JPS63225030A - Pallet loading device - Google Patents

Abstract

PURPOSE:To surely hold an article in its step loaded attitude while to surely prevent the step loaded article from tumbling, by providing a stopper structure which stops one side surface of the step loaded article three-dimensionally moving. CONSTITUTION:A loading device advances a stopper structure 41 to a step loaded article W inserting a fork 42 in the bottom part of the stopper structure 41 into the lowermost surface of the step loaded article W, here the device, which engages an engaging pawl 52 of each step with a side surface opening part 53 of each corresponding article W, respectively fixes it to a stopping surface 51 of the stopper structure 41. The device, three-dimensionally moving this stopper structure 41, moves the article W on the fork 42 onto a pallet. And the device, which retracts only the fork 42 placing the stopper structure 41 to be left as held in the fixed position, extracts the fork from the bottom surface of the article W. Also the engaging pawl 52 in each step is removed from the side surface opening part 53 of each corresponding article W.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a pallet loading device for stacking stacked articles onto a pallet.

(Prior Art) Conventional pallet loading devices include a flow-type robot palletizer that stacks articles one by one or one row at a time from the bottom, and a palletizer that stacks pre-stacked articles together on a pallet. There is also a type that is transferred to .

Examples of this stacking type pallet loading device include Japanese Patent Publication No. 47-16938 (Conventional Example 1), Japanese Utility Model Publication No. 55-28662 (Conventional Example 2), Japanese Utility Model Publication No. 55-28662 (Conventional Example 2),
Publication No. 28663 (Conventional Example 3), Utility Model Publication No. 55-3891
There are those shown in Publication No. 6 (Conventional Example 4) and Japanese Utility Model Application Publication No. 52-122479 (Conventional Example 5).

The pallet loading device described in Conventional Example 1 uses a pushing body to push out the articles on the carry-in conveyor onto a base plate one multi-stage row at a time, and when loading of one pallet is completed, the pushing body pushes the pallet and the base plate. The article is pressed simultaneously with the article on the plate, the base plate is pulled out relatively, and the article is transferred onto the pallet.

The article fall prevention machines shown in Conventional Example 2 and Conventional Example 3 similarly transfer articles stacked in multiple stages onto pallets one row at a time. The machine of Conventional Example 3 prevents the articles from falling by pressing the upper sides of the stacked articles. be.

The device shown in the prior art example 4 is one in which hexagonal milk container containers are stacked, and the device shown in the prior art example 5 is roughly as follows:
Peripheral facilities related to the conventional examples 2 to 4 are shown.

(Problems to be Solved by the Invention) The one-bottle palletizer stacks articles one by one from the bottom, one row at a time, so the condition of the loading surface (or top surface of the pallet) of the previously transferred articles is poor; If there are waves or unevenness, the position of stacking articles on each tier will be unstable, and it will not be possible to actually stack items according to the data values.

In the case of Conventional Example 1, since the pushing body simply pushes the articles onto the base plate and further onto the pallet, there is a risk that the stacked articles may fall toward the non-pressing surface. In addition, in the case of Conventional Examples 2 and 3, the stacked articles in the first row are only prevented from falling, and the pallet is moved forward and backward to avoid the risk of hitting the articles when the fall prevention piece rotates. However, no consideration has been given to preventing objects from falling when the pallet moves forward or backward.

An object of the present invention is to securely maintain the stacked appearance and prevent the stacked articles from falling over by locking each article one by one when stacked articles are stacked on a pallet. The purpose is to prevent this and enable orderly pallet stacking.

[Structure of the invention]

(Means for Solving the Problems) The present invention provides a pallet loading device for transferring stacked articles W onto a pallet P, in which one side of the stacked articles W is locked and three-dimensional a locking body 41 that is moved in a specific manner;
A fork 42 is provided at the lower part of the locking body 41 to support the article, and a fork 42 is provided to be horizontally movable between a forward position where the article W is horizontally supported and a retreat position where the article is retreated from the bottom side of the article. It is constituted by a plurality of stages of engagement claws 52 which are movably provided on the stacked article locking surface 51 of the stacked articles 41 and engage with the side openings 53 of each stacked article.

(Function) In the present invention, the locking body 41 moves forward with respect to the stacked articles W, the lower fork 42 is inserted into the lowermost surface of the stacked articles W, and at this time, the engaging claws 52 of each tier are It engages with the side opening 53 of each corresponding article W, and each article W is fixed to the locking surface 51 of the locking body 41, respectively. This locking body 41 is 3
Move dimensionally and transfer the article W on the fork 42 onto the pallet P! 711jru. Then, while the locking body 41 is kept in place, only the fork 42 retreats and is pulled out from the lower surface of the article W. The engaging claws 52 of each stage also correspond to each article W.
is removed from the side opening 53 of.

(Examples) Hereinafter, the present invention will be described in detail with reference to examples shown in the drawings.

As shown in Figure 4, the pallet stock device! 11
, conveyor 12 , and pallet conveyance direction changing device 113
, conveyor 14, and pallet conveyance direction change Li! J1
5 and the conveyor 16 constitute a pallet P supply line. The conveyance direction changing device 13.about.15 receives a pallet in an upper bound state and conveys the pallet to a conveyor in a perpendicular direction by descending. One end of the conveyor 16 is at a pallet standby position V117 for loading goods.
The other end is a pallet take-out position 18 where a loading pallet is taken out by a forklift or the like.

Additionally, there is a stacker 21 for stacking articles, and a conveyor 22.
and the stacked article station 23 constituted by a roller conveyor constitute a stacked article supply line.

Further, a pallet loading device 31 is provided for transferring articles (cases containing a large number of bottles) W from the stacked article station 23 onto the pallet P at the pallet standby position 17. This device 31 is mounted on a base 32 with Z
An axis guide 33 is provided upright, a Z-axis slider 34 is provided on this Z-axis guide 33 so as to be movable up and down, a Y-axis guide 35 is provided integrally with this Z-axis slider 34, and a Y-axis A slider 36 is provided movably, and an X-axis guide 31 is provided integrally with this Y-axis slider 36.
This X-axis guide 37 has an
A shaft slider 38 is provided movably.

As shown in FIGS. 1 and 2, a locking body 41 is provided below the X-axis slider 38. This locking body 41 locks one side of the stacked articles W and is moved three-dimensionally.

In addition, 1. Since the locking body 41 hangs down for an i length below the X-axis guide 37 which is moved up and down along the Z-axis guide 33, the height of the hand is high and the center of gravity is at the bottom.

In order to prevent rolling, linear bearings are provided on the rails of the Y-axis guide 35 and the like.

A fork 42 for supporting articles is provided below the locking body 41 so as to be horizontally movable. As shown in FIG. 1, the fork 42 is moved back and forth between a forward position where it horizontally supports the article W and a retracted position where it retreats from below the article W. In the drive mechanism of this fork 42, a pinion 44 rotated by a rotary cylinder 43 is engaged with a rack 45, and this rack 45 is provided integrally with the fork 42.
And the fork 42 is held so as to be moved horizontally.

Further, a plurality of engagement claws 52 are movably provided on the stacked article locking surface 51 of the locking body 41, and the engagement claws 52 are attached to each stacked article as shown in FIG. It engages with the side opening (handle window) 53 of W.

As shown in FIG. 3, each of the engaging claws 52 is integrally provided on a common vertically movable member 55 via a mounting member 54 at the pitch of the side opening 53 of each article W. There is. The vertically movable member 55 is a vertically elongated member, and is movably held on both sides by pinching rollers 56. A cylinder connecting portion 5 is attached to a part of this vertically moving member 55.
7 is provided. As shown in FIGS. 1 and 2, a piston rod 59 of an air cylinder 58 attached to the locking body 41 is pivoted to the connecting portion 57.

The Z-axis slider 34, Y-axis slider 36, and X-axis slider 38 are each moved by a feeding mechanism using a ball screw, an endless chain, or a pinion rack rotated by a motor.

Next, the operation of this embodiment will be explained.

In FIG. 4, pallet P is pallet stock device 11
Among the many pallets stacked on top of each other, only the bottom one is taken out onto the conveyor 12, transferred to the conveyor 14 by the conveyance direction changing device 13, and then roughly transferred to the conveyor 16 by the conveyance direction changing device 15. and is conveyed by this conveyor 16 to a standby position 17. On the other hand, the articles (bin storage cases) W are stacked in predetermined stages by the stacker 21 and conveyed to the station 23 by the conveyor 22.

When the article W arrives at the station 23, the X-axis slider 38 of the loading device is driven, the locking body 41 is advanced, and its fork 42 is moved to the a-ra [
5i. At this time, at the same time, the engaging claws 52 of each stage
is inserted into the side opening (handle window) 53 of each article W. In FIG. 1, the article W is shown separated from the locking surface 51 of the locking body 41 in order to represent the shape of the engaging pawl 52, but in reality, the article W on the fork 42 is separated from the locking surface 51 of the locking body 41. It is in close contact with the locking surface 51.

Therefore, when the vertically movable member 55 is lowered by the air cylinder 58, each engaging claw 52 inserted into the opening 53 of each article W engages the bottle 61 stored in the bottle case as an article and the opening. It is pushed between the lower edge 62 of the portion 53 and engages with this lower side [62.

In this way, the articles W at each stage are held by the engaging claws 52, and the fork 42 lifts the articles W, and the three-dimensional movement of the X, Y, and Z moves the pallet P at the standby position 17. Move up and handle the fork 42. At this time, the article W is detected by the article locking surface 51 of the locking body 41, and the engaging claw 52 is
Since the article W is pressed downward with a back pressure of 8, the article W lands softly on the pallet from one end against a drop equal to the thickness of the fork 42.

Repeat the above operations to stack on pallets.

This device can also handle rounding. For example, as shown in Fig. 4, each pallet is stacked nine times, so if there are 45 articles, they are stacked nine times in five stages (5X9=45>), but if there is a request for 40 articles per pallet, In this case, stacking is carried out 9 times by stacking 5 tiers 4 times and stacking 4 tiers 5 times.When such rounding is performed, the conventional tipping prevention method of pressing down on the top of the stacked articles from the side is used. Although it is useless as a means, in this device, the individual articles W can be reliably locked by the engaging claws 52 regardless of the rounding process.

When the entire surface of the pallet P is completely loaded in this manner, the pallet is transported to the pallet take-out position 18, and the pallet is taken out from this position 18 by a forklift or the like.

[Effects of the Invention] According to the present invention, in a pallet loading device that transfers stacked articles onto a pallet, the stacked articles are moved three-dimensionally by locking the sides of the stacked articles. a locking body, a fork that supports the article and is provided at the lower part of the locking body so as to be horizontally movable between a forward position where the article is horizontally supported and a retreat position where the article is retreated from the bottom side of the article; Because it has a plurality of stages of engagement claws that are movably provided on the stacked article locking surface of the stopper and engage with the side openings of each stacked article,
While supporting the back side of each article by the locking body,
By locking the articles on each tier one by one with each of the engaging claws, it is possible to reliably maintain the stacked state of each article, and also to reliably prevent the stacked articles from falling over, resulting in an orderly pallet. Can be stacked. Furthermore, it is possible to handle rounding of different numbers of article stages on one pallet.

[Brief explanation of the drawing]

Fig. 1 is a side view of the pallet loading device of the present invention, Fig. 2 is its front view, Fig. 3 is an enlarged view of its main parts, and Fig. 4 is a plan view of the pallet loading line in which this device is incorporated. It is a diagram. W... Goods, P... Pallet, 41... Locking body, 42...
- Fork, 51... Stacked article locking surface, 52... Engagement claw, 53... Side opening.

Claims (1)

[Claims] (1) In a pallet loading device that transfers stacked articles onto a pallet, a locking body that locks one side of the stacked articles and moves three-dimensionally, and this locking body a fork that is horizontally movable and supports the article between a forward position where the article is horizontally supported and a retracted position where the article is retreated from the bottom of the article; A pallet loading device characterized by comprising a plurality of stages of engaging claws that are movably provided and that engage with side openings of each stacked article.