JPH07105624B2 - Electronic component mounting machine - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic component mounting machine that mounts electronic components stored in a matrix-shaped tray on a printed circuit board.

2. Description of the Related Art A conventional electronic component mounting machine of this type has a structure as shown in FIG. 5, for example.

101 is a mounting head, which is mounted on the XY table 102, and is XY
It can be positioned at any position in the direction. Reference numeral 103 designates a matrix-shaped tray for storing electronic components, which are arranged at a total of four positions in the front and rear in this figure. Reference numeral 104 is a camera for capturing an image of the suction posture of the electronic component. 105 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 XY table 102 moves onto the camera 104. Then, the suction posture of the electronic component is imaged, the positional deviation amount of the suction posture is detected from the camera signal, the mounting head 101 corrects it, and the component is mounted on the printed circuit board 105.

Problems to be Solved by the Invention However, in the above structure, it takes a lot of time to switch the model when the tray size or the thickness is changed,
In addition, the number of tray types is limited because it cannot be made a long stroke due to the accuracy of the XY table. Also, if the clearance between the cavity of the tray and the outer size of the electronic component is large, the position of the electronic component in the cavity will fluctuate and will be sucked, which will cause the recognition error to occur when the posture is detected and the recognition error will occur. There was a problem.

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

Means for Solving Problems In order to solve the above problems, a tray box capable of accommodating a plurality of trays and a suction head for sucking and holding an electronic component from the tray box are mounted, and the electronic component is mounted. The first
An XY table that can be moved in a plane to a position, a slide table that transfers the electronic component from the first position to the second position, a position defining unit that positions the electronic component during transfer of the slide table, and The electronic head is sucked and held from two positions, and the mounting head is configured separately from the XY table.

Operation With the above configuration, it is sufficient to replace the tray box with a new one when switching the model, and it is possible to switch in a short time. Also,
Since the table for supplying the electronic components from the tray to the first position is separated from the mounting head, it is possible to easily increase the stroke and increase the number of tray types. Further, since the electronic component is centered in the process of moving the electronic component from the first position to the second position, the mounting head can suck and hold the electronic component. Furthermore, when moving to the upper part of the camera, the electronic parts will not come off the field of view of the camera.

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

In FIGS. 1 and 2 showing the entire electronic component mounting machine, 1
Are arranged in a removable manner in a tray box. 2 is Z
An electronic component is sucked and held by a suction head provided at the lower end by moving up and down on a shaft table. A Y-axis table 3 moves the Z-axis table in the Y direction. An X-axis table 4 moves the Z-axis table 2 and the Y-axis table 3 in the X direction. A centering table 5 conveys the electronic components transferred by the XYZ axis tables 4, 3, and 2 from the first position (A in the drawing) to the second position (B in the drawing) while positioning the electronic components. A mounting head 6 is movable up and down and in a rotating direction to perform suction mounting operation of electronic components. Reference numeral 7 denotes a moving body that moves the mounting head 6 from the second position (B in the drawing) between the printed circuit board 8 in the XY directions. Reference numeral 9 denotes a camera for picking up an image of the suction attitude of the electronic component. The camera signal corrects a minute positional deviation amount of the suction attitude in the rotation direction of the mounting head 6 and the XY directions of the moving body 7.

Details of the tray box 1 will be described with reference to FIG.
Reference numeral 10 denotes a matrix-shaped tray, which is stacked and stored. Reference numeral 11 is an electronic component, 12 is a positioning plate for the tray box 1, and 13 is a magnet for preventing the positional deviation of the tray box 1.

Next, details of the centering table 5 will be described with reference to FIG. Reference numeral 14 is a setting claw that positions the electronic component from four directions. Reference numeral 15 is a nozzle that sucks an electronic component and prevents displacement of the electronic component when the train wheel is released. Reference numeral 16 is a lever that opens and closes the train wheel setting claw 14, 17 is a spring that biases the train wheel setting finger 14 in the closing direction, and 18 is a plate cam that operates the lever 16 in the opening direction. 19 is a slide table. The first position (A in the drawing) is a position where the electronic components are moved on the XYZ axis tables 4, 3, 2 and the second position (B) is a position where the mounting head 6 sucks the electronic components. The slide table 19 moves between a first position and a second position.

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

First, the operation of the XYZ axis tables 4, 3, 2 will be described.
According to the order of mounting on the printed circuit board 8, the XY-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 upper surface of the electronic component 11, and rises after adsorption and holding. However, the XY-axis tables 4 and 3 are in the first position (A in the figure)
Move to. Subsequently, the Z-axis table 2 is lowered and electronic components are placed on the centering table 5 and raised.

The centering table 5 is in the second position (B in the figure).
When the movement is started, the XYZ axis tables 4, 3, 2 go to pick up the next electronic component to be mounted. In this way, the XYZ axis table repeats the cycle of sequentially supplying the electronic components from the tray box 1 to the centering table 5 according to the mounting order.

Next, the operation of the centering table 5 will be described. The electronic components supplied to the centering table 5 by the operation of the XYZ axis tables 4, 3, 2 are adsorbed by the nozzle 15. Next, when the slide table 19 starts moving from the first position (A in the figure), the lever 16 enters the valley of the plate cam 18, and the biasing force of the spring 17 causes the train wheel setting claw 14 to close from four directions, so that the electronic component Perform positioning. When the slide table 19 further moves, the lever 16 abuts against the crest of the plate cam 18, overcomes the urging force of the spring 17, and the train wheel setting claw is opened.
The position (B in the figure) is reached. In this way, the slide table 19 moves the first position (A in the drawing) to the second position (B in the drawing) to close and open the train wheel setting claw 14 to position the electronic component. Further, even if the train wheel setting claw 14 is opened, since the nozzle 15 sucks it, the positional deviation of the positioned electronic component does not occur. Subsequently, the mounting head 6 lowers the electronic component supplied to the second position (B in the figure), sucks and holds the electronic component, and ascends. The empty centering table 5 returns from the second position to the first position. In this way, the centering table 5 repeats the cycle of supplying the electronic components from the first position to the second position in the mounting order while positioning the electronic components.

Next, the operation of the mounting head 6 will be described. The mounting head 6 lowers the electronic components supplied to the second position by the centering table 5, sucks and holds them, and ascends. Subsequently, the moving head 7 moves the mounting head 6 onto the field of view of the camera 9, and images the electronic component suction posture of the mounting head 6. The printed circuit board 8 is mounted by moving while correcting the minute positional deviation amount between the camera signal and the preset XY coordinates in the rotation direction of the mounting head 6 and the XY direction of the moving body 7. The mounting head 6 is positioned at the proper position. Then, the mounting head 6 descends and mounts the electronic components, and ascends. Then, the component to be mounted next is sucked to the second position. As described above, the mounting head 6 is moved by the moving body 7 from the second position to the camera 9 position, the mounting position of the printed circuit board 8,
Then, it moves to the second position again to perform the mounting operation.

Next, replacement of the tray box 1 will be described. When changing the type of electronic parts by switching models, the tray box 1 is pulled out, and the tray box 1'containing a new tray is inserted to position the tray box 1'by the positioning plate 12 and the magnet 13. You can switch models with a single touch.

As described above, according to the present invention, since the trays are housed and arranged in the tray box, the tray boxes can be replaced when the models are switched, so that the positioning is reproducible and the switching can be performed in a very short time. .

In addition, XYZ that supplies electronic parts from the tray to the first position
Since the axis table is separated from the mounting head, there is no problem in accuracy and a long stroke can be achieved, and the number of tray types can be increased.

In addition, since the electronic components are positioned by the centering table while moving from the first position to the second position, the clearance of the cavity of the tray is large, and even if the positions of the electronic components in the tray vary greatly, the mounting head sucks them. However, when moving to the camera, it does not go out of the field of view of the camera, and no recognition error occurs. Therefore, the mounting rate can be improved.

[Brief description of drawings]

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 perspective view of a centering table. Figure,
FIG. 5 is a perspective view of a conventional electronic component mounting machine. 1 ... Tray box, 2 ... Z-axis table, 3 ... Y-axis table, 4 ... X-axis table, 5 ... Centering table, 6 ... Mounting head, 9 ... Camera, 14 ... Regulating claw , 15 …… Nozzle, 16 …… Lever, 18 …… Plate cam, 19…
… Slide table.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Yoshihiko Misawa 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) Reference JP 57-145394 (JP, A) JP 61-61500 (JP, A) Actually opened 62-168700 (JP, U)

Claims (4)

[Claims] 1. An electronic component mounting machine for sequentially mounting electronic components housed in a matrix-shaped tray, and a tray box capable of accommodating a plurality of the trays stacked together, and a suction device for sucking and holding electronic components from the tray box. XY that mounts a head and can move its electronic parts in a plane to the first position
A table, a slide table that transfers the electronic component from the first position to the second position, a position defining unit that positions the electronic component during the transfer of the slide table, and the electronic component from the second position. An electronic component mounting machine comprising a mounting head that is suction-held and that is configured separately from the XY table and is movable in a plane. 2. An image pickup section for picking up an image pickup posture of an electronic component of the suction head is provided, and a minute positional deviation amount of the suction posture is detected from a signal of the image pickup section so that the mounting head corrects and mounts the component. The electronic component mounting machine according to claim 1, characterized in that 3. The electronic component mounting machine according to claim 1, wherein the tray boxes are removably configured so as to be reproducible in position, and a plurality of tray boxes are arranged. 4. The position defining portion includes a nozzle for adsorbing an electronic component, a setting claw for positioning the electronic component, a plate cam for opening the setting claw, and a slide table for moving the nozzle and the setting claw. Claim 1 constituted by
Electronic component mounting machine according to the item.