JPH0983200A - Electronic-component assembling apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic-component assembling apparatus provided with a mechanism which can open an opening and shutting cover after putting an end to the operation of a device at the inside when the opening and shutting cover is opened in order to perform maintenance inspection of the device. SOLUTION: A device such as a loading head or the like is arranged and installed inside a cover box 1. An opening and shutting cover 2 which is used to perform the maintenance inspection of the inside is installed at the cover box 1. When an opening-and-shutting-cover opening request switch SW2 is turned on, the device such as the loading head or the like completes an operation in progress, it is moved to a standby position, and a lock part 6 at the opening and shutting cover 2 releases a locked state. Then, an operator opens the opening and shutting cover 2 so as to perform the maintenance inspection. When the opening and shutting cover 2 is opened, a drive current switch at the device is turned off. When the maintenance inspection is completed and the opening and shutting cover 2 is closed, the lock part 6 locks the opening and shutting cover 2 again. In addition, when an automatic-operation starting switch SW3 is turned on, the device restarts its operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic component assembly apparatus having an opening / closing cover for maintenance and inspection of equipment in a cover box.

[0002]

2. Description of the Related Art An electronic component mounting device for mounting electronic components on a board, a screen printing device for applying cream solder for soldering electronic components to a printed circuit board, a wire bonder for connecting a chip and a substrate with wires, and a solder for the substrate Electronic component assembly devices such as visual inspection devices for inspecting the soldered state of attached electronic components are equipped with various devices such as a mounting head, an XY table, a squeegee, a capillary tool, a laser irradiator, and a camera. Perform predetermined operations at a high speed, and it is dangerous for an operator to expose these devices to the outside, so these devices are provided inside the cover box. The cover box is provided with an opening / closing cover, and in consideration of safety, when the opening / closing cover is opened, the power of the device is turned off and the operation is stopped.

[0003]

As described above, in the conventional electronic component assembly apparatus, if the operator unintentionally opens the open / close cover, the operation of the equipment is stopped there. It was unclear whether to stop the operation in such a state. That is, for example, the mounting head may be vacuum-adsorbing the electronic component to its nozzle and transferring the electronic component toward the printed circuit board, and if the operator inadvertently opens the open / close cover while one such operation is in progress, , Electronic parts fall from the nozzle. Alternatively, in the case of a screen printing device, the squeegee may be sliding on the printed circuit board and applying cream solder, and if the operator unexpectedly opens the open / close cover while such an operation is in progress, the cream solder is applied. Is interrupted on the way, and the printed circuit board tends to be defective. Similar inconvenience
It also occurs in other electronic component assembly equipment such as wire bonders.

As described above, in the conventional electronic component assembly apparatus, when the operation of the device is stopped in order to open the open / close cover, the device does not operate halfway while one operation is in progress. It is easy to cancel, resulting in various inconveniences. In order to eliminate such inconvenience, when opening and closing the cover and performing equipment maintenance and inspection,
It is desirable that the equipment be stopped with a break in its operation.

Therefore, according to the present invention, when the operator opens the open / close cover for maintenance and inspection of the device, the device is provided with a mechanism for opening the open / close cover after the device is operated in a single section. Another object of the present invention is to provide an electronic component assembly device.

[0006]

To this end, the present invention comprises a lock portion for locking the opening / closing cover and an opening / closing cover opening request switch. When the opening / closing cover opening request switch is turned on, the device is in operation. After moving to the standby position, the lock part unlocks and the open / close cover can be opened.

[0007]

According to the above construction, the locked state of the opening / closing cover cannot be released unless the operation of the device is divided into one section.
It is possible to solve the problem that the device stops operating in a halfway state when the opening / closing cover is opened.

[0008]

Embodiments of the present invention will now be described with reference to the drawings. 1 is a perspective view of an electronic component mounting apparatus according to an embodiment of the present invention, FIG. 2 is an internal plan view of the same, and FIG. 3 is a block diagram of the same control circuit.

In FIG. 1, an opening / closing cover 2 is mounted on the upper front portion of a cover box 1. The opening / closing cover 2 is opened and closed by rotating around the hinge 3 at the upper end thereof. A display 4, a keyboard 5, a cover switch SW1, an open / close cover opening request switch SW2, and an automatic operation start switch SW3 are provided on the front surface of the cover box 1. The cover switch SW1 is turned on / off in conjunction with opening / closing of the open / close cover 2. A lock portion 6 for locking the opening / closing cover 2 is provided inside the opening / closing cover 2.
In addition, a display lamp 7 is provided on the side to indicate that the lock is released. As the lock portion 6, for example, a solenoid is used.

In FIG. 2, the equipment described below is arranged inside the cover box 1. A conveyor 11 conveys the printed circuit board 10. Reference numeral 12 denotes a mounting head, and a nut portion 13 at the rear portion thereof is screwed with a feed screw 14 in the X direction. The feed screw 14 is disposed on the plate 15 and is driven by the X-direction motor 16 to rotate. When the X-direction motor 16 is driven and the feed screw 14 rotates, the mounting head 12 moves horizontally along the feed screw 14 in the X direction.

A Y-direction feed screw 17 and a guide rail 18 are disposed below both sides of the plate 15. A nut 19 that is screwed onto the feed screw 17 is attached to the lower surface of the left end portion of the plate 15. Therefore, the Y direction motor 2
When 0 drives and the feed screw 17 rotates, the plate 15
Moves horizontally in the Y direction, and the mounting head also moves in the Y direction. Reference numeral 21 is a base plate on which the feed screw 17 is arranged, and 22 is a base plate on which the guide rail 18 is arranged. A large number of parts feeders 23 such as tape feeders and tube feeders are arranged behind the conveyor 11. Parts feeder 2
3 has various kinds of electronic parts.

In the above structure, the X direction motor 16 and the Y direction motor
When the direction motor 20 is driven, the mounting head 12
Moves above the parts feeder 23, and picks up the electronic parts P provided in the parts feeder 23 there. Next, the mounting head 12 moves above the printed circuit board 10 and mounts the electronic component P on the printed circuit board 10 at predetermined coordinate positions. By repeating the above operation at high speed, a large number of electronic components P are mounted on the printed circuit board 10. When the mounting of the electronic component P is completed, the printed circuit board 10 is conveyed to the outside of the cover box 1 by the conveyor 11.

Next, the control circuit will be described with reference to FIG. Reference numeral 30 denotes a CPU as a control unit of the entire apparatus,
The X-direction motor 16 and the Y-direction motor 20 are controlled through two pulse generation circuits 31A and 31B and motor drivers 32A and 32B. The rotation angles of the X-direction motor 16 and the Y-direction motor 20 are encoders 33A and 33A, respectively.
It is fed back to the motor drivers 32A and 32B through B.

The lock unit 6, the display lamp 7, the cover switch SW1, the opening / closing cover opening request switch SW2, and the automatic operation start switch SW3 are connected to the CPU 30 through the input / output control unit 34. The cover switch SW1 is connected to the drive power supply 35 and the motor drivers 32A and 32B via the drive current switch SW4. The drive current switch SW4 turns on / off the cover switch SW1.
ON / OFF in conjunction with.

Next, the operation of the control circuit will be described. As described above, the mounting head 12 is moved in the X direction and the Y direction by driving the X-direction motor 16 and the Y-direction motor 20, and the electronic component P of the parts feeder 23 is vacuum-sucked to its nozzle. It is picked up and mounted on the printed circuit board 10. During operation of such a device, the open / close cover 2 is locked by the lock portion 6 and cannot be opened.

When it is desired to open the opening / closing cover 2 for maintenance and inspection of the equipment inside the cover box 1,
First, the opening / closing cover opening request switch SW2 is turned on. At this time, it is assumed that the mounting head 12 is vacuum adsorbing the electronic component to the nozzle and is transferring the electronic component to the printed board 10. Then, the CPU 30 receives the signal, and the X-direction motor 16
And a command signal is output to the Y-direction motor 20. As a result, the mounting head 12 does not stop the operation immediately, but after transferring the electronic components already vacuum-sucked to the upper side of the printed circuit board 10 and mounting them on the printed circuit board 10 (that is, until the ongoing operation is divided into one section). Continue to complete and then move to the standby position. In FIG. 2, the mounting head 1 shown by a chain line
2 indicates a standby position. This standby position is on the far side with respect to the opening / closing cover 2.

When the mounting head 12 moves to the standby position, the CPU 30 outputs a lock release command signal to the lock section 6, and the lock section 6 releases the locked state of the open / close cover 2. When the locked state is released, the indicator lamp 7 is turned on and the operator is informed accordingly. Then, the operator opens the opening / closing cover 2. Then cover switch SW
1 and the drive current switch SW4 are turned off. Therefore, the operator puts his / her head inside the cover box 1 and looks into the inside, or inserts his / her hand to perform maintenance / inspection of the equipment. As described above, in the present apparatus, the opening / closing cover 2 cannot be opened unless the mounting head 12 moves to the standby position, so that the inconvenience of the conventional apparatus described above can be solved. If the standby position of the mounting head 12 is set to the inner side of the opening / closing cover 2 as in this embodiment, the operator opens the opening / closing cover 2 and inserts his / her head or hand into the cover box 1 for maintenance and inspection work. Even if you go, head 1
There is no possibility of hitting the head 2 and the mounting head 12 hindering maintenance and inspection work. Therefore, it is desirable to set the standby position to a safety position on the back side as far away from the opening / closing cover 2 as in this embodiment.

When the maintenance of the equipment is completed, the operator closes the open / close cover 2. Then cover switch S
W1 and the drive current switch SW4 are turned on, and the device is ready for operation. Therefore, if the operator turns on the automatic operation start switch SW3, the device restarts operation. The lock portion 6 locks the open / close cover 2 again at an appropriate time point between the time when the open / close cover 2 is closed and the time when the operation is restarted.

Although the above embodiment has been described by taking the electronic component mounting apparatus as an example, the present invention can be applied to other electronic component assembly apparatuses such as a screen printing apparatus, a wire bonder, and a visual inspection apparatus. Also, when opening the open / close cover, the squeegee, capillary tool, laser irradiator, etc. complete the operation in progress and divide the operation into one section, then move to the standby position, and the open / close cover can be opened. Becomes

[0020]

According to the present invention, unless the device such as the mounting head moves to the standby position, the locked state of the open / close cover cannot be released and cannot be opened. Therefore, the open / close cover is opened unexpectedly. It is possible to prevent the device from stopping in an inconvenient state.

[Brief description of drawings]

FIG. 1 is a perspective view of an electronic component mounting apparatus according to an embodiment of the present invention.

FIG. 2 is an internal plan view of an electronic component mounting apparatus according to an embodiment of the present invention.

FIG. 3 is a block diagram of a control circuit of the electronic component mounting apparatus according to the embodiment of the present invention.

[Explanation of symbols]

 1 cover box 2 open / close cover 6 lock part 12 mounting head 16 X direction motor 20 Y direction motor 30 CPU SW1 cover switch SW2 open / close cover opening request switch SW3 automatic operation start switch

Claims (1)

[Claims] 1. An electronic component assembly apparatus comprising an opening / closing cover attached to a cover box in which an apparatus is arranged, the locking device locking the opening / closing cover, and an opening / closing cover opening request switch. When the opening / closing cover opening request switch is turned on, the device completes the operation in progress and then moves to the standby position, and then the lock portion releases the locked state, and the opening / closing cover can be opened. A characteristic electronic component assembly device.