JPH0548734B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method of forming a gutter joint and a mold thereof.

(Prior Art) As a conventional method for forming a gutter joint and a mold thereof, for example, those shown in FIGS. 9 to 12 are known.

The mold for this conventional gutter joint is shown in Figures 9 and 1.
As shown in FIG.
3 and a predetermined distance t01.

In addition, 01 is the groove for the protrusion, and the slide plate 0
It can be closed by 2.

In addition, as shown in the conventional molding method and FIGS. 11 and 12, using the above-mentioned mold, a synthetic resin material is first filled in the space between the male mold 03 and the female mold 04, A main body 05 is formed.

Next, the predetermined distance between the male type 03 and the female type 04 is t.
While maintaining 01, use male type 03 for water stop material.
Slide the slide plate 02 until all t02 are opened, form a water stop material gap t02 between the gutter joint body 05 and the male mold 03, and insulate the water stop material gap t02 with rubber or the like. Filled with soft material,
A water stop material 07 having a protrusion 06 on the upper surface was formed integrally with the gutter joint body 05, and the molding of the gutter joint E was completed.

An example of such a conventional method of forming a gutter joint and its forming mold is disclosed in West German Patent Application Publication Specification No.
No. 29360165.

(Problems to be Solved by the Invention) However, in the conventional gutter joint forming method and its mold, the step part 08 for water-stop material is formed on the gutter joint main body 05 by the slide plate 02. Therefore, there was a problem in that the water stop material step portion 08 was formed on the same surface with no difference in height.

In addition, in the gutter joint E formed by the above-mentioned molding method and mold, as shown in FIG.
Since the water stop material 07 is welded to the stepped part for the water stop material, joint parts such as eaves gutters that are joined to the inner peripheral surface of the water stop material 07 expand and contract due to temperature changes. In this case, there was a risk that the water stop material 07 would fall off or turn over from the water stop material step portion 08.

One possible solution to this problem is to provide a piece to prevent the waterproof material from falling off at the stepped portion 08.
For this purpose, it was necessary to add another mold and a molding process.

(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, in the method for forming a gutter joint of the present invention, A step part for water stop material is formed on the gutter joint body, and a protrusion is formed on a part of the inner surface of the step part for water stop material. Place the mold and place it between the male mold and the female mold at a predetermined distance.
The gutter joint body is formed by filling a synthetic resin material into the gutter joint body, and then the male mold and the female mold are kept separated for a predetermined period so as to form protrusions on the upper surface of the water stop material. The part where the protrusion is to be formed on the inner surface of the step part is packed up to the mold surface in the direction away from the female mold, and the closed part of the water stop material space is opened to open the water stop material space.
The water stop material is formed integrally with the gutter joint main body by forming the water stop material space and filling the water stop material space with a soft material. A mold for a gutter joint comprising a male mold in which a slide plate for closing the slide plate is slidably provided, and a female mold disposed with a predetermined space between the male mold and the female mold, in which a part of the slide plate is slidably provided. At the same time, an opening is provided in the cut-off part of the water-stop material mold part, and a protrusion is formed on the inner surface of the water-stop material step part of the gutter joint in which the water-stop material is provided in the opening. A movable bush having grooves is provided so as to be able to protrude toward the female mold side.

(Function) Therefore, it consists of a male type and a female type, and the male type is slidably provided with a slide plate that closes the gap for the water-stopping material, and the water-stopping material of the gutter joint in which the water-stopping material is provided. A step part for the water stop material is formed on the gutter joint body using a mold in which a movable bush having a groove for forming a protrusion on the inner surface of the step part is protrusively provided. A synthetic resin material is filled between the male and female molds, which are formed so as to form a protrusion on a part of the stepped part, to form the gutter joint body, and then the gutter joint body is formed. By using a molding method in which a soft material is filled into the gutter joint body to form a water-stop material integrally with the gutter joint body, the gutter joint body has a stepped portion for the water-stop material having a protrusion and a protruding edge in part. At the same time, a gutter joint can be formed in which the water stop material is firmly fixed to the edge of the ridge.

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

First, the configuration of a mold for a gutter joint will be explained with reference to FIGS. 1 and 2.

A is a molding die for the gutter joint B, which is composed of a male die 1 and a female die 2 disposed between the male die 1 and a predetermined distance t1.

The male mold 1 consists of a fixed mold 3, three movable bushes 4, 4, 4 that can protrude toward the female mold 2, and a slide plate 8. It is inserted into an opening 6 provided in the mold part 5.

Three water-stop material grooves 7, 7, 7 provided in parallel are continuously formed in the water-stop material mold part 5 of the fixed mold 3 and the mold surfaces 3a, 3a of the movable bush 4. A slide plate 8 having a cutout portion on the movable bushing 4 is provided in the water stop material mold part 5 so as to be slidable with the groove 7 of the water stop material mold part 5 closed. There is.

In addition, in the movable bush 4, in the protruding state, the mold surface 4a forms the same plane as the surface of the female mold 2 side of the slide plate 8, and in the retracted state, the mold surface 4a forms the same plane as the mold surface 3a of the fixed mold 3. They are configured to form the same plane.

Next, a method of forming the gutter joint B will be explained with reference to FIGS. 3 to 7.

First, the movable bush 4 is set in the protruding state, and the groove 7 of the water stop material mold part 5 of the fixed mold 3 is closed by the slide plate 8, and the male mold 1 is installed. The female mold 2 is placed through t1 for a predetermined period of time, and the synthetic resin material is filled in the predetermined period of time t1 to form the gutter joint body 9. still,
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 3 and the female mold 2 are held at t1 for a predetermined period, and the movable bush 4 is pushed in the direction away from the female mold 2 (in the direction of arrow C) using a rod (not shown) or the like. , the waterstop material grooves 7 between the fixed mold 3 and the movable bush 4 are made to be continuous, and the slide plate 8 is slid until just before it separates from the gutter joint body 9 to form a stop between the fixed mold 3 and the gutter joint body 9. The water stop material 10 is formed by forming a water stop material space t2 and filling the water stop material space t2 with a soft material such as rubber.
is formed in a welded state on the gutter joint main body 9, and the molding of the gutter joint B is completed.

It should be noted that the operation of the slide plate 8 is the same as the conventional one, and can be easily understood by referring to FIGS. 9 to 12 and the above description.

Therefore, the gutter joint main body 9 is partially formed with a stepped portion 13 for water-stopping material having a protrusion 11 and a protruding edge 12, and a continuous protrusion 14 can be formed on the upper surface of the water-stopping material 10. It is possible.

When using the gutter joint formed by the above-mentioned mold and its molding method, the joint parts such as the eaves gutter joined to the inner circumferential surface of the water stop material 10 will expand and contract due to temperature changes. Even if this occurs, the protrusions 11 and the protruding edges 12 formed on the stepped portion 13 for the water stop material can prevent the water stop material 10 from falling off and turning up.

Further, by forming continuous protrusions 14 on the upper surface of the water stop material 10, it is possible to prevent water from leaking from the joint portion with the joint component.

Although the embodiments of the present invention have been described above in detail with reference to the drawings, the specific configuration is not limited to these embodiments, and method changes, design changes, etc. may be made without departing from the gist of the present invention. are also included in the present invention.

Further, in the embodiment, the movable bushing is held in by a rod, but it may be held in by negative pressure, a spring, urethane rubber, or the like.

(Effects of the Invention) As described above, according to the gutter joint molding method and its molding die of the present invention, the slide plate that closes the water-stopping material gap is slidably provided, and the water-stopping material is also provided. The step part for the water stop material is formed on the main body of the gutter joint using a mold in which a movable bushing having grooves for forming protrusions on the inner surface of the step part for the water stop material of the gutter joint body can be projected. A gutter joint body is formed by filling a synthetic resin material between the male and female molds, which are formed so as to form a protrusion on a part of the stepped portion for the waterproof material, and then forming the gutter joint body. By a molding method in which a soft material is filled into the gap between the water stop material and the water stop material is formed integrally with the gutter joint body,
A part of the gutter joint body is formed with a stepped portion for a waterproof material having a protrusion and a protruding edge.

Furthermore, it is also possible to simultaneously form a gutter joint in which continuous protrusions are formed on the upper surface of the water stop material.

Furthermore, the gutter joint described above can be molded using only one mold.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view showing a mold for a gutter joint according to an embodiment of the present invention, Fig. 2 is a longitudinal sectional view taken along the - line in Fig. 1, and Figs. 3 to 6 are moldings of a gutter joint according to an embodiment. An explanatory diagram showing the method, FIG. 7 is a perspective view showing an example of a gutter joint formed by the method of forming a gutter joint according to the embodiment and a mold, and FIG. 8 is a cross-sectional view showing a conventional mold. Fig. 9 is a longitudinal sectional view taken along the - line in Fig. 8, Figs. 10 and 11 are explanatory diagrams showing a conventional joint forming method, and Fig. 12 is a conventional joint forming method and a forming die. It is a perspective view showing an example of a formed gutter joint. DESCRIPTION OF SYMBOLS 1...male type, 2...female type, 3a...mold surface, 4...movable bush, 5...mold part for water stop material, 7... groove, 8...
Slide plate, 9...Gutter joint body (joint body),
DESCRIPTION OF SYMBOLS 10... Water stop material, 11... Projection, 13... Water stop material step part, 14... Projection, t1... Gap, t2... Water stop material gap.

Claims (1)

[Scope of Claims] 1. A male type having a stepped part for a water-stopping material formed on the gutter joint body, and a protrusion formed on a part of the inner surface of the stepped part for the water-stopping material, and a male type having a predetermined shape with the male type. A female mold is placed between the male mold and the female mold, and a synthetic resin material is filled in the predetermined space between the male mold and the female mold to form a gutter joint body.Next, a protrusion is formed on the upper surface of the water stop material. As if forming,
While maintaining the male and female molds for a predetermined period of time,
The part forming the protrusion on the inner surface of the stepped part for water-stopping material is packed in the direction away from the female mold to the mold surface, and the closed part of the space for water-stopping material is opened to form the space for water-stopping material. A method for forming a gutter joint, characterized in that the water stop material is formed integrally with the gutter joint body by filling the space for the water stop material with a soft material. 2. In a mold for a gutter joint, which includes a male mold that is slidably provided with a slide plate that closes a water-stopping material space, and a female mold that is placed between the male mold and a predetermined space. , while cutting out a part of the slide plate, providing an opening in the mold part for the water-stopping material of the cut-out part, and forming an opening on the inner surface of the stepped part for the water-stopping material of the gutter joint in which the water-stopping material is provided in the opening. A mold for a gutter joint, characterized in that a movable bush having a groove for forming a protrusion is provided so as to be able to protrude toward the female mold side.