JPH0312550Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention is a production instruction device used in a production line such as an automobile factory, which instructs workers in each process about parts to be assembled, installation locations, etc. Concerning instruction cards.

(Prior Art) In production lines such as automobile factories, various types of workpieces are transported on the same assembly line and different parts are assembled onto each workpiece. Therefore, in such a line, if accurate instructions are not given to the workers, assembly errors may occur. Therefore, in order to prevent assembly errors on these production lines, production instruction cards are transported along with the workpieces.
A production instruction device is employed that reads an information code punched into a production instruction card and instructs parts to be assembled according to the read content.

As a conventional production instruction device, for example,
As shown in the figure, a container 3 is installed on the production line in order to read the information code of the production instruction card 1 that is transported along the line with the workpiece.
A group of optical sensors are housed inside the container 3, and these sensors can read the information code of the production instruction card 1 passing through the passageway of the container 3. The signals read by the optical sensor group are supplied to the card reading device 5, and the card reading device 5 outputs production instruction information according to the information code punched in the production instruction card 1. As this production instruction information, for example, if the information is about assembling the parts in the parts storage box 7B to a workpiece, it is determined by the information code of the production instruction card 1 among the lamps 9A to 9D attached to the parts storage shelves 7A to 7D. The designated lamp 9B lights up. Therefore, when the workpiece is transported, the operator can assemble the parts in the parts storage box 7B corresponding to the lit lamp 9B onto the workpiece, thereby preventing the worker from assembling the wrong part onto the workpiece.

Since the production instruction card is read while being transported through the passage of the card reading device, a group of positioning holes are drilled in the production instruction card, and when this is detected, the information code is read. I try to do it.

(Problem that the invention aims to solve) However, with this conventional method, the information code is read once while the production instruction card is being transferred into the passage of the card reader, so it is difficult to avoid disturbances etc. There were cases where it could not be read accurately.

Therefore, recently, it is detected that the production instruction card has reached the information reading position by detecting the light passing through each positioning hole. The applicant has proposed a method in which the information code is read multiple times, the contents of each reading are compared, and the production instruction information is output in accordance with the read information code only when the contents of each reading match.

The present invention aims to provide a production instruction card suitable for applying this method.

(Means for Achieving the Objective) Therefore, the present invention provides a card body that is transferred through a card passage of an optical reading device, a group of holes for information codes representing production instruction information, and a group of holes for information codes in the group of holes for information codes. A group of positioning holes for detecting the information reading position at which reading is performed is bored, and the light passing through the group of positioning holes is formed within a section where the light passing through the group of holes for information code is detected. The present invention is characterized in that the information code hole group and the positioning hole group are arranged so that there is a detection section.

(Operation of the invention) That is, if such a configuration is adopted in accordance with the direction in which the card body is transported, the information code can be reliably read multiple times.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

First, in FIG. 1, 1 is a production instruction card according to the present invention, and 2 is the card body.

Card body 2 is 170mm long, 100mm wide, and 3mm thick.
It is roughly divided into a signboard section 2A and a code board section 2B, and a message to the worker is shown on the signboard section 2A.

Nine information code holes 22a to 22i and one parity check hole 24 are formed in a row in the upper part of the code plate part 2B as required. The information code holes 22a to 22i are used in the form of a binary coded decimal number, where the holes 22f to 22i indicate the lower digits, 22b to 22e the middle digits, and 22a the upper digits. 4 bits are assigned to each. The lower and middle digits can represent 0 to 9, and 199 types of information can be represented by the nine information code holes 22a to 22i. In the case of FIG. 1, the number 11 is represented by the holes 22a to 22i. Further, the parity check hole 24 is provided to maintain the reliability of information. In Figure 1,
By drilling holes 22e and 22i, decimal numbers can be
11, and since the total number of holes drilled here is an even number, no hole 24 is drilled.

Holes 22a to 22i are provided in the middle of the code plate portion 2B.
Positioning holes 30 to 32 are bored at a predetermined distance from a line connecting the center of the hole 24 and on a line parallel to the line.

Holes 22a to 22i drilled in the card body 2,
A group of optical sensors for detecting light passing through 24, 30 to 32 are arranged along the conveyance path of the production instruction card 20. That is, optical sensors 34A to 34I for reading information codes and optical sensors 36 for reading parity check codes are arranged corresponding to the array positions of holes 22a to 22i and 24, respectively. Also, positioning optical sensor 38A,
38B and 38C are arranged on a line a predetermined distance away from the array line of the sensors 34A to 34I and 36. Positioning sensors 38A to 38C are located in holes 30 to 38C.
They are arranged in correspondence with 32 drilling pitches.
Also, sensors 39 are located corresponding to both sides of the code plate section 2B and detect the inclination of the card body 2.
A and 39B are provided.

Holes 2 for information code and parity check
For 2a to 22i, 24, length L ₁ is 15 mm and width B ₁ is 5.5
mm, and are arranged at intervals of 7.62 mm, and a distance I of 5 mm is provided between the upper edges of these and the upper edge of the card body 2. Each positioning hole 30-32
The length L ₂ is 11 mm and the width B ₂ is 2 mm, which is smaller than the dimensions L ₁ and B ₁ of the holes 22a to 22i and 24. The center-to-center distance _F1 between the holes 22a-22i, 24 and the holes 30-32 is 20 mm, and the distance between the sensors 34A-34I, 36 and the sensors 38A-38 is 20 mm.
The center-to-center distance _F2 with C is also 20mm, and the dimensions
F ₁ and dimension F ₂ are set equal.

In other words, the reading of the production instruction card 1 is
In the case of using a card reading device as shown by reference numeral 4 in the figure, the card body 2 is transferred in the direction of the arrow X in the figure, that is, in the direction in which the holes 22a to 22i, 24 or the holes 30 to 32 are arranged. However, in this case, the dimensions of the holes 22a to 22i, 24
By setting B ₁ larger than the dimension B ₂ of the holes 30 to 32, the light from the sensors 38A to 38C is directed to the hole 3.
The section where light from sensors 34A to 34I, 36 passes through holes 22a to 22i, 24 (the section corresponding to dimension B ₂ )
B ₁ ).

Furthermore, when reading the production instruction card 1 using a card reading device such as the one indicated by the reference numeral 4' in FIG.
It will be transferred in the Y′ direction. Here, hole 2
The dimension L ₁ of holes 2a to 22i and 24 is set larger than the dimension L ₂ of holes 30 to 32, and the holes 22a to 2
2i, 24 and the center-to-center distance _F1 between the holes 30-32, the sensors 34A-34I, 36 and the sensors 38A-3.
By setting the center-to-center distance F ₂ with respect to 8C, even when the card body 2 is transferred in the Y-Y′ direction, the light from the sensors 38A to 38C is
The section where the light from the sensors 34A to 34I, 36 passes through the hole 22 (the section corresponding to 2.S ₂ ) is
It exists within the section passing through a to 22i and 24 (the section corresponding to 2.S ₁ ). In this case, misreading is prevented by setting the dimension I.

FIG. 5 shows the circuit configuration of the card reading device. In the same figure, the card reading device is roughly composed of a sensor unit 40 that houses the above-mentioned sensor group and a data processing unit 42. , an input card 44 connected to the sensor unit 40, ROM, and RAM.
It includes a control unit 46 consisting of a CPU, and an output card 48 connected to various output instruction devices.

In this embodiment, the output instruction device is as follows:
Those shown in FIGS. 6 to 8 are used. That is, as shown in FIG.
~9D, or as shown in FIG. 7, the information code of the production instruction card 20 is
The information code of the production instruction card 1 is displayed on the display board 5 as shown in FIG.
The BCD code displayed at 0 and 52 is used. Which output instruction device to use among these output instruction devices is selected by setting the input conditions of the card inserted into the input card 44. For example, when the output instruction device shown in FIG. 6 is selected by the card attached to the input card 44, the production instruction card 1 is conveyed along the production line together with the workpiece, and the sensor 3
8A to 38C are turned ON, and production instruction card 20
When it is detected that the production instruction card 1 is at the information reading position, the information code of the production instruction card 1 is read in the control unit 46 based on the detection outputs of the sensors 34A to 34I and 36. Then, if the content of the information code read by the sensors 34A to 34I is information for lighting the lamp 9B, a signal for lighting the lamp 9B is supplied to the lamp circuit of the output instruction device via the output card 48 and the lamp is turned on. 9B lights up.

Next, a method of reading the production instruction card 1 of this embodiment will be explained with reference to FIGS. 9 to 12.

First, when reading the information code of the production instruction card 1, the sensors 38A, 38B, 38C detect that the production instruction card 1 has reached the information reading position.
This is done by monitoring the detection output. That is, when the production instruction card 1 is transferred in the X direction shown in FIG. 3 and in the Y-direction shown in FIG.
When transferred in the Y' direction, the sensors 38A, 38
The detection outputs of B and 38C have the waveform shown in FIG. When the sensors 38A to 38C are turned on, it is detected that the production instruction card 1 has reached the information reading position, and reading of the information code of the production instruction card 20 is started. When reading this information code, in this embodiment, as the production instruction card 1 moves, light passing through the front edges of the holes 30 and 32 is transmitted to the sensors 38A (ON) and 38.
When detected by B(ON) 38C(ON), (timing t1) sensors 34A to 34I,
The information code is read by the sensor 36, and the light passing through the rear edge side of the holes 30 and 32 is activated by the sensor 38A (OFF), 38B (OFF), and 38C (OFF).
The information code is read by the sensors 34A to 34I and 36 at the time of detection, that is, at timing t2. That is, in this embodiment, the light passing through the holes 30 to 32 is transmitted to the sensor 38.
The information code on the production instruction card 1 is read twice while it is being detected by A to 38C.

That is, in step 200, it is determined whether or not the sensor 38B is turned on as the production instruction card 1 passes through the card passage of the card reader 4, 4'. When the determination in this step is YES, the process moves to step 202, where it is determined whether the sensor 38C is ON or not. That is, it is determined whether the light passing through the hole 32 is detected by the sensor 38C. NO at this step
When it is determined that this is the case, the process moves to step 204 and it is determined whether or not the sensor 38A is ON. That is, in steps 202 and 204, it is determined whether the sensors 38C and 38A are turned on, respectively. and step 202 or step 204
If the determination is YES, the process moves to steps 206 and 208, respectively. In step 206, it is determined whether the sensor 38A is turned on, and in step 208, it is determined whether the sensor 38C is turned on. Step 206 or Step 20
If the determination in step 8 is YES, it means that both the sensor 38A and the sensor 38C are turned on, and the process moves to step 210. In addition, in the processing of steps 202 to 208, the card body 2
A process is performed to detect the state when light passing near the edges of the holes 30, 32 is detected by the sensors 38A, 38C when the holes 30, 32 move in the direction of the arrow X or Y in FIG. That is, this process is performed when the moment when the front edges of the holes 30 and 32 face the detection ends of the sensors 38A and 38C is captured.

In step 210, sensors 38A-3
8C is turned on, it is detected that the card body 2 is at the information reading position, and the sensors 34A to 34H and the sensor 36 perform the processing to read the information code. After this step 21
2, it is again determined whether the sensor 38B is OFF. If the determination in this step is YES, the process moves to step 214 and the sensor 38C is
Determine whether it is turned off. That is, ON
It is determined whether the optical path of the detection end of the sensor 38C is blocked by the trailing edge of the hole 32. When the determination in this step is NO, the process moves to step 216 and it is determined whether or not the sensor 38A has been turned off. That is, step 21
4,216, sensor 38A, sensor 38C
It is determined whether any of them has turned OFF. If the determination in step 214 is YES, the process moves to step 218, and the process proceeds to step 218.
If the determination in step 16 is YES, the process moves to step 220. Then, in step 218, it is determined whether the sensor 38A is turned off, and in step 220, it is determined whether the sensor 38C is turned off.
A judgment is made as to whether or not it has become. That is, in steps 214 and 218, and in steps 216 and 2
At 20, both the sensor 38A and the sensor 38C
A determination is made as to whether or not it has been turned off.

When both the sensor 38A and the sensor 38C are turned off, the process moves to step 222. Also in step 222, the sensors 38A,
Processing is performed to read the information code at the moment when both 38C and 38C turn OFF. That is, step 2
Following the process of step 10, a second process of reading the information code is performed. After the process of step 222, the process moves to step 224.

In step 224, the contents of the first and second readings are compared, and it is determined whether or not the data read each time match. When the determination in step 224 is NO, the process moves to step 226, where the card reading device 40 outputs a signal to the output instruction device to indicate a reading error.

On the other hand, if the determination in step 224 is YES, the process moves to step 232, where parity check processing is performed. If the determination at this step is NO, the process moves to step 234 and the same processing as step 226 is performed. Step 232
If the result is YES, the process moves to step 236, where processing is performed to convert BCD data to BIN (binary) data. After this, the process moves to step 238, where processing is performed to extract data (decimal) from the address corresponding to the BIN data, and step 240
Move on to processing.

In step 240, it is determined whether each digit of the number is 10 or more. If each digit of the number is 10 or more, the process moves to step 242 and performs the same process as step 226.

On the other hand, if the determination in step 240 is NO, that is, if there is no reading error, the process moves to step 244. Step 244 and subsequent steps are output mode selection processing.

In step 244, it is determined whether or not there is 1out of N (Fig. 6), which is a signal such as a lamp instruction, and if it is determined as NO, step 24 is performed.
Proceed to step 6. In step 246, it is determined whether or not there is a 7SEG output (FIG. 7). That is, it is determined whether the production instruction information is to be output to the output instruction device shown in FIG. If the determination in this step is NO, the process moves to step 248.
Data is output using BCD (Fig. 8).

On the other hand, if the determination in step 246 is YES, the process moves to step 250 and the decimal code is changed to 7SEG.
After that, the process moves to step 252. In step 252, output processing is performed using 7SEG data.

Further, when the determination in step 244 is YES, the process moves to step 254, where data output processing at 1 out of N is performed, and all processing in this routine is completed.

In this way, when reading the information code of the production instruction card 1, the information code is read at two timings, and only when the data at each timing match, the production instruction information according to the read information code is output. This makes it possible to output accurate production instruction information.

According to the production instruction card 1 of this embodiment, the information code can be read twice even when the card body 2 is transported in either direction of arrow X or Y-Y' direction. can be done.

FIG. 2 shows another embodiment of the production instruction card 1 according to the present invention, and its features are as follows:
Dimensions L ₁ of holes 22a to 22i, 24 and holes 30 to 3
2 is set equal to the dimension L ₂ of holes 22a~
Center-to-center distance F ₁ between 22i, 24 and holes 30 to 32
Sensors 34A~34I, 36 and sensors 38A~
38C, the light from the sensors 38A to 38C can be transmitted to the holes 30 to 38C when the card body ₂ is transferred in the Y-Y' direction.
The section where the light from the sensors 34A to 34I, 36 passes through the hole 22 (the section corresponding to 2.S ₂ ) is
The reason is that it exists within the section passing through a to 22i and 24 (the section corresponding to 2.S ₁ ).

In addition, the holes 22a to 22i represent 135 here, and the number of holes is a divisor (22a, 22i).
d, 22e, 22g, and 22i), so parity check holes 24 are bored.

The other configurations are the same as those in FIG. 1, so their explanation will be omitted.

(Effects of the invention) As is clear from what has been described above, according to the invention, the position of By creating a section where the light passing through the positioning hole group is detected, the information code can be detected while the light passing through the positioning hole group is detected, regardless of the direction in which the card body is transported. This has the effect that reading can be reliably performed multiple times.

[Brief explanation of drawings]

Fig. 1 is a front view showing one embodiment of the production instruction card according to the present invention, Fig. 2 is a partially cutaway front view showing another embodiment, and Figs.
FIG. 5 is a block diagram showing the circuit configuration of the card reading device as illustrated in FIGS. 3 and 4. FIG. Figures 3 to 5
A configuration diagram showing an example of an output instruction device connected to the card reading device shown in the figure, which uses a lamp;
Fig. 7 is a block diagram showing the same 7-segment display element, Fig. 8 is a block diagram showing the same BCD code display, and Fig. 9 is the production instruction card shown in Figs. 1 and 2. 10 to 12 are flow charts for explaining the reading method, and FIG. 13 is a schematic configuration diagram of a conventional production instruction device. 1... Production instruction card, 2... Card body, 4
...Card reading device, 22a-22i...Information code hole, 30-32...Positioning hole, 34A-
34I...Sensor for reading information code, 38A~3
8C...Positioning sensor.

Claims (1)

[Scope of utility model registration request] The card body being transferred through the card passage of the optical reading device has a group of holes for information codes representing production instruction information, and a positioning device for detecting the information reading position for reading the information code of the hole group for information codes. A group of holes are bored so that there is a section in which light passing through the group of positioning holes is detected within a section in which light passing through the group of holes for information code is detected;
A production instruction card characterized in that these information code hole groups and positioning hole groups are arranged.