Gantry type conveying device and processing line

Abstract

This gantry type conveying device is provided with: a beam which is horizontally installed; a runner traveling along the beam; an elevator supported to be movable in the vertical direction with respect to the runner; and a loading part which is supported by the lower portion of the elevator and on which a workpiece is loaded. This processing line has the gantry type conveying device and a machine tool. The machine tool is provided with: a base; and a workpiece supporting device provided movable with respect to the base in a forward and backward direction perpendicular to the extending direction of the beam when viewed in a plane.

1 . A gantry type conveying device, comprising:
 a beam horizontally arranged;   a runner that runs along the beam;   an elevator that is supported movably in upper-lower direction relatively to the runner; and   a placing section that includes an upper horizontal surface at a top thereof and is supported at a lower portion of the elevator to place a lower surface of a conveyance object on the upper horizontal surface without clamping the conveyance object toward the placing section during conveying, the beam being disposed above the placing section.   
     
     
         2 . The gantry type conveying device according to  claim 1 ,
 wherein the placing section is supported at the lower portion of the elevator rotatably around a vertical axis, and   wherein the placing section has a plate shape and spaces for placing a plurality of the conveyance objects on both sides opposite in a horizontal direction across the vertical axis.   
     
     
         3 . The gantry type conveying device according to  claim 2 , wherein the plate shape has a single continuous plate shape. 
     
     
         4 . The gantry type conveying device according to  claim 1 ,
 wherein the placing section is provided with a positioner that positions the conveyance objects on the placing section.   
     
     
         5 . The gantry type conveying device according to  claim 2 ,
 wherein the placing section is provided with a positioner that positions the conveyance objects on the placing section.   
     
     
         6 . The gantry type conveying device according to  claim 1 , further comprising:
 a shifting device comprising a rotary servo motor, a jig, and a work support device that shifts the conveyance object in a direction perpendicular to an extension direction of the beam in a plan view to deliver the conveyance object between itself and the placing section, wherein the shifting device comprises a holding section holds the conveyance object to receive the conveyance object from the placing section.   
     
     
         7 . A processing line, comprising:
 the gantry type conveying device according to  claim 1  and   a machine tool that performs processing of a work,   wherein the conveyance object includes the work,   and wherein the machine tool is provided with a base, and a work support device that is arranged movably in a direction perpendicular to an extension direction of the beam in a plan view and supports the work.   
     
     
         8 . The processing line according to  claim 7 ,
 wherein the work support device includes a carriage movable in the direction perpendicular to the extension direction of the beam in the plan view, and a holder that is installed to the carriage and holds the work, and wherein the holder is installed to the carriage rotatably around an axis that is parallel to the beam.   
     
     
         9 . The gantry type conveying device according to  claim 2 , further comprising: a shifting device comprising a rotary servo motor, a jig, and a work support device that delivers the conveyance object between itself and the placing section, and moves the conveyance object in a direction perpendicular to an extension direction of the beam in a plan view. 
     
     
         10 . The gantry type conveying device according to  claim 4 , further comprising: a shifting device comprising a rotary servo motor, a jig, and a work support device that delivers the conveyance object between itself and the placing section, and moves the conveyance object in a direction perpendicular to an extension direction of the beam in a plan view. 
     
     
         11 . The gantry type conveying device according to  claim 5 , further comprising: a shifting device comprising a rotary servo motor, a jig, and a work support device that delivers the conveyance object between itself and the placing section, and moves the conveyance object in a direction perpendicular to an extension direction of the beam in a plan view. 
     
     
         12 . The gantry type conveying device according to  claim 9 ,
 wherein the work support device includes a carriage movable in the direction perpendicular to the extension direction of the beam in the plan view, and a holder that is installed to the carriage and holds the work, and   wherein the holder is installed to the carriage rotatably around an axis that is parallel to the beam.   
     
     
         13 . The gantry type conveying device according to  claim 10 ,
 wherein the work support device includes a carriage movable in the direction perpendicular to the extension direction of the beam in the plan view, and a holder that is installed to the carriage and holds the work, and   wherein the holder is installed to the carriage rotatably around an axis that is parallel to the beam.   
     
     
         14 . The gantry type conveying device according to  claim 11 ,
 wherein the work support device includes a carriage movable in the direction perpendicular to the extension direction of the beam in the plan view, and a holder that is installed to the carriage and holds the work, and   wherein the holder is installed to the carriage rotatably around an axis that is parallel to the beam.   
     
     
         15 . The gantry type conveying device according to  claim 1 ,
 wherein a whole of the conveyance object and the beam are on a same side of the placing section vertically.   
     
     
         16 . The gantry type conveying device according to  claim 1 ,
 wherein the upper horizontal surface is larger than a dimension of the conveyance object entirely in a horizontal direction so that the conveyance object is placed on any place inside the upper horizontal surface.   
     
     
         17 . The gantry type conveying device according to  claim 1 ,
 wherein the beam supports the runner continuously at any position along the beam.   
     
     
         18 . The gantry type conveying device according to  claim 1 , wherein the placing section comprises a mounting table which places a whole of the conveyance object on an inside of the upper horizontal surface of the mount table during conveying. 
     
     
         19 . The gantry type conveying device according to  claim 1 , wherein the placing section has an open space above the placing section and the conveyance 
     
     
         20 . The gantry type conveying device according to  claim 1 , further comprising a rotation shaft,
 wherein the placing section is supported at the lower portion of the elevator rotatably around a vertical axis through a rotation shaft on the vertical axis, and   wherein the placing section is connected to a lower end of the rotation shaft at the upper horizontal surface.   
     
     
         21 . The gantry type conveying device according to  claim 20 , wherein the placing section has a plate shape having a rectangular and a diameter of the rotation shaft is smaller than a short side of the rectangular. 
     
     
         22 . The gantry type conveying device according to  claim 1 , wherein the conveyance object is a work to be processed.