JPH089370B2 - Electronic component carrier - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic component carrying device that holds an electronic component supplied from an electronic component supplying device and conveys it to a processing device such as a taping device.

<Prior Art> Conventionally, as shown in FIG. 4, an electronic component carrying device has been known. This electronic component carrier 30
An index table 31 that is intermittently rotated in the direction of arrow A at a predetermined rotation pitch S is provided. Further, at each position corresponding to the rotation pitch S of the circumference of the indencus table 31, there is one holding tool 32, ... Holding the electronic component M.
They are arranged one after another.

As shown in FIG. 5, each of the clamps 32, ...
A frame member 33 fixed on the index table 31 and a pair of opening / closing members 35, 35 supported by shafts 34, 34 on the frame member 33, respectively. These opening and closing members 35,
The gears 35 are interlocked with each other by gears 36, 36 provided on the respective shafts 34, 34. Further, one end of each opening / closing member 35, 35 is a sandwiching portion 35a, 35a, and a compression spring 37 is interposed between the other end 35b, 35b. In such a holding tool 32, the other end portion 35b of the one opening / closing tool 35 is pressed in the direction of arrow B by a pressing means such as an air cylinder (not shown), so that the holding parts of both the opening / closing tools 35, 35 are held. 35a and 35a open.

Such an electronic component carrier 30 is an electronic component feeder 40.
And another processing device, for example, the taping device 41, and operates as follows.

The electronic components held by the lead frame are sent to the electronic component supply device 40 at a predetermined pitch P1. Then, each electronic component is separated from the lead frame by the electronic component supply device 40, and is supplied to the electronic component supply device 30 as an electronic component with lead terminals (hereinafter referred to as an electronic component) M.

In the electronic component supply device 30, the clamp 32 at a position facing the supplied electronic component M clamps the electronic component M and conveys it in the rotational direction according to the intermittent rotation of the index table 31. The electronic component M is supplied to the taping device 41 after its lead terminals are molded by the forming device 42 arranged in the middle of the transportation process.

The electronic component M supplied to the taping device 41 is sandwiched between the base tape 43 and the adhesive tape 44 at a predetermined pitch P2 and sent to the next step.

<Problems to be Solved by the Invention> By the way, in such an electronic component carrying device 30, one holding tool 32 is provided at each position corresponding to the rotation pitch S of the index table 31. . Therefore, the electronic components M are transported one by one by the intermittent rotation of the index table 31 at each rotation pitch S. Therefore, there is a limit to the number of electronic components M that can be transported by the electronic component transport device 30 within a certain time, and there is a problem that the efficiency of transporting the electronic components M is poor.

On the other hand, by narrowing the rotation pitch S of the index table 31, it is conceivable to increase the number of holding tools 32, ... Arranged corresponding to the rotation pitch S. There is a limit to the number of indexes that can be set in the rotation drive mechanism (not shown), that is, the size of the rotation pitch S. for that reason,
The rotation pitch S could not be narrowed below a certain angle.

Further, it is also considered to increase the number of the clamps 32, ... Arranged at each position corresponding to the rotation pitch S of the index table 31, but this is also related to the pitch of the electronic component M on the receiving side (the above-mentioned. In the example, since the holding pitch P1 of the lead frame and the pitch on the sending side (narrowing pitch P2 of the taping device 41) are different, there is a possibility that the delivery of the electronic component M may be hindered.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object thereof is to provide an electronic component carrying device with good carrying efficiency.

<Means for Solving Problems> In the present invention, in order to achieve such an object, an index table that is intermittently rotated at a predetermined rotation pitch and each position corresponding to the rotation pitch of the index table peripheral portion are provided. The present invention is characterized in that a plurality of sets of gripping tools, which are arranged so that the spacing can be freely changed, and an expansion / contraction mechanism that changes the spacing between the gripping tools of each set are provided.

<Operation> According to the above configuration, on the receiving side of the electronic component, a plurality of electronic components are clamped at the same time by setting the spacing between the clamping tools by the expansion / contraction mechanism to match the supply pitch of the electronic component supply device, These electronic parts are conveyed at every rotation pitch of the index table. And
On the delivery side of the electronic components, a plurality of electronic components are delivered at the same time by adjusting the interval between the clamps to the pitch of the processing device.

<Examples> Hereinafter, the present invention will be described in detail based on Examples shown in the drawings.

FIG. 1 is a schematic plan view of an electronic component carrying device, FIG. 2 is an enlarged plan view of a holding tool portion thereof, and FIG. 3 is II in FIG.
It is a side view which follows the I-III line. In these figures, reference numeral 10 is an electronic component carrying device, 40 is an electronic component supply device, 41 is a taping device, and 42 is a forming device.

The electronic component carrying device 10 includes an index table 11 and holding tools 12, .... Index table 11
Is intermittently rotated in the direction of arrow A at a predetermined rotation pitch S about the shaft 11a by an intermittent rotation drive mechanism (not shown).

As shown in FIGS. 2 and 3, each of the holding tools 12, ... Is arranged in pairs at each position corresponding to the rotation pitch S of the circumference of the index table 11. The distance between these two holding tools 12, 12 is freely changeable, and they are held by a guide rail 13 that is fixed to the circumference of the index table 11 along the direction of close contact thereof. Since each holding tool 12 is basically the same as the holding tool 32 in the conventional example, the same reference numerals are given to the portions corresponding to each other. As a difference, in the present embodiment, a sliding portion 33a to be inserted into the guide rail 13 is formed at the bottom of the frame member 33 of the sandwiching tool 12, and
The roller 14 is provided at the inner end of the frame member 33.
Further, the holding tools 12, 12 are connected to each other by a tension spring 15.

In addition, the electronic component carrying device 10 includes the pair of holding tools 1 described above.
An expansion / contraction mechanism 20 for changing the interval between 2, 12 is provided. The expansion / contraction mechanism 20 includes a fixed cam 21 and a plurality of slider devices 22,
…. The fixed cam 21 is fixedly provided at the center of the index table 11. In the fixed cam 21, the range from the front position of the forming device 42 to the rear position of the taping device 41 is a large diameter part 21a, and the other range is a small diameter part 21b.

On the other hand, the slider devices 22, ... Are respectively arranged on the index table 11 at inner peripheral positions corresponding to the holding tools 12,12. Each slider mechanism 21
The slider rail 23 fixed to the index table 11 along the radial direction and the slider rail 23
And a slider 24 that is slidably held on.

A roller 25 is provided at one end of the slider 24, and the roller 25 rolls on the outer peripheral surface of the fixed cam 21 to move the slider 24 along the slider rail 23. The other end of the slider 24 has a pair of holding tools.
A protrusion 24a inserted between the rollers 12 and 12 is formed, and a tapered portion 24b that widens toward the inner peripheral side is formed on the rear side of the protrusion 24a.

Next, the operation of such an electronic component carrying device 10 will be described.

The electronic component M is supplied from the electronic component supply device 40 to the electronic component transfer device 10 at a predetermined holding pitch P1.

In the electronic component carrying device 10, since the slider 24 inserted between the pair of holding members 12, 12 facing the supplied electronic component M is retracted toward the inner peripheral side, both holding members 12, 12 are held.
The interval is narrower and is the same as the holding pitch P1. Therefore, the pair of holding tools 12, 12 hold one electronic component M each (two in total), and convey the electronic component M in the rotation direction according to the intermittent rotation of the index table 11.

As the index table 11 rotates, the slider 24 rides on the large diameter portion 21a of the fixed cam 21, so that the slider 24 advances in the direction of arrow C. As a result, the tapered portion 24b of the slider 24 and then the roller-side portion 24c thereof are inserted between the both holding members 12, 12, and the distance between them is expanded to the holding pitch P2 of the taping device 41.

In this way, the two electronic components M whose spacing is widened to P2 are supplied to the taping device 41 after their lead terminals are formed by the forming device 42 arranged in the middle of the carrying process. . At this time, the interval between the two holding tools 12, 12 is the holding pitch of the taping device 41 as described above.
Since it is expanded to P2, both clamps 12, 1 at that interval
2 sends two electronic components M to the taping device 41.

The electronic component M supplied to the taping device 41 is sandwiched between the base tape 43 and the adhesive tape 44 at a predetermined sandwiching pitch P2, and sent to the next step.

In the above description, the electronic component supply device is assumed to be continuously supplied with the electronic components held by the lead frame, but is not limited to such an electronic component supply device, for example A large number of electronic components M may be individually supplied like a feeder. In addition, a set of three holding tools may be provided at a position corresponding to the rotation pitch S of the index table, and the interval between these holding tools may be widened by a slider arranged therebetween. The number of clamps provided is not limited to two.

Furthermore, a member such as a slider for increasing the distance is arranged at a predetermined position on the front surface of the forming device or the taping device, and when the clamps of each set face the predetermined position, the member for increasing the distance is moved to the air cylinder. For example, the expansion / contraction mechanism is not limited to the configuration of the embodiment.

<Effects of the Invention> As described above, according to the present invention, it is possible to change the interval between a plurality of electronic components held by a plurality of sets of gripping tools, so that the supply side is adjusted for each rotation pitch of the index table. It is possible to receive a plurality of electronic components at the same pitch as the above-mentioned pitch and to send out these electronic components at the same pitch as the processing side pitch. Therefore, the number of electronic components transported within a fixed time can be increased several times that of the conventional example.
This has the effect of improving the transfer efficiency of the electronic component transfer device.

[Brief description of drawings]

1 to 3 relate to an embodiment of the present invention. FIG. 1 is a schematic plan view of an electronic component carrying device, FIG. 2 is an enlarged plan view of a holding tool portion thereof, and FIG. 3 is a plan view of FIG. It is a side view which follows the III-III line. Further, FIGS. 4 and 5 relate to a conventional example, FIG. 4 is a schematic plan view, and FIG. 5 is an enlarged side view of a holding tool portion thereof. 10 …… Electronic component carrier, 11 …… Index table, 12 …… Clamping device, 21 …… Fixed cam (expansion / contraction mechanism), 24 …… Slider (expansion / contraction mechanism), S …… Rotation pitch, M …… Electronic parts .

Claims (1)

[Claims] 1. An index table which is intermittently rotated at a predetermined rotation pitch, and a plurality of sets of gripping tools which are arranged at respective positions corresponding to the rotation pitch of the index table peripheral portion so that the intervals can be freely changed. An electronic parts transporting device comprising an expansion / contraction mechanism for changing the interval between the clamps of each set.