EP3862136A1 - Werkzeug zum befestigen von schlauchklemmen an einem rohr - Google Patents

Werkzeug zum befestigen von schlauchklemmen an einem rohr Download PDF

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Publication number
EP3862136A1
EP3862136A1 EP21154889.6A EP21154889A EP3862136A1 EP 3862136 A1 EP3862136 A1 EP 3862136A1 EP 21154889 A EP21154889 A EP 21154889A EP 3862136 A1 EP3862136 A1 EP 3862136A1
Authority
EP
European Patent Office
Prior art keywords
tool
electric motor
proximity
control unit
working head
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP21154889.6A
Other languages
English (en)
French (fr)
Inventor
Claudio RIVA
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.)
Sofca Srl
Original Assignee
Sofca Srl
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sofca Srl filed Critical Sofca Srl
Publication of EP3862136A1 publication Critical patent/EP3862136A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B25B25/00—Implements for fastening, connecting or tensioning of wire or strip
    • B25B25/005—Implements for fastening, connecting or tensioning of wire or strip for applying wire clasps to hose couplings

Definitions

  • This invention generally relates to a smart tool for mounting hose clamps on a tube, a conduit or similar structure.
  • a known tool for mounting clamps on hoses comprises: a power source adapted to supply electrical or pneumatic power, a working head, adapted to use this power to move between an open configuration, in which it is suitable to receive a hose clamp, and a closed configuration, in which it is suitable to clamp said hose clamp on a tube; and transmission means interposed between said power source and said working head, and adapted to transmit said power to the working head to drive its movement between the open configuration and the closed configuration.
  • An object of this invention is to provide a tool for mounting hose clamps which does not suffer from the drawbacks of the prior art, and which has a better durability and reliability.
  • the invention is based on the idea of providing a tool for mounting hose clamps on a tube, comprising:
  • the tool further comprises at least one battery adapted to supply electric power to the electric motor.
  • the magnetic element is arranged integral with the transmission means and adapted to be drawn by said transmission means between a first position, wherein the working head is in the open configuration, and a second position, wherein the working head is in the closed configuration.
  • the proximity sensing means comprise a pair of sensors, in particular a first proximity sensor and a second proximity sensor, each adapted to generate a respective proximity signal when the relative distance between the magnetic element and, respectively, the first proximity sensor or the second proximity sensor, is less than a predetermined distance of measure.
  • a tool for mounting hose clamps according to this invention is generally indicated with 10.
  • the tool 10 essentially comprises an electric motor 12, a working head 16, a magnetic element 18, proximity sensing means 20, an electronic control unit 22, and a frame 24 adapted to support the components of the tool 10, as well as a pair of control buttons 38.
  • the electric motor 12 is fixed to the frame 24 by means of a flange of the motor 24b and is adapted to generate a driving torque when powered and when so commanded by the electronic control unit 22.
  • an electric motor 12 suitable for the tool 10 according to the invention may have a power between a few tens of W and about 200 W, for example a power of about 100 W.
  • the dimensions and numerical parameters reported here are purely illustrative and shall not be interpreted in a limiting manner.
  • the tool 10 preferably further comprises a battery 14.
  • the battery 14 is adapted to supply electric power to the electric motor 12, and is preferably made as a rechargeable battery, being therefore arranged for recharging through a dedicated electric connector.
  • the battery 14 may be provided as a replaceable battery.
  • a battery 14 suitable for the tool 10 according to the invention may have a capacity between a few tenths of Ah and about 2 Ah, for example a capacity of about 1.3 Ah, and a voltage, for example, of 18 V.
  • the tool 10 is powered by means of an electric power supply cable, in a manner known per se.
  • the working head 16 is mounted on the tool 10 in a removable manner, i.e., in a separable way, i.e., able to be disassembled from the frame 24, so as to be able to remove the working head 16 for cleaning or maintenance operations, or even so that it may be replaced entirely in case of damage, or if it is not suitable for the type of hose clamp to be mounted.
  • the connection between the working head 16 and the frame 24 may be provided in different forms, for example through a snap or bayonet connection, or through a threaded connection, or in any other way suitable for easily removing or replacing the working head 16.
  • the working head 16 is adapted to move between an open configuration, in which it is adapted to receive a hose clamp, and a closed configuration, in which it is adapted to clamp said clamp onto a tube.
  • the working head 16 may comprise a pair of clamping elements 26, rotatably mounted, each on a respective fulcrum F.
  • the clamping elements 26 are made in such a way as to have on one side a shape adapted to support and clamp a hose clamp, for example by means of two respective clamps 28, and on the other side to be moved between the open configuration and the closed configuration, for example by means of an internal profile 30 with a curved or beveled shape, as shown in Fig. 3a , 3b and 3c .
  • the working head 16 is adapted to move between the open configuration-as shown in Fig. 3a -that is, the configuration wherein it is possible to insert a hose clamp to be mounted, wherein the clamping elements 26 have a maximum relative distance from each other, and the closed configuration-as shown in Fig. 3c -that is, the configuration wherein the hose clamp is clamped on the tube, wherein the clamping elements 26 have a minimum relative distance from each other, passing through a plurality of intermediate configurations, one of which being shown in Fig. 3b .
  • the working head 16 is mounted so as to remain normally in the open configuration, for example by means of a torsion spring or other known means.
  • the movement of the working head 16 from the open to the closed configuration and vice versa is actuated by the driving torque generated by the electric motor 12.
  • This driving torque is transmitted to the working head 16 by means of the transmission means 32, interposed between the electric motor 12 and the working head 16, in a manner known per se.
  • a reduction mechanism adapted to multiply suitably the driving torque generated by the electric motor 12 according to the dimensional requirements and design of the tool 10.
  • the transmission means 32 comprise a worm screw 34, so as to be able to reduce the radial dimensions thereof to the minimum and to be able to convert a rotary motion generated by the electric motor 12 into an axial motion adapted to move the working head 16 between open and closed configurations.
  • the transmission means 32 further comprise a thrust element 36 adapted to contact the internal profile 30 of the pair of clamping elements 26, so as to push the working head from the open to the closed configuration.
  • the thrust element 36 may have a rod shape and be axially slidable, receiving the axial motion transmitted by the worm screw 34.
  • the tool 10 further comprises a magnetic element 18 and proximity sensing means 20 adapted to generate a proximity signal when the relative distance between the magnetic element 18 and the proximity sensing means 20 is less than a predetermined distance of measure.
  • the predetermined distance of measure depends on the sensitivity of the proximity sensing means 20 used and corresponds substantially to the distance below which the proximity sensing means 20 are adapted to detect the proximity of an object.
  • the magnetic element 18 is arranged integrally with the transmission means 32, while the proximity sensing means 20 are mounted integrally with the frame 24.
  • the configuration of the magnetic element 18 and of the proximity sensing means 20 is inverted; that is, the proximity sensing means 20 are mounted integral with the transmission means 32 and the magnetic element 18 is permanently mounted on the frame 24.
  • the magnetic element 18 may be formed, for example, of a simple bushing or a rod made of ferromagnetic or permanently magnetized material.
  • the magnetic element 18 is drawn by the transmission means 32 throughout the movement between two extreme positions, in particular between a first position, wherein the transmission means 32 are in such a configuration that the working head 16 is in the open configuration, and a second position, wherein the transmission means 32 are in a configuration such that the working head 16 is in the closed configuration.
  • the position of the magnetic element 18 depends on the configuration of the working head 16, and, in particular, the first position and the second position of the magnetic element 18 correspond to the two open and closed configurations, respectively.
  • the proximity sensing means 20 may be arranged on the frame 24 of the tool 10, whereby they may generate a proximity signal as a function of the relative position of the magnetic element 18 relative to the proximity sensing means 20.
  • the proximity sensing means 20 when the relative distance between the proximity sensing means 20 and the magnetic element 18 is less than a predetermined distance of measure, corresponding to the activation distance of the proximity sensing means 20, that is, the maximum distance below which the proximity sensing means 20 are activated, the proximity sensing means 20 generate a proximity signal and transmit it to the electronic control unit 22.
  • the proximity sensing means 20 may comprise induction sensors, or Hall effect sensors.
  • the proximity sensing means 20 comprise a pair of sensors 20a and 20b, in particular a first proximity sensor 20a and a second proximity sensor 20b, each adapted to generate a relative proximity signal when the relative distance between the magnetic element 18 and, respectively, the first proximity sensor 20a or the second proximity sensor 20b is less than a predetermined distance of measure, that is, when the magnetic element 18 is in, respectively, said first or second position, and to transmit said proximity signal to the electronic control unit 22.
  • the electronic control unit 22 may therefore determine whether the working head 16 is in the open or closed configuration according to how many and which proximity signals it receives, and control the generation of the driving torque by the electric motor 12, and therefore the movement of the working head 16 between the open configuration and the closed configuration and vice versa as a function of said proximity signal.
  • the electronic control unit 22 may also be configured to ignore a possible erroneous signal, as in the case in which two proximity signals indicating conflicting information are received.
  • the tool 10 is also provided with a pair of control buttons 38, adapted to transmit a command signal to the electronic control unit 22.
  • the pair of control buttons 38 is arranged and constructed in such a way that an operator must use both hands to activate the control buttons 38 simultaneously. For example, it is possible to arrange the pair of control buttons 38 at a distance from each other greater than that which may commonly be reached with a single hand. Or it is also possible to make the pair of control buttons 38 so as to require a pressure force generally not obtainable with one hand, and as such, for example, to require the use of both thumbs of an operator's hands.
  • the pair of buttons 38 is arranged on two opposite sides of the frame 24, so as to require an operator to use both hands to activate the pair of buttons 38 simultaneously, as shown in Fig. 2 .
  • the tool 10 further comprises a luminous indicator, adapted to signal information to the operator; for example, a light indicator may be adapted to signal visually the outcome of the clamping operation of the hose clamps, or also to signal a charging condition of the battery 14 of the tool 10.
  • the light indicator has two different indicator lights, in particular a first indicator light, for example a red light, adapted to light up in the event that the clamping operation of the hose clamps has not been completed correctly, and a second indicator light, for example a green light, adapted to light up if the clamping operation of the hose clamps has been completed correctly.
  • the light indicator is replaced or accompanied by an audible indicator adapted to signal information to the operator by means of sounds.
  • a mounting system 40 comprises the tool 10 for mounting hose clamps, a command control box 42, and, preferably, also a data management system 44.
  • the mounting system 40 is made in such a way as to allow data communication between the tool 10 and the command control box 42, preferably by means of wireless transceiver means 46, such as for example a Bluetooth or infrared or radio wave transmission system, and the command control box 42 is arranged to allow an operator to display information relating to the operation of the tool 10, such as the number of correctly mounted hose clamps, the charge level of the battery 14 of the tool 10, the torque generated by the electric motor 12, or a malfunction indicator for the tool 10 or one of the components thereof.
  • wireless transceiver means 46 such as for example a Bluetooth or infrared or radio wave transmission system
  • control box 42 is equipped with a display screen 48, and a keypad 50 for controlling the parameters of the display screen 48, as well as for entering parameters, data, programs, commands or instructions to be transmitted to the tool 10.
  • command control box 42 is equipped with a touch screen adapted to perform both the functions of the display screen 48 and the functions of the keypad 50, in a manner known per se.
  • the same command control box 42 is arranged to communicate with a plurality of tools 10, as well as to interface with the data management system 44, for example a data management system in a company server or in the cloud, for example by means of wireless transceiving means 46, such as for example a Bluetooth or infrared or radio wave transmission system, or, preferably, by means of wired data transmission.
  • the command control box 42 allows the data stored in each tool 10 to be transmitted to the same data management system 44 and analyzed jointly.
  • the operator initially checks the available program options and sets a predefined clamping program via the command control box 42 and, possibly, customizes the parameters of the selected clamping program.
  • the clamping program may be selected from a plurality of predefined programs, stored or defined by the user each time, or, again, self-defined by the command control box 42 through a self-learning function, for example through so-called deep learning algorithms, following a series of preliminary trial, training or testing operating cycles.
  • the clamping programs may include various parameters, such as the number of hose clamps to be mounted, the size thereof, as well as a plurality of physical control parameters to be checked during the execution of the clamping program or at the end thereof, such as for example the time interval wherein the electric motor 12 delivers driving torque or the evolution over time of the torque delivered by the electric motor 12, or an internal temperature of the tool 10 not to be exceeded.
  • the electronic control unit 22 may store a torque-stroke characteristic of the electric motor 12 by means of a self-learning procedure, in which, before the operative use of the tool 10, the tool 10 is used to perform a series of preliminary trial, training or test operating cycles, by means of which the electronic control unit 22 may extrapolate a torque-stroke characteristic of the electric motor 12 and store it.
  • a clamping program may comprise clamping a single clamp or even a plurality of hose clamps.
  • the operator positions a hose clamp to be mounted so that it is supported by the working head 16 in order that it may be clamped on a tube.
  • the working head 16 is in the open configuration, so as to be able to accommodate the hose clamp.
  • the electronic control unit 22 is configured to control the generation of the driving torque by the electric motor 12 according to a control logic comprising the following steps:
  • the electronic control unit 22 commands the start of the clamping cycle, first by commanding the electric motor 12 to activate and, therefore, a driving torque to be generated, and by regulating the driving torque generated by controlling the relative critical parameters, such as, for example, the stroke, the current used by the electric motor 12, and, possibly, detecting the driving torque by means of strain gauges applied on the transmission means 32, for example on a transmission shaft.
  • the electric motor 12 therefore, begins to deliver the driving torque that is first multiplied by the reduction mechanism and then transmitted, through the transmission means 32 to the working head 16, and in particular, converted by the worm screw 34 into an axial motion and transmitted through the thrust element 36 to the clamping elements 26.
  • the magnetic element 18 moves integrally with the transmission means 32 from the first position to the second position (or, in an alternative embodiment not described in detail, the sensing means 20 move integrally with the transmission means 32).
  • the proximity sensing means 20 detect the proximity of the magnetic element 18, in particular the second proximity sensor 20b detects that the magnetic element 18 has reached the second position and generates a proximity signal which is transmitted to the electronic control unit 22.
  • the electronic control unit 22 Upon receiving this proximity signal, the electronic control unit 22 sends an end-of-cycle signal, i.e., it commands the inversion of the driving torque generated by the electric motor 12 and transmitted to the working head 16.
  • the working head 16 Upon receiving an inverse driving torque, the working head 16 begins the movement to return from the closed configuration to the open configuration.
  • the magnetic element 18, which continues to move integrally with the transmission means 32 returns to the first position, and is detected by the first proximity sensor 20a, which sends a respective proximity signal to the electronic control unit 22 signaling that the magnetic element 18 has reached the first position, that is, returned to the initial position, and thus it is possible to start a new mounting and clamping cycle.
  • the electronic control unit 22 may also be configured to check the correct operation of the tool 10 and to provide, at the end of the clamping cycle, the operator with a signal or information indicating the success or failure of the clamping operation, and indirectly of the mounting.
  • the electronic control unit 22 may, for example, increase a counter for each hose clamp mounted, and, therefore, for each clamping cycle carried out and successfully completed, and automatically command the generation of driving torque by the electric motor 12 to be interrupted upon reaching a pre-set or predefined or user-defined number of mounted hose clamps.
  • the electronic control unit 22 may also be programmed to lock the tool 10 in a safe condition for the operator at the end of the clamping cycle or of the plurality of mounting cycles provided in the defined clamping program.
  • control unit 22 may be configured to verify the correct execution of a predefined clamping program comprising the clamping of one or more hose clamps by determining the number of correctly mounted hose clamps based on at least one of the following parameters: the presence of a proximity signal generated by the proximity sensing means 20 and the number of said proximity signals generated by the proximity sensing means 20.
  • control unit 22 may be configured to verify the correct execution of a predefined clamping program comprising clamping one or more hose clamps by means of a comparison of a target parameter of the predefined clamping program and at least one measured parameter representative of at least one among: the presence of at least one proximity signal generated by the proximity sensing means 20, the number of said proximity signals generated by the proximity sensing means 20, a stored torque-stroke characteristic of the electric motor 12, the instantaneous driving torque generated by the electric motor 12, the evolution of the driving torque generated by the electric motor 12 within a predefined time interval, a time interval comprised between the reception of two consecutive proximity signals generated by the proximity sensing means 20, and a total time period of generation of the driving torque of the electric motor 12.
  • the result of verifying the correct execution of the predefined clamping program may be communicated to the operator by means of the light indicator, for example by means of a first indicator light, for example a red light, adapted to light up if the verification has given a negative result, and a second indicator light, for example a green light, adapted to light up if the verification has a positive result.
  • a first indicator light for example a red light
  • a second indicator light for example a green light
  • the tool according to this invention is more precise and therefore more reliable than known tools for mounting hose clamps.
  • the tool comprises an electric motor and a battery
  • the tool does not need to be powered by an electric power cable or by a pneumatic power tube, ensuring the operator greater freedom of movement and therefore making the mounting and clamping of the hose clamps safer and easier.
  • a tool according to the invention together with a command control box and, preferably, a data management system, allows for the operating parameters of one or more tools to be controlled remotely, as well as, by analyzing the data obtained from each clamping cycle, for any errors by the operator or the predefined clamping program to be identified.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Supports For Pipes And Cables (AREA)
EP21154889.6A 2020-02-04 2021-02-03 Werkzeug zum befestigen von schlauchklemmen an einem rohr Withdrawn EP3862136A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102020000002128A IT202000002128A1 (it) 2020-02-04 2020-02-04 Utensile per il montaggio di fascette stringitubo su un tubo

Publications (1)

Publication Number Publication Date
EP3862136A1 true EP3862136A1 (de) 2021-08-11

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EP21154889.6A Withdrawn EP3862136A1 (de) 2020-02-04 2021-02-03 Werkzeug zum befestigen von schlauchklemmen an einem rohr
EP21154891.2A Active EP3868515B1 (de) 2020-02-04 2021-02-03 Werkzeug zum befestigen von schlauchklemmen

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Application Number Title Priority Date Filing Date
EP21154891.2A Active EP3868515B1 (de) 2020-02-04 2021-02-03 Werkzeug zum befestigen von schlauchklemmen

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IT (1) IT202000002128A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115383680A (zh) * 2022-08-16 2022-11-25 中建八局第二建设有限公司 一种装配式消防管道拧紧机具
WO2024008654A1 (en) * 2022-07-08 2024-01-11 Oetiker Schweiz Ag Pincer tool with asymmetrical wedge

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1103349A2 (de) * 1999-11-24 2001-05-30 Von Arx Ag Presswerkzeuggerät und Verfahren zu dessen Steuerung
US6240626B1 (en) * 1997-02-21 2001-06-05 Novopress Gmbh Pressen Und Presswerkzauge & Co. Kg Pressing device
EP3075492A1 (de) * 2015-04-02 2016-10-05 Milwaukee Electric Tool Corporation Pexcrimpwerkzeug
EP3616845A1 (de) * 2018-08-31 2020-03-04 TTI (Macao Commercial Offshore) Limited Presswerkzeug

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7464578B2 (en) * 2005-06-03 2008-12-16 Fci Americas Technology, Inc. Hand-held, portable, battery-powered hydraulic tool

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6240626B1 (en) * 1997-02-21 2001-06-05 Novopress Gmbh Pressen Und Presswerkzauge & Co. Kg Pressing device
EP1103349A2 (de) * 1999-11-24 2001-05-30 Von Arx Ag Presswerkzeuggerät und Verfahren zu dessen Steuerung
EP1103349B2 (de) * 1999-11-24 2006-07-26 Von Arx Ag "Verfahren zur Steuerung eines elektrisch betriebenen Presswerkzeuggerätes"
EP3075492A1 (de) * 2015-04-02 2016-10-05 Milwaukee Electric Tool Corporation Pexcrimpwerkzeug
EP3616845A1 (de) * 2018-08-31 2020-03-04 TTI (Macao Commercial Offshore) Limited Presswerkzeug

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024008654A1 (en) * 2022-07-08 2024-01-11 Oetiker Schweiz Ag Pincer tool with asymmetrical wedge
CN115383680A (zh) * 2022-08-16 2022-11-25 中建八局第二建设有限公司 一种装配式消防管道拧紧机具

Also Published As

Publication number Publication date
EP3868515B1 (de) 2023-09-06
IT202000002128A1 (it) 2021-08-04
EP3868515A1 (de) 2021-08-25

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