JPH01130487A - Lead inserting machine - Google Patents

Abstract

PURPOSE:To prevent such inconvenience that adjoining reed terminals contact each other or a reed terminal with a reed to cause shortcircuiting, by previously performing corrective molding of the inclination of a reed piece of a clip lead using a corrective metal die. CONSTITUTION:A metal die 8 is arranged having a boss 8a to make molding upon correction of the inclination of a reed piece 2b inserted between adjoining reed pieces of a clip lead 2 in the position of a base board fixing table 3 nearer the operator in the transport direction of the clip lead 2. In case this clip lead 2 having inclined reed pieces 26 is transported up, the inclination of this reed piece 2b is corrected by the boss 8a of the corrective metal die 8, and a reed land of circuit board is inserted to the clip part 2c of this reed piece 2b. This prevents generation of such inconvenience that adjoining reed terminals contact each other or a reed terminal with a reed land at the time of insertion to cause shortcircuiting.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a lead insertion machine used in the manufacturing process of semiconductor integrated circuits.

[Conventional technology]

FIG. 6 is a plan view showing a schematic configuration of a conventional lead insertion machine, and FIG. 7 is an enlarged plan view of the main parts thereof. Reference numeral 1 in these figures is a circuit board such as a thick film board used in a hybrid thick film integrated circuit, and a plurality of (
In the figure, eight lead lands 1a are arranged in parallel with a certain pinch.

Reference numeral 2 denotes a long clip lead arranged parallel to one side of the circuit board 1, and the tie bar 2
On one side of the lead land 1a, a lead piece block consisting of a plurality of lead pieces 2b arranged in a comb-like shape with the same pinch as the lead lands 1a is formed in parallel with each other at a predetermined interval l. At the tip of each lead piece 2b, a bifurcated clip portion 2c, as shown in the side view in FIG. 8, is formed. Note that the tie bar 2a is provided with conveyance holes 2d at a predetermined pitch along its longitudinal direction.

Further, the width dimension of the lead land 1a on the circuit board l is formed wider than that of the clip portion 2c of the lead piece 2b.

On the other hand, reference numeral 3 denotes a board fixing base, and on the top surface of this board fixing base 3, there are a plurality of (three in the figure) positioning pins 4 that contact two sides of the circuit board 1 to position the circuit board l. A vacuum suction mechanism (not shown) is provided which suctions and fixes the circuit board l while being planted. Further, reference numeral 5 indicates the direction of the substrate fixing table 3 in its front and back direction, that is, the direction indicated by the arrow Al.

It is a cylinder-like driving body that drives in the A2 direction, and the reference numeral 6 moves the clip lead 2 in its longitudinal direction.
That is, it is a conveyor-like transport body that transports along the direction of arrow B. The surface of the transfer body 6 is provided with a convex portion that fits into the transfer hole 2d of the clip lead 2, and is configured to send the clip lead 2 to the front position of one side of the board fixing table 3. It has become.

Next, the operation of the conventional lead insertion machine will be explained.

The circuit board 1 placed on the upper surface of the board fixing table 3 is positioned at a predetermined position by the positioning pins 4 and is fixedly held by vacuum suction. On the other hand, clip lead 2
is transferred in the direction of arrow B by the transfer body 6, and one of the lead piece blocks is sent to a position in front of an example part of the circuit board 1.

As a result, each of the clip portions 2C of the lead pieces 2b constituting the lead piece block and each of the lead lands 1a of the circuit board 1 are arranged at positions facing each other.

In this state, the board fixing base 3 is moved by the driver 5 toward the direction indicated by the arrow AI.
Each lead land 1a of the circuit board 1, which is driven forward in the direction and fixedly held by the lead land 1a, is inserted and held in the clip portion 2C of the lead piece 2b, respectively, as shown in FIG. Then, the circuit board 1 released from the suction fixation is sent out in the direction of arrow B as the clip leads 2 are transferred by the transfer body 6, and the next lead piece block is sent in.

On the other hand, the board fixing base 3 is driven backward in the direction of arrow A2.
After the next circuit board l is placed on the upper surface of the circuit board 1, the above operation is repeated.

Note that the reference numeral 7 in FIG. 6 is the base of the lead insertion machine.

[Problem that the invention seeks to solve]

Incidentally, although the lead pieces 2b disposed on the clip lead 2 are molded using a mold and arranged in the same direction during production, they are accidentally bent and tilted during transportation work. Sometimes I end up doing it. The lead piece 2b extends in the longitudinal direction of the clip lead 2, for example, as shown by θ in FIG.
If the lead insertion machine has a conventional configuration, the lead land la of the circuit board 1 is inserted into the lead piece 2b which remains inclined. There is a problem in that the lead piece 2b comes into contact with another adjacent lead piece 2b or the lead land 1a, causing problems such as short circuits.

The present invention was made to solve such problems, and even if the lead pieces of the clip lead are inclined in the pitch direction, this inclination can be corrected in advance and molded. Another object of the present invention is to provide a lead insertion machine that can correctly insert the lead lands of a circuit board into the clip portions of the lead pieces.

[Means for solving problems]

In order to achieve the above object, the present invention provides a board fixing stand for positioning and fixing a circuit board having a plurality of lead lands arranged side by side on its side, and a plurality of lead pieces each having a clip portion at the tip. A long clip lead arranged in a tooth shape, a transfer body that transports the clip lead in the longitudinal direction and sends it to a position in front of one side of the circuit board, and a transporting body that transports the board fixing base in the front and back direction. a lead insertion machine that inserts a lead land portion of the circuit board into a clip portion of the lead piece by advancing the board fixing base with the driver; A correction mold having a convex portion inserted between adjacent lead pieces of the chrysobreed to correct and shape the inclination of the lead pieces is disposed at a position in front of the substrate fixing table in the transfer direction. It is something that you have.

[Effect]

According to the above configuration, when a clip lead having an inclined lead piece is transferred, the inclination of this lead piece is corrected and molded by the convex part of the correction mold in advance, and then the clip lead of this lead piece is Since the lead lands of the circuit board are inserted into the circuit board, it is possible to prevent problems such as short circuits caused by adjacent lead terminals or lead terminals and lead lands coming into contact with each other during this insertion.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is an enlarged plan view of a main part of a lead insertion machine according to an embodiment of the present invention, and FIG. 2 is a sectional view taken along the line 1--2 in FIG. 1. The basic configuration of this lead insertion machine is the same as that of the conventional example, so parts and portions in FIGS. 1 and 2 that are the same or equivalent to those of the conventional example shown in FIG. 7 are given the same reference numerals. , the explanation thereof will be omitted.

Reference numeral 8 in FIG. 1 is a correction mold, and this mold 8
is disposed in front of the substrate fixing table 3 (on the left side in the figure) in the longitudinal direction of the clip lead 2, that is, in the direction of its transfer (arrow B in the figure). Then, this mold 8 is inserted in the front and back direction, that is, the arrows CI and C2.
A driving body 9 such as a cylinder that drives in the direction is connected.

Further, on the upper surface of the mold 8, when the mold 8 is driven forward by the driving body 9, the clip lead 2 is inserted between the adjacent lead pieces 2b to correct the inclination of the lead piece 2b. A pair of convex portions 8a formed in parallel are arranged in parallel.

Note that the tip of each convex portion 8a is connected to the clip portion 2 of the lead piece 2.
It is formed into a tapered shape that can be cut between C.

Next, the operation of the lead insertion machine according to this embodiment will be explained based on FIGS. 3 to 5.

First, the circuit board 1 is placed on the upper surface of the board fixing table 3, positioned at a predetermined position by the positioning pins 4, and fixedly held by vacuum suction. On the other hand, the clip lead 2 is transferred in the direction of arrow B by the transfer body 6, and one of the lead piece blocks is sent to a position in front of an example portion of the circuit board 1. As a result, each of the clip portions 2c of the lead pieces 2b constituting the lead piece block and each lead land la of the circuit board 1 are arranged at positions facing each other.

Then, the board fixing base 3 is driven forward in the direction of the arrow AI hole by the driver 5, and each lead land 1a of the circuit board l fixedly held on the board fixing base 3 is inserted into the clip portion 2c of the lead piece 2b. Being pinched. after that,
The circuit board l, which has been released from suction and fixation, is sent out in the direction of arrow B as the clip lead 2 is transferred by the transfer body 6, and the next lead piece block is sent in, while the board fixation is driven backward in the direction of arrow A2. After the next circuit board 1 is placed on the top surface of the table 3, the above operation is repeated.

By the way, the transfer of the clip lead 2 by the transfer body 6 in this embodiment is carried out intermittently by two pinches of the lead piece 2b since the two protrusions 8a of the straightening mold 8 are arranged in parallel. Each time this intermittent transfer is interrupted, the straightening mold 8 is reciprocated in the directions of arrows CI and C2 by a driver 9. That is, when the intermittent transfer is interrupted, as shown in FIGS. 3 and 4, the straightening mold that is driven forward is placed between the rightmost lead piece 2b in the lead piece block and the leftmost lead piece 2b. The convex portion 8a located on the left side of the lead piece 8 is inserted to correct the inclination of the lead piece 2b.

After this straightening mold 8 is driven backward, the clip lead 2 is transferred by two pitches, and the lead piece 2
The convex portion 8 of the straightening mold 8 is again inserted between the lead pieces 2b following the lead pieces 2b.
The operation of inserting a is repeated in sequence.

Therefore, the inclined lead piece 2 as shown in FIG.
When the clip lead 2'b is transferred, the inclination of the lead piece 2b is corrected and molded by the convex part 8a of the correction mold 8.In this embodiment, the clip lead 2'
Although the explanation has been made assuming that the lead piece 2b is fed two pitches at a time, the present invention is not limited to this, and for example,
It may be for each pitch of the lead piece 2b, or may be for each three pitches. Further, the number of protrusions 8a of the straightening mold 8 is not limited to two (for example, when the straightening mold 8 is driven forward once, all of the protrusions 8a forming the lead piece block are The lead piece 2b may be corrected, and may be selected arbitrarily.

〔Effect of the invention〕

As explained above, according to the present invention, since the straightening mold is disposed at a position in front of the substrate fixing table in the direction of transfer of the clip lead, the inclination of the lead piece of the clip lead is corrected in advance by the straightening mold. Then, the lead land of the circuit board is inserted into the clip portion of this lead piece. Therefore, the occurrence of short circuits caused by adjacent lead terminals or lead terminals and lead lands coming into contact with each other, as in the conventional example, can be effectively prevented. This has the effect that the land can be inserted correctly.

[Brief explanation of the drawing]

1 to 5 relate to the present invention; FIG. 1 is an enlarged plan view of main parts of a lead insertion machine according to an embodiment; FIG. 2 is a sectional view taken along line nn in FIG. 1; Figure 3 is an operation diagram showing its operating state, Figure 4 is a cross-sectional view taken along the mV-mV line in Figure 3,
FIG. 5 is an operational diagram showing an operating state following the state of FIG. 3. 6 to 9 relate to the conventional example, FIG. 6 is a plan view showing the schematic structure of the lead insertion machine, FIG. 7 is an enlarged plan view of the main part, and FIG. 8 shows the lead insertion state. The cross-sectional view shown in FIG. 9 is an explanatory view showing the inclination of the lead terminals in the pitch direction. In the figure, numeral 1 is a circuit board, 1a is a lead land,
2 is a clip lead, 2b is a lead piece, 2C is a clip portion, 3 is a substrate fixing stand, 5 is a drive body, 6 is a transfer body, 8 is a correction mold, and 8a is a convex portion. Note that the same reference numerals in the drawings indicate parts and portions that are the same or correspond to each other.

Claims (1)

[Claims] (1) A board fixing stand for positioning and fixing a circuit board with a plurality of lead lands arranged in parallel on one side, and a plurality of lead pieces each having a clip portion at the tip arranged in a comb-like shape. The circuit board includes a long clip lead, a transporting body that transports the clip lead in its longitudinal direction and sends it to a position in front of one side of the circuit board, and a driving body that drives the board fixing table in the front and back direction. , and a lead insertion machine that inserts a lead land portion of the circuit board into a clip portion of the lead piece by advancing the board fixing base with the driver, A lead insertion machine characterized in that a correction mold having a convex portion inserted between adjacent lead pieces of the clip lead to correct and shape the inclination of the lead piece is disposed at a front position.