JPH0446387B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a pin-standing device for erecting probe pins when assembling an adapter for conducting continuity tests of printed wiring boards, etc.

(Prior Art) Continuity testing of printed wiring boards 1 has conventionally been carried out using a bare board tester 4 equipped with a pin insertion type adapter 3 into which probe pins 2 are inserted, as shown in FIG. .

This pin insertion type adapter 3 is usually made by stacking two transparent plates 5a, 5b such as acrylic plates with off-grid holes and an on-grid lattice 6 with on-grid holes through spacers 7a, and assembling them with screws. 8, the probe pins 2 are inserted into predetermined off-grid hole positions of the transparent plates 5a and 5b, and the rear ends are dropped into the on-grid lattice 6, thereby assembling.

However, since this pin-standing work has conventionally been done manually, two transparent plates 5a, 5
It takes an average of 25 minutes to insert the probe pins 2 one by one into the off-grid hole positions shown in b, and an average of 7 minutes to firmly drop the rear end of the probe pins 2 into the on-grid grid 6, including other assembly time. 1
The problem was that it took two people an average of 45 minutes to complete a set, making it very inefficient. Further, when the adapter 3 is disassembled after the inspection, it is necessary to realign the probe pins 2, and this preparation also takes time.

(Problems to be Solved by the Invention) As described above, in the conventional pin stand device for continuity testing adapters, the probe pins 2 are manually inserted one by one into the holes of the transparent plates 5a and 5b which have been subjected to off-grid drilling. This problem not only results in poor work efficiency, but also takes time to prepare for the next inspection, and there has been a desire to improve this problem.

The present invention has been made to solve such problems, and an object of the present invention is to provide a pin stand device that efficiently stands probe pins on an adapter for testing continuity of a printed wiring board and assembles the probe pins.

[Structure of the Invention] (Means for Solving the Problems) The printed wiring board inspection device of the present invention includes a holding base for fixing a probe pin holding plate having off-grid holes with the off-grid holes facing upward. ,
A stocker is placed on the holding table and stores a large number of probe pins with the pin heads facing upward, and holds only the front probe pins in a dropable state, and this stocker is attached to the probe pin holding plate on the holding table. The present invention is characterized by comprising a drive device that relatively moves the probe pin in the stocker back and forth along the stocker, and a vibration device that gives vibration to the probe pin in the stocker.

(Function) In the device of the present invention, a large number of probe pins housed in a stocker are aligned by a vibrating device, and then the probe pins are brought to the position of the off-grid hole of the probe bottle holding plate as the stocker and the holding base are guided relative to each other. At this time, the pins are successively dropped into the off-grid holes of the holding plate using a vibrating device and a swinging device provided as necessary to perform pin setting.

(Example) Examples of the present invention will be described below based on the drawings.
As shown in FIG. 1, the pin holding device of this embodiment includes a holding base 11 that holds a probe pin holding plate 10 at a slight forward inclination, and a stocker 13 that holds a large number of probe pins 12 upright. and,
a stocker moving device 14 that moves the stocker 13 back and forth along the probe pin holding plate 10 on the holding base 11; a rocking device 15 that gives the probe pin 12 in the stocker 13 back and forth fragrance and vibration in the vertical direction; Its main portion is composed of a vibrating device 16 fixed to the bottom plate of the holding table 11.

The probe pin holding plate 10 is made up of two transparent acrylic plates 10a and 10b, each having off-grit holes drilled at predetermined corresponding positions, and mounting holes drilled around the periphery thereof.

Mounting guide pins 17 are protruded from the holding base 11 at positions corresponding to the mounting holes, and the probe pin holding plate 10 is fixed to the holding base 11 by fitting the mounting holes into the mounting guide pins 17. Ru.

The stocker 13 is divided into a plurality of sections in the width direction, and its bottom plate is set back by one row of probe pins in front, so that the probe pins 12 can be fed downward from this section. Furthermore, a rectangular rod-shaped feeder 18 constituting the swinging device 15 is disposed across the front surface of the stocker 13, and this feeder 18 is connected to an eccentric pulley 1 provided at the end thereof.
9 causes the probe pin 12 to swing back and forth and up and down while rotating in the direction of arrow C.

The stocker moving device 14 includes a guide rail 20 arranged in parallel on both sides of the stocker 13, a guide wheel 21 that supports the stocker 13 and runs on the guide rail 20, and a guide wheel 21 that supports the stocker 13 and runs on the guide rail 2.
0, and a drive device (not shown) that moves the robot back and forth on the vehicle.

The apparatus of this embodiment is used in the following manner. First, in each section of Stotzker 13,
Roughly insert 100 to 300 probe pins 12 by hand with the pin heads facing upward. Next, weights 21 are placed behind each of these probe pins 12, and while the weights 21 press the probe pins 12 against the alignment plate 22 at the front of the stocker 13, the vibration device 16 slightly vibrates the entire stocker 13. The probe pins 12 housed in each compartment are aligned.

Next, fit the mounting holes of the two transparent acrylic plates 10a and 10b with off-grid drilling into the mounting guide pin 17 on the upper part of the holding base 11, and move the stocker 13 in the direction of arrow A along the guide rail 20. Pull it back all the way. Next, while driving the drive device to slowly move the stocker 13 backward (30 to 40 mm/min) along the guide rail 20 in the direction of arrow B, the drive device rotates the eccentric pulley 19 at a low speed, and the feeder 18 The probe pins 12 aligned in the compartment are vibrated back and forth and up and down, and the probe pins 12 are moved sequentially from the front row past the feeder 18 and the alignment plate 22 below the feeder 18 to the probe pin holding plate 1.
0 and insert them into the off-grid holes one after another. At this time, the stepped portion 12a of the probe pin 12 may get caught in the periphery of the off-grid hole and may not be inserted smoothly. To prevent this, the stepped portion 12a of the probe pin 12 is Before the attachment part 12a reaches the vicinity of the hole, the tip part 12b of the probe pin 12 is stopped from falling by hitting the cushion board 23 placed below the probe pin holding plate 10, and the probe pin 12 is completely attached to the hole. After applying vibration for several minutes until it becomes parallel to , the entire probe pin 12 including the stepped portion 12a is inserted into the off-grid hole of the probe pin holding plate 10.

In this way, the stocker 13 moves to the retract limit while dropping the probe pin 12 into the off-grid hole of the probe pin holding plate 10, and the probe pin 12 remains inserted from the holding base 11 to the probe pin holding plate 10. Remove it with . After this, as shown in FIG. 3, the two transparent acrylic plates 10a and 10b are widened and a spacer 24a is inserted between them, and a spacer 24a is placed between them.
Place the on-grid grid 25 through the cables 4b and screw them together with the assembly screws 26 to attach the adapter 2.
Assemble 7.

After this adapter 27 is mounted on the holding base 11 again, the lower end of the probe pin 12 is dropped into the hole of the on-grid grid 25 by applying slight vibration in the vertical direction using the vibration excitation device 16.

The adapter 27 with the probe pin 12 erected in this manner is transferred onto a light table, and it is checked whether the probe pin 12 has been inserted incorrectly. If there is no omission in the insertion, this adapter 27 is attached to a bare boat tester and used for programming and electrical testing of the printed wiring board.

In addition, in the present invention, one of the two transparent acrylic plates 10a and 10b on the stocker side is
If the probe pin 12 is used with a salami finish as shown in FIG. The time required to check for insertion leakage can also be shortened.

This machining process can perform both transparent machining and salami machining on two transparent acrylic plates in one process by using a special drill having a cutting edge part 28a and a machining part 28b as shown in Fig. 5. Can be done.

[Effects of the Invention] As explained above, according to the pin stand device of the present invention, the work of inserting the probe pin into the probe pin holding plate, which conventionally took 25 minutes, can be done in about 10 minutes including the preparation work. It can be carried out.

In addition, probe pins can be refilled in the stocker at any time even while inserting probe pins without stopping the device.
The time required for preparation work for the next adapter assembly can be significantly reduced.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing one embodiment of the present invention;
Figures 4 and 3 illustrate their use.
The figure is a cross-sectional view of a transparent acrylic board that has been processed with a sara-momi process, Figure 5 is a front view of the special drill used to perform the sara-momi process, and Figure 6 is a perspective view showing the state in which the adapter is attached to a bare board tester. be. 10... Probe pin holding plate, 11... Holding base, 12... Probe pin, 13... Stocker, 14... Stocker moving device, 15... Rocking device, 16... Vibration device, 17... Installation Guide pin, 18... Square rod-shaped feeder, 19... Eccentric pulley, 25... On-grid grid, 27... Adapter.

Claims (1)

[Scope of Claims] 1. A holder for fixing a probe pin holder plate having off-grid holes with the off-grid holes facing upward, and a large number of probe pins arranged on the holder with the pin heads facing upward. A stocker that is stored upright and holds only the front probe pin in a dropable state; a drive device that relatively moves this stocker back and forth along the probe pin holding plate on the holding base; and a probe in the stocker. A printed wiring board inspection device characterized by comprising a vibrating device that applies vibration to a pin. 2. The printed wiring board inspection device according to claim 1, wherein the stocker is partitioned into a plurality of sections in the width direction. 3. The probe pin holding plate consists of two transparent plates with off-grid holes.
The printed wiring board inspection device described in Section 1.