Battery sealing agent spraying device

Abstract

The invention relates to a battery sealing agent spraying device which comprises a fixed base, a spray head, a push and press mechanism, an agent passing pipe and a sealing agent conveying mechanism.The spray head comprises a spray cover and an agent cylinder arranged in a cavity of the spray cover.A through hole is formed in the agent cylinder in the axial direction of the agent cylinder.The push and press mechanism comprises a cylinder and a piston arranged in the through hole in a closed and sliding mode.An air containing cavity is formed between the outer side end of the piston and the inner wall of the spray cover.A storage cavity is formed between the inner side end of the piston and the inner wall of the agent cylinder.A limiting plate is arranged at the front end of the agent cylinder.A containing cavity is formed between the limiting plate and the front end of the agent cylinder.A plurality of spray openings which can be communicated with the containing cavity when the pressure of the storage cavity changes are evenly distributed in the side wall of the spray cover in the circumferential direction of the spray cover.The internal volume and pressure change of the agent cylinder are changed through the simple mechanical structure, a sealing agent is quantitatively sprayed to battery steel shells, spraying is uniform and continuous, the utilization rate of the sealing agent is high, the spray head movement process is stable, and positioning is accurate.

Description

technical field [0001] The invention relates to the technical field of battery manufacturing equipment, in particular to a battery sealing agent spraying device. Background technique [0002] At present, applying sealing agent to the battery is an important process in the battery manufacturing technology. Three or four stations are mainly used to evenly apply the sealing agent on the surface of the battery steel case to prevent battery liquid and gas leakage and ensure that the battery quality. At present, the battery sealing agent coating equipment in the industry includes a needle cylinder and a needle nozzle. Each movement of the needle nozzle corresponds to the surface of the battery steel shell. Through the movement of the piston in the needle cylinder, the sealing agent is coated on the surface of the steel shell through the needle nozzle, After the cloth is finished, due to some sealing agent remaining in the needle nozzle, when the cylinder drives the needle nozzle ...

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Problems solved by technology

[0004] According to the applicant's reflection, although the battery sealing agent coating device is beneficial to optimize the controllability of the coating amount of the sealing agent by controlling the pressure of the compressed air, so as to realize automatic and continuous glue coating, however, due to the sealing agent flowing from the tail of the needle It is pressed into the needle through the needle seat, and when it flows out through the needle and coated on the steel shell of the battery, a relatively concentrated point is formed at first, and the surface of the steel shell is formed by the rotation of the steel shell and the fluidity of the sealing agent. All are coated with sealing agent, and in the actual production process, the rotational speed of the rotating equipment that drives the steel shell, the fluidity of the sealing agent and the smoothness of the steel shell surface are all factors that directly affect the uniformity of the sealing agent coating on the surface of the steel shell , it is difficult to achieve synchronous control of these factors, and it is impossible to achieve uniform and complete coating of the sealing agent on the surface of the battery steel case, and the overall structure of the equipment is complex and the cost is high

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