EP3639942B1 - Machine à presser pourvu de système de détection destiné à la détection automatisée d'un agencement de mâchoire de compression - Google Patents

Machine à presser pourvu de système de détection destiné à la détection automatisée d'un agencement de mâchoire de compression Download PDF

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Publication number
EP3639942B1
EP3639942B1 EP18201502.4A EP18201502A EP3639942B1 EP 3639942 B1 EP3639942 B1 EP 3639942B1 EP 18201502 A EP18201502 A EP 18201502A EP 3639942 B1 EP3639942 B1 EP 3639942B1
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EP
European Patent Office
Prior art keywords
press
workpiece
sensor
sensor system
pressing
Prior art date
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Active
Application number
EP18201502.4A
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German (de)
English (en)
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EP3639942A1 (fr
Inventor
Matthias Ruch
Rudolf Kreuzer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Emerson Professional Tools AG
Original Assignee
Von Arx AG
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Application filed by Von Arx AG filed Critical Von Arx AG
Priority to EP18201502.4A priority Critical patent/EP3639942B1/fr
Priority to US16/574,289 priority patent/US11611186B2/en
Priority to CN201910992321.7A priority patent/CN111069444B/zh
Publication of EP3639942A1 publication Critical patent/EP3639942A1/fr
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/042—Hand tools for crimping
    • H01R43/0428—Power-driven hand crimping tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/10—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting fittings into hoses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
    • B21D39/048—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods using presses for radially crimping tubular elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
    • B25B27/146—Clip clamping hand tools
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/048—Crimping apparatus or processes

Definitions

  • the present invention relates to a pressing machine for plastically deforming a tubular workpiece, in particular a fitting. Furthermore, the invention relates to a method for operating such a press machine, a press jaw arrangement for coupling to a press machine, and also a tubular workpiece, in particular a fitting.
  • tubes can be soldered or welded to one another. It is also known to insert the end of a small pipe into the end of a larger pipe and then to press both pipe ends together.
  • press machines such as pipe press machines
  • a fitting can be designed, for example, as a pipeline fitting, which can be used as a connecting piece for a pipeline.
  • a fitting can be made of different materials, for example copper, aluminium, plastic, composite and/or (stainless) steel.
  • a (pipe) pressing machine can include pressing jaws made of metals such as steel, aluminum or the like, which can be interchangeable. Furthermore, the pressing machine can include exchangeable pressing tongs, which have the pressing jaws. Other die assemblies, including dies, are also known.
  • a force can be exerted on the fitting by means of the pressing jaws or the pressing jaw arrangement in order to plastically deform it in such a way that the fitting can be deformed as much as possible fits snugly, tightly and firmly against a pipe.
  • the pressing jaws can be pressed together in order to press a fitting arranged between them over a pipe.
  • the press machine can be hand-held and operated by a drive. Typically, electric and/or hydraulic drives are used.
  • the pressing jaws or the pressing jaw arrangement are workpiece-specific.
  • different press jaws/press jaw arrangements are used for pressing metal fittings, such as copper or (stainless) steel fittings, than for pressing plastic fittings.
  • the pressing machine can be adapted to different workpieces, in particular fittings, by exchanging the pressing jaws/pressing jaw arrangement.
  • the pressing always takes place using the maximum pressing force, regardless of the press jaws actually used or the press jaw arrangement used and/or the fittings used.
  • this can be disadvantageous since, for example, plastic fittings can be pressed with a much lower pressing force than metal fittings. Exploiting the maximum pressing force thus leads to an unnecessary waste of energy.
  • each type of press jaw used or press jaw arrangement used has its own characteristic pressing characteristics.
  • the pressing characteristics can depend, for example, on the transmission ratio of the pressing jaw arrangement, the material of the pressing jaws and the workpiece to be pressed.
  • a workpiece such as a steel fitting should be pressed differently than a plastic fitting, for example, in order to guarantee the best possible form fit and a long service life for the pressed fitting.
  • the present invention is therefore based on the object of achieving the most optimal and material-friendly pressing of a fitting with a pipe.
  • an improved (pipe) pressing machine is to be provided which enables such pressing.
  • EP 2 794 191 A1 relates to a pressing device with a data acquisition element, wherein at least one data acquisition element is a camera.
  • the camera is also used as a data acquisition element for documenting pressing processes.
  • the present invention relates to a press machine for plastically deforming a tubular workpiece.
  • the tubular workpiece can be a fitting, for example, and can be pressed with these to connect two pipes.
  • the fitting can consist, for example, at least partially of copper, aluminum, plastic, composite and/or (stainless) steel.
  • the pressing machine in turn, can be set up to plastically deform such a tubular workpiece, such as a fitting, for example, in such a way that it is connected to a piece of tubing arranged in the fitting.
  • a (compression) pressing can be carried out by means of the pressing machine in order to connect a fitting to a pipe in a non-detachable manner with a positive and/or non-positive fit.
  • the fitting can be specified according to the DIN EN 1254-7 standard, for example.
  • the press machine further includes a press jaw receptacle for coupling a press jaw assembly to the press machine.
  • the pressing jaw receptacle couples to the pressing jaw arrangement in such a way that the pressing machine can drive pressing jaws of the pressing jaw arrangement.
  • the coupling takes place via at least one coupling bolt.
  • the pressing jaws of the pressing jaw arrangement can be set up to be movable relative to one another and, for example, be closed and also moved apart, so that in the moved apart state, for example, a tubular workpiece, such as a fitting, can be arranged between the pressing jaws.
  • the pressing jaws of the pressing jaw arrangement can be exchangeable. Different press jaw arrangements and/or press jaws can be designed for different tasks, such as pressing, crimping, or cutting.
  • a press jaw arrangement typically comprises at least two press jaws.
  • the press machine also includes a drive which is set up to drive the press jaw arrangement in order to apply a force to the workpiece.
  • the drive can include an electric motor, a pneumatic and/or a hydraulic drive unit and a gear.
  • the pressing jaws of the pressing jaw arrangement can be moved relative to one another by means of the drive and can be driven, for example, into the closed state.
  • the drive can at least partially apply the force necessary to deform the tubular workpiece, for example to connect a fitting to a length of pipe.
  • the drive can be connected to the pressing jaw arrangement directly or via a gear mechanism in order to transmit the driving force to the pressing jaw arrangement and the pressing pack.
  • the force acting on the pressing jaws or the pressing jaw arrangement can be set variably, for example by correspondingly varying motor parameters or other parameters (such as gear settings).
  • the pressing machine includes a sensor system that is set up to identify a pressing jaw arrangement and to provide corresponding sensor data.
  • the sensor system can be set up to recognize an individual pressing jaw arrangement, or also to recognize a pressing jaw arrangement according to its type.
  • the sensor system can include detection means (e.g. a sensor) as an interface to the pressing jaw arrangement, and appropriate evaluation means, which can include a processor and/or memory with appropriate program code.
  • the detection means can be provided separately from the evaluation means on the press machine.
  • the sensor system can be supplied via an energy source arranged on the press machine, which can also feed the drive or the electric motor.
  • the sensor system can also be activated by a user/operator by means of a button in order to carry out the identification.
  • the sensor system can be set up to detect an exchange and in particular the coupling of a press jaw arrangement with the press jaw receptacle and to carry out the identification after the exchange or the coupling has been recognized.
  • the identification therefore does not necessarily mean that a single press jaw arrangement is identified as an individual press jaw arrangement. Rather, it is sufficient for one press jaw arrangement to be identified or recognized as being different from another press jaw arrangement.
  • the pressing jaw arrangement can be classified based on its model number. In one example, it can thus be recognized that a pressing jaw arrangement for pressing stainless steel fittings with a diameter of 15 mm is present and/or coupled. Resulting sensor data can characterize the identified pressing jaw arrangement.
  • the press machine includes a controller that is set up to control the drive based on the sensor data.
  • the drive is thus controlled accordingly.
  • the press jaw arrangement can be driven differently by the drive, for example, in order ultimately to optimally deform the workpiece.
  • the present invention thus makes it possible to carry out the deformation as a function of the coupled pressing jaw arrangement.
  • an individual pressing force can be applied by means of the drive in order to achieve an optimal and material-friendly deformation of the workpiece.
  • the use of the sensor system allows the pressing jaw arrangement to be automatically identified and corresponding data to be passed on to the drive, so that the user or operator of the pressing machine does not have to make any entries himself and is accordingly not additionally burdened. This can reduce the risk of incorrect operation.
  • the press machine preferably comprises a storage medium with a database.
  • the database preferably includes specific control parameters for controlling the press machine for a plurality of press jaw arrangements. Furthermore, the controller can then control the drive according to the at least one specific control parameter. According to the identification of the pressing jaw arrangement, corresponding control parameters can thus be loaded from the memory or from the database and used to operate the drive. For example, control parameters for a press jaw arrangement for stainless steel fittings and different control parameters for a press jaw arrangement for copper fittings can be stored in the database. Depending on whether a press jaw arrangement for stainless steel or copper fittings was identified using the sensor system, the corresponding control parameters can be loaded from the database and used by the controller to control the press machine and ultimately the drive. Corresponding control parameters can be stored in the database for different characteristics of the press jaw arrangements (e.g.
  • the database can be accessed via a (wired or wireless) interface, for example to update the content of the database.
  • control parameters preferably include pressing parameters, which preferably include a maximum pressing force, a pressing speed, a pressing path and/or a pressing duration.
  • pressing parameters preferably include a maximum pressing force, a pressing speed, a pressing path and/or a pressing duration.
  • specific press forces, press speeds, press distances and/or press durations can be specified, for example, which the press machine should use, for example, for pressing or deforming the fitting with the pipe section.
  • These parameters can be specified, for example, in the form of a pressing curve, which specifies a progression of pressing force, pressing distance and/or pressing speed over time.
  • the person skilled in the art understands how to store corresponding control parameters in the database depending on the intended use of the press machine.
  • control parameters can in particular include drive parameters, which in particular include a drive speed, drive power and/or an oil pressure.
  • drive parameters can thus be stored in the database, which can be loaded based on the identified press jaw arrangement in order to ultimately deform the workpiece.
  • press parameters or drive parameters can include motor and/or transmission parameters which can regulate the power transmission from the drive to the press jaws.
  • the sensor system can include at least one optical sensor, a contact-based sensor, an inductive sensor and/or capacitive sensor, it being possible for the sensor system to be set up in particular to read an RFID and/or NFC transponder.
  • the sensor system can alternatively or additionally be set up to read a barcode or a QR code.
  • the sensor system can include a Bluetooth module, which is set up to read a corresponding Bluetooth module.
  • a contact-based sensor may include an electrical contact that contacts a corresponding electrical contact of the press jaw/jaw assembly to identify the press jaw/jaw assembly.
  • the use of an inductive and/or capacitive sensor enables reliable identification, since inductive and/or capacitive sensors are less susceptible to contamination than, for example, optical or contact-based sensors.
  • the RFID and/or NFC transponder or the corresponding Bluetooth module can have an identifier that is read during identification. This identifier is characteristic of the type of press jaw arrangement or of an individual press jaw arrangement and can include a serial number and/or a type number, for example.
  • the control parameters can then be determined based on the identifier read out and the database.
  • the RFID and/or NFC transponder or the corresponding Bluetooth module can include the control parameters themselves. These can then be read out during identification and forwarded to the controller.
  • the pressing jaw arrangement carries the required control parameters in the RFID and/or NFC transponder assigned to it or in a corresponding Bluetooth module.
  • RFID radio-frequency-identification
  • the pressing jaw arrangement can be identified by means of electromagnetic waves.
  • the pressing jaw arrangement can be identified automatically and without contact using RFID technology.
  • An RFID reader (sensor) arranged on the press machine can read out the identifier and/or control parameters, which can be provided by a corresponding RFID transponder of the press jaw arrangement.
  • An RFID transponder can be read without additional provision of energy.
  • the pressing jaw arrangement can thus be designed to be passive and does not require any additional interface or source for the provision of electrical energy.
  • NFC technology or near field communication is an international transmission standard based on RFID technology for the contactless exchange of data via electromagnetic induction or capacitive transmission.
  • the communication between the corresponding NFC participants can be active-passive or active-active.
  • the active part ie the part that is supplied with electrical energy, is preferably provided in the pressing machine, while the passive part is provided on the pressing jaw arrangement.
  • the pressing jaw arrangement can thus be designed to be passive and does not require any additional interface or source for the provision of electrical energy.
  • Bluetooth communication enables data to be transmitted between devices over a short distance using radio technology.
  • the communication takes place using a correspondingly developed industry standard, for example according to the IEEE 802.15.1 standard.
  • a first reading range of the sensor system can be limited and be at most 0.3 m, preferably at most 0.2 m and most preferably at most 0.1 m.
  • the first reading range of the sensor system can be selected in such a way that only one coupled pressing jaw arrangement can be identified.
  • the limitation of the first reading range prevents accidental identification of an incorrect pressing jaw arrangement located in the vicinity of the pressing machine.
  • the press machine is provided in a carrying case or on a workbench along with a plurality of press jaw assemblies. When the press machine is started up, only the coupled press jaw arrangement or the press jaw arrangement to be coupled should be identified. This can be ensured by limiting the first read range.
  • the sensor system can be set up to identify a workpiece, the storage medium comprising a database which comprises at least one specific control parameter for a plurality of workpieces, the controller being set up to control the drive according to the at least one specific control parameter.
  • the drive is controlled accordingly.
  • the press jaws can be driven differently by the drive, for example, in order to ultimately optimally deform the workpiece.
  • Both the type of workpiece and the type of press jaw arrangement can be taken into account when selecting the control parameters. In particular, it can be checked whether the identified pressing jaw arrangement corresponds to the workpiece to be pressed. If this is not the case, an alarm can be raised issued in order to avoid faulty pressing and/or damage to the pressing machine.
  • the control parameters can be adapted to the identified workpiece, thus avoiding excessive pressing.
  • a press jaw arrangement for pressing stainless steel fittings is coupled to the press machine and the workpiece to be pressed is a copper fitting, too high a press force would be applied if only the type of press jaw arrangement were taken into account. If, on the other hand, the type of workpiece is also recognized, the pressing force can be reduced accordingly and the workpiece can be pressed with the supposedly unsuitable pressing jaw arrangement—but with reduced pressing force.
  • the present invention thus allows the deformation to be carried out depending on the object to be deformed and the press jaw arrangement used.
  • an individual pressing force can be applied by means of the drive in order to achieve optimal deformation that is gentle on the material without damaging the workpiece or the pressing machine.
  • a second reading range for identifying the workpiece can preferably be in the range of 0 meters to 5 meters, more preferably in the range of 0.01 meters to 2 meters, more preferably in the range of 0.02 meters to 1 meter and more preferably in the range of 0 .05 meters to 0.5 meters.
  • the sensor system can therefore only identify workpieces that are within the second reading range. This makes it possible for only those workpieces to be identified which are actually to be deformed. This at least partially prevents accidental identification of workpieces that are far away and not to be deformed.
  • the first and the second reading range can be different.
  • the sensor system is preferably set up to recognize characteristic features of the workpiece, in particular characteristic geometric features of the pressing jaw arrangement and/or a workpiece. For example, a shape and/or size of at least part of the pressing jaw arrangement and/or the workpiece can be recognized by means of the sensor system. Based on these characteristic features, the pressing jaw arrangement and/or the workpiece can be identified, at least according to its type, and then the drive can be controlled accordingly in order to optimally deform the workpiece.
  • the sensor system includes a sensor such as a camera, an optical scanner, an RFID reader, an NFC reader and/or a Bluetooth module for identifying the workpiece.
  • a sensor such as a camera, an optical scanner, an RFID reader, an NFC reader and/or a Bluetooth module for identifying the workpiece.
  • the same sensor or different sensors or sensor types can be used to identify the workpiece and the press jaw arrangement.
  • the camera may be an optical camera, which may have sufficient resolution and quality to at least identify the workpiece by type. For example, a fitting with a diameter of 15 mm can be identified using the camera. Color values can also be used to draw conclusions about the material of the workpiece.
  • the optical scanner, the RFID reader, the NFC reader and/or the Bluetooth module can be used to recognize data or identifiers that can be provided, for example, by the workpiece itself or the press jaw arrangement, and allow the workpiece to be identified .
  • the optical scanner can recognize a barcode or QR code placed on the workpiece.
  • an illuminant can also be provided on the pressing machine, which can at least partially illuminate or illuminate the area that can be detected by the camera or by the scanner.
  • the sensor system is preferably set up to recognize a barcode on the workpiece, a QR code on the workpiece, an identifier in an RFID transponder on the workpiece, an identifier in an NFC transponder on the workpiece, and/or an identifier in a Bluetooth module on the workpiece.
  • a QR code on the workpiece
  • an identifier in an RFID transponder on the workpiece an identifier in an NFC transponder on the workpiece
  • an identifier in a Bluetooth module on the workpiece.
  • the workpiece can be equipped with appropriate codes or transponders or modules in order to provide appropriate data for identifying the workpiece—at least according to its type—to the pressing machine.
  • the sensor of the sensor system is arranged directly on the pressing jaw holder.
  • the sensor is at least partially covered by an element of the press machine in a first configuration of the press machine and is uncovered by the element in a second configuration of the press machine.
  • a sensor of the sensor system can be covered by a part of the housing of the pressing machine, whereby the sensor can be protected from dirt or other environmental influences.
  • the pressing jaws are moved apart or opened, which can correspond to the second configuration, the sensor is (at least partially) released or uncovered.
  • the pressing jaw arrangement and/or the workpiece can now be identified by means of the sensor system.
  • the press jaws are moved towards one another or brought into the first configuration, as a result of which the sensor can again be at least partially covered by a part of the housing. This also ensures that the identification by means of the sensor system only takes place when the workpiece is to be deformed. This prevents accidental incorrect identification of a workpiece that is nearby (eg lying on a workbench).
  • the pressing jaws of the pressing jaw arrangement and particularly preferably the entire pressing jaw arrangement are preferably free of the sensor system.
  • no elements of the sensor system are arranged on the pressing jaws or the pressing jaw arrangement.
  • the sensor system can thus be arranged, for example, exclusively on or in a manual part of the press machine. This enables easy interchangeability of the pressing jaws or the pressing jaw arrangement.
  • the sensor system is at least partially arranged on the pressing jaws or the pressing jaw arrangement, in particular in a depression in the pressing jaws (for example to protect the sensor system).
  • the sensor system can be connected to the motor of the press machine via a coupling interface.
  • the sensor system is preferably arranged at least partially in a housing of the pressing machine. If the sensor system is set up to read an RFID and/or NFC transponder, or if it includes a Bluetooth module, the sensor system can be arranged completely within the housing of the pressing machine.
  • the housing of the pressing machine is at least partially permeable to the readout data.
  • the housing material can include glass, ceramics, plastics or composites that are at least partially transparent to electromagnetic radiation.
  • the housing can also have suitable recesses to enable reading. With this arrangement, the sensor system can be protected from dirt or other environmental influences, since it is at least partially shielded by the housing of the pressing machine.
  • the press jaw arrangement can at least partially cover the sensor of the sensor system when the press jaw arrangement is coupled to the press jaw receptacle, wherein the sensor is at least partially uncovered when no press jaw arrangement is coupled to the press jaw receptacle.
  • the sensor system or the sensor can thus be protected from contamination or other environmental influences.
  • the reading accuracy of the sensor system can be increased since the sensor system or the sensor of the sensor system is set up directly adjacent to the coupled pressing jaw receptacle and is not covered by other parts, such as a housing part. A very small maximum first reading range can thus be realized and the risk of incorrect identification of adjacent, uncoupled press jaw receptacles can be reduced.
  • the press machine preferably includes a log memory set up for storing the sensor data and control data.
  • the coupling process and/or the deformation process can be made traceable. All or some data on the coupling process and/or the deformation process can be stored in the log memory, for example to enable quality monitoring of individual deformations.
  • the log memory can be accessed via an interface (wireless or wired) to read out the corresponding data.
  • the present invention further relates to a method for operating a press machine according to the above statements, for plastically deforming a tubular workpiece, such as a fitting.
  • the method comprises the following steps: coupling a press jaw arrangement to the press jaw receptacle of the press machine; identifying the press jaw assembly by means of the sensor system and preferably identifying the workpiece; gripping the workpiece with the coupled die assembly; controlling the press machine in accordance with the identified die assembly, and preferably in accordance with the identified workpiece, to apply a force by means of the die assembly toward the surface of the gripped workpiece to plastically deform the workpiece.
  • the pressing jaw arrangement can be identified after the coupling or before the coupling, in particular during the coupling.
  • the drive of the press machine can be controlled accordingly. This can be dependent from the identification step, a reduced or increased pressing force, pressing duration and/or pressing speed can be set, depending on which pressing jaw arrangement or which type of workpiece has been identified.
  • the method steps of identifying, gripping and/or controlling can be implemented in a computer program, with the computer program being able to cause a corresponding press machine system to carry out the respective steps.
  • the present invention also relates to a press jaw arrangement for coupling to a press machine for plastically deforming a tubular workpiece, in particular a fitting.
  • this pressing jaw arrangement can be coupled to a pressing machine according to the above statements.
  • the pressing jaw arrangement includes a marking that is designed to be identified by the sensor system of the pressing machine, wherein the marking preferably includes an RFID transponder or an NFC transponder.
  • the marking is preferably arranged in a depression in the pressing jaw arrangement in order to protect it from dirt, damage and other environmental influences.
  • the recess can be sealed.
  • the recess including the marking can be sealed with a plastic such as an epoxy resin, glass or ceramic.
  • the sealing material can completely enclose and/or cover the marking.
  • the present invention also relates to a tubular workpiece, in particular a fitting, which is set up for plastic deformation by a pressing machine.
  • the tubular workpiece can be deformed, for example, by a press machine according to the above statements.
  • the workpiece, in particular the fitting can be designed in accordance with the above statements and can be made of copper, plastic, composite and/or (stainless) steel.
  • the tubular workpiece comprises a means which is set up to provide an identifier for identifying the workpiece.
  • the means can be designed as a barcode or QR code, for example.
  • the means can include a transponder, in particular an RFID or NFC transponder, which is set up to provide the identifier.
  • FIG 1 1 shows a press machine system 1 comprising a press machine 10 and a press jaw assembly 20 according to an embodiment of the present invention.
  • the press machine 10 includes a hand-held part 11 which can be guided by hand by an operator or user.
  • the pressing jaw arrangement 20 can be detachably coupled to the handle 11 .
  • the press jaw arrangement 20 comprises two press jaws 21a, 21b by means of which a workpiece (fitting) can be gripped and plastically deformed.
  • a drive 14, such as an electric motor with a gear is provided in the handle part 11, which can drive the pressing jaw arrangement 20 via a coupling interface and ultimately move the pressing jaws 21a, 21b in order to deform the fitting.
  • an operator can actuate a corresponding actuating lever 13: by actuating the lever 13 accordingly, the press jaws 21a, 21b are first moved apart to grip a fitting and then pressed together to deform the fitting.
  • the pressing jaw arrangement 20 is coupled to the pressing machine 10 via the pressing jaw receptacle 12, which can comprise a bolt, for example.
  • a sensor system 40 (cf. 4 ) provided.
  • the sensor system includes an inductive and/or capacitive sensor and is set up in particular for reading an RFID and/or NFC transponder 22 .
  • the sensor system 40 By actuating the lever 13 to move the press jaws 21a, 21b apart in order to grip a fitting, the sensor system 40 is activated.
  • the sensor system 40 can be activated when a press jaw arrangement 20 is coupled to the press jaw receptacle 12 .
  • the sensor system 40 can, for example, recognize and read an identifier from a corresponding pressing jaw arrangement 20 .
  • the identifier can be stored in a transponder 22 .
  • the transponder can also have stored control data that can be read out by the sensor system 40 .
  • the pressing jaw arrangement 20 can be identified by means of the sensor system 40 on the basis of this identifier.
  • the sensor system 40 can identify a workpiece type.
  • the drive 14 is driven in order to exert a force on the fitting arranged between the pressing jaws 21a, 21b.
  • the drive 14 is activated depending on which pressing jaw arrangement 20 or which type of workpiece was identified.
  • FIG. 2 1 is a press jaw assembly 20 having press jaws 21a, 21b according to an embodiment of the present invention.
  • the pressing jaw arrangement can be detachably coupled to a pressing jaw receptacle 12 of a pressing machine 10 .
  • a transponder 22 (for example an RFID or NFC transponder) is arranged in a depression 24 .
  • the sensor system 40 and in particular a sensor of the sensor system is at least partially covered.
  • FIG 3 1 shows a possible configuration of a tubular workpiece according to an embodiment of the present invention.
  • the workpiece shown is in the form of a fitting 30 .
  • the fitting 30 include a means 32 for providing an identifier for identifying the respective fitting 30, such as a press machine 10 according to figure 1 .
  • That in the figure 3 Fitting 30 shown includes an RFID transponder 32, on which at least one identifier is stored.
  • the identifier characterizes the fitting 30 at least according to its type. by means of one corresponding RFID reader on the press machine, such as by means of the terms figure 1 sensor described, the identifier stored on the RFID transponder 32 of the fitting 30 can be read in order to identify the fitting 30 .
  • figure 4 12 is a schematic representation of the press machine system 1.
  • the system includes a press machine 10 with a press jaw assembly 20 detachably coupled thereto.
  • the press machine 10 also includes a hand part 11 for gripping the press machine 10 and a lever 13 for actuating the press machine 10.
  • the press machine 10 includes a sensor system 40, which includes two sensors 42, 44 in the present illustration.
  • the sensor 42 is used to identify the pressing jaw arrangement 20 by means of the transponder 22 and has a maximum first reading range D20.
  • the first reading range D20 of the sensor system is selected in such a way that only one coupled press jaw arrangement 20 can be identified.
  • the limitation of the first read range D20 prevents an incorrect press jaw arrangement located in the vicinity of the press machine 10 from being accidentally identified.
  • the sensor 44 is used to identify the workpiece 30 using the transponder 32.
  • the sensor 44 has a second reading range D30.
  • the second reading range D30 is selected in such a way that the sensor system 40 can only identify workpieces 30 that are in the immediate vicinity of the pressing jaws 21a, 21b and/or are gripped by the pressing jaws 21a, 21b.
  • the sensor system can include a sensor that is used both to identify the pressing jaw arrangement 20 and to identify the workpiece 30 .
  • the press machine 10 includes a storage medium 18 with a database.
  • the database preferably includes specific control parameters for controlling the press machine 10 for a plurality of press jaw arrangements 20 and/or workpieces 30.
  • a controller 16 of the press machine 10 can control the drive 14 according to the at least one specific control parameter.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Automatic Assembly (AREA)

Claims (13)

  1. Machine de pressage (10) pour la déformation plastique d'une pièce tubulaire (30), en particulier d'un raccord, la machine de pressage (10) comprenant :
    un logement de mâchoires de pressage (12) pour coupler un agencement de mâchoires de pressage (20) avec la machine de pressage (10) ;
    un moyen d'entraînement (14) agencé pour entraîner un agencement de mâchoires de pressage couplé (20) afin d'exercer une force sur la pièce (30) ;
    un système de capteur (40) agencé pour identifier un agencement de mâchoires de pressage (20) et pour fournir des données de capteur correspondantes,
    une commande (16) qui est agencée pour commander le moyen d'entraînement (14) sur la base des données de capteur,
    dans laquelle le système de capteur inclut au moins un capteur (42, 44),
    caractérisée en ce que le au moins un capteur du système de capteur (40) est disposé directement sur le logement de mâchoires de pressage (12), le capteur (42, 44) étant au moins en partie recouvert par un élément de la machine de pressage (10) dans une première configuration de la machine de pressage (10) et l'élément dégageant le capteur (42, 44) dans une deuxième configuration de la machine de pressage (10) .
  2. Machine de pressage (10) selon la revendication 1, comprenant un moyen de mémoire (18) avec une banque de données qui inclut au moins un paramètre de commande spécifique pour une pluralité d'agencements de mâchoires de pressage (20), la commande (16) étant agencée pour commander le moyen d'entraînement (14) conformément à l'au moins un paramètre de commande spécifique.
  3. Machine de pressage (10) selon la revendication 2, dans laquelle les paramètres de commande incluent des paramètres de pressage qui incluent en particulier une force de pressage maximale, une vitesse de pressage, une course de pressage et/ou une durée de pressage, et/ou dans laquelle les paramètres de commande incluent des paramètres d'entraînement qui incluent en particulier une vitesse de rotation d'entraînement prédéterminée, une puissance d'entraînement et/ou une pression d'huile prédéterminée.
  4. Machine de pressage (10) selon une des revendications précédentes, dans laquelle le système de capteur (40) inclut au moins un capteur optique, un capteur par contact, un capteur inductif et/ou un capteur capacitif (42, 44), et dans laquelle le système de capteur (40) est agencé en particulier pour lire un transpondeur RFID et/ou NFC (22, 32), et/ou dans laquelle le système de capteur (40) est agencé en particulier pour lire un code-barres ou un code QR.
  5. Machine de pressage (10) selon une des revendications précédentes, dans laquelle le système de capteur (40) présente une première portée de lecture maximale (D20) d'au plus 0,3 m, préférentiellement d'au plus 0,2 m et, le plus préférentiellement, d'au plus 0,1 m, et/ou dans laquelle la première portée de lecture (D20) du système de capteur est choisie de façon qu'un seul agencement de mâchoires de pressage couplé (20) puisse être identifié.
  6. Machine de pressage (10) selon une des revendications précédentes, dans laquelle le système de capteur (40) est agencé pour identifier une pièce (30), dans laquelle une deuxième portée de lecture (D30) pour identifier la pièce (30) est de préférence dans la plage de 0 m à 5 m, plus préférentiellement dans la plage de 0,01 m à 2 m, plus préférentiellement dans la plage de 0,02 m à 1 m et plus préférentiellement dans la plage de 0,05 m à 0,5 m, et dans laquelle le moyen de mémoire (18) inclut une banque de données, qui inclut au moins un paramètre de commande spécifique pour une pluralité de pièces (30), la commande (16) étant agencée pour commander le moyen d'entraînement (14) conformément à l'au moins un paramètre de commande spécifique.
  7. Machine de pressage selon une des revendications précédentes, dans laquelle le système de capteur (40) est agencé pour détecter des attributs caractéristiques de l'agencement de mâchoires de pressage (20) et/ou d'une pièce (30), en particulier des attributs géométriques caractéristiques de l'agencement de mâchoires de pressage (20) et/ou de la pièce (30).
  8. Machine de pressage (10) selon une des revendications précédentes, dans laquelle le système de capteur (40) est agencé pour reconnaître un code-barres sur la pièce (30), un code QR sur la pièce (30), un signe distinctif dans un transpondeur RFID sur la pièce (30), un signe distinctif dans un transpondeur NFC (32) sur la pièce (30) et/ou un signe distinctif dans un module Bluetooth sur la pièce (30).
  9. Machine de pressage (10) selon une des revendications précédentes, dans laquelle les mâchoires de pressage (21a,b) de l'agencement de mâchoires de pressage (20), et de préférence l'agencement de mâchoires de pressage (20), est exempt de système de capteur (40).
  10. Machine de pressage (10) selon une des revendications précédentes, dans laquelle l'agencement de mâchoires de pressage (20) recouvre au moins en partie le capteur (42, 44) du système de capteur (40) lorsque l'agencement de mâchoires de pressage (20) est couplé avec le logement de mâchoires de pressage (12), et dans laquelle le capteur (42, 44) est au moins en partie non recouvert lorsque aucun agencement de mâchoires de pressage (20) n'est couplé avec le logement de mâchoires de pressage (12).
  11. Machine de pressage (10) selon une des revendications précédentes, comprenant en outre une mémoire de protocole agencée pour mémoriser des données de capteur et des données de commande.
  12. Procédé de mise en œuvre d'une machine de pressage (10) selon une des revendications 1 à 11 pour la déformation plastique d'une pièce tubulaire (30), le procédé comprenant :
    le couplage d'un agencement de mâchoires de pressage (20) avec le logement de mâchoires de pressage (12) de la machine de pressage (10) ;
    l'identification de l'agencement de mâchoires de pressage (20) au moyen du système de capteur (40) et, de préférence, l'identification de la pièce (30) ;
    la préhension de la pièce (30) avec l'agencement de mâchoires de pressage couplé (20) ;
    la commande de la machine de pressage (10) conformément à l'agencement de mâchoires de pressage identifié (20) et, de préférence, conformément à la pièce identifiée (30) pour exercer une force au moyen de l'agencement de mâchoires de pressage (20) sur la surface extérieure de la pièce prise (30) afin de déformer plastiquement la pièce (30).
  13. Agencement de mâchoires de pressage (20) à coupler avec une machine de pressage (10) selon une des revendications 1 à 11, comprenant :
    un marquage qui est agencé pour être identifié par l'intermédiaire du système de capteur (40) de la machine de pressage (10), dans lequel
    le marquage inclut de préférence un transpondeur RFID (22) ou un transpondeur NFC qui est disposé de préférence dans un renfoncement (24) de l'agencement de mâchoires de pressage (20), dans lequel l'agencement de mâchoires de pressage (20) est en outre agencé pour recouvrir au moins en partie le capteur du système de capteur lorsque l'agencement de mâchoires de pressage (20) est couplé avec le logement de mâchoires de pressage (12) de la machine de pressage (10).
EP18201502.4A 2018-10-19 2018-10-19 Machine à presser pourvu de système de détection destiné à la détection automatisée d'un agencement de mâchoire de compression Active EP3639942B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP18201502.4A EP3639942B1 (fr) 2018-10-19 2018-10-19 Machine à presser pourvu de système de détection destiné à la détection automatisée d'un agencement de mâchoire de compression
US16/574,289 US11611186B2 (en) 2018-10-19 2019-09-18 Pressing tool with sensor system for automated recognition of a pressing jaw assembly
CN201910992321.7A CN111069444B (zh) 2018-10-19 2019-10-18 具有用于自动识别压爪机构的传感器系统的压机

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EP18201502.4A EP3639942B1 (fr) 2018-10-19 2018-10-19 Machine à presser pourvu de système de détection destiné à la détection automatisée d'un agencement de mâchoire de compression

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EP3639941A1 (fr) * 2018-10-19 2020-04-22 Von Arx AG Machine à presser pourvu de système capteur destiné à l'identification de pièces à usiner
EP3639942B1 (fr) * 2018-10-19 2022-11-30 Von Arx AG Machine à presser pourvu de système de détection destiné à la détection automatisée d'un agencement de mâchoire de compression
DE102020115060A1 (de) * 2020-06-05 2021-12-09 Joiner's Bench Gmbh Leitungselement, Pressgerät, Presswerkzeug, Erfassungseinrichtung für ein Pressgerät und Verfahren zur Herstellung einer Verbindung
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DE112022003492T5 (de) * 2021-08-11 2024-05-16 Milwaukee Electric Tool Corporation Systeme und verfahren zum bestimmen von crimpanwendungen und melden von elektrowerkzeugnutzung
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US11611186B2 (en) 2023-03-21
EP3639942A1 (fr) 2020-04-22
CN111069444B (zh) 2022-04-29
CN111069444A (zh) 2020-04-28
US20200127429A1 (en) 2020-04-23

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