JPS633492A - Automatic inserter of electronic parts - 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 the Invention The present invention relates to an automatic electronic component insertion device for automatically inserting electronic components into printed circuit boards used in various electronic devices.

BACKGROUND OF THE INVENTION Recently, printed circuit boards are used to construct the circuits of various electronic devices, and various electronic components are incorporated into these printed circuit boards to construct the circuits.Lead hissing chip components also have lead wires. The assembly of lead parts is also automated using machines.

Currently, the 8th radial parts are commonly used.
As shown in Figures A9 and C, electronic parts 1 have two lead wires 2 pulled out in parallel, two lead wires 2 are spaced apart, and three lead wires 2 are provided. There are three types.

The basic configuration of such an automatic radial component insertion device is as shown in FIG. 9, in which a lead wire guide block 6 that moves up and down is provided below a printed circuit board 4 that is positioned and held by board guides 3 and 3'. A lead wire guide pin 8 having a recess 7 for receiving a lead wire at the tip that can penetrate through the lead wire insertion holes 6, 6 of the printed circuit board 4 and protrude to the upper surface of the printed circuit board 4 is attached to the lead wire guide block 5. , a funnel-shaped through hole 9 is provided on the printed circuit board 4 from the upper and lower surfaces, and a lead guide plate 10 that can be opened and closed from side to side is provided so as to divide the through hole 9 into two. Insertion chuck 11 for supplying electronic component 1 having
A push rod 12 is arranged on the insertion chuck 11 so as to be able to move up and down. The plate 10 moves to insert the lead wire 2 into the through hole 9, and at the same time the lead wire guide block 5
rises and connects the lead wire guide pins 8, 8 to the printed circuit board 4.
The tips of the lead wire guide pins 8, 8 are inserted into the through holes 9 of the lead guide plate 1o, and the tips of the lead wires 2 of the electronic component 1 are inserted into the lead wire guide pins. In this state, the push rod 12 moves and presses the head of the electronic component 1. In this state, the lead guide plate 1o is separated to the left and right, and the push rod 12 and the lead wire guide pins 8, 8 are inserted into the recesses 7. The push rod 12 and lead wire guide pins 8, 8 move downward while holding the electronic component 1, and the lead wires 2 of the electronic component 1 are inserted into the lead wire insertion holes 6, 6 of the printed circuit board 4. Ta.

Some automatic electronic component insertion devices based on this basic configuration have three lead wires 2.
It is necessary to independently raise the lead wire guide pins 8 corresponding to the above to the upper surface of the printed circuit board 4 one by one to receive all the lead wires 2 with the lead wire guide pins 8.

A device shown in FIG. 10 has been developed to meet these 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 part of the lead wire guide pin 8, and a lead wire guide pin presser 16 is attached to the lower end of the lead wire guide pin 8. This lead wire guide pin 8 is inserted into the groove 1 of the lead wire guide block 6 and held by the pin 18, and there is a lever 19 under the lead wire guide block 5 that presses the lead wire guide pin presser 1e. A cylinder 20 is provided to move the lever 19 up and down, and FIG. 1o shows a state in which the left lever 19 presses the lead wire guide pin presser 16. FIG. 11 shows a state in which the lead wire guide block 5 is raised. Right lead wire guide pin 8
passes through the lead wire insertion hole 6 of the printed circuit board 4 and rises, and the lead wire 2 is received and inserted by the lead wire guide pin 8.
The left lead wire guide pin 8 does not rise because the lead wire guide pin presser 16 is held down by the lever 19. In addition,
10th. In FIG. 11, the lead wire guide pin guide 2 has an inverted funnel-shaped through hole 21 on the bottom surface of the printed circuit board 4.
2 is arranged to guide the lead wire guide pin 8 and ensure that it passes through the lead wire insertion hole 6 of the printed circuit board 4.

Problems to be Solved by the Invention In the above configuration, when the pitch of the lead wire 2 changes or when the lead wire guide pin 8 itself is damaged, when replacing the lead wire guide pin 8, all the lead wire guides must be replaced. It is necessary to remove the pin 18 from the groove 1 of the lead wire guide block 5 to replace the pin 8, and since the lead wire guide pin 8 is long, the replacement work is time-consuming, and in addition, the lead wire guide pin holder is required. 16 is controlled by the lever 19, the structure is complicated and the cost is also extremely disadvantageous.

The present invention is intended to eliminate the above-mentioned conventional drawbacks, and to provide an automatic electronic component 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-mentioned problems, the present invention is capable of vertically moving downwards on a printed circuit board and is constantly biased upward, passing through the lead wire insertion hole of the printed circuit board and inserting electronic components at the tip. A guide pin cartridge equipped with a plurality of lead wire guide pins that hold the tips of the lead wires is arranged, and a lead wire guide that is connected to the lower ends of all or all but one of the lead wire guide pins is arranged in this guide pin cartridge. The lead wire guide mechanism is configured to connect a lead wire guide mechanism consisting of a vertically movable guide pin rod having a plurality of guide pin selection rods that selectively and forcibly pull down the pins.

Effect With the above configuration, replacing the lead wire guide pin can be done by simply replacing the guide pin cartridge on the guide pin loft, and since the lead wire guide pin can be configured to be short, the replacement work can be done easily and quickly. This makes it possible to significantly improve workability and reduce costs.

Example Embodiments of the present invention will be described below with reference to the drawings.

The basic configuration is the same as that explained using FIG. The lead guide plate 10 provided with holes 9 and the board guide 3.3' for positioning and holding the printed circuit board 4 are substantially the same, although some parts are not shown. Here, the specific structure of the lead wire guide mechanism, which is a feature of the present invention, will be explained using FIGS. 1 to 7.

Reference numeral 23 designates a lead wire guide block having a cylindrical portion 24 at the top, a disk portion 25 at the bottom, and the cylindrical portion 24 and the disk portion 25 connected by a prismatic connecting portion 26. A retaining groove 27 is formed in a part of the circumferential surface of the cylindrical portion 24, and a cam plate 29 is brought into contact with a rotating cam follower 28 having one end pivotally supported in the retaining groove 27. A cam 7 lower 31 is fitted into the tip of a lever 3Q which is moved up and down by a cam plate 29.

Further, a guide pin replacement piston 32 and a guide pin replacement cylinder 33 are installed between the cylindrical portion 24 and the disk portion 25 of the lead wire guide block 23 in parallel with the connecting portion 26. Connecting part 2
Guide pin selection cylinder 3 that moves up and down using 6 as a guide
4 is fixed. This guide pin selection cylinder 34
The lower ends of two guide pin selection rods 354 and 35b are incorporated into the guide pin selection rod 35.

36b enters into a cylindrical guide pin rod 36 whose lower end is built into the center of the cylindrical portion 24 and extends upward. Also, this guide pin selection rod 35a.

A rotation stopper 37 guided by the connecting part 26 is provided at the bottom of 3sb.
are fixed, and furthermore, the guide pin selection port/end 35a,
The upper end of the guide pin rod 35 is located near the upper end of the guide pin rod 36, and a coupling groove 38 having a large diameter portion is provided at the lower end.

A guide pin cartridge 39 is coupled to the upper end of the guide pin rod 36 . This guide pin cartridge 39 is made of a cylindrical body having an upper and lower surface, and this guide pin cartridge 39 has three lead wire guide pins aoa.
, a□b, aoc are incorporated so that their upper and lower ends protrude from the upper and lower surfaces, and these lead wires Kitetopia 4oa, aob
, 40C is formed with a recess for receiving the lead wire 2 of the electronic component 1, and a stopper flange 41 for spring retention is formed in the intermediate portion located inside the guide pin cartridge 39, and this stopper flange 41 and the guide pin cartridge 39
The lead wire guide pins 401 to 401 are connected to the bottom of the
f Coil springs 42 that are always biased upward are fitted into the lead wire guide pins 40 to 40C, respectively. Also,
At the lower ends of the lead wire guide pins 40b and aoc, an engaging bulge 43 is provided which fits into the coupling groove 38 of the guide pin selection rod 35, 351) and is coupled in the vertical direction.

The guide pin cartridge 39 has an installation groove 44 for installing the lead wire guide pins 40a to 400 from the side surface excluding the ceiling surface to the bottom surface.

In addition, when the built-in groove 44 is not provided, a structure may be adopted in which the ceiling plate or the bottom plate is press-fitted into the main body.

With the above configuration, when the guide pin selection cylinder 34 moves the guide pin selection iron 35a downward, the lead wire guide pin 40b moves to the coil spring 4 as shown in FIG.
2 is elastically contracted and moved downward, and in this state, when the lever 3o is moved upward by the cam plate 29, the lead wire guide block 23 is moved upward, the guide pin rod 36 and the guide pin cartridge 39 are also moved upward, and this guide pin Cartridge 39
Lead wire guide pin 40 that protrudes greatly from the top surface of
, 400 pass through the lead wire insertion hole 6.6 of the printed circuit board 4 and the electronic component 1 is supplied by the electronic component supply mechanism.
The electronic component 1 is inserted into the printed circuit board 4 by holding the lower end of the lead wire 2 and moving it downward while being clamped together with the push rod 12.

Further, if the guide pin selection rod 36b 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 40 & 40C.

Next, when the lead wire guide pins 40a to 400 are damaged or deformed and become unusable, the lead wire guide pins 40a to 400
It is necessary to replace a to 4QC, but in that case, do not operate the guide pin selection cylinder 34, but operate the guide pin replacement cylinder 33 to replace the lead wire guide block 23.
The guide pin selection cylinder 34 is moved upward. As a result of this operation, the guide pin selection rods 36L and 35b move upward as shown in FIG.
&, the tip of 35b projects upward from the upper end of the guide pin rod 36, as shown in FIG. In this state, as shown in FIG. 6, the lead wire guide pins aob and
The aoc is removed from the guide pin selection rods 35a and 35b, a new guide pin cartridge 39 is installed, and the guide pin replacement cylinder 33 is operated to return to its original position.
It will be connected to the tip of 6.

Note that if the lead wire insertion holes 6, 6 of the printed circuit board 4 are not formed at a specified pitch as shown in FIG. It is configured such that the coil spring 42 does not protrude from the top surface of the printed circuit board 4, but escapes by being elastically compressed.

In addition, in the embodiment, three lead wire guide pins 4 are used.
Two guide pin selection rods 35 for 0a to 40C
2L and 35b have been described, but the number of lead wire guide pins can be increased further, and the number of guide pin selection ports and ports corresponding to all of the lead wire guide pins may be provided. The line guide pin and the guide pin selection rod may be connected by screw connection instead of using the connection groove 38.

Effects of the Invention Since the electronic component automatic insertion device of the present invention is configured as described above, lead wire guide pins can be replaced easily and quickly, greatly improving work efficiency and increasing operating efficiency. In addition, the lead wire guide pin to be replaced can be shortened, which is extremely advantageous in terms of cost, and is of great industrial value.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the main parts of an embodiment of the automatic electronic component insertion device of the present invention, FIGS. 2 to 4 are sectional views explaining the same operation, and FIGS. 5 and 6 are lead Figure 7 is a sectional view of the main parts when replacing the wire guide pin, Figure 8 is a front view of the radial type electronic components that are automatically inserted, Figure 9 is the electronic 10 and 11 are cross-sectional views showing the operation and structure of a conventional automatic component insertion device. 1...Electronic component, 2...Lead wire, 4
...Printed circuit board, 6...Lead wire insertion hole, 11...Insertion chuck, 23...
・Lead wire guide block, 29...cam plate,
3o... Lever, 32... Piston for guide pin replacement, 33... Cylinder for guide pin replacement, 34... Guide pin selection cylinder, s
sa, 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...Engaging bulge, 44...
...Built-in groove. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 7
Figure 8 (A) (III)
(1) s) Figure 9

Claims (1)

[Claims] An electronic component supply mechanism that supplies electronic components having lead wires to a predetermined position with the lead wires facing down on a printed circuit board that has a lead wire insertion hole into which the lead wires of electronic components that are positioned and held are inserted. is provided with a plurality of lead wire guide pins that are movable up and down below the printed circuit board, are always urged upward, penetrate through the lead wire insertion holes of the printed circuit board, and hold the tips of the lead wires of the electronic components at their tips. A guide pin cartridge is disposed, and a plurality of guide pin selection rods are connected to the guide pin cartridge to the lower ends of all or all but one of the lead wire guide pins and selectively and forcibly pull down the lead wire guide pins. An automatic electronic component insertion device comprising a lead wire guide mechanism connected to a vertically movable guide pin rod having a vertically movable guide pin rod.