FR2619799A1 - CORRUGATED CARDBOARD REEL FOR TRANSPORTING AND UNWINDING CROWNS OF LONG WOUND PRODUCTS - Google Patents

Abstract

The invention relates to a corrugated cardboard drum, intended for the transport and unwinding of crowns of long products, characterized in that it consists of two flanges 7A, 7B formed by at least a first corrugated cardboard disc, of external diameter. D on which is applied a second corrugated cardboard disc, provided, over its entire periphery, and up to a diameter d less than D and corresponding to the diameter of the half-hub 6, notches, thus forming a set of tabs 5 which, after bending at 90degre (s) with respect to the plane of the disc, constitute the half-hub. It has a central orifice 9 for the passage of the unwinding hub, and a plurality of holes 8 for the passage of the bands or straps for strapping the crowns.

Description

i 2619799 TOURET El CATOU MDULE FOR TRA $ SPORT AND DEVIDME

  LONG PRODUCT CROWNS

TECHNICAL DOKAIUE OF INVETION

  The object of the invention is a reel made of corrugated cardboard intended for the transport and the unwinding of products wound in cut crowns, such as copper or aluminum tubes, or plastic materials, this reel being adaptable, at the time of packaging, i height

of the crown.

  STATE OF THE ART A certain number of long products are, at the end of production, wound in cut crowns, containing a predetermined length (or weight or volume) of said product. It is then a question of packing this crown and immobilizing the turns, for the purpose of its transport, and, possibly, facilitating its unfolding

at the time of final use.

  This is the case, for example, of small diameter copper tubes (known as "ACR" tubes) coming out of drawing machines (for example ROTUBLOCS), forming crowns whose unit length can reach 1000 to 2000 meters, the external diameter of the tube being

  around ten millimeters.

  The use of reels, wooden or metal, is not always very practical, because they have fixed dimensions, which cannot be modified, and their value often forces them to manage a deposit and deposit system.

  return of empty drums which increases overhead costs.

  It would therefore be interesting to have a light, low-cost reel (therefore lost, without deposit or return) and dimensions immediately adaptable, at least to a certain extent, to the size of the crowns to be packaged, this reel can also be used

  to unroll the product during final use.

OBJECT OF THE INVENTION

  The present invention solves this problem.

  It is characterized in that the reel, assembled, at the time of use, (that is to say the packaging of the long product crown) is constituted by two flanges 7A, 7B formed by at least one first disc 1 of corrugated cardboard, of outside diameter D to which a second disc 3 of corrugated cardboard is applied, provided, over its entire periphery, and up to a diameter d less than D, and corresponding to the diameter of the half-hub 6 to be formed, of notches 4, thus forming a set of tongues 5 which, after folding to 90 relative to the plane of the disc, constitute the half-hub 6 (A or B).

DESCRIPTIOW OF IWVENTION

  Figures 1, 2 and 3 illustrate the invention.

  Figure 1 shows, in top view (upper part), the cut corrugated cardboard disc, before lifting the tabs, intended to form the central hub, and in CC section (lower part),

  disc after lifting (folding to 90) of the tabs.

  FIG. 2 represents, in perspective, the two elements A and B,

  intended to form the reel, before their installation.

  Figure 3 shows, in perspective, a cut crown of

  long tubular product, wound on a reel according to the invention.

  The starting point consists on the one hand of two disks 1 and

  2 in corrugated cardboard of diameter D of the "double-double" type, that is to say

  say whose structure comprises (in section): a cover sheet, a sheet of fluting, a middle sheet, a second sheet of fluting and a cover sheet, the two discs being glued over their entire surface and their fluting being crossed, and, on the other hand, a third disc 3, also of corrugated cardboard - also, but not necessarily -, of diameter D, cut into a star, by radial notches 4, over its entire periphery, between the diameter D and a diameter d, less than D, and corresponding to the diameter of the hub 6 to be formed. The notches define a set of radial tabs 5, distributed over the entire periphery of the disc 3. The disc 3 is glued to the disc 1 + disc 2 assembly, from the center to the diameter d. The tongues 5 are then raised and bent at 90 relative to the plane of the discs, thus forming the half-hub 6 (A or B) whose configuration appears on the lower part

  in Figure 1 (in section), and in Figure 2 (in perspective).

  Each flange 7A, 7B (discs 1 + 2 + 3, tabs 5 raised) thus obtained, is provided with a certain number of holes 8 (for example 4 in the case of FIG. 2), preferably reinforced with plastic eyelets or metal, which will be used to pass ribbons or strapping bands and finally a central hole 9, through which

  will pass the axis of the long product unwinding system.

  The instructions are then as follows: the crown 10 of long product is placed flat on a table or any flat support. The upper flange 7A, the raised tabs 5 of which have possibly been fixed by a strip

  adhesive tape circular 11 is engaged in the crown.

  We rock the assembly of 180, and we engage the second flange 7B in the same way. The assembly therefore automatically adjusts to

the thickness of the crown.

  Two straps 12 in steel strip or in plastic tape possibly reinforced with fibers, ensure the connection of the two flanges and the cohesion of the assembly which then appears as

in figure 3.

  This implementation of the invention may undergo some variants for example, the two discs 1 and 2 which constitute the base of each flange can be replaced by a single disc if there is corrugated cardboard of sufficient mechanical strength (so-called quality "triple groove") or reinforced by various means, or of higher grammage. The disc 3, from which the tongues 5 are formed, may have a smaller or larger diameter than D depending on the height of the

crowns to be wrapped.

  The choice of qualities of corrugated cardboard also depends on the packaged products which can range from plastic tube to copper tube or aluminum wire rod or electrical wire and cable, for

give just a few examples.

3 EXAMPLE OF GETTING STARTED

  The invention has been implemented for the packaging of crowns of copper tube A.C.R., of external diameter of the order of 5 to 25 μm, of unit length of the order of 500 to 2000 meters, of weight included

between 50 and 150 kg.

  For this type of crown, the discs have a diameter D of the order of 950 to 1100 mm, and a diameter d of the order of 550 to 650 nmm, which

  adapt to cut crowns, 20 to 35 cm high.

ADVANTAGES OF INVEKTION

  This type of drum, assembled at the time of use, from discs

  corrugated cardboard initially flat - so space-saving to store -

  has the following advantages: - elimination of the inner hub of fixed height - adaptable to any crown height in a large range of around 15 cm - adaptable to a wide variety of long, plastic products,

  metallic or mixed (electric wires and cables for example).

  - accepts crowns with faces having a very approximate parallelism good contact between flanges and faces of the crown, which ensures, in storage, good flatness and reduces risks

  of "tangling" (stringing during the course).

  - significantly reduces the cost of transporting cardboard

at the factory.

REVEUDICATIONS

  1. Corrugated cardboard reel, intended for the transport and unwinding of crowns of long products, characterized in that it consists of two flanges 7A, 7B formed by at least one first disc 1 of corrugated cardboard, of external diameter D on which is applied a second disc 3 of corrugated cardboard, provided, over its entire periphery, and up to a diameter d less than D and corresponding to the diameter of the half-hub 6, of notches 4, thus forming a set of tongues 5 which, after folding at 90 relative to the plane of the disc,

make up the half-hub.

  2. Reel according to claim 1, characterized in that each flange is formed by the association of two discs 1 and 2 of corrugated cardboard, associated by bonding, and a third notched disc 3, glued to the disc assembly 1 - disc 2 from the center to the diameter

d.

  3. Reel, according to claim 1 or 2, characterized in that it comprises a central orifice 9 for the passage of the unwinding hub, and a plurality of holes 8 for the passage of ribbons or strips

crown strapping.