WO2014106870A1

WO2014106870A1 - Holding and conveying device for small work

Info

Publication number: WO2014106870A1
Application number: PCT/JP2013/000002
Authority: WO
Inventors: 徹荒井; 冬彦塩田
Original assignee: リンク・パワー株式会社
Priority date: 2013-01-04
Filing date: 2013-01-04
Publication date: 2014-07-10

Abstract

The purpose of the present invention is to provide a low-cost device for holding and conveying a small work, such as an extremely small sized camera lens, for which a peripheral space necessary for the air-tight contact of a vacuum suction chuck cannot be obtained. A work stopper (4) and a guide (3) are provided at the tip of a holding and conveying device (1). A work is held by being pressed against the stopper (4) by means of a fluid flow that flows from a back face of the work toward the holding device side and is generated by fluid emission from an opening (5) or fluid suction into the opening (5).

Description

Holding and conveying device for small work

The present invention relates to a holding device that holds an ultra-small workpiece to be held such as a lens by a pressing force of a fluid flow.

Conventionally, an apparatus for holding a workpiece of this type has held a pad by hermetic contact with an edge portion of a non-utilized portion of a workpiece to be held by a vacuum suction force.
There is also a suction holding method using a non-contact holding and conveying device that does not require airtight contact.
(See Patent Document 1)

Patent No. 4437415

However, as the work size is further reduced, it has become extremely difficult to secure the space at the edge necessary for the airtight contact with the pad. In the case of a non-contact holding device, the work surface area necessary for generating a suction force cannot be obtained sufficiently as the work is downsized, and an extremely fine process is required for manufacturing the holding device. And it becomes impractical in terms of cost.

Therefore, an object of the present invention is to provide an inexpensive holding device that stably holds a small-sized workpiece with a slight contact area close to non-contact.

The holding device of the present invention includes a guide for maintaining the outer peripheral position of a workpiece provided with a slit for securing a flow path at the end of a fluid pipe having an opening at the end, and a guide inside A stopper for pressing and holding the workpiece is provided.

In this configuration, when the fluid is ejected from the opening of the fluid pipe through the stopper and the slit of the guide, the work is pressed against the stopper by the hydrodynamic effect of the back surface fluid flow that is sucked and generated from the work side toward the fluid pipe. The work is held by this.

In order to prevent the jet flow from the opening from blowing to other workpieces around the workpiece to be held, it is preferable to provide a flat or shaded isolation shell at the tip of the guide.

Instead of the method of ejecting fluid from the opening, it is also possible to generate a work back flow by sucking the surrounding fluid from the opening and hold the work by pressing the work against a stopper.

In this case, in order to prevent the suction of the fluid that does not contribute to the generation of the back flow as much as possible, it is preferable to provide an isolation shell that contacts the back of the guide slit communicating from the opening and extends to the workpiece side.

It is a figure which represents typically the cross section of FIG. It is a perspective view of a holding device. It is a figure which shows the operation | movement by adding a workpiece | work and an isolation shell to FIG. 1, and fluid ejection. It is a figure which shows the operation | movement by adding a workpiece | work and a suction prevention cover to FIG. 1, and fluid suction.

Hereinafter, the holding device according to the present invention will be described with reference to the accompanying drawings. The holding device 1 holds a micro aspheric lens or the like of a portable video camera by pressing the workpiece 7 against the stopper 4 of the holding device by the hydrodynamic effect of the back surface fluid flow 8 from the workpiece back to the holding device side. It can be used for conveyance.

As shown in FIG. 1, the holding device 1 includes a guide 3 and a workpiece for maintaining the outer peripheral position of a workpiece provided with an opening 5 provided on the circumference in the vicinity of the tip of the fluid pipe whose tip is closed and a slit 6 communicating with the opening 5. It comprises a stopper 4 provided inside the guide 3 for pressing and fixing.

The fluid pipe opening 5, the stopper 4 communicating with the fluid pipe opening 5, and the slit 6 of the guide 3 are provided at rotationally symmetric positions with respect to the axis of the fluid pipe 2.

The stopper 4 has a dimension / shape that contacts at least three points according to the dimension / shape of the target workpiece 7.

When the fluid is ejected from the fluid pipe opening 5, an isolation shell 11 is provided at the tip of the guide as shown in FIG. 3 to prevent the ejected fluid 9 from directly spraying around the workpiece.

In this configuration, as shown in FIG. 3, the ejected fluid 9 mainly flows rearward from the horizontal plane from the opening 5 and is sucked by this flow, whereby the rear side of the target workpiece (opposite side of the holding device) is behind the holding device. A back surface fluid flow 8 is generated, and the work 7 is held by pressing the work 7 against the stopper 4 by the hydrodynamic effect.

When suctioning directly from the fluid pipe opening 5, as shown in FIG. 4, a suction prevention cover 12 that is in contact with the rear side of the rear end of the slit 6 of the guide 3 is provided, and the surrounding fluid that does not contribute to the generation of the back flow 8 of the workpiece 7. It is configured to reduce as much as possible.

In this configuration, as shown in FIG. 4, the work 7 is held by sucking the fluid near and around the work 7 from the opening 5 of the holding device 1 to generate a work back flow and pressing the work 7 against the stopper 4. To do.

DESCRIPTION OF SYMBOLS 1 Holding device 2 Fluid pipe 3 Guide 4 Stopper 5 Opening 6 Slit 7 Work piece 8 Back surface fluid flow 9 Jetting fluid flow 10 Suction fluid flow 11 Isolation shell 12 Suction prevention cover

Claims

A guide for maintaining the outer peripheral position of the workpiece to be held near the end of the fluid pipe body having an opening on the periphery of the end and closing the tip, and on the inner side of the guide for pressing and holding the workpiece to be held at three or more points A holding device comprising: a stopper provided; and a slit cut in a position that communicates with the opening and secures a fluid flow path to the stopper and the guide.
The holding device according to claim 1, wherein the fluid pipe opening is a fluid ejection port.
3. The holding device according to claim 2, further comprising an isolation shell for preventing the ejected fluid from directly spraying around the workpiece to be held near the tip of the guide.
The holding device according to claim 1, wherein the fluid pipe opening is used as a suction port for ambient fluid.
A suction prevention cover is provided to prevent the unnecessary fluid from being sucked from the surroundings by extending to the workpiece side in contact with the outer surface of the guide or the fluid pipe behind the slit communicating with the fluid ejection port of the guide. The holding device according to claim 4.