Multi-stage roll type sheet molding apparatus

Patent metadata

Field	Value
Publication number	US-10179427-B2
Application number	US-201615371357-A
Country	US
Kind code	B2
Filing date	Dec 7, 2016
Priority date	Dec 11, 2015
Publication date	Jan 15, 2019
Grant date	Jan 15, 2019

Abstract

A multi-stage roll type sheet molding apparatus includes four or more molding rolls including a touch molding roll, a main molding roll and finish molding rolls disposed in the horizontal direction in parallel to each other, in which a molten sheet is supplied downward from above to a first nip part interposed between the touch molding roll and main molding roll, the sheet is compressed by the molding rolls, and the compressed sheet is windingly fed sequentially from the main molding roll to the finish molding rolls, thereby molding a sheet having a specific thickness. The apparatus further includes a rear-stage side rail for guiding the finish molding rolls in a horizontally movable manner and second to fourth hydraulic cylinders for horizontally moving the finish molding rolls to in such a manner that they can pressurize the sheet.

First claim

What is claimed is:

1. A multi-stage roll type sheet molding apparatus comprising:
four or more molding rolls comprising a touch molding roll, a main molding roll and a plurality of finish molding rolls disposed in parallel to each other in this order from a front stage side toward a rear stage side in a horizontal direction,
wherein the sheet molding apparatus is configured to supply a molten sheet downward from above to a nip part between the touch molding roll and the main molding roll, compress the sheet by the touch molding roll and the main molding roll, and feed the compressed sheet sequentially windingly fed from the main molding roll to the finish molding rolls, thereby molding a sheet having a specific thickness, and
wherein the sheet molding apparatus further comprises:
a guide device configured to horizontally guide the finish molding rolls respectively relative to molding rolls disposed on the front-stage side; and
a slide drive device configured to horizontally move the finish molding rolls being guided by the guide device relative to a respective one of the molding rolls disposed adjacently on the front-stage side for pressing the sheet therebetween, and

wherein a sheet delivery angle α is defined as an angle between a horizontal line extending through an axis of the main molding roll, and a connecting line extending through the axis of the main molding roll and an axis of a first finish molding roll, and
wherein the sheet delivery angle α is in a range of −30 degrees to 50 degrees, and
wherein the sheet delivery angle α has a negative value when the connecting line is above the horizontal line and a positive value when the connecting line is below the horizontal line, and
wherein the first finish molding roll is adjacent to the main molding roll.

2. The multi-stage roll type sheet molding apparatus according to claim 1 , wherein a roll diameter of the main molding roll is set smaller than a roll diameter of the first finish molding roll of the finish molding rolls, the first finish molding roll being adjacent to the main molding roll.

3. The multi-stage roll type sheet molding apparatus according to claim 1 , wherein a roll diameter of the main molding roll, and a roll diameter of the first finish molding roll of the finish molding rolls are set smaller than a roll diameter of a second finish molding roll of the finish molding rolls, the first finish molding roll being adjacent to the main molding roll, the second finish molding roll being adjacent to the first finish molding roll.

4. The multi-stage roll type sheet molding apparatus according to claim 1 , wherein there is provided a step between a first height and a second height, such that axes of the touch molding roll and the main molding roll are positioned at the first height, and axes of the finish molding rolls are positioned at the second height.

5. The multi-stage roll type sheet molding apparatus according to claim 1 , further comprising:
a lifting drive device configured to move the finish molding rolls in a vertical direction, thereby enabling adjustment of height positions of the finish molding rolls.

6. The multi-stage roll type sheet molding apparatus according to claim 1 , wherein, the touch molding roll is an elastic roll.

7. The multi-stage roll type sheet molding apparatus according to claim 1 , wherein, the touch molding roll and at least one of the molding rolls other than the touch molding roll are elastic rolls.

8. The multi-stage roll type sheet molding apparatus according to claim 1 , wherein the plurality of finish molding rolls are each disposed at a same vertical height.

9. The multi-stage roll type sheet molding apparatus according to claim 1 , wherein the main molding roll and the first finish molding roll are each disposed at a same vertical height.

10. The multi-stage roll type sheet molding apparatus according to claim 1 , wherein the guide device comprises a pair of rails extending in a longitudinal direction, and the slide drive device comprises an actuator.

11. A multi-stage roll type sheet molding apparatus comprising:
molding rolls configured to mold a sheet, the molding rolls comprising:
a touch molding roll;
a main molding roll disposed on a rear-stage side of the touch molding roll in parallel to the touch molding roll in a horizontal direction; and
a plurality of finish molding rolls disposed in parallel to each other in the horizontal direction and disposed on the rear stage side of the main molding roll;

a T die configured to supply a molten sheet downward from above to a nip part between the touch molding roll and the main molding roll;
a guide device configured to guide the finish molding rolls relative to the main molding roll; and
a slide drive device configured to horizontally move the molding rolls being guided by the guide device relative to an adjacent molding roll,
wherein the touch molding roll and the main molding roll are configured to compress the molten sheet supplied from the T die, and
wherein the finish molding rolls are configured to feed the compressed sheet windingly from the main molding roll to the finish molding rolls so as to mold the sheet,
wherein a sheet delivery angle α is defined as an angle between a horizontal line extending through an axis of the main molding roll, and a connecting line extending through the axis of the main molding roll and an axis of a first finish molding roll, and
wherein the sheet delivery angle α is in a range of −30 degrees to 50 degrees,
wherein the sheet delivery angle α has a negative value when the connecting line is above the horizontal line and a positive value when the connecting line is below the horizontal line, and
wherein the first finish molding roll is adjacent to the main molding roll.

12. The multi-stage roll type sheet molding apparatus according to claim 11 , wherein the plurality of finish molding rolls are each disposed at a same vertical height.

13. The multi-stage roll type sheet molding apparatus according to claim 11 , wherein the main molding roll and the first finish molding roll are each disposed at a same vertical height.

14. The multi-stage roll type sheet molding apparatus according to claim 11 , wherein the guide device comprises a pair of rails extending in a longitudinal direction, and the slide drive device comprises an actuator.

Assignees

• Japan Steel Works Ltd

Inventors

• Shinobudani Koji
• Shimodori Makoto
• CHIKARAISHI Atsushi

Classifications

• B29C43/245

  Adjusting calender parameters, e.g. bank quantity · CPC title

• B29C2043/467

  plurality of rollers arranged in a specific manner in relation to each other · CPC title

• B29C2043/468

  take-off rollers, i.e. arranged adjacent a material feeding device · CPC title

• B29C43/46 Primary

  Rollers · CPC title

• B29K2105/0067

  Melt · CPC title