JPH08215764A - Roll forming device - Google Patents

Abstract

PURPOSE: To prevent a bottom part or an oblique side from generating the strain in a time of producing the article of a roof material, etc., which is curved in the longitudinal direction. CONSTITUTION: This roll forming device provides the multi-stage roll parts 6 to 21 which form a long size flat, thin sheet 2 composed of a steel so that the sheet 2 is gradually formed in a front face shape having a high height and an almost V-shape or a corrugated shape, and this device provides an arch forming roll part 26 which forms the formed article in an arch shape by incurvating in the longitudinal direction. Further, rippling waves forming roll parts 1, 23 in order to respectively form the rippling waves like projecting and recessing parts at the proper positions of the oblique side and the bottom part of the arch like article to be formed are arranged.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a forming roll device used for forming a thin plate made of steel.

[0002]

2. Description of the Related Art Heretofore, there has been known a forming roll device for forming an elongated thin plate made of a steel material so that its front shape is substantially V-shaped or corrugated.

In order to form this long thin plate so that the front shape is substantially V-shaped or corrugated, a forming roll device is generally provided with a pair of upper and lower rolls arranged in multiple stages.
It is configured such that a thin plate is gradually formed from the roll on the upper side so that the height of the front shape becomes higher.

Recently, as a roofing material for a building, a material which is curved in the longitudinal direction to form a circular roof bulging upward is also known. When such a roof material that curves in the longitudinal direction is formed by the above-described forming roll device, there is a problem that the bottom portion or side portion (oblique side) of the roof material is distorted due to the curve. Therefore, in order to absorb the distortion that tends to occur due to bending, a small wavy uneven portion (hereinafter referred to as ripples) is formed in the longitudinal direction of the roof material in the process before the roof material is curvedly formed at the bottom or the hypotenuse of the roof material. It is also known to form. The time (timing) when ripples are formed in the longitudinal direction of the roofing material is usually set at the upper end of the forming roll device that is supplied with the thin plate in a flat state. Ripples are simultaneously formed in a continuous state at the position corresponding to the bottom or hypotenuse of a roofing material.

[0005]

However, in the above-mentioned conventional construction, the thin plate is the final product in a flat state in order to absorb the strain which is generated by molding the roof material curved in the longitudinal direction. Ripples are continuously formed at the same time at the bottom of the roof and at the position corresponding to the hypotenuse.However, since the degree of distortion is different between the bottom of the roof and the hypotenuse, either the bottom of the roof or the hypotenuse is formed. There is a problem that it is difficult to absorb the strain.

The present invention is intended to solve such problems, and an object of the present invention is to prevent distortion at the bottom or the hypotenuse when molding a product such as a roofing material that curves in the longitudinal direction. .

[0007]

SUMMARY OF THE INVENTION In order to solve this problem, the present invention is directed to a long flat thin plate made of steel material in which the height of the front shape is gradually increased and the front shape is almost V-shaped or corrugated. A forming roll device having a multi-stage roll part that is formed into a mold, and an arch forming roll part that is formed by curving a formed product in the longitudinal direction to form an arch shape. A ripple-forming roll portion for forming a ripple-shaped concavo-convex portion is separately provided at a position corresponding to the hypotenuse and a position corresponding to the bottom of the product.

[0008]

With this configuration, the distortion when formed in an arch shape is calculated at the position corresponding to the hypotenuse of various products such as roofing material and the position corresponding to the bottom of various products, and the ripples are separately calculated. An uneven product can be formed, and an arched product having no distortion in the bottom or the hypotenuse can be obtained.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 9, reference numeral 1 denotes a ripple forming roll portion located at an end portion on the upper side of a forming roll device, and an elongated flat thin plate 2 made of steel material is located above and below the ripple forming roll portion 1. The ripples 5 are fed between the pair of rolls 3 and 4, and the ripples 5 are continuously formed at the positions corresponding to the side portions (oblique sides) of the roof material. In this ripple forming roll unit 1, a pair of upper and lower rolls 3,
The outer peripheral surface of the groove 4 is formed with concavo-convex portions 3a and 4a that mesh with each other. The thin plate 2 on which the ripples 5 are continuously formed by the ripple forming roll portion 1 at a position corresponding to a side portion (oblique side) of the roofing material is a multi-stage plate arranged toward the lower side end portion of the forming roll device. The thin plate 2 is gradually passed through the pair of upper and lower rolls 6a, 6b to 21a, 21b of the rolls 6 to 21 so that the height of the front shape is gradually increased and the front shape is substantially V-shaped. At the lower side position of the final stage roll part 21 of the multi-stage roll parts 6 to 21, a ripple forming roll part 23 for forming a ripple 22 in a continuous state is provided at a position corresponding to the bottom of the roof material. ing. Also in the ripple forming roll portion 23, the pair of upper and lower rolls 24 and 25 are formed with concave and convex portions 24a and 25a which mesh with each other on the outer circumference. Further, at the lower side position of the ripple forming roll portion 23, an arch forming roll portion 26 for bending the roof material in the longitudinal direction to form an arch shape is formed.
Is provided. The arch forming roll portion 26 is provided with a pair of upper and lower rolls 27, 28 which sandwich the upper end portion of the roof material at a position lower than the height of the bottom portion of the roof material passing through the final stage roll portion 21 and the ripple forming roll portion 23. , The roof material is forcibly lowered by the pair of upper and lower rolls 27, 28 below the height of the ripple forming roll portion 23, and the roof material is passed between the pair of upper and lower rolls 27, 28 to thereby extend the roof material in the longitudinal direction. It can be bent into an arch shape.

By the way, the pair of upper and lower rolls 27, 28 in the arch forming roll portion 26 are the pair of upper and lower rolls 27, 28.
A drive means 29 is provided for vertically moving the frames 27b, 28b supporting the 28 rotary shafts 27a, 28a integrally. The drive means 29 includes a shaft 31 which is rotated by a motor 30 around a horizontal axis, and a worm 32 which is attached to both ends of the shaft 31.
And a worm gear 34 mounted on the lower end of a shaft 33 that meshes with each worm 32 and rotates around a vertical axis, and a male screw portion 33a formed near the upper end of the shaft 33 is provided on the lower roll 28. Is supported by a female screw member 35 provided on a frame 28b for supporting the frame, and an intermediate portion in the vertical direction of the shaft 33 is rotatably supported by a bearing member 37 mounted on the main body side fixed frame 36, and further the frames 27b, 28b are supported. Bolt between
38 and the nut 39 connect the rolls 27 and 28 so that the distance between them can be adjusted. Therefore, the female screw member 35 that is screwed into the male screw portion 33a formed in the vicinity of the upper end of the shaft 33 that rotates via the worm 32 and the worm gear 34 when the motor 30 is driven.
Lower frame 28b having this and this lower frame 28
The upper frame 27b, which is connected to b, moves up and down as a unit, whereby the level between the rolls 27 and 28 is adjusted,
It is adapted to the curvature of the arched roofing material to be formed.

Although not shown in the drawings, a pair of upper and lower rolls 3 and 4 of the ripple forming roll unit 1 located at the end on the upper hand side is driven, and a plurality of stages arranged toward the end on the lower hand side. A pair of upper and lower rolls 6a, 6b to 21 of the roll portions 6 to 21
For driving a and 21b, driving a pair of upper and lower rolls 24 and 25 of the ripple forming roll unit 23, and driving a pair of upper and lower rolls 27 and 28 in the arch forming roll unit 26, for example, gears are attached to the rotation shafts of all the rolls. It can be performed by providing an endless chain on a large number of these gears and driving the chain by one motor.

The forming roll device of the embodiment shown in the drawings can form the arch-shaped roofing material 40 having the cross-sectional shape as shown in FIGS. 6 and 7, but various cross-sections can be obtained by exchanging rolls having different shapes. A shaped arched roofing material can be formed.

In the forming roll device of the embodiment shown in the drawings, the ripples 5 and 22 are separately formed at the position corresponding to the hypotenuse of the roof material and the position corresponding to the bottom of the roof material. If necessary, ripples may be formed at a position corresponding to the upper end (shoulder) of the roof material.

Further, although the above embodiment describes the molding of the arch-shaped roofing material, it can be applied to the molding of products other than the roofing material.

[0015]

As described above, according to the present invention, the strains when formed in an arch shape are calculated at the position corresponding to the hypotenuse of various products such as roofing materials and the position corresponding to the bottom of various products. Thus, it is possible to separately form the ripple-shaped concavo-convex portion, and it is possible to obtain an arch-shaped product having no distortion in the bottom portion or the hypotenuse.

[Brief description of drawings]

FIG. 1 is a schematic side view of a forming roll device according to an embodiment of the present invention.

FIG. 2 is an enlarged view of an essential part of the hypotenuse ripple forming roll unit.

FIG. 3 is an enlarged view of an essential part of the bottom ripple forming roll section.

FIG. 4 is an enlarged view of an essential part of one roll portion for molding the same thin-walled plate so that its front shape is substantially V-shaped.

FIG. 5 is an enlarged view of a main part of the arch forming roll portion.

FIG. 6 is a perspective view of the arch-shaped roofing material.

FIG. 7 is an enlarged perspective view of a main part of the arch-shaped roofing material.

FIG. 8 is an enlarged sectional view of a hypotenuse of the arch-shaped roof material.

FIG. 9 is an enlarged sectional view of a bottom portion of the arch-shaped roofing material.

[Explanation of symbols]

 1 Ripple forming roll part 2 Thin plate 3,4 roll 3a, 4a Uneven part 5 Ripple 6-21 Roll part 6a, 6b-21a, 21b Roll 22 Ripple 23 Ripple forming roll part 24, 25 Roll 24a, 25a Uneven part 26 Arch Forming roll 27, 28 Roll 40 Arch roofing material

Claims (1)

[Claims] 1. A multi-stage roll portion for forming a long flat thin plate made of steel material so that the front shape is gradually increased in height and the front shape is substantially V-shaped or corrugated. A forming roll device provided with an arch forming roll portion for bending a formed product in a longitudinal direction to form an arch shape, each of which is provided at a position corresponding to a hypotenuse or a position corresponding to a bottom of an arch product to be formed. A forming roll device, characterized in that ripple forming rolls for separately forming ripples are formed.