Compound die of automatic nail making machine of peel type rivets

Abstract

The invention relates to a compound die of an automatic nail making machine of peel type rivets. The compound die comprises a die seat, die cores, a die cover and a spring, wherein one end of a seat body of the die seat is provided with a cross groove, and the other end of the seat body is provided with a positioning groove; the four outer ends of the bottom of the cross groove are respectively provided with a groove; all the grooves are respectively provided with a spring hole; one end of each spring is arranged into the spring hole; four die cores are respectively embedded in the cross groove and can move radially; bosses are arranged on the die cores and abut against the other ends of the springs; the die cover is fixed at the outer end of one end of the die seat provided with the cross groove, and abuts against the die cores. The compound die has the advantages that a main die of the nail making machine can be manufactured into the compound die with four telescopic surfaces of the die cores, and the square shape of the part of a nail head of a nail core can be guaranteed definitely, so that the uniformity of four flaps after riveting is guaranteed, the quality of the peel type rivets is improved, the scrapped quantity is reduced and the cost is saved.

Description

technical field [0001] The invention relates to a mold for an automatic rivet making machine, in particular to a composite mold for a flower-shaped automatic rivet making machine, which belongs to the technical field of mechanical processing. Background technique [0002] Row-shaped rivets are one of the most widely used new rivets in the market at present. This rivet is widely used in soft materials such as automobiles, telecommunications, rubber, cardboard, etc., and the market demand is very large. [0003] However, the processing of rivet rivets is relatively complicated, especially the four petals of flowering should be uniform, so the requirements for the shape of the mandrel of the rivet rivet are relatively high, and the square diagonal corners of the mandrel head should be equally divided. At present, the main mold of the general nail making machine, due to the limitations of the nail making machine, the nail molds are Haval molds with two sides, and the nail cores ...

AI Technical Summary

Problems solved by technology

[0003] However, the processing of flower-shaped rivets is relatively complicated, especially the flowering four petals should be uniform, so the requirements for the shape of the nail core of the flower-shaped rivet are relatively high, and the square diagonal corners of the nail core head should be equally divided.

At present, the main mold of the general nail making machine, due to the limitations of the nail making machine, the nail molds are Haval molds with two sides, and the nail cores produced are mostly prismatic, with poor precision, difficult to control the quality, and the nail molds are easy to wear , so that the mandrel has a large amount of scrap, which is not suitable for mass production

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