JPH0691351B2 - Automatic insertion device for electronic components with lead wires - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for inserting an electronic component with a lead wire into a printed circuit board, and more particularly to an extension pin for guiding the lead wire into a hole of the printed circuit board. The present invention relates to an automatic insertion device for an electronic component with a lead wire, which is provided with a holding / release mechanism for the lead wire of the electronic component and the extension pin for guiding and inserting the lead wire together with the extension pin into a printed circuit board in a straight line.

[Conventional technology]

The applicant of the present invention has found that the conventional insertion method in which the lead wire of an electronic component is held by the insertion guide from the upper side of the component body and the tip of the lead wire is guided to the printed board is limited to high-density insertion of various types of electronic components. In view of the fact that there is a prior application (Japanese Patent Application No. 63-218
No. 426), it is not necessary to prepare insertion guides of different shapes according to the shape and size of electronic parts, and electronic parts with lead wires that can be inserted even in a narrow space without interfering with adjacent parts etc. The automatic insertion method and device of

[Problems to be Solved by the Invention]

INDUSTRIAL APPLICABILITY As described above, the present invention relates to an automatic insertion device that uses an extension pin spliced to a lead wire to guide the lead wire of the electronic component into the hole of the printed circuit board. It has a mechanism to hold it independently, splice the lead wire to the extension pin, guide the lower end of the extension pin to the hole of the printed circuit board, and lower it so as to guide it to the clinch part that stands by under the printed circuit board. It is an object of the present invention to provide a novel automatic insertion device for electronic components with lead wires, which is provided with a mechanism for holding and releasing lead wires and extension pins for the components.

[Means for Solving the Problems]

In order to solve such a problem, according to the present invention, an extension pin is linearly joined to a lead wire of an electronic component, and an apparatus for automatically inserting the lead wire into the printed circuit board while guiding the extension pin, An upper first holding mechanism that holds and releases a lead wire of an electronic component on the upper surface side of a printed circuit board and a lower second holding mechanism that holds and releases an extension pin are independently movable back and forth 1 One block is supported by one block and a third holding mechanism is provided on the lower surface side of the printed circuit board, and one of the first holding mechanism and the second holding mechanism is movable up and down with respect to the other, and the second holding mechanism is an extension pin. There is provided an automatic insertion device for an electronic component with a lead wire, wherein the automatic insertion device is characterized in that it is opened after being delivered to the third holding mechanism.

[Action]

According to the present invention, the electronic component and the extension pin are respectively held by the first holding mechanism and the second holding mechanism, and at a predetermined insertion position where they are moved forward with respect to the block, one side is moved up and down to approach the other side. To connect the lead wire of the electronic component to the extension pin so that the first holding mechanism is opened and retracted so as not to interfere with the insertion.

〔Example〕

FIG. 1 schematically shows a method of inserting an electronic component with leads according to an embodiment of the present invention in the order of steps.

A large number of electronic components 1 that are continuously held in the longitudinal direction of the tape mount 1c are cut from the mount 1c, and the lead wires 1b are preliminarily set to an appropriate length. Note that this point is disclosed in detail in Japanese Patent Application No. 63-114578, “Method for cutting and bending lead wires” (filed on May 13, 1988) filed earlier by the applicant of the present invention.

The first holding mechanism (first clamp) 4 holds a plurality (two) of the lead wires 1b of the electronic component 1 at a predetermined insertion interval accurately. At this time, the electronic component 1 is in a vertical posture with the main body 1a in the upper part and the lead wire 1b in the lower part. A first holding mechanism 4 for holding and releasing the lead wire 1b of the electronic component 1 is shown in principle in FIG. As shown,
The two upper and lower plates A and B are provided with notches C and D for holding the lead wires, respectively, and the two plates are slid in the opposite directions as shown by the arrows to hold and release the lead wire 1b. To do.

The extension pin 3 having a diameter that allows the hole 7a of the printed board 7 to pass freely has a lower end 3a that is tapered to facilitate insertion into the board hole 7a, and a lead wire tip can be inserted into the upper end. With 3b. Second holding mechanism (second clamp)
5 is the number of extension pins 3 (two) equal to the number of lead wires 1b
Clamp the top of the. At this time, the extension pins 3 are located below the lead wires 1b of the electronic component 1, and are maintained vertically parallel at intervals corresponding to the intervals of the lead wires 1b. Then, while the first clamp 4 is still clamping the lead wire 1b, the pressing mechanism (push rod) 6 and the first clamp 4 above the electronic component 1 are lowered and the tip of the lead wire 1b is brought to the upper end of the extension pin 3. It is placed in the hole 3b, and the extension pin 3 is linearly joined to the lead wire 1b.

FIG. 3 shows an example of the second holding mechanism 5 for holding the extension pin 3. The extension pin 3 is received from a supply device (not shown), the upper end of the extension pin 3 is held, and the lower end is transferred to a third holding mechanism (clinch portion) 8 below the printed circuit board 7 and then opened. . As shown in FIG. 3, it comprises a fixed piece E and a movable lever G having a holding groove F. By rotating this movable lever about an axis H as shown by an arrow, an extension pin 3 is formed between them. Hold and open the upper end.

After the joining is completed, the first holding mechanism 4 is opened and retracted to a position where the main body 1a of the electronic component 1 and the push rod do not interfere with the lowering. Then, the push rod 6 further descends and the lead wire 1b
The extension pin is inserted into the board hole 7a while maintaining the state where the and the extension pin 3 are joined together.

A third holding mechanism (which is built in the clinch portion of the lead wire) 8 for receiving the lower end 3a of the extension pin 3 is on standby on the lower surface side of the printed board 7. Therefore, the extension pin 3 and the electronic component 1 are lowered until the lower end of the extension pin 3 reaches the third holding mechanism 8. During this time, the second holding mechanism 5 also descends at the same time. When the lower end 3a of the extension pin 3 reaches the third holding mechanism 8, the second holding mechanism 5 opens the extension pin 3 and retracts to a position where the main body 1a of the electronic component and the push rod do not interfere with the lowering. At this time, the second holding mechanism 5 is at a position away from the surface of the printed board 7, that is, at a position where it does not interfere with the adjacent component 1d on the printed board 7. At this time, extension pin 3
Is held by a third holding mechanism on the back surface of the printed board 7, and the electronic component 1 is supported between the extension pin 3 and the push rod 6.

4 (a) and 4 (b) show in principle a mechanism for moving the first holding mechanism 4 and the second holding mechanism 5 forward and backward. In FIG. 4 (a), the first holding mechanism 4 is attached to the tip of the lever 1 around the center, and the second holding mechanism 5 is attached to the tips of the pair of levers J on both sides. By independently rotating around K, the first holding mechanism 4 and the second holding mechanism 5 can be moved forward and backward as indicated by arrows. In FIG. 4B, the first holding mechanism 4 and the second holding mechanism 4
By attaching the holding mechanism 5 to the respective sliders L and M, and sliding this slider back and forth with respect to the block N as shown by the arrow, the first holding mechanism 4 and the second holding mechanism 5 are independently moved back and forth. It can be moved. In any of the examples, the entire blocks of the first holding mechanism 4 and the second holding mechanism 5 are moved up and down as indicated by arrows. In addition, in FIGS. 4A and 4B, the first holding mechanism 4
A mechanism for vertically moving the second holding mechanism 5 and the second holding mechanism 5 is omitted.

While maintaining the supporting state of the lead wire 1b and the extension pin 3, the push rod 6 is further lowered to connect the lead wire 1b of the electronic component 1 to the board hole 7a.
To insert. During this time, the third holding mechanism 8 is also lowered at the same time. After the lead wire 1b is inserted into the board hole 7a, the extension pin 3
Are collected in the clinch section as described below. After the insertion of the lead wire 1b is completed, the clinch part bends the lead wire on the back surface of the substrate (not shown), and then the push rod 6 ascends so that the third holding mechanism 8, the first clamp 4, and the second clamp return to their original positions. Return to position.

Next, referring to FIGS. 5 to 12, the lead wire of the electronic component 1
Specific examples of the first holding portion 40 that holds and releases the 1b and the second holding portion 50 that holds and releases the extension pin 3 will be described.

FIG. 5 is a side view showing the entire holding mechanism, FIG. 6 is a front view seen from the arrow VI in FIG. 5, and FIG. 7 is a plan view seen from the arrow VII in FIG. The block 10 carrying the first holding portion 40, the second holding portion 50 and the vertical movement mechanism 80 is supported so as to be able to slide vertically along the fixed guide rail 20. Between the block 10 and the guide rail 20, tension springs 21 and 22 whose upper end is connected to the guide rail 20 and lower end are respectively connected to the block 10 are provided at two front and rear positions, and the block 10 is stopped by the stopper 2
It is biased to the upper end position where it abuts 3. The stopper 23 is fixed to the upper part of the guide rail 20, and the upper end position of the block 10 can be adjusted by the adjusting screw 24 and the lock nut 25. The block 10 is lowered against the tension springs 21 and 22 by a drive mechanism such as a cam (not shown). Block 1
At 0, a first holding part 40 (upper side) and a second holding part 50 (lower side) are provided.

FIG. 8 is a plan view of the first holding portion 40, and FIG. 9 is a detailed view of a portion indicated by IX in FIG. The first holding unit 40 is the block 10
Outer slider 32 that slides back and forth along slider groove 31 of
Further, an inner slider 33 that can also slide back and forth is provided inside thereof.

On the side of the outer slider 32, V-grooves 34a,
34b, 34c, on the other hand, a steel ball 36 pressed by a spring 35 is provided on the side of the slider groove 31, and the steel ball 36 is provided with these V balls.
The position of the outer slider 32 is regulated by engaging with any of the grooves 34a, 34b, 34c. On both sides of the front end of the outer slider 32, a pair of levers 37, 3 pivotable about shafts 37a and 38a.
8 levers are provided with a spring 39 suspended between them and the lever 3
The free ends of 7,38 are biased toward each other.
Note that one lever 37 is longer than the other lever 38.

At the front part of the inner slider 33, there is an up-and-down mechanism 80 described later,
Further, in front of it, there is provided a first holding mechanism (clamp) 4 for holding and opening the lead wire 1b of the electronic component 1, which is equivalent to that described in FIG. That is, a plurality of cutouts C are provided in the plate A at the front end of the inner slider 33, and a plurality of corresponding cutouts D are also provided in the slider plate B that is slidable to the left and right and that is arranged underneath thereof. The slider plate B is erected at its end by a spring 41 suspended between the plate A and the slider plate B.
42 urges the side of the plate A in contact with the edge of the plate A, that is, the side of closing the lead wire 1b of the electronic component 1. Inner slider 33 has spring 38
Always urged forward by. However, when the inner slider 33 moves forward, its projection 49 (FIG. 5) hits the front wall of the groove 70 of the block 10 and prevents it from moving further than the position shown by the solid line in the figure.

Inside the levers 37 and 38, cam portions composed of raised portions 37b and 38b and recessed portions 37c and 38c are symmetrically formed, while the inner slider 33 has T-shaped portions 43 protruding to the left and right sides.
There is. Therefore, when the outer slider 32 comes to the most forwardly moved position (the position where the steel ball 36 engages with the V groove 34c), the T-shaped portion 43 bulges the levers 37 and 38 as shown by the solid line in the figure. Contacting the parts 37b, 38b, open the levers 37, 38 against the spring 39. At this time, the lever 37 on the long side is moved to the slider plate B.
Therefore, the slider plate B closes the notches C and D, that is, the first holding mechanism (clamp) 4 by the spring 41. When the outer slider 32 moves slightly rearward (the steel ball 36 moves into the V groove 34
(the position where it engages with b), the T-shaped portion 43 moves while contacting from the inclined portion of the levers 37, 38 to the recessed portions 37c, 38c,
The spring 39 closes the levers 37, 38. At this time, as shown by the arrow in FIG. 9, the lever 37 on the long side pushes the slider plate B, and the slider plate B moves in the arrow direction against the spring 41 to open the notches C and D. When the outer slider 32 is moved further rearward, the T-shaped portion 43 is recessed in the levers 37, 38.
With the jaws 37d, 38d still engaged with 8c, the T-shaped portion 43 is pulled rearward and moved backward together with the inner slider 33 to a position where the steel ball 36 fits in the V groove 34a.

Drive lever 44 for driving the outer slider 32 back and forth
(FIG. 5, FIG. 6, FIG. 7) is swingably attached to one side of a shaft 11 provided on a front portion of the block 10 and has a U groove 45 at a lower end of a drive lever 44 thereof. On outer slider 32
A shaft portion 46 (FIG. 6) integrated with is engaged, and a drive mechanism such as a cam (not shown) is engaged with a cam roller 47 rotatably attached to the upper end of the drive lever 44.

FIG. 10 is a plan view of the second holding portion 50, and FIG. 11 is a detailed view of a portion indicated by XI in FIG. The second holding unit 50 is the first maintaining unit.
It has a structure similar to 10. That is, the second holding part 50 has an outer slider 52 that slides back and forth along the slider groove 51 of the block 10, and an inner slider 53 that can also slide back and forth inside the slider 52. Front and rear 2 on the side of the outer slider 52
V-grooves 54a and 54b are provided at positions, and a steel ball 56 pressed by a spring 55 is provided on a side portion of the slider groove 51 to regulate the front-back position of the outer slider 52. At the front end of the outer slider 52 is a pair of pivotable levers 57, 58 which are biased by springs 59 towards each other.

At the front end of the inner slider 53, a second holding mechanism (clamp) 5 that holds and releases the extension pin 3 is provided, which is equivalent to that described in FIG. That is, a plurality of pieces E having holding grooves F are fixedly attached to the front end of the inner slider 53, and a plurality of movable levers G corresponding to each piece E are attached so as to be pivotable about an axis H, respectively. Each movable lever G is biased in the closing direction by each torsion spring 61. A slider plate 62 that can slide to the left and right is fitted on the shaft J of each movable lever G.

The inner slider 53 is constantly urged forward by a spring 68. However, it is regulated so as not to move forward from the position shown by the solid line in the figure.

The outer slider 52 has levers 57, 5 similar to those of the first holding portion.
A cam portion is symmetrically formed on the inner edge of 8, and the inner slider 5
3 has a T-shaped portion 63 protruding to the left and right sides. As a result, when the outer slider 52 moves forward (the steel ball 56 moves into the V groove
54b), the T-shaped portion 63 opens the levers 57, 58 against the spring 59 as shown. At this time, lever 57
Does not press the slider plate 62, so that each movable lever G closes the second holding mechanism (clamp) 5 by the torsion spring 61.
When the outer slider 52 moves slightly rearward from the position where the steel ball 56 engages with the V groove 54b, the T-shaped portion of the inner slider 53
63 comes to the recessed part inside the levers 57, 58, and the levers 57, 58
Close. At this time, as shown by the arrow in Fig. 11, the lever
57 presses the slider plate 62 and closes the movable lever G, that is, the second holding mechanism (clamp) 5 against each spring 61. When the outer slider 52 moves further rearward, the steel ball 56 moves the V-shaped groove 54a while the T-shaped portion 53 remains engaged with the recessed portions of the levers 57 and 58.
And moves backward together with the inner slider 53 to a position where it engages with.

The drive lever 64 of the outer slider 52 is swingably attached to the other side of the shaft 11 as in the case of the first holding portion, and has a U groove at the lower end thereof.
A shaft portion 66 (FIG. 6) which is integral with the outer slider 62 is fitted in the drive shaft 65, and the cam roller 67 at the upper end of the drive lever 64 is driven back and forth by a cam or the like (not shown).

12 and 13 show the first holding mechanism (clamp) 4 in the second position.
The mechanism which moves up and down with respect to the holding part (clamp) 5 is shown. The outer slider 32 of the first holding portion 40 has a portion that is bulged upward at the front end portion, and a drive lever 82 that can pivot about a horizontal shaft 81 is attached to this portion. The drive lever 82 is biased in the direction of the arrow by a torsion spring 83. On the other hand, the front end of the inner slider 33 of the first holding portion 40 has a portion 87 that comes into contact with the cam 86 of the drive lever 82, and supports the block 84 carrying the first holding mechanism 4 so as to be vertically movable. . The block 84 is biased upward by a spring 85 and is in contact with the end portion of the drive lever 82.

When the outer slider 32 of the first holding portion 40 is at the most advanced position (the steel ball 36 is at the position of the V groove 34c), the block 82 is at the raised position as shown in FIG. At this time, as described above, the first holding mechanism 4 is closed and holds the lead wire 1b of the electronic component 1. Similarly, the outer slider 52 of the second holding portion 50 is also in the forward position (the steel ball 56 is in the V groove 54b), the second holding mechanism 5 is closed as described above, and the lead wire of the electronic component 1 is closed. The extension pin 3 is held at the same vertical position as 1b.

When the outer slider 32 of the first holding portion 40 is slightly retracted, the cam 86 of the drive lever 82 moves along the portion 87 of the inner slider 33, so that the drive lever 82 rotates about the shaft 81 in the arrow direction by the spring 83. Then, the block 84 is lowered against the spring 85. In this way, when the electronic component is lowered and its lead wire approaches the upper end of the extension pin, the pair of levers 37 and 38 move in the closing direction as described above, and the first holding mechanism 4
Open and open the electronic components. And the outer slider 32
Comes to a position where the steel ball 36 engages with the V groove 34b and becomes the lowest position of the block 84 shown in FIG. After that, the first holding unit 40
Is retracted as described above to a position that does not hinder the lowering of the electronic component, and the V groove 34a is in a position where it engages with the steel ball 36.

〔The invention's effect〕

As described above, according to the present invention, in the device for joining the extension pin to the tip of the lead wire of the electronic component and inserting it into the printed circuit board, the lead wire and the extension pin of the electronic component are held / released, and the lead wire is provided. Also, the extension pins can be joined smoothly.

[Brief description of drawings]

FIG. 1 is a schematic view showing an automatic insertion method of an electronic component with a lead wire according to the present invention in the order of steps, and FIG. 2 is a perspective view showing the principle of a first holding mechanism for holding and releasing a lead wire of an electronic component, FIG. 3 is a perspective view showing the principle of a second holding mechanism for holding and releasing the extension pin, and FIGS. 4 (a) and 4 (b) show a mechanism for moving the first holding mechanism and the second holding mechanism back and forth. Schematic views, FIGS. 5 to 13 are detailed views of the holding mechanism in the automatic insertion device of the present invention, and FIG. 5 is a side view of the whole, and FIG.
5 is a front view seen from the arrow VI of FIG. 5, FIG. 7 is a plan view seen from the arrow VII of FIG. 5, FIG. 8 is a plan view of the first holding portion, and FIG. 9 is a plan view of FIG. Detailed plan view seen from arrow IX, No. 10
FIG. 11 is a plan view of the second holding portion, FIG. 11 is a detailed plan view seen from the arrow XI of FIG. 10, and FIGS. 12 and 13 are side views showing the vertical movement of the first holding mechanism. The figure shows the raised position, and Fig. 13 shows the lowered position. 1 ... Electronic parts, 1a ... Lead wire, 3 ... extension pin, 4 ... First holding mechanism, 5 ... Second holding mechanism, 10 ... Block, 20 ... Guide rail, 32,53 ... Outer slider, 40 ... first holding part, 33,53 ... inner slider, 50 ... second holding part, 80 ... up / down mechanism, 82 ... driving lever.

Continuation of the front page (56) References JP-A-58-192396 (JP, A) JP-A-59-181691 (JP, A) JP-A-62-81795 (JP, A)

Claims (8)

[Claims] 1. An apparatus for automatically connecting a lead wire (1b) of an electronic component (1) with an extension pin (3) in a straight line and automatically inserting the lead wire into the printed board while guiding the lead wire to the extension pin. The upper first holding mechanism (4) for holding and opening the lead wire of the electronic component and the lower second holding mechanism (5) for holding and opening the extension pin (3) are independently provided on the upper surface side of the Supported on one block (10) so as to be movable back and forth, and provided with a third holding mechanism (8) on the lower surface side of the printed circuit board, and with the first holding mechanism (4) and the second holding mechanism (5). An automatic insertion device for an electronic component with a lead wire, characterized in that one is movable up and down with respect to the other, and the second holding mechanism (5) opens after passing the extension pin (3) to the third holding mechanism. . 2. The block (10) includes a first holding portion (40) having a first holding mechanism (4) attached to a front end thereof and a second holding portion (40) provided to a front end thereof.
The second holding part (50) with the holding mechanism (5) attached to it
A first holding part (40) that is arranged in a step and one of the first holding mechanism (4) and the second holding mechanism (5) carries it.
The device according to claim 1, which is attached to the second holding part (50) so as to be vertically movable. 3. A first holding part (40) and / or a second holding part (50) is provided with an outer slider (32, 52) slidable forward and backward with respect to the block (10), and on the outer slider. And an inner slider (33, 53) slidable back and forth, and a first holding mechanism (4) and / or a second holding mechanism (5) are carried on the front end of the inner slider, and an outer slider is provided. The device according to claim 2, wherein the relative movement of the inner slider is interlocked with the opening / closing operation of the first holding mechanism (4) and / or the second holding mechanism (5). 4. A first holding portion (40) having a first holding mechanism (4) attached to a front end of the block (10) so as to be vertically movable,
Second holding part (50) with the second holding mechanism (5) attached to the front end
The device according to claim 1, wherein and are arranged in two stages, one above the other. 5. A first holding portion (40) comprises an outer slider (32) slidable forward and backward with respect to a block (10) and an inner slider (33 slidable forward and backward with respect to the outer slider). ) And a first holding mechanism (4) is movably supported at the front end of the inner slider, and the first holding portion (40) is provided.
The relative movement of the outer slider and the inner slider is interlocked with the opening / closing operation and the up / down operation of the first holding mechanism (4), and the second holding portion (50) can slide back and forth with respect to the block (10). An outer slider (52) and an inner slider (53) slidable back and forth with respect to the outer slider, and carries a second holding mechanism (5) at the front end of the inner slider and also holds the second holding mechanism. The device according to claim 4, wherein the relative movement of the outer slider and the inner slider of the portion (50) is interlocked with the opening / closing operation of the second holding mechanism (5). 6. The outer slider (32) of the first holding portion (40) is located at three positions (34a, 34b,
The outer slider (32) moves from the rear position (34a) to the intermediate position (34b) while the inner slider (33) moves with the outer slider to the front position of the outer slider (32c). While the (32) moves from the intermediate position (34b) to the foremost position (34c), the inner slider (33) is restricted so as to stay at the front position thereof, and the outer slider (32) moves from the foremost position (34c). The device according to claim 5, wherein the first holding mechanism (4) moves from the raised position to the lowered position with respect to the inner slider (33) and moves from the closed state to the open state while moving to the intermediate position (34b). . 7. An inner slider (33) of the first holding mechanism (4).
7. The device according to claim 6, wherein the up-and-down movement is performed by a drive lever (82) attached to the front end of the outer slider (32) and moved up and down by relative movement with the inner slider (33). 8. The outer slider (52) of the second holding part (50) is located at two positions (54a, 54a) in front and back of the block (10).
b) so that the outer slider (52) moves from the rear position (54a) to just before the front position (54b), the inner slider (53) moves with the outer slider to its front position. , The inner slider (53) is regulated so as to stop at the front position of the outer slider (52) while the outer slider (52) moves from the position slightly before to the front position (34b), and the outer slider (52) moves to the front position ( The device according to claim 5, wherein the second holding mechanism (5) transitions from a closed state to an open state while moving from 34b) to the position slightly before.