FI85969C - Cardboard drum for transporting and unwinding rolls of elongated material - Google Patents

Description

1 85969

The invention relates to a cardboard drum for transporting and unloading windings of long products, consisting of two staples, which in turn consist of at least one first board with an outer diameter D, on which a second board is placed, in which a second board , that a tongue assembly is formed which, after being folded relative to the plane of the 90® plate, forms members of a hemisphere with diameter d.

Various long products, when coming from the production line, are developed into coils by a transverse feeder containing a predetermined number of meters (or amount of weight or volume) of said product. It is therefore an object to pack this coil and lock in place the turns for transporting the coil and possibly to facilitate its disassembly during end use.

This is the case, for example, in the case of small-diameter * copper pipes (so-called ACR pipes) which come from traction units (for example Rotubloc machines) and which form ** ** 25 coils, which can be 1000-2000 meters long. with a pipe diameter of about ten millimeters.

I! The use of wood and metal reels is not always very practical, as they have fixed dimensions that cannot be changed, and their high price often forces the organization of a storage and return system for empty drums, which in turn increases overhead costs.

____; It would therefore be advantageous to have a light drum available,. 35 which would be inexpensive and thus disposable, without the need for storage or return, and which would be quickly and at least to some extent adaptable to the dimensions of the 2 85969 coils to be packaged and which could also be used to unfold the product at the time of use.

The present invention makes it possible to solve this problem. It is characterized in that, in order to form said drum of said small-sized zincs at the time of use, before folding, the second plate has notches along the entire circumference up to diameter d forming a tongue assembly which, after folding, forms a hub, 10 and so that the thickness of the drum is automatically adjusted according to the thickness of the coils formed by the products.

Figures 1, 2 and 3 illustrate the invention.

Fig. 1 shows a top view (top) of a notched corrugated board before lifting the tongues for forming the center, and a sectional view CC (bottom) of the disc 20 after the tongues have been raised (bending angle 90 °).

Figure 2 shows a perspective view of both parts A and B for forming the drum before they are put in place.

: · * 2 5; Figure 3 is a perspective view of a long, tubular coil wound on a transverse feeder in development of the invention; ; to the drum.

30 The starting point, on the other hand, is two corrugated boards; coils 1 and 2 of diameter D, which are of the double-double type with a different structure. : that is, is as follows (in cross-section): top layer, grooved layer, middle layer, second grooved layer and top layer. 35 lys layer, both discs glued over their entire surface and their grooves intersecting, and on the other hand: a third corrugated board 3, which is also, although not inevitably, diameter D and cut into a star shape 3 which is smaller than D and corresponds to the diameter of the current hub 6. The notches define a plurality of radial tongues 5 distributed over the entire circumference of the disc 3.

5 Disc 3 is glued on the combination of disc 1 + disc 2 from the center to diameter d. The tabs 5 are then raised and folded at a 90 ° angle to the plane of the discs to form a central half 6 (A or B), the shape of which is shown in the lower part of Figure 1 (sectioned) and in Figure 2 (perspective).

Each flange 7A, 7B thus obtained (rails 1 + 2 + 3, tabs 5 raised) is provided with a number of holes 8 (e.g. 4 holes in Figure 2), preferably 15 reinforced with plastic or metal rings through which tie straps or straps can be threaded. , and a central opening 9 through which the shaft of the long product unfolding apparatus is inserted.

20 The drum is therefore operated as follows:

The long product roll 10 is placed on its flap on a table or any flat surface. The upper flange 7A, to which the raised tabs 5 may be secured by the surrounding ____ tape 11, is inserted into the coil. The assembly .- • -25 is turned 180 ° and the second flange 7B is put in place in the same way. The combination of flanges is thus automatically adjusted to the thickness of the coil. Two straps 12 with steel straps or possibly fiber-reinforced plastic tape ensure that the joint of the two flanges and the assembly 30 remain together, which then looks like that shown in Figure 3.

. ·. ; There may be several variations of this embodiment of the invention: For example, both discs 1 and 2, which form both. The base of the 35 mang flange may be replaced by a single disc if corrugated board with sufficient mechanical strength (so-called "triple-grooved" board) is available 4 85969 or reinforced differently or with a higher basis weight.

The disc 3 from which the tongues 5 are formed may be smaller or larger in diameter than D, depending on the height of the coil to be packed.

The choice of corrugated grades also depends on the products to be packaged, which can range from plastic pipe to copper pipe 10 or aluminum wire or electrical wires or cables to name just a few examples.

The invention has been applied to the packaging of A.C.R. copper tube coils having an outer diameter of the order of 5-25 15 mm with a length of the order of 500-2000 m and a weight of 50-150 kg.

For coils of this type, the discs have a diameter D of the order of 950-1100 mm and a diameter d of the order of 20 550-650 mm, which discs are adjustable for coils wound on a transverse feeder at a height of 20-35 cm.

This type of drum, which is assembled at the time of use, with ____ initially flat - and thus space-saving - -.- 25 corrugated boards offers the following advantages: the drum does not have a fixed-height inner center; adjustable to the height of an arbitrary coil within a wide range of 15 cm; 30 is suitable for a wide range of long plastic, metal or miscellaneous products (for example, electric wires and cables); is capable of receiving coils with end surfaces secured. sin roughly parallel; the contact between the flanges and the end surfaces of the coil is good, 35 which ensures good flatness during storage and reduces: · the risk of entanglement when developing open; significantly reduces transportation costs from the cardboard manufacturer to the mill.

Claims (3)

5 85969 A cardboard drum for transporting and unloading coils of long products, consisting of two staples (7A and 7B), which in turn consist of at least 5 one first cardboard sheets (1) with an outer diameter D, on which a second cardboard sheet (3) with notches so as to form a tongue assembly (5) which, after being folded 90 ° to the plane of the plate, forms members of a hemisphere with a diameter d, characterized in that in the second plate (3) to form said drum of said small brackets before folding there are notches along the entire circumference up to diameter d, which form a tongue assembly which, after folding, form a half-center, and that the two half-centers are connected by tightening them together by means of fastening means so that the drum thickness is automatically adjusted according to the thickness of the coils. Drum according to Claim 1, characterized in that each bracket is formed by joining two sheets (1 and 2) of corrugated board which are joined by gluing and a third notched sheet (3) which is glued to the whole of the sheet (1 and 2) from the center to .25 d. Drum according to Claim 1 or 2, characterized in that it has a central opening (9) for the passage of the discharge center and a plurality of holes (8) for the passage of the tensioning straps of the coils. 6 85969