WO2023088644A1 - Dispositif de stylo chauffant, système de colle chaude doté du dispositif de stylo chauffant et procédé de chauffage d'un stylo pouvant être chauffé d'un dispositif de stylo chauffant - Google Patents

Dispositif de stylo chauffant, système de colle chaude doté du dispositif de stylo chauffant et procédé de chauffage d'un stylo pouvant être chauffé d'un dispositif de stylo chauffant Download PDF

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Publication number
WO2023088644A1
WO2023088644A1 PCT/EP2022/079733 EP2022079733W WO2023088644A1 WO 2023088644 A1 WO2023088644 A1 WO 2023088644A1 EP 2022079733 W EP2022079733 W EP 2022079733W WO 2023088644 A1 WO2023088644 A1 WO 2023088644A1
Authority
WO
WIPO (PCT)
Prior art keywords
pin
heating
detection
heating element
unit
Prior art date
Application number
PCT/EP2022/079733
Other languages
German (de)
English (en)
Inventor
Martin Spielhagen
Hector Sarnago Andia
Marco Faber
Timo Etzel
Oscar Lucia Gil
Asmir Rojo
Original Assignee
Robert Bosch Gmbh
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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Priority to EP22821852.5A priority Critical patent/EP4436721A1/fr
Priority to CN202280077147.3A priority patent/CN118284474A/zh
Publication of WO2023088644A1 publication Critical patent/WO2023088644A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00523—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes provided with means to heat the material
    • B05C17/00546—Details of the heating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00523—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes provided with means to heat the material

Definitions

  • Heater pen device hot-melt adhesive system with the heater pen device and method for heating a heatable pin of a heater pin device
  • a heating pen device with a heatable pen for dispensing from a medium, the pen comprising a heating element, with a base station comprising a receiving area for receiving the pen and a transmission unit for heating the heating element, the base station being provided for this purpose accommodating the pin in the receiving area for, in particular, inductive heating of the heating element of the pin by means of the transmission unit, with a sensor unit for detecting a temperature of the heating element and with a detection unit for detecting objects, in particular the pin and/or foreign bodies, in the recording area, has been suggested.
  • the invention is based on a heating pin device, in particular for a hot-melting device, with a pin that can be heated, in particular inductively, for dispensing a medium, in particular adhesive, with the pin comprising a heating element, with a base station which has a receiving area for receiving the pin and a transmission unit for, in particular, inductive heating of the heating element, the base station being provided for receiving the pin for, in particular, inductive, heating of the heating element of the pin by means of the transmission unit in the receiving area men, with a sensor unit for detecting a temperature of the heating element and with a detection unit for detecting objects, in particular the pin and/or foreign bodies, in the recording area.
  • the sensor unit comprises a sensor element which is formed as part of the pin, the sensor element being arranged at a distance from the heating element along an insertion direction for receiving the pin in the base station.
  • the pin is intended to be arranged on the base station, in particular in the receiving area, via a movement in the insertion direction relative to the base station.
  • the pin is preferably provided for heating the heating element, preferably with regard to a maximum longitudinal extension of the pin, to be arranged at least partially, in particular at least mostly, within the receiving area.
  • the maximum longitudinal extent of the pin extends along a main axis of extent of the pin.
  • the insertion direction is preferably aligned essentially parallel to the maximum longitudinal extension of the pin.
  • the direction of insertion is essentially straight. “Substantially parallel” is intended to mean, in particular, an orientation of a straight line, a plane or a direction, in particular the direction of insertion, relative to another straight line, another plane or a reference direction, in particular one encompassing the maximum longitudinal extension of the pin or the main axis of extension of the pin
  • Straight lines are understood, the straight line, the plane or the direction relative to the other straight line, the other plane or the reference direction having a deviation of less than 8°, advantageously less than 5° and particularly advantageously less than 2°.
  • the sensor element and the heating element are particularly preferably arranged at a distance from one another, viewed along the maximum longitudinal extension of the pin.
  • the direction of insertion should be understood as a direction in which the pin must be moved in order to be arranged at a designated position for heating the heating element within the receiving area of the base station.
  • the insertion direction is designed as an intended direction of movement of the pin for arranging the pin on the base station within the receiving area.
  • a minimum distance between the heating element and the sensor element is preferably parallel to the insertion direction and/or to the maximum longitudinal extension of the Stifts at least 0.5 cm, preferably at least 1 cm and more preferably at least 1.5 cm. It is conceivable that the heating element and the sensor element are connected to one another via a connecting element.
  • the sensor element is preferably designed as a winding, in particular a coil.
  • the sensor element consists of a metal.
  • the pin preferably includes a central axis which is in particular coaxial with the main axis of extension of the pin.
  • the sensor element has a central axis which is aligned essentially parallel to the central axis of the pin.
  • the sensor element preferably extends coaxially to the central axis of the pin, with a central axis of the sensor element around which the sensor element extends comprising the central axis of the pin.
  • the heating element is preferably made of a ferromagnetic metal, in particular stainless steel.
  • the heating element is preferably hollow, preferably sleeve-shaped.
  • the heating element delimits a passage, the heating element being intended to heat the medium for dispensing via the passage in at least one operating state for use of the pen.
  • the heating element is preferably arranged at least partially within an end region, in particular a front part, of the pin.
  • the sensor element is preferably arranged in front of the heating element, viewed along the direction of insertion.
  • the pen preferably comprises a housing, with the heating element and/or the sensor element in particular being arranged at least partially within the housing of the pen.
  • the transfer unit is preferably provided for inductive heating of the heating element.
  • the transmission unit preferably includes a transmission element which is designed in particular as an induction coil.
  • the base station preferably delimits a recess which forms the receiving area.
  • the transmission element preferably extends around a central axis of the recess.
  • the recess is preferably formed in a substantially longitudinal manner.
  • the recess has an essentially cylindrical basic shape.
  • the pin is intended to be arranged in the receiving area and/or within the recess for heating the heating element in such a way that the insertion direction and/or the maximum longitudinal extent of the pin is essentially parallel to the Central axis of the recess is aligned.
  • the transmission element is preferably arranged in such a way that the central axis of the recess runs centrally through a cross-sectional area of the transmission element.
  • the transmission element is preferably provided for the purpose of inductively heating the heating element via an alternating magnetic field when the pin is received on the base station, in particular the receiving area, and/or is arranged within the recess.
  • the sensor unit preferably comprises a detection element which is provided to interact with the sensor element, in particular without contact, in order to detect the temperature of the heating element.
  • the detection element is preferably designed as a winding, in particular a coil.
  • the detection element is preferably provided to be inductively coupled to the sensor element in order to detect the temperature of the heating element.
  • the heating pin device comprises in particular an evaluation unit which is provided for determining the temperature of the heating element as a function of a measurement signal of the detection element which is influenced by the sensor unit, in particular the sensor element.
  • the configuration of the heating pin device according to the invention advantageously allows easy separate detection of the sensor element and the heating element when the pin moves at least partially parallel to the insertion direction, for example when the pin is inserted into the base station.
  • an advantageously simple and rapid identification of the pin and/or differentiation of the pin from a foreign body can be made possible.
  • an advantageously simple and cost-effective identification of the pin at the base station can be achieved via a predetermined spacing of the heating element and the sensor element along the insertion direction on the pin.
  • the heating pin device comprises an evaluation unit, in particular the aforementioned evaluation unit, wherein the detection unit comprises a detection element, in particular the aforementioned detection element of the sensor unit, and at least two detection elements that can be detected by means of the detection element, which are located along the insertion direction are arranged at a distance from one another and separately from the detection element, in particular are designed as part of the pin, the evaluation unit being set up to arrange the pin in the receiving area and/or within the recess via sequential detection of the at least two detection elements by means of the detection element recognize.
  • the pin can be recognized easily and quickly and/or the pin can be distinguished from a foreign body when the pin is inserted into the base station.
  • the detection element is preferably provided to detect objects, in particular the pen and/or foreign bodies, in the recording area as a function of a change in a measurement signal.
  • the measurement signal is preferably in the form of a time profile of an electrical voltage which is influenced in particular by an electrical current through the detection element.
  • the detection element is preferably provided to be driven, in particular excited, with a control current to generate the measurement signal, with an alternating magnetic field being set up in particular, which extends at least partially through the recording area.
  • the measurement signal is preferably generated by influencing the alternating magnetic field generated via the detection element, for example by means of mutual induction with the sensor element, the heating element or a foreign body on the detection element.
  • the at least two detection elements are particularly preferably designed as part of the pin.
  • the detection element is preferably provided to detect the two detection elements when the pin is arranged on the base station, in particular the receiving area, and/or within the recess, preferably for heating the heating element.
  • the detection element is preferably provided to detect the two detection elements at a time interval from one another when the pin is arranged on the base station, in particular the receiving area, and/or within the recess, preferably for heating the heating element.
  • the at least two detection elements are preferably arranged and/or designed in such a way that when the pin is arranged on the base station, in particular the receiving area, and/or within the recess, the two detection elements preferably heat the heating element, preferably in the direction of insertion, one after the other past the detection element, in particular through the detection element through, to be moved.
  • the detection element is provided to detect the at least two detection elements via patterns, in particular decay times in the case of damping, in the measurement signal or in measurement signals that are recorded from one another over time.
  • the evaluation unit is preferably set up to evaluate the measurement signals of the detection element to identify the arrangement of the pin in the receiving area or within the recess.
  • the at least two detection elements are preferably arranged one behind the other viewed along the insertion direction, along the main axis of extent and/or along the maximum longitudinal extent of the pin.
  • An “evaluation unit” is intended in particular to mean a unit of a processor unit, for example an FPGA, a microcontroller, a processor or the like, and with a memory unit, for example a physical memory, a hard disk, a memory stick or the like, and with an operating program stored in the memory unit.
  • the evaluation unit includes control electronics.
  • the evaluation unit is preferably provided for controlling the detection element and/or the transmission unit.
  • the evaluation unit is preferably set up to recognize the arrangement of the pin in the receiving area and/or within the recess as a function of a predefined detection sequence of the detection elements, in particular the heating element and the sensor element.
  • the evaluation unit is preferably set up to compare a sequence of the detection elements detected via the detection element, in particular the heating element and the sensor element, with the predefined detection sequence of the detection elements, in particular the heating element and the sensor element, with the evaluation unit being set up to determine the arrangement of the pin in the receiving area and/or within the recess if the order of the detection elements detected via the detection element, in particular the heating element and the sensor element, essentially corresponds to the predetermined detection sequence of the detection elements, in particular the heating element and the sensor element.
  • the predetermined detection sequence of the detection elements includes a fixed sequence of the detection elements, in particular the heating element and the sensor element, with the heating element preferably being detected before the sensor element, and/or a time interval, within which the detection elements, in particular the heating element and the sensor element, are to be detected one after the other.
  • the evaluation unit be set up to be able to distinguish between the at least two detection elements, in particular when the pen is inserted into the receiving area along the insertion direction, by means of the detection element, preferably independently of an arrangement of the detection elements on the pen or the base station .
  • the detection element preferably independently of an arrangement of the detection elements on the pen or the base station .
  • insertion of the stylus at the base station with an incorrect orientation can be easily detected.
  • An unintentional incomplete insertion of the pin at the base station can advantageously be detected, in particular when one of the detection elements is detected in the absence of the other detection element.
  • the at least two detection elements are designed and/or arranged in such a way that measurement signals of the detection element generated via the two detection elements are designed to be different from one another, independently of a respective detection time of the measurement signals.
  • the at least two detection elements preferably have a different maximum extent parallel to the insertion direction and/or to the maximum longitudinal extent of the pin.
  • the at least two detection elements have a different density or mass distribution along their respective maximum extent, which is in particular aligned essentially parallel to the insertion direction and/or to the maximum longitudinal extent of the pin.
  • the at least two detection elements transverse to the insertion direction and/or to the maximum longitudinal extent of the pin have a different maximum transverse extent and/or a different density or mass distribution.
  • the at least two detection elements are designed and/or arranged in such a way that the two detection elements preferably heat up the heating element when the pen is arranged on the base station, in particular the receiving area, and/or within the recess, in particular when Moving past or moving through the detection element, have a mutually different minimum distance to the detection element.
  • the at least two detection elements consist of different materials or have different material compositions.
  • the evaluation unit is preferably set up to control and/or activate the transmission unit after detecting the pin in the receiving area and/or within the recess for heating the heating element.
  • the evaluation unit is set up to control and/or regulate the transmission unit for heating the heating element depending on the temperature of the heating element detected via the sensor unit.
  • the evaluation unit is preferably set up to recognize the arrangement of the pin in the receiving area and/or within the recess when the pin is arranged in a predetermined heating position.
  • the base station is intended to heat the heating element of the pen, in particular only when it is arranged in the heating position. It is conceivable for the base station to form at least one holding means in the receiving area and/or in the area of the recess, which is intended to hold and/or fix the pin in the heating position when it is arranged in the receiving area and/or within the recess .
  • the at least one holding means is an extension, a receiving recess, a hook or the like. formed and / or provided for a non-positive and / or positive connection with the pin in the heating position, for example via a latching or a clamp connection.
  • one of the at least two detection elements is designed as the heating element of the pen, with another of the at least two detection elements being designed as the sensor element.
  • An advantageously small number of different components of the heating pin device, in particular of the pin, can be made possible.
  • advantageously low production and maintenance costs can be achieved.
  • an advantageously low weight of the pin can be made possible.
  • the detection element is preferably provided to detect the heating element and the sensor element at a time offset from one another when the pin is arranged on the base station, in particular the receiving area, and/or within the recess, preferably for heating the heating element.
  • the evaluation unit is preferably set up to determine an arrangement of the pin in the receiving area and/or within the recess by sequentially detecting the To detect heating element and the sensor element by means of the detection element.
  • the detection element is arranged along the insertion direction at a distance from, in particular in front of, the transmission unit, in particular the transmission element.
  • An advantageously simple and cost-effective configuration of the detection element can be made possible, in particular since unwanted interference effects during detection can advantageously be reduced.
  • sequential detection of the heating element and another detection element, in particular the sensor element can be easily enabled when the pin is inserted for interaction with the conversion unit.
  • the detection element and the transmission element are arranged one behind the other, viewed along the central axis of the recess, which in particular forms the receiving area.
  • the detection element is designed as a winding, in particular a coil, and is designed as part of the sensor unit, the detection element being provided to determine a temperature of the heating element via interaction with the sensor element, the detection element being provided for this purpose is to sequentially detect the at least two detection elements to detect an arrangement of the pen in the receiving area.
  • the at least two detection elements are connected to one another via a connecting element of the pin, in particular in an electrically conductive manner. It can be an advantageous simultaneous detection of the pin or foreign bodies and detection of the temperature of the heating element via the two detection elements are made possible.
  • the connecting element is preferably designed as a temperature-dependent resistor, in particular an NTC resistor or a PTC resistor.
  • the connecting element preferably has an electrical resistance which changes as a function of a temperature of the connecting element.
  • the connecting element is particularly preferably connected to the heating element or the detection element in a thermally conductive manner.
  • the connecting element is preferably bonded to the heating element or the detection element.
  • the connecting element is preferably electrically conductively connected to the sensor element or the other detection element.
  • the detection element is particularly preferably provided to detect the temperature of the heating element via the sensor element connected to the connecting element, with the measurement signal of the detection element caused by the sensor element changing in particular as a function of the electrical resistance of the connecting element.
  • the sensor element and the connecting element are preferably connected in parallel to one another.
  • the detection unit comprises a detection element, in particular the aforementioned one, and a half-bridge circuit, which is provided to control the detection element to detect objects in the recording area and/or to detect the temperature of the heating element via the sensor element .
  • a measurement signal for detecting the pin or foreign bodies and for detecting the temperature of the heating element can be generated easily and inexpensively.
  • an advantageously low requirement for computing power of an evaluation unit for evaluating the measurement signal can be made possible.
  • an advantageously cost-effective configuration can be achieved.
  • the half-bridge circuit is designed as part of the base station.
  • the half-bridge circuit preferably includes two transistors, in particular two MOSFETs (metal oxide semiconductor field effect transistors).
  • the half-bridge circuit is preferably provided for switching the transistors with a time offset relative to one another.
  • the half-bridge circuit is preferably provided to apply a supply voltage that is constant over time to the detection element in a first switching state, with a first transistor of the two transistors being connected in particular.
  • the half-bridge circuit provided, in a second switching state, in which in particular a second transistor of the two transistors is switched on, to keep the detection element voltage-free or to apply a voltage to the detection element which is lower than the supply voltage.
  • the detection element is provided to generate a current flow through self-induction during a transition from the first switching state of the half-bridge circuit to the second switching state of the half-bridge circuit.
  • the half-bridge circuit preferably includes a capacitor which is provided to generate a voltage signal in the form of an AC voltage by the current induced via the detection element.
  • the capacitor and the detection element designed as a winding, in particular as a coil, preferably form an oscillating circuit which is intended in particular to be excited during the transition from the first switching state to the second switching state.
  • a fall time of the voltage signal preferably depends on other objects in the vicinity of the detection element, preferably in the receiving area and/or within the recess, in particular foreign bodies and/or the pin, preferably the heating element, the sensor element or the detection elements. It is conceivable that the evaluation unit is set up to determine the fall time of the voltage signal in the second switching state.
  • the fall time of the voltage signal corresponds to a time interval between switching from the first switching state to the second switching state and the voltage signal falling below a limit value, the absolute value of which is preferably greater than 0.
  • objects in the vicinity of the detection element preferably in the receiving area and/or within the recess, in particular foreign objects and/or the pin, preferably the heating element, the sensor element or the detection elements, cause changes in the energy of the alternating magnetic field of the detection element, whereby in particular the fall time is changed, in particular shortened or lengthened.
  • an inductive load caused by the sensor element connected to the connecting element which influences the alternating magnetic field of the detection element, depends on an instantaneous electrical resistance of the connecting element, which depends in particular on the temperature of the heating element.
  • the detection unit includes a detection element and a low-pass filter for evaluating a measurement signal from the detection element.
  • An advantageously short measurement signal can be implemented.
  • An advantageously high measuring frequency can thereby be made possible.
  • a measurement signal for detecting the pin or foreign bodies and for detecting the temperature of the heating element can be generated easily and inexpensively.
  • a measurement signal in the form of an attenuation curve can advantageously be made possible.
  • an advantageously cost-effective configuration of an evaluation unit can be achieved.
  • the low-pass filter is preferably provided to attenuate the voltage signal during a drop.
  • the low-pass filter is provided to convert the AC voltage caused by the capacitor into an essentially constantly falling voltage signal, which in particular forms the measurement signal.
  • the half-bridge circuit and/or the low-pass filter are/is formed together as an analog circuit.
  • the low-pass filter includes, in particular, a damping capacitor and two electrical resistors, which are connected in particular in parallel with the damping capacitor.
  • the snubber capacitor is connected in parallel with the capacitor.
  • the evaluation unit is preferably set up to determine the fall time of the damped voltage signal in the second switching state, with the limit value of the voltage signal for determining the fall time being greater than 0 in particular.
  • foreign bodies and/or the pin, in particular the heating element, the sensor element and/or the detection elements, in the receiving area or the recess act as an inductive load on the resonant circuit formed via the half-bridge circuit, the low-pass filter and the detection element.
  • the evaluation unit is preferably set up to determine an arrangement of the pin in the receiving area and/or within the recess, the presence of foreign bodies in the receiving area and/or within the recess and the temperature of the heating element, in particular when heating the heating element, via a value determined by the detection unit To recognize / record the fall time of the measurement signal / voltage signal.
  • the evaluation unit is preferably set up to activate the transmission unit when the pin, in particular the heating element and preferably then the sensor element, is/are detected in the receiving area and/or within the recess. It is conceivable that the evaluation unit is set up for this is to deactivate the transmission unit when the pin is arranged in the receiving area and/or inside the recess and a foreign body is also detected in the receiving area and/or inside the recess by means of the detection unit.
  • the detection unit is provided to detect a transition from the first switching state to the second switching state to determine the fall time for detecting an object, in particular the pin and/or a foreign body, in the receiving area and/or within the recess with a frequency of at least 10 Hz , preferably at least 50 Hz, more preferably at least 70 Hz and most preferably at least 100 Hz.
  • the sensor unit is intended to carry out a transition from the first switching state to the second switching state for determining the fall time for detecting the temperature of the heating element with a frequency of at least 2 Hz, preferably at least 5 Hz and particularly preferably at least 10 Hz.
  • the transmission unit is preferably provided for the purpose of detecting and preferably monitoring a power output of the transmission element when the heating element is heated, preferably at the start of a heating process.
  • the transmission unit is provided to interrupt and/or stop heating of the heating element and/or energization of the transmission element for heating the heating element if the detected power of the transmission element exceeds and/or falls below a predetermined limit value range of the power.
  • the power limit range is between 50 W and 200 W, preferably between 70 W and 150 W, particularly preferably between 80 W and 120 W and very particularly preferably between 90 W and 110 W
  • the evaluation unit is set up to interrupt and/or stop heating of the heating element and/or energization of the transmission element for heating the heating element if the evaluation unit detects a deviation from an expected correlation between the power and the temperature, for example if the performance of the transmission element increases at a substantially constant temperature.
  • a hot-melt adhesive system with a heating pin device according to the invention is also proposed.
  • the configuration of the hot-melt adhesive system according to the invention makes possible an advantageously high degree of safety and user-friendliness, in particular since an inserted pin can be recognized easily and quickly before the start of a heating process.
  • an advantageously compact and cost-effective configuration can be made possible.
  • the invention is based on a method for heating a, in particular inductively, heatable pin of a heating pin device, in particular a heating pin device according to the invention, via a base station of the heating pin device, wherein in at least one method step a heating element of the pin by means of a transmission unit of the base station, in particular inductively, is heated.
  • At least two detection elements of a detection unit of the heating pin device are detected at a time distance from one another by means of a detection element of the detection unit that is configured separately from the at least two detection elements be detected by means of an evaluation unit of the heating pin device, the arrangement of the pin in the receiving area via a sequential detection of the at least two detection elements.
  • a method step in particular the aforementioned method step, when the pin is inserted into the receiving area and/or the recess of the base station along the direction of insertion, the sensor element and the heating element of the pin are separated from the sensor element and the heating element, in particular as part the base station, formed detection element of the detection unit are detected at a time distance from each other.
  • the arrangement of the pin in the receiving area is preferably recognized by means of the evaluation unit via a sequential detection of the sensor element and the heating element, with the heating element being detected in particular when the pin is inserted in front of the sensor element.
  • the transmission unit is preferably activated the base station for heating the heating element if the arrangement of the pin in the recording area is detected by the evaluation unit.
  • the transmission unit is controlled and/or activated by means of the evaluation unit.
  • the pin is recognized via the detection unit, in particular the detection element, and the evaluation unit when the pin is arranged in the heating position on the base station.
  • the transmission unit is preferably activated by the evaluation unit when the predefined detection sequence is recognized.
  • the transmission unit is activated by the evaluation unit when the heating element and the sensor element are detected/detected by the detection unit, with the heating element being detected/detected in front of the sensor element. Heating of the heating element via the transmission unit, in particular by means of the evaluation unit, is preferably stopped or suspended if a detected power of the transmission element exceeds or falls below the specified limit value range of the power.
  • the configuration of the method according to the invention advantageously makes it possible to easily identify the pin when it is inserted into the receiving area, in particular before a heating process.
  • insertion of the pin into the receiving area or reaching an intended heating position of the pin in the receiving area for heating the heating element can advantageously be monitored in detail. This allows an advantageously high degree of safety when heating the pin.
  • the heating pin device according to the invention, the hot-melt adhesive system according to the invention and/or the method according to the invention should/should not be limited to the application and embodiment described above.
  • the heating pin device according to the invention, the hot-melt adhesive system according to the invention and/or the method according to the invention can have a number of individual elements, components and units as well as method steps that differs from the number specified herein to fulfill a function described herein.
  • values lying within the specified limits should also be considered disclosed and can be used as desired.
  • FIG. 1 shows a schematic cross section of a hot-melt adhesive system according to the invention with a heating pin device according to the invention, which is provided for carrying out a method according to the invention for heating a heatable pin, when the pin is inserted into a base station of the heating pin device,
  • FIG. 2 shows the schematic cross section of the hot-melt adhesive system according to the invention with the heating pin device according to the invention, the pin being arranged at least partially inside the base station in a heating position
  • FIG. 3 shows a schematic equivalent circuit diagram of the heating pin device according to the invention for detecting a temperature of a heating element of the pin and for detecting the pin and/or foreign bodies in a receiving area of the base station,
  • FIG. 4 shows a schematic representation of an exemplary measurement signal of the heating pin device according to the invention for detecting a temperature of a heating element of the pin and for detecting the pin and/or foreign bodies in a receiving area of the base station and
  • FIG. 5 shows a schematic representation of an exemplary sequence of the method according to the invention for heating the heatable Stifts Bankxvoroplasty invention via the base station.
  • a hot-melt adhesive system 10 for flexible dispensing of hot-melt adhesive is shown schematically in FIGS.
  • the hot-seal system 10 includes a heated pen apparatus 12 which includes a pen 14 and a base station 16 .
  • the pin 14 is intended to dispense the hot melt glue.
  • the pen 14 comprises in particular a loading chamber 18 for receiving solid adhesive elements of the adhesive, preferably pellets or the like.
  • the pen 14 includes a heating element 20 for heating the adhesive elements, with the adhesive elements in particular melting and being able to be dispensed as hot-melt adhesive.
  • the hot-melt adhesive system 10 is in particular designed to be wired and includes a power supply unit for supplying electricity to the heating pin device 12 (not shown in the figures), in particular to the base station 16.
  • the base station 16 includes a receiving area 22 for receiving the pin 14.
  • the receiving area 22 is connected by a substantially elongated cylindrical recess 24 is formed, which is limited by a housing 26 of the base station 16.
  • the base station 16 includes a holding means 28 designed as a stop surface for holding the pin 14 in a heating position within the recess 24 or in the receiving area 22 (cf. FIG. 2).
  • other configurations of holding means of the base station 16 are also conceivable, for example as clamps, as clamping elements, as hooks or the like.
  • the base station 16 comprises a transmission unit 30 for inductively heating the heating element 20.
  • the base station 16 is intended to receive the pin 14 for inductively heating the heating element 20 of the pin 14 by means of the transmission unit 30 in the receiving area 22, with the pin 14 in particular is arranged at least for the most part within the recess 24 (cf. FIG. 2).
  • the pin 14 is shown in FIG. In Figure 2, the pin 14 is shown in particular in the heating position for heating the heating element 20 via the transfer unit 30, in particular the pin 14 largely within the recess 24 and / or the holding means 28 is arranged.
  • Other configurations of the stylus 14 and/or the base station 16 are also conceivable, for example with a differently designed receiving area 22 which is arranged, for example, on the side of the housing 26 and/or wherein the stylus 14 is only partially received.
  • the pin 14 is intended to be arranged on the base station 16, in particular in the receiving area 22 or within the recess 24, via a movement along an insertion direction 32.
  • the direction of insertion 32 extends essentially parallel to a maximum longitudinal extension 34, a main axis of extension and/or a central axis 36 of the pin 14.
  • the direction of insertion 32 is essentially parallel to a central axis 38 when the pin 14 is inserted into the receiving region 22 of the receiving area 22/the recess 24 aligned.
  • the pin 14 is intended to be arranged on the base station 16 , in particular in the receiving area 22 , by moving in the insertion direction 32 relative to the base station 16 .
  • the pin 14 is provided for heating the heating element 20 or in the heating position, preferably with regard to the maximum longitudinal extent 34 of the pin 14, to be arranged at least largely within the receiving area 22.
  • the maximum longitudinal extent 34 of the pin 14 extends along a main axis of extent of the pin 14.
  • the insertion direction 32 is preferably aligned essentially parallel to the maximum longitudinal extent 34 of the pin 14.
  • the insertion direction 32 is essentially straight.
  • the heating pin device 12 includes a sensor unit 40 for detecting a temperature of the heating element 20 and a detection unit 42 for detecting objects, in particular the pin 14 and/or foreign bodies, in the receiving area 22, in particular within the recess 24.
  • the heating pin device 12 includes an evaluation unit 44, which is formed as part of the base station 16.
  • the evaluation unit 44 is embodied in particular as an equipped electronic circuit board and includes a processor unit embodied as a microcontroller (not shown in the figures).
  • the sensor unit 40 includes a sensor element 46 which is formed as part of the pin 14 .
  • the sensor element 46 is arranged along the insertion direction 32 for receiving the pin 14 in the base station 16 at a distance from the heating element 20 .
  • the sensor element 46 and the heating element 20 are arranged at a distance from one another viewed along the maximum longitudinal extension 34 of the pin 14 .
  • a minimum distance 48 of the heating element 20 and the sensor element 46 parallel to the insertion direction 32 and/or to the maximum longitudinal extension 34 of the pin 14 (see Figure 1) is at least 0.5 cm, preferably at least 1 cm and particularly preferably at least 1.5 cm.
  • the sensor element 46 is designed as a coil.
  • the sensor element 46 consists of a metal.
  • the sensor element 46 is configured coaxially to the central axis 36 of the pin 14 and extends around the central axis 36 of the pin 14 , a central axis of the sensor element 46 around which the sensor element 46 extends comprising the central axis 36 of the pin 14 .
  • the heating element 20 is made of a ferromagnetic metal, preferably stainless steel.
  • the heating element 20 is hollow, with the heating element 20 at least partially enclosing the loading chamber 18 .
  • the heating element 20 at least substantially completely encloses the loading chamber 18 as viewed along the central axis 36 of the pin 14 .
  • the heating element 20 is in particular sleeve-shaped and tapers towards a tip of the pin 14 .
  • the heating element 20 defines a passage 50 forming part of the loading chamber 18 .
  • the heating element 20 is provided for the purpose of heating the hot melt adhesive for dispensing via the feedthrough 50 in at least one operating state for using the pen 14 .
  • the heating element 20 is arranged in an end region 52, in particular a front part, of the pin 14, which forms the tip of the pin 14.
  • the sensor element 46 is arranged in front of the heating element 20 viewed in the direction of insertion 32 .
  • the stylus 14 includes a housing 54 , with the sensor element 46 being arranged at least for the most part within the housing 54 of the stylus 14 .
  • the transmission unit 30 includes a transmission element 56 which is designed as an induction coil. The transmission element 56 extends around the central axis 38 of the recess 24.
  • the pin 14 is intended to be arranged in the receiving area 22 and/or within the recess 24 for heating the heating element 20 in such a way that the insertion direction 32 and the maximum longitudinal extent 34 of the pin 14 is aligned substantially parallel to the central axis 38 of the recess 24 are.
  • the transmission element 56 is arranged in such a way that the central axis 38 of the recess 24 runs centrally through a cross-sectional area of the transmission element 56 .
  • the transmission element 56 is provided for the purpose of transmitting the heating element 20 via an alternating magnetic field when the pin 14 is received on the base station 16, in particular the receiving area 22, and/or is arranged within the recess 24, with the pin 14 being arranged in the heating position to heat inductively.
  • the detection unit 42 and the sensor unit 40 comprise, in particular together, a detection element 58 and two detection elements 60, 62 which can be detected by the detection element 58 and which are spaced apart from one another and arranged separately from the detection element 58 along the insertion direction 32.
  • the detection elements 60, 62 are formed as part of the pin 14.
  • the heating element 20 of the pin 14 forms a detection element 60 of the two detection elements 60 , 62 .
  • the sensor element 46 forms another detection element 62 of the two detection elements 60, 62.
  • the evaluation unit 44 is set up to detect an arrangement of the pin 14 in the receiving area 22/within the recess 24 by sequentially detecting the two detection elements 60, 62, in particular the heating element 20 and the sensor element 46, by means of the detection element 58.
  • the detection element 58 is intended to interact with the sensor element 46 in a contactless manner, in particular via an alternating magnetic field, in order to detect the temperature of the heating element 20 .
  • the detection element 58 is designed as a coil which is arranged around the recess 24 . In particular, the detection element 58 is arranged coaxially to the central axis 38 of the recess 24 .
  • Detection element 58 is intended to determine a temperature of heating element 20 via interaction with sensor element 46, and the two detection elements 60, 62, in particular heating element 20 and sensor element 46, to identify an arrangement of pin 14 in receiving area 22 to be recorded sequentially.
  • the detection element 58 is intended to be inductively coupled to the sensor element 46 in order to detect the temperature of the heating element 20 .
  • the evaluation unit 44 is provided for the purpose, as a function of a measurement signal 64 (see FIG. 4) influenced by the sensor unit 40, in particular the sensor element 46, of the socket element 58 to determine the temperature of the heating element 20.
  • the detection element 58 is provided to detect the heating element 20 and the sensor element 46 with a time offset relative to one another, preferably for heating the heating element 20 .
  • Evaluation unit 44 is set up to detect an arrangement of pin 14 in receiving area 22 and/or within recess 24 by sequentially detecting detection elements 60, 62, in particular heating element 20 and sensor element 46, using detection element 58.
  • the detection unit to include, in addition to the heating element 20 and the sensor element 46 , detection elements which are preferably designed as part of the pin 14 , for example the housing 54 of the pin 14 .
  • the detection element 58 is provided to detect objects, in particular the pin 14 and/or foreign bodies, in the recording area 22 as a function of a change in the measurement signal 64 .
  • the measurement signal 64 is in the form of a time profile of an electrical voltage on a circuit connected to the detection element 58 (see FIGS. 3 and 4).
  • the detection element 58 is intended to be driven, in particular excited, with a control current in order to generate the measurement signal 64 , with an alternating magnetic field being set up in particular, which extends at least partially through the recording area 22 .
  • the detection element 58 is provided so that an electric current flows in the detection element 58 by influencing the alternating magnetic field generated via the detection element 58 by means of mutual induction with the sensor element 46, the heating element 20 or a foreign body.
  • Sensing element 58 is provided to combine the two detection elements 60, 62, in particular heating element 20 and sensor element 46, when pin 14 is arranged on base station 16, in particular receiving area 22, and/or within recess 24, preferably into one Heating of the heating element 20 to detect.
  • the detection element 58 is provided to combine the two detection elements 60, 62, in particular the heating element 20 and the sensor element 46, when the pin 14 is arranged on the base station 16, in particular the receiving area 22 and/or within the recess 24, preferably into one Heating of the heating element 20 to detect spaced in time.
  • the two detection elements 60, 62, in particular the heating element 20 and the sensor element 46 are arranged and/or designed in such a way that when the pen 14 is arranged on the base station 16, in particular the receiving area 22 and/or inside of the recess 24, in the direction of insertion 32 in chronological succession past the gripping element 58, in particular through the gripping element 58.
  • the detection element 58 is provided to detect the two detection elements 60, 62, in particular the heating element 20 and the sensor element 46, each via a measurement signal 64, with measurement signals 64 for detecting the two detection elements 60, 62, in particular the heating element 20 and the sensor element 46, are timed from each other.
  • the evaluation unit 44 is set up to evaluate measurement signals 64 generated via the detection element 58 in order to identify the arrangement of the pin 14 in the receiving area 22 or within the recess 24 .
  • the two detection elements 60, 62, in particular the heating element 20 and the sensor element 46, are arranged one behind the other viewed along the insertion direction 32, along the main axis of extent and/or along the maximum longitudinal extent 34 of the pin 14.
  • the evaluation unit 44 is provided for controlling the detection element 58 and the transmission unit 30 .
  • Evaluation unit 44 is set up to recognize the arrangement of pin 14 in receiving area 22 and/or within recess 24 as a function of a predetermined detection sequence of detection elements 60, 62, in particular heating element 20 and sensor element 46.
  • Evaluation unit 44 is set up to compare a sequence of detection elements 60, 62, in particular heating element 20 and sensor element 46, detected via detection element 58 with the predefined detection sequence of detection elements 60, 62, in particular heating element 20 and sensor element 46 , wherein the evaluation unit 44 is set up to detect the arrangement of the pin 14 in the receiving area 22 and/or within the recess 24 if the order of the detection elements 60, 62 detected via the detection element 58, in particular the heating element 20 and the sensor element 46, essentially corresponds to the predetermined detection sequence of the detection elements 60, 62, in particular of the heating element 20 and the sensor element 46.
  • the predetermined detection sequence of the detection elements 60, 62, in particular of heating element 20 and sensor element 46 comprises in particular a fixed sequence of detection elements 60, 62, in particular heating element 20 and sensor element 46, with heating element 20 preferably being detected before sensor element 46, and a time interval within which detection elements 60, 62 , in particular the heating element 20 and the sensor element 46, are to be detected one after the other.
  • the two detection elements 60, 62 are connected to one another via a connecting element 66 of the pin 14 designed as an NTC resistor.
  • the connecting element 66 is designed as part of the sensor unit 40 and is provided for detecting the temperature of the heating element 20 via the sensor element 46 and the detection element 58 .
  • the connecting element 66 has an electrical resistance that changes as a function of a temperature of the connecting element 66 .
  • the connecting element 66 is at least thermally conductively connected to the heating element 20 or the detection element 60 .
  • the connection element 66 is designed to change its temperature depending on a temperature of the heating element 20 .
  • the connecting element 66 is in particular materially connected to the heating element 20 or the detection element 60 .
  • the connecting element 66 is at least electrically conductively connected to the sensor element 46 or the other detection element 62 .
  • Detection element 58 is provided to detect the temperature of heating element 20 via sensor element 46 connected to connecting element 66, with the measurement signal of detection element 58 caused by sensor element 46 changing in particular as a function of the electrical resistance of connecting element 66. In particular, a change in the electrical resistance of the connecting element 66 changes an inductive load for the alternating magnetic field generated via the detection element 58 .
  • the detection element 58 is arranged along the insertion direction 32 at a distance from the transmission unit 30, in particular the transmission element 56.
  • the detection element 58 is along the insertion direction 32 in front of the transmission unit 30, in particular the transmission flow element 56 arranged.
  • the connecting element 66 is arranged at least for the most part, in particular substantially completely, between the sensor element 46 and the heating element 20 viewed along the insertion direction 32 or perpendicular to the maximum longitudinal extent 34 and/or to the central axis 36 of the pin 14 .
  • the connecting element 66 is formed separately from the heating element 20 and is preferably arranged in the vicinity of the heating element 20 in such a way that the connecting element 66 is thermally conductively coupled to the heating element 20 .
  • Evaluation unit 44 is set up to detect the two detection elements 60, 62, in particular the heating element 20 and the sensor element 46, when the pin 14 is inserted into the receiving area 22 along the insertion direction 32 by means of the detection element 58, preferably independently of an arrangement of the detection elements 60 , 62 on the stylus 14 or base station 16.
  • the two detection elements 60, 62, in particular the heating element 20 and the sensor element 46 are designed and/or arranged in such a way that measurement signals 64 of the detection element 58 generated via the two detection elements 60, 62 are designed to be different from one another, independently of a respective detection time of the measurement signals 64 .
  • the two detection elements 60, 62 in particular the heating element 20 and the sensor element 46, have a different maximum extent parallel to the insertion direction 32 and/or to the maximum longitudinal extent 34 of the pin 14.
  • the two detection elements 60, 62, in particular the heating element 20 and the sensor element 46 have a different density from one another along their respective maximum extent, which is in particular aligned essentially parallel to the insertion direction 32 and/or to the maximum longitudinal extent 34 of the pin 14. or mass distribution.
  • the two detection elements 60, 62 transverse to the insertion direction 32 and/or to the maximum longitudinal extent 34 of the pin 14 have a different maximum transverse extent and/or a different density or mass distribution.
  • the evaluation unit 44 is set up to the transmission unit 30 after detecting the pin 14 in the Control receiving area 22 and / or within the recess 24 for heating the heating element 20 and / or to activate.
  • the evaluation unit 44 is set up to control and/or regulate the transmission unit 30 for heating the heating element 20 depending on the temperature of the heating element 20 detected via the sensor unit 40 .
  • the evaluation unit 44 is set up to detect the arrangement of the pin 14 in the receiving area 22 and/or within the recess 24 when the pin 14 is arranged in a predetermined heating position.
  • the base station 16 is intended to heat the heating element 20 of the pen 14, in particular only when arranged in the heating position.
  • the detection unit 42 includes a half-bridge circuit 68 which is provided to control the detection element 58 to detect objects in the recording area 22 and/or to detect the temperature of the heating element 20 via the sensor element 46 .
  • the half-bridge circuit 68 is formed as part of the base station 16 .
  • the half-bridge circuit 68 includes two transistors 70, 72 designed as MOSFETs.
  • the evaluation unit 44 is set up to switch the two transistors 70, 72 with a time offset relative to one another, in particular alternately.
  • the half-bridge circuit 68 is provided to apply a supply voltage that is constant over time to the detection element 58 in a first switching state, with a first transistor 70 of the two transistors 70, 72 in particular being switched on (cf. FIG. 4).
  • the half-bridge circuit 68 is provided to keep the detection element 58 voltage-free in a second switching state, with a second transistor 72 of the two transistors 70, 72 in particular being switched on, with an electric current through the detection element 58 being eliminated in particular compared to the first switching state .
  • an electrical countercurrent is induced by the change in an electrical current through the detection element 58 .
  • the detection element 58 is provided to generate a current flow by self-induction during a transition from the first switching state of the half-bridge circuit 68 to the second switching state of the half-bridge circuit 68 .
  • the half-bridge circuit 68 includes a capacitor 74 provided for this purpose is to generate a voltage signal in the form of an AC voltage by the current induced across the sensing element 58 .
  • the capacitor 74 and the detection element 58 designed as a coil preferably form an oscillating circuit which is provided in particular to be excited during the transition from the first switching state to the second switching state.
  • a fall time of the voltage signal depends in particular on other objects in the vicinity of detection element 58, preferably in receiving area 22 and/or within recess 24, in particular on foreign bodies and/or pin 14, preferably heating element 20, sensor element 46 or the detection elements 60, 62.
  • the detection unit 42 includes a low-pass filter 76 for filtering the voltage signal generated by the detection element 58 .
  • the low-pass filter 76 is provided to attenuate the voltage signal.
  • the low-pass filter 76 is provided to convert the AC voltage produced by the capacitor 74 into an essentially constantly falling voltage signal, which in particular forms the measurement signal 64 .
  • the half-bridge circuit 68 and the low-pass filter 76 are formed together as an analog circuit.
  • the low-pass filter 76 includes a damping capacitor 78 and two electrical resistors 80, 82 which are connected in parallel with the damping capacitor 78 in particular.
  • the snubber capacitor 78 is connected in parallel with the capacitor 74 .
  • Evaluation unit 44 is set up to determine the fall time of the damped voltage signal, in particular measurement signal 64, in the second switching state, with a limit value of the voltage signal for determining the fall time being greater than 0 in particular.
  • the fall time of the voltage signal corresponds to a time interval between switching from the first switching state to the second switching state and the voltage signal falling below the limit value (cf. FIG. 4).
  • objects in the vicinity of detection element 58 preferably in receiving area 22 and/or within recess 24, in particular foreign objects and/or pin 14, preferably heating element 20, sensor element 46 or detection elements 60, 62, cause changes in each case an energy of the alternating magnetic field of the detection element 58, in which case the fall time in particular is changed, in particular shortened or lengthened.
  • foreign bodies and / or act Pin 14 in particular the heating element 20, the sensor element 46 and the detection elements 60, 62, in the receiving area 22 and the recess 24 as an inductive load on the half-bridge circuit 68, the low-pass filter 76 and the detection element 58 formed resonant circuit.
  • Evaluation unit 44 is set up to determine an arrangement of pin 14 in receiving area 22 and/or within recess 24, the presence of foreign bodies in receiving area 22 and/or within recess 24, and the temperature of heating element 20, in particular when heating element 20 is being heated , via a fall time of the measurement signal 64/voltage signal determined by means of the detection unit 42. Evaluation unit 44 is set up to activate transmission unit 30 when the pin, in particular the heating element and preferably then the sensor element, is/are detected in the receiving area and/or within the recess..
  • Detection unit 42 is intended to detect a transition from the first switching state to the second switching state for determining the fall time for detecting an object, in particular the pin and/or a foreign body, in the receiving area and/or within the recess with a frequency of at least 10 Hz, preferably at least 50 Hz, particularly preferably at least 70 Hz and most preferably at least 100 Hz.
  • the sensor unit is intended to carry out a transition from the first switching state to the second switching state to determine the fall time for detecting the temperature of the heating element with a frequency of at least 2 Hz, preferably at least 5 Hz and particularly preferably at least 10 Hz.
  • the transmission unit 30 is intended to detect and monitor a power output of the transmission element 56 via the transmission element 56 when the heating element 20 is heated, preferably at the beginning of a heating process.
  • the transmission unit 30 is provided to stop heating of the heating element 20 and/or energization of the transmission element 56 for heating the heating element 20 if the detected power of the transmission element 56 exceeds or falls below a predetermined limit value range of the power.
  • the specified limit value range for the power is between 50 W and 200 W, preferably between 70 W and 150 W, particularly preferably between 80 and 80 W and 120 W and very particularly preferably between 90 W and 110 W.
  • the specified limit value range of the power is stored or can be stored in particular in the evaluation unit 44 .
  • the evaluation unit 44 is set up to monitor a correlation between the detected power of the transmission element 56 and the temperature of the heating element 20 detected via the sensor unit 40 . Evaluation unit 44 is set up to stop heating of heating element 20 and/or energization of transmission element 56 for heating of heating element 20 if evaluation unit 44 detects a deviation from an expected correlation between the power and the temperature, for example if the Performance of the transmission element 56 increases at a substantially constant temperature.
  • the evaluation unit 44 and/or the sensor unit 40 are/is preferably set up/provided to determine the temperature of the heating element 20 when the pin 14 is arranged or detected in the receiving area 22, in particular the heating position. If the pin 14 is not detected in the receiving area 22, in particular via the detection sequence, or if a foreign body is detected in the receiving area 22 via the detecting unit 42, the temperature is not detected and/or the transmission unit 30 is not activated.
  • FIG. 4 shows an exemplary measurement signal 64 from detection unit 42 .
  • the half-bridge circuit 68 switches from the first switching state to the second switching state.
  • FIG. 4 shows the signals of the detection unit 42 or sensor unit 40 for a detection of an individual temperature of the heating element 20 or a detection of the sensor element 46 or the heating element 20 when the pin 14 is inserted into the base station 16, in particular the recording area 22.
  • the abscissas 96 shown in FIG. 4 represent an elapsed time.
  • An ordinate 98 represents a signal strength of the signals shown in each case in ADC units a countercurrent is induced in the detection element 58 .
  • the counter current oscillates through the capacitor 74 .
  • the counterflow essentially describes a damped oscillation curve over a time interval dti.
  • the low-pass filter 76 converts an electrical voltage 88 oscillating at the capacitor 74 as a result of self-induction of the detection element 58 into the continuously falling measurement signal 64 .
  • the fall time is in the form of a time interval 90 between the time ti and when the measurement signal 64 falls below a limit value 84, in particular at the time ta.
  • the fall time is determined from the measurement signal 64 using the evaluation unit 44 . If it is determined that the measured signal 64 falls below the limit value 84, in particular at the time ts, the half-bridge circuit 68 preferably switches back to the second switching state, with an essentially constant voltage being applied in particular to the detection element 58.
  • switching signals 92, 94 are shown at the top in FIG.
  • the first transistor 70 is switched via the switching signal 92 .
  • the second transistor 72 is switched via the other switching signal 94, preferably for a transition from the first switching state to the second switching state.
  • FIG. 5 schematically shows an exemplary sequence of a method 100 for inductively heating the heatable pin 14 of the heating pin device 12 via the base station 16 of the heating pin device 12 .
  • the pin 14 is arranged from the outside on the base station 16, the pin 14 being arranged largely in the recess 24 in the insertion direction 32 along the central axis 38 of the recess 24 (cf. FIG. 2).
  • a method step of method 100 in particular method step 102, when the pen 14 is inserted into the receiving area 22 of the base station 16 along the insertion direction 32, the two detection elements 60, 62 of the detection unit 42, in particular the heating element 20 and the sensor element 46, are detected by means of the separate from the two detection elements 60, 62 formed detection element 58 of the detection unit 42 detected spaced apart in time.
  • the heating element 20 is detected before the sensor element 46 in time.
  • the arrangement of the pin 14 in the receiving area 22 is detected by means of the evaluation unit 44 of the heating pin device 12 via a sequential detection of the two detection elements 60, 62, in particular the heating element 20 and the sensor element 46.
  • the predetermined detection sequence and thus an arrangement of the pin 14 in the receiving area 22 or within the recess 24 is recognized by means of the evaluation unit 44 .
  • the transmission unit 30, in particular the transmission element 56 is controlled or activated by the evaluation unit 44 for heating the heating element 20.
  • the heating element 20 of the pin 14 is inductively heated by means of the transmission unit 30, in particular the transmission element 56, of the base station 16.
  • the temperature of the heating element 20 is detected by means of the sensor unit 40, in particular essentially continuously or periodically.
  • a performance of the transmission element 56 is monitored by means of the evaluation unit 44 .
  • a heating process of pin 14, in particular of heating element 20, is stopped or interrupted by transmission unit 30 using evaluation unit 44 if the detected temperature of heating element 20 reaches or exceeds a predetermined limit value for the temperature of heating element 20. exceeds. It is also conceivable for the heating process of the pin 14 to be stopped or interrupted by the transmission unit 30 by means of the evaluation unit 44 if the output of the transmission element 56 falls below or exceeds the specified limit value range, if the detection unit 42 indicates a removal of the pin 14, in particular of the sensor element 46 or the heating element 20, is detected or the like.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

L'invention concerne un dispositif de stylo chauffant, en particulier pour un système de colle chaude, comprenant un stylo pouvant être chauffé, en particulier par induction, (14) pour déverser un milieu, en particulier de la colle. Le stylo (14) comporte un élément chauffant (20), comprenant une station de base (16) présentant une région de réception (22) destinée à recevoir le stylo (14) et une unité de transfert (30) pour chauffer, en particulier par induction, l'élément chauffant (20), la station de base (16) étant prévue pour recevoir le stylo (14) dans la région de réception (22) pour chauffer, en particulier par induction, l'élément chauffant (20) du stylo (14) au moyen de l'unité de transfert (30), comprenant une unité capteur (40) pour détecter une température de l'élément chauffant (20) et comprenant une unité de détection (42) pour identifier des objets, en particulier le stylo (14) et/ou des corps étrangers, dans la région de réception (22). Selon l'invention, l'unité capteur (40) comprend un élément capteur (46), qui est formé en tant que partie du stylo (14), l'élément capteur (46) étant disposé à distance de l'élément chauffant (20) le long d'une direction d'insertion (32) pour recevoir le stylo (14) dans la station de base (16).
PCT/EP2022/079733 2021-11-22 2022-10-25 Dispositif de stylo chauffant, système de colle chaude doté du dispositif de stylo chauffant et procédé de chauffage d'un stylo pouvant être chauffé d'un dispositif de stylo chauffant WO2023088644A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP22821852.5A EP4436721A1 (fr) 2021-11-22 2022-10-25 Dispositif de stylo chauffant, système de colle chaude doté du dispositif de stylo chauffant et procédé de chauffage d'un stylo pouvant être chauffé d'un dispositif de stylo chauffant
CN202280077147.3A CN118284474A (zh) 2021-11-22 2022-10-25 加热笔装置、具有加热笔装置的热胶系统和用于对加热笔装置的能加热的笔进行加热的方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021213122.0A DE102021213122A1 (de) 2021-11-22 2021-11-22 Heizstiftvorrichtung, Heißklebesystem mit der Heizstiftvorrichtung und Verfahren zu einem Heizen eines beheizbaren Stifts einer Heizstiftvorrichtung
DE102021213122.0 2021-11-22

Publications (1)

Publication Number Publication Date
WO2023088644A1 true WO2023088644A1 (fr) 2023-05-25

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PCT/EP2022/079733 WO2023088644A1 (fr) 2021-11-22 2022-10-25 Dispositif de stylo chauffant, système de colle chaude doté du dispositif de stylo chauffant et procédé de chauffage d'un stylo pouvant être chauffé d'un dispositif de stylo chauffant

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EP (1) EP4436721A1 (fr)
CN (1) CN118284474A (fr)
DE (1) DE102021213122A1 (fr)
WO (1) WO2023088644A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3034248A2 (fr) * 2014-12-17 2016-06-22 Vorwerk & Co. Interholding GmbH Récipient comprenant un pistolet de colle chaude à accumulateur et pistolet de colle chaud à préchauffage
JP2017119229A (ja) * 2015-12-28 2017-07-06 極東産機株式会社 接着剤吐出装置
DE102017212528A1 (de) * 2017-07-20 2019-01-24 Robert Bosch Gmbh Heißklebevorrichtung mit einem Heißklebestift
DE102019220217A1 (de) * 2019-12-19 2021-06-24 Robert Bosch Gmbh Tragbares Multischmelzgerät und Vorrichtung mit einem tragbaren Multischmelzgerät

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1779467U (de) 1958-10-23 1958-12-18 Franz Wirschitz Nulleiter-verbindungsklemme fuer kabel.
DE102019220199A1 (de) 2019-12-19 2021-06-24 Robert Bosch Gesellschaft mit beschränkter Haftung Vorrichtung zum Versorgen eines mobilen Multischmelzgerätes mit Heizleistung und/oder zur Temperaturmessung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3034248A2 (fr) * 2014-12-17 2016-06-22 Vorwerk & Co. Interholding GmbH Récipient comprenant un pistolet de colle chaude à accumulateur et pistolet de colle chaud à préchauffage
JP2017119229A (ja) * 2015-12-28 2017-07-06 極東産機株式会社 接着剤吐出装置
DE102017212528A1 (de) * 2017-07-20 2019-01-24 Robert Bosch Gmbh Heißklebevorrichtung mit einem Heißklebestift
DE102019220217A1 (de) * 2019-12-19 2021-06-24 Robert Bosch Gmbh Tragbares Multischmelzgerät und Vorrichtung mit einem tragbaren Multischmelzgerät

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EP4436721A1 (fr) 2024-10-02
CN118284474A (zh) 2024-07-02
DE102021213122A1 (de) 2023-05-25

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