JPH07308829A - Working device - Google Patents

Abstract

PURPOSE:To prevent an operator from encountering a risk even though he cannot expect a movement of a movable part due to any reason in the case of maintenance of a working device. CONSTITUTION:When a maintenance change-over switch 28 is changed over so as to set a maintenance mode, the switch 28 is energized so that a CPU 19 energizes a relay contact 24 for maintenance, and accordingly, a buzzer 30 is actuated before the movement of a feed bed 2 is started even if the movement of the feed bed 20 can be made although a safety guard 14 is opened, thereby the operator can notice of the movement of the feed bed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a normal operation mode for performing a predetermined work involving the movement of a movable part, and a maintenance operation mode for performing an operation for maintenance of the device different from the operation in the normal operation mode. Regarding work equipment.

[0002]

2. Description of the Related Art A work device of this type will be described with reference to FIGS. Reference numeral 1 is a base of an electronic component automatic mounting device as a working device, and 2 is guided by a linear guide 3 arranged on the base to rotate a screw shaft 5 by driving a supply base drive motor 4. A nut (not shown) with which the screw shaft 5 is screwed is attached and is a moving supply table.
A plurality of component supply units 7 for supplying the components 6 to predetermined positions by intermittently feeding a tape (not shown) containing the chip-shaped electronic components 6 onto the supply platform 2 in the moving direction of the supply platform 2 are provided. It is arranged so that various chip parts 6 can be supplied.

Reference numeral 8 is a tape reel around which the tape is wound. Reference numeral 9 denotes a suction nozzle that sucks and picks up the chip component 6 supplied from the unit 7, and is attached to the peripheral edge of the rotary table 10 that rotates intermittently at predetermined intervals. At a predetermined stop position of intermittent rotation of the rotary table 10, the suction nozzle 9 sucks the chip component 6 supplied by the unit 7 that stops at that position.

Reference numeral 11 is a recognition device provided at a predetermined stop position of the rotary table 10 and recognizes the positional deviation of the chip component 6 sucked by the suction nozzle 9. Numeral 12 is an XY table for positioning and fixing the printed circuit board 13 and moving it in the horizontal XY directions by a drive motor (not shown). Chip components which the suction nozzle 9 sucks at a predetermined stop position of the rotary table 10. 6 is the table 12
Is moved to attach the printed circuit board 13 at a predetermined position. At the time of this mounting, the correction is made by the recognition result of the recognition device 11.

Reference numeral 14 is a safety guard fixed to the support column 15 by a fixing means (not shown). The safety guard 14 is rotatably mounted around a support shaft 16 provided on the support column 15, and is a support column as shown in FIGS. It is designed so that the operator does not touch the moving supply table 2 fixed to 15. The safety guards 14 are provided at three locations in the moving direction of the supply base 2, and a limit switch 17 is attached to the right column of each guard 14 in FIG.
When 4 is closed as shown in FIGS. 3 and 4, it is energized. When the guard 14 is opened, for example, in the state shown in FIG. 5, the limit switch 17 is deenergized. The limit switch 17 is connected to a CPU 19 via an interface 18 as shown in FIG.
The CPU 19 can judge whether the safety guard 14 is open or closed.

In FIG. 6, 22 is a RAM, and 23
Is a ROM. A maintenance relay contact 24 is connected in parallel with the limit switch 17 to a line connected to the interface 18 of the limit switch 17, and the interface 18 opens and closes the contact 24 via a drive circuit 25. A maintenance relay 26 for driving is connected. Under the control of the CPU 19, the relay 25 is energized to energize the relay contact, and the relay 25 is de-energized to de-energize the relay contact 24.

When the limit switch 17 is closed, that is, when the guard 14 is closed as shown in FIG. 4, the CPU 19 detects this and operates the supply base drive motor 4 or other movable parts. When it is determined that the component 6 may be moved, an automatic operation for mounting the component 6 is performed by an operation from an operation unit (not shown) to appropriately move the motor 4 and the like. When the limit switch 17 is de-energized by opening the guard 14, the CPU 19 detects this and judges that the motor 4 or the like should not be moved even during the automatic operation, and the motor 4 Do not move. This is a so-called interlock state, but this is not a command for moving the motor 4 or it can be stopped by turning off the power to the motor 4.

In FIG. 6, a maintenance changeover switch 28 is connected to the interface 18, and the switch 28 is opened and de-energized in the automatic operation mode, and the CPU 19 inputs this state. Therefore, the automatic operation is controlled by determining that it is in the automatic operation mode, but when it is closed, it is determined that it is in the maintenance mode. That is, the CPU 19 energizes the relay 26 and energizes the relay contact 24. Since the relay contact 24 is connected in parallel to the limit switch 17 as described above, this state allows the limit switch 17 to be de-energized, that is, even if the guard 14 is opened.
Becomes movable.

In this state, the operator can perform maintenance work on various devices while moving the supply table 2 while the guard 14 is open.

[0010]

However, in the above-mentioned prior art, when the operator predicts the movement of the supply table, the operation can be performed without touching the supply table 2, but for some reason, The disadvantage is that it can be very dangerous if unpredictable. Therefore, an object of the present invention is to avoid danger even when the operator does not predict the movement of the movable portion for some reason when performing maintenance on the work device.

[0011]

Therefore, the present invention is directed to a normal operation mode for performing a predetermined work involving the movement of a movable part and a maintenance operation for performing maintenance of the apparatus different from the operation in the normal operation mode. A working device having an operation mode is provided with an informing means for informing that the movable part moves before the movable part starts moving in the maintenance operation mode.

The present invention is also directed to a working device having a normal operation mode for performing a predetermined work involving the movement of a movable part and a maintenance operation mode for performing an operation for maintenance of the device different from the operation in the normal operation mode. A safety guard that guards the operator at the guard position so that the operator's body does not enter the moving range of the movable part, and detects that the operator has moved the safety guard to a position where the operator can contact the movable part. A detection means, and a control means for preventing the movable part from moving when the detection means detects that the movable part is not at the guard position in the normal operation mode, and the movable part is movable in the maintenance operation mode; A notification unit is provided to notify that the movable portion moves before the movable portion starts moving in the maintenance operation mode.

[0013]

According to the structure of the first aspect, when the device is in the maintenance operation mode, the notifying means notifies that the movable part moves before the movable part of the device starts to move. According to the configuration of claim 2,
In the normal operation mode of the device, the control means does not move the moving part when it detects that the safety guard is not in the guard position, and in the maintenance operation mode, the control means controls the safety guard. Even if is not at the guard position, the movable part is moved and the notification means notifies that the movable part moves before the movable part starts moving.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described in detail below with reference to the drawings. The same components as those of the prior art will be described using the same reference numerals. The configurations of FIGS. 3 to 5 are the same in this embodiment. In FIG. 1, a buzzer 30 is connected to the interface 18, and various notifications are given to the operator by a buzzer sound under the control of the CPU 19.

The supply table 2 is a supply table 2R on the right side of FIG.
The left side of FIG. 3 is the supply base 2L, and the supply bases 2R and 2L can move independently or simultaneously by the rotation of the motor 4 and a clutch mechanism (not shown). In addition, when the left and right of the supply table are not distinguished, the description will be made as the supply table 2, and when the left and right are distinguished, the supply tables 2R and 2L
Will be described below separately.

The ROM 23 stores a program for executing the flowchart shown in FIG. With the above configuration, the operation will be described in detail below. First, the maintenance changeover switch 28 is opened as shown in FIG.
The CPU 19 determines the normal operation state.

The electronic component automatic mounting apparatus for mounting the component 6 on the substrate 13 is started automatically by operating an operation unit (not shown). That is, when the suction nozzle 9 stops at a position where the component can be taken out of the component supply unit 7 at each step of the mounting data (not shown) stored in the RAM 22, the component supply unit 7 that supplies the component type designated by the data is sucked. The supply table drive motor 4 is rotated so as to be stopped at the suction position of the nozzle 9, and the supply table 2 is moved by the rotation of the screw shaft 5.

At this time, the safety guard 14 is closed as shown in FIGS. 3 and 4, so that the operator does not touch the supply table 2 even if the supply table 2 moves. Also,
The maintenance relay switch 24 is in the non-energized state because the maintenance changeover switch 28 is open, and the limit switch 17 is in the energized state because the guard 14 is closed, and the CPU 19 moves the movable portion, that is, the supply base 2. I'm judging good things.

When the suction nozzle 14 sucks the component 6, the nozzle 14 is moved by the intermittent rotation of the rotary table 10 and the movement is repeated, and the recognition device 11 recognizes the positional deviation of the component 6 from the nozzle 14. The angular deviation is corrected and rotated by means for rotating the nozzle 14 (not shown). XY table 1 for XY directions
After the correction of 2, the component 6 is mounted on the table 12 by lowering the suction nozzle 9 at the position indicated by the data on the printed circuit board.

In this way, the components 6 are successively taken out by the suction nozzles 9 and mounted on the printed circuit board 13, and the supply base 2 is moved each time the components are taken out. During this normal operation, the operator opens the safety guard 14,
In this state, the limit switch 17 is de-energized and C
As a result, the PU 19 judges that the guard has been opened and stops the movement of the supply base 2. That is, the automatic operation is stopped. In this way, even if the operator approaches the supply table 2, the supply table 2 does not move and the operator's safety is ensured.

In this way, the normal operation is performed,
When the normal operation ends and the operator needs to maintain the apparatus, the maintenance changeover switch 28 is switched to the maintenance mode. That is, the switch 28 is closed and energized, which causes the CPU
In 19 the relay 26 is energized and the relay contacts are closed so that it is always energized. Therefore, the CPU 19 issues a movement command for the motor 5 regardless of the state of the limit switch 17.

Next, the operator opens the guard 14 and operates the operation part (not shown) to perform maintenance work such as checking the condition of necessary parts and cleaning, but the supply base 2 is activated. In this case, the CPU 19 judges this, and when only the supply base 2R moves according to the flowchart of FIG. 2, the buzzer 30 sounds once before moving. If only the supply base 2L moves, the buzzer 30
Sounded. Further, when the supply base 2R and the supply base 2L move at the same time, the buzzer 30 is sounded three times. Although the operator performs an operation of moving the supply table 2 for some reason, that is, starts the operation, even if the operator does not anticipate the movement, he / she can notice the movement and avoid the danger.

In the present embodiment, the buzzer 30 was sounded for warning, but the movement is started by voice guidance such as "The right supply base is moving." Good.

[0024]

As described above, according to the present invention, when the apparatus is in the maintenance mode, it is informed that the movable portion will move before it starts moving, so that the operator can notice the movement and avoid the danger. Further, since the movable part is not moved when the safety guard is opened in the normal mode, safety can be ensured not only in the maintenance mode but also in the normal operation mode.

[Brief description of drawings]

FIG. 1 is a control block diagram of an apparatus to which the present invention can be applied.

FIG. 2 is a diagram showing a flowchart.

FIG. 3 is a plan view of an electronic component automatic mounting device to which the present invention is applied.

FIG. 4 is a side view of an electronic component automatic mounting device to which the present invention is applied.

FIG. 5 is a side view of an electronic component automatic mounting device to which the present invention is applied.

FIG. 6 is a control block diagram of a prior art device.

[Explanation of symbols]

 2 Supply stand (movable part) 14 Safety guard 17 Limit switch (detection means) 19 CPU (control means) 30 Buzzer (notification means)

Claims (2)

[Claims] 1. A work device having a normal operation mode for performing a predetermined work involving movement of a movable part and a maintenance operation mode for performing an operation for maintenance of the device different from the operation in the normal operation mode, wherein the maintenance is performed. A working apparatus comprising: a notification unit that notifies that the movable portion is moving before the movable portion starts moving in the operation mode. 2. A working device having a normal operation mode for performing a predetermined work involving the movement of a movable part and a maintenance operation mode for performing an operation for maintenance of the device different from the operation in the normal operation mode, A safety guard that guards the operator at the guard position so that the operator's body does not enter the movement range of the section, and a detection unit that detects that the safety guard has been moved to a position where the operator can contact the movable portion. , A control means for preventing the movable part from moving when the detection means detects that it is not in the guard position in the normal operation mode, and a movable part in the maintenance operation mode; In the working apparatus, there is provided an informing means for informing that the movable part is moving before the movable part starts moving.