JPS5867575A - Car type information indicating method in car production management system - Google Patents

Abstract

PURPOSE:When producing cars of different specification on a common line, to facilitate the relative work between the indication and the reading of the information while to increase the density of a car type information, by applying a paint containing a ferromagnetic material on a set part and magnetizing to store the car type information. CONSTITUTION:The upstream side of a floor main line 1 is applied with a paint containing a ferromagnetic material while a painting device 30 is provided to store magnetically. While part feeders 50, 70, 90 for automatically reading the information stored in the magnetic member then automatically selecting and carrying the assembled part are provided on the floor main line 1, body main line 2 and a metal line 4. A point device 100 for reading the information to switch the line is provided between the lines 1 and 2 while an automatic stamping device 110 for reading the information to stamp the body number is provided between the line 2 and a special work line 3. A special work indicator 130 for reading the information to tell the special body work to the worker is also provided on the line 3.

Description

[Detailed Description of the Invention] When manufacturing vehicle models with different specifications, models, standards, etc. on a common line, the present invention provides for the following technology: displaying vehicle type information, and having an automatic reading device read and identify the vehicle type information sequentially as the part moves through each process on the line;
In an automobile production control system in which work instructions for each process are given using these identification signals, the present invention facilitates the display and reading of vehicle type information and increases the density of the vehicle type information.

When assembling automobiles with different specifications, models, standards, etc. on a common line, one of the parts input to the line is
Automatically reads vehicle model information such as model, standard, etc. each time, performs work such as assembling, processing, and instructing transport destinations of each part, and flexibly responds to pull-outs and interruptions midway through the line. Two conventional methods are known as systems for this purpose.

The first conventional method is to attach a label printed with a barcode containing vehicle type information to a part of the body in the initial process of the line, and then automatically read the barcode optically. It is something. However, with this method, since it cannot be read optically after painting, the vehicle model information must be displayed and read by another method after painting, which poses the problem of not being able to manage information consistently from beginning to end. be.

The second conventional method is to solve the problems of the first method.In the initial process of the production line, vehicle type information is displayed on the lower part of the body through a plurality of holes, irregularities, etc. This is a system that automatically reads vehicle model information by detecting the location and number of holes, irregularities, etc. This method has the advantage that the vehicle model information can be read even after the body is painted, but it is not easy to change the position and number of holes, unevenness, etc. every time the content of the vehicle model information changes, and in practice , it is difficult to increase the amount of information per unit area.

Therefore, when manufacturing car models with different specifications, models, standards, etc. on a common line, the present invention displays vehicle model information such as applicable specifications, models, standards, etc. for parts set on the line in the initial process, In an automobile production control system, the vehicle type information is sequentially read and identified by an automatic reading device as the parts move through each process on the line, and work instructions for each process are issued based on these identification signals, In order to facilitate the display and reading of the vehicle type information and to increase the density of the vehicle type information, a part of the car body is coated with paint containing a ferromagnetic material, and the painted area is then magnetized. Accordingly, the vehicle type information is stored.

The present invention will be explained in detail below.

FIG. 1 is a conceptual diagram of an automobile assembly line to which the method of the present invention is applied, and this figure shows an example of assembling two types of automobiles. That is, 1 is the floor main line, 2, 2 is the body main line, 3.3 is the special work line, 4.4 is the metal line, 5, 5 is the painting line, 6, 6 is the instrumentation line, and the floor main After the floor is assembled on line 1, separate lines L and L' are provided for each vehicle type to perform assembly.

In the floor main line 1, as shown in FIG.
4, and on the body main line 2, as shown in FIG. 1B, the left and right body sides 15, 16, the roof 17, the rear panel 18, the cowl 19, the parcel shelf 20, etc. are assembled to the floor main assembly 14. Also,
Special work line 3.3 performs work such as drilling required only for special specification vehicles. Furthermore, in the metal line 4°4,
As shown in FIG. 1C, the front fender 21, front door 22, rear door 23, hood 24, trunk lid 25, etc. are assembled to complete the body assembly.

Figure 2 is an overall view of the assembly line excluding the above-mentioned UJ5 painting line and finishing line, 1 is the floor main line,
2 is a body main line, 3 is a special work line, and 4 is a metal line. As a device for carrying out the system of the present invention, paint containing a ferromagnetic material as a medium for recording predetermined information is coated on the upstream side of the floor main line 1, and the ferromagnetic material is magnetically applied. A ferromagnetic material-containing paint coating device 30 for recording is installed, while a floor main line 1, a body main line 2, and a metal line 4 are installed.
Each includes a parts supply device that automatically reads the information recorded on the ferromagnetic material and automatically selects and conveys the corresponding parts to be assembled! 50, 70.90. Additionally, a point device 100 is installed between the floor main line 1 and the body main line 2 to read the information recorded on the ferromagnetic material and switch the line according to the vehicle type. In between is an automatic engraving machine that reads the information recorded on the ferromagnetic material and engraves the body number.
2110 is provided. Further, in the special work line 3, there is also a special work instruction device 13 that reads the information recorded on the ferromagnetic material and notifies the worker of the special work on the body.
0 is set.

These will be explained in detail for each device.

As shown in FIG. 3, the ferromagnetic material-containing paint coating device 30 has a plurality of stockers 31a organized by type and specification, for example.
This is related to the front body selective take-out machine 32 stored in ~31f. That is, information on the order table created based on the production plan is transcribed onto a tape 33, this tape 33 is read by the reader 34, and its output signal is input to the control device 35. A signal from the control device 35 drives the paint system @38 and the vehicle type information writing device 51W. That is, when the body 10 comes in front of the painting gun 38a, the pump built in the painting device 38 is activated, and the paint also built in is pumped from the gun 38a to the body 10.
is sprayed on. Here, the paint contains a binder that is a thermosetting resin (urethane resin, nitrocellulose resin, acrylic resin, PVC resin, etc.) and a ferromagnetic material, and the ferromagnetic material is a high coercivity magnetic material such as iron oxide. body is used. Then, as shown in FIG. 4, a writing device F51W magnetically records vehicle type information on the ferromagnetic material-containing paint 37 applied to the body 10.

As mentioned above, if the ferromagnetic material-containing paint is applied directly to the body 10 while masking it, vehicle type information can be recorded with high density, and even after the original painting is completed, the car type information can be recorded over the original paint. can be read.

Alternatively, as shown in FIG. 5, the body 10 may first be coated with an insulating substance 37a, and then a ferromagnetic material-containing paint 37 may be coated thereon. Due to this double coating, even if the body 10 is electrically welded afterwards, the magnetization will not be disturbed by the eddy current generated at that time, and the vehicle model information will not be erased. FIG. 6 is a plan view of FIG. 5. Furthermore, instead of applying the ferromagnetic material-containing paint uniformly, if it is painted in a barcode shape according to the car model information, the car model information can be optically read before the actual painting, making it possible to use it in combination with conventional equipment. It becomes possible.

In this case, after painting, all you have to do is read the barcode information magnetically.

Here, as shown in the third diagram, the front body is assembled while being moved to the right from the parts setting position 46, but at the assembly completion position 47, the vehicle body detector 4
7a automatically detects the vehicle type, model, etc., and the automatic lifter 48 stores the vehicle in a predetermined stocker 31a to 31f. The vehicle body detector 47a is configured to detect and discriminate features of the front body, such as length, presence or absence of holes, etc., using a phototube or a limit switch.

The vehicle body detector 49 installed on the body takeout port side of the stockers 31a to 31f is used to reconfirm the front body. If confirmation is not obtained, the selective takeout machine 32 is stopped, and if confirmation is made, the control device 35 is stopped. Selective take-out machine 3 in cooperation with
2 to transport the front body as described above.

As shown in FIG. 2, the parts supply device 50 has a reader 51R placed upstream of the front body being fed into the floor main line 1, and paints a part of the front body 10 that has been moved. The information recorded on the ferromagnetic material in the painted paint 37 is read, and this output is transmitted to the parts extractor 952.56. The take-out machine 52 is located in the stockers 53a and 5 on the rear floor.
3b, the floor facing the front body is automatically selected and taken out, and after being partially assembled and processed in the pre-assembly line 54, it is sent and supplied to the floor main line 1. Similarly, the front floor [1a] is also taken out from the stockers 55a, 55b by the takeout machine 56, and sent to the floor main line 1 via the preliminary assembly line 57. This feeding action is performed in synchronization with the movement of the front body.

As shown in FIG. 7, the point device 100 is installed at a branch point of a line in charge of assembling the bodies of different vehicle models.
A pair of rails 102.10 formed on the reciprocating body 101
3, the upstream rail 104 is switched and connected to either downstream rail 105 or 106. The reciprocating body 101 can be reciprocated by a cylinder 107, and the cylinder 107 is connected to the reading device 1 disposed upstream from the branch point.
08R magnetically reads predetermined information from the ferromagnetic material-containing paint painted on a part of the front body of the floor main assembly that has moved, and sends the controller 10 with the output.
9.

The parts supply device 70 of the body main line 2 is connected to the parts supply device 5° so as to selectively supply parts such as a roof, parcel shelf, cowl, etc. to the same line based on the information read by the reader [71R]. Supply sections 72, 72... having a similar configuration are provided along the line, and
As shown in FIGS. 8 and 9, these supply units 72, 72...
A side body supply section 73 is disposed at a position opposite to. This side body supply section 73 supplies left and right side bodies 15A and 16A for sedans and hard tops, for example.
and a stocker 77 in which 15B and 16B are arranged facing each other in each row.
．． 78, 79, 80 and a lift device ai, s2 that pulls out and lifts the side body by selecting from these stockers.
An endless rail 74 passes between these opposing stockers and runs parallel to the body main line 2, and a plurality of self-propelled hangers 75, 75.
...is established. Each of these self-propelled hangers 75, 75.
. . . are controlled by a control device 76 to simultaneously suspend left and right side bodies for either sedans or hardtops and transport them onto line 2 along rails 74. The control device 76 and the lift devices 81 and 82 are controlled by the information reading output of the reading device 71R that magnetically reads the ferromagnetic material-containing paint on the floor main assembly B moving on the line 2, and the self-propelled hanger 75
Either the left or right side body is suspended and transported at the same time. An assembly system used in the body main line 2 is disclosed in Japanese Patent Publication No. 53-21542.

The automatic marking device 110 is a device that stamps a body number on the body assembled on the body main line 2.
As shown in FIG. 0.11.12, the output of the magnetic record read by the reading device 111R is input to the controller 112, thereby controlling and operating the stamping machine 113. That is, the reading device 11
The output of 1R is input to the controller 112, and the body number to be stamped is displayed in the upper display field 114, and the stamping standard 11
3, and on the other hand, the number set by the stamping machine 113 is reversely transmitted and displayed in the lower display field 115. By comparing the upper and lower display columns 114 and 115, the correctness of the stamping number can be confirmed, and the hammering of the stamping command can be controlled.

The stamping machine 113 has a stamping head 119 attached to a cylinder 118 hanging down from a frame 117 fixed to a rail 116 via a binding joint 210. Engraved head body 1
19 is a cylinder 1 that extends inside a substantially downward U-shaped yoke 120.
21, the head 12 moves laterally (in the direction of arrow C)
2, and the cowl 19 is sandwiched between one end of the yoke 120a and the head 122 and stamped. The head 122 has as many rotary print heads 123 as the number of digits of the body number arranged side by side, and each rotary print head 123 has a pole 125 and a feed gear 126 operated by a corresponding hydraulic plunger v124.
It is rotationally driven in cooperation with the printer, and the desired print is rotated and positioned on the entire surface. 127 is a reversal prevention pawl. The rotational position of the rotary print head 123 is detected by a rotational position detection means (not shown) provided on a rotational position detection gear 128 that meshes with the feed gear 126, and is sent back to the controller 112. be. 211 is the rod 118a of the cylinder 118
The rod 211a is a cylinder fixed to the yoke 12.
Connected to 0. In addition, in FIG. 11, 129 indicates a copy tape. The imaginary line in Fig. 11 is cylinder 2.
11 is retracted and the yoke 120 is rotated around the bin joint 210. In this state, the cylinder 121
Press the head 122 toward the yoke to perform marking. Further, in FIG. 12, 124a and 124b indicate hydraulic boats for operating the plunger 124.

The special work instruction device 130 instructs the operator to carry out special processing or assembly of parts on the body depending on different specifications, such as right-hand drive, left-hand drive, etc.

That is, as shown in FIG. 13, the read output of the magnetically recorded information by the reading device 131R is input to the indicator 132, and the necessity of special work on the outer body is determined. If a special action is required, the lamp 133 is turned on or flashed and the buzzer 134 is sounded to notify the operator that the body is to be subjected to special work. Then, while making the notification, one of the lamps 136 in the scheduled special work instruction columns 135a, 135b, . . . is turned on to instruct the detailed work to be performed on the body. These instruction columns 135a, 135b...
A card 137 is prepared for each of the special work details, and the first worker reads card 1 according to the instructions.
37 and adhere it to the front of the body as shown by the imaginary line in the figure. Thereby, subsequent work on the special work line can be performed by the worker reading the card, and the card is removed at the end of the special work together with confirmation of the work.

The component supply device 290 in the metal line 4 is the fourteenth
As shown in the figure, parts such as doors and hoods corresponding to each skewer type are stored in parts stockers 91a to 91'', and self-propelled hangers 92a2, 92b and 92 are placed between the corresponding parts, respectively.
C is provided, and the hanger selects one of the opposing parts and suspends it from hanging machines 93a, 93b, and 93c provided for each.

The parts of the suspension machines 93a, 93b, and 93c are then transferred to the conveyor 94 and supplied to the metal line 4. Each of the self-propelled hangers 92a, 92b, 92c is a reading device 9.
It is controlled by a controller 96 which inputs the read output of 5R. In addition, if there are parts on the left and right sides, such as a door, the hanging e
l! When transferring from 93a, 93b, 93c to the conveyor 94, a time lag is provided so that the left and right parts come to the same position at the part assembly location of the metal line 4.

Once the assembly described above has been completed, the body will be transferred to the next process, which is the painting process and ship equipment assembly process, but the final assembled body will not meet the production schedule. In order to confirm whether there is enough or not, and to use for production control in the next process, as shown in Figure 15,
A final confirmation device 140 is provided that magnetically reads the ferromagnetic material-containing paint 37 with a reading device 141R and sends it to, for example, a central control room that controls the coating process. Thereafter, the fish is lifted up by the lift device 144 and transported to the next process.

FIG. 16 is a schematic plan view of the painting line and wiring line. The work passing through the metal line 4 is checked by the confirmation device 140
After passing through, it is temporarily stored in a white body storage 501 and sent to the painting line 5. This painting line 5
These include a pretreatment booth 502, a draining and drying booth 503, an undercoat booth 504 for electrodeposition, a baking booth 505, a Melsheet booth 506 that includes processes such as setting soundproofing Melsheet, a baking booth 507, a polishing booth 508, and an intermediate coating booth 509. , baking booth 510, sharpening booth 51
After passing through 1, there is a top coating booth 520 and a baking booth 53.
'Sent to O. The workpiece that came out of the sharpening booth 511 is
The reading device 521R magnetically reads the magnetic record in which vehicle type information is recorded.

In the top coating booth 520, as shown in FIG. 17, a top machine 522 is provided with a coating gun 523, and this gun 523 moves in the left and right directions with respect to the traveling direction of the workpiece. A side machine 524 is downstream of the top machine 522. '
524 are provided, and each painting gun 525.
525 is provided.

An air hose 526, an automatic color change device 527, and a high pressure generator 528 are connected to this paint gun 525. The high voltage generator 528 applies high voltage to the spray gun 525 or 523 for electrostatic painting.
The automatic color change @527 is for changing the paint to a predetermined color in response to a signal from the reading device 521R. If it becomes necessary to apply a new color of paint, first spray the paint used on the previous workpiece, clean the gun 523, 525 with a solvent such as thinner, and then use the automatic color change device 527. A paint of the desired color is selected. These operations are driven by each device based on a signal from the reading device 521R.

The workpieces that have passed through the painting line 5 are sent to the anchorage assembly bay 6. In order to confirm which work is currently flowing at the first stage of the equipment assembly line 6, a reading device 601R is provided, thereby confirming the work at that location. Next, the workpiece is temporarily stored in the point body tray, Shiro 02, and then heads to the inn 630 where it is stored. Then, at the beginning of the equipment line 630, the vehicle type information is read by the reading device 610R. At this time, since the painting is completely done in the painting line 5, the paint containing ferromagnetic material cannot be read optically, but the vehicle type information can be read magnetically even from above the paint. The reading device 610R is provided at the first step of the la@ line 630, and the control device 621 is provided at the first step of the instrument line 620. When the reading device 610R reads the vehicle type information for the workpiece that has arrived at the equipment line 630, the command signal is sent to the control device 621, and the first
In the process, the control device 621 instructs the assembly of the instrument. In this way, the repair line 630 and the instrument line 620 are operated in synchronization with the installation M610R and 621. The equipment line 630 also includes reading devices 611R, 612R, and 631R as desired.
, 632R are provided, and a display device is provided to display the contents read by these reading devices in order to display each vehicle type to the operator. The workpieces that have passed through the equipment line 630 are sent to the suspension assembly line 640, and then pass through the general assembly line 650, final line 6601, and rear axle line 680, where the automobile is finally completed. And each line also has reading devices 633R, 661R, 67.
1R is provided, and at the same time the paint 37 is read magnetically, a display is displayed according to the content. Further, 670 indicates a tire supply line, 672 indicates a road wheel, 673 indicates a tire, and 681 indicates an engine supply line.

Furthermore, it goes without saying that the method of selecting and taking out components in each component supply device and the specific method of processing work on the line may be modified as appropriate.

As mentioned above, when manufacturing vehicle models with different specifications, models, standards, etc. on a common line, the present invention displays vehicle model information such as applicable specifications, models, standards, etc. for parts set on the line in the initial process. Automobile production management in which the parts are sequentially read by an automatic reading device as they move through each process on the line to be identified, and work instructions for each process are given based on these identification signals. In the system, the vehicle type information is stored by painting a part of the car body with paint containing ferromagnetic material and then magnetizing the painted area, so work related to displaying and reading the car type information is required. This has the effect of making it easier to carry out the process, and also increasing the density of the vehicle type information.

[Brief explanation of drawings]

FIG. 1 is a conceptual diagram of the entire assembly process of an example in which the system of the present invention is applied to the assembly process of an automobile body.
The figure is a perspective view of the body assembly parts, Figure 2 is a schematic plan view of the assembly process, Figure 3 is a plan configuration diagram of the ferromagnetic material-containing paint coating equipment, Figure 4 is a perspective view of the equipment, and Figure 5 is Figure 6 is a front view of Figure 5, Figure 7 is a plan configuration diagram of the point device, and Figure 8 □ is a cross-sectional view showing the state in which the ferromagnetic paint is applied to the body. Plan configuration diagram,
Fig. 9 is a schematic perspective view of the main parts of the device, Fig. 1o is an overall perspective view of the marking device, Fig. 11 is an enlarged side view of the marking head, Fig. 12 is an enlarged broken sectional view of the print head, and Fig. 14. 15 is a perspective view of the final confirmation device for body assembly, 16 is a schematic plan view of the painting line and equipment line, and 17 is a perspective view of the top coating booth. It is a diagram. 1... Floor main line, 2... Body main line, 3... Special work line, 4... Metal line, 5... Painting line, 6... Repair line, 3o...
・Ferromagnetic material-containing paint coating device, 37...Ferromagnetic material-containing paint, 50.70.9'O...Parts supply device, 1oo
... Point device, 110 ... Automatic marking device, 13
0...Special work instruction device, 51R, 71R, 95R,
108R, 111R, 131R, 141R...reading device. Figure 1, Figure 1B, Figure 7, Figure 1G, Figure 5, Figure 6f. Figure 17 Hand M Nem Masa 11 (Voluntary) February 4, 1980 Commissioner of the Patent Office Shima 1) Haruki Tono 1, Indication of the case 1981 Patent application No. 163,404N2, Name of invention Automobile production control 3. How to display vehicle type information in the system 3. Person making the amendment 4. Explanation for the agent and JI card 6 and 7. Brief description of the drawings 7. Details of the amendment (1. The "How to display vehicle type information in the automated production costing system" has been corrected to "Φ type in the automobile production management system." (2) Memorandum, page 2, line 10, same. Line 15, Page 3, No. 1
Line 2, line 17, page 4, line 9, line 14, page 21
``Indication j'' on lines 5 and 13 of the same page will be corrected to ``Grant.'' (3) "Part of the vehicle body" written in line 1116 of the Memo M and line 10 of page F21 will be corrected to "parts." (4) Add ``Figure 14 is a perspective view of the special work fingerclaw device'' in front of J and ``Figure 13 is a perspective view of the special work fingerclaw device,'' as stated in page 22, line 9 of the specification. (5) The description of the scope of patent claims will be corrected as shown in the attached sheet. 2. Scope of Claims (1) When manufacturing vehicle models based on specifications, models, standards, etc. on a common line, vehicle models with applicable specifications, models, standards, etc. for parts set on the line in the initial process. Information 1
1. Vehicle production management in which the vehicle model information is sequentially read and identified by an automatic reading device as the parts move through each process on the line, and work instructions for each process are given based on these identification signals. Vehicle type information in an automobile production management system, characterized in that the vehicle type information is stored in the system by painting a paint containing a ferromagnetic substance on the first part and then magnetizing the painted part. 1 method. (2) The H'i method for vehicle type information in an automobile production control system according to claim (1), characterized in that the paint is applied in the form of a bar code. (3) Apply an insulating material between the paint and the car body! Claims (1) or (2) characterized in that A.
11 methods for obtaining vehicle model information in the self-help production management system described in Section 1.

Claims (3)

[Claims] (1) When manufacturing vehicle models with different specifications, models, standards, etc. on a common line, display the vehicle model information such as the applicable specifications, models, standards, etc. for the parts set on the line in the initial process, and In an automobile production control system, the vehicle type information is sequentially read and identified by an automatic reader as the vehicle moves through each process on the line, and work instructions for each IN are issued based on these identification signals. A method for displaying vehicle type information in an automatic production control system, characterized in that the vehicle type information is stored by painting a part of the paint with a paint containing a ferromagnetic substance and then magnetizing the painted part. (2) A method for displaying vehicle type information in an automobile production management system according to claim (1), characterized in that the paint is applied in the shape of a bar code. (3) A method for displaying vehicle type information in an automobile production management system according to claim (1) or (2), characterized in that an insulating material is applied between the paint and the vehicle body.