Cold extrusion die of hexagonal locknut with pad

Abstract

The invention discloses a cold extrusion die of a hexagonal locknut with a pad. The cold extrusion die comprises a die handle (1), an upper die subplate (3), an upper fixing plate (4), a die sleeve (5), a lower fixing plate (6), an upper convex die (11), a lower convex die (13), a guide column (14), left and right support plates (10) and a hit stick (9), wherein the left and the right support plates (10) are respectively arranged at the left side and the right side of the upper die subplate (3), the upper fixing plate (4) and the die sleeve (5), fixed with the upper die subplate (3) and movably connected with the die sleeve (5); a stepped hole on the upper fixing plate is coaxial and communicated with a cavity of the die sleeve, the upper convex die (11) is in sliding fit in the stepped hole (4.1) and the cavity (5.1), and a spring (12) is arranged between a step of the upper convex die (11) and a step of the stepped hole (4.1); and the hit stick (9) is in sliding fit on the die handle (1) and the upper die subplate (3), and the bottom end surface of the hit strike is attached with the top end surface of the upper convex die (11). The cold extrusion die is easy to demould.

Description

technical field [0001] The invention relates to a cold extrusion die, more specifically to a cold extrusion die for producing semi-finished products of hexagonal nuts with cushions. Background technique [0002] Pad lock hex nuts are widely used in industry. When processing the anti-loosening hexagon nuts with pads, the raw materials are processed to form semi-finished products of anti-loosening hexagonal nuts with pads, and then the semi-finished products of double-head pipe joints are processed into internal threads to form finished products. At present, there are two kinds of production techniques for the semi-finished product of the anti-loosening hexagonal nut with pads: one is to carry out sand casting to form a pile blank, and then the pile blank is cut and processed into a semi-finished product with a hexagonal nut with a padded anti-loosening nut. This kind of production method of anti-loosening hexagon nuts with pads has the following defects: in the process of cu...

AI Technical Summary

Problems solved by technology

This kind of production method of anti-loosening hexagon nuts with pads has the following defects: in the process of cutting the blanks into semi-finished products with anti-loosening hexagon nuts with pads, excess material must be cut off, and the cutting process is time-consuming, which affects production efficiency; in addition, raw materials Sand holes, slag inclusions and other defects are prone to occur during sand foundry casting, which affects product quality; 2. Directly process large-diameter seamless steel pipes, so that the waste of raw materials is quite large, and the cutting process takes a lot of time, which increases production costs. Reduced economic benefits

Although the cold extrusion die with this structure can process the semi-finished products of hexagon nuts with pad lock nuts, it is difficult or even impossible to demould the products after molding, resulting in low production efficiency

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