Single facer, method for switching corrugated roll unit, and method for exchanging corrugated roll unit

Patent metadata

Field	Value
Publication number	US-11712867-B2
Application number	US-201917042994-A
Country	US
Kind code	B2
Filing date	Feb 13, 2019
Priority date	Mar 30, 2018
Publication date	Aug 1, 2023
Grant date	Aug 1, 2023

Abstract

A single facer equipped with a plurality of corrugated roll units each composed of a pair of corrugated rolls is provided with: a lifting/lowering device that causes each of the corrugated roll units to be lifted and lowered between a use position at which a core sheet is to be corrugated, a first position adjacent to and directly under the use position, and a second position adjacent to and directly under the first position; a horizontal movement device that causes each of the corrugated roll units to be moved horizontally between the first position, a third position adjacent to the first position on one side in a sheet transfer direction, and a fourth position adjacent to the first position on the other side in the sheet transfer direction; and a control device that controls the lifting/lowering device and the horizontal movement device to move the corrugated roll units.

First claim

The invention claimed is:

1. A single facer equipped with a plurality of corrugated roll units each composed of a pair of corrugated rolls, the single facer comprising:
a lifting/lowering device causing each of the corrugated roll units to be lifted and lowered between a use position at which a medium is to be corrugated, a first position adjacent to and directly under the use position, and a second position adjacent to and directly under the first position;
a horizontal movement device causing each of the corrugated roll units to be moved horizontally between the first position, a third position adjacent to the first position on one side in a sheet transfer direction, and a fourth position adjacent to the first position on the other side in the sheet transfer direction; and
a control device controlling the lifting/lowering device and the horizontal movement device to move the corrugated roll units.

2. The single facer according to claim 1 , wherein
three corrugated roll units having different flutes are provided as the plurality of corrugated roll units, and
the control device disposes any one of the three corrugated roll units suitable for a production order at the use position and disposes the remaining two corrugated roll units at standby positions which are any two of the first to fourth positions.

3. The single facer according to claim 2 , wherein
the first position and the second position are exchange positions used when the corrugated roll units are exchanged and the third position and the fourth position are the standby positions, and
the control device uses the first position and the second position in performing exchange between the corrugated roll unit disposed at the use position and the corrugated roll unit disposed at the third position or the fourth position in accordance with a change in production order.

4. The single facer according to claim 3 , wherein the lifting/lowering device includes two stages of accommodation support spaces accommodating and supporting the corrugated roll units to be lifted and lowered, one above the other, and is configured to be lifted and lowered in a state where the corrugated roll units are accommodated and supported in the respective accommodation support spaces.

5. The single facer according to claim 4 , wherein
when exchange is performed between the corrugated roll unit disposed at the use position and the corrugated roll unit disposed at the third position in accordance with a change in production order, the control device,
horizontally moves the corrugated roll unit disposed at the fourth position to the first position by operating the horizontal movement device,
lowers the corrugated roll unit at the use position to the first position and lowers the corrugated roll unit at the first position to the second position by operating the lifting/lowering device,
horizontally moves the corrugated roll unit at the third position to the first position and horizontally moves the corrugated roll unit at the first position to the fourth position by operating the horizontal movement device,
lifts the corrugated roll unit at the first position to the use position and lifts the corrugated roll unit at the second position to the first position by operating the lifting/lowering device, and
horizontally moves the corrugated roll unit at the first position to the third position by operating the horizontal movement device.

6. The single facer according to claim 1 , further comprising a support mechanism having a movable support member capable of switching between a retracted position not interfering with the corrugated roll unit when the corrugated roll unit is lifted and lowered to the use position and a support position supporting the corrugated roll unit at the use position,
wherein the control device performs control to switch a position of the movable support member between the retracted position and the support position.

7. The single facer according to claim 2 , further comprising a width direction movable mechanism allowing the corrugated roll unit at at least one of the two standby positions to move in a device width direction orthogonal to the sheet transfer direction.

8. The single facer according to claim 7 , further comprising a width direction movement device moving the corrugated roll unit at the one standby position in the device width direction.

9. A method for switching a corrugated roll unit of a single facer, the method being for switching the corrugated roll unit to be used by performing exchange between the corrugated roll unit disposed at the use position and the corrugated roll unit disposed at the third position in accordance with a change in production order in the single facer according to claim 3 , the method comprising:
a step of horizontally moving the corrugated roll unit disposed at the fourth position to the first position by operating the horizontal movement device;
a step of lowering the corrugated roll unit at the use position to the first position and lowering the corrugated roll unit at the first position to the second position by operating the lifting/lowering device;
a step of horizontally moving the corrugated roll unit at the third position to the first position and horizontally moving the corrugated roll unit at the first position to the fourth position by operating the horizontal movement device;
a step of lifting the corrugated roll unit at the first position to the use position and lifting the corrugated roll unit at the second position to the first position by operating the lifting/lowering device; and
a step of horizontally moving the corrugated roll unit at the first position to the third position by operating the horizontal movement device.

10. A method for exchanging a corrugated roll unit of a single facer, the method being for exchanging the corrugated roll unit at the standby position in the single facer according to claim 7 , the method comprising:
a carrying-out step of moving the corrugated roll unit at the one standby position in a carrying-out direction of the device width direction and carrying out the corrugated roll unit; and
a carrying-in step of moving a corrugated roll unit different from the carried-out corrugated roll unit in a carrying-in direction of the device width direction and carrying in the different corrugated roll unit.

Assignees

• Mitsubishi Heavy Ind Mach Systems Ltd

Inventors

• Mizutani Hideki
• Nitta Takashi

Classifications

• B31F1/2868 Primary

  Exchangeable corrugating cylinders (means for changing cutting members in shearing devices B23D35/008) · CPC title

• B31F1/2831

  Control · CPC title