Control method for automatic weighting of metal powder

A metal powder, automatic weighing technology, applied in the direction of weighing, automatic feeding/discharging weighing equipment, measuring devices, etc. Simple control method and cost reduction effect

Inactive Publication Date: 2010-01-06
NINGBO UNIV
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  • Abstract
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Problems solved by technology

For this reason, in recent years, many new technologies and methods have emerged in the research of automatic weighing and related technologies, such as: (1) A new type of dynamic quantitative weighing based on neural network technology as the control core and multi-factor coordination Control method; (2) According to the principle of dynamic measurement, adopt a bus-based real-time, intelligent and networked dynamic weighing system; (3) Ut

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  • Control method for automatic weighting of metal powder
  • Control method for automatic weighting of metal powder

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Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0023] As shown in the figure, a control method for automatic weighing of metal powder includes the following steps:

[0024] (1), the storage hopper 2 is arranged on the top of the weighing hopper 1, the screw feeding mechanism with the feeding direction consistent with the direction of gravity is set in the storage hopper 2, the weighing sensor 5 is connected on the weighing hopper 1, and A discharge valve 11 is set on the outlet of the weighing hopper 1, and a conveyor belt 7 is set under the weighing hopper 1. The conveyor belt 7 is driven by the transmission drive motor 8, and then the transmission drive motor 8, the feeding drive motor 3, and the weighing sensor 5. The unloading valve 11 is electrically connected to the control system (not shown in the figure) respectively;

[0025] (2), initialize the control system;

[0026] (3) Set ...

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Abstract

The invention discloses a control method for automatic weighting of metal powder, which has the advantages that the rotation speed of a feeding and driving motor is controlled by an improved proportion pulse width speed adjusting and control method, thus when the actual weight value of the metal powder in a weighting hopper is small, the rotation speed of the feeding and driving motor is high, and the feeding speed of the feeding and driving motor to the weighting hopper is high; when the actual weight value approaches to a target value; the rotation speed of the feeding and driving motor is low, and the feeding speed of the feeding and driving motor to the weighting hopper is low; the speed change of the feeding and driving motor is continuous, and the efficiency and the precision for feeding are both considered; a single microcomputer control system is adopted for the control system, so that the control method is relatively simple, and the cost is simultaneously reduced; in addition, as the feeding direction and the gravity direction of a screw feed mechanism arranged in a material storage hopper are consistent, the self gravity action of the metal powder is utilized while feeding, the uniformity and the stability for feeding are improved, and the system for achieving the whole control method is relatively simple.

Description

technical field [0001] The invention relates to a weighing method of metal powder, in particular to a control method for automatic weighing of metal powder. Background technique [0002] Powder metallurgy parts are made from metal powder through forming, sintering and necessary subsequent treatment. The performance of powder metallurgy parts is directly related to its density, and its density depends on the weight of metal powder added to the forming mold when sintering parts. Therefore, the efficiency and accuracy of metal powder weighing have a great impact on the quality, manufacturing efficiency and Cost has an important impact. For this reason, in recent years, many new technologies and methods have emerged in the research of automatic weighing and related technologies, such as: (1) A new type of dynamic quantitative weighing based on neural network technology as the control core and multi-factor coordination Control method; (2) According to the principle of dynamic m...

Claims

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Application Information

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IPC IPC(8): G01G13/285G01G13/295B22F3/00
Inventor 李国富张锋于光临胡浙良刘军胡利永
Owner NINGBO UNIV
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