Forging die capable of achieving automatic positioning and cooling

Abstract

The invention discloses a forging die capable of achieving automatic positioning and cooling. The forging die comprises a male die, a female die and an ejection mechanism. The male die is provided with a first drive device and located over the female die and can stretch into the female die. The ejection mechanism can be inserted in the lower end of the female die in a sliding manner so that an opening in the lower end of the female die can be closed. The forging die further comprises two positioning mechanisms which are symmetrically arranged in the horizontal direction. The positioning mechanisms comprise a positioning rod capable of conducting horizontal feeding in the axial direction, and the positioning rod is provided with second drive devices. The two opposite side walls of the female die are provided with two positioning holes for the positioning rod to penetrate. Runners for cooling water to flow are further arranged on the side walls of the female die; and the two ends of each runner are provided with a water inlet and a water outlet correspondingly, wherein the water inlets and the water outlets communicate with an external water tank. By means of the forging die, a forge piece can be automatically positioned before forging, the die can be automatically cooled after forging, and therefore the forge piece can be accurately and rapidly positioned and discharged without errors.

Description

technical field [0001] The invention relates to the field of forging, in particular to a forging die capable of automatic positioning and cooling. Background technique [0002] In the prior art, the position of the hot billet in the mold is positioned by mechanical operation and manual visual inspection before forging, so as to reduce the probability of material deviation or dumping as much as possible. After the forging is completed, the forging needs to be taken out of the mold. [0003] The main disadvantages of locating the position of the hot blank in the mold by mechanical operation and manual visual inspection are as follows: First, it takes a long time. Closed die forging is also called flashless die forging, which belongs to near-net shape, and the shape of the blank is required to be reasonable during forging. And it can be accurately positioned in the die cavity. When the cross-sectional size of the blank is much smaller than the cross-sectional size of the concav...

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Problems solved by technology

[0003] The main disadvantages of locating the position of the hot blank in the mold by mechanical operation and manual visual inspection are as follows: First, it takes a long time. Closed die forging is also called flashless die forging, which belongs to near-net shape, and the shape of the blank is required to be reasonable during forging. And it can be accurately positioned in the die cavity. When the cross-sectional size of the blank is much smaller than the cross-sectional size of the concave mold cavity, it is prone to material deviation or pouring. Manual positioning requires repeated operations and positioning, which often takes more than a few minutes. As we all know, The higher the billet temperature within a certain range, the better the plasticity and the lower the deformation resistance. During the long-term positioning process, the billet is in contact with air and other media, the billet temperature decreases, the plasticity deteriorates and a large amount of scale is formed. If the billet cannot be positioned accurately , the light ones cause forging defects or even scrapping, and the serious ones damage the mold; second: personal safety cannot be guaranteed, the blank temperature during hot forging is as high as 1000 ℃, operators work in a high temperature environment for a long time, prone to safety accidents

[0004] When the forging is taken out of the mold, the contact time between the high-temperature blank and the mold is longer, and the temperature of the inner ring of the die will rise rapidly during forging, resulting in the annealing of the mold so that the strength of the mold is reduced, and it is easy to aggravate the mold in a complex stress environment. The failure of the mold, the mold temperature is too high, it is easy to stick to the high temperature forging, and the ejector mechanism cannot eject the forging smoothly, which requires demoulding, which greatly reduces the production efficiency. Before entering the next cycle, the mold needs to be cooled to a certain temperature , the air cooling time is slow and the production efficiency is low

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