JPH07215468A - Method for loading article - Google Patents

Abstract

PURPOSE:To load arbitrary articles with different height at an arbitrary position by arranging succeeding articles on a conveyor located above the precedingly loaded articles, and shifting the precedingly loaded articles forward. CONSTITUTION:A pallet P loaded on a table 2031 of an elevating device 2003 is elevated to the position immediately below an article supplying conveyor (BC) 2002, and the pallet P is retracted to the position of the forward end of the BC 2002 by a moving device 2004. When a detector detects a leading article Ga, the pallet P is advanced by the length of the article Ga, and the article Ga is loaded on the pallet P. When the pallet P continues the lowering, and the top surface of the article Ga on the pallet P is lowered below the BC 2002, the pallet P is retracted to the position of the forward end of the BC 2002. When the following article Gb arrives at the forward end part of the BC 2002, the pallet P is advanced, and the article Gb is loaded on the preceding article Ga.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for loading articles, and more particularly to a method for loading articles suitable for loading non-slip articles.

[0002]

2. Description of the Related Art As a conventional technique relating to a method for stacking articles, one described in Japanese Patent Laid-Open No. 57-77123 is known.

The conventional technique described in the above publication will be described in Japanese Patent Application Laid-Open No. 57-77123.
There is described a surface unit gripping device that includes two pairs of box body pressing devices that face each other in the front-rear direction and the left-right direction, and that presses and grips the four surfaces of a box body group such as a cardboard box almost at the same time.

[0004]

However, the above-mentioned conventional techniques have the following problems.

That is, since the surface-unit gripping device described in Japanese Patent Laid-Open No. 57-77123 handles box bodies (articles) on a surface-by-surface basis, it has a plurality of different heights. It is not possible to stack any kind of product at any position, such as that the above item cannot be stacked.

[0006] Therefore, an object of the present invention is to provide a method for stacking articles of any kind, such as articles having different heights, at any position.

[0007]

SUMMARY OF THE INVENTION The present invention aligns articles that follow a conveyor located above a previously loaded article and moves the previously loaded articles forward. However, the above object is achieved by providing an article stacking method characterized in that articles loaded on the conveyor are loaded onto the articles loaded in advance.

[0008] It is preferable to load the succeeding articles at an interval according to the height of the preceding article.

[0009]

According to the method of loading articles of the present invention, articles of arbitrary types such as different heights can be loaded at arbitrary positions. Further, even articles that are not slippery can be reliably stacked on articles that have been stacked in advance.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The method of loading articles according to the present invention will be described below together with an example of article loading equipment suitable for carrying out the method.

FIG. 1 is a perspective view partially showing an embodiment of an article arranging facility, FIG. 2 is an elevational view of an essential part showing an example of an article arranging facility, and FIG. 1 is an enlarged side view showing a downstream end of the gravity roller conveyor (tributary line) shown in FIG. 1, FIG. 4 is a plan view of FIG. 3, FIG. 5 is a plan view showing an embodiment of an article arranging section, and FIG. FIG. 7 is a side view partially showing an example of the article arranging section, and FIG. 7 is a perspective view showing an example of an article stacking apparatus. In these drawings, 1 stores articles G by type (product type). In the gravity roller conveyor as a tributary line, a plurality of rows (5 rows) are arranged in the direction along the conveyer conveyor 2 as a main line, and a plurality of rows (two rows) are arranged in the up-down direction with the tip side inclined downward. ,
These gravity roller conveyors 1 constitute a fluidized shelf F having a frontage of a plurality of rows and a plurality of stages. Also,
The transport conveyor 2 is a drive roller conveyor arranged in stages along the above-mentioned frontage, and is provided in two stages in the vertical direction.
An article take-out device 3 is provided at the downstream end of each gravity roller conveyor 1. Also,
Reference numeral 4 denotes an up-and-down conveyance device that is arranged downstream of the two-stage conveyance conveyor 2 and that conveys the articles G in a vertical direction at a constant pitch. The article conveyor 41 has a skewered (fork) -shaped article placement section 411. And an endless rotating body 42, and the endless rotating body 4
2, the article transport tool 41 is continuously rotated. Further, reference numeral 1001 denotes a gravity roller conveyor (article arranging section) in which the front end side for accommodating the laid-out articles G is inclined low, and is arranged in a plurality of rows (5 rows) in the direction along the conveyor 1002. There is. An article take-out device 1003 is provided at the downstream end of each gravity roller conveyor 1001. Reference numeral 2000 denotes an article stacking device that stacks the articles G sorted by the article sorting section 1001 on the pallet P. The pallet transport conveyor 2001 and the article G are the pallets P or the articles previously supplied. A plurality of rows of article supply conveyors 20 serving as the conveyors of the present invention for supplying onto G
02, an elevating device 2003 for elevating and lowering the pallet P, and a moving device 2004 for moving the elevating device 2003 along the supply direction of the article G, and at least one article supply conveyor 2002 is provided along the supply direction of the article G. The articles G are configured to be able to move forward and backward, and the articles G loaded in the aggregate consisting of a plurality of rows are stacked on the pallet P via the article supply conveyor 2002. Thus, the articles G stored in the article storage unit 1 arranged in a plurality of rows and a plurality of stages.
Is taken out, and the taken-out articles G are arranged in the article arrangement section 1001 arranged in a plurality of rows, and then the arranged articles G are taken out and positioned above the articles G previously stacked. The article supply conveyor 2002 loads the succeeding articles G (at intervals according to the height of the preceding article G),
The articles G previously stacked on the lifting device 2003 are moved forward by the moving device 2004 (the article supply conveyor 20).
(The other side of 02) while moving to the article supply conveyor 200
The articles G sorted in 2 are stacked on the articles G previously stacked.

Explaining each part in the above embodiment, the gravity roller conveyor 1 comprises a plurality of rollers 1.
A pair of rail frames 12 provided with 1 are arranged in an inclined shape, and the article G supplied onto the gravity roller conveyor 1 is self-propelled on the roller 11 by its own weight and stored, and then the article take-out device 3 Are taken out by the conveyor 2. Incidentally, 1a, 1b, 1c, 1d, 1e are gravity roller conveyors 1f, 1 arranged on the lower side.
Reference numerals g, 1h, 1i, and 1j denote gravity roller conveyors arranged on the upper side.

Further, the conveyor 2 is arranged so as to connect the article take-out device 3 provided at the downstream end of the gravity roller conveyors 1 arranged side by side, and the conveying speed is 25 m.
/ Min (416.7 mm / sec) drive roller conveyor,
A plurality of stages (two stages) are provided in the vertical direction so as to be substantially orthogonal to the gravity roller conveyor 1, and a rubber band (not shown) stretched between the roller 21 and the line shaft 22 (not shown) in a figure 8 shape. The rotation of the line shaft 22 is transmitted to the roller 21. Further, the line shafts 22 of the respective conveyors 2 are connected to each other by a chain and are driven by the same motor. A pulse encoder (not shown) is attached to one of the line shafts 22.

Further, the article take-out device 3 has shafts 33, 3
A pair of rail frames 32 having a plurality of rollers 31 which are vertically swung by an air cylinder 35 and a lever 36 with a fulcrum 4 as a fulcrum, and a stopper 37 for locking an article G which is self-propelled in an inclined direction. When the air cylinder 35 is at the lower end, the inclination of the rail frame 32 substantially matches the inclination of the rail frame 12, and the upper end of the stopper 37 projects from the upper surface of the roller 31. . Then, when an article take-out command is issued, by operating the air cylinder 35,
The upper end of the stopper 37 is lowered from the upper surface of the roller 31, and the inclination of the rail frame 32 is adjusted.
The inclination is made larger than the inclination, and the tip end article G locked by the stopper 37 is taken out. At this time, since the rear end of the rail frame 32 is higher than the surface of the roller 11 of the rail frame 12, the succeeding article G is locked at the rear end of the rail frame 32 and is stored on the gravity roller conveyor 1. Only one G can be taken out to the conveyor 2, and the taken-out articles G are joined to the conveyor 2 by the wheel rail 38.

Further, the vertical transport device 4 disposed downstream of the two-stage transport conveyor 2 is an article transport tool 4 having a skewered (fork) -shaped article placing portion 411 and a guide roller 412.
An endless chain (rotating body) 42 stretched in a substantially rectangular shape by one and four sprocket wheels 43, a first guide frame 44 arranged along the rotation locus of the endless chain 42, and the endless chain 42. The second guide frame 45, which has substantially the same shape as the rotation locus and is vertically and horizontally displaced, and an auxiliary guide frame 46 for keeping the article transporting tool 41 in a constant posture, are provided with four ( In FIG. 2, only two of the article conveying tools 41 are fixed to the endless chain 42 having a speed of 30 m / min (1830 m).
m) is rotatably attached, and the article conveying tool 41 kept in a constant posture (generally horizontal) by the first guide frame 44, the second guide frame 45, and the auxiliary guide frame 46 is continuously arranged in the vertical direction. It is designed to rotate.

Reference numeral 5 denotes a transfer conveyor which is arranged at the downstream end of the upper transfer conveyor 2 for transferring the article G to the vertical transfer device 4, and is a fixed fork formed by seven endless chains. It consists of a skewer-shaped conveyor 51, a movable skewer-shaped conveyor 52 which is formed in a fork shape with six endless chains and an air cylinder for sliding (not shown), and the six endless chains of the movable skewered conveyor 52 are for sliding. The air cylinders move the gaps between the seven endless chains of the fixed skewer-shaped conveyor 51 or the seven skewers (forks) of the article placement unit 411 along the conveyance direction of the article G. Shape Conveyor 52 and Article Placer 4
11 and 11 are crossable. A stopper 521 is provided at the tip of the moving skew conveyor 52.

Further, 6 is a transfer conveyor which is arranged at the downstream end of the lower transfer conveyor 2 for transferring the article G to the vertical transfer device 4, and is a fork-shaped fixed member composed of 6 endless chains. It is composed of the skewer-shaped conveyor 61, and the six endless chains of the fixed skewer-shaped conveyor 61 are the article mounting portions 411.
It is arranged in the gap between the seven skewers (forks), and the fixed skewer-shaped conveyor 61 and the article placing portion 411 are configured to be crossable with each other. A stopper 611 is provided at the tip of the fixed skewer conveyor 61.

Reference numeral 7 denotes a take-out conveyor for taking out the article G from the vertical conveying device 4, which is a fixed skewer-like conveyor 71 which is formed in a fork shape by six endless chains and a drive roller arranged downstream thereof. The fixed skewer conveyor 71 and the six endless chains of the fixed skewer-shaped conveyor 71 are arranged in the gaps between the seven skewers (forks) of the article placing portion 411. And are configured to be crossable.

Further, a confluence control device (not shown) is provided, and the transfer conveyor 2 has a virtual space β of a constant length (pitch).
Is set, and when the set virtual space β reaches a position facing the gravity roller conveyor 1 storing the articles G to be merged in the virtual space β, the articles G to be merged by the article take-out device 3 Are controlled to be taken out.

Next, a method of taking out the articles G stored in the gravity roller conveyor 1 of the above-mentioned article arranging facility and arranging the articles on the take-out conveyor 7 will be described.

1a, 1b, 1c, 1d, 1e are gravity roller conveyors 1f, 1g, 1 arranged on the lower side.
h, 1i, and 1j are gravity roller conveyors arranged on the upper side, and the intervals between the five rows of gravity roller conveyors 1 arranged in parallel along the lower and upper conveyor conveyors 2 are arranged. When the distance is 700 mm, the fifth uppermost gravity roller conveyor 1 from the downstream end
e, the distance from 1j, that is, the offset value α, is 700 mm for the gravity roller conveyors 1d, 1i adjacent to the gravity roller conveyors 1e, 1j, 1400 mm for the gravity roller conveyors 1c, 1h adjacent to the gravity roller conveyors 1d, 1i, and the gravity value Gravity roller conveyor 1b adjacent to roller conveyors 1c and 1h,
1g is 2100mm, gravity roller conveyor 1b,
The gravity roller conveyors 1a and 1f adjacent to 1g are 2800 mm.

The length of the gravity roller conveyor 1, that is, the dimension in the direction of the conveyor 2 is 600 m at maximum.
The articles G of various sizes up to m, for example, the article Ga on the gravity roller conveyor 1a, the article Gb on the gravity roller conveyor 1b, and the article Gj on the gravity roller conveyor 1j, respectively. They are stored (the article G is shown in the same size in FIG. 8).

Then, on the take-out conveyor 7, for example,
The ten articles G are in the following order: the articles Ga, Gg, G
When there is a load alignment command so as to be taken out by j, Gj, Gd, Gi, Gi, Gh, Gj, and Gd, the timing at which the articles G transported on the respective transport conveyors 2 join the vertical transport device 4 ( Depending on the position), the phase difference γ is set to the timing at which the articles G are merged from the gravity roller conveyor 1 for each of the conveyors 2 [the phase difference γ of the upper conveyor 2 with reference to the lower conveyor 2]. The gap between the transfer conveyor 5 and the transfer conveyor 6 in the step direction (70
0 mm) ÷ speed of the endless chain 42 (30 m / min) =
1.4 seconds "] is added, and the phase difference γ is added to the timing of joining the articles G from the gravity roller conveyor 1 to each of the conveyors 2 [0 seconds at the timing of joining the articles G to the lower conveyor conveyor 2]. Add 1.4 seconds to the timing of joining the articles G to the upper conveyer 2]
Then, the articles G are transferred from the gravity roller conveyor 1 to each of the conveyors 2 at a constant pitch [an attachment interval of the article conveyor 41 to the endless chain 42 (1830 mm) ÷
Speed of endless chain 42 (30 m / min) = 3.66 seconds]
The calculation and control are performed so that the articles G that have been merged with each other are merged with each other by the vertical transport device 4, and the desired articles G are merged in a desired order.

That is, the article Ga first taken out to the take-out conveyor 7 is taken out from the gravity roller conveyor 1a, but since the offset value α of the gravity roller conveyor 1a is located at the most downstream of the offset value α of 2800 mm, from the start of load alignment. , G delayed by the offset value α
a is taken out. That is, 2800 mm from the start of packing
÷ 416.7 mm / second = 6.72 seconds later, the article Ga is transferred from the gravity roller conveyor 1a to the lower conveyor conveyor 2
The article take-out command is given to the article take-out device 3 provided at the downstream end of the gravity roller conveyor 1a. Since the phase difference γ of the lower conveyer 2 is 0 second, it is not necessary to add the phase difference γ to the above time.

The article Gg to be taken out to the take-out conveyor 7 next to the article Ga is a gravity roller conveyor 1 arranged along the upper conveyor conveyor 2 different from the article Ga.
Since it is stored in g, the phase difference γ of 1.4 seconds is added so that it can be merged.
At a fixed length [transport pitch of the article transport tool 41 (3.66
Second) x transport speed of transport conveyor 2 (25 m / min) = 15
25 mm] of the virtual space β is continuously set according to the merging order of the articles G, and when the predetermined virtual space β reaches a position facing the articles G to be joined, the articles G are taken out to the conveyor 2. An article take-out command is given to the article take-out device 3 provided at the downstream end of the gravity roller conveyor 1, and the article G is fed at a constant pitch (3.66 seconds,
That is, since they are joined at an interval of 1525 mm), the take-out time of the article Ga transferred to the up-and-down conveyor 4 to the conveyor 2 excluding the offset value α and the phase difference γ, that is, 0 seconds later. , The phase difference γ / 1.4 seconds and the time required for moving the virtual space βa set on the transport conveyor 2, that is, 1525 mm ÷ 416.7 mm / second =
After 5.06 seconds after adding 3.66 seconds, the offset value α of the gravity roller conveyor 1g is 2100 mm, that is, 2100 mm / 416.7 mm / second = 5.04 seconds after 10.1 seconds, the gravity roller conveyor 1 g. An article take-out command is given to the article take-out device 3 provided at the downstream end of the gravity roller conveyor 1g so that the article Gg is taken out into the virtual space βg set in the upper conveyer conveyor 2.

The article Gj to be taken out to the take-out conveyor 7 next to the article Gg is stored in the gravity roller conveyor 1 in the same stage as the article Gg, and thus the article G stored in the gravity roller conveyor 1 in the same stage is When continuously taken out of the conveyor 2 and merged,
It takes time for the virtual space βg set in the conveyor 2 to move after the take-out time to the conveyor 2 excluding the offset value α of the article Gg transferred to the vertical conveyor 4 first, that is, 5.06 seconds. After a lapse of time, that is, 8.72 seconds after adding 3.66 seconds, the article take-out command is issued from the gravity roller conveyor 1j so that the article Gj is taken out from the gravity roller conveyor 1j to the virtual space βj set on the upper-stage side conveyor 2. It is given to the article take-out device 3 provided at the downstream end. Since the offset value α of the gravity roller conveyor 1j is 0 mm, it is not necessary to add the offset value α to the above time.

Since the article Gj is continuously taken out after the article Gj, the above-mentioned taking-out time, that is, the time required for the virtual space βj set in the conveyor 2 to move after 8.72 seconds, that is, 3. After 12.38 seconds after adding 66 seconds, an article take-out command is provided at the downstream end of the gravity roller conveyor 1j so as to take out the article Gj from the gravity roller conveyor 1j to the virtual space βj set in the upper conveyor conveyor 2. It is given to the obtained article take-out device 3.

The article Gd taken out to the take-out conveyor 7 next to the article Gj is stored in the gravity roller conveyor 1 on the lower stage side different from the article Gj. At the same time, the article Gj transferred to the vertical transport device 4 is set to the transport conveyor 2 after the take-out time to the transport conveyor 2 excluding the offset value α and the phase difference γ, that is, 10.98 seconds. The time required for the virtual space βj to move, that is, 3.6
14.64 seconds after adding 6 seconds, the offset value α of the gravity roller conveyor 1d is equal to 700 mm ÷ 41.
After 16.32 seconds after adding 6.7 mm / second = 1.68 seconds, the article take-out command is issued so that the article Gd is taken out from the gravity roller conveyor 1d into the virtual space βd set in the lower conveyor conveyor 2. It is given to the article take-out device 3 provided at the downstream end of the conveyor 1d.

Since the article Gi taken out to the take-out conveyor 7 after the article Gd is stored in the gravity roller conveyor 1 on the upper stage side different from the article Gd, the phase difference γ of 1.4 seconds is added to join the article Gi. In addition to the above, at the time of taking out to the conveying conveyor 2 excluding the offset value α and the phase difference γ of the article Gd previously taken out to the vertical conveying device 4, that is, 14.64 seconds later, the phase difference γ 1.
4 seconds and the time required for the virtual space βd set on the conveyor 2 to move, that is, 3.66 seconds are added.
After 7 seconds, the offset value α of the gravity roller conveyor 1i is 700 mm, that is, 700 mm ÷ 416.7 mm /
After 21.38 seconds after adding the second = 1.68 seconds, an article take-out command is issued downstream of the gravity roller conveyor 1i so as to take out the article Gi from the gravity roller conveyor 1i to the virtual space βi set in the upper conveyor conveyor 2. It is given to the article take-out device 3 provided at the end.

Since the article Gi is continuously taken out after the article Gi, the time taken for moving the virtual space βi set on the conveyor 2 after the above taking-out time, that is, 21.38 seconds, is 3.66 seconds. The article take-out command is provided at the downstream end of the gravity roller conveyor 1i so that the article Gi is taken out from the gravity roller conveyor 1i to the virtual space βi set in the upper conveyor 2 after 25.04 seconds after the addition of It is given to the take-out device 3.

Since the article Gh taken out to the take-out conveyor 7 next to the article Gi is stored in the gravity roller conveyor 1 in the same stage as the article Gi, the offset value α of the article Gi delivered to the up-and-down conveying device 4 first. The removal time to the conveyor 2 excluding the minutes, that is, the time required for moving the virtual space βi set in the conveyor 2 after 23.36 seconds, that is, 27.02 seconds after adding 3.66 seconds, Offset value α of gravity roller conveyor 1h
Minute 1400mm, that is 1400mm ÷ 416.7mm /
After 30.38 seconds in which seconds = 3.36 seconds are added, an article take-out command is issued downstream of the gravity roller conveyer 1h so as to take out the article Gh from the gravity roller conveyer 1h to the virtual space βh set in the upper conveyer conveyor 2. It is given to the article take-out device 3 provided at the end.

Since the article Gj taken out to the take-out conveyor 7 next to the article Gh is stored in the gravity roller conveyor 1 in the same stage as the article Gh, the offset value α of the article Gh transferred to the vertical conveying device 4 first. The removal time to the transport conveyor 2 excluding the minutes, that is, 27.02 seconds later, the time required for the virtual space βh set in the transport conveyor 2 to move, that is, 30.68 seconds after adding 3.66 seconds, An article take-out command is given to the article take-out device 3 provided at the downstream end of the gravity roller conveyer 1j so as to take out the article Gj from the gravity roller conveyer 1j to the virtual space βj set in the upper conveyer conveyor 2. Since the offset value α of the gravity roller conveyor 1j is 0 mm, it is not necessary to add the offset value α to the above time.

Since the article Gd taken out to the take-out conveyor 7 next to the article Gj is stored in the gravity roller conveyor 1 on the lower stage side different from the article Gj, the phase difference γ of 0 second is added so that the article Gd is merged. At the same time, the article Gj delivered to the up-and-down transport device 4 is set to the transport conveyor 2 after the take-out time to the transport conveyor 2 excluding the offset value α and the phase difference γ, that is, 29.28 seconds. The time required for the virtual space βj to move, that is, 3.6
32.94 seconds after adding 6 seconds, the offset value α of the gravity roller conveyor 1d is 700 mm / 41
After 34.62 seconds after adding 6.7 mm / second = 1.68 seconds, the article take-out command is issued so that the article Gd is taken out from the gravity roller conveyor 1d into the virtual space βd set in the lower conveyer conveyor 2. It is given to the article take-out device 3 provided at the downstream end of the conveyor 1d.

A value obtained by multiplying the time until each article G is taken out from the gravity roller conveyor 1 by the computer (not shown) as described above and the transportation speed 416.7 mm / sec of the transportation conveyor 2 is obtained. , The transport distances of the respective virtual spaces β from the start of the load alignment until the respective articles G are taken out. Therefore, the transport distance of the virtual space β during one pulse of the pulse encoder attached to the line shaft 22 of the transport conveyor 2 is excluded from the transport distance of the virtual space β from the start of load alignment until each article G is taken out. The obtained value is a pulse value from the start of the load arranging at which the respective articles G should be taken out. Therefore,
The computer transmits the pulse value from the start of the packing and the number of the gravity roller conveyor 1 from which each article G is to be taken out to a sequencer (not shown). The sequencer receiving the data stores the pulse value from the start of the load alignment and the number of the gravity roller conveyor 1 from which the articles G should be taken out, and starts counting the pulses of the pulse encoder simultaneously with the start of the load alignment. The air cylinder 35 of the article take-out device 3 provided at the downstream end of the gravity roller conveyor 1 which matches the commanded pulse value is operated to take out a predetermined article G to the conveyor 2.

As described above, the articles G merged at a constant pitch from the plurality of gravity roller conveyors 1 are conveyed to the transfer conveyors 5 and 6 arranged at the downstream end portions of the respective conveyors 2 and vertically. When the article placing section 411 of the conveying device 4 reaches the position where the fixed skewer conveyor 61 or the movable skewer conveyor 52 intersects, the article G is continuously scooped up by the article placing section 411 passing from the lower side to the upper side. Then, the articles are transferred to the article transport tool 41 and merged. When the article G reaches the loading section of the fixed skew conveyor 51 of the delivery conveyor 5, the moving skew conveyor 52 is moved to a position where it crosses the article placement section 411, and the article G is received by the article transport tool 41. After being delivered, the original state is restored (however, when the succeeding article G is delivered from the moving skew conveyor 52 to the article conveying tool 41, the succeeding article G is
Is returned to the original state after being delivered to the article transport tool 41). In addition, according to the timing (position) at which the articles G conveyed on the respective conveyors 2 are delivered to the article conveyor 41, the timing at which the articles G are merged from the plurality of gravity roller conveyors 1 for each conveyor 2 is set. Since the phase difference γ is set and the phase difference γ is added to the timing of joining the articles G from the gravity roller conveyor 1 to the respective conveyors 2, the articles G are transferred to the fixed skew conveyor 61 or the movable skew conveyor 52. The arrival timing and the timing at which the article G is picked up by the article placing section 411 are substantially the same.

Further, the articles G merged by the vertical transport device 4
Is taken out by passing the article placement section 411 on which the article G is mounted from the upper side to the lower side of the fixed skewer conveyor 71 of the take-out conveyor 7, and the articles Ga, Gg, Gj, Gj, Gd on the drive roller conveyor 72. , Gi, Gi, G
It is taken out in the order of h, Gj, and Gd.

Thus, the articles G taken out by the driving roller conveyor 72 are arranged to be loaded on the gravity roller conveyor 1001 arranged in a plurality of rows.

The structure around the gravity roller conveyor 1001 will be described. The gravity roller conveyor 1
001 is a slanted arrangement of a pair of rail frames 1012 including a plurality of rollers 1011. The article G supplied onto the gravity roller conveyor 1001 is self-propelled on the rollers 1011 and stored therein. After that, the articles are taken out by the article take-out device 1003 and loaded on the article supply conveyor 2002.

The conveyor 1002 is a drive roller conveyor arranged so as to connect the upstream ends of the gravity roller conveyors 1001 arranged in parallel, and is arranged downstream of the drive roller conveyor 72. At the branch point from the conveyor 1002 to the gravity roller conveyor 1001, a roller 1021 is provided by an air cylinder (not shown).
A branching device 1004 including a pair of endless chains 1041 and the like that are swung so as to project and retract with respect to the upper surface is provided. In addition, the article G is provided on the upstream side of the conveyor 1002.
There is provided a direction changing device (not shown) for changing the conveying direction of 90 ° to the horizontal direction by 90 °.

The article take-out device 1003 is composed of a plurality of rollers 1 which are moved up and down by an air cylinder (not shown).
A pair of rail frames 1032 provided with 031 and a pair of rail frames 1034 provided with a plurality of rollers 1033 and fixedly installed on the downstream side of the rail frame 1032.
And a stopper 1035 provided at the upstream end of the rail frame 1034, and the upper surface height of the roller 1031 matches the upper surface height of the roller 1011 when the air cylinder is at the lower end. The stopper 1035 is adapted to lock the article G which is self-propelled in the inclination direction. Then, when there is an article take-out command, by operating the air cylinder,
The top end of the article G locked by the stopper 1035 is taken out so that the upper surface height of the roller 1031 matches the upper surface height of the roller 1033. At that time, the rail frame 10
Since the rear end of 32 is higher than the upper surface of the roller 1011, the succeeding article G is locked at the rear end of the rail frame 1032, and the article G stored on the gravity roller conveyor 1001 is transferred to the article supply conveyor 2002 by one. You can take out one by one.

A fluidized rack F (5 columns × 2 stages (= 10 units) shown in FIG. 1) consisting of 26 gravity roller conveyors 1a, 1b, ..., 1z arranged in a plurality of columns and a plurality of stages. An article G stored in an embodiment different from the fluidized shelf F composed of the gravity roller conveyor 1 is driven by the drive roller conveyor 72,
A method of arranging the load on the gravity roller conveyors 1001 arranged in a plurality of rows via the conveyor 1002 will be described. As shown in FIG. 5 articles Ga having a height of 300 mm and a height of 70 mm are stacked, and articles of the same type are stacked in the second stage, for example, a length of 300 mm and a height of 50 mm.
5 articles Gb of the
For example, when 5 articles Gc having a length of 300 mm and a height of 50 mm are stacked and the articles of the same type, for example, 5 articles Gd having a length of 300 mm and a height of 70 mm are stacked in the fourth stage, Five articles Ga from the gravity roller conveyor 1a, five articles Gb from the gravity roller conveyor 1b, five articles Gc from the gravity roller conveyor 1c, and five articles Gd from the gravity roller conveyor 1d, After passing through the drive roller conveyor 72 and the transfer conveyor 1002, the respective branch devices 1004
And the four articles Ga, Gb, Gc, G are respectively diverted on the five rows of gravity roller conveyors 1001.
d is loaded. The 20 articles G arranged in a line are stacked on the pallet P in an arrangement of 4 rows × 5 rows by the article stacking device 2000, as described later.

Further, as shown in FIG. 12, different types of articles G are placed in the second row, first column of the pallet P, for example, an article Ge having a length of 390 mm and a height of 50 mm from the bottom, and a length of 33.
Article Gf with a height of 0 mm and a height of 50 mm and a length of 380 mm
In the order of the article Gg having a height of 70 mm, the article Gh having a length of 390 mm and a height of 60 mm, the articles Gi, Gj, G having a length of 300 mm and a height of 50 mm in the second to fifth rows.
l, Gm, Gn, Gp, Gq, Gr, Gt, Gu, G
v, Gx, or an article G with a height of 300 mm and a height of 70 mm
k, Go, Gs, Gw in the second row, for example, from the bottom to the article G
In the order i, Gj, Gk, Gl, the article G
In the order of m, Gn, Go, Gp, from the bottom to the fourth row, the article G
In the order q, Gr, Gs, Gt, the article G from the bottom in the fifth column
In the case of stacking u, Gv, Gw, and Gx in this order, one article Ge from the gravity roller conveyor 1e, one article Gf from the gravity roller conveyor 1f, and one article Gg from the gravity roller conveyor 1g. However, one article Gh from the gravity roller conveyor 1h, one article Gi from the gravity roller conveyor 1i, one article Gj from the gravity roller conveyor 1j, one article Gk from the gravity roller conveyor 1k, One article Gl from the gravity roller conveyor 1l, one article Gm from the gravity roller conveyor 1m, one article Gn from the gravity roller conveyor 1n, one article Go from the gravity roller conveyor 1o, a gravity roller One article Gp from the conveyor 1p is a gravity rollerco One article Gq from bear 1q, one article Gr from gravity roller conveyor 1r, one article Gs from gravity roller conveyor 1s, one article Gt from gravity roller conveyor 1t, gravity roller conveyor 1u From the gravity roller conveyor 1v, one article Gv from the gravity roller conveyor 1w, one article Gw from the gravity roller conveyor 1x, and one article Gx from the gravity roller conveyor 1x. , Conveyor 100
After passing through 2, they are branched by each branching device 1004, and on the first gravity roller conveyor 1001 from the downstream side of the conveyor 1002, the articles Ge, Gf,
In the order of Gg and Gh, the articles Gi, Gj, Gk, and G are placed on the second gravity roller conveyor 1001 from the downstream side.
In the order of l, on the third gravity roller conveyor 1001 from the downstream side, the articles Gm, Gn, Go, and Gp are in the order of the fourth gravity roller conveyor 10 from the downstream side.
On the 01, in the order of the articles Gq, Gr, Gs, Gt, and on the fifth gravity roller conveyor 1001 from the downstream side, the articles Gu, Gv, Gw, Gx are ordered in the order, and 20 pieces are sorted. The articles G are stacked on the pallet P in an arrangement of 4 rows × 5 rows by the article stacking device 2000 as described later.

Further, the article stacking apparatus 2000 is provided with a pallet transport conveyor 20 for horizontally transporting the pallets P.
01, a plurality of rows (two rows) of article supply (drive) conveyors 2002 for supplying the articles G taken out from the gravity roller conveyor 1001 by the article take-out device 1003 onto the pallet P or the articles G previously supplied, the pallets Lifting device 2003 for lifting P, lifting device 200
Moving device 200 for moving 3 along the supply direction of the article G
4 and the like, by moving the pallet P in the horizontal direction and the vertical direction with respect to the article supply conveyor 2002, it is possible to stack the articles G aligned on the plurality of rows of gravity roller conveyors 1001 on the pallet P. There is. The article supply conveyor 2002 is a telescopic belt conveyor 2002a configured to be movable back and forth along the supply direction of the article G as shown by the one-dot chain line or two-dot chain line in FIG.
And a belt conveyor 2002b configured to have a constant length
It consists of and. In addition, the pallet transfer conveyor 20
Reference numeral 01 is a drive roller conveyor, and the lifting device 2003 is a table lifter. A drive roller 2032 is provided on the table 2031. Also, table 2
An article regulating plate 2033 is provided upright at the end of 031. Further, the moving device 2004 includes a rack 2041 and a pinion 2042, and is configured to move the elevating device 2003 in the supply direction of the article G along the guide 2043. Thus, the articles G loaded on the gravity roller conveyors 1001 arranged in a plurality of rows are taken out, and the articles are conveyed to the pallet P or the article supply conveyor 2002 located above the articles G stacked in advance. Preceding article G
The following articles G are aligned at intervals according to the height of the table, and the table 2031 is moved downward and forward (the article supply conveyor 200
2) while moving to the article supply conveyor 200
The articles G sorted on the item 2 are stacked on the pallet P or the articles G previously stacked.

That is, when a plurality of articles G are stacked on the pallet P as shown in FIGS. 11 to 13, the pallet P mounted on the table 2031 of the lifting device 2003.
However, as shown in FIG. 9, the table 2031 is retracted by the moving device 2004 while the table 2031 is retracted by the moving device 2004 while the article restricting plate 2033 is retractable belt conveyor 200 of the article supplying conveyor 2002.
2a and the position of the leading end of the belt conveyor 2002b (to the position where the articles G forming the columns of the first row start to be stacked).

When the pallet P is moved to the loading start position, the succeeding article G is taken out by the article taking-out device 1003 at an interval corresponding to the height of the preceding article G (for example, the article G having a height of 50 mm). The article G that is taken out after 1.0 second and the article G that is taken out after the article G having a height of 70 mm have a height of 8 seconds after 1.4 seconds.
The article G taken out after the 0 mm article G is 1.6
(Taken out in seconds) and continuously supplied by the article supply conveyor 2002. When a detector (not shown) attached to the leading end of the article supply conveyor 2002 detects the leading article Ga, the elevating device 2003 starts to descend, the moving device 2004 starts to move forward, and the pallet P moves toward the article Ga. By moving forward by the length (300 mm), the five supplied articles Ga are stacked on the pallet P (see FIG. 1).
See the solid line of 0). The elevating device 2003 continues to further descend, and when the top surface of the articles Ga stacked on the pallet P is lowered below the article supply conveyor 2002, the table 2031 is retracted and the article regulation plate 2033 is supplied. It is retracted to the position of the tip of the conveyor 2002. When the pallet P is retracted, at the same time, the following five articles G
Since b arrives at the tip of the article supply conveyor 2002 (see the chain double-dashed line in FIG. 10), the elevating device 2003 continues to descend, the moving device 2004 starts to move forward, and the subsequent parts supplied by the article supply conveyor 2002 are moved. The five articles Gb to be stacked are stacked so as to be stacked on the precedingly stacked articles Ga in the same manner as the initially stacked articles Ga, and a plurality of articles G as shown in FIG. Are stacked column by column (vertical direction). still,
The supply speed of the article G by the article supply conveyor 2002 is 3
It is set to 6 m / min, and the forward speed of the moving device 2004 is also set to 36 m / min.

When the final five articles Gd forming the first row of columns are stacked on the pallet P, the pallet P is lifted to a position directly below the article supply conveyor 2002 (of the article supply conveyor 2002). The position of the front end in the front-rear direction is at a position where the articles G forming the second row column are already started to be stacked.

When the pallet P is moved to the stacking start position of the articles G forming the second row column, the succeeding articles G are moved by the article removing device 1003 at intervals corresponding to the height of the preceding articles G. The product is taken out and continuously supplied by the article supply conveyor 2002. When a detector (not shown) attached to the tip of the article supply conveyor 2002 detects the leading article G, the elevating device 2003 starts descending, the moving device 2004 starts moving forward, and the pallet P is in the second row. ~ While moving forward by the length (300 mm) of the articles G to be stacked in the fifth row, the tip of the elastic belt conveyor 2002a is retracted 90 mm with respect to the tip of the belt conveyor 2002b, and the five articles G supplied are It is stacked on the pallet P. That is, the first of the second line
The length of the four articles G stacked in a row is 390 mm for the article Ge, 330 mm for the article Gf, and 380 for the article Gg.
mm, the article Gh is 390 mm, and the lengths of the 16 articles stacked in the second row to the fifth row are all 300 mm, so that the tip end of the telescopic belt conveyor 2002a is as shown by the alternate long and short dash line in FIG. , (390mm-300mm
=) It is designed to retreat by 90 mm (second row to fifth row).
Based on the maximum length (300 mm) of articles G to be stacked in a row, the length to be stacked in the first row is 390 mm
Article Ge, article Gf having a length of 330 mm, length 38
An article G having a maximum length of the article Gg having a length of 0 mm and an article Gh having a length of 390 mm, that is, an article G having a length of 390 mm.
Based on e and Gh, the end of the telescopic belt conveyor 2002a is 90 m away from the end of the belt conveyor 2002b.
It is possible to stack the four articles Ge, Gf, Gg, and Gh with the receding surfaces aligned by retreating m). The elevating device 2003 continues to descend further, and when the top surface of the articles G on the second row and the first stage stacked on the pallet P is lowered below the article supply conveyor 2002, the table 20 is moved.
31 is retracted by 300 mm, and the tip of the telescopic belt conveyor 2002a is advanced to the same position as the tip of the belt conveyor 2002b. Almost at the same time when the pallet P is retracted, the succeeding article G is transferred to the telescopic belt conveyor 200.
2a and the front end of the belt conveyor 2002b (the article Gf in the first row is 60 mm before), the elevating device 2003 continues to descend and the moving device 2004
Starts to move forward, and the succeeding articles G supplied by the telescopic belt conveyor 2002a and the belt conveyor 2002b are stacked so as to be stacked on the precedingly stacked articles G, as shown in FIGS. 12 and 13. As shown, a plurality of articles G are stacked column by column (in the vertical direction). That is, since the articles G previously loaded are moved forward, the articles G loaded on the article supply conveyor 2002 are loaded on the articles G previously loaded. Even non-slip articles G can be reliably stacked on the articles G previously stacked.

Similarly, the pallets P stacked up to the third row column are unloaded by the pallet transport conveyor 2001.

Although the article loading method of the present invention has been described above with reference to the example of the article arranging equipment suitable for carrying out the method, the article loading method of the present invention is not limited to these. For example, five rows of article supply conveyors 2002
May be provided, and each of the article supply conveyors 2002 may be configured by a retractable belt conveyor 2002a configured to be capable of advancing and retracting.

Further, a plurality of articles G are supplied in close contact with each other, and a plurality of articles G are supplied in close contact with the pallet P without leaving a gap between the supplied articles G in each row.
May be advanced by the length (for example, by the length corresponding to the length of the pallet P) so that a plurality of rows of the articles G are stacked substantially at the same time.

Further, while the moving device 2004 moves backward, or while the moving device 2004 moves forward, the lifting device 200 is moved.
The descent of 3 may be stopped.

Further, the width dimension of the article G may be different for each type (product type).

Considering the order of unloading the loaded articles G from the pallet P, it is preferable to load the articles G in the reverse order of the unloading order.

[0054]

Since the method of stacking articles according to the present invention is configured as described above, articles of arbitrary types such as different heights can be stacked at arbitrary positions. Also,
Even non-slip articles can be reliably stacked on previously stacked articles.

[Brief description of drawings]

FIG. 1 is a perspective view partially showing an example of an article arranging facility.

FIG. 2 is an elevational view of an essential part, which partially shows an example of the article assembling equipment.

3 is a side view showing an enlarged downstream end portion of the gravity roller conveyor shown in FIG. 1. FIG.

FIG. 4 is a plan view of FIG.

FIG. 5 is a plan view showing an example of an article load arranging unit.

FIG. 6 is a side view partially showing an example of the article arranging section.

FIG. 7 is a perspective view showing an example of an article stacking apparatus.

FIG. 8 is an explanatory diagram of an example of a method for arranging goods by means of an equipment for arranging goods.

9 is a side view for explaining the operation of the article stacking device shown in FIG. 7. FIG.

FIG. 10 is a side view for explaining the operation of the article stacking apparatus shown in FIG.

11 is a perspective view showing a state of articles stacked on a pallet by the article stacking apparatus shown in FIG.

FIG. 12 is a perspective view showing a state of articles stacked on a pallet by the article stacking apparatus shown in FIG.

FIG. 13 is an AA view of the state of the articles stacked on the pallet shown in FIG.

[Explanation of symbols]

 2002 (Goods supply) Conveyor G Goods

Claims (2)

[Claims] 1. Articles that are arranged next to a conveyor located above the precedingly stacked articles are aligned, and the articles that are previously stacked are arranged on the conveyor while moving forward. A method of stacking articles, wherein articles are stacked on the articles stacked in advance. 2. The method of stacking articles according to claim 1, wherein the subsequent articles are loaded at intervals according to the height of the preceding article.