JP4523955B2 - Vacuum forming machine for interior products - Google Patents

Vacuum forming machine for interior products Download PDF

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JP4523955B2
JP4523955B2 JP2007185105A JP2007185105A JP4523955B2 JP 4523955 B2 JP4523955 B2 JP 4523955B2 JP 2007185105 A JP2007185105 A JP 2007185105A JP 2007185105 A JP2007185105 A JP 2007185105A JP 4523955 B2 JP4523955 B2 JP 4523955B2
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mold
vacuum suction
substrate
base material
forming machine
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JP2009018556A (en
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義弘 阿部
和良 香川
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Toyota Motor East Japan Inc
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Kanto Auto Works Ltd
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Description

本発明は、表皮材用及び基材用真空吸引型を備えると共に、型締めして両側から真空吸引することにより、扁平状表皮材の加熱軟化させられた発泡層を基材用真空吸引型にセットされた基材に熱溶融した接着剤で接着すると共に、表皮材を表皮材用真空吸引型の型面に沿って賦形するようになった内装品の真空成形機に関するものである。   The present invention includes a vacuum suction mold for a skin material and a base material, and by clamping the mold and vacuum suction from both sides, the heat-softened foam layer of the flat skin material is made into a vacuum suction mold for a base material. The present invention relates to a vacuum molding machine for an interior product which is bonded to a set base material with a hot-melt adhesive and is shaped along the surface of a vacuum suction mold for the skin material.

本願出願人は、この種の真空成形機として、特許文献１により、吸気路を分散形成された基材がセットされる基材用凸状真空吸引型と、表皮全域の表面形状に対応する型面を有する表皮材用凹状真空吸引型と対向状態に備え、表面に表皮が接合され、裏面に熱溶融性の接着剤が塗布された熱可塑性の発泡層付きの扁平状表皮材が、基材用凸状真空吸引型にセットされた基材に加温処理されてセットされた状態で、型締めして表皮材用凹状真空吸引型側及び基材用凸状真空吸引型側から真空吸引することにより、軟化させられた発泡層を基材に熱溶融した接着剤で接着すると共に、表皮材を表皮材用凹状真空吸引型の型面に沿って賦形するようになった内装品の真空成形機を提案した。   As a vacuum forming machine of this type, the applicant of the present application discloses, as disclosed in Patent Document 1, a convex vacuum suction mold for a base material on which a base material in which an intake passage is dispersedly formed is set, and a mold corresponding to the surface shape of the entire skin. A flat skin material with a thermoplastic foam layer in which the skin is bonded to the front surface and a hot-melt adhesive is applied to the back surface, in preparation for facing the concave vacuum suction mold for the skin material having a surface. In a state where the substrate is set to a convex vacuum suction mold for heating, the mold is clamped and vacuum suction is performed from the concave vacuum suction mold side for the skin material and the convex vacuum suction mold side for the substrate. By adhering the softened foam layer to the base material with a hot-melt adhesive, the interior material vacuum is formed along the surface of the concave vacuum suction mold for the skin material. A molding machine was proposed.

即ち、図５に示すように、例えば自動車のインストルメントパネルを製作するために、基材５がセットされる基材用凸状真空吸引型８と、表皮全域の表面形状に対応する型面を有し、かつ吸引口７ａで真空吸引される表皮材用凹状真空吸引型７とが対向し、表面に表皮１１が接合され、裏面に熱溶融性の接着剤１３が塗布された熱可塑性の発泡層１２付きの扁平状表皮材１０が加温処理されて、基材用凸状真空吸引型８にセットされた分散吸気路付きの基材５にセットされた状態で型締めして両側から真空吸引し、軟化させられた発泡層１２を分散吸気路を通した吸引することにより密着させた基材５に熱溶融した接着剤１３で加圧状態で接着すると共に、表皮材１０を表皮材用凹状真空吸引型７の型面に沿って賦形される。尚、図５において、製作されたインストルメントパネルは、車両への組み付け状態では、図で見て反時計方向へ４５°近く回転させた位置を占める。   That is, as shown in FIG. 5, for example, in order to manufacture an instrument panel of an automobile, a convex vacuum suction die 8 for a base on which the base 5 is set and a mold surface corresponding to the surface shape of the entire skin are provided. Thermoplastic foam having a skin material concave vacuum suction mold 7 facing the vacuum suction mold 7 having vacuum suction at the suction port 7a, having a skin 11 bonded to the front surface, and a hot-melt adhesive 13 applied to the back surface. The flat skin material 10 with the layer 12 is heated, and the mold is clamped in a state where it is set on the base material 5 with the distributed intake passage set in the convex vacuum suction die 8 for base material, and vacuum is applied from both sides. The foamed layer 12 that has been sucked and softened is adhered to the base material 5 that has been brought into close contact with the base material 5 by sucking it through the dispersion air intake passage, and the skin material 10 is used for the skin material. It is shaped along the mold surface of the concave vacuum suction mold 7. In FIG. 5, the manufactured instrument panel occupies a position rotated approximately 45 ° counterclockwise as viewed in the figure when assembled to the vehicle.

このような成形加工に際して、表皮材１０の端末部が直接接触する基材用凸状真空吸引型８の型面領域Ａ、Ｅを含む金型周辺領域に離型材を塗布するのに加えて、基材５に例えばメータクラスタ部取付け用の開口部５ａが形成されて、その基材表面領域Ｃ、Ｄを含む周辺領域に、取付けのために表皮材１０を接着させない場合、開口部５ａに対応する型面領域Ｂにも離型材を塗布し、基材表面領域Ｃ、Ｄ等にテープ等でカバーしてマスキングを行っている。
特開２００５−１２５７３５ In such a molding process, in addition to applying the mold release material to the mold peripheral area including the mold surface areas A and E of the convex vacuum suction mold 8 for the base material with which the terminal portion of the skin material 10 is in direct contact, Corresponding to the opening 5a when, for example, an opening 5a for attaching the meter cluster portion is formed in the base material 5 and the skin material 10 is not adhered to the peripheral region including the base material surface regions C and D for attachment. A mold release material is also applied to the mold surface area B to be masked, and the substrate surface areas C and D are covered with a tape or the like for masking.
JP 2005-125735 A

したがって、このような発泡層付き表皮材を基材に熱溶融性の接着剤で接着する内装品の成形加工に際して、表皮材を基材側に接着させたくない領域がある場合、離型材の塗布或はマスキング等の前処理を要し、さらにこれらに起因する金型の汚れを解消するために定期的な清掃も必要であった。   Therefore, when molding an interior product in which such a skin material with a foam layer is bonded to a base material with a hot-melt adhesive, if there is a region where the skin material is not desired to be bonded to the base material side, a release material is applied. Or, pre-treatment such as masking is required, and in addition, periodic cleaning is necessary to eliminate mold contamination caused by these.

本発明は、このような点に鑑みて、表皮材の熱溶融性接着剤が塗布された発泡層を基材に接着させる際に、接着させたくない基材領域、基材開口部により露出される型面領域或は金型周辺の発泡層が直接セットされる型面領域等に対する非着用の前処理を不要にし得る内装品の真空成形機を提供することを目的とする。   In view of such a point, the present invention is exposed by a base material region and a base material opening that are not desired to be adhered when a foam layer coated with a hot melt adhesive of a skin material is adhered to the base material. It is an object of the present invention to provide a vacuum molding machine for interior parts that can eliminate the need for non-wearing pretreatment for a mold surface area or a mold surface area where a foam layer around a mold is directly set.

本発明は、この目的を達成するために、請求項１により、吸気路を分散形成された基材がセットされる基材用凸状真空吸引型と、表皮全域の表面形状に対応する型面を有する表皮材用凹状真空吸引型とを対向状態に備え、表面に表皮が接合され、裏面に熱溶融性の接着剤が塗布された熱可塑性の発泡層付きの扁平状表皮材が、基材用凸状真空吸引型にセットされた基材に加温処理されてセットされた状態で、型締めして表皮材用凹状真空吸引型側及び基材用凸状真空吸引型側から真空吸引することにより、軟化させられた発泡層を基材に熱溶融した接着剤で接着すると共に、表皮材を表皮材用凹状真空吸引型の型面に沿って賦形するようになった内装品の真空成形機において、真空吸引されても発泡層を接着させない非着基材領域もしくは非着型面領域を占める基材用凸状真空吸引型部分に、発泡層を熱溶融した接着剤で接着させない程度に非着基材領域裏面の型面もしくは非着型面領域を冷却する冷却機構が組込まれていることを特徴とする。   In order to achieve this object, the present invention provides, according to claim 1, a convex vacuum suction mold for a substrate on which a substrate with a distributed intake passage is set, and a mold surface corresponding to the surface shape of the entire skin. A flat skin material with a thermoplastic foam layer, which is provided with a concave vacuum suction mold for a skin material having a facing state, the skin is bonded to the front surface, and a hot-melt adhesive is applied to the back surface, In a state where the substrate is set to a convex vacuum suction mold for heating, the mold is clamped and vacuum suction is performed from the concave vacuum suction mold side for the skin material and the convex vacuum suction mold side for the substrate. By adhering the softened foam layer to the base material with a hot-melt adhesive, the interior material vacuum is formed along the surface of the concave vacuum suction mold for the skin material. In a molding machine, the non-adherent substrate region or non-adhesive substrate area that does not adhere the foamed layer even if vacuum suction is applied There is a cooling mechanism that cools the mold surface on the back surface of the non-adhering substrate region or the non-adhesive surface region to the extent that the foamed layer is not adhered to the convex vacuum suction mold part for the substrate that occupies the mold surface region with a hot-melt adhesive. It is built in.

冷却機構による非着基材領域裏面の型面もしくは非着型面領域の冷却により、型締めにより密着した発泡層に介在する熱溶融した接着剤は、その温度低下により本来の接着力を失う。   Due to the cooling of the mold surface on the back surface of the non-bonding substrate region or the non-molding surface region by the cooling mechanism, the hot-melt adhesive interposed in the foamed layer adhered by the mold clamping loses its original adhesive force due to its temperature drop.

請求項１の発明によれば、基材側の金型において、表皮材の熱溶融性の接着剤が塗布された熱可塑性の発泡層を接着させたくない基材又は金型面に対応する金型部分に、冷却機構を組込むことにより、その非着基材領域をマスキング材でカバーしたり、非着型面領域に離型材を塗布する前処理が不要になり、これらに伴う汚れに対する定期的な金型の清掃も不要になる。請求項２の発明によれば冷却機構が基材用凸状真空吸引型への組込み式として容易に製作可能とり、その際請求項３の発明によれば冷媒を循環させるパイプを内蔵する簡単な構成で、その周囲の金属製の中実体で冷温を効率良く金型面に伝導させ得、請求項４の発明によれば金属製の中実状入れ子にフィンを形成して簡単に構成され、請求項５の発明によれば熱損失を抑制して効率良く冷却できる。
される。 According to the invention of claim 1, in the mold on the base material side, the mold corresponding to the base material or the mold surface where it is not desired to adhere the thermoplastic foam layer coated with the hot-melt adhesive of the skin material. By incorporating a cooling mechanism into the mold part, it is no longer necessary to cover the non-bonding substrate area with a masking material or to apply a release material to the non-molding surface area. No need to clean molds. According to the invention of claim 2, the cooling mechanism can be easily manufactured as a built-in type into the convex vacuum suction mold for the substrate, and according to the invention of claim 3, a simple pipe having a built-in pipe for circulating the refrigerant is provided. With the configuration, the metal body surrounding it can efficiently conduct the cold temperature to the mold surface, and according to the invention of claim 4, it is simply configured by forming fins in a solid metal insert. According to invention of claim | item 5, it can cool efficiently, suppressing a heat loss.
Is done.

図１乃至図３を基に本発明の実施の形態による内装品の真空成形機を説明する。尚、前述の図５による成形機と同一もしくは同等部分は同一符号を用いて説明する。真空吸引用されるように多孔性である表皮材用凹状真空吸引型７に対向する基材用凸状真空吸引型１８は、前述の基材用凸状真空吸引型８に相当し、同一型面形状に形成されると共に、この金型には、発泡層１２を接着させない領域に対応する型面を冷却する冷却機構２０が組込まれている。   An interior product vacuum forming machine according to an embodiment of the present invention will be described with reference to FIGS. The same or equivalent parts as those of the molding machine shown in FIG. 5 will be described using the same reference numerals. The convex vacuum suction mold 18 for the base material facing the concave vacuum suction mold 7 for the skin material that is porous so as to be used for vacuum suction corresponds to the convex vacuum suction mold 8 for the base material described above, and is the same type. A cooling mechanism 20 for cooling the mold surface corresponding to a region where the foam layer 12 is not bonded is incorporated in the mold.

基材用凸状真空吸引型１８には、保温装置から温水を供給される保温用パイプ１９が内蔵させられて、周知のように、型面を接着剤の所要の温度特性に対応して室温よりも高く設定するようになっている。また、この金型は、セットされた基材５の分散形成された吸気路（図示せず）に連通し、かつ真空ポンプが接続するパイプ状吸引路（図示せず）を備えることにより、型締め状態で発泡層１２を基材５側にその分散された吸気路を通して真空吸引して密着させるようになっている。   The substrate-use convex vacuum suction mold 18 incorporates a heat retaining pipe 19 to which hot water is supplied from a heat retaining device, and as is well known, the mold surface corresponds to the required temperature characteristics of the adhesive at room temperature. It is supposed to set higher than. Further, this mold is provided with a pipe-like suction path (not shown) connected to a suction path (not shown) in which the set base material 5 is dispersedly formed and connected to a vacuum pump. In the tightened state, the foamed layer 12 is brought into close contact with the substrate 5 side by vacuum suction through the dispersed intake passages.

図２及び図３に示すように、基材用凸状真空吸引型１８には、表皮材１０の端末領域が直接接触するために従来離型材が塗布されていた前述の奥行方向に延在する型面領域Ａと、基材５のメータクラスタ部取付け用の開口部５ａに対応する型面領域Ｂと、その四方の表皮材１０を接着させない基材表面領域Ｃ、Ｄを含む周辺裏面の型面領域を含んで、配管を行い得る程度の深さの切欠部１８ａが形成されると共に、この切欠部に、パイプ２２が埋め込まれた例えばアルミニウムの良熱伝導性の金属製のインゴットによる略Ｌ字形の中実状の入れ子２１が、例えば合成樹脂製の断熱層２３を介して組込まれて、これらの領域Ａ〜Ｄ等を発泡層１２に対する非着領域にする冷却機構２０を構成している。   As shown in FIG. 2 and FIG. 3, the convex vacuum suction die 18 for the base material extends in the aforementioned depth direction in which the release material is conventionally applied because the end region of the skin material 10 is in direct contact. Peripheral back surface mold including a mold surface area A, a mold surface area B corresponding to the opening 5a for attaching the meter cluster portion of the base material 5, and base material surface areas C and D to which the four-sided skin material 10 is not bonded. A notch 18a having a depth sufficient to allow piping is formed including the surface region, and the pipe 22 is embedded in the notch, for example, an approximately L made of an ingot made of a metal having good heat conductivity such as aluminum. A solid insert 21 having a solid shape is incorporated through a heat insulating layer 23 made of, for example, a synthetic resin to constitute a cooling mechanism 20 that makes these regions A to D and the like non-attached regions to the foamed layer 12.

即ち、入れ子２１には、発泡層１２が熱溶融した接着剤１３で接着され得ない程度に基材表面領域Ｃ及び型面領域Ａを冷却するように、折返して配管されている３本のパイプ２２が埋め込まれ、その１本が冷却装置の冷媒としての例えば冷水を供給する入口側パイプ２２ａとして導出されると共に、他の１本が領域Ｂ及び領域Ｄを冷却するように、上方へ延びて上下及び左右に折返して開口部５ａ用の１層の配管部２２ｃを構成し、さらに出口側パイプ２２ｂとして導出されている。これにより、冷却装置から入口側パイプ２２ａで冷水が供給され、周囲の中実体を冷却しつつ出口側パイプ２２ｂから帰還させ、冷水が循環されるようになっている。冷水の温度は、接着剤１３の接着に要する下限温度よりも前述の非着領域Ａ〜Ｄを十分低い温度に冷却し得るように、アルミ製入れ子２１による熱損失を考慮してさらに例えば数℃低く設定される。   That is, the pipe 21 is folded and piped in the nest 21 so as to cool the substrate surface area C and the mold surface area A to such an extent that the foam layer 12 cannot be bonded with the hot-melt adhesive 13. 22 is embedded, one of which is led out as an inlet side pipe 22a for supplying, for example, cold water as a refrigerant of the cooling device, and the other one extends upward so as to cool the region B and the region D. It is folded up and down and left and right to form a one-layer piping portion 22c for the opening 5a, and is further led out as an outlet side pipe 22b. As a result, cold water is supplied from the cooling device through the inlet side pipe 22a and returned from the outlet side pipe 22b while cooling the surrounding solid body so that the cold water is circulated. The temperature of the cold water is, for example, several degrees C. in consideration of heat loss due to the aluminum insert 21 so that the non-adhesion regions A to D can be cooled to a temperature sufficiently lower than the lower limit temperature required for bonding the adhesive 13. Set low.

このように構成された内装品の真空成形機を用いたインストルメントパネルの製作方法は次の通りである。熱可塑性の表皮材１０は、例えばＴＰＯ製の表皮１１にＰＰフォーム製の発泡層１２が溶着され、その裏面に熱溶融性のオレフィン系接着剤１３が塗布され、ロール状に巻回されて保管されており、成形に際して所定形状に切断され、扁平状に支持されてヒータで全域を加温処理されている。その温度設定は、発泡層１２を軟化させ、かつ接着剤１３を接着可能に熱溶融させるように数１００℃である。   The manufacturing method of the instrument panel using the vacuum forming machine of the interior product configured as described above is as follows. The thermoplastic skin material 10 is, for example, a foam layer 12 made of PP foam is welded to a skin 11 made of TPO, a hot-melt olefin-based adhesive 13 is applied to the back surface thereof, wound in a roll shape, and stored. It is cut into a predetermined shape at the time of molding, is supported in a flat shape, and the whole area is heated by a heater. The temperature setting is several hundred degrees Celsius so as to soften the foamed layer 12 and heat-melt the adhesive 13 so that it can be bonded.

一方、基材用凸状真空吸引型１８には、対応形状に形成されている基材５がセットされると共に、その発泡層１２を接着させる型面領域は、接着に要する温度例えば３５℃以上であることに対応して、保温用パイプ１９による温水の循環により４０℃程度に保温されている。また、表皮材１０の端末領域が直接接触する前述の型面領域Ａと、開口部５ａの型面領域Ｂと、その周辺の基材表面領域Ｃ、Ｄ等は、パイプ２２による冷水の循環により、断熱層２３による熱絶縁状態で３５℃よりも十分低い例えば２５℃程度に冷却されている。その冷水の温度は、冷却対象の型面領域に対する温度勾配に応じて２５℃よりも僅かに低めに調整されている。表皮材１０の残りの冷却されない端末領域が直接接触する基材用凸状真空吸引型１８の型面領域には、従来通り離型材を塗布する。   On the other hand, the base material 5 formed in a corresponding shape is set in the convex vacuum suction mold 18 for the base material, and the mold surface area to which the foamed layer 12 is bonded is a temperature required for bonding, for example, 35 ° C. or more. Correspondingly, the temperature is kept at about 40 ° C. by the circulation of warm water by the heat insulation pipe 19. Further, the above-described mold surface area A in which the terminal area of the skin material 10 is in direct contact, the mold surface area B of the opening 5a, and the surrounding substrate surface areas C, D, etc. In the thermally insulated state by the heat insulating layer 23, the temperature is cooled to, for example, about 25 ° C., which is sufficiently lower than 35 ° C. The temperature of the cold water is adjusted slightly lower than 25 ° C. according to the temperature gradient with respect to the mold surface area to be cooled. A mold release material is applied to the mold surface area of the convex vacuum suction mold 18 for the base material in which the remaining uncooled terminal area of the skin material 10 is in direct contact.

次いで、ヒータを逃がした表皮材１０を基材５の表面にセットし、表皮材用凹状真空吸引型７及び基材用凸状真空吸引型１８を型締めすると共に、双方の金型から両側に真空吸引を行う。これにより、基材５には真空吸引された発泡層１２がホットメルト型の接着剤１３で密着状態に接着されると共に、表皮１１は、全域にわたり多孔性の表皮材用凹状真空吸引型７の型面７ｂで緊密に吸着され、熱軟化状態の発泡層１２を圧縮もしくは膨張させつつ型面７ｂに沿って賦形され、オールオレフィン３層のインストルメントパネルが製作される。その際、基材用凸状真空吸引型１８側の非着領域Ａ〜Ｄに対して接着剤１３は加温状態にあったために相対的に高温で密着するが、中実の入れ子２１による良好な熱伝導により接着不能の温度に直ちに下降し、したがって発泡層１２の開口部５ａの型面領域Ｂへの接着が回避され、その周辺の基材表面領域Ｃ、Ｄ等への接着も行われず、一方側の表皮材端末部の型面領域Ａへの接着も回避される。   Next, the skin material 10 from which the heater has escaped is set on the surface of the base material 5, the concave vacuum suction mold 7 for the skin material and the convex vacuum suction mold 18 for the base material are clamped, and both molds are moved to both sides. Perform vacuum suction. As a result, the foamed layer 12 vacuum-sucked is adhered to the base material 5 with the hot-melt adhesive 13, and the skin 11 is made of the concave vacuum suction die 7 for a porous skin material over the entire area. It is closely adsorbed on the mold surface 7b and shaped along the mold surface 7b while compressing or expanding the foamed layer 12 in the heat softened state, thereby producing an all-olefin instrument panel. At that time, since the adhesive 13 was in a heated state with respect to the non-adhesion areas A to D on the convex vacuum suction mold 18 side for the base material, the adhesive 13 was in close contact with each other at a relatively high temperature. The temperature immediately drops to a temperature at which adhesion cannot be achieved due to heat conduction, and therefore adhesion of the opening 5a of the foamed layer 12 to the mold surface area B is avoided, and adhesion to the surrounding substrate surface areas C, D, etc. is not performed. Adhesion of the skin material terminal portion on one side to the mold surface region A is also avoided.

型開き後に、真空成形されたインストルメントパネルが脱型され、表皮材１０の端末が切断されると共に、開口部５ａはその周辺の発泡層１２の非着部分を切削することにより開口される。車両への組付け時には、この開口部にメータクラスタ部が装着され、露出状態の周辺の基材部分にクリップ等で固定される。   After the mold opening, the vacuum-formed instrument panel is removed, the end of the skin material 10 is cut, and the opening 5a is opened by cutting the non-attached portion of the surrounding foam layer 12. At the time of assembling to the vehicle, the meter cluster portion is attached to the opening, and is fixed to the exposed base material portion with a clip or the like.

図４は別の実施の形態による冷却機構付きの基材用金型を示すもので、前述の基材用凸状真空吸引型１８において、前述の基材表面領域Ｄを通常の接着領域として加温するように、入れ子２１ａが、前述の入れ子２１に対してその上端面を下方へ後退させられている。また、対応形状の切欠部１８ｂに対して介在するスペーサ２６を入れ子２１ａの底面に分散配列することにより、絶縁層として空間部２４が形成されている。さらに、型面領域Ａ以外の端末部がセットされる３方の周辺型面領域にもパイプ２７が折り返し２本配管して、その金型周辺領域の型面を冷却することにより、入れ子２１ａによる冷却機構と併せて、離型材の塗布を全域にわたり不要にしている。   FIG. 4 shows a substrate mold with a cooling mechanism according to another embodiment. In the above-mentioned convex vacuum suction mold 18 for a substrate, the above-mentioned substrate surface region D is added as a normal adhesion region. The nest 21a is retracted downward with respect to the above-described nest 21 so as to warm. Spacers 24 are formed as insulating layers by dispersing and arranging spacers 26 interposed in the corresponding cutouts 18b on the bottom surface of the insert 21a. Furthermore, two pipes 27 are also folded back in the three peripheral mold surface areas where the terminal portions other than the mold surface area A are set, and the mold surface in the mold peripheral area is cooled, so that the insert 21a In combination with the cooling mechanism, it is not necessary to apply the release material over the entire area.

尚、本発明は、インストルメントパネルの基材に、その車体への取付け用切欠部もしくは開口部を形成したり、或は専ら型面への離型剤の塗布を回避したい場合等にも適用できる。その他、インストルメントパネル以外の３層の表皮材を備えた同様な内装品にも適用可能である。冷却機構の設定温度は、発泡層の裏面に塗布もしくはラミネートされる熱溶融性の接着剤の接着温度特性に応じて適宜設定される。   Note that the present invention is also applicable to a case where a notch or an opening for attachment to the vehicle body is formed on the instrument panel base material, or when it is desired to avoid the application of a release agent exclusively to the mold surface. it can. In addition, it is applicable also to the same interior goods provided with the skin material of 3 layers other than an instrument panel. The set temperature of the cooling mechanism is appropriately set according to the adhesive temperature characteristics of the hot-melt adhesive applied or laminated on the back surface of the foam layer.

さらに、冷却機構としては、冷風を吹き付ける強制空冷式或は自然空冷式に構成することもできる。自然空冷式としては、前述のような入れ子を高熱伝導率の金属、例えばベリウム銅製の中実体として、その外周面における型締め時に表皮材或は基材でカバーされることなく外気に晒される領域にフィンを形成して簡単な構造で構成することもできる。入れ子及び切欠部間には断熱層が介在させるのが好ましい。特に、金型周面から狭い領域を冷却する場合に有効である。   Further, the cooling mechanism can be configured to be a forced air cooling system that blows cold air or a natural air cooling system. As a natural air cooling system, the above-described nesting is a solid body made of a metal having high thermal conductivity, for example, beryllium copper, and is exposed to the outside air without being covered with a skin material or a base material at the time of mold clamping on the outer peripheral surface. It is also possible to form a fin with a simple structure. It is preferable that a heat insulating layer is interposed between the nest and the notch. This is particularly effective when cooling a narrow region from the mold peripheral surface.

本発明の実施の形態による内装品の真空成形機の概略断面図を示す図である。It is a figure which shows the schematic sectional drawing of the vacuum forming machine of the interior goods by embodiment of this invention. 同成形機の冷却機構部分を示す正面図である。It is a front view which shows the cooling mechanism part of the molding machine. 図２のＡ−Ａ線断面図による同成形機の冷却機構部分を示す図である。It is a figure which shows the cooling mechanism part of the molding machine by the AA sectional view taken on the line of FIG. 別の実施の形態による冷却機構の図２のＡ−Ａ線に相当する断面図である。It is sectional drawing equivalent to the AA line of FIG. 2 of the cooling mechanism by another embodiment. 従来の前処理を説明する真空成形機の概略断面図図である。It is a schematic sectional drawing of the vacuum forming machine explaining the conventional pre-processing.

符号の説明Explanation of symbols

５ 基材
５ａ 開口部
７ 表皮材用凹状真空吸引型
１０ 表皮材
１１ 表皮
１２ 発泡層
１３ 接着剤
１８ 基材用凸状真空吸引型
１８ａ、１８ｂ 切欠部
２０ 冷却機構
２１、２１ａ 入れ子
２２、２７ パイプ
２３ 断熱層
２４ 空間部
２６ スペーサ
DESCRIPTION OF SYMBOLS 5 Base material 5a Opening part 7 Concave vacuum suction type for skin material 10 Skin material 11 Skin 12 Foam layer 13 Adhesive 18 Convex vacuum suction type for base material 18a, 18b Notch 20 Cooling mechanism 21, 21a Nesting 22, 27 Pipe 23 Thermal insulation layer 24 Space 26 Spacer

Claims (5)

吸気路を分散形成された基材がセットされる基材用凸状真空吸引型と、表皮全域の表面形状に対応する型面を有する表皮材用凹状真空吸引型とを対向状態に備え、表面に表皮が接合され、裏面に熱溶融性の接着剤が塗布された熱可塑性の発泡層付きの扁平状表皮材が、基材用凸状真空吸引型にセットされた基材に加温処理されてセットされた状態で、型締めして表皮材用凹状真空吸引型側及び基材用凸状真空吸引型側から真空吸引することにより、軟化させられた発泡層を基材に熱溶融した接着剤で接着すると共に、表皮材を表皮材用凹状真空吸引型の型面に沿って賦形するようになった内装品の真空成形機において、
真空吸引されても発泡層を接着させない非着基材領域もしくは非着型面領域を占める基材用凸状真空吸引型部分に、発泡層を熱溶融した接着剤で接着させない程度に前記非着基材領域裏面の型面もしくは前記非着型面領域を冷却する冷却機構が組込まれていることを特徴とする内装品の真空成形機。 The surface is provided with a convex vacuum suction mold for a base material on which a base material in which air intake passages are dispersedly formed is set, and a concave vacuum suction mold for a skin material having a mold surface corresponding to the surface shape of the entire skin. A flat skin material with a thermoplastic foam layer with the outer skin bonded to the back and coated with a hot-melt adhesive on the back surface is heated to a substrate set in a convex vacuum suction mold for the substrate. In this state, the softened foam layer is thermally fused to the substrate by vacuum suction from the concave vacuum suction mold side for the skin material and the convex vacuum suction mold side for the substrate. In the vacuum forming machine for interior parts that are shaped with the surface of the concave vacuum suction mold for the skin material while adhering with the agent,
The non-adhering layer is not adhered to the non-adhering substrate region that does not adhere the foamed layer even when vacuum sucked or the convex vacuum suction type part for the substrate that occupies the non-adhesive surface region to the extent that the foamed layer is not adhered with the hot-melt adhesive. A vacuum forming machine for interior parts, wherein a cooling mechanism for cooling the mold surface on the back surface of the base material region or the non-molding surface region is incorporated. 冷却機構が、基材用凸状真空吸引型に形成された切欠部に対応する形状に形成された入れ子として構成され、その表面が型面を形成することを特徴とする請求項１記載の内装品の真空成形機。   2. The interior according to claim 1, wherein the cooling mechanism is configured as a nest formed in a shape corresponding to the notch formed in the convex vacuum suction mold for the base material, and the surface forms a mold surface. Vacuum forming machine. 冷却機構が、中実の金属製の入れ子に、冷媒を循環させるパイプを内蔵させて構成されることを特徴とする請求項２記載の内装品の真空成形機。   3. The vacuum forming machine for interior parts according to claim 2, wherein the cooling mechanism is constructed by incorporating a pipe for circulating the refrigerant in a solid metal insert. 冷却機構が、中実の金属製の入れ子の型締め時に外気に晒される領域にフィンを形成して構成されることを特徴とする請求項２記載の内装品の真空成形機。   3. The vacuum forming machine for interior parts according to claim 2, wherein the cooling mechanism is configured by forming fins in a region exposed to outside air when the solid metal insert is clamped. 入れ子及び切欠部間に断熱層が介在することを特徴とする請求項２乃至請求項４記載の内装品の真空成形機。   5. A vacuum forming machine for interior parts according to claim 2, wherein a heat insulating layer is interposed between the insert and the notch.
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JP5295030B2 (en) * 2009-07-29 2013-09-18 本田技研工業株式会社 Molding equipment
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