JP4294844B2 - Raw material supply method - Google Patents

Raw material supply method Download PDF

Info

Publication number
JP4294844B2
JP4294844B2 JP2000296389A JP2000296389A JP4294844B2 JP 4294844 B2 JP4294844 B2 JP 4294844B2 JP 2000296389 A JP2000296389 A JP 2000296389A JP 2000296389 A JP2000296389 A JP 2000296389A JP 4294844 B2 JP4294844 B2 JP 4294844B2
Authority
JP
Japan
Prior art keywords
amount
supply
raw material
increase
feeder
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
Application number
JP2000296389A
Other languages
Japanese (ja)
Other versions
JP2002103426A (en
Inventor
浩平 三浦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Japan Steel Works Ltd
Original Assignee
Japan Steel Works Ltd
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 by Japan Steel Works Ltd filed Critical Japan Steel Works Ltd
Priority to JP2000296389A priority Critical patent/JP4294844B2/en
Publication of JP2002103426A publication Critical patent/JP2002103426A/en
Application granted granted Critical
Publication of JP4294844B2 publication Critical patent/JP4294844B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B29C48/92—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
    • B29C2948/9258—Velocity
    • B29C2948/926—Flow or feed rate
    • 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
    • B29C2948/92828—Raw material handling or dosing, e.g. active hopper or feeding device
    • 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
    • B29C2948/92866—Inlet shaft or slot, e.g. passive hopper; Injector, e.g. injector nozzle on barrel

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、原料供給方法に関し、特に、フィーダへの供給量変化を行う場合に、安全にフィーダの押出量を増大するための新規な改良に関する。
【０００２】
【従来の技術】
従来、粉末状或いは粒体状のプラスチックの原料を、混練押出装置に供給する場合、図２の構成が採用されている。
すなわち、図２において、スクリュ式混練押出機１０は、原料を供給するためのフィーダ１、長尺筒形状のバレル２、このバレル２内に回転可能に内挿されたスクリュ３およびこのスクリュ３を回転駆動する駆動装置４により構成されている。さらに、前記バレル２には、周囲にヒータ５が設けられ、先端端面にはダイス６が組付けられている。前記フィーダ１には、表示部１１を有すると共に前記フィーダ１を制御するための制御器１２が接続され、この制御器１２にはこの制御器１２にデーを入力するためのテンキー１３が接続されている。
なお、前述のフィーダ１、制御器１２及びテンキー１３とにより原料供給装置２０が構成されている。
【０００３】
次に、動作について説明する。まず、スクリュ式混練押出機１０の運転開始に先立ち、原料の供給量指令値ＱＳをテンキー１３から入力し、制御器１２の表示部１１に供給量指令値ＱＳが表示される。その後、駆動装置４を起動してスクリュ３を回転駆動すると共にフィーダ１を起動し、フィーダ１のホッパ１ａに貯留された原料Ｍをバレル２内へ供給量指令値ＱＳで定量供給する。このバレル２に供給された原料Ｍは、バレル２による加熱とスクリュ３の回転とにより溶融混練され、バレル２の先端のダイス６から製品として押出される。
【０００４】
このような状態で定常運転され、連続的に製品を製造しているスクリュ式混練押出機１０において、製造計画値を変更するために、スクリュ３の回転数を変更せず供給量指令値をＱＳから供給変化量ＱＳ'へ変更する場合、この供給変化量ＱＳ'をテンキー１３から入力する。この入力により表示部１１の設定値がＱＳ'に変更され、設定値の変更と同時にフィーダ１からスクリュ式混練押出機１０へ供給される原料Ｍの供給量が変化する。その後、スクリュ式混練押出機１０は、スクリュ３の回転数を変更すること無く、原料Ｍの供給量変化を受け入れ、運転が継続される。
【０００５】
【発明が解決しようとする課題】
従来の原料供給方法は、以上のように構成されていたため、次のような課題が存在していた。すなわち、原料の供給量を増加させる場合、スクリュ式混練押出機には混練処理能力に大きい許容幅があるが、供給量が一時に大きく増加する場合は、その変化量が許容幅以内であっても運転に支障を来すことがある。すなわち、フィードネック現象が発生し、過負荷状態となり、駆動装置が過負荷により停止することがある。
例えば、操作者がテンキーへ入力する数値を誤入力し、バレル内へ供給される原料が一時的に大きく増加し、運転に支障を来すことがある。従って、定常運転状態から製造量を増大する場合は、駆動装置の負荷状態を監視しながら、過負荷状態にならないように、供給量の設定値を段階的に複数回に分割して入力することが必要になる。そのため、操作者に対して作業負担が著しく増大し、作業ミスが発生しやすく、生産効率が低下することになっていた。
【０００６】
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あり、特に、原料の供給量を増加させる場合、安全にフィーダの押出量を増大できる量である安全増加量を設定し、この安全増加量を越える供給量増加設定がフィーダに与えられることがないようにした原料供給方法を提供することを目的とする。
【０００７】
【課題を解決するための手段】
本発明による原料供給方法は、スクリュ式混練押出機に原料を供給するためのフィーダと、表示部を有し前記フィーダを制御するための制御器と、前記制御器に接続されると共に前記原料の供給量指令値と安全増加量の入力を受け付けるテンキーとにより構成される原料供給装置を用い、前記供給量指令値が供給変化量に変更された場合、前記制御器は、前記供給変化量−供給量指令値≦安全増加量の時に、供給変化量＝供給量指令値とし、前記供給変化量−供給量指令値＞安全増加量の時に供給変化量＝供給量指令値＋安全増加量とし、前記安全増加量は、前記スクリュ式混錬押出機において一時的に供給原料を増量する場合、安全に前記フィーダの押出量を増大させることができる供給増加量である予め定められた量であり、前記安全増加量を越える供給量増加設定が前記フィーダに与えられないように制御する方法である。
【０００８】
【発明の実施の形態】
以下、図面と共に本発明による原料供給方法の好適な実施の形態について説明する。図１は本発明による混練押出装置の原料供給装置を示す構成図であり、図２は本発明方法に適用する原料供給装置を示す構成図である。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。
【０００９】
図１において、符号１０で示されるものはスクリュ式混練押出機であり、前記スクリュ式混練押出機１０は、バレル２、このバレル２内に回転可能に内挿されたスクリュ３およびこのスクリュ３を回転駆動するための駆動装置４により構成されている。さらに、前記バレル２には、周囲にヒータ５が設けられ、先端端面にはダイス６が組付けられている。前記スクリュ式混練押出機１０に接続されホッパ１ａを有するフィーダ１には、表示部１１を有し前記フィーダ１を制御する制御器１２が接続され、この制御器１２にはデーを入力するためのテンキー１３が接続されている。
なお、前述のフィーダ１、制御器１２及びテンキー１３により原料供給装置２０が構成されている。
【００１０】
次に、動作について説明する。まず、供給量指令値ＱＳをテンキー１３から入力し、制御器１２の表示部１１に供給量指令値ＱＳを設定し、このＱＳの数値が表示部１１に表示される。さらに、前記スクリュ式混練押出機１０において、一時的に原料を増量する場合、安全にフィーダ１の押出量を増大させることができる供給量増加量である予め定められた安全増加量ＱＬをテンキー１３から入力し、制御器１２の表示部１１に安全増加量ＱＬを設定・表示する。
【００１１】
次に、実際に原料Ｍを混練押出しする場合、駆動装置４を起動してスクリュ３を回転駆動し、フィーダ１を起動してホッパ１ａに貯留された原料Ｍをバレル２の上流部へ供給量指令値ＱＳで定量供給する。このバレル２に供給された原料Ｍは、バレル２による加熱とスクリュ３の回転とにより溶融混練され、ダイス６から製品として押出される。
【００１２】
前述のような状態で定常運転され、連続的に製品を製造している場合に、スクリュ３の回転数を変更することなく原料供給量を供給変化量ＱＳ'へ変更する場合、この供給変化量ＱＳ'をテンキー１３から制御器１２へ入力する。この入力により表示部１１の設定値がＱＳ'に変更され、新たに設定された供給変化量ＱＳ'に対し、前述の安全増加量ＱＬとの比較が行われ、以下のように供給量増加が行われる。
（１）ＱＳ'−ＱＳ≦ＱＬの場合、図３のように、ＱＳ'＝ＱＳとして
供給変化量ＱＳ'により原料が供給される。
（２）ＱＳ'−ＱＳ＞ＱＬの場合、図４のように、ＱＳ'＝ＱＳ＋ＱＬとして
設定値の変更時点Ｔ０において、まず（ＱＳ＋ＱＬ）に増加された原料が供給され、所定時間経過後のＴ１においてＱＳ'に増加供給される。なお、Ｔ１−Ｔ０は、原料の増加供給後にスクリュ式混練押出機１０の運転状態が定常化するまでの時間である。
従って、前記安全増加量ＱＬを越える供給量増加設定が前記フィーダ１に与えられないように制御される。
【００１３】
【発明の効果】
本発明による原料供給方法は、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、原料供給装置の制御器に安全増加量ＱＬを設定することができるようにし、この安全増加量に対して供給変化量を比較して原料供給装置の供給量を調整するため、供給量が一時的に急激に増加することが無く、その結果、スクリュ式混練押出機にフィードネック現象が発生せず、過負荷状態とならず、駆動装置は過負荷により停止することが無くなった。また、操作者がテンキーへ大きい数値をミス入力しても、バレル内へ供給される原料が一時に大きく増加したり、運転に支障を来したりすることが無くなった。従って、原料の供給量を増加させる場合、予め安全増加量ＱＬの初期設定の操作を行うことのみにより、安全増加量ＱＬを越える供給量増加設定がフィーダに与えられることはなく、その後の運転状態の変化を操作者が常時監視する必要が無くなった。
【図面の簡単な説明】
【図１】 本発明による方法に適用する混練押出装置の原料供給装置を示す構成図である。
【図２】 従来の混練押出装置の原料供給装置を示す構成図である。
【図３】 本発明による原料の供給制御状態を示す特性図である。
【図４】 本発明による原料の供給制御状態を示す特性図である。
【符号の説明】
１ フィーダ
２ バレル
３ スクリュ
４ 駆動装置
５ ヒータ
６ ダイス
ＱＳ 供給量指令値
ＱＳ' 供給変化量
ＱＬ 安全増加量
１０ スクリュ式混練押出機
１１ 表示部
１２ 制御器
１３ テンキー
２０ 原料供給装置[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a raw material supply method, and more particularly to a novel improvement for safely increasing the amount of feeder extrusion when changing the amount of supply to a feeder.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, when a powdery or granular plastic raw material is supplied to a kneading extrusion apparatus, the configuration shown in FIG. 2 is adopted.
That is, in FIG. 2, a screw-type kneading extruder 10 includes a feeder 1 for supplying raw materials, a long cylindrical barrel 2, a screw 3 rotatably inserted in the barrel 2, and the screw 3. It is comprised by the drive device 4 which rotationally drives. Furthermore, the barrel 2 is provided with a heater 5 around it, and a die 6 is assembled on the end face of the tip. The feeder 1 has a display 11 and is connected to a controller 12 for controlling the feeder 1, and the controller 12 is connected to a numeric keypad 13 for inputting data to the controller 12. Yes.
The above-described feeder 1, controller 12, and numeric keypad 13 constitute a raw material supply device 20.
[0003]
Next, the operation will be described. First, prior to the start of operation of the screw-type kneading extruder 10, the raw material supply amount command value QS is input from the numeric keypad 13, and the supply amount command value QS is displayed on the display unit 11 of the controller 12. Thereafter, the drive device 4 is activated to rotate the screw 3 and the feeder 1 is activated, and the raw material M stored in the hopper 1a of the feeder 1 is quantitatively supplied into the barrel 2 at the supply amount command value QS. The raw material M supplied to the barrel 2 is melted and kneaded by heating by the barrel 2 and rotation of the screw 3 and is extruded as a product from the die 6 at the tip of the barrel 2.
[0004]
In the screw-type kneading and extruding machine 10 that is steadily operated in such a state and continuously producing products, in order to change the production plan value, the supply amount command value is set to QS without changing the rotation speed of the screw 3. Is changed from the numeric keypad 13 to the supply change amount QS ′. By this input, the set value of the display unit 11 is changed to QS ′, and simultaneously with the change of the set value, the supply amount of the raw material M supplied from the feeder 1 to the screw kneading extruder 10 is changed. Thereafter, the screw-type kneading extruder 10 accepts a change in the supply amount of the raw material M without changing the number of rotations of the screw 3, and the operation is continued.
[0005]
[Problems to be solved by the invention]
Since the conventional raw material supply method is configured as described above, the following problems exist. That is, when increasing the supply amount of the raw material, the screw-type kneading extruder has a large allowable range in kneading processing capacity, but when the supply amount increases greatly at one time, the amount of change is within the allowable range. May interfere with driving. That is, a feed neck phenomenon occurs, an overload state occurs, and the drive device may stop due to an overload.
For example, an operator may erroneously input a numerical value input to the numeric keypad, and the raw material supplied into the barrel may be greatly increased temporarily, thereby hindering operation. Therefore, when increasing the production amount from the steady operation state, monitor the load state of the drive device and input the supply amount set value in multiple steps step by step so as not to overload. Is required. For this reason, the work load on the operator is remarkably increased, work mistakes are likely to occur, and production efficiency is reduced.
[0006]
The present invention has been made to solve the above-described problems, and in particular, when increasing the supply amount of the raw material, a safety increase amount that can safely increase the extrusion amount of the feeder is set, An object of the present invention is to provide a raw material supply method that prevents a feeder from being supplied with a supply amount increase setting exceeding the safe increase amount.
[0007]
[Means for Solving the Problems]
The raw material supply method according to the present invention includes a feeder for supplying a raw material to a screw-type kneading extruder, a controller having a display unit for controlling the feeder, connected to the controller, and When the supply amount command value is changed to the supply change amount using the raw material supply device configured by the supply amount command value and the numeric keypad that receives the input of the safety increase amount, the controller changes the supply change amount−supply. When the amount command value ≦ safe increase amount, supply change amount = supply amount command value, and when supply change amount−supply amount command value> safe increase amount, supply change amount = supply amount command value + safe increase amount , The safety increase amount is a predetermined amount that is a supply increase amount that can safely increase the extrusion amount of the feeder when the feed material is temporarily increased in the screw-type kneading extruder. Increased safety Supply amount increase setting exceeding amount is a method of controlling so as not given to the feeder.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of a raw material supply method according to the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a raw material supply device of a kneading and extruding apparatus according to the present invention, and FIG. 2 is a block diagram showing a raw material supply device applied to the method of the present invention. Note that the same or equivalent parts as those in the conventional example will be described using the same reference numerals.
[0009]
In FIG. 1, reference numeral 10 denotes a screw-type kneading extruder. The screw-type kneading extruder 10 includes a barrel 2, a screw 3 rotatably inserted in the barrel 2, and the screw 3. It is comprised by the drive device 4 for rotationally driving. Furthermore, the barrel 2 is provided with a heater 5 around it, and a die 6 is assembled on the end face of the tip. A feeder 1 connected to the screw type kneading extruder 10 and having a hopper 1a is connected to a controller 12 having a display unit 11 and controlling the feeder 1, and the controller 12 is used for inputting data. A numeric keypad 13 is connected.
The above-described feeder 1, controller 12, and numeric keypad 13 constitute a raw material supply device 20.
[0010]
Next, the operation will be described. First, the supply amount command value QS is input from the numeric keypad 13, the supply amount command value QS is set on the display unit 11 of the controller 12, and the numerical value of this QS is displayed on the display unit 11. Further, in the screw-type kneading and extruding machine 10, when the amount of the raw material is temporarily increased, a predetermined safety increase amount QL, which is a supply amount increase amount that can safely increase the extrusion amount of the feeder 1, is set to the numeric keypad 13. The safety increase amount QL is set and displayed on the display unit 11 of the controller 12.
[0011]
Next, when the raw material M is actually kneaded and extruded, the drive device 4 is activated to rotate the screw 3, and the feeder 1 is activated to supply the raw material M stored in the hopper 1a to the upstream portion of the barrel 2. A fixed amount is supplied with the command value QS. The raw material M supplied to the barrel 2 is melted and kneaded by heating by the barrel 2 and rotation of the screw 3 and is extruded from the die 6 as a product.
[0012]
When the product is continuously operated in the state as described above and products are continuously manufactured, the supply change amount is changed when the raw material supply amount is changed to the supply change amount QS ′ without changing the rotational speed of the screw 3. QS ′ is input from the numeric keypad 13 to the controller 12. By this input, the set value of the display unit 11 is changed to QS ′, and the newly set supply change amount QS ′ is compared with the above-described safety increase amount QL, and the increase in supply amount is as follows. Done.
(1) In the case of QS′−QS ≦ QL, as shown in FIG. 3, the raw material is supplied with the supply change amount QS ′ as QS ′ = QS.
(2) In the case of QS′−QS> QL, as shown in FIG. 4, at the time T0 when the set value is changed as QS ′ = QS + QL, first, the raw material increased to (QS + QL) is supplied, and T1 after a predetermined time has elapsed. Is supplied to QS ′. In addition , T1-T0 is time until the operation state of the screw-type kneading extruder 10 becomes steady after increasing supply of raw materials.
Therefore, control is performed so that the supply amount increase setting exceeding the safe increase amount QL is not given to the feeder 1.
[0013]
【The invention's effect】
Since the raw material supply method according to the present invention is configured as described above, the following effects can be obtained. That is, the safety increase amount QL can be set in the controller of the raw material supply device, and the supply amount of the raw material supply device is adjusted by comparing the supply change amount with the safety increase amount. As a result, the screw type kneading extruder does not cause a feed neck phenomenon, an overload state does not occur, and the drive unit does not stop due to an overload. Moreover, even if the operator mistakenly inputs a large numerical value to the numeric keypad, the raw material supplied into the barrel does not increase greatly at any one time, or the operation is not hindered. Therefore, when the supply amount of the raw material is increased, only the initial setting operation of the safety increase amount QL is performed in advance, so that the supply amount increase setting exceeding the safety increase amount QL is not given to the feeder, and the subsequent operation state It is no longer necessary for the operator to constantly monitor changes.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing a raw material supply device of a kneading extrusion device applied to a method according to the present invention.
FIG. 2 is a configuration diagram showing a raw material supply device of a conventional kneading extrusion device.
FIG. 3 is a characteristic diagram showing a supply control state of raw materials according to the present invention.
FIG. 4 is a characteristic diagram showing a supply control state of raw materials according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Feeder 2 Barrel 3 Screw 4 Drive device 5 Heater 6 Dies QS Supply amount command value QS 'Supply change amount QL Safety increase amount 10 Screw type kneading extruder 11 Display part 12 Controller 13 Numeric keypad 20 Raw material supply device

Claims (1)

スクリュ式混練押出機(10)に原料を供給するためのフィーダ(1)と、表示部(11)を有し前記フィーダ(1)を制御するための制御器(12)と、前記制御器(12)に接続されると共に前記原料の供給量指令値(QS)と安全増加量(QL)の入力を受け付けるテンキー(13)とにより構成される原料供給装置(20)を用い、前記供給量指令値(QS)が供給変化量(QS')に変更された場合、前記制御器(12)は、前記供給変化量(QS')−供給量指令値(QS)≦安全増加量(QL)の時に、供給変化量(QS')＝供給量指令値(QS)とし、前記供給変化量(QS')−供給量指令値(QS)＞安全増加量(QL)の時に供給変化量(QS')＝供給量指令値＋安全増加量(QL)とし、前記安全増加量(QL)は、前記スクリュ式混錬押出機(10)において一時的に供給原料を増量する場合、安全に前記フィーダ(1)の押出量を増大させることができる供給増加量である予め定められた量であり、前記安全増加量(QL)を越える供給量増加設定が前記フィーダ(1)に与えられないように制御することを特徴とする原料供給方法。Feeder (1) for supplying the raw material to the screw type kneading extruder (10), a controller (12) for controlling the feeder (1) having a display unit (11), and the controller ( 12) and using a raw material supply device (20) configured by a numeric keypad (13) that accepts input of the raw material supply amount command value (QS) and a safety increase amount (QL), the supply amount command When the value (QS) is changed to the supply change amount (QS '), the controller (12), the supply change amount (QS')-supply amount command value (QS) ≤ safe increase amount (QL) Sometimes, supply change amount (QS ') = supply amount command value (QS), and supply change amount (QS') when supply change amount (QS ')-supply amount command value (QS)> safe increase amount (QL) ) = Supply amount command value + safety increase amount (QL), and the safe increase amount (QL) is used when the feed material is temporarily increased in the screw-type kneading extruder (10). 1) Increased supply that can increase the amount of extrusion Advance is the amount that is determined, the raw material supply method before Symbol supply amount increase setting exceeding the safety increment (QL), characterized in that the controls not given to the feeder (1) is an amount.
JP2000296389A 2000-09-28 2000-09-28 Raw material supply method Expired - Lifetime JP4294844B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000296389A JP4294844B2 (en) 2000-09-28 2000-09-28 Raw material supply method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000296389A JP4294844B2 (en) 2000-09-28 2000-09-28 Raw material supply method

Publications (2)

Publication Number Publication Date
JP2002103426A JP2002103426A (en) 2002-04-09
JP4294844B2 true JP4294844B2 (en) 2009-07-15

Family

ID=18778676

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000296389A Expired - Lifetime JP4294844B2 (en) 2000-09-28 2000-09-28 Raw material supply method

Country Status (1)

Country Link
JP (1) JP4294844B2 (en)

Also Published As

Publication number Publication date
JP2002103426A (en) 2002-04-09

Similar Documents

Publication Publication Date Title
US3860220A (en) Multi-section screw extruder
EP2636504B1 (en) Kneading/extruding equipment and control method thereof
US4550002A (en) Method and apparatus for achieving optimum discharge from a twin-screw extrusion device
WO1990005057A1 (en) Back pressure control method and apparatus for electric injection molding machine
EP2371519B1 (en) Startup control method and startup control device of resin extruder
JP4294844B2 (en) Raw material supply method
JPH04125123A (en) Operation control method for resin extrusion molding device and its device
JP3889941B2 (en) Operation control apparatus and operation control method for extrusion molding apparatus
JPH026118A (en) Method and device for controlling resin pressure of extrusion molding equipment
JP4890374B2 (en) Raw material supply control method and apparatus for extruder
JP2003266523A (en) Control system of rubber continuous molding apparatus
JP2006159622A (en) Rubber member molding equipment and rubber material molding method
JPH02281919A (en) Injection plasticizing device of injection molding machine
JP2000127225A (en) Method and apparatus for controlling operation of twin- screw extruder
JP2014201043A (en) Roller head extruder and control method thereof
JPH09155953A (en) Method for controlling operation of extrusion molding machine
JP4534225B2 (en) Rubber member molding equipment and rubber member molding method
JP2668428B2 (en) Purge end detection method
JPH0566851B2 (en)
JP6950455B2 (en) Rubber extruder and method
JP2587494B2 (en) Extruder
JP3053977B2 (en) How to set injection operation conditions for injection molding machines
JPH1190914A (en) Extrusion molding equipment
JP3279596B2 (en) Operation control system for plastic extruder
JP2003311805A (en) Extruder system and control unit for extruder

Legal Events

Date Code Title Description
RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20060529

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20070320

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20090120

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20090305

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20090331

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20090409

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120417

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

Ref document number: 4294844

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130417

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130417

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140417

Year of fee payment: 5

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250