JPS5835450B2 - Headrest frame molding method and device - Google Patents
Headrest frame molding method and deviceInfo
- Publication number
- JPS5835450B2 JPS5835450B2 JP54038990A JP3899079A JPS5835450B2 JP S5835450 B2 JPS5835450 B2 JP S5835450B2 JP 54038990 A JP54038990 A JP 54038990A JP 3899079 A JP3899079 A JP 3899079A JP S5835450 B2 JPS5835450 B2 JP S5835450B2
- Authority
- JP
- Japan
- Prior art keywords
- stay
- mold
- parison
- molding
- split molds
- 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
Links
- 238000000465 moulding Methods 0.000 title claims description 16
- 238000000034 method Methods 0.000 title claims description 9
- 230000007246 mechanism Effects 0.000 claims description 21
- 239000011324 bead Substances 0.000 claims description 5
- 238000007664 blowing Methods 0.000 claims description 5
- 238000000071 blow moulding Methods 0.000 claims description 2
- 230000008859 change Effects 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000012815 thermoplastic material Substances 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 claims 2
- 239000000463 material Substances 0.000 description 9
- 239000007769 metal material Substances 0.000 description 7
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 238000003825 pressing Methods 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 241000219307 Atriplex rosea Species 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000001629 suppression 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/20—Blow-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
-
- 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
- B29L2031/58—Upholstery or cushions, e.g. vehicle upholstery or interior padding
Description
【発明の詳細な説明】
本発明は、車輛用座席に備えつけられるヘッドレストの
フレームを成形する方法及びその装置に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for molding a frame of a headrest installed in a vehicle seat.
従来のヘッドレストフレームは、一般的に金属材料をボ
ックス形状に形成した所謂弁当箱タイプと金属板から威
る所謂パネルタイプとが大半を占めていた。Most conventional headrest frames have been of the so-called lunch box type, which is generally made of metal material into a box shape, and the so-called panel type, which is made of metal plates.
これらは金属材料（通常は鉄板）が使用されるため軽量
化を図ることが困難であった。Since these use metal materials (usually iron plates), it has been difficult to reduce their weight.
また、弁当箱タイプのものは内部が中空であるため、パ
ネルタイプのものに比較して芯体にかぶせるクッション
材の使用量削減を図ることができるが、さらにクッショ
ン材の使用量削減を図ろうとすると形状を大きくしなけ
ればならず、この形状の肥大化はクッション材を削減し
た重量よりも肥大化に伴って使用する金属材料の重量の
方が重くなり、かつコストの面でも不利であった。In addition, since the bento box type is hollow inside, it is possible to reduce the amount of cushioning material used to cover the core compared to the panel type. This meant that the shape had to be enlarged, and the weight of the metal material used was greater than the weight of the reduced cushioning material, which was also disadvantageous in terms of cost. .
また、弁当箱タイプのものはヘッドレストの曲面形状（
特に国際規格では座者の後頭部が当る部分はＲ５の曲面
を有することを要求されている）に沿った形状に金属加
工を施すことが困難であり、かつそのための曲面加工の
コストが高くつくという欠点があった。In addition, the bento box type has a curved headrest (
In particular, it is difficult to process metal into a shape that follows the curved surface (R5 curved surface in the area where the back of the seater's head rests, according to international standards), and the cost of processing the curved surface is high. There were drawbacks.
そこで、ヘッドレスト全体のより軽量化を図るために、
インジェクション成形による合成樹脂製のヘッドレスト
フレームが開発された。Therefore, in order to reduce the weight of the entire headrest,
A synthetic resin headrest frame has been developed using injection molding.
合成樹脂製の中空体であるから、軽量化という面で金属
材料よりも効果はあるが、周知の如くインジェクション
成形では中空体を分割によって成形した後につぎ合わせ
て得るが、この合わせ部分の強度不足を補うために肉厚
を厚くしなけれはならず、そのため樹脂の使用量が増大
し、かつ金属材料との比較において著しく軽量化を図り
得るというものではなく、コストの面でも顕著な差異を
生ずるほどではなかった。Since it is a hollow body made of synthetic resin, it is more effective than metal materials in terms of weight reduction, but as is well known, in injection molding, the hollow body is molded in parts and then joined together, but this joint part lacks strength. In order to compensate for this, the wall thickness must be increased, which increases the amount of resin used, and it is not possible to achieve a significant weight reduction compared to metal materials, resulting in a significant difference in cost. It wasn't that much.
また、インジェクション成形の場合、ヘッドレストの曲
面形状に沿った中空芯体を成形するときに分割位置がき
わめて難しく、たとえうまく成形できた場合でもその後
の分割部の合わせが困難になるという欠点があった。In addition, in the case of injection molding, it is extremely difficult to determine the dividing positions when molding a hollow core that follows the curved shape of the headrest, and even if the molding is successful, it is difficult to align the divided parts afterwards. .
さらに、つぎ合わせ個所が熱や衝撃あるいはねじれ等に
よりはずれるおそれがあるとともに強度的に弱いという
欠点もあった。Furthermore, there is a risk that the spliced parts may come off due to heat, impact, twisting, etc., and the strength is weak.
このように近時におけるヘッドレストでは、より軽くか
つコスト的にもより安くという要請があり、しかも車輛
用座席に備えつけられるものである２・ら座者の安全性
確保の面でもより一層の向上が望まれているものである
。In recent years, there has been a demand for headrests to be lighter and cheaper in terms of cost, and further improvements have been made in terms of ensuring the safety of the occupants. It is desired.
本発明は、このような要望に応えるために発明されたも
のであり、ヘッドレストのフレームをより軽くするとと
もに、より大きくしてクッション材の使用量を削減し、
クッション材を大量に使用した従来のヘッドレストのよ
うに衝撃によって局部的あるいは片寄った変形を防彪し
てヘッドレストに一定以上の剛性を付与することにより
安全性を確保できるヘッドレストフレームの成形方法及
びその装置を提供せんとするものである。The present invention was invented in response to these demands, and aims to make the frame of the headrest lighter and larger, thereby reducing the amount of cushioning material used.
A method and device for forming a headrest frame that can ensure safety by providing rigidity above a certain level to the headrest by preventing local or one-sided deformation due to impact unlike conventional headrests that use a large amount of cushioning material. We aim to provide the following.
さらに他の本発明の目的は、金属材料から成るステイを
容易かつ強固にフレーム内にインサートして固着するこ
とができ、かつステイのインサートする角度を所定範囲
内で自由に変えられ、また自由に曲面形状を成形するこ
とのできるヘッドレストフレームの成形方法及びその装
置を提供することである。Still another object of the present invention is to be able to easily and firmly insert and fix a stay made of a metal material into a frame, and to be able to freely change the inserting angle of the stay within a predetermined range. It is an object of the present invention to provide a method and apparatus for molding a headrest frame that can mold a curved surface shape.
以下本発明の好適な実施例を図面に基づいて説明すると
、第１図は中空成形用割金型１，１を開いてこの型窩内
に金属材料から成るスデイ２の上端部をセットした状態
である。Preferred embodiments of the present invention will be described below based on the drawings. Fig. 1 shows a state in which the split molds 1, 1 for hollow molding are opened and the upper end of the mold 2 made of metal material is set in the cavity of the mold. It is.
このステイ２は約３０度内外の範囲内において傾斜角度
を自由に設定することができる。The inclination angle of this stay 2 can be freely set within a range of about 30 degrees or more.
ステイ２の傾斜角度については、第２図実線部分で示し
たステイ２の標準位置から後方へ傾斜させる場合にはス
テイ２の頭部が一方の割金型１の内壁に接触するまで（
約１７度位）、前方へ傾斜させる場合には約１０度位ま
では、後述するパリソンＰがステイ２の型窩内挿入部分
を被覆できることが実験の結果判明した。Regarding the inclination angle of the stay 2, when inclining the stay 2 backward from the standard position shown by the solid line in FIG.
As a result of experiments, it was found that the parison P, which will be described later, can cover the insertion portion of the stay 2 into the mold cavity up to about 10 degrees when tilting forward (approximately 17 degrees).
ただし、この実験結果はパリソンＰの肉厚が１．５關程
度で、ステイ２の太さが直径１０７ｒＬ１１ｔの丸棒を
縦方向（長さ方向）に切断した横断−面形状半円のもの
を使用した場合であるから、これらの条件が異なるとき
は傾斜可能な角度も異なるものである。However, this experimental result is based on a case where the parison P has a wall thickness of about 1.5 mm, and the stay 2 has a semicircular cross-sectional shape obtained by cutting a round bar with a diameter of 107rL11t in the longitudinal direction (length direction). When these conditions are different, the angle at which the device can be tilted will also be different.
所定の傾斜角度に設定されたステイ２は、その下端部が
支持され、この状態にセットした後に成形機（ダイ３の
み図示する）から可塑化された材料、すなわちあらかじ
め所望の肉厚、直径を持ったパイプ状のパリソンＰを適
当な長さまん割金型１゜１の間に押出す。The stay 2, which is set at a predetermined inclination angle, has its lower end supported, and after being set in this state, a plasticized material from a molding machine (only the die 3 is shown), that is, a desired wall thickness and diameter, is inserted into the stay 2. The pipe-shaped parison P held is extruded between 1°1 molds split into appropriate lengths.
このパリソンＰを押出す成形機としては、通常のラム式
、スクリュ一式あるいはこれらの併用式等が使用され、
熱可塑性材料としては、ポリエチレン、ポリプロピレン
、ＡＢＳ樹脂等の適宜材料が使用される。As a molding machine for extruding this parison P, a normal ram type, a screw set, or a combination of these types is used.
As the thermoplastic material, appropriate materials such as polyethylene, polypropylene, ABS resin, etc. are used.
押出されてきたパリソンＰの外周面の一部をステイ２の
上端部（型窩内挿入部分）の側面に接触させるとともに
、図示しない型締機構により割金型１，１を型締めして
パリソンＰをはさむ。A part of the outer peripheral surface of the extruded parison P is brought into contact with the side surface of the upper end of the stay 2 (portion inserted into the mold cavity), and the split molds 1 and 1 are clamped by a mold clamping mechanism (not shown) to form the parison. Insert P.
この型締め終了と同時にパリソンＰ内に前記ダイ３の中
心に設けられた吹込口４から圧縮空気を吹込む。At the same time as this mold clamping is completed, compressed air is blown into the parison P from the blowing port 4 provided at the center of the die 3.
圧縮空気を吹込むことによりパリソンＰを型窩内面に密
着させ、かつ型窩内に位置するステイ２の周囲にまわり
込ませる。By blowing compressed air, the parison P is brought into close contact with the inner surface of the mold cavity and wrapped around the stay 2 located in the mold cavity.
次いで前記割金型１，１に設けた冷却水溝５に冷却水を
流すことによりふくらんだパリソンＰを冷却して硬化さ
せる。Next, by flowing cooling water into the cooling water grooves 5 provided in the split molds 1, 1, the swollen parison P is cooled and hardened.
このパリソンＰの硬化に伴ってステイ２の周囲が覆われ
て樹脂材料中にインサートされ強固に固着される。As the parison P hardens, the periphery of the stay 2 is covered, inserted into the resin material, and firmly fixed.
硬化後は割金型１，１を開いて成形品を取出してパリ取
りをする。After curing, the split molds 1 and 1 are opened, the molded product is taken out, and deburred.
なお、前記ステイ２のセットに際して、ステイ２を加熱
した上でセットすることが望ましい。In addition, when setting the stay 2, it is desirable to set the stay 2 after heating it.
ステイ２を加熱しておけは圧縮空気の吹込み時における
パリソンＰによるステイ２の被覆が円滑になされるとと
もに均等な肉厚で被覆でき、結果としてステイ２が樹脂
材料に強固に固着保持される。By heating the stay 2, the stay 2 can be covered smoothly with the parison P when compressed air is blown into the stay 2, and the stay 2 can be coated with an even thickness, and as a result, the stay 2 is firmly fixed to the resin material. .
このようにしてステイ２の上端部を固定保持した第３図
に示す如きヘッドレストフレーム１００が成形される。In this way, a headrest frame 100 as shown in FIG. 3 in which the upper end portion of the stay 2 is fixedly held is formed.
次に本発明装置について詳述すると、通常の吹込成形機
に共通する機構の他にステイ２の下端部を支持する支持
機構１０が設けられるとともに、ステイ２の傾斜角度を
調節する角度調節機構２０が設けられている。Next, the apparatus of the present invention will be described in detail. In addition to the mechanisms common to ordinary blow molding machines, a support mechanism 10 that supports the lower end of the stay 2 is provided, and an angle adjustment mechanism 20 that adjusts the inclination angle of the stay 2. is provided.
支持機構１０は、第４図に示すようにステイ２の下端部
を支持し得る位置に適宜手段により配設され、その構造
は第５図、第６図に示すように縦方向及び横方向に移動
可能に構成されている。The support mechanism 10 is disposed by appropriate means at a position where it can support the lower end of the stay 2, as shown in FIG. 4, and its structure is arranged vertically and horizontally as shown in FIGS. It is configured to be movable.
すなわち、フレーム１１に対し支持部１２がスライド可
能に取付けられ、この支持部１２に対し前記のスライド
方向に直交する方向でスライド可能に移動駒１３が取付
けられている。That is, a support portion 12 is slidably attached to the frame 11, and a movable piece 13 is attached to the support portion 12 so as to be slidable in a direction perpendicular to the aforementioned sliding direction.
ステイ２は移動駒１３に形成された溝１４内に挿入され
て支持され、ステイ２の割金型１，１が形成する型窩内
への挿入量はこの移動駒１３の第５図矢印方向へのスラ
イドにより調節される。The stay 2 is inserted and supported in the groove 14 formed in the movable piece 13, and the amount of insertion of the stay 2 into the mold cavity formed by the split molds 1, 1 is determined by the direction of the arrow in FIG. 5 of the movable piece 13. Adjusted by sliding to .
前記支持部１２には上下ピストン１５が取付けられ、後
述する角度調節機構２０の先端部によるステイ２への押
圧により収縮され、この押圧力の解除により伸長するよ
うになっており、この結果支持部１２が第６図矢印方向
にスライドしてステイ２の傾斜角度を調節する。A vertical piston 15 is attached to the support part 12, and is contracted by pressing the stay 2 with the tip of an angle adjustment mechanism 20, which will be described later, and expands when this pressing force is released.As a result, the support part 12 slides in the direction of the arrow in FIG. 6 to adjust the inclination angle of the stay 2.
第６図の矢印方向は割金型１．１の移動方向と同一であ
る。The direction of the arrow in FIG. 6 is the same as the direction of movement of the split mold 1.1.
前記角度調節機構２０は、一方の割金型１にその基端部
が固定され、先端部が割金型１の移動に伴ってステイ２
の側面を押圧して前記支持部１２をスライドさせるよう
に構成されている。The angle adjustment mechanism 20 has its base end fixed to one of the split molds 1, and its distal end fixed to the stay 2 as the split mold 1 moves.
The support part 12 is slid by pressing the side surface of the support part 12.
すなわち、第７図に示すようにチューブ状のアングル部
材２１の一端を割金型１に固着し、他端に引出部材２２
を挿入し、この引出部材２２の先端に抑圧板２３を枢着
したものであり、引出部材２２の引出長は調節ネジ２４
の締結により所望の長さに調節できる。That is, as shown in FIG. 7, one end of the tube-shaped angle member 21 is fixed to the split mold 1, and the drawer member 22 is attached to the other end.
is inserted, and a suppression plate 23 is pivotally attached to the tip of this pull-out member 22, and the pull-out length of the pull-out member 22 is determined by adjusting the adjustment screw 24.
The desired length can be adjusted by tightening.
換言すれば、角度調節機構２０の先端部は、引出部材２
２の挿入されたアングル部材２１の一部から押圧板２３
までを指し、この間の長さが調節可能に構成されている
ものである。In other words, the tip of the angle adjustment mechanism 20 is
Pressing plate 23 from a part of inserted angle member 21
The length between these lengths is adjustable.
前記引出部材２２には、例えは色別の目盛等を刻印して
おくことにより、赤色の目盛のところまで引出部材２２
を引き出したときには所定の車種の場合におけるステイ
２の傾斜角度が設定され、青色のときは他の車種という
具合にステイ２の傾斜角度の調節を容易にすることがで
きる。For example, by marking the drawer member 22 with color-coded scales, etc., the drawer member 22 can be moved up to the red scale.
When pulled out, the inclination angle of the stay 2 for a predetermined car type is set, and when it is blue, the inclination angle of the stay 2 can be easily adjusted for other car types.
なお、割金型１，１が形成する型窩内の形状は、ヘッド
レスト本体の外形形状と略同−形状に設計されることは
勿論であるが、フレーム１００に大きな窪み１０１を形
成するために割金型１，１内に突条６，６を設けても良
い。Note that the shape of the mold cavity formed by the split molds 1, 1 is of course designed to be approximately the same as the external shape of the headrest body, but in order to form a large recess 101 in the frame 100, Projections 6, 6 may be provided within the split molds 1, 1.
また、完成されたフレーム１００にビード１０２を形成
したり、貫通孔１０３を形成することも割金型１，１の
設計如イ司により自由にできる。Furthermore, it is possible to freely form beads 102 and through holes 103 in the completed frame 100 depending on the design of the split molds 1,1.
このように、窪み１０１やビード１０２あるいは貫通孔
１０３をフレーム１００に形成するのは、フレーム１０
０の強度の増大となり、しかもフレーム１００の外面に
ウレタン発泡体等を被覆する場合に発泡体が凹所や孔に
入り込んでフレーム１００と発泡体とが強固に接着され
る利点を有するからである。In this way, the recess 101, bead 102, or through hole 103 is formed in the frame 100.
This is because when the outer surface of the frame 100 is coated with urethane foam or the like, the foam gets into the recesses and holes, and the frame 100 and the foam are firmly bonded. .
以上説明したように、本発明に係る方法及び装置により
成形されるヘッドレストフレームは、つぎ目のない中空
体に形成されているので、つぎ目の強度を増すために肉
厚を厚くする必要がないのでより軽量化が図られ、しか
も圧縮空気の吹込みを利用してステイ上端部を樹脂材料
により強固に固定保持し得る。As explained above, the headrest frame formed by the method and apparatus according to the present invention is formed into a seamless hollow body, so there is no need to increase the wall thickness to increase the strength of the seams. Therefore, the weight can be further reduced, and the upper end of the stay can be firmly fixed and held by the resin material by using compressed air blowing.
また、本発明の方法及び装置のいずれの場合でも、中空
一体成形であるためヘッドレスト本体の外形形状にあっ
たフレームを容易かつ簡単に成形することができ、かつ
所望の大きさに成形することができるとともに、強度的
にも十分なフレームを成形することができる。In addition, in any case of the method and device of the present invention, since the hollow integral molding is used, it is possible to easily and easily mold a frame that matches the external shape of the headrest body, and it is also possible to mold the frame to a desired size. At the same time, it is possible to mold a frame with sufficient strength.
特にステイの傾斜角度が所定の範囲内で自由に設定する
ことができるので、同−成形型のものでステイ角度の異
なる製品を成形することが可能であり、例えは自動車の
種類によってはフレームの大きさは同じでもステイ角度
が異なる場合等にはきわめて便利である。In particular, since the inclination angle of the stay can be freely set within a predetermined range, it is possible to mold products with different stay angles using the same mold. For example, depending on the type of automobile, the frame This is extremely convenient when the stay angle is different even though the size is the same.
また、型開きの際、一対の割金型の合せ部からステイの
上端部を挿入して所望の傾斜角度で支持し、その後、パ
リソンを押出し、型締め後、パリソンに圧縮空気を吹込
んでステイの周囲に樹脂をまわり込ませてステイを固定
保持するものであるので、ステイの挿入方向の精度はさ
ほど要求されず、型はらしも容易なものとなる。In addition, when opening the mold, the upper end of the stay is inserted through the mating part of a pair of split molds and supported at the desired angle of inclination.Then, the parison is pushed out, and after the mold is closed, compressed air is blown into the parison and the stay is Since the stay is fixed and held by wrapping resin around the stay, accuracy in the insertion direction of the stay is not required so much, and molding is easy.
また、ヘッドレストフレームに窪みビードあるいは貫通
孔を成形するようにしたので、複数のパリソン間に芯体
を挟持一体化させて剛性をもたせる必要性が皆無である
。Furthermore, since the headrest frame is formed with a recessed bead or a through hole, there is no need to sandwich and integrate the core body between a plurality of parisons to provide rigidity.
第１図はパリソンを押出した状態の縦断面図、第２図は
ステイのセット時における部分的拡大図、第３図は完成
品の斜視図、第４図はステイ支持機構と角度調節機構と
の配置を示す簡略図、第５図はステイ支持機構正面略図
、第６図は第５図の平面略図、第７図は角度調節機構の
詳細図である。
１・・・割金型、２・・・ステイ、３・・・グイ、４・
・・吹込口、５・・・冷却水溝、１０・・・ステイ支持
機構、１２・・・支持部、２０・・・角度調節機構。Fig. 1 is a longitudinal cross-sectional view of the parison with the parison pushed out, Fig. 2 is a partially enlarged view of the stay when it is set, Fig. 3 is a perspective view of the completed product, and Fig. 4 shows the stay support mechanism and angle adjustment mechanism. 5 is a schematic front view of the stay support mechanism, FIG. 6 is a schematic plan view of FIG. 5, and FIG. 7 is a detailed view of the angle adjustment mechanism. 1...Split mold, 2...Stay, 3...Gui, 4.
...Inlet, 5...Cooling water groove, 10...Stay support mechanism, 12...Support part, 20...Angle adjustment mechanism.
Claims (1)
レームとほぼ同一形状を有する金型の型窩内に押出して
ヘッドレストフレームを成形するヘッドレストフレーム
の成形方法において、ヘッドレストフレームの窪みやビ
ード、あるいは貫通孔に対応する凹凸形状を形成した金
型の型窩内にステイの上端部を角度調整機構および支持
機構を介して挿入し、所望の傾斜角度でスティを支持し
た後、成形機の押出口から筒状パリソンを割金型の間に
押出し、押出されてきたパリソンの外周面の一部をステ
イの上端部の側面に近接あるいは接触させるとともに、
割金型を型締めしてパリソンをはさみ、この型締め終了
と同時にパリソン内に吹込口から圧縮空気を吹込むこと
により、パリソンを型窩内面に密着させ、かつ型窩内に
位置するステイの周囲にまわりこませ、その後冷却硬化
により、中空成形品にステイを固定保持するとともに、
窪みやビードあるいは貫通孔を成形したことを特徴とす
るヘッドレストフレームの成形方法。 ２ 二分割された割金型と、これら割金型を締めつける
型締機構と、割金型間に押出されてはさまれるパリソン
を押出す成形機も、割金型ではさまれたパリソン内に圧
縮空気を吹込む吹込口とを有する吹込成形機であって、
型窩内にスティの上端部が位置するようにステイ下端部
を支持する支持機構を設け、この支持機構のスティ支持
部を割金型と同方向にスライド可能に構成し、前記割金
型の一方に先端部がスティ側面を押圧して前記支持機構
に支持されたスティの傾斜角度を変化させるとともにこ
の先端部が長さ調節可能に構成された角度調節機構を取
付けたことを特徴とするヘッドレストフレームの成形装
置。[Scope of Claims] 1. A headrest frame molding method in which a headrest frame is molded by extruding a thermoplastic material from an extrusion port of a molding machine into a mold cavity of a mold having approximately the same shape as the headrest frame. The upper end of the stay is inserted through the angle adjustment mechanism and support mechanism into the mold cavity of the mold, which has an uneven shape corresponding to the bead or through hole. After supporting the stay at the desired inclination angle, the molding begins. A cylindrical parison is extruded from the extrusion port of the machine between split molds, and a part of the outer peripheral surface of the extruded parison is brought close to or in contact with the side surface of the upper end of the stay,
By clamping the split mold and sandwiching the parison, and blowing compressed air into the parison from the air outlet at the same time as the mold clamping is completed, the parison is brought into close contact with the inner surface of the mold cavity, and the stay located in the mold cavity is The stay is wrapped around the surrounding area and then cooled and hardened to fix and hold the stay on the hollow molded product.
A method for molding a headrest frame characterized by molding depressions, beads, or through holes. 2 The split molds that are divided into two parts, the mold clamping mechanism that tightens these split molds, and the molding machine that extrudes the parison that is extruded and sandwiched between the split molds are also installed inside the parison that is sandwiched between the split molds. A blow molding machine having an inlet for blowing compressed air,
A support mechanism is provided to support the lower end of the stay so that the upper end of the stay is located in the mold cavity, and the stay support portion of this support mechanism is configured to be slidable in the same direction as the split mold. A headrest characterized in that an angle adjustment mechanism is attached to one end of the stay that presses against a side surface of the stay to change the inclination angle of the stay supported by the support mechanism, and that allows the length of the front end to be adjusted. Frame forming equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54038990A JPS5835450B2 (en) | 1979-03-31 | 1979-03-31 | Headrest frame molding method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54038990A JPS5835450B2 (en) | 1979-03-31 | 1979-03-31 | Headrest frame molding method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55130744A JPS55130744A (en) | 1980-10-09 |
| JPS5835450B2 true JPS5835450B2 (en) | 1983-08-02 |
Family
ID=12540569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54038990A Expired JPS5835450B2 (en) | 1979-03-31 | 1979-03-31 | Headrest frame molding method and device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5835450B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62183253U (en) * | 1986-05-12 | 1987-11-20 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH047940Y2 (en) * | 1985-02-27 | 1992-02-28 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5034052A (en) * | 1973-07-27 | 1975-04-02 | ||
| JPS52152459A (en) * | 1976-06-14 | 1977-12-17 | Inoue Gomu Kogyo Kk | Method of molding plastic hollow article |
-
1979
- 1979-03-31 JP JP54038990A patent/JPS5835450B2/en not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5034052A (en) * | 1973-07-27 | 1975-04-02 | ||
| JPS52152459A (en) * | 1976-06-14 | 1977-12-17 | Inoue Gomu Kogyo Kk | Method of molding plastic hollow article |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62183253U (en) * | 1986-05-12 | 1987-11-20 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55130744A (en) | 1980-10-09 |
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