JPH07206155A - Substrate positioning device - Google Patents

Abstract

PURPOSE:To provide a substrate positioning device capable of easily setting a positioning pin. CONSTITUTION:A pin supporting bracket 12 of a positioning device 10 is fixed on a support table. The pin supporting bracket 12 has an upper support part 12-1 and an lower support part 12-2 projected in a square shape with one side open. A positioning pin 11 is inserted into a pin holding hole 12-3 vertically passing through the upper support part 12-1, and a set pin 11-1 is inserted through a longitudinal groove 12-4. When the positioning pin 11 is twisted in the arrow B direction at a point where the set pin 11-1 makes contact with the bottom part of the longitudinal groove 12-4, the set pin 11-1 revolves in a lateral groove and comes to a set pin hole 12-5. A push rod 12-6 of the lower holding part 12-2 is energized upward through a C ring 12-8 by a spiral spring 12-7 and pushes up the positioning pin 11, and consequently, the set pin 11-1 is made contact with an elliptical inner surface upper part of the set pin hole 12-5 with pressure and the positioning pin 11 is fixed. When it is operated in reverse, it is possible to easily remove the positioning pin 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a substrate positioning device in a component mounting device for mounting electronic components on a substrate.

[0002]

2. Description of the Related Art Conventionally, there is a substrate unit manufacturing line including a printed circuit board supply device, a dispenser, a component mounting device, a reflow furnace and the like. Among these devices, the component mounting device has carrier belts respectively arranged on two carrier rails extending opposite to each other on both sides of the substrate carrier path, and applies solder from an upstream dispenser. A printed circuit board (hereinafter, simply referred to as a board) that has been sent out is carried in, and a large number of chip-shaped electronic components (hereinafter simply referred to as a component) such as ICs, resistors and capacitors are automatically mounted on the substrate, and the printed circuit board is downstream. To the reflow furnace.

By the way, small parts are 1.5
In many cases, many lead wires are implanted at intervals of 0.5 mm in the periphery, even if the size is as small as about 4 mm. As described above, since the shape of the component is minute, in order to accurately mount the component at the correct mounting position on the substrate, the substrate must be stationary at the predetermined position on the transport path in the front, rear, left, and right positions. I won't.

Usually, in order to accurately fix the board in this way, a supporting device for supporting the board to be carried in from below is arranged below the transport rail of the component mounting apparatus. This supporting device is composed of a positioning pin, a backup pin, a backup plate and an elevator.

This will be briefly described with reference to FIGS. 4 (a) and 4 (b). 1A shows a plan view of the supporting device 1 together with a partial plan view of the transport rail 2, and FIG. 1B is a side view of the supporting device 1 as seen from the transport direction, which is a cross-sectional view of the transport rail 2. It shows with. As shown in (a) and (b) of the same figure, when the substrate is not in the processing position, the elevator 4 holding the backup plate 3 is lowered, and the tip of the positioning pin 5 held by the backup plate 3 is transported. It is located below the rail 2.

Then, as shown in FIGS. 5 (a) and 5 (b), when the substrate 6 is carried in and comes into contact with a stopper (not shown) and stops at a general processing position, the elevator 4 is moved by the arrow A in the same figure. The tip of the positioning pin 5 that is lifted in the upward direction shown in FIG.
To fit. As a result, the stationary position of the substrate 6 is fixed. The lower end of the positioning pin 5 is fixed by a screw 8 on the back surface of the backup plate 3. Although not particularly shown, an appropriate number of backup pins selectively inserted into a large number of pin holes of the backup plate 3 shown in FIG. 4 support the substrate 6 from below the substrate 6. ing.

[0007]

By the way, there are many kinds of substrates, and the outer diameter of the positioning pin is often different depending on the kind of the substrate. On the other hand, because of the type of components to be mounted or the design of the board, positioning of the board is performed by other methods such as outer shape positioning (generally complicated processing and time is required), and the positioning pin is unnecessary. There are some. For this reason, the positioning pins must be replaced every time the type of substrate changes. As described above, the positioning pin is screw 8 on the back surface of the backup plate 3.
Since the fixing pin is fixed by, the replacement of the positioning pin requires an operation such as removing the backup plate. For this reason, the replacement work of the positioning pins is very troublesome and time-consuming. Therefore, this is also a factor that hinders improvement in overall work efficiency.

An object of the present invention is to provide a substrate positioning device which can easily install positioning pins.

[0009]

The structure of the substrate positioning apparatus according to the present invention will be described below. INDUSTRIAL APPLICABILITY The present invention is applied to a board positioning device that fits into a predetermined fitting hole of a board carried into the apparatus and determines the stationary position of the board.

First, in the board positioning device according to the first aspect of the invention, a positioning pin having a locking member for engaging the other end with a predetermined fitting hole of the board at its tip end,
A pin support bracket that holds the positioning pin detachably and has an engaging portion that engages with a locking member of the positioning pin, and the pin support bracket that is disposed on the pin support bracket and is held by the pin support bracket. And a pressing member that presses the positioning pin from below to fix the locking member of the positioning pin to the engaging portion of the pin support bracket.

Next, a board positioning device according to a second aspect of the present invention comprises a positioning pin that fits into a predetermined fitting hole of the board and a pin support bracket that detachably holds the positioning pin. The positioning pin has a stop pin mounted at right angles to the axis, while the pin support bracket has an upper support part and a lower support part projecting laterally at the upper and lower parts of the bracket body, respectively. .

In the upper support portion, a pin holding hole penetrating vertically through the upper support portion, and an opening from an inner surface of the pin holding hole to a side surface of the upper support portion from an upper portion to a central portion of the pin holding hole. Vertical groove, and a lateral groove that allows the stop pin, which is inserted into the vertical groove and abuts the bottom of the vertical groove when the positioning pin is inserted into the pin holding hole from above, to rotate in the horizontal direction, and the horizontal groove. And a hollow portion provided at the terminal end of the stop pin in the rotation direction and into which the stop pin is fitted.

Further, the lower support portion has a push rod vertically penetrating the lower support portion, a spiral spring coaxially arranged outside the push rod, and coaxially with a peripheral surface of the push rod. It comprises a C-ring or an O-ring which is pressed against the provided groove and transmits the pressing biasing force of the spiral spring to the pressing rod.

The positioning pin is inserted into the pin holding hole, the stop pin is inserted into the vertical groove, abuts against the bottom of the vertical groove, and rotates the horizontal groove. When the hollow pin is reached and the external force of insertion and rotation with respect to the positioning pin is removed, the push pin is pushed up by the urging force of the spiral spring so that the stop pin fits on the upper part of the inner surface of the cavity. Is fixed in the pin holding hole, whereby the positioning pin is fixedly held in the pin support bracket.

[0015]

According to the present invention, the positioning pin is inserted into the pin holding hole, the stop pin is inserted into the vertical groove, abuts on the bottom of the vertical groove to rotate the horizontal groove, and the hollow portion is provided at the end of the rotation direction. When the force reaches and the external force of the insertion and rotation is removed, the push pin is pushed up by the urging force of the spiral spring to fit the stop pin into the upper part of the inner surface of the cavity and fix it in the pin holding hole. It is fixedly held on the pin support bracket.

As a result, the positioning device can detachably fix and hold any positioning pin.

[0017]

Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a perspective view of a positioning device according to an embodiment. As shown in FIG.
Reference numeral 0 includes a positioning pin 11 and a pin support bracket 12 that holds the positioning pin 11 in a detachable manner. A stop pin 11-1 is attached to the positioning pin 11 slightly below the center of the shaft and at a right angle to the shaft.
Further, the top end of the positioning pin 11 is formed in a conical shape, and a notch is provided so that the tip of the minus driver can be inserted from the top of the conical shape to the middle side of the conical shape.

On the other hand, the pin support bracket 12 includes an upper support portion 12-1 protruding upward and downward from the bracket body,
And the lower support portion 12-2 forms a U-shape.
A pin holding hole 12-which vertically penetrates the upper support 12-1.
3 is provided. A vertical groove 12-4 opening from the inner surface of the pin holding hole 12-3 to the side surface of the upper support portion 12-1 is formed from the upper portion of the pin holding hole 12-3 to about the central portion. The positioning pin 1 is placed in the pin holding hole 12-3.
When 1 is inserted from above, the stop pin 11-1 of the positioning pin 11 is inserted into the vertical groove 12-4. At the same position as the bottom portion of the vertical groove 12-4, a stop pin hole 12-5 having an elliptical cross section vertically penetrates from the inner surface of the pin holding hole 12-3 to the front surface of the upper support portion 12-1. This stop pin hole 1
A lateral groove opening from the inner surface of 2-5 to the side surface of the upper support portion 12-1 is formed from the tip of the stop pin hole 12-5 to the root, and the lateral groove communicates with the bottom of the vertical groove 12-4 at this root. There is.

The positioning pin 11 has a pin holding hole 12-
3 is inserted into the vertical groove 1
2-4, when it is pushed down together with the positioning pin 11 and the stop pin 11-1 comes into contact with the bottom of the vertical groove 12-4, the positioning pin 11 is directly or by using a flat-blade screwdriver. When it is twisted (rotated) in the downward counterclockwise direction indicated by arrow B, the stop pin 11-1 rotates in the lateral groove and reaches the stop pin hole 12-5 and stops.

An upper end of a push rod 12-6 which vertically penetrates the lower holding portion 12-2 is inserted in a lower portion of the pin holding hole 12-3. A spiral spring 12-7 is arranged on the outer side of the push rod 12-6 coaxially therewith. The spiral spring 12-7 includes a C ring (or O ring) 12-8 and a lower holding portion 12 which are also attached to the outside of the push rod 12-6.
-2 between them and having a pushing biasing force, the C ring 12-
The push rod 12-6 is urged upwards via 8. By this urging force, the push rod 12-6 moves the pin holding hole 12-3.
It comes into contact with the bottom of the positioning pin 11 which is inserted into, and always biases the positioning pin 11 upward.

Therefore, the elliptical retaining pin hole 12-
The stop pin 11-1 rotated to 5 is urged upward together with the positioning pin 11 when the external force is removed, and the stop pin hole 1
It is pressed against the upper part of the inner surface of the oval 2-5. by this,
The stop pin 11-1 is fixed, and therefore the pin holding hole 1
The positioning pin 11 inserted into 2-3 is fixed.

As described above, the positioning pin 11 can be attached to the pin support bracket 12 by an extremely easy operation of inserting the positioning pin 11 into the pin holding hole 12-3 and twisting it. Also, this positioning pin 11
When removing from the pin support bracket 12, it can be easily removed by reversing the above operation. Therefore, the replacement of the positioning pin can be processed in an extremely short time.

In the above arrangement, the positioning device 10
The pin support bracket 12 is previously fixed to one corner of the backup table that supports the substrate. FIG. 2 shows a front view of the positioning device 10 attached to one corner of the backup table. The whole view of the substrate transport path is seen from the side, and the transport rails and the like are omitted.
The transfer direction of the substrate 21 is from left to right as indicated by arrow C in the figure. The backup table 22 is connected to an elevator (not shown) and can move up and down as shown by an arrow D in the figure.

A stopper device is arranged in front of the board 21 to be carried in. This stopper device is a stopper 2 that abuts on the front surface of the substrate 21 to stop the substrate 21.
4. A stopper bracket 25 having the stopper 24 fixed to the upper end, a cylinder piston 26 having the stopper bracket 25 fixed to the upper end, and a pneumatic cylinder 27 for moving the cylinder piston 26 up and down. A rail 28 extending vertically is attached to the stopper bracket 25.

The positioning device 10 is attached to a corner of the backup table 22 near the stopper device. A slide nut 13 is fixedly attached to the pin support bracket 12 of the positioning device 10, and the slide nut 13 is slidably fitted on the rail 28 of the stopper bracket 25.

Next, the operation of the positioning device 10 configured as described above will be described again with reference to FIG. In FIG. 2, as described above, the substrate 21 is conveyed from the left to the right as indicated by the arrow C in the figure. First, the backup table 22 is lowered below the position shown in the figure when the substrate 21 is loaded. Prior to the loading of the substrate 21, the stopper 24 of the stopper device, which is arranged in front of the substrate 21 to be loaded in the traveling direction, has previously risen from the lower position to the position shown in the figure and stopped.

Subsequently, the above-mentioned loaded substrate 21 is loaded.
, But stops at the position indicated by the broken line 21a in the figure by contacting the stopper 24. Then, the positioning device 10 ascends together with the backup table 22, the tips of the positioning pins 11 enter into the positioning holes 21-1 of the board 21 and are fitted therein, and fix the board 21 at a predetermined stationary position 21a.

Then, when the component mounting process is completed, the positioning device 10 descends together with the backup table 22, the stopper 24 descends to open the path of the substrate 21, and the substrate 21 is carried out to the right.

In the above embodiment, the pin support bracket 12 is formed in a U shape, and the biasing force of the spiral spring 12-7 is applied to the C ring (or O ring) 12-8 and the push rod 1.
Although the positioning pin 11 is fixed by transmitting it to the positioning pin 11 via 2-6, the structure for urging and fixing the positioning pin 11 from below is not limited to this, and another structure may be used. Can be fixed as well. This will be described below as another embodiment.

FIG. 3 (a) is a perspective view of a positioning device according to another embodiment, and FIG. 3 (b) is a positioning pin 1 thereof.
It is an expanded sectional view of the composition which urges 1 from below and fixes.
In the figure, the same components as those in FIG. 1 are designated by the same reference numerals. As shown in FIG. 3A, the pin support bracket 12 'has a flat plate shape, and one end thereof has a pin holding hole 12'-3 which vertically penetrates and holds the positioning pin 11.
Is provided. Above the pin holding hole 12'-3,
As in the case of the previous embodiment, the vertical groove 12-4, the horizontal groove, and the stop pin hole 12-5 are formed. Below the pin holding hole 12'-3, the pushing member 1 shown in FIG.
2'-6 is inserted by screwing. The pushing member 12'-6 comprises a pushing pin 12'-6-1, a plunger 12'-6-2 and a spring 12'-6-3. The plunger 12'-6-2 is provided with a screw thread on the cylindrical outer peripheral surface to be screwed onto the inner surface of the pin support bracket 12 ', and inside the plunger 12'-6-2, a push pin 12'-6-is provided at an opening at the center of the upper surface. 1 is movably held, and a spring 12 'is provided between the bottom of the lower surface and the push pin 12'-6-1.
-6-3 is stored. As a result, the push pin 12'-
6-1 is urged upward by a spring 12'-6-3, and the urging force urges the positioning pin 11 upward.

It should be noted that the plunger 12'-6-2 is not screwed into the pin support bracket 12 ', that is, the thread is not arranged on the outer peripheral surface of the cylinder, but is simply inserted into the pin support bracket 12'. If a lid is provided at the lower end of the pin holding hole 12'-3 and the plunger 12'-6-2 is supported by this lid, the same effect as described above can be obtained.

[0032]

As described above in detail, according to the present invention, the positioning pin can be easily attached and fixed to the backup plate only by inserting the positioning pin into the pin holding hole of the pin support bracket and twisting the pin. It is also possible to remove it by operating it in reverse.
Therefore, the positioning pin can be replaced in an extremely short time, which improves the overall work efficiency.

[Brief description of drawings]

FIG. 1 is a perspective view of a positioning device according to an embodiment.

FIG. 2 is a front view of a positioning device attached to a backup table.

FIG. 3A is a perspective view of a positioning device according to another embodiment, and FIG. 3B is an enlarged cross-sectional view of a structure for urging and fixing the positioning pin from below.

4A is a view showing a plan view of a conventional supporting device together with a partial plan view of a transport rail, and FIG. 4B is a side view of the support device seen from the transport direction.

5 (a) and 5 (b) are views explaining the positioning of the loading substrate by the positioning pins of the supporting device of FIG.

[Explanation of symbols]

 10 Positioning Device 11 Positioning Pin 11-1 Stop Pin 12, 12 'Pin Support Bracket 12-1 Upper Support 12-2 Lower Support 12-3, 12'-3 Pin Holding Hole 12-4 Vertical Groove 12-5 Stop Pin hole 12-6, 12'-6 Push rod 12'-6-1 Push pin 12'-2-6 Plunger 12'-6-3 Spring 12-7 Spiral spring 12-8 C-ring (or O-ring) 13 Slide Nut 21 Board 22 Backup Table 24 Stopper 25 Stopper Bracket 26 Cylinder Piston 27 Pneumatic Cylinder 28 Rail

Claims (2)

[Claims] 1. A board positioning device for fitting a board into a predetermined fitting hole of a board to determine a stationary position of the board, wherein a tip portion is fitted into a predetermined fitting hole of the board. A positioning pin having a locking member for locking to another member, and a pin support bracket having an engaging portion that holds the positioning pin detachably and engages with the locking member of the positioning pin. A pressing member that is disposed on the pin support bracket and that presses the positioning pin held by the pin support bracket from below to fix the locking member of the positioning pin to the engaging portion of the pin support bracket. A substrate positioning device having. 2. A board positioning device that fits into a predetermined fitting hole of a board carried into the apparatus to determine a stationary position of the board, and a positioning pin fitted into the predetermined fitting hole of the board. A pin support bracket for holding the positioning pin in a detachable manner, the positioning pin having a stop pin mounted at a right angle to the axis, and the pin support bracket being laterally arranged in the upper and lower portions of the bracket body. Each of which has an upper support portion and a lower support portion that protrude to form a U shape, and the upper support portion has a pin holding hole that vertically penetrates the upper support portion, and an upper portion of the pin holding hole. A vertical groove that opens from the inner surface of the pin holding hole to the side surface of the upper support portion up to the center, and when the positioning pin is inserted into the pin holding hole from above, the vertical groove is inserted into the vertical groove and at the bottom of the vertical groove. The stop pin that abuts A horizontal groove that can rotate in the horizontal direction; and a cavity that is provided at the terminal end of the horizontal groove in the rotation direction of the stop pin and into which the stop pin fits. A penetrating push rod, a spiral spring coaxially arranged outside the push rod, and a groove provided coaxially on the peripheral surface of the push rod, and the pressing force of the spiral spring is applied to the push rod. The positioning pin is inserted into the pin holding hole, the stop pin is inserted into the vertical groove, and abuts the bottom of the vertical groove to rotate the horizontal groove. When the hollow portion provided at the end of the rotation direction is reached and the external force of insertion and rotation with respect to the positioning pin is removed, the push pin is pushed up by the urging force of the spiral spring so that the stop pin is released. It fits in the upper part of the inner surface of the cavity and is fixed in the pin holding hole. Board positioning device comprising this by the positioning pin is held fixed to the pin support bracket.