JP2016147306A - Manufacturing method of metal plate with groove - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a metal plate with a groove which hardly thins a thickness of the metal plate on a groove part.SOLUTION: A plurality of roller forming molds 20 each having a protrusion type roller 25 and a recess type roller 22 making a pair are arranged in a flow direction of a flat plate shaped metal plate 1. The metal plate is caused to pass between the protrusion type roller 25 and the recess type roller 22 forming a pair, and a groove part 41 continuing in the flow direction is formed stepwise on the metal plate by the plurality of roller forming molds 20. A clearance of the protrusion type roller 25 and the recess type roller 22 making a pair is formed smaller toward the downstream in the flow direction of the metal plate. An interval between protrusion parts 23 adjoining to each other and an interval between recess parts 24 adjoining to each other are respectively formed smaller toward the downstream in the flow direction of the metal plate. The groove part 41 is formed such that the metal plate is sandwiched by the protrusion part 23 and the recess part 24 making a pair.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a method for manufacturing a grooved metal plate used as a metal siding surface plate, a metal building material, or the like.

  Conventionally, a plurality of grooves are formed on a flat metal plate with a plurality of forming rolls. For example, in Patent Document 1, a reference roll having an unevenness perpendicular to the roll axis direction in the circumferential direction of the roll circumferential surface and a forming roll are arranged to face each other, and a steel sheet is sandwiched between the reference roll and the forming roll. By doing this, it is described that the concave and convex grooves are formed in the steel plate. Then, the concave and convex grooves are formed in multiple stages by gradually increasing the depth and width of the concave and convex grooves using a plurality of molding rolls having different concave and convex dimensions.

Japanese Patent No. 4700393

  However, in the invention described in Patent Document 1, since the steel sheet of the portion sandwiched between the unevenness of the reference roll and the unevenness of the forming roll is formed into the uneven groove while being stretched, the steel sheet becomes thin at the uneven groove portion, There was a problem that the strength decreased.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a method for manufacturing a grooved metal plate capable of forming a grooved metal plate in which the thickness of the metal plate in the groove portion is difficult to be reduced. To do.

  In the manufacturing method of a grooved metal plate according to the present invention, a plurality of roll forming dies having a pair of convex and concave rolls are arranged in the flow direction of a flat metal plate, and the metal plate is the pair. In the manufacturing method of the grooved metal plate, the grooved portion that is passed between the convex roll and the concave roll and is formed stepwise by the plurality of roll forming dies in the metal plate in the flow direction. A plurality of convex portions are formed side by side in the axial direction, and a plurality of concave portions are formed side by side in the concave roll, and the clearance between the pair of convex rolls and the concave roll is the same as that of the metal plate. The distance between the adjacent convex portions and the distance between the adjacent concave portions are formed smaller toward the downstream in the flow direction of the metal plate. versus The metal plate is sandwiched between the convex roll and projections and recesses of the concave roll of characterized in that it is formed by.

  In the present invention, the roll forming die is preferably formed by providing a plurality of split rolls having at least one convex portion or the concave portion.

  In the present invention, it is preferable that the plurality of divided rolls arranged in the axial direction have the same shape for each roll forming die.

  In this invention, it is preferable that the some division | segmentation roll which shape | molds the same groove part between the said some roll shaping | molding die is the same shape.

  In this invention, it is preferable to adjust the space | interval of the adjacent convex part and the space | interval of the adjacent recessed part by providing a spacer between the adjacent division | segmentation rolls.

  In this invention, it is preferable to adjust the space | interval of the adjacent convex part and the space | interval of the adjacent recessed part respectively on the basis of the convex part or recessed part near the center of the axial direction of the convex roll and the concave roll.

  In the present invention, the shape and the number of the groove portions are adjusted by the number of the plurality of roll forming dies, the clearance between the pair of convex and concave rolls, the interval between the adjacent convex portions, and the interval between the adjacent concave portions. It is preferable to do.

  In the present invention, at least in the second and subsequent roll forming dies, by setting a reference split roll, and forming other split rolls excluding this reference split roll so as to be slidable in the axial direction, It is preferable that an interval necessary for adjusting the interval between the adjacent convex portions and the interval between the adjacent concave portions is provided between the slidable split rolls.

  In the present invention, the clearance between the pair of convex rolls and concave rolls is formed smaller toward the downstream in the flow direction of the metal plate, and the interval between the adjacent convex portions and the interval between the adjacent concave portions are respectively The groove is formed smaller as it goes downstream, and the groove is formed by sandwiching the metal plate between a pair of convex and concave portions. Even if the width dimension is gradually increased, it becomes difficult to apply a force that the metal plate is rolled at the convex portion or the concave portion, and a grooved metal plate in which the thickness of the metal plate at the groove portion is sufficiently secured is provided. can get.

FIG. 1 is a schematic view showing a metal siding manufacturing apparatus. FIG. 2 is a schematic view showing an example of a roll forming apparatus. FIG. 3 is a front view showing an example of a roll forming die. 4A is a cross-sectional view showing a forming state of the metal plate at the first stage, FIG. 4B is a cross-sectional view showing a forming state of the metal plate at the second stage, and FIG. 4C is a cross-sectional view of the metal plate at the third stage. It is sectional drawing which shows a shaping | molding state. 5A is a cross-sectional view showing an unformed flat metal plate, FIG. 5B is a cross-sectional view showing the metal plate after being formed in the first stage, and FIG. 5C is a metal plate after being formed in the second stage. FIG. 5D is a cross-sectional view showing the metal plate after being formed in the third stage. 6A is a cross-sectional view showing a part of the metal plate after being formed in the first stage, FIG. 6B is a cross-sectional view showing a part of the metal plate after being formed in the second stage, and FIG. It is sectional drawing which shows a part of metal plate after shape | molding by the 3rd stage. FIG. 7A is a cross-sectional view showing an example of the real part of the molded metal siding, and FIG. 7B is a cross-sectional view showing an example of the real part of the molded metal siding.

  Hereinafter, modes for carrying out the present invention will be described.

  FIG. 1 shows a metal siding manufacturing apparatus. This manufacturing apparatus includes an uncoiler 100, a roll forming apparatus 101, a take-up apparatus 102, a sink forming apparatus 103, a resin supply apparatus 104, a back sheet supply apparatus 105, a heating furnace 106, a marking apparatus 107, a cutting apparatus 108, and a stacking apparatus 109. doing.

  As shown in FIG. 2, the roll forming apparatus 101 includes a preforming roll portion 130 including a plurality of roll forming dies 20 and a plurality of embossing rolls 131. The plurality of roll forming dies 20 are arranged side by side in the flow direction (traveling direction) P of the metal plate 1. Although three roll forming dies 20 are shown in FIG. 2, it is not limited to this. The three roll forming dies 20 are arranged in the order of a first roll forming die 201, a second roll forming die 202, and a third roll forming die 203 from the upstream side to the downstream side in the flow direction P of the metal plate 1. Are lined up.

  As shown in FIG. 3, the roll mold 20 includes a pair of convex rolls 25 and concave rolls 22. The convex roll 25 and the concave roll 22 are opposed to each other up and down to form a pair. The axial direction of the convex roll 25 and the axial direction of the concave roll 22 are parallel to each other. The axial direction of the convex roll 25 and the axial direction of the concave roll 22 are orthogonal to the flow direction P of the metal plate 1.

  The convex roll 25 has a convex portion 23. The convex portion 23 is formed so as to protrude from the peripheral surface of the convex roll 25. The convex portion 23 is continuously formed over the entire length in the circumferential direction centering on the axial direction. The convex roll 25 has a plurality of convex portions 23. The plurality of convex portions 23 are arranged at predetermined intervals in the axial direction.

  The concave roll 22 has a concave portion 24. The recessed portion 24 is formed to be recessed on the peripheral surface of the recessed roll 22. The recess 24 is formed continuously over the entire length in the circumferential direction centering on the axial direction. The concave roll 22 has a plurality of concave portions 24. The plurality of recesses 24 are arranged in the axial direction with a predetermined interval.

  In the convex roll 25 and the concave roll 22 forming a pair, the number of the convex portions 23 of the convex roll 25 and the number of the concave portions 24 of the concave roll 22 are the same. One concave portion 24 is opposed to one convex portion 23.

  The convex roll 25 includes a rod-shaped shaft member 55 and a plurality of split rolls 26. The split roll 26 is formed as a convex split roll 26 provided with a ring-shaped mounting portion 30 and one convex portion 23. The convex portion 23 is formed so as to protrude from one side end portion of the surface of the mounting portion 30. The convex portion 23 is formed over the entire length of the mounting portion 30 in the circumferential direction. A plurality of convex portions 23 may be provided on one mounting portion 30. The convex split roll 26 is attached by inserting the mounting portion 30 into the shaft member 55.

  The concave roll 22 includes a rod-shaped shaft member 28 and a plurality of split rolls 29. The split roll 29 is formed as a concave split roll 29 provided with a ring-shaped mounting portion 30 and one concave portion 24. The recess 24 is formed to be recessed at one side end of the surface of the mounting portion 30. The recess 24 is formed over the entire length of the mounting portion 30 in the circumferential direction. A plurality of the recesses 24 may be provided in one mounting part 30. The concave split roll 29 is attached by inserting the mounting portion 30 into the shaft member 28.

  As shown in FIG. 4A and FIG. 4B, the convex rolls 25 are arranged so that the spacers 58 are provided between the adjacent convex split rolls 26 and the interval between the adjacent convex split rolls 26 is adjusted. The interval between the portions 23 is formed to be adjustable. The concave roll 22 is formed such that the spacer 57 is provided between the adjacent concave split rolls 29 and the interval between the adjacent concave split rolls 29 is adjusted, so that the interval between the adjacent concave portions 24 can be adjusted. The spacers 57 and 58 are formed by thin plate rings and are provided by being inserted into the shaft members 55 and 28. In accordance with the number of spacers 57 and 58 used, the interval between adjacent convex portions 23 and the interval between adjacent concave portions 24 are adjusted stepwise.

  The plurality of convex split rolls 26 used in the first roll forming die 201 can all have the same shape. The plurality of concave split rolls 29 used in the first roll forming die 201 can all have the same shape. Similarly, the plurality of convex split rolls 26 used in the second roll forming mold 202 can all have the same shape, and the plurality of concave split rolls used in the second roll forming mold 202. All 29 can have the same shape. Further, the plurality of convex split rolls 26 used in the third roll forming die 203 can all have the same shape, and the plurality of concave split rolls 29 used in the third roll forming die 203 are All can have the same shape.

  As the plurality of convex split rolls 26 used in the first roll forming die 201, a plurality of types having different shapes of the convex portions 23 may be used. Further, as the plurality of concave split rollers 29 used in the first roll forming die 201, a plurality of types having different shapes of the concave portions 24 may be used. Similarly, as the plurality of convex split rolls 26 used in the second roll forming die 202, a plurality of types having different shapes of the convex portions 23 may be used, or used in the second roll forming die 202. As the plurality of concave split rolls 29, a plurality of types having different shapes of the recesses 24 may be used. Further, as the plurality of convex split rolls 26 used in the third roll forming die 203, a plurality of types having different shapes of the convex portions 23 may be used, or used in the third roll forming die 203. As the plurality of concave split rolls 29, a plurality of types having different shapes of the concave portions 24 may be used. In this case, the plurality of convex split rolls 26 forming the same groove portion between the plurality of roll forming dies 201, 202, and 203 have the same shape. That is, the convex split roll 26 provided on the first roll forming die 201, the convex split roll 26 provided on the second roll forming die 202, and the convex split roll provided on the third roll forming die 203. 26 has the same shape when the groove is formed at the same position in the width direction of the metal plate (the direction perpendicular to the flow direction P of the metal plate and the same as the axial direction). In other words, the convex split rolls 26 having the same shape are provided on the first roll forming die 201, the second roll forming die 202, and the third roll forming die 203, respectively, so as to be aligned in the flow direction P of the metal plate. ing. Similarly, the plurality of concave split rolls 29 that form the same groove portion between the plurality of roll forming dies 201, 202, and 203 have the same shape. That is, the concave split roll 29 provided in the first roll forming die 201, the concave split roll 29 provided in the second roll forming die 202, and the concave split roll 29 provided in the third roll forming die 203 are as follows: When the grooves are formed at the same position in the width direction of the metal plate, they have the same shape. That is, the concave split rolls 29 having the same shape are provided with the first roll forming mold 201, the second roll forming mold 202, and the third roll forming mold 203 so as to be aligned in the flow direction P of the metal plate. Yes.

  The first roll forming die 201, the second roll forming die 202, and the third roll forming die 203 are formed with different clearances (intervals) between the pair of convex roll 25 and concave roll 22 and are adjacent to each other. The intervals between the convex portions 23 and the intervals between adjacent concave portions 24 are formed differently. The clearance (interval) between the pair of convex rolls 25 and concave rolls 22 is formed to be smaller toward the downstream in the flow direction P of the metal plate 1. That is, the clearance C1 between the convex roll 25 and the concave roll 22 in the first roll mold 201 is the largest, and the clearance C2 between the convex roll 25 and the concave roll 22 in the second roll mold 202 is the first roll. The clearance C3 between the convex roll 25 and the concave roll 22 in the third roll forming mold 203 is the smallest as compared with the case of the mold 201. Further, the interval between the adjacent convex portions 23 and the interval between the adjacent concave portions 24 are each formed smaller toward the downstream of the flow direction P of the metal plate 1. That is, the interval H1 between the adjacent convex portions 23 and the interval H1 between the adjacent concave portions 24 in the first roll forming die 201 is the largest, and the interval between the adjacent convex portions 23 and the adjacent concave portions 24 in the second roll forming die 202 are the same. The interval H2 is smaller than that of the first roll forming die 201, and the interval between the adjacent convex portions 23 and the interval H3 between the adjacent concave portions 24 in the third roll forming die 203 are the smallest.

  The adjustment of the interval between the adjacent convex portions 23 is preferably based on the convex portion 231 near the center of the convex roll 25 in the axial direction. The adjustment of the interval between the adjacent concave portions 24 is preferably based on the concave portion 241 near the center of the concave roll 22 in the axial direction. Thereby, the position of the convex part 231 and the recessed part 241 in the first roll forming die 201, the position of the convex part 231 and the concave part 241 in the second roll forming mold 202, and the convex part 231 in the third roll forming mold 203 are obtained. And the position of the concave portion 241 are arranged in a substantially straight line in the flow direction P of the metal plate 1.

  The adjustment of the interval between the adjacent convex portions 23 is set with reference to the convex split roll 261 having the convex portion 231 near the center of the convex roll 25 in the axial direction, except for the convex split roll 261 serving as the reference. The plurality of convex split rolls 26 are provided so as to be slidable with respect to the shaft member 55 in the axial direction, and the plurality of convex split rolls are slidable at intervals necessary for adjusting the interval between the adjacent convex portions 23. 26 between them. In addition, the adjustment of the interval between the adjacent concave portions 24 is set with reference to the concave split roll 291 having the concave portion 241 near the center in the axial direction of the concave roll 22, and a plurality of other than the concave split roll 291 serving as the reference is set. The concave split roll 29 is provided so as to be slidable with respect to the shaft member 28 in the axial direction, and the interval necessary for adjusting the interval between the adjacent concave portions 24 is provided between the plurality of concave split rolls 29 capable of sliding movement. To. Such a structure that can adjust the interval between the adjacent convex portions 23 and the adjacent concave portions 24 is preferably provided in at least the second roll forming die 202 or the third roll forming die 203. It is possible to adjust the interval between the adjacent convex portions 23 and the adjacent concave portions 24 of the second roll forming die 202 and the third roll forming die 203 with reference to the first roll forming die 201. Of course, the first roll forming die 201 is provided with the same structure as the second roll forming die 202 and the third roll forming die 203 so that the intervals between the adjacent convex portions 23 and the adjacent concave portions 24 can be adjusted. May be.

  The flat metal plate 1 is formed stepwise in order by the first roll forming die 201, the second roll forming die 202, and the third roll forming die 203, so that the grooved metal plate 4 is formed. It is formed. That is, the flat metal plate 1 as shown in FIG. 5A is formed in the first stage by the first roll forming die 201, and the metal plate 2 having the shallow groove portion 21 is formed as shown in FIG. 5B. Next, the metal plate 2 having the shallow groove portion 21 is second-stage formed by the second roll forming die 202 to form the metal plate 3 having the groove portion 31 deeper than the shallow groove portion 21 as shown in FIG. 5C. Is done. Next, the metal plate 3 having the groove portion 31 deeper than the shallow groove portion 21 is formed in the third stage by the third roll forming die 203 to have a groove portion 41 deeper than the groove portion 31 as shown in FIG. 5D. A metal plate 4 is formed.

  As shown in FIG. 4A, when the metal plate 2 having the groove 21 is formed, the metal plate 1 is introduced between the convex roll 25 and the concave roll 22 of the first roll forming die 201, and the convex portion 23. And the recess 24 are deformed into the groove 21. As shown in FIG. 4B, when the metal plate 3 having the groove 31 is formed, the metal plate 2 is introduced between the convex roll 25 and the concave roll 22 of the second roll forming die 202, and the convex portion 23. And the recess 24 are deformed into the groove 31. As shown in FIG. 4C, when the metal plate 4 having the groove 41 is formed, the metal plate 3 is introduced between the convex roll 25 and the concave roll 22 of the third roll forming die 203, and the convex portion 23. And the recess 24 are deformed into the groove 41.

  6A to 6C show changes in the thickness of each part of the groove part 21a, the groove part 31a, and the groove part 41a, and changes in the thicknesses of each part of the groove part 21b, the groove part 31b, and the groove part 41b. In this case, the groove portion 21a is formed so that the thickness T21a is 1.3 mm, the groove portion 31a has a thickness T31a of 2.1 mm, and the groove portion 41a has a thickness T41a of 2.9 mm. Further, the groove portion 21b is formed such that the thickness T21b is 1.3 mm, the groove portion 31b has a thickness T31b of 2.1 mm, and the groove portion 41b has a thickness T41b of 3.3 mm. In addition, the numerical value of the said thickness T21a, T31a, T41a and T21b, T31b, T41b is an example, and is not limited to these.

  Below, the manufacturing method of metal siding is demonstrated.

  As shown in FIG. 1, a coil 110 is attached to the uncoiler 100. The coil 110 is formed by winding a long flat metal plate 1 in a roll shape. A long flat metal plate 1 is continuously conveyed substantially horizontally from the uncoiler 100 to the roll forming apparatus 101. In this case, the long metal plate 1 flows continuously from the uncoiler 100 to the roll forming apparatus 101 while being unwound from the coil 110. In the preforming roll section 130 of the roll forming apparatus 101, a plurality of roll forming dies 20 form grooves continuously in the long metal plate 1 flowing from the uncoiler 100. Thereby, a grooved metal plate is formed. The grooved metal plate is embossed by an embossing roll 131. The embossed metal plate is taken from the roll forming device 101 by the take-up device 102 and then continuously conveyed to the sink forming device 103. In the steel forming apparatus 103, the real part is formed at both side end portions (end portions in a direction orthogonal to the flow direction P of the metal plate 1) of the grooved metal plate. For example, a real part 45 having a cross-sectional shape as shown in FIG. 7A is formed at one end of the grooved metal plate 4, and a real part 45 having a cross-sectional shape as shown in FIG. 7B is formed at the other end of the grooved metal plate 4. A portion 46 is formed. The real part 45 and the real part 46 are formed in a shape that can be fitted. The metal plate on which the real part is formed is continuously conveyed from the sane forming device 103 to the resin supply device 104. In the resin supply device 104, a resin such as urethane resin is supplied to the upper surface of the metal plate on which the real part is formed. The metal plate supplied with the resin is continuously conveyed to the back sheet supply device 105. In the back sheet supply device 105, the back sheet 111 is continuously supplied so as to cover the upper surface of the resin supplied onto the metal plate. The metal plate supplied with the back sheet 111 is continuously conveyed to the heating furnace 106. In the heating furnace 106, the resin between the metal plate and the back sheet 111 is foamed by heating. The heating furnace 106 is provided with a pair of upper and lower conveyor devices, and is conveyed while being heated while the metal plate, the resin, and the back sheet 111 are sandwiched between the pair of conveyor devices. Then, the resin foam, the metal plate, and the back sheet 111 are integrated by the adhesive force of the resin. The integrated product of the resin foam, the metal plate, and the back sheet 111 is continuously conveyed from the heating furnace 106 to the marking device 107. In the marking device 107, a lot number or the like is marked on an integrated product of the resin foam, the metal plate 1, and the back sheet 111. The integrated product of the resin foam, the metal plate 1 and the back sheet 111 is continuously conveyed from the marking device 107 to the cutting device 108, where the integrated product is cut into a predetermined length, and the metal siding 113 is formed. Thereafter, a plurality of metal sidings 113 are sequentially loaded on the loading device 109 and sent to the next process.

  In such a metal siding manufacturing apparatus, the shape and number of the groove portions of the grooved metal plate are the number of the plurality of roll forming dies 20 (the number of steps), the clearance between the pair of convex rolls 25 and the concave rolls 22, and adjacent to each other. It adjusts with the space | interval of the convex part 23, and the space | interval of the adjacent recessed part 24. FIG. Thereby, the metal plate with a groove | channel which has various design properties is formed.

1, 2, 3, 4 Metal plate 20 Roll forming mold 22 Concave roll 23 Convex part 24 Concave part 25 Convex roll 26, 29 Split roll 57, 58 Spacer

Claims (8)

A plurality of roll forming dies having a pair of convex rolls and concave rolls are arranged in the flow direction of a flat metal plate, and the metal plate is passed between the pair of convex rolls and concave rolls, In the method of manufacturing a grooved metal plate, wherein the groove portion continuous in the flow direction of the metal plate is formed stepwise with the plurality of roll forming dies,
A plurality of convex portions are formed in the convex roll side by side in the axial direction,
A plurality of recesses are formed in the concave roll side by side in the axial direction,
The clearance between the pair of convex roll and concave roll is formed smaller toward the downstream of the flow direction of the metal plate,
An interval between the adjacent convex portions and an interval between the adjacent concave portions are each formed smaller toward the downstream in the flow direction of the metal plate,
The groove part is formed by sandwiching the metal plate between the convex roll and the concave part of the concave roll and the concave part, and the grooved metal plate manufacturing method.   The method for manufacturing a grooved metal plate according to claim 1, wherein the roll forming die is formed by providing a plurality of divided rolls having at least one of the convex portions or the concave portions.   The method for manufacturing a grooved metal plate according to claim 2, wherein the plurality of divided rolls arranged in the axial direction have the same shape for each of the roll forming dies.   The method for producing a grooved metal plate according to claim 2, wherein the plurality of divided rolls for forming the groove portion between the plurality of roll forming dies have the same shape.   The grooved metal plate according to any one of claims 2 to 4, wherein a spacer is provided between the adjacent divided rolls to adjust an interval between the adjacent convex portions and an interval between the adjacent concave portions. Method.   The distance between the adjacent convex portions and the distance between the adjacent concave portions are respectively adjusted based on a convex portion or a concave portion near the center in the axial direction of the convex roll and the concave roll. The manufacturing method of the metal plate with a groove | channel as described in any one of Claims 5.   The shape and number of the groove portions are adjusted by the number of the plurality of roll forming dies, the clearance between the pair of convex and concave rolls, the interval between the adjacent convex portions, and the interval between the adjacent concave portions. The manufacturing method of the metal plate with a groove | channel as described in any one of Claim 1 thru | or 6.   In at least the second and subsequent roll forming molds, a reference split roll is set, and other split rolls excluding the reference split roll are formed so as to be slidable in the axial direction. The space | interval required when adjusting the space | interval of a part and the space | interval of the said adjacent recessed part is provided between the said division | segmentation rolls which can be slid, respectively. Manufacturing method of metal plate with groove.

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