JPS61265221A - Positioning device for electronic parts - Google Patents

Abstract

PURPOSE:To enable a device to position an electronic parts, even if it is in very small size and large in height, in a sure attitude, by providing a frame member, for preventing the electronic part from tumbling, in an electronic part positioning means correcting the attitude of the electronic part. CONSTITUTION:A positioning device, providing in a jig 30 a hole 31 for squared type positioning and preventing an electronic part 14 from tumbling, transfers the electronic part 14 to said hole 31 to be positioned by a reference surface 34. While the jig 30 provides a notch 37 for avoiding a burr in the electronic part 14. While a plate 29 provides in its upper part a mesh 35 for regulating a vacuum pressure and small holes 41 for a vacuum in several places. Behind the plate, the device provides a substrate holder 7 holding a printed substrate 8 in a standby state. In an upper part of these in the above, the device provides transfer heads 2a, 2b, transferring the electronic part 14, so as to simultaneously move in a direction D in the drawing.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an electronic component positioning device for an electronic component automatic mounting device that automatically mounts electronic components onto a printed circuit board.

2. Prior Art Conventional electronic component positioning means include, for example, Japanese Patent Laid-Open No. 157
As shown in Japanese Patent No. 147243, electronic components are sandwiched and positioned by claws from four directions along the The upper electronic component 14 is transferred and the L-shaped positioning jig 39 moves in the F direction (arrow) to the suction position 38 to perform positioning.

Problems to be Solved by the Invention However, the positioning device from four directions is complicated, has a large number of parts, and tends to be expensive.Also, although the structure shown in FIG. 5 is simple, As shown in Figure 6 (A), the electronic components 14 on the plate 29 and the mesh 7 (metal steel) 36 are pushed in the F direction by the jig 39 and are simultaneously moved to the suction position 38 of the transfer head. If the electronic component 14 is very small and tall as shown in Figure (b), it may fall in the direction of H2, and there is a risk that it will be attached to the printed circuit board as it is, resulting in the production of defective products. .

Therefore, the present invention has a simple structure, increases the positioning speed, prevents extremely small or tall electronic components from falling down, and enables stable positioning.

Means for Solving the Problems And, the technical means of the present invention for solving the above-mentioned problems is that the L-shaped positioning jig is provided with a frame to prevent it from falling over, making it a mouth-shaped jig.

For production The effect of this technical means is as follows.

Positioning is performed by the end face of the positioning jig, and when the electronic component is moved by the positioning jig and is about to fall, the frame member holds the electronic component on the opposite side of the reference surface to prevent it from falling. Let's do it.

As a result, the electronic component can be moved in a normal posture while positioning the center of the electronic component at the center of the suction position of the transfer head, and the moving speed can be increased.

Example Examples of the present invention will be described below.

First, the flow of the printed circuit board 8 will be explained.

In Fig. 1, the board stock 19 for stocking the printed circuit boards 8 on the left side from the front and the loader device (loader)
3, an extrusion device 5 for extruding and supplying printed circuit boards 8, and a conveyor 9.
The printed circuit board 8 is conveyed in the direction C to the circuit board holder 7 which moves in the directions , Y, and the electronic component 14 is mounted on the printed circuit board 8 positioned by the circuit board holder 7 . The mounting process will be described in detail later. On the right side of the front, a printed circuit board 8 on which electronic components 14 are mounted is moved to a lifter device (unloader) by an unloading guide rail 12 and an unloading device 11.
It is inserted into the substrate stock 4 held at 13. In front of the center is a jig 2o mounted on the electronic component supply device 21 on the X-Y table 15, which is fixed with a screw 33.
An electronic component 14 is attached to the bottom of the electronic component 14, and a push-up device 16 (
An electronic component positioning device 17 (hereinafter referred to as precenter) is provided behind the ejector. The center 17 is the base plate 28
A motor 24 for driving the Y axis and a guide rail 26 are provided on the top, a motor 23 and a guide rail 26 for driving the X axis are provided on the top, a plate 27 is provided on the top, and a block 261C is provided on the top. The attached jig 3o is fixed to screws 32, and a plate 29 is fixed to the base plate 28 at the bottom of the jig 30. The jig 3o has a hole 31 for positioning the mouth mold and preventing the electronic component 14 from falling.The electronic component 14 is transferred into the hole 31 and positioned using a reference surface 34. Also, jig 3
0 is provided with a notch 37 to prevent the electronic component 14 from collapsing.

A mesh (metal steel) 35 for adjusting the vacuum pressure is provided on the top of the plate 29, and the plate 29 is provided with several small holes 41 for vacuum. Board holder 7 with the printed circuit board 8 waiting behind it
is the provision. A transfer head 2a transfers the electronic component 14 onto these upper parts.

2b are provided so as to move simultaneously in the D direction.

The electronic component 14 is sucked by the nozzles 19a and 19b of the transfer heads 2a and 2b.

Next, we will discuss the effect. The electronic components 14 on the jig 20, arbitrarily selected by the electronic component supply device 21, are moved in the incoming direction by the X-Y table 15 and are waited at a suction position. At the top, the transfer head 2a moves in the D direction, the nozzle 19a descends in the E direction, picks up the electronic component 14, and at the same time moves up in the E direction, the ejector 16 at the bottom (not shown) rises and electronic components 1
Push up the bottom of 4. The transfer head 2a that has sucked the electronic component 14 is transferred to the hole 31 of the jig 3o of the pre-center 17, and the nozzle 19 stops vacuum suction and ascends. Third
, 4, when the jig 30 moves on the plate 29 in the F direction, the electronic component 14 remains in place due to the frictional resistance with the mesh (gold steel) 35 on the plate 29 and the vacuum pressure. However, when the jig 30 moves in the F direction, it contacts two surfaces of the reference surface 34, and the electronic component 14 is positioned, and the center of the electronic component 14 is moved to the center of the transfer head 2b, that is, the transfer head 2b. Move to the suction position. At this time, if the electronic component 14 is very small and tall, when the jig 30 moves in the F direction as shown in FIG.
The jig 3o that pushes the electronic component 14 tries to fall in the direction
The guide 4o on the opposite side of the reference surface 34 prevents the guide 4o from falling down and is positioned at the suction position in a normal posture. The nozzle i9b of the transfer head 2b descends in the E direction to suction the positioned electronic component 14, rises in the E direction, retreats in the D direction, and is mounted on the printed circuit board 8.

As mentioned above, as shown in Figures 3 and 4, the mouth shape Q is placed on the jig 3°.
By providing the hole 31 to which the guide 4o for preventing falling is provided, it is possible to prevent the extremely small and tall electronic component 14 from falling.

Effects of the Invention As described above, the present invention uses an L-shaped jig with a guide and a mouth-shaped jig to prevent extremely small and tall electronic components from falling over and to position them in a reliable posture. In order to
The production of defective products can be reduced, and an electronic component positioning device with a simple structure and excellent cost performance can be realized.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an electronic component automatic mounting device equipped with an electronic component positioning device according to an embodiment of the present invention, FIG. 2 is a perspective view of the same positioning device, and FIG. 3 is a perspective view of essential parts of the same positioning device. FIG. 4 is a sectional view of a main part of the jig of the positioning device, FIG. 5 is a partial perspective view of the conventional positioning device, and FIG. 6 is a sectional view of the same. 1... Electronic component automatic mounting device, 2... Transfer head, 3... Lifter device (loader), 4
... Board stock, 5 ... Extrusion device, 7 ... Board holder, 8 ... Printed circuit board, 9 ... Conveyor. 11... Carrying out device, 12... Carrying out guide rail, 13... Lifter device (unloader)
, 14... Electronic parts, 16... XY table, 16... Push-up device (ejector),
17... Positioning device, 19... Nozzle, 2
0... Jig, 30... Positioning jig,
31...Positioning hole, 34...Reference surface, 35...Mesh (gold steel), 4o...
・Guide frame to prevent falling.

Claims (1)

[Claims] An electronic component supply device that supplies electronic components, a transfer device that has a suction nozzle that sucks the electronic component, an electronic component positioning device that corrects the posture of the electronic component, and a conveyance device that conveys a printed circuit board, An electronic component positioning device characterized in that the electronic component positioning means is provided with a frame member for preventing the electronic component from falling.