DE8433960U1 - Pallet container made of plastic - Google Patents

Description

To the

German Patent Office

Zweibrückenstrasse 12

8 (300 Munich

Utility model description:

for Mr. Helmhold Schneider, Petersbächweg 1, 5230 Altenkirchen

Description:

Plastic pallet containers

Description:

The invention relates to a pallet container, consisting of an inner container made of plastic.) Which is surrounded by a lattice frame and fastened on a pallet »

There are known pallet containers in which the inner container is made of a closed sheet metal jacket with a welded-on bottom and cover is surrounded, the sheet metal jacket being fastened to a wooden pallet by means of fastening claws.

Furthermore, pallet containers are known in which the stability is provided by a wire mesh surrounding the inner container will. This spot-welded wire mesh is welded to the wire mesh from a top and bottom running Angle profile held. This wire mesh is attached by screwing the lower angle profile onto the wooden pallet. As these pallet containers are mainly used as one-way containers are used and thus substitute for packaging barrels, is one of the main goals to produce these containers economically and to make the construction so that they can be handled safely and easily.

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The experiences that have been made with such 'containers so far have a number of disadvantages. In the case of the pallet containers surrounded by a sheet metal jacket, for example, filling level control is only inadequately possible, even though there are viewing openings in the sheet metal jacket. Another Deficiency is that the condition of the inner container cannot be seen from the outside. Any damage can only be difficult and often only localize with a time delay, so that the damage caused by the filling material is difficult to keep within limits in time can be.

All such transport containers are equipped with a lower outlet and an upper filling opening. Does he forget If the user unscrews the upper filling opening when emptying, the inner container is compressed by the external air pressure and thus not only unusable, but it there is also the risk that the inner container will be damaged by the outer sheet metal jacket due to the formation of folds on the inner container can be.

Another disadvantage of this inner container, which is surrounded by a sheet metal jacket, is the insufficient stacking strength, Aus For reasons of cost, very thin sheet metal is used, so that the stacking strength is considerably reduced. Though can - perfect condition, e.g. B. no bulging of the sheet metal wall required - two to three pallet containers are stacked on top of each other, but usually very rough During loading operations, it is not uncommon for the containers to be stacked to be deposited abruptly, causing the bottom The container wall is dented and the entire stack is at risk from tipping over.

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Pallet containers P, which are made with a wire mesh like the one described - scaffolding are stabilized, they are disadvantageous because of this that the angle profile welded to the upper and lower circumferential lattice edge only insufficient bending and twisting ^ Has stability and thus to the overall stability of the lattice frame contributes insufficiently.

It is true that a spot-welded wire mesh is capable of producing the to partially absorb the deformation forces transmitted to the inner container, but this is largely due to the wire thickness and the tightness dependent. However, this increases the material costs considerably. The bars always widen as far to the outside as on the one hand the corner stability of the lattice frame allows and on the other hand the stability of the upper and lower angle profile.

However, all of these container types have another common flaw _t because they are mounted on a flat pallet, they cannot be completely emptied. As a rule, a few percent of the product remains unused in the containers. A not inconsiderable cost factor.

The invention has now set itself the task of designing a pallet container so that it does not have such disadvantages & uf shows.

According to the invention, this is achieved in that a spot-welded wire mesh closely adjoins the plastic inner container and has an upper and lower circumferential tubular frame, which is connected to the wire mesh in a force-fitting manner. These tubular frames are designed so that the deformation forces arising from the relatively flexible inner container can be absorbed due to their high flexural and torsional stiffness. Since a wire lattice itself has only a low inherent stability, no significant reduction in the lateral bulges can be achieved even by significantly increasing the wire thickness.

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The invention therefore assumes that the wire thickness will be reduced to such an extent that the deformation forces that occur are absorbed as vertical tensile forces by the upper and lower tubular frames.

Another variant of the invention is that the also effective horizontal forces by increasing the Corner moment of inertia can be absorbed to the extent that This also makes the side bulges that occur significantly be reduced.

This is achieved in that in the four corners between

the inner container and the wire mesh on the wire mesh

adapted reinforcement plates are attached, the non-positive

connected to the lower and upper tubular frames.

The composite construction designed in this way between the spot-welded |

thin-mesh wire mesh and surrounding reinforcement plates |

has a high deformation stiffness, a high stacking pressure \

strength and can in comparison to the aforementioned execution 'i

types due to a considerable reduction in the use of materials I

can be produced more cheaply. |

In a further embodiment of the invention, P

a galvanized spot welded wire mesh from an upper one ;

and lower circumferential tubular profile made of galvanized sheet steel, each of which has two inwardly angled webs which run in the longitudinal direction of the tubular profile and form a longitudinal groove into which this spot-welded wire mesh is inserted, the last horizontally running longitudinal wire of the wire mesh from one of these inside rounded webs is clawed. The clear width of this longitudinal groove corresponds to the wire diameter of the vertical bars. The upper circumferential pipe profile is surrounded on the longitudinal and transverse sides by several force-locking pipe clamps arranged at certain intervals. This creates an extremely flexible and twisting construction that contributes to the overall stability of the I.

Wire mesh framework makes a decisive contribution. At the lower circumferential f

The tubular frame encircles the profile, which on the one hand I

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prevent widening and on the other hand a fastening by means of Allow screws and nails on the pallet. This creates a connection that is based on any weld can pull, has a high stability and, due to the fact that pre-galvanized material is used, permanently against corrosion is protected. Due to the process, the wire mesh mat is made with the two tubular profiles attached to the sides in the longitudinal direction brought together on a bending device in the shape corresponding to the inner container. The horizontally running lattice wires should come to lie inwards, which is what the claws do the profile webs in the corner areas favors and thus increases the stability. Due to the tight fit of the wire mesh frame on the inner container also in the corner areas and due to the non-positive running in of the through the inner container Deformation forces acting on the side walls in the lower and upper circumferential tubular profiles will only show a slight bulge achieved.

One advantage of this is that the pallet container is set down tightly side by side these cannot get caught on the horizontal longitudinal wires.

Another inventive feature of the innovation is that the upper and lower tubular borders are connected to each other by vertical struts. Due to the types of loads acting on these vertical struts such as Pressure load, bending stress and transverse forces, these vertical struts are also made as tubular as possible. The number of vertical struts distributed over the circumference is primarily determined by the bulging of the side walls of the Inner container determined between these vertical struts. Receives the inner container also has beads on the four side walls to accommodate the vertical struts, so on the one hand there is a A better use of volume is achieved and, on the other hand, a higher bond stiffness between the container and the lattice frame.

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A further optimization dee ' _t ßaßeriaf ^ Jn ^ atzäs.i> eätht is to reduce the number of vertical struts distributed on the circumference as much as this allows for the stacking pressure load acting on the lattice frame in practice.

However, this inevitably leads to an increased bulging of the inner container. An additional friction fit between the container and the lattice frame with the upper and lower border and The thin-meshed spot-welded wire mesh connected to the vertical struts increases the stability of the bond and acts as a bulge of the inner container.

In the middle of the main and cross strings of the upper circumferential Sheet metal clamps are attached to the pipe profile in order to establish a connection to the four sides between the four diagonal struts. This achieves a high level of transverse stability, which significantly improves the inherent stability of a stack assembly.

In all of these types of embodiment according to the invention, the use of material is compared to that described at the outset previously known Palettfuibehältern significantly reduced. Be like that Material savings of up to 50% achieved despite increased composite stability, which means a significantly larger area of application this packaging container can be tapped.

It is also proposed according to the invention that the inner container In the middle of the floor there is a drainage channel equipped with a slight gradient in the direction of the outlet, the deepest of which Point is not greater than the board thickness of the wooden pallet. This drainage channel thus comes between two floor boards of the wooden pallet to lie and does not protrude from the bottom. It is also proposed that the container bottom on both sides and with one to carry out a slight slope towards this drainage channel. So that this floor comes to lie flat on the pallet, should be provided at certain intervals in the direction of the collecting channel running beads. Although in filled When the floor is empty, it will also lay flat on the wooden pallet Put the floor surface back to its original shape and thus the desired drainage slope towards the collecting channel formi With which an improved emptying of residues is achieved.

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Another feature to improve emptying is there in that it is proposed according to the invention, the corner radii on both sides of the wall retraction provided for the outlet to hold greater than the depth of the ground of this recession. This also creates a natural gradient in the direction of the outlet.

Since the inner pallet containers described here are made of high molecular weight Low-pressure polyethylene of high density are produced in the blow molding process, are to be achieved for procedural reasons to provide corner radii corresponding to a uniform wall thickness distribution. The wall thicknesses in the corners are natural thinnest and strongest in the wall surfaces. It is an embodiment of this container is known from this Basically has an additional support body running on the lower bottom edge of the inner container. This is supposed to Prevent the occurrence of deformations, which tend to occur in the corners. According to the invention it is proposed in the middle of the lower side edge to make the edge radius significantly smaller than the corner radii. The resulting reduction the wall thickness is only insignificant because in this area, due to the process, there are greater wall thicknesses. Since the If the inner container is supported on the outer wire mesh frame anyway, there is also no reduction in strength. Through the Better use of space is also possible by reducing the external dimensions.

The invention is illustrated using the following exemplary embodiments:

Figure 1 - shows a pallet container (1) with wire mesh frame (2) and wooden pallet (3)

Figure 2 - the shape of the lower and upper circumferential wire mesh border.

Figure 3 - the fastening of the lower border on the pallet by means of fastening blocks.

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Figure h - the diagonal bracing of the upper border.

Figure 5 - a section through the longitudinal axis of the container in the area of the lower Sämmelrinne and the catchment area for the outlet.

Figure 6

lind 7 - section of the container in the bottom area with the arrangement the support beads and the floor slope in the direction Collecting channel.

FIG. 8 shows a further embodiment of a pallet container j but with four reinforcement plates (22) arranged in the corner areas between the grid (2) and the inner container (1).

Figure S - shows a detail of a corner area and the formation of the tubular upper and lower border (It) with an integrally formed web (2h).

Figure 10

and FIGS. 11-14 show an embodiment with top and bottom borders (26) and vertical struts (27), as well as the fastening of the vertical struts (27) with the border (26).

Figure 12

and 13 - shows an embodiment with vertical struts (27) and a thin-mesh, spot-welded L wire grille (32) additionally arranged between the inner container (1) and the grid frame (25), as well as the attachment of the wire grille (32) and the vertical struts (27) to the Border (26).

Figure Ik - shows the formation of the side walls of the container with beads (3D.

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In Figure 2 is shown "ate * 'shape of the upper and lower border (U) with the longitudinal groove (S) running in the longitudinal direction, the inwardly angled web plates (6) and the clawing of the web plates (6) running on the reverse side with the last horizontally running longitudinal wires (7) of the wire mesh mat (2).

The attachment of the lattice frame (2) on the wooden pallet (3) is shown in Figure 3, with holding blocks (8) a has upper fastening plate (9) adapted to the pipe shape and downwardly supporting web (10) with the nail hole (11) *

The diagonal bracing (13) of the upper border (k) can be seen from FIG.

Holding clamps (12) connect diagonal struts (13) to one another.

The sectional view of FIG. 5 shows the inner container (1) with the collecting channel (Ik) arranged in the floor area, the indentation (15) as well as the corner radius (R) and the indentation depth (A). Furthermore, the course of the radius on the lower container edges from the corner radii (19) to the central radius (20).

In Figures 6 and 7, the bottom slope (16), the support beads (18) resting on the pallet boards (17) and the central one arranged between two pallet boards <17) lying collecting channel (Ik) shown.

The arrangement of the reinforcement plates (22) in the corner areas and the type of attachment to the web (2k) is shown in FIG and 9 can be seen.

The non-positive fastening by means of welding, riveting or the like between the upper and lower tubular border (26) and the vertical struts (27) can be seen from FIGS. 10 and 11. The vertical struts (27), preferably of tubular cross-section, are deformed at their ends in such a way that a flange-like attachment (28) with the webs (29) running on the lower and upper border (26) is made possible.

/ π Figures 13 and 13 show the additional attachment of a thin-meshed spot-welded wire mesh (32) with an upper and lower border (26) and vertical struts (27) ) the lower and upper border (26) and the horizontally extending bars of the wire mesh welded to the vertical struts (27).

Claims (1)

Claims · *. "'*. ·! >'· · ****. 1. Rectangular plastic pallet container for liquid, paste and powdery goods, supported by a lattice structure (2) is surrounded and fastened on a pallet (3), characterized in that a tight fitting on the inner container (1) spot-welded wire mesh (2) has a circumferential & j tubular border (k) on its upper and lower edge, whose neutral axis is congruent to the central axis of the wire mesh and that the center of the corner radii of this Wire mesh (2) is congruent with the center point of the corner radii (19) of the inner container (1). 2. ... according to claim 1, characterized in that in the four corner areas between the wire mesh (2) and the inner container (1) stiffening plates (22) are arranged with the upper and lower circumferential border (K) are positively connected and that these stiffening plates (22) are in close contact with the wire mesh (2). 3. ... according to claim 1 and 2, characterized in that the reinforcement plates (22) have vertically arranged reinforcement beads (23). k- ... according to claims 1 and 2, characterized in that the upper and lower circumferential border (k) has a web (2k) running in the longitudinal axis of the pipe and the vertical bars (21) of the wire mesh (2) and those arranged in the corners Stiffening plates (22) are welded to this web (2k), 5. ... according to claim 1 and 2, characterized in that the pipe profile (k) in the pipe's longitudinal axis has a longitudinal groove (S) formed by two inwardly beveled webs (6), the web lengths of which are dimensioned towards the inside of the pipe so that the The last grid wire (7) running in the horizontal direction is clawed around by a wire grid mat (2) inserted in this longitudinal groove (5) and that the clear width of this longitudinal groove (5) corresponds to the vertical wire thickness (21) of the wire mesh mat (2). • 4 * « * • 4 tii 4 t 6. ... according to claim 1 and 5, characterized in that the horizontally extending grid wires (7) within the Wire mesh frame (2) are arranged. 7. ... according to claim 1 and 5, characterized in that the upper circumferential tubular border (U) are surrounded on their longitudinal and transverse sides by non-positive clamps (12). 8. ... according to claim 1 and 5, characterized in that the lower circumferential tubular border (U) is attached to the pallet (3) by means of holding blocks (8) and that these holding blocks (8) from an upper fastening pallet adapted to the tube radius ( 9), on which webs (10) supporting themselves on the tube sheet inward are formed, the width of which corresponds to the clear groove width (5) of the tube profile (U) and a nail hole (11) is arranged in the middle of these holding blocks (8) . 9. ... according to claim 1 and 5, characterized in that the upper circumferential tubular border (U) in the Middle of the long and broad sides are covered with sheet metal clamps (12), between which four diagonally extending Stiffening plates (13) are attached. 10. Rectangular plastic container for liquid, pasty and powdery filling goods which are surrounded by a lattice frame and fastened on a pallet, characterized in that the inside container (1) fits tightly Lattice frame (25) has a circumferential tubular border (26) at its upper and lower edge, between which vertical struts (27) are arranged with a preferably tubular cross-section, their vertical neutral central axis are congruent to the neutral axes of the upper and lower borders (26). j 4 Ii it rl 4 * · I Il t * 1 I t I (I lit. * « According to claim 1 and 10, characterized in that the vertical struts (27) are designed at their upper and lower ends as fastening flanges (28) which are connected to the webs (29) of the upper and lower border (26) running in the pipe length axis are positively connected by welding, riveting or the like. 12. ... according to claim 1, 10 and 11, characterized in that the inner container on its four side surfaces (30) Has beads (3D, the distance from one another and the shape of which are adapted to the lattice framework (25). 13. ... according to claim 1 and 10, characterized in that between the pallet container (1) and the lattice frame (25) a wire mesh resting on the pallet container (1) (32) is arranged, which frictionally with the upper and lower border (26) and the vertical struts (27) connected is. Ihi rectangular pallet container made of plastic, characterized in that the bottom of the inner container (1) has an in the bottom center has a collecting channel (lh) running towards the outlet side. 15. ... according to claim lh, characterized in that the bottom of the inner container (1) is directed towards the center of the bottom Has slope (16) and that in this bottom slope run in the direction of the same support beads (18) whose the lower bead edge is flat on the pallet container (17). 16. ... according to claim lh, characterized in that the lower corner radii (19) of the inner container (1) are on Reduce all four sides towards the respective center of the page to a center radius (20). 17. ... according to claim lh, characterized in that the dimension (A) of the indentation (15) in the container wall (1) for the arrangement of the outlet valve is significantly smaller than the corner radii (R) of the lower on both sides of the spout located