JP6250344B2 - Crusher and absorber manufacturing apparatus equipped with the same - Google Patents

Description

  The present invention relates to a pulverizer for pulverizing a pulp sheet and an absorber manufacturing apparatus including the pulverizer.

  An absorber used for a disposable diaper or the like is manufactured by forming pulp fibers obtained by pulverizing a pulp sheet into a predetermined shape.

  As an apparatus for pulverizing a pulp sheet, for example, a pulverizer described in Patent Document 1 is known.

  The pulverizer described in Patent Document 1 includes a casing and a rotary blade that is housed in the casing and has a pulverization blade that can rotate around a rotation axis.

  The rotating blade crushes the pulp sheet introduced into the casing by rotating the crushing blade around the rotation axis.

JP 2011-152351 A

  Here, an outer blade having an uneven shape for pulverizing the pulp sheet with the rotating pulverizing blade is provided in the casing.

  If the pulverization of the pulp sheet is continued for a long period of time, the outer blade may be clogged, and in this case, it is necessary to perform maintenance (cleaning, etc.) of the outer blade.

  However, in the absorber manufacturing apparatus described in Patent Document 1, the existence of the outer cutter is not clear, and maintenance of the outer cutter is not assumed.

  The objective of this invention is providing the grinder which can perform maintenance of an outer blade easily, and an absorber manufacturing apparatus provided with the same.

In order to solve the above problems, the present invention is a pulverizer for pulverizing a pulp sheet to produce pulp fibers, the rotary blade having a pulverizing blade rotatable around a preset axis; A casing for storing the pulverization blade, the casing having an introduction port for introducing a pulp sheet, and a lead-out port that is provided at a position different from the introduction port in the circumferential direction of the shaft and leads out pulp fibers And the casing is attached to the case main body and pivoted so as to cover an outer peripheral surface of the pulverizing blade in a range from the inlet to the outlet along the rotation direction of the pulverizing blade. a covering portion, the between the outer peripheral surface of the pulverizing blade with is provided on the inner surface of the rotating cover portion in a state where the whole is covered from the outside by the rotating cover portion Parupushi An outer blade that pulverizes the blade, and the rotating covering portion is between a covering position that covers an outer peripheral surface of the pulverizing blade and an open position that opens the pulverizing blade and the outer blade to the outside of the casing. Thus, a crusher is provided that is rotatably attached to the case body.

  According to the present invention, since the outer blade is provided in the rotation covering portion that covers the range from the inlet port to the outlet port along the rotation direction of the pulverizing blade, the pulp sheet introduced from the inlet port is pulverized. Can be reliably pulverized between the outer cutter and the outer cutter.

  Here, since the rotation covering portion can be rotated to the open position where the outer blade is opened to the outside of the casing, the outer blade can be maintained with the rotation covering portion rotated to the open position. .

  Therefore, according to the present invention, the outer blade can be maintained by a simple operation of rotating the rotation covering portion with respect to the case body.

  In the pulverizer, it is preferable that the outer blade is detachable from the case body.

  According to the said aspect, when an outer blade is consumed, an outer blade can be replaced | exchanged.

In the pulverizer, the rotary blade has a rotation shaft extending in the axial direction from both side surfaces of the pulverization blade, and the casing covers both side surfaces of the pulverization blade while being penetrated by the rotation shaft. A pair of side plates, and the pair of side plates is connected to the main body side plate belonging to the case main body and the rotation covering portion by a line segment connecting the introduction port to the outlet port via the rotation shaft in a side view. It is preferable to be divided into a rotating side plate that is attached to the case body so as to be rotatable around an axis parallel to the rotating shaft .

  According to the above aspect, both the rotation side plates holding the rotation covering portion can be rotated around an axis parallel to the rotation axis. Therefore, both sides of the pulverizing blade are covered with each rotating side plate in a state where the rotating covering portion is in the covering position, and both the side surfaces and the rotating shaft of the pulverizing blade are connected in a state where the rotating covering portion is rotated to the open position. It can be opened to the outside of the casing.

  Therefore, the rotary blade can be maintained in a wider range.

  In the pulverizer, the pulverizer further includes a pair of bearings that rotatably support the rotating shaft outside the casing, and a base that fixes the bearings on a preset installation surface. Each of the bearings is preferably detachable from the base.

  According to the said aspect, a rotary blade can be removed from a casing by removing a pair of bearing from a base in the state which rotated the rotation coating | coated part and the rotation side board to the open position.

  Accordingly, it is possible to replace the grinding blade when the grinding blade is consumed.

  In the pulverizer, the main body side plate and the rotating side plate are each provided with a seal member that comes into contact with the rotating shaft in a slidable state, and the main body side plate sealing member and the rotating side plate seal It is preferable that the member is arranged so as to be continuous over the entire circumference of the rotation shaft when the rotation covering portion is rotated to the covering position.

  According to the above aspect, the rotation covering portion (rotation side plate) is rotated to the covering position, so that the seal member and the rotation shaft come into contact with each other over the entire circumference of the rotation shaft, and the outside of the casing of the pulp fiber. Can be prevented from being derived.

  Therefore, workability at the time of maintenance is improved as compared with the case where the casing sealing operation is performed separately from the rotation operation of the rotation covering portion.

  Further, the present invention is an absorbent body manufacturing apparatus for manufacturing an absorbent body, wherein the pulverizer, and a fiber stacker that forms pulp fibers pulverized by the pulverizer into a preset absorbent body shape, And a duct for guiding the pulp fiber from the pulverizer to the stacker.

  According to the present invention, maintenance of the outer blade can be easily performed.

It is side surface sectional drawing which shows roughly the whole structure of the absorber manufacturing apparatus which concerns on this invention. It is side surface sectional drawing which expands and shows the grinder shown in FIG. It is the III-III sectional view taken on the line of FIG. It is the IV-IV sectional view taken on the line of FIG. FIG. 3 is a view corresponding to FIG. 2 illustrating a state in which the rotation unit is rotated to an open position.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. The following embodiments are examples embodying the present invention, and are not of a nature that limits the technical scope of the present invention.

  Referring to FIG. 1, the absorbent body manufacturing apparatus 1 is preset with a pulverizer 2 that pulverizes a pulp sheet P to generate pulp fibers, and pulp fibers pulverized by the pulverizer 2 as the shape of the absorber. The stacker 3 is formed into a shape, and the duct 4 guides the pulp fibers from the crusher 2 to the stacker 3.

  The duct 4 is connected to a pulp fiber outlet 7 b in the pulverizer 2.

  The fiber stacker 3 includes a rotating drum 3a having a concave portion 3b having a shape corresponding to the shape of the absorber on the outer peripheral surface thereof.

  The rotating drum 3a is arranged so that a part of the outer peripheral surface thereof is located in the opening 4a on the downstream side of the duct 4, and rotates in the direction of the arrow Y3 so that the recesses 3b sequentially face the opening 4a. Is possible.

  The rotary drum 3a is provided with an air inlet 3c that communicates with the bottom of the recess 3b. When the air in the recess 3b is sucked through the air inlet 3c, the pulp fibers in the duct 4 are sucked into the recess 3b and molded.

  Hereinafter, with reference to FIG.2 and FIG.3, the specific structure of the grinder 2 is demonstrated.

  The pulverizer 2 includes a rotary blade 5 having a rotary shaft 5a and a pulverizing blade 5b rotatable around the rotary shaft 5a, and a pair of support members 6 that support the rotary shaft 5a on an installation surface S (see FIG. 3). , A casing 7 for housing the pulverizing blade 5b, and a motor 8 for rotating the rotary shaft 5a in the direction indicated by the arrow Y2.

  The rotary blade 5 is configured by the rotary shaft 5a penetrating the grinding blade 5b. That is, the rotating shaft 5a has both end portions extending from both side surfaces of the grinding blade 5b. The crushing blade 5b has a plurality of blades formed on the outer peripheral surface thereof.

  Both support members 6 each include a base 6a provided on the installation surface S, and a bearing 6b that is detachably attached to the base 6a and supports the rotary shaft 5a. Both ends of the rotating shaft 5 a are rotatably supported by bearings 6 b of both supporting members 6.

  The casing 7 is provided between the support members 6. Further, the casing 7 is provided with an introduction port 7a into which the pulp sheet P is introduced in the direction indicated by the arrow Y1 (see FIG. 1), and a pulp fiber at a position different from the introduction port 7a in the circumferential direction of the rotating shaft 5a. And a deriving port 7b for deriving.

  2 to 5, the casing 7 covers a case main body 9 that covers the lower part of the crushing blade 5 b, and an upper part of the crushing blade 5 b, and a rotation that is parallel to the rotating shaft 5 a with respect to the case main body 9. And a rotating portion 10 that is rotatably attached around the moving shaft 19.

  The case main body 9 is provided between a pair of main body side plates (main body side plates) 11 covering both side surfaces of the crushing blade 5b and the main body side plates 11, and is guided along the rotation direction of the crushing blade 5b (arrow Y2). In the range from the outlet 7b to the introduction port 7a, a main body covering portion 12 that covers the outer peripheral surface of the grinding blade 5b and a main body outer blade 14 that is fixed to the inner side surface of the main body covering portion 12 are provided.

  The main body side plate 11 has an insertion groove 11c through which the rotation shaft 5a is inserted, a seal member 11d that extends inward of the insertion groove 11c and contacts the rotation shaft 5a in a slidable state, and toward the outside of the casing 7. And a protruding fixing portion 11b.

  The main body outer blade 14 has an uneven shape for pulverizing the pulp sheet P with the pulverizing blade 5b. For example, the main body outer blade 14 can be formed of expanded metal. Further, the main body outer blade 14 is welded to the main body covering portion 12.

  The rotating unit 10 is provided between a pair of rotating side plates (rotating side plates) 15 that covers both side surfaces of the crushing blade 5b and both rotating side plates 15, and the rotation direction of the crushing blade 5b (arrow Y2). In the range from the inlet port 7a to the outlet port 7b along the outer peripheral surface of the grinding blade 5b, the outer rotary blade 17 fixed to the inner surface of the rotary coating portion 16, and both A pair of rotating shafts 19 (only one is shown in FIGS. 2, 4 and 5) provided on the moving side plate 15 and a position on the both sides of the rotating side plate 15 opposite to the introduction port 7a (position on the duct 4 side). A pair of shaft attachment plates 18 (only one is shown in FIG. 4) for attaching both the rotation shafts 19 to each other, and a gripping portion 20 (see FIG. 2) gripped when the rotation portion 10 is rotated. It has.

  As shown in FIGS. 2 and 4, the rotating side plate 15 and the main body side plate 11 are separated from one side plate by a line segment connecting the introduction port 7 a to the outlet port 7 b through the rotation shaft 5 a in a side view. It has been done. That is, by arranging the side plates 11 and 15 so that the contact surface (lower surface) 15a of the rotating side plate 15 and the contact surface (upper surface) 11a of the main body side plate 11 come into contact with each other, one side surface of the grinding blade 5b is Covered by the side plates 11, 15.

  Here, the rotation position of the rotation unit 10 in a state where both contact surfaces 11a and 15a are in contact is the covering position, and the rotation position of the rotation unit 10 shown in FIG. 4 and the rotation unit 10 shown in FIG. It is.

  At the covering position, both side surfaces of the pulverizing blade 5b are covered with the both side plates 11 and 15 as described above, and the outer peripheral surface of the pulverizing blade 5b is covered with both the covering portions 12 and 16. In the covering position, a gap D (see FIG. 2) corresponding to the introduction port 7a is formed between the case main body 9 (main body covering portion 12) and the rotating portion 10 (rotating covering portion 16).

  On the other hand, in the open position, the upper side of the crushing blade 5b and the outer rotating blade 17 are opened to the outside of the casing by rotating the rotating side plate 15 and the rotating covering portion 16 upward about the rotating shaft 19. .

  3-5, the rotation side plate 15 has an insertion groove 15c through which the rotation shaft is inserted, and a seal member that extends inward of the insertion groove 15c and contacts the rotation shaft 5a in a slidable state. 15 d and a fixing portion 15 b protruding toward the outside of the casing 7.

  The seal member 15d prevents the pulp fibers from being led out of the casing 7 in cooperation with the seal member 11d of the case body 9 described above. Specifically, the seal members 11d and 15d are arranged so as to be continuous over the entire circumference of the rotating shaft 5a when the rotating portion 10 is rotated to the covering position. The seal members 11d and 15d are made of felt, for example.

  The fixing portion 15b is provided at a position facing the fixing portion 11b in the vertical direction in a state where the rotating portion 10 is rotated to the covering position. A bolt B1 is attached to the fixing portion 15b, and the fixing portion 15b and the fixing portion 11b are fixed by screwing the bolt B1 into a female screw portion (not shown) formed in the fixing portion 11b. Thereby, the rotation part 10 is fixed to the case main body 9 at the covering position.

  The rotation covering portion 16 includes a covering portion main body 16a that covers the outer peripheral surface of the crushing blade 5b, and a pair of flange portions 16b provided at both ends of the covering portion main body 16a.

  The flange portion 16 b is disposed along the inner surface of the rotating side plate 15. And the rotation coating | coated part 16 is being fixed to the rotation side board 15 when the volt | bolt B2 which penetrates the flange part 16b screws in the screw hole 15e of the rotation side board 15. FIG. On the other hand, the rotation covering portion 16 is separated from the rotation side plate 15 by removing the bolt B2 from the screw hole 15e.

  The rotating outer blade 17 has an uneven shape for pulverizing the pulp sheet P with the pulverizing blade 5b. For example, the rotating outer blade 17 can be formed of expanded metal. Further, the rotating outer blade 17 is welded to the rotating covering portion 16 that can be separated from the rotating side plate 15 as described above. Therefore, the rotating outer blade 17 can be detached from the case body 9 together with the rotating covering portion 16.

  The rotating shaft 19 is inserted from the outside (outside of the casing 7) into a through hole (not shown) formed in the main body side plate 11.

  The shaft attachment plate 18 holds the rotation shaft 19 and is detachably attached to the rotation side plate 15 by a bolt B3. By removing the shaft attachment plate 18 from the rotation side plate 15, the rotation unit 10 can be separated from the case body 9. Accordingly, the rotating outer blade 17 can be detached from the case body 9 as the entire rotating unit 10.

  As described above, the rotating outer blade 17 is provided in the rotating covering portion 16 that covers the range from the inlet 7a to the outlet 7b along the rotation direction (arrow Y2) of the crushing blade 5b. The pulp sheet P introduced from the inlet 7a can be reliably pulverized between the pulverizing blade 5b and the rotating outer blade 17.

  Here, since the rotation covering portion 16 can be rotated to an open position where the rotation outer blade 17 is opened to the outside of the casing 7, the rotation covering portion 16 is not rotated in a state where the rotation covering portion 16 is rotated to the open position. Maintenance of the blade 17 can be performed.

  Therefore, the rotating outer blade 17 can be maintained by a simple operation of rotating the rotation covering portion 16 with respect to the case body 9.

  Moreover, according to the said embodiment, there exist the following effects.

  Since the rotating outer blade 17 can be attached to and detached from the case body 9, the rotating outer blade 17 can be replaced when the rotating outer blade 17 is consumed.

  Both the rotation side plates 15 holding the rotation covering portion 16 are rotatable around a rotation shaft 19 parallel to the rotation shaft 5a. Therefore, both side surfaces of the crushing blade 5b are covered with the respective rotation side plates 15 in a state where the rotation covering portion 16 is in the covering position, and both sides of the crushing blade 5b in a state where the rotation covering portion 16 is rotated to the open position. The surface and the rotating shaft 5 a can be opened to the outside of the casing 7.

  Therefore, the rotary blade 5 can be maintained in a wider range.

  The rotary blade 5 can be removed from the casing 7 by removing the pair of bearings 6b from the base 6a in a state in which the rotary cover portion 16 and the rotary side plate 15 are rotated to the open position.

  Therefore, the crushing blade 5b can be replaced when the crushing blade 5b is consumed.

  When the rotation covering portion 16 is rotated to the covering position, the sealing members 11d and 15d and the rotating shaft 5a come into contact with each other over the entire circumference of the rotating shaft 5a, thereby preventing the pulp fiber from being led out to the outside of the casing 7. can do.

  Therefore, in addition to the rotation operation of the rotation covering portion 16, the workability at the time of maintenance is improved as compared with the case where the casing 7 is sealed.

  In addition, in the said embodiment, although the rotation coating | coated part 16 and the rotation part 10 are attached with respect to the case main body 9 so that attachment or detachment is possible, it replaces with or in addition to this, the rotation outer blade 17 is rotation-coated. The part 16 may be detachably attached.

P Pulp sheet S Installation surface 1 Absorber manufacturing apparatus 2 Pulverizer 3 Stacker 4 Duct 5 Rotating blade 5a Rotating shaft 5b Grinding blade 6a Base 6b Bearing 7 Casing 7a Inlet 7b Outlet 9 Case body 10 Rotating part 11 Body side plate 11d, 15d Seal member 15 Rotating side plate 16 Rotating covering 17 Rotating outer blade 19 Rotating shaft

Claims (6)

A pulverizer for pulverizing a pulp sheet to produce pulp fibers,
A rotary blade having a grinding blade rotatable around a preset axis;
A casing for housing the pulverizing blade, the casing having an inlet for introducing a pulp sheet, and an outlet for leading the pulp fiber provided at a position different from the inlet in the circumferential direction of the shaft And
The casing includes a case main body, and a rotation covering portion that is attached to the case main body and covers an outer peripheral surface of the pulverizing blade in a range from the introduction port to the outlet port along the rotation direction of the pulverization blade. An outer blade that is provided on the inner surface of the rotating coating portion in a state that the entire portion is covered from the outside by the rotating coating portion and that pulverizes the pulp sheet between the outer peripheral surface of the pulverizing blade, Have
The rotation covering portion is rotatable with respect to the case body between a covering position that covers the outer peripheral surface of the crushing blade and an open position that opens the crushing blade and the outer blade to the outside of the casing. Attached to the crusher.   The pulverizer according to claim 1, wherein the outer blade is detachable from the case body. The rotary blade has rotary shafts extending in the axial direction from both side surfaces of the grinding blade,
The casing has a pair of side plates that cover both side surfaces of the crushing blade in a state of being penetrated by the rotating shaft,
The pair of side plates hold the main body side plate belonging to the case main body and the rotation covering portion by a line segment connecting the introduction port to the lead-out port through the rotation shaft in a side view and the case main body. The pulverizer according to claim 1, wherein each of the pulverizers is divided into a rotation side plate that is rotatably attached to an axis parallel to the rotation axis. The crusher further includes a pair of bearings that rotatably support the rotating shaft outside the casing, and a base that fixes the bearings on a preset installation surface,
The crusher according to claim 3, wherein the pair of bearings are detachable from the base. The main body side plate and the rotation side plate are each provided with a seal member that comes into contact with the rotating shaft in a slidable state,
The seal member of the main body side plate and the seal member of the rotating side plate are arranged so as to be continuous over the entire circumference of the rotating shaft when the rotating covering portion is rotated to the covering position. Item 5. A pulverizer according to Item 3 or 4. An absorber manufacturing apparatus for manufacturing an absorber,
A pulverizer according to any one of claims 1 to 5,
A fiber stacking machine for forming pulp fibers pulverized by the pulverizer into a shape of a preset absorber;
The absorber manufacturing apparatus provided with the duct which guides the said pulp fiber from the said crusher to the said fiber pile.

Images