JPH03245551A - Board transfer device - Google Patents

Abstract

PURPOSE:To enable a board transfer device to automatically execute a preparatory work for the processing of a wafer which the device concerned transfers by a method wherein a mechanism in which the position and the moving stroke of a transfer lever and the position of a transfer guide are automatically changed by an NC program, is provided. CONSTITUTION:The positions of a transfer 20b of a transfer conveyer 14, a transfer guide 20a of a transfer conveyer 4, and a transfer lever A6 in a widthwise direction are set through NC data corresponding to the size of a printed board A5 and the position of a positioning hole 3. In a manufacturing process, the transfer conveyers 14 and 4 and the transfer levers A6 and B10 are made to descend. Then, the printed board A5 is transferred to a set position on an X-Y table 2. Concurrently, a printed board B5a on the X-Y table 2 is transferred by the transfer conveyer 14. The X-Y table 2 moves a printed board 5 in the directions of X-Y controlling it. The printed board 5 is moved under a mounting head 1, and a component is mounted on the printed board.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a conveyance device for conveying a printed circuit board on which electronic components are mounted to a predetermined position.

BACKGROUND OF THE INVENTION In recent years, the shapes and sizes of printed circuit boards on which electronic components are mounted have become diverse, and there has been a desire to shorten the time required to change models and to make the devices unmanned for transporting these circuit boards.

Conventionally, this type of substrate transfer device generally had a configuration as shown in FIGS. 6 and 7. The configuration will be explained below based on the drawings. As shown in the figure, the conveyor container 4 moves the printed circuit board 5 to a set position, that is,
- It is designed to be conveyed to the Y table 2. In addition,
The printed circuit board 5 has positioning holes 3 at predetermined positions on both sides. The X-Y table 2 sets the positioning hole 3 of the printed circuit board 5a sent from the previous process with the adjustment pin]
After the adjustment in step 3, it moves in the X-Y direction. In the mounting head 1 adjacent to the X-Y table 2,
Printed circuit board 5a transported to X-, Y table 2
Electronic components are mounted on top of the . The transport lever 86 and the transport lever BIO located on the side of the transport conveyor 4 are connected by a connecting guide 8, and the transport positioning pin 7 fixed to the tip of the transport lever A6 is used to position the printed circuit board 5. The printed circuit board 5 is inserted into the hole 3 and transported onto the XY chiffle 2 by moving the transport lever A6. The connecting guide 8 to which the conveying lever 6 is connected can be moved rightward and leftward by a first cylinder All, and the cylinder All is fixed to a base 9. The printed circuit board 5a on which components are mounted on the X-Y table 2 is moved to the aforementioned transport lever 10.
It is pushed out by a conveyor 14, and is carried out by a carrying-out conveyor 14. The second cylinder B1 as shown in FIG.
8 is directly connected to the base 9, so that the entire base 9 can be moved up and down. The base 9 is provided with a slide shaft 15, and this slide shaft 15 is fitted into the guide block 16 of the main body base 17 with a certain clearance.
is designed to move up and down smoothly. Further, the main body base 17 is provided with a third cylinder C19, and this cylinder C19 is connected to the carry-out conveyor 14 by a bracket 20, so that the carry-out conveyor 14 is moved up and down.

Although not shown, the conveyor 4 is also provided with a mounting head.

The operation of the conventional substrate transport device described above will be described below. As shown in FIG. 6, by driving the second and third cylinders B18 and C19, the base 9 with the transport lever A6 and the transport conveyor 411: the output conveyor 14 are lowered. And the first
By driving the cylinders All, the connecting guide 8 is moved from the state shown in FIG. 6 to the left side as shown in FIG. 8. By moving the connecting guide 8 to the left, the printed circuit board 5a on the XY child table is carried out to the carry-out conveyor 14 by the conveying lever BIO connected to the connecting guide 8. At this time, the regulation pin 13 for positioning the XY table 2 is lowered to release the regulation of the printed circuit board 5a. At the same time, with the transport positioning pin 7 attached to the tip of the transport lever A6 inserted into the positioning hole 3 of the printed circuit board 5 as shown in FIG. 5 onto the X-Y table 2.

Next, when each of the printed circuit boards 5 and 5a has been transported, the second. By driving the third cylinder B18 and cylinder C19, the conveyor 4. The base 9 with the unloading conveyor 14 and the transport lever is raised. Then, as shown in FIG. 6, the connecting guide 8 with the transport lever 6.10 attached to the first cylinder A11 is moved to the right side in the drawing to complete the transport-related operation.

Note that the regulation pin 13 for positioning the X-Y table 2 is
Transfer the printed circuit board 5 to the X-Y table 2 using the transfer lever A6.
The printed circuit board 5a is conveyed onto the printed circuit board 5a, and after the conveyance lever A6 is raised, it is raised to regulate the printed circuit board 5a.

After adjusting the printed circuit board 5a, the X-Y table 2 moves and the mounting head 1 mounts the electronic component onto the printed circuit board 5a. Then, once the attachment is complete, it returns to its original position. These operations are repeated below.

The transport positioning pin 7 of the transport lever A6 has the configuration shown in FIG. It has a relationship of fitting into the positioning hole 3.

Problem to be Solved by the Invention In such a conventional board transfer device, whenever the size of the printed circuit board 5 changes, that is, the position of the positioning hole 3 of the printed board 5 changes, the transfer lever A6 is attached to the tip of the transfer lever A6 each time. There was a drawback in that the position of the conveyance positioning pin 7 had to be adjusted in the vertical direction by loosening the nut 21, and the conveyance lever A6 had to be adjusted in the left-right direction at the attachment part of the connecting guide 8.

The present invention solves the above-mentioned problems. Even if the size and shape of the printed circuit board to be transported differs, and the position of the positioning hole of the printed circuit board changes, the position and stroke of the transport lever can be automatically switched. The purpose is to provide a conveyance device.

Means for Solving the Problems In order to achieve the above object, the present invention provides a mechanism that allows the position of the transport lever, the movement stroke, and the position of the transport guide to be freely changed by an NC program.

Effect The present invention has the above-described structure, and the size of the printed circuit board,
Depending on the change in shape, the position and stroke of the transport lever and the width of the transport guide can be automatically changed using an NC program.

EXAMPLE Hereinafter, a TFL example of the present invention will be described with reference to FIGS. 1 to 5. Note that the same components in this embodiment as those in the conventional example will be described with the same reference numerals. As shown in the figure, the conveyor 4, the X-Y table 2, and the unloading conveyor 14 are arranged in sequence, and the conveyor 4 conveys the printed circuit board A5 to the set position, that is, to the X-Y table 2, and then transfers the printed circuit board A5 to the X-Y table 2. In step 2, components are mounted using the mounting head 1 corresponding to the sent printed circuit board B5a, and the carry-out conveyor 14 carries out the printed circuit board B5a on which the parts have been mounted. The printed circuit board A5 has positioning holes 3 at predetermined positions on both sides. In the transport conveyor 4 section, the printed circuit board A5 is transported by inserting the transport positioning pin 7 of the transport lever A6 into the positioning hole 3 thereof, and is transported by the movement of the transport lever A6, and this transport lever A6 has a nut A22 at the end. , and is fed by the rotation of a ball screw 23 that is screwed into this. The hole screw 23 can be rotated by an AC servo motor 24. X-Y table 2 is the printed circuit board B5 that was sent.
After adjusting by inserting a regulating bottle (not shown) into the positioning hole 3 of a, it moves in the X-Y direction.
The mounting head 1 adjacent to the table 2 is configured to mount electronic components onto the printed circuit board 85a that has been transported to the XY chiffle 2. A nut B25 at the end of the transport lever BIO is screwed into the ball screw A23, and the transport lever BIO is moved by rotation of the ball screw A23. Then, use the transport lever BIO to
-Y The printed circuit board 5a on the chiffle 2 is conveyed. The nut A22 and nut B25 are prevented from rotating and guided by a slide shaft A26 provided on the base A27. The aforementioned AC servo motor A24 is attached to the base A27, and a ball screw A23 is rotatably held therein. Further, a nut B28 is fixed to the base A27, and a hole screw B29 is screwed into the nut B28. This ball screw B29 can be rotated by an AC servo motor B30, and as the ball screw B29 rotates, the nut B28 moves back and forth.
By moving the base A27 to which 28 is fixed back and forth, the transport lever A6 and the transport lever B10 are moved to set positions.

The base A27 is a guide member 3 provided on the base B31.
2, so that the base A27 can smoothly move in the direction of the XY table 2. In addition, this base B31
The above-mentioned AC servo motor B30 is fixed to.

Next, the discharge conveyor 14 will be explained.

A nut C33 is fixed to a guide 20b that is parallel to and forms a pair with the carry-out conveyor 14.

A ball screw C rotated by an AC servo motor C37 is screwed into this nut C33. Therefore, as the ball screw C34 rotates, the nut C
33 moves in the front-back direction, and the setting position of the guide 20b can be made variable depending on the size of the printed circuit board 5a. The AC servo motor C37 is attached to a base C36, and a guide 2 is attached to this base C36.
Slide shaft 35 that guides the rotation and movement of 0b
is installed. The conveyor conveyor 4 also has a guide 20a, has the same structure as the above-mentioned discharge conveyor 14, and is symmetrical. Furthermore, one of the rails 46 provided on the XY table 2 also moves in the same manner as the carry-out conveyor 14, so that the rail width can be adjusted according to the size of the printed circuit board B5a. That is, the AC servo motor D47, the ball screw 48, and the nut 49 constitute a moving structure.

Next, the vertical stroke adjustment of each part of the device will be explained. As shown in FIG. 2, a main body base 44 is arranged below the base 31, and a cylinder A
39 is fixed. The cylinder A39 is the base B
The entire 31 can be moved up and down. The base B31 has a slide shaft C40 projecting downward.
and a guide member 41 provided on the main body base 44.
The base B31 is designed to operate smoothly. Also, the unloading conveyor 14 at the main body base 44
A cylinder B43 is provided at the lower part of the cylinder B43, and the entire base C36 connected to the cylinder B43 can be moved up and down. Further, the same unit for vertical operation is provided in the four portions of the conveyor.

To explain the operation in the above configuration, in the preparation process, depending on the size of the printed circuit board A5 and the position of the positioning hole 3, as shown in FIG.
a and the position of the transport lever A6 in the width direction are set by NC data. When the machining process begins, as shown in FIG. Transfer lever BIO to cylinder A3
9 and cylinder 843 to lower it.

Next, as shown in FIG. 1, the ball screw A23 is rotated by the AC servo motor A24, and the transport positioning pin 7 attached to the tip of the transport lever A6 connected to the nut A22 is moved through the positioning hole of the printed circuit board A5. 3, the printed circuit board A5 is transported to the set position on the X-Y table 2. At the same time, the printed circuit board B5a of the X-Y table 2 is moved by the transport lever BIO as shown in FIG.
are carried out to the carrying-out conveyor 14. Here, the printed circuit board 5 on the conveyor 4 is conveyed onto the X-Y table 2, and the printed circuit board 5a on the X-Y table 2 is conveyed onto the carry-out conveyor 14. The carry-out conveyor 14 is lowered, and in this state, that is, the conveyor 4 and the carry-out conveyor 14 are out of the way, the X-Y table 2 regulates the printed circuit board 5 and moves in the X-Y direction. In this way, the printed circuit board 5 is moved below the mounting head 1 and parts are mounted on the printed circuit board 5. After installing the above parts, X-Y
The table 2 returns to its original position and releases the restriction on the printed circuit board 5. Meanwhile, the transport conveyor 4 and the discharge conveyor 14 also rise to their original positions. Furthermore, when the printed circuit board A5 is transferred to the X-Y table 2 as described above, as shown in FIG. The transport lever 86 and the transport lever BIO are returned to their original positions by the respective nuts A22 and B25 due to the rotation of the ball screw A23. Repeat these steps.

As described above, according to the substrate transfer apparatus of the embodiment of the present invention, the preparation work for processing printed circuit boards of different shapes and sizes, that is, the transfer lever A6 and the guide 20a,
20b, etc. can be automatically aligned.

Effects of the Invention As is clear from the above embodiments, according to the present invention, a transport lever and a transport conveyor for transporting a printed circuit board to a certain position, a guide paired with the transport conveyor, and a an X-Y table used for mounting electronic components on the printed circuit board; an unloading conveyor for unloading the printed circuit board after the electronic components are mounted; and a conveyance guide paired with the unloading conveyor. a drive device such as a servo motor that arbitrarily changes the positioning and stroke of the transport lever and guide depending on the size and shape of the printed circuit board;
Since it is equipped with an NC program for controlling the drive device, the position of the transport lever and the stroke of the guide can be automatically changed even if the size and shape of the printed circuit board to be transported changes.

[Brief explanation of drawings]

FIG. 1 is a plan view of a substrate transfer device according to an embodiment of the present invention, FIG. 2 is a front view of the same, FIG. 3 is a plan view of the substrate transfer device showing the same step, and FIG. 4 is a front view of the same. Fig. 5 is an external perspective view showing the vicinity of the transfer lever that transfers the printed circuit board to a certain position, Fig. 6 is a plan view of the conventional board transfer device, Fig. 7 is a front view of the same, and Fig. 8 is the same. FIG. 9 is a plan view of the board transfer device showing the next step, and an external perspective view showing the vicinity of the transfer lever that transfers the printed circuit board. 2...X-Y table, 55a...Printed circuit board, 4...Transportation conveyor (transportation means), 6...Transportation lever (holding means), 14 ...
... Carrying out conveyor (carrying out means), 20a, 20b.
...Guide (guidance means), 24, 30.37...
...Servo motor (drive means)

Claims (1)

[Claims] A holding means and a transport means for transporting the printed circuit board to a certain position, a guide means paired with the transport means, and a mounting means for moving the printed circuit board in the X-Y direction on a table to mount electronic components. an X-Y table for carrying out the printed circuit board, an unloading means for unloading the printed circuit board after the electronic components have been mounted, and a guide means paired with the unloading means, and according to the size and shape of the printed circuit board, the A substrate transfer apparatus comprising: a drive means for arbitrarily changing the positioning and stroke of the holding means and the guide means; and a control means using an NC program for controlling the drive means.