JP6182076B2 - Metal wire compact and method for producing the same - Google Patents

Description

  The present invention relates to a metal wire compact used as a DPF (diesel particulate collection filter) packing and cushioning material, an automobile muffler gasket, or the like.

  In a conventional metal wire compression body, a cylindrical wire mesh 80 is compressed in the cylinder length direction by a compression molding machine 90 or the like, as in the metal wire compression body 81 of Conventional Example 1 (prior art document 1) shown in FIG. There is something to be.

  In addition to this, like the metal wire compression body 82 of the conventional example 2 shown in FIG. 9, the cylindrical wire mesh 80 is rolled inward from both sides in the cylinder length direction, and then compressed by a compression molding machine 90 or the like. Some are compressed in the tube length direction.

  In addition, the wire mesh 80 is wound in the length direction a plurality of times and compressed in the width direction by the compression molding machine 90 or the like as in the metal wire compression body 83 of the conventional example 3 shown in FIG. There is something to become. Note that both ends of the wire mesh 80 are cut at about 45 °, so that the bonding force at both ends becomes strong and is difficult to peel off.

JP 2013-19347 A

  However, in such metal wire compression bodies 81 to 83 of Conventional Examples 1 to 3, since the boundary between layers such as a wound layer is exposed to the outside, displacement and cracking easily occur at the boundary between the exposed layers.

  Specifically, for example, in the case of the metal wire compression body 83 of the conventional example 3, as shown in FIG. 11A, the boundary between the winding layers L, L,. When molding, as shown in FIG. 11B, the deviation D1 is likely to occur at the boundary. Further, after molding, as shown in FIG. 11 (c), it is easy to peel off at the boundary between the wound layers L, L,...

  And such a shift | offset | difference D1 and a crack D2 are easy to generate | occur | produce, so that the metal wire compression body 83 is a low density and it is large diameter. When such a deviation D1 or crack D2 occurs, when a DPF (diesel particulate collection filter), a muffler pipe, or the like is inserted inside the metal wire compression body 83, it is caught by the deviation D1 or crack D2. It becomes easy to turn up easily.

In view of this, an object is to make it difficult for displacement and cracking to occur. Furthermore, as will be described later, another object of the present invention is to make it easy to perform a series of operations of winding a superposed metal mesh and covering the superposed metal mesh, and making it difficult to be disassembled after molding.

In order to achieve the above object, the metal wire compression body of the present invention comprises an overlapped portion formed by compressing an overlapping wire mesh in a state of being wound in a plurality of times in the length direction and being stacked in a plurality of winding layers. wire mesh, viewed contains a width direction is compressed in a state of being covered in a manner to cross the plurality of winding layers on the side and becomes covered portion of the overlapped wire mesh, the one end portion of the wire mesh for one material It is a covering wire mesh, The part of the other end side rather than the covering wire mesh of the material wire mesh is a wire mesh for overlapping .

That is, the wire mesh for covering the overlapping wire mesh, that is formed on one body. Winding a lap wire mesh, that the series of operations covering the wire mesh for covering is easily, and in that it hardly decomposed after molding, because it is preferably formed integrally.

Further , in the method for producing a metal wire compressed body according to the present invention, a portion of one material wire mesh on one end side is used as a covering wire mesh, and a portion on the other end side of the material wire mesh is used as an overlapping wire mesh. The folding wire mesh is made narrower than the covering wire mesh by folding the overlapping wire mesh in the width direction, the covering wire mesh is wound in the length direction, and the overlapping wire mesh is wound around the outer peripheral side multiple times. Are stacked in a plurality of winding layers, and the covering wire mesh is folded in the width direction so that the covering wire mesh is placed on the side in the width direction across the plurality of winding layers, and then the material wire mesh is covered. from use wire mesh side is packed with a male characterized by forming a metal wire compacts.

  The material of the overlapping wire mesh and the covering wire mesh is not particularly limited, and examples thereof include iron, copper, aluminum, and alloys thereof. Among these, stainless steel is preferable because it is excellent in heat resistance and corrosion resistance.

According to the present invention, since the covering wire mesh is placed on the side of the overlapping wire mesh so as to straddle the plurality of layers, the boundary between the layers is not exposed to the outside. For this reason, misalignment and cracking hardly occur at the boundary between layers. Further, since the overlapping wire mesh and the covering wire mesh are integrally formed, a series of operations for winding the overlapping wire mesh and covering the covering wire mesh are facilitated, and are difficult to be disassembled after molding.

(A) is side surface sectional drawing which shows DPF in which the metal wire compression body of Example 1 was installed, (b) is a perspective view which shows a metal wire compression body, (c) is a partial cross section which shows a metal wire compression body It is a perspective view. It is a side view which shows the manufacturing procedure of the metal wire compression body of Example 1 to (a)-(c). It is a side view which shows the manufacturing procedure of the metal wire compression body of Example 1 to (d)-(f). It is a side view which shows the manufacturing procedure of the metal wire compression body of Example 1 to (g) (h). It is a side view which shows the manufacture procedure of the metal wire compression body of Example 1 to (i)-(k). (A) is side surface sectional drawing which shows the muffler in which the metal wire compression body of Example 2 was installed, (b) is a perspective view which shows a metal wire compression body, (c) is a partial cross section which shows a metal wire compression body It is a perspective view. It is a side view which shows the manufacture procedure of the metal wire compression body of Example 2 to (i)-(k). It is a side view which shows the manufacture procedure of the metal wire compression body of the prior art example 1 to (a)-(d). It is a side view which shows the manufacture procedure of the metal wire compression body of the prior art example 2 to (a)-(d). It is a side view which shows the manufacture procedure of the metal wire compression body of the prior art example 3 to (a)-(d). (A) is a perspective view which shows the metal wire compression body of the prior art example 3, (b) is a side end view which shows when the metal line compression body generate | occur | produced, (c) shows when a crack generate | occur | produces. It is a side surface end view.

  The metal wire compression body of the present invention will be described below with reference to the drawings.

  The metal wire compact 1 shown in FIGS. 1 to 5 is a packing and cushioning material installed between the outer surface of a DPF (diesel particulate collection filter) 30 and the inner surface of its storage container 31. The metal wire compression body 1 is a mesh ring made by press-molding a metal mesh 10 for material.

  The metal wire compression body 1 includes a superposed portion 1a in which a superposed wire mesh 11 is wound in a plurality of times in the length direction and is compressed in a state of being superposed in a plurality of winding layers L, L. The wire mesh 12 includes a covered portion 1b that is compressed in a state where the wire mesh 12 is placed on the side portion in the width direction of the overlapping wire mesh 11 so as to straddle the plurality of wound layers L, L. A concave portion 1c for fitting the outer peripheral portion of the end face of the DPF 30 is provided on the inner peripheral side on one side of the metal wire compressed body 1 in the axial direction.

The metal wire compact 1 is manufactured by the following procedure.
[1] First, one cylindrical material wire mesh 10 shown in FIG. 2A is prepared. The material wire mesh 10 is a knitted stainless steel wire having a diameter of 0.1 to 0.2 mm (circular knitted product). A portion of the material wire mesh 10 on one end side is a covering wire mesh 12, and a portion on the other end side of the material wire mesh 10 than the covering wire mesh 12 is an overlapping wire mesh 11.

[2] Next, as shown in FIG. 2 (b), the cylindrical metal wire mesh 10 is crushed and flattened in the radial direction to form a double sheet. Then, a cut 13 is made between the covering wire mesh 12 and the overlapping wire mesh 11 to about half the width.

[3] Next, as shown in FIG. 2 (c), the double-sheet-shaped overlapping wire mesh 11 is folded in the width direction (downward) to make the overlapping wire-mesh 11 into a quadruple sheet shape. As a result, the overlapping wire mesh 11 (quadruple) on the other end side is narrower than the covering wire mesh 12 (double) on the one end side.

[4] Next, as shown in FIGS. 3D and 3E, the covering wire mesh 12 is wound around the shaft member 22 of the compression molding machine 20. At this time, it is preferable that the covering wire mesh 12 is wound tightly (one round).

[5] Next, as shown in FIG. 3 (f), the overlapping wire mesh 11 is wound around the outer periphery of the covering wire mesh 12 a plurality of times, and as shown in FIG. Are stacked in a plurality of winding layers L, L. At this time, the end of the overlapping wire mesh 11 (quadruple sheet shape) may be twisted in the width direction when there is a fear of being unraveled.

[6] Next, as shown in FIG. 4 (h), the covering wire mesh 12 is folded in the width direction (downward) to cover one side portion (upper portion) of the overlapping wire mesh 11 in the width direction. The wire mesh 12 is covered so as to straddle the plurality of wound layers L, L.

[7] Next, as shown in FIG. 5 (i), the shaft member 22 around which the metal wire mesh 10 is wound is set inside the female die 23 of the compression molding machine 20.

[8] Next, as shown in FIG. 5 (j), the female die 23 is covered with the male die 21. Thereby, the metal wire mesh 10 is compressed from the covering wire mesh 12 side by the male die 21 to form the metal wire compressed body 1. The male mold 21 is provided with a convex portion 21 c for forming the concave portion 1 c in the metal wire compressed body 1.

[9] Next, as shown in FIG. 5 (k), the compression molding machine 20 is opened and the metal wire compact 1 is taken out.

  According to the first embodiment, the covering wire mesh 12 is placed on the side portion (upper portion) on the width direction side of the overlapping wire mesh 11 so as to straddle the plurality of winding layers L, L. The border of L ... is not exposed to the outside. For this reason, when molding by compression, it is difficult for displacement to occur at the boundary between the wound layers L, L,..., And cracking is difficult to occur at the boundary between the wound layers L, L,.

  Therefore, even when the metal wire compressed body 1 has a low density or has a large diameter, displacement and cracking hardly occur. Therefore, when the DPF 30 is inserted inside the metal wire compressed body 1, it is difficult to cause a problem that the DPF 30 is caught due to displacement or cracking.

  The metal wire compression body 2 shown in FIGS. 6 and 7 is a gasket installed between the outer surface of the pipe of the muffler 40 and the inner surface of the exhaust pipe 41. Similar to the first embodiment, the metal wire compression body 2 includes an overlapping portion 2a and a covering portion 2b. Specifically, the metal wire compressed body 2 is different from the first embodiment in that the concave portion 1c is not provided on the inner peripheral side, and the other points are the same.

  As shown in FIG. 7, the manufacturing method of the metal wire compressed body 2 is different in that the convex portion 21c for forming the concave portion 1c is not provided in the male die 21, and is the same in other points. Further, as shown in FIG. 7 (i), the covering wire mesh 12 is covered with one side portion (upper portion) in the width direction of the overlapping wire mesh 11, and the other side portion (lower side portion). It is preferable to extend the cover.

  According to the second embodiment, the same effect as that of the first embodiment can be obtained in the gasket used for the muffler 40.

  In addition, this invention is not limited to the structure of the said Example, In the range which does not deviate from the meaning of invention, it can change suitably and can be actualized.

1 Metal wire compact (packing and cushioning material)
1a Overlapping part 1b Covering part 2 Metal wire compression body (gasket)
2a Stacking part 2b Covering part 10 Material wire mesh 11 Stacking wire mesh 12 Covering wire mesh 21 Male L Lound layer

Claims (2)

The overlapping wire mesh (11) is compressed in a state where the wire mesh (11) is wound a plurality of times in the length direction and stacked in a plurality of wound layers (L), and the covering wire mesh (12). Includes a covered portion (1b, 2b) that is compressed in a state where the plurality of wound layers (L) are placed on the side portions in the width direction of the overlapping wire mesh (11),
One part of the wire mesh (10) for the material is a covering wire mesh (12), and the part of the material wire mesh (10) on the other side of the covering wire mesh (12) is the overlapping wire mesh (11). ) der Rukin genus line compression body. A part of one material wire mesh (10) on one end side is a covering wire mesh (12), and a part of the material wire mesh (10) on the other side of the covering wire mesh (12) is an overlapping wire mesh (11). age,
The folding wire mesh (11) is made narrower than the covering wire mesh (12) by folding the overlapping wire mesh (11) in the width direction,
The covering wire mesh (12) is wound in the length direction, and the overlapping wire mesh (11) is wound around the outer peripheral side a plurality of times to overlap the overlapping wire mesh (11) in a plurality of winding layers (L). After covering the plurality of wound layers (L) with the covering wire mesh (12) on the side portion in the width direction of the overlapping wire mesh (11) by folding (12) in the width direction,
A method of manufacturing a metal wire compressed body in which a metal wire compression body (10) is formed by compressing a metal wire compression body (1, 2) by compressing with a male die (21) from the covering wire mesh (12) side.

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