JP2014091289A - Foamed molded product and method for producing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To mainly improve sealing property of a terminal part.SOLUTION: At least one of seal parts S1 and S2 for preventing projection of a foamed layer 3 is provided between a terminal part of a skin material 4 and a terminal part of a core material 2. A gas duct 101 capable of storing gas generated in molding the foamed layer 3 is provided inside the seal parts S1 and S2 or between a plurality of seal parts S1 and S2.

Description

  The present invention relates to a foam molded article that can improve the sealing performance of a terminal portion and a method for manufacturing the same.

  Vehicles such as automobiles are provided with a vehicle interior front panel 1 called an instrument panel or dashboard as shown in FIG. 17 at the front of the vehicle interior.

  As shown in FIG. 18, such a vehicle interior front panel 1 includes a multi-layer foam molded product integrally including a core material 2, a foam layer 3, and a skin material 4. (For example, refer to Patent Document 1).

  Here, the core material 2 is made of a hard and thick resin, the foam layer 3 is made of a foam material such as urethane foam, and the skin material 4 is made of a soft and thin resin.

  As shown in FIG. 19, the interior front panel 1 having such a multilayer structure has a foam layer 3 between a core material 2 and a skin material 4 set in a foam molding die 5 of a foam molding apparatus. It is manufactured by injecting a foaming liquid 6 as a raw material and foaming the foaming liquid 6 inside the foaming mold 5.

  At this time, the foamed male mold 7 and the foamed material 7 are formed so that the core material 2 having a hard thickness and high shape retaining property is on the upper side, and the skin material 4 having a soft thin wall and having no shape retaining property or low shape retaining property is on the lower side. Each is set in a female mold 8.

  The core material 2 and the skin material 4 described above are fitted with the position restricting portions 13 and 14 with respect to the position restricting portions 11 and 12 formed on the foam molding die 5 at the time of foam molding. Therefore, the position is regulated.

  In the above-described foamed molded product, it is necessary to seal the leakage of the foamed liquid 6 and the like so that the foamed layer 3 does not stick out from the end portions of the core material 2 and the skin material 4. However, since it is difficult to completely seal the leakage of the foaming liquid 6 or the like, conventionally, the core material 2 and the skin material 4 are formed to be slightly larger than the outer shape of the product, and in the subsequent process after foam molding. The outer part of the foam molded product is cut off and removed from the outer part of the product to adjust the outer shape of the product.

Japanese Patent Laid-Open No. 06-34438

  However, since it is wasteful to make the foam molded product larger than the outer shape of the product, the foam molded product is formed to the same size as the product, and there are no parts to be cut or removed, or fewer parts to be cut and removed. It is hoped that.

  However, in order to be able to foam-mold the foam-molded product to the size of the product itself, the above-mentioned sealing problem is sufficiently solved so that the appearance defect or the like due to the foaming of the foamed layer 3 does not occur. There is a need.

  And in above-mentioned patent document 1, the gas vent groove which can discharge | emit the gas which generate | occur | produces at the time of shaping | molding a foaming layer between the inside and outside of the above-mentioned seal is provided, and it seems to prevent malfunctions, such as generation | occurrence | production of the space | gap part by gas. I have to.

  However, since the gas vent groove of Patent Document 1 described above is relatively large and directly communicated with the outside, the foaming liquid that is the raw material of the foam layer, Since it was not possible to prevent the foamed fluid from flowing out with the gas directly to the outside, the gas vent groove was one of the causes of the appearance defect due to the sticking out of the foam layer 3 on the contrary. It was.

In order to solve the above-mentioned problem, the invention described in claim 1 is the foam molded product in which the core material and the skin material are integrated by the foamed layer, the terminal portion of the skin material, the terminal portion of the core material, In addition, at least one seal portion for preventing the foam layer from sticking out is provided, and gas generated when the foam layer is molded can be accommodated in the seal portion or between the plurality of seal portions. It is characterized by providing a gas duct.
In the invention described in claim 2, in the above, the foaming liquid that is a raw material of the foaming layer, communicating with the gas duct to the terminal portion of the core material, passing the gas generated when forming the foaming layer, A gas passage having such a size that the foamed liquid is foamed and does not pass through the foamed fluid before the foamed layer is solidified is provided.
According to a third aspect of the present invention, in the above, a plurality of the gas passages are provided at intervals, and the gas duct is a communication space extending so as to connect the plurality of gas passages. Features.
The invention described in claim 4 is characterized in that, in the above, an external communication hole capable of communicating with the outside is connected to the gas duct.
In the invention described in claim 5, the core material and the skin material are formed into the foam layer by injecting a foaming liquid as a raw material of the foam layer between the core material and the skin material set in the foaming mold. In the method for producing a foam molded product integrated by the above method, at least one seal portion is provided between the end portion of the skin material and the end portion of the core material, and the foam layer is removed. While preventing, the gas duct provided in the inside of this seal part or between several seal parts is made to accommodate the gas generate | occur | produced when a foaming layer is shape | molded.

According to the first aspect of the present invention, the following operational effects can be obtained by the above configuration. That is, it is possible to prevent the foam layer from sticking out by at least one seal portion provided between the end portion of the skin material and the end portion of the core material.
The gas generated when the foamed layer is formed can be accommodated by the gas duct provided inside the seal portion or between the plurality of seal portions. Thereby, problems, such as generation | occurrence | production of the space | gap part by gas, can be prevented.
Furthermore, when a gas duct is provided inside the seal part or between a plurality of seal parts, if a foaming liquid that is a raw material of the foam layer or a foamy fluid formed by foaming this foaming liquid flows into the gas duct Even so, it is possible to prevent the foaming liquid and the foamy fluid from leaking to the outside immediately.
As a result, it is possible to prevent the foamed layer from sticking out, improve the appearance quality of the terminal portion of the obtained foamed molded product, and use the foamed molded product as it is.
According to the second aspect of the present invention, the following effects can be obtained by the above configuration. That is, by providing a gas passage communicating with the gas duct at the end portion of the core material, a path for allowing the gas to escape to the gas duct can be secured.
In addition, by making the gas passage have a size that allows gas to pass but does not pass the foam fluid, the foam fluid can be prevented from leaking outside through the gas passage.
According to the third aspect of the present invention, the following operational effects can be obtained by the above configuration. That is, a plurality of gas passages are provided at an interval, and the gas duct is a communication space extending so as to connect the plurality of gas passages, so that the gas passages are accumulated in each part between the core material and the skin material. It is possible to collect the collected gas in one gas duct that is a communication space through a plurality of gas passages. Thereby, gas can be efficiently released to the gas duct.
According to the invention described in claim 4, the following effects can be obtained by the above-described configuration. That is, by connecting an external communication hole that can communicate with the outside to the gas duct, the gas accumulated in the gas duct can be efficiently discharged to the outside through the external communication hole.
According to the fifth aspect of the present invention, the following effects can be obtained by the above configuration. That is, at least one seal portion is provided between the end portion of the skin material and the end portion of the core material to prevent the foam layer from sticking out, and the inside of the seal portion or between the plurality of seal portions. By accommodating the gas generated when the foamed layer is formed in the gas duct provided, the same effect as that of the first aspect can be obtained.

It is a partial expanded longitudinal cross-sectional view which shows the seal structure of the terminal part of the foaming molded product concerning Example 1 of this invention (mold open state). FIG. 2 is an operation diagram of FIG. 1 (clamping state). FIG. 3 is an operation diagram following FIG. 2 (foaming state). FIG. 4 is an operation diagram following FIG. 3 (foaming end state). It is a whole top view of a core material. It is the elements on larger scale of the corner part of FIG. It is an enlarged view (mold open state) of the terminal part of the foaming molded product concerning Example 2 of this invention. It is an enlarged view of the part which shows the mold clamping state of FIG. It is a top view of a core material. It is an enlarged view of the corner part of FIG. It is a partial expanded longitudinal cross-sectional view of the terminal part of the foaming molded product concerning Example 3 of this invention (mold open state). FIG. 12 is a partially enlarged longitudinal sectional view of the mold closed state of FIG. 11. It is a top view of the core material of FIG. It is a partial expanded longitudinal cross-sectional view which shows the seal structure of the terminal part of the foaming molded product concerning Example 4 of this invention (mold open state). FIG. 15 is a partially enlarged longitudinal sectional view showing the mold clamping state of FIG. 14. It is a top view of the core material of FIG. It is a perspective view of a vehicle interior front panel. It is a longitudinal cross-sectional view of FIG. It is a figure which shows the foaming shaping | molding die which shape | molds the compartment front interior panel of FIG. 17 (mold open state).

Hereinafter, the present embodiment will be described in detail with reference to the drawings.
FIGS. 1-16 shows the Example of this embodiment and its modification. For convenience of drawing, a part of the foam molding die 5 may be omitted.

  <Configuration> The configuration of this embodiment will be described below.

  Vehicles such as automobiles are provided with a vehicle interior front panel 1 called an instrument panel or dashboard as shown in FIG. 17 at the front of the vehicle interior.

  As shown in FIG. 18, such a passenger compartment front interior panel 1 is constituted by a foam molded product having a multilayer structure integrally including a core material 2, a foam layer 3 and a skin material 4.

  As shown in FIG. 19, the interior front panel 1 having such a multilayer structure is provided between the core material 2 and the skin material 4 (foam molding space) set in the foam molding die 5 of the foam molding apparatus. The foaming liquid 6 as a raw material for the foaming layer 3 is injected as described later, and the foaming liquid 6 is foamed inside the foaming mold 5.

  The foam molding die 5 has a foam male mold 7 and a foam female mold 8. In this case, the core material 2 is the foam male mold 7, and the skin material 4 is the foam female mold 8. To be set.

  At this time, the foamed male mold 7 and the foamed material 7 are formed so that the core material 2 having a hard thickness and high shape retaining property is on the upper side, and the skin material 4 having a soft thin wall and having no shape retaining property or low shape retaining property is on the lower side. Each is set in a female mold 8.

The core material 2 and the skin material 4 described above are fitted with the position restricting portions 13 and 14 with respect to the position restricting portions 11 and 12 formed on the foam molding die 5 at the time of foam molding. Therefore, the position is regulated.
The above description is almost the same as that of the conventional example described above.

(Supplementary explanation)
Here, the above-mentioned “core material 2” is made of a hard and thick resin. The core material 2 is formed so as to have a substantially uniform thickness as a whole except for exceptional portions.
The above-mentioned “skin material 4” is composed of a soft thin resin. The skin material 4 is formed so as to have a substantially uniform wall thickness as a whole except for exceptional portions.
The skin material 4 is generally manufactured by powder slush molding or vacuum molding.
The above-described powder slush molding is basically performed by melting and adhering resin powder to a heated mold, and the above-described vacuum molding is, in short, vacuum-heating a heat-softened thermoplastic resin sheet. Then, the thermoplastic resin sheet is shaped by being brought into close contact with the vacuum forming die. Powder slush molding and vacuum molding are suitable for producing a skin material 4 having a uniform thickness.
In addition, the skin material 4 is being manufactured by injection molding. The injection molding is suitable for manufacturing the skin material 4 having portions with different thicknesses, the skin material 4 having a complicated shape, and the like. However, although the injection molding itself is general, the skin material 4 is soft and thin (and has a large area), so it is difficult to manufacture by injection molding, and much more than ordinary injection molding. Advanced technology is required.

  The above-mentioned “foam layer 3” is made of a foam material such as urethane foam. The foam layer 3 is interposed between the core material 2 and the skin material 4, and integrates the core material 2 and the skin material 4. The foam layer 3 is formed so as to have a substantially uniform wall thickness as a whole except for exceptional portions.

  The “foaming liquid 6” described above is, for example, a liquid resin material mixed with a foaming agent. For the foaming liquid 6, for example, liquid urethane is used. For example, when the expansion ratio of the foam layer 3 is 5 times, the injection amount of the foam liquid 6 is set to 1/5 of the volume of the foam molding space. When the foaming liquid 6 foams, gas is generated, and the foaming liquid 6 is foamed by this gas to form a foam fluid (for example, an unsolidified foam such as viscous urethane). The foamed fluid is then cured by crosslinking to form the foam layer 3.

  The present invention relates to a foam molded product that can be applied to a foam molded product such as the interior interior panel 1 described above and a manufacturing method thereof. However, the application target of the foam molded product is not limited to the interior front panel 1 of the passenger compartment.

  First, a foam molded product in which the core material 2 and the skin material 4 are integrated by the foam layer 3 (not shown) will be described.

(Configuration 1)
As shown in FIGS. 1 to 4 (mainly refer to FIG. 4), a seal portion for preventing the foamed layer 3 from sticking between the end portion of the skin material 4 and the end portion of the core material 2. At least one of S1 and S2 is provided.
A gas duct 101 capable of accommodating a gas generated when the foamed layer 3 is formed is provided inside the seal portions S1 and S2 or between the plurality of seal portions S1 and S2.

(Supplementary explanation 1)
Here, the above-mentioned “gas duct 101” is for accommodating or releasing the gas generated by the foaming liquid 6 foaming, the air confined in the foaming mold 5 or the like.

  Such a gas duct 101 can be formed by creating a closed space between the end portion of the core material 2 and the end portion of the skin material 4.

(Configuration 2)
In the above, the gas generated when the foamed layer 3 is formed is passed through the gas duct 101 to the end portion of the core material 2, and the foamed liquid used as the raw material of the foamed layer 3 or the foamed liquid is foamed. The gas passage 102 having a size (before the foamed layer 3 is solidified) that does not allow the foam fluid to pass therethrough is provided.

(Supplementary explanation 2)
Here, the gas passage 102 communicates between the core material 2 and the skin material 4 (foam molding space) and the gas duct 101. The gas passage 102 may be a (fine) groove or a (fine) hole.
The size (groove width and groove depth or diameter) of the gas passage 102 varies depending on various conditions such as the volume and shape of the foam molding space, the type of foaming liquid 6 used, the foaming ratio, and the molding temperature. Therefore, it cannot be generally stated, but it can be set optimally by trial and error.

  In the case of this embodiment, when the gas passage 102 has a diameter (or groove depth) of 0.3 mm, the foamed liquid 6 or a foamed fluid formed by foaming the foamed liquid 6 (for example, viscous urethane) It has been confirmed by various experiments that leakage of non-solidified foams such as, etc., can be eliminated if the leakage is smaller than that.

  Further, if the gas passage 102 is made too small in order to prevent leakage of the foaming liquid 6 and the foamed fluid, gas or air trapped in the foaming mold 5 may not be sufficiently released. confirmed.

  Therefore, it was confirmed that the size of the gas passage 102 may be practically set within a range of 0.05 mm to 0.25 mm in diameter and suitable for the molding conditions.

(Configuration 3)
In the above, a plurality of the gas passages 102 are provided at intervals, and the gas duct 101 is a communication space extending so as to connect the plurality of gas passages 102.

(Supplementary explanation 3)
In this case, the gas duct 101 is preferably formed in the circumferential direction along the end portion of the core material 2. The gas passage 102 is provided with a required interval with respect to the gas duct 101.

  (Configuration 4)

  In the above, an external communication hole 103 capable of communicating with the outside is connected to the gas duct 101.

(Supplementary explanation 4)
In this case, one or a plurality of external communication holes 103 are provided for each important point such as a corner portion of the core member 2 or an intermediate portion of the side portion.

  Next, the manufacturing method of a foam molded product is demonstrated.

(Configuration 5)
By injecting a foaming liquid 6 as a raw material of the foam layer 3 between the core material 2 set in the foaming mold 5 and the skin material 4, the core material 2 and the skin material 4 are integrated by the foam layer 3. The above-described foamed molded product is manufactured.
At this time, at least one seal portion S1, S2 is provided between the end portion of the skin material 4 and the end portion of the core material 2 to prevent the foamed layer 3 from sticking, and the seal portions S1, S2 The gas generated in molding the foamed layer 3 is accommodated in the gas duct 101 provided inside or between the plurality of seal portions S1, S2.

  <Operation> The operation of this embodiment will be described below.

  As shown in FIG. 19, the interior front panel 1 of the multi-layer structure has the foamed male mold 7 and the foamed female mold 8 in the foamed mold 5 of the foam-molding apparatus opened (mold-opened state). The core material 2 is set on the foamed male mold 7 and the skin material 4 is set on the foamed female mold 8 (core material / skin material setting step).

  At this time, the foamed male mold 7 and the foamed material 7 are formed so that the core material 2 having a hard thickness and high shape retaining property is on the upper side, and the skin material 4 having a soft thin wall and having no shape retaining property or low shape retaining property is on the lower side. Each is set in a female mold 8.

  Next, a foaming liquid 6 as a raw material for the foam layer 3 is injected between the core material 2 and the skin material 4 set in the foaming mold 5 to form the foaming male mold 7 and the foaming female mold 8. Tighten (clamping process). The injection of the foaming liquid 6 may be performed from the injection port provided in the foaming mold 5 after the foaming mold 5 is clamped.

  Then, the foamed liquid 6 is foamed within the mold-molded foaming mold 5 to form the foamed layer 3 between the core material 2 and the skin material 4 (foaming step).

  At this time, in the foaming mold 5, first, the foaming liquid 6 spreads into the mold by its own weight, and when the foaming liquid 6 has spread to some extent, gas is generated from the foaming liquid 6 and foaming is started. The above-described gas tends to spread inside the foaming mold 5, and a foam fluid (for example, an unsolidified foam such as viscous urethane) in which the foaming liquid 6 is foamed by the gas follows the gas. Thus, the inside of the foaming mold 5 is tried to spread to the end.

  Then, by holding the above-described mold clamping state for a predetermined time, when the foamed fluid that reaches the end inside the foaming mold 5 is solidified, a foamed molded product is obtained. The mold 5 is opened to take out the foam molded product molded from the foam molding die 5 (mold opening process and foam molded product take-out process).

  After that, the product is completed by cutting away portions of the foamed molded product that are not necessary for the product in a later step. In this case, the parts that are not necessary for the product are parts that are inside the opening formed in the product.

  <Effect> According to this embodiment, the following effects can be obtained.

(Operation effect 1)
The foam layer 3 can be prevented from sticking out by at least one seal portion S1, S2 provided between the end portion of the skin material 4 and the end portion of the core material 2.
A gas duct for generating gas (or air trapped in the foaming mold 5) generated when the foamed layer 3 is molded by the gas duct 101 provided in the seal portions S1 and S2 or between the plurality of seal portions S1 and S2. 101. As a result, it is possible to prevent problems such as the occurrence of voids due to gas (or air) remaining in the foaming mold 5.
Further, by providing the gas duct 101 inside the seal portions S1 and S2 or between the plurality of seal portions S1 and S2, it is assumed that the foam liquid 6 serving as a raw material of the foam layer 3 and the foam liquid 6 are foamed in the gas duct 101. Even when the foamed fluid formed as described above flows in, it is possible to prevent the foamed liquid 6 and the foamed fluid from leaking immediately to the outside.
As a result, it is possible to prevent the foamed layer 3 from sticking out, improve the appearance quality of the terminal portion of the obtained foamed molded product, and use the foamed molded product as it is.

(Operation effect 2)
By providing the gas passage 102 communicating with the gas duct 101 at the end portion of the core material 2, a path for allowing the gas to escape to the gas duct 101 can be secured.
In addition, by making the gas passage 102 have a size that allows gas to pass therethrough and does not pass the foam fluid, the foam fluid can be prevented from leaking outside through the gas passage 102.

(Operation effect 3)
A plurality of gas passages 102 are provided at intervals, and the gas duct 101 is a communication space extending so as to connect between the plurality of gas passages 102, thereby providing a space between the core material 2 and the skin material 4. The gas accumulated in each part can be collected in one gas duct 101 which is a communication space via a plurality of gas passages 102. As a result, the gas can be efficiently released to the gas duct 101.

(Operation effect 4)
By connecting to the gas duct 101 the external communication hole 103 that can communicate with the outside, the gas accumulated in the gas duct 101 can be efficiently discharged to the outside through the external communication hole 103.

(Operation effect 5)
At least one seal portion S1, S2 is provided between the end portion of the skin material 4 and the end portion of the core material 2 to prevent the foam layer 3 from sticking, and the inside of the seal portions S1, S2 or By allowing the gas duct 101 provided between the plurality of seal portions S1 and S2 to contain the gas generated when the foamed layer 3 is molded, the same operational effect as the above-described (Effect 1) can be obtained. .

  Hereinafter, specific examples of the above will be described.

<Configuration> The configuration will be described below.
FIGS. 1-6 shows Example 1 and its modification.

(Configuration 1a)
As shown in FIG. 1 (to FIG. 4), an end wall 21 extending toward the terminal portion of the core material 2 is provided at the terminal portion of the skin material 4.
And the recessed part 22 for a seal | sticker dented to the back surface side of the core material 2 is provided in the terminal part of the core material 2. FIG.
Further, a seal insertion portion 24 that can be inserted with a gap 23 is provided at the tip of the end wall 21 with respect to the seal recess 22.
The inner wall seal portion 26 is pressed between the inner wall surface 25 of the sealing recess 22 and the tip end portion of the sealing insertion portion 24 by the foaming pressure when the foamed layer 3 is molded (see FIG. 4). Form.

(Supplementary explanation 1a)
Here, the above-mentioned “end wall 21” becomes an end face of the foam molded product and also an end face of the product. The end wall 21 is preferably formed in a bent shape so as to be perpendicular to the surfaces of the core material 2 and the skin material 4. However, the end wall 21 may be inclined with respect to the surfaces of the core material 2 and the skin material 4.

  In this case, the length of the end wall 21 is substantially the same as the thickness of the foam molded product, or is slightly shorter or slightly longer than that. The thickness (wall thickness) of the end wall 21 is substantially the same as the other part of the skin material 4. The end wall 21 extends continuously in the circumferential direction along the edge of the foam molded article. However, depending on the shape of the foam molded product, the end wall 21 may be discontinuous in the circumferential direction.

  The “sealing recess 22” described above includes the inner wall surface 25, the top surface 27, and the outer wall surface 28 described above. The sealing recess 22 is a circumferential groove or the like that continuously extends in the circumferential direction along the edge of the foam molded product. However, depending on the shape of the foam molded product, the sealing recess 22 may be discontinuous in the circumferential direction. The sealing recess 22 has a substantially constant thickness and is configured to have a concave shape on both the inner and outer surfaces.

  The “gap 23” described above is a marginal space with respect to the surface direction of the foam molded product. The gap 23 is at least relatively larger than the thickness of the end wall 21.

  The above-described “seal insertion portion 24” has substantially the same thickness as the skin material 4 and the end wall 21. The end wall 21 and the seal insertion portion 24 are continuous so as to be substantially J-shaped in a side view, that is, in a shape in which the seal insertion portion 24 is wound inside.

  The above-mentioned “foaming pressure” is mainly generated by gas or foam fluid (for example, unsolidified foam such as viscous urethane) generated from the foaming liquid 6 which is a raw material of the foam layer 3. .

  As shown in FIG. 4, the above-mentioned “inner wall seal portion 26” is literally a seal portion formed on the inner wall surface 25 side of the sealing recess 22. The inner wall seal portion 26 becomes the first seal portion S1.

(Configuration 1b)
The inner wall seal portion 26 is formed on at least a part of the inner wall surface 25 of the sealing recess 22, and the inner wall seal surface 31 is inclined downward inward and the sealing insertion portion 24. The inner wall side seal piece 32 that is bent so as to have an upward slope toward the horizontal or inward direction is provided at the distal end portion.
When the corner portion of the leading edge of the inner wall side sealing piece 32 abuts on the inner wall sealing surface 31 as shown in FIG. 2, the inner wall sealing piece 32 is moved inwardly along the inner wall sealing surface 31 as shown in FIG. It is assumed that it can be deformed to a downward slope toward (or deformed so as to be turned downward).

(Supplementary explanation 1b)
Here, the above-mentioned “inner wall sealing surface 31” is 30 ° to 30 ° with respect to the horizontal direction so that an effective component force can be generated in both the vertical direction and the horizontal direction in the figure. The inclined surface has an inclination angle 33 (see FIG. 4) of about 45 °. In this case, the inner wall sealing surface 31 is an inclined surface provided over substantially the entire area of the inner wall surface 25 of the sealing recess 22. The sealing recess 22 is such that the entire inner and outer surfaces of the inner wall surface 25 are inclined at the same angle as the inner wall sealing surface 31.
However, the inner wall sealing surface 31 may be provided only for a partial range on the top surface 27 side.

As shown in FIG. 2, the above-mentioned “inner wall side sealing piece 32” has its tip in contact with the intermediate portion of the inner wall sealing surface 31 when the sealing insertion portion 24 is inserted into the sealing concave portion 22. As shown, when the foaming pressure is applied and the sealing insertion portion 24 is completely pressed against the outer wall surface 28 and the top surface 27 of the sealing recess 22, the tip thereof is at least part of the inner wall sealing surface 31. It has a length that touches. As shown in FIG. 3, the angle of the inner wall side seal piece 32 is set so as to ensure that the inner wall side seal piece 32 is turned into the inwardly lowered state when the tip of the inner wall side seal piece 32 is rubbed by the inner wall seal surface 31. Or as shown in FIG. 2, it forms so that it may become any angle from the horizontal to the angle orthogonal to the inner-wall sealing surface 31. As shown in FIG.
In terms of structure, it is conceivable to form the inner wall side sealing piece 32 inwardly from the beginning. However, in this case, the sealing performance becomes unstable, so this is not adopted in this case.
The inner wall side seal piece 32 is formed to be slightly longer than the top surface 27, the tip of the inner wall side seal piece 32 is inserted into the sealing recess 22, and the corner of the tip edge is the inner wall seal surface 31. In the state where it is in contact with the intermediate portion, the tip end portion of the inner wall side seal piece 32 is held in a sandwiched state at least between the foamed female die 8 and the inner wall seal surface 31 or in each portion of the seal recess 22. Yes. In this state, the tip of the inner wall side seal piece 32 is supported by the corner of the tip edge of the inner wall side seal piece 32 pressing the inner wall seal surface 31 in a line contact state. This prevents the seal insertion portion 24 from easily falling down. Further, in the initial state in which the foaming pressure at the time of foam molding is applied, the corner portion of the leading edge of the inner wall side seal piece 32 and the inner wall seal surface 31 are in a line contact state, that is, a line seal is formed, and foaming proceeds. In the later stage of foaming in which the foam fluid is completely filled, the tip of the inner wall side seal piece 32 changes from the line contact state to the surface contact state due to the foaming pressure, and the surface is sealed.

(Configuration 1c)
In the above, as shown in FIG. 4, foaming is performed when the foaming layer 3 is formed between the outer wall surface 28 of the sealing recess 22 and the connecting portion of the sealing insertion portion 24 to the end wall 21. It is possible to form the outer wall seal portion 35 that is pressed by pressure.

(Supplementary explanation 1c)
Here, the above-described “outer wall seal portion 35” is literally a seal portion formed on the outer wall surface 28 side of the sealing recess 22. The outer wall seal portion 35 becomes the second seal portion S2.

(Configuration 1d)
The outer wall seal portion 35 is formed on at least a part of the outer wall surface 28 of the sealing recess 22, and the outer wall seal surface 36 is inclined inwardly upward and the sealing insertion portion 24. The outer wall side sealing piece 37 is formed at the connecting portion with respect to the end wall 21 so as to be bent in an upward gradient inward so as to rise at an angle that is the same as or slightly larger than the outer wall sealing surface 36. It is supposed to be.
The outer wall sealing surface 36 can be deformed inwardly along the outer wall sealing surface 36 when the outer wall sealing piece 37 comes into contact therewith.

(Supplementary explanation 1d)
Here, the above-mentioned “outer wall sealing surface 36” has an angle of 30 ° to the vertical direction in order to generate an effective component force in both the vertical direction and the horizontal direction in the figure. The inclined surface has an inclination angle 38 of about 45 °. In this case, the outer wall sealing surface 36 is a partial surface provided on a portion (tip portion) near the skin material 4 on the outer wall surface 28 of the sealing recess 22. As a result, the sealing concave portion 22 has a parallel shape in which the inner and outer surfaces of the outer wall surface portion 28 extend vertically toward the end portion of the skin material 4 as a whole, and the outer wall sealing surface 36 portion is partially formed. It has a tapered shape.
However, the outer wall sealing surface 36 may be an inclined surface provided over substantially the entire area of the outer wall surface 28.

  As shown in FIG. 2, the above-mentioned “outer wall side sealing piece 37” is slightly in contact with the outer wall sealing surface 36 in a state where the sealing insertion portion 24 is inserted into the sealing concave portion 22, or is slightly spaced. So that they are separated. In this case, the interval between the seal insertion portion 24 and the outer wall seal surface 36 is substantially the same as or smaller than the thickness of the seal insertion portion 24.

(Configuration 1e)
Further, the core material 2 may have a ridge wall portion 39 extending toward the skin material 4 at the edge of the inner wall surface 25 of the sealing recess 22.

(Supplementary explanation 1e)
Here, the above-described “projection wall portion 39” is a hanging wall extending downward from the inner end portion (lower end portion) of the inner wall surface 25. As shown by an arrow in FIG. 3, this ridge wall portion 39 temporarily stops part of the flow of gas or foam fluid (the upper part) formed by foaming of the foaming liquid 6, This is for controlling the flow rate, regulating the flow rate, and adjusting the flow direction. The projecting wall portion 39 has a tapered shape having a required punching slope on both surfaces (inner and outer surfaces). The protruding length of the ridge wall portion 39 is about 1/5 to 1/2 of the thickness of the foam layer 3 (the height of the foam molding space).

  Note that the front end 22a (lower end) of the outer wall surface 28 of the sealing recess 22 is positioned at substantially the same level as the back surface of the core material 2, and the front end (lower end) of the ridge wall 39 is The outer wall surface 28 is positioned closer to the skin material 4 than the front end (lower end).

(Configuration 1-1)
In addition, as shown in FIG. 4, a gas duct 101 is provided between the inner wall seal portion 26 and the outer wall seal portion 35 that can accommodate the gas generated when the foamed layer 3 is molded.

(Supplementary explanation 1-1)
In this case, the gas duct 101 is provided in a space formed by the sealing insertion portion 24 closing the corner portion between the outer wall surface 28 and the top surface 27 of the sealing recess 22.

  (Configuration 1-2) Further, the gas generated when the foamed layer 3 is formed through the gas duct 101 through the end portion of the core material 2, and the foamed liquid 6 serving as the raw material of the foamed layer 3, foamed A fine gas passage 102 having a size that does not pass through the foam fluid (before the foam layer 3 is solidified) formed by foaming the liquid 6 is provided.

(Supplementary explanation 1-2)
In this case, the gas passage 102 is formed between the top surface 27 and the inner wall surface 25 in the sealing recess 22.

  (Configuration 1-3) As shown in FIGS. 5 and 6, a plurality of the gas passages 102 described above are provided at intervals, and the gas duct 101 connects the plurality of gas passages 102. So that the communication space extends.

(Supplementary explanation 1-3)
In this case, the gas duct 101 is continuously extended in the circumferential direction along the inside of the sealing recess 22 provided in the terminal portion of the core member 2.

(Configuration 1-4) Further, an external communication hole 103 capable of communicating with the outside is connected to the gas duct 101.
In this case, the gas duct 101 is provided at a corner portion of the core material 2 or the like.

  Next, the manufacturing method of a foam molded product is demonstrated.

  (Configuration 1f)

By injecting a foaming liquid 6 as a raw material of the foam layer 3 between the core material 2 set in the foaming mold 5 and the skin material 4, the core material 2 and the skin material 4 are integrated by the foam layer 3. The above-described foamed molded product is manufactured.
At this time, an end wall 21 extending toward the end portion of the core material 2 is provided at the end portion of the skin material 4, and the sealing insertion portion 24 provided at the distal end portion of the end wall 21 is provided on the end portion of the core material 2. In a state of having a gap 23 with respect to the sealing recess 22 provided in the terminal portion,
The distal end portion of the seal insertion portion 24 is brought into pressure contact with the inner wall surface 25 of the seal recess 22 by the foaming pressure when the foam layer 3 is formed, and the skin material 4 is positioned at the position of the inner wall surface 25 of the seal recess 22. Sealing is performed between the terminal portion and the terminal portion of the core member 2.

  (Supplementary explanation 1f)

  The above-described sealing is performed in a mold clamping process described later.

(Configuration 1-5)
At this time, gas generated when the foamed layer 3 is molded is accommodated in the gas duct 101 provided in the seal portions S1 and S2 or between the seal portions S1 and S2.

  (Supplementary explanation 1-5)

  Degassing by the gas duct 101 described above is performed in a foaming process to be described later.

  <Effect> According to this embodiment, the following effects can be obtained.

(Operational effect 1a)
Since the sealing insertion portion 24 is accommodated in the sealing recess 22 with a gap 23, an excessive force is not applied when the sealing insertion portion 24 is inserted into the sealing recess 22. Therefore, it is possible to prevent the insertion failure of the seal insertion portion 24 from occurring or the skin material 4 from being wrinkled due to an excessive force at the time of insertion.

  Further, the inner wall seal portion 26 that is pressed by the foaming pressure at the time of molding the foamed layer 3 is formed between the inner wall surface 25 of the sealing concave portion 22 and the distal end portion of the sealing insertion portion 24, thereby providing a seal. Since it is possible to make a seal structure that effectively utilizes the deformation of the insertion portion 24 in the turning direction, it is possible to effectively prevent leakage of the foamed liquid 6 and the like caused by turning of the insertion portion 24 for sealing. become.

  Further, by adopting a seal structure that utilizes deformation in the turning direction of the seal insertion portion 24, the allowable range is widened even if the seal insertion portion 24 is uneven due to a manufacturing error of the skin material 4. Can do.

  Further, since the distal end portion of the sealing insertion portion 24 that seals with the inner wall surface 25 of the sealing concave portion 22 is a portion away from the connecting portion with the end wall 21 of the skin material 4, the skin material 4 It is possible to make it difficult to be influenced by the shape and rigidity of the end wall 21. Therefore, it is prevented that the tip portion of the sealing insertion portion 24 becomes difficult to follow the shape of the inner wall surface 25 of the sealing concave portion 22 due to the influence of the shape and rigidity of the end wall 21 of the skin material 4, It becomes possible to always ensure a certain sealing performance.

  As described above, the outside of the foam layer 3 due to leakage of the foaming liquid 6 around the end wall 21 of the product is eliminated, the quality around the end wall 21 is improved, and the foam molded product is the same as the product. It can be formed in a size.

(Operational effect 1b)
When the inner wall side seal piece 32 comes into contact with the inner wall seal surface 31, the inner wall side seal piece 32 is deformed to a downward gradient inward along the inner wall seal surface 31, thereby causing the inner wall seal surface 31 to be deformed. And the inner wall side sealing piece 32 can be securely adhered and sealed.

(Operational effect 1c)
Since the outer wall seal portion 35 is formed between the outer wall surface 28 of the seal recess 22 and the connecting portion of the seal insertion portion 24 to the end wall 21, the inner wall seal portion 26 and the outer wall seal portion 35 are connected to each other. Since a heavy seal structure is obtained, the sealing performance can be further improved. In this case, the inner wall seal portion 26 is a main seal and the outer wall seal portion 35 is a sub seal.

(Operational effect 1d)
When the outer wall side seal piece 37 comes into contact with the outer wall seal surface 36, the outer wall side seal piece 37 is deformed inward along the outer wall seal surface 36, whereby the outer wall seal surface 36 and the outer wall side It is possible to seal the seal piece 37 with close contact with certainty.

(Operation effect 1e)
Since the core material 2 has a ridge wall portion 39 extending toward the skin material 4 at the edge of the inner wall surface 25 of the sealing recess 22, the foam liquid 6 (for example, liquid state) serving as the raw material of the foam layer 3 is provided. (E.g. urethane) foaming gas or foam fluid (for example, non-solid foam such as viscous urethane) temporarily stops part of the flow to control the flow rate or regulate the flow rate. Or by adjusting the flow direction, these can be gently guided toward the thickness direction of the foam molded product. As a result, the gas or the foam-like fluid comes into pressure contact with the inner wall surface 25 or the outer wall surface 28 of the concave portion 22 for sealing in an optimal state. It can be secured.

(Operational effect 1-1)
The foam layer 3 can be prevented from sticking out by at least one seal portion S1, S2 provided between the end portion of the skin material 4 and the end portion of the core material 2.
A gas duct for generating gas (or air trapped in the foaming mold 5) generated when the foamed layer 3 is molded by the gas duct 101 provided in the seal portions S1 and S2 or between the plurality of seal portions S1 and S2. 101. As a result, it is possible to prevent problems such as the occurrence of voids due to gas (or air) remaining in the foaming mold 5.
Further, by providing the gas duct 101 inside the seal portions S1 and S2 or between the plurality of seal portions S1 and S2, it is assumed that the foam liquid 6 serving as a raw material of the foam layer 3 and the foam liquid 6 are foamed in the gas duct 101. Even when the foamed fluid formed as described above flows in, it is possible to prevent the foamed liquid 6 and the foamed fluid from leaking immediately to the outside.
As a result, it is possible to prevent the foamed layer 3 from sticking out, improve the appearance quality of the terminal portion of the obtained foamed molded product, and use the foamed molded product as it is.

(Effect 1-2) By providing the gas passage 102 communicating with the gas duct 101 at the end portion of the core material 2, a path for allowing the gas to escape to the gas duct 101 can be secured.
Further, the gas passage 102 has a size that allows gas to pass but does not allow the foam 6 or foam fluid to pass through, so that the foam 6 or foam fluid leaks to the outside through the gas passage 102. Can not be.

  (Operation 1-3) A plurality of gas passages 102 are provided at intervals, and the gas duct 101 is a communication space extending so as to connect the plurality of gas passages 102. It is possible to collect the gas accumulated in each part between the skin material 4 and the gas duct 101 in one place which becomes a communication space via the plurality of gas passages 102. As a result, the gas can be efficiently released to the gas duct 101.

  (Effect 1-4) By connecting the external communication hole 103 which can be communicated to the outside to the gas duct 101, the gas accumulated in the gas duct 101 is efficiently discharged to the outside through the external communication hole 103. Is possible.

(Operation effect 1f)
The distal end portion of the seal insertion portion 24 is brought into pressure contact with the inner wall surface 25 of the seal recess 22 by the foaming pressure when the foam layer 3 is formed, and the skin material 4 is positioned at the position of the inner wall surface 25 of the seal recess 22. By performing sealing between the terminal portion and the terminal portion of the core member 2, the same effect as the effect 1a can be obtained.

(Effect 1-5)
By allowing the gas duct 101 provided in the seal portions S1 and S2 or between the plurality of seal portions S1 and S2 to contain the gas generated when the foamed layer 3 is molded, the operational effect 1-1. The same effect can be obtained.

  7-10 shows Example 2 and its modification.

  <Configuration> The configuration will be described below.

  First, the structure of the foam molded product in which the core material 2 and the skin material 4 are integrated by the foam layer 3 (not shown) will be described.

(Configuration 2a)
As shown in FIG. 7 (see also FIG. 8), an end wall 41 extending toward the terminal portion of the core material 2 is provided at the terminal portion of the skin material 4.
In addition, a sealing recess 42 that is recessed toward the back side of the core material 2 is provided at the end portion of the core material 2, and a gap 43 is provided at the tip of the end wall 41 with respect to the sealing recess 42. A seal insertion portion 44 that can be inserted is provided.
Then, the forcible fitting that allows the outer surface of the sealing insertion portion 44 to be pressed against the outer wall surface 45 of the sealing concave portion 42 by being forcedly fitted into the gap 43 on the inner surface side of the sealing insertion portion 44. A combined overhang 46 is provided.
Then, as shown in FIG. 9 (see also FIG. 10), a plurality of forcibly fitting overhang portions 46 are provided with an interval in the extending direction of the sealing recess 42.

(Supplementary explanation 2a)
Here, the above-mentioned “end wall 41” is formed integrally with the skin material 4 and serves as an end face of the foam molded product as well as an end face of the product. The end wall 41 is preferably formed in a bent shape so as to be perpendicular to the surfaces of the core material 2 and the skin material 4. However, the end wall 41 may be inclined with respect to the surfaces of the core material 2 and the skin material 4.

  In this case, the length of the end wall 41 is substantially the same as the thickness of the foam molded product, or is slightly shorter or slightly longer than that. The end wall 41 extends continuously in the circumferential direction along the edge of the foam molded product. However, depending on the shape of the foam molded product, the end wall 41 may be discontinuous in the circumferential direction.

  The “sealing recess 42” described above is formed integrally with the core member 2 and has the outer wall surface 45, the top surface 47, and the inner wall surface 48 described above. The sealing recess 42 is a circumferential groove that continuously extends in the circumferential direction along the edge of the foam molded product. However, depending on the shape of the foam molded product, the sealing recess 42 may be discontinuous in the circumferential direction. The sealing recess 42 has a substantially constant thickness and is configured to have a concave shape on both the inner and outer surfaces.

  The “gap 43” described above is a marginal space with respect to the surface direction of the foam molded product. The gap 43 is at least sufficiently wide with respect to the thickness of the end wall 41. In this case, the gap 43 has a size approximately the same as the thickness of the end wall 41.

  The above-described “seal insertion portion 44” is an extension formed integrally with the distal end portion of the end wall 41. The seal insertion portion 44 has substantially the same length as the depth of the seal recess 42.

And the outer surface of the insertion part 44 for a seal | sticker is used as the seal surface which inclines inward toward the inward. On the other hand, the outer wall surface 45 of the sealing recess 42 is also a sealing surface that is inclined inward (inclined) in an upward gradient. An outer wall side forced sealing portion (see seal portions S1, S2 and FIG. 8) is formed between the outer surface of the sealing insertion portion 44 and the outer wall surface 45 of the sealing concave portion.
Here, the outer surface of the seal insertion portion 44 and the outer wall surface 45 of the seal recess 42 can generate effective component forces in both the vertical direction and the horizontal direction in the figure. It has an inclination angle 49 of about 30 ° to 45 ° with respect to the vertical direction.

  The top of the seal insertion portion 44 is a narrow horizontal surface, and the top surface 47 of the seal recess 42 is substantially the same as or slightly wider than the top of the seal insertion portion 44. .

  And at least a part (the back side portion) of the inner wall surface 48 of the sealing recess 42 on the top surface 47 side is an inclined surface (back side inclined surface) that inclines in a downward gradient inward. This back side inclined surface has an inclination angle of about 30 ° to 45 ° with respect to the vertical direction.

  Further, the above-described “forced fitting overhanging portion 46” is integrally formed on the inner surface side of the sealing insertion portion 44. Further, the forced fitting overhanging portion 46 may be formed integrally with the inner surface side of the end wall 41. In this case, the forced fitting overhanging portion 46 is substantially wedge-shaped and extends so as to expand inward from the top of the sealing insertion portion 44 toward the inner surface of the skin material 4. The forced fitting overhanging portion 46 is started from a position slightly lower than the top of the sealing insertion portion 44.

(2a1) Furthermore, the core material 2 may have a ridge wall portion 39 extending toward the skin material 4 at the edge of the inner wall surface 48 of the sealing recess 42.
Since this “projection wall portion 39” is the same as that of the first embodiment, a part of the description is omitted.

  The portion of the inner wall 48 of the sealing recess 42 on the ridge wall portion 39 side has an inclination having an intermediate inclination angle between the inclination angle of the above-mentioned inclined surface and the die-cutting gradient of the ridge wall portion 39. It is a surface (front side inclined surface). And these (the back side inclined surface and the near side inclined surface of the inner wall surface 48, and the ridge wall portion 39) are composed of a composite inclined surface in which a plurality of (three in this case) inclined surfaces are connected as a whole. Has been.

  And the edge part inside the above-mentioned forced fitting overhang | projection part 46 shall have the composite shape match | combined with the above-mentioned composite inclined surface. In this case, the inner edge of the forced fitting overhanging portion 46 is substantially the same as the tip side inclined portion substantially parallel to the back side inclined surface, the curved portion in contact with the near side inclined surface, and the ridge wall portion 39. It has a parallel back side inclined part.

  In this case, the forced fitting overhanging portion 46 is guided outward by following at least one of the front inclined surface and the protruding wall portion 39. The forcibly fitting overhanging portion 46 may be guided outward along the rear inclined surface.

(Configuration 2b)
The end wall 41 is configured to be thicker than other portions of the skin material 4 (thick end wall).

(Supplementary explanation 2b)
Here, the above-described “skin material 4” is configured to have substantially the same thickness except for exceptional portions. The above-mentioned “end wall 41” is formed to a thickness of about 2 to 4 times the general thickness of the skin material 4.

(Configuration 2-1)
A gas duct 101 that can accommodate a gas generated when the foamed layer 3 is molded may be provided between the outer wall surface 45 of the sealing recess 42 and the sealing insertion portion 44.

(Supplementary explanation 2-1)
The gas duct 101 is provided inside the outer wall side forced sealing portion (seal portions S1, S2). In this case, the gas duct 101 is provided in a space formed by closing the step provided in the middle of the outer wall surface 45 of the sealing recess 42 with the outer surface of the sealing insertion portion 44.

  Alternatively, the gas duct 101 can be provided by forming a step portion (not shown) on the outer surface of the sealing insertion portion 44.

  And the outer wall side forced seal part is divided | segmented into the two-stage seal part S1, S2 by these step parts (gas duct 101).

(Configuration 2-2)
Further, the gas generated when the foamed layer 3 is molded is passed through the end portion of the core material 2 through the gas duct 101, and the foamed liquid 6 as the raw material of the foamed layer 3 and the foamed liquid 6 are foamed. A fine gas passage 102 sized so as not to pass the foamed fluid (before the foamed layer 3 is solidified) is provided.

  (Supplementary explanation 2-2)

  In this case, the gas passage 102 is formed between a portion on the back side of the outer wall surface 45 in the sealing recess 42, a top surface 47, and at least a portion on the back side of the inner wall surface 48. The gas passage 102 may be a (fine) groove or a (fine) hole.

(Configuration 2-3)
As shown in FIGS. 9 and 10, a plurality of the gas passages 102 described above are provided at intervals, and the gas duct 101 extends so as to connect the plurality of gas passages 102. It is preferable to do so.

(Supplementary explanation 2-3)
In this case, the gas duct 101 extends continuously in the circumferential direction along the outer wall surface 45 of the sealing recess 42 provided at the end portion of the core member 2.
Further, the gas passage 102 is provided at a position avoiding the above-described forced fitting overhanging portion 46.

(Configuration 2-4)
Further, an external communication hole 103 that can communicate with the outside is connected to the gas duct 101.

  (Supplementary explanation 2-4)

  In this case, one or a plurality of external communication holes 103 are provided for each important point such as a corner portion of the core member 2 or an intermediate portion of the side portion.

  Next, the manufacturing method of a foam molded product is demonstrated.

(Configuration 2c)
By injecting a foaming liquid 6 as a raw material of the foam layer 3 between the core material 2 set in the foaming mold 5 and the skin material 4, the core material 2 and the skin material 4 are integrated by the foam layer 3. To produce a foamed molded product.
At this time, an end wall 41 extending toward the end portion of the core material 2 is provided at the end portion of the skin material 4, and the sealing insertion portion 44 provided at the distal end portion of the end wall 41 is replaced with the core material 2. A gap 43 is fitted to a sealing recess 42 provided in the terminal portion of the first end portion.
At the same time, a plurality of forced fitting overhanging portions 46 provided on the inner surface side of the sealing insertion portion 44 with a gap in the extending direction of the sealing concave portion 42 are forcibly fitted into the gap 43. Thus, the outer surface of the sealing insertion portion 44 is brought into pressure contact with the outer wall surface 45 of the sealing concave portion 42 so that sealing is performed between the end portion of the skin material 4 and the end portion of the core material 2.

(Supplementary explanation 2c)
The above-described sealing is performed in a mold clamping process described later.

(Configuration 2-5)
Further, the gas generated in molding the foamed layer 3 is accommodated in the gas duct 101 provided between the outer wall surface 45 of the sealing recess 42 and the sealing insertion portion 44.

(Supplementary explanation 2-5)
Degassing by the gas duct 101 described above is performed in a foaming process to be described later.

  <Effect> According to this embodiment, the following effects can be obtained.

(Operational effect 2a)
On the inner surface side of the seal insertion portion 44, there is provided a forced fitting overhang portion 46 capable of pressing the outer surface of the seal insertion portion 44 against the outer wall surface 45 of the seal concave portion 42. 46 is provided with an interval in the extending direction of the sealing recess 42, the sealing insertion portion 44 is forcedly fitted in some places in the extending direction of the sealing recess 42. Therefore, the sealing concave portion 42 can be applied to the sealing concave portion 42 as compared with the case where the sealing insertion portion 44 is forcibly fitted over the entire area. On the other hand, the sealing insertion portion 44 can be easily fitted.

  Further, since the force acting on the skin material 4 and the end wall 41 is weakened as a whole at the time of fitting, for example, a fitting failure occurs or wrinkles approach the skin material 4 due to excessive force being applied. And other problems can be reduced. In addition, since the balance between the fitting force and the sealing performance can be optimized, the necessary sealing performance can be ensured.

  (2a1) Since the core material 2 has the ridge wall part 39 extended toward the skin material 4 side at the edge part of the inner wall surface 48 of the concave part 42 for sealing, the foaming liquid 6 ( For example, a part of the flow of gas or foamed fluid (for example, non-solidified foam such as viscous urethane) formed by foaming liquid urethane, etc. is temporarily stopped to reduce the flow rate or flow rate. These can be gently guided toward the thickness direction of the foam molded product by regulating the flow rate or adjusting the flow direction. As a result, the gas or foamy fluid presses the sealing insertion portion 44 against the inner wall surface 48 or the outer wall surface 45 of the sealing concave portion 42 in an optimum state, so that sufficient sealing performance is ensured. It becomes possible to do.

(Operation effect 2b)
Since the end wall 41 is configured to be thicker than the other parts of the skin material 4, the shape retaining property of the end wall 41 is increased, so that the seal insertion portion 44 is partially formed into the seal recess 42. It is possible to prevent the end wall 41 from being easily deformed when it is fitted with such forced fitting.
Further, since the end wall 41 is configured to be thicker than the other part of the skin material 4, for example, the sealing insertion portion 44 is separated from the outer wall surface 45 (outer sealing surface) of the sealing recess 42. The shape of the end wall 41 and the seal insertion portion 44 can be maintained so that the sealed state is not easily released.

(Operational effect 2-1)
The foam layer 3 can be prevented from sticking out by at least one seal portion S1, S2 provided between the end portion of the skin material 4 and the end portion of the core material 2.

  The gas duct 101 provided between the outer wall surface 45 of the sealing concave portion 42 and the sealing insertion portion 44 removes gas generated when the foamed layer 3 is molded (or air confined in the foaming mold 5), etc. 101 can be accommodated. As a result, it is possible to prevent problems such as the generation of voids due to the remaining gas (or air, etc.) in the foaming mold 5.

  Further, by providing the gas duct 101 inside the seal portions S1 and S2 or between the plurality of seal portions S1 and S2, it is assumed that the foam liquid 6 serving as a raw material of the foam layer 3 and the foam liquid 6 are foamed in the gas duct 101. Even when the foamed fluid formed as described above flows in, it is possible to prevent the foamed liquid 6 and the foamed fluid from leaking immediately to the outside.

  As a result, it is possible to prevent the foamed layer 3 from sticking out, improve the appearance quality of the terminal portion of the obtained foamed molded product, and use the foamed molded product as it is.

(Effect 2-2) By providing the gas passage 102 communicating with the gas duct 101 at the end portion of the core material 2, a path for allowing the gas to escape to the gas duct 101 can be secured.
Further, the gas passage 102 has a size that allows gas to pass but does not allow the foam 6 or foam fluid to pass through, so that the foam 6 or foam fluid leaks to the outside through the gas passage 102. Can not be.

  (Operation 2-3) A plurality of gas passages 102 are provided at intervals, and the gas duct 101 is a communication space extending so as to connect the plurality of gas passages 102. It is possible to collect the gas accumulated in each part between the skin material 4 and the gas duct 101 in one place which becomes a communication space via the plurality of gas passages 102. As a result, the gas can be efficiently released to the gas duct 101.

  (Operation and Effect 2-4) By connecting the external communication hole 103 capable of communicating to the outside to the gas duct 101, the gas accumulated in the gas duct 101 is efficiently discharged to the outside through the external communication hole 103. Is possible.

(Operational effect 2c)
By forcibly fitting a plurality of forced fitting overhanging portions 46 provided on the inner surface side of the sealing insertion portion 44 with an interval in the extending direction of the sealing concave portion 42 into the gap 43 described above, As described above, the outer surface of the insertion portion 44 is brought into pressure contact with the outer wall surface 45 of the concave portion 42 for sealing, and sealing is performed between the end portion of the skin material 4 and the end portion of the core material 2. The same effect as effect 2a) can be obtained.

(Operational effect 2-5)
The gas duct 101 provided between the outer wall surface 45 of the sealing concave portion 42 and the sealing insertion portion 44 accommodates the gas generated when the foamed layer 3 is molded, thereby making the above-mentioned (effect 2-1). The same effect can be obtained.

  11 to 13 show the third embodiment and its modification.

  <Configuration> The configuration will be described below.

  First, the structure of the foam molded product in which the core material 2 and the skin material 4 are integrated by the foam layer 3 (not shown) will be described.

(Configuration 3a)
As shown in FIGS. 11 and 12, the taper-shaped tapered protrusion having an outer inclined surface portion 51 and an inner inclined surface portion 52 at least at the distal end portion thereof extends toward the skin material 4 at the end portion of the core material 2. A portion 53 is provided.
In addition, the end portion of the skin material 4 extends toward the core material 2, and has an outer arm portion 54 and an inner arm portion 55 at least at the tip thereof, so that the tapered protrusion 53 can be sandwiched. A bifurcated protrusion 56 is provided.
Then, the outer arm portion 54 of the bifurcated protrusion 56 has a core material abutting end portion 57 that contacts the inner surface of the end portion of the core material 2, and an outer slope contact portion 58 that contacts the outer inclined surface portion 51. It is supposed to have.
The inner arm portion 55 includes a core material separation end portion 61 that is separated from the inner surface of the end portion of the core material 2 and an inner slope contact portion 62 that contacts the inner slope surface portion 52. .

(Supplementary explanation 3a)
Here, the above-mentioned “outer inclined surface portion 51” is an inclined surface that goes inward as it goes to the skin material 4 side.

  The above-mentioned “inner inclined surface portion 52” is an inclined surface that goes outward as it proceeds to the skin material 4 side.

  The “tapered protrusion 53” is formed integrally with the core material 2. A small protrusion 63 is formed at the tip of the tapered protrusion 53 as necessary.

  The above-mentioned “outer arm portion 54” is positioned outward with the tapered protrusion 53 as a reference.

  The above-mentioned “inner arm portion 55” is positioned inward with the tapered protrusion 53 as a reference.

  The above-mentioned “bifurcated protrusion 56” is formed integrally with the skin material 4. A small recess 64 into which the above-described small protrusion 63 is fitted is formed at a branch portion between the outer arm 54 and the inner arm 55 in the bifurcated protrusion 56.

  The above-described “core member abutting end portion 57” is formed at the distal end portion of the outer arm portion 54.

  The “outer slope contact portion 58” described above is formed on the inner side surface of the outer arm portion 54. The outer slope contact portion 58 has an inclined surface having substantially the same angle as the outer inclined surface portion 51. The outer inclined surface contact portion 58 and the outer inclined surface portion 51 form an outer seal portion (seal portion S2). The outer seal portion is a sub seal.

  The above-described “core material separation end portion 61” is formed at the distal end portion of the inner arm portion 55. The core material separation end portion 61 is shorter than the core material abutting end portion 57.

  The “inner slope abutting portion 62” is formed on the outer surface of the inner arm portion 55. The inner slope contact portion 62 has an inclined surface having substantially the same angle as the inner inclined surface portion 52. The inner inclined surface contact portion 62 and the inner inclined surface portion 52 form an inner seal portion (seal portion S1). This inner seal portion is a main seal portion. The inner seal portion and the outer seal portion constitute inner and outer double seal portions (seal portions S1, S2).

(Configuration 3b)
In the above, the inner arm portion 55 may be configured to be thinner than the outer arm portion 54.

(Supplementary explanation 3b)
Here, the above-mentioned “inner arm portion 55” has the same thickness as that of the other portions of the skin material 4, or is slightly thinner or slightly thicker (thin arm portion).
On the other hand, the above-mentioned “outer arm portion 54” is sufficiently thicker than the other portions of the skin material 4 (thick arm portion).

(Configuration 3-1)
In the above, the gas duct 101 that can accommodate the gas generated when the foamed layer 3 is molded may be provided inside the sandwiched portion between the tapered protrusion 53 and the bifurcated protrusion 56.

(Supplementary explanation 3-1)
The “gas duct 101” is formed between the small protrusion 63 and the small recess 64 sandwiched between the inner seal part (seal part S1) and the outer seal part (seal part S2). In this case, the small concave portion 64 is formed deeper than the protruding amount of the small protruding portion 63.

(Configuration 3-2)
Further, the gas generated when the foamed layer 3 is molded is passed through the end portion of the core material 2 through the gas duct 101, and the foamed liquid 6 as the raw material of the foamed layer 3 and the foamed liquid 6 are foamed. A fine gas passage 102 sized so as not to pass the foamed fluid (before the foamed layer 3 is solidified) is provided.

(Supplementary explanation 3-2)
In this case, the gas passage 102 is formed between the inner inclined surface portion 52 and the inner portion of the small protrusion 63.

(Configuration 3-3)
As shown in FIG. 13, a plurality of the gas passages 102 described above are provided at intervals, so that the gas duct 101 becomes a communication space extending so as to connect the plurality of gas passages 102. It is preferable to do this.

(Supplementary explanation 3-3)
In this case, the gas duct 101 is continuously extended in the circumferential direction along the small concave portion 64 provided in the terminal portion of the skin material 4.

(Configuration 3-4)
Further, an external communication hole 103 that can communicate with the outside is connected to the gas duct 101.

(Supplementary explanation 3-4)
In this case, one or a plurality of external communication holes 103 are provided for each important point such as a corner portion of the core member 2 or an intermediate portion of the side portion.

  Next, the manufacturing method of a foam molded product is demonstrated.

(Configuration 3c)
By injecting a foaming liquid 6 as a raw material of the foam layer 3 between the core material 2 set in the foaming mold 5 and the skin material 4, the core material 2 and the skin material 4 are integrated by the foam layer 3. The above-described foamed molded product is manufactured.
At this time, the tapered protrusion 53 provided in the terminal portion of the core material 2 and the bifurcated protrusion 56 provided in the terminal portion of the skin material 4 are sandwiched,
The core material abutting end portion 57 of the outer arm portion 54 of the bifurcated projection 56 is brought into contact with the inner surface of the end portion of the core material 2, and the outer slope contact portion 58 is brought into contact with the outer inclined surface portion 51 of the tapered projection 53. Abut,
Further, the core material separation end 61 of the inner arm portion 55 of the bifurcated projection 56 is separated from the inner surface of the end portion of the core material 2, and the inner slope contact portion 62 is formed on the inner inclined surface portion 52 of the tapered projection 53. By abutting, the sealing between the terminal portion of the core material 2 and the terminal portion of the skin material 4 is performed by the foaming pressure when the foaming layer 3 is formed.

(Supplementary explanation 3c)
The above-described sealing is performed in a mold clamping process described later.

(Configuration 3-5)
Further, the gas duct 101 provided between the tapered protrusion 53 and the bifurcated protrusion 56 is made to contain the gas generated when the foamed layer 3 is molded.

(Supplementary explanation 3-5)
In addition, the above-described gas duct 101 is used for degassing in a foaming process to be described later.

  <Effect> According to this embodiment, the following effects can be obtained.

(Operational effect 3a)
By adopting a seal structure in which a bifurcated protrusion 56 provided at the terminal portion of the skin material 4 is sandwiched between the tapered protrusion 53 provided at the terminal portion of the core material 2, the terminal portion of the core material 2 and the skin material 4 are provided. It is possible to perform sealing in a state where the terminal portion is arranged substantially in parallel, and the thickness of the terminal portion of the foam molded product can be prevented from being increased due to the sealing. That is, the terminal shape of the product can be made clear.

  Further, the tapered protrusion 53 and the bifurcated protrusion 56 can be easily and reliably sandwiched. As a result, it is possible to eliminate problems such as poor fitting of the seal portion and deformation of the skin material 4 during fitting.

  Further, the core material abutting end portion 57 of the outer arm portion 54 of the skin material 4 is abutted against the inner surface of the end portion of the core material 2 so that the position regulation in the thickness direction of the core material 2 and the skin material 4 is restricted. It can be done reliably.

  Then, the outer slope contact portion 58 of the outer arm portion 54 is brought into contact with the outer inclined surface portion 51 of the tapered protrusion 53, and the inner slope contact portion 62 of the inner arm portion 55 is brought into contact with the inner inclined surface portion 52 of the tapered protrusion 53. By making it contact | abut, position control of the surface direction of the core material 2 and the skin material 4 can be performed.

  Further, the core material separation end 61 of the inner arm portion 55 is separated from the inner surface of the end portion of the core member 2, so that the inner arm portion 55 is bent against the inner surface of the end portion of the core member 2. Can be surely prevented. Further, a soft tactile sensation can be imparted to the inner portion of the end portion of the foam molded product with respect to the tapered protrusion 53.

  Since the inner slope contact portion 62 of the inner arm portion 55 is pressed against the inner inclined surface portion 52 of the tapered protrusion 53 by the foaming pressure when the foam layer 3 is molded, both are sealed. Sealing can be advantageously performed at a position inside the tapered protrusion 53 that is located slightly inside the terminal portion.

  As described above, the outside of the foam layer 3 due to leakage of the foaming liquid 6 around the terminal portion of the product is eliminated, the quality around the terminal portion is improved, and the foam molded product is made the same size as the product. It can be formed.

(Operation effect 3b)
By configuring the inner arm portion 55 to be thinner than the outer arm portion 54, it is possible to improve the followability and adhesion of the inner arm portion 55 with respect to the inner inclined surface portion 52 of the tapered protrusion 53, thereby improving the sealing performance. it can. Moreover, the tactile sensation of the inner portion of the end portion of the foam molded product with respect to the tapered protrusion 53 can be made softer.

  On the contrary, when the outer arm portion 54 is thicker than the inner arm portion 55, it is possible to give a sense of rigidity to the terminal portion of the foam molded product. Further, the position regulation in the thickness direction between the core material 2 and the skin material 4 can be made stronger.

(Operational effect 3-1)
The foam layer 3 can be prevented from sticking out by at least one seal portion S1, S2 provided between the end portion of the skin material 4 and the end portion of the core material 2.

  Gas generated when the foamed layer 3 is molded (or air confined in the foam molding die 5) by the gas duct 101 provided inside the sandwiched portion between the tapered projecting portion 53 and the bifurcated projecting portion 56 is used. It can be accommodated in the gas duct 101. As a result, it is possible to prevent problems such as the generation of voids due to the remaining gas (or air, etc.) in the foaming mold 5.

  Further, by providing the gas duct 101 inside the seal portion (seal portions S1, S2) or between the plurality of seal portions, the foam liquid 6 serving as the raw material of the foam layer 3 or the foam liquid 6 is temporarily provided in the gas duct 101. Even if the foamed fluid formed by foaming flows in, it is possible to prevent the foamed liquid 6 and the foamed fluid from leaking immediately to the outside.

  As a result, it is possible to prevent the foamed layer 3 from sticking out, improve the appearance quality of the terminal portion of the obtained foamed molded product, and use the foamed molded product as it is.

(Operational effect 3-2)
By providing the gas passage 102 communicating with the gas duct 101 at the end portion of the core material 2, a path for allowing the gas to escape to the gas duct 101 can be secured.
Further, the gas passage 102 has a size that allows gas to pass but does not allow the foam 6 or foam fluid to pass through, so that the foam 6 or foam fluid leaks to the outside through the gas passage 102. Can not be.

(Operation effect 3-3)
A plurality of gas passages 102 are provided at intervals, and the gas duct 101 is a communication space extending so as to connect between the plurality of gas passages 102, thereby providing a space between the core material 2 and the skin material 4. The gas accumulated in each part can be collected in one gas duct 101 which is a communication space via a plurality of gas passages 102. As a result, the gas can be efficiently released to the gas duct 101.

(Operational effect 3-4)
By connecting to the gas duct 101 the external communication hole 103 that can communicate with the outside, the gas accumulated in the gas duct 101 can be efficiently discharged to the outside through the external communication hole 103.

(Operation effect 3c)
A taper protrusion 53 provided at the terminal portion of the core material 2 and a bifurcated protrusion portion 56 provided at the terminal portion of the skin material 4 are sandwiched, and the core material protrusion of the outer arm portion 54 of the bifurcated protrusion 56 is sandwiched. The abutting end portion 57 is brought into contact with the inner surface of the end portion of the core member 2, the outer slope contact portion 58 is brought into contact with the outer slope surface portion 51 of the tapered projection portion 53, and the inner arm of the bifurcated projection portion 56 The core material separation end 61 of the portion 55 is separated from the inner surface of the end portion of the core material 2, and the inner slope contact portion 62 is brought into contact with the inner sloped surface portion 52 of the tapered protrusion 53, whereby the foam layer 3 is By causing the end portion of the core material 2 and the end portion of the skin material 4 to be sealed by the foaming pressure at the time of molding, it is possible to obtain the same effect as the above-described (effect 3a). .

(Operation effect 3-5)
By allowing the gas duct 101 provided between the tapered protrusion 53 and the bifurcated protrusion 56 to contain the gas generated when the foamed layer 3 is molded, the same action as described above (the operational effect 3-1). An effect can be obtained.

  FIGS. 14-16 shows Example 4 and its modification.

  <Configuration> The configuration will be described below.

  First, the structure of the foam molded product in which the core material 2 and the skin material 4 are integrated by the foam layer 3 (not shown) will be described.

(Configuration 4a)
As shown in FIGS. 14 and 15, an end wall 71 extending toward the terminal portion of the core material 2 is provided at the terminal portion of the skin material 4.
And the recessed part 72 for a seal | sticker dented to the back surface side of the core material 2 is provided in the terminal part of the core material 2. As shown in FIG.
Further, a bifurcated seal portion 73 that can be inserted into the sealing recess 72 is provided at the distal end portion of the end wall 71.
Then, by opening the bifurcated seal portion 73 inside the sealing recess 72, both side surfaces 74, 75 of the bifurcated seal portion 73 are formed on the outer peripheral wall surface 76 and the inner peripheral wall surface 77 of the sealing recess portion 72. On the other hand, an expanding projection 78 that can be pressed against each other is provided.

(Supplementary explanation 4a)
Here, the above-mentioned “end wall 71” is formed integrally with the skin material 4, and becomes at least a part of the end face of the foam molded product and at least a part of the end face of the product. The end wall 71 is preferably formed in a bent shape so as to be perpendicular to the surfaces of the core material 2 and the skin material 4. However, the end wall 71 may be inclined with respect to the surfaces of the core material 2 and the skin material 4.

  In this case, the length of the end wall 71 is substantially the same as the thickness of the foam molded product, or is slightly shorter or slightly longer than that. The end wall 71 extends continuously in the circumferential direction along the edge of the foam molded product. However, depending on the shape of the foam molded product, the end wall 71 may be discontinuous in the circumferential direction.

  The “sealing recess 72” described above is formed integrally with the core member 2 and has the outer peripheral wall surface 76, the inner peripheral wall surface 77, and the top surface 79 described above. The outer peripheral wall surface 76 and the inner peripheral wall surface 77 are substantially straight with respect to the surfaces of the core material 2 and the skin material 4. The top surface 79 is substantially parallel to the surfaces of the core material 2 and the skin material 4. The above-described expanding projection 78 is provided at an intermediate portion of the top surface 79 so as to extend downward in the drawing. As shown in FIG. 16, the sealing recess 72 is a circumferential groove or the like that continuously extends in the circumferential direction along the edge of the foam molded product. However, depending on the shape of the foam molded product, the sealing recess 72 may be discontinuous in the circumferential direction. The sealing recess 72 is configured to have a substantially constant thickness and to have a concave shape on both the inner and outer surfaces.

  The above-described “bifurcated seal portion 73” is formed integrally with the distal end portion of the end wall 71. The bifurcated seal portion 73 has substantially the same length as the depth of the sealing recess 72.

  Further, both side surfaces 74 and 75 of the bifurcated seal portion 73 are substantially straight with respect to the surfaces of the core material 2 and the skin material 4.

  A slight gap is formed between the outer peripheral wall surface 76 and the inner peripheral wall surface 77 of the sealing recess 72 and both side surfaces 74 and 75 of the bifurcated seal portion 73 in order to facilitate the fitting of both. It is preferable to do so.

  A groove 81 for bifurcating the bifurcated seal portion 73 is formed at the tip of the bifurcated seal portion 73. The groove portion 81 has, for example, a narrow shape with a width becoming narrower toward the back side, such as a V groove or a U groove. In this case, the groove portion 81 has a pair of slope portions 82 and 83 on its inner surface.

  On the other hand, the above-mentioned “expansion protrusion 78” can expand (forcibly expand) the bifurcated seal 73 by entering the bifurcated seal 73. For this purpose, the expanding projection 78 has a tapered shape that is slightly wider or larger in angle than the groove 81 of the bifurcated seal portion 73.

  And between the both side surfaces 74 and 75 of the bifurcated seal portion 73 and the outer peripheral wall surface 76 and the inner peripheral wall surface 77 of the sealing recess 72, as shown in FIG. 15, the inner seal portion (seal portion S1) and The inner and outer double seal portions (seal portions S1, S2) including the outer seal portion (seal portion S2) are formed. In this case, the inner seal portion becomes the main seal, and the outer seal portion becomes the sub seal portion.

(Configuration 4b)
In the above, the opening degree increase for increasing the opening degree of the bifurcated seal part 73 by the penetration of the expanding projection part 78 inside the bifurcated seal part 73 or the outer surface of the expanding projection part 78. A guide portion 84 may be provided.

(Supplementary explanation 4b)
Here, the above-described “opening degree increasing guide portion 84” is a protrusion provided inside the bifurcated seal portion 73. The opening increasing guide portion 84 may be a protrusion provided on the outer surface of the expansion protrusion 78 or the like.

(Configuration 4-1)
A gas duct 101 that can accommodate a gas generated when the foamed layer 3 is molded may be provided between the bifurcated seal portion 73 and the expansion projection 78.

(Supplementary explanation 4-1)
The gas duct 101 is located between the inner seal part (seal part S1) and the outer seal part (seal part S2), and is located at the back of the groove part 81 of the bifurcated seal part 73. In addition, a small concave portion having a depth that cannot be reached by the distal end portion of the projection portion 78 is provided, and the small concave portion is closed by the distal end portion of the expanding projection 78.

(Configuration 4-2)
Further, the gas generated when the foamed layer 3 is molded is passed through the end portion of the core material 2 through the gas duct 101, and the foamed liquid 6 as the raw material of the foamed layer 3 and the foamed liquid 6 are foamed. A fine gas passage 102 sized so as not to pass the foamed fluid (before the foamed layer 3 is solidified) is provided.

(Supplementary explanation 4-2)
In this case, the gas passage 102 is formed between the inner peripheral wall surface 77, the top surface 79, and the inner surface of the expanding projection 78 in the sealing recess 72.

(Configuration 4-3)
Then, as shown in FIG. 16, a plurality of the gas passages 102 are provided at intervals, and the gas duct 101 becomes a communication space extending so as to connect the plurality of gas passages 102. It is preferable to do this.

(Supplementary explanation 4-3)
In this case, the gas duct 101 is continuously extended in the circumferential direction along the inner part of the groove part 81 of the bifurcated seal part 73 provided in the skin material 4. In order to form the gas duct 101 having a sufficient size, the groove 81 of the bifurcated seal portion 73 is formed so as to have a depth that does not reach the tip of the expansion projection 78.

(Configuration 4-4)
Further, an external communication hole 103 that can communicate with the outside is connected to the gas duct 101.

(Supplementary explanation 4-4)
In this case, one or a plurality of external communication holes 103 are provided for each important point such as a corner portion of the core member 2 or an intermediate portion of the side portion.

  Next, the manufacturing method of a foam molded product is demonstrated.

(Configuration 4c)
By injecting a foaming liquid 6 as a raw material of the foam layer 3 between the core material 2 set in the foaming mold 5 and the skin material 4, the core material 2 and the skin material 4 are integrated by the foam layer 3. To produce a foamed molded product.
At this time, an end wall 71 extending toward the end portion of the core material 2 is provided at the end portion of the skin material 4, and the bifurcated seal portion 73 provided at the distal end portion of the end wall 71 is attached to the end portion of the core material 2. It is fitted to the sealing recess 72 provided in the terminal portion, and at the same time, the expanding projection 78 provided in the sealing recess 72 is inserted into the bifurcated seal 73, By opening the bifurcated seal portion 73, both side surfaces 74, 75 of the bifurcated seal portion 73 are brought into pressure contact with the outer peripheral wall surface 76 and the inner peripheral wall surface 77 of the sealing recess 72, respectively, and the end of the skin material 4 Sealing is performed between the portion and the end portion of the core material 2.

(Supplementary explanation 4c)
The above-described sealing is performed in a mold clamping process described later.

(Configuration 4-5)
Further, the gas duct 101 provided between the bifurcated seal portion 73 and the expansion projection 78 is made to contain the gas generated when the foamed layer 3 is molded.

(Supplementary explanation 4-5)
In addition, the above-described gas duct 101 is used for degassing in a foaming process to be described later.

  <Effect> According to this embodiment, the following effects can be obtained.

(Operational effect 4a)
A bifurcated seal portion 73 that can be inserted into the sealing recess 72 is provided at the tip of the end wall 71, and the bifurcated seal portion 73 is opened inside the sealing recess 72, thereby providing a bifurcated seal portion. By providing the projecting portions 78 for expanding so that both side surfaces 74 and 75 of 73 can be pressed against the outer peripheral wall surface 76 and the inner peripheral wall surface 77 of the recess 72 for sealing, respectively.
While having a sealing structure by forced pressure contact, fitting of the sealing insertion portion to the sealing recess 72 can be facilitated, and occurrence of poor fitting can be prevented.

  Further, since the force acting at the time of fitting is released in the direction of expanding the bifurcated seal portion 73, for example, an excessive force is applied to the skin material 4 so that the skin material 4 is wrinkled. Can be reduced.

  Further, since a double inner / outer seal structure is obtained at the position of the outer peripheral wall surface 76 and the position of the inner peripheral wall surface 77 of the sealing recess 72, high sealing performance can be obtained.

(Operational effect 4b)
The opening increasing guide portion 84 provided on the inside of the bifurcated seal portion 73 or on the outer surface of the expansion projection portion 78 increases the opening amount of the bifurcated seal portion 73 by entering the expansion projection portion 78. By increasing the sealing force, the sealing force between both side surfaces 74 and 75 of the bifurcated seal portion 73 and the outer peripheral wall surface 76 and the inner peripheral wall surface 77 of the sealing recess 72 can be further increased.

(Operational effect 4-1)
The foam layer 3 can be prevented from sticking out by at least one seal portion S1, S2 provided between the end portion of the skin material 4 and the end portion of the core material 2.

  A gas duct 101 provided between the bifurcated seal portion 73 and the expanding projection portion 78 causes gas (or air confined in the foam molding die 5) generated when the foamed layer 3 is molded to the gas duct 101. Can be accommodated. As a result, it is possible to prevent problems such as the generation of voids due to the remaining gas (or air, etc.) in the foaming mold 5.

  Further, by providing the gas duct 101 inside the seal portions S1 and S2 or between the plurality of seal portions S1 and S2, it is assumed that the foam liquid 6 serving as a raw material of the foam layer 3 and the foam liquid 6 are foamed in the gas duct 101. Even when the foamed fluid formed as described above flows in, it is possible to prevent the foamed liquid 6 and the foamed fluid from leaking immediately to the outside.

  As a result, it is possible to prevent the foamed layer 3 from sticking out, improve the appearance quality of the terminal portion of the obtained foamed molded product, and use the foamed molded product as it is.

(Effect 4-2) By providing the gas passage 102 communicating with the gas duct 101 at the end portion of the core material 2, a path for allowing the gas to escape to the gas duct 101 can be secured.
Further, the gas passage 102 has a size that allows gas to pass but does not allow the foam 6 or foam fluid to pass through, so that the foam 6 or foam fluid leaks to the outside through the gas passage 102. Can not be.

  (Operation Effect 4-3) A plurality of gas passages 102 are provided at intervals, and the gas duct 101 is a communication space extending so as to connect the plurality of gas passages 102. It is possible to collect the gas accumulated in each part between the skin material 4 and the gas duct 101 in one place which becomes a communication space via the plurality of gas passages 102. As a result, the gas can be efficiently released to the gas duct 101.

  (Operational Effect 4-4) By connecting the external communication hole 103 that can communicate with the outside to the gas duct 101, the gas accumulated in the gas duct 101 can be efficiently discharged to the outside through the external communication hole 103. Is possible.

(Operational effect 4c)
By opening the bifurcated seal portion 73 by inserting the expanding projection 78 provided inside the seal recess 72 into the bifurcated seal portion 73, both side surfaces 74, 75 of the bifurcated seal portion 73 are opened. Are forcibly pressed against the outer peripheral wall surface 76 and the inner peripheral wall surface 77 of the sealing recess 72, respectively, so that sealing is performed between the end portion of the skin material 4 and the end portion of the core material 2. Thus, the same effect as the above-described (effect 4a) can be obtained.

(Operational effect 4-5)
The gas duct 101 provided between the bifurcated seal 73 and the expansion projection 78 contains the gas generated when the foamed layer 3 is molded, so that it is the same as the above (Effect 4-1). The effect of this can be obtained.

  Although the embodiments of the present invention have been described in detail with reference to the drawings, the embodiments are only examples of the present invention, and the present invention is not limited to the configurations of the embodiments. Needless to say, design changes and the like within a range not departing from the gist of the invention are included in the present invention. Further, for example, when each embodiment includes a plurality of configurations, it is a matter of course that possible combinations of these configurations are included even if not specifically described. Further, when a plurality of embodiments and modifications are shown, it is needless to say that possible combinations of configurations extending over these are included even if not specifically described. Further, the configuration depicted in the drawings is of course included even if not particularly described. Further, when there is a term of “etc.”, it is used in the sense that the equivalent is included. In addition, when there are terms such as “almost”, “about”, “degree”, etc., they are used in the sense that they include those in the range and accuracy recognized by common sense.

1 interior compartment panel 2 core material 3 foam layer 4 skin material 5 foaming mold 6 foaming liquid 7 foaming male mold 8 foaming female mold 101 gas duct 102 gas passage 103 external communication hole S1 seal part S2 seal part

Claims (5)

In the foam molded product in which the core material and the skin material are integrated by the foam layer,
Between the terminal part of the skin material and the terminal part of the core material, at least one seal part for preventing the foam layer from sticking out is provided,
A foam-molded article characterized in that a gas duct capable of containing a gas generated when a foam layer is molded is provided inside the seal part or between a plurality of seal parts.   The gas generated when molding the foam layer is communicated with the gas duct through the end portion of the core material, and the foam liquid that is the raw material of the foam layer or the foam liquid is foamed. The foam layer is solidified. The foam molded article according to claim 1, further comprising a gas passage having a size that does not allow the foamed fluid to pass therethrough.   3. The gas passage according to claim 1, wherein a plurality of the gas passages are provided at intervals, and the gas duct is a communication space extending so as to connect the plurality of gas passages. Foam molded product.   The foamed molded article according to any one of claims 1 to 3, wherein an external communication hole capable of communicating with the outside is connected to the gas duct. By injecting a foaming liquid, which is the raw material for the foam layer, between the core material and the skin material set in the foam molding die, a foam molded product in which the core material and the skin material are integrated by the foam layer is manufactured. In the method of manufacturing a foamed molded product,
While providing at least one seal part between the terminal part of the skin material and the terminal part of the core material to prevent the foam layer from sticking,
A method for producing a foam molded article, comprising: storing a gas generated when a foamed layer is molded in a gas duct provided inside the seal part or between a plurality of seal parts.