JP2008307587A - Method and apparatus for manufacturing corrugated plate with hole - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To position end parts of slit holes provided on a corrugated plate at plane parts between mutual corrugated bent parts. <P>SOLUTION: The length of the slit hole 20 corresponding to a strip-shaped member 10 in the extending direction is made equal to the extended length by one pitch of a wave in the corrugated plate 10A. After closing up the pitch following the corrugate shaping by a pair of shaping rolls 11a, 11b, the shape of the slit hole 20 is recognized by an image sensor 14. When the recognized shape of the slit hole 20 is not a corresponding rectangular shape when positioning the ends of the slit hole 20 at the corrugated plane part, it is determined that the ends of the slit hole 20 are positioned at the corrugated bent parts, and the upper shaping roll 11a is moved in any of upper and lower directions, thereby varying the mutual interval between the pair of shaping rolls 11a, 11b. This positions the end parts of the slit hole 20 at the plane parts between mutual corrugated bent parts. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to a corrugated plate manufacturing method and a manufacturing apparatus for supplying a band-shaped member having a through-hole between a pair of forming rolls having forming teeth on the outer peripheral portion to form a corrugated plate.

  Conventionally, corrugated fins (hereinafter referred to as corrugated plates) made of thin metal plates such as aluminum and stainless steel have been used for metal carriers of catalytic converters that purify exhaust gas in automobiles and radiator cores such as heat exchangers. Yes.

  Among these, the metal carrier is composed of a core having a substantially circular cross section by alternately winding a corrugated plate and a flat plate made of a thin metal plate, and a metal outer cylinder on which the core is mounted. By passing the exhaust gas through a plurality of cell passages formed between the plates, harmful components contained in the exhaust gas are removed by the catalytic reaction of the catalyst layer supported on the core surface. It is what.

  Conventionally, for the purpose of improving the exhaust purification performance of the metal carrier, slit holes, which are a plurality of through holes, are formed on the surface of the corrugated plate to generate turbulent flow when the exhaust gas passes through the metal carrier. There have been proposed those in which the exhaust gas and the catalyst layer are in contact with each other (see Patent Documents 1 and 2 below).

Further, as such a corrugated sheet manufacturing apparatus, fin materials formed into corrugated form by a corrugating machine are processed in the order of a pitch filling machine, an intermediate filling machine, and a pitching machine to obtain fins. A device in which the pitch is adjusted has been proposed (see Patent Document 3 below).
JP 2002-143893 A JP 2004-188328 A JP 11-147149 A

  The band-shaped member before pitch filling described above has slit holes formed at predetermined intervals. The band-shaped member is formed into a wave shape and then packed into a pitch. When the end of the slit hole is located on the curved surface portion of the wave shape at the time of pitch packing, the belt-shaped member is orthogonal to the ridge line at the top of the curved surface portion. It becomes weak against the force applied in the direction, and deformation such as curling of the curved surface portion and variation in dimensional shape is likely to occur.

  And the core assembled using the corrugated plate in which such deformation has occurred tends to cause a poor diffusion bonding between the corrugated plate and the flat plate, the heat transfer inside the core deteriorates, and the exhaust purification performance cannot be improved. There is a problem.

  Therefore, an object of the present invention is to position the end portions of the through holes formed in the corrugated plate at the plane portions between the curved surface portions of the corrugated plate.

  The present invention is a method for producing a corrugated plate with a hole that is formed into a corrugated sheet by supplying a band-shaped member having a through hole along a direction of extension between a pair of forming rolls having forming teeth on an outer peripheral portion, The length of the through hole corresponding to the extending direction of the band-shaped member is set to an integral multiple of 1/2 of the development length of one wave of the wave on the corrugated plate, and then intersects the surface of the corrugated plate. When the shape of the through hole is recognized from the direction and the end of the through hole corresponding to the extending direction of the band-shaped member is positioned on the corrugated curved surface of the corrugated plate The main feature is that the distance between the pair of forming rolls is changed so that the end portion of the through hole is positioned on the plane portion between the wavy curved surface portions. To do.

  According to the present invention, since the end portion of the through hole is positioned in the plane portion between the wavy curved surface portions, the end portion of the through hole becomes strong against the force applied in the direction perpendicular to the ridge line of the top portion of the curved surface portion, and the curved surface It is possible to form a desired wave shape while suppressing deformations such as part curling and dimensional variation. As a result, the diffusion bonding failure of the curved surface portion can be prevented, and the thermal conductivity of the core assembled using this corrugated sheet can be improved to improve the purification performance.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic configuration diagram of a corrugated plate manufacturing apparatus (hereinafter referred to as a corrugated sheet manufacturing apparatus) 100 according to an embodiment of the present invention. The corrugated sheet manufacturing apparatus 100 is configured as shown in FIG. A corrugated plate 10A with a hole is formed by roll forming on the belt-like member 10 in which the slit hole 20 as a through hole is formed.

  As shown in FIG. 1, the corrugated sheet manufacturing apparatus 100 according to the present embodiment includes a forming roll unit 11, a pitch filling roll unit 12, and a shaping roll unit 13, and further includes a pitch filling roll unit 12 and a shaping roll unit. 13 is provided with an image sensor 14 as hole shape recognition means for recognizing the shape of the slit hole 20 from the direction intersecting the surface of the corrugated plate 10A (upward in FIG. 1).

  Further, although not shown, a plurality of rows of slit holes 20 are formed on the upstream side (left side in FIG. 1) of the forming roll portion 11 along the forming direction (feed direction of the belt-like member 10) as shown in FIG. A supply roller around which the formed belt-like member 10 is wound is disposed.

  The belt-like member 10 set on the supply roller is pulled out by a feed roll (not shown) and continuously supplied to the forming roll unit 11 sequentially. In FIG. 1, only main parts constituting the corrugated sheet manufacturing apparatus 100 are shown, and other parts (for example, a drive mechanism) are not shown.

  The forming roll part 11 is composed of a pair of upper and lower forming rolls 11a and 11b, and a plurality of forming teeth 110a and 110b are arranged on the circumference of the roll outer peripheral surface of the forming rolls 11a and 11b, respectively, as shown in FIG. Are formed along. The band-shaped member 10 is formed into a corrugated shape as shown in FIG. 3 by fitting the formed teeth 110a and 110b at a predetermined interval and supplying the band-shaped member 10 between the rolls while being driven to rotate in the direction of the arrow. Hereinafter, the corrugated sheet 10A is referred to as a first wave shape.

  The forming teeth 110a and 110b have a corrugated plate height that is higher than a target corrugated plate height and corrugated pitch wave shape (hereinafter referred to as a target corrugated shape) so that the band-shaped member 10 does not break during molding. It is set so that it is low and the pitch of the mountain is wide.

  FIG. 4 is a front view of the periphery of the above-described forming rolls 11a and 11b as seen from the feeding direction of the band-shaped member 10. The forming rolls 11a and 11b are respectively provided with rotation support shafts 111a and 111b protruding at both axial ends. The bearings 112a and 112b are rotatably supported.

  Here, the lower bearing 112b is fixed on the block 16 fixed on the base plate 15 of the main forming roll part 11 via the housing 30, and the housing 30 and the upper bearing 112a of the lower bearing 112b are fixed. A compression coil spring 17 serving as an elastic body is interposed between the housing 31 and the housing 31. At this time, the upper bearing 112a is always pressed upward by the compression coil spring 17 through the housing 31, and can move together with the housing 31 in a direction approaching and separating from the lower bearing 112b. is there.

  A nut member 113 is attached to the upper portion of the upper bearing 112a, and a shaft 114 having a threaded portion that is screwed into the nut member 113 at its distal end is extended in the vertical direction. A base end portion (upper end portion) of the shaft 114 is provided. Then, it is connected to a motor 18 that can rotate forward and reverse as a forming roll moving means. The motor 18 is fixed to, for example, a stand (not shown) standing on the base plate 15 of the forming roll unit 11.

  Accordingly, when the motor 18 is driven, the shaft 114 rotates, and the upper bearing 112a and the housing 31 integral with the nut member 113 into which the threaded portion of the shaft 114 is screwed together with the rotation support shaft 111a and the forming roll 11a. As a result, the distance between the pair of forming rolls 11a and 11b changes.

  Returning to FIG. 1, the pitch filling roll unit 12 includes a pair of upper and lower pitch filling rolls 12a and 12b. On the roll surface of these pitch filling rolls 12a and 12b, as shown in FIG. 120b are formed along the circumference. The corrugated sheet 10A discharged from the upstream forming roll unit 11 is temporarily corrugated on the inlet side of the pitch filling roll unit 12 to have a corrugated shape in which the curved surface parts 10Ab of the corrugated sheets are in pressure contact with each other (hereinafter, Called second wave shape). In the second wave shape, the curved surface portion 10Ab is substantially semicircular. When the pitch filling rolls 12a and 12b are rotationally driven in the direction of the arrow in this state, the crest portions of the forming teeth 120a and 120b enter between the press-contacted curved surface portions 10Ab, and the trough portions press the curved surface portion 10Ab over the entire surface and the curved surface portion 10Ab. Separate each other. Thereby, curved surface part 10Ab isolate | separates in an exit side, and becomes a wave shape with a wider corrugated plate pitch than a 2nd wave shape (henceforth a 3rd wave shape).

  If the curved surface portion 10Ab in the wave shape is moved while being partially pressed, the corrugated plate 10A may be deformed. However, in the present embodiment, as shown in FIG. 5, since the curved surface portions 10Ab are separated from each other while holding the curved surface portion 10Ab over the entire surface, deformation of the corrugated plate 10A can be prevented.

  The shaping roll unit 13 is composed of a pair of upper and lower shaping rolls 13a and 13b. On the surface of these shaping rolls 13a and 13b, as shown in FIG. 6, a plurality of forming teeth 130a and 130b are arranged on the circumference. Are formed along. The crest portions of the forming teeth 130a and 130b enter between the curved surface portions 10Ab of the corrugated plate 10A formed in the third wave shape, and pull the corrugated plate 10A in the conveying direction.

  That is, the corrugated sheet 10 </ b> A having the third wave shape when discharged from the pitch filling roll unit 12 is driven between the pitch filling roll unit 12 and the shaping roll unit 13 by synchronously driving each roll unit. And finally transported in a state of being stretched to substantially the same pitch as that of the forming teeth 130a and 130b formed on the shaping rolls 13a and 13b.

  Accordingly, when the forming roll unit 11, the pitch filling roll unit 12, and the shape forming roll unit 13 are driven synchronously, the corrugated sheet 10 </ b> A is discharged from the pitch filling roll unit 12. Then, the corrugated sheet 10A discharged from the shape forming roll unit 13 is formed into a final target wave shape by the pulled fin pitch being contracted by the spring restoring force.

  As described above, the shaping roll unit 13 uses the elastic region of the corrugated plate 10A to pull the fin pitch so as to be wider than the target value.

  Next, a procedure for manufacturing the corrugated sheet 10A using the corrugated sheet manufacturing apparatus 100 configured as described above will be described.

  First, as shown in FIG. 7, the tip of the belt-like plate member 10 is brought into contact with the tip of one molding tooth 110a of the molding roll 11a, and one side (lower surface) is adjacent to the upstream side of the molding tooth 110a in contact with the molding tooth 11a. The roll 11b is set so as to be in contact with the tip of the formed tooth 110b. Then, the forming rolls 11a and 11b are rotationally driven in the arrow direction. Thereby, as shown in FIG. 3, the strip | belt-shaped board | plate material 10 is shape | molded by the corrugated sheet 10A of a 1st wave shape (primary shaping | molding process).

  When the belt-like plate member 10 is set as described above, the motor 18 shown in FIG. 4 is driven so that the upper forming roll 11a is separated from the lower forming roll 11b from a fixed position. This facilitates the setting work.

  Thereafter, the corrugated sheet material 10A formed in the first corrugated shape reaches the pitch filling roll portion 12 and abuts between the pitch filling rolls 12a and 12b. Further, when the forming rolls 11a and 11b are rotationally driven, the corrugated sheet 10A formed in the first corrugated shape is temporarily dammed on the inlet side of the pitch filling roll section 12 and the corrugated sheet discharging force from the forming roll section 11 is obtained. As a result, the curved surface portions 10Ab of the corrugated plates are pressed together to form a second wave shape (this process is referred to as pitch packing). At this time, the pitch filling rolls 12a and 12b may be rotationally driven by a predetermined angle in the direction of the arrow so that the second wave-shaped portion meshes with the forming teeth 120a and 120b of the pitch filling rolls 12a and 12b.

  Thereafter, when the forming rolls 11 a and 11 b are continuously driven to rotate, the second wave-shaped portion is accumulated between the forming roll portion 11 and the pitch filling roll portion 12. Then, when the second wave-shaped portion is collected up to the vicinity of the exit of the forming roll unit 11, the forming roll unit 11, the pitch filling roll unit 12 and the shaping roll unit 13 are driven in synchronization with each other, The corrugated plate 10A is discharged to the downstream side one by one. After starting this synchronous drive, it is not necessary to temporarily dam the corrugated sheet 10A between the forming roll part 11 and the pitch filling roll part 12, and the first wave shape 1 discharged from the forming roll part 11 The crests are press-contacted in order between the forming roll unit 11 and the pitch filling roll unit 12 and formed into a second wave shape one by one.

  As shown in FIG. 5, by the synchronous drive, as shown in FIG. 5, in the forming teeth 120a and 120b formed on the pitch filling rolls 12a and 12b, the crests enter between the curved surface portions 10Ab pressed against the corrugated plate 10A, and the trough portions are curved surfaces. The curved surface portions 10Ab are separated from each other while pressing the portion 10Ab over the entire surface, and formed into a third wave shape having a corrugated plate pitch wider than the second wave shape (secondary forming step). At this time, in the present embodiment, the corrugated plate 10A having the third wave shape is imaged by the image sensor 14, which will be described later.

  Subsequently, as shown in FIG. 6, the corrugated sheet 10 </ b> A is wider than the target value between the curved surface portions 10 </ b> Ab of the corrugated sheet 10 </ b> A formed into the third corrugated shape by the forming teeth 130 a and 130 b of the shaping rolls 13 a and 13 b. To be pulled. Thereafter, the corrugated sheet 10A discharged from the shaping roll unit 13 has a corrugated sheet pitch reduced to a target corrugated shape (tertiary forming step).

  Although not particularly illustrated, between the forming roll part 11 and the pitch filling roll part 12 and between the pitch filling roll part 12 and the shaping roll part 13 in the thickness direction and the width direction of the corrugated sheet 10A. It is assumed that a fin guide that suppresses the skew is arranged.

  Next, a manufacturing method for preventing the end of the slit hole 20 from being positioned on the corrugated curved surface portion 10Ab in the corrugated plate manufacturing process as described above will be described.

  FIG. 2 is a plan view of the belt-like member 10 in which the slit hole 20 is formed. In the belt-like member 10 of the present embodiment, three slit holes 20 are arranged in the width direction (y direction) with an interval of a dimension 2P, and these three slit holes 20 are arranged in the transport direction (x direction) of the belt-like member 10. In this case, the three adjacent slit holes 20 are shifted by a dimension P in the width direction.

  The three slit holes 20 shifted by the dimension P in the width direction are located on the same line with the end portions close to each other extending in the width direction, and in the conveying direction of each slit hole 20 (extension direction of the strip member 10). The length dimension is L.

  As described above, if the end portion of the slit hole 20 is positioned on the corrugated curved surface portion 10Ab when pitching the belt-like member 10, the corrugated curved surface portion 10Ab is dripped when the pitch is compacted. Such deformation will occur. For this reason, in the present embodiment, the length L and the position of the slit hole 20 are set to predetermined values so that the end of the slit hole 20 is not positioned on the wave-like curved surface portion 10Ab.

  First, the length L of the slit 20 in this embodiment is set to be equal to the development length of one pitch in the wave shape, that is, twice the development length of 1/2. FIG. 8 is a schematic side view of one pitch showing the wave shape after the corrugated plate 10A is pitch-packed. As shown in FIG. 8, when one pitch is between the wave-shaped curved surface portions 10Ab, the developed length is 2C + 2Rπ. Here, C is the length of the corrugated flat portion 10Aa, and indicates the allowable range of the slit hole end, which will be described later. R indicates the radius of the curved surface portion 10Ab, and the length of the circumference drawn by this radius R is 2Rπ. H indicates the wave height.

Moreover, the position of the slit hole 20 in this embodiment is set so that both ends of the slit hole 20 in the transport direction of the band-shaped member 10 are positioned on the flat surface portion 10Aa of the corrugated sheet material 10A at least at the start of manufacture. For this reason, in the present embodiment, the distance X from the plate material end 10a on the front side in the transport direction of the band-shaped member 10 shown in FIG. 2 to the end of the first slit hole 20 is
a + b <X <a + b + c (1)
It is set to be in the range. Here, “a” is the distance from the plate material end portion 10a of the belt-like member 10 to the bending start position by the forming roll, and “b” is the length of ¼ of the circumference drawn by the radius R of the wave-shaped curved surface portion 10Ab. (FIG. 8), “c” indicates the waveform height H-2R (= C) in FIG. In addition, as described below, the plate material end portion 10a of the belt-shaped plate material 10 indicates a portion that first contacts the forming teeth 110a of the forming roll 11a when manufacturing the corrugated sheet is started. Hereinafter, it will be described with reference to FIG.

  FIG. 7 is a partially enlarged view when the belt-like member 10 is set on the forming rolls 11a and 11b. As shown in FIG. 7, the plate material end portion 10a of the belt-like member 10 is in contact with the tip of the forming tooth 110a of the forming roll 11a, and one surface (lower surface) of the belt-like member 10 is in contact with the tip of the forming tooth 110b of the forming roll 11b. Waveform shaping starts from (folding start point O).

  Since the metal material used as the material of the belt-shaped member 10 hardly stretches, the position of the folding start point O does not change even if pitch filling (secondary forming) is performed after the primary forming by the forming rolls 11a and 11b. Therefore, the distance X from the plate material end portion 10a of the strip member 10 to the end portion of the first slit hole 20 is set to be in the range of the above formula (1), and the strip member 10 is formed as shown in FIG. By setting between 11a and 11b and performing the molding, the end of the slit hole 20 can be positioned on the shaped corrugated flat surface portion 10Aa.

  FIG. 9 is a cross-sectional view showing the wave shape of the corrugated sheet 10A when the distance X in FIG. 2 is formed as a + b + (c / 2). In FIG. 9, the interval between α and β (outlined line) indicates a section where the slit hole 20 is provided, and the interval between β and γ (black line) indicates a section where the slit hole 20 is not provided. In this example, the end portion of the slit hole 20 is located at the center of the flat surface portion 10Aa indicated by the section C of the corrugated plate 10A, but the end portion of the slit hole 20 is within the slit hole end portion allowable range C. It can be in any position.

  In this embodiment, when the image sensor 14 shown in FIGS. 1 and 4 captures and recognizes the shape of the slit hole 20 as shown in the flowchart of FIG. 10 (step 101), the hole shape determination is performed. The control circuit 19 as means determines whether the shape of the slit hole 20 is rectangular (mouth shape) (step 102).

  FIG. 11 schematically shows a recognition image obtained by the image sensor 14, and when the end of the slit hole 20 is positioned on the wave-shaped flat portion 10Aa, as shown on the left side in FIG. The hole 20 is recognized as a rectangular shape (mouth shape) shown as an OK shape. On the other hand, when the end portion of the slit hole 20 is positioned on the wave-shaped curved surface portion 10Ab, as shown on the right side in FIG. 11, the slit hole 20 has a rectangular shape (mouth shape) as shown as an NG shape. It is recognized as a broken shape.

  As shown in FIG. 12, the reason for such a collapsed shape is that when the band-shaped member 10 is formed into a wave shape by the forming roll portion 11 as shown in FIG. When the pitch is filled as shown in FIG. 5B in a state where is positioned at the wavy bent portion (curved surface portion 10Ab), the both end portions are rolled up as indicated by broken lines.

  On the other hand, as shown in FIG. 13, when the belt-like member 10 is formed into a wave shape by the forming roll portion 11 as shown in FIG. When the pitch is narrowed as shown in FIG. 10B in a state where the curved surface portion 10Ab is located between the curved surfaces 10Ab, the both end portions are not rolled up, so that the recognition image by the image sensor 14 is shown in FIG. It becomes a rectangular shape like the OK shape.

  Therefore, returning to FIG. 10, when the control circuit 19 determines in step 102 that the shape of the slit hole 20 is rectangular (mouth shape), both ends of the slit hole 20 are positioned on the corrugated flat portion 10Aa. Therefore, the both ends are not rolled up as shown in FIG. 12B, and the molding operation is continued as it is (step 103).

  Conversely, when the control circuit 19 determines in step 102 that the shape of the slit hole 20 is not rectangular (mouth shape), the motor 18 is rotated in either the forward or reverse direction to rotate the shaft 114 in FIG. The upper bearing 112a integral with the nut member 113 into which the threaded portion of the shaft 114 is screwed moves together with the rotation support shaft 111a and the forming roll 11a in either the upper or lower direction (step 104), thereby a pair of forming rolls. The distance between 11a and 11b changes.

  At this time, when the forming roll 11a is raised to increase the distance from the lower forming roll 11b, the compression coil spring 17 is extended, and conversely, the forming roll 11a is lowered to narrow the distance from the forming roll 11b. The compression coil spring 17 is compressed.

  When the distance between the pair of forming rolls 11a and 11b changes, the development length of one pitch of the corrugated sheet 10A after the primary forming changes, but since the length L in the longitudinal direction of the slit hole 20 is constant, the slit The position of the end of the hole 20 moves from the curved surface portion 10Ab to the flat surface portion 10Aa. Thereby, it is possible to prevent the end portion from being bent due to the end portion of the slit hole 20 being positioned on the corrugated curved surface portion 10Ab.

  The limit value of the amount by which the forming roll 11a is moved upward or downward corresponds to the length of the curved surface portion 10Ab at the end of the slit hole 20, that is, the length of the semicircular curved surface portion 10Ab in FIG. The value of “Rπ” is set to a value that moves. By doing so, the end of the slit hole 20 can be obtained when the forming roll 11a is moved in either the upper or lower direction regardless of the position of the curved surface portion 10Ab of the semicircular arc portion. The part moves to the plane part 10Aa. However, the length of “Rπ” in this case is sufficiently shorter than the length C of the planar portion 10Aa.

  The limit value for moving the molding roll 11a is determined in advance by appropriately performing the operation of moving the molding roll 11a up and down.

  In addition, when the shape of the slit hole 20 is changed to the NG shape after the shape of the slit hole 20 is changed to the NG shape by the movement of the forming roll 11a, the movement direction of the forming roll 11a is changed to the previous NG shape. The reverse direction. Thereby, it ensures that the wave shape with respect to the strip | belt-shaped member 10 by the forming rolls 11a and 11b becomes a regulation magnitude | size (wave height).

  FIG. 14 is an experimental result showing a state in which the end portion of the slit hole 20 is bent at the semicircular curved surface portion 10Ab having a wave shape at the end portion. According to this, the end portion of the slit hole 20 is located at the center (vertex) of the curved surface portion 10Ab and protrudes greatly in the wave height direction as the size t at (b), (e), and (a), (c) In addition, as shown in (d) and (f), at the position where the end of the slit hole 20 is inclined by approximately 30 degrees from the center, the bent portion does not protrude beyond the wave height. In this case, diffusion bonding with the flat plate Sometimes it doesn't matter. Here, assuming that the radius R of the curved surface portion 10Ab is 0.32 mm, if the end portion is located within the position of the circumferential length of 0.16 mm of the curved surface portion 10Ab from the center (vertex) of the curved surface portion 10Ab, the result of curling It becomes.

  In FIG. 14, the “start point” is the end of the slit hole 20 on the front side in the transport direction of the strip-shaped member 10, and the “end point” is the end of the slit hole 20 on the rear side in the transport direction of the strip-shaped member 10. It is.

  In the present embodiment, the NG region is located in the entire area of the semicircular curved surface portion 10Ab including the position where the end of the slit hole 20 moves 30 degrees left and right around the center (vertex) of the semicircular curved surface portion 10Ab. Occasionally, at this time, the end of the slit hole 20 is moved to the flat surface portion 10Aa, so that the drooling phenomenon is surely prevented.

  As described above, in the present embodiment, since the end of the slit hole 20 can be prevented from being positioned on the corrugated curved surface portion 10Ab, the force applied in the direction perpendicular to the ridgeline of the curved surface portion 10Ab when pitching is performed. On the other hand, it becomes strong, and deformation such as curling of the curved surface portion 10Ab and variation in dimensional shape is unlikely to occur, and it can be formed into a desired wave shape.

  Further, when a corrugated plate 10A is used to manufacture a metal carrier core, for example, a poor diffusion bonding between the corrugated plate 10A and a flat plate member (not shown) hardly occurs, and the thermal conductivity of the core is reduced. Since it becomes favorable, the purification performance can be improved.

  Further, since the curved surface portion 10Ab of the corrugated sheet 10A is less likely to be deformed during pitch packing, the corrugated sheet 10A is unlikely to come off from the pitch packing rolls 12a and 12b, and molding defects can be reduced.

  FIG. 15 is an enlarged view of part A of FIG. 5, and the hooking h of the forming teeth 120 a (120 b) of the pitch filling rolls 12 a (12 b) with respect to the semicircular curved surface part 10 Ab of the corrugated sheet 10 A is 0.2 mm. It is said. In this case, as described above, even if the distance between the pair of forming rolls 11a and 11b is changed and the development length for one pitch of the wave shape is reduced by 0.16 mm at the maximum, the wave height is calculated to be 0.08 mm. It is only lowered, and the detachment of the corrugated sheet 10A from the pitch filling rolls 12a and 12b can be avoided.

  In the above embodiment, the slit length L is shown as an example of setting the development length for one pitch in the wave shape, that is, twice the development length to ½, but the half pitch that is ½ of the development length is shown. The same effect can be obtained even if it is an integral multiple of the expansion length of. Moreover, although the slit hole 20 of each row | line | column was shown about the example arrange | positioned alternately with the area which does not provide the slit hole 20 by the space | interval of the slit length L in the x direction of FIG. A section that is not provided may be provided as a section that is an integral multiple of the half-pitch development length.

  Moreover, although this embodiment demonstrated the manufacturing method of the corrugated board used for the core of a metal support | carrier, this invention is not limited to these uses, For example, it uses for radiator cores, such as a heat exchanger. In addition to the corrugated plate, it can be applied to other industrial products using the corrugated plate.

It is a schematic block diagram of the manufacturing apparatus of a corrugated board with a hole which shows one Embodiment of this invention. It is a top view of the strip | belt-shaped member in which the slit hole before shaping | molding by the manufacturing apparatus of FIG. 1 was formed. It is the elements on larger scale of the forming roll in the manufacturing apparatus of FIG. It is the front view seen from the feed direction of the strip | belt-shaped member in the periphery of the forming roll of the manufacturing apparatus of FIG. It is the elements on larger scale of the pitch packing roll in the manufacturing apparatus of FIG. It is the elements on larger scale of the shaping roll in the manufacturing apparatus of FIG. It is a partial enlarged view when a strip | belt-shaped member is set to a forming roll. It is a schematic side view which shows the wave shape after pitch-packing. It is sectional drawing which shows the wave shape of the corrugated sheet shape | molded by making distance X of FIG. 2 into a + b + (c / 2). It is a flowchart which shows the shaping | molding operation | movement by the manufacturing apparatus of FIG. It is a schematic diagram of the recognition image by the image sensor of the manufacturing apparatus of FIG. It is the front view of the corrugated sheet which shows the state where the both ends of the slit hole are located in the corrugated bent part (curved surface part), (a) is a state formed into a corrugated shape by the forming roll part of the manufacturing apparatus of FIG. (B) shows the state after pitch filling. It is a front view of the corrugated sheet which shows the state where the both ends of the slit hole are located on the corrugated flat part, (a) is the state formed into a corrugated shape by the forming roll part of the manufacturing apparatus of FIG. Each state after pitch filling is shown. It is explanatory drawing which shows the bending state of an edge part when the edge part of a slit hole is located in a wavy bent part (curved surface part). It is an enlarged view of the A section of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Strip-shaped member 10A Corrugated plate 10Aa Plane part of corrugated sheet 10Ab Curved part of corrugated sheet 11a, 11b A pair of forming rolls 14 Image sensor (hole shape recognition means)
18 Motor (Molding roll moving means)
19 Control circuit (hole shape judging means)
20 Slit hole (through hole)
110a, 110b Molding teeth of molding roll

Claims (3)

  A corrugated sheet is provided by feeding a belt-like member (10) having a through hole (20) between a pair of forming rolls (11a, 11b) having forming teeth (110a, 110b) on an outer peripheral portion along the extending direction. (10A) is a method for manufacturing a corrugated plate with holes, wherein the length corresponding to the extending direction of the band-like member (10) of the through hole (20) is equal to one pitch of the wave in the corrugated plate (10A). Then, the shape of the through hole (20) is recognized from the direction intersecting the surface of the corrugated plate (10A), and the recognized through hole (20) is set. The shape of the through hole (20) is determined to correspond to the end portion of the corrugated plate (10A) corresponding to the extending direction of the belt-like member (10) located on the corrugated curved surface portion (10Ab). In this case, the end of the through hole (20) is connected to the curved surface ( 0ab) flat portion between mutually (as is positioned 10Aa), said pair of forming rolls (11a, 11b) method for producing a perforated corrugated plate, characterized in that to change the mutual spacing.   The corrugated plate with holes according to claim 1, wherein the shape of the through hole (20) when the end portion of the through hole (20) is positioned on the corrugated flat surface portion (10Aa) is a rectangular shape. Manufacturing method.   A corrugated sheet is provided by feeding a belt-like member (10) having a through hole (20) between a pair of forming rolls (11a, 11b) having forming teeth (110a, 110b) on an outer peripheral portion along the extending direction. (10A) is a manufacturing apparatus for corrugated plate with holes, and the length corresponding to the extending direction of the band-like member (10) of the through hole (20) is set to one pitch of the wave in the corrugated plate (10A). Hole shape recognition means (14) for recognizing the shape of the through hole (20) from the direction intersecting the surface of the corrugated plate (10A) The shape of the through hole (20) recognized by the hole shape recognition means (14) is such that the end portion of the through hole (20) corresponding to the extending direction of the strip member (10) is the shape of the corrugated plate (10A). Whether it corresponds to the position on the curved surface (10Ab) The hole shape determining means (19) and the hole shape determining means (19) are configured so that the shape of the through hole (20) is such that the end of the through hole (20) is the curved surface portion (10Ab) having the wave shape. An apparatus for manufacturing a corrugated plate with holes, comprising: forming roll moving means (18) for changing a distance between the pair of forming rolls (11a, 11b) when it is determined that the position corresponds to the position.

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