High-precision automatic roundness screening device and method for micro-particles

An automatic screening, micro-particle technology, applied in chemical instruments and methods, solid separation, separation of solids from solids by air flow, etc., can solve problems such as uncontrollable product quality and low production efficiency

Inactive Publication Date: 2019-01-04
ZHANGJIAGANG CHUANGBO METAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of uncontrollable product quality and low production efficiency of the existing roundness screening device, and to provide a device and method for quickly and accurately selecting the roundness

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0022] Embodiment: screen the sphericity of copper ball, concrete operation steps are as follows:

[0023] 1. Select the first sieve plate with a length of 700mm and a width of 550mm, the second sieve plate with a length of 500mm and a width of 550mm, and the height of the protrusions on both sides of the two sieve plates is 15mm.

[0024] 2. Make the first sieve plate (8) and the second sieve plate (11) be 10° and 20° from the horizontal plane by adjusting the bolts (9) and (10).

[0025] 3. Close the solenoid valve (3), and put copper balls to be screened into the funnel (1).

[0026] 4. Adjust the opening of the solenoid valve (3) so that the flow rate of the copper ball is 1㎎ / s. At this time, the frequency of the pulse gas nozzle is 1Hz, and the gas flow rate is 2L / min.

[0027] 5. The copper balls will flow from the conduit (2) to the nozzle (4), and from the nozzle (4) intermittently flow into the diversion groove (7), and flow into the sieve plate in rows from the dive...

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PUM

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Abstract

The invention discloses a high-precision automatic roundness screening device and method for micro-particles. The device and method are characterized in that to-be-screened micro-particles are placedinto a funnel, the flow of the micro-particles flowing into a nozzle is controlled by controlling the opening degree of an electromagnetic valve, the frequency of pulse airflow in the nozzle is controlled through the flow, the flow of the pulse airflow is controlled through a speed sensor, and thus the whole process is controlled. The micro-particles sprayed out of the nozzle enter a first screening plate through a flow guiding groove, waste falls into a waste trough, and the micro-particles with good roundness enter a second screening plate, flow into an oblique funnel and then fall into a finished product trough through a guide pipe in the funnel. The device and method have the beneficial effects that the efficiency and the finished product rate of original devices are improved to a great extent, and the device is controllable and high in precision.

Description

technical field [0001] The invention belongs to the technical field of preparation of spherical microparticles, in particular to a high-precision automatic screening device and method for roundness of microparticles. Background technique [0002] At present, after spherical microparticles are produced, qualified products need to be selected. Due to the small diameter of the particles, it is difficult to distinguish them with the naked eye. It will consume a lot of time and work efficiency is very low. Therefore, some special equipment is needed to screen the roundness of solder balls and directly reject products with unqualified roundness. [0003] The main indicators of spherical microparticles include: spherical diameter, tolerance control, roundness and oxidation resistance, etc. Screening is a major process involving the roundness rate of particles in the entire process. However, the current particle screening process generally suffers from low screening efficiency, whi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B07B4/08B07B11/02B07B11/04
CPCB07B4/08B07B11/02B07B11/04
Inventor 潘鑫
Owner ZHANGJIAGANG CHUANGBO METAL TECH CO LTD
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