JPS59140032A - Regulator for thickness of parison in blow molding machine - Google Patents
Regulator for thickness of parison in blow molding machineInfo
- Publication number
- JPS59140032A JPS59140032A JP58015334A JP1533483A JPS59140032A JP S59140032 A JPS59140032 A JP S59140032A JP 58015334 A JP58015334 A JP 58015334A JP 1533483 A JP1533483 A JP 1533483A JP S59140032 A JPS59140032 A JP S59140032A
- Authority
- JP
- Japan
- Prior art keywords
- parison
- pin
- slit
- die
- thickness
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
- B29C48/325—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles being adjustable, i.e. having adjustable exit sections
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion 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
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/302—Extrusion nozzles or dies being adjustable, i.e. having adjustable exit sections
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】 肉厚調整装置に関する。[Detailed description of the invention] This invention relates to a wall thickness adjustment device.
ブロー成形品の肉厚を均一にするために、パリソンの軸
方向肉厚制御装置が従来より使用されている。成形品の
肉厚を理想的なものとするためには、パリソンの周方向
において局部的に肉厚制御を行う必要があるが、」二記
従来装置においては、成形品の一部分に対する肉厚制御
を行うことはできなかった。In order to make the wall thickness of a blow molded product uniform, a parison axial wall thickness control device has conventionally been used. In order to make the wall thickness of a molded product ideal, it is necessary to locally control the wall thickness in the circumferential direction of the parison. could not be done.
本発明□は斯かる実情に鑑み、パリソンの周方向におい
て部分的に肉厚を制御し得る肉厚調整−ｊＡ置を提供す
べく成したものである。The present invention □ has been made in view of the above-mentioned circumstances to provide a wall thickness adjustment -jA position that can partially control the wall thickness in the circumferential direction of the parison.
以１ζ、本発明の実施例を図面を参明して説明する。Hereinafter, embodiments of the present invention will be described with reference to the drawings.
第１図はブロー成形機におけるパリソンヘッドをホすも
ので、１はヘッド本体、２はヘッド本体の下端に設けた
ダイ、３はタイ２の中央に配設してタイ２との間でパリ
ソン４を射出するスリット５を形成するためのコア、６
はコア３を昇降させてスリット５の厚みをａｌ整するた
めのロット、７はパリソン４を射出するためのピストン
、８は射出シリンダである。Figure 1 shows a parison head in a blow molding machine, where 1 is the head body, 2 is a die provided at the lower end of the head body, and 3 is a die provided at the center of the tie 2, and the parison head is placed between the tie 2 and the parison head. A core for forming a slit 5 for injecting 4, 6
numeral 7 is a rod for elevating and lowering the core 3 to adjust the thickness of the slit 5; 7 is a piston for injecting the parison 4; and 8 is an injection cylinder.
斯かるパリソンヘッドにおし）で、′第２図及び第３図
にも示すように、タイ２の下端スリット５面部に、円弧
状の凹溝９を周方向部分的に設け、該凹溝９内に、スリ
ット５間隔を調整するための調整セグメント１０．１１
を配設する。In such a parison head, as shown in FIGS. 2 and 3, an arcuate groove 9 is partially provided in the circumferential direction on the lower end slit 5 surface of the tie 2. 9, an adjustment segment 10.11 for adjusting the slit 5 spacing
Place.
セグメント１０．１１の詳細は第４図に示す如くである
。即ち１セグメント１ｏと１１とは略対称な円弧形状を
しており、夫々外端部１０ａ 、 ｉｉａは曲面状に形
成されて前記凹１Ｍ ９の両端に摺動可能に嵌合してい
ると共に、夫々内端部にはブラケット部１ｏｂ、１ｉｂ
が曲設されて段付ピン１２の小ｆギ部にて入子式に枢着
連結され、スリット５側からのパリソン４の射出圧ノＪ
によりピン１２を中心に外方へ向けて膨らみ得るよう４
１６成しである。更にピン１２の大（Ｌ部外面側には、
セグメント１０．１１をスリット５側へ押圧するための
ブツシュ装置１３のロット１４かダイ２を貫通してピン
１５を介しスライド０工能に接続しである。Details of segments 10 and 11 are shown in FIG. That is, one segment 1o and 11 has a substantially symmetrical arc shape, and the outer end portions 10a and 11a, respectively, are formed into a curved shape and are slidably fitted into both ends of the recess 1M9, Bracket parts 1ob and 1ib are provided at the inner ends, respectively.
is bent and pivotally connected in a telescopic manner at the small f gear part of the stepped pin 12, and the injection pressure J of the parison 4 from the slit 5 side is
4 so that it can bulge outward centering on the pin 12.
He is 16 years old. Furthermore, the size of the pin 12 (on the outer surface of the L part is
The rod 14 of the bushing device 13 for pressing the segment 10.11 toward the slit 5 passes through the die 2 and is connected to the slide 0 function via a pin 15.
尚、セグメント１０．１１の外端部１０ａ 、 ｌｌａ
が位置するダイ２の下端面には、セグメント１０゜１１
膨張時に形成される外端部１０ａ、１１ａと凹溝９の両
端部との間の隙間を表面的に塞ぐための塞ぎ板１６．１
６が設けである。In addition, the outer ends 10a and lla of the segments 10.11
On the lower end surface of the die 2 where the segment 10°11
Closing plate 16.1 for superficially closing the gap between the outer ends 10a, 11a and both ends of the groove 9 formed during expansion.
6 is a provision.
今、スリット５より射出されるパリソン４のｊンみを部
分的に厚くしようとする場合には、ブツシュ装置１３の
ロッド１４を所要量収縮することにより行う。即ち、ロ
ッド１４を収縮すると、ロッド１４とピン１２とがピン
１５によりスライド０工能に接続しであるので、ロッド
１４だけが第２図において右方へ移動することになる。Now, if it is desired to partially thicken the thickness of the parison 4 ejected from the slit 5, this is done by contracting the rod 14 of the bushing device 13 by the required amount. That is, when the rod 14 is retracted, only the rod 14 moves to the right in FIG. 2 because the rod 14 and the pin 12 are connected to the slide 0 position by the pin 15.
この状態でスリット５よりパリソン４か射出されると、
その圧力によりセグメント１０．１１が仮想線の位置ｌ
＼と膨らむよう移動し、ピン１２かロッド１４に当接し
たところで停止する。これによって、セグメント１０．
１１の部分はスリット５間隔か大きくなり、従って射出
されるパリソン４の肉厚を厚くすることができる。尚こ
の際、セグメント１０゜１１か外力へ膨らむ如く移動す
ると、その外端部１０ａ 、 ｌｌａとタイ２における
凹溝９の両端部との間に若干隙間が形成され、その状態
でツマ１ノソン４か押出されると、パリソン４のタト壁
に軸方向の突起が形成されてしまうので、本発明におい
では、この隙間を表面的に塞ぐようダイ２の１・而に塞
ぎ板１６．１６が設けてあり、この塞ぎ板１６．１６に
て形成される突起を掻き取るようにしで、パ゛リソン４
の外壁を滑らかに仕上げている。When parison 4 is injected from slit 5 in this state,
Due to the pressure, segment 10.11 moves to the position of the imaginary line l
It moves so that it bulges out and stops when it comes into contact with the pin 12 or rod 14. This results in segment 10.
In the portion 11, the distance between the slits 5 is increased, so that the thickness of the parison 4 to be injected can be increased. At this time, when the segments 10° 11 move as if bulging due to external force, a slight gap is formed between the outer ends 10a, 11a and both ends of the groove 9 in the tie 2, and in this state, the knob 1 and 4 When the parison 4 is extruded, an axial protrusion is formed on the vertical wall of the parison 4. Therefore, in the present invention, a closing plate 16, 16 is provided at the die 2 so as to superficially close this gap. By scraping off the protrusions formed by this closing plate 16 and 16, the parison 4
The exterior walls of the building are finished smoothly.
一方、上記の状態から、パリソン４の厚みを周方向均一
にする場合には、単にブツシュ装置１３のロッド１４を
所定位置まで伸長させればよく、これによってセグメン
ト１０．１１は第２図においで実線の位置へ復帰し、ス
リット５の間隅が周方向均一となる。この際、セグメン
ト１０．１１の外端部１０ａ 、 ｌｌａと凹溝９の両
端部との間の隙間内に入り込んでいたパリソン４は自動
的にこの隙間から押出される。On the other hand, in order to make the thickness of the parison 4 uniform in the circumferential direction from the above-mentioned state, it is sufficient to simply extend the rod 14 of the bushing device 13 to a predetermined position, and thereby the segments 10.11 become as shown in FIG. It returns to the position indicated by the solid line, and the corners between the slits 5 become uniform in the circumferential direction. At this time, the parison 4 that has entered the gap between the outer ends 10a, lla of the segments 10.11 and both ends of the groove 9 is automatically pushed out from this gap.
尚、１１１Ｊ記実施例においては、セグメント１０゜１
１をタイ２の周方向に１ケ所しか殺°けていなし）が、
その数は任意に選定し得ること、ピン１２とロッド１４
とは固着してもよいこと、ブツシュ装置１３はあらゆる
装置を使用し得ること、その龍本発明の要旨を逸脱しな
い限り種々変更を加え（９ることは勿論である。In addition, in the embodiment described in 111J, the segment 10°1
1 was killed in only one place in the circumferential direction of tie 2), but
The number of pins 12 and rods 14 can be selected arbitrarily;
It goes without saying that the bushing device 13 may be fixed in place, that any device can be used as the bushing device 13, and that various modifications may be made without departing from the gist of the present invention.
如上のように本発明によれば、ダイの下端に設けた調整
セグメントにより、パリソンの肉厚を周方向においてｇ
ｌｆｌ約分調整することができるので、成形品の肉厚を
理想的なものとすることができる、と言う優れた効果を
奏し得る。As described above, according to the present invention, the wall thickness of the parison can be adjusted in g in the circumferential direction by the adjustment segment provided at the lower end of the die.
Since the lfl can be adjusted, the excellent effect of making the wall thickness of the molded product ideal can be achieved.
第１図は本発明の肉厚調整＆置を備えたパリソンヘッド
の概略切断側面図、第２図は第１図のＩ１１方向拡大矢
視図、第３図は第１図のｌｉｔ、田方向拡犬矢視図、第
４図は調整セグメントの説明図である。
２・・・タイ、３・・・コア、５・・・スリット、９・
・・凹溝、１０．１１・・・セグメント、１０ａ 、
ｌｌａ・・・外端部、１２・・・ピン、１３・・・ブツ
シュ装置。
！Ｉ８
特Fig. 1 is a schematic cut-away side view of a parison head equipped with wall thickness adjustment and placement according to the present invention, Fig. 2 is an enlarged view taken in the I11 direction of Fig. 1, and Fig. 3 is a lit/field direction of Fig. 1. 4 is an explanatory diagram of the adjustment segment. 2...Tie, 3...Core, 5...Slit, 9...
... Concave groove, 10.11... Segment, 10a,
lla...Outer end portion, 12...Pin, 13...Bushing device. ! I8 special
Claims (1)
と、該コアの外周に設けたダイとの間に形成したスリッ
トからパリソンを射出形成するようにしたブロー成形機
において、ｍＩ記ダイの下端スリット面部に円弧状の凹
溝を設けると共に、該凹膚内に、ビンにて回動可能に一
対の円弧状肉厚調整セグメントを配設し、且つ前記ピン
に、タイの外方よりタイを貫通してブツシュ装置のロッ
ドを接続したことを特徴とするブロー成形機におけるパ
リソンの肉厚調整装置。l) In a blow molding machine that injects a parison from a slit formed between a core disposed at the center of the lower end of the parison head body and a die provided on the outer periphery of the core, the lower end of the die marked mI is used. An arcuate groove is provided in the slit surface, and a pair of arcuate wall thickness adjustment segments are provided in the recess so as to be rotatable with a pin, and a tie is attached to the pin from the outside of the tie. A device for adjusting wall thickness of a parison in a blow molding machine, characterized in that a rod of a bushing device is connected through the device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58015334A JPS59140032A (en) | 1983-02-01 | 1983-02-01 | Regulator for thickness of parison in blow molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58015334A JPS59140032A (en) | 1983-02-01 | 1983-02-01 | Regulator for thickness of parison in blow molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59140032A true JPS59140032A (en) | 1984-08-11 |
Family
ID=11885880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58015334A Pending JPS59140032A (en) | 1983-02-01 | 1983-02-01 | Regulator for thickness of parison in blow molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59140032A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6331907U (en) * | 1986-08-15 | 1988-03-01 | ||
| JPS6392416A (en) * | 1986-10-07 | 1988-04-22 | Ishikawajima Harima Heavy Ind Co Ltd | Wall thickness controller of parison in blow molding machine |
| JP2017222181A (en) * | 2017-09-27 | 2017-12-21 | トヨタ自動車株式会社 | Method for producing resin molded article |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52115870A (en) * | 1976-03-13 | 1977-09-28 | Elbatainer Kunststoff | Method and device for producing hollow article from thermoplastic synthetic resin |
| JPS5764524A (en) * | 1980-10-07 | 1982-04-19 | Ishikawajima Harima Heavy Ind Co Ltd | Device for controlling thickness of parison |
-
1983
- 1983-02-01 JP JP58015334A patent/JPS59140032A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52115870A (en) * | 1976-03-13 | 1977-09-28 | Elbatainer Kunststoff | Method and device for producing hollow article from thermoplastic synthetic resin |
| JPS5764524A (en) * | 1980-10-07 | 1982-04-19 | Ishikawajima Harima Heavy Ind Co Ltd | Device for controlling thickness of parison |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6331907U (en) * | 1986-08-15 | 1988-03-01 | ||
| JPH0420011Y2 (en) * | 1986-08-15 | 1992-05-07 | ||
| JPS6392416A (en) * | 1986-10-07 | 1988-04-22 | Ishikawajima Harima Heavy Ind Co Ltd | Wall thickness controller of parison in blow molding machine |
| JPH044124B2 (en) * | 1986-10-07 | 1992-01-27 | ||
| JP2017222181A (en) * | 2017-09-27 | 2017-12-21 | トヨタ自動車株式会社 | Method for producing resin molded article |
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