JPH0121640B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an insertion chuck for a machine that inserts electronic components for printed circuit boards having terminals such as switches, volumes, capacitors, etc. The purpose is to regulate or correct the gap width and direction to ensure secure insertion into the printed circuit board.

Conventional electronic component insertion machines for printed circuit boards, which do not have a mechanism to regulate or correct the width and direction between terminals, cannot inspect or correct even if the width between terminals is out of order, making it difficult to insert electronic components into printed circuit boards. This was not desirable as it did not go well and the product defect rate was high.

In this invention, when an electronic component is supplied to the insertion chuck, the insertion chip, the terminal guide claw, and the case guide claw hold the electronic component, and then the pair of terminal guide claws corrects the width and direction between the terminals. The electronic component is guided and inserted into a predetermined hole position of a printed circuit board.

The present invention will be described below based on drawings showing embodiments of the invention.

An embodiment of the present invention is shown in FIGS. 1 to 11. FIG. 1 shows an overall view of an electronic component inserter for printed circuit boards using the insertion chuck of the present invention. In the figure, 10 is the insertion machine main body, 20
30 is a control box, 30 is an X-Y table, 100 is a loading chuck, 200 is an insertion chuck, 300 is a rotating head, and 400 is an insertion head. A printed circuit board (not shown) placed on the X-Y table 30 is moved by the operation of the control box 20, and electronic components (not shown) passed from the loading chuck 100 to the insertion chuck 200 are placed at appropriate positions on the printed circuit board. inserted into.

FIG. 2 shows a detailed mechanical diagram of electronic component transfer between the loading chuck 100 and the insertion chuck 200. The loading chuck 100 is composed of a fixed finger 101, a movable finger 102, and an air cylinder 103 that operates the movable finger 102 to hold an electronic component (not shown), and is attached to the lower end of the loading head 300 with a screw 104. ing.

The loading head 300 has a pinion gear part 301 on the outer periphery of the middle part and an annular groove 302 on the upper end part.
A roller holder 310 with rollers 311 attached thereto at right angles to each other and a spring 320 are further attached to the upper ends thereof.

330 is a rack gear that meshes with the pinion gear part 301, and is connected to the air cylinder 340 via a joint 331, and a drive arm 360 is rotatably attached to a shaft 350 attached to the frame 11 constituting the insertion machine main body 10. and roller 3
61. Also, the same axis 350
A drive arm 370 rotatably mounted on the loading head 300 is connected to the loading head 300 via two rollers 371 disposed within the annular groove 302.

The other ends of these drive arms 360, 370 are attached to a cam 52 for the loading head 300, which is fixed to the shaft 510 via cam followers 362, 372.
They are sliding at 0,530 respectively. Also coaxial 5
A cam 540 and a sprocket 550 for the insertion head 400 are fixed on the top of the chain 5.
60 drives cams 520, 530, and 540.

On the other hand, the insertion chuck 200 is attached to the insertion head 400 at a position for receiving electronic components from the loading chuck 100.

The insertion head 400 includes a cylindrical spline shaft 410 with a spline formed on the outside, an insertion rod 420 that passes through the shaft 410 and projects upward, and a spline shaft at the upper end of the insertion rod 420. 410 and a joint 440 having an annular groove 441 attached via a spring 430. The spline shaft 410 is connected to the insertion chuck 200 via a chuck holder 450 at its lower end.
is integrally attached and rotates around the insertion rod 420 together with a spline bearing 470 by input from the spur gear 460. Spur gear 460
A spur gear 610 meshes with the drive source 60 such as a stepping motor or an air torque actuator fixed to the frame 11.
Connected to 0. In addition, two rollers 481 and 4 diametrically are installed in the annular groove 441 of the joint 440.
82 is disposed and attached to an insertion arm 480, and this insertion arm 480 is supported at its rear end by a shaft 483, and its tip is movable up and down. Insertion arm 48
A long hole 484 is formed in the middle part of the cam follower 485 that contacts the cam 540 and drives the cam follower 485.
is rotatably mounted.

Insertion head 400 is shown in more detail in FIG. That is, the spline shaft 410 is spline-coupled within the spline bearing 470, and the sleeve 471 is press-fitted into the portion without the spline and is in sliding contact within the bush 472. Spline bearing 470 and bush 4
72 is rotatably attached to the frame 11 via ball bearings 473 and 474.
A stopper nut 476 is screwed onto the upper end of the spline bearing 470, and a spur gear 460 is fixed in an overlapping relationship, and this spur gear 460 is connected to the spur gear 6.
A driving source 600 fixed to the frame 11 allows rotation by a necessary rotation angle when necessary. Also, the spline shaft 41
Two nuts 475 are attached to the upper end of the joint 475 to prevent loosening, and a spring 430, which is a resilient member, is interposed between the nuts 475 and the joint 440.

4-7, insertion chuck 200 is shown in more detail. A through hole 212 having a step 211 is formed in the chuck body 210 along the axis. This through hole 212 has an operating pin 23 with an insertion tip 220 formed at its tip.
0 is inserted so that it can move forward and backward, and the operating pin 230
A spring 221, which is a resilient member, is interposed between the step 211 and an annular stopper 232 attached to the top of the operating pin 230 by a screw 231, so that it is always biased in the retracting direction. This insertion tip 220 has a recess 220a formed at its tip to receive the electronic component 40.

A pair of resilient terminal guide claws 241, 242 and a pair of case guide claws 251, 252 are attached to the lower side surface of the chuck body 210, facing each other. These guide claws 24
1,242,251,252 chuck body 21
The attachment to 0 is performed by a cylindrical adapter 243. That is, the cylindrical adapter 243 is inserted into the chuck body 210, and the tip of the screw 244 screwed into the lower part of the cylindrical adapter 243 and the outer peripheral surface of the chuck body 210 are opposed to each other with the operating pin 230 as the center. A pair of terminal guide claws 24
1,242, respectively, and screw 24
4 by tightening the terminal guide claw 24.
1,242 is fixed to the chuck body 210. At this time, the cylindrical adapter 243 is also fixed to the chuck body 210. Terminal guide claws 241, 2
A guide groove 245 is formed on the inside of 42, extending in the direction of movement of the actuating pin 230, and correcting and guiding the inter-terminal width and direction of the electronic component 40.

On the other hand, the pair of case guide claws 251 and 252 face in a direction perpendicular to the opposing direction of the pair of terminal guide claws 241 and 242, and are used to tighten the screw 244 provided on the cylindrical adapter 243 in the same manner as described above. Therefore, it is fixed to the chuck body 210.

In this way, the terminal guide claws 241, 242 and the case guide claws 251, 252 can be freely attached to the chuck body 210 by screwing the screw 244 of the cylindrical adapter 243. Terminal guide claws 241, 242 and case guide claws 251, 25 that match the size of the component 40
2 are prepared in advance, these guide claws 241, 242, 25 that match the size of the electronic component 40 can be used.
1,252 can be secured to the chuck body 210.

Next, such an insertion chuck 200
and the operation of the insertion machine.

First, the printed circuit board 50 is set on the X-Y table 30 shown in FIG. 1, and when the control box 20 is operated, the printed circuit board 50 is moved by a driving source such as a stepping motor (not shown).

On the other hand, the loading chuck 100 holds an electronic component 40 from a component supply section (not shown) between a fixed finger 101 and a movable finger 102 by operating an air cylinder 103, and loads the electronic component 40 into a rack gear via a drive arm 360 by a cam 520. 330 works and rotates directly below the insertion chuck 200. When this state occurs, the other cam 5
30 rotates the drive arm 370 about the axis 350, and the roller 371 in the annular groove 302 moves the loading head 300 upwardly, passing the electronic component 40 onto the insertion chuck 200. Thereafter, the loading chuck 100 is once lowered, rotated back to the original component supply position, and waits for the next electronic component 40 to be supplied.

At this time, the insertion head 400 is in the raised position. The operating pin 320 in the insertion chuck 200 is biased in the retracting direction by a spring 221 so that the insertion tip 220 is in contact with the bottom of the chuck body 210.

Next, the electronic component 40 is received from the loading chuck 100. At this time, first, the electronic component 40
comes into contact with the tips of the terminal guide claws 241, 242,
Next, it is snapped into the terminal guide claws 241, 242, and at the same time, it is also snapped into the case guide claws 251, 252, so that it is held as shown in FIG. These guide claws 241, 242, 251,
When the electronic component 40 is snapped into the terminal 252, the width and direction between the terminals 42, 42 of the electronic component 40 are corrected by the guide grooves 245 formed in the terminal guide claws 241, 242.

When the insertion chuck 200 is in the state shown in FIG. 4, the insertion head 400 is in the raised position as shown in FIG. 3, and the actuation pin 230 is in the retracted position within the chuck body 210. When the cam 540 is rotated by the drive of the chain 560, the tip of the insertion arm 480 is lowered by following the cam follower 485, and the entire insertion head 400 slides inside the spline bearing 470 and lowers, and the insertion chuck 200 is printed. It is lowered to a predetermined position, for example, 1 mm away from the substrate 50.

At this time, the nut 475 is connected to the stopper nut 47.
By rotating the nut 475 and the stopper nut 476, the stopping position of the insertion chuck 200 can be adjusted.
When the cam 540 rotates further and lowers the insertion arm 480, the insertion chuck 20
The insertion rod 420 moves down inside the spline shaft 410 without changing the position 0, and its tip pushes the operating pin 230 forward against the elasticity of the spring 221. As the actuating pin 230 moves forward, the insertion tip 220 also moves forward, and the insertion tip 22
0 is connected to the terminal guide claw 241 via the electronic component 40,
242 and slightly press the inside of the terminal guide claw 24.
While opening 1,242, connect the terminals 42, 42 of the electronic component 40 to the printed circuit board 50 as shown in the seventh figure.
Insert into. At this time, the lower end of the insertion tip 220 is in contact with the inside of the terminal guide claws 241, 242, and the terminal guide claws 241, 242 are maintained in an open state.

Note that when the mounting direction of the electronic component 40 on the printed circuit board 50 is different, the insertion is performed by driving the drive source to rotate the spline shaft 410 by a predetermined angle via the spur gears 610, 460 and the spline bearing 470. Point the chuck 200 in the desired direction.

Thereafter, when the cam 540 rotates, the tip of the insertion arm 480 rises, and accordingly, the insertion chip 220 and the case guide claws 251, 2 are removed from the electronic component 40 attached to the printed circuit board 50.
52 and the terminal guide claws 241, 242 are smoothly separated, and the terminal guide claws 241, 242 and the case guide claws 251, 252 return to their original states again, performing the reverse of the insertion operation and returning to the state shown in FIG. 3. .

In this way, one cycle of inserting the electronic component 40 is completed. The insertion machine continues to work repeatedly and automatically by controlling these operations using NC.

In this embodiment, the chuck body 210 is provided with a terminal guide claw 2 which is provided with elasticity by means of a cylindrical adapter 243.
41, 242 and case guide claws 251, 252
Since the electronic component 40 is positioned and fixed with the screw 244 provided on the cylindrical adapter 243, the insertion accuracy of the electronic component 40 is extremely high.

In addition, since it is fixed with the screw 244, it is easy to connect the terminal guide claws 241, 242 and the case guide claw 25.
1,252 can be exchanged.

In this embodiment, although the position of the insertion head 400 and the printed circuit board 50 was adjusted using the X-Y table 30,
Of course, the present invention can also be applied to a case where the printed circuit board 50 is fixed and the insertion head 400 is moved.

As explained above, according to this invention,
The structure consists of a chuck body with a through hole formed along the axis, and an insertion chip inserted into the through hole of the chuck body while being biased in the retracting direction, and an insertion chip for receiving printed circuit board electronic components is attached to the tip. a pair of opposing terminal guide claws that are removably attachable to the chuck body and have elasticity and have guide grooves at their tips for correcting the width and direction between the terminals of the electronic component; and the pair of terminals. An insertion machine for an electronic component insertion machine for a printed circuit board, comprising a pair of resilient case guide claws that face in a direction perpendicular to the direction in which the guide claws face and hold the electronic component removably in the chuck body. Since the chuck is used as a chuck, the electronic component is pushed into a pair of terminal guide claws and a pair of case guide claws fixed to the chuck body, allowing the electronic component to be snapped into the chuck and held smoothly, as well as to move the operating pin forward. An effect can be obtained in that the holding of the electronic component by these guide claws can be smoothly released.

Further, since it is only necessary to fix the terminal guide pawl and the case guide pawl to the chuck body, the structure is simple, the number of parts is reduced, and the cost of the insertion machine can be reduced.

Furthermore, a guide groove is provided at the tip of the terminal guide claw to correct the width and direction between the terminals of the electronic component.
Another effect is that the terminals of the electronic component can be corrected and the electronic component can be accurately and reliably inserted into the printed circuit board.

[Brief explanation of drawings]

FIG. 1 is an overall perspective view of an electronic component inserter for printed circuit boards using the insertion chuck of the present invention, and FIG. 2 is a perspective view of essential parts showing the operating mechanism of the loading chuck and insertion chuck.
Figure 3 is a central vertical sectional view of the insertion head.
Figure 4 is a central vertical sectional view showing the insertion chuck before it holds electronic components, Figure 5 is a bottom view of the insertion chuck before it holds electronic components, and Figure 6 is the electronic component. Figure 7 is a diagram similar to Figure 4 showing the state after being held;
FIG. 8 is a diagram similar to FIG. 4, showing a state after the electronic component is inserted into the printed circuit board. 10... Insertion machine main body, 40... Electronic components for printed circuit board, 42... Terminal, 50... Printed circuit board, 200... Insertion chuck, 210
...Chuck body, 212...Through hole, 220...
...Insertion tip, 230...Operating pin, 241,2
42...Terminal guide claw, 245...Guide groove, 25
1,252...Case guide claw, 400...Insertion head.

Claims (1)

[Scope of Claims] 1. A chuck body having a through hole formed along the axis, and an inserter that is inserted into the through hole of the chuck body while being biased in the retracting direction, and receives an electronic component for a printed circuit board at its tip. an actuating pin to which a chip is attached; a pair of opposed terminal guide claws that are removably attached to the chuck body and have a guide groove at the tip for correcting the width and direction between the terminals of the electronic component; A print characterized by comprising a pair of resilient case guide claws facing in a direction perpendicular to the direction in which the pair of terminal guide claws face each other and capable of being freely attached to and detached from the chuck body and holding the electronic component. Insertion chuck for electronic component inserter for circuit boards.