Work flow of automatic checkweigher

Abstract: Online checkweigher is also known as: automatic checkweigher and weight sorting scale. It is a high-speed, high-precision online checkweighing equipment that can be integrated with various packaging production lines and conveying systems. In modern industrial production, especially in the production process of the food and pharmaceutical industries, it has gradually become an indispensable environment.

Online checkweigher is also known as: automatic checkweigher and weight sorting scale. It is a high-speed, high-precision online checkweighing equipment that can be integrated with various packaging production lines and conveying systems. It has gradually become an indispensable link in modern industrial production, especially in the production process of the food and pharmaceutical industries. The online checkweigher measures the weight of the product during the conveying process of the product, and compares the measured weight with the preset range, and the controller sends an instruction to reject products with unqualified weights, or reject products with different weight ranges. The product is distributed to the designated area.

The online checkweigher is generally produced by a weighing conveyor, a controller, and an in-out conveyor. Among them, the weighing conveyor completes the collection of the weight signal, and sends the weight signal to the controller for processing. The feed conveyor mainly increases the speed to ensure that there is sufficient spacing between products. The discharge conveyor is used to transport the tested products out of the weighing area and pass the unqualified products through the automatic rejection mechanism to filter out the conveyor line.

The working process of the online checkweigher is as follows:

1. Weighing preparation The product enters the feeding conveyor, and the speed setting of the feeding conveyor is generally determined by the distance between the products and the required speed. The purpose is to ensure that only one product can be on the weighing platform during the work process of the checkweigher.

2. Weighing process When the product enters the weighing conveyor, the system recognizes that the product to be tested enters the weighing area according to external signals, such as photoelectric switch signals, or internal level signals. According to the operating speed of the weighing conveyor and the length of the conveyor, or according to the level signal, the system can determine the time when the product leaves the weighing conveyor. From the product entering the weighing platform to leaving the weighing platform, the load cell will detect the signal shown in the figure below, and the controller selects the signal in the stable agricultural area for processing, and the weight of the product can be obtained.

3. Sorting process After the controller gets the weight signal of the product, the system will compare with the preset weight range to sort the products. The sorting type will be different according to different applications.

The automatic checkweigher mainly has the following types:

1) Rejection of unqualified products;

2) Eliminate overweight and underweight separately, or transport to different places;

3) According to different weight ranges, they are divided into different weight categories.

Automatic checkweigher report feedback:

Checkweighers have weight signal feedback function. Usually the average weight of a set number of products is fed back to the controller of the packaging/filling/canning machine, and the controller will dynamically adjust the feeding amount to make the average weight of the product closer于target value.

In addition to the feedback function, the checkweigher can also provide a wealth of report functions, such as the packaging quantity per zone, total volume per zone, qualified quantity, qualified total, average, standard deviation, total quantity and total accumulation.

Checkweigher application

The online checkweigher can be applied to various industries, such as various industries such as food, medicine, chemical industry, beverage, plastic, rubber and so on.