Sealing device of automobile rear wheel cover C-column and sealing method thereof

Abstract

The invention discloses a sealing device of an automobile rear wheel cover C-column and a sealing method thereof. The sealing method comprises the following steps: (1) installing a foaming pouring hole in an automobile rear wheel cover C-column, and fixedly installing a baffle below the foaming pouring hole, enabling the baffle to be positioned in a cavity between the automobile rear wheel cover C-column and an automobile side body outer plate, wherein the cavity is in a cut-through state; (2) through a vehicle body preformed hole, pouring liquid wax into the cavity of an own vehicle body, enabling the liquid wax to be flowed through the cavity and forming a wax film, after that, sealing the vehicle body preformed hole; and (3) pouring a foaming agent into the foaming pouring hole, enabling the foaming agent to be expanded on the baffle and shield the foaming pouring hole so as to curing, thereby sealing the foaming pouring hole. The sealing device comprises the foaming pouring hole, the baffle and a foaming layer filled in the foaming pouring hole. The foaming layer is cured on the baffle so as to form and block the foaming pouring hole. The sealing method is capable of guaranteeing that the liquid wax is smoothly flowed in the cavity of the automobile rear wheel cover C-column, and guaranteeing sealing performance of the automobile rear wheel cover C-column.

Description

technical field [0001] The invention relates to the technical field of sealing of automobiles, in particular to a sealing device and a sealing method for a C-pillar of a rear wheel cover of an automobile. Background technique [0002] After the car body is manufactured, it often has to withstand the test of five to ten years or even longer. During this period, the environment may be very harsh and cause rust. The anti-rust treatment of the car is mainly concentrated on the car body. The body in the manufacturing process is called "body-in-white". Although the body-in-white is treated with "cathode electrophoretic coating" for anti-rust treatment, this does not prevent the occurrence of inner cavity corrosion; There are many cavities, these cavities are very important for increasing the strength of the vehicle body and reducing the weight of the vehicle body, but these cavities cannot be dealt with in the ordinary antirust coating process. [0003] In order to prevent this k...

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Problems solved by technology

[0004] However, in the prior art, in order to ensure the anti-corrosion performance of the inner cavity of each part of the automobile, so that the liquid wax can flow smoothly when filling the wax, wax injection holes are often reserved in advance (through professional design) when manufacturing parts with cavities. Finally, the wax filling is generally carried out directly in some threaded holes and weight-reducing holes, and the wax holes will not be specially reserved); for other closed parts, some holes will be specially opened to facilitate the liquid wax in the wax drain. Outflow, so they are not completely sealed. When the car is running in dusty conditions, there will be dust accumulation in the cavity parts with non-sealed holes, which will affect the performance of the whole vehicle over time.

Especially in the inner cavity of parts such as the C-pillar of the rear wheel cover of the car, once dust enters, the dust will enter the spare tire compartment along the inner wall of the C-pillar of the rear wheel cover. The spare tire compartment is a space that the user directly contacts. The speed of dust accumulation will greatly reduce the user experience

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