High-speed low-noise linear guide rail

The utility model belongs to the technical field of linear guide rails, and discloses a high-speed low-noise linear guide rail which comprises a guide rail body, a sliding block is connected to the top of the guide rail body in a sliding mode, guide grooves matched with the sliding block are formed in the two sides of the guide rail body, and an oil injection hole is connected to the side wall of the sliding block. A sliding block is fixed to the top of the guide rail body, limiting plates are installed on the two sides of the bottom end of the sliding block, a groove is formed in the top of the guide rail body, a sliding strip matched with the groove is fixed to the bottom of the sliding block, and telescopic cylinders are fixed to the sides, close to the guide groove, of the limiting plates. When the sliding block slides back and forth, the sponge cushion can be tightly attached to the inner side of the guide groove, so that when the sliding block moves back and forth, the sponge cushion can clean dust or w