JPH07246651A - Parison control method and device of hollow molding machine - Google Patents
Parison control method and device of hollow molding machineInfo
- Publication number
- JPH07246651A JPH07246651A JP6040063A JP4006394A JPH07246651A JP H07246651 A JPH07246651 A JP H07246651A JP 6040063 A JP6040063 A JP 6040063A JP 4006394 A JP4006394 A JP 4006394A JP H07246651 A JPH07246651 A JP H07246651A
- Authority
- JP
- Japan
- Prior art keywords
- parison
- molding machine
- core
- die
- screw portion
- 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
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
- 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
- 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
- B29C49/04116—Extrusion blow-moulding characterised by the die
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
【０００１】[0001]
【産業上の利用分野】本発明は、中空成形機のパリソン
制御方法及び装置に関し、特に、電動モータ等を介して
ダイを上下動させることによりパリソンの肉厚を制御す
るための新規な改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for controlling a parison of a blow molding machine, and more particularly to a new improvement for controlling the thickness of a parison by moving a die up and down via an electric motor or the like. .
【０００２】[0002]
【従来の技術】従来、用いられていたこの種の中空成形
機のパリソン制御方法及び装置としては、例えば、図３
及び図４に示す特開平５−９２４８１号公報に開示され
た構成を挙げることができる。すなわち、図３において
符号１で示されるものは押出機２からの溶融樹脂４が供
給されるクロスヘッドであり、このクロスヘッド１の下
部に設けられたダイ３には、この溶融樹脂４の吐出を行
うための輪状の吐出口５が形成されている。2. Description of the Related Art As a conventional parison control method and device for a blow molding machine of this type, for example, FIG.
And the configuration disclosed in Japanese Patent Laid-Open No. 5-92481 shown in FIG. That is, the reference numeral 1 in FIG. 3 is a crosshead to which the molten resin 4 is supplied from the extruder 2, and the molten resin 4 is discharged to the die 3 provided under the crosshead 1. A ring-shaped discharge port 5 for performing the above is formed.
【０００３】前記吐出口５は、このダイ３の中心に作動
自在に設けられたコア６によって輪状に形成され、この
コア６は、図３に示すように、テーパ部６ａ及び直線部
６ｂを一体に有すると共に、このコア６を矢印Ａの方向
に移動することにより、テーパ部６ａの外面６ａＡと吐
出口５の内壁５ａ間の間隔を自在に変え、押出されるパ
リソン１２の肉厚を変えることができる。なお、前述の
構成は従来例と同一である。The discharge port 5 is formed in a ring shape by a core 6 operably provided at the center of the die 3, and the core 6 has a tapered portion 6a and a linear portion 6b integrally formed as shown in FIG. In addition, by moving the core 6 in the direction of arrow A, the interval between the outer surface 6aA of the tapered portion 6a and the inner wall 5a of the discharge port 5 can be freely changed, and the wall thickness of the extruded parison 12 can be changed. You can The above-mentioned configuration is the same as the conventional example.
【０００４】前記コア６は、前記クロスヘッド１の頂部
１ａを貫通して矢印Ａで示す上下動のみ自在に設けられ
たロッド７に接続されており、このロッド７の上部には
メスねじ部７ａが形成されている。The core 6 is connected to a rod 7 penetrating the top portion 1a of the crosshead 1 so as to be movable only up and down as indicated by an arrow A, and an upper portion of the rod 7 has a female screw portion 7a. Are formed.
【０００５】前記メスねじ部７ａには、樹脂からの圧力
を逃げるために設けられた周知のスラストベアリング２
０を介して減速機２１に接続された回転ロッド２０Ａの
オスねじ部２０Ａａが出入自在に螺入しており、この減
速機２１にはモータ２２の回転軸２２ａが接続されてい
る。このモータ２２は、ロータリーエンコーダ等の回転
検出器２２ｂを有するＡＣサーボモータ等の可変速形の
構成からなっており、プログラムを記憶したメモリ（図
示せず）を有する制御部１１が接続されている。A well-known thrust bearing 2 is provided on the female screw portion 7a to escape the pressure from the resin.
The male screw portion 20Aa of the rotary rod 20A connected to the speed reducer 21 through 0 is screwed in and out freely, and the speed reducer 21 is connected to the rotary shaft 22a of the motor 22. The motor 22 has a variable-speed configuration such as an AC servomotor having a rotation detector 22b such as a rotary encoder, and is connected to a control unit 11 having a memory (not shown) storing a program. .
【０００６】次に、前述の構成において、本発明による
中空成形機のパリソンコントローラを作動させる場合に
ついて述べる。まず、あらかじめ設定されたプログラム
を内蔵した制御部１１によってモータ２２を回転させる
と、このモータ２２の回転が、減速機２１、スラストベ
アリング２０、及び回転ロッド２０Ａを介してオスねじ
部２０Ａａを回転すると、メスねじ部７ａを介してロッ
ド７のみが矢印Ａ方向に移動し、ロッド７の軸方向の位
置が決められるため、コア６の矢印Ａ方向の移動による
吐出口５の輪状の間隔を任意に変えることができる。Next, a case where the parison controller of the blow molding machine according to the present invention is operated in the above-mentioned configuration will be described. First, when the motor 22 is rotated by the control unit 11 containing a preset program, the rotation of the motor 22 causes the male screw portion 20Aa to rotate via the speed reducer 21, the thrust bearing 20, and the rotating rod 20A. Since only the rod 7 moves in the arrow A direction via the female screw portion 7a and the axial position of the rod 7 is determined, the ring-shaped interval of the discharge port 5 due to the movement of the core 6 in the arrow A direction can be arbitrarily set. Can be changed.
【０００７】従って、この制御部１１のプログラムを任
意に設定しておくことにより、必要とする吐出口５の前
記間隔を変え、パリソン１２の肉厚を連続的に変えるこ
とができる。Therefore, by arbitrarily setting the program of the control unit 11, it is possible to continuously change the wall thickness of the parison 12 by changing the required interval of the discharge ports 5.
【０００８】[0008]
【発明が解決しようとする課題】従来の中空成形機のパ
リソン制御方法及び装置は、以上のように構成されてい
るため、次のような課題が存在していた。すなわち、ダ
イに対してコアが上下動するため、コアの側部位置から
溶融樹脂を供給することしかできず、そのため、樹脂の
円周方向の流れが不均一となり、偏肉防止が十分に行わ
れなかった。また、前述の欠点によって、樹脂の滞留が
発生し、ロングランの運転が難しく、かつ、滑らかな外
観のパリソンが得られなかった。Since the conventional parison control method and device for the hollow molding machine are configured as described above, the following problems exist. That is, since the core moves up and down with respect to the die, it is only possible to supply the molten resin from the side position of the core, which results in uneven flow of the resin in the circumferential direction and sufficient thickness deviation prevention. I didn't understand. Further, due to the above-mentioned drawbacks, resin retention occurs, it is difficult to operate for a long run, and a parison having a smooth appearance cannot be obtained.
【０００９】本発明は、以上のような課題を解決するた
めになされたもので、特に、電動モータ等を介してダイ
を上下動させることによりパリソンの肉厚を制御するよ
うにした中空成形機のパリソン制御方法及び装置を提供
することを目的とする。The present invention has been made to solve the above problems, and in particular, a hollow molding machine in which the wall thickness of a parison is controlled by vertically moving a die through an electric motor or the like. The present invention aims to provide a parison control method and device.
【００１０】[0010]
【課題を解決するための手段】本発明による中空成形機
のパリソン制御方法は、クロスヘッドに固定して設けら
れたコアに対してダイを電動モータにより上下動させる
ことにより、前記コアとダイにより形成される吐出口か
ら吐出されるパリソンに肉厚を自在に制御する方法であ
る。A method for controlling a parison for a hollow molding machine according to the present invention is characterized in that a core and a die are moved up and down with respect to a core fixedly provided on a crosshead by an electric motor. This is a method of freely controlling the thickness of the parison discharged from the discharge port formed.
【００１１】さらに詳細には、前記電動モータはプログ
ラムにより制御される方法である。More specifically, the electric motor is a method controlled by a program.
【００１２】本発明による中空成形機のパリソン制御装
置は、クロスヘッドのダイ及びコア間の吐出口からパリ
ソンを吐出するようにした中空成形機のパリソン制御装
置において、前記クロスヘッド上に固定され少なくとも
減速機及び第１ねじ部を有する支持体と、前記減速機に
接続された電動モータと、前記第１ねじ部に螺合する第
２ねじ部を有しかつ前記ダイに連結した連結体とを備
え、前記モータ及び連結体を介して前記ダイが固定配置
の前記コアに対して上下動するようにした構成である。A parison control device for a hollow molding machine according to the present invention is a parison control device for a hollow molding machine in which a parison is discharged from a discharge port between a die and a core of the crosshead, and is fixed on at least the crosshead. A support having a speed reducer and a first screw portion; an electric motor connected to the speed reducer; and a connecting body having a second screw portion screwed into the first screw portion and connected to the die. The die is configured to move up and down with respect to the fixed core by way of the motor and the connecting body.
【００１３】さらに詳細には、前記第１ねじ部と減速機
との間にはスラストベアリングが設けられている構成で
ある。More specifically, a thrust bearing is provided between the first screw portion and the speed reducer.
【００１４】さらに詳細には、前記第１ねじ部はオスね
じよりなり、前記第２ねじ部はメスねじよりなる構成で
ある。More specifically, the first screw portion is a male screw and the second screw portion is a female screw.
【００１５】さらに詳細には、前記支持体及び連結体は
通風孔を有する構成である。More specifically, the supporting member and the connecting member have a ventilation hole.
【００１６】さらに詳細には、前記電動モータは、プロ
グラムにより制御される構成である。More specifically, the electric motor is controlled by a program.
【００１７】[0017]
【作用】本発明による中空成形機のパリソン制御方法及
び装置においては、制御部の指令信号に基づいて電動モ
ータが回転すると、減速機、各ねじ部及び連結体を介し
てダイが上下動するため、ダイとコア間の吐出口のギャ
ップがこの指令信号に沿って変化し、押出機から送られ
てきた溶融樹脂すなわちパリソンの肉厚を自在に制御す
ることができる。また、このクロスヘッド内のコアの中
子の円中心にこの溶融樹脂を供給するため、クロスヘッ
ドのクロスヘッド本体と中子との間に形成された樹脂流
路において、溶融樹脂の円周方向の流れが均一となり、
偏肉防止を図ることができる。In the method and apparatus for controlling the parison of the blow molding machine according to the present invention, when the electric motor rotates based on the command signal from the control section, the die moves up and down through the speed reducer, each screw section and the connecting body. The gap between the discharge port between the die and the core changes according to this command signal, and the thickness of the molten resin, that is, the parison sent from the extruder can be controlled freely. Further, in order to supply the molten resin to the center of the core of the core in the crosshead, in the resin flow path formed between the crosshead body of the crosshead and the core, the circumferential direction of the molten resin Flow is uniform,
It is possible to prevent uneven thickness.
【００１８】[0018]
【実施例】以下、図面と共に本発明による中空成形機の
パリソン制御方法及び装置の好適な実施例について詳細
に説明する。なお、従来例と同一又は同等部分について
は同一符号を用いて説明する。図１及び図２は本発明に
よる中空成形機のパリソン制御装置を示すもので、図１
は全体構造を示す構成図、図２は図１のＡ−Ａ線による
断面図である。図において符号１で示されるものは、押
出機２に接続されたクロスヘッド本体１Ａ、このクロス
ヘッド本体１Ａ内の軸心位置に設けられコア６を有する
スパイダー式の中子６Ａ及びこのコア６の外周に同軸配
置されたダイ３とからなるクロスヘッドであり、このコ
ア６とダイ３間には輪状の吐出口５が形成されている。
なお、この吐出口５はその軸方向において傾斜してお
り、このダイ３を矢印Ｂに沿って上下動させることによ
りこの吐出口５のギャップ幅を周知のように可変させる
ことができるように構成されている。なお、前記中子６
Ａは図２に示すように、周知の２個のスパイダ６Ａａを
介してクロスヘッド本体１Ａに一体結合されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a method and apparatus for controlling a parison of a blow molding machine according to the present invention will be described in detail below with reference to the drawings. In addition, the same or equivalent portions as those of the conventional example will be described using the same reference numerals. 1 and 2 show a parison controller for a blow molding machine according to the present invention.
2 is a configuration diagram showing the entire structure, and FIG. 2 is a sectional view taken along the line AA of FIG. In the figure, reference numeral 1 indicates a crosshead body 1A connected to the extruder 2, a spider-type core 6A having a core 6 provided at an axial center position in the crosshead body 1A, and the core 6A. The cross head is composed of a die 3 coaxially arranged on the outer circumference, and a ring-shaped ejection port 5 is formed between the core 6 and the die 3.
The discharge port 5 is inclined in the axial direction, and by moving the die 3 up and down along the arrow B, the gap width of the discharge port 5 can be varied as is known. Has been done. In addition, the core 6
As shown in FIG. 2, A is integrally connected to the crosshead body 1A through two well-known spiders 6Aa.
【００１９】前記中子６Ａとクロスヘッド本体１Ａの案
内孔１Ａａとによって形成された樹脂流路１Ａｂの上部
軸心位置Ｃには、前記押出機２が接続され、この押出機
２から押出された溶融樹脂４が前記上部軸心位置Ｃから
前記樹脂流路１Ａａ内に供給され、樹脂流路１Ａａの円
周方向の溶融樹脂の流れが均一になり、偏肉防止が得ら
れるように構成されている。The extruder 2 is connected to the upper axial center position C of the resin flow path 1Ab formed by the core 6A and the guide hole 1Aa of the crosshead body 1A, and the resin is extruded from the extruder 2. The molten resin 4 is supplied from the upper axial center position C into the resin flow passage 1Aa, the flow of the molten resin in the circumferential direction of the resin flow passage 1Aa becomes uniform, and uneven thickness is prevented. There is.
【００２０】前記クロスヘッド１をなすクロスヘッド本
体１Ａ上には、上部に減速機２１を有するほぼ筒状の支
持体３０が固定ボルト３１によって固定されており、こ
の支持体３０には、前記減速機２１にスラストベアリン
グ２０（なお、スラストベアリング以外の軸受も可）を
介して接続された軸体２０Ａが結合されている。なお、
この支持体３０の側部には、外部と連通する通風孔３０
Ａが形成されている。On the crosshead body 1A forming the crosshead 1, a substantially cylindrical support 30 having a speed reducer 21 on the top is fixed by a fixing bolt 31, and the support 30 has the speed reducer. A shaft body 20A connected to the machine 21 via a thrust bearing 20 (a bearing other than the thrust bearing is also possible) is coupled. In addition,
Vent holes 30 communicating with the outside are provided on the side portions of the support body 30.
A is formed.
【００２１】前記軸体２０Ａの下部に形成されたオスね
じ（メスねじでも可）からなる第１ねじ部２０Ａａに
は、前記ダイ３と連結するための連結体３５のメスねじ
（オスねじでも可）からなる第２ねじ部３２が螺合して
おり、この第１ねじ部２０Ａａの回転により連結体３５
を介してダイ３が固定配置のコア６に対して上下動する
ように構成されている。なお、この連結体３５の側部に
は、外部と連通する通風孔３５Ａが形成されている。The first screw portion 20Aa formed of a male screw (or a female screw) formed in the lower portion of the shaft body 20A has a female screw (a male screw or a male screw) of the connecting body 35 for connecting with the die 3. ) Are screwed together, and rotation of the first screw portion 20Aa causes the connection body 35 to rotate.
The die 3 is configured to move up and down with respect to the fixedly arranged core 6 via the. In addition, a ventilation hole 35A communicating with the outside is formed on a side portion of the connecting body 35.
【００２２】前記減速機２１には、制御部１１及び検出
器２２ｂを介してサーボ制御されるサーボモータ２２の
回転軸２２ａが接続されており、制御部１１のプログラ
ム（図示せず）によって回転するサーボモータ２２によ
って減速機２１が高精度回転される構成である。The speed reducer 21 is connected to a rotary shaft 22a of a servomotor 22 which is servo-controlled via a control unit 11 and a detector 22b, and is rotated by a program (not shown) of the control unit 11. The reduction gear 21 is rotated with high precision by the servo motor 22.
【００２３】次に、前述の構成においてパリソンの肉厚
制御を行う場合について述べる。まず、予め設定された
プログラムを内蔵した制御部１１によってサーボモータ
２２を回転させると、このサーボモータ２２の回転が、
減速機２１、スラストベアリング２０及び軸体２０Ａを
介して第１ねじ部２０Ａａを回転すると、第２ねじ部３
２を介して連結体３５及びダイ３が矢印Ｂに沿って上下
動し、固定配置のコア６に対する吐出口５のギャップ幅
を可変とすることができる。Next, the case where the thickness of the parison is controlled in the above configuration will be described. First, when the servo motor 22 is rotated by the control unit 11 having a preset program, the rotation of the servo motor 22 is
When the first screw portion 20Aa is rotated via the speed reducer 21, the thrust bearing 20 and the shaft body 20A, the second screw portion 3
The coupling body 35 and the die 3 can move up and down along the arrow B via 2, and the gap width of the discharge port 5 with respect to the fixedly arranged core 6 can be made variable.
【００２４】従って、この制御部１１のプログラムを任
意に設定しておくことにより、吐出口５のギャップ幅を
任意に変え、パリソン１２の肉厚を連続的に自在に変え
ることができる。なお、前述はサーボモータとしたが、
例えば、ステップモータ等を含むその他の電動モータを
用いることができる。Therefore, by arbitrarily setting the program of the control unit 11, the gap width of the discharge port 5 can be changed arbitrarily, and the wall thickness of the parison 12 can be continuously changed freely. Although the servo motor was used in the above,
For example, other electric motors including a step motor and the like can be used.
【００２５】[0025]
【発明の効果】本発明による中空成形機のパリソン制御
方法及び装置は以上のように構成されているため、次の
ような効果を得ることができる。すなわち、ダイに形成
される吐出口の幅を変えるダイをプログラム制御された
モータによって上下動させているため、従来の油圧構成
に比べると、油洩れによるパリソンの汚損がなく、成形
品のクリーン化を容易に達成できる。また、従来の油圧
構成に比べると、そのコストが大幅に低下し、スペース
も大幅に小形化できる。また、動力源としての容量も、
油圧構成では３.７ＫＷ必要であったが、本発明では０.
７ＫＷのＡＣサーボモータとなるため、大幅な省エネと
なる。さらに、モータに直結した検出器によって位置検
出を行っているため、フィードバック用検出器が不要と
なり、構成が簡素化されて小形化を達成することができ
る。また、クロスヘッド本体と中子の間の樹脂流路に上
部中心位置より樹脂を流入することができるので、樹脂
の円周方向の流れが均一になり偏肉防止が図れる。ま
た、前述の効果により、樹脂の滞留防止が図れるので成
形のロングランができ、且つ、外観が滑らかなパリソン
が得られる。また、樹脂圧力が低くなり、スパイダーの
合流線がわずかに出たにしても、容易にこの線を金型の
合せ部に合せることが可能であるので成形品（パリソ
ン）は良質のものが得られる。Since the method and apparatus for controlling the parison of the blow molding machine according to the present invention are configured as described above, the following effects can be obtained. In other words, since the die that changes the width of the discharge port formed in the die is moved up and down by a program-controlled motor, there is no contamination of the parison due to oil leakage compared to the conventional hydraulic configuration, and the molded product is cleaner. Can be easily achieved. In addition, compared with the conventional hydraulic structure, the cost is significantly reduced and the space can be significantly reduced. Also, the capacity as a power source,
In the hydraulic configuration, 3.7 kW was required, but in the present invention, it is 0.
Since it is a 7 kW AC servo motor, it saves a great deal of energy. Further, since the position is detected by the detector directly connected to the motor, the feedback detector is not required, and the configuration is simplified and the miniaturization can be achieved. Further, since the resin can flow into the resin flow path between the crosshead body and the core from the center position of the upper portion, the flow of the resin in the circumferential direction becomes uniform and uneven thickness can be prevented. Further, because of the above-mentioned effect, the retention of the resin can be prevented, so that a long run of molding can be performed and a parison having a smooth appearance can be obtained. Also, even if the resin pressure becomes low and the spider's confluence line appears slightly, it is possible to easily match this line with the mating part of the mold, so a good molded product (parison) can be obtained. To be
【図１】本発明による中空成形機のパリソン制御装置を
示す構成図である。FIG. 1 is a configuration diagram showing a parison control device of a blow molding machine according to the present invention.
【図２】図１のＡ−Ａ断面図である。FIG. 2 is a sectional view taken along line AA of FIG.
【図３】従来装置の構成図である。FIG. 3 is a configuration diagram of a conventional device.
【図４】図３の要部を示す拡大断面図である。FIG. 4 is an enlarged sectional view showing a main part of FIG.
１ クロスヘッド ３ ダイ ５ 吐出口 ６ コア １２ パリソン ２０ スラストベアリング ２１ 減速機 ２２ サーボモータ（電動モータ） ２０Ａａ 第１ねじ部 ３０ 支持体 ３２ 第２ねじ部 ３５ 連結体 1 Crosshead 3 Die 5 Discharge Port 6 Core 12 Parison 20 Thrust Bearing 21 Reducer 22 Servo Motor (Electric Motor) 20Aa 1st Screw Part 30 Support 32 Second Screw Part 35 Connected Body
Claims (7)
コア(6)に対してダイ(3)を電動モータ(22)により上下動
させることにより、前記コア(6)とダイ(3)により形成さ
れる吐出口(5)から吐出されるパリソン(12)の肉厚を自
在に制御することを特徴とする中空成形機のパリソン制
御方法。1. The core (6) and the die (3) are moved up and down by an electric motor (22) with respect to a core (6) fixed to the crosshead (1). A method for controlling a parison for a hollow molding machine, characterized in that the thickness of a parison (12) discharged from a discharge port (5) formed by (4) is freely controlled.
制御されることを特徴とする請求項１記載の中空成形機
のパリソン制御方法。2. The method for controlling a parison of a blow molding machine according to claim 1, wherein the electric motor (22) is controlled by a program.
間の吐出口(5)からパリソン(12)を吐出するようにした
中空成形機のパリソン制御装置において、前記クロスヘ
ッド(1)上に固定され少なくとも減速機(21)及び第１ね
じ部(20Aa)を有する支持体(30)と、前記減速機(21)に接
続された電動モータ(22)と、前記第１ねじ部(20Aa)に螺
合する第２ねじ部(32)を有しかつ前記ダイ(3)に連結し
た連結体(35)とを備え、前記モータ(22)及び連結体(35)
を介して前記ダイ(3)が固定配置の前記コア(6)に対して
上下動するように構成したことを特徴とする中空成形機
のパリソン制御装置。3. The die (3) and core (6) of the crosshead (1)
A parison control device for a hollow molding machine, which is configured to discharge a parison (12) from a discharge port (5) between the at least a speed reducer (21) and a first screw portion (20Aa) fixed on the crosshead (1). ), An electric motor (22) connected to the speed reducer (21), and a second screw portion (32) screwed to the first screw portion (20Aa). A connecting body (35) connected to the die (3), the motor (22) and the connecting body (35)
A parison control device for a hollow molding machine, wherein the die (3) is configured to move up and down with respect to the core (6) in a fixed arrangement via the.
間にはスラストベアリング(20)が設けられていることを
特徴とする請求項３記載の中空成形機のパリソン制御装
置。4. A parison control for a hollow molding machine according to claim 3, wherein a thrust bearing (20) is provided between the first screw portion (20Aa) and the speed reducer (21). apparatus.
り、前記第２ねじ部(32)はメスねじよりなることを特徴
とする請求項３又は４記載の中空成形機のパリソン制御
装置。5. The parison control for a hollow molding machine according to claim 3, wherein the first screw portion (20Aa) is a male screw, and the second screw portion (32) is a female screw. apparatus.
(30A,35A)を有することを特徴とする請求項３ないし５
の何れかに記載の中空成形機のパリソン制御装置。6. The support body (30) and the connecting body (35) are ventilation holes.
(30A, 35A) is included, The claim 3 thru | or 5 characterized by the above-mentioned.
A parison control device for a hollow molding machine according to any one of 1.
り制御される構成よりなることを特徴とする請求項３な
いし６の何れかに記載の中空成形機のパリソン制御装
置。7. The parison control device for a blow molding machine according to claim 3, wherein the electric motor (22) is configured to be controlled by a program.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6040063A JP2760746B2 (en) | 1994-03-10 | 1994-03-10 | Parison control device for blow molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6040063A JP2760746B2 (en) | 1994-03-10 | 1994-03-10 | Parison control device for blow molding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07246651A true JPH07246651A (en) | 1995-09-26 |
| JP2760746B2 JP2760746B2 (en) | 1998-06-04 |
Family
ID=12570474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6040063A Expired - Lifetime JP2760746B2 (en) | 1994-03-10 | 1994-03-10 | Parison control device for blow molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2760746B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009262364A (en) * | 2008-04-23 | 2009-11-12 | Japan Steel Works Ltd:The | Method and device for driving die ring of cross head |
| CN106406366A (en) * | 2016-11-15 | 2017-02-15 | 中山市富邦机械有限公司 | Material tube wall thickness control system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0427416A (en) * | 1990-05-21 | 1992-01-30 | Ohtsu Tire & Rubber Co Ltd :The | Honeycomb shaped deodorant filter |
| JPH04257416A (en) * | 1990-09-25 | 1992-09-11 | St Soffiaggio Tecnica Srl | Thermoplastic resin polymer extruder |
| JPH0592481A (en) * | 1991-10-01 | 1993-04-16 | Japan Steel Works Ltd:The | Parison controller in hollow molding machine |
| JPH07227900A (en) * | 1994-02-21 | 1995-08-29 | Tahara:Kk | Parison thickness control method in blow molding machine |
-
1994
- 1994-03-10 JP JP6040063A patent/JP2760746B2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0427416A (en) * | 1990-05-21 | 1992-01-30 | Ohtsu Tire & Rubber Co Ltd :The | Honeycomb shaped deodorant filter |
| JPH04257416A (en) * | 1990-09-25 | 1992-09-11 | St Soffiaggio Tecnica Srl | Thermoplastic resin polymer extruder |
| JPH0592481A (en) * | 1991-10-01 | 1993-04-16 | Japan Steel Works Ltd:The | Parison controller in hollow molding machine |
| JPH07227900A (en) * | 1994-02-21 | 1995-08-29 | Tahara:Kk | Parison thickness control method in blow molding machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009262364A (en) * | 2008-04-23 | 2009-11-12 | Japan Steel Works Ltd:The | Method and device for driving die ring of cross head |
| CN106406366A (en) * | 2016-11-15 | 2017-02-15 | 中山市富邦机械有限公司 | Material tube wall thickness control system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2760746B2 (en) | 1998-06-04 |
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