JPH07215665A - Palletizer and empty pallet supplying device - Google Patents

Abstract

PURPOSE:To provide a palletizer with simple structure, in which vibration is not generated at the time of elevating cargo and which does not require a large upper space, and to provide an empty pallet supplying device with simple structure, which can shorten the empty pallet waiting time and which does not require a large space in plan view. CONSTITUTION:A steel belt for elevating cargos (6a, 6b) and an empty pallets 8 is arranged in four corners of a palletizer and an empty pallet supplying device, and cranes 3, 4 to be wound up/down by a drum are used. In an empty pallet supplying device, a platform is provided over the palletizer, and an intermediate empty pallet storage space, from which an empty pallet 8 is supplied to the palletizer, is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a palletizer for a palletizing system and an empty pallet feeder, and more particularly to a palletizer which does not occupy an upper space for installing a palletizer and a flat pallet and which supplies an empty pallet. The empty pallet feeder that smoothly and promptly supplies pallets when used in all logistics and industrial fields that need to automatically load, ship, and transport boxes, cases, and bags. It

[0002]

2. Description of the Related Art In general, it is widely practiced to load packages on pallets and transport them by forklifts at shipping sites of production plants, automatic warehouses and the like. In the palletizing system for carrying out pallet packing, in the conventional case where the wire rope is wound up by a drum in order to elevate and lower the mechanism for palletizing the goods (automatically packing the goods on the pallet), The column was used to prevent the swinging of the column. In addition, a system for palletizing an articulated robot arm is known.

Regarding the supply of empty pallets to the stowage section of the palletizer, a method is known in which, when the pallet transfer is not automated, it is transferred from a predetermined empty pallet storage area by a forklift or the like. On the other hand, if pallet transportation is automated, it is known to install an empty pallet stage disassembling machine that separates empty pallets one by one into the line and convey the separated empty pallets by a chain conveyor or roller conveyor. Has been.

[0004]

In the apparatus using the column for palletizing, it is possible to prevent the swinging of the load, but there is a problem that an upper space is required for the column. In addition, the technology using the articulated robot arm tends to be expensive in equipment.

Further, regarding the supply of empty pallets to the stowage section of the palletizer, when a forklift or the like is used, the supply efficiency is low and a safety problem arises.

When the pallet transportation is automated as described above, such a problem does not occur,
There was a problem that facilities tended to be sophisticated. In addition, there is a problem that a large amount of flat space occupied by the conveyor is required to convey the empty pallet from the empty pallet storage area by the conveyor.

Therefore, it is conceivable that a monorail type empty pallet transfer device is provided on the ceiling part to transfer the empty pallet from the empty pallet storage area.

However, this apparatus has a problem that a waiting time for transportation is long when the palletizer is away from the empty pallet storage area.

The present invention has been made to solve the above-mentioned problems of the prior art. A first object of the present invention is that the structure of the palletizer is simple, and that there is no wobbling during lifting and lowering of cargo. It is to provide a palletizer that does not require much space above.

A second object of the present invention is to provide an empty pallet supply device which has a simple structure for supplying empty pallets and does not require a large amount of flat space.

Further, a third object of the present invention is to supply empty pallets smoothly and quickly, and further, even when the palletizer is away from the empty pallet storage area, the waiting time for conveying empty pallets is long. It is to provide an empty pallet supply device that does not require.

[0013]

In order to achieve the above first object, there is provided a palletizer having a loading section for loading loads, a means for feeding and supplying empty pallets to the loading section, and A means for transporting the load to the loading section, a positioning means for positioning the load at a desired position when the load is loaded on an empty pallet in the loading section, and a positioning means. In the palletizer having a crane for raising and lowering and transporting the load, the crane uses a belt body having rigidity as means for hoisting and lowering an elevating part equipped with means for holding the load by a drum. And the drum for mounting the belt body is provided at a plurality of places,
The belt body is arranged so as to have a component in the direction of 90 degrees.

More specifically, in the above palletizer, the crane includes a frame, and four drums arranged in a 90-degree direction with respect to each other via a drive motor on the frame via drive means including bevel gear means. , Four steel belts each having an upper end fixed to each of these four drums, an elevating part connected to the lower ends of these four steel belts, and a luggage holding means equipped in the elevating part. It was done like this.

In order to achieve the second object,
The configuration of the first empty pallet supply device according to the present invention is an empty pallet supply device comprising an empty pallet transfer device and a traveling rail provided above the palletizer and for moving the empty pallet transfer device, The empty pallet transfer device is configured as a crane, and the crane uses a belt body having rigidity as a means for hoisting and lowering an elevating part equipped with an empty pallet holding means by a drum, and the belt body and the belt body. A plurality of drums on which the belt body is mounted are provided at a plurality of places, and the belt body is arranged so as to have a component in the direction of 90 degrees.

More specifically, in the above-mentioned empty pallet feeder, the crane is provided with four frames which are arranged in a 90 ° direction with respect to each other through a frame and a drive motor including bevel gear means from a drive motor on the frame. Drums, four steel belts with their upper ends fixed to these four drums, a lifting unit connected to the lower ends of these four steel belts, and the holding of empty pallets mounted on these lifting units. And means.

In order to achieve the third object,
A configuration of a second empty pallet supply device according to the present invention is, in an empty pallet supply device for supplying an empty pallet to a palletizer, located between an empty pallet storage location and a route for conveying the empty pallet to the palletizer. In addition, an intermediate empty pallet storage area is provided near the palletizer, and the empty pallets are supplied from the intermediate empty pallet storage area.

More specifically, in the above-mentioned empty pallet supply device, the empty pallet supply device is provided with an empty pallet transfer device, and a traveling rail for traveling the empty pallet transfer device, the traveling rail being provided above the palletizer. A sidewalk is provided above the palletizer but below the traveling rail, and an intermediate empty pallet storage area is provided on the sidewalk.

[0019]

The present invention employs a structure in which belts having rigidity are arranged in four directions, and the belts are wound up and down to lift and lower the load of the palletizer.

Therefore, due to the rigidity of the belt, the swing of the load can be prevented, and the column for preventing the swing is not required.
The height of the palletizer can be reduced by almost eliminating the need for an upwardly projecting portion, and does not require much space above. Moreover, the structure is simpler and the manufacturing cost is lower than that of the articulated robot arm type palletizer.

Further, in order to supply empty pallets, an empty pallet transfer device is provided on the ceiling, and belts having rigidity are arranged in the above four directions from the empty pallet yard, and the belts are wound up and down, and the structure is raised and lowered. Use the device.

Therefore, similarly to the above, it is possible to prevent the shake when the empty pallet is conveyed. Furthermore, by providing an intermediate storage area for empty pallets near the palletizer,
The pallet can be supplied by supplying an empty pallet to the palletizer from the intermediate storage area, so that the waiting time of the empty pallet can be shortened.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment according to the present invention will be described below with reference to FIGS.

[Palletizer] The structure and operation of the palletizer according to the embodiment of the present invention will be described below with reference to FIGS. 1 and 2. First, the overall structure of the palletizer will be described with reference to FIG. Figure 1
FIG. 3 is a perspective view of a palletizer according to an embodiment of the present invention.

A girder 1 that travels in the X arrow direction and a trolley 3 that travels in the Y arrow direction are provided on the top of the gantry 1. The trolley 3 is equipped with a crane 30,
By winding up or down a belt having rigidity such as a steel belt of the crane 30, Z
It has an elevating part 4 for elevating in the direction of the arrow. The structure of the crane 30 will be described later in detail.

The pull-in conveyor 10 is an end portion of the transfer conveyor for loading the loads 6a to 6c supplied from the upstream side of the conveyor with a stopper 7 to stop the loads at a desired position and stack them on an empty pallet. In addition, the grip portion 5 of the elevating portion 4
Also has the function of rotating the luggage in the direction of arrow θ.

Next, the movements of the load and the pallet will be described with reference to FIG. FIG. 2 is a perspective view of a palletizer according to an exemplary embodiment of the present invention, which illustrates movements of a load and an empty pallet.

The girder 2 and the trolley 3 are evacuated to a position not above the conveyor 9 (to the right in FIG. 2), and empty pallets are supplied from above the palletizer in the direction of arrow a.

The load to be palletized is the pull-in conveyor 1
It is carried from the upstream of 0 in the direction of arrow A, stopped by the stopper 7, and positioned. Then, the girder 2 and the trolley 3 are operated, the lifting unit 4 is brought above the luggage 6c ', and the luggage is chucked by the grip portion 5.

The luggage 6c ″ chucked by the grip portion 5 is moved upward by the crane 30. Then, the load 6c ″ is positioned at an appropriate position on the pallet by appropriately moving the girder 2 and the trolley 3 in the XY directions. After that, the elevating part 4 is wound down again, and the load is released on the pallet. An example of the route is arrow B.

After the loads 6a and 6b are stacked, the pallet 8 is conveyed in the direction of the arrow b by the conveyor 9 and moved to the end portion protruding from the gantry 1. Finally, the pallet 8 is unloaded by a forklift or the like.

[Detailed Structure of Crane] Next, the detailed structure of the crane according to the embodiment of the present invention will be described with reference to FIGS. 3 and 4. FIG. 3 is a front view of the crane according to the embodiment of the present invention. FIG. 4 shows A of FIG.
FIG.

The crane of the present embodiment is arranged in a 90 ° direction with respect to each other through a frame 38 constituting the lower part of the trolley 3 and a motor 33 on the frame 38 via driving means such as a bevel gear 39 and a drive shaft 40. 4 belt drums 32, 4 steel belts 31 having their upper ends fixed to these 4 belt drums 32, and a lifting tool base 35 connected to the lower ends of these 4 steel belts 31. It consists of and.

Below the hanging base 35, the grip portion 5 is provided.
Are connected to each other, and a movable claw 36 and a fixed claw 37 are provided to chuck a load. In FIG. 3, α is a position where the movable claw 36 is opened to the maximum, and β is a position where the movable claw 36 is moved to chuck a load of an appropriate size.

The steel belt 31 is made of stainless steel and has such a width and thickness that it should have a rigidity capable of suppressing the shake of an article to be lifted and moved. For example, when the diameter of the belt drum 8 is 60 mm, the belt is Thickness is 0.15m
m. It goes without saying that the drum gauge, belt width, and thickness combination differ depending on the magnitude of the load.

The arrangement and driving means of the belt drum 32 and the steel belt 31, which are the features of this embodiment, will be described with reference to FIGS. 1 and 2.

In the present embodiment, as shown in FIG. 2, four sets of belt drums 32 are provided which are located at 90 degrees to each other.
The steel belts 31 are arranged on the four sides.

As a means for rotating the belt drum 32, a motor 33 is installed at the end of the frame 1, and a pulley 41 of the motor shaft is transferred to a pulley 42 of the drive shaft via a drive belt 34 (preferably a toothed belt). The four drum drive shafts 40 are synchronously driven by the bevel gears 39 attached to the end faces of the respective drum drive shafts 40, and the four drum drive shafts 40 are fitted to the four drum drive shafts 40. The drum 32 is configured to rotate.

When the crane having such a structure is used to move up and down, the motor 33 is started to move the load 4
Four bevel gears 39 at the corners and drum drive shafts 40 at right angles to each other rotate four belt drums 32 arranged on the drum drive shaft 40 at right angles to each other in synchronization with each other. The four surfaces of the steel belt 31 mounted on the work drum 32 are synchronously rolled up and down, and the lifting tool base 35 to which the grip portion 5 is attached is moved up and down.

With this structure, the steel belts 31 having rigidity are positioned 90 ° to each other even when the crane is moved by the girder 2 and the trolley 3.
Since the hoisting and hoisting are synchronized in the plane, the load does not shake.

[Empty Pallet Supply Device] Next, an empty pallet supply device will be described with reference to FIG. FIG. 5 is a top view (a) of the empty pallet feeder, and a side view (b) of the palletizer and the empty pallet feeder.

In this embodiment, as shown in FIG.
Three palletizers P are installed, and the pallet transporter 17 travels while being guided by the traveling rails 11 above the palletizer. Further, in this embodiment, the pallet carrier 1
In Fig. 7, a crane for hoisting and lowering the steel belt is used.

The empty pallet 8 is stored in the empty pallet guide 15 at any time. Incidentally, it is usual that a plurality of sheets are collectively supplied to the empty pallet guide by a forklift or the like. The empty pallet 8 in the empty pallet guide 15 is carried out by the pallet carrier 17 and moved in the directions of and of FIG. 5 to the desired palletizer to which the empty pallet should be supplied. On the transfer line of the pallet transfer machine 17, a sidewalk 14 is attached to the beam 13 of the building by the frame 12 in order to carry out safety problems and maintenance of equipment. The sidewalk 14 has an empty pallet supply port 16
Is open, and the empty pallet 8 is supplied from here to the palletizer P below.

By the way, normally, the empty pallet guide 15
Since the empty pallet is supplied from the pallet carrier 17, as described above, the pallet transporter 17 follows the routes of ,. In this case, when the palletizer requests empty pallet supply, the empty pallet guide 15 must be picked up one by one, so that it takes a very long time, and the waiting time for supply becomes long.

Therefore, in this embodiment, an intermediate empty pallet storage space γ is provided near the empty pallet supply port 16. Then, the empty pallet 8 is carried and set aside by utilizing the empty time when the palletizer P does not request the carrying. In this way, when the palletizer P requests to convey an empty pallet, for example, ‘
Empty pallets can be supplied by the route of ','. Therefore, there is an advantage that the time for supply is shortened and the waiting time for supply is shortened.

In the intermediate empty pallet storage space γ, a plurality of empty pallets can be placed within the range allowed by the physical space.

[0047]

According to the present invention, it is possible to provide a palletizer which has a simple palletizer structure, does not shake when lifting and lowers a load, and does not require a large space above.

Regarding the supply of empty pallets, it is possible to provide an empty pallet supply device which has a simple supply structure and does not require a large amount of flat space.

Further, there is provided an empty pallet supply device which smoothly and quickly supplies empty pallets and does not require a long waiting time for transporting empty pallets even when the palletizer is away from the empty pallet storage area. be able to.

[Brief description of drawings]

FIG. 1 is a perspective view of a palletizer according to an embodiment of the present invention.

FIG. 2 is a perspective view of a palletizer according to an exemplary embodiment of the present invention, showing movements of a load and an empty pallet.

FIG. 3 is a front view of the crane according to the embodiment of the present invention.

FIG. 4 is a plan view taken along the line AA of FIG.

FIG. 5 is a top view (a) of the empty pallet feeder and a side view (b) of the palletizer and the empty pallet feeder.

[Explanation of symbols]

P ... Palletizer, 1 ... Stand, 2 ... Girder, 3 ... Trolley, 4 ... Elevating part, 5 ... Gripping part, 6a, 6b, 6c ',
6c '' ... luggage, 7 ... stopper, 8 ... empty pallet, 9 ...
Conveyor, 10 ... Pull-in conveyor. 11 ... Running rail, 1
2 ... Frame, 13 ... Beam, 14 ... Sidewalk, 15 ... Empty pallet guide, 16 ... Empty pallet supply port, 17 ... Empty pallet transport device. 30 ... Crane, 31 ... Steel belt, 32 ... Belt drum, 33 ... Motor, 34 ... Drive belt, 35
... Lifting tool base, 36 ... Movable claw, 37 ... Fixed claw, 38 ...
Frame, 39 ... Bevel gear, 40 ... Drum drive shaft, 4
1 ... motor shaft pulley, 42 ... driving shaft pulley.

Claims (6)

[Claims] 1. A palletizer having a loading section for loading packages, a means for transporting and supplying empty pallets to the loading section, a means for transporting packages to the loading section, and the package for loading the packages. In a palletizer having a positioning means for positioning the load at a desired position when loading on an empty pallet in the loading section, and a crane provided for the positioning means to lift and transport the load The crane uses a belt body having rigidity as means for hoisting and lowering a lifting / lowering unit equipped with a means for holding luggage by a drum, and the belt body and the drums to which the belt body is mounted are provided at a plurality of places. A palletizer characterized in that the belt body is arranged so as to have a 90-degree direction component. 2. The crane comprises a frame, four drums arranged in a 90 degree direction with respect to each other through a drive motor on the frame through a drive unit including a bevel gear unit, and the four drums. It is characterized by further comprising: four steel belts each fastened to an upper end thereof; an elevating part coupled to the lower ends of these four steel belts; and a means for holding a load mounted on the elevating part. The palletizer according to item 1. 3. An empty pallet feeding device comprising an empty pallet carrying device and a traveling rail provided above the palletizer and adapted to run the empty pallet carrying device, wherein the empty pallet carrying device is configured as a crane. The crane uses a belt body having rigidity as a means for hoisting and lowering the elevating unit equipped with a means for holding an empty pallet by a drum, and the belt body and the drums on which the belt body is mounted are provided at a plurality of places. An empty pallet supply device, wherein the empty pallet supply device is provided so that the belt body is oriented so as to have a component in a 90-degree direction. 4. The crane comprises a frame, four drums arranged in a 90 degree direction with respect to each other through a drive motor on the frame via a drive unit including a bevel gear unit, and the four drums. It is characterized by comprising four steel belts each fastened to the upper end, an elevating part connected to the lower ends of these four steel belts, and an empty pallet holding means equipped to the elevating part. The empty pallet supply device according to claim 3. 5. An empty pallet supply device for supplying empty pallets to a palletizer, which is located between an empty pallet storage location and a route for transporting the empty pallets to the palletizer, and is located near the palletizer. An empty pallet supply device, characterized in that an intermediate empty pallet storage area is provided at a place, and the empty pallets are supplied from the intermediate empty pallet storage area. 6. The empty pallet supply device is provided above the palletizer for empty pallet transfer device, and a travel rail for traveling the empty pallet transfer device; and above the palletizer, the travel pallet. The empty pallet supply device according to claim 5, comprising a sidewalk provided below the rail, and an intermediate empty pallet storage area provided on the sidewalk.