Coating device

Abstract

To provide a coating device capable of cancelling shocks and improving the quality accuracy of a coating film thickness.SOLUTION: A coating device 10 comprises: a coating head 11; a tank 12 that stores electrode ink fed to the coating head 11; piping 13 through which the tank 12 and the coating head 11 are communicated with each other; selector valves 14-1 to 14-4 in which a feeding destination of the electrode ink fed out from the tank becomes the coating head 11 during coating and the feeding destination of the electrode ink becomes the tank during coating interruption; and an even number of suck-back valves 15-1 to 15-4 provided for every outlets 111-1 to 111-4 of the coating head 11. The suck-back valves 15-1 to 15-4 are arranged to face each other.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a coating device. [Background technology]

[0002] Patent Document 1 describes a coating device that uses a valve opening and closing technology when supplying ink to a coating head, filling the piping for supplying ink to the coating head with ink while suppressing the formation of air bubbles in the ink. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-171688 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when attempting to handle high flow rate coating using the coating device of Patent Document 1, the amount of extrusion increases, which inevitably increases the force of suck-back and causes a problem of greater impact. [Means for solving the problem]

[0005] In one embodiment, the coating device has suck-back valves facing each other. [Effects of the Invention]

[0006] The coating device of the present disclosure can offset the impact, thereby improving the quality and precision of the coating thickness. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a schematic diagram showing an example of a coating device according to a first embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] Embodiment 1 Hereinafter, embodiments of the present invention will be described with reference to the drawings. Fig. 1 is a schematic diagram showing an example of a coating device according to embodiment 1. In Fig. 1, a coating device 10 includes a coating head 11, a tank 12, piping 13, switching valves 14-1 to 14-4, and suck-back valves 15-1 to 15-4.

[0009] The coating head 11 has a plurality of discharge ports 111-1 to 111-4.

[0010] The tank 12 is a tank for storing the electrode ink. The tank 12 supplies the electrode ink to the coating head 11 via a pipe 13.

[0011] Pipe 13 is a pipe that connects tank 12 and coating head 11. In Fig. 1, pipe 13 branches so as to connect tank 12 to each of discharge ports 111-1 to 111-4 of coating head 11.

[0012] The switching valves 14-1 to 14-4 are switching valves that direct the electrode ink sent from the tank 12 to the coating head 11, and change the destination of the electrode ink to the tank 12 when coating is interrupted.

[0013] The suck-back valves 15-1 to 15-4 are valves that draw in liquid from the discharge ports to prevent dripping. The suck-back valves 15-1 to 15-4 are arranged opposite each other. In FIG. 1, the suck-back valves 15-1 and 15-2 face each other. The suck-back valves 15-3 and 15-4 face each other.

[0014] As described above, according to the coating device of the first embodiment, by arranging multiple suck-back valves in the piping and arranging the suck-back valves facing each other, it is possible to offset the impact. As a result, the impact force of the suck-back valve during intermittent coating is reduced. This in turn improves the quality and precision of the coating film thickness.

[0015] The present invention is not limited to the above embodiment and can be modified as appropriate without departing from the spirit of the present invention. For example, the number of suck-back valves 15-1 to 15-4 is not limited to four, but may be any even number, and they may be arranged to face each other. [Explanation of symbols]

[0016] 10 Coating device 11 Coating head 12 Tank 13 Piping 14-1~14-4 Switching valve 15-1~15-4 Suck Back Valve 111-1~111-4 Discharge port

Claims

[Claim 1] A coating head; a tank for storing electrode ink to be supplied to the coating head; a pipe communicating between the tank and the coating head; a switching valve that switches the destination of the electrode ink delivered from the tank to the coating head during coating and switches the destination of the electrode ink to the tank when coating is interrupted; an even number of suck-back valves provided for each discharge port of the coating head; The coating device, wherein the plurality of suck-back valves are arranged opposite to each other.

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