On-line detection method and system suitable for sealing performance of flexibly packaged food, and medium

Abstract

The invention provides an on-line detection system suitable for the sealing performance of soft package food. The on-line detection system comprises: a servo motor, wherein the servo motor is used for measuring the downward pressure F for a detected soft package; and a grating ruler position encoder which is used for measuring the pressing stroke L of the measured flexible package. The servo motor drives the lower pressing plate to press the flexible package to be detected, and when the lower pressing plate starts to make contact with the flexible package to be detected, the servo motor and the grating ruler position encoder are used for measuring the downward pressing force F borne by the flexible package to be detected and the downward pressing stroke L so as to monitor the sealing performance of the flexible package to be detected on line. According to the online detection method and system suitable for the sealing performance of the flexible packaging food, the sealing performance of the flexible packaging bag can be analyzed in a rapid qualitative and accurate quantitative mode, high operability is achieved, the method and system can be directly integrated into a food packaging production line for use, online detection is achieved, and the detection efficiency and the detection effect are obviously superior to those of a traditional laboratory adopting a vacuumizing detection method.

Description

technical field [0001] The invention relates to the technical field of food packaging airtightness detection, in particular to an online detection method, system and medium suitable for the airtightness of soft-packaged food. Background technique [0002] Food packaging is divided into many types, among which composite plastic film flexible packaging is the largest packaging type in the market. This kind of composite film packaging food production line requires high efficiency. In the past, the inspection of packaging airtightness mainly relied on visual inspection, pressing, and kneading inspection by quality inspectors. It was impossible to achieve 100% full inspection, and pinhole defects were difficult to judge by humans. Unqualified food that is missed is easily deteriorated and damaged during transportation, storage, and sales, which greatly affects customer experience and causes serious reputation loss to food processing plants. The sealing of food packaging is a key...

AI Technical Summary

Problems solved by technology

However, the above-mentioned detection schemes all need to establish a vacuum environment. This process takes at least a few minutes, the detection efficiency is very low, and the test is offline, which cannot be embedded in the food processing production line for online use.

[0004] After searching, the patent document CN212059266U discloses a food packaging seal detection device, including a transparent barrel, the mouth of the transparent barrel is detachably connected with a support frame, and a pressure bar is slidingly provided on the support frame. The upper end is provided with a sliding limit block, the lower end of the pressure rod slides and is provided with an adjustment slide rod, the inner rotation of the pressure rod is provided with a screw rod, and the inner wall of the adjustment slide rod is provided with an internal thread. At this time, pour clear water into the transparent bucket, put the food packaging bag into the transparent bucket, and judge whether the sealing performance of the food packaging bag is good by squeezing the food packaging bag to observe whether there are bubbles. The disadvantage of this prior art is that Use the method of injecting clear water into the transparent bucket to test the tightness, which will increase the operating cost, and there are many uncontrollable factors in the underwater environment

The most important thing is that the test time of this detection method is too long, it is difficult to popularize and apply in the food packaging production line

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