WO2011083783A1 - アキュムレーションコンベヤ - Google Patents
アキュムレーションコンベヤ Download PDFInfo
- Publication number
- WO2011083783A1 WO2011083783A1 PCT/JP2011/050013 JP2011050013W WO2011083783A1 WO 2011083783 A1 WO2011083783 A1 WO 2011083783A1 JP 2011050013 W JP2011050013 W JP 2011050013W WO 2011083783 A1 WO2011083783 A1 WO 2011083783A1
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- WIPO (PCT)
- Prior art keywords
- zone
- distance
- conveyed
- accumulation conveyor
- downstream
- Prior art date
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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
- B65G13/00—Roller-ways
- B65G13/02—Roller-ways having driven rollers
-
- 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
- B65G23/00—Driving gear for endless conveyors; Belt- or chain-tensioning arrangements
- B65G23/22—Arrangements or mountings of driving motors
-
- 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
- B65G37/00—Combinations of mechanical conveyors of the same kind, or of different kinds, of interest apart from their application in particular machines or use in particular manufacturing processes
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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
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/08—Control devices operated by article or material being fed, conveyed or discharged
-
- 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
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/10—Sequence control of conveyors operating in combination
-
- 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
- B65G47/22—Devices influencing the relative position or the attitude of articles during transit by conveyors
- B65G47/26—Devices influencing the relative position or the attitude of articles during transit by conveyors arranging the articles, e.g. varying spacing between individual articles
- B65G47/261—Accumulating articles
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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
- B65G47/22—Devices influencing the relative position or the attitude of articles during transit by conveyors
- B65G47/26—Devices influencing the relative position or the attitude of articles during transit by conveyors arranging the articles, e.g. varying spacing between individual articles
- B65G47/30—Devices influencing the relative position or the attitude of articles during transit by conveyors arranging the articles, e.g. varying spacing between individual articles during transit by a series of conveyors
- B65G47/31—Devices influencing the relative position or the attitude of articles during transit by conveyors arranging the articles, e.g. varying spacing between individual articles during transit by a series of conveyors by varying the relative speeds of the conveyors forming the series
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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
- B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
- B65G2201/02—Articles
-
- 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
- B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
- B65G2203/02—Control or detection
- B65G2203/0208—Control or detection relating to the transported articles
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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
- B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
- B65G2203/04—Detection means
- B65G2203/042—Sensors
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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
- B65G2811/00—Indexing codes relating to common features for more than one conveyor kind or type
- B65G2811/06—Devices controlling the relative position of articles
- B65G2811/0631—Devices controlling the relative position of articles by varying the spacing between individual articles
-
- 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
- B65G2811/00—Indexing codes relating to common features for more than one conveyor kind or type
- B65G2811/09—Driving means for the conveyors
- B65G2811/095—Speed variation control means
- B65G2811/096—Speed variation control means without reversal of the conveying direction
Definitions
- the present invention relates to an accumulation conveyor.
- Patent Document 1 an accumulation conveyor that can convey or stop an article on a roller by rotating or stopping a large number of rollers provided along the article conveyance direction is known (for example, Patent Document 1 below).
- the accumulation conveyor is arranged by connecting multiple conveyors.
- One conveyor is divided into multiple zones, and each zone is equipped with a sensor that detects cases such as cases and a motor (or a roller with a built-in motor) that drives the conveyor (roller) in the zone. Is done.
- the rollers and motors in each zone rotate substantially synchronously by being wound around an endless belt.
- a sensor in the zone detects that the material flowing from the upstream has entered a certain zone, there is no material in the downstream zone, or the material in the downstream zone starts. From the situation, for example, it is determined whether or not the conveyed product is allowed to flow downstream, and the motor is started or stopped. As a result, only one conveyed product is placed in one zone during the stay.
- the conventional accumulation conveyor controls the stay of the transported object in units of zones, and only one transported object can be placed in one zone, one sensor for each transported object, one unit
- the motor or the roller with a built-in motor
- the sensor or the control means for controlling the motor are required, and when considered in units of conveyed objects, the conveyor becomes a high cost.
- an object of the present invention is to provide an accumulation conveyor that can solve the above-described problems and reduce the distance between conveyed objects with a simple configuration to improve the accumulation efficiency and the conveyance efficiency.
- the accumulation conveyor controls the rotation of a plurality of carrier rollers (18) arranged in parallel to each other to form a transport path for each of a plurality of zones (Z).
- a driving means (20) is provided for each zone (Z) and rotationally drives the carrier roller (18) constituting the zone (Z).
- detection means (22) provided for each zone (Z) and detecting the passage of the transported object (C) and the subsequent transported object (C) approaching the preceding transported object (C).
- control means (26) for each zone (Z) it is preferable to provide a control means (26) for each zone (Z).
- the control means (26) in each zone (Zn) is provided in each of the zone (Zn), the zone adjacent to the upstream (Zn-1) and the zone adjacent to the downstream (Zn + 1).
- the driving means (20n) in the zone (Zn) may be controlled.
- the control means in each zone (Zn) is based on the detection information from the detection means (22n, 22n + 1) provided in each of the zone (Zn) and the downstream zone (Zn + 1).
- Zn) is estimated distance information on the distance between the transported object (C) on the Zn) and the transported object (C) on the zone (Zn + 1) adjacent downstream thereof, and the estimated distance information is within a predetermined range.
- the zone (Zn) drive means (20n) can be controlled to increase the transport speed of the zone (Zn).
- control means in each zone (Zn) may use detection information from detection means (22n, 22n-1) provided in the zone (Zn) and a zone (Zn-1) adjacent to the upstream zone (Zn). Based on the estimated distance, the distance information on the distance between the transported object (C) on the zone (Zn) and the transported object (C) on the upstream zone (Zn-1) is estimated. When the information is within a predetermined range, the driving means (20n) for the zone (Zn) may be controlled to slow down the transport speed of the zone (Zn).
- control means (Zn) there is only one control means (Zn), and it is connected to the drive means (20) and the detection means (22) in each zone (Z) via a network circuit, whereby the drive means in each zone (Z). (20) and the detection means (22) can be controlled in the same manner as described above.
- the transport speed of the upstream transport object becomes relatively faster than the transport speed of the downstream transport object, so that the upstream transport object can be brought close to the downstream transport object.
- the distance between the transported objects can be suitably reduced.
- it becomes possible to place a plurality of transported objects in one zone so that the staying amount of the transported objects per certain length (for example, one zone) can be increased.
- accumulation efficiency is improved.
- a plurality of transported objects can be packed together and transported as a whole, the transport amount per fixed length can be increased, and transport efficiency is improved.
- the distance (gap) between conveyed items can be made extremely small, even when there is a high-speed sorter on the downstream side of the accumulation conveyor, multiple conveyed items staying on the conveyor are discharged to the sorter at high speed. This makes it possible to minimize the payout time by the sorter.
- there is no concept of retaining one transported object in one zone like a conventional accumulation conveyor it becomes possible to freely set the length of one zone without depending on the size of the transported object, For example, by increasing the length of one zone, it is possible to reduce the number of motors, sensors, and control means of the entire conveyor, and as a result, the cost can be reduced.
- the accumulation conveyor According to the accumulation conveyor according to the present invention, it is possible to improve the accumulation efficiency and the conveyance efficiency by suitably reducing the distance between the conveyed objects with a simple configuration.
- the accumulation conveyor 10 includes a pair of conveyor frames 12 arranged in parallel in the horizontal direction (only one is shown in FIG. 1, the other is arranged on the back side), and lower portions of both conveyor frames 12. It is comprised by the support member 14 connected between, the leg member 16 etc. which were connected between the lower part of both the conveyor frames 12, and the several places in the length direction of the conveyor frame 12.
- FIG. 1 the accumulation conveyor 10 includes a pair of conveyor frames 12 arranged in parallel in the horizontal direction (only one is shown in FIG. 1, the other is arranged on the back side), and lower portions of both conveyor frames 12. It is comprised by the support member 14 connected between, the leg member 16 etc. which were connected between the lower part of both the conveyor frames 12, and the several places in the length direction of the conveyor frame 12.
- FIG. 1 the accumulation conveyor 10 includes a pair of conveyor frames 12 arranged in parallel in the horizontal direction (only one is shown in FIG. 1, the other is arranged on the back side), and lower portions of both conveyor frames 12. It is comprised by the support member 14 connected between, the leg member
- a large number of carrier rollers (hereinafter referred to as “rollers”) 18 are rotatably provided between the conveyor frames 12 along the length direction thereof. These rollers 18 form a conveyance path.
- the conveyance path is divided into a plurality of zones Z (five zones in FIG. 1) in the conveyance direction. The length of each zone Z is appropriately determined in consideration of the maximum and minimum lengths of the conveyed product to be handled.
- a motor (driving means) 20 attached to the support frame 14 is provided for each zone Z.
- the rotating shaft of the motor 20 is connected to, for example, two drive rollers 18a adjacent to the motor 20 via an endless belt.
- the other roller 18 is connected by an endless belt for each pair of adjacent rollers, and the roller 18 adjacent to the driving roller 18a is also connected by an endless belt. That is, in each zone Z, when the motor 20 is driven, all the rollers 18 are rotationally driven in conjunction with each other, and the conveyed product moves on the conveying path.
- the motor 20 is preferably a responsive brushless DC motor, for example, but other types of motors that are less responsive than brushless DC motors may be used.
- the accumulation conveyor 10 is a belt in which an endless belt is attached to each entire zone Z in order to prevent the conveyed product from slipping on the roller 18, being pinched between the rollers 18, or falling. It is a conveyor type.
- the belt is preferably composed of a material having high friction and elasticity such as urethane and rubber. From the viewpoint of cost and handling, a belt having no core is effective.
- Each zone Z is provided with a sensor (detection means) 22 to detect the passage of the conveyed product.
- the sensor 22 is preferably a photoelectric type, but may be other types.
- the position of the sensor 22 is preferably close to the downstream side of the zone Z. More specifically, when the conveyed product passes the sensor 20, at least a part of the conveyed product is placed on the conveyor of the downstream zone. The distance from the downstream end of the zone is preferably about half of the smallest transported object.
- a sensor 22 a is further provided at the upstream end of the accumulation conveyor 10, and the sensor 22 a detects the passage of the conveyed product sent from the upstream conveyor 24, so that the conveyed product is transferred to the accumulation conveyor 10. It is possible to detect that the vehicle has entered.
- each zone Z is provided with a controller (control means) 26 for driving and controlling the motor 20 in the zone Z.
- the controller 26 is configured to be able to control the motor 20 such as forward / reverse driving, acceleration / deceleration driving, and speed adjustment. Further, the controller 26 controls the motor 20 of the zone Z based on the sensor information acquired from the sensor 22 and the information such as the motor driving state of the adjacent zone Z acquired from the upstream and downstream controllers 26. .
- the controller 26 provided in each zone Z is connected so as to be communicable with the controller 26 of the adjacent zone Z, so that, for example, information can be transmitted and received between the upstream zone and the downstream zone. It is possible.
- a suffix is appropriately added to the symbol Z, etc., and this suffix represents the position of the zone when the most upstream side is “1”. is there. That is, the upstream zone adjacent to the arbitrary zone Zn is represented as Zn-1, and is hereinafter represented as Zn-2, Zn-3,. Further, the downstream zone adjacent to the zone Zn is represented as Zn + 1, and hereinafter represented as Zn + 2, Zn + 3. Further, the suffix n is added to the reference numerals of components included in an arbitrary zone Zn. In the following description, when no subscript is added, all zones (Z1, Z2,..., Zn-1, Zn, Zn + 1...) Are indicated.
- the controller 26 is provided in each zone Z. More specifically, the controller 26 includes a central processing unit CPU (Central Processing Unit) and a main memory RAM (Random Access Memory). ) And ROM (Read Only Memory), information from the zone Z sensor 22 and the adjacent upstream and downstream controllers 26, and control command signals to the zone Z motor 20 drive and adjacent upstream and downstream
- the controller 26 is configured as a computer having an input / output device (I / O) or the like that issues information from the controller 26.
- the controller 26 can be considered to be functionally composed of a distance estimation unit, a stock detection unit, and a control input switching unit. These functional units read predetermined computer software on hardware such as a CPU and RAM so that the CPU operates the input / output device and reads and writes data in the RAM, ROM, and auxiliary storage device. This is realized by performing calculation processing.
- the distance estimation unit estimates information related to the distance between the two adjacent transport objects based on the passage timings of the two adjacent transport objects detected by the sensor 22. Specifically, in the case of the distance estimation unit of the controller 26n in the zone Zn shown in FIG. 2, the timing (time, counter value, etc.) at which the conveyed object detected by the sensor 22n passes from the sensor 22n in the own zone Zn. Sensor information (detection information) is acquired, and the distance between transported objects is calculated based on this information. And a distance estimation part transmits the distance information regarding the calculated distance between conveyed products to the control input switching part in the controller 26n. In addition, the distance estimation unit transmits information detected by the sensor 22n to the presence detection unit of the controller 26n + 1 in the downstream zone Zn + 1.
- the arrival detection unit detects whether or not a conveyed item is in the zone Zn. Specifically, in the case of the presence detection unit of the controller 26n in the zone Zn shown in FIG. 2, the sensor 22n-1 in the zone Zn-1 adjacent to the upstream side passes through the controller 26n-1 in the upstream zone Zn-1. When the sensor information indicating the timing (time, counter value, etc.) when the transported object detected by the sensor 22n-1 passes is acquired, the transported object is moved to the own zone Zn after a predetermined time has elapsed, and the own zone exists. Judge that it is a load. Further, once it is determined that the vehicle is in stock, for example, it is determined that the vehicle is in stock until a predetermined time corresponding to the operating state of the motor 20n in the own zone Zn has elapsed.
- the stock detection unit transmits “stock information” indicating whether or not a transported product is present in the zone Zn to the control input switching unit. "To the upstream controller 26n-1 and to the downstream controller 26n + 1 as” upstream inventory information ".
- the control input switching unit switches a control command (control input) to be output to the motor 20n in its own zone Zn.
- control input control input
- the control input switching unit of the controller 26n in the zone Zn shown in FIG. 2 distance information by the distance estimation unit, presence information by the presence detection unit, and reception from the controller 26n-1 in the upstream zone Zn-1.
- the control command to be output to the motor 20n in the own zone Zn is switched based on the upstream inventory information and the downstream inventory information / downstream operation information received from the controller 26n + 1 in the downstream zone Zn + 1.
- the control input switching unit switches the control command in three stages of “stop”, “normal speed operation”, and “high speed operation”.
- control input switching unit transmits information on a control command output to the motor 20n in the own zone Zn to the upstream controller 26n-1 as “downstream operation information”.
- FIG. 3 is a flowchart showing processing executed by the CPU of the controller 26n in the zone Zn.
- Each controller 26 of the accumulation conveyor 10 starts this flow when the sensor 22a provided in the uppermost stream of the accumulation conveyor 10 shown in FIG. Further, the control command for each motor 20 is “stop” in the initial state. That is, at the start of the flow, the operation is stopped throughout the accumulation conveyor 10.
- step S101 With reference to the inventory information obtained by the CPU (in other words, inventory information by the inventory detector), it is confirmed whether or not there is an article in the zone Zn (S101). .
- the conveyed product is not in the own zone Zn, it transfers to step S102. If it is in stock, the process proceeds to step S105.
- step S101 when it is confirmed that there is a conveyed product in its own zone Zn, it is determined whether or not the conveyed product is present in the downstream zone Zn + 1 by referring to the downstream inventory information received from the downstream controller 26n + 1. Confirm (S105). When a conveyed product is present in the downstream zone Zn + 1, the process proceeds to step S106. If it is not in stock, the control command to the motor 20n in its own zone Zn is maintained at “normal speed operation” (S104).
- step S105 when it is confirmed that the conveyed product is in the downstream zone Zn + 1, it is confirmed by referring to the downstream operation signal received from the downstream controller 26n + 1 whether or not the downstream zone Zn + 1 is stopped (S106). If the downstream zone Zn + 1 is stopped, the process proceeds to step S107. If the downstream zone Zn + 1 is not stopped (normal operation or high speed operation), the process proceeds to step S108.
- step S106 it is determined whether or not the transported goods in the own zone Zn have reached the end of the zone, that is, the most downstream of the own zone Zn. Confirmed (S107). Specifically, when the sensor 22n in the own zone Zn detects the conveyed product, it is determined that the conveyed product has reached the tip of the zone. If the conveyed product has reached the front end of the own zone, the control command to the motor 20n in the own zone Zn is set to “stop” (S103). If not, the control command to the motor 20n in the own zone Zn is set to “normal speed operation” (S104).
- step S106 When it is confirmed in step S106 that the downstream zone Zn + 1 is not stopped and is in normal operation or high-speed operation, it is further confirmed by referring to the downstream operation signal whether the downstream zone Zn + 1 is in high-speed operation. (S108).
- the control command to the motor 20n in the own zone Zn is also set to “high speed operation” (S110).
- the downstream zone Zn + 1 is not operating at high speed (that is, during normal operation)
- the process proceeds to step S109.
- step S108 When it is confirmed in step S108 that the downstream zone Zn + 1 is not operating at high speed, it is confirmed whether or not the distance between the conveyed objects is within a predetermined range based on the distance information between the two adjacent conveyed objects (S109). . Specifically, the distance information is converted into a distance GAP between transported items. Lmin is the minimum interval at which it is not necessary to accelerate the subsequent conveyance to be brought into close contact with the previous conveyance, and the maximum interval (for example, for one zone) that can be determined that even if the subsequent conveyance is accelerated, it cannot catch up with the previous conveyance. ) Is Lmax.
- the control command to the motor 20n in the own zone Zn is set to “high speed operation” (S110).
- the control command to the motor 20n in the own zone Zn is set to “normal speed operation” (S104).
- step S103, S104 or S110 after switching the control command to the motor 20n of the own zone Zn to “stop”, “normal speed operation” or “high speed operation”, for example, whether or not an operation end command is received from the outside. Based on this, it is determined whether or not to end the operation of the accumulation conveyor 10 (S111). If the operation is not finished, the process returns to step S101 again and the process is repeated. When the operation ends, the process ends.
- the accumulation conveyor 10 operates as shown in FIGS. 4 to 7 shown as examples.
- the conveyed product C1 moves to the downstream zone Zn + 1
- the conveyed product C1 is conveyed at a normal speed on the downstream zone Zn + 1.
- the controller 26n of the own zone Zn proceeds from step S101 in FIG. 3 to steps S110 through steps S105, S106, and S108, and makes the own zone Zn operate at high speed.
- the conveyed product C2 on its own zone Zn advances at a high speed and approaches the normal-speed conveyed product C1 (see FIG. 5).
- the subsequent transport object C2 proceeds at a high speed, and the transport object C2 eventually becomes the transport object C1 as shown in FIG. Approaching.
- the subsequent transported object C3 is also operated at a high speed so that the distance between the transported object C2 and the transported object C2 does not increase if the distance of the transported object C2 is within a predetermined range. It will be easily understood that the switching is performed (steps S106, S108, S109, S110).
- the conveying speed of the conveyed object C2 is returned to the normal speed, and the conveyed object C1 and the conveyed object C2 are kept in close contact with each other at the normal speed. It is conveyed (steps S108, S109, S104).
- the subsequent transported objects C3, C4, and C5 also come into close contact with the transported objects C1 and C2, but the subsequent transported object C6 exceeds the predetermined maximum distance Lmax from the transported object C5.
- a plurality of transported object groups C1 to C5 and C6 to C11 are formed in the form shown in FIG. As shown in FIG. 7, even if the leading transport group C1 to C5 and the continuous transport group C6 to C11 are separated, the leading transport group C1 to C5 is waiting at the most downstream side of the accumulation conveyor 10. If it is in a state, it will be easily understood that the continuous transport object group C6 to C11 approaches the leading transport object group C1 to C5, and these transport objects C1 to C11 are integrated.
- the controller 26 can perform the following conveyance control of a conveyed product.
- a conveyed product is present in the own zone Zn and the downstream zone Zn + 1 and the downstream zone Zn + 1 is operating at a normal speed, if the distance between the conveyed items GAP is within a predetermined range (Lmin ⁇ GAP ⁇ Lmax), The zone Zn is switched to high speed operation to reduce the distance between the conveyed items.
- the own zone Zn is also switched to the high speed operation to avoid the distance between the conveyed items being increased.
- a plurality of transported objects can be placed in one zone by minimizing the distance between the transported objects. It is possible to increase the staying amount of the conveyed product (for example, one zone), and the accumulation efficiency is improved. Furthermore, a plurality of transported objects can be packed together and transported as a whole, the transport amount per fixed length can be increased, and transport efficiency is improved. Further, in order to realize such control, it is only necessary to simply switch the control input to the motor 20n in the zone Zn, so that complicated control such as conventional speed feedback control is unnecessary, and therefore the motor 20n. There are no restrictions on the specifications of the components such as the response speed. As a result, with a simple configuration, the distance between the conveyed objects can be suitably reduced, and the accumulation efficiency and the conveyance efficiency can be improved.
- the distance between the conveyed items can be extremely reduced, even when a high speed sorter is provided on the downstream side of the accumulation conveyor 10, a plurality of conveyed items staying on the conveyor 10 are discharged to the sorter at a high speed. This makes it possible to minimize the payout time by the sorter.
- the length of one zone Z can be freely set without depending on the size of the conveyed product C. For example, by increasing the length of one zone Z, the number of motors 20, sensors 22 and controllers 26 in the entire conveyor 10 can be reduced, and as a result, the cost can be reduced.
- the hardware configuration of the controller 26 described above may include a driver for the motor 20 inside the controller 26.
- the same control as described above can be performed by a single integrated controller by a technique using a network circuit such as CANopen or Ethernet (registered trademark).
- FIG. 8 shows an example.
- a communication module (slave station) 28 provided for each zone Z is connected to the motor 20 and the sensor 22 in each zone Z. These communication modules 28 are connected to the integrated controller 30.
- the communication module (master station) 32 is connected.
- the integrated coat roller 30 is basically composed of a CPU, RAM, ROM, and input / output devices in the same manner as the controller 26 described above, and the control logic for the motor 20 and sensor 22 in each zone Z is the same. The difference is that information is received from each communication module 32, the information is arithmetically processed at one place of the integrated controller 30, and then transmitted to each communication module 32.
- FIG. 9 also uses network technology.
- This is a network layer having two layers, and there are a plurality of zones (four in the illustrated embodiment) of information signals and control signals for the integrated controller 30. It is configured to transmit / receive to / from the motor 20 and the sensor 22 in each zone Z through one communication module 34 provided for each Z. Even in such a configuration, it is possible to perform the same control as in the above embodiment in which the controller 26 is provided for each zone Z.
- the types of control inputs to be switched by the control input switching unit of the controller 26 are not only the normal mode (normal speed operation) and the high speed mode (high speed operation) as described above, but also the normal mode (normal speed operation) and the deceleration mode ( Low speed operation).
- the own zone is decelerated based on the detection information of the upstream sensor. It is also conceivable that the distance between the transported objects can be reduced more efficiently in multiple stages according to the magnitude of the distance information between the two adjacent transported objects calculated by the distance estimating unit. Note that stopping is also an option as one of the deceleration stages of the own zone.
- the motor 20 as the driving means and the carrier roller 11 are arranged separately and linked by an endless belt.
- a roller motor built-in motor
- a roller is incorporated in one of the carrier rollers. It is also possible to use a roller.
- the accumulation conveyor 10 may be a roller conveyor type that does not provide the belt 14 that is wound around the carrier roller 11 but conveys the conveyed product by the rotation driving of the carrier roller 11.
- SYMBOLS 10 ... Accumulation conveyor, 18 ... Carrier roller, 20 ... Motor (drive means), 22 ... Sensor (detection means), 26 ... Controller (control means), 28 ... Communication module (slave station), 30 ... Integrated controller, 32 ... Communication module (master station), 34 ... communication module, C ... transported object, Z ... zone.
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- Mechanical Engineering (AREA)
- Control Of Conveyors (AREA)
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Abstract
Description
(1)自ゾーンZn及び下流ゾーンZn+1に搬送物が在荷しており、下流ゾーンZn+1が通常速度運転中の場合、搬送物間距離GAPが所定範囲(Lmin<GAP<Lmax)ならば、自ゾーンZnを高速運転に切り替えて搬送物間距離を詰める。
(2)自ゾーンZn及び下流ゾーンZn+1に搬送物が在荷しており、下流ゾーンZn+1が高速運転中の場合、自ゾーンZnも高速運転に切り替えて搬送物間距離が開くのを回避する。つまり、アキュムレーションコンベヤ10において、あるゾーンが高速運転に切り替わると、このゾーンより上流側で連続して搬送物が在荷しているゾーンの全てが高速運転に切り替わり、後続する搬送物が相互の距離を保持しながら、ある2つの隣接する搬送物間の距離を好適に詰めることができる。
Claims (5)
- 搬送路を形成すべく互いに平行に併設された複数本のキャリヤローラ(18)の回転を複数のゾーン(Z)ごとに制御することにより、搬送物(C)の搬送又は停止を行うアキュムレーションコンベヤ(10)において、
前記ゾーン(Z)ごとに設けられ、該ゾーン(Z)を構成するキャリヤローラ(18)を回転駆動する駆動手段(20)と、
前記ゾーン(Z)ごとに設けられ、前記搬送物(C)の通過を検知する検知手段(22)と、
先行する搬送物(C)に後続の搬送物(C)を接近させるべく、前記検知手段(22)からの検知情報に基づいて前記駆動手段(20)を制御し、前記ゾーン(Z)の搬送速度を切り換える制御手段(26)と
を備えることを特徴とするアキュムレーションコンベヤ。 - 前記制御手段(26)は前記ゾーン(Z)ごとに設けられており、
各ゾーン(Zn)における前記制御手段(26)は、当該ゾーン(Zn)、その上流に隣接するゾーン(Zn-1)及びその下流に隣接するゾーン(Zn+1)のそれぞれに設けられた前記検知手段(22n-1,22n,22n+1)からの検知情報に基づき、当該ゾーン(Zn)における前記駆動手段(20n)を制御することを特徴とする請求項1に記載のアキュムレーションコンベヤ。 - 前記各ゾーン(Zn)における前記制御手段は、当該ゾーン(Zn)及びその下流に隣接するゾーン(Zn+1)のそれぞれに設けられた前記検知手段(22n,22n+1)からの検知情報に基づき、当該ゾーン(Zn)上の搬送物(C)と、その下流に隣接するゾーン(Zn+1)上の搬送物(C)との間の距離に関する距離情報を推定し、前記推定された距離情報が所定範囲内の場合に、当該ゾーン(Zn)の搬送速度を速くするよう当該ゾーン(Zn)の駆動手段(20n)を制御することを特徴とする、請求項2に記載のアキュムレーションコンベヤ。
- 前記各ゾーン(Zn)における前記制御手段は、当該ゾーン(Zn)及びその上流に隣接するゾーン(Zn-11)のそれぞれに設けられた前記検知手段(22n,22n-1)からの検知情報に基づき、当該ゾーン(Zn)上の搬送物(C)と、その上流に隣接するゾーン(Zn-1)上の搬送物(C)との間の距離に関する距離情報を推定し、前記推定された距離情報が所定範囲内の場合に、当該ゾーン(Zn)の搬送速度を遅くするよう当該ゾーン(Zn)の駆動手段(20n)を制御することを特徴とする、請求項2に記載のアキュムレーションコンベヤ。
- 前記制御手段は1つのみであり、ネットワーク回路を介して各ゾーン(Z)における前記駆動手段(20)及び前記検出手段(22)に接続されていることを特徴とする、請求項1に記載のアキュムレーションコンベヤ。
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EP11731781.8A EP2522602A4 (en) | 2010-01-05 | 2011-01-04 | Accumulation conveyor |
US13/520,756 US20130213768A1 (en) | 2010-01-05 | 2011-01-04 | Accumulation conveyor |
CN201180005398.2A CN103025632B (zh) | 2010-01-05 | 2011-01-04 | 累积式输送机 |
KR1020127020191A KR101809764B1 (ko) | 2010-01-05 | 2011-01-04 | 어큐뮬레이션 컨베이어 |
US15/074,570 US20160200522A1 (en) | 2010-01-05 | 2016-03-18 | Accumulation conveyor |
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JP2010000622A JP5513137B2 (ja) | 2010-01-05 | 2010-01-05 | アキュムレーションコンベヤ |
JP2010-000622 | 2010-01-05 |
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US13/520,756 Substitution US20130213768A1 (en) | 2010-01-05 | 2011-01-04 | Accumulation conveyor |
US13/520,756 A-371-Of-International US20130213768A1 (en) | 2010-01-05 | 2011-01-04 | Accumulation conveyor |
US15/074,570 Continuation US20160200522A1 (en) | 2010-01-05 | 2016-03-18 | Accumulation conveyor |
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WO2011083783A1 true WO2011083783A1 (ja) | 2011-07-14 |
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US (2) | US20130213768A1 (ja) |
EP (1) | EP2522602A4 (ja) |
JP (1) | JP5513137B2 (ja) |
KR (1) | KR101809764B1 (ja) |
CN (1) | CN103025632B (ja) |
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WO2013186288A1 (fr) * | 2012-06-15 | 2013-12-19 | Savoye | Systeme de convoyage modulaire et procede correspondants |
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CN109607245A (zh) * | 2018-12-28 | 2019-04-12 | 唐山智能电子有限公司 | 自动装车机水泥袋连包处理装置 |
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Publication number | Publication date |
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JP5513137B2 (ja) | 2014-06-04 |
EP2522602A1 (en) | 2012-11-14 |
CN103025632A (zh) | 2013-04-03 |
EP2522602A8 (en) | 2013-03-20 |
JP2011140362A (ja) | 2011-07-21 |
US20130213768A1 (en) | 2013-08-22 |
KR101809764B1 (ko) | 2017-12-15 |
CN103025632B (zh) | 2014-10-15 |
US20160200522A1 (en) | 2016-07-14 |
KR20120116967A (ko) | 2012-10-23 |
EP2522602A4 (en) | 2017-12-20 |
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