JPH02245281A - Apparatus for cleaning pallet - Google Patents

Abstract

PURPOSE:To enable cleaning for short time by providing a pallet shifting passage providing driving carry mechanism and a vacuum pad for sucking water, etc., on upper face of the pallet. CONSTITUTION:The pallet 14 is laid on rollers 11 and shifted along the pallet shifting passage 12. At first, the pallet 14 passes below the vacuum pad 13 and the pad 13 is brought into sliding contact with the upper surface 14a of pallet 14 to remove water and dust. On the lower surface 14b of pallet 14, air is blown with air blow device 16 to spatter and remove the water and dust. After that, the pallet 14 passes between one pair of sweeping rollers 19, 20 to be swept the surface of pallet with soft urethane foams 19a, 20a forming the outer circumferences of the sweeping rollers 19, 20. By this method, the cleaning can be mechanically executed and damage can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a pallet cleaning device, and more particularly to a device for simultaneously cleaning the top and bottom surfaces of a pallet.

(Prior Art) It is well known that pallets are used when carrying out cargo handling work using a forklift. Pallets are often piled up in the open when not in use. Pallets that have been stacked in the open in this way are exposed to rain and dust, and if they are used directly, the packaging cardboard on the outside of the cargo may get wet or get dusty, causing damage or stains. It causes. Therefore, in order to prevent damage to outer packaging boxes, prevent contamination, and maintain hygiene, the top and bottom surfaces of pallets that have been stored in the open should be brushed or clothed with a cloth before being used. There is. Conventionally, all such cleaning of pallets has been done manually.

(Problem to be solved by the invention) As mentioned above, in the past, all the cleaning of pallets was done by humans, which required a lot of manpower, was difficult to secure the workers, and was difficult to clean. There are problems in terms of economy and labor, as in some cases the cleaning is insufficient, and there is also the problem of lack of reliability in terms of completeness of cleaning.

SUMMARY OF THE INVENTION An object of the present invention is to provide an apparatus for mechanically cleaning wet or dusty pallets in a short period of time.

(1! Means for Solving the Problem) One of the pallet cleaning devices of the present invention includes a pallet moving path provided with a drive conveyance mechanism, and a pallet moving path located above the pallet moving path and configured to move along the pallet moving path. a vacuum pad that sucks water and dust from the upper surface of the pallet; an air blow device located at the lower part of the pallet movement path and which blows air to the lower surface of the pallet to remove water and dust; and the vacuum pad. and a pair of wiping rollers that are disposed above and below the pallet moving path in the pallet traveling direction from the air blowing device and wipe both upper and lower surfaces of the pallet.

Furthermore, other configurations of the pallet cleaning device of the present invention include:
It is characterized in that the vacuum pad and the air blow device are appropriately combined on the upper and lower surfaces of the pallet.

(Function) According to one example of the pallet cleaning device of the present invention, a pallet is placed on a pallet movement path that includes a drive conveyance mechanism such as a conveyance roller, a conveyance chain, a conveyance belt, etc., and is moved within the pallet cleaning device. . The pallet first moves directly under the pallet so that the vacuum pad slides on the top surface of the pallet, and water and dust on the top surface of the pallet are sucked and removed by the negative pressure applied to the vacuum pad. At the same time, air is blown onto the lower surface of the pallet by an air blower to scatter and remove water and dust. The pallet from which water and dust have been removed from the upper and lower surfaces in this manner then passes between a pair of wiping rollers while moving along the pallet movement path, and the upper and lower surfaces are wiped off. Incidentally, even if the vacuum pad or the air blow device is appropriately combined and arranged on the upper and lower surfaces of the pallet, the effect is the same, although the manner in which water and dust are removed from the upper and lower surfaces of the pallet is slightly different.

(Embodiments) Hereinafter, the pallet cleaning device of the present invention will be described in more detail with reference to embodiments shown in the accompanying drawings.

1 to 4 show a pallet cleaning device IO according to an embodiment of the present invention. The pallet cleaning device IO of this embodiment includes a pallet moving path 12 configured by arranging a large number of conveyance rollers 11, and a vacuum pad 13 is arranged at the upper part of the pallet supply side of this pallet moving path 12. . The vacuum pad 13 is a suction port made of an elastic material such as N t Li rubber, and the vacuum pad 13 is a suction port made of an elastic material such as N t Li rubber, and is used to support the pallet 14 moving on the pallet moving path 12 .
It is fixed at a height position where it can come into sliding contact with the upper surface 14a of.

Only one vacuum pad 13 may be installed with its width approximately equal to the width of the pallet 14, but preferably two to four narrow vacuum pads are installed in parallel. Thereby, the upper surface of the pallet 14 can be cleaned more uniformly. The vacuum pad 13 is connected by a tube 15 to a suitable negative pressure source (not shown).

An air blow device 16 is arranged at the lower part of the pallet supply side of the pallet moving path 12. This air blowing device 16 includes a plurality of air blowing nozzles 17a arranged in a row in the width direction of the pallet 14, and the blowing outlet 17b of each nozzle 17a is directed toward the lower surface of the pallet 14.

Each of these air blowing nozzles 17a is connected via a tube 18 to a suitable pressurized air source (not shown).

Further, the pallet cleaning device 10 includes a pair of wiping rollers 19 and 20 arranged at the upper and lower portions of the pallet moving path 12 on the pallet advancing direction side from the vacuum pad 13 and air blow device f16 described above. The upper and lower wiping rollers 19 and 20 are each constructed by attaching water-absorbing materials 19a and 20a such as a sponge or soft urethane foam to the outer peripheral surface of a metal cylindrical body, and the urethane foams 19a and 20a move. The pallet 14 is placed in pressure contact with the upper surface 14a and lower surface 14b of the pallet 14.

The upper wiping roller 19 is supported by having both ends rotatably attached to an arm 23 whose one end is rotatably supported by a bearing 22 provided on a pedestal 21. An air cylinder device 24 in which a piston rod 24a is connected to a shaft that supports the wiping roller 19 (rear wiping roller 19 described later in FIG. 1)
(only shown in the figure), it is possible to rotate about 1/4 turn. That is, at the position where the upper wiping roller 19 comes into pressure contact with the pallet 14, the arm 23 is horizontal as shown in FIG. The roller 19 is lifted above the pallet pressing position as shown by arrow 25. This position of the wiping roller 19 lifted upward is conveniently referred to as a cleaning position.
A pressure roller 2 made of a hard material such as hard rubber or metal is disposed below the wiping roller 19 to squeeze out water contained in the urethane foam 19a of the wiping roller 19.
7 is rotatably supported at both ends by an arm 2B, and the arm 28 is also connected to a piston rod 29a of an air cylinder device 29 so that the pressure roller 27 approaches and moves away from the wiping roller 19. Further, below this pressing roller 27, a dish 30 is arranged as a water receptacle for receiving the water squeezed out from the urethane foam 19a of the wiping roller 19 by the pressing roller 27 and discharging it to the outside of the pallet cleaning device IO. has been done.

On the other hand, the lower wiping roller 20 is rotatably supported at both ends by the pedestal 21 of the pallet cleaning device 10, and therefore does not move from that position. The same water sprinkling pipe 26, pressure roller 27, and water tray 30 as those provided at the washing position are arranged. Each of these wiping rollers 19, 20
As shown in FIGS. 2 to 4, the device 10
The rotation of the output shaft of a motor 31 located at the bottom of the
The rotation is transmitted to the shaft that supports 9 and 20.

Another pair of such wiping rollers 19 and 20 is provided on the pallet traveling direction side of the pallet moving path 12, and accordingly, the cleaning position for the upper wiping roller 19 and the position of the lower wiping roller 2° are changed. Exactly the same water sprinkler pipe 26, pressure roller 27, and water tray 30 are arranged in the . Note that the entire pallet cleaning device IO is surrounded by a cover 34.

Next, the operation of the pallet cleaning device 10 of this embodiment will be explained.

For example, pallets 14 that have been piled up in the open and exposed to rain and dust are placed on rollers 11 and moved along the pallet movement path 1.
2 will be moved. At this time, the moving force can be applied to the pallet 14 by using some of the many rollers 11 as drive rollers.

The pallet 14 first passes under the vacuum pad 3, and at this time the puff 13 slides against the top surface 14a of the pallet 14 to remove water and dust from the top surface just like a vacuum cleaner. At the same time, air is blown by the air blower 16 onto the lower surface 14b of the barrel [4 to scatter and remove water and dust.

Thereafter, the pallet 14 is moved by a pair of upper and lower wiping rollers 19.
20, at which time the soft urethane foams 19a and 20a forming the outer periphery of each wiping roller 19 and 20 come into pressure contact with the upper surface 14a and lower surface 14b of the pallet 14,
While rotating, the upper surface 14a and lower surface 14b of the barrel 14 are wiped off. Upper and lower surfaces 14a, 1 of the pallet 14
After wiping off the pallet 4b, the wiping rollers 19 and 20 return to the cleaning position, squeeze out the absorbed water with the pressure roller 27, and wait until the next pallet 14 advances. It is not necessary to carry out this drawing operation every time for each pallet.
It can be changed as appropriate depending on the wet state of the pallet. Then, the pallet 14 passes between another pair of wiping rollers 19 and 20 arranged on the side in the direction of movement, and its upper surfaces 14a and 14b are wiped again, and then it is discharged from the pallet cleaning device 10. . In this embodiment, the pair of wiping rollers 19 and 20 are arranged in two pairs, ie, 2 & I, on the upper surface 14a and lower surface 14b of the bullet 14.
This is to ensure thorough wiping of the
&[l is not required.

However, when the pallets 14 are to be conveyed continuously without any gaps, two pairs of wiping rollers (front and rear wiping rollers) are set alternately in the wiping position and the cleaning position to operate continuously and efficiently. can do.

When the pair of wiping rollers 19.20 wipes the upper surfaces 14a and lower surfaces 14b of several pallets 14 in this way, the urethane foam 19a of the wiping rollers 19.20
, 20a becomes dirty. At that time, the arm 22 of the upper wiping roller 19 is moved to the cleaning position by the operation of the air cylinder device 24, and the upper wiping roller 19 is cleaned by a jet of water etc. coming out of the sprinkler pipe 26, and then the pressing a
- The lower wiping roller 20 is cleaned in exactly the same way as the wiping roller 19 at that position, where the roller 27 is pressed against the wiping roller 19 to squeeze out the water contained in the urethane foam 19a while compressing the urethane foam 19a.

5, 6 and 7 each partially show a pallet cleaning device according to a modification of the present invention. The modified pallet cleaning device shown in FIG. 5 has a vacuum pad 13 that is the same as the vacuum pad 13 at the top in place of the air blow device that was placed at the bottom of the pallet moving path 12 on the pallet supply side of the device. This embodiment is the same as the embodiment shown in FIG. 1 except that it is constructed as follows. In addition, the pallet cleaning device of the modification shown in FIG. 6 has an air blow device that is the same as the air blow device 16 at the bottom in place of the vacuum pad that was disposed at the top of the pallet moving path 12 on the pallet supply side of the device. It is constructed by arranging 16.

Furthermore, the modified pallet cleaning device shown in FIG.
Pallet movement path 12 on the pallet supply side of the device
An air blow device 16 is disposed in the upper part of the vacuum pad 16, and a vacuum pad 13 is disposed in the lower part. In this way, even if the vacuum pad 13 or the air blow device ff116 is arranged in any combination at the upper and lower parts of the pallet moving path 12 on the pallet supply side, the same result as the pallet cleaning device 10 of the embodiment shown in FIG. be effective.

Although the pallet cleaning apparatus of each of the embodiments described above uses a large number of conveyance rollers 11 as means for conveying the pallets 14, the present invention is not limited to this. The pallet may be conveyed by two or more disposed chains or belts, and in short, any mechanism may be used as long as the lower surface of the pallet is exposed while being conveyed.

(Effects of the Invention) As explained above, according to the pallet cleaning device of the present invention, for example, the upper and lower surfaces of pallets that have been piled up in the open and exposed to rain and dust can be cleaned mechanically and in an extremely short period of time without manual intervention. As a result, the cleaning can be done completely, and the chain of trust is high in terms of sanitary control and prevention of damage to the packaging material, and the problem of difficulty in securing workers is also solved.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view schematically showing a pallet cleaning device according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of the pallet cleaning device taken along the line ■-■ in FIG. 1, and FIG. 1 is a partial plan view of the pallet cleaning device shown in FIG. 1 viewed from above with the upper cover removed; FIG. 4 is a structural explanatory diagram schematically showing the drive mechanism of the wiping roller in the pallet cleaning device shown in FIG. 1; FIG. 5, FIG. 6, and FIG. 7 are partially explanatory views showing a modification of the pallet cleaning device of the present invention. 10... Pallet cleaning device, 11... Roller, 12
...Pallet movement route, 13...Bakiame pad, 16...Air blow device, 19.20...Wiping row diagram O diagram diagram

Claims (4)

[Claims] (1) A pallet moving path including a driving conveyance mechanism, a vacuum pad located above the pallet moving path and sucking water and dust from the upper surface of the pallet traveling along the pallet moving path, and a vacuum pad for sucking water and dust from the upper surface of the pallet moving along the pallet moving path; an air blowing device located at the bottom of the path and blowing air to the bottom surface of the pallet to remove water and dust; and an air blowing device located at the top and bottom of the pallet moving path in the pallet traveling direction from the vacuum pad and the air blowing device. and a pair of wiping rollers for wiping both upper and lower surfaces of the pallet. (2) A pallet moving path equipped with a drive conveyance mechanism, and a pair of vacuums located at the upper and lower parts of the pallet moving path to suck up water and dust from the upper and lower surfaces of pallets traveling along the pallet moving path. A pallet cleaning device comprising: a pad; and a pair of wiping rollers disposed above and below the pallet moving path in the pallet traveling direction from the vacuum pad and wiping both upper and lower surfaces of the pallet. (3) A pallet moving path equipped with a drive conveyance mechanism, and a pair of air units located at the upper and lower parts of the pallet moving path to remove water and dust from the upper and lower surfaces of pallets traveling along the pallet moving path. A pallet cleaning device comprising: a blow device; and a pair of wiping rollers that are disposed above and below the pallet moving path in the pallet traveling direction from the air blow device and wipe both upper and lower surfaces of the pallet. (4) A pallet moving path equipped with a drive conveyance mechanism, and an air blowing device located above the pallet moving path that blows air onto the top surface of pallets traveling along the pallet moving path to remove water and dust. a vacuum pad that sucks water and dust from the lower surface of the pallet; and a pair of air blowing devices and vacuum pads that are disposed above and below the pallet moving path in the pallet traveling direction and wipe both the upper and lower surfaces of the pallet. A pallet cleaning device comprising a wiping roller.