JP3354280B2 - Work equipment - Google Patents

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 operation involving the movement of a movable part and a maintenance operation mode for performing an operation for maintenance of the apparatus different from the operation in the normal operation mode. Related to working equipment.

[0002]

2. Description of the Related Art This type of working device will be described with reference to FIGS. Reference numeral 1 denotes a base of an electronic component automatic mounting device as a working device. Reference numeral 2 denotes a base which is guided by a linear guide 3 disposed on the base and which is driven by a supply base drive motor 4 to rotate a screw shaft 5. It is a supply table to which a nut (not shown) to which the screw shaft 5 is screwed is attached and moves.
A number of component supply units 7 for supplying the components 6 to a predetermined position by intermittently sending out a tape (not shown) containing the chip-shaped electronic components 6 on the supply table 2 in the moving direction of the supply table 2 are provided. It is provided so that various chip components 6 can be supplied.

Reference numeral 8 denotes a tape reel on which the tape is wound. Reference numeral 9 denotes a suction nozzle which sucks and takes out the chip components 6 supplied from the unit 7, and is attached to the periphery of the rotary table 10 which rotates intermittently at predetermined intervals. At a predetermined stop position of the intermittent rotation of the rotary table 10, the suction nozzle 9 suctions the chip component 6 supplied by the unit 7 stopped at this position.

[0004] Reference numeral 11 denotes a recognition device provided at a predetermined stop position of the rotary table 10 for recognizing a positional shift of the chip component 6 sucked by the suction nozzle 9. Reference numeral 12 denotes an XY table for positioning and fixing the printed circuit board 13 and moving the printed circuit board 13 in the horizontal XY directions by a drive motor (not shown). 6 is the table 12
Is mounted at a predetermined position on the printed circuit board 13. At the time of this mounting, a correction based on the recognition result of the recognition device 11 is performed.

Reference numeral 14 denotes a safety guard fixed to a support 15 by a fixing means (not shown). The safety guard 14 is rotatably mounted around a support shaft 16 provided on the support 15, and as shown in FIGS. 15 so that the operator does not touch the supply table 2 which moves. The safety guard 14 is provided in three places in the moving direction of the supply stand 2, and a limit switch 17 is attached to a right support of each guard 14 in FIG.
4 is closed as shown in FIG. 3 and FIG. When the guard 14 is open, for example, in the state shown in FIG. 5, the energization of the limit switch 17 is cut off. The limit switch 17 is connected to a CPU 19 via an interface 18 as shown in FIG.
The CPU 19 can determine whether the safety guard 14 is opened or closed.

In FIG. 6, reference numeral 22 denotes a RAM;
Is a ROM. A maintenance relay contact 24 is connected to a line connected to the interface 18 of the limit switch 17 in parallel with the limit switch 17, and the contact 18 is opened and closed by the interface 18 via a drive circuit 25. The driving maintenance relay 26 is connected. Under the control of the CPU 19, the relay 25 is energized to turn on the relay contact, and the relay 25 is deenergized by turning off the relay 25.

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 controls the supply stand drive motor 4 or other movable parts. It is determined that the movement may be performed, and an automatic operation for mounting the component 6 is performed by operating an operation unit (not shown), and the motor 4 and the like are appropriately moved. When the limit switch 17 is de-energized by the opening of the guard 14, the CPU 19 detects this and determines that the motor 4 or the like must not be moved even during the automatic operation. Do not move. This is a so-called interlock state. This is a state in which a command to move the motor 4 is not issued, or the motor 4 can be prevented from moving by turning off the power.

In FIG. 6, a maintenance changeover switch 28 is connected to the interface 18. The switch 28 is opened and de-energized in the automatic operation mode. The automatic operation mode is determined based on the operation, and the automatic operation is controlled. When the automatic operation mode is closed, the maintenance mode is determined. That is, the CPU 19 turns on the relay 26 and turns on the relay contact 24. As described above, since the relay contact 24 is connected in parallel to the limit switch 17, the motor 4 is not energized due to this state, that is, even if the guard 14 is opened.
Becomes movable.

In this state, the operator can carry out maintenance work of various devices with the guard 14 opened while moving the supply table 2.

[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. If it cannot be predicted, it has the disadvantage of being very dangerous. Therefore, an object of the present invention is to make it possible to avoid danger even when the operator does not predict the movement of the movable part for some reason when performing maintenance on the working device.

[0011]

SUMMARY OF THE INVENTION The present invention To this end, each
Can move alone or simultaneously.
In a working device having a normal operation mode for performing a predetermined operation involving the movement of a number of movable parts and a maintenance operation mode for performing an operation for maintenance of the device different from the operation in the normal operation mode, Each movable part alone indicates that the movable part moves before the movable part starts moving.
Depending on whether they are moving or moving at the same time,
Ri is provided with a notifying means for notifying.

Further, the present invention relates to a working apparatus having a normal operation mode for performing a predetermined operation involving movement of a movable portion 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 for guarding the operator's body at a guard position so as not to enter the movable range of the movable part, and detecting that the safety guard has been moved to a position where the operator can contact the movable part. Detection means, and control means for not moving the movable part when the detection means detects that it is not at the guard position in the normal operation mode, and for enabling the movable part to be movable in the maintenance operation mode, A notifying unit is provided for notifying that the movable part moves before the movable part starts moving in the maintenance operation mode.

[0013]

According to the first aspect of the present invention, when the apparatus is in the maintenance operation mode, the notifying means informs the user that the movable sections move before the movable sections of the apparatus start moving, whether each of the movable sections moves alone or simultaneously.
Notification is made by a different notification method depending on whether the user moves . According to the configuration of claim 2, in the normal operation mode of the device, the control means does not move the movable part when detecting that the safety guard is not at the guard position, and in the maintenance operation mode. In such a case, the control means moves the movable part even when the safety guard is not at the guard position, and the notifying means notifies that the movable part moves before the movable part starts moving.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. The same components as those of the prior art will be described using the same reference numerals. 3 to 5 are the same in the present 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.
With the supply table 2L on the left side of FIG. 3, the supply tables 2R and 2L can be moved independently or simultaneously by the rotation of the motor 4 and a clutch mechanism (not shown). Note that when the left and right sides of the supply stand are not distinguished, the supply stand is described as the supply stand 2, and when the left and right sides are distinguished, the supply stand 2R, 2L
This will be described below in distinction.

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

The automatic operation of the electronic component automatic mounting apparatus for mounting the component 6 on the substrate 13 is started by operating the operation unit (not shown). That is, when the suction nozzle 9 stops at a position where components can be taken out from the component supply unit 7 at every step of mounting data (not shown) stored in the RAM 22, the component supply unit 7 that supplies the component type specified by the data is sucked. The supply table drive motor 4 is rotated so as to stop 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 come into contact with the supply table 2 even when the supply table 2 moves. Also,
The maintenance relay contact 24 is in a non-energized state because the maintenance changeover switch 28 is open, the limit switch 17 is in an energized state because the guard 14 is closed, and the CPU 19 moves the movable part, that is, the supply stand 2. Judge good.

When the suction nozzle 14 sucks the component 6, the nozzle 14 moves due to the intermittent rotation of the rotary table 10, and the movement is repeated. The recognition device 11 recognizes the position shift of the component 6 to the nozzle 14. The angle deviation is corrected and rotated by means for rotating the nozzle 14 (not shown). XY table 1 for XY direction
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 of the suction nozzle 9 and mounted on the printed circuit board 13, and the supply table 2 is moved every time the components are taken out. During this normal operation, the operator opens the safety guard 14 and
, The limit switch 17 is de-energized and C
The PU 19 thereby determines that the guard has been opened, and stops the movement of the supply stand 2. That is, the automatic operation stops. Thus, even if the operator approaches the supply table 2, the supply table 2 does not move, and the safety of the operator is achieved.

In this manner, normal operation is performed.
When the normal operation is completed and the operator needs to perform maintenance on the device, the maintenance switch 28 is switched to the maintenance mode. That is, the switch 28 is closed and becomes energized, whereby the CPU
In 19, the relay 26 is energized, the relay contact is closed, and the relay 26 is always energized. Therefore, the CPU 19 issues a command to move the motor 5 irrespective of the state of the limit switch 17.

Next, the operator opens the guard 14 and performs maintenance work such as checking the state of necessary parts and cleaning while operating an operation unit (not shown). In this case, the CPU 19 determines this, and if only the supply stand 2R moves according to the flowchart of FIG. 2, the buzzer 30 sounds once before moving. If only the supply table 2L moves, the buzzer 30
Ringed twice. When the supply table 2R and the supply table 2L move simultaneously, the buzzer 30 is sounded three times. The operator has performed an operation of moving the supply stand 2 for some reason, that is, has started the operation. However, even when the movement is not predicted, the operator notices the movement and can avoid the danger.

In this embodiment, the buzzer 30 is sounded for danger notification. However, the movement is started by voice guidance such as "The right supply table moves." Is also good.

[0024]

As described above, according to the present invention, when the apparatus is in the maintenance mode, the movable parts move before starting to move .
Depending on whether the moving part moves alone or simultaneously
Since the notification is performed by the notification method , the operator notices the movement and can avoid the danger. Also, in maintenance mode
Notification means that the movable part moves before the movable part starts moving
In addition , when the safety guard is opened in the normal mode, the movable portion is not moved, so that safety can be ensured not only in the maintenance mode but also in the normal operation mode.

[Brief description of the drawings]

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

FIG. 2 is a diagram showing a flowchart.

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

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

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

FIG. 6 is a control block diagram of a conventional 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)

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B23P 21/00 B23Q 11/00

Claims (2)

(57) [Claims] 1. Each of them moves alone or simultaneously
In a working device having a normal operation mode for performing a predetermined operation involving the movement of a plurality of movable parts capable of performing and a maintenance operation mode for performing an operation for maintenance of the device different from the operation of the normal operation mode, husband that the movable portion moves before said movable portion in the maintenance operation mode starts moving
Depending on whether the moving parts move alone or simultaneously
A working device characterized by providing a notifying means for notifying by a different notifying method . 2. A work apparatus having a normal operation mode for performing a predetermined operation involving movement of a movable portion 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 at a guard position so that the operator's body does not enter the moving range of the unit, and a detecting unit that detects that the operator has moved the safety guard to a position where the operator can contact the movable unit. Control means for preventing the movable part from moving when the detection means detects that it is not at the guard position in the normal operation mode and enabling the movable part to move in the maintenance operation mode; A working device for notifying that the movable part moves before the movable part starts moving.