WO2014125686A1 - 浮上搬送装置、搬送レール、および浮上搬送方法 - Google Patents
浮上搬送装置、搬送レール、および浮上搬送方法 Download PDFInfo
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- WO2014125686A1 WO2014125686A1 PCT/JP2013/080377 JP2013080377W WO2014125686A1 WO 2014125686 A1 WO2014125686 A1 WO 2014125686A1 JP 2013080377 W JP2013080377 W JP 2013080377W WO 2014125686 A1 WO2014125686 A1 WO 2014125686A1
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- transport
- conveyance
- rail
- rails
- gap
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G49/00—Conveying systems characterised by their application for specified purposes not otherwise provided for
- B65G49/05—Conveying systems characterised by their application for specified purposes not otherwise provided for for fragile or damageable materials or articles
- B65G49/06—Conveying systems characterised by their application for specified purposes not otherwise provided for for fragile or damageable materials or articles for fragile sheets, e.g. glass
- B65G49/063—Transporting devices for sheet glass
- B65G49/066—Transporting devices for sheet glass being suspended; Suspending devices, e.g. clamps, supporting tongs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G51/00—Conveying articles through pipes or tubes by fluid flow or pressure; Conveying articles over a flat surface, e.g. the base of a trough, by jets located in the surface
- B65G51/02—Directly conveying the articles, e.g. slips, sheets, stockings, containers or workpieces, by flowing gases
- B65G51/03—Directly conveying the articles, e.g. slips, sheets, stockings, containers or workpieces, by flowing gases over a flat surface or in troughs
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/677—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for conveying, e.g. between different workstations
- H01L21/67784—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for conveying, e.g. between different workstations using air tracks
Definitions
- the present invention relates to a levitation transport technique in which a fluid film is formed between a transport surface and a transport target object, and the transport target object is transported in the transport direction while being lifted from the transport surface.
- the present invention relates to a technique for further stabilizing the floating state of a conveyance object passing through a gap formed between conveyance surfaces of conveyance rails arranged in a row.
- Patent Document 1 Japanese Patent Application Laid-Open Publication No. 2004-126826 discloses a levitation conveyance device that forms an air film between a conveyance object such as a glass substrate used for a flat display panel (FDP) and a conveyance surface, and conveys the conveyance object while floating from the conveyance surface. 1 is known.
- a conveyance object such as a glass substrate used for a flat display panel (FDP) and a conveyance surface
- a levitation conveyance line is constructed by adding a conveyance rail along the conveyance direction of the conveyance object in order to extend the conveyance distance of the conveyance object.
- discontinuous portions (steps, gaps) on the transport surface are formed between the transport rails adjacent in the transport direction (so-called joints between the transport rails), and the end of the transport object being transported (the end on the transport direction side) Part) may come into contact with the end of the following transport rail.
- large glass substrates used for flat display panels such as liquid crystal display panels and plasma display panels are very thin and easily bent, so that during transport, the ends are adjacent in the transport direction of the transport object. There is a high possibility that it hangs down in the gap between the rails and comes into contact with the end of the subsequent transport rail.
- a slot is formed in the front end surface (end surface on the transport direction side) of each transport rail so that the transport target can smoothly get over such a discontinuous portion of the transport surface.
- the plate is fixed.
- the slot plate is formed with ejection slots that compress the air supplied from the air supply path of the transport rail and inject the air toward the transport target along the width direction of the transport target.
- the object to be conveyed reaches the discontinuous part of the conveying surface, it is lifted by receiving buoyancy caused by the blowing of compressed air from the slot of the slot plate. You can transfer to the rail smoothly.
- Patent Document 1 when the compressed air is blown from the ejection slot of the slot plate to the end of the object to be conveyed, the object to be conveyed vibrates up and down due to the influence of the vortex generated above the object to be conveyed.
- the ejection slots of the slot plate in an oblique direction with respect to the end face (end face on the transport direction side) of the transport object. Specifically, by interposing a triangular prism block formed with an air supply path for guiding air from the air supply path of the transfer rail to the ejection slot between the front end surface of the transfer rail and the slot plate, The slot plate is inclined with respect to the end surface of the object.
- the ejection slot of the slot plate is arranged in an oblique direction with respect to the end surface of the object to be transported that passes through the discontinuous portion of the transport surface, thereby suppressing the sudden generation of vortex airflow above the object to be transported.
- the vertical vibration of the object to be conveyed is prevented.
- the slot plate ejection slots are arranged obliquely with respect to the front end surface of the transport object, so Although vibration is prevented, it is difficult to suppress fluctuations in the flying height due to the blowing of compressed air from the ejection slot of the slot plate. Further, the distance from the slot plate mounting surface of the triangular prism-shaped block to the other end surface of the subsequent transport rail becomes longer as it approaches the other side surface from one side surface of the transport rail.
- the present invention has been made in view of the above circumstances, and an object thereof is a floating state of a conveyance object passing through a gap formed between conveyance surfaces of conveyance rails arranged at intervals in the conveyance direction. It is an object of the present invention to provide a levitating and conveying apparatus that can stabilize the above.
- the end surface of the object to be transported other than the end surface along the transport direction passes over a gap formed between two transport surfaces adjacent in the transport direction.
- the two conveyance surfaces before passing over one of the two conveyance surfaces located on the upstream side, the two conveyance surfaces enter the other conveyance surface located on the downstream side.
- the present invention A levitation transport device that forms a fluid film between a transport surface along a transport direction and a transport target, and transports the transport target in the transport direction while levitating from the transport surface, A plurality of transport rails that eject the fluid for forming the fluid film between the transport surface and the transport target;
- the plurality of transport rails are arranged along the transport direction such that the transport surfaces of the plurality of transport rails are aligned along the transport direction,
- the two conveyance surfaces adjacent in the conveyance direction each have an edge portion connecting two positions where the positions in the conveyance direction are different from each other.
- edges of the two transport surfaces are opposed to each other, and a gap intersecting the orthogonal direction of the transport direction is formed between the two transport surfaces, and the transport direction of the two facing edges is the same.
- the edge of the one conveyance surface located on the downstream side of the other is located on the upstream side in the conveyance direction of the two positions connected by the edge, and the other edge located on the upstream side in the conveyance direction.
- the position is positioned on the upstream side in the transport direction with respect to the downstream position in the transport direction.
- a fluid film is formed between each of a plurality of transport surfaces arranged in the transport direction and a transport target by a fluid ejected from each of the transport surfaces, and the transport target Is a levitating conveyance method for conveying in the conveying direction while levitating from each of the plurality of conveying surfaces,
- end faces other than the end faces along the transport direction are relatively inclined with respect to the direction of a gap formed between two transport surfaces adjacent in the transport direction. While passing over the gap, before passing over one of the two conveyance surfaces on the upstream side, it enters the other conveyance surface located on the downstream side.
- the front end portion or the rear end portion of the conveyance target object being conveyed is eliminated over the entire region in the width direction so as to protrude onto the gap formed between adjacent conveyance surfaces in the conveyance direction.
- the front end portion and the rear end portion of the conveyance object passing through the gap formed between the conveyance surfaces adjacent in the conveyance direction are always at least of the two conveyance surfaces at any position in the width direction. Partly supported by an air film formed between the two. For this reason, the floating state of the conveyance object passing through the gap formed between the conveyance surfaces of the conveyance rails arranged at intervals in the conveyance direction can be further stabilized.
- FIG. 1 is an external view showing a schematic configuration of a transport table 100 of a levitation transport apparatus according to an embodiment of the present invention.
- 2A, 2 ⁇ / b> B, and 2 ⁇ / b> C are a left side view, a front view, and a right side view of the transport rail 1.
- FIG. 3A shows the space between the transport surfaces 110A and 110B of two transport rails 1A and 1B adjacent in the transport direction among the plurality of transport rails 1 arranged at a predetermined interval S2 along the transport direction.
- FIG. 3B and FIG. 3C are diagrams schematically showing the state of the front end portion 31 of the conveyance object 3 passing over the gap 4. .
- FIGS. 6A and 6B are diagrams for explaining an example of the shape of the conveyance surface of the conveyance rails 1D and 1E constituting the conveyance table 100 and an example of the shape of the conveyance object 3.
- the levitation transfer apparatus forms an air film between a plurality of transfer surfaces 110 and a transfer object (glass substrate or the like) 3 constituting a transfer path, and the transfer object 3 is transferred to each transfer surface.
- a transport stand 100 or the like that transports in the transport direction along the transport path while floating from 110 is provided.
- FIG. 1 partially shows a schematic configuration of the transport table 100.
- FIG. 1 defines an orthogonal coordinate system XYZ having an X axis along the transport direction, a Z axis along the vertical direction, and a Y axis perpendicular to these two axes XZ. In other drawings, this orthogonal coordinate system XYZ is used as appropriate.
- the transport table 100 includes a plurality of transport rails 1 arranged in a line with a predetermined interval 4 along the X axis, and a rail support mechanism 2 that supports these transport rails 1 and the like. Have.
- Each conveyance rail 1 is a plate-like component that ejects compressed air supplied from an air supply pump from one surface (conveyance surface) 110 via an internal air supply path (not shown).
- the conveyance rail 1 includes a back metal in which an air supply path is formed on one surface, and a porous sintered layer formed on one surface (air supply path forming surface) of the back metal.
- the compressed air supplied to the air supply path located on the back side of the porous sintered layer is discharged from the surface of the porous sintered layer functioning as the conveying surface 110 through the pores inside the porous sintered layer.
- the plurality of transport rails 1 are arranged in a row with a predetermined interval 4 along the X axis with the transport surface 110 facing upward at a predetermined height (predetermined position in the Z-axis direction). Are listed.
- the rail support mechanism 2 is attached to each of a plurality of prismatic base frames 21 arranged along the Y axis with a predetermined interval S1 in the X axis direction, and at least one for each base frame 21, A leveling device (not shown) that supports the conveyance rail 1 on the base frame 21 so that the height (position in the Z-axis direction) can be adjusted is provided.
- Each transport rail 1 is stretched over at least two base frames 21 in the X-axis direction with the transport surface 110 facing upward, and is supported at a plurality of positions by leveling devices attached to these base frames 21. ing.
- the rail support mechanism 2 configured by the prismatic base frame 21 and the leveling device is shown as an example. However, the rail support mechanism 2 stably supports the plurality of transport rails 1. If possible, it is not always necessary to have such a structure.
- FIG. 3A is an enlarged view of a gap 4 portion formed between the conveyance surfaces 110 of the two conveyance rails 1 arranged at a predetermined interval S2 in the X-axis direction.
- each of the transport rails 1 is a plate-shaped component having an appropriate plate thickness (thickness in the Z-axis direction) t in which one surface 110 functions as the transport surface 110 described above. It is.
- the transport surface 110 of the transport rail 1 has a substantially parallelogram shape, and among the four surfaces 120 to 123 in the thickness direction T adjacent to the transport surface 110, a pair of surfaces 120 and 122 facing each other are: The other pair of surfaces 121 and 123 arranged along the X axis are adjacent to each other in the X axis direction with a predetermined angle ⁇ (0 ° ⁇ ⁇ 90 °) inclined with respect to the X axis. Directed to one side.
- the edges (the edge 112 connecting the two adjacent corners 116 and 119, and the edge 114 connecting the two adjacent corners 117 and 118) are arranged along the X axis, and have a predetermined length with respect to the X axis.
- Another set of edges formed between the surfaces 121 and 123 inclined at an angle ⁇ (0 ° ⁇ ⁇ 90 °) and the conveying surface 110 edges connecting two adjacent corners 116 and 117) 113, an edge portion 115 connecting two adjacent corner portions 118 and 119
- has a predetermined angle ⁇ with respect to the X axis the smaller corner portions 116 and 118 of the corner portions on both sides of the edge portions 113 and 115).
- the surfaces 120 and 122 arranged along the X-axis are referred to as side surfaces 120 and 122, and one of the surfaces 121 and 123 directed toward the adjacent transport rail 1 in the X-axis direction is directed in the transport direction.
- the surface 121 is referred to as a front end surface 121, and the other surface 123 oriented in the direction opposite to the conveyance direction is referred to as a rear end surface 123.
- positioned at the start point and end point of a conveyance path does not necessarily need to have the parallelogram-shaped conveyance surface 110, and the conveyance rail 1 arrange
- the front end surface 121 directed toward the next conveyance rail 1 on the conveyance path only needs to be inclined at a predetermined angle ⁇ (0 ° ⁇ ⁇ 90 °) with respect to the X axis, and is arranged at the end point of the conveyance path. If the rear end surface 122 directed toward the previous transport rail 1 on the transport path is inclined at a predetermined angle ⁇ (0 ° ⁇ ⁇ 90 °) with respect to the X axis, Good.
- each transport rail 1 When such transport rails 1 are arranged in a line along the X axis with the transport surface 110 facing upward, the front end surface 121 of each transport rail 1 is adjacent to the transport rail 1 in the X axis direction.
- the rear end surface 123 of the matching transport rail 1 is disposed substantially parallel to each other with a predetermined interval S2 in the X-axis direction. For this reason, between the two conveyance surfaces 110 adjacent on the conveyance path in the X axis direction, the gaps 4 in the direction oblique to the X axis are formed by the edges 113 and 115 inclined at a predetermined angle ⁇ with respect to the X axis. Is formed.
- the direction width S2 is determined so as to satisfy b> S2 ⁇ tan ⁇ .
- one of the transport surfaces 110B positioned on the downstream side in the transport direction corresponds to the angle ⁇ .
- the corner 118 on the end surface 123 side is positioned on the upstream side in the transport direction with respect to the corner 116 on the front end surface 121 side corresponding to the angle ⁇ of the other transport surface 110A located on the upstream side in the transport direction.
- 3B and 3C among the plurality of transport rails 1 arranged at a predetermined interval S2 along the X axis, transport of two transport rails 1A and 1B adjacent in the X axis direction.
- the state of the front-end part 31 of the conveyance target object 3 which passes on the clearance gap 4 formed between surface 110A, 110B is shown typically.
- 3B and 3C in order to distinguish between the two conveyance rails 1 adjacent to each other in the X-axis direction and their conveyance surfaces 110, the upstream side in the conveyance direction (the front side in the conveyance direction).
- the reference numerals 1A and 110A are attached to the transport rail 1 and its transport surface 110 installed on the transport rail 1), and the transport rail 1 and its transport surface 110 installed on the downstream side in the transport direction (rearward in the transport direction) are denoted by reference numerals. 1B and 110B are attached.
- the front end surface 31A of the transport target object 3 is still positioned on the transport surface 110A of the transport rail 1A, and therefore the front end portion 31 of the transport target object 3 and the transport target object 3 are transported.
- An air film is formed between the rail 1A and the conveyance surface 110A by compressed air ejected from the conveyance surface 110A. For this reason, even if the front end portion 31 of the conveyance object 3 enters the clearance 4 between the conveyance surfaces 110 and 110B of the two conveyance rails 1A and 1B, air is generated in the region on the other side surface 120 side of the conveyance rail 1A. Continue to receive partial pressure from the membrane.
- the front end surface 31A of the conveyance target 3 is the front end of the conveyance surface 110A of the conveyance rail 1A on the other side surface 120 side of the conveyance rail 1A.
- the surface side corner portion 116, on the side surface 122 side of the next transport rail 1B it passes over the rear end surface side corner portion 118 of the transport surface 110B of the next transport rail 1B, and the next transport rail 1B. It enters on the conveyance surface 110B of the rail 1B.
- an air film is formed between the front end portion 31 of the conveyance object 3 and the conveyance surface 110B of the next conveyance rail 1B by compressed air ejected from the conveyance surface 110B.
- the front end portion 31 receives the pressure of the air film in both regions on the other side surface 120 side of the transport rail 1A and one side surface 122 side of the next transport rail 1B, that is, regions on both sides in the Y-axis direction.
- the front end surface 31A of the conveyance target 3 passes on the front end surface corner portion 116 of the conveyance surface 110A of the conveyance rail 1A on the other side surface 120 side of the conveyance rail 1A
- the front end surface 31A of the conveyance object 3 is already positioned on the conveyance surface 110B of the next conveyance rail 1B, and the conveyance surface 110B and the conveyance object of the next conveyance rail 1B.
- An air film is formed between the three front end portions 31 and the compressed air ejected from the conveying surface 110B.
- the rear end portion 32 (the belt-like region in the Y direction including the other end surface 32A directed in the opposite direction of the transport direction, see FIG. 1) of the transport target 3 being transported is also adjacent to the two in the X-axis direction. While passing over the gap 4 formed between the transport surfaces 110A and 110B, it is always formed between at least one of the two transport surfaces 110A and 110B at any position in the Y-axis direction. Partially supported by an air film. 4A and 4B, among the plurality of transport rails 1 arranged at a predetermined interval S2 along the X axis, transport of two transport rails 1A and 1B adjacent in the X axis direction is performed.
- the state of the rear-end part 32 of the conveyance target 3 which passes on the clearance gap 4 formed between surface 110A, 110B is shown typically.
- 4A and 4B in order to distinguish between two transport rails 1 adjacent to each other in the transport direction and their transport surfaces 110, the transport rail 1 installed on the upstream side in the transport direction and Reference numerals 1A and 110A are attached to the transport surface 110, and reference numerals 1B and 110B are attached to the transport rail 1 installed on the downstream side in the transport direction and the transport surface 110 thereof.
- An air film is formed between the conveyance surface 110A of the conveyance rail 1A and the compressed air ejected from the conveyance surface 110A. For this reason, even if the rear end portion 32 of the conveyance target 3 enters the gap 4 between the conveyance surfaces 110 and 110B of the two conveyance rails 1A and 1B, it is a region on the other side surface 120 side of the conveyance rail 1A. It continues to receive partial pressure from the air film.
- the rear end surface 32A of the conveyance object 3 is on the other side surface 120 side of the conveyance rail 1A, and the front end of the conveyance surface 110A of the conveyance rail 1A.
- the surface side corner portion 116, on the side surface 122 side of the next transport rail 1B it passes over the rear end surface side corner portion 118 of the transport surface 110B of the next transport rail 1B, and the next transport rail 1B. It enters on the conveyance surface 110B of the rail 1B.
- an air film is formed between the rear end portion 32 of the conveyance object 3 and the conveyance surface 110B of the next conveyance rail 1B by compressed air ejected from the conveyance surface 110B.
- the rear end portion 32 receives the pressure of the air film in both regions on the other side surface 120 side of the transport rail 1A and one side surface 122 side of the next transport rail 1B, that is, regions on both sides in the Y-axis direction.
- the rear end surface 32A of the conveyance object 3 passes on the front end surface corner portion 116 of the conveyance surface 110A of the conveyance rail 1A on the other side surface 120 side of the conveyance rail 1A, On one side 122 side of the rail 1B, the rear end surface 32A of the conveyance object 3 is already positioned on the conveyance surface 110B of the next conveyance rail 1B, and the conveyance surface 110B and the conveyance object of the next conveyance rail 1B. 3 is formed with an air film formed by compressed air ejected from the conveying surface 110B.
- the rear end portion 32A of the conveyance object 3 is the rear end surface 32A of the conveyance object 3.
- the pressure of the air film is partially received in the region on the one side surface 122 side of the next transport rail 1B.
- the plurality of transport rails 1 arranged at intervals along the transport direction are respectively between the transport surfaces 110 of the transport rails 1 adjacent in the transport direction.
- One of the transport surfaces 110B that is positioned protrudes toward the downstream of the transport direction that the other transport surface 110A that is positioned on the upstream side of the transport direction has the tip of the corner 118 that protrudes upstream of the transport direction. It is positioned on the upstream side in the transport direction from the tip of the corner portion 116.
- the front end surface 31A and the rear end surface 32A of the conveyance target 3 span between the two conveyance surfaces 110A and 110B adjacent in the conveyance direction over the entire area in the width a direction (Y-axis direction, see FIG. 1).
- the front end portion 31 and the rear end portion 32 of the conveyance object 3 are always transferred over the gap 4 between the two conveyance surfaces 110A and 110B. It is located on at least one of the surfaces 110A and 110B and partially receives the pressure of the air film from the compressed air from at least one of the surfaces.
- the front end portion 31 and the rear end portion 32 of the transport target object 3 between the two transport rails 1A and 1B adjacent in the transport direction are prevented from dropping, the front end portion 31 and the rear end portion of the transport target object 3 are prevented. 32 can smoothly transfer from the transport rail 1A to the next transport rail 1B. For this reason, since it is not necessary to raise the front end part 31 and the rear end part 32 of the conveyance target object 3 high by the blowing up of the compressed air from the ejection slot of the slot plate, between the two conveyance surfaces 110A and 110B adjacent in the conveyance direction. It is possible to further suppress fluctuations in the flying height of the conveyance target 3 when passing over the gap 4. Further, since it is not necessary to attach a slot plate, the manufacturing cost is reduced accordingly.
- the gap 4 between the two transport surfaces 110A and 110B adjacent in the transport direction does not partially expand.
- the front end portion 31 and the rear end portion 32 of the conveyance object 3 can pass smoothly while floating above the gap 4 at any position in the width a direction (Y-axis direction).
- each transport rail 1 has a parallelogram-shaped transport surface 110
- a plurality of transport rails 1C having a trapezoidal transport surface 110C as shown in FIG. 5A are spaced between two transport surfaces 110C adjacent in the transport direction along a direction oblique to the transport direction. 4 may be arranged in a line along the transport direction while changing the direction alternately.
- the edge 113 of the upstream conveyance surface 110F1 of the conveyance surfaces 110F1 and 110F2 of the two conveyance rails 1F adjacent in the conveyance direction is formed stepwise.
- An edge 115 of the downstream conveyance surface 110F2 is formed in a reverse shape of the edge 113 of the upstream conveyance surface 110F1, and a stepped gap 4 is formed between them in the width direction (Y (Axial direction) may be formed so as to intersect, or as shown in FIG. 5 (C), the upstream side of the transport surfaces 110G1 and 110G2 of the two transport rails 1G adjacent in the transport direction.
- the edge portion 113 of the surface 110G1 is formed in a curved shape, and the edge portion 115 of the downstream side conveyance surface 110G2 is formed in an inverted shape of the edge portion 113 of the upstream side conveyance surface 110G1, and curved between them.
- During 4 may be formed so as to intersect with the width direction of the conveying object 3 (Y-axis direction). Also in these cases, one corner 118F, 118G of the rear end face side corners of one of the two conveyance surfaces 110F2, 110G2 located on the downstream side in the conveyance direction among the two conveyance surfaces adjacent in the conveyance direction. Is positioned upstream in the transport direction with respect to one corner 116F, 116G of the front end surface side corners of the other transport surfaces 110F1, 110G1 positioned on the upstream side in the transport direction.
- the corners 116 and 118 located at the edge ends of the two transport surfaces 110A and 110B adjacent in the transport direction protrude toward the other transport surfaces 110B and 110A.
- the edges 113 and 115 of the two transport surfaces adjacent in the transport direction are protruded toward the other transport surface at either position in the Y direction, respectively. It is formed so as to pass through two places with different positions, and the protruding portion of the edge 113 of the one conveyance surface located on the downstream side in the conveyance direction is set to the edge 115 of the other conveyance surface located on the upstream side in the conveyance direction. What is necessary is just to make it position in the upstream of a conveyance direction rather than a protrusion part.
- Edges 115 of surfaces 110H2 and 110J2 protrude upstream in the transport direction at positions other than both sides, and edge 113 of transport surfaces 110H1 and 110J1 located upstream in the transport direction has its inverted shape. It may be.
- the protrusions 115H and 115J of the edge 115 of the conveyance surfaces 110H2 and 110J2 located on the downstream side in the conveyance direction are replaced with the protrusion 113H of the edge 113 of the conveyance surfaces 110H1 and 110J1 located on the upstream side in the conveyance direction. , 113J and positioned upstream in the transport direction.
- the edge 113 of the transport surfaces 110H1 and 110J1 located on the upstream side in the transport direction protrudes to the upstream side in the transport direction at positions other than both sides.
- the edge 115 of the transport surfaces 110H2 and 110J2 located on the downstream side in the direction may have the inverted shape.
- a plurality of transport rails 1 are arranged in a line along the X axis.
- the transport rails 1 may be arranged in a line along the X axis, and a plurality of such transport rail arrays may be arranged in the Y axis direction.
- a plurality of transport rails are formed such that the slant gap 4 between the transport surfaces 110 in each transport rail row is connected to the slant gap 4 between the transport surfaces 110 in the adjacent transport rail row. 1 may be arranged in the Y-axis direction and the Y-axis direction.
- the inclination angle ⁇ of the rear end surface 123 and the X-direction width S2 of the gap between the two conveyance surfaces 110 adjacent in the X-axis direction so as to satisfy B> S2 ⁇ tan ⁇ .
- the conveyance rails of the first conveyance rail row One side surface 122 of the transport rail 1 next to the N-th transport rail row before passing on the corner 116 on the front end surface 121 side of the transport surface 110 of the transport rail 1 on the other side surface 120 side of the first rail. On the side Further, it may pass over the corner 118 on the rear end face 123 side of the next conveyance rail 110.
- a porous diaphragm is shown as an example of the diaphragm type in the transport rail 1, but the diaphragm system in the transport rail 1 is not limited to the porous diaphragm.
- a diaphragm-type conveyance rail other than a porous diaphragm such as an orifice diaphragm, a surface diaphragm, or a self-comprising diaphragm, may be used as the conveyance rail 1.
- the transport target object before the front end surface 31 ⁇ / b> A and the rear end surface 32 ⁇ / b> A of the transport target object 3 passes over the corner 116 on the front end surface 121 side of the transport rail 1 ⁇ / b> A. It is preferable that an ejection hole is formed in a region on the transport surface 110B of the next transport rail 1B through which the three front end portions 31 and the rear end portion 32 enter.
- a plurality of air intake holes that draw the object 3 to be conveyed by intake air may be formed on the conveyance surface 110 of the conveyance rail 1 in a predetermined arrangement.
- the clearance gap 4 of the diagonal direction with respect to the conveyance direction is formed between two conveyance surfaces 110A and 110B adjacent in the conveyance direction, two adjacent in the conveyance direction.
- the direction of the gap 4 formed between the conveyance surfaces is relatively inclined with respect to the front end surface 31A and the rear end surface 32A of the conveyance object 3, and the entire front end surface 31A of the conveyance object 3 is located above the gap 4. Further, it is only necessary that the entire rear end face 32A is not protruded.
- Each may be inclined with respect to the transport direction.
- the shape of the conveyance surfaces 110D1 and 110D2 of the conveyance rail 1D used as the conveyance rail 1 constituting the conveyance table 100 and the shape of the conveyance object 3A are such that the front end surface 31A and the rear end surface 32A of the conveyance object 3A are adjacent to each other.
- the two transport surfaces 110D1 and 110D2 are determined to enter the downstream transport surface 110D2 before completely passing over the upstream transport surface 110D1.
- the shape of the conveyance surfaces 110D1 and 110D2 of the conveyance rail 1D and the shape of the conveyance object 3A satisfy such a relationship, and the end surfaces in the X axis direction that face each other, and end surfaces (front end surfaces, A substantially parallelogram having a rear end face).
- one corner 33A protruding toward the downstream in the conveyance direction is the other corner.
- the part 33B has already entered the downstream transport surface 110D2 when it is still positioned on the upstream transport surface 110D1, and is passing through the gap 4 between the two adjacent transport surfaces 110D1 and 110D2.
- one corner portion 33C protruding toward the upstream side in the conveyance direction has an upstream conveyance surface when the other corner portion 33D enters the downstream conveyance surface 110D2. Still located on 110D1.
- the front end portion 31 or the rear end portion 32 of the conveyance target 3A being conveyed always passes either one of the gaps 4 formed between the two conveyance surfaces 110D1 and 110D2 adjacent in the conveyance direction. In position, it is partially supported by an air film formed between at least one of the two transport surfaces 110D1, 110D2.
- the shape of the conveyance object 3A is such that the front end surface 31A and the rear end surface 32A are conveyed downstream before completely passing over the upstream conveyance surface 110E1 of the two adjacent conveyance surfaces 110E1 and 110E2. It is determined to enter on the surface 110E2. For this reason, in the front end portion 31 of the conveyance object 3 passing through the gap 4 between the two adjacent conveyance surfaces 110E1 and 110E2, one corner 33A protruding toward the downstream in the conveyance direction is the other corner.
- the part 33B has already entered the downstream transport surface 110E2 when it is still positioned on the upstream transport surface 110E1, and is passing through the gap 4 between the two adjacent transport surfaces 110E1 and 110E2.
- one corner portion 33C protruding toward the upstream in the conveyance direction is conveyed upstream when the other corner portion 33D enters the downstream conveyance surface 110E2. It is still located on the surface 110E1. For this reason, the front end portion 31 or the rear end portion 32 of the conveyance target 3A being conveyed always passes either one of the gaps 4 formed between the two conveyance surfaces 110E1 and 110E2 adjacent in the conveyance direction. In position, it is partially supported by an air film formed between at least one of the two transport surfaces 110E1, 110E22. In FIG.
- the substantially parallelogram-shaped conveyance object 3 is illustrated, but the shape of the conveyance object 3 is such that the opposite end surface in the Y-axis direction and the end surface inclined with respect to the conveyance direction (A substantially trapezoidal shape having a front end face and a rear end face) may be used.
- the method of restricting the transport rails 1D and 1E is not limited, and the transport object 3A is sucked onto the transport surfaces 110D1, 110D2, 110E1, and 110E2 of the transport rails 1D and 1E by intake air.
- a plurality of intake holes to be drawn may be formed in a predetermined arrangement.
- the front end portion 31 of the conveyance target 3 passes over the gap 4 between two adjacent conveyance surfaces, the other corner portion 33B is still positioned on the upstream conveyance surfaces 110D1 and 110E1.
- an ejection hole is formed in a region on the downstream conveyance surfaces 110D2 and 110E2 into which one corner 33A has already entered.
- a plurality of transport rails 1D and 1E may be arranged in a line along the X axis, and such a transport rail array may be arranged in a plurality of lines in the Y axis direction.
- the present invention is a floating conveyance apparatus that conveys the conveyance objects 3 and 3A in both directions.
- the present invention can also be applied.
- a levitation transport device that forms a fluid film between a transport surface and a transport target and transports the transport target in the transport direction while floating from the transport surface
- transport rails arranged at intervals in the transport direction The present invention can be applied to the purpose of further stabilizing the floating state of the conveyance object passing through the gap formed between the conveyance surfaces.
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Abstract
Description
搬送方向に沿った搬送面と搬送対象物との間に流体膜を形成して、前記搬送対象物を、前記搬送面から浮上させながら前記搬送方向に搬送する浮上搬送装置であって、
前記搬送面を有し、前記搬送対象物との間に前記流体膜を形成するための流体を噴出する搬送レールを複数備え、
前記複数の搬送レールは、当該複数の搬送レール各々の前記搬送面が前記搬送方向に沿って並ぶように、前記搬送方向に沿って並べられ、
前記搬送方向において隣り合う2つの前記搬送面は、それぞれ、前記搬送方向の位置が異なる2箇所の位置を結ぶ縁部を有し、
前記2つの搬送面の縁部は、対向して、前記搬送方向の直交方向と交差する隙間を当該2つの前記搬送面の間に形成し、当該対向する2つの縁部のうち、前記搬送方向の下流側に位置する一方の前記搬送面の縁部は、当該縁部が結ぶ前記2箇所の位置のうち、前記搬送方向の上流側の位置を、前記搬送方向の上流側に位置する他方の前記搬送面の前記縁部が結ぶ前記2箇所の位置のうちの、前記搬送方向の下流側の位置よりも、前記搬送方向の上流側に位置付ける。
前記搬送対象物が有する端面のうち、前記搬送方向に沿った端面以外の端面は、前記搬送方向において隣り合う2つの搬送面間に形成される隙間の方向に対して相対的に傾斜しており、当該隙間上を通過している間、当該2つの搬送面のうち、上流側に位置する一方の搬送面上を越える前に、下流側に位置する他方の搬送面上に進入するものである。
Claims (7)
- 搬送方向に沿った搬送面と搬送対象物との間に流体膜を形成して、前記搬送対象物を、前記搬送面から浮上させながら前記搬送方向に搬送する浮上搬送装置であって、
前記搬送面を有し、前記搬送対象物との間に前記流体膜を形成するための流体を噴出する搬送レールを複数備え、
前記複数の搬送レールは、当該複数の搬送レール各々の前記搬送面が前記搬送方向に沿って並ぶように、前記搬送方向に沿って並べられ、
前記搬送方向において隣り合う2つの前記搬送面は、それぞれ、前記搬送方向の位置が異なる2箇所の位置を結ぶ縁部を有し、
前記2つの搬送面の縁部は、対向して、前記搬送方向の直交方向と交差する隙間を当該2つの前記搬送面の間に形成し、当該対向する2つの縁部のうち、前記搬送方向の下流側に位置する一方の前記搬送面の縁部は、当該縁部が結ぶ前記2箇所の位置のうち、前記搬送方向の上流側の位置を、前記搬送方向の上流側に位置する他方の前記搬送面の前記縁部が結ぶ前記2箇所の位置のうちの、前記搬送方向の下流側の位置よりも、前記搬送方向の上流側に位置付ける
ことを特徴とする浮上搬送装置。 - 請求項1記載の浮上搬送装置であって、
前記対向する2つの縁部は、前記搬送方向に対して傾斜した方向に沿って前記隙間を形成するように前記搬送方向に対して傾斜し、
前記搬送方向において隣り合う2つの前記搬送面は、前記縁部の両側に2つの角部を有し、当該2つの前記搬送面のうち、前記搬送方向の下流側に位置する一方の前記搬送面は、当該搬送面の前記2つの角部のうち、前記搬送方向の上流側に位置する角部を、前記搬送方向の上流側に位置する他方の前記搬送面の前記2つの角部のうちの、前記搬送方向の下流側に位置する角部よりも、前記搬送方向の上流側に位置付ける
ことを特徴とする浮上搬送装置。 - 請求項1または2記載の浮上搬送装置であって、
前記複数の搬送レールの搬送面は、略平行四辺形または略台形の形状を有する
ことを特徴とする浮上搬送装置。 - 請求項1記載の浮上搬送装置であって、
前記対向する2つの縁部は、曲線状または階段状であることを特徴とする浮上搬送装置。 - 請求項1ないし4のいずれか一項に記載の浮上搬送装置において、前記搬送レールとして用いられる搬送レール。
- 搬送方向に沿って並べられた複数の搬送面のそれぞれと搬送対象物との間に、前記それぞれの搬送面から噴出する流体により流体膜を形成して、前記搬送対象物を、前記複数の搬送面のそれぞれから浮上させながら前記搬送方向に搬送する浮上搬送方法であって、
前記搬送対象物が有する端面のうち、前記搬送方向に沿った端面以外の端面は、前記搬送方向において隣り合う2つの搬送面間に形成される隙間の方向に対して相対的に傾斜しており、当該隙間上を通過している間、当該2つの搬送面のうち、上流側に位置する一方の搬送面上を越える前に、下流側に位置する他方の搬送面上に進入する
ことを特徴とする浮上搬送方法。 - 請求項6記載の浮上搬送方法であって、
前記搬送対象物は、前記搬送方向に沿った端面以外の端面として、搬送方向に対して傾斜した端面を有する略平行四辺形または略台形の形状を有する、
ことを特徴とする浮上搬送方法。
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KR1020157024369A KR20150118989A (ko) | 2013-02-14 | 2013-11-11 | 부상 반송장치, 반송레일, 및 부상 반송방법 |
CN201380072879.4A CN104995113A (zh) | 2013-02-14 | 2013-11-11 | 浮动传送装置、传送轨道和浮动传送方法 |
IL239806A IL239806A0 (en) | 2013-02-14 | 2015-07-06 | Float transfer device, transfer rail and float transfer method |
HK16101774.2A HK1213863A1 (zh) | 2013-02-14 | 2016-02-18 | 浮動傳送裝置、傳送軌道和浮動傳送方法 |
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JP2013027000A JP6147521B2 (ja) | 2013-02-14 | 2013-02-14 | 浮上搬送装置、搬送レール、および浮上搬送方法 |
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KR (1) | KR20150118989A (ja) |
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- 2013-11-11 WO PCT/JP2013/080377 patent/WO2014125686A1/ja active Application Filing
- 2013-11-11 CN CN201380072879.4A patent/CN104995113A/zh active Pending
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JP2014156297A (ja) | 2014-08-28 |
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