• 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:
    Device (1) for producing a reinforcement structure (5) welded together from at least two wires (2, 3, 4) for concrete components, in particular for producing one from at least one lower chord (2), at least one upper chord (3) and at least one diagonal chord (4 ) Lattice girder (5) welded together, comprising at least one welding device (6, 7, 8) for welding the at least two wires (2, 3, 4) at an intersection (30), the device (1) at least one measuring device (9, 10) for measuring at least one welding parameter (11) during the welding of the at least two wires (2, 3, 4) at the intersection (30), at least one control and / or regulating device (12) and at least one measured value transmission device (13, 14) , 15), the at least one measured value transmission device (13, 14, 15) being designed to transmit the measured values (16) of the at least one measured value determined by the at least one measuring device (9, 10) to transmit n welding parameters (11) to the at least one control and / or regulating device (12), and wherein the at least one control and / or regulating device (12) is set up to receive the at least one measuring device (9, 10) During the welding of the at least two wires (2, 3, 4) determined measured values (16) of the at least one welding parameter (11) and / or values (17) calculated therefrom of at least one derived variable (36) with at least one reference value (18, 19 , 27) to the reinforcement structure (5) to be produced and the welding of the at least two wires (2, 3, 4) at the crossing point (30) based on the result of the comparison of the measured values (16) and / or the values calculated therefrom (17) with the at least one reference value (18, 19, 27) to be classified as admissible or inadmissible.
    公开号:AT522422A1
    申请号:T50158/2019
    申请日:2019-02-27
    公开日:2020-10-15
    发明作者:
    申请人:Progress Holding Ag；
    IPC主号:
    专利说明:

    The invention relates to a device for producing a reinforcement structure welded together from at least two wires for concrete components, in particular for producing a lattice girder welded together from at least one lower chord, at least one upper chord and at least one diagonal chord, comprising at least one welding device for welding the at least two wires at an intersection. The invention also relates to a method
    according to the preamble of claim 10.
    From the prior art, it is known to check reinforcement structures randomly to determine whether the welds meet certain quality requirements. The verification takes place manually by
    Shear tests and / or tensile tests are carried out.
    The reinforcement structures are checked at time intervals or according to predefined production quantities. If an error or failure occurs in the welding circuit, it may be that the welds are no longer in order, even without being able to detect this optically. It is only during the next mechanical test that it is determined that the welds no longer meet the quality criteria and that all reinforcement structures that have already been manufactured would have to be withdrawn from circulation, which is only possible to a limited extent, since it is not always clear where the defective reinforcement structures are - you think of a small bricklayer's inventory purchase that has a pile of reinforcement structures
    simply temporarily stored.
    Faulty reinforcement structures can also be a challenge for precast factories, as already manufactured concrete elements have to be replaced and unpredictable follow-up costs, such as the resulting delay in the
    Construction site to be carried.
    In the prior art, quality monitoring does take place in which quality features can be checked by direct measurement. However, there are decisive disadvantages associated with this quality monitoring, namely that the
    Monitoring only takes place on the basis of random samples, combined with the previous ones
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    problems described, and that the effort is very great. Changes in the welding process cannot be systematically recognized and can lead to reinforcement structures that were optically classified as OK, but in reality are faulty.
    Problems that lead to poor results when welding are, for example, the relative position of the wires to be welded to one another, the profile of the wires, electrode wear in the case of resistance welding systems or color markings that are applied to the wires
    are, and accidentally arrive at a weld point to the arrangement.
    The object of the present invention is to at least partially eliminate the disadvantages of the prior art and to provide a device and an improved method which are improved over the prior art and in which there is
    in particular, it is possible to identify problems with the welding in a timely manner.
    This object is achieved by the features of independent claims 1 and 10.
    In the device according to the invention, it is accordingly provided that the device comprises at least one measuring device for measuring at least one welding parameter during the welding of the at least two wires at the intersection, at least one control and / or regulating device and at least one measured value transmission device, the at least one measured value transmission device is designed to transmit the measured values of the at least one welding parameter determined by the at least one measuring device to the at least one control and / or regulating device, and wherein the at least one control and / or regulating device is set up to receive the at least one measuring device during the welding of the at least two wires determined measured values of the at least one welding parameter and / or values calculated therefrom of at least one derived variable with at least one reference value for the production llenden reinforcement structure to compare and the welding of at least two
    Wires at the crossing point based on the result of the comparison of the
    Measured values and / or the values calculated therefrom with the at least one
    To classify the reference value as admissible or impermissible.
    In the present invention, a process monitoring takes place, in the course of which each weld point can be monitored non-destructively and any problems that occur can be recognized immediately. The invention enables a high degree of automation in the manufacture of reinforcement structures to be achieved. The invention is also with
    Can be retrofitted to existing devices with relatively little effort.
    There is an indirect evaluation of quality features by measuring and evaluating process-relevant variables. The at least one reference value can be, for example, a comparison value, a limit value or a
    Act threshold.
    The comparison of the measured values and / or the values calculated therefrom with the at least one reference value can be carried out, for example, by mathematical methods, e.g. Difference formation or transformations and the associated
    Determination of transformation parameters can be carried out.
    If there are deviations, e.g. If a predetermined amount is exceeded, reinforcement structures can immediately be classified as inadmissible, sorted out just-in-time and reproduced. The causes leading to the deviations can be identified and eliminated at the same time. Even creeping changes, such as electrode wear can be detected. It is also an analysis of process variables over longer periods of time and thus a quick process optimization
    and error analysis possible.
    In principle, the present invention is suitable for any type of reinforcement structures that are welded together from at least two wires, e.g. also for reinforcement mesh. In a particular way, however, the invention is suitable for use in the production of lattice girders welded together from at least one lower chord, at least one upper chord and at least one diagonal chord, since here the
    Welding points per lattice girder are made at the same location. The
    4737
    The welding devices used can, apart from any changes in height or angular position when changing from the production of a first lattice girder to the production of a second lattice girder, are operated essentially stationary when the lattice girder is advanced step by step in the welding cycle
    becomes.
    According to a preferred embodiment, it is provided that the at least one welding device is designed to weld the at least two wires in a resistance welding process, and the at least one measuring device is designed to measure at least the current and / or the voltage as welding parameters, preferably wherein the at least one measuring device has at least one Rogowski coil for measuring the current. The current can also be measured differently, for example internally in one
    Welding inverter.
    The resistance welding process is based on electrical resistance heating by applying a power source. This happens according to Joul's law, which states that the amount of heat Qu, generated in an electrical circuit, directly
    is proportional to the electrical work. The following applies to DC sources: On = [run «dt
    It has proven to be advantageous that the at least one control and / or regulating device is set up to use the measured values of the at least one welding parameter determined by the at least one measuring device as
    Calculate derived quantity resistance, power and / or rms values. For example, if a wire to be welded has changed material properties
    and / or rusted, scaled surfaces, the electrical resistance on the surface changes.
    A change in the resistance causes a change in the heat of welding and thus the knot shear strength. These are only possible through surveillance
    Changes recognizable and sortable.
    Alternatively or in addition, it can be provided that the at least one welding device comprises at least one welding electrode, and the at least one measuring device is designed to measure, as a welding parameter, a distance which the welding electrode covers during welding,
    preferably by means of a potentiometer.
    The distance covered by the electrode during the welding time corresponds to the sinking path of the welded wire. The sinking path can be used as a quality criterion for the knot shear strength in wire welds
    will.
    It can be provided that the at least one welding device comprises at least one welding head, preferably movable via a pneumatic cylinder, preferably at least one displacement transducer for measuring one of the
    The distance covered by the welding head during welding is provided.
    It has also been found to be advantageous that the at least one measuring device is designed to measure the at least one welding parameter for a large number of time values during welding, and the at least one control and / or regulating device is designed to do so by assigning the respective To form measured values of the at least one welding parameter at the respective time values, a measuring function and with at least one
    Compare reference function.
    Furthermore, at least one data memory can be provided in which the at least one reference value for the reinforcement structure to be produced can be stored and from which it can be called up by the at least one control and / or regulating device, preferably with the at least one reference value depending on the type of reinforcement structure to be produced ,
    the arrangement of the intersection of the at least two wires within the
    Reinforcement construction and / or wire parameters of the at least two wires
    is storable.
    If a weld is classified as impermissible, it makes sense to
    initiate different measures - alone or in combination with each other:
    It has proven to be advantageous that at least one display device is provided and the at least one control and / or regulating device is set up to transmit a weld classified as impermissible to the at least one display device and / or the at least one control and / or regulation device / or the control device is set up to stop the device or a part of it in the event of a weld classified as impermissible immediately or after completion of the manufacture of the reinforcement structure, and / or the at least one control and / or control device is set up to stop the reinforcement structure at a to be eliminated from a manufacturing process as defective, and / or the at least one control and / or regulating device is set up to include at least the classification of the weld together with identification data of the reinforcement structure and / or to store the crossing point of the at least two wires in at least one data memory. This facilitates the traceability of a specific reinforcement structure and / or a specific weld
    within a specific reinforcement structure.
    In connection with the storage of data in at least one data memory, it can be advantageous to save all the recorded process and system parameters in a database so that e.g.
    Welding protocols can be created.
    It has proven to be particularly advantageous that the at least one control and / or regulating device is set up to operate the device in a reference value setting mode in which one or more welds that have already been carried out can be defined as reference welds. In this context, it makes sense to proceed as follows: There will be
    Reinforcement structures for welds that have already been carried out manually
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    checked. In the course of the manual check, it is determined whether the welds meet quality specifications and can therefore be classified as permissible. If this is the case, these welds are defined as reference welds. At least one value of this weld, preferably stored in a data memory, is thus established as at least one reference value. The manual review of the reinforcement structures includes, for example, the review
    the knot shear strength and / or the verification of the material properties.
    Meaningful monitoring requires in-depth knowledge of the welding process and the possible types of failure of the welding process. To implement the measuring system, so-called setup welds can be carried out in a learning mode which is separate from the reference value setting mode, with which e.g. Trigger thresholds or offset corrections can be set up. These setup welds are carried out with the same welding parameters that are then used during the
    Production is welded.
    In the method according to the invention for the non-destructive monitoring of a weld of at least two wires at a crossing point in the manufacture of at least one reinforcement structure welded together from the at least two wires for concrete components, in particular in the manufacture of a lattice girder welded together from at least one lower chord, at least one upper chord and at least one diagonal chord, in The following process steps are provided for a device according to the invention:
    the at least one measuring device measures at least one welding parameter during the welding of the at least two wires at the A crossing point,
    the at least one measured value transmission device transmits the measured values of the at least one welding parameter determined by the at least one measuring device to the at least one control and / or regulating device,
    - The at least one control and / or regulating device compares that of the at least one measuring device during the welding of the
    at least two wires determined measured values of the at least one
    Welding parameters and / or values calculated therefrom of at least one derived variable with at least one reference value for the reinforcement structure to be produced, and
    the at least one control and / or regulating device classifies the welding of the at least two wires at the intersection as permissible or based on the result of the comparison of the measured values and / or the values calculated therefrom with the at least one reference value
    inadmissible.
    In this method it has proven to be advantageous that the welding of the at least two wires is classified as permissible or impermissible in the course of comparing the measured values and / or the values calculated therefrom with the at least one reference value based on at least one predetermined quality criterion, preferably with it at least one predetermined
    The quality criterion is a deviation.
    As with the device according to the invention, it has also been found to be particularly favorable in the method according to the invention that the at least one welding device is designed to weld the at least two wires in a resistance welding process, and the at least one measuring device during the welding of the at least two wires to the The intersection point measures the current and / or the voltage as a welding parameter, preferably the at least one control and / or regulating device from the measured values of the at least one welding parameter determined by the at least one measuring device as a derived variable of resistance, power
    and / or effective values are calculated.
    Furthermore, it can be provided that the at least one welding device comprises at least one welding electrode and / or at least one welding head that can be moved, preferably via a pneumatic cylinder, and the at least one measuring device during the welding of the at least two wires at the crossing point comprises a distance as a welding parameter, which the welding electrode
    and / or the welding head moves back, measures.
    It is also advantageous that the at least one measuring device measures the at least one welding parameter for a large number of time values during welding, and the at least one control and / or regulating device forms a measuring function by assigning the respective measured values of the at least one welding parameter to the respective time values and with at least one reference function
    compares.
    It can be provided that at least one display device is provided and the at least one control and / or regulating device transmits a weld classified as impermissible to the at least one display device, and / or the at least one control and / or regulating device transmits the device or a part of which, in the event of a weld classified as impermissible, stops immediately or after completion of the manufacture of the reinforcement structure, and / or the at least one control and / or regulating device removes the reinforcement structure as defective from a manufacturing process in the event of a weld classified as impermissible, and / or the at least one Control and / or regulating device at least the classification of the weld together with identification data of the reinforcement structure and / or the intersection of the at least two wires in
    stores at least one data memory.
    And finally it has proven to be advantageous that the device is operated in a method step by means of the at least one control and / or regulating device in a reference value setting mode, with one or more welds that have already been carried out as
    Reference welds are defined.
    Further details and advantages of the invention will be explained in more detail below on the basis of the description of the figures with reference to the drawings
    explained. Show in it:
    1a), b) a schematically illustrated reinforcement structure in the form of a lattice girder in a side view (partial figure a)) and in a
    Cross-sectional view (part b)),
    2a-d) schematically illustrated cross-sectional views of a lattice girder, in which sub-figure a) shows a target state and sub-figures b) -d) show examples of lattice girders with welds classified as inadmissible: in sub-figure b) is the upper flange and in sub-figure c) one of the diagonal belts is too high, in part d) there is color on the upper belt in the area of a point of intersection with the right diagonal belt,
    3 shows a schematic cross-sectional view of a lattice girder together with a welding device for welding the top chord with two diagonal chords, a welding device for welding one of the two diagonal chords to a first lower chord and a welding device for welding the other of the two diagonal chords to a second lower chord,
    4 shows a schematic representation of a diagram in which measured values of a welding parameter or calculated values of a derived variable are shown as a function of time,
    5 shows a schematically illustrated block diagram of a first exemplary embodiment of the device, and
    6a) -c) a schematically illustrated top view from above of a second embodiment of the device, divided into three sub-figures a) -c), with the part of the device shown in sub-figure a) on the left, that shown in sub-figure b) Part of the device in the middle and the one in the
    Part of the figure c) shown part of the device is arranged on the right.
    Figures 1a) and 1b) show a schematically illustrated reinforcement structure 5 in the form of a lattice girder, in the manufacture of which the present invention is used in a particularly favorable manner: In the form specifically shown, the lattice girder 5 comprises a lower chord arrangement with two lower chords 2, one in a certain height to the lower chord arrangement arranged upper chord 3 and two between the lower chords 2 and the upper chord 3 zigzag running back and forth diagonal wires 4. In the partial figure 16) are several crossing points
    30 that have to be welded are shown.
    Figures 2b) to 2d) show examples of lattice girders with welds classified as inadmissible - in comparison to one in partial figure 2a)
    Lattice girders shown with welds classified as permissible:
    In the partial figure 2b) the upper chord is arranged too high relative to the lower chord arrangement. This error can occur in particular when changing from a low lattice girder to a high lattice girder. A top chord that is too high goes too low
    welded diagonal belts.
    A top chord that is too high can be recognized with the aid of the present invention through the deviation in several signal curves and parameters, such as the fact that the resistance drops due to the slipping of the top chord, which leads to an increase in the effective current value. Slipping of the top chord can also be reflected in the entire route. The overall course of the path reflects the path which both upper flange welding heads cover during the welding process (see also FIG. 3). Because the top belt slides up, the welding heads cover a greater distance. At the same time, there cannot be any significant electrical parameters
    Draw off deviations.
    As at weld points on the upper chord 3, deviations in the lattice girder geometry can also occur at weld points on the lower chords 2. The last and the first points are susceptible to a diagonal wire change, since the diagonal wires 4 can only be fixed with difficulty. The partial figure 2c) shows
    for example a situation in which the right diagonal belt 4 is too high.
    Analogous to the geometrical deviations on the upper chord 3, these can also occur on the lower chord 2, especially on the strongly deviating path course within the scope of the present
    Invention are recognized.
    Geometrical deviations on the lower chord can e.g. caused by incorrectly welded diagonal wires 4 on the upper flange 3. If the welding heads on the upper flange 3 do not run synchronously, but rather minimally offset in time, the faster one can
    Move the welding head the inserted wires. As a result, a
    Diagonal wire 4 is welded higher. This geometry deviation can be at the
    Can be detected at the measuring point on the upper flange 3 and / or at the measuring point on the lower flange 2.
    The higher welded diagonal wire 4 on the upper flange 3 has the consequence that the diagonal wire 4 no longer protrudes from the lower flange 2. As a result, only one spot weld is formed instead of two. This becomes visible in all signal curves, since the larger contact surface increases the resistance and the current density decreases
    and the route consequently covers a smaller penetration depth.
    In the partial figure 2d) a situation is shown schematically in which a layer of paint 31 on the upper belt 3 in the area of a point of intersection with the right one
    Diagonal belt 4 is arranged.
    Many coils are color-coded with the help of spray cans, in particular to prevent the different steel grades from being mixed up. Furthermore, the wire diameter is often sprayed onto the coil for a better overview.
    If this color marking hits a welding point exactly, this represents a significantly higher surface resistance, which can only be broken with difficulty in the short welding time. Due to the higher resistance, the
    Insufficient weld seam or not at all.
    Within the scope of the present invention, this error can be recognized, for example, in a deviation in the dynamic resistance curve, the break-in of which is pushed back in time. In addition, the inadequate weld seam can be detected along the path, which flattens out considerably due to the non-welded wire.
    FIG. 3 shows a schematically illustrated cross-sectional view of a lattice girder 5 together with a welding device 6 for welding the upper chord 3 with two diagonal chords 4, a welding device 7 for welding one of the two diagonal chords 4 to a first lower chord 2 and a welding device 8 for
    Welding the other of the two diagonal belts 4 to a second lower belt 2.
    The welding device 6 for welding the top chord 3 to the two diagonal chords 4 comprises two welding electrodes 20, between which the arrangement of the first diagonal wire 4, top chord 3 and second diagonal wire 4 can be arranged and
    is weldable in the resistance welding process.
    Measuring devices 9, 10 are provided for measuring welding parameters 11 while the wires 3, 4 are being welded. Specifically, the measuring device 9 is designed to measure the current and / or the voltage as the welding parameter 11, the measuring device 9 having a Rogowski coil for measuring the current. The two measuring devices 10 are each designed to measure, as a welding parameter 11, a distance which the welding electrode 20 covers during welding, for example by means of a potentiometer. The welding electrodes 20 can, for example, be moved via a pneumatic cylinder, the cylinder or the welding electrodes 20 having a displacement transducer for measuring the distance covered during welding
    Distance are coupled.
    At the upper chord measuring point there are two movable welding heads which extend with a pneumatic cylinder and both diagonal wires 4 to the
    Weld the top chord wire 3.
    The displacement transducers can each be attached to the guide shafts of the electrode holder. The transducers must be placed in such a way that they meet the
    reflect the complete stroke of the cylinder during the welding process.
    Due to the very high welding currents of around 10-20 kA, the current must be measured indirectly. For this, a Rogowski coil can be used, for example, which is tied around the current band of the right upper chord welding head. Alternatively, the current can also be supplied internally in a welding inverter provided
    be measured.
    The applied voltage can be picked up directly at the electrode holders.
    The measurement setup on the two lower chord welding devices 7, 8 is analogous to the measurement setup on the upper chord welding device 6. The displacement sensors are attached to the respective guide shafts of the electrode holder. In turn just be
    shielded cables are used.
    The arrangement shown in FIG. 3 is integrated into a device 1 - for example the one shown in FIG. 5 - which comprises at least one control and / or regulating device 12 and at least one measured value transmission device 13, 14, 15, the at least one measured value transmission device 13, 14 , 15 is designed to transmit the measured values 16 of the at least one welding parameter 11 determined by the at least one measuring device 9, 10 to the at least one control and / or regulating device 12, and the at least one control and / or regulating device 12 is set up for this , the measured values 16 of the at least one welding parameter 11 determined by the at least one measuring device 9, 10 during the welding of the at least two wires 2, 3, 4 and / or values 17 calculated therefrom of at least one derived variable 36 with at least one reference value 18, 19, 27 on the reinforcement structure to be produced ion 5 and the welding of the at least two wires 2, 3, 4 at the crossing point 30 based on the result of the comparison of the measured values 16 and / or the values 17 calculated therefrom with the at least one reference value 18,
    19, 27 to be classified as admissible or inadmissible.
    How this comparison can be made is shown by way of example in FIG. 4, which contains a schematic representation of a diagram in which measured values 16 of a welding parameter 11 or calculated values 27 of a derived variable 36 in
    Dependence on the time 37 are shown.
    As welding parameters 11, for example, the current strength, voltage and / or
    the electrode path can be measured by means of the measuring devices 9, 10.
    From the recorded measured values 16 of the current intensity and the current voltage, the resistance and / or
    of the performance values 17 are calculated. In addition, the welding time is about the length
    the current duration can be determined. Generally speaking, the at least one control and / or regulating device 12 is set up to use the measured values 16 of the at least one welding parameter 11 determined by the at least one measuring device 9 as a derived variable 36, e.g. Resistance, power
    and / or to calculate effective values.
    A wide variety of mean, final or differential values of
    Welding parameters 11 or derived variables 36 can be determined.
    Both individual measured values 16 and / or individual calculated values 17 as well as time profiles can be used for evaluation and quality assessment. In this context, it makes sense that the measuring devices 9, 10 are designed to measure the at least one welding parameter 11 for a large number of time values 22 during the welding, and the at least one control and / or regulating device 12 is designed to to form a measuring function 23 by assigning the respective measured values 16 of the at least one welding parameter 11 to the respective time values 22 and to compare it with at least one reference function 24, 25, 26. The at least one reference function can be, for example, a comparison function 26 that was determined in the course of a reference welding, a lower limit function 25 or an upper limit function
    Act limit function 26.
    A weld can be classified as permissible if each curve of a measurement lies within a respective bandwidth defined by an upper and lower limit curve 25, 26. Not only the end value or a mean value can be compared
    but also the course of the curve over time.
    A permissible scatter band can be generated, for example, from manually checked weld connections that have been declared permissible. Ideally, such a reference band is only formed from tested welds. Since the work involved in testing the welded joint is enormous, the reference tape from some tested welds and some similar ones cannot be used at the beginning
    tested welds. Little by little they can't
    tested welds are sorted out, so that the reference band only
    consists of tested welded joints.
    The welding of the at least two wires 2, 3, 4 in the course of comparing the measured values 16 and / or the values 17 calculated therefrom with the at least one reference value 18, 19, 27 can be classified as permissible or impermissible on the basis of at least one predetermined quality criterion 38. This can be, for example, a deviation, as shown schematically in FIG
    is indicated by a double arrow at curves 23 and 26.
    The signal curves can be recorded for each welded node and compared with the limit curves. If a value does not run within the specified range, JjJust-in-time is determined that the weld at node x is not as required
    is done: the lattice girder can be sorted out.
    If the curves change gradually within a certain time, such as a few hours, it can be assumed that various components of the welding circuit have deteriorated. Typical changes are around
    worn and / or dirty contact surfaces of the electrodes.
    If welds are permitted, the chronological progressions or the individual values of the selected monitoring parameters can be learned in the form of reference bands. If welds are now recorded that have a similar signal course, there is a high probability that these will also be recorded
    be allowed.
    If the recorded measured values deviate from a reference band, they are declared as inadmissible and rejected. These corresponding welds apply
    now to check and eliminate any failure in the welding circuit.
    FIG. 5 shows a schematically represented block diagram of a first exemplary embodiment of a device 1 for producing a lattice girder 5 welded together from two lower chords 2, an upper chord 3 and two diagonal chords 4,
    comprising welding devices 6, 7, 8 for welding the wires 2, 3, 4
    Crossing points 30, the device 1 comprising measuring devices 9, 10 for measuring at least one welding parameter 11 during the welding of the wires 2, 3, 4 at the crossing points 30, a control and / or regulating device 12 and measured value transmission devices 13, 14, 15, wherein The measured value transmission devices 13, 14, 15 are designed to transmit the measured values 16 of the at least one welding parameter 11 determined by the measuring devices 9, 10 to the control and / or regulating device 12, and the control and / or regulating device 12 is set up to do so is the measured values 16 of the at least one welding parameter 11 determined by the measuring devices 9, 10 during the welding of the wires 2, 3, 4 and / or values 17 calculated therefrom of at least one derived variable (36) with at least one reference value 18, 19, 27 to be compared to the lattice girder 5 to be produced and the welds of the wires 2, 3, 4 the intersection points 30 based on the result of the comparison of the measured values 16 and / or the values 17 calculated therefrom with the at least one reference value 18, 19, 27 as permissible
    or classified as impermissible.
    The control and / or regulating device 12 communicates with a
    Lattice girder welding machine 32.
    The device 1 also includes a data memory 28 in which the at least one reference value 18, 19, 27 for the lattice girder 5 to be produced can be stored and saved
    which it can be called up by the control and / or regulating device 12.
    Ideally, the at least one reference value 18, 19, 27 is a function of the type of lattice girder 5 to be produced, the arrangement of the crossing points 30 of the wires 2, 3, 4 within the lattice girder 5 and / or of the wire parameters of the wires
    2, 3, 4 can be saved.
    Modern lattice girder welding machines can produce different types of lattice girders, which also differ significantly in terms of the individual geometry parameters, such as the diagonal angle. According to DIN 488-5, the different types of lattice girders must be assessed separately. In addition, it applies
    different possible diameter combinations and also the different
    Welding / measuring points for the upper chord and both lower chords to be considered separately. Different lattice girder heights and lengths do not need to be considered separately, as the welding parameters are only diameter-specific and are based on
    of different heights and lengths do not change.
    The device 1 further comprises a display device 29 and the control and / or regulating device 12 is set up to declare one to be inadmissible
    to transmit classified welding to the display device 29.
    The control and / or regulating device 12 can also be set up to control the device 1 or a part thereof, e.g. to stop the lattice girder welding machine 32 in the event of a weld classified as impermissible immediately or after completion of the manufacture of a lattice girder 5, and / or to remove the lattice girder 5 as defective from a manufacturing process in the event of a weld classified as impermissible, and / or at least the classification of a weld together with identification data of the lattice girder 5 and / or the corresponding crossing point 30 of the two wires 2, 3, 4 concerned
    to be stored in the data memory 28.
    Finally, the control and / or regulating device 12 can be set up to operate the device 1 in a reference value setting mode in which one or more welds that have already been carried out are used as reference welds
    are determinable.
    Figures 6a) to 6c) show a schematic top view of a second embodiment of the device 1, divided into three sub-figures 6a), 6b) and 6c), the part of the device 1 shown in the sub-figure 6a) on the left, the in the partial figure 6b) shown part of the device 1 in the middle and in the partial figure 6c)
    shown part of the device 1 is arranged on the right.
    This device 1 is designed for the production of lattice girders 5. The wires 2, 3, 4 required for production are stored on reels 33. The wires 2, 3, 4 unwound from the reels 33 pass through a straightening device 34 with
    which the wires 2, 3, 4 are straightened. Then the wires 2,
    3, 4 are fed to a lattice girder welding machine 32 by one or more feed devices. This includes one or more welding devices 6, 7, 8, as shown in FIG. The finished lattice girders 5 can be placed in an outlet 35
    be deposited.
    Advantageously, the device 1 is designed to continuously produce lattice girders 5, the apparatus 1 comprising a device for adjusting the height of the upper chord 3 during the continuous manufacture of the lattice girder 5 and a cutting device for cutting the upper chord 3 so that the height 39 of the lattice girder 5 is between two consecutive regular welding cycles
    is changeable.
    Innsbruck, February 26, 2019
    权利要求:
    Claims (1)
    [1]
    Patent claims:
    1. Device (1) for producing a reinforcement structure (5) welded together from at least two wires (2, 3, 4) for concrete components, in particular for producing one from at least one lower chord (2), at least one upper chord (3) and at least one diagonal chord (4) welded together lattice girder (5), comprising at least one welding device (6, 7, 8) for welding the at least two wires (2, 3, 4) at a crossing point (30), characterized in that the device (1) at least a measuring device (9, 10) for measuring at least one welding parameter (11) during the welding of the at least two wires (2, 3, 4) at the intersection (30), at least one control and / or regulating device (12) and at least one Measured value transmission device (13, 14, 15), the at least one measured value transmission device (13, 14, 15) being designed to transmit the measured value determined by the at least one measuring device (9, 10) e (16) of the at least one welding parameter (11) to be transmitted to the at least one control and / or regulating device (12), and wherein the at least one control and / or regulating device (12) is set up to be controlled by the at least one measuring device ( 9, 10) during the welding of the at least two wires (2, 3, 4) determined measured values (16) of the at least one welding parameter (11) and / or values (17) calculated therefrom of at least one derived variable (36) with at least one reference value (18, 19, 27) to the reinforcement structure (5) to be produced and the welding of the at least two wires (2, 3, 4) at the intersection (30) based on the result of the comparison of the measured values (16) and / or the values (17) calculated therefrom with the at least one
    Classify reference value (18, 19, 27) as admissible or impermissible.
    2. Device (1) according to claim 1, wherein the at least one welding device (6, 7, 8) is designed to weld the at least two wires (2, 3, 4) in a resistance welding process, and the at least one
    Measuring device (9) is designed as a welding parameter (11) at least
    to measure the current and / or the voltage, preferably the at least one measuring device (9) for at least one Rogowski coil
    Having measurement of the current.
    Device (1) according to claim 2, wherein the at least one control and / or regulating device (12) is set up to use the measured values (16) of the at least one welding parameter (11) determined by the at least one measuring device (9) as a derived variable (36 )
    Calculate resistance, power and / or rms values.
    Device (1) according to one of the preceding claims, wherein the at least one welding device (6, 7, 8) comprises at least one welding electrode (20, 21), and the at least one measuring device (10) is designed to use a welding parameter (11) To measure the distance covered by the welding electrode (20) during welding,
    preferably by means of a potentiometer.
    Device (1) according to one of the preceding claims, wherein the at least one welding device (6, 7, 8) comprises at least one, preferably via a pneumatic cylinder, movable welding head, preferably at least one displacement transducer for measuring a distance covered by the welding head during welding
    is provided.
    Device (1) according to one of the preceding claims, wherein the at least one measuring device (9, 10) is designed to measure the at least one welding parameter (11) for a plurality of time values (22) during welding, and the at least one control and / or control device (12) is set up to form a measuring function (23) by assigning the respective measured values (16) of the at least one welding parameter (11) to the respective time values (22) and with at least
    to compare a reference function (24, 25, 26).
    7. Device (1) according to one of the preceding claims, wherein at least one data memory (28) is provided in which the at least one reference value (18, 19, 27) for the reinforcement structure (5) to be produced can be stored and from which it can be stored by the at least a control and / or regulating device (12) can be called up, preferably with the at least one reference value (18, 19, 27) depending on the type of reinforcement structure (5) to be produced, the arrangement of the crossing point (30) of the at least two wires (2, 3, 4) can be stored within the reinforcement structure (5) and / or by wire parameters of the at least two wires (2, 3, 4).
    8. Device (1) according to one of the preceding claims, wherein at least one display device (29) is provided and the at least one control and / or regulating device (12) is set up to weld a weld classified as inadmissible to the at least one display device (29 ) and / or the at least one control and / or regulating device (12) is set up to apply the device (1) or a part thereof to the reinforcement structure (5) immediately or after the production of the reinforcement structure (5) in the event of a weld classified as impermissible stop, and / or the at least one control and / or regulating device (12) is set up to remove the reinforcement structure (5) as defective from a manufacturing process in the event of a weld classified as impermissible, and / or the at least one control and / or Control device (12) is set up to at least the classification of the weld ßung together with identification data of the reinforcement structure (5) and / or the crossing point (30) of the at least two wires (2, 3, 4) in at least one
    To store data memory (28).
    9. Device (1) according to one of the preceding claims, wherein the at least one control and / or regulating device (12) is set up to operate the device (1) in a reference value setting mode in which one or more welds already carried out as
    Reference welds are definable.
    23737
    - the at least one measuring device (9, 10) measures at least one welding parameter (11) during the welding of the at least two wires (2, 3, 4) at the intersection (30),
    - the at least one measured value transmission device (13, 14, 15) transmits the measured values (16) of the at least one welding parameter (11) determined by the at least one measuring device (9, 10) to the at least one control and / or regulating device (12),
    - The at least one control and / or regulating device (12) compares the measured values (16) of the at least one welding parameter (11) determined by the at least one measuring device (9, 10) during the welding of the at least two wires (2, 3, 4) ) and / or values (17) calculated therefrom of at least one derived variable (36) with at least one reference value (18, 19, 27) for the reinforcement structure (5) to be produced, and
    - The at least one control and / or regulating device (12) classifies the welding of the at least two wires (2, 3, 4) at the intersection (30) based on the result of the comparison of the measured values (16) and / or those calculated therefrom Values (17) with the
    at least one reference value (18, 19, 27) as admissible or impermissible.
    11. The method according to claim 10, wherein the welding of the at least two wires (2, 3, 4) in the course of the comparison of the measured values (16) and / or the values (17) calculated therefrom with the at least one reference value (18, 19, 27)
    on the basis of at least one predetermined quality criterion (38) as permissible
    13th
    14th
    15th
    5
    or is classified as impermissible, preferably the at least one predetermined quality criterion (38) being a deviation.
    Method according to claim 10 or 11, wherein the at least one welding device (6, 7, 8) is designed to weld the at least two wires (2, 3, 4) in a resistance welding process, and the at least one measuring device (9) during the Welding the at least two wires (2, 3, 4) at the intersection (30) as welding parameters (11) measures at least the current and / or the voltage, preferably wherein the at least one control and / or regulating device (12) is based on the of the at least one measuring device (9) determined measured values (16) of the at least one welding parameter (11) as derived variable (36) resistance, power and / or effective values
    calculated.
    Method according to one of Claims 10 to 12, wherein the at least one welding device (6, 7, 8) comprises at least one welding electrode (20, 21) and / or at least one welding head, preferably movable via a pneumatic cylinder, and the at least one measuring device (10) during the welding of the at least two wires (2, 3, 4) at the intersection (30) as a welding parameter (11) a distance which the
    Welding electrode (20) and / or the welding head moves back, measures.
    Method according to one of Claims 10 to 13, wherein the at least one measuring device (9, 10) measures the at least one welding parameter (11) for a plurality of time values (22) during the welding, and the at least one control and / or regulating device ( 12) a measuring function by assigning the respective measured values (16) of the at least one welding parameter (11) to the respective time values (22)
    (23) and compares it with at least one reference function (24, 25, 26).
    The method according to any one of claims 10 to 14, wherein at least one
    Display device (29) is provided and the at least one control
    and / or control device (12) transmits a weld classified as inadmissible to the at least one display device (29), and / or the at least one control and / or regulating device (12) transmits the device (1) or a part of it to the at least one as inadmissible classified welding stops immediately or after completion of the manufacture of the reinforcement structure (5), and / or the at least one control and / or regulating device (12) removes the reinforcement structure (5) as defective from a manufacturing process in the event of a weld classified as impermissible, and / or the at least one control and / or regulating device (12) at least the classification of the weld together with identification data of the reinforcement structure (5) and / or the intersection (30) of the at least two wires (2, 3, 4) in
    stores at least one data memory (28).
    16. The method according to any one of claims 10 to 15, wherein the device (1) is operated in a method step by means of the at least one control and / or regulating device (12) in a reference value setting mode, wherein one or more welds already carried out as
    Reference welds are defined.
    Innsbruck, February 26, 2019
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    同族专利:
    公开号 | 公开日
    EP3930951A1|2022-01-05|
    AT522422B1|2022-01-15|
    WO2020173685A1|2020-09-03|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50158/2019A|AT522422B1|2019-02-27|2019-02-27|Device for producing a reinforcement structure welded together from at least two wires|ATA50158/2019A| AT522422B1|2019-02-27|2019-02-27|Device for producing a reinforcement structure welded together from at least two wires|
    PCT/EP2020/053166| WO2020173685A1|2019-02-27|2020-02-07|Apparatus for producing a reinforcement construction welded together from at least two wires|
    EP20704016.3A| EP3930951A1|2019-02-27|2020-02-07|Apparatus for producing a reinforcement construction welded together from at least two wires|
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