JP3236655B2 - Blow molding made double-wall structure and a method of manufacturing - Google Patents

Blow molding made double-wall structure and a method of manufacturing

Info

Publication number
JP3236655B2
JP3236655B2 JP8977992A JP8977992A JP3236655B2 JP 3236655 B2 JP3236655 B2 JP 3236655B2 JP 8977992 A JP8977992 A JP 8977992A JP 8977992 A JP8977992 A JP 8977992A JP 3236655 B2 JP3236655 B2 JP 3236655B2
Authority
JP
Japan
Prior art keywords
wall
blow molding
portion
parisun
made double
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 - Fee Related
Application number
JP8977992A
Other languages
Japanese (ja)
Other versions
JPH05254001A (en
Inventor
治弘 遠藤
Original Assignee
キョーラク株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by キョーラク株式会社 filed Critical キョーラク株式会社
Priority to JP8977992A priority Critical patent/JP3236655B2/en
Publication of JPH05254001A publication Critical patent/JPH05254001A/en
Application granted granted Critical
Publication of JP3236655B2 publication Critical patent/JP3236655B2/en
Anticipated expiration legal-status Critical
Application status is Expired - Fee Related legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42Component parts, details or accessories; Auxiliary operations
    • B29C49/48Moulds
    • B29C49/4802Moulds with means for locally compressing part(s) of the parison in the main blowing cavity
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42Component parts, details or accessories; Auxiliary operations
    • B29C49/48Moulds
    • B29C49/4802Moulds with means for locally compressing part(s) of the parison in the main blowing cavity
    • B29C2049/4807Moulds with means for locally compressing part(s) of the parison in the main blowing cavity by movable mould parts in the mould halves
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42Component parts, details or accessories; Auxiliary operations
    • B29C49/48Moulds
    • B29C49/4802Moulds with means for locally compressing part(s) of the parison in the main blowing cavity
    • B29C2049/4812Moulds with means for locally compressing part(s) of the parison in the main blowing cavity and welding opposite wall parts of the parisons or preforms to each other
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/04Extrusion blow-moulding

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【産業上の利用分野】本発明は、熱可塑性樹脂材料をブロー成形することにより製造された互に対向する一方の壁と他方の壁とを有する中空のブロー成形製二重壁構造体およびその製造方法に関するものである。 BACKGROUND OF THE INVENTION This invention includes a hollow blow molding made double-walled structure having a one wall and the other wall mutually opposing produced by blowing a thermoplastic resin material and its a method for manufacturing.

【0002】 [0002]

【従来の技術】従来、この種のブロー成形製二重壁構造体としては、次に説明するものがある。 Conventionally, as a blow molding made double-wall structure of this kind, there is described below.

【0003】図13に示すように、パリスンをエアブローして一体に形成した中空の板体を主構成体とし、かつ主構成体は内部に左面板101と右面板102とにわたり一体に形成されたパリスンの一部による所要数の補強板103を所要位置に有する熱可塑製樹脂製建具(特開昭58−101988号公報参照)。 [0003] As shown in FIG. 13, a main structure of the hollow plate body formed integrally by air blow Parisun, and the main structure is formed integrally over the left side plate 101 and right surface plate 102 Doo therein a thermoplastic resin fittings having a desired number of the reinforcing plate 103 in accordance with some Parisun the required position (see JP-a-58-101988).

【0004】 [0004]

【発明が解決しようとする課題】上記従来の技術は、成形時に補強板に極端な薄肉部分が発生したり破断部分が生じ易い上、剛性をあまり大きくすることができないという問題点がある。 THE INVENTION Problems to be Solved The prior art, on the extreme thin portion is likely to occur or broken portion occurred in the reinforcing plate at the time of molding, there is a problem that can not be increased very much rigidity.

【0005】そこで、剛性を大きくするために補強板の肉厚を厚肉とすると、成形後の収縮のため左右両面板の前記補強板が結合された部位の外面にひけやそりが発生して外観が悪くなるという問題点がある。 [0005] Therefore, when the thick wall thickness of the reinforcing plate in order to increase the rigidity, because of shrinkage after molding, shrinkage or warpage occurs in the outer surface of a portion the reinforcing plate is bonded to the right and left sided plates there is a problem that the appearance is poor Te.

【0006】これを避けるため、図14に示すように互に隣接する補強板203A,203B間の間隔を狭くして剛性を増大させることも考えられるが、これとても前記間隔をあまり狭くすると、成形時にパリスンの膨張不良が発生する上、金型構造が複雑化して金型コストが高価なものとなるという問題点がある。 [0006] To avoid this, a reinforcing plate 203A adjacent each other as shown in FIG. 14, it is conceivable to increase the rigidity and reduce the distance between 203B, when too narrow it very the gap, forming sometimes on expansion failure occurs in Parisun, there is a problem that the mold structure is complicated mold cost becomes expensive.

【0007】本発明は、上記従来の技術の有する問題点に鑑みてなされたものであって、剛性等の機械的強度を増大させるとともに、外面にひけやそりが発生せず外観の良好なブロー成形製二重壁構造体およびその製造方法を実現することを目的とするものである。 [0007] The present invention, which has been made in view of the problems of the prior art, along with increasing the mechanical strength such as rigidity, good blow appearance without sink marks and warpage is generated in the outer surface it is an object to realize molding made double-wall structure and a manufacturing method thereof.

【0008】 [0008]

【課題を解決するための手段】上記目的を達成するため、本発明のブロー成形製二重壁構造体は、熱可塑性樹脂材料をブロー成形することにより製造された互に対向する一方の壁と他方の壁とを有する中空の二重壁構造体であって、前記一方の壁と前記他方の壁との間には、 Means for Solving the Problems] To achieve the above object, a blow molding made double-walled structure of the present invention, and one wall of the thermoplastic resin material to each other face was prepared by blow molding a hollow double-walled structure having the other wall, between said one wall and the other wall, an outer
側から見えないように板状のリブが一体に形成されており、前記リブの前記一方の壁との溶着部近傍の内部には Plate-shaped ribs so as not to be visible from the side are formed integrally in the interior of the welded portion near said one wall of the rib
空隙部が形成されていることを特徴とするものである。 It is characterized in that the air gap is formed.

【0009】また、本発明のブロー成形製二重壁構造体の製造方法は、熱可塑性樹脂材料をブロー成形することにより、互に対向する一方の壁と他方の壁とを有する中空の二重壁構造体を製造する方法であって、型開きした金型間に溶融したパリスンを押出したのち型閉じし、ついで、前記パリスンの他方の壁となる部分の一部を一方 [0009] The manufacturing method of blow molding made double-walled structure of the present invention, by blowing a thermoplastic resin material, a hollow double and a one wall and the other wall mutually opposing a method of manufacturing a wall structure, the Parisun melted between mold open and mold was closed later type extruded, then one part of the portion to be the other wall of the Parisun
の壁となる部分へ向けて突出変形させることにより前記 Wherein by projecting deformed toward the wall and become part of the
一方の壁となる部分に当接させて溶着部および前記溶着部の近傍に空隙を形成したのち、前記パリスン内に加圧流体を導入して膨張させることによって金型キャビティの形状に成形すると同時に、前記空隙の開放側を溶着一体化させて前記一方の壁との溶着部近傍の内部に空隙部を有する板状のリブを外側から見えないように形成することを特徴とするものである。 After forming the voids in the vicinity of it is brought into contact with the portion to be the one wall welded portion and the weld portion, when forming the shape of the mold cavity by inflating by introducing a pressurized fluid into said Parisun simultaneously , it is characterized in that formed invisibly to a plate-like rib having a gap portion inside the welded portion near the welded integrated so the one with the wall open side of the gap from the outside.

【0010】 [0010]

【作用】 板状のリブの一方の壁との溶着部近傍の内部に空隙部を形成することにより、 板状のリブの肉厚をあたかも厚肉とした如く強度が大となり、剛性等の機械的強度が増大するとともに、成形時に板状のリブの結合している部位の一方の壁外面にひけやそりが発生しない。 By forming the gap portion in the interior of the welded portion near the [action] plate-shaped one wall of the rib, the strength as was though thick wall thickness of the plate-shaped ribs becomes large, the rigidity machine with strength is increased, shrinkage or warpage does not occur in one wall outer surface of the portion are bonded plate-shaped rib and at the time of molding.

【0011】本発明のブロー成形製二重壁構造体は、剛性等の機械的強度が要求される、電気機器や家具等のハウジングパネル、リヤーシェルフやコンソールボックス等の自動車部品、キャリングケースやコンテナ等の容器に適している。 [0011] Blow molding made double-walled structure of the present invention, the mechanical strength such as rigidity is required, electrical appliances and furniture such as housing panels, automobile parts such as rear shelf or console boxes, carrying case or container It is suitable for container and the like.

【0012】 [0012]

【実施例】本発明の実施例を図面に基いて説明する。 It is described with reference to examples of the embodiment of the present invention with reference to the drawings.

【0013】図1は第1実施例のブロー成形製二重壁構造体の要部断面斜視図、図2はその平面図である。 [0013] Figure 1 is a fragmentary sectional perspective view of a blow molding made double-wall structure of the first embodiment, FIG. 2 is a plan view thereof.

【0014】本実施例は、熱可塑性樹脂材料をブロー成形することにより製造された互に対向する一方の壁1と他方の壁2とを有し、その全周面が端壁6にて閉塞された中空の二重壁構造体であって、一方の壁1と他方の壁2の間には互に間隔をおいて2本の板状のリブ3が外側 [0014] This example, closes the thermoplastic resin material and a mutually opposite one wall 1 and the other wall 2 produced by blow-molding, the entire peripheral surface at the end wall 6 a hollow double-walled structure that is, one of the walls 1 and two plate-like ribs 3 mutually spaced between the other wall 2 outer
から見えないように前記各壁1,2と一体に形成されており、各リブ3の一方の壁1と溶着部近傍の内部にはそれぞれ空隙部4が形成されている。 From the are formed integrally with each wall 1 to be invisible, respectively in the interior of the one welded portion near the wall 1 of the gap portion 4 of each rib 3 is formed. 加えて、空隙部4 In addition, air gap 4
の両端部は中実部3Aにより閉塞されており、各リブ3 The both ends are closed by solid portions 3A, each rib 3
以外の部分は中空部5となっている。 Portions other than has a hollow portion 5.

【0015】一方の壁1、他方の壁2、端壁6および [0015] One of the wall 1, the other wall 2, the end wall 6 and the plate
状のリブ3は、後述するように1個のパリスンから一成形サイクルで一体に形成されたものであって、前記空隙部4を設けたことにより板状のリブ3の外面の形状は一方の壁1から他方の壁2に向かって先細りのテーパー状に形成される。 Jo ribs 3, which has been integrally formed in one molding cycle from one Parisun As described below, the shape of the outer surface of the plate-shaped rib 3 by providing the gap portion 4 of one It is formed in a tapered tapered towards the wall 1 to the other wall 2. このため、あたかもリブの肉厚を厚肉とした如く強度が大となり、剛性等の機械的強度が向上する。 Therefore, as if the strength as to the thickness of the ribs and thick to improve the mechanical strength such as large, and the rigidity.

【0016】加えて、成形時の収縮による影響は一方の壁1のリブ3が溶着された部位における外面に現れることがなく、外観も良好なものとなる。 [0016] In addition, the effects of shrinkage during molding without appearing on the outer surface at the portion where the ribs 3 of one of the wall 1 is welded, becomes appearance good.

【0017】次に、図3に示す第2実施例について説明する。 [0017] Next explained is the second embodiment shown in FIG.

【0018】図3は第2実施例のブロー成形製二重壁構造体の一部を破断して示す斜視図である。 [0018] FIG. 3 is a perspective view in partial section of a blow molding made double-wall structure of the second embodiment.

【0019】本実施例は、図3に示すように空隙部14 The present embodiment, the air gap as shown in FIG. 3 14
の断面形状がほぼ円形のものであり、このためリブ13 It is intended cross-sectional shape of substantially circular and thus the ribs 13
の外形が空隙部14の部位において円弧状に突出した突出部と該突出部と他方の壁2とを接合する板状の中実部から構成されている。 The outer shape and a plate-shaped solid portions joining the projection and projecting portion and the other wall 2 protruding in an arc shape at the site of the void portion 14. 加えて、空隙部14の両端は中実部13Aにより閉塞されており、各リブ13以外の部分は中空部15となっている。 In addition, both ends of the gap portion 14 is closed by a solid portion 13A, a portion other than each rib 13 has a hollow portion 15. それ以外は第1実施例と同様であるので説明は省略する。 Description Since the others are the same as in the first embodiment will be omitted.

【0020】上記各実施例では、2本のリブを設けたものを示したがリブの数は必要に応じ1本あるいは3本以上とすることができることはいうまでもない。 [0020] In the above embodiments, it is of course possible to showed that provided the two ribs and the rib numbers if necessary one or three or more.

【0021】図4に、本発明に係るブロー成形製二重壁構造体を複写機CのハウジングパネルC 1に適用した例を示す。 [0021] FIG 4 shows an example of applying the blow molding made double-walled structure according to the present invention the housing panel C 1 of the copying machine C. このハウジングパネルC 1は曲面コーナ部C 2 The housing panel C 1 is curved corner C 2
を有し、対向する壁が二次元的にまたは三次元的に変化した立体形状をなすものであるが、本発明によれば、このような曲面コーナ部C 2の各壁も均一な肉厚とすることができる。 Have, but opposing walls is a component of two-dimensionally or three-dimensionally altered three-dimensional shape, according to the present invention, each wall also uniform wall thickness of such a curved corner portion C 2 it can be.

【0022】ここで、本願のブロー成形製二重壁構造体の製造方法の実施例について説明する。 [0022] Here, a description will be given of an embodiment of a method of manufacturing a blow molded steel double wall structure of the present application.

【0023】先ず、図1および図2に示した第1実施例のブロー成形製二重壁構造体の製造方法について図5乃至図8を参照しつつ説明する。 [0023] First, with reference to FIGS method for manufacturing the first embodiment blow molding made double-walled structure shown in FIGS.

【0024】図5に示すように、型開きした金型8A, As shown in FIG. 5, the mold open and mold 8A,
8B間に図示しない押出機の押出ヘッドより溶融したパリスン7を押出したのち、型閉じを行う。 After the Parisun 7 melted from extrusion head of an extruder (not shown) and extruded between 8B, performing mold closing.

【0025】ついで、他方の金型8Bにスライド自在に配設された板状のスライド部9をパリスン7に向けて突出すことにより、パリスン7の他方の壁となる部分の一部を一方の壁となる部分に向けて突出変形させることにより一方の壁となる部分に当接させて溶着部を形成する。 [0025] Then, by protruding toward plate-shaped slide 9 which is slidably disposed in the other mold 8B to Parisun 7, of one of the part of the portion of the other wall of Parisun 7 brought into contact with the portion to be the one wall by protruding deformed toward the portion to be the wall to form a welded portion. このとき、スライド部9の先端部により前記溶着部の近傍に空隙が形成される。 At this time, voids are formed in the vicinity of the welded portion by the tip portion of the sliding portion 9.

【0026】そののち、スライド部を図7に示す位置へ引込めるとパリスン7はその内圧により変形し、前記溶着部近傍に空隙を残した状態でその開放側であるリブ3 [0026] After that, the slide portion retracting and Parisun 7 to the position shown in FIG. 7 is deformed by internal pressure, the ribs 3 in the vicinity of the welded portion is its open side, leaving a gap
となる部分のほぼ中央部位が接触して溶着される。 Substantially central portion of the portion serving as is welded in contact.

【0027】上記のように、溶着部近傍に空隙を残した状態でその開放側を接触して溶着するのは、空隙部分の内圧とパリスンの内圧との相対的関係、また、スライド部9の移動速度およびタイミングを適宜に調節することにより達成される。 [0027] As described above, the welding in contact with its open side, leaving a gap in the vicinity of the welding unit, the relative relationship between the internal pressure of the inner pressure of the space portion and Parisun, also, the sliding portion 9 It is achieved by adjusting appropriately the moving speed and timing.

【0028】ついで、パリスン7に図示しない吹込針を突き刺してパリスン7内へ空気等の加圧流体を導入して膨張させることにより、パリスン7を金型キャビティの形状に成形して、一方の壁1、他方の壁2および端壁6 [0028] Then, by inflating by introducing a pressurized fluid such as air pierce the blow needle (not shown) Parisun 7 into Parisun within 7, by molding a Parisun 7 the shape of the mold cavity, one wall 1, other wall 2 and end walls 6
を形成すると同時に、前記リブ3の一方の壁1 との溶着 Simultaneously it makes a welding with one wall 1 of the rib 3
近傍の内部に空隙部4を残した状態でその他の部分を溶着して一体化させることにより、外形が一方の壁1から他方の壁2へかけて先細テーパー状の板状のリブ3 By integrating welded to other parts, leaving a space portion 4 inside parts near tapered plate-like rib 3 Ri tapered over outer shape from one wall 1 to the other wall 2
外側から見えないように形成する。 To form so as not to be visible from the outside.

【0029】次に、図3に示す第2実施例のブロー成形製二重壁構造体の製造方法について、図9乃至図12を参照しつつ説明する。 [0029] Next, the manufacturing method of the second embodiment blow molding made double-walled structure shown in FIG. 3 will be described with reference to FIGS. 9 to 12.

【0030】図9に示すように、型開した金型18A, As shown in FIG. 9, mold opening and mold 18A,
18B間に図示しない押出機の押出ヘッド20より溶融したパリスン17を押出して、その開放端を閉塞する。 The Parisun 17 melted from extrusion head 20 of an extruder (not shown) between 18B extruded, to close the open end.

【0031】ついで、図10に示すように、型閉じを行い、他方の金型18Bにスライド自在に配設された複数の導入孔19Aが互に間隔をおいて設けられたスライド部19をパリスン17に向けて突出すことにより、パリスン17の他方の壁となる部分の一部を突出変形させてパリスン7の一方の壁となる部分に溶着させて溶着部を形成する。 [0031] Then, as shown in FIG. 10, mold closing is performed, and the slide portion 19 in which a plurality of introduction holes 19A that are slidably disposed in the other mold 18B are provided mutually spaced Parisun by projecting towards 17, forms the other part of the wall and become part of the by protruding deformed is welded to the portion serving as one wall of Parisun 7 are welded portion of Parisun 17.

【0032】そののち、スライド部19を後退させ、各導入孔19Aより空気等の加圧流体を導入して断面形状がほぼ円形の空隙を形成したのち、図12に示す位置へ前記スライド部19を引込める。 [0032] After that, to retract the slide unit 19, after which the cross-sectional shape to form a substantially circular gap by introducing a pressurized fluid such as air from the inlet holes 19A, the slide unit 19 to the position shown in FIG. 12 the retraction.

【0033】ついで、パリスン17に図示しない吹込ピンを突き刺してパリスン17内へ空気等の加圧流体を導入して膨張させることにより、パリスン17を金型キャビティの形状に成形すると同時に、前記リブ13の一方の壁11 との溶着部近傍の内 に断面がほぼ円形の空隙部15を残した状態でその他の部分を溶着して一体化させることにより外形が一方の壁1の近傍が円弧状に突出し残りの部分が中実の板状のリブ13を形成する。 [0033] Then, by inflating by introducing a pressurized fluid such as air pierce a blow pin (not shown) Parisun 17 into Parisun in 17, and at the same time shaping the Parisun 17 in the shape of the mold cavity, the rib 13 by integrating welded to other parts in a state where one section to the inner section of the welded portion near the wall 11 of the leaves a substantially circular gap portion 15, the outer shape is the vicinity of one of the wall 1 circle of projecting arcuate remaining portion to form a plate-shaped rib 13 of the solid.

【0034】 [0034]

【発明の効果】本発明は、上述のとおり構成されているので、以下に記載するような効果を奏する。 According to the present invention, which is configured as described above, an effect as described below.

【0035】 板状のリブの一方の壁との溶着部近傍の内 [0035] Among the welded portion near the plate of one of the walls of the rib
に空隙部を形成したため、あたかもリブの肉厚を厚くしたのと同様に強度が大となり、剛性等の機械的強度が増大するとともに、一方の壁における板状のリブとの Since the formation of the air gap in part, though soluble rib wall thickness of the thickened's as well as the strength becomes large, the mechanical strength such as rigidity is increased, a plate-shaped ribs in one wall
部の外面にひけやそりが発生せず外観が良好となる。 Appearance without sink marks and warpage is generated on the outer surface of the wear part can be improved.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】本発明の第1実施例のブロー成形製二重壁構造体の要部断面斜視図である。 1 is a fragmentary cross-sectional perspective view of a blow molding made double-wall structure of the first embodiment of the present invention.

【図2】図1に示す第1実施例の平面図である。 2 is a plan view of the first embodiment shown in FIG.

【図3】本発明の第2実施例のブロー成形製二重壁構造体の一部を破断して示す斜視図である。 3 is a perspective view in partial section of a blow molding made double-wall structure of the second embodiment of the present invention.

【図4】本発明に係るブロー成形製二重壁構造体をハウジングパネルに適用した複写機の斜視図である。 Blow molding made double-walled structure according to the present invention; FIG is a perspective view of a copying machine which is applied to the housing panel.

【図5】図1および図2に示す第1実施例のブロー成形製二重壁構造体の製造方法の一工程であって、型開きした金型間にパリスンを押出した状態を示す要部断面図である。 [5] A one step of the manufacturing method of the blow molding made double-wall structure of the first embodiment shown in FIGS. 1 and 2, a main part showing a state was extruded Parisun between mold open and mold it is a cross-sectional view.

【図6】図5に示す工程についで、スライド部を突出してパリスンの一部を突出変形させて溶着部を形成する工程を示す要部断面図である。 [6] Then in the step shown in FIG. 5 is a fragmentary cross-sectional view showing a step projecting the slide portion is protruded deformed parts of Parisun and to form a welded portion.

【図7】図6に示す工程についで、スライド部を引込めてリブとなる部位に空隙を形成する工程を示す要部断面図である。 [7] Then in the step shown in FIG. 6 is a fragmentary cross-sectional view showing the step of forming a gap in a portion to be a rib retract the slide unit.

【図8】図7に示す工程についで、パリスンを膨張させて金型キャビティの形状に成形すると同時に空隙部を有するリブを形成する工程を示す要部断面図である。 Then the process shown in FIG. 8 7, is a fragmentary cross-sectional view showing the step of forming a rib having at the same time the gap portion when the molding is expanded to Parisun the shape of the mold cavity.

【図9】図3に示す第2実施例のブロー成形製二重壁構造体の製造方法の一工程であって、型開した金型間にパリスンを押出した状態を示す模式正面図である。 [9] A one step of the manufacturing method of the blow molding made double-wall structure of the second embodiment shown in FIG. 3, is a schematic front view showing a state was extruded Parisun between mold opening and mold .

【図10】図9に示す工程についで、スライド部を突出してパリスンの一部を突出変形させて溶着部を形成する工程を示す要部断面図である。 [10] Next to the step shown in FIG. 9 is a fragmentary cross-sectional view showing a step projecting the slide portion is protruded deformed parts of Parisun and to form a welded portion.

【図11】図10に示す工程についで、スライド部を引込める途中において、リブとなる部分に空隙を形成する工程を示す要部断面図である。 [11] Next to the step shown in FIG. 10, in the middle retract the slide unit, it is a fragmentary cross-sectional view showing the step of forming a gap in a portion to be a rib.

【図12】図11に示す工程についで、パリスンを膨張させて金型キャビティの形状に成形すると同時に空隙部を有するリブを形成する工程を示す要部断面図である。 [12] Next to the step shown in FIG. 11 is a principal part cross-sectional view showing a step of forming a rib having at the same time the gap portion when the molding is expanded to Parisun the shape of the mold cavity.

【図13】従来例の要部断面斜視図である。 13 is a fragmentary cross-sectional perspective view of a conventional example.

【図14】図13に示す従来例の変形例を示す要部断面斜視図である。 14 is a fragmentary cross-sectional perspective view showing a modification of the conventional example shown in FIG. 13.

【符号の説明】 1,11 一方の壁 2,12 他方の壁 3,13 リブ 3A,13A 中実部 4,14 空隙部中空部 6,16 端壁 7,17 パリスン 8A,8B,18A,18B 金型 9,19 スライド部 19A 導入孔 20 押出ヘッド [Reference Numerals] 1, 11 one wall 2, 12 other wall 3,13 ribs 3A, 13A solid portion 4,14 void portion 5 the hollow portion 6, 16 the end wall 7, 17 Parisun 8A, 8B, 18A, 18B die 9 and 19 slide portion 19A introducing hole 20 the extrusion head

Claims (2)

    (57)【特許請求の範囲】 (57) [the claims]
  1. 【請求項1】 熱可塑性樹脂材料をブロー成形することにより製造された互に対向する一方の壁と他方の壁とを有する中空の二重壁構造体であって、 前記一方の壁と前記他方の壁との間には、 外側から見え 1. A hollow double-walled structure having a one wall and the other wall a thermoplastic resin material which mutually opposed manufactured by blow molding, the said one wall other between the wall, visible from the outside
    ないように板状のリブが一体に形成されており、前記リブの前記一方の壁との溶着部近傍の内部には空隙部が形成されていることを特徴とするブロー成形製二重壁構造体。 Plate-like ribs are formed integrally so as not, the ribs of the one wall and the welding portion inside the blow-molding made double-walled structure, characterized in that the air gap is formed in the vicinity of body.
  2. 【請求項2】 熱可塑性樹脂材料をブロー成形することにより、互に対向する一方の壁と他方の壁とを有する中空の二重壁構造体を製造する方法であって、 型開きした金型間に溶融したパリスンを押出したのち型閉じし、ついで、前記パリスンの他方の壁となる部分の一部を一方の壁となる部分へ向けて突出変形させることにより前記一方の壁となる部分に当接させて溶着部および前記溶着部の近傍に空隙を形成したのち、前記パリスン内に加圧流体を導入して膨張させることによって金型キャビティの形状に成形すると同時に、前記空隙の開放側を溶着一体化させて前記一方の壁との溶着部近傍の内 By wherein the thermoplastic resin material to blow molding, a method for producing a hollow double-wall structure having a one wall and the other wall mutually opposing, mold opening and mold the molten Parisun and closed later type extruded between, then, the portion serving as the one wall by protruding deformed toward a part of the portion to be the other wall of the Parisun to one wall portion serving After forming the voids in the vicinity of the welded portion and the weld portion by the abutment, and simultaneously forming the shape of the mold cavity by inflating by introducing a pressurized fluid into the Parisun, the open side of the gap by integrally welded of welding the vicinity of said one wall
    に空隙部を有する板状のリブを外側から見えないよう So as not to obscure the plate-shaped rib having a gap portion from the outside part
    形成することを特徴とするブロー成形製二重壁構造体の製造方法。 Method for producing a blow molding made double-walled structure, and forming the.
JP8977992A 1992-03-13 1992-03-13 Blow molding made double-wall structure and a method of manufacturing Expired - Fee Related JP3236655B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8977992A JP3236655B2 (en) 1992-03-13 1992-03-13 Blow molding made double-wall structure and a method of manufacturing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8977992A JP3236655B2 (en) 1992-03-13 1992-03-13 Blow molding made double-wall structure and a method of manufacturing

Publications (2)

Publication Number Publication Date
JPH05254001A JPH05254001A (en) 1993-10-05
JP3236655B2 true JP3236655B2 (en) 2001-12-10

Family

ID=13980167

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8977992A Expired - Fee Related JP3236655B2 (en) 1992-03-13 1992-03-13 Blow molding made double-wall structure and a method of manufacturing

Country Status (1)

Country Link
JP (1) JP3236655B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7264422B2 (en) * 2004-03-25 2007-09-04 Owens-Corning Fiberglas Technology Inc. Rotary separator for mineral fibers
US7736721B2 (en) * 2006-08-10 2010-06-15 International Automotive Components Group North America, Inc. Hollow structural member with reinforced bulwark and process for producing same
WO2012094719A1 (en) * 2011-01-12 2012-07-19 Salflex Polymers Ltd. Hollow article with pillar structural members

Also Published As

Publication number Publication date
JPH05254001A (en) 1993-10-05

Similar Documents

Publication Publication Date Title
JP3326481B2 (en) The air bag cover integrally molded vehicle interior parts
JP2864160B2 (en) Molding process of the tubular member, and the apparatus
US7178647B2 (en) Impact absorbing member for vehicle
US5501890A (en) Invisible tear seam for an air bag deployment opening cover
US8349245B2 (en) Vehicle interior panel and producing method thereof
US6004498A (en) Method for molding resin to skin members
US5533311A (en) Thermoformed plastic refrigerator door
CN1310114A (en) Vehicle body structure
CA2408241A1 (en) Profile composite component and method for the production thereof
US7811497B2 (en) Multi-color injection molded door panel and process
US7081222B2 (en) Procedure and machinery for the molding and assembling of an assembled object
US6060144A (en) Hollow panel having cover material bonded thereto and process for producing same
US5976289A (en) Method of fabricating instrument panel
JPH08337182A (en) Beam for upper structure of vehicle, and manufacture of the beam
CA2006675C (en) Process and mold for producing a multilayer molded article
JP4948600B2 (en) Molding of thermoplastic hollow bodies equipped with embedded parts on the inner surface
GB2340433A (en) A method of manufacturing an automotive interior door panel
JP4553512B2 (en) Injection molding method of a molded article having a hollow portion
JP2004510616A (en) Structure for connecting the interior automotive interior skin portion
JP4270625B2 (en) Blow molding process of the panel
US5336460A (en) Process for making molded-in lamina hinge
JPH11105068A (en) Manufacture of flange coated with film
JP3050366B2 (en) Molding method and the mold apparatus of the laminate molded body
JP2003232294A (en) Blower fan divided body for assembly by hollow article forming method
US6726874B2 (en) Hollow article and its manufacturing method and apparatus thereof

Legal Events

Date Code Title Description
R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

FPAY Renewal fee payment (prs date is renewal date of database)

Year of fee payment: 9

Free format text: PAYMENT UNTIL: 20100928

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100928

Year of fee payment: 9

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110928

Year of fee payment: 10

LAPS Cancellation because of no payment of annual fees