Not applicable.
The present invention relates generally to packaging and methods for the shipping of wire, and more particularly to spools wound with welding wire electrodes.
In recent times, a substantial industry has been developed around providing coils of electric welding wire in square cardboard boxes. This is because welding has become a dominant process in fabricating industrial and commercial products. Applications for welding are wide spread and used throughout the world. Examples include the construction of ships, buildings, vehicles and pipe lines. Welding is also used in repairing or modifying existing products. Among the various methods of joining metal components, arc welding is one well known and very common process.
Arc welding may employ consumable welding wire, which in some instances may be wound on a spool for ease of dispensing. For purposes of protection during storage and shipping, such spools may be placed in cardboard cartons. Conventional cardboard boxes have been modified by a variety of structural elements in an effort to solve the many and diverse problems experienced by use of these boxes. While such cartons have provided sufficient protection during bulk shipment of spooled electrodes to distributors, the market for direct-to-consumer shipping requires additional safeguards for spools.
The following presents a simplified summary of the invention in order to provide a basic understanding of some example aspects of the invention. This summary is not an extensive overview of the invention. Moreover, this summary is not intended to identify critical elements of the invention nor delineate the scope of the invention. The sole purpose of the summary is to present some concepts of the invention in simplified form as a prelude to the more detailed description that is presented later.
In accordance with one aspect of the present invention, a container for packaging a welding wire comprise a box comprising opposed first and second face panels that are separated by four vertical side walls and four vertically extending corners. At least one aperture is provided on the first and second face panels, and is located at one of the four vertically extending corners and is defined by a frangible connection on one of the first and second face panels so that an interior of the box is initially inaccessible. At least one corner reinforcing element comprises a main body and an abutment member. The main body comprises a terminal end, and the abutment member comprises an outer profile that corresponds to a spool containing a coil of welding wire located within said box. The at least one corner reinforcing element penetrates into the interior of the box via the at least one aperture at one of the vertically extending corners after said frangible connection of the at least one aperture is breached. The at least one corner reinforcing element engages an outer perimeter rim of said spool containing a coil of welding wire located within said box.
In accordance with another aspect of the present invention, a container for packaging a welding wire comprises a box comprising opposed first and second face panels that are separated by four vertical side walls and four vertically extending corners, each defining an apex. A plurality of generally triangular apertures are provided on the first and second face panels with at least one located at each of the four vertically extending corners. Each triangular aperture is defined by a frangible connection on one of the first and second face panels so that an interior of the box is initially inaccessible. A plurality of generally triangular corner reinforcing elements are provided that penetrate into the interior of the box via the triangular apertures after said frangible connection of each triangular aperture is breached. The plurality of corner reinforcing elements comprise a main body and an abutment member. The main body comprising a terminal end that includes a projection adjacent to a recess, and the abutment member comprising a curved profile that corresponds to a spool containing a coil of welding wire located within said box. The projection and recess on the main body of a first corner reinforcing element that extends through one triangular aperture of the first face panel is arranged to lockingly engage with the corresponding projection and recess of a second corner reinforcing element that extends through a corresponding triangular aperture of the second face panel.
It is to be understood that both the foregoing general description and the following detailed description present example and explanatory embodiments of the invention, and are intended to provide an overview or framework for understanding the nature and character of the invention as it is claimed. The accompanying drawings are included to provide a further understanding of the invention and are incorporated into and constitute a part of this specification. The drawings illustrate various example embodiments of the invention, and together with the description, serve to explain the principles and operations of the invention.
The foregoing and other aspects of the present invention will become apparent to those skilled in the art to which the present invention relates upon reading the following description with reference to the accompanying drawings, in which:
Example embodiments that incorporate one or more aspects of the present invention are described and illustrated in the drawings. These illustrated examples are not intended to be a limitation on the present invention. For example, one or more aspects of the present invention can be utilized in other embodiments and even other types of devices. Moreover, certain terminology is used herein for convenience only and is not to be taken as a limitation on the present invention. Still further, in the drawings, the same reference numerals are employed for designating the same elements.
It is common for manufacturers to provide coils of consumable welding wire electrodes in square cardboard boxes. However, round wire spools that are packaged in a square carton provide little protection to the edges and faces of the spool during the shipping process. Typical handling by common shipping carriers (i.e., UPS/FedEx) in the package shipping environments (as represented by ISTA-3A testing protocols) can damage the spool and thereby render the spool unable to dispense the welding wire after shipment. For example, the carton wall provides little protection of the spool faces in flat drops, and the round spool face edge has limited contact with the straight carton edge allowing it to easily lance through the carton wall on edge drops. Further, the empty corners of the carton provide only token resistance to crushing in corner drops. Conventionally, the prior art required the spool to be removed from its original labelled carton packaging to be properly packaged for the tougher common shipping carrier environment. Additionally, the prior art required a pre-glued assembly of the overpack components.
In short summary, the structure and method described in the instant application allows the spool to remain in its original labelled carton, but provides access to the corner voids of the carton for the insertion of void-filling cushion components. The inserted elements provide structural strength to the empty corners of the carton in corner drops.
The structure and method used to accomplish the foregoing can have various embodiments. In one example, a conventional spool carton can have nicked, die-cut or score-line features (i.e., a perforation or kiss-cut) that can later be punched inward to create openings in the corners of the carton for insertion of support components that upgrade the structural strength of the package for shipping via common shipping carriers. The result is the formation of an integrated cradle that provides location and cushioning to the spool without having to remove the spool from its original carton packaging, as well as adding structural strength to the previously-empty corners of the carton. After the void filling elements are inserted, a set of foam corner blocks and a corrugate overpack may be used to complete the package. The package may further include a facer plate on each flat face of the original carton to keep the flange faces supported flat in corner drops.
Turning to the shown example of
The container 10 further comprises a plurality of apertures 30, 32 on the first and second face panels 14, 16 (respectively), with at least one aperture 30, 32 located at each of the four vertically extending corners 19. For the sake of clarity, only the apertures 30 on the first face panel 14 will be described in detail, with the understanding that the apertures 32 on the second face panel 16 can be similar, or even different. Moreover, although the apertures 30 on the first face panel 14 are shown as identical, it is understood that multiple different apertures can be used. Each aperture 30 is bounded on two sides 34, 36 by adjacent side walls of the box (in
Although ultimately the apertures 30 will provide access into an interior of the box, each aperture is initially closed-off and defined by a frangible connection on one of the first and second face panels 14, 16 so that an interior of the box is initially inaccessible. The frangible connection of each aperture 30 comprises at least two non-frangible sides that are secured to one of the face panels or vertical side walls to form a pivotable flap once the frangible connection is breached. In the shown example, the two sides 34, 36 are non-frangible to later provide the pivotable flap(s).
Turning to
As shown in
The frangible connection of each aperture 30 may also comprise an at least partial secondary die-cut or score-line 42 extending to the apex 21 of the associated corner 19 to thereby separate the pivotable flap into a pair of independent pivotable flaps 44, 46. As before, the secondary die-cut or score-line 42 can be a through-cut, a kiss-cut, or a perforated cut, and may be continuous or dis-continuous. The secondary die-cut or score-line 42 can extend completely between the apex 21 of the corner 19 and up to the die-cut or score-line 40 to thereby bifurcate the flap into the pair of independent pivotable flaps 44, 46. In this case, each flap 44, 46 is pivotable into the interior of the container along a respective side 34, 36. As shown in
Turning now to
Each corner reinforcing element 50 includes a main body 52 and an abutment member 54, and can have various geometries. For example, as shown, the corner reinforcing elements 50 can have three sides arranged in a generally triangular geometry. It is further contemplated that both of the apertures 30 and the corner reinforcing elements 50 will have a complementary geometry. Thus, the two outer sides 51, 53 may correspond to the two sides 34, 36 of the aperture 30 adjacent to the apex 21 of each associated corner 19, while the inner, third side 55 may correspond to the frangible side 40. These sides 51, 53, 55 can form a perimeter corresponding to the geometry of an associated aperture 30. Still, it is understood that various other geometries are contemplated, such as square, rectangle, quadrilateral, polygonal, random, etc.
Additionally, a flange 57 can extend at least partially about the perimeter to abut one of the first and second face panels 14, 16 to accurately position and retain the assembled inserts vertically relative to the spool. The flange 57 also traps the face of the carton after the frangible connections are breached. Further, the flange 57 can also limit an insertion depth of the main body within the box. Preferably, the flange 57 is located at an upper end or surface of the corner reinforcing element 50 and at least partially along each side 51, 53, 55. The flange 57 may be substantially continuous about the perimeter of the corner reinforcing element 50, although it may also be discontinuous. Thus, a corner reinforcing element 50 can be inserted into an aperture 30 until the flange 57 at the upper end contacts the edge of the face panel 14, 16 and/or the side walls 18-24.
The main body 52 extends outwardly from an upper surface to extend through an aperture 30 of the first or second face panel 14, 16, and includes a terminal end 56 with a projection 58 adjacent to a recess 59. The main body 52 preferably has a length of about one-half of a vertically extending corner of the container 10, so that a unitary vertical support is formed between the first and second face panels 14, 16 when the first corner reinforcing element is engaged with the second corner reinforcing element. For example, on an example corner of the container 10 shown in
The terminal end of the main body of a first corner reinforcing element is arranged to contact the terminal end of the main body of a second corner reinforcing element. Preferably, these terminal ends will lockingly engage each other. In one example, the projection 58 and recess 59 on the terminal end 56 of the main body 52 are arranged to lockingly engage with the corresponding projection and recess of a second corner reinforcing element. Such a locking connection between the corner reinforcing elements 50 of a single corner 19 can greatly enhance the force loading and force transfer capabilities to thereby provide increased strength at the corners of the container 10. Additionally, the locking connection may help to retain the corner reinforcing elements 50 in place during transportation to inhibit accidental dislodgment. That is, keeping with the example shown in
Each corner reinforcing element 50 further includes an abutment member 54 to contact the outer perimeter rim 48 of the spool 12. The abutment member 54 includes a profile that corresponds to, and is preferably complementary to, an outer perimeter rim 48 of a spool 12 containing a coil of welding wire located within the box. In the shown example, the abutment member 54 includes a curved or angled profile that has a radius substantially the same as that of the outer perimeter rim 48 of the spool 12. In another example, the abutment member 54 may include a curved or angled profile that has a radius slightly less than that of the outer perimeter rim 48 of the spool 12 so as to apply a resilient force upon the spool 12. Such a force, when applied by one or more corner reinforcing elements 50, can help to maintain the spool 12 in the center of the container 10. Still, other profiles are contemplated.
Additionally, the abutment member 54 may include a curved or angled recess 60 (see
Further, the abutment member 54 may include at least one projection 62 adjacent to and spaced a distance from the flange 57 of the corner reinforcing element 50. Preferably, two or more separate projections 62 are provided. The distance between the flange 57 and an end of the projection 62 is sized to resiliently capture and retain the outer perimeter rim 48 of the spool 12 within the container 10. In one example, the distance between the flange 57 and an end of the projection 62 is at least equal to the thickness of the corresponding first or second face panel 14, 16 and the thickness of the outer perimeter rim 48 of the spool 12. Preferably, the distance is slightly less than this amount so as to provide a resilient capture force upon the spool 12. Further, each projection 62 may further include a ramped geometry. For example, as shown in
Each corner reinforcing element 50 is preferably formed as a monolithic body, such as by a single plastic mold or the like. This type of construction simplifies manufacturing and increases durability. Still, it is contemplated that each corner reinforcing element 50 can be formed from multiple parts that are secured together to create a unitary body. Furthermore, the upper end or surface of the corner reinforcing element 50 containing the flange 57 may be open or closed. In either event, it can be beneficial for the interior 64 of the corner reinforcing element 50 to be substantially hollow to thereby reduce the amount of material required to manufacture, as well as provide spacing for an impact “crush zone.” Thus, if the container 10 is accidentally dropped, the resulting force impact that may occur on a corner 19 of the container 10 may be at least partially absorbed by a deformation of the impact “crush zone.” In a similar manner, the main body 52 can be spaced a distance apart from the abutment member 54 and outer rim 48 of the spool 12 to provide a similar crush zone effect, whereby a corner impact force may deform the main body 52 inwards and towards the abutment member 54. Although the interior is substantially hollow, one or more reinforcing ribs or other structural members may be provided. In one example, the hollow interior 64 can be bounded by a connecting wall 66. The connecting wall 66 can be arranged generally perpendicular to the side walls 18-24 of the container 10 so as to provide a strong structural support against side impact forces. The connecting wall 66 may also provide a connection between the main body 52 and the abutment member 54. In one complete example, each corner reinforcing element is formed as a monolithic body with a substantially hollow interior that is bounded by a connecting wall that connects the main body to the abutment member.
Turning now to
Preferably, the container is formed from corrugated cardboard material and the corner reinforcing elements are formed from a plastic material (or even a strengthened paperboard material). After the container is used, all parts of the box can be recycled. Still, other materials are contemplated.
The invention has been described with reference to the example embodiments described above. Modifications and alterations will occur to others upon a reading and understanding of this specification. Examples embodiments incorporating one or more aspects of the invention are intended to include all such modifications and alterations insofar as they come within the scope of the appended claims.
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Number | Date | Country | |
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20160200497 A1 | Jul 2016 | US |