CN102529054B - Control and / or regulation device for controlling and / or regulating injection worm of die casting machine - Google Patents
Control and / or regulation device for controlling and / or regulating injection worm of die casting machine Download PDFInfo
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- CN102529054B CN102529054B CN201110400524.6A CN201110400524A CN102529054B CN 102529054 B CN102529054 B CN 102529054B CN 201110400524 A CN201110400524 A CN 201110400524A CN 102529054 B CN102529054 B CN 102529054B
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- 238000002347 injection Methods 0.000 title claims abstract description 95
- 239000007924 injection Substances 0.000 title claims abstract description 95
- 238000004512 die casting Methods 0.000 title claims abstract description 22
- 230000001276 controlling effect Effects 0.000 title claims abstract description 17
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 12
- 229920003023 plastic Polymers 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 23
- 230000008569 process Effects 0.000 claims description 14
- 230000008859 change Effects 0.000 claims description 12
- 230000006870 function Effects 0.000 claims description 3
- 230000006399 behavior Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 238000005266 casting Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 229920000426 Microplastic Polymers 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005429 filling process Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Classifications
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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
-
- 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
- B29C2945/76006—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
- B29C2945/76003—Measured parameter
- B29C2945/76013—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
- 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
- B29C2945/76177—Location of measurement
- B29C2945/7618—Injection unit
- B29C2945/76187—Injection unit screw
-
- 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
- B29C2945/76397—Switch-over
- B29C2945/76404—Switch-over injection-holding
-
- 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
- B29C2945/76595—Velocity
- B29C2945/76598—Velocity linear 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
- B29C2945/76655—Location of control
- B29C2945/76658—Injection unit
- B29C2945/76665—Injection unit screw
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention provides a control and / or regulation device (1) for controlling and / or regulating the injection worm (2) of a die casting machine (3), which at least comprises a control and regulation unit (4) used for controlling and / or regulating the pressure (p) and / or the speed (q) of the injection worm (2), and a pressure estimator (5) used for estimating the pressure (p ') of the injection worm (2), wherein a load estimator (6) for estimating the load (k') of the injection worm counteracted on the injection worm is provided. Through the load estimator (6), the estimated load (k ') is reported at least to the control and regulation unit (4).
Description
Technical Field
The invention relates to an actuating and/or control device for actuating and/or controlling an injection worm (Einsprintzschnecke) of a die casting machine (Spritzgie β maschene), comprising at least one actuating and/or control unit for actuating and/or controlling the pressure and/or the speed of the injection worm and a pressure estimator for estimating the injection worm pressure.
Background
Plastic granules are generally injected into the injection worm of a die casting machine during the die casting process. The injection worm is located in the worm cylinder and the plastic granules are conveyed by the rotational movement of the injection worm in the direction of the tip of the injection worm to the respective front chamber of the worm cylinder. The plastic particles are melted into a plastic melt by friction and corresponding heating devices. The molten plastic collects in the front chamber of the worm shaft in front of the tip of the injection worm. When a plastic melt sufficient for a shot is located in the antechamber, the injection worm is pushed forward in the direction of the tip of the injection worm in the manner of a piston, so that the plastic melt can be injected into the corresponding mold. Such a mold is also referred to as a shaping tool or a shaping cavity and may consist, for example, of two mold parts which are completed before the injection process.
The rotary movement and the forward movement of the injection worm can be realized, for example, by means of an electric or hydraulic drive. The drive means can be operated or controlled by corresponding operating and/or control means having speed and/or displacement and/or pressure control functions. The speed of the forward movement of the injection worm along the injection axis (injection speed) is typically controlled in such a way that a specific pressure of the injection worm acting as a piston on the plastic melt is not exceeded. This pressure, also referred to as the injection pressure, can be generated by the force of the drive means acting on the injection worm for carrying out its forward movement.
The injection worm moves against a so-called load corresponding to the current filling resistance or the conductance of the casting channel (leittert) in the molding chamber during the entire injection process. The magnitude of the load is furthermore dependent on the mold used or the geometry along the casting channel, the viscosity of the plastic melt during injection and other influencing factors such as the temperature along the casting channel.
After the mold is completely filled with the plastic melt by the forward movement of the injection worm, there is a rapid pressure rise in the mold, which is also influenced by the compressibility of the plastic melt. The speed control of the injection worm is typically switched to pressure control when this rapid pressure rise is recognized. In this first control phase, the speed of the injection worm in this phase of the injection process is controlled, also often referred to as volume flow control, since the speed of the forward movement of the injection worm corresponds to the volume flow of the plastic melt in the respective worm cylinder. The second phase of the control, in which the pressure of the injection worm acting on the plastic melt is mainly controlled, is also often referred to as the pressurization phase. This pressurization phase is particularly important since the cooling volume of the plastic melt in the mold can be correspondingly reduced, by means of which the plastic melt can be pressed further into the mold.
During the die casting process, as far as possible, no pressure drops or pressure peaks occur during the switching from speed control to pressure control, since this can have a negative effect on the quality of the produced die castings. A pressure estimator can therefore be used to estimate the occurring pressure and thus to achieve a precise switching (see for example DE 102004051109B 4). Conventional pressure estimators, however, do not contain information about the material of the mold used or the plastic melt used. In particular, it also does not contain information about the load characteristics which are mainly determined by the material of the mold and the plastic melt. Nevertheless, efforts are being made to keep the speed and/or pressure variations in the die casting process, also often referred to as injection (Schuss), independent of the desired nominal variations that the mould and the material always follow. Current controllers often employ methods that incorporate implicit system behavior assumptions to achieve dynamic control. However, when deviations from the assumed system behavior occur, this sometimes results in large deviations from the setpoint values for pressure and speed or inconsistent signal changes.
Disclosure of Invention
The object of the present invention is to avoid the disadvantages described above and to provide an actuating and/or control device for actuating and/or controlling an injection worm of a die casting machine that is improved over the prior art. The object is a control and/or regulating device which can control both the speed and the pressure of the injection worm and which can in particular control the load changes which occur in the transition from speed control to pressure control.
According to the invention, the object is achieved in that a load estimator for estimating the load acting in the reverse direction (entgegeniwirken) on the injection worm is provided, wherein the load estimated by the load estimator can be communicated at least to the control and/or regulating unit. In this case, the control and/or operating unit ideally contains at least a pilot control device and a controller and the estimated load can relate to the current load and/or the future load.
The load is largely determined by the material of the mold and the plastic melt. In particular the mould may vary widely depending on the application. The control behavior will vary depending on the application. The influence of this variation should be calculated by means of a load estimator, whereby the steering and/or control unit can be adjusted to suit the actual system behavior.
Early identification of load changes may be performed by the load estimator. Wherein the estimation of the load currently and/or in the future acting against the injection worm can be carried out on the basis of a model. With this additional information-the estimated load behavior-the pressure generated by the injection worm can be reduced, for example, early enough to avoid pressure peaks. The jerk-free variation of the injection worm pressure can be achieved on the basis of the estimated load independently of the point in time and the state of the switch from the injection phase to the charging phase. In this case, good follow-up behavior in the dynamic transition from the speed control injection to the supercharging region can be achieved by ascertaining the rapidly changing load with the load estimator and compensating for this effect, for example, with a pilot control device, independently of the current operating time.
Wherein the estimated load can be represented by the estimated resistance coefficient k'. The estimated resistance coefficient k' corresponds to the estimated resistance of the filling process, which is influenced numerically by the mold design or the geometry along the plastic melt flow path and the material used for the plastic melt. For example, the longer the flow path of the plastic melt and the higher the viscosity of the plastic melt, the higher the resistance of the filling process.
A simplified load model can be used to calculate the estimated drag coefficient k', which also contains the following parameters: the cross-sectional area of the worm cylinder, the moment of inertia of the drive, the compressibility and the volume and viscosity of the plastic melt. The compressibility of the plastic melt can be calculated on the basis of the material data, assuming it is known or measured.
The relationship between injection speed, injection pressure and manipulated variables can be established by means of a load model. The load estimator can calculate the model parameters or model values, which are usually unknown and dependent on the application, and estimate the current and/or future load at any time. By knowing the estimated load, the manipulated variable can be calculated with the presetting device, with the respective setpoint value predefined. Therefore, under an ideal model, the actual variable can follow the rated variable, and deviation can not occur. Model-based is simply a simplification of real systems and the reality of deviations of the estimated and actual loads, small deviations between the nominal and actual variables are common. This error can be compensated for by an additional controller. Knowledge of the estimated load is a significant improvement over conventional controllers that do not include a load estimator or do not include model information, which can only change the manipulated variables based on control differences.
The load model can be used in the load estimator, for example, to continuously calculate the current load during the die casting process. This form of use of the load estimator is referred to as an online-estimator. Here the load is continuously re-estimated in each injection cycle and used for the pilot-tuning device. Since the injection process is a cyclic process, it is possible to use the information of the previous injection cycle for the current injection cycle in order to improve the follow-up behavior of the control and/or regulating device. For this purpose, the load estimator can be used as a recursive estimator, by means of which a part of the manipulated variables and their errors can be calculated on the basis of the manipulated variables of the preceding injection cycle. The load model based on this estimate will also improve with each injection. Generally, the previous input values and states are weighted accordingly during the weighted integration and then enter the load estimation. However, the calculation of the estimated load or the estimated change in the load during the injection molding process can also be carried out theoretically by one or more test injections. In which the corresponding values to be used in the following injection cycle can be calculated during the start-up phase. A least squares difference method may also be generally employed for determining suitable coefficients or regression lines for the load estimator.
The following parameters can be used as operating and/or control devices: weighting of the velocity error, weighting of the pressure error, initial values of the load estimator, influence of the pressure control error on the dynamics of the load estimator, influence of the pressure estimation error on the dynamics of the load estimator and influence of the pressure estimation error on the dynamics of the pressure estimator.
According to a preferred embodiment, the estimated pressure can be communicated to the load estimator. If in addition the estimated load can also be communicated to the pressure estimator, the two estimators used will have an optimum synergistic effect. The combination of the load estimator and the pressure estimator results in improved performance relative to independent load estimates. So that estimation errors can be reduced and start-up dynamics can be improved. Whereby the overall control performance can be further improved. Wherein a deviation between the actual load and the estimated load results in a deviation of the measured pressure and the estimated pressure. The load estimator can be modified by returning the error. The deviation between the actual load and the load estimator without an additional pressure estimator is first calculated and corrected from the deviation between the nominal pressure and the actual pressure.
In order to provide corresponding command parameters for the operating and/or control devicePlanning means may be provided, by whichIn order to feed at least the planned setpoint pressure change and/or the planned setpoint speed change, which can preferably be stored in a memory, into the control and/or control unit and/or the load estimator. This planning device is also referred to as a track planning and provides the desired setpoint pressure change and/or the desired setpoint speed change during the injection molding process. Wherein the input of the desired setpoint change can be effected, for example, via a user interface and the setpoint change can be stored in a memory and read by the operating and/or control device.
In order to improve the actuation and/or control behavior of the actuation and/or control device, a pressure measuring device for measuring the injection worm pressure can be provided, wherein signals of the pressure measuring device can be supplied to the actuation and/or control unit and/or the pressure estimator and/or the load estimator. The pressure inside the moulding tool can be measured, for example, by means of a pressure measuring device.
In addition, a speed measuring device for measuring the speed of the injection worm can be provided, wherein the signal of the speed measuring device can be supplied at least to the control and/or control unit and/or to the pressure estimator and/or to the load estimator. The forward speed of the injection worm in the direction of the injection axis corresponds to a specific volume flow of the plastic melt in the worm column.
Alternatively or additionally, a path measuring device for measuring the path traveled by the injection worm can be provided, wherein the signals of the path measuring device can be fed at least to the actuation and/or control unit and/or to the pressure estimator and/or to the load estimator.
If the control and/or control unit comprises at least one pilot control device and one control device, it can be provided that a first controlled variable, preferably a first force value, can be provided by the pilot control device and a second controlled variable, preferably a second force value, can be provided by the control device. The first control variable and the second control variable, preferably the first force value and the second force value, can preferably be added together for controlling and/or controlling the pressure and/or the speed of the injection worm. The pilot control device can be calculated such that the first control variable corresponds to a desired setpoint pressure change that can be specified by a corresponding planning device (rail plan). Wherein the deviation of the actual trajectory from the desired setpoint pressure variation can be adjusted by the controller in the form of a second control variable. The two control variables, which may be, for example, the first force value and the second force value, may be added together and provide a resultant force value with which the drive of the injection worm is to act on the injection worm in the forward movement direction of the injection worm in order to achieve a desired speed and/or a desired pressure of the injection worm on the plastic melt. The control variable in the form of a force value can be supplied to a corresponding control device, for example an engine, for actuation and/or control, wherein the control device can actuate and/or control a corresponding drive unit, for example an electric motor. The electric motor can drive the injection worm in a subsequent movement, which can cause the injection worm to exert a desired pressure on the plastic melt.
A die casting machine having the above-described operating and/or control device is also claimed.
In addition, a method for controlling and/or regulating the pressure and/or speed of an injection worm of a die casting machine is claimed, wherein a plastic melt is injected into a mold by means of the injection worm during a die casting process, wherein a load acts in the opposite direction to the die casting process, characterized in that the pressure and/or speed of the injection worm is controlled and/or regulated as a function of the estimated pressure and the estimated load.
In the method for controlling and/or controlling the pressure and/or speed of the injection worm of a die casting machine described above, the load is estimated using at least the planned setpoint pressure change and/or the current pressure and/or the estimated pressure and/or the planned setpoint speed change and/or the current speed.
Further, it is set that: the pressure is estimated using at least the current pressure of the injection worm and/or the current speed of the injection worm and/or the estimated load.
Drawings
The invention will be further explained in connection with preferred embodiments with reference to the sole drawing. Wherein,
fig. 1 schematically shows a block diagram of an embodiment of the proposed steering and/or control device 1.
Detailed Description
The operating and/or control device 1 comprises an operating and/or control unit 4, which in this example comprises a presetting device 10 and a control 11. The control and/or regulation device 1 further comprises a pressure estimator 5 for estimating the pressure p 'and a load estimator 6 for estimating the load, which in this example is represented by the estimated resistance coefficient k'.
The presetting device 10 gives a first force value F in the form of a first force value1As an output value and the controller 11 gives a second force value F in the form of a2As an output value. First force value F1And a second force value F2The sum obtained by the addition provides the control variable for the control means 13 in the form of a force value F. The control means 13 can be, for example, an engine control and/or control which controls and/or controls a corresponding drive unit 14, for example one or more electric motors, which drives the injection worm 2.
During the die casting process, the plastic melt can be introduced into the die 12 by means of the injection worm 2. A predetermined pressure measuring device 8 and a predetermined speed measuring device 9 measure the current pressure p and the current speed q of the injection worm 2 and can feed these measured values back as control variables at least into the control and/or regulating device 1. In the example shown, the measurement data of the pressure measuring device 8 and the measurement data of the speed measuring device 9 are also fed into the pressure estimator 5 and the load estimator 6. Furthermore, a path measuring device can be provided which measures the path traveled by the injection worm 2, the measurement data of which can be fed at least into the control and/or regulation unit 4 and/or the load estimator 6 and/or the pressure estimator 5.
Setting rated pressure transformerChemical formula psAnd/or rated speed variation qs(and in the given case the first and second derivatives thereof with respect to time) as command parameters for the control and/or regulation device 1, which can be given by a corresponding planning device 7 (orbit planning). The pressure estimator 5 gives the estimated pressure p' as an output value, which can be transmitted to the load estimator 6. The load estimator 6 gives as an output value an estimated resistance coefficient k', which in this case can be transmitted both to the steering and/or control unit 4 and to the pressure estimator 5.
The values k 'and p' represent the output values of the dynamic system (load estimator 6 and pressure estimator 5), wherein from each value of each initial state and input value a respective subsequent state and output value can be calculated. The dynamic system is designed in such a way that the load is calculated according to a predetermined load model.
The control device 13 can be actuated and/or controlled by the actuation and/or control device 1 in such a way that the drive unit 14 actuated and/or controlled by the control device 13 can exert a desired force F on the injection worm 2 in its forward movement direction, so that a desired speed q of the injection worm 2 acting on the plastic melt and/or a desired pressure p of the injection worm 2 can be achieved according to an orbital schedule.
The essential advantage of the proposed control and/or regulation device is the combination of a corresponding setpoint value generation (track planning) with a load estimator and a model-based control with an integrated pilot control. In particular, in the case of dynamic setpoint value changes in the charging region, good follow-up behavior in the charging region is achieved by means of the load estimator and the presetting device independently of the current operating point.
Claims (18)
1. An operating and/or control device (1) for operating and/or controlling an injection worm (2) of a die casting machine (3), comprising at least:
-an operating and/or control unit (4) for operating and/or controlling the pressure (p) and/or the speed (q) of the injection worm (2), and
-a pressure estimator (5) for estimating the pressure (p') of the injection worm (2),
characterized in that a load estimator (6) is provided for estimating the load acting in the opposite direction on the injection worm, wherein the estimated load (k') can be communicated at least to the control and/or regulating unit (4) by means of the load estimator (6).
2. An operating and/or control device according to claim 1, characterised in that the estimated pressure (p') can be communicated to the load estimator (6).
3. An operating and/or control device according to claim 1 or 2, characterised in that the estimated load can also be communicated to the pressure estimator (5).
4. An operating and/or control device according to claim 3, characterised in that a planning device (7) is provided, wherein the planned setpoint pressure can be varied (p) by means of the planning device (7)s) And/or planned rated speed variation (q)s) At least into the control and/or steering unit (4) and/or the load estimator (6).
5. Operating and/or control device according to claim 4, characterised in that the planned nominal pressure variation (p)s) And/or planned rated speed variation (q)s) Can be stored in memory.
6. Operating and/or control device according to claim 4 or 5, characterised in that a pressure measuring device (8) is provided for measuring the pressure (p) of the injection worm (2), wherein signals of the pressure measuring device (8) can be fed into the operating and/or control unit (4) and/or the pressure estimator (5) and/or the load estimator (6).
7. The control and/or operating device according to claim 6, characterized in that a speed measuring device (9) is provided for measuring the speed (q) of the injection worm (2), wherein a signal of the speed measuring device (9) can be fed at least into the control and/or operating unit (4) and/or the load estimator (6) and/or the pressure estimator (5).
8. The control and/or operating device according to claim 1 or 2, characterized in that a path measuring device is provided for measuring the path traveled by the injection worm (2), wherein the signals of the path measuring device can be fed at least into the control and/or operating unit (4) and/or the load estimator (6) and/or the pressure estimator (5).
9. The steering and/or control device according to claim 1 or 2, characterized in that the steering and/or control unit (4) comprises at least a preset device (10) and a controller (11).
10. An operating and/or control device according to claim 9, characterised in that the first control variable can be given by the presetting device (10) and the second control variable can be given by the controller (11).
11. The steering and/or control device according to claim 10, characterized in that the first control variable is a first force value (F)1) The second control variable is a second force value (F)2)。
12. The control and/or regulation device according to claim 10 or 11, characterized in that the first control variable and the second control variable are added to control and/or regulate the pressure (p) and/or the speed (q) of the injection worm (2).
13. A die casting machine having an operating and/or control device as claimed in any one of claims 1 to 12.
14. A method for controlling and/or regulating the pressure (p) and/or the speed (q) of an injection worm (2) of a die casting machine (3), wherein a plastic melt is injected into a mold (12) by means of the injection worm (2) during a die casting process, wherein a load acts in the opposite direction to the die casting process, characterized in that the pressure (p) and/or the speed (q) of the injection worm (2) is controlled and/or regulated as a function of an estimated pressure (p') and an estimated load.
15. Method according to claim 14, characterized in that the planned nominal pressure variation (p) is useds) And/or planned rated speed variation (q)s) As command parameters for controlling and/or controlling the pressure (p) and/or the speed (q) of the injection worm (2).
16. Method according to claim 15, characterized in that at least the planned nominal pressure variation (p) is useds) And/or the current pressure (p) and/or the estimated pressure (p') and/or the planned setpoint speed change (q)s) And/or the current speed (q) to estimate the load.
17. Method according to one of claims 14 to 16, characterized in that the pressure (p') is estimated using at least the current pressure (p) of the injection worm (2) and/or the current speed (q) of the injection worm (2) and/or the estimated load.
18. Method according to claim 17, characterized in that the force (F) exerted on the injection worm (2) in the direction of forward movement of the injection worm (2) to press the plastic melt into the mold (12) is calculated as a control variable to manipulate and/or control the pressure (p) and/or the speed (q) of the injection worm (2).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT21442010A AT510879B1 (en) | 2010-12-27 | 2010-12-27 | CONTROL AND / OR CONTROL DEVICE FOR CONTROLLING AND / OR REGULATING AN INJECTION PUNCH OF AN INJECTION MOLDING MACHINE |
| ATA2144/2010 | 2010-12-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102529054A CN102529054A (en) | 2012-07-04 |
| CN102529054B true CN102529054B (en) | 2015-01-21 |
Family
ID=46337691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110400524.6A Active CN102529054B (en) | 2010-12-27 | 2011-12-06 | Control and / or regulation device for controlling and / or regulating injection worm of die casting machine |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN102529054B (en) |
| AT (1) | AT510879B1 (en) |
| DE (1) | DE102011116868A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| AT514232B1 (en) | 2013-04-18 | 2015-04-15 | Engel Austria Gmbh | Method for controlling or regulating an injection molding machine |
| AT516879B1 (en) * | 2015-02-16 | 2018-02-15 | Engel Austria Gmbh | Method for operating an injection unit and injection unit |
| AT526618A1 (en) | 2022-10-19 | 2024-05-15 | Plastic Innovation Gmbh | Method and device for producing a hollow-walled component |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1106736A (en) * | 1993-10-27 | 1995-08-16 | 普罗控制公开股份有限公司 | Servo-gearshift, method and turning means used in die casting machine |
| CN1316322A (en) * | 2000-04-04 | 2001-10-10 | 住友重机械工业株式会社 | Injection method of injection machine and its control system |
| CN1778495A (en) * | 2004-11-24 | 2006-05-31 | Ykk株式会社 | Motor drive injection unit, die cast machine having the unit, and motor drive injection method |
| CN101402245A (en) * | 2007-10-02 | 2009-04-08 | 日精树脂工业株式会社 | Controller of injection molding machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6682669B2 (en) * | 2001-09-29 | 2004-01-27 | Van Dorn Demag Corporation | Model predictive control apparatus and methods for motion and/or pressure control of injection molding machines |
| DE102004051109B4 (en) | 2004-10-19 | 2007-01-18 | Siemens Ag | Method for operating an injection molding machine |
| JP4022646B2 (en) * | 2004-11-19 | 2007-12-19 | 株式会社ニイガタマシンテクノ | Pressure control device using servo motor |
| JP3724504B1 (en) * | 2005-03-16 | 2005-12-07 | 宇部興産機械株式会社 | Pressure control method and apparatus for electric injection molding machine |
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2010
- 2010-12-27 AT AT21442010A patent/AT510879B1/en active
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- 2011-10-25 DE DE201110116868 patent/DE102011116868A1/en active Pending
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1106736A (en) * | 1993-10-27 | 1995-08-16 | 普罗控制公开股份有限公司 | Servo-gearshift, method and turning means used in die casting machine |
| CN1316322A (en) * | 2000-04-04 | 2001-10-10 | 住友重机械工业株式会社 | Injection method of injection machine and its control system |
| CN1778495A (en) * | 2004-11-24 | 2006-05-31 | Ykk株式会社 | Motor drive injection unit, die cast machine having the unit, and motor drive injection method |
| CN101402245A (en) * | 2007-10-02 | 2009-04-08 | 日精树脂工业株式会社 | Controller of injection molding machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102529054A (en) | 2012-07-04 |
| AT510879A1 (en) | 2012-07-15 |
| DE102011116868A1 (en) | 2012-06-28 |
| AT510879B1 (en) | 2012-10-15 |
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