JPH01104366A - Failure diagnostic device for automatic coating machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a failure diagnosis device for an IJJ paint machine for automobile bodies.

Conventional technology 1I111 crimes of automobile body painting machines are generally carried out using the following counting method. In other words, the control of the coating machine
(The device is a car body conveyed by a conveyor, hereinafter referred to as a body). When the coating start switch is operated, the pulse train from the pulse generator sent by the operation of the conveyor is counted, and the coating is applied according to the count. The body is painted by synchronizing the movement of the body by the conveyor with the count value and controlling the spray gun and its auxiliary equipment according to the set data on how the machine's spray gun should follow.

Problems that the invention aims to solve: However, the control device of the paint sprayer operates the spray gun etc. in an open loop based on the data set by the count method, and there is no feedback control; Even if there are no errors in the data, problems such as uneven coating may occur if there is a delay in the operation of the spray gun, etc. Also, because the operation of the spray gun, etc. is not monitored, such problems may occur. It was difficult to determine the cause.

The present invention solves the above-mentioned problems, and allows necessary control equipment data to be kept at all times. ! I piled it up and took it out in case of an abnormality. It is an object of the present invention to provide a failure diagnosis device for an automatic coating machine that can find five causes.

Means for Solving the Problems In order to solve the above problems, the present invention provides a data processing device connected to a controller that controls a coating machine, a recording device connected to the data processing device, and a data processing device connected to the data processing device. and a CRT connected to a processing device, and the data processing device collects data of the control equipment of the paint sprayer through the controller according to the set items and requested time, and stores the data in the recording device. The data of the set items is read out from the recording device and reproduced on the CRT using a time chart.

Operation According to the above configuration, the data of the necessary controller 1IIIR is transferred to C.
By reproducing the time chart on the RT screen,
The operation order and operation time of multiple control devices can be seen at a glance.

Therefore, when a problem occurs, the controller that is operating abnormally can be easily discovered using this time chart.
You can pinpoint the cause of the problem.

Example Hereinafter, one embodiment of the present invention will be described based on the drawings.

Figure 1 shows a schematic diagram of the body vJ paint system.

In FIG. 1, when a body 3 is conveyed by a conveyor 2 in a booth 1 that is suitably air-conditioned for painting and operates a painting start switch 4, a sequence controller (jX
(referred to as the lower sequencer) 5 subtracts the pulse train from the pulse generator β sent by the operation of the conveyor 2 and calculates the number 11 (
count). Sequencer 5 is for body 3,
As shown in FIG. 2, the top gun 8 is attached to the top machine 7 so as to be able to swing vertically and horizontally, and is attached to the top gun 8 for painting the upper surface of the body 3, and as shown in FIG. The side gun 10, which can be attached freely and paints the side surface of the body 3, registers and stores the position (pulse train count) and how it should follow, and the conveyor 2 moves the body 3 accordingly. Top Gun 8, Side Gun 10 and Top Gun 8 in synchronized counting with
The top gun 8 and the side gun 10 are controlled by driving the control equipment of the incidental equipment of the side gun 10.

A fault diagnosis device 11 is connected to the sequencer 5.
The fault diagnosis g@ii is performed by the sequencer 5 as shown in Fig. 4.
1, a CRT (display) 13 connected to the data processing device 12, and a magnetic disk storage device e114 connected to the data processing device 111 w112.

First, the data collection operation of the failure diagnosis device 11 will be explained. First, data processing equipment r! ! 12, set the items of the control al1 equipment to be data collected, the data collection start time, and the request time (interval). Then, data processing lJJ! The device 12 samples the data of the control equipment items targeted for data collection through the sequencer 5 at intervals from the data collection start time, and sequentially records the data on the magnetic disk recording device file 4. The data file of the magnetic disk recording device 14 is in a loop, and when the data file becomes full, the data is updated sequentially starting from the first file, so the data is always updated backwards to, for example, several hours ago. Accumulating data.

Next, the data reproducing operation of the failure diagnosis device 11 will be explained. The data processing device 12 reproduces the collected data on a CRT 13 in the form of a time chart. Control +
Figure 5 shows an example of device data (MAX 20 points) displayed as a bar graph on the CRT 13.The bar graph display indicates whether the data is 0 or greater than O by turning the bar graph on or off. For example, when the valve is open (data is 1), a bar graph between the valves is displayed. Also, the data value at the right end of the bar graph is displayed to the left of the bar graph.

First, data processing t, 1! The items of data collected in the magnetic disk recording device 14 to be displayed in the storage 12 and the time of the collected data at which the retrieval of this data is to be started are set. Then, the data processing device 12 reads the data of the data item set from the start time from the magnetic disk recording device 14, and displays it as a bar code on the screen of the CRT 13 with 1 data/1 dot as shown in FIG. do. Then, J3 is on the CRT13 screen, and the start time is postponed.
When backtracking is specified to the data processing device 12, the data changes over time, and when the number of dots is further specified, one data is enlarged to several dots and the details of the data are enlarged and displayed.

A method for diagnosing a failure using such a data reproducing operation will be described. When a problem occurs in the automatic coating machine system, the data items of multiple control devices at the location of the problem and the time when the problem occurred are set in the data processing device 12, and the data at the time of the problem is displayed on the screen of the CRT 13. Reproduce as a chart. Then, you can see at a glance the operation order and operation time of multiple control devices that have been set.
Controls that behave abnormally can discover the vessel. For example, in Fig. 5, when the controller No. 210 turns off at time t2, it turns off at time t1, which indicates the cause of the malfunction, e.g. It is possible to determine that the cause of the malfunction is in the timer, and a 11!5 diagnosis can be performed.

Next, another data reproducing operation of the failure diagnosis device 11 will be explained. The data state of a specific data item among the data items of the control device and the data items to be displayed on the data processing device v112, for example, whether the data is 0 or 1, is set. Then, the data processing device 12 continues processing the magnetic disk 8 [! The data file of the recording device 14 is searched, and if found, all the data items set from the found time are reproduced using bar food.

Due to such a playback operation, the fl,?
Even if the time is unreliable, it is presumed to be a prisoner.
υJIIIljl which is the start of one device or operation
By setting the data state of W and narching the data file, the time chart is reproduced when the data is in the set state, and multiple 1! By looking at the operating order and operating time of the IIJIII equipment, the cause of the failure can be ascertained.

Effects of the Invention As described above, according to the present invention, by collecting data on set items and reproducing the data on the set items on a CRT in the form of a time chart, the order of operation of a plurality of controllers can be adjusted. , the operation time was checked at first glance, and the control was operating abnormally.
The aIIt device can be discovered and the cause of the failure can be determined.

[Brief explanation of the drawing]

1 to 5 show one embodiment of the present invention, and the first
The figure is a schematic diagram of the automatic coating machine system, Figure 2 is a schematic front view of the top machine, Figure 3 is a schematic front view of the side machine, Figure 4 is a diagram of the failure diagnosis device, and Figure 5 is the CRT screen. It is a diagram. 11... Sequence controller, 12... Failure diagnosis device, 13... Data processing device, 14... CRT
, 15...Magnetic disk recording device 0 Agent Morimoto I HiroshiFigure 2Figure 3Figure 1Neil☆i Taka
IL J So

Claims (1)

[Claims] 1. Consisting of a data processing device connected to a controller that controls a paint sprayer, a recording device connected to the data processing device, and a CRT connected to the data processing device, the data processing device Data on the control equipment of the paint sprayer is collected through the controller and stored in the recording device according to the set items and the requested time, and the data of the set items is read out from the recording device and recorded on the CRT in a time chart. A failure diagnosis device for automatic painting machines that reproduces images.