KR860000137A - Injection molding machine and its control method - Google Patents

Injection molding machine and its control method Download PDF

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Publication number
KR860000137A
KR860000137A KR1019850004522A KR850004522A KR860000137A KR 860000137 A KR860000137 A KR 860000137A KR 1019850004522 A KR1019850004522 A KR 1019850004522A KR 850004522 A KR850004522 A KR 850004522A KR 860000137 A KR860000137 A KR 860000137A
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South Korea
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screw
signal
speed
injection molding
molding machine
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KR1019850004522A
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Korean (ko)
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KR910000288B1 (en
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요시나리 사사끼 (외 3)
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이이무라 가즈오
도시바 기까이 가부시기 가이샤
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    • 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
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/19—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path
    • G05B19/21—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path using an incremental digital measuring device
    • G05B19/23—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path using an incremental digital measuring device for point-to-point control
    • G05B19/231—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path using an incremental digital measuring device for point-to-point control the positional error is used to control continuously the servomotor according to its magnitude
    • G05B19/232—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path using an incremental digital measuring device for point-to-point control the positional error is used to control continuously the servomotor according to its magnitude with speed feedback only
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/41—Servomotor, servo controller till figures
    • G05B2219/41255—Mode switch, select independent or dependent control of axis
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/45—Nc applications
    • G05B2219/45244—Injection molding

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

내용 없음No content

Description

사출 성형기 및 그 제어방법Injection molding machine and its control method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 일반적인 형태의 사출성형기의 개략 종단면도. 제2도는 본 발명에 따르는 사출성형기의 개략 종단면도. 제3도는 본 발명에 따른 사출 성형기용 제어 시스템의 한 실시예를 나타내는 블럭 다이어그램.1 is a schematic longitudinal sectional view of a general type injection molding machine. 2 is a schematic longitudinal sectional view of an injection molding machine according to the invention. 3 is a block diagram showing one embodiment of a control system for an injection molding machine according to the present invention.

*도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1:스크류, 2:가열실린더, 3:호퍼, 4:수지, 5:노즐, 6:용융수지, 7:구동장치, 10:제어기, 11:명령치 연산기, 11A:위치 제어기, 11B:속도 제어기, 12:배압 제어기, 13,16:전력증폭기, 14:감산기, 15:회전수 제어기, 20,21:전기모우터, 22:볼스크류, 23:볼너트, 24:테이블, 25,26:센서, 36,37,41,42,43,44,49,50,50',51,52,53,55,61,62,63:기어 45,46,47,48,60,64:클러치 기구, 20A,21A:회전축, 38,30A,1A,54:구동축, 35,40:케이싱, 48A,4A,30A,38A,38B,48A,54:축, 39:금형고정부재, 42:속도 루우프 이득 발생기, 43:동작 제어시스템, 45:제어기, 50:관축자, 44:이득발생기, 52:운동제어시스템.1: screw, 2: heating cylinder, 3: hopper, 4: resin, 5: nozzle, 6: molten resin, 7: actuator, 10: controller, 11: command value calculator, 11A: position controller, 11B: speed controller 12: back pressure controller, 13, 16: power amplifier, 14: subtractor, 15: speed controller, 20, 21: electric motor, 22: ball screw, 23: ball nut, 24: table, 25, 26: sensor , 36,37,41,42,43,44,49,50,50 ', 51,52,53,55,61,62,63: gear 45,46,47,48,60,64 20A, 21A: rotating shaft, 38, 30A, 1A, 54: driving shaft, 35, 40: casing, 48A, 4A, 30A, 38A, 38B, 48A, 54: shaft, 39: mold fixing member, 42: speed loop gain generator 43: motion control system; 45: controller; 50: tube shaft; 44: gain generator; 52: motion control system.

Claims (19)

비어있는 가열 실린더내에 공급된 수지가 가열 실린더내에서 회전시키고 왕복 운동시키는 스크류에 의하여 가열되게 하고 전진 이동되게 하고, 가열 실린더내에서 용융되고 가소화된 수지가 금형내로 사출되게한 유형의 사출성형기에 있어서, 스크류의 위치에 대한 지령신호를 발생시키는 지령발생수단과, 스크류의 회전수와 스크류의 위치를 검출하여 스크류 회전수 피이드백 신호와 스크류 위치 피이드백 신호를 전송하는 구동축에 작동가능하게 연결된 수단가, 구동 수단과 검출 수단에 작동 가능하게 연결되어 지령신호, 스크류 회전수 피이드백 신호와 스크류 위치 피이드백 신호를 입력으로 하여서, 스크류 회전 신호와 스크류 배압 신호를 발생시켜 구동 수단에 인가하므로 위치 지령 신호와 위치 피이드백 신호간의 편차를 거의 제로(0)로 되게 하는 제어수단 등으로 이루어진 것을 특징으로 하는 사출 성형기.An injection molding machine of the type which allows the resin supplied in an empty heating cylinder to be heated and moved forward by a screw which rotates and reciprocates in the heating cylinder and causes molten and plasticized resin to be injected into the mold in the heating cylinder. And a command generation means for generating a command signal for the position of the screw, and means operatively connected to a drive shaft for detecting the rotational speed of the screw and the position of the screw and transmitting the screw rotational feedback signal and the screw position feedback signal. Is connected to the drive means and the detection means, and receives the command signal, the screw speed feedback signal and the screw position feedback signal as inputs, and generates and applies the screw rotation signal and the screw back pressure signal to the drive means. And the deviation between the position feedback signal and zero Injection molding machine comprising a control means and the like. 제1항에 있어서, 스크류를 회전시키는 제1전기모터와, 스크류를 왕복 운동시키는 제2전기 모터로 구성시킨 구동 수단과, 제1모터에 연결되어 스크류의 회전수를 검출하여 스크류 회전수 피이드백 신호를 발생시키는 제1센서와, 제2모터에 연결되어 스크류의 위치를 검출하고 스크류 위치 피이드백 신호를 발생하는 제2센서로 구성시킨 검출 수단 등을 구비하여서, 스크류 회전 신호를 제1모터에 인가하고 스크류 배압신호를 제2모터에 인가하게 한 것을 특징으로 하는 사출성형기.2. The screw rotational speed feedback according to claim 1, wherein the driving means comprises a first electric motor for rotating the screw, a second electric motor for reciprocating the screw, and a rotational speed of the screw connected to the first motor to detect the rotational speed of the screw. And a detecting means composed of a first sensor generating a signal and a second sensor connected to the second motor to detect the position of the screw and generating the screw position feedback signal. And a screw back pressure signal is applied to the second motor. 제1항에 있어서, 위치 지령 신호와 스크류 위치 피이드백 신호간의 편차 신호를 발생시키는 위치 제어기와, 위치 제어기로 부터 출력 신호에 응답하여 배압 지령과 회전수지령에 관련한 신호를 발생시키는 속도 제어기와, 배압 지령에 응답하여 스크류 배압 신호를 발생시키는 배압제어기와, 회전수 지령신호와 스크류 회전수 피이드백 신호간의 편차신호에 응답하여 스크류 회전수 신호를 발생시키는 회전수 제어기로 이루어진 제어수단을 구비한 것을 특징으로 하는 사출 성형기.2. The control apparatus according to claim 1, further comprising: a position controller for generating a deviation signal between the position command signal and the screw position feedback signal, a speed controller for generating a signal relating to the back pressure command and the rotational speed command in response to an output signal from the position controller; And a control means comprising a back pressure controller for generating a screw back pressure signal in response to a back pressure command, and a speed controller for generating a screw speed signal in response to a deviation signal between the rotation speed command signal and the screw speed feedback signal. Injection molding machine characterized in that. 제2항에 있어서, 제2모터에 작동 가능하게 고정되어 제2모터 구동에 따라 스크류의 왕복 방향과 동일한 방향으로 왕복 운동하는 구동 테이블 상에 고정된 제1모터를 구비한 것을 특징으로 하는 사출 성형기.The injection molding machine according to claim 2, further comprising: a first motor operably fixed to the second motor, the first motor being fixed on a drive table reciprocating in the same direction as the reciprocating direction of the screw in accordance with the second motor drive. . 제4항에 있어서, 제2모터의 구동축에 연결된 볼스크류와 맞물린 볼 너트에 연결되게한 구동 테이블을 구비시켜서 제2모터의 구동에 따라 구동 테이블을 왕복 운동시키게한 것을 특징으로 하는 사출 성형기.5. The injection molding machine according to claim 4, further comprising a drive table which is connected to a ball nut engaged with a ball screw connected to a drive shaft of the second motor to cause the drive table to reciprocate in accordance with the drive of the second motor. 제4항에 있어서, 구동 테이블에 제2센서를 설치한 것을 특징으로 하는 사출 성형기.The injection molding machine according to claim 4, wherein a second sensor is provided on the drive table. 제1항에 있어서, 회전수 지령 신호를 발생시키는 지령 발생수단을 구비하게 한 것을 특징으로 하는 사출 성형기.The injection molding machine as claimed in claim 1, further comprising a command generating means for generating a rotational speed command signal. 제7항에 있어서, 위치 지령 신호와 스크류 위치 피이드백 신호간의 입력 편차 신호에 응답하는 스크류 배압 신호를 발생시키는 배압 제어기와, 회전수 지령 신호와 스크류 회전수 피이드백 신호간의 입력편차신호에 응답하는 스크류 회전수 신호를 발생시키는 회전수 제어기로 이루어진 제어수단을 구비한 것을 특징으로 하는 사출 성형기.8. The method of claim 7, further comprising: a back pressure controller for generating a screw back pressure signal in response to an input deviation signal between the position command signal and the screw position feedback signal, and a response to the input deviation signal between the speed command signal and the screw speed feedback signal; Injection molding machine comprising a control means consisting of a speed controller for generating a screw speed signal. 제8항에 있어서, 회전수 지령 신호를 상수로한 것을 특징으로 하는 사출성형기.The injection molding machine according to claim 8, wherein the rotation speed command signal is a constant. 제1항에 있어서, 지령 발생수단이 스크류 배압 지령신호를 발생시키게 한 것을 특징으로 하는 사출 성형기.The injection molding machine as claimed in claim 1, wherein the command generating means causes the screw back pressure command signal to be generated. 제10항에 있어서, 스크류 배압 지령 신호에 응답하는 스크류 배압 신호를 발생시키는 배압 제어기와, 위치 지령 신호와 스크류 위치 피이드백 신호간의 편차 신호를 입력으로 하는 위치 제어기와, 위치제어기로 부터 출력 신호와 스크류 회전수 피이드백 신호간의 편차 신호에 응답하는 스크류 회전수 신호를 발생시키는 회전수 제어기들로 구성시킨 제어수단을 구비한 것을 특징으로 하는 사출 성형기.11. The apparatus of claim 10, further comprising: a back pressure controller for generating a screw back pressure signal in response to the screw back pressure command signal, a position controller for inputting a deviation signal between the position command signal and the screw position feedback signal, and an output signal from the position controller; An injection molding machine comprising control means composed of rotational speed controllers for generating a screw rotational signal in response to a deviation signal between the screw rotational feedback signals. 제11항에 있어서, 스크류 배압 지령 신호를 상수로 한 것을 특징으로 하는 사출 성형기The injection molding machine according to claim 11, wherein the screw back pressure command signal is a constant. 스크류 속도 지령 신호와 스크류 속도 신호간의 편차신호가 속도 루우프 이득 발생기내에 입력되게 하고, 스크류와 스크류 구동 수단으로 이루어진 동작 제어 시스템이 제어 되게하며, 스크류 속도 지령 신호와 스크류 속도 신호가 이득 발생기에 연결된 어느 적당한 제어기에 입력되게 하는 단계로 이루어진 사출 성형장치를 제어하는 방법에 있어서, 스크류 속도 신호가 입력되는 이득 발생기로 부터 출력을 스크류 속도 지령에 가산하는 단계와, 첫번째 단계의 가산 결과에 따라 스크류 속도 제어 신호를 발생시키는 단계와, 어느 적당한 제어기로 부터의 출력 신호에 응답하는 이득 발생기에 대하여 가변이득을 갖게 하는 단계로 이루어진 것을 특징으로 하는 사출 성형기를 제어하는 방법.The deviation signal between the screw speed command signal and the screw speed signal is input into the speed loop gain generator, the motion control system consisting of the screw and the screw drive means is controlled, and the screw speed command signal and the screw speed signal are connected to the gain generator. A method of controlling an injection molding apparatus comprising inputting to an appropriate controller, the method comprising: adding an output to a screw speed command from a gain generator to which a screw speed signal is input, and controlling the screw speed according to the addition result of the first step Generating a signal and having a variable gain for a gain generator responsive to an output signal from any suitable controller. 제13항에 있어서, 이득 발생기의 이득 k를 K=ΔD/G로 결정하고 문자 D를 사출 성형장치내로 공급한 수지의 점성계수로 하며, ΔD를 점성계수 D의 변수로 하고 문자 G를 속도루우프 이득 발생기의 이득으로 한 것을 특징으로 하는 사출 성형기의 제어 방법.The method of claim 13, wherein the gain k of the gain generator is determined as K = ΔD / G, the letter D is the viscosity coefficient of the resin supplied into the injection molding apparatus, ΔD is a variable of the viscosity coefficient D, and the letter G is a speed loop. The control method of the injection molding machine characterized by the gain of the gain generator. 제14항에 있어서, 점성 계수 D를 속도 입력의 단계응답에 의하여 구한 것을 특징으로 하는 사출성형기의 제어방법.The control method of an injection molding machine as claimed in claim 14, wherein the viscosity coefficient D is obtained by step response of speed input. 제14항에 있어서, 변수 ΔD를 사출성형기의 작동개시 시간대에 속도 입력의 단계응답에 의하여 수지의 점성계수를 구하고 소정 시간의 경과후 수지의 점성 계수를 다시 구하므로 얻어지게한 것을 특징으로 하는 사출 성형기의 제어방법.15. The injection molding method according to claim 14, wherein the variable ΔD is obtained by obtaining the viscosity coefficient of the resin by the step response of the speed input at the start time of operation of the injection molding machine, and obtaining the viscosity coefficient of the resin again after a predetermined time elapses. Control method of molding machine. 스크류 속도 지령 신호와 스크류 속도 신호간의 편차신호를 입력을 하는 속도 루우프 이득 발생기를 구비한 속도 제어 시스템과, 스크류와 스크류 구동 수단으로 이루어지 제어되는 동작 제어 시스템과 이득 발생기로 구성시킨 유형의 사출 성형기를 수지 측정 처리시 제어하는 방법에 있어서, 감시수단이 속도 제어 시스템의 전기적 특성과 동일한 특성을 가지게 하여 스크류속도 지령을 입력으로 하는 단계와, 스크류속도 신호와 감시 수단으로부터 출력 신호간의 편차로 상수를 배가하는 단계와, 배가된 출력과 스크류 속도 지령간의 편차를 구하는 단계와, 상기 단계들에 의하여 구해진 편차를 스크류 속도 제어 신호로써 사용하는 단계들로 이루어진 것을 특징으로 하는 사출 성형 장치를 수지 측정시 제어하는 방법.An injection molding machine of the type consisting of a speed control system having a speed loop gain generator for inputting a deviation signal between the screw speed command signal and the screw speed signal, a motion control system controlled by a screw and screw drive means, and a gain generator In the method of controlling during the resin measurement process, the step of monitoring means has the same characteristics as the electrical characteristics of the speed control system to input the screw speed command, and the constant is determined by the deviation between the screw speed signal and the output signal from the monitoring means. Multiplying, obtaining a deviation between the doubled output and the screw speed command, and using the deviation obtained by the above steps as a screw speed control signal. How to. 제17항에 있어서, 감시 수단이 아날로그 연산기로 구성되게 한 것을 특징으로 하는 사출성형 장치를 수지 측정시 제어하는 방법.18. The method according to claim 17, wherein the monitoring means is constituted by an analog calculator. 제17항에 있어서, 감시 수단을 디지틀 컴퓨터로 구성되게 한 것을 특징으로 하는 사출 성형 장치를 수지 측정시 제어하는 방법.18. The method according to claim 17, wherein the monitoring means is constituted by a digital computer. ※ 참고사항 : 최초출원내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019850004522A 1984-06-25 1985-06-25 Injection molding machines and methods for controlling the same KR910000288B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP59130786A JPS6110425A (en) 1984-06-25 1984-06-25 Injection molding machine
JP84-130786 1984-06-25
JP130787 1984-06-25
JP130786 1984-06-25
JP130788 1984-06-25

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KR860000137A true KR860000137A (en) 1986-01-25
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JPS6161818A (en) * 1984-09-04 1986-03-29 Fanuc Ltd Control system of rotation of screw in injection molding machine
JP2857925B2 (en) * 1990-10-09 1999-02-17 住友重機械工業株式会社 In-line screw injection molding machine
JPH0564832A (en) * 1991-09-06 1993-03-19 Kobe Steel Ltd Measuring method and its device for injected resin
JP3766371B2 (en) * 2002-11-05 2006-04-12 ファナック株式会社 Measuring method and control device for injection molding machine
JP3649714B2 (en) 2002-11-05 2005-05-18 ファナック株式会社 Control device for injection molding machine
JP3652681B2 (en) 2002-11-08 2005-05-25 ファナック株式会社 Metering method and control device in injection molding machine

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