Checkweigher is used for automatic weight detection, upper and lower limit discrimination or weight grading selection on various automated assembly lines and logistics conveying systems. It adopts weighing controller technology, combined with servo motor machine iterative system and elaborate mechanical design, and is specialized in on-line dynamic weighing and classification of products passing through the automated production line. It can realize continuous dynamic checkweighing of products, detect unqualified products, alarm for overweight or light ones, and realize product classification and unqualified product rejection function through the structure of classification and rejection at the back-end.

Checkweigher is a modern equipment to complete the picking, sorting and placing operations in distribution centers, and it is a strong technical guarantee to carry out sorting and distribution operations. It has high sorting capacity and can handle a wide range of goods. When the product enters the "weighing section" of the weight sorter, the weighing system quickly detects the weight of the product and immediately makes a judgment on whether the weight of the product is within the target weight range. If the weight of the product is qualified, it will be transmitted out of the weighing machine without any error, if the weight of the product is not qualified, it will give a delayed signal for rejection. At the same time, the system will automatically record the number of qualified and unqualified products.

Checkweighers give release to the items that pass the test, and to the items that do not pass the weight, either by means of an alarm or by being pushed out of the conveyor belt by the sorting organization. It can replace the manual sampling and testing on the production line, and it can do so for all the items passing through without exception, which is a very suitable measuring equipment for the production of product quality.

The automatic checkweigher is mainly completed by three parts: buffer part, dynamic weighing part and weight sorting part. Buffer section: mainly used for placing products, the speed is a little slower than the last two sections, mainly used as a buffer, so that the products enter the dynamic weighing section at a constant speed. Dynamic weighing: the products are dynamically weighed during the movement of the belt, and the weighing data is fed back to the control system. Weight Sorting Section: According to the weight data fed back from the dynamic weighing section, it determines the sorting action at which level of exit, and executes the rejecting action after the products run to the corresponding rejecting port.

The automatic checkweigher weighs objects in continuous motion, and the dynamic weighing equipment combined with load cells and other parts is not a fully automatic control system with closed-loop control, but a specialized data collection system. It is a specialized data collection system, which solves the problem based on the characteristics and values of the data signals obtained from the dynamic weighing equipment, and separates from them the DC components that are proportional to the quality, and the accuracy caused by the substitution of the specific values by their measured values, which is critically dependent on the influence of the dynamics of the weighing and the dynamics of the weighing system (i.e., the transfer function of the weighing equipment).

The automatic checkweigher consists of weighing conveyor, controller and inlet/outlet conveyor. The weighing conveyor collects the weight signals and sends them to the controller for processing. The in-feed conveyor is mainly used to increase the speed to ensure that there is enough spacing between the products. The outfeed conveyor is used to transport the checked products away from the weighing area.

The automatic heavy machine is generally composed of a control device, a metering and detection machine, an automatic detection machine and a sorting crossing. The function of the control device is to recognize, receive and process the sorting signal, and according to the requirements of the sorting signal, the measurement and detection machine is instructed to automatically classify the goods by the type of goods, by the place of delivery of the goods or by the class of the cargo owner. These sorting needs can be entered into the sorting control system in different ways, such as through barcode scanning, color code scanning, keyboard input, weight detection, voice recognition, height detection and shape recognition, etc., according to the judgment of these sorting signals, to determine which sorting crossing a certain product should enter.

Inspection machine is an automatic weight inspection assembly line equipment, mainly used for dynamic inspection of product weight is up to standard qualified, so as to determine whether the product package is missing parts, product accessories or more loaded overweight and so on. Can be quickly on the production line items for weight inspection or weighing, testing standard weight can be set, real-time display of the test weight and quantity, and display the test results, automatic counting, automatic rejection of substandard products or meet the substandard products when the alarm, can be equipped with a computerized touch-screen, Chinese windows, man-machine interface friendly, easy to operate, classification of daily and monthly reports query printing and other functions.

When the inspection machine passes through the inspection table, the system will judge its weight, detect whether it meets the specified weight requirements, and make qualified, overweight, underweight prompts, or execute the corresponding non-conforming products rejecting action, and push the non-conforming products out of the production line. It has the functions of standard weight detection, counting, alarm and sorting.