• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Method for finding a desired delivery rate of a pump system (7) having at least one pump (10) for conveying a tempering medium through at least one tempering channel (4, 5) of a forming tool (6) by means of the at least one pump (10), wherein a) a regulation of at least one tempering volume flow through the at least one tempering channel (4, 5) is carried out according to a controlled variable using at least one throttle (12) as an actuator so that the at least one tempering volume flow remains substantially constant, b) a flow rate of the pump system (7 ) is measured, c) the at least one pump (10) is controlled starting from a starting flow independently of the control of the at least one Temperiervolumenstroms so that a capacity of the pump system to (7) a reduced flow rate is reduced, and d) is checked thereafter whether the flow rate remains substantially constant and, i. if this is the case, the reduced capacity is determined as the target capacity or, ii. if this is not the case despite the regulation of the at least one tempering volume flow, the starting delivery rate is determined as the nominal delivery rate.
    公开号:AT519157A1
    申请号:T50925/2016
    申请日:2016-10-14
    公开日:2018-04-15
    发明作者:Ing Christoph Balka Dipl
    申请人:Engel Austria Gmbh；
    IPC主号:
    专利说明:

    The present invention relates to a method for finding a desired delivery rate of a pump system having at least one pump for conveying a temperature control medium through at least one temperature control channel of a molding tool by means of the at least one pump. The present invention also relates to a pump system for conveying a tempering medium through at least one tempering channel of a molding tool with the features of the preamble of claim 9 and of claim 10.
    Forming tools, which are used in forming machines, such as injection molding machines, transfer molding, pressing and the like, must be tempered in many cases, that is targeted cooled or heated.
    This tempering can be achieved by conveying a tempering medium through appropriate tempering channels, which enforce the mold. In many cases, several temperature control channels are used and it is known to regulate the Temperiervolumenstrom through the individual Temperierkanäle for example, the volume flow, the pressure drop, the temperature difference or the like. For this purpose, chokes are available as an actuator for the control in the individual temperature control channels.
    In AT 513870 A1 it was then disclosed to regulate also a pump which supplies the tempering system with tempering medium. By controlling the pump so that at least one of the throttles is almost fully opened, the pump can be operated at an energy saving operating point.
    The corresponding system is more complicated than before due to the added regulation and therefore could be improved in this respect.
    The object of the invention is therefore to provide a method and a device that allow a simplified determination of the desired delivery rate.
    This object is achieved in terms of the method with the features of claim 1 or claim 2. In this case, the execution of the following method steps are provided, namely that a) a control of at least one Temperiervolumenstroms by at least one tempering using at least one throttle as an actuator is performed so that the at least one Temperiervolumenstrom remains substantially constant, b) measured a flow rate of the pump system is, c) the at least one pump starting from a starting flow independently of the control of the at least one Temperiervolumenstroms is controlled so that a capacity of the pump system is reduced to a reduced flow rate, and d) then checked whether the flow remains substantially constant and, i. if this is the case, the reduced capacity is determined as the target capacity or, ii. if this is not the case despite the regulation of the at least one tempering volume flow, the starting delivery rate is determined as the nominal delivery rate.
    Alternatively or additionally, it is provided that the method steps c) and d) are carried out in the following form, namely that c) the at least one pump (10) is controlled starting from a starting delivery rate independently of the regulation of the at least one Temperiervolumenstroms so that a delivery rate the pump system is increased to (7) an increased delivery rate, and d) it is then checked whether the delivery rate remains substantially constant and, i. if this is not the case despite the control of the at least one Temperiervolumenstroms, the increased flow rate is determined as the desired flow rate or, ii. if this is the case, the starting delivery rate is determined as the target delivery rate.
    Due to the two characteristics of the method according to the invention, the desired delivery rate can be determined on the basis of a starting delivery rate which is too high or too low for the at least one tempering volume flow.
    With regard to the device, this object is achieved by the features of claim 9 or claim 10.
    This is done by the drive device for the pump system is designed to - to control the at least one pump starting from a starting flow independently of a separate control of at least one Temperiervolumenstroms so that a flow rate of the pump system is reduced to a reduced flow rate, and - then check whether the delivery rate remains substantially constant and, i. if so, determine the reduced capacity as a desired capacity or ii. if this is not the case, determine the starting flow rate as the nominal flow rate.
    Alternatively or additionally, it is provided that the drive device is designed to control the at least one pump (10) independently of a separate control of at least one Temperiervolumenstroms according to a controlled variable so that a delivery rate of the pump system (7) to a increased delivery rate, and - then check whether the flow rate remains substantially constant and, i. if this is not the case, determine the increased capacity as a target capacity or ii. if this is the case, determine the starting delivery rate as the nominal delivery rate.
    As a result of the two characteristics of the pump system according to the invention, the desired delivery rate can be determined starting from a starting delivery rate that is too high or too low for the at least one tempering volume flow.
    An important aspect of the invention is the recognition that the pump system can be controlled independently of a regulation of the Temperiervolumenstroms so that an optimized value for a desired flow rate of the pump system can be found. As a result, the control of the pump system can be completely decoupled from a control circuit for the at least one Temperiervolumenstrom, which obviously provides for a simplification of the control or regulation of the pump system.
    As a criterion for the constancy of Temperiervolumenstroms can serve a range of values for the Temperiervolumenstrom, which must not leave the Temperiervolumenstrom to be considered constant. This range of values may, for example, be given by an average value and limits for the deviation thereof.
    This criterion can also be used to determine the constancy of the flow rate.
    The control according to process step a) or the measurement of the flow rate after process step b) can be carried out continuously, that is continuously, or "pulsed", that is to say at regular or irregular intervals.
    It may be important that both before and after the implementation of the method step c) a control according to method step a) and / or a measurement according to method step b) is performed in order to detect a possible change in the flow rate.
    Process step d) including i and ii is carried out after process step c).
    As a tempering medium, for example, water or oil can be used.
    To control the pump system so that a delivery rate is reduced, the delivery rate of one or more pumps of the pump system can be reduced. Alternatively or additionally, one or more pumps of the pump system can be completely switched off.
    After determining the desired delivery rate, it may be provided to operate the pumping system with this nominal delivery rate.
    As a controlled variable for the regulation of the at least one Temperiervolumenstroms the at least one Temperiervolumenstrom itself can be used. Alternatively or additionally, temperature differences, return temperatures, amounts of heat, flow velocities and similar variables which are in a known physical and / or mathematical relationship with the tempering volume flow can be used.
    Further advantageous embodiments of the invention are defined in the dependent claims.
    It may preferably be provided that the measurement of the delivery flow of the pump system is carried out by means of a sensor upstream and / or downstream of the pump system. This allows a relatively simple determination of the flow. The sensor can be designed, for example, as a volumetric flow sensor. Alternatively or additionally, upstream and downstream temperature sensors, pressure sensors or sensors for sizes that are physically and / or mathematically known in known quantities can be used.
    However, it can also be provided that the measurement of the delivery flow of the pump system is carried out within the framework of the regulation of the at least one temperature control volume flow. In terms of design, this alternative is less complicated, since no additional volumetric flow sensors are necessary.
    A combination of the measurement of the flow rate by own sensors or sensors of the control of the Temperiervolumenstroms, for example by averaging or the like may be advantageous.
    Particularly preferably provided it may be that the method steps c) and d) including i. and ii. be performed several times, each of the target delivery rate from the previous implementation is used as the starting flow rate. By repeatedly carrying out the method according to the invention, the effect of the invention can be enhanced and a more energy-saving nominal delivery rate can be found.
    By scheduling the case, if the case ii. occurs, an almost optimal value for the desired delivery rate can be determined (apart from the "stride length" in reducing the delivery rate of the pump system).
    The method according to the invention can be started by an operator by indicating a starting delivery rate, for example by assuming an instantaneous delivery rate of the pumping system when this is already in operation. This allows operators to easily start the optimization process.
    An automatic optimization can also be achieved by starting the method according to the invention when the delivery rate of the pumping system undergoes substantially no change over a predetermined period of time. The criterion for the fact that the delivery service "experiences essentially no change" can be a range of values, whereby the delivery service is considered to have no change if it does not leave the value range. The range of values may be given, for example, via an average value and limits for a maximum deviation thereof.
    Particularly preferably, it may be provided that more than one temperature control channel is present, wherein a distributor is provided which distributes the pumped by the pump system flow to the different temperature control channels. In this case, a throttle can be provided as an actuator for the control of the at least one Temperiervolumenstroms in each of the temperature control. These throttles can - as well as measuring devices for providing the recirculated variable for the regulation of the at least one Temperiervolumenstroms - be integrated into the manifold. It can be provided in particular that the throttles are controlled independently.
    Protection is also desired for a forming machine with a pump system according to the invention and for a temperature control unit with a pump system according to the invention.
    As tempering device devices are understood, which may represent a source for the temperature of the mold and / or parts of the molding machine regardless of the mold and the molding machine.
    In particular, temperature control units may have a heater for heating the delivery flow of the pump system. Of course, alternatively or additionally, a cooling device for cooling the flow rate can be provided.
    Temperature control devices can be designed for the supply of a single production unit or molding machine.
    Temperature control units can be mobile.
    The drive device for the pump system can be integrated in a central machine control of the forming machine or be executed separately from the central machine control. The same applies to a control device for controlling the Temperiervolumenstroms.
    Further advantages and details of the invention will become apparent from the figures and the accompanying description of the figures. Showing:
    FIG. 1 shows a rough overview of a pump system according to the invention together with a molding tool,
    Figure 2 is a more detailed view of the embodiment of Figure 1 and Figure 3 is a flow chart to illustrate the method according to the invention.
    Schematically, the pump system 7, the distributor 1 and the mold 6 are shown in Figure 1. The pump system 7 promotes temperature control medium (for example water with additives if necessary) through the feed 5 of the temperature control channels through the mold 6 and back via the return 4 of the temperature control channels. Of course, the system can also be open, that is to say with a tank. The drive device 8 is connected via an interface 9 with the pump system 7. Via the interface 9, the drive device 8 controls the pumps 10 (see FIG. 2) of the pump system 7. In addition, measured values of volumetric flow sensors 11 (see also FIG. 2) are transmitted via the interface 9 to the control device 8. The distributor 1 is associated with a control device 2. There is likewise an interface 3 via which the control device 2 receives measured values of corresponding volume flow sensors in the temperature control channels. The control device 2 uses the measured values of the volumetric flow sensors as returned variables for the control of the temperature control volumetric flows. As an actuator serve throttles, which are arranged in the temperature control and are controlled independently of the pump system and each other.
    In Figure 2, the blocks of Figure 1 are shown in more detail.
    In the present case, the pump system 7 has a pump 10 as well as volume flow sensors 11 for detecting the delivery flow of the pump system 7.
    Instead of the volume flow sensors 11, alternatively or additionally upstream and downstream pressure sensors and / or temperature sensors could be used. Of course, for detecting the flow rate any sensors can be used, which measure one or more size, which are in a known physical and / or mathematical relationship to the flow rate.
    The measurement of the delivery rate of the pump system 7 can take place, for example, via the electrical power consumption of the drives of the pumps 10. Of course, it is also readily possible to measure both the flow rate of the pump system 7 and the pressure drop and to calculate the flow rate.
    In the distributor 1 is shown how the flow 5 of the temperature control is split into purely here, for example, four tempering. In the distributor 1, the returns 4 are also combined into a single return 4 and fed to the pump system 7.
    In return 4, the measuring devices and actuators (throttles) are also provided for the control of Temperiervolumenströme. These are provided together with the reference numeral 12. (As a controlled variable, the tempering volume flows are used themselves.)
    The pump system in this embodiment is part of a temperature control, not shown.
    FIG. 3 shows a flow chart illustrating a method according to the invention. In the initial state, for example, a variable-speed (alternatively: controlled) pump is operated with a starting delivery rate (n (0) = 100%).
    Then the optimization is started - either by an operator or automatically. It is noted that the first iteration of the method is performed, or more generally that the method is in the iteration step i + 1. This is indicated by "i = i + 1".
    Then, the capacity is lowered by lowering the speed of the drive for the pump 10 by Δη. It is then checked whether the flow rate V (i) undergoes a reduction in the respective step. If this is not the case, a further iteration of the method can be started. If this is already the case, the optimization is ended and the speed in the previous step is used to determine the nominal delivery rate.
    Of course, the inventive method can not be performed only with variable speed pumps. The changes in the delivery rate of the pump system can also be done with variable displacement pumps (then controlled and / or regulated according to pump speed and / or Pumpenverstellwinkel) or by switching off pumps of the pump system.
    权利要求:
    Claims (16)
    [1]
    claims
    1. A method for finding a desired flow rate of at least one pump (10) having pumping system (7) for conveying a tempering through at least one tempering (4, 5) of a mold (6) by means of at least one pump (10) a) a control of at least one Temperiervolumenstroms by the at least one tempering (4, 5) after a controlled variable using at least one throttle (12) is performed as an actuator so that the at least one Temperiervolumenstrom remains substantially constant, b) a flow of the pump system (7) is measured, c) the at least one pump (10) is controlled starting from a starting delivery rate independent of the regulation of the at least one Temperiervolumenstroms so that a capacity of the pump system is reduced to (7) a reduced flow rate, and d) thereafter It is checked whether the flow rate remains substantially constant and, i. if this is the case, the reduced capacity is determined as the target capacity or, ii. if this is not the case despite the regulation of the at least one tempering volume flow, the starting delivery rate is determined as the nominal delivery rate.
    [2]
    2. A method for finding a desired flow rate of at least one pump (10) having pumping system (7) for conveying a tempering through at least one tempering (4, 5) of a mold (6) by means of at least one pump (10) a) a control of at least one Temperiervolumenstroms by the at least one tempering (4, 5) after a controlled variable using at least one throttle (12) is performed as an actuator so that the at least one Temperiervolumenstrom remains substantially constant, b) a flow of the pump system (7) is measured, c) the at least one pump (10) is controlled starting from a starting delivery rate independently of the regulation of the at least one tempering volume flow such that a delivery rate of the pumping system is increased to (7) an increased delivery rate, and d) thereafter It is checked whether the flow rate remains substantially constant and, i. if this is not the case despite the control of the at least one Temperiervolumenstroms, the increased flow rate is determined as the desired flow rate or, ii. if this is the case, the starting delivery rate is determined as the target delivery rate.
    [3]
    3. The method according to claim 1 or 2, characterized in that the measurement of the flow rate of the pump system (7) by means of a pump system (7) upstream and / or downstream sensor is performed.
    [4]
    4. The method according to any one of the preceding claims, characterized in that the measurement of the flow rate of the pump system (7) is carried out as part of the regulation of the at least one Temperiervolumenstroms.
    [5]
    5. The method according to any one of the preceding claims, characterized in that the method steps c) and d) including i. and ii. be performed several times, being used as the starting flow in each case the target flow rate from the previous implementation.
    [6]
    6. The method according to claim 5, characterized in that the method is terminated when the case ii. entry.
    [7]
    7. The method according to any one of the preceding claims, characterized in that the method is started when - this is caused by an operator inputting a starting flow rate and / or - if the delivery rate of the pump system (7) for a predetermined period of time substantially no change experiences.
    [8]
    8. The method according to any one of the preceding claims, characterized in that a plurality of throttles (12) in a plurality of temperature control channels (4,5) are used, wherein the throttles (12) are preferably controlled independently.
    [9]
    9. Pump system for conveying a temperature control by at least one tempering (4, 5) of a mold, in particular operated according to one of claims 1 to 8, with at least one pump (10) and a drive device (8) for driving the at least one pump (10 ), which has a signal input (9) for measured values of a volume flow sensor for detecting a delivery rate of the pump system (7), characterized in that the drive device (8) is designed to - the at least one pump (10) starting from a starting delivery rate independent of a separate control of at least one Temperiervolumenstroms to control a control variable so that a flow rate of the pump system (7) reduces to a reduced flow rate, and - then check whether the flow rate remains substantially constant and, i. if so, determine the reduced capacity as a desired capacity or ii. if this is not the case, determine the starting flow rate as the nominal flow rate.
    [10]
    10. Pump system for conveying a tempering through at least one tempering (4, 5) of a mold, in particular operated according to one of claims 1 to 8, with at least one pump (10) and a drive device (8) for driving the at least one pump (10 ), which has a signal input (9) for measured values of a volume flow sensor for detecting a delivery rate of the pump system (7), characterized in that the drive device (8) is designed to - the at least one pump (10) starting from a starting delivery rate independent of a separate control of at least one Temperiervolumenstroms to control a controlled variable so that increases a flow rate of the pump system (7) to an increased flow rate, and - then check whether the flow rate remains substantially constant and, i. if this is not the case, determine the increased capacity as a target capacity or ii. if this is the case, determine the starting delivery rate as the nominal delivery rate.
    [11]
    11. A pump system according to claim 9 or 10, characterized in that a distributor (1) for distributing the flow to a plurality - preferably parallel-connected - tempering (4, 5) is provided.
    [12]
    12. A pump system according to claim 11, characterized in that in each of the temperature control channels (4, 5), a throttle (12) is provided as an actuator for the control of the at least one Temperiervolumenstroms.
    [13]
    13. Forming machine with a pump system according to one of claims 9 to 12.
    [14]
    14. Forming machine according to claim 13, characterized in that the drive device (8) is integrated in a central machine control of the forming machine or is carried out separately from the central machine control.
    [15]
    15. Forming machine according to claim 13 or 14, characterized in that a control device (2) for controlling the at least one Temperiervolumenstroms is integrated into a central machine control of the molding machine or is carried out separately from the central machine control.
    [16]
    16. Temperature control device with a pump system according to one of claims 9 to 12.
    类似技术:
    公开号 | 公开日 | 专利标题
    EP2366830B1|2016-05-11|Method and system for applying a street pavement
    DE102010011044B4|2012-12-27|Method for controlling a glow plug
    DE102007061775A1|2009-07-02|Injection molding method, involves comparing mean value, maximum value, point of time, initial gradient and time constants with provided parameter set point, and determining dwell pressure value for subsequent injection molding operation
    DE4134090A1|1992-04-23|THERMAL CONTROL METHOD FOR AN INJECTION MOLDING MACHINE
    AT519157B1|2018-06-15|Method for finding a desired delivery rate of a pump system
    DE102015008371A1|2016-01-07|Method and device for tempering a mold
    EP2192309A2|2010-06-02|Method and regulating switch for regulating a printed material supply for a hydraulic actuator
    EP3535069A1|2019-09-11|Method for operating a combined casting/rolling installation
    DE102010042759A1|2012-04-26|Method for manufacturing plastic-molding parts, involves controlling temperature control circuits to minimize differential-temperature distribution with plastic-molded part in subsequent production cycle
    EP3661720B1|2021-09-08|Method for the variothermal temperature control of injection moulds
    DE102010052254A1|2011-06-30|Automatic lubricating device for an injection molding machine
    EP2762291B1|2021-04-07|Device and method for the temperature control of a forming tool or component of a forming machine
    DE102011012714A1|2011-10-06|Hydraulic drive unit for e.g. core puller, has controller or regulation unit controlling regulation of pump, where signal of controller or regulation unit is measured, so that position of piston is computed from measured signal
    AT513872B1|2016-06-15|Temperature control device for a mold and method for operating the same
    DE102012107016B4|2018-11-22|Method for operating a heater for a battery of an at least partially and / or temporarily electrically driven motor vehicle
    DE102004006162B4|2006-01-26|Injection molding tool heating method involves controling temperature difference across the tool by measurement of feed and return line temperatures and controling fluid flow using the temperature difference
    EP2923837A1|2015-09-30|Method to decrease peak load in a printing machine
    AT519283B1|2019-03-15|METHOD FOR PRODUCING PLASTIC PROFILES
    EP2174769A1|2010-04-14|Injection moulding method and corresponding assembly
    DE102013006398A1|2013-10-24|Automatic grease supply device of an injection molding machine
    AT517759B1|2017-11-15|Temperature control device and shaping machine
    DE102015207705B3|2016-05-04|Method for controlling a fuel delivery system
    DE102015207672B3|2016-09-01|Method for controlling a fuel delivery system
    DE102011084194A1|2013-04-11|Method for operating metering unit of common rail fuel injection system of diesel engine of motor car, involves setting desired current by parameter that is determined based on desired current and coil resistance value at coil temperature
    DE102014012043A1|2016-02-18|Method for operating a self-propelled road construction machine
    同族专利:
    公开号 | 公开日
    CN107956679A|2018-04-24|
    AT519157B1|2018-06-15|
    EP3309402A1|2018-04-18|
    US20180104864A1|2018-04-19|
    EP3309402B1|2021-09-15|
    CN107956679B|2020-04-28|
    KR20180041598A|2018-04-24|
    KR101958569B1|2019-03-14|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE10064783A1|2000-12-22|2002-05-23|Oni Waermetrafo Gmbh|Coolant flow control method for injection molding or extrusion blow molding machines involves comparison of flow rates on the supply and take-off sides of the tool|
    EP1970146A1|2007-03-15|2008-09-17|Bühler Druckguss AG|Method and apparatus for tempering casting moulds|
    US20150370262A1|2013-02-27|2015-12-24|Matsui Mfg. Co., Ltd.|Liquid Supply Apparatus|
    DE10119567C1|2001-04-21|2002-06-20|Illig Maschinenbau Adolf|Cooling of both halves of a mold for making thermoplastic containers by deep drawing, comprises maintaining the temperature of each half by feeding a coolant from a tank through individual mixer valves for each mold half|
    KR100470835B1|2002-01-28|2005-03-08|임채복|Mold Temperature Control System|
    DE102008045006A1|2008-08-29|2010-03-04|Kraussmaffei Technologies Gmbh|Method and apparatus for variothermic temperature control of injection molds|
    CA2824725A1|2011-01-25|2012-08-02|Lego A/S|A method for the manufacture of a mould part with channel for temperature regulation and a mould part made by the method|
    KR101330525B1|2013-01-04|2013-11-18|주식회사 어코드시스템|Temperature adjusting apparatus for mold and the method thereof|
    AT513870B1|2013-02-04|2014-12-15|Engel Austria Gmbh|Method for tempering a mold|
    DE102013204680A1|2013-03-18|2014-09-18|Krones Ag|DEVICE FOR CONTROLLING A TEMPERATURE DEVICE OF A BLOW-MOLDING MACHINE AND METHOD FOR CONTROLLING A TEMPERING UNIT OF A BLOW-FORMING MACHINE|
    AT515948B1|2014-07-03|2016-01-15|Engel Austria Gmbh|Method and device for tempering a mold|
    KR101782781B1|2016-06-16|2017-09-29|대한전기공업 주식회사|Mold temperature controller|WO2021256916A2|2020-06-16|2021-12-23|Daikin Research & Development Malaysia Sdn. Bhd.|System and method for controlling fluid flow|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50925/2016A|AT519157B1|2016-10-14|2016-10-14|Method for finding a desired delivery rate of a pump system|ATA50925/2016A| AT519157B1|2016-10-14|2016-10-14|Method for finding a desired delivery rate of a pump system|
    EP17192909.4A| EP3309402B1|2016-10-14|2017-09-25|Method for finding a target output capacity of a pump system|
    US15/782,042| US20180104864A1|2016-10-14|2017-10-12|Method for finding a target conveying capacity of a pumping system|
    CN201710949666.5A| CN107956679B|2016-10-14|2017-10-13|Method for detecting rated power delivery of pump system|
    KR1020170133102A| KR101958569B1|2016-10-14|2017-10-13|A method for finding a target conveying capacity of a pumping system|
    [返回顶部]