Base paper roll supply device, base paper roll supply method, and device for manufacturing cardboard sheet

Patent metadata

Field	Value
Publication number	US-12454431-B2
Application number	US-202118008132-A
Country	US
Kind code	B2
Filing date	May 14, 2021
Priority date	Jun 5, 2020
Publication date	Oct 28, 2025
Grant date	Oct 28, 2025

Abstract

A base paper roll supply device includes: a first stand rotatably supporting a rear-liner base paper roll and a rear-liner replacement base paper roll; a second stand rotatably supporting a core base paper roll and a core replacement base paper roll; and a third stand rotatably supporting a front-liner base paper roll and a front-liner replacement base paper roll. The first stand, the second stand, and the third stand are arranged in order along a supply direction in which the rear liner, the core, and the front liner are supplied. At the first stand, the rear-liner replacement base paper roll is arranged at an upstream side in the supply direction with respect to the rear-liner base paper roll, and at the third stand, the front-liner replacement base paper roll is arranged at a downstream side in the supply direction with respect to the front-liner base paper roll.

First claim

The invention claimed is:

1 . Paper roll handling equipment comprising:
a first mill roll stand that rotatably supports a paper roll for top liner and a paper roll for top liner replacement; a second mill roll stand that rotatably supports a paper roll for medium paper and a paper roll for medium paper replacement; and a third mill roll stand that rotatably supports a paper roll for bottom liner and a paper roll for bottom liner replacement, wherein the first mill roll stand, the second mill roll stand, and the third mill roll stand are disposed in order along a supply direction of supplying a top liner, a medium, and a bottom liner, in the first mill roll stand, the paper roll for top liner replacement is disposed on an upstream side in the supply direction with respect to the paper roll for top liner, and in the third mill roll stand, the paper roll for bottom liner replacement is disposed on a downstream side in the supply direction with respect to the paper roll for bottom liner, wherein the first mill roll stand is capable of moving the paper roll for top liner and the paper roll for top liner replacement toward the supply direction, and the third mill roll stand is capable of moving the paper roll for bottom liner and the paper roll for bottom liner replacement toward a direction opposite to the supply direction.

2 . The paper roll handling equipment according to claim 1 , wherein the first mill roll stand is capable of sending out the top liner from the paper roll for top liner toward a direction opposite to the supply direction, and
the third mill roll stand is capable of sending out the bottom liner from the paper roll for bottom liner toward the supply direction.

3 . The paper roll handling equipment according to claim 2 , wherein a rotation direction of the paper roll for top liner by the first mill roll stand and a rotation direction of the paper roll for bottom liner by the third mill roll stand are opposite directions.

4 . The paper roll handling equipment according to claim 1 , wherein a rotation direction of the paper roll for top liner and a rotation direction of the paper roll for top liner replacement by the first mill roll stand are the same direction, and
a rotation direction of the paper roll for bottom liner and a rotation direction of the paper roll for bottom liner replacement by the third mill roll stand are the same direction.

5 . The paper roll handling equipment according to claim 1 , wherein in the second mill roll stand, the paper roll for medium paper replacement is disposed on the upstream side or the downstream side in the supply direction with respect to the paper roll for medium paper.

6 . The paper roll handling equipment according to claim 1 , wherein on one side in a direction intersecting the supply direction, a carry-in line for carrying in the paper roll for top liner replacement, the paper roll for medium paper replacement, and the paper roll for bottom liner replacement to the first mill roll stand, the second mill roll stand, and the third mill roll stand is provided, and a carry-out line for carrying out the used paper roll for top liner, the used paper roll for medium paper, and the used paper roll for bottom liner from the first mill roll stand, the second mill roll stand, and the third mill roll stand is provided.

7 . The paper roll handling equipment according to claim 6 , wherein a splice preparation unit that provides adhesive parts to tips of outer surfaces of the top liner, the medium, and the bottom liner in the paper roll for top liner replacement, the paper roll for medium paper replacement, and the paper roll for bottom liner replacement is provided on an upstream side of the carry-in line.

8 . A cardboard sheet manufacturing apparatus comprising:
the paper roll handling equipment according to claim 1 ; a single facer that manufactures a single-faced cardboard sheet by bonding the top liner to the corrugated medium; and a double facer that manufactures a cardboard sheet by bonding the bottom liner to the medium side of the single-faced cardboard sheet.

9 . A paper roll handling method that includes
a first mill roll stand that rotatably supports a paper roll for top liner and a paper roll for top liner replacement, a second mill roll stand that rotatably supports a paper roll for medium paper and a paper roll for medium paper replacement, and a third mill roll stand that rotatably supports a paper roll for bottom liner and a paper roll for bottom liner replacement, in which the first mill roll stand, the second mill roll stand, and the third mill roll stand are disposed in order along a supply direction of supplying a top liner, a medium, and a bottom liner, the method comprising: moving the paper roll for top liner replacement along the supply direction to supply the paper roll for top liner replacement to a position adjacent to the paper roll for top liner; and moving the paper roll for bottom liner replacement along a direction opposite to the supply direction to supply the paper roll for bottom liner replacement to a position adjacent to the paper roll for bottom liner, wherein the first mill roll stand is capable of moving the paper roll for top liner and the paper roll for top liner replacement toward the supply direction, and the third mill roll stand is capable of moving the paper roll for bottom liner and the paper roll for bottom liner replacement toward a direction opposite to the supply direction.

10 . The paper roll handling method according to claim 9 , wherein after completion of splice preparation of providing adhesive parts to tips of the top liner, the medium, and the bottom liner in the paper roll for top liner replacement, the paper roll for medium paper replacement, and the paper roll for bottom liner replacement, the paper roll for top liner replacement, the paper roll for medium paper replacement, and the paper roll for bottom liner replacement are transported to the first mill roll stand, the second mill roll stand, and the third mill roll stand.

Assignees

• Mitsubishi Heavy Ind Mach Systems Ltd

Inventors

• Mizutani Hideki

Classifications

• B65H2701/1762

  Corrugated · CPC title

• B65H19/126 Primary

  with both-ends supporting arrangements · CPC title

• B65H2301/41702

  management and organisation of stock and production · CPC title

• B65H2301/41704

  involving layout of production or storage facility · CPC title

• B31F1/28

  combined with uniting the corrugated webs to flat webs {; Making double-faced corrugated cardboard} · CPC title