JPH0437200A - Automatic adjustment inspection device for wiring board - Google Patents

Abstract

PURPOSE:To ensure high accuracy adjustment and inspection of a wiring board by miniaturizing the whole structure and providing universality by detouchably mounting a fixture unit on one of a pair of unit supporting frames which approaches and is separated away by driving means and mounting an adjustment driver unit on the other while detouchably mounting a board conveyance unit. CONSTITUTION:There are disposed on a device body 2 a pair of fixture unit supporting frames 30 and adjustment driver unit supporting frames 40, both being allowed to approach and separated away by air cylinders 10, 20, and there are detouchably mounted on the fixture unit supporting frame 30a fixture unit 50 having a plurality of contact pins each serving to interface an electric signal to a printed board A and an adjustment driver unit 60 having a plurality of drivers 61 each serving to adjust an adjustment element B of the printed board A is detouchably mount on the adjustment driver unit supporting frame 40. Further, a board conveyance mechanism 70 is provided between the unit supporting frames 30, 40, and a pair of board conveyance units for carrying in and out the units A are detouchably mounted on the board conveyance mechanism 70.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention is applicable to, for example, a VTR (video tape recorder).
Variable resistors for printed circuit boards (wiring boards) used in
The present invention relates to an automatic adjustment and inspection device for wiring boards used when adjusting and inspecting adjustment elements such as capacitors.

[Summary of the Invention] This invention provides an automatic adjustment inspection device for wiring boards, in which a pair of unit support frames are disposed in the device main body by driving means to move vertically toward and away from each other, and one of the unit support frames A fixture unit having a plurality of contact pins for inputting and outputting electrical signals to and from a wiring board is removably attached to one side, and an adjustment driver having a plurality of drivers for adjusting adjustment elements of the wiring board to the other unit support frame. The unit is detachably attached, and a board transport mechanism is provided between a pair of unit support frames of the apparatus main body to transport the wiring board, and the board transport unit transports the wiring board into and out of the board transport mechanism. By detachably attaching the unit to the device body, each unit can be easily and quickly attached to and removed from the device body, and continuous adjustment and inspection of wiring boards and line organization can be easily performed. It is something.

[Prior Art] For example, a variable resistor on a printed circuit board (wiring board) used in a VTR (video tape recorder).

2. Description of the Related Art Automatic adjustment and inspection devices for adjusting and inspecting adjustment elements such as capacitors are known. To explain this in detail with reference to FIG. 13, reference numeral 100 is an automatic adjustment inspection device for wiring boards, which includes a fixture unit 102 connected to the lower side of the device main body 101, and a fixture unit 102 connected to the lower side of the device main body 101, and the fixture unit 102 connected to the lower side of the device main body 101, and It has an adjustment driver unit 103 that moves up and down with respect to the unit 102.

The lower part of the device main body 101 serves as a pedestal. In addition, the device main body 101 also includes signals for the VTR, such as a white signal, a color bar signal, and a dropout detection signal.
A signal generator that generates various input signals necessary for adjustment and inspection of the printed circuit board A, and a DC voltage that outputs multiple signals (analog signals) for each adjustment and inspection item from the printed circuit board A during inspection etc. It has various circuit blocks (none of which are shown) such as a plurality of detectors for converting into .

Further, the fixture unit 102 is biased upward by the elastic force of the coil spring 104, and the pallet support frame 105 on which the printed circuit board A is placed via the pallet C
A board 106 is provided below this pallet support frame 105. On this board 106, a plurality of contact pins 107 for supplying input signals necessary for adjusting and inspecting the printed circuit board A, and a reference pin 108 for determining the position of the printed circuit board A are provided upright.

Further, the adjustment driver unit 103 has an L-shaped support frame 110 equipped with a plurality of drivers 109 for adjusting adjustment elements B such as variable resistors and capacitors on the printed circuit board A. A plurality of board presser rods 111 are protruded from the lower side of the support frame 110, and the rods 111 of the air cylinder 112 are attached to the upper side of the support frame 110.
13, and the support frame 110 having an L-shape can be moved below the pallet support frame 105 side of the fixture unit 102.

When the automatic adjustment inspection device 100 performs the first adjustment inspection of the adjustment element B of the printed circuit board A used in a VTR, the pallet C on which the printed circuit board A is mounted is placed on the pallet support frame 105 of the fixture unit 102. By setting the adjustment driver unit 103 and lowering it by retracting the rod 113 of the air cylinder 112, the pallet support frame 105 is lowered against the biasing force of the coil spring 104. As a result, the printed circuit board A is pressed between the contact pins 107 of the fixture unit 102 and the board holding rod 111 of the adjustment driver unit 103, and
．． Adjustment and inspection of the adjustment element B are automatically performed via the contact pins 107 and the like.

[Problems to be Solved by the Invention] However, in the conventional wiring board automatic adjustment device 100, only the adjustment driver unit 103 is moved up and down, so the stroke of the rod 113 of the air cylinder 112 becomes long, and the length of the rod 113 becomes long. This requires the use of a large air cylinder 112, which has the drawback of increasing the size of the entire device.

In addition, the presser bar 111 of the adjustment driver unit 103
Hold printed circuit board A with
It takes time to bring the contact pins 107 into contact with the printed circuit board A, and since the pallet C and the pallet support frame 105 are interposed between the contact pins 107 and the presser bar 111, the contact pins 107 can be brought into contact with the printed circuit board A with precision. I couldn't let it go.

Furthermore, the fixture unit 102. The alignment driver unit 103 is fixed to the main body 101 side with bolts and nuts, so when adjusting and inspecting printed circuit boards A of different sizes, it takes time to switch to a unit suitable for each printed circuit board. When transporting the automatic adjustment inspection apparatus 100 to another location, since the lower part of the apparatus main body 101 is a pedestal, the transport work is difficult and transportation costs are high.

SUMMARY OF THE INVENTION Therefore, the present invention provides an automatic adjustment/inspection device for wiring boards that can be made more compact and versatile by attaching and detaching each unit to the main body of the device, and is capable of highly accurate adjustment and inspection. .

[Means for solving the problem] A pair of unit support frames are provided in the main body of the device by driving means to move vertically toward each other and move away from each other, and one of the unit support frames inputs and outputs electrical signals to the wiring board. A fixture unit having a plurality of contact pins for adjusting the adjustment elements of the wiring board is removably attached to the other unit support frame, and an adjustment driver unit having a plurality of drivers for adjusting the adjustment elements of the wiring board is removably attached to the other unit support frame. A board transport mechanism for transporting the wiring board is provided between the pair of unit support frames of the apparatus main body, and a board transport unit for loading and unloading the wiring board into and out of the board transport mechanism is detachably attached to the apparatus main body. Installation.

[Operation] The fixture unit and the adjustment driver unit are brought close to each other by the driving means provided in the apparatus main body. As a result, the contact pins of the fixture unit and the driver of the adjustment driver unit come into precise contact with the wiring board in a short time by sandwiching the wiring board, the adjustment elements of the wiring board are adjusted by the driver, and the wiring board is inspected by the contact pins. be done. Furthermore, the wiring boards are continuously carried in and out of the apparatus body by a transfer board unit attached to the apparatus body, thereby making it possible to form a line.

[Embodiment] In FIG. 12, which describes an embodiment of the present invention in detail with reference to the drawings, reference numeral 1 denotes an automatic adjustment inspection device for wiring boards. This automatic adjustment inspection device 1 automatically adjusts adjustment elements B such as variable resistors, capacitors, trimmers, etc. on a printed circuit board (wiring board) A to be adjusted and inspected, used for example in a video tape recorder (VTR), It is something to be inspected. The device main body 2 of this automatic adjustment inspection device 1 includes a pair of fixture unit support frames 3 that are moved vertically to approach and separate by air cylinders (driving means) 10 and 20.
0 and an adjustment driver unit support frame 40 are arranged. A fixture unit 50 has a plurality of contact pins 51 on the fixture unit support frame 30 for inputting and outputting electrical signals to the printed circuit board A.
At the same time, an adjustment driver unit 60 having a plurality of drivers 61 for adjusting adjustment elements B of the printed circuit board A is removably attached to the adjustment driver unit support frame 40. Further, a board transport mechanism 70 for transporting the printed circuit board A is provided between the pair of unit support frames 30 and 40 of the apparatus main body 2, and the printed circuit board A is carried into and out of the board transport mechanism 70. A pair of substrate transport units 80 and 80 are each removably attached to the apparatus main body 2.

To explain in detail, the device main body 2 includes a base plate 3,
A pair of hinges 4, 4 are provided at the rear upper part of this base plate 3.
The unit support plate 5 is supported so as to be tiltable at 90 degrees to the rear through the unit support plate 5, which stands perpendicular to the base plate 3, and the unit support plate 5 is fixed to the front side of the upper surface of the base plate 3.
It is generally composed of a cushion rubber 6 that receives the distal end side of the unit support plate 5. A pair of guide rails 7.7 are vertically fixed to the front surface of the unit support plate 5, as shown in FIGS. 1-4.

At the lower and upper portions of the pair of guide rails 7.7, the fixture unit support frame 30 and the adjustment driver unit support frame 40 are provided so as to be slidable in the vertical direction via respective guides 8.9.

The fixture unit support frame 30 includes a concave upper plate 31, side plates 32.32 extending downward from both sides of the upper plate 31, and rear edge surfaces of the upper and side plates 31.32. With the fixed rear plate 33, it is formed into a substantially box shape with openings at the front and bottom. After this, a pair of guides 8.8 are fixed to the back surface of the plate 33. An L-shaped bracket 34 is fixed to the rear portion of the upper plate 31. Further, a rectangular panel 35 is fixed in a notch 33a formed at the center of the rear plate 33 through a predetermined means. A plurality of vertically elongated female connectors 36 are fastened and fixed to this panel 35 at regular intervals. These female connectors 36 are connected to the control sequencer 11 provided on the back side of the unit support plate 5.
It is connected to various circuit blocks (none of which are shown), such as a signal generator that generates various input signals necessary for adjustment and inspection of the printed circuit board A of the VTR housed in a computer, a detector for wave detection, etc. Each is connected. It should be noted that a plurality of male connectors 54 on the fissure unit 50 side, which will be described later, are detachably fitted into each of the female connectors 36.

In addition, at the center of both ends of the upper plate 31 of the fixture unit support frame 30, side plates 12.12 protrude forward from both sides of the front lower part of the unit support plate 5.
Each C of the pair of air cylinders 10.10 fixed to
It is fixed at the tip of 1 Rad 10a and 10a. By moving each rod 10a of the pair of air cylinders 10.10 back and forth, the fixture unit support frame 30 is able to reciprocate vertically along the unit support plate 1-5. The upper limit of the rise of the fixture unit support frame 30 is regulated by a pair of stoppers 13, 13 fixed to the unit support plate 5.

The fixture unit 50 includes an acrylic board 52 set on the L-shaped bracket 34 on the upper surface of the upper plate 31 of the fixture unit support frame 30, and a plurality of acrylic boards 52 are planted on the acrylic board 52, and a plurality of acrylic boards 52 are installed on the acrylic board 52, and a plurality of acrylic boards 52 are installed on the acrylic board 52, and The contact pin 51 protrudes upward, and is connected to the contact pin 51 etc. via a cord 53,
It is comprised of a vertically long male connector 54 that is fitted into and removed from each female connector 36 of the panel 35.

Note that, when adjusting or inspecting printed circuit boards A having different configurations, several types of fixture units 50 are available in various shapes with different positions of contact pins 51, overall sizes, etc. This fixture unit 50 includes a pair of holding means 55 shown in FIG. 2.6.
This makes it easier to put on and take off. Each of the holding means 55 is screwed into a U-shaped frame 56 that sandwiches the acrylic board 52 of the fixture unit 50 and the upper plate 31 of the fixture unit support frame 30, and the lower part of this frame 56, and is screwed in manually. It consists of an acrylic board 52 and bolts 57 that hold the upper plate 31 in a frame 56.

The adjustment driver unit support frame 40 also includes a concave-shaped lower plate 41, a pair of side plates 4242 extending upward from both sides of the lower plate 41, and a rear edge surface of each of these plates 41, 4.2. Fixed rear plate 4
3, it is formed into a substantially box-like shape with openings at the front and top. After that, a pair of guides 99 are fixed to the back surface of the plate 43, respectively. And this bottom play h4. On the underside of I, a pair of retaining means 45.4
5, the adjustment driver unit 60 can be detachably attached. Each holding means 45
is movable up and down by bolts 46 which are rotatably screwed manually into the center of each end of the lower plate 41, and by a pair of guide pins 47 and 47 protruding from each end of the lower surface of the lower plate 41. A lower base plate 63 (described later) of the adjustment driver unit 60, which is guided by the bolt 46 and screwed into the threaded portion of the bolt 46, is held between the lower surfaces of the lower plate 41.
It is composed of a letter-shaped frame 48.

Further, the rear plate 43 of the adjustment driver unit support frame 40 has an opening 5a formed in the center of the unit support plate 5 through which the unit support plate 5 is opened.
An L-shaped bracket 21 protruding from the back side of the frame is fixed. The tip of this bracket 21 connects to the air cylinder 20 fixed to the upper rear surface of the unit support plate 5.
It is fixed to the tip of the lock F20a. By moving the rod 20a of the air cylinder 20 back and forth, the adjustment driver unit support frame 40 can reciprocate vertically along the unit support plate 5. The upper limit of the adjustment driver unit support frame 40 is as follows:
It is regulated by a stopper 22 fixed to the unit support plate 5.

The adjustment driver unit 60 is connected to two upper and lower base plates 62 and 63 and a plurality of pulse motors 64 provided on the upper base plate 62, and protrudes downward through the lower base plate 63. It is comprised of a plurality of drivers 61 for simultaneously adjusting the adjustment elements B of the printed circuit board A, a plurality of board holding bars 65 protruding downward from the lower surface of the lower base plate 63, and the like. The male connector 66 of the pulse motor 64 is detachably fitted into a female connector 67 provided on the unit support plate 5. In addition, when adjusting or inspecting printed circuit boards A having different shapes and configurations, several types of adjustment driver units 60 are available in various shapes with different driver 61 positions, overall sizes, etc. . The adjustment driver unit 60 can be easily attached and detached by the pair of holding means 45, 45 shown in FIG. 1.5.

In addition, as shown in FIG. 1, the adjustment driver unit 6
The front lower part of the adjustment driver unit support frame 40 is covered by a cover 25 that is attached to a pair of side plates 42 42 of the adjustment driver unit support frame 40 via brackets 24 fixed by screws 23 .

The board transport mechanism 70 is provided approximately in the middle of the stop positions of the fixture unit support frame 30 and the adjustment driver unit support frame 40 before adjustment and inspection, and the board transport mechanism 70 is provided to transport the pair of boards disposed on both sides of the apparatus main body 2. Transport unit 80.8
Printed circuit board A is loaded and unloaded from 0. This substrate transport mechanism 70 includes four pulleys 71a on the inner surface of the front plate 15 of the unit support plate 5.
71d, and a moving plate 17 that moves in the front and back direction via a pair of shafts 16. A conveyor belt 74 stretched on the side surface via four pulleys 73a to 73d, and each of the pulleys 71
It is roughly composed of a drive shaft 77 that drives a pair of gears 7676 that simultaneously rotate gears 75 and 75 attached to the gears 75 and 73a, and a motor 79 that rotates one of the gears 76 via each gear 78a and 78b. ing.

Note that the printed circuit board A is connected to the pair of conveyor belts 72.
．． A pair of guide plates 79 are fixed to the upper part of the front plate 15 and the moving plate 17.
．． 79 for positioning and conveyance. Further, the printed circuit board A that has been transported is detected by an arrival sensor 26, and its stopping position is determined by a pair of stoppers 28, 28 that are moved up and down by an air cylinder 27. Further, the movement width of the moving plate 17 is locked by each lever 29.

Further, each of the substrate transport units 80 has a front and a rear.

It has a box shape with left and right side plates 81 and 82 open at the top and bottom, and the printed circuit board A is carried in and out of the board transport mechanism 70 of the apparatus main body 2. The substrate conveyance mechanism of each substrate conveyance unit 80 is comprised of a conveyor belt 84 stretched across the inner surface of the front plate 81 via five pulleys 83a to 83e, and a conveyor belt 84 between the front and rear plates 81 and 81. The frame includes a conveyor belt 88 stretched across five pulleys 87a to 87e on the side of a moving plate 86 that moves in the front and back direction via a pair of shafts 85.85, and each of the pulleys 83d and 87d. It is generally composed of a drive shaft 90 that simultaneously rotates gears 89b and 89b that mesh with gears 89a and 89a attached thereto, and a motor 91 that rotates one of the gears 89b via a gear 91a. The printed circuit board A is conveyed between the pair of conveyor belts 84 and 88, but the front plate 81
A pair of guide plates 92 and 92 fixed to the upper part of the moving plate 86 position the paper and transport the paper. Further, the printed circuit board A that has been transported is detected by an arrival sensor 93, and its stopping position is determined by a stopper 95 that is moved up and down by a rotary cylinder 94.

Furthermore, the moving width of the moving plate 86 is determined by each lever 96.
It is now locked.

Note that the substrate transport unit 80 and the apparatus main body 2 are
As shown in FIG. 12, the end plate 18 of the apparatus main body 2, which matches and adjoins the side plate 82 of the substrate transport unit 80, can be easily attached and detached by holding an inverted U-shaped hook plate 19. There is. In addition, by pulling the operating levers 97 provided on both sides of the front of the device main body 2, the lock arm 99 is separated from the lock bin 98 of the base plate 1-3, and the unit support plate 5 is tilted 90'' backward with respect to the base plate 3. This makes it easy to attach and detach the fixture unit 50 and perform maintenance and inspection.

According to the automatic adjustment inspection device 1 of the above embodiment, when adjusting and inspecting the adjustment element B such as a variable resistor of a printed circuit board A used in a video tape recorder (VTR), for example,
The printed circuit board A is transported by one board transport unit 80.
are positioned and set at predetermined positions on the pair of conveyance belts 72, 74 of the substrate conveyance mechanism 70 in the apparatus main body 2, and each air cylinder 10120 is driven to move each rod 10a, 20a.
When these are raised, the fixture unit support frame 30 fixed to the tip of the rod 10a is raised, and the adjustment driver unit support frame 11 fixed to the tip of the rod 20a is lowered.

As a result, the fixture unit 50 and the adjustment driver unit 60 are brought close to each other, and the contact pin 51 of the fixture unit 50 is connected to the adjustment driver unit 6.
The adjustment driver unit 60 comes into contact with the back surface of the printed circuit board A before the driver 61 of No. 0 does, and the presser bar 65 of the adjustment driver unit 60 contacts the front surface of the printed circuit board A. In this way, the contact pin 51 of the fixture unit 50 and the presser rod 6 of the adjustment driver unit 60 are connected.
5, the printed circuit board A is lightly pressed, and the adjusting element B of the printed circuit board A is automatically adjusted and inspected via the driver 61, contact pins 51, and the like.

In this way, the rod 1 of the 2-set air cylinder 10.20
The fixture unit 50 having the contact pins 51 and the adjustment driver unit 60 having the driver 61 are brought close to each other and separated from each other by driving 0a and 20b, so that the entire apparatus 1 can be downsized.

Furthermore, since the fixture unit 50 and the adjustment driver unit 60 can be brought close to each other and separated from each other by sandwiching the printed circuit board A, the contact pins 51 and the driver 61 can be brought into contact with the wiring board A in a short time and with high precision. be able to.

In addition, since each unit 50, 60 can be easily attached and detached from each unit support frame 30, 40 of the apparatus main body 2 via each holding means 55, 45, each unit 50, 60 can be easily replaced in a short time. It is possible to adjust and inspect printed circuit boards of various shapes and configurations. Also,
Each substrate transport unit 80, 80 can be easily connected to both sides of the apparatus main body 2 via a plurality of hooks 19, and line organization is possible.

Furthermore, this automatic adjustment inspection device 1 can be separated into the device body 2 and each unit 50, 60, 80, and is compact without the pedestal part unlike conventional ones, so it can be installed in a small space such as a desk. As well as being able to
Even when transporting to another location, transport work is easy and transport costs can be kept low.

In the above embodiment, the fixture unit support frame, the adjustment driver unit support frame, etc. are moved up and down by the air cylinder, but the driving means is of course not limited to the air cylinder.

[Effects of the Invention] As described above, according to the present invention, the device main body is provided with a driving means for moving the fixture unit having contact pins and the adjustment driver unit having a driver toward and away from each other. The entire structure can be downsized. Further, since the fixture unit and the adjustment driver unit can be moved closer to each other and separated from each other by sandwiching the wiring board, the contact pins and the driver can be brought into contact with the wiring board in a short time and with high precision. Furthermore, the fixture unit, adjustment driver, and board transfer unit can be removably attached to the main body of the device, making it easy to replace each unit in a short time. Adjustment of.

It becomes possible to conduct an inspection. Furthermore, since each unit can be easily separated, it can be easily transported at low cost when transporting to another location.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is a side view of the main body of an automatic adjustment inspection device for wiring boards showing an embodiment of the present invention, FIG. 2 is a front view of the main body of the device, and FIG. 3 is a front view of the same device. Fig. 4 is a plan view of the main body, and Fig. 5 is a plan view of the fixture unit support frame portion of the device main body.
The figure is an explanatory diagram of the holding means of the adjustment driver unit, FIG. 6 is an explanatory diagram of the retaining means of the fixture unit, FIG. 7 is an explanatory diagram of a part of the operating lever, and FIG. 8 is a board used in the above-mentioned automatic adjustment inspection device. 9 is a front view of the substrate transfer unit, FIG. 10 is a side view of the substrate transfer unit, FIG. 11 is a sectional view taken along line E-E in FIG. 8, and FIG. 12 is a plan view of the transfer unit. is an overall perspective view of the above automatic adjustment inspection device,
FIG. 13 is a side view of the conventional example. 1... Automatic adjustment inspection device, 2... Device main body, 102
0...Air cylinder (driving means), 30.40...Unit support frame, 50...Fixture unit, 5
DESCRIPTION OF SYMBOLS 1... Contact pin, 60... Adjustment driver unit, 61... Driver, 70... Board transfer mechanism, 80... Board transfer unit, A. Printed circuit board (
wiring board), B...adjustment element. ia Substrate transport unit, land beam plan Figure 8/94 9 a 9' Side view of the board, 1 transport unit Figure 10 Cross-sectional view along line E-E in the 8th area Figure 11 1990 7 Display of the May 5th case Kosei 2nd Patent No. 1 No. 13548 Name of the invention Person who corrects wiring board automatic adjustment inspection device Relationship with the case Applicant (218) Represented by Sony Corporation Address: 104 Tokyo Suiseikai Hill ρq, 1-29 Akashi-cho, Chuo-ku Top view of conventional example

Claims (1)

[Claims] (1) A pair of unit support frames are provided in the main body of the device that are moved vertically by a driving means to approach and separate, and one of the unit support frames has a plurality of contact pins that input and output electrical signals to the wiring board. At the same time, an adjustment driver unit having a plurality of drivers for adjusting the adjustment elements of the wiring board is removably installed on the other unit support frame, A board transport mechanism for transporting the wiring board is provided between the unit support frames, and a board transport unit for transporting the wiring board into and out of the board transport mechanism is detachably attached to the main body of the apparatus. Automatic adjustment inspection equipment for wiring boards.