JPH01117397A - Electronic component mounting equipment - Google Patents

Abstract

PURPOSE:To enable positioning of a component to be reproducible through the substitution of a tray case and the switching-over of a product to take place in a short period when the product is switched over by a method wherein an electronic component mounting equipment is composed of a tray case which contains trays, tables which transfer a component from the tray to a first position as sucking and holding it, a position designating section which makes positioning of the component transferring it from the first position to a second position, and a mounting head section which sucks the above component from the second position and holds. CONSTITUTION:An electronic component mounting equipment is composed of tray cases 1 which hold trays and are arranged to be attachable and detachable so as to retain a positional reproducibility, X-Z tables 4-2 which sucks the electronic component from the tray as holding and transfers it to a first position, and a center table 5 which makes positioning of the electronic component transferring it from the first position A to a second position B. When a product is switched over, the tray case 1 only is made to be replaced with a new one, so that the switch of the product can be accomplished in a short period. A table, which supplies an electronic component from a tray to the first position a, is separated from a mounting head, so that it can be easily lengthened in its stroke and the trays can be increased in kind.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronic component mounting machine that mounts electronic components stored in a matrix-shaped tray onto a print F board.

2. Description of the Related Art A conventional electronic component mounting machine of this type has a structure as shown in FIG. 6, for example.

A mounting head 101 is mounted on an X, Y table 102 and can be positioned in the X-Y direction.

Reference numeral 103 is a matrix-shaped tray that stores electronic components, and in this figure, four needles are arranged at the front and rear.

Reference numeral 104 is a camera that images the suction posture of electronic components.

106 is a printed circuit board. 106 is a stocked tray. In operation, the mounting head 101 sucks and holds the electronic components in the tray 103, and the X, Y table 102 moves above the camera 104. Therefore, the suction posture of the electronic component is imaged, the amount of positional deviation of the suction posture is detected from the camera signal, and the electronic component is corrected by the mounting head 101 and mounted on the printed circuit board 105.

Problems to be Solved by the Invention However, with the above structure, it takes a lot of time to change one model when the tray size or thickness changes, and the number of tray types is long due to the accuracy of the X and Y tables. Unable to make strokes and is limited.

In addition, if the clearance between the tray cavity and the electronic components is large, the position of the electronic components may vary within the cavity, and the electronic components may be attracted and moved out of the camera field of view during posture detection, causing recognition errors and not being able to be mounted. There was a problem.

The present invention solves the above-mentioned problems, and provides an electronic component mounting machine that has good one-model switchability, no recognition errors, and a high mounting rate.

Means for Solving Target Points In order to solve the above problems, tray boxes containing trays are arranged in a removable manner so that the positions are reproducible, and electronic components are suctioned and held from the trays.

It is composed of an XY and Z table for transferring to the first position, and a positioning section for positioning the electronic component while transferring it from the first position to the second position.

Operation With the above-described configuration, when changing one model, it is only necessary to replace the tray box with a new one, and the change can be made in a short time. Also,
Since the table for feeding electronic components from the tray to the first position is separated from the mounting head, it is easy to make the stroke longer, and the number of types of trays can be increased. In addition, electronic components are the first
Since the electronic component is centered in the process of moving from the position to the second position, the electronic component can be suctioned and held by the mounting head. When you move further to the top of the camera,
Electronic components no longer fall out of the camera's field of view.

Embodiment One embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

In Figures 1 and 2 showing the entire electronic component mounting machine, 1
are arranged in a removable tray box. 2 is Z
The axis table moves up and down to suck and hold electronic components. 3 is a Y-axis table that moves the Z-axis table in the Y direction. 4
is the X-axis table and the Z-axis table 2 and YM table 3
Move in the X direction. Reference numeral 5 denotes a centering table that moves the electronic components transferred by the x, y, and z axis tables 4 and 3.2 from the first position (A in the figure) to the second position (B in the figure).
) to transport electronic components while positioning them.

Reference numeral 6 denotes a mounting head which is movable up and down and in rotational directions and performs suction and mounting operations for electronic components. 7 sets the mounting head e to the second
It is a moving body that moves between the printed circuit boards 8 in the X-Y direction from the position (B in the figure). 9 is a camera that takes images of the suction posture of electronic components, and the amount of minute positional deviation of the suction posture is detected by the camera signal.

Correction is made in the rotational direction of the mounting head 6 and in the X-Y direction of the moving body 7.

Details of the tray box 1 will be explained based on FIG. 3.

Numeral 10 is a matrix-like tray in which a plurality of sheets are stacked and stored. 11 is an electronic component, 12 is a positioning plate for the tray box 1, and 13 is a magnet for preventing the tray box 1 from shifting.

Next, details of the centering table 5 will be explained based on FIG. 4. Reference numeral 14 indicates a regulating claw for regulating the position of the electronic component from four directions. Reference numeral 16 denotes a nozzle that sucks electronic components and prevents the electronic components from shifting when the regulation is released.

16 is a lever that opens and closes the regulating claw 14; 17 is the regulating claw 14;
The spring 18 that urges the regulating claw 14 in the closing direction is a temporary cam that operates the lever 16 in the opening direction. 19 is a slide table. The first position (illustrated A) is X, Y,
At the position where the electronic components are moved using the Z-axis table 4, 3.2,
The second position (B in the figure) is a position where the mounting head 6 attracts the electronic component. The slide table 19 moves between a first position and a second position.

Next, the operation of the configuration of this embodiment will be explained.

First, the operation of the x, y, and z axis tables 4, 3.2 will be explained. According to the order of mounting on the printed circuit board 8,
, the Y-axis tables 4 and 3 move to the position of the electronic component 11 in the tray box 1, then the Z-axis table 2 descends to the top surface of the electronic component 11, holds it by suction, and then rises.
, 3 move to the first position (A in the figure). Subsequently, the Z-axis table 2 descends, places the electronic components on the centering table S, and ascends.

And the centering table 5 is in the second position (illustration B)
When you start moving to x, y, z axis table 4, 3
．． 2 goes to pick up the next electronic component to be mounted. In this way, the x-, y-, and z-axis tables repeat a cycle of sequentially supplying electronic components from the tray box 1 to the centering table 5 according to the mounting order.

Next, the operation of the centering table 6 will be explained. The electronic components supplied to the centering table 6 by the operation of the X, Y, and Z axis tables 4 and 3.2 are sucked by the nozzle 16. Next, when the slide table 19 starts to move from the first position (A in the figure), the lever 16 enters the valley of the plate cam 18, and with the biasing force of the spring 17, the regulating pawl 1
4 closes from four directions and positions the electronic components.

When the slide table 19 moves further, the lever 16
comes into contact with the peak of the plate cam 18, overcomes the biasing force of the spring 17, opens the regulating pawl, and reaches the second position (-B in the figure). In this manner, in the process of moving the slide table 19 from the first position (A in the figure) to the second position (B in the figure), the regulating claws 14 close and open to position the electronic component.

Furthermore, even if the regulating claw 14 is opened, the position of the electronic component that has been placed in one position will not shift because the nozzle 16 is sucking it.

Does not occur. Subsequently, the mounting head 6 descends to hold the electronic component supplied to the second position (B in the figure) by suction, and then rises. The empty centering table 6 returns from the second position to the first position. In this manner, the centering table 6 repeats a cycle of supplying electronic components from the first position to the second position while positioning the electronic components in accordance with the mounting order.

Next, the operation of the mounting head 6 will be explained. The mounting head 6 descends, holds the electronic component supplied to the second position by the centering table 6, and then ascends. Subsequently, the mounting head 6 is moved by the moving body 7 onto the field of view of the camera 9, and the electronic component suction posture of the mounting head 6 is imaged. With that camera signal.

The position where the printed circuit board 8 should be mounted is determined by moving the mounting head 6 in the rotation direction of the mounting head 6 and the moving body 7 in the X and Y directions while correcting the preset X, Y coordinates and #J- positional deviation. The mounting head 6 is positioned. Subsequently, the mounting head 6 descends, mounts the electronic component, and ascends. Then, the parts to be mounted in the first position are suctioned to the second position. this)
Like 1. The mounting head 6 is moved by the movable body 7 from the second position to the camera 9 position, to the printed circuit board 8 mounting position, and then back to the second position to perform the mounting operation.

Next, replacing the tray box 1 will be explained. When changing the type of electronic components due to model switching, etc., the tray box 1 is pulled out and the tray box 1' containing the new tray is inserted, and the positioning plate 12 and magnet 13 position the tray box 1'. , you can switch models with one touch.

Effects of the Invention As described above, in the present invention, the trays are stored and arranged in tray boxes, so when changing one model, positioning can be reproducible by replacing the tray box, and switching can be done in a very short time. .

Also, x, y supplies the electronic components from the tray to the first position.
Since the z-axis table is separated from the mounting head, there are no problems with accuracy, a longer stroke can be achieved, and the number of tray types can be expanded.

Furthermore, since electronic components are positioned using a centering table while being moved from the first position to the second position, the clearance of the cavity of the tray is large.

Even if the positions of electronic components vary greatly in the tray, when they are picked up by the mounting head and moved onto the camera, they will not fall out of the camera's field of view, and no recognition errors will occur. Therefore, the attachment rate can be improved.

[Brief explanation of the drawing]

Fig. 1 is a plan view of an electronic component mounting machine according to an embodiment of the present invention, Fig. 2 is an overall perspective view of Fig. 1, Fig. 3 is a perspective view of a tray box, and Fig. 4 is a center ring. A perspective view of the table, and FIG. 6 is a perspective view of a conventional electronic component mounting machine. 1...Tray box, -2...2-axis table, 3...Y-axis table, 4...X-axis table, 6...・Centering table, 6
... Mounting head, 9 ... Camera, 14
...Regulation claw, 16...Nozzle, 16.
...Lever, 18...Plate cam, 19...
...Sliding table. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Figure 3

Claims (5)

[Claims] (1) In an electronic component mounting machine that sequentially mounts electronic components stored in a matrix-shaped tray, a tray box that stores the tray and electronic components are sucked and held from this tray box and transferred to a first position. An electronic component mounting machine comprising a table, a position defining section that positions an electronic component while transferring it from a first position to a second position, and a mounting head section that sucks and holds the electronic component from the second position. (2) An imaging section is provided to take an image of the electronic component suction posture of the mounting head, and a minute positional deviation of the suction posture is detected from a signal from the imaging section, and the mounting head corrects it before mounting. An electronic component mounting machine according to claim 1. (3) The electronic component mounting machine according to claim 1, wherein the tray box is configured to be detachable so as to have positional reproducibility, and a plurality of tray boxes are arranged. (4) The electronic component mounting machine according to claim 1, wherein the table can be positioned in three-dimensional directions by numerical control, and the tip is configured to attract electronic components. (5) The position regulating section is composed of a nozzle that sucks the electronic component, a regulating claw that positions the electronic component, a plate cam that releases the regulating claw, and a slide table that moves the nozzle and the regulating claw. An electronic component mounting machine according to claim 1.