Intermittent transfer coating head and its transfer coating machine capable of precisely positioning the coating length

Abstract

The invention relates to a batch-type transfer coating head capable of accurately positioning coating length and a transfer coating machine adopting the batch-type transfer coating head. The batch-type transfer coating head comprises a controller, a driving roll, a hopper supplying a sizing agent to the driving roll, a back roll used for transferring the sizing agent to a base material by being matched with the driving roll and a transition roll which is arranged in front of the back roll and used for conveying the base material, wherein the back roll is driven by a first driving device, a second driving device is also arranged, the second driving device drives the transition roll to rotate, and the first driving device and the second driving device are electrically connected with a controller. The batch-type transfer coating head capable of accurately positioning coating length has the advantages that the transition roll in the prior art is changed into a transition roll driven by a driving device, the transition roll driven by the driving device is controlled by virtue of the controller, and the transition roll driven by the driving device is controlled to rotate in the same direction or opposite direction with the base material according to a slipping state of the base material (namely the base material stays stationary relative to the back roll or moves at an overhigh speed), so that the phenomenon that the base material slips is avoided and accuracy of the coating length is improved.

Description

technical field [0001] The invention relates to an intermittent transfer coating head capable of precisely positioning the coating length and an intermittent transfer coating machine thereof. Background technique [0002] Existing intermittent transfer coating machine generally comprises four main parts of unwinding mechanism, intermittent transfer coating head, drying oven and winding mechanism, between described unwinding mechanism and intermittent transfer coating head at least There is a transition roller; the intermittent transfer coating head includes a driving roller, a hopper that supplies slurry to the driving roller, and a back roller that cooperates with the driving roller to transfer the slurry to the substrate. The substrate comes out of the unwinding mechanism and passes through The transition roll and the back roll are coated with the slurry by the driving roll at intervals, and then enter the drying oven for preliminary drying. After being dried...

AI Technical Summary

Problems solved by technology

[0003]In some intermittent coating processes, there are high requirements for the length of the coating and the length of the interval between coatings, and some achieve tolerances of less than Plus or minus 0.1 mm, if the tolerance exceeds the range, it will have a very serious impact on the subsequent cutting process, and the problem of cutting off the normal coating sometimes occurs during cutting

[0004]The main reason for the length of the coating and the length of the interval between the coatings is that the substrate is not stable. Roller slippage causing inaccurate lengths of coats and intervals between coats

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