Rapid nondestructive detection apparatus of vacuum degrees of containers, and detection method thereof

Abstract

The invention discloses a rapid nondestructive detection apparatus of the vacuum degrees of containers. The apparatus comprises a conveyer, a detection module, a control processing module and a rejecting device; the conveyer is used for conveying a container to be detected; the detection module is used for enabling the container to be detected to emit an electromagnetic pulse signal, and picking a sound generated by the electromagnetic pulse signal; the control processing module is used for processing sound data to obtain the examination data of the container to be detected, and compares the examination data with qualified standard data to determine that whether the vacuum degree of the container to be detected is qualified or not; and the rejecting device is used for ejecting defective containers. The invention also provides a rapid nondestructive detection method of the vacuum degrees of the container. The apparatus and the method can realize the accurate, rapid and nondestructive detection of the vacuum degrees of the containers of canned and bottled food beverages in the production line, and the rejection of defective containers.

Description

Technical field [0001] The invention relates to a rapid non-destructive detection equipment and a detection method for the vacuum degree of a container, in particular to a vacuum degree detection equipment and a detection method on a food and beverage production line packed in cans, glass bottles and glass bottles. Background technique [0002] Canned and bottled food and beverages (pop cans, glass bottles, glass bottles) are one of the food and beverages that can be stored for a long time in daily life. To ensure that the internal food and beverages do not deteriorate during long-term storage, the vacuum in the container used ( Positive pressure or negative pressure) must reach a certain value. After exhausting, a well-sealed container must maintain a certain degree of vacuum. The significance is: ①Prevent discoloration and oxidation of the container to reduce nutrient loss; ②Slow down the corrosion of the inner wall of the container, avoid container deformation and fake fat; ③A...

AI Technical Summary

Problems solved by technology

It is only suitable for single-container detection, and cannot complete a group of container detection at the same time, and the detection speed is slow, and it is easily affected by the audio frequency interference of the workshop environment, and is greatly affected by the surface of the cover, which limits the practical application.

[0009] Eddy current method: Use the principle of eddy current distance measurement to measure the elastic deformation of the container cover and then convert it to the vacuum degree. There are factors such as measurement error correction and external vibration that affect the accuracy

[0010] In short, the direct measurement method of the vacuum gauge, the manual inspection method, and the visual method of the deformation of the can lid are low in efficiency and extremely poor in reliability; the use of the audio frequency test method and the optical method is limited; the eddy current method is used in the automatic measurement of the production line, and the error is large

The above method cannot be used for high-speed dynamic detection in canned and bottled food and beverage production plants after packaging or on conveyor belts before leaving the factory

[0011] With the improvement of domestic living standards, consumers pay more and more attention to quality, and the widespread use of automated production lines makes the vacuum detection of containers in the canned and bottled food and beverage production industry unable to meet the substantial increase in productivity. Production companies often distort due to vacuum judgments. Leading to unnecessary rework of finished products and large economic losses

[0012] To sum up, there is currently a lack of accurate, fast and non-destructive testing equipment for canned and bottled food and beverage containers on the production line

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