JP2010115705A - Method of manufacturing perforated plate and perforated plate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of manufacturing a perforated plate which is provided with holes having hole axes perpendicular to the plate surface. <P>SOLUTION: The method of manufacturing the perforated plate comprises: a cutting step where a plurality of cuts are formed in a flat plate 5 by pressing a press forming part 42 to the flat plate 5 which is intermittently supplied toward a lower cutter 50 supporting the flat plate at a surface on one side of the flat plate 5 from the side of the other surface of the flat plate 5; a press-working step where a shaped article having a plurality of oblique holes is formed by applying press working to the plurality of the portions of the cuts; and a compressing step where the perforated plate 1 having the plurality of the holes having the hole axis perpendicular to the planar direction of the shaped article by applying compression forming to the shaped article along the direction of the hole axes of the plurality of the oblique holes of the shaped article. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a method for manufacturing a porous plate and a porous plate. In particular, the present invention relates to a method for producing a perforated plate having fine holes and a perforated plate.

  As a conventional expanded metal, it is flattened on an expanded metal that is formed into a mesh shape by forming a staggered cut on a metal plate with an expanding machine while forming it into a rhombus or turtle shell shape. A processed expanded metal is known (for example, see Non-Patent Document 1).

  The expanded metal according to Non-Patent Document 1 can be used for applications where a flat surface is required because the protrusions of the expanded metal that has not been flattened are processed flat and have a flat surface.

Suzuki Technos Co., Ltd., “Expanded Metal”, [Search July 28, 2008], Internet (URL: http://www.suzuki-tkns.co.jp/product/expanded/index.html)

  However, since the expanded metal described in Non-Patent Document 1 only rolls the expanded metal that has not been flattened, the hole axis of the hole of the expanded metal can be made perpendicular to the plate surface. Therefore, it is difficult to expand the use of the perforated plate.

  Therefore, the objective of this invention is providing the manufacturing method of a perforated panel provided with the hole which has a hole axis | shaft perpendicular | vertical with respect to a plate surface, and a perforated panel.

  In order to achieve the above-mentioned object, the present invention presses a press-formed portion from the other surface side of the flat plate to the intermittently supplied flat plate toward the lower blade that supports the flat plate on one surface of the flat plate. A cutting process for forming a plurality of cuts in the flat plate, a pressing process for forming a molded body having a plurality of slant holes by pressing the plurality of cut parts, and a plurality of slant holes in the molded body A method for producing a porous plate comprising: a compression step of compressing a molded body along a direction of the hole axis to form a porous plate having a plurality of holes having a hole axis perpendicular to the planar direction of the molded body. Provided.

  Further, in the method for manufacturing the perforated plate, the lower blade has a cutting blade that forms a plurality of cuts, and a processing die portion that is provided adjacent to the cutting blades and presses the plurality of cuts. The cutting process forms a plurality of cuts by pressing the press-molded portion toward the cutting blade, and the press working step is performed by pressing the press-molded portion against the work mold portion. You may form a molded object simultaneously.

  Moreover, the manufacturing method of the said perforated panel may further be equipped with the bending process process which bends a molded object, and a compression process may form a perforated panel from the molded object to which the bending process was performed. In addition, the cutting step is supplied while being inclined with respect to the longitudinal direction of the lower blade, and a plurality of cuts are formed on the flat plate supplied at a feed stroke synchronized with the cycle in which the press-formed portion is pressed against the flat plate. Also good. Further, in the compression step, when the interval between one hole of the plurality of holes and another hole adjacent to the one hole is LW, and the plate thickness of the porous plate is W, the value of LW is equal to or greater than the value of W. A perforated plate may be formed.

  Further, in order to achieve the above object, the present invention pushes the press-molded portion from the other surface side of the flat plate to the intermittently supplied flat plate toward the lower blade supporting the flat plate on one surface of the flat plate. A cutting process for forming a plurality of cuts on the flat plate by applying, a pressing process for forming a molded body having a plurality of oblique holes by pressing the plurality of cuts, and pressing of the press forming part By pressing the smooth compression press part against the molded body from a direction perpendicular to the direction, the molded body is compression-molded along the direction of the hole axis of the plurality of oblique holes of the molded body, and the planar direction of the molded body is There is provided a method for producing a perforated plate comprising a compression step of forming a perforated plate having a plurality of holes having a hole axis perpendicular to the hole axis.

  In the method for producing the perforated plate, in the compression step, the smooth compression press portion may be pressed toward the side surface of the lower blade.

  In order to achieve the above object, the present invention comprises a plurality of holes surrounded by a plurality of strands and a core surface formed by the surfaces of the plurality of strands, and each of the plurality of holes has a hole axis. However, a perforated plate that is perpendicular to the core surface is provided.

  In the porous plate, when the interval between one hole of the plurality of holes and another hole adjacent to the one hole is LW, and the plate thickness of the porous plate is W, the value of LW is equal to or greater than the value of W. There may be.

  According to the perforated plate manufacturing method and perforated plate of the present invention, it is possible to provide a perforated plate manufacturing method and a perforated plate having holes having a hole axis perpendicular to the plate surface.

(A) is a top view of a part of the porous plate according to the first embodiment, and (b) is an aa cross-sectional view of (a). (A) is the elements on larger scale of the hole of the perforated panel which concerns on 1st Embodiment, (b) is bb sectional drawing of (a). It is a schematic diagram of a press top dead center position in a manufacturing method of a perforated panel concerning a 1st embodiment. It is a schematic diagram of a press bottom dead center position in the manufacturing method of the perforated panel concerning a 1st embodiment. It is a schematic diagram of the flow of the raw material used for manufacture of the perforated panel which concerns on 1st Embodiment. It is a perspective view of the lower blade used for manufacture of the perforated panel which concerns on 1st Embodiment. It is a schematic diagram of the perforated panel manufacturing apparatus concerning a 2nd embodiment. (A) is a figure which shows each site | part of the molded object before a cutting process and a press work process in Example 1 and Examples 2 thru | or 7, (a) is Example 1 and Example In 2 thru | or 7, it is a figure which shows each site | part of the molded object after a cutting process and a press work process. It is a figure which shows the comparison result of the aperture ratio and hole axis inclination of the porous plate which concerns on Example 1, and the expanded metal which concerns on the comparative examples 1 and 2. FIG. It is a figure which shows the comparison result of the aperture ratio and hole axis inclination of the porous plate which concerns on Example 2, and the expanded metal which concerns on the comparative examples 3 and 4. FIG. It is a figure which shows the comparison result of the aperture ratio and hole axis inclination of the porous plate which concerns on Example 3, and the porous plate which concerns on the reference examples 1 and 2. FIG. (A) is a schematic diagram of the porous plate according to Reference Example 1, (b) is a schematic diagram of the porous plate according to Reference Example 2, and (c) is a view of the fine pore metal according to Example 3. FIG.

[First Embodiment]
Fig.1 (a) shows the upper surface of a part of the porous plate which concerns on the 1st Embodiment of this invention, FIG.1 (b) shows the aa cross section of Fig.1 (a).

(Structure of perforated plate 1)
The perforated plate 1 according to the first embodiment of the present invention includes a plurality of strands 15 and holes 10 formed so as to be surrounded by the plurality of strands 15. A plurality of strands 15 forming one hole 10 are continuously integrated. Then, the core surface 20 and the core surface 25 facing the core surface 20 are formed by the surfaces of the plurality of strands 15. Further, in the hole 10 according to the first embodiment, the hole axis 10 a of the hole 10 is formed perpendicular to the core surface 20 and the core surface 25. That is, the normal line of the core surface 20 and the normal line of the core surface 25 coincide with the axial direction of the hole axis 10a.

  The plurality of holes 10 provided in the perforated plate 1 are provided by repeating an arrangement in which six other holes 10 are adjacent to one hole 10. Specifically, the plurality of holes 10 are provided in a honeycomb shape. Each of the plurality of holes 10 is formed in a substantially hexagonal shape (or turtle shell shape) when viewed from above. In the modification of the present embodiment, each of the plurality of holes 10 can be formed in a substantially rhombus shape when viewed from above. The perforated plate 1 is made of a metal material such as iron (Fe), aluminum (Al), copper (Cu), an alloy material including at least one selected from these metal materials, or an alloy steel such as SUS. Formed from.

  Fig.2 (a) shows the elements on larger scale of the hole of the perforated panel which concerns on the 1st Embodiment of this invention, FIG.2 (b) shows the bb cross section of Fig.2 (a).

  In FIG. 2A, the interval between one hole 10 and another hole adjacent to one hole 10 (hereinafter referred to as “hole pitch in the first direction” or “direction along the width of the cutting blade 52, which will be described later). LW) in some cases. The plate thickness of the perforated plate 1 is W. In this case, in the porous plate 1 according to the present embodiment, the value of LW is formed to be equal to or greater than the value of W. In FIG. 2B, T is the thickness of a flat plate that is a raw material of the porous plate 1. Also, SW is the hole pitch in the second direction, that is, the hole pitch in the direction perpendicular to the first direction (the direction along the width of the cutting blade 52). B represents the bond length.

  Here, the porous plate 1 according to the present embodiment has, for example, a shape in which the value of LW is equal to or greater than the value of W. For example, the porous plate 1 having a LW / W ratio LW / W of 3 or less, preferably 1 or more and 3 or less can be obtained. In addition, it can also be set as the porous plate 1 which made the value of LW / W the value over three. As an example, a flat plate having a thickness T of 1 mm or less can be used for the purpose of making the thickness T equal to or less than the size of the hole 10.

(Method for producing perforated plate 1)
3A and 3B show the outline of the manufacturing method of the porous plate according to the first embodiment of the present invention, and FIG. 3C shows the outline of the flow of raw materials used for manufacturing the porous plate according to the first embodiment. FIG. 3D is a perspective view of the lower blade used for manufacturing the perforated plate according to the first embodiment.

  Specifically, FIG. 3A shows the outline of the press top dead center position immediately before the press working step. FIG. 3B shows a molded body in a state immediately after the press working process at the press bottom dead center position and a perforated plate manufactured through a compression process.

  As shown in FIG. 3A, the perforated plate manufacturing apparatus 3 used for manufacturing the perforated plate 1 according to the present embodiment includes an oblique supply roll 30 that supplies the perforated plate 1 as a raw material of the perforated plate 1 to the perforated plate manufacturing apparatus 3. , A press forming part 42 and a lower blade 50 for cutting and pressing the supplied flat plate 5, a bending part 60 and a bending jig 65 for bending the formed body subjected to the cutting and pressing, A smooth compression press unit 44 that performs compression molding on the molded body that has been subjected to the bending process, and a frame feed guide jig 70 that supplies the molded body that has been subjected to the bending process to the smooth compression press unit 44 are provided. Further, the press molding part 42 and the smooth compression press part 44 are held by the die set upper plate 40, and the lower blade 50 and the bending molding part 60 are installed in the die set lower part 45.

  In the present embodiment, the press molding unit 42 and the smooth compression press unit 44 are in the normal direction of the surface of the flat plate 5 supplied to the perforated plate manufacturing apparatus 3 according to the operation of the die set upper plate 40, that is, in the vertical direction. To work. In particular, the press forming unit 42 according to the present embodiment operates only in the vertical direction, and is perpendicular to both the supply direction of the flat plate 5 to the perforated plate manufacturing apparatus 3 and the vertical direction (the surface of FIG. 3A). Do not operate in the normal direction.

  The perforated plate manufacturing apparatus 3 performs cutting, pressing, and smooth compression processing on the flat plate 5 by pressing the die set upper plate 40 against the die set lower portion 45 at high speed and intermittently. A porous plate 1 (for example, a fine porous plate) according to the present embodiment is manufactured. This will be specifically described below. In the following description, the perforated plate 1 according to the present embodiment may be referred to as “fine pore metal”.

(Flat plate supply process)
First, a flat plate 5 (for example, a solid flat plate coil) that is a material of the perforated plate 1 is tilted with respect to the longitudinal direction of the lower blade 50 via the oblique supply roll 30, and directed toward the press forming portion 42 and the lower blade 50. Supply intermittently. Specifically, as shown in FIG. 3C, the longitudinal direction of the flat plate 5 is inclined by an angle α with respect to a cutting position 100 where a plurality of cuts are formed by a press forming portion 42 and a lower blade 50 described later. Is supplied to the perforated plate manufacturing apparatus 3. The flat plate 5 is supplied to the perforated plate manufacturing apparatus 3 along the supply direction 120 inclined by the angle α with respect to the cutting position 100 (FIG. 3C). Further, the flat plate 5 is supplied to the perforated plate manufacturing apparatus 3 with a feed stroke synchronized with a cycle (hereinafter referred to as “cutting cycle”) in which the press-molded portion 42 is pressed against one surface of the flat plate 5.

  Here, the angle α is an angle calculated from the following equation.

  Moreover, the speed | rate (feeding speed) which supplies the flat plate 5 to the perforated-plate manufacturing apparatus 3 shall be the speed prescribed | regulated by the following formula | equation per 1 stroke of a press. That is, in this embodiment, the feed rate is synchronized with the cutting cycle. The press indicates that the press molding portion 42 is pressed against the lower blade 50 and a part of the flat plate 5 is cut. When the press molding portion 42 is pressed against the lower blade 50, the perforated plate of the flat plate 5 is used. The feed speed to the manufacturing apparatus 3 is substantially zero, and when the press forming portion 42 is separated from the lower blade 50, the feed speed of the flat plate 5 to the perforated plate manufacturing apparatus 3 is a speed defined by the following equation.

  In “Equation 2”, “W” is a feed width per stroke of the flat plate 5 when the flat plate 5 is supplied to the perforated plate manufacturing apparatus 3. That is, the flat plate 5 has a cut for each “W” as shown in FIG. 3A, and “W” corresponds to the step width of the flat plate 5.

(Cutting process and pressing process)
Next, the flat plate 5 supplied between the press forming part 42 and the lower blade 50 is supported by the lower blade 50 on one surface of the flat plate 5, and the press forming unit 42 presses from the other surface side of the flat plate 5. Applied (FIG. 3B). Thereby, a several cut | interruption is formed in the flat plate 5 (cutting process). And the press molding part 42 performs a press process with respect to a some cut simultaneously with formation of a some cut, and forms the molded object which has a some diagonal hole from a some cut (press work process). Tangent lines of corner portions of the plurality of step portions 7 of the molded body become the molded body surface 8. In the present embodiment, the oblique hole means a hole whose hole axis is inclined with respect to the surface of the molded body. Further, “simultaneously” means “a series” or “sequentially”.

  Moreover, in the modification of this Embodiment, a cutting process and a press work process can also be implemented as follows. That is, first, a plurality of cuts are formed in the flat plate 5 in the cutting process. And a manufacturing process is once stopped at the time of forming several cut | interruptions (stop process). Subsequently, a pressing process can be performed. In still another modification, a cutting process including a multi-stage cutting operation can be used.

  Specifically, the press forming part 42 according to the present embodiment has a wave-shaped wave blade 42a. On the other hand, as shown in FIG. 3D, the lower blade 50 is provided adjacent to the cutting blade 52 that forms a plurality of cuts in the flat plate 5 and the cutting blade 52, and presses each of the plurality of cut portions. And a processing part 54 having a substantially waveform. That is, the upper end of the lower blade 50 has an uneven shape in which the cutting blade 52 and the machining die portion 54 are continuously arranged.

  The cutting process and the pressing process will be described in more detail. First, in the flat plate 5 supplied between the press forming part 42 and the lower blade 50, a plurality of intermittent cuts are formed by the wave blade 42a of the press forming part 42 and the cutting blade 52 of the lower blade 50 ( For example, staggered cuts are formed on the flat plate 5). That is, the wave blade 42 a is pressed toward the cutting blade 52, thereby forming a plurality of cuts on the flat plate 5. And the precision press work (for example, precise waveform processing) is given to each part of a plurality of cuts by wave cutting edge 42a and the precision processing die part which is processing die part 54. That is, when the wave blades 42a are pressed toward the machining die portion 54, diagonal holes are formed in a staggered pattern from each of the plurality of cuts. Thereby, the molded object which has the diagonal hole arranged with a short pitch with respect to the plate | board thickness of the flat plate 5 is formed. As an example, the ratio of the plate thickness of the flat plate 5 to the pitch can be about 2 to 3, and in this case, the pitch can be made close to the plate thickness. The formed body in which the oblique holes are formed is conveyed from the press forming part 42 and the lower blade 50 in a direction oblique to the operation direction of the press forming part 42. It should be noted that the hole pitch in the direction along the width of the cutting blade 52 and the hole pitch in the direction perpendicular to the direction along the width of the cutting blade 52 are the pitch of the unevenness of the cutting blade 52 immediately after the cutting step. The pitch is substantially the same, and after the pressing process, the pitch is different from the uneven pitch of the cutting blade 52.

  Since the lower blade 50 according to the present embodiment includes the cutting blade 52 and the processing die portion 54, cutting and pressing are performed on the flat plate 5 at the same time. After going through the cutting process and the pressing process, the flat plate 5 becomes a molded body having a plurality of oblique holes. As shown in FIG. 3C, the molded body is supplied to the bending molding unit 60 along the conveyance direction 122. That is, in the present embodiment, the supply direction 120 of the flat plate 5 with respect to the perforated plate manufacturing apparatus 3 changes to a transport direction 122 in a direction different from the supply direction 120 at the cutting position 100.

  Here, the conveyance direction 122 is inclined by an angle β with respect to the cutting position 100 as shown in FIG. 3C. The angle β is defined by the following equation.

(Bending process)
Next, by passing the molded body between the bending molded part 60 and the bending jig 65, the molded body is bent to correct the hole axial direction of the oblique holes (bending process). That is, by bending the molded body that has undergone the cutting process and the pressing process by the bending part 60 and the bending jig 65, the hole axes of the plurality of oblique holes are aligned in one direction. Specifically, the hole axes of the plurality of oblique holes are aligned in a direction along the operation direction of the smooth compression press unit 44 described later. That is, as the molded body is conveyed along the conveyance direction 122 while being pressed against the bending portion 60 by the bending jig 65, the hole axis of the oblique hole of the molded body is gradually rotated with respect to the conveyance direction 122. Then, a molded body in which the hole shaft of the oblique hole is rotated by approximately 90 ° with respect to the hole shaft immediately after the cutting process and the press working process is supplied to the smooth compression press unit 44.

  The formed body in which the directions of the hole axes of the plurality of oblique holes are aligned is supplied to the smooth compression press unit 44 by the frame feed guide jig 70. That is, the compact is supplied to the smooth compression press unit 44 “one frame” at a time. Here, “one frame” refers to a unit in which a portion where a plurality of oblique holes of the molded body are arranged in a line in a straight line.

(Compression process)
Next, the molded body supplied to the smooth compression press unit 44 frame by frame by the frame feed guide jig 70 is along the direction along the hole axis of the hole of the molded body, that is, along the direction horizontal to the hole axis. It is compression-molded by the smooth compression press part 44 which moves up and down (compression process, FIG. 3B). The compression molding is performed on the stepped portion 1a of the molded body conveyed between the smooth compression press portion 44 and the receiving portion 45a. As a result, the porous plate 1 having a thickness of “W” is manufactured. In the present embodiment, the plate thickness “W” of the perforated plate 1 coincides with the feed width at which the flat plate 5 is supplied to the press-forming portion 42 and the lower blade 50.

  Subsequently, the porous plate 1 in which a plurality of holes 10 having a hole axis perpendicular to the core surface 20 is formed is carried out of the porous plate manufacturing apparatus 3 along the carrying-out direction 124 (FIG. 3C). When the stepped portion 1a is compression-molded, the porous plate 1 carried out from the porous plate manufacturing apparatus 3 has a core surface 20 and a core surface 25 which are smooth surfaces. When the perforated plate 1 is carried out of the perforated plate manufacturing apparatus 3 from the compression press position 110 where the smooth compression press unit 44 applies compression molding to the molded body, the carry-out direction 124 is the compression press position 110. Changes by an angle γ. Note that the angle γ varies depending on the material of the flat plate 5 that is the raw material of the perforated plate 1, the shape of the plurality of holes 10, and the like.

  Here, since the molded body having the oblique holes is compressed by the compression step, it is preferable to select a material that is easy to compress and deform as the material constituting the molded body, that is, the material constituting the flat plate 5. Further, since the stepped portion 1a is compressed to a thickness that is approximately ½ of the thickness before compression by the compression process, the molded body has a ductility that does not cause damage or the like even if the thickness is compressed to the thickness. It is preferable to use the material which has. For example, it is preferable to use a metal material or an alloy material as described above.

(Modification)
In the modification of the method for manufacturing the perforated plate according to the first embodiment, the press molding unit 42 is operated not only in the vertical direction but also every time the press molding unit 42 is pressed against the lower blade 50. 42 can be operated with a half-pitch shift in the normal direction (lateral direction) of the paper surface of FIG. 3A. In this case, both the press molding part 42 and the lower blade 50 are reciprocated in a direction perpendicular to the operation direction of the press molding part 42. That is, the press molding part 42 is pressed with respect to the lower blade 50, and the lower blade 50 is pressed with respect to the press molding part 42 while being shifted every half pitch. And by making the structure of the lower blade 50 into a shape that can respond to the operation in the lateral direction of the press molding part 42, the direction of the plurality of cuts formed in the flat plate 5 can be matched with the direction of the molded body. it can.

  Further, the plate thickness of the porous plate 1 according to the first embodiment is compressed to “W” in the compression step, but as long as the stepped portion 1a is compressed, the thickness of the porous plate after the compression step is The plate thickness can also be formed to be “2 W” or less. Even in such a case, the hole axis is perpendicular to the plate surface, and the smoothness of the surface of the porous plate can be improved as compared with the case where the compression step is not performed.

(Effects of the first embodiment)
According to the method for manufacturing a perforated plate according to the present embodiment, the flat plate 5 supplied to the perforated plate manufacturing apparatus 3 is subjected to a cutting process and a press process that is a precision press process simultaneously, Since the compression process is performed, the hole axis 10a is perpendicular to the core surface 20 and the core surface 25, the hole 10 has a small diameter with respect to the plate thickness, and the smooth perforated plate 1 having a large aperture ratio of the holes 10 (A fine porous plate, that is, a fine pore metal) can be provided. Moreover, since the several hole 10 is formed by a cutting process and a press work process, unlike punching metal, there is no punching waste, a manufacture yield is favorable, and all the flat plates 5 can be processed into the porous plate 1. FIG.

  Specifically, the lower blade 50 according to the present embodiment includes a cutting blade 52 and a processing die portion 54, and the cutting blade 52 is flattened by pressing the press molding portion 42 against the lower blade 50. 5, the staggered cuts are formed at the same time as the processing die portion 54 performs precise corrugation forming on the cuts, so that it is possible to form a molded body having oblique holes with a pitch shorter than the plate thickness of the flat plate 5. it can. Then, after bending the molded body and rotating the hole axis of the oblique hole, compression molding is applied to the molded body subjected to the bending process, so that the hole axis is perpendicular to the core surface 20. The board 1 can be manufactured.

  Further, according to the method for manufacturing the perforated plate 1 according to the present embodiment, the angle α to be supplied to the perforated plate manufacturing apparatus 3 for the flat plate 5 is defined as “Equation 1”, and the perforated plate 5 is used for the perforated plate manufacturing apparatus. Since the speed per one stroke supplied to 3 is defined as “Equation 2”, the press forming unit 42 can be performed in the vertical direction without operating in the horizontal direction, and the mesh-shaped press molding can be performed. High-precision and high-speed machining can be realized.

  The perforated plate 1 according to the present embodiment can be applied to an optical filter, a fluid filter or the like having a large aperture ratio.

(Second Embodiment)
FIG. 4 shows an outline of the perforated plate manufacturing apparatus according to the second embodiment of the present invention.

  The manufacturing method of the porous plate 1 according to the second embodiment is the same as the manufacturing method of the porous plate 1 according to the first embodiment except that there is no bending process and the compression process is different. The manufacturing method of the porous plate 1 according to the embodiment is provided with substantially the same configuration. Therefore, detailed description is omitted except for the differences.

  As shown in FIG. 4, the perforated plate manufacturing apparatus 3a according to the second embodiment includes an oblique supply roll 30 for supplying the flat plate 5 to the perforated plate manufacturing apparatus 3a, and cutting and pressing the supplied flat plate 5. The press molding part 42 and the lower blade 50 which process are provided, and the smooth compression press part 46 and the compression molding part 56 which perform compression molding with respect to the molded object to which the cutting | disconnection and press work were given.

  First, the compact conveyed from the press molding part 42 and the lower blade 50 is conveyed along a direction horizontal to the operation direction of the press molding part 42. And the lower blade 50 which concerns on this Embodiment is further provided with the compression molding part 56 in the side surface, and performs the compression press to the molded object which has an oblique hole by the smooth compression press part 46 and the compression molding part 56. FIG.

  As an example, the slope 41 a of the pressing portion 41 included in the die set upper plate 40 presses the slope 46 b provided on the end portion 46 a of the smooth compression press portion 46 in accordance with the operation of the press molding portion 42. And the smooth compression press part 46 works toward the direction of the compression molding part 56 according to the said press. The smooth compression press unit 46 performs compression molding on the molded body between the smooth compression press unit 46 and the compression molding unit 56. By performing compression molding, the molded body becomes the perforated plate 1, and the perforated plate 1 is carried out of the perforated plate manufacturing apparatus 3 a from the opening 45 b of the lower die set 45.

  In the modification of 2nd Embodiment, it can also be set as the structure which does not provide the press part 41 and the edge part 46a. That is, in the modified example of the second embodiment, the plus molding part 42 and the smooth compression press part 46 are operated independently. For example, the smooth compression press unit 46 operates toward the compression molding unit 56 after the cutting step. The smooth compression press unit 46 performs compression molding on the molded body between the smooth compression press unit 46 and the compression molding unit 56.

[Example 1]
In Example 1, a porous plate having a shape defined in JIS-32 (see JISG3351) was manufactured using the porous plate manufacturing apparatus 3 according to the first embodiment of the present invention. As a raw material for the perforated plate, SUS304 material was used. The thickness of the perforated plate was set to “W” which is the same as the feed width to the flat perforated plate manufacturing apparatus 3.

  Further, as Comparative Example 1, a porous plate (expanded metal) having a shape defined in JIS-32 was produced. The expanded metal according to Comparative Example 1 was manufactured without going through a bending process and a compression process. Further, as Comparative Example 2, a rolled expanded metal obtained by rolling the expanded metal according to Comparative Example 1 was manufactured.

  Fig.5 (a) shows each site | part of the molded object in the Example 1 and Example 2 thru | or 7 mentioned later before a cutting process and a press work process. Moreover, FIG.5 (b) shows each site | part of the molded object after a cutting process and a press work process in Example 1 and Example 2 thru | or 7 mentioned later. In addition, the right figure of Fig.5 (a) is CC sectional drawing, The right figure of FIG.5 (b) is DD sectional drawing.

  5 (a) and 5 (b), “T” is the plate thickness before compression molding, “W” is the plate thickness after compression molding, and flat plate perforated plate manufacturing apparatus This is the feed width to 3. In the embodiment, the hole axis of the hole 10 is perpendicular to the surface of the fine pore metal, and the molded body is compression-molded in the manufacturing process, so that the plate thickness T is approximately 2 of the plate thickness T0 before press working. Doubled. “SW” is a hole pitch in a direction perpendicular to the direction along the width of the cutting blade 52 of the hole 10, and “LW” is a hole in the direction along the width of the cutting blade 52 of the hole 10. The pitch. In addition, the fine pore metal which concerns on an Example becomes the fine pitch with which the strand 15 is thick and the hole 10 is small compared with the conventional expanded metal.

  Table 1 shows the dimensions of each part of the molded body after the cutting process and the pressing process according to Examples 1 to 7.

  FIG. 6 shows a comparison result of the aperture ratio and the hole axis inclination between the porous plate according to Example 1 and the expanded metal according to Comparative Examples 1 and 2.

(About JIS-32 shape)
The case of the porous plate (Example 1) which has the shape of JIS-32, and an expanded metal (Comparative Examples 1 and 2) is demonstrated. In this case, the inclination of the hole axis (hole axis inclination) of the expanded metal according to Comparative Example 1 was 72 °. Moreover, the hole axis | shaft inclination of the expanded metal after rolling processing which concerns on the comparative example 2 was 75 degrees. On the other hand, the hole axis inclination of the porous plate according to Example 1 was 90 °. Next, the opening ratio of the expanded metal according to Comparative Example 1 was 67%, and the opening ratio of the rolled metal expanded metal according to Comparative Example 2 was 68%. On the other hand, the aperture ratio of the porous plate according to Example 1 was 77%. The aperture ratio is the transmittance of the hole in the top view of the porous plate, and in the expanded metal according to Comparative Example 1,
Aperture ratio = SW0 × (LW0 + B) / SW / LW × 100
Can be calculated as

[Example 2]
In Example 2, a perforated plate having a shape defined in JIS-14 was manufactured using the perforated plate manufacturing apparatus 3 according to the first embodiment of the present invention. As a raw material for the perforated plate, SUS304 material was used. Other manufacturing methods are the same as those in the first embodiment.

  FIG. 7 shows a comparison result of the aperture ratio and the hole axis inclination between the perforated plate according to Example 2 and the expanded metal according to Comparative Examples 3 and 4.

(About JIS-14 shape)
The case of the porous plate (Example 2) which has the shape of JIS-14, and an expanded metal (Comparative Examples 3 and 4) is demonstrated. In this case, the inclination of the hole axis (hole axis inclination) of the expanded metal according to Comparative Example 3 was 62 °. In addition, the hole axis inclination of the rolled expanded metal according to Comparative Example 4 was 66 °. On the other hand, the hole axis inclination of the porous plate according to Example 2 was 90 °. Next, the opening ratio of the expanded metal according to Comparative Example 3 was 44%, and the opening ratio of the expanded metal after rolling according to Comparative Example 4 was 51%. On the other hand, the aperture ratio of the porous plate according to Example 2 was 57%.

  From the results of Examples 1 and 2, in the case of the perforated plate according to Examples 1 and 2, the hole axis of the perforated plate is perpendicular to the surface of the perforated plate, and the respective comparisons corresponding to Examples 1 and 2 It was shown that the aperture ratio becomes larger than the example. Further, from the results of Examples 1 and 2, when the LW / W ratio is about 15, for example, when the LW / W ratio is 10 or more and 100 or less, in Examples 1 and 2, the aperture ratio is increased. It was shown that it can.

[Examples 3 to 7]
In Example 3, a porous plate (fine pore metal: small porous) having a small diameter LW of 2 mm was manufactured using the porous plate manufacturing apparatus 3 according to the first embodiment of the present invention. As a raw material for the perforated plate, SUS304 material was used. Furthermore, the thickness of the flat plate as the raw material for the porous plate is 0.5 t, and the feed width “W” to the flat plate manufacturing apparatus 3 is 2 mm. Other manufacturing methods are the same as those in the first embodiment. Similarly to Example 3, a porous plate with LW of 1 mm (Example 4, fine pore metal: fine hole A), a porous plate with LW of 2 mm (Example 5, fine pore metal: fine hole B), LW Is 0.32 mm and W is 0.2 mm porous plate (Example 6, fine pore metal: thin A), and LW is 0.12 mm and W is 0.2 mm porous plate (Example 7) , Fine pore metal B).

  Further, as Reference Example 1, a porous plate according to Example 3 that was not subjected to a bending process and a compression process was manufactured. In addition, as Reference Example 2, a rolled porous sheet obtained by rolling the porous plate according to Reference Example 1 was manufactured.

  FIG. 8 shows a comparison result of the aperture ratio and the hole axis inclination between the porous plate according to Example 3 and the porous plates according to Reference Examples 1 and 2.

  The results of fine pore metal (Example 3) and perforated plates (Reference Examples 1 and 2) will be described. In this case, the hole axis inclination (hole axis inclination) of the porous plate according to Reference Example 1 was 45 °, and the hole axis inclination of the rolled porous hole according to Reference Example 2 was 33 °. On the other hand, the hole axis inclination of the fine pore metal according to Example 3 was 90 °. Next, the aperture ratio of the porous plate according to Reference Example 1 was 26%, and the aperture ratio of the rolled porous sheet according to Reference Example 2 was 23%. On the other hand, the aperture ratio of the fine pore metal according to Example 3 was 65%.

  9A is an outline of the porous plate according to Reference Example 1, FIG. 9B is an outline of the porous plate according to Reference Example 2, and FIG. 9C is a view of the fine pore metal according to Example 3. It is an outline.

  The aperture ratio of the porous plate according to Reference Example 1 was 26%, and the angle θ1 of the hole axis shown in the dd cross section shown in FIG. 9A was 45 °. Moreover, the aperture ratio of the perforated plate according to Reference Example 2 was 23%, and the angle θ2 of the hole axis shown in the ee cross section shown in FIG. 9B was 33 °. On the other hand, the fine pore metal according to Example 3 had an aperture ratio of 65%, and the angle θ3 of the hole axis shown in the ff cross section shown in FIG. 9C was 90 °. The aperture ratio of the fine pore metal according to Example 3 was about 2.5 times that of the porous plate according to Reference Examples 1 and 2.

  From the results of Example 3, it was shown that a fine pore metal having a large aperture ratio with a hole axis perpendicular to the plate surface can be produced even with a fine porous plate having an LW / W of about 2.

Example 4
Further, a fine pore metal was produced in the same manner as in Example 3 by replacing the fine pore metal raw material with an invar material such as 42 alloy and a super invar material. As a result, it was possible to produce a fine pore metal as a smooth fine porous plate having a large aperture ratio similar to that in Example 3.

  While the embodiments and examples of the present invention have been described above, the embodiments and examples described above do not limit the invention according to the claims. It should be noted that not all combinations of features described in the embodiments and examples are necessarily essential to the means for solving the problems of the invention.

1 Perforated plate 2 Reference example 1
2a Reference Example 2
3, 3a Perforated plate manufacturing device 5 Flat plate 7 Step 8 Surface of molded body 10 Hole 15 Strand 20, 25 Core surface 30 Diagonal supply roll 40 Die set upper plate 41 Pressing portion 42 Press forming portion 44 Smooth compression press portion 45 Die set Lower part 46 Smooth compression press part 50 Lower blade 52 Cutting blade 54 Processing die part 56 Compression molding part 60 Bending molding part 65 Bending jig 70 Top feed guide jig 100 Cutting position 110 Compression press position 120 Supply direction 122 Conveying direction 124 Unloading direction

Claims (9)

To the flat plate supplied intermittently, toward the lower blade supporting the flat plate on one side of the flat plate,
A cutting step of forming a plurality of cuts on the flat plate by pressing a press-formed part from the other surface side of the flat plate;
A pressing process for forming a molded body having a plurality of oblique holes by applying a press process to the plurality of cut portions; and
The molded body is compression-molded along the direction of the hole axis of the plurality of oblique holes of the molded body to form a perforated plate having a plurality of holes with a hole axis perpendicular to the planar direction of the molded body. The manufacturing method of a perforated panel provided with the compression process to do. The lower blade is provided adjacent to the cutting blade that forms the plurality of cuts, and the cutting blade,
A processing die portion for pressing the plurality of cut portions,
The cutting step forms the plurality of cuts by pressing the press-molded portion against the cutting blade,
The said press work process is a manufacturing method of the porous plate of Claim 1 which forms the said molded object simultaneously with the said cutting process by the said press molding part being pressed toward the said process die part. A bending process for bending the molded body;
The said compression process is a manufacturing method of the porous plate of Claim 2 which forms the said porous plate from the said molded object to which the bending process was given.   The cutting step is supplied while being inclined with respect to the longitudinal direction of the lower blade, and the flat plate supplied with a feed stroke synchronized with a cycle in which the press-formed portion is pressed against the flat plate. The manufacturing method of the perforated panel of Claim 3 which forms.   In the compression step, when the interval between one hole of the plurality of holes and another hole adjacent to the one hole is LW, and the thickness of the porous plate is W, the value of the LW is The method for producing a perforated plate according to claim 4, wherein the perforated plate having a value equal to or greater than W is formed. A plurality of slits are formed on the flat plate by pressing a press-molded portion from the other surface side of the flat plate to the flat plate supplied intermittently toward the lower blade supporting the flat plate on one surface of the flat plate. A cutting step to form;
A pressing process for forming a molded body having a plurality of oblique holes by applying a press process to the plurality of cut portions; and
By pressing a smooth compression press section against the molded body from a direction perpendicular to the pressing direction of the press-molded section, the compressed body is compressed along the direction of the hole axes of the plurality of oblique holes of the molded body. And a compression step of forming a porous plate having a plurality of holes having a hole axis perpendicular to the planar direction of the formed body.   The said compression process is a manufacturing method of the perforated panel of Claim 6 which presses the said smooth compression press part toward the side surface of the said lower blade. A plurality of holes surrounded by a plurality of strands;
A core surface formed by the surfaces of the plurality of strands,
A perforated plate in which a hole axis of each of the plurality of holes is perpendicular to the core surface.   When the interval between one hole of the plurality of holes and another hole adjacent to the one hole is LW, and the thickness of the porous plate is W, the value of LW is equal to or greater than the value of W. The perforated plate according to claim 8.

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