JPH0354898A - Electronic component mounting device - Google Patents

Abstract

PURPOSE:To accelerate a component supply unit by providing a second moving table movable in parallel on a first moving table movable in parallel. CONSTITUTION:A mounting component supplying unit 2 to a board 10 is mounted on a moving table 11a, and the board 10 is supported to a predetermined position by securing means 7 of a positioning unit. Components are sequentially held from a supplying position 1a by a head 5 of a unit 3, a table 4 is rotated, and moved to a mounting position 3a. A unit 6 moves the board 10 in X- and Y-directions, set to the position 3a, and the head 5 is mounted. The table 11a is driven by a ball screw and a nut or a rack and a pinion, and the table 11b is driven by a linear motor. When one table is roughly operated and the other is finely operated and composed of a position returning loop, its positioning accuracy is improved. With this structure, an increase in an inertia due to an increase in size of the moving table can be coped.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a component mounting apparatus used for sucking electronic components and mounting them on a circuit board.

Conventional technology Conventionally, as an electronic component mounting apparatus for mounting electronic components onto a circuit board, a plurality of component supply units containing a large number of electronic components are arranged in parallel and installed on a movable table, and this movable table is used as a component supply unit. By configuring the parts to be movable in the parallel direction, it is possible to take out the electronic components housed in any component supply unit at a predetermined position, and the position on which the electronic components of the circuit board should be mounted is at a predetermined position. It is well known that a device is provided with a means for positioning a supplied circuit board, and a component mounting means for holding an electronic component at the predetermined component removal position and mounting the component at a predetermined position on the positioned circuit board. ing.

Problems to be Solved by the Invention In such an electronic component mounting apparatus, in order to be able to handle the case where many types of electronic components are mounted on one circuit board, it is also possible to replace the component supply unit when changing the type of circuit board. If a large number of component supply units are installed on the moving table in order to reduce the loss time due to switching, the moving table becomes larger and the driving force of the moving means must be increased. figure,
In addition, there are problems such as increasing the inertia, making it difficult to increase the speed.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a component supply unit that is movable in parallel directions above a first moving table that is movable in parallel directions and above the first moving table (1). The present invention is characterized in that it has a second movable table, on which a plurality of the component supply units are installed.

According to the present invention, the component supply section has a first moving table that is movable in parallel directions, and a second moving table that is movable in parallel directions above the first moving table. Speed-up can be achieved.

Furthermore, positioning accuracy can be improved by configuring a position feedback loop in which one moving table is coarsely moved and the other moving table is finely moved.

Example Hereinafter, one embodiment of the present invention will be described based on FIG. 2.

In FIG. 2, reference numeral 1 denotes a component supply section in which a large number of component supply units 2 are arranged in parallel.As will be explained in detail later, the component supply unit 1 is constructed so that any component supply unit 2 can be positioned at a predetermined component supply position 1a. It's hollowed out. The component supply unit 2 is equipped with a tape-shaped component assembly holding a large number of components in a line, and is configured to be able to sequentially feed the components to a component take-out position 2a provided at one end.

Reference numeral 3 denotes a rotating component mounting unit, in which a plurality of mounting heads 5 are arranged at equal intervals on a rotary table 4 that can be rotated intermittently around a fixed axis. The rotary table 4 rotates intermittently at intervals of the mounting heads 5, and the stopping positions of the mounting heads 5 are set as appropriate at the component supply position 1a and the component mounting position 3a. The mounting head 5 is equipped with a suction nozzle (not shown) that is movable up and down, and is located at the component supply position 1.
Go down at step a and pick up the parts, then go up and move to part mounting position 3.
It is configured such that it descends at point a and releases the suction of the component, and then rises after mounting the component.

Reference numeral 6 denotes a positioning unit for the circuit board 10 on which components are to be mounted, and the circuit board 10 is supplied by a supply means (not shown).
A fixing means 7 for fixing and supporting the
is placed on a Y table 9 that is movable in the Y direction, and is configured such that the fixedly supported circuit board 10 can be positioned at any desired position at the component mounting position 3a.

Next, the structure of the component supply section 1 will be explained in detail. A plurality of the component supply units 2 are installed in parallel on the second moving table lla. This second moving table lla
are movably supported along a linear drive motor 12 extending in the parallel direction of the component supply unit 2, and this linear drive motor is installed on the first moving table llb. This first moving table llb is supported so as to be freely movable along a guide frame 13 extending in the parallel direction of the component supply units 2, and a ball screw glaze 14 is disposed on one side of the guide frame 13, and a nut portion thereof is provided with a ball screw glaze 14. is fixed to the first moving table llb. One end of the ball screw shaft 14 is attached to the output shaft of the drive motor 15. Here, the length of the guide frame 13 is at least twice as long as the second moving table 1) a, and the lengths of the linear drive motor and the ball screw shaft are such that the sum of their respective lengths is at least twice as long as the second moving table 1) a. Moving table 1) Requires at least twice the length of a.

Next, the operation will be explained. First, a plurality of component supply units 2 containing various components to be mounted on the circuit board 10 are installed on the second moving table 1)a.

Further, the circuit board 10 is placed in the positioning unit 6 by the supply means.
It is supplied to the fixing means 7 of and fixedly supported at a predetermined position.

From this state, the moving tables lla and llb each move, and based on the preset parts mounting order,
The component supply units 2 containing components to be mounted are sequentially positioned corresponding to the component supply position 1a. At this time, the moving distance and moving speed of each moving table are determined so that this positioning time is the shortest.

The components thus positioned at the component supply position 1a are sequentially held by the mounting head 5 of the component mounting unit 3, and then moved to the component mounting position 3a by rotation of the rotary table 4. On the other hand, the circuit board 10 is moved in the X and Y directions by the positioning unit 6, and the position where components are to be mounted is sequentially positioned at the component mounting position 3a according to the preset component mounting order, and the mounting head The components held at step 5 are sequentially mounted at predetermined positions on the circuit board 10.

Note that the means for moving the moving tables lla, llb is not limited to the linear drive motor 12 or the combination of the ball screw shaft 14 and the nut part, but a rack and a pinion or the like may be used. Further, in the above embodiment, an example is shown in which a rotating type component mounting unit 3 is used and the circuit board 10 is moved in the X and Y directions so that the position where a component is to be mounted matches the fixed component mounting position 3a. However, the circuit board 10 may be fixedly installed or moved only in one direction, and the mounting head 5 may be placed on the circuit board 10.
It goes without saying that the parts may be moved to any position where they are to be mounted, and that similar effects can be obtained with an inserter.

Furthermore, it goes without saying that there may be a plurality of moving tables.

Effects of the Invention According to the present invention, the component supply section has a movable table movable in the parallel direction and a movable table movable in the parallel direction on the movable table, and the positioning time of the component supply section is minimized. By determining the speed and distance of each movement, speeding up can be achieved.

Further, by making the movement of one of the moving tables a slight movement and further configuring a position feedback loop, effects such as improved positioning accuracy can be obtained.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a main part of an electronic component mounting apparatus according to an embodiment of the present invention, and FIG. 2 is a plan view of the entire same according to the present invention. 1... Parts supply section, la... Parts supply position, 2... Parts supply unit, 3...
・Component mounting unit, 4...Rotary table, 5
... Mounting head, 6... Positioning unit, 7... Positioning unit fixing means, 8,
9...X-Y table unisoto, 10...
...Circuit board, lla...Second moving table,
1) b...First moving table, 12a...
...Linear [dynamic motor, l3...Guide frame, 14...Pole screw shaft, 15...
drive motor.

Claims (3)

[Claims] (1) a component supply section in which a plurality of component supply units are installed in parallel to sequentially send out a plurality of stored components to a predetermined component extraction position; a mounting member positioning means for positioning a mounting member on which the component is mounted; A component mounting device comprising a component mounting means for holding a component at a predetermined position of the component supply section and mounting the component on the mounting member,
The component supply unit has a first moving table that is movable in parallel directions, a second movable table that is movable in parallel directions on top of the first moving table, and a plurality of the component supply units are mounted on the second movable table that is movable in parallel directions. Electronic component mounting equipment installed. (2) The electronic component mounting apparatus according to claim 1, wherein the drive section of the first movable table is constituted by a ball screw and a nut, and the drive of the second movable table is constituted by a linear drive motor. (3) The electronic component mounting apparatus according to claim 1, wherein the first moving table is driven by a rack and a pinion, and the second moving table is driven by a linear drive motor.