JPS582139B2 - How to load a pallet loader - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pallet loader stacking method that allows stacking to be carried out at high speed without producing the sound of falling articles.

Generally, in a pallet loader, the required number of articles to be palletized, which are continuously or intermittently supplied, are lined up for one stage and then transferred onto a strip plate positioned above the pallet that moves up and down. By pulling out the strip plate with the articles on the plate stopped, the articles fall onto the pallet or onto the articles on the pallet, and this process is repeated to achieve desired stacking.

However, in order to improve production capacity, it is desirable to pull out and return the strip plates instantly, but there are limits to speed-up due to the shape retention of the aligned articles, noise generation, etc.

In particular, the sound caused by the sound is significant and is a cause of pollution.

The inventor of the present invention has focused on this point and has developed a product that improves the loading capacity without destroying the shape of the articles on the strip plates that are aligned and without generating any noise. A plurality of articles are brought in in a lined manner and are stopped and supported in a fixed position on a strip plate that is large enough to prevent the articles from falling from both sides in the article supply direction and is slidable; Next, the strip plate is pulled out while holding the article, and at the same time the lifter, which is waiting at a position one level below the article, is temporarily raised to just below the strip plate, the article grip is released, and the article is lifted from above the plate. After the lifter is delivered to the top, the lifter is lowered one more step to stop and wait at the standby position, and this is repeated in sequence to stack the items on the pallet placed on the lifter at high speed without causing any noise of falling items. It is characterized by doing the following.

The present invention will be explained below based on examples.

In the figure, reference numeral 1 denotes a supply conveyor that carries articles to be stacked on a pallet in one or more rows in parallel and sequentially to a pallet loader.An inlet conveyor 2 is connected to this supply conveyor. A predetermined number of incoming articles to be piled up in one layer is arranged and temporarily stocked.

To align and stock the articles on this inlet conveyor 2, a brake roller 3 is interposed between the carry-in conveyor 1 and the inlet conveyor 2, and the first inlet conveyor 2
A stopper 4 that moves up and down is provided between the inlet conveyor 2a and the second inlet conveyor 2b, and the first article is brought into contact with the stopper 4 that protrudes from the first inlet conveyor 2a, so that a predetermined number of articles are placed on the first inlet conveyor 2a. When the goods are supplied to the inlet conveyor side, the brake roller acts to prevent the goods from being carried any further from the carry-in conveyor 1 to the inlet conveyor side.

The articles counted on this first inlet conveyor for one stage are transferred onto the next second inlet conveyor 2b by lowering the stopper 4.

A strip plate 5 is provided adjacent to the tip of the inlet conveyor 2b, and a rotary stripper 6 is provided between the strip plate and the inlet conveyor 2b.

The strip plates 5 face each other and are supported by the main body frame F of the pallet loader so as to slide horizontally, and each of the strip plates 5, 5
The strip plate is provided with a cylinder 7 and a link 8, and the strip plate is slid by the operation of the cylinder, but it is also possible to use other methods instead of the cylinder and link.

The length of one of the two opposing strip plates 5 (in the plate sliding direction) is preferably 1/2 or less of the width W of the articles that are aligned and carried onto the plate, and desirably the length of the two opposing strip plates 5 As long as all the articles aligned by the strip plates 5, 5 do not deform or fall and can be supported reliably, it is better to make them as small as possible.

Moreover, this plate may be one piece.

Further, guides 9, 9 are provided on the main body frame F for regulating the positions of the two opposing sides of the articles carried in above the strip plate and for accurately shaping (aligning) them.

This guide 9 is either fixed to the frame F or movable by a cylinder 9a, etc., and the article on the strip plate is temporarily strongly clamped from two opposing sides, and the strip plate is placed under the aligned article. To hold the article so that it does not fall even when moving backward.

In addition, if this guide 9 is used only for arranging articles and is of a fixed type, a clamping tool 12 is attached to the cylinder 1 on the outside of this guide 9.
22 or the like, and the protrusion 12b protruding from the inner surface of the clamping tool 12 is made to protrude from the hole (not shown) drilled in the guide 9, and the protrusion 12b of the clamping tool protrudes from the hole (not shown). It is used to hold objects.

One of the clamping tools 12 may be fixed and the other movable, or both may be movable, or the clamping tool may be used only on one side, and the other may be replaced by a fixed guide 9.

In any of these methods, it is sufficient to temporarily hold the article and prevent it from falling.

Further, a back pusher 10 is provided on the main body frame F so as to shape the article in the front-rear direction with respect to the carrying-in direction so as to come into contact with the front surface of the leading article being carried in.

The push plate 10a of this back pusher 10 is designed to simultaneously push the front surfaces of all the articles lined up.

Further, a rotary stopper 6 is provided on the main body frame F on the article loading side facing the back push shear 10, and the rotary stopper 6 is equipped with a rotary stopper 6 on the main body frame F to stop the articles pushed out from the inlet conveyor 2b onto the strip plate via the extrusion device 11. The rotary stripper 6 is rotated from a horizontal standby position and pushes the end of the rearmost row of the lined up articles so that the leading group of the articles hits the back pusher.

At this time, the back push shear and the rotary stopper work together to ensure that the article is shaped in the direction in which it is carried in.

The articles pushed out from the second inlet conveyor 2b in this manner are accurately shaped in both the front, rear, left, and right directions.

In this state, the article is then held by the guide 9 or the holding tool 12, and then the strip plate is pulled out by the cylinder 7 or other drive device, and the lifter 8, which is waiting at a position below the strip plate, is raised. The top surface of the pallet on the lifter or the topmost article stacked on the pallet comes into contact with the lower surface of the article held on the strip plate, or the article is slightly lifted up. This eliminates the possibility of the stowed articles falling, thereby ensuring that the strip plate is pulled out and stowed at the same time, and at the same time, the noise caused by the falling articles is eliminated and the stowage can be carried out at high speed.

When the stacking is completed, the lifter is lowered by one stage of article stacking to wait at a standby position, and the strip plate is returned to its original state to supply and support the plurality of shaped articles onto the plate again. It is.

This operation is repeated in sequence to complete the desired loading.

It should be noted that various methods can be used for the extrusion device that simultaneously extrudes a plurality of articles onto the strip plate from the inlet conveyor 2b. An extrusion bar 11 is placed between two endless chains 11a, 11a.
b is integrally provided, and the extrusion bar 11b pushes the end of the last row of articles by driving the chain 11a.

According to the present invention, the strip is large enough to prevent articles carried in a plurality of aligned rows from falling from both ends in the article blood supply direction, and is slidable. The product is stopped and supported at a fixed position on the plate, and then the strip plate is pulled out while holding the product.At the same time, the lifter, which is waiting at a position one level below the product, is temporarily raised to just below the strip plate. After releasing the article supporter and transferring the article from the plate onto the lifter, the lifter is lowered one more step to stop and wait at the standby position, and this is repeated in sequence to stack the articles on the pallet placed on the lifter. This prevents the stacked items from falling, so there is no noise from falling items, and there is an advantage that the stacking can be done at high speed.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view, FIG. 2 is a side view, and FIG. 3 is a front view. 1... Supply conveyor, 2, 2b... Inlet conveyor, 3... Brake roller, 4... Stopper, 5... Strip plate, 6... Rotary stopper, 7...
...Cylinder, 8...Lifter, 9...Guide, 10...
Back pusher, 11... extrusion device, 11a... chain, 11b... extrusion bar, 12... clamping tool.

Claims (1)

[Claims] 1 A plurality of articles are brought in in a line in each row and stopped at a fixed position on a strip plate that is large enough to prevent the articles from falling from both sides in the article supply direction and is slidable. Then, while holding the article, the strip plate is pulled out, and at the same time, the lifter, which is waiting at a position one level below the article, is temporarily raised to just below the strip plate, and the article is released from above the plate. After the articles are transferred onto the lifter, the lifter is lowered one step further to the standby position, and then stopped and waited. This is repeated in sequence to place the articles on the pallet placed on the lifter without causing any noise of the articles falling. A stacking method in a pallet loader characterized by stacking at high speed.