JP2005262315A - Corrugate fin producing device and corrugate fin producing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make forming possible in a desired shape by eliminating variance of a fin shape after pitch-reducing forming, in a corrugate fin producing device and corrugate fin producing method. <P>SOLUTION: A fin member 10 is formed into a first corrugate shape by a forming roll pair 11a and 11b. Then, the fin apexes of the fin member 10 are pressure-connected to each other by a pitch closing roll pair 12a and 12b to form the fin member 10 into a second corrugate shape, and then the pressure-connected fin apexes of the fin member 10 are separated from each other to form the fin member 10 into a third corrugate shape having a greater fin pitch than the second corrugate shape. Further, the fin apexes of the third corrugate shape of the fin member 10 are pulled from each other by a shape forming roll pair 13a and 13b to form the fin member 10 into a target corrugate shape. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a corrugated fin manufacturing apparatus used for a radiator core such as a heat exchanger, and a corrugated fin manufacturing method using the manufacturing apparatus.

  Conventionally, in pitch filling molding of corrugated fins used in radiator cores such as heat exchangers, the top (ridge line direction) of the fins formed in a corrugated shape by a forming roll is pressed with a block such as urethane, and the friction force causes the fins There is something that performs pitch packing.

In addition, it is known that the fin material formed by the corrugating machine is continuously processed in the order of pitch filling machine, intermediate filling machine, and pitching machine to adjust the fin pitch ( For example, see Patent Document 1).
JP 11-147149 A

  The fin pitch-filling with the frictional force of the block as in the conventional example is suitable for a material having a small processing force such as an aluminum material. However, when using corrugated metal carrier material or stainless steel as the fin material, the processing force required to fill the pitch of the fin is greater than that of the aluminum material, especially when the fin height is low. Further, a larger processing force is required for pitching the fins. For this reason, when the pitch of fins is packed by the conventional method using stainless steel or the like, problems such as jumping of the fins or crushing of the fins occur, and the fins are formed into a desired shape. It was difficult.

  Moreover, in the manufacturing method disclosed in Japanese Patent Application Laid-Open No. 11-147149, the pitch filling rolls and the fins are meshed to perform pitch filling of the fins, so that the fin pitch cannot be filled until the fin tops are in contact with each other. For this reason, in particular, in the case of a material having a large repulsive force such as a stainless steel material, the crest returns after molding, and it has been difficult to mold the fin into a desired shape.

  An object of the present invention is to provide a corrugated fin manufacturing apparatus and a corrugated fin manufacturing method capable of forming a fin into a desired shape without variation in pitch shape after pitch filling.

  In order to achieve the above object, the invention of claim 1 is directed to a pair of forming rolls that form a belt-like fin member that is continuously conveyed into a first corrugated shape, and the fin members that are discharged from the pair of forming rolls. A pitch filling roll that presses the fin tops into a second corrugated shape and separates the fin tops that are pressed into the fin member into a third corrugated shape having a fin pitch wider than the second corrugated shape. A corrugated fin manufacturing apparatus comprising: a pair; and a shape forming roll pair for forming the fin member discharged from the pitch filling roll pair into a target corrugated shape.

  Invention of Claim 2 has the shaping | molding tooth | gear which isolate | separates said fin top parts in Claim 1, pressing down each fin top part of the fin member shape | molded by the said 2nd corrugated shape in said pitch corrugated roll pair in the whole surface. Features.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the first pressing means for suppressing the skew of the fin member in the thickness direction is provided.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the second pressing means for suppressing the skew of the fin member in the width direction is provided.

  According to a fifth aspect of the present invention, in any one of the first to fourth aspects of the present invention, a jumping means for separating the fin member from the forming tooth of each roll pair is provided.

  In order to achieve the above object, the invention of claim 6 is a corrugated fin manufacturing method using the corrugated fin manufacturing apparatus according to claim 1, wherein the fin member is formed into a first corrugated shape by the pair of forming rolls. Between the primary forming step to be formed and the pair of forming rolls and the pair of pitch filling rolls, the tops of the fins formed in the first corrugated shape are pressed together to form a second corrugated shape, and the pitch filling is performed. A secondary forming step of separating the fin top portions, which are press-contacted with the fin member by a roll pair, into a third corrugated shape having a fin pitch wider than the second corrugated shape; and the fin member by the shape forming roll pair. And a tertiary forming step of forming the material into a target corrugated shape.

  According to a seventh aspect of the present invention, in the sixth aspect, in the secondary forming step, only the forming roll pair is driven, and the fin member discharged from the forming roll pair is temporarily placed on the inlet side of the pitch filling roll pair. The fin tops of the fin member formed in the first corrugated shape are pressed against each other to form a second corrugated shape.

  The invention of claim 8 is the invention according to claim 7, wherein after forming the fin member into a second corrugated shape in the secondary forming step, the forming roll pair, the pitch filling roll pair and the shaping roll pair are driven synchronously. The fin members are discharged to the downstream side one by one.

  The invention according to claim 9 is the invention according to claim 1, wherein the pitch filling roll pair separates the fin tops from each other at the peak portion while pressing the fin tops of the fin member formed into the second corrugated shape at the valley portion. It is characterized by comprising a plurality of molding pieces having molding teeth to be formed and a pair of piece arrangement rolls that support both ends of the plurality of molding pieces.

  A tenth aspect of the present invention is that in the ninth aspect, the pair of piece arrangement rolls includes a piece attachment in which a plurality of convex portions are arranged along a circumference on one side, and the piece attachment is attached to and detached from the piece arrangement roll main body. The molding pieces are attached to each other in a longitudinal direction, and have holes that engage with the projections of the piece attachment.

  The invention according to claim 11 is the invention according to claim 9, wherein the pair of piece arrangement rolls includes a piece attachment having a plurality of holes arranged along the circumference on one side, and the piece attachment is attached to and detached from the piece arrangement roll body. The molding pieces are attached to each other in a longitudinal direction, and have convex portions that engage with the hole portions of the piece attachment.

  The invention of claim 12 is the invention according to any one of claims 9 to 11, wherein the molding piece has the fin member thickness of 50 μm and the fin top radius of R0.2 to 0.35. The width of the crest portion of the molded tooth is 0.1 mm, the height of the crest portion is 0.1 mm, the combined height of the crest portion and the trough portion is 0.3 mm, the width of the molded tooth body is 0.5 mm, and the trough portion The radius is set to R0.2.

  According to the present invention, the fin discharge force of the pair of forming rolls is used to close the fin pitch until the tops of the fins come into pressure contact with each other. Therefore, even when a material having a large repulsive force such as a stainless material is used. The peaks do not return later, and the fin shape can be made uniform. Therefore, there is no variation in the fin shape after pitch filling molding, and the corrugated fin can be molded into a desired shape.

  Hereinafter, the best mode for carrying out the corrugated fin manufacturing apparatus and the corrugated fin manufacturing method according to the present invention will be described.

  FIG. 1 is a schematic configuration diagram of a corrugated fin manufacturing apparatus according to the first embodiment. In FIG. 1, only the main part which comprises this manufacturing apparatus is shown, and illustration is abbreviate | omitted about other parts (for example, drive mechanism etc.).

  The manufacturing apparatus 100 is roughly composed of a forming roll unit 11, a pitch filling roll unit 12, and a shaping roll unit 13. Although not shown, a supply roller around which a belt-like fin member 10 is wound is disposed on the upstream side of the forming roll unit 11, and the fin member 10 set on the supply roller is fed to a feed (not shown). It is configured to be pulled out by a roll or the like and continuously sent to the forming roll unit 11.

  The forming roll unit 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 formed on the surfaces of these forming rolls 11a and 11b, respectively, as shown in the partially enlarged view of FIG. ing. By fitting the formed teeth 110a and 110b at predetermined intervals and supplying the fin member 10 between the rolls while being driven to rotate in the direction of the arrow, the fin member 10 has a corrugated shape (hereinafter referred to as a first shape) as shown in FIG. It is formed into a corrugated shape. The formed teeth 110a and 110b have a fin height lower than a target corrugated shape of fin height and fin pitch (hereinafter referred to as a target corrugated shape) so that the fin member 10 does not break during molding. The pitch of the mountain is set to be wide.

  The pitch filling roll unit 12 includes a pair of upper and lower pitch filling rolls 12a and 12b. On the surface of these pitch filling rolls 12a and 12b, molding teeth 120a and 120b are formed as shown in the partial enlarged view of FIG. Has been. As shown in FIG. 3, the fin member 10 discharged from the upstream forming roll portion 11 has a corrugated shape in which the fin top portions are pressed against each other by being temporarily dammed on the inlet side of the pitch filling roll portion 12. (Hereinafter referred to as the second corrugated shape). In the second corrugated shape, each fin top has a substantially semicircular shape. In this state, when the pitch filling rolls 12a and 12b are driven to rotate in the direction of the arrow, the crest portions of the forming teeth 120a and 120b enter between the pressed fin top portions, and the trough portions separate the fin top portions while holding the fin top portions over the entire surface. To do. Thereby, fin top parts isolate | separate in an exit side, and it becomes a corrugated shape where fin pitch is wider than a 2nd corrugated shape (henceforth a 3rd corrugated shape).

  Here, if the fin top portion is moved while being partially pressed, the fin member 10 may be deformed. However, in this embodiment, as shown in FIG. 3, the fin tops are separated from each other while pressing the fin tops over the entire surface, so that the deformation of the fin member 10 can be prevented.

  The shaping roll section 13 is composed of a pair of upper and lower shaping rolls 13a and 13b, and molding teeth 130a and 130b are formed on the surfaces of the shaping rolls 13a and 13b, respectively, as shown in the partially enlarged view of FIG. Has been. The peak portions of the formed teeth 130a and 130b enter between the fin tops of the fin member 10 formed in the third corrugated shape, and pull the fins in the transport direction. In other words, the fins having the third corrugated shape at the stage of being discharged from the pitch filling roll unit 12 are pulled between the pitch filling roll 12 and the shaping roll unit 13 by synchronously driving each roll unit. Finally, it is conveyed in a state of being stretched to substantially the same pitch as the pitch of the forming teeth 130a, 130b formed on the shaping rolls 13a, 13b. Thus, when the forming roll unit 11, the pitch filling roll unit 12, and the shape forming roll unit 13 are driven synchronously, one fin is ejected from the pitch forming roll unit 12 every time one fin is ejected from the pitch filling roll unit 12. Mountains will be discharged. And the fin member 10 discharged | emitted from the shaping roll part 13 is shape | molded in the final target corrugated shape by the fin pitch which was pulled shrink | contracted with a spring restoring force.

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

  Next, the fin guides 14 and 15 will be described.

  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, skewing in the thickness direction and the width direction of the fin member 10 is suppressed, and Fin guides 14 and 15 for separating the fin member 10 from the formed teeth formed on the roll are arranged.

  FIG. 5 is an exploded perspective view showing the configuration of the fin guides 14 and 15. Here, although the fin guide 14 arrange | positioned between the shaping | molding roll part 11 and the pitch filling roll part 12 is demonstrated, the basic structure is the same also about the fin guide 15. FIG.

  The fin guide 14 includes a plurality of fin pressing plates 140 stacked in the width direction of the fin member 10, a plurality of spring plates 141 stacked between the fin pressing plates 140, and both ends of the fin member 10 in the width direction. And a fin side face holding plate 142 attached to the head.

  The fin pressing plate 140 is a guide member for suppressing the skew of the fin member 10 in the vertical direction (thickness direction), and is laminated with every other spring plate 141 interposed therebetween. The fin presser plate 140 is formed with two positioning holes 140a penetrating in the stacking direction.

  Since the fin pressing plate 140 can suppress the fin member 10 from escaping in the vertical direction when performing pitch packing, particularly between the forming roll unit 11 and the pitch packing roll unit 12, the fin tops can be securely connected to each other. Can be pressed against.

  The spring plate 141 is a guide member for separating the fin member 10 from the forming teeth 110a, 110b, 120a, 120b of each roll. In the forming teeth of each roll shown in FIG. 5, a plurality of grooves are formed along the roll circumference for fitting with the tip of the spring plate 141. In other words, the forming teeth 110a and 110b of the forming rolls 11a and 11b have four grooves 111a and 111b at positions where they are fitted to the tip of the spring plate 141, and the forming teeth 120a of the pitch filling rolls 12a and 12b. In 120b, four groove portions 121a and 121b are formed at positions where they are fitted to the tip portion of the spring-out plate 141, respectively. Each jumping plate 141 has two positioning holes (not shown) penetrating in the stacking direction.

  By disposing the protruding plate 141, the fin member can be reliably separated from the formed tooth even when the formed tooth of each roll and the fin member 10 are fixed.

  The fin side pressing plates 142 are guide members for suppressing the skew of the fin member 10 in the lateral direction (width direction), and are disposed at both ends of the integrated block in the width direction. In addition, positioning holes 142 a communicating with the positioning holes formed in the fin pressing plate 140 and the jumping plate 141 are formed in four positions on the fin side pressing plate 142.

  Since this fin side surface pressing plate 142 can suppress the fin member 10 from escaping in the left-right direction when performing pitch packing especially between the forming roll unit 11 and the pitch packing roll unit 12, It is possible to ensure pressure contact.

  As shown in FIG. 5, fin pressing plates 140 and jumping plates 141 are alternately stacked to form a block, fin side pressing plates 142 are attached to both sides of the block, and bolts 143 are passed through four positioning holes. The fin guide 14 is completed by fastening with the nut 144. An internal space (conveyance path) for allowing the fin member 10 to pass therethrough is formed between the blocks arranged vertically.

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

  First, the forming roll 11a (or other rolls) is lifted upward, and the flat fin member 10 is passed to the vicinity of the exit of the shaping roll unit 13. Then, as shown in FIG. 1, the forming roll 11a (or other rolls) is returned to a fixed position, and the forming rolls 11a and 11b of the forming roll unit 11 are rotationally driven in the arrow direction. Thereby, as shown in FIG. 2, the fin member 10 is shape | molded by the 1st corrugated shape (primary shaping | molding process). At this time, the rolls of the pitch filling roll unit 12 and the shape forming roll unit 13 are stopped.

  The portion of the fin member 10 formed in the first corrugated shape eventually reaches the pitch filling roll section 12 and abuts between the pitch filling rolls 12a and 12b. Thereafter, when the forming rolls 11a and 11b are further driven to rotate, the fin member 10 formed in the first corrugated shape is temporarily dammed on the inlet side of the forming roll part 11, and the fin discharging force from the forming roll part 11 As a result, the tops of the fins are pressed together to form a second corrugated shape (this process is called pitch packing). At this time, the pitch filling rolls 12a and 12b may be rotated by a predetermined angle in the arrow direction so that the second corrugated 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 corrugated portion is accumulated between the forming roll portion 11 and the pitch filling roll portion 12. And, at the stage where all the fin tops are pressed against each other between the forming roll part 11 and the pitch filling roll part 12, the forming roll part 11, the pitch filling roll part 12 and the shaping roll part 13 are driven synchronously, The fin members 10 are discharged from the roll portions to the downstream side one by one. After starting this synchronous driving, it is not necessary to temporarily dam the fin member 10 between the forming roll unit 11 and the pitch filling roll unit 12, and the first corrugated shape 1 discharged from the forming roll unit 11 is used. 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 corrugated shape one by one.

  As shown in FIG. 3, by the synchronous driving, in the forming teeth 120 a and 120 b formed on the pitch filling rolls 12 a and 12 b, the crests enter between the fin tops pressed against the fin member 10, and the troughs are the fin tops. The tops of the fins are separated from each other while being pressed on the entire surface, and formed into a third corrugated shape having a fin pitch wider than the second corrugated shape (secondary forming step).

  Subsequently, as shown in FIG. 4, the fin member 10 is pulled between the tops of the fins formed into the third corrugated shape by the forming teeth 130 a and 130 b of the shaping rolls 13 a and 13 b, so that the shaping rolls 13 a and 13 b It is conveyed in a state of being stretched to substantially the same pitch as the formed teeth 130a and 130b. Thereafter, the fin member 10 discharged from the shaping roll portion 13 has a reduced fin pitch and is formed into a target corrugated shape (tertiary forming step).

  According to the first embodiment, in the secondary forming step, the fin discharge force of the forming roll portion 11 is used to close the fin pitch until the fin tops are pressed against each other. Even when a large material is used, the peaks do not return after molding, and the fin shape can be made uniform. Therefore, there is no variation in the fin shape after pitch filling molding, and the corrugated fin can be molded into a desired shape.

  Further, in the manufacturing method disclosed in Japanese Patent Application Laid-Open No. 11-147149, the fin forming is provided with four steps, and among these, the shape is formed by pulling the fins in two steps. However, in this embodiment, since the shape forming process can be reduced by one process, the production line can be shortened.

  Also, fin pitch packing molding (corrugated plate height> corrugated plate pitch) can be processed, fins become dense and the material area per volume of the metal carrier increases, so when using the catalyst in the same area, The volume can be reduced, and the metal carrier can be downsized. Further, since the angle formed by the flat plate and the corrugated plate after molding is increased, the propagation of the compression force is increased, the drawing process at the time of manufacturing the carrier is omitted, and the brazing characteristics by diffusion bonding can be improved.

  Furthermore, the number of turns is reduced by increasing the height of the corrugated plate, the number of fillets formed by the flat plate and the corrugated plate per unit area of the carrier material is reduced, and the amount of catalyst can be reduced.

  Next, as Example 2, a configuration example in which the forming teeth of the pitch filling roll are divided-type forming pieces will be described.

  FIG. 6 is an exploded perspective view illustrating the configuration of the pitch filling roll according to the second embodiment. Hereinafter, the same parts as those in the first embodiment will be described with the same reference numerals. Here, only the characteristic configuration of the second embodiment will be described, and illustration and description of the configuration common to the first embodiment will be omitted as appropriate.

  The pitch filling roll portion according to the present embodiment is configured by a pitch filling roll 22a and a pitch filling roll 22b having the same configuration as the pitch filling roll 22a. Hereinafter, the configuration will be described on behalf of the pitch filling roll 22a.

  The pitch filling roll 22a includes a pair of piece placement rolls 220 and a plurality of forming pieces 240 held between the piece placement rolls.

  The piece arrangement roll 220 includes a shaft 221 supported by a roll holding stand, which will be described later, and an attachment support portion 222 to which a piece attachment 223 having a substantially concave cross section is attached. A groove 222 a is formed on one surface of the attachment support portion 222, and the piece attachment 223 fitted in the groove 222 a is connected by a bolt 225. For this reason, the piece attachment 223 can be easily replaced by removing the bolt 225.

  Further, a plurality of convex portions 224 are arranged on one side of the piece attachment 223 along the circumference. The number of the convex portions 224 is selected according to the R shape of the fin top portion to be pitch-packed (hereinafter referred to as fin shape as appropriate). That is, the pitch for arranging the molding pieces 240 is obtained from the R-shaped dimension value of the fin top portion that fits between the tooth tips of the molding piece 240 and the plate thickness of the fin member 10, and the number of convex portions 224 arranged on the piece attachment 223 is calculated. decide. In addition, the minimum number and the maximum number of the convex part 224 which can be arrange | positioned at the piece attachment 223 are calculated | required uniquely according to the thickness of a fin, or R shape of a fin top part, and can be changed within the range.

  Here, the shape of the molding piece 240 will be described. 7A and 7B are explanatory views showing the shape of the molding piece 240, where FIG. 7A is a front view when viewed from one end in the longitudinal direction, and FIG. 7B is a partial side view showing the shape of the end (end on one side). Part only).

  Forming teeth 241 are formed on one side edge of the forming piece 240 along the longitudinal direction thereof. In the cross-sectional shape of the molded tooth 241, reference numeral 241a indicates a peak portion, and reference numeral 241b indicates a valley portion. In addition, an engaging groove 242 that engages with the piece attachment 223 is formed at both ends in the longitudinal direction. A hole 243 to be inserted is provided. The shapes and dimensions of the molding pieces 240 mounted on the piece attachments 223 having the same diameter are the same regardless of the number of the convex portions 224 arranged. Even when the piece attachments 223 are replaced, the shaping pieces 240 are used in common. be able to.

  As an example, when the fin thickness is 20 to 50 μm and the radius of the fin top portion to be pitch-packed is R 0.2 to 0.35, the width a of the crest portion 241a of the forming tooth 241 is 0.04 to 0.1 mm. The height b of the peak portion 241a is 0.1 mm, the height c of the peak portion 241a and the valley portion 241b is 0.3 mm, the width d of the molded tooth body is 0.5 mm, and the radius e of the valley portion 241b is R0.2 is desirable. That is, by manufacturing the molding piece 240 as described above, the molding piece 240 can be used as a common component within a range where the fin thickness is 50 μm and the fin top radius is R0.2 to 0.35.

  By mounting a predetermined number of forming pieces 240 between the piece arrangement rolls 220 configured as described above, it is possible to obtain pitch filling rolls 22a and 22b having a plurality of forming teeth 241 on the roll surface. The pitch filling rolls 22a and 22b are arranged as the pitch filling roll unit 22 as shown in FIG. In this embodiment, the grooves 121a and 121b (FIG. 5) on the roll surface are omitted.

  The pitch filling rolls 22a and 22b are attached to a pitch filling roll holding stand 200 as shown in FIG. This pitch filling roll holding stand 200 is installed as the pitch filling roll section 12 in the corrugated fin manufacturing apparatus 100 shown in FIG.

  The pitch filling roll holding stand 200 shown in FIG. 9 includes a stand base 201 and roll holding stands 202 and 203 installed at both ends thereof. On the stand base 201, positioning keys 201a and 201b for installing the roll holding stands 202 and 203 at fixed positions are provided. The roll holding stands 202 and 203 are configured to be movable in the left-right direction in the figure on the stand base 201, and are not shown in the state where the roll holding stands 202 and 203 are abutted to the positions of the positioning keys 201a and 201b. It is fixed by etc. The shafts 221 of the pitch filling rolls 22a and 22b are rotatably supported by bearings (not shown) provided on the roll holding stands 202 and 203. Each shaft 221 is supplied with power for rotational driving from a driving mechanism (not shown).

  When assembling the pitch filling rolls 22a and 22b by mounting a plurality of forming pieces 240 on the pair of piece arrangement rolls 220, the roll holding stand 203 is fixed at the position of the positioning key 201b as shown in FIG. Then, a not-shown hole (243) provided at one end of the forming piece 240 is fitted into a not-shown protruding portion (224) of the piece arrangement roll 220 supported above and below the roll holding stand 203, and the forming piece 240 is inserted. The state is supported on one side. Next, while moving the roll holding stand 202 in the direction of the arrow, a not-shown hole (not shown) provided at the other end of the forming piece 240 is formed on the convex portion 224 of the piece arrangement roll 220 supported above and below the roll holding stand 202. 243) is inserted to form a roll shape, and as shown in FIG. 9B, the roll holding stand 202 is abutted and fixed to the position of the positioning key 201a. One end of the molding piece 240 is inserted into the piece arrangement roll 220 supported above and below the roll holding stand 202, and then the roll holding stand 203 is supported above and below the roll holding stand 203 while moving in the left direction in the figure. The other end of the molding piece 240 may be fitted into the piece placement roll 220 thus formed.

  Next, fin pitch packing by the pitch packing rolls 22a and 22b will be described.

  FIG. 10 is a cross-sectional view corresponding to the line AA in FIG. 8 (partial contour lines are omitted). The fin member 10 supplied between the pitch stuffing rolls 22a and 22b is temporarily dammed on the inlet side of the pitch stuffing roll part 22, and has a second corrugated shape in which the fin top parts are pressed against each other. In this state, when the pitch filling rolls 22a and 22b are rotationally driven in the direction of the arrow, the crest portion 241a of the forming tooth 241 enters between the tops of the pressed fins, and the trough portion 241b is finned together with the trough portion 241b of the adjacent forming tooth 241. The tops of the fins are separated from each other while pressing the tops almost over the entire surface. Thereby, fin top parts isolate | separate in an exit side, and it becomes a 3rd corrugated shape with a fin pitch wider than a 2nd corrugated shape.

  In this way, the pitch pitching rolls 22a and 22b of the present embodiment can be filled with the fin pitch until the fin tops are in pressure contact with each other as in the pitch packing rolls 12a and 12b of the first embodiment. Even when a material having a large repulsive force is used, the peaks do not return after molding, and the fin shape can be made uniform. Therefore, there is no variation in the fin shape after pitch filling molding, and the corrugated fin can be molded into a desired shape. In addition, since the fin tops are separated from each other while the adjacent valley parts are pressed on almost the entire surface of the fins, the deformation of the fin member 10 can be prevented.

  By the way, in the pitch filling roll in which the roll surface is processed and the forming teeth are provided like the pitch filling rolls 12a and 12b of the first embodiment, the fin pitch filling amount (compression amount) in the pitch filling processing is always constant. Therefore, when it is desired to change the fin shape, it is necessary to replace the fin shape with a dedicated pitch filling roll having molding teeth that conform to the R shape. For this reason, when manufacturing a plurality of types of fins having different fin shapes, it is necessary to prepare as many pitch filling rolls as the number of the types, which increases the manufacturing cost.

  On the other hand, in the pitch filling rolls 22a and 22b of the present embodiment, the pitch between the forming pieces 240 (fin pitch during processing) can be changed depending on the number of forming pieces 240 attached to the piece attachment 223. That is, by replacing the piece attachment 223 and increasing / decreasing the number of forming pieces 240, the amount of fin pitch stuffing in the pitch stuffing process can be changed. Therefore, a dedicated pitch stuffing roll is provided according to the fin shape. Even if it is not prepared, the forming teeth of the pitch filling rolls 22a and 22b can be freely changed according to the R shape of the fin top.

  In this embodiment, a plurality of piece attachments 223 are prepared according to the fin shape. However, since the piece arrangement roll 220 and the forming piece 240 can be used as a common part, a dedicated piece is used according to the fin shape. The manufacturing cost can be reduced as compared with the case of manufacturing a pitch filling roll.

  In the present embodiment, the convex portion 224 provided on the piece attachment 223 is configured to be fitted into the hole 243 of the forming piece 240. However, as shown in the partial perspective view of FIG. The convex portions 244 provided at the both end portions may be configured to be fitted into a plurality of hole portions 226 provided on one surface of the piece attachment 223 (only one end portion is shown in FIG. 11).

  In each of the above embodiments, the corrugated fin manufacturing apparatus used for the radiator core such as a heat exchanger and the corrugated fin manufacturing method using the manufacturing apparatus have been described, but the present invention is not limited to these applications. It can be applied to other industrial products using corrugated fins.

The schematic block diagram of the corrugated fin manufacturing apparatus concerning an Example. The elements on larger scale of a forming roll part. The elements on larger scale of a pitch packing roll part. The elements on larger scale of a shaping roll part. The disassembled perspective view which shows the structure of a fin guide. FIG. 6 is an exploded perspective view illustrating a configuration of a pitch filling roll according to the second embodiment. (A) is a front view when the molding piece is viewed from one end in the longitudinal direction. (B) is the partial side view which shows the shape of the edge part of a shaping | molding piece. FIG. 9 is a perspective view showing the arrangement of pitch filling rolls according to the second embodiment. (A), (b) is explanatory drawing which shows attachment of the pitch packing roll in a pitch packing roll holding stand. Sectional drawing equivalent to the AA line of FIG. The fragmentary perspective view which shows the other structure of a piece attachment and a shaping | molding piece.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Fin member 11 ... Forming roll part 11a, 11b ... Forming roll 12 ... Pitch filling roll part 12a, 12b ... Pitch filling roll 13 ... Shape shaping roll part 13a, 13b ... Shape shaping roll 14, 15 ... Fin guide 100 ... Corrugated Fin manufacturing apparatus 140 ... Fin pressing plate 141 ... Bounce plate 142 ... Fin side pressing plate 200 ... Roll holding stand 201 ... Stand base 201a, 201b ... Positioning key 202, 203 ... Roll holding stand 220 ... Piece arrangement roll 221 ... Shaft 222 ... Attachment support part 222a ... Groove 223 ... Frame attachment 224 ... Convex part 226 ... Hole part 240 ... Molding piece 241 ... Molding tooth 242 ... Engaging groove 243 ... Hole part 244 ... Convex part

Claims (12)

A pair of forming rolls (11a, 11b) for forming a belt-like fin member (10) continuously conveyed into a first corrugated shape;
The fin tops of the fin member (10) discharged from the pair of forming rolls (11a, 11b) are pressed against each other to form a second corrugated shape, and the fin tops pressed against the fin member (10) are separated from each other. And a pitch stuffing roll pair (12a, 12b) having a third corrugated shape having a wider fin pitch than the second corrugated shape,
A shaping roll pair (13a, 13b) for shaping the fin member (10) discharged from the pitch filling roll pair (12a, 12b) into a target corrugated shape;
A corrugated fin manufacturing apparatus comprising:   The pair of pitch filling rolls (12a, 12b) has formed teeth (120a, 120b) for separating the fin tops from each other while pressing the fin tops of the fin member (10) molded into the second corrugated shape over the entire surface. The corrugated fin manufacturing apparatus according to claim 1.   The corrugated fin manufacturing apparatus according to any one of claims 1 and 2, further comprising first pressing means (140) that suppresses the skew of the fin member (10) in the thickness direction.   The corrugated fin manufacturing apparatus according to any one of claims 1 to 3, further comprising second pressing means (142) that suppresses the skew of the fin member (10) in the width direction.   The corrugated fin manufacturing apparatus according to any one of claims 1 to 4, further comprising a spring-out means (141) for separating the fin member (10) from the forming tooth of each pair of rolls. A corrugated fin manufacturing method using the corrugated fin manufacturing apparatus according to claim 1,
A primary forming step of forming a fin member into a first corrugated shape by the forming roll pair (11a, 11b);
Between the forming roll pair (11a, 11b) and the pitch filling roll pair (12a, 12b), the fin corrugated portions of the fin member (10) formed in the first corrugated shape are pressed against each other to form a second corrugate. And the tops of the fin members (10) that are press-contacted by the pair of pitch stuffing rolls (12a, 12b) are separated to form a third corrugated shape having a wider fin pitch than the second corrugated shape. The next molding process,
A tertiary forming step of forming the fin member (10) into a target corrugated shape by the shape forming roll pair (13a, 13b);
A method for producing a corrugated fin, comprising:   In the secondary forming step, only the forming roll pair (11a, 11b) is driven, and the fin member (10) discharged from the forming roll pair (11a, 11b) is used as the pitch filling roll pair (12a, 12b). The fin top part of the fin member (10) shape | molded by the said 1st corrugated shape is press-contacted by temporarily damming in the inlet side of this, It is set as a 2nd corrugated shape. Corrugated fin manufacturing method.   After the fin member (10) is formed into a second corrugated shape in the secondary forming step, the forming roll pair (11a, 11b), the pitch filling roll pair (12a, 12b), and the shaping roll pair (13a, The corrugated fin manufacturing method according to claim 7, wherein the fin members (10) are discharged to the downstream side one by one by synchronously driving 13b).   The pitch stuffing roll pair is a molded tooth (241) that separates the tops of the fins at the crest (241a) while pressing the tops of the fins (10) formed into the second corrugated shape with the trough (241b). And a pair of piece arrangement rolls (220) for supporting both ends of the plurality of shaping pieces (240). Corrugated fin manufacturing equipment. The pair of piece arrangement rolls (220) includes a piece attachment (223) in which a plurality of convex portions (224) are arranged along the circumference on one side, and the piece attachment (223) is attached to and detached from the piece arrangement roll body. Can be attached,
The said shaping | molding piece (240) has a hole part (243) engaged with the said convex part (224) of the said piece attachment (223) in the both ends of a longitudinal direction, The Claim 9 characterized by the above-mentioned. Corrugated fin manufacturing equipment. The pair of piece arrangement rolls (220) includes a piece attachment (223) having a plurality of holes (226) arranged along the circumference on one side, and the piece attachment (223) is attached to and detached from the piece arrangement roll body. Can be attached,
The said shaping | molding piece (240) has a convex part (244) engaged with the said hole part (226) of the said piece attachment (223) in the both ends of a longitudinal direction, It is characterized by the above-mentioned. Corrugated fin manufacturing equipment. When the thickness of the fin member (10) is 50 μm and the radius of the fin top is R0.2 to 0.35, the molding piece (240) has a width of the crest portion (241a) of the molding tooth (241). 0.1 mm, the height of the crest portion (241a) is 0.1 mm, the total height of the crest portion (241a) and the trough portion (241b) is 0.3 mm, the width of the molded tooth body is 0.5 mm, The corrugated fin manufacturing apparatus according to any one of claims 9 to 11, wherein a radius of the valley portion (241b) is set to R0.2.

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