JPH07110704B2 - Ring-shaped work transfer method and transfer chuck - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for transferring a ring-shaped work, for example, a ring-shaped work for transferring a base material for a ring varistor, and a transfer chuck thereof.

In recent years, electronic components have become smaller and smaller, and it has become difficult to perform manual work. In particular, the ring varistor has an outer diameter of 10 mm to 15 mm, an inner diameter of 8 mm, and a thickness of 0.8 mm to 1.5 mm, and the base material before firing is easily broken.

[Conventional technology]

FIG. 5 is an explanatory view of a pallet in the conventional example, FIG. 6 is an explanatory view of a stacked state in the conventional example, and FIG. 7 is an explanatory view of an aligned state in the conventional example.

In the figure, the pallet 11 has a ring-shaped work storage 12
Is provided. As shown in FIG. 5, the pallet 11 is provided with two ring-shaped work accommodating portions 12 at two places, but a large number of them are usually provided.

First, the ring-shaped work 1 is stored in the ring-shaped work storage portion 12 of the pallet 11 using an alignment jig (not shown). Pallet containing the ring-shaped work 1
11 is the next step, for example, in the case of ring varistor,
It is conveyed to the electrode coating step. Then, the ring-shaped work 1 is taken out from the pallet 11 for the next processing.

However, there is conventionally no suitable means for taking out the ring-shaped work 1 from the pallet 11, and the ring-shaped work 1 once accommodated in the pallet 11 is vacant as shown in FIG. Then, the ring-shaped work 1 was re-laminated and aligned again as shown in FIG. 7 by using an unillustrated alignment jig used for the disc-shaped work.

[Problems to be Solved by the Invention]

However, when the ring-shaped works 1 are emptied from the pallet 11, the ring-shaped works 1 collide with each other and are damaged or cracked. In particular, when the ring-shaped work 1 was placed at an angle, a part of the outer diameter of the ring-shaped work 1 entered the inner diameter portion of the ring-shaped work 1 and became entangled with each other, increasing the occurrence of the damage or crack.

In addition, the ring-shaped works 1 have to be re-arranged again after they have been emptied from the pallet 11 once.

According to the present invention, in order to solve the above problems, it is possible to take out a stacked ring-shaped work from a pallet accommodating the stacked work by a transfer chuck and transfer the stacked ring-shaped work to the next step. An object is to provide a method for transferring a ring-shaped work.

Another object of the present invention is to provide a transfer chuck that does not cause damage or cracks during transfer of a ring-shaped work.

In order to achieve the above object, a method for transferring a ring-shaped work according to the present invention is a method of transferring a plurality of ring-shaped works stacked and arranged on a pallet without removing the transfer work by a transfer chuck. The lower ends of the ring-shaped workpieces are successively stacked in a ring-shaped workpiece storage section having a small-diameter recess that is smaller than the outer diameter and larger than the inner diameter of the ring-shaped workpieces, and after the pallet is conveyed,
Insert the expansion protrusion tip of the transfer chuck connected to the transfer arm into the small-diameter recess of the ring-shaped work storage part, expand the expansion protrusion tip, and then place the transfer arm at a desired position in the expanded state. And contracting the inflated protruding tip portion, and then withdrawing the transfer chuck together with the inflated protruding tip portion from the stacked ring-shaped workpieces.

Further, the transfer chuck of the present invention is connected to a pipe-shaped work guide that can be inserted into the inner diameter portion of a plurality of sequentially stacked ring-shaped works, and the lower end of the pipe-shaped work guide.
In order to prevent the ring-shaped work from expanding and falling from the pipe-shaped work guide, the expansion is made of a rubber bag in which the lower end portion is thickened and the connection portion with the pipe-shaped work guide is thinned, and the connection portion is easily stretched. It is characterized in that it comprises a projecting tip portion and a transfer arm connecting portion provided at an upper end of the pipe-shaped work guide and provided with a hole for supplying air.

[Action]

A plurality of ring-shaped workpieces are sequentially stored in the ring-shaped workpiece storage unit provided with a small-diameter recess that is larger than the inner diameter and smaller than the outer diameter of the ring-shaped workpieces provided in the lower portion of the pallet. After the pallet containing a plurality of ring-shaped workpieces is transported to a desired place, the tip of the expansion protrusion of the transfer chuck connected to the transfer arm is passed through the rings of the stacked ring-shaped workpieces to store the ring-shaped workpieces. Is inserted into the small-diameter recess of the section. The inflated protruding tip transfers the transfer arm to a desired location in an expanded state after being supplied with air and expanded.

When transferring the transfer arm, the lower ends of the stacked ring-shaped workpieces are engaged with the inflating protrusion tips and do not drop.
When removing the expansion projection tip from the stacked ring-shaped works, air is removed from the expansion projection tip.
As a result, the inflating protruding tip portion contracts, so that the transfer chuck can be removed from the ring-shaped work together with the inflating protruding tip portion.

In this way, the plurality of ring-shaped workpieces stacked and aligned in the pallet for transportation are taken out or transported by the transport chuck without being disassembled.

An elastic rubber bag is connected to the tip of the pipe-shaped work guide in the transfer chuck. The rubber bag is inserted into the ring of the stacked ring-shaped works without air inside. The shape of the rubber bag is such that the lower end portion is thick and the connecting portion with the pipe-shaped work guide is thin so that the connecting portion can be easily stretched.

When air is sent to the rubber bag of such a transfer chuck, the rubber bag expands laterally at the connecting portion, and the ring-shaped work is not dropped from the pipe-shaped work guide, and the ring-shaped work is damaged. It is transferred without doing.

〔Example〕

An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an explanatory view of a ring-shaped work alignment state in the present invention, FIG. 2 is an explanatory view of a state in which air is inserted into a transfer chuck in the present invention, and FIG. 3 is a state in which a ring-shaped work in the present invention is lifted by the transfer chuck. Explanatory drawing, 4th
The drawing is an explanatory view of a state in which the transfer chuck according to the present invention is deflated.

In the figure, the ring-shaped work 1 is, for example, a ring
There is no particular limitation as long as it is a ring-shaped component such as a varistor substrate, its finished product, or a ring magnet. The pallet 2 is a carrying case provided with a large number of ring-shaped work storage portions 3 and is made of expanded polystyrene or synthetic resin having higher hardness. Further, when the ring-shaped work is fired, the pallet 2 can be made of a refractory material. The pallet 2 shown in FIGS. 1 to 3 is
One of the ring-shaped work storage units 3 is shown as a representative. The ring-shaped work accommodating portion 3 has a small-diameter recess 4 formed at the lower end thereof, which is larger than the inner diameter of the ring-shaped work 1.

The transfer chuck 5 includes a pipe-shaped work guide 6 and
For example, a rubber bag 7 connected to the lower end of the pipe-shaped work guide 6 and a transfer arm connecting portion 8 connected to the upper end of the pipe-shaped work guide 6. The rubber bag 7 has good elasticity and has a thick lower end portion and a thin portion near the connecting portion with the pipe-shaped work guide 6 to facilitate the extension near the connecting portion. The transfer arm connecting portion 8 is connected to the pipe-shaped work guide 6 and also to a transfer arm (not shown). Further, the transfer arm connecting portion 8 is provided with a hole 9 for supplying or sucking air, and the hole 9 is connected to an air supply and suction mechanism (not shown).

The ring-shaped works 1 are sequentially dropped from the aligning jig (not shown) into the ring-shaped work storage unit 3 and stored in a stacked state. When the ring-shaped work 1 is stored in the ring-shaped work storage portion 3, when the pallet 2 is vibrated in the horizontal direction in a linear or arc shape, the pallets 2 are aligned and stacked as shown in FIG. Ring-shaped work 1 is pallet 2
When it is full, the pallet 2 is transported to the next step, for example, in the case of a ring varistor, to the electrode coating step. The transfer chuck 5 is inserted into the ring portion of the stacked ring-shaped works 1 in a state where air is not sent to the rubber bag 7 connected to the tip portion thereof, that is, the rubber bag 7 is not inflated and projected. After that, when air is supplied through the hole 9 of the transfer arm connecting portion 8, the thin portion of the rubber bag 7 is inflated and protruded, as shown in FIG. In this state, as shown in FIG. 3, when the transfer chuck 5 is lifted, the stacked ring-shaped works 1 can be transferred by the inflating protruding tip 10 of the rubber bag 7 without falling off from the pipe-shaped work guide 6. After that, the stacked ring-shaped works 1 control the transfer arm (not shown) of the transfer chuck 5 so that the stacked ring-shaped works 1 are placed at a desired place. When the stacked ring-shaped works 1 are placed at a desired location, air is sucked and the inflating protruding tip 10 of the rubber bag 7 contracts as shown in FIG. Therefore, the transfer chuck 5 can be removed from the stacked ring-shaped works 1.

As described above, the ring-shaped works 1 are conveyed to the vicinity of a desired place while being stacked on the pallet 2, and are taken out from the pallet 2 while being stacked and transferred to the desired place.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments. Various design changes can be made without departing from the present invention described in the claims.

For example, the inflating protruding tip may be formed of a well-known elastic elastic member other than rubber, or the inflating protruding tip may have a corner other than a circular shape as in the embodiment. In addition, it is possible to configure the expansion / projection tip portion to be a mechanical expansion / contraction mechanism and to expand / project the expansion / contraction mechanism with air, a spring, or the like, or to use a member having a mechanism that bends only in one direction. Is.

〔The invention's effect〕

According to the present invention, a plurality of stacked ring-shaped workpieces are accommodated in a pallet having a small-diameter recess at the lower end portion that is larger than the inner diameter of the ring-shaped workpiece and smaller than the outer diameter, and the inflating protruding tip portion of the transfer chuck is accommodated. After inserting into the inner diameter portion of the ring-shaped work, by expanding the expansion protruding tip, a plurality of ring-shaped works can be transferred to a desired place without being loose in the stacked state and without damaging the ring-shaped works. be able to.

According to the present invention, since the elastic rubber bag connected to the inflating protruding tip portion, having a thicker lower end portion, and having a thinner connecting portion is attached, the ring-shaped work is not damaged and is kept in the laminated state. It can be easily transferred.

[Brief description of drawings]

FIG. 1 is an explanatory view of a ring-shaped work alignment state in the present invention, FIG. 2 is an explanatory view of a state in which air is inserted into a transfer chuck in the present invention, and FIG. 3 is a state in which a ring-shaped work in the present invention is lifted by the transfer chuck. Explanatory drawing, FIG. 4 is an explanatory view of a state in which the transfer chuck according to the present invention is deflated,
FIG. 5 is an explanatory view of a pallet in the conventional example, FIG. 6 is an explanatory view of a stacked state in the conventional example, and FIG. 7 is an explanatory view of an aligned state in the conventional example. 1 …… Ring work 2 …… Pallet 3 …… Ring work storage 4 …… Small diameter recess 5 …… Transfer chuck 6 …… Pipe work guide 7 …… Rubber bag 8 …… Transfer arm connection 9 …… Hole 10 ... Expanded protruding tip

Claims (2)

[Claims] 1. A ring-shaped work 1 in which a plurality of ring-shaped works 1 stacked and aligned on a pallet 2 are taken out or transferred by a transfer chuck 5 without being scattered.
In the transfer method described above, the ring-shaped workpieces 1 are sequentially stored in a stacked state in a ring-shaped workpiece storage portion 3 having a small-diameter recess 4 that is larger than the inner diameter of the ring-shaped workpiece 1 and smaller than the outer diameter at the lower end of the pallet 2. After the pallet 2 is conveyed, the inflating protruding tip portion 10 of the transfer chuck 5 connected to the transferring arm is inserted into the small-diameter concave portion 4 of the ring-shaped work storage portion 3 to inflate the inflating protruding tip portion 10, After transferring the transfer arm to a desired place in the expanded state and contracting the inflating protruding tip 10, the transfer chuck 5 together with the inflating protruding tip 10 is extracted from the stacked ring-shaped work 1. Characteristic ring-shaped work transfer method. 2. A pipe-shaped work guide 6 that can be inserted into the inner diameter portion of a plurality of sequentially stacked ring-shaped works 1, and a pipe-shaped work guide 6 that is connected to the lower end of the pipe-shaped work guide 6 and expands to form the pipe. In order to prevent the pipe-shaped work guide 6 from falling off, the lower end portion is thickened and the connection portion with the pipe-shaped work guide 6 is thinned, and the inflated protruding tip portion 10 made of a rubber bag that makes the connection portion easily extendable, A transfer chuck including a transfer arm connecting portion 8 provided at an upper end of the pipe-shaped work guide 6 and provided with a hole 9 for supplying air.