JPS63128933A - Preparation of pressure container made of resin - Google Patents
Preparation of pressure container made of resinInfo
- Publication number
- JPS63128933A JPS63128933A JP27739086A JP27739086A JPS63128933A JP S63128933 A JPS63128933 A JP S63128933A JP 27739086 A JP27739086 A JP 27739086A JP 27739086 A JP27739086 A JP 27739086A JP S63128933 A JPS63128933 A JP S63128933A
- Authority
- JP
- Japan
- Prior art keywords
- welding
- side parts
- built
- molded product
- welding surface
- 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
- 239000011347 resin Substances 0.000 title claims abstract description 18
- 229920005989 resin Polymers 0.000 title claims abstract description 18
- 238000003466 welding Methods 0.000 claims abstract description 56
- 238000005304 joining Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 239000003365 glass fiber Substances 0.000 claims description 4
- 238000000465 moulding Methods 0.000 abstract description 16
- 238000002844 melting Methods 0.000 abstract description 6
- 230000008018 melting Effects 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 230000007812 deficiency Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000005855 radiation Effects 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
- 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
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
- B29C65/20—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
- B29C66/542—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining hollow covers or hollow bottoms to open ends of container bodies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Rigid Or Semi-Rigid Containers (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、ターボチャージャー付きエンジンの耐圧サー
ジタンクなどに利用される樹脂製圧力容器の製造方法に
関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for manufacturing a resin pressure vessel used as a pressure-resistant surge tank for a turbocharged engine.
［従来の技術］
近年、車両用エンジンに搭載されるサージタンクは、軽
量化とコストダウンを図る目的で、従来の金属製のもの
に代え、軽くて強いナイロン等の高分子材料を利用した
樹脂製のものを使用する傾向にある。この樹脂製サージ
タンクは、一体成形が困難であるため、現状ではその分
割成形品を接合して一体化する製法により作られている
。この際、一般に樹脂材料同士の接合には種々の溶着方
法の適用が考えられるものの、本発明者等の研究結果に
よると、この種タンクの接合には振動溶着や熱板溶着が
有用で実用的なものと推測される。[Conventional technology] In recent years, surge tanks installed in vehicle engines have been replaced with conventional metal ones in order to reduce weight and cost by using resins made of light and strong polymeric materials such as nylon. There is a tendency to use manufactured products. Since this resin surge tank is difficult to mold in one piece, it is currently manufactured by a manufacturing method in which separate molded products are joined and integrated. At this time, various welding methods can generally be considered for joining resin materials, but according to the research results of the present inventors, vibration welding and hot plate welding are useful and practical for joining this type of tank. It is assumed that
そして、更に評言すれば、振動溶着ではその接合面に脱
落し易いパリを発生する欠点を伴うため、熱板溶着が最
も望ましい接合手段と考えられる。Furthermore, since vibration welding has the drawback of generating flakes that easily fall off on the joint surface, hot plate welding is considered the most desirable joining method.
この熱板溶着は、接合しようとする分割成形品の溶着面
を数百度に加熱した熱板の近傍で該熱板を挟み対向配置
し、各溶着面が熱板からの輻射熱により加熱されて半溶
融状に軟化したならば、両者を加圧衝合して適当な圧着
状の下に接合する、というプロセスによるものである。In this hot plate welding, the welding surfaces of the split molded products to be joined are placed near hot plates heated to several hundred degrees, with the hot plates sandwiched in between, and each welding surface is heated by radiant heat from the hot plates, resulting in half of the welded parts. Once they have softened into a molten state, they are brought together under pressure and joined together under an appropriate pressure bond.
［発明が解決しようとする。問題点］
ところが、この熱板溶着により接合したサージタンクに
おいても、その接合部の強度に今一つ欠ける問題があり
、特にターボチャージャー仕様エンジンのように内圧の
大きい耐圧サージタンクの用途に適用する場合には強度
不足を否めない。具体的には、ターボ用サージタンクで
はあらゆる条件下において最大的１．２Ｋｇ／ｃ−の圧
力が掛かることがあり、耐久性を考慮すると初期室温破
壊圧が５゜０Ｋｇ／ｃＪ 〜１５．ＯＫｇ／ｃ−必要と
なるが、これに対し現用品（ノンターボ用）では、その
初期室温破壊圧が１．５〜２．０Ｋｇ／ｃＪの範囲にと
どまるものが実用化されているにすぎない。[The invention attempts to solve the problem.] Problems] However, even with surge tanks joined by hot plate welding, there is a problem that the strength of the joint is still lacking, especially when applied to pressure-resistant surge tanks with high internal pressure such as turbocharged engines. cannot deny that it lacks strength. Specifically, in a turbo surge tank, a maximum pressure of 1.2 kg/c- can be applied under all conditions, and considering durability, the initial room temperature burst pressure is 5.0 kg/cJ to 15.0 kg/cJ. OKg/c- is required, but on the other hand, current products (for non-turbo use) whose initial room temperature burst pressure remains in the range of 1.5 to 2.0 Kg/cJ are only in practical use.
このような破壊圧の低さは、勿論その接合部分での接合
強度の不足に負うものであるが、かかる接合強度低下原
因の一つに、分割成形品の溶着フランジ面（分割面）・
における皮りの発生が考えられる。この種のサージタン
クは、通常耐圧性向上のためガラス繊維等の添加物が混
入され、接合前の分割成形品は各々金型成形により成形
される。This low bursting pressure is of course due to the lack of joint strength at the joint, but one of the causes of this decrease in joint strength is the welded flange surface (split surface) of the split molded product.
It is possible that peeling occurs on the skin. In this type of surge tank, additives such as glass fiber are usually mixed to improve pressure resistance, and the divided molded products are each formed by molding before joining.
ところが、−側に給気管等を一体に突設する分割成形品
を金型成形により製作すると、「ひけ」を生じるととも
に、ガラス繊維の配向により「反り」を不可避的に生じ
るものとなる。しかるに、このような原因で溶着面に「
反り」を生じたものでは、前記熱板溶着によりその全周
に亙り高い接合強度を得ることができない。つまり、他
の溶着法、例えば前記の振動溶着であれば、仮台その溶
着面に多少の「反り」があっても加圧して振動すること
によりその変形分を吸収することができるが、熱板溶着
による場合、その溶着面を熱板の近傍に平行に配置して
該熱板からの熱輻射によりその全周を同時に加熱溶融す
るようにしなければならないため、溶着面にある限度（
例えば０．５ｍｍ）を超える程の「反り」がやると、熱
板に対する「そい」が悪くなって以後の溶着不良を来た
す。より詳しくは、熱板に対する溶着面各部の等高が前
記の限度を超える。と、溶着面の反り四部が熱板から離
れて当該部分での溶融不良を引き起こし、この状態で溶
着面を圧着してもこの部分での溶着が不完全となって十
分な接合強度が得られなくなるためである。However, when a split molded product having an integrally protruding air supply pipe or the like on the negative side is produced by molding, "sink marks" occur and "warp" inevitably occurs due to the orientation of the glass fibers. However, due to these reasons, "
If the material is warped, high bonding strength cannot be obtained over the entire circumference by the hot plate welding. In other words, with other welding methods, such as the above-mentioned vibration welding, even if the welding surface of the temporary stand is slightly warped, the deformation can be absorbed by applying pressure and vibrating. When plate welding is used, the welding surface must be placed parallel to the hot plate so that the entire circumference is simultaneously heated and melted by heat radiation from the hot plate.
For example, if the warp exceeds 0.5 mm, the warpage against the hot plate becomes poor, resulting in poor welding. More specifically, the height of each part of the welding surface with respect to the hot plate exceeds the above-mentioned limit. Then, the four warped parts of the welding surface separate from the hot plate, causing defective melting in that part, and even if the welding surface is crimped in this state, the welding in this part will be incomplete and sufficient joint strength will not be obtained. This is because it disappears.
この対策して、熱板加熱時における溶着面の溶融不足を
低減するように溶着面の加熱度合を増すことが考えられ
るが、こうすると熱板に近接する側で過熱による酸化劣
化を招き好ましくない。また、分割片の変形を拘束する
リブを内外に付加して、溶着面の「反り」発生を軽減す
ることも考えられる。しかし、分割成形品にかかる糸内
部を付けることは、サージタンク内部の吸気抵抗の増大
・を招くことあるいはコンパクトスペースの要求を満た
す上から制約され−る。さらに、多少の「反り」は成形
後加熱することにより矯正することができるが、熱溶着
の際に「反り」が復元し、前述のような溶融不良を引き
起こし十分な接合強度が得られない。As a countermeasure to this problem, it is possible to increase the degree of heating of the welding surface to reduce insufficient melting of the welding surface when heating the hot plate, but this is undesirable because it causes oxidative deterioration due to overheating on the side close to the hot plate. . It is also conceivable to add ribs on the inside and outside to restrain the deformation of the divided pieces to reduce the occurrence of "warpage" on the welding surfaces. However, attaching the threads to the interior of the split molded product is restricted because it increases the intake resistance inside the surge tank or because it satisfies the requirement for a compact space. Furthermore, although some degree of ``warpage'' can be corrected by heating after molding, the ``warp'' is restored during thermal welding, causing the aforementioned defective melting and making it impossible to obtain sufficient bonding strength.
本発明は、こめような独自の研究、考察結果を基に、耐
圧サージタンクのような樹脂製圧力容器を熱板溶着によ
り一体に接合するにさいし、その樹脂成形品の溶着面に
おける「反り」発生の問題を、簡単な手段により未然に
防止できるようにした改良された製造方法を提供しよう
とするものである。The present invention is based on the results of Komyo's original research and consideration.When joining resin pressure vessels such as pressure-resistant surge tanks together by hot plate welding, the present invention has been developed to prevent warping on the welded surface of the resin molded product. It is an object of the present invention to provide an improved manufacturing method that can prevent such problems by simple means.
［問題点を解決するための手段］
本発明は、上記問題点の解決手段として、少なくとも２
分割以上のガラス繊維を含んだ樹脂成形品を熱溶着接合
して圧力容器を製造するものにおいて、各分割面にフラ
ンジ部を構成すると共に、このフランジ部を徐変肉厚と
したことを特徴とするものである６
［作用］
すなわち、本発明者等の研究によると、その樹脂成形品
を金型成形により成形した場合、成形後これを脱型する
と、分割成形品が部分的に変形して、その溶着面に一定
のパターンで「反り」を生じることが確かめられている
。そこで本発明によると、溶着面における「反り」の最
も少ない部位を基準位置とし、「反り」の著しい部位に
連続した徐変肉盛りができるように、金型のフランジ部
を掘り込む構造とすることにより、金型から分割成形品
を脱型した後にそれが変形しても、その変形した状態で
溶着面が丁度フラットな面をなすものに矯正することが
できる。[Means for Solving the Problems] The present invention provides at least two solutions as means for solving the above problems.
A pressure vessel manufactured by heat welding and bonding resin molded products containing glass fibers in an amount greater than the number of divisions, characterized in that a flange portion is formed on each division surface, and the flange portion has a gradually varying wall thickness. 6 [Function] That is, according to research by the present inventors, when the resin molded product is molded by die molding, when it is removed from the mold after molding, the split molded product partially deforms. , it has been confirmed that the welded surface is warped in a certain pattern. Therefore, according to the present invention, the part of the welding surface with the least amount of "curvature" is set as the reference position, and the flange part of the mold is dug so that a continuous gradual build-up can be made in the part with the most "warp". Therefore, even if the split molded product is deformed after being removed from the mold, the welded surface can be corrected to form a flat surface in the deformed state.
［実施例］ 以下、本発明の一実施例を図面の簡単な説明する。[Example] Hereinafter, one embodiment of the present invention will be briefly described with reference to the drawings.
第１図は、圧力容器がサージタンクである場合について
、本発明に係る製法−例の概要を図示している。ここに
樹脂製サージタンクは、ターボエンジンに搭載する耐圧
用のもので、全体が６，６ナイロン等のガラス繊維強化
プラスチックで形成されるとともに、その分割位置を工
夫した上下二側りの分割成形品１１■を熱板溶着により
接合一体化してつくられる。これらの分割成形品工、■
は偏平異形状のサージタンクを、その上方偏在位置で略
矩形をなす横断面に切断するようにしたものである。す
なわち、上部の蓋部成形品Ｉは上壁−辺の部分とその近
傍部とを形成しており、その上壁成形品側の部分には２
本の給気管接続部ｄ７、ｄ２ （一方はインターターラ
経由用）を一体に突設している。他方下部の主央成形品
■は、蓋部成形品Ｉの部分を除いた残りのタンク本体部
分を一体に形成しており、その下部の一側にはキャブレ
ータに給気を導通する給気口Ｃを設けている。このよう
な偏在位置で分割成形品工、■を接合するようにしたも
のでは、その接合面に大きな引張応力が作用せず内圧に
対し強固な剛体構造のものが実現されるという利点があ
る。そして、分割成形品工、■にはその溶着面（分割面
）ｓｌ、ｓｌにフランジを一体に設けて溶着フランジ部
Ｆ１、Ｆ２を構成し、各々金型成形により成形される。FIG. 1 schematically shows an example of a manufacturing method according to the invention for the case where the pressure vessel is a surge tank. The resin surge tank here is a pressure-resistant one to be installed in a turbo engine, and is made entirely of glass fiber reinforced plastic such as 6,6 nylon, and is molded in two parts, the top and bottom, with a clever dividing position. Product 11■ is made by joining and integrating them by hot plate welding. These split molded parts, ■
In this example, a surge tank having an irregularly shaped flat shape is cut into a substantially rectangular cross section at an unevenly distributed position above the tank. That is, the upper lid molded product I forms the upper wall-side part and its vicinity, and the upper wall molded product side has two parts.
Main air supply pipe connection parts d7 and d2 (one for passing through the intertellar) are integrally provided in a protruding manner. On the other hand, the lower main center molded part ■ is integrally formed with the rest of the tank body except for the lid part molded part I, and on one side of the lower part there is an air supply port that conducts the supply air to the carburetor. C is provided. An advantage of joining the divided molded parts (2) at such unevenly distributed positions is that large tensile stress does not act on the joining surfaces, and a rigid structure that is strong against internal pressure can be realized. Then, in the split molding part (2), flanges are integrally provided on the welding surfaces (divided surfaces) sl and sl to form welding flange parts F1 and F2, which are each formed by die molding.
このような分割成形品Ｉ、■を熱板溶着により互いに接
合して一体化するにさいし、本発明では、金型成形後に
変形して特に大きな「反り」を生じる一方の分割成形品
即ち蓋部成形品Ｉについては、その溶着フランジ部Ｆ１
の特定部位に、第１図に誇張して示すように、その縦長
を増すように突出させる肉盛部Ｂ（図示ハツチング部分
）を形成するようにしている。すなわち、この肉盛部Ｂ
が無い従前の蓋部成形品Ｉでは、金型成形後の変形でそ
の溶着フランジ部Ｆ＋（溶着面ｓｌ）が同図に破線で示
すように、長辺部ＬＰの中央部を基準とした場合、その
短辺部ＳＰが反り上がる「反りＪを発生するものとなっ
ているが、この改良後の蓋部成形品Ｉでは、その溶着フ
ランジ部Ｆ＋ （溶着面ｓ１）の短辺部ＳＰに、変形
により長辺部ＬＰとの間で生じる等高に対応する縦長の
肉盛りを形成している。この肉盛部Ｂは、短辺部ＳＰで
高さが最大で、ここから長辺部ＬＰに向かう部分Ｌａ。When such split molded products I and (2) are joined to each other and integrated by hot plate welding, in the present invention, one of the split molded products, that is, the lid part, which deforms after molding and causes a particularly large "warp". Regarding molded product I, its welding flange portion F1
As shown in an exaggerated manner in FIG. 1, a built-up portion B (hatched portion in the figure) is formed at a specific portion of the plate so as to protrude to increase its vertical length. In other words, this built-up part B
In the conventional lid molded product I without a mold, the welded flange F+ (welded surface sl) is deformed after molding, as shown by the broken line in the same figure, when the center of the long side LP is taken as a reference. However, in this improved lid molded product I, the short side SP of the welding flange F+ (welding surface s1) is warped. Due to the deformation, a vertically elongated build-up corresponding to the same height between the long side LP and the long side LP is formed. The part La heading towards.
Ｌｂで徐々に薄くなり、長辺部ＬＰの中央部りには付加
されていない。そして、その短辺部ＳＰにおける余肉の
最大高さｈは、通常０．５〜１．０ｍｍ程度で足るもの
である。It gradually becomes thinner at Lb, and is not added to the center of the long side LP. The maximum height h of the extra thickness at the short side SP is usually about 0.5 to 1.0 mm.
しかして、かかる肉盛部Ｂを形成したものであると、短
辺部ＳＰの各部に金型成形後の変形で反り上がる高さ分
だけ予め肉盛りしているため、蓋部成形品Ｉをその特定
パターンでフリーに変形させると、変形後の状態で図示
の如く溶着フランジ部Ｆ、の下面の溶着面ｓ１には全周
にわたりフラット面がつくり出されることになる。従っ
て、この状態で対向する主央成形品■の溶着フランジ部
Ｆ２ （溶着面ｓ２）との間に熱板（図示省略）を介
在し熱板加熱すれば、その溶着面Ｓｌが全周に亙り均等
に加熱できて、溶融度合に過不足を生じることがない。However, if such a built-up part B is formed, each part of the short side part SP is built up in advance by the height that is warped due to deformation after molding, so the lid part molded product I is If it is freely deformed in the specific pattern, a flat surface will be created over the entire circumference of the welding surface s1 on the lower surface of the welding flange portion F as shown in the figure after the deformation. Therefore, if a hot plate (not shown) is interposed between the welding flange part F2 (welding surface s2) of the opposing main center molded product ■ in this state and the hot plate is heated, the welding surface Sl will cover the entire circumference. It can be heated evenly and there will be no excess or deficiency in the degree of melting.
かくして、蓋部成形品Ｉと主央成形品■とを圧着すれば
、両者の接合面には溶融不足による部分的な弱点の無い
均一で高い接合強度が保証できる。ちなみに、本発明に
係る図示例タイプの樹脂製サージタンクでは、その内圧
に対する初期破壊強度に５．０Ｋｇ／ｃＪ以上、最大１
０Ｋｇ／ｃＪを超える非常に高い接合強度が得られるこ
とが実証されている。Thus, by press-bonding the lid molded product I and the main center molded product (2), it is possible to guarantee a uniform and high bonding strength with no local weaknesses due to insufficient melting on the joint surfaces of the two. Incidentally, the resin surge tank of the illustrated example type according to the present invention has an initial breaking strength of 5.0 Kg/cJ or more and a maximum of 1
It has been demonstrated that very high bonding strengths exceeding 0 Kg/cJ can be obtained.
なお、この製法により熱板溶着した樹脂製サージタンク
では、その蓋部成形品Ｉを自由に変形させた状態で主夫
成形品■と接合するため、蓋部成形品Ｉの部分は初期の
金型成形寸法から全体が多少変形したものとなる。しか
し、前述した約０．５ｍｍ程度の反り上がりは、熱板溶
着の施工上では非常な不都合を来たすものの、サージタ
ンクの部分的な形状変化として見た場合には性能上何ら
問題なく、無視できる程度の僅かなものである。In addition, in the resin surge tank hot plate welded using this manufacturing method, the lid molded product I is joined to the househusband molded product ■ in a freely deformed state, so the lid molded product I part is the same as the initial mold. The overall shape is slightly deformed due to the molded dimensions. However, although the above-mentioned warpage of about 0.5 mm causes a great inconvenience when performing hot plate welding, when viewed as a partial shape change of the surge tank, it poses no problem in terms of performance and can be ignored. The extent of this is slight.
次いで、上記製法の熱板溶着に供する肉盛りした分割成
形品、即ち蓋部成形品Ｉの製造方法についても簡単に言
及しておく。溶着面（分割面）Ｓ、の短辺部ＳＰにかか
る肉盛部Ｂを付加形成する目的には種々の肉盛り手段が
案出されるが、最も簡単には該蓋部成形品Ｉの金型成形
時にこれを一体に成形しておくようにすればよい。本発
明ではこのような考え方から、その蓋部成形品工を成形
する金型にのコア側に、第３図、第４図に示すように、
成形後の変形を見込んで、その両側の短辺部ＳＰを成形
する部分Ｌａ％Ｌｂのフランジ成形キャビティＦＣに、
最大深さｈからテーパ面ｔａ。Next, a brief description will be given of the method for manufacturing the overlay molded product, ie, the lid molded product I, which is subjected to hot plate welding using the above method. Various build-up means have been devised for the purpose of additionally forming the build-up portion B on the short side SP of the welding surface (split surface) S, but the simplest method is to use a mold for the lid molded product I. What is necessary is to form this integrally at the time of molding. In the present invention, based on this idea, as shown in Figs. 3 and 4, on the core side of the mold for forming the lid part molding part,
In anticipation of deformation after molding, the flange molding cavity FC of the part La%Lb where the short side parts SP on both sides are molded,
Tapered surface ta from maximum depth h.
ｔｂをなす付加凹部Ｃａ、ｃｂを形成するようにしてい
る。すなわち、このようにすると、既存のこの種金型に
その所要部分で掘削加工を加えるだけで必要な蓋部成形
・品Ｉを入手することができる。Additional recesses Ca and cb forming the shape tb are formed. In other words, by doing this, it is possible to obtain the necessary lid part molding product I by simply adding excavation processing to the required portions of an existing mold of this type.
以上、一実施例を基に説明したが、本発明を適用する圧
力容器（樹脂製サージタンク）は、必ずしも第１図に示
す分割形態のものに限らないし、その肉盛部の高さも例
示の範囲に限るものではない。なお上記実施例の場合、
その分割成形品（工夫成形品）■の金型成形品には余り
「反り」を生じないため、他方の分割成形品（蓋部成形
品）■の溶着面Ｓ、のみ肉盛部Ｂを付けるようにしたが
、圧力容器（サージタンク）の分割位置、換言すれば分
割成形品の形状によっては、双方に肉盛りを付けるよう
にしてもよい。Although the above description has been made based on one embodiment, the pressure vessel (resin surge tank) to which the present invention is applied is not necessarily limited to the divided form shown in FIG. It is not limited to a range. In the case of the above example,
Since the molded product of the split molded product (devised molded product) ■ does not cause much warpage, welding area B is only added to the welded surface S of the other split molded product (lid molded product) ■. However, depending on the dividing position of the pressure vessel (surge tank), in other words, depending on the shape of the divided molded product, build-up may be applied to both sides.
［発明の効果］
本発明は、以上に述べたように、接合する樹脂成形品の
少なくとも片方の溶着面に部分的な肉盛部を形成すると
いう簡便な手段により、溶着面の反りを防止し、熱板溶
着時に溶着面を均一に加熱溶融することができるから、
その部分的な接合不良による強度不足の問題を有効に解
決することができる。[Effects of the Invention] As described above, the present invention prevents warpage of the welding surface by a simple means of forming a partial build-up on at least one welding surface of resin molded products to be joined. , because the welding surface can be uniformly heated and melted during hot plate welding,
The problem of insufficient strength due to partial poor bonding can be effectively solved.
第１図は本発明の一実施例に係る樹脂製サージタンクの
製造方法を示す正面図である。第２図はその蓋部成形品
の平面図である。第３図と第４図は蓋部成形品成形用金
型を示し、第３図は第２図のＸ−Ｘ線断面に相当する断
面図であり、第４図は同Ｙ−Ｙ線断面に相当する断面図
である。
Ｉ・・・分割成形品（蓋部成形品）
■・・・分割成形品（工夫成形品）
Ｆ、 、Ｆ２・・・溶着フランジ部
ＳＩ、Ｓ２・・・溶着面
ｓｐ・・・短辺部
ＬＰ・・・長辺部
Ｂ・・・肉盛部FIG. 1 is a front view showing a method of manufacturing a resin surge tank according to an embodiment of the present invention. FIG. 2 is a plan view of the lid molded product. 3 and 4 show the mold for forming the lid part molded product, FIG. 3 is a cross-sectional view corresponding to the cross section taken along the line X-X in FIG. 2, and FIG. 4 is a cross-sectional view taken along the line Y-Y in the same figure. FIG. I...Divided molded product (lid molded product) ■...Divided molded product (devised molded product) F, , F2...Welded flange part SI, S2...Welded surface sp...Short side part LP... Long side part B... Overlay part
Claims (1)
を熱溶着接合して圧力容器を製造するものにおいて、各
分割面にフランジ部を構成すると共に、このフランジ部
を徐変肉厚としたことを特徴とする樹脂製圧力容器の製
造方法。In a pressure vessel manufactured by heat-welding and joining resin molded products containing at least two or more divided glass fibers, a flange is formed on each divided surface, and this flange has a gradually changing wall thickness. A method for manufacturing a characteristic resin pressure vessel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27739086A JPS63128933A (en) | 1986-11-19 | 1986-11-19 | Preparation of pressure container made of resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27739086A JPS63128933A (en) | 1986-11-19 | 1986-11-19 | Preparation of pressure container made of resin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63128933A true JPS63128933A (en) | 1988-06-01 |
| JPH0443502B2 JPH0443502B2 (en) | 1992-07-16 |
Family
ID=17582866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27739086A Granted JPS63128933A (en) | 1986-11-19 | 1986-11-19 | Preparation of pressure container made of resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63128933A (en) |
-
1986
- 1986-11-19 JP JP27739086A patent/JPS63128933A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0443502B2 (en) | 1992-07-16 |
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