Demountable reel with blocking device
Demountable reel with blocking device, the reel comprising a central cylindrical body and two discs with a larger diameter on the ends of the central body, the ends of the latter having transversal flanges, while each disc has a annular groove with pairs of coupling sections, each one having an entry section and a retaining section, the reel having in the coupling of each disc to the central body at least one blocking device with a blocking body with a fixing section and a blocking extension, said blocking body being adapted to move and couple onto one of the discs in a corresponding housing, in such a way that the blocking extension is positioned transversally in one of the entry sections of the annular groove of the disc, restricting the turning movement of the central body with respect to the disc and consequently preventing the central body from being separated from the disc.
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The object of the invention is a demountable reel with blocking device, of the type comprising a central hollow cylindrical body and two discs with a larger diameter on the ends of the central cylindrical body used, in particular, for winding a strip of staples of the type used for sealing sausages.
BACKGROUND OF THE INVENTIONEmbodiments of demountable reels of the abovementioned type are known to be used for winding a strip of staples for sealing sausages. Patent document ES 200300362 for a “Demountable Reel” by the same applicant, describes a demountable reel made up by a central hollow cylindrical body, formed by two identical semi-cylindrical halves joined together, and by two essentially flat discs on the bases of the central body; the cylindrical halves have flanges on their ends which projects transversally, while each disc has on its inner surface a annular groove adapted to receive the flanges of one of the ends of the central body, all this being adapted in such a way that the central body remains fixed to each disc by a wedge effect produced by the coupling of the flanges to the annular groove.
In tests carried out by the inventor, there is particular relevance for the need to ensure that the discs cannot be separated accidentally from the central body of the reel, in certain working conditions.
EXPLANATION OF THE INVENTIONThe demountable reel with blocking device being the object of the invention, comprises a central hollow cylindrical body and two essentially flat discs with a larger diameter and with central openings in the ends of the central hollow cylindrical body, the ends of the central body having transversal flanges, while each disc has a annular groove with pairs of coupling sections positioned successively, there being no fewer than the number of flanges, each pair of coupling sections having an entry section, adapted to hold the flange inside the annular groove, all this so that the movement of the flanges from the entry section to the retaining section, or vice-versa, is done by turning the central body with respect to the disc.
The demountable reel being the object of the invention is characterized in that the coupling of each disc to the central body comprises at least one blocking device with a blocking body made up by a single part with a fixing section and a blocking extension, said blocking body being adapted to be removably coupled onto one of the discs in a corresponding housing made so that when the central body is coupled to a disc, in a position in which the flanges of the central body occupy the retaining sections of the annular groove of the disc, a blocking body can be inserted in the corresponding housing of the disc, in such a way that the blocking extension of the blocking body is positioned transversally in one of the entry sections of the annular groove of the disc, restricting the turning movement of the central body with respect to the disc and consequently preventing the central body from being separated from the disc, unless the blocking device is removed.
Another characteristic of the demountable reel of the invention is that the housing used in each disc to receive a blocking body is made in such a way that, once inserted in the housing, the blocking body remains there without protruding from the surface of the inner face of the disc.
According to another characteristic of the invention, the housing used in each disc comprises a through hole, adapted to receive the fixing section of the blocking body, which has means of fixing by pressing in the through hole, said fixing section being accessible from the outer surface of the disc to facilitate the removal of the blocking body by exerting pressure from the outer surface of the disc onto the fixing section.
According to another particular feature of the invention, each retaining section of the annular groove is restricted, at its end opposite to that of the entry section, by a fixed stop, which forms part of the disc.
According to another aspect of the invention, the fixed stop that restricts the annular groove in its end opposite to the entry section, is made up by a gradual narrowing of said groove.
BRIEF DESCRIPTION OF THE DRAWINGSThe attached drawings illustrate a non-restrictive example of a form of embodiment of the demountable reel with blocking device being the object of the invention. In said drawings:
In
In
Each semi-cylindrical half 5 has on each of its bases a transversal flange 8 which is centred and which projects outwards transversally, and two half transversal flanges 8, indicated as 8′ in
In
Naturally, instead of having a concentric annular groove 10, each disc may have as many grooves, in a circumference arc, as there are transversal flanges 8 on each central body 2. This variation is, therefore, considered completely interchangeable as it does not affect the essential features of the invention.
The blocking device 4, which is on the reel of the invention, comprises two identical blocking bodies 14 which can be coupled to respective discs 3 by means of corresponding housings 15 on the inner surface 9 of the discs 3, as can be seen in
Each blocking body 14 has an essentially elongated prismatic form and, longitudinally, has a blocking extension 16 and, transversally, a fixing section 17. Each housing 15 is made to receive a blocking body 14 so that, as represented in
Assembly of the demountable reel with blocking device 1 of the invention is very simple and can be summarized as follows. First, the two semi-cylindrical halves 5 are coupled in the way already explained to form the central body 2 of the demountable reel with blocking device 1; next, the central body 2 is coupled to the discs 3, also as already explained; and lastly, each blocking body 14 is positioned in a respective housing 15 of the discs 3, the blocking extensions 16 being positioned in corresponding entry sections 11. In these conditions, the retaining projections 13 of the retaining sections 12 and the blocking extensions 16 of the blocking bodies 14 serve as follows: the first prevent the central body 2 from separating from the discs 3 in the direction determined by the longitudinal axis of the central body 2; and the second prevent the central body 2 from turning with respect to the discs 3, thereby preventing the transversal flanges 8 from moving to the entry sections 11 and consequently preventing the central body 2 from separating from the discs 3.
In order to disassemble the demountable reel with blocking device 1 of the invention, all that is required is, first, to remove the blocking bodies 14 from the housings 15, the through hole 18 of each housing 15 facilitating this operation considerably, either directly with the thumb or using an everyday tool or any other suitable element, such as a bradawl, for example, simply by pushing the fixed section 17 in order to remove the blocking body 14; then, the central body 2 is separated from the discs 3, by turning the central body 2 with respect to the discs 3 in opposite directions to those used to assemble the reel.
Claims
1.- Demountable reel with blocking device (1), the reel comprising a central hollow cylindrical body (2) and two essentially flat discs (3) with a larger diameter and with central openings in the ends of the central body, the ends of the latter having transversal flanges (8), while each disc has a annular groove (10) with pairs of coupling sections positioned successively, there being no fewer than the number of flanges, each pair of coupling sections having an entry section (11), adapted for insertion and/or removal of the flanges from the annular groove, and a retaining section (12), adapted to hold the flange inside the annular groove, all this so that the movement of the flanges from the entry section to the retaining section, or vice-versa, is done by turning the central body with respect to the disc, characterized in that the coupling of each disc to the central body comprises at least one blocking device (4) with a blocking body (14) made up by a single part with a fixing section (17) and a blocking extension (16), said blocking body being adapted to move and couple onto one of the discs in a corresponding housing (15) used in the same way so that, when the central body is coupled to a disc, in a position in which the flanges of the central body occupy the retaining sections of the annular groove of the disc, a blocking body can be inserted in the corresponding housing of the disc, in such a way that the blocking extension of the blocking body is positioned transversally in one of the entry sections of the annular groove of the disc, restricting the turning movement of the central body with respect to the disc and consequently preventing the central body from being separated from the disc, unless the blocking device is removed.
2.- Blocking device according to claim 1, characterized in that the housing (15) used in each disc (3) to receive a blocking body (14) is made in such a way that, once inserted in the housing, the blocking body remains there without protruding from the surface of the inner face of the disc.
3.- Blocking device according to claim 2, characterized in that the housing (15) used in each disc (3) comprises a through hole (18), adapted to receive the fixing section (17) of the blocking body (14), which has means of fixing by pressing in the through hole, said fixing section being accessible from the outer surface of the disc to facilitate the removal of the blocking body by exerting pressure from the outer surface of the disc onto the fixing section.
4.- Device according to claim 1, characterized in that each retaining section (12) of the annular groove (10) is restricted at its end opposite to that of the entry section (11), by a fixed stop, which forms part of the disc (3).
5.- Device according to claim 4, characterized in that the fixed stop that restricts the annular groove by its end opposite to the entry section, is made up by a gradual narrowing of said groove.
Type: Application
Filed: Jun 7, 2005
Publication Date: Dec 22, 2005
Applicant:
Inventor: Angel Lorenzo Barroso (Argentona)
Application Number: 11/146,026