JPH0645179B2 - Manufacturing method of synthetic resin fuel tank - Google Patents
Manufacturing method of synthetic resin fuel tankInfo
- Publication number
- JPH0645179B2 JPH0645179B2 JP60176672A JP17667285A JPH0645179B2 JP H0645179 B2 JPH0645179 B2 JP H0645179B2 JP 60176672 A JP60176672 A JP 60176672A JP 17667285 A JP17667285 A JP 17667285A JP H0645179 B2 JPH0645179 B2 JP H0645179B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- fuel tank
- parison
- blow nozzle
- blow
- 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.)
- Expired - Lifetime
Links
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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/48—Moulds
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/58—Blowing means
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/04—Extrusion blow-moulding
-
- 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
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7172—Fuel tanks, jerry cans
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は長辺方向の面に燃料注入口を有する合成樹脂製
燃料タンクに関する。TECHNICAL FIELD The present invention relates to a synthetic resin fuel tank having a fuel inlet on a surface in the long side direction.
従来乗用車等の燃料タンクには、金属が使用されてい
る。上記金属の燃料タンクはプレス成形によつて形状が
付与された２枚の金属板をシーム溶接ではり合わせ本体
形状をつくり、エバポパイプ、ブリザーパイプ、燃料注
入口等を後溶接で取付けているので、これらを所望の位
置に配置出来る。しかし、重く、腐食し易く、形状の自
由度が少ない等の欠点がある。そのため、軽量で、腐食
性がなく、形状の自由度の高い合成樹脂製燃料タンクの
開発が盛んに行なわれるようになつた。Conventionally, metal is used for fuel tanks of passenger cars and the like. Since the metal fuel tank is formed by seam welding two metal plates given a shape by press molding to form a main body, and an evaporative pipe, a blister pipe, a fuel inlet, etc. are attached by post welding. These can be arranged at desired positions. However, there are drawbacks such as being heavy, easily corroding, and having little freedom in shape. Therefore, the development of a synthetic resin fuel tank that is lightweight, has no corrosive properties, and has a high degree of freedom in its shape has been actively pursued.
ところで、近年乗用車も多様化し、燃料タンクの形状が
複雑化してきており、タンクの長辺方向の面に燃料の注
入口を取付けることが要望されるようになつたが、合成
樹脂製燃料タンクでは、短辺側の面に注入口を取付けざ
るを得ない欠点がある。By the way, passenger cars have become diversified in recent years, and the shape of the fuel tank has become complicated, and it has become necessary to attach a fuel inlet to the surface of the tank in the long side direction. However, there is a drawback that the injection port must be attached to the surface on the short side.
何故ならば、ブロー成形の場合し、通常長辺方向を縦に
して成形され、空気が吹込まれる吹込ノズルの取付位置
は、金型の上面又は下面で、その部分が注入口となるか
らである。即ち、ブロー成形の際、製品の長辺方向を横
にして横長とすると、第３図に示すように、金型１に合
わせてパリソン２の折径も多くしなければならず、それ
に伴なつてダイス３も大きくなり、装置のコストが高く
なる。さらに、金型１の長尺の上下のピンチオフ部４，
４がパリソン３を挾むので、発生するバリが多くなり、
バリ再生のための粉砕コストが高くなり、粉砕ロスも増
加する。This is because, in the case of blow molding, the blow nozzle is usually formed with the longer side oriented vertically, and the air is blown into the mold at the upper or lower surface of the mold, which is the injection port. is there. That is, in blow molding, if the long side direction of the product is set to be laterally long, as shown in FIG. 3, the folding diameter of the parison 2 must also be increased in accordance with the mold 1, which is accompanied by it. As a result, the die 3 also becomes large and the cost of the apparatus becomes high. Furthermore, the long upper and lower pinch-off portions 4 of the mold 1 are
Since 4 sandwiches parison 3, more burr is generated,
The crushing cost for burr regeneration increases, and the crushing loss also increases.
長辺方向を縦方向として、しかも長辺方向側面に燃料の
注入口を設ける場合には、第４図に示すように、金型１
に吹込用の空気をタンク内に導く空気通路５を設け、パ
リソン２を挾持し吹込ノズル６より空気ブローして成形
した後、金型１より外し、タンクの空気通路管７を適宜
切断して注入口とすることも一応考えられる。この場合
も、パリソン２の折径を大きくする必要から、ダイスが
大型でコスト高となり、またバリの発生量も多く、バリ
再生の粉砕費用が増大し、粉砕ロスも多くなる。さら
に、合成樹脂燃料タンクは、金属製のタンクに比べて剛
性が少ないので、注入口にフイラーパイプを連結する場
合、これに変形防止用の金具を内部挿入する必要があ
り、上記、第４図の金型１で成形した燃料タンクでは、
注入口の内径を後加工によつて金具の断面輪郭に対応す
るように仕上げる必要がある。When the fuel injection port is provided on the side surface of the long side in the longitudinal direction and the side surface of the long side is formed, as shown in FIG.
An air passage 5 that guides the air for blowing into the tank is provided, and the parison 2 is held and blown with air from a blowing nozzle 6 to mold, then removed from the mold 1, and the air passage pipe 7 of the tank is cut appropriately. It may be possible to use it as an inlet. Also in this case, since the folding diameter of the parison 2 is required to be large, the die is large and the cost is high, the amount of burrs is large, the crushing cost for burr regeneration is increased, and the crushing loss is also increased. Further, since the synthetic resin fuel tank is less rigid than a metal tank, it is necessary to internally insert a deformation preventing fitting into the filler pipe when connecting the filler pipe to the inlet. In the fuel tank molded with mold 1 of
It is necessary to finish the inner diameter of the inlet by post-processing so as to correspond to the cross-sectional contour of the metal fitting.
本発明は上記の事情に鑑み、金型の長辺方向を縦として
長辺側面の注入口が形成される位置に吹込ノズルを打込
み、ブロー成形と同時に注入口の内径も仕上げることが
出来る合成樹脂製燃料タンクの製造方法を提供すること
を目的とする。In view of the above-mentioned circumstances, the present invention is a synthetic resin capable of driving a blow nozzle at a position where a long-side direction of a mold is longitudinal and a side of a long-side side where an injection port is formed, and finishing the inner diameter of the injection port simultaneously with blow molding It is an object of the present invention to provide a method for manufacturing a fuel tank made of fuel.
本発明は上記の目的を達成するためになされたもので、
その要旨は、金型を賦形内壁が縦長になるように設置
し、パリソンの側部を金型で挾み、その挟まれた部分
に、金型の側部に設けられている吹込ノズル挿入孔か
ら、吹込ノズルを打込んで、パリソンの一部を吹込ノズ
ルの外周面と吹込ノズル挿入孔の内周面の間で管状に形
成し、吹込ノズルから空気を吹込んでブロー成形して、
管状部分を燃料注入口とする合成樹脂製燃料タンクの製
造方法、にある。The present invention has been made to achieve the above object,
The gist is to install the mold so that the shaped inner wall is vertically long, sandwich the side part of the parison with the mold, and insert the blow nozzle inserted in the side part of the mold into the sandwiched part. From the hole, hit the blow nozzle, form a part of the parison in a tubular shape between the outer peripheral surface of the blow nozzle and the inner peripheral surface of the blow nozzle insertion hole, blow air by blow air from the blow nozzle, blow molding,
A method for manufacturing a synthetic resin fuel tank having a tubular portion as a fuel inlet.
以下本発明を図面を参照して説明する。 The present invention will be described below with reference to the drawings.
第１図は、本発明の方法を実施する金型１１の一例を示
す片側正面図である。この金型１１の長手パーテイング
ライン部には、吹込ノズル挿入孔１２が設けられてい
る。また、金型１１を閉じた場合のパーテイングライン
部に形成される吹込ノズル挿入孔１２に対向する位置に
は、作動用油圧シリンダ１３によつて駆動され、上記ノ
ズル挿入孔１２に挿入或いは引抜自在な吹込ノズル１４
が設けられている。この吹入ノズル１４には栓部１４ａ
が設けられ、吹込ノズル挿入孔１２に挿入された際、こ
れを押圧するようになつている。FIG. 1 is a front view on one side showing an example of a mold 11 for carrying out the method of the present invention. A blow nozzle insertion hole 12 is provided in the longitudinal parting line of the mold 11. Further, a position opposite to the blow nozzle insertion hole 12 formed in the parting line portion when the mold 11 is closed is driven by an operating hydraulic cylinder 13 to be inserted into or pulled out from the nozzle insertion hole 12. Free blowing nozzle 14
Is provided. The blowing nozzle 14 has a plug portion 14a.
Is provided, and when it is inserted into the blow nozzle insertion hole 12, it is pressed.
この金型１１を用いて燃料タンクをブロー成形するに
は、先ず、金型１１を開きその間にパリソン２を位置さ
せる。このパリソン２の位置は、金型１１を閉じた場
合、上記吹込ノズル挿入孔１２が設けられているパーテ
イングライン部にパリソン２の一部が僅か挟持されるよ
うにする。次いで金型１１を閉じて、上記作動用油圧シ
リンダ１３を駆動して吹込ノズル１４を吹込ノズル挿入
孔１２に挿入する。この際、パリソン２の一部はパーテ
イングライン部で挟持されているため、吹込ノズル１４
の先端は、第２図に示すようにパリソン２の一部が管状
体を形成するようにしてパリソン２の内部に打込まれ
る。次いでエアブローすると、パリソン２は、キヤビテ
イー１５一ぱいに広がるとともに、パリソン２の一部が
吹込ノズル１４の外周面と、吹込ノズル挿入孔１２の内
周面と間に挟圧保持され、燃料タンク１６がブロー成形
されるとともに、内径の仕上げられた注入口１７が同時
に成形される。In order to blow mold a fuel tank using the mold 11, first, the mold 11 is opened and the parison 2 is positioned between them. The position of the parison 2 is such that, when the mold 11 is closed, a part of the parison 2 is slightly clamped by the parting line portion in which the blow nozzle insertion hole 12 is provided. Next, the mold 11 is closed, the hydraulic cylinder 13 for operation is driven, and the blow nozzle 14 is inserted into the blow nozzle insertion hole 12. At this time, a part of the parison 2 is sandwiched between the parting line portions, so the blowing nozzle 14
As shown in FIG. 2, the tip of is driven into the parison 2 so that a part of the parison 2 forms a tubular body. Next, when air blowing is performed, the parison 2 spreads over the entire cavity 15, and a part of the parison 2 is held between the outer peripheral surface of the blow nozzle 14 and the inner peripheral surface of the blow nozzle insertion hole 12 so that the fuel tank 16 is closed. At the same time as the blow molding, the injection port 17 with the finished inner diameter is molded.
冷却固化した後、金型１１を開いて、燃料タンクを取出
し、バリを除去すれば、何等後加工することなく、フイ
ラーパイプ用金具を取付けることが出来る。またダイス
を大型にすることもなく発生するバリの量も、上下のピ
ンチオフ部４，４によつて発生する量より僅か増加する
がその増加量は少なく、通常の方法の場合と大差がな
い。After cooling and solidifying, the mold 11 is opened, the fuel tank is taken out, and the burrs are removed, so that the filler pipe fitting can be attached without any post-processing. Further, the amount of burr generated without increasing the size of the die is slightly larger than the amount generated by the upper and lower pinch-off portions 4 and 4, but the increase amount is small, which is not much different from the case of the usual method.
以上述べたようの、本発明の方法は、金型の長辺方向側
面に、燃料注入口を有する燃料タンクを容易にブロー成
形するとともに、注入口の内径も同時に仕上げることが
出来るので、後加工が不要となる。さらに、ダイスを大
型にすることもなく、バリの増加量も少なく、合成樹脂
製燃料タンクのコスト上昇を軽減させるものである。As described above, according to the method of the present invention, the fuel tank having the fuel inlet can be easily blow-molded on the side surface in the long side direction of the mold, and the inner diameter of the inlet can be finished at the same time. Is unnecessary. Further, the size of the die is not increased and the amount of increase in burrs is small, which reduces the cost increase of the synthetic resin fuel tank.
第１図および第２図は、本発明の方法を実施する金型の
一例を示す片側正面図で、第１図は金型とパリソンの位
置関係を示す図、第２図は、燃料タンクをブロー成形し
た図、第３図は、長辺方向を横とした場合の金型とパリ
ソンとの関係を示す図、第４図は、長辺方向を縦とし
て、長辺側面に注入口を設ける本発明と異なる場合の金
型の説明図である。 ２……パリソン、４……ピンチオフ部、１１……金型、
１２……吹込ノズル挿入孔、１３……作動用油圧シリン
ダ、１４……吹込ノズル、１４ａ……栓部、１５……キ
ヤビテイ、１６……燃料タンク、１７……注入孔。1 and 2 are front views of one side showing an example of a mold for carrying out the method of the present invention, FIG. 1 is a view showing a positional relationship between the mold and a parison, and FIG. 2 is a view showing a fuel tank. Blow-molded drawing, FIG. 3 shows the relationship between the mold and the parison when the long side direction is horizontal, and FIG. 4 shows the long side direction as vertical and the injection port is provided on the long side surface. It is explanatory drawing of a metal mold | die in case different from this invention. 2 …… Parison, 4 …… Pinch off part, 11 …… Mold,
12 ... Blow nozzle insertion hole, 13 ... Actuating hydraulic cylinder, 14 ... Blow nozzle, 14a ... Plug part, 15 ... Cavity, 16 ... Fuel tank, 17 ... Fill hole.
Claims (1)
て、パリソンの側部を金型で挟み、その挟まれた部分
に、金型の側部に設けられている吹込ノズル挿入孔か
ら、吹込ノズルを打込んで、パリソンの一部を吹込ノズ
ルの外周面と吹込ノズル挿入孔の内周面の間で管状に形
成し、前記吹込ノズルから空気を吹込んでブロー成形し
て、前記管状部分を燃料注入口とすることを特徴とする
合成樹脂製燃料タンクの製造方法。Claims: 1. A mold is installed such that the shaped inner wall is vertically long, and the side of the parison is sandwiched between the molds, and the sandwiched portion is provided with a blow nozzle provided on the side of the mold. A blow nozzle is driven through the insertion hole, a part of the parison is formed into a tubular shape between the outer peripheral surface of the blow nozzle and the inner peripheral surface of the blow nozzle insertion hole, and air is blown from the blow nozzle to blow-mold it. A method for manufacturing a synthetic resin fuel tank, characterized in that the tubular portion is used as a fuel inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60176672A JPH0645179B2 (en) | 1985-08-10 | 1985-08-10 | Manufacturing method of synthetic resin fuel tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60176672A JPH0645179B2 (en) | 1985-08-10 | 1985-08-10 | Manufacturing method of synthetic resin fuel tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6237123A JPS6237123A (en) | 1987-02-18 |
| JPH0645179B2 true JPH0645179B2 (en) | 1994-06-15 |
Family
ID=16017699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60176672A Expired - Lifetime JPH0645179B2 (en) | 1985-08-10 | 1985-08-10 | Manufacturing method of synthetic resin fuel tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0645179B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2408479B (en) * | 2003-11-25 | 2008-03-26 | Linpac Mouldings Ltd | Method of blow-moulding and blow-moulded product |
| US20080191393A1 (en) * | 2007-02-08 | 2008-08-14 | Harris Mark A | Method for molding and sealing a hollow plastic tank |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6186236A (en) * | 1984-10-04 | 1986-05-01 | Kyoraku Co Ltd | Blow mold device |
-
1985
- 1985-08-10 JP JP60176672A patent/JPH0645179B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6237123A (en) | 1987-02-18 |
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