MXPA99011795A - Cardboard box for containing and dispensing wire - Google Patents

Abstract

The cardboard box for containing and dispensing large quantities of wire, especially metal wire for welding, comprises a cubic external container (1) with an open top side, an octagonal-base internal container (2), fitting snugly into the external container (1) and being destined to contain a coil of wire (3), and a bag-type wrapper (4) made of a flexible airtight material, which is interposed between the external and the internal containers so as completely to cover the internal container (2) and able to be closed and sealed there-upon.

Description

CARTON CONTAINER FOR CONTAINING AND DISCOVERING LARGE AMOUNTS OF WIRE FIELD OF THE INVENTION The present invention relates to a cardboard container for containing and unwinding large quantities of wire. In particular it relates to containers intended to contain skeins constituted by a large quantity of metallic thread, in particular for welding, of the general weight varying from 50 to 400 kg.

BACKGROUND OF THE INVENTION The adoption of such large skeins allows the continuous operation, for long periods, of the automatic welding machines for which the wire is intended. The functions, the way of introduction and unfolding of the wire, the movement and the type of solicitations to which such containers are subjected, make their project decidedly specific and specific, and the relative problems to be solved very different from those related to the common packing containers. First of all the wire, continuous, is deposited inside the container so that it can be removed by the user without tangles; to solve this problem, special wire insertion geometries (which do not affect the present invention using introduction systems of the known type) are known apart from core cores of the container that prevent movement of the skein during transport. The introduction of the wire into the container is carried out on special machines equipped with platforms on which the empty container is supported and from which the filled container is extracted by machines (due to its weight). The container, therefore, must be easy to maneuver, both empty and full. The container must be sufficiently robust to withstand both lateral stresses, which could cause unacceptable deformations of the shape of the container itself and of the skein contained therein, as well as axial stresses in order to allow the stacking of the various containers without causing crushing. These solicitations can also be of notable intensity; Think only of the movements of the containers either in the establishment of the wire manufacturer, either during loading - unloading and transport (which occurs on a truck, by rail and, for long journeys, by sea), either in the establishment of the user. In addition, the container must be configured so as not to create obstacles for the development of the wire. Empty, before filling, the container should be as bulky as possible for obvious reasons of transport and storage. Once the wire is used and emptied, the container is usually not recovered; therefore, it is clear that the container must be inexpensive and removable without excessive problems. A first known type of containers of this kind is represented by a cylindrical container (practically a piece of tube) which is provided with generally foreseen bases of metal rings to reinforce the same container; These containers are sometimes equipped with handles, metal or other material. These containers are made of a very resistant but expensive material; In addition, these containers must be disposed of selectively and have the same volume empty as full. Containers have been proposed, generally prismatic, made by folding cardboard punches. These containers are inexpensive, and therefore can be destroyed by the user without excessive costs or problems, but have significant resistance limits which are generally not appreciated by the manufacturer, due to movement problems, or by the user of the product. wire that often receives them deformed and, consequently, with difficult wire use. In addition, there is a problem, related to the possible corrosion of the wire that is verified, especially during transport by sea that can last several weeks or months, which has not been resolved by any of the currently known containers.

SUMMARY OF THE INVENTION The object of the present invention is that of supplying a container that eliminates all the drawbacks described above. Another object of the present invention is that of supplying a container of reducible volume in vacuum, which is easy and quick to assemble and which, once used, can be eliminated without problems. An advantage of the present invention is that of supplying a container that prevents corrosion of the wire contained therein, even in the case of prolonged residence in corrosive environments, which is the marine environment. A further advantage of the present invention is that of supplying a container that allows to make very stable pallets of a large number of such containers. Such objects and advantages and even others are achieved in their entirety by the invention is a matter as it is characterized by the claims that lie ahead.

BRIEF DESCRIPTION OF THE FIGURES Other characteristics and advantages of the invention will become even more apparent from the detailed description that follows of preferred, but not exclusive, embodiments of the invention, illustrated purely as an exemplifying and non-limiting example, in the attached drawings, in which: - Figure 1 shows a perspective view, with some parts removed to better show others, of the container in question not closed; Figure 2 shows a section in vertical elevation of the container in question with the sealed envelope; - Figure 3 shows a top view of the container in question with some parts removed to better highlight others. The container in question comprises an external container (1) of prismatic shape with a square base and which can be opened on the upper base. Substantially the outer container is a common "box" with square base with side skirts (1a) that enclosing constitute either the upper base, or the lower base; the side skirts are, as is usually the case in these containers, superimposable in order to obtain the upper and lower double layer base. The container (1) is achieved by folding a sheet of pre-folded cardboard through which is obtained, with a splice on an edge (for example by metal staples) the side surface of the container, and with the fold of the various side skirts, spliced between if (for example by means of adhesive tape) both the lower base and, during the closure of the container, the upper base. The container comprises a base platform (6) in whose base plane the lower base of the external container is solidly anchored; such a connection is made, once the lower base of the container is formed, for example by means of metal clips that connect the skirts of the container to the base plane of the bench. The bench is generally made of wood and comprises two lower support sleepers (6a) which are arranged parallel and, for reasons that will be illustrated below, with a small concavity with respect to two parallel sides of the base plane of the bench. The container in question also comprises an internal container (2) having a prismatic shape of octagonal base and dimensions such that its base is inscribed in the base square of the outer container; accordingly, substantially such a container is custom fitted into the container (1); the container (2) has approximately the same height as the external container, is open in the upper base (practically does not have upper base) and is intended to contain a skein of wire (3). The side surface of the second container is achieved by folding a pre-folded sheet of cardboard. In a possible embodiment of the container, the lower base (2a) of the inner container is an octagonal flat element that is introduced to measure within the internal container (2); on this base (2a) an internal nucleus (2b) is coaxially connected, open at the top and achieved by folding a punched cardboard that is provided with appendages that are inserted into special holes obtained in the base (2a). The inner core, of a height lower than the containers so as not to hinder the movement of the wire, can be conveniently provided with longitudinal inspection grooves (2c) that allow visually controlling, from the inside, the state of the wire skein contained in the recipient. On the base (2a) a hook (7) can also be coaxially connected to which, by means of an elastic (9), a transverse fixing element (10) is connected, constituted by a wooden rod or preferably by a folded shape of paperboard. The upper edge of the inner core is usually provided with a smooth lining that favors the movement of the wire. As an alternative the lug (7), with advantages both for the simplicity of manufacture and for the disposal of the used container, below the base (2a), which may or may not have the core (2b) and which is provided with a hole central, a stop is provided, constituted for example by a flat or elongated element that does not pass through the hole, on which the elastic (9) that comes out of the upper part of the central hole is inserted. The elastic, as in the previous case and with the same functions, is connected to the fixing element (10). In any case, the lower base of the inner container may even be missing, which in this way only consists of the lateral surface; in this case the hook (7) can be directly joined to the base bench (6). These last solutions are not illustrated by the fact that they are easy to understand.

In the spaces that are created, in correspondence of the edges of the external container, between the internal container and the external container there are provided four prisms of triangular base (5), made with a punching of folded cardboard, which have approximately the same height of the external container and are introduced, during the realization of the container, between the internal container and the external container. The container, finally, comprises a forged wrapper (4) type bag, made of flexible material and can not be traversed by air, which is placed between the external container and the internal container and way of wrapping the latter; The open end of the wrapper leaves the top of the outer container and is sealed once the wire has been inserted into the container. For the step of unfolding the wire from the container, the use of a lid (8) (commonly called bell), made of transparent plastic material, is provided, which is provided with a base (8a) of square section, open downwards and of such dimensions to be placed on the container, that in the upper part of it has an upper area (8b) shaped like a truncated cone which, in turn, is provided with an upper hole (8c) for the exit of the wire a lateral opening (8d) that allows access inside the lid. This cover is supplied to the user and can be reused for different containers.

The container described is extremely simple and inexpensive to realize, since the component parts are all made of economical materials (common cardboard for packaging, plastic material, belonging to the packaging, and wood of low value for the bench), transportable in a way flat and assemblable directly at the headquarters of the wire manufacturer. For the realization of the container first of all is formed, with simple folds and staples, the external container (1) which is then stapled on the bench (6); then, in the same way, the lateral surface of the internal container (2) that is introduced in the wrapper (4) is also introduced, together with the internal container, into the external container. Unlike happens for the outer container, the edges of the cardboard that defines the external surface of the inner container can preferably be spliced by means of a sheet of adhesive paper, thus avoiding the overlap of the edges, necessary for the stapling, which could create some difficulty of introducing the internal container in that external one. In the case of the internal container with base and inner core, the core is formed and subsequently joined to the octagonal base. The hook (7), or the stop to which the elastic (9) is already spliced which leaves the hole of the base (2a), is connected to the octagonal base. The assembly obtained in this way is simply inserted into the internal container (2).

In the case of the internal container without base, the hook (7), which in this case is provided with a self-tensioning spigot, can simply be connected to the bench (6). Then, the four prisms (5) that are introduced in the spaces for this purpose are obtained by means of folds of the corresponding cartons. Therefore, as can be seen, the manufacture of the container can be carried out directly in the establishment of the wire manufacturer since it is extremely simple and fast. The container thus formed is arranged on corresponding machines that effect the introduction of the inner wire. In this step, the upper lateral skirts of the outer container are folded out (see the figures) so as not to hinder the introduction of the wire; the wrapper (4) can conveniently be folded over the skirts to hold them in place. Once the introduction of the wire is finished, a brake element (12) is supported on the skein of wire, schematically illustrated in the figures and, ever it may be, of the known type, whose functions are those of favoring the correct unfolding of the wire . On the skein then the fixing element (10) is supported and fixed, by means of the elastic (9), to the hook (7) or to the stop, which holds it downwards. Since the functions of the central core are only those of preventing possible movements of the skein, the same nucleus, as already mentioned, may not exist; in this case the transverse fixing element (10) could be provided with a cylindrical protrusion, to be introduced by a depth established in advance within the skein, which is removed next to the transverse fastening element, with notable advantages, at the moment of unwinding of the wire. Once the introduction of the wire is completed, the wrapper (4) is folded over the inner container and closed by thermal welding, glueing or other analogous system, after suction of the air inside; in such a way the wire is in a "vacuum" environment with obvious advantages for the purposes of its protection against corrosion. Then the side skirts are folded, which are then closed, for example, by impregnated rubber paper. After the above, the container is ready for shipment. Once reached the destination, the container is opened, the fixing element is removed and, in the folded-out skirts, the lid (8) that favors the unfolding of the wire is introduced. Once the operation is finished, the container can be destroyed with great ease. One of the particularities of the container in question is represented by the presence and by the location of the wrapper (4) which, being between the external and internal container, is not subject to possible lacerations during transport, does not impede the introduction operations and development of the wire and allows to protect the internal container, and especially the skein of wire contained therein, against atmospheric agents mainly in the frequent case of sea transport. Another particularity of the container in question is represented by the special configuration of the bench (6) that, thanks to the presence of the small concavities of the sleepers (6a) with respect to the sides of the base plane of the bench that define points of intake easily accessible, allows the movement of the container, not only with the common forks used for the movement of the pallets, but also with simple slingings moved by a bridge car, much more versatile and simple, whose strings find easy and safe to hook in the points of takes defined by the concavities of the sleepers. Note that such a bench configuration could also be used on vessels made differently from that indicated above. Finally, it is pointed out that the container in question, thanks to its configuration of "double container" presents a remarkable resistance, rigidity and protection for the skein of wire; in addition, thanks to the presence of the prisms of triangular base (5), a remarkable resistance of the container to compression is obtained. All the above is achieved by making the container with materials called "" obres "" therefore extremely economical, and easily recyclable.

Claims (10)

NOVELTY OF THE INVENTION R E I V I N D I C A C I O N S

1. - Cardboard container for containing and unwinding large quantities of wire, further characterized by the fact that: it comprises an external container (1), prismatic with a square base and that can be opened in the upper base; it comprises an internal container (2) having a prismatic shape of octagonal base and dimensions such that its base is inscribed in the base square of the outer container, has approximately the same height as the outer container, is open on the upper base and is intended to contain a skein of wire (3).

2 - Container according to claim 1, further characterized by the fact that comprises a casing (4) forged case type, flexible material and can not be traversed by air so as to maintain a vacuum inside it , which is placed between the outer container and the inner container so as to wrap the latter and presents its open end that leaves the upper part of the outer container.

3. Container according to claim 1, further characterized by the fact that comprises four prisms of triangular base (5), made with a punching of folded cardboard, which have approximately the same height of the outer container and are inserted between the container internal and the external container in the empty spaces created, in correspondence of the edges of the external container, by means of the coupling between the external container and the internal container.

4. Container according to claim 1, further characterized by the fact that comprises a base bed (6), which is fixed to the joint solidly tailored external container, comprising two lower support sleepers (6a) arranged in a parallel manner and with a small concavity with respect to two parallel sides of the bench (6).

5. Container according to claim 1, further characterized by the fact that: the lower base (2a) of the inner container is a flat octagonal element that is introduced to measure within the internal container (2); on said base (2a) an inner core is coaxially connected, open in its upper part and obtained by the folding of a punched cardboard; on said base (2a) a hook (7) is coaxially connected.

6. Container according to claim 1, further characterized by the fact that: the lower base (2a) of the inner container is a flat octagonal element that is introduced to measure within the internal container (2); under said base (2a), provided with a central hole, a stop is provided on which an elastic (9) is inserted that leaves the top of said central hole.

7. - Container according to claim 1, further characterized by the fact that the internal container does not have any of the two bases.

8. Container according to claim 1, further characterized in that it comprises a cover (8) of transparent plastic material, to be introduced into the container during the development of the wire, which is provided with a base (8a) section square, open downwards and of such dimensions as to be placed on the container, which presents in its upper part an upper area (8b) shaped like a truncated cone which, in turn, is provided with an upper outlet hole (8c) of the wire and a lateral opening (8d) that allows access inside the lid.

9. Container according to claim 2, further characterized by the fact that: comprises four prisms of triangular base (5), made with a punching of folded cardboard, which have approximately the same height of the outer container and are inserted between the internal container and the external container in the empty spaces created, in correspondence of the edges of the external container, by the coupling between the external container and the internal container; It comprises a base platform (6), to which the base of the outer container is solidly fixed to measure, which, in turn, comprises two lower support crosspieces (6a) arranged in a parallel manner and with a small concavity with respect to two parallel sides of the bench (6).

10. - Container for containing and unwinding large quantities of wire, further characterized by the fact that it comprises a base bench (6), in whose base plane the base of the container is fixed, comprising two lower support sleepers (6a) arranged way parallel and with a small concavity with respect to two parallel sides of the base plane of the bench (6) that define easy access points.