FR2938509A1 - PACKAGING UNIT IN CARDBOARD ONDULE AND APPARATUS FOR MANUFACTURING SUCH A BOX - Google Patents

Abstract

It is a corrugated packaging box for transporting a load and an apparatus for forming such a box. It includes an open box, a cover and a cardboard blocking plate for holding the load in place. The wedging plate comprises a central panel, two opposite first flaps respectively connected to two corresponding peripheral edges by marking grooves, of height greater than the height of the box and at least two opposite second tab flaps respectively connected to the other two edges. peripherals of said panel by marking grooves. The wedging plate is pressed into the box, the first and second flaps cooperating frictionally with the inner walls of the box, the free end edges of the first flaps being folded in force horizontally and blocked by the inner face of the lid so that the load is blocked by compression between the plate and the bottom.

Description

The present invention relates to a corrugated packaging box for transporting a load, comprising an open box having four vertical walls and a horizontal bottom, a cover comprising flaps glued to the upper periphery of the box and a cardboard staple plate for holding the load in place. It also relates to an apparatus for manufacturing such a box. Packaging crates 15 are already known for the transport of objects of different shape and random including the frame of the mail order. The different types of objects both in quantity and in shape cause difficulties in blocking these objects in the box, which can only be of standardized size. Various embodiments of blocking objects inside the body could thus be imagined. Systems which block them by insertion in thermoformed plastic films are particularly known. Such devices nevertheless have drawbacks and in particular require a complex thermoforming installation and which may lead to risks of damage to the products to be packaged in view of the use of heat.

Systems using polystyrene chips and / or simply crumpled papers are also known.

Such systems are not efficient, require a large workforce and generate waste in large quantities.

The present invention aims to overcome these

disadvantages and finds a particularly important application although not exclusive in the field of mail order and more particularly of apparatus and / or objects for medical use.

It is particularly effective for bulk crating, for example more than 15,500 per day.

The present invention therefore proposes a box and a packaging device that responds better than those previously known to the requirements of the practice, in particular in that it allows blocking

20 of the load effectively by means of a wedge which is not glued but which adapts to all forms of products to stall in the box ensuring a perfect fit.

The wedge that is used being made of corrugated cardboard

25 is a clean, non-polluting, recyclable, non-messy material which, depending on the type of product, may be heavy, light, strong, of different constitution or shape in terms of both its thickness and its number of grooves (double

30 grooves, thin grooves, etc.).

With the design of the body according to the invention and with the corresponding apparatus, the stalling operation can be performed automatically, which makes it possible to considerably reduce the costs, since the material of the wedge (corrugated cardboard) is also less expensive. that used in most other technologies such as those mentioned above (addition of blocking material or shimming by shrink film for example). For this purpose the present invention essentially proposes a corrugated cardboard packaging box for transporting a load, said box comprising an open box having four vertical walls and a horizontal bottom and a lid comprising flaps glued to the upper periphery of the container. box, characterized in that it comprises a cardboard wedging plate intended to hold said load in place, the wedging plate comprising a central panel of dimension slightly smaller than the horizontal section of the box,

in that said central panel comprises two opposite first flaps respectively connected to two corresponding peripheral edges by marking grooves, said first flaps being arranged to have a height greater than the height of the walls when the panel of the plate is pressed onto the load previously introduced into the box and at least two opposite second tab flaps respectively connected to the two other peripheral edges of said panel by marking grooves,

in that said wedging plate is pressed into the box in order to be in contact with said load, the first and second flaps cooperating frictionally with the inner walls of the box, the free end edges of the first flaps being folded in force horizontally and blocked by the inner face of the cover so that the load is blocked by compression between the plate and the bottom.

In advantageous embodiments, one or more of the following provisions are also used. each first flap consists of a rectangular flap of height greater than 2/3 of the height of the box;

each first flap is greater than or equal to 1/3 of the width of the box; - The box has two second flaps in the form of tab by side; The marking grooves are only folding initiation lines, maintaining a high elasticity resistance. In other words, the marking grooves are simply pre-folds, making it possible for the carton 20 to bend at this point in the event of force exerted on the latter, contrary to the actual fold lines, which are deeper; - The thickness of the corrugated cardboard is of the order of 3mm.

The invention also proposes an apparatus for the manufacture of a box as described above, characterized in that it comprises means for feeding the plate to a previously formed and loaded box, means of introduction in force of the plate in the box and internal plating of the first flaps on the inner face of the wall of the corresponding box at the upper periphery of the box, means for folding the ends of the first flaps into force inside the box horizontally at said upper periphery, sizing means and plating means for bonding the lid to the opening of the box thus blocking the load between the plate and the bottom of the box; checkout.

The invention will be better understood on reading the following description of the embodiments described below in a nonlimiting manner with reference to the figures.

Figure 1 is a plan view of a wedging plate used according to a first embodiment of the invention.

Figure 2 is a plan view of a second embodiment of a wedging plate usable according to the invention.

Figure 3 shows a partially exploded view, a box according to the embodiment of the invention more particularly described.

Figure 4 is a sectional view of a box according to one embodiment of the invention.

FIG. 5 is a schematic side view showing the different positions of an apparatus according to the embodiment of the invention.

Particularly described here.

FIG. 1 shows a wedging plate 1 according to a first embodiment of the invention, made of corrugated cardboard, of thickness for example 3 mm.

It has a rectangular central panel 2

30 which comprises two first rectangular flaps 3 connected to the respective peripheral edges 4 and 5 opposite of the central panel 2 by marking grooves 6.

The first flaps 3 have a height H arranged to be greater than a given height Ho, Ho being for example equal to 1/3, 1/2 or 2/3 of the height of the box which will be described below . The central panel 2 further comprises on each of its other two opposite edges 7 and 8, two second flaps 9 identical, rectangular, small dimensions forming tab.

In an advantageous embodiment, the peripheral sides 4 and 5 of the central panel are for example 30 cm wide, for example 296 mm, while the peripheral edges 7 and 8 of said panel are of width 450 mm, for example 446 mm. mm.

The first flaps are of the order of 160 mm high and 150 mm wide, the small flaps being for their part regularly distributed on both sides on the peripheral edge 7 and 8, opposite, being away from the edge by 50 mm while having a width of 20 mm and a height of 80 mm. This is a specific non-limiting embodiment, more particularly interesting in the context of relatively small packaging used in the field of medical products and in particular in the dental field. Figure 2 shows another embodiment of a wedging plate 10 according to the invention. In the following we will use the same reference numbers to designate the same elements or similar elements. The plate 10 comprises a central panel 2, first flaps 3 as described with reference to Figure 1. It has only against two side tongues 11 on these two opposite sides 7 and 8, said tabs extending over the essential from the periphery for example the eight tenth or six tenths of the length of the corresponding peripheral edges 7 and 8.

There is shown in Figures 3 and 4 a box and a box according to the embodiment of the invention more particularly described here.

FIG. 4 shows in particular in section a packaging box 12 made of corrugated cardboard for transporting a load 13, said box comprising an open box 14 comprising four vertical walls (see FIG. 3) 15, 16, 17 and 18 and a horizontal background 19.

The box 12 further comprises a cover 20 known per se comprising a rectangular cover panel 21 and four side flaps 22 connected to said cover panels 21 by fold lines 23.

The box 12 further comprises the plate 1 for wedging as described with reference to Figure 1 and whose panel is of a size slightly smaller than the horizontal section of the box, for example 1 to 2 mm on each side.

The wedging plate 1 is pressed downwardly (arrow 24) to come to rest and / or press on the load 13 previously introduced into the box, so that the plate of the panel 2 is therefore slightly smaller in size. at the horizontal cross section of the box, there is pressurization and friction by the tabs 9 and the first flaps 3 on the inner walls opposite said box. This creates frictional forces on the peripheral edges of the wedging plate which will allow to hold it in place rigidly and particularly efficiently. The plate 1 may and / or will otherwise twist increasing said friction forces in some places allowing improved blocking.

The free end edges 25 and 26 of the first flaps 3 are also folded in force between two points of support represented by the arrows 27 inside the box and 28 outside the box to be placed substantially horizontally in the right This causes the carton of the first flaps 3 to bend substantially randomly and irregularly at 30 and 31 which generates additional strength efforts.

To do this, the cover 21 actually comes into contact with its inner face 32 on the incorrectly folded ends 25 and 26 of the first flaps, the flaps 22 of said cover being fixed by gluing on the upper end. outer faces of the box in a manner known per se, for example after glue line sizing (for example hot melt) of said peripheral edges and folding of said flaps of the pressure cover from above.

FIG. 5 shows an embodiment of the apparatus schematically in side view according to one embodiment of the invention.

The box 14 is for example brought on a treadmill or conveyor 33 known in itself, then is filled by the load 13 via filling means 34 depending on the type of load and which may also be possibly filling means by hand. The conveyor 33 then brings the box 14 with its load 13 to a position 35 of placing the plate.

This plate is fed by means known per se (for example flip-flop) 36 from a magazine 37 and is disposed substantially above the opening 38 of the box 14. Then the wedging plate is lowered with force introduction means 39 comprising a jack chuck 40 and control means (not shown) of the position of the upper part of the load 13 so as to avoid crushing the products.

More specifically, the mandrel comprises for example four independently controlled cylinders with adjustable pressure, knowing that the distance between strokes cylinders can be several centimeters, to allow the plate to marry the load.

Given the marking grooves of the first flaps and second flaps they will pre-bend to come scrub along the inner walls of the box. Pressurizing means, for example by cylinder 41, are provided with backpressure means 42, for example at the same station as that of pressurizing the plate on the load.

Then means 43 for folding the upper ends of the first flaps are provided, before escaping from the top, leaving the box with its ends first pre-folded flaps. The cover 21 is then brought from a cutting magazine 44 to the box. Finally, step 45 is performed (see FIG. The cover 21 is finished to be laid by exerting pressures in a manner known per se from means of the jack type (see arrow 46, 47 and 48), after gluing (see mixed line 49) of the upper parts. of the fund. As goes without saying and as it follows from the foregoing, the present invention is not limited to the embodiments more particularly described. On the contrary, it embraces all the variants and in particular those where the wedging plate is made of different cardboard material, for example of lower weight or of higher weight than that of

the box.

Claims (7)

REVENDICATIONS1. Corrugated cardboard packaging case for carrying a load, said box comprising an open box having four vertical walls and a horizontal bottom and a lid comprising flaps glued to the upper periphery of the box characterized in that it comprises a plate cartoning wedge intended to hold said load in place, the wedging plate comprising a central panel of a dimension slightly smaller than the horizontal section of the box, in that said central panel comprises two opposite first flaps respectively connected to two edges corresponding peripherals by marking grooves, said first flaps being arranged to have a height greater than the height of the walls when the panel of the plate is plated on the load previously introduced into the box and at least two opposite second tab flaps connected respectively to the other two peripheral edges of said panel by marking grooves, in that said clamping plate is pressed into the box in order to be in contact with said load, the first and second flaps cooperating frictionally with the inner walls of the box, the edges free end of the first flaps being folded in force horizontally and blocked by the inner face of the cover so that the load is blocked by compression between the plate and the bottom. 2. Packaging box according to claim 1, characterized in that each first flap is constituted by a rectangular flap of height greater than 2/3 of the height of the box. 3. Box according to any one of the preceding claims characterized in that each first flap is of greater than or equal to 1/3 width of the box. 4. Packaging box according to any one of the preceding claims, characterized in that it comprises two second tab-shaped flaps per side. 5. Packaging box according to any one of the preceding claims, characterized in that the marking lines are only folding initiation lines, retaining a high resilience elasticity. 6. Case according to any one of the preceding claims, characterized in that the thickness of the corrugated cardboard is of the order of 3mm. 7. Apparatus for the manufacture of a box according to any one of the preceding claims, characterized in that it comprises means for feeding the plate to a box previously formed and loaded, means for introducing force into force. the plate in the box and internal plating of the first flaps on the inner face of the wall of the corresponding box at the upper periphery of the box, means for folding the ends of the first flaps in force towards the inside of the box; horizontal box at said upper periphery, sizing means and plating means for bonding the lid to the opening of the box thereby blocking the load between the plate and the bottom of the box.