Method and system for measuring volume circumference of a dry laminating machine

Abstract

The embodiment of the present invention provides a method and system for measuring roll circumference of a dry laminating machine. The method includes: obtaining the system constant of the dry laminating machine; waiting for the system to enter the pre-tension state, measuring and obtaining the monitoring time of the roll to be tested; based on the According to the constants of the drying compound machine system and the monitoring time, the perimeter of the roll to be tested is obtained. The embodiment of the present invention pulls the pendulum roller from the origin to the middle position by reversing the roll. The length of the material is constant. When the system is pre-tensioned, the circumference of the roll can be measured, which ensures the stable start of the tension of the dry laminating machine system. , greatly reduce the phenomenon of wrinkling, air bubbles and weak bonding of the finished product of the dry compounding machine, and greatly increase the yield of finished products.

Description

technical field [0001] The invention relates to the technical field of printing processing, in particular to a roll circumference measuring method and system for a laminating machine. Background technique [0002] The dry laminating machine belongs to the post-press processing equipment for flexible packaging, and is mainly used for two-layer or multi-layer dry lamination of paper / plastic, plastic / plastic, aluminum / plastic and other flexible packaging materials. The dry compounding process is to fully dry the solvent in the glue solution by heating and exhausting after the glue is applied, and then compound. Defects such as air bubbles, wrinkles, and weak bonding often appear in dry composite products. An important factor causing these defects is unstable tension. The reel part of the dry compounding machine system involves 2 unwinding and 1 rewinding, such as figure 1 shown. For the constant tension control of the material roll, the roll circumference calculation is an i...

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Problems solved by technology

The disadvantages of this method are: (1) the operator uses a tape measure to wrap the roll to measure the circumference value, and there is an error; (2) the operation is inconvenient, which increases the workload of the operator, especially for the measurement of the large roll diameter. The measurement error may be even greater; (3) It is necessary to manually measure the circumference of the material roll before each start-up, and it is impossible to guarantee that the measurement is correct every time

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