• 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:
    Measuring arrangement (6) for a shaping machine with - a measuring membrane (1) which can be deformed by the action of a force, - a measuring device (2) for metrologically detecting a deformation of the measuring membrane (1) with the output of a measuring signal (7), and - a Evaluation device (3) connected to the measuring device (2), - which evaluation device (3) is designed to, in the context of a first calibration (k1), the measuring signal (7) originating from the deformation of the measuring membrane (1) with a force from a first force value range ) to convert into a first output signal (8), the first output signal (8) being in a previously defined value range, the evaluation device (3) being designed to do this in the context of at least one second calibration (k2, ..., kn) to convert the deformation of the measuring membrane (1) with a force from a second measuring signal (7) originating from the first force value range, which is different from the first force value range, into a second output signal (8), where when the second output signal (8) is in the previously defined value range.
    公开号:AT522798A4
    申请号:T50860/2019
    申请日:2019-10-09
    公开日:2021-02-15
    发明作者:Mühlehner BSc David；Balka Dipl Ing Christoph
    申请人:Engel Austria Gmbh；
    IPC主号:
    专利说明:

    The present invention relates to a measuring arrangement for a shaping machine according to the features of the preamble of claim 1, and a shaping machine with a measuring arrangement according to the features of the preamble of claim 1, and a method for providing a calibration of a measuring arrangement according to the features of the preamble of claim 1 , as well as a computer program product for carrying out the individual steps of such a product
    Procedure.
    It is already known that shaping machines are equipped with measuring arrangements that calibrate a measuring membrane, a measuring device for detecting a deformation of the measuring membrane, and one connected to the measuring device
    Include evaluation device.
    The measuring arrangements have been developed, designed and calibrated for a specific force value range. If this force range changes due to different loads and / or machine designs, a separate measuring arrangement must be made for each force value range or each machine design
    developed, applied and calibrated.
    This can mean that different series of measurements have to be created for a molding machine in order to be able to use different
    To be able to operate injection forces.
    The disadvantage is that a separate measuring arrangement must be designed for each molding machine. This leads to a large number of different measuring membranes, measuring devices and evaluation devices, which are provided by the manufacturer
    must be kept ready. The object of the invention is therefore the prescribed disadvantages
    avoid and compared to the state of the art a uniform and thus
    specify cheaper solution.
    This is achieved by a measuring arrangement with the features of claim 1. Accordingly, the invention provides that an evaluation device with the measuring arrangement
    - a measuring membrane, which can be deformed by a force,
    - a measuring device for the metrological detection of a deformation of the measuring membrane with the output of a measuring signal, and
    - the evaluation device connected to the measuring device,
    - Which evaluation device is designed to convert the measurement signal resulting from the deformation of the measuring membrane with a force from a first force value range into a first output signal, the first output signal being in a previously defined value range,
    is designed to convert the measurement signal resulting from the deformation of the measuring membrane with a force from a second force value range different from the first force value range into a second output signal, the second output signal being in the
    previously defined range of values.
    Preferred embodiments of the present invention are shown in the dependent
    Subclaims listed.
    The output value range is arbitrary. It can be advantageous that a calibration of the evaluation unit is designed to map the lower limit of a force value range to the lower limit of the previously defined output value range and the upper limit of a force value range to the upper limit of the previously defined output value range and the previously defined output value range completely from the Output values of the force value range is covered. The lower one has been found to be particularly advantageous
    Set the limit of the output value range to 0.
    It can be provided that the evaluation unit comprises an amplifier which
    is designed to amplify the signal by various gain factors.
    This is used in particular to transmit measurement signals of different strengths to a uniform
    To be able to map output value range.
    According to a preferred embodiment, an evaluation unit is provided,
    which can switch between the at least two calibrations.
    It can be provided that the evaluation device is designed to change the gain factor of the amplifier when switching between the at least two calibrations. By changing the gain factor, it can be achieved that different force value ranges on a uniform one
    Output value range can be mapped.
    It can be particularly preferred that the evaluation unit is designed to switch between the at least two calibrations by a signal from
    to control the central machine control of a molding machine.
    By switching between the at least two calibrations, it is possible to use the measuring arrangement according to the invention in different machine types and / or machine sizes. It is also possible to operate a molding machine with at least two different force ranges of the injection unit.
    This enables the use of materials with different properties.
    In one embodiment, a molding machine is calibrated for two different force ranges. Both the first force range from 0-250 kN and the second force range from 0-150 kN are mapped to the same value range (0-10V) through different calibrations. This has the advantage that the resolution of the
    Output signal for the second force range is better.
    A calibration can be selected from the machine control at any time, even after commissioning. This enables, among other things, a more precise adaptation of the machine to an a priori known load while the for the
    Available output value range.
    It can be provided that the evaluation unit has more than two calibrations. This has the effect that the measuring arrangement can be used for several different machine sizes and / or machine types without the
    To change measuring device.
    It can be provided that the evaluation unit is designed to select the desired calibration by means of external control pulses, the external control pulses differing in terms of their temporal extent.
    According to an exemplary embodiment, the data transmission between the individual components of the measuring arrangement can be analog or digital (e.g. using a protocol such as OPC-UA, EtherCAT or general fieldbus protocol, etc.)
    respectively.
    In order to increase the flexibility of the measuring arrangement, it can also be provided that the storage unit of the evaluation device is arranged on the measuring membrane. This enables a modular design in which the calibrations, matching the measuring membrane, can be stored directly on the measuring membrane and the evaluation device can call up the different calibrations externally. This means that the same evaluation device can always be installed for different models, series and / or unit sizes, while the corresponding
    Calibrations of the respective membrane can be called up.
    Protection is also sought for an injection unit with one according to the invention
    Measuring arrangement.
    It can be provided that the measuring arrangement is between the plasticizing screw
    and the drive of the injection unit is arranged. Protection is also desired for a molding machine with a
    Injection unit according to the invention. Under molding machines are
    To understand injection molding machines, transfer presses, presses and the like.
    With regard to the method, the object is achieved by the features of claim 14, a measuring arrangement according to the invention being provided and, depending on the forces to be measured by means of the measuring arrangement, the first calibration
    or the at least one second calibration is selected.
    With regard to the computer program product, the object is achieved by the features of claim 15, namely in that commands are provided which, when the program is executed by a computer, cause the computer to receive an input signal relating to the force range, an output signal to the measuring arrangement according to one of the Claims 1 to 10 to send, whereby the first calibration (k1) or the at least a second
    Calibration (k2, ..., kn) is selected.
    Further advantages and details of the invention emerge from the figures and
    the corresponding figure description. Show it
    1 shows an embodiment of a measuring arrangement according to the invention
    2 shows an embodiment of a measuring arrangement according to the invention in an injection molding machine
    3 shows a flowchart of the procedure when using an embodiment of the inventive measuring arrangement in a
    Injection molding machine
    In Fig. 1, an embodiment of a measuring arrangement 6 according to the invention is shown. It has a measuring membrane 1, which by an action of force
    is deformable. On the measuring membrane 1 is a measuring device 2 for metrological recording of a
    Deformation of the measuring membrane 1 attached with the output of a measuring signal 7.
    The measuring device 2 is preferably a strain gauge.
    The deformation detected by the measuring device 2 is forwarded to an evaluation device 3 in the form of a measurement signal 7. The evaluation device 3 is designed to convert the measurement signal 7, which originates from the deformation of the measuring membrane 1 with a force from a first force value range, into a first output signal 8 as part of a first calibration k1, the first output signal 8 being converted into a
    previously defined range of values
    The evaluation device 3 is designed to convert the measurement signal 7 resulting from the deformation of the measuring membrane 1 with a force from a second force value range different from the first force value range into a second output signal 8 within the scope of at least one second calibration k2
    second output signal 8 is in the previously defined value range.
    This means that different force value ranges can be mapped onto the same output value range. Calibrations k4, en kn are preferably used, which map the lower limit of a force value range to the lower limit of the previously defined output value range and the upper limit of a force value range to the upper limit of the previously defined output value range and which map the previously defined output value range completely through the output values of the force value range cover. The lower limit of the output value range is particularly preferably 0 volts, while the upper limit of the
    Output value range is 10 volts.
    The measuring signal 7 moves in a much smaller range than the output signal 8. The measuring device 2 preferably delivers a measuring signal 7 in the millivolt range during
    the output range is on the order of volts.
    In order to convert the measurement signal 7 into the evaluation signal 8, the evaluation unit 3 comprises an amplifier 4. Thus the evaluation unit, within the scope of
    at least two calibrations k +, k ,, ..., kn that from the deformation of the measuring membrane
    1 with a force from different force value ranges coming measurement signal 7 in
    can convert an output signal 8, the output signal 8 in the advance
    defined value range, it is necessary that the amplifier receives the measurement signal 7
    can amplify various gain factors.
    In FIG. 1 it can be seen that the amplifier unit can have any number of calibrations k; +, k2,..., Kn, although according to the invention
    at least two calibrations must be k4, k>, ..., kn.
    The evaluation device 3 is designed between the at least two
    Toggle calibrations k +, k2, ..., ka.
    In Fig. 1, a change is made between the at least two calibrations k + 4, k ,, .., kn,
    by changing the gain of the amplifier. This is done through the
    Evaluation unit 3 according to a signal from the controller 4.
    The measuring unit 2 preferably delivers a measuring signal of 0 volts when there is no force acting on the measuring membrane 1. The stronger the force acting on the measuring membrane 1, the greater the measuring signal 7, although it always moves in the millivolt range. The force value range in which the loads on the measuring arrangement 6 move are already known before the measurement, so a corresponding gain factor for the amplifier and thus a corresponding calibration k4, k2, ..., ka can be selected around the known output value range as completely as possible
    to cover.
    The selection of a calibration k4, k2,..., Kn of the evaluation unit 3 takes place via a signal from the control 4 to the evaluation unit 3
    Calibration k4, k2, ..., kn can be selected.
    Due to the possibility of changing the calibration k4, k2, ..., kn by a controller 4, it is possible to adapt the measuring arrangement 6 directly to the changed load on the measuring membrane 1 when the expected force value range changes, thereby always adapting the given output value range as best as possible
    to exploit. As a result, in the case of an injection unit, the calibrations k +,
    k2, ..., kn different force value ranges can be covered with one measuring arrangement. This enables the use of different materials and / or a
    Varying the injection force.
    The utilization of the output value range means that for all calibrations k4, k2,
    Measurement with the calibration, which is designed for the maximum load.
    The possibility of having different calibrations k4, k;,..., Kn available in the evaluation unit 3 also makes it possible to use the measuring arrangement 6 for differently large force effects and thus also for different machine types and / or
    Use aggregate sizes.
    The measuring arrangement 6 shown in FIG. 1 has its own controller 4 and can be used in
    this version can be integrated into a molding machine.
    In Fig. 2, a measuring arrangement 6 is shown, which is already integrated into an injection molding machine. In this embodiment, the evaluation unit is 3
    the measuring arrangement 6 is connected directly to the injection molding machine control 5.
    In an injection molding machine, a measuring arrangement 6 according to the invention can be between
    the plasticizing screw and the drive of the injection unit.
    The measuring membrane 1 is deformed by the action of a force. By measuring this deformation, the acting force can be determined. The deformation of the measuring membrane 1 is carried out with a measuring unit 2. Is preferred
    Measuring unit 2 is a strain gauge. The measuring unit 2 is connected to the evaluation device 3 by a signal line.
    The evaluation device converts the measurement signal 7 that is received from the measurement unit 2
    is transmitted into the corresponding output signal 8 to.
    Before a measurement or a series of measurements is started, one of the at least two must
    Calibrations k4, k ,, ..., kn for the evaluation device 3 can be selected.
    In the embodiment shown in FIG. 2, the output signal 8 is transmitted directly to the injection molding machine control 5 via a signal line. This is thus directly connected to the measuring arrangement 6 and no additional component has to be arranged between the evaluation device 3 and the injection molding machine control 5
    become.
    Depending on the operating mode or machine model, the corresponding calibration k4, k>, ..., kn der can be carried out via the injection molding machine control 5
    Evaluation unit 3 can be selected for the expected load.
    The selection of the calibration k4, k2, ..., kn is made by the transmission of control pulses from the injection molding machine control 5 to the evaluation unit 3. The selection of the calibration k4, kz2, ..., kn by means of control pulses does not affect the injection molding machine control 5 limited, but can also be your own
    Control 4 of the measuring arrangement 6 take place in this way.
    In the embodiment shown, the evaluation unit 3 has an integrated amplifier in order to convert the measurement signal 7 into the evaluation signal 8 in conjunction with a corresponding calibration k4, k2,..., Ka. When changing between the calibrations, the gain factor of the amplifier is used
    changed.
    The various available calibrations k + 4, k 1, ..., kn in the evaluation device 3 make it possible to subsequently calibrate the measuring arrangement 6, which is built into a molding machine. It's enough if that
    corresponding calibration k +, k2, ..., kn can be called up by the evaluation unit 3. The evaluation unit has various calibrations k4, k>, ..., kn which correspond to different force value ranges. This can help in production
    of injection molding machines with different unit sizes and / or
    different requirements for the force value range the same measuring arrangement
    6 can be installed without selecting the calibration k + 4, k ,, ..., kn beforehand.
    When the injection molding machine is started for the first time, the required calibration k4, k;, ...,
    kn can be selected directly or indirectly by the injection molding machine control.
    3 shows the flow chart of an embodiment of the computer program product according to the invention. In this case, this is integrated into the control of the injection molding machine. The procedure for selecting a calibration k4, k2, ..., kn
    does not change, however.
    In step a, the injection molding machine control 5 checks the required measuring range.
    This depends on various factors, in particular the size of the aggregate.
    If the measuring range to be set is recognized, the injection molding machine control 5 forwards the measuring range to be set to the evaluation unit 3 of the measuring arrangement 6 in step b. The individual components can be analog or digital
    communicate with each other.
    The evaluation unit 3 checks the transmitted measuring range in step c and compares it
    with the available calibrations k4, k>, ..., kn.
    If the evaluation unit 3 receives an invalid signal or if a measuring range is selected for which no calibration k4, k2, ..., kn can be provided, path j of the flowchart is followed and an error message is transmitted to the injection molding machine control 5 in step g. The process is aborted by the error message and / or the injection molding machine control issues a
    corresponding error message is output. Can the desired calibration k +, k ,, ..., ka provided by the evaluation unit
    path i of the flowchart is followed and in step d the
    Desired calibration k + 4, k2, ..., kn of the evaluation unit is set.
    If the desired calibration k +, k>, ..., kn is set, then the evaluation unit sends a confirmation to the injection molding machine control in step e that the
    Calibration k +, k>, ..., kn has been set successfully. In step f the configuration of the calibration k4, k2, ..., ka to the required
    Measuring range completed and the injection molding machine is ready for production
    to start.
    List of reference symbols
    1 measuring membrane
    2 meter
    3 evaluation device
    4 control
    5 Injection molding machine control 6 Measurement setup
    7 measurement signal
    8 output signal
    k4 calibration 1 k2 calibration 2
    Kn calibration n
    Innsbruck, October 9, 2019
    权利要求:
    Claims (1)
    [1]
    Claims
    Measuring arrangement (6) for a molding machine with
    - a measuring membrane (1), which can be deformed by the action of a force,
    - A measuring device (2) for metrologically detecting a deformation of the measuring membrane (1) with the output of a measuring signal (7), and
    - an evaluation device (3) connected to the measuring device (2),
    - Which evaluation device (3) is designed to convert the measurement signal (7) originating from the deformation of the measurement membrane (1) with a force from a first force value range into a first output signal (8) as part of a first calibration (k1), whereby the first output signal (8) is in a previously defined value range,
    characterized in that the evaluation device (3) is designed to
    in the context of at least a second calibration (k>, ..., kn) that from the
    Deformation of the measuring membrane (1) with a force from a second, from the first
    Force value range Measurement signal (7) coming from different force value range in
    to convert a second output signal (8), the second
    Output signal (8) is in the previously defined value range.
    Measuring arrangement (6) according to Claim 1, characterized in that a calibration (k4, k2, ..., kn) of the evaluation unit (3) is designed to set the lower limit of a force value range to the lower limit of the previously defined output value range and the upper limit To map the limit of a force value range to the upper limit of the previously defined output value range and that the previously defined output value range is completely different from the output values of the
    Force value range is covered. Measuring arrangement (6) according to one of Claims 1 or 2, characterized in that
    that the evaluation unit (3) comprises an amplifier which is designed for this purpose
    is to amplify the signal (7) by various gain factors.
    11.
    86312 2
    Measuring arrangement (6) according to one of claims 1 to 3, characterized in that the evaluation device (3) is designed to between the at least
    to switch between two calibrations (k4, k2, ..., kn).
    Measuring arrangement (6) according to Claims 3 and 4, characterized in that the evaluation device (3) is designed to determine the gain factor of the when switching between the at least two calibrations (k4, k>, ..., kn)
    To change amplifier.
    Measuring arrangement (6) according to Claim 4, characterized in that the evaluation unit (3) is designed to switch between the at least two calibrations (k4, k ,, ..., kn) by a signal from the central
    Machine control (5) to control a molding machine.
    Measuring arrangement (6) according to one of claims 4 to 6, characterized in that the evaluation unit (3) is designed to select the desired calibration (k4, ko, ..., kn) by external control pulses, the external
    Differentiate control impulses by their temporal extent.
    Measuring arrangement (6) according to one of claims 1 to 7, characterized in that the data transmission between the individual components is analog or
    is digital.
    Measuring arrangement (6) according to one of Claims 1 to 8, characterized in that
    that the evaluation unit (3) has more than two calibrations (k +, k>, ..., kn).
    Measuring arrangement (6) according to one of Claims 1 to 9, characterized in that the evaluation unit (3) has an external memory which is arranged on the measuring membrane (1) and on which the at least two calibrations
    (k1, k2, ..., kn) are stored.
    Injection unit with measuring arrangement (6) according to at least one of Claims 1 to 10.
    12. Injection unit according to claim 11, characterized in that the measuring arrangement (6) between the screw and the drive of the
    Injection unit is arranged.
    13. Molding machine with injection unit according to one of claims 11 or 12.
    14. A method for providing a calibration for a measuring arrangement (6), wherein a measuring arrangement (6) according to one of claims 1 to 10 is provided and, depending on the forces to be measured by means of the measuring arrangement (6), the first calibration (k4) or the at least a second calibration (k2, ..., kn) selected
    becomes.
    15. Computer program product, comprising instructions which, when the program is executed by a computer, cause it to - receive an input signal relating to the force range - send an output signal to the measuring arrangement according to one of claims 1 to 10, whereby the first calibration (k1 ) or at least a second
    Calibration (k ,, ..., kn) is selected.
    Innsbruck, October 9, 2019
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    引用文献:
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    US4377851A|1980-12-22|1983-03-22|Ford Motor Company|Method for calibrating a transducer for converting pressure variation to frequency variation|
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    CN107290101A|2016-04-12|2017-10-24|原相科技股份有限公司|Pressure measurement method and device for pressure measurement|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50860/2019A|AT522798B1|2019-10-09|2019-10-09|Measuring arrangement for a molding machine|ATA50860/2019A| AT522798B1|2019-10-09|2019-10-09|Measuring arrangement for a molding machine|
    DE102020124918.7A| DE102020124918A1|2019-10-09|2020-09-24|MEASURING ARRANGEMENT FOR A FORMING MACHINE|
    US17/065,975| US20210138709A1|2019-10-09|2020-10-08|Measuring arrangement for a shaping machine|
    CN202011074261.XA| CN112643983A|2019-10-09|2020-10-09|Measuring device for forming machine|
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