JPH0322929Y2 - - Google Patents

Info

Publication number
JPH0322929Y2
JPH0322929Y2 JP1984134576U JP13457684U JPH0322929Y2 JP H0322929 Y2 JPH0322929 Y2 JP H0322929Y2 JP 1984134576 U JP1984134576 U JP 1984134576U JP 13457684 U JP13457684 U JP 13457684U JP H0322929 Y2 JPH0322929 Y2 JP H0322929Y2
Authority
JP
Japan
Prior art keywords
piezoelectric element
die
lip
presser bar
flexible lip
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
Application number
JP1984134576U
Other languages
Japanese (ja)
Other versions
JPS6151765U (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1984134576U priority Critical patent/JPH0322929Y2/ja
Publication of JPS6151765U publication Critical patent/JPS6151765U/ja
Application granted granted Critical
Publication of JPH0322929Y2 publication Critical patent/JPH0322929Y2/ja
Expired legal-status Critical Current

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
    • B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
    • B29C48/31—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets being adjustable, i.e. having adjustable exit sections
    • B29C48/313—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets being adjustable, i.e. having adjustable exit sections by positioning the die lips
    • 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
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • 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
    • B29C2948/92609—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)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Description

【考案の詳細な説明】 （産業上の利用分野） 本考案はプラスチツク成形機に応用できるダイ
リツプ調整用圧電素子に関するものである。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a piezoelectric element for die lip adjustment that can be applied to a plastic molding machine.

（従来技術） 一般にフイルム及びシートを製造するには、押
出機で溶融した樹脂を出口部に開口部をもつたダ
イにより押出し、冷却ロールで冷却し、巻取機で
巻取つて製品としている。また巻取る前に一軸延
伸、あるいは二軸延伸フイルムとすることもあ
る。また最近は製品の巾方向の厚みは、高度な精
度が要求されるようになつてきている。(Prior Art) Generally, in order to manufacture films and sheets, a resin melted in an extruder is extruded through a die having an opening at the outlet, cooled with a cooling roll, and wound up with a winder to form a product. Further, the film may be uniaxially stretched or biaxially stretched before being wound up. Recently, a high level of precision has been required for the thickness of products in the width direction.

従来の厚み調整法は、ダイ開口部（リツプ）の
隙間を作業者がボルトで調整するのが一般的であ
つた。しかし精度向上のため、ボルト調整を自動
コントロールシステムで調整する方法や、ボルト
の加熱冷却により伸縮させる方法が開発された
が、前者はボルトの遊びがあり、後者はボルトの
温度変化をさせるときダイリツプ温度も変化し、
押出される樹脂の粘度も変化してしまう。従つて
両方法とも十分目的を満足するに至つていない。 In the conventional thickness adjustment method, the gap between the die opening (lip) was generally adjusted by an operator using bolts. However, in order to improve accuracy, methods have been developed in which the bolt adjustment is adjusted using an automatic control system and a method in which the bolt is expanded and contracted by heating and cooling, but the former has play in the bolt, and the latter has die rip when changing the temperature of the bolt. The temperature also changes,
The viscosity of the extruded resin also changes. Therefore, neither method has reached the point where it fully satisfies the purpose.

（考案が解決しようとする問題点） 本考案は、従来の圧電素子をリツプ開度調節に
使用する場合、ダイの高温熱が素子に悪影響を与
える等の問題点を解決しようとするもので、圧電
素子をダイの高温熱から絶縁すること及び圧電素
子自体を冷却することにより、素子の能力を十分
に発揮させようとするものである。(Problems to be Solved by the Invention) The present invention attempts to solve problems such as the high temperature of the die having an adverse effect on the element when a conventional piezoelectric element is used to adjust the lip opening. By insulating the piezoelectric element from the high-temperature heat of the die and cooling the piezoelectric element itself, the piezoelectric element is able to fully demonstrate its capabilities.

（問題点を解決するための手段） このため本考案は、熱可塑性樹脂のフイルム及
びシートの厚みを調整するフレキリツプダイにお
いて、リツプ部片側のダイ本体に同本体における
フレキリツプに一端が当接する押え棒を遊嵌する
と共に、同押え棒の他端に一端部が当接する圧電
素子を配設し、同圧電素子を介して前記押え棒を
フレキリツプに押圧するようダイ本体にボルトを
螺合し、かつ圧電素子自体を冷却する水等の冷媒
循環式冷却装置を設けてなるもので、これを問題
点解決のための手段とするものである。(Means for Solving the Problems) Therefore, the present invention provides a flexible lip die for adjusting the thickness of thermoplastic resin films and sheets, in which a presser bar is provided on one side of the lip portion of the die body, one end of which abuts against the flexible lip of the die body. A piezoelectric element is disposed with one end abutting the other end of the presser bar, and a bolt is screwed onto the die body so as to press the presser bar against the flexible lip through the piezoelectric element. A cooling device that circulates a refrigerant such as water to cool the element itself is provided, and this is used as a means to solve the problem.

（作用） 圧電素子は冷却装置により包囲されており、同
冷却装置は水等の冷媒循環式であり、圧電素子は
ダイ本体等からの輻射熱、空気を介しての伝熱等
が防止され、圧電素子自体を冷却することによ
り、圧電素子の能力を十分に発揮させることがで
き、リツプ部の隙間の調整精度を向上させること
ができる。(Function) The piezoelectric element is surrounded by a cooling device, and the cooling device circulates a coolant such as water. By cooling the element itself, the ability of the piezoelectric element can be fully demonstrated, and the accuracy of adjusting the gap between the lip parts can be improved.

（実施例） 以下本考案の実施例を図面について説明する
と、第１図及び第２図は本考案の実施例を示し、
１はダイ本体、２は溶融樹脂の入口、３は溶融樹
脂の押出されるリツプ部、４，５，６、はダイを
一定温度に保つためのヒータ、７はフレキリツ
プ、８は圧電素子で、穴９と遊嵌している押え棒
１０を介してリツプ部３と接続されている。また
１２はボルトで、ダイ本体１と螺合しており、座
金１１を介して圧電素子８を押圧している。１３
は圧電素子の電源配線、１４は冷却装置である。(Example) An example of the present invention will be described below with reference to the drawings. FIGS. 1 and 2 show an example of the present invention,
1 is a die body, 2 is an inlet for the molten resin, 3 is a lip part from which the molten resin is extruded, 4, 5, 6 are heaters for keeping the die at a constant temperature, 7 is a flexible lip, 8 is a piezoelectric element, It is connected to the lip portion 3 via a presser rod 10 which is loosely fitted into the hole 9. A bolt 12 is screwed into the die main body 1 and presses the piezoelectric element 8 through a washer 11. 13
14 is a power supply wiring for the piezoelectric element, and 14 is a cooling device.

さて圧電素子８は、冷却装置１４により包囲さ
れており、ダイ本体１からの輻射熱、空気を介し
ての伝熱、さらに押え棒１０、座金１１からの伝
熱も防止している。第１図の冷却装置１４はジヤ
ケツト式で冷媒により常に冷却されている。圧電
素子に必要な冷却温度は、90℃以下、望ましくは
50℃以下であり、冷媒は冷却温度以上に沸点を持
つものが、冷却容器内に圧力を発生させず、かつ
使用しやすく、安全性、価格等の面からみて水が
最も適している。冷却装置としては他に、第２図
に示すように圧電素子８にパイプ１５をコイル状
に加工して取付けると共に、パイプ１５内に冷却
水を流すようにしても目的を達成できる。 Now, the piezoelectric element 8 is surrounded by a cooling device 14, which prevents radiant heat from the die body 1, heat transfer through the air, and further heat transfer from the presser bar 10 and washer 11. The cooling device 14 shown in FIG. 1 is of a jacket type and is constantly cooled by a refrigerant. The cooling temperature required for the piezoelectric element is 90℃ or less, preferably
50℃ or less, and the refrigerant has a boiling point higher than the cooling temperature, which does not generate pressure in the cooling container and is easy to use.Water is the most suitable in terms of safety, cost, etc. Alternatively, the purpose of the cooling device can be achieved by attaching a pipe 15 to the piezoelectric element 8 by processing it into a coil shape, as shown in FIG. 2, and by flowing cooling water through the pipe 15.

（考案の効果） 以上詳細に説明した如く本考案は、熱可塑性樹
脂のフイルム及びシートの厚みを調整するフレキ
リツプダイにおいて、リツプ部片側のダイ本体に
同本体におけるフレキリツプに一端が当接する押
え棒を遊嵌すると共に、同押え棒の他端に一端部
が当接する圧電素子を配設し、同圧電素子を介し
て前記押え棒をフレキリツプに押圧するようダイ
本体にボルトを螺合し、かつ圧電素子自体を冷却
する水等の冷媒循環式冷却装置を設けたので、圧
電素子をダイの本体から伝わる高温熱等から絶縁
して圧電素子自体を冷却することにより、圧電素
子の能力を十分に発揮させることができ、リツプ
部の隙間の調整精度を向上させることができる。(Effects of the Invention) As explained in detail above, the present invention provides a flexible lip die for adjusting the thickness of thermoplastic resin films and sheets, in which a presser bar is attached to the die body on one side of the lip portion, and one end of which abuts the flexible lip in the die body. At the same time, a piezoelectric element having one end abutting the other end of the presser rod is disposed, and a bolt is screwed onto the die body so as to press the presser rod against the flexible lip via the piezoelectric element, and the piezoelectric element A cooling device that circulates a refrigerant such as water to cool the piezoelectric element is installed, which insulates the piezoelectric element from high-temperature heat transmitted from the die body and cools the piezoelectric element itself, allowing the piezoelectric element to fully demonstrate its capabilities. This makes it possible to improve the adjustment accuracy of the gap between the lip portions.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の実施例を示すプラスチツク成
形用ダイの側断面図、第２図は第１図と異なる実
施例を示す圧電素子の１部切截側面図である。 図の主要部分の説明、１……ダイ本体、２……
溶融樹脂の入口、３……リツプ部、７……フレキ
リツプ、８……圧電素子、１４……冷却装置。 FIG. 1 is a side cross-sectional view of a plastic molding die showing an embodiment of the present invention, and FIG. 2 is a partially cut-away side view of a piezoelectric element showing a different embodiment from FIG. Explanation of the main parts of the diagram, 1...Die body, 2...
Molten resin inlet, 3... lip portion, 7... flexible lip, 8... piezoelectric element, 14... cooling device.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 熱可塑性樹脂のフイルム及びシートの厚みを調
整するフレキリツプダイにおいて、リツプ部片側
のダイ本体に同本体におけるフレキリツプに一端
が当接する押え棒を遊嵌すると共に、同押え棒の
他端に一端部が当接する圧電素子を配設し、同圧
電素子を介して前記押え棒をフレキリツプに押圧
するようダイ本体にボルトを螺合し、かつ圧電素
子自体を冷却する水等の冷媒循環式冷却装置を設
けたことを特徴とするダイリツプ調整用圧電素
子。 In a flexible lip die for adjusting the thickness of thermoplastic resin films and sheets, a presser bar is loosely fitted into the die body on one side of the lip part, and one end of the presser bar contacts the flexible lip of the main body, and one end of the presser bar contacts the other end of the presser bar. A piezoelectric element is disposed in contact with the piezoelectric element, a bolt is screwed onto the die body so as to press the presser bar against the flexible lip through the piezoelectric element, and a cooling device for circulating a refrigerant such as water to cool the piezoelectric element itself is provided. A piezoelectric element for die lip adjustment characterized by the following.
JP1984134576U 1984-09-06 1984-09-06 Expired JPH0322929Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1984134576U JPH0322929Y2 (en) 1984-09-06 1984-09-06

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1984134576U JPH0322929Y2 (en) 1984-09-06 1984-09-06

Publications (2)

Publication Number Publication Date
JPS6151765U JPS6151765U (en) 1986-04-07
JPH0322929Y2 true JPH0322929Y2 (en) 1991-05-20

Family

ID=30693085

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1984134576U Expired JPH0322929Y2 (en) 1984-09-06 1984-09-06

Country Status (1)

Country Link
JP (1) JPH0322929Y2 (en)

Also Published As

Publication number Publication date
JPS6151765U (en) 1986-04-07

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