JP2010064741A - 発射通路を備えたエアバッグカバーおよびエアバッグカバーを製造する方法並びに装置 - Google Patents
発射通路を備えたエアバッグカバーおよびエアバッグカバーを製造する方法並びに装置 Download PDFInfo
- Publication number
- JP2010064741A JP2010064741A JP2009211647A JP2009211647A JP2010064741A JP 2010064741 A JP2010064741 A JP 2010064741A JP 2009211647 A JP2009211647 A JP 2009211647A JP 2009211647 A JP2009211647 A JP 2009211647A JP 2010064741 A JP2010064741 A JP 2010064741A
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- JP
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- Prior art keywords
- welding
- airbag cover
- laser beam
- flange
- passage
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 29
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 238000003466 welding Methods 0.000 claims abstract description 132
- 238000010304 firing Methods 0.000 claims description 59
- 238000003825 pressing Methods 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 17
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- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000011109 contamination Methods 0.000 claims description 2
- 239000006096 absorbing agent Substances 0.000 claims 1
- 230000002745 absorbent Effects 0.000 description 5
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- 239000004952 Polyamide Substances 0.000 description 2
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- 238000005516 engineering process Methods 0.000 description 2
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- 229920002647 polyamide Polymers 0.000 description 2
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- 238000010521 absorption reaction Methods 0.000 description 1
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- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
- B60R21/215—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components characterised by the covers for the inflatable member
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
- B29C65/16—Laser beams
- B29C65/1629—Laser beams characterised by the way of heating the interface
- B29C65/1635—Laser beams characterised by the way of heating the interface at least passing through one of the parts to be joined, i.e. laser transmission welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
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- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
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- B29C65/1667—Laser beams characterised by the way of heating the interface making use of several radiators at the same time, i.e. simultaneous laser welding
- B29C65/167—Laser beams characterised by the way of heating the interface making use of several radiators at the same time, i.e. simultaneous laser welding using laser diodes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
- B29C65/7841—Holding or clamping means for handling purposes
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C66/01—General aspects dealing with the joint area or with the area to be joined
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- B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
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- B29C66/21—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being formed by a single dot or dash or by several dots or dashes, i.e. spot joining or spot welding
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C66/3022—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined
- B29C66/30223—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined said melt initiators being rib-like
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- B29C66/53—Joining single elements to tubular articles, hollow articles or bars
- B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
- B29C66/5346—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat
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- B29C66/80—General aspects of machine operations or constructions and parts thereof
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- B29C66/812—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
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- B29C66/90—Measuring or controlling the joining process
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- B29C65/16—Laser beams
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- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
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- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
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- B29K2995/0029—Translucent
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29L2031/00—Other particular articles
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- B29L2031/3005—Body finishings
- B29L2031/3038—Air bag covers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R2021/161—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by additional means for controlling deployment trajectory
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
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- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
- B60R21/205—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in dashboards
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Abstract
【解決手段】フランジ(3)の自由端面に、互いに間隔をもって配置される複数個の溶接用スタッド(4)が形成されている。溶接用スタッド(4)は、形成されたナゲットを介して、エアバッグカバー(1)の当接領域とともに溶接結合部を形成している。複数個の溶接用スタッド(4)は、1つの溶接用スタッド(4)の各部位におけるフランジ(3)の公差誤差に相当する高度差を互いに有している。
【選択図】図2a
Description
さらに本発明は、この種のエアバッグカバーを製造する方法並びに装置にも関わる。
さらに、本発明は、発射通路と溶接されるエアバッグカバーの製造方法およびこのために適した装置をも課題とするものである。
2 発射通路
3 フランジ
4 溶接用スタッド
5 補強リブ
6 蝋材
7 基板
8 受容装置
9 繰り抜き部
10 押圧体
11 管部材の端面
12 レーザーダイオード
13 押圧体用駆動部
14 リニアドライブ
h 溶接用スタッドの高さ
±a 公差幅
2a 公差量
Claims (16)
- 発射通路を備えたエアバッグカバーであって、発射通路(2)が管部材であり、該管部材の一端にフランジ(3)が形成され、フランジ(3)が管部材の外周面から外側へ著しく突出しており、フランジ(3)の自由端面が溶接結合部を介してエアバッグカバー(1)と結合され、両溶接パートナーのうち一方が溶接用のレーザー光線に対し透過性があり、他方が吸収性がある前記エアバッグカバーにおいて、
フランジ(3)の前記自由端面に、互いに間隔をもって配置される複数個の溶接用スタッド(4)が形成され、溶接用スタッド(4)が、形成されたナゲットを介して、エアバッグカバー(1)の当接領域とともに溶接結合部を形成し、複数個の溶接用スタッド(4)は、1つの溶接用スタッド(4)の各部位におけるフランジ(3)の公差誤差に相当する高度差を互いに有していることを特徴とするエアバッグカバー。 - 溶接用スタッド(4)が長方形の横断面を有していることを特徴とする、請求項1に記載のエアバッグカバー。
- 発射通路(2)の材料が半透明であることを特徴とする、請求項1または2に記載のエアバッグカバー。
- 発射通路(2)の材料が半晶質のプラスチックであることを特徴とする、請求項3に記載のエアバッグカバー。
- エアバッグカバー(1)を、溶接用スタッド(4)を備えた発射通路(2)と溶接するための装置において、
エアバッグカバー(1)を受容する受容装置(8)に対し所定の相対位置でエアバッグカバー(1)の上方に位置固定して配置されている、水平方向に指向する基板(7)と、
基板(7)に設けられている繰り抜き部(9)であって、該繰り抜き部(9)を通って、発射通路(2)を受容し且つエアバッグ装置に対し押圧させるための押圧体(10)が駆動部(13)により鉛直方向に可動である前記繰り抜き部(9)と、
押圧体(10)の移動範囲の周囲に基板(7)に対し位置固定して配置されている複数個のレーザー光線源と、
を備えた装置。 - 複数個のレーザー光線源の数量が溶接用スタッド(4)の数量に対応していることを特徴とする、請求項5に記載の装置。
- 複数個のレーザー光線源の数量が溶接用スタッド(4)の数量の整数分の一に対応し、レーザー光線源の上流側にビームスプリッターが配置されていることを特徴とする、請求項5に記載の装置。
- 複数個のレーザー光線源が、上流側に発散光学系を備えたレーザーダイオード(12)であることを特徴とする、請求項5に記載の装置。
- 複数個のレーザー光線源が基板(7)の上方に配置され、基板(7)の材料がレーザー光線に対し透過性があり、それによってレーザー光線源が溶接時の汚染から保護されていることを特徴とする、請求項5から7までのいずれか一つに記載の装置。
- 少なくとも1つの距離センサが設けられていることを特徴とする、請求項5から9までのいずれか一つに記載の装置。
- 溶接用スタッド(4)と同数で熱センサが設けられていることを特徴とする、請求項10に記載の装置。
- 発射通路を備えたエアバッグカバーを製造する方法であって、
レーザー光線に対し透過性があるプラスチックから成るフランジ(3)を一端に形成させた管部材から成る発射通路(2)を形成するステップと、
発射通路(2)とエアバッグカバー(1)とを組み立て、その結果フランジ(3)の自由端面を所定の姿勢および位置でエアバッグカバー(1)と当接させ、その際エアバッグカバー(1)が少なくとも当接領域においてレーザー吸収材から成っているステップと、
レーザー光線をフランジ(3)に対し指向させ、フランジ(3)をエアバッグカバー(1)と溶接させるステップと、
を含む方法において、
発射通路(2)をフランジ(3)の自由側に形成させる際に、フランジ(3)の許容公差誤差よりも大きな高さ(h)を持つ溶接用スタッド(4)を形成させ、
レーザー光線が、溶接用スタッド(4)と同数に形成されるレーザー光束であること、
レーザー光束の横断面と溶接用スタッド(4)の横断面とを互いに整合させること、
レーザー光線をフランジ(3)に対し指向させている間に、前記許容誤差よりも大きく且つ前記高さ(h)よりも小さな値の組み立て距離にわたって発射通路(2)をエアバッグカバー(1)へ向けて移動させること、
を特徴とする方法。 - エアバッグカバー(1)に対するフランジ(3)の移動を、フランジ(3)とエアバッグカバー(1)との距離を検知することで制御することを特徴とする、請求項12に記載の方法。
- 個々の溶接用スタッド(4)の温度を少なくとも溶接終了時に検出し、この検出値から、個々の溶接用スタッド(4)がエアバッグカバー(1)と溶接されたかどうかを判断することを特徴とする、請求項12または13に記載の方法。
- 溶接用スタッド(4)の温度経過を溶接の継続時間にわたって検出し、レーザー光束を放出しているレーザー光線源のレーザーパワーを制御することを特徴とする、請求項12または13に記載の方法。
- 溶接用スタッド(4)の温度経過を溶接の継続時間にわたって検出して記憶させ、発射通路とともに形成した一連のエアバッグカバーに対し記憶されている温度経過を互いに比較し、それによってプロセスパラメータおよび再現可能な溶接品質に対する情報を得ることを特徴とする、請求項12または13に記載の方法。
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JP5514496B2 (ja) | 2014-06-04 |
DE102008047676A1 (de) | 2010-04-15 |
EP2163373A2 (de) | 2010-03-17 |
EP2163373A3 (de) | 2015-03-18 |
DE102008047676B4 (de) | 2019-02-14 |
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