EP2043835A1 - Steuerungsverfahren für eine kunststoffspritzgiessmaschine zum ausgleich von chargenschwankungen - Google Patents
Steuerungsverfahren für eine kunststoffspritzgiessmaschine zum ausgleich von chargenschwankungenInfo
- Publication number
- EP2043835A1 EP2043835A1 EP08786513A EP08786513A EP2043835A1 EP 2043835 A1 EP2043835 A1 EP 2043835A1 EP 08786513 A EP08786513 A EP 08786513A EP 08786513 A EP08786513 A EP 08786513A EP 2043835 A1 EP2043835 A1 EP 2043835A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- control method
- plasticizing
- switching time
- dependence
- plastic injection
- 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.)
- Withdrawn
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
- B29C45/7613—Measuring, controlling or regulating the termination of flow of material into the mould
-
- 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
- B29C45/7646—Measuring, controlling or regulating viscosity
-
- 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
- B29C45/7666—Measuring, controlling or regulating of power or energy, e.g. integral function of force
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76003—Measured parameter
- B29C2945/7602—Torque
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76003—Measured parameter
- B29C2945/76026—Energy, power
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76003—Measured parameter
- B29C2945/7611—Velocity
- B29C2945/7612—Velocity rotational movement
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76344—Phase or stage of measurement
- B29C2945/76367—Metering
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76498—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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76551—Time
- B29C2945/76555—Time start
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76551—Time
- B29C2945/76561—Time duration
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76655—Location of control
- B29C2945/76658—Injection unit
- B29C2945/76692—Injection unit drive means
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76822—Phase or stage of control
- B29C2945/76862—Holding, dwelling
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76822—Phase or stage of control
- B29C2945/76876—Switch-over
- B29C2945/76879—Switch-over metering-injection
Definitions
- the invention relates to a control method for a plastic injection molding machine for balancing the batch fluctuations, which has a controller that allows adjustment of at least the screw speed, the Nachtikière and the Nachbuchdauer and the Umschaltzeithuis and provides appropriate data.
- Repressive phase passes, so that it is difficult to determine this size accurately, and thus this turns out to be less than optimal.
- Plasticizing work is determined and this as a guide to change the settings of the
- Plastic injection molding machine is used, a reliable quality control can be achieved.
- the plasticizing work in the injection molding cycle is earlier
- the plasticizing work is suitable as a measure of the viscosity, it being assumed that the viscosity over time is proportional to the plasticizing work.
- Wp] _ as supplied plasticizing work; ⁇ as viscosity;
- V as the volume of the worm antechamber
- plasticizing work in modern all-electric injection molding machines can be determined in a simple manner (see above).
- the plasticizing work can be monitored and used as an indication of the expected quality of the molding, as this size has been found to be proportional to the viscosity (see above). It is also proposed within the scope of the invention to create a model for controlling the machine, in which the determination of the switching time or the high pressure is carried out from the plasticizing work determined with optimum quality of the molded part.
- this dependence can be used to control the machine, so when monitoring the plasticizing the dependence on the setting of the switching time.
- a dependency of the high pressure is determined by the plasticizing and this used in monitoring the plasticizing work to adjust the high pressure.
- Plasticizing work e.g. can be determined via an empirical variation of the switching time point or the postpressure height per batch and statistical evaluation.
- Control determines, if necessary, as an average of several injection molding cycles for different batches.
- an optimum quality of the molding is monitored, e.g. determined by its weight, and the most favorable value or value at the best quality.
- the switching time and the pressure high can be determined by a regression calculation, eg linear least squares or by quadratic approximation, a dependency of the switchover time and the head of gravity can be determined by the plasticizing work.
- the model thus obtained can in turn be deposited for control in injection molding machines, so that when monitoring the plasticizing, z.
- the optimal process variables of the switching time and the pressure head are set on the deposited dependencies.
- This model can be stored in the control in the manner of a model function, possibly with interpolated intermediate values, eg. B. about series developments.
- a plastic injection molding machine 1 is controlled by a controller 2 according to FIG.
- the snail 3 is from a
- Electric motor 5 turned. It conveys unrepresented granules, which is supplied via a funnel 6, into a screw antechamber 7.
- the granules are heated by means of the heater 4 and by the frictional heat of the screw rotation and thereby heated and plasticized.
- the plasticized granules are then conveyed by means of the screw 3 from the screw antechamber 7 in an injection mold 8.
- the screw 3 is moved by means of a feed drive 9 in the axial direction. Then, the cooling and solidification of the plasticized granules in the
- Injection mold 8 waited. Thereafter, the above-described sequence of steps is repeated.
- the controller 2 controls the entire injection molding process described above. These are in the controller
- a control program 10 on the one hand a control program 10 and on the other a model 11 stored. From the detected via suitable sensors 12 on the electric motor screw speed n and the motor torque M, the controller then calculates the plasticizing W PL . The model 11 then maps these to the setting values of the switching time U and the pressure head N, which are then used by the control program in the same injection molding cycle for the machine setting.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200710035804 DE102007035804B3 (de) | 2007-07-31 | 2007-07-31 | Steuerungsverfahren für eine Kunststoffspritzgießmaschine zum Ausgleich von Chargenschwankungen |
| PCT/EP2008/059872 WO2009016150A1 (de) | 2007-07-31 | 2008-07-28 | Steuerungsverfahren für eine kunststoffspritzgiessmaschine zum ausgleich von chargenschwankungen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2043835A1 true EP2043835A1 (de) | 2009-04-08 |
Family
ID=40084372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08786513A Withdrawn EP2043835A1 (de) | 2007-07-31 | 2008-07-28 | Steuerungsverfahren für eine kunststoffspritzgiessmaschine zum ausgleich von chargenschwankungen |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2043835A1 (de) |
| DE (1) | DE102007035804B3 (de) |
| WO (1) | WO2009016150A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113352570B (zh) * | 2021-06-04 | 2022-11-04 | 华北电力大学 | 基于迭代学习模型预测控制的注塑机注射速度控制方法 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT381670B (de) * | 1985-03-08 | 1986-11-10 | Engel Kg L | Verfahren zur kontrolle des formfuellvorganges einer kunststoff-spritzgiesseinrichtung |
| DE4011230A1 (de) * | 1990-04-06 | 1991-10-10 | Ibos Qualitaetssicherung | Verfahren und vorrichtung zur optimierung der schneckenvorlaufgeschwindigkeit beim umschalten zwischen einspritzphase und nachdruckphase beim spritzgiessen |
| DE102005015491B4 (de) * | 2005-04-05 | 2006-12-07 | Battenfeld Gmbh | Spritzgiessverfahren |
| JP4864398B2 (ja) | 2005-09-16 | 2012-02-01 | 住友重機械工業株式会社 | 成形機及び可塑化状態監視方法 |
-
2007
- 2007-07-31 DE DE200710035804 patent/DE102007035804B3/de not_active Expired - Fee Related
-
2008
- 2008-07-28 EP EP08786513A patent/EP2043835A1/de not_active Withdrawn
- 2008-07-28 WO PCT/EP2008/059872 patent/WO2009016150A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2009016150A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102007035804B3 (de) | 2009-05-20 |
| WO2009016150A1 (de) | 2009-02-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20090122 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR |
|
| AX | Request for extension of the european patent |
Extension state: AL BA MK RS |
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| 17Q | First examination report despatched |
Effective date: 20100308 |
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| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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| 18D | Application deemed to be withdrawn |
Effective date: 20120125 |