How To Choose A Suitable Checkweigher

The checkweigher is widely used in different industries, including food and beverage industry, cosmetics industry, pharmaceutical biotechnology industry, daily chemical plastics, electronic hardware industry and logistics industry. It can weigh the product during the movement, automatically detect the weight of each product, and compare it with the preset weight standard to ensure the consistency and accuracy of the product weight and reject unqualified products.

When choosing the online dynamic weight inspection machine, factors such as product characteristics, sorting speed, rejection method and maintenance convenience need to be considered. The technical parameters of the checkweigher include maximum load capacity, accuracy and work efficiency, which are important factors to consider when we choose.

1. Product characteristics

The weight load range and weight resolution of the online weight checking machines are important parameters when choosing. The screen technical parameters of the checkweigher will display the load range from 2g to 60kg and the weight resolution from 0.1g to 10g according to the different weights and accuracy requirements of our products. When choosing the checkweigher, the weight and size of the product are the primary considerations, because this directly affects the weighing range and accuracy of the checkweigher. The weight resolution of the checkweigher needs to be able to meet the smallest unit of product weight change to ensure accuracy. For example, for lightweight products, a checkweigher with higher accuracy is required.

2. Sorting speed

When selecting the inline checkweigher machine, the sorting speed must match the speed of the production line to ensure that continuous production is not affected. Different checkweigher models have different sorting speed ranges, usually ranging from dozens of times per minute to hundreds of times per minute. When selecting, we need to consider the actual production speed of the product and the maximum processing capacity of the checkweigher to ensure that the checkweigher can handle the maximum flow on the production line. At the same time, the sorting speed is also affected by the characteristics of the product, such as the shape, size and weight of the product, which will affect the sorting efficiency of the checkweigher. Therefore, when selecting a checkweigher, it should be ensured that its sorting speed can meet the maximum demand on the production line while maintaining a certain degree of flexibility to adapt to different production speed changes.

3. Rejection method

According to the needs of the production line, select an appropriate rejection method, such as push plate, swing rod, air blowing or falling.

When choosing the rejection method of the checkweigher, it is necessary to decide based on the characteristics of the product and the specific needs of the production line. The following are several common rejection methods and their applicable scenarios:

• Air-blowing type: This rejection method is fast and suitable for lightweight packaged products, such as medical gauze, boxed packaged medicines, etc. It uses compressed air as power and is automatically controlled to be suitable for the rejection of small, lightweight products in independent packaging conveyed on narrow conveyor systems.

• Swing arm type: Suitable for bagged products below 1KG, the rejection speed is relatively fast, but there may be incomplete rejection.

• Push rod type: This rejection method has a wide range of applications, is mature and stable, has a fast rejection speed, and is suitable for rejecting products with relatively large weight such as missing bottles and missing parts in packaging boxes.

• Lever type: Suitable for boxed or thicker packaged products, intercepting and rejecting unqualified products through the left and right levers.

• Flip plate type: Suitable for relatively thin products, separating unqualified items by opening the baffle.

• Falling type: Suitable for thin flake products, there will be no rebound phenomenon during the rejection process, but the rejection speed is slow, and the noise is louder when the speed is increased.

• Roller push selection: suitable for large and whole box products, but the rejection speed is slow and not suitable for small packages and soft packaging products.

4. Operational convenience

The intuitiveness and ease of use of the operation interface are also very important, which affects the daily use and maintenance of operators. The data management function can help us track product quality and production efficiency, which is crucial for quality control and subsequent analysis.

If you have more ideas about the selection and application of the inline checkweigher, please click the contact information below or on the right to contact IMMAY. As a professional checkweigher manufacturer, IMMAY's expert team will provide you with personalized solutions and professional technical support to help you choose the checkweigher that best suits your production line needs.