A pressing device for sanding machines is connected to a sanding machine with a transversal frame, at least one transmitting group, and at least one transmission belt, and the pressing device has a holding frame, a pressing frame, a synchronization set, and an auxiliary set. The holding frame is securely connected to the transversal frame to locate in an inner side of the at least one transmission belt. The pressing frame is securely connect to the holding frame to locate in the inner side of the at least one transmission belt, and has multiple rollers deposited on a bottom of the pressing frame and extending toward a lower half of the at least one transmission belt. The rollers of the pressing frame selectively abut the at least one transmission belt to rotate with the at least one transmission belt and to provide a pre-pressing force.

A polishing apparatus which can efficiently polish an entirety of a back surface of a substrate, with the back surface facing downward, is disclosed. The polishing apparatus includes: a substrate holder configured to rotate the substrate; a polishing head configured to polish the back surface of the substrate; a tape advancing device; and a translational rotating mechanism configured to cause the polishing head to make a translational rotating motion. The substrate holder includes a plurality of rollers which are rotatable about their own axes. The plurality of rollers have substrate-holding surfaces capable of contacting a periphery of the substrate. The polishing head is disposed below the substrate-holding surfaces. The polishing head includes a polishing blade configured to press the polishing tape against the back surface of the substrate, and a pressing mechanism configured to push the polishing blade upward.

The present invention comprises a Grinding or sanding machine for grinding or sanding a surface of a workpiece (8), wherein the grinding or sanding machine has at least one transportation device for transporting a workpiece (8) in a transportation direction; at least one revolving grinding or sanding belt (2); and at least one pressure beam (12) for exerting a pressure in the direction of the transportation device on the grinding or sanding belt (2),
wherein a plate (14) which is mounted so as to be movable in a plane that is perpendicular to the direction of the exertable pressure is disposed between the grinding or sanding belt (2) and the pressure beam (12).

The present invention comprises a Grinding or sanding machine for grinding or sanding a surface of a workpiece (8), wherein the grinding or sanding machine has at least one transportation device for transporting a workpiece (8) in a transportation direction; at least one revolving grinding or sanding belt (2); and at least one pressure beam (12) for exerting a pressure in the direction of the transportation device on the grinding or sanding belt (2),
wherein a plate (14) which is mounted so as to be movable in a plane that is perpendicular to the direction of the exertable pressure is disposed between the grinding or sanding belt (2) and the pressure beam (12).

An oscillating device of a belt sander is disclosed. The belt sander includes a base, a rotating unit, an oscillating unit, and a control unit. The rotating unit is disposed on one side of the base. The rotating unit includes a motor and a roller. The oscillating unit is disposed on the other side of the base. The oscillating member includes a rolling wheel and an electric motor. The motor and the electric motor drive the roller and the rolling wheel to rotate, and the control unit controls the oscillation frequency of the electric motor. The service life of the motor and the electric motor can be prolonged, thereby improving the working efficiency of the belt sander.

An oscillating device of a belt sander is disclosed. The belt sander includes a base, a rotating unit, an oscillating unit, and a control unit. The rotating unit is disposed on one side of the base. The rotating unit includes a motor and a roller. The oscillating unit is disposed on the other side of the base. The oscillating member includes a rolling wheel and an electric motor. The motor and the electric motor drive the roller and the rolling wheel to rotate, and the control unit controls the oscillation frequency of the electric motor. The service life of the motor and the electric motor can be prolonged, thereby improving the working efficiency of the belt sander.

The invention relates to a press-on element 1 for an abrasive belt 30, in particular for wide belt grinding machines, consisting at least of a backing material 10 with a padding 3 and a sliding layer 4. To clearly improve the grinding results, a method and a press-on element 1 based thereon are employed which permits an additional cooling of the padding 3 and thereby the abrasive belt 30. The press-on element 1 here substantially consists of a padding 3 consisting of a spacer fabric. The spacer fabric is manufactured from two loosely woven textile surfaces which are connected to each other by pile threads so that the cooling medium can flow through the padding 3.

The invention relates to a press-on element 1 for an abrasive belt 30, in particular for wide belt grinding machines, consisting at least of a backing material 10 with a padding 3 and a sliding layer 4. To clearly improve the grinding results, a method and a press-on element 1 based thereon are employed which permits an additional cooling of the padding 3 and thereby the abrasive belt 30. The press-on element 1 here substantially consists of a padding 3 consisting of a spacer fabric. The spacer fabric is manufactured from two loosely woven textile surfaces which are connected to each other by pile threads so that the cooling medium can flow through the padding 3.

This invention presents a water-cooled sanding table that uniquely integrates a cooling and thermal energy reclamation system. It features a motor-driven sanding belt, a compressor-regulated cooling system with a water tank, evaporator, and condensing coils, alongside an aluminum plate for direct heat transfer from the sanding process. This setup not only prevents heat damage to both workpiece and sanding belt, allowing for higher speed operations without damage, but also captures and repurposes the generated thermal energy. The expelled heat can be utilized for heating spaces or water, showcasing the invention's contribution to energy efficiency and sustainability. This system's ability to enhance processing quality while conservatively managing energy exemplifies a significant advancement in the field.

This invention presents a water-cooled sanding table that uniquely integrates a cooling and thermal energy reclamation system. It features a motor-driven sanding belt, a compressor-regulated cooling system with a water tank, evaporator, and condensing coils, alongside an aluminum plate for direct heat transfer from the sanding process. This setup not only prevents heat damage to both workpiece and sanding belt, allowing for higher speed operations without damage, but also captures and repurposes the generated thermal energy. The expelled heat can be utilized for heating spaces or water, showcasing the invention's contribution to energy efficiency and sustainability. This system's ability to enhance processing quality while conservatively managing energy exemplifies a significant advancement in the field.