Ceramic microbead forming device

Abstract

The invention discloses a ceramic microbead forming device which comprises two cylindrical roller dies and four supports. The two ends of a rotating shaft of each cylindrical roller die are each rotationally connected with one support, a gear is arranged at one end of each rotating shaft, and an 8-shaped chain is wound around the two gears; a driving device can drive one of the rotating shafts to rotate, a strip-shaped die disc is arranged on the cylindrical side face of each cylindrical roller die, a rubber die disc is connected to each strip-shaped die disc, die holes are formed in the strip-shaped die discs, and cylindrical holes communicated with the die holes in the corresponding strip-shaped die discs are formed in the rubber die discs; the cylindrical holes in the different cylindrical roller dies are in one-to-one correspondence, and every two corresponding cylindrical holes can be matched with each other; and a filling machine is fixedly arranged over each cylindrical roller die, and a ceramic biscuit storage box is arranged between the two cylindrical roller dies. In the using process of the ceramic microbead forming device, the dies are not prone to being damaged, and the service life is long.

Description

technical field [0001] The invention relates to the technical field of ceramic forming, in particular to a ceramic bead forming device. Background technique [0002] Miniature bearings are widely used in industries such as precision instruments, electronics, automobiles, and machinery manufacturing. The required tolerance and durability of miniature bearings are very high. Conventional steel bearings cannot fully meet the requirements of high speed and high precision. Silicon nitride Ceramic balls have excellent characteristics such as light weight, high strength, self-lubrication, electrical insulation, corrosion resistance, and wear resistance, and can still maintain their excellent performance in abnormal environments such as ultra-low temperature and high temperature. Therefore, silicon nitride ceramic bearing balls are comprehensive The material for high-end bearings with the best performance has a much longer service life than steel bearings under harsh working conditi...

AI Technical Summary

Problems solved by technology

[0003] At present, the traditional ceramic microsphere molding process adopts the dry pressing molding technology of the rotary press, and uses the stamping method of the upper mold and the lower mold to produce ceramic balls. The upper and lower molds are both hemispherical. When the rotary press is working, the upper mold and the lower mold The mold makes a circular motion around the axis. At the same time, the two hemispherical molds move towards each other and press the powder in the center. The powder between the upper and lower molds is pressed into a spherical shape. After stamping, the upper and lower molds are separated. The ball is pushed away from the lower mold, and the pressing is completed; but because the mold itself is not strong enough, it is easy to cause curling and mold damage. Although this method has high pressing efficiency and the size of the molded ceramic ball green body is uniform, when producing ceramic balls with a diameter of less than 2mm, due to The edges of the upper mold and the lower mold are relatively thin, and the upper, lower mold and the middle mold cannot be completely fitted due to industrial production reasons. Fine high-strength powder enters between the middle mold and the upper and lower molds, resulting in the edge of the upper and lower molds for making small balls. During the stamping process, the mold is damaged by the inward force of the powder, and frequent mold replacement affects production efficiency

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