Structural Analysis of Automatic Weighing Machine
The following will introduce the structure analysis of automatic weighing machine for you: automatic weighing machine is composed of conveyor (measurement part), load cell, display control system and other parts. 1. Conveyor Conveyor is composed of conveying device and weighing unit. There are many forms of conveyors, and the belt type, chain type or roller type can be selected according to the form of the conveyed object. The size of the conveyor depends on the size of the object being weighed. The automatic weighing machine weighing table itself is a single small conveyor, and the item to be weighed is weighed at the moment when it passes through the conveyor. Due to dynamic metering, the metering speed is high. The transmission part of the conveyor adopts a three-in-one electric drum (that is, the motor, the reducer and the roller are integrated), which can make the weighing platform compact in structure, reasonable in layout and beautiful in appearance. 2. Load cell There are also various forms of load cell, such as: differential transformer type, resistance strain type and electromagnetic balance type. The precision series automatic weighing machine adopts the resistance strain sensor which is widely used. The advantages are low price, many product types and good stability. The weighing platform formed by the conveyor is placed on the sensor, and the number of sensors used is determined according to the size of the weighing platform. The large-weight and large-sized table is supported by 4 sensors, which has stable and reliable performance; the small-scale and small-sized table can be used. Use a single sensor to support the table. 3. The display control amplifies, calculates and displays the weight signal sent by the weighing sensor, digitally displays the weight value, and compares the weight data with the preset value, and then sends out underweight, overweight, and qualified control signals. Underweight and overweight thresholds can be set manually. The display control instrument can display gross weight, net weight, the last weighing value, the difference between the last weighing value and the set nominal value. It can also display the total number of weighing pieces, the number of underweight pieces, the number of overweight pieces, and the number of qualified products. The display control system can also deliver a variety of statistical information, and the useful information can be networked to the management computer through the communication interface or printed out through the printer. 4. Rejection device (optional) The manufacturer of the checkweigher machine tells you that according to the packaging form and characteristics of the items to be inspected, the rejection device can be divided into various methods such as pushing out, tipping and falling, handling, and diversion. Items are excluded from the production process.
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