Bobbin paper length measuring device

Abstract

The invention provides a bobbin paper length measuring device. The device comprises a bracket. A paper pay-off roller used for installing to-be-detected bobbin paper and making the to-be-detected bobbin paper release paper gradually and a paper take-up roller synchronously rotating with the paper pay-off roller and used for gradually receiving paper are rotationally assembled on the bracket. The bracket is further equipped with a counting roller which is used for always rotating in contact with paper in the process of paper pay-off and has a rotation speed detection function. During use, the head of the bobbin paper on the paper pay-off roller is fixed to the paper take-up roller, and the paper take-up roller drives the paper pay-off roller to rotate synchronously through paper when rotating. As the perimeter of the counting roller is fixed, the length of paper released is calculated according to a formula: the rotation speed times the perimeter of the counting roller is the length of paper. Thus, length detection of the bobbin paper is completed. According to the device, the length of bobbin paper is measured accurately based on a simple mathematical principle. Measurement is convenient and highly accurate. After measurement, a coil of bobbin paper is reformed on the paper take-up roller. Therefore, length detection is completed, and subsequent use of bobbin paper is not affected.

Description

technical field [0001] The invention relates to a device for measuring the length of paper coils. Background technique [0002] In cigarette enterprises, the cigarette paper used is a kind of coil paper, and the detection of the length of the cigarette paper is a very important test item. The main reasons are, firstly, through the random inspection of the length of cigarette paper, the enterprise can have a clear understanding of the actual length of the cigarette paper, to ensure the interests of the transaction between the enterprise and the material manufacturer, and at the same time to have a clear plan for the use of cigarette paper , Avoid waste of materials and protect the economic benefits of the enterprise. The second is to measure the unit weight of the whole paper by measuring the length of the cigarette paper combined with the weight of the whole paper. The unit weight of the cigarette paper has a certain influence on the quality of the finished cigarette, so th...

AI Technical Summary

Problems solved by technology

[0003] At present, since there is no suitable measuring device for the length of cigarette paper, the length of cigarette paper is usually measured by a common unit weight parameter combined with the weight of cigarette paper. This measurement method has some shortcomings. Firstly, it is due to Due to the water absorption characteristics of cigarette paper, the weight of the whole roll of paper must have increased compared to when it was just shipped from the factory. In addition, the weight of the axis around which paper is wound for different rolls of paper is also different. At this time, only the total weight of the roll of paper is used. It is obviously inaccurate to calculate the length

Secondly, due to the defects of the paper itself, such as breakage, uneven thickness, etc., these defects cannot be actually tested and verified, so that when the paper is relatively thick, its actual length will decrease, so the theoretically calculated length is basically Unable to accurately measure the actual length of the paper

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