JP2009242015A - Carrying device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive carrying device capable of easily gripping and carrying a workpiece of various shapes in an accurate position. <P>SOLUTION: This carrying device 11 is provided with a gripping means 15 having a plurality of clamp claws 5 and 5 for gripping a side surface of a work, a pressing member 2 for pressing down a surface of the work W and a guide pin 3 to be inserted into a recess 8 bored on an upper surface of the work W. Its gripping means 15 positions the work by the guide pin 3, and fixes the work W in a carrying attitude by the pressing member 2, and grips the work W while gripping the side surface of the work W by the clamp claws 5 and 5. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a conveying apparatus that holds and conveys a workpiece.

  As a conventional workpiece transfer device, a loader is provided so as to be movable in the Z-axis direction (left-right direction) along a traveling beam, and a loader arm having gripping means is arranged in the Y-axis direction ( A device that is provided so as to be movable in the vertical direction) and that transports the workpiece gripped by the gripping means to different positions along the Z-axis direction is known (Patent Document 1). In such a transport apparatus, it is often necessary to accurately position the workpiece at the transport destination. Therefore, some conveying apparatuses are provided with a posture regulating frame capable of positioning the workpiece at a correct position in a predetermined posture at the workpiece conveyance destination.

JP 2000-246579 A

  However, since the posture regulation frame has a complicated structure, if the posture restriction frame is installed at the workpiece transfer destination, the cost is increased. In addition, the conveyance device provided with the posture regulation frame has a problem that the workpiece to be conveyed tends to be limited to a cylindrical shape.

  An object of the present invention is to solve the problems of the above-described conventional transfer device, and to easily hold and transfer workpieces of various shapes at accurate positions, and an inexpensive transfer device Is to provide.

  Among the present inventions, the invention according to claim 1 is a conveying apparatus having a gripping means for gripping the outer periphery of the workpiece and a transporting means for transporting the workpiece gripped by the gripping means. The gripping means includes a plurality of clamp claws for gripping a side surface of the workpiece, a pressing member for pressing the surface of the workpiece, and a hole formed in the upper surface of the workpiece. And a guide pin for insertion.

  The invention according to claim 2 is characterized in that, in the invention according to claim 1, the pressing member is provided so as to protrude in a direction perpendicular to the moving direction of the clamp claw inside the clamp claw. To do.

  The invention according to claim 3 is characterized in that, in the invention according to claim 1 or claim 2, the guide pin has a shape with a sharpened tip.

  In the conveying apparatus according to claim 1, the gripping means includes a clamp claw, a guide pin, and a pressing member, the workpiece is positioned by the guide pin, and the workpiece is fixed in the conveying posture by the pressing member, and the clamp Since the workpiece is gripped in a state where the side surface of the workpiece is gripped by the claws, the workpieces of various shapes can be gripped and conveyed in an accurate posture.

  In the conveying device of the second aspect, the pressing member can protrude in a direction orthogonal to the moving direction of the clamp pawl, and the workpiece can be securely fixed in the conveying posture. It is very unlikely that the product will be damaged or transported.

  In the conveying device according to the third aspect, since the guide pin has a shape with a sharpened tip, the guide pin can be positioned very accurately when the workpiece is gripped.

  FIG. 1 shows an outline of a transport device according to the present invention. In the transport device 11, a loader 12 is moved in the Z-axis direction (left-right direction) along a traveling beam 14 by a driving device (not shown). The loader arm 13 is provided so as to be movable with respect to the loader 12 in the Y-axis direction (vertical direction) by a driving device (not shown). A gripping means 15 for positioning and gripping a workpiece (hereinafter referred to as a work) is provided at the tip of the loader arm 13.

  2 to 4 show the gripping means 15, and the gripping means 15 is composed of a chuck 4, clamp claws 5, 5,..., An air cylinder 1, a pressing member 2, and the like. The chuck 4 is formed in a shape obtained by vertically cutting the front and back of a flat cylindrical body, and a horizontal plane is formed at the lower end. An air cylinder 1 is installed on the back surface of the chuck 4, and a pressing member 2 is fixed to a piston of the air cylinder 1 via a connecting arm 9. And the pressing member 2 is in a state located substantially below the center of the horizontal surface of the chuck 4 and is moved in the Y-axis direction by the operation of the air cylinder 1.

  The pressing member 2 is formed in a flat cylindrical shape, and the lower end surface is formed flat. And the guide pin 3 is being fixed to the approximate center of the flat lower end surface so that it may protrude below. The guide pin 3 is formed in an inverted conical shape, and the base end portion has a cylindrical shape.

  On the other hand, a pair of clamp claws 5 and 5 are provided on the left and right sides of the chuck 4 so as to be positioned outside the pressing member 2. Each of the clamp claws 5 and 5 is provided with a gripping body on the inner side of the lower end of the support body formed in an inverted L shape, and along the groove formed in the chuck by the operation of an air cylinder (not shown). It is designed to be relatively close or far apart.

  In the state where the workpiece is gripped by the gripping means 15, the transport device 11 moves the workpiece in the Y-axis direction and moves it along the traveling beam 14 in the Z-axis direction, and is transported to the main shaft (not shown). The work can be centered. FIG. 5 shows an example of a work gripped by the gripping means 15, and the work W is formed in a substantially quadrangular shape in which most of the outer periphery is configured by a curve, A cylindrical recess 8 is formed.

  Hereinafter, the operation in which the gripping means 15 grips the workpiece W will be described with reference to FIG. When the transport device 11 transports the workpiece W, the workpiece W is placed on the pallet 16 on the mounting table 10 positioned vertically below the gripping means 15. Then, the loader arm 13 descends with respect to the workpiece W placed in such a manner to cause the gripping means 15 to approach, and when the distance between the gripping means 15 and the workpiece W reaches a predetermined distance, the loader arm 13 descends (state shown in FIG. 6A).

  Further, the pressing member 2 is lowered by the operation of the air cylinder 1, and the lowering of the pressing member 2 is stopped when the lower end surface of the pressing member 2 comes into contact with the surface of the workpiece W as shown in FIG. At that time, since the pointed tip of the guide pin of the pressing member 2 gradually enters the inside of the recess 8 of the workpiece W, even if the position of the workpiece W is shifted from the gripping means 15, the position is Corrected to the correct position.

  As described above, after the lowering of the pressing member 2 is finished, the clamp claws 5 and 5 positioned on the left and right of the workpiece W are relatively approximated by the operation of an air cylinder (not shown), as shown in FIG. The left and right sides of the workpiece W are gripped. When the workpiece W is gripped in such a manner, the loader arm 13 to which the gripping means 15 is attached rises, and the loader 12 integrated with the loader arm 13 moves in the Z direction along the traveling beam 14, thereby gripping means. The workpiece W gripped by 15 is transported and centered with respect to the spindle.

  As described above, the conveying device 11 includes a plurality of clamping claws 5 and 5 for holding the side surface of the workpiece, a pressing member 2 for pressing the surface of the workpiece W, and an upper surface of the workpiece W. A guide pin 3 for insertion into the drilled recess 8, the workpiece is positioned by the guide pin 3, the workpiece W is fixed in the conveying posture by the pressing member 2, and the clamp claws 5, 5 Since the workpiece W is gripped in a state where the side surface of the workpiece W is gripped, workpieces of various shapes can be gripped and conveyed in an accurate posture.

  In addition, the conveying device 11 is provided so that the pressing member 2 can protrude in the direction (Y-axis direction) perpendicular to the moving direction of the clamp claws 5 and 5 inside the clamp claws 5 and 5. Since the workpiece can be securely fixed in the conveying posture, it is extremely difficult to cause the workpiece W to be gripped or conveyed.

  In addition, since the guide pin 3 has a shape with a sharpened tip, the transport device 11 can be positioned very accurately when the workpiece W is gripped.

  In addition, the structure of the conveying apparatus of the present invention is not limited to the aspect of the above embodiment, and conveying means, gripping means (air cylinder, pressing member, guide pin, chuck, clamp claw, connecting arm, etc.), etc. The configuration of the shape, structure, and the like can be changed as appropriate without departing from the spirit of the present invention.

  For example, the gripping means is not limited to the one in which the clamp claw is opened and closed by the operation of the air cylinder or the pressing member is moved up and down as in the above embodiment, and the clamping claw and the pressing member are moved by the operation of the hydraulic pressure or the motor. It is also possible to change to something. Further, the pressing member is not limited to a member to which the guide pin is fixed as in the above-described embodiment, but may be a member in which the guide pin is provided so as to be able to appear and retract by an urging means such as a coil spring. In addition, the gripping means is not limited to the gripping means that grips the workpiece by moving closer to each other while sliding, but other gripping methods such as gripping the workpiece by moving the clamping claws closer to each other. It is also possible to change to the one that grips the workpiece by the mechanism. In addition, the gripping means is not limited to one that grips the workpiece with two clamp claws as in the above-described embodiment, and can be changed to one having three or more clamp claws.

It is explanatory drawing which shows the outline of a conveying apparatus. It is explanatory drawing which shows the state which looked at the holding means from the front. It is explanatory drawing which shows the state which looked at the holding means from the right side. It is explanatory drawing which shows the state which looked at the holding means from the bottom face. It is explanatory drawing which shows an example of the workpiece | work hold | gripped by the holding means. It is explanatory drawing which shows the mode of the holding | grip operation | work of the workpiece | work by a holding means.

Explanation of symbols

2 .... Pressing member 3 .... Guide pin 5 .... Clamp claw 8 .... Depression 11 .... Conveying device 12 .... Loader 13 .... Loader arm 14 .... Running beam 15 .... Grip means

Claims (3)

A conveying device having a gripping means for gripping the outer periphery of the workpiece and a transporting means for transporting the workpiece gripped by the gripping means,
The gripping means is inserted into a plurality of clamp claws for gripping the side surface of the workpiece, a pressing member for pressing the surface of the workpiece, and a hole drilled in the upper surface of the workpiece. And a guide pin.   The transport device according to claim 1, wherein the pressing member is provided so as to protrude in a direction orthogonal to a moving direction of the clamp claw inside the clamp claw.   The conveying device according to claim 1, wherein the guide pin has a shape with a sharpened tip.

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