• 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:
    Control method for a press installation, and installation, the installation (1000) comprising a servopress (1), a transport device (2) to transport parts (3) from a home position (PO) to the servo press (1), and a controller. The controller controls the movements of the transport device (2) and of the servopress (1) by means of the same master signal, causing a synchronized action of both. In the method, the pieces (3) are transported to the position of origin (PO) and, during their travel to reach said origin position (PO) , the passage of said pieces (3) is detected by a predetermined reference position (PREF) prior to the origin position (PO), and, depending of said detection, the master signal is adjusted to adapt the actuation speed of the servopress (1). (Machine-translation by Google Translate, not legally binding)
    公开号:ES2697058A1
    申请号:ES201730946
    申请日:2017-07-19
    公开日:2019-01-21
    发明作者:Ondarra Pedro Aguirrezabal；Belategi Unai Argarate
    申请人:Fagor Arrasate S Coop；
    IPC主号:
    专利说明:

    [0001]
    [0002] Control method for a press installation, and associated installation
    [0003]
    [0004] SECTOR OF THE TECHNIQUE
    [0005]
    [0006] The present invention relates to control methods for press installations comprising at least one servo press, and to press installations comprising at least one servo press.
    [0007]
    [0008] PRIOR STATE OF THE TECHNIQUE
    [0009]
    [0010] Press installations are known which comprise at least one servo press and a transport device for transporting parts from a position of origin to the servo press. Servo presses are designed to press said parts. The transport device grabs the corresponding part in a position of origin, and transports it to the servopress (to the position in the servo press for the servo press to press it later).
    [0011]
    [0012] To improve the efficiency of the installation it is important to relate the performance of the servo press and the transport device, in such a way that the available time can be used to the maximum. For this, it is known to employ a master signal that is used to control the performances of the servopress and the transport device, in such a way that at the time of generating said master signal the circumstances of both the servopress are taken into account. as the transport device.
    [0013]
    [0014] In the patent document EP2808750A1 a control method for an installation of presses of this type is disclosed. The installation comprises a servopress, a transport device for transporting parts from a source position to the servo press and a controller. The controller controls the movements of the transport device and the servopress using the same master signal, causing a synchronized action of the transport device and the servo press.
    [0015]
    [0016] EXHIBITION OF THE INVENTION
    [0017]
    [0018] The object of the invention is to provide a control method for a press installation, and a press installation, as defined in the claims.
    [0019]
    [0020] A first aspect of the invention relates to a control method for a press installation. The installation comprises at least one servopress, a transport device for transporting parts from a source position to the servo press and a controller. In the method, the controller controls the movements of the transport device and the servo press by a same master signal, thus causing a synchronized actuation of the transport device and the servo press.
    [0021]
    [0022] In the method, in addition, the pieces are transported to the origin position in a certain way, and, during their travel until reaching said origin position, the passage of said pieces is detected by a predetermined reference position prior to the position originally. Depending on this detection, the master signal is adjusted to adapt the actuating speed of the servopress, braking or accelerating it if necessary, and preventing its stop (the operation of the transport device would also be adjusted accordingly).
    [0023]
    [0024] In this way, it is ensured that the performance of the transport device and the servo press from the arrival of the piece to the origin position is always the same regardless of the time it takes for the piece to reach the position, at least until the detection of the passage of a new piece by the reference position, at the same time avoiding dead times of the piece in said position of origin on the one hand, and, above all, that at least the servo press has to stop waiting that a piece arrives at said position of origin on the other hand, which allows, at least with respect to the last step, a decrease in energy consumption.
    [0025]
    [0026] A second aspect of the invention relates to an installation for presses comprising a servopress, a transport device for transporting parts from a position of source to the servo press, and a controller configured to control the transport device and the servo press in a synchronized manner by means of the same master signal.
    [0027]
    [0028] The installation also comprises an additional transport device configured to transport the parts to the origin position in a certain way and a detector that is adapted to detect the passage of the parts in their path caused by the additional transport device and that is communicated. with the controller. The controller is configured to adjust the master signal according to said detection to adapt the speed of performance of the servo press on a piece, and prevent its stop, maintaining said speed, accelerating it or decelerating it. The advantages obtained with the installation of the invention are the same as those obtained for the control method of the invention.
    [0029]
    [0030] These and other advantages and features of the invention will become apparent in view of the figures and the detailed description of the invention.
    [0031]
    [0032] DESCRIPTION OF THE DRAWINGS
    [0033]
    [0034] Figure 1 shows schematically an embodiment of the press installation of the invention, with the servo press of said installation in the open position.
    [0035]
    [0036] Figure 2 shows schematically the installation of presses of Figure 1, with the servo press of said installation in the closed position.
    [0037]
    [0038] DETAILED EXHIBITION OF THE INVENTION
    [0039]
    [0040] A first aspect of the invention relates to a control method that is adapted for a press installation 1000. The installation 1000 comprises at least one servopress 1, a transport device 2 for transporting parts 3 from a position of origin Po to the servo press 1, and a controller (not shown in the figures). In the method, the controller controls the movements of the transport device 2 and the servopress 1 by means of the same master signal, causing a synchronized action of the transport device 2 and the servo press 1.
    [0041]
    [0042] In the method, in addition, the pieces 3 are transported to the origin position P or in a certain way, in a forward direction A, and, during their travel until reaching said origin position P O , the passage of said pieces 3 by a reference position Pref predetermined prior to the origin position Po. Depending on said detection, the master signal is adjusted to adapt the actuation speed of the transport device 2 and the operation of the servo press 1, in order to prevent the stoppage of at least the servo press 1.
    [0043]
    [0044] The controller, depending on the master signal, causes the action of the transport device 2 and the servo press 1 in a certain way (at a certain speed, both performances being synchronized). If the time it takes for a piece 3 to be arranged in the origin position Po (or in the reference position Pref, which is also fixed) would be constant, there would be no need to adjust the master signal, and the performance of the transport device 2 and servo press 1 would always be the same and the most efficient. However, it can not be ensured that this time is constant, at least without this affecting the productivity and / or efficiency of the installation 1000. As a result, this time varies from one piece 3 to another, and thanks to the invention it allows to adapt the performances of the servo press 1 and of the actuation device 2 to said times, in order to maintain the maximum productivity and possible effectiveness, avoiding also unnecessary stops of, at least, the servopress 1. If the time does not vary from a piece 3 to In the next part 3, the adjustment of the master signal would be null (the actuation speed of the servopress 1 and of the actuation device 2 would be maintained).
    [0045]
    [0046] By detecting the passage of the pieces 3 through the reference position P ref , the time between the detection of the passage of a piece 3 by said reference position P ref and the detection of the passage of the previous piece 3 by said position is determined. of reference P ref , the master signal being adjusted according to said elapsed time.
    [0047]
    [0048] The adjustment of the master signal is made to cause an acceleration in the performance of the servopress 1 if the determined time is less than a certain reference time, a deceleration in the performance of servopress 1 if the determined time is greater than the reference time, and a maintenance in the actuation speed of the servopress 1 if the determined time is equal to the reference time. In this way, and for each piece 3, the time elapsed from the passage of the previous piece 3 to the passage of said piece 3 by the reference position Pref is compared with a reference time, the adjustment of the master signal being dependent of the result of said comparison.
    [0049]
    [0050] In the method a reference time is determined for each piece 3, the reference time associated with a piece 3 being the time elapsed between passing through the reference position P ref of the two pieces 3 preceding said piece 3. Thus, the adjustment made in the master signal remains unchanged, the speed of action of the transport device 2 and of the servo press 1 being maintained, until, as a result of the previous comparison, an adjustment is required that modifies said actuation speed.
    [0051]
    [0052] The reference position Pref is further selected in such a way that in the time that piece 3 needs to arrive from said reference position P ref to the home position P o , the servo press 1 performs at least one complete cycle. The complete cycle of the servo press 1 is considered in the invention as its displacement from an open position, where an upper punch 1.0 and a lower punch 1.1 of said servo press 1 are at a maximum distance from each other (figure 1), up to a closing position, where said dies 1.0 and 1.1 imprison part 3 together (figure 2), and from said closing position to the open position. In this way, the master signal can be adjusted freely in response to the comparison between the determined elapsed time and the corresponding reference time, without risk that there is no time to adapt the speed of operation of said servopress 1 in the time interval it needs piece 3 to arrive from the reference position P ref to the origin position P o .
    [0053]
    [0054] The detection of a part 3 passing through the reference position P ref is preferably carried out by means of a laser detector, although it would also be possible to use another type of detectors, such as one for ultrasound, for example.
    [0055]
    [0056] Preferably, in the method the pieces 3 are heated in an oven 6 before being transported to the servo press 1, said pieces 3 being transported from the outlet of the oven 6 to the position of origin Po in the direction of advance A and the reference position Pref being in said path of piece 3.
    [0057]
    [0058] A second aspect of the invention relates to a press installation 1000 comprising at least one servo press 1, a transport device 2 for transporting parts 3 from a source position Po to the servo press 1, and a controller configured to control the device 2 and the servopress 1 in a synchronized manner by means of the same master signal. The controller may comprise a microprocessor, an FPGA or any equivalent device with computing power.
    [0059]
    [0060] The installation 1000 further comprises an additional transport device 7 configured to transport the pieces 3 to the origin position P or , in a forward direction A, and a detector 8 which is adapted to detect the passage of the pieces 3 in its path caused by the additional transport device 7 and that is communicated with the controller.
    [0061]
    [0062] The controller is configured to determine the time elapsed between the detection of the passage of a part 3 by the reference position P ref and the detection of the passage of the previous part 3 by said reference position P ref , by detecting the passage of the pieces 3 by the reference position P ref , and to adjust the master signal according to said elapsed time. The controller is configured to perform the adjustment of the master signal to cause an acceleration in the performance of the servopress 1 if the determined time is less than a certain reference time, a deceleration in the performance of the servopress 1 if the determined time is greater than the reference time, and a maintenance in the speed of action of the servopress 1 if the determined time is equal to the reference time.
    [0063]
    [0064] The controller is further configured to store the time elapsed between passing through the reference position P ref of a part 3 and of the previous part 3, and to use said elapsed time as the reference time in the adjustment of the master signal upon detection. the passage of the next piece 3 by the reference position P ref , said controller being thus configured to establish a reference time for each piece 3. The installation 1000 therefore comprises at least one memory (not shown in the figures) for save said elapsed time at least until it has to be used with the passage of the next piece 3 by the reference position P ref , and said memory can be a specific device or it can be integrated in the controller.
    [0065]
    [0066] The detector 8 is fixedly arranged in the installation 100 in a position in which, in the time that the piece 3 needs to arrive from said reference position Pref to the origin position Po, the servo press 1 performs at least one cycle complete, as previously discussed for the first aspect of the invention (explanation that serves the same way for the second aspect of the invention).
    [0067]
    [0068] The installation 1000 preferably comprises an oven 6 for heating the pieces 3, and the additional transport device 7 is configured and adapted to transport the pieces 3 from the oven 6 to the origin position Po. The additional transport device 7 can comprise, for example, a plurality of driven rollers 70, which rotate in a direction of rotation R and which are arranged one after the other in the advance direction A of the piece 3, said piece being arranged. 3 on said rollers 70 at the exit of the oven 6 to be transported to the origin position Po. Instead of rollers 70, the additional transport device 7 could comprise chains or other mechanical elements that make it possible to move the parts, and which are known in the prior art.
    [0069]
    [0070] The detector 8 is thus arranged in such a way that the reference position P ref is a position along said path of the pieces 3, and, preferably, it is a laser detector, although it would also be possible to use another type of detectors as one of ultrasounds, for example.
    [0071]
    [0072] The explanations that have been given for the first aspect of the invention and have not been replicated in the explanation relative to the second aspect of the invention are also valid for said second aspect of the invention.
    权利要求:
    Claims (15)
    [1]
    Control method for a press installation, the installation (1000) comprising a servopress (1), a transport device (2) for transporting parts (3) from a home position (P o ) to the servo press (1) ), and a controller, wherein in the method, the controller controls the movements of the transport device (2) and the servo press (1) by means of the same master signal, causing a synchronized actuation of the transport device (2) and the servopress (1), characterized in that in the method, the pieces (3) are transported to the position of origin (P O ) in a certain way, and, during its travel until reaching said origin position (P o ), it is it detects the passage of said pieces (3) by a predetermined reference position (P ref ) prior to the origin position (P o ), and, depending on said detection, the master signal is adjusted to adapt the speed of action of the servo press (1) and avoid stopping it.
    [2]
    2. Control method according to claim 1, wherein by detecting the passage of the pieces (3) by the reference position (P ref ) the time between the detection of the passage of a piece (3) by said reference position (P ref ) and the detection of the passage of the previous piece (3) by said reference position (P REF ), the master signal being adjusted according to said elapsed time.
    [3]
    3. Control method according to claim 2, wherein the adjustment of the master signal is performed to cause an acceleration in the performance of the servopress (1) if the determined time is less than a reference time, a deceleration in the performance of the servopress (1) if the determined time is greater than the reference time, and a maintenance in the speed of performance of the servopress (1) if the determined time is equal to the reference time.
    [4]
    4. Control method according to claim 3, wherein a reference time is determined for each piece (3), the reference time associated with a piece (3) being the time elapsed between passing through the reference position (P) ref ) of the two pieces (3) prior to said piece (3).
    [5]
    5. Control method according to any of claims 1 to 4, wherein the position of reference (P ref ) is selected in such a way that in the time that the piece (3) needs to get from said reference position (P ref ) to the origin position (P o ) the servopress (1) makes at least one complete cycle.
    [6]
    Control method according to any of claims 1 to 5, wherein the parts (3) are heated in an oven (6) before being transported to the servo press (1), said parts (3) being transported from the outlet of the oven (6) to the home position (P O ).
    [7]
    7. Control method according to any of claims 1 to 6, wherein the detection of the piece (3) as it passes through the reference position (P ref ) is performed by a laser detector.
    [8]
    8. Installation of presses comprising a servopress (1), a transport device (2) to transport parts (3) from a home position (P o ) to the servo press (1), and a controller configured to control the device of transport (2) and the servo press (1) in a synchronized manner by means of the same master signal, characterized in that the installation (1000) further comprises an additional transport device (7) configured to transport the parts (3) to the origin position (P o ) in a certain way, and a detector (8) that is adapted to detect the passage of the parts (3) in its path caused by the additional transport device (7) and that is communicated with the controller, being the controller configured to adjust the master signal according to said detection to adapt the speed of operation of the servopress (1) and prevent its stop.
    [9]
    9. Press installation according to claim 8, wherein the controller is configured to determine, when the passage of a part (3) is detected by the reference position (P ref ), the time that has elapsed since the passage of the piece (3) above by said reference position (P ref ) up to said detection, and to adjust the master signal according to said determined elapsed time.
    [10]
    The press installation according to claim 9, wherein the controller is configured to perform the adjustment of the master signal to cause an acceleration in the performance of the servopress (1) if the determined time is less than a reference time, a deceleration in the performance of the servopress (1) if the determined time is greater than the reference time, and a maintenance in the speed of action of the servopress (1) if the determined time is equal to the reference time.
    [11]
    11. Press installation according to claim 10, wherein the controller is configured to store the time elapsed between the passage through the reference position (P ref ) of a part (3) and of the previous part (3), and for using said elapsed time as a reference time in the adjustment of the master signal upon detection of the passage of the next part (3) by the reference position (P ref ), said controller being thus configured to establish a reference time for each piece (3).
    [12]
    Press installation according to claim 11, comprising a memory for storing the time elapsed between the passage through the reference position (P REF ) of a part (3) and the previous part (3), at least until have to be used with the passage of the next piece (3) by the reference position (P REF ).
    [13]
    13. Press installation according to any of claims 8 to 12, wherein the detector (8) is fixedly arranged in the installation (100), in a position in which the time needed for the piece (3) to arrive from said reference position (P ref ) to the origin position (P o ) the servopress (1) performs at least one complete cycle.
    [14]
    Press installation according to any of claims 8 to 13, comprising an oven (6) for heating the parts (3), the additional transport device (7) being configured and adapted to transport the parts (3) from the oven (6) to the home position (P o ), passing through the reference position (P ref ).
    [15]
    15. Press installation according to any of claims 8 to 14, wherein the detector (8) is a laser detector.
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    引用文献:
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    CN103056211B|2013-01-29|2015-07-22|广州市康尼斯自动化有限公司|System and method for controlling continuous feeding and high-speed stamping mechanism|
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    法律状态:
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    优先权:
    申请号 | 申请日 | 专利标题
    ES201730946A|ES2697058B2|2017-07-19|2017-07-19|Control method for a press installation, and associated installation|ES201730946A| ES2697058B2|2017-07-19|2017-07-19|Control method for a press installation, and associated installation|
    EP18382399.6A| EP3441155A1|2017-07-19|2018-06-06|Control method for a press installation, and associated installation|
    US16/027,516| US10884399B2|2017-07-19|2018-07-05|Press installation and control method for a press installation|
    CN201810730138.5A| CN109278343B|2017-07-19|2018-07-05|Control method for an extrusion device and related device|
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