JP2003039369A - Workpiece holding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive and compact workpiece holding device having a simple configuration and capable of preventing erroneous chucking. SOLUTION: A leg part placed substantially horizontally of a workpiece arranged in a loading part such as a carrier is attracted by a magnet to constitute a unit for guiding a side face of a base part and a part of a base bottom face in a case. Consequently, floating which is a measure against inadequacy at a chuck position is not required, and the unit can be inexpensively constituted in a compact manner to hold and position a plurality of workpieces.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for holding a workpiece such as an electronic component.

[0002]

2. Description of the Related Art Conventionally, as a holding device for a work piece of a small article such as an electronic component, a mechanical chuck or a suction device using a vacuum is known.

5 and 6 show the structure of a conventional workpiece holding device.

FIG. 5 shows a base portion 101 of a workpiece 100.
Chuck claw 102 for chucking the
02 is composed of a chuck 103 for opening and closing, and as another example, FIG.
And a vacuum exhaust unit 111 that creates a vacuum source and a solenoid valve 112 that controls the vacuum exhaust unit 111.

[0005]

In this device for holding a workpiece, a plurality of workpieces 100 set on the mounting portion are brought into contact with the upper surface of the base 101 (the surface opposite to the legs) without contacting the workpiece 100. It is required to hold them at the same time and position the base 101.

In the conventional mechanical chuck system, a small base 10 is used for taking out a plurality of workpieces 100.
Although a smaller portion (a portion excluding non-contact) of 1 will be chucked, it is often mis-chucked by being caught by the positioning guide when it is taken out from the mounting portion such as a carrier which is positioned.

It is also conceivable to float the chuck 103 in order to eliminate the mischuck,
The units that make them up are complicated, large, expensive, and less effective.

On the other hand, the vacuum suction system is compact but does not have a large suction area and has a weak suction force.

[0009]

In order to solve these problems, the invention according to claim 1 provides a workpiece having a plurality of leg portions made of a magnetic material and a base portion provided with the leg portions. In a holding device for a workpiece to be held, a placing portion for placing the workpiece, a holding portion for holding the base portion, and a takeout portion provided with a magnet are provided, and the base portion of the workpiece is provided on the placing portion. And a groove into which the leg portion is inserted, the magnet of the take-out portion is brought into contact with the leg portion, and the holding portion is brought into contact with the base portion, and the work piece is taken out from the placing portion by the take-out portion,
A second holding part, which holds the base part with the holding part, is brought into contact with the base part, and then a device for holding a work piece is provided with means for separating magnetic force from the leg part. It also has the effect of being able to hold and position without a floating mechanism.

According to a second aspect of the present invention, the placing portion is arranged so that the work piece is placed substantially horizontally, and the take-out portion is rotated and taken out so that the work piece becomes substantially vertical. The device for holding a work piece described above has an effect of changing the posture of the work piece.

According to the third aspect of the present invention, the work piece placement detecting means for detecting the presence or absence of the work piece and the placement posture state is provided in the work piece placement portion, so that the work piece is taken out. It has an effect of being able to monitor the presence or absence of the workpiece and the mounting posture state before.

According to the fourth aspect of the present invention, the foreign matter detecting means for detecting foreign matter is provided in the vicinity of the attracting portion of the magnet of the work piece take-out portion. It has the effect of preventing interference.

According to a fifth aspect of the invention, the second object to be processed is
Since the workpiece removal completion detecting means for detecting the presence or absence of the workpiece and the removal completion posture state is provided in the holding part, it is possible to prevent interference with the workpiece in advance before removing the workpiece, It has an effect that the posture of the workpiece can be monitored after the completion of taking out.

According to a sixth aspect of the present invention, since the cycle number input means for setting the cycle number so as to periodically clean the magnet of the take-out portion and the magnet cleaning means for cleaning the magnet are provided, It has an effect of preventing foreign matter from adhering to the workpiece and preventing damage to the workpiece.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION As described above, according to the present invention, the legs of the workpieces, which are arranged on the mounting portion such as the carrier, which are placed substantially horizontally, are attracted by the magnet, and the side surface of the base portion and, in some cases, the base portion. This is a unit that guides a part of the bottom surface.

As a result, it is possible to form a compact and inexpensive unit without the need for floating, which is a countermeasure for the inadequate chuck position, and to hold and position a plurality of workpieces.

Further, by providing the mechanism for rotating the above-mentioned holding and positioning guide unit, the leg portions can be moved from substantially horizontal to substantially vertical, which makes it possible to carry and process to the next process.

(Embodiment 1) Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a side view of a work holding device according to the present invention, and FIG. 2 is a front view showing a function of positioning and picking up a work and a function of rotating the work from substantially horizontal to substantially vertical. It is configured.

The work piece 18 is set on a nonmagnetic material mounting portion called a carrier, and the carrier is conveyed and positioned by a conveyor or the like.

Then, the holding portion 1 for guiding the base portion of the workpiece approaches from above to position the workpiece 18, and the magnet 2 approaches the approaching / releasing unit 3 so that the leg of the workpiece 18 is reached. Abut the part and adsorb.

The base guide holding portion 1 is detached by the base guide approaching / leaving drive unit 4 while the leg portion of the workpiece is adsorbed.

The workpiece is positioned by providing the base guide block 5 corresponding to the guide that has been positioned by the mounting portion and bringing the base guide holding portion 1 into contact therewith.

The positioned workpiece is rotated by the posture changing drive unit 8 from substantially horizontal to substantially vertical.

After the rotation, the magnet approaching / leaving drive unit 3 separates the workpiece, and the workpiece is positioned but released from the attraction. Thereby, the workpiece can be easily taken out to the next step.

In the above description, the mounting portion is made of a non-magnetic material. However, even if the mounting portion is a magnetic material, the mounting portion can be positioned and clamped to separate it from the workpiece. is there.

Although the magnet 2 has been described as an example in which the magnet 2 is made of a permanent magnet, the same can be applied to the case where the magnet 2 and the magnet approaching / leaving drive unit 3 are made of electromagnets.

Further, the same is true for the reverse case of this series of operations.

(Embodiment 2) A second embodiment of the present invention will be described with reference to FIG.

FIG. 3 is a layout view of the workpiece detecting means of the workpiece holding device according to the present embodiment. The presence or absence of the workpiece 18 and the placement of the workpiece 18 in the vicinity of the placing portion 14 of the workpiece 18 are shown. Workpiece placement detection means 15a and 15b for detecting the posture state are provided.

Therefore, it is possible to monitor the presence or absence of the work piece 18 and the mounting posture state before taking out the work piece 18.

Examples of the workpiece placement detecting means 15a and 15b include a photo sensor, a laser sensor, and a proximity sensor.

(Third Embodiment) In the third embodiment of the present invention, foreign matter detecting means 16a and 16b for detecting a foreign matter (not shown) are provided near the magnet 2 shown in FIG. .

Therefore, it is possible to prevent interference between the work piece 18 and the foreign matter before the work piece 18 is taken out in advance.

As an example of the foreign matter detecting means 16a, 16b,
There are photo sensors, laser sensors, and proximity sensors.

(Embodiment 4) A fourth embodiment of the present invention will be described.

In the present embodiment, the workpiece removal completion detecting means 1 for detecting the presence / absence of the workpiece 18 in the second holding part 5 of the workpiece shown in FIG.
7a and 17b are provided.

Therefore, it is possible to prevent interference with the work piece 18 before the work piece 18 is taken out, and it is possible to monitor the posture of the work piece 18 after the work piece 18 is taken out.

(Embodiment 5) A fifth embodiment of the present invention will be described with reference to FIG.

FIG. 4 is a schematic view of the magnet cleaning of the take-out portion. In the present embodiment, the cycle number input means 21 for setting the number of cycles so as to periodically clean the magnet 2 of the take-out part, and the magnet cleaning means 19 by the control signal from the control device 20 according to the cycle number. The magnet 2 is driven to approach and clean the magnet 2.

As a result, it is possible to prevent foreign matter from adhering to the magnet and prevent damage to the workpiece in advance.

An example of the cycle number input means 21 is a preset counter, and an example of the magnet cleaning means 19 is a brush.

[0043]

As described above, according to the present invention, when one or more workpieces are to be taken out, the chuck portion is simple and compact in order to eliminate mischucking. It is possible to realize an inexpensive effect, and it is possible to obtain an effective effect that positioning and holding can be realized without coming into contact with the upper surface of the base of the workpiece on which important elements and the like are mounted. Further, since the interference between the attracted portion of the magnet of the take-out portion and the foreign matter is prevented in advance and the attracted portion of the magnet is periodically cleaned, the workpiece to be carried to the next process and the machining can be performed very stably. be able to.

[Brief description of drawings]

FIG. 1 is a side view showing a device for holding a workpiece according to a first embodiment of the present invention.

FIG. 2 is a front view showing a device for holding a workpiece according to the first embodiment of the present invention.

FIG. 3 is a layout view of workpiece detection means according to second to fourth embodiments of the present invention.

FIG. 4 is a schematic diagram of magnet cleaning of a take-out portion according to a fifth embodiment of the present invention.

FIG. 5 is a diagram showing a conventional device for holding a workpiece by a mechanical chuck method.

FIG. 6 is a view showing a conventional device for holding a workpiece by a vacuum suction method.

[Explanation of symbols]

1 Base guide holder 2 magnets 3 Magnet approaching / leaving drive unit 4 Base guide approaching / leaving drive unit 5 Base guide block 6 Base guide block shift unit 7 Base guide holding unit shift unit 8 Posture change drive unit 9 chuck 10 chuck claws 11 Suction nozzle 12 Solenoid valve 13 Vacuum exhaust unit 14 Placement of work piece 15a, 15b Workpiece placement detection means 16a, 16b Foreign matter detection means 17a, 17b Workpiece removal completion detecting means 18 Workpiece 19 Magnet cleaning means 20 Control device 21 Cycle number input means

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yoshihiko Hatano             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. F-term (reference) 3C007 DS06 FS07 FS08 KS03 KS04                       KV08 KV11 NS17

Claims (6)

[Claims] 1. A workpiece holding device for holding a workpiece, which has a plurality of legs made of a magnetic material and a base portion provided with the legs, and a placing part for placing the workpiece, A holding part for holding the base part and a take-out part provided with a magnet are provided, and a groove for receiving the base part and the leg part of the workpiece is provided in the placing part, and the magnet of the take-out part is brought into contact with the leg part. , The holding part is brought into contact with the base part, and the work piece is taken out from the placing part by the take-out part, and then the second holding part sandwiching the base part with the holding part is brought into contact with the base part, and then the magnetic force is applied. A device for holding a workpiece, which is provided with a means for separating the workpiece from the leg. 2. The holding of the work piece according to claim 1, wherein the placing part is arranged so that the work piece is placed substantially horizontally, and the take-out part is rotated and taken out so that the work piece becomes substantially vertical. apparatus. 3. The workpiece according to claim 1, wherein the workpiece placing portion is provided with a workpiece placement detecting means for detecting the presence or absence of the workpiece and a placement posture state. Object holding device. 4. The holding device for a work piece according to claim 1, further comprising a foreign matter detection means for detecting a foreign matter, which is provided in the vicinity of the magnet in the take-out portion of the work piece. 5. The work piece take-out completion detecting means for detecting the presence or absence of the work piece and the take-out completion posture state is provided in the second holding portion of the work piece. Workpiece holding device. 6. A cycle number input means for setting a cycle number so as to periodically clean an attracting portion of a magnet of a take-out portion, and a magnet cleaning means for cleaning the magnet.
6. The workpiece holding device according to any one of 1 to 5.