JP2001050732A - Positioning state detecting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a positioning state detecting device detecting a positioning state stably without restriction from the shape of a product, preventing a position displacement efficiently, and eliminating a manual correction and the like. SOLUTION: A board-engaging recessed part 14a which a board 11 with mounted electronic parts 12 engages is provided on a board-positioning block body 14. A boss part 14c is provided on each corner part of the board-engaging recessed part 14a, and has a flat top surface protruded upward from the bottom surface 14b. A suction opening 20a of a suction passage 20 sucked by a suction device 19 is opened on a center part of the individual boss parts 14c. A pressure sensor 21 detecting a pressure decrease in the suction passage 20 is provided. When the board 11 is engaged with the board-engaging recessed part 14a, and is positioned to a normal position on the individual boss parts 14c while the suction device 19 is under a suction operation, a bottom surface of the board 11 is sucked on a top surface of the individual boss parts 14c, the pressure in the suction passage 20 decreases, and the pressure sensor 21 detects the pressure decrease to report a set completion state of the board 11 to an operator or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for detecting the positioning of various members in equipment that requires positioning in the manufacture and inspection of products.

[0002]

2. Description of the Related Art As shown in FIGS. 3 and 4, for example, various electronic components 1 such as relays and capacitors are provided on an upper surface side.
In a facility in which so-called card edge type connectors 3 are respectively fitted and mounted on both side edges 2a of a rectangular plate-shaped substrate 2 on which the substrate 2 is mounted, the substrate 2 is positioned and mounted at a predetermined position. A board fitting recess 4a is provided on the upper surface side of the board positioning block body 4. The board fitting recess 4a is formed on the upper surface side of the board positioning block body 4 to removably fit the board 2 from above and restricts movement in the front-rear and left-right directions. I have.

A boss 4c is provided at each of the four corners of the board fitting recess 4a, the boss 4c having a flat upper surface protruding above the bottom surface 4b.
The substrate 2 is configured to be positioned and held at a predetermined height from the bottom surface 4b by being placed and supported on the substrate c.

[0004] Further, the board constituting the board fitting recess 4a corresponds to the position of the edge 2a where the connector 3 of the board 2 positioned and mounted in the board fitting recess 4a is fitted. Both sides of the peripheral edge portion of the positioning block 4 are formed into cutouts of a predetermined length, and each constitutes a connector mounting portion 4d on which the elongated connector 3 is positioned and mounted. At this time, the bottom surface 4b of the board fitting recess 4a and the bottom surface of the connector mounting portion 4d are in the same plane.

[0005] Further, corresponding to the outer side of the board positioning block body 4 of the connector 3 positioned and mounted on the connector mounting portion 4d, there are provided push operating bodies 7 which are respectively operated by an air cylinder 6 to be pushed out. The connector 3 is configured to be pushed in the direction of the edge 2a of the substrate 2 by the advancement movement of the operating body 7 and fitted and mounted.

[0006] Further, as shown in FIG.
And a photodetector 8b are arranged at appropriate heights above the board positioning block 4, and mounted on the board 2 fitted and mounted in the board fitting recess 4a. It is configured to detect whether or not the board 2 is positioned and mounted at a predetermined position by detecting whether or not the uppermost end of the structure such as the electronic component 1 is detected.

That is, if the substrate 2 is positioned and mounted at a predetermined position in the substrate fitting recess 4a, the positioning detection sensor 8
Does not detect a structure such as the electronic component 1 or the like. Also, a mis-set state in which the substrate 2 is fitted in the board fitting concave portion 4a in a floating state, heat due to soldering and mounting of the electronic component 1, etc. In the case of the positioning / placement failure state where the substrate 2 is slightly warped (about 0.1 to 0.2 mm) or the like, the structure is placed in the positioning / placement state at the predetermined position in order to detect the structure. It is configured to detect a slightly upper part of the object, and to prevent damage such as breakage of the board 2 and the connector 3 due to the fitting of the connector 3 in the state of the poor positioning and placement, and occurrence of a product failure in the half-fitted state of the connector 3. Effectively prevent.

[0008] Note that the projections 4e are provided at a part of the four corners of the board positioning recess 4a of the board positioning block 4, so that the mounting orientation of the board 2 at the time of fitting can be corrected. It is configured to prevent it effectively.

[0009]

However, according to the above-mentioned conventional method for detecting a positioning and mounting failure state using a transmission sensor system, an appropriate structure having a stable shape on the substrate 2 and a shape capable of clearly judging the quality. When there is no object, there is a problem that the positioning detection sensor 8 cannot effectively detect the object.

[0010] Further, when the positioning and placement failure state in the floating state of the substrate 2 as described above is detected, the correction is relied on manual or pushing down equipment or the like, resulting in additional labor and equipment costs. There was also the disadvantage of bulking.

SUMMARY OF THE INVENTION An object of the present invention is to provide a positioning state detecting device which can stably detect a positioning state without being limited by the shape of a product, effectively prevent a positional deviation, and does not require manual rework. The purpose is to provide.

[0012]

According to another aspect of the present invention, there is provided a positioning state detecting device for detecting whether a mounting member is positioned and mounted at a predetermined position. Is provided with a suction port of a suction path to be suctioned by a suction device, and a pressure sensor for detecting a pressure drop in the suction path is provided corresponding to a mounting portion positioned and mounted in a surface contact state. On the point.

The mounting member may include a substrate on which electronic components are mounted, and the mounting portion may include a plurality of bosses that support a bottom surface of the substrate at a plurality of positions, and a central portion of each boss. The suction port of the suction path may be formed with an opening.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIGS. 1 and 2, reference numeral 11 denotes a rectangular plate-like substrate as an example of a mounting member.
Various electronic components 12 such as a relay and a capacitor are appropriately mounted on the upper surface side. Reference numeral 13 denotes a so-called card edge type elongated connector 13 which is fitted and mounted on both side edge portions 11a of the substrate 11, respectively.
It is.

The equipment for fitting and mounting each connector 13 at the edge 11a of the substrate 11 includes a substrate positioning block 14 for positioning and mounting the substrate 11 at a predetermined position, as in the conventional case. On the upper surface side of the body 14, there is formed a substrate fitting recess 14a into which the substrate 11 is removably fitted from above and restricts movement in the front-rear and left-right directions.

Further, boss portions 14c are provided at four corners of the board fitting concave portion 14a as mounting portions each having a flat upper surface protruding upward from the bottom surface 14b. The substrate 11 is placed and supported on the boss 14c so that the substrate 11 is positioned and held at a predetermined height from the bottom surface 14b.

Further, the board fitting recess 14 corresponds to the position of the edge 11a where the connector 13 of the board 11 positioned and mounted by fitting into the board fitting recess 14a is fitted.
The both sides of the peripheral portion of the board positioning block body 14 that constitutes a are formed to have notches of a predetermined length, and each constitutes a connector mounting portion 14d on which the connector 13 is positioned and mounted. At this time, the bottom surface 1 of the board fitting concave portion 14a is
4b and the bottom surface of the connector mounting portion 14d are in the same plane state. At this time, the U-shaped member constituting the substrate fitting concave portion 14a is
4 shows a structure integrally provided, however, it may be configured as a separate body and detachably mounted.

Further, the board positioning block 14 of the connector 13 positioned and mounted on the connector mounting portion 14d.
A push operation body 17 is provided corresponding to the outer side, and is pushed and retracted by an air cylinder 16 as an example of an actuator, and the connector 13 is pushed toward the substrate 11 by the advance movement of the push operation body 17 to be fitted. It is configured to be attached together.

In this embodiment, in particular, the substrate positioning block 14 is provided with a suction path 20 which is connected to a suction section of a suction device 19 such as a vacuum pump. The suction port 20a of each boss 1
An opening is formed at the center of 4c.

In the middle of the suction path 20, the suction path 20
A pressure sensor 21 such as a diaphragm pressure gauge for detecting a pressure drop in the inside is provided. If a predetermined pressure drop is detected in the suction passage 20 by the pressure sensor 21, a detection signal is output and normal positioning is performed. It is configured to determine the mounted state and notify the worker or the like of the set completion state by turning on a lamp, generating a set completion sound, or the like.

As in the prior art, the projections 14e are provided at a part of the four corners of the board positioning recess 14a of the board positioning block 14, and the board 11 has
It is configured to effectively prevent a wrong mounting direction at the time of fitting mounting.

In this embodiment, the substrate 11 is fitted into the substrate fitting recess 14a and positioned and placed at a regular position on each boss 14c in the suction operation state of the suction device 19 as described above. Then, the lower surface of the substrate 11 is
c, the surface of the substrate 1 is adsorbed, and a pressure drop occurs in the suction passage 20. The pressure sensor 21 detects the pressure drop and
The setting completion state of 1 is notified to an operator or the like. Then, the subsequent fitting and attaching process of the connector 13 is performed.

In this positioning and mounting state, since the substrate 11 is held in a sucked state on each boss portion 14c, the displacement of the substrate 11 can be effectively prevented.

Further, the board fitting recess 14 of the board 11
a) Even when the board 11 is slightly lifted from the boss 14c or when the board 11 is slightly warped at the time of fitting, suction by the suction device 19 through the suction port 20a of each boss 14c. By the action, the substrate 11 is forcibly sucked and sucked, and a force for forcibly positioning and placing the board at the proper position is applied, thereby eliminating the need for manual reworking and the like, eliminating the need for extra manual arrangement and equipment, thereby reducing costs. Can be achieved.

On the other hand, when the substrate 11 is not positioned and mounted at the proper position, that is, when the substrate 11 is in a floating state without contacting the boss portion 14c, the pressure drop in the suction passage 20 is reduced to a predetermined value. , The pressure sensor 21 does not detect a pressure drop and does not notify the set completion state.

As described above, the lower surface of the substrate 11 is
(c) This is a method of detecting the positioning state by detecting whether or not the electronic component 1 is adsorbed on the upper surface by the pressure sensor 21. The positioning state can be detected regardless of the shape of the electronic component 1 mounted on the substrate 11. .

In the above-described embodiment, the case where the substrate 11 is positioned and mounted is shown. However, the present invention is not limited to the substrate 11 and can be similarly applied to the detection of the positioning and mounting in other various products and inspections.

Further, although the structure in which the boss portions 14c as the mounting portions are arranged at four surrounding portions is shown, the number of the mounting portions is not limited to the four surrounding portions, and furthermore, the structure is arranged at the center portion. The number may be increased or decreased as needed.

[0029]

As described above, according to the positioning state detecting device of the present invention, the suction path suctioned by the suction device corresponds to the mounting portion where the mounting member is positioned and mounted in a surface contact state. And a pressure sensor for detecting a pressure drop in the suction path, so that the positioning state can be detected stably without being restricted by the shape of the product, and the position is determined by the suction action. There is an advantage that the displacement can be effectively prevented, manual rework is not required, and the cost can be reduced.

The mounting member is composed of a substrate on which electronic components are mounted, and the mounting portion is composed of a plurality of bosses for pointing the bottom surface of the substrate at a plurality of positions. The structure in which the suction port is formed with an opening has an advantage that even if the substrate is slightly warped, the substrate can be forcibly sucked and positioned and placed at a predetermined position.

[Brief description of the drawings]

FIG. 1 is an explanatory plan view showing an embodiment of the present invention.

FIG. 2 is a sectional front view of the same part.

FIG. 3 is an explanatory plan view showing a conventional example.

FIG. 4 is a sectional front view of the same part.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Substrate 12 Electronic component 13 Connector 14 Substrate positioning block body 14a Substrate fitting recess 14b Bottom surface 14c Boss 16 Air cylinder 17 Push-in operation body 19 Suction device 20 Suction path 20a Suction port 21 Pressure sensor

Claims (2)

[Claims] 1. A positioning state detecting device for detecting whether or not a mounting member is positioned and mounted at a predetermined position, wherein the mounting member corresponds to a mounting portion on which the mounting member is positioned and mounted in a surface contact state. And a suction port for a suction path to be sucked by the suction device, and a pressure sensor for detecting a pressure drop in the suction path. 2. The mounting member includes a substrate on which electronic components are mounted, and the mounting portion includes a plurality of bosses supporting a bottom surface of the substrate at a plurality of positions, and a central portion of each boss. 2. The positioning state detecting device according to claim 1, wherein a suction port of the suction path is formed in the opening.