WO2003048538A1

WO2003048538A1 - Finned multi-aperture sheet metal, method of manufacturing the sheet metal, part for exhaust emission control device using the sheet metal, and method of manufacturing the part for exhaust emission control device

Info

Publication number: WO2003048538A1
Application number: PCT/JP2002/011701
Authority: WO
Inventors: Keiichi Shimizu; Shinichi Taya
Original assignee: Toyo Kohan Co., Ltd.
Priority date: 2001-11-29
Filing date: 2002-11-11
Publication date: 2003-06-12
Also published as: JP2003166420A; US20060272377A1; AU2002365760A1; US20050044915A1

Abstract

A holed sheet metal with multiple holes most suitable for forming a spaced body with a net-like cross section as a part for exhaust emission control device, a method of manufacturing the sheet metal, a part for exhaust emission control device using the sheet metal, and a method of manufacturing the part, wherein a plurality of holes (3) are formed in a long flat-like sheet metal (2) to form the finned sheet metal (1), and the holes (3) in the finned sheet metal (1) are formed by bending fins (8) from the sheet metal (2) in the direction of one surface side of the sheet metal, whereby the sheet metal can be easily provided at a low cost.

Description

Finned porous metal plate, method for producing the same, finned porous metal plate, component for exhaust gas purification device, and method for producing component for exhaust gas purification device

Technical field

The present invention relates to an apparatus for purifying exhaust gas emitted from an internal combustion engine such as an automobile engine.

Finned perforated metal plate, method of manufacturing the same, and finned field

TECHNICAL FIELD The present invention relates to a component for an exhaust gas purification device such as a carrier and a filter using a perforated metal plate and a method for producing the component for an exhaust gas purification device.

Background art

An exhaust gas purifier for an internal combustion engine such as an engine or a generator of a car is made of metal in which a cylindrical honeycomb body made of the same metal steel is fitted in a cylindrical casing made of metal steel such as a heat-resistant stainless steel plate. A carrier is used. The conventional metal carrier having such a configuration is generally manufactured by winding a flat thin plate made of a strip-shaped metal thin plate and a corrugated thin plate obtained by corrugating the flat thin plate in a spiral shape. The honeycomb body is fitted into a cylindrical metal casing, and thereafter, the contact portion between the flat plate and the corrugated plate of the hollow body having the mesh cross section, and the honeycomb body and the casing are attached, welded, and diffused. It is manufactured by joining by a method such as joining. Furthermore, various catalysts are coated to provide an exhaust gas purifying device having a purifying function. However, in the method for manufacturing a metal carrier having such a configuration, the operation of winding the flat thin plate and the corrugated thin plate in a spiral shape in a state where the flat thin plate and the corrugated thin plate are stacked is different in that the bending elasticity of the two thin plates is different, and Stable work could not be performed due to the relationship of the friction coefficient in the contact area, etc., and it was extremely difficult to manufacture.

For example, at both ends in the axial direction of a honeycomb body manufactured as an intermediate part, When the winding force of the plate and the corrugated sheet is different, the spirally wound honeycomb body does not have an appropriate cylindrical shape, and one end of the honeycomb body in the axial direction is There was a problem that the center of the winding protruded in a bamboo shoot shape, and the other end became a mortar-shaped (bamboo shoot-shaped) shape (roll misalignment problem during winding).

Therefore, the present invention provides a perforated metal plate and a method for manufacturing the perforated metal plate which are optimal for forming a hollow body having a mesh-like cross section of an exhaust gas purification device component, an exhaust gas purification device component using the perforated metal plate, and a method for manufacturing the same Is intended to be provided at low cost and easily. Disclosure of the invention

To achieve the above object, a finned perforated metal plate of the present invention is a finned perforated metal plate in which a plurality of holes are formed in a long flat strip-shaped metal thin plate, wherein the holes are formed of the metal thin plate. Characterized in that the fins are formed by bending the fins from one side to the other, or the holes are formed by bending the fins from the thin metal plate to any side. I do.

The method for producing a finned perforated metal plate of the present invention is a method for producing a finned perforated metal plate in which at least a hole having fins is formed in a long flat band-shaped thin metal plate. A plurality of substantially U-shaped cut lines are formed on the metal sheet, and the tongue piece formed based on each of the cut lines is selectively bent toward one of the surfaces of the metal sheet. A fin protruding in the direction is formed, and a portion surrounded by the cut is opened to form a hole provided with the fin.

More specifically, the present invention relates to a method for producing a finned perforated metal plate in which at least a finned hole is formed in a long flat metal thin plate, wherein a substantially U-shaped cut is formed on the metal thin plate. A perforation roller provided on a peripheral surface with a plurality of protruding blades capable of forming a line and bending outwardly a tongue piece formed based on the cut line; A receiving surface provided with a plurality of grooves formed on the outer peripheral surface thereof, the protrusions being formed on the punching roller, and a plurality of grooves for temporarily storing the tongue pieces bent by the protrusions; A long, flat, strip-shaped metal sheet is continuously supplied between the rollers, and a substantially U-shaped cut line is formed in the metal sheet by the protruding blade material. The tongue piece is bent outward to form a fin, and a portion surrounded by the cut line is opened to form a hole having the fin. Alternatively, a substantially U-shaped cut line is formed on the outer peripheral surface of one of the pair of rollers arranged to face each other, and the tongue piece formed based on the cut line is bent outward. And a plurality of protruding blades formed on the outer peripheral surface of the roller, and a plurality of protruding blades formed on the outer peripheral surface of the other roller and the tongue piece bent by the protruding blade material. A plurality of groove portions that can temporarily accommodate the roller, a plurality of the protruding blades are formed on the outer peripheral surface of the other roller in a band shape, and the one roller is formed on the outer peripheral surface in a band shape. A plurality of grooves for temporarily storing the tongue piece bent by the protruding blade material and the protruding blade material formed between the pair of rollers; The flat blade-shaped sheet metal is continuously supplied, and the protruding blade is provided. A substantially U-shaped cut line is formed in the metal thin plate with the material, and the tongue piece formed based on the cut line is bent outward to form a fin, and is surrounded by the cut line. The part is opened to form a hole with the fin. The exhaust gas purifying device component of the present invention includes a hollow body having a mesh-like cross section formed by spirally winding the finned perforated metal plate of the present invention in a casing. It is characterized by.

Further, the method for producing a component for an exhaust gas purifying apparatus of the present invention is directed to an exhaust gas purifying apparatus comprising: a hollow body having a mesh-shaped cross section formed by spirally winding a finned porous metal plate in a casing. A method for manufacturing a part, comprising: winding the finned porous metal plate according to claim 1 or 2 into a spiral shape having a diameter smaller than the inner diameter of the casing; and in this state, the winding inside the casing. By loosening the The fin-formed porous metal plate is formed in the casing as a hollow body having a mesh-like cross section while the tip of the fin formed on the fin-shaped porous metal plate is in contact with a part of the opposed fin-shaped porous metal plate. It is characterized by being fitted.

Further, a method for manufacturing a component for an exhaust gas purifying apparatus, comprising a hollow body having a mesh-shaped cross section formed by spirally winding a finned porous metal plate in a casing, wherein The finned perforated metal plate according to claim 1 or 2 is spirally wound, and at least a part of the finned perforated metal plate or a part of Z and the hollow body having the mesh cross section is joined. In this way, a hollow body having a cylindrical mesh cross section is formed. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is an enlarged perspective view showing a main part of a first embodiment of a finned porous metal plate 1 of the present invention. FIG. 2 is an enlarged sectional view showing a main part of the finned perforated metal plate 1 of FIG. FIG. 3 is a plan view of a main part showing a configuration of the finned perforated metal plate 1 of FIG. FIG. 4 is an enlarged explanatory view showing the connecting side of the fin in the finned hole. FIG. 5 is an enlarged sectional view showing a main part of a second embodiment of a finned porous metal plate of the present invention. FIG. 6 is an enlarged perspective view of a finned hole and a finless hole. FIG. 7 is an enlarged explanatory view showing the positional relationship between the protruding blade material of the punching roller, the groove of the receiving port, and the finned porous metal plate used in the method for manufacturing the finned porous metal plate of the present invention. FIG. 8 is a conceptual diagram of a main part of a perforating roller and a receiving port used in the method for producing the finned perforated metal plate of FIG. FIG. 9 is a conceptual diagram of a main part of a punching roller and a receiving roller used in the method for manufacturing the finned perforated metal plate of FIG. FIG. 10 is an enlarged view showing a configuration of one cross section of an aired body having a mesh cross section using the finned perforated metal plate of FIG. FIG. 11 is an enlarged view showing a configuration in one section of a hollow body having a mesh-shaped section using the finned perforated metal plate of FIG. BEST MODE FOR CARRYING OUT THE INVENTION

First, an embodiment of a finned porous metal plate of the present invention will be described.

In the first embodiment of the finned perforated metal plate of the present invention, a thin metal plate (including a metal foil; the same applies hereinafter) formed into a long flat band is provided with a fin protruding to one side thereof. Holes (hereinafter referred to as “finned holes”). With the fins, the spacing can be freely adjusted according to the fin length. As the metal used for the metal sheet, a common stainless steel expressed by iron-nickel-chromium alloy, iron-nickel alloy, iron-chromium-aluminum alloy, or iron-chromium alloy can be applied. Here, formation refers to, for example, when only finned holes are arranged and formed with regularity, they are aligned and formed with some regularity in relation to holes without fins (hereinafter referred to as “finless holes”). In addition to the case where it is formed, it also includes the case where it is formed randomly so as not to have regularity.

Since a large number of holes, such as finned holes and finless holes, are provided in this way, when used as an exhaust gas purification device, the warm-up operation is short.

The finned perforated metal plate 1 of the first embodiment shown in FIGS. 1 to 3 is later spirally wound and fitted into a part for an exhaust gas purifying device described later. The finned holes 3 and the finless holes 4 are alternately arranged in the winding direction of the hollow body 5 having a mesh-like cross section (hereinafter referred to as the hollow body 5; see FIG. 10). It is configured. As shown in FIG. 3, this row L is formed by adjusting a plurality of finned holes 3 or finless holes 4 formed in the adjacent row L so that they are not adjacent to each other, and a plurality of rows are brought close to each other. And the width R is configured. A plurality of the widths R are formed on the flat strip-shaped metal sheet 2 at predetermined intervals. Here, the finless hole 4 in the present embodiment is a thin line-shaped hole portion 6 formed so as to be orthogonal to the alignment direction of the holes. The shape of the hole 7 of the finned hole 3 is substantially rectangular, and the substantially rectangular hole 7 has a fin 8 protruding on the same surface side of the thin metal plate 2. The fin 8 is a flat piece. In the present embodiment, of the four sides constituting the hole 7, one of the four sides constituting the hole 7 is formed on one side of the upstream side in the winding direction. It is installed continuously.

The connecting side of the fin 8 is not limited to the upstream side in the winding direction of the hole 7 but may be one side on the downstream side. Further, for example, as shown in FIG. 4, a hole 6 provided with a fin 8 continuously provided on one side on the upstream side in the winding direction, and a hole provided with a fin 8 continuously provided on one side on the downstream side in the winding direction. The parts 7 may be regularly arranged on the same column L. Furthermore, the arrangement of the various holes in each row L may be different.

In the second embodiment relating to the finned perforated metal plate 1, the finned holes 3 protruding to any surface of the long flat metal thin plate 2 are aligned.

As described above, also in the present embodiment, the layout IJ of the finned hole 3 and the finless hole 4, and in the finned hole 3, the connecting side of the fin 8 is set as one side on the upstream side of the hole 7. Arrangement of the finned holes 3A and the finned holes 3B as one side on the downstream side, and the fins 8 are projected to one side of the thin metal plate 2 to the finned holes 3C and to the other side. The arrangement of the finned holes 3D may have regularity or may be random.

In FIG. 5, as the finned perforated metal plate 1 of the second embodiment, the finned holes 3 and the finless holes 4 are alternately formed in the winding direction of the hollow body 5, and The finned hole 3 has a connecting side of the fin 8 as one side on the upstream side of the hole 7, and the fin 8 is projected on one surface of the thin metal plate 2 into the finned hole 3 </ b> C and on the other surface. A finned perforated metal plate 1 in which finned holes 3D are alternately arranged.

Next, a method for manufacturing the finned porous metal plate 1 of the present invention will be described.

Basically, as shown in FIG. 6, the finless hole 4 formed in the finned porous metal plate 1 in the two embodiments described above is a long flat band-shaped metal. A thin line-shaped hole 6 is drilled on the thin plate 2. Further, the finned hole 3 forms a substantially U-shaped cut line, and an imaginary line connecting the tongue pieces 9 formed based on the respective cut lines to both ends of the cut line at the shortest distance. A portion (indicated by a dashed line in FIG. 6) is selectively bent toward one of the surfaces of the metal sheet 2 to form fins 8 protruding in the bending direction and surrounded by the cut lines. The opened portion is opened to form a hole 7 of the finned hole 3.

More specifically, as shown in FIGS. 7 and 8, the substantially U-shaped cut line is formed, and the tongue piece 9 formed based on the cut line is placed at the shortest distance between both ends of the cut line. A protruding blade material 1 1 (hereinafter referred to as a finned hole blade material 1 1 A) that can be bent outward with the imaginary line portion to be connected to the metal sheet 2 on the side opposite to the side where the perforating rollers 10 are provided, And a protruding blade material 11 (hereinafter, referred to as a finless hole blade material 1 1 B) capable of drilling a thin line-shaped hole 6 is formed by arranging the holes and the width R on the same row L. The punching roller 10 provided on the outer peripheral surface according to the above, the finned hole blade 11A formed on the punching roller 10 opposing the punching roller 10 and the projection-shaped blade 11 are folded. A plurality of grooves 1 for temporarily accommodating the bent tongue piece 9 and the blade material 1 1 B for a finless hole A long flat band-shaped thin metal plate 2 is continuously supplied between a receiving roller 13 provided on the outer peripheral surface of the roller 2 and the rollers 10 and 13 are driven to rotate. Then, a finless hole 4 is formed in the metal sheet 2 using the finless hole blade material 11B. Further, a substantially U-shaped cut line is formed in the metal thin plate 2 using the finned hole blade material 11 A, and the tongue piece 9 formed based on the cut line is attached to the metal thin plate 2. The fins 8 are formed by bending the punching roller 10 to the outside, and the holes 7 are formed by opening the portions surrounded by the cut lines.

By this manufacturing method, the finned multi-hole metal plate 1 in which the fins 8 of the finned holes 3 are projected on the same surface side of the thin metal plate 2 as shown in the first embodiment of the finned porous metal plate 1 described above is simplified. And it can be formed efficiently. The finned perforated metal plate 1 shown in the second embodiment of the finned perforated metal plate 1 and having the fins 8 of the finned holes 3 protruding from both sides of the thin metal plate 2 is manufactured as follows. can do.

That is, as shown in FIG. 9, a substantially U-shaped cut line is formed on the outer peripheral surface of one of the pair of rollers 14A and 14B arranged opposite to each other. A finned hole that can bend the tongue piece 9 formed based on the cut line to the outside of the roller 14A of the thin metal plate 2 with an imaginary line portion connecting both ends of the cut line at the shortest distance. The blade material 11A and the blade material 11B for a finless hole capable of drilling a thin line-shaped through-hole are arranged in the same row L with the arrangement of the holes 6 and 7 and the width R described above. On the outer peripheral surface, and are bent by the respective protruding blades 11 A, 11 B formed on the outer peripheral surface of the other roller 14 B and the blade material 11 A for the finned hole. Further, a plurality of grooves 12 for temporarily storing the tongue piece 9 is formed.

In addition, the two projecting blades 11A and 11B are formed on the outer peripheral surface of the other roller 14B, and are formed on the outer peripheral surface of the one roller 11A on the outer peripheral surface. A plurality of grooves 12 are formed to temporarily accommodate the tongue piece 9 bent by the bi-projecting blades 11A, 11B and the bladed hole blade 11A.

It should be noted that the finless hole blade member 11B may be omitted from any one of the rollers 14A and 14B.

Then, a long flat band-shaped thin metal plate 2 is continuously supplied between the pair of rollers 14A and 14B, and the rollers 14A and 14B are driven to rotate. Then, the finless hole 4 is drilled in the metal thin plate 2 using the finless hole blade material 1 1B, and a substantially U-shaped metal thin plate 2 is formed by the finned hole blade material 11A. A cut line is formed, and the tongue piece 9 formed based on the cut line is bent outward of the thin metal plate 2 on the side where the roller on which the protruding blade material 11 is formed is disposed. To form fins 8 and to open a portion surrounded by the cut line to form a hole. According to this manufacturing method, the finned perforated metal plate 1 in which the fins 8 of the finned holes 3 protrude from both sides of the thin metal plate 2 as shown in the second embodiment of the finned perforated metal plate 1 described above can be simply and efficiently manufactured. Can be formed.

Next, the exhaust gas purifying device component will be described with reference to FIGS. 10 and 11. The exhaust gas purifying device component 15 of the present invention is mainly used for exhaust gas discharged from an internal combustion engine such as an automobile engine. It is a device for purification, which is used as a carrier or filter. The basic configuration is such that a cylindrical hollow body 5 is fitted into a cylindrical casing 16 內 made of a metal plate as described in the conventional example.

The exhaust gas purifying device part 15 of the present invention is configured so as to have a hollow body 5 formed in the casing 16 using the finned porous metal plate 1 manufactured by the above-described manufacturing method. .

Next, two embodiments will be described.

In the first embodiment, as shown in FIG. 10, the fins 8 of the finned holes 3 of the finned perforated metal plate 1 shown in the first embodiment protrude to the same surface side of the thin metal plate 2 as shown in FIG. A cylindrical hollow body 5 formed by spirally winding only the attached perforated metal plate 1 is used.

The hollow body 5 is formed in a spiral shape with the main body portion of the finned porous metal plate 1 as a wall, and has an exhaust gas flow path 17 having openings on the upstream side and the downstream side in the exhaust gas discharge direction of the internal combustion engine. Have. In the exhaust gas flow path 17, the fins 8 of the plurality of finned holes 3 formed in the finned multi-hole metal plate 1 protrude so as to divide the spiral exhaust gas flow path 17. ing.

In the second embodiment, as shown in FIG. 11, the fins 8 of the finned holes 3 shown in the second embodiment of the finned perforated metal plate 1 project from both sides of the thin metal plate 2 as shown in the second embodiment. The hollow body 5 formed by spirally winding only the finned perforated metal plate 1 It was used.

The hollow body 5 is formed in a spiral shape with the main body portion of the finned porous metal plate 1 as a wall, and has an exhaust gas flow path 17 having openings on the upstream side and the downstream side in the exhaust gas discharge direction of the internal combustion engine. Have. As in the first embodiment, the exhaust gas flow path 17 is sandwiched by a wall composed of a main body of a thin metal plate 2 that is spirally wound around the flow path, and a fin is provided in this path. The fins 8 of the plurality of finned holes 3 formed in the porous metal plate 1 protrude from both walls constituting the exhaust gas flow path 17 so as to divide the spiral exhaust gas flow path 17, are doing.

In the exhaust gas purifying device component 15 configured as described above, the exhaust gas flowing into the exhaust gas purifying device component 15 from the exhaust gas upstream side of the exhaust gas of the internal combustion engine flows in a spiral path. The wound metal plate 1 passes through the passageway in various ways by the wall composed of the main body portion of the finned perforated metal plate 1 and the fins 8 located in the exhaust gas flow passage 17. From the opening of the finless hole 4 or the finned hole 3 formed in the finned porous metal plate 1, the passage of the finned porous metal plate 1 is changed to the adjacent exhaust gas flow passage 17 via the finned multihole metal plate 1. In the meantime, it passes through the aerospace body 5 and escapes downstream in the exhaust gas discharge direction. It goes without saying that the exhaust gas of the internal combustion engine can carry or filter out soot, for example, due to incomplete combustion when passing through the exhaust gas purification device part 15. ,.

Next, a method for producing the exhaust gas purification device component 15 of the present invention will be described. First, the finned porous metal plate 1 is slightly tightly wound into a spiral shape smaller than the inner diameter of the casing 16 before being fitted into the casing 16. Then, the tight winding is unwound at a predetermined position in the casing 16 to be in a free state, and is firmly positioned in the casing 16 to be in a fitted state.

The degree of winding of the finned perforated metal plate 1 at that time is determined in the casing 16. When released and in a free state, the fin 8 is wound so that the tip portion of the fin 8 comes into contact with the opposite back surface of the thin metal plate 2 due to its elastic force.

Further, an end portion located on the outer periphery of the wound finned perforated metal plate 1 is joined in advance to a metal sheet 2 located on the inner side by one turn to form a hollow body 5, and this hollow body 5 is formed into a casing. It may be fitted into 16.

In this way, when the hollow body 5 is formed by winding only one finned perforated metal plate 1 as compared with the case where a stack of two different metal plates is spirally wound. Thus, the winding misalignment problem at the time of winding, which was one of the conventional problems, can be further solved. In other words, the front and back fins can prevent the aerial body 5 from becoming bamboo shoot-like.

Further, using the finned perforated metal plate 1 shown in the second embodiment of the aforementioned finned perforated metal plate 1 in which the fins 8 of the finned holes 3 are protruded to both sides of the thin metal plate 2, In the case of forming the fins 5, some of the fins 8 projecting from the adjacent multi-hole metal plate 1 with fins into the same exhaust gas flow path 17 in the wound state and biting together with the tips thereof By doing so, the problem of winding misalignment during winding, which was one of the conventional problems, can be completely prevented. The hollow body 5 is provided on both sides in the winding direction of the finned perforated metal plate 1 at an appropriate interval to keep a constant distance between the adjacent finned perforated metal plates 1 in a wound state. When the joining projection is formed, and the edge located on the outer periphery of the wound finned perforated metal plate 1 is previously joined to the metal sheet 2 located on the inner side by one turn, the joining projection is formed. It is also possible to join even the middle part of the spiral with a part. Furthermore, depending on the joining method, for example, in the case of bonding, it is possible to directly join the tip of the fin 8 to the opposed finned porous metal plate 1.

When the hollow body 5 is fitted into the casing 16, the space between at least a part of the thin metal plate 2 and the inner surface of the casing 16 is formed by a method such as welding or welding. To It is desirable to join more. In particular, when the edge located at the outer periphery of the hollow body 5 is joined once to the metal sheet 2 located inside the circumference before being fitted into the casing 16, the metal sheet 2 is free due to the joining. Since the force to expand outward as much as possible is suppressed, it is recommended that the aerial body 5 and the inner surface of the casing 16 be brought into close contact with each other by the above-mentioned bonding, welding or the like.

Such exhaust gas purifying parts 15 use a metal foil, which is a flat foil and a corrugated foil, which are stacked and spirally formed. Since only one porous metal sheet 2 is required for the metal plate, the material cost can be reduced and the cost can be reduced. In addition, since the finned porous metal plate 1 used for the hollow body 5 of the present embodiment is a flat band-shaped thin plate, it has an advantage that the winding is chewy and the manufacturing cost in the manufacturing process can be reduced. Become.

The finned perforated metal plate 1 shown in the second embodiment of the finned perforated metal plate 1 is formed by superposing a long flat metal thin plate 2 on a long flat band-shaped metal plate 2 and spirally winding the hollow metal plate 5. It is also possible to form In this case, the exhaust gas passing through the air-filled body 5 passes through the wall composed of the main body portion of the finned porous metal plate 1 and the exhaust gas flow passage 17 in the yard sandwiched by the long flat strip-shaped thin metal plates 2. The fins 8 pass through the passage route while being branched in various ways by the fins 8, and some of the exhaust gas passes through the openings of the finless holes 4 or the finned holes 3 formed in the finned porous metal plate 1. While passing through the mesh of the aerated body 5 while changing its passing path into the adjacent exhaust gas flow path 17 across the finned porous metal plate 1 from the part, the exhaust gas is discharged in the downstream direction It will escape.

Note that the present invention is not limited to the above-described embodiment, and various modifications can be made as necessary. Basically, it is not necessary to attach it, but it is okay to perform it on a part of the end face if necessary. A known catalyst can be used. For example, a catalyst in which a catalyst such as platinum or palladium is supported on a support layer made of activated alumina can be used. Industrial applicability

As described above, the finned perforated metal plate of the present invention is optimal as a metal plate constituting a hollow body having a mesh-shaped cross section disposed in a component for an exhaust gas purification device. In other words, the exhaust gas purification device component having a hollow body having a mesh-like cross-section using the porous substrate forms an exhaust gas flow path in the main body of the finned porous metal plate, and has a hole having fins. By arranging the fins so as to protrude into the exhaust gas flow path, a wide variety of passage paths in the exhaust gas flow path including the path passing through the holes can be provided. Exhaust gas can be purified by increasing the contact area between the airborne body having the gas and the exhaust gas. The exhaust gas purifying device component having such a configuration can basically form a hollow body having a mesh-shaped cross-section by using the single finned perforated metal plate. It will be cheaper.

According to the method for manufacturing a finned porous metal plate of the present invention, a finned perforated metal plate having fins with holes projecting to the same surface side of a thin metal plate, or a fin having fins projecting to both surface sides is provided. The perforated metal plate can be formed easily and efficiently. According to the method for manufacturing an exhaust gas purifying device component of the present invention, the finned porous metal plate used for the hollow body having a mesh-shaped cross section to be fitted into the exhaust gas purifying device component is a single flat metal thin plate. Therefore, the winding is also smooth, so that the manufacturing cost in the manufacturing process can be reduced, and the conventional problem of winding misalignment can be solved.

As described above, the present invention provides a perforated metal plate, a method for manufacturing the perforated metal plate, and a component for an exhaust gas purifying device using the perforated metal plate, which are optimal for forming an air having a mesh-like cross section, which is a component for an exhaust gas purification device. In addition, the production method can be provided as being economical and easy.

Claims

The scope of the claims

1. A finned perforated metal plate in which a plurality of holes are formed in a long flat band-shaped thin metal plate, wherein the holes are formed by bending fins from the thin metal plate to one side. Finned perforated metal plate.

2. A finned perforated metal plate having a plurality of holes formed in a long flat band-shaped thin metal plate, wherein the holes are formed by bending the fins from the thin metal plate to any surface side. A finned perforated metal plate characterized by the following.

3. A method for producing a finned perforated metal plate having at least a finned hole formed in a long flat band-shaped metal plate, wherein a plurality of substantially U-shaped cut lines are formed on the metal plate. The tongue piece formed based on each of the cut lines is selectively bent toward one of the surfaces of the metal sheet to form a fin projecting in the bending direction, and the cut line is formed. A method for producing a finned perforated metal plate, characterized by forming a hole provided with the vine by opening a portion surrounded by the fin.

4. A method for producing a finned perforated metal plate having at least a finned hole formed in a long flat band-shaped metal plate, wherein a substantially U-shaped cut line is formed on the metal plate. A perforation roller provided on the outer peripheral surface with a plurality of protruding blades capable of bending a tongue piece formed outward based on the cut line, and facing the perforation roller, and formed on the perforation roller. A long flat surface between the protruding blade material and a receiving roller provided on the outer peripheral surface with a plurality of grooves provided on the outer peripheral surface for temporarily storing the tongue piece bent by the protruding blade material. A strip-shaped metal sheet is continuously supplied, a substantially U-shaped cut line is formed in the metal sheet by the protruding blade material, and the tongue piece formed based on the cut line is bent outward. To form fins, and surrounded by the score lines Minute by opening method finned perforated metal plate you and forming a hole with the fins.

5. At least a hole with fins was formed in a long flat strip-shaped thin metal plate A method of manufacturing a finned porous metal plate, comprising: forming a substantially U-shaped cut line on an outer peripheral surface of one of a pair of rollers arranged opposite to each other and forming the cut line based on the cut line. A plurality of protruding blades that can bend the formed tongue piece outward, and a protruding blade formed on the outer peripheral surface of the other roller in a belt shape, and the protruding blade formed on the outer peripheral surface of the other roller. Forming a plurality of grooves for temporarily storing the tongue piece bent by the material, forming a plurality of the protruding blades in a belt shape on the outer peripheral surface of the other roller; A plurality of grooves formed on the outer surface of the roller so as to temporarily accommodate the protruding blade formed on the outer peripheral surface of the one roller and the tongue piece bent by the protruding blade; A long, flat, strip-shaped metal thin film is placed between the pair of rollers. Is continuously supplied, a substantially u-shaped cut line is formed in the metal sheet by the protruding blade material, and the tongue piece formed based on the cut line is bent outward to form a fin. A method for producing a finned porous metal plate, comprising: forming a hole provided with the fin; and opening a portion surrounded by the score line.

6. A hollow body having a mesh-shaped cross section formed by spirally winding the finned porous metal plate according to claim 1 or 2 is provided in a casing. For exhaust gas purification equipment.

7. A method for manufacturing a component for an exhaust gas purifying apparatus, comprising a casing having an air body having a mesh-like cross section formed by spirally winding a finned porous metal plate in a casing, A component for an exhaust gas purification device, comprising: winding the finned porous metal plate according to claim 1 or 2 in a spiral shape having a diameter smaller than the inner diameter of the casing, and then fitting the inside of the casing. Production method.

8. A method for manufacturing a component for an exhaust gas purifying apparatus, comprising a hollow body having a mesh-like cross section formed by spirally winding a finned perforated metal plate in a casing, the method comprising: 3. The finned porous metal plate according to claim 1 or 2 is spirally wound, and at least a part of the finned porous metal plate or Z and the mesh shape A method of manufacturing a component for an exhaust gas purifying apparatus, comprising forming a hollow body having a cylindrical mesh cross section by joining a part of a hollow body having a cross section.