JP3165602B2 - Control method of heating cylinder temperature of injection molding machine - Google Patents
Control method of heating cylinder temperature of injection molding machineInfo
- Publication number
- JP3165602B2 JP3165602B2 JP30135994A JP30135994A JP3165602B2 JP 3165602 B2 JP3165602 B2 JP 3165602B2 JP 30135994 A JP30135994 A JP 30135994A JP 30135994 A JP30135994 A JP 30135994A JP 3165602 B2 JP3165602 B2 JP 3165602B2
- Authority
- JP
- Japan
- Prior art keywords
- heating cylinder
- temperature
- set value
- molding machine
- injection molding
- 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
Links
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【0001】[0001]
【産業上の利用分野】射出成形機の加熱筒温度の制御方
法であって、特には二種類の温度設定を成形の中断を検
出することにより切り換え可能にする方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of controlling the temperature of a heating cylinder of an injection molding machine, and more particularly to a method of switching between two types of temperature settings by detecting interruption of molding.
【0002】[0002]
【従来の技術】加熱筒の温度制御を行う場合、図1に示
す如く設定部で設定した温度設定値と入力部に入力した
実測値とを記憶部のプログラムに従ってCPUでPID
演算した結果を電気信号として出力部からバンドヒータ
に出力する方式がある。従来の技術では、前記温度設定
値はそれぞれの温度ゾーンに対して一つであり設定部に
おいて手動操作しないかぎり設定値の変更は不可能であ
った。2. Description of the Related Art When controlling the temperature of a heating cylinder, as shown in FIG. 1, a CPU sets a temperature set value set by a setting unit and an actually measured value input to an input unit by a CPU according to a program in a storage unit.
There is a method of outputting the calculated result as an electric signal from an output unit to a band heater. In the related art, the temperature set value is one for each temperature zone, and it is impossible to change the set value unless manual operation is performed in the setting unit.
【0003】[0003]
【発明が解決しようとする課題】射出成形機の連続成形
中においては、バンドヒータからの熱量はすべて加熱筒
内で間欠的に通過してゆく樹脂に与えられ、加熱筒の温
度は設定温度を越えることはないが、成形が中断した場
合はバンドヒータや加熱筒の熱量は滞留した樹脂に長時
間与えられることになる。特に加熱筒後部においては、
連続成形中は原料樹脂が溶融しないように温度設定され
ているにも拘らず、成形中断時には原料樹脂は溶融して
スクリュの谷部に巻き付いてしまう。During the continuous molding of the injection molding machine, all the heat from the band heater is given to the resin that passes intermittently in the heating cylinder, and the temperature of the heating cylinder is set at the set temperature. Although it does not exceed, if the molding is interrupted, the calorie of the band heater or the heating cylinder is given to the staying resin for a long time. Especially at the rear of the heating cylinder,
In spite of the fact that the temperature is set so that the raw resin does not melt during continuous molding, when the molding is interrupted, the raw resin melts and winds around the valley of the screw.
【0004】前記の状態で成形が再開した時には、スク
リュの谷部に巻き付いた溶融樹脂の上を原料樹脂ペレッ
トがサラサラの状態で通過するため、樹脂を前方に送る
プレッシャが弱く、樹脂をしごく力も発生せず、所謂喰
い込み不良が起こる。この現象は成形立ち上げ時の原料
樹脂と時間の浪費を招くのである。When molding is resumed in the above state, the raw resin pellets pass in a smooth state over the molten resin wrapped around the valley of the screw, so that the pressure for sending the resin forward is weak, and the resin is extremely squeezed. It does not occur, so-called biting failure occurs. This phenomenon is a waste of raw material resin and time at the start of molding.
【0005】[0005]
【課題を解決するための手段】そのため、設定部、表示
部、記憶部、入力部および出力部を備えCPUに基ずい
て行う射出成形機の加熱筒温度の制御方式において、前
記記憶部に、加熱筒内における溶融樹脂の安全な滞留時
間を設定するタイマの設定値と、加熱筒温度の第一の設
定値と、加熱筒温度の第二の設定値とを設け、前記タイ
マの計時中に可塑化信号が発生しなかった時には加熱筒
の温度設定を第一の設定値から第二の設定値に切り換
え、その後可塑化信号が発生した時には加熱筒の温度設
定を第一の設定値に戻すようにしたのである。Therefore, in a method of controlling the temperature of a heating cylinder of an injection molding machine based on a CPU comprising a setting section, a display section, a storage section, an input section and an output section, the storage section includes: A set value of a timer that sets a safe residence time of the molten resin in the heating cylinder, a first set value of the heating cylinder temperature, and a second set value of the heating cylinder temperature are provided. When the plasticizing signal has not been generated, the temperature setting of the heating cylinder is switched from the first setting value to the second setting value, and thereafter, when the plasticizing signal is generated, the temperature setting of the heating cylinder is returned to the first setting value. I did it.
【0006】[0006]
【作用】このような制御を行うことにより、成形中断時
の加熱筒特には後部の温度を自動的に保温状態にまで下
げることが出来、さらに成形再開時には自動的に元の温
度設定に戻すことが可能となったのである。[Function] By performing such control, the temperature of the heating cylinder at the time of molding interruption, especially the temperature of the rear part can be automatically lowered to a heat retaining state, and further, when molding is resumed, the temperature is automatically returned to the original temperature setting. It became possible.
【0007】[0007]
【実施例】次に、本願発明の実施例を図面に基ずいて詳
細に説明する。図1は加熱筒の概略断面図と加熱筒温度
を制御する制御装置との関係を示すブロック図である。
1、2、3および4はバンドヒータであり、加熱筒の各
々のゾーンを制御装置21の第一出力部19からの信号
により電気的に加熱する。5、6、7および8はサーモ
カップルであり、加熱筒の各々のゾーンの温度を検出し
て制御装置21の入力部18に信号を送る。ここで、1
および5はノズル9用、2および6は加熱筒10の前部
用、3および7は加熱筒10の中部用、4および8は加
熱筒10の後部用である。Next, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing the relationship between a schematic sectional view of the heating cylinder and a control device for controlling the temperature of the heating cylinder.
Reference numerals 1, 2, 3 and 4 denote band heaters for electrically heating the respective zones of the heating cylinder in accordance with a signal from the first output unit 19 of the control device 21. 5, 6, 7 and 8 are thermocouples, which detect the temperature of each zone of the heating cylinder and send a signal to the input unit 18 of the control device 21. Where 1
And 5 are for the nozzle 9, 2 and 6 are for the front of the heating cylinder 10, 3 and 7 are for the middle of the heating cylinder 10, and 4 and 8 are for the rear of the heating cylinder 10.
【0008】スクリュ11は加熱筒10に嵌挿され、原
料供給口13から供給される原料樹脂を可塑化すべくス
クリュ回転駆動装置12によって回転されるとともに、
図示しない射出駆動装置によって前後進可能としてい
る。制御装置21は加熱筒の温度制御を行うとともに成
形機の作動を司るシーケンス制御も実行するので、スク
リュ回転駆動装置12は制御装置21の第二出力部20
からの信号によって駆動される。The screw 11 is inserted into the heating cylinder 10 and is rotated by the screw rotation driving device 12 to plasticize the raw material resin supplied from the raw material supply port 13.
It can be moved forward and backward by an injection drive device (not shown). Since the control device 21 performs the temperature control of the heating cylinder and also executes the sequence control for controlling the operation of the molding machine, the screw rotation driving device 12 controls the second output section 20 of the control device 21.
Driven by a signal from
【0009】制御装置21はマイクロプロセッサよりな
るCPU14を中核に記憶部15、設定部16、表示部
17、入力部18、第一出力部19および第二出力部2
0から構成されている。記憶部15はデータを一時記憶
するための揮発性メモリのRAMと、不揮発性メモリの
ROMからなる。設定部16において設定されるタイマ
の設定値と加熱筒温度の第一および第二の設定値、ある
いは入力部18からのデータおよび演算中のデータなど
はRAMに記憶される。一方、図2に示す本願発明の処
理手順であるコンピュータプログラムや射出成形機作動
のシーケンスプログラムなどはROMに格納されてい
る。The control device 21 has a storage unit 15, a setting unit 16, a display unit 17, an input unit 18, a first output unit 19, and a second output unit 2 centered on a CPU 14 comprising a microprocessor.
0. The storage unit 15 includes a volatile memory RAM for temporarily storing data and a non-volatile memory ROM. The set value of the timer and the first and second set values of the temperature of the heating cylinder set in the setting unit 16 or the data from the input unit 18 and the data being calculated are stored in the RAM. On the other hand, the computer program and the sequence program for operating the injection molding machine, which are the processing procedure of the present invention shown in FIG. 2, are stored in the ROM.
【0010】設定部16は前記のようにタイマの設定値
と加熱筒温度の第一および第二の設定値のほか、射出成
形機の作動に関わるすべての設定値を入力する部分であ
り、押釦スイッチ、キーボードスイッチ、タッチスイッ
チなどからなる。表示部17は設定値、実測値および警
報などのメッセージを表示するものであり、CRT、液
晶あるいはプラズマのディスプレイのほかパイロットラ
ンプやLED表示器が使用される。The setting section 16 is a section for inputting all the set values related to the operation of the injection molding machine in addition to the set value of the timer and the first and second set values of the heating cylinder temperature as described above. It consists of switches, keyboard switches, and touch switches. The display unit 17 displays messages such as set values, measured values, and alarms, and uses a CRT, a liquid crystal display, a plasma display, a pilot lamp, and an LED display.
【0011】入力部18はサーモカップルからの温度に
比例したアナログ信号を入力してデジタル信号に変換す
ると共に、射出成形機各部分のアクチュエータにおける
リミットスイッチ(図示しない)等のデジタル信号をC
PUに送る。そしてCPU14において、設定部16の
加熱筒温度設定値と入力部18からの加熱筒温度実測値
が、記憶部15に格納されたPID温度制御プログラム
に基ずいてフィードバック制御すべく演算され、加熱筒
温度実測値が加熱筒温度設定値に等しくなるように、第
一出力部19から加熱筒10の前部、中部および後部の
それぞれにおけるバンドヒータへの加熱信号が出力され
る。 第二出力部20はシーケンスプログラムが可塑化
信号を発すると、設定部16で予め設定されたスクリュ
回転数に応じた信号をスクリュ回転駆動装置へ出力す
る。また図示しない油圧切換弁などへの信号も出力す
る。The input section 18 receives an analog signal proportional to the temperature from the thermocouple, converts the signal into a digital signal, and converts a digital signal such as a limit switch (not shown) in an actuator of each part of the injection molding machine into a C signal.
Send to PU. The CPU 14 calculates the heating cylinder temperature set value of the setting unit 16 and the heating cylinder temperature measured value from the input unit 18 to perform feedback control based on the PID temperature control program stored in the storage unit 15. The first output unit 19 outputs a heating signal to the band heater at each of the front, middle, and rear portions of the heating cylinder 10 so that the measured temperature value becomes equal to the heating cylinder temperature set value. When the sequence program issues the plasticizing signal, the second output unit 20 outputs a signal corresponding to the screw rotation speed preset by the setting unit 16 to the screw rotation driving device. It also outputs a signal to a hydraulic switching valve (not shown).
【0012】ここで図1の加熱筒の概略断面図によって
実施例における可塑化状態を説明する。前記加熱筒10
の前部、中部および後部ゾーンの各領域は、それぞれの
バンドヒータ2、3、および4に対応している。加熱筒
内の原料樹脂の溶融状態は、連続成形中においては、後
部ゾーンでは溶融せずペレット状であり、中部ゾーンで
は溶融が始まり、前部ゾーンでは溶融が完了している。
成形中断時においては、約10分以上経過すると後部ゾ
ーンでも原料樹脂ペレットの溶融が始まり、スクリュの
谷部に溶融樹脂が巻き付くのである。成形再開時には、
後部ゾーンのスクリュ谷部に巻き付いた溶融樹脂の上に
新しい原料樹脂ペレットが供給されるが、後部ゾーンで
は樹脂を前方に押し出すプレッシャが低いため後部ゾー
ンのスクリュ谷部に巻き付いた溶融樹脂は容易にそこか
ら剥がれず、ペレットが前方に送られなくなるため樹脂
の可塑化が出来なくなるのである。Here, the plasticized state in the embodiment will be described with reference to a schematic sectional view of the heating cylinder of FIG. The heating tube 10
Of the front, middle, and rear zones correspond to the respective band heaters 2, 3, and 4. During the continuous molding, the molten state of the raw material resin in the heating cylinder is in a pellet shape without being melted in the rear zone, melting has begun in the middle zone, and has been completed in the front zone.
When the molding is interrupted, after about 10 minutes or more, the melting of the raw resin pellets starts in the rear zone, and the molten resin winds around the valley of the screw. When resuming molding,
New raw material resin pellets are supplied on the molten resin wrapped around the screw valley in the rear zone.However, the molten resin wrapped around the screw valley in the rear zone can be easily removed because the pressure to push the resin forward is low in the rear zone. The pellets are not peeled off there, and the pellets cannot be sent forward, so that plasticization of the resin cannot be performed.
【0013】一実施例として、原料樹脂がPMMA(ア
クリル樹脂)の場合における加熱筒の第一の設定値と第
二の設定値は次の如くである。 第一の設定値(摂氏) 第二の設定値(摂氏) 前部 250 250 中部 220 150 後部 190 80As one embodiment, the first set value and the second set value of the heating cylinder when the raw material resin is PMMA (acrylic resin) are as follows. First set value (Celsius) Second set value (Celsius) Front 250 250 Middle 220 150 Rear 190 80
【0014】次に図2に示す流れ図に基ずいて作動を説
明する。制御装置21のCPU14は、記憶部15に格
納された図2のコンピュータプログラムを実行するので
ある。ステップS1において、シーケンスプログラムに
基ずいてCPUが可塑化信号を立ち上げると、スクリュ
が回転して可塑化が開始するとともにタイマの計時が開
始する。(ステップ2)ステップ3では、タイマの計時
中に次の可塑化信号が立ち上がったかどうかを見てお
り、立ち上がった場合は計時中のタイマをリセット(ス
テップS4)してステップS1に戻り、立ち上がらなか
ったときはステップS5に進みタイマの計時終了を待
つ。ステップS5では、タイマの計時終了つまりタイマ
の設定時間が経過したかどうかを見ており、タイマの計
時が設定まで達していなければステップS3に戻る。タ
イマの設定時間が経過すればステップS6に進み、成形
の中断時間が長くなって加熱筒内における溶融樹脂の安
全な滞留時間が過ぎたと判断して、加熱筒の温度設定を
第一の設定値から第二の設定値に切り換え加熱筒の温度
を下げるのである。Next, the operation will be described with reference to the flowchart shown in FIG. The CPU 14 of the control device 21 executes the computer program of FIG. In step S1, when the CPU raises the plasticizing signal based on the sequence program, the screw rotates to start plasticizing and the timer starts counting. (Step 2) In Step 3, it is checked whether or not the next plasticization signal has risen during the counting of the timer. If it has risen, the timer during counting is reset (Step S4), and the process returns to Step S1 and does not rise. If it has, the process proceeds to step S5 and waits for the end of time measurement by the timer. In step S5, it is checked whether or not the timer has finished counting, that is, whether or not the set time of the timer has elapsed. If the timer has not reached the set time, the process returns to step S3. If the set time of the timer elapses, the process proceeds to step S6, where it is determined that the interruption time of the molding is long and the safe residence time of the molten resin in the heating cylinder has passed, and the temperature setting of the heating cylinder is set to the first set value. To the second set value to lower the temperature of the heating cylinder.
【0015】成形の中断状態が続いた後での最初の可塑
化信号が立ち上がったら(ステップS7)加熱筒の温度
設定値を第二の設定値から再び第一の設定値に切り換え
加熱筒の温度を元の成形時の設定値に戻すのである。
(ステップS8)When the first plasticizing signal rises after the interruption of molding is continued (step S7), the temperature set value of the heating cylinder is switched from the second set value to the first set value again, and the temperature of the heating cylinder is changed. Is returned to the original setting value at the time of molding.
(Step S8)
【0016】[0016]
【発明の効果】加熱筒の温度設定を成形の中断時に自動
的に保温状態に下げ、成形の再開時には再び自動的に元
の成形時の温度にするので、成形時の温度のまま成形を
中断したときに生ずる原料樹脂と時間の浪費を避けるこ
とが可能となる。According to the present invention, the temperature setting of the heating cylinder is automatically lowered to the heat retaining state when the molding is interrupted, and is automatically returned to the original molding temperature when the molding is resumed. Therefore, the molding is interrupted at the molding temperature. It is possible to avoid wasting of the raw material resin and the time that occurs when doing so.
【図1】本願発明の加熱筒の温度制御方式を示す、加熱
筒の概略断面図と制御装置のブロック図である。FIG. 1 is a schematic sectional view of a heating cylinder and a block diagram of a control device, showing a heating cylinder temperature control method of the present invention.
【図2】本願発明の加熱筒の温度制御方法を示す流れ図
である。FIG. 2 is a flowchart showing a method of controlling the temperature of a heating cylinder according to the present invention.
1 ノズル用バンドヒータ 12
スクリュ回転駆動装置 2 加熱筒前部用バンドヒータ 13
原料供給口 3 加熱筒中部用バンドヒータ 14
CPU 4 加熱筒後部用バンドヒータ 15
記憶部 5 ノズル用サーモカップル 16
設定部 6 加熱筒前部用サーモカップル 17
表示部 7 加熱筒中部用サーモカップル 18
入力部 8 加熱筒後部用サーモカップル 19
第一出力部 9 ノズル 20
第二出力部 10 加熱筒 21
制御装置 11 スクリュ1 band heater for nozzle 12
Screw rotation drive device 2 Band heater for heating tube front part 13
Raw material supply port 3 Band heater for middle part of heating cylinder 14
CPU 4 band heater for heating tube rear part 15
Storage unit 5 Thermocouple for nozzle 16
Setting part 6 Thermocouple for heating tube front 17
Display part 7 Thermocouple for middle part of heating cylinder 18
Input section 8 Thermocouple for rear part of heating cylinder 19
First output unit 9 Nozzle 20
Second output unit 10 Heating cylinder 21
Control device 11 Screw
フロントページの続き (56)参考文献 特開 昭63−64717(JP,A) 特開 平4−67929(JP,A) 特開 昭63−91221(JP,A) 特開 平4−148912(JP,A) 実開 昭63−31915(JP,U) 実開 平3−36427(JP,U) 実開 平3−87215(JP,U) 実開 平2−126813(JP,U) 実公 昭44−19961(JP,Y1) (58)調査した分野(Int.Cl.7,DB名) B29C 45/00 - 45/84 Continuation of front page (56) References JP-A-63-64717 (JP, A) JP-A-4-67929 (JP, A) JP-A-63-91221 (JP, A) JP-A-4-148912 (JP) , A) Japanese Utility Model Showa 63-31915 (JP, U) Japanese Utility Model Utility Model No. 3-36427 (JP, U) Japanese Utility Model Utility Model No. 3-87215 (JP, U) Japanese Utility Model Utility Model No. 2-126813 (JP, U) Japanese Utility Model Sho 44-19961 (JP, Y1) (58) Fields investigated (Int. Cl. 7 , DB name) B29C 45/00-45/84
Claims (2)
出力部を備えCPUに基ずいて行う射出成形機の加熱筒
温度の制御方式において、 前記記憶部に、加熱筒内における溶融樹脂の安全な滞留
時間を設定し可塑化信号の立ち上がりで計時開始するタ
イマの設定値と、加熱筒温度の第一の設定値と、加熱筒
温度の第二の設定値とを設け、前記タイマの計時中に可
塑化信号が発生しなかった時には加熱筒の温度設定を第
一の設定値から第二の設定値に切り換え、その後可塑化
信号が発生した時には加熱筒の温度設定を第一の設定値
に戻すことを特徴とする射出成形機の加熱筒温度の制御
方法。1. A method for controlling the temperature of a heating cylinder of an injection molding machine, comprising: a setting section, a display section, a storage section, an input section, and an output section, based on a CPU. Set a safe dwell time and set a timer to start timing at the rise of the plasticizing signal, a first set value for the heating cylinder temperature, and a second set value for the heating cylinder temperature. When the plasticizing signal is not generated during the time measurement, the temperature setting of the heating cylinder is switched from the first set value to the second set value. When the plasticizing signal is generated, the temperature setting of the heating cylinder is set to the first setting. A method for controlling the temperature of a heating cylinder of an injection molding machine, wherein the temperature is returned to a value.
と第二の設定値を有するのは加熱筒の後部ゾーンである
請求項1における射出成形機の加熱筒温度の制御方法。2. The method for controlling the temperature of a heating cylinder of an injection molding machine according to claim 1, wherein the temperature of the heating cylinder has a first set value and a second set value in a rear zone of the heating cylinder.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP30135994A JP3165602B2 (en) | 1994-11-09 | 1994-11-09 | Control method of heating cylinder temperature of injection molding machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP30135994A JP3165602B2 (en) | 1994-11-09 | 1994-11-09 | Control method of heating cylinder temperature of injection molding machine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH08132501A JPH08132501A (en) | 1996-05-28 |
JP3165602B2 true JP3165602B2 (en) | 2001-05-14 |
Family
ID=17895925
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP30135994A Expired - Fee Related JP3165602B2 (en) | 1994-11-09 | 1994-11-09 | Control method of heating cylinder temperature of injection molding machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3165602B2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110524830A (en) * | 2019-07-25 | 2019-12-03 | 广东柳道热流道系统有限公司 | A kind of self-induction protection adapted to injection system |
JP2022131247A (en) * | 2021-02-26 | 2022-09-07 | 住友重機械工業株式会社 | Injection molding machine |
CN113715289A (en) * | 2021-08-31 | 2021-11-30 | 中山力劲机械有限公司 | Control method for automatic heat preservation of injection molding machine |
-
1994
- 1994-11-09 JP JP30135994A patent/JP3165602B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH08132501A (en) | 1996-05-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20060141092A1 (en) | Injection molding machine and temperature control method of injection molding machine | |
JP3165602B2 (en) | Control method of heating cylinder temperature of injection molding machine | |
US7218990B2 (en) | Control device for use in injection molding machine | |
JP3851618B2 (en) | Injection molding machine | |
JP3389248B2 (en) | Temperature control method of heating cylinder of injection molding machine | |
JP2004199526A (en) | Heating control method, heating control program and heating control device | |
JP3611667B2 (en) | Temperature control method for injection molding machine | |
JP3567016B2 (en) | Injection molding machine | |
JP3838997B2 (en) | Temperature control device for injection molding machine | |
JP2008114403A (en) | Device and method for setting molding conditions | |
JP2004188798A (en) | Metering method for injection molding machine | |
JP5390803B2 (en) | Injection molding machine with temperature control device | |
JPH0439410B2 (en) | ||
JP3423995B2 (en) | Heating barrel temperature controller | |
JP3245265B2 (en) | Injection molding method and injection device | |
JPH09254187A (en) | Sprue break control device of injection molding machine | |
JP2981099B2 (en) | Injection molding machine barrel temperature control method | |
JP3542060B2 (en) | Injection molding machine and nozzle temperature control method thereof | |
JP2006305777A (en) | Control device of injection molding machine | |
JPH0857901A (en) | Injection molding machine capable of automatically setting material feed amount and its method | |
JP2002028960A (en) | Method for controlling screw of injection molding machine | |
JPS61181624A (en) | Controller of motor driven injection molding machine | |
JP3575519B2 (en) | Injection molding machine and its injection control method | |
JPH09109222A (en) | Resin temperature controlling method and injection molding machine | |
JPH11227019A (en) | Method and apparatus for controlling temperature of injection machine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090302 Year of fee payment: 8 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100302 Year of fee payment: 9 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100302 Year of fee payment: 9 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110302 Year of fee payment: 10 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120302 Year of fee payment: 11 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130302 Year of fee payment: 12 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130302 Year of fee payment: 12 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140302 Year of fee payment: 13 |
|
LAPS | Cancellation because of no payment of annual fees |