JP6560804B1 - Corrugated plate forming method and manufactured product by the method - Google Patents

Abstract

The present invention provides a corrugated sheet forming method capable of performing corrugation processing of deep corrugations while preventing breakage of the material and having less deformation of the material. A step of arranging a steel plate (6) so as to be in contact with a peripheral surface of a gear roll (1) and a steel plate (6) by a projection plate (4) at a position aligned with a valley (3) of the gear roll (1). Is pushed into the trough (3) of the gear roll (1) and bent, and the steel roll (6) is fed by rotating the gear roll (1), and then the trough (3) of the projection plate (4) and the gear roll (1). Are aligned with each other, a C process in which the steel plate (6) is pushed into the trough (3) of the gear roll (1) by the projection plate (4) and bent, and a G process in which the C process is repeated to form a corrugated sheet. [Selection] Figure 1

Description

  The present invention relates to a corrugated plate forming method and an article manufactured by the method.

  Conventionally, corrugation processing for forming a relatively shallow waveform on a metal plate has been performed. As a method of corrugating, press working is known.

  Press work is a processing method in which a material is formed into a shape of a mold tool by sandwiching the material between a pair of mold tools and applying a strong force. The press working has the advantage that the productivity is very high compared with other processing methods, and the generation of scrap can be reduced.

  One example of press working is hydroforming. Hydroforming is a processing method in which a metal is formed by applying a high hydraulic pressure in a mold tool. Hydroforming has the advantage that it can be bent slowly under high pressure.

  However, there has been a problem that deformation of the material occurs even when the bending process is slowly performed by the hydroforming process. If the waves were deep, damage could occur. This will be described with reference to FIGS.

  FIG. 12 is a diagram for explaining changes in thickness and deformation of planar dimensions when hydroforming is performed on a metal plate. Among these, FIG. 12A is a view of the corrugated plate viewed in parallel with the ridgeline of the wave. FIG.12 (b) is the figure seen from the orthogonal | vertical direction with respect to the main surface of a corrugated sheet.

  In the hydroforming process of FIG. 12, a metal plate is press-formed with a continuous corrugated mold tool.

  In FIGS. 12A and 12B, the end of the portion where the waveform continues is shown as C, the center is shown as A, and the portion between the center A and the end C is shown as the middle portion B.

  The arrow in Fig.12 (a) has shown the movement of the metal plate. During the hydroforming process, the central portion A of the metal plate extends by pulling the metal from both sides. On the other hand, the intermediate part B is pulled with a part of the metal from the central part A, but extends by pulling a part of the metal from the end part C. The end portion C is affected by the central portion A and the intermediate portion B, and breaks when the metal plate becomes thin and the ductility of the metal plate is exceeded, such as when the wave is deep.

  FIG. 12B is a view as seen from the direction perpendicular to the main surface of the corrugated sheet, and shows that the plane dimension of the metal sheet is deformed by hydroforming.

  Since the metal plate is thinned by bending, the surrounding metal is drawn in as a reaction. As described above, metal is drawn from both ends of the continuous portion of the waveform, and metal is also drawn from both ends of the ridgeline of the wave. For this reason, as shown in FIG.12 (b), the center part A deform | transforms most and the width | variety is narrow. The intermediate part B is continuously narrowed between the central part A and the end part C.

  FIG. 13 shows changes in the shape of the waveform. FIG. 13 is a view of two bent corrugated plates as viewed parallel to the ridgeline of the wave. The upper corrugated plate has a large wave, and the lower corrugated plate has a small wave.

  As shown in FIG. 13, the curvature ridgeline of the ridgeline of the wave at the center of the corrugated plate is large. In contrast, the ridgeline of the wave at the end of the corrugated plate has a small curvature x1. This tendency is the same whether the wave is large or small.

  In the press working with the mold tool, the longer the wave is continuous, the more the deformation becomes. Focusing on this, press working with a short wave sequence has been proposed.

  FIG. 14 shows a method of repeatedly forming a waveform with a mold tool having a small number of waveforms (three in the example of FIG. 14).

  14A, 14B, 14C, and 14D show waveform shaping in time series. Among these, Fig.14 (a) has shown the flat metal plate before a process.

  FIG. 14B shows a state in which initial molding is performed with the mold tool 101 having three waveforms. In FIG. 14B, the waveform is repeatedly formed while the mold tool 101 is moved. In addition, in the initial shaping | molding of FIG.14 (b), it shapes roughly with the waveform shallower than the design waveform.

  FIG. 14C shows an annealing process. After the initial molding, annealing is performed to improve the workability of the material.

  FIG. 14D shows finish molding. In finish molding, a finish mold tool 102 having a continuous waveform having a design dimension is used. In finish molding, a deep waveform on the design is formed.

  Patent Document 1 proposes a technique in which the crest and trough portions of a metal thin plate do not break. The method for forming a metal thin plate disclosed in Patent Document 1 is a method of corrugating by passing a metal plate between a pair of gears that rotate in mesh with each other. In Patent Document 1, the gear teeth have a smooth shape and the drive side gear and the driven side gear have different curvatures.

JP 2001-113325 A

  According to the technique of Patent Document 1, the material breakage may be improved.

  However, when a deep wave is applied, the material sometimes breaks.

  Here, the deep wave eyes are the depth of the wave, for example, the depth equal to or more than the wave width, for example, the depth / wave width is 0.6 to 2.0 (preferably the depth / wave width is 0.8). ~ 1.8). Speaking of the relationship between the plate thickness and the wave width, the plate thickness / wave width is 1/20 to 1/5 (preferably the plate thickness / wave width is 1/15 to 1/8). Moreover, the plate | board thickness of the board material made into object is 0.6 mm-5 mm (preferably 0.8 mm-3 mm). In addition, a normal tin plate steel plate is 0.25 mm, and a polycarbonate is 0.7 mm.

  In the technique of Patent Document 1, the tip portion of the gear is formed with a smooth curve or chamfered, but the steel plate is pressed while being pulled by the gear, so the crest and trough of the formed corrugated steel plate It was inevitable that the thickness of the portion was thinner than the other portions of the corrugated steel sheet.

  The present invention has been made in view of the above problems, and provides a corrugated sheet forming method capable of performing corrugation processing with a deep corrugation while preventing breakage of the material and having less deformation of the material. For the purpose.

The corrugated plate forming method according to the present invention is, for example,
A step of arranging the steel plate so as to contact the peripheral surface of the gear roll;
B step of pushing and bending the steel plate into the gear roll trough by a protruding plate at a position aligned with the gear roll trough;
C step of rotating the gear roll to feed the steel plate, and then pushing and bending the steel plate into the gear roll trough by the projection plate at a position where the projection plate and the trough of the gear roll are aligned;
And D step of forming a corrugated sheet by repeating the C step.

Another corrugated plate forming method of the present invention is, for example,
The steel plate is bent at the top of one gear roll crest and the bottom of the other gear roll trough, and the steel plate is inserted between a pair of gear rolls capable of parallel movement of the steel plate at other portions of the gear teeth. Process,
F step of rotating the gear roll and bending the steel plate while allowing the steel plate to be supplied toward the bent portion in the process of bending the steel plate at the top of one gear roll crest and the bottom of the other gear roll valley; ,
And a G step of forming a corrugated sheet by repeating the F step.

Another corrugated plate forming method of the present invention is, for example,
The steel plate is bent at the top of one gear crest and the bottom of the other gear trough, and the steel plate is inserted between a gear roll and a rack gear capable of parallel movement of the steel plate at the other part of the gear teeth. Process,
Rotating the gear roll, or translating the rack gear, or both, feeding the steel plate and allowing the steel plate to be fed toward the bent part in the process of bending the steel plate Bending J process,
And a K process for forming the corrugated sheet by repeating the J process.
You may make it have the process of forming a waveform in a part of steel plate by press work first.

  The gear roll or the rack gear has a bevel gear-like tooth row, and the tooth pitch at one end is smaller than that at the other end, so that the pitch on one end side of the ridge line is larger than the pitch on the other end side. A small corrugated plate may be formed.

  A cylindrical corrugated plate may be formed by different sizes and shapes of gear teeth of the gear roll or the rack gear.

An initial bending process for roughly shaping into a design waveform;
You may make it have the finishing process shape | molded to the design dimension after the said initial bending process.

  The initial bending step may be performed by pressing.

  The initial bending step may be molding by the gear roll or the rack gear.

  The shaping with the gear roll or the rack gear may be performed at least once each of normal rotation and reverse rotation of the gear roll or parallel movement of the rack gear.

  The finishing step may be performed by pressing.

  You may make it have an annealing process after the said initial bending process.

  The finishing step may include a curing process and polishing.

  The finishing step may be formed into a polygonal cylinder as a whole.

  The cooking plate according to the present invention can be manufactured by the corrugated plate forming method.

  The cooking baking plate may have an oil drain hole or an air outflow hole.

  The cooking knife according to the present invention can be manufactured by the corrugated plate forming method.

  The draining plate according to the present invention can be manufactured by the corrugated plate forming method.

  The soap table according to the present invention can be manufactured by the corrugated plate forming method.

  The table base material according to the present invention can be manufactured by the corrugated plate forming method.

  The fan-shaped corrugated sheet according to the present invention can be manufactured by the corrugated sheet forming method.

  The annular corrugated sheet according to the present invention can be manufactured by the corrugated sheet forming method.

  The heat radiating plate according to the present invention can be manufactured by the corrugated plate forming method.

  The cylindrical member for heat dissipation or heat reception according to the present invention can be manufactured by the corrugated plate forming method.

  The polygonal cylindrical member for heat dissipation or heat reception according to the present invention can be manufactured by the corrugated plate forming method.

  ADVANTAGE OF THE INVENTION According to this invention, the fracture | rupture of a raw material can be prevented, the corrugation processing of a deep wave can be performed, and the corrugated sheet forming method with few deformations of a raw material can be provided.

It is explanatory drawing which showed the corrugated sheet formation method by one Embodiment of this invention. It is explanatory drawing which showed 1 process of the corrugated sheet formation method by 2nd embodiment of this invention. It is explanatory drawing which showed 1 process of the corrugated sheet formation method by 2nd embodiment of this invention. It is explanatory drawing which showed 1 process of the corrugated sheet formation method by 2nd embodiment of this invention. It is explanatory drawing which showed 1 process of the corrugated sheet formation method by 2nd embodiment of this invention. It is explanatory drawing which showed the blade for cooking and manufacturing method by one Embodiment of this invention. It is a perspective view of the baking plate by one Embodiment of this invention. It is a perspective view of the draining board or soap stand or heat sink by one Embodiment of this invention. It is a perspective view of the corrugated sheet or fan-shaped corrugated sheet from which pitch width differs on both sides of the ridgeline of a wave by one Embodiment of this invention. It is a side view of the wave gear roll which shape | molds the corrugated sheet from which pitch width differs on both sides of the ridgeline of the wave by one Embodiment of this invention. It is a perspective view of the cylindrical member for heat dissipation or heat receiving by one Embodiment of this invention. It is explanatory drawing which showed the mode of the deformation | transformation of thickness and a plane dimension when performing a hydroforming process to a metal plate by a prior art. It is explanatory drawing which showed the shape change of the waveform when performing a hydroforming process to a metal plate by a prior art. It is explanatory drawing which showed the prior art which repeatedly shape | molds with the metal mold tool which has a few waveforms. It is explanatory drawing which showed the corrugated sheet formation method by the gear roll and rack gear by one Embodiment of this invention. It is explanatory drawing which showed the corrugated sheet formation method of the steel plate which has different thickness by one Embodiment of this invention.

  Examples of embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 shows a corrugated steel sheet forming method according to an embodiment of the present invention.

  Each of the following embodiments can form a deep waveform. A deep waveform is a depth equal to or greater than the wave width, for example, a depth / wave width of 0.6 to 2.0 (preferably a depth / wave width of 0.8 to 1.8). Speaking of the relationship between the plate thickness and the wave width, the plate thickness / wave width is 1/20 to 1/5 (preferably the plate thickness / wave width is 1/15 to 1/8). The plate thickness of the plate material is 0.6 mm to 5 mm (preferably 0.8 mm to 3 mm).

  FIG. 1A shows a step of forming the first bent portion, and FIG. 1B shows a step of repeatedly forming the bent portion.

  1A and 1B, reference numeral 1 denotes a gear roll. The gear roll 1 has a length in a direction perpendicular to the paper surface of FIG. 1, a plurality of tooth rows are formed on the outer peripheral surface, and has a peak 2 and a valley 3.

  A projection plate 4 is provided above the gear roll 1. The protrusion plate 4 also has a length in a direction perpendicular to the paper surface of FIG. 1 and has a protrusion 5 that aligns with the valley 3 of the gear roll 1 at the lower end.

  The code | symbol 6 has shown the steel plate which is a raw material. The material of the material is not limited to steel, and metals including noble metals such as stainless steel, brass, copper, aluminum, titanium, gold and silver, or some processable resins can be employed. In the following description of each embodiment, a description will be given using a steel plate as a representative, but the material of the material is not limited to steel, as in the present embodiment.

  Reference numerals 7 and 8 indicate an upper roller 7 and a lower roller 8 for feeding the steel plate 6.

  First, the steel plate 6 is disposed so as to contact the peripheral surface of the gear roll 1. When the first bent portion (wave wave) is formed, the steel plate 6 is pushed into the trough 3 of the gear roll 1 by the protruding plate 4 at a position aligned with the trough 3 of the gear roll 1 as shown in FIG. Thereby, the steel plate 6 is bent into the shape of the valley 3 of the gear roll 1 by the projection plate 4.

  When the first bending is performed, as the steel plate 6 is pushed into the trough 3 of the gear roll 1, a steel material corresponding to the contraction margin of the steel plate is fed from both sides.

  Here, the shrinkage allowance is a shrinkage portion of the steel material generated by pulling in the surrounding steel material as a reaction that is thinned by bending the steel plate 6. In the case of pressing with a corrugated mold tool, the bent portion is restrained, and the steel plates are pulled between adjacent bent portions. As a result, there is no supply of steel from the surroundings, and the thinning of the steel increases. On the other hand, in the bending of the present embodiment, at least one side of the bent portion is free, and at least a part of the shrinkage allowance of the steel material is supplied. Thereby, thickness reduction of steel materials can be suppressed.

  In addition, since it is difficult to calculate the shrinkage allowance due to bending, the determination is usually based on experiments or experience.

  For this reason, the steel plate 6 is supplied with a predetermined length cut in advance.

  After the first bent portion is formed, the gear roll 1 is rotated and the steel plate 6 is fed. Next, at the position where the projection plate 4 and the trough 3 of the gear roll 1 are aligned, the steel plate 6 is pushed into the trough of the gear roll 1 by the projection plate 4 and the steel plate 6 is bent.

  Thereafter, the step of rotating the gear roll 1 to feed the steel plate 6 and then pushing the steel plate 6 into the valley 3 by the projection plate 4 at a position where the projection plate 4 and the valley 3 of the gear roll 1 are aligned is repeated. As a result, a continuous waveform is formed.

  According to the corrugated sheet forming method according to FIG. 1, since the steel plate 6 is not restrained between the bent portions adjacent to each other when the steel plate 6 is bent, the thinning of the steel plate 6 can be suppressed.

  2-5 has shown each process of the corrugated sheet formation method by 2nd embodiment.

  The corrugated sheet forming method of the present embodiment has a pair of gear rolls 9 and 10, and the steel plate 11 is inserted between the gear rolls 9 and 10.

  A gear tooth row is formed on the outer peripheral surface of the gear roll 9, and peaks 12 and valleys 13 are formed. Similarly, gear teeth are formed on the outer peripheral surface of the gear roll 10, and peaks 14 and valleys 15 are formed.

  The gear roll 9 and the gear roll 10 are meshed at an equal pitch, and when the peak of the peak 12 of the gear roll 9 and the bottom of the valley 15 of the gear roll 10 are closest (or before and after), the thickness of the steel plate 11 or less. A slightly smaller gap is created. At this time, the other portions of the teeth of the gear roll 9 and the gear roll 10 have a gap slightly larger than the thickness of the steel plate 11, and the parallel movement of the steel plate 11 (movement in a direction perpendicular to the thickness direction) becomes possible. Yes.

  The shape of the teeth can be realized, for example, by forming a portion where the teeth of the gear roll 9 and the gear roll 10 are occluded by removing from the involute teeth 1/2 or more of the thickness of the steel plate 11.

  As shown in FIG. 2, initially, the steel plate 11 is fed toward the gear rolls 9 and 10 by the upper roller 16 and the lower roller 17, and the tip portion is inserted between the teeth of the gear roll 9 and the gear roll 10 and bent. .

  At this time, the steel plate 11 is not restrained between the teeth of the gear roll 9 and the gear roll 10, but is bent by the shape and rotation of the teeth.

  As shown in FIG. 3, when the apex of the peak 12 of the gear roll 9 and the bottom of the valley 15 of the gear roll 10 are closest, the thickness of the steel plate 11 is slightly smaller than that at the closest point. Therefore, the steel plate 11 is captured and the steep bent portion is bent without slipping.

  At this time, the other portions of the teeth of the gear roll 9 and the gear roll 10 have gaps slightly larger than the thickness of the steel plate 11, and the parallel movement of the steel plate 11 is possible. For this reason, the shrinkage allowance of the steel plate 11 accompanying bending is supplied toward the bending part. Thereby, the in-plane tension | pulling does not arise in the steel plate 11, but thickness reduction can be suppressed to the minimum.

  Subsequently, the gear roll 9 and the gear roll 10 are continuously rotated to form the second bent portion as shown in FIG. At this time, the trough 13 of the gear roll 9 and the crest 14 of the gear roll 10 are closest to each other, and the steel plate 11 is captured to form the steep bent portion. At this time, in a portion other than the valley 13 and the mountain 14 that are engaged, the steel plate 11 can be translated without restraining the steel plate 11. For this reason, the in-plane tension | tensile_strength does not arise in the steel plate 11 similarly, but thickness reduction can be suppressed to the minimum.

  At this time, the third bent portion is shallowly bent by the shape and rotation of the teeth of the gear roll 9 and the gear roll 10. This third folded portion is then finally folded again by the peaks 12 of the gear roll 9 and the valleys 15 of the gear roll 10.

  FIG. 5 shows a state where the bending of FIGS. The state of FIG. 5 shows that the tenth bent portion is formed. At this time, on the upstream side in the feeding direction of the steel plate 11, the next twelfth bent portion is bent shallowly. On the other hand, on the downstream side in the feed direction of the steel plate 11, the folded corrugated steel plate 11 is discharged without interfering with the teeth of the gear roll 9 and the gear roll 10.

  In addition, the gear rolls 9 and 10 can be rotated in one direction first, and after sending the steel plate 11 as shown in FIGS. 2-5, the gear rolls 9 and 10 can be rotated in the reverse direction. Thereby, a bending part can be fixed.

  Moreover, when providing the connection part (straight line part) of the handle of a kitchen knife, for example on the right and left or one side of the waveform, it can be formed by forming the waveform from a certain position and taking out the gear rolls 9 and 10 by reverse rotation. .

  Further, the gear rolls 9 and 10 may be structured such that, for example, the upper gear roll 9 is movable upward, and the molded product can be taken out by lifting upward.

  When the steel plate 11 is thick, it may be difficult to insert the steel plate 11 between the gear rolls 9 and 10 first. In that case, the corrugation can be formed at the end of the steel plate 11 or the intermediate portion by press working first. Thereby, it becomes easy to insert the steel plate 11. Note that the waveform initially formed by pressing may be a shallow waveform.

  When the corrugation is provided at the intermediate portion or the like, the corrugation can be provided at the required portion by rotating the gear rolls 9 and 10 to the right and left.

The gear roll has a structure in which the upper gear roll 9 is movable upward, for example, the upper gear roll 9 is lifted upward, the steel plate 11 is set between the gear rolls 9 and 10, and the upper gear roll 9 is returned downward to set the molding. I can do it.
FIG. 15 shows a rack gear 10a as the lower gear roll.

  After the steel plate 11 is placed on the rack gear 10a and the upper gear roll 9 and the rack gear 10a are engaged, the upper gear roll 9 rotates counterclockwise, or the rack gear 10a translates rightward in FIG. By performing both, the steel plate 11 moves rightward and a waveform is formed.

  Another aspect of the present embodiment is a manufacturing method having an initial bending process and a finishing process.

  FIG. 6 shows a cooking blade 18 according to an embodiment of the present invention and a method for manufacturing the same.

  FIG. 6A shows the plane and side surfaces of the cooking blade 18.

  As shown in FIG. 6A, the cooking blade 18 has a grip portion 19 and an action portion 20. The action part 20 is composed of a steel plate 21 bent into a continuous waveform.

  In the state of the finished product, the steel plate 21 has a core 22 formed at the base end portion and is inserted into the grip portion 19. Moreover, the front-end | tip part of the steel plate 21 is formed in the gentle circular arc shape.

  FIG. 6B shows a part of the manufacturing method of the steel plate 11.

  The action part 20 of the present embodiment first performs an initial bending step of roughly forming a designed waveform. Thereafter, a finishing process such as molding to the designed dimensions is performed.

  The initial bending process is performed for the purpose of attaching a waveform pattern. On the other hand, the finishing process is performed for the purpose of forming the final shape of the waveform. In the finishing process, the joint portion of the grip portion 19 is formed, the tip portion of the action portion 20 is finished, polished, hardened, and the like.

  At least one of the initial bending process and the finishing process can be corrugated using a pair of gear rolls. As shown by arrows M1 and M2 in FIG. 6B, the corrugation processing by the gear roll can be performed at least once each for normal rotation and inversion of the gear roll.

  Further, at least one of the initial bending process and the finishing process can be performed by pressing.

Furthermore, the workability of the material can be improved by performing annealing after the initial bending step.
FIG. 16 shows a steel plate 40 having cross-sections (steps) with different thicknesses and one of the corresponding gear rolls. In FIG. 16, only the lower gear roll 41 is shown, but a similar gear roll exists on the upper side.

  The gear roll 41 and the upper gear roll (not shown) have stepped portions having different outer diameters so as to match different thickness sections of the steel plate 40.

  By using such a steel plate 40 having cross sections with different thicknesses, for example, when manufacturing a wave blade knife with a thin tip, there is an effect that distortion of the thin portion is not generated.

  FIG. 7 shows a perspective view of the cooking pan 23 according to one embodiment of the present invention. The cooking plate 23 is composed of a steel plate 25 that is bent into a waveform in which the main body 24 is continuous. A frame 26 is provided around the steel plate 25. The frame 26 can be omitted as appropriate. A plurality of oil drain holes 27 are provided in the vicinity of the valleys of the steel plate 25. The oil drain hole 27 can be omitted depending on the purpose. For example, the oil drain hole 27 is omitted when it is not desired to drop the oil into the fire.

  Although not shown, a gas flame from below or an air outflow hole through which air flows may be provided. As a result, it is possible to obtain a smooth air and gas flow, to adjust the proper combustion of the gas, and to adjust the flow of smoke.

  In manufacturing the baking plate 23 for cooking, first, an oil drain hole 27 is provided in the steel plate 25 and an initial bending process is performed in which the corrugated plate is roughly formed. Next, a finishing process is performed so as to obtain a designed waveform. In this case, the finishing process may include flattening the corrugated steel sheet that has been entirely curved by the initial bending process, polishing, rust prevention treatment, and non-sticking processing.

  In at least one of the initial bending process and the finishing process, it may be possible to perform a corrugation process with a pair of gear rolls, the gear roll can be reversed at least once, or at least one of the initial bending process and the finishing process is pressed. As in FIG. 6, it is possible to perform the above process and to perform the annealing process.

  FIG. 8 shows a draining board 28 or a soap table 29 or a heat sink according to an embodiment of the present invention.

  The draining board 28 and the soap table 29 of the present embodiment are made of a steel plate 31 bent into a corrugated shape in which the main body 30 is continuous. A frame 32 is provided around the steel plate 31. The frame 32 can be omitted as appropriate. When used as the draining plate 28, the tableware or the like is placed on the steel plate 31 for easy drying. When used as the soap table 29, the soap is placed on the steel plate 31 to facilitate drying. When in use, the main body 30 can be slightly inclined so that water droplets can easily flow out.

  As in the case of FIG. 7, in the manufacture of the draining board 28 or the soap table 29, an initial bending process in which the steel plate 31 is roughly formed into a corrugated shape is first performed, and then a finishing process is performed so as to obtain a corrugated design. be able to.

  In at least one of the initial bending process and the finishing process, it may be possible to perform a corrugation process with a pair of gear rolls, the gear roll can be reversed at least once, or at least one of the initial bending process and the finishing process is pressed. The ability to perform the above and the ability to perform the annealing are the same as in the case of FIGS.

  In addition, the steel plate 31 processed into the waveform has good heat dissipation, and can be used as a heat sink for computers and electronic devices. When used as a heat sink, a carbon material may be applied or pasted. Further, plating such as gold may be performed. Further, the corrugated steel plate 31 may be used as a table base.

  FIG. 9 is a perspective view of a fan-shaped corrugated sheet 33 according to an embodiment of the present invention, and FIG. 10 is a side sectional view of gear rolls 34 and 35 for manufacturing the fan-shaped corrugated sheet 33.

  Each of the gear roll 34 and the gear roll 35 has a substantially truncated cone shape like a bevel gear, and a tooth row is formed along the generatrix of the outer peripheral surface of the cone. The cross sections of each tooth row have similar tooth shapes. The teeth of each dentition are small on the small diameter side of the truncated cone and large on the large diameter side of the truncated cone, and increase linearly while maintaining a similar relationship. Thereby, the gear pitch of the one end part of the gear rolls 34 and 35 is formed small compared with the other end part.

  By inserting a steel plate between the gear rolls 34 and 35 and rotating the gear rolls 34 and 35, the fan-shaped corrugated plate 33 can be formed in which the pitch on one end side of the wave ridge line is smaller than the pitch on the other end side. .

  The fan-shaped corrugated plate 33 can be used as a draining table or a table base material. Further, an annular corrugated plate may be formed by connecting a pair of 180-degree fan-shaped corrugated plates 33 or connecting ends of the fan-shaped corrugated plates 33 developed at 360 degrees.

  FIG. 11 shows a cylindrical corrugated plate 36 according to one embodiment of the present invention.

  By inserting the steel plate 37 between a pair of gear rolls having different tooth sizes and shapes, the steel plate 37 can be formed into a substantially cylindrical shape.

  That is, the gear roll teeth are changed in size and shape so that the curvature of the bent portion on one side of the main surface of the corrugated steel sheet 37 is larger or smaller than the curvature of the bent portion on the other side of the main surface. Thereby, the steel plate 37 can be made into a cylindrical corrugated steel plate as a whole.

  The cylindrical corrugated plate 36 can be formed by joining both ends of the corrugated steel plate that is cylindrical as a whole.

  As shown in FIG. 11, the cylindrical corrugated plate 36 can be attached to the outer periphery of a pipe 38 and used as a cylindrical member for heat dissipation or heat reception. Since the cylindrical corrugated plate 36 itself has high heat dissipation, it is suitable for cooling and heating the internal pipe 38 and the cylinder in the field of cooling and heating. Further, a heat exchange medium may flow between the cylindrical corrugated plate 36 and the pipe 38.

  Moreover, it is not limited to a cylindrical shape, and a corrugated steel plate having a rectangular tube shape or a polygonal tube shape as a whole can be obtained. Similar to the cylindrical corrugated plate 36, these corrugated steel plates can be used as polygonal cylindrical members for heat dissipation or heat reception.

1, 9, 10, 34, 35, 41: Gear roll 10a: Rack gear 2, 12, 14: Mountain 3, 13, 15: Valley 4: Projection plate 5: Projection 6, 11, 21, 25, 31, 37, 40 : Steel plate 7, 16: Upper roller 8, 17: Lower roller 18: Cooking blade 19: Gripping part 20: Action part 22: Core 23: Cooking plate 24, 30: Body part 26, 32: Frame 27: Oil drain hole 28: Drain plate 29: Soap stand 33: Fan corrugated plate 36: Cylindrical corrugated plate 38: Pipe 101: Mold tool 102: Finishing mold tool A: Center B: Intermediate part C: End x1 , X2: curvature

Claims (13)

A step of arranging the steel plate so as to contact the peripheral surface of the gear roll;
B step of pushing and bending the steel plate into the gear roll trough by a protruding plate at a position aligned with the gear roll trough;
C step of rotating the gear roll to feed the steel plate, and then pushing and bending the steel plate into the gear roll trough by the projection plate at a position where the projection plate and the trough of the gear roll are aligned;
D step of repeating the C step to form a corrugated sheet,
And a corrugated plate forming method. A corrugated plate forming method for forming corrugated plates for cooking,
The steel plate is bent at the top of one gear roll crest and the bottom of the other gear roll trough, and the steel plate is inserted between a pair of gear rolls capable of parallel movement of the steel plate at other portions of the gear teeth. Process,
F step of rotating the gear roll and bending the steel plate while allowing the steel plate to be supplied toward the bent portion in the process of bending the steel plate at the top of the peak of one gear roll and the bottom of the valley of the other gear roll. When,
A corrugated sheet forming method comprising: a G process of forming a corrugated sheet by repeating the F process. A corrugated plate forming method for forming corrugated plates for cooking,
The steel plate is bent at the top of one gear crest and the bottom of the other gear trough, and the steel plate is inserted between a gear roll and a rack gear capable of parallel movement of the steel plate at the other part of the gear teeth. Process,
Rotating the gear roll, or translating the rack gear, or both, feeding the steel plate and allowing the steel plate to be fed toward the bent part in the process of bending the steel plate Bending J process,
A corrugated sheet forming method comprising the step of repeating the step J to form a corrugated sheet. A corrugated sheet forming method according to any one of claims 2 and 3,
A corrugated sheet forming method comprising a step of first forming a corrugation in a part of a steel sheet by press working. A corrugated sheet forming method according to any one of claims 1 to 4 ,
An initial bending process for roughly shaping into a design waveform;
A corrugated sheet forming method comprising a finishing step of forming to a designed dimension after the initial bending step. The corrugated sheet forming method according to claim 5 ,
The corrugated sheet forming method, wherein the initial bending step is performed by pressing. The corrugated sheet forming method according to claim 5 ,
The initial bending step, corrugated forming method which is a molding according to the Giaro Le. The corrugated sheet forming method according to claim 7 ,
It said shaped by Giaro Le is corrugated form wherein the performing at least once the forward rotation and inversion of the gear rolls respectively. A corrugated sheet forming method according to claim 3,
  An initial bending process for roughly shaping into a design waveform;
  After the initial bending step, it has a finishing step for forming to a design dimension,
  The corrugated sheet forming method, wherein the initial bending step is molding by the rack gear. A corrugated sheet forming method according to claim 9,
  The forming with the rack gear is a corrugated plate forming method characterized in that the rack gear is translated at least once. A corrugated plate forming method according to any of claims 5 -10,
The corrugated sheet forming method, wherein the finishing step is performed by press working. A corrugated plate forming method according to any one of claims 5-11,
A corrugated sheet forming method comprising an annealing step after the initial bending step. It is a corrugated sheet formation method according to any one of claims 5 to 12,
The corrugated sheet forming method, wherein the finishing step includes curing treatment and polishing.

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