JP3076941B2 - Rubber extruder control method - Google Patents

Rubber extruder control method

Info

Publication number
JP3076941B2
JP3076941B2 JP04224643A JP22464392A JP3076941B2 JP 3076941 B2 JP3076941 B2 JP 3076941B2 JP 04224643 A JP04224643 A JP 04224643A JP 22464392 A JP22464392 A JP 22464392A JP 3076941 B2 JP3076941 B2 JP 3076941B2
Authority
JP
Japan
Prior art keywords
extruder
pressure
head
rotation speed
control method
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 - Fee Related
Application number
JP04224643A
Other languages
Japanese (ja)
Other versions
JPH0647796A (en
Inventor
亘 本田
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.)
Nishikawa Rubber Co Ltd
Original Assignee
Nishikawa Rubber Co 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 Nishikawa Rubber Co Ltd filed Critical Nishikawa Rubber Co Ltd
Priority to JP04224643A priority Critical patent/JP3076941B2/en
Publication of JPH0647796A publication Critical patent/JPH0647796A/en
Application granted granted Critical
Publication of JP3076941B2 publication Critical patent/JP3076941B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • B29C48/92—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
    • B29C2948/92009—Measured parameter
    • B29C2948/92019—Pressure
    • 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
    • B29C2948/92361—Extrusion unit
    • B29C2948/92409—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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92514—Pressure
    • 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
    • B29C2948/9259—Angular velocity
    • 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
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92885—Screw or gear
    • 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)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【産業上の利用分野】本発明は、押出機の吐出開始時、
ヘッド先端に取付けた口金の破損を防ぐと共に、定常運
転状態への移行期間を短縮するようにした吐出開始時の
押出成形機回転数制御方法に関するものである。BACKGROUND OF THE INVENTION The present invention relates to
The present invention relates to a method for controlling the rotation speed of an extruder at the start of discharge, which prevents damage to a die attached to the tip of a head and shortens a transition period to a steady operation state.

【０００２】[0002]

【従来の技術】従来、押出機により押出成形を開始した
直後に、押出機先端に取付けた口金が被押出物のゴムの
圧力を受けて破損することがあった。そのため、口金の
破損を防止することを目的に、ヘツド内部にゴムが充填
され、口金から押出され、吐出圧力が安定する迄は、手
動操作により押出機を低回転数で運転し、その回転数の
上昇も徐々に行っていた。2. Description of the Related Art Heretofore, immediately after extrusion was started by an extruder, a die attached to a tip of the extruder was sometimes damaged by the pressure of rubber of a material to be extruded. Therefore, in order to prevent breakage of the die, the head is filled with rubber, extruded from the die, and the extruder is manually operated at a low rotation speed until the discharge pressure is stabilized. Was gradually rising.

【０００３】しかしながら、上記低回転数での運転によ
り、押出機内部のゴム温度が低下し，吐出量が安定し，
所定の品質の製品が吐出するようになるまでの時間ロ
ス，材料ロスが大きいこと、上記の通り、操作ミスによ
る口金の破損事故が発生すること等の問題点がある。However, the operation at the low rotation speed lowers the rubber temperature inside the extruder, stabilizes the discharge rate,
There are problems such as a large time loss and a large material loss until a product of a predetermined quality is discharged, and as described above, an accident of damage to the base due to an operation error occurs.

【０００４】[0004]

【発明が解決しようとする課題】解決しようとする問題
点は、上記従来の押出機回転数の制御方法は、所定の品
質の製品が吐出するようになるまでの時間ロス，材料ロ
スが大きいこと、操作ミスによる口金の破損事故が発生
すること等である。The problem to be solved is that the conventional method for controlling the number of revolutions of an extruder causes a large loss of time and material until a product of a predetermined quality is discharged. And an accident of damage to the base due to an operation error may occur.

【０００５】[0005]

【課題を解決するための手段】図面を参考にして説明す
る。本発明は、押出機１０ヘッド１１内の圧力を検出
し、その圧力を口金１２が破損しない上限値に保持する
よう押出機１０の回転数を自動的に制御する工程、及び
押出機１０の回転数が設定値に到達した時点で前記制御
を解除する工程とよりなるものである。The present invention will be described with reference to the drawings. The present invention detects the pressure in the extruder 10 head 11 and automatically controls the rotation speed of the extruder 10 so as to maintain the pressure at an upper limit value at which the die 12 is not damaged. Releasing the control when the number reaches the set value.

【０００６】[0006]

【実施例】実施例について説明すると、１０は押出機、
１１は押出機１０のヘッド、１２はヘッド１１の先端に
取付けた口金であって、押出機１０を回わすことによ
り、被押出物のゴム６０がヘッド１１を経て、口金１２
から押出すようになっている。２０はヘッド１１側面に
取付けた圧力センサー、３０はヘッダー１１の許容圧力
設定器、４０は押出機１０を回わすモーター、５０はコ
ントローラーであって、ヘッド１１内のゴムの圧力を検
出し、その圧力を口金１２が破損しない上限値に保持す
る如く押出機１０の回転数を自動的に制御する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the examples, 10 is an extruder,
Reference numeral 11 denotes a head of the extruder 10, and 12 denotes a base attached to the tip of the head 11. By rotating the extruder 10, the rubber 60 to be extruded passes through the head 11,
It is designed to extrude from. Reference numeral 20 denotes a pressure sensor attached to the side of the head 11, reference numeral 30 denotes an allowable pressure setting device of the header 11, reference numeral 40 denotes a motor for rotating the extruder 10, reference numeral 50 denotes a controller, which detects the pressure of rubber in the head 11, and detects the pressure. The rotation speed of the extruder 10 is automatically controlled so that the pressure is maintained at an upper limit value at which the base 12 is not damaged.

【０００７】作用について説明すると、予め口金１２が
破損しないヘッド１１の許容圧力を求めておく。次いで
許容圧力設定器３０によりヘッド１１の圧力上限値を前
記許容圧力に合わせて設定すると共に、押出機１０の所
定回転数を設定する。以上の準備が完了したら、モータ
ー４０を回転させて、ゴムの押出を開始する。そうする
と、コントローラー５０が働き、圧力センサー２０によ
り常にヘッド１１内の圧力が検出され、その圧力が常に
前記設定上限値になるように制御される。このようにし
て、時間の経過と共に、押出機１０の回転数が徐々に上
昇し、その回転数が設定回転数に到達した時点で、前記
制御は自動的に解除されて、定常運転に移る。The operation will be described. The allowable pressure of the head 11 at which the base 12 is not damaged is determined in advance. Next, the upper limit value of the pressure of the head 11 is set by the allowable pressure setting device 30 in accordance with the allowable pressure, and the predetermined rotation speed of the extruder 10 is set. When the above preparation is completed, the motor 40 is rotated to start extruding the rubber. Then, the controller 50 operates, and the pressure in the head 11 is always detected by the pressure sensor 20, and the pressure is controlled so as to always reach the set upper limit value. In this manner, as the time elapses, the rotation speed of the extruder 10 gradually increases, and when the rotation speed reaches the set rotation speed, the control is automatically released and the operation shifts to a steady operation.

【０００８】[0008]

【発明の効果】本発明は以上のように構成されるため、
押出機１０の内部のゴム温度変化が最小になり、口金１
２よりの吐出量が早期に安定し、運転開始初期の時間ロ
ス，材料ロスが大幅に低減される。Since the present invention is configured as described above,
The rubber temperature change inside the extruder 10 is minimized,
2, the discharge amount is stabilized at an early stage, and the time loss and material loss at the beginning of the operation are greatly reduced.

【０００９】押出機１０の回転数が自動的に制御され、
オペレーターによる操作ミスが無くなり、口金１２の破
損が防止される。The rotation speed of the extruder 10 is automatically controlled,
Operation errors by the operator are eliminated, and damage to the base 12 is prevented.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明の実施例を示す機器系統図である。FIG. 1 is an equipment system diagram showing an embodiment of the present invention.

【符号の説明】[Explanation of symbols]

１０ 押出機 １１ ヘッド １２ 口金 ２０ 圧力センサー ３０ 許容圧力設定器 ４０ モーター ５０ コントローラー ６０ ゴム DESCRIPTION OF SYMBOLS 10 Extruder 11 Head 12 Cap 20 Pressure sensor 30 Allowable pressure setting device 40 Motor 50 Controller 60 Rubber

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】 押出機ヘッド（１１）内の圧力を検出
し、その圧力を口金（１２）が破損しない上限値に保持
する如く押出機（１０）の回転数を自動的に制御する工
程、及び押出機（１０）の回転数が設定値に到達した時
点で前記制御を解除する工程とよりなる吐出開始時のゴ
ム押出機制御方法。Detecting the pressure in the extruder head (11) and automatically controlling the rotation speed of the extruder (10) so as to maintain the pressure at an upper limit at which the die (12) is not damaged; And a step of releasing the control when the number of revolutions of the extruder (10) reaches a set value.
JP04224643A 1992-07-30 1992-07-30 Rubber extruder control method Expired - Fee Related JP3076941B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP04224643A JP3076941B2 (en) 1992-07-30 1992-07-30 Rubber extruder control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP04224643A JP3076941B2 (en) 1992-07-30 1992-07-30 Rubber extruder control method

Publications (2)

Publication Number Publication Date
JPH0647796A JPH0647796A (en) 1994-02-22
JP3076941B2 true JP3076941B2 (en) 2000-08-14

Family

ID=16816936

Family Applications (1)

Application Number Title Priority Date Filing Date
JP04224643A Expired - Fee Related JP3076941B2 (en) 1992-07-30 1992-07-30 Rubber extruder control method

Country Status (1)

Country Link
JP (1) JP3076941B2 (en)

Also Published As

Publication number Publication date
JPH0647796A (en) 1994-02-22

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