JPH0639018B2 - Electronic parts automatic feeder - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an apparatus for automatically supplying electronic components to be mounted on a printed circuit board, and particularly for storing odd-shaped electronic components in a stick (cartridge). The present invention relates to a device for automatically supplying electronic components suitable for supplying to an automatic insertion machine.

[Conventional technology]

An insert machine that chucks electronic parts by an automatic insertion machine and then conveys them to a predetermined position on a printed circuit board and inserts the electronic parts into the printed circuit board requires a supply device for supplying various electronic parts to the automatic insertion machine. It is said that

FIG. 6 is a perspective view showing an outline of an apparatus showing an example of such an electronic component supplying apparatus, where 1 is an inclination of about 35 °, and sticks 2a, 2B, 2c,
.. are stacked, 3 is a stick carrier, 4 is an escapement, and 5 is a slider.

One type of electronic component is a plurality of sticks 2a, 2b, 2
The stick stack is mounted on the support base 1 for each type of electronic component (only one type is shown in this figure).

Then, due to the inclination of the support base 1, the electronic components in the lowermost stick 2a move forward in the stick 2a by its own weight and stop at the position of the escapement 4.

The slider 5 retracts to take out the electronic components one by one descending to the position of the escapement 4 and advances to and stops at a chucking position of an automatic insertion machine (not shown).

In this manner, when the electronic components are taken out one by one and the lowermost stick 2a is emptied, the emptied stick 2a is raised by a DC solenoid (not shown) and is horizontally pulled out and supported by the operation of the cylinders 6 and 7. Drop it under the table 1.

Then, the new stick 2b containing the electronic parts is lowered, and the electronic parts therein are continuously transferred to the escapement 4.

[Problems to be solved by the invention]

Such an electronic component supply device can supply a large number of electronic components to the automatic insertion machine while automatically exchanging a plurality of sticks 2a, 2b, 2c, ..., However, there are drawbacks as described below. .

1) Since the sticks 2a, 2b, 2c, ... Are made of plastic or the like, their accuracy is poor, and electronic parts are often caught at the stick outlet, resulting in poor work efficiency.

2) The length of the sticks 2a, 2b, 2c, ... Is limited, and the stock of electronic parts is small.

3) It is difficult to replenish electronic parts (sticks) during operation.

4) In the case of an electronic component having a plurality of lead legs, there is no space for adding a lead straightening mechanism, so that there are cases in which good insertion is not performed by the automatic insertion machine.

The present invention provides an automatic supply device for electronic parts capable of solving such a problem, and even when stick accuracy is poor, the supply of electronic parts is smoothly performed, and the stick can be easily replaced. Moreover, many sticks can be attached.

In addition, a correction mechanism is added to the supply device so that it can handle odd-shaped electronic components.

[Means for solving problems]

The stick containing the electronic parts is mounted on the platen (stick cassette) that is formed with high accuracy, then mounted on the stick holder, and stands vertically on the base of the electronic parts supply device. Will be placed. Then, the four stick changers are shifted so as to be sequentially replaced in the stick holder. When all the sticks of one type in the stick holder become empty, one stick is left and the other sticks can be pulled out and replaced.

In addition, below the base on which the stick holder is placed, a chute part where several electronic parts are stocked and one electronic part is pulled out from this chute part and straightened, then to the chucking position of the automatic insertion machine. A work member to be moved is provided.

[Action]

For multiple stick holders mounted on the base,
A large number of stick groups containing the same type of electronic components are arranged, and the sticks in each stick holder are
When the electronic components are emptied, they are pushed out from the first row to the second row side, and are further controlled so as to move backward.

Then, a new stick is pushed out to the front row of the electronic component supply device to continuously supply electronic components.

The empty stick group is configured such that the stick holder is separated from the base so that the stick holder can be collectively removed.

In addition, a plurality of electronic components that fall from the base are stocked in the chute portion, and are taken out one by one by a shutter or an escapement. Then, after the lead legs of the component are corrected, they are transferred to the chucking position by the work member.

〔Example〕

FIG. 1 is a perspective view best showing the features of the automatic electronic component supply apparatus of the present invention. 10 is a base, 11a ₁ ...
11a _n , 11b _{1 to} 11b _n , and 11c _{1 to} 11c _n represent a large number of stick (magazine) groups arranged in a two-row column on the upper surface of the base 10, and each stick group 11
_{a 1 ~11a n, 11b 1 ~11b} n, 11c 1 ~11
same kind of electronic components is accommodated in each c _n.

It should be noted that the electronic components housed in each stick 11 mainly include a resistor, a diode, and a capacitor that are held by taping, which is slightly larger than an IC, a capacitor, a coil, and the like.

As shown in FIG. 2, each stick 11 is attached to a substantially square stick cassette 12, 12, ...
1a _{1 to} 11a _n , 11b _{1 to} 11b _n , 11c ₁ to 1
1c _n is a plurality of stick holders 13, 13 at each two rows Jutai, are mounted on .... The stick cassette 12 is, for example, a BMC (Bulk) with high molding accuracy.
Molded compound) and slippery, and
Used to improve positioning accuracy.

In FIG. 1, 14 is the first stick pusher for pushing back the sticks 11a ₁ , 11b ₁ , 11c ₁ , ... In the front row, which have been supplied with the components, in the front row. Stick 1 in the 1st row parts supply
When 1a ₁ , 11b ₁ , 11c ₁ , ... are emptied, the stick changers 16, 16, ... which are pushed laterally, that is, the second row side which is the right direction in FIG. The second stick pusher 17 pushes the sticks 11 in the first row forward, and 17 is a stick changer that moves the sticks 11 pushed out from the front in the second row to the first row.

The circulation operation of each stick will be described below.

Stick 11a _{1 in} the first row of the front row, during the parts supply
The first stick pusher 1 pushing out the stick cassette 12 when (11b ₁ , 11c ₁ ) becomes empty.
4, the stick changer 15 is moved by the lateral width of the stick cassette 12, and the empty front row stick 11a ₁ is shifted to the right side in the drawing to move from the first row to the second row. Moving. Then, the stick changer 16 pushes the rearmost stick cassette 12 in the first row forward, so that the entire stick group in the first row moves forward, and the stick 11a ₁
The next stick 11a ₂ to which the electronic parts are replenished is located at the partial supply position after the movement of.

Further, the second row of the stick group is wholly moved to the rear side of the base 10 by the first stick pusher 14, and then the stick cassette 12 at the rearmost side of the stick group of the second row is attached to the stick changer 17. Move by the width of the cassette (move to the left in the figure) by.

Hereinafter, every time the stick at the component supply position becomes empty, the above sequence operation is performed for each stick holder 1.
It will be repeated within 3, 13, ....

These stick changers 15, 17, first and second
Although not shown, the stick pushers 14 and 16 are driven at predetermined timings by electromagnetic solenoids or actuators operated by compressed air or the like.

Stick 11a in the front row supplying electronic parts
_In the lower part of each of ₁ , ₁ , 11b ₁ , 11c ₁ , ...
As shown in the figure, a chute portion 18 for stocking parts is arranged, and a shutter mechanism 19 or an escapement is provided on the bottom surface thereof.

Further, below the chute portion 18, there is provided a work member 20 for chucking electronic components that drop one by one by a shutter mechanism 19 and transporting the chucked electronic components to a chucking position of an automatic insertion machine.

The work member 20 is approximately 90 degrees centered on the support shaft 21.
A straightening device 22, which will be described later, is provided on the distal end portion.

Since the electronic component supply apparatus of the present invention is structured as described above, a plurality of stick holders 13 are provided on the base 10, and sticks of a two-row column mounted on the stick holders 13. Groups 11a _{1 to} 11a _n , 1
1b _{1 to} 11b _n , 11c _{1 to} 11c _n , ... Are arranged. Then, only _one stick 11a ₁ , 11b ₁ , 11c ₁ , ... In the front row of the first row of the two-row column faces the chute portion 18 provided on the lower side, and the stick 11a ₁ , 11b ₁ , 11c ₁ , ... Only the electronic components housed in a stacked state are passed through the stick cassettes 12 and fall onto the chute portion 18 located below the stick cassettes 12, respectively.

Several dropped electronic components are stocked in the chute portion 18, and when the work member 20 returns to the vertical position as shown in FIG. 3, the shutter mechanism 19 is driven to catch one electronic component by the work member 20. Then, as will be described later, a straightening device 22 provided at the tip of the work member 20 corrects the lead leg or the like to a predetermined size position, and when the work member 20 is rotated 90 °, chucking of the automatic insertion machine is performed. Transferred to a position.

In this way, the sticks 11a ₁ and 11b in the front row are
₁ , when the electronic components in 11c ₁ become empty, a signal output from a detection mechanism (not shown) causes the empty stick 11a _{1 to} be in the first row of the two-row column (left side in FIG. 1).
To the second row side (right row) from the stick changer 15
And is further pushed rearward by the operation of the first stick pusher 14. In addition, the first row of component supply positions vacated by this operation, that is, the positions where the sticks 11a ₁ , 11b ₁ , and 11c ₁ were initially located, are moved to the first position by the stick pusher 16 at the rear.
By pushing the whole row forward, the next stick 11a ₂ moves, and at the empty stick position in the last row of this first row, the stick pushed backward in the second row becomes the second stick. It is pushed out laterally by the changer 17.

Therefore, the emptied sticks are sequentially pushed out from the front row of the first row to the second row, and again from the rear of the second row to the first row.
It moves to the rear of the row and is moved to the front side of the first row.

When this moving sequence is repeated several times, the stick group (11a ₁
˜11 a _n ), except for the stick in the component supply position, is emptied, so the rear actuator to which the second stick pusher 16 and stick changer 17 at the rear are fixed is emptied. The stick holder 13 on which the stick group is mounted is removed from the base 10, and each stick holder 13 is replaced with a stick group containing a new electronic component to replace the stick 1 on the base 1.
Return to 0.

It should be noted that this replacement is performed with _one stick 11a ₁ in the front row supplying the parts remaining, so that electronic parts are supplied from the stick 11a _{1 in} the front row during the replacement period. There is no need to stop the operation of the electronic component supply device.

4 (a) and 4 (b) are perspective views showing the main part of the straightening device 22 in the work member 20 as seen from two directions, where 30 is a cut portion of the chute portion 18 of the electronic component, and 31 is the fall of the component. , 32 is a solenoid for activating an escapement 33 used in place of the shutter mechanism 19, 34 is a straightening roller, 35 is a stopper, 36 is a cylinder, 37 is an electronic component (small volume) that has dropped. , 38 are slide guides, and 39 is a straightening cam.

4 (b) shows that the cutting portion 30 and the escapement 33 of the chute portion 18 are removed, the slide guide 38 is retracted, and the electronic component 37 is rotated to the chucking position of the automatic insertion machine. Reference numeral 40 denotes an opening / closing cam that moves the slide guide 38.

The opening / closing cam 40 is fixed to the support shaft 21, and its cam surface 4
The roller 38 provided on the slide guide 38 at 0a
It is biased by a spring 38b so that a is in pressure contact.

Therefore, the slide guide 38 moves in the direction of the arrow when the work member 20 is in the vertical position to receive the electronic component 37, and the electronic component 37 is exposed at the position shown in FIG. It is grasped by a chucking device of an automatic insertion machine (not shown) and moved to a predetermined position on the printed circuit board.

Next, the operation of the correction device 22 will be described.

The electronic parts 37 (7 to 8 pieces) stocked in the chute portion 18 on the lower side of the base 10 are moved one by one by the escapement 33 operated by the solenoid 32 of FIG. Sent to the top. In this state, the straightening cam 39 advances and the two straightening rollers 34,
When it is interrupted between 34, the support rod 34a of the correction roller 34,
34a (FIG. 4 (b)) is opened, and the lead legs 37a of the electronic component 37 are opened to a predetermined width. When the work member 20 is rotated 90 ° by the operating rod 24 shown in FIG. 3, the roller 38a is in contact with the cam surface 40a at this time,
The slide guide 38 moves in the direction of arrow A to move the electronic component 37.
Is exposed.

When the electronic component 37 is sandwiched from the left and right by an automatic inserter (not shown), the lead legs 37a are mounted on the printed circuit board with a predetermined distance.

The above embodiment shows one example of the straightening device 22, but is an electronic component, for example, a coil (IFT) having many lead legs 37a.
In such a case, as shown in FIG. 5, the lead straightening plate 41 having the holes 41a and 41a having the standard lead leg size is attached to the tip portion of the work member 20, and the electronic component (IFT ) 37 is pressed against the lead straightening plate 41 by the pusher 42, the electronic component (IF
T) The foot 37 is inserted into the holes 41a, 41a to correct the lead foot 37a.

In this case, it goes without saying that the hole 41a of the lead straightening plate 41 has a tapered shape on the input side.

Then, the work member 20 rotates and is transferred to the chucking position of the automatic insertion machine.

As described above, for different electronic components, different correction devices 22 are attached to the tip of the work member 20.

〔The invention's effect〕

As described above, since the electronic component automatic supply device of the present invention has the structure as described above, the stick cassette is mounted even when the dimensional accuracy of the stick in which the electronic component is stored is poor. , Its movement position is accurately controlled, and the electronic component is smoothly dropped due to its own weight.

Also, since the stick group can be collectively replaced by the stick holder, replacement work is easy,
Moreover, it is not necessary to stop the operation of the component supply device during this replacement work.

Further, since the work member is provided with the straightening device, it is possible to automatically insert odd-shaped electronic components with a very high probability.

Further, the length of the stick is not limited, so that a large number of electronic components can be supplied.

[Brief description of drawings]

FIG. 1 is a perspective view showing an electronic component automatic supply apparatus of the present invention, FIG. 2 is a perspective view showing a stick mounting portion of the present invention, and FIG. 3 is a side view of an electronic component extracting portion of the present invention. (A) and (b) are perspective views showing the main part of the straightening device in the work member as seen from two directions, FIG. 5 is a perspective view of another embodiment showing the lead straightening part, and FIG. It is a perspective view of a component supply apparatus. In the figure, the base _{10, 11a 1 ~11a n, 11b} 1 ~1
1b _n , 11c _{1 to} 11c _n are a large number of stick groups (magazines) arranged in a two-row column on the upper surface of the base, 12
Is a stick cassette, 13 is a stick holder, 14
Is a first stick pusher, 15 and 17 is a stick changer 16 is a second stick pusher, 18 is a chute portion, 19 is a shutter mechanism, 20 is a work member, 2
1 is a spindle, 22 is a straightening device, 23 and 24 are operating rods, 30
Is a cutting portion of the chute, 31 is a photoelectric element, 32 is a solenoid, 33 is an escapement, 34 is a straightening roller, 3
5 is a stopper, 36 is a cylinder, 37 is an electronic component, 38
Is a slide guide, 39 is a straightening cam, 40 is an opening / closing cam,
40a is a cam surface and 41 is a seed straightening plate.

Claims (2)

[Claims] 1. A stick holder for mounting a stick group, in which a stick cassette is mounted at an outlet for an electronic component stored in a stick, in a two-row column, and a base for mounting a plurality of the stick holders, Equipped with a plurality of work members that are provided on the lower side of the base and that move the electronic parts that fall from the sticks in the front row of the stick group to the chucking position of the automatic insertion machine, and become empty when the electronic parts fall. An automatic supply device for electronic parts, wherein a drive mechanism for circulating the stick in the stick holder when the stick is detected is provided on the base. 2. A stick holder for mounting a stick group, in which a stick cassette is mounted at an outlet for an electronic component stored in a stick, in a two-row column, and a base for mounting a plurality of the stick holders, A plurality of work members that are provided on the lower side of the base and that move the electronic components that fall from the sticks in the front row of the stick group to the chucking position of the automatic insertion machine; and the work members that are provided on the work member. A drive that circulates the stick in the stick holder when a stick emptied by the fall of the electronic component is detected, provided with a correction mechanism for correcting the lead leg distance of the electronic component immediately before the rotation of the electronic component. An automatic feeder for electronic components, wherein a mechanism is provided on the base.