Patent ID: 6454052
Filing Date: 2002-09-24
Classification: F16N

Abstract:
A lubrication device adapted to be used in a punching machine, comprising:a hollow workpiece-guiding unit defining an interior chamber therein and adapted to be disposed on the punching machine, the workpiece-guiding unit having a plate passage unit for extension of a horizontal metal plate therethrough, the plate passage unit being in fluid communication with the interior chamber in the workpiece-guiding unit; an oil feeding assembly for supplying lubricating oil into the workpiece-guiding unit; and a compressed-air supplying unit for supplying compressed air to combine with the lubricating oil so that the lubricating oil is trained on the compressed air to form an oil gas, which flows into the interior chamber in the workpiece guiding unit and onto top and bottom surfaces of the metal plate; the workpiece-guiding unit is shaped as a hollow rectangular casing, and includes two aligned horizontal rows of oil-gas spraying units, the rows being disposed respectively in upper and lower end portions of the interior chamber in the workpiece-guiding unit, each of the oil-gas spraying units including: a tubular body having a vertical central bore that is formed therethrough, the oil feeding assembly including an oil passage that is formed in the tubular body and that is in fluid communication with the central bore for supplying the lubrication oil into the central bore, the compressed-air supplying unit including an air passage that is formed in the tubular body and that is in fluid communication with the central bore, in which the lubrication oil combines with the compressed air to form the oil gas, the central bore having an air entrance end and a gas exit end; a nozzle unit confined within the air entrance end of the central bore in the tubular body, and having an air inlet that is in fluid communication with the air passage unit, and an air outlet that is directed toward the gas exit end of the central bore for supplying the compressed air into the central bore through the air outlet; and a gas spraying member confined in the gas exit end of the central bore, and having a gas outlet that is adapted to be directed toward the metal plate, thereby permitting flow of the oil gas from the central bore and through the gas outlet.