Browse Prior Art Database

Rotating Inverter with Axis Parallel to the Process Direction

IP.com Disclosure Number: IPCOM000018825D
Publication Date: 2003-Aug-15
Document File: 2 page(s) / 31K

Publishing Venue

The IP.com Prior Art Database

Abstract

The sheet is driven into one or multiple sets of nips formed by transporting rollers. Once the sheet enters the inverter, the inverter will rotate 180 degrees or a certain angle with axis parallel to the process direction. The inverter turns the sheet over and effectively maintains the sheet orientation in its travel direction. The sheet is inverted and the lead edge still remains as the lead edge. For high speed applications, the inverter can start to rotate once the trail edge of the sheet enters this rotating inverter. The inverter rotates 180 degrees of rotation to invert the sheet. The drive rollers in this inverter have their own drive motor. The rotation of this inverter unit is driven at the side of the inverter by pulleys and timing belt, or a set of gears, or other suitable drive mechanism for rotation. A separate motor with its own acceleration, deceleration and motion control handles the rotation. Once the rotation is complete, it is ready to accept the next sheet. If the next sheet doesn't need to be reversed, the inverter will not rotate. It will just transport the sheet straight through.

This text was extracted from a Microsoft Word document.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 53% of the total text.

Rotating Inverter with Axis Parallel to the Process Direction

The sheet is driven into one or multiple sets of nips formed by transporting rollers. Once the sheet enters the inverter, the inverter will rotate 180 degrees or a certain angle with axis parallel to the process direction. The inverter turns the sheet over and effectively maintains the sheet orientation in its travel direction. The sheet is inverted and the lead edge still remains as the lead edge. For high speed applications, the inverter can start to rotate once the trail edge of the sheet enters this rotating inverter. The inverter rotates 180 degrees of rotation to invert the sheet. The drive rollers in this inverter have their own drive motor. The rotation of this inverter unit is driven at the side of the inverter by pulleys and timing belt, or a set of gears, or other suitable drive mechanism for rotation. A separate motor with its own acceleration, deceleration and motion control handles the rotation. Once the rotation is complete, it is ready to accept the next sheet. If the next sheet doesn’t need to be reversed, the inverter will not rotate. It will just transport the sheet straight through.

Figure 1 shows the top view of the proposed rotating inverter. Figure 2 shows the side view of the proposed rotating inverter. It shows 2 sets of nip forming rollers. It can be a single set of nip forming rollers or more sets. A single set of nip forming rollers may not hold the lightweight papers firmly. Multiple sets of rollers will help in this regard. Every shaft shows two segmented rolls attached to it. It can be single segment or more segments. The shafts are mounted to frames at both ends. The frames are then mounted to the inside of a large pulley so that the full inverter unit can be rotated. Instead of the pulley, it can be gears or other suitable rotating drive mechanisms also. The sheet is driven into the inverter. The inverter will then rotate 180 degrees or a certain angle with respect to an axis parallel to the process direction. The inverter turns the sheet over and effectively maintains the sheet orientation in its direction (i.e. maintains the lead edge of the sheet in the traveling direction). The drive rollers of the paper in this inverter have their own drive motor. The rotation of this inverter unit is driven at the smaller pul...