JP2000213864A - Pallet-drying system and pallet-dewatering device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To miniaturize a facility and to save energy by providing a pallet drainage rotary means at the upper portion of a pallet-stopping position of a carrier conveyor and providing an air-blowing means at the rotary shaft. SOLUTION: A pallet drainage rotary means and a pallet supply means are provided with an air-blowing means 60 for blowing air to an area near the rotary center of a pallet 2. In this case, in the air-blowing means 60, a pallet draining rotary means 26 is provided as an air passage 65, a compression air supply pipe 62 is connected to the upper end part via an air rotary joint 61, a solenoid valve 63 that is provided at the compression air supply pipe 62 is turned on or off, and compression air from a supply source can be supplied to the air passage 65, thus achieving drying quickly and enabling a facility to save energy.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pallet drying system and a pallet dehydrating apparatus for drying a flat box-shaped body represented by a pallet used for truck transportation and the like.

[0002] In general, a "pallet" is a thin, square or rectangular box-and-plate body which is mainly used for loading and unloading regular-sized luggage in truck transportation or the like so that it can be easily handled by a lift truck. In the configuration of the present invention, the “pallet” includes not only the general pallet described above but also a pallet having a shape similar to a pallet such as a plastic carton case. If it is a thing, it shall include all the goods, and the "pallet drying system" or "pallet dewatering device" according to the present invention is not limited to the above-mentioned general pallets, but is also used for rotating and draining using centrifugal force. A drying system or a dewatering device for an article suitable for the operation is included in the technical scope.

[0003]

2. Description of the Related Art Conventionally, most pallets used for truck transportation and the like are made of wood.
Plastic pallets have come to be used frequently for their durability. The pallets are often stored outdoors, and the pallets deposited outdoors are washed and used. Therefore, a pallet drying system and a pallet dehydrator for drying a flat box-shaped body represented by a pallet or the like used for truck transportation and the like after washing are required.

[0004] Plastic pallets tend to be considered easier to dry than wooden pallets.
The structure is such that water easily accumulates in the pallet, and if it is used carelessly just because it is superficially dry, water will come out due to the handling of the pallet and products such as cardboard on the pallet There are many fears that wetting the case and lowering the product value. In order to avoid this, a pallet has been conventionally ragged. However, there is a problem that water accumulated in the gap cannot be eliminated. Therefore, recently, a drying means for drying the pallet by applying hot air to the pallet using a hot air dehydrator has been used.

[0005]

The means for hanging a pallet on a pallet requires a lot of labor and time, and the water accumulated in the gap cannot be eliminated. Means of drying by applying hot air to pallets requires a large amount of equipment such as a hot air chamber for accommodating a large number of pallets, a hot air stove for heating air, a hot air fan, and temperature control of hot air for drying efficiency. There was a problem that energy was used and a drying time of 5 minutes or more was required for each piece.

[0006]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a dewatering chamber at a pallet stop position of an intermittently moving transport conveyor, and a pallet draining rotating means for rotating a pallet to remove water by centrifugal force in the dewatering chamber. An object of the present invention is to provide a pallet drying system characterized in that an air blowing means for blowing air is provided near the center of rotation of the pallet. According to the pallet drying system according to the present invention, the pallet draining / rotating means has a configuration in which the pallet is rotated to remove water by centrifugal force. According to the test results of the inventors, according to the test results of the inventors, the pallet can be blown to water within a few seconds to several tens of seconds, and even to a low speed within 1 minute. Water, including the vicinity of the center of rotation, is then scattered and removed. After that, the pallets can be naturally dried while being transferred, and can be sufficiently drained within one minute even at low speed rotation. It can be dried in a much shorter time, and the equipment can be provided with a dehydration chamber that only contains one pallet and rotates. Energy, no need for thermal temperature control, can be dehydrated immediately with a single switch when needed, is not affected by the weather unless the water freezes, and removes attached dust by centrifugal force There is an excellent action that can be performed. Incidentally, the pallet drainer rotating means, without being limited to the configuration of the embodiment described later, those that rotate the pallet while maintaining the horizontal on substantially the same plane as the conveyor, those that rotate horizontally below the conveyor, The one that rotates horizontally above the conveyor, the one that rotates with the pallet surface crossing the conveyor, the one that rotates on a vertical surface, the one that stores the pallet in the rotating drum and rotates the rotating drum Those that rotate with it also belong to the technical scope of the present invention.

According to the present invention, there is provided a pallet drying system according to the first aspect, further comprising pallet draining rotating means for rotating the pallet above the pallet stop position of the transport conveyor to drain the pallet, and rotating the pallet draining rotating means. An object of the present invention is to provide a pallet drying system characterized in that a shaft is provided with air blowing means. At the pallet stop position of the conveyor, the configuration in which the air blowing means is provided on the rotation axis of the upper pallet draining rotating means allows air to be reliably blown to the rotation center of the pallet, and the rotating axis of the pallet draining rotating means By using them together, the structure of the air blowing means can be simplified.

Further, according to the present invention, in the pallet drying system according to the first or second aspect, the pallet is lifted from the transport conveyor below the pallet stop position of the transport conveyor and the pallet is rotatably supplied to the pallet draining rotating means. A pallet drying system is provided, in which pallet supply means is provided, and air blowing means is provided on a rotating shaft of the pallet supply means. By lifting the pallet from the conveyor and rotating the pallet, and draining the water by means of air blowing means provided on the rotating shaft, the pallet drainer is displaced upward irrespective of the plane position of the conveyor. The pallet rotates at its own position, and the pallet can be transported to the dewatering chamber by transporting the pallet to the dewatering chamber and then unloaded after dehydration. Can be drained.

Further, the present invention includes a pallet drainer rotating means for rotating the pallet at a pallet stop position of the conveyor to cut off water by centrifugal force, and an air blowing means for blowing air near the center of rotation of the pallet. Another object of the present invention is to provide a pallet dewatering apparatus characterized in that: According to the pallet dewatering apparatus according to the present invention, the pallet draining / rotating means rotates the pallet to cut off water by centrifugal force, and blows air near the center of rotation of the pallet to the position where the centrifugal force can act. As described above, if the rotation speed is high,
Within a few seconds to a dozen seconds, even at a low speed, within one minute, the water on the pallet can be scattered and removed. Can be dried in a much shorter time than before so that draining can be done sufficiently, and the equipment is much smaller because it only needs to provide space for one pallet to rotate. Compared to hot air drying, it saves energy, does not require heat temperature control, can be immediately dehydrated with a single switch when needed, and is not affected by the weather unless water freezes, and adheres There is an excellent action such that dust can be removed by centrifugal force. The pallet draining and rotating means according to the first or fourth aspect of the present invention is not limited to the configuration of the embodiment and the like described later. Rotating, rotating horizontally below the conveyor, rotating horizontally above the conveyor, rotating at an angle where the pallet surface intersects the conveyor, rotating on a vertical surface The pallet stored in the rotating drum and rotating with the rotation of the rotating drum also belong to the technical scope of the present invention.

According to a fourth aspect of the present invention, in the pallet dewatering apparatus according to the fourth aspect, the pallet draining rotating means provided above the pallet stop position of the transport conveyor, and the pallet draining rotating means lifting the pallet on the transport conveyor. Pallet supplying means for holding the pallet together with the pallet draining rotating means, rotating the pallet, supporting the pallet after rotation is stopped, and placing the pallet on a conveyor, and pallet draining rotating means and / or pallet supplying means The present invention provides a pallet dewatering device including air blowing means for blowing air near the center of rotation of the pallet provided in the pallet. According to the pallet supply means of the present invention, the pallet on the transport conveyor is lifted and pressed against the pallet draining rotating means so as to be rotatable, and the pallet is held and rotated together with the pallet draining rotating means,
After the rotation is stopped, the pallets are supported and placed on the conveyor, so not only can the pallets be supplied to the pallet drainer rotating means provided above the conveyor, but also the pallets can be held and rotated together with the pallet drainer. By doing so, there is an effect that the pallet can be reliably held during the rotation operation, and the centrifugal force can be reduced by the air blowing means for blowing air near the center of rotation of the pallet provided in the pallet draining rotation means and / or the pallet supply means. The pallet can be quickly dewatered including the vicinity of the rotation center of the pallet, which hardly works. Further, the present invention provides a pallet dewatering apparatus according to claim 4 or 5, wherein an air blowing means is provided on a rotating shaft of the pallet supply means. By providing the air blowing means on the rotating shaft of the pallet supply means, it is possible to provide a structure in which dehydration is easily performed structurally including the vicinity of the center of rotation on the lower surface of the pallet.

According to a fourth aspect of the present invention, in the pallet dewatering apparatus according to the fourth aspect, the pallet drainer rotating means is integrally provided with a pallet separation preventing case which rotates together with a rotating shaft interlocked with a drive motor. An object of the present invention is to provide a pallet dewatering apparatus characterized in that an air blowing means is provided on a shaft. According to this configuration, the pallet supplied by the pallet supply unit is received by the pallet detachment prevention case, and the pallet is rotated centrifugally by the drive motor, and is reliably removed including the vicinity of the rotation center without detaching the pallet by the air blowing unit of the rotating shaft. Can be rotated to drain.

[0012] The present invention is directed to claims 4,
In the pallet dehydrating apparatus according to 5, 6, or 7, the pallet supply means includes an elevating device, an elevating platform which is elevated by the elevating device, a bearing platform supported by the elevating platform via spring elastic means, An object of the present invention is to provide a pallet dewatering apparatus characterized by comprising a rotating shaft rotatably supported and a pallet support fixed to the rotating shaft. According to this configuration, since the bearing base that supports the rotating shaft of the pallet support base of the pallet supply unit is supported by the elevating platform that is moved up and down by the elevating device via the spring elastic means, the pallet is rotated by pallet draining. When pressed against the means and supported rotatably, a stable contact pressure can be obtained by the spring elasticity, and it can be held safely, and absorbs the rotational vibration at the time of draining operation in which rapid rotation and sudden stop. Therefore, there is an operation and effect that a stable draining operation can be performed. The spring elastic means of the lift table is not limited to a rubber elastic means or a spring means using a spring member such as a coil spring, but also includes a pneumatic elastic means.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the illustrated embodiments. First, the pallet drying system of the present invention will be described. In FIG. 1, reference numeral 1 denotes a pallet supply unit of a pallet drying line, and a plurality of pallets 2 stacked and transported on a transport conveyor (not shown) are adjusted to an appropriate height. It is placed on the. The pallet supply unit 1 sends the pallets 2 one by one to the next individual mounting table 3,
The lifting member 5 lifts the second pallet 2 by supporting the second pallet 2 synchronously from both sides with respect to the piles of the pallets 2 stacked along the pallet feeding direction shown in FIG. With the extruding device described above, the pallet 2 at the bottom is sequentially mounted on the individual mounting table 3.

In the case of the embodiment, the front and back of the pallet 2 are determined, and the pallet 2 on the individual mounting table 3 is configured so that the front and back of the pallet 2 can be identified by the upper CCD camera 6. Reference numeral 7 denotes a pallet reversing machine, which reverses the pallet 2 sent from the individual mounting table 3 when the pallet 2 is turned upside down. That is,
The pallet reversing machine 7 accommodates the pallet 2 sent from the individual mounting table 3 in the middle of the upper and lower frames 8 and
180 ° only when pallet 2 is turned inside out
It is configured to rotate. As described above, in the embodiment, for example, when the pallet 2 is made of a pallet specialized for the load to be placed, and the shape of the front and back is different, the pallet is used for subsequent washing, drying, transport, use, and the like. The structure is reversed to suit the operation.

Reference numeral 9 denotes a pallet sorter, which sorts pallets other than the pallets to be washed and dried by this system by means of a CCD camera 6 or the like not shown in the drawing.
It is configured to transfer the pallet to another pallet transport conveyor installed on the side, also omitted in the figure. As mentioned above,
Even if the front and back sides are discriminated by the individual mounting table 3 and reversed by the pallet reversing machine 7, it is not a pallet to be processed by this washing / drying system. For example, pallets having different shapes on both sides and wooden pallets having the same shape are used. If pallets of different materials such as are mixed, transfer them to other processing steps.
The pallet sorter 9 is configured to transfer a different pallet while leaving an appropriate pallet.

Reference numeral 10 denotes a pallet washing machine, which is configured to wash the pallets 2 sent from the pallet sorting machine 9 by an intermittently moving conveyor. Pallet washing machine 1
Within 0, the spray nozzle of washing water, washing water and rotating brush,
In the sprayer or the spray brush which rotates by the spray of the wash water,
Necessary items are appropriately provided, and the pallet is configured to be able to be washed while being placed on a conveyor.

Numeral 11 denotes a pallet dehydrator which is the core of the pallet drying system of the present invention. In the case of the embodiment, the pallet after being washed by the pallet washer 10 is intermittently moved by a transport conveyor and dehydrated to a stop position. A pallet draining rotating means for rotating the pallet in the dewatering chamber to remove water by centrifugal force is provided, and an air blowing means for blowing air near the rotation center of the pallet with less centrifugal force is provided. . In addition, near the entrance in the dehydration chamber, a dust removing means including a rotating brush or the like rotating with the pallet after washing moved by the transport conveyor is provided, and it is possible to wash trash etc. remaining on the pallet surface. It is also possible to configure so that it can be performed.

Further, as another embodiment, a washing means can be provided in the dewatering chamber of the pallet dewatering device. As the cleaning means, a form in which the pallet is carried into the dehydration chamber and is washed with water in a state where the pallet is placed on the conveyor, and the pallet is washed in the same manner as in the previous pallet washing machine, or by a supply means of the cleaning water, Various cleaning means such as a form in which the pallet rotating at an appropriate number of rotations by the pallet draining rotating means can be used to wash the pallet in the dehydration chamber can be used. If stopped, dehydration can be continued. Therefore, by providing the pallet cleaning means in the dehydration chamber, in the pallet dehydrator, washing and dehydration can be performed continuously in the same dehydration chamber, and the cleaning device and the dehydration device Need not be provided separately, the pallet drying system can be further downsized, and the drying process can be streamlined.

According to the pallet drying system according to the present invention, the pallet draining / rotating means rotates the pallet to drain water by centrifugal force, and supplies air to the vicinity of the center of rotation of the pallet where the centrifugal force does not work so much. Since it has a structure in which air blowing means is provided for blowing, the water on the pallet is scattered and removed within a few seconds to ten and several seconds at a high speed rotation and within one minute even at a low speed rotation. Can be dried naturally enough
The purpose of pallet drying can be achieved in a much shorter time than before, so that sufficient drainage can be achieved within 1 minute even at low speed rotation. It is much smaller because it only needs to be provided, it is energy saving compared with hot air drying, heat temperature control is unnecessary, and the pallet can be rotated and dewatered immediately with one switch when needed, and the water does not freeze As long as it is not affected by the weather, there is an excellent action and effect that dust attached to the pallet or on the surface can be removed by centrifugal force.

Reference numeral 12 denotes a pallet discharge unit provided next to the pallet dewatering device 11 of the pallet drying system according to the present invention. The pallets 2 are stacked at an appropriate height and can be placed. The pallet discharge unit 12 is, as opposed to the pallet supply unit 1, individually one-by-one from the immediately preceding pallet dewatering device 11.
In order to stack pallets 2 sent out one by one,
Lifting members 14 from both sides with respect to the piles of pallets 2 stacked along the pallet feeding direction indicated by arrow 13
Synchronously supports the lowermost pallet 2 and lifts it to the second or higher level. The dehydrated pallets sent by the conveyor not shown in FIG. 2 are sequentially moved to the lowermost pallet position. It is configured to be mounted on the. Then, when they are stacked at an appropriate height, they are sent to the next conveyor.

Next, the structure of the pallet dewatering apparatus 11 according to the present invention will be described in detail with reference to the embodiments shown in FIGS. 2, 3 and 4. Reference numeral 15 denotes a conveyor 16 which moves intermittently in a pallet drying system. Are four columns constituting a dehydration chamber provided at a pallet stop position with a transport conveyor 16 provided therebetween. Each support 15 has a dividing part 17 above the pallet 2 on the conveyor 16, and is provided so as to be able to be divided vertically by the dividing part 17. Each support 15 is provided with a horizontal girder frame material 18 on both sides along the feeding direction of the transport conveyor 16.
a, 18b, 18, c, 18d and 18e, near the bottom, at the height of the conveyor, above the division, at the upper middle,
Each of the cross members 19a, 19b and 1 is provided on both sides perpendicular to the feed direction of the conveyor 16 while being provided at the top.
9c is provided near the bottom, at the upper middle, and at the top. In addition, the horizontal girder frame material 18 of the upper middle part and the top part
Two supporting girder members 20 and 21 are provided at regular intervals in the center between the d and 18e, and intersect with the supporting girder members 20 and 21 between the upper middle portion and the top cross beam frame members 19d and 19e. Are two support beam members 2 at regular intervals at the center.
2, 23 are provided. Bearing members 24 and 25 are vertically attached to the support beam members 20 and 21 and the support beam members 22 and 23 that intersect at the center.

The rotating shaft 26 of the pallet drainer rotating means according to the present invention is also rotatably supported on the bearing members 24 and 25 in the vertical direction by receiving the supporting force in the thrust direction. At the intermediate portion of the rotating shaft 26, a small pulley 27 constituting a differential transmission means with the drive motor is provided integrally. On the other hand, the drive motor 28 includes the clutch and the brake mechanism 2.
9, a large pulley 30 is provided on the drive shaft, and the small pulley 27 is rotated via a belt 31 at an increased speed. It should be noted that the belt-pulley type differential transmission means is one embodiment, and various conventionally known configurations including other gear transmission means, friction wheel transmission means, and combinations thereof may be appropriately adopted. it can. In some cases, the rotary shaft 26 can be directly driven to rotate via a clutch and a brake mechanism 29 or by a geared motor without using a differential transmission means. It is also possible to adopt a configuration in which the number of rotations is made variable by a mechanism and transmission is performed.

A pallet detachment prevention case 32 is integrally provided at the lower end of the rotating shaft 26. In the case of the embodiment, the pallet 2 is, for example, formed in a rectangular shape such as 900 mm × 1100 mm, and is placed on the conveyor 16 with the long side along the moving direction and the short side in the moving direction. Correspondingly, the pallet separation prevention case 32 is
Is configured to be received from above. In the case of the illustrated embodiment, the pallet separation prevention case 32 is
Arm members 33, 34 provided horizontally in a cross shape around the center 6
And one of the long arm members 33 and the one of the anti-separation pieces 35 grips the center of the short side of the pallet 2, The short arm member 34 and the separation preventing piece 36 grip the center of the long side of the pallet 2, thereby holding the pallet 2 so as not to be separated in the side direction by the rotation, and cleaning the pallet 2 by the rotation of the pallet 2. As a result, the water attached to the pallet flows in the diagonal direction of the rectangular pallet 2 and scatters. In addition, the pallet separation prevention case 32
Is composed of a frame having the same shape as the pallet 2 and having an open bottom, and a side face provided with a drainage hole or the like through which washing water, such as a wire mesh, is scattered, or a rectangular or square pallet having arms along diagonal lines. It is possible to adopt various frame structures, such as a frame body in which the frame portion excluding the corners of the four corners is sandwiched by the members, such as a frame body that is open at the bottom and has a drain hole on the side. .

A water receiving frame 37 for the dewatering chamber is provided on the outer periphery of the pallet separation preventing case 32 in the centrifugal direction.
In the case of the embodiment, the water receiving frame 37 is formed in a cover plate shape that covers the periphery of the pallet detachment prevention case 32, and is configured such that the scattered water falls downward along the inside of the water receiving frame 37. . As the water receiving frame 37, when positioned on the side surface of the conveyor 16, the water receiving frame 37 can be configured to integrally cover up to the vicinity of the horizontal girder frame portion 18 a near the bottom along the column 15. On the pallet 2 side, a mounting member 38 provided on the upper part of the dividing portion 17 to allow the pallet 2 to pass therethrough allows a rubber member or other elastic member 39 made of a relatively elastic flexible member to be attached. It is attached so that it can be evacuated. It is of course possible to provide a ceiling plate on the cross beam member 19c and the cross beam member 18d above the pallet detachment prevention case 32, avoiding the rotary shaft 26 or the bearing member 24.

On the other hand, below the pallet stop position of the transport conveyor intermittently moving in the pallet drying system, the pallet on the transport conveyor can be lifted and rotated with respect to the pallet draining / rotating means provided above the pallet stop position. Pallet supply means for holding and rotating the pallet together with the pallet draining and rotating means, supporting the pallet after the rotation is stopped, and placing the pallet on a transport conveyor. The pallet supply means includes a lifting device 40 and a lifting device 4
0, a bearing table 43 supported by the lifting table 41 via a spring elastic means 42, and a bearing table 4
The rotating shaft 44 is rotatably supported by the rotating shaft 3 and a pallet support 45 fixed to the rotating shaft 44. Lifting device 4
Numeral 0 is a parallel movement mechanism or the like that moves up and down in parallel by an operating member that expands and contracts by hydraulic pressure or air pressure.

In the case of the embodiment, the cross beam member 1 near the bottom is used.
A base cross beam member 46 and a base cross beam member 47 are provided to cross each other between 8a and the cross beam member 19a, and a rectangular base 50 is integrally fixed thereon. In the case of the embodiment, the lifting device 40 provided between the base table 50 and the lifting table 41 is, as shown by a broken line, one of the links 48, 49 of the same length which pivotally opens and closes a central intersection. The base end portion 51 is pivotally attached to the base table 50, and the distal end portion 52 is movably fitted in a horizontal groove, not shown in the drawing, provided on the elevating base 41 so as to be movable in the horizontal direction. Is horizontally movably fitted in a horizontal groove provided in the base table 50, and the distal end portion 52 is pivotally connected to the elevating table 41, and expands and contracts by hydraulic pressure or air pressure provided between the links 48 and 49. The operating member is constituted by a parallel movement mechanism in which the elevating table 41 moves up and down in parallel. However, this is only an example, and the elevating table 41 is guided vertically by a guide bar vertically erected with respect to the base table 50. Elevating platform by operating member that expands and contracts by hydraulic or pneumatic pressure
Various known parallel elevating devices can be appropriately employed, such as a configuration in which the device 1 moves up and down in parallel while maintaining the horizontal position.

The bearing base 4 is elastically resilient to the lifting base 41.
As the spring elastic means for supporting the lifting table 3, three or more coil springs 53 are arranged so that the respective springs receive the load evenly around the rotating shaft 44 with respect to the elevating table 41. Can be supported.
Also, for example, the bearing base 43 may be formed by two or more guide bars.
Can be configured to have a stable guide mechanism so as to be able to move up and down while maintaining the horizontal position. In this case, the guide bar is erected at the center of the coil spring 53 to measure the expansion and contraction of the coil spring 53 uniformly. be able to. As the spring elastic means, a pneumatic elastic means using an air cylinder can be adopted instead of or in combination with the coil spring 53. In the case of the embodiment, the bearing base 43 is composed of two bearing members 55 provided at predetermined intervals above and below by a connecting member 54 also serving as a spacer, and vertically supports the rotating shaft 44 of the pallet support base 45. It is configured as follows. In the case of the embodiment, the rotating shaft 44 has a slender bearing portion, and is supported by a bearing member 55 so as not to move in the thrust direction. The pallet support 45 is
A non-slip member 56 is integrally provided on the upper surface of the pallet so that the pallet can be supported in close contact with the pallet bottom surface without slipping. The pallet detachment prevention case 32 may be configured as a pallet upper gripper or a nail, and the pallet support 45 may be configured as a pallet lower gripper or a nail.

Here, in the pallet dewatering apparatus according to the present invention, as shown in FIG. 4, an air blowing means 60 for blowing air near the center of rotation of the pallet 2 is provided in the pallet draining rotating means and / or the pallet supplying means. It is.
In the case of the embodiment, the air blowing means 60 is provided with a rotary shaft 26 of the pallet drainer rotating means in a hollow shape.
6 is provided as an air passage 65, and a compressed air supply pipe 62 is provided at the upper end thereof via an air rotary joint 61.
Is connected to the solenoid valve 6 provided in the compressed air supply pipe 62.
3 is controlled to be ON / OFF so that compressed air from a supply source not shown in the figure can be supplied to the air passage 65. The lower end of the air passage 65 communicates with an air nozzle 64 provided in the pallet separation prevention case 32, and is configured to be able to blow onto the upper surface of the pallet rotation center.

In the case of the embodiment, the air blowing means 6
Numeral 0 is also provided on a rotary shaft 44 rotatably bearing on a bearing table 43 supported via a spring elastic means 42 on a lifting table 41 which is raised and lowered by a lifting device 40 of a pallet supply means. The rotating shaft 44 is provided in a hollow shape to form an air passage 66.
A compressed air supply pipe 68 is connected to the lower end of the air passage 66 via an air rotary joint 67, and an electromagnetic valve 69 provided in the compressed air supply pipe 68 is ON / OFF controlled. It is configured such that compressed air from the omitted supply source can be supplied into the air passage 66. The upper end of the air passage 66 communicates with an air nozzle 70 provided on the pallet support base 45, and is configured to be able to blow the lower surface of the pallet 2 at the center of rotation. Although not shown in the drawing, a rubber hose is provided between the supply source and the compressed air supply pipe 68 provided on the pallet support base 45 which is moved up and down by the elevating device 40 of the pallet supply means. Needless to say, the connection is made via a flexible connection pipe that flexibly bends up and down as in the above case. In this case, the ON / OFF control unit of the supply pipe 68 includes a solenoid valve 69 that does not move up and down. It is preferable to install on the source side.

In the configuration of the pallet dewatering apparatus 11 of the above embodiment, the pallet 2 that has entered the dewatering chamber on the transport conveyor 16 is stopped by the intermittent transport of the transport conveyor 16 or by a stop switch by the position detecting device. When the conveyor 16 is operated and stopped, or
The pallet 2 is stopped at a predetermined position by being stopped by a stopper mechanism or the like, which is omitted in the drawing. When the pallet 2 stops at a predetermined position, the lifting / lowering device 40 of the pallet supply means
The switch of the operating member, which is omitted in the figure, is turned on, and as the operating member elongates, the elevating table 41 starts to rise while maintaining the horizontal position by the parallel movement mechanism such as the links 48 and 49. When the lifting platform 41 is raised by the lifting device 40, the bearing platform 43 supported via the spring elastic means 42 is raised, and the rotating shaft 44 rotatably supported by the bearing platform 43 and the pallet support fixed to the top thereof. The platform 45 lifts the pallet 2 from above the transport conveyor 16 and the pallet detachment prevention case 3
The pallet 2 is accommodated in the pallet 2, and the pallet 2 is pressed at a predetermined pressure by the spring elasticity of the spring elastic means 42.

Here, the presence of the pallet 2 in the pallet separation preventing case 32 is detected by means for detecting the rising position of the pallet 2 or pressing force detecting means for pressing the pallet against the pallet separation case 32, which is omitted in the figure. Upon detection, the drive motor 28 is turned on and the large pulley 30
, The small pulley 27 is rotated by the belt 31 at an increased speed, the pallet detachment prevention case 32 at the lower end of the rotary shaft 26 is rotated, and the rotary shaft is rotatably supported on the bearing base 43 together with the pallet 2. The pallet support 44 fixed to the top of the pallet 2 rotates while supporting the lower portion of the pallet 2. By this rotation, water and dirt adhering to the pallet 2 after washing are scattered in the centrifugal direction.
At the same time, the solenoid valves 63 and 69 of the compressed air supply pipes 62 and 68 of the air blowing means 60 are opened, and the rotating shaft 2
The pallet separation prevention case 32 and the air nozzle 6 of the pallet support 45 from the air passages 65 and 66 of the pallet 6.
Compressed air is supplied to the pallet 4 and 70, and is sprayed on the front and back surfaces of the rotating pallet 2. Water near the center of rotation of the pallet where the action of centrifugal force is small is flushed to the place where the centrifugal force is strong. Scatter in the centrifugal direction.

The rotation time required for dehydration is 900 mm × 1
100 mm rectangular pallet, 10 rpm at 500 rpm
At 360 rpm, the processing time is about 18 seconds. After the rotation for a certain period of time, for example, by the operation of the rotation control device, the drive motor 28 is stopped, the rotation stop position or the rotation stop angle of the pallet 2 is determined, and the pallet is accurately positioned on the conveyor at the correct angle. It is configured to stop. In the case of the configuration in which the large pulley 30 is rotated by the drive motor 28 via the clutch and the brake mechanism 29, after the rotation for a certain period of time, the clutch is disengaged by the operation of the rotation control device, the brake is operated, and the pallet is moved to the predetermined position. It is configured to stop at the rotation stop position. When the rotation of the pallet is stopped, the lowering command switch of the operating member of the elevating device 40 of the pallet supply means is turned on, and the elevating table 41 starts to lower as the operating member is reduced. When the elevating table 41 is lowered by the elevating device 40, the bearing table 43 supported via the spring elastic means 42 is lowered, and the rotating shaft 44 and the pallet supporting table 45 fixed to the top thereof return to their original positions, 2 is placed at a predetermined position on the conveyor 16 in a predetermined posture. Here, the conveyor 16 is operated, the drained pallets are discharged, and the next pallet enters the apparatus at the same time. In the case where the rotation speed is 500 rpm and the rotation speed is 10 seconds, the time required for the pallet to enter and exit the apparatus is about 20 seconds.

In the above pallet dewatering apparatus,
A pallet washing means having a washing water supply means can be provided in the dehydration chamber, whereby washing and dehydration can be performed continuously in the same dehydration chamber, and the cleaning device and the dehydration device are separately provided. Since there is no need to provide, the size of the system can be reduced and the drying process can be streamlined. Note that the pallet dewatering device according to the present invention is not limited to the pallet drying system incorporated in the pallet drying system. The pallet 2 is placed on the conveyor 16 as an independent device. The pallet is transported to the installation position, the pallet is rotated by the pallet rotating drainer, and the pallet is drained using centrifugal force.
As long as the pallet after draining is put on the conveyor 16 and carried out, it is needless to say that the pallet is included in the technical scope of the present invention.

[0034]

As described above, according to the pallet drying system of the present invention, the dewatering chamber is provided at the pallet stop position of the intermittently moving conveyor, and the pallet is rotated in the dewatering chamber to drain water by centrifugal force. Since the pallet draining rotating means is provided and the air blowing means for blowing air near the rotation center of the pallet is provided, the pallet draining rotating means has an effect of rotating the pallet and removing water by centrifugal force. At the same time, near the center of rotation of the pallet where the effect of the centrifugal force is small, air is blown to the water by the air blowing means and the water is pushed down to the place where the centrifugal force is large. Within 10 seconds, even within a minute, even at low speed, within 1 minute to remove the water on the pallet, including near the center of rotation, After that, the pallet can be dried naturally while transferring the pallet, and can be dried in a much shorter time than before so that the drainage can be sufficiently performed within one minute even at a low speed rotation. The equipment is much smaller because it only needs to provide a dehydration chamber that can accommodate one pallet and rotate. Energy saving compared to hot air drying. As long as the water does not freeze, it is not affected by the weather, and there are excellent effects such that attached dust can be removed by centrifugal force.

According to the pallet drying system of the present invention, in the pallet drying system according to the first aspect, pallet draining rotating means for rotating the pallet and draining the pallet above the pallet stop position of the conveyor is provided. By having a configuration in which air blowing means is provided on the rotating shaft of the pallet draining rotating means, at the pallet stop position of the transport conveyor, the configuration in which air blowing means is provided on the rotating shaft of the upper pallet draining rotating means, The air can be reliably blown to the center of rotation, and the structure of the air blowing means can be simplified by using the rotating shaft of the pallet drainer rotating means together.

Further, according to the pallet drying system of the present invention, in the pallet drying system according to the first or second aspect, the pallet is lifted from the transport conveyor below the pallet stop position of the transport conveyor, and the pallet draining rotating means is used. By providing a pallet supply means for rotatably supplying a pallet, and having a configuration in which an air blowing means is provided on a rotation axis of the pallet supply means, the pallet is lifted from the conveyor and rotated, and provided on the rotation axis. By using a system that drains water using air blowing means, the pallet draining rotation means rotates with its own rotating structure at a position deviating upwards irrespective of the plane position of the conveyor, and the conveyor is moved to the pallet in the dehydration chamber. Transport conveyors and pallets, Without a special structure with rotating means at the intersection of the two, there is an effect that can be drained by rotating the pallet.

According to the pallet dewatering apparatus of the present invention, a pallet draining rotating means for rotating the pallet at a pallet stop position of the conveyor to cut off water by centrifugal force is provided, and air is supplied near the center of rotation of the pallet. By having a configuration provided with an air blowing means for blowing, the pallet draining rotating means rotates the pallet to cut off water by centrifugal force and to a position where centrifugal force can act by blowing air near the rotation center of the pallet Since it has a configuration to flush out water, as described above, within a few seconds to several tens of seconds at high speed rotation, one
Within a minute, the water on the pallets is scattered and removed, and then the pallets can be dried naturally during transportation, and can be sufficiently drained within one minute even at a low speed rotation. Crabs can be dried in a short period of time, and the equipment only needs to be provided with a space that can accommodate one pallet and rotate, so it is much smaller, energy saving compared to hot air drying, and thermal temperature management It is unnecessary and can be immediately dehydrated with a single switch when necessary, so that it is not affected by the weather unless the water freezes, and it is possible to remove attached dust by centrifugal force. effective.

According to the pallet dewatering device of the present invention, in the pallet dewatering device according to the fourth aspect, the pallet draining rotating means provided above the pallet stop position of the transport conveyor, and the pallet on the transport conveyor. Pallet supply means for lifting and pressing the pallet with the pallet draining rotating means so as to be rotatable, holding and rotating the pallet together with the pallet draining rotating means, supporting the pallet after rotation is stopped, and placing the pallet on a conveyor, and pallet draining rotation Means and / or an air blowing means for blowing air near the center of rotation of the pallet provided in the pallet supply means, so that the pallet on the conveyor is lifted and rotatably pressed against the pallet draining / rotating means. Hold the pallet together with the pallet drainer rotating means After the rotation is stopped, the pallets are supported and placed on the conveyor, so that not only the pallets are supplied to the pallet draining rotating means provided above the transport conveyor, but also the pallets are held together with the pallet draining rotating means. By rotating the pallet, there is an effect that the pallet can be reliably held during the rotation operation. In addition, the pallet drainer rotating unit and / or the air blowing unit that blows air near the center of rotation of the pallet provided in the pallet supply unit can perform centrifugation. There is an effect that the pallet can be quickly dewatered including the vicinity of the rotation center of the pallet where the force is hard to act.

According to the pallet dewatering device of the present invention, the pallet dewatering device according to the fourth or fifth aspect has a structure in which an air blowing means is provided on the rotating shaft of the pallet supply means, so that the lower surface of the pallet is provided. Air can be reliably blown to the rotation center of the pallet, and the structure of the air blowing means can be simplified by using the rotating shaft of the pallet draining rotation means together with the air blowing means, and the rotation center of the lower surface of the pallet can be simplified. There is an effect that the structure can be easily dehydrated including the vicinity thereof.

According to the pallet dewatering device according to the present invention, in the pallet dewatering device according to claim 4, 5 or 6, the pallet draining rotation means rotates together with the rotating shaft interlocked with the drive motor. And the rotary shaft is provided with air blowing means, so that the pallet supplied by the pallet supply means is received by the pallet detachment prevention case, the drive motor rotates centrifugally, and the air on the rotary shaft is rotated. By the spraying means, there is an effect that the pallet can be reliably rotated and drained including the vicinity of the rotation center without detaching.

According to the pallet dewatering apparatus according to the present invention, in the pallet dewatering apparatus according to Claims 4, 5, 6 or 7, the pallet supply means comprises an elevating device and an elevating device. It has a configuration including an elevating platform that moves up and down, a bearing platform supported on the elevating platform via spring elastic means, a rotating shaft rotatably bearing on the bearing platform, and a pallet supporting platform fixed to the rotating shaft. Thereby, when the pallet is pressed against the pallet draining rotating means and is supported rotatably, a stable contact pressure can be obtained by the spring elasticity, and the pallet can be held safely and can be rapidly rotated and stopped suddenly. This has the effect of absorbing rotational vibration during operation and enabling stable drainage operation.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view schematically showing a main part of an embodiment of a pallet drying system according to the present invention.

FIG. 2 is a schematic front view schematically showing a main part of one embodiment of a pallet dewatering apparatus according to the present invention.

FIG. 3 is a schematic side view of one embodiment of FIG. 2;

FIG. 4 is a schematic enlarged front view showing an essential part of one embodiment of a pallet dewatering device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pallet supply part 2 Pallet 3 Individual mounting table 4 Arrow 5 Lifting member 6 CCD camera 7 Pallet reversing machine 8 Upper and lower frame 9 Pallet sorting machine 10 Pallet washing machine 11 Pallet dewatering device 12 Pallet discharge section 13 Arrow 14 Lifting member DESCRIPTION OF SYMBOLS 15 Prop 16 Conveyor 17 Division part 18a-18e Horizontal girder frame member 19a-19c Horizontal girder frame member 20, 21 Support girder member 22, 23 Support girder member 24, 25 Bearing member 26 Rotary shaft 27 Small pulley 28 Drive motor 29 Clutch and Brake mechanism 30 Large pulley 31 Belt 32 Pallet separation prevention case 33, 34 Arm member 35, 36 Release prevention piece 37 Water receiving case 38 Mounting member 39 Noren member 40 Lifting device 41 Lifting table 42 Spring elastic means 43 Bearing table 44 Rotating shaft 45 Pallet support 46 Next to the base Member 47 Basic horizontal girder member 48, 49 Link 50 Base table 51 Base end portion 52 Tip portion 53 Coil spring (spring elastic means) 54 Connecting member 55 Bearing member 56 Non-slip member 60 Air blowing means 61 Air rotary joint 62 Compressed air supply pipe 63 solenoid valve 64 air nozzle 65 air passage 66 air passage 67 air rotary joint 68 compressed air supply pipe 69 solenoid valve 70 air nozzle

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Hideki Kamiya 3-2 Yotsutsuka, Noba, Koda-cho, Nita-gun, Aichi Prefecture F-term in Central Conveyor Co., Ltd. 3L113 AA03 AB08 AC35 AC48 AC68 BA05 DA02 DA24

Claims (8)

[Claims] 1. A dewatering chamber is provided at a pallet stop position of an intermittently moving transport conveyor, and a pallet draining rotation means for rotating a pallet to remove water by centrifugal force is provided in the dehydration chamber, and air is provided near a rotation center of the pallet. A pallet drying system provided with air blowing means for blowing air. 2. The pallet drying system according to claim 1, further comprising pallet drainer rotating means for rotating the pallet and draining the pallet above the pallet stop position of the transport conveyor, and blowing air on the rotating shaft of the pallet drainer rotating means. A pallet drying system comprising means. 3. The pallet drying system according to claim 1, wherein the pallet supply means for lifting the pallet from the conveyor below the pallet stop position of the conveyor and supplying the pallet rotatably to the pallet draining rotating means. A pallet drying system, comprising: an air blowing means provided on a rotating shaft of the pallet supply means. 4. A pallet drainer rotating means for rotating the pallet to remove water by centrifugal force at a pallet stop position of the conveyor, and air blowing means for blowing air near the center of rotation of the pallet. Pallet dewatering equipment. 5. The pallet dewatering apparatus according to claim 4, wherein the pallet draining rotating means provided above the pallet stop position of the transport conveyor, and the pallet on the transport conveyor being lifted and rotatable by the pallet draining rotating means. Pallet supply means for holding and rotating the pallet together with the pallet draining rotating means, supporting the pallet after rotation is stopped, and placing the pallet on a conveyor, and pallets provided in the pallet draining rotating means and / or pallet supplying means A pallet dewatering device comprising air blowing means for blowing air near the rotation center of the pallet. 6. The pallet dewatering apparatus according to claim 4, wherein air blowing means is provided on a rotating shaft of the pallet supply means. 7. The pallet dewatering apparatus according to claim 4, wherein the pallet drainer rotating means integrally includes a pallet detachment prevention case which rotates together with a rotating shaft interlocked with a drive motor, and the pallet draining rotating means is provided on the rotating shaft. A pallet dewatering device provided with air blowing means. A pallet dewatering device, characterized in that: 8. A pallet dewatering apparatus according to claim 4, wherein the pallet supply means for supplying the pallets to the pallet draining / rotating means includes an elevating device, an elevating platform which is elevated by the elevating device, and an elevating device. A pallet dewatering apparatus comprising: a bearing table supported on a table via spring elastic means; a rotating shaft rotatably supported by the bearing table; and a pallet supporting table fixed to the rotating shaft.