JPH0246078Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a component insertion holder used to hold electronic components when component leads extending in the same direction are automatically inserted into a printed circuit board.

2. Description of the Related Art Automatic mounting of a radial lead type electronic component onto a printed circuit board is generally performed by holding the component at three points: the component body and two lead wires extending in the same direction. For example, an automatic insertion machine for electronic components is designed so that multiple types of radial lead type electronic components can be inserted into a printed circuit board with a single machine.
This will be explained with reference to FIG.

In FIGS. 6 and 7, reference numeral 1 denotes a radial lead type electronic component, and the drawing shows a transistor in which three lead wires 3 are led out in the same direction from a rectangular component body 2. 4 is fixed position P for inserting electronic components
The electronic component 1 is a printed circuit board arranged at a component insertion position P, and has a through hole 5 through which three lead wires 3 of an electronic component 1 are inserted. Reference numeral 6 indicates two guide pins arranged vertically movably below the printed circuit board 4 in a fixed position P, and 7 indicates a guide pin 1 arranged above the printed circuit board 4 in a fixed position P in a vertically movable manner.
8 is a component chuck for feeding the electronic component 1 between the component insertion holder 7 at the upper limit position and the printed circuit board 4 with the lead wire 3 facing downward; 9 is the component chuck 8 at the fixed position P; This is a lead guide with a two-part structure that is inserted between the printed circuit boards 4 as appropriate.

The two guide pins 6 are arranged to move up and down through two on both sides of the three through holes 5 at a fixed position P of the printed circuit board 4, and their upper ends are arranged so that the lower ends of the lead wires 3 can be easily inserted into the discharge holes. It has been dented due to processing. The component insertion holder 7 is made of metal and has a flat rectangular pressing surface 10 and a pressing surface 1.
Groove 1 with a V-shaped cross section formed across the center of 0
1 and a square hole 12 formed in the center of the groove 11 excluding both ends thereof, and the pressing surface 10 and the V
The groove 11 is designed to have a size and shape that can hold the head of the component body 2 of the electronic component 1.

The component chuck 8 is an open/close type that supplies the electronic component 1 from the outside to a fixed position P by holding the component body 2 or the lead wire 3, and the electronic component 1 is, for example, a large number of similar components taped together (not shown). They are separated one by one from the taped parts and supplied to the parts chuck 8 via another chuck (not shown). The lead guide 9 consists of a pair of guide blocks 9a and 9b that open and close as shown in FIG. It has a guide groove 13 for guiding the insertion, and when each guide block 9a, 9b is closed, the opposing guide grooves 13 match to form a lead wire insertion guide hole 13'.

When the component insertion position of one printed circuit board 4 is carried into the fixed position P, this fixed position P
A component chuck 8 supplies one electronic component 1 above, and a lead guide 9 closes at a fixed position below the electronic component 1. In this state, the two guide pins 6 pass through the through holes 5, rise, and are inserted into the guide holes 13' from below and positioned. Immediately after that,
As shown in FIG. 8, the component chuck 8 is lowered, the lead wire 3 of the electronic component 1 is inserted from above into the guide hole 13' of the lead guide 9, and enters the recess at the tip of the guide pin 6, and at the same time the component is inserted and held. The tool 7 descends and the pressing surface 10 comes into contact with the upper surface of the component body 2 of the electronic component 1. Next, as shown in FIG. 9, the component chuck 8 and lead guide 9 are opened and separated from the electronic component 1, and the electronic component 1 is held at three points by the component insertion holder 7 and the two guide pins 6. The guide pin 6 and the component insertion holder 7 are simultaneously lowered at the same speed, and the lead wire 3 is guided by the guide pin 6 and inserted into the corresponding through hole 5, as shown in FIG.

When the automatic insertion of one electronic component 1 is completed, the component insertion holder 7 rises to the original position, the printed circuit board 4 moves intermittently, and the next component insertion position is carried to the fixed position P, and the component chuck 8 grips the next electronic component of the same type or a different type and supplies it to a fixed position above the fixed position P, and the same operation described above is repeated.

Problems that the invention aims to solve Radial-lead type electronic components that are automatically inserted into a single printed circuit board include not only the three-lead transistors mentioned above, but also various other types such as two-lead disk capacitors and vertical resistors. The size and shape of the component body vary depending on the type, and the component insertion holder used when automatically inserting electronic components is made to accurately hold and press many types of component bodies. ing. That is, the above-mentioned component insertion holder 7 holds the rectangular component body 2 with the flat pressing surface 10, and holds the disc-shaped component body 2' of the disc capacitor 1' shown in FIG. Fit it into the V-shaped groove 11 of the pressing surface 10 and hold it, and then fit one lead wire 3' bent into the square hole 12 to the vertical resistor 1'' shown in FIG. It is held by a V-shaped groove 11.

Incidentally, when the component insertion holder 7 holds the component body by fitting it into the V-shaped groove 11, it holds the component relatively stably, but when holding a particularly rectangular component body with the flat pressing surface 10, the component If the main body was slightly misaligned, it would get stuck in the V-shaped groove 11 and could not be held accurately, leading to errors in component insertion. For example, for the rectangular component body 2 of the electronic component 1, the component insertion holder 7 has pressing surfaces 10 on both sides of the V-shaped groove 11.
Both sides of the upper surface of the component body 2 are held by the
If the component body 2 is slightly misaligned in the thickness direction, one end of the upper surface of the component body 2 will enter the V-shaped groove 11, causing the component body 2 to be held tilted, as shown in FIG. It was hot.

In addition, when the component insertion holder 7 is used several times, debris such as peeled off coatings of electronic components accumulates in the square hole 12 and the square hole 12 becomes clogged with debris.
There was a problem that the vertical resistor 1'' shown in Fig. 4 could not be held accurately and could not withstand long-term use, and an improvement measure was desired.

Means for Solving the Problems The present invention has been made in view of the above-mentioned problems of the component insertion holder in automatic electronic component insertion machines. A flat surface flush with the pressing surface is formed by embedding an elastic body in both ends of a groove that crosses the center of the pressing surface that directly holds and presses the main body, and the raised square hole and It is equipped with a hole that communicates with the outside.

Function The flat portions at both ends of the groove have enough width and spacing to allow the remaining groove to hold the component body of a disk capacitor, etc., and that both ends of the top surface of the rectangular component body such as a transistor touch the flat portion. It is formed by
This reliably prevents a holding error in which the rectangular component body comes into contact with the flat surface and enters the groove when the rectangular component body is held, thereby further improving the success rate of automatic component insertion.

Furthermore, since there is a hole that communicates with the outside, even if debris gets in, it will be pushed out and come out naturally, making it possible to use it for a long time. Also, even if it gets clogged, it is easy to clean because there is a hole.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

In the component insertion holder 14 shown in FIGS. 1 to 3, 15 is a flat pressing surface on the lower surface, and 16 is a pressing surface 1.
A groove with a V-shaped cross section formed across the center of 5;
Reference numeral 17 denotes an open square hole formed at the bottom of the groove 16, which has the same size and shape as the conventional component insertion holder 7. The difference is that a triangular prism-shaped elastic body 18 made of urethane rubber or the like is embedded and fixed in both ends of the V-shaped groove 16 to form a flat part 19 flush with the pressing surface 15 at both ends of the V-shaped groove 16. For example, two holes 20 for discharging debris are formed at two locations on the top surface of the hole 17, penetrating to the outer surface.

The above-mentioned component insertion holder 14 is used in the electronic component automatic insertion machine shown in FIGS. It is done as shown in the figure. That is, the distance between the flat parts 19 at both ends of the groove 16
By setting L ₁ to be slightly smaller than the length L ₂ of the upper surface of the component body 2, the component body 2 is held with the upper surface peripheral portion in contact with the pressing surface 15 and the flat portion 19. Therefore, even if the component body 2 is slightly misaligned, both ends of the top surface will come into contact with the flat parts 19 and 15, so there is no worry that the component body 2 will get into the V-shaped groove 16, and as a result, the electronic component 1 is always stable. The component is held in the correct posture by the component insertion holder 14 and the guide pin 6, and automatically inserted into the printed circuit board.

Further, the electronic components 1' and 1'' as shown in FIGS. 13 and 14 are held in the V-shaped groove 16, and the distance between the flat parts 19 at both ends is adjusted to enable such holding.
L ₁ is set.

Further, when the component insertion holder 14 is used several times, debris accumulates in the square hole 17, and when this debris accumulates to a certain extent, new debris enters and old debris is pushed out from the loop hole 20. Therefore, there is no need to worry about the square hole 17 being clogged with debris, allowing long-term use.

Effects of the invention According to the invention, errors in holding electronic components held by the flat pressing surface of the component insertion holder are reduced, and the automatic insertion rate of electronic components into printed circuit boards is further improved, increasing reliability. We can provide automatic electronic component insertion machines with high quality. Moreover, since the present invention can be obtained by simply adding a simple operation such as fixing rubber members to both ends of the groove of the conventional product, it is easy to implement and has great practical value.

[Brief explanation of the drawing]

1 to 3 are a front view, a side view, and a bottom view showing an embodiment of the present invention. FIGS. 4 and 5 are a front view and a side view showing an example of how the component insertion holder shown in FIG. 1 is used. Figure 6 is a front view of the main parts of a conventional general electronic component automatic insertion machine, and Figures 7 to 10
The figure is a side view showing various operating states of the electronic component automatic insertion machine shown in Fig. 6, Fig. 11 is a side view for explaining an example of a failure during the operation of Fig. 9, and Fig. 12 is a side view of the electronic component automatic insertion machine shown in
Top view of the lead guide when it is open in Figure 13
The figure and FIG. 14 are front views showing an example of holding two types of electronic components by the component insertion holder in FIG. 6. 1, 1', 1''...electronic parts, 2, 2', 2''...
Component body, 3, 3'...Lead wire, 4...Printed circuit board, 5...Through hole, 14...Component insertion holder, 15...Press surface, 16...V-shaped groove, 19
...Plane part.

Claims (1)

[Scope of utility model registration request] A component insertion holder that holds the main body of a radial lead type electronic component and automatically inserts the lead wire into a through hole of a printed circuit board, the component insertion holder having a flat pressing surface and a V-shape across the pressing surface. The V-shaped groove has a flat square hole connected to the central part of the V-shaped groove, and a flat part forming a part of the pressing surface formed by embedding an elastic body in both ends of the V-shaped groove. A component insertion device characterized by having an open square hole and a hole communicating with the outside.