JPS6216869B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automobile body assembly management system, and in particular, to an apparatus for mixed production of many types of car bodies using a plurality of car body parts assembly lines and a car body assembly line for assembling car body parts assemblies from these lines into car bodies. This invention relates to an automobile body assembly management device.

As an assembly method for automobile bodies, a system is adopted in which multiple types of car bodies with different models, specifications, and standards are produced in a mixed flow.In this system, car body parts are prepared on each line according to the production plan. The necessary body parts are placed on the production line one by one, and in each process, workers confirm that the body parts assembly being transferred matches what is written in the assembly order chart, and then proceed according to the assembly order chart. Then, the necessary parts must be attached or the required processing must be performed, and there is a risk that defective products will be produced due to errors in reading the production schedule or other parts, or mistakes in assembly. For this reason, in recent years, a system has been developed in which a part of the car body is first assembled on a mixed flow line, then distributed to a dedicated line for each type of car, and then body assembly is completed on that dedicated line. As described in Publication No. 77434, vehicle type information such as applicable specifications, models, and standards is given to parts set on the line in the initial process of body production, and as the parts move through each process on the line, An automobile assembly management system has been proposed in which the vehicle type information is sequentially read and identified by an automatic reader, and work instructions for each process are given based on these identification signals. however,
This management system assigns vehicle model information such as specifications, model, and standards to one of the parts before assembly, and automatically reads that information at each step to provide instructions for assembly, processing, and transportation of various parts. Therefore, even if the production order of the car body changes from the schedule, it can be followed. There is a problem in that a large area is required to provide a dedicated line.

An object of the present invention is to provide an automobile body assembly management device that saves space, eliminates worker reading errors and assembly errors in a mixed flow production system, and enables automation and unmanned assembly of automobile bodies. The gist of the system is to provide an automobile body assembly management system for equipment that produces multiple types of car bodies in a mixed flow using multiple car body parts assembly lines and a main line for assembling car body parts from the lines into car bodies. A vehicle type information adding device, which is disposed in the main body parts assembly line and attaches vehicle type information to body parts according to the type of automobile to be produced; A reading control device that reads the vehicle type information given by the vehicle type assigning device is installed at the first process of the main line for car body assembly, and by receiving the signal from the reading control device, it issues work instructions based on this signal. An automobile body assembly management device comprising: a work control device having a shift register that instructs the work contents of each process of the line by sequentially shifting to each process of the line.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a conceptual diagram of an automobile body assembly management system according to the present invention, showing an example in which the present invention is applied to a system for mixed production of two types of automobile bodies, A and B. In the figure, 1A and 1B are body parts of different car models,
For example, underbody assembly line 2A, 2B
are other body parts of the car model corresponding to 1A and 1B, such as the cab side. light parts assembly line,
3A and 3B are further body parts of car models corresponding to 1A and 1B, such as cab sides. Assembly line for left parts, 4 and 5 are underbody tacking lines and addition lines, 6 and 7 are cab side.
8 is a temporary attachment line for right and left parts; 8 is an additional line; 9 is a main line for assembling the vehicle body.

In the automobile body mixed flow production system configured as described above, body parts for a certain car type are produced on the body parts assembly line 1.
A, 2A, 3A, or 1B, 2B, 3B, respectively, and each assembled vehicle body parts assembly (in this case, underbody, cab side, etc.).
Light parts and cab sides. Left parts) are mixed with body parts assemblies of other vehicle models on tacking lines 4, 6, and 7, and after tacking, they go through necessary processes such as additional hammering on lines 5 and 8, and then are assembled on the main body assembly line 9. It is assembled into the body of the vehicle type, but the body assembly management device constitutes the computer.
A central processing unit (hereinafter referred to as CPU) 10 consisting of an arithmetic unit, a control unit, and a storage unit is installed in each vehicle body parts assembly line 1A, 1B, 2A, 2B, 3A, and 3B and receives signals from the CPU 10. A vehicle type information imparting device 12 receives the signal and applies vehicle type information to the vehicle body parts; a reading control device 19, 25 reads the vehicle type information of each body part assembly; It consists of a work control device 20 having a shift register that instructs the work contents of each process of the main line 9 for body assembly by sequentially shifting work instructions to each process of the main line 9 for body assembly. In the figure, 17, 23 are reading control devices, 11, 16, 1
8, 21, 22, 24 are work control devices.

Each work control device 11, 16, 18, 20, 2
1, 22, 24 are as shown in FIG.
An input unit 30 that receives signals from the CPU 10 or the reading control device and signals from each process, a control unit 31 that decodes the signals and controls the shift register 32, and works on each line according to the decoded signals. and a shift register 32 for instructing. Further, as shown in FIG. 3, the vehicle type information adding device 12 includes a vehicle type information adding device 14 that adds vehicle type information to vehicle body parts, a vehicle type information reader 15 that reads vehicle type information given to vehicle body parts, and a shifter. Input section 3 receiving signals from register 32
3. A controller 34 that receives the signal and controls the vehicle type information adding device 14 and the reader 15, as well as a comparison unit 3 that compares the vehicle type information as an output signal from the reader 15 with the vehicle type information from the shift register 32.
5, and a vehicle type information adding device 13 including 5.

The reading control devices 17, 19, 23, 25 include a reader 39 that reads vehicle type information given to vehicle body parts.
an input section 36 that receives a signal from the shift register 32; a control section 37 that decodes the signal and controls the comparison section 38; and vehicle model information inputted via the control section 37 and the vehicle model read by the reader 39. It consists of a comparator 38 that compares information.

When managing vehicle body assembly using the vehicle body assembly management apparatus configured as described above, it is performed as follows. In addition, automatic body parts supply equipment, automatic processing equipment, etc. are installed in each process of each assembly line, and these are controlled by work control equipment 11, 16, 18, 2.
Vehicle body parts are supplied or processed in response to signals from 0, 21, 22, and 24.

When the power of the automobile assembly management device is turned on, it operates according to the program stored in the memory of the computer.If the program shown in FIG. 5 is stored in the memory, the computer Vehicle type information is input from the CPU 10 to the work control device 11, a signal decoded by the control section 31 is input to the shift register 32, and the required parts are delivered from the automatic body parts supply device to the body parts assembly line 1A, 2A, 3A or 1B. ,2B,
3B respectively, while the work control device 1
The vehicle type information adding device 12 operates based on a work command from the shift register 32 of No. 1, and adds vehicle type information to the vehicle body parts at an appropriate process on the car body parts assembly line. The vehicle type information may be provided in the form of a dowel, a stamp, or a barcode label. In the case of a dowel, the position of the dowel is selected based on the vehicle model information from the computer, so that the vehicle model can be distinguished.

The vehicle type information attaching device 12 reads information on the vehicle body parts using a reader 15 in order to determine whether the information attached by the vehicle type information attaching machine, for example, the marking machine 14, is correctly attached to the vehicle body parts. The read information is compared with the vehicle type information from the shift register 32 using the comparator 35, and if it does not match (NG), it is stamped again using the stamping machine 14 and the information on the vehicle body part is corrected, and if it matches (OK). In this case, a signal indicating that the vehicle type information molding has been completed is output to the work control device 11, and the supply of new vehicle body parts is thereby started.

Vehicle body parts assembly line 1A, 2A, 3A or 1
Vehicle body parts assemblies assembled at B, 2B, and 3B, for example, the underbody assembled at assembly line 1A, are moved from the line to temporary attachment line 4.
There, the shift register 32 of the work control device 16 is transferred based on the vehicle type information from the CPU 10.
In accordance with work instructions output from the machine, temporary attachment is performed by welding or other means, and other supplied parts are assembled.

In addition to underbodies from line 1A, underbodies from line 1B also flow into this tacking line 4, so the production order input from the computer's CPU 10 to the work control device 16 may differ from the actual flow. In consideration of the situation, a reading control device 17 is provided, whereby vehicle type information is read from the underbody that is actually flowing before being transferred from the tacking line 4 to the next additional hitting line 5. The read information is compared with the information from the shift register of the work control device 16, and if they do not match (NG), the corresponding underbody is extracted or interrupted from the line, and the information of the next underbody or that underbody is is read, and if OK, a signal is output from the reading control device 17 to the work control device 18, and the work control device 1
The contents of the shift register 32 of No. 8 are shifted, parts are supplied and work instructions are given based on the shift information, and the additional stroke line 5 performs additional strokes and parts assembly, and then the main line 9 for body assembly Sent.

On the other hand, the left and right assemblies on the cab side are also tacked and added in the same way as the underbody, but the reading control device 19
If the information read by and the information read by the reading control device 25 do not match, the production order is corrected to match the production order of the underbody.

Before the underbody transferred to the main line 9 for body assembly in this way enters the first process of the line 9, each body information is read by the reading control device 19. Compare the read vehicle type information with information from the shift register 32 of the work control device 18,
If they do not match, an NG signal is output, and after that signal the underbody is extracted or the order is changed, the information is read again, and if the match is OK, it is output to the work control device 20 and the shift is performed. The contents of the register are shifted to determine the production order, and based on the shift information, parts supply and various work instructions are given. On the other hand, the reading control device 25 reads vehicle type information from both cab side assemblies, compares the vehicle type information with information from the shift register of the work control device 20,
If they do not match, an NG signal is output, which causes both cab side assemblies to be removed or their order to be changed, and the information is matched with the information from the shift register of the work control device 20.

In the flowchart of FIG. 5, the reading control devices 17, 2 after the tacking lines 4, 6, 7
3 and the work control devices 18 and 24 are omitted because their operations are the same as those of the reading control device 19 and the work control device 20.

As explained above, the automobile body assembly management device according to the present invention assigns vehicle type information to body parts or their assemblies in a dedicated car body parts assembly line, reads the vehicle type information in the initial process of the mixed flow line, and makes plans. The body parts assembly is sent to the main body assembly line according to the timing, and after that, the memory contents of the shift register are shifted together with the car body, and work instructions are given based on the shift information in the shift register, so each process is There is no need to install a reading control device on the machine, and the relatively simple configuration eliminates reading errors and assembly errors caused by human work, making it easier to unmanned and automated car body assembly, and to respond to model changes. It also has the advantage of being easy to use.

[Brief explanation of the drawing]

Fig. 1 is a conceptual diagram showing an example of application of the automobile body assembly management device according to the present invention, Fig. 2 is a block diagram of the work control device, Fig. 3 is a block diagram of the vehicle type information adding device, and Fig. 4 is a reading Block diagram of the control device,
FIG. 5 is a flowchart of the management device shown in FIG. 1A, 1B, 2A, 2B, 3A, 3B...Car body parts assembly line, 9...Car body assembly main line, 10
...Central processing unit, 11, 16, 18, 20, 2
1, 22, 24...work control device, 12...vehicle type information providing device, 17, 19, 23, 25...reading control device, 32...shift register.

Claims (1)

[Scope of Claims] 1. An automobile body assembly management device in a facility for mixed production of many types of car bodies using a plurality of car body parts assembly lines and a car body assembly main line for assembling the car body parts assemblies from the lines into car bodies, comprising: A vehicle type information adding device is installed on each car body parts assembly line and adds car type information to the car body parts according to the type of car to be produced; A reading control device reads the vehicle type information given by the vehicle type giving device to the parts, and is installed at the first process of the main line for car body assembly, and by receiving the signal from the reading control device, issues work instructions based on the signal. 1. An automobile body assembly management device comprising: a work control device having a shift register that instructs the work content of each process of the line by sequentially shifting the control unit to each process of the line. 2. The apparatus according to claim 1, wherein the plurality of vehicle body parts assembly lines are vehicle underbody and cabside assembly lines. 3. The device according to claim 1 or 2, wherein the vehicle type information adding device comprises a vehicle type information adding machine, a reader for reading the given information, and a comparator for comparing the given information and the read information. . 4 Claims in which the reading control device comprises an input section that receives signals from the shift register, a reader that reads vehicle type information from vehicle body parts, and a comparison section that compares the signal from the input section and the signal from the reader. The device according to item 1, 2 or 3.