JPH078665B2 - Vehicle assembly parts inspection method - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for inspecting whether a component mounted on a vehicle body is correct or incorrect in a vehicle manufacturing line in which vehicles of different types are transported in a mixed flow state.

(Prior Art) In recent years, a so-called mixed flow system in which vehicles of different types such as vehicle types and specifications are assembled in one production line has been adopted in vehicle production plants. In this case, if the types of vehicles are different, the specifications and dimensions are different even if each of the assembled parts is the same type, so it is necessary to assemble different parts with different specifications according to the type of vehicle. It will be. Therefore, conventionally, the following method has been used so that parts corresponding to the type of vehicle can be assembled. In other words, the identification number for each specification is set for each part, and each part is classified and stored according to the specification on the shelf where this identification number is displayed, while the identification number of each assembly part is entered on the vehicle body. Stick the table. Then, in each assembling process on the manufacturing line, the worker selects parts having specifications corresponding to the type of the vehicle from the parts of the same type while referring to the above table, and assembles the parts to the vehicle body. By the way, according to this method,
In order to confirm the identification number entered in the above list, which is mistaken for the operator's visual confirmation, or to select a part with specific specifications from the same type of parts, There is a risk that the selection will be incorrect. Therefore, in the past, after assembling each part to the vehicle body, the inspector has the above list or an inspection table prepared separately,
The assembled parts were inspected for correctness by comparing them with the assembled parts.

(Problems to be Solved by the Invention) In recent years, various types of vehicles have been accelerating in response to user's requests and the like, and the types of assembling parts have been remarkably increasing accordingly. Therefore, there is a tendency that the mistakes in assembling the parts as described above increase, and there is a high possibility that a vehicle in which the parts are mistakenly assembled is shipped due to an inspection omission. On the other hand, it is only necessary to increase the inspection capability, but an inspection method similar to the conventional one requires an enormous amount of time and man-hours.

The present invention addresses the above-mentioned problems related to the inspection for confirming the correctness of the assembled parts in the production line of vehicles in which different types of vehicles are transported in a mixed flow state.
An object of the present invention is to improve the accuracy of the inspection while processing the inspection in a short time by using a barcode widely used in the distribution industry etc. for the inspection work.

(Means for Solving Problems) That is, the present invention relates to a method for inspecting the correctness of a component assembled to a vehicle body in a vehicle manufacturing line in which vehicles of different types are conveyed in a mixed flow state. , A bar code indicating information about the part is displayed in advance on each assembly part, and the bar code of each part is read by the reader when the car body with these parts installed is transported to the inspection station. read. On the other hand, in parallel with this, the information about the vehicle is called from the host computer provided in the line. Then, the information indicated by the bar code, specifically the identification number of the component actually assembled, and the information from the host computer, specifically the identification number of the component to be assembled in the vehicle. Are compared to determine whether or not the parts assembled to the vehicle body are correct.

(Operation) According to the above configuration, when the inspector at the inspection station brings the reader close to the bar code of the component assembled to the vehicle body to read the code, the assembly is actually performed from the reader. A signal indicating the identification number of the part in question is output. On the other hand, the host computer outputs a signal indicating the identification number of each assembly part corresponding to the type of vehicle currently inspected, and compares this signal with the signal from the reader, It is determined whether or not the identification numbers indicated by the signals match, and the correctness of the assembled parts is determined by this.

(Examples) Examples of the present invention will be described below.

First, the structure of a manufacturing line to which this embodiment is applied will be described. As shown in FIG.
Has an assembling station 2 for assembling each part to a vehicle body, and an inspection station 3 provided on the downstream side of the assembling station 2 for checking whether the assembled parts are correct or not. Different vehicles are sequentially conveyed by the conveyor 4 in a mixed flow state. In the inspection station 3, a terminal 6 of a host computer 5 that manages the line 1, a display panel 7 connected to the terminal 6, and a bar code reader 8 connected to the display panel 7. And are provided.

Next, the procedure of the vehicle assembly parts inspection performed in the manufacturing line 1 will be specifically described with reference to FIG.

First, as a pre-process I, an identification number indicating the type, specifications, etc. of each part is set, and a bar code B representing the identification number is printed by combining a plurality of lines having different thicknesses as shown in FIG. The attached label C is attached to each component A. Then, as the next step II, in the assembly station 2, the parts A ₁ , A ₂ ... Having specifications according to the type of the conveyed vehicle body X are selected from the parts of the same type to be attached to the vehicle body X. Assemble.

Next, as a third step III, when the vehicle body X is conveyed to the inspection station 3, the labels attached to the parts A ₁ , A _2, ... Assembled to the vehicle body X at the inspection station 3 respectively. C _1, C ₂ ... barcode B _1, B ₂ ... along with read by the bar code reader 8, these bar code B _1, B ₂ ... information indicated, i.e. the parts a _1, a ₂ ...
Is transmitted to the terminal 6 via the display panel 7 as the signal a.

On the other hand, in parallel with the third step III, as the fourth step IV, the terminal 6 calls out information about the vehicle body X currently in the inspection station 3 from the host computer 5 as a signal b. Here, the host computer 5 stores information such as the type of vehicle type and specifications of each vehicle located at each station in the line 1 and the identification number of each part assembled according to the type. It is stored, and these pieces of information are taken out and input to the terminal device 6.

Then, as a final step V, the identification number of each part indicated by the barcodes B ₁ , B _2, ... Read by the reader 8 and the vehicle body X called from the host computer 5 are assembled in the terminal device 6. The identification numbers of the components to be compared are compared with each other, and it is determined whether or not these components A ₁ , A _2, ... Then, the determination result is sent to the display panel 7 as a signal C, and if they match, "OK" is displayed, and if they do not match, "NG" is displayed.

If "OK" is displayed on the display panel 7, that is, if the parts A ₁ , A ₂ ... Are correctly assembled to the vehicle body X, then the vehicle body X is directly conveyed to the next station. ,
Further, when "NG" is displayed on the display panel 7, that is, when the wrong parts are assembled, the body X is taken out from the production line 1 and the wrongly assembled parts are assembled into the correct parts. Predetermined processing such as replacement is performed.

In this way, the inspector simply reads the bar code displayed on each component mounted on the vehicle body by bringing the reader 8 close to the scanner 8 to determine the correctness of each assembled component.
The result is displayed on the display panel 7, and necessary measures are taken for a vehicle body in which parts are erroneously assembled.

(Effects of the Invention) As described above, according to the vehicle assembly component inspection method of the present invention, correct components are assembled to each vehicle body in a vehicle manufacturing line in which vehicles of different types are transported in a mixed flow state. The inspection of whether or not it will be performed accurately and quickly. And, even if the number of types of parts to be mounted on a vehicle increases, especially with the diversification of vehicles, since this type of inspection is accurately performed in a short time, without significantly increasing the time and man-hours, The shipment of the vehicle in which the wrong parts are assembled is prevented.

[Brief description of drawings]

FIG. 1 is a schematic view of a main part of a manufacturing line to which an embodiment of the present invention is applied, FIG. 2 is a process diagram showing a procedure of an assembly part inspection method according to an embodiment of the present invention, and FIG. 3 is the inspection. It is a figure which shows the barcode (label) used by the method. 1 ... Manufacturing line, 3 ... Inspection station, 5 ... Host computer, 8 ... Reader, A ... Assembly parts, B ... Bar code, X ... Body.

Claims (1)

[Claims] 1. A method for inspecting the right and wrong of a component assembled to a vehicle body in a vehicle manufacturing line in which different types of vehicles are transported in a mixed flow state, wherein each assembled component indicates information about the component. The code is displayed in advance and the bar code of each assembly part is read by the reader when the car body with these parts assembled is conveyed to the inspection station, while the host installed in the line A set of vehicles characterized in that information about the vehicle is called from a computer, and information about the parts read by the reader is compared with information about the vehicle body called from the host computer to determine whether each assembly part is correct. Attached parts inspection method.