CN114559504A - Device and method for coating workpieces - Google Patents
Device and method for coating workpieces Download PDFInfo
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- CN114559504A CN114559504A CN202111422880.8A CN202111422880A CN114559504A CN 114559504 A CN114559504 A CN 114559504A CN 202111422880 A CN202111422880 A CN 202111422880A CN 114559504 A CN114559504 A CN 114559504A
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- 238000000576 coating method Methods 0.000 title claims abstract description 122
- 239000011248 coating agent Substances 0.000 title claims abstract description 117
- 238000000034 method Methods 0.000 title claims description 7
- 239000012530 fluid Substances 0.000 claims abstract description 171
- 239000000463 material Substances 0.000 claims abstract description 92
- 230000004913 activation Effects 0.000 claims abstract description 46
- 239000002346 layers by function Substances 0.000 claims abstract description 24
- 238000003825 pressing Methods 0.000 claims abstract description 22
- 230000003213 activating effect Effects 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 230000033001 locomotion Effects 0.000 claims abstract description 7
- 239000004033 plastic Substances 0.000 claims abstract description 7
- 229920003023 plastic Polymers 0.000 claims abstract description 7
- 239000002023 wood Substances 0.000 claims abstract description 7
- -1 artificial board Substances 0.000 claims abstract description 5
- 239000002245 particle Substances 0.000 claims description 6
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 3
- 238000002604 ultrasonography Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims 14
- 238000005056 compaction Methods 0.000 claims 1
- 238000005253 cladding Methods 0.000 abstract 1
- 238000001994 activation Methods 0.000 description 43
- 230000008901 benefit Effects 0.000 description 11
- 238000009434 installation Methods 0.000 description 11
- 230000001070 adhesive effect Effects 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 239000007767 bonding agent Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000004831 Hot glue Substances 0.000 description 2
- 238000009435 building construction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 150000001875 compounds Chemical group 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Coating Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
An apparatus for cladding a workpiece, preferably at least partly of wood, artificial board, plastic or the like, comprising: a pressing device for pressing the coating material onto the surface to be coated of the workpiece; a conveying device for causing relative movement between the workpiece and the pressing device; activation device for activating a workpiece, and/or a coating material, and/or a functional layer, characterized in that the activation device has a fluid energy machine for generating a fluid flow, which preferably operates in a pressure range of 0 bar to 10 bar, more preferably in a pressure range of 2 bar to 6 bar; a temperature control device for heating a fluid flow, which is mechanically coupled to the fluid energy such that a fluid, in particular air, can be supplied at the fluid inlet and a heated fluid flow can be discharged at the fluid outlet, which can be directed onto the workpiece to be activated and/or onto the workpiece coating material.
Description
Technical Field
The invention relates to a device and a method for coating workpieces, preferably at least sections of wood, wood-based panels, plastic, etc.
Background
For example, in the furniture and building construction industry, workpieces are often provided with a coating material, such as an edge, on one of their surfaces. The coating material is usually applied by means of a suitable adhesive or bonding agent, which is applied to the workpiece or the coating material, for example in the form of a hot melt adhesive.
Alternatively, it is also common for the bonding agent or adhesive to be already provided on the coating material or also on the workpiece or to be formed integrally therewith. In this case, the bonding agent is activated or remains activated during the coating process by means of a suitable device.
DE 102017122701 a1 and DE 102019133934.0 disclose devices for coating workpieces, which have an activation device for activating a bonding agent for bonding a coating material to a surface of the workpiece to be coated. In this case, the air flow generated by means of an external compressed air installation is heated in the coating system or in the activation device and used to activate the adhesive.
The user of such a device for coating workpieces is in most cases already provided with an external compressed air installation. However, it has proven to be possible to provide compressed air installations and compressed air networks which only offer inadequate supply safety with regard to the power stability and quality of the compressed air. For example, contaminated air may distort the measurements of the sensor, thereby disturbing the regulation of the air flow. Therefore, it is difficult to regulate the constant amount of energy of the gas flow, and the regulating device may fail completely. If the amount of energy of the gas flow fluctuates in the activation device, this will eventually have a negative effect on the coating result.
Disclosure of Invention
The invention is therefore based on the object of specifying a device and a method for coating workpieces, which ensure a constant activation process of the workpiece and/or of the coating material with constant activation results.
Said object is achieved by the device and the method according to the invention. In the following, advantageous embodiments and improvements of the invention are obtained.
The invention is based in particular on the recognition that a constant activation process with constant activation results of the workpiece and/or of the coating material is ensured only when an air flow is generated and the heating air flow is not disturbed by external influences.
In this context, it is known that external influences can be reduced to a minimum when the air flow is generated and heated directly in the device for coating the workpiece.
By exploiting these insights, the invention proposes an apparatus for coating a workpiece, preferably at least in sections consisting of wood, artificial boards, plastics or the like, comprising: a pressing device for pressing the coating material onto the surface to be coated of the workpiece; a conveying device for causing relative movement between the workpiece and the pressing device; activation means for activating the workpiece, and/or the coating material, and/or the functional layer, characterized in that the activation means have a fluid energy machine for generating a fluid flow, which preferably operates in a pressure range of 0 bar to 10 bar, more preferably in a pressure range of 2 bar to 6 bar; a temperature control device for heating a fluid flow, which is mechanically coupled to the fluid energy such that a fluid, in particular air, can be supplied at the fluid inlet and a heated fluid flow can be discharged at the fluid outlet, which can be directed onto the workpiece to be activated and/or a workpiece coating material.
The invention thus ensures that the fluid flow is generated and heated directly in the activation device and then immediately diverted onto the workpiece to be activated and/or the workpiece coating material to be activated. This has the advantage that the device for coating the workpieces is independent of the external fluid or compressed air system and the corresponding fluid or compressed air network. This provides the operator of the device with greater flexibility in setting up the facility and also makes expensive provisioning of peripheral devices superfluous. This also eliminates additional structural components during installation and allows a space-saving construction.
It is also advantageous that disturbances in the external supply system, for example a complete failure of an external fluid or compressed air installation, have no influence on the operation of the device for coating workpieces. This ultimately improves production safety.
It is also advantageous that the activation device is already fully integrated into the equipment for coating the work piece when it is installed in the factory and makes it possible to dispose of a costly interface to an external system, such as a fluid facility or a pressure air facility at the establishment site.
It is also ensured that the quality and power stability of the generated and heated fluid flow is determined as much as possible by the activation device itself and can be designed individually according to the installation for coating or the coating process. This has the advantage that pressure fluctuations or contaminated fluids or pressure air, which adversely affect, for example, external fluid or pressure air installations, are excluded, which ultimately ensures a constantly high activation result.
After the fluid flow is generated and heated directly in the activation device and impinges directly on the workpiece and/or the coating material to be activated at the fluid outlet, the power losses due to friction and heat dissipation during the transport of the heated fluid or air flow can be kept low and thus cost-effective.
Preferably, the device for coating is designed such that it has a control unit which is designed for open-loop and/or closed-loop control of the temperature control device and/or the fluid energy machine in such a way that the fluid flow impinges on the workpiece to be activated and/or the workpiece coating material and/or the functional layer to be activated and/or transmits a defined amount of energy with definable parameters, in particular volume flow, pressure and/or temperature. This makes it possible to flexibly control the activation process of the workpiece and/or of the coating material and/or of the functional layer and to adapt it to different workpieces or coating materials. This has the advantage that different workpiece materials and coating materials can be activated and processed.
By controlling the volume flow, the pressure and/or the temperature of the fluid flow, external influences can also be compensated and a constant amount of energy can be permanently provided to activate the workpiece and/or the coating material. This ensures a constant activation result.
Furthermore, it is thereby possible to flexibly control the activation device such that it is in operation only when the workpiece and/or the coating material actually has to be activated. In other words, the activation device can be flexibly switched off in idle or when production is suspended. In this way, energy consumption is reduced and costs are saved.
In a further preferred embodiment, the device is designed such that the control unit controls the feed of the workpiece and/or of the coating material such that a defined amount of energy is transmitted to the workpiece and/or to the coating material by the treated fluid flow. This makes it possible to distribute the energy of the fluid flow during activation as required over the workpiece and/or the coating material and/or the functional layer. This has the advantage that the amount of energy required for activation is also only closed-loop controllable and/or open-loop controllable via the feed or this can be achieved in combination with the open-loop control and/or closed-loop control of the temperature control device and/or the fluid energy machine.
It is also preferred for the device to have an electric motor, which is particularly speed-adjustable, which puts the blade system, in particular the twin turbine, into motion to generate the fluid flow. In this way, a fluid flow is generated flexibly, quickly and as required by means of the electric motor. This is advantageous in that only the amount of energy actually required is transferred via the set fluid flow to the workpiece and/or the coating material to be activated.
In a further preferred embodiment, the device is designed such that the temperature control device has an energy source, which is adjustable in particular and which heats the fluid flow by means of a resistance heating cartridge, laser, microwave, infrared, plasma and/or ultrasound. In this way, the amount of energy of the fluid flow is set flexibly, quickly and as required by means of a corresponding temperature control device. This has the advantage that only the amount of energy actually required is transferred via the set fluid flow to the workpiece and/or the coating material to be activated.
Preferably, a collecting device, in particular a funnel-shaped collecting hood, is also arranged in the fluid flow downstream of the fluid outlet, so that the fluid flow of the fluid outlet directed onto the workpiece to be activated and/or the workpiece coating material is located in a collecting region of the collecting device. This ensures that the heated fluid flow does not flow into the environment. The advantage here is that the environment is not heated unnecessarily and the fluid flow is collected or can be diverted after activation for further use.
In a further preferred embodiment, the device is designed such that the treated fluid stream impinges on the workpiece and/or the coating material in the inner region of the collecting device. In this way, portions of the fluid streams are also directed into the collecting region of the collecting device and detected by the collecting device, diverting these portions of the fluid streams in different spatial directions upon impact on the workpiece and/or the coating material.
It is also preferred that the fluid flow conducted through the collecting device is conducted back to the fluid inlet by means of the fluid guiding device. This makes it possible for the part of the energy quantity of the fluid flow that is not transmitted to the workpiece and/or the coating material during activation to be returned to the fluid energy machine or the temperature control device. This yields the advantage that the temperature control device only has to consume the amount of energy which is extracted from the fluid flow during the activation process. Thereby not heating the environment unnecessarily and reducing energy costs.
In a further preferred embodiment, the device is designed such that the fluid stream introduced at the fluid inlet is formed by the fluid stream returned by the collecting device and one and/or more additional external fluid streams. It is thereby possible to generate fluid streams for activating the workpiece and/or the coating material, which fluid streams are composed of different components. There is also the advantage that the temperature of the fluid stream which is returned or used for activation can also be reduced by the external fluid stream with a low amount of energy.
It is also preferred for the device that downstream of the fluid inlet and upstream of the fluid energy mechanism and the temperature control device a filter device is connected for purifying the fluid, in particular for removing solid particles. This ensures that no foreign particles and/or fluid from the surroundings and/or the workpiece and/or the coating material enter the fluid energy machine and the temperature control device. This has the advantage that the activation device is protected from damage. The workpiece and/or the coating material itself is also protected in this way against undesired constituents.
A further preferred embodiment of the device is characterized in that a particularly adjustable deflection device, in particular a deflection nozzle, is provided at the fluid outlet for deflecting the treated fluid flow in all the different spatial directions. This makes it possible to impinge the fluid stream at different angles onto the workpiece material and/or the coating material.
It is also preferred that the outflow height of the fluid flow can be variably set by means of the deflecting device. In this way, the respective length section can be set on the workpiece material and/or the coating material to be activated.
It is also preferred that the control unit controls the steering device open-loop and/or closed-loop to set the outflow height and/or spatial direction of the treated fluid flow. This makes it possible to variably adjust the discharge height and/or the spatial direction of the treated fluid flow during the coating process as a function of different workpieces and/or coating materials and/or different workpiece material geometries and/or coating material geometries. In this way, a more flexible and more efficient activation or coating process in the apparatus is possible.
It is also preferred for the device to be arranged upstream of the pressing device between the workpiece to be coated and the coating material. This makes it possible to achieve a space-saving arrangement in which the activation of the workpiece and/or of the coating material takes place only shortly upstream of the pressing device. This has the advantage that the dwell time of the activated workpiece and/or coating material up to the pressing device is as short as possible, so that the workpiece and/or coating material arrives in the pressing device in an optimally activated manner. However, this does not exclude that the residence time of the activated workpiece and/or of the coating material can also be designed to be as long as possible if required, in that: the deflecting device is arranged at a correspondingly large distance upstream of the pressing device between the workpiece to be coated and the coating material.
The method according to the invention for coating a workpiece by means of a coating installation has the following steps. The workpiece is conveyed relative to an activation device and a pressing device, a fluid flow is generated and heated in the activation device as a function of the workpiece and/or the geometry and/or material properties of the coating material and/or the relative movement of the workpiece, the workpiece and/or the coating material and/or the functional layer is activated with the fluid flow generated in the activation device, the activated coating material is pressed onto the surface of the workpiece and/or of the coating material to be coated and/or the coating material is pressed onto the coated surface of the activated workpiece.
Drawings
Further features and advantages of the device result from the following description of an embodiment with reference to the drawings. Shown in the attached drawings:
FIG. 1 shows a schematic top view of an apparatus according to the invention for coating a workpiece;
fig. 2 shows a schematic configuration of an activation device of the coating apparatus according to the present invention according to a first embodiment;
fig. 3 shows a schematic configuration of an activation device of a coating apparatus according to the invention according to a second embodiment.
Detailed Description
It is obvious to the person skilled in the art that the individual features described in the different embodiments can also be implemented in a single embodiment, as long as they are not structurally incompatible. Likewise, various features that are described in the context of a single embodiment can also be provided in multiple embodiments separately or in any suitable subcombination.
Fig. 1 shows a schematic top view of a device 17 for coating a workpiece 11. The device 17 is used for coating workpieces, preferably made at least in sections of wood, wood-based panels, plastics or the like, as are widely used in the furniture and building construction industry. The coating material 1 can be, for example, a narrow-side coating (edge) which is composed of the most different materials, for example, plastic, veneer, paper or also metal. Alternatively or additionally, however, the broad surface or any other surface of the workpiece 11 can also be provided with the coating material 1.
Although the invention is not limited to this, the coating material 1 has a functional layer 2 which is arranged on the side of the coating material 1 facing the workpiece 11. The functional layer 2 can be, for example, an adhesive that can be activated by means of heat, such as a hot melt adhesive. Alternatively, it is also conceivable for the coating material 1 to have an integral layer 2, which exerts adhesive properties by activation, for example a different meltable plastic. The entire coating material 1 can also consist of a corresponding material, so that no discrete functional layers 2 are present. Furthermore, it is also conceivable for the functional layer 2 to be activated to be located on the workpiece 11 itself and/or to be integrally connected thereto. Furthermore, the functional layer can also be supplied and activated separately.
The heat or thermal energy for activating the functional layer is transported in particular by means of a fluid flow. In other words, forced convection is concerned here, in which the particles are transported by external action, for example forced by a blower or a pump. The heated (pressure) stream may in the simplest case be hot air. However, it is likewise possible for the fluid to also contain other gases and/or, if appropriate, also liquids or liquid droplets.
The device comprises first of all a pressing device 12, which in the present exemplary embodiment has a pressing roller and is used to press the coating material 1 onto the surface of the workpiece 1 to be coated.
In addition, the coating installation 16 comprises a conveying device, for example in the form of a conveyor belt, conveyor chain or the like, which is not shown in fig. 1, however.
Furthermore, the coating device 17 comprises an activation device 15, which in the present exemplary embodiment outputs a heated fluid for activating the functional layer 2. Fig. 1 shows a top view of the deflecting device 4 and the collecting device of the activation device 15, wherein the deflecting device 4 is arranged in particular between the workpiece 11 and the coating material 1 in such a way that it is oriented in the direction of the pressing device 12 in a wedge-shaped manner and delivers the heated fluid in the direction of the coating material 1. The feed direction of the workpiece 11 and the feed direction of the coating material 1 form an acute angle according to the present embodiment, wherein the respective angular point is the point between the pressure roller 12 and the workpiece 11 at which the coating material 1 is pressed onto the workpiece 11.
Fig. 2 shows a schematic configuration of a first embodiment of an activation device 15, which is part of a coating installation 16. However, the collecting device 14 and the deflecting device 4 of the activation device 15 are also shown in fig. 1. The activation device 15 comprises a fluid energy machine 6 which generates a fluid flow and preferably operates in a pressure range of 0 bar to 10 bar, more preferably in a pressure range of 2 bar to 6 bar. In the present embodiment, the fluid energy machine is designed in particular with a twin turbine, which is driven by means of an electric motor with an adjustable rotational speed. Three-bladed or multi-bladed turbines are also contemplated. Furthermore, for example, electric motors in combination with disk rotors, compressor wheels or other turbines or the like are also possible. Piston compressors may also be used to generate fluid flow. It is also conceivable for the fluid energy machine itself or individual components thereof to be formed integrally with and/or arranged below the coating system, for example.
According to the present embodiment, the fluid inlet is provided on the fluid energy machine 6, on which, for example, fresh air 10 is introduced or sucked in. Furthermore, it is also conceivable to supply other gases and/or liquids in addition to the fresh air 10 or instead of the fresh air 10. In this way a fluid flow with a defined composition can be generated.
Between the fluid inlet and the fluid energy machine 6, in particular, a filter device is connected for purifying the fluid, for example for removing solid particles and/or liquids, which are not shown in fig. 2. For example, a general filter, a coalescing filter, a dust filter, an activated carbon filter and/or an ultrafine filter can be used.
Furthermore, the fluid energy machine 6 according to the first embodiment is coupled to the temperature control device 5 in such a way that the generated fluid flow is directly conducted into the temperature control device 5. In particular, the fluid flow is heated in the temperature control device, in other words thermal energy is transferred to the particles of the fluid flow. This can be achieved, for example, by means of resistance heating cartridges, lasers, microwaves, infrared, plasma and/or ultrasound, etc. The temperature control device 5 is not limited to the supply of heat to the fluid flow, but can also be used to extract thermal energy from the fluid flow. More precisely, the temperature control device 5 also serves to set the thermal energy of the fluid flow in a defined manner.
The activation device 15 furthermore has a particularly adjustable deflecting device 4, which may be designed, for example, as a deflecting nozzle. The turning nozzle comprises a fluid outlet and is used to turn the heated fluid flow 3 in all different spatial directions. The deflecting device 4, and in particular the deflecting nozzle, is designed such that the outflow height H of the fluid stream is settable. The outflow height H is defined in the context of a spatial spread in one direction measured in one dimension. The workpiece 11 to be activated and/or the corresponding spatial extent of the coating material 1 also have a definable length dimension in a specific spatial direction, so that the outflow height H of the fluid flow can be adapted to said length dimension. In other words, the spread of the fluid flow can be variably adjusted depending on the distance between two points in space or on the workpiece 11 to be activated and/or the corresponding coating material 1. In fig. 2, the outflow height H of the fluid flow is defined as the length and/or width of the cover material 1 or the functional layer 2.
According to this embodiment, the activation device 15 comprises a collection device 14, for example in the form of a hood. According to fig. 2, the coating material 1 with the functional layer 2 is guided along in the interior region of the collecting device 14. The deflecting device 4 is oriented in such a way that the heated fluid flow impinges on the coating material 1 with the functional layer 2 via the respective inlet opening of the collecting device 14.
The collecting device 14 further comprises an outlet opening, to which the fluid conducting device 8 is coupled in order to conduct the fluid collected in the collecting device 14 out and directly to the fluid inlet on the fluid energy machine 6.
The collecting device 14 can be designed in particular as a suction device which actively discharges the heated fluid flow. The suction effect can be derived, for example, by means of the negative pressure generated by the fluid energy machine 6. The suction effect can likewise be achieved by configuring the collecting device 14 as a venturi nozzle.
Fig. 3 shows a schematic configuration of the activation device 15 in fig. 1 according to a second embodiment. The activation device differs from the first embodiment in that the fluid inlet is arranged on the temperature conditioning device 5. In other words, the fluid energy machine 6 is coupled to the temperature control device 5 in such a way that the external fluid 10 and/or the fluid returned via the fluid conducting device 8 is first sucked and controlled in temperature via the fluid inlet on the temperature control device 5 and is only subsequently transported via the fluid energy machine 6 to the fluid outlet on the deflection device 4. According to this embodiment, a filter device (not shown in fig. 3) is connected in particular between the fluid inlet and the temperature control device 5.
According to the first embodiment and according to the second embodiment, the apparatus 16 for coating a workpiece comprises a control unit 17. The control unit controls, in particular, the conveying device, the deflecting device 4, the collecting device 14, the temperature control device 5 and/or the fluid energy machine 6. By means of the control unit 17 and the regulator 13, different fluid flow parameters, such as volume flow, pressure and/or temperature, can be regulated in order to transport a constant amount of energy via the fluid flow. For example, the regulator 13 regulates the rotational speed of the electric motor 7 of the fluid energy machine in order to set a defined fluid volume flow. It is also conceivable that the regulator 13, for example, regulates the energy source such that a defined amount of energy is transmitted to the fluid flow.
In such open-loop and closed-loop control, in particular, different sensors are provided in the coating installation 16 in order to detect, for example, the volume flow, the pressure and/or the temperature of the fluid or of the fluid flow. These sensors can be arranged, for example, at the fluid outlet of the deflecting device 4 and/or in the region of the collecting device 14. Furthermore, it is also conceivable for the sensor to detect the activation state of the workpiece 11 and/or of the coating material 1 or of the functional layer 2 and to adjust the amount of energy of the fluid flow on the basis thereof. For example, in this context, the temperature of the workpiece 11 to be coated and/or of the coating material 1 can be determined.
Furthermore, in particular the amount of energy to be transmitted to the workpiece 11 and/or the coating material 1 can be set by open-loop control and closed-loop control of the feed of the coating material 1 and/or the workpiece 11. For this purpose, for example, open-loop and closed-loop control of the conveying device is possible.
Furthermore, the control unit 17 controls the deflection device 4 in particular such that the outflow height H and/or the spatial direction of the heated fluid flow are adapted to the geometry and/or the material composition of the different workpieces 11 and/or the coating material 1 and/or the functional layer 2, respectively, during operation.
The above-described open-loop and closed-loop control of the various components of the coating plant 16 and/or the different parameters of the fluid (flow) may be carried out individually and/or in combination in a compound form during the coating process.
List of reference numerals
1 coating material, narrow-side coating
2 functional layer
3 treated fluid, hot air
4 steering device, steering nozzle
5 temperature adjusting device
6 fluid energy machine, air flow generator
7 drive motor, electric motor
8 fluid-conducting apparatus, sucking air
9 fluid flow, air flow
10 external fluid flow, fresh air
11 workpiece
12 pressing device
13 regulator
14 collecting device
15 activating device
16 device for coating workpieces
17 control unit
Claims (15)
1. An apparatus (16) for coating a workpiece (11), preferably at least partly made of wood, artificial board, plastic or the like, comprising:
a pressing device (12) for pressing a coating material (1) onto a surface to be coated of the workpiece (11);
-a conveying device for causing a relative movement between the workpiece (11) and the pressing device (12);
an activation device (15) for activating the workpiece (1), and/or the coating material (1), and/or the functional layer (2),
it is characterized in that the preparation method is characterized in that,
the activation device (15) has
A fluid energy machine (6) for generating a fluid stream (9), the fluid energy machine preferably operating in a pressure range of 0 bar to 10 bar, more preferably in a pressure range of 2 bar to 6 bar;
a temperature control device (5) for heating the fluid flow, which is coupled to the fluid energy machine (6) in such a way that
A fluid (10), in particular air, can be supplied at the fluid inlet and a heated fluid flow (3) can be supplied at the fluid outlet, which can be directed onto the workpiece (11) to be activated and/or the workpiece coating material (1).
2. The apparatus as set forth in claim 1, wherein,
it is characterized in that the preparation method is characterized in that,
the device has a control unit (17) which is provided for open-loop and/or closed-loop control of the temperature control device (5) and/or the fluid energy machine (6) in such a way that the fluid flow (3) impinges on the workpiece (11) to be activated and/or the workpiece coating material (1) and/or the functional layer (2) to be activated and/or transmits a defined amount of energy with definable parameters, in particular volume flow, pressure and/or temperature.
3. The apparatus of claim 1 or 2,
it is characterized in that the preparation method is characterized in that,
the control unit (17) regulates the feed of the workpiece (11) and/or of the coating material (1) and/or of the functional layer (2) such that a defined amount of energy is transmitted by the treated fluid stream (3) onto the workpiece (11) and/or the coating material (1).
4. The apparatus of any one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
the fluid energy machine (6) has an electric motor (7), which is particularly speed-adjustable and which sets a blade system, in particular a twin turbine, in motion in order to generate the fluid flow.
5. The apparatus of any one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
the temperature control device (5) has a particularly adjustable energy source which heats the fluid flow by means of a resistance heating cartridge, laser, microwave, infrared, plasma and/or ultrasound.
6. The apparatus of any one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
a collecting device (14), in particular a funnel-shaped collecting hood, is arranged in the fluid flow downstream of the fluid outlet, so that the fluid flow of the fluid outlet, which is directed onto the workpiece (11) to be activated and/or the workpiece coating material (1), is located in a collecting region of the collecting device (14).
7. The apparatus as set forth in claim 6, wherein,
it is characterized in that the preparation method is characterized in that,
the treated fluid flow impinges on the workpiece (11) and/or the coating material (1) in an inner region of the collecting device (14).
8. The apparatus of claim 6 or 7,
it is characterized in that the preparation method is characterized in that,
the fluid flow guided out by the collecting device (14) is guided back to the fluid inlet by means of a fluid guiding device (8).
9. The apparatus as set forth in claim 8, wherein,
it is characterized in that the preparation method is characterized in that,
the fluid flow introduced at the fluid inlet is formed by the fluid flow returned by the collecting device (14) and one and/or more additional external fluid flows (10).
10. The apparatus of any one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
downstream of the fluid inlet and upstream of the fluid energy machine (6) and the temperature control device (5), a filter device is connected for purifying the fluid, in particular for removing solid particles.
11. The apparatus of any one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
a particularly adjustable deflecting device (4), particularly a deflecting nozzle, is provided at the fluid outlet for deflecting the treated fluid flow (3) in all different spatial directions.
12. The apparatus as set forth in claim 11, wherein,
it is characterized in that the preparation method is characterized in that,
the outflow height (H) of the treated fluid flow (3) can be set variably by means of the deflecting device.
13. The apparatus of claims 2, 11 and 12,
it is characterized in that the preparation method is characterized in that,
the control unit (17) controls the diversion device (4) in an open-loop and/or closed-loop manner for setting the outflow height (H) and/or the spatial direction of the treated fluid flow (3).
14. The apparatus of one of claims 11 to 13,
it is characterized in that the preparation method is characterized in that,
the deflecting device (4) is arranged upstream of the pressing device (12) between the workpiece (11) to be coated and the coating material (1).
15. Method for coating a workpiece by means of a coating apparatus according to one of the preceding claims, with the following steps:
-conveying the workpiece (11) with respect to the activation device (15) and the compaction device (12);
generating and heating the fluid flow in the activation device (15) depending on the geometry and/or material properties of the workpiece (11) and/or the coating material (1) and/or the functional layer (2) and/or the relative movement of the workpiece (11),
activating the workpiece (11), and/or the coating material (1), and/or the functional layer (2) by means of a fluid flow generated in the activation device,
pressing the activated coating material (1) onto the surface of the workpiece (11) to be coated and/or pressing the coating material (1) onto the surface of the activated workpiece (11) to be coated.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020131506.6 | 2020-11-27 | ||
| DE102020131506.6A DE102020131506A1 (en) | 2020-11-27 | 2020-11-27 | Device and method for coating a workpiece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114559504A true CN114559504A (en) | 2022-05-31 |
Family
ID=78770453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111422880.8A Pending CN114559504A (en) | 2020-11-27 | 2021-11-26 | Device and method for coating workpieces |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4005758A1 (en) |
| CN (1) | CN114559504A (en) |
| DE (1) | DE102020131506A1 (en) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10342723B4 (en) | 2003-09-16 | 2005-12-15 | Delle Vedove Maschinenbau Gmbh | heat exchanger device |
| DE102011015898B4 (en) | 2011-04-01 | 2016-10-06 | Christof Schulte-Göbel | Narrow area coating device and method for applying an adhesive-free heat-activatable edge coating by means of hot air or hot gas |
| DE102012213796B4 (en) * | 2012-08-03 | 2021-03-25 | Brandt Kantentechnik Gmbh | Method and device for coating workpieces |
| DE102013208127A1 (en) | 2013-05-03 | 2014-11-06 | Homag Holzbearbeitungssysteme Gmbh | Hot gas generating system |
| DE102013012644A1 (en) | 2013-07-30 | 2015-02-05 | Ima Klessmann Gmbh Holzbearbeitungssysteme | Coating device and activation module for a coating device |
| EP2902160B1 (en) * | 2014-02-04 | 2018-05-23 | BIESSE S.p.A. | Machine for edgebanding wood panels or the like |
| DE102015119373A1 (en) | 2015-11-10 | 2017-05-11 | Holger Kluge | Heating device, in particular for an edge strip applicator or for a cutting device for cutting films or workpieces made of plastic or rigid foam or for a device for welding workpieces |
| DE102017122701A1 (en) | 2017-09-29 | 2019-04-04 | Homag Gmbh | Coating device and coating method |
| DE102019113270A1 (en) * | 2019-05-20 | 2020-11-26 | Homag Gmbh | Hot gas device for providing hot gas as well as coating device and method for coating workpieces |
| DE102019133934A1 (en) | 2019-12-11 | 2021-06-17 | Homag Gmbh | Device and method for coating a workpiece |
-
2020
- 2020-11-27 DE DE102020131506.6A patent/DE102020131506A1/en active Pending
-
2021
- 2021-11-23 EP EP21209859.4A patent/EP4005758A1/en not_active Withdrawn
- 2021-11-26 CN CN202111422880.8A patent/CN114559504A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP4005758A1 (en) | 2022-06-01 |
| DE102020131506A1 (en) | 2022-06-02 |
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Application publication date: 20220531 |