JP3446844B2 - Work equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a working apparatus which is capable of performing a predetermined work by moving a movable part and moving the movable part in a maintenance mode to perform maintenance work.

[0002]

2. Description of the Related Art A work device of this type is disclosed in Japanese Patent Application Laid-Open No. 4-16759
No. 9 publication, and in such a working device,
During normal operation, for example, a high thrust part such as a parts supply stand, a movable part such as a high speed rotating part is detected by a sensor when an operator approaches, and the operation is stopped. If this is set, such a sensor will not operate.

[0003]

However, in the above-mentioned prior art, since the interlock of the sensor or the like for the purpose of protection from the dangerous moving part is canceled during the maintenance work as described above, the operator is required to know what the moving part is. If you don't always anticipate what to move to, it could lead to an accident. Especially, when a plurality of workers perform maintenance work, such danger increases if communication is not well communicated. For example, it is dangerous when a worker is submerged in a place where another worker cannot see the worker.

Therefore, an object of the present invention is to enable safe maintenance work even when a dangerous movable part moves during maintenance of the apparatus.

[0005]

For this reason, the present invention provides a working apparatus in which a predetermined work is performed by moving a movable part, and the movable part is moved in a maintenance mode to enable maintenance work. In the case of, a warning means for issuing a warning before the movable part moves, a response detection part for detecting a response of a worker registered to the warning, and after the warning means issues a warning. Control means is provided for controlling the movable part so as not to move while the responses of all registered workers are not detected by the response detection part.

[0006] The present invention, in the working device the movable portion becomes possible maintenance moved in maintenance mode performs predetermined work by the movement of the movable portion, and a registration means for registering the operator, registers The whereabouts of the
Detecting means for detecting, judging means for judging whether all the registered workers are in a safe place based on the detection by the detecting means, and the judging means for ensuring the safety of all the workers. A control means for controlling the movable part to move only when it is determined is provided.

Further, according to the present invention, in a working apparatus in which a predetermined work is performed by moving a movable part and the movable part is moved in a maintenance mode to enable maintenance work, a safe place is provided in the maintenance mode. Detecting means for detecting the presence of workers, storage means for storing the number of workers who should be in a safe place, and that the number of workers stored in the storage means is in a safe place Control means for controlling the movable part to move only when the detecting means detects it is provided.

[0008]

According to the structure of claim 1, the control means is registered after the warning means issues a warning before the moving part moves.
The movable part is not moved while the responses of all the workers are not detected by the response detection part. According to the configuration of claim 2, the control means moves the movable part only when the determination means determines that all the workers registered in the registration means are in a safe place.

According to the structure of claim 3, the control means moves the movable portion only when the detection means detects that the number of operators stored in the storage means is in a safe place.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the invention according to claims 1 and 2 of the present application will be described below in detail with reference to the drawings. 1 and 2, 2
0 is an electronic component automatic mounting device as a working device,
The mounting device 20 will be described in detail with reference to FIG. 1 is Y
Reference numeral 3 denotes a Y table that moves in the Y direction by the rotation of the shaft motor 2, and reference numeral 3 denotes an XY table that moves in the X direction on the Y table 1 by the rotation of the X axis motor 4 and consequently moves in the XY directions. Thus, the printed circuit board 6 on which the chip-shaped electronic component 5 (hereinafter, referred to as a chip component or component) is mounted is fixed and placed on a fixing means (not shown).

Reference numeral 7 is a supply table as a movable part, and a large number of component supply devices 8 for supplying the chip components 5 are arranged. Reference numeral 9 denotes a supply base drive motor, which rotates the ball screw 10 to guide the supply base 7 to the linear guide 12 via a nut (not shown) fitted to the ball screw 10 and fixed to the supply base 7. Move in the X direction. Thirteen
Is a rotary table that rotates intermittently.
The mounting heads 15 for adsorbing and holding the chip components are arranged at the outer edge of 3 at equal intervals according to the intermittent pitch.

Reference numeral I denotes a suction station at a stop position where the mounting head 14 suctions the component 5 from the supply device 8 by intermittent rotation of the rotary table 13. Reference numeral 16 denotes a component recognition device for recognizing the displacement of the component 5 sucked by the suction nozzle 14 by recognizing the lower surface of the component 5 with a camera in a predetermined visual field range and recognizing the imaged screen. It is provided in.

Next mounting head 1 of the recognition station II
The position where 5 is stopped is the angle correction station III, and the angle amount for correcting the angular position deviation of the chip component 5 due to the recognition result of the recognition device 16 is added to the predetermined angle amount shown in the mounting data (not shown). The head rotating device 17 rotates the mounting head 15 in the θ direction by an amount. The θ direction is a direction of rotation around an axis extending in the vertical direction.

The next stop position after the angle correction station III is the mounting station IV, and the component 5 attracted to the board 6 by the mounting head 15 of the station IV.
The mounting head 15 is lowered and mounted. 1 and 2
In the above, the electronic component automatic mounting apparatus 20 is connected to an adhesive application device 21 which is an upstream device.
Thus, the printed circuit board 6 coated with an adhesive for temporarily fixing the chip component 5 is transferred to the supply conveyor 22 and is then mounted on the XY table 3 from the conveyor 22. A solder reflow furnace 23 is connected to the downstream side of the mounting apparatus, and the discharge conveyor 24 transfers the substrate 6 on which the component 5 is mounted to the reflow furnace 23.

Reference numeral 26 denotes a safety confirmation stand for confirming that the worker 27 is in a safe position, which is provided at a plurality of positions on both sides of the conveyor 22 and 24 of the electronic component automatic mounting apparatus 20 and separated from each other. A bar code reader 28 as a detecting means shown in 4 is attached to the upper part thereof.
Reference numeral 29 denotes a bar code reader as a detection means provided near the operation unit 41 of the mounting device 20 on the XY table 3 side or in the operation unit.

The bar code readers 28 and 29 are for reading the bar code 32 attached to the band 31 wound around the wrist of the operator by the reading unit 33 as shown in FIG. The barcode reader 29 is provided at a position where the operator 27 can operate the operation unit 41 while reading the barcode 32 of the band 31. Electronic component automatic mounting device 2
0, the adhesive application device 21 and the solder reflow oven 23 have a certain height, and workers on the opposite side of the conveyors 22 and 23 cannot see or are hard to see.
Also, since it is a conveyor, it cannot easily go to and from the other side.

Reference numeral 34 is a speaker as a warning means for issuing a voice such as an alarm or a buzzer sound. Next, the control block of the electronic component automatic mounting device 20 will be described with reference to FIG. 36 is a CP as a judgment means and a control means
U, which controls the operation of each part during automatic operation of component mounting and maintenance based on various data stored in the RAM 38 according to a program stored in the ROM 37.

The bar code readers 27, 28 are connected to the CPU 36 via an interface 39, and the speaker 34 is also connected. The bar code reader 27 of the stand 26 is a CP in the main body of the device 20.
It may be connected to U36 by a signal line or wirelessly. The Y-axis motor 2, the X-axis motor 4, the supply base drive motor 9, and the like, which are the control targets of the CPU 36, are connected to the CPU 36 via a drive circuit 40.

Reference numeral 41 denotes the above-mentioned operation unit connected to the interface 39. By operating the operation unit 41, the CP is operated.
The control of U36 is performed. The operation key 41 includes a start key 4
2 and a key such as a stop key 43 are provided, and an operation during automatic operation and maintenance is performed by operating these keys and the touch panel switch 45 formed on the screen of the CRT 44. The operation mode of the electronic component automatic mounting device 20 includes an automatic operation mode and a maintenance mode for maintaining each part of the device 20, and the mode is switched by operating the operation unit 41 and the touch panel switch 45. In the automatic operation mode, a guard, a safety door, etc. are installed to prevent the operator's body from entering the moving range of the movable table such as the supply table 7 and the XY table 3, and the limit switch is opened when the door is opened. For example, the automatic operation is stopped and the movable part is stopped. However, in the maintenance mode, the functions of the limit switch and the like are stopped so that the movable part can enter the moving range.

The operation of the above configuration will be described below. First, the automatic operation mode is selected by operating the operation unit 41 and the touch panel switch 46, and when the start key 42 is pressed, the automatic operation of mounting the chip component 5 on the printed circuit board 6 is started. That is, the substrate 6 is the adhesive application device 2
1 is transferred to the supply conveyor 22 and the conveyor 22
When the substrate 6 conveyed to the XY table 3 is placed on the XY table 3, data indicating the position on the supply table 7 of the component supply device 8 for supplying the components 5 to be taken out in the mounting order (not shown) stored in the RAM 38. In accordance therewith, the CPU 36 drives the motor 9 to move the supply base 7 and position the supply device 8 at the adsorption station I.

Next, the mounting head 15 which has moved to the station I by the intermittent rotation of the rotary table 13 descends to take out the chip component 5 from the component supply device 8. Next, the head 15 is moved by the rotation of the rotary table 13, and in the recognition station II, the component recognizing device 16 recognizes the positional deviation of the component 5 held by the head 15 and further moves the head 15 to make an angle. Correction station II
At I, the head rotating device 17 rotates the head 15, and the head 15 is positioned at an angular position to be mounted.
In the section IV, the component 5 is mounted at the position where the printed circuit board 6 should be mounted by lowering the mounting head 15. The positioning of the board 6 is performed by the recognition by the rotation of the X-axis motor 4 and the Y-axis motor 2 and the XY table 3 is moved. The position to be mounted is also stored in the RAM 38 and is described above. It is stored in data not shown.

The head 15 sequentially performs the same operation to mount the components 5 in the order of mounting the data. Thus 1
When all the components 5 in the mounting order stored in the data are mounted on one board 6, the board 6 is discharged and conveyed to the discharge conveyor 24. In this way, the component 5 is mounted on the board 6. In this automatic operation mode, the operator 27 is prevented from entering the moving range of the supply table 7 by the guard (not shown), and the guard is not installed. When opening or entering, the sensor (not shown) detects and the automatic operation is stopped, and the movement of the supply base 7 is also stopped. In the automatic operation mode, the operation unit 41 accepts all operations even if the worker 27 does not wear the band 31. Further, it is not necessary for each worker 27 who is not operating the operation unit 41 to cause the barcode reader 28 to read the barcode 32 attached to the band 31.

Next, when the operator 27 wants to perform maintenance and inspection of the apparatus 20, or when the automatic operation is stopped by finishing the planned number of substrates 6, etc. (or the stop key 43 is pressed). And), the operation unit 41 and the touch panel switch 46 are operated to change to the maintenance mode. Then, the screen of the CRT 45 becomes a worker registration screen (not shown).

Next, the worker 27 attaches the band 31 having the different bar codes 32 for identifying each person to the band 31 shown in FIG.
As shown in FIG. 3, the bar code is wrapped around the wrist and the bar code reader 28 of the nearby stand 26 or the reading section 33 of the bar code reader 29 is caused to read the bar code. Then,
As shown in FIG. 7, the worker identification code displayed on the bar code 32 is displayed on the worker registration screen. In this case, the identification codes of two persons are displayed as shown in FIG.
It is assumed that the code "AAAA" indicates an operator who is on the side of the supply base 7 in FIG.

Next, when the worker 27 at the position for operating the operation unit 41 sees the CRT 45 and confirms that the workers are all registered, the touch panel switch formed on the screen is confirmed. The switch portion 48 indicated by "Registration completed" 46 and surrounded by a double frame is pressed.
In this way, the CPU 36 stores the identification code displayed on this screen in a predetermined area of the RAM 38. At this time, when the mode is changed to the maintenance mode, the speaker 34 may give voice guidance such as "Please register the operator."

Next, as shown in FIGS. 1 and 2, the worker performs the maintenance work in a state where the device 20 is divided into both sides. For example, when the user wants to move the supply base 7, the CRT 4 is used.
The operation of rotating the motor 9 to move the supply base 7 is selected by changing the screen of 5, and the start key 42 is pressed. If the switch unit 48 for ending registration is not pressed, the fact that registration is not completed at this point is displayed on the screen or guided by the speaker 34, and no movement is performed.

Next, the speaker 34 gives voice guidance to the effect that the movable part is moving (or the supply base is moving). This guidance may be given when an operation is selected on the screen of the CRT 45. Next, as shown in FIGS. 1 and 2, the worker 27 on the side of the supply table 7 evacuates to a position of one of the stands 26 (the stand 26 at the left end in FIG. 1) and, as shown in FIG. The code 32 is read by the barcode reader 28 and this state is continued.

Then, the CPU 36 causes the identification code "AAA".
It is determined that the worker “A” 27 is in a safe position.
Next, when the worker 27 at the position of the operation unit 41 reads the bar code 32 into the bar code reader 29 and continues the state, the CPU 36 causes the worker 2 having the identification code "BBBB"
When it is determined that 7 is in a safe position and all the registered workers are in a safe position, the motor 9 is driven to move the supply base 7. During this movement, the bar code 32 of any worker must continue to be read by the bar code readers 28 and 29. If the hands of the band 31 are released from the bar code readers 28 and 29, the CP
U36 stops the rotation of the motor 9.

If it is difficult to continue reading the bar code 32, a reflective optical sensor or the like may be used together to read the bar code 32 first, and then a safe position while the hand or the like is detected by the sensor. You may make it CPU36 judge that it is in. When the movement of the supply table 7 is completed, the fact that the movement is completed is guided by the speaker 34, and the worker 27 on the side of the supply table 7 leaves the stand 26 and enters and performs maintenance work even within the movement range of the supply table.

Next, when the maintenance work is completed, the maintenance mode is switched to, for example, the automatic operation mode. At the time of switching, the identification code of the worker is erased from the RAM 38, and then the maintenance mode is switched to. Has to register all the workers again, so that the workers at that time can be surely grasped.

If the number of workers increases or decreases after the workers have been registered in the maintenance mode, the registration must be corrected. For example, as shown in FIG. If the screen is called and the switch section 49 labeled "Delete" is pressed, all the registrations are deleted. Next, all the workers 27 who should register again read the bar code 32 of their own into the bar code readers 28 and 29 in the same manner as described above, and the identification code is displayed as in FIG. If it is confirmed, the registration is completed by pressing the registration completion switch unit 48.

The maintenance work is performed as described above. In this embodiment, in the maintenance mode, the speaker 34 is always warned that the movable portion is moved before the movable portion is moved. However, there is a contact between the workers to move the movable portion. If all the workers are in a state of being able to read the bar code 32 by any of the bar code readers 28 and 29 before, the movable portion is moved by pressing the start key 42 without issuing a warning from the speaker 34. You may do it.

Further, among the registered bar codes, the operation unit 4
For the worker in No. 1, if the bar code 32 is first read by the bar code reader 29, it does not have to be continuously read during the subsequent operation. Alternatively, it is also possible that the worker in the operation unit 41 does not have to be detected if another worker is detected.

In this embodiment, the bar code 3 of each worker is used.
2 are each different can distinguish each person were able to movable part as long as the operator of all of the identification code registered is not detected that are in a safe position by the bar code reader does not move, this application claims In the embodiment of the invention according to item 3
For example, it is possible to set only the number of people who will work when entering the maintenance mode, even if they do not know which worker has the same bar code and is in the position where the bar code reader will read the bar code. Every time the moving part is moved, an alarm is issued by a speaker and each bar code is read by the bar code readers 28 and 29, and the moving part is moved when the bar codes for the registered number of people are detected. Good.

Further, it is not only the reading of the bar code of this embodiment that responds to the alarm from the speaker 34, but, for example, a switch is provided on the stand 26 of this embodiment instead of a bar code reader and this switch is pressed. Alternatively, the response can be made by pressing and holding the switch, and even in this case, the movable part can be prevented from starting to move unless the number of people who press the switch is the registered number of people working.

Further, instead of the barcode, the fingerprint of each person may be registered and the fingerprint may be read.

[0037]

As described above, according to the present invention, as described above , all the workers registered by the warning means issuing a warning.
Since but not the movement of the movable portion is made if it does not respond,
It is possible to prevent an accident from occurring without the operator predicting the operation of the movable part. In addition, the moving part is not moved unless all of the registered workers are judged to be in a safe place. Therefore, the movable part does not move and the worker's safety is ensured.

Further, since the movable part is not moved unless the detection means detects that the number of workers who should be in a safe place is in a safe place, the workers are in the movable range of the movable part. The worker does not move and the safety of the worker is achieved.

[Brief description of drawings]

FIG. 1 is a side view of an electronic component automatic mounting device.

FIG. 2 is a plan view of a board production line to which an automatic electronic component mounting apparatus is connected.

FIG. 3 is a plan view of an electronic component automatic mounting device.

FIG. 4 is a perspective view showing a state in which a barcode is being read by a barcode reader.

FIG. 5 is a perspective view showing a state in which the worker is wearing a band with a barcode.

FIG. 6 is a control block diagram of the electronic component automatic mounting device.

FIG. 7 is a diagram showing a screen displayed on a CRT.

[Explanation of symbols]

7 Supply Table (Movable Section) 28 Bar Code Reader (Response Detection Section, Registration Means, Detection Means) 29 Bar Code Reader (Response Detection Section, Registration Means, Detection Means) 34 Speaker (Warning Means) 36 CPU (Judgment Means, Control) means)

Claims (3)

(57) [Claims] 1. A working apparatus in which a predetermined work is performed by moving a movable part and the movable part is moved in a maintenance mode to enable maintenance work, before the movable part is moved in the maintenance mode. and warning means for issuing a warning to a response detection unit for detecting the response of the operator that is registered for the alerts, the work which the warning means is registered by the response detection part after warned
A working device comprising control means for controlling the movable part so as not to move while no responses of all persons are detected. 2. A registration device for registering a worker in a work apparatus, wherein a movable part is moved to perform a predetermined work and the movable part is moved in a maintenance mode to perform maintenance work, and registered work. Detection to detect the whereabouts of a person
Means, a judging means for judging whether all the registered workers are in a safe place based on the detection by the detecting means, and the movable means only when the judging means judges the safety of all the workers. A working device comprising: a control unit that controls to move the unit. 3. In a working device in which a predetermined work is performed by moving a movable part and the movable part is moved in a maintenance mode so that maintenance work can be performed, an operator can be placed in a safe place in the maintenance mode. Detection means for detecting that there are people, storage means for storing the number of workers who should be in a safe place, and the detection means that the number of workers stored in the storage means is in a safe place A working device comprising: a control unit that controls the movable unit to move only when it is detected.