JPS58181617A - Molding of head-rest frame - Google Patents

Molding of head-rest frame

Info

Publication number
JPS58181617A
JPS58181617A JP57064740A JP6474082A JPS58181617A JP S58181617 A JPS58181617 A JP S58181617A JP 57064740 A JP57064740 A JP 57064740A JP 6474082 A JP6474082 A JP 6474082A JP S58181617 A JPS58181617 A JP S58181617A
Authority
JP
Japan
Prior art keywords
parison
molten resin
headrest
plate
pipe
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
Application number
JP57064740A
Other languages
Japanese (ja)
Other versions
JPS624209B2 (en
Inventor
Kenji Shimomura
下村 憲司
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ikeda Corp
Original Assignee
Ikeda Bussan Co Ltd
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 Ikeda Bussan Co Ltd filed Critical Ikeda Bussan Co Ltd
Priority to JP57064740A priority Critical patent/JPS58181617A/en
Publication of JPS58181617A publication Critical patent/JPS58181617A/en
Publication of JPS624209B2 publication Critical patent/JPS624209B2/ja
Granted legal-status Critical Current

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
    • B29C49/20Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements
    • 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
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50Details of extruders
    • B29C48/695Flow dividers, e.g. breaker plates
    • B29C48/70Flow dividers, e.g. breaker plates comprising means for dividing, distributing and recombining melt flows
    • 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
    • B29C49/20Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements
    • B29C2049/2008Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements inside the article
    • 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
    • B29C49/20Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements
    • B29C2049/2017Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements outside the article
    • 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
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07Flat, e.g. panels
    • 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
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00Other particular articles
    • B29L2031/30Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3005Body finishings
    • B29L2031/3023Head-rests

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To obtain a head-rest having a very strong fixing portion by a method wherein molten thermoplastic resin is extruded to obtain a pipe parison and a platelike molten resin near it, and the upper portion of a head rest stay is inserted between the above-said parison and the platelike molten resin and blow- molded. CONSTITUTION:Heated and molten thermoplastic resin is extruded by an extruder from the die 1 to mold a pipe parison 5 and a plate-like molten resin 7 at the position near the outside edge of this pipe-like parison 5. When the upper portion 11a of the head rest stay 11 is inserted between this parison 5 and the plate-like molten resin 7, the blow mold 12 is laid out at an intended position, closed and air is blown from the air inlet 9 to mold a hollow head rest frame 21. In this manner, the head rest stay can be fixed firmly between the pipe parison and the plate-like molten resin.

Description

【発明の詳細な説明】 本発明はヘッドレストフレームの成形方法に関し、更に
詳細に説明すると、熱可塑性樹脂より中空状に成形され
るヘッドレストフレームにヘッドレストステーを一体的
に固着させて成形するヘッドレストフレームの成形方法
に関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for molding a headrest frame, and more specifically, the present invention relates to a method for molding a headrest frame, and more specifically, a method for molding a headrest frame in which a headrest stay is integrally fixed to a headrest frame molded into a hollow shape from thermoplastic resin. Regarding the molding method.

近時、車両等のヘッドレストフレームを合成樹脂より成
形し、車両等の軽量化の要望を満足させるようになされ
ている。またこのヘッドレストフ[/−ムにヘッドレス
トステーを固着させる手段としてヘッドレストフレーム
にねじやボルト等の固着部材を介してヘッドレストステ
ーを固着させるものがあるが、ねじやボルト等の使用に
尖り重量が増加すると共に取付作業が煩雑でコストアン
プの原因となっている。更に中空成形品のヘッドレスト
フレームにヘッドレストステーを固着させる場合に、ヘ
ッドレストステーの上部を加熱溶融状態のパリソンに挿
入し、このパリソンにエアを吹込んでブロー成形する方
法があるが、ヘッドレストフレームのヘッドレストステ
ーの挿入された部分が薄肉となり、強度が弱くなる欠点
を有し、またヘッドレストステーの挿入される部分を厚
肉にする場合には強度を必要としない他の部分の肉厚を
厚肉とせざるを得ない欠点を有していた。、本発明の目
的はヘッドレストフレームを合成樹脂より成形し、車両
等の軽量化の要望を満たすと共に、ヘッドレストステー
の固着にねじやボルト等の固着部材を必要とせず、強度
を必要とするヘッドレストステーの固着部のみ強度を増
大させる事の出来る経済性に優れたヘッドレストフレー
ムの成形方法を提供するもので、以下図面を参照して詳
述する所より明らかとなるであろう。
BACKGROUND ART Recently, headrest frames for vehicles and the like have been molded from synthetic resin in order to satisfy the demand for lighter vehicles. In addition, as a means of fixing the headrest stay to the headrest frame, there is a method of fixing the headrest stay to the headrest frame via fixing members such as screws and bolts, but the use of screws and bolts causes sharpness and increases weight. At the same time, the installation work is complicated, which increases costs. Furthermore, when fixing a headrest stay to a headrest frame that is a hollow molded product, there is a method of blow molding by inserting the upper part of the headrest stay into a heated and molten parison and blowing air into this parison. This has the disadvantage that the part where the headrest stay is inserted becomes thin and the strength is weakened, and if the part where the headrest stay is inserted is made thick, other parts that do not require strength must be made thick. It had the disadvantage that it could not be obtained. An object of the present invention is to mold a headrest frame from synthetic resin to meet the demand for weight reduction of vehicles, etc., and to eliminate the need for fixing members such as screws and bolts to fix the headrest stay, and to create a headrest stay that requires strength. This invention provides an economical method for forming a headrest frame in which the strength of only the fixed portions can be increased, and this will become clear from the detailed description below with reference to the drawings.

第1図、第2図及び第3図には本発明に係るヘッドレス
トフレームの成形方法を実施するための一実施例の概略
が夫々示されており、押出成形機により加熱溶融された
熱可塑性樹脂をダイ1よりパイプ状のパリソン5と、こ
のパイプ状のバリノン5の外側縁に近接する位置に板状
の溶融樹脂7とを夫々押出す。
FIG. 1, FIG. 2, and FIG. 3 each show an outline of an embodiment for carrying out the method for molding a headrest frame according to the present invention, in which thermoplastic resin heated and melted by an extrusion molding machine is used. A pipe-shaped parison 5 and a plate-shaped molten resin 7 are extruded from the die 1 to a position close to the outer edge of the pipe-shaped Balinone 5.

前記ダイ1は第1図に示すように内部円筒部2と外部円
筒部3とを備え、この内部円筒部2と外部円筒部3間に
形成された第1の通路4においてパイプ状のパリソン5
が形成されると共に、外部円筒部3の一側部より外部円
筒部3の下端付近まで延び且つ第1の通路4と連通ずる
第2の通路6が形成され、この第2の通路6において板
状の溶2の通路6の途上には板状の溶融樹脂7の厚さを
調節するだめの調節パルプ8が設けられている。
The die 1 includes an inner cylindrical part 2 and an outer cylindrical part 3, as shown in FIG.
is formed, and a second passage 6 extending from one side of the outer cylindrical part 3 to near the lower end of the outer cylindrical part 3 and communicating with the first passage 4 is formed, and in this second passage 6, a plate is formed. A regulating pulp 8 for adjusting the thickness of the plate-shaped molten resin 7 is provided in the middle of the passage 6 of the melt 2.

第2図に示すように、前記パイプ状のパリソン5と板状
の溶融樹脂7とをダイ1より夫々押出し、コノハリノン
5と板状の溶融樹脂7との間にヘッドレストステー11
の上部11aを挿入した状態でブロー成形型12の所定
の位置に配置し、ブロー成形型12を閉じ、エア吹込口
9よりエアを吹込み、前記パリソン5及び板状の溶融樹
脂7をブロー成形型12に圧接させて中空状のヘッドレ
ストフレーム21を成形する。このヘッドレストフレー
ム21の成形時に、バリノン・5と板状の溶融樹脂7と
はヘッドレストステー11の上部11aを一体に埋設し
た状態で溶着される(第3図参照)。
As shown in FIG. 2, the pipe-shaped parison 5 and the plate-shaped molten resin 7 are extruded from the die 1, and a headrest stay 11 is placed between the conohalinone 5 and the plate-shaped molten resin 7.
The parison 5 and the plate-shaped molten resin 7 are placed in a predetermined position in the blow mold 12 with the upper part 11a inserted, the blow mold 12 is closed, and air is blown from the air inlet 9 to blow mold the parison 5 and the plate-shaped molten resin 7. A hollow headrest frame 21 is molded by pressing against the mold 12. When the headrest frame 21 is molded, the Balinon 5 and the plate-shaped molten resin 7 are welded together with the upper part 11a of the headrest stay 11 buried therein (see FIG. 3).

ヘッドレストフレーム21の成形後、ブロー成形型12
を開いてヘッドレストフレーム21を取出す。
After molding the headrest frame 21, the blow molding die 12
Open it and take out the headrest frame 21.

以上が本発明に係るヘッドレストフレームの成形方法の
一実施例の概略であるが、斯る方法に依れば、パイプ状
のパリソンと板状の溶融樹脂との間にヘッドレストステ
ーを確実強固に固着させる事カ出来、ヘンドレストフレ
ームのヘッドレストステーの挿入部分が薄肉に成形され
る虞れがなく、またー\ソドレストステーの固着にねじ
やボルト等の固着部材を必要とせず、捷た各部の強度を
最適状態に設定出来、軽量化の要望を十分に満足させル
ト共ニ著しく経済性に優れたヘンドレス)7L/−ムの
ト戊形方法を得る事が出来る。
The above is an outline of one embodiment of the method for molding a headrest frame according to the present invention. According to this method, the headrest stay can be reliably and firmly fixed between the pipe-shaped parison and the plate-shaped molten resin. There is no risk that the insertion part of the headrest stay of the hendrest frame will be formed into a thin wall, and there is no need for fixing members such as screws or bolts to fix the hendrest stay, and each part that has been cut out is It is possible to set the strength to an optimum state, to fully satisfy the demand for weight reduction, and to obtain a method of forming a 7L/-m which is extremely economical.

【図面の簡単な説明】[Brief explanation of drawings]

第1図、第2図及び第3図は本発明に係るヘッドレスト
フレームの成形方法の一実施例を夫々示すもので、第1
図は押出成形機のダイの一実施例の概略的ケリ[面説明
図、第2図はブロー成形型にパリツノと板状の溶融樹脂
とを押出し、パリソンと板状の浴融樹脂との間にヘッド
レストステーヲ挿入する状態を示す概略的斜視図、第3
図はヘッドレストステーがヘッドレストフレームニ一体
的ニ固着された状態を示す概略的断面説明図である。 図中、l・・ダイ、2・・・内部円筒部、3・・・外部
円筒部、4・・・第1の通路、5・・・パリソン、6・
第2の通路、7・・・板状の溶融樹脂、9・・・エア吹
込口、11・・・ヘッドレストステー、12・・・ブロ
ー成形型、21 ・ヘソドレストフレーム
FIGS. 1, 2, and 3 each show an embodiment of the method for molding a headrest frame according to the present invention.
The figure is a schematic illustration of one embodiment of the die of an extrusion molding machine. A schematic perspective view showing a state in which the headrest stay is inserted into the third
The figure is a schematic cross-sectional explanatory view showing a state in which the headrest stay is integrally fixed to the headrest frame. In the figure, l...die, 2...inner cylindrical part, 3...outer cylindrical part, 4...first passage, 5...parison, 6...
2nd passage, 7... Plate-shaped molten resin, 9... Air inlet, 11... Headrest stay, 12... Blow molding mold, 21 ・Navel rest frame

Claims (1)

【特許請求の範囲】[Claims] 熱可塑性樹脂を加熱溶融させて押出成形機より、パイプ
状のパリソンと、該パリソンの外側縁に近接させて板状
の溶融樹脂とを夫々押出し、前記・ζリノンと板状の溶
融樹脂との間にヘッドレストステーの上部を挿入した状
態でプロー成形型を閉じ、AiI記パリノン内部にエア
を吹込んで中空状のヘットレストフレームを成形し、前
記ヘッドレストステーをパリノンと板状の溶融樹脂との
溶着によりヘッドレストフレームに一体に固着させる事
を特徴トスるヘッドレストフレームの成形方法。
The thermoplastic resin is heated and melted, and a pipe-shaped parison and a plate-shaped molten resin are extruded from an extrusion molding machine in close proximity to the outer edge of the parison. Close the blow mold with the upper part of the headrest stay inserted between them, blow air into the inside of the AiI parinon to form a hollow headrest frame, and then weld the headrest stay with the parinon and a plate-shaped molten resin. A method of forming a headrest frame that is characterized by being integrally fixed to the headrest frame.
JP57064740A 1982-04-20 1982-04-20 Molding of head-rest frame Granted JPS58181617A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57064740A JPS58181617A (en) 1982-04-20 1982-04-20 Molding of head-rest frame

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57064740A JPS58181617A (en) 1982-04-20 1982-04-20 Molding of head-rest frame

Publications (2)

Publication Number Publication Date
JPS58181617A true JPS58181617A (en) 1983-10-24
JPS624209B2 JPS624209B2 (en) 1987-01-29

Family

ID=13266846

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57064740A Granted JPS58181617A (en) 1982-04-20 1982-04-20 Molding of head-rest frame

Country Status (1)

Country Link
JP (1) JPS58181617A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS625815A (en) * 1985-07-01 1987-01-12 Ishikawajima Harima Heavy Ind Co Ltd Thickness control device for parison
US5057178A (en) * 1990-05-09 1991-10-15 Eaton Corporation Method of making a coupling component by expanding and vulcanizing a tube directly onto friction shoe assemblies

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6336413U (en) * 1986-08-22 1988-03-09
JPH0355377Y2 (en) * 1986-08-22 1991-12-10

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS625815A (en) * 1985-07-01 1987-01-12 Ishikawajima Harima Heavy Ind Co Ltd Thickness control device for parison
US5057178A (en) * 1990-05-09 1991-10-15 Eaton Corporation Method of making a coupling component by expanding and vulcanizing a tube directly onto friction shoe assemblies

Also Published As

Publication number Publication date
JPS624209B2 (en) 1987-01-29

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