JP2019000994A - Foam molding method and foam molded article - Google Patents
Foam molding method and foam molded article Download PDFInfo
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- JP2019000994A JP2019000994A JP2017114938A JP2017114938A JP2019000994A JP 2019000994 A JP2019000994 A JP 2019000994A JP 2017114938 A JP2017114938 A JP 2017114938A JP 2017114938 A JP2017114938 A JP 2017114938A JP 2019000994 A JP2019000994 A JP 2019000994A
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- 238000010097 foam moulding Methods 0.000 title claims abstract description 26
- 239000006260 foam Substances 0.000 title claims description 43
- 239000000463 material Substances 0.000 claims abstract description 89
- 239000011162 core material Substances 0.000 claims abstract description 83
- 238000005187 foaming Methods 0.000 claims abstract description 17
- 238000007789 sealing Methods 0.000 claims description 57
- 238000005452 bending Methods 0.000 claims description 18
- 238000000465 moulding Methods 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 238000002788 crimping Methods 0.000 abstract description 11
- 230000000694 effects Effects 0.000 description 7
- 238000007872 degassing Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000013022 venting Methods 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Instrument Panels (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Molding Of Porous Articles (AREA)
Abstract
Description
この発明は、発泡成形方法および発泡成形品に関するものである。 The present invention relates to a foam molding method and a foam molded article.
自動車などの車両には、車室内にインストルメントパネルやその他の内装パネルが設置されている。 In vehicles such as automobiles, an instrument panel and other interior panels are installed in the passenger compartment.
このような内装パネルには、発泡成形品で構成したものが存在している（例えば、特許文献１参照）。 As such an interior panel, there is one constituted by a foam molded product (for example, see Patent Document 1).
発泡成形品は、芯材と表皮材との間に発泡層を形成したものである。発泡層は、芯材と表皮材とをシール部でシールした部分の内側に発泡成形によって形成する。 The foamed molded product is obtained by forming a foamed layer between a core material and a skin material. The foam layer is formed by foam molding inside the portion where the core material and the skin material are sealed by the seal portion.
この際、芯材と表皮材との間のシール部には、芯材に設けた凹部に表皮材の縁部を収容してなる自己シール部や、芯材と表皮材の縁部とを発泡成形型で挟着してなる挟着シール部などが存在している。 At this time, the seal part between the core material and the skin material is foamed with a self-sealing part in which the edge part of the skin material is accommodated in a recess provided in the core material, or the edge part of the core material and the skin material. There is a sandwich seal portion that is sandwiched by a mold.
このうち、自己シール部は、芯材を射出成形する際の型抜き方向との関係で全周に設けることが難しく、また、挟着シール部は、後工程で芯材と表皮材の縁部を切除する必要などによって無駄部分が生じ易いので、自己シール部と挟着シール部との良い部分を組み合わせて成形することが行われる。 Of these, the self-sealing part is difficult to be provided on the entire circumference due to the relationship with the die-cutting direction when the core material is injection-molded, and the sandwich seal part is the edge of the core material and the skin material in the subsequent process. Since it is easy to generate a useless part due to the necessity of cutting off, a good part of the self-seal part and the sandwich seal part is combined and molded.
しかしながら、自己シール部と挟着シール部とを組み合わせて設けた場合、自己シール部と挟着シール部との切替部分から発泡層のハミ出しが生じ易いなどの問題があった。 However, when the self-sealing portion and the sandwiching seal portion are provided in combination, there is a problem that the foamed layer tends to stick out from the switching portion between the self-sealing portion and the sandwiching seal portion.
そこで、本発明は、主に、上記した問題点を解決することを目的としている。 Therefore, the present invention mainly aims to solve the above-described problems.
上記課題を解決するために、本発明は、
芯材と表皮材とをシール部でシールして、シール部の内側に発泡層を成形する発泡成形方法において、
前記シール部の一部を、前記芯材に設けた凹部に前記表皮材の縁部を収容してなる自己シール部とし、前記シール部の残りの部分を、前記芯材と前記表皮材の縁部とを発泡成形型で挟着する挟着シール部とすると共に、
該挟着シール部と前記自己シール部との間の切替部分は、前記表皮材の縁部を前記芯材に圧着させる圧着シール部とすることを特徴とする。
また、本発明は、
芯材と表皮材と発泡層とを有すると共に、該発泡層を、前記芯材と表皮材とをシール部でシールした部分の内側に形成した発泡成形品において、
前記シール部の一部に、前記芯材に設けた凹部に前記表皮材の縁部を収容してなる自己シール部を有し、前記シール部の残りの部分に、前記芯材と前記表皮材の縁部とを発泡成形型で挟着してなる挟着シール部を有すると共に、
該挟着シール部と前記自己シール部との間の切替部分に、前記表皮材の縁部を前記芯材に圧着させてなる圧着シール部を有することを特徴とする。
これらにより、切替部分は、圧着シール部によってシールされる。
In order to solve the above problems, the present invention provides:
In the foam molding method of sealing the core material and the skin material with the seal portion, and molding the foam layer inside the seal portion,
A part of the seal part is a self-seal part formed by accommodating an edge part of the skin material in a recess provided in the core material, and the remaining part of the seal part is an edge between the core material and the skin material. And a sandwich seal part to sandwich the part with a foam mold,
The switching portion between the sandwiching seal portion and the self-sealing portion is a pressure-bonding seal portion that crimps an edge portion of the skin material to the core material.
The present invention also provides:
In a foam molded article having a core material, a skin material, and a foam layer, and forming the foam layer inside a portion where the core material and the skin material are sealed by a seal portion,
A part of the seal portion has a self-sealing portion that accommodates an edge portion of the skin material in a recess provided in the core material, and the core material and the skin material are formed in the remaining portion of the seal portion. And having a sandwich seal part formed by sandwiching the edge part of the mold with a foaming mold,
A switching portion between the sandwich seal portion and the self-sealing portion has a pressure-bonding seal portion formed by pressing an edge portion of the skin material to the core material.
As a result, the switching portion is sealed by the pressure-bonding seal portion.
本発明によれば、上記構成によって、自己シール部と挟着シール部との切替部分での発泡層のハミ出しを抑制することなどができる。 According to the present invention, it is possible to suppress the foam layer from sticking out at the switching portion between the self-sealing portion and the sandwiched sealing portion.
以下、本実施の形態を、図面を用いて詳細に説明する。
図１〜図１４は、この実施の形態を説明するためのものである。
Hereinafter, the present embodiment will be described in detail with reference to the drawings.
1 to 14 are for explaining this embodiment.
＜構成＞以下、この実施例の構成について説明する。 <Configuration> The configuration of this embodiment will be described below.
図中の方向は、車両前後方向Ｘ、車幅方向Ｙ、上下方向Ｚとなっている。
図１に示すように、自動車などの車両における、車室内にインストルメントパネル１などの内装パネル２を設置する。
The directions in the figure are the vehicle longitudinal direction X, the vehicle width direction Y, and the vertical direction Z.
As shown in FIG. 1, an interior panel 2 such as an instrument panel 1 is installed in a vehicle interior of a vehicle such as an automobile.
このような内装パネル２を、図２に示すような発泡成形品３で構成する。発泡成形品３は、芯材４と表皮材５との間に発泡層６を形成したものである。発泡層６は、芯材４と表皮材５とをシール部７でシールした部分の内側に発泡成形によって形成する。 Such an interior panel 2 is constituted by a foam molded product 3 as shown in FIG. The foam molded product 3 is obtained by forming a foam layer 6 between the core material 4 and the skin material 5. The foam layer 6 is formed by foam molding inside the portion where the core material 4 and the skin material 5 are sealed by the seal portion 7.
ここで、インストルメントパネル１は、車室の前部におけるフロントウインドウＦＷの下部に設置される大型のパネルである。インストルメントパネル１の運転席側の下部にはロワパネルＬＰが設置され、インストルメントパネル１の助手席の下部にはグローブボックスＧ／Ｂが設置される。また、インストルメントパネル１の内部には、ほぼ車幅方向Ｙへ延びる車体強部材８が設置されており、インストルメントパネル１の車幅方向Ｙの両端部には、サイドパネル９が取付けられる。 Here, the instrument panel 1 is a large-sized panel installed in the lower part of the front window FW in the front part of a vehicle interior. A lower panel LP is installed in the lower part of the driver panel side of the instrument panel 1, and a glove box G / B is installed in the lower part of the passenger seat of the instrument panel 1. A strong vehicle body member 8 extending substantially in the vehicle width direction Y is installed inside the instrument panel 1, and side panels 9 are attached to both ends of the instrument panel 1 in the vehicle width direction Y.
内装パネル２には、インストルメントパネル１以外に、センターコンソールや、ドアパネルや、天井パネルや、これらのパネルに取付けられるサブパネルなど各種のものが存在している。 In addition to the instrument panel 1, the interior panel 2 includes various types such as a center console, a door panel, a ceiling panel, and a sub-panel attached to these panels.
発泡成形品３は、図３に示すように、発泡成形装置の発泡成形型１１，１２にセットした芯材４と表皮材５との間の空間（成形空間１３）に発泡液１４を注入して型締めすることによって発泡液１４（または発泡剤）を発泡させて、図４に示すように、成形空間１３に発泡層６を成形するようにしたものである。発泡成形によって、芯材４と表皮材５と発泡層６とが一体化される。 As shown in FIG. 3, the foamed molded product 3 is prepared by injecting a foaming liquid 14 into a space (molding space 13) between the core material 4 and the skin material 5 set in the foaming molds 11, 12 of the foam molding apparatus. The foaming liquid 14 (or foaming agent) is foamed by clamping the mold, and the foamed layer 6 is molded in the molding space 13 as shown in FIG. The core material 4, the skin material 5, and the foam layer 6 are integrated by foam molding.
芯材４は、内装パネル２の裏面側を構成する部材であり、硬質の樹脂によって比較的厚肉に作られる。芯材４は、基本的にほぼ一定の肉厚を有している。表皮材５は、内装パネル２の表面側（意匠面）を構成する部材であり、軟質の樹脂によって比較的薄肉に作られる。表皮材５は、基本的にほぼ一定の肉厚を有している。発泡層６は、クッション性を有する発泡ウレタンなどによって構成される。発泡層６は、基本的にほぼ一定の肉厚を有している。 The core material 4 is a member constituting the back side of the interior panel 2 and is made relatively thick with a hard resin. The core material 4 basically has a substantially constant thickness. The skin material 5 is a member constituting the surface side (design surface) of the interior panel 2, and is made relatively thin with a soft resin. The skin material 5 basically has a substantially constant thickness. The foam layer 6 is made of foamed urethane having cushioning properties. The foam layer 6 basically has a substantially constant thickness.
なお、発泡成形装置においては、柔軟な表皮材５を下型（発泡成形型１２）にセットし、硬質の芯材４を上型（発泡成形型１１）にセットするのが一般的である。但し、以下の図面では、見易いように上下を反対にしている場合がある。 In the foam molding apparatus, it is common to set the flexible skin material 5 in the lower mold (foam mold 12) and the hard core material 4 in the upper mold (foam mold 11). However, in the following drawings, the top and bottom may be reversed for easy viewing.
以上のような基本的な構成に対し、この実施例では、以下のような構成を備えるようにしている。 In contrast to the basic configuration as described above, this embodiment has the following configuration.
先ず、発泡成形方法について説明する。 First, the foam molding method will be described.
（１）図５に示すように、シール部７の一部を、芯材４に設けた凹部２１に表皮材５の縁部２２を収容してなる自己シール部２３とする。また、図６に示すように、シール部７の残りの部分を、芯材４（の面２４）と表皮材５の縁部２５とを発泡成形型１１，１２で挟着する挟着シール部２６とする。
そして、図７または図８に示すように、挟着シール部２６と自己シール部２３との間の切替部分２７を、表皮材５の縁部２８の少なくとも一部（例えば、先端部周辺）を芯材４（の面２４）に圧着させる圧着シール部２９にする。
(1) As shown in FIG. 5, a part of the seal part 7 is a self-seal part 23 in which the edge part 22 of the skin material 5 is accommodated in the concave part 21 provided in the core material 4. Further, as shown in FIG. 6, the remaining portion of the seal portion 7 is a sandwich seal portion that sandwiches the core material 4 (surface 24) and the edge portion 25 of the skin material 5 with foaming molds 11 and 12. 26.
Then, as shown in FIG. 7 or FIG. 8, the switching part 27 between the sandwich seal part 26 and the self-seal part 23 is replaced with at least part of the edge part 28 of the skin material 5 (for example, around the tip part). A pressure-bonding seal portion 29 is formed to be pressure-bonded to the core material 4 (surface 24).
ここで、図５に示すように、自己シール部２３の凹部２１は芯材４に対して、コ字状（Ｕ字状）または二股状の部分などとして設けることができる。自己シール部２３は、芯材４と表皮材５との間でシールを行うようにしたシール部７のことである。自己シール部２３には、芯材４に設けた凹部２１に表皮材５の縁部２２を強嵌合して両者の凹凸嵌合の嵌合力によってシール力を得るようにしたものと、芯材４の凹部２１に表皮材５の縁部２２を遊嵌または弱嵌合して発泡液１４の発泡圧で表皮材５の縁部２２を芯材４の凹部２１に圧着することでシール力を得るようにしたものとがある。この実施例では、前者としている。自己シール部２３は、例えば、インストルメントパネル１の前縁部およびその周辺（前縁側部分３１、図２参照）などのように、芯材４の一部が表面に露出するような位置などに使われる。 Here, as shown in FIG. 5, the concave portion 21 of the self-sealing portion 23 can be provided as a U-shaped (U-shaped) or bifurcated portion with respect to the core material 4. The self-sealing portion 23 is the sealing portion 7 that performs sealing between the core material 4 and the skin material 5. In the self-sealing portion 23, the edge portion 22 of the skin material 5 is strongly fitted to the concave portion 21 provided in the core material 4, and a sealing force is obtained by the fitting force of both concave and convex fittings, and the core material The edge 22 of the skin material 5 is loosely fitted or weakly fitted into the recess 21 of 4 and the edge 22 of the skin 5 is pressed against the recess 21 of the core material 4 with the foaming pressure of the foaming liquid 14 to provide a sealing force. There are things that you get. In this embodiment, the former is used. For example, the self-sealing portion 23 is located at a position where a part of the core material 4 is exposed on the surface, such as the front edge portion of the instrument panel 1 and its periphery (see the front edge side portion 31, see FIG. 2). used.
自己シール部２３では、図５に示すように、表皮材５の縁部２２は、凹部２１へ嵌合した時にシール効果が得易いように、表皮材５の意匠面などに対して所要の屈曲角度３２を有して形成される。自己シール部２３では、表皮材５の縁部２２は、表皮材５の他の部分（意匠面など）と同じかまたはそれよりも若干厚肉（肉厚３３）に形成される。 In the self-sealing portion 23, as shown in FIG. 5, the edge portion 22 of the skin material 5 has a required bending with respect to the design surface of the skin material 5 so that a sealing effect can be easily obtained when fitted into the recess 21. Formed with an angle 32. In the self-sealing portion 23, the edge portion 22 of the skin material 5 is formed to be the same as or slightly thicker than the other portions (design surface, etc.) of the skin material 5 (thickness 33).
挟着シール部２６は、図６に示すように、発泡成形型１１，１２の型締め力を利用してシールを行うようにしたシール部７のことである。挟着シール部２６は、例えば、インストルメントパネル１の後縁部３４（または下縁部）などのように、外部から目立たないような位置などに使われる。挟着シール部２６の周辺は、成形後に不要部分をカットすることができる。 As shown in FIG. 6, the sandwich seal portion 26 is a seal portion 7 that performs sealing by using the clamping force of the foaming molds 11 and 12. The sandwich seal part 26 is used at a position where it is not conspicuous from the outside, such as the rear edge part 34 (or the lower edge part) of the instrument panel 1, for example. In the vicinity of the sandwich seal part 26, unnecessary portions can be cut after molding.
図の挟着シール部２６では、表皮材５の縁部２５は、芯材４の面２４に平行に重ね合わされている。そのため、挟着シール部２６では、表皮材５の縁部２５は、表皮材５の意匠面などに対してほとんど角度を有していない状態に形成されている。挟着シール部２６では、表皮材５の縁部２５は、表皮材５の他の部分と同じかそれよりも若干薄肉（肉厚３５）に形成されている。 In the illustrated sandwich seal portion 26, the edge portion 25 of the skin material 5 is overlapped in parallel with the surface 24 of the core material 4. Therefore, in the sandwich seal part 26, the edge part 25 of the skin material 5 is formed in a state having almost no angle with respect to the design surface of the skin material 5. In the sandwich seal portion 26, the edge portion 25 of the skin material 5 is formed to have the same thickness as the other portions of the skin material 5 or slightly thinner (thickness 35).
切替部分２７は、挟着シール部２６と自己シール部２３との境界部分であり、例えば、インストルメントパネル１の両側部３７の位置などに設定される。切替部分２７では、表皮材５の縁部２８は、自己シール部２３を構成する芯材４の凹部２１から出た状態になると共に、芯材４の面２４に平行に重ね合わされていない状態で発泡成形型１１，１２によって型締めされることになる。そのため、圧着シール部２９は、表皮材５自体の柔軟性を利用して表皮材５の縁部２８が自分で芯材４に圧着するようなものにする。 The switching part 27 is a boundary part between the sandwich seal part 26 and the self-seal part 23, and is set, for example, at the positions of both side parts 37 of the instrument panel 1. In the switching portion 27, the edge portion 28 of the skin material 5 comes out of the recess 21 of the core material 4 constituting the self-sealing portion 23 and is not overlapped in parallel with the surface 24 of the core material 4. The mold is clamped by the foaming molds 11 and 12. Therefore, the crimping seal portion 29 is configured such that the edge portion 28 of the skin material 5 is crimped to the core material 4 by itself using the flexibility of the skin material 5 itself.
（２）図７に示すように、圧着シール部２９は、表皮材５の縁部２８の（表皮材５の意匠面などに対する）屈曲角度４１を、自己シール部２３の縁部２２の屈曲角度３２よりも大きくするようにしても良い（屈曲角度４１＞屈曲角度３２）。 (2) As shown in FIG. 7, the crimping seal portion 29 has a bending angle 41 (with respect to the design surface of the skin material 5) of the edge portion 28 of the skin material 5 and a bending angle of the edge portion 22 of the self-sealing portion 23. It may be made larger than 32 (bending angle 41> bending angle 32).
ここで、圧着シール部２９では、表皮材５の縁部２８は、型締めした時に芯材４（の面２４）に当たって自己シール部２３の縁部２２の屈曲角度３２とほぼ同じになるように、自己シール部２３の縁部２２の屈曲角度３２よりも大きい屈曲角度４１に設定するのが好ましい。 Here, in the crimping seal portion 29, the edge portion 28 of the skin material 5 hits the core material 4 (surface 24) when the mold is clamped so that the bending angle 32 of the edge portion 22 of the self-sealing portion 23 is substantially the same. The bending angle 41 is preferably set to be larger than the bending angle 32 of the edge portion 22 of the self-sealing portion 23.
（３）圧着シール部２９は、表皮材５の縁部２８を他の部分よりも厚肉（肉厚５１）にすることができる。
また、圧着シール部２９は、表皮材５の縁部２８を芯材４と干渉する長さ５２を有するものとすることができる。
または、図８に示すように、芯材４と干渉する方向へ延びる干渉部５３を有するようにしても良い。
(3) The crimping seal portion 29 can make the edge portion 28 of the skin material 5 thicker (thickness 51) than other portions.
In addition, the pressure-bonding seal portion 29 may have a length 52 that interferes with the edge portion 28 of the skin material 5 with the core material 4.
Or you may make it have the interference part 53 extended in the direction which interferes with the core material 4, as shown in FIG.
ここで、圧着シール部２９では、表皮材５の縁部２８は、自己シール部２３の縁部２２と同じかそれよりも厚肉にするのが好ましい。圧着シール部２９では、表皮材５の縁部２８は、自己シール部２３の縁部２２と同じかそれよりも長くするのが好ましい。 Here, in the crimping seal portion 29, the edge portion 28 of the skin material 5 is preferably the same as or thicker than the edge portion 22 of the self-sealing portion 23. In the crimping seal portion 29, the edge portion 28 of the skin material 5 is preferably the same as or longer than the edge portion 22 of the self-sealing portion 23.
干渉部５３は、圧着シール部２９の縁部２８の先端部を、芯材４へ向けて屈曲したようなものとすることができる。干渉部５３は、型締めする前の状態で芯材４と干渉するような長さや角度に形成する。 The interference part 53 can be such that the tip of the edge part 28 of the pressure-bonding seal part 29 is bent toward the core member 4. The interference part 53 is formed in such a length and angle that it interferes with the core material 4 in a state before clamping.
なお、上記した（２）と（３）の構成は適宜組み合わせることができる。こうして成形した発泡成形品３は、図９および、図１０〜図１２のようなものとなる。なお、発泡成形品３については後述する。 Note that the above configurations (2) and (3) can be combined as appropriate. The foamed molded article 3 thus molded is as shown in FIG. 9 and FIGS. 10 to 12. The foam molded product 3 will be described later.
（４）図１３、図１４に示すように、自己シール部２３における、芯材４の凹部２１の内周壁６１、または、表皮材５の縁部２２に対し、凹部２１の底部６２に連通する部分的な溝部６３または切欠部６４の少なくとも一方を設けても良い。
そして、発泡層６を成形する際に芯材４と表皮材５との間に発生したガス６５を、部分的な溝部６３または切欠部６４を通して凹部２１の底部６２へ逃がすようにしても良い。
そして、凹部２１の底部６２から（隣接する）圧着シール部２９の位置へガス６５を導いて、圧着シール部２９または挟着シール部２６の位置から外部へガス６５を抜くようにしても良い。
(4) As shown in FIGS. 13 and 14, the self-sealing portion 23 communicates with the inner peripheral wall 61 of the concave portion 21 of the core material 4 or the edge portion 22 of the skin material 5 with the bottom portion 62 of the concave portion 21. At least one of the partial groove part 63 or the notch part 64 may be provided.
Then, the gas 65 generated between the core material 4 and the skin material 5 when the foamed layer 6 is molded may be allowed to escape to the bottom portion 62 of the recess 21 through the partial groove portion 63 or the notch portion 64.
Then, the gas 65 may be guided from the bottom 62 of the concave portion 21 to the position of the (adjacent) pressure-bonding seal portion 29 so that the gas 65 is extracted from the position of the pressure-bonding seal portion 29 or the sandwiching seal portion 26 to the outside.
ここで、芯材４と表皮材５との間の成形空間１３には、発泡液１４の発泡によるガス６５が溜まるおそれがある。そして、このガス６５を抜かないままにすると、発泡層６が成形空間１３の隅々にまで行き渡らなくなるため成形不良の原因になる。 Here, in the molding space 13 between the core material 4 and the skin material 5, there is a possibility that the gas 65 due to the foaming of the foaming liquid 14 is accumulated. If the gas 65 is not removed, the foamed layer 6 does not reach every corner of the molding space 13 and causes molding defects.
そこで、ガス抜きが必要になるが、この実施例では、圧着シール部２９かまたはシール部７でガス抜きを行うようにする。 Therefore, although it is necessary to vent the gas, in this embodiment, the venting is performed by the pressure-bonding seal portion 29 or the seal portion 7.
そのために、溝部６３は、芯材４の凹部２１の内周壁６１に対して設けるようにする。また、切欠部６４は、表皮材５の縁部２８（の先端部）に対して設けるようにする。溝部６３と切欠部６４は、どちらか一方または両方に設けるようにする。溝部６３や切欠部６４は、芯材４の一部が露出するインストルメントパネル１の前縁側部分３１の位置に設けるのが好ましい。 Therefore, the groove part 63 is provided with respect to the inner peripheral wall 61 of the recessed part 21 of the core material 4. Further, the notch portion 64 is provided with respect to the edge portion 28 (the front end portion) of the skin material 5. The groove part 63 and the notch part 64 are provided in either one or both. It is preferable to provide the groove part 63 and the notch part 64 in the position of the front edge side part 31 of the instrument panel 1 from which a part of core material 4 is exposed.
圧着シール部２９の位置でガス抜きを行う場合には、例えば、切替部分２７の位置の一部に、芯材４に自己シール部２３の凹部２１よりも深い凹所６６（図９）を部分的に設けるようにして、凹所６６からガス抜きを行わせるようにしても良い。 When degassing is performed at the position of the pressure-bonding seal portion 29, for example, a recess 66 (FIG. 9) deeper than the recess 21 of the self-sealing portion 23 is partially formed in the core material 4 at a part of the position of the switching portion 27. Therefore, the gas may be vented from the recess 66.
また、シール部７の位置でガス抜きを行う場合には、芯材４に適宜ガス抜き穴を設けるのが好ましい。この実施例では、シール力が最も弱くなり易い圧着シール部２９の位置で積極的にガス抜きを行うようにしている。 Further, when degassing is performed at the position of the seal portion 7, it is preferable to provide a degassing hole in the core material 4 as appropriate. In this embodiment, degassing is positively performed at the position of the pressure-bonding seal portion 29 where the sealing force tends to be the weakest.
次に、上記した発泡成形方法によって成形される発泡成形品３について説明する。 Next, the foam molded product 3 molded by the above-described foam molding method will be described.
発泡成形品３は、既に上記したように、芯材４と表皮材５と発泡層６とを有すると共に、発泡層６を、芯材４と表皮材５とをシール部７でシールした部分の内側に形成したものである（図２、図９参照）。 As already described above, the foam molded article 3 has the core material 4, the skin material 5, and the foam layer 6, and the foam layer 6 is a portion of the core material 4 and the skin material 5 sealed by the seal portion 7. It is formed inside (see FIG. 2 and FIG. 9).
（５）この実施例の発泡成形品３は、シール部７の一部に、図１０（図５）に示すように、芯材４に設けた凹部２１に表皮材５の縁部２２を収容してなる自己シール部２３を有している。また、シール部７の残りの部分に、図１１（図６）に示すように、芯材４（の面２４）と表皮材５の縁部２５とを発泡成形型１１，１２で挟着してなる挟着シール部２６を有している。
そして、図１２（図７、図８）に示すように、挟着シール部２６と自己シール部２３との間の切替部分２７に、表皮材５の縁部２８を芯材４に圧着させてなる圧着シール部２９を有している。
(5) The foam molded product 3 of this embodiment accommodates the edge portion 22 of the skin material 5 in the concave portion 21 provided in the core material 4 in a part of the seal portion 7 as shown in FIG. 10 (FIG. 5). The self-sealing portion 23 is formed. Further, as shown in FIG. 11 (FIG. 6), the core material 4 (surface 24) and the edge portion 25 of the skin material 5 are sandwiched between the remaining portions of the seal portion 7 by the foaming molds 11 and 12. The sandwiching seal portion 26 is formed.
Then, as shown in FIG. 12 (FIGS. 7 and 8), the edge portion 28 of the skin material 5 is crimped to the core material 4 at the switching portion 27 between the sandwich seal portion 26 and the self-sealing portion 23. The pressure-bonding seal portion 29 is provided.
（６）圧着シール部２９は、（成形前の状態で）表皮材５の縁部２８の屈曲角度４１が、自己シール部２３の縁部２２の屈曲角度３２よりも大きくなるようにしても良い。 (6) The crimp seal portion 29 may be configured such that the bending angle 41 of the edge portion 28 of the skin material 5 is larger than the bending angle 32 of the edge portion 22 of the self-sealing portion 23 (in a state before molding). .
（７）圧着シール部２９は、表皮材５の縁部２８が他の部分よりも厚肉になっていると共に、
圧着シール部２９は、表皮材５の縁部２８が芯材４と干渉する長さ５２を有しているか、または、芯材４と干渉する方向へ延びる干渉部５３を有するようにしても良い。
(7) The crimp seal portion 29 is such that the edge portion 28 of the skin material 5 is thicker than other portions,
The crimping seal portion 29 may have a length 52 at which the edge portion 28 of the skin material 5 interferes with the core material 4, or may have an interference portion 53 that extends in a direction that interferes with the core material 4. .
（８）自己シール部２３は、芯材４の凹部２１の内周壁６１、または、表皮材５の縁部２２に対し、凹部２１の底部６２に連通する部分的な溝部６３または切欠部６４の少なくとも一方を有するようにしても良い。 (8) The self-sealing portion 23 is formed of a partial groove portion 63 or a notch portion 64 communicating with the inner peripheral wall 61 of the concave portion 21 of the core material 4 or the edge portion 22 of the skin material 5 and the bottom portion 62 of the concave portion 21. You may make it have at least one.
＜作用効果＞この実施例によれば、以下のような作用効果を得ることができる。 <Effect> According to this embodiment, the following effects can be obtained.
（作用効果１）自己シール部２３と挟着シール部２６との切替部分２７を圧着シール部２９とした。これにより、圧着シール部２９は、型締めによって表皮材５の縁部２８が芯材４の面２４に自ら圧着してシールするようにしたものであるため、切替部分２７からの発泡層６のハミ出しを抑制できるので、切替部分２７にシールテープを貼ってシールするなどの手間をなくすことができる。 (Effect 1) The switching portion 27 between the self-sealing portion 23 and the sandwiching sealing portion 26 is used as a pressure-bonding sealing portion 29. Thereby, the crimping seal portion 29 is such that the edge portion 28 of the skin material 5 is pressure-bonded and sealed to the surface 24 of the core material 4 by clamping, so that the foam layer 6 from the switching portion 27 is sealed. Since sticking out can be suppressed, it is possible to eliminate the trouble of sticking a sealing tape on the switching portion 27 for sealing.
（作用効果２）圧着シール部２９の表皮材５の縁部２８の屈曲角度４１を、自己シール部２３の縁部２２の屈曲角度３２よりも大きくしても良い。これにより、圧着シール部２９で表皮材５の縁部２８を確実に芯材４に圧着させることができる。 (Operation Effect 2) The bending angle 41 of the edge portion 28 of the skin material 5 of the pressure-bonding seal portion 29 may be larger than the bending angle 32 of the edge portion 22 of the self-sealing portion 23. Thereby, the edge part 28 of the skin material 5 can be reliably crimped | bonded to the core material 4 by the crimping | compression-bonding seal | sticker part 29. FIG.
（作用効果３）圧着シール部２９の表皮材５の縁部２８を厚肉にしたり、芯材４と干渉する長さ５２を有するものとしたり、芯材４と干渉する方向へ延びる干渉部５３を有するものとしたりしても良い。これらにより、圧着シール部２９における表皮材５の縁部２８を芯材４に対して、より確実に圧着して、シール性を確保・向上することができる。 (Effect 3) The edge portion 28 of the skin material 5 of the pressure-bonding seal portion 29 is thickened, has a length 52 that interferes with the core material 4, or extends in a direction that interferes with the core material 4. May be included. Accordingly, the edge portion 28 of the skin material 5 in the pressure-bonding seal portion 29 can be more reliably pressure-bonded to the core material 4 to ensure and improve the sealing performance.
（作用効果４）自己シール部２３における芯材４の凹部２１の内周壁６１または表皮材５の縁部２２に、溝部６３または切欠部６４を設けて、溝部６３や切欠部６４を介してガス６５を凹部２１の底部６２へ導くようにしても良い。これにより、自己シール部２３の凹部２１を有効利用して圧着シール部２９や挟着シール部２６などからガス抜きを行うことができる。 (Effect 4) The groove part 63 or the notch part 64 is provided in the inner peripheral wall 61 of the recessed part 21 of the core material 4 in the self-sealing part 23 or the edge part 22 of the skin material 5, and gas is passed through the groove part 63 and the notch part 64. 65 may be guided to the bottom 62 of the recess 21. Thereby, gas can be vented from the pressure-bonding seal portion 29, the sandwiching seal portion 26, and the like by effectively using the concave portion 21 of the self-sealing portion 23.
３ 発泡成形品
４ 芯材
５ 表皮材
６ 発泡層
７ シール部
１１ 発泡成形型
１２ 発泡成形型
２１ 凹部
２２ 縁部
２３ 自己シール部
２５ 縁部
２６ 挟着シール部
２７ 切替部分
２８ 縁部
２９ 圧着シール部
３２ 屈曲角度
４１ 屈曲角度
５１ 肉厚
５２ 長さ
５３ 干渉部
６１ 内周壁
６２ 底部
６３ 溝部
６４ 切欠部
６５ ガス
DESCRIPTION OF SYMBOLS 3 Foam molded product 4 Core material 5 Skin material 6 Foam layer 7 Seal part 11 Foam mold 12 Foam mold 21 Recess 22 Edge 23 Self seal part 25 Edge 26 Clamping seal part 27 Switching part 28 Edge 29 Crimp seal Part 32 Bending angle 41 Bending angle 51 Thickness 52 Length 53 Interference part 61 Inner peripheral wall 62 Bottom part 63 Groove part 64 Notch part 65 Gas
Claims (8)
前記シール部の一部を、前記芯材に設けた凹部に前記表皮材の縁部を収容してなる自己シール部とし、前記シール部の残りの部分を、前記芯材と前記表皮材の縁部とを発泡成形型で挟着する挟着シール部とすると共に、
該挟着シール部と前記自己シール部との間の切替部分は、前記表皮材の縁部を前記芯材に圧着させる圧着シール部とすることを特徴とする発泡成形方法。 In the foam molding method of sealing the core material and the skin material with the seal portion, and molding the foam layer inside the seal portion,
A part of the seal part is a self-seal part formed by accommodating an edge part of the skin material in a recess provided in the core material, and the remaining part of the seal part is an edge between the core material and the skin material. And a sandwich seal part to sandwich the part with a foam mold,
The foam molding method, wherein the switching portion between the sandwich seal portion and the self-sealing portion is a pressure-bonding seal portion that presses the edge of the skin material against the core material.
前記圧着シール部は、前記表皮材の縁部の屈曲角度を、前記自己シール部の縁部の屈曲角度よりも大きくすることを特徴とする発泡成形方法。 The foam molding method according to claim 1,
The foaming molding method, wherein the pressure-bonding seal portion makes the bending angle of the edge portion of the skin material larger than the bending angle of the edge portion of the self-sealing portion.
前記圧着シール部は、前記表皮材の縁部を他の部分よりも厚肉にすると共に、
前記圧着シール部は、前記表皮材の縁部を前記芯材と干渉する長さを有するか、または、前記芯材と干渉する方向へ延びる干渉部を有することを特徴とする発泡成形方法。 The foam molding method according to claim 1 or 2,
The crimp seal part is thicker than the other part at the edge of the skin material,
The pressure-bonding sealing portion has a length that interferes with an edge of the skin material with the core material, or has an interference portion that extends in a direction of interference with the core material.
前記自己シール部における、前記芯材の前記凹部の内周壁、または、前記表皮材の縁部に対し、前記凹部の底部に連通する部分的な溝部または切欠部の少なくとも一方を設けて、
前記発泡層を成形する際に前記芯材と前記表皮材との間に発生したガスを、部分的な前記溝部または前記切欠部を通して前記凹部の底部へ逃し、
該凹部の底部から前記圧着シール部の位置へ導いて、該圧着シール部または前記挟着シール部の位置から外部へガスを抜くことを特徴とする発泡成形方法。 A foam molding method according to any one of claims 1 to 3,
In the self-sealing portion, with respect to the inner peripheral wall of the concave portion of the core material or the edge portion of the skin material, at least one of a partial groove portion or a notch portion communicating with the bottom portion of the concave portion is provided,
The gas generated between the core material and the skin material when the foam layer is molded is released to the bottom of the recess through the partial groove or notch,
A foam molding method characterized in that gas is discharged from the bottom of the concave portion to the position of the pressure-bonding seal portion and from the position of the pressure-bonding seal portion or the sandwich seal portion.
前記シール部の一部に、前記芯材に設けた凹部に前記表皮材の縁部を収容してなる自己シール部を有し、前記シール部の残りの部分に、前記芯材と前記表皮材の縁部とを発泡成形型で挟着してなる挟着シール部を有すると共に、
該挟着シール部と前記自己シール部との間の切替部分に、前記表皮材の縁部を前記芯材に圧着させてなる圧着シール部を有することを特徴とする発泡成形品。 In a foam molded article having a core material, a skin material, and a foam layer, and forming the foam layer inside a portion where the core material and the skin material are sealed by a seal portion,
A part of the seal portion has a self-sealing portion that accommodates an edge portion of the skin material in a recess provided in the core material, and the core material and the skin material are formed in the remaining portion of the seal portion. And having a sandwich seal part formed by sandwiching the edge part of the mold with a foaming mold,
A foam-molded article comprising a pressure-bonding seal portion formed by pressing an edge portion of the skin material to the core material at a switching portion between the sandwich seal portion and the self-sealing portion.
前記圧着シール部は、前記表皮材の縁部の屈曲角度が、前記自己シール部の縁部の屈曲角度よりも大きくなっていることを特徴とする発泡成形品。 The foam molded product according to claim 5,
The pressure-bonded seal part is a foamed molded product, wherein the bending angle of the edge of the skin material is larger than the bending angle of the edge of the self-sealing part.
前記圧着シール部は、前記表皮材の縁部が他の部分よりも厚肉になっていると共に、
前記圧着シール部は、前記表皮材の縁部が前記芯材と干渉する長さを有しているか、または、前記芯材と干渉する方向へ延びる干渉部を有していることを特徴とする発泡成形品。 The foamed molded product according to claim 5 or 6,
The crimp seal part has an edge of the skin material that is thicker than other parts,
The pressure-bonding seal portion has a length in which an edge portion of the skin material interferes with the core material, or an interference portion that extends in a direction of interference with the core material. Foam molded product.
前記自己シール部は、前記芯材の前記凹部の内周壁、または、前記表皮材の縁部に対し、前記凹部の底部に連通する部分的な溝部または切欠部の少なくとも一方を有していることを特徴とする発泡成形品。 The foam molded article according to any one of claims 5 to 7,
The self-sealing part has at least one of a partial groove part or a notch part communicating with an inner peripheral wall of the concave part of the core material or an edge part of the skin material to a bottom part of the concave part. Foam molded product characterized by
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| CN201880037273.XA CN110709221B (en) | 2017-06-08 | 2018-05-21 | Foam molding method, foam molded article, and method for producing same |
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| JP7112891B2 (en) | 2018-06-08 | 2022-08-04 | しげる工業株式会社 | METHOD FOR MANUFACTURING PADDED VEHICLE INTERIOR |
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| JP7112891B2 (en) | 2018-06-08 | 2022-08-04 | しげる工業株式会社 | METHOD FOR MANUFACTURING PADDED VEHICLE INTERIOR |
| CN113977843A (en) * | 2021-11-11 | 2022-01-28 | 张家港力勤机械有限公司 | Forming processing equipment for polyurethane plate |
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