JP4837373B2 - Work transfer device - Google Patents

Description

  The present invention relates to a workpiece transfer device that stores and transfers a workpiece such as a chip-type electronic component in a workpiece storage hole provided in a turntable, and particularly eliminates a workpiece stored in an incomplete state in the workpiece storage hole. The present invention relates to a workpiece transfer device capable of

  5 (a) and 5 (b) are diagrams showing a prior art work transfer device, and FIGS. 6 (a) and 6 (b) are diagrams showing another prior art work transfer device. 5A is a front view of the workpiece transfer device, FIG. 5B is a side view thereof, FIG. 6A is a front view of the workpiece transfer device, and FIG. 6B is a side view thereof.

  5 (a) and 5 (b), a plurality of work storage holes 4 are provided at the peripheral edge of the turntable 3 that rotates intermittently on the base 2, and the work 20 is stored in the work storage holes 4 and conveyed. During this time, if the workpiece 20 is not properly stored in the workpiece storage hole 4, it is impossible to perform measurement correctly in the next process, for example, an electrical characteristic measurement unit. Moreover, there is a possibility that the measuring device may be damaged by the workpiece 20, and therefore, the workpiece 20 needs to be discharged before being transferred to the next process.

  Therefore, as shown in FIGS. 5A and 5B, a wiper 32 is provided on the upper plate 16 installed on the turntable 3 so as to be orthogonal to the turntable 3 via the wiper block 31. 32, the workpiece 20 that is not completely stored in the workpiece storage hole 4 is scraped out.

  However, since the wiper 32 is disposed with a slight gap from the surface of the turntable 3, the wiper 32 does not reach the inside of the recess 4a at the periphery of the work storage hole 4, and therefore remains in the recess 4a and stores the work. The workpiece 20 that is not completely stored in the hole 4 cannot be discharged outward.

  Further, as the material of the wiper 32, since a relatively soft material, for example, a resin sheet is used so as not to scratch the workpiece 20, abrasion holes 32a are generated in the wiper 32 due to wear by the workpiece 20, It is necessary to change the wiper 32 frequently.

  6 (a) and 6 (b) show a brush 33 provided to eliminate the workpiece 20 remaining in the recess 4a and to reduce wear caused by the workpiece 20. FIG. 6A and 6B, since the brush 33 is set to a length that reaches the inside of the recess 4a, it is possible to exclude the workpiece 20 remaining in the recess 4a. Further, since the hair constituting the brush 33 is flexible, the work 20 is not damaged such as scratches. However, since the bristle of the brush 33 has low rigidity and the hair easily escapes from the work, it is difficult to remove the work 20 sufficiently, and the removed work may remain in the hair.

  The present invention has been made in consideration of the above points, and provides a workpiece transfer device that can reliably discharge a workpiece stored in an incomplete state in a workpiece storage hole to the outside. Objective.

The present invention relates to a workpiece transfer device for transferring a workpiece, a vertically arranged base, a turntable that is rotatably provided on the base and has a plurality of work storage holes arranged circumferentially at a peripheral portion, and a turntable provided Le, a work supply section for supplying a work to the work receiving hole of the turntable, is provided a workpiece supply section downstream of the turntable above the workpiece supply unit, an incomplete condition workpiece storage hole The wiper that returns the workpiece to the workpiece supply unit by dropping the workpiece stored in the workpiece and dropping it, and the wiper downstream of the turntable and above the wiper, receiving the workpiece removed by the wiper, a blade mechanism for returning the workpiece to the workpiece supply section by dropping the workpiece, the wiper and the wiper body, the wiper body Is a work transfer apparatus characterized by having a number of teeth of resilient material provided over down table side.

  The present invention is the workpiece transfer device, wherein the blade mechanism is composed of a plurality of blades.

  The present invention is the workpiece transfer device characterized in that the numerous tooth portions of the wiper extend linearly in a direction inclined with respect to the tangential direction of the arrangement circle of the workpiece storage hole.

  As described above, according to the present invention, since the wiper has the wiper body and a large number of teeth made of an elastic material, the teeth can reliably scrape out a workpiece that cannot be completely stored in the workpiece storage hole. be able to. At this time, the work is not damaged by the wiper, and the wiper side is not worn.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 thru | or FIG. 4 (a) (b) is a figure which shows one Embodiment of the workpiece conveyance apparatus by this invention.

  As shown in FIG. 1 to FIG. 4A and FIG. 4B, the workpiece transfer device 1 performs various electrical measurements on the workpiece 20 while transferring the workpiece 20.

  Such a workpiece transfer device 1 is provided with a base plate 2 arranged in a vertical direction, and is rotatably provided on the base plate 2 in the direction of arrow L, and a plurality of workpiece storage holes 4 are arranged circumferentially on the peripheral edge. The turntable 3 includes a work supply unit 9 that is provided in the vicinity of the turntable 3 and supplies the work 20 into the work storage hole 4 of the turntable.

  The base 2 is provided with a cover ring 6 positioned on the outer edge of the turntable 3 and a guide 7 for guiding the turntable 3.

  Further, the base plate 2 is provided with an upper plate 16 spaced apart from the turntable 3, and the surface of the upper plate 16 on the turntable 3 side faces the downstream side in the travel direction of the turntable 3 of the work supply unit 9. The wiper block 13, the guard sheet block 11, and the sensor block 10 are fixed in order.

  A plate-like wiper 14 and a plate-like first blade 15 are attached to the wiper block 13, and a plate-like second blade 12 is attached to the guard seed block 11. Further, the sensor block 10 is provided with a light receiving portion 17a, and the substrate 2 is provided with a light projecting portion 17b opposite to the light receiving portion 17a, and the presence or absence of the work 20 in the work accommodation hole 4 by the light from the light projecting portion 17b. Is supposed to be detected.

  The first blade 15 and the second blade 12 constitute a blade mechanism.

  The workpiece supply unit 9 is supplied with a workpiece 20 from a workpiece supply mechanism (not shown) via the distribution shooter 8.

  The plurality of work storage holes 4 provided in the turntable 3 are provided in two rows of concentric circles, and each work storage hole 4 communicates with a negative pressure supply means provided in the base 2 via a suction groove 5. Thus, the workpiece storage hole 4 is made negative pressure to hold the workpiece 20.

Further, a recess 4a is formed in the periphery of the work storage hole 4, and the work 20 that could not be completely stored in the work storage hole 4 is assumed to be caught in the recess 4a . In FIG. 2, the turn plate 3 side surface of the upper plate 16 provided apart from the turn table 3 as described above is directed forward (downstream) in the travel direction of the turn table 3 of the work supply unit 9. The wiper block 13, the guard sheet block 11, and the sensor block 10 are sequentially fixed. The wiper 14 provided on the wiper block 13 is orthogonal to the surface of the turntable 3, and the first blade 15 provided on the wiper block 13 and the second blade 12 provided on the guard seat block 11 are also included in the turntable 3. It is orthogonal to the surface.

  As shown in FIG. 3, the wiper 14 is made of an elastic material as a whole, and is provided on the wiper body 14b and the turntable 3 side of the wiper body 14b. And a tooth portion 14a. Among these, the tip of each tooth portion 14a is set to a length in contact with the recess 4a on the periphery of the work storage hole 4. The tooth portion 14a of the wiper 14 is formed by providing a number of cuts on the distal end side of the wiper body 14b. The wiper 14 having such a configuration is formed in a plate shape, and a large number of tooth portions 14a of the wiper 14 also extend linearly.

  Further, the wiper 14 is arranged such that a large number of tooth portions 14a extend in a direction inclined with respect to the tangential direction of the arrangement circle (two rows of circles) 4b of the work storage hole 4. The tips of the first blade 15 and the second blade 12 are arranged so as to be parallel to the surface of the turntable 3 and slightly in contact with or slightly separated from the surface of the turntable 3.

  As shown in FIG. 2, a light receiving portion 17a is provided on the sensor block 10 side, and a light projecting portion 17b is provided on the base 2 side with the turntable 3 interposed therebetween. The light receiving portion 17a and the light projecting portion 17b store the work. A sensor 17 that detects the presence or absence of the workpiece 20 in the hole 4 is configured.

  Next, the operation of the present embodiment having such a configuration will be described.

  In FIG. 1, a workpiece 20 supplied from a workpiece supply means (not shown) is supplied to the workpiece supply unit 9 of the turntable 3 by the distribution shooter 8, and the workpiece 20 is then transferred from the workpiece supply unit 9 to the workpiece storage hole of the turntable 3. 4 is accommodated. At this time, the workpiece storage holes 4 are made negative pressure by communicating with a negative pressure supply means (not shown) by the suction grooves 5, and the workpieces 20 are separated into the workpiece storage holes 4 one by one and stored by suction. When the workpiece 20 is stored in the workpiece storage hole 4, the turntable 3 rotates intermittently in the direction of the arrow L, and the workpiece 20 is conveyed to the next step, for example, an electrical characteristic measurement unit (not shown). During this time, as shown in FIG. 2, the work 20 may not be properly stored in the work storage hole 4 due to some factors such as a dimension failure of the work 20 and a suction failure of the work storage hole 4. In this case, the incompletely stored workpiece 20 a that is not properly stored in the workpiece storage hole 4 is scraped and dropped from the workpiece storage hole 4 due to the elasticity of the tooth portion 14 a of the wiper 14, and is returned to the workpiece supply unit 9.

  The scraping action of the incompletely stored workpiece 20a will be described in more detail with reference to FIGS. 4 (a) and 4 (b).

As shown in FIG. 4 (a), the incomplete storage work 20a is caused by the teeth 14a of the wiper 14 as they are scraped by the wiper 14, it tries to scatter in the direction indicated by the arrow L _1, the wiper 14 The first blade 15 provided on the downstream side suppresses the scattering of the incompletely stored workpiece 20a upward, and the incompletely stored workpiece 20a is discharged from between the wiper 14 and the first blade 15 and dropped.

  By the way, when the size of the workpiece 20 such as a chip part is minimized, the incompletely stored workpiece 20a sticks to the surface of the turntable 3 or the recess 4a portion of the workpiece storage hole 4 due to factors such as static electricity, resulting in incomplete storage. It is also conceivable that the workpiece 20a does not fall into the workpiece supply unit 9. In this case, as shown in FIG. 4 (b), the incompletely stored workpiece 20a scatters above the first blade 15, but the incompletely stored workpiece 20a is then guarded by the second blade 12 and thus incompletely. The scattering of the storage work 20a is suppressed, and the incomplete storage work 20a can be reliably returned to the work supply unit 9.

Further, since the numerous tooth portions 14 a of the wiper 14 are arranged to be inclined with respect to the tangential direction of the arrangement circle 4 b of the work storage hole 4, each tooth portion 14 a is formed on the surface of the turntable 3 and the work storage hole 4. The dents 4a are alternately contacted. While each tooth portion 14a alternately contacts the surface of the turntable 3 and the recess 4a of the work storage hole 4, vibration is generated in each tooth portion 14a. Therefore, even if incomplete accommodating workpiece 20a is sandwiched between the teeth 14a, it is possible to immediately drop the incomplete storage workpiece 20a which caught between the teeth portion 14a by the vibration of the teeth 14a.

  The wiper 14, the first blade 15 and the second blade 12 are all made of a material having wear resistance, flexibility and low friction, for example, fluorine rubber.

As described above, according to the embodiment, the wiper 14 has the wiper main body 14b and a large number of tooth portions 14a made of an elastic material, and the rigidity of the tooth portions 14a is wider than that of the bristles of the brush. Since the thickness direction is high, the incompletely stored workpiece 20a that cannot be completely stored in the workpiece storage hole 4 can be surely scraped out by the tooth portion 14a. At this time, since the tooth portion is lower in rigidity than a single wiper, there is almost no damage to the incompletely stored workpiece 20a, and wear on the wiper 14 side is extremely small.

The partial front view which shows one Embodiment of the workpiece conveyance apparatus by this invention. The principal part expanded sectional view of the workpiece conveyance apparatus shown in FIG. The figure which shows a wiper. The fragmentary sectional view for demonstrating the effect | action of the workpiece conveyance apparatus by this invention. The figure which shows the conventional workpiece conveyance apparatus. The figure which shows the conventional workpiece conveyance apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Work conveying apparatus 2 Base | substrate 3 Turntable 4 Work accommodation hole 4a Depression 4b Arrangement | circulation circle 5 Suction groove 6 Cover ring 7 Guide 8 Distribution shooter 9 Work supply part 10 Sensor block 11 Guard sheet block 12 Second blade 13 Wiper block 14 Wiper 14a Tooth part 14b Wiper body 15 First blade 16 Upper plate 17 Sensor 17a Light receiving part 17b Light projecting part 20 Work 20a Incompletely stored work

Claims (3)

In a workpiece transfer device that transfers workpieces,
A vertically arranged base,
A turntable that is rotatably provided on the base and has a plurality of workpiece storage holes arranged circumferentially on the peripheral edge;
Provided turntable, and a work supply section for supplying a work to the work receiving hole of the turntable,
A workpiece supply section downstream of the turntable provided above the workpiece supply section, and returns the workpiece to the workpiece supply section by dropping the exclusion of workpieces housed in an incomplete state workpiece storage hole With wiper ,
A blade mechanism that is provided on the downstream side of the wiper of the turntable and above the wiper, receives the workpiece removed by the wiper, and returns the workpiece to the workpiece supply unit by dropping the workpiece;
The wiper has a wiper body, and a plurality of tooth portions made of an elastic material provided on the turntable side of the wiper body. Blade mechanism workpiece transfer device according to claim 1, characterized by comprising a plurality of blades.   2. The workpiece transfer device according to claim 1, wherein the plurality of tooth portions of the wiper extend linearly in a direction inclined with respect to a tangential direction of the arrangement circle of the workpiece storage holes.

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