JPH07470B2 - Car manufacturing method - Google Patents

Description

The present invention relates to an automobile manufacturing method.

[Conventional technology]

2. Description of the Related Art Conventionally, an automobile manufacturing method as shown in FIG. 2 has been used, and this conventional method is composed of a welding assembly step A ', a painting step B', a painting completion body storage C ', and an outfitting step D'. In the welding assembly step A ′, the body body (hereinafter also abbreviated as “body”) is assembled in the body main body welding assembly step a1, and the components (door, hood, tailgate, and trunk lid) are assembled in the component welding assembly step a2. ) Is assembled, and the body and the components assembled in the finish building step a3 are assembled.

Then, in the coating step B ′, the following steps are sequentially performed. That is, the pretreatment process a4 → electrodeposition coating (ED) process a5 →
Electrodeposition baking process a6 → Body sealing process a7 → Undercoating process a8 → Sealing under baking process a9 → Sharpening process
a10 → intermediate coating step a11 → baking step a12 → top coating step a13 → baking step a14 → painting inspection a15 are sequentially performed.

The body that has finished the painting process B'is sent to the outfitting process D'through the painting completion body storage C '(a16), and in the outfitting process D', the painting completion body storage C '.
Assemble the suspension parts, engine, assembly parts and other parts from other processes to the holy body from block (block a17).

In this way, the automobile is completed.

[Problems to be solved by the invention]

As described above, in the conventional method, the body and components are assembled in each welding assembly line, and the body building process is set to build the component in the body in the next process, and then the rust prevention coating process and the main coating process are performed. It is designed to be manufactured as a series of painting processes without dividing.

By the way, the sealing work is usually included in the painting process, and if an attempt is made to automate the sealing work by a robot, etc., the components are built in the body in the above-mentioned conventional method. Not only a device that opens and closes and positions the component is required when sealing the inside and components, but also extremely complicated movements are required in the work of the sealing robot, making it difficult to automate, even if automation can be achieved. Even so, there is a problem that the cost becomes extremely high.

The present invention is intended to solve such problems, the coating process in the above conventional method is divided into a rust preventive coating process including a sealing work and a main coating process,
In the rust-preventive coating process, electrodeposition coating and sealing are performed separately for the body and the component in this order.Furthermore, the body-building process for building the component in the body is set after the rust-preventive coating process. By setting the main painting process after the body building process, automation of the sealing process can be realized easily and inexpensively, and the painting in the main painting can be performed efficiently while appropriately controlling the quality. The purpose is to provide an automobile manufacturing method.

[Means for solving problems]

Therefore, in the automobile manufacturing method of the present invention, in the automobile manufacturing line, the welding main body and the components that are openably and closably mounted on the main body are assembled by welding in separate lines, and the welding assembly step A and the welding assembly process. The body body and the components assembled in the process can be transported on different lines without building them and the components can be electrodeposited in parallel in the same process. After coating, rust-preventive coating process B that seals the body and the component in separate processes,
Body-building process D, in which the above-mentioned components are built in the body body that has been subjected to rust-proof coating in the rust-proof coating process, and body-building process D, and body-building process performed in the body-building process It is characterized in that it comprises a main coating step E in which a top coat is sequentially applied.

[Action]

In the automobile manufacturing method of the present invention described above, since the body and the component are subjected to the electrodeposition coating in parallel in the common process, the body and the component are not attached to the body and the component. At the same time, electrodeposition coating can be applied. In addition, since the sealing is performed in separate steps for the body and the component that are transported on separate lines without the body and the component being installed, the existence of the body and the component may cause obstacles to each other. This makes it easy to apply sealing to the inside of the body and components, and automation using robots is possible. Further, after the sealing, the main coating is performed in a built-in state, so that the main coating can be efficiently performed while appropriately controlling the coating quality.

〔Example〕

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing an automobile manufacturing method as one embodiment of the present invention.

As shown in FIG. 1, the manufacturing line in the present automobile manufacturing method is such that a line for manufacturing a body of a body (hereinafter sometimes abbreviated as “body”) and a line for manufacturing components are arranged in parallel. ing.

In this method, the body and the components (door, hood, tailgate, and trunk lid) to be assembled to the body are individually welded and assembled, and the body and the component are individually subjected to rust-preventive coating. Anti-corrosion coating process B for storage, storage process C using an automated warehouse or the like for individually storing each body and component that has been subjected to anti-corrosion coating or main coating, and protection process from storage process C Body building process D for building and temporarily fixing rust-painted bodies and components, main painting process E for main painting, and honing body and doors for main painting Outfitting subassembly process F to complete outfitting as a single component and white to complete outfitting It constructed a comprehensive assembly process G of assembling the data and doors and the like.

Since each of the above steps A to G is provided, the automobile is manufactured by the following procedure. First, in the welding assembly step A, a body assembly is performed on a body line having a welding assembly step b1 for assembling a body by welding and a finishing step b2 thereof, and a welding assembly step b3 for assembling components by welding and its finishing step b4. The components are assembled on the component line that includes

Then, in the anticorrosion coating process B, the anticorrosion coating is performed in parallel and under the common process in each of the body line and the component line without assembling the body and the component. That is, the body and the component are processed in parallel and under a common process, that is, a pretreatment process b5 and an electrodeposition coating process b6.
And each processing is performed in this order in the electrodeposition baking step b7, the body which is electrodeposition baked is processed through the body sealing step b8 and the undercoat step b9, and the component which is electrodeposition baked is processed by this component Via the sealing process b8 ′,
It is processed in a sealing under-baking step b9 'in which the body and component are processed under a common process (after being processed in the undercoating step b9 and the component sealing step b8').

Then, in the storage step C, the body and the component after the anticorrosion coating from the sealing under step b9 'of the anticorrosion coating step B are completed are temporarily stored in the body storage b10 and the component storage b11.

Next, in the body building process D, before the main painting,
Temporary fitting (temporary fixing) of the body and the component, that is, body construction b12 is performed.

And, in the main painting process E after the body construction is completed,
The following steps are sequentially performed. That is, the polishing step b13 → intermediate coating step b14 → intermediate coating baking step b15 → top coating step b16 → top coating baking step b17 → painting completion body inspection b18 are sequentially performed, and after the body inspection b18 is completed, the door removing step b19
Remove the door of the component from the body at.

Next, in each of the storages b20 and b21 of the storage step C, the body and the door that have completed painting are stored separately.

Further, in the outfitting subassembly process F, the indoor parts are assembled to the white body from the storage b20 in the indoor process b22, and the door from the storage b21 is outfitted in the door outfitting process b23. Separately, assemble the engine and suspension around each assembly process a24, a25.

Next, the body, the door, the engine and the suspension are completed as individual parts in each step b22 to b25 of the outfitting sub-assembly step F, and are assembled in a general assembly step G to complete the vehicle.

According to this embodiment, since the body and the component are subjected to the electrodeposition coating in parallel in the common process, the body and the component are not built, but the body and the component are simultaneously subjected to the electrodeposition coating. Can be applied,
It is possible to perform electrodeposition coating with the same work efficiency as the conventional electrodeposition coating performed by building the body and components.

In addition, by transporting the body and the component in separate lines without installing them, and performing the sealing for the body and the component in separate processes, the existence of the body and the component may interfere with each other. Instead, it becomes possible to use robots. In addition, the sealing of the inside of the body and the components becomes easy, and the rust prevention effect is improved.

In addition, other small parts and supplies can be processed in-line.

Further, since the main coating is performed after the components are installed on the body, quality control and efficiency in the main coating can be improved.

〔The invention's effect〕

As described in detail above, according to the automobile manufacturing method of the present invention, the following effects and advantages are obtained.

(1) Electrodeposition coating is applied in parallel to the body and components in a common process, so that the body and components are simultaneously electrodeposited even though the body and components have not been built. Can be efficient.

(2) Sealing is performed on the main body and the components that are conveyed on separate lines in separate processes, so the existence of the main body and components does not interfere with each other, and robots are used. It is possible to efficiently carry out the above automation. In addition, it becomes easy to apply sealing to the inside of the body and components, and the rust prevention effect is improved.

(3) After the sealing is applied, the main coating is performed with the components built in the body, so that the main coating can be efficiently performed while properly controlling the coating quality.

[Brief description of drawings]

FIG. 1 is a block diagram showing an automobile manufacturing method as one embodiment of the present invention, and FIG. 2 is a block diagram showing a conventional automobile manufacturing method. A: Welding assembly process, B: Anticorrosion coating process, C: Storage process, D: Body building process, E: Main coating process, F: Outfitting subassembly process, G: Outfitting process ( Total assembly process).

Claims (1)

[Claims] 1. A welding assembly step A for assembling a body of a vehicle and a component openably and closably mounted on the body by welding in separate lines in an automobile manufacturing line, and the above-mentioned welding assembly step. After transporting the body body and the component on different lines without building the body body and the component, the body body and the component are subjected to electrodeposition coating in parallel in a common process, Anti-corrosion coating process B that seals the body and the component in separate processes, and a body that builds the body by mounting the above components on the body that has been subjected to rust prevention coating in the rust-proof coating process. Intermediate coating and top coating are sequentially applied to the building process D and the body built in the body building process. An automobile manufacturing method, which comprises a main coating step E to be performed.