JPH05286018A - Device for heating cylinder of extruder - Google Patents
Device for heating cylinder of extruderInfo
- Publication number
- JPH05286018A JPH05286018A JP4119617A JP11961792A JPH05286018A JP H05286018 A JPH05286018 A JP H05286018A JP 4119617 A JP4119617 A JP 4119617A JP 11961792 A JP11961792 A JP 11961792A JP H05286018 A JPH05286018 A JP H05286018A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- heating
- block
- induction heating
- extruder
- 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.)
- Withdrawn
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
- B29C48/275—Recovery or reuse of energy or materials
- B29C48/276—Recovery or reuse of energy or materials of energy
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
- B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
- B29B7/40—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft
- B29B7/42—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/80—Component parts, details or accessories; Auxiliary operations
- B29B7/82—Heating or cooling
- B29B7/823—Temperature control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/80—Component parts, details or accessories; Auxiliary operations
- B29B7/82—Heating or cooling
- B29B7/826—Apparatus therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はプラスチックシートの製
造等に用いられる押出機シリンダ加熱装置に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an extruder cylinder heating device used for manufacturing plastic sheets and the like.
【０００２】[0002]
【従来の技術】従来プラスチックシートの製造には、加
熱された筒状のシリンダの一端から原料を供給し、同シ
リンダ内で回転するスクリュによって原料の溶解、混練
と押出圧を発生させ、シリンダの他端からダイに導きシ
ートを製造していた。またシリンダの加熱は、電気抵抗
線を鋳込んだアルミブロックによっていた。2. Description of the Related Art Conventionally, in the production of plastic sheets, a raw material is supplied from one end of a heated cylindrical cylinder, and a screw rotating in the cylinder causes the raw material to be melted, kneaded, and extruded to generate pressure. The other end was led to a die to manufacture a sheet. In addition, the heating of the cylinder was done by an aluminum block in which an electric resistance wire was cast.
【０００３】図６は従来の押出機シリンダ加熱装置の１
例を示し、１はシリンダで、この中に図示しない回転機
構により回転するスクリュ２が挿通されている。３はシ
リンダ１の一端に設けられたホッパであり、ここにプラ
スチック原料４が供給される。５〜１０はシリンダに装
着された電気抵抗線による加熱ブロックで、アルミ合金
に鋳込んである。１１〜１６はそれぞれの加熱ブロック
５〜１０の温度を制御する制御器、ｔ1 〜ｔ6 はそれぞ
れの加熱ブロック５〜１０の温度を測定する熱電対で、
同制御器１１〜１６に接続されている。１ａはシリンダ
１の端部で、図示しないダイに接続されている。このよ
うな構成で、シリンダの一端よりホッパ３を介して供給
されたプラスチック原料４は、スクリュ２の回転によっ
てシリンダ１内を移動し、各加熱ブロックにより加熱溶
融、混練され、同シリンダ１の他端１ａより押し出され
る。シリンダは各部を分割された各加熱ブロックによっ
て加熱されるが、場所によってはプラスチック原料の発
熱作用のため冷却を必要とする部位もあり、ブロックに
は電気抵抗線を鋳込むと同時に、冷却水用の孔が設けら
れている。図７は前記ブロックをシリンダに装着した状
態を示す。３０はアルミ合金製加熱ブロック、３１及び
３２は冷却水の入口及び出口で、図示しない冷却水用孔
（通路）によって繋がっている。３３はブロック３０に
鋳込んである電気抵抗線の端子、３４はシリンダ出口で
ある。FIG. 6 shows one of conventional extruder cylinder heating devices.
An example is shown, and 1 is a cylinder in which a screw 2 which is rotated by a rotating mechanism (not shown) is inserted. Reference numeral 3 denotes a hopper provided at one end of the cylinder 1 to which the plastic raw material 4 is supplied. 5 to 10 are heating blocks formed by electric resistance wires attached to the cylinder, which are cast in an aluminum alloy. 11 to 16 are controllers for controlling the temperatures of the respective heating blocks 5 to 10, and t 1 to t 6 are thermocouples for measuring the temperatures of the respective heating blocks 5 to 10,
It is connected to the controllers 11 to 16. 1a is an end of the cylinder 1 and is connected to a die (not shown). With such a configuration, the plastic raw material 4 supplied from one end of the cylinder through the hopper 3 moves in the cylinder 1 by the rotation of the screw 2, is heated and melted and kneaded by each heating block, and the other of the cylinder 1 It is extruded from the end 1a. The cylinder is heated by each heating block divided into parts, but depending on the location, there are parts that require cooling due to the heat generation effect of the plastic raw material. Holes are provided. FIG. 7 shows a state in which the block is mounted on a cylinder. Reference numeral 30 is an aluminum alloy heating block, 31 and 32 are cooling water inlets and outlets, which are connected by cooling water holes (passages) not shown. 33 is a terminal of an electric resistance wire cast in the block 30, and 34 is a cylinder outlet.
【０００４】[0004]
【発明が解決しようとする課題】しかし前記従来の押出
機シリンダ加熱装置では、シリンダ各部を加熱するのに
電気抵抗線をアルミ合金等に鋳込んだ加熱ブロック５〜
１０によって各位置を所定の温度に加熱していた。従っ
てプラスチック原料４がシリンダ１内を移動するその位
置により、吸熱の大きい位置（溶融熱を奪われる）では
大電力を必要とする。また近年プラスチック原料に各種
の無機物或いは難溶融の添加剤を混合する場合が多くな
り、しかも処理速度を上げて生産を高める要求があり、
加熱ブロックの容量の大きな物が必要となっている。そ
こで容量を大きくするためにはブロックの温度を高くす
る必要があるが、電気抵抗線を鋳込んだ加熱ブロックで
は熱伝導でシリンダに熱を伝えるため、必要なシリンダ
温度より加熱ブロックの温度が異常に高くなり、アルミ
合金などのブロックが溶ける虞れがあった。更に押出機
の操業条件が変化した場合、熱伝導であることから応答
速度が遅い等の欠点があった。一方従来もシリンダの加
熱を誘導加熱によってシリンダ自体を直接加熱する方法
が提案されているが、シリンダは加熱のみならず、条件
によっては冷却することが必要であり、このため従来の
加熱ブロックはアルミ合金ブロックに冷却水の通路を設
けて冷却を行なっていた。しかし誘導加熱では、従来の
冷却法であるアルミ合金ブロックの上から加熱コイルを
巻回する方法では、誘導電流がアルミ合金ブロック内を
流れて、シリンダを有効に加熱できない欠点があった。
本発明は前記従来の問題を解決するために提案されたも
のである。However, in the above-mentioned conventional extruder cylinder heating device, a heating block 5 in which an electric resistance wire is cast into an aluminum alloy or the like to heat each part of the cylinder is used.
10 heated each position to a predetermined temperature. Therefore, depending on the position where the plastic raw material 4 moves inside the cylinder 1, a large amount of electric power is required at a position where heat absorption is large (melting heat is taken away). In addition, in recent years, it has been often the case that various inorganic substances or additives that are difficult to melt are mixed with plastic raw materials, and there is a demand for increasing the processing speed to increase production.
A large capacity heating block is required. Therefore, in order to increase the capacity, it is necessary to raise the temperature of the block, but in the heating block with the electric resistance wire cast, heat is transferred to the cylinder by heat conduction, so the temperature of the heating block is abnormal than the required cylinder temperature. There is a risk that the block will be melted and the aluminum alloy block will melt. Further, when the operating conditions of the extruder are changed, there is a drawback that the response speed is slow because of heat conduction. On the other hand, although a method of directly heating the cylinder itself by induction heating has been proposed in the past, the cylinder needs not only to be heated but also to be cooled depending on the conditions. A cooling water passage was provided in the alloy block for cooling. However, in induction heating, the conventional cooling method of winding a heating coil on an aluminum alloy block has a drawback that an induction current flows in the aluminum alloy block and the cylinder cannot be effectively heated.
The present invention has been proposed to solve the above conventional problems.
【０００５】[0005]
【課題を解決するための手段】このため本発明は、プラ
スチックシート製造用押出機シリンダ加熱装置におい
て、同シリンダの外面に装着した複数の加熱ブロックの
内の１個又は複数のブロックを高周波誘導加熱してなる
もので、これを課題解決のための手段とするものであ
る。また本発明は、プラスチックシート製造用押出機シ
リンダ加熱装置において、透磁率が１の金属、例えばア
ルミ及びアルミ合金、銅及び銅合金等で構成され、前記
シリンダの外周に密着して装着した冷却ブロックの外周
に、誘導加熱コイルを巻回して加熱に誘導加熱を用いる
と共に、前記冷却ブロックは軸方向に１乃至複数の絶縁
されたスリットを有してなるもので、これを課題解決の
ための手段とするものである。更に本発明は、プラスチ
ックシート製造用押出機シリンダ加熱装置において、シ
リンダの外周に密着してセラミック等の耐熱性絶縁物よ
り構成され、内部に冷却水の通じる孔を有し、かつ冷却
水出入口を設けた冷却ブロックを設けると共に、同冷却
ブロックの外周に誘導加熱コイルを巻回し加熱に誘導加
熱を用いてなるもので、これを課題解決のための手段と
するものである。Therefore, in the present invention, in an extruder cylinder heating apparatus for producing a plastic sheet, one or a plurality of heating blocks mounted on the outer surface of the cylinder is subjected to high frequency induction heating. This is a means to solve the problem. Further, the present invention relates to an extruder cylinder heating device for manufacturing a plastic sheet, which is made of a metal having a magnetic permeability of 1, for example, aluminum and aluminum alloys, copper and copper alloys, and which is mounted in close contact with the outer periphery of the cylinder. An induction heating coil is wound around the outer circumference of the coil to use induction heating for heating, and the cooling block has one or a plurality of insulated slits in the axial direction. It is what Furthermore, the present invention provides an extruder cylinder heating device for producing a plastic sheet, which is made of a heat-resistant insulating material such as ceramic, which is in close contact with the outer periphery of the cylinder, has a hole through which cooling water communicates, and has a cooling water inlet / outlet port. In addition to providing the cooling block provided, an induction heating coil is wound around the outer periphery of the cooling block and induction heating is used for heating. This is a means for solving the problem.
【０００６】[0006]
【作用】シリンダ内をスクリュの回転により、かつ加熱
ブロックにより加熱溶融、混練されて送られるプラスチ
ック原料は、スクリュの回転によって移動し、必要な加
熱を受けて押出され、ダイに注入される。従ってシリン
ダの限定された範囲に大電力を供給でき、入熱の不足が
解消できる。またシリンダが必要とする温度以上に如何
なる場所も温度が上がることはなく、しかもシリンダ自
体が直接加熱されるため、条件変化に対する応答が早
い。また冷却ブロックを設けたことにより冷却効果が高
く、冷却ブロック自体の誘導加熱を少なくできる。The plastic raw material which is melted and kneaded by the heating block in the cylinder and is melted and kneaded by the heating block is moved by the rotation of the screw, is extruded by receiving necessary heating, and is injected into the die. Therefore, a large amount of electric power can be supplied to the limited range of the cylinder, and the shortage of heat input can be resolved. Further, the temperature does not rise in any place higher than the temperature required by the cylinder, and the cylinder itself is directly heated, so that the response to the change in conditions is fast. Further, by providing the cooling block, the cooling effect is high and the induction heating of the cooling block itself can be reduced.
【０００７】[0007]
【実施例】以下本発明を図面の実施例について説明する
と、図１〜図５は本発明の実施例を示す。なお、本発明
の実施例において、図６の従来と同一の部分は同一の符
号を用いて説明することにする。先ず図１の第１実施例
について構造を説明すると、押出機シリンダ１の中をス
クリュ２が貫通しており、スクリュ２は図示しない回転
機構によって回転するようになっている。またシリンダ
１の一端にはプラスチック原料４が供給されるホッパ３
が取付けられている。５〜８は従来の電気抵抗線を用い
た加熱ブロック、１１〜１４はそれらの電源及び温度制
御器である。１７，１８はシリンダ１に巻回した誘導加
熱用コイル、１９，２０はその電源である。また１ａは
シリンダ１の他端で、溶融プラスチックの出口であり、
図示しないダイに接続されている。なお、誘導加熱用電
源１９，２０は低周波数（商用周波数）でもよいが、シ
リンダの寸法、形状を考慮し、コイル装着の容易さ、電
源の軽量化などから数ｋＨｚの高周波を用いるのが有利
と思われる。またｔ1〜ｔ6 は各加熱ブロックの温度を
測定する熱電対であり、それぞれの電源に接続してあ
る。このような構成の押出機で、シリンダ１の一端に設
けられたホッパ３に供給されたプラスチック原料４は、
スクリュ２の回転によって移動し、必要な加熱を受けて
押出され、他端１ａから図示しないダイへと導かれる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments of the drawings. FIGS. 1 to 5 show the embodiments of the present invention. In the embodiment of the present invention, the same parts as those in the conventional case of FIG. 6 will be described using the same reference numerals. First, the structure of the first embodiment shown in FIG. 1 will be described. A screw 2 penetrates the extruder cylinder 1, and the screw 2 is rotated by a rotation mechanism (not shown). Further, a hopper 3 to which a plastic raw material 4 is supplied at one end of the cylinder 1.
Is installed. 5 to 8 are heating blocks using conventional electric resistance wires, and 11 to 14 are their power sources and temperature controllers. Reference numerals 17 and 18 are induction heating coils wound around the cylinder 1, and 19 and 20 are power supplies thereof. 1a is the other end of the cylinder 1, which is an outlet for molten plastic,
It is connected to a die not shown. The induction heating power sources 19 and 20 may have a low frequency (commercial frequency), but considering the size and shape of the cylinder, it is advantageous to use a high frequency of several kHz in order to facilitate coil mounting and reduce the weight of the power source. I think that the. The t 1 ~t 6 is a thermocouple for measuring the temperature of each heating block is connected to the respective power supply. In the extruder having such a configuration, the plastic raw material 4 supplied to the hopper 3 provided at one end of the cylinder 1 is
The screw 2 is moved by the rotation of the screw 2, is extruded by receiving necessary heating, and is guided from the other end 1a to a die (not shown).
【０００８】次に図２は本発明の第２実施例を示すシリ
ンダに装着する冷却ブロックの１つを示すもので、図３
及び図４は同冷却ブロックの詳細構造を示す。図におい
て１はシリンダ、２はシリンダ１の中を貫通しているス
クリュである。２１は冷却ブロックであり、シリンダ１
の外面に密着して取付けられ、その材質は透磁率１のア
ルミ及びアルミ合金、或いは銅及び銅合金で構成されて
おり、この実施例では２個に分割してある。２２はブロ
ック２１の内部に作られた冷却水用の孔（通路）、２
３，２４は同孔２２に連通している冷却水の入口及び出
口である。また２５は２つ割にした冷却ブロック２１の
間に挿入したスペーサであり、耐熱性絶縁物で構成され
ている。２６は冷却ブロック２１のシリンダ１に接する
内面に溶射等でコーティングされた絶縁コーティングで
あるが、必要に応じて施工するものである。２７は冷却
ブロック２１の外側に巻回した誘導加熱コイルである。
さて図２において、シリンダ１内をスクリュ２の回転に
より、かつ加熱ブロックにより加熱溶融、混練されて送
られるプラスチック原料は冷却ブロック２１により冷却
され、加熱ブロックの温度が異常に高くなるのを防ぐこ
とができるが、冷却ブロック２１は透磁率１のアルミ及
びアルミ合金、或いは銅及び銅合金で構成されているた
め、冷却ブロック２１自体の誘導加熱を少なくすること
ができる。Next, FIG. 2 shows one of the cooling blocks mounted on the cylinder showing the second embodiment of the present invention.
FIG. 4 shows a detailed structure of the cooling block. In the figure, 1 is a cylinder, and 2 is a screw penetrating through the cylinder 1. 21 is a cooling block, which is a cylinder 1
It is attached in close contact with the outer surface of and is made of aluminum and aluminum alloy having a magnetic permeability of 1, or copper and copper alloy, and is divided into two in this embodiment. 22 is a hole (passage) for cooling water formed inside the block 21;
Reference numerals 3 and 24 are an inlet and an outlet of cooling water communicating with the hole 22. Further, 25 is a spacer inserted between the cooling blocks 21 which are divided into two, and is composed of a heat resistant insulator. Reference numeral 26 is an insulating coating which is coated on the inner surface of the cooling block 21 in contact with the cylinder 1 by thermal spraying or the like, and is applied as needed. Reference numeral 27 is an induction heating coil wound around the outside of the cooling block 21.
Now, referring to FIG. 2, the plastic raw material sent by being heated and melted and kneaded by the heating block in the cylinder 1 by the rotation of the screw 2 is cooled by the cooling block 21 to prevent the temperature of the heating block from becoming abnormally high. However, since the cooling block 21 is made of aluminum and an aluminum alloy having a magnetic permeability of 1 or copper and a copper alloy, it is possible to reduce the induction heating of the cooling block 21 itself.
【０００９】次に図５は本発明の第３実施例を示すシリ
ンダに装着する冷却ブロック２８を示すもので、同冷却
ブロック２８はセラミック等の耐熱性絶縁物で構成され
ており、シリンダ１の外面に密着して取付けられてい
る。なお、この実施例では２個に分割してあるが、操作
性によっては複数個に分割してもよい。また２２は冷却
水用の孔、２３，２４は冷却水の入口及び出口である。
この実施例におけるセラミック等の耐熱性絶縁物で構成
された冷却ブロック２８も、冷却ブロック自体の誘導加
熱を少なくすることができる。Next, FIG. 5 shows a cooling block 28 to be mounted on a cylinder showing a third embodiment of the present invention. The cooling block 28 is made of a heat resistant insulating material such as ceramic, and It is attached closely to the outer surface. In this embodiment, it is divided into two pieces, but it may be divided into a plurality of pieces depending on the operability. Further, 22 is a hole for cooling water, and 23 and 24 are inlets and outlets of cooling water.
The cooling block 28 made of a heat-resistant insulating material such as ceramic in this embodiment can also reduce the induction heating of the cooling block itself.
【００１０】[0010]
【発明の効果】以上詳細に説明した如く本発明は構成さ
れているので、シリンダの限定された範囲に大電力を供
給でき、入熱の不足が解消できると共に、シリンダの必
要とする温度以上に如何なる場所も温度が上がることは
ない。またシリンダ自体が直接加熱されるため、条件変
化に対する応答が早く、かつシリンダを保温しこの上か
ら加熱コイルを巻くため、放熱がなく効率が高い。また
本発明は誘導加熱を用いたため、シリンダを直接加熱す
ることができ、効率よく入熱を投入することができる。
更にシリンダに密着して冷却ブロックを配置し、同冷却
ブロックの外周に誘導加熱コイルを巻回したため冷却効
率を高めることができる。また冷却ブロックに透磁率１
の金属、例えばアルミ及びアルミ合金、銅及び銅合金、
或いはセラミック等の耐熱性絶縁物を用いたため、冷却
ブロック自体の誘導加熱を少なくすることができる。ま
た透磁率１の金属を用いる場合、冷却ブロックを軸方向
に分割してブロック間に耐熱性絶縁物を介設したので、
誘導加熱に際してショートリングとならず、冷却ブロッ
クが誘導加熱の妨害になるのを防ぐことができる。Since the present invention is constructed as described in detail above, a large amount of electric power can be supplied to a limited range of the cylinder, shortage of heat input can be eliminated, and a temperature higher than that required by the cylinder can be achieved. The temperature never rises in any place. Further, since the cylinder itself is directly heated, the response to a change in conditions is fast, and since the cylinder is kept warm and the heating coil is wound on the cylinder, heat is not radiated and efficiency is high. Further, since the present invention uses induction heating, the cylinder can be directly heated, and heat input can be efficiently input.
Further, since the cooling block is arranged in close contact with the cylinder and the induction heating coil is wound around the outer periphery of the cooling block, the cooling efficiency can be improved. The permeability of the cooling block is 1
Metals such as aluminum and aluminum alloys, copper and copper alloys,
Alternatively, since a heat resistant insulator such as ceramic is used, it is possible to reduce the induction heating of the cooling block itself. When a metal having a magnetic permeability of 1 is used, the cooling block is divided in the axial direction and the heat-resistant insulator is interposed between the blocks.
It does not become a short ring during induction heating, and can prevent the cooling block from interfering with induction heating.
【図１】本発明の第１実施例を示す押出機シリンダ加熱
装置の１部切截斜視図である。FIG. 1 is a partial cutaway perspective view of an extruder cylinder heating device showing a first embodiment of the present invention.
【図２】本発明の第２実施例を示す押出機シリンダに装
着する冷却ブロックの１個のみ示す斜視図である。FIG. 2 is a perspective view showing only one cooling block mounted on an extruder cylinder showing a second embodiment of the present invention.
【図３】図２の冷却ブロックの分割された半分を示す斜
視図である。FIG. 3 is a perspective view showing a divided half of the cooling block of FIG.
【図４】図２の冷却ブロックの側面図である。FIG. 4 is a side view of the cooling block of FIG.
【図５】本発明の第３実施例を示す押出機シリンダに装
着する冷却ブロックの側面図である。FIG. 5 is a side view of a cooling block mounted on an extruder cylinder showing a third embodiment of the present invention.
【図６】従来の押出機シリンダ加熱装置の１部切截斜視
図である。FIG. 6 is a partially cutaway perspective view of a conventional extruder cylinder heating device.
【図７】従来の図６と異なる加熱ブロックの１例を示す
斜視図である。FIG. 7 is a perspective view showing an example of a heating block different from the conventional one shown in FIG.
１ 押出機シリンダ ２ スクリュ ３ ホッパ ４ プラスチック原料 ５〜８ 加熱ブロック １１〜１４ 制御器 １７，１８ 誘導加熱コイル １９，２０ 誘導加熱用電源 ２１ シリンダの他端 ２２ 孔 ２３ 冷却水入口 ２４ 冷却水出口 ２５ スペーサ ２６ 絶縁コーティング ２７ 誘導加熱コイル 1 Extruder Cylinder 2 Screw 3 Hopper 4 Plastic Raw Material 5-8 Heating Block 11-14 Controller 17,18 Induction Heating Coil 19,20 Induction Heating Power Supply 21 Cylinder's Other End 22 Hole 23 Cooling Water Inlet 24 Cooling Water Outlet 25 Spacer 26 Insulation coating 27 Induction heating coil
───────────────────────────────────────────────────── フロントページの続き (72)発明者 毛利 良治 名古屋市中村区岩塚町字高道１番地 三菱 重工業株式会社名古屋研究所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ryoji Mohri 1 Takamichi, Iwazuka-cho, Nakamura-ku, Nagoya City Mitsubishi Heavy Industries, Ltd. Nagoya Research Laboratory
Claims (3)
ダ加熱装置において、同シリンダの外面に装着した複数
の加熱ブロックの内の１個又は複数のブロックを高周波
誘導加熱したことを特徴とする押出機シリンダ加熱装
置。1. An extruder cylinder heating apparatus for producing a plastic sheet, characterized in that one or a plurality of heating blocks mounted on an outer surface of the cylinder is subjected to high frequency induction heating. apparatus.
ダ加熱装置において、透磁率が１の金属、例えばアルミ
及びアルミ合金、銅及び銅合金等で構成され、前記シリ
ンダの外周に密着して装着した冷却ブロックの外周に、
誘導加熱コイルを巻回して加熱に誘導加熱を用いると共
に、前記冷却ブロックは軸方向に１乃至複数の絶縁され
たスリットを有することを特徴とする押出機シリンダ加
熱装置。2. A cooling block which is made of a metal having a magnetic permeability of 1, for example, aluminum and aluminum alloys, copper and copper alloys, and which is closely attached to the outer circumference of the cylinder in an extruder cylinder heating device for producing plastic sheets. On the outer periphery of
An extruder cylinder heating apparatus, wherein an induction heating coil is wound to use induction heating for heating, and the cooling block has one or a plurality of insulated slits in an axial direction.
ダ加熱装置において、シリンダの外周に密着してセラミ
ック等の耐熱性絶縁物より構成され、内部に冷却水の通
じる孔を有し、かつ冷却水出入口を設けた冷却ブロック
を設けると共に、同冷却ブロックの外周に誘導加熱コイ
ルを巻回し加熱に誘導加熱を用いてなることを特徴とす
る押出機シリンダ加熱装置。3. An extruder cylinder heating device for producing a plastic sheet, which is made of a heat-resistant insulating material such as ceramics and is in close contact with the outer periphery of the cylinder, has a hole through which cooling water communicates, and has a cooling water inlet / outlet port. An extruder cylinder heating device, characterized in that an induction heating coil is wound around the outer periphery of the cooling block and induction heating is used for heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4119617A JPH05286018A (en) | 1992-04-14 | 1992-04-14 | Device for heating cylinder of extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4119617A JPH05286018A (en) | 1992-04-14 | 1992-04-14 | Device for heating cylinder of extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05286018A true JPH05286018A (en) | 1993-11-02 |
Family
ID=14765864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4119617A Withdrawn JPH05286018A (en) | 1992-04-14 | 1992-04-14 | Device for heating cylinder of extruder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05286018A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06335954A (en) * | 1993-05-27 | 1994-12-06 | Mitsuba Seisakusho:Kk | Heating and cooling device of screw cylinder |
| KR20020089072A (en) * | 2001-05-23 | 2002-11-29 | 이정 | Cooling device for cylinder of extruding machine and temperature control apparatus for a cylinder of extruding using the cooling device |
| KR20030042895A (en) * | 2001-11-26 | 2003-06-02 | 우방공업 주식회사 | Cooler for extruder |
| WO2005046962A1 (en) * | 2003-11-14 | 2005-05-26 | Sumitomo Heavy Industries, Ltd. | Injection device and method of heating injection device |
| KR100508909B1 (en) * | 2001-05-23 | 2005-09-14 | 주식회사 아산케미칼 | Method for Preparing Pellet-Type Foams Of Non-crosslinked Polypropylene Resin Having Lower Melting Point |
| EP1702741A1 (en) * | 2004-01-07 | 2006-09-20 | Sumitomo Heavy Industries, Ltd. | Forming machine and its temperature controlling method |
| US8007709B2 (en) | 2007-08-27 | 2011-08-30 | Xaloy, Incorporated | Synchronized temperature contol of plastic processing equipment |
| KR101132440B1 (en) * | 2011-07-21 | 2012-04-24 | 김상직 | Heating apparatus for cylinder using high frequency induction heating and manufacturing method therefor |
| KR101453187B1 (en) * | 2013-01-07 | 2014-10-22 | 주상규 | Heating apparatus for cylinder using high frequency induction heating |
| CN107244056A (en) * | 2017-08-16 | 2017-10-13 | 成都米特瑞新材料科技有限公司 | Beneficial to the extrusion mechanism uniformly heated |
| CN107599351A (en) * | 2017-09-30 | 2018-01-19 | 佛山市飞月电热科技有限公司 | A kind of electric heating coil with heat sinking function for extruder |
-
1992
- 1992-04-14 JP JP4119617A patent/JPH05286018A/en not_active Withdrawn
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06335954A (en) * | 1993-05-27 | 1994-12-06 | Mitsuba Seisakusho:Kk | Heating and cooling device of screw cylinder |
| KR20020089072A (en) * | 2001-05-23 | 2002-11-29 | 이정 | Cooling device for cylinder of extruding machine and temperature control apparatus for a cylinder of extruding using the cooling device |
| KR100508909B1 (en) * | 2001-05-23 | 2005-09-14 | 주식회사 아산케미칼 | Method for Preparing Pellet-Type Foams Of Non-crosslinked Polypropylene Resin Having Lower Melting Point |
| KR20030042895A (en) * | 2001-11-26 | 2003-06-02 | 우방공업 주식회사 | Cooler for extruder |
| WO2005046962A1 (en) * | 2003-11-14 | 2005-05-26 | Sumitomo Heavy Industries, Ltd. | Injection device and method of heating injection device |
| EP1702741A1 (en) * | 2004-01-07 | 2006-09-20 | Sumitomo Heavy Industries, Ltd. | Forming machine and its temperature controlling method |
| EP1702741A4 (en) * | 2004-01-07 | 2009-11-25 | Sumitomo Heavy Industries | Forming machine and its temperature controlling method |
| US8007709B2 (en) | 2007-08-27 | 2011-08-30 | Xaloy, Incorporated | Synchronized temperature contol of plastic processing equipment |
| KR101132440B1 (en) * | 2011-07-21 | 2012-04-24 | 김상직 | Heating apparatus for cylinder using high frequency induction heating and manufacturing method therefor |
| KR101453187B1 (en) * | 2013-01-07 | 2014-10-22 | 주상규 | Heating apparatus for cylinder using high frequency induction heating |
| CN107244056A (en) * | 2017-08-16 | 2017-10-13 | 成都米特瑞新材料科技有限公司 | Beneficial to the extrusion mechanism uniformly heated |
| CN107599351A (en) * | 2017-09-30 | 2018-01-19 | 佛山市飞月电热科技有限公司 | A kind of electric heating coil with heat sinking function for extruder |
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