WO2016051509A1

WO2016051509A1 - Pallet stacking device and pallet destacking device

Info

Publication number: WO2016051509A1
Application number: PCT/JP2014/076097
Authority: WO
Inventors: 隆伸松井
Original assignee: 日本パレットレンタル株式会社
Priority date: 2014-09-30
Filing date: 2014-09-30
Publication date: 2016-04-07
Also published as: JP6266118B2; JPWO2016051509A1

Abstract

A pallet stacking device (3) comprises: a supporting portion that supports one or more stacked pallets; a lifter that includes a mounting portion on which the stacked pallets are mounted and is provided below the supporting portion so as to lift the pallets received one by one, with the pallets mounted on the mounting portion, and cause the pallets to be supported by the supporting portion, thereby stacking the pallets; and a discharge portion (45) that discharges the plurality of stacked pallets. The pallet stacking device is equipped with: a cover (31) that is provided to the frame of the pallet stacking device in such a manner as to at least partially surround the lateral sides and upper side of the pallets supported by the supporting portion; and an air blowing means (32) for sending air to the pallets supported by the supporting portion.

Description

Pallet stacking device and pallet stacking device

The present invention relates to a pallet stacking device and a pallet stacking device.

Pallets made of plastics and other resins are used for transporting goods in various industries. When the pallets are stored or moved in a warehouse or the like, a certain number of pallets are stacked and handled. Devices for stacking and stacking pallets are called stackers and unstackers. For example, a stacker device as described in Patent Document 1 is known.

JP 2010-137984 A

Since the pallet is used repeatedly, it is necessary to clean the pallet that has been used a certain number of times. The resin pallet is washed with, for example, water or a washing solution. In order to use the cleaned pallet again, the pallet must be dried. In order to completely dry the pallets before stacking, dedicated equipment for drying is required. In order to provide equipment for drying the pallet, cost and space are required. In addition, when pallets are stacked and stored in a warehouse or outdoors when the temperature is low, the stacked pallets may be frozen. In order to remove and use the stacked pallets one by one, the frozen pallets must be thawed. In order to provide equipment for heating and the like for thawing the frozen pallet, cost and space are required.

Therefore, the present invention has been made in view of the above problems, and provides a pallet stacking apparatus and a pallet stacking apparatus that can dry or thaw pallets without requiring much cost and space. Objective.

A pallet stacking apparatus according to an aspect of the present invention includes a support unit that supports one or more stacked pallets, and a mounting unit on which stacked pallets are mounted, and is provided below the support unit. A lifter that stacks the pallets that are received one by one by placing the pallets on the mounting unit and raising the pallets and supporting the pallets on the support unit, and a discharge unit that discharges the plurality of stacked pallets A cover provided on the frame of the pallet stacking device so as to surround at least a part of the side and upper side of the pallet supported by the support portion, and a support portion And air blowing means for sending out air toward the pallet supported by.

In the pallet stacking apparatus of the above aspect, since the pallets are sequentially received and stacked one by one, the pallets are stacked in the pallet stacking apparatus until they are stacked and discharged. It stays for a certain time in the state. Then, at least a part of the side and upper side of the stacked pallets is surrounded by the cover, and air is sent toward the pallet while the pallet stays in the space surrounded by the cover. If the pallet is wet, the pallet can be dried. Also, if the stacked pallets are frozen, the pallets can be thawed.

In the pallet stacking apparatus according to another aspect, the cover is provided so as to surround the side and upper side of the pallet supported by the support portion, and is fixed to the frame of the pallet stacking apparatus. Is connected to the frame body or the fixed part via the hinge and is rotatable about the shaft center, and is supported by the support part. It is also possible to include a door part that is a part of the side of the pallet and that opens and closes so that the discharge direction in which the pallet is discharged by the discharge part can be opened.

According to the above aspect, the cover surrounding the side and top of the stacked pallets includes the fixed portion and the door portion, and the door portion is opened and closed by the hinge rotation mechanism. The door part is opened in the discharge direction by pushing the door part and moving it in the discharge direction. Thereby, it becomes possible to discharge the stacked pallets without providing a power source for opening the door.

In a pallet stacking apparatus according to yet another embodiment, the hinge may include a restoring member that generates a restoring force that closes the door part when the door part is opened.

According to the above aspect, since the hinge generates a restoring force that closes the opened door portion, the door portion is discharged after the stacked pallets are discharged without providing a power source for closing the door portion. Can be closed. Further, the speed at which the door is closed can be adjusted by adjusting the weight of the door and the restoring force of the restoring member. Therefore, it is possible to adjust the time from when the door is opened to when it is closed so as to provide time for ventilation in the space surrounded by the cover.

In the pallet stacking apparatus according to another embodiment, the air blowing means is provided below the lifter and blows upward, and the mounting portion of the lifter is at least a part of the opening on the bottom surface of the mounted pallet. It is good also as having a shape which exposes.

According to the above embodiment, the lifter mounting portion does not block the air sent from below, so the air sent to the opening on the lower surface of the pallet is applied. The air applied to the opening on the lower surface of the pallet passes through the fork insertion port on the side of the pallet or the hole on the upper surface of the pallet, and goes to the pallet stacked in the upward direction. In addition, when the pallet is not placed on the lifter, the placing portion and the pallet do not block the upward air, so the air is applied to the stacked pallets. Therefore, drying or thawing of the stacked pallets is facilitated.

In a pallet stacking apparatus according to still another embodiment, the blowing means may include a heat source for heating the air and a blowing unit that sends out the air heated by the heat source as hot air.

According to the above embodiment, since the heated air is sent toward the stacked pallets, drying and thawing of the stacked pallets is further promoted.

A pallet spreading apparatus according to an aspect of the present invention includes: a receiving unit that receives a plurality of stacked pallets; a support unit that is received by the receiving unit and supports the plurality of stacked pallets; A stage is provided by lowering the pallet while placing one pallet of the plurality of pallets provided below the support part and supported by the support part on the placement part. A pallet leveling device having a lifting lifter, the cover provided on the frame of the pallet leveling device so as to surround at least a part of the side and upper side of the pallet supported by the support portion And air blowing means for sending air toward the pallet supported by the support portion.

In the pallet stacking apparatus of the above aspect, the stacked pallets are sequentially stacked one by one, so that the pallet is placed in the pallet stage until the stacked pallets are received and discharged one by one. It stays for a certain period of time in a stacked state in the bulk device. Then, at least a part of the side and upper side of the stacked pallets is surrounded by the cover, and air is sent toward the pallet while the pallet stays in the space surrounded by the cover. If the pallet is wet, the pallet can be dried. Also, if the stacked pallets are frozen, the pallets can be thawed.

In the pallet spreading apparatus according to another embodiment, the cover is provided so as to surround the side and upper side of the pallet supported by the support portion, and is fixed to the frame of the pallet spreading apparatus. Is connected to the frame body or the fixed part via the hinge and is rotatable about the shaft center, and is supported by the support part. And a door part that opens and closes so that the receiving direction in which the pallet is received by the receiving part can be opened.

According to the above aspect, the cover surrounding the side and top of the stacked pallets includes the fixed portion and the door portion, and the door portion is opened and closed by the hinge rotation mechanism. By moving the door portion in the receiving direction while pushing the door portion, the door portion is opened in the receiving direction. Thereby, it becomes possible to discharge the stacked pallets without providing a power source for opening the door.

In a pallet spreading apparatus according to yet another embodiment, the hinge may include a restoring member that generates a restoring force that closes the door when the door is opened.

According to the above aspect, since the hinge generates a restoring force that closes the opened door portion, the door portion is received after the stacked pallets are received without providing a power source for closing the door portion. Can be closed. Further, the speed at which the door is closed can be adjusted by adjusting the weight of the door and the restoring force of the restoring member. Therefore, it is possible to adjust the time from when the door is opened to when it is closed so as to provide time for ventilation in the space surrounded by the cover.

In the pallet spreading apparatus according to another embodiment, the air blowing means is provided below the lifter and blows upward, and the mounting portion of the lifter is at least a part of the opening on the bottom surface of the pallet placed It is good also as having a shape which exposes.

In a pallet spreading apparatus according to yet another embodiment, the blowing means may include a heat source for heating the air and a blowing unit that sends out the air heated by the heat source as hot air.

According to the present invention, the pallet can be dried or thawed without requiring much cost and space.

It is a front view of a pallet washing line including a pallet stacking device and a pallet stacking device. FIG. 2 is a perspective view of the pallet. Fig.3 (a) is a front view of the pallet shown in FIG. FIG. 3B is a side view of the pallet shown in FIG. FIG. 3C is a bottom view of the pallet shown in FIG. It is a perspective view which shows a pallet stacking apparatus. It is a perspective view which shows a pallet stacking apparatus. It is a perspective view which shows a pallet stripping apparatus. It is a perspective view which shows a pallet stripping apparatus. It is a perspective view which shows a stacker part and an unstacker part. It is a perspective view which shows the example of the mounting part of a lifter.

Hereinafter, embodiments of a pallet stacking apparatus and a pallet stacking apparatus according to the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals.

FIG. 1 is a front view schematically showing a pallet washing line including a pallet stacking device and a pallet stacking device. As shown in FIG. 1, the pallet cleaning line 1 includes a pallet stacking device 3 and a pallet stacking device 5. The pallet cleaning line 1 further includes a pallet cleaning device 7 and a pallet moving unit 9.

The pallet stacking device 3 is a device for stacking pallets received one by one and discharging a plurality of stacked pallets.

The pallet spreading device 5 is a device that accepts a plurality of stacked pallets, separates the stacked pallets one by one, and discharges the stacked pallets.

The pallet cleaning device 7 is a device for cleaning pallets one by one. For example, the pallet washing device 7 is a device for washing the pallet with water. The pallet cleaning device 7 in the present embodiment may be a known device and is not limited to any device.

The pallet moving unit 9 is a means for moving the pallet and is constituted by, for example, a roller conveyor. Moreover, the pallet moving part 9 is good also as being comprised with a chain conveyor. Moreover, the pallet moving part 9 may or may not have a power source for driving the conveyor.

In the pallet washing line 1, first, the pallet leveling device 5 receives and stacks a plurality of stacked pallets (for example, 15 pallets), and discharges the leveled pallets one by one. The pallet washing device 7 receives the pallet discharged from the pallet leveling device 5 via the pallet moving unit 9. Then, the pallet cleaning device 7 cleans the received pallet and discharges the cleaned pallet. The pallet stacking device 3 receives the pallet discharged from the pallet washing device 7 via the pallet moving unit 9. Then, the pallet stacking apparatus 3 stacks the received pallets and discharges a plurality of stacked pallets (for example, 15 stacked pallets).

Next, with reference to FIG. 2, an example of a pallet that is a target to be stacked and separated and cleaned in the present embodiment will be described. FIG. 2 is a perspective view of the pallet P. FIG. As shown in FIG. 2, the pallet P includes an upper surface deck portion P1 that forms a substantially square main surface for placing a load, a lower surface deck portion P5 that forms a substantially square lower surface facing the main surface, and an upper surface deck portion. It has a side surface portion P2 provided between P1 and the lower surface deck portion P5. Further, the pallet P is provided with a fork insertion hole P4 penetrating between a pair of opposing side surface portions P2. Further, on the upper surface of the pallet P, for example, a notch portion P6 that can be put on when the pallet P is transported manually is provided. The cut portion P6 forms a rectangular hole, and the hole passes through the top deck portion P1 and communicates with the fork insertion hole P4.

Subsequently, the pallet P will be further described with reference to FIG. FIG. 3A is a front view of the pallet P shown in FIG. FIG. 3B is a side view of the pallet P. FIG. 3C is a bottom view of the pallet P. FIG. As shown in FIGS. 3A to 3C, the pallet P has four openings P7 on the lower surface. The opening in the opening P7 has a substantially square shape and communicates with the fork insertion hole P4. In the example shown in FIG. 3, two openings P7 are provided so as to communicate with one fork insertion hole P4. Further, the hole formed by the cut portion P6 communicates with the opening of the fork insertion hole P4 and the opening P7.

Next, the pallet stacking apparatus 3 of this embodiment will be described in detail with reference to FIG. 4 and FIG. FIG. 4 is a perspective view showing the pallet stacking apparatus 3 in which the direction in which the pallet is moved in the pallet washing line 1 is taken in the depth direction of the drawing. FIG. 5 is a perspective view showing the pallet stacking apparatus 3 in which the direction in which the pallet is moved in the pallet washing line 1 is the front side of the drawing. As shown in FIGS. 4 and 5, the pallet stacking apparatus 3 includes a stacker unit 40, a cover 31, and a blowing means 32.

The stacker unit 40 is constituted by a device for stacking pallets P. A so-called stacker for stacking pallets is well known. The stacker unit 40 of the present embodiment may be any device as long as it can stack pallets, and may be configured by a known stacker. The stacker unit 40 constitutes a frame body of the pallet stacking device 3. As shown in FIG. 4, the stacker unit 40 supports a plurality of stacked pallets P. The details of the stacker unit 40 will be described later with reference to FIG.

The cover 31 is provided in the stacker unit 40 constituting the frame of the pallet stacking apparatus 3 so as to surround at least a part of the side and upper side of the pallet supported by the stacker unit 40. Specifically, the cover 31 is provided so as to surround the side and upper side of the stacked pallet P supported by the stacker unit 40, and includes a fixing unit 31a, a door unit 31b, and a hinge 31d.

The cover 31 may be made of any material as long as it can surround the stacked pallets P supported by the stacker unit 40, but is made of a material having heat insulating properties and heat retaining properties. It is more preferable. The cover 31 may be made of, for example, cardboard made of synthetic resin (for example, plastic).

The cover 31 may be attached to the frame of the pallet stacking apparatus 3 by any means. For example, when the frame of the pallet stacking device 3 is made of a magnetic material such as iron, a magnet is fixed to the cover 31 and the cover 31 is attached to the frame of the pallet stacking device 3 by the magnetic force of the magnet. It is good to do. In this case, the cover 31 can be easily attached and removed.

The fixing unit 31a is fixed to the stacker unit 40 that constitutes the frame of the pallet stacking apparatus 3. The hinge 31d is provided on the fixed portion 31a with the vertical direction as the axis. The hinge 31d is a component that connects another member to the member to which the hinge 31d is fixed so as to be rotatable or swingable about the axis. Depending on the shape of the stacker employed in the stacker unit 40 of the pallet stacking device 3, the hinge 31 d may be provided in the stacker unit 40 constituting the frame of the pallet stacking device 3.

As shown in FIG. 5, the door portion 31b is connected to the fixed portion 31a via the hinge 31d so as to be rotatable about the axis of the hinge 31d. And the door part 31b is a part of side of the pallet P supported by the stacker part 40, Comprising: The discharge direction (paper front side in FIG. 5) from which the stacked pallets P are discharged | emitted can be open | released. To open and close.

The operation of the door 31b will be specifically described. The pallets P stacked in the stacker unit 40 are discharged by the discharge unit 45. The discharge part 45 is comprised by the chain conveyor, for example. The discharge unit 45 moves the stacked pallets P in the discharge direction. Since the stacked pallets P are moved from the inside of the enclosure by the cover 31 while pushing the door portion 31b, the door portion 31b is opened by rotating around the axis of the hinge 31d. Thereby, it becomes possible to discharge the stacked pallets without providing a power source for opening and closing the door portion 31b.

The hinge 31d includes a restoring member that generates a restoring force that closes the door 31b when the door 31b is opened. Accordingly, the door 31b can be closed after the stacked pallets P are discharged to the outside of the cover 31 without providing a power source for closing the door 31b. In addition, in the hinge 31d, the speed at which the door 31b is closed can be adjusted by adjusting the restoring force of the restoring member with respect to the weight of the door 31b. Therefore, it is possible to adjust the time from when the door portion 31b is opened to when it is closed so that the time for ventilation of the space surrounded by the cover 31 is provided. Instead of including the restoring member in the hinge 31d, for example, by providing a part having restoring force such as a rubber string so as to connect the door part 31b and the fixing part 31a, the opened door part 31b is provided. It is good also as realizing the function to close.

The cover 31 further includes a receiving portion 31c for receiving the pallets P to be stacked. For example, as shown in FIG. 4, the receiving portion 31 c is configured as an opening in the fixing portion 31 a of the cover 31. Moreover, the receiving part 31c is good also as being configured as a notch in the fixing part 31a of the cover 31. That is, the receiving part 31c may be configured in any shape as long as it can receive the stacked pallets P one by one.

The air blowing means 32 is a device that feeds air toward the pallet P supported by the stacker unit 40. The air blowing means 32 is configured by a device such as a blower, for example. In the example shown in FIG.4 and FIG.5, the ventilation means 32 is provided below the stacker part 40, and sends out air upwards.

Moreover, the air blowing means 32 may be configured to include a heat source for heating the air and a blower unit that sends out the air heated by the heat source as hot air. In this case, the blower unit 32 may be configured with a boiler (for example, a steam boiler) as a heat source and a blower that sends out air heated by the boiler as a blower. Moreover, the ventilation means 32 is good also as being comprised with the duct which adjusts the flow path of the hot air from an existing hot air blower. Since the air blowing means 32 includes the heat source and the air blowing unit, the heated air is sent toward the stacked pallets, so that drying or thawing of the stacked pallets is further promoted. The

Next, with reference to FIGS. 6 and 7, the pallet leveling apparatus 5 of the present embodiment will be described in detail. FIG. 6 is a perspective view showing the pallet leveling device 5 in which the direction in which the pallet is moved in the pallet washing line 1 is the front side of the drawing. FIG. 7 is a perspective view showing the pallet leveling device 5 in which the direction in which the pallet is moved in the pallet cleaning line 1 is taken in the depth direction of the drawing. As shown in FIGS. 6 and 7, the pallet leveling device 5 includes an unstacker unit 60, a cover 51, and a blowing means 52.

The unstacker unit 60 is configured by a device that separates the pallets P. An apparatus called a so-called unstacker for separating pallets is well known. The unstacker unit 60 of the present embodiment may be any device as long as it is a device capable of separating pallets, and may be configured by a known unstacker. The unstacker unit 60 constitutes a frame of the pallet spreading device 5. As shown in FIG. 6, the unstacker unit 60 supports a plurality of pallets P that are separated. Details of the unstacker unit 60 will be described later with reference to FIG.

The cover 51 is provided in the unstacker unit 60 constituting the frame of the pallet spreading device 5 so as to surround at least a part of the side and upper side of the pallet P supported by the unstacker unit 60. Specifically, the cover 51 is provided so as to surround the side and upper side of the stacked pallet P supported by the unstacker unit 60, and includes a fixing unit 51a, a door unit 51b, and a hinge 51d. .

The cover 51 may be made of any material as long as it can enclose the stacked pallets P supported by the unstacker unit 60, but is made of a material having heat insulating properties and heat retaining properties. More preferably. The cover 51 may be made of a corrugated cardboard made of synthetic resin (for example, plastic), for example.

Further, the cover 51 may be attached to the frame of the pallet spreading device 5 by any means. For example, when the frame of the pallet spreading device 5 is made of a magnetic material such as iron, a magnet is fixed to the cover 51, and the cover 51 is attached to the frame of the pallet spreading device 5 by the magnetic force of the magnet. It is good to do. In this case, the cover 51 can be easily attached and removed.

The fixing unit 51a is fixed to the unstacker unit 60 that constitutes the frame of the pallet spreading device 5. The hinge 51d is provided on the fixed portion 51a with the vertical direction as the axis. The hinge 51d is a component that connects another member to the member to which the hinge 51d is fixed so as to be rotatable or swingable about the axis. Depending on the shape of the unstacker employed in the unstacker unit 60 of the pallet stacking device 5, the hinge 51 d may be provided in the unstacker unit 60 constituting the frame of the pallet stacking device 5.

As shown in FIG. 7, the door portion 51b is connected to the fixed portion 51a via the hinge 51d so as to be rotatable about the axis of the hinge 51d. And the door part 51b is a part of the side of the pallet P supported by the unstacker part 60, Comprising: It can open | release the receiving direction (paper surface front direction in FIG. 7) which receives the stacked pallets P. Open and close.

The operation of the door 51b will be specifically described. The stacked pallets P are received by the receiving unit 65 in order to be separated in the unstacker unit 60. The receiving part 65 is comprised by the chain conveyor, for example. The receiving unit 65 moves the stacked pallets P from the receiving direction toward the unstacker unit 60. As shown in FIG. 7, since the stacked pallets P are moved from the outside of the enclosure by the cover 51 while pushing the door 51b, the door 51b is opened by rotating around the axis of the hinge 51d. Is done. Thereby, it is possible to receive stacked pallets without providing a power source for opening and closing the door 51b.

The hinge 51d includes a restoring member that generates a restoring force that closes the door 51b when the door 51b is opened. Accordingly, the door 51b can be closed after the stacked pallets P are received inside the enclosure by the cover 51 without providing a power source for closing the door 51b. In addition, in the hinge 51d, the speed at which the door 51b is closed can be adjusted by adjusting the restoring force of the restoring member with respect to the weight of the door 51b. Therefore, it is possible to adjust the time from when the door portion 51b is opened until it is closed so that the time for ventilation of the space surrounded by the cover 51 is provided. Instead of including the restoring member in the hinge 51d, for example, by providing a part having a restoring force such as a rubber string so as to connect the door part 51b and the fixing part 51a, the opened door part 51b is provided. It is good also as realizing the function to close.

Also, the cover 51 further includes a discharge part 51c for discharging the pallet P that has been separated. The discharge part 51c is comprised as an opening part in the fixing | fixed part 51a of the cover 51, for example, as FIG. 6 shows. Moreover, the discharge part 51c is good also as being configured as a notch in the fixing part 51a of the cover 51. In other words, the discharge unit 51c may be configured in any shape as long as it is possible to discharge the separated pallets P one by one.

The air blowing means 52 is a device that sends air toward the pallet P supported by the unstacker unit 60. The air blowing means 52 is configured by a device such as a blower, for example. In the example shown in FIGS. 6 and 7, the air blowing means 52 is provided below the unstacker unit 60 and sends air upward.

The blower 52 includes a heat source for heating the air and a blower that sends out the air heated by the heat source as hot air, like the blower 32 of the pallet stacking apparatus 3. It is good as well. Since the air blowing means 52 includes the heat source and the air blowing unit, the heated air is sent toward the stacked pallets, so that drying or thawing of the stacked pallets is further promoted. The

Next, the stacker unit 40 of the pallet stacking device 3 and the unstacker unit 60 of the pallet stacking device 5 will be described with reference to FIG. Since the stacker unit 40 and the unstacker unit 60 can be configured by the same device by adjusting the operation timing of the components, the stacker unit 40 and the unstacker unit 60 will be described with reference to one drawing.

Devices such as the stacker and unstacker constituting the stacker unit 40 and the unstacker unit 60 are well-known devices in the technical field to which the present invention belongs. The stacker unit 40 and the unstacker unit 60 described in the present embodiment are examples of devices applicable to the present invention, and other than the stacker unit 40 and the unstacker unit 60 described in the present embodiment. It does not exclude the application of the configuration.

The stacker unit 40 / unstacker unit 60 includes support units 41 and 61, lifter units 42 and 62, and frame body units 46 and 66. The lifter units 42 and 62 include mounting units 43 and 63 and pallet moving units 44 and 64.

The support portions 41 and 61 are portions that support one or more stacked pallets P. Specifically, the support portions 41 and 61 are portions that support the lowest pallet of one or more stacked pallets at a predetermined height. The support portions 41 and 61 are inserted into the four fork insertion holes P4 in the pallet to support the pallet P. For example, two sets of four rod-shaped members are positioned at predetermined heights in the frame body portions 46 and 66. In FIG. 3, the pair is arranged to face each other so as to extend along the horizontal direction. Therefore, in the stacker unit 40 / unstacker unit 60, the pallet P is arranged so that the extending direction of the fork insertion hole P4 is along the extending direction of the rod-shaped members of the support units 41 and 61.

The rod-shaped members constituting the support portions 41 and 61 are provided so as to be reciprocally movable between a first position and a second position along the extending direction by a predetermined driving means (not shown). . The predetermined driving means may be any one of a driving mechanism using hydraulic pressure, a driving mechanism using electric power, and the like. In the first position, the support portions 41 and 61 are such that the distance between the tip portions of the opposing rod-shaped members is the length of one side of the upper surface of the substantially quadrangular shape of the pallet P stacked in the stacker portion 40 / unstacker portion 60. It is arranged and driven to be smaller than this. Further, in the second position, the support portions 41 and 61 are arranged such that the distance between the tip portions of the opposing rod-like members is one side of the upper surface of the substantially quadrangular shape of the pallet P stacked in the stacker portion 40 / unstacker portion 60. It is arranged and driven so as to be larger than the length of. By arranging and driving the support portions 41 and 61 in this way, the support portions 41 and 61 support the pallet P stacked in the first position, and the pallet P stacked in the second position. Can release support.

In the stacker unit 40, the lifter unit 42 includes a mounting unit 43 on which pallets to be stacked are mounted. The lifter unit 42 is provided below the support unit 41 and mounts the pallets received one by one on the mounting unit 43. The pallets P are stacked while being raised and supported by the support portion 41.

In the unstacker unit 60, the lifter unit 62 includes a mounting unit 63 on which the pallet P is mounted, is provided below the support unit 61, and is one of a plurality of pallets P supported by the support unit 61. By lowering the pallet P while placing the pallets on the placing portion 63, the stacked pallets are separated.

The lifters 42 and 62 have drive means (not shown) for moving the mounting parts 43 and 63 up and down so that the pallets mounted on the mounting parts 43 and 63 can be moved up and down. This drive means may be any drive system such as a hydraulic type and an electric type.

As shown in FIG. 8, the frame body portions 46 and 66 are, for example, framed by four columnar members arranged at the positions of the apexes of a substantially square when viewed from above, and beam members that connect the columnar members to each other. Is formed. The substantially square formed by the four beam members of the frame portions 46 and 66 has a size sufficient to receive the pallet P. In addition, lifter portions 42 and 62 are provided in the frame.

In the stacker unit 40, the pallet moving unit 44 is a device that receives the pallets to be stacked in the frame body unit 46 and arranges them on the mounting unit 43 of the lifter unit 42. In the unstacker unit 60, the pallet moving unit 64 is a device that discharges the pallets that are separated and mounted on the mounting unit 63 to the outside of the frame body unit 66. The movement of the pallet, such as receiving and discharging the pallet, is realized by, for example, a chain conveyor provided in the pallet moving units 44 and 64. The chain conveyor is configured to be able to move the placed pallet.

Subsequently, the shapes of the mounting portions 43 and 63 of the lifters 42 and 62 will be described with reference to FIG. When the air blowing means 32 and 52 are provided below the lifters 42 and 62 and configured to blow air upward, the placement portions 43 and 63 are openings on the lower surface of the placed pallet P. You may have a shape so that at least one part of the part P7 may be exposed. Specifically, the placement parts 43 and 63 may have a shape in which

openings

43a and 63a are provided at positions corresponding to the openings P7 of the placed pallet P.

Since the mounting portions 43 and 63 have such a shape, the mounting portions 43 and 63 of the lifters 42 and 62 do not block the air sent from below, so that the air is sent to the opening P7 on the lower surface of the pallet P. The air that has been applied will be hit. The air applied to the opening P7 on the lower surface of the pallet passes through the fork insertion hole P4 on the side surface of the pallet P or the hole of the cut portion P6 on the upper surface of the pallet P, and goes to the pallet P stacked upward. Further, when the pallet is not placed on the lifters 42 and 62, the placing parts 43 and 63 and the pallet P do not block the upward air, so that air is applied to the stacked pallets P. Become. Therefore, drying or thawing of the stacked pallets is facilitated.

As described above, in the pallet stacking apparatus 3 of the present embodiment, since the pallets P are sequentially received and stacked one by one, the pallets P are stacked until a certain number of sheets are stacked and discharged. The pallet stacking apparatus 3 stays for a certain period of time while being stacked. Then, at least a part of the side and upper side of the stacked pallets P is surrounded by the cover 31, and air is sent toward the pallet P while the pallet P stays in the space surrounded by the cover 31. Therefore, when the stacked pallets P have moisture, the pallets P can be dried. If the stacked pallets P are frozen, the pallets can be thawed.

Further, in the pallet destacking device 5 of the present embodiment, the stacked pallets P are sequentially delineated one by one, so that the pallets P are accepted one by one when the stacked pallets P are received. In the meantime, the pallet spreading device 5 stays in a stacked state for a certain period of time. Then, at least a part of the side and upper side of the stacked pallets P is surrounded by the cover 51, and air is sent toward the pallet P while the pallet P stays in the space surrounded by the cover 51. Therefore, if the stacked pallets P have moisture, the pallets can be dried. If the stacked pallets P are frozen, the pallets P can be thawed.

The present invention has been described in detail above based on the embodiments. However, the present invention is not limited to the above embodiment. The present invention can be variously modified without departing from the gist thereof.

DESCRIPTION OF SYMBOLS 1 ... Pallet washing line, 3 ... Pallet stacking device, 5 ... Pallet spreading device, 7 ... Pallet washing device, 9 ... Pallet moving part, 31 ... Cover, 31a ... Fixed part, 31b ... Door part, 31c ... Receiving part , 31d ... hinge, 32 ... air blowing means, 40 ... stacker part, 41 ... support part, 42 ... lifter part, 43 ... mounting part, 43a ... opening, 44 ... pallet moving part, 45 ... discharge part, 46 ... frame 51, cover, 51a ... fixing part, 51b ... door part, 51c ... discharge part, 51d ... hinge, 52 ... air blowing means, 60 ... unstacker part, 61 ... support part, 62 ... lifter part, 62 ... support part , 63... Placement part, 63a... Opening, 64... Pallet movement part, 65.

Claims

A support for supporting one or more pallets stacked;
Including a placing portion on which pallets to be stacked are placed, and the pallet is lifted while placing the pallets received one by one on the placing portion, while being placed on the placing portion. Lifters stacked by supporting the support part;
A pallet stacking device having a discharge section for discharging a plurality of stacked pallets,
A cover provided on the frame of the pallet stacking apparatus so as to surround at least a part of the side and upper side of the pallet supported by the support part;
A blowing means for sending air toward the pallet supported by the support part;
Pallet stacking device comprising.
The cover is
It is provided so as to surround the side and upper side of the pallet supported by the support part,
A fixed portion fixed to the frame of the pallet stacking apparatus;
A hinge provided on the frame body or the fixed portion and having a vertical axis as an axis;
It is connected to the frame body or the fixed part via the hinge so as to be rotatable around the axis, and is a part of the side of the pallet supported by the support part, and the pallet is discharged by the discharge part. Including a door part that opens and closes so that the discharge direction can be opened,
The pallet stacking apparatus according to claim 1.
The hinge includes a restoring member that generates a restoring force that closes the door when the door is opened,
The pallet stacking apparatus according to claim 2.
The blowing means is provided below the lifter and blows upward.
The mounting portion of the lifter has a shape such that at least a part of the opening on the bottom surface of the placed pallet is exposed
The pallet stacking apparatus according to any one of claims 1 to 3.
The blowing means includes a heat source for heating the air, and a blowing unit that sends out the air heated by the heat source as hot air,
The pallet stacking apparatus according to any one of claims 1 to 4.
A receiving part for receiving a plurality of stacked pallets;
A support portion that is received by the receiving portion and supports a plurality of stacked pallets;
The pallet includes a placement part on which the pallet is placed, and is placed under the support part and is placed on the placement part by placing one pallet of the plurality of pallets supported by the support part. A pallet leveling device having a lifter for leveling by lowering,
A cover provided on the frame of the pallet spreading device so as to surround at least a part of the side and upper side of the pallet supported by the support part;
A blowing means for sending air toward the pallet supported by the support part;
Pallet leveling device comprising.
The cover is
It is provided so as to surround the side and upper side of the pallet supported by the support part,
A fixing part fixed to the frame of the pallet stripping device;
A hinge provided on the frame body or the fixed portion and having a vertical axis as an axis;
It is connected to the frame body or the fixed part via the hinge so as to be rotatable about the axis, and is a part of the side of the pallet supported by the support part, and the pallet is received by the receiving part. Including a door portion that opens and closes so that the receiving direction can be opened,
The pallet spreading apparatus according to claim 6.
The hinge includes a restoring member that generates a restoring force that closes the door when the door is opened,
The pallet spreading apparatus according to claim 7.
The blowing means is provided below the lifter and blows upward.
The mounting portion of the lifter has a shape such that at least a part of the opening on the bottom surface of the placed pallet is exposed
The pallet spreading apparatus according to any one of claims 6 to 8.
The blowing means includes a heat source for heating the air, and a blowing unit that sends out the air heated by the heat source as hot air,
The pallet spreading apparatus according to any one of claims 6 to 9.