WO2012074007A1 - 搬送ロボット - Google Patents
搬送ロボット Download PDFInfo
- Publication number
- WO2012074007A1 WO2012074007A1 PCT/JP2011/077674 JP2011077674W WO2012074007A1 WO 2012074007 A1 WO2012074007 A1 WO 2012074007A1 JP 2011077674 W JP2011077674 W JP 2011077674W WO 2012074007 A1 WO2012074007 A1 WO 2012074007A1
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- WO
- WIPO (PCT)
- Prior art keywords
- axis
- drive means
- link
- link member
- elevating
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J18/00—Arms
- B25J18/02—Arms extensible
- B25J18/04—Arms extensible rotatable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J9/00—Programme-controlled manipulators
- B25J9/06—Programme-controlled manipulators characterised by multi-articulated arms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J9/00—Programme-controlled manipulators
- B25J9/02—Programme-controlled manipulators characterised by movement of the arms, e.g. cartesian coordinate type
- B25J9/04—Programme-controlled manipulators characterised by movement of the arms, e.g. cartesian coordinate type by rotating at least one arm, excluding the head movement itself, e.g. cylindrical coordinate type or polar coordinate type
- B25J9/041—Cylindrical coordinate type
- B25J9/042—Cylindrical coordinate type comprising an articulated arm
- B25J9/044—Cylindrical coordinate type comprising an articulated arm with forearm providing vertical linear movement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J11/00—Manipulators not otherwise provided for
- B25J11/0095—Manipulators transporting wafers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J9/00—Programme-controlled manipulators
- B25J9/02—Programme-controlled manipulators characterised by movement of the arms, e.g. cartesian coordinate type
- B25J9/04—Programme-controlled manipulators characterised by movement of the arms, e.g. cartesian coordinate type by rotating at least one arm, excluding the head movement itself, e.g. cylindrical coordinate type or polar coordinate type
- B25J9/041—Cylindrical coordinate type
- B25J9/042—Cylindrical coordinate type comprising an articulated arm
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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
- B65G49/067—Sheet handling, means, e.g. manipulators, devices for turning or tilting sheet glass
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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
- H01L21/67739—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 into and out of processing chamber
- H01L21/67742—Mechanical parts of transfer devices
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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
- H01L21/67763—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 the wafers being stored in a carrier, involving loading and unloading
- H01L21/67766—Mechanical parts of transfer devices
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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
- B65G2249/00—Aspects relating to conveying systems for the manufacture of fragile sheets
- B65G2249/02—Controlled or contamination-free environments or clean space conditions
Definitions
- the present invention relates to a transport robot for transporting articles, and is particularly suitable for transporting heavy substrates such as large glass substrates for solar panels.
- Various transfer robots are used to load a substrate to be processed into a substrate processing apparatus such as a chemical vapor deposition apparatus (CVD apparatus) and to carry out a processed substrate.
- a substrate processing apparatus such as a chemical vapor deposition apparatus (CVD apparatus)
- CVD apparatus chemical vapor deposition apparatus
- a substrate to be processed there is a square glass substrate used for a solar panel, and the size thereof is over 2 m on a side, and is a large heavy object.
- the transfer robot also has a sufficient movement distance in the height direction for the lifting operation of the substrate holding member for holding the substrate. It is necessary to secure.
- the conventional transfer robot described above has a configuration in which the entire robot arm (horizontal articulated arm) composed of the first link member, the second link member, and the substrate holding member is moved up and down. Therefore, there is a problem that a large driving force is required (Patent Documents 1, 2, and 3).
- a mechanism for moving the raising / lowering driving means of the robot arm in a horizontal plane is provided independently of the link mechanism including the first link member, the second link member, and the substrate holding member ( Cited references 2, 3).
- the present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a transport robot that can reduce the lifting driving force required in the lifting driving means.
- Another object of the present invention is to provide a transfer robot that can realize a mechanism for moving the lifting drive means of the transfer robot in a horizontal plane while minimizing the complexity of the robot structure.
- a transfer robot rotates around a first link member configured to be rotatable around a first axis and a second axis positioned at a predetermined distance with respect to the first axis.
- a second link member configured to be capable of rotating, a holding member configured to be rotatable around a third axis located at a predetermined distance from the second axis and capable of holding an article, and at least the holding member.
- Elevating drive means for driving up and down, and the first link member, the second link member, and the holding member are connected in this order to form an arm link mechanism, and the elevating drive means Is arranged between the first link member and the holding member to constitute a part of the arm link mechanism.
- the elevating drive means is used to connect the second link member and the holding member.
- the elevating drive means includes a columnar member fixed to the second link member, and an elevating member provided so as to be movable up and down with respect to the columnar member, and the holding member Is provided on the elevating member so as to be rotatable around the third axis.
- the elevating drive means includes: a columnar member provided on the second link member so as to be rotatable around the third axis; and an elevating member provided so as to be movable up and down with respect to the columnar member. And the holding member is fixed to the elevating member.
- the elevating drive means is used to connect the first link member and the second link member.
- the elevating drive means includes a columnar member fixed to the first link, and an elevating member provided to be movable up and down with respect to the columnar member, and the second link.
- the member is provided on the elevating member so as to be rotatable around the second axis, and the holding member is provided on the second link member so as to be rotatable around the third axis.
- the elevating drive means includes: a columnar member provided on the first link member so as to be rotatable about the second axis; and an elevating member provided so as to be able to move up and down relative to the columnar member.
- the second link member is fixed to the elevating member.
- the predetermined distance between the first axis and the second axis is equal to the predetermined distance between the second axis and the third axis.
- the holding member that holds the article at the last retracted position in the operation range control, the article held by the holding member, the first link member, the second link member, and the elevating drive means.
- the holding member, the region, and the holding member, so that the region is disposed in a swivel region when rotating around the first axis with a distance from the first axis to the farthest point of the article or the holding member as a radius The first link member, the second link member, the dimensions of the elevating drive means, and the direction of the elevating drive means are selected.
- the first link member, the second link member, and the holding member are connected in this order to form an arm link mechanism, and the lifting drive means holds the first link member. Since it is disposed between the members and forms a part of the arm link mechanism, at least the first link member can be excluded from the lift target by the lift drive means, and therefore the lift drive required in the lift drive means The force can be reduced.
- the lifting / lowering drive means can be lifted while minimizing the complexity of the robot structure. Horizontal movement of the driving means can be realized.
- FIG. 1 shows the figure which showed the conveyance robot by one Embodiment of this invention
- (a) is a top view
- (b) is a side view.
- the schematic block diagram of the conveyance robot shown in FIG. The figure which showed the outline of the internal structure of the conveyance robot shown in FIG.
- FIG. 2A and 2B are diagrams for explaining a rotation operation of a robot arm holding a substrate in the transfer robot shown in FIG. 1, in which FIG. 1A shows a state facing one rack direction, and FIG. The state facing the direction of is shown.
- FIG. 6 is a schematic configuration diagram of the transfer robot shown in FIG. 5. The figure which showed the outline of the internal structure of the conveyance robot shown in FIG.
- FIG. 6 is a diagram for explaining the operation of the transfer robot shown in FIG.
- FIG. 5 shows a state in which the substrate holding unit is retracted most in the operation range restriction control, and (c) shows the substrate holding unit, In the operation range restriction control, the most advanced state is shown, and (b) shows an intermediate state between the state (a) and the state (c).
- 6A and 6B are diagrams for explaining a rotation operation of a robot arm holding a substrate in the transfer robot shown in FIG. 5, in which FIG. 5A shows a state facing one rack direction, and FIG. The state facing the direction of is shown. It is the figure which showed the conveyance robot by further another embodiment of this invention, (a) is a top view, (b) is a side view.
- FIG. 10 is a schematic configuration diagram of the transfer robot shown in FIG. 9.
- FIGS. 10A and 10B are diagrams for explaining a rotation operation of a robot arm holding a substrate in the transfer robot shown in FIG. 9, in which FIG. The state facing the direction of is shown. Schematic which showed the conveyance robot by the modification of embodiment shown in FIG.
- the transfer robot described below is suitable for transferring a large glass substrate, and includes a single arm.
- the transport robot according to the embodiment shown in FIG. 1 includes a base 1, and the base end of the first link member 2 is connected to the base 1 so as to be rotatable around the first axis L1. ing. A proximal end portion of the second link member 3 is connected to the distal end portion of the first link member 2 so as to be rotatable around a second axis L2 located at a predetermined distance D1 from the first axis L1.
- the elevating drive unit 4 includes a columnar member 5 extending in the vertical direction and an elevating unit provided so as to be movable up and down with respect to the columnar member 5. And a member 6.
- the columnar member 5 of the elevating drive means 4 is formed of a hollow member whose front surface is open, and its horizontal cross section is rectangular. The lower end portion of the columnar member 5 is fixedly provided on a portion of the second link member 3 on the front end side with respect to the second axis L2.
- the elevating member 6 of the elevating drive means 4 has an elongated shape extending in the horizontal direction, and the elevating member 6 itself forms a part of the substantial length of the robot arm in the horizontal direction. As shown in FIG. 1A, the elevating member 6 is formed so as to protrude obliquely with respect to the front surface of the columnar member 5.
- the base end portion 8 of the substrate holding member 7 is connected to the lower surface of the distal end portion of the elevating member 6 so as to be rotatable around the third axis L3.
- the third axis L3 is located at a predetermined distance D2 from the second axis L2, and this distance D2 is equal to the distance D1.
- a plurality of (in this example, two) finger portions 9 extend in the horizontal direction from the base end portion 8 of the substrate holding member 7, and the glass substrate S is held on the finger portions 9.
- the finger portion 9 is provided with means (not shown) for sucking and holding the substrate S.
- the rotation axes L1, L2, and L3 are parallel to each other and extend in the Z-axis direction (vertical direction), and the substrate holding member 7 has a degree of freedom in the X-axis, Y-axis, and Z-axis directions. Then, the displacement is driven.
- the lifting drive means 4 is disposed between the second link member 3 and the substrate holding member 7 and constitutes a part of the arm link mechanism.
- the transfer robot includes a robot control unit 10, and the robot control unit 10 uses the first link drive unit 11, the second link drive unit 12, and the lift drive.
- the drive of the means 4 and the wrist shaft drive means 13 is controlled.
- the first rotating shaft 14 is fixedly provided on the lower surface of the base end portion of the first link member 2.
- the first rotating shaft 14 is rotationally driven by a servo motor 16 via a power transmission mechanism 15, whereby the first link member 2 rotates around the first axis L ⁇ b> 1.
- the power transmission mechanism 15 and the servo motor 16 constitute the first link driving means 11 shown in FIG.
- a second rotating shaft 17 is fixedly provided on the lower surface of the base end portion of the second link member 3, and the second rotating shaft 17 is formed on the upper surface of the distal end portion of the hollow first link member 2. It is rotatably inserted into the hole.
- the second rotary shaft 17 is rotationally driven by a servo motor 19 via a power transmission mechanism 18 in the first link member 2, whereby the second link member 3 rotates around the second axis L2.
- the power transmission mechanism 18 and the servo motor 19 constitute the second link driving means 12 shown in FIG.
- the elevating drive means 4 is fixedly provided on the upper surface of the tip side portion of the second link member 3.
- the elevating drive means 4 includes a drive mechanism (linear motion mechanism) for elevating the elevating member 6, and various mechanisms can be adopted as this drive mechanism.
- a pair of pulleys 20 and 21 are provided at the upper and lower ends inside the columnar member 5 formed of a hollow member, and a belt 22 is stretched between the pulleys. Fix it. Then, the pulley 20 is rotationally driven by the servo motor 23 to raise and lower the elevating member 6 together with the belt 22.
- a third rotating shaft (wrist shaft) 24 is fixedly provided on the upper surface of the base end portion of the substrate holding member 7, and the third rotating shaft 24 is formed on the lower surface of the distal end portion of the hollow elevating member 6. It is rotatably inserted in the formed hole.
- the third rotating shaft 24 is rotationally driven by a servo motor 26 via a power transmission mechanism 25 in the elevating member 6, whereby the substrate holding member 7 rotates about the third axis L 3.
- the power transmission mechanism 25 and the servo motor 26 constitute the wrist shaft driving means 13 shown in FIG.
- a gear power transmission mechanism equipped with a reduction gear is used for the power transmission mechanisms 15, 18, 25.
- the power of the servo motors 16, 19, and 26 is transmitted to the input side of the speed reducer, and the torque is amplified with a predetermined amplification ratio, and the rotational speed is reduced with the predetermined speed reduction ratio, so that the output side of the speed reducer Is output from.
- each of the rotary shafts 14, 17 and 24 is rotationally driven by the power output from the output side of the speed reducer.
- substrate holding member 7 is rotationally driven.
- the rotary shafts 14, 17, and 24 may be rotationally driven by a direct drive motor.
- the drive mechanism (linear motion mechanism) in the elevation drive means 4 it can be realized by a ball screw mechanism 30 using a rotary motor capable of adjusting the amount of angular displacement.
- the ball screw mechanism 30 includes a screw rod 31, a screwed body 32 that is screwed to the screw rod 31, a rotary motor 33 that rotationally drives the screw rod 31, and the power of the rotary motor 33 is transmitted to the screw rod 31. And a base end portion of the elevating member 6 is fixed to the screwed body 32.
- the servo motor 16 and the power transmission mechanism 15 that rotationally drive the first link member 2 are disposed inside the first link member 2, and the first power transmission mechanism 15 and the first power transmission mechanism 15 are connected to each other.
- a reduction gear 35 is provided between the rotary shaft 14 and the rotary shaft 14.
- a servo motor 19 and a power transmission mechanism 18 that rotationally drive the second link member 3 are disposed inside the second link member 3, and the power transmission mechanism 18 and the A reduction gear 36 is provided between the two rotation shafts 17. Further, a speed reducer 37 is also provided between the third rotating shaft (wrist shaft) 24 and the power transmission mechanism 25.
- the robot control means 10 includes servomotors 16, 19, 23, 26 of the first link drive means 11, second link drive means 12, lift drive means 4, and wrist shaft drive means 13. By obtaining the angular positions of 16, 19, 23, and 26, each of the driving means 11, 12, 4, and 13 can be feedback-controlled. As a result, the substrate holding member 7 can be accurately aligned with the target position.
- the substrate holding member 7 shown in FIG. 4A is centered on the first axis L1 from the position where the substrate holding member 7 is most retracted in the operation range restriction control (that is, on the operation range soft limit or the normal operation range).
- the first link member 2 is rotated clockwise as viewed from above.
- the second link member 3 rotates about the second axis L2 counterclockwise when viewed from above (FIGS. 4B and 4C).
- the substrate holding member 7 also rotates clockwise around the third axis L3 as viewed from above, and the orientation of the substrate holding member 7 is maintained constant.
- the third axis L3 moves along a common straight line M passing through the first axis L1 when the substrate holding member 7 moves back and forth.
- the common straight line M is abbreviated to the center line of the substrate holding member 7, and the center of the substrate S held by the substrate holding member 7 moves along the common straight line M.
- the lift driving means 4 is retracted to the position shown in FIG. 4A, so that the center of gravity of the substrate S approaches the first axis L1, and the lift driving means 4 is moved to the first axis as much as possible. It is possible to minimize the turning radius closer to L1.
- the substrate holding member 7 that holds the substrate S at the most retracted position in the operation range control the substrate S that is held by the substrate holding member 7, the first link member 2,
- the swivel region when the region including the second link member 3 and the lifting / lowering driving means 4 makes one rotation around the first axis L1 with the distance from the first axis L1 to the farthest point of the substrate S or the substrate holding member 7 as a radius.
- the dimensions of the substrate holding member 7, the first link member 2, the second link member 3, the lifting drive means 4, and the direction of the lifting drive means 4 are selected so as to be arranged in R.
- the lifting drive means 4 is arranged between the second link member 3 and the substrate holding member 7, the part that is lifted and lowered by the lifting drive means 4 is the entire robot arm. Instead, only the substrate holding member 7 mounted on the elevating member 6 is provided. For this reason, the load concerning the raising / lowering member 6 of the raising / lowering drive means 4 reduces, and the drive force required in the raising / lowering drive means 4 can be reduced.
- the robot structure since the first link member 2 and the second link member 3 which are part of the robot arm are used as means for moving the lifting drive means 4 in the horizontal plane, the robot structure
- the elevation drive means 4 can be moved horizontally while minimizing the complexity of the above.
- the raising / lowering drive means 4 is provided on the second link member 3 at the tip end side of the second axis L2, as shown in FIG. 4A, the substrate holding member In the state where 7 is most retracted in the operation range restriction control, the elevating drive means 4 can be installed so as to be at a position where interference with the substrate S and the substrate holding member 7 can be avoided.
- the center of gravity of the robot arm holding the substrate S is made as close as possible to the first axis L1, and the turning radius of the elevating drive means 4 is minimized, so that it is necessary at the time of rotation.
- the power can be reduced, and the rotation exclusive area occupied by the substrate S and the robot arm holding the substrate S during rotation can be minimized.
- the columnar member 5 of the elevating drive means 4 has a square cross section, and the elevating drive means 4 is arranged so that one side of the square cross section and one side of the substrate S are parallel. .
- the lifting drive means 4 and the substrate S can be made as close as possible, and therefore the second axis L2 with respect to the position of the lifting drive means 4 on the second link member 3.
- the substrate S can be retracted as much as possible while being disposed at a position close to. Thereby, the rotation exclusive area which the board
- the raising / lowering driving means 4 is moved to the retracted position (FIG. 4A) by the synthesis operation of the operation of the first link member 2 and the operation of the second link member 3, the elevation drive is performed during the synthesis operation.
- the means 4 can move while reducing the distance from the first axis L1. For this reason, compared with the case where it moves to a circular arc shape by one link member, while the direction of the board
- the elevating drive means 4 is provided on the second link member 3 at the tip end side of the second axis L2, as shown in FIG.
- the driving means 4 can be positioned on a common straight line M. For this reason, in the state which extended the arm, it can prevent that the weight of the raising / lowering drive means 4 acts on the direction (roll direction) which twists an arm.
- the elevating member 6 is arranged on the side surface of the columnar member 5 of the elevating drive means 4 so that the substrate holding member 7 can be moved up and down along with the elevating member 6 along the side surface of the columnar member 5,
- the lowermost position of the substrate holding member 7 can be made lower than that of the pantograph type lifting means.
- the transport robot according to the embodiment shown in FIG. 5 includes a base 1A, and the base end portion of the first link member 2A is connected to the base 1A so as to be rotatable around the first axis L1. ing.
- a proximal end portion of the second link member 3A is rotatably connected to a distal end portion of the first link member 2A around a second axis L2 located at a predetermined distance D1 from the first axis L1.
- 3 A of 2nd link members in this embodiment are longer than the 2nd link member 3 in embodiment shown in FIG. 1, and have the same length as 2 A of 1st link members.
- a lift drive means 4A is provided at the tip of the second link member 3A.
- the lift drive means 4A is provided with a columnar member 5A extending in the vertical direction and capable of moving up and down with respect to the columnar member 5A.
- Elevating member 6A is integrally formed with the base end portion 8A of the substrate holding member 7A.
- the columnar member 5A of the elevating drive means 4A is formed of a hollow member whose front surface is open, and its horizontal cross section is rectangular.
- the lower end portion of the columnar member 5A is provided at the distal end portion of the second link member 3A so as to be rotatable around the third axis L3.
- the third axis L3 is located at a predetermined distance D2 from the second axis L2, and this distance D2 is equal to the distance D1.
- a plurality (two in this example) of finger portions 9A extend in the horizontal direction from the base end portion 8A of the substrate holding member 7A, and the glass substrate S is held on the finger portions 9A.
- the finger portion 9A is provided with means (not shown) for attracting and holding the substrate S.
- the rotation axes L1, L2, and L3 are parallel to each other and extend in the Z-axis direction (vertical direction), and the substrate holding member 7A has a degree of freedom in the X-axis, Y-axis, and Z-axis directions. Then, the displacement is driven.
- the lifting drive means 4A is disposed between the second link member 3A and the substrate holding member 7A, and constitutes a part of the arm link mechanism. Further, the columnar member 5A of the elevating drive means 4A is rotatably provided at the tip of the second link member 3A, and the columnar member 5A functions as a rotation axis of the substrate holding member 7A.
- the transfer robot As shown in FIGS. 5 and 6, the transfer robot according to the present embodiment is provided with a robot control means 10A.
- this robot control means 10A By this robot control means 10A, the first link drive means 11A, the second link drive means 12A, and the lift drive.
- the driving of the means 4A and the wrist shaft driving means 13A is controlled.
- the first rotating shaft 14A is fixedly provided on the lower surface of the base end portion of the first link member 2A.
- the first rotating shaft 14A is rotationally driven by a servo motor 16A via a power transmission mechanism 15A, whereby the first link member 2A rotates around the first axis L1.
- the power transmission mechanism 15A and the servo motor 16A constitute the first link driving means 11A shown in FIG.
- a second rotating shaft 17A is fixedly provided on the lower surface of the base end portion of the second link member 3A, and the second rotating shaft 17A is formed on the upper surface of the distal end portion of the hollow first link member 2A. It is rotatably inserted into the hole.
- the second rotating shaft 17A is rotationally driven by a servo motor 19A via a power transmission mechanism 18A in the first link member 2A, and thereby the second link member 3A rotates around the second axis L2.
- the power transmission mechanism 18A and the servo motor 19A constitute the second link driving means 12A shown in FIG.
- a third rotating shaft (wrist shaft) 24A is fixedly provided at the lower end of the columnar member 5A of the elevating drive means 4A, and the third rotating shaft 24A is the tip of the hollow second link member 3A. A hole formed in the upper surface is rotatably inserted.
- the third rotating shaft 24A is rotationally driven by a servo motor 26A via a power transmission mechanism 25A in the second link member 3A, whereby the lifting drive means 4A rotates around the third axis L3.
- the power transmission mechanism 25A and the servo motor 26A constitute the wrist shaft driving means 13A shown in FIG.
- the elevating drive means 4A includes a drive mechanism (linear motion mechanism) for raising and lowering the elevating member 6A, and various mechanisms can be adopted as this drive mechanism.
- a pair of pulleys 20A and 21A are provided at the upper and lower ends inside the columnar member 5A formed of a hollow member, a belt 22A is stretched between them, and the belt 22A is integrated with the substrate holding member 7A.
- the elevating member 6A formed in the above is fixed.
- the pulley 20A is rotationally driven by the servo motor 23A, so that the elevating member 6A and the substrate holding member 7A are raised and lowered together with the belt 22A.
- a gear power transmission mechanism equipped with a reduction gear is used for the power transmission mechanisms 15A, 18A, and 25A.
- the power of the servo motors 16A, 19A, and 26A is transmitted to the input side of the speed reducer, and the torque is amplified with a predetermined amplification ratio, and the rotation speed is reduced with a predetermined speed reduction ratio, so that the output side of the speed reducer Is output from.
- each of the rotating shafts 14A, 17A, and 24A is rotationally driven by the power output from the output side of the speed reducer.
- each of the first link member 2A, the second link member 3A, and the substrate holding member 7A is rotationally driven.
- the rotary shafts 14A, 17A, and 24A may be rotationally driven by a direct drive motor.
- the drive mechanism in the elevation drive means 4A, it can be realized by a ball screw mechanism using a rotary motor capable of adjusting the amount of angular displacement.
- This ball screw mechanism includes a screw rod, a screwed body that is screwed to the screw rod, and a rotary motor that rotationally drives the screw rod, and the elevating member 6A is fixed to the screwed body.
- the robot control means 10A includes servo motors 16A, 19A, 26A and 23A encoders of the first link drive means 11A, second link drive means 12A, wrist shaft drive means 13A, and lift drive means 4A.
- servo motors 16A, 19A, 26A and 23A encoders of the first link drive means 11A, second link drive means 12A, wrist shaft drive means 13A, and lift drive means 4A By obtaining the angular positions of 16A, 19A, 26A, and 23A, it is possible to feedback control each of the driving units 11A, 12A, 13A, and 4A. As a result, the substrate holding member 7A can be accurately aligned with the target position.
- the first link member 2A is clockwise when viewed from above, with the first axis L1 as the center. Rotate. Then, in conjunction with the rotation of the first link member 2A, the second link member 3A rotates about the second axis L2 counterclockwise when viewed from above (FIGS. 8B and 8C). . At this time, the raising / lowering driving means 4A rotates together with the substrate holding member 7A clockwise about the third axis L3 as viewed from above, and the orientation of the substrate holding member 7A is maintained constant.
- the third axis L3 moves along a common straight line M that passes through the first axis L1.
- the common straight line M substantially coincides with the center line of the substrate holding member 7A, and the center of the substrate S held by the substrate holding member 7A moves along the common straight line M.
- the lifting drive means 4 is retracted to the position shown in FIG. 8A, so that the center of gravity of the substrate S approaches the first axis L1 and the turning radius of the lifting drive means 4 is minimized. It is possible to make it.
- the substrate holding member 7A that holds the substrate S at the last retracted position in the operation range control the substrate S that is held by the substrate holding member 7A, the first link member 2A,
- the dimensions of the substrate holding member 7A, the first link member 2A, the second link member 3A, the lifting drive means 4A, and the direction of the lifting drive means 4A are selected so as to be arranged in R.
- the raising / lowering driving means 4A is arranged between the second link member 3A and the substrate holding member 7A. Instead, it is only the substrate holding member 7A formed integrally with the elevating member 6A. For this reason, the load concerning the raising / lowering member 6A of the raising / lowering drive means 4A reduces, and the driving force required in the raising / lowering drive means 4A can be reduced.
- the elevating drive means 4A is provided rotatably with respect to the second link member 3A, and the substrate holding member 7A is provided directly on the elevating drive device 4A. Since it did in this way, wrist axis drive means 13A can be excluded from the raising / lowering object, and the required driving force of raising / lowering driving means 4A can further be reduced.
- the center of gravity of the robot arm holding the substrate S is made as close as possible to the first axis L1, and the turning radius of the elevating drive means 4 is minimized, so that it is necessary at the time of rotation.
- the power can be reduced, and the rotation exclusive area occupied by the substrate S and the robot arm holding the substrate S during rotation can be minimized.
- first link member 2A and the second link member 3A which are part of the robot arm, are used as means for moving the lifting drive means 4A in the horizontal plane.
- the elevation drive means 4A can be moved horizontally while minimizing the complexity of the above.
- the raising / lowering driving means 4 is moved to the retracted position (FIG. 8A) by the synthesis operation of the operation of the first link member 2A and the operation of the second link member 3A, the elevation drive is performed during the synthesis operation.
- the means 4 can move while reducing the distance from the first axis L1. For this reason, as compared with the case of moving in a circular arc shape by a single link member, the moving distance of the elevating drive means 4A itself can be shortened while keeping the orientation of the substrate S constant, and the elevating and lowering being a heavy object Since the driving unit 4 can move while reducing the distance from the first axis L1, the driving force required for the movement can be reduced.
- the lifting drive means 4A is placed on a common straight line M in a state where the robot arm is extended. Can be positioned. For this reason, in the state which extended the arm, it can prevent that the weight of the raising / lowering drive means 4A acts in the direction (roll direction) which twists an arm.
- the lifting drive means 4A is positioned on the common straight line M throughout the substrate transport operation, and the lifting drive means 4A moves linearly, thereby suppressing the occurrence of shaking during transport. be able to.
- the elevating member 6A is arranged on the side surface of the columnar member 5A of the elevating drive means 4A, and the substrate holding member 7A can be moved up and down along with the elevating member 6A along the side surface of the columnar member 5A, Compared with the pantograph type lifting means, the lowest position of the substrate holding member 7A can be made lower.
- the transport robot according to the embodiment shown in FIG. 9 includes a base 1B, and the base end of the first link member 2B is connected to the base 1B so as to be rotatable around the first axis L1. ing.
- a lift drive means 4B is provided at the tip of the first link member 2B.
- the lift drive means 4B is provided so as to be vertically movable with respect to the columnar member 5B extending in the vertical direction.
- the columnar member 5B of the elevating drive means 4B is formed of a hollow member whose front surface is open, and its horizontal cross section forms a rectangle. The lower end portion of the columnar member 5B is fixed to the upper surface of the tip portion of the first link member 2B.
- the base end portion of the second link member 3B is connected to the lift member 6B of the lift drive means 4B so as to be rotatable around the second axis L2 located at a predetermined distance D1 from the first axis L1.
- the elevating member 6B has a protruding shape that extends in the horizontal direction and is bent.
- the base end portion of the substrate holding member 7B is coupled to the lower surface of the distal end portion of the second link member 3B so as to be rotatable around the third axis L3.
- the third axis L3 is located at a predetermined distance D2 from the second axis L2, and this distance D2 is equal to the distance D1.
- a plurality of (two in this example) finger portions 9B extend in the horizontal direction from the base end portion 8B of the substrate holding member 7B, and the glass substrate S is held on the finger portions 9B.
- the finger portion 9B is provided with means (not shown) for sucking and holding the substrate S.
- the rotation axes L1, L2, and L3 are parallel to each other and extend in the Z-axis direction (vertical direction), and the substrate holding member 7B has a degree of freedom in the X-axis, Y-axis, and Z-axis directions. Then, the displacement is driven.
- the lifting drive means 4B is disposed between the first link member 2B and the second link member 3B and constitutes a part of the arm link mechanism.
- the transfer robot includes the robot control means 10B.
- the robot control means 10B By the robot control means 10B, the first link drive means 11B, the second link drive means 12B, and the lift drive.
- the driving of the means 4B and the wrist shaft driving means 13B is controlled.
- the first rotating shaft 14B is fixedly provided on the lower surface of the base end portion of the first link member 2B.
- the first rotating shaft 14B is rotationally driven by a servo motor 16B via a power transmission mechanism 15B, whereby the first link member 2B rotates around the first axis L1.
- the power transmission mechanism 15B and the servo motor 16B constitute the first link driving means 11B shown in FIG.
- the elevating drive means 4B is fixedly provided on the upper surface of the tip of the first link member 2B.
- the raising / lowering drive means 4B is provided with the drive mechanism (linear motion mechanism) for raising / lowering the raising / lowering member 6B, and various mechanisms are employable as this drive mechanism.
- a pair of pulleys 20B and 21B are provided at the upper and lower ends inside the columnar member 5B formed of a hollow member, a belt 22B is stretched between them, and the base end of the elevating member 6B is attached to the belt 22B. Fix it. Then, the pulley 20B is rotationally driven by the servo motor 23B, so that the elevating member 6B is raised and lowered together with the belt 22B.
- a second rotating shaft 17B is fixedly provided on the upper surface of the base end portion of the second link member 3B, and the second rotating shaft 17B is a hole formed in the lower surface of the distal end portion of the hollow elevating member 6B. Is inserted in a rotatable manner.
- the second rotary shaft 17B is rotationally driven by a servo motor 19B via a power transmission mechanism 18B in the elevating member 6B, whereby the second link member 3B rotates around the second axis L2.
- the power transmission mechanism 18B and the servo motor 19B constitute the second link driving means 12B shown in FIG.
- a third rotation shaft (wrist shaft) 24B is fixedly provided on the upper surface of the base end portion of the substrate holding member 7B, and the third rotation shaft 24B is formed on the lower surface of the distal end portion of the second link member 3B. It is rotatably inserted into the hole.
- the third rotating shaft 24B is rotationally driven by the servo motor 26B via the power transmission mechanism 25B in the second link member 3B, and thereby the substrate holding member 7B rotates around the third axis L3.
- the power transmission mechanism 25B and the servo motor 26B constitute the wrist shaft driving means 13B shown in FIG.
- a gear power transmission mechanism equipped with a reduction gear is used for the power transmission mechanisms 15B, 18B, and 25B.
- the power of the servo motors 16B, 19B, and 26B is transmitted to the input side of the speed reducer, and the torque is amplified with a predetermined amplification ratio, and the rotation speed is reduced with the predetermined speed reduction ratio, so that the output side of the speed reducer Is output from.
- each of the rotating shafts 14B, 17B, and 24B is rotationally driven by the power output from the output side of the speed reducer.
- substrate holding member 7B is rotationally driven.
- the rotary shafts 14B, 17B, and 24B may be rotationally driven by a direct drive motor.
- the drive mechanism in the elevating drive means 4B, it can be realized by a ball screw mechanism using a rotary motor capable of adjusting the amount of angular displacement.
- This ball screw mechanism includes a screw rod, a screwed body that is screwed to the screw rod, and a rotary motor that rotationally drives the screw rod, and a base end portion of the elevating member 6B is fixed to the screwed body.
- the robot control means 10B includes servo motors 16B, 23B, 19B, and 26B encoders of the first link drive means 11B, the lift drive means 4B, the second link drive means 12B, and the wrist shaft drive means 13B.
- servo motors 16B, 23B, 19B, and 26B encoders of the first link drive means 11B, the lift drive means 4B, the second link drive means 12B, and the wrist shaft drive means 13B.
- the first link member 2B is clockwise when viewed from above with the first axis L1 as the center. It rotates with the raising / lowering drive means 4B. Then, in conjunction with the rotation of the first link member 2B, the second link member 3B rotates about the second axis L2 counterclockwise when viewed from above (FIGS. 12B and 12C). At this time, the substrate holding member 7B also rotates clockwise around the third axis L3 as viewed from above, and the orientation of the substrate holding member 7B is maintained constant.
- the third axis L3 moves along a common straight line M passing through the first axis L1 when the substrate holding member 7B is moved back and forth.
- the common straight line M substantially coincides with the center line of the substrate holding member 7B, and the center of the substrate S held by the substrate holding member 7B moves along the common straight line M.
- the substrate holding member 7B that holds the substrate S at the last retracted position in the operation range control the substrate S that is held by the substrate holding member 7B, the first link member 2B,
- the dimensions of the substrate holding member 7B, the first link member 2B, the second link member 3B, the elevating drive means 4B, and the direction of the elevating drive means 4B are selected so as to be arranged in R.
- the lifting drive means 4B is arranged between the first link member 2B and the second link member 3B, the part to be moved up and down by the lifting drive means 4B is the robot arm. Only the second link 3B and the substrate holding member 7B attached to the elevating member 6 are not the entirety. For this reason, the load concerning the raising / lowering member 6B of the raising / lowering drive means 4B reduces, and the driving force required in the raising / lowering drive means 4B can be reduced.
- the center of gravity of the robot arm holding the substrate S is made as close as possible to the first axis L1, and the turning radius of the elevating drive means 4 is minimized, so that it is necessary at the time of rotation.
- the power can be reduced, and the rotation exclusive area occupied by the substrate S and the robot arm holding the substrate S during rotation can be minimized.
- the first link member 2B which is a part of the robot arm, is used as a means for moving the elevating drive means 4B in the horizontal plane, so that the robot structure can be kept from becoming complicated as much as possible.
- the elevation drive means 4B can be moved horizontally.
- the elevating member 6B is arranged on the side surface of the columnar member 5B of the elevating drive means 4B so that the substrate holding member 7B can be moved up and down along with the elevating member 6B along the side surface of the columnar member 5B, Compared with the pantograph type lifting and lowering means, the lowermost position of the substrate holding member 7B can be made lower.
- the columnar member 5B of the elevating drive means 4B is moved around the second axis L2 to the first link member 2B. While providing rotatably, you may make it provide the 2nd link member 3B fixed to the raising / lowering member 6B.
- the second rotating shaft 17B is provided at the lower end of the columnar member 5B, and the second link driving means 12B for rotating the second rotating shaft 17B is used for the first link member 2B. Arranged inside.
- each servo motor is provided on each rotary shaft so that it can be driven individually.
- a belt is placed between the rotary shafts, and one of the rotary shafts
- the servo motor for the other rotating shaft may be omitted so that the rotational force is transmitted to the other rotating shaft.
- the drive mechanism in the lifting drive means may be a linear motion mechanism such as a rack and pinion, a linear motor, or a cylinder.
Abstract
Description
Claims (9)
- 第1軸線周りに回転可能に構成された第1リンク部材と、
前記第1軸線に対して所定距離に位置する第2軸線周りに回転可能に構成された第2リンク部材と、
前記第2軸線に対して所定距離に位置する第3軸線周りに回転可能であり且つ物品を保持可能に構成された保持部材と、
少なくとも前記保持部材を昇降駆動するための昇降駆動手段と、を備え、
前記第1リンク部材、前記第2リンク部材、及び前記保持部材が、この順番で連結されてアームリンク機構を構成しており、前記昇降駆動手段が、前記第1リンク部材と前記保持部材との間に配置されて前記アームリンク機構の一部を構成している、搬送ロボット。 - 前記昇降駆動手段は、前記第2リンク部材と前記保持部材との連結に使用されている、請求項1記載の搬送ロボット。
- 前記昇降駆動手段は、前記第2リンク部材に固定して設けられた柱状部材と、前記柱状部材に対して昇降可能に設けられた昇降部材と、を有し、前記保持部材は、前記昇降部材に前記第3軸線周りに回転可能に設けられている、請求項2記載の搬送ロボット。
- 前記昇降駆動手段は、前記第2リンク部材に前記第3軸線周りに回転可能に設けられた柱状部材と、前記柱状部材に対して昇降可能に設けられた昇降部材と、を有し、前記保持部材は、前記昇降部材に固定して設けられている、請求項2記載の搬送ロボット。
- 前記昇降駆動手段は、前記第1リンク部材と前記第2リンク部材との連結に使用されている、請求項1記載の搬送ロボット。
- 前記昇降駆動手段は、前記第1リンクに固定して設けられた柱状部材と、前記柱状部材に対して昇降可能に設けられた昇降部材と、を有し、前記第2リンク部材は、前記昇降部材に前記第2軸線周りに回転可能に設けられており、前記保持部材は、前記第2リンク部材に前記第3軸線周りに回転可能に設けられている、請求項5記載の搬送ロボット。
- 前記昇降駆動手段は、前記第1リンク部材に前記第2軸線周りに回転可能に設けられた柱状部材と、前記柱状部材に対して昇降可能に設けられた昇降部材と、を有し、前記第2リンク部材は、前記昇降部材に固定して設けられている、請求項5記載の搬送ロボット。
- 前記第1軸線と前記第2軸線との前記所定距離が、前記第2軸線と前記第3軸線との前記所定距離に等しい、請求項1乃至7のいずれか一項に記載の搬送ロボット。
- 動作範囲制御上の最後退位置において物品を保持した前記保持部材、前記保持部材に保持された前記物品、前記第1リンク部材、前記第2リンク部材、前記昇降駆動手段を含む領域が、前記第1軸線から前記物品又は前記保持部材の最遠点までの距離を半径として前記第1軸線周りに1回転したときの旋回領域内に配置されるように、前記保持部材、前記第1リンク部材、前記第2リンク部材、前記昇降駆動手段の各寸法、前記昇降駆動手段の向きが選ばれていることを特徴とする、請求項1乃至8のいずれか一項に記載の搬送ロボット。
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US13/822,848 US9579804B2 (en) | 2010-11-30 | 2011-11-30 | Transfer robot |
CN201180051810.4A CN103189168B (zh) | 2010-11-30 | 2011-11-30 | 搬送机械手 |
KR1020137007092A KR101512912B1 (ko) | 2010-11-30 | 2011-11-30 | 반송 로봇 |
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KR101488649B1 (ko) * | 2008-10-07 | 2015-02-04 | 가와사키 쥬코교 가부시키가이샤 | 기판 반송 로봇 및 시스템 |
JP5620172B2 (ja) * | 2010-07-16 | 2014-11-05 | キヤノンアネルバ株式会社 | 基板搬送装置、電子デバイスの製造システムおよび電子デバイスの製造方法 |
KR101450478B1 (ko) * | 2013-11-25 | 2014-10-13 | 주식회사 윌리언스 | 필름전사 시스템 |
JP6588192B2 (ja) * | 2014-07-07 | 2019-10-09 | 株式会社ダイヘン | ワーク搬送装置 |
WO2016076722A2 (en) * | 2014-11-14 | 2016-05-19 | Mapper Lithography Ip B.V. | Load lock system and method for transferring substrates in a lithography system |
US10428220B2 (en) * | 2014-12-19 | 2019-10-01 | Merck Patent Gmbh | Particles for electrophoretic displays |
EP3238884B8 (en) * | 2014-12-26 | 2023-10-25 | Kawasaki Jukogyo Kabushiki Kaisha | Articulated robot and module therefor |
CN106956290B (zh) * | 2017-04-17 | 2019-09-10 | 京东方科技集团股份有限公司 | 机械臂及其操作方法、机械臂装置及显示面板生产设备 |
JP6873881B2 (ja) * | 2017-10-13 | 2021-05-19 | 日本電産サンキョー株式会社 | 産業用ロボット |
CN109186451A (zh) * | 2018-08-22 | 2019-01-11 | 西安工程大学 | 一种多角度激光干涉测量用激光器夹持调整装置 |
CN110202565A (zh) * | 2019-05-30 | 2019-09-06 | 上海海事大学 | 微波炉高温食物抓取机械装置 |
CN111776747B (zh) * | 2020-07-31 | 2021-12-14 | 林铭兰 | 一种转运机构及采用该转运机构的马桶生产线 |
CN116803623A (zh) * | 2023-08-11 | 2023-09-26 | 盐城欧亚图自动化有限公司 | 用于无损检测设备的机械手 |
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US20130170935A1 (en) | 2013-07-04 |
CN103189168B (zh) | 2016-06-29 |
CN103189168A (zh) | 2013-07-03 |
JP2012115932A (ja) | 2012-06-21 |
US9579804B2 (en) | 2017-02-28 |
KR101512912B1 (ko) | 2015-04-16 |
JP5847393B2 (ja) | 2016-01-20 |
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