JP2003088921A - Manufacturing device of corrugated stock plate for round roof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To manufacture a corrugated stock suitable for a round roof by giving the longitudinal strain which is increased toward each stock plate end part from a center part in the width direction to the longitudinal direction of a metal strip. SOLUTION: Pinch roll stands 10 and 30 are provided on the inlet side and the outlet side of a bend roll stand 20 with a plurality of bend rolls of different diameter in the axial direction disposed in upper and lower stages and an upper roll set 21u and a lower roll set 21d disposed in a staggered manner thereon. A braking device 13 is connected to a lower roll 11d of the inlet side pinch roll stand 10, and a motor 33 is connected to a lower roll 31d of the outlet side pinch roll stand 30. Tension is applied by the braking device 13 to a metal strip S fed into the bend roll stand 20 from the inlet side pinch roll stand 10, and the metal sheet is bent and re-bent by the bend rolls 21u and 21d to give the different longitudinal strain in the width direction to the metal strip.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for producing a metal folding plate material having a shape curved along the longitudinal direction and suitable for constructing an arch roof or the like.

[0002]

2. Description of the Related Art In large buildings such as warehouses and gymnasiums, folded metal plates are often used as roofing materials. Since the metal folded plate has a higher cross-sectional rigidity than roof materials such as roof tiles, the beam pitch can be lengthened, and base materials such as ground boards can be omitted. In large-scale buildings, designs with arched roof shapes are often used. The arched roof is effective not only for improving the design but also for saving roofing materials and work man-hours because the building can be omitted. However, metal folded plates are difficult to bend due to their high cross-sectional rigidity, and in addition, they require special skills to bend at a work site with a small bending radius.
It has been considered unsuitable for arch roofs. In this regard, if a metal folding plate that can be applied to an arched roof is provided, it will be possible to reduce the materials required for the construction of the arched roof, shorten the construction period, and further reduce the construction cost and create an arched structure with a design. You can build a roof.

Therefore, the present inventors have introduced a method for producing a metal folded plate that can be used for an arch-shaped roof by applying longitudinal strains having different magnitudes in the width direction to the metal strip (special feature). Kaihei 10-48146 gazette). Further, as a means for imparting longitudinal strain with a target widthwise distribution, a method of bending and deforming a metal strip with a plurality of bending rolls having a predetermined profile was proposed (Japanese Patent Application No. 2000-29).
No. 0021).

[0004]

For example, a single fold type metal folded plate has a fitting joint JR,
JL (in the example of Fig. 1, the right side is a male fitting joint JR, the right side is a female fitting joint JL) is formed, and there are slopes SR and SL that gradually decrease toward the center in the width direction. The flat web W has the lowest center. In order to be able to apply a metal folded plate having such a cross-sectional shape to an arch-shaped roof, a folded plate with a longitudinal strain having a widthwise distribution that increases from the widthwise central portion toward both widthwise ends. Materials are needed. In addition, considering that a metal folded plate is used as a long material having a length of several tens of meters to several tens of meters, a folded plate material in which longitudinal strain is continuously applied over the length of the folded plate is required. It is said that

[0005]

The present invention has been devised in order to meet such a demand, and uses a bending roll stand incorporating a bending roll whose radius changes along the axial direction, and It is an object of the present invention to manufacture a folded plate material suitable for an arch-shaped roof by imparting a longitudinal strain that increases from the center part in the width direction toward the plate end part to the metal strip to which is added.

In order to achieve the object, the manufacturing apparatus of the present invention is a bending roll stand in which a plurality of bending rolls having different diameters in the axial direction are arranged in upper and lower two stages and the upper roll set and the lower roll set are arranged in a staggered manner. Pinch roll stands are installed on the input side and the output side, the braking device is connected to the pinch roll stand, and the motor is connected to the pinch roll stand on the output side pinch roll stand. It is characterized in that different tensions in the width direction are applied to the metal strip by applying tension to the metal strip sent to the stand with a braking device and bending / bending back with a bending roll. As the pinch roll of the pinch roll stand, a roll provided with a rubber lining having an anti-slip action is preferable.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION A manufacturing apparatus according to the present invention includes a metal strip S
Along the conveying direction D of the input side pinch roll stand 10,
A bending roll stand 20 and a delivery side pinch roll stand 30 are arranged (FIG. 2). The entry-side pinch roll stand 10 includes a pair of upper and lower pinch rolls 11u and 11d, and one roll (upper roll 11u in FIG. 2).
Can be moved up and down by operating the handle 12.
When the rolls lined with urethane rubber or the like are used for the pinch rolls 11u and 11d, it is possible to prevent the metal strip S from slipping or being scratched during bending. In the entrance side pinch roll stand 10, the braking device 13 connected to the lower roll 11d.
As a result, tension is applied to the metal strip S sandwiched between the pinch rolls 11u and 11d. The braking device 13 may be connected to the upper roll 11u, and the lower roll 11d can be moved up and down, or both the pinch rolls 11u and 11d can be moved up and down.

The bending roll stand 20 has a plurality of bending rolls 21u and 21d arranged in a zigzag pattern so that the horizontal axis distance and the vertical axis distance are constant.
The bending rolls 21u and 21d are assembled to the upper chock 22u and the lower chock 22d for each of the upper roll set 21u and the lower roll set 21d. In FIG. 2, the upper roll set 2
Although four rolls are used for 1u and three rolls are used for the lower roll set 21d, the number of rolls is appropriately changed in consideration of the material of the metal strip S and the magnitude of longitudinal strain.

The upper chock 22u is fixedly arranged at a predetermined height position. The lower chock 22d is the upper roll set 2
The height adjustment mechanism such as the screw jack 23 controls the movement in the vertical direction so that the vertical axis distance of the lower roll set 21d with respect to 1u can be changed. The upper roll set 21u may be provided with a quick open mechanism such as an air cylinder 24 in order to facilitate work such as removal of the metal strip S from the bending rolls 21u and 21d. Since the lower chock 22d is fixedly arranged and the upper chock 22u can be moved up and down, the upper roll set 2d can be moved with respect to the lower roll set 21d.
It is also possible for 1u to approach or separate. In this case, it is preferable to lay a quick open mechanism on the lower chock 22d fixedly arranged.

As the bending rolls 21u and 21d, for example, drum-shaped rolls having the roll profile shown in FIG. 3 are used. That is, the center in the axial direction is a small diameter area C (diameter is constant at Dc), both sides are large diameter area E (diameter is constant at De), and the diameter is from Dc to De toward the large diameter area E from the small diameter area C. Is a diameter increasing region M in which the diameter increases smoothly. Small area C, large area E,
The length of the diameter increasing region M in the axial direction and the sizes of the diameters Dc and De are appropriately determined according to the plate width of the metal strip S and the applied longitudinal strain. In FIG. 3, the roll profiles of the bending rolls 21u and 21d suitable for the production of the material for a single mountain folding plate are shown.
A roll having a profile in which the diameter changes intricately in the axial direction so that the longitudinal strain changes in accordance with the above is used.

The output side pinch roll stand 30 is also provided with a pair of upper and lower pinch rolls 31u and 31d similarly to the input side pinch roll stand 10, and one roll (the upper roll 31u in FIG. 2) is a lifting mechanism such as the handle 32. It can be moved up and down by operating. Pinch rolls 31u, 31
Also as d, a roll lined with urethane rubber or the like can be used. The delivery side pinch roll stand 30 conveys the metal strip S in the conveyance direction D by the power from the motor 33 connected to the lower roll 31d. The handle 32 and the motor 33 may be replaced with the lower roll 31d or the upper roll 31u.

The metal strip S to be bent is sent from the entry side pinch roll stand 10 to the bending roll stand 20. The gap between the pinch rolls 11u and 11d, the gap between the bending rolls 21u and 21d, and the pinch rolls 31u and 3d
After passing the metal strip S through the gap of 1d, the lower roll 11d,
The upper rolls 11u and 31u are pressed against 31d and the metal strip S
Non-slip. In addition, the upper roll, 31u is the lower roll 1
If a pressurizing mechanism such as an air cylinder (not shown) for pressing down the 1d and 31d is incorporated, the upper rolls 31u and 31u can be pressed against the lower rolls 11d and 31d with a constant pressing force. Next, the screw jack 23 is driven to adjust the height of the lower chock 22d, and the upper roll set 21u and the lower roll set 21d are bent so that the metal strip S is bent and deformed.
Set the vertical distance between and. The path line between the bending rolls 21u and 21d after the height adjustment may be set so that the metal strip S is conveyed from the entrance side pinch roll stand 10 to the exit side pinch roll stand 30 at a substantially constant height. preferable.

A braking device 1 connected to the lower roll 11d
3 and the motor 33 connected to the lower roll 31d drive the metal strip S to which the tension is applied.
It moves in the transport direction D between u and 21d. Since each of the bending rolls 21u and 21d has a diameter that changes in the axial direction, even if the vertical axis distance between the upper roll set 21u and the lower roll set 21d is set to the same value, the large diameter range E is reached. The metal strip S is largely bent / bent back and deformed on both sides in the width direction, and the bend / bend back deformation of the metal strip S is small at the center in the width direction corresponding to the small diameter region C. That is, the degree of bending / bending back deformation differs in the width direction of the metal strip S, and the metal strip S that has passed through the bending roll stand 20 is given a longitudinal strain that increases from the center in the width direction to both ends. (Fig. 4).

Since the longitudinal strain on both sides in the width direction is made larger than that in the center in the width direction, the manufactured folded plate material is made of the web W.
It is easily radiused with the inside as a bent side, and is formed into a folded metal plate suitable for arched roofs. For a dome-shaped roof with an overall arch shape, it is preferable to use a folded plate material with different longitudinal strains in the width direction, but for roofs where the roof side such as the eaves is rounded, a metal strip is used. Board S
It is also possible to give different longitudinal strains in the longitudinal direction to a part of the longitudinal direction. The folded plate material having a longitudinal strain applied to a part of the longitudinal direction is formed by bending the metal strip S sent to the bending roll stand 20 into a predetermined longitudinal portion of the bending roll 21.
After being bent / unbent and deformed with u and 21d, lower roll assembly 2
It is manufactured by lowering 1d to release the metal strip S. Since any folded plate material is manufactured by continuously applying longitudinal strain to the metal strip S, it does not require a troublesome man-hour like press molding.

[0015]

As described above, in the manufacturing apparatus of the present invention, the metal strip is fed between the bending rolls having different diameters in the axial direction to be bent / bent back to be deformed, whereby a predetermined width direction is obtained. A longitudinal strain of distribution is applied to the metal strip. Since the metal strip is bent and unbently deformed under tension, it is subject to longitudinal strain according to the roll profile of the bending roll, and the web is bent even after it is formed into a metal folding plate of a predetermined shape. Can be radiused as the inside. In this way, a metal folded plate with the required radius for the arch-shaped roof is obtained, and the design of the building is improved.
Moreover, since the longitudinal strain is imparted by roll molding, which has higher productivity than press molding, a metal folded plate having a required shape can be provided with high productivity and at low cost.

[Brief description of drawings]

[Fig. 1] Cross-sectional shape of a single mountain folding plate

FIG. 2 is a schematic view of an essential part of an apparatus for applying a longitudinal strain to a metal strip plate.

FIG. 3 Profile of bending roll incorporated in bending roll stand

FIG. 4 is an explanatory diagram of longitudinal strain applied to the mountain fold plate.

[Explanation of Codes] 10: Input-side Pinch Roll Stand 30: Output-side Pinch Roll Stand 11u, 11d, 31u, 31d:
Pinch roll 12, 32: Handle 13: Braking device 33: Motor 20: Bending roll stand 21u, 21d: Bending roll 22u, 22d: Roll chock 23: Screw jack 24: Air cylinder C: Small diameter region of bending roll 21u, 21d E: Large diameter area M: Diameter increasing area S: Metal strip D: Transport direction

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hiroshi Asada             1 Tsurumachi, Amagasaki City, Hyogo Nisshin Steel Co., Ltd.             Company Technology Research Center F-term (reference) 2E108 AA05 BN06 CC01                 4E063 AA01 BB05 BB08 CA07 EA04                       MA12

Claims (2)

[Claims] 1. A pinch roll stand is provided on the entrance side and the exit side of a bending roll stand in which a plurality of bending rolls having different diameters in the axial direction are arranged in upper and lower two stages, and an upper roll set and a lower roll set are arranged in a zigzag manner. , The braking device is connected to the pinch roll of the input side pinch roll stand, the motor is connected to the pinch roll of the output side pinch roll stand, and the braking device is applied to the metal strip fed from the input side pinch roll stand to the bending roll stand. An apparatus for manufacturing a folded plate material for a roof with a rounded shape, which applies different tensions to the metal strip in the width direction by applying tension and bending / bending back with a bending roll. 2. The manufacturing apparatus for a folded plate material for a rounded roof according to claim 1, wherein a roll having a rubber lining having an anti-slip action is used as a pinch roll.