Crusher, absorber-manufacturing device, and pulp sheet-crushing method

Patent metadata

Field	Value
Publication number	US-2016206480-A1
Application number	US-201414917616-A
Country	US
Kind code	A1
Filing date	Sep 9, 2014
Priority date	Sep 26, 2013
Publication date	Jul 21, 2016
Grant date	—

Abstract

Provided is a crusher capable of omitting a device for feeding a pulp sheet from outside into inside of a casing or suppressing a driving force of this device to be small and an absorber-manufacturing device provided with the same. A pulp sheet (P) is guided to a contact position (m) where the pulp sheet (P) and crushing edges ( 9 b ) of a cutter ( 9 ) come into contact from a position upstream of a virtual line (L 3 ) orthogonal to a tangent line (L 2 ) of a rotational path (R 1 ) of the crushing edges ( 9 b ) at the contact position (m) and passing through the contact position (m) in a rotational direction (Y 2 ) by a guiding section ( 5 a ) provided in a casing ( 5 ) and configured to guide the pulp sheet (P) from outside into inside of the casing ( 5 ).

First claim

1 . A crusher for crushing a pulp sheet, comprising:
a cutter configured to rotate about a predetermined axis; and a casing configured to house the cutter, the cutter having, on an outer periphery thereof, a crushing edge configured to crush the pulp sheet by coming into contact with the pulp sheet; the casing includes a guiding section configured to guide the pulp sheet toward a contact position, where the pulp sheet and the crushing edge of the cutter come into contact, from outside of the casing into inside of the casing; and the guiding section guiding the pulp sheet toward the contact position from a position upstream of a virtual line orthogonal to a tangent line to a rotational path of the crushing edge at the contact position and passing through the contact position in a rotational direction.

2 . A crusher according to claim 1 , wherein the guiding section guides the pulp sheet to the contact position in a posture inclined with respect to the tangent line to the rotational path of the crushing edge at the contact position.

3 . A crusher according to claim 1 , wherein:
the axis horizontally extends; and the contact position is located higher than a vertical center of the cutter.

4 . A crusher according to claim 1 , wherein the guiding section guides the pulp sheet in a horizontal direction.

5 . An absorber-manufacturing device for manufacturing an absorber, comprising:
a crusher according to claim 1 ; a fiber stacking machine configured to mold pulp fibers crushed by the crusher into a predetermined shape of the absorber; and a duct configured to introduce the pulp fibers from the crusher to the fiber stacking machine.

6 . A pulp sheet-crushing method for crushing a pulp sheet using a crusher with a cutter configured to rotate about a predetermined axis and a casing configured to house the cutter, a crushing edge configured to crush the pulp sheet by coming into contact with the pulp sheet being provided on an outer periphery of the cutter, and a guiding section configured to guide the pulp sheet toward a contact position, where the pulp sheet and the crushing edge of the cutter come into contact, from outside of the casing into inside of the casing being provided in the casing, the pulp sheet-crushing method comprising:
a step of supplying the pulp sheet into the crusher through the guiding section such that the pulp sheet moves toward the contact position from a position upstream of a virtual line orthogonal to a tangent line to a rotational path of the crushing edge at the contact position and passing through the contact position in a rotational direction.

Assignees

• Zuiko Corp

Inventors

• Wada Takao

Classifications

• D21B1/066

  the raw material being pulp sheets · CPC title

• B02C2018/2208

  for weblike material · CPC title

• A61F13/15723

  Partitioning batts; Cutting · CPC title

• A61F13/15617 Primary

  Making absorbent pads from fibres or pulverulent material with or without treatment of the fibres · CPC title

• D21B1/061

  using cutting devices · CPC title