JP2014208357A - Manufacturing apparatus for modified cross section oblong member, and method of manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing apparatus for a modified cross section oblong member and a method of manufacturing the same, capable of suppressing occurrence of wrinkles caused by excessive material, for manufacturing a modified cross section oblong member of high quality.SOLUTION: A manufacturing apparatus 1 for a modified cross section oblong member P includes a plurality of roll pairs 30 arranged in the transportation direction of a plate material W, and manufactures an oblong member having a modified cross section shape by sequentially penetrating the plate material between the rolls of the plurality of roll pairs 30. At least one roll pair among the plurality of roll pairs 30 includes an inside roll 111 which abuts on an inside surface of the plate material W, and an outside roll 112 which abuts on an outside surface of the plate material W. The plate material W is pinched between the inside roll 111 and the outside roll 112. By transporting the plate material W by causing resistance against flow of material constituting the plate material W, an oblong member having a modified cross section shape is manufactured.

Description

  The present invention relates to an apparatus for manufacturing an irregular cross-section long member and a method for manufacturing the same.

  Conventionally, a roll forming technique is known as a technique for manufacturing a long member by deforming a plate material such as a steel plate (see, for example, Patent Document 1). By this roll forming, for example, a tubular long member is manufactured from a plate material such as a steel plate.

  FIG. 5 is a perspective view showing a configuration of a conventional roll forming apparatus 5. As shown in FIG. 5, in the roll forming apparatus 5, a plurality of roll pairs 50 are arranged in the conveying direction of the plate material W. The plurality of roll pairs 50 are configured such that the shape of the outer peripheral surface of each roll constituting the forming surface and the inclination angle of the outer peripheral surface gradually change toward the downstream in the conveying direction of the plate material W. Thereby, by sequentially passing the plate material W between the rolls of the plurality of roll pairs 50, the plate materials W1 to W5 in which the cross-sectional shape of the plate material W gradually changes as shown in FIG. A long member having a predetermined cross-sectional shape is manufactured.

JP 63-005825 A

  By the way, when a long member whose cross-sectional shape changes in the longitudinal direction (hereinafter referred to as “an irregular cross-sectional long member”) is manufactured by roll forming, molding defects are likely to occur in the vicinity of the portion where the cross-sectional shape changes. There was a problem. Specifically, as shown in FIG. 7, a deformed cross-section long member 200 that is reduced in diameter from a large-diameter portion 201 having a large-diameter cross-sectional shape to a small-diameter portion 202 having a small-diameter cross-sectional shape is manufactured by roll forming. In this case, there is a problem in that the flanges 220 around the portion 210 where the cross-sectional shape changes tend to cause wrinkles 230 due to the remainder of the material.

  The present invention has been made in view of the above, and an object of the present invention is to provide an apparatus for manufacturing an irregular cross-section long member that can suppress generation of wrinkles due to a surplus of material and can manufacture a high-quality irregular cross-section long member, and its manufacture. It is to provide a method.

  In order to achieve the above object, the present invention includes a plurality of roll pairs (for example, a plurality of roll pairs 30) arranged in the conveying direction of a plate material (for example, a plate material W described later), and each roll of the plurality of roll pairs. An apparatus for manufacturing an elongated cross-section long member that manufactures an elongated member having an irregular cross-sectional shape by sequentially passing the plate material therebetween (for example, an apparatus for manufacturing an irregular cross-section long member described later), At least one of the plurality of roll pairs includes an inner roll (for example, an inner roll 111 described later) that contacts the inner surface of the plate material and an outer roll (for example, an outer roll 112 described later) that contacts the outer surface of the plate material. ), And sandwiching the plate material between the inner roll and the outer roll, and conveying the plate material while causing resistance to the flow of the material constituting the plate material, form To produce an elongated member having to provide an apparatus for manufacturing a modified cross-section elongated member, wherein.

In the present invention, a plurality of roll pairs are arranged in the conveying direction of the plate material, and at least one of the plurality of roll pairs, an inner roll that contacts the inner surface of the plate material, and an outer roll that contacts the outer surface of the plate material, Consists of. Moreover, a deformed cross-section long member is manufactured by pinching a board | plate material between an inner side roll and an outer side roll, and conveying a board | plate material, producing resistance with respect to the flow of the material which comprises a board | plate material.
According to the present invention, the plate material is sandwiched between the inner roll and the outer roll, and the plate material is deformed while causing resistance to the flow of the material constituting the plate material. It is possible to control the flow of the material around the site where the cross-sectional shape changes. Therefore, according to this invention, generation | occurrence | production of the wrinkle resulting from the surplus in the periphery of the site | part which changes to cross-sectional shape can be suppressed, and a high quality irregular cross-section long member can be manufactured.

  It is preferable that the position of the rotation axis (for example, rotation axis X1 described later) of the inner roll is fixed, and the outer roll is movable in the rotation axis direction of the inner roll.

In this invention, while fixing the position of the rotating shaft of an inner roll, an outer roll can be moved to the rotating shaft direction of an inner roll.
According to this invention, an outer side roll can be moved to the rotating shaft direction of an inner side roll in the state which clamped the board | plate material with the inner side roll and the outer side roll. Thereby, since deformation can be performed while applying tension to the plate material, for example, it is possible to further control the flow of the material around the region where the cross-sectional shape of the large diameter changes to the cross-sectional shape of the small diameter. Therefore, according to this invention, the generation | occurrence | production of the wrinkles resulting from the excess in the periphery of the site | part which changes to a cross-sectional shape can be suppressed more, and a higher quality irregular cross-section elongate member can be manufactured.
Moreover, since deformation can be imparted to the plate material by performing deformation while applying tension to the plate material, the shape freezing property can be improved. As a result, a process required for imparting shape freezing property can be reduced, and molding accuracy can be improved.

  Either one of the inner roll and the outer roll includes an annular convex portion (for example, an annular convex portion 111a described later) formed on the outer peripheral surface over the entire circumference, and the other roll has an outer peripheral surface. It is preferable that an annular groove portion (for example, an annular groove portion 112a described later) is provided over the entire circumference and the annular convex portion is accommodated via the plate material.

In this invention, the annular convex part over the perimeter is formed in the outer peripheral surface of any one roll among an inner side roll and an outer side roll. Moreover, the annular groove part in which an annular convex part is accommodated via a board | plate material is formed in the outer peripheral surface of the other roll over the perimeter.
According to the present invention, since the plate material is pressed by the annular convex portion formed on the outer peripheral surface of one of the inner roll and the outer roll, deformation can be performed while further applying tension to the plate material. It is possible to further control the flow of the material around the region where the diameter cross-sectional shape changes to the small-diameter cross-sectional shape. Therefore, according to this invention, the generation | occurrence | production of the wrinkles resulting from the surplus in the circumference | surroundings of the site | part which changes to cross-sectional shape can further be suppressed, and a high quality irregular cross-section long member can be manufactured. Moreover, shape freezing property can be improved more, a process can be reduced, and a shaping | molding precision can be improved.

  Further, by using a manufacturing apparatus for a long section of a modified cross section provided with a plurality of roll pairs arranged in the conveying direction of the plate material, the cross section of the deformed cross section is formed by sequentially passing the plate material between the rolls of the plurality of roll pairs. A long member having a cross section, wherein at least one of the plurality of roll pairs includes an inner roll contacting an inner surface of the plate member and an outer surface of the plate member. An outer roll that abuts, sandwiching the plate material between the inner roll and the outer roll, and conveying the plate material while causing resistance to the flow of the material constituting the plate material, Provided is a method for producing a long-shaped member having an irregular cross-sectional shape.

  According to this method for producing a long section member having the modified cross section, the same effects as described above can be obtained.

  ADVANTAGE OF THE INVENTION According to this invention, generation | occurrence | production of the wrinkles resulting from a material surplus can be suppressed, and the manufacturing apparatus and manufacturing method of the irregular cross-section long member which can manufacture a high quality irregular cross-section long member can be provided.

It is the whole perspective view of the manufacturing apparatus of the odd section long member concerning one embodiment of the present invention. It is an expansion perspective view of the roll mechanism of the manufacturing apparatus of the irregular cross-section long member which concerns on the said embodiment. It is a figure which shows operation | movement of the roll mechanism of the manufacturing apparatus of the odd-shaped cross-section long member which concerns on the said embodiment, (a) is a figure which shows the state before sliding an outer side roll, (b) is an outer side roll diagonally. It is a figure which shows a state when it is made to slide below. It is a perspective view of the irregular cross-section long member manufactured with the manufacturing apparatus of the irregular cross-section long member which concerns on the said embodiment. It is a perspective view which shows the structure of the conventional roll forming apparatus. It is a figure which shows the mode of the change of the cross-sectional shape of a board | plate material. It is a perspective view of the irregular cross-section elongate member manufactured with the conventional roll forming apparatus.

Embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view showing a configuration of an apparatus 1 for manufacturing a long-shaped member P having a modified cross section according to an embodiment of the present invention. An apparatus 1 for producing a long section member P having a modified cross section according to the present embodiment is a roll forming apparatus that manufactures a long section member P having a tubular section having a flange by forming a sheet material W such as a steel sheet while being conveyed. is there.

  The manufacturing apparatus 1 of the odd-shaped cross-section long member P which concerns on this embodiment differs from the conventional roll forming apparatus 5 mentioned above in this one of the multiple roll pairs 50 arrange | positioned in the conveyance direction of the board | plate material W. This corresponds to the roll mechanism 10 unique to the embodiment. Therefore, the configuration other than the roll mechanism 10 is the same as that of the conventional roll forming apparatus 5 described above.

  As illustrated in FIG. 1, the manufacturing apparatus 1 for the long member P having a modified cross-section according to the present embodiment includes an uncoiler 20, a plurality of roll pairs 30, and a roll mechanism 10. Here, in FIG. 1, only two roll pairs 30 are shown for convenience, but more roll pairs 30 are provided before and after the roll mechanism 10.

  The uncoiler 20 is a supply device that supplies a plate material W to a plurality of roll pairs 30 and a roll mechanism 10 described later. The uncoiler 20 includes a mandrel 21 inserted in a central portion of a plate material W such as a steel plate wound in a coil shape, a drive source (not shown) that drives and rotates the mandrel 21 in the conveying direction of the plate material W, and distortions such as curl. And a leveler not shown. By this uncoiler 20, the board | plate material W is conveyed and supplied by a desired conveyance speed as a flat plate-shaped elongate member.

  A plurality of roll pairs 30 are arranged in the conveying direction of the plate material W. The plurality of roll pairs 30 are configured such that the shape of the outer peripheral surface of each roll constituting the forming surface and the inclination angle of the outer peripheral surface gradually change toward the downstream in the conveying direction of the plate material W. The plate material W is gradually formed into a tubular shape by being conveyed between the rolls of the roll pair 30.

The roll mechanism 10 has a configuration unique to the manufacturing apparatus 1 for the long member P having a modified cross section according to the present embodiment, and will be described in detail with reference to FIG.
FIG. 2 is an enlarged perspective view of the roll mechanism 10 of the manufacturing apparatus 1 for the long cross section member P according to the present embodiment. As shown in FIG. 2, the roll mechanism 10 includes a pair of roll pairs 110 and 110, a lower roll 120, and a pair of slide mechanisms 130 and 130.

  The pair of roll pairs 110 and 110 are disposed on both sides of the long plate material W. The roll pair 110 includes an inner roll 111 that contacts the inner surface of the plate material W and an outer roll 112 that contacts the outer surface of the plate material W.

  The inner roll 111 is a substantially cylindrical roll. The inner roll 111 is rotatable about a rotation axis X1 along the inclination direction of the tapered portion 112c of the outer roll 112 described later. That is, the inner roll 111 is rotatably arranged such that the outer peripheral surface thereof is along the outer peripheral surface of the tapered portion 112 c of the outer roll 112.

A predetermined gap is formed between the outer peripheral surface of the inner roll 111 and the outer peripheral surface of the tapered portion 112c of the outer roll 112, and the plate material W is formed by supplying the plate material W to this gap. . That is, the outer peripheral surface of the inner roll 111 forms a molding surface together with the outer peripheral surface of a tapered portion 112c of the outer roll 112 described later. The flange portion is formed by these forming surfaces.
As described above, in the present embodiment, the sheet material W is sandwiched between the inner roll 111 and the tapered portion 112c of the outer roll 112, thereby imparting resistance to the flow of the material and suppressing the generation of wrinkles.

The inner roll 111 is supported by a support member (not shown), and the position of the rotation axis X1 is fixed. That is, the inner roll 111 rotates at a position fixed in advance, and the rotation direction is opposite to the outer roll 112 described later.
The length of the outer peripheral surface of the inner roll 111 in the direction of the rotation axis X1 is substantially the same as the length of the outer peripheral surface of the outer roll 112, which will be described later, in the inclined direction of the outer peripheral surface.

On the outer peripheral surface of the inner roll 111, an annular convex portion 111a is formed over the entire circumference. The annular convex portion 111a has an annular shape, and its outer peripheral surface is formed along the rotation axis X1, that is, along the outer peripheral surface of the tapered portion 112c of the outer roll 112.
The annular convex portion 111a is formed at a position corresponding to the annular groove portion 112a formed on the outer peripheral surface of the tapered portion 112c of the outer roll 112 described later. Thereby, the annular convex part 111a is accommodated in the annular groove part 112a via the plate material W, and in this state, each roll rotates to perform molding.

  The outer roll 112 includes a substantially cylindrical column part 112b provided on the lower side, and a substantially tapered part 112c provided continuously on the upper side from the column part 112b. The outer roll 112 is rotatable about a rotation axis X2 in a substantially vertical direction.

  The cylindrical portion 112b is configured by a curved surface whose outer peripheral surface is convex inward. The outer peripheral surface of the cylindrical portion 112b is in contact with the plate material W to form a molding surface. Therefore, when the outer peripheral surface of the cylindrical portion 112b is a curved surface convex inward, the portion of the plate W that abuts on the cylindrical portion 112b is formed into a convex curved shape outward.

  The taper part 112c is reduced in diameter as it goes upward, and its outer peripheral surface is formed of an inclined surface. As described above, the outer peripheral surface of the tapered portion 112 c of the outer roll 112 constitutes a molding surface together with the outer peripheral surface of the inner roll 111 described above. Further, the rotation direction of the outer roll 112 is opposite to that of the inner roll 111 described above.

  On the outer peripheral surface of the tapered portion 112c of the outer roll 112, an annular groove portion 112a is formed over the entire circumference. The depth of the annular groove 112a is substantially the same as the protruding height of the annular protrusion 111a. Further, the width of the annular groove 112a (the length of the outer peripheral surface of the tapered portion 112c in the inclination direction) is set sufficiently longer than the length of the annular convex portion 111a in the direction of the rotation axis X1. Thereby, the annular groove 112a can accommodate the annular protrusion 111a via the plate material W, and the annular protrusion 111a can be moved in the direction of the rotation axis X1 in the annular groove 112a by a slide mechanism described later. ing.

  The slide mechanism 130 is coupled to the slide rail 131 extending obliquely upward along the rotation axis X1 described above, the slide guide 132 engaged with the slide rail 131, and the slide guide 132, and can rotate the outer roll 112. The upper and lower first support parts 133 and the second support parts 134 supported by the motor, a motor (not shown), a feed screw mechanism (not shown) connected to the motor shaft and screwed into the slide guide 132, and a motor (not shown) are controlled. And a control device.

Along with the first support part 133 and the second support part 134 coupled to the slide guide 132 and the slide guide 132 through the feed screw mechanism, the slide mechanism 130 having the above-described configuration drives the motor by the control device. The outer roll 112 can be slid in the direction of the rotation axis X1 of the inner roll 111.
More specifically, the odd-shaped cross-section long member P whose cross-sectional shape changes in the longitudinal direction is formed by sliding the outer roll 112 by the slide mechanism 130 during the conveyance of the plate material W, that is, during the forming process. Specifically, during the molding process, the outer roll 112 is slid obliquely downward along the direction of the rotation axis X1 to change from a large diameter portion having a large diameter sectional shape to a small diameter portion having a small diameter sectional shape. Then, the long section member P having an irregular cross section that gradually changes is formed.

  The lower roll 120 is a substantially cylindrical roll. The lower roll 120 is rotatable about a rotation axis X3 in a substantially horizontal direction. The lower roll 120 is configured by a curved surface whose outer peripheral surface is convex inward. The outer peripheral surface of the lower roll 120 is in contact with the plate material W to form a molding surface. Therefore, since the outer peripheral surface of the lower roll 120 is an inwardly curved surface, a portion that contacts the lower roll 120 of the plate member W is formed into a convexly curved shape on the outer side.

Operation | movement of the roll mechanism 10 of the manufacturing apparatus 1 of the odd-shaped cross-section long member P which concerns on this embodiment is demonstrated with reference to FIG. 3 and FIG.
FIG. 3 is a diagram illustrating the operation of the roll mechanism 10 of the manufacturing apparatus 1 for the long cross section member P according to the present embodiment. Specifically, FIG. 3 is a partial cross-sectional view when the roll mechanism 10 is viewed from the upstream side in the conveyance direction of the plate material W, and (a) is a diagram illustrating a state before the outer roll 112 is slid. (B) is a figure which shows a state when the outer side roll 112 is made to slide diagonally downward.
Moreover, FIG. 4 is a perspective view of the irregular cross-section long member P manufactured by the manufacturing apparatus 1 of the irregular cross-section long member P according to the present embodiment.

As shown in FIG. 3A, in the state before the outer roll 112 is slid obliquely downward by the slide mechanism 130, the large-diameter portion P1 of the odd-shaped long cross section member P shown in FIG. 4 is formed. At this time, the flange portion F in the large diameter portion P <b> 1 is sandwiched between the tapered portion 112 c of the inner roll 111 and the outer roll 112 and is pressed by the annular convex portion 111 a formed on the outer peripheral surface of the inner roll 111. Thereby, tension | tensile_strength is provided to the flange part F, a bead is formed, and generation | occurrence | production of a wrinkle is suppressed by the flow of a material being suppressed.
At this time, the annular convex portion 111a formed on the outer peripheral surface of the inner roll 111 is in contact with the lower end portion of the annular groove portion 112a formed on the outer peripheral surface of the tapered portion 112c of the outer roll 112. .

  On the other hand, as shown by the arrow in FIG. 3B, when the slide mechanism 130 is driven and the outer roll 112 is slid obliquely downward, the diameter of the elongated cross-section long member P gradually increases accordingly. The diameter is reduced, and a reduced diameter portion P3 of the long section member P having a modified cross section shown in FIG. 4 is formed. At this time, since the outer roll 112 slides, a greater tension is applied to the flange portion F in the reduced diameter portion P3, so that the material flow is further suppressed and the generation of wrinkles is further suppressed.

Further, as shown in FIG. 3B, when the outer roll 112 is slid, the annular protrusion 111a moves from the lower end to the upper end in the annular groove 112a, and the upper end Abuts against the part. As a result, the sliding movement of the outer roll 112 is restricted, whereby the small-diameter portion P2 having a predetermined small-diameter cross-sectional shape shown in FIG. 4 is formed (see the broken line in FIG. 3B).
In addition, since the tension | tensile_strength similar to the flange part F in the large diameter part P1 is provided to the flange part F in the small diameter part P2, generation | occurrence | production of a wrinkle is suppressed by the flow of a material being suppressed.

According to this embodiment, the following effects are produced.
In the present embodiment, a plurality of roll pairs 30 are arranged in the conveying direction of the plate material W, and at least one roll pair of the plurality of roll pairs 30 is contacted with the inner surface of the plate material W; And an outer roll 112 in contact with the outer surface. Further, the plate member W is sandwiched between the inner roll 111 and the outer roll 112, and the plate member W is conveyed while causing resistance to the flow of the material constituting the plate member W, whereby the odd-shaped cross-section long member P is formed. Manufactured.
According to this embodiment, the plate material W is sandwiched between the inner roll 111 and the outer roll 112, and the plate material W is deformed while causing resistance to the flow of the material constituting the plate material W. It is possible to control the flow of the material around the region where the cross-sectional shape changes from the cross-sectional shape to the small-diameter cross-sectional shape. Therefore, according to this embodiment, generation | occurrence | production of the wrinkles resulting from the surplus in the site | part periphery (flange part F) which changes to a cross-sectional shape can be suppressed, and the high quality irregular cross-section long member P can be manufactured.

In the present embodiment, the position of the rotation axis X1 of the inner roll 111 is fixed, while the outer roll 112 is movable in the direction of the rotation axis X1 of the inner roll 111.
According to the present embodiment, the outer roll 112 can be moved in the direction of the rotation axis X <b> 1 of the inner roll 111 while the plate material W is sandwiched between the inner roll 111 and the outer roll 112. Thereby, since deformation can be performed while applying tension to the plate material W, for example, it is possible to further control the flow of the material around the region where the cross-sectional shape of the large diameter changes to the cross-sectional shape of the small diameter. Therefore, according to this embodiment, generation | occurrence | production of the wrinkles resulting from the excess in the periphery of the site | part which changes to a cross-sectional shape can be suppressed more, and the high quality irregular cross-section long member P can be manufactured.
In addition, since deformation can be applied to the plate material W by applying deformation to the plate material W, the shape freezing property can be improved. As a result, a process required for imparting shape freezing property can be reduced, and molding accuracy can be improved.

Moreover, in this embodiment, the annular convex part 111a over the perimeter was formed in the outer peripheral surface of the inner side roll 111. As shown in FIG. Further, an annular groove portion 112 a in which the annular convex portion 111 a is accommodated via the plate material W is formed on the outer peripheral surface of the outer roll 112 over the entire circumference.
According to the present embodiment, by pressing the plate material W by the annular convex portion 111a formed on the outer peripheral surface of the inner roll 111, deformation can be performed while further applying tension to the plate material W. It is possible to further control the flow of the material around the site where the cross-sectional shape has a small diameter. Therefore, according to this embodiment, generation | occurrence | production of the wrinkle resulting from the excess in the periphery of the site | part which changes to a cross-sectional shape can further be suppressed, and the high quality irregular cross-section elongate member P can be manufactured. Moreover, shape freezing property can be improved more, a process can be reduced, and a shaping | molding precision can be improved.

  Moreover, according to the manufacturing method using the manufacturing apparatus 1 of the irregular cross-section long member P which concerns on this embodiment, there exists an effect similar to the above-mentioned effect.

  The present invention is not limited to the above-described embodiment, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.

DESCRIPTION OF SYMBOLS 1 ... Manufacturing apparatus of irregular cross-section long member 10 ... Roll mechanism 30 ... Multiple roll pair 111 ... Inner roll 111a ... Annular convex part 112 ... Outer roll 112a ... Annular groove part W ... Plate material

Claims (4)

An odd-shaped cross-section long member comprising a plurality of roll pairs arranged in the conveying direction of the plate material, and manufacturing a long member having an irregular cross-sectional shape by sequentially passing the plate material between the rolls of the plurality of roll pairs Manufacturing equipment,
At least one of the plurality of roll pairs is
An inner roll contacting the inner surface of the plate,
An outer roll contacting the outer surface of the plate material,
A long member having an irregular cross-sectional shape by sandwiching the plate material between the inner roll and the outer roll and transporting the plate material while causing resistance to the flow of the material constituting the plate material. The manufacturing apparatus of the elongate cross-section long member characterized by manufacturing this. The inner roll has its rotational axis fixed,
The apparatus for producing a long member having a modified cross section according to claim 1, wherein the outer roll is movable in a direction of a rotation axis of the inner roll. Either one of the inner roll and the outer roll includes an annular protrusion formed on the outer peripheral surface over the entire circumference,
The other roll is provided with an annular groove portion that is formed on the outer peripheral surface over the entire circumference and in which the annular convex portion is accommodated via the plate material. Manufacturing equipment for members. By using a manufacturing apparatus for a long-shaped member having a plurality of pairs of rolls arranged in the conveying direction of the plate material, the plate material is sequentially passed between the rolls of the plurality of roll pairs, thereby having a cross-sectional shape having a modified shape. A method for producing an irregular cross-section long member for producing a long member,
At least one of the plurality of roll pairs is
An inner roll contacting the inner surface of the plate,
An outer roll contacting the outer surface of the plate material,
A long member having an irregular cross-sectional shape by sandwiching the plate material between the inner roll and the outer roll and transporting the plate material while causing resistance to the flow of the material constituting the plate material. The manufacturing method of the irregular cross-section long member characterized by manufacturing this.

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