WO1989008543A1 - Method and apparatus for pressure control of an electrically powered injection molding machine - Google Patents
Method and apparatus for pressure control of an electrically powered injection molding machine Download PDFInfo
- Publication number
- WO1989008543A1 WO1989008543A1 PCT/JP1989/000244 JP8900244W WO8908543A1 WO 1989008543 A1 WO1989008543 A1 WO 1989008543A1 JP 8900244 W JP8900244 W JP 8900244W WO 8908543 A1 WO8908543 A1 WO 8908543A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pressure
- pressure control
- transition
- torque limit
- limit value
- Prior art date
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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/57—Exerting after-pressure on the moulding material
Definitions
- the present invention relates to a pressure control method capable of smoothly performing a multi-stage pressure control in an electric injection molding machine, and a control method thereof.
- multi-stage pressure control is performed to produce high quality molded products.
- the dwelling process is divided into a plurality of dwelling stages, and the target dwelling pressure at each dwelling stage is set to a different value to control the dwelling pressure in multiple stages.
- the electric injection molding machine holds the torque limit value (target pressure-holding pressure) to limit the output torque of the servomotor that drives the injection screw in the axial direction.
- Open-loop control of the holding pressure by sequentially switching according to the passage of time from the start, or detection of the torque limit value that is sequentially switched in this way and the holding pressure actually applied to the resin
- the holding pressure is closed-loop controlled (feedback control) according to the deviation from the value.
- Control gay Nonconformity can be resolved without changing the configuration of the control system, for example, by adjusting the proportional, derivative, and integral parameters of the PID control section of the control system.
- An object of the present invention is to make it possible to adapt a multi-stage pressure control pattern in an injection molding machine, particularly a target pressure switching pattern between adjacent pressure control stages, to a response output characteristic of a servomotor mounted on the injection molding machine, and Deterioration of responsiveness due to the inertia of the servomotor and the working part of the pressurizing device g can be suppressed, and a special servomotor must be installed in the injection molding or the servomotor once installed must be replaced with another servomotor.
- a pressure control method applied to an electric injection molding machine in which an operating unit for pressurizing and concealing is driven by a servomotor.
- the method comprises the steps of: setting a target pressure in each pressure control stage of a pressure control step including a plurality of pressure control stages and a predetermined switching time for completing switching of a target pressure between adjacent pressure control stages. And the step (a) of storing and storing the target pressure before and after the transition from the start of the transition to the elapse of a predetermined switching time associated with the transition each time a transition is made between adjacent pressure control stages.
- a pressure control device mounted on an injection molding machine for limiting an output torque of a servomotor that drives an operating section of a pressurizing device to a torque limit value representing a target pressure.
- the device g completes the switching of the torque limit value in each pressure control stage and the target pressure between adjacent pressure control stages in the pressure control process including a plurality of pressure control stages.
- Means for setting the predetermined switching time to be performed, and the torque limit value and the predetermined switching time thus set are recorded. Each time a transition is made between adjacent pressure control stages, a predetermined switching time associated with the transition is divided by a predetermined pressure control execution cycle to calculate the number of corrections and shift.
- a pressure control device g of an injection molding machine for limiting an output torque of a servomotor that drives an operating portion of a pressurizing device to a torque limit value representing a target pressure.
- the device determines the torque limit value in each pressure control stage of the pressure control process consisting of a plurality of pressure control stages and the set switching time to complete the target pressure switching between adjacent pressure control stages.
- Switching time before and after transition From the target pressure at the pressure control stage before the transition to the pressure control stage after the transition, according to a predetermined arithmetic expression that includes, as parameters, the respective torque limit values and the elapsed time from the start of the transition at the pressure control stage.
- the target pressure (torque limit value) is changed from the target pressure in the pressure control stage before the transition within the predetermined switching time. Since the target pressure in the pressure control stage after the transition was gradually changed, the resulting pressure control pattern, especially the target pressure switching pattern between adjacent pressure control stages, was controlled by the servo mounted on the injection molding machine. It is suitable for the response output characteristics of the motor and can suppress the deterioration of the response due to the inertia of the servomotor and the operating part of the pressurizing device, so that many injection molding machines can be installed without using a special servomotor.
- FIG. 1 is a schematic block diagram showing a main part of an electric injection molding machine equipped with a pressure control device according to one embodiment of the present invention
- FIG. 2 is a torque limit value and a pressure holding value at each pressure holding stage.
- FIG. 3 is a diagram showing a table for storing time and a predetermined switching time.
- FIG. 3 is a flowchart showing a part of a pressure-holding control operation according to an embodiment of the present invention, which is executed in the injection molding machine of FIG.
- Fig. 4 is a flowchart showing the rest of the dwell control operation
- Fig. 5 is a graph showing the relationship between the torque limit value stored in the table and dwell time
- Fig. 6 is a dwell control operation Fig.
- FIG. 9 shows a pressure-holding control operation according to another embodiment of the present invention performed in a molding machine.
- FIG. 9 is a flowchart showing the relationship between the torque limit value and the time when the torque limit value at the pressure holding stage before the transition is larger than that after the transition, and
- FIG. Fig. 0 is the same as Fig. 9 when the torque limit value at the pressure holding stage before the transition is smaller than that after the transition.
- the electric injection molding machine to which the multi-stage pressure control method according to one embodiment of the present invention is applied includes an injection * pressure holding device, a mold clamping device, a edge: a pi-cutter, etc.
- the injection * pressure holding device includes an injection servo motor 1 for driving the screw 2 as an operating part in the axial direction and a servo motor for screw rotation (not shown).
- a position detector, for example, a pulse coder 3 is attached to the servomotor 1.
- the injection molding machine is provided with a control cover 10 having a function as a pressure control device and other conventionally known control functions.
- the control unit g10 is a central processing unit for numerical control (hereinafter, referred to as NC CPU) 11 for controlling the operation of the entire injection molding machine, the pulse distribution processing for the servo motor of each axis, and the like. And a servo for controlling the speed and output torque of the servomotor of each axis according to the command values from the NC CPU 11 (for example, the pulse distribution amount for each axis and the torque limit value for the injection axis).
- a central processing unit for control hereinafter referred to as a servo CPU 12 is provided.
- the CPU 13 for NC is connected with a ROM 13, a RAM 14 and a manual data input device 15 with a CRT display (hereinafter referred to as CRT / MDI) 15 via a bus 16.
- CRT / MDI CRT display
- ROM 13 contains a control program for managing the entire injection molding machine, a sequence program for controlling the sequence operation of the injection molding machine, a program for controlling the servo CPU 12, and the like.
- AM 14 is used to control various parameters including the maximum injection pressure (target injection pressure at the final stage of the injection process) set via the CRT / MD I 15 and the torque limit at each pressure stage in the pressure holding process.
- the target value (target holding pressure), the holding time and the predetermined switching time are stored.
- the servo CPU 12 has a RAM 17, a speed control circuit 18, and a torque control circuit 19, which constitutes a so-called software service in cooperation with both, connected to a gun via a bus 20.
- the command value from the NC CPU 11 and the servo CPU control program transferred from the CPU 11 via the path 21 when the power is turned on are temporarily stored in the RAM 17.
- the speed of the servo motor 1 is controlled based on the pulse distribution amount and the feed pack signal from the pulse coder 3, and the output torque of the servo motor 1 is controlled based on the torque limit value.
- the time T i and the predetermined switching time T i and other various control parameters including the maximum injection pressure are input to the controller g 10.
- the CPU 11 for NC causes the parameters I, P i, and the tablet 1 to be recorded in the table TB (FIG. 2) in the storage unit 14.
- Injection molding machines repeatedly execute an injection molding cycle consisting of a series of steps of mold clamping, injection, holding pressure, weighing, mold opening, and product removal.
- the CPU 11 for the NC when the pressure-holding step is started, the CPU 11 for the NC, for example, executes the pulse distribution execution cycle in the same cycle as the pulse distribution execution cycle for the servo motor of each axis.
- the pressure control operation mainly including the torque limit value setting process is executed.
- the CPU 11 determines whether or not a value C indicating the number of times the torque limit value is updated, which will be described later, of the correction number counter provided in the RAM 14 is ⁇ 0 ”, for example. It is determined (step S 1).
- the correction frequency counter is reset to ⁇ 0 '' by initialization at power-on, the counter value at the start of the pressure-holding step in the first injection molding cycle is ⁇ 0 J, and the result of the determination in step S1 is Be affirmative.
- the NC CPU 11 determines the current or the number of pressure-holding stages (i + 1) to be shifted based on the value i of the pressure-holding stage number counter provided in the RAM 14, for example.
- a first register R (P1) provided in the RAM 14 stores a hundred pressures at the final stage (pressure control stage) of the injection process, such as the maximum injection pressure PS (generally, Set the target pressure at the pressure control stage before the shift>
- set the torque limit value P 1 at the first pressure holding stage (generally, the value at the pressure holding stage after the shift P i + 1 ) Is read from the table TB, and is set, for example, in the second register R (P 2) provided in the RAM 14 (step S 6), and the second register R (P 2) is read from the value of the second register R (P 2).
- the difference between the two is calculated by subtracting the value of the register R (P1>) from 1 and dividing this output value by the number of corrections n obtained in step S3 to obtain the torque limit for each pressure-holding processing execution cycle ⁇ .
- Correction amount Add P The added value is stored in the register (step S8), and the added value is stored in the torque limit value storage area of the RAM 17 to update the torque limit value. (Step S3).
- step S 10 it is determined whether or not the value C of the correction number counter is “0” (step S 10). In this case, the determination result is affirmative, and the flow shifts to stip S 11 to read the dwelling time T 1 (generally T i + 1) at the first dwell stage from the table TB, and set this to the timer TE. Then, the timer is started (step S12), and ⁇ 1j is added to the value of the correction counter (schip S13), and the current pressure The torque limit value setting process in the control operation execution cycle (pulse distribution cycle) ends.
- the servo CPU 12 reads the torque limit value updated in step S9 from the RAM 17 and, based on the torque limit value, outputs the output torque of the servo motor 1 via the torque control circuit 9 to this torque limit.
- the target pressure here, PS + ⁇ (mm P ⁇ 0)
- PS + ⁇ (mm P ⁇ 0) in this cycle is added to screw 2 while controlling to the value.
- step S1 Since the torque limit value has been corrected in the previous cycle, it is determined in step S1 that the value C of the correction count counter is not ⁇ 0 ”, and the process proceeds to step S14 to save the value set in the timer TE. It is determined whether or not the pressure time T 1 (generally, T i +1) has elapsed. Here, the judgment result is negative, so the value of the
- step S15 It is determined whether or not C has reached the required number of corrections n (step S15).
- the correction amount P is added again to the first register R (P 1), and the second torque limit value is obtained. Is corrected and updated (steps S8 and S9), and the process proceeds to step S10. Since the value C is ⁇ 1 j, the steps can be performed without performing steps S 1 1 and S 1 2.
- the servo CPU 12 operates so as to apply a holding pressure of PS + 2 mP to the screw 2 according to the corrected torque limit value.
- the servo CPU 12 controls the output torque of the servo motor 1 to the torque limit value P 1.
- the torque limit value switching pattern which is a multiple of 1, is such that the motor can favorably follow this change pattern in light of the response output characteristics of the servomotor 1 and the following failure due to the inertia of the servomotor 1 and the screw 2 is prevented.
- the holding pressure generated as a result of deceleration control of the servo motor 1 with the switching time ⁇ 1 as a time constant can follow the torque limit value change pattern well. Therefore, the pattern is set as follows. At the time of transition, unlike the case of using the pattern shown in Fig. 5, in which the torque limit value changes stepwise, the holding pressure applied to the screw 2 driven by the servo motor 1 causes the servo motor 1 to respond poorly. In addition, due to the inertia of the servo motor 1 and the screw 2, the torque limit value is not substantially undershot.
- step S2 to read the predetermined switching time ⁇ T2 in the second pressure-holding stage from the table TB, and then calculates the required number of corrections n in the second pressure-holding stage (step S2). 3), it is determined whether or not the force counter value i is ⁇ 0 J (step S4), and the result of this determination is negative, and the torque limit value P 2 in the second pressure-holding stage is obtained from the chiple TB. Read and set this in the second register R (P2) (Step S6).
- the CPU 11 for NC sets the value of the correction counter C
- the torque limit value is changed from the value P 1 for each cycle by using the correction arm P for shifting from the first pressure holding stage to the second pressure holding stage while updating Until P 2 Xu
- the timer TE which sets the dwell time T2 of the second dwell stage, is also updated (steps S8 to S1).
- the torque limit value switching pattern (Fig. 6) when shifting to each of the 2nd to 4th dwell stages is different from that of Fig. 5, and that the generated dwell pressure rises. It is set so that it can follow the pattern well at the time of falling and at the time of falling, so that there is no substantial overshoot and undershoot with respect to the torque limit value of the generated holding pressure. .
- step S19 When the fourth pressure-holding stage (generally, the first pressure-holding stage) is completed,-the pressure-holding stage number counter is reset (step S19).
- FIG. 8 to 10 Refer to FIGS. 8 to 10, FIG.
- the multi-stage pressure control method according to the second embodiment will be described with reference to the holding pressure control shown in FIG. 5 as an example.
- the method of this embodiment is different from the method of the above-described embodiment in which a target pressure change pattern that changes linearly from the target pressure at the pressure control stage before the shift to the control stage after the shift is used,
- the multi-stage pressure control is carried out more smoothly by using a pattern in which the change in the target value per unit time at step S gradually approaches zero.
- the method of this embodiment can be executed by the device g shown in FIG.
- the NC CPU 11 stores these parameters in the table TB (Fig. 2).
- the CPU 11 for NC sets the value j of the dwelling stage number counter to ⁇ 1 j (step S101 in FIG.
- the NC CPU 11 determines the current, that is, the number of pressure-holding stages j to be shifted, based on the counter value j. From the RAM TB table TB, the torque limit value P1, the dwell time T1 and the switching time ⁇ 1 at the first dwell stage (in general, the parameter P at the dwell stage after the shift) j, T j, m T j) and read the maximum injection pressure PS (generally Read the torque limit value Pj-1> at the previous pressure-holding stage (step S103). Then, according to a predetermined torque limit value calculation equation, for example, the following equation (1), the torque limit value P in the current holding pressure control operation execution cycle is calculated using the parameter read out as described above (step S1). 1 04) o
- the target pressure in the pressure control stage (specifically, the one corresponding to the maximum injection pressure PS and the torque limit values P1 to P4) is equal to each other, and the transition (0 ⁇ t ⁇ Tj) is the former target pressure. (See Fig. 9 and Fig. 10.)
- the CPU 11 for NC stores the torque limit value P thus obtained in the present cycle in the torque limit value storage area of the RAM I7 (step S105).
- the servo CPU 12 reads this, controls the output torque of the servo motor 1 to the value P, and applies the target holding pressure to the screw 2 in the current cycle.
- the CPU 11 for NC refers to the timer R (t) to determine whether or not the switching time T1 (generally Tj) has elapsed from the start of the transition (step S106). ). If the switching time T 1 has not elapsed, the process of step S 104 is executed to find a new torque limit value P, and
- this output value is updated.
- a loop process including steps S 104 to S 106 is periodically executed.
- the variable t gradually changes, and as a result, the torque limit value that cannot be calculated periodically according to the equation (1) changes stepwise, and substantially, FIG. 9 or FIG. It changes smoothly along the cosine curve (torque limit value switching pattern) shown in.
- the switching pattern specified by the control variable AT j is similar to the pattern shown in FIG. 6, and in view of the response output characteristics of the servo motor 1, the motor can favorably follow this pattern and
- the servo motor 1 and... Screw 2 are set so as not to cause poor tracking due to indignation. Therefore, the dwell pressure actually applied to the screw 2 driven by the servo motor 1 smoothly changes from the value P j — 1 to the value P j, and overshoots or undershoots the switching pattern. None.
- step S106 when it is determined in step S106 that the switching time ⁇ T1 has elapsed, it is repeatedly determined whether or not the pressure holding time T1 in the first pressure holding stage has elapsed (step 107). During this time, the torque limit value is maintained at the value P 1 at the lapse of the switching time T 1, and the actual holding pressure applied to the screw 2 is controlled at the value P 1.
- the torque limit value (target holding pressure) is updated at the first part of the pressure-holding stage to be shifted, but from the last part of the pressure-holding stage before the shift. It may be performed over the first part of the pressure holding stage after the transition.
- the equation (1) including the cosine function using the elapsed time t from the transition start point as a variable is used.
- Various operational expressions of the tie that give a torque limit value such that the height of the change immediately before the completion of the transition or at the time of the completion of the transition gradually approaches “0 j”.
- t is a variable as shown in the following equation (2).
- the torque limit value may be updated using a polynomial expression and a hyperbolic ⁇ expression. The longer the required calculation time for the torque limit value, the more difficult it is to execute smooth multi-stage pressure control. Therefore, a type that can perform high-speed calculations is desirable.
- Equation (3) Differentiate both sides of Equation (2) with the variable t to obtain the following Equation (3).
- the switching of the target holding pressure in the pressure holding step has been described, but the present invention is not limited to this.
- the present invention Of the target injection pressure between the injection pressure control stages, and the switching from the target holding pressure in the final stage of the pressure holding process to the target back pressure in the metering process. Is possible.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019890702040A KR960015301B1 (ko) | 1988-03-08 | 1989-03-07 | 전동식 사출성형기의 압력제어방법 및 그의 장치 |
EP89903255A EP0364599B1 (en) | 1988-03-08 | 1989-03-07 | Method and apparatus for pressure control of an electrically powered injection molding machine |
DE68915384T DE68915384T2 (de) | 1988-03-08 | 1989-03-07 | Verfahren und vorrichtung zur drucksteuerung einer elektrisch angetriebenen spritzgiessmaschine. |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5250088A JPH07115395B2 (ja) | 1988-03-08 | 1988-03-08 | 電動式射出成形機の圧力制御装置 |
JP63/52500 | 1988-03-08 | ||
JP10128588A JP2640666B2 (ja) | 1988-04-26 | 1988-04-26 | 電動式射出成形機の圧力制御方法 |
JP63/101285 | 1988-04-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1989008543A1 true WO1989008543A1 (en) | 1989-09-21 |
Family
ID=26393099
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1989/000244 WO1989008543A1 (en) | 1988-03-08 | 1989-03-07 | Method and apparatus for pressure control of an electrically powered injection molding machine |
Country Status (5)
Country | Link |
---|---|
US (1) | US5030395A (ja) |
EP (1) | EP0364599B1 (ja) |
KR (1) | KR960015301B1 (ja) |
DE (1) | DE68915384T2 (ja) |
WO (1) | WO1989008543A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995018798A1 (en) * | 1994-01-11 | 1995-07-13 | The Scripps Research Institute | Chemical switching of taxo-diterpenoids between low solubility active forms and high solubility inactive forms |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5207964A (en) * | 1991-02-13 | 1993-05-04 | Mauro James J | Method for manufacturing a plastic hollow product using water soluble resin |
JPH0753405B2 (ja) * | 1991-11-28 | 1995-06-07 | 花王株式会社 | 射出成形機における樹脂流動物性変動制御方法および装置 |
US5336073A (en) * | 1992-12-16 | 1994-08-09 | Sumitomo Heavy Industries, Ltd. | Injection pressure limiting device for injection molding machine |
JP3162549B2 (ja) * | 1993-07-08 | 2001-05-08 | ファナック株式会社 | 射出成形機の射出速度編集設定方法 |
US5766526B1 (en) * | 1994-04-20 | 1999-08-24 | Fuji Photo Film Co Ltd | Method and apparatus for injection molding |
US5469038A (en) * | 1994-05-10 | 1995-11-21 | Cincinnati Milacron Inc. | Method for compensating for efficient variations in an electric motor |
US5869108A (en) * | 1997-06-06 | 1999-02-09 | Sumitomo Heavy Industries, Ltd. | Control system for controlling a motor-driven injection molding machine |
JP3423219B2 (ja) * | 1998-06-30 | 2003-07-07 | 株式会社名機製作所 | ディスク基板の射出成形機におけるモニタ方法及び成形作動制御装置 |
JP3408768B2 (ja) * | 1999-01-19 | 2003-05-19 | 東芝機械株式会社 | 射出成形機の電動機制御方法および装置 |
KR20030061618A (ko) * | 2002-01-15 | 2003-07-22 | 엘지전선 주식회사 | 형체 다단 압축 성형 방법 |
US20030160345A1 (en) * | 2002-02-22 | 2003-08-28 | Hsing-Chang Liu | Back pressure control method of injection molding machine driven by servo motor |
TWI232162B (en) * | 2003-04-04 | 2005-05-11 | Sumitomo Heavy Industries | Injection-molding machine and method of controlling injection-molding machine |
US20060082010A1 (en) * | 2004-10-19 | 2006-04-20 | Saggese Stefano M | Intelligent molding environment and method of controlling applied clamp tonnage |
JP4027380B2 (ja) * | 2005-06-02 | 2007-12-26 | ファナック株式会社 | 射出成形機の制御装置 |
JP4038226B2 (ja) * | 2006-02-22 | 2008-01-23 | ファナック株式会社 | 射出成形機の計量方法及び制御装置 |
CN102555180B (zh) * | 2012-02-10 | 2014-01-22 | 浙江大学 | 基于喷嘴压力的注塑机注射保压切换控制系统及方法 |
AT517128B1 (de) * | 2015-05-11 | 2017-11-15 | Engel Austria Gmbh | Bestimmungsverfahren für das Kompressionsverhalten eines formbaren Materials |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61181624A (ja) * | 1985-02-07 | 1986-08-14 | Japan Steel Works Ltd:The | 電動射出成形機の制御装置 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6127229A (ja) * | 1984-07-18 | 1986-02-06 | Nissei Plastics Ind Co | 電動式射出成形機の射出工程制御方法 |
JPS61229523A (ja) * | 1985-04-04 | 1986-10-13 | Mitsubishi Heavy Ind Ltd | 射出圧力の自動監視方法 |
JPS61235119A (ja) * | 1985-04-12 | 1986-10-20 | Nissei Plastics Ind Co | 射出成形機の射出制御方法及び装置 |
JPS6232019A (ja) * | 1985-08-05 | 1987-02-12 | Toyo Kikai Kinzoku Kk | 射出成形機 |
JPS63132021A (ja) * | 1986-11-25 | 1988-06-04 | Japan Steel Works Ltd:The | 射出成形機の保圧制御方法 |
-
1989
- 1989-03-07 WO PCT/JP1989/000244 patent/WO1989008543A1/ja not_active Application Discontinuation
- 1989-03-07 DE DE68915384T patent/DE68915384T2/de not_active Revoked
- 1989-03-07 EP EP89903255A patent/EP0364599B1/en not_active Revoked
- 1989-03-07 KR KR1019890702040A patent/KR960015301B1/ko not_active IP Right Cessation
- 1989-03-07 US US07/425,184 patent/US5030395A/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61181624A (ja) * | 1985-02-07 | 1986-08-14 | Japan Steel Works Ltd:The | 電動射出成形機の制御装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP0364599A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995018798A1 (en) * | 1994-01-11 | 1995-07-13 | The Scripps Research Institute | Chemical switching of taxo-diterpenoids between low solubility active forms and high solubility inactive forms |
Also Published As
Publication number | Publication date |
---|---|
DE68915384T2 (de) | 1994-09-01 |
DE68915384D1 (de) | 1994-06-23 |
KR960015301B1 (ko) | 1996-11-07 |
EP0364599B1 (en) | 1994-05-18 |
KR900700264A (ko) | 1990-08-13 |
US5030395A (en) | 1991-07-09 |
EP0364599A4 (en) | 1991-01-09 |
EP0364599A1 (en) | 1990-04-25 |
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