JPS59101892A - Insertion chuck for electronic part inserting machine for printed board - 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 The present invention relates to an insertion chuck for a machine that inserts electronic components for printed circuit boards having terminals such as switches, volume, capacitors, etc. into a printed circuit board. The purpose is to regulate or correct the width and direction between the terminals and ensure that they are inserted 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. It is not desirable because it does not fit well and the product defect rate is 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 the 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 insertion machine for printed circuit boards using the insertion chuck of the present invention.

In the figure, IO is the insertion machine body, 2o is a control box, 3o is an x-y table, 100 is a loading chuck, 2oo is an insertion chuck, 300 is a loading head, and 4oo is an insertion head.

By operating the control box 20, a printed circuit board (not shown) placed on the IcX-Y table 3o is moved, 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.

FIG. 2 shows a detailed mechanical diagram of electronic component delivery 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. .

The loading head 300 has a pinion gear portion 301 formed on the outer periphery of the intermediate portion, an annular groove 302 formed on the upper end, and a roller holder 310 with loans 311 attached at right angles to each other and a spring 320 attached to the upper end. There is.

330, rtz A rack gear that meshes with the pinion gear part 301, which connects the air cylinder 3 through the joint 331.
40, and is also connected via rollers 361 to a drive arm 360 rotatably mounted on a shaft 350 attached to the frame 11 constituting the insertion machine main body 1o. Further, a drive arm 370 rotatably mounted on the same shaft 350 is attached to the annular groove 300 in the loading head 300.
The rollers 371 are connected to each other via two rollers 371 disposed within the rollers 371.

The other ends of these drive arms 360 and 370 slide on cams 520 and 530 for the rope ink head 300 fixed to the shaft 510 via cam followers 362 and 372, respectively. Also on the same axis 510 are a cam 540 and a sprocket 55 for the insertion head 400.
The cams 520, 530, 540 are attached to the chain 560, which is attached to the sprocket 550.
is driven.

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

The insertion head 400 includes a cylindrical spline shaft 410 with splines formed on the outside, and an insertion rod 42 that passes through the shaft 410 and projects upward.
It consists of a joint 440 having an annular groove 441 attached via a spring 430 between the spline shaft 410 and the spline shaft 410 at the upper end of the shaft. The insertion chuck 200 is integrally attached to the lower end of the spline shaft 410 via a chuck holder 450, and rotates around the insertion rod 420 together with a spline bearing 470 by input from a spur gear 460. A spur gear 610 meshes with the spur gear 460, and this spur gear 610 is connected to a drive source 600 such as a stepping motor or an air torque actuator fixed to the -y frame 11. Also, joint 44
The annular groove 441 of 0 has two rollers 481 and 4 diametrically.
82 is disposed and attached to an insertion arm 480, and this insertion arm 480 is supported by a shaft 483 at its rear end, and its tip is movable up and down.

A long hole 484 is formed in the middle portion of the insertion arm 480, and a cam follower 485 that slides in contact with the cam 540 is rotatably mounted therein.

FIG. 3 shows the insertion head 400 in greater detail. 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 pusher 472. Spline bearing 470 and bushing 472 are ball bearings 473 and 474
It is rotatably attached to the frame 11 via. The spline bearing 470 has a stopper nut 47 at the upper end.
6 are screwed together, and the spur gear 460 is fixed in an overlapping relationship, and this spur gear 460 meshes with the spur gear 610, and the drive source 600 fixed to the frame 11 rotates only the necessary rotation angle when necessary. It can be rotated. Further, two nuts 475 are attached to the upper end of the spline shaft 410 to prevent loosening by tightening each other.
A spring 430, which is a resilient member, is interposed between the nut 475 and the joint 440.

Figures 4 to 7 1 = Insertion chuck 200
It is shown in great detail. A through hole 212 having a step 211 is formed in the chuck body 210 along the axis. An operating pin 230 having an insertion tip 220 formed at its tip is inserted into the through hole 212 so as to be movable forward and backward.
The actuating pin 230 is always urged in the retracting direction by interposing a spring 221, which is a resilient member, between the annular stopper 232 attached to the top of the actuating pin 230 by a screw 231 and the step 211. This insertion tip 22
0 has a recess 220a formed at its tip to receive the electronic component 40.

A pair of elastic 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 241 , 242 , 251
, 252 are attached to the chuck body 210 using a cylindrical adapter 243. That is, the cylindrical adapter 2
43 into the chuck body 210, and insert the cylindrical adapter 2 into the chuck body 210.
A pair of terminal guide claws 241° 24 are arranged opposite to each other with the operating pin 230 as the center between the tip of the screw 244 screwed into the lower part of the chuck body 210 and the outer peripheral surface of the chuck body 210.
The terminal guide claws 241 and 242'i are fixed to the chuck body 210 by inserting the base end portions of the terminal guide claws 241 and 242' and tightening the screws 244, respectively. At this time, the cylindrical adapter 243 is also fixed to the chuck body 210.

An operating pin 23 is located inside the terminal guide claws 241 and 242.
A guide groove 245 is formed which extends in the forward and backward direction of the electronic component 40 and corrects and guides the width and direction between the terminals of the electronic component 40.

On the other hand, the pair of terminal guide claws 251 and 252 face each other in a direction perpendicular to the direction in which the pair of terminal guide claws 241 and 242 face each other, and the screws 244 installed in the cylindrical adapter 243 in the same manner as described above are removed. It is fixed to the chuck body 210 by attaching it.

In this way, the terminal guide claws 241, 242 and the case guide claws 251, 252 are attached to the chuck body 24 by screwing the screw 244 of the cylindrical adapter 243.
Since the terminal guide claws 241 and 242 and the case guide claws 251 and 252 that are suitable for the size of the electronic component 40 are prepared in advance, the terminal guide claws 241 and 242 and the case guide claws 251 and 252 that are suitable for the size of the electronic component 40 are prepared in advance. These guide claws 241, 24
2, 251.

252 can be fixed to the chuck body 210 (=.

Next, the operation of the insertion chuck 200 and the insertion machine will be explained.

First, the printed circuit board 50 is set on the X-Y table 30 shown in FIG. 1, and when the control box is operated, the printed circuit board 50 is moved by a drive 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 a rack gear 330 is operated by a cam 520 via a drive arm 360. Insertion chuck 200
Rotate directly below. When this state is reached, the other cam 530 rotates the drive arm 370 around the shaft 350, the roller 371 in the annular groove 302 moves the loading head 300 upward, and the electronic component 40 is moved into the insertion chuck 200. give it to 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. Actuation pin 320 in insertion chuck 200
is biased in the retracting direction by the spring 221 so that the insertion tip 220 is in contact with the bottom of the chuck body 210 δ Next, the electronic component 40 is received from the rotating chuck 100 . At this time, the electronic component 40 first contacts the tips of the terminal guide claws 241 and 242, and then the terminal guide claws 24
1, 242, and at the same time, the case guide claws 251, 252 are also snapped in and held as shown in FIG. These guide claws 241°242,
When the electronic component 40 is snapped into the terminals 251 and 252, the width and direction between the terminals 42 and 42 of the electronic component 40 are corrected by the guide grooves 245 formed in the terminal guide claws 241 and 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 operating pin 230 is in the retracted position within the chuck body 210. Cam 5 driven by chain 560
40 rotates, the cam follower 485 i
The distal end of the insertion arm 480 is at the bottom 9, the entire insertion head 400 slides within the spline bearing 470, and the insertion chuck 200 is lowered to a predetermined position, for example, Imm away from the printed circuit board 50.

At this time, the nut 475 is in the position where it touches the stopper nut 476E, but the nut 475 and the stopper nut 476
By rotating the insertion chuck 20
0 stop position can be adjusted. When the cam 540 rotates further and lowers the insertion arm 480, the insertion rod 420 moves down inside the spline shaft 410 without changing the position of the insertion chuck 200, and the tip moves the operating bottle 230 against the elasticity of the spring 221. Push forward. As the operating bin 230 moves forward, the insertion tip 220 also moves forward, and the insertion tip 220 presses the inside of the terminal guide claws 241 and 242 via the electronic component 40 to slightly open the terminal guide claws 241 and 242. The terminals 42, 42 of the electronic component 40 are inserted into the printed circuit board 50 as shown in FIG.

At this time, the lower end of the insertion tip 220 contacts the inside of the terminal guide claws 241 and 242, and the terminal guide claws 241 and 242 are maintained in an open state.

Note that if the mounting direction of the electronic component 40 to the printed circuit board 50 is different, the drive source is driven to move the spur gear 6 ], 0,
460, spline shaft 4 via spline bearing 470
10f! : Rotate by a predetermined angle to orient the insertion chuck 200 in a desired direction.

Thereafter, when the cam 540 rotates, the tip of the insertion arm 480 rises, and accordingly, the printed circuit board 50
insertion chip 220 from the electronic component 40 attached to the
Case guide claws 251, 252 and terminal guide claws 24
1 and 242 are smoothly separated, and the terminal guide claws 241 and 242 and the case guide claws 251 and 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 automatically continues the work over and over again by subjecting such operations to NC control.

In this embodiment, a cylindrical adapter 24 is attached to the chuck body 210.
3, the terminal guide claws 241, 242 and case guide claws 251, 252, which have elasticity, are positioned and fixed with the screws 244 provided on the cylindrical adapter 243, making it easy to insert the electronic component 40. Viscosity is extremely good.

In addition, since it is fixed with the screw 244, it is easy to fix the terminal guide claws 24], 242 and the case guide claws 251, 252.
can be replaced.

In this embodiment, the positions of the insertion head 400 and the printed circuit board 50 were adjusted using the X-Y table 30, but when moving the insertion head 400 with the printed circuit board 50 fixed, Of course, this invention can also be applied.

As described above, according to the present invention, the configuration includes a chuck body in which a through hole is formed along the axis, and a tip of the chuck body that is inserted into the through hole of the chuck body while being biased in the retracting direction. The chuck has an operating bin equipped with an insertion tip for receiving an electronic component for a printed circuit board, and a guide groove at the tip for correcting the width and direction between the terminals of the electronic component, and is removably attachable to the chuck body and has elasticity. a pair of terminal guide claws facing each other; and a pair of case guides facing each other in a direction perpendicular to the direction in which the pair of terminal guide claws face each other and having elasticity that is detachable from the chuck body and holds the electronic component. Since this is an insertion chuck for a printed circuit board electronic component inserter consisting of two jaws, the electronic component snaps in smoothly by pushing into a pair of terminal guide jaws and a pair of case guide jaws that are fixed to the chuck body. The advantage is that it is possible to hold the electronic component, and also to move the operating bin forward and smoothly release the electronic component from being held by these guide claws.

Further, since it is only necessary to fix the terminal guide claw and the case guide claw 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, so the terminal of the electronic component can be corrected and the electronic component can be accurately and securely placed on the printed circuit board (=
Another advantage is that it can be inserted.

[Brief explanation of the drawing]

Fig. 1 is an overall perspective view of an electronic component insertion machine for printed circuit boards using the insertion chuck of the present invention, Fig. 2 is a perspective view of the main parts showing the operating mechanism of the loading chuck and insertion chuck, and Fig. 3 is the inserter. 4 is a central vertical sectional view of the insertion chuck showing the state before electronic components are held; FIG. 5 is a bottom view showing the insertion chuck before electronic components are held; Fig. 6 is a view similar to Fig. 4 showing the state after holding the electronic component, Fig. 7 is a view similar to Fig. 4 showing a state in which the operating pin operates and the electronic component is inserted into the printed circuit board, and Fig. 8
This figure is similar to FIG. 4, showing the state after the electronic component is inserted into the printed circuit board. DESCRIPTION OF SYMBOLS 10... Insertion machine main body, 40... Electronic components for printed circuit boards, 42... Terminals, 50... Printed circuit boards, 20
0... Insertion chuck, 210... Chuck body, 212... Through hole, 220... Insertion tip, 230... Operating bottle, 241, 242... Terminal guide claw, 245... Guide groove, 251°252...
Case guide claw, 400...Insertion head. Applicant: Alps Electric Co., Ltd. Fig. 4 C L, -420 Fig. 6 C = 42° Fig. 7 420 Fig. 8, 420 C i/-

Claims (1)

[Scope of Claims] A chuck body having a through hole formed along the axis, and an insertion tip that is inserted into the through hole of the chuck body while being biased in a retracting direction, and receives an electronic component for a printed circuit board at its 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; A printed circuit board comprising a pair of elastic case guide claws facing in a direction perpendicular to the opposing direction of the pair of terminal guide claws and capable of being freely attached to and detached from the chuck body and holding the electronic component. Insertion chuck for electronic component insertion machine.