JPH0714918Y2 - Electricity inspection device for printed circuit boards - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simple electric conduction inspection device for a printed circuit board.

[0002]

2. Description of the Related Art Conventionally, as a current-carrying inspection device for a printed circuit board of this type, a contact pin base is provided in a rectangular box-shaped frame having an opening of a required width on its upper surface so that the contact pin base can be raised and lowered, and an outer portion of the frame is also provided. There is known a simple one in which a holding arm for a printed circuit board is erected. Then, such an electric current inspection device sets a desired printed circuit board in the opening through a mounting frame, presses and supports the printed circuit board from above with a holding arm, and raises the contact pin base from below to contact pin. Is to be brought into contact with the lower surface of the printed circuit board, and an electric current inspection is performed.

[0003]

By the way, the conventional current inspection device is extremely compact, but
Since the electric current inspection is performed while setting the printed circuit boards one by one by hand, it is very troublesome and time-consuming and the inspection efficiency is extremely poor. In addition, the width of the opening where the printed circuit board should be set is always fixed, and it is very difficult to change the contact pin base inside the frame. It was applicable only to.

This invention intends to solve the problems of the prior art all at once, and not only allows the printed circuit boards to be set mechanically one after the other, so that the current-carrying inspection can be performed efficiently, but also depending on the type of the printed circuit board. The present invention is to provide a current inspection device capable of freely adjusting the set width and adapting to various printed boards.

[0005]

That is, according to the present invention, a pair of supporting side plates 3 and 4 on both sides are arranged in parallel on a substantially rectangular frame 1 via screw shafts 5 so that the distance between them can be adjusted. A pair of attachable / detachable contact pin bases 18 are provided at the central portion between the side plates 3 and 4 so as to be movable up and down, and inside the upper end portions of both supporting side plates 3 and 4 along the longitudinal direction thereof. A pair of endless belts 10 which can be intermittently synchronized at a constant speed are arranged to face each other, and the forward and backward movements of the respective endless belts 10 are performed.
An upper stopper 16 is provided at the middle position of the side running, and a vertically movable positioning stopper 21 is provided at a return side portion of the endless belt 10.

[0006]

The distance between the support side plates 3 and 4, that is, the distance between the endless belts 10 is properly adjusted by the screw shaft 5 according to the type of the printed circuit board 22 to be inspected. After that, the required printed circuit board 22 is intermittently fed between the supporting side plates 3 and 4 by the endless belt 10 to set the positioning stopper 2.
After being stopped at a predetermined position by 1, the contact pin base 19 is raised through the pedestal 18 while both side edges of the printed board 22 are hooked and supported by the upper stoppers 16, respectively, and the contact pin 20 is moved to the printed board 22. Conduct electrical inspection by touching the bottom surface. When the energization inspection is completed, the positioning stopper 21 descends and the printed circuit board 2
2 is released, the endless belt 10 starts running, and the printed circuit board 22 is discharged from the return side.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention shown in the drawings will be described below. Reference numeral 1 is a rectangular frame having a required width and length, 2 is a height-adjustable leg attached to each of the lower four corners of the frame 1, and 3.4 are both sides thereof along the longitudinal direction of the frame 1. A fixed support side plate and a movable support side plate 5, which are arranged in parallel on the upper surface, respectively, are a pair of distance adjusting screw shafts that connect both ends of the both support side plates 3 and 4, and the tip of each screw shaft 5 is movable. It is screwed onto the female screw member 6 of the support side plate 4, and the base end thereof is supported by the fixed support side plate 3 via a bearing 7. 8 is a transmission belt wound around the screw shaft 5 via a pulley, and 9 is a handle attached to one of the screw shafts 5, and the transmission belt 8 and the screw shaft 5 are rotated by rotating the handle 9. The movable support side plate 4 is made movable via the above, and the space between the movable support side plate 4 and the fixed support side plate 3 can be freely adjusted.

Reference numeral 10 designates a pair of endless belts which are horizontally arranged inside the upper ends of the fixed supporting side plate 3 and the movable supporting side plate 4 and which are free to run intermittently. The head pulley and the tail pulley are hung, and 13 is a connecting shaft for connecting between the tail pulleys 12.
4 is a motor for driving one head pulley 11,
When the motor 14 is started, each endless belt 10 is connected to the connecting shaft 1.
It is assumed that the vehicle runs synchronously at a constant speed via the No. 3. Reference numeral 15 is a guide member formed by bending the upper ends of the fixed support side plate 3 and the movable support side plate 4, and 16 is each guide member so as to be positioned above the outer edge of each endless belt 10 at the middle of traveling on the forward side. A pair of plate-like upper stoppers mounted on 15 and 17 are covers having an inverted L-shaped cross section. 1
Reference numeral 8 denotes a pair of pedestals which are arranged between the fixed support side plate 3 and the movable support side plate 4 so as to be movable up and down via air cylinders or the like on both sides of the frame 1. Each of the pedestals 18 is a movable support side plate. It is said that the mounting position can be freely changed corresponding to the movement of No. 4. Reference numeral 19 is a contact pin base horizontally installed on the pedestal 18, and reference numeral 20 is a contact pin of a required height erected on the contact pin base 19. Reference numeral 21 denotes a positioning stopper which is arranged on the frame 1 so as to be vertically movable via an air cylinder or the like so as to be positioned on the return side of the endless belt 10. The top dead center of the positioning stopper 21 is the traveling level of the endless belt 10 on the forward side. It is supposed to be located at a slightly higher level. In addition, 22 is a printed circuit board.

Next, the operation of the embodiment configured as described above will be described. First, install it on the required workbench. Then, the movable support side plate 4 is moved by the screw shaft 5 according to the type of the printed circuit board 22 to be inspected to properly adjust the distance between the endless belts 10 and the pedestal 1
8 is mounted at a required position, and a contact pin base 19 is installed between the receiving bases 18. Then, the endless belt 10
It may be used as a conveyer conveyor by connecting a required belt conveyor to both ends of the above, or by connecting only the endless belt 10 with the working example as shown in FIG. Then, the endless belts 10 are intermittently made to run at a constant speed, and the printed circuit board 22 is sequentially fed between the fixed and movable supporting side plates 3 and 4. At this time, the positioning stopper 21 is located at the top dead center. Then, when the front end of the printed circuit board 22 comes into contact with the positioning stopper 21, the traveling of the endless belt 10 is stopped, and
The upper end of both sides of the printed circuit board 22 is hooked and supported by the upper stopper 16, the pedestal 18 is moved upward, and the contact pins 20 of the contact pin base 19 are brought into contact with the lower surface of the printed circuit board 22 to conduct the electric conduction inspection (FIG. Through FIG. 5).

When the energization inspection is completed, the pedestal 18 and the positioning stopper 21 are lowered to release the printed circuit board 22, the endless belt 10 starts to run, and the inspected printed circuit board 22 is discharged from its return side. And delivers it to the endless belt 10 to be connected (see FIG. 6). Hereinafter, similarly, the printed circuit board 22 is sequentially fixed / movable while the endless belt 10 is intermittently run at a constant speed.
It is fed in the meantime, hooked on the positioning stopper 21 and the upper stopper 16, and the contact pin 20 carries out a conduction test in a flowable manner.

In the above embodiment, only the movable supporting side plate 4 is moved to adjust the distance between the fixed supporting side plates 3, but both of them may be configured to be movable. .

[0012]

Since the present invention is configured as described above, the required printed circuit board 22 is intermittently fed by the endless belt 10 between the support side plates 3 and 4, and the predetermined position is provided by the positioning stopper 21. After stopping at the position,
The both sides of the printed circuit board 22 are hooked and supported by the upper stoppers 16, respectively, and the contact pin base 19 is raised via the pedestal 18, and the contact pins 20 are brought into contact with the lower surface of the printed circuit board 22, thereby energizing the printed circuit board 22. The inspection can be performed efficiently and efficiently. Moreover, since the distance between both supporting side plates 3 and 4 is freely adjustable via the screw shaft 5, the distance between the endless belts 10 can be freely adjusted according to the type of the printed circuit board 22, and a wide variety of prints can be performed. It can be applied to the substrate 22. Further, there is a secondary effect that only the endless belt 10 is allowed to run and can be used for carrying the printed circuit board 22.

[Brief description of drawings]

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

FIG. 2 is a cross-sectional view taken along the line II of FIG.

3 is a sectional view taken along line II-II of FIG.

FIG. 4 is a vertical sectional view showing an operating state.

FIG. 5 is a partially enlarged side view showing a state where the printed circuit board 22 is supported by being hooked.

FIG. 6 is a vertical cross-sectional view showing the same operating state.

[Explanation of symbols]

 1 Frame 3 Fixed Support Side Plate 4 Movable Support Side Plate 5 Screw Shaft 10 Endless Belt 16 Upper Stopper 18 Receptor 19 Contact Pin Base 20 Contact Pin 21 Positioning Stopper 22 Printed Circuit Board

Claims (1)

[Scope of utility model registration request] 1. A pair of support side plates 3 and 4 on both sides are arranged in parallel on a substantially rectangular frame 1 via screw shafts 5 so that the distance between them can be adjusted, and a central portion between the support side plates 3 and 4 is provided. A pair of detachable contact pin base pedestals 18 are arranged so as to be able to move up and down, and inside the upper end portions of both supporting side plates 3 and 4, a pair of intermittent and synchronous constant velocity freely is provided along the longitudinal direction thereof. The endless belts 10 are arranged to face each other, and the upper stoppers 16 are provided at the midpoints of the traveling of the endless belts 10 on the forward side.
However, the printed circuit board current inspecting apparatus is provided with positioning stoppers 21 that can be raised and lowered, respectively, on the return side of the endless belt 10.