US 5,662,950 AGranted

Roll bending device for forming plastic sheet

AssigneeToshiba Machine Co., Ltd.

InventorToshihiko Kusago

Life of this patent

Estimating the term…

Loading patent…

Abstract

The present invention aims to provide a roll bending device for forming plastic sheet wherein no bending cylinders are used and operability is improved. A roll has a shaft at its both end portions, a second roll has a shaft at its both end portions. A pair of first housings has a bearing for supporting the shaft, and is positioned at both end portions of the shaft. A pair of housings has a bearing for supporting the shaft, and is positioned at both end portions of the shaft. A pair of housings has a bearing for supporting the shaft, and is positioned at the inside of the housings. A pair of housings has a bearing for supporting the shaft, and is positioned at the inside side of the housings. A pair of main cylinders supports the housings to pressurize the roll in a direction of the roll. A pair of gap adjusting devices is provided between the housings and to adjust a gap therebetween.

Claims2

Dependent claims

A roll bending device for forming plastic sheet, comprising:

a first roll having a first shaft at its both end portions;
a second roll, having a second shaft at its both end portions, and arranged in parallel with said first roll with a gap portion therebetween for pressing and forming plastic sheets;
a pair of first housings, having a bearing for supporting said first shaft, and positioned at both end portions of said first shaft;
a pair of second housings, having a bearing for supporting said second shaft, and positioned at both end portions of said second shaft;
a pair of third housings, having a bearing for supporting said first shaft, positioned at the inside of the first housing, and fixed to a frame;
a pair of fourth housings, having a bearing for supporting said second shaft, positioned at the inside of the second housing, and fixed to said frame;
a pair of main cylinders for supporting said fourth housings having a base portion fixed to said frame, pressing said second roll in a direction of said first roll;
and
a pair of gap adjusting means, provided between said first housings and said second housings, for adjusting a gap therebetween.

6 more elements

Dependencies are inferred from the claim text.