Mechanism powder forming machine and quantitative oil supply system

Abstract

The invention provides a quantitative oil supply system and a mechanical powder forming machine. The quantitative oil supply system comprises an ejecting oil cylinder, a quantitative oil cylinder, a first electromagnetic reversing valve, a second electromagnetic reversing valve and a third electromagnetic reversing valve, wherein a piston rod of the quantitative oil cylinder is provided with an adjusting nut, a rodless cavity oil port of the ejecting oil cylinder is divided into two branches, the first branch passes the second electromagnetic reversing valve and then is connected to a rod cavity oil port of the quantitative oil cylinder, the second branch is connected to the third electromagnetic reversing valve, the rod cavity oil port of the quantitative oil cylinder is connected with the first electromagnetic reversing valve, a P1 port of the first electromagnetic reversing valve and a P3 port of the third electromagnetic reversing valve are combined into one path through a pipe, then the combined path is connected to an oil output port of an oil pump, a B2 port of the second electromagnetic reversing valve is communicated with a B1 port of the first electromagnetic reversing valve, and a T2 port of the second electromagnetic reversing valve and a B3 port of the third electromagnetic reversing valve are both sealed. The invention further provides an underscouring rebouncing and filling device of the mechanical powder forming machine including the quantitative oil supply system, and the underscouring rebouncing and filling device has the advantages of being simple in structure, convenient to operate and high in operation accuracy.

Description

technical field [0001] The invention relates to a powder forming machine, in particular to a mechanical powder forming machine and a quantitative oil supply system. Background technique [0002] During the forming process of the powder forming machine, the first punch and the second lower punch are compressed by force, and the lower punch is subjected to a pressure of about 6-6.5T per square centimeter. For example, the shortening of the lower punch is 3.5-4 / 1000mm. The length of the punch is different, so the shortening amount is different. For example, the length of the first punch 102 is 100mm, the length of the second punch 101 is 300mm, the shortening amount of the first punch 102 is 0.35mm, the shortening amount of the second punch 101 is 1.05mm, and 0.7mm after elastic recovery At this time, the upper surface of the second lower punch fits with the step on the lower surface of the product, while the upper surface of the first lower punch and the shoulder surface of th...

AI Technical Summary

Problems solved by technology

[0002] During the forming process of the powder forming machine, the first punch and the second lower punch are compressed by force, and the lower punch is subjected to a pressure of about 6-6.5T per square centimeter. For example, the shortening of the lower punch is 3.5-4 / 1000mm. The length of the punch is different, so the shortening amount is different. For example, the length of the first punch 102 is 100mm, the length of the second punch 101 is 300mm, the shortening amount of the first punch 102 is 0.35mm, the shortening amount of the second punch 101 is 1.05mm, and 0.7mm after elastic recovery At this time, the upper surface of the second lower punch fits with the step on the lower surface of the product, while the upper surface of the first lower punch and the shoulder surface of the product produce a gap of 0.7mm, and the product is released through the female mold downward. When the movement is realized, there will be a huge friction force between the inner wall of the female mold and the side wall of the product when the mold is released. Since only the second punch in the center of the lower surface of the product is used as a support, the friction force forms a force arm, thereby breaking the product when the mold is released. , causing the product to be scrapped, thereby increasing the production cost. In order to solve the above problems, our company has designed a corresponding undershoot rebound device. In order to accurately control the rebound height of the device, to compensate for the different compression of the undershoot clearance while providing an oil supply system that precisely controls the amount of oil supplied

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