JP2013013992A - Apparatus for holding and conveying small-sized workpiece - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inexpensively provide a device for holding and conveying a small-sized workpiece such as a micro-sized camera lens which cannot obtain a marginal space required for the air-tight contact of a vacuum suction chuck.SOLUTION: The holding and conveying device 1 has a workpiece stopper 4 for pressing and holding a workpiece to the tip of the holding and conveying device and a guide 3 for positioning the workpiece, and also has openings 5 for ejecting or sucking fluid to generate a fluid flow that directs from the back side of the workpiece toward the holding and conveying device side.

Description

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 been held by a vacuum suction force with a pad in airtight contact with an edge portion of an unused portion of a workpiece to be held.
There is also a suction holding method using a non-contact holding and conveying device that does not require airtight contact.

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.

In view of this, an object of the present invention is to provide an inexpensive holding device that stably holds a work of a small size 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 having 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 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 from the back by the back fluid flow from the work side that is sucked into the generated flow toward the fluid pipe origin. Is retained.

In order to prevent the jet flow from the opening from blowing onto 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 the 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 the 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 include an isolation shell that is in contact with the rear of the guide slit communicating with the opening and extends toward the workpiece.

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 a fluid suction, adding a workpiece | work and a suction prevention cover to FIG.

The holding device according to the present invention will be described below with reference to the accompanying drawings. The holding device 1 is used for holding and transporting an ultra-small aspherical lens or the like of a portable video camera by pressing the work 7 against the stopper 4 of the holding device from the back by a back surface fluid flow 8 from the back of the work toward the holding device. be able to.

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. The stopper 4 is 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 size / shape that contacts at least three points according to the size / shape of the target work 7.

When the fluid is ejected from the fluid pipe opening 5, as shown in FIG. 3, an isolation shell 11 is provided at the guide tip 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 from the back surface.

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, a work back flow is generated by sucking the fluid near and around the work 7 from the opening 5 of the holding device 1 and pressing the work 7 against the stopper 4 from the back. Hold.

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

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

  Conventionally, an apparatus for holding a workpiece of this type has been held by a vacuum suction force with a pad in airtight contact with an edge portion of an unused portion of a workpiece to be held. There is also a suction holding method using a non-contact holding and conveying device that does not require airtight contact.

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.

  In view of this, an object of the present invention is to provide an inexpensive holding device that stably holds a work of a small size 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 having 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 arrangement, when ejecting the fluid through the stopper and the guide slits from the fluid pipe opening, the work with hydrodynamic effect by the back flow of fluid toward the fluid pipe based direction from the workpiece-side generated is sucked into jet stream stopper The workpiece is held by pressing.

  In order to prevent the jet flow from the opening from blowing onto 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 the 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 the 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 include an isolation shell that is in contact with the rear of the guide slit communicating with the opening and extends toward the workpiece.

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 a fluid suction, adding a workpiece | work and a suction prevention cover to FIG.

The holding device according to the present invention will be described below with reference to the accompanying drawings. This holding device 1 holds a micro aspherical 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 back of the workpiece toward the holding device. 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. The stopper 4 is 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 size / shape that contacts at least three points according to the size / shape of the target work 7.

  When the fluid is ejected from the fluid pipe opening 5, as shown in FIG. 3, an isolation shell 11 is provided at the guide tip 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 due to 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 (5)

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. The holding apparatus according to claim 2, further comprising an isolation shell for preventing the ejected fluid from directly spraying around the work to be held near the tip of the guide. The holding device according to claim 1, wherein the fluid pipe opening is a suction port for ambient fluid. A suction prevention cover for preventing the unnecessary fluid from being sucked from the surroundings by extending toward the workpiece side in contact with the guide or the outer surface of the fluid pipe behind the slit communicating with the fluid ejection port of the guide is provided. The holding device according to claim 4.