JP2789761B2 - Automatic insertion of electronic components - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to automatically assembling various electronic components with lead wires into a component mounting board such as a printed board using insertion guide pins to form a predetermined electric circuit. The present invention relates to a method for automatically inserting an electronic component using an insertion guide pin.

2. Description of the Related Art Conventionally, in order to automatically incorporate various electronic components with lead wires into a component mounting board such as a printed circuit board to form a predetermined electric circuit, a predetermined component insertion hole provided in a printed circuit board or the like is required. 2. Description of the Related Art An automatic electronic component insertion device that automatically performs an operation of inserting a lead wire of a predetermined electronic component using an insertion guide pin is used.

FIG. 3 is a flowchart showing the insertion operation of the conventional electronic component automatic insertion device, FIG. 4 is a diagram showing a positioning correction method using visual recognition of the conventional electronic component automatic insertion device, and FIG. FIG. 9 is a diagram illustrating a method of visually aligning an insertion guide pin of an electronic component insertion device using a conventional insertion guide pin with a printed circuit board. 4 to 5, reference numeral 7 denotes an insertion guide pin, 8 denotes an insertion head,
11 is a printed circuit board, 21 is a recognition camera, 22 is a light source for hole recognition, 23 is a visual recognition device, 24 is a monitor display, 25 is an electronic component inserted into the printed circuit board 11, and 27 is a printed circuit board 11 Parts insertion holes, 28 are parts insertion holes
A mirror for confirming the positional relationship between 27 and the insertion guide pin 7 is shown by an operator's eyes 29 for confirming the positional relationship between the component insertion hole 27 and the insertion guide pin 7.

In the electronic component automatic insertion device configured as described above, as a series of operations for automatically inserting the electronic component 25 into the printed board 11, first, an insertion guide used to hold and insert the lead wire of the electronic component. The printed circuit board 11 is positioned based on predetermined NC data so that the pin 7 can pass through a predetermined component insertion hole 27, and a predetermined electronic component 25 to be mounted on the printed circuit board 11 (usually a tape). Supply and take out), insert the lead wire into the predetermined component insertion hole 27 on the printed circuit board 11 using the insertion guide pin 7, cut off the extra lead of the lead wire, and insert it into each hole. Check that the insertion has been performed securely, and clinch the lead wires to prevent the electronic components 25 mounted on the printed circuit board 11 from dropping off the printed circuit board 11 to complete a series of insertion operations. (Figure 3).

The printed circuit boards 11 used here have dimensional errors due to processing accuracy, expansion and contraction due to temperature and humidity, etc. for each sheet, and if it is necessary to absorb this difference, the individual printed circuit boards 11 The visual recognition device 23 for measuring and confirming the position of the component insertion hole 27 has been used.

Problems to be Solved by the Invention However, in such an electronic component automatic insertion device, since the recognition camera 21 for component insertion hole recognition is placed near the insertion head 8, it is difficult to perform recognition at the time of insertion. First, the component insertion hole 27 to be recognized is
The printed board 11 is moved so as to enter the field of view (FIG. 4a), and then the printed board 11 is moved again so that the component insertion hole 27 comes to the place of the insertion head 8 (FIG. 4b). ), The movement of the printed circuit board 11 takes a lot of time, and the insertion operation becomes slow.

The position of the insertion guide pin 7 is not fixed and does not change, but is caused by bending of the insertion guide pin 7 itself, play between the guide pin guide 6 and the insertion guide pin 7, wear of the guide pin guide 6 and the insertion guide pin 7 itself, and the like. Since it is constantly changing, though slightly, it is not possible to perfectly align the insertion guide pin 7 with the component insertion hole 27 only by recognizing the position of the component insertion hole 27.

In the alignment work between the insertion guide pin 7 and the component insertion hole 27, which occurs when the insertion guide pin 7 which is a consumable is replaced, etc., the insertion guide pin 7 is blocked by the printed circuit board 11, and its position is Hard to understand and difficult to work.

There was such a problem.

Conventionally, the recognition camera 21
And the insertion head 8 as close as possible, using a material which is hard to wear for the insertion guide pin 7 and the guide pin guide 6, and as shown in FIG. In the positioning with the mirror 27, the operator has to work with the mirror 28 visually.
However, these methods eliminate the increase in the component insertion time due to the addition of the recognition operation, perform the component insertion operation stably even when the position of the insertion guide pin 7 changes,
It has not been possible to shorten the machine stoppage time by replacing the insertion guide pin 7.

In view of such a problem, the present invention speeds up the insertion operation with recognition in the electronic component insertion device, automatically corrects the position of the printed circuit board with respect to the change of the insertion guide pin, and stably inserts components for a long time. An object of the present invention is to provide a method for guaranteeing the operation and automating or omitting the positioning operation when replacing the insertion guide pin.

Means for Solving the Problems In order to solve this problem, in the automatic electronic component insertion method of the present invention, a recognition camera for photographing a component insertion hole and an insertion guide pin of a substrate, and a recognition camera are mounted. A movable recognition camera table, a light source for illuminating a component insertion hole and a guide pin, a visual recognition device connected to the recognition camera for processing image information included in an image from the recognition camera, a table unit, and a head Control unit that controls the operation of the unit, guide pins, recognition camera / table, etc., and performs the insertion of electronic components on one board and at the same time recognizes the component insertion hole on the other board, and corresponds to the insertion guide pin. The position of each component insertion hole can be automatically adjusted.

Operation The operation in this method is as follows.

In the method for automatically inserting an electronic component according to the present invention, when inserting the electronic component into the board, the image of the insertion guide pin is captured by a recognition camera, and the position is measured by a visual recognition device, and the visual recognition device or the control is performed. If the table unit is capable of mounting two boards of the same component arrangement in parallel on the table unit, the two boards are mounted and the distance between the insertion head unit and the recognition camera is set to two. When it is impossible to mount two substrates, the distance between the substrates is the same, and only one substrate is mounted on the table, the recognition camera is placed near the insertion head, and the lead wires for the electronic components are mounted on the substrate. Prior to insertion, the image of the component insertion hole is captured by a recognition camera, the position is measured by a visual recognition device, stored by the visual recognition device or the control unit, and when two substrates are mounted, two substrates are used. Same location At the same time as inserting electronic components into one board into the component insertion holes, the component insertion holes on the other board are recognized, and when one board is mounted, recognition and insertion of the component insertion holes are performed sequentially. By correcting the position of the table unit so as to minimize the amount of error between the positions of the plurality of guide pins used when inserting one component and the positions of the corresponding component insertion holes, The parts can be inserted at a high speed while automatically performing the positioning.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an automatic insertion device for electronic components according to an embodiment of the present invention.

In FIG. 1, 1 is a recognition camera, 2 is a visual recognition device, 3 is a light source for component insertion hole recognition, 4 is a monitor display, 5 is a control unit of the electronic component insertion device, 7 is an insertion guide pin, 8 Is an insertion head, 9 is a table section on which printed boards 10 and 11 can be placed and movable in a plane, 10 and
11 is a printed circuit board, and 12 is a table for a recognition camera.

In the electronic component automatic insertion device configured as described above, the operation for inserting the electronic component into the printed circuit board is as follows.

As shown in FIG. 1, first, when two printed boards 10 and 11 having the same component arrangement can be mounted in parallel on the table 9, the printed board is placed on the table 9. Two 10 and 11 are mounted as shown in the figure.

Next, the table for the recognition camera is moved to the position 1 'so that the insertion guide pin 7 can be captured in the field of view of the recognition camera 1.
12, the table unit 9 is moved so that the printed circuit board 11 does not block between the recognition camera 1 'and the insertion guide pin 7, and the recognition camera 1' captures an image of the insertion guide pin 7 to perform visual recognition. The position of the insertion guide pin 7 is recognized and measured by the device 2, and the result is stored.

When inserting the lead wires of the individual electronic components into the printed circuit board, the recognition camera table 12 is moved so that the distance between the recognition camera 1 and the insertion guide pins 7 is equal to the distance between the printed circuit boards 10 and 11, and the printing is performed. At the same time as the operation of inserting the electronic component into the board 11, an image of the component insertion hole on the printed board 10 is captured by the recognition camera 1, and the position is recognized and measured by the visual recognition device 2.

At this time, from the information of the position of the insertion guide pin 7 measured before and the information of the position of the component insertion hole of the printed circuit board 11 measured before the insertion, a plurality of insertions used when inserting the electronic component is determined. The position of the table 9 is corrected so that the error between the position of the guide pin 7 and the position of each corresponding component insertion hole is minimized. Then, the electronic components are inserted, and the insertion of all the electronic components is completed, thereby completing a series of automatic assembling of the electronic components.

When the size of the printed circuit board is large and only one printed circuit board can be mounted on the table 9, the recognition camera 1 is positioned near the insertion head 8 (an intermediate position between 1 and 1 '). The recognition camera / table 12 is moved, and the table unit 9 is first moved so that the component insertion hole enters the field of view of the recognition camera 1, and recognition and measurement of the component insertion hole are performed. It is also possible to perform the insertion by moving the table section 9 so that the holes match the insertion guide pins. In this case, an extra time is required for the insertion operation because the table unit 9 involves moving the component insertion hole to the position of the recognition camera 1, but the position information of the table unit 9 is determined by the position information of the insertion guide pin 7. It is possible to correct the position and perform accurate positioning.

In the above embodiment, the insertion guide pin 7 and the component insertion hole of the printed circuit board are recognized. However, the component insertion hole of the printed circuit board is inserted by a character or a mark arranged on the printed circuit board. A method of recognizing holes may be used. This can be dealt with by printing characters and marks in advance when manufacturing the printed circuit board.

Effect of the Invention As described above, the present invention places a printed circuit board on a table section, moves a recognition camera using a recognition camera table, recognizes and measures the position of an insertion guide pin, and attaches the printed circuit board to one of the printed circuit boards. Recognition and measurement of the component insertion hole position on the other printed circuit board at the same time as the electronic component insertion operation eliminates the increase in the insertion operation time due to the component insertion hole position recognition operation. , The position of the printed circuit board can be corrected.

[Brief description of the drawings]

FIG. 1 is a block diagram of an electronic component inserting apparatus according to one embodiment of the present invention, FIG. 2 is a flowchart showing an electronic component inserting method according to one embodiment of the present invention, and FIG. 4A and 4B are explanatory views showing a method of positioning correction using visual recognition of a conventional automatic insertion device for electronic components,
FIG. 1 is an explanatory view showing a method of visually aligning an insertion guide pin of an electronic component insertion device using a conventional insertion guide pin with a printed circuit board. 1 ... recognition camera, 2 ... visual recognition device, 3 ... light source,
4 Monitor display 5 Control unit 7
Insertion guide pin, 8 ... Insertion head, 9 ... Table part, 10 ... Printed circuit board (component insertion hole recognition position), 11 ...
... Printed circuit board (component insertion position), 12 ... Table for recognition camera.

────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Takayuki Fujita 1006 Kazuma, Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (58) Field surveyed (Int.Cl. ⁶ , DB name) H05K 13/04

Claims (2)

(57) [Claims] 1. A table part capable of holding a plurality of substrates having component insertion holes for inserting lead wires of an electronic component and moving in a plane, an insertion head for inserting the lead wires into the substrate, When inserting a component into the board, the lead wire is guided into the component insertion hole while penetrating through the component insertion hole from the side opposite to the component mounting surface of the board and holding the component with the insertion head. A plurality of guide pins, a recognition camera for photographing the component insertion holes and the guide pins of the board, a recognition camera table on which the recognition camera is mounted and movable, and a component insertion hole and the guide of the board; A light source for illuminating a pin; a visual recognition device connected to the recognition camera for processing image information included in an image from the recognition camera; and the table unit and the head unit The guide pin the recognition camera
A control unit for controlling the operation of a table or the like is provided. When inserting the electronic component into the board, first, an image of the guide pin is captured by the recognition camera, and the position is measured by the visual recognition device, and the visual recognition is performed. The recognition unit or the control unit stores the information. Then, when the table unit can mount two boards having the same component arrangement in parallel on the table unit, the two are mounted and the insertion head unit and the recognition camera are mounted. When the mounting of the two substrates is not possible, only one of the substrates is mounted on the table and the recognition camera is positioned near the insertion head when the mounting of the two substrates is impossible. Prior to the insertion of the lead wire of the electronic component into the board, the image of the component insertion hole is captured by the recognition camera, the position is measured by the visual recognition device, and stored by the visual recognition device or the control unit. When the two substrates are mounted, the electronic components are inserted into the first substrate into the component insertion holes at the same positions of the two substrates, and the components of the second substrate are simultaneously inserted. Recognition of the insertion hole, when one board is mounted, recognition and insertion of the component insertion hole are sequentially executed, and the positions of a plurality of guide pins used when inserting one component are correlated with each other. Wherein the position of the table is corrected so as to minimize the amount of error between the position of each of the component insertion holes and the component is inserted. 2. The electronic recognition device according to claim 1, wherein the visual recognition device reads information such as characters or marks arranged on the substrate and controls whether electronic components are mounted on the substrate based on the information. How to insert parts automatically.