EP3656504A1 - Press tool, press tool set, press tool network and method for crimping a workpiece - Google Patents

Abstract

The invention relates to a press tool network (39) which has a press tool (2), an electronic control unit (31) (in particular a smartphone or a tablet) and a data memory (37) (in particular a cloud memory (38)). According to the invention, a die (3, 4) of the pressing tool (2) has an identification (18, 19) which can be detected by means of a detection device (21) of the pressing tool. The control unit (31) is provided with specific data (48) from the data memory (37) for the detected identification (18, 19), which is a target pressure force profile (49), a target pressure path profile (50) and / or information on a workpiece for which the dies (3, 4) are intended can act. In this way, the process reliability for the use of the pressing tool (2) can be increased. The invention further relates to a pressing tool (2) with a detection device (21) and a method for pressing a workpiece.

Description

The invention relates to a press tool, which can be a press tool operated with external energy, in particular pneumatically, hydraulically or electrically, which can be held and guided by a user by hand or can be designed as a stationary press machine. The pressing tool is preferably a hand pressing tool which is operated manually by the application of forces by a user to the hand lever of the hand pressing tool.

1. a) Möglich ist, dass das Presswerkzeug eine Crimpzange oder eine Crimpmaschine ist, welche insbesondere einer Herstellung einer dauerhaften mechanischen Verbindung und elektrischen Kontaktierung. Dies erfolgt vorzugsweise durch Vercrimpen eines Steckers mit einem Kabel oder einem elektrischen Leiter beliebiger Bauart. Je nach zum Einsatz kommenden Profil der Gesenke können unterschiedliche Crimpvorgänge mit der Crimpzange oder der Crimpmaschine ausgeführt werden. Beispielsweise kann es sich um einen geschlossenen Crimp handeln, bei dem der Leiter in eine geschlossene Crimpzone eines Steckers oder in eine geschlossene Hülse eingeführt wird und durch plastische Verformung der Crimpzone oder der Hülse vercrimpt wird. Möglich ist aber auch, dass ein offener Crimp erzeugt wird, bei dem der Stecker eine offene Crimpzone aufweist, in die der Leiter von oben eingelegt werden kann. Um lediglich einige, die Erfindung nicht beschränkende Beispiele zu nennen, können mit der hier einschlägigen Crimpzange oder Crimpmaschine Werkstücke wie
   • Kabelschuhe nach DIN 4623,
   • Aluminiumverbinder nach DIN 46329
   • Aluminium-Presskabelschuhe nach DIN 48201
   • Quetschkabelschuhe nach DIN 46234,
   • Stiftkabelschuhe nach DIN 46230 oder
   • Verbinder, Stecker oder Kabelschuhe für eine Verbindung mit einem Kabel oder Leiter, wie diese in dem Produktkatalog der WEZAG GmbH Werkzeugfabrik "Werkzeuge für die professionelle Anwendung" mit der Veröffentlichungs-Nr. 10/11 beschrieben sind,
   vercrimpt werden. Bei dem hergestellten Crimp kann es sich beispielsweise für einen geschlossenen Crimp um einen Sechskant- oder Hexagonalcrimp, einen Vierkantcrimp, einen B-Crimp, einen Trapezcrimp, einen modifizierten Trapezcrimp, einen Ovalcrimp, einen Dorncrimp oder einen Zweidorncrimp handeln. Ein offener Crimp kann bspw. als V-Crimp oder B-Crimp, als Rollcrimp oder als Doppelrollcrimp ausgebildet sein.
   Zusätzlich zur Herstellung der elektrischen Verbindung zwischen Kabel oder Leiter und Stecker kann eine mechanische Verbindung mittels eines sogenannten Isolationscrimps hergestellt werden. Hierbei kann ein geschlossener Isolationscrimp oder ein offener Isolationscrimp (insbesondere V-Crimp oder B-Crimp, O-Crimp oder OV-Crimp) Einsatz finden. Hinsichtlich weiterer Informationen
   • zur Ausgestaltung einer Crimpzange oder Crimpmaschine,
   • zu möglichen Einsatzbereichen der Crimpzange oder Crimpmaschinen und/oder
   • zu unterschiedlichen möglichen Typen von Crimpverbindungen, welche mittels der Crimpzange oder Crimpmaschine hergestellt werden können,
   wird auf das Werk
   • " Crimptechnik, Herstellung prozesssicherer Verbindungen von elektrischen Leitern und Steckern" der WEZAG GmbH Werkzeugfabrik, Die Bibliothek der Technik 342, Verlag Moderne Industrie, ISBN 978-3-68236-027-7
     verwiesen. Crimpzangen in unterschiedlichen Bauformen sind beispielsweise aus den Druckschriften DE 37 08 727 C2 , DE 197 13 580 C2 , DE 197 53 436 C2 , DE 198 02 287 C1 , DE 198 07 737 C2 , EP 3 208 044 A1 und EP 2 305 428 A1 bekannt.
2. b) Möglich ist auch, dass das Presswerkzeug eine Rohrpresszange ist, die der Herstellung einer mechanischen fluiddichten Verbindung in der Fluidtechnik dient, beispielsweise zur Verbindung von Rohren miteinander oder mit fluidischen Anschlusssteckern. Hierbei erfolgt mittels der Rohrpresszange eine plastische Verformung der zu verbindenden Rohre oder eines sogenannten, die mechanische Verbindung und die fluiddichte Abdichtung gewährleistenden Fittings. Beispielhafte Ausführungsformen einer Rohrpresszange können den Druckschriften DE 197 09 639 A1 , DE 198 34 859 C2 , DE 199 24 086 C2 , DE 199 24 087 C2 , DE 199 63 097 C1 , DE 103 46 241 B3 , EP 2 995 424 A1 entnommen werden.

There are the following variants for the configuration of the pressing tool:

1. a) It is possible that the pressing tool is a crimping tool or a crimping machine, which in particular is a permanent mechanical connection and electrical contact. This is preferably done by crimping a plug with a cable or an electrical conductor of any type. Depending on the profile of the dies used, different crimping processes can be carried out with the crimping tool or the crimping machine. For example, it can be a closed crimp, in which the conductor is inserted into a closed crimp zone of a plug or into a closed sleeve and is crimped by plastic deformation of the crimp zone or the sleeve. However, it is also possible for an open crimp to be produced in which the plug has an open crimp zone in which the conductor can be inserted from above. To name just a few examples, which do not limit the invention, workpieces such as can be used with the relevant crimping pliers or crimping machine
   • Cable lugs according to DIN 4623,
   • Aluminum connector according to DIN 46329
   • Aluminum compression cable lugs according to DIN 48201
   • Crimp cable lugs according to DIN 46234,
   • Pin cable lugs according to DIN 46230 or
   • Connectors, plugs or cable lugs for a connection with a cable or conductor, such as those in the product catalog of WEZAG GmbH tool factory "Tools for professional use" with the publication no. 10/11 are described
   be crimped. The crimp produced can be, for example, a hexagonal or hexagonal crimp, a square crimp, a B crimp, a trapezoidal crimp, a modified trapezoidal crimp, an oval crimp, a mandrel crimp or a two-mandrel crimp for a closed crimp. An open crimp can be designed, for example, as a V-crimp or B-crimp, as a roll crimp or as a double roll crimp.
   In addition to establishing the electrical connection between the cable or conductor and plug, a mechanical connection can be established using a so-called insulation crimp. A closed insulation crimp or an open insulation crimp (in particular V-crimp or B-crimp, O-crimp or OV-crimp) can be used here. For more information
   • to design a crimping tool or crimping machine,
   • on possible areas of application of the crimping tool or crimping machines and / or
   • to different possible types of crimp connections, which can be produced using the crimping tool or crimping machine,
   is going to work
   • " Crimp technology, production of reliable connections of electrical conductors and plugs "by WEZAG GmbH Werkzeugfabrik, Die Bibliothek der Technik 342, Verlag Moderne Industrie, ISBN 978-3-68236-027-7
     referred. Crimping pliers in different designs are, for example, from the publications DE 37 08 727 C2 , DE 197 13 580 C2 , DE 197 53 436 C2 , DE 198 02 287 C1 , DE 198 07 737 C2 , EP 3 208 044 A1 and EP 2 305 428 A1 known.
2. b) It is also possible for the pressing tool to be a pipe crimping tool which is used to produce a mechanical fluid-tight connection in fluid technology, for example for connecting pipes to one another or with fluidic connecting plugs. Here, the pipe crimping tool is used to plastically deform the pipes to be connected or a so-called fitting, which ensures the mechanical connection and the fluid-tight seal. Exemplary embodiments of a pipe crimping tool can be found in the publications DE 197 09 639 A1 , DE 198 34 859 C2 , DE 199 24 086 C2 , DE 199 24 087 C2 , DE 199 63 097 C1 , DE 103 46 241 B3 , EP 2 995 424 A1 be removed.

A workpiece is pressed with the pressing tool. This workpiece can be an assembly. For the configuration of the pressing tool as a crimping tool or crimping machine, the workpiece can be, for example, a structural unit formed with a plug and an electrical conductor, possibly with an additional seal. On the other hand, the configuration of the press tool as a pipe press tool on the workpiece can be the fitting, if appropriate with at least one pipe or a connecting element arranged therein and any seal.

OBJECT OF THE INVENTION

• einer Vereinfachung des Prozesses,
• der Prozesssicherheit und/oder
• einer Prozessdokumentation

zu verbessern.The invention is based on the object of a pressing tool, a pressing tool set, a pressing tool network and a method for pressing a workpiece

• a simplification of the process,
• process security and / or
• process documentation

to improve.

SOLUTION

The object of the invention is achieved according to the invention with the features of the independent claims. Further preferred configurations according to the invention can be found in the dependent patent claims.

DESCRIPTION OF THE INVENTION

To achieve the object on which the invention is based, the pressing tool, which is intended for pressing a workpiece, has (at least) one die holder, in which a replaceable die can be received. The die can, for example, be screwed or clipped onto the die holder, cf. also the connection of a die with a die holder according to the patent DE 198 02 287 C1 .

In the event that the pressing tool is a pipe crimping tool or crimping tool, the die holder can be formed by the pliers jaw. If, on the other hand, the pressing tool is a machine operated with external energy, the die holder can be formed by a stamp or anvil.

According to the invention, the pressing tool has a (preferably electronic) detection device. The detection device is set up to detect an identification of the die.

According to the prior art, while the die is being fed to the die holder of the press tool by the user or by an automatic feed device, care must be taken to ensure that the die that is correct for the respective workpiece for the pressing of the workpiece is arranged in the die holder of the press tool. Any documentation and evaluation of, for example, pressing forces of the pressing tool when pressing the workpiece must trust that the correct die is arranged in the die holder.

On the other hand, the pressing tool according to the invention is able to acquire information in the form of a marking relating to the die arranged in the die holder. This leads to an increase in process reliability, since it can be recognized whether the right die, the right type of die or also a type of die from a group of permitted types of dies is arranged in the die holder. The die identified on the basis of the marking can also be documented in a process documentation. A process control during the pressing of the workpiece can also be carried out on the basis of the detected identification of the die and / or specific evaluation parameters such as, for example, target press force profiles can be used for the die.

• der Nutzung der Elektronik-Baueinheit für weitere Funktionen,
• der konstruktiven, elektrischen und/oder elektronischen Ausgestaltung der Elektronik-Baueinheit und
• der Verbindung der Elektronik-Baueinheit mit dem mechanischen Zangenteil

zum Gegenstand der vorliegenden europäischen Patentanmeldung gemacht wird.In the event that the pressing tool is a pressing tool that is operated manually via a hand lever, the detection device can in principle be arranged at any point on the pressing tool. For a special proposal of the invention, the detection device and / or an electronic control unit are / are arranged in the region of a pliers head of the pressing tongs. Such a pliers head can be arranged between the jaws of the pliers and the hand levers and can have a fixed housing. It is possible here that the detection device is integrated in a "tech pack" of the pliers head or is integrated in an electronic assembly formed separately from a mechanical pliers part, as is the case with the official file number in the unpublished European patent application EP 18 173 803.0 which is described in terms of

• the use of the electronic assembly for further functions,
• the constructive, electrical and / or electronic design of the electronic unit and
• the connection of the electronic assembly with the mechanical pliers part

is made the subject of this European patent application.

Another embodiment of the invention proposes that the detection device be arranged in the region or adjacent to the die holder. If the pressing tool is designed as pressing tongs, the detection device can be arranged in the area of the pliers head or even in the area of a pliers jaw. To cite just another example, the distance of the detection device from the die receptacle can be less than 10 cm, less than 5 cm, less than 4 cm, less than 3 cm, less than 2 cm or even less than 1.5 cm. The detection device can even extend into the area of the die holder itself.

• Das Presswerkzeug kann in einem Presswerkzeug-Set mit einem Gesenk verwendet werden, welches eine optische Codierung aufweist, welche die Kennzeichnung beinhaltet. Als eine Möglichkeit für eine derartige optische Codierung kann ein Barcode oder eine Ziffernfolge oder ein QR-Code genannt werden. In diesem Fall kann die Erfassungseinrichtung des Presswerkzeugs über eine Leseeinrichtung verfügen, über welche die optische Codierung erfasst werden kann. Diese Leseeinrichtung kann beispielsweise eine Art Kamera oder ein Scanner für die optische Codierung sein.
• Möglich ist auch, dass in dem Presswerkzeug-Set ein Gesenk Einsatz findet, welches eine mechanische Kontaktkontur aufweist, die die Kennzeichnung bereitstellt. In diesem Fall weist die Erfassungseinrichtung eine mechanische Abtasteinrichtung für die mechanische Kontaktkontur auf. Um lediglich ein nicht beschränkendes Beispiel zu nennen, kann die mechanische Abtasteinrichtung einen Abtaststift oder eine Abtastrolle aufweisen, der oder die entlang der mechanischen Kontaktkontur bewegt wird. Das sensierte Signal der Verschiebung des Abtaststifts beinhaltet dann die Kennzeichnung. Möglich ist aber auch, dass eine Reihe oder ein Feld von Abtaststiften gegen eine mechanische Kontaktkontur gedrückt wird, womit die Abtaststifte dann unterschiedlich entsprechend der mechanischen Kontaktkontur ausgelenkt werden und anhand der Auslenkungen der Abtaststifte die mit der Kontaktkontur codierte Kennzeichnung erfasst werden kann.
• Möglich ist des Weiteren, dass das Gesenk eine RFID-Einheit aufweist, über welche die Kennzeichnung bereitgestellt wird. Die RFID-Einheit sendet ein insbesondere hochfrequentes Signal aus, welches die Kennzeichnung beinhaltet. Für den Fall, dass die RFID-Einheit als passive Einheit ausgebildet ist, kann diese ohne eigene Leistungsversorgung ausgebildet sein und infolge einer externen Anregung durch eine Anregungseinheit, welche ebenfalls Bestandteil des Presswerkzeugs sein kann, in an sich bekannter Weise mit elektrischer Leistung versorgt wird, womit dann das Aussenden des die Kennzeichnung aufweisenden Signals ermöglicht ist. Die Erfassungseinrichtung verfügt über eine Empfangseinrichtung, mittels welcher das von der RFID-Einheit ausgesendete Signal empfangen werden kann.
  Als Sonderform für diese Art der Kennzeichnung und/oder Übertragung der Kennzeichnung zwischen Gesenk und Presswerkzeug kann eine Technologie Einsatz finden, die als Nahfeldkommunikation (oder "Near Field Communication", abgekürzt "NFC") bezeichnet wird. Hierbei handelt es sich um einen auf der RFID-Technik basierenden internationalen Übertragungsstandard zum kontaktlosen Austausch von Daten per elektromagnetischer Induktion mittels loser gekoppelter Spulen über kurze Strecken von wenigen Zentimetern, wobei eine Datenübertragungsrate maximal 424 kBit/s betragen kann. Hierbei kann eine verbindungslose Übertragung mittels passiven HF-RFID-Tags nach ISO/IEC 14443 oder ISO/IEC 1563 erfolgen oder eine verbindungsbehaftete Übertragung zwischen gleichwertigen aktiven Transmittern.
  Hinsichtlich weiterer Informationen zu RFID und NFC, die im Rahmen der Erfindung einsetzbar sind, wird auf den Eintrag zu "NFC" sowie "RFID" unter Wikipedia (Datum der Einsichtnahme 11.10.2018) und die hier angegebenen Literaturstellen sowie RFID und NFC betreffende Standardwerke und Veröffentlichungen, insbesondere
  Klaus Finkenzeller: " RFID-Handbuch: Grundlagen und praktische Anwendungen von Transpondern, kontaktlosen Chipkarten und NFC", Carl Hanser Verlag GmbH + Co. KG, 7. Auflage, ISBN: 9783446439436
  verwiesen.
• Möglich ist auch, dass in einem Presswerkzeug-Set ein Gesenk einen Strahlungs- oder Lichtsender aufweist, welcher die Kennzeichnung codiert in einem Strahlungs- oder Lichtsignal versendet. In diesem Fall kann die Erfassungseinrichtung einen Empfänger für ein Strahlungs- oder Lichtsignal aufweisen. Für die Art der Strahlung oder des Lichts, den in dem Gesenk eingesetzten Sender und/oder den in der Erfassungseinrichtung des Presswerkzeugs eingesetzten Empfänger gibt es vielfältige Möglichkeiten. Beispielsweise kann es sich bei dem Sender um einen Infrarotsensor, eine Lichtzelle oder eine Diode handeln. Möglich ist, dass eine Codierung der Kennzeichnung in Form der Frequenz und/oder der Amplitude des ausgesendeten Strahlungs- oder Lichtsignals erfolgt, wobei auch andere, aus der Übertragungs- oder Nachrichtentechnik bekannte Übertragungs- und Codierungsformen genutzt werden können.
• Möglich ist des Weiteren, dass eine Übertragung der Kennzeichnung über eine induktive Kopplung zwischen dem Gesenk und der Erfassungseinrichtung erfolgt. Hierbei erfolgt eine Übertragung der Kennzeichnung über eine elektromagnetische Induktion, wozu beispielsweise eine Signalübertragung zwischen einer Abfrageeinheit und einem zugeordneten Transponder durch Ein- und Ausschalten eines hochfrequenten Magnetfelds erfolgen kann, was einer Amplitudenmodulation entsprechen kann. In dem Transponder wird hierdurch eine elektrische Spannung in der Spule indiziert, die dann über eine Diode gleichgerichtet werden kann. Andere Ausgestaltungsformen sind aber durchaus auch möglich.

There are various possibilities for the type of marking transmitted between the die and the detection device and the transmission device, of which only a few examples are mentioned below:

• The press tool can be used in a press tool set with a die which has an optical coding which contains the identification. A barcode or a sequence of digits or a QR code can be mentioned as one possibility for such an optical coding. In this case, the detection device of the pressing tool can have a reading device, via which the optical coding can be detected. This reading device can be, for example, a type of camera or a scanner for optical coding.
• It is also possible that a die is used in the press tool set, which has a mechanical contact contour that provides the identification. In this case, the detection device has a mechanical scanning device for the mechanical contact contour. To give just one non-limiting example, the mechanical scanning device can have a scanning pin or a scanning roller that is moved along the mechanical contact contour. The sensed signal of the displacement of the stylus then contains the identification. However, it is also possible for a row or a field of styli to be pressed against a mechanical contact contour, with which the stylus is then deflected differently in accordance with the mechanical contact contour and the identification coded with the contact contour can be detected on the basis of the deflections of the stylus.
• It is also possible for the die to have an RFID unit, via which the identification is provided. The RFID unit sends out a particularly high-frequency signal, which contains the identification. In the event that the RFID unit is designed as a passive unit, it can be designed without its own power supply and can be supplied with electrical power in a manner known per se as a result of external excitation by an excitation unit, which can also be part of the pressing tool. which then enables the transmission of the signal having the identification. The detection device has a receiving device by means of which the signal emitted by the RFID unit can be received.
  As a special form for this type of marking and / or transfer of the marking between the die and the press tool, a technology can be used which is referred to as near field communication (or "near field communication", abbreviated "NFC"). This is an international transmission standard based on RFID technology for the contactless exchange of data by electromagnetic induction using loosely coupled coils over short distances of a few centimeters, whereby a data transmission rate can be a maximum of 424 kbit / s. A connectionless transmission can take place using passive HF-RFID tags according to ISO / IEC 14443 or ISO / IEC 1563 or a connection-based transmission between equivalent active transmitters.
  With regard to further information on RFID and NFC that can be used in the context of the invention, reference is made to the entry for "NFC" and "RFID" under Wikipedia (date of inspection 11.10.2018) and the literature references specified here as well as standard works relating to RFID and NFC Publications, in particular
  Klaus Finkenzeller: " RFID Manual: Fundamentals and practical applications of transponders, contactless chip cards and NFC ", Carl Hanser Verlag GmbH + Co. KG, 7th edition, ISBN: 9783446439436
  referred.
• It is also possible for a die to have a radiation or light transmitter in a press tool set, which emits the identification coded in a radiation or light signal. In this case, the detection device can have a receiver for a radiation or light signal. There are many possibilities for the type of radiation or light, the transmitter used in the die and / or the receiver used in the detection device of the pressing tool. For example, the transmitter can be an infrared sensor, a light cell or a diode. It is possible for the identification to be coded in the form of the frequency and / or the amplitude of the emitted radiation or light signal, it also being possible to use other forms of transmission and coding known from transmission or communications technology.
• It is also possible that the identification is transmitted via an inductive coupling between the die and the detection device. Here, the identification is transmitted via electromagnetic induction, for which purpose, for example, a signal transmission between an interrogation unit and an associated transponder can take place by switching a high-frequency magnetic field on and off, which can correspond to amplitude modulation. In this way, an electrical voltage in the coil is indicated in the transponder, which can then be rectified via a diode. However, other design forms are also possible.

• Möglich ist, dass es sich bei der Kennzeichnung um eine Kennzeichnung des Typs des Gesenks handelt, so dass mehrere baugleiche Gesenke oder auch Gesenke unterschiedlicher Bauart mit einem verbindenden charakteristischen Merkmal oder Einsatzzweck dieselbe Kennzeichnung aufweisen können.
• Möglich ist, aber (alternativ oder kumulativ) auch, dass die Kennzeichnung eindeutig und spezifisch für das jeweilige Gesenk ist, so dass diese ein-eindeutig ist und beispielsweise dem spezifischen Gesenk zugeordnete Kalibrierdaten, Soll-Presskraftverläufe verwendet werden können und in einer Prozessdokumentation exakt dokumentiert werden kann, welches Gesenk für das Verpressen eines Werkstücks eingesetzt worden ist.
• Schließlich ist auch möglich, dass die Kennzeichnung eine Authentifizierung des Gesenks ist, auf Grundlage welcher beispielsweise eine Prüfung möglich ist, ob ein Original-Gesenk und nicht ein nicht authentifiziertes Plagiat eingesetzt ist.

For the design of the marking of the die, which is detected by the detection device, there are various possibilities within the scope of the invention, some examples of which are given below:

• It is possible that the marking is a marking of the type of the die, so that several identical dies or also dies of different designs with a connecting characteristic feature or purpose can have the same identification.
• It is possible, however (alternatively or cumulatively), that the marking is unique and specific to the respective die, so that it is unambiguous and, for example, calibration data assigned to the specific die can be used, target press force profiles and exactly documented in a process documentation which die has been used for pressing a workpiece.
• Finally, it is also possible that the marking is an authentication of the die, on the basis of which, for example, a check is possible as to whether an original die and not an unauthenticated plagiarism is used.

• in einem Frequenzbereich von 1,5 GHz bis 3 GHz, vorzugsweise in einem Frequenzbereich von 2,0 bis 2,8 GHz oder 2,2 bis 2,6 GHz, oder
• in einem Frequenzbereich von 500 MHz ± 5 %, ± 10 % oder ± 20 %, 1800 MHz ± 5 %, ± 10 % oder ± 20 % oder 1900 MHz ± 5 %, ± 10 % oder ± 20 %

gilt. Hierbei kann die Strahlungsdurchlässigkeit insbesondere nach einem der Standards ASTM D4935-10, IEEE Std 299-2006, IEEEE Std 1128-1998 und ASTM A698/A698M-07 definiert sein.Preferably, in the press tool set, at least one interchangeable die has a recess or an interior. A transmission unit, in particular an RFID unit, can then be arranged in the recess or the interior, which transmits the identification. Alternatively or cumulatively, a transmission unit for a position signal, in particular a GPS signal, can be arranged in the recess or in the interior, which for example by a GPS unit, which can also be integrated into the interior, the recess or another recess of the die. The interior or the recess can be open to the outside or can be closed by a cover or a lacquer layer or other cover, which can also prevent moisture or dirt from being transferred to the transmitter unit and / or prevent mechanical impairments of the transmitter unit. In this case, the cover, the cover or the lacquer layer is preferably made of a material which has good radiation permeability for the signal emitted by the transmitter unit. The radiation permeability of the cover, the cover or the lacquer layer is preferably at least 20%, at least 50%, at least 100% or even at least 200 greater than the radiation permeability of a base material of the die, this in particular

• in a frequency range from 1.5 GHz to 3 GHz, preferably in a frequency range from 2.0 to 2.8 GHz or 2.2 to 2.6 GHz, or
• in a frequency range of 500 MHz ± 5%, ± 10% or ± 20%, 1800 MHz ± 5%, ± 10% or ± 20% or 1900 MHz ± 5%, ± 10% or ± 20%

applies. The radiation permeability can in particular be defined according to one of the standards ASTM D4935-10, IEEE Std 299-2006, IEEEE Std 1128-1998 and ASTM A698 / A698M-07.

The recess, which can be a milling or a bore, is preferably arranged in a flange region of the die covered by the pliers jaws. Here, a longitudinal extension of the recess or a bore for receiving the transmitting unit is preferably oriented transversely to the pliers head plane or swivel plane of the dies, or is arranged in this plane, wherein in the latter case the longitudinal axis can also be oriented parallel to the pressing force acting on the dies.

It is also possible that a press tool set, which consists of a press tool and the dies used therein, can be operated separately without interaction with other components or units. Another solution to the problem on which the invention is based proposes that a press tool (or a press tool set formed with the press tool and the die) be operated in a press tool network.

The press tool network has an electronic control unit which is designed and arranged externally (and possibly at a distance) from the press tool, which can be, for example, a PC, a tablet, a laptop or a smartphone. This electronic control unit then communicates with the detection device of the pressing tool, for which purpose an electronic control unit, which can be part of the detection device in the pressing tool or communicates with the detection device, can also be used. Communication can be wireless, in particular via Bluetooth or WLAN, or wired. For this purpose, the pressing tool can have a wireless transmitting and / or receiving device or a connection for a suitable cable connection, in particular a USB connection. The communication can take place unidirectionally from the pressing tool to the electronic control unit or vice versa, the communication preferably taking place bidirectionally. The communication can, as will be explained in more detail below, for example for the purpose of documenting the die used in the pressing tool, for providing information with regard to the workpiece which can be processed with the captured die, for providing characteristic data for evaluating a Crimping can be used to name just a few non-limiting examples.

It is possible that the electronic control unit communicating with the pressing tool is designed to be self-sufficient and has its own data memory or that it communicates with any other control units and / or data memories. The electronic control unit arranged externally from the pressing tool preferably communicates with an external data store, this communication being able to take place via a public network, which in turn can be done with suitable encryption. For example, the external data storage can be designed as a cloud storage. It is possible here for different users of pressing tools to access a common data storage (in particular cloud storage), which is then provided by a central person or a central company, for example the manufacturer of the pressing tool.

If an electronic control unit is mentioned in the following, this electronic control unit can be part of the pressing tool and in particular can cooperate with the detection device or form it. But it is also possible that this electronic control unit is the electronic control unit which is formed and arranged externally by the pressing tool and which optionally communicates with the external data storage or the cloud storage.

For a proposal of the invention, the electronic control unit has control logic that controls an output device. This output device is activated on the basis of the identification of the die detected by the detection device. As an alternative or in addition, the output device is activated on the basis of data from the data memory which are specific for the detected identification. Here, the control of the output device by the control unit takes place in such a way that an output is generated which contains information on the type of a workpiece which can be pressed with the die used in the pressing tool. For example, the output for the design of the pressing tool as a crimping tool can contain information about which type or which types of plugs, which cable or which types of cables and / or which additional seal, if any, are pressed with the die, the identification of which has been recorded can be. On the basis of the information provided to the user via the output, the user can then select the plug and the cable and, if appropriate, the seal or check whether the die is suitable for the workpiece in question. However, it is also possible for the user to recognize from the output that the existing die is not suitable for the workpiece to be pressed, so that the user can then insert another die into the press tool.

Alternatively or cumulatively, it is possible for the control unit of the electronic control unit to control an output of an output device or an entry into a data memory on the basis of the identification of the die detected by the detection device and / or on the basis of data from the or a data memory. The output or entry then contains information that the die is not authenticated for use in the press tool. In this way, the user can be informed or documented that, for example, a plagiarism of the die is used in the press tool or a die that is not suitable for the type of press tool used has been inserted into the die holder. In addition to the generation of the output or entry, other measures can also be taken, such as the generation of a warning signal or warning tone. In extreme cases, even an automated one The pressing tool is overridden in order to prevent the operation of the pressing tool with an unauthenticated die.

As an alternative or in addition, it is possible for the control logic of the control unit to load data from the data memory which are specific for the detected identification of the die. The data are characteristic of a target press force profile and / or a target press path profile. For example, the characteristic data can be a target pressing force curve over time, the target pressing force curve over the target pressing path curve or maxima, minima, gradients and the like. act. of the target press force profile or the target press path profile. Characteristic data for different target pressing force profiles and / or target pressing path profiles, which are generated with different pressing tools, workpieces and / or dies, can thus be stored in the data memory or in the cloud. On the basis of the detected marking of the die (and, if appropriate, an additional selection of the pressing tool and / or the workpiece to be pressed), the characteristic data specific for the detected marking can then be loaded from the data memory. In this case, the pressing tool has at least one sensor or switch. The sensor or switch can be used to detect an actual pressing force signal or an actual pressing path signal while passing through a pressing stroke, via which a workpiece is pressed in a pressing process with the die arranged in the die holder. The control unit then has control logic by means of which the pressing process is evaluated. This evaluation is carried out taking into account characteristic data, on the one hand, with regard to the desired pressure force curve and / or the desired press path curve and, on the other hand, with regard to the actual press force signal and / or the actual press path signal. To give just one explanatory example, the evaluation can be carried out by checking whether a maximum of the sensed actual pressing force signal lies within a predetermined tolerance range around the maximum of the desired pressing force curve. Depending on the result of the evaluation, output can then be given to an output device, appropriate documentation can be given, the pressing process can be terminated or the pressing tool can be overridden for further pressing processes and the like. Ä. done.

Alternatively or cumulatively, it is possible for a workpiece specification device to be present. Using the workpiece specification device, a workpiece specification of a workpiece which is to be pressed with the pressing tool can be entered or recorded. For example, the external electronic control unit, in particular the Laptop, PC or smartphone, using a keyboard or control panel, a workpiece number specific to the workpiece or plug (see contact numbers such as 25291 of plugs according to the applicant's "Tools for Professional Use" brochure, publication note 10/2011 and it may also be possible to enter or select a number for the cable to be crimped with the plug). However, it is also possible, for example, for the workpiece to be captured by means of a camera on the smartphone, tablet or laptop or an external camera, and for the workpiece to be recognized by means of image recognition and, based on this, to assign a workpiece specification. It is also possible for the workpiece specification device to have a barcode scanner which then detects a barcode specifying the workpiece. For these configurations, the electronic control unit has control logic which, on the one hand on the basis of the identification of the die detected by the detection device and on the other hand on the basis of the workpiece specification, analyzes whether the die is suitable for pressing the workpiece with the workpiece specification. For this analysis, the electronic control unit can access the external data storage or the cloud storage, where the permissible combinations of dies and workpieces are stored in a suitable form. Depending on the result of the analysis, an entry is then made in a documentation and / or an output is generated for the user.

A further solution to the problem on which the invention is based is a method for pressing a workpiece, as specified in claims 14 to 16.

Advantageous developments of the invention result from the patent claims, the description and the drawings. The advantages of features and of combinations of several features mentioned in the description are only examples and can have an alternative or cumulative effect without the advantages necessarily having to be achieved by embodiments according to the invention. Without changing the subject matter of the appended claims, the following applies with regard to the disclosure content of the original application documents and the patent: Further features can be found in the drawings, in particular the geometries shown and the relative dimensions of several components with respect to one another, as well as their relative arrangement and operative connection. The combination of features of different embodiments of the invention or of features of different claims is also possible, deviating from the selected back relationships of the claims, and is hereby suggested. This also applies to such Features that are shown in separate drawings or mentioned in the description. These features can also be combined with features of different claims. Features listed in the claims can also be omitted for further embodiments of the invention.

The number of features mentioned in the patent claims and the description should be understood in such a way that exactly this number or a greater number than the number mentioned is present without the explicit use of the adverb "at least" being required. If, for example, one element is mentioned, this is to be understood to mean that exactly one element, two elements or more elements are present. These characteristics can be supplemented by other characteristics or be the only characteristics that make up the respective product.

The reference symbols contained in the patent claims do not represent any restriction of the scope of the objects protected by the patent claims. They merely serve the purpose of making the patent claims easier to understand.

BRIEF DESCRIPTION OF THE FIGURES

Fig. 1

zeigt schematisiert ein Presswerkzeug-Netzwerk mit einem ein Presswerkzeug und ein auswechselbares Gesenk aufweisenden Presswerkzeug-Set, einer externen elektronischen Steuereinheit und einem externen Datenspeicher.

Fig. 2

zeigt schematisch ein Verfahren zum Verpressen eines Werkstücks mit einem Presswerkzeug.

Fig. 3

zeigt in einer räumlichen Darstellung zwei Gesenke mit jeweils darin angeordneten Sendeeinheiten für eine Kennzeichnung.

Fig. 4

zeigt in einer räumlichen Darstellung eine alternative Ausführungsform von zwei Gesenken mit jeweils darin angeordneten Sendeeinheiten für eine Kennzeichnung.

The invention is further explained and described below with reference to preferred exemplary embodiments illustrated in the figures.

Fig. 1

schematically shows a press tool network with a press tool set having a press tool and an exchangeable die, an external electronic control unit and an external data memory.

Fig. 2

shows schematically a method for pressing a workpiece with a pressing tool.

Fig. 3

shows in a spatial representation two dies, each with transmitter units arranged therein for identification.

Fig. 4

shows in a spatial representation an alternative embodiment of two dies, each with transmitter units arranged therein for identification.

FIGURE DESCRIPTION

Fig. 1 shows a press tool set 1. The press tool set 1 has a press tool 2 and interchangeable pairs of dies 3, 4. For the illustrated embodiment, the pressing tool 2 is a pressing tongs 5, which are designed here as crimping tongs 6. The pressing tongs 5 are actuated by the user by manual actuation of hand levers 7, 8. The hand levers 7, 8 are connected to die receptacles 10, 11 via a drive connection 9, not shown here, such that the relative pivoting of the hand levers 7, 8 to each other an opening or closing movement of the die receptacles 10, 11 results. For the formation of the pressing tool 2 as pressing tongs 5, the die receptacles 10, 11 are designed as pliers jaws 12, 13. The drive connection 9 extends inside a housing 14 of a mechanical pliers head 15.

The pressing tool 2 has an electronics module or electronics unit 16 which is arranged adjacent to the die receptacles 10, 11. For the exemplary embodiment shown, the electronic assembly 16 is held on the housing 14 of the mechanical pliers head 15, the electronic assembly 16 preferably being arranged on both sides of the mechanical pliers head 15, the electronic assembly being partially or completely around the mechanical pliers head 15 can extend. With regard to the structural design of the electronic assembly 16, the electrical or electronic design of the electronic assembly 16 and / or the connection of the electronic assembly 16 to the mechanical pliers head 15, reference is made to the unpublished European patent application with the official file number EP 18 173 803.0 referenced, which is made the subject of this patent application.

The force flow of the pressing force acting on a die 3 runs at least partially via a sensor 17, which detects a pressing force acting on the die 3. With regard to the possibilities of designing the sensor 17 and integrating it into a pressing tool, here with a division of the pressing force into a partial pressing force that acts on the sensor 17 and one other partial pressing force, which is guided in mechanical parallel connection past the sensor 17, is based on the unpublished European patent application EP 17 168 040.8-1809 referenced, which is made the subject of this patent application.

The dies 3, 4 each have a label 18, 19 which is specific for the associated die 3, 4 or the type of die 3, 4.

The electronic assembly 16 has an identification processing unit 20 which has a detection device 21, an electronic control unit 22, an output device 23 and an interface 24.

The identification processing unit 20 communicates on the one hand with the sensor 17 for the purpose of transmitting an actual pressing force signal 25 measured by the sensor 17 during the pressing stroke. It is possible that the sensor 17 or another sensor also determines an actual pressing path signal 26 during the pressing stroke. The marking processing unit 20, here the detection device 21, detects the markings 18, 19 of the dies 3, 4. As mentioned at the beginning, this can be done by detecting the marking 18, 19 in the form of an optical coding by a camera or a scanner or a reading device Detection device 21, detection of an identification in the form of a mechanical contact contour by a mechanical scanning device, by an RFID unit 27, 28 of the die 3, 4, which transmits the identification 18, 19, which is then detected by the detection device 21, near-field communication or a radiation or light transmitter 29, 30 of the dies 3, 4, the transmitted light or transmitted radiation of which contains the identification 18, 19 coded and is detected by the detection device 21, or by an inductive coupling between the die 3, 4 and detection device 21 to name just a few examples which do not limit the invention.

The identification processing unit 20 (or the electronic assembly 16) communicates via the interface 24 with an external electronic control unit 31, which can be designed as a PC, tablet, laptop or smartphone. The electronic control unit 31 has an output device 32, a data memory 33 and a workpiece specification device 34. The communication 35 between the interface 24 and the electronic control unit 31 is preferably bidirectional. The electronic control unit 31 is the Furthermore, via suitable interfaces in communication 36 with a data memory 37 (arranged externally by the control unit 31 and the pressing tool set 1), which is preferably a cloud memory 38.

The press tool set 1 communicates with the control unit 31 by means of the communication 35, which in turn communicates with the data memory 37 by means of the communication 36, thus forming a press tool network 39.

Fig. 2 shows a method for pressing a workpiece:
In a method step 40, a user selects dies 3, 4 from several pairs of dies and inserts them into die receptacles 10, 11 of a pressing tool 2.

In a method step 41, the identification 18, 19 of the dies 3, 4 is recorded by the detection device 21. As previously explained, this can be done by detecting an optical identification such as a bar code or QR code using a reading device, by mechanically scanning a scanning contour of the dies 3, 4, by receiving a signal from an RFID unit 27, 28, each associated with a die 3, 4, by the detection device 21, by inductive coupling and the like. Ä. done.

In a method step 42, the detected markings 18, 19 are processed by the control unit 22. It is possible that, on the basis of this processing, an output takes place at the output device 23. For example, the output device 23 can display which specific die 3, 4 (for example with a current die number) or which type of die is involved. It is also possible for the number of work strokes which the dies 3, 4 have already passed to be displayed on the output device 23, and when a threshold value for the number of work strokes is exceeded, the output device 23 also prompts for an exchange of the dies 3, 4 can be displayed. It is possible that the information required for this evaluation, such as the number of working strokes completed by the dies 3, 4, which are counted via a suitable counting device of the pressing tool 2, an assignment of the different identifiers 18, 19 of different pairs of dies to one type of the workpiece u. in a storage unit of the label processing unit 20 or the electronic assembly 16 are stored. However, this is not the case for the exemplary embodiment described here.

Rather, in a method step 43, the identification 18, 19 (or information obtained therefrom as a result of the processing by the control unit 22) is transmitted via the interface 24 by means of the communication 35 to the control unit 31, which is, for example, a smartphone or a Tablet is acting. The transmission is preferably wireless using WLAN or Bluetooth or wired.

In a method step 44, the control unit 31 in turn transmits the identifiers 18, 19 (or the information determined therefrom, possibly also with further processing by the control unit 31) by means of the communication 36 to the data store 37, which is designed in particular as a cloud store 38 . An assignment of the identification 18, 19 or the information determined therefrom to types or components of workpieces which can be processed with the dies 3, 4 assigned to the identification 18, 19 is stored in the data memory 37.

In view of this assignment and communication to the control unit 31 and / or the control unit 22, in a method step 45 the information can be made available in the control unit 31 and / or 22 for which workpiece, which type of workpieces or which types of workpieces or compositions the same, the dies 3, 4, which are arranged in the die receptacles 10, 11, are determined.

This information can be brought to the user's knowledge in a method step 46 via the output device 23 and / or 32. For example, in step 46, the user can be shown on the display of the smartphone which plugs, which cable and / or which seals can be used to crimp the dies 3, 4 used in the pressing tool 2.

It is also possible, for example, that the user enters a product or type number of the workpiece or of components via the workpiece specification device 34 of the control unit 31 and the control unit 31 indicates to the user that the crimping of this workpiece or the component thereof with the dies 3, 4 is permissible or not.

It is optionally and alternatively or cumulatively possible that, in a method step 47, the control unit 31 is provided with specific data 48 from the data memory 37 for the detected markings 18, 19, which is a target pressure force curve 49 and / or a target -Press route 50, slopes of the same, maxima, minima u. can act. If a workpiece is then pressed with the pressing tool 2, the actual pressing force signal 25 detected by the sensor 17 and / or the actual pressing path signal 26 is transmitted from the control unit 22 to the control unit 31 by means of the communication 35. The control unit 31 then uses a method step 51 to evaluate the pressing process, taking into account or comparing the desired pressing force curve 49 and / or the desired pressing path curve 50 on the one hand and the actual pressing force signal 25 and / or the actual pressing path signal 26. Such an evaluation can be used on the one hand to check whether there is any permissible use of the dies 3, 4 used for the workpiece pressed therein, since pressing an unsuitable workpiece (in particular with an unsuitable diameter, an unsuitable rigidity and / or not) matching geometry) for a deviation of the actual pressing force signal 25 from the desired pressing force curve 49 outside a tolerance range (which can also be made available by the data memory 37 via the communication 36 to the control unit 31). However, even if an admissible workpiece can be pressed with the dies 3, 4, the comparison can be used to monitor the process to determine whether the workpiece has been correctly inserted into the dies 3, 4 and the pressing stroke has been carried out correctly. If this is not the case, the actual pressing force signal 25 is also outside the tolerance range of the desired pressing force curve 49. A corresponding output can then be generated via the output device 32, for example an output such that the workpiece is pressed with the dies 3 , 4 was or was not permissible, the press stroke was carried out properly or not, or it is even possible to display the actual press force signal over time or over the actual press travel signal and / or the target press force profile over time or over the target press travel profile ( possibly also with a representation of the tolerance range), which also informs the user where the actual pressing force signal 25 has been within the tolerance range and whether the tolerance range has possibly been left.

Documentation can then take place in a method step 52 by making an entry in a data memory of the pressing tool 2, that is to say the electronic assembly 16 or the marking processing unit 20, in the data memory 33 and / or the data memory 37.

To give just one example, which does not restrict the invention, the entry in the date of the execution of the press stroke, the detected identification 18, 19, any data acquired or entered via the workpiece specification device 34 can include data on the result of the workpiece Evaluation of the pressing process, such as the actual pressing force signal 25 and / or the actual pressing path signal 26, exist.

Optionally, by means of the workpiece specification device 34, which can be based on an image acquisition of a workpiece to be pressed with an image recognition for recognizing the workpiece or the components thereof, or on a manual number input, a specification of the workpiece which is to be pressed with the pressing tool 2 can be made, respectively. This can then also be documented in step 52 by an entry. It is also possible that the control unit 31 then checks whether the specified workpiece and the dies 3, 4 are a permissible combination, the result then being able to be displayed via the output device 34. Alternatively or cumulatively, it is possible for the specified workpiece 48 from control unit 31 for the specified workpiece from data memory 37 to be available, as for the combination dies 3, 4 / specified workpiece, specific target press force profiles 49 and target press travel profiles 50 are provided, which can then be used as the basis for the evaluation described above. It is also possible for the user to be shown on a display device on the basis of the specification of the workpiece to be pressed entered or entered into this specification, which suitable die must be inserted into the die holder.

It is also possible that the identification processing unit 20 or the electronic assembly 16 has a GPS unit, by means of which a position of the pressing tool 2 can be automatically recognized. The position recognized in this way can then be transmitted to the external electronic control unit 31 via the communication 35. The position of the pressing tool 2 can then be displayed to the user on the external electronic control unit 31, possibly also with information on a route to the pressing tool 2. In this way, the user can find the pressing tool 2 again in a simplified manner if he has stored it somewhere. However, it is also possible for the die 3, 4 to have a GPS unit, the signal of which can then be transmitted (via the electronic assembly 16 or independently thereof) to the external electronic control unit 31, which then also on the external electronic control unit 31 the position of the die is known and can be displayed.

As a further option, the pressing tool 2 can also enable communication with a storage device for the pressing tool 2 and preferably for a multiplicity of further tools. For example, the storage device is a tool box, a tool trolley or a tool dispenser. The storage device is informed by means of communication that the pressing tool 2 is located in the storage device. This can take place automatically, for example, in that, in the case of pressing tool 2 arranged in the storage device, a signal emitted by the pressing tool 2 and specifying the pressing tool 2 is arranged in the reception area of a receiver of the storage device. The storage device can then provide an overview of the tools arranged in the storage device to a user and in particular can provide information as to whether the pressing tool 2 is located in the storage device or not. The same applies to dies 3, 4.

Fig. 3 shows dies 3, 4, in each of which a transmission unit 53, 54 for the markings 18, 19 is integrated. It is entirely possible that the transmission units 53, 54 have a battery or a rechargeable accumulator, so that they can actively transmit the identification 18, 19, which is triggered in particular by a suitable activation signal from the identification processing unit 20. However, the transmission units are preferred 53, 54 designed as RFID units 27, 28. According to Fig. 3 the dies 3, 4 have recesses 55, 56, which are designed here as blind holes 57, 58. The transmitter units 53, 54 are fitted with a precise fit in the recesses 55, 56, for which purpose the transmitter units 53, 54 can be cylindrical or cylindrical, for example. It is possible that a housing of the transmission units 53, 54 in a joining direction 59, in which the transmission units 53, 54 can be inserted into the recesses 55, 56 and which can correspond to the longitudinal axis of the blind holes 57, 58, or in the opposite direction in the die 3 , 4 are freely accessible so that the identification 18, 19 emitted by the transmission unit 53, 54 is not impeded or weakened by the dies 3, 4. It is also possible that the detection device 21 of the identification processing unit 20 is arranged in the region of the axis predetermined by the joining direction 59, so that the identification 18, 19 transmitted by the transmission units 53, 54 can be received without deflection. Is possible also that after the transmission units 53, 54 have been inserted into the associated recess 55, 56, the transmission unit 53 is covered to the outside, ie opposite to the joining direction 59, by a layer of lacquer. This lacquer layer is intended to allow the signal sent by the transmission units 53, 54, which contains the identification 18, 19, to pass through without this signal being excessively weakened or attenuated. In addition, the lacquer layer can seal an interior in the recess 55, 56, in which the transmission unit 53, 54 is received, to the outside, so that the ingress of moisture and / or dirt can be avoided. Finally, it is possible for the lacquer layer to provide the transmitter 53, 54 with a protective effect against mechanical impairments. A housing of the transmission unit 53, 54 or else the lacquer layer or some other cover is preferably formed flush with an outer surface 60 of the die 3, 4.

For the exemplary embodiments according to Fig. 3 and 4th the dies 3, 4 are basically designed as this in the patent DE 198 02 287 C1 is described. This is explained using the die 3 as an example, the corresponding also applying to the die 4. The die 3 has a flange region 61 and a die region 62. The flange region 61 is designed in the form of a plate and is accommodated with a transition fit or a play between the pliers jaw plates of the associated pliers jaw 12. The flange region 61 has a through hole 63 which is oriented transversely to the crimping force acting on the die 3 and transversely to the swivel plane of the dies 3, 4 and thus the pliers jaws 12, 13. In the state mounted on the pressing tongs 5, a fastening screw or a fastening pin extends through the through hole 63 and is held in both end regions in the mentioned jaw plates of the associated jaw 12. A step 65 can be present in a transition region 64 between the flange region 61 and the die region 62, without this being absolutely necessary. In the transition region 64, a base body of the die 3 has two bores 66, 67 oriented parallel to one another, which are oriented vertically to the crimping force acting on the die 3 and vertically to the swivel plane of the dies 3, 4. Bearing elements 68, 69 are held in the bores 66, 67. The bearing elements 68, 69 are preferably designed as pins or bolts which are accommodated in the bores 66, 67 with a precise fit. In the assembled state of the die 3 in the pliers jaw 12, the end regions of the bearing elements 68, 69 projecting from the flange region 61, here the semi-cylindrical outer surfaces of the pins or bolts, lie in appropriately shaped concave receptacles of the Pliers jaw plates, which ensures that the die 3 is held and guided on the associated pliers jaw 12.

The die area 62 protrudes from the pliers jaw plates in the direction of the other die and serves to form the die contour 70. With regard to further details on the basic configuration of the dies 3, 4, reference is made to the patent specification DE 198 02 287 C1 referred.

For the embodiment according to Fig. 3 the transmitter unit 53, 54 is arranged in the flange region 61, so that the transmitter units 53, 54 can be protected by the pliers jaw plates when the dies 3, 4 are mounted in the pressing tongs 5. The recess 55, 56 is preferably located on the side of the flange region 61 facing away from the die region 62.

Fig. 4 shows another example of the integration of the transmission units 53, 54 in the dies 3, 4. Although the transmission units 53, 54 are also arranged here in the flange region 61 of the dies 3, 4. However, the recesses 55, 56, here blind hole bores 57, 58, are arranged with an extension in the pliers head plane, an extension direction of the recesses 55, 56 or the blind hole bores 57, 58 preferably being oriented parallel to the pressing force. The pressing tongs 5 preferably form a cavity in the region of an axis predetermined by the joining direction 59, in particular between the jaw plates, which ensures good signal transmission. The marking processing unit 20 or the detection device 21 can then directly adjoin this cavity or further components or material areas can be arranged between the cavity and the detection device 21.

Various other types of integration of the transmitter units 53, 54 in the dies 3, 4 are possible. To name just a few, non-limiting examples, a recess or an interior of a die 3, 4, in which the transmission unit 53, 54 is arranged, can be closed by a cover. It is also possible for the flange region 61 or even the entire die 3 to be formed with two half-shells which form the interior for receiving the transmission unit 53, 54, the two half-shells being integrally connected to one another, for example by gluing or welding, and sealing the interior could be.

The distance of a transmission unit 53, 54 from an associated detection device 21 is preferably less than 3 cm, less than 2 cm, less than 1.5 cm or even less than 1 cm, this distance being at least partially due to the previously explained cavity of the pressing tongs 5 extends, which ensures good signal transmission.

If the identification 18, 19 or the transmission unit 53, 54 has an RFID, the corresponding applies to an excitation signal for an energy supply of the RFID emitted by the identification processing unit 20.

REFERENCE SIGN LIST

1

Press tool set

2nd

Press tool

3rd

Die

4th

Die

5

Crimping pliers

6

Crimping tool

7

Hand lever

8th

Hand lever

9

Drive connection

10th

Die shot

11

Die shot

12

Pliers jaw

13

Pliers jaw

14

casing

15

mechanical pliers head

16

Electronics assembly

17th

sensor

18th

Labelling

19th

Labelling

20th

Label processing unit

21st

Detection device

22

electronic control unit

23

Dispenser

24th

interface

25th

Actual press force signal

26

Actual press travel signal

27th

RFID unit

28

RFID unit

29

Radiation or light transmitter

30th

Radiation or light transmitter

31

external electronic control unit

32

Dispenser

33

Data storage

34

Workpiece specification device

35

communication

36

communication

37

Data storage

38

Cloud storage

39

Press tool network

40

Procedural step

41

Procedural step

42

Procedural step

43

Procedural step

44

Procedural step

45

Procedural step

46

Procedural step

47

Procedural step

48

Data

49

Target press force curve

50

Target press path

51

Procedural step

52

Procedural step

53

Transmitter unit

54

Transmitter unit

55

Recess

56

Recess

57

Blind hole

58

Blind hole

59

Joining direction

60

Outside surface

61

Flange area

62

Die area

63

Through hole

64

Transition area

65

step

66

drilling

67

drilling

68

Bearing element

69

Bearing element

70

Die contour

Claims (17)

Press tool (2) for pressing a workpiece with a die holder (10, 11) for receiving a replaceable die (3, 4), characterized in that the press tool (2) has a detection device (21) which is used to detect an identification ( 18, 19) of the die (3, 4) is set up. Press tool (2) according to claim 1, characterized in that the press tool (2) is a pressing tongs (5) which is operated manually via hand levers (8, 9). Press tool (2) according to claim 2, characterized in that the detection device (21) and / or an electronic control unit (22) are / is arranged in the region of a pliers head (15) of the pressing pliers (5). Press tool (2) according to one of the preceding claims, characterized in that the detection device (21) is arranged in the region or adjacent to the die holder (10, 11). Press tool (2) according to one of the preceding claims, characterized in that a) the detection device (21) has a reading device for identification (18, 19) in the form of an optical coding b) the detection device (21) has a mechanical scanning device for identification (18, 19) in the form of a mechanical contact contour and / or c) the detection device (21) has a receiving unit for a signal emitted by an RFID unit (27, 28) of the die (3, 4) and forming or including the identification (18, 19) and / or d) the detection device (21) has a receiver for a radiation or light signal which forms or includes the identification (18, 19) and / or e) the identification (18, 19) is transmitted via an inductive coupling between the die (3, 4) and the detection device (21). Press tool (2) according to one of the preceding claims, characterized in that the detected identification (18, 19) of the die (3, 4) a) is an identification of the type of the die (3, 4) and / or b) is a unique specific identification of the die (3, 4) and / or c) authentication of the die (3, 4). Press tool set (1) with a) a pressing tool (2) according to one of the preceding claims and b) at least one interchangeable die (3, 4) which has an identification (18, 19), c) wherein the detection device (21) of the pressing tool (2) is set up to detect the identification (18, 19) of the die (3, 4). Press tool set (1) according to claim 7, characterized in that the interchangeable die (3, 4) in a recess (55; 56) or in an interior a transmission unit (53, 54) for the identification (18, 19) and / or has a position signal. Press tool network (39) with a press tool (2) according to one of claims 1 to 6 or with a press tool set (1) according to claim 7 or 8, characterized in that an external electronic device is formed and arranged by the press tool (2) Control unit (31) is present, which communicates with the detection device (21) of the pressing tool (2). Press tool network (39) according to Claim 9, characterized in that the electronic control unit (31) arranged externally from the press tool (2) communicates with an external data memory (39). Press tool (2) according to one of claims 1 to 6, press tool set (1) according to claim 7 or 8 or press tool network (39) according to claim 9 or 10, characterized in that the or an electronic control unit (22; 31) Control logic which, based on the identification (18, 19) of the die (3, 4) detected by the detection device (21) and / or on the basis of data (48) specific to the detected identification from the or a data memory (33; 37) an output of an output device (23; 32), which contains information on the type of workpiece that can be pressed with the die (3, 4) used in the pressing tool (2). Press tool (2) according to one of claims 1 to 6 or according to claim 11, press tool set (1) according to claim 7, 8 or 11 or press tool network (39) according to one of claims 9 to 11, characterized in that the or An electronic control unit (22, 31) has control logic, which is based on the identification (18, 19) of the die (3, 4) detected by the detection device (21) and / or on the basis of data (48) from the or a data memory (33; 37) controls an output of an output device (23; 32) and / or an entry into or into the data memory (33; 37) which contains information that the die (3, 4) is not suitable for use is authenticated in the pressing tool (2). Press tool (2) according to one of claims 1 to 6 or according to claim 11 or 12, press tool set (1) according to claim 7, 8, 11 or 12 or press tool network (39) according to one of claims 9 to 12, characterized that a) the or an electronic control unit (22; 31) has control logic which, from the or a data memory (33; 37), has characteristic data (48) relating to a target pressure force profile (49) and / or to a target pressure path profile (50) that are specific to the detected identification (18, 19), b) the pressing tool (2) at least one sensor (17) or switch for detecting an actual pressing force signal (25) and / or an actual pressing path signal (26) during the passage of a pressing stroke, via which in a pressing process with that in the die holder (10, 11) arranged die (3, 4) a workpiece is pressed, and c) one or the electronic control unit (22; 31) has control logic, by means of which an evaluation of the pressing process taking into account characteristic data ca) of the desired pressing force curve (49) and / or the desired pressing path curve (50) and cb) of the actual Press force signal (25) and / or the actual press travel signal (26). Press tool (2) according to one of claims 1 to 6 or according to one of claims 11 to 13, press tool set (1) according to claim 7 or 8 or one of claims 11 to 13 or press tool network (39) according to one of claims 9 to 13, characterized in that a) a workpiece specification device (34) is provided, by means of which a workpiece specification of a workpiece which is to be pressed with the pressing tool (2) can be recorded or entered, b) one or the electronic control unit (22; 31) has control logic which ba) on the basis of the identification (18, 19) of the die (3, 4) detected by the detection device (21) and bb) based on the workpiece specification analyzes whether the die (3, 4) is suitable for pressing the workpiece with the workpiece specification, and which, depending on the result of the analysis, generates an entry and / or an output. Method for pressing a workpiece with a pressing tool (2) according to one of Claims 1 to 6 or according to one of Claims 11 to 14, with a pressing tool set (1) according to Claim 7 or 8 or one of Claims 11 to 14 or with one Press tool network (39) according to any one of claims 9 to 14, characterized in that a) a die (3, 4) is inserted into the pressing tool (2), b) the identification (18, 19) of the die (3, 4) is detected via the detection device (21) of the pressing tool (2), c) data (48) are loaded from one or the data memory (33; 37), which contain specific information for the detected identification (18, 19) as to which at least one type of workpiece with the die inserted into the pressing tool (2) (3, 4) can be pressed, and d) information is output via an output device (23; 32) on at least one type of workpiece which can be pressed with the die (3, 4). Method for pressing a workpiece with a pressing tool (2) according to one of Claims 1 to 6 or according to one of Claims 11 to 14, with a pressing tool set (1) according to Claim 7 or 8 or one of Claims 11 to 14 or with one Press tool network (39) according to any one of claims 9 to 15, characterized in that a) a die (3, 4) is inserted into the pressing tool (2), b) the identification (18, 19) of the die (3, 4) is detected via the detection device (21) of the pressing tool (2), c) characteristic data (48) relating to a target pressure force profile (49) and / or a target pressure path profile (50), which is specific to the detected identification (18, 19), is loaded from one or the data memory (33; 37) will, d) a sensor (17) detects an actual pressing force signal (25) and / or an actual pressing path signal (26) while passing through a press stroke, via which a workpiece is pressed in a pressing process with the die (3, 4), e) an assessment of the pressing process taking into account ea) the data (48) of the target pressure force profile (49) and / or the target pressure path profile (50) and eb) the actual pressing force signal (25) and / or the actual pressing path signal (26) he follows. Method for pressing a workpiece with a pressing tool (2) according to one of Claims 1 to 6 or according to one of Claims 11 to 14, with a pressing tool set (1) according to Claim 7 or 8 or one of Claims 11 to 14 or with one Press tool network (39) according to any one of claims 9 to 16, characterized in that a) a workpiece specification of a workpiece which is to be pressed with the pressing tool (2) is recorded or entered via a workpiece specification device (34), b) on the basis of the identification (18, 19) of the die (3, 4) detected by the detection device (21) and on the basis of the workpiece specification, it is analyzed whether the die (3, 4) for pressing the workpiece with the Workpiece specification is suitable, and c) depending on the result of the analysis, an entry and / or an output is generated.

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