JPH0471300A - clinch device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention is directed to a clinch for bending the lead wires of electronic components mounted on a board, which penetrate the board and protrude to the opposite side. Regarding equipment.

[Prior Art] Conventionally, in a mounting apparatus for mounting electronic components on a printed circuit board, at least two lead wires of the electronic components mounted on the printed circuit board that penetrate the printed circuit board and protrude to the opposite side are bent. For this reason, clinch devices are widely used. This clinching device moves and drives claws corresponding to at least two lead wires to be clinched in a direction that narrows the gap between them, and bends the lead wires inward between the two claws. Then they clinch.

[Problems to be Solved by the Invention] However, in the conventional clinching device described above, the positions of at least two claws are set in a fixed state, so when clinching electronic components with different shapes, Therefore, it becomes necessary to prepare a clinching device corresponding to each shape. When electronic components of different shapes are automatically mounted and clinched in succession, each clinching device is moved to the mounting position according to the mounting order of the mounted electronic components, and the corresponding lead wires are must perform a bending motion.

Furthermore, each time the shape of the electronic component changes, it becomes necessary to replace the corresponding clinch device.

In this way, a problem has been pointed out that the cost of the entire mounting apparatus including the clinch apparatus increases.

In addition, according to the mounting order of electronic components that are mounted at high speed,
It has also been pointed out that the need to move the clinch device to the mounting position and to have a large number of clinch devices limits the types of shapes of electronic components that can be mounted with a single mounting device. There is.

This invention was made in view of the above-mentioned problems, and an object of the invention is to provide a clinching device that can clinch electronic components of various shapes with one clinching device.

Another object of the present invention is to provide a clinch device that can reduce the cost of the entire mounting device.

Another object of the present invention is to provide a clinch device that can greatly increase the variety of shapes of electronic components that can be mounted with one mounting device.

[Means for Solving the Problems] In order to achieve the above-mentioned object, a clinch device according to the present invention clinches at least two lead wires of an electronic component mounted on a board that penetrate the board and protrude to the opposite side. A clinch device for bending a book includes at least two claw members each capable of coming into contact with at least two lead wires passing through the substrate from the outside, and each of the claw members is configured to bend a corresponding lead wire. A driving means for driving, a first changing means for changing the distance between the pawl members, and an angle at which the movement axis of the pawl member is arranged with respect to a predetermined reference line of the substrate. The present invention is characterized by comprising a second changing means.

[Operation] In the clinch device configured as described above, first, the first changing means changes the distance between the at least two claws to correspond to the distance between the lead wires of the electronic components to be clinched. The distance is set to an arbitrary value, and the claw portion is brought to the standby position just before the electronic component is mounted on the board. Immediately after the electronic component is mounted on the board, only the driving means is activated to reciprocate the claw portion and bend the corresponding lead wire.

[Embodiment] Below, the configuration of an embodiment of a clinch device according to the present invention will be described in detail with reference to the accompanying drawings.

In this embodiment, the clinch device 10 is configured to clinch an electronic component 14 mounted on a printed circuit board 12 to the circuit board 12, as shown in FIG. Specifically, the electronic component 14 is composed of a main body portion 14a and a plurality of lead wires 14b in two rows that protrude downward from opposite side edges of the lower surface of the main body portion 14a. , the circuit board 12 includes:
These lead AI! 14 through-holes 1 through which b are inserted, respectively.
2a is formed so as to penetrate vertically.

This clinch device IO bends a pair of opposing lead wires 14bl and 14b2 in each row among the plurality of lead wires 14b inwardly, so that the mounted circuit component 14 can be connected to the circuit. It is configured to clinch so that it does not come out from the board 12.

Here, this clinch device IO is disposed below the circuit board 12, and two lead wires 14b are bent among a plurality of lead wires 14b passing through the through holes 12a of the circuit board 12.

two claw portions 16a that can respectively abut on 14b2 from the outside;
16b, a bending drive mechanism 18 as a driving means for driving each claw part 16a, 16b so as to bend the corresponding lead wire 14bi, 14b, and both claw parts 16a, 1.
The lead wires 14b, , i4b* of the electronic components 14 that are to be clinched are separated from each other in the standby position of the electronic components 6b
and a spacing changing mechanism 20 as a first changing means that changes the spacing according to the mutual distance between them, and these claw portions 16a.

It is generally composed of an angle changing mechanism 22 as a second changing means for changing the arrangement angle of the movement axis of the circuit board 16b with respect to a predetermined reference line of the circuit board 12.

Specifically, this clinch device 10 includes a base 24 fixed on a base (not shown), rotatably supported on this base 24 via a bearing 26, and one configuration of the angle changing mechanism 22 described above. The rotary table 28 defines the elements. The above-mentioned interval changing mechanism 20 is disposed on this rotary table 28, and this interval changing mechanism 2
0, the above-mentioned bending drive mechanism 18 is attached.

That is, the base 24 described above has a substantially cylindrical shape, and a motor mounting plate 30 having an opening 30a formed in the center is integrally provided inside. A rotary drive motor 32 for rotationally driving the above-mentioned rotary table 28 is mounted on the lower surface of the plate 30, and a motor shaft 32a thereof is mounted on the lower surface of the plate 30.
is attached so as to protrude upward through the opening 30a. Further, a driven shaft 28a projecting downward is integrally attached to the center of the lower surface of the rotary table 28. Then, this driven shaft 28a and the motor shaft 3
2a are connected to each other via a coupling member 34 so as to rotate integrally with each other.

Since the angle changing mechanism 22 is configured in this way, when the rotation drive motor 32 is started, the rotation table 28
is rotationally driven, and as a result, the angle at which the predetermined diameter A of the rotary table 28 is arranged with respect to the predetermined reference line of the circuit board 12 can be changed to an arbitrary angle, and can be fixed at an arbitrary angle. become.

Next, the rotary table 2 that constitutes this angle changing mechanism 22 is
The interval changing mechanism 20 disposed on the spacer 8 will be explained.

This interval changing mechanism 20 includes one first guide member 36 that extends along the predetermined diameter A described above and is fixed on the rotary table 28. This first guide member 36 has a pair of slide bases 38a and 38b.
A pair of slide bearings 40a+, 40a2 each
; 40b, , 40b□ to be slidably attached.

On the other hand, in this embodiment, the outer circumferential portions of the rotary table 28 located at both ends of the above-mentioned predetermined diameter A are used for slidingly driving both slide bases 38a and 38b along the predetermined diameter A. sliding drive motors 42a, 42b
are arranged with their respective motor shafts 42a+ and 42b+ extending toward the center of the rotary table 28. Further, on the lower surface of each of the slide stands 38a and 38b,
Pole nuts 44a and 44b are attached.

On the other hand, the ball shaft screw 46a is screwed into these pole nuts 44a and 44b, respectively.

46b are arranged along the predetermined diameter A mentioned above. The radially outer ends of these ball shaft screws 46a, 46b and the motor shafts 42a+ 42bz of the corresponding sliding drive motors 42a, 42b are connected to the coupling member 4, respectively.
They are connected to each other via 8a and 48b so as to rotate integrally with each other.

Since the interval changing mechanism 20 is configured in this way, when both the sliding drive motors 40a and 40b are started, both the sliding bases 38a and 38b are slidably driven along a predetermined diameter A, and as a result, The mutual separation distance between the slide tables 38a and 38b can be changed to an arbitrary distance, and can be fixed at an arbitrary distance.

Next, the claw members 16a and 1 are respectively disposed on the pair of slide bases 38a and 38b constituting the interval changing mechanism 20.
6b, and these claw members 16a.

The bending drive mechanism 18 for bending the lead wires 14b, 14b via the lead wires 16b will be described with reference to FIG. 2 as well.

First, in this embodiment, the bending drive mechanism 18
is equipped with a pair of drive cylinders 50a and 50b corresponding to both claw members 16a and 16b, respectively. These drive cylinders 50a.

50b is attached to pieces 52a and 5 which are integrally provided in an upright position on the corresponding slide bases 38a and 38b, respectively.
2b, corresponding piston rods 54a and 54b are attached to each other so as to be able to protrude toward each other.

On the other hand, a second guide member 56 is provided on the upper surface of both slide bases 38a and 38b along the above-mentioned predetermined diameter A.
a and 56b are attached respectively. These second guide members 56a, 56b include sliding members 58a, 58b.
The claw members 16a, 16b described above are slidably attached to the corresponding slide bases 38a, 38b, respectively. Note that these sliding members 58a and 58b are
They are fixed to the lower surfaces of the corresponding claw members 16a and 16b, respectively. These sliding members 58a, 58b have corresponding piston rods 54a, 54b at their outer ends.
4b.

Although not shown, each of the driving cylinders 42a and 42b is connected to a common pneumatic source through a connecting valve, and the operating compressed air from the pneumatic source is supplied through each connecting valve. By introducing the corresponding piston rod 5
4a, 54b so as to protrude. These piston rods 54a and 54b are
The piston rods 5 protrude by a sufficient amount to bend the corresponding lead wires 14b, 14b2.
4a and 54b, respectively, and are configured to be detected by unillustrated rod end sensors.

It should be noted that when the driving cylinders 42a, 42b are not injected with operating compressed air, the corresponding piston rods 54a, 54b are pulled inward by return springs (not shown), and in these retracted positions, The standby positions of the corresponding claw members 16a and 16b are respectively defined.

Since the bending drive mechanism 18 is configured in this way, both the claw members 16a and 16b are pushed out and driven along the predetermined diameter A as the drive cylinders 42a and 42b are activated, and as a result, both the claw members The leads 16a and 16b abut the corresponding lead wires 14b, 14bl from the outside, and bend them inward.

Note that the rotation drive motor 32 described above and the motor shafts 32 a of the pair of sliding drive motors 42 a and 42 b
, 42 a + , 42 b + are attached with low-return encoders 60 a, 60 b, 60 c, and these low-return encoders 60 a.

60b and 60c are corresponding motor shafts 32a.

It is configured to detect the amount of rotational drive of 42a+ and 42b+, respectively. Here, these rotary encoders 6
The detection results at 0a, 60b, and 60c are sent to the control unit 6.
It is output to 2.

This control unit 62 detects the rotational drive amount and rotational position of the rotary table 28 based on the detection results input here, and also determines the mutual distance between the slide bases 38a and 38b, that is, the distance between the two claw members 16a, 16b is configured to detect the mutual separation distance at the standby position.

The control unit 62 also controls the specifications of the electronic component 14 to be clinched and the circuit board 1 of the electronic component 14.
2 is read from the storage device 64,
The rotary drive motor 32 and the pair of sliding drive motors 42a42b are configured to be rotationally controlled in accordance with the read information.

Note that the specifications of the electronic component 14 described above include the mutual distance between the leads 11114b arranged in two rows, that is,
This includes the separation distance of the lead wires 14b, 14b, which are to be clinched, and the control unit 62 selects a position that is slightly longer than the separation distance of the lead wires 14b, 14b, which are to be clinched. The pair of sliding drive morphs 42a and 42b are driven and controlled so that the pair of claw members 16a and 16b are in the standby position.

Further, the above-mentioned mounting angle is a value defined by the angle between a predetermined reference line set on the circuit board 12 and a line segment connecting the pair of lead wires 14b+ and 14bi to be clinched. Here, in this example,
The control unit 62 drives and controls the rotary drive motor 32 so that the line segment connecting the pair of lead wires 14b14b2 to be clinched follows the predetermined diameter A mentioned above.

Here, the electronic component 14 is inserted, that is, mounted, into a predetermined position on the circuit board 12 while being held by a head mechanism (not shown). It is set to start the clinch operation when the signal is output.

The clinch control operation in the control unit 62 in the clinch device 10 having the above-described configuration will be described below with reference to the flowchart shown in FIG. 4.

First, in step SIO, when the start of the mounting operation of the electronic component 14 by the head mechanism (not shown) is detected,
In step S12, the electronic component 1 currently being mounted
Load the type and mounting angle of 4. And step S
In step 14, it is determined whether the type of the electronic component 14 currently being mounted matches the type of the electronic component 14 that was previously mounted. In this step S14, YES
If it is determined that the electronic component 1 currently being mounted
If it is determined that the 40 types match the type of the electronic component 14 that was mounted last time, in step S16, the mounting angle of the electronic component 14 currently being mounted matches the mounting angle of the previous mounting operation. It is decided whether or not to do so.

On the other hand, if it is determined NO in step S14 described above, that is, if it is determined that the type of electronic component 14 currently being mounted does not match the type of electronic component 14 that was previously mounted, In step 31B, the specifications of the electronic component 14 to be clinched stored in the storage device 64 are read, and in step S20, based on the read specification information, the headwind member 16a is
, 16b are the lead wires 14bl, 14b which will be bent by the electronic component 14 currently being mounted.

Both tank dynamic drive motors 42a and 42b are driven and controlled so that the standby position corresponds to the separation distance between the two tanks. Then, when this step 52-0 is completed, the above-mentioned step 1816
Go to and run this.

Here, if it is determined YES in this step 316, that is, if the mounting angle of the electronic component 14 currently being mounted matches the mounting angle of the electronic component that was mounted last time, step S22 Wait for the output of the mounting completion signal from the head mechanism. On the other hand, step S16
If it is determined No in step S, that is, if the mounting angle of the electronic component 14 currently being mounted does not match the mounting angle of the electronic component that was mounted last time, step S
24, the predetermined diameter A of the rotary table 28 is determined based on the mounting angle information already read in step S12.
Lead wires 14b,, 14b that are about to be bent! The rotational drive motor 32 is driven and controlled so as to match the line segment connecting the lines. When this step S24 is completed, the process jumps to the above-mentioned step S22 and executes it.

Then, in step S22, when it is detected that the mounting completion signal has been output from the head mechanism, in step S26, the connection valves connected to each drive cylinder 50a, 50b are opened, and the operation from the drive source is activated. Compressed air is introduced into both drive cylinders 50a, 50b. As a result, the claw members 16a and 16b are moved from the standby position to
They protrude inward from each other, and the corresponding lead wires 14b, , 14tz are bent inward as shown in FIG. In this way, the electronic component 14 mounted on the circuit board 12
By bending the two lead wires 14b and 14b2 inward, the lead wires 14b and 14b2 are clinched to the circuit board 12 so that they cannot be removed.

Then, in step 828, a rod end sensor (not shown) is turned on, and the claw member 16a is turned on.

16b corresponds to lead wires 14bl, 14b! When it is detected that the actuator has protruded enough to bend the actuator, the above-mentioned connection valve is closed in step S30, and the introduction of operating compressed air to the drive cylinders 50a and 50b is stopped. As a result, the claw members 16a, 16b return to the standby position due to the biasing force of a return spring (not shown).

In this way, the series of control operations is completed, and the head mechanism waits for the start of the next electronic component mounting operation.

As detailed above, according to this embodiment, by providing this one clinch device 10, it is possible to reliably clinch electronic components of various shapes, and the cost of the entire mounting device is reduced. In addition to being able to accomplish this, it is also possible to significantly increase the variety of shapes of electronic components that can be mounted with one mounting device.

It goes without saying that the present invention is not limited to the configuration of the one embodiment described above, and can be modified in various ways without departing from the gist of the invention.

For example, in one embodiment described above, the clinch device l
Although the description has been made in the case where two lead wires are bent, the present invention is not limited to such a configuration. For example, the clinch operation can be achieved by bending two or more lead wires. It is something.

Further, in the embodiment described above, the bending connection mechanism 18 has two parts corresponding to the two claw members 16a and 16b, respectively.
Although the present invention has been described as having two drive cylinders 50a and 50b, the present invention is not limited to such a configuration. For example, only one drive cylinder is provided, and the piston rod of this drive cylinder and two claws Members 16a, 16
b may be connected to each other via a connecting mechanism and driven in mechanical synchronization with each other.

Furthermore, in the embodiment described above, the interval changing mechanism 20
has been described as having two sliding drive motors 42a and 42b that slide and drive the two slide bases 38a and 38b corresponding to the two claw members 16a and 16b, respectively, but this one invention: Without being limited to such a configuration, for example, only one sliding drive motor is provided, and the driving force of this sliding drive motor is transmitted to two slide bases 3 via a transmission shaft.
8a, 38b, and both slide bases 38a.

38b may be configured to be slidably driven in mechanical synchronization with each other.

Furthermore, in the embodiment described above, the claw members 16a, 1
Although it has been explained that the lead wires 14b and 14b corresponding to 6b are bent using a rod end sensor that detects the maximum amount of protrusion of the piston rods 56a and 56b, the present invention is not limited to such a configuration. Instead, it may be detected by measuring the protrusion time, or it may be detected using strain sensors attached to the lead wires 14b, 14b2.

Furthermore, in the embodiment described above, the clinch device 10 was described as being equipped with the angle changing mechanism 22.
The present invention is not limited to such a configuration, and, for example, the angle changing mechanism 22 may be configured not to be provided in the clinch device IO but to be provided in a support device that supports the circuit board 12. As a circuit board support device equipped with such an angle changing mechanism, Japanese Patent Application No. 1-2 was filed on September 20, 1999 by the same applicant as the present applicant.
Was it filed as No. 41700? The substrate rotation mechanism j in a turret type mounting machine can be adopted.

[Effects of the Invention] As described in detail above, the clinch device according to the present invention is a clinch device for bending at least two lead wires of an electronic component mounted on a board that penetrate the board and protrude to the opposite side. In the apparatus, at least two claw members each capable of coming into contact with the at least two lead wires passing through the substrate from the outside, and a drive for driving each of the claw members so as to bend the corresponding lead wires. a first changing means for changing the separation distance of the claw members; and a second changing means for changing the arrangement angle of the movement axis of the claw members with respect to a predetermined reference line of the substrate. It is characterized by

Therefore, according to the present invention, a clinching device is provided that can clinch electronic components of various shapes with one clinching device.

Further, according to the present invention, a clinch device is provided that can reduce the cost of the entire mounting device.

Further, according to the present invention, a clinch device is provided that can greatly increase the number of shapes of electronic components that can be mounted with one mounting device.

[Brief explanation of the drawing]

FIG. 1 is a front sectional view schematically showing the structure of an embodiment of the clinch device according to the present invention; FIG. 2 is a front sectional view schematically showing the configuration of an embodiment of the clinch device according to the present invention; FIG. is a side sectional view taken along line II-III in FIG. FIG. In the figure, lO: clinch device, 12: printed circuit board, 12a: through hole, 14: electronic component, 14
a... Main body part, 14b... Lead wire, 16a; 1
6b...Claw member, 18...Bending drive mechanism, 20
... Interval changing mechanism, 22... Angle changing mechanism, 24.
...Base, 26... Bearing, 28... Rotating table, 28a... Driven shaft, 30... Motor mounting plate, 30a... Opening, 32... Rotation drive motor, 3
2a...Motor shaft, 34...Coupling member, 3
6...first guide member, 38a; 38b-
Slide stand, 40a; 40a 2 ; 40b
+; 40 b a-” slide hair ring, 4
2a; 42b...Slide drive motor, 42a+
42ba-motor shaft, 44a; 44b...pole nut, 46a;46b...pole shaft screw, 48
a; 48b...coupling member, 50a; 50
b... Drive silling, 52a; 52b... Single mounting, 54a; 54b... Piston rod, 5
6a, 56b...second guide member, 58
a; 58 b...Sliding member, 60 a; 60
b ; 60 c ・=low reencoder, 62 ・・
- Control unit 64... is a storage device. Figure 2 Figure 3 Figure (A) Figure (B)

Claims (1)

[Claims] (1) In a clinch device for bending at least two lead wires of an electronic component mounted on a board that penetrate the board and protrude to the opposite side, each of the at least two lead wires that penetrate the board at least two claw members that can come into contact with each other from both sides; driving means for driving each of the claw members to bend the corresponding lead wire; first changing means for changing the separation distance of the claw members; A clinch device comprising: second changing means for changing the angle at which the axis of movement of the claw member is arranged with respect to a predetermined reference line of the substrate.