JPH0456643B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for manufacturing a permeable element, which is applied to a permeable device that removes minute foreign matter mixed in a fluid such as gas or liquid. The object is, inter alia, to provide a method for efficiently producing substantially short cylindrical over-elements having a plurality of concentric chevron-shaped pleats made of paper, non-woven fabric or other materials.

[Conventional technology]

Traditionally, this kind of structure, i.e., the production of over-elements having multiple chevron-shaped pleats concentrically, involves folding triangular or fan-shaped paper with one end pointed and the other end open so that the cross section becomes wavy. Then, a method is adopted in which this is circularly curved into a ring shape and the two ends are joined together to form a cylindrical body having concentric chevron folds.

[Problem that the invention attempts to solve]

Although the over-element having the above-mentioned shape has good over-efficiency, it is difficult to manufacture; for example, in the above-mentioned method, the material itself, which has a large number of chevron-shaped folds, is forcibly bent to form a cylindrical shape. Therefore, the difference in the radius of each peak and valley causes a significant difference in circumference, which not only makes it difficult to form a cylindrical body, but also causes adjacent folds to come into contact with each other, causing wrinkles and wrinkles in the entire body. In practice, it has been difficult to obtain a good product having concentric pleats at predetermined intervals due to deformation.

[Means for solving problems]

As a result of intensive research, the present inventor has solved the conventional problems and can easily obtain a product in which peaks and valleys are correctly arranged concentrically at predetermined intervals. The method of the present invention has been completed, which allows a polygonal cylindrical shape and a desired size of the main body to be easily obtained as needed.

That is, the present invention, in manufacturing a super-element having a large number of concentric folded chevron structures,
An upward unit is made of a sheet material in advance to form a cylindrical or polygonal shape, and is expanded at the upper end so that the diameter of the upper end is larger than the diameter of the lower end. A large number of downward unit bodies each having a diameter larger than that of the upper end are prepared, and from among these, upward unit bodies and downward unit bodies are sequentially selected whose top and bottom diameters match. This is a method of manufacturing a super-element having a concentric pleat structure, which is characterized in that the elements are arranged in a concentrically fitted manner alternately and the upper and lower matching peripheral edges are joined to each other.

[Effect]

As described above, when each unit body is sequentially fitted concentrically from the center or from the outside, the upper and lower edge portions of the unit bodies alternately coincide with each other. Then, by joining these parts together by means of adhesive or fusion, they can be easily integrated to form a super-element having a large number of concentric folded chevron structures.

〔Example〕

FIG. 1 is a perspective view showing a cross section of a target over-element cut vertically from the center. 1, 2,
Reference numerals 5 and 7 are upward unit bodies made of sheet material, and 2, 4, and 6 are downward unit bodies. 1′,
2', 3', and 4' are joints of each unit. Second
The figure is a perspective view illustrating a manner in which the unit bodies are fitted and arranged concentrically. Since the diameter a of the upper end of the upward unit 1, which is the center of the main body, and the diameter b of the upper end of the downward unit 2, which is adjacent to the outside, are the same, when the two are fitted together, the upper end periphery 1a of the former Since the latter upper end periphery 2b coincides with each other, this portion 1' is joined.
Next, since the diameter c' of the lower end of the upward unit 3 is equal to the diameter b' of the lower end of the downward unit 2, when it is fitted, the lower end circumferential edges 2b' and 3c' of the downward unit 2 are The lower end peripheral edges 3c' of the direction units 3 coincide at 2' as shown in FIG. Similarly, since the diameter d of the upper end of the downward unit 4 and the diameter c of the upper end of the upward unit 3 are equal, each peripheral edge 3c
and 4d coincide, and the diameter d' of the lower end of the downward unit 4 and the diameter e' of the lower end of the upward unit 5 are equal, so the circumferential edges 4d' and 5e' coincide. These matching parts 3', 4', etc. are respectively joined.

Thereafter, they are fitted one after another in the same way, and the matching peripheral edges are bonded by fusing or adhesive to obtain an over-element of any size as shown in FIG. 1. It should be noted that although the height of each unit is usually the same, it is of course possible to use different heights as necessary. Further, the shape is not limited to a cylindrical shape, but may be a polygonal cylindrical shape.

〔effect〕

According to the method of the present invention, not only cylindrical shapes but also polygonal shapes can be freely obtained, and elements of arbitrary sizes can be easily manufactured depending on the number of fitting units. And each fold part does not touch,
It is possible to evenly produce excellent products with high overefficiency in which the formation of peaks and valleys is reliably maintained. Furthermore, since the unit body is extremely easy to manufacture and easy to assemble, productivity is high and its effects are extremely large.

[Brief explanation of the drawing]

FIG. 1 shows an example of a cross-element obtained by the present invention, and is a perspective view showing its cross section, and FIG. 2 is an exploded perspective view showing the assembly order. 1, 3, 5...Upward unit body, 2,4,6...Downward unit body, a, b, c, d, e...Upper end diameter, a',
b′, c′, d′, e′…lower end diameter.

Claims (1)

[Claims] 1. When manufacturing a super-element having a large number of concentric pleats in a chevron shape, the sheet material is used in advance to form a cylindrical or polygonal tube shape, and expand at the top so that the diameter of the upper end is equal to that of the lower end. Create a large number of upward unit bodies that are formed larger than the diameter, and conversely, many downward unit bodies that expand at the bottom and have a diameter at the lower end larger than the diameter at the upper end. A concentric pleat characterized in that upward unit bodies and downward unit bodies are sequentially selected whose top and bottom diameters match and are alternately fitted and arranged concentrically, and the peripheral edges of each unit whose top and bottom coincide are joined to each other. A method for producing a superelement having a folded structure.