JPS5812142B2 - Blow molding machine - Google Patents
Blow molding machineInfo
- Publication number
- JPS5812142B2 JPS5812142B2 JP54104730A JP10473079A JPS5812142B2 JP S5812142 B2 JPS5812142 B2 JP S5812142B2 JP 54104730 A JP54104730 A JP 54104730A JP 10473079 A JP10473079 A JP 10473079A JP S5812142 B2 JPS5812142 B2 JP S5812142B2
- Authority
- JP
- Japan
- Prior art keywords
- parison
- wall thickness
- thickness distribution
- core
- molding machine
- 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
- 238000000071 blow moulding Methods 0.000 title claims description 4
- 238000002347 injection Methods 0.000 claims description 12
- 239000007924 injection Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 description 5
- 238000000465 moulding Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 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
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/78—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
- 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
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
-
- 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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/475—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using pistons, accumulators or press rams
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/78—Measuring, controlling or regulating
- B29C2049/7873—Extrusion speed; Extruded preform position or length; Extrusion fall speed
-
- 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
- B29C2948/92009—Measured parameter
- B29C2948/92076—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
- B29C2948/92323—Location or phase of measurement
- B29C2948/92466—Auxiliary unit, e.g. for external melt filtering, re-combining or transfer between units
-
- 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
-
- 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
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/42412—Marking or printing
- B29C49/42413—Marking or printing with a pattern for analysing deformation
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)
Description
【発明の詳細な説明】
本発明はパリソンパーキング機能を備えたブロー成形機
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a blow molding machine equipped with a parison parking function.
プラスチックのブロー成形は成形機のパリソンヘッドよ
り溶融円筒体（パリソン）を射出し、これを一対の割金
型で挾持して中に空気を吸込んで形成するものであり、
プラスチックの中空容器は殆んどこの方法で製造されて
いる。Plastic blow molding involves injecting a molten cylindrical body (parison) from the parison head of a molding machine, which is then held between a pair of split molds and sucking air into the mold.
Most hollow plastic containers are manufactured using this method.
前記方法で製造される中空容器の成形品の肉厚分布は成
形時のプラスチックの延び及び成形前のパリソンの肉厚
分布で決定される。The wall thickness distribution of the hollow container molded product manufactured by the above method is determined by the elongation of the plastic during molding and the wall thickness distribution of the parison before molding.
従って成形品を所定の肉厚分布とする為には、射出され
るパリソンの肉厚を連続的に変化させ且つ肉厚を変化さ
せた位置を金型の所定位置に合致させなければならない
。Therefore, in order to make the molded product have a predetermined thickness distribution, it is necessary to continuously change the wall thickness of the injected parison and to match the position where the wall thickness is changed with the predetermined position of the mold.
従来肉厚分布決定の手順としてはパリソンの肉厚を管理
射出したものを一対の金型で挾持して成形し、成形品の
肉厚分布を実測し、その結果によりパリソンの肉厚分布
を修正し、修正後更に金型で成形し成形品の肉厚分布を
実測するという手順を数回繰返した後所定の肉厚分布を
決定するものである。The conventional procedure for determining wall thickness distribution is to control the wall thickness of the parison.The injected material is held between a pair of molds and molded, the wall thickness distribution of the molded product is actually measured, and the wall thickness distribution of the parison is corrected based on the results. After the correction, the molded product is further molded using a mold, and the thickness distribution of the molded product is actually measured. After repeating this procedure several times, a predetermined thickness distribution is determined.
しかし肉厚分布決定過程に於てパリソンの肉厚分布をパ
リソン自体に表示する手段が何ら施されていない為、パ
リソンと金型との位置合せが極めて困難且つ多大の時間
を要していた。However, in the process of determining the wall thickness distribution, no means is provided to display the wall thickness distribution of the parison on the parison itself, making it extremely difficult and time-consuming to align the parison and the mold.
本発明は上記不具合を解消すべくなされたものであって
、射出パリソンの肉厚を変化せしめる可動コアと、パリ
ソンを射出せしめる射出シリンダと、パリソンに刻印す
るマーキング装置とを備え、前記射出シリンダの動きに
対応させ前記コア及びマーキング装置を駆動させる様電
気的に接続したことを特徴とするものである。The present invention has been made to solve the above problems, and includes a movable core that changes the thickness of the injection parison, an injection cylinder that injects the parison, and a marking device that stamps the parison. It is characterized in that the core and the marking device are electrically connected to drive the core and the marking device in response to movement.
以下図面を参照しつつ本発明の詳細な説明する。The present invention will be described in detail below with reference to the drawings.
パリソンヘッド１の中心を貫き上下動自在に配設したコ
ア２の上端部にはサーボシリンダ３、上端にコア検出器
４を係設し、又コア２と同心状に形成した射出材料貯留
用空間部５の上方に上下動可能なリングプランジャ６を
配設する。A servo cylinder 3 is attached to the upper end of the core 2 which penetrates the center of the parison head 1 and is movable up and down, and a core detector 4 is attached to the upper end of the core 2. A space for storing injection material is formed concentrically with the core 2. A ring plunger 6 that can move up and down is disposed above the part 5.
リングプランジャ６のロッド７をパリソンヘッド１の上
方へ突出させ射出シリンダ８と連結し、ロッド７の途中
にリングプランジャ６の移動量を検出するストローク検
出器９を設ける。A rod 7 of the ring plunger 6 is projected above the parison head 1 and connected to an injection cylinder 8, and a stroke detector 9 for detecting the amount of movement of the ring plunger 6 is provided in the middle of the rod 7.
パリソンヘッド１の下端にダイ１０を取付け、該ダイ１
０とコア２先端とで間隙Ｘのノズルを形成せしめる。A die 10 is attached to the lower end of the parison head 1, and the die 1
0 and the tip of the core 2 form a nozzle with a gap X.
ノズル下方には射出されて来るパリソン１１に印点又は
印字するマーキング装置１２を配設する。A marking device 12 for marking or printing on the parison 11 injected is disposed below the nozzle.
マーキング装置１２は例えば次の様な構成をもっている
。The marking device 12 has, for example, the following configuration.
マーキングペン１３を平行リンク１４で支持し該平行リ
ンク１４にソレノイド１５のプランジャ１６を係合せし
めている。A marking pen 13 is supported by a parallel link 14, and a plunger 16 of a solenoid 15 is engaged with the parallel link 14.
マーキング装置１２の更に下方に上部ピントオフ１７と
下部ピンチオフ１８との距離が１２である割金型１９を
配設する。Further below the marking device 12, a split die 19 is disposed with a distance of 12 between an upper focus-off 17 and a lower pinch-off 18.
前記サーボシリンダ３とマーキング装置１２とを制御す
るコントローラ２０を設け、該コントローラ２０に肉厚
分布を設定するピンボード設定器等の設定器２１を連結
すると共に前記コア位置検出器４とストローク検出器９
とを連結する。A controller 20 for controlling the servo cylinder 3 and the marking device 12 is provided, and a setting device 21 such as a pinboard setting device for setting wall thickness distribution is connected to the controller 20, and the core position detector 4 and the stroke detector are connected to the controller 20. 9
Connect with.
上記構成に於てパリソン１１の肉厚はノズル間隙ｘ１つ
まりコア２の上下位置で決定され、パリソン１１の射出
距離はリングプランジャ６の下降距離で決定される。In the above configuration, the thickness of the parison 11 is determined by the nozzle gap x1, that is, the vertical position of the core 2, and the injection distance of the parison 11 is determined by the descending distance of the ring plunger 6.
図面に示したピンボード設定器２１の横軸はパリソン１
１の肉厚、縦軸はパリソン１１の成形長さく射出距離）
１２に対応せしめており、該ピンボード設定器２１によ
り射出距離と肉厚との関係、即ち肉厚分布を設定する。The horizontal axis of the pinboard setting device 21 shown in the drawing is the parison 1.
1, the vertical axis is the molding length of parison 11 and the injection distance)
12, and the pinboard setting device 21 sets the relationship between the injection distance and the wall thickness, that is, the wall thickness distribution.
リングプランジャ６を下降させパリソン１１の射出を開
始すると同時に下降距離、即ちパリソン射出距離がスト
ローク検出器９により検出され、検出結果はコントロー
ラ２０に入力される。At the same time as the ring plunger 6 is lowered to start ejecting the parison 11, the stroke detector 9 detects the descending distance, that is, the parison ejection distance, and the detection result is input to the controller 20.
コントローラ２０はピンボード設定器２１により設定し
た肉厚分布に従い、サーボシリンダ３を駆動させコア位
置検出器４により検出したコア２の移動量と設定した値
とを合致せしめることによりパリソン１１の肉厚分布を
決定する。The controller 20 adjusts the wall thickness of the parison 11 by driving the servo cylinder 3 and matching the movement amount of the core 2 detected by the core position detector 4 with the set value according to the wall thickness distribution set by the pinboard setting device 21. Determine the distribution.
又コントローラ２０は射出距離１２をｎ等分した各等分
区間毎にマーキング装置１２に駆動信号１・・・・・・
ｎを発し、パリソン１１にマーキングペン１３で印点又
は印字させる。Further, the controller 20 sends a drive signal 1 to the marking device 12 for each of the n equal divisions of the injection distance 12.
n is emitted to mark or print on the parison 11 with the marking pen 13.
従ってパリソン１１上の印点等とピンボード設定器２１
の肉厚分布を応対せしめることによってパリソンの肉厚
分布を知ることが可能である。Therefore, the marks etc. on the parison 11 and the pin board setting device 21
It is possible to know the wall thickness distribution of the parison by corresponding the wall thickness distribution of the parison.
尚上記実施例では実際の成形部分１２をｎ等分し肉厚分
布を決定したが、射出距離全長りをｎ等分し肉厚分布を
決定してもよいことはいうまでもない。In the above embodiment, the actual molded portion 12 is divided into n equal parts to determine the wall thickness distribution, but it goes without saying that the entire injection distance may be divided into n equal parts to determine the wall thickness distribution.
以上述べた如く本発明によればパリソンの肉厚分布を外
観でもって知り得るので、金型との位置合せが極めて容
易となり、作業時間の短縮、コストの低減をすることが
できる。As described above, according to the present invention, the wall thickness distribution of the parison can be known from its appearance, so alignment with the mold becomes extremely easy, and working time and costs can be reduced.
図面は本発明の一実施例を示す説明図である。
１はパリソンヘッド、４はコア検出器、９はストローク
検出器、１１はパリソン、１２はマーキング装置、１９
は金型、２０はコントローラ、２１はピンボード設定器
を示す。The drawings are explanatory diagrams showing one embodiment of the present invention. 1 is a parison head, 4 is a core detector, 9 is a stroke detector, 11 is a parison, 12 is a marking device, 19
20 represents a mold, 20 represents a controller, and 21 represents a pinboard setting device.
Claims (1)
リソンを射出せしめる射出シリンダと、パリソンに刻印
するマーキング装置とを備え、前記射出シリンダの動き
に対応させ前記コア及びマーキング装置を駆動させる様
電気的に接続したことを特徴とするブロー成形機。1 Equipped with a movable core that changes the wall thickness of the injection parison, an injection cylinder that injects the parison, and a marking device that stamps on the parison, and an electric motor that drives the core and the marking device in response to the movement of the injection cylinder. A blow molding machine characterized by being connected to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54104730A JPS5812142B2 (en) | 1979-08-17 | 1979-08-17 | Blow molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54104730A JPS5812142B2 (en) | 1979-08-17 | 1979-08-17 | Blow molding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5628830A JPS5628830A (en) | 1981-03-23 |
| JPS5812142B2 true JPS5812142B2 (en) | 1983-03-07 |
Family
ID=14388607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54104730A Expired JPS5812142B2 (en) | 1979-08-17 | 1979-08-17 | Blow molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5812142B2 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59110613U (en) * | 1983-01-12 | 1984-07-26 | 株式会社日本製鋼所 | Parison marking control device |
| US5256346A (en) * | 1988-05-12 | 1993-10-26 | Harald Feuerherm | Method of extrusion blow-molding hollow thermoplastic bodies |
| US5185109A (en) * | 1991-09-12 | 1993-02-09 | Cincinnati Milacron Inc. | Extrusion blow-molding machine control |
| US5902526A (en) * | 1997-04-08 | 1999-05-11 | Ball Corporation | Method and apparatus for producing stretch blow molded articles |
| US5928581A (en) * | 1997-04-18 | 1999-07-27 | Owens-Brockway Plastics Products Inc. | Synchronization of parison profile in a plastic container molding system |
| FR2766120B1 (en) * | 1997-07-21 | 1999-10-08 | Solvay | METHOD OF MARKING AN ARTICLE PRODUCED BY EXTRUSION-BLOWING |
| DE102005037101A1 (en) | 2005-08-03 | 2007-02-08 | Krones Ag | Method and device for wall thickness control |
| DE102008013419A1 (en) | 2008-03-06 | 2009-09-10 | Khs Corpoplast Gmbh & Co. Kg | Method and apparatus for blow molding containers |
| DE102008058353B4 (en) * | 2008-11-20 | 2013-12-12 | Kautex Textron Gmbh & Co. Kg | Process for producing an extrusion blow-molded hollow body |
-
1979
- 1979-08-17 JP JP54104730A patent/JPS5812142B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5628830A (en) | 1981-03-23 |
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