Sliding type spring stamping die ejecting mechanism

Abstract

The invention relates to a sliding type spring stamping die ejecting mechanism. The sliding type spring stamping die ejecting mechanism comprises a die sleeve, wherein a lining plate is arranged on the end surface of one side of the die sleeve; a spring pad is arranged on the lining plate in the die sleeve; a spring is arranged on the spring pad; an alloy stamping die is arranged at the top end of the spring; a stamping die step is arranged on the alloy stamping die; a die sleeve step is arranged in the die sleeve; the stamping die step is matched with the die sleeve step in use; a molding hole is formed in the alloy stamping die; an ejector pin and an ejector pin hole, which is for receiving the ejector pin, are formed in the molded hole in the alloy stamping die; the ejector pin hole is a countersunk head hole; the countersunk head depth of the ejector pin hole is consistent with the height of the head part of the ejector pin; a material returning rod hole is formed in the middle of the spring pad; a material returning rod is arranged in the material returning rod hole; an ejecting rod hole is formed in the lining plate below the material returning rod hole; and an ejecting rod is arranged in the ejecting rod hole. Therefore, the advantages of a spring stamping die can be kept; a defect that the spring stamping die contains materials is solved; follow-up correction or re-machining procedure can be avoided because no die pulling inclination is caused; the rejection rate is reduced; the product quality is improved; and the production speed is increased.

Description

technical field [0001] The invention relates to an ejection mechanism of a mold, in particular to a sliding spring die ejection mechanism. Background technique [0002] At present, cold heading technology is often used in the machinery manufacturing industry, and spring dies in cold heading technology are widely used, such as figure 1 There is no stripping rod in the spring die as shown, and the height L5 from the bottom of the forming hole 9 to the bottom of the alloy die is equal to the total length L6 of the thimble 2, so the thimble 2 will not eject the workpiece. The use of spring dies for upsetting will not cause longitudinal bending and crease defects, and can also increase the upsetting length, and can increase the upsetting length to about 8 times the diameter. However, in the upsetting workpiece with a high head and a straight section When, or the rod of the product is short, there will be material in the spring die (commonly known as the phenomenon of material), ...

AI Technical Summary

Problems solved by technology

The use of spring dies for upsetting will not cause longitudinal bending and crease defects, and can also increase the upsetting length, and can increase the upsetting length to about 8 times the diameter. However, in the upsetting workpiece with a high head and a straight section When, or the product rod is short, there will be material in the spri

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