Intelligent coating die head, coating device and coating method thereof

Abstract

The invention discloses an intelligent coating die head, a coating device and a coating method thereof. Wherein the coating die head comprises a first die head, a second die head and a plurality of thickness measuring assemblies, and the second die head is fixedly connected with the first die head; the thickness measuring assemblies are arranged on the first die head or the second die head at intervals, and each thickness measuring assembly is suitable for being arranged close to the downstream of the back roller assembly so as to be used for measuring the thickness of a coating coated on the base material. The structure of the coating die head is improved, the control precision of the coating thickness is effectively improved, and then the coating uniformity is improved.

Description

technical field [0001] The invention relates to the technical field of coating machines, in particular to an intelligent coating die, a coating device and a coating method thereof. Background technique [0002] Currently, coating dies provide the function of active substance spraying during the coating process. During the spraying process, the size of the spraying slit can be manually adjusted, and the coating thickness can also be adjusted in a cut-off manner through an electric actuator. In the adjustment process, the closed-loop adjustment function is generally realized by manually observing the thickness measuring equipment or automatically sending the thickness measurement data to the control system. [0003] In the prior art, the coating die and the thickness measuring equipment are set independently, and the thickness measuring equipment adopts a thickness measuring sensor device installed on the top and bottom of the coated thin material, and reciprocates to detect ...

AI Technical Summary

Problems solved by technology

[0004] However, the sampling coverage of existing reciprocating thickness measuring equipment is lower than 5% when the coating speed is higher than 30m / min, and as the coating speed increases, the sampling coverage will further decrease

The communication link between the thickness measuring equipment and the coating adjustment die is too long, which further limits the response time of the coating adjustment

Moreover, since the thickness measuring device is fixed behind the back roller and used to measure the wet film thickness after coating, the belt path from the coating position to the thickness measuring device is long, and each adjustment needs to go through measurement-communication-calculation-adjustment -Waiting time for conveyor to thickness measurement position-The measurement process increases the time of waiting for conveyor belt and communication time in the debugging process, increases the response time of system debugging, which makes the coating die head perform adjustment coating thickness There is a lag in the action of the coating die, the coating thickness adjustment control accuracy of the coating die head is low, and there is still the problem of poor coating uniformity

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