JPH0685479B2 - Electronic component automatic insertion device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic component automatic insertion device for automatically inserting electronic components into a printed circuit board used in various electronic devices.

2. Description of the Related Art Recently, printed circuit boards have been used to form circuits for various electronic devices, and various electronic components are incorporated into the printed circuit boards to form circuits. Leadless chip components also have lead wires. Incorporation of lead parts is also automated using machines.

The 8th radial component that is currently in widespread use
As shown in FIGS. 1A, 1B and 1C, two lead wires 2 are drawn out from the electronic component 1 in parallel, two lead wires 2 are spaced apart from each other, and three lead wires 2 are provided. There are three types.

As shown in FIG. 9, the basic construction of such an automatic insertion device for radial parts is such that a vertically movable lead wire guide block 5 is provided below a printed circuit board 4 positioned and held by the board guides 3, 3 '. A lead wire guide pin 8 having a recess 7 for receiving a lead wire is attached to a tip of the lead wire guide block 5 which can penetrate the lead wire insertion holes 6, 6 of the printed board 4 and project onto the upper surface of the printed board 4. ,
The printed board 4 has a funnel-shaped through hole 9 from the upper and lower surfaces,
A lead guide plate 10 that can be opened and closed to the left and right so as to divide the through hole 9 into two is provided, and an insertion chuck 11 that supplies the electronic component 1 having the lead wire 2 is provided on the lead guide plate 10. The push rod 12 is arranged on the upper side so as to be vertically movable.
When it is supplied to the printed circuit board 4 with the lead wire downward, the lead guide plate 10 moves so as to insert the lead wire 2 into the through hole 9, and at the same time, the lead wire guide block 5 rises and the lead wire guide pin 8, 8 is inserted into the lead wire insertion holes 6, 6 of the printed circuit board 4, the tips of the lead wire guide pins 8, 8 enter the through holes 9 of the lead guide plate 10, and the tips of the lead wires 2 of the electronic component 1 are leaded. The wire guide pins 8 and 8 are fitted into the recesses 7, and in this state the push rod 12 moves to hold the head of the electronic component 1. In this state, the lead guide plate 10 is separated left and right, and the push rod 12 and the lead wire guide pin 8 Push rod 12 while holding electronic component 1 with
Then, the lead wire guide pins 8 and 8 are moved downward to insert the lead wire 2 of the electronic component 1 into the lead wire insertion holes 6 and 6 of the printed circuit board 4.

Some automatic insertion devices for electronic components based on such a basic configuration have three lead wires 2.
It is necessary to individually raise the lead wire guide pins 8 corresponding to the above to the upper surface of the printed circuit board 4 and receive all the lead wires 2 by the lead wire guide pins 8.

The one shown in FIG. 10 has been conventionally developed as one that satisfies such requirements. That is, a weak spring 13 and a spring receiver 14 are passed through the lead wire guide pin 8, a stopper 15 is fixed to the upper middle portion of the lead wire guide pin 8, and a lead wire guide pin retainer 16 is attached to the lower end of the lead wire guide pin 8. The lead wire guide pin 8 is fixed, inserted into the groove 17 of the lead wire guide block 5, held by the pin 18, and there is a lever 19 below the lead wire guide block 5 for pressing the lead wire guide pin retainer 16. A cylinder 20 for moving the lever 19 up and down is provided, and FIG. 10 shows a state in which the left lever 19 holds the lead wire guide pin retainer 16. FIG. 11 shows a state in which the lead wire guide block 5 is raised. The lead wire guide pin 8 on the right side passes through the lead wire insertion hole 6 of the printed circuit board 4 and rises to receive and insert the lead wire 2 with the lead wire guide pin 8, and the lead wire guide pin 8 on the left side is a lever 19. It does not rise because the lead wire guide pin retainer 16 is being retained. In FIGS. 10 and 11, a lead wire guide pin guide 22 having an inverted funnel-shaped through hole 21 is arranged on the lower surface of the printed board 4 to guide the lead wire guide pin 8 and to surely fix the printed board 4. The lead wire insertion hole 6 is made to penetrate.

Problems to be Solved by the Invention In the above configuration, when the pitch of the lead wires 2 changes or when the lead wire guide pins 8 themselves are damaged, when replacing the lead wire guide pins 8, all the lead wire guides are replaced. It is necessary to replace the pin 8 by removing the pin 18 from the groove 17 of the lead wire guide block 5, and since the lead wire guide pin 8 is long, the replacement work is troublesome and the lead wire guide pin retainer 16 is used as a lever. Since it is controlled by 19, the configuration is complicated and the cost is significantly disadvantageous.

SUMMARY OF THE INVENTION The present invention eliminates the above-mentioned conventional drawbacks, and an object of the present invention is to provide an automatic electronic device insertion device that allows easy replacement of lead wire guide pins and is inexpensive.

Means for Solving the Problems In order to solve the above problems, the present invention provides a lead wire on a printed circuit board having a lead wire insertion hole for inserting a lead wire of an electronic component which is positioned by printing. An electronic component supply mechanism is provided for supplying the electronic component to a predetermined position with the lead wire on the lower side, and the lead wire of the electronic component is penetrated through the lead wire insertion hole of the printed board at the lower portion of the printed board. Guide pin cartridge having a plurality of lead wire guide pins for holding the tip of the guide pin and always urged upward, and all or one of the lower ends of the lead wire guide pins of the guide pin cartridge To the guide pin selection rod, a guide pin selection cylinder that pulls down the guide pin selection rod selectively and forcibly, and a guide pin selection rod. In this configuration, the lead wire guide mechanism section, which is a guide pin replacement cylinder forcibly pulling up the selection cylinder, is connected.

Operation With the above configuration, the lead wire guide pin can be replaced only by replacing the guide pin cartridge that is detachably connected to the guide pin rod. Is extremely simple and quick, and it is possible to significantly improve workability and facility operation rate and reduce costs.

Embodiments Embodiments of the present invention will be described below with reference to the drawings. As the basic structure, the one described with reference to FIG. 9 is adopted. The push rod 12, the insertion chuck 11 for supplying the electronic component 1 to the predetermined position with the lead wire 2 on the lower side, and the funnel-shaped transparent member from the upper and lower surfaces. The lead guide plate 10 having the holes 9 and the substrate guides 3 and 3'for positioning and holding the printed circuit board 4 are substantially the same although some parts are not shown. Here, a specific configuration of the lead wire guide mechanism, which is a feature of the present invention, will be described with reference to FIGS. 1 to 7.

Reference numeral 23 denotes a column portion 24 on the upper side, a disc portion 25 on the lower portion, and a lead wire guide block in which the column portion 24 and the disc portion 25 are connected by a prismatic connecting portion 26. An engaging groove 27 is formed in a part of the peripheral surface of 24, and the engaging groove 27 is formed.
27 is a cam follower with one end pivotally attached and attached to the middle part 28
A cam follower 31 attached to the tip of a lever 30 that moves up and down by this cam plate 29 is engaged.

Further, between the cylindrical portion 24 and the disc portion 25 of the lead wire guide block 23, the guide pin replacement piston is provided in parallel with the connecting portion 26.
32 and a guide pin replacement cylinder 33 are incorporated, and a guide pin selection cylinder 34 that moves up and down with the connecting portion 26 as a guide is fixed to the guide pin replacement cylinder 33. The lower ends of two guide pin selection rods 35a, 35b are incorporated in the guide pin selection cylinder 34, and the guide pin selection rods 35a, 35b are cylindrical guide pin rods in which the lower ends are incorporated in the center of the cylindrical portion 24. It extends into 36 and extends upward. A rotation stopper 37 guided by the connecting portion 26 is fixed to the lower part of the guide pin selection rods 35a and 35b, and the upper ends of the guide pin selection rods 35a and 35b are located near the upper end of the guide pin rod 36 described above. In addition, an engaging groove 38 having a large diameter portion is provided at the lower end.

A guide pin cartridge 39 is detachably connected to the upper end of the guide pin rod 36. The guide pin cartridge 39 is composed of a cylindrical body having upper and lower surfaces. The guide pin cartridge 39 includes three lead wire guide pins 40a,
40b, 40c are assembled so that the upper and lower ends project upward and downward,
A recess for receiving the lead wire 2 of the electronic component 1 is formed on the upper end surface of the lead wire guide pins 40a, 40b, 40c, and a spring stopper stopper collar 41 is formed in an intermediate portion located in the guide pin cartridge 39. Between the stopper collar 41 and the bottom of the guide pin cartridge 39.
Coil springs 42 for constantly upwardly biasing a to 40c are fitted in the lead wire guide pins 41a to 40c, respectively. Further, at the lower ends of the lead wire guide pins 40b, 40c, engaging bulging portions 43 are provided which are fitted in the coupling grooves 38 of the guide pin selection rods 35a, 35b and are coupled in the vertical direction.

The guide pin cartridge 39 is formed with an assembling groove 44 for assembling the lead wire guide pins 40a to 40c from the side surface except the ceiling surface to the bottom surface.

When the mounting groove 44 is not provided, the ceiling face plate or the bottom face plate may be press-fitted and coupled to the main body.

When the guide pin selection cylinder 35 is moved downward by the guide pin selection cylinder 34 with the above-described configuration, the lead wire guide pin 40b elastically contracts the coil spring 42 and moves downward as shown in FIG. When the lever 30 moves upward by the cam plate 29, the lead wire guide block 23 moves upward, and the guide pin rod 36 and the guide pin cartridge 39 also move upward.
The lead wire guide pins 40a and 40c which largely project on the upper surface of the guide pin cartridge 39 penetrate through the lead wire insertion holes 6 and 6 of the printed circuit board 4 and are supplied by an electronic component supply mechanism section (not shown). While holding the lower end of the lead wire 2 of the component 1 and holding it with the push rod 12, the electronic component 1 is inserted into the printed board 4 by moving downward.

Further, if the guide pin selection rod 35b is moved downward by the guide pin selection cylinder 34 as shown in FIG. 3, the lead wire 2 of the electronic component 1 can be held by the lead wire guide pins 40a and 40b.

Next, when the lead wire guide pins 40a to 40c become damaged or deformed and cannot be used, it is necessary to replace the lead wire guide pins 40a to 40c.At that time, the guide pin selection cylinder 34 is not operated and the guide pin is not operated. The replacement cylinder 33 is operated to move the guide pin selection cylinder 34 upward with respect to the lead wire guide block 23. This operation causes the guide pin selection rods 35a, 35b to move upward as shown in FIG. 4, and the tips of the guide pin selection rods 35a, 35b project upward from the upper end of the guide pin rod 36 as shown in FIG. . In this state, as shown in FIG. 6, guide pin selection rods 35a, 35
By shifting the guide pin cartridge 39 horizontally along the coupling groove 38 of b, the lead wire guide pins 40b, 40c
Is removed from the guide pin selection rods 35a, 35b, a new guide pin cartridge 39 is installed, and the guide pin replacement cylinder 33 is operated to return to its original position, the guide pin cartridge 39 is joined to the tip of the guide pin rod 36. Will be.

As shown in FIG. 7, the lead wire insertion hole of the printed circuit board 4
When 6, 6 are not formed at the specified pitch, even if the lead wire guide pin 40c moves upward, the lead wire guide pin 40c does not hit the lower surface of the printed circuit board 4 and does not project to the upper surface of the printed circuit board 4, and the coil spring 42 springs. It is configured to shrink and escape.

In the embodiment, the three lead wire guide pins 40
Although the two guide pin selection rods 35a and 35b are provided for a to 40c, the number of lead wire guide pins can be increased. The number corresponding to all may be provided, and the lead wire guide pin and the guide pin selection rod may be coupled by screw coupling instead of using the coupling groove 38.

EFFECTS OF THE INVENTION Since the electronic component automatic insertion device of the present invention is configured as described above, it becomes possible to replace the lead wire guide pin extremely easily and quickly, and it is possible to significantly improve the workability.
In addition to improving the operating rate of the equipment, the lead wire guide pin to be replaced can be made short, which simplifies the structure of the lead wire guide mechanism and reduces the number of parts, which is extremely advantageous in terms of cost. , Of great industrial value.

[Brief description of drawings]

FIG. 1 is a perspective view of an essential part showing an embodiment of an electronic component automatic insertion device of the present invention, FIGS. 2 to 4 are sectional views for explaining the same operation, and FIGS. 5 and 6 are leads. FIG. 7 is a cross-sectional view of another operation when the wire guide pin is replaced, FIG. 7 is a sectional view of another operation, FIGS. FIG. 10 and FIG. 11 are schematic configuration diagrams showing the basic configuration of the automatic component inserting apparatus, and FIG. 11 and FIG. 1 ... Electronic parts, 2 ... Lead wire, 4 ... Printed circuit board, 6 ... Lead wire insertion hole, 11 ... Insertion chuck, 23 ...
… Lead wire guide block, 29 …… Cam plate, 30 …… Lever, 32 …… Guide pin replacement piston, 33 …… Guide pin replacement cylinder, 34 …… Guide pin selection cylinder, 35
a, 35b …… Guide pin selection rod, 36 …… Guide pin rod, 38 …… Coupling groove, 39 …… Guide pin cartridge,
40a, 40b, 40c ...... Lead wire guide pin, 42 ...... Coil spring, 43 ...... Engagement bulge, 44 ...... Assembly groove.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takayoshi Kyotani 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) Reference JP-A-59-227198 (JP, A)

Claims (1)

[Claims] 1. An electronic component having a lead wire is supplied at a predetermined position with the lead wire downward on a printed circuit board having a lead wire insertion hole into which a lead wire of an electronic component to be positioned and held is inserted. An electronic component supply mechanism is provided, and a plurality of lead wire guide pins that pass through the lead wire insertion hole of the printed board and hold the tip of the lead wire of the electronic component at the lower end of the printed board can be moved up and down. And a guide pin cartridge that is always biased upward, a lead pin of this guide pin cartridge, a guide pin selection rod that is detachably coupled to all or all the lower ends of the guide pins, and this guide pin. Guide pin selection cylinder that selectively and forcibly pulls down the selection rod, and guide pin replacement cylinder that forcibly pulls up this guide pin selection cylinder Ranaru automatic insertion device of an electronic component formed by connecting a lead wire guide mechanism.