JPH0442165B2 - - Google Patents
Info
- Publication number
- JPH0442165B2 JPH0442165B2 JP58073955A JP7395583A JPH0442165B2 JP H0442165 B2 JPH0442165 B2 JP H0442165B2 JP 58073955 A JP58073955 A JP 58073955A JP 7395583 A JP7395583 A JP 7395583A JP H0442165 B2 JPH0442165 B2 JP H0442165B2
- Authority
- JP
- Japan
- Prior art keywords
- parison
- nozzle
- mandrel
- thickness
- uneven 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.)
- Expired - Lifetime
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
- B29C48/327—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles being adjustable, i.e. having adjustable exit sections with centering means
-
- 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
- B29C48/03—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
- B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
-
- 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
- B29C48/92—Measuring, controlling or regulating
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92571—Position, e.g. linear or angular
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92609—Dimensions
- B29C2948/92647—Thickness
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92904—Die; Nozzle zone
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
技術分野
本発明は、偏肉を自動的に制御しながらパリソ
ンを注出することの可能なパリソン偏肉自動制御
装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to an automatic parison thickness unevenness control device that is capable of dispensing parisons while automatically controlling the thickness unevenness.
従来技術
従来、第１図に示す如き通常のパリソン注出装
置１を使用してパリソン偏肉を持たせることが行
なわれていた。即ち、このパリソン注出装置１
は、外容器２とノズル３をボルト４で接合し、外
容器２及びノズル３内側にマンドレル５を固設し
て、ノズル３とマンドレル５間の間隙にパリソン
流路を形成している。このパリソン注出装置１に
於いて偏肉を有するパリソンを注出する場合は、
外容器２及びノズル３に穿設されている孔に貫通
されているボルト４を緩めて、固定している外容
器２及びマンドレル５に対してノズル３を所定方
向に移動させた後、夫々のボルト４を再度締着し
てノズル３とマンドレル５間に幅の不均一な流路
を形成する。そして、この様な流路に溶融原材料
を流し込み偏肉を有するパリソンを注出すること
が可能となる。Prior Art Conventionally, a normal parison pouring device 1 as shown in FIG. 1 has been used to provide parisons with uneven thickness. That is, this parison pouring device 1
In this method, an outer container 2 and a nozzle 3 are joined with bolts 4, a mandrel 5 is fixedly installed inside the outer container 2 and the nozzle 3, and a parison flow path is formed in the gap between the nozzle 3 and the mandrel 5. When pouring out a parison with uneven thickness using this parison pouring device 1,
After loosening the bolts 4 passed through holes drilled in the outer container 2 and nozzle 3 and moving the nozzle 3 in a predetermined direction relative to the fixed outer container 2 and mandrel 5, The bolts 4 are tightened again to form a flow path with non-uniform width between the nozzle 3 and the mandrel 5. Then, it becomes possible to pour the molten raw material into such a flow path and pour out a parison having uneven thickness.
しかしながら、上述の如き方法では、ノズル３
の移動範囲が限定的であり、従つて、パリソンを
局部的に偏肉させることは不可能である。更に、
ノズル３の移動の都度作業者が手先業によりボル
ト４を操作することが必要であるため、連続自動
的にノズル３の位置を変化させることが不可能で
あり、従つて、偏肉厚さが連続的に変化している
パリソンを注出することができない。 However, in the above method, the nozzle 3
The movement range of the parison is limited, and therefore it is impossible to locally uneven thickness of the parison. Furthermore,
Since it is necessary for the worker to manually operate the bolt 4 each time the nozzle 3 is moved, it is impossible to continuously and automatically change the position of the nozzle 3. Therefore, uneven wall thickness may occur. It is not possible to pour out continuously changing parisons.
目 的
本発明は、以上の点に鑑みなされたものであ
り、パリソン偏肉を連続的に変化させることが可
能なパリソン偏肉自動制御装置を提供することを
目的とする。Purpose The present invention has been made in view of the above points, and an object of the present invention is to provide an automatic parison thickness unevenness control device that can continuously change parison thickness unevenness.
構 成
以下、本発明の実施の態様を添付の図面を参照
して詳細に説明する。第２図の正断面図及び第３
図の部分断面平面図に示す如く、本例のパリソン
偏肉制御装置６は、外容器７の下側に移動可能に
ノズル８が設けてあり、ノズル８の内側にはマン
ドレル９が、外容器７と同心状に固定されてい
る。Configuration Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Front sectional view of Figure 2 and Figure 3
As shown in the partially sectional plan view of the figure, the parison thickness unevenness control device 6 of this example has a nozzle 8 movably provided below the outer container 7, and a mandrel 9 inside the nozzle 8. It is fixed concentrically with 7.
外容器７の下側にはノズル８を挟み対向する４
対のシリンダ１０が配設されており、夫々のシリ
ンダ１０内にはピストン１１が内設されている。
このピストン１１には連接棒１２の一方の端部が
連結されており、連接棒１２の他方の端部はノズ
ル８の外周面と連結されている。 At the bottom of the outer container 7 are 4 facing each other with a nozzle 8 interposed therebetween.
A pair of cylinders 10 are arranged, and a piston 11 is disposed inside each cylinder 10.
One end of a connecting rod 12 is connected to the piston 11, and the other end of the connecting rod 12 is connected to the outer peripheral surface of the nozzle 8.
シリンダ１０内のピストン１１は、第４図に示
す如く、制御装置１４から所定のプログラムに従
つて制御信号を受けて油圧装置１３からシリンダ
１０内に供給又は回収される油の油圧により、往
復運動可能な機構となつている。又、対向して配
設された対をなすシリンダ１０，１０内のピスト
ン１１，１１は互いに同方向に往復運動するよう
に制御されている。従つて、４対の連接棒１２に
より夫々のピストン１１と連結されているノズル
８は、複数のピストン１１の往復動作を所定のプ
ログラムに沿つて制御することにより、連続的に
所望の位置に移動可能のとなる。また、ノズル８
の移動は２対のシリンダとピストンによつて行な
うことも可能である。連続的に移動するノズル８
により、固定しているマンドレル９の間隙が連続
的に変化可能となる。この様に流路幅が連続的に
変化するノズル８とマンドレル９との間に形成さ
れる流路Ａに溶融した原材料物質を流し込むと、
連続的に偏肉部位が変化するパリソンを得ること
ができる。因つて、パリソンの注出工程中に自在
に偏肉箇所を変えることが可能である。 As shown in FIG. 4, the piston 11 in the cylinder 10 receives a control signal from the control device 14 in accordance with a predetermined program, and is moved back and forth by the hydraulic pressure of oil supplied or collected from the hydraulic device 13 into the cylinder 10. It is a possible mechanism. Further, the pistons 11, 11 in the pair of cylinders 10, 10, which are arranged opposite to each other, are controlled to reciprocate in the same direction. Therefore, the nozzle 8, which is connected to each piston 11 by four pairs of connecting rods 12, is continuously moved to a desired position by controlling the reciprocating motion of the plurality of pistons 11 according to a predetermined program. It becomes possible. Also, nozzle 8
The movement can also be performed by two pairs of cylinders and pistons. Continuously moving nozzle 8
This allows the gap between the fixed mandrels 9 to be changed continuously. When a molten raw material is poured into the channel A formed between the nozzle 8 and the mandrel 9 whose channel width changes continuously in this way,
It is possible to obtain a parison in which the uneven thickness part changes continuously. Therefore, it is possible to freely change the uneven thickness portion during the pouring process of the parison.
次に、本実施例の動作について説明する。パリ
ソンの所望する偏肉部位と油圧によるピストンの
運動が対応すべく設定された所定の油圧制御プロ
グラムに従つて、第４のブロツク図に示す如く、
制御装置１４から制御信号が油圧装置１３に出力
され、油圧装置１３内の油圧ポンプや制御弁が制
御信号に応じて作動し、各シリンダ１０内に所定
の圧力と流量を有する油を給送し、シリンダ１０
内のピストン１１が夫々所定の距離だけ移動され
る。そして対になつているシリンダ１０の例え
ば、シリンダＢ内のピストンとシリンダＣ内のピ
ストンが互いに同方向に移動して、連接棒１２に
より連結されているノズル８を移動させる。他の
対になつているシリンダ内のピストンも夫々制御
信号に応じて移動して、所定位置にノズル８が移
動し、所望の偏肉部位を有するパリソンを注出可
能な流路Ａが形成される。 Next, the operation of this embodiment will be explained. As shown in the fourth block diagram, according to a predetermined hydraulic control program set so that the movement of the piston by hydraulic pressure corresponds to the desired uneven thickness part of the parison,
A control signal is output from the control device 14 to the hydraulic device 13, and the hydraulic pump and control valve in the hydraulic device 13 operate according to the control signal to supply oil with a predetermined pressure and flow rate into each cylinder 10. , cylinder 10
The inner pistons 11 are each moved by a predetermined distance. The paired cylinders 10, for example, the piston in cylinder B and the piston in cylinder C, move in the same direction to move the nozzle 8 connected by the connecting rod 12. The pistons in the other pairs of cylinders also move in response to control signals, and the nozzle 8 moves to a predetermined position, forming a flow path A that can pour out a parison having a desired thickness unevenness. Ru.
この流路Ａに溶融した原材料物質を流入させる
ことにより所望の箇所に偏肉を持たせたパリソン
が注出される。この後、所望する偏肉部位が変わ
る場合は、それに応じて直ちに制御信号が発せら
れ夫々のピストン１１が油圧により夫々の方向に
移動して、従つてノズル８が上述とは異なる位置
に移動され、新たな部分が偏肉状態に形成されて
パリソンが注出される。この様に、制御装置と油
圧装置により連続的にノズル８を所定のプログラ
ムに従つて変位させて所望の偏肉を有するパリソ
ンを注出し、この注出されたパリソンを所定の成
形型に収納し型締を行なつて加圧気体をパリソン
に吹き込めば、肉厚一定の多数の曲部を有する中
空成形品を得ることが可能である。 By flowing the molten raw material into this channel A, a parison having uneven thickness at a desired location is poured out. After this, if the desired uneven thickness region changes, a control signal is immediately issued in response to the change, and the respective pistons 11 are moved in respective directions by hydraulic pressure, so that the nozzle 8 is moved to a position different from the above-mentioned position. , a new portion is formed with uneven thickness, and the parison is poured out. In this way, the nozzle 8 is continuously displaced according to a predetermined program by the control device and the hydraulic device to pour out a parison having a desired uneven thickness, and the poured parison is stored in a predetermined mold. By clamping the mold and blowing pressurized gas into the parison, it is possible to obtain a hollow molded product having a constant wall thickness and a large number of curved parts.
効 果
以上詳述した如く、本発明によれば、外側の注
出径路形成部材を所定のプログラムに従つてパリ
ソン注出時に連続的に移動させることにより、所
望の偏肉を有するパリソンを容易に注出すること
ができる。従つて、肉厚が均一な曲部を有する複
雑な形状の中空成形品を少ない工程数でブロー成
形方により製造することが可能となる。この場
合、制御が容易である油圧装置を注出径路形成部
材を移動させる駆動装置として使用することによ
り、より正確かつ容易に所望の偏肉形状のパリソ
ンを注出することができる。尚、本発明は上記の
特定の実施例に限定されるべきものではなく、本
発明の技術範囲に於いて種々の変形が可能である
ことは勿論である。例えば、ノズルとマンドレル
とはその一方又は両方を移動させる構成とするこ
とも可能である。Effects As detailed above, according to the present invention, by continuously moving the outer pouring path forming member according to a predetermined program when pouring out the parison, it is possible to easily form a parison having a desired uneven thickness. Can be poured out. Therefore, it becomes possible to manufacture a complex-shaped hollow molded product having a curved portion with a uniform wall thickness using a blow molding method with a small number of steps. In this case, by using a hydraulic device that is easy to control as a drive device for moving the pouring path forming member, a parison having a desired uneven thickness shape can be poured more accurately and easily. It should be noted that the present invention is not limited to the specific embodiments described above, and it goes without saying that various modifications can be made within the technical scope of the present invention. For example, one or both of the nozzle and the mandrel may be moved.
第１図は従来の偏肉を有するパリソンを注出す
るパリソン注出装置を示した断面図、第２図は本
発明の１実施例であるパリソン偏肉制御装置を示
した正断面図、第３図は第２図の部分断面平面
図、第４図は本発明の１実施例の駆動制御機構を
示したブロツク図である。
（符号の説明）、７：外容器、８：ノズル、
９：マンドレル、１０：シリンダ、１１：ピスト
ン、１２：連接棒。
Fig. 1 is a sectional view showing a conventional parison pouring device for dispensing parisons having uneven thickness, and Fig. 2 is a front sectional view showing a parison thickness unevenness control device which is an embodiment of the present invention. 3 is a partially sectional plan view of FIG. 2, and FIG. 4 is a block diagram showing a drive control mechanism according to an embodiment of the present invention. (Explanation of symbols), 7: Outer container, 8: Nozzle,
9: Mandrel, 10: Cylinder, 11: Piston, 12: Connecting rod.
Claims (1)
於いて、ノズルと、前記ノズルの内側に配設した
マンドレルとを相対的に移動自在に設け、入力さ
れる偏肉制御信号に応答して前記ノズルと前記マ
ンドレル間の間〓を自動的に変化させる駆動手段
を設け、かつ該駆動手段が円周状に配設した複数
個の油圧装置を有することを特徴とするパリソン
偏肉自動制御装置。1. In a thickness unevenness control device capable of controlling uneven thickness of a parison, a nozzle and a mandrel disposed inside the nozzle are provided so as to be relatively movable, and in response to an input thickness unevenness control signal. An automatic control device for parison thickness unevenness, characterized in that a drive means for automatically changing the distance between the nozzle and the mandrel is provided, and the drive means has a plurality of hydraulic devices arranged circumferentially. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58073955A JPS59199220A (en) | 1983-04-28 | 1983-04-28 | Apparatus for controlling irregular thickness of wall of parison |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58073955A JPS59199220A (en) | 1983-04-28 | 1983-04-28 | Apparatus for controlling irregular thickness of wall of parison |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59199220A JPS59199220A (en) | 1984-11-12 |
| JPH0442165B2 true JPH0442165B2 (en) | 1992-07-10 |
Family
ID=13533007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58073955A Granted JPS59199220A (en) | 1983-04-28 | 1983-04-28 | Apparatus for controlling irregular thickness of wall of parison |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59199220A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3936496A1 (en) * | 1989-11-02 | 1991-05-08 | Krauss Maffei Ag | CENTERING DEVICE FOR A TUBE EXTRUSION HEAD |
| DE29707060U1 (en) * | 1997-04-21 | 1997-07-10 | Fischer- W. Müller Blasformtechnik GmbH, 53842 Troisdorf | Extrusion head for blow molding hollow bodies |
| JP2008238727A (en) * | 2007-03-28 | 2008-10-09 | Japan Steel Works Ltd:The | Method and apparatus for controlling parison deviation in a hollow molding machine |
| CN106926440B (en) * | 2015-12-29 | 2018-11-20 | 广东金明精机股份有限公司 | The adjustment structure and method of adjustment of plastic hollow vessel green body extrusion blow mold die gap |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5235981Y2 (en) * | 1972-10-11 | 1977-08-16 |
-
1983
- 1983-04-28 JP JP58073955A patent/JPS59199220A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59199220A (en) | 1984-11-12 |
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