JPH08219350A - Fitting material for inner caulking uneven pipe - Google Patents

Abstract

PURPOSE: To uniform fastening force to an uneven pipe generated in association with the uneven deformation of a caulking inner cylinder so as to make inner caulking firm by mounting fitting material with unevenness formed at a base cylinder in such a way as to correspond to an uneven mold, between the pipe surface and the inner cylinder of an inner caulking fitting to fasten the inner caulking fitting and the uneven pipe to each other. CONSTITUTION: In an uneven pipe fitting device by an inner caulking system of using an inner caulking jig 4 with an expanded part in the case of fitting an uneven pipe or a hose 2 to an inner caulking metal fitting 3, fitting material 1 with unevenness streaks 11 formed at a base cylinder in such a way as to correspond to an uneven mold 21 is mounted between the pipe surface and the inner cylinder 31 or pressing cylinder 32 of the inner caulking metal fitting 3 to fasten the inner caulking fitting and the uneven pipe to each other. The fitting material 1 is formed as the unevenness streaks 11, a spiral ring or a ring on the surface of the base cylinder.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fitting material for a concavo-convex tube for internal caulking, and more specifically, a concavo-convex tube, for example, a corrugated tube, a corrugated tube, a suction tube, or a spiral tube such as these, whose inner surface is The present invention relates to a fitting material for inner caulking which is applied to a tube having unevenness.

[0002]

2. Description of the Related Art The inventor of this application filed Japanese Patent Application No. 6-1890.
Japanese Unexamined Patent Publication No. 52-52 discloses a fitting material for inner caulking hoses.

As shown in FIG. 5, the above disclosed technique applies the fitting material according to the present invention when a difference C between the inner caulking metal fitting 3'and the hose 2'exists. As is apparent, if the band-shaped fitting material 10 'is wrapped around the fastening portion of the hose to fill the inside of the diameter difference portion C, and the expanding portion 11' of the inner caulking tool 1'acts in this state, Figure 6
As shown in FIG. 5, the caulking portion 31 ′ of the inner caulking tool is crimped, and at the same time, the hose and the fitting material are provided with the expanding portion 1 described above.
Inner caulking metal fitting 3 by pressing force adapted to the expansion amount of 1 '
Sandwiched inside.

[0004]

The above disclosed technique is applied to a smooth inner surface hose. If the inner surface of the hose or tubing is uneven, the inner caulking is effective even if the fitting material is applied as it is. I couldn't get it.

[0005]

As shown in FIG. 1, the present invention has an uneven surface 1 corresponding to an uneven surface 21 of an uneven tube (hose) 2.
It is intended to effectively perform internal crimping by mounting the fitting material 1 in which 1 is formed in the concavo-convex tube.

The fitting material 1 is a base cylinder 12 having concavities and convexities 11 formed on its cylindrical surface and is formed by extrusion molding. In addition, the unevenness has a shape corresponding to the uneven shape of the uneven tube such as an uneven line or a spiral line. The material for forming the concavo-convex tube and the fitting material is not limited to the synthetic resin.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to FIGS. FIG. 2 shows a means for mounting the fitting material according to the present invention in a concavo-convex tube and attempting to caulk it with a caulking jig. Are set so that the concave and convex portions correspond to each other, and the caulking inner cylinder 31 and the pressing cylinder 32 of the caulking metal fitting 3 are set.
The both materials are sandwiched between, and the collet-shaped embossing tool 42 and the taper rod 41 of the inner caulking jig 4 are fitted and inserted.

FIG. 3 shows a step of completing the inner caulking means, in which the taper rod 41 is moved into the die pressing tool 42.
Is expanded, and the caulking inner cylinder 31 functioning as a caulking plate is formed into an uneven shape, whereby the uneven line 11 of the fit material 1 is formed.
Are press-fitted into the concavo-convex mold 21 of the tube 2 to be integrated. As a result, the tip end of the concavo-convex tube 2 is integrally clamped between the pressing cylinder 32 of the caulking metal fitting 3 and the caulking inner cylinder 31.

[Other Embodiments] FIG. 4 shows a fitting material applied to a concavo-convex tube in which concavo-convex molds are formed on the inner and outer surfaces. A fitting material having a concavo-convex strip 11 formed on its surface is attached so as to correspond to the concavo-convex mold 11, and a fitting material 6 formed as a spiral ring 5 corresponding to the spiral strip on the spiral strip of the concavo-convex pattern 22 on the outer surface. The outer surface of the caulking metal fitting can be flattened by mounting the caulking metal holding cylinder 32 and the caulking inner cylinder 31 each having a flat inner surface.

Although not shown in the drawings, the fitting material is a base tube having a concavo-convex line or a concavo-convex spiral line formed therein, or a spiral ring or a concavo-convex groove is connected with a single ring or a connecting ring with a narrow strip. Can be arbitrarily designed, and these fitting materials can be arbitrarily selected depending on the shape of the concavo-convex tube, either of them or inside or outside of the tube. In addition, when the fitting material is attached, it is possible to ensure the position fixing by heat setting.

[0011]

EFFECTS OF THE INVENTION According to the present invention, a fitting material corresponding to the uneven shape is attached to a tube having an uneven shape on the outside, particularly the inside of the uneven tube, to flatten the caulking portion, The inner caulking can be made strong by uniformly applying the fastening force to the concavo-convex tube due to the concavo-convex deformation of the pressing cylinder, particularly the caulking inner cylinder.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part of a fit material according to the present invention.

FIG. 2 is a sectional view of a main part of the embodiment.

FIG. 3 is an explanatory view of the operation of the embodiment.

FIG. 4 is a cross-sectional explanatory view of a main part of another embodiment.

FIG. 5 is a cross-sectional explanatory view of a conventional inner caulking device.

FIG. 6 is a diagram for explaining the operation of a conventional inner caulking device.

[Explanation of symbols]

 1 Fitting material 2 Pipe (hose) 3 Inner caulking metal fitting 4 Caulking jig 5 Spiral ring 11 Concavo-convex strip 12 Base cylinder 21 Inner concavo-convex shape 22 Outer concavo-convex shape 31 Caulking inner cylinder 32 Presser cylinder

Claims (4)

[Claims] 1. An inner caulking type concavo-convex tube mounting device, wherein an inner caulking jig having an expansion portion is used when a concavo-convex tube or a hose is attached to the inner caulking metal fitting. An inner caulking device for an uneven tube, wherein a fitting material having an uneven strip corresponding to the uneven shape formed on a base tube is attached between the holding tube and the surface of the tube to fasten the inner caulking metal fitting and the uneven tube. 2. A fit material, wherein the fit material according to claim 1 is formed so as to form an uneven line on the surface of a base cylinder. 3. A fit material in which the fit material according to claim 1 is formed as a spiral ring. 4. A fit material formed by using the fit material according to claim 1 as a ring.