JPH01117398A - Electronic component mounting equipment - Google Patents

Abstract

PURPOSE:To enable the disposal of all empty trays by a single sucking head even if trays of plural kinds are arranged in plural layers by a method wherein a sucking head, which sucks an empty tray and is movable up and down, is provided to a X-Y axis table, and a height detecting section which detects that the sucking head descends down and reaches the upper face of the empty tray is provided. CONSTITUTION:A sucking head 3 is made to transfer just above an empty tray 10 by X-Y axis tables 5 and 4. Then, the sucking pads, for example, 12 and 14 previously set by a program begin to suck as an air cylinder 15 starts decending. A height detector 16 starts operating when the sucking pad reaches to the upper face of the tray 10 as descending, and then the air cylinder 15 starts ascending. If a suction detector 17 is in operation when the air cylinder reaches to the upper limit, it is judged that the tray 10 is still sucked by the sucking pad. Next, the sucking head 3 is made to transfer to a position of a case 9 which encloses a waste tray through the X-Y tables 5 and 4, then the empty tray 10 is disposed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an electronic component mounting machine that mounts electronic components stored in a matrix tray onto a printed circuit board.

2. Description of the Related Art A conventional tray disposal method for this type of electronic component mounting machine has a structure as shown in FIG. 4, for example. 1o1 is a mounting head which is mounted on the XY table 102 and can be positioned at any position in the xY force directions. 103 is a printed circuit board. Reference numeral 104 denotes a toy supply section, and in this figure, four needles are arranged at front and rear needles. 105 is a matrix-shaped tray that stores electronic components, and 106 is a tray that is stocked. 107 is a shutter, 108 is a chute, and 109 is a box for collecting empty trays.

In operation, the mounting head 101 sucks and holds the electronic components in the tray 105, and the XY table 102 moves them to a predetermined position on the printed circuit board 103 to mount them. By repeating this operation, the shutter 107 is opened to empty the tray 106, the tray 106 slides down the chute 108, and is collected in the box 169. Next, the shutter 107 is closed and a new sheet is supplied from the stocked tray 106.

Problems to be Solved by the Invention However, the above structure requires a tray disposal mechanism and an empty tray collection box for each tray supply section, making the structure complex and expensive.

Further, there are problems such as the mechanical space required for one type of tray becomes large.

The present invention solves the above-mentioned problems, and provides an electronic component mounting machine equipped with an empty tray disposal device that can dispose of multiple types of trays with one tray disposal mechanism and can be made smaller in terms of space. It is something.

Means for solving the problem In order to solve the above problem, a vertically movable suction head for discarding empty trays is installed on the XY-axis table, and a system is used to detect when the suction head descends and reaches the top surface of the tray. The apparatus is composed of a height detection section for detecting a height, a plurality of suction circuits whose suction positions within the suction head can be programmably switched, and a suction detection section for detecting that a tray has been suctioned.

Operation With the above configuration, when a tray becomes empty, the XY table moves to the position of the tray, the suction head descends, and the suction circuit specified in advance in the program is activated. When the suction head reaches the upper surface of the tray, the height detection section is activated and the suction head rises. The suction detection section determines whether or not the tray is suctioned when the tray is raised. In the case of NG, the suction head descends again and performs the suction operation. If OK, the XY table moves to a predetermined disposal stage, the suction circuit is turned off, and the tray is discarded.

In this way, a single tray disposal mechanism is configured to discard a plurality of types of trays at the same location.

EXAMPLE Hereinafter, an example of the present invention will be described based on FIGS. 1 to 3.

In FIGS. 2 and 3 showing the entire electronic component mounting machine,
A plurality of tray boxes 1 are arranged to store trays. 2 is a two-axis table that moves up and down to suction and hold electronic components. 3 is a suction head that suctions the empty tray. 4
is a Y-axis table, which drives the two-axis table 2 and suction head 3 in the Y direction. 5 is an X-axis table that drives the Y-axis table in the X direction. 6 is a moving jig, which is the above-mentioned X.

The electronic components transferred by the Y and Z axis tables 5, 4.2 are transported from the first position (A in the figure) to the second position (B in the figure). 7 is a mounting head that picks up the electronic component from the second position and mounts it onto the printed circuit board s.

9 is a box for storing the discarded 9 trays.

Details of the suction head 3 will be explained based on FIG. 1. The suction head 3 is mounted on the XY-axis tape A/6°4.

A plurality of matrix-shaped trays 1o are stacked one on top of the other and stored in the tray box 1. 11 is an electronic component. The suction head 3 is provided with a plurality of suction pads measuring 12 degrees and 13.14 degrees. The suction of the suction bats 12, 13 and 14 can be switched programmably depending on the shape of the tray. 1
6 is an air cylinder 7 that moves the suction head 3 up and down, 1
A height detector 6 detects when the suction head 3 has descended and reached the upper surface of the tray 10. 17 is tray 1
This is a suction detector that detects that ゜ has been reliably suctioned.

Next, the operation of the configuration of this embodiment will be explained. First, the mounting operation of electronic components will be briefly explained. In accordance with the order of mounting on the printed circuit board 8, the XY-axis table 4.6 moves to the position of the electronic component 11 in the tray box 1, then the two-axis tape A/2 descends, picks up the electronic component 11, and then rises. do. Next KXY axis chi 7”/L15, 4
is moved to the first position (A in the figure) and transferred to the moving jig 6. When the moving jig 6 starts moving to the second position (B in the figure), the XYZ-axis tables 5, 4.2 go to pick up the next electronic component to be mounted. The moving jig 6 on which the electronic component has been transferred moves to the second position, and the mounting head 7 descends to adsorb it. The empty moving jig 6 returns to the first position. Next, the mounting head 7 moves to the position where the printed circuit board 8 is to be mounted, and mounts the electronic component thereon.

Then it moves to the second position. By repeating the above operations, electronic components are sequentially mounted on the print board 8.

Next, the operation of discarding an empty tray will be explained.

The suction head 3 is moved directly above the empty tray 1o by the XY-axis table 6.4. Next, the air cylinder 16 starts to descend, and the suction vat (for example, 12.14) set in advance in the program starts suction. Subsequently, the height detector 16 is activated so that the suction head 3 descends and reaches the upper surface of the tray 1o, and the air cylinder 16 begins to rise. If the suction detector 17 is activated when the upper limit is reached, it is determined that the tray 1o is being suctioned. If the suction detector 17 is not operating, the suction head 3 is lowered again and a suction adhesion trial is performed. Next, the suction head 3
Box e for storing the waste tray with shaft tape A15,4
The tray is moved to the position shown in FIG.

Effects of the Invention As described above, the present invention includes an XY-axis table for sucking and holding electronic components from a tray and transferring them to a predetermined position, and a vertically movable suction head for sucking an empty tray to this XY-axis table. A height detection unit is installed to detect when the suction head has descended and reached the top of the tray, so even if multiple trays of multiple types are arranged, a single suction head can dispose of all empty trays. is possible.

Furthermore, since the suction position of the suction head can be switched programmably, an empty tray can be reliably suctioned with one suction head even if the tray shape or size changes.

Furthermore, since it is equipped with a suction detector, suction and disposal of empty trays can be reliably detected, making it an electronic component mounting machine equipped with a highly reliable empty tray disposal device.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a tray disposal device of an electronic component mounting machine according to an embodiment of the present invention, FIG. 2 is a plan view of the electronic component mounting machine, FIG. 3 is an overall perspective view of FIG. 2, and FIG. The figure is a perspective view of a conventional electronic component mounting machine. 3... Suction head, 4... Y-axis table, 6...-X-axis table, 12, 13, 14...
...Suction vat, 16----Height detector, 1
7----... Adsorption detector 0 Name of agent Patent attorney Toshio Nakao and one other person Figure 3 Figure 4

Claims (1)

[Claims] In an electronic component mounting machine that sequentially mounts electronic components stored in a matrix-shaped tray, there is a table that can be moved on a plane to suction and hold electronic components from the tray and transfer them to a predetermined position, and a top and bottom table that suctions empty trays to this table. A movable suction head is provided, a height detection unit detects when the suction head has descended and reached the top surface of the tray, and a plurality of suction circuit switches are provided that can programmably switch suction positions within the suction head. An electronic component mounting machine comprising a suction detection section and a suction detection section that detects that a tray is suctioned.