JPS62190800A - parts fixing device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a component fixing device for fixing, for example, electronic components to a printed circuit board.

[Prior Art] This type of conventional component fixing device fixes the component to the board by bending the legs of the component inserted from the front side of the board to the back side using clinch claws arranged on the back side of the board. Devices designed to do this are known.

This device is usually equipped with a detection means for detecting whether or not the parts are securely fixed, and there is a method using an optical fiber sensor as this means.

This is because an optical fiber sensor is placed on the side of the back side of the board, and when the foot is inserted into a predetermined position, the light projected from the optical fiber sensor is reflected on the foot, and this reflected light is received by the sensor again. This method detects the insertion of the foot, and thereby detects whether the component is placed in a predetermined position.

[Problems to be Solved by the Invention] However, the above detection means has the following drawbacks.

(1) The fiber cable of the optical fiber sensor vibrates due to the vibration when the clinch claw moves or the impact when inserting the foot into the board, causing the fiber cable of the optical fiber sensor to vibrate and not detect the foot of the detected part or detect the adjacent foot. This may result in incorrect operations such as

(2) If the leg of another component is already inserted between the detected part and the light emitting port of the optical fiber sensor, the leg will get in the way and the sensor light will not reach the target leg of the detected part. Cannot be detected.

(3) If the foot of the component is inserted obliquely, or if the surface of the foot is dirty or uneven and the reflectance to the optical fiber sensor is not constant, variations in detection will occur.

(4) Since the light emitting port of the optical fiber sensor needs to be close to the inserted leg, the space for installing the sensor is limited, making it difficult to apply when fixing parts to the board at high density. It is.

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention arranges a displacement member that can expand and contract in the direction in which the legs extend, corresponding to the legs of the component inserted into the back side of the board. However, by detecting the movement of this displacement member with a detection means, it is possible to indirectly detect whether or not the parts are securely fixed.

1 Effect] When the foot of the component is inserted from the front side of the board to the back side, the pin is pushed down, and the detection means detects this operation to detect whether the component is fixed to the board.

Embodiment] Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 and 2.

FIG. 1 is a side view of the component fixing device, and FIG. 2 is a front view thereof.

In the figure, the reference numeral I indicates a plate serving as a base, and the reference numeral 2 indicates a fixing bracket. A vertical slider 4 is attached to the fixed bracket 2 via a cross roller guide (linear motion bearing) 3, and a cylinder fixing bracket 5 is fixed to the vertical slider 4. A cylinder mechanism 6 is fixed to this bracket 5, and the tip of this piston rod 6a is fixed to the plate 1 with an adjustment bolt 7 and a nut 8.

A slide table 9 is provided at the upper end of the vertical slider 4.
is provided. Furthermore, cylinder mechanisms 1.0a and 10b are attached to the lower side of the cylinder mechanisms 1.0a and 10b, arranged in front and behind. Furthermore, the vertically movable slider 4 includes a support member 11a,
Bracket 12 equipped with component detection means via flb
, I2 are attached.

Both brackets 12 are L-shaped and have an upper plate part 12a that extends upward from the support members 11a and llb and is horizontally bent inward, and has pin holes 1 in the upper plate parts 12a and 12a.
2b and 12b are provided. This bottle hole L2b,
12b, a component detection pin 13 as a displacement member is always urged upward by a coil spring 14, and
It is attached so that it can be retracted downward. This pin 13 is placed directly below two diagonal legs of the plurality of legs of the component to be detected fixed to the board.

Further, the tip end of the fiber cable 15a of the optical fiber sensor 15 is inserted and fixed to the side of the lowered position of the pin 13 of both brackets 12. This optical fiber sensor 1
5 is set to emit a detection signal by projecting light horizontally toward the lowered position of the pin 13 and receiving the reflected light from the lowered pin 13.

A cross roller guide 1 is mounted on the slide table 9.
6, horizontal sliders 17a and 17b are provided so as to be slidable back and forth. These horizontal sliders 17a
, 17b are fixed with clinch claws 18a, 18b. Also, the horizontal slider 17aS17b and the piston rod 19 of the cylinder mechanism 10a, 10b.
a and 19b are connected by stays 20a and 20b, respectively, and the horizontal sliders 17a and 17b are moved by expansion and contraction of the cylinder mechanisms 10a and 10b.

The above components serve as a leg bending member.

A substrate 21 is fixedly arranged above the device. What is indicated by the reference numeral 22 is the foot 23. , , and is a component fixed to the substrate 21.

Next, the operation of the component fixing device having the above configuration will be explained.

(1) With each moving part in the standby position, move this device to a predetermined position by the drive device (path shown), and then raise the vertical slider 4 by the cylinder mechanism 8 to bring the top end of the device under the board 21. Component 2 is placed on standby, and the component 2 is
2 feet 231. Wait for it to be inserted. At this time, the pin 13 of the component detection mechanism 12 is located at two diagonal positions of the component 22.
It is located directly below the book legs 23a and 23b.

(2) The foot 233 of the part 22 by the head (path shown) into which the part 22 is inserted. is inserted into the board 21.

(3) The inserted legs 23a and 23b push down the pin 13 against the force of the coil spring 14. Then,
The optical fiber sensor 15 detects the lowering of the pin 13 and confirms the insertion of the component 22.

(4) The horizontal movement cylinders 10a and 10b are operated to extend,
Move the horizontal sliders 17a and 17b outward. Then, due to this operation, the horizontal sliders 17a, 17b
Clinch claws 18a and 18b respectively fixed to press and bend inner legs 23c and 23d of part 22 outward.

This fixes the component 22 to the substrate 21.

The component 22 is fixed to the substrate 21 by the above-described sequence of operations, and the optical fiber sensor 15 determines whether or not the fixation is secure.

When no component is inserted, the component detection pin 13 does not descend, and the optical fiber sensor 15 also does not output a detection signal. Therefore, the legs 23a and 23b are not detected, and therefore, a component insertion error can be detected.

In this way, according to the component fixing device of this embodiment, the component 2
2 feet 23. ．． ．． The optical fiber sensor 15 detects the operation of the component detection pin 13 to detect the insertion of the component.
It can be detected that the parts are securely fixed.

Note that the above-mentioned fixing operation is a temporary fixing to ensure that the component 22 is placed at a predetermined position on the board 21 by pressing and bending the legs 23c and 23d, and this arrangement is performed diagonally as described above. It is confirmed whether the two legs 23a and 23b are inserted into the predetermined positions. and,
After this, all legs 23. , .

The parts 22 are bent, bent and brazed, and the parts 22 are completely fixed to the substrate 21.

In this embodiment, an optical fiber sensor is used as the detection means, but other detection means such as a magnetic sensor or a microswitch may be used.

[Effects of the Invention] The component fixing device of the present invention provides the following effects.

(1) Since whether or not the foot is inserted is indirectly detected by the movement of the pin, detection will vary even if the inserted foot is slanted or the surface of the foot is dirty or uneven. Accurate detection is possible without causing

(2) Since the legs of the detected part to be inserted can be detected each time by the movement of the pin, there is no possibility of errors in detecting legs that have already been inserted.

(3) Since the detection means can be installed at a location away from the bottom of the board, the detection means will not come into contact with the legs of a component that has already been inserted, and will also be able to avoid shocks that occur when inserting the legs of a component into the board. Not affected.

(4) Even when parts are fixed at a high density, there is no need to provide a detection means close to the feet, so the parts can be fixed to the board at a high density.

[Brief explanation of drawings]

1 and 2 are views showing one embodiment of the present invention, with FIG. 1 being a side view thereof and FIG. 2 being a front view thereof. 13... Component detection pin (displacement member), 15.
...Optical fiber sensor (detection means), 21...
... Board, 22 ... Parts, 23 ... Legs.

Claims (2)

[Claims] (1) In a component fixing device that fixes the component to the board by bending the legs of the component inserted from the front side to the back side of the board using a leg bending member arranged below the board, on the back side of the board, A displacement member that is extendable and retractable in the extending direction of the foot is arranged in correspondence with the foot of the inserted part, and a detection means for detecting the movement of the displacement member by the foot of the inserted part is provided in the foot bending member. A parts fixing device characterized by: (2) The component fixing device according to claim 1, wherein the detection means uses an optical sensor.