• 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:
    Temperature control device for temperature control of a molding tool (3) with at least one signal input (15) by means of which at least one parameter signal can be fed to a processor, wherein the processor is adapted from at least one tempering parameter, which is the at least one parameter signal or a variable derived therefrom to calculate the characteristic variable for reaching a substantially thermally stationary state of the mold (3) and to pass it on to an output device (6) which is suitable for outputting the characteristic variable to an operator and / or to a machine control.
    公开号:AT515948A4
    申请号:T530/2014
    申请日:2014-07-03
    公开日:2016-01-15
    发明作者:Florian Msc Raschke；Josef Dipl Ing Giessauf；Georg Dipl Ing Dr Pillwein
    申请人:Engel Austria Gmbh；
    IPC主号:
    专利说明:

    The present invention relates to a tempering apparatus having the features of the preamble of claim 1 and a method having the features of the preamble of claim 17.
    In the following, the state of the art will be explained with reference to a molding tool of an injection molding machine. However, analogous statements also apply to mold tools in presses, transfer molding and the like. For the molding quality of a molded part produced by means of an injection molding machine, inter alia, the temperature of the molding tool, in particular on the cavity surface, is important. If the temperature is too low here, an excessive hardening of the melt on entry into the mold cavity can lead to defects, especially on the surface of the molded part.
    In order to avoid this, a tempering of the mold is carried out in the prior art. This is described for example in DE 10 2005 019 890 B3. A tempering medium is conveyed through at least one tempering channel in the mold to bring the mold to an acceptable temperature.
    As a rule, several tempering channels are provided in the mold, which are fed by a common flow. In this case, a variant is preferred in which the flow of temperature control medium is split in the flow and in each case a partial flow is supplied to a temperature control channel. After the temperature control channels, the partial flows are again combined in a common return.
    This splitting and combining of the partial flows of tempering medium frequently occurs in so-called tempering water distributors on the shaping machine. For a description of such Temperierwasserverteiler reference is made to DE 10 2012 013 643 A1 of the Applicant, DE 88 02 462 U1 or die DE 203 04 841 U1.
    It is also known in the art to control or regulate the supply of the tempering medium. For this purpose, Temperierwasserverteiler be equipped with various sensors such as temperature sensors and flow sensors, the measured values serve as a basis for the control or regulation. This control is mostly integrated with a machine control of the molding machine.
    However, external temperature control units are also known, which are used independently of the shaping machine for the controlled or controlled temperature control of molds.
    Heating a tool is a sluggish process. Tool heating times range from a few minutes to several hours.
    In terms of molding quality and process stability, tools should be thoroughly warmed up before production starts. However, considering the energy efficiency and the high availability of tools, it is important to avoid unnecessary heating of tools.
    For this it is known in the art to directly measure the temperature of the cavity surface in the tool. If this temperature is too low, the start of production can be postponed or an already manufactured molded part can be automatically declared as reject.
    This method has the disadvantage that temperature sensors for directly measuring the temperature of the cavity surface are not routinely used in molds because they are costly.
    It is also possible to simulate the thermal situation in and around the mold at the beginning of the tempering and to determine from the simulation the time it takes to heat the mold.
    However, all boundary conditions during the heating process must correspond to those of the simulation (initial temperature of the tool, (constant / fluctuating) medium temperature, ambient temperature), which means that the applicability suffers in the specific case. Moreover, it is disadvantageous that simulations of this kind are quite complex.
    In particular, in the event of production stoppages, it is also known to carry out a temperature measurement on the component (for example during or immediately after demolding) or to determine the thermal budget of the molded parts by means of infrared sensors (for example: thermal imaging camera).
    However, this procedure is very cost-intensive. In addition, the handling of this method is not always easy in practice.
    The object of the invention is to provide a tempering device and a method for tempering a molding tool, which permit a comparison with the state of the art of simplified determination of the heating of the molding tool at the beginning of production and / or during production stoppages.
    This object is achieved with regard to the tempering device with the features of claim 1 and with respect to the method with the features of claim 17.
    This is done by a processor of the tempering device is adapted to calculate from at least one tempering parameter, which is at least one supplied parameter signal or a variable derived therefrom, a characteristic of reaching a substantially thermally stationary state of the mold characteristic variable and to an output device, which for output the characteristic size to an operator and / or to a machine control is suitable.
    As derived quantities, any quantities can be used which can be obtained by computational operations, integration, derivation, applying functions and the like from the original size (for example the at least one parameter signal).
    The thermally stationary state may be given by a substantially constant time temperature of the mold. It should be noted, however, that production influences should not be taken into account, since, for example, introducing a melt into the mold cavity and then cooling it naturally affects the thermal budget of the mold. In the case of a production already started, the criterion for the essentially thermally stationary state can be, for example, the constancy of a quantity averaged over a cycle time, in particular a temperature difference. The constancy, for example, of a temperature or a temperature difference at a defined time in the production cycle over several cycles can also be used as a criterion for the thermally stationary state.
    If the characteristic variable is output to an operator, this can be done in a variety of ways. In addition to the direct, visual, numerical indication of a time of reaching or a period of time until a substantially thermally stationary state of the molding tool is reached, it may be provided, for example, to use information lamps or the like which stand for certain residual periods.
    In the simplest case, only information can be output to the operator as to whether the essentially thermally stationary state has already been reached (residual duration 0). This may also be used during production to monitor that there are no undesirable thermal effects that would interfere with the substantially thermally stationary condition in the mold.
    The output of the characteristic size can also be sent to the
    Machine control take place, which initiates the appropriate actions (eg production start or wait) of the molding machine.
    The tempering device can be integrated in the machine control.
    By the invention it is possible in a simple way to estimate the time wanneine good heating of the mold is given. This helps to minimize shot numbers.
    Water can be used as the tempering medium - possibly with additives. But the tempering with oil or the like is conceivable.
    Advantageous embodiments of the invention are defined in the dependent claims.
    Preferably, it can be provided that the at least one tempering parameter is at least one temperature difference, at least one discharged heat quantity, at least one heating power or a variable derived from these parameters. Sizes of this class are well suited for detecting the heat balance of the mold.
    It can preferably be provided that the tempering device can be connected to at least one temperature sensor by means of at least one signal input, wherein at least one measured temperature value measured by means of the at least one temperature sensor is the parameter signal.
    It may further be preferable to use at least two temperature sensors. In particular, if they are arranged to provide a temperature in the flow and a temperature in the return, preferably separately for each temperature control channel, a temperature difference can thereby be formed, which makes it possible to calculate the dissipated heat relatively accurately. A high accuracy in the calculation of the characteristic size can thereby be achieved.
    However, other embodiments are conceivable. If, for example, a constant temperature of the temperature control medium in the flow is to be expected, fewer temperature sensors can be used (for example, one temperature sensor per temperature control channel in the return).
    In particular, if temperature differences from flow temperatures and return temperatures are available to calculate the characteristic quantity, the additional use of the measured values of a volumetric flow sensor may be of advantage. When determining the tempering parameter, in particular the amount of heat removed, these volumetric flow measured values can increase the accuracy.
    In a simple embodiment of the invention it can be provided that the tempering device is connectable by means of the at least one signal input to a heating element for heating a tempering medium, wherein a received electrical power and / or a duty cycle of the heating element is the parameter signal. Thus, the invention can also be used if there are no temperature sensors or their use is to be avoided.
    It is also possible to use other parameter signals except temperature measurements. An example would be the use of a duty cycle or a power consumption of a heater for heating the cooling medium in the course as a parameter signal.
    In many of the preferred tempering parameters, an asymptotic behavior can be expected, that is, the actual equilibrium temperature is reached only after a very long or infinite time. It may thereby be advantageous if a tolerance range for the at least one tempering parameter, preferably formed by a nominal value for the characteristic variable and a tolerance value for deviations permitted therefrom, is stored in a memory connected to the processor.
    If, for example, a derivative, for example a temperature difference, is used as the tempering parameter in this case, it may also be advantageous for a threshold value for the at least one tempering parameter to be stored in a memory connected to the processor.
    The characteristic quantity in these cases can be relatively easily set as a time or a period until reaching the tolerance range or the threshold value.
    In a particularly preferred embodiment, it can be provided that the processor is designed to determine at least one parameter of a function describing the behavior of the at least one tempering parameter before reaching the thermally stationary state of the mold from the at least one parameter signal, and preferably the time period until reaching the tolerance range and or the threshold by the at least one tolerance range using the at least one parameter.
    In particular, the determination of the parameter can be done by means of a curve fit to the at least one tempering parameter.
    In this embodiment, in particular by providing a plurality of temperature readings, that is to say by measuring one or more temperature profiles, it is possible to improve the accuracy of the temperature control parameter and / or the curve fit.
    In a particularly preferred embodiment of the invention, at least two temperature control channels each have at least one separate parameter signal. This allows the processor to be configured to calculate and pass on separate characteristic quantities for the at least two temperature control channels, which are suitable for outputting the separate characteristic quantity to the operator and / or to the machine control.
    In this embodiment, it is then possible to identify, due to the characteristic variables separate for the tempering channels, the tempering channel which requires the longest for the purpose of heating. This tempering channel can then be selectively influenced, for example by increasing the volume flow in this tempering channel. For example, by continuing this scheme, even the total time to heating of the mold may be minimized.
    There is also protection for a temperature control unit with a flow for supplying the tempering to at least one tempering of a mold, a return for removal of the tempering of at least one tempering, a control or regulating unit, at least one connected to the Steuer¬oder control unit actuator for adjusting a volume flow and / or a temperature of the tempering medium conveyed by the at least one tempering channel and a tempering device according to the invention.
    It can preferably be provided that the at least one temperature sensor measures temperatures of the temperature control medium. In certain cases, it may also make sense to measure temperatures, for example, on the mold.
    In addition, protection for a molding machine with a temperature control device according to the invention or a temperature control device according to the invention is desired.
    In this case, molding machines can be understood as meaning injection molding machines, transfer molding presses and the like.
    Further advantages and details of the invention will be apparent from the figures and the accompanying description of the figures. Showing:
    Fig. 1 is a schematic representation of an inventive
    tempering,
    Fig. 2 is a schematic representation of the invention in a
    injection molding machine,
    3 and 4 show two schematic representations of the invention
    Temperature control units and
    Figures 5a, 5b and 6 are three diagrams illustrating the thermal situation in a mold prior to complete soak through.
    FIG. 1 shows a temperature control device 1 according to the invention purely symbolically. It has a processor 4, an associated output device 6 and a memory 7. Also shown is the connection of the temperature control device 1 with temperature sensors 2 and volume flow control valves 5, as well as the arrangement of the various sensors in relation to the mold 3.
    The dispenser 6 in this case has a screen as well as an interface (both not shown). Among other things, the characteristic size tToi is displayed visually to the user by means of the screen. Of course, all other sizes that appear (see below) can also be output. Via the (in this case software) interface, the output device 6 also communicates the characteristic quantity tToi of the machine control in which the temperature control device 1 is integrated. The operator may decide beforehand whether, upon reaching the substantially thermally steady state, the production is automatically picked up by the machine control, or whether an operator's command is necessary for this.
    In the mold 3 some tempering 8 are provided. These are fed from a flow 11, wherein the flow 11 consists of initially a single line, which then splits to feed the individual temperature control channels 8. The situation is similar with the return 12. Here is first
    Temperiermedium discharged from the temperature control channels 8 and then summarized in the return ineiner line. The splitting and merging of the cooling medium flow in flow 11 and return 12 takes place in per se known Emperiermediumverteilern. For each branch of flow 11 and return 12, a separate temperature sensor 2 is provided. This enables the individual detection of a temperature difference ΔΤ for each tempering channel 8. The temperature sensors 2 are connected to the tempering device 1 and in particular to its processor 4, which performs the calculation of the variable tr0i characteristic for achieving a substantially thermal steady state of the forming tool 3. For the operation Reference is made to FIGS. 5a, 5b and 6 as well as the associated description of the temperature control device 1.
    Also in the flow 11 for each branch separately are actuators 5 for Einstellstellung or. Influencing the flow rates, which are also connected to the processor 4. During normal operation - ie after reaching a substantially thermally stationary state - these are used as actuators 5 for a temperature difference control of the flow rates through the individual temperature control channels 8. Volumetric flow sensors 9 are also used to control the temperature difference at the substantially thermally steady state. Of course, the temperature differences can also be controlled, which is why the volumetric flow sensors are not necessarily necessary.
    For this purpose, the processor 4 calculates a temperature difference ΔΓ averaged over a certain period of time (for example a cycle time) from temperature measured values of the temperature sensors 2 which are supplied at very short time intervals in accordance with the following formula: η
    Here, V * denotes the measured volume flow, p * the density and cp * specific heat capacity of the temperature control medium, AT * the differences between the measured temperature readings between flow 11 and return 12 for the individual temperature control channels 8 and Q the quantity of heat removed.
    The averaged temperature difference ΔΤ is then used as a recirculated quantity for the regulation of the volume flow by means of the volume flow control valves 5. This control can also be carried out by the processor 4.
    In contrast to a pure averaging of temperature differences, fluctuations in the volume flow, in the specific heat capacity and in the density are taken into account in this way. The calculation of the average temperature difference from the heat quantity offers all the advantages of using the amount of heat (detection of the heat budget in the mold 3), the average temperature difference, in contrast to the amount of heat, being an easily understandable and tangible quantity.
    It should be noted that the temperature difference control is not essential to the invention. The invention can also be used with any other regulation or control of the tempering of the mold.
    FIG. 2 shows, in part, a schematic representation of how the embodiment from FIG. 1 is used in an injection molding machine 13. The temperature control device 1 is designed as shown in FIG. The embodiment of FIG. 2 differs from that of FIG. 1 in that the volumetric flow sensors 9 and the actuators 5 are arranged in the return 12 instead of in the supply 11.
    An alternative embodiment to FIG. 2 results from the fact that the temperature sensors 2 located in the flow 11 are replaced by a temperature sensor provided with the reference numeral 2 'in the common flow.
    Figure 3 shows an embodiment, wherein the invention is used in a tempering device 14. The temperature control unit 14 is executed by the forming machine. In this case, there is only one tempering circuit 8, which serves for tempering the molding tool 3. Of course, temperature control units 14 can also be used with several temperature control circuits 8. The tempering device has, analogously to FIG. 1, a processor 4, an output device 6 and a memory 7. It should be noted that the output device 6 can be formed directly on the temperature control device 14 - for example a screen. However, it is also possible to use, as the dispenser 6, an output device 6 already present on the molding machine, whereby there must be some kind of data connection between the temperature control unit 14 and the forming machine.
    In the embodiment illustrated in FIG. 3, temperature sensors 2 as well as a volume flow sensor 9 are also used. That is, the at least one parameter signal in this case, as in the embodiments of Figure 1 and Figure 2, comprises several temperature readings.
    The embodiment shown in Figure 4 is analogous to that of Figure 3 with the difference that no temperature sensors 2 are used, but that at least one parameter signal of a heating element 10 is used. The at least one parameter signal may in this case be a turn-on duration of the heating element 10 or an electrical power consumption of the heating element 10. It should be noted that the heating element 10 is arranged inside the temperature control unit 14 in this case. That is, within the temperature control unit 14, the temperature control medium from the return 12 is conveyed by means of a pump (not shown) in the flow 11. Before or after the pump is in circulation
    Heating element 10 is arranged. This inner life of the temperature control unit 14 is not shown for the sake of simplicity.
    In order to clarify the thermal situation in the mold 3 before the substantially thermally stationary state has been reached, in FIGS. 5a and 5b, the temperature at the cavity surface T.sub.o in the mold 3, the
    dP during heating of the mold 3 provided heating power P, whose derivative - and the flow temperature TVo of the temperature control medium (in this case, water) in Vorlauf 11 idealized.
    As can be seen, after a certain time a substantially constant thermal situation or a substantially thermally stationary state arises. Even in the thermally stationary state, a heat flow is constantly flowing.
    In this illustrated situation, the heat flow is constant and provides the lost power P - This value is dependent on the losses due to radiation, convection and heat conduction at the substantially stationary state.
    Any derived quantity at which this essentially thermally stationary state can be read can be used as a tempering parameter.
    As already mentioned, by continuing or starting production, a periodic (corresponding to the cycle time) change in the heat balance can be superimposed on the stationary state. During production, a substantially thermally stationary state may be understood to mean that a tempering parameter averaged over a cycle time remains substantially constant, or that at a defined point in the cycle or averaged over the cycle, a substantially similar thermal situation prevails.
    Some examples of the calculation of the variable tr0i characteristic of achieving the substantially stationary state are given below.
    Examples of tempering parameters used for this purpose are a temperature difference ΔΤ, a heating power P and variables derived from these variables, such as
    Example time derivatives < ^ - and -. dt dt
    From the measured temperature difference ΔΤ, the heating power P during preheating of the mold 3 can be calculated:
    P = Vp (T) cp (T) AT
    Here, V denotes the volume flow and p (T) and cp (T) denote the general temperature-dependent density or specific heat capacity of the temperature control medium.
    dP
    From the slope (first derivative on time) of the power curve - or the dt
    1 dP normalized slope - · - can be determined how far the heating process has progressed. At constant volumetric flow and assumed to be constant 1. ii Τ '
    Density and heat capacity can also be used for this purpose - or --- dt AT dt for the sake of simplicity.
    Alternatively, a volumetric flow-cleaned form of temperature difference may be used, as set forth in equation (*). This is advantageous because temperature differences are easier to detect for the operator and at the same time all advantages of the performance as tempering parameters are maintained.
    The exemplary course of the temperature difference ΔΤ during the heating of the tool can generally be described for each temperature control channel 8 by the following function: AT (t) = (AT0 -AT ") * e + ^ + AT".
    This curve is shown in FIG.
    From the measurement of AT at different times, the constants AT0, AT ^ and r can be calculated. ΔΓ0 is the temperature difference present at time t = t0. ΔΓ "is the temperature difference that is reached asymptotically after a sufficiently long heating time. This value depends on the losses due to radiation, convection and heat conduction during the substantially stationary state.
    Knowing these constants, it is possible to calculate the time tTol at which the absolute deviation of the temperature difference AT (t) from the asymptotic value ΔΓ "will reach a predetermined tolerance value ATTol stored in the memory 7. This is synonymous with
    Which results in the following calculation of tToi:
    At time t, the remaining time to reach the tolerance would be tToI-t.
    Alternatively, a tolerance threshold for the temporal change of the temperature difference ΔT, ie the dAT / dt, could also be defined:
    For the time of reaching the stored in the memory 7 threshold
    applies in this case
    Alternatively or additionally, the course of the heating power can be compared with previously determined reference curves for this assessment. During heating, flow control can also be performed to minimize heating time. In this case, the volume flow control valves 5 can be influenced by the processor 4 in such a way that those temperature control channels 8, which are expected to require the longest time for soaking, experience a higher volume flow of temperature control medium. This can be achieved, inter alia, by throttling those circuits which experience rapid heating, or by removing restrictions in slow-cycling circuits.
    It should be noted that the derivatives and integrals used here, as far as discrete values are concerned, are to be regarded as their discrete counterparts.
    权利要求:
    Claims (17)
    [1]
    1. tempering device for temperature control of a molding tool (3) with at least one signal input (15) by means of which at least one parameter signal can be fed to a processor, characterized in that the processor is adapted from at least one tempering parameter, which the at least one parameter signal or a derived therefrom size is to calculate a characteristic of achieving a substantially thermally stationary state of the mold (3) and to pass it on to an output device (6), which is suitable for outputting the characteristic size to an operator and / or to a machine control.
    [2]
    2. tempering device according to claim 1, characterized in that derzumindest tempering is at least one temperature difference (AT), at least one heat dissipated amount, at least one heating power (P) or derived from these parameters size.
    [3]
    3. tempering device according to claim 1 or 2, characterized in that the temperature control device (1) by means of the at least one signal input (15) with at least one temperature sensor (2), preferably at least two temperature sensors (2), connectable, at least one by means of at least one Temperature sensor (2) measured temperature measured value is the parameter signal.
    [4]
    4. tempering device according to one of claims 1 to 3, characterized in that the processor (4) at least two Temperaturmesswerte be supplied as signal parameters and the processor (4) is adapted to form at least two temperature measurements at least one temperature difference (AT) and in the Calculation of the characteristic size to be considered.
    [5]
    5. Temperature control device according to one of claims 1 to 4, characterized in that the temperature control device (1) by means of the at least one signal input (15) with a heating element (10) for heating a tempering medium is connectable, wherein a recorded electrical power and / or a duty cycle of the heating element ( 10) is the parameter signal.
    [6]
    6. tempering device according to one of claims 1 to 5, characterized in that the temperature control device (1) by means of the at least one signal input (15) with at least one volumetric flow sensor (5) is connectable, wherein by means of at least one volumetric flow sensor (5) measured volumetric flow readings the processor ( 4) can be fed.
    [7]
    7. tempering device according to one of claims 1 to 6, characterized in that a tolerance range for the at least one tempering, preferably formed by a tolerance value (ΔΤΤθι) for the value of the tempering in thermally stationary Permitted Permitted deviations, in a memory connected to the processor (4) memory ( 7) is deposited.
    [8]
    8. tempering device according to claim 7, characterized in that the characteristic size is a period until reaching the tolerance range by the at least one tempering parameter and / or a time of reaching the tolerance range by the at least one tempering parameter.
    [9]
    9. Temperature control device according to one of claims 1 to 8, characterized in that a threshold value (Ts) for the at least one tempering parameter is stored in a memory (7) connected to the processor (4).
    [10]
    10. tempering device according to claim 9, characterized in that the characteristic size is a period of time (ts) to reach the threshold value (Ts) by the at least one tempering parameter and / or a time of reaching the threshold value (Ts) by the at least one tempering parameter.
    [11]
    11. Temperature control device according to one of claims 7 to 10, characterized in that the processor (4) is adapted to at least one parameter (τ, ΔΓ ", AT0) of the behavior of the at least one tempering parameter before reaching the thermally stationary state of the mold (3 ) to determine at least one parameter signal and preferably to determine the time to reach the tolerance range and / or the threshold value (Ts) through the at least one tolerance range using the at least one parameter (τ, ΔΓ ", ΔΓ0).
    [12]
    12. tempering device according to one of claims 1 to 11, characterized in that at least one temperature sensor (2) is provided, wherein preferably at least two temperature sensors (2) are provided and preferably each one on a to tempering (8) of the Formwerkzeugs (3) leading flow ( 11) and one on one of the tempering channels (8) leading away return (12) is arranged.
    [13]
    13. Temperature control device according to one of claims 1 to 12, characterized in that at least two temperature control channels (8) at least one separate parameter signal is provided and that the processor (4) is adapted to calculate for the at least two tempering channels (8) separate characteristic quantities and to the output device (6), which is suitable for outputting the separate characteristic quantity to the operator and / or to the machine control.
    [14]
    A tempering device according to claim 13, characterized in that the processor (4) is connectable to at least two actuators (5) for controlling or controlling volume flows in the at least two temperature control channels (8) and the processor (4) is adapted to control the volume flows Temperature control channels (8) whose separate characteristic size indicate a later soak.
    [15]
    15. temperature control unit with a flow (11) for supplying the tempering to at least one tempering (8) of a mold (3), a return (12) for removing the tempering from the at least one tempering (8), a control unit and at least one with the control - or control unit connected actuator (5) for adjusting a volume flow and / or a temperature of the at least one tempering (8) funded tempering, characterized in that a temperature control device according to one of claims 1 to 14 is provided.
    [16]
    16 shaping machine with a temperature control device according to any one of claims 1 to 14 or a temperature control device according to claim 15.
    [17]
    17. A method for controlling the temperature of a mold (3), wherein - a tempering medium is conveyed through at least one temperature control channel (8) in the mold (3) and - at least one parameter signal is provided, characterized in that - at least one temperature parameter, which of the at least one parameter signal the at least one parameter signal or a quantity derived therefrom is determined, from which at least one temperature control parameter is calculated, a characteristic variable for achieving a substantially thermally stationary state of the mold (3), and the characteristic variable is output to an operator and / or a machine control ,
    类似技术:
    公开号 | 公开日 | 专利标题
    DE102015008371A1|2016-01-07|Method and device for tempering a mold
    DE69937075T2|2008-05-29|Automatic molding technology for thermoplastic injection molding
    DE69133343T2|2004-09-23|Temperature control system, method and device
    DE102013111257B3|2014-08-14|Method for volumetrically correct filling of cavity of molding tool with melt of material to be processed in injection molding process, involves providing injection molding machine equipped with molding tool
    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
    DE102016002521B4|2020-10-01|Pressure control device for an injection molding machine
    DE102013111328A1|2015-04-16|Process for assessing process properties of injection molds
    DE102014014231A1|2015-04-02|Method for determining a setpoint for a setting parameter
    DE112008001368T5|2010-04-15|Display device for an injection molding device
    DE102010042759B4|2014-03-27|Process for the production of plastic molded parts
    DE102008025180A1|2008-11-27|Hot runner with a temperature sensor for controlling a nozzle heater and corresponding method
    EP3661720B1|2021-09-08|Method for the variothermal temperature control of injection moulds
    DE102010052254B4|2015-11-05|Automatic lubricating device for an injection molding machine
    DE102013217230A1|2015-03-05|Method for calibrating a measuring device in a mobile terminal
    DE102008052608B3|2010-05-20|Method for manufacturing plastic hollow bodies by blow molding, involves setting measurement in relation with reference value, where deviation starts between measurement and reference value for preform
    EP2781335A1|2014-09-24|Device for controlling a tempering device of a blow moulding machine and method for controlling a tempering device of a blow moulding machine
    EP3698937A1|2020-08-26|Method for controlling the filling of at least one cavity
    AT519157B1|2018-06-15|Method for finding a desired delivery rate of a pump system
    EP3546179B1|2021-01-13|Method for reproducing an injection molded part quality in injection molding and injection molding unit for performing said method
    DE102017112129B4|2021-02-25|Control device for controlling at least one control variable of at least one temperature control circuit
    EP2174769A1|2010-04-14|Injection moulding method and corresponding assembly
    DE102007035188A1|2009-05-07|Method for heating a gas sensor
    EP1768830B1|2009-11-18|Temperature-dependent demolding
    DE102007029977A1|2009-01-02|Method for carrying out the closing force reduction in a closing unit of an injection molding machine
    DE102020107463A1|2020-10-01|INJECTION MOLDING SYSTEM, MOLDING CONDITIONS CORRECTION SYSTEM AND INJECTION MOLDING METHOD
    同族专利:
    公开号 | 公开日
    DE102015008371A1|2016-01-07|
    CN105404329B|2018-09-11|
    AT515948B1|2016-01-15|
    CN105404329A|2016-03-16|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE202009012749U1|2009-09-19|2010-01-07|Wenz Kunststoff Gmbh & Co. Kg|Device for tempering an injection mold|
    US20120241125A1|2010-04-21|2012-09-27|Mitsubishi Heavy Industries Plastic Technology Co., Ltd.|Injection molding device and method for discharging heat medium for injection molding device|
    DE102013016773A1|2012-12-21|2014-06-26|Engel Austria Gmbh|Device for tempering medium supply and method for monitoring the same|
    DE8802462U1|1988-02-25|1988-08-25|Gwk Gesellschaft Waerme Kaeltetechnik Mbh, 5883 Kierspe, De|
    DE4436117C2|1994-09-27|1997-10-02|Riesselmann F & H Kunststoff|Process for temperature control of injection molding machine units and mold tool units for plastics processing|
    US5772933A|1994-10-12|1998-06-30|Kotzab; Werner|Method for tempering an injection mold having at least one heated nozzle or hot runner|
    DE20304841U1|2003-03-26|2003-07-10|Technotrans Ag|Fluid distribution system for temperature control of injection molding machines is built up of modular branch flow control valves|
    DE102004006162B4|2004-02-07|2006-01-26|Technotrans Ag|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|
    US8501060B2|2005-02-14|2013-08-06|Moldcool International Llc|Method and apparatus for controlling the temperature of molds, dies, and injection barrels using fluid media|
    DE102005019890B3|2005-04-29|2006-11-30|Dietmar Hofmann|Apparatus and method for tempering molds|
    CN100423929C|2005-08-25|2008-10-08|中国科学院自动化研究所|Self-adapting temperature controlling method for injection moulding forming machine and circuit thereof|
    DE102010045900A1|2010-09-17|2012-03-22|Kraussmaffei Technologies Gmbh|Process for producing a plastic molding|
    AT12805U1|2011-07-14|2012-12-15|Engel Austria Gmbh|Temperiermedienverteiler|
    AT511110B1|2012-01-02|2012-09-15|Engel Austria Gmbh|leak detection|AT519157B1|2016-10-14|2018-06-15|Engel Austria Gmbh|Method for finding a desired delivery rate of a pump system|
    AT520890B1|2018-02-01|2020-03-15|Wittmann Kunststoffgeraete|Temperature control device and method for controlling and regulating a temperature control device for a|
    DE102018001132A1|2018-02-12|2019-08-14|Harburg-Freudenberger Maschinenbau Gmbh|Method and device for valve control|
    AT522639B1|2019-06-19|2021-01-15|Engel Austria Gmbh|Device and method for visualizing or assessing a process status|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA530/2014A|AT515948B1|2014-07-03|2014-07-03|Method and device for tempering a mold|ATA530/2014A| AT515948B1|2014-07-03|2014-07-03|Method and device for tempering a mold|
    DE102015008371.6A| DE102015008371A1|2014-07-03|2015-06-29|Method and device for tempering a mold|
    CN201510915767.1A| CN105404329B|2014-07-03|2015-07-03|Method and apparatus for carrying out temperature adjustment to molding die|
    [返回顶部]