JPH0252878B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method and apparatus for inserting a conductive pin into a predetermined hole formed in a printed wiring board.
In particular, the present invention relates to a method and apparatus for bending and cutting a long metal wire at regular length intervals, and inserting and implanting pins formed into single pieces.

[Conventional technology]

A long metal wire with a uniform cross section that can be easily wound into a coil is made with cuts at regular length intervals and cut at each cut to form a single pin. A technique for inserting and planting the wire into a predetermined hole of a printed wiring board is provided in Japanese Patent Application Laid-Open No. 109284/1984.

In this conventional technology, a supply strip SS made of a continuous length of conductive material formed by preformed terminal pins is housed in a coil shape, and cutout portions are formed at regular intervals in the supply strip SS. do. Then, this supply strip SS is fed downward by the length of the notch (terminal pin) using the feed finger 80, the shear plunger 60 is operated forward from the side of the supply strip SS, and the shear blade 114 is used to pin the front terminal pin. Cutting LP (shearing)
do.

The cut pin LP is held in place and the lowering of the block 38 inserts the pin LP into an opening 70 in a workpiece 72, such as a printed circuit board.

[Problem that the invention seeks to solve]

In the above-mentioned conventional technology, the supply strip SS is sheared (cut) at the notch portion by the shear blade 114 to form the terminal pin LP. If the feeding lengths of the supply strip SS are different, the supply strip SS will be sheared at a location other than the notch portion, and the formed pin will be a defective product and cannot be used.

Furthermore, the entire structure, including a shearing mechanism for the supply strip SS and a mechanism for holding and sending the formed pins downward, is complicated and requires a large number of expensive parts. Furthermore, in recent years, there has been an increasing demand for technology to insert a plurality of pins at the same time, but the above-mentioned conventional technology has drawbacks that cannot be easily addressed.

[Means for solving problems]

In view of the above-mentioned prior art, the present invention can continuously perform a series of steps in which pins are cut from a long metal wire having a uniform cross section and inserted into a printed wiring board. An object of the present invention is to provide a method and apparatus.

Another object of the present invention is to provide a method and apparatus that can always bend and cut a metal wire at cuts formed at regular intervals.

In order to achieve the above purpose, a holding member is provided which can move up and down on a vertical plane and whose vertical position can be reversed during movement, and this holding member is provided with a hole that can hold a conductive pin. A long metal wire with cuts formed (hereinafter simply referred to as "continuous pin")
The pin at the bottom of the pin is held in the hole, bent and cut from the cut, and the formed single pin is held as it is so that it can be inserted into a predetermined hole in the printed wiring board.

The present invention will be explained below with reference to the drawings.

In FIGS. 1 and 2, 1 is a holding member;
A holding hole 2 is formed in one end of this holding member 1 so as to protrude therefrom so that a pin can be held therein.

The center part of the holding member 1 installed in contact with the front side surface of the base 3 is rotatably attached to one end of the link 4 with a shaft 5.
The other end of the link 4 is rotatably connected to a fixed shaft 7 that is movable up and down along a longitudinal hole 6 formed in the base 3.

A pinion gear 8 is integrally provided on the holding member 1 on the same axis, and a rack gear 9 is formed on the side surface of the base 3 at a position corresponding to the pinion gear 8.

Above the base 3, a reversing plate 11 having a fitting groove 10 of the holding member 1 is rotatably connected to a shaft 12 in a swinging state at the top dead center position of the holding member 1 when holding the pin. .

In the figure, reference numeral 13 denotes a regulating spring, one end of which is wound around and fixed to the fixed shaft 7, and the other end is connected to a pin 14 provided on the link 4. And this spring 1
3 always presses the link 4 to the left around the shaft 7, and therefore the holding member 1 is pressed against the base 3.
It has a habit of coming into contact with the side of the

Further, the continuous pin 15 shown enlarged in FIG.
This is a conventionally known method in which cuts 16 are formed at regular intervals. This continuous pin 15 has the length between each cut 16 as a single conductive pin, and the continuous pin 15 wound into a roll can be fed by an appropriate mechanism by the length interval of the cuts 16. When the continuous pin 15 is advanced by a distance of 16 cuts, the cut 16a located at the bottom corresponds to the center of the shaft 12 that rotatably supports the reversing plate 11.

[Effect]

In the above configuration, for example, the position shown in FIG. 1 is the fixed location of the holding member 1 when not in use. At this time, the holding hole 2 of the holding member 1 faces downward.

When the fixed shaft 7 is raised along the longitudinal hole 6, the holding member 1 also starts to rise via the link 4 at the same time. When the pinion gear 8 engages with the rack gear 9 during the ascent, the holding member 1 rotates in the opposite direction about the shaft 5, as shown in FIG. At this time, since an inversion groove 17 is formed on the side surface of the base 3,
The rear part of the holding member 1 does not come into contact with the side surface.

After the holding member 1 is reversed, it further rises with the clamping hole 2 facing upward, and while rising, the holding member 1 touches the reversing plate 11.
At the same time, the lowermost pin 15a of the continuous pin 15 is gradually inserted into the holding hole 2 (solid line position in FIG. 5).

After the pin 15a is completely inserted into the clamping hole 2, leaving only a portion, if the fixed shaft 7 is further raised along the vertical hole 6, the reversing plate 11 can be moved into the shaft with the holding member 1 inserted. 12, and thus around the notch 16a. In this case, since the holding member 1 is connected to the link 4 by the shaft 5, the rotating direction of the reversing plate 11 is always restricted to a constant direction.

Since the holding member 1 also rotates according to the reversing plate 11, the continuous pin 15 is bent at the lowermost cut 16a, and when the holding member 1 reaches the top dead center position shown by the chain line in FIG. After being cut, a single conductive pin 15a is held within the holding hole 2.

If the clamping hole 2 includes, for example, a pressure spring, and the pin is clamped by the spring pressure, the pin will not come out and fall even if the clamping hole 2 is turned downward.

After cutting the pin as described above, when the fixed shaft 7 is lowered along the vertical hole 6, the holding member 1 is lowered by an operation opposite to the above-mentioned upward movement, and is reversed midway through so that the clamping hole 2 faces downward. shall be. And holding member 1
By vertically moving the pin 15a downward from the fixed position, the pin 15a can be inserted and planted in a predetermined hole of the printed wiring board 18, as shown in FIG.

By continuously performing the raising and lowering operations of the holding member 1, a plurality of pins 15a can be successively inserted into the substrate 18.

A conventionally known mechanism for feeding the continuous pins 15 at intervals of 16 cuts can be used, but it is convenient if the pins 15 are fed in conjunction with the lowering of the holding member 1 that holds the cut single pin. It is.

In addition, although the case where a pinion and a rack are used as a mechanism for reversing the holding member 1 has been explained,
Of course, the present invention is not limited to this, and other appropriate mechanisms may be used.

〔Example〕

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

In this embodiment, the same parts as those described above are given the same reference numerals.

FIG. 7 shows a state in which the fixed shaft 7 is protruded from the sliding member 19.

The sliding member 19 is movable up and down in a space 20 formed at the rear of the base 3.

By doing this, the connecting member 21 is attached to the sliding member 19, and the sliding member 1 is manually operated.
9 may be moved, for example, by connecting a handle to the connecting member 21, and when mechanically or electrically automatic operation is to be performed, an appropriate operating mechanism may be connected to the connecting member 21.

8 and 9 show a pin feeding mechanism, which can be installed on the base 3. FIG.

This feed mechanism 22 is provided with a feed pawl 25 on a movable body 24 that can move up and down along a guide shaft 23, and the tip of the feed pawl 25 engages a cut 16 of a continuous pin 15, so that the movable body 24 can be lowered. In this case, the continuous pin 15 is also sent downward.

The movable body 24 is given an upward movement habit by a spring 26 wound around a guide shaft 23, and the movable body 24 is connected to a vertical shaft 28 supported by a bearing 27.

A boss 29 is fixed to the lower part of the vertical shaft 28, and a locking pin 30 is protruded from the boss 29.

In the figure, 31 is a regulating claw.

If the sliding member 19 is actuated via the connecting member 21, the holding member 1 is reversely moved in the same manner as described above, the pin 15a is cut and held, and the pin 15a is further moved downward. Connecting member 2 to be fixed
1 also descends, and at a certain descending point, the connecting member 21 hits the locking pin 30 protruding from the boss 29, and by lowering this, the movable body 24 also descends at the same time, and the feed claw 25 moves the continuous pin 15. Leave 16 cuts apart.

After inserting the pin 15a into the printed wiring board 18,
When the holding member 1, sliding member 19, etc. are returned to their regular positions and the connecting member 21 and the latching pin 30 are unlatched, the movable body 24 is raised to a predetermined height position by the spring 26, The tip of the feed claw 25 is hooked onto the cut 16 located above the cut 16 fed as described above.

When the feeding claw 25 moves upward, the tip comes into pressure contact with the side surface of the continuous pin 15, so the continuous pin 15 may move upward due to the pressure.
Since the continuous pin 15 is hooked to the notch 16 located above, the continuous pin 15 is prevented from shifting upward.

The above-mentioned feeding mechanism 22 is an example, and the configuration is not limited as long as it is a mechanism that feeds the continuous pin 15 intermittently at intervals of 16 cuts in conjunction with the operation of the holding member 1.

〔Effect of the invention〕

According to the present invention described above, the holding member 1 having the pin holding hole 2 can be turned upside down during vertical movement, and the pin is held in the holding hole 2 when rising, and the holding member 1 is further moved by the reversing plate 11. By holding and inverting the pin 15, the pin 15 can be bent and cut at the cut 16. Then, by lowering the holding member 1, it is reversed halfway and the single conductive pin 15 is
a is in a downward position, and can be directly inserted into a predetermined hole of the printed wiring board 18 and implanted.

That is, by vertically moving and vertically reversing the holding member 1, it becomes possible to form a single pin from a continuous pin and to perform a series of steps for implanting this single pin on a wiring board.

In particular, since the cut 16 portion is a portion with a small cross-sectional area in a metal wire having a uniform cross section, bending and cutting operations can be easily performed.

Furthermore, in the present invention, since the pins are bent and cut, the mechanism can be simplified, and by arranging the holding member 1, the link 4, etc., multiple pins can be attached to the printed wiring board at the same time. It is possible to insert.

[Brief explanation of drawings]

Fig. 1 is a front view of the device of the present invention, Fig. 2 is a sectional view of main parts of Fig. 1 seen from the side, Fig. 3 is a partially enlarged front view of the continuous pin, and Fig. 4 is an inverted state of the holding member. FIG. 5 is a partially enlarged front view showing the pin being held and cut, FIG. 6 is a partially enlarged front view showing the pin being inserted into the printed wiring board, and FIG. The figure is a partial sectional view showing another embodiment of the device of the present invention, and FIGS. 8 and 9 are a front view and a side view showing an example of a continuous pin feeding mechanism. 1 is a holding member, 2 is a holding hole, 3 is a base, 4 is a link, 6 is a vertical hole, 7 is a fixed shaft, 10 is a fitting groove,
11 is a reversal plate, 15 is a continuous pin, 16 is a cut, 1
8 is a printed wiring board, 19 is a sliding member, and 22 is a feeding mechanism.

Claims (1)

[Claims] 1. The lowermost pin 15a of the continuous pin 15 is held in the holding hole 2 of the holding member 1, which is vertically movable and reversible in its vertical position, in the raised position of the holding member 1. A conductive pin characterized in that a pin 15a formed by cutting a continuous pin 15 from a cut 16 by rotating the member 1 upward can be inserted into a hole in a printed wiring board 18 at a position below the holding member 1. How to insert. 2. A holding member 1 having a clamping hole 2, which is vertically movable and whose vertical position can be reversed, is connected to a link 4.
A shaft 5 is rotatably connected to one end of the link 4, and the other end of the link 4 is rotatably connected to a fixed shaft 7 that is movable up and down along a vertical hole 6 formed in the base 3 to hold the holding member 1.
is given a habit of coming into contact with the side surface of the base 3, and a fitting groove of the holding member 1 is attached to the shaft 12 whose center corresponds to the lowermost cut 16a of the continuous pin 15 at the top dead center position of the holding member 1 when holding the pin. 1. A conductive pin insertion device characterized in that a reversing plate 11 having a reversing plate 10 is rotatably installed.