EP3166764A1 - Dispositif de chauffage d'une couche fonctionnelle - Google Patents

Dispositif de chauffage d'une couche fonctionnelle

Info

Publication number
EP3166764A1
EP3166764A1 EP15730728.1A EP15730728A EP3166764A1 EP 3166764 A1 EP3166764 A1 EP 3166764A1 EP 15730728 A EP15730728 A EP 15730728A EP 3166764 A1 EP3166764 A1 EP 3166764A1
Authority
EP
European Patent Office
Prior art keywords
applicator
microwave
segments
coating material
channel
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.)
Pending
Application number
EP15730728.1A
Other languages
German (de)
English (en)
Inventor
Domingo Rohde
José Manuel Catalá-Civera
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.)
Homag GmbH
Original Assignee
Homag 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 Homag GmbH filed Critical Homag GmbH
Publication of EP3166764A1 publication Critical patent/EP3166764A1/fr
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
    • B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
    • B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
    • B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
    • B05B17/0615—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers spray being produced at the free surface of the liquid or other fluent material in a container and subjected to the vibrations
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/70—Feed lines
    • H05B6/701—Feed lines using microwave applicators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
    • B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
    • B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
    • B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
    • B05B17/0653—Details
    • B05B17/0676—Feeding means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D5/00—Other working of veneer or plywood specially adapted to veneer or plywood
    • B27D5/003—Other working of veneer or plywood specially adapted to veneer or plywood securing a veneer strip to a panel edge
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/70—Feed lines
    • H05B6/702—Feed lines using coaxial cables
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/70—Feed lines
    • H05B6/707—Feed lines using waveguides
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/76—Prevention of microwave leakage, e.g. door sealings
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/78—Arrangements for continuous movement of material
    • H05B6/788—Arrangements for continuous movement of material wherein an elongated material is moved by applying a mechanical tension to it

Definitions

  • the invention relates to a device for heating a functional layer of a coating material, such as a surface coating or an edge strip, in particular for applying the coating material to a surface of a workpiece.
  • a coating material such as a surface coating or an edge strip
  • the coatings are laminar coatings for coating at least one flat broad side of the workpiece or so-called edge strips for coating at least one narrow side of the workpiece.
  • the coatings consists of a surface layer and a functional layer, wherein the functional layer for Connecting the coating with the workpiece is used. This is the
  • the activation of the functional layer by means of laser beams or by means of hot compressed air is known.
  • the activation by means of laser beams has its advantages in the pinpoint application of the laser beam for precisely controlled activation.
  • the device for activation by means of laser beams has the disadvantage that the application shows its advantages rather only at high quantities. It is also disadvantageous that the energy applied by the laser acts only on the surface or in a predefined, small penetration depth of only about 1 ⁇ m and 100 ⁇ m and then has to be passed on by heat conduction to the depth of the functional layer in order to ensure uniform heating or activation to reach the functional layer.
  • Activation via hot compressed air is also known in the art.
  • DE 10 201 1015898 discloses a device for generating hot compressed air, which is flowed on an edge band to heat the functional layer and thus to activate. In doing so, a significant amount of compressed air will have to be heated to high temperatures in order to heat or activate the functional layer as it passes through the device.
  • Such devices consume significant amounts of energy to heat the required high amounts of air to over 400 ° C, with a large part of the energy due to the design of the device in the heat exchanger via, for example, heat radiation or the like is dissipated parasitic. Also causes the high volume hot air flow that the environment of the device is exposed to high temperatures, which entails a considerable amount of air conditioning.
  • the hot air activation devices exhibit a high level of noise in the generation and outflow of pressurized hot air, which is responsible for the Operating personnel of the device is disadvantageous and a considerable effort for noise reduction entails.
  • hot air shows that due to the high H coordinatorlutttemperaturen the upper layer of the functional layer at temperature of the hot air from 400 ° C to 500 ° C is strongly liquefied and is partially replaced by the strong air flow from the functional layer. These detached parts of the functional layer are found as soiling on the surrounding components and reduce the amount of adhesive available for bonding.
  • the energy applied by the hot air acts only on the surface and then has to be conducted by heat conduction into the depth of the functional layer in order to achieve a continuous heating of the functional layer to a temperature of substantially the process temperature or more. This results in a strong temperature gradient between the surface of the functional layer and the back of the functional layer, which adjoins the decorative layer of the coating material.
  • ADVANTAGES It is the object of the invention to provide a device for heating a functional layer of a coating material, such as in particular ahenbesch or an edge band, in particular for applying the coating material to a surface of a workpiece, which is simple and straightforward and compact and in terms the energy-efficient is favorable and is operable so that the functional layer of the coating material can be specifically heated.
  • An embodiment of the invention relates to a device for heating a functional layer of a coating material, such as a Surface coating or an edge band, in particular for applying the coating material to a surface of a workpiece, with a microwave source, an applicator and a microwave channel for supplying the microwave radiation generated in the microwave source to the applicator, wherein in the applicator a microwave field is generated due to the supplied microwave radiation, wherein the applicator has at least one material channel which traverses the applicator and through which the coating material can be carried out, so that the functional layer of the coating material can be heated in the microwave field within the applicator.
  • a device for heating a functional layer of a coating material such as a Surface coating or an edge band
  • the microwave energy By the application of the microwave energy to the Be Bertungsmateriai uniform heating is achieved even in deeper layers, because the Be Bertungsmateriai is introduced into the applicator in the microwave field. As a result, a uniform heating is achieved quickly, the energy is provided very focused, which minimizes the total energy consumption. This leads to a well adjustable and metered energy application, which means that the temperature of the functional layer is very precisely and easily adjustable.
  • the device can be used both in a continuous system for the production and processing of workpieces as well as in a machining center as a stationary system.
  • a plurality of applicators is provided. As a result, if necessary, several coating materials can be heated simultaneously, which can be applied in parallel to the same workpiece or to different workpieces. Alternatively, a single coating material could also be heated differently at different points by means of a plurality of applicators, so that a specific adhesion to different substrate conditions can take place. It is also advantageous if at least one applicator or all applicators has an applicator segment or a plurality of applicator segments. As a result, the applicator can be subdivided into different regions or segments into which the microwave field could be set differently. This would allow a specific adaptation of the amount of heat input to the specific needs of the bond.
  • an applicator or an applicator segment has a material channel or a plurality of material channels. Thereby, one or more coating materials can be heated simultaneously. In the case of particularly wide or areal coating materials, it is also possible to use a plurality of applicators in order to heat adjacent areas of a coating material.
  • an aperture for the microwave radiation is provided on at least one applicator and / or on at least one applicator segment.
  • a modulation device for adjusting the modulation of the microwave radiation is provided in at least one applicator and / or in at least one applicator segment.
  • the resonant frequency of the applicator can be adapted as a resonator to the resonant frequency of the microwave source, such as the magnetron.
  • the coating material to be heated which is guided through the applicator, alters the microwave field or the resonance frequency of the applicator, so that the modulation device adjusts the microwave field that builds up so that the coating material can be optimally heated.
  • the at least one applicator or a group of applicators is supplied with microwave radiation by a microwave source or by a plurality of microwave sources, wherein in particular each applicator or each group of applicators is fed by its own microwave source.
  • the at least one applicator segment or a group of applicator segments is supplied with microwave radiation by a microwave source or by a plurality of microwave sources, wherein in particular each applicator segment or group of applicator segments is fed by its own microwave source.
  • a microwave source or by a plurality of microwave sources wherein in particular each applicator segment or group of applicator segments is fed by its own microwave source.
  • a plurality of applicators or a plurality of applicator segments is fed by a microwave source, wherein an allocation device is provided for dividing the microwave radiation and / or the microwave energy into the respective applicators or applicator segments.
  • the dividing device divides the microwave radiation, in particular with regard to the power, to the respective applicators or to the respective applicator segments, so that a specific application of the microwave energy can take place.
  • at least one microwave channel is provided, in particular one microwave channel per microwave source and / or one microwave channel per applicator and / or one microwave channel per applicator segment is provided.
  • the microwave channel serves to forward the microwave radiation to the respective applicators or applicator segments involved, so that a targeted heating of the coating material can take place. It is particularly advantageous if the microwave channel is a waveguide and / or a coaxial cable. If a plurality of applicator segments or applicators are provided, it may be advantageous if the waveguide is subdivided into segments and thus the microwave radiation can be forwarded. Also, the power line of the microwave energy from the microwave source to the applicator can be made by means of coaxial cables. This is done with adapted transitions, also referred to as tapered coaxial transitions. This has the advantage that the applicator can be easily disassembled so that maintenance work on the applicator can be simplified.
  • the material channel runs through the at least one applicator and / or through the at least one applicator segment, wherein the channel has an inlet opening and an outlet opening, which serve to admit the coating material into the material channel and to let it out again.
  • the positioning in the microwave field of the applicator or the applicator segment is defined, which provides a more defined energy input. Also can be done through the material channel a separation, so that the coating material does not get directly into the applicator, because any contamination from the applicator are only badly removable bar.
  • the material channel has a circumferential wall which separates the material channel from the interior of the applicator or from the interior of the applicator segment. This allows a complete separation, which protects the applicator. This also defines the path of the coating material through the applicator, which is conducive to the defined energy input. It is particularly advantageous if at the inlet opening and / or at the outlet opening, a device is arranged, which reduces or prevents leakage of microwave radiation from the inlet opening or from the outlet opening. As a result, the emerging microwave radiation can be prevented or at least reduced below the permissible limit values.
  • the diaphragm is arranged between the microwave source and the applicator or the applicator segment.
  • the adjustment of the modulation of the microwave radiation in particular for the generation of a stationary and / or traveling wave of the microwave radiation, can be carried out in the applicator or in the applicator segment.
  • the shape of the resonance curve of the applicator is variable.
  • the characteristic of the applicator shifts from a resonant device to a device with a running shaft, depending on the choice of the aperture.
  • the absorptive influences by the coating material on the microwave field can be compensated or compensated.
  • the diaphragm is an opening, in particular an opening in a metal wall.
  • the metal wall can shield the microwave radiation, so that only the microwave radiation passing through the opening is forwarded to the applicators or applicator segments.
  • the opening cross-section of the opening of the aperture is variably adjustable is particularly advantageous. As a result, the modulation of the microwave radiation can be adjusted as needed.
  • the diaphragm has a metal element, which is projecting into the opening.
  • the effect of the aperture can still be adjusted without adjusting the opening.
  • the metal element is adjustable so that the penetration depth of the metal element is adjustable in the opening.
  • the metal element is a metal bolt or another metal element. This or this can influence the microwave radiation particularly well.
  • the at least one material channel is arranged fixedly in the applicator or in the applicator segment and the microwave field is variably adjustable in the applicator and / or in the applicator segments so the microwave field can be adapted to the material properties of the coating material or to the size ratios of the coating material be set.
  • the at least one material channel is displaceably adjustable in the applicator or in the applicator segment. Even so, an adaptation to the coating material to be heated can be made.
  • the material channel and / or the microwave field is adjustable such that a functional layer of the coating material can be arranged or carried out in a range of maximum electric field strength.
  • an applicator is subdivided into a plurality of applicator segments, wherein the applicator segments have substantially the same geometric dimensions.
  • an individual microwave energy can be controlled in the applicator segments, which can meet the needs of the coating material, if it requires a different heating, for example, over the height.
  • an applicator is subdivided into a plurality of applicator segments, with at least some of the applicator segments differing in height or in width. This too may be advantageous when using different height coating materials, such as variable height edgebands.
  • the applicator or the applicators or the applicator segment or the applicator segments are exchangeable.
  • the respective preferred applicator or the applicators or the applicator segments can be used, which are preferably suitable for the coating material to be heated.
  • the material channel consists of a material which is one of the following materials or has one of the materials: PTFE, ceramic, glass, technical glass and / or quartz glass. As a result, a passivation of the surface can be achieved.
  • the material channel is coated on the inside with a material which is one of the following materials or has one of the materials: PTFE, ceramic, glass, technical glass, and / or quartz glass.
  • the applicator or the applicators or the applicator segment or the applicator segments can be coated internally with a material which is one of the following materials or has one of the following materials: PTFE, ceramic, glass, technical glass, and / or quartz glass.
  • a modulation device is arranged, which adapts in particular the resonant frequency of the filled resonator to the frequency of the magnetron.
  • the modulation device influences the microwave field in such a way that, depending on the selected coating material, it is arranged in the region of a maximum of the field strength.
  • a temperature measuring device which allows the monitoring of the temperature of the coating material in the material channel and / or at the entrance and / or at the outlet of the material channel.
  • the temperature of the coating material can be determined, so that the energy to be expended, the microwave field and its distribution can be adjusted according to the target temperatures.
  • a flushing device which allows an introduction or passage of a fluid, in particular a gas or air, into the material channel. Thereby, a targeted cooling of the coating material can be made on the surface side, while the side of the functional layer can be rinsed.
  • a guide device which allows guidance of the coating material in the material channel.
  • the coating material can be guided in a targeted and secure manner through the microwave field.
  • FIG. 2 is a side view of an applicator
  • Fig. 3 is a top view of an applicator
  • 5 is a front view of an applicator
  • FIG. 7 is a view of an applicator from above
  • Fig. 8 is a view of an applicator from behind
  • 1 1 is a side view of an applicator
  • Fig. 12 is a side view of an applicator
  • Fig. 13 is a top view of an applicator.
  • FIG. 1 shows a schematic representation of a device 1 according to the invention for heating a functional layer 2 of a coating material 3.
  • heating of a functional layer is also understood as activation of a functional layer. These terms are used below as equivalent or equivalent.
  • FIG. 1 shows the functional layer on one side of the coating material, but it may as well also be arranged on the other side of the coating material.
  • the coating material is in particular an edge band, which can be applied to a workpiece on a narrow side, or in particular a rather flat coating material, which can also be applied to a rather flat broad side of a workpiece.
  • the heating or activation of the functional layer 2 serves for the application and in particular the permanent fixing of the coating material 3 on a surface of the workpiece.
  • the functional layer is activated such that it forms or causes a type of adhesive by means of which the coating material can be bonded to the surface of the workpiece.
  • the device 1 has a microwave source 4 and an applicator 5, wherein the microwave radiation is transmitted by means of a microwave channel 6 from the microwave source 4 to the applicator 5.
  • the microwave channel 6, which is preferably designed as a waveguide or as a coaxial cable, is used to supply the microwave radiation generated in the microwave source 4 to the applicator 5.
  • a microwave field is thereby generated, which is traversed by the coating material 3.
  • the applicator 5 has at least one material channel 7, which traverses the microwave field, and through which the coating material is guided.
  • the microwave field is designed or controllable such that when passing through the coating material through the microwave field, the functional layer of the coating material is heated or activated.
  • the coating material consists of at least two layers, of which one layer is the functional layer, which is heated or activated, wherein the at least one other layer, which is referred to below as a decorative layer, is not or not so strongly heated.
  • the functional layer and the decorative layer can each also consist of a corresponding own layer structure of several individual layers.
  • the functional layer and / or the decorative layer of the coating material may consist of at least one layer or of a plurality of layers.
  • the functional layer and the decorative layer each have a loss factor e "eff, which is regarded as loss factor of the respective material of the functional layer and the decorative layer, where the loss factor is the imaginary part of the complex relative dielectric constant of the respective material.
  • the loss factor t " e n (FS) of the functional layer or the loss factor e" eff (DS) of the decorative layer for frequencies (ISM) at 915 MHz, 2.45 GHz or 5.8 GHz are stated here.
  • the ratio R e " e ff (FS) / ⁇ " ⁇ "(DS) at one of the specified frequencies of 915 MHz, 2.45 GHz or 5.8 GHz defines the ratio of the loss factors.
  • the coating material is specified such that R> 1, preferably R> 10 applies. This causes the function layer FS is warming much more than the decorative layer of the coating material so that there is a selective heating of the coating material "especially when used by Mikroweilenapplikatoren at the ISM frequencies of 915MHz or 2.45GHz or 5.8GHz ,
  • the applicator from the microwave source with microwave radiation of a power of 0.1 kW to about 50kW is applied.
  • the heating of the functional layer is greater than the heating of the decorative layer, so that the decorative layer is not or possibly only slightly heated, while the functional layer is heated to process temperature.
  • FIGS. 2 to 5 each show different views of an applicator 10 according to the invention in a first operating position.
  • FIG. 2 shows the applicator in a side view
  • FIG. 3 in a plan view from above
  • FIG. 4 in a rear view
  • FIG. 5 in a front view.
  • the applicator 10 has three applicator segments 1 1, 12, 13, which are arranged one above the other.
  • the applicator segments 1 1, 12, 13 are cavities into which the microwave radiation is fed on the input side and which open into a chamber 14 in which the material channel 15 is provided, which forms a channel in order to be able to guide the coating material through the chamber 14 ,
  • a running or a standing wave of microwave radiation is formed and can heat or activate this in the implementation of the coating material 16 depending on the loss factor.
  • the applicator segments 1 1, 12, 13 are arranged one above the other and stepped at the rear end, so that the connection of a microwave channel 1 7, 18, 19 on an upper side of the respective applicator segment 1 1, 12, 13 is possible.
  • the microwave channel 1 7, 18, 19 is preferably a waveguide and / or a coaxial cable. It may be advantageous if a waveguide is used, that the waveguide is divided into segments. Laterally of the material channel 1 5 this is provided on both sides with a device 20 as a throttle which attenuates the leakage of the microwave radiation or completely shields.
  • the material channel 1 5 is designed such that it passes through the at least one applicator 10 and / or through the at least one applicator segment 1 1, 12, 13, wherein the material channel 1 5 an inlet opening 21 and an outlet opening 22 which serve , the coating material 18 in the material channel 1 fifth let in and let it out again.
  • the Matertalkanal 15 has for this purpose a circumferential wall 23, which separates the material channel 15 from the interior 14 of the applicator 10 or from the interior of the respective applicator segment 1 1, 12, 13
  • FIGS. 2 to 5 show an applicator 10 with three applicator segments
  • applicators or one or more applicators may be provided with one or more applicator segments. It may be advantageous if at least one applicator 10 or all applicators an applicator segment 1 1, 12, 13 or a plurality of applicator segments 1 1, 12, 13 have.
  • the microwave radiation can be distributed to the respective applicators or to the respective applicator segments, so that the heating of the coating material in the material channel can be adapted to the needs.
  • the distribution of the microwave radiation can be variable, for example, via the height of the coating material.
  • the upper and / or lower edge of the coating material may be heated to a greater or lesser extent than a middle region.
  • the figures show an applicator with a material channel leading through the applicator through which the coating material is passed.
  • the at least one applicator also a plurality of material channels, which can be arranged one behind the other and / or one above the other.
  • several strips, strips or webs of coating material can be heated at the same time. This may be advantageous in a device in which several such heated coating materials are processed simultaneously.
  • several workpieces can be coated at the same time or it can be a workpiece coated on several sides.
  • an aperture 24 is provided in each case in the applicator or in the applicator segments 11, 12, 13.
  • This aperture serves to adjust the shape of the resonance curve of the applicator or of the applicator segment. As the aperture 24 is made larger, the characteristic of the applicator or applicator segment shifts from a standing wave resonant system to a traveling wave system.
  • the diaphragm 24 preferably consists of a type of pinhole 25, which is variable in its passage cross-section and / or of a variable metal element 26, such as a metallic mandrel, which serves to selectively influence the microwave radiation.
  • Both the pinhole 25 and the metal element 26 is / are preferably designed to be adjustable in order to be able to set the characteristics of the applicator 10 or of the applicator segment 11, 12, 13 to the respective requirements.
  • the diaphragm 24 is arranged between the microwave source and the applicator or the applicator segment or in the applicator or in the applicator segment. It is preferably connected upstream of the modulation device 27. Alternatively, however, it could also be arranged downstream of the modulation device.
  • the aperture 24 as a perforated panel 25 in this case has an opening 28, in particular an opening 28 in a metal wall 29.
  • the opening cross section of the opening 28 of the aperture is variably adjustable.
  • the metal element acting as a diaphragm 26, which projects into the opening of the applicator segment, is preferably adjustable.
  • the metal element 26 is preferably arranged downstream of the pinhole 25. Alternatively, however, it could also be the pinhole 25 upstream. In this case, a metal element could be provided or it may alternatively be provided a plurality of metal elements. This or these can be arranged inside and / or outside of the applicator. According to the invention, the metal element is a metal bolt which projects into the applicator segment.
  • a modulation device 27 for adjusting the modulation of the microwave radiation is provided in at least one applicator 10 and / or in at least one applicator segment 11, 12, 13.
  • the modulation device 27 is designed as a type of flap which influences the microwave radiation in such a way that it adapts the resonant frequency of the resonator of the applicator or of the applicator segment 11, 12, 13 to the resonant frequency of the magnetron, ie the microwave source.
  • the modulation device 27 is formed as a kind of flap. This modulation device 27 is set downward in FIGS. 2 and 3. In FIGS. 6 and 7, the modulation device 27 is set turned upwards.
  • the at least one material channel 1 5 is arranged fixedly in the applicator 10 or alternatively also in the applicator segment, wherein the microwave field is variably adjustable in the applicator 1 and / or in the applicator segment
  • the at least one material channel 15 in the applicator 10 or in the applicator segment may also be displaceably adjustable in order to be able to set the coating material in the microwave field.
  • the material channel and / or the microwave field can be adjusted such that a functional layer of the coating material can be arranged in a region of maximum electric field strength or can be carried out in this region.
  • the coating material is guided by a drive through the material channel.
  • the drive can be attached to the applicator or assigned to this.
  • the drive can also be a drive of a device which applies the coating material to the workpiece.
  • the drive may be part of an edge banding device if the coating material is for example an edge that can be applied to the narrow side of a workpiece.
  • a pressure device can also be arranged downstream of the applicator in order to apply the coating material to the workpiece and press it there.
  • the applicator segments 1 1, 12, 1 3 are formed the same height.
  • an applicator 10 can also be subdivided into a plurality of applicator segments 11, 12, 13, wherein the applicator segments 11, 12, 13 can also have different geometric dimensions or heights.
  • an applicator can be subdivided into a plurality of applicator segments, wherein at least some of the applicator segments can differ in height and / or width.
  • the energy input into the coating material can be modulated as a function of the height or width.
  • the material channel 15 is formed as a continuous gap with a circumferential wall 23.
  • the material channel 15 is made of a material which is at least one of the following materials or has one of the materials: PTFE, ceramic, glass, technical glass, and / or quartz glass.
  • the material channel 15 may for example be made of PTFE, such as Teflon, and be used as a PTFE block in the applicator 10.
  • the Materialkana! 15 be coated internally with a material which is one of the following materials or has one of the materials: PTFE, ceramic, glass, technical glass and / or quartz glass.
  • the applicator 10 or the applicators or applicator segment or segments 1 1, 12, 13 may be internally coated or filled with a material which is one of the following materials or has one of the following materials: PTFE, ceramic, glass, engineering glass, and / or quartz glass.
  • Figures 6 and 9 show a guide device 30 in the material gap 1 5, which are formed as guide rails and are arranged below and above in the material gap 1 5.
  • the guide rails pass through the material gap 15, so that the coating material is guided on its way through the material gap.
  • the two guide rails or in general the guide device 30 can be adjusted to the height or width of the coating material, so that also different high or wide coating materials, such as bands can be guided through the material gap.
  • the guide device serves to guide the Coating material and has the further advantage that in the area in which the coating material engages in the guide device, the heating is not so high as in a central region, Thus it is achieved that the edge region of the coating material can bond the functional layer more.
  • the range is about 0.5 to 4 mm wide, in which engages the coating material in the guide device.
  • the guide device can also be resiliently mounted, in particular the guide rails, in order to avoid jamming of the coating material.
  • the guiding device such as the upper and / or lower guide rails, may be connected to a flushing device and provided with channels to be flushed with a flushing medium, such as air.
  • a flushing medium such as air.
  • the flushing medium can be applied to the coating material in the lateral direction and / or directly from above or below in order to avoid overheating in the guide rail.
  • the guide rails preferably in the lower surface and / or in the upper surface and in the lateral surfaces channels, through which the flushing medium can be passed.
  • FIGS. 10 and 11 show an applicator 10 with a material gap 15 with a flushing device 40.
  • the flushing device 40 comprises a first flushing medium connection 41 and with a second flushing medium connection 42, the first flushing medium connection 41 and the second flushing medium connection serving to connect a flushing medium.
  • This flushing medium such as air, is passed from the flushing medium connections 41, 42 into channels 43 which spread and open in the mate ri alkanal 15 to the material channel 15 and the coating material 16 in Rinse material channel 15.
  • the flushing device is an optional feature that can be used with the features of the other embodiments.
  • FIGS. 12 and 13 show an end region of the applicator 10 in which a filling 50 is provided in order to influence the dielectric properties of the resonator 51.
  • a filling 50 is provided in order to influence the dielectric properties of the resonator 51.
  • the resonator 51 and the applicator 10 as a whole can be made smaller, since the filling changes the microwave field such that a smaller overall length is sufficient given a suitable filling 50.
  • the filling is an optional feature that can be used with the features of the other embodiments.
  • a temperature measuring device 60 is provided which allows the monitoring of the temperature of the coating material 16 in the material channel 1 5 and / or at the entrance and / or at the output of the material channel 1 5.
  • a feedback for controlling the microwave energy and / or the resonance frequency of the applicator or the shape of the microwave field can take place.
  • a plurality of temperature sensors can be arranged, which detect the temperature of the coating material.
  • the number of temperature sensors can be 1 to 20 or more. It is particularly advantageous if a continuous measurement of the temperature of the functional layer of the coating material is made.
  • a control or a regulation of the temperature of the functional layer can be made as a function of the output power of the microwave source.
  • the desired value of the temperature of the functional layer can be kept constant over the length of the edge band.
  • the desired value of the temperature of the coating material can be varied » with the variation according to a user-specific profile can be made.
  • the device according to the invention serves to heat or activate a coating material.
  • the heating process can be combined by means of the microwave applicator with other heating devices or heating methods.
  • these further heating devices can be used for preheating and / or for achieving or for holding the process temperature of the functional layer.
  • the temperature profile of the coating material to be achieved in the process direction and perpendicular to the process direction can be achieved by the combination of the heating profiles of the individual heating devices.
  • the heating device is arranged in front of the microwave heating device in relation to the feed direction of the coating material.
  • the following heating devices are suitable: direct heating of the functional layer via mechanical contact with heated mechanical components, hot air, 1R, VIS or UV lamps, LED or laser devices or ultrasound.
  • the additional heating device is arranged relative to the feed direction of the coating material after the microwave heating device.
  • the following energy sources are advantageous: hot air, IR, VIS, or UV lamps, LED or laser devices or ultrasound.
  • the applicators shown can be used individually or in groups. Also, the applicators may have individual applicator segments or groups thereof. In this case, the applicator segments of an applicator can differ in height in order to achieve optimal heating of different high coating materials, for example as tapes.
  • the number of applicators is preferably between 1 and 20 or more.
  • the number of applicator segments is preferably between 1 and 20 or more.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Constitution Of High-Frequency Heating (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Coating Apparatus (AREA)

Abstract

L'invention concerne un dispositif de chauffage d'une couche fonctionnelle d'un matériau de revêtement, tel qu'un revêtement de surface ou une alaise de chant, servant en particulier à appliquer le matériau de revêtement sur la surface d'une pièce. Ledit dispositif comprend une source de micro-ondes, un applicateur et un canal à micro-ondes servant à amener le rayonnement micro-onde produit dans la source de micro-ondes à l'applicateur. Un champ de micro-ondes peut être produit dans l'applicateur sous l'action du rayonnement micro-onde amené, l'applicateur comprenant au moins un canal à matériau, lequel traverse l'applicateur et à travers lequel le matériau de revêtement peut être guidé, de sorte que la couche fonctionnelle du matériau de revêtement est réchauffée dans le champ de micro-ondes à l'intérieur de l'applicateur.
EP15730728.1A 2014-07-11 2015-06-12 Dispositif de chauffage d'une couche fonctionnelle Pending EP3166764A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014213526.5A DE102014213526A1 (de) 2014-07-11 2014-07-11 Vorrichtung zur Erwärmung einer Funktionsschicht
PCT/EP2015/063171 WO2016005145A1 (fr) 2014-07-11 2015-06-12 Dispositif de chauffage d'une couche fonctionnelle

Publications (1)

Publication Number Publication Date
EP3166764A1 true EP3166764A1 (fr) 2017-05-17

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EP15730728.1A Pending EP3166764A1 (fr) 2014-07-11 2015-06-12 Dispositif de chauffage d'une couche fonctionnelle

Country Status (6)

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US (1) US20170181231A1 (fr)
EP (1) EP3166764A1 (fr)
CN (1) CN106470767B (fr)
BR (1) BR112016029049A2 (fr)
DE (1) DE102014213526A1 (fr)
WO (1) WO2016005145A1 (fr)

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DE102015000043A1 (de) * 2015-01-09 2016-07-14 Ima Klessmann Gmbh Holzbearbeitungssysteme Verfahren zur Bearbeitung von Werkstücken, insbesondere Kantenbändern, und Vorrichtung zur Durchführung des Verfahrens
DE102016221538A1 (de) * 2016-11-03 2018-05-03 Homag Gmbh Vorrichtung zur Erwärmung einer Funktionsschicht
DE102016224217A1 (de) 2016-12-06 2018-06-07 Homag Gmbh Vorrichtung und Verfahren zum Beschichten eines Werkstücks
DE102017205208A1 (de) 2017-03-28 2018-10-04 Homag Gmbh Vorrichtung und Verfahren zum Beschichten eines Werkstücks
DE102017210261A1 (de) * 2017-06-20 2018-12-20 Homag Gmbh Verfahren und Vorrichtung zum thermischen Aktivieren einer Funktionsschicht eines Beschichtungsmaterials
DE102017114970A1 (de) 2017-07-05 2019-01-10 Homag Gmbh Vorrichtung und Verfahren zum Veredeln von Werkstücken
DE102017122249A1 (de) * 2017-09-26 2019-03-28 Homag Gmbh Applikator zum thermischen Aktivieren einer Funktionsschicht eines Beschichtungsmaterials
DE102018201088A1 (de) * 2018-01-24 2019-07-25 Homag Gmbh Applikator zum Aktivieren einer Funktionsschicht eines Beschichtungsmaterials
DE102019109128A1 (de) * 2019-04-08 2020-10-08 Homag Gmbh Vorrichtung und Verfahren zum Beschichten von Werkstücken
DE102019113794A1 (de) * 2019-05-23 2020-11-26 Homag Gmbh Vorrichtung und Verfahren zum Beschichten von Werkstücken

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Also Published As

Publication number Publication date
BR112016029049A2 (pt) 2017-08-22
US20170181231A1 (en) 2017-06-22
DE102014213526A1 (de) 2016-01-14
CN106470767B (zh) 2021-03-16
CN106470767A (zh) 2017-03-01
WO2016005145A1 (fr) 2016-01-14

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