JPH0670910U - Guide for forming spiral cylinder - Google Patents

Abstract

(57) [Abstract] [Structure] A thin thin metal sheet made of metal with a narrow width is passed between the upper and lower corrugation forming rollers to form a corrugated shape.
In this spiral cylindrical body forming device that spirally wraps a thin long metal sheet with a wave shape and crimps each end to form a cylindrical duct, a narrow metal plate is curved in an arc shape. And a spiral cylindrical body forming guide formed by twisting by a width substantially matching the width of the corrugated thin elongated metal sheet 4. [Effect] By preparing an annular guide tool that is twisted by the width of a thin long metal sheet with a corrugated shape of several different diameters, it is possible to form a spiral cylindrical body of each diameter by a corrugated plate. it can.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention manufactures a corrugated sheet by forming a corrugated sheet on a narrow sheet made of metal such as aluminum or stainless steel rolled into a roll, and winding the corrugated sheet in a spiral shape to form an end portion. The present invention relates to a spiral-cylindrical-body-forming guide tool that is used when swaging to obtain a duct or the like and that is a guide tool having an extremely simple structure and that reliably forms a cylinder body.

[0002]

[Prior art]

 Conventionally, when a thin metal sheet is spirally wound to obtain a tubular body, a guide tool is generally known in which a plurality of rod-shaped guide tools having a certain length are used to guide the tubular body. ing.

[0003]

[Problems to be solved by the device]

 However, in the above-mentioned conventional technique, it is very troublesome to adjust the positions of the plurality of rod-shaped guides when manufacturing cylindrical bodies having different diameters, and it is easy to make an error and easily cause a trouble. This is because a large number of mounting hole taps are formed on the mounting plate of the rod-shaped guide in order to match several kinds of duct diameters, and the replacement work is troublesome and easy to make mistakes. In addition, the length of the rod-shaped guide must be gradually increased from the inlet to the outlet of the metal sheet according to the twist of the spiral, and therefore the length of the collar attached to the inside of the rod-shaped guide must be changed. Many of these are also available in accordance with the width of the metal sheet and the diameter of the duct, and it is easy to make a mistake. Therefore, there was a problem that a duct with a desired diameter could not be formed, or even if the duct was surrounded by a rod-shaped guide, the colds did not mesh with each other, causing a problem. In view of such circumstances, the present invention solves the above-mentioned drawbacks of the prior art, and with a simple structure, forms a narrow metal sheet into a corrugated plate to form a corrugated plate, and the corrugated plate is spirally wound. However, it can be used stably in forming a cylindrical duct or the like. This is a spiral cylindrical body forming guide formed by bending a narrow metal plate in an arc shape and twisting by a width that approximately matches the width of the corrugated thin elongated metal sheet. It is intended to provide

[0004]

[Means for Solving the Problems]

 The present invention is intended to solve the above-described problems, and a thin thin metal sheet made of metal is passed between upper and lower corrugation forming rollers to form a corrugation, and the corrugation is added. In a spiral cylinder body forming guide in a spiral cylinder body forming device in which a thin long metal sheet is spirally wound and each end is crimped to form a cylindrical duct, a narrow metal plate is formed. A technical means is adopted in which the thin metal sheet is curved in an arc shape and is twisted by a width substantially conforming to the width of the corrugated thin long metal sheet.

[0005]

[Action]

 According to the present invention, by adopting the above technical means, the spiral cylindrical body forming guide tool can be easily and definitely set when manufacturing ducts having different diameters with a simple structure.

[0006]

【Example】

 Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. The apparatus shown in FIG. 1 is suitable for forming a corrugated shape on a thin metal sheet 1 having a narrow width, and winding the spiral shape into a spiral shape to form a cylindrical body (for example, a duct). FIG. This is a thin metal sheet 1 made of a metal plate such as aluminum or stainless steel that has a narrow width and is fed between the upper and lower corrugation forming roller rows in the horizontal direction to form a corrugated shape. This is a device for obtaining plates (hereinafter referred to as corrugated plates). This corrugated plate is wound in a spiral shape through a guide to form a cylindrical body (for example, a duct), and when the ends in the width direction overlap each other, the ends are crimped almost at the same time. It is an apparatus for forming a spiral cylinder using a corrugated plate. This will be further described in detail with reference to FIG. 1. A thin metal sheet 1 made of metal such as aluminum having a narrow width is wound to form a coil and is drawn out from a metal sheet coil 2 to an inlet guide above the coil. The corrugation rollers 3, 3 ... Are fed horizontally between the upper and lower rows. These corrugation forming rollers 3 are formed by increasing the corrugation in order of 1, 2, 3, ... It is something that goes. Each corrugation roller 3 forms a corrugation in the central portion between the edges of the narrow thin metal sheet 1 in the transport direction. Each corrugation roller 3 is driven to move a narrow thin metal sheet 1 from right to left as shown in FIG. The number of these corrugation forming rollers 3 is determined by the corrugation. That is, when forming a corrugated shape having a complicated shape, the number of rollers increases accordingly. These corrugation rollers 3 form not only corrugations between the edges of the metal sheet but also seams at the edge of the sheet. After forming the corrugations between the edges and the edge seams, the metal sheets are further transported and, according to the annular guide 5 and the cylindrical body forming roller 9 which are angled by approximately the width of the corrugated sheet 4, As the inner circumference of the annular guide 5 is raised, a groove is formed so that the groove of the cylindrical body forming roller 9 and the groove of the corrugated plate 4 mesh with each other to form the meshing portion 8. The meshing part 8 is formed at a position where the front side of the corrugated plate 4 makes one round along the annular guide tool 5, and the rear side passes through the corrugation forming roller 3 and then enters between the upper folding roller 10 and the lower folding roller 11. Be done. As shown in FIG. 2, a spiral is formed along an annular guide 5 that guides in a spiral shape and a cylindrical shape, and the groove is formed between the upper folding roller 10 and the lower folding roller 11. When you enter, the caulked positional relationship will be established, and the seams will be caulked. The upper folding roller 10 generally has a V-shaped concave portion that is open outward in the radial direction in an annular shape, and is formed on the outer peripheral surface of the upper folding roller 10, while the lower folding roller 11 has an annular shape in the radial outside. A convex portion that protrudes toward is formed, and this convex portion meshes firmly with the concave portion, and corrugations and crimps are formed. Next, the annular guide tool 5 which also serves as a guide for forming a spiral loop as described above will be described in detail with reference to FIG. A narrow metal plate is curved in an arc shape, and at both ends, mounting pieces 7 for mounting to the main body of the spiral cylindrical body forming device are integrally or separately secured by welding or the like. . A mounting hole 12 is formed in the mounting piece 7. Further, a locking portion 6 for fixing the upper portion is fixed to the arc-shaped top portion by welding or the like. Then, as shown in the figure, the metal plate curved in an arc shape is twisted so as to open in a direction corresponding to the arrow by an amount substantially corresponding to the width of the corrugated plate 4. Once the seams have been crimped, the corrugated plate does not move in the width direction, and the cylindrical body is formed in a spiral shape by driving the cylindrical body forming roller 9. Since this annular guide 5 is only fixed at 3 points on both ends and the top, it can be easily replaced by preparing several types according to the diameter of the duct. Obtainable.

[0007]

[Effect of device]

 As a result of adopting the above configuration, the present invention can obtain the following effects. (1) By preparing several kinds of annular guide tools having different diameters, it is possible to form a spiral cylindrical body of each diameter by a corrugated plate.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing a spiral cylindrical body forming apparatus for forming a narrow thin metal sheet on a corrugated sheet and spirally winding the corrugated sheet to form a cylindrical body according to an embodiment of the present invention. is there.

FIG. 2 is a schematic side view illustrating a portion of an annular guide tool in the embodiment.

FIG. 3 is a schematic enlarged perspective view showing an annular guide tool of the present invention.

[Explanation of symbols]

1 ... Narrow thin metal sheet 2 Metal sheet coil 3 Corrugation roller 4 Corrugated plate 5 Circular guide 6 Locking portion 7 Mounting piece 8 Interlocking portion 9・ ・ ・ Cylindrical body forming roller 10 ・ ・ ・ Upper folding roller 11 ・ ・ ・ Lower folding roller 12 ・ ・ ・ Mounting hole

Claims (1)

[Scope of utility model registration request] 1. A narrow long thin metal sheet made of metal is passed between upper and lower corrugation forming rollers to form a corrugated shape, and the thin long metal sheet having the corrugated shape is spirally wound. , In the spiral cylindrical body forming device for forming a cylindrical duct by crimping each end, a narrow metal plate is curved in an arc shape, and the width of the thin long metal sheet with the corrugated shape is formed. A guide for forming a spiral cylindrical body that is formed by twisting only a width that substantially conforms to.