JPH0568332B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a gutter and a pipe joint, a method for molding the same, and a mold for the same.

(Prior Art) Conventional gutters and pipe joints, methods of molding them, and molds thereof are known, for example, as shown in FIGS. 10 and 11.

This conventional gutter joint is one in which a water stop material 04 having a protrusion 03 formed on the upper surface is integrally formed on a step part 02 for water stop material formed on a gutter joint body 01. The step portion 02 was formed on a horizontal surface.

In addition, the mold for the gutter joint described above includes a male mold 06 in which a slide plate 05 is provided so as to be slidable in the horizontal direction with the water stop material gap t01 closed at the front, and a male mold 06 and a predetermined It consisted of a female die 07 arranged with a gap t02 in between, and a groove 08 was formed on the abutment surface of the slide plate 05 of the male die 06.

Note that the groove 08 can be opened by sliding the slide plate 05.

In addition, as a method for forming the gutter joint, first, using the above-mentioned mold, the gap t02 between the male mold 06 and the female mold 07 is filled with a synthetic resin material to form the joint body 01.

Next, a predetermined gap t between the male mold 06 and the female mold 07
02, slide the slide plate 05 in the horizontal direction until all the grooves 08 of the male mold 06 are opened to form a gap 04 for the water stop material,
The water stop material gap t01 was filled with a soft material such as rubber, and a water stop material 04 having a protrusion 03 on the upper surface was formed integrally with the joint body 01, and the molding of the gutter joint was completed. .

Similar to the conventional gutter joint described above, a conventional pipe joint also has a gap for a water stop material formed on the inner surface in the circumferential direction, and is filled with a soft material such as rubber.

An example of such a conventional gutter and pipe joint, a method for molding the same, and a mold for the same is described in West German Patent Application No. 29360165.

(Problems to be Solved by the Invention) However, in the case of gutters and pipe joints molded by such conventional molding methods and molds, the step part 02 for the water stop material of the joint body 01 is on a horizontal surface. The water stop material 04 is formed in the stepped portion 02 for the water stop material.
Because they are integrally formed, the thickness of the end of the gutter and pipe joint is the same as the thickness of the joint body 01 and the water stop material 04,
Connection parts 09 such as eaves gutters and pipes are attached to the inner peripheral surface of the water stop material 04
If you connect the eaves gutter or pipe joint and the connecting parts 09
There was a problem in that a large step was formed at the connection part, spoiling the aesthetic appearance of the gutters and pipes.

In addition, since the step part 02 for water stop material is a horizontal surface, the step part 02 for water stop material and the outer peripheral surface of the connection part 09 are in a parallel state, and the connection part 09 due to temperature changes.
There was a problem in that the water stop material 04 fell off the water stop material step part 02 as the water stop material 9 expanded and contracted.

(Means for Solving the Problems) The present invention has been made for the purpose of solving the above-mentioned problems, and in order to achieve this purpose, the gutter and pipe joint of the first invention have the following features: In a gutter and a pipe joint in which a water-stopping material with a protrusion formed on the upper surface is integrally formed with a water-stopping material step portion formed on the joint body, the water-stopping material step portion is on the end side of the joint body. In the method for forming a gutter and pipe joint of the second invention, the joint is formed so as to be inclined diagonally upward to A male mold and a female mold are arranged with a predetermined gap in the main body so as to form a stepped part for water stop material that slopes diagonally upward toward the end side of the joint body, and With the gap closed, a synthetic resin material is filled in a predetermined gap between the male mold and the female mold to form a joint body, and then a protrusion whose tip is located on the same horizontal plane is formed on the top surface of the water stop material. The water-stop material of the joint body is removed by opening the water-stop material gap of the male mold while maintaining a predetermined gap between the male mold and the female mold, and filling the water-stop material gap with a soft material. In the mold for a gutter or pipe joint according to the third aspect of the present invention, a water stop material is integrally formed in the stepped portion, and a male mold is provided with a slidable slide plate for closing the gap for the water stop material; A gutter comprising: a female mold disposed with a predetermined gap between the mold and the male mold, the slide plate abutting surface of the male mold being provided with grooves for forming protrusions on the upper surface of the water-stopping material; In the mold for the pipe joint, the slide plate was provided obliquely upward in the drawing direction, and the grooves were formed with stepped depths so that the tips of the protrusions on the upper surface of the water stop material were located on the same horizontal plane.

(Function) Therefore, in the gutter or pipe joint of the first invention, since the thickness of the end portion can be made the thickness of the joint body,
By forming the end portion of the joint body thinly, it is possible to reduce the level difference in the connecting portion when a connecting part such as an eave gutter or a pipe is connected to the end portion of the gutter or pipe joint.

In addition, since the connecting parts are installed horizontally with respect to the stepped part for the water-stopping material that is formed obliquely upward toward the end of the joint body, the water-stopping material can can be prevented from falling off from the step part for the waterproof material.

Furthermore, a male mold and a female mold are arranged with a predetermined gap in between, and the male mold is provided with a slide plate diagonally upward in the drawing direction for closing the gap for the water stop material, and a stopper is provided on the slide plate abutting surface. A synthetic resin material is filled into a predetermined gap between the male mold and the female mold using the mold of the third invention, which is formed with stepped depths so that the tips of the protrusions of the water material are located on the same horizontal plane. to form a joint main body, and then open the male water stop material gap and fill the water stop material gap with a soft material to apply the water stop material to the water stop material stepped portion of the joint body. By the molding method of the second invention, which integrally forms the water stop material, the step part for the water stop material can be formed to be inclined diagonally upward toward the end of the joint body without adding any molded parts or molding process. ,
It is possible to form a gutter or a pipe joint in which the tips of the protrusions of the water stop material are located on the same horizontal plane.

(Example) Hereinafter, a first example of the present invention will be described in detail with reference to the drawings.

First, the structure of the gutter joint will be explained with reference to FIGS. 1 and 2.

Reference numeral 1 denotes a gutter joint in which an eaves gutter 4 is connected to both ends of a joint body 3 via a water-stopping material 6.

The joint body 3 is made of hard synthetic resin,
A water stop material step portion 5 that slopes obliquely upward toward the end of the joint body 3 is formed over the inner circumferential surface of both ends.

Further, the outer edge corners of both ends of the joint body 3 are beveled in order to reduce the thickness of the ends of the joint body 3.

The water stop material 6 is the step part 5 for water stop material of the joint body 3.
It is integrally formed from a soft material such as rubber.
Three protrusions 8, 8, 8 are formed in parallel on the upper surface of the flat plate portion 7.

The protrusions 8, 8, 8 are formed in stepwise sizes so that their tips are located on the same horizontal plane when the water stop material 2 is integrally formed with the water stop material step portion 5.

Next, the configuration of the mold for the gutter joint will be explained with reference to FIGS. 3 and 4.

9 is a mold for forming a gutter joint, which includes a male mold 10;
It consists of a male mold 10 and a female mold 11 arranged with a predetermined gap t1 in between.

The male mold 10 consists of a fixed piece 12 and a slide plate 13 that is slidably provided on the fixed mold 12 and closes and opens the water stop material gap t2 of the fixed mold 12. The fixed mold 12 is a slide plate 1
3. The contact surface is formed diagonally upward outward,
The slide plate 13 is provided obliquely upward in the drawing direction.

Further, three grooves 14, 14, 14 are provided in parallel on the contact surface of the slide plate 13 to form protrusions 8, 8, 8 on the upper surface of the water stop material 6. 14, 14, 14 are formed with stepped depths so that the tips of the protrusions 8, 8, 8 are located on the same horizontal plane.

Note that the grooves 14, 14, 14 are opened simultaneously with the water stop material gap t2 by sliding the slide plate 13.

The female mold 11 has a portion that forms the outer peripheral surface of the end of the joint body 3 and is formed obliquely upward and outward.

Next, a method of forming a gutter joint using the above-mentioned mold will be explained with reference to FIGS. 5 to 7.

First, the fixed mold 1 is fixed by the slide plate 13.
Male type 1 with the water stop material gap t2 of 2 closed.
0 and a predetermined gap t with respect to the male mold 10.
A female mold 11 is installed through the hole 2, and the predetermined gap t2 is filled with a synthetic resin material to form the gutter joint body 3.

As the synthetic resin material, thermoplastic materials such as polyolefin resin, vinyl chloride, ABS resin, and polyamide resin can be considered.

Next, the fixed mold 12 and the female mold 11 are separated by a predetermined gap t.
1, slide the slide plate 13 diagonally upward until just before it separates from the gutter joint body 3 to open the water stop material gap t2 together with the grooves 14, 14, 14. The gutter joint 1 is formed by integrally welding the water stop material 6 to the joint body 3 by filling it with a soft material such as rubber.
Complete the molding.

Therefore, the gutter joint 1 shown at the beginning of the embodiment can be molded using the mold 9 and the molding method described above.

In addition, the thickness of the end of this gutter joint 1 is the same as the thickness of the gutter joint body 3, and the outer edge corners of both ends of the gutter joint body 3 are cut diagonally to reduce the thickness of the gutter joint 1.
When the eaves gutter 4 is connected to both ends of the gutter joint 1, the difference in level at the connecting portion can be reduced.

In addition, since the eaves gutter 4 is provided horizontally with respect to the water-stopping material step portion 5 formed obliquely upward toward the end of the gutter joint body 3, the eaves gutter 4 expands and contracts due to changes in temperature. No, the water stop material 6 is the step part 5 for water stop material.
It can prevent it from falling out.

Next, a second embodiment will be explained with reference to FIGS. 8 and 9.

This embodiment describes a pipe joint, its molding direction, and its mold, and the pipe joint 15 has a step part 17 for water stop material formed on the inner circumferential surface of the end of the pipe joint body 16, as shown in FIG. A water stop material 18 is integrally formed with the water stop material step portion 17.

In addition, as shown in FIG. 9, the molding die includes a cylindrical male mold 19 and a female mold 22 consisting of an upper part 20 and a lower part 21 having a semi-annular inner peripheral surface through a predetermined gap t1. This is what was placed.

In addition, 23 is a slide plate that closes the gap t2 for water stop material, and 24 is a protrusion, and the details of the structure and the molding method are the same as those of the first embodiment shown in FIGS. 1 to 7. Although the explanation will be omitted, since the slide plate 23 is to be pulled out diagonally, the slide plate 23 is divided into several parts.
Parts to be pulled out diagonally and parts to be pulled out horizontally are arranged alternately.

Although the embodiments of the present invention have been described above in detail with reference to the drawings, the specific configuration and method are not limited to these embodiments, and changes in design and methods are made within the scope of the gist of the present invention. - Even if there is an addition, it is included in the present invention.

For example, in the embodiment, both ends of the gutter and pipe joint have the structure of the present invention, but only one end may have the structure of the present invention, and the other end may have the conventional structure.

(Effects of the Invention) As described above, in the gutter and pipe joint of the first invention, the step portion for the water stop material is formed to be inclined obliquely upward toward the end of the joint body, and the water stop material is Because the tips of the protrusions are formed on the same plane, the thickness of the end of the gutter or pipe joint can be the same as the thickness of the joint body, and by forming the end of the joint body thin, it is possible to The step portion formed at the connection part with a connecting part such as a pipe becomes smaller, and the aesthetic appearance of the gutter or pipe can be improved.

In addition, since the connecting parts are installed horizontally with respect to the water-stopping material step formed obliquely upward toward the end of the gutter or pipe joint body, the connecting parts expand and contract due to temperature changes. It is possible to prevent the water stop material from falling off the water stop material step.

Furthermore, a male mold and a female mold are arranged with a predetermined gap in between, and the male mold is provided with a slide plate diagonally upward in the drawing direction for closing the gap for the water stop material, and a stopper is provided on the slide plate abutting surface. A synthetic resin material is filled into a predetermined gap between the male mold and the female mold using the mold of the third invention, which is formed with stepped depths so that the tips of the protrusions of the water material are located on the same horizontal plane. to form a joint body, and then open the male water stop material gap and fill the water stop material gap with a soft material to fill the water stop material stepped portion of the joint body with the water stop material. By the molding method of the second invention, which integrally forms the water stop material, the step part for the water stop material can be formed to be inclined diagonally upward toward the end of the joint body without adding any molded parts or molding process. ,
It is possible to form a gutter or a pipe joint in which the tips of the protrusions of the water stop material are located on the same horizontal plane.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a gutter joint according to the first embodiment of the present invention, Fig. 2 is a sectional view showing the main parts of the gutter joint according to the first embodiment, and Fig. 3 is a molding of the gutter joint according to the first embodiment. FIG. 4 is a cross-sectional view showing a mold for the gutter joint of the first embodiment; FIGS. 5 to 7 are explanatory diagrams showing the method for molding the gutter joint of the first embodiment; FIG. Figure 8 is the second
FIG. 9 is a cross-sectional view showing the main parts of the pipe joint of the second embodiment, and FIG.
Figure 0 is a sectional view showing the main parts of a conventional gutter joint.
The figure is a longitudinal sectional view showing a mold for a conventional gutter joint. 1... Gutter joint (joint), 3... Gutter joint body (joint body), 5... Step part for water-stopping material, 6... Water-stopping material,
8... Projection, 9... Molding mold, 10... Male mold, 1
1...Female type, 13...Slide plate, 14
... groove, 15 ... pipe joint (joint), 16 ... pipe joint body (joint main body), 17 ... step part for water stop material,
18...waterstop material, 19...male type, 22...female type, 23...slide plate, 24...projection,
t1... predetermined gap, t2... gap for water stop material.

Claims (1)

[Scope of Claims] 1. In a gutter and pipe joint in which a water-stopping material having a protrusion formed on the upper surface is integrally formed with a water-stopping material step formed in a joint body, the water-stopping material stepped portion A gutter and pipe joint, characterized in that the water stop material is formed to be inclined obliquely upward toward the end of the joint body, and the tips of the protrusions of the water stop material are located on the same horizontal plane. 2 A male mold and a female mold are arranged with a predetermined gap in the joint main body so as to form a stepped part for the water stop material that slopes diagonally upward toward the end of the joint main body, and the water stop material of the male mold is arranged with a predetermined gap. With the material gap closed, a predetermined gap between the male mold and the female mold is filled with a synthetic resin material to form a joint body, and then a protrusion whose tip is located on the same horizontal plane is placed on the top surface of the water stop material. By opening the male mold's water stop material gap while maintaining a predetermined gap between the male mold and female mold so as to form a strip, and filling the water stop material gap with a soft material, the joint main body can be stopped. A method for forming a gutter and a pipe joint, characterized in that a water stop material is integrally formed in a stepped portion for water material. 3. A male mold is provided with a slidable slide plate for closing a gap for water stop material, and a female mold is disposed with a predetermined gap from the male mold, and the slide plate of the male mold comes into contact with the male mold. In a mold for a gutter and pipe joint, the slide plate is provided obliquely upward in the drawing direction, and the groove is provided with a groove for forming a protrusion on the upper surface of the water-stopping material. A mold for gutter and pipe joints characterized by forming the protrusions on the upper surface of the material at a stepped depth such that the tips of the protrusions lie on the same horizontal plane.