JP6137985B2 - Luggage leveling system and sorting system - Google Patents

Description

  The present invention relates to a load leveling system for leveling a plurality of loads in a tray and a sorting system using the same.

  Distribution is roughly divided into a stage for collecting products from producers, a stage for sorting the collected products for each consumer, and a stage for delivering the sorted products to each consumer. As a technique for sorting a plurality of packages, Patent Document 1 discloses a system including a transfer line and a plurality of chutes provided in the transfer line. The goods transported on the transport line are distributed to any of a plurality of chutes, sent to another transport line, and stored in a tray such as a folding container at the transport destination.

JP 2003-212314 A

  There are cases where a plurality of trays are provided at the transfer destination of the transport line, and packages are put into a sorting destination tray from among the plurality of trays. In this case, the luggage put into the tray may be rotated, and the luggage loading destination into the tray may be biased. At this time, the height of the luggage in the tray increases, and the luggage easily protrudes from the opening at the top of the tray. If the baggage protrudes, the baggage comes into contact with the outside when the tray is transported, which causes a problem in baggage management convenience.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a load leveling system capable of suppressing the height of loads in a tray and a sorting system using the same.

  One embodiment of the present invention relates to a load leveling system. The load leveling system includes a flapper disposed above a placement area on which the tray is to be placed, and a position adjusting device that relatively moves the tray placed on the placement area and the flapper. When the tray and the flapper are moved relative to each other by the position adjusting device, the load accommodated in the tray can be contacted.

  Another aspect of the present invention relates to a sorting system. The sorting system includes a baggage leveling system, a baggage loading device for loading a baggage into the loading area, and a baggage loading device for a tray as a baggage sorting destination among a plurality of trays loaded in the loading region. An alignment device for aligning the relative positions. The thing of the above-mentioned aspect is used for a load leveling system.

  According to these aspects, when the flapper and the tray move relative to each other, the flapper comes into contact with the luggage accommodated in the tray. Therefore, the height of the luggage in the tray is leveled so as to be suppressed, and the height can be suppressed.

  According to an aspect of the present invention, the height of luggage in the tray can be suppressed.

It is a schematic diagram which shows a part of sorting system which concerns on 1st Embodiment. It is side surface sectional drawing which shows the vicinity of the luggage | loading device which concerns on 1st Embodiment. It is a side view which shows the receiving position and insertion standby position of a delivery conveyor. It is side surface sectional drawing which shows the vicinity of the 1st flapper which concerns on 1st Embodiment. It is front sectional drawing which shows the vicinity of the 1st flapper which concerns on 1st Embodiment. It is a plane sectional view showing the neighborhood of the 1st flapper concerning a 1st embodiment. It is side surface sectional drawing which shows the state in which the several load was accumulated and accommodated in the tray. It is side surface sectional drawing which shows the other state in which the several load was accommodated in the tray in piles. It is a functional block diagram of the sorting system concerning a 1st embodiment. It is a figure which shows the protrusion sensor which detects the package in a tray. It is side surface sectional drawing which shows the structure of the flapper which concerns on a 1st modification. It is side surface sectional drawing which shows the structure of the load equalization system which concerns on 2nd Embodiment.

[First Embodiment]
1 and 2 show a sorting system 100 in which the load leveling system 10 according to the first embodiment is used.

  The sorting system 100 is used in a logistics facility such as a distribution center. The sorting system 100 is used to sort packages W collected from producers and the like when shipping from producers and wholesalers to retailers and consumers. In the drawing, the luggage W represents a relatively hard box such as a cardboard packed with goods, but it may be a relatively soft bag that wraps clothing or the like.

  The sorting system 100 includes a primary transfer line 110, a secondary transfer line 120, an alignment device 130, a tray group 140, a load input device 150, a load leveling system 10, and a control unit 160 (not shown). With. In the illustrated example, one secondary transport line 120 is shown, and the other secondary transport lines 120 are omitted.

  The primary conveyance line 110 is installed in a loop shape, and is configured by a conveyance device such as a belt conveyor. The primary transport line 110 transports the load W that is input from a load input port (not shown). The package W of the primary transport line 110 is sent out from a plurality of secondary transport lines 120 to one secondary transport line 120 that is a sorting destination of the package W by a known sorting mechanism such as a cross belt.

  The secondary conveyance line 120 is branched from the primary conveyance line 110. The secondary conveyance line 120 includes a chute 121, a plurality of buffer conveyors 125, and a supply conveyor 127. As shown in FIG. 2, each of the buffer conveyors 125 and the supply conveyors 127 is installed in series along the conveyance path of the secondary conveyance line 120, and is fixed to the floor surface 101 via a column (not shown). It is supported by one support frame 129A. The cargo W sent out from the primary conveyance line 110 is conveyed from the chute 121 to the supply conveyor 127 through each buffer conveyor 125.

  The alignment device 130 is provided below the secondary conveyance line 120. The alignment device 130 is configured by a conveying device such as a belt conveyor, and the tray group 140 is placed on the upper surface 131 thereof. That is, the upper surface 131 of the alignment device 130 becomes a placement area 133 where the tray 141 is to be placed. As shown in FIG. 1, the alignment device 130 moves the tray group 140 along the row direction X (described later), and aligns the relative position in the row direction X of the luggage input device 150 with respect to the tray group 140.

  The tray group 140 includes a plurality of trays 141. The tray 141 is configured by a box having an upper portion opened. In the example shown in the figure, the plurality of trays 141 are a plurality of trays 141 (five in the figure) arranged in a row in the horizontal direction X as a unit tray row, and a plurality of trays 141 are arranged in the horizontal direction Y orthogonal to the horizontal direction X. Tray rows (two rows in the figure) are arranged side by side. Hereinafter, the horizontal direction X in which the trays 141 are arranged in a row is referred to as a row direction X, and the horizontal direction Y orthogonal to the row direction X is referred to as a column direction Y. The plurality of trays 141 are arranged in a matrix in the row direction X and the column direction Y.

  The luggage input device 150 includes a delivery conveyor 151 and a lateral movement device 153. The delivery conveyor 151 is illustrated as a belt conveyor, but may be another conveyor such as a roller conveyor or a chain conveyor. A load W is placed on the delivery conveyor 151, and the load W on the load W is conveyed in the front-rear direction A (hereinafter referred to as direction A) of the delivery conveyor 151 by driving the conveyor drive motor 152.

  The delivery conveyor 151 is configured to be movable in the direction A as a whole by a back-and-forth movement mechanism combined with a stepping motor or the like. The entire delivery conveyor 151 is configured to be tiltable about a lateral direction axis (direction C in FIG. 2) by a tilting mechanism combined with a stepping motor or the like. As for the delivery conveyor 151, the front-end part 151a moves up and down by tilting of a tilting mechanism.

  The lateral movement device 153 includes a carriage unit 155 and a lateral rail 157. A plurality (two in the figure) of the horizontal rails 157 are provided in parallel to each other along the column direction Y. The horizontal rail 157 is supported by a second support frame 129B that is fixed to the floor surface 101 via a column (not shown). The carriage unit 155 is configured to be able to travel along the horizontal rail 157. The carriage unit 155 travels along the horizontal rail 157 by a carriage drive motor (not shown), and the delivery conveyor 151 also moves along the row direction Y. That is, the lateral movement device 153 aligns the relative position in the column direction Y of the entire delivery conveyor 151 with respect to the tray group 140 and the secondary conveyance line 120.

  As shown in FIG. 3, the delivery conveyor 151 is movable between a predetermined receiving position P and a loading standby position Q1 by tilting by a tilting mechanism. When in the receiving position P, the package W is delivered from the supply conveyor 127 to the delivery conveyor 151. When the entire delivery conveyor 151 is moved forward at the loading standby position Q1, its front end portion 151a is inserted into the sorting destination tray 141 arranged at a predetermined arrangement position.

  Returning to FIG. 2, the load leveling system 10 includes a flapper 20 and a flapper sensor 40 (not shown). The load leveling system 10 includes the alignment device 130 described above.

  The flapper 20 includes a first flapper 20A and a second flapper 20B. Hereinafter, the components having the same name are described as “first” and “second”, and “A” and “B” are described at the end of the reference numerals. Is omitted.

  The flapper 20 is disposed on the upper surface 131 of the alignment device 130 on which the tray 141 is placed, that is, above the placement region 133 on which the tray 141 is to be placed. The upper end portion 20a of the first flapper 20A is attached to a first horizontal member 27A installed along the column direction Y at the lower portion of the first support frame 129A. The upper end 20a of the second flapper 20B is attached to a second horizontal member 27B installed along the column direction Y on the side of the second support frame 129B.

  4 to 6 show the vicinity of the first flapper 20A, FIG. 4 is a side view, FIG. 5 is a front sectional view, and FIG. 6 is a plan sectional view. 6 is also a cross-sectional view taken along line AA in FIG. Since most of the configurations of the first flapper 20A and the second flapper 20B are common, the configuration of the flapper 20 will be described mainly with reference to FIGS.

  The flapper 20 is formed in a plate shape extending vertically in the illustrated example. As shown in FIG. 6, the flapper 20 is formed such that the lateral width dimension L2 is longer than the width dimension L1 in the column direction Y including the openings 141a of the respective trays 141 adjacent in the column direction Y.

  Returning to FIG. 4, the flapper 20 includes a plurality of divided members 21, a hinge portion 23, and an urging member 25. The dividing member 21 is formed in a shape in which the flapper 20 is vertically divided into a plurality (two in the drawing), and is arranged adjacent to the upper and lower sides.

  The hinge part 23 includes a first hinge part 23A provided at the upper end part 20a of the flapper 20 and a second hinge part 23B provided at an intermediate part 20c in the range extending up and down of the flapper 20. 23 A of 1st hinge parts connect the horizontal member 27 as a to-be-attached body to which the upper end part 20a of the flapper 20 is attached, and the flapper 20 so that rotation is possible. The 2nd hinge part 23B connects the upper division member 21 and the lower division member 21 so that rotation is possible. That is, the hinge part 23 is provided in a part of range which extends up and down of the flapper 20, and connects an upper and lower member so that rotation is possible. In the illustrated example, the hinge portion 23 is configured by a hinge. However, the hinge portion 23 is not limited to the hinge as long as the upper and lower members are rotatably connected.

  The entire flapper 20 is configured to be rotatable by the first hinge portion 23A. Part of the flapper 20 (the lower divided member 21 in the drawing) is configured to be rotatable by the second hinge portion 23B. That is, the flapper 20 is configured to be displaceable in the horizontal direction (the row direction X in the drawing) by the hinge portion 23.

  When the tray 141 is moved in the row direction X by the alignment device 130, the flapper 20 can come in contact with the luggage W that protrudes from the opening 141 a of the tray 141 among the luggage W accommodated in the tray 141. That is, the flapper 20 can come into contact with the luggage W protruding from the tray 141 when the tray 141 and the flapper 20 on the placement region 133 are relatively moved in the lateral direction. The flapper 20 is disposed at a position where the lower end portion 20b of the flapper 20 is slightly shifted upward from the opening 141a of the tray 141 so as to contact the protruding baggage W. The distance between the lower end 20b of the flapper 20 and the opening 141a of the tray 141 is, for example, 10 cm or less. The alignment device 130 functions as a position adjustment device 30 that relatively moves the tray 141 and the flapper 20 in the lateral direction.

  The urging member 25 is attached to a lower end portion 20 b that is a lower portion of the flapper 20. The urging member 25 is configured by a rod-like member that is long in the row direction Y, and is configured as a weight that adds weight to the attachment position to the flapper 20. The cross-sectional shape of the urging member 25 is formed in a circular shape in order to reduce an impact at the time of contact with the load W, but may be formed in a square shape or the like.

  When the flapper 20 contacts the load W in the tray 141 and is displaced in the lateral direction, the urging member 25 is in a direction opposite to the displacement direction (for example, the direction D1 in FIG. 4) (direction D2 in FIG. 4). The flapper 20 is urged by its own weight. The urging member 25 may be an elastic body such as a spring or rubber in addition to the weight body as long as the flapper 20 can be urged in this way.

  FIG. 7A shows a state in which a plurality of loads W are stacked and accommodated in the tray 141 and the upper-stage load W protrudes from the opening 141 a of the tray 141. At this time, when the tray 141 is moved in the row direction X by the alignment device 130, the lower part of the flapper 20 comes into contact with the protruding luggage W. When there is an empty space S1 in the tray 141 in the direction (direction E2 in FIG. 7) opposite to the movement direction of the tray 141 (direction E1 in FIG. 7) from the protruding baggage W in the tray 141, FIG. As shown in (), the load W is pushed by the flapper 20 as the tray 141 moves. The luggage W moves to the empty space S1 by pressing the flapper 20. If there is another free space S2 at a position lower than the destination free space S1, the load W falls into the free space S2 as shown in FIG. 7C, and the height of the load W in the tray 141 is increased. It is leveled so that it can be suppressed.

  Returning to FIGS. 4 and 6, the flapper sensor 40 (hereinafter also referred to as the sensor 40) includes a light projecting unit 41 that projects detection light and a light receiving unit 43 that receives the detection light projected by the light projecting unit 41. It is an optical sensor. The sensor 40 is configured so that the light path 45 of the detection light between the light projecting unit 41 and the light receiving unit 43 passes through a predetermined position (hereinafter referred to as a predetermined position). The arrangement, the optical axis of the detection light, and the like are adjusted. This optical path 45 passes substantially horizontally through a position that deviates from the upper side of the opening 141a of the tray 141 in the width direction of the tray 141 (the column direction Y in the drawing) and is shifted upward from the lower end portion 20b of the flapper 20. To do. Further, the optical path 45 passes through a position blocked by the flapper 20 that is not displaced. When the flapper 20 is not displaced, the detection light is blocked by the flapper 20, and the detection light is not received by the light receiving unit 43.

  In FIG. 8A, a plurality of packages are stacked and accommodated in the tray 141, and the tray 141 is moved in the direction opposite to the moving direction of the tray 141 (direction E1 in FIG. 8) (direction E2 in FIG. 8). Indicates that there is no free space. When the flapper 20 comes into contact with the load W in the tray 141, the flapper 20 is displaced by the pressing of the load W as shown in FIG. The pressing of the flapper 20 by the load W occurs when there is no empty space in the direction E2 opposite to the moving direction E1 of the tray 141 and the load W in the tray 141 cannot be moved by the flapper 20.

  In this case, the baggage W protruding from the opening 141a of the tray 141 is not leveled, and depending on the size of the baggage W, the entire flapper 20 is displaced so as to exceed a predetermined position that becomes the optical path 45 of the detection light. When the entire flapper 20 is displaced beyond the optical path 45 of the detection light, the detection light is not blocked by the flapper 20 but is received by the light receiving unit 43. That is, the sensor 40 detects whether or not the flapper 20 is displaced beyond a predetermined position depending on whether or not the detection light is blocked by the flapper 20 when the flapper 20 is displaced.

  When the sensor 40 detects that the flapper 20 has been displaced beyond a predetermined position, it can be determined that the luggage W has protruded greatly from the opening 141a of the tray 141. On the other hand, if it is detected by the sensor 40 that it has not been displaced beyond the predetermined position, it can be determined that the luggage W does not protrude from the opening 141a of the tray 141, or the amount of protrusion is small. The sensor 40 outputs the detection result from the sensor 40 to the control unit 160.

  FIG. 9 shows a functional block diagram of the sorting system 100. The control unit 160 is realized in hardware by a CPU, memory, or other LSI of an arbitrary computer, and is realized in software by a program loaded in the memory. The control unit 160 controls the operations of the alignment device 130 and the baggage input device 150 and executes the sorting operation. When the sensor 40 detects that the flapper 20 is displaced beyond a predetermined position, the control unit 160 may stop the sorting operation. In addition, when the sensor 40 detects that the flapper 20 is displaced beyond a predetermined position, the control unit 160 may display that fact on a display unit such as a display.

  The sorting system 100 described above roughly divides and executes a sorting operation including a positioning operation and a loading operation. In the alignment operation, the delivery conveyor 151 is aligned with the tray 141 that is a sorting destination of the package W. In the loading operation, the package W is loaded into the tray 141 as the sorting destination. The sorting system 100 repeats the positioning operation and the loading operation, and sorts the plurality of packages W transported to the secondary transport line 120 into the respective trays 141 of the tray group 140.

  In the alignment operation, the lateral movement device 153 and the alignment device 130 cooperate with each other under the control of the control unit 160, and the row direction Y of the delivery conveyor 151 with respect to the tray 141 as the sorting destination is selected from the plurality of trays 141. And the relative position in the row direction X is aligned. As a result of this alignment operation, the sorting destination tray 141 is arranged at a predetermined arrangement position at the package input destination of the delivery conveyor 151.

  A method for moving the sorting destination tray 141 to a predetermined arrangement position is not particularly limited. For example, a plurality of trays 141 are arranged at a predetermined initial position on the alignment apparatus 130, the initial position is stored in the control unit 160, and the movement amount by the alignment apparatus 130 is controlled, so that the sorting destination tray is controlled. 141 may be moved to a predetermined arrangement position. Alternatively, the position of the sorting destination tray 141 may be grasped using a sensor, and the movement amount by the alignment device 130 may be controlled.

  In the loading operation, the delivery conveyor 151 is moved to the receiving position P (see FIG. 3) under the control of the control unit 160, and the package W is delivered from the supply conveyor 127 to the delivery conveyor 151. The delivery conveyor 151 is moved to the charging standby position Q1, the entire delivery conveyor 151 is moved forward from there, and the front end portion 151a thereof is inserted into the tray 141. In this state, while sending the cargo W on the delivery conveyor 151 forward, the delivery conveyor 151 is moved rearward and the like so that the cargo W on the delivery conveyor 151 is put into the tray 141.

  According to the baggage leveling system 10 described above, when the flapper 20 and the tray 141 move relative to each other, the flapper 20 contacts the baggage W in the tray 141. Accordingly, the upper-stage baggage W is leveled so that the height of the baggage W in the tray 141 can be suppressed by moving to the lower position. Further, since the upper-stage luggage W moves to the empty space in the tray 141, the empty space in the tray 141 is reduced, and a large amount of luggage W can be accommodated in the tray 141.

  Further, since the flapper sensor 40 is provided, there are the following advantages. In order to prevent the luggage W from protruding from the opening 141 a of the tray 141, as shown in FIG. 10, a protrusion sensor 180 may be provided above the tray 141. FIG. 10A is a plan view of the tray 141 as viewed from above, and FIG. 10B is a side sectional view of the tray 141 as viewed from the side.

  The protrusion sensor 180 includes a light projecting unit 181 that projects detection light and a light receiving unit 183 that receives the detection light projected by the light projecting unit 181. The protrusion sensor 180 is configured such that the optical path 185 of the detection light between the light projecting unit 181 and the light receiving unit 183 passes above the opening 141 a of the tray 141. When the luggage W protrudes from the opening 141 a of the tray 141, the detection light is blocked by the luggage W and the detection light is not received by the light receiving unit 183. The protrusion sensor 180 detects the presence or absence of protrusion of the luggage W based on whether or not the detection light is received by the light receiving unit 183. When the protruding of the load W is detected, the system is usually stopped, and the operator works on the protruding load W by leveling the operator.

  Since the protruding sensor 180 has an optical path 185 above the opening 141a of the tray 141, even when a soft part such as an outer edge of a plastic bag or an attachment part such as a tag sticking out of the opening 141a of the tray 141, Detect protrusions. Since these soft portions do not have a great influence on the contents of the luggage W even if they come into contact with the outside during transport of the tray 141, the soft portions do not need to be dealt with, for example. If the system is stopped until this soft part or the like is detected, work efficiency such as sorting work is reduced.

  In this regard, according to the above-described baggage leveling system 10, since it is possible to determine whether or not the baggage W protrudes by detecting the displacement of the flapper 20, it is not necessary to use an optical path above the opening 141 a of the tray 141. Therefore, detection of a soft part etc. is suppressed and the frequent stop of a system becomes unnecessary. Further, even if the soft part or the like as described above protrudes from the opening 141 a of the tray 141, the soft part or the like moves by contacting the flapper 20, so that the flapper 20 is not greatly displaced and erroneous detection by the flapper sensor 40 is not caused. Not likely to occur.

  Further, since the flapper 20 can be displaced, when the flapper 20 comes into contact with the load W, a force such as an impact force acting between the flapper 20 and the load W is released by the displacement of the flapper 20 and a large force is applied to the load W. You can move without spending.

  In addition, since the biasing member 25 is provided in the flapper 20, the force applied in the direction in which the load W is moved is increased while the load W is moved while the impact force acting between the flapper 20 and the load W is released. It becomes easy.

  Further, according to the sorting system 100, when the plurality of trays 141 are moved by the alignment device 130 for the alignment operation, the baggage W in the tray 141 is leveled by the flapper 20, and the baggage W is aligned with the alignment operation. Can be leveled.

[First Modification]
Fig.11 (a) shows the structure of the flapper 20 as a 1st modification. The flapper 20 is made of a flexible material such as rubber. That is, as shown in FIG. 11B, the flapper 20 is configured to be displaceable at least in the lateral direction (the row direction X in the drawing).

  Since the flapper 20 can be displaced, when the flapper 20 comes into contact with the load W, a force such as an impact force acting between the flapper 20 and the load W is released by the displacement of the flapper 20, and a large force is not applied to the load W. Moved to.

[Second Embodiment]
FIG. 12A shows a load leveling system 10 according to the second embodiment. The second embodiment is different from the first embodiment in that the load leveling system 10 includes a flapper actuator 50 (hereinafter also referred to as an actuator 50). In the following embodiments, the same elements as those described in the first embodiment are denoted by the same reference numerals, and redundant descriptions are omitted.

  The actuator 50 is attached to the lower part of the first support frame 129A. The flapper 20 is provided apart from the first support frame 129 </ b> A, and is attached to the distal end portion of the movable rod 51 of the actuator 50. The actuator 50 is a linear actuator or the like, and moves the first flapper 20 </ b> A in the row direction X by the movement of the movable rod 51. The actuator 50 may be movable at least in a range S3 including the inner width of the range extending in the horizontal direction (the row direction X in the drawing) of the tray 141. The actuator 50 functions as a position adjusting device 30 that relatively moves the upper surface 131 of the alignment device 130, that is, the tray 141 placed on the placement region 133 and the flapper 20. As illustrated in FIG. 12B, when the flapper 20 is moved by driving the actuator 50, when the load W protrudes from the opening 141 a of the tray 141, the flapper 20 contacts the load W and leveles the load W.

  As mentioned above, although this invention was demonstrated based on embodiment, embodiment shows only the principle and application of this invention. In the embodiment, many modifications and arrangements can be made without departing from the spirit of the present invention defined in the claims.

  In the embodiment, the example in which the load leveling system 10 is used in the sorting system 100 has been described. In addition to this, the load leveling system 10 may be used in a conveyance line for conveying the tray 141. In this case, the upper surface of the transport line becomes a placement area 133 on which the tray 141 is placed, and functions as a position adjusting device 30 that relatively moves the tray 141 and the flapper 20.

  In the embodiment, the flapper 20 that contacts the load W protruding from the opening 141a of the tray 141 has been described. However, the flapper 20 lowers the flapper 20 so as to contact the load W below the opening 141a of the tray 141. Thus, the luggage W in the tray 141 may be leveled. Further, in the embodiment, the flapper 20 contacts the upper package W among the plurality of packages W accommodated in the tray 141, but contacts the single package W stored in the tray 141. The baggage W in the tray 141 may be leveled. In this case, the baggage W in the tray 141 is leveled with the baggage in the vertical posture placed in the horizontal posture.

  In the embodiment, the sensor 40 detects whether or not the optical path 45 of the detection light passes substantially horizontally at a predetermined position and the entire flapper 20 is displaced beyond the predetermined position. In addition, the optical path 45 is configured to pass substantially vertically through a position deviated in the width direction of the tray 141 from above the opening 141 a of the tray 141 and shifted in the row direction X from the flapper 20. Also good. In this case, when the flapper 20 is not displaced, the detection light is not blocked by the flapper 20 but is received by the light receiving unit 43. On the other hand, when the flapper 20 cannot level the protruding baggage W, the flapper 20 is displaced so that a part of the flapper 20 reaches the optical path 45 of the detection light, that is, beyond a predetermined position that becomes the optical path 45 of the detection light. Is blocked by the flapper 20, and the detection light is not received by the light receiving unit 43.

  Further, the sensor 40 is exemplified as an optical sensor in order to detect whether or not the flapper 20 is displaced beyond a predetermined position, but an image sensor, an angle sensor, or the like may be used.

  The alignment device 130 moves the plurality of trays 141 in the row direction X and aligns the relative position of the tray 141 with respect to the delivery conveyor 151. However, the alignment device 130 moves the delivery conveyor 151 in the row direction X and moves the relative positions of the trays 141 to each other. May be aligned.

DESCRIPTION OF SYMBOLS 10 Luggage leveling system, 20 Flapper, 21 Dividing member, 23 Hinge part, 25 Energizing member, 27 Horizontal member, 30 Position adjusting device, 40 Flapper sensor, 41 Light emitting part, 43 Light receiving part, 45 Light path, 50 Flapper Actuator, 51 Movable rod, 100 Sorting system, 110 Primary transfer line, 120 Secondary transfer line, 121 Chute, 125 Buffer conveyor, 127 Supply conveyor, 130 Positioning device, 133 Placement area, 140 Tray group, 141 Tray, 141a Opening, 150 Luggage input device, 151 delivery conveyor, 153 lateral movement device, 155 cart unit, 157 horizontal rail, 160 control unit, 161 sorting operation control unit, 163 projection detection unit, 180 projection sensor, 181 light projection unit, 183 light reception Department.

Claims (7)

A flapper disposed above the placement area on which the tray is to be placed;
A position adjusting device for relatively moving the tray placed in the placement area and the flapper;
The lower portion of the flapper can contact a load protruding from the opening at the upper portion of the tray when the tray and the flapper are moved relative to each other by the position adjusting device, and can be displaced when the load comes in contact with the load. Yes,
A load leveling system , further comprising a sensor for detecting whether or not a lower portion of the flapper is displaced beyond a predetermined position . The sensor includes a light projecting unit that projects detection light and a light receiving unit that receives the detection light.
In the plan view, the detection light has an optical path at a position deviated from the opening of the tray in a direction orthogonal to a relative movement direction of the tray and the flapper by the position adjusting device.
The sensor detects whether or not the lower part of the flapper is displaced beyond a predetermined position based on whether or not the detection light is blocked by the flapper when the lower part of the flapper is displaced. Item 1. A cargo leveling system according to item 1 . The flapper luggage leveling system according to claim 1 or 2, a part of the hinge portion is provided, characterized in that it is configured to be rotatable by the hinge portion. The load leveling system according to claim 1 or 2 , wherein the flapper is made of a flexible material. The flapper can be displaced at its lower part when it comes into contact with the cargo accommodated in the tray, and when it is displaced by contact with the luggage, the lower part of the flapper is biased to the opposite side of the displacement direction. The load leveling system according to any one of claims 1 to 4 , further comprising a biasing member. 6. The load leveling system according to claim 5 , wherein the urging member is a weight attached to the flapper. The luggage leveling system according to any one of claims 1 to 6 ,
A baggage loading device for loading a baggage into a tray placed in the placement area;
A sorting system comprising: an alignment device configured to align a relative position of the luggage input device with respect to a tray serving as a package sorting destination among a plurality of trays placed in the placement area.

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