JP3270023B2 - Workpiece identification system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a workpiece identification system for identifying a workpiece on a processing line.
The present invention relates to a workpiece identification system suitable for identifying individual workpieces, such as building boards, whose appearance changes one after another in a manufacturing process on a processing line.

[0002]

2. Description of the Related Art In a conventional continuous processing line, the shape and color tone of a semi-finished product which is completed each time each manufacturing process is completed are often changed each time. For example, in a continuous coating line for building boards, although the shape of the original plate of the building board to be processed does not change, the color tone surely changes each time one process is performed. As described above, in general, in a continuous processing line, after each manufacturing process, a semi-finished product, which is a finished product there, undergoes some external change compared to a finished product in an earlier manufacturing process. There are many cases.

In such a case, inspection is performed at each stage of the manufacturing process to identify each individual building board. Instead, the process proceeds to the final stage, and an inspection process is provided at the final stage. In most cases, the finished product is inspected, a unique serial number is entered into the building board, and each building board is identified by the serial number in the finished product. This seems to be due to the fact that it is difficult to prepare conditions for the inspection during the processing. For example, if the inspection object does not travel at a fixed position on the transport line or comes out of the drying process, it will necessarily be accompanied by a physical change such as a temperature change with time, and in some cases a chemical change. It is sufficiently conceivable that this is caused by the fact that the state of the inspection object is not a stable state.

[0004]

However, when a defect is found in the finished product afterwards and the cause is to be traced, the manufacturing factory and the date and time of completion can be specified from the serial number. However, since it is impossible to track under what kind of manufacturing conditions the building board is actually manufactured in each of the manufacturing processes, the root cause of the failure cannot be pursued. The present invention has been made in view of the above problems, and in the process of manufacturing a continuous processing line, even in the case of a workpiece that changes its appearance,
An object of the present invention is to provide a workpiece identification system that can identify individual workpieces and record manufacturing conditions and the like.

[0005]

According to the present invention, there is provided a workpiece identification system comprising: first detecting means for detecting a workpiece in a predetermined step on a processing line; and the first detecting means detecting the workpiece. First time measuring means for measuring the time at which the
Calculating means for calculating a scheduled carry-in time of the workpiece to the next step based on the time measured by the time measuring means; a second detecting means for detecting the carry-in of the workpiece in the next step; (2) a second time measuring means for measuring the time at which the detection means has detected the workpiece, and a check for providing a predetermined detection width to confirm whether the time measured by the second measuring means can be regarded as the scheduled loading time. Means for identifying surface image data of the workpiece after the workpiece has been carried out of the process by means of a step and a time at which the workpiece passes through the step; and the identifying means. And display means for displaying the surface images of the plurality of workpieces identified by the method in association with the plurality of processes.

The first detecting means detects that the workpiece is carried in to a predetermined process and detects that the workpiece is carried out of the process, so that the identification information can be detected between the preceding and following processes. Delivery is easy. Further, the first detecting means detects the leading end and the trailing end of the conveyed workpiece, thereby facilitating the transfer of the identification information between the preceding and following steps.

[0007]

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG.
1 is a top view showing a partial schematic configuration of a continuous machining line suitable for applying a workpiece identification system according to an embodiment of the present invention. Here, the building board 1 is used as a workpiece.
Will be described as an example. In the direction of arrow A1, the original plate of the building board 1 is first carried into the manufacturing process (1), and is inspected in the inspection process (1) in which the processing of the manufacturing process (1) is completed and the inspection of the manufacturing process (1) is performed. After receiving the inspection, it is carried into the manufacturing process (2), the processing of the manufacturing process (2) is completed, the inspection of the manufacturing process (2) is performed, the inspection is performed at the inspection process (2), the direction is changed here, and the manufacturing process is performed. After being carried into (3), the processing in the manufacturing process (3) is completed, the inspection is performed in the inspection process (3) for inspecting the manufacturing process (3), the direction is further changed, and the next manufacturing process is started. It is carried out in the direction of arrow A3.

A large number of building boards 1 are inserted intermittently at predetermined time intervals into a continuous processing line. From then on, through a number of processing steps, it will eventually be taken out of the processing line,
Each building board 1 runs independently on one continuous transport line. Note that there is a predetermined upper limit for the total number of storage plates when the transfer line is operated in a steady state.

On the other hand, regarding each process, the time at which a certain building board 1 is carried into the process and the time at which the building board 1 is carried out of the process are determined by processing the individual building boards 1 in the process. It can be represented by an absolute value of time (a time that is ticked every time means that it never returns). In the other steps, the loading and unloading of the building board 1 may occur at the same time. However, as far as the process is concerned, the loading and unloading times of the individual building boards 1 are the same. Building board 1
It is a value unique to. This will be described specifically.

For example, consider the case where the machining line is operating in a steady operation state. In step 1, at time 10: 0
The building board 1 carried in at 0 minutes is as scheduled at time 10: 1.
If the building board 1 is unloaded at 0 minutes, the processing performed by the building board 1 in the step 1 for 10 minutes is represented by the following three data [step number = 1, step loading time 10:00 minutes, step loading time 10:10] Minutes]. In the meantime, it is specified that the building board 1 is located in the process 1 and has been processed there.

[0012] If the building board 1 is unloaded at 10:15 minutes, there is a possibility that some abnormality has occurred during the process or in another process. Specifically, the process line was temporarily stopped due to a failure in the process, or the process line was temporarily stopped due to the line being stopped in another process. In such a case, the unloading time is delayed. Therefore, just knowing the unloading time
It is not possible to specify whether or not the building board 1 to be inspected from now on has been processed in a steady state.

FIG. 2 is a diagram showing a schematic configuration of a main part of a continuous processing line according to the present embodiment. The photoelectric switch SW1 is
When the building board 1 enters the direction of the arrow A and the tip of the building board 1 blocks the light of the photoelectric switch SW1, it is detected that the building board 1 has started being carried into the manufacturing process (n), and the rear end of the building board 1 is detected. When the unit no longer blocks the light of the photoelectric switch SW1, the manufacturing process
(n) is detected, the end time tie (n) is measured, and the scheduled start time tee from this manufacturing step (n) is measured.
s (n) is calculated in advance. When the tip of the building board 1 blocks the light from the photoelectric switch SW2, the photoelectric switch SW2 detects that the building board 1 has been started to be unloaded from the manufacturing process (n),
The unloading start time tes (n) is measured, and the scheduled unloading start time te
Check unloading in comparison with s (n). When the rear end of the building board 1 does not block the light from the photoelectric switch SW2, the end of unloading from the manufacturing process (n) is detected, and the unloading end time tee (n) is measured. The scheduled carry-in start time teis (n + 1) to (n + 1) is calculated in advance. In the photoelectric switch SW3, the building board 1 is inspected in the manufacturing process (n).
When the tip of the switch blocks the light of the photoelectric switch SW3 through (n), it detects that the building board 1 has started to be brought into the manufacturing process (n + 1), and measures the start-of-loading time tis (n + 1). The carry-in is checked in comparison with the carry-in start time teis (n + 1).

As described above, the carrying-in time is measured, and when the building board 1 is carried out at the scheduled carrying-out time, inspection, that is, image data acquisition is performed. By being carried in at the scheduled time to be carried into the next process, it can be understood that the building board 1 is to be processed in the next process.

As described above, the target building board 1
Measurement of the loading time into the process, measurement of the unloading time of the building board 1 from the process, and determination of whether or not the building board 1 was actually unloaded from the process at the scheduled unloading time based on the measured loading time. In the present invention, the execution of the process inspection performed thereafter and the determination of whether or not the building board 1 has been carried in at the scheduled carry-in time to the next process based on the measured carry-out time are determined in the present invention. Is controlled and executed by a “process management controller” that manages the information.

The scheduled unloading time and the scheduled loading time to the next process are calculated prediction values, and when confirming the actual time determination, a slight deviation in the running time due to the slippage of the transporting means or the like may occur. In consideration of the possibility of occurrence, a certain detection width is provided.

In this manner, the individual building boards 1 specified as the building boards 1 processed in a certain process and the surface image data of the building boards 1 acquired after the processing (still image data Is one to one)
And is stored and recorded on a recording medium as surface image data associated with the next “plate specifying key”. The board data specified by the board holding key is as follows.

Plate holding key 1: d1 [step 1, carry-in time ti (1), unloading time te (1)], plate holding key 2: d2 [step 2, carry-in time ti (2), unloading time te (2) )], ‥‥‥ Plate holding key n: dn [process n, carry-in time ti (n), carry-out time te (n)] (n = 1, 2, 3, ‥‥‥, N)

Then, the surface image data Pn obtained for the plate data n specified by the plate specifying key
(N = 1, 2, 3,..., N) are stored in a one-to-one correspondence. In the present embodiment, the accumulation of the image data on the surface of the building board 1 is recorded by data compression (for example, JPEG) on a hard disk HDD controlled by each process management controller. By doing so, the recorded surface image of each building board 1 can be extracted as an image data file.

FIG. 3 is a diagram showing a schematic configuration of the inspection process of the present embodiment. Step management controller 100 (FIG. 6)
Are described in detail in the following.) Each of the times from the photoelectric switch SW1 (for measuring the carry-in time of the previous process), the photoelectric switch SW2 (for measuring the carry-out time of the previous process), and the photoelectric switch SW3 (for measuring the carry-in time of the next process) The building board 1 is identified. The building board 1 conveyed from the previous process by the conveying roller 31 is scanned at a predetermined sampling rate by the CCD line sensor camera 1.
1, the surface of the building board 1 is photographed. Image data obtained by shooting is stored in the hard disk HDD 16 as needed. The start and stop of the sampling of the image data are determined by the photoelectric switch SW4 provided for detecting that the building board 1 passes the position directly below the CCD line sensor camera 11.

FIG. 4 is a diagram showing a detailed configuration of the CCD line sensor camera 11. As shown in FIG. Photographed by optical system 41, CCD
The photoelectric conversion is performed by the line photo sensor 43 driven by the drive circuit 42, the analog signal is converted to a digital signal by the A / D converter 44, and the RGB data is converted to the line image memory 4.
5, and temporarily transferred to the composite image memory 12 of the process management controller 100. At this time, when the traveling speed of the building board 1 is 60 m / min (1 m / sec), if the resolution is 5 mm, a line reading pulse is given every 5 (mm) / 1 (mm / msec) = 5 msec. (The rate is 2
00 PPS).

FIG. 5 is a diagram for explaining the accumulation of image data in the composite image memory 12. Although an R (red) signal is shown here, the same applies to a G (green) signal and a B (blue) signal. The line image memory 45 stores F
IFO (First-In-First-Out)
The data is read out according to the line read pulse, compressed, and written to the image compositing memory 12 in the process control controller 100. At this time, the line data l ₁ , l ₂ ,
Although writing is performed in a state in which not only the board image data but also the background image data are added as in l ₃ , ‥‥‥, and l _n , the data is processed in later data processing. In this way, the board images to be inspected are synthesized.

FIG. 6 is a diagram showing a configuration of the process management controller 100 and the production management controller 200 according to the present embodiment. Details of the operation will be described with reference to the flowchart of FIG. The local main control unit 101 including the communication control unit 27 receives the control signal from the production management controller 200 by the receiving circuit 28 via the control channel (Cch) of the transmission line, and controls the individual control modules as a whole. Photoelectric switches SW1 to SW3, 2 and timer (1)
(2) The board specifying unit 4 identifies and specifies each building board 1 by 3 and stores it in the memory 5. Using the timers (3) and (6) for the specified building board 1, the abnormality judging unit 7 judges an abnormality in running and stores it in the flag register 7a. The sampling control unit 10 includes a photoelectric switch SW4,
The sampling of the CCD line sensor camera 11 is controlled at a predetermined sampling rate according to signals from the timer 8, timers (4) and 9, and the abnormality determination unit 7. The image synthesizing memory 12 synthesizes and accumulates the line image data from the CCD line sensor camera 11, and the data compression unit 15 compresses the data and accumulates the data on the hard disk HDD 16, and also accumulates the control information on the hard disk HDD 16, The transmission image data processing unit 17 processes the image data for transmission, digitally modulates the image data with the digital modulation circuit 21, converts the frequency for transmission with the transmission CH frequency conversion circuit 22, and The data is transmitted to the production management controller 200 via the data channels (ch1 to chn) of the transmission path.

On the other hand, the production management controller 200 receives the transmission data in the receiving circuit 63 and controls it in the main control unit 70 having the communication control unit 74, and transmits necessary control signals by the transmission circuit 73 to the control channel of the transmission path. (Cch). The multiplexing circuit 23 is bidirectionally connected to the inter-process connection transmission line. The data transmission system will be described in detail with reference to FIG.

FIG. 7 is a flowchart illustrating the operation of the process management controller 100 according to the present embodiment. First, it is determined whether or not the system power is ON (step S1).
If it is, it waits until the system power is turned on. YES
If so, initialization is performed (step S2). Next, in step S3, network communication control is performed.
In step S4, plate identification control is performed (to be described in detail with reference to FIG. 8).
In step 5, line image data sampling and image synthesis control are performed (detailed in FIG. 9), data transmission control is performed in step S6 (detailed in FIG. 10), and system stop processing is performed in step S7 to end the flow. I do.

In the system stop processing (step S7),
It is determined whether t ₂ = unloading time te (n) (unloading start time tes (n) or unloading end time tee (n)) is abnormal (step S).
11), if there is no abnormality in NO, t ₃ = loading time ti (n
+1) (import start time tis (n + 1) or import end time ti
e (n + 1)) is determined to be abnormal (step S1).
2) If no abnormality is found in NO, the process returns to step S11 to continue the abnormality monitoring, and then proceeds to step S11 or step S12.
In if there is abnormality in t ₂ or t ₃ YES, the instructed examination interrupted sampling control unit 10, the production management controller 200 to effect contact of the navel (step S13). Note that the result of the abnormality determination is recorded in the flag register 7a. Here, the timer (3) is started (step S
14), and determine whether or not to restart the inspection (step S1)
5) If YES to restart the inspection, step S
If it returns to 11 and does not resume with NO, the timer (3)
It is determined whether or not a predetermined time for stopping the system has elapsed (step S16). If NO, the predetermined time has not elapsed, and the process waits until the predetermined time has elapsed. The process is executed (step S17), and the flow ends.

FIG. 8 is a flowchart for explaining the operation of the board specifying unit 4 of the present embodiment (see FIG. 2). First, it is determined whether the photoelectric switch SW1 is ON (Step S).
21) If NO and not ON, wait until turned ON,
If the photoelectric switch SW1 is turned on in YES, the carry-in time t ₁ = ti (n) (the carry-in start time tis (n) or the carry-in end time tie (n)) is determined and recorded (step S22), and the timer ( 1) is started (step S23). Here, it is determined whether or not a predetermined time corresponding to the time until the unloading time has elapsed (step S24). If NO has not elapsed, the process waits until it has elapsed. If YES has elapsed, the photoelectric switch SW2 is turned off. It is determined whether or not it is ON (step S
25) If NO and not ON, wait until turned ON,
If the photoelectric switch SW2 is turned on at YES, then
It is determined whether or not the photoelectric switch SW2 has been turned off (step S26), and if it is not OFF, the process waits until it is turned off, and if YES, the photoelectric switch SW2 is turned off.
, The unloading time t ₂ = te (n) is determined and recorded (step S27), and it is determined whether or not t ₂ can be regarded as the scheduled unloading time (step S28). Then, the process proceeds to stop of the system (FIG. 7), and if YES, it can be regarded as the scheduled unloading time, the timer (2) is started (step S29), and it is determined whether the photoelectric switch SW3 is ON (step S30). ), If it is not ON at NO, it waits until it turns ON, and if YES, the photoelectric switch S
If W3 is to ON, the next step loading time t ₃ = ti (n +
1) is determined and recorded (step S31), and it is determined whether or not t ₃ can be regarded as the scheduled unloading time (step S32).
If the answer is NO, the process proceeds to system stop (FIG. 7). If the answer is YES, the process returns to step S21.

FIG. 9 is a flowchart for explaining the operation of image data sampling and image synthesis control according to this embodiment (see FIG. 3). First, it is determined whether or not the tip of the building board 1 has reached the vicinity immediately below the CCD line sensor camera 11 based on whether or not the photoelectric switch SW4 is ON (step S41). When the photoelectric switch SW4 is turned on with YES, the timer (4) is started (step S42), and it is determined by the timer (4) whether or not a predetermined time appropriate for starting sampling has elapsed. (Step S43) If NO, the process waits until the process has elapsed, and if YES, samples line image data (Step S44) and records the sampled data (see FIG. 4). (Step S45), after the images are combined (see FIG. 5) (Step S46), the data is compressed and stored in the hard disk HDD 16 (Step S47). further,
The image data is processed into transmission image data (step S48), and it is determined whether the photoelectric switch SW4 has been turned off after the building board 1 has passed (step S49).
If not, the main control unit 70 (described in FIG. 12) of the production management controller 200 determines whether or not there is an instruction to interrupt the inspection (step S50).
If there is no interruption instruction in O, the process returns to step S49, and YE
If there is an interruption instruction in S, the process proceeds to step S14 (FIG. 7). If YES in step S49, the photoelectric switch SW4 is turned on.
If it becomes FF, the process returns to step S41, and waits for the next time the photoelectric switch SW4 is turned on.

FIG. 10 is a flowchart illustrating the operation of data transmission control according to the present embodiment. First, it is determined whether or not there is an instruction on image data for transmission from the production management controller 200 (step S61), and if there is no instruction with NO, it is determined whether or not there is a transmission request for stored image data from the production management controller 200. Is determined (step S6).
2) If NO, and there is no transmission request, the process proceeds to step S66.
6 and reads the corresponding image data (step S6).
3) Go to step S67. YES in step S61
If there is an instruction, the contents of the instruction are notified to the transmission image data processing unit 17 (step S64), and it is determined whether the processing of the transmission image data is completed (step S65).
If not, wait for completion and YES
Is completed, the carry-in time t ₁ = ti (n) and the carry-out time t ₂ =
te (n), the presence / absence of abnormality and the image data for transmission are read (step S66), and the transmission data is transmitted according to the transmission instruction from the communication control unit 27 (step S67). Here, it is determined whether or not there is an instruction to interrupt data transmission from the production management controller 200 (described with reference to FIG. 12) (step S68). If NO, the process returns to the first step S61, and if YES, returns to step S61. If there is an instruction to interrupt, the data transmission is interrupted (step S69), and it is determined whether or not there is an instruction to resume data transmission from the main control unit 70 (step S70). If NO, the process returns to step S69. To continue the interruption, and if there is a resumption instruction in YES, the process returns to step S66.

FIG. 11 is a diagram for explaining an overall image of each transmission data according to the present embodiment. The data display is "temporary plate number-process number". The time axis A indicates data when the building board 1 moves with time in a specific process. For example, in step 3, “1-
3 ”,“ 2-3 ”,“ 3-3 ”, etc.
It is shown that a few building boards 1 are carried in and out with time. Further, the time axis B indicates data when the specific building board 1 is conveyed to each process with time. For example, with respect to the building board 1 of the temporary board number 3, "3-1", "3-2", and "3-3" indicate that the building board 1 is carried in and out of each process.

The vertical time axis A is independent for each step, and in that step, it is impossible that different building boards 1 exist at the same time. Also, the position of the transmission data on the time axis B for each building board 1 never overlaps on the time axis B because the boards come out after being processed in each process in order.

A medium capable of securing the passage of time of an electric signal can be a signal transmission path. Therefore, the time axis A and the time axis B
, The transmission data for each building board 1 are arranged on an independent time axis B, and the respective transmission start times are set in the first process 1
Is defined as a point on the time axis A, the processing history of a certain plate can be grasped as a change in the surface plate processing data.

According to the above concept, a transmission channel is assigned to each building board 1 and each process management controller 10
0 transmits the processing history of one building board 1 as image data to a production management controller at a remote location by sequentially controlling the board image data obtained and processed by the assigned channel. Becomes possible.

FIG. 12 is a diagram showing a configuration of the transmission system and the production management controller 200 according to the present embodiment.
For example, the process management controllers 100 in the processes (1) to (n) of the A production line are connected by a multiplex transmission line 61 using a coaxial cable, and further connected to a production management controller 200 via a connector 62. . The control channel Cch (bidirectional) is used for control signal transmission, and the data channels ch1 to chn are used for data transmission. The production management controller 200 receives the data at the receiving circuit 63, demultiplexes the data at the demultiplexing circuit 64, detects the multiplexed data at the detection circuit 65, digitally demodulates it at the digital demodulation circuit 66, and stores it in the reception data storage memory 67. The image data is stored, image-synthesized, and stored in the image synthesis memory 68. In response to an instruction from the keyboard 72, the main control unit 70 displays a composite image on the display 71 (for A-line to N-line) as necessary. The control signal is transmitted from the main control unit 70 to the transmission path by the transmission circuit 73 and received by each process management controller 100.

FIG. 13 is a diagram showing an image file stored in the reception data storage memory 67 of the present embodiment.
Basically, the board image data shown in FIG. 11 is stored. Construction board 1 of temporary board number 1 transmitted through ch1
The data in each of the steps 1, 2,..., N is stored as an image file 1. Similarly, the data in each process 1, 2,..., N of the building board 1 of the temporary board number 2 transmitted through ch2 is stored as the image file 2.

FIG. 14 shows a display 7 according to the present embodiment.
FIG. 3 is a diagram showing a display example of a board image in FIG. Steps 1 and 2 of all the inspected plates of the inspected plate numbers 1, 2, 3 and ‥‥‥
Vertical scroll buttons 8
1. By operating the horizontal scroll button 82,
It can be displayed on one screen.

This makes it possible to relatively compare the change in appearance of the plate processed in each step, and even if there is no problem in the transport state, the processing of the same content is repeated many times. This makes it possible to detect the presence or absence of variations or the like that occur, and it is possible to obtain information useful for further stabilizing the processing steps.

Since the building board 1 in which an abnormality has occurred is displayed, for example, surrounded by a frame, it is possible to immediately know in which process, when, and when the abnormality occurred.

A window 86 for displaying the board unloading time is set in the lower left corner of the screen. When the cursor is placed on the display part of the corresponding building board 1 and the mouse is clicked, the unloading time is set. Is displayed.

A dialog box switch 83 for displaying an operation menu is provided at the upper left corner of the screen. Click here to display the operation menu and select a board image transmission in the menu to display the menu. Building board 1
The JPEG data stored in the hard disk HDD 16 is transmitted, decompressed and displayed at a predetermined position on the screen.

A display title bar 84 such as "Production line A" and a window 85 for displaying the number of boards being processed are provided. FIG. 15 is a flowchart illustrating the operation of the production management controller 200 according to the present embodiment. First, it is determined whether or not the system power is ON (step S81). If NO, the process waits until the system power is turned ON. If YES, initialization is performed (step S82).

Next, in step S83, network communication control is performed, and in step S84, it is determined whether or not there is an instruction by key input for board image data to be transmitted. When there is an instruction, the instruction about the image data for transmission is transmitted to each process management controller 100 (step S8).
5). Next, it is determined whether there is a key input of an instruction to transmit the storage board image data (step S86), and NO
If there is no instruction, the process waits until there is an instruction, and if YES, an instruction to transmit the storage plate image data is transmitted to each process management controller 100 (step S87). Next, it is determined whether or not there is a key input of an instruction to restart the suspended inspection (step S88), and if there is no instruction, the process waits until there is no instruction. An instruction to restart the inspection is transmitted (step S89). In step S90, it is determined whether or not transmission data from the process management controller 100 has been received. If NO, the process proceeds to step S95. If YES, the transmission data is received. The counter 69 counting for each line is counted up (step S91), and is stored in the reception data storage memory 67 as an image file at a predetermined position (step S92). Then, the image file is read and combined with the display image (step S93), and displayed on the display 71 (step S94). Next, in step S95, the process management controller 100 sends the JPE
It is determined whether or not the transmission data of the G file has been received.
If not, return to step S90 and YES
When the transmission data is received by the
As a JPEG file (step S9).
6). Then, the JPEG file is read and combined with the display image (step S97) and displayed on the display 71 (step S98). Further, the number of plates being processed is displayed in the display window 85 (step S99), and it is determined whether to stop the system operation (step S10).
0), if not stopped, continue if NO; if stopped, execute system stop processing (step S101) and end the flow. Note that the present invention is not limited to the above embodiment. The workpiece is
Anything, such as a furniture board or a door, is acceptable.

[0043]

As described above, according to the present invention, it is possible to distinguish individual workpieces which are difficult to distinguish in appearance, and to accurately determine the progress of each individual workpiece, for example, which process is proceeding. As well as processing after each process
The image data of the object can be identified.

[Brief description of the drawings]

FIG. 1 is a top view showing a partial schematic configuration of a continuous processing line suitable for applying a workpiece identification system according to an embodiment of the present invention.

FIG. 2 is a diagram showing a schematic configuration of a main part of a continuous processing line according to the present embodiment.

FIG. 3 is a diagram showing a schematic configuration of an inspection process according to the present embodiment.

FIG. 4 is a diagram showing a detailed configuration of a CCD line sensor camera.

FIG. 5 is a diagram illustrating the accumulation of image data in a composite image memory.

FIG. 6 is a diagram showing a configuration of a process management controller and a production management controller according to the present embodiment.

FIG. 7 is a flowchart illustrating the operation of the process management controller according to the present embodiment.

FIG. 8 is a flowchart illustrating the operation of the board specifying unit according to the present embodiment.

FIG. 9 is a flowchart illustrating the operation of image data sampling and image synthesis control according to the present embodiment.

FIG. 10 is a flowchart illustrating an operation of data transmission control according to the present embodiment.

FIG. 11 is a diagram illustrating an overall image of each transmission data according to the present embodiment.

FIG. 12 is a diagram showing a configuration of a transmission system and a production management controller according to the present embodiment.

FIG. 13 is a diagram illustrating an image file stored in a reception data storage memory according to the present embodiment.

FIG. 14 is a diagram showing a display example of a board image on the display of the present embodiment.

FIG. 15 is a flowchart illustrating the operation of the production management controller according to the present embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Building board 31 Conveyance roller 61 Multiple transmission path 62 Connector 81 Vertical scroll button 82 Horizontal scroll button 83 Dialog box switch 84 Display title bar 85 Number of boards being processed display window 86 Window for displaying the board unloading time

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B23Q 41/08 G05B 19/418

Claims (3)

(57) [Claims] A first detecting means for detecting a workpiece in a predetermined step on a processing line; a first time measuring means for measuring a time at which the first detecting means detects the workpiece; Calculating means for calculating a scheduled carrying-in time of the workpiece to a next process based on the time measured by the one-time measuring means;
Second detecting means for detecting the loading of the workpiece in the next step, second time measuring means for measuring the time at which the second detecting means detects the workpiece, and time measured by the second measuring means The workpiece is unloaded from the process by means of a confirmation means for confirming whether or not it can be regarded as the scheduled loading time by giving a predetermined detection width, and a process and a time at which the workpiece passes through the process. Identification means for identifying the surface image data of the workpiece later, and display means for displaying the surface images of the plurality of workpieces identified by the identification means in association with a plurality of steps. Workpiece identification system featuring. 2. The object according to claim 1, wherein the first detecting means detects that the workpiece is carried into a predetermined process, and detects that the workpiece is carried out of the process. Workpiece identification system. 3. The workpiece identification system according to claim 1, wherein said first detecting means detects a front end and a rear end of the conveyed workpiece.