JP2000159047A - Manufacture of surface skin having cleavage-expected part for air bag door - Google Patents
Manufacture of surface skin having cleavage-expected part for air bag doorInfo
- Publication number
- JP2000159047A JP2000159047A JP10340377A JP34037798A JP2000159047A JP 2000159047 A JP2000159047 A JP 2000159047A JP 10340377 A JP10340377 A JP 10340377A JP 34037798 A JP34037798 A JP 34037798A JP 2000159047 A JP2000159047 A JP 2000159047A
- Authority
- JP
- Japan
- Prior art keywords
- skin
- base material
- cleaved
- airbag door
- sheet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 210000003491 skin Anatomy 0.000 claims description 97
- 239000000463 material Substances 0.000 claims description 44
- 238000007666 vacuum forming Methods 0.000 claims description 36
- 238000010438 heat treatment Methods 0.000 claims description 10
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 210000002615 epidermis Anatomy 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 9
- 238000000465 moulding Methods 0.000 abstract description 8
- 238000003825 pressing Methods 0.000 description 15
- 238000007493 shaping process Methods 0.000 description 12
- 229920003002 synthetic resin Polymers 0.000 description 8
- 239000000057 synthetic resin Substances 0.000 description 8
- 238000003776 cleavage reaction Methods 0.000 description 7
- 230000007017 scission Effects 0.000 description 7
- 239000000758 substrate Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000006260 foam Substances 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 229920002725 thermoplastic elastomer Polymers 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 238000009966 trimming Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Air Bags (AREA)
- Instrument Panels (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明はエアバッグドアを
速やかに展開させるためのエアバッグドア用開裂予定部
を有する表皮の製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a skin having an airbag door cleavable portion for quickly deploying an airbag door.
【０００２】[0002]
【従来の技術】最近、自動車には乗員を衝突時の衝撃か
ら安全に保護するために、エアバッグ装置が設けられて
いる場合がよくある。図８および図９に示す様に、この
エアバッグ装置５０は、例えば助手席側にあっては、イ
ンストルメントパネル等の車室側部材６０の内部に設け
られている。2. Description of the Related Art In recent years, automobiles are often provided with an airbag device in order to safely protect an occupant from the impact of a collision. As shown in FIGS. 8 and 9, the airbag device 50 is provided inside a vehicle-side member 60 such as an instrument panel on the passenger seat side, for example.
【０００３】そして、自動車が衝突などにより大きな衝
撃を受けた時には、エアバッグ装置５０のインフレータ
ーＩが作動し、エアバッグドア収容ケース５１内に収容
されているエアバッグＡが膨張し、エアバッグドア６１
を裏側から押し開いて車室内に展開する。When the automobile receives a large impact due to a collision or the like, the inflator I of the airbag device 50 is operated, and the airbag A accommodated in the airbag door accommodating case 51 is inflated, and the airbag door is inflated. 61
And open it from behind to deploy it in the cabin.
【０００４】前記エアバッグドア６１は、平時、エアバ
ッグ収容ケース５１に蓋をして車室内の美観を向上さ
せ、また衝撃時にエアバッグ収容ケース５１を開いてエ
アバッグＡが車室内に展開できるようにするものであ
る。The airbag door 61 covers the airbag housing case 51 in normal times to improve the aesthetics of the vehicle interior, and also opens the airbag housing case 51 upon impact to deploy the airbag A into the vehicle interior. Is to do so.
【０００５】前記エアバッグドアを有する車室側部材と
しては、車室側部材の成形後にエアバッグバッグドアを
組み付ける後付けタイプと、車室側部材の製造時にエア
バッグドアも一体に成形する一体成形タイプとがある。
しかし、後付けタイプは、エアバッグドアを組み付ける
作業が煩わしく、しかもその組み付け時のバラツキ等に
よってエアバッグドア周囲に見苦しい隙間を生じ易い問
題等があるため、一体成形タイプが好んで用いられてい
る。前記車室側部材６０はエアバッグドア一体成形タイ
プである。[0005] The cabin-side member having the airbag door includes a retrofit type in which the airbag door is assembled after the cabin-side member is formed, and an integral molding in which the airbag door is integrally formed when the cabin-side member is manufactured. There is a type.
However, the retrofit type has a problem that the work of assembling the airbag door is troublesome, and there is a problem that an unsightly gap is easily generated around the airbag door due to a variation in the assembling. The vehicle compartment side member 60 is an airbag door integral molding type.
【０００６】また、エアバッグドア一体成形タイプの車
室側部材６０には、この例のようにドア基材６７の取り
付けられたインストルメントパネル基材６６と表皮６２
間で発泡体６３を発泡成形したものと、図示しないが、
表面の裏面に射出成形等によって直接インストルメント
パネル基材やドア基材を成形したものとがある。さら
に、前記表皮としては、塩化ビニル樹脂等からなる非発
泡の合成樹脂シートから成形されたものと、非発泡の合
成樹脂層の裏面に発泡層を有する複層の合成樹脂シート
がある。いずれの場合であってもエアバッグ一体成形タ
イプの車室側部材においては、前記表皮６２にあらかじ
めエアバッグドア６１部分を画定する開裂予定部６４が
形成され、エアバッグドア６１裏面がエアバッグＡの膨
張により押された際に、前記開裂予定部６４に沿って車
室側部材６０が破断し、エアバッグドア６１が開くよう
にされる。なお、図示のものはエアバッグドアが両開き
タイプのものであって、開裂予定部が平面視略Ｈ字形状
になっているが、片開きの場合には平面視略コ字形状の
開裂予定部とされる。[0006] Further, as shown in this example, an instrument panel base material 66 on which a door base material 67 is attached and a skin 62 are provided on the vehicle interior side member 60 of the airbag door integral molding type.
Although not shown, the foam 63 is foam-molded between the
There is one in which an instrument panel base material or a door base material is directly formed on the front and back surfaces by injection molding or the like. Further, as the skin, there are a synthetic resin sheet formed of a non-foamed synthetic resin sheet made of a vinyl chloride resin or the like, and a multi-layer synthetic resin sheet having a foamed layer on the back surface of the non-foamed synthetic resin layer. In any case, in the vehicle-body-side member of the airbag integrated molding type, a cleavable portion 64 that defines the portion of the airbag door 61 is formed in the skin 62 in advance, and the back surface of the airbag door 61 is formed by the airbag A. When pushed by the inflation of the vehicle, the cabin-side member 60 is broken along the expected cleavage portion 64 and the airbag door 61 is opened. In the drawing, the airbag door is of a double-opening type, and the to-be-cleaved portion has a substantially H-shape in plan view. It is said.
【０００７】前記表皮６２の開裂予定部６４は、前記エ
アバッグＡの押圧によってスムーズに破断するように、
溝やスリット等によって周囲より脆弱にされている。こ
の開裂予定部６４の形成は、公知のパウダースラッシュ
成形や真空成形等により車室側部材形状に成形した合成
樹脂製表皮を、受け治具の受け面に配置して開裂予定部
形成位置を加工刃で押圧したり、また、レーザー加工に
よって溝やスリットを形成すること等により行われてい
る。[0007] The portion 64 to be cleaved of the outer skin 62 is smoothly broken by pressing the airbag A.
It is made weaker than the surroundings by grooves, slits, etc. The formation of the scheduled to be cleaved portion 64 is performed by arranging a synthetic resin skin molded into a vehicle interior side member shape by a known powder slush molding, vacuum forming, or the like on the receiving surface of the receiving jig, and processing the position to be cleaved. It is performed by pressing with a blade, or forming grooves or slits by laser processing.
【０００８】ところが、この様な開裂予定部の形成は、
表皮の成形後、独立した別の工程で行われるため面倒で
あるのみならず、レーザー加工の場合には高価な装置も
必要なため、表皮のコストが上昇するという問題があ
る。また、前記開裂予定部は、１ｍｍ厚程度の表皮に対
し約０．５ないし０．７ｍｍの深さの溝状とされるた
め、該開裂予定部の形成作業を慎重に行わなければなら
なかった。しかも、加工刃の押圧によって表皮の開裂予
定部を形成する場合には、表皮が受け治具の受け面で滑
ってずれ易く、所定の開裂予定部を正確かつ一定して形
成しにくい問題がある。However, the formation of such a portion to be cleaved is as follows.
After the formation of the skin, it is performed in a separate and independent step, which is not only troublesome, but also involves a problem in that the cost of the skin increases because laser processing requires an expensive apparatus. In addition, since the to-be-cleaved portion is formed into a groove having a depth of about 0.5 to 0.7 mm with respect to the skin having a thickness of about 1 mm, the formation of the to-be-cleaved portion must be performed carefully. . In addition, in the case of forming a scheduled tearing portion of the skin by pressing the processing blade, there is a problem that the skin easily slips on the receiving surface of the receiving jig, and it is difficult to form a predetermined scheduled tearing portion accurately and uniformly. .
【０００９】[0009]
【発明が解決しようとする課題】この発明は前記の問題
点に鑑みてなされたもので、表皮の真空成形時に開裂予
定部を効率良く形成でき、しかも開裂予定部の形成に高
価な装置が必要なく、経済的に表皮を製造できる方法を
提供するものである。DISCLOSURE OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and requires an expensive device for efficiently forming a portion to be cleaved at the time of vacuum forming the skin, and for forming the portion to be cleaved. And a method for economically producing the epidermis.
【００１０】[0010]
【課題を解決するための手段】すなわち、請求項１の発
明は、エアバッグドアを有する車室側部材のための表皮
を真空成形する際、表皮用シートを加熱軟化させて真空
成形型に吸引することによって賦形し、前記真空成形型
に表皮用シートを吸引保持した状態で当該表皮用シート
の前記エアバッグドアに対する表皮の開裂予定部形成位
置を加工刃で押圧し、溝状の開裂予定部を形成すること
を特徴とするエアバッグドア用開裂予定部を有する表皮
の製造方法に係る。That is, according to the first aspect of the present invention, when vacuum forming a skin for a vehicle-side member having an airbag door, the skin sheet is heated and softened and sucked into a vacuum forming die. In the state where the skin sheet is sucked and held by the vacuum forming die, the position at which the surface of the skin sheet is to be cleaved with respect to the airbag door is pressed with a processing blade, and the groove-shaped tearing is performed. The present invention also relates to a method for producing a skin having an opening portion for an airbag door, characterized by forming a portion.
【００１１】また、請求項２の発明は、エアバッグドア
を有する車室側部材のための表皮を真空成形する際、真
空吸引用貫通孔が形成された基材を真空成形型の型面に
保持し、表皮用シートを加熱軟化させて前記基材表面に
接着剤を介して吸引することによって、前記表皮用シー
トを賦形するとともに基材と接着一体化し、前記真空成
形型に基材及び表皮用シートを吸引保持した状態で当該
表皮用シートの前記エアバッグドアに対する表皮の開裂
予定部形成位置を加工刃で押圧し、溝状の開裂予定部を
形成することを特徴とするエアバッグドア用開裂予定部
を有する表皮の製造方法に係る。Further, according to the present invention, when vacuum-forming a skin for a vehicle-side member having an airbag door, a base material having a through-hole for vacuum suction is formed on a mold surface of a vacuum forming die. Holding, by heating and softening the skin sheet and sucking it through the adhesive on the surface of the base material, the skin sheet is shaped and adhered and integrated with the base material, and the base material and An airbag door characterized in that, in a state where the skin sheet is suction-held, a position at which the surface of the skin sheet is to be cleaved with respect to the airbag door at the formation position of the skin is pressed by a processing blade to form a groove-shaped portion to be cleaved. The present invention relates to a method for producing an epidermis having an intended cleavage part.
【００１２】[0012]
【発明の実施の形態】以下添付の図面に従ってこの発明
を詳細に説明する。図１はこの発明の一実施例における
真空成形時の加熱工程と賦形工程を示す断面図、図２は
加工刃による押圧工程と脱型工程を示す断面図、図３は
加工刃による押圧時の拡大断面図、図４はこの発明のそ
の他の例における真空成形時の基材配置工程から賦形工
程を示す断面図、図５は加工刃による押圧工程と脱型工
程を示す断面図、図６はトリミング工程を示す断面図、
図７は加工刃による押圧時の拡大断面図である。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a cross-sectional view showing a heating step and a shaping step in vacuum forming according to an embodiment of the present invention, FIG. 2 is a cross-sectional view showing a pressing step by a processing blade and a demolding step, and FIG. FIG. 4 is a cross-sectional view illustrating a base material disposing step to a shaping step during vacuum forming according to another embodiment of the present invention, and FIG. 5 is a cross-sectional view illustrating a pressing step by a processing blade and a demolding step. 6 is a sectional view showing a trimming step;
FIG. 7 is an enlarged sectional view at the time of pressing by the processing blade.
【００１３】この発明は、エアバッグドア一体成形タイ
プの車室側部材に用いられる表皮の製造方法に関し、以
下に詳述するように表皮を真空成形する際にエアバッグ
ドア用開裂予定部を形成するものである。なお、以下の
実施例は、先に従来技術の項で説明した図８と同様の外
形からなるインストルメントパネル用表皮を製造する例
であり、エアバッグドアに対する開裂予定部は前記のよ
うに略Ｈ字形あるいは略コ字形等、適宜の形状に形成さ
れる。また、インストルメントパネル（車室側部材）
は、前記のように表皮とインストルメントパネル基材間
で発泡体が成形されるもの、あるいはインストルメント
パネル基材の表面に直接表皮が積層されるもののいずれ
であってもよい。[0013] The present invention relates to a method for manufacturing a skin used for an airbag door integrally molded type passenger compartment side member, and as described in detail below, forms a tearable portion for an airbag door when vacuum forming the skin. Is what you do. The following embodiment is an example of manufacturing an instrument panel skin having an outer shape similar to that of FIG. 8 described in the section of the prior art, and the portion to be cleaved with respect to the airbag door is substantially as described above. It is formed in an appropriate shape such as an H shape or a substantially U shape. In addition, the instrument panel (vehicle compartment side member)
As described above, the foam may be formed between the skin and the instrument panel substrate, or the skin may be directly laminated on the surface of the instrument panel substrate.
【００１４】まず、図１の（Ａ）に示すように、表皮用
シート１１の加熱工程を行う。この工程では、表皮用シ
ート１１をヒーター等の加熱手段Ｍで加熱軟化させて賦
形可能な状態とする。表皮用シート１１は、加熱により
軟化して賦形可能になる熱可塑性合成樹脂からなり、例
えば、軟質塩化ビニル樹脂やポリオレフィン樹脂等から
なる非発泡の合成樹脂シート、あるいはポリオレフィン
系熱可塑性エラストマー（ＴＰＯ）等からなる非発泡層
の裏面にポリエチレン発泡体等からなる発泡層を有する
複層合成樹脂シート等、適宜の材質が選択される。この
例の表皮用シート１１は、厚み０．６ｍｍのポリオレフ
ィン系熱可塑性エラストマーからなる非発泡層１２の裏
面に、厚み１．０ｍｍのポリエチレン発泡層１３（図３
に示す）を有する二層構造のものである。First, as shown in FIG. 1A, a heating step of the skin sheet 11 is performed. In this step, the skin sheet 11 is heated and softened by a heating means M such as a heater so that the skin sheet 11 can be shaped. The skin sheet 11 is made of a thermoplastic synthetic resin that can be shaped by being softened by heating. For example, a non-foamed synthetic resin sheet made of a soft vinyl chloride resin or a polyolefin resin, or a polyolefin-based thermoplastic elastomer (TPO) A suitable material is selected, such as a multi-layer synthetic resin sheet having a foamed layer made of a polyethylene foam or the like on the back surface of the non-foamed layer made of the same. The skin sheet 11 of this example has a 1.0 mm thick polyethylene foam layer 13 (see FIG. 3) on the back surface of a non-foamed layer 12 made of a 0.6 mm thick polyolefin-based thermoplastic elastomer.
(Shown below).
【００１５】次いで、図１の（Ｂ）に示すように賦形工
程を行う。この賦形工程では、前記加熱軟化した表皮用
シート１１を、真空成形型３０の型面３１に真空吸引し
て真空成形型３０の型面３１形状に賦形する。真空成形
型３１は、目的とする車室側部材の外形に応じた形状の
型面３１を有し、その型面３１に多数の吸引孔３５，３
５，…が形成されている。前記型面の吸引孔３５は、台
部３３の吸引口３４を介して真空吸引装置（図示せず）
に通じ、その真空吸引装置の作動により型面３１と表皮
用シート１１間を減圧にして表皮用シート１１を型面３
１に吸着する。Next, a shaping step is performed as shown in FIG. In the shaping step, the heated and softened skin sheet 11 is vacuum-sucked onto the mold surface 31 of the vacuum forming die 30 to form the shape of the mold surface 31 of the vacuum forming die 30. The vacuum forming die 31 has a die surface 31 having a shape corresponding to the outer shape of a target vehicle interior member, and the die surface 31 has a large number of suction holes 35 and 3.
5,... Are formed. The suction hole 35 of the mold surface is connected to a vacuum suction device (not shown) through a suction port 34 of the base 33.
Then, the pressure between the mold surface 31 and the skin sheet 11 is reduced by the operation of the vacuum suction device, and the skin sheet 11 is moved to the mold surface 3.
Adsorb to 1.
【００１６】続いて図２の（Ｃ）に示すように加工刃４
０による押圧工程を行う。この工程では、前記表皮用シ
ート１１の賦形後、該表皮用シート１１が未だ真空成形
型３０に吸引保持されている状態で、加工刃４０を表皮
用シート１１の表面における表皮１０の開裂予定部２０
形成位置に押圧し、開裂予定部２０形成位置に断面略Ｖ
字形の溝からなる開裂予定部２０を形成する。その際、
表皮用シート１１は真空成形型３０に吸引保持されてい
るため、加工刃４０で押圧しても表皮用シート１１が位
置ずれせず、正確に押圧でき、一定の開裂予定部２０を
形成できる。開裂予定部２０の深さは、表皮用シート１
１の厚みや材質によっても異なるが、この例では０．３
ｍｍとされる。Subsequently, as shown in FIG.
A pressing step with 0 is performed. In this step, after shaping the skin sheet 11, the processing blade 40 is to be split at the surface of the skin sheet 11 while the skin sheet 11 is still suction-held by the vacuum forming die 30. Part 20
Is pressed to the formation position, and the section V
A to-be-cleaved portion 20 composed of a letter-shaped groove is formed. that time,
Since the skin sheet 11 is sucked and held by the vacuum forming die 30, the skin sheet 11 is not displaced even when pressed by the processing blade 40, can be pressed accurately, and a predetermined scheduled tearing portion 20 can be formed. The depth of the portion 20 to be cleaved is the skin sheet 1
1, although it depends on the thickness and material, in this example, 0.3
mm.
【００１７】この加工刃４０による押圧は、表皮用シー
ト１１が賦形直後のまだ十分に温度が高い軟化状態の時
点で行うのが好ましい。軟化している表皮用シート１１
は加工がし易いため、強く押圧しなくても溝２１が形成
されるとともに、薄肉とする開裂予定部２０の微妙な厚
み調節が容易になる。The pressing by the processing blade 40 is preferably performed at the time when the skin sheet 11 is in a softened state immediately after the shaping, where the temperature is still sufficiently high. Softened skin sheet 11
Is easy to process, so that the grooves 21 are formed without strong pressing, and the delicate thickness adjustment of the thinned portion to be cleaved 20 is facilitated.
【００１８】なお、加工刃４０は、先端の刃先４１の厚
みが厚すぎると、表皮用シート１１表面の押圧部両側、
すなわち開裂予定部の両側に沿って土手状の盛り上がり
を生じ易く、得られる表皮の開裂予定部の外観が損なわ
れるため、０．４ｍｍ〜０．８ｍｍ厚程度の細い刃先４
１にするのが好ましい。また、加工刃４０はその刃先４
１が開裂予定部２０の形状に応じて略Ｈ字形あるいは略
コ字形等とされ、エアーあるいは油圧シリンダー装置等
の作動装置４５で表皮用シート１１の開裂予定部２０形
成位置に向けて前進後退可能とされる。さらに、加工刃
の刃先が連続してなく、のこぎりの歯のように凹凸のあ
るものとして、薄肉部が断続する溝状開裂予定部として
もよい。If the thickness of the cutting edge 41 at the tip is too large, the processing blade 40 will be pressed on both sides of the pressing portion on the surface of the skin sheet 11.
That is, a bank-shaped swelling is likely to occur along both sides of the portion to be cleaved, and the appearance of the portion to be cleaved of the obtained skin is impaired.
It is preferably set to 1. The processing blade 40 has a cutting edge 4
1 has a substantially H-shape or a substantially U-shape depending on the shape of the portion 20 to be cleaved, and can be advanced and retracted toward the position where the portion 20 to be cleaved of the skin sheet 11 is to be formed by an operating device 45 such as air or a hydraulic cylinder device. It is said. Further, the cutting edge of the processing blade may not be continuous, but may be uneven, such as a saw tooth, and may be a groove-like cleavage scheduled portion in which a thin portion is interrupted.
【００１９】次いで、前記表皮用シート１１が自然冷却
あるいは冷風や冷水の吹き付け等による強制冷却によっ
て形状が固定された後、図２の（Ｄ）に示すように表皮
用シート１１を真空成形型３０の型面３１から剥がす脱
型工程を行い、その後必要に応じて表皮用シート１１の
不要部をトリミングして所望の表皮１０を得る。このよ
うにして得られた表皮１０は、所要形状に賦形されてい
ると共に、エアバッグドアに対応する開裂予定部２０を
有しており、従来のように後加工によって開裂予定部２
０を形成する必要がない。Next, after the skin sheet 11 is fixed in shape by natural cooling or forced cooling by blowing cold air or cold water, the skin sheet 11 is formed into a vacuum forming mold 30 as shown in FIG. Then, an unnecessary portion of the skin sheet 11 is trimmed as necessary to obtain a desired skin 10. The skin 10 obtained in this manner is shaped into a required shape, and has a scheduled tearing portion 20 corresponding to the airbag door.
There is no need to form a zero.
【００２０】前記のようにして成形された表皮１０は、
その後車室側部材の成形に供される。その際、車室側部
材が表皮１０と、ドア基材の取り付けられたインストル
メントパネル基材間に発泡体を有する構造の場合には、
発泡成形型に前記表皮と、ドア基材の取り付けられたイ
ンストルメントパネル基材をセットし、表皮１０とイン
ストルメントパネル基材間に発泡原料を注入し発泡させ
ることによって車室側部材が成形される。The skin 10 formed as described above is
After that, it is used for forming the vehicle interior side member. At that time, when the cabin side member has a structure having a foam between the skin 10 and the instrument panel base material to which the door base material is attached,
The skin and the instrument panel base material to which the door base material is attached are set in a foaming mold, and a foam material is injected and foamed between the skin 10 and the instrument panel base material to form the vehicle compartment side member. You.
【００２１】また、本発明のその他の実施例として、開
裂予定部を有する表皮を基材と一体に成形する場合を図
４ないし図７に従って説明する。なお、基材は、あらか
じめ射出成形等によって所定形状に成形されたものであ
って、図示しないがインストルメントパネル基材の一部
にスリットやノッチ等によって略Ｕ字形あるいはＨ字形
等にエアバッグドア基材部分が区画形成されたもの、あ
るいはインストルメントパネル基材にエアバッグ開口部
が形成され、該開口部にエアバッグドア基材が開閉可能
に取り付けられたもの等、適宜のものが用いられる。Further, as another embodiment of the present invention, a case in which a skin having a portion to be cleaved is formed integrally with a substrate will be described with reference to FIGS. The base material is previously formed into a predetermined shape by injection molding or the like. Although not shown, a part of the instrument panel base material is formed into a substantially U-shaped or H-shaped airbag door by slits or notches. Appropriate ones are used, such as one in which the base portion is sectioned or one in which an airbag opening is formed in the instrument panel base and an airbag door base is attached to the opening so as to be openable and closable. .
【００２２】まず、図４の（Ａ）に示すように、真空吸
引用貫通孔１５が形成されている基材１４を真空成形型
３０ａの型面３１ａに保持する基材配置工程を行う。基
材１４は真空成形型３０ａの所定の位置に配置されて型
面３１ａに保持される。基材１４に形成されている該真
空吸引用貫通孔１５は、真空成形型３０ａの型面３１ａ
に形成されている真空吸引孔３５ａと対応する位置や、
その他適宜の位置に設けることが望ましい。また、基材
１４の表面には接着剤が塗布され、後述する表皮用シー
トが基材１４と接着できるようにされる。First, as shown in FIG. 4A, a base material placement step of holding the base material 14 having the vacuum suction through hole 15 formed thereon on the mold surface 31a of the vacuum forming die 30a is performed. The base material 14 is arranged at a predetermined position of the vacuum forming die 30a and is held on the die surface 31a. The through-hole 15 for vacuum suction formed in the base material 14 is provided on the mold surface 31a of the vacuum forming mold 30a.
Position corresponding to the vacuum suction hole 35a formed in
It is desirable to provide them at other appropriate positions. An adhesive is applied to the surface of the base material 14 so that a skin sheet described later can be bonded to the base material 14.
【００２３】次に、図４の（Ｂ）に示すように、表皮用
シート１１ａの加熱工程を行う。表皮用シート１１ａを
ヒーター等の加熱手段Ｍで加熱軟化させて賦形可能な状
態とする。表皮用シート１１ａは、前記した実施例と同
様の原料および構造のものを使用している。Next, as shown in FIG. 4B, a heating step of the skin sheet 11a is performed. The skin sheet 11a is heated and softened by a heating means M such as a heater so that the skin sheet 11a can be shaped. The material and structure of the skin sheet 11a are the same as those of the above-described embodiment.
【００２４】次いで、表皮用シート１１ａの賦形工程を
行う。賦形工程では、加熱軟化した表皮用シート１１ａ
を、前記真空成形型３０ａの基材１４表面に真空吸引し
て吸着させ、基材１４の表面形状に賦形する。真空吸引
装置（図示せず）は基材１４の真空吸引貫通孔１５およ
び真空成形型３１ａの真空吸引孔３５に通じ、その装置
の作動により型面３１ａと基材１４間および基材１４表
面と表皮用シート１１ａの間を減圧し、基材１４を型面
３１ａにまた表皮用シート１１ａを基材１４表面に吸着
している。さらに、この吸着によって表皮用シート１１
ａは、基材１４表面の接着剤を介して基材１４と接着一
体化する。なお、符号３３ａは真空成形型の台部、符号
３４ａは真空吸引装置に通じる吸引口である。Next, a shaping step of the skin sheet 11a is performed. In the shaping step, the heat-softened skin sheet 11a
Is vacuum-sucked and adsorbed on the surface of the base material 14 of the vacuum forming die 30a, and shaped into the surface shape of the base material 14. A vacuum suction device (not shown) communicates with the vacuum suction through-hole 15 of the base material 14 and the vacuum suction hole 35 of the vacuum forming die 31a, and by operating the device, the space between the mold surface 31a and the base material 14 and the surface of the base material 14 The pressure between the skin sheets 11a is reduced, and the base material 14 is adsorbed on the mold surface 31a and the skin sheet 11a is adsorbed on the surface of the base material 14. Further, the skin sheet 11
a is bonded and integrated with the substrate 14 via an adhesive on the surface of the substrate 14. Note that reference numeral 33a denotes a base of the vacuum forming die, and reference numeral 34a denotes a suction port communicating with a vacuum suction device.
【００２５】続いて、図５の（Ｃ）およびその一部を拡
大する図７に示すように加工刃４０ａによる押圧工程を
行う。この工程では、前記真空成形型３０ａに基材１４
及び表皮用シート１１ａを吸引保持した状態で、前記実
施例と同様に、賦形された表皮用シート１１ａの表面に
おける表皮の開裂予定部形成位置に加工刃４０ａを押圧
し、開裂予定部形成位置に断面略Ｖ字形の溝からなる開
裂予定部２０ａを形成する。その際、基材１４及び表皮
用シート１１ａは真空成形型３０ａの型面３１ａに吸引
保持され、さらに基材１４と表皮用シート１１ａは接着
一体化しているため、表皮１０ａがずれることなく正確
な位置に加工刃４０ａを押圧でき、一定位置に開裂予定
部２０ａを形成できる。また、賦形直後の未だ柔らかい
表皮用シート１１ａに対して加工刃による押圧を行え
ば、強く押圧しなくても溝２１ａが形成され、薄肉の開
裂予定部２０ａの微妙な厚み調節が容易になる。Subsequently, as shown in FIG. 5 (C) and FIG. 7 which enlarges a part thereof, a pressing step by a processing blade 40a is performed. In this step, the base material 14 is placed on the vacuum forming die 30a.
In a state where the skin sheet 11a is sucked and held, similarly to the above-described embodiment, the processing blade 40a is pressed to the surface of the shaped skin sheet 11a at the position where the skin is to be cleaved, and the position where the planned tear is formed. Is formed with a to-be-cleaved portion 20a comprising a groove having a substantially V-shaped cross section. At that time, the base material 14 and the skin sheet 11a are sucked and held by the mold surface 31a of the vacuum forming die 30a, and the base material 14 and the skin sheet 11a are bonded and integrated, so that the skin 10a can be accurately moved without displacement. The processing blade 40a can be pressed to the position, and the planned cleavage portion 20a can be formed at a fixed position. Further, if the pressing is performed by the processing blade on the still soft skin sheet 11a immediately after the shaping, the groove 21a is formed without strongly pressing, and the delicate thickness adjustment of the thin-walled scheduled cleavage portion 20a is facilitated. .
【００２６】次に、前記基材１４表面の表皮用シート１
１ａが強制冷却によって形状固定された後、図５の
（Ｄ）に示すように真空成形型３０ａの型面３１ａから
剥がす脱型工程を行い、図６に示すように不要部分１６
のトリミング工程を必要に応じて行う。このようにし
て、基材１４と一体になった所望の表皮１０ａを得る。Next, the skin sheet 1 on the surface of the substrate 14
After the shape of the mold 1a is fixed by forced cooling, the mold is removed from the mold surface 31a of the vacuum mold 30a as shown in FIG. 5D, and the unnecessary portion 16 is removed as shown in FIG.
Is performed as necessary. Thus, a desired skin 10a integrated with the base material 14 is obtained.
【００２７】[0027]
【発明の効果】以上、図示し説明したように、本発明の
エアバッグドア用開裂予定部を有する表皮の製造方法に
よれば、表皮を賦形するための真空成形の工程で、加工
刃を用いて開裂予定部を成形するため、表皮成形後の余
分な後工程によって開裂予定部を形成する必要がなくコ
ストを抑えることができ効率もよくなる。As described above, according to the method for producing a skin having a tearable portion for an airbag door according to the present invention, the processing blade is formed in a vacuum forming step for shaping the skin. Since the to-be-cleaved portion is formed by using this, it is not necessary to form the to-be-cleaved portion by an extra post-process after the skin is formed, so that the cost can be suppressed and the efficiency can be improved.
【００２８】さらに、真空成形時に基材と接着一体化し
た表皮用シートに対して開裂予定部を形成しているた
め、基材に対する開裂予定部の位置も考慮して表皮を一
体化することができ、後工程との際に表皮と基材を一体
化するものに比べてより開裂予定部の成形位置が正確に
行え、作業も簡単に行える。Furthermore, since the planned tearing portion is formed on the skin sheet adhered and integrated with the base material during vacuum forming, the skin can be integrated in consideration of the position of the planned tearing portion with respect to the base material. It is possible to perform the molding position of the portion to be cleaved more accurately than in the case where the skin and the base material are integrated in the post-process, and the operation can be easily performed.
【００２９】しかも、本発明によれば、レーザー加工の
ような高価、複雑な装置を必要としないため、経済的で
ある。さらに、表皮用シートを真空成形型に吸引保持し
た状態で加工刃により押圧して開裂予定部を形成するた
め、開裂予定部形成時に表皮用シートが位置ずれせず、
開裂予定部を所定の位置に正確に形成できる。Moreover, according to the present invention, there is no need for expensive and complicated equipment such as laser processing, so that it is economical. Further, since the skin sheet is pressed by the processing blade in a state where the skin sheet is suction-held in the vacuum forming die to form the scheduled tearing part, the skin sheet does not shift during the scheduled tearing part formation,
The part to be cleaved can be accurately formed at a predetermined position.
【図１】この発明の一実施例における真空成形時の加熱
工程と賦形工程を示す断面図である。FIG. 1 is a cross-sectional view showing a heating step and a shaping step during vacuum forming according to an embodiment of the present invention.
【図２】加工刃による押圧工程と脱型工程を示す断面図
である。FIG. 2 is a sectional view showing a pressing step and a demolding step by a processing blade.
【図３】加工刃による押圧時の拡大断面図である。FIG. 3 is an enlarged sectional view when pressed by a processing blade.
【図４】その他の実施例における真空成形時の基材配置
工程と加熱工程と賦形工程を示す断面図である。FIG. 4 is a cross-sectional view showing a substrate disposing step, a heating step, and a shaping step during vacuum forming in another embodiment.
【図５】加工刃による押圧工程と脱型工程を示す断面図
である。FIG. 5 is a cross-sectional view showing a pressing step and a demolding step by a processing blade.
【図６】トリミング工程を示す断面図である。FIG. 6 is a sectional view showing a trimming step.
【図７】加工刃による押圧時の拡大断面図である。FIG. 7 is an enlarged sectional view when pressed by a processing blade.
【図８】従来の開裂予定部が形成されたインストルメン
トパネルを示す斜視図である。FIG. 8 is a perspective view showing a conventional instrument panel in which a scheduled cleavage portion is formed.
【図９】図８の９−９線における断面図である。9 is a sectional view taken along line 9-9 in FIG.
【符号の説明】 １０，１０ａ 表皮 １１，１１ａ 表皮用シート １４ 基材 １５ 真空吸引貫通孔 ２０，２０ａ エアバッグドア用開裂予定部 ２１，２１ａ 溝 ３０，３０ａ 真空成形型 ３１，３１ａ 真空成形型型面 ４０，４１ａ 加工刃 ４１ 刃先 Ａ エアバッグDESCRIPTION OF SYMBOLS 10, 10a Skin 11, 11a Sheet for skin 14 Base material 15, Vacuum suction through hole 20, 20a Expected cleavage portion for airbag door 21, 21a Groove 30, 30a Vacuum forming die 31, 31a Vacuum forming die Surface 40, 41a Processing blade 41 Cutting edge A Airbag
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） // Ｂ２９Ｌ 7:00 9:00 31:00 (72)発明者 久留 智和 愛知県安城市今池町３−１−36 株式会社 イノアックコーポレーション安城事業所内 Ｆターム(参考） 3D044 BA07 BA11 BB01 BC03 BC04 BD04 3D054 AA03 AA14 BB09 BB10 BB16 BB23 BB30 FF17 4F208 AD05 AD08 AH17 MA01 MB01 MB11 MC02 MJ05 MW01 MW21──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme court ゛ (Reference) // B29L 7:00 9:00 31:00 (72) Inventor Tomokazu Kurume 3- Imaikecho, Anjo-shi, Aichi Prefecture 1-36 Inoac Corporation Anjo Office F-term (reference) 3D044 BA07 BA11 BB01 BC03 BC04 BD04 3D054 AA03 AA14 BB09 BB10 BB16 BB23 BB30 FF17 4F208 AD05 AD08 AH17 MA01 MB01 MB11 MC02 MJ05 MW01 MW21
Claims (2)
めの表皮を真空成形する際、 表皮用シートを加熱軟化させて真空成形型に吸引するこ
とによって賦形し、前記真空成形型に表皮用シートを吸
引保持した状態で当該表皮用シートの前記エアバッグド
アに対する表皮の開裂予定部形成位置を加工刃で押圧
し、溝状の開裂予定部を形成することを特徴とするエア
バッグドア用開裂予定部を有する表皮の製造方法。1. When vacuum forming a skin for a vehicle-side member having an airbag door, a skin sheet is heated and softened and shaped by suction into a vacuum forming die, and the skin is formed on the vacuum forming die. The airbag door is characterized in that, in a state in which the sheet for suction is held by suction, a position at which the expected surface of the skin sheet is to be cleaved with respect to the airbag door with respect to the airbag door is formed by a processing blade to form a groove-like scheduled to be cleaved. A method for producing an epidermis having a portion to be cleaved.
めの表皮を真空成形する際、 真空吸引用貫通孔が形成された基材を真空成形型の型面
に保持し、表皮用シートを加熱軟化させて前記基材表面
に接着剤を介して吸引することによって、前記表皮用シ
ートを賦形するとともに基材と接着一体化し、前記真空
成形型に基材及び表皮用シートを吸引保持した状態で当
該表皮用シートの前記エアバッグドアに対する表皮の開
裂予定部形成位置を加工刃で押圧し、溝状の開裂予定部
を形成することを特徴とするエアバッグドア用開裂予定
部を有する表皮の製造方法。2. When vacuum forming a skin for a vehicle-side member having an airbag door, a base material having a through hole for vacuum suction is held on a mold surface of a vacuum forming die, and a skin sheet is formed. By heating and softening and suctioning the surface of the base material through an adhesive, the skin sheet was shaped and adhered and integrated with the base material, and the base material and the skin sheet were suction-held in the vacuum mold. In this state, a position at which the expected surface of the skin sheet is to be cleaved with respect to the airbag door is pressed by a processing blade to form a groove-like scheduled to be cleaved, and a skin having an expected to be cleaved portion for an airbag door is provided. Manufacturing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10340377A JP2000159047A (en) | 1998-11-30 | 1998-11-30 | Manufacture of surface skin having cleavage-expected part for air bag door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10340377A JP2000159047A (en) | 1998-11-30 | 1998-11-30 | Manufacture of surface skin having cleavage-expected part for air bag door |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000159047A true JP2000159047A (en) | 2000-06-13 |
Family
ID=18336373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10340377A Pending JP2000159047A (en) | 1998-11-30 | 1998-11-30 | Manufacture of surface skin having cleavage-expected part for air bag door |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000159047A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004045921A1 (en) | 2002-11-18 | 2004-06-03 | Nakata Coating Co., Ltd. | Vehicle upholstery member having air bag door, and method and device for producing the same |
| US6811735B2 (en) | 2001-07-27 | 2004-11-02 | Toyoda Gosei | Method for manufacturing automobile interior article |
| JP2006298264A (en) * | 2005-04-22 | 2006-11-02 | Inoac Corp | Method of forming skin cleavage target part |
| JP2009248514A (en) * | 2008-04-09 | 2009-10-29 | Toyota Boshoku Corp | Method for manufacturing and manufacturing device of interior material |
| US8316521B2 (en) | 2002-11-18 | 2012-11-27 | Nakata Coating Co., Ltd. | Device for producing break-scheduled line for vehicle upholstery member |
| JP2021084486A (en) * | 2019-11-26 | 2021-06-03 | トヨタ車体株式会社 | Manufacturing method of vehicular interior component |
-
1998
- 1998-11-30 JP JP10340377A patent/JP2000159047A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6811735B2 (en) | 2001-07-27 | 2004-11-02 | Toyoda Gosei | Method for manufacturing automobile interior article |
| WO2004045921A1 (en) | 2002-11-18 | 2004-06-03 | Nakata Coating Co., Ltd. | Vehicle upholstery member having air bag door, and method and device for producing the same |
| US7452001B2 (en) | 2002-11-18 | 2008-11-18 | Nakata Coating Co. Ltd. | Vehicle upholstery member having air bag door, and method and device for producing the same |
| US8316521B2 (en) | 2002-11-18 | 2012-11-27 | Nakata Coating Co., Ltd. | Device for producing break-scheduled line for vehicle upholstery member |
| JP2006298264A (en) * | 2005-04-22 | 2006-11-02 | Inoac Corp | Method of forming skin cleavage target part |
| JP4601481B2 (en) * | 2005-04-22 | 2010-12-22 | 株式会社イノアックコーポレーション | Method for forming epidermal cleavage planned portion and method for manufacturing instrument panel |
| JP2009248514A (en) * | 2008-04-09 | 2009-10-29 | Toyota Boshoku Corp | Method for manufacturing and manufacturing device of interior material |
| JP2021084486A (en) * | 2019-11-26 | 2021-06-03 | トヨタ車体株式会社 | Manufacturing method of vehicular interior component |
| JP7276100B2 (en) | 2019-11-26 | 2023-05-18 | トヨタ車体株式会社 | Method for manufacturing vehicle interior parts |
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