JPH03211404A - Bend inspection device for connector pin - Google Patents

Abstract

PURPOSE:To speedily and accurately detect a defect such as the bend and floating of pins, etc., by irradiating the connector pins with light in order and counting photodetection electric signals from a reflected light detecting means. CONSTITUTION:The pins 10a arrayed on the end surface 10b of a connector 10 are irradiated with the light A from a light irradiating means 11 and its reflected light B is detected by the reflected light detecting means 12, which outputs an electric signal when detecting the reflected light and no electric signal when not detecting the light, so that a measuring means 13 counts how many times the electric signal is outputted. If a pin 10a bends or floats, the light A irradiates the pin while diverged above the pin, so its reflected light B becomes weak in intensity and a photodetection part sends no electric signal. Consequently, when all the pins are normal, the measuring means 13 outputs a number corresponding to the number of the pins, but when there are defective pins, the measuring means outputs a number obtained by subtracting the number of the defective pins.

Description

[Detailed Description of the Invention] [Summary] A connector pin for inspecting bending in a direction perpendicular to the direction in which the pins are arranged in a connector having pins vertically disposed on an end face and arranged linearly in the longitudinal direction of the end face. The purpose of the present invention is to provide a connector pin bending inspection device that can detect connector pin bending quickly and accurately, and includes a light irradiation means for condensing light and forming an image on the pin, and a light irradiation means for condensing light and forming an image on the pin. A reflected light detection means that outputs an electrical signal when the reflected light of the imaged light is received and does not output an electrical signal when the reflected light is not received, and a reflected light detection means that measures the number of times the electrical signal is outputted from the reflected light detection means. The connector is configured to move the connector in the direction in which the pins are arranged to detect bending in a direction perpendicular to the direction in which the pins are arranged.

[Industrial Application Field] The present invention relates to a connector pin that inspects bending in a direction orthogonal to the direction in which the pins are arranged in a connector having pins vertically disposed on an end face and arranged linearly in the longitudinal direction of the end face. The present invention relates to a bending inspection device, particularly a connector pin bending inspection device capable of quickly and accurately detecting a bending of a connector pin.

Recently, with the aim of increasing the functionality and downsizing of information processing equipment, etc., and with the aim of improving customer service and safety in the financial industry such as banks, ICs have been mounted on printed circuit boards about the size of business cards. Memory cards are rapidly becoming obsolete.

Next, such a memory card will be explained with reference to a perspective view of the memory card assembly process shown in FIG. 3.

That is, the assembly of the memory card consists of a solder band 21a for soldering the pins of the connector, a die pad 21b for bonding the IC, and wiring for wire bonding the thin metal wires, as shown in FIG. Moisture-proof resist I-2 except for a part of pattern 21c
The printed circuit board 21 whose surface is coated with 1d becomes the starting material.

Then, the IC 22 is attached to the die pad 21b using a conductive resin.
After mounting the IC, gold (A) is applied between the IC electrode and the wiring pattern.
After connecting thin metal wires 23 such as u) by wire bonding (see figure (b)), for the purpose of moisture proofing the RC,
A sealing resin 24 for semiconductors is applied on and around the IC (see FIG. 3(c)).

Next, while the curved portion of the pin 25a of the connector 25 is brought into sliding contact with the solder pad of the printed circuit board, the connector is pushed into the printed circuit board to temporarily fasten the connector to the printed circuit board (see FIG. 4(d)).

After that, the pins of the connector and the solder band of the print IT are soldered to permanently fix the connector to the printed circuit board (see FIG. 12(e)).

After mounting this printed circuit board on the frame 27, cover plates 28 are attached to both sides of the frame to complete the memory card (see (f) in the same figure).

However, if a connector is temporarily attached to a printed circuit board and then permanently attached, soldering defects often occur due to bent pins or pins coming off the printed circuit board.

For this reason, when a connector is temporarily attached to a printed circuit board, it is common practice to carefully inspect the pins for bent pins or floating pins from the printed circuit board.

[Conventional technology]

The conventional method for inspecting whether the pins are bent or floating from the printed circuit board when such a connector is temporarily attached to the printed circuit board is a visual inspection using a microscope.

[Problem to be solved by the invention]

Although the conventional inspection method described above has the drawback of requiring a large number of inspection steps, there is no particular problem in detecting the bending of the pin itself.

However, to detect floating pins from a printed circuit board, a microscope that can change the focal length, that is, a zoom microscope, is used to compare the image blurring of the pin surface. In addition to requiring more time than other tests, there were also problems with the reliability of detection.

The present invention has been made to solve this problem, and its purpose is to provide a connector pin bending inspection device that can quickly and accurately detect the floating state of a connector pin from a printed circuit board. It is in.

[Means to solve the problem]

The purpose is to improve the row of pins 10a of the connector 10, which has pins 10a vertically disposed on the end surface 10b and arranged linearly in the longitudinal direction of the end surface 10b, as shown in FIG. A connector pin bending inspection device for inspecting bending in a direction perpendicular to the direction in which the connector pins are installed includes a light irradiation means 11 for condensing light A and forming an image on the pin 10a, and a pin 10a.
Reflected light detection means 1 that outputs an electrical signal when receiving the reflected light B of the light A formed on the image, and does not output an electrical signal when not receiving the reflected light B.
2, and a measuring means 13 for measuring the number of times an electric signal is outputted from the reflected light detecting means 12 and outputting the number of times, and moving the connector 10 in the direction in which the pins 10a and 10a are arranged. This is achieved by a connector pin bending inspection device that detects bending in a direction perpendicular to the direction in which the connector pins are arranged.

[For production]

In the connector pin bending inspection device of the present invention, each time the reflected light detection means 12 receives the reflected light B of the light A focused on the light 10a by the light irradiation means 11, the measuring means 1 detects an electrical signal.
It is configured to output to 3.

This measuring means 13 measures the number of times an electric signal is output from the reflected light detecting means 12 and outputs the number of times, so in the above state, the connector 10 is connected to all pins from one end to the other in the direction in which the pins 10a are arranged. By moving the pin 10a
It becomes possible to inspect bending in a direction perpendicular to the direction in which the lines are arranged.

That is, the measuring means 13 outputs a number corresponding to the total number of pins if all the pins are good, and outputs the difference between the total number of pins and the number of defective pins if there is a defective pin.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

Fig. 2 is an explanatory diagram of an embodiment of the connector pin bending inspection device of the present invention, Fig. 2 (a) is a schematic perspective view of the main parts of the inspection device, and Fig. 2 (b) is a diagram showing a state in which the connector is temporarily fixed to a printed circuit board. FIG. 3 is a side view of main parts in the state.

That is, one embodiment of the present invention includes a photoelectric switch 22, a high-speed counter 23, and a cylinder 24, as shown in FIG.
, a reset sensor 25, an end sensor 26, a shielding plate 27, and the like.

The detailed configuration and functions of one embodiment of the connector pin bending inspection device of the present invention having such a configuration will be described below.

First, as shown in FIG. 2B, the terminals 20a are arranged in rows on both sides of the two printed circuit boards to which the connector 20 is temporarily attached, that is, the printed circuit board 21, in the vicinity of both edges perpendicular to the longitudinal direction of the end surface 20b of the connector 20. The provided terminal row 20A and the terminal row 20^'' sandwiched therebetween are placed on a sample mounting table with the terminal row, for example, the terminal row 2OA facing upward and horizontally. Note that the sample mounting table is not shown for the purpose of simplifying the drawing.

Next, when the cylinder control section (not shown) is operated to start the operation of the cylinder, the first plunger 24a equipped with a photoelectric switch is gently pushed out from the main body section 24c in the direction of arrow A, and the shielding plate is pushed out. The second installed
Plunger 24b is drawn into the main body in the same direction and at the same speed as the first plunger.

Then, at the moment when the shielding plate comes between the light transmitting part 25a and the light receiving part 25b of the reset sensor and blocks the beam-shaped light beam (not shown) sent out by the light transmitting part 25a, the reset throat sensor transmits the electric signal at high speed. It is sent to the counter to return the number displayed by the high-speed counter to zero and to put it into operation.

Even at such times, the cylinder continues to operate, so
The first plunger and the second plunger continue to move in the direction of the arrow.

Therefore, the photoelectric switch attached to the first plunger first approaches directly above the endmost pin of the connector temporarily fixed to the printed circuit board immediately after the high-speed counter becomes operational.

A photoelectric switch has a light-emitting section that emits light itself and forms an image on the pin of a connector that is temporarily fastened to a printed circuit board, and a reflection section that focuses the light onto the pin of the connector that is temporarily fastened to the printed circuit board. A light receiving section that collects and receives light and sends an electrical signal to the high-speed counter if the intensity is above a certain level, and does not send the electrical signal to the high-speed counter if the intensity is below a certain level. There is.

In this way, by moving the photoelectric switch over the row of pins of the connector temporarily fastened to the printed circuit board, the photoelectric switch sends an electrical signal to the high-speed counter if the pins of the connector are not bent; No signal will be sent to the high speed counter.

In other words, if the pin is not bent, the light from the light emitting part of the photoelectric switch will be focused as an image on the pin, so of course the intensity of the reflected light will be strong, so the light receiving part of the photoelectric switch will be When a signal is sent to a high-speed counter, on the other hand, if there is a bend in the pin, the light from the light emitting part of the photoelectric switch is irradiated onto the pin in a diverging state, so naturally the intensity of the reflected light is weak, so the photoelectric switch The light receiver does not send out electrical signals.

Further, the high-speed counter is configured to add up the number of times the electrical signal is output from the photoelectric switch and display the number of times the electrical signal is output.

Therefore, when the photoelectric switch finally passes the other end pin of the connector, it is possible to determine whether or not there is a bend in the pin of the connector by reading the number displayed by the high-speed counter. .

In other words, if the number displayed by the high-speed counter is the same as the total number of pins, there is no bend in the pin, and if the number displayed by the high-speed counter is smaller than the total number of pins, there is no bend. The difference between the total number of pins and the displayed number is the number of curved pins.

Immediately after the photoelectric switch finishes passing over all the pins, the shielding plate closes the light transmitting section 26a and the light receiving section 2 of the entodo sensor.
A beam-shaped light beam (
(not shown), the end sensor sends an electrical signal to the high-speed counter, and the high-speed counter stops operating and holds the displayed number as it is.

Furthermore, since the electric signal from the end sensor is also sent to the control section of the cylinder, the control section moves the first plunger and the second plunger to the cylinder in the direction opposite to the direction of the arrow, and then activates the first plunger and the second plunger. Then, the first plunger and the second plunger are returned to their initial positions and stopped to standby for the next inspection.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, it is possible to provide a connector pin bending inspection device that can quickly and accurately detect connector pin bending.

Therefore, by using the connector pin bending inspection device of the present invention to inspect for lifting of the pins from the printed circuit board when the connector is temporarily attached to the printed circuit board of the memory card, it is possible to not only improve the manufacturing yield of the memory card but also improve the quality of the finished product. The reliability of the memory card can also be improved.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of the principle of the present invention, FIG. 2 is an explanatory diagram of an embodiment of the connector pin bending inspection device of the present invention, and FIG. 3 is a perspective view of the memory card assembly process. In the figure, 10 is a pin of the connector 10a, 10b is an end face of the connector, 11 is a light irradiation means, 12 is a reflected light detection means, 13 is a measurement means particle, A is light, and B is reflected light. , f - e to 4/l Sairi Kakurou Figure 1 20Q ? '. 20A'I'1

Claims (1)

[Claims] The arrangement direction of the pins (10a) of a connector (10) having pins (10a) vertically disposed on the end face (10b) and arranged linearly in the longitudinal direction of the end face (10b). A connector pin bending inspection device for inspecting bending in a direction orthogonal to the pin, comprising: a light irradiation means (11) for condensing light (A) and forming an image on the pin (10a); reflected light detection means (12) that outputs an electrical signal when the reflected light (B) of the imaged light (A) is received, and does not output the electrical signal when the reflected light (B) is not received; and the reflected light detection means (12). measuring means (13) for measuring the number of times the electrical signal is outputted from and outputting the number of times, and moving the connector (10) in the direction in which the pins (10a) are arranged to A connector pin bending inspection device characterized by detecting bending in a direction perpendicular to the direction in which the pins (10a) are arranged.