Bolt cold header, mould box thereof and correcting and adjusting method for positioning mould

Abstract

The invention discloses a bolt cold header, a mould box thereof and a correcting and adjusting method for positioning a mould. The bolt cold header comprises a machine body, a head sliding block, a mould box and a driving mechanism. In the bolt cold header, the mould and the mould box are separated, the mould placed in the mould box is finely adjusted and positioned and a fine adjusting positioning method is used for positioning and adjusting the mould box, thereby completely and accurately aligning the mould with the head, being accurate in positioning, and being high in quality precision of products and high in yield. The head sliding block is improved and is changed into an opening type head, thereby facilitating the replacement of a mould head. The correcting and adjusting method is also performed on the mould head. The opening type head can be used for greatly reducing the crank axle length of a crank shaft connecting rod, increasing an operating torsion and achieving an excellent effect.

Description

technical field [0001] The invention relates to a bolt manufacturing equipment, in particular to a bolt cold heading machine and a method for aligning and adjusting a mold box positioning mold. Background technique [0002] The basic structure of the existing bolt cold heading machine is composed of the heading slider driven by the crankshaft connecting rod mechanism and the mold box opposite to it. There are corresponding bolt mold holes on the mold box and the heading head, generally three, The bolts are formed by three cold headings. Since it requires three times of cold heading, and the mold hole of each cold heading is different, it is necessary to take out the semi-finished product from the mold hole and put it into another mold hole. ), this kind of cold heading machine is complex in structure, complex in structure, high in failure rate, long in transposition time, and low in work efficiency; there is also a method of using a rotating mold box, through the rotary tra...

AI Technical Summary

Problems solved by technology

Since it requires three times of cold heading, and the mold hole of each cold heading is different, it is necessary to take out the semi-finished product from the mold hole and put it into another mold hole. ), this kind of cold heading machine is complex in structure, complex in structure, high in failure rate, long in transposition time, and low in work efficiency; there is also a method of using a rotating mold box, through the rotary transposition positioning of the mold box, to realize the transformation of the workpiece station , this method not only has high efficiency, but also has a relatively simple mechanical structure. However, there is a problem that has always troubled people, that is, the positioning of the mold box. The error of the corresponding hole, the error of the installation mold and the instability of the mold box lead to a high reject rate of the manufactured bolts, it is difficult to meet the high-density processing, and the product quality is not guaranteed.

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