JPH0373600A - Correction of bent pin - Google Patents

Abstract

PURPOSE:To automatically and sequentially correct bents and to efficiently and accurately correct the bents by securing the bent to the root of a pin to be corrected, inserting the pin into a circular hole, and rotating the hole at the root of the pin as a center. CONSTITUTION:A pin 1 of a transformer having a bent pin is inserted to a hole 1, and engaged between holding blocks 13 and 13. On the other hand, a driving shaft of a motor 9 is engaged fixedly with the central hole 11 of a driving block 10. A hole 12 in which a bearing is inserted is opened at a position deviated from the hole 11 on the upper face of the block 10. A bearing mounting shaft 6 disposed under a base plate 4 is mounted on the bearing. The block 10 is rotated, and the deviated bearing is also rotated at the shaft as a center. Simultaneously, since a plate 3 is rotated, the hole 2 is rotated at the root as a center. As a result, the bent pin 1 is corrected to be straight while sliding slightly, receiving a force from the wall of the hole 2.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a pin bend correction method for correcting the bend of a pin attached to a member such as a small transformer or an IC.

[Prior Art] For example, a small transformer has several pins 1 erected at its lower part, as shown in FIG.

These pins 1 are assembled by being inserted into holes in the printed circuit board and soldered.

By the way, since these pins 1 are thin, they are easy to bend, and some of them become bent during manufacturing.

Therefore, conventionally, a worker visually detects the bends in pin 1 and corrects them one by one using a tool.

[Problems to be Solved by the Invention] However, such work is limited in number, even if it takes - days, is inaccurate, and requires skill.

The present invention aims to solve the problems of the prior art.

[Means for Solving the Problems] The present invention involves fixing the base of a pin whose bending is to be corrected, inserting the pin into a circular hole, and rotating the hole around the base of the pin. This is a pin bend correction method that corrects the bend of the pin.

[Operation] As the hole rotates, the bent pin receives force from the hole wall inward, gradually moving toward the base of the pin.
The bend will be corrected.

[Examples] Examples of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram for explaining the present invention in detail. X
is the center point indicating the root of pin l.

Here, the pin l is a lead wire, a coil, or the like of an electronic component such as a transformer or IC, or another member. Also 2
is a circular hole. Here, the term "circle" includes an ellipse. The pin 1 in the figure is shown in a state where it is largely bent from the root X.

The hole 2 rotates around the root center X as shown by the arrow in the figure. As the pin l rotates, it receives a force from the wall of the hole 2 and is corrected to be straight as shown by the arrow while slipping somewhat. Y in the figure is within a permissible range where there is no practical problem as long as it is straight enough for the pin l to fit inside it. In this case, the base X of the pin 1 is located inside the hole 2.

FIG. 2 shows a case where the root X exists on the circumference of the hole 2.

FIG. 3A shows a case where the root X does not exist inside the hole 2. However, it is the case that the inside of the hole 2 may be within the tolerance range Y. In this case, the pin l gradually approaches the root X while going around the root X. Furthermore, as shown in Figure 3B, if the hole 2 moves only beyond the allowable range, it seems that the bending of the pin l cannot be corrected. If the bend has been corrected to the opposite side to the side that was originally bent, when the pin L is taken out from hole 2 due to the so-called springback action, the side that was originally bent will be slightly bent. Since it returns to , there are cases where it is eventually straightened within an acceptable range. Therefore, it can be said that there is no problem even in such a case.

Considering this springback effect, the first
Even in the case of FIG. 2, FIG. 3A, it is desirable that the bend be corrected in the area opposite to the initially bent side. In that case as well, when the pin 1 is removed from the hole 2, it becomes truly straight due to the action of the subjump pack.

Note that the hole 2 may rotate when rotating.

FIG. 4 is a perspective view of an apparatus used to implement the pin bend correction method according to the present invention.

In the same figure, 3 is a rectangular plate as shown in FIG. 5(a), and a plurality of holes 2 are bored on each side of the plate. As shown in FIG. 5(b), the shape of the hole 2 is wider at the upper side (F) and has a dome shape, so that the pin 1 can be easily inserted. In addition, it is possible to pick up pins 1 that are bent beyond the outer circumference of the hole 2. The part that contributes to correcting the bending of the pin 1 is the narrower diameter (E).

This plate 3 is fitted into a wide groove of a base plate 4 as shown in FIG. 6, and is fixed by screws (screw holes 5). Furthermore, a screw hole 7 for fixing a rectangular plate 8 as shown in FIG. 7 is bored at the end of the base plate 4.

The integrated plate 3, base plate 4, and rectangular plate 8 members are oscillated and rotated by the motor 9, and the hole 2 is rotated.

That is, the drive shaft of the motor 9 is shown in FIG. 8(a).

It is fitted and fixed into the central hole 11 of the drive block 10 as shown in (b). A hole 12 into which a bearing (not shown) is inserted is bored in the upper surface (left surface in the drawing) of this drive block 10 at a position eccentric from the central hole 11. The base plate 4 shown in FIG. 6(b) is attached to this bearing.
The shaft 6 is attached to the bearing mounting at the bottom of the shaft. Therefore, the drive block lO rotates due to the drive of the motor 9, but since the bearing is eccentric, it rotates around the motor shaft, and as a result, the base plate 4 also rotates in the same way. Make a rotation. Therefore, each hole 2 also performs a similar rotation.

In FIG. 4, sandwiching blocks 13.13 are provided above both sides of the plate 30 for sandwiching the transformer to be conditioned from the left and right sides, and the blocks 13.13 are connected to the device body 14.
is fixed. Note that the rectangular plate 8 and the device main body 14
A gap is provided between them at a predetermined interval. This is to prevent the rectangular plate 8 and the toe plate 3 from rotating together with the rocking rotation.

Next, how to use the above device will be explained.

A transformer or the like having bent pins is fitted between the sandwich blocks 13, 13 with each pin 1 inserted into the hole 2. As a result, the base of each pin 1 is fixed. After that, the motor 9 is driven. or,
The hole 2 may be driven by the motor 9 from the beginning, and then the pin 1 may be inserted into the hole 2.

As a result, the drive block 10 rotates and the eccentricity 1
．．・The released bearing also rotates around the ψ axis.

At the same time, since the plate 3 also rotates, the hole 2 rotates around its base.

The pin 1, which was bent seven times due to the mechanism described in 2.), receives force from the wall of the hole 2 and is straightened with some slipping. Note that the pin 1, which is straight from the beginning, remains as it is without receiving any force from the wall surface of the hole 2. Therefore, the worker can set Z one after another in the main HB and process them without checking each time whether pin 1 of the transformer is bent or straight.

[Effects of the Invention] As explained above, according to the method of the present invention, there is no need for the worker to visually check the degree of bending of the pin, and there is no need to use a tool to correct the bending. Therefore, the bends can be automatically corrected one after another, and the bends can be corrected very efficiently and accurately.

[Brief explanation of drawings]

1 to 3A and 3B are diagrams for explaining the principle of the pin bending correction method according to the present invention, and FIG. 4 is a perspective view showing an example of a device used for f=2 in the method, 5 is a plan view and a sectional view showing a plate of the same device, FIG. 6 is a plan view and a side view showing a plywood board of the same device, FIG. 7 is a plan view showing a rectangular plate of the same device, and FIG. The figure shows the drive unit of the device, and FIG. 9 is a plan view and a side view, and FIG. 9 is a perspective view of the transformer. 1... Pin 2... Hole X... Pin base Y...
·Tolerance

Claims (3)

[Claims] (1) Correcting the bend of the pin by fixing the base of the pin whose bend is to be corrected, inserting the pin into a circular hole, and rotating the hole around the base of the pin. A method for correcting bent pins. (2) At least a portion of the inside of the moving area of the hole is
2. The method for correcting pin bending according to claim 1, wherein the bending is within a predetermined allowable bending range centered on the root of the pin. (3) The pin bending correction method according to claim 1, wherein the base of the pin is located inside the hole.