JP2001315154A - Producing method for bumper utilizing injection technique of gas injection, and bumper produced by the method - Google Patents
Producing method for bumper utilizing injection technique of gas injection, and bumper produced by the methodInfo
- Publication number
- JP2001315154A JP2001315154A JP37183099A JP37183099A JP2001315154A JP 2001315154 A JP2001315154 A JP 2001315154A JP 37183099 A JP37183099 A JP 37183099A JP 37183099 A JP37183099 A JP 37183099A JP 2001315154 A JP2001315154 A JP 2001315154A
- Authority
- JP
- Japan
- Prior art keywords
- bumper
- injection
- gas
- injecting
- resin product
- 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
- 238000002347 injection Methods 0.000 title claims abstract description 44
- 239000007924 injection Substances 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000007789 gas Substances 0.000 claims abstract description 35
- 239000000463 material Substances 0.000 claims abstract description 26
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 21
- 229920005989 resin Polymers 0.000 claims abstract description 21
- 239000011347 resin Substances 0.000 claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000004743 Polypropylene Substances 0.000 claims abstract description 11
- 229910001873 dinitrogen Inorganic materials 0.000 claims abstract description 11
- -1 polypropylene Polymers 0.000 claims abstract description 11
- 229920001155 polypropylene Polymers 0.000 claims abstract description 11
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 230000002787 reinforcement Effects 0.000 abstract description 4
- 239000000243 solution Substances 0.000 abstract 1
- 210000003491 skin Anatomy 0.000 description 18
- 239000006260 foam Substances 0.000 description 9
- 239000012779 reinforcing material Substances 0.000 description 8
- 238000000465 moulding Methods 0.000 description 6
- 238000005187 foaming Methods 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000010107 reaction injection moulding Methods 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 210000002615 epidermis Anatomy 0.000 description 1
- 210000003195 fascia Anatomy 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Classifications
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/1703—Introducing an auxiliary fluid into the mould
- B29C45/1704—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3044—Bumpers
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ガス注入の射出工
法を利用して車両用バンパを製造する方法とこの時に製
造されるバンパに関するものであり、より詳細には、ガ
ス穴を形成する方法を採用したガス注入の射出工法とし
て、製品の表面に生ずるシンクマーク（sink mark；屈
曲痕）の問題を解決し、多数の補強リブを持つ単一部品
の表皮材バンパを製造することができる方法、及びフォ
ームや補強材がなくても各種の強度上の規制を満足する
ばかりでなくその機能性を最も向上させることができる
バンパ及びその製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a vehicle bumper using an injection method of gas injection and a bumper manufactured at this time, and more particularly, to a method of forming a gas hole. As a gas injection injection method that employs a method, it is possible to solve the problem of a sink mark (bending mark) generated on the surface of a product and to manufacture a single-part skin material bumper having a large number of reinforcing ribs. The present invention relates to a bumper that can not only satisfy various strength regulations without a foam or a reinforcing material but also improve the functionality of the bumper, and a method of manufacturing the bumper.
【０００２】[0002]
【従来の技術】一般に車両に対する既存のバンパシステ
ムは、表皮材（fascia）、ＥＡ（energy absorption）
フォームと補強材（reinforcement）の３重構造からな
る。バンパの表皮材として用いられる材料は、ポリプロ
ピレン、ＲＩＭ（reactioninjection molding）等が挙
げられ、２.５mph/５mph用が一般的に使用されている。
エネルギー吸収剤である前記ＥＡフォームは、発泡ポリ
プロピレン （expanded polypropylene）が用いられる
が、主に２.５mph用は１５倍の発泡、５mph用は３０倍
の発泡ポリプロピレンが使用される。また、補強材は、
スチール、アルミニウム、ＧＭＴ（glass mat thermopl
astic）等の材料が用いられる。2. Description of the Related Art Generally, existing bumper systems for vehicles include a skin material (fascia) and EA (energy absorption).
It has a triple structure of foam and reinforcement. Materials used as the skin material of the bumper include polypropylene, RIM (reaction injection molding), and the like, and those for 2.5 mph / 5 mph are generally used.
Expanded polypropylene is used for the EA foam, which is an energy absorber, and 15 times foaming is mainly used for 2.5 mph and 30 times foaming polypropylene is used for 5 mph. Also, the reinforcing material
Steel, aluminum, GMT (glass mat thermopl
astic).
【０００３】既存のバンパシステムによると、表皮材、
ＥＡフォームと補強材として三層に構成されることか
ら、その重量が重くなり、全体的な費用が高価となる。
また、それぞれのパートにより材料が異なることもあ
り、車両を分解・解体する際の作業性が低いという短所
がある。即ち、バンパの表皮材は、２.５mph/５mph用が
一般的に用いられ、ＥＡフォームの発泡率は、それぞれ
に２.５mph用は１５倍、５mph用は３０倍に調整して使
用される。また、補強材は、その構造を多少変更して
２.５mph用と５mph用にそれぞれ区別して製品を開発し
なければならない問題がある。According to the existing bumper system, a skin material,
Since the EA foam and the reinforcing material are configured in three layers, the weight is heavy and the overall cost is high.
Also, the material may be different for each part, and there is a disadvantage that workability when disassembling and disassembling the vehicle is low. That is, the skin material of the bumper is generally used for 2.5 mph / 5 mph, and the foaming ratio of EA foam is adjusted to 15 times for 2.5 mph and 30 times for 5 mph. . In addition, there is a problem that the reinforcing material has to be developed slightly differently for 2.5 mph and 5 mph by slightly changing the structure.
【０００４】[0004]
【発明の解決しようとする課題】したがって、本発明
は、上記の問題に鑑みて創案されたものであり、車両の
バンパシステムを既存の３つパートによる各種の材料か
ら単一部品の表皮材とし、各種の規制を満足することが
できるエネルキー吸収剤として、衝突する際における強
度を維持することができる補強用リブを採用し、特にガ
ス穴を形成するガス注入の射出工法を利用して補強用リ
ブの形成によるシンクマーク（sink mark）の生成を完
全に排除し、また車両の廃車時に単一部品の表皮材を容
易に解体と環境親和性を目指すことができるようにガス
注入の射出工法を利用するバンパ及びそのバンパの製造
方法を提供することにその目的がある。SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above-mentioned problems, and a vehicle bumper system is formed from a variety of existing three-part materials into a single-part skin material. As an energy absorbing agent that can satisfy various regulations, it adopts a reinforcing rib that can maintain the strength at the time of collision, especially for the reinforcement using the injection method of gas injection that forms gas holes The injection method of gas injection has been developed to completely eliminate the generation of sink marks due to the formation of ribs and to easily disassemble the single-piece skin material and achieve environmental friendliness when the vehicle is scrapped. It is an object to provide a bumper to be used and a method of manufacturing the bumper.
【０００５】[0005]
【課題を解決するための手段】前記目的を達成するため
に本発明においては、高強性ポリプロピレンを使用して
多数の補強用リブを含む１次樹脂製品を射出した後、一
定時間がたつと、垂直リブの延長部にあるガス穴を通じ
て窒素ガスを注入して単一部品の表皮材として最終の樹
脂製品を射出することを特徴とする。In order to achieve the above object, according to the present invention, after injecting a primary resin product containing a large number of reinforcing ribs using high-strength polypropylene, after a certain period of time, Nitrogen gas is injected through a gas hole in an extension of the vertical rib to inject a final resin product as a single-piece skin material.
【０００６】特に、前面バンパ樹脂製品を射出する時の
温度条件は２００〜２２０℃であり、圧力条件は４〜６
Ｍpaであり、１次樹脂製品を射出した後に窒素ガスを注
入するための遅延時間は１７.５〜１９.５秒であること
を特徴とする。また、後面バンパ樹脂製品を射出する時
の温度条件は２００〜２２０℃であり、圧力条件は５〜
７Ｍpaであり、１次樹脂製品を射出した後に窒素ガスを
注入するための遅延時間は１３.５〜１６.５秒であるこ
とを特徴とする。In particular, the temperature condition for injecting the front bumper resin product is 200 to 220 ° C., and the pressure condition is 4 to 6
Mpa, and a delay time for injecting nitrogen gas after injecting the primary resin product is 17.5 to 19.5 seconds. In addition, the temperature condition for injecting the rear bumper resin product is 200 to 220 ° C., and the pressure condition is 5 to 200 ° C.
7 MPa, and a delay time for injecting nitrogen gas after injecting the primary resin product is 13.5 to 16.5 seconds.
【０００７】また、内側にバンパの長さ方向に沿って並
んで多数の補強用リブ１４を持っており、上記リブ１４
の延長部位にあるガス穴１６を通じて窒素ガスを注入し
てシンクマークが生じないようにガス注入の射出工法に
より製造される高強性ポリプロピレン剤の単一部品の表
皮剤からなることを特徴とする。特に、上記リブ１４
は、３〜５mmの厚さとして少なくとも３つが備えられる
ことを特徴とする。[0007] A number of reinforcing ribs 14 are provided inside the bumper along the length direction thereof.
And a single-part skin material made of a high-strength polypropylene agent manufactured by an injection method of gas injection so as to prevent generation of a sink mark by injecting nitrogen gas through a gas hole 16 provided at an extension portion of the above. In particular, the rib 14
Is characterized in that at least three are provided with a thickness of 3 to 5 mm.
【０００８】[0008]
【発明の実施の形態】以下、添付図面を参照して本発明
を詳細に説明する。ガス注入の射出成形とは、一定量の
樹脂を注入した後に窒素ガスを注入して成形する工法で
ある。本発明では、上記工法によりＥＡフォームや補強
材を使わずにバンパ表皮剤だけで２.５mphの規制を満足
させるバンパ及びその製造方法を提供するものである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. Injection molding by gas injection is a method of molding by injecting a predetermined amount of resin and then injecting nitrogen gas. The present invention provides a bumper which satisfies the regulation of 2.5 mph only with a bumper skin agent without using an EA foam or a reinforcing material by the above-mentioned method, and a method for producing the bumper.
【０００９】表皮剤自体だけでは各種の規制（２.５mph
/５mph）を満足し難く、上記規制を満足させようとする
と製品の厚さが厚くなり、衝撃を補強するために形成す
る背面部位のリブによりバンパの前面にひどいシンクマ
ークが生ずることから、既存の射出工法による製品は、
商品性やその価値が劣っている。表皮剤自体単独で衝撃
に耐えながら、最小限の重量で衝撃に耐えるにはバンパ
の背面に厚いリブを補強する必要がある。しかしなが
ら、一般の射出工法を利用して製造すると、上記補強用
リブにより製品の表面にひどいシンクマークが生ずる。
そこで、本発明においては、リブの延長部位、即ちリブ
と表皮剤が合う（接合する）部位にガス穴を形成して表
面のシンクマークを除去することができるガス注入の射
出工法を採用した。Various regulations (2.5 mph) are required only for the epidermis itself.
/ 5 mph), it is difficult to satisfy the above regulations, the thickness of the product will be increased, and the rib on the back part formed to reinforce the impact will cause a bad sync mark on the front of the bumper, Products by the injection method of
The merchantability and its value are poor. It is necessary to reinforce a thick rib on the backside of the bumper to withstand the impact with the minimum weight while withstanding the impact by itself. However, when manufacturing using a general injection method, a severe sink mark is generated on the surface of the product due to the reinforcing ribs.
Therefore, in the present invention, an injection method of gas injection is used in which a gas hole is formed in an extended portion of the rib, that is, a portion where the rib and the skin agent meet (join), and a sink mark on the surface can be removed.
【００１０】製品のリブ形態は、衝突する時に強性を維
持するために垂直リブで補強する構造（structural fas
cia）とし、初期の衝突が発生する時に構造表皮剤が変
形しながらエネルギーを吸入し、表皮剤の両端にステー
イ（stay）を一切に形成して車体に装着することができ
るようにし、衝突の途中にエネルギーを吸入することに
なる。また、既存のバンパシステムは、表皮剤＋ＥＡフ
ォーム＋補強材からなるシステムであるが、バンパ表皮
剤だけで既存の２.５mphの規制を満足させるために各種
の材料を使用することができる。本発明では、再利用の
可能な熱可塑性樹脂であるＴＰＯ（PP）材料を用いた。[0010] The shape of the rib of the product is a structure which is reinforced with a vertical rib to maintain the strength in the event of a collision.
cia), when the initial collision occurs, the structural skin agent deforms, absorbs energy while deforming, and forms a stay at both ends of the skin agent so that it can be attached to the vehicle body. You will inhale energy on the way. Further, the existing bumper system is a system composed of a skin agent, an EA foam, and a reinforcing material. However, various materials can be used to satisfy the existing regulation of 2.5 mph only with the bumper skin agent. In the present invention, a TPO (PP) material which is a reusable thermoplastic resin is used.
【００１１】バンパ表皮剤だけにより既存の２.５mphの
規制を満足させるための材料特性としては、材料強度、
耐熱性、衝撃強度等のように全ての物性が重要である
が、その中でも最も重要な材料物性は屈曲強度及び屈曲
弾性率である。既存の２.５mphの、一般のバンパ構造に
用いられる材料は、補強剤が後面にあるので、柔らかい
タイプのポリプロピレンとしては、その屈曲弾性率が約
６,０００kg/cm2であれば満足させることができる。し
かし、表皮剤だけで既存のバンパ構造を満足させるため
には、多少固いタイプのポリプロピレンが要求されるの
で、屈曲弾性率が約１０,０００kg/cm2であれば最適の
製品構造として規格に対応する。以下の表１は、本発明
のバンパ製造方法により製造されるバンパ表皮剤と既存
のバンパカバーの材料別に物性評価結果を比較したもの
である。The material properties for satisfying the existing regulation of 2.5 mph only with the bumper skin agent include material strength,
All physical properties such as heat resistance and impact strength are important, and the most important material physical properties among them are flexural strength and flexural modulus. The material used for the existing bumper structure of 2.5 mph has a reinforcing agent on the rear surface, so that the soft type polypropylene should satisfy if its flexural modulus is about 6,000 kg / cm 2. Can be. However, in order to satisfy the existing bumper structure only skin agents, since some stiff type of polypropylene is required, corresponding to the standard as optimal product structure if flexural modulus of about 10,000 kg / cm 2 I do. Table 1 below compares the results of evaluating the physical properties of the bumper skin agent manufactured by the bumper manufacturing method of the present invention and the materials of the existing bumper cover.
【００１２】[0012]
【表１】 [Table 1]
【００１３】上記材料特性を有する製品を成形する条件
は次の通りである。ガス注入の射出工法によりバンパ表
皮剤のリブ構造を成形する時にシンクマークを最小化さ
せるために、製品の最適な成形条件をＣＡＥの解析と成
形の施行錯誤を重ねて樹脂射出の温度と窒素ガスの注入
条件をセッティングして最適な製品を製作した。The conditions for molding a product having the above-mentioned material properties are as follows. In order to minimize the sink mark when molding the rib structure of the bumper skin agent by the injection method of gas injection, the optimum molding conditions of the product are determined by CAE analysis and molding execution and error by repeating CAE analysis and resin injection temperature and nitrogen gas. The injection conditions were set to produce an optimal product.
【００１４】その中でも製品の射出・成形する時、プラ
スチック樹脂を射出してからガスを注入する遅延時間が
特に重要であり、その条件は次の通りである。本発明に
よる前面バンパの射出温度は２００〜２２０℃、望まし
くは２１０℃である。その圧力条件は４〜６Ｍpa、望ま
しくは５Ｍpaである。また、樹脂を射出した後にガスを
注入するための遅延時間は１７.５〜１９.５秒、望まし
くは１９.５秒であり、この条件の際にガスの爆発が最
小化され、樹脂の充填状態が一番良好であった。Among them, when injecting and molding a product, a delay time for injecting a gas after injecting a plastic resin is particularly important. The conditions are as follows. The injection temperature of the front bumper according to the present invention is 200-220C, preferably 210C. The pressure condition is 4 to 6 MPa, preferably 5 MPa. In addition, the delay time for injecting the gas after injecting the resin is 17.5 to 19.5 seconds, preferably 19.5 seconds. Under these conditions, the explosion of the gas is minimized, and the resin is charged. The condition was the best.
【００１５】また、後面バンパの構造は前面バンパとは
異なるので、射出温度は２２０〜２４０℃、望ましくは
２３０℃である。その圧力条件は５〜７Ｍpa、望ましく
は６.２Ｍpaである。また、樹脂を射出した後にガスを
注入するための遅延時間は１３.５〜１６.５秒、望まし
くは１４.５〜１５.８秒であり、この条件の際にガスの
爆発が最小化され、樹脂の充填状態が一番良好であっ
た。Further, since the structure of the rear bumper is different from that of the front bumper, the injection temperature is 220 to 240 ° C., preferably 230 ° C. The pressure condition is 5 to 7 MPa, preferably 6.2 MPa. Also, the delay time for injecting the gas after injecting the resin is 13.5 to 16.5 seconds, preferably 14.5 to 15.8 seconds. Under these conditions, the explosion of the gas is minimized. The state of filling with resin was the best.
【００１６】従って、適切な屈曲弾性率を持つ材料と共
に最適なガス注入の射出工法を利用することにより、Ｅ
Ａフォームや補強材を使わなくてもバンパ表皮剤だけで
既存の２.５mphの衝突規制を満足させる構造のバンパを
提供することができる。このように製造される本発明に
よるバンパ、即ちバンパ表皮剤は、添付した図１に示し
たように、表皮剤１２の背面に長さ方向に沿って並んだ
多数のリブ１４を備えており、リブ１４と表皮剤１２が
合う部位に形成したガス穴１６によりガス注入を通じて
表皮剤１２の表面に生ずるシンクマークの形成を完全に
排除することができる。[0016] Therefore, by utilizing an injection method of optimal gas injection with a material having an appropriate flexural modulus, E
A bumper having a structure that satisfies the existing 2.5 mph collision regulation can be provided only with the bumper skin agent without using the A foam or the reinforcing material. The bumper according to the present invention, i.e., the bumper skin material thus manufactured, includes a plurality of ribs 14 arranged along the length direction on the back surface of the skin material 12, as shown in FIG. Due to the gas holes 16 formed at the locations where the ribs 14 and the skin agent 12 meet, it is possible to completely eliminate the formation of sink marks generated on the surface of the skin agent 12 through gas injection.
【００１７】このように、１次樹脂を射出した後に適正
時間、例えば約１５秒がたつと、２次ガスを射出するガ
ス注入の射出工法により、表皮剤のみからなる単一部品
とすることにより、既存のバンパシステムに比べて約４
０％以上の軽量化及び約１０％以上の原価節減に寄与す
ることができる。As described above, when a proper time, for example, about 15 seconds, elapses after the primary resin is injected, a single component composed of only the skin agent is formed by the injection method of gas injection for injecting the secondary gas. , About 4 times compared to the existing bumper system
It can contribute to weight reduction of 0% or more and cost reduction of about 10% or more.
【００１８】即ち、表皮剤、ＥＡフォーム及び補強材の
三重構造からなる既存のバンパシステム部品と本発明に
よるバンパ表皮剤だけのガス注入の射出工法を比べる
と、組立部品の減少と工程水の節減により、重量は１台
当たり８ｋｇ以上に減少させることができ、部品原価は
１台当たり一千円以上が節減される。That is, comparing the existing bumper system component having a triple structure of the skin agent, the EA foam, and the reinforcing material with the injection method of gas injection using only the bumper skin agent according to the present invention, the number of assembly parts and the process water are reduced. As a result, the weight can be reduced to 8 kg or more per vehicle, and the cost of parts can be reduced by more than 1,000 yen per vehicle.
【００１９】また、既存の三重構造の部品を１つの部品
として開発することにより、組立部品の減少と工程水の
節減による工程単純化に寄与し、また、再利用の可能な
熱可塑性ポリプロピレンを使用するとともに、車両を廃
車する際において、単一部品としてその解体が容易であ
ることから、環境親和性（エコ）製品として優れた製品
とすることができる。Further, by developing the existing triple structure parts as one part, it contributes to the simplification of the process by reducing the number of assembly parts and the process water, and uses a reusable thermoplastic polypropylene. In addition, when a vehicle is scrapped, it is easy to disassemble it as a single part, so that it is possible to make the product excellent as an environmentally friendly (eco) product.
【００２０】[0020]
【発明の効果】以上説明のように本発明は、ガス注入の
射出工法を利用して製造したバンパ表皮剤を提供するこ
とにより、車両の軽量化及び費用節減の効果を奏し、ま
た、環境に優しいエコ製品とすることができる。As described above, according to the present invention, by providing a bumper skin agent manufactured by using the injection method of gas injection, it is possible to reduce the weight and cost of a vehicle and to reduce the environmental impact. It can be a gentle eco-product.
【図１】本発明によるバンパの断面構造を示す概略図で
ある。FIG. 1 is a schematic view showing a sectional structure of a bumper according to the present invention.
１０： バンパ １２： 表皮剤 １４：リブ １６： ガス穴 10: Bumper 12: Skin agent 14: Rib 16: Gas hole
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 4F206 AA11 AG07 AG28 AH24 AM32 AR025 AR065 AR11 AR12 JA05 JF06 JF46 JL02 JM05 JN27 JQ81 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4F206 AA11 AG07 AG28 AH24 AM32 AR025 AR065 AR11 AR12 JA05 JF06 JF46 JL02 JM05 JN27 JQ81
Claims (6)
補強用リブを含む１次樹脂製品を射出した後、一定時間
経過後に、垂直リブの延長部にあるガス穴を通じて窒素
ガスを注入して単一部品の表皮材として最終の樹脂製品
を射出することを特徴とするガス注入の射出工法を利用
するバンパの製造方法。1. After injecting a primary resin product including a large number of reinforcing ribs using high-strength polypropylene, after elapse of a predetermined time, nitrogen gas is injected through a gas hole in an extension of a vertical rib to simply A method of manufacturing a bumper using an injection method of gas injection, wherein a final resin product is injected as a skin material of one part.
条件は２００〜２２０℃であり、圧力条件は４〜６Ｍpa
であり、１次樹脂製品を射出した後に窒素ガスを注入す
るための遅延時間は１７.５〜１９.５秒であることを特
徴とする請求項１記載のガス注入の射出工法を利用する
バンパの製造方法。2. The temperature condition for injecting the front bumper resin product is 200 to 220 ° C., and the pressure condition is 4 to 6 MPa.
2. The bumper according to claim 1, wherein a delay time for injecting nitrogen gas after injecting the primary resin product is 17.5 to 19.5 seconds. Manufacturing method.
条件は２００〜２４０℃であり、圧力条件は５〜７Ｍpa
であり、１次樹脂製品を射出した後に窒素ガスを注入す
るための遅延時間は１３.５〜１６.５秒であることを特
徴とする請求項１記載のガス注入の射出工法を利用する
バンパの製造方法。3. The temperature condition for injecting the rear bumper resin product is 200 to 240 ° C., and the pressure condition is 5 to 7 MPa.
2. The bumper according to claim 1, wherein a delay time for injecting nitrogen gas after injecting the primary resin product is 13.5 to 16.5 seconds. Manufacturing method.
多数の補強用リブ（１４）を持っており、上記リブ（１
４）の延長部位にあるガス穴（１６）を通じて窒素ガス
を注入してシンクマーク（sink mark）が生じないよう
にガス注入の射出工法により製造される高強性ポリプロ
ピレン剤の単一部品の表皮剤からなることを特徴とする
請求項１記載のガス注入の射出工法を利用するバンパの
製造方法。4. A plurality of reinforcing ribs (14) arranged inside the bumper along the length direction thereof.
A single-part skin material of a high-strength polypropylene agent manufactured by an injection method of gas injection so that a nitrogen gas is injected through a gas hole (16) at an extension part of 4) so that a sink mark does not occur. The method for manufacturing a bumper using the injection method of gas injection according to claim 1, characterized by comprising:
少なくとも３つが備えられることを特徴とする請求項４
記載のガス注入の射出工法を利用するバンパの製造方
法。5. The at least three ribs 14 having a thickness of 3 to 5 mm are provided.
A method for manufacturing a bumper using the injection method of gas injection described above.
記載のガス注入の射出工法を利用するバンパの製造方法
により製造されたバンパ。6. A bumper manufactured by the method of manufacturing a bumper using the injection method of gas injection according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP37183099A JP2001315154A (en) | 1999-12-27 | 1999-12-27 | Producing method for bumper utilizing injection technique of gas injection, and bumper produced by the method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP37183099A JP2001315154A (en) | 1999-12-27 | 1999-12-27 | Producing method for bumper utilizing injection technique of gas injection, and bumper produced by the method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001315154A true JP2001315154A (en) | 2001-11-13 |
Family
ID=18499385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP37183099A Pending JP2001315154A (en) | 1999-12-27 | 1999-12-27 | Producing method for bumper utilizing injection technique of gas injection, and bumper produced by the method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001315154A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014046899A (en) * | 2012-09-04 | 2014-03-17 | Toyota Auto Body Co Ltd | Resin component for vehicle and manufacturing method of the same |
| US9987779B2 (en) | 2015-06-18 | 2018-06-05 | Ford Global Technologies, Llc | Integral locator pin for a plastic component |
| KR20190115346A (en) * | 2018-04-02 | 2019-10-11 | 현대자동차주식회사 | The unit of combined front bumper beam and front end module |
-
1999
- 1999-12-27 JP JP37183099A patent/JP2001315154A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014046899A (en) * | 2012-09-04 | 2014-03-17 | Toyota Auto Body Co Ltd | Resin component for vehicle and manufacturing method of the same |
| US9987779B2 (en) | 2015-06-18 | 2018-06-05 | Ford Global Technologies, Llc | Integral locator pin for a plastic component |
| KR20190115346A (en) * | 2018-04-02 | 2019-10-11 | 현대자동차주식회사 | The unit of combined front bumper beam and front end module |
| CN110341629A (en) * | 2018-04-02 | 2019-10-18 | 现代自动车株式会社 | Unit of combined front bumper beam and front-end module including crash box with double-section structure |
| KR102518654B1 (en) * | 2018-04-02 | 2023-04-06 | 현대자동차주식회사 | The unit of combined front bumper beam and front end module |
| CN110341629B (en) * | 2018-04-02 | 2024-11-29 | 现代自动车株式会社 | Unit comprising a combined front bumper beam and front end module of a crash box with a double-section structure |
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