JPH0538891Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application] The present invention relates to a mold made of synthetic resin material, and to explain in more detail, the present invention includes a lower mold and a first hinge that is attached to the lower mold so as to be openable and closable. A synthetic resin material comprising: an upper mold having been inserted between the lower mold and the upper mold, and a core mold which is attached to the lower mold or the upper mold via a second hinge part so as to be freely openable and closable. Regarding molds.

[Conventional technology]

Conventionally, molds for synthetic resin materials have been known to include a lower mold, an upper mold that is matched to the lower mold, and a core mold that is inserted between the lower mold and the upper mold. There is.

When molding seat cushions, seat backs, headrests, etc. for vehicles, etc., as shown in FIG. 4 to form a hollowed out portion.

The lower mold 2 and the upper mold 3 are attached to be openable and closable by a first hinge portion 5 on one side, and are clamped on the other side by a clamp mechanism 6, and the front of the clamp mechanism 6 clamps the lower mold 2 and the upper mold 3. The core mold 4 is inserted into the hole.

[The problem that the idea attempts to solve]

However, in the conventional molding die 1, the core die 4
was simply inserted or attached so that it could be opened and closed by a hinge, so the mold mating part 7 between the core mold 4 and the upper mold 3, or the mold matching part 7 between the core mold 4 and the lower mold 2 This had the disadvantage that the synthetic resin material leaked from the mold matching part 8, etc., and burrs were generated. In addition, when the core mold 4 is clamped to the lower mold 2 and the upper mold 3 by clamp mechanisms, the number of clamp mechanisms increases, the mold 1 becomes larger, and this is uneconomical.

The purpose of this invention is to eliminate the risk of increasing the size of the mold without increasing the number of clamp mechanisms, and to eliminate the risk of synthetic resin material leaking from the mold matching area between the core mold and the upper or lower mold. There is no burr etc.,
Therefore, it is an object of the present invention to provide a mold for a synthetic resin material that allows easy deburring work and is highly economical.

[Means to solve the problem]

The present invention was made in view of the above-mentioned problems, and includes a lower mold, an upper mold attached to the lower mold via a first hinge part so as to be freely openable and closable, and an insert inserted between the lower mold and the upper mold. and a core mold that is attached to the lower mold or the upper mold via a second hinge portion so as to be freely openable and closable, the lower mold and the upper mold are connected to a lower frame and an upper frame. A clamp mechanism is provided between the lower frame body and the upper frame body, and a clamping surface between the lower frame body or the upper frame body and the core mold is formed as an inclined surface, When the frame body is clamped by the clamp mechanism, the lower die and the upper die are clamped, and either the lower frame body or the upper frame body holds the core die inside along the inclined surface of the clamping surface. Press to
The core mold is characterized in that the core mold is brought into close contact with the lower mold or the upper mold and clamped.

[Effect]

According to the present invention, the clamping surface between the core mold and the lower frame body or the upper frame body is formed as an inclined surface, and when the lower frame body and the upper frame body are clamped by the clamp mechanism, the lower frame body or the upper frame body Either one of the frames presses the core mold inward along the inclined surface of the clamping surface, and the core mold is clamped in close contact with the lower mold or the upper mold.

〔Example〕

The mold for synthetic resin material according to the present invention will be described in detail below with reference to the drawings.

1 and 2 schematically show an embodiment of the present invention, in which a mold 11 includes a lower mold 12 and a first hinge portion 15 connected to the lower mold 12. The upper mold 13 is attached to be openable and closable. A core mold 14 is provided between the lower mold 12 and the upper mold 13.
In this embodiment, the core mold 14 is attached to the lower mold 12 via the second hinge part 16 so as to be openable and closable, but it may be attached to the upper mold 13.

The lower mold 12 is attached to the lower frame 12a,
Further, the upper mold 13 is attached to the upper frame 13a. Note that the lower frame 12a and the upper frame 13a may be formed integrally with the lower mold 12 and the upper mold 13, respectively.

A clamp mechanism 21 is provided between the lower frame 12a and the upper frame 13a, and this clamp mechanism 21 has one end locked to a bracket 22 attached to one side of the upper frame 13a. The operating rod 23 and the other end of the operating rod 23 are connected to a bracket 2 provided on one side of the lower frame 12a.
4.

As shown in FIG. 2, the upper frame 13a and the core mold 1
A clamping surface 31 with one side portion 14a of the upper mold 13 is formed as an inclined surface, and this inclined surface is formed upward to the left so that the core mold 14 is pressed inward, and the upper mold 13
A mold mating surface 17 between the core mold 14 and the core mold 14 is formed to be inclined downward to the left.

Therefore, the lower frame 12 is clamped by the clamp mechanism 21.
When a and the upper frame 13a are clamped, the lower mold 12 and the upper mold 13 are matched on the first hinge part 15 side, and the upper frame 13a and the core mold 14 are matched on the clamp mechanism 21 side. The one side portion 14a abuts on the inclined surface of the clamping surface 31, the one side portion 14a of the core mold 14 is pressed inward, and the inclined surface of the mold matching surface 17 of the upper mold 13 and the core mold 14, The core mold 14 is pressed against the upper mold 13. In addition, the lower mold 12 and the core mold 14 have a mold mating surface 18 formed at an angle.
is pressed against.

The above is the configuration of one embodiment of the mold 11 according to the present invention. According to such a configuration, the upper frame 13
a, that is, the upper mold 13 is opened by the first hinge part 15, the core mold 14 is placed above the lower mold 12 by the second hinge part 16, and molding of synthetic resin material, foamed synthetic resin material, etc. Inject the material and remove the upper frame 13a.
When it is clamped to the lower frame 12a by the clamp mechanism 21, the lower mold 12 and the upper mold 13 are brought into close contact with each other, and the core mold 14 is brought into close contact with the lower mold 12 and the upper mold 13. It is something that is tightened.

[Effect of idea]

According to the present invention, it is possible to clamp the lower mold, upper mold, and core mold closely together by providing only one clamping mechanism, and there is no risk of increasing the size of the mold, and the core mold There is no risk of the synthetic resin material leaking from the mold matching area between the mold and the upper mold, and the mold matching area between the core mold and the lower mold, and burrs do not occur, so deburring work can be performed easily. , it is possible to obtain a mold made of a synthetic resin material with excellent economic efficiency.

[Brief explanation of drawings]

Figures 1 and 2 each schematically show an embodiment of a mold for synthetic resin material according to the present invention.
The figure is an explanatory cross-sectional view, FIG. 2 is an explanatory enlarged cross-sectional view of a clamping surface, and FIG. 3 is an explanatory cross-sectional view of a conventional mold. In the figure, 11...molding mold, 12...lower mold, 12a
... lower frame body, 13 ... upper mold, 13a ... upper frame body, 14 ... core mold, 14a ... one side part, 15 ...
...First hinge part, 16... Second hinge part, 1
7, 18...Mold matching surface, 21...Clamp mechanism, 31...Clamp surface.

Claims (1)

[Scope of utility model registration request] a lower mold; an upper mold attached to the lower mold via a first hinge portion so as to be freely openable and closable; and a second hinge portion inserted between the lower mold and the upper mold and attached to the lower mold or the upper mold. In a synthetic resin mold, the lower mold and the upper mold are respectively attached to a lower frame and an upper frame,
A clamp mechanism is provided between the lower frame body and the upper frame body, a clamping surface between the lower frame body or the upper frame body and the core mold is formed as an inclined surface, and the lower frame body and the upper frame body are clamped together by the clamping mechanism. When clamped by the mechanism, the lower mold and the upper mold are clamped, and
Either the lower frame or the upper frame presses the core mold inward along the inclined surface of the clamp surface, so that the core mold is brought into close contact with the lower mold or the upper mold and clamped. A mold made of synthetic resin material that is characterized by: