JPH03341Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a foam molding mold for a multilayered foam, and more specifically, the invention includes a lower mold and an upper mold that is matched to the lower mold. , relates to a foam molding mold for foam-molding a foam by injecting a stock solution of a foamed synthetic resin into the lower mold.

[Conventional technology]

BACKGROUND ART Conventionally, it has been known to foam-mold a foam using a foam mold 1 consisting of a lower mold 2 and an upper mold 3. When forming a multilayer foam, as shown in FIGS. 9 and 10, a core mold 4 is attached to the upper mold 3.
The foamed synthetic resin stock solution 5' is poured into the lower mold 2, and the upper mold 3 is molded onto the lower mold 2 to form the first foamed layer 5. The child mold 4 is removed, and a foamed synthetic resin stock solution 6' is poured into the upper part of the first foam layer 5 to form a second foam layer 6 that is harder than the first foam layer 5.
and an upper mold 3 from which the core mold 4 has been removed, and the third foam layer 6 is formed in a laminated state to obtain a multilayer foam 7.

In addition to those using the core mold 4, the upper mold 3
A multilayered foam 7 can be obtained in the same way by using a first upper mold having the shape of the core mold 4 and a second upper mold having the shape of only the upper mold 3. .

[Problem that the invention attempts to solve]

However, in the case of the foam mold 1 using the conventional core mold 4, the core mold 4 is attached to the upper mold 3,
This has the disadvantage that the work is complicated because the upper molds have to be removed, and when the first and second upper molds are formed separately and used sequentially to form a multilayer foam, the upper mold is removed. It is necessary to prepare two or more types of type 3, which is extremely uneconomical, and
When two molds are used, the space for storing the upper mold 3 of the foam mold 1 increases, and there is a risk that the working environment will deteriorate.

The object of the present invention is to provide a foam molding mold for a multilayer foam that can improve work efficiency, is extremely economical, and does not require an increase in storage space.

[Means for solving problems]

The present invention was developed in view of the above-mentioned problems, and includes a lower mold and an upper mold that is matched to the lower mold, and a foamed synthetic resin solution is injected into the lower mold to foam the foam. In the foam molding mold for molding, the upper mold includes an upper mold frame body, an upper mold body rotatably attached within the frame of the upper mold body via a rotation hinge, the upper mold frame body and the upper mold. a lock mechanism for regulating rotation with the main body, first and second molding surfaces are formed on the upper mold main body, and the first foam layer is formed on the first molding surface, and the first foam layer is formed on the second molding surface. It is characterized in that the second foam layer can be molded on each side.

[Effect]

According to the present invention, the upper mold is formed by an upper mold frame body and an upper mold body rotatably attached within the frame of the upper mold frame body via a rotation hinge, and a second mold body is attached to the upper mold body. Since the first and second molding surfaces are formed, the first foam layer is formed using the first molding surface, and then the upper mold body is inverted with respect to the upper mold frame body, and the second molding is performed. A second foam layer can be formed on top of the first foam layer using a surface, and there is no need to use two upper molds, and there is no need to perform work for attaching and removing a core mold. be.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a foam molding mold for a multilayer foam according to the present invention will be described in detail below with reference to the drawings.

FIGS. 1 to 3 each schematically show an embodiment of a foam molding mold according to the present invention. It is formed from 13.

The upper mold 13 has an upper mold frame 14 attached to the lower mold 12 via a pivot 17 so as to be openable and closable;
The upper mold body 16 is rotatably attached within the frame of the upper mold frame body 14 via a rotation hinge 15.

3 to 5 show a locking mechanism 21 that restricts the rotation of the upper mold body 16 with respect to the upper mold body 14.
is formed on an appropriate side of the A fixing bracket 22 is fixed to the upper mold frame 14, and a locking pin 23 is attached to the fixing bracket 22 so as to be able to move forward and backward, and the locking pin 23 is urged by a spring 24 in the direction of arrow a, which is the locking direction.

A lock hole 25 is provided in one side of the upper mold body 16, and the upper mold frame 14 is inserted into this lock hole 25.
A lock pin 23 is inserted through a through hole 26 formed through the hole.

A first molding surface 31 is formed on the back side of the upper mold body 16, and a first cavity 32 is formed between the first molding surface 31 and the molding surface 19 of the lower mold 12. It is formed in the space in which the first molding layer 33 is formed.

Further, a second molding surface 35 is formed on the surface side of the upper mold body 16, and a second molding surface 35 is formed between the upper mold body 16 and the lower mold body 12.
A cavity 36 is formed, and a space for forming a second foam layer 37 is formed above the first foam layer 33.

Next, the foam molding process of the multilayer foam 39 will be explained with reference to FIGS. 6 to 8.

First, as shown in FIG. 1, the upper mold body 16 is attached to the upper mold frame so that a first cavity 32 is formed by the first molding surface 31 of the upper mold body 16 and the molding surface 19 of the lower mold 12. 14 and its rotation is regulated by the lock pin 23 of the lock mechanism 21, open the upper mold frame 14 as shown in FIG.
A stock solution 33' of foamed synthetic resin for forming the first foamed layer 33 is poured into the lower mold 12.

Next, as shown in FIG. 6, the upper mold 13 is attached to the lower mold 12.
By matching the molds, the first foam layer 33 is molded by the first molding surface 31 of the upper mold body 16.

After molding the first foam layer 33, the upper mold body 14 is opened, and the lock pin 23 of the lock mechanism 21 of the upper mold body 16 attached to the upper mold body 14 is inserted into the fifth
Pull in the direction of arrow b as shown in the figure to release the lock.
The upper mold body 16 is inverted so that the second molding surface 35 faces the first foam layer 33 of the lower mold 12 to form a second cavity 36, and in this state, it is locked by the locking mechanism 21.

Next, as shown in FIG. 7, a stock solution 37' of foamed synthetic resin for forming the second foamed layer 37 is injected into the upper part of the first foamed layer 33, and the upper mold 13 is molded as shown in FIG. Then, the second foam layer 37 is formed. A multilayer foam 39 is formed by foaming and curing the second foam layer 37 .

In addition, in the above-mentioned embodiment, the case where the first and second molding surfaces 31 and 35 are formed on the upper mold body 16 has been explained, but it is also possible to further form the third and fourth molding surfaces, and in this case. It is clear that the upper mold body 16 may be formed into a polygonal shape.

[Effects of the invention] The above is the configuration of one embodiment of the foam molding mold for multilayer foam according to the present invention. According to this configuration,
Since the upper mold is formed from the upper mold frame body and the upper mold body, and the first and second molding surfaces are formed on the upper mold body, by rotating the upper mold body with respect to the upper mold frame body, It is possible to form a second cavity, which significantly improves work efficiency compared to the method in which the core mold is attached and removed, and there is no need to use two upper molds, which is highly economical and saves storage space. It is possible to obtain a foam molding mold for a multilayer foam that does not have the risk of increasing the amount of water or worsening the working environment.

[Brief explanation of drawings]

1 to 5 schematically show an embodiment of a foam molding mold for a multilayer foam according to the present invention, in which FIG. 1 is an explanatory sectional view, FIG. 2 is an explanatory side sectional view, and Figure 3 is an explanatory plan view, Figure 4 is an exploded perspective view,
Figure 5 is an enlarged explanatory diagram of the lock mechanism, Figures 6 and 7
8 and 8 are cross-sectional explanatory diagrams showing the state in which a multilayer foam is molded using the foam mold according to the present invention, and FIGS. 9 and 10 are cross-sectional explanatory diagrams of a conventional foam mold. . In the figure, 11...foaming mold, 12...lower mold, 1
3... Upper mold, 14... Upper mold frame body, 15... Rotating hinge, 16... Upper mold body, 21... Lock mechanism,
22... Fixed bracket, 23... Lock pin,
31...First molding surface, 32...First cavity, 33...First foam layer, 35...Second molding surface, 36...Second cavity, 37...Second foaming Layer, 39...Multilayer foam.

Claims (1)

[Scope of utility model registration request] In a foam molding mold that includes a lower mold and an upper mold that is matched to the lower mold, and foams a foam by injecting a stock solution of a foamed synthetic resin into the lower mold, the upper mold has an upper mold frame body. an upper mold main body rotatably attached within the frame of the upper mold frame via a rotation hinge; and a lock mechanism for regulating rotation of the upper mold frame and the upper mold main body; The mold body is formed with first and second molding surfaces, and the first molding surface can mold a first foam layer, and the second molding surface can mold a second foam layer, respectively. A foam mold for multi-layered foam.