JP4919737B2 - Board inspection equipment - Google Patents

Description

  The present invention relates to a circuit board inspection apparatus for inspecting electrical continuity of electronic circuit boards, performance of mounted components, erroneous mounting, and the like, and more particularly to a circuit board inspection apparatus for improving work performance and work safety. It is.

Prior to mounting an electronic circuit board on an electronic device or the like, it is a common practice to inspect the electrical characteristics of the electronic circuit board, the performance of mounted components, incorrect mounting, and the like. For such inspection, an electronic circuit board inspection apparatus as disclosed in Patent Document 1 below is used.
In the electronic circuit board inspection apparatus, a press stand as a pressing means is positioned above a set box for setting the electronic circuit board. Therefore, when setting and removing the electronic circuit board, a narrow space between the press stand and the set box has to be used, which has a problem that the work cannot be efficiently performed.

Further, when the electronic circuit board is set and removed using the narrow space between the press stand and the set box, there is a possibility that the operator's hand touches the inspection pin or the like to get injured.
In addition, the electronic circuit board inspection device is not a mass-produced product, but is a small-scale work manufactured individually for each electronic circuit board to be inspected, so that the structure is simplified as much as possible, and the reliability is improved. There is a need to reduce production costs.

Japanese Patent Laid-Open No. 11-311658

When the problems to be solved by the present invention are arranged based on the above-mentioned background technology and the problems that the background technology has, the work efficiency that the worker has been working on has been reviewed to improve the work efficiency and safety is improved. Is to provide a comfortable working environment.
The present invention has been made based on such points, the purpose of which is to facilitate the inspection work of the electronic circuit board, improve the work efficiency by reducing the labor required for the work, An object of the present invention is to provide a substrate inspection apparatus that is safe, simple in structure, and low in cost.

In order to achieve the above object, a substrate inspection apparatus according to claim 1 of the present invention is configured such that an inspection pin is pressed against an inspection contact of an electronic circuit board with a predetermined pressure contact force so that an electrical characteristic of the electronic circuit board and a mounted component are obtained. Inspection pin unit that enables inspection of performance, mounting error, etc., pressing means for pressing the inspection pin against the inspection contact with a predetermined pressure contact force, a set position where the electronic circuit board is set, and the electronic A movable stage that moves between an inspection position for performing a predetermined inspection on the circuit board, and a pull-in that moves the movable stage from the set position toward the inspection position mechanically interlocked with the pushing operation of the pressing means. comprising means, and the test pin unit installed in or integral separately to the pressing means or the movable stage, the retraction means is above It comprises a pushing plate provided on the pressing means side and a driven plate that contacts the end of the pushing plate, and provided with an inclined guide surface on at least one of the pushing plate and the driven plate. By moving the plate by a predetermined stroke, the pressure contact of the inspection pin with respect to the inspection contact and the retracting operation toward the inspection position of the movable stage can be performed in association with each other, and the above-mentioned inspection pin unit is placed at a predetermined position. The electronic circuit board is set, and in this state, the movable stage is moved from the set position toward the inspection position via the retracting means by the pushing operation of the pressing means. .
The substrate inspection apparatus according to claim 2 is provided with return means for returning the movable stage moved to the inspection position side to the set position side for setting the electronic circuit board in the substrate inspection apparatus according to claim 1 . It is characterized by.

Therefore, according to the board inspection apparatus of the present invention, by pressing the inspection pin against the inspection contact of the electronic circuit board with a predetermined pressure contact force, the electrical characteristics of the electronic circuit board, the performance of the mounted component, the erroneous mounting, etc. An inspection pin unit that enables inspection, a pressing means for pressing the inspection pin against the inspection contact with a predetermined pressure contact force, a set position where the electronic circuit board is set, and a predetermined inspection on the electronic circuit board A movable stage that moves between the inspection position to be applied, and a retracting means that moves the movable stage from the set position toward the inspection position mechanically interlocked with the pushing operation of the pressing means, The inspection pin unit is installed separately or integrally with the pressing means or the movable stage, and a predetermined amount is provided with respect to the inspection pin unit. Since the electronic circuit board is set in a position and the movable stage is moved from the set position toward the inspection position via the retracting means by the pushing operation of the pushing means in that state, the inspection pin unit The other configuration of the electronic circuit board inspection apparatus can be used as it is regardless of the type of the electronic circuit board, thereby reducing the production cost of the electronic circuit board inspection apparatus. It can be kept low. In addition, when the electronic circuit board is set or removed by providing a movable stage that moves in the front-rear direction, the movable stage can be pulled out to the front, and when inspecting the electronic circuit board, the electronic circuit board is placed on the back side. The work safety is improved because the work can be performed in the state of being moved to. Moreover, since the movable stage can be moved to the back side at the same time by performing the pushing operation of the pushing means by employing the pulling means, labor saving is also achieved.
The retracting means includes a pushing plate provided on the pressing means side and a driven plate that comes into contact with an end of the pushing plate, and is inclined to at least one of the pushing plate and the driven plate. When a guide surface is provided and the push plate is moved downward by a predetermined stroke so that the contact of the inspection pin against the inspection contact and the retracting operation toward the inspection position of the movable stage can be performed in association with each other. This makes it possible to provide a retracting means that is relatively simple and can be installed in a narrow installation space.
In addition, when a return means is provided to return the movable stage moved to the inspection position side to the set position side where the electronic circuit board is set, the movable stage located on the back inspection position side is set to the front set position. The operation for moving to the side becomes unnecessary, and the work efficiency is further improved.

Hereinafter, the substrate inspection of the present invention will be described together with the configuration of the substrate inspection apparatus 1 of the present invention and the inspection procedure of the electronic circuit board performed using the substrate inspection apparatus 1 taking the embodiment shown in FIGS. 1 to 5 as an example. The operation mode of the device 1 will be specifically described.
The substrate inspection apparatus 1 according to the present invention includes an inspection apparatus main body 7 including a base 3 and a cover 5. In the inspection apparatus main body 7, the inspection pin unit 11 for substantially inspecting the electronic circuit board 9 and the inspection contacts 13, 13, 13... The pressing means 17 for pressing with a predetermined pressure contact force, the inspection pin unit 11 is set, the movable stage 19 that moves in the front-rear direction A, and the pressing operation of the pressing means 17 are interlocked with the above-described operation. A pull-in means 23 for moving the movable stage 19 toward the inspection position 21 on the back side is basically provided.

Further, in the present embodiment, there is provided return means 27 for returning the movable stage 19 moved to the inspection position 21 side to the set position 25 side where the electronic circuit board 9 is set.
The electronic circuit board 9 is formed of a synthetic resin or the like, and an insulating layer 29 positioned on a surface on which a mounting component 31 such as an IC, an LSI, a resistor, a coil, a capacitor, and an LED is mounted, and a back surface side of the insulating layer 29 This is a plate-like electronic component called a printed wiring board or the like that is composed of a conductive layer 33 formed with a circuit pattern that is stacked on and formed with a circuit pattern that connects the mounting components 31.
The conductive layer 33 is provided with a large number of inspection contacts 13, 13, 13... And the voltage between the inspection contacts 13, 13, 13. A check is performed.

The inspection pin unit 11 presses the inspection pins 15, 15, 15... Against the inspection contacts 13, 13, 13... Of the electronic circuit board 9 with a predetermined pressure contact force. This unit directly performs inspections such as electrical continuity, performance of the mounted component 31, and erroneous mounting.
Specifically, a set box 35 for setting the electronic circuit board 9 provided on the movable stage 19 side and in which a large number of inspection pins 15, 15, 15... The inspection pin unit 11 is configured by including a pressing plate 39 provided on the side and provided with a plurality of pressing pins 37, 37, 37... Facing downward.

The set box 35 is a relatively flat square box-like member, and the upper surface 41 is provided with the above-described multiple inspection pins 15, 15, 15... And sets the position where the electronic circuit board 9 is set. A guide post 47 for receiving the set pin 43 and the guide pin 45 provided on the lower surface of the pressing plate 39 is provided.
The inspection pins 15, 15, 15... Are extendable pins incorporating a spring (not shown), and a lead wire 51 is connected to a terminal 49 provided at the lower end thereof. The lead wire 51 is pulled out of the set box 35 through an opening formed in, for example, a side plate of the set box 35, and is connected to a measuring device or a mounting device (not shown).

The pressing plate 39 is a rectangular flat plate member that is slightly larger than the electronic circuit board 9 and is used by being attached to the lower surface of the pressing base 53 that is a constituent member of the pressing means 17 described later. The plurality of pressing pins 37, 37, 37... For pressing the upper surface of the electronic circuit board 9 and the guide pins 45 are provided on the lower surface of the pressing plate 39 so as to extend in the vertical direction.
The inspection pin unit 11 configured as described above is individually manufactured corresponding to the electronic circuit board 9 to be inspected. When the electronic circuit board 9 is switched, the inspection pin unit 11 is provided in a separate inspection pin unit 11 corresponding to the electronic circuit board 9. Exchanged.

  The pressing means 17 is attached to a swing shaft 55 that is horizontally stretched between the left and right side plates of the inspection apparatus body 7 and one end portion of the swing shaft 55 that projects outward from the inspection apparatus body 7. An operating handle 57, and a swing arm 59 which is provided at an intermediate position of the swing shaft 55 and swings over a range of about 90 ° around the swing shaft 55 integrally with the swing shaft 55. A pressure roller 61 provided on the free end side of the swing arm 59 so as to be freely rotatable, and a pressure base 53 that is in contact with the pressure roller 61 and moves downward under the pressure from the pressure roller 61. , And a vertical guide mechanism 63 that guides the vertical movement of the pressing base 53.

The swing shaft 55 is a round bar-like member, and is supported by a plurality of bearing members 65, 65, 65, 65 attached to the top plate portion of the inspection apparatus body 7 so as to be swingable.
The pressing base 53 is a rectangular flat plate member having a large rectangular notch 67 formed on the front surface. A total of four shaft holders 69 are provided on the side of the rear corner of the pressing base 53 and the rear corner of the notch 67 near the front corner. The pressing plate 39 is attached to the lower surface of the pressing base 53 as described above with the pressing pin 37 side down.

Further, on the lower surface of the rear portion of the pressing base 53, a pressing plate 71 is provided one by one using the left and right side spaces in the inspection apparatus main body 7 which does not interfere with the setting and inspection of the electronic circuit board 9. The pushing plate 71 is a rectangular flat plate member as an example, and moves like a linear motion cam in combination with a driven plate 73 described later.
The pushing plate 71 is a constituent member of the retracting means 23 together with a driven plate 73 described later.

The movable stage 19 is configured by a rectangular flat plate-like slide table 75 that is approximately the same size as the pressing base 53 and a slider 77 that is attached to the left and right lower surfaces as an example of the slide table 75. The slider 77 engages with two guide rails 79, 79 extending in the front-rear direction A laid on the upper surface of the base 3 of the inspection apparatus body 7, so that the guide rails 79, 79 are smoothly moved forward and backward. It can be slid.
Further, on the upper surface of the rear part of the slide table 75, a driven plate 73 is provided one by one using the left and right side spaces in the inspection apparatus body 7 which does not interfere with the setting and inspection of the electronic circuit board 9.

  The follower plate 73 is a flat plate-like member having a trapezoidal shape as viewed from the side, in which the upper surface is a guide surface 81 that is inclined forward and inclined. The driven plate 73 constitutes the retracting means 23 as described above together with the pushing plate 71, and the contact position with the driven plate 73 is gradually changed by moving the pushing plate 71 downward by a predetermined stroke. It is possible to simultaneously perform the setting of the pressure contact force of the inspection pins 15, 15, 15... With respect to the inspection contacts 13, 13, 13... And the retracting operation of the movable stage 19 toward the inspection position 21. Yes.

The return means 27 is constituted by a compression coil spring 85 that acts on the back surface 83 of the driven plate 73. Therefore, the movable stage 19 receives an urging force that is constantly moving toward the set position 25 from the compression coil spring 85, and the movable stage 19 automatically moves forward when the operator releases his / her hand from the operation handle 57. To return to the set position 25.
In addition, four guide shafts 87 fitted to the shaft holder 69 are vertically raised between the top plate portion of the inspection apparatus body 7 and the base 3. The guide shaft 87 and the shaft holder 69 constitute a vertical guide mechanism 63 for moving the pressing base 53 up and down while maintaining a horizontal posture from the pressing base 53.
A compression coil spring 89 is provided between the lower surface of the shaft holder 69 and the upper surface of the base 3 so as to fit around the guide shaft 87. The compression coil spring 89 has a function of pushing up the pressing base 53 pushed down by operating the operation handle 57 so as to automatically return to the original position.

Next, the operation mode of the electronic circuit board inspection apparatus 1 of the present invention will be described together with the inspection procedure of the electronic circuit board 9.
The operator sets the electronic circuit board 9 on the set box 35 with the conductive layer 33 facing down and the set pins 43. In this state, the inspection contacts 13, 13, 13... Are merely touched lightly by the inspection pins 15, 15, 15.
Next, the operator holds the operation handle 57 and tilts the operation handle 57 forward, for example, to rotate the swing shaft 55 by a predetermined angle. As the swing shaft 55 rotates, the swing arm 59 starts swinging, and the pressing base 53 is pushed downward by a predetermined stroke set by the rotation angle of the swing shaft 55 and the working length of the swing arm 59. .

When the pressing base 53 moves downward, the pushing plate 71 attached to the pressing base 53 also moves downward. Then, due to the inclination of the guide surface 81 of the driven plate 73 that is in contact with the pushing plate 71, the driven plate 73, the movable stage 19 and the inspection pin unit 11 are integrally moved toward the inspection position 21 on the back side. To do. When the inspection pin unit 11 reaches the inspection position 21 as shown in FIG. 3, the movement of the driven plate 73, the movable stage 19, and the inspection pin unit 11 stops.
As the pressing base 53 moves downward, the pressing plate 39 attached to the pressing base 53 also moves downward, and a plurality of pressing pins 37 attached to the lower surface of the pressing plate 39. , 37, 37... Abut on the upper surface of the electronic circuit board 9 and push the electronic circuit board 9 downward.

The inspection pins 15, 15, 15... Are brought into pressure contact with the inspection contacts 13, 13, 13... By a pressing force from the pressing pins 37, 37, 37. A predetermined inspection of the electronic circuit board 9 is performed.
When the operator removes his / her hand from the operation handle 57 after the inspection is completed, the movable stage 19, the inspection pin unit 11 and the driven plate 73 automatically start moving forward by the biasing force of the compression coil spring 85. When the pin unit 11 reaches the set position 25 shown in FIG. 4, the movement is stopped.

The pressing base 53 is moved upward by the forward movement of the follower plate 73 and the upward biasing force of the compression coil spring 89, and the pressing roller 61 is pushed upward to swing the swing arm 59 to the original position. Move.
Then, the electronic circuit board 9 that has been inspected is removed from the set box 35, a new electronic circuit board 9 to be inspected next is set on the set box 35, and the inspection is then started in accordance with the above procedure.
As described above, in the present invention, the test pin unit 11 is moved from the set position 25 to the test position 21 and the test pins 15 with respect to the test contacts 13, 13, 13. Since the setting of the pressure contact force of 15, 15... Is executed at the same time, a safe and efficient inspection of the electronic circuit board 9 is executed.

The present invention is not limited to the embodiment described above. For example, the rotation of the oscillating shaft 55 can be configured not only to be manually performed using the operation handle 57 but also to be automatically rotated using a motor. It is also possible to reverse the configuration of the push plate 71 and the driven plate 73 so as to form the guide surface 81 in a forward downward inclined posture on the push plate 71 side.
Further, the inclination angle and shape of the guide surface 81 can be variously changed, and in addition to being inclined linearly, the inclination angle may be changed curvedly while being curved in a convex shape or a concave shape.

The retracting means 23 may be configured to incorporate other mechanisms such as a link mechanism and a rack and pinion mechanism in addition to a structure imitating a linear cam formed by the pushing plate 71 and the driven plate 73. is there.
Further, the retracting means 23 can be provided in both of the left and right side spaces of the inspection apparatus main body 7 and can be provided only in any one of them. It is also possible to provide it at the site.
In addition to providing only one set of the pressing roller 61 and the swing arm 59, it is also possible to provide a plurality of sets. In this case, not only the intermediate portion of the swing shaft 55 but also the right and left are swingably distributed in a balanced manner. It is possible to arrange the arm 59 and the pressing roller 61.

  INDUSTRIAL APPLICABILITY The present invention can be used in the manufacture and use fields of board inspection devices that inspect the electrical continuity of electronic circuit boards, the performance of mounted components, incorrect mounting, etc., and in particular, the improvement of work efficiency and the improvement of work safety. It has applicability when you want to plan.

It is a figure which shows embodiment of this invention, and is a front view which shows a board | substrate inspection apparatus. It is a figure which shows embodiment of this invention and is II-II sectional drawing in FIG. 1 which shows a board | substrate inspection apparatus. It is a figure which shows embodiment of this invention, and is a sectional side view at the time of the inspection which shows a board | substrate inspection apparatus. It is a figure which shows embodiment of this invention, and is a sectional side view at the time of the set which shows a board | substrate inspection apparatus. It is a figure which shows embodiment of this invention, and is a vertical front view which shows a test | inspection pin unit.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Board | substrate inspection apparatus 3 Base 5 Cover 7 Inspection apparatus main body 9 Electronic circuit board 11 Inspection pin unit 13 Inspection contact 15 Inspection pin 17 Pressing means 19 Movable stage 21 Inspection position 23 Retraction means 25 Set position 27 Return means 29 Insulating layer 31 Mounting Parts 33 Conductive layer 35 Set box 37 Press pin 39 Press plate 41 Upper surface 43 Set pin 45 Guide pin 47 Guide post 49 Terminal 51 Lead wire 53 Press base 55 Oscillating shaft 57 Operation handle 59 Oscillating arm 61 Pressing roller 63 Vertical guide mechanism 65 Bearing member 67 Notch 69 Shaft holder 71 Push plate 73 Drive plate 75 Slide table 77 Slider 79 Guide rail 81 Guide surface 83 Back surface 85 Compression coil spring 87 Guide shaft 89 Compression coil spring A A longitudinal direction

Claims (2)

An inspection pin unit that enables inspection of the electrical characteristics of the electronic circuit board, the performance of the mounted component, erroneous mounting, etc. by pressing the inspection pin against the inspection contact of the electronic circuit board with a predetermined pressure contact force,
A pressing means for pressing the inspection pin against the inspection contact with a predetermined pressure contact force;
A movable stage that moves between a set position where the electronic circuit board is set and an inspection position for performing a predetermined inspection on the electronic circuit board;
Retraction means for moving the movable stage from the set position toward the inspection position mechanically interlocked with the pushing operation of the pressing means;
The inspection pin unit is installed separately or integrally with the pressing means or the movable stage,
The retracting means includes a pushing plate provided on the pressing means side and a driven plate that contacts the end of the pushing plate, and an inclined guide surface is provided on at least one of the pushing plate and the driven plate. By moving the push plate by a predetermined stroke, the pressure contact of the inspection pin with respect to the inspection contact and the retraction operation toward the inspection position of the movable stage can be performed in association with each other,
The electronic circuit board is set at a predetermined position with respect to the inspection pin unit, and in this state, the movable stage is moved from the set position toward the inspection position via the retracting means by the pushing operation of the pressing means. A substrate inspection apparatus characterized by being made to perform. The board inspection apparatus according to claim 1,
A substrate inspection apparatus, comprising a return means for returning the movable stage moved to the inspection position side to a set position side for setting an electronic circuit board .

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