FR2922194A1 - Handling pallet for cardboard packing product, has legs each comprising sections with side to rest on ground while other side presents detenting and reception units conformed to allow subjection of sections at intersection of sections - Google Patents

Abstract

The pallet has legs each comprising sections such as longeron or lower section (2) and traverse or upper section (3), obtained by folding/rolling sheets of a cardboard and/or made of a molded plastic/reconstituted wood material. The sections comprise a side (10) to rest on a ground while other side (11) presents detenting and reception units. The units comprise two opposite diametric recesses (12, 14), a triangular shaped seat and a complementary shaped recess. The units are conformed to allow subjection of the sections at a level of intersection of the sections.

Description

The present invention relates to a pallet handling. Handling pallets are already known essentially consisting of the assembly of profiles obtained by folding and / or rolling cardboard sheets, or profiles of molded material such as plastic or reconstituted wood, able to be assembled together. to others by crossing and overlapping, and to be secured through notches of complementary shapes for securing by interlocking and snap. The purpose of handling pallets, particularly in cardboard, is to replace wooden pallets. To this end, they have many advantages, in particular that some are storable and transportable dismounted or even flat, they are also lighter, and in addition they can, after use, be managed with cardboard packaging products. view of a recycling. In general, the profiles that constitute these pallets handling are arranged in two series that can be at different levels, the profiles of a series or a level intersecting, generally perpendicularly, the profiles of the other series. Furthermore, the profiles of the lower level are shaped to form a seat, while those of the upper level each have a flat face which participates in the formation of a receiving tray of the products to be palletized. It has also been proposed paperboard handling pallets comprising two superimposed levels, the lower level consisting of a juxtaposition of cardboard sections made by folding and / or rolling cardboard sheets, while the upper level consists of a tray made by superposition of cardboard sheets and having lower means for securing said profiles. However, according to their design, these pallets do not all have all the aforementioned advantages. Most of these pallets have some instability under load, so that in some areas of activity it is still better to use wooden pallets. Moreover, these pallets remain expensive, and many of them are necessarily delivered mounted, depriving them of a major advantage namely the small storage space and transport. The disadvantages of instability essentially come from the mode of association and joining of the profiles to each other. To overcome this drawback, it is proposed handling pallets where this bonding is achieved by manufacturing by gluing, which allows to obtain a pallet of increased strength but which against can not be stored and transported disassembled. The present invention aims to overcome these various disadvantages by providing a handling pallet cardboard or molded material, low manufacturing cost, transportable disassembled, and a very high strength, much higher than pallets existing handlings. The handling pallet according to the invention is of the type consisting of the assembly of profiles obtained by folding and / or rolling cardboard sheets, and / or profiles of molded material, able to be assembled to each other by crossing each other and being superimposed, and to be secured through notches of complementary shapes allowing interlocking by interlocking and snapping, and it is essentially characterized in that it comprises feet each consisting of a profile and comprising a side intended for rest on the ground while the other side has reception and latching means shaped to allow the securing of two profiles, namely a lower profile or spar and an upper section or cross, at the intersection of those -this. According to an additional feature of the handling pallet according to the invention, the receiving and detent means are designed to allow the latching of the upper profile immobilizes the lower profile.

According to another additional feature of the handling pallet according to the invention, the receiving and detent means comprise on one hand on each of the feet a notch of complementary shape to that of the section of a lower profile allowing to accommodate the latter, a notch of general shape complementary to that of an upper profile and associated with salient elements adapted to be forcibly engaged in notches made in said upper profile, while said lower profile has a hollow cavity for receiving a portion of said upper profile so that the latter immobilizes said lower profile longitudinally relative to said foot. According to another additional feature of the pallet handling according to the invention, the feet consist of tubes, axis perpendicular to the general plane of the pallet. According to another additional feature of the handling pallet according to the invention, the feet consist of round section tubes.

According to another additional feature of the handling pallet according to the invention, the lower sections have a trapezoidal profile, defining a wide lower side and a narrow upper side, the wide bottom side being turned towards the feet.

According to another additional feature of the handling pallet according to the invention, the lower profiles are shaped by folding a sheet of cardboard, and by winding downwards and inside the two longitudinal edges of said sheet, in on the one hand that the narrow upper side is in one piece, that on the other hand the lower broad side comes from the juxtaposition of two strips from the folding and winding, and finally to create a central core perpendicular said two sides by joining two strips also from folding and winding.

According to a variant of the handling pallet according to the invention, each of the feet is in the form of a profile from the folding and rolling of a sheet of cardboard, folded so as to create a seat adapted to receive a profile inferior. According to an additional feature of the variant of the pallet handling according to the invention, the seat has the shape of a V, while the lower section have a triangular profile, or trapezoidal, defining a wide upper side, and a lower side narrow, or pointed. According to another additional feature of the handling pallet according to the invention, whatever the embodiment, the upper profiles have a triangular profile, or trapezoidal, defining a wide upper side forming part of the plane intended to receive the load, and a narrow lower side, or pointed.

According to another additional feature of the handling pallet according to the invention, the upper profiles are shaped by folding a sheet of cardboard, and by winding down and inside the two longitudinal edges of said sheet, in so on the one hand that the wide upper side is in one piece, that on the other hand the narrow or narrow bottom side comes from the juxtaposition of two strips from the folding and winding, and finally to create a soul central perpendicular to said two sides obtained by joining two strips also from folding and winding. The advantages and characteristics of the pallet of handling according to the invention will emerge more clearly from the description which follows and which refers to the appended drawing, which represents several non-limiting embodiments thereof. In the accompanying drawing: - Figure 1 shows a schematic perspective view of a pallet handling according to the invention. - Figure 2 shows a partial schematic perspective and exploded view of the same pallet handling. - Figure 3 shows a partial schematic perspective and exploded view of a variant of the same pallet handling. With reference to FIG. 1, a handling pallet according to the invention consisting of the assembly of different cardboard sections can be seen. This pallet thus comprises feet 1, longitudinal members 2 and crosspieces 3, the crosspieces 3 being disposed perpendicularly to the longitudinal members 2 and above them, the intersection of a cross member 3 with a longitudinal member 2 being formed, according to the invention, at a foot 1, and the longitudinal members 2 are of a thickness greater than that of the crosspieces 3. In this embodiment, the feet 1 consist of 15 cardboard tubes which each have a side 10 which rests on the ground, and a side 11 to which are secured a spar 2 and a cross 3. With reference also to Figure 2, it can be seen that a spar 2 has a trapezoidal profile, defining a lower side 20 wide and a narrow upper side 21. The spar 2 comes from folding a sheet of cardboard, by winding down and inside. The upper side 21 consists of the middle part of the cardboard sheet, while the longitudinal edges are folded and wound to form the lateral sides 22 and 23 oblique of the longitudinal members 2, and two strips 24 and 25 juxtaposed which create the lower side 20, and which are extended by two strips 26 and 27 contiguous which extend perpendicularly between the sides 20 and 21 to form a reinforcing core. The cross member 3 also has a trapezoidal profile defining a wide upper side and a narrow lower side 31. The crossbar 3 also comes from the folding of a sheet of cardboard, by winding down and inside. The upper side 30 consists of the middle part of the cardboard sheet, while the longitudinal edges are folded and wound to form the two oblique lateral sides 32 and 33, two strips 34 and 35 juxtaposed which create the lower side 31, and extended two strips 36 and 37 contiguous extending perpendicularly between the sides 20 and 21 to form a core.

The sleepers 3 are intended to be assembled to the longitudinal members 2, and for this purpose the longitudinal members 2 comprise, at each of the coupling zones, a notch 28 intended to house a cross member 3 perpendicularly, and coming from the transverse cut-out on the side 21, and the partial cut of the lateral sides 22 and 23. The side 11 of each of the feet 1, only one of which is visible in FIG. 2, comprises means for securing a spar 2 and a cross member 3. In this case, the foot 1 comprises two notches 12 diametrically opposed, cut in the edge 13 of the wall of the tube, to the shape of the section of a spar 2, so that, because of one hand of the trapezoidal shape of this section, and secondly that the opening of the notch 12 corresponds to the narrow side 21, the notches 12 are retentive, the spar 2 can be placed there through an axial introduction. The foot 1 also comprises two notches 14 diametrically opposed, angularly offset by 90 ° with respect to the notches 12, each cut in the edge 13 of the wall of the tube to the shape of the cross section of a cross member 3 while presenting at the the edge 13, on either side of the opening of the cut, two fingers 15 projecting towards each other. After placing the spar 2 in the notches 12, and after its positioning so that the notch 28 is in alignment with the notches 14, a crossbar 3 is approximated and engaged on the one hand in the notch 28 and on the other hand in the notches 14, for this purpose, the lateral sides 32 and 33 are pierced with openings 38 intended for the passage in force of the fingers 15.

The establishment of the cross member 3 and its attachment to the foot 1 by snapping the fingers 15 in the openings 38, also allows the immobilization of the spar 2 relative to the foot 1, so as to obtain a pallet handling a high rigidity. The rigidity of the plate constituted by the assembly of the longitudinal members 2 and crosspieces 3, associated with the rigidity of these side rails 2 and crosspieces 3 due to their design, as well as the rigidity of the connection with the feet 1, makes it possible to withstand most of the effort at the feet 1, which can be particularly resistant because of their design.

In addition to its static resistance, the pallet handling has good stability in dynamics, due to the rigidity of the assembly. Referring now to Figure 3, we can see a manufacturing variant of the pallet handling according to the invention, which differs essentially from the design of the feet. In this embodiment, the pallet is also made up of the assembly of various cardboard sections, namely feet 4, longitudinal members 5 and crosspieces 6, the crosspieces 6 being disposed perpendicularly to the side members 5 and above those here, the intersection of a crossbar 6 with a spar 5 being produced, according to the invention, at a foot 4, and the spars 5 are of a thickness greater than that of the crosspieces 6.

Each of the longitudinal members 5 has a triangular profile and thus has an upper side 50 wide for receiving cross members 6, opposite two oblique lateral sides 51 and 52 which meet at a lower point in a point. The spar 5 comes from the folding of a sheet of cardboard, by winding down and inside. The upper side 50 consists of the middle part of the cardboard sheet, whose longitudinal edges are folded and wound to form the lateral sides 51 and 52, which are extended by two adjoining strips 53 and 54 which extend perpendicularly to the upper side 50 to form a reinforcing soul.

Note that the side members may also, in an alternative embodiment, have a trapezoidal profile. Each of the sleepers 6 is of identical design to that of the crosspieces 3, it thus has a trapezoidal profile defining a wide upper side 60 and a narrow lower side 61. The crossbar 6 comes from the folding of a sheet of cardboard, by winding down and inside. The upper side 60 consists of the middle part of the cardboard sheet, while the longitudinal edges are folded and wound to form the two oblique lateral sides 62 and 63, two strips 64 and 65 juxtaposed which create the lower side 61, and extended by two strips 66 and 67 contiguous extending perpendicularly between the sides 60 and 61 to form a core. The crosspieces 6 are designed to be assembled to the longitudinal members 5, and for this purpose the longitudinal members 5 comprise, at each of the coupling zones, a notch 55 intended to house a cross member 6 perpendicularly, and coming from the transverse cutout on the side upper 50, and the partial cut of the lateral sides 51 and 52.

Each of the feet 4 has a base 40 intended to rest on the ground, surmounted by a seat 41 of triangular shape for receiving a spar 5, and which comes from the juxtaposition of the two profiles 42 and 43 of triangular shape. The foot 4 consists of a profile coming from the folding and winding upwards and inwards of a sheet of cardboard, the middle part of the latter constitutes the base 40, the folding of each of the lateral edges and their inward winding for forming the triangular section profiles. 42 and 43.

Each of the triangular profiles 42 and 43 has at its apex a notch 44 of shape complementary to that of a section of a cross member 6, allowing the subjection thereof after placing a spar 5 in the seat 41. notches 44 are provided at their opening, with fingers 45 projecting inwards and intended to be forced into notches 68 that includes the crossbar 6, formed in the oblique lateral sides 62 and 63. Whatever its embodiment, the handling pallet according to the invention is storable and transportable disassembled. Furthermore, apart from the feet 1, the elements that make up the pallet can be stored and packaged flat, and shaped at the time of assembly, which can be performed without any gluing operation. Note that the present description and the drawings relate to a pallet handling cardboard, but it should be noted that it is perfectly possible to use other materials than the cardboard, it is possible to use profiles in molded material, such as plastic or reconstituted wood, as is possible to manufacture a pallet, to use components of different origins. It is thus possible to design a pallet whose feet 1 are made of molded material, while the rest of the pallet is made of folded cardboard.

Claims (11)

1) Pallet handling of the type consisting of the assembly of profiles (2, 3; 5, 6) obtained by folding and / or rolling of sheets of cardboard, and / or of molded sections, able to be assembled together to others by crossing and overlapping, and to be secured through notches (12, 14, 28, 38, 44, 55, 68) of complementary shapes for interlocking and interlocking, characterized in that it comprises feet (1; 4) each consisting of a profile comprising one side (10; 40) intended to rest on the ground while the other side (11) has receiving and latching means (12, 14). ,; 41, 44) shaped to allow the securing of two sections, namely a lower profile or spar (2; 5) and an upper or cross section (3; 6), at the intersection thereof. . 2) Pallet according to claim 1, characterized in that the receiving and latching means (12, 14,; 41, 44) are designed to allow the latching of the upper profile (3; 6) to immobilize. the lower profile (2; 5). 3) pallet according to claim 1 or claim 2, characterized in that the receiving means and latching comprise on one hand on each of the feet a notch (12; 41) of complementary shape to that of the section a lower profile (2; 5) for accommodating the latter, a notch (14; 44) of general shape complementary to that of an upper profile (3; 6) and associated with projecting elements (15; ) adapted to be engaged by force in notches (38; 68) formed in said upper profile (3; 6), while said lower profile (2; 5) has a hollow cavity (28; 55) intended to receive a portion said upper profile (3; 6) so that the latter immobiliseledit lower section (2; 5) longitudinally with respect to said foot (1; 4). 4) Pallet handling according to any one of the preceding claims, characterized in that the feet (1) consist of tubes with an axis perpendicular to the general plane of the pallet. 5) Pallet according to claim 4, characterized in that the feet (1) consist of round section tubes. 6) pallet according to any one of the preceding claims, characterized in that the lower sections (2) have a trapezoidal profile, defining a wide bottom side (20) and a narrow upper side (21), the wide bottom side (20) being turned towards the feet (1). 7) pallet according to claim 6, characterized in that the lower sections (2) are shaped by folding a sheet of cardboard, and by winding down and inside the two longitudinal edges of said sheet , on the one hand that the narrow upper side (21) is in one piece, that on the other hand the wide bottom side (20) comes from the juxtaposition of two strips (24, 25) from the folding and winding, and finally to create a central core perpendicular to said two sides (20, 21) (60, 61) obtained by joining two strips (24, 25) also from the folding and winding. 8) pallet according to any one of claims 1 to 3, characterized in that each of the feet (4) is in the form of a profile from the folding and rolling of a sheet of cardboard folded into kind of create a seat (41) adapted to receive a lower profile (5). 9) Pallet according to claim 8, characterized in that the seat (41) has the shape of a V, while the lower section (5) have a triangular profile, or trapezoidal, defining a wide upper side (50). ), and a narrow or pointed lower side. 10) pallet according to any one of the preceding claims, characterized in that the upper profiles (6) have a triangular profile, or trapezoidal, defining a wide upper side (60) forming part of the plane for receiving the load, and a narrow, narrow or pointed bottom (61). 11) pallet according to claim 10, characterized in that the upper profiles are shaped by folding a sheet of cardboard, and by winding down and inside the two longitudinal edges of said sheet, so that on the one hand that the wide upper side (60) is in one piece, that on the other hand the narrow or narrow lower side (61) comes from the juxtaposition of two strips (64, 65) from the folding and winding, and finally to create a central core perpendicular to said two sides (60, 61) obtained by joining two strips (66, 67) also from the folding and winding.