 are provided on both sides along the circumferential direction (2X direction) of the rotating drum 2. Further, in the inside of the duct 4, an excessive amount of formed fibers is stacked at a position separated from the partition plates 41, 41 arranged along the both side portions along the downstream side in the rotation direction (R2 direction) of the rotary drum 2. A scuffing roll 42 for scraping body material is provided.

  The pair of partition plates 41, 41 extend along both side portions along the circumferential direction (2X direction) of the rotary drum 2. More specifically, the pair of partition plates 41, 41 are arranged inside the duct 4 between the rotary drum 2 and a molding material introducing device (not shown) on the other end side of the duct 4, and It is arranged on a pair of ring plates 29, 29 that form the outer peripheral surface 21, and extends in the circumferential direction (2X direction) along the ring plate 29. Further, in the drum width direction (2Y direction), each partition plate 41 is arranged on the rotary drum 2 across the ring plate 29 from each side wall 40 constituting the duct 4 in a cross-sectional view as shown in FIG. The stacking concave portion 22 extends to a position covering the side portion along the circumferential direction (2X direction). More specifically, each partition plate 41 extends from each side wall 40 constituting the duct 4 over the ring plate 29 to the circumferential direction (2X in the middle-high recess 23 in the central region of the stacking recess 22 disposed in the rotary drum 2. Extending to the vicinity of the side edge along the direction). The pair of partition plates 41, 41 may be plate-like ones extending in parallel to the drum width direction (2Y direction) as long as they extend to such a position. It is preferable that it has a surface inclined so that a space | interval may become narrow gradually toward the rotating drum 2 from the molded object material introduction apparatus (not shown) side of the other end side. If the pair of partition plates 41, 41 has such an inclined surface, it becomes difficult for the molded body material to accumulate on the partition plate 41.

  As shown in FIG. 1 and FIG. 4, each partition plate 41 has a substantially right-angled triangular cross section or an upper base at the lower base, as shown in FIGS. 1 and 4. Compared to the trapezoidal trapezoidal shape, the trapezoidal cross section is extremely narrow. The pair of square pyramid shaped partition plates 41, 41 have mutually facing surfaces facing each other from the molding material introducing device (not shown) side on the other end side of the duct 4 toward the rotary drum 2. The distance between the end portions 41a, 41a on the rotary drum 2 side of the pair of partition plates 41, 41 is equal to the width of the middle-high recess 23 in the central region of the accumulation recess 22. I'm doing it. As a forming material of such a partition plate 41, a metal, a synthetic resin, or a material combining them can be used.

  1 and 6, the fiber stacking apparatus 1 according to the present embodiment is partitioned by a hanging plate 43 that hangs down from the top surface of the duct 4 on the downstream side in the rotational direction 2X of the rotating drum 2 inside the duct 4. A scuffing roll 42 is disposed in the space 4S so that the surface contacts the molded material deposited in the accumulation recess 22 and scrapes off the excessive molded material that has been stacked, and the scuffing roll 42 And a duct opening 44 that is disposed downstream of the rotary drum 2 in the rotational direction 2X and takes in outside air. Specifically, the duct 4 includes a hanging plate 43 that hangs from the top surface of the duct 4 toward the vicinity of the outer end of the plate 293 that partitions the space A and the space B inside the duct 4. . The hanging plate 43 is formed in a convex arc shape from the top surface of the duct 4 toward the upstream side in the circumferential direction (2X direction) of the rotating drum 2 over the entire width of the duct 4. The tip of the hanging plate 43 hangs down to a position where it does not touch the top of an excessive amount of molded material that has been piled up so as to overflow. By arranging such a hanging plate 43, a space 4 </ b> S partitioned by the hanging plate 43 is formed inside the duct 4. When such a hanging plate 43 is arranged, the piled area (the area where the defibrated molded material is piled on the surface of the rotating drum 2) and the restacked area (the scuffing 42 are scraped off). The region in which the formed body material is restacked) is divided, and it is difficult to inhibit the forming material in the stacked region. Scuffing rolls 42 are arranged in the space 4S thus partitioned.

  As shown in FIGS. 1 and 6, the scuffing roll 42 is arranged on the downstream side of the space B of the rotary drum 2 in the space 4 </ b> S inside the duct 4 and on the outer peripheral surface 21 of the rotary drum 2. The material is arranged so as to come into contact with the molded body material. The scuffing roll 42 has a cylindrical roll main body 421 and a large number of scraping protrusions 422 erected on the outer peripheral surface of the roll main body 421. In the drum width direction (2Y direction), the scuffing roll 42 has a roll main body 421 disposed on the rotary drum 2 between a pair of ring plates 29, 29, and a large number of protrusions 422 at least in the accumulation recesses. 22 is preferably disposed in a region on the middle-high recess 23 in the central region, and is preferably disposed in a region between the pair of ring plates 29 and 29, and is disposed over the entire width of the rotary drum 2. It is particularly preferred that In the fiber stacking apparatus 1 of the present embodiment, the roll main body 421 and a large number of protrusions 422 are arranged on the rotating drum 2 between the ring plates 29 and 29. The scuffing roll 42 scrapes off an excessive amount of the molded body material that is piled up so as to overflow in the accumulation recess 22 by the protrusions 422. As a material for forming the protrusions 422, a metal such as stainless steel, aluminum, or iron, or a synthetic resin is used. In the fiber stacking apparatus 1 of this embodiment, a synthetic resin brush is used. The height of the protrusion 422 can be appropriately set according to the amount of the molded material to be scraped, but in the fiber stacking apparatus 1 of the present embodiment, the outer surface of the ring plate 29 that forms the outermost surface of the rotating drum 2. The height is set up to 29a. Specifically, the height of the protrusion 422 is preferably about 1 mm to 10 mm from the peripheral surface of the roll body 421 of the scuffing roll 42.

  The scuffing roll 42 rotates around the horizontal axis in response to power from a motor such as a motor. In the fiber stacking apparatus 1 of the present embodiment, the scuffing roll 42 is rotationally driven in the direction of the arrow R3, and rotates so that the surface facing the rotating drum 2 moves in the direction opposite to the rotating direction of the rotating drum 2. doing. That is, in the fiber stacking apparatus 1 of this embodiment, the rotation directions of the scuffing roll 42 and the rotary drum 2 are the same. The peripheral speed of the scuffing roll 42 is 2 in comparison with the peripheral speed of the rotary drum 2 from the viewpoint of the balance between the amount of scraping of the molded body material and restacking of the scraped molded body material in the near field. It is preferably from 10 times to 10 times, more preferably from 3 times to 5 times. That is, when the peripheral speed of the scuffing roll 42 is higher than the peripheral speed of the rotary drum 2 in this way, an excessive amount of the molding material is stacked so that the protrusions 422 of the scuffing roll 42 overflow in the accumulation recess 22. The excessive number of molding materials in the accumulation recesses 22 excluding the middle and high recesses 23 can be scraped evenly. The peripheral speed of the scuffing roll 42 means the peripheral speed on the surface of the roll body 421, and the peripheral speed of the rotating drum 2 means the peripheral speed on the surface of the ring plate 29 that forms the outer peripheral surface 21 of the rotating drum 2. To do.

  As described above, as shown in FIGS. 1 and 6, the duct 4 is provided with a duct opening 44 for taking in outside air downstream of the scuffing roll 42 in the rotational direction 2X of the rotating drum 2. In the fiber stacking apparatus 1 of the embodiment, the duct opening 44 is formed at the outlet located in the downstream side 2X in the rotational direction 2X of the rotary drum 2 in the duct 4. That is, the outlet of the duct 4 is opened to form the duct opening 44. Further, the duct opening 44 has an outside air amount adjusting means for adjusting the opening area to adjust the amount of outside air to be taken in. In the fiber stacking apparatus 1 of the embodiment, a closing plate 441 for closing the lower rotary drum 2 side is disposed in the duct opening 44 at the outlet of the duct 4. The closing plate 441 is arranged over the entire width of the duct opening 44 of the duct 4, that is, between both side walls 40, 40 constituting the duct 4, and rotates from the top surface side of the duct 4 of the duct opening 44. It is formed so as to be movable toward the drum 2, and by moving it, the position of the duct opening 44 can be adjusted, and the amount of outside air taken into the gap between the top surface of the duct 4 and the scuffing roll can be adjusted. ing. In addition, by changing the size of the closing plate 441, the opening area of the duct opening 44 can be adjusted to adjust the amount of outside air.

  More specifically, the individual concave portions 22 for accumulation of the rotary drum 2 constitute the aforementioned bottom surfaces 22a and 23a while passing over the space B that is located in the space 4S of the duct 4 and maintained at a negative pressure. Suction from the suction part is performed through the porous plate 27 and the medium / high porous plate 25. Therefore, outside air is taken into the space 4 </ b> S of the duct 4 from the duct opening 44. And the opening area of the duct opening 44 is adjusted by the closing plate 441, and the amount of the outside air taken in the duct opening 44 is adjusted.

  As shown in FIG. 6, in a state where the compacted molding material is piled in the accumulation recess 22, the molding material scraped off by the scuffing roll 42 is easily peeled off from the protrusion 422 of the scuffing roll 42. The flow velocity (V1) of the outside air taken in from the duct opening 44 flowing between the scuffing roll 42 and the top surface of the duct 4 was taken in from the duct opening 44 flowing between the scuffing roll 42 and the rotating drum 2. It is preferably faster than the outside air flow rate (V2). The ratio (V1 / V2) of the flow rate (V1) of the outside air to the flow rate (V2) of the outside air is preferably 1 or more and 4 or less, and 1.5 or more and 3 times or less from the viewpoint of further achieving the above effect. More preferably it is. Specifically, the flow velocity (V1) of the outside air between the scuffing roll 42 and the top surface of the duct 4 is preferably 5 m / s or more and 100 m / s or less, and preferably 10 m / s or more and 70 m / s or less. More preferably. The flow rate (V2) of the outside air between the scuffing roll 42 and the rotary drum 2 is preferably 0.1 m / s or more and 70 m / s or less, and more preferably 0.1 m / s or more and 50 m / s or less. preferable. The flow rate of outside air can be measured by an anemometer such as Anemo Master. From the viewpoint of achieving such a flow rate, the duct opening 44 opened at the outlet of the duct 4 is preferably provided at a position on the top surface side of the duct 4 with respect to the height of the duct 4. . More preferably, the duct opening 44 is preferably provided above the rotating drum 2 with respect to the rotating shaft of the scuffing roll 42.

  In the fiber stacking device 1 of the present embodiment having the rotating drum 2 and the duct 4 configured as described above, the inside of the duct 4 is upstream of the hanging plate 43 in the rotational direction 2X of the rotating drum 4, An accumulation amount PT in which the molded material in a scattered state is excessively accumulated so as to overflow from the accumulation concave portion 22, and an excess amount that is accumulated on the downstream side of the hanging plate 43 in the rotational direction 2X of the rotary drum 4. The shaped body material is scraped off by a scuffing roll 42 and is divided by a hanging plate 43 into a restacking region RPT in which the scraped shaped body material is restacked in the accumulation recess 22. The fiber stacking apparatus 1 according to the present embodiment has an excessive fiber stacking so that the molded material in the scattered state overflows from the accumulation recess 22 in the duct 4 on the upstream side 2X in the rotational direction of the rotary drum 4 with respect to the hanging plate 43. In this device, an excessive amount of the molded body material that has been spun and scraped is scraped off by a scuffing roll 42, and the molded body material scraped in the partitioned space 4S is restacked into the accumulation recess 22. Furthermore, the fiber stacking apparatus 1 of the present embodiment causes the molded material in a scattered state to overflow in a corresponding region between the pair of partition plates 41 and 41 in the accumulation recess 22 by the pair of partition plates 41 and 41. The excessively formed compact material is scraped off by a scuffing roll 42, and the compact material scraped off in the partitioned space 4S is excessively stacked in the accumulation recess 22. It is a device that re-fibers the fiber on both sides of the fiber part. The transfer roll 5, the vacuum conveyor 6, the cutting device 7 and the like that the fiber stacking device 1 has in addition to the rotating drum 2 and the duct 4 will be described below.

  The transfer roll 5 has a cylindrical outer peripheral portion having air permeability, and the outer peripheral portion rotates around a horizontal axis upon receiving power from a prime mover such as a motor. In the non-rotating portion on the inner side (rotating shaft side) of the transfer roll 5, a space E in which the inside can be decompressed is formed. A known exhaust device (not shown) such as an intake fan is connected to the space E, and the interior of the space E can be maintained at a negative pressure by operating the exhaust device.

  On the outer peripheral surface of the transfer roll 5, a plurality of (many) suction holes are formed to communicate the inside and outside. While these suction holes pass over the space E maintained at a negative pressure, air is sucked into the interior from the outside, and the piled material in the accumulation recess 22 is caused to rotate by the suction force of the rotary drum 2. Smooth transition from above to the transfer roll 5.

  The vacuum conveyor 6 includes an endless breathable belt 63 laid across the drive roll 61 and the driven rolls 62 and 62, and a vacuum for the conveyor 6 disposed at a position facing the transfer roll 5 with the breathable belt 63 interposed therebetween. And a box 64.

  The vacuum box 11 on the mesh belt 13 side has a box-like shape having upper and lower surfaces, left and right side surfaces, and a rear surface, and has an opening that opens toward the rotating drum 2. The vacuum box 11 is connected to a known exhaust device (not shown) such as an intake fan via an exhaust pipe (not shown), and the inside of the vacuum box 11 can be maintained at a negative pressure by the operation of the exhaust device. It is.

  The mesh belt 13 is a belt-like breathable belt having a mesh connected endlessly, and is continuously guided along a plurality of free rolls 14 and transfer rolls 5 to move along a predetermined path. The mesh belt 13 is driven by the rotation of the transfer roll 5. As shown in FIG. 1, the mesh belt 13 is introduced onto the outer peripheral surface of the rotating drum 2 in the vicinity of the end of the duct 4 on the side where the scuffing rolls 42 are disposed, and then the vacuum box 11 and the rotating drum 2. And between the transfer roll 5 and the rotary drum 2 are sequentially passed. While the mesh belt 13 passes in front of the opening of the vacuum box 11, the mesh belt 13 is in contact with the outer peripheral surface of the rotating drum 2, and the rotating drum is in the vicinity of the closest portion between the transfer roll 5 and the rotating drum 2. 2 moves away from the outer peripheral surface of 2 and onto the transfer roll 5. The mesh belt 13 has small pores as compared to the suction holes of the transfer roll 5, and suction from the pores of the mesh belt 13 that overlaps with the suction holes with suction from the suction holes of the transfer roll 5. Done.

  A pair of windbreak plates 15 are provided on both sides of the area where the suction holes are formed in the width direction of the outer peripheral surface of the transfer roll 5 to prevent or reduce the inflow of wind from the side, This prevents the piled article released from the accumulation recess 22 from being deformed. The material of the windbreak plate 15 is not particularly limited, but is preferably made of metal or synthetic resin and has a thickness of about 0.5 to 10 mm from the viewpoint of giving rigidity that can resist wind.

  As the cutting device 7, for example, in the manufacture of absorbent articles such as sanitary napkins and diapers, those conventionally used for cutting the absorbent continuous body can be used without particular limitation. The cutting device 7 shown in FIG. 1 includes a cutter roll 72 having a cutting blade 71 on the peripheral surface and an anvil roll 73 having a smooth peripheral surface for receiving the cutting blade.

Next, a method for continuously producing an absorbent body using the fiber stacking apparatus 1 described above will be described.
In the manufacturing method of the absorbent body using the fiber stacking apparatus 1, the concave portion 22 for accumulation is provided on the outer peripheral surface 21, and the second region deeper than the concave portion 22 for accumulation which is the first region in the central region of the concave portion 22 for accumulation. The rotary drum 2 having a certain middle-high recess 23 is supplied with a forming material material in a scattered state, and the forming material is stacked in the accumulation recess 22.

  Prior to performing the fiber stacking process, first, the exhaust devices connected to the spaces A and B in the rotary drum 2, the space E in the transfer roll 5, and the vacuum box 11 are operated to generate negative pressure. To. By creating a negative pressure in the space A, an air flow (vacuum air) is generated in the duct 4 to convey the absorbent material to the outer peripheral surface 21 of the rotary drum 2. Further, the rotary drum 2 and the transfer roll 5 are rotated, and the vacuum conveyor 6 is operated.

  Then, when the molded body material introducing device (not shown) is operated to supply the molded body material as the absorbent material into the duct 4, the molded body material rides on the air flow flowing in the duct 4 and is scattered. In a state, it is supplied toward the outer peripheral surface 21 of the rotary drum 2 and stacked in the accumulation recess 22 (stacking step).

  In the stacking process, the pair of partition plates 41 and 41 are used to excessively stack the molded material in a scattered state so as to overflow into a corresponding region between the pair of partition plates 41 and 41 in the accumulation recess 22. To do. Specifically, as shown in FIGS. 1, 4, and 6, a pair of partition plates 41 and 41 are provided inside the duct 4 on both sides along the circumferential direction (2X direction) of the rotary drum 2. Therefore, the molded material in a scattered state is accumulated in a corresponding region between the pair of partition plates 41 in the accumulation recess 22. In the fiber stacking apparatus 1 of the present embodiment, the adjusting body 20 having a large opening area is disposed on the inner surface of the medium / high porous plate 25 disposed in the center region of the accumulation recess 22. And the adjustment body 20 with small opening area is distribute | arranged to the inner surface of the porous plate 27 distribute | arranged to the area | region of the recessed part 22 for accumulation | collection except the porous plate 25 for middle / high. Therefore, the air flow that sucks the molded body material through the medium / high porous plate 25 is not suppressed, and the air flow that sucks the molded body material through the porous plate 27 is suppressed. Therefore, in the manufacturing method of the absorbent body using the fiber stacking apparatus 1, the molded body material in a scattered state is further concentrated on the region where the middle-high recess 23 between the pair of partition plates 41, 41 is located. be able to.

  Furthermore, in the fiber stacking apparatus 1 of the present embodiment, the pair of partition plates 41, 41 are arranged such that the opposing surfaces of the pair of partition plates 41, 41 are directed to the rotating drum 2 from the molding material introduction device (not shown) side on the other end side of the duct 4. The interval between the end portions 41a, 41a on the rotating drum 2 side of the pair of partition plates 41, 41 is such that the interval between the pair of partition plates 41, 41 is a middle-high recess in the central region of the accumulation recess 22. This corresponds to the width of 23. Therefore, in the fiber stacking process of the manufacturing method of the absorbent body using the fiber stacking apparatus 1, the forming is performed in a more concentrated state on the region where the middle / high recess 23 between the pair of partition plates 41, 41 is located. Body material can be accumulated. Here, if the distance between the end portions 41a, 41a of the pair of partition plates 41, 41 is set in accordance with the width of the middle / high recess 23 (the width of the middle / high portion of the absorbent body 3 to be formed), the absorption having a high basis weight ratio. The body can be processed. For example, when processing the absorber shown in FIG. 8 to be described later, the width of the thin portion in the width direction of the thick portion (medium / high portion) 33 and the end portions 41a and 41a of the partition plate are matched to each other. It becomes possible to process the absorber 3 having a high quantitative ratio.

  In the region where the middle / high recess 23 is located, the middle / high recess 23 is intermittently arranged in the circumferential direction (2X direction) of the rotary drum 2. It is deeper than the concave portion 22 for accumulation except the concave portion 23 for use. Therefore, as shown in FIG. 6, in the region corresponding to the space between the pair of partition plates 41, 41, in the circumferential direction (2X direction) of the rotary drum 2, the middle / high recess 23 is disposed. The height of the molded body material stacked in the corresponding region is lower than the height of the molded body material stacked in the region corresponding to the portion excluding the middle-high recess 23.

  Next, after the fiber stacking step, the excessively stacked molding material is scraped off, and the scraped molding material is restacked on both sides of the excessively stacked portion of the accumulation recess 22 ( Restacking process). More specifically, the inside of the duct 4 provided in the fiber stacking apparatus 1 of the present embodiment includes a fiber stacking region PT that causes the pair of partition plates 41 and 41 to excessively stack the compacted material in the accumulation recess 22. In addition, the scraped molded body material is divided by a hanging plate 43 into a restacking region RPT for restacking the accumulated compact material into the accumulation recess 22. And in the space 4S which is the restacking fiber region RPT partitioned by the hanging plate 43 inside the duct 4, as shown in FIG. 1 and FIG. A scuffing roll 42 for scraping off an excessive amount of the molding material is provided. Therefore, in the restacking process, as shown in FIG. 7, an excessively stacked forming material is scraped off using a scuffing roll 42. As described above, in the method of manufacturing the absorbent body using the fiber stacking device 1, in the region corresponding to the space between the pair of partition plates 41, 41, in the circumferential direction (2X direction) of the rotary drum 2, The height of the molding material stacked in the region corresponding to the portion where the recess 23 is disposed is lower than the height of the molding material stacked in the region corresponding to the portion excluding the middle-high recess 23. Therefore, in the region corresponding to the space between the pair of partition plates 41, 41, the height of the stacked molded material is relatively high, and the region corresponding to the portion excluding the middle-high recess 23 is excessively stacked. The formed molding material is scraped off using the scuffing roll 42. In other words, in the region corresponding to the space between the pair of partition plates 41, 41, the stacked material material is relatively low in height, and the region corresponding to the portion corresponding to the portion in which the middle-high recess 23 is disposed. The molded body material thus made is difficult to be scraped off by the scuffing roll 42.

  In the space 4S of the duct 4, the scraped molded body material is returned to the upstream side in the vicinity of the drooping plate 43 by the drooping plate 43 and is restacked in the accumulation recess 22. In the fiber stacking apparatus 1 of the present embodiment, a duct opening 44 for taking in outside air is provided inside the duct 4 on the downstream side in the rotational direction 2X of the rotary drum 2 with respect to the scuffing roll 42. Accordingly, when outside air is taken in through the duct opening 44, the molded body material scraped off by the scuffing roll 42 is easily peeled off from the protrusions 422 of the scuffing roll 42, as shown in FIG. 7. In particular, in the fiber stacking apparatus 1 of the present embodiment, the duct opening 44 is provided with a closing plate 441 that is an outside air amount adjusting means, and the opening area of the duct opening 44 is adjusted by the closing plate 441. The outside air flow rate (V1) between the scuffing roll 42 and the top surface of the duct 4 can be adjusted faster than the outside air flow rate (V2) between the scuffing roll 42 and the rotating drum 2. By adjusting in this way, the molded body material scraped off by the scuffing roll 42 can be more easily peeled off from the protrusion 422 of the scuffing roll 42.

  In the accumulation recess 22 on the upstream side in the vicinity of the hanging plate 43 in the space 4 </ b> S of the duct 4, an excessive amount of the molding material is not yet scraped off by the scuffing roll 42. For this reason, the amount of the formed material is less on the both sides along the circumferential direction (2X direction) of the rotating drum 2 of the excessively stacked portion than the excessively stacked portion. The suction force is hardly hindered by the formed molded material. Therefore, the scraped molded material is more likely to be restacked on both sides of the excessively stacked portion in the accumulation recess 22 than in the excessively stacked portion in the accumulation recess 22. Thus, in the fiber stacking apparatus 1 according to the present embodiment, the molded body material scraped off by the scuffing roll 42 can be restacked on the both side portions of the adjacent concave portion 22 for accumulation, so The flow of the wind carrying the molded body material is difficult to change, and it is easy to manufacture an absorbent body having a desired basis weight. Further, in the fiber stacking apparatus 1 of the present embodiment, as shown in FIG. 7, the hanging plate 43 has an arcuate R shape from the top surface of the duct 4 toward the rotation direction (R2 direction) of the rotary drum 2. Since it is formed, the scraped molded body material is guided to the hanging plate 43 to facilitate restacking.

  Next, in the manufacturing method of the absorbent body using the fiber stacking apparatus 1, the height of the molded body material stacked in the accumulation recess 22 after the restacking fiber process is again set in the space 4S of the duct 4. The height is adjusted to a certain height by the scuffing roll 42 (height adjustment step). In the fiber stacking apparatus 1 of the present embodiment, the roll body 421 and the numerous protrusions 422 of the scuffing roll 42 are arranged over the entire width of the rotating drum 2, and the height of the protrusions 422 is the maximum of the rotating drum 2. The height is set up to the outer surface 29a of the ring plate 29 forming the outer surface. Therefore, in the manufacturing method of the absorbent body using the fiber stacking apparatus 1, the molded body material stacked in the accumulation recess 22 is adjusted to the height of the outer surface 29 a of the ring plate 29 by the scuffing roll 42.

  As described above, as shown in FIG. 1, after forming the material 32 in the stacking recess 22 to obtain the piled material 32, the rotating drum 2 is further rotated. When the pile 32 in the accumulation recess 22 comes to a position opposite to the vacuum box 11, it is sucked to the mesh belt 13 by suction from the vacuum box 11, and in this state, the transfer roll 5 And the rotating drum 2 are conveyed to the closest part or the vicinity thereof. Then, the pile 32 in the state of being sucked onto the mesh belt 13 is released from the accumulation recess 22 by suction from the transfer roll 5 side, and transferred onto the transfer roll 5 together with the mesh belt 13.

  FIG. 8 shows the pile 32 immediately after releasing from the accumulation recess 22 of the present embodiment. As shown in FIG. 8, in the pile 32, a portion corresponding to the middle / high recess 23 having a deep depth in the central region of the accumulation recess 22 excludes the thick portion 33 and the middle / high recess 23 having a high height. A portion corresponding to the concave portion 22 for accumulation is a thin portion 34 having a low height. Specifically, the thick portion 33 is formed with the height of the space plate 26 disposed on the medium-to-high porous plate 25, the thickness of the concave partition plate 28, and the thickness of the ring plate 29. Yes. Further, the thin portion 34 is formed by the thickness of the concave section plate 28 and the thickness of the ring plate 29 arranged on the porous plate 27.

  More specifically, the thick portion 33 includes the MD defining member 262 and the CD image which intersect with each other in a lattice shape in a region surrounded by the annular defining member 261 of the space plate 26 disposed on the medium / high porous plate 25. It is divided by the component member 263 and has a divided thick portion 331. In addition, the thin portion 34 includes an MD defining member 285 and a CD defining member that intersect in a lattice pattern at the opening defining portion 284 excluding the cross-shaped opening 281 of the recessed partition plate 28 disposed on the porous plate 27. It is divided by a member 286 and has a divided thin portion 341.

  In the fiber stacking apparatus 1 according to the present embodiment, the adjusting body 20 is not disposed on the inner surface of the medium / high porous plate 25 disposed in the central region of the accumulation recess 22, and The adjusting body 20 is disposed on the inner surface of the porous plate 27 disposed in the region of the accumulation recesses 22 excluding the medium / high porous plate 25. Therefore, the thick portion 33 of the piled product 32 obtained by the absorbent body manufacturing method using the pile device 1 is a high basis weight portion with a relatively large amount of piled absorbent material, The thin portion 34 is a low basis weight portion that has a relatively small amount of absorbent material. Further, the entire bottom surface of the piled article 32 is substantially flat by the scuffing roll 42.

  The piled product 32 transferred onto the transfer roll 5 is conveyed while receiving suction from the transfer roll 5 side, and is introduced onto a vacuum conveyor 6 disposed below the transfer roll 5. It is delivered onto a core wrap sheet 37 made of a conductive nonwoven fabric or the like. Thereafter, as shown in FIG. 1, both side portions along the conveying direction of the core wrap sheet 37 are folded back, and the upper and lower surfaces of the piled article 32 are covered with the core wrap sheet 37. And the fiber pile 32 of the state coat | covered with the core wrap sheet | seat 37 is cut | disconnected by the cutter roll 72 of the cutting device 7 in the intermediate position between adjacent thick parts 33 and 33 with the core wrap sheet | seat 37. FIG. Is done. Thus, the absorbent body 3 covered with the core wrap sheet 37 is obtained.

  The absorbent body 3 obtained by the manufacturing method of the absorbent body using the fiber stacking apparatus 1 includes the thick portion 33 and the thin portion 34, and is an absorbent body partially different in height of the molded body material that is the raw material of the absorbent body. . Due to the action of the pair of partition plates 41 and 41 arranged in the duct 4 and the scuffing roll 42, the absorbent body 3 does not show uneven fiber accumulation, and the absorbent body 3 includes a disposable diaper, a sanitary napkin, It has a high quality suitable as an absorbent for use in absorbent articles such as incontinence pads. Thus, according to the manufacturing method using the fiber stacking apparatus 1 of this embodiment, an absorber provided with the middle-high part of desired height can be manufactured stably. Further, due to the action of the adjusting body 20 described above, the thick portion 33 has a relatively high basis weight, and the thin portion 34 has a relatively low basis weight. Thus, according to the manufacturing method using the fiber stacking apparatus 1 of this embodiment, an absorber provided with the middle-high part of desired basic weight can be manufactured stably.

The present invention is not limited to the fiber stacking apparatus 1 of the above embodiment and can be changed as appropriate.
For example, in the fiber stacking apparatus 1 of the present embodiment described above, the circumferential direction (2X direction) of the rotating drum 2 is inside the duct 4 upstream of the hanging plate 43 in the rotating direction (R2 direction) of the rotating drum 2. Although a pair of partition plates 41 and 41 are provided on both sides along the line, they may not be provided. Even if the pair of partition plates 41, 41 are not provided, the height of the molded body material stacked in the region corresponding to the portion where the middle-high recess 23 is arranged in the circumferential direction (2X direction) of the rotary drum 2. However, it is lower than the height of the molding material piled in the area | region corresponding to the part except the recessed part 23 for medium heights. Such an excessively piled molding material in a region corresponding to a portion excluding the middle-high recess 23 is relatively high in the space 4S of the duct 4. Scrape off using a scuffing roll 42. As described above, the molding material scraped off by the scuffing roll 42 is easily peeled off from the protrusion 422 of the scuffing roll 42 by the outside air taken in through the duct opening 44, and is scraped in the partitioned space 4S. The molded body material taken can be easily re-fabricated in the concave portion 22 for accumulation, and an absorbent body having a desired mid-high portion can be stably manufactured.

  Moreover, in the fiber stacking apparatus 1 of this embodiment mentioned above, the adjustment body 20 which adjusts a suction force is arrange | positioned in the inner surface side of the rotating drum 2 of the porous plate 27 (porous member) in the accumulation recessed part 22. FIG. However, the adjusting body 20 that adjusts the suction force may not be disposed in any region. The piled product 32 manufactured using such a rotating drum 2 is an unevenly piled product having a thick portion 33 having a high height and a thin portion 34 having a low height. The thick portion in the unevenly distributed fiber is a high basis weight portion having a relatively high basis weight, and the thin portion is a low basis weight portion having a relatively low basis weight.

  Further, the shape of the fiber pile 32 to be manufactured is not limited to the above-described shape, and the suction adjustment plate 24, the medium / high porous plate 25, the space plate 26, the porous plate 27, the concave partition plate 28, and a pair of ring plates 29. The arrangement and shape of the accumulation recesses 22 and the arrangement and shape of the middle / high recesses 23 may be flexibly changed by exchanging them. Further, the middle / high recess 23 forming the second region having a depth deeper than the first region in the middle / high recess 23 may be arranged in a region other than the central region of the accumulation recess 22.

  Further, as shown in FIG. 3, the rotary drum 2 uses a plate composed of a suction adjustment plate 24, a medium / high porous plate 25, a space plate 26, a porous plate 27, a recessed section plate 28, and a pair of ring plates 29. However, instead of the plate, for example, an integral plate in which a portion where the high basis weight portion is desired is deeply recessed may be used. In addition, by providing a plate composed of the suction adjustment plate 24, the medium / high porous plate 25, the space plate 26, the porous plate 27, the recess partitioning plate 28, and the pair of ring plates 29, an absorber having a high basis weight ratio. Can be manufactured with high accuracy.

  The absorbent body produced in the present invention is preferably used as an absorbent body for absorbent articles. The absorbent article is mainly used to absorb and retain body fluids excreted from the body such as urine and menstrual blood. Absorbent articles include, for example, disposable diapers, sanitary napkins, incontinence pads, panty liners, etc., but are not limited to these, and widely include articles used to absorb liquid discharged from the human body. To do.

  The following absorber manufacturing apparatus is disclosed regarding the embodiment mentioned above.

<1>
An air flow generated by suction from the inside of the rotating drum, the rotating drum having a concave portion for accumulation on the outer peripheral surface, and a duct for supplying the molded material in a scattered state toward the outer peripheral surface of the rotating drum. The absorbent body manufacturing apparatus for forming the absorbent body by stacking the molded body material in the accumulation recess,
The accumulation recess has a first region and a second region deeper than the first region,
Inside the duct, the surface is arranged in a space partitioned by a hanging plate hanging down from the top surface of the duct on the downstream side in the rotation direction of the rotating drum so that the surface is in contact with the molded body material and piled up. A scuffing roll that scrapes off an excessive amount of the molded body material, and a duct opening that is arranged downstream of the scuffing roll in the rotational direction of the rotating drum and takes in outside air,
The inside of the duct is upstream of the hanging plate in the rotation direction of the rotary drum, and the fiber stacking region for excessively stacking the scattered molded body material so as to overflow from the accumulation recess, The downstream side of the rotating drum with respect to the rotating drum with respect to the drooping plate, the excess amount of the formed body material scraped off is scraped off by the scuffing roll, and the scraped-off shaped body material is put into the accumulation recess. An apparatus for manufacturing an absorbent body, which is divided by the hanging plate into a restacked fiber region to be restacked.

<2>
In a state in which the molded material in a scattered state is stacked in the accumulation recess, the flow rate of outside air taken in from the duct opening between the scuffing roll and the top surface of the duct is determined by the scuffing roll and the scuffing roll. The apparatus for manufacturing an absorbent body according to <1>, wherein the apparatus is faster than the flow rate of outside air taken in from the duct opening between the rotating drums.
<3>
The flow rate (V1) of the outside air taken in from the duct opening between the scuffing roll and the top surface of the duct with respect to the flow velocity (V2) of the outside air taken in from the duct opening of the scuffing roll and the rotating drum. Ratio (V1 / V2) is 1 or more and 4 or less, Preferably it is 1.5 or more and 3 times or less, The manufacturing apparatus of the absorber as described in said <2>.
<4>
The flow velocity (V1) of the outside air taken in from the duct opening between the scuffing roll and the top surface of the duct is 5 m / s or more and 100 m / s or less, preferably 10 m / s or more and 70 m / s or less. The manufacturing apparatus of the absorber as described in <2> or <3>.
<5>
The flow rate (V2) of the outside air taken in from the duct opening of the scuffing roll and the rotating drum is 0.1 m / s or more and 70 m / s or less, preferably 0.1 m / s or more and 50 m / s or less. <2>-<4> any 1 item | term manufacturing apparatus of the absorber.
<6>
The said duct opening part is the manufacturing apparatus of the absorber of any one of said <1>-<5> which has the external air amount adjustment means which adjusts the opening area and adjusts the quantity of the external air taken in.
<7>
The manufacturing apparatus of the absorbent body according to any one of <1> to <6>, wherein a closing plate for closing the rotating drum side is disposed in the duct opening.
<8>
The said closing board is distribute | arranged over the full width of the duct opening part of the said duct, It is formed so that it can move to the said rotating drum side from the top | upper surface side of this duct opening part. Absorber manufacturing equipment.
<9>
The said duct opening part is an absorber manufacturing apparatus in any one of said <1>-<8> provided in the position of the top | upper surface side of this duct regarding the height direction of the said duct.
<10>
The said duct opening part is a manufacturing apparatus of the absorber in any one of said <1>-<9> provided above the said rotating drum rather than the rotating shaft of the said scuffing roll.

<11>
The absorber according to any one of <1> to <10>, wherein the rotating drum has a plurality of spaces partitioned therein, and has suction force adjusting means for adjusting the suction force of each space. Manufacturing equipment.
<12>
The said rotating drum is a manufacturing apparatus of the absorber as described in said <11> which has the space A and the space B which are the said space in the area | region where the said outer peripheral surface was covered with the said duct.
<13>
The apparatus for manufacturing an absorbent body according to <12>, wherein the space A and the space B are maintained at a negative pressure.
<14>
The apparatus for manufacturing an absorbent body according to <13>, wherein the negative pressure in the space B is set to be equal to or weaker than the negative pressure in the space A.
<15>
The apparatus for manufacturing an absorbent body according to <14>, wherein the negative pressure in the space B is set to a negative pressure that is weaker than the negative pressure in the space A.
<16>
The said 2nd area | region is a manufacturing apparatus of the absorber in any one of said <1>-<15> currently formed of the recessed part 23 for middle and high provided in the center area | region of the said recessed part for accumulation | storage.
<17>
While the accumulation concave portion of the rotating drum passes over the space A maintained at a negative pressure, a porous plate and a medium / high porous plate constituting the bottom surfaces of the first region and the second region The manufacturing apparatus for an absorbent body according to any one of <12> to <16>, wherein suction from the suction unit is performed via the suction part.
<18>
The rotating drum includes a cylindrical drum body, a suction adjustment plate fixed to be overlapped on the outer periphery of the drum body, and a medium-to-high porous plate (porous) fixed to the outer surface side of the suction adjustment plate. Member), a space plate fixed on the outer surface side of the medium / high porous plate, a porous plate (porous member) fixed on the outer surface side of the space plate, and a porous plate The manufacturing of the absorbent body according to any one of the above items <1> to <17>, including a concave partition plate fixed to be overlapped on the outer surface side and a ring plate fixed to be overlapped on the outer surface side of the concave partition plate. apparatus.
<19>
The concave section plate has a plurality of cross-shaped openings penetrating in the thickness direction in plan view, a cross-shaped opening defining member for partitioning each cross-shaped opening section, and penetrating in the thickness direction. The apparatus for manufacturing an absorbent body according to <18>, further including a plurality of openings and an opening defining part that partitions the openings.
<20>
The porous plate has a plurality of cross-shaped openings in plan view,
<18> or <19, wherein the cross-shaped opening of the porous plate is arranged at the same position as each cross-shaped opening of the concave partition plate fixed to be overlapped on the outer surface of the porous plate. The manufacturing apparatus of the absorber as described in>.
<21>
The space plate has an annular defining member formed along the outline of each cross-shaped opening of the porous plate in plan view,
The medium / high porous plate not only has a congruent outline with the annular defining member, but also has an overall shape of both the opening of the porous plate and the cross-shaped opening of the concave partition plate. The apparatus for manufacturing an absorbent body according to any one of <18> to <20>, wherein the shapes in plan view are in a congruent relationship.

<22>
The said duct opening part is a manufacturing apparatus of the absorber in any one of said <1>-<21> currently formed in the exit located in the said rotation direction downstream of the said rotating drum in the said duct.
<23>
In the inside of the duct on the upstream side in the rotation direction of the rotating drum from the hanging plate, a pair of partition plates disposed on both sides along the circumferential direction of the rotating drum,
The molded material in a scattered state is excessively stacked by the pair of partition plates so as to overflow from the stacking recesses to a region corresponding to the space between the pair of partitioning plates in the stacking recesses. An excessive amount of the molded body material was scraped off with the scuffing roll, and the molded body material scraped off in the partitioned space was re-stacked on both sides of the excessively piled portion in the accumulation recess. The manufacturing apparatus for an absorbent body according to any one of the above items <1> to <22>, which is fine.
<24>
Each of the bottom surface of the second region and the bottom surface of the first region is composed of a porous member having many suction holes,
On the inner surface side of the porous member in the concave portion for accumulation, an adjusting body for adjusting the suction force is disposed so as to overlap the inner surface of the porous member,
The adjustment body has a plurality of openings penetrating the adjustment body in the thickness direction, and a part of the opening is relative to an opening portion of the concave portion for accumulation relatively far from the porous member. The manufacturing apparatus for an absorbent body according to any one of <1> to <23>, wherein the opening area is smaller than that of the opening portion closer to the surface.
<25>
An adjusting body for adjusting the suction force is not disposed on the inner surface side of the porous member in the second region, and the suction hole of the porous member has an opening area on the outer surface side and an opening area on the inner surface side. The manufacturing apparatus of the absorber as described in said <24> which is the same.
<26>
The pair of partition plates are inclined toward the rotating drum so that the interval between the pair is gradually narrowed,
The apparatus for manufacturing an absorbent body according to any one of <1> to <25>, wherein an interval between end portions on the rotating drum side of the pair of partition plates is equal to a width of the second region.
<27>
<1> to <26, wherein the drooping plate is formed in a convex arc shape from the top surface of the duct to the upstream side in the circumferential direction (2X direction) of the rotating drum over the entire width of the duct. The manufacturing apparatus of the absorber of any one of>.
<28>
The said molded object material is a manufacturing apparatus of the absorber in any one of said <1>-<27> containing a fiber material.
<29>
The said molded object material is a manufacturing apparatus of the absorber in any one of said <1>-<28> containing a water absorbing polymer with a fiber material.
<30>
The scuffing roll according to any one of <1> to <29>, wherein the scuffing roll has a cylindrical roll body and a large number of scraping protrusions provided on the outer peripheral surface of the roll body. Absorber manufacturing equipment.
<31>
The scuffing roll of the absorbent body according to any one of <1> to <30>, wherein the surface facing the rotating drum rotates so as to move in a direction opposite to the rotating direction of the rotating drum. manufacturing device.
<32>
The circumferential speed of the scuffing roll is 2 times or more and 10 times or less, preferably 3 times or more and 5 times or less as compared with the circumferential speed of the rotating drum, according to any one of <1> to <31>. Absorber manufacturing equipment.
<33>
The said absorber is a manufacturing apparatus of the absorber in any one of said <1>-<32> used for absorbent articles, such as a disposable diaper, a sanitary napkin, an incontinence pad, and a panty liner.

DESCRIPTION OF SYMBOLS 1 Stacking apparatus 2 Rotating drum 20 Adjustment body 21 Outer peripheral surface 22 Concave part 23 Accumulation recessed part 24 Medium-high part recessed part 24 Suction adjustment plate 241 Annular definition member 242 MD definition member 243 CD definition member 244 Annular inner opening 245 Porous plate (porous member)
26 spatial plate 261 annular defining member 262 MD defining member 263 CD defining member 264 annular inner opening 265 opening 27 porous plate 27 (porous member)
271 Opening portion 28 Recessed partition plate 281 Cross-shaped opening 282 Opening portion defining member 283 Opening portion 284 Opening portion defining portion 285 MD defining member 286 CD defining member 291 Fixing plate 292 Central shaft portion 293 Plate 3 Absorber 32 Fibers 33 Thick part 331 Divided thick part 34 Thin part 341 Divided thin part 37 Core wrap sheet 4 Duct 40 Side wall 41 Partition plate 42 Scuffing roll 421 Roll body 422 Protrusion 43 Drooping plate 4S Partitioned space 44 Duct opening 441 Closing plate 5 Transfer roll 6 Vacuum conveyor 7 Cutting device 11 Vacuum box 13 Mesh belt 15 Wind shield plate

Claims (11)

An air flow generated by suction from the inside of the rotating drum, the rotating drum having a concave portion for accumulation on the outer peripheral surface, and a duct for supplying the molded material in a scattered state toward the outer peripheral surface of the rotating drum. The absorbent body manufacturing apparatus for forming the absorbent body by stacking the molded body material in the accumulation recess,
The accumulation recess has a first region and a second region deeper than the first region,
Inside the duct, the surface is arranged in a space partitioned by a hanging plate hanging down from the top surface of the duct on the downstream side in the rotation direction of the rotating drum so that the surface is in contact with the molded body material and piled up. A scuffing roll that scrapes off an excessive amount of the molded body material, and a duct opening that is arranged downstream of the scuffing roll in the rotational direction of the rotating drum and takes in outside air,
The inside of the duct is upstream of the hanging plate in the rotation direction of the rotary drum, and the fiber stacking region for excessively stacking the scattered molded body material so as to overflow from the accumulation recess, The downstream side of the rotating drum with respect to the rotating drum with respect to the drooping plate, the excess amount of the formed body material scraped off is scraped off by the scuffing roll, and the scraped-off shaped body material is put into the accumulation recess. An apparatus for manufacturing an absorbent body, which is divided by the hanging plate into a restacked fiber region to be restacked.   In a state in which the molded material in a scattered state is stacked in the accumulation recess, the flow rate of outside air taken in from the duct opening between the scuffing roll and the top surface of the duct is determined by the scuffing roll and the scuffing roll. The manufacturing apparatus of the absorber of Claim 1 which is faster than the flow velocity of the external air taken in from the said duct opening part between rotary drums.   The said duct opening part is a manufacturing apparatus of the absorber of Claim 1 or 2 which has an external air quantity adjustment means which adjusts the opening area and adjusts the quantity of the external air taken in.   The said rotating drum has the some space partitioned in the inside, The manufacture of the absorber of any one of Claims 1-3 which has a suction force adjustment means which adjusts the suction force of each said space. apparatus.   The said duct opening part is a manufacturing apparatus of the absorber in any one of Claims 1-4 currently formed in the exit located in the said rotation direction most downstream of the said rotating drum in the said duct. In the inside of the duct on the upstream side in the rotation direction of the rotating drum from the hanging plate, a pair of partition plates disposed on both sides along the circumferential direction of the rotating drum,
The molded material in a scattered state is excessively stacked by the pair of partition plates so as to overflow from the stacking recesses to a region corresponding to the space between the pair of partitioning plates in the stacking recesses. An excessive amount of the molded body material was scraped off with the scuffing roll, and the molded body material scraped off in the partitioned space was re-stacked on both sides of the excessively piled portion in the accumulation recess. The manufacturing apparatus for an absorbent body according to any one of claims 1 to 5, wherein the absorbent is fine. Each of the bottom surface of the second region and the bottom surface of the first region is composed of a porous member having many suction holes,
On the inner surface side of the porous member in the concave portion for accumulation, an adjusting body for adjusting the suction force is disposed so as to overlap the inner surface of the porous member,
The adjustment body has a plurality of openings penetrating the adjustment body in the thickness direction, and a part of the opening is relative to an opening portion of the concave portion for accumulation relatively far from the porous member. The manufacturing apparatus of the absorber of any one of Claims 1-6 whose opening area is small compared with the opening part of the nearer one.   An adjusting body for adjusting the suction force is not disposed on the inner surface side of the porous member in the second region, and the suction hole of the porous member has an opening area on the outer surface side and an opening area on the inner surface side. The manufacturing apparatus of the absorber according to claim 7 which is the same. In the inside of the duct on the upstream side in the rotation direction of the rotating drum from the hanging plate, a pair of partition plates disposed on both sides along the circumferential direction of the rotating drum,
The pair of partition plates are inclined toward the rotating drum so that the interval between the pair is gradually narrowed,
The apparatus for manufacturing an absorbent body according to any one of claims 1 to 8, wherein an interval between ends of the pair of partition plates on the rotating drum side coincides with a width of the second region.   The said duct opening part is a manufacturing apparatus of the absorber of any one of Claims 1-9 provided in the position of the top | upper surface side of this duct regarding the height direction of the said duct. The said duct opening part is a manufacturing apparatus of the absorber of any one of Claims 1-10 provided above the said rotating drum rather than the rotating shaft of the said scuffing roll.