Belt sander for delivering workpiece at a constant speed
OwnerWang Tien Wanginventor
Life of this patent
Estimating the term…
Abstract
A belt sander includes a sand belt unit including an upper roller, a lower roller located under the upper roller and rotated by a propeller shaft of a drive motor, and two auxiliary rollers located at two sides of the lower roller. Each of the two auxiliary rollers and the lower roller are rotated synchronously in the opposite direction. Thus, the workpiece is pressed by the two auxiliary rollers so that the workpiece is moved forward at a constant speed without acceleration during the grinding process of the sand belt, thereby enhancing the grinding effect of the sand belt on the workpiece.
Claims9
A belt sander, comprising:
- a sand belt unit including an upper roller, a lower roller located under the upper roller and rotated by a propeller shaft of a drive motor, and two auxiliary rollers located at two sides of the lower roller;
- wherein
- each of the two auxiliary rollers and the lower roller are rotated synchronously;
- the two auxiliary rollers are rotated in the same direction, that direction being opposite to the direction of rotation of the lower roller:
- the lower roller has a shaft extended through a support plate and connected to the propeller shaft of the drive motor so that the lower roller is directly rotated by the propeller shaft of the drive motor to rotate with the propeller shaft of the drive motor synchronously in the same direction.
A belt sander, comprising:
- a sand belt unit including an upper roller, a lower roller located under the upper roller and rotated by a propeller shaft of a drive motor, and two auxiliary rollers located at two sides of the lower roller;
- wherein
- each of the two auxiliary rollers and the lower roller are rotated synchronously;
- the two auxiliary rollers are rotated in the same direction, that direction being opposite to the direction of rotation of the lower roller;
- the sand belt unit further includes a propeller wheel rotated with the propeller shaft of the drive motor synchronously, two driven wheels each secured on a distal end of a respective one of the two auxiliary rollers for rotating the respective auxiliary roller, and a belt mounted between the propeller wheel and the two driven wheels so that each of the two driven wheels is rotated with the propeller wheel synchronously, and each of the two auxiliary rollers is rotated with the propeller shaft of the drive motor synchronously.
A belt sander, comprising:
- a sand belt unit including an upper roller, a lower roller located under the upper roller and rotated by a propeller shaft of a drive motor, and two auxiliary rollers located at two sides of the lower roller;
- wherein
- each of the two auxiliary rollers and the lower roller are rotated synchronously;
- the two auxiliary rollers are rotated in the same direction, that direction being opposite to the direction of rotation of the lower roller;
- the sand belt unit further includes a frame to support the lower roller, a support seat located adjacent to and movable relative to the frame to support the upper roller so that the upper roller is movable relative to the lower roller by movement of the support seat relative to the frame to adjust the distance between the upper roller and the lower roller.
Dependencies are inferred from the claim text.