FR2461663A3 - SOLID STATE GLUE WIRE COIL STRUCTURE AND SUPPORT DEVICE FOR SHAPING AND PRUNING THESE COILS - Google Patents

Abstract

THE INVENTION RELATES TO A STRUCTURE OF A SOLID STATE GLUE WIRE REEL AS WELL AS A SUPPORT DEVICE FOR FORMING AND UNWINDING SUCH STRUCTURE. THE STRUCTURE ACCORDING TO THE INVENTION IS OF THE TYPE WHICH INCLUDES A BODY 2 OF GLUE WIRE WOUND ON ITSELF AND IS CHARACTERIZED IN THAT IT IS CONFORMED AS A FREE-SUPPORTING COIL 1 PRESENTING A TUBULAR CORE OF SUPPORT 3, LINKS 4 OF THE SPIRES BEING PROVIDED.

Description

Solid state glue wire coil structure and disc

  Positive support for formatting and rolling out

said coils.

  The present invention relates to a solid state glue wire coil structure and a support device for shaping and unwinding such a structure. Although essentially referring for simplicity to a coil of solid state glue wire, the invention also applies to other materials of the invention.

hot melt type, for example.

  Glue threads wound on traditionally

  of coils comprising a cylindrical core and

  Parallel side plates are already known in

  annuity dimensions and geometric shapes ..

  The supports may be constituted by a moving body

  made of synthetic material or by a soul and cheeks

  dependent cardboard, cheeks usually sheet.

  enclosing said cardboard core by its ends and blocking this soul with teeth obtained by punching and finally ensuring the correct positioning of the lateral cheeks by means of an outer circular rim of which

they are equipped.

  The known wound yarns obtained by extrusion into

  tinu glue in the solid state, appear in the commercial

  this as a complete set comprising a skein of glue threads already rolled on the body of its support. The latter is, of course, a "throwaway" body whose function is

  medium is used once, after having installed it

  on a conventional winder, to form a support body for the skein and then to allow the unwinding of the coil in a user machine after placing it on the latter. These bodies of support for coils are therefore in practice exclusively for the purpose of supporting said coils in order to prevent them from deforming or so that they do not unroll in an uncontrollable manner. On the other hand, it is obvious that the manufacturing cost of these coil support bodies is considerable, whether to make them synthetic material, because of

  very expensive mussels which must, moreover, include

  movable parts or to make them in several parts in cardboard, because one must in this case also provide cheeks

  sheet metal, which implies costly assembly operations.

blage of the various pieces.

  The present situation being thus, the present invention

  The subject of this invention is a coil structure of

  which is able to eliminate the aforementioned drawbacks.

  The invention will be well understood from the description which

  follows with reference to the accompanying drawings. Of course, the

  description and drawing are only given as an example

indicative and not limiting.

  FIG. 1 is a perspective view of a first

  self-supported coil structure according to the invention.

  FIG. 2 is a partial vertical sectional view of

the coil of Figure 1.

  FIG. 3 is a perispective view of a cymbal core.

  lindrique as an internal support, particularly in the

  case of coils having a large width.

  FIG. 4 is a perspective view of a second

  self-supporting coil structure according to the invention.

  FIG. 5 is a partial vertical sectional view

of the coil of Figure 4.

  FIG. 6 is a profile view of one of the two

  identical retentions of the coil of FIG.

  Figures 7 and 8 show lightened conformations

  two variants of the side collars.

  Figure 9 is a perspective view of a third variant of a self-supporting coil structure according to the invention.

  FIG. 10 is a profile view with a cross-section

  partial structure of a support structure for lx forma-

  the use of self-supporting reels according to the

vention.

  Figure 11 is a median vertical section of a section

  conde support structure for training and use

  self-supporting coils according to the invention.

  FIG. 12 is a perspective view of a blocking element of the supports according to the invention on the spindle of a

  winding or unrolling machine.

  The self-supporting coil structure according to the invention is indicated as a whole by 1. It is formed by a

  body 2 of turns wound on a tubular core 3 of sup-

  Harbor. Par 4 indicates links preventing the body 2 from

  close turns of glue wire or the like can be

make.

  According to the invention, these links 4 advantageously

  in individual strips of material of preference

  self-adhesive, heat-sealable or the like.

  In the example of FIG. 1, the strips 4 pass through

  the tubular core 3. However, being self-supporting

  adhesive, these strips 4 may also not

  on the contrary, stop at the very edge of the soul.

  It would also be possible to provide, instead of individual strips 4 a single continuous band arranged in spirals

around the spool 1.

  With regard to the inner support core 3, she

  could be indifferently in cardboard, synthetic material

  tick or any other suitable material. Said soul 3 is therefore the only element "to throw"

  of the self-supporting structure of glue threads according to the in-

  vention, shown in Figures 1 to 3.

  In the self-supporting coil according to FIGS. 4 to 8, the same parts as those of the example of FIGS.

  have the same references. Par 5 indicates lateral cheeks

  ral. As this solution is particularly usable

  for coils of very large diameter and small thicknesses

  4 bands are anvatageijqPage of the crossing type

by the center of the whole.

  As can be seen in Figures 7 and 8, it would be obvious

  it is impossible to foresee cheeks with openwork or

  notches to lighten their weight.

  In the even simpler solution of FIG. 9, the cardboard core 3 and the cheeks 5 have been removed, the coil 1 then comprising only a coil body 2 formed by the wire wound on itself and strips 4. These, as in the previous examples, may be bands

  heat-sealable, may be of self-adhesive material, may

  consist of small metal flanges or similar

  res. According to another variant of the invention, it is also possible to obtain the self-supporting capacity of the body of the coil or to increase this faculty by using a thin

  adhesive glue, arranged for example between successive layers of

sives of turns.

  It can be seen from what has been explained that the self-supporting structure coils according to the invention make it possible to

  achieve the goal and provide the intended benefits.

  In particular, it is possible to completely eliminate the considerable expense of manufacture and material of the known types which require obtaining collar-shaped supports for the coils. As a result, significant savings are realized, particularly if

  they are considered as a percentage of the cost of the copys-

winding the glue wire.

  The solutions of the invention also have the advantage of

  end up with less bulky products, which simplifies shopping. At the same time, the self-supporting structures according to the invention weigh less than the known coils.

  which ultimately leads to considerable savings in emulsification

Shipping and shipping.

  An environmental benefit results from the elimination of

  "lost" or "to be discarded", particularly in the case of

synthetic material.

  In practice it is possible to provide a support core of various types, for example with longitudinal grooves, or with openings of any geometric conformation, for reasons of lightening, without for that> r '

  depart from the scope of the present invention.

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  The dimensions and the geometrical conformations of the coils according to the invention as well as the chosen materials can be of any type at will, without

  it goes beyond the scope of the invention.

  Similarly, the strips can be replaced by elastic staples or the like, depending on the dimensions, the weight

  and the geometrical conformation of the coil considered.

  Referring to Figures 10 - 12, we see a sup-

  port according to the invention which serves for winding the coil on a winder, and the unwinding of the self-supporting coil on a user machine and which is indicated as a whole by 6. In the example of Figure 10, said support is formed by first and second half-supports 7-8. In the example shown, those-ni

  have an outer sleeve 9-10 in which

  not shown) are provided for accommodating locking means, for example bolts 11 - 12 passing through corresponding bores (not shown) of the mandrel 13 of FIG.

  the machine to wind or unroll at the desired distance.

  The mandrel 13 advantageously has a slight deterioration

  puille towards its end 13a, to facilitate the withdrawal

  of the coil structure 1 after its formation and for

  cilitate the establishment of a coil structure 1 according to the invention on the mandrel of the unwinding machine or

wrap.

  In FIG. 10, a line with a dashed line 3 indicates a core used for the formation of coils 1 and, by dashed lines 5 ', cheeks, for example made of cardboard, have been indicated for the formation of structures.

  of reels 1 with only cheeks, as indicated below.

  above. The embodiment illustrated in FIG. 11 is different from that described previously in that it provides a core 14 formed by two half-cores 14a and 14b interconnected by interlocking. By 15 there is illustrated an element for positioning and locking the cheeks 5 on the mandrel 13. The cheeks 5 shown in FIG.

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  in the example shown, with radial slots 16 for

  the passage of links, for example bands 4. To facilitate

  ter the execution of these links it is obviously possible to provide, as for the other types of coils, slots in the half-cheeks 6, 7, as well as in the mandrel

  13, as can be understood from Figures 10 and 11.

  For the removal of the finished spool 1 from a winding machine, or for setting up the self-supporting spool on a user machine, it is necessary each time to remove a half-support 6, 7 or 15 of the support device from

the coil.

  In practice it is possible to substitute parts for others technically and functionally equivalent

  without departing from the scope of protection of the

  the invention. Dimensions, materials and conformation

  geometry of the assembly, as well as the dimensions of the component parts can be chosen at will without

  for that, depart from the scope of the present invention.

  All the features that can be deduced

  of the description, the claims and the drawings, are

  considered substantial for the invention, either

  individually, in combination.

Claims (7)

REVENDICATIVNS   Coil structure of glue wire. the solid state or other thermofusible material, comprising a body (2) of adhesive wire wound on itself, characterized in that it is shaped as a self-supporting coil (1) having a core (3) tubular support, links (4) turns being provided.   2 - Solid state glue wire coil or other thermofusible material, comprising a body (2) of glue wire wound on itself, characterized in that it is of the self-supporting type, said coil (1) having two cheeks (5) for positioning, links (4) turns being provided.   3 - coil structure according to claims 1 and 2,   characterized in that the links (4) consist of   adhesive material placed around the spool and   such as hot melt strips and the like.   4 - coil structure according to claims 1 and 3,   characterized in that the strips (4) of adhesive material   pass inside the soul (3).   - coil structure according to claims 1 and 3,   characterized in that the links (4) of adhesive material   do not go inside the soul (3).   6 - coil structure according to claim 1, characterized   that links (4) consist of a strong band   by a single continuous ribbon wound in the shape of spira-   around a body (2) of coiled turns.   7 - coil structure according to claim 1, characterized   in that the tubular core (3) and / or the cheeks (5)   have lightening openings.   8 - coil structure according to claims 1 and 2,   characterized in that it has, in addition to links   (4), or in their place, an adhesive placed between the   successive turns to give the body (2)   the coil the desired freestanding faculty.