JPS62191313A - Pallet conveyor - Google Patents

Abstract

PURPOSE:To make a pallet deliverable at the same place, by setting up both first and second longitudinal feed conveyors, delivering the pallet, as adjoined to each other, as well as setting up a carry-in part of an actual pallet and a carry-out part of an empty pallet adjacently with a transfer conveyor and a horizontal feed conveyor. CONSTITUTION:An actual pallet is conveyed by an elementary conveyor 41a of a first longitudinal feed conveyor 41, and an empty pallet after its load is conveyed by a depalletizer is conveyed by another elementary conveyor 41b. This empty pallet is transferred onto a transfer conveyor 43, and when the empty pallet iis mounted on this transfer conveyor 43, this conveyor 43 is tilted downward by a tilting cylinder with a shaft 53 as the fulcrum, whereby the empty pallet is transferred to a horizontal feed conveyor running beneath and mounted on another transfer conveyor 44 as well. Afterward, the conveyor 44 and a second longitudinal feed conveyor 42 both are operated and thereby the empty pallet is transferred to an adjacent position in parallel with a carry-in part. With this constitution, an operator is able to recover the empty pallet at a position where the actual pallet is carried in, thus operation efficiency is improvable.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a pallet conveying device.

(Prior Art) As shown in Japanese Unexamined Patent Publication No. 59-163237, the applicant previously accepted cargo shipped from a factory, etc. into an inlet section, fed it to a conveyor in each stage by a depalletizer, and transported it to a vehicle. We are proposing a cargo conveyance system that sequentially loads cargo using a loading device that can be driven into cargo boxes.

(Problem to be Solved by the Invention) In such a cargo conveyance system, the loading section for actual pallets loaded with luggage and the loading section for empty pallets processed by the depalletizer are located at separate locations. Because of the arrangement, loading of actual pallets and unloading of empty pallets must be carried out in separate systems, which has the disadvantage of complicating the work.

The present invention has been made in view of the above-mentioned points, and is a pallet system that enables efficient pallet collection by installing a loading section for actual pallets and a loading section for empty pallets at adjacent positions. A conveyance device is provided.

(Technical means for solving the problem) The present invention provides a first vertical conveyor that conveys pallets from an inlet section toward a depalletizer, and a second vertical conveyor that is installed parallel to the first vertical conveyor. and the first
a horizontal conveyor disposed between the rear end of the vertical conveyor and the front end of the second vertical conveyor; and a horizontal conveyor installed at the rear end of the first vertical conveyor and the front end of the second vertical conveyor, respectively. It consists of a transfer conveyor that transfers pallets to and from a feed conveyor.

(Example) Regarding an example of the present invention, a baggage conveyance device will first be described based on FIG.

Baggage 1 palletized and stacked on pallet 12
is carried into the carry-in section 10 by a forklift (not shown) or the like, and is supplied to the depalletizer 16 consisting of a table lifter and a pickup roller via a first vertical conveyor 41 (the carry-in direction is the direction of arrow A) of a pallet conveyance device, which will be described later. Thereafter, the stacked luggage 1 is carried out one by one.

Empty pallets 12 are loaded onto a pallet stocker (not shown) via a second vertical conveyor 42 (the unloading direction is in the direction of arrow B) of the pallet conveying device.

17 is a conveyor, and a delivery roller conveyor 18 sends out the baggage 1 depalletized by the depalletizer 16;
The cargo 1 moves up and down between the delivery roller conveyors 18 in a direction perpendicular to the feeding direction of the delivery roller conveyors 18.
It consists of a delivery belt conveyor 19 that sends out a delivery belt, a delivery conveyor 20 that turns in an S-shape, and a first telescopic conveyor 21 provided at the tip of the delivery conveyor 20.

Reference numeral 22 denotes a baggage attitude control device, which includes a measuring device 23 for measuring the size of the baggage 1, a posture changing device 24 for changing the conveying direction of the baggage 1 by 90 degrees according to the size of the baggage 1, and a baggage attitude control device 22 for adjusting the conveyance direction of the baggage 1 to one side. Extrusion device 2 for returning the loaded baggage 1 to the middle part
5, and is provided in the middle of the feed conveyor 20.

Reference numeral 26 denotes a loading device, which includes a second telescopic conveyor 27 that can extend and retract into the cargo box 2 of a truck, sea container, etc., an inclined conveyor 28 provided at the tip of this telescopic conveyor 27, and a loading device provided at the tip of this inclined conveyor 28. Horizontal feed conveyor 29
It is equipped with a loading device 30 that can be raised and lowered and has a width that is approximately the same as the width of the shipping box. It is provided on the truck 31.

Reference numeral 32 denotes a general truck, which includes a platform 33 on which a pallet conveying device, a depalletizer 16, a conveyor 17, and a loading device 26, which will be described later, are mounted, wheels 34 provided on the lower surface of the platform 33,
The whole truck 32 is made up of a dog board 35 connected to the cargo box 2, and can be operated by interlocking four wheels 34, and can run in the front-rear direction or left-right direction, or can spin turn.

By the way, a pallet conveying device 40 shown in FIG. 2 is installed 7 on the platform 33, and this pallet conveying device 40 will be described in detail below.

This pallet conveying device 40 includes a pair of first and second vertical conveyors 41 and 42 laid in parallel.

The vertical conveyor 41.4 is located behind the first vertical conveyor 41 and in front of the second vertical conveyor 42.
Transfer conveyor 43.44 that can be connected to or detached from 2.
And this transfer conveyor 43゜44 is the vertical feed conveyor 4.
1.42 and a transverse conveyor 45 that connects them when they are separated.

Since there is almost no difference in the basic structure of these conveyors 41 to 45, their structure will be explained using the vertical feed conveyor 41 as an example.

A pair of cases 51 and 51 are installed on the base plate 33, and a connected driven shaft 52 and a connected driving shaft 53 are installed at the front and rear ends of the cases.
Conveyor sprockets 54, 54 are pivotally supported via.

The conveyor sprocket 54 is suspended from the chain conveyor 55.

Further, one end of the connecting drive shaft 53 projects beyond the case 51, and a sprocket 56 is provided there.

On the other hand, a sprocket 57 is provided on the output shaft of the electric motor M connected to the base plate 33, and these sprockets) 5
A chain 58 is suspended between 6 and 57.

Incidentally, a chain conveyor 55 is provided on the upper surface of the case 43.
A guide 59 is installed to support and guide the chain conveyor 55 to prevent the chain conveyor 55 from deflecting due to the load (pallet).

In this way, the basic structure of each conveyor is case 51,
Connected driven shaft 52, connected drive shaft 53. It consists of a conveyor sprocket 54, a chain conveyor (55° chain or sprocket) 56, 57, 58, and an electric motor M.

Here, the first vertical conveyor 41 includes an element conveyor 41a that conveys a pallet loaded with the baggage 1 (hereinafter referred to as an actual pallet) from the carry-in section lO to the depalletizer 16, and a pallet after the baggage l has been conveyed at the depalletizer 16. It is composed of an element conveyor 41b that conveys (hereinafter referred to as empty pallets).

Further, the element conveyor 41 of the first vertical conveyor 41
A transfer conveyor 43 is located behind b, and a case 51 constituting this transfer conveyor 43 is rotatably supported around a connecting drive shaft 53.
By the telescoping operation of the tilting cylinder 60 disposed between the base plate 33 and the base plate 33, the first vertical conveyor 41 is moved to a connection position where its conveying surface is flush with the element conveyor 41b, and to a disconnection position where the conveyance surface is flush with the element conveyor 41b. You can choose between the locations.

Further, a second vertical conveyor 42 and a transfer conveyor 44 are installed in parallel with the first vertical conveyor 41 and transfer conveyor 43.

This second vertical conveyor 42 is also composed of element conveyors 42a and 42b, but since it only needs to have the function of conveying empty pallets together with the transfer conveyor 44, the ends of the cases 51 overlap. Therefore, the connecting drive shaft 53 and the connecting driven shaft 52 are configured to be partially used,
The chain conveyor is linked with a single drive source (electric motor Ml).

Further, between the aforementioned transfer conveyors 43, 44, these transfer conveyors 43, 44 are connected to the vertical feed conveyor 41.
A lateral conveyor 45 for laterally conveying empty pallets in a state separated from 42 is arranged as shown in FIG.

In this cross-feeding conveyor 45, the case 51 is arranged in three parts, corresponding to the vertical rotation of the transfer conveyors 43 and 44 by the tilting cylinder 60, as described above, and the left and right parts of the case 51 are divided into three parts. A chain conveyor 55, which suspends a conveyor sprocket 54 provided at the end, is suspended by an appropriate conveyor sprocket 54a so as not to interfere with the transfer conveyors 43 and 44 at their detached positions, and is connected to an electric motor M.
2.

Next, the operation of the present invention will be explained.

First, an actual pallet that has been transported to the carry-in section IO by a forklift or the like is placed on the element conveyor 41a of the first vertical conveyor 41.

Thereafter, when a start switch (not shown) is operated, the first vertical conveyor 41 is activated and the actual pallet is conveyed to the depalletizer 16. That is, since the electric motor M is driven to rotate normally, the element conveyors 41a and 41b are operated, and the actual pallet is transferred to the left in FIG.
When reaching the predetermined position 1b, the electric motor M stops.

Then, a table lifter (not shown) constituting the depalletizer 16 starts to rise, and pick-up rollers (not shown) cut out the cargo 1 on the actual pallet in each row of each stage.
The cargo is loaded into the cargo box 2 via the conveyor 17 and the implantation device 26.

When all the loads 1 on the pallet are cut out, the table lifter descends and the empty pallet is again placed on the chain conveyor 55 of the element conveyor 41b.

When @ position of empty pallet is detected, transfer conveyor 4
3 is normally located at the raised position (the chain line position in FIG. 3) due to the extension of the tilting cylinder 6o.
3 are respectively driven via electric motors M, the empty pallet is further conveyed in the rear direction.

When an empty pallet is located on the transfer conveyor 43, it is detected and transferred to the element conveyor 41 of the first vertical conveyor 41.
b and the transfer conveyor 43 are stopped.

In this state, the conveying surface of the transfer conveyor 43 is located above the conveying surface of the traversing conveyor 45 (see the chain line position in FIG. 3), and there is no interference between the two.

After that, when the tilting cylinder 60 contracts, the conveyance surface of the transfer conveyor 43 descends, so that the empty pallet is transferred from the transfer conveyor 43 to the cross-feed conveyor 45.
be transferred to.

Next, when the overturning of the transfer conveyor 44, that is, the contraction of the tilting cylinder 60, is detected, the electric motor M2 of the traverse conveyor 45 is activated, and the empty pallet is conveyed downward in FIG.

When the empty pallet is conveyed to a position facing the transfer conveyor 44, the drive of the lateral conveyor 45 is stopped, and the transfer conveyor 44 is moved to the second position by the extension of the tilting cylinder 60.
It rises to a connection position flush with the conveying surface of the vertical conveyor 42.

As a result, the empty pallet is transferred from the traverse conveyor 45 to the transfer conveyor 44.

The empty pallet conveyed to the transfer conveyor 44 in this way is then transferred to the electric motor M of the second vertical conveyor 42.
1, the transfer conveyor 44 and the second vertical feed conveyor 42 are driven simultaneously, so that the transfer conveyor 44 and the second vertical conveyor 42 are driven simultaneously, so that the transfer conveyor 44 and the second vertical conveyor 42 are transported to the unloading section.

In the embodiment of the present invention, the pallet is directly supplied to the depalletizer, but if the loading pattern of the cargo loaded on the pallet is not constant, for example, the pallet may be supplied directly to the depalletizer 16 through the fork insertion opening formed in the pallet. In response to the case where the pallet direction does not match, a table T is disposed at the front of the first vertical conveyor so that it can be raised and lowered and rotated as shown by the chain line in FIG. 2, and the pallet direction is changed by 90 degrees. It may be supplied to the depalletizer after matching the depalletizing direction.

In this case, the table T1 may be installed at the rear of the first vertical conveyor so as to be able to rise and fall and turn freely, and may be turned again by 90 degrees to cope with the return.

Furthermore, it will be more efficient if a pallet stocker S is provided in the unloading section and a plurality of empty pallets are stacked on top of each other.

(Effects) As described above, according to the present invention, since the loading section for actual pallets and the loading section for empty pallets are installed in adjacent positions, loading the actual pallets via a cargo handling vehicle such as a forklift is not possible. Workers can collect empty pallets on the spot without having to detour the cargo handling vehicle, resulting in extremely high work efficiency.

[Brief explanation of drawings]

The drawings illustrate embodiments of the present invention, and FIG. 1 is an overall perspective view of a cargo conveyance device equipped with the device of the present invention, FIG. 2 is an overall plan view of a pallet conveyance device, and FIG. A side view taken from line X-X, Figure 4 is a sectional view taken from line Y-Y in Figure 2,
Figure 5 is Figure 2 Z-Z! ! FIG. l... Luggage, 2... Packing box, lO... Loading section, 17
...Conveyor, 26...Loading design, 32...
Overall truck, 41.42...Longitudinal reconveyor, 43.4
4-φ transfer conveyor, 45...e horizontal feed conveyor

Claims (1)

[Claims] (1) In a device in which cargo loaded on a pallet is received from a carry-in section and supplied via a depalletizer, and empty pallets are transferred to a carry-out section, a first step is provided for transporting the pallet from the carry-in section in the direction of the depalletizer. A first vertical conveyor, a second vertical conveyor installed parallel to the first vertical conveyor, and a horizontal conveyor installed between the rear end of the first vertical conveyor and the front end of the second vertical conveyor. It is composed of a feed conveyor and a transfer conveyor that is installed at the rear end of the first vertical conveyor and the front end of the second vertical conveyor and transfers pallets between the horizontal conveyor and the first vertical conveyor. A pallet conveying device, characterized in that a pallet loading section is disposed adjacent to the front end thereof, and a pallet unloading section is disposed adjacent to the rear end of the second vertical conveyor.