WO2021260975A1 - パレット及びパレット搬送システム - Google Patents

パレット及びパレット搬送システム Download PDF

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Publication number
WO2021260975A1
WO2021260975A1 PCT/JP2020/047554 JP2020047554W WO2021260975A1 WO 2021260975 A1 WO2021260975 A1 WO 2021260975A1 JP 2020047554 W JP2020047554 W JP 2020047554W WO 2021260975 A1 WO2021260975 A1 WO 2021260975A1
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WO
WIPO (PCT)
Prior art keywords
pallet
transport direction
contact
deceleration
conveyor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2020/047554
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English (en)
French (fr)
Japanese (ja)
Inventor
進一 友山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nidec Corp
Original Assignee
Nidec Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nidec Corp filed Critical Nidec Corp
Priority to JP2022532252A priority Critical patent/JPWO2021260975A1/ja
Priority to CN202080101788.9A priority patent/CN115697866A/zh
Publication of WO2021260975A1 publication Critical patent/WO2021260975A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
    • B65G47/74—Feeding, transfer, or discharging devices of particular kinds or types
    • B65G47/88—Separating or stopping elements, e.g. fingers

Definitions

  • the present invention relates to a pallet and a pallet transfer system.
  • a pallet that has a mounting table on which a transported object can be placed and is transported by a conveyor is known.
  • the pallet is conveyed to a predetermined position by the conveyor, it is stopped by a stopper or the like.
  • a pallet that suppresses an impact when it comes into contact with a stopper or the like and prevents rebound from the stopper.
  • Patent Document 1 a pallet in which an inclined portion and a positioning recess are located adjacent to each other in the front portion in the traveling direction and a stop configured to swing in a direction parallel to the transport surface of the conveyor.
  • a pallet deceleration stop device with a positioning roller for use is disclosed. The stop positioning roller is urged in the swing direction by an elastic body.
  • the pallet has the stopping positioning roller in contact with the inclined portion at a predetermined position on the conveyor.
  • the inclined portion causes the stopping positioning roller to swing.
  • the conveyor is decelerated by the urging force of the stopping positioning roller.
  • the stopping positioning roller is engaged with the positioning recess. In this way, the pallet is decelerated and stopped by the stopping positioning roller.
  • the stopping positioning roller is brought into contact with the inclined portion of the pallet from the front of the pallet in a state of being projected from the transport surface of the conveyor. That is, in the deceleration stop device, when the pallet is decelerated and stopped, the stop positioning roller is located in front of the pallet and above the transport surface of the conveyor. Therefore, in the deceleration / stopping device, when other pallets are arranged in a row before and after the pallet to be decelerated, the stopping positioning roller may be arranged in front of the pallet to be decelerated and above the transport surface of the conveyor. Can not.
  • An object of the present invention is to provide a pallet and a pallet transport system capable of decelerating even if other pallets are arranged in a row before and after the transport direction.
  • the pallet according to the embodiment of the present invention is a pallet that has a mounting table on which a conveyed object can be placed and is conveyed by a conveyor.
  • This pallet has a contact portion with which the speed reducing device for decelerating the pallet comes into contact, and an insertion portion into which the speed reducing device is inserted. It is located at least one of the rear ends in the transport direction of.
  • the pallet transport system includes a pallet having a mounting table on which a transported object can be placed, a conveyor having a transport surface for transporting the pallet, a deceleration unit in contact with the pallet, and the deceleration. It is provided with an urging portion that urges the portion toward the pallet.
  • the pallet has a contact portion that comes into contact with the deceleration portion and an insertion portion into which the deceleration portion is inserted. Located on at least one of the ends.
  • deceleration can be performed even if other pallets are arranged in a row before and after the transport direction.
  • FIG. 1 is a diagram showing a schematic configuration of a pallet transfer system according to the first embodiment of the present invention.
  • FIG. 2 is a side view showing a schematic configuration of a pallet according to the first embodiment of the present invention.
  • FIG. 3 is a plan view showing a schematic configuration of a pallet according to the first embodiment of the present invention.
  • FIG. 4 is a side view showing a state in which the pallet is located at the working position and the standby position in the pallet transport system according to the first embodiment of the present invention.
  • FIG. 5 is a side view showing a state in which the pallet is carried out from the working position in the pallet transport system according to the first embodiment of the present invention.
  • FIG. 1 is a diagram showing a schematic configuration of a pallet transfer system according to the first embodiment of the present invention.
  • FIG. 2 is a side view showing a schematic configuration of a pallet according to the first embodiment of the present invention.
  • FIG. 3 is a plan view showing a schematic configuration of a pallet according to the first embodiment of
  • FIG. 6 is a side view showing a state in which the pallet is transported from the working position to the working position in the pallet transport system according to the first embodiment of the present invention.
  • FIG. 7 is a side view showing a state in which the arrangement of pallets is completed at the working position and the standby position in the pallet transport system according to the first embodiment of the present invention.
  • FIG. 8 is a diagram showing a control flow of the first stopper and the second stopper in the pallet transfer system according to the first embodiment of the present invention.
  • FIG. 9 is a side view showing a state of a force applied to the pallet 7 when the pallet 7 according to the first embodiment of the present invention comes into contact with the speed reducing device.
  • FIG. 10 is a side view showing a schematic configuration of a pallet 9 of the pallet transfer system according to the second embodiment of the present invention.
  • FIG. 11 is a side view showing a schematic configuration of a pallet 10 of the pallet transfer system according to the third embodiment of the present invention.
  • FIG. 12 is a plan view showing another embodiment of the pallet in the pallet transfer system according to the present invention.
  • FIG. 13 is a side view showing a schematic configuration of the pallet transfer system according to the fourth embodiment of the present invention.
  • FIG. 14 is a side view showing a schematic configuration of the pallet transfer system according to the fifth embodiment.
  • the transport direction of the pallet 7 (white arrow in FIG. 1) is referred to as “forward direction” or “downstream side of the transport direction”, and the direction opposite to the transport direction of the pallet 7 is “rear direction”. Or, it is called “upstream side in the transport direction”. Further, when viewed from the conveyed object M on the pallet 7, the left side with respect to the conveyed direction is referred to as “left direction”, and the right side with respect to the conveyed direction is referred to as "right direction”.
  • the expressions such as “fixed”, “connected” and “attached” are used not only when the members are directly fixed to each other but also via other members. Including the case where it is fixed. That is, in the following description, the expression such as fixing includes the meaning of direct and indirect fixing between members.
  • FIG. 1 is a diagram showing a schematic configuration of a pallet transfer system 1 according to the first embodiment of the present invention.
  • FIG. 2 is a side view showing a schematic configuration of the pallet 7 according to the first embodiment of the present invention.
  • FIG. 3 is a plan view showing a schematic configuration of the pallet 7 according to the first embodiment of the present invention.
  • the pallet transfer system 1 is a system that conveys the pallet 7 on which the conveyed object M is placed by the conveyor 2.
  • the pallet transfer system 1 is used, for example, as an inspection device for inspecting a transported object M, a processing device for processing a transported object M, and the like.
  • the pallet transfer system 1 includes a conveyor 2, a speed reducing device 3, a first stopper 4, a second stopper 5, a pallet holding portion 6, a plurality of pallets 7, and a control device 8.
  • the conveyor 2 can move in one direction by a drive mechanism (not shown).
  • the conveyor 2 is, for example, an endless band-shaped conveyor belt.
  • the upper surface of the conveyor 2 is a conveyor surface 2a that conveys a plurality of pallets 7.
  • the conveyor 2 includes a plurality of conveyor belts.
  • the conveyor 2 has a plurality of conveyor belts arranged side by side at a wide predetermined interval.
  • the speed reducing device 3 is a device for decelerating the pallet 7.
  • the speed reducing device 3 includes a deceleration unit 3a that comes into contact with the pallet 7 and an urging unit 3b that urges the deceleration unit 3a in the direction of the pallet 7.
  • the speed reducing device 3 is located below the transport surface 2a of the conveyor 2 and at least one in the width direction of the conveyor 2.
  • the speed reducing devices 3 may be provided at a plurality of locations side by side in the width direction of the conveyor 2.
  • the deceleration unit 3a is composed of, for example, a cylindrical roller that is rotatably supported and a support member.
  • the deceleration unit 3a is located below the conveyor 2 with the rollers facing upward. Further, the rotation direction of the rollers in the deceleration unit 3a is the same as the transport direction of the conveyor 2.
  • the deceleration unit 3a is configured to be movable in a direction perpendicular to the transport direction of the pallet 7. In the present embodiment, the deceleration unit 3a is configured to be movable in a direction perpendicular to the transport direction of the pallet 7 and in a direction perpendicular to the transport surface 2a of the conveyor 2.
  • the deceleration unit 3a moves from the lower limit position in a state where it does not protrude from the transport surface 2a of the conveyor 2 to the upper limit position where it protrudes from the transport surface 2a of the conveyor 2. Further, the deceleration unit 3a is located so as to be movable in the vertical direction between the conveyor belts constituting the conveyor 2 and the conveyor belts. That is, the deceleration unit 3a projects upward from the transport surface 2a from substantially the center in the width direction of the conveyor 2 at the upper limit position.
  • the urging portion 3b is composed of, for example, a compression spring.
  • the urging unit 3b urges the deceleration unit 3a in the direction of the conveyor surface 2a.
  • the urging portion 3b is urged in a direction perpendicular to the transport direction of the pallet 7 and in a direction perpendicular to the transport surface 2a of the conveyor 2.
  • the deceleration unit 3a is maintained at the upper limit position protruding upward from the transport surface 2a of the conveyor 2 by the urging force of the urging unit 3b.
  • the deceleration unit 3a moves toward the conveyor surface 2a of the conveyor 2.
  • the first stopper 4 is a member for stopping the pallet 7 mounted on the conveyor 2 with respect to the conveyor 2.
  • the first stopper 4 stops the pallet 7 at the working position Ws on the conveyor 2.
  • the working position Ws is a position where work such as processing, assembling, and inspection is performed on the conveyed object M placed on the pallet 7.
  • the first stopper 4 moves up and down at a predetermined position on the conveyor 2 by a drive mechanism (not shown).
  • the first stopper 4 lowers the pallet 7 to the work stop position SP1 where the pallet 7 can be stopped at the work position Ws with respect to the conveyor 2, and allows the pallet 7 to move from the work position Ws, the first stopper 4 moves the pallet 7. It rises to the work release position RP1 which does not hinder.
  • the second stopper 5 is a member for stopping the pallet 7 mounted on the conveyor 2 with respect to the conveyor 2.
  • the second stopper 5 is located upstream of the first stopper 4.
  • the second stopper 5 stops the pallet 7 at the standby position Ss on the conveyor 2.
  • the standby position Ss is a position where the pallet 7 on the upstream side is made to stand by on the conveyor 2 until the work at the work position Ws is completed.
  • the second stopper 5 moves up and down at a predetermined position on the conveyor 2 by a drive mechanism (not shown).
  • the stopper 5 does not hinder the movement of the pallet 7 when the pallet 7 is lowered to the standby stop position SP2 where the pallet 7 can be stopped at the standby position Ss with respect to the conveyor 2 and the movement of the pallet 7 from the standby position Ss is allowed. It rises to the standby release position RP2.
  • the pallet holding portion 6 prevents the pallet 7 mounted on the conveyor 2 from being lifted by the speed reducing device 3.
  • the pallet holding portion 6 is located above the transport surface 2a of the conveyor 2.
  • the pallet holding portion 6 has, for example, a holding roller at a position facing the transport surface 2a of the conveyor 2.
  • the rotation direction of the holding roller in the pallet holding portion 6 is the same as the conveying direction of the conveyor 2.
  • the pallet holding portion 6 is located at a position facing the deceleration portion 3a of the deceleration device 3.
  • the pallet holding portion 6 is located at a position where the holding roller comes into contact with the upper surface of the pallet 7 when the pallet 7 mounted on the conveyor 2 passes below the pallet holding portion 6. That is, the pallet holding portion 6 can come into contact with the pallet 7 while suppressing friction with the pallet 7 while the deceleration portion 3a is in contact with the pallet 7 conveyed on the conveyor 2.
  • the plurality of pallets 7 have a mounting table on which the conveyed object M can be placed, and are conveyed by the conveyor 2.
  • the plurality of pallets 7 are located side by side on the conveyor 2 in the transport direction.
  • the plurality of pallets 7 move in the transport direction together with the conveyor 2 while being mounted on the conveyor 2. Therefore, the transport direction of the pallet 7 is the moving direction of the conveyor 2, and is the direction in which the transport surface 2a of the conveyor 2 extends.
  • the pallet 7 has a pallet main body portion 7a, a contact portion 7b, and a protruding portion 7d.
  • the pallet 7 is made of, for example, engineering plastic.
  • the material of the bullet is not limited to engineering plastics.
  • the pallet body 7a is a flat plate-shaped member on which the conveyed object M can be placed.
  • the pallet main body 7a includes a mounting table on which the conveyed object M is placed.
  • the pallet body 7a has a rectangular shape in a plan view.
  • the valet main body is placed on the transport surface 2a of the conveyor 2.
  • a mounting table Mb for the conveyed object M is provided on the upper surface of the pallet main body 7a.
  • a contact portion 7b that comes into contact with the speed reducing device 3 is provided at the front end portion of the pallet body portion 7a in the transport direction.
  • the contact portion 7b has a contact inclined surface 7c.
  • the contact inclined surface 7c is an inclined surface that inclines in a direction away from the speed reducing device 3 toward the downstream side in the transport direction. That is, the front end portion of the pallet main body 7a in the transport direction has a contact inclined surface 7c that goes upward from the lower surface of the pallet main body 7a toward the downstream side in the transport direction.
  • the protruding portion 7d separates another pallet 7 adjacent to the pallet main body portion 7a.
  • the protruding portion 7d protrudes from the rear end portion of the pallet main body portion 7a in the transport direction toward the upstream side in the transport direction.
  • the protruding portion 7d comes into contact with the front end portion of the other pallet 7 adjacent to the upstream side in the transport direction of the pallet 7.
  • the protruding portion 7d separates the contact portion 7b of another pallet 7 adjacent to the upstream side in the transport direction of the pallet 7 from the pallet main body portion 7a.
  • a gap is created between the rear end of the pallet body 7a in the transport direction and the contact portion 7b of another pallet 7 adjacent to the upstream side of the pallet 7 in the transport direction.
  • an insertion portion 7e having a gap into which the deceleration portion 3a of the deceleration device 3 can be inserted is configured.
  • the insertion portion 7e is composed of a pallet main body portion 7a and a protruding portion 7d.
  • the pallet 7 configured in this way has a contact inclined surface 7c included in the contact portion 7b at the front end portion in the transport direction. Further, the pallet 7 has an insertion portion 7e at the rear end portion in the transport direction.
  • the front end portion of the pallet 7 in the transport direction comes into contact with the protruding portion 7d of the other pallet 7 on the downstream side in the transport direction of the pallet 7.
  • the protruding portion 7d provided at the rear end of the pallet 7 in the transport direction is the other pallet on the upstream side of the pallet 7 in the transport direction. 7 contacts the front end in the transport direction.
  • the insertion portion 7e of the other pallet 7 is located on the downstream side of the pallet 7 in the transport direction.
  • the insertion portion 7e of the pallet 7 is located on the downstream side of the other pallet 7 in the transport direction. In this way, even if the plurality of pallets 7 are located in a row on the upstream side in the transport direction or the downstream side in the transport direction, the insertion portion 7e is located on the downstream side in the transport direction of the pallets 7. ing.
  • the control device 8 is a device that controls the first stopper 4 and the second stopper 5.
  • the control device 8 may have a configuration in which a CPU, ROM, RAM, HDD, etc. are substantially connected by a bus, or may have a configuration including a one-chip LSI or the like.
  • the control device 8 stores various programs and data for controlling the operation of the first stopper 4 and the second stopper 5.
  • the control device 8 is electrically connected to an actuator of a control mechanism (not shown) of the first stopper 4 and an actuator of a control mechanism (not shown) of the second stopper 5.
  • the control device 8 can transmit a control signal to the actuator of the control mechanism of the first stopper 4 and the actuator of the control mechanism of the second stopper 5.
  • the control device 8 can control the actuator to switch the position of the first stopper 4 between the work stop position SP1 and the work release position RP1. Further, the control device 8 can control the actuator to switch the position of the second stopper 5 between the standby stop position SP2 and the standby release position RP2.
  • the control device 8 is set with a work position carry-out time Wt required for the pallet 7 to be carried out from the work position Ws by the conveyor 2. Further, the control device 8 is set with a standby position carry-out time St required for the pallet 7 to be carried out from the standby position Ss by the conveyor 2.
  • FIG. 4 is a side view showing a state in which the pallet 7 is arranged at the working position Ws and the standby position Ss in the pallet transport system 1.
  • FIG. 5 is a side view showing a state in which the pallet 7 is carried out from the working position Ws in the pallet transfer system 1.
  • FIG. 6 is a side view showing a state in which the pallet 7 is transported from the working position Ws to the working position Ws in the pallet transport system 1.
  • FIG. 7 is a side view showing a state in which the arrangement of the pallets 7 is completed at the working position Ws and the standby position Ss in the pallet transport system 1.
  • FIG. 8 is a diagram showing a control flow of the first stopper 4 and the second stopper 5 in the pallet transfer system 1.
  • the first stopper 4 is in a state of being switched to the work stop position SP1 as an initial state.
  • the second stopper 5 is in a state of being switched to the standby stop position SP2 as an initial state.
  • the pallet transfer system 1 has a first pallet 7A, a second pallet 7B, a third pallet 7C, and a fourth pallet 7D as a plurality of pallets 7. The pallet transfer system 1 is located in the order of the first pallet 7A, the second pallet 7B, the third pallet 7C, and the fourth pallet 7D from the downstream side to the upstream side in the transfer direction of the conveyor 2.
  • the first pallet 7A is stopped by the first stopper 4 at the working position Ws on the conveyor 2.
  • the first pallet 7A is located at the working position Ws.
  • the second pallet 7B is stopped by the second stopper 5 at the standby position Ss on the conveyor 2.
  • the second pallet 7B is located at the standby position Ss.
  • the third pallet 7C is connected to the second pallet 7B and stopped.
  • the fourth pallet 7D is connected to the third pallet 7C and stopped.
  • the insertion portion 7e of the second pallet 7B is located on the downstream side of the third pallet 7C in the transport direction. That is, the insertion portion 7e of the second pallet 7B is continuously located on the downstream side of the contact portion 7b in the third pallet 7C in the transport direction. Similarly, the insertion portion 7e of the third pallet 7C is continuously located on the downstream side of the contact portion 7b in the fourth pallet 7D in the transport direction.
  • the speed reducing device 3 of the pallet transfer system 1 is located near the insertion portion 7e of the second pallet 7B stopped at the standby position Ss.
  • the deceleration portion 3a of the speed reduction device 3 is inserted into the insertion portion 7e of the second pallet 7B from below the conveyor 2 by the urging force of the urging portion 3b. That is, the deceleration unit 3a is located on the downstream side of the contact portion 7b in the third pallet 7C in the transport direction. At this time, the deceleration unit 3a is not in contact with the contact portion 7b of the third pallet 7C.
  • step S110 the control device 8 of the pallet transfer system 1 operates the first stopper 4 at the work position Ws until the operation on the conveyed object M placed on the first pallet 7A is completed.
  • the state of switching to the stop position SP1 is maintained.
  • the control device 8 maintains a state in which the second stopper 5 is switched to the standby stop position SP2 until the work on the conveyed object M mounted on the first pallet 7A is completed at the working position Ws.
  • step S120 when the work on the conveyed object M placed on the first pallet 7A at the work position Ws is completed, the control device 8 sets the first stopper 4 at the work stop position SP1. Switch to the work release position RP1 from.
  • step S130 after the control device 8 switches the first stopper 4 to the work release position RP1, the work position carry-out time Wt required for the first pallet 7A to be carried out from the work position Ws by the conveyor 2 elapses. Until then, the state in which the first stopper 4 is switched to the work release position RP1 is maintained. The first pallet 7A is carried out from the working position Ws by the conveyor 2.
  • step S140 the control device 8 switches the first stopper 4 to the work stop position SP1 after the work position carry-out time Wt has elapsed.
  • step S150 the control device 8 takes the second stopper 5 at an arbitrary timing after the work position carry-out time Wt has elapsed after the first stopper 4 is switched to the work release position RP1. Is switched from the standby stop position SP2 to the standby release position RP2.
  • step S160 after the control device 8 switches the second stopper 5 to the standby release position RP2, the standby position carry-out time St required for the second pallet 7B to be carried out from the standby position Ss by the conveyor 2 elapses. Until then, the state in which the second stopper 5 is switched to the standby release position RP2 is maintained.
  • step S170 the control device 8 switches the second stopper 5 to the standby stop position SP2 after the work position carry-out time Wt has elapsed.
  • the second pallet 7B stopped at the second stopper 5 is carried out toward the working position Ws by the conveyor 2 when the second stopper 5 is switched to the standby release position RP2.
  • the second pallet 7B is conveyed downstream in the conveying direction until it comes into contact with the first stopper 4.
  • the second pallet 7B is located at the working position Ws by coming into contact with the first stopper 4.
  • the third pallet 7C which is stopped in a row on the upstream side of the second pallet 7B in the transport direction, is connected to the second pallet 7B. It is transported toward the downstream side in the transport direction.
  • the third pallet 7C comes into contact with the contact portion 7b of the speed reducing device 3 located on the downstream side in the transport direction of the third pallet 7C.
  • the third pallet 7C is decelerated by the speed reducing device 3, that is, the transport speed of the third pallet 7C is smaller than the transport speed of the second pallet 7B on the downstream side in the transport direction. Therefore, the third pallet 7C is separated from the second pallet 7B.
  • the second pallet 7B is conveyed from the standby position Ss to the work position Ws while the standby position carry-out time St elapses.
  • the third pallet 7C is decelerated by the speed reducing device 3
  • the standby position Ss has not been reached even after the standby position carry-out time St has elapsed.
  • the pallet transfer system 1 inserts the second pallet 7B between the second pallet 7B and the third pallet 7C by switching the second stopper 5 to the standby stop position SP2 after the standby position carry-out time St has elapsed. can do.
  • the third pallet 7C passes through the speed reducing device 3, it comes into contact with the second stopper 5 which has been switched to the standby stop position SP2, and is located at the standby position Ss.
  • the fourth pallet 7D connected to the upstream side in the transport direction of the third pallet 7C is transported toward the downstream side in the transport direction in a state of being connected to the third pallet 7C.
  • the fourth pallet 7D is continuously stopped on the upstream side in the transport direction of the third pallet 7C.
  • the pallet transfer system 1 configured as described above includes the first pallet 7A, the second pallet 7B, the third pallet 7C, and the fourth pallet 7D, which are a plurality of pallets 7 having a mounting table on which the conveyed object M can be placed.
  • a conveyor 2 having a transport surface 2a for transporting the first pallet 7A, the second pallet 7B, the third pallet 7C and the fourth pallet 7D, and the first pallet 7A, the second pallet 7B, the third pallet 7C and the fourth pallet.
  • the deceleration unit 3a of the deceleration device 3 that comes into contact with one of the pallets 7 of 7D, the urging unit 3b that urges the deceleration unit 3a toward one pallet 7, and one pallet 7 are stopped at the working position Ws.
  • the first stopper 4 for switching the work stop position SP1 and the work release position RP1 for carrying out one pallet 7 from the work position Ws, and one pallet 7 on the downstream side in the transport direction from the position of the deceleration unit 3a.
  • the standby stop position SP2 for stopping at the standby position Ss located on the upstream side of the work position Ws in the transport direction and the second stopper 5 for switching to the standby release position RP2 for carrying out one pallet 7 from the standby position Ss. I have.
  • the first stopper 4 switches from the work stop position SP1 to the work release position RP1 when the work on the conveyed object M of the first pallet 7A stopped at the work position Ws is completed.
  • the first stopper 4 switches to the work stop position SP1 after the work position carry-out time Wt required for the first pallet 7A at the work position Ws to be carried out from the work position Ws has elapsed.
  • the second stopper 5 is switched to the standby release position RP2 after the work position carry-out time Wt has elapsed after the first stopper 4 is switched to the work release position RP1.
  • the second stopper 5 switches to the standby stop position SP2 when the standby position carry-out time St required for the second pallet 7B stopped at the standby position Ss to be carried out from the standby position Ss elapses.
  • the third pallet 7C on the upstream side of the second pallet 7B in the standby position Ss is carried into the standby position Ss while being decelerated by the deceleration unit 3a.
  • the first stopper 4 of the pallet transfer system 1 switches between the work release position RP1 and the work stop position SP1 after the work position carry-out time Wt has elapsed after the work at the work position Ws with respect to the first pallet 7A is completed. ..
  • the second stopper 5 switches to the standby release position RP2 when the work position carry-out time Wt elapses. Further, the second pallet 7B is switched to the standby stop position SP2 when the standby position carry-out time St has elapsed after switching to the standby release position RP2.
  • the second stopper 5 is switched to the standby stop position SP2 and then waits. Stopped at position Ss.
  • the pallet transfer system 1 can switch between the first stopper 4 and the second stopper 5 based on the work position carry-out time Wt and the standby position carry-out time St.
  • FIG. 9 is a side view showing the state of the force applied to the pallet 7 when the pallet 7 comes into contact with the speed reducing device 3.
  • the second pallet 7B stopped at the standby position Ss by the second stopper 5 and the third pallet 7C stopped in a row on the upstream side in the transport direction of the second pallet 7B will be described. conduct.
  • the insertion portion 7e provided at the rear end portion of the second pallet 7B in the transport direction is adjacent to the front end portion of the third pallet 7C in the transport direction. That is, the insertion portion 7e of the second pallet 7B is located adjacent to the downstream side of the contact portion 7b provided at the front end portion of the third pallet 7C in the transport direction in the transport direction.
  • a contact portion 7b provided at the front end portion of the fourth pallet 7D in the transport direction is adjacent to the rear end portion of the third pallet 7C in the transport direction.
  • the deceleration section 3a of the speed reducer 3 is inserted into the insertion section 7e of the second pallet 7B from below the conveyor 2 by the urging force of the urging section 3b. That is, the deceleration unit 3a is located on the downstream side of the contact portion 7b in the third pallet 7C in the transport direction.
  • the pallet 7 is provided with the contact portion 7b at the front end portion in the transport direction and the insertion portion 7e at the rear end portion in the transport direction, so that the other pallets 7 are continuously positioned on the downstream side in the transport direction.
  • the second pallet 7B stopped at the second stopper 5 is carried out toward the downstream side in the transport direction by the conveyor 2 when the second stopper 5 is switched to the standby release position RP2.
  • the third pallet 7C which is stopped in a row on the upstream side of the second pallet 7B in the transport direction, is connected to the second pallet 7B. It is transported toward the downstream side in the transport direction.
  • the contact portion 7b of the third pallet 7C has a contact inclined surface 7c that inclines in a direction away from the deceleration portion 3a of the speed reducer 3 toward the downstream side in the transport direction. That is, the contact portion 7b has a contact inclined surface 7c that inclines in a direction approaching the deceleration portion 3a toward the upstream side in the transport direction.
  • the contact portion 7b of the third pallet 7C comes into contact with the deceleration portion 3a.
  • the third pallet 7C pushes the deceleration portion 3a toward the downstream side in the transport direction by the contact inclined surface 7c of the contact portion 7b.
  • the decelerating portion 3a is pushed down in the direction of the transport surface 2a of the conveyor 2 by the contact inclined surface 7c of the contact portion 7b.
  • the urging unit 3b of the speed reducing device 3 generates an urging force in the direction of pushing up the deceleration unit 3a in proportion to the pushing down amount of the deceleration unit 3a.
  • the deceleration unit 3a pushes the contact inclined surface 7c of the contact portion 7b vertically and upward in the transport direction by the force F.
  • the contact inclined surface 7c of the contact portion 7b of the third pallet 7C is parallel to the contact inclined surface 7c of the contact portion 7b and downstream in the transport direction as a component of the force F transmitted from the deceleration portion 3a of the speed reducing device 3.
  • a component force F1 in the direction of the inclined surface and a component force F2 in the direction perpendicular to the contact inclined surface 7c are generated.
  • the vertical component force F2 is a component force toward the upstream side in the transport direction. Therefore, the third pallet 7C is decelerated by the vertical component force F2, which is the component force of the force F transmitted from the deceleration unit 3a.
  • the third pallet 7C pushes down the deceleration portion 3a by the contact inclined surface 7c as it is transported to the downstream side in the transport direction.
  • the force F transmitted from the deceleration unit 3a increases as the pallet is conveyed to the downstream side in the conveying direction.
  • the inclined surface direction component force F1 and the vertical direction component force F2 transmitted from the deceleration unit 3a increase as the pallet is conveyed to the downstream side in the transfer direction. That is, the third pallet 7C is decelerated at a deceleration rate that increases at a constant rate as it is transported to the downstream side in the transport direction.
  • the deceleration portion 3a of the speed reducing device 3 comes into contact with the contact inclined surface 7c while being transported to the downstream side in the transport direction, so that a vertical component force F2 toward the upstream side in the transport direction is generated. ..
  • the third pallet 7C is decelerated by the vertical component force F2 toward the upstream side in the transport direction while the deceleration portion 3a is in contact with the contact inclined surface 7c and is moving on the contact inclined surface 7c.
  • the third pallet 7C is decelerated at a deceleration rate that increases at a constant rate as it is transported to the downstream side in the transport direction.
  • the rollers constituting the deceleration unit 3a come into contact with the contact inclined surface 7c of the pallet 7 while rotating. That is, the third pallet 7C does not generate a deceleration force due to sliding friction when the contact portion 7b comes into contact with the third pallet 7C.
  • the pallet transfer system 1 can decelerate one pallet 7 without disturbing the arrangement of the plurality of pallets 7 even if the plurality of pallets 7 are conveyed side by side without gaps.
  • the vertical component force F2 which is a component force in the direction away from the conveyor surface 2a of the conveyor 2, is transmitted from the deceleration unit 3a of the speed reducer 3.
  • the vertical component force F2 transmitted from the deceleration unit 3a increases as the pallet is conveyed downstream in the conveying direction. While the deceleration portion 3a is in contact with the third pallet 7C, the roller of the pallet holding portion 6 is in contact with the upper surface of the third pallet 7C. That is, even if the vertical component force F2 transmitted from the deceleration unit 3a increases, the third pallet 7C is lifted from the transport surface 2a of the conveyor 2 by the pallet holding unit 6 to prevent the posture from being disturbed. Therefore, in the third pallet 7C, the vertical component force F2 is not dispersed due to the floating of the third pallet 7C.
  • the third pallet 7C pushes down the deceleration portion 3a of the speed reducer 3 to the lower limit position in a state where it does not protrude from the transport surface 2a of the conveyor 2 by the contact inclined surface 7c of the contact portion 7b by transporting to the downstream side in the transport direction. ..
  • the third pallet 7C pushes the deceleration portion 3a down to the lower limit position by the bottom surface of the pallet main body portion 7a provided at the upstream end of the contact inclined surface 7c in the transport direction.
  • the third pallet 7C is further conveyed to the downstream side in the conveying direction in a state where the deceleration portion 3a is pushed down to the lower limit position by the bottom surface of the pallet main body portion 7a.
  • the deceleration portion 3a is inserted into the insertion portion 7e provided at the rear end portion of the pallet body portion 7a in the transport direction. ..
  • the deceleration unit 3a of the deceleration device 3 inserted into the insertion unit 7e of the third pallet 7C is located on the downstream side of the contact portion 7b of the fourth pallet 7D in the transport direction. Therefore, the contact portion 7b of the fourth pallet 7D comes into contact with the deceleration portion 3a when it is transported to the downstream side in the transport direction.
  • the insertion portion 7e is provided at the rear end portion of the third pallet 7C in the transport direction. Therefore, the insertion portion 7e of the third pallet 7C into which the deceleration portion 3a can be inserted is located on the downstream side of the contact portion 7b of the fourth pallet 7D to be located in the transport direction.
  • FIG. 10 shows a schematic configuration of the pallet 9 of the pallet transfer system 1A according to the second embodiment.
  • the pallet 9 has a protruding portion 9d at the front end portion of the pallet main body portion 9a in the transport direction.
  • the configuration of the pallet transfer system 1A is the same as the configuration of the pallet transfer system 1A of the first embodiment except for the pallet 9. Therefore, in the following, the description of the same configuration as that of the first embodiment will be omitted, and only the configuration of the pallet 9 will be described.
  • a contact portion 9b that comes into contact with the speed reducing device 3 is provided at the front end portion of the pallet body portion 9a in the transport direction.
  • the contact inclined surface 9c is an inclined surface that inclines in a direction away from the speed reducing device 3 toward the downstream side in the transport direction.
  • the protruding portion 9d of the pallet 9 separates the adjacent pallet 9 from the pallet main body portion 9a.
  • the protruding portion 9d protrudes from the front end portion of the pallet main body portion 9a in the transport direction toward the downstream side in the transport direction. That is, the protruding portion 9d protrudes from the front end portion of the contact portion 9b in the transport direction toward the downstream side in the transport direction.
  • the protruding portion 9d comes into contact with the rear end portion of the other pallet 9 adjacent to the downstream side in the transport direction of the pallet 9.
  • the protruding portion 9d separates another pallet 9 adjacent to the downstream side in the transport direction of the pallet 9 from the contact portion 9b of the pallet 9.
  • an insertion portion 9e having a gap into which the deceleration portion 3a of the deceleration device 3 can be inserted is configured at the front end portion of the pallet 9 in the transport direction.
  • the insertion portion 9e is composed of a contact portion 9b and a protrusion portion 9d.
  • the pallet 9 configured in this way has a contact inclined surface 9c which is a part of the contact portion 9b at the front end portion of the pallet main body portion 9a in the transport direction. Further, the pallet 9 has a protruding portion 9d which is a part of the inserting portion 9e at the front end portion of the contact portion 9b in the transport direction.
  • the protruding portion 9d provided at the front end of the pallet 9 in the transport direction is the other on the downstream side of the pallet 9 in the transport direction. It comes into contact with the pallet body 9a of the pallet 9.
  • the rear end portion of the pallet 9 in the transport direction is on the protruding portion 9d of the other pallet 9 on the upstream side of the pallet 9 in the transport direction.
  • the insertion portion 9e is located on the downstream side of the contact portion 9b in the transport direction.
  • the deceleration portion 3a of the deceleration device 3 is inserted into the insertion portion 9e of the pallet 9 from below the conveyor 2 by the urging force of the urging portion 3b. That is, the deceleration unit 3a is located on the downstream side of the contact portion 9b of the pallet 9 in the transport direction.
  • the pallet 9 is provided with the insertion portion 9e at the front end portion of the contact portion 9b in the transport direction, so that even if the other pallets 9 are continuously located on the downstream side in the transport direction, the transport direction of the contact portion 9b
  • FIG. 11 shows a schematic configuration of the pallet 10 of the pallet transfer system 1B according to the third embodiment.
  • the pallet 10 has protrusions at the front end portion in the transport direction and the rear end portion in the transport direction of the pallet body portion 10a.
  • the pallet 10 has a pallet main body portion 10a, a contact portion 10b, a front protruding portion 10d, and a rear protruding portion 10f.
  • the front protruding portion 10d separates the other pallets 10 that are continuously located on the downstream side of the pallet 10 in the transport direction from the pallet main body portion 10a.
  • the front projecting portion 10d projects from the front end portion of the pallet body portion 10a in the transport direction toward the downstream side in the transport direction. That is, the front protruding portion 10d protrudes from the front end portion of the contact portion 10b of the pallet 10 toward the downstream side in the transport direction.
  • the front protruding portion 10d comes into contact with the rear end portion of the other pallet 10 adjacent to the downstream side in the transport direction of the pallet 10.
  • the front protruding portion 10d separates another pallet 10 adjacent to the downstream side in the transport direction of the pallet 10 from the contact portion 10b of the pallet 10.
  • a gap is created between the contact portion 10b of the pallet 10 and the other pallet 10 adjacent to the downstream side in the transport direction. That is, a front insertion portion 10e having a gap into which the deceleration portion 3a of the deceleration device 3 can be inserted is configured at the front end portion of the pallet 10 in the transport direction.
  • the front insertion portion 10e is composed of a contact portion 10b and a front protrusion portion 10d.
  • the rear protruding portion 10f separates another pallet 10 located continuously on the upstream side of the pallet 10 in the transport direction from the pallet main body portion 10a.
  • the rear protruding portion 10f protrudes from the rear end portion of the pallet main body portion 10a in the transport direction toward the upstream side in the transport direction.
  • the rear protruding portion 10f comes into contact with the rear end portion in the transport direction of another pallet 10 located continuously on the upstream side of the pallet 10 in the transport direction.
  • the rear protruding portion 10f separates the other pallet 10 adjacent to the upstream side of the pallet 10 in the transport direction from the pallet main body portion 10a. As a result, a gap is created between the pallet main body 10a and the other pallets 10 adjacent to the upstream side in the transport direction.
  • a rear insertion portion 10g having a gap into which the deceleration portion 3a of the speed reduction device 3 can be inserted is configured.
  • the rear insertion portion 10g is composed of a pallet body portion 10a and a rear protrusion portion 10f.
  • the pallet 10 configured in this way has a front protruding portion 10d which is a part of the front insertion portion 10e at the front end portion of the contact portion 10b in the transport direction. Further, the pallet 10 has a rear protruding portion 10f which is a part of the rear insertion portion 10g at the rear end portion of the pallet main body portion 10a in the transport direction.
  • the front protruding portion 10d provided at the front end portion of the pallet 10 in the transport direction is the other pallet on the downstream side of the pallet 10 in the transport direction. It comes into contact with the rear protrusion 10f of 10.
  • the pallet 10 is configured with the front insertion portion 10e from the front protrusion 10d provided at the front end of the contact portion 10b in the transport direction and the rear protrusion 10f of the other pallets 10. Further, the pallet 10 is configured with a rear insertion portion 10g from a rear protrusion 10f provided at the rear end of the pallet body 10a in the transport direction and a front protrusion 10d of another pallet 10.
  • the deceleration portion 3a of the deceleration device 3 is inserted into the front insertion portion 10e of the pallet 10 from below the conveyor 2 by the urging force of the urging portion 3b. That is, the deceleration unit 3a is located on the downstream side of the contact portion 10b of the pallet 10 in the transport direction.
  • the pallet 10 is provided with the front insertion portion 10e at the front end portion of the contact portion 10b in the transport direction, so that the contact portion 10b can be transported even if the other pallets 10 are continuously located on the downstream side in the transport direction.
  • a space for arranging the deceleration unit 3a of the deceleration device 3 is provided on the downstream side in the direction.
  • the pallet transfer systems 1 and 1A include the pallets 7 and 9 having the mounting table Mb on which the conveyed object M can be placed, the conveyor 2 having the conveying surface 2a for conveying the pallets 7 and 9, and the pallet 7.
  • a deceleration unit 3a that comes into contact with the deceleration unit 9 and an urging unit 3b that urges the deceleration unit 3a toward the pallets 7 and 9 are provided.
  • the plurality of pallets 7 and 9 have contact portions 7b and 9b that come into contact with the deceleration portion 3a of the deceleration device 3, protrusions 7d and 9d, and insertion portions 7e and 9e into which the deceleration portion 3a is inserted.
  • the protruding portion 7d is located at the front end portion of the contact portion 7b in the transport direction.
  • the protruding portion 9d is located at the rear end portion of the pallet main body portion 9a in the transport direction.
  • the insertion portion 9e of the pallet 10 is from a protruding portion 9d protruding from the front end portion in the transport direction of the contact portion 10b toward the downstream side in the transport direction, or from the rear end portion in the transport direction of the pallet body portion 10a including the mounting table Mb. It has at least one protruding portion 9d of the protruding portion 9d that protrudes toward the upstream side in the transport direction.
  • the deceleration portion 3a of the speed reducer 3 can be arranged on the downstream side of the contact portion 7b in the transport direction. Further, the pallet 7 having the insertion portion 7e at the front end portion in the transport direction of the contact portion 7b, the pallet 9 having the insertion portion 9e at the rear end portion in the transport direction of the pallet body portion 9a, and the front insertion portion 10e at the front end portion in the transport direction.
  • the deceleration portion 3a is located downstream of the contact portions 7b, 9b and 10b in the transport direction even if other pallets are lined up without a gap in the transport direction. Can be placed.
  • the contact portions 7b, 9b and 10b are moved in the transport direction by the conveyor 2, they come into contact with the deceleration portions 3a inserted into the insertion portions 7e, 9e and 10e.
  • the pallets 7, 9, and 10 sandwiched between the front and rear pallets can be decelerated by the deceleration unit 3a.
  • the pallet 7 has a protruding portion 7d at the front end portion of the contact portion 7b in the transport direction, so that a space for inserting the deceleration portion 3a of the speed reduction device 3 is provided on the downstream side of the contact portion 7b in the transport direction. ..
  • the pallet 9 has a protruding portion 9d at the rear end portion in the transport direction of the pallet main body portion 9a including the mounting table Mb, so that the pallet 9 is downstream of the contact portion 9b in the other pallet 9 on the upstream side of the pallet 9 in the transport direction. It has a space on the side for inserting the deceleration unit 3a. As a result, the pallets 7 and 9 sandwiched between the front and rear pallets can be decelerated.
  • the pallet transfer systems 1, 1A and 1B may be provided with speed reducing devices 3 on both sides of the conveyor 2 in the width direction.
  • FIG. 12 is a schematic plan view showing another embodiment of the pallet in the pallet transfer system 1, 1A, 1B according to the present invention.
  • the pallet transfer systems 1, 1A and 1B include, for example, a left speed reduction device 3A and a right speed reduction device 3B.
  • the decelerating portions 3Aa and 3Ba of the left and right decelerating devices 3A and 3B are located so as to be movable in the width direction of the conveyor 2.
  • the pallet 11 is provided with a left contact portion 11Ab and a right contact portion 11Bb on both the left and right sides in a plan view of the pallet main body portion 11a.
  • the protruding portion 11d separates the pallet connected from the pallet main body portion 11a.
  • the protruding portion 11d protrudes from the front end portion of the pallet main body portion 11a in the transport direction toward the downstream side in the transport direction.
  • the protruding portion 11d protrudes with a width narrower than the width of the pallet main body portion 11a in the left-right direction.
  • a left contact portion 11Ab that comes into contact with the left speed reducing device 3A is provided at the left end portion of the pallet body portion 11a in the transport direction.
  • a right contact portion 11Bb that comes into contact with the right speed reducing device 3B is provided at the front end portion in the transport direction of the pallet body portion 11a in the right direction.
  • the left contact inclined surface 11Ac of the left contact portion 11Ab is an inclined surface that inclines in a direction away from the left speed reducing device 3A toward the downstream side in the transport direction.
  • the right contact inclined surface 11Bc of the right contact portion 11Bb is an inclined surface that inclines in a direction away from the right speed reducing device 3B toward the downstream side in the transport direction.
  • the left contact portion 11Ab protrudes to the left from the left end portion of the protruding portion 11d.
  • the right contact portion 11Bb protrudes to the right from the right end portion of the protruding portion 11d.
  • a left insertion portion 11Ae into which the left deceleration portion 3Aa of the left deceleration device 3A can be inserted is configured on the downstream side of the left contact portion 11Ab in the transport direction and on the left side of the left end of the protrusion 11d.
  • a right insertion portion 11Be into which the right deceleration portion 3Ba of the right deceleration device 3B can be inserted is configured.
  • FIG. 13 shows a schematic configuration of the pallet transfer system 1C according to the fourth embodiment.
  • the pallet 12 of the pallet transfer system 1C has a contact portion wheel 12c at the contact portion 12b.
  • the speed reducing device 13 of the pallet transfer system 1C has a speed reducing portion inclined surface 13c.
  • a contact portion 12b that comes into contact with the speed reducing device 13 is provided at the front end portion of the pallet body 12a of the pallet 12 in the transport direction.
  • the contact portion 12b has a contact portion wheel 12c.
  • the contact portion wheel 12c is provided at the front end portion of the pallet body portion 12a in the transport direction.
  • the contact wheel 12c is configured to be rotatable in the transport direction.
  • the deceleration unit 13a of the deceleration device 13 is a member having a deceleration unit inclined surface 13c.
  • the deceleration unit 13a is located below the conveyor 2 with the deceleration unit inclined surface 13c facing upward and upstream in the transport direction.
  • the deceleration unit 13a is configured to be movable in a direction perpendicular to the transport direction of the pallet 12.
  • the deceleration unit 13a is configured to be movable in a direction perpendicular to the transport direction of the pallet 12 and in a direction perpendicular to the transport surface 2a of the conveyor 2.
  • the deceleration portion inclined surface 13c of the deceleration portion 13a is an inclined surface that inclines toward the pallet 12 toward the downstream side in the transport direction of the conveyor 2.
  • the contact portion wheel 12c of the pallet 12 comes into contact with the deceleration portion inclined surface 13c of the deceleration portion 13a.
  • the deceleration unit 13a pushes the contact portion wheel 12c of the contact portion 12b vertically and upward in the transport direction.
  • the contact portion wheel 12c of the contact portion 12b is parallel to the deceleration portion inclined surface 13c of the deceleration portion 13a and in the inclined surface direction toward the upstream side in the transport direction as a component of the force transmitted from the deceleration portion 13a of the deceleration device 3.
  • a reaction force and a vertical component force in the direction perpendicular to the deceleration portion inclined surface 13c are generated.
  • the pallet 12 is decelerated by the reaction force in the inclined surface direction transmitted from the decelerating portion 13a and the vertical component force in the direction perpendicular to the decelerating portion inclined surface 13c.
  • the pallet transfer system 1C configured as described above has a contact portion wheel 12c at the contact portion 12b of the pallet 12. Since the contact portion wheel 12c comes into contact with the deceleration portion 13a of the deceleration device 13 while rotating, a large deceleration force due to friction does not occur when the deceleration portion 13a comes into contact with the contact portion 12b. As a result, even if the plurality of pallets 12 are conveyed side by side without gaps, the pallets 12 sandwiched between the front and rear pallets can be decelerated without disturbing the arrangement of the plurality of pallets 12.
  • FIG. 14 shows a side view of the pallet transfer system 1D according to the fifth embodiment.
  • the pallet 14 has an acceleration inclined surface 14e at the rear end of the pallet body 14a in the transport direction.
  • a contact portion 14b that comes into contact with the speed reducing device 3 is provided at the front end portion of the pallet body portion 14a in the transport direction.
  • the contact inclined surface 14c is an inclined surface that inclines in a direction away from the speed reducing device 3 toward the downstream side in the transport direction.
  • the protruding portion 14d separates the pallet 14 adjacent to the pallet main body portion 14a.
  • the protruding portion 14d protrudes from the rear end portion of the pallet main body portion 14a in the transport direction toward the upstream side in the transport direction.
  • the protruding portion 14d comes into contact with the rear end portion of the pallet 14 in the transport direction of another pallet adjacent to the upstream side in the transport direction.
  • the protruding portion 14d is provided with an acceleration inclined surface 14e that comes into contact with the speed reducing device 3.
  • the acceleration inclined surface 14e is an inclined surface that inclines in a direction away from the speed reducing device 3 toward the upstream side in the transport direction. That is, the rear end portion of the pallet main body portion 14a in the transport direction is provided with an acceleration inclined surface 14e that goes upward from the lower surface of the pallet main body portion 14a toward the upstream side in the transport direction.
  • the pallet 14 configured in this way pushes the deceleration portion 3a down to the lower limit position by the contact inclined surface 14c of the contact portion 14b. Further, the pallet 14 pushes the deceleration portion 3a down to the lower limit position by the bottom surface of the pallet main body portion 14a provided at the upstream end of the contact inclined surface 14c in the transport direction.
  • the pallet 14 is conveyed to the downstream side in the conveying direction with the deceleration portion 3a pushed down to the lower limit position by the bottom surface of the pallet main body portion 14a.
  • the acceleration inclined surface 14e of the pallet 14 is further conveyed to the downstream side in the conveying direction, the acceleration inclined surface 14e comes into contact with the deceleration portion 3a.
  • the deceleration unit 3a pushes the contact inclined surface 14c of the contact portion 14b vertically and upward in the transport direction.
  • a reaction force and a vertical component force in the direction perpendicular to the acceleration inclined surface 14e are generated.
  • the pallet 14 is accelerated by the reaction force in the inclined surface direction and the component force in the vertical direction transmitted from the deceleration unit 3a.
  • the amount of pushing down of the deceleration portion 3a by the acceleration inclined surface 14e decreases as the pallet 14 is transported to the downstream side in the transport direction.
  • the force transmitted from the deceleration unit 3a decreases as the pallet 14 is transported to the downstream side in the transport direction.
  • the reaction force in the inclined surface direction and the component force in the vertical direction transmitted from the deceleration unit 3a decrease as the pallet 14 is transported to the downstream side in the transport direction. That is, the pallet 14 is accelerated at an acceleration that decreases at a constant rate as it is transported to the downstream side in the transport direction.
  • the pallet 14 is conveyed to the downstream side in the transport direction, and the deceleration portion 3a of the speed reducer 3 comes into contact with the acceleration inclined surface 14e, so that the reaction force in the inclined surface direction toward the downstream side in the transport direction is perpendicular to the pallet 14.
  • a component force is generated.
  • the pallet 14 is accelerated by the reaction force in the inclined surface direction and the component force in the vertical direction toward the downstream side in the transport direction while the deceleration portion 3a is in contact with the accelerating inclined surface 14e and is moving on the accelerating inclined surface 14e.
  • the pallet 14 is accelerated at an acceleration that decreases at a constant rate as it is transported to the downstream side in the transport direction.
  • the accelerated pallet 14 is separated from the pallet 14 on the upstream side of the pallet 14. As a result, the upstream pallet 14 can be decelerated without being affected by the downstream pallet 14.
  • the present invention has a mounting table on which a transported object can be placed, and is applicable to a pallet and a pallet transport system transported by a conveyor.

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  • Special Conveying (AREA)
  • Control Of Conveyors (AREA)
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5532374U (https=) * 1978-08-24 1980-03-01
JPS5747090B2 (https=) * 1977-11-17 1982-10-07
JPH0340813Y2 (https=) * 1987-03-30 1991-08-28
JP6206239B2 (ja) * 2014-02-18 2017-10-04 株式会社メイキコウ パレット搬送装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6369368B2 (ja) * 2015-03-27 2018-08-08 株式会社ダイフク 搬送設備および搬送方法
CN110540027B (zh) * 2019-08-23 2024-06-11 浙江优智物联科技有限公司 一种智能输送系统及方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5747090B2 (https=) * 1977-11-17 1982-10-07
JPS5532374U (https=) * 1978-08-24 1980-03-01
JPH0340813Y2 (https=) * 1987-03-30 1991-08-28
JP6206239B2 (ja) * 2014-02-18 2017-10-04 株式会社メイキコウ パレット搬送装置

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