JP2009037990A - Electric wire crusher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric wire crusher crushing recycled wires such as waste wires or cut waste wires, and enabled to efficiently separate/classify for every raw material. <P>SOLUTION: The electric wire crusher includes a rotary knife 30 for crushing fed recycled wires, and a nearly hemicycle gutter-like unloading mesh 40 fitted in an outer peripheral long side direction of the rotary knife 30 for screening the crushed wire crushed pieces. Mesh holes of the gutter-like unloading mesh are unevenly opened to a gutter-like whole mesh forming face, for instance, opened except at right and left upper edge sides on the gutter-like whole mesh forming face, or with an opening interval of the mesh holes made different between a gutter-like peripheral direction and a long side direction. With this, unloading of long wires as they are, or unloading of crushed wire pieces with insufficient separation/classification can be reduced. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an electric wire crusher that crushes recycled electric wires such as waste electric wires and cut waste electric wires so that they can be efficiently separated and sorted for each material.

  2. Description of the Related Art In recent years, waste wires that have been laid out and replaced, cut waste wires that are generated during connection work, and the like are sorted and recycled (reused) for each material. In this recycling, the electric wire to be recycled is cut to a length of about 100 cm (shorter electric wires shorter than this length), put into an electric wire crusher, crushed, and each material (coating plastic or conductor metal) Etc.) and collected.

As such an electric wire crusher, various things are proposed conventionally (for example, cited references 1-2). These electric wire crushers have a structure in which a substantially semicircular bowl-shaped discharge mesh is attached in the longitudinal direction of the outer periphery of a rotary blade that crushes electric wires. Then, as shown in FIGS. 5 to 6, in the normal bowl-shaped discharge mesh 10, the mesh holes 11 are formed on almost the entire bowl-shaped surface, that is, the entire mesh forming surface (region A _1-in FIG. 6). A ₂ ) with respect to A ₂ ), the electric wire fragments that are opened almost uniformly and are crushed by the rotary blade are separated and sorted mainly from the mesh holes 11 on the bottom surface side of the bowl-shaped discharge mesh 10 and are discharged. It has become.
JP 59-025111 No. 07-004735

  However, in the electric wire crusher having the above-described conventional structure, there is a problem in that a part of the input recycled electric wire does not become a predetermined fine electric wire fragment and is discharged in a long form. There is also a problem that separation and separation for each material is insufficient.

The inventor, as a cause of this, is not sufficiently discharged and is not discharged from the bottom side of the mesh, but is wound up by a rotary blade and caught on both left and right upper edge sides of the mesh. I inferred that it would be discharged from the hole for a long time.
That is, during normal trough discharge mesh 10, is hung from the bottom side to the both upper edge side (area A ₁ portion in FIG. 6) is substantially circular cross-section, in the two upper edge side (region a ₂ portion in FIG. 6), there a straight cross-section. For this reason, a relatively wide gap is formed between the both upper edge portions and the rotary blade, and it seems that the above-described crushing is insufficient and the electric wire that remains long is caught.
In addition, the separation and separation of each material is insufficient because if the mesh hole 11 is almost on the entire surface of the bowl, the residence time of the electric wire in the device is short and insufficient due to the large number of holes, and the rotating blade or mesh I inferred that it might be due to the small number of impacts in the house.

  Therefore, the inventor made a prototype of a hook-shaped discharge mesh on both left and right upper edges of the hook-like shape and made a predetermined range a non-mesh area without a mesh hole. It was found that the emission of can be greatly reduced. It was also found that the formation of this non-mesh region improves the separation / separation performance for each material because the residence time until separation / separation at the time of electric wire crushing becomes longer. Further, it has been found that this improvement in separation / sorting performance can also be obtained by changing the opening interval of the mesh holes, for example, by thinning the longitudinal direction with respect to the bowl-shaped circumferential direction.

  This invention is made | formed in view of such a point, and intends to provide the electric wire crusher which crushes the recycled electric wire and enabled it to isolate | separate efficiently for every raw material.

  The present invention according to claim 1 is a substantially semicircular bowl-shaped discharge mesh that sifts through a rotating blade for crushing an input recycled electric wire and an electric wire crushing piece attached and crushed along the outer peripheral longitudinal direction of the rotating blade. In the electric wire crusher provided with the above, the electric wire crusher is characterized in that the mesh holes of the bowl-shaped discharge mesh are opened non-uniformly with respect to the entire surface of the bowl-shaped mesh.

  According to a second aspect of the present invention, there is provided the electric wire crusher according to the first aspect, wherein the mesh holes are opened except for both upper edge sides on the entire mesh-forming surface of the bowl shape.

  The present invention according to claim 3 is characterized in that a range of both upper edge sides where the mesh holes are not opened is a range of a depression angle of about 30 ° when the entire mesh forming surface of the hook shape is about 180 °. It exists in the electric wire crusher of Claim 2.

  The present invention according to claim 4 is characterized in that the opening intervals of the mesh holes on the entire surface of the mesh-shaped mesh formation are different in the circumferential direction and the longitudinal direction of the cage shape. It is in the electric wire crusher of description.

  The present invention according to claim 5 is the electric wire crusher according to claim 4, wherein the opening interval in the longitudinal direction is made larger than the opening interval in the circumferential direction of the mesh-like shape of the mesh hole.

According to the electric wire crusher of the present invention, since the mesh holes of the bowl-shaped discharge mesh are opened non-uniformly with respect to the entire surface of the bowl-shaped mesh formation, as a result, the residence time of the recycled wires in the apparatus Longer and better separation / separation for each material can be obtained.
Moreover, when the mesh hole is opened except for both upper edge sides, it is possible to greatly reduce the discharge of the broken pieces of the electric wire. Furthermore, if the opening intervals of the mesh holes are made different in the circumferential direction of the bowl and the longitudinal direction, for example, if the mesh holes in the longitudinal direction are thinned out, better separation / sorting performance can be obtained.

FIG. 1 shows a main part as an example of an electric wire crusher according to the present invention.
In the figure, 20 is a crushing part that forms a main part of the electric wire crusher, 30 is a rotary blade (rotary blade part) in which a large number of blade parts 32 are arranged in an appropriate shape in the axial direction of the rotary shaft 31, and 40 is a rotary blade 30. A semicircular bowl-shaped discharge mesh 50 attached in the longitudinal direction of the outer circumference of the outer peripheral wall 50 is a frame portion in which the rotary blade 30 is housed and the recycled electric wire L is inserted from the upper opening 51.

  The generally semicircular bowl-shaped discharge mesh 40 is as shown in FIG. 2 and, as shown in FIGS. Are opened except for both upper edges 42 and 42 side. The range on the both upper edges 42 and 42 side where the mesh hole 41 is not opened is not particularly limited. For example, when the ridge-like all mesh forming surface is about 180 °, the depression angle θ is about 30 °. do it. That is, the range of the mesh forming surface is a region B (a range of about 120 °) in FIG. Note that the left and right upper edge portions 42, 42 of the bowl-like shape have a generally straight cross-sectional shape.

  Moreover, it is good to make the opening space | interval of the mesh hole 41 in a bowl-shaped all mesh formation surface different in a bowl-shaped circumferential direction and a longitudinal direction. For example, as shown in FIG. 3, the opening interval in the longitudinal direction may be increased with respect to the bowl-shaped circumferential direction. In this case, the opening interval in the longitudinal direction is thinned by one mesh hole 41. Note that this thinning-out may be about two pieces. Also, the direction of thinning can be reversed from the above. Furthermore, it can be thinned out in a random direction with a special shape without being limited to the circumferential direction or the longitudinal direction. In general, any method that reduces the opening area of the hole with respect to the total mesh formation area may be used.

As described above, the mesh holes 41 are not provided on both the left and right upper edges 42 and 42 of the bowl-like shape, and the opening intervals in the longitudinal direction are thinned out. According to the bowl-shaped discharge mesh 40, the residence time of the recycled electric wire L at the time of crushing can be lengthened. As a result, the wires to be crushed and the wires being crushed have a large number of impacts from the side of the device, so that good separation and separation of the wires were obtained. That is, the electric wire fragment L1 that has been sufficiently separated and separated is discharged from the bowl-shaped discharge mesh 40 in the form of being sieved.
In addition, the non-mesh forming surface on the both upper edges 42 and 42 side is not crushed and has a long shape, and since there is no mesh hole 41, it does not get caught, so that a good crushing effect is obtained. .

  In a conventional wire crusher, if there are many wires that are discharged in a long form or insufficiently separated / sorted wires, these multiple re-inputs are required. In the electric wire crusher, the number of re-insertions can be greatly reduced. Of course, if the re-input amount is small, the amount of new input can be increased accordingly, so that the work efficiency can be improved.

By the way, in order to clarify the effect in the electric wire crusher of the present invention, the recycle electric wire is 1 by the hook-shaped discharge mesh (Examples 1 and 2) which is an example and the hook-shaped discharge mesh of the conventional structure (Comparative Example 1). Table 1 shows the results when crushed after being thrown in once.
In Table 1, the amount of recycled wire input is 100, the amount of discharge is 1 (the amount of wire breakage that remains long,%), the amount of discharge is 2 (the amount of wire breakage that is insufficiently separated and separated, %), The total defective discharge amount indicates the total discharge amount (discharge amount 1 + discharge amount 2).

  In both Examples and Comparative Examples, an electric wire crusher having substantially the same structure was used except for the bowl-shaped discharge mesh. The outer diameter of the rotary blade is 400 mm, the length of the substantially semicircular bowl-shaped discharge mesh is 1000 mm, the radius is 200 mm, and the outer diameter of the mesh hole is 6 mm. The recycled electric wire has a copper wire diameter of 1.6 mm and a resin coating thickness of 2 mm. The saddle-shaped discharge mesh of Example 1 has mesh holes, except for the left and right upper edge sides of the saddle-like shape (when the saddle-like total mesh forming surface is about 180 °, the depression angle is about 30 °). The openings are opened almost uniformly in the circumferential direction and the longitudinal direction. As shown in FIGS. 2 to 4, the saddle-shaped discharge mesh of Example 2 excludes both left and right upper edge sides of the saddle-like shape (when the saddle-like whole mesh forming surface is about 180 °, the depression angle is (A range of about 30 °) A mesh hole is thinned out by one mesh hole in the longitudinal direction with respect to the circumferential direction. As shown in FIG. 5 to FIG. 6, the bowl-shaped discharge mesh of Comparative Example 1 has mesh holes formed almost uniformly on the entire bowl-shaped mesh forming surface.

  From Table 1, it can be seen that in Examples 1 and 2 of the present invention, compared to Comparative Example 1, the amount of discharge 1-2 is small. Therefore, in Examples 1 and 2 of the present invention, the re-input amount for the unprocessed portion is small, whereas in the case of Comparative Example 1, the re-input amount for the unprocessed portion is large. It turns out that many inputs must be repeated, and the workability is inevitably lowered.

  In addition, the size (outer diameter) of the mesh hole in the bowl-shaped discharge mesh of the present invention is the size (outer diameter of the conductor metal or outer diameter of the resin coating) and type (single wire, composite wire, optical fiber included) of the corresponding recycled electric wire. It will be changed appropriately according to the line etc.). For example, it may be changed within a range of about 6 to 13 mm.

It is a schematic explanatory drawing of the principal part of the electric wire crusher which concerns on this invention. It is a perspective view of the bowl-shaped discharge mesh used for the electric wire crusher of FIG. FIG. 3 is a side view of the bowl-shaped discharge mesh of FIG. 2. FIG. 3 is an end view of the bowl-shaped discharge mesh of FIG. 2. It is a side view of the bowl-shaped discharge mesh in the conventional electric wire crusher. FIG. 6 is an end view of the bowl-shaped discharge mesh of FIG. 5.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 20 ... The crushing part which makes the principal part of an electric wire crusher, 30 ... A rotary blade, 40 ... A bowl-shaped discharge | emission mesh, 41 ... Mesh hole, 50 ... Frame part

Claims (5)

In the electric wire crusher provided with the rotary blade for crushing the recycled electric wire that has been charged and the roughly semicircular bowl-shaped discharge mesh that sifts through the electric wire crushing pieces attached to the outer peripheral longitudinal direction of the rotary blade. An electric wire crusher characterized in that the mesh holes of the bowl-shaped discharge mesh are non-uniformly opened with respect to the entire mesh-form surface of the bowl-shaped discharge mesh. The electric wire crusher according to claim 1, wherein the mesh holes are opened except for both upper edge sides on the hook-like all mesh forming surface. 3. The electric wire crushing according to claim 2, wherein a range of the upper edge side where the mesh holes are not opened is a range of a depression angle of about 30 ° when the hook-like all mesh forming surface is about 180 °. Machine. The electric wire crusher according to claim 1, 2 or 3, characterized in that opening intervals of the mesh holes in the entire ridge-shaped mesh forming surface are different in the circumferential direction and the longitudinal direction of the ridge shape. The electric wire crusher according to claim 4, wherein the opening interval in the longitudinal direction is made larger than the opening interval in the circumferential direction of the mesh shape of the mesh hole.

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