JPH08117870A - Method and device for bending metallic panel with rib - Google Patents

Abstract

PURPOSE: To prevent the laid-falling of a rib and the crack of a sheet, etc., by restraining the side surface of the rib material incorporated into a straight groove arranged on the peripheral surface of a roll by rotating the roll, applying the roll surface pressure onto the top surface of the rib material and executing the bending. CONSTITUTION: A panel 1 fixedly extending the bend-like rib material 2a as almost vertical-state is inserted into between the center roll 1c and bending rolls A and B. The straight groove 4 for incorporating the bend-like rib material 2a is arranged on the peripheral surface of the center roll C, and the band-like rib material 2a is surrounded and the top part 3 is pressed and the side surfaces are restrained to execute the bending. By this method, the high rigidity band-like rib 2a is fixed in comparison with the panel 1 without developing the bending to the band-like rib material 2a and the buckling of the base part, to execute the forced bending. Since both surfaces of the panel 1 restrain the free deformation with the center roll C and the rolls A and B, the strain deformation is not developed and the laid-falling of the rib and the crack of the sheet, etc., can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for bending a metal panel with reinforcing ribs, and more particularly to bending a metal panel in which a strip-shaped rib material is fixedly extended almost integrally on a metal plate surface. The present invention relates to a roll forming method and apparatus which prevent deformation and damage of the rib material and the plate material.

[0002]

2. Description of the Related Art As a method of bending a metal plate or a profile, a so-called roll forming method is widely known, which is a method of continuously bending while pressing and passing between two or four rotating rolls. ("Handbook", Showa 50,
Japan Society for Plastic Processing, Maruzen, P239-281)

Several proposals have been made for the bending of ribbed panels by the roll forming method. However, a plate material in which concave groove ribs are formed in the plate material itself by roll forming, pressing or the like is formed by the roll forming method. The method of bending in the extending direction of the grooved ribs is disclosed in the proposal of JP-A-62-1.

However, bending of a panel in which a thick plate strip, an extruded strip, or the like having a remarkably higher rigidity than the plate is fixed as a reinforcing rib by welding or the like causes various difficulties due to the difference in rigidity. In particular, since the plate surface is undulated, the rib material falls sideways, is bent, or the fixed base is peeled off, the bending work in harmony with the plate and the rib has not been successful. Therefore, a method of bending the plate material and the rib material individually and then welding them may be adopted, or the welding material may be locally heated and subjected to hot bending by a craft former (universal sheet metal machine). (Aluminum alloy ship construction technical instruction book,
October 1980, Japan Small Ship Manufacturers Association, P102-1
07)

On the other hand, in relation to ships and vehicles, weight reduction,
As a means to save energy, the rigid structure in which the plate thickness is reduced and high-rigidity ribs are welded is becoming a trend. In response to this, in addition to the conventional welding T bar, extruded profile integrated with the plate base is rapidly used as a rib member. Is becoming popular. Further, in the latter case, as illustrated in Japanese Utility Model Laid-Open No. 2-33799, an extruded profile in which two or more rib members are extended in parallel has been positively adopted as an assembly structural member.

Under the circumstances described above, it is an important subject to develop a method and apparatus suitable for bending a metal panel in which a strip-shaped rib material is integrally and almost vertically extended on a metal plate surface. There is.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and does not cause undulating deformation on a metal plate surface at the time of bending a metal panel with a band-shaped rib material, and moreover, the band-shaped rib material. It is an object of the present invention to provide a method and an apparatus capable of smoothly and efficiently performing bending without lateral collapse, bending, peeling of a welding base or the like.

[0008]

In order to achieve the above object, the inventors of the present invention prevent the deformation of the rib and the metal plate when the metal panel with the strip-shaped rib material is clamped between the rotating rolls and bent. As a result of various tests and examinations regarding a method of suppressing, it has been found that a favorable result is stably obtained by performing bending while pressing the top of the band-shaped rib and suppressing the side surface of the band-shaped rib. Has reached.

That is, according to the present invention, as shown in FIG. 7 (l), a panel in which a strip-shaped rib material 2 is integrally extended substantially vertically on a metal plate surface 1 is inserted between rotating rolls to form the ribs. Bending the material in the direction of extension with the surface on which the material is extended inward.
When producing a bent panel as shown in FIG. 7 (e), the first invention is to store the rib material in a groove provided on the circumferential surface of the roll facing the rib material, and The top part of the rib material contacts the bottom surface of the groove or the filling material surface in the groove, and the side surface of the rib material is suppressed along with the rotation of the roll, and a roll surface pressure is applied to the rib material top part. It is a method of bending a panel with rib material, which is characterized in that bending is carried out while performing.

In a second aspect of the invention, an elastic body having a thickness corresponding to at least the height of the rib material is filled between the strip-shaped rib materials, and the side surface of the rib material is suppressed as the roll rotates. The method for bending a panel with rib material is characterized in that bending is performed while applying a roll surface pressure to the top of the rib material.

According to a third aspect of the present invention, a panel in which a strip-shaped rib material is integrally extended substantially vertically on a surface of a metal plate is inserted between rotating rolls, and the surface on which the rib material is extended is placed inside. And a device for bending in the extending direction, wherein the roll peripheral surface accommodates the strip-shaped rib material and is provided with a groove having a bottom surface or a filler surface that abuts on the top of the rib material. Is a device for bending a panel with a strip-shaped rib material.

A fourth aspect of the invention is characterized in that a spacer made of metal or a hard elastic body for adjusting the inner size of the groove is detachably attached to the bottom surface and / or side surface of the groove on the peripheral surface of the roll. It is a bending device for a panel with rib material.

Further, in a fifth aspect of the invention, an elastic layer having a thickness corresponding to at least the height of the rib material is left on the peripheral surface of the roll facing the rib material, leaving a position facing the strip-shaped rib material. A bending device for a panel with a strip-shaped rib material, characterized in that the body is fixed.

The symmetrical metal plate and strip rib material of the present invention are general-purpose alloy materials such as iron alloys and aluminum alloys, and their types are not specified. The band-shaped rib material may be a T-shaped butt weld of a band-shaped plate material as shown in 2a of FIG. 1 or a band-shaped rib made of an extruded profile 2 with a long section at the top as shown in FIGS. The fixing of the metal plate and the strip-shaped rib material is not limited to welding but may be riveting. There is also a case of an extruded profile panel in which a plurality of strip-shaped rib members with longes are vertically suspended.

In the first, third and fourth aspects of the invention, the groove on the circumferential surface of the roll has a shape and dimension in which the rib material is accommodated at the position where the strip rib material abuts, and at the same time the roll rib rotates. The rib member must be smoothly accommodated, and the rib must be smoothly separated from the groove from the processing end position. Furthermore, as an important requirement, in the bending region, the tops of the strip ribs are in contact with the bottom surface of the groove. As a result, during bending, the rib is sandwiched between the peripheral surface of the opposite roll and the bottom of the groove, and the top of the rib is bent while receiving a pressing force.

Therefore, the depth h1 of the groove and the height h of the strip rib are
2 is that h1 ≦ h2 is satisfied as shown in FIG. 1- (b). When both dimensions are equal, the roll surface also presses the base plate surface of the band-shaped rib, so that the deformation of the plate surface is suppressed. Is effective for. However, it is difficult to expect such a state from the viewpoint of dimensional change due to welding, dimensional accuracy of cut plate, and the like. Therefore, practically, h2-h1 = 0.3 to 3.0 mm. It is appropriate to set the degree.

On the other hand, the width w of the groove is determined by the balance between the lateral restraining force of the strip rib and the smoothness of the rib entering and leaving the groove. When the strip-shaped rib is sandwiched between the roll peripheral surface and the bottom of the groove as described above, the restraining force in the lateral direction is not a serious problem and may be determined in consideration of the rib insertion / removal property.

In the present invention, the depth h1 and the width w of the groove can be adjusted by mounting an appropriate spacer (filler) on the inner bottom and / or the side wall of the groove. The spacer may be metal, hard resin, hard rubber or the like, as well as a laminated paper body, and it is necessary to fill the spacer to a uniform thickness. Further, it is not essential that the spacers are continuously mounted in the circumferential direction in the groove, and as shown in FIG. 4, the spacers may be mounted discretely at appropriate intervals so that the ribs themselves do not bend.

When the spacer has elasticity such as hard resin or hard rubber, it may be self-held at the bottom of the groove without requiring special locking means, but in many cases, suitable locking means. is necessary. Figure 3-
As shown in (e) and (e), it is fixed to the bottom of the groove by a fixing means such as a countersunk screw on the circumferential surface of the roll. Mounting on the side wall,
As illustrated in FIG. 3- (f), means such as fixing one side of the bent plate material to the peripheral surface of the roll with countersunk screws or fixing with an adhesive is suitable.

In the second aspect of the invention, as illustrated in FIGS. 5 and 6, the elastic member 9 is densely filled in advance in the lateral space of the rib material 2 on the metal plate surface 1, and the rib material top portion 3 is formed. Bending is performed while applying a roll surface pressure to. The elastic body 9 is preferably made of a hard resin foam material or a hard rubber material, and is densely filled between the rib materials. The elastic body to be filled is
It exerts a restraining force on the lateral direction of the strip rib. Therefore, it is desirable that the top surface level of the elastic body when filling the elastic material is slightly higher than the height of the rib material, which increases the packing density of the elastic body under the inter-roll surface pressure during bending between rolls. , Lateral deterrent is a strong source.
This method has an advantage that no groove is required on the circumferential surface of the roll and no special equipment cost is required.

The fifth aspect of the present invention is one type of apparatus for carrying out the method of the second aspect of the present invention, in which a position facing the strip-shaped rib material is left on the peripheral surface of the roll facing the rib material. A bending apparatus for a panel with a strip-shaped rib material, characterized in that an elastic body having a thickness corresponding to at least the height of the rib material is fixed, wherein the elastic material is fixed on the roll peripheral surface, In other words, it constitutes an elastic roll provided with grooves.

Adhesion is generally suitable for fixing the elastic body on the peripheral surface of the rotating blade. That is, after the steel roll surface is washed with an organic liquid by a conventional method, various well-known structural adhesives (phenol-based, epoxy-based, etc.) are preferably applied in consideration of the combination with the material of the elastic body. As another fixing means, there is an optional means such as winding the elastic body around the belt or screwing the elastic body around the elastic body to the roll main body through a washer. According to this apparatus, the work of filling the elastic material in advance between the rib materials is not required, and the workability is improved. However, in the rib material with the longes, the filling degree of the elastic body on the side surface of the rib material is excellent in the method of the second invention, and the side surface support of the rib material becomes strong.

[0023]

[Operation] According to the present invention, a panel in which a strip-shaped rib material is integrally fixed and extended substantially vertically on a metal plate surface is inserted between rotating rolls and bent in the extending direction of the rib material. On the occasion of
It encloses the band-shaped rib material, presses the top of the band-shaped rib, and bends while suppressing the side surface of the band-shaped rib.This prevents bending of the band-shaped rib and crushing of the base, etc. Then, the band-shaped rib material with extremely high rigidity is fixed and preferentially forcedly bent. Therefore, the metal plate integrally fixed to the rib material by welding or the like deforms following the bending deformation of the rib material. Moreover, since both sides of the metal plate are located between the roll or between the roll and the elastic body surface on the roll peripheral surface and free deformation is suppressed, the plate is not deformed and deformed, and is held flat. A processed product is obtained.

The wrapping of the strip-shaped rib material described above is performed by forming a groove formed on the peripheral surface of the rotating roll or an elastic body having a thickness equal to or greater than the rib material between the strip-shaped rib materials on the peripheral surface of the rotating roll. Since the filling is done by filling, the suppression of the side surface of the strip-shaped rib material surely and stably acts.

Further, according to the present invention, the depth and / or the width of the groove is adjusted by filling the groove on the peripheral surface of the rotating roll with an appropriate spacer, so that the size of the strip rib material can be easily changed. It is adaptable and does not need to have a large number of rolls. Further, when filling the elastic material between the rib materials, it is possible to easily cope with the change of the rib material size by changing the thickness and / or the interval of the elastic material.

Embodiment 1

The present invention will be described in more detail with reference to the following examples. FIG. 1- (a) shows an embodiment of a bending method according to the present invention, in which a panel 1 formed by integrally fixing and extending strip-shaped rib members 2a substantially vertically extends a rotation center with its position fixed. The roll C and the center roll C are inserted between two rotary bending rolls A and B which are vertically and laterally accessible to each other, and are bent in the extending direction of the rib material. A vertical section is shown. A groove 4 for accommodating the rib material is provided on the peripheral surface of the center roll C facing the strip-shaped rib material 2a.

A longitudinal section taken along the line aa 'in FIG. 1- (a) shows a state in which the rib material is accommodated in the groove 4 as shown in FIG. 1- (b). Is an aluminum alloy plate material (JIS-5083 alloy, extruded material) with a height of h2 = 80 mm. , The thickness of the body portion 2a is t = 4 mm.
The rib material is applied to the aluminum alloy panel 1 (J
IS-5052 alloy, thickness t = 3 mm. ) Is welded to fillet and integrated. The depth of the groove 4 on the circumferential surface of the roll is h
1 = 79 mm. With the above configuration, the rotational peripheral speed of the roll is 100 mm. / Sec, the radius of curvature is 1,500 mm. The bending process of No. 2 could be performed smoothly, no bending deformation of the rib material was observed, and the panel at the bent portion was smooth and the finish was good.

FIG. 2 shows an embodiment relating to the application of a spacer for adjusting the depth of the groove on the circumferential surface of the roll. FIGS. 2 (c) and 2 (d) show an H-shaped steel channel 5a at the bottom (back) of the groove. The hard rubber belts 5b are respectively filled and fixed, and the groove depth and the rib material height are harmonized.

FIG. 3- (e) relates to a spacer for adjusting the width of the groove, and includes a vertical piece 6a which is in contact with one inner wall in the width direction of the groove 4 and an edge portion of the groove. Bend at a right angle,
An L-shaped steel channel formed of a horizontal piece 6b in contact with the roll peripheral surface, and an adjusting piece 7 having the same thickness as the horizontal piece 6b on the outer peripheral surface of the roll outside the other edge of the groove 4 are provided for each roll. It is configured to be fixed to the outer peripheral surface. The fixing to the outer peripheral surface of the roll may be carried out by screwing the roll with a flat head screw or the like as shown in the drawing, or by using a resin adhesive. Horizontal piece 6b
The width of the adjusting piece 7 in the horizontal direction may be in the peripheral area of the edge of the groove, and each piece may have a width of about two-thirds or more of the groove depth.

FIG. 3- (f) relates to a spacer capable of adjusting the width and depth of the groove at the same time.
A spacer having a Z-shaped cross section in which a ceiling piece 6c that fills the space between the top 3 of the rib material 2 and the bottom of the groove is integrally connected to the tip of the vertical piece 6a of the shaped steel channel. By changing the thickness of 6c, the width and depth of the groove can be adjusted at the same time without changing the dimensions of the groove provided on the roll. The method of fixing the spacer is the same as in the case of FIG.

It is not essential that the above spacers be continuously arranged on the peripheral surface of the roll. FIG. 4 shows the arrangement of the spacers of the above L-shaped steel channel. The spacers (horizontal pieces 6b in the figure) divided into eight on the peripheral surface of the rotating roll have a radius of curvature of 250 mm. 15 mm.
However, this eliminates the difficulty of using an annular spacer that surrounds the circumference of the rotating roll, and the spacer installation work has been significantly improved.Folding work is not hindered and its finish must be satisfied. It was a kimono.

Example 2

FIG. 5 shows an embodiment of the device of the fifth invention of the present application, in which the elastic body 9 is adhered and fixed by the adhesive 10 while leaving the position of the strip-shaped rib material 2 on the peripheral surface of the center roll C. . As the elastic body, various hard rubber bodies (commercial product examples: special hard rubber made by Irumagawa Rubber Co., Ltd.) were used, and the thickness thereof was set to 105% of the height of the strip ribs.

In carrying out this type of invention using an elastic body, elastic plate restraining plates 11 having the same height as the strip-shaped rib material are detachably attached to the roll by screws 12 at both ends in the axial direction of the roll. It is necessary to suppress the free deformation of the body in the direction outside the axis and to strengthen the support of the outer side surface of the rib material.

FIG. 5 shows an embodiment of the second invention of the present application, in which an elastic body 9 is pre-filled between the strip-shaped rib members 2 to suppress the side surface of the rib members as the roll rotates,
This is a method of performing bending while applying a roll surface pressure to the rib material top portion 3. Also in this case, mortgage restraining means for restraining the deformation of the elastic body is required at both ends in the axial direction of the roll, as in the above-mentioned device.

The bending process using the method and apparatus of the above-described embodiment does not cause lateral deformation of the strip-shaped ribs, cracks or undulations of the plate of the fixed base of the ribs, maintains a smooth surface, and has a product yield of 100. %Met. On the other hand, when the panel with the belt-like ribs is fed between the rolls to perform bending without using any means as in the past, the above-described processing defects occur and the product yield is only about 30%. There wasn't.

[0036]

According to the method and apparatus of the present invention, a panel formed by integrally extending strip-shaped rib material on a metal plate surface substantially vertically is inserted between rotating rolls, and the surface on which the rib material is extended is inserted. When it is bent in the direction of extension with the inside facing, it exhibits excellent bending workability, so that the band-shaped ribs do not fall sideways during processing and the plate of the rib fixing base does not crack or peel off. Further, there is an effect such that a undulating deformation does not occur on the surface of the metal plate and a smooth surface is maintained. Further, the present invention has an effect that it is possible to easily cope with the size change of the strip-shaped rib material by the inexpensive equipment. Collectively, the present invention is suitable for manufacturing ribbed structural members for ships, vehicles, etc., and provides good quality, high yield, and high productivity.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing a bending state of a panel with a long strip-less simple strip rib material, which is a main part of a roll bender with a groove according to the present invention.

FIG. 2 is a vertical cross-sectional view showing the filling of spacers at the bottom of the groove on the circumferential surface of the roll of the present invention.

FIG. 3 is a vertical cross-sectional view showing adjustment of the depth and width of the groove by fixing spacers on the groove bottom and side surfaces on the roll circumferential surface of the present invention.

FIG. 4 is a vertical cross-sectional view showing discrete fixing of spacers in the groove on the roll peripheral surface of the present invention.

FIG. 5 is a vertical cross-sectional view showing a main part of a roll bender of a roll according to the present invention, in which an elastic body is fixed on the peripheral surface.

FIG. 6 is a vertical cross-sectional view showing a main part of a panel roll roll bender according to the present invention in which an elastic body is filled between strip-shaped rib materials.

FIG. 7 is a perspective view of a panel with band-shaped rib material before (L) and after (B) bending according to the present invention.

[Explanation of symbols]

 1 Metal Panel 2, 2a Strip-shaped rib material 3 Top of strip-shaped rib material 4 Grooves on roll peripheral surface 5a, 5b Spacer 6a Vertical piece 6b Horizontal piece 6c Ceiling piece 9 Elastic body 11 Suppression plate C Center roll

Claims (5)

[Claims] 1. A panel in which a strip-shaped rib material is integrally extended substantially vertically on a metal plate surface is inserted between rotating rolls,
When bending the rib material in the extending direction with the extended surface inside, the rib material is accommodated in a groove provided on the circumferential surface of the roll facing the rib material, and The top of the rib material abuts the bottom surface of the groove or the spacer surface in the groove, suppresses the side surface of the rib material with the rotation of the roll, and applies roll surface pressure to the rib material top. A method for bending a metal panel with a rib material, which comprises bending while performing the bending process. 2. A panel in which a strip-shaped rib material is integrally extended substantially vertically on a metal plate surface is inserted between rotating rolls,
When bending the rib material in the extending direction with the surface on which the rib material is extended inward, an elastic body having a thickness corresponding to at least the height of the rib material is preliminarily filled between the strip-shaped rib materials, A method for bending a metal panel with a rib material, which comprises suppressing a side surface of the rib material as the roll rotates and performing bending while applying a roll surface pressure to the top of the rib material. 3. A panel formed by integrally extending strip-shaped rib members substantially vertically on a metal plate surface is inserted between rotary rolls,
A device that bends in the extending direction with the surface on which the rib material is extended facing inward, wherein the roll peripheral surface facing the rib material accommodates the rib material and at the top of the rib material. An apparatus for bending a metal panel with a strip-shaped rib material, characterized in that a groove having a bottom surface that abuts is formed. 4. A spacer made of a metal or a hard elastic body for adjusting the inner size of the groove is detachably attached to the bottom surface and / or the side surface of the groove on the peripheral surface of the roll. A bending device for a metal panel with a rib material as described above. 5. A panel in which a strip-shaped rib material is integrally extended substantially vertically on a metal plate surface is inserted between rotating rolls,
A device for bending in a direction in which the rib material is extended with the extended surface facing inward, wherein a position facing the strip-shaped rib material is left on the peripheral surface of the roll facing the rib material. A bending device for a metal panel with a strip-shaped rib material, characterized in that an elastic body having a thickness corresponding to at least the height of the rib material is fixed.