EP1970316B1 - Injection moulded plastic pallet - Google Patents

Abstract

The injection molded plastic pallet (1) has a rectangular loading area (2). A reinforcement fillet is inserted in a diagonally running recess (5) in the rear side of the loading area. A pedestal (3) is directly formed in the injection molding, and two pedestals are diagonally opposite to each other in each case. The two pedestals are arranged at the end points of the recess for the reinforcement fillet. A retainer is provided for the both ends of the reinforcement fillet. The reinforcement fillet is a metal section.

Description

The invention relates to an injection-molded plastic pallet with a rectangular cargo area and to be arranged at the bottom of the cargo area at each of its corners feet.

Such 'plastic pallets are produced in large quantities, must be inexpensive but still have sufficient stability.

In such pure plastic pallets, the deflection at higher temperatures during a shelf storage is particularly high. For this purpose, possibilities must be created so that this deflection can be kept as low as possible.

In a normal use on a forklift or floor storage, however, the "naked" version of the plastic pallet is sufficient.

The invention is therefore based on the object to design a pallet of the type mentioned above, that it is inexpensive to manufacture, sufficient for use on forklifts or floor storage their stability, but options are provided that the stability the plastic pallet, in particular the plastic bearing surface can be reinforced.

The invention solves this problem according to the characterizing part of claim 1, characterized in that in a diagonally extending recess in the underside of the loading area, a reinforcing bar can be inserted, wherein at least one of the feet is molded directly during injection molding and in each case two diagonally opposite feet, the are to be arranged at the end points of the recess for the reinforcing strip, receptacles are provided for the two ends of the reinforcing strip.

Such a plastic pallet is thus produced in large part in one piece, the loading area can be made equal to at least one base as an integral unit during the injection process.

In normal operation on forklifts or floor storage, the plastic pallet produced in this way can be used with additionally screwed on feet.

The other three feet are screwed as I said, for example, wherein one of these feet can be hollow and serves to accommodate a transponder.

In order to minimize the temperature-induced deflections in the rack storage, the pallet can be provided with a reinforcement. For this purpose, the two feet bolted to the end points of the Anssparung need only be unscrewed, the reinforcing strip inserted into the corresponding recess and the feet are screwed back, whereby at the same time the two ends of the reinforcing strip are fixed.

For this purpose, according to claim 2 in the screw-on feet receiving channels and ribs in which the ends of the reinforcing strip are positively and non-positively fixed, while the other two feet are molded directly.

A second alternative is given in claim 3. Here are the injection molding of the plastic pallet three feet directly molded with, while only the fourth base is screwed. In this fourth screw-on base, in turn, a receiving channel or ribs is / are formed in which one end of the reinforcing strip is received and fixed. In this diagonally opposite integrated stand, an opening aligned with the reinforcing strip opening is provided, in which the reinforcing strip is inserted before the fourth base is screwed on.

In a third alternative, it is provided according to claim 5, that all four feet are molded directly, wherein in one of the feet a flush with the reinforcing strip recess, but continuous opening is provided, while in this base opposite stand a receiving pocket for the corresponding end of the continuous opening in the reinforcing strip recess inserted reinforcing strip is formed and in the continuous opening a fixing means for the reinforcing strip is provided.

If the pallet is to be reinforced, in this alternative, the reinforcing strip is pushed laterally through the continuous opening in the diagonal recess until the first inserted end of the reinforcing strip extends into the receiving pocket of the opposite base.

In the continuous opening, a fixing means is provided, with which the reinforcing strip end located here can be fixed.

A further alternative is given by the claim 6, wherein all four feet are also molded directly on the end points of the reinforcing strip recess provided feet have the end points of the recess forming formations within which the reinforcing strip is fixable by means of fixing elements.

In this embodiment, the reinforcing strip is inserted from above into the receptacle formed by the recess and the formations. The reinforcing strip is then fixed in the region of these recesses by means of tabs.

For additional stiffening of the injection-molded plastic pallet is provided according to claim 7, that are provided for each two adjacent stands feet shots for a stand connecting feet together.

The skid together with the feet forms the footprint of the pallet. This makes the pallet suitable for transport on roller conveyors. However, it can also be provided that the runner projects beyond the plane that runs through the two footprints of the feet. This results in an increase in the distance surface from the bottom to the bottom of the cargo area of the pallet, for example from 120 mm to 150 mm.

However, this increase in distance can also take place according to claim 8, characterized in that plate-shaped spacers are arranged on the base surfaces of the feet.

Another measure to stabilize the stability of the plastic pallets according to the invention is given in accordance with claim 9, characterized in that the feet are conical and can be applied to increase the base height and stabilize the conical feet cuboidal essays.

This refers in particular to pallets that can be nested in the empty transport, wherein the conical feet are inserted into corresponding conical recesses in the vertices of the loading area after the cuboidal attachments have been removed.

For further stiffening of the plastic pallet according to the invention, it is provided according to claim 10 that a thin plastic plate is welded onto the loading surface side of the pallet.

The plastic pallets in question have a honeycomb configuration for saving of material and for reasons of weight saving. In conventional plastic pallets, a plastic layer is sprayed onto this honeycomb surface, but this is up to 3 mm thick.

Due to the configuration according to claim 10, this layer can be much thinner (about 1 mm).

According to claim 11 it is provided that the reinforcing strip is a metal profile. This may be a rectangular hollow profile or a U-profile.

It may be steel strips or steel plastic strips, but other correspondingly rigid materials may be provided.

The invention is illustrated and explained below with reference to drawings.

Fig. 1a - c

eine erste Alternative einer verstärkungsfähigen Kunststoffpalette

Fig. 2a - c

eine zweite Alternative einer verstärkungsfähigen Kunststoffpalette

Fig. 3a - c

eine dritte Alternative einer verstärkungsfähigen Kunststoffpalette

Fig. 4a - c

eine vierte Alternative einer verstärkungsfähigen Kunststoffpalette

Fig. 5

eine Palette gemäß den Figuren 1 bis 4 mit aufgeschweißter Platte

Fig. 6a und b

Palette mit Kufen

Fig. 7a und b

Palettenstandfüße mit und ohne Abstandselement

Fig. 8a und b

Kunststoffpalette mit konischem Fuß und kubischem Aufsatz

Show it:

Fig. 1a - c

a first alternative of a reinforceable plastic pallet

Fig. 2a - c

a second alternative of a reinforceable plastic pallet

Fig. 3a - c

a third alternative of a reinforceable plastic pallet

Fig. 4a - c

a fourth alternative of a reinforceable plastic pallet

Fig. 5

a pallet according to the FIGS. 1 to 4 with welded plate

Fig. 6a and b

Pallet with runners

Fig. 7a and b

Pallet feet with and without spacer

Fig. 8a and b

Plastic pallet with conical base and cubic attachment

In the FIGS. 1 to 8 is shown in each case, partially in a broken view, an injection-molded plastic pallet and generally designated by the reference numeral 1. The honeycomb embossed cargo area 2 is rectangular and equipped on its underside with feet 3, 4, which are injection molded partly directly during injection molding, partially screwed or welded later.

Diagonally formed in the underside of the loading area 2 is a linear recess 5, in which a steel reinforcing strip 6 can be inserted or inserted.

In the FIGS. 1a to c a first alternative of an injection-molded plastic pallet 1 is shown in which two diagonally opposite feet 3 are molded directly onto the loading surface 2 of the pallet.

After the reinforcing strip 6 has been inserted into the recess 5, 2 feet 4 are screwed, for example, at the free corners of the underside of the loading area.

The feet 4 have on their underside recesses or ribs, which serve to fix the reinforcing strip 6.

In the FIGS. 2a-c a second alternative is shown. In this case, three feet are sprayed onto the loading surface 2 during injection molding of the pallet. The recess 5 terminates in a receiving pocket 7 in the base 3, which forms one end of the recess 5.

Like from the FIG. 2b shows, the reinforcing strip 6 is inserted into the recess 5 and inserted into the receiving pocket 7. After that, how will off Figure 2c shows, the fourth base 4 screwed onto the underside of the bed 2, that analogous to Figure 1c the reinforcing strip 6 is securely fixed.

In the FIGS. 3a to c a third alternative is shown. Here are all four feet 3 molded directly.

The feet 3, which form the end points of the recess 5, are configured as follows. One of these feet 3 has a continuous, aligned with the course of the recess 5 opening 8, through which the reinforcing strip 6 is inserted into the recess 5, until the end of the reinforcing strip 6 extends into the receiving pocket 7 in the opposite base. A fixation device not shown in the opening 8 then fixes the inserted reinforcing strip. 6

Another embodiment of the invention is in the FIGS. 4a to c shown. Again, all four feet 3 are molded directly.

The feet forming the end points of the recess 5 here have recesses 9, so that the reinforcing strip 6 can be inserted from above into the recess 5 and thus also into the recesses 9. This is in FIG. 4b shown. How out Figure 4c shows, then the reinforcing strip 6 is fixed by means of tabs 10 in the recess 5.

In the FIG. 5 is one of the examples from the FIGS. 1 to 4 executed pallet shown, wherein on the upper side of the loading surface 2, a thin plate is welded. This plate can be made substantially thinner and lighter than a directly applied during injection pad.

In the Figures 6a and 6b is a further reinforcement measure of the plastic pallet 1 shown.

Here are how out FIG. 6a emerges, aufmontiert on two adjacent feet 11 shots in the -wie from FIG. 6b emerges skids 12 can be inserted.

To increase the distance between the underside of the loading area 2 and the floor space can -as from the FIGS. 7a and 7b apparent on each stand a spacer plate 13 screwed or welded.

Finally, out of the FIGS. 8a and b It can be seen that the feet 3 and 4, respectively, have a conical base 14 onto which a rectangular cover 15 can be slipped.

Empty pallets 1 can, after the cuboid part has been removed, be nested in one another so that the conical feet dive into correspondingly conical recesses on the upper side of the loading surface 2.

Claims (11)

1. An injection molded plastic pallet comprising a rectangular loading area and pedestals to be arranged on the lower side of the loading area at each of the loading area's corners, characterized in that in a diagonally extending recess (5) in the lower side of the loading area (2), a reinforcement rail (6) can be inserted, wherein at least one of the pedestals (3) is directly molded during injection molding, and receptacles (7, 8, 9) for the two ends of the reinforcement rail (6) are provided in each case in two pedestals (4) which are to be arranged at the end points of the recess (5) and arranged diagonally opposite each other.
2. The injection molded plastic pallet according to claim 1, characterized in that two injection molded pedestals (3) are provided and that at the end points of the recess (5) for the reinforcement rail (6) in addition in each case one pedestal (4) can be attached which has fixing means for the reinforcement rail ends.
3. The injection molded plastic pallet according to claim 1, characterized in that three pedestal (3) are directly injection molded and the fourth pedestal (4) can be attached at one of the end points of the recess (5) for the reinforcement rail (6) and has a receiving pocket (7) for one of the reinforcement rail ends, while into the already injection molded pedestal (3) arranged diagonally opposite said pedestal (4), a fixing means for holding the other reinforcement rail end is molded.
4. The injection molded plastic pallet according to any one of the claims 1 to 3, characterized in that one of the attachable pedestals (4) is formed as hollow body and serves as receptacle for a transponder.
5. The injection molded plastic pallet according to claim 1, characterized in that all four pedestals (3) are directly injection molded, wherein in one of the pedestals, a continuous opening (8) aligned with the reinforcement rail recess (5) is provided, while into the pedestal (3) arranged opposite said pedestal (3), a receiving pocket (7) is molded for the respective end of the reinforcement rail (6) inserted through the continuous opening (8) into the reinforcement rail recess (5) and a fixing means for the reinforcement rail (6) is provided in the continuous opening (8).
6. The injection molded plastic pallet according to claim 1, characterized in that all four pedestals (3) are directly injection molded, wherein the pedestals provided at the end points of the reinforcement rail recesses (5) have cut-outs (9) forming the end points of the recess (5), within which cut-outs, the reinforcement rail (5) can be fixed by means of fixing elements (10).
7. The injection molded plastic pallet according to any one of the claims 1 to 6, characterized in that in each case in two adjacent pedestals (3,4) receptacles (11) are provided for a bottom runner connecting the pedestals (3, 4) to each other.
8. The injection molded plastic pallet according to any one of the claims 1 to 7, characterized in that on the bottom surfaces of the pedestals (3, 4), plate-shaped spacers (13) are arranged.
9. The injection molded plastic pallet according to any one of the claims 1 to 8, characterized in that the pedestals (3, 4) are conically formed and cuboidal attachments (15) can be placed onto the conical pedestals (14).
10. The injection molded plastic pallet according to any one of the claims 1 to 9, characterized in that a thin plastic plate (16) is welded onto the loading area side of the pallet (1).
11. The injection molded plastic pallet according to any one of the claims 1 to 10, characterized in that the reinforcement rail (6) is a metal section.

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