JPS61196561A - Lead wire aligning apparatus - Google Patents

Abstract

PURPOSE:To align lead wires unidirectionally and precisely, by providing with a means for rocking a box having a plural of stripe shaped grooves formed on the bottom plate to insert the lead wires therein. CONSTITUTION:A plural of stripe-shaped grooves 2 each having a width sufficient for inserting one lead wire are formed longitudinally on the bottom plate 1. When the driving motor 14 is driven, an eccentric cam 13 is rotated counterclockwise to lower the rear end of the box 3. At this time, the rod 7 which is lowered and advanced along the cam configuration of the fixed cam 8, pushes the partition plate 4 to do opening operation so that the lead wires are dropped into the box 3. The eccentric cam 13 which is further rotated lowers the front end of the box 3 while the partition plate 4 does closing operation by means of a spring, in order to close the opening section of the box 3. The lead wires dropped into the stripe-shaped grooves on the bottom plate 1 passes below the partition plate 4 sliding in the grooves 2, and are ejected via a guide plate.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an apparatus for aligning lead wires used in axial lead type semiconductor devices and the like.

[Prior Art] During the assembly process of an axial lead type semiconductor device, there is a process of soldering a silicon semiconductor chip to a header portion of a lead wire. In this step, the leads aligned in the - direction with the silicon semiconductor chip are housed in a soldering jig.

That is, the silicon semiconductor chip is sandwiched between the headers and arranged in a straight line, but in this case, the upper and lower lead wires that contact the silicon semiconductor chip must be aligned in the 1h direction in the previous process.

As this type of lead wire aligning device, there is a Japanese Patent Application No. 58-234537 proposed by the present applicant, and there are other general parts feeders and the like.

[Problems to be Solved by the Invention] The above-mentioned lead wire alignment device has problems such as not being able to align the lead wires in one direction with sufficient accuracy, and the structure being complicated and the manufacturing cost of the device being high. There was a problem. This invention was made in order to solve the above problems, and it is possible to connect the lead wires with sufficient accuracy.
It is an object of the present invention to provide a lead wire alignment device that can be aligned in the same direction, has a simple structure, and can be manufactured at low cost.

[Means for Solving the Problems] The lead wire alignment device according to the present invention includes a box in which a plurality of striped grooves each having a width for one lead wire are provided in the bottom plate, and the box is arranged in a box having a width for one lead wire. A swinging means is provided so that the oscillator is alternately raised and lowered.

[Function] The lead wires that are irregularly inserted into the box are oscillated by the front and back ends of the box moving up and down alternately, so that only the lead wires that have fallen into the grooves are lined up vertically. It is sequentially discharged to the outside.

The lead wires in the striped groove are arranged vertically in a line, but the direction of the header portion is irregular, facing either the leading end or the trailing end. After these lead wires are discharged from the box, they are guided by a guide plate to a slit through which the headers pass in a hanging state, and when passing through this slit, all the headers of the lead wires are in a hanging state, so that they are aligned in one direction. It will be done.

[Embodiment] A lead wire alignment device according to an embodiment of the present invention will be described below.

FIG. 1 is a plan view of the lead wire aligning device, FIG. 2 is a side view thereof, and FIG. 3 is an external perspective view thereof.

In these figures, (1) is the bottom plate, and this bottom plate (
1) is provided with a plurality of striped grooves (2) having a width that accommodates one lead wire in its longitudinal direction. (3) has side plates (3a) and (3b) on three sides.

It is a box surrounded by (3C), and (4) is a side plate (3a).
, (3b), (3c) It is a partition plate provided at the position of the opening where the Niyotte is formed, and the hinge (5)
It is configured so that it can be opened and closed freely.

The partition plate (4) is connected to the side plates (3a) (3b) by the spring (6).
) is installed.

The protrusion (4a) protruding downward at one end of the partition plate (4) is contacted by one end of a 1] dowel (7) provided so as to be movable back and forth along the front and rear directions of the box (3), and the rod The other end of (7) is arranged to contact the fixed cam (8) and is attached to an external member by a spring (9).

The box (3) has a shaft (10) so that it can swing forward and backward.
The box (3) is supported on the external member by a spring (11), and one end of the box (3) is also attached to the external member by a spring (11). (12) is a protrusion provided on the bottom surface of the bottom plate (1), and this protrusion (12) comes into contact with the outer periphery of the eccentric cam (13) attached to the output shaft (14a) of the drive motor (14). It is supposed to be done.

Next, the operation of the above configuration will be explained based on FIG. 4. First, the leads are supplied irregularly all at once into the box (3), and then the drive motor (14) is driven.
For example, if the eccentric cam (13) is in the direction of the arrow, that is, in the reverse direction
As shown in the same figure (A>), the box (3)
The rear end of is lowered.

The lead wire inside this box (3) runs along the bottom plate (1) of the box (
3) While sliding toward the rear end, the lead wires fall into the groove (2) and the header portions of the lead wires are aligned in a line facing either the front end or the rear end of the box (3). Also, the outside of the box (3), that is, the bottom plate (1) outside the partition plate (4)
) on the partition plate (
It falls into the box (3) by the [open] action in 4).

That is, when the rear end of the box (3) goes down, the rod (7) goes down along with the cam shape of the fixed cam (9), and in the process of going down, the rod (7) advances.
Push the partition plate (4) to make an "open" action, so the lead wire falls into the inside of the box (3).

Next, as shown in FIG. 4(B), when the eccentric cam (13) further rotates, the eccentricity l reaches its maximum, pushing up the rear end of the box (3), contrary to FIG. 4(A). As the front end of the box (3) is lowered, the rod (7) is moved backward by the cam shape of the fixed cam (9), and accordingly the partition plate (4) performs a "closing" action by the spring (6), and the box ( 3) will be removed.

Here, the lead wire that has fallen into the striped groove (2) of the bottom plate (1) slides inside the striped groove (2), passes under the partition plate (4), and passes through the guide plate (15) described below. ) is discharged to the outside.

When the eccentric cam (13) further rotates, the box (3) becomes horizontal as shown in FIG. Enough boxes (3
), if there is a lead wire in (A), it is not supplemented and
>, move to state (8), and convert these (A) to (C) into 1
The rocking motion is repeated as a cycle, and the streak-like tM (2
) only the lead wires that have fallen into the area are sequentially discharged to the outside. The lead wires that do not fall into the striped groove (2) should be connected to the partition plate (4) at the front end.
It moves back and forth between the lead wire and the side plate (3a) at the rear end, but as the lead wire gutter inside the box (3) is discharged,
The lead wires gradually decrease and eventually fall into the striped groove (2) and all the lead wires are discharged to the outside. The lead wire discharged to the outside is passed through a guide plate (15) provided along the linear groove (2) through a plurality of slits (16) having a width slightly larger than the wire diameter of the lead wire. and is guided onto the alignment table (17). The alignment table (17) has a sufficient slope on its top surface to allow the lead wires to fall naturally while hanging, and has a plurality of vertical l1l (18) at its tip adjacent to the slit (16). It is provided. The groove width of this vertical groove (18) is set to be a width necessary and sufficient for the header portion of the lead wire to pass through. Therefore, although the header portions of the lead wires guided onto the alignment table (17) have irregular directions, they are aligned in one direction by the header portions being suspended and falling into the slits (16). It will be done. Hang the lead wires on the alignment stand (1
7) Slide down.

Shutter (19) close to the tip of alignment table (17)
is provided. This shutter (19) is configured to reciprocate in the width direction of the alignment table (17), and has lead wires (20) facing the slit (16) and provided at the same pitch as the slit (16). .You can also use the alignment stand (
Between the tip of the shutter (17) and the shutter (19), there is approximately
A gap (20) equal to the lead wire diameter is provided.

On the alignment table (17), the lead wires are hung from the slit (16) and aligned in one direction with the straight part facing down, and are connected from the front end to the rear end of the alignment table (17) waiting for their turn to be discharged. It is in. Here, when the shutter (19) moves in the width direction, only the lead wire received in the lead wire receiving groove (20) is moved in the width direction through the gap (20), and the lead wire receiving groove (20) and the lead wire received in the lead wire receiving groove (20) are moved in the width direction. Vertical groove (18) of alignment table (17)
), the header portion of the lead wire falls into the vertical groove (18) and the lead wire falls downward. In this way, when the wires on the alignment table (17) fall downward one row at a time, the guide jig (21).

(22) through the receiving hole (2) on the solder bone jig (23).
4) The header part (25a) of the lead wire (25) falls into the
is caught on the edge of the receiving hole (24) and is supported in a suspended state. The jig (23) for the truss die 4 is moved line by line by a mechanism (not shown) in conjunction with the shutter (19), and is set to be located directly below the lead wire passage opening of the guide (22).

Next, the solder bone jig (23) is transferred to the next step, and after placing the silicon semiconductor chip on the header portion (25a'') of the lead wire (25), another solder bone jig (23) is transferred to the next step. ) are stacked and passed through a belt furnace etc., and the silicon semiconductor chip or the header part of the lead wire (25) (
25a) is melted with a solder that has been clad in advance and fixed together, but since these steps are not directly related to this invention, a detailed explanation thereof will be omitted.

[Effects of the invention] This invention gives a rocking motion to the box into which the lead wires are inserted as described above, and the lead wires fall into the grooves provided on the bottom plate of the box. Since they are discharged sequentially, it is easy to align them in one direction afterward, and this can be accomplished by using an alignment table with an hour wheel configuration. Also, 1
With the 1'8 mounting stand, the header part can be hung to ensure alignment in one direction, and there is no lack of accuracy as in the conventional case.

In general, the lead wire alignment device according to the present invention has advantages such as being simple in structure and inexpensive to manufacture.

[Brief explanation of drawings]

FIG. 1 is a plan view of a lead wire alignment device according to an embodiment of the present invention, FIG. 2 is a side view thereof, FIG. 3 is a perspective view of the main part thereof, and FIGS. 4(A) and (B). (C) is an explanatory diagram of the operation of the above-mentioned main parts. In the figure, (1) is the bottom plate, (2) is the striped groove, (3) is the box, (4) is the partition plate, (4a) is the protrusion, (5) is the hinge, (7) is the rod, ( 8) is a fixed cam, (10) is a shaft, (12) is a protrusion, (13) is an eccentric cam, (14) is a drive motor, (17) is an alignment stand, (19) is a shutter, (23) is This is a soldering jig. In each figure, the same reference numerals are given to the same or equivalent parts.

Claims (1)

[Claims] A vertically swingable box that surrounds three sides of the bottom plate, the box having a bottom plate provided with a plurality of striped grooves for vertically aligning lead wires made of wire rods, and this box. a partition plate that can be opened and closed, and a swinging means for vertically swinging the box; and a swinging means that pushes the partition plate when the rear of the box is lowered to rotate the box. and a partition plate opening/closing means that can move forward and backward to open the opening end, close the partition plate when the front of the box is lowered by the swinging means, and close the opening end. Device.