An oil injection ring for drawing copper pipes

Abstract

The invention discloses an oil injection ring for drawing a copper pipe. The oil injection ring comprises a ring body, and a channel is formed in the center of the ring body; a boss is formed at an opening in the front end of the inner wall of the ring body, the inner side surface of the boss is a vertical plane perpendicular to the central axis of the ring body, and the outer side surface of the boss is an inclined plane; an annular oil groove is formed in the outer side of the ring body, oil injection holes are formed in the ring body, one ends of the oil injection holes are opened in the bottom of the oil groove, and the other ends of the oil injection holes are opened in the inclined plane; a first sealing groove and a second sealing groove are formed in the outer side of the ring body, and O type sealing rings are installed in the first sealing groove and the second sealing groove respectively; and a nylon ring is installed in the channel, the rear end of the nylon ring is flush with an opening in the rear end of the inner wall of the ring body, the front end of the nylon ring abuts against the vertical plane of the boss, the nylon ring is in interference fit with the inner wall of the ring body, and the inner diameter of the nylon ring is smaller than the diameter of the channel. According to the oil injection ring, the copper pipe can be comprehensively lubricated, the temperature of a drawing die can be lowered, the outer wall of the copper pipe can be effectively protected, and the product accuracy can be improved.

Description

technical field [0001] The invention relates to an auxiliary tool for drawing copper pipes, in particular to an oil injection ring for drawing copper pipes, and belongs to the technical field of mechanical equipment. Background technique [0002] Copper tubes are frequently used in the fields of air-conditioning condensers and radio frequency transmission cables. When making copper tubes for the above equipment, drawing and forming is an important part of the processing process. At present, when drawing copper tubes, an external force is used to act on the front end of the drawn copper tube, and the copper tube blank is pulled out from the die hole of the mold to obtain a plastic processing method of the corresponding shape and size of the product. Since drawing is mostly carried out in a cold state, it is also called cold drawing or cold drawing. In copper tubing drawing, an emulsion consisting of soap base, borax, polyethylene glycol oleate and water or an emulsion of min...

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Problems solved by technology

[0003] In view of the above-mentioned deficiencies in the prior art, the main purpose of the present invention is to solve the problem of product drop marks caused by uneven lubrication on the surface of the copper tube during the current copper tube drawing process, and to provide a fully Spray ring for copper tube drawing for azimuth lubrication of copper tubes

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