JP2758957B2 - Automatic support pin changing device for printed circuit board support device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an automatic support pin changing device for a printed board supporting device in a component mounter.

[Related Art] Conventionally, in a component mounter, when a model is switched, a work of replacing and exchanging a support pin on a backup plate has occurred. At this time, replacement and preparation were manually performed by an operator. In the above,
Switching models refers to changing the type of printed circuit board on which components are mounted, backup plate refers to a support board with holes in a grid pattern, and support pins refers to pins that support the printed circuit board. Means

FIG. 11 shows an outline of a conventional substrate holding mechanism. In FIG. 11, 1 is a backup plate, 2 is a support pin, 3 is an XY table, and 6 is a lifting cylinder.

The operation of the configuration of the prior art shown in FIG. 11 will be described below.

A hole is formed in the backup plate 1 like a base, and a support pin 2 is manually inserted into the hole depending on the state of the back surface of the printed circuit board. The backup plate 1 is lifted by the cylinder 6 to support the printed circuit board. Further, the backup plate 1 is moved up and down by the cylinder 6, and the difference due to the thickness of the substrate is performed by selecting the support pins 2 having different heights by the operator.

[Problems to be Solved by the Invention] However, today, when mounting speed is improved and high-mix low-volume production is performed, a problem occurs in that manual replacement causes a loss time every time a model is switched, and also increases the amount of work performed by an operator. have. Further, since the type of the support pin is determined by the operator, there is a problem that the substrate is destroyed due to a selection error and the mounting accuracy is reduced.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a support pin automatic replacement device for a printed circuit board support device that automatically replaces support pins in order to solve the above-mentioned problems of the related art.

Another object of the present invention is to provide a support pin automatic replacement device for a printed circuit board supporting device, which can automatically replace support pins and unify the types of support pins into one type.

In addition, another object of the present invention is to provide an automatic support pin changing device of a printed circuit board supporting device, which has a function of automatically changing support pins and correcting a hole position of a backup plate by a recognition device. .

Still another object of the present invention is to provide an automatic support pin changing device for a printed circuit board supporting device, which has a function of automatically changing support pins and automatically generating a support pin insertion pattern.

[Means for Solving the Problems] In order to achieve the above object, the present invention has the following constitution. That is, the present invention provides a printed circuit board component mounter, a support pin for supporting a printed circuit board, a backup plate for inserting the support pin, an elevating device for lifting the backup plate, and an XY for moving the backup plate back and forth and right and left. Table and
A printed circuit board support device including a chuck for attaching and detaching the support pins, wherein XY table positioning data, relative position data between a head at a position where components are mounted and the chuck, and the head and the backup plate. Compare the relative position data with the open reference hole, remove unnecessary support pins using the chuck,
An automatic support pin changing device for a printed circuit board supporting device, comprising: means for mounting the support pins at necessary places.

In the configuration of the present invention described above, it is preferable to include a means for keeping the height of the support pin constant and a means for adjusting the height of the backup plate using the thickness data of the substrate.

Further, in the configuration of the present invention described above, a recognition device for recognizing a hole opened in the support pin and the backup plate, and a means for correcting a mounting / removing position of the support pin using recognition data obtained from the recognition device. It is preferable to provide

In the configuration of the present invention described above, the mounting pattern of the mounting surface of the printed circuit board, the mounting pattern of the back surface of the printed circuit board, and the hole position of the backup plate are combined to automatically create support pin insertion position data. It is preferable to provide

[Operation] According to the configuration of the present invention described above, the XY table positioning data, the relative position data between the head at the position where the component is mounted and the chuck, and the reference hole opened in the head and the backup plate. Comparing relative position data, using the chuck to remove unnecessary support pins, and providing means for attaching the support pins to required locations, so model switching for automatically replacing support pins Time loss can be minimized, and the amount of work of the operator can be reduced.

Further, according to a preferred aspect of the present invention, the support pins are automatically adjusted by providing a means for fixing the height of the support pins and a means for adjusting the height of the backup plate using the thickness data of the substrate. And the height of the backup plate is adjusted, minimizing loss time when switching models, reducing the amount of work required by operators, and unifying support pins into one type. Prevention of board destruction and deterioration of mounting accuracy due to selection errors and setup errors are eliminated, and the need to select support pins during automatic replacement is eliminated.

In addition, according to a preferred aspect of the present invention, a recognition device for recognizing a hole opened in the support pin and the backup plate, and a detachment position of the support pin is corrected using recognition data obtained from the recognition device. With the means, the support pins are automatically replaced, and the recognition / removal position of the support pins is corrected by the recognition device, so it is possible to shorten the processing and assembly adjustment time of the backup plate and to simplify the support pin insertion position data. become.

Furthermore, according to a preferred aspect of the present invention, the mounting pattern on the mounting surface of the printed circuit board, the mounting pattern on the back surface of the printed circuit board, and the hole position of the backup plate are combined,
Support pins are automatically replaced by the means for automatically creating support pin insertion position data, and support pin insertion position data is created automatically, making it easy to achieve the optimal condition for board support It can be.

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

Embodiment 1 FIG. 1 is an overall view of an automatic replacement method of a printed circuit board support mechanism according to a first embodiment of the present invention.

In the figure, 1 is a backup plate, 2 is a support pin, 3 is an XY table, 4 is a mounting head, 5 is a chuck for replacing a support pin, and 6 is a cylinder for lifting and lowering the backup plate.

FIG. 2 is a principle diagram of the present embodiment, and FIG. 3 is a flowchart of the present embodiment. The operation will be described below with reference to FIGS. 2 and 3.

In the mounting machine, the relative position data (d _x , d _{y in} FIG. 2) between the mounting head and the reference hole 8 of the backup rate is set in advance.
And relative position data (D _x , D _{y in} FIG. 2) between the mounting head and the support pin replacement chuck. This is data centering on the mounting head.

The movement of the XY table uses the data format of the conventional component mounting as it is. Conventionally, at the time of component mounting, relative position data between a mounting head and a reference pin and coordinate values from the reference pin are used for moving the XY table.

The operation will be described with reference to the flowchart of FIG.
First, in step 1, the support pin insertion pattern before replacement is compared with the current insertion pattern. In step 2, if they match, the process ends, and if they do not match, step 3 is executed.
In steps 3 to 6, as shown in the schematic view of the backup plate in FIG. 4, the previous pin is present, and from the position (X ₁ , Y ₁ ) that is not required this time, the previous pin does not exist and is required this time. Move the pin to the correct position (X ₂ , Y ₂ ). That is, d _x
• Using d _y , D _X , D _Y , X coordinate: − (X ₁ + Y ₁ ) + D _X Y coordinate: − (Y ₁ + d _y ) + D _{Y at} the same position as the conventional component mounting When the table is positioned, the support pin moves to the position of the replacement chuck. Then, the pin is pulled out by the chuck, and the pin is similarly moved to (X ₂ , Y ₂ ). That, X-coordinate _{:-( X 2 + d x) +} D X Y coordinate _{:-( Y 2 + d y) +} D performs positioning to the position of the _Y, inserting the pins pulled earlier. This repetition is repeated until the pin insertion patterns match.

As described above, according to the present embodiment, automatic replacement of the support pins can be easily realized by utilizing the conventional positioning of the XY table.

Embodiment 2 FIG. 5 is an overall view of an automatic replacement method of a printed circuit board supporting device according to a second embodiment of the present invention.

In the figure, the same parts as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. 1 differs from FIG. 1 in that a motor 7 for adjusting the height of the backup plate is provided in place of the cylinder 6 for raising and lowering the backup plate.

FIG. 6 is a principle diagram of the present embodiment. This figure shows only parts different from the first embodiment. Therefore, the description of the same parts as those in the first embodiment will be omitted. Hereinafter, the operation will be described with reference to FIG.

The thickness data of the printed circuit board is input to the mounting machine in advance.

In FIG. 6, reference numeral 9 denotes a printed board, and reference numeral 10 denotes retaining of the board. H _L is the lower limit of the backup plate, H _S is the position of the backup plate when supporting the substrate, h
Represents the distance from the lower limit of the backup plate to the upper surface of the substrate (the lower surface of the retaining plate of the substrate), h represents the height of the support pins, and d represents the thickness of the substrate. Since h and H are constant values, when the substrate thickness is d, the amount of rise of the backup plate is H _S −H _L = H−h−d, and is uniquely determined by the value of d.

In addition, the thickness of the board can be measured with a sensor etc. when it is on the conveyor, so the height can be automatically adjusted. It is possible to respond in real time.

As described above, according to this embodiment, in addition to the effects obtained in the first embodiment, the support pins can be unified into one type, pin selection mistakes and setup mistakes can be prevented, and the pins can be automatically replaced. This also has the effect of eliminating the need for selection.

Third Embodiment FIG. 7 is an overall view of an automatic replacement method of a printed circuit board supporting device according to a third embodiment of the present invention.

In the figure, the same parts as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. In the figure, the point different from FIG. 1 is that a camera 11 for recognizing holes and support pins on a backup plate is added.

FIG. 8 is a principle diagram of the present embodiment. In the figure, the description of the parts overlapping with the first embodiment is omitted. Hereinafter, the operation will be described with reference to FIG.

Before proceeding to the flow chart shown in FIG. 3 of the first embodiment, the position of the reference hole 8 is corrected. The XY table is positioned so that the reference hole can be positioned on the optical axis of the recognition camera 11, and the hole position is recognized. The deviation of the resulting X _a · Y _a by recognition results, x _1, y ₁ in Figure 3,
Pull than the value of x _2, y _2, to position used in place of _{x 1, y 1, x 2} , y 2. Now, assuming that the relative positions of the holes of the backup plate are X 'and Y', respectively, the respective hole positions can be indicated by simple coordinates. Figure 9 is a diagram showing the correspondence of the numerical coordinate system and simplified coordinate system from the reference hole, can be represented by _{X 1 = a 1 * X '} Y 1 = b 1 * Y'. Positioning point to pull the pin in Figure 3 this means that the X-coordinate _{:-( a 1 * X '+ d} x) + D x Y coordinate _{:-( b 2 * Y' + d} y) + D y.

As described above, according to the present embodiment, in addition to the effects obtained in the first embodiment, since the position can be corrected, it is possible to reduce the processing and assembly adjustment time of the backup plate and to simplify the support pin insertion position data. Even when the backup plate is replaced, if only the relative positions of the holes in the backup plate are the same, the replacement can be performed without correcting the data.

Fourth Embodiment FIG. 10 is a principle diagram of an automatic replacement method of a printed circuit board supporting device according to a fourth embodiment of the present invention. This figure shows only the parts added to the first embodiment. Therefore, the description of the same parts as those in the first embodiment will be omitted. Hereinafter, the operation will be described with reference to FIG.

In FIG. 9, pattern 1 shows the mounting pattern on the back surface of the mounting board, and pattern 2 shows the position where the support pins can be inserted. Get an insertable position. At this time, by knowing the information obtained from the pattern 1 from the position data of the component, the insertion prohibition position of the support pin can be treated as surface data instead of point data. Next, a pattern 3, a pattern 4 which is a mounting pattern on the surface, and an overlapping pattern 5 are obtained. Here, ○ in the figure is the insertion position of the support pin,
● indicates the insertion position but the insertion is prohibited. Therefore, the pattern 6 is added and corrected by adding a position where the insertion is prohibited and a position adjacent to the prohibited position of ●. Automatic replacement of the support pins is performed using the insertion pattern of the pattern 6.

As described above, according to the present embodiment, in addition to the effects obtained in the first embodiment, by performing this series of operations in the control device, the support pin insertion position data is automatically generated. There is also an effect that an optimum state can be easily realized.

[Effects of the Invention] As described above, according to the present invention, automatic replacement of the support pins can be easily realized by using the conventional positioning of the XY table, and loss time when switching models is minimized. It is possible to achieve a special effect that it is possible to reduce the amount of work and setup errors of the operator. Also, continuous operation for 24 hours by connecting to a host computer can be easily realized.

Further, according to a preferred embodiment of the present invention, by utilizing the conventional positioning of the XY table, it becomes possible to easily realize automatic replacement of the support pins,
Since the support pins can be unified into one type, it is possible to prevent the substrate from being broken or the mounting accuracy from being deteriorated due to a selection error or a setup error, and it is not necessary to select the support pins during automatic replacement. In addition, since the height of the backup plate is managed by numerical values, the amount of work for machine adjustment can be reduced.

Further, according to another preferred embodiment of the present invention, the conventional
By using the positioning of the XY table, it is possible to easily realize automatic replacement of the support pins, and since the position can be corrected, the time for processing and assembly adjustment of the backup plate can be shortened, and the support pin insertion position data can be simplified. Even when the backup plate is replaced, if only the relative positions of the holes in the backup plate are the same, the replacement can be performed without correcting the data.

Finally, according to another preferred embodiment of the present invention, the conventional
By using the positioning of the XY table, it is possible to easily realize automatic replacement of the support pins, and by processing the insertion pattern of the support pins from the already input data in the control device,
Since the insertion position data of the support pins is automatically created, an optimal state for supporting the substrate is easily realized.

[Brief description of the drawings]

FIG. 1 is an overall view of an embodiment of the first invention, FIG. 2 is a principle diagram thereof, FIG. 3 is a flowchart thereof, FIG. 4 is a schematic view of the backup plate, and FIG. FIG. 6 is an overall view of the embodiment, FIG.
FIG. 8 is a schematic diagram of the same principle, FIG. 9 is a conceptual diagram of the same simplified coordinates, FIG. 10 is a schematic diagram of the fourth embodiment of the invention, and FIG. It is an example of a support mechanism. 1 ... backup plate, 2 ... support pin, 3
... XY table, 4 ... Mounting head, 5 ... Chuck for pin exchange, 6 ... Cylinder for elevating, 7 ... Height adjusting device, 8 ... Reference hole for backup plate, 9 ... Printed circuit board, 10 …… board retention, 11 …… a camera for recognition.

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

Claims (4)

(57) [Claims] In a printed circuit board component mounter, a support pin for supporting a printed circuit board, a backup plate for inserting the support pin, an elevating device for lifting the backup plate, and an XY for moving the backup plate back and forth and right and left. A table, a printed circuit board support device including a chuck for attaching and detaching the support pin, XY table positioning data, relative position data of the head and the chuck at the position where components are mounted, the head and the Comparing relative position data with a reference hole opened in the backup plate, using the chuck to remove unnecessary support pins, and mounting the support pins at necessary locations. Automatic support pin changer for printed circuit board support device. 2. A means for keeping the height of the support pin constant;
2. The apparatus according to claim 1, further comprising means for adjusting the height of the backup plate using the thickness data of the substrate. 3. A recognition device for recognizing a hole opened in a support pin and a backup plate, and means for correcting a mounting / removing position of the support pin using recognition data obtained from the recognition device. An automatic support pin changing device for the printed circuit board supporting device described in the above. 4. A mounting pattern on a mounting surface of a printed circuit board,
2. The automatic support pin changing device for a printed circuit board supporting device according to claim 1, further comprising means for synthesizing a mounting pattern on the back surface of the printed circuit board and a hole position of the backup plate to automatically create support pin insertion position data.