EP3448583B1 - Treatment plant for treating longitudinal bars - Google Patents

Treatment plant for treating longitudinal bars Download PDF

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Publication number
EP3448583B1
EP3448583B1 EP16781320.3A EP16781320A EP3448583B1 EP 3448583 B1 EP3448583 B1 EP 3448583B1 EP 16781320 A EP16781320 A EP 16781320A EP 3448583 B1 EP3448583 B1 EP 3448583B1
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EP
European Patent Office
Prior art keywords
treatment plant
sub
station
longitudinal bars
decoration
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.)
Active
Application number
EP16781320.3A
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German (de)
English (en)
French (fr)
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EP3448583A1 (en
Inventor
Salvatore PERSANO
Luca CERATO
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.)
Orso Holding d o o
Original Assignee
Orso Holding d o o
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 Orso Holding d o o filed Critical Orso Holding d o o
Priority to SI201630968T priority Critical patent/SI3448583T1/sl
Priority to RS20201324A priority patent/RS61110B1/sr
Publication of EP3448583A1 publication Critical patent/EP3448583A1/en
Application granted granted Critical
Publication of EP3448583B1 publication Critical patent/EP3448583B1/en
Priority to HRP20201773TT priority patent/HRP20201773T1/hr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
    • B24B29/02—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces
    • B24B29/06—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces for elongated workpieces having uniform cross-section in one main direction
    • 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
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/021—Apparatus for spreading or distributing liquids or other fluent materials already applied to the surface of an elongated body, e.g. a wire, a tube
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B16/00—Spray booths
    • B05B16/20—Arrangements for spraying in combination with other operations, e.g. drying; Arrangements enabling a combination of spraying operations
    • 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
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/023—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/0207—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the work being an elongated body, e.g. wire or pipe
    • B05B13/0214—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the work being an elongated body, e.g. wire or pipe the liquid or other fluent material being applied to the whole periphery of the cross section of the elongated body
    • 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
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/06—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length by rubbing contact, e.g. by brushes, by pads
    • 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
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/023—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface
    • B05C11/025—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface with an essentially cylindrical body, e.g. roll or rod
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2201/00—Polymeric substrate or laminate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2202/00—Metallic substrate
    • B05D2202/20—Metallic substrate based on light metals
    • B05D2202/25—Metallic substrate based on light metals based on Al
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2203/00—Other substrates
    • B05D2203/20—Wood or similar material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2254/00—Tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects

Definitions

  • the present invention refers to a treatment plant for treating longitudinal bars.
  • treatment plants for treating longitudinal bars for example for realizing windows, doors and shutters, and having a series of treatment stations, among which at least one painting station for painting the bars and at least one decoration station for decorating the painted bars.
  • the painting station can be of a type with horizontal or vertical conveyance of the bars, whereas the actual painting can be of a type for liquid painting or powder coating.
  • the decoration station can also be characterized by the vertical or horizontal conveying mode for the painted bars, and by the decoration mode, which generally comprises decorating tools such as rotating brushes supported by specific portals.
  • Every type of plant has its own particular features that make it better suited than others in specific circumstances, although the primary need of all types of plants consists in the optimization of productivity with the best possible quality and cost effectiveness as regards the end product.
  • the quality of the product is measured, on the one hand, in terms of the correspondence of the decoration to the effect to be imitated, for example to a wood-like effect and, on the other hand, in terms of the duration of the decoration, which is often characterized by deterioration problems due to exposure to the elements and chemical cleaning products.
  • Some types of plants are able to offer good productivity at the expense of quality or cost, while others offer optimal performance but are limited to bars made of only one material, for example aluminium and therefore they cannot be utilized profitably for the treatment of bars made of a different material such as PVC, wood and suchlike.
  • US2193971 discloses a treatment plant comprising a single decoration sub-station, i.e. not a sequence of decoration sub-stations, downstream a painting sub-station.
  • US2007082180 A1 discloses fixed, i.e. not rotatable, decoration sub-stations.
  • the technical task of the present invention is therefore to realize a treatment plant for treating longitudinal bars that makes it possible to eliminate the cited technical drawbacks of the prior art.
  • one aim is to realize a treatment plant for treating longitudinal bars that proves to be highly productive, while ensuring optimal quality and cost effectiveness as regards the end product.
  • Another aim of the invention is to realize a treatment plant for treating longitudinal bars that is flexibly adaptable for performing a wide variety of decorations on bars of various shapes and made of various materials.
  • Another aim of the invention is to realize a treatment plant for treating longitudinal bars in which the decorations achieved are extremely resistant, so as to increase the average life of the windows, doors and shutters.
  • a further aim of the invention is to realize a treatment plant for treating longitudinal bars that is highly automated and suited to completing the treatment in a single step.
  • the aim of realizing a treatment plant for treating longitudinal bars that proves to be extremely compact is another aim that is not least in importance.
  • a treatment plant for treating longitudinal bars comprising at least one painting sub-station for painting the bars and characterized in that it comprises a sequence of decoration sub-stations for decoration the painted bars, each sub-station comprising a rotatable annular frame, at least one movable support sustained by the annular frame, and at least one decoration tool sustained by the support and that can be placed in a position for interacting with the bars passing through the frame.
  • the field of application ranges from windows and doors to outdoor furniture, shading systems, Venetian blinds, roller blinds, shutters and suchlike.
  • the annular frame is rotatable about the centre thereof in the plane in which it lies.
  • said support is movable radially from and towards the centre of said annular frame.
  • the annular frames are arranged in parallel vertical planes.
  • the annular frames are aligned along an axis passing through the centre thereof.
  • the annular frames are aligned along an axis orthogonal to the plane in which they lie.
  • the annular frames are supported by external frames that can slide along a linear guide and be fastened in an adjustable position to the linear guide so as to adjust the mutual distance between the annular frames.
  • a preferred embodiment of the invention comprises adjustment means for adjusting the position of the support along the circumference of the annular frame.
  • At least two decoration tools are provided and spaced along the circumference of the annular frame.
  • the decoration tool is connected rigidly or in an articulated or rotational manner to the support.
  • At least two adjacent decoration sub-stations have a different type of decoration tool.
  • At least one tool is selected from a paintbrush, a brush, a doctor blade and a pad for a wood effect.
  • the pad can be rotating and cylinder- or crescent-shaped.
  • said decoration sub-stations have conveying means for conveying the bars horizontally.
  • said painting sub-station has conveying means for conveying the bars horizontally.
  • said painting sub-station is of a type for liquid painting.
  • the liquid paint used is a bicomponent solvent-based acrylic finish paint.
  • a treatment plant for treating longitudinal bars 2 for realizing windows, doors and shutters is shown and indicated in its entirety by reference number 1.
  • the plant described herein below is used particularly for treating bars made of PVC.
  • the plant 1 comprises three successive treatment stations 3, 4 and 5 managed by a dedicated or shared programmable logic controller (PLC).
  • PLC programmable logic controller
  • the first treatment station 3 is substantially used for painting the bars 2 with a primer coat
  • the second treatment station 4 is substantially used for painting the bars 2 with a coat of finish paint
  • the third treatment station 5 is substantially used for decorating the painted bars 2.
  • the first treatment station 3 comprises in a cascade arrangement, a sub-station 6 for loading the bars 2, a first alignment and motion-transmission sub-station 7 for aligning and transmitting motion to the bars 2, a washing station 8, a second alignment and motion-transmission sub-station 9 for aligning and transmitting motion to the bars 2, a first sub-station 10 for heating and drying the bars 2, a third alignment and motion-transmission sub-station 11 for aligning and transmitting motion to the bars 2, a painting sub-station 12, a second sub-station 13 for heating and drying the bars 2, and a sub-station 14 for unloading the bars 2.
  • the sub-stations 6, 7, 8, 9, 10, 11, 12, 13, 14 of the first treatment station 3 are aligned in succession along a horizontal conveying direction C of the bars 2.
  • the longitudinal axis of the bars 2 is positioned horizontally and parallel to the conveying direction C and the bars 2 are arranged in a line in the conveying direction C at a pre-established spacing distance.
  • the alignment and movement sub-stations 7, 9, 11 have conveying means configured to provide the bars 2 with continuous movement at a constant speed along the first treatment station 3.
  • the first sub-station 6 for loading the bars 2 comprises by way of example a motorized horizontal mat located on a pneumatic lift platform.
  • the motorized mat is arranged between a lateral loader with horizontal conveyor belts from which it receives the bars 2 and the entrance to the first alignment and motion-transmission sub-station 7.
  • the first alignment and motion-transmission sub-station 7 comprises a set of lateral adjusters employed to keep the bars 2 aligned along the conveying direction C, while the conveying means comprises a series of rollers arranged horizontally and adjustable in height, of which some are sliding idler rollers and at least one is a motorized drive roller.
  • An activation device similar to the activation device for activating the support for the decoration tools can be provided for roller height adjustment and it will be described below.
  • the washing sub-station 8 has dispensing means for dispensing a degreasing liquid, brushing means and drying means, all in a cascade arrangement.
  • the degreasing liquid dispensing means comprises a series of spray guns conveniently oriented towards the bars 2 from various angles.
  • the degreasing liquid consists of 99% pure acetone.
  • the brushing means comprises a series of rotating brushes with an opposite direction of rotation with respect to the direction of movement of the bars 2.
  • the rotating brushes differ in orientation; specifically, they have at least two orientations orthogonal with respect to each other and also orthogonal with respect to the direction of movement of the bars 2.
  • the drying means comprises a compressed air generator connected to slits for dispensing the air that are oriented towards the bars 2, so as to create jets of air for removal of dirt residue and for drying the degreasing liquid present on the bars 2.
  • the second alignment and motion-transmission sub-station 9 is similar to the first one and therefore it shall not be described again here.
  • the first heating and drying sub-station 10 for heating and drying the bars 2 comprises an insulated tunnel, within which a set of short-wave IR lamps are arranged.
  • the power can be modulated for the lamps independently of each other.
  • the task of the first drying sub-station 10 is to bring the bars 2 to a temperature suitable for facilitating subsequent homogeneous painting and more rapid drying of the paint applied.
  • the optimal temperature range in the specific example of bars 2 made of PVC to be painted with monocomponent or bicomponent water-based acrylic/polyurethane liquid paint is comprised between 10°C and 75°C.
  • the third alignment and motion-transmission sub-station 11 is similar to the first one and therefore it shall not be described again here.
  • the painting sub-station 12 comprises a set of high-pressure spray guns oriented at various angles with respect to the bars 2. Upon impact on the pre-heated bars 2, the liquid paint undergoes rapid heating, which helps to fix it to the surface.
  • the second heating and drying sub-station 13 for heating and drying the bars 2 is similar to the first one and therefore it shall not be described again here.
  • the unloading sub-station 14 for unloading the bars 2 comprises a motorized horizontal mat located on a pneumatic lift platform.
  • the motorized mat is arranged between the exit of the second heating and drying sub-station 13 and a lateral unloader with horizontal conveyor belts to which it transfers the bars 2.
  • a static oven 15 acting as a cross-linking catalyst for the paint is interposed between the exit from the first treatment station 3 and the entrance to the second treatment station 4.
  • the period of time in which the bars 2 remain in the static oven ranges from 2 to 6 hours at a temperature in the range of 30°C to 70°C.
  • the second treatment station 4 comprises in a cascade arrangement a loading sub-station 16 for loading the bars 2, an alignment and motion-transmission sub-station 17 for aligning and transmitting motion to the bars 2 and a painting sub-station 18.
  • the sub-stations 16, 17, 18 of the second treatment station 4 are aligned in succession along a horizontal conveying direction C' of the bars 2.
  • the longitudinal axis of the bars 2 is positioned horizontally and parallel to the conveying direction C' and the bars 2 are arranged in a line in the conveying direction C' at a pre-established spacing distance.
  • the alignment and movement sub-station 17 has conveying means configured to provide the bars 2 with continuous movement at a constant speed along the second treatment station 4.
  • the loading sub-station 16 for loading the bars 2, the alignment and motion-transmission sub-station 17 for aligning and transmitting motion to the bars 2 and the painting sub-station 18 are similar to those of the first treatment station 3 and therefore they shall not be described again here.
  • the spray guns operate at low pressure to deposit a coat of finish paint that is generally a thinner coat than the primer coat.
  • the spray guns have specific regulating means for regulating the air pressure/flow for nebulization of the paint, such as to modify the size of the nebulized particles of paint as desired, as a function of the desired result.
  • the third treatment sub-station 5 comprises a sequence of decoration sub-stations 19, 19', 19'', 19''', 19'''', an alignment and motion-transmission sub-station 20 and an unloading sub-station 21, all in a cascade arrangement.
  • the sub-stations 19, 19', 19", 19''', 19''', 20, 21 of the third treatment station 5 are aligned in succession along a horizontal conveying direction C" of the bars 2.
  • the direction C" of alignment of the sub-stations 19, 19', 19", 19''', 19''', 20, 21 of the third treatment station 5 is coaxial with the direction C' of alignment of the sub-stations 16, 17, 18 of the second treatment station 4.
  • the longitudinal axis of the bars 2 is positioned horizontally and parallel to the conveying direction C" and the bars 2 are arranged in a line in the conveying direction C" at a pre-established spacing distance.
  • the alignment and movement sub-station 20 has conveying means configured to provide the bars 2 with continuous movement at a constant speed along the third treatment station 5.
  • the alignment and motion-transmission sub-station 20 and the unloading sub-station 21 are similar to those of the first treatment station 3 and therefore they shall not be described again here.
  • Each decoration sub-station 19, 19', 19'', 19''', 19''', 19''' comprises an annular frame 22, 22', 22'', 22''', 22'''' that is rotatably supported by a specific fixed frame 32, 32', 32'', 32''', 32''', 32''''.
  • the fixed frame supports idler rollers 40, 40' 40", 40''', 40'''' arranged horizontally for supporting and guiding the annular frame 22, 22', 22", 22''', 22'''.
  • the idler rollers 40, 40' 40", 40''', 40"" have a perimeter groove in which the external circular perimeter of the annular frame 22, 22', 22", 22''', 22"" slidably engages.
  • the drive rollers and the supporting and guiding rollers can be substituted with specific motorized conveyor belts.
  • Each rotatable annular frame 22, 22', 22", 22''', 22"" sustains one or more movable supports 23, 23', 23", 23''', 23''', which, in turn, support a decoration tool 24, 24', 24", 24''', 24''' that can be placed in a position for interacting with the bar 2.
  • Each annular frame 22, 22', 22", 22''', 22''' can be activated in rotation independently of the others by means of a motor 30, 30', 30", 30''', 30''', for example a dedicated stepper motor and transmission system.
  • the transmission system can be made up of a pinion 31a mounted on the output shaft of the motor 30'' and engaged with an open drive chain 31b, the ends of the latter being fastened at two suitably spaced points along the circumference of the annular frame 22''.
  • Each annular frame 22, 22', 22", 22''', 22''' is rotatable about the centre thereof in the plane in which it lies.
  • Each support 23, 23', 23", 23''' is movable radially from and towards the centre of the relative annular frame 22, 22', 22", 22'''.
  • Each support 23, 23', 23", 23''', 23''' can be moved independently of the others.
  • the support 23" appearing in Figures 5 and 6 in sub-station 19 it has a threaded hole 29 in which a motor-operated screw 41 is engaged and constrained to a block 42 fastened to the annular frame 22, so as to be able to rotate about itself without translation.
  • the block 42 supports the motor 43 for actuating the screw 41 and has guide holes 44 parallel to the screw 41 in which special rods 45 are slidably engaged, solidly constrained to the support 23; as rotation of the support 23 is blocked owing to the constraint exerted by the guide holes 44 on the rods 45, the motion transmitted to the support 23 by the screw 41 is purely translational in a direction parallel to the screw 41.
  • the structure of the supports 23, 23', 23''', 23'''' may be similar to that of the support 23" and therefore they shall not be described again here.
  • the annular frames 22, 22', 22", 22"', 22''' are arranged in parallel vertical planes and in particular they are aligned along an axis passing through the centre thereof and orthogonal to the plane in which they lie.
  • the frames 32, 32', 32", 32''', 32''' are preferably supported slidably independently of each other along a horizontal linear guide 34 and they can be fastened in an adjustable position to the horizontal linear guide 34 so as to adjust their mutual distance.
  • adjustment means are provided for adjusting the position of the supports 23, 23', 23", 23''', 23'''' along the circumference of the relative annular frame 22, 22', 22", 22''', 22''''.
  • this adjustment means comprises a succession of holes 27 along the circumference of the annular frame 22, said holes being selectable for fastening the blocks 42.
  • the structure of the adjustment means on the other annular frames 22, 22''', 22'''' may be similar to that provided for the annular frame 22" and therefore it shall not be described again here.
  • At least two decoration tools 24, 24', 24", 24''', 24''' of the same type are provided and spaced along the circumference of the annular frame 22, 22', 22'', 22''', 22''''.
  • different annular frames 22, 22', 22", 22''', 22''' have different types of decoration tools 24, 24', 24', 24''', 24''''.
  • the decoration tools 24, 24', 24", 24''', 24''' are connected in a fixed or articulated or rotational manner to the supports 23, 23', 23", 23''', 23'''', according to the type of tool.
  • the decoration tools 24, 24', 24", 24''', 24''' may include paintbrushes, brushes, doctor blades and pads.
  • the plant comprises five decoration sub-stations 19, 19', 19", 19''', 19'''', each equipped with specific sensor technology for detection of the presence of the bar 2 to be decorated.
  • the five decoration sub-stations 19, 19', 19", 19''', 19'''' are arranged at an adjustable distance from each other, for example a distance ranging from 0.1 m to 1 m.
  • the distance between the various decoration sub-stations 19, 19', 19'', 19"', 19'''' is not necessarily the same.
  • a first decoration sub-station 19 is equipped with three paintbrushes 24, of which two are placed horizontally at opposite sides of the bar 2 to be decorated and one is placed vertically above the bar 2 to be decorated.
  • the paintbrushes 24 are connected rigidly to the supports 23 of the frame 22.
  • a second decoration sub-station 19' is comprised downstream of the first decoration sub-station 19 and it is equipped with an oscillating doctor blade 24' placed vertically above the bar 2 to be decorated.
  • the doctor blade 24' is oscillated by a specific motor (unillustrated) directly supported by the support 23'.
  • a third decoration sub-station 19" is comprised downstream of the second decoration sub-station 19' and it is equipped with an oscillating pad 24" placed horizontally above the bar 2 to be decorated.
  • the pad 24" is oscillated about its horizontal axis by a specific motor 46"b and relative transmission 46"c, both of the latter being supported by an element 23'' a hinged with a horizontal hinge axis 24''b to the support 23".
  • the pad 24" In addition to oscillating about its horizontal axis 24"a, the pad 24" also executes a vertical translational movement along an axis 24"c actuated by the motor 43 and a rotational movement about the horizontal axis 24''b that is offset from the horizontal axis 24 and it is actuatable by a motor 46"d and the relative transmission 46e.
  • a fourth decoration sub-station 19''' is comprised downstream of the third decoration sub-station 19" and it is equipped with a rotating brush 24''' placed horizontally above the bar 2 to be decorated.
  • the brush 24''' is rotated about its horizontal axis by a specific motor (unillustrated) directly supported by the support 23'''.
  • a fifth decoration sub-station 19''' is comprised downstream of the fourth decoration sub-station 19''' and it is equipped with a rotating brush 24''' placed horizontally above the bar 2 to be decorated.
  • the number of decoration sub-stations, their mutual distance, type, and the number and arrangement of the decoration tools employed can obviously vary for the same application or for different applications.
  • the decoration sub-stations 19, 19', 19", 19''', 19''' are capable of decorating at least two of the four faces of a bar 2 in just one step.
  • the other two faces of the bar 2, among which the one resting on the sliding and drive rollers 50, can be decorated, if necessary, in a subsequent step in an additional treatment station found in a cascade arrangement with respect to the third treatment station 5 and that is similar to the latter station.
  • the primer can consist of a monocomponent or bicomponent water- or solvent-based acrylic or polyurethane liquid paint.
  • the refinishing paint preferably has the following formulation:
  • the formulation of the finish paint may vary based on the colour tones, the tools to be used, the type of effect to be produced and ambient temperature.
  • the transparent acrylic paint can have a matte, semi-matte, or semi-gloss finish, as a function of the desired level of sheen.
  • the programmable logic controller acquires in the memory a series of types of bars 2 identified at least from the constituent material, the shape and dimensions of the bars 2, and a set of treatment procedures for each type of bar 2.
  • the programmable logic controller After having received as input from the operator the type of bar to be treated, the number of bars to be treated and the treatment procedure, the programmable logic controller selects the plant operating parameters that correspond to the input.
  • the programmable logic controller automatically sets the position in height of the sliding and drive rollers 50, the conveying speed for the bars 2 by means of a specific activation command to activate the motor for the drive rollers 50, the angular operating position of the individual decoration tools 24, 24', 24'', 24'' by means of a specific activation command for rotation of the annular frames 22, 22', 22'', 22''' by a certain amount, the radial operating position of the decoration tools 24, 24', 24", 24''' by means of a specific activation command for protraction or retraction of the supports 23, 23', 23", 23''' by a certain amount, the speed and the amplitude of oscillation of the oscillating decoration tools by means of a specific activation command to activate the respective motor, and the speed of rotation of the rotating tools by means of a specific activation command to activate the respective motor.
  • Some adjustments for example adjustment of the distance between the external frames 32, 32', 32", 32''' and fine adjustment of the position of the blocks along the circumference of the annular frames can possibly be made manually as an initial step.
  • the bars 2 are arranged in single file moving along a horizontal path passing through the centre of the annular frames 22, 22', 22", 22''' and they are then treated one at a time in succession.
  • the first treatment station is preferably separate and operates independently in that it is thus possible to have the bars 2 remain in the static oven for a time period that can be set as desired without negatively influencing the productivity of the treatment stations downstream, which are instead preferably connected and operate in line.
  • the rotatable annular frame as shown is monolithic but in a different embodiment of the invention its structure may be fragmented into a plurality of independent and separated sections.
  • annular frame shall be so configured to drive into rotation all sectors independently to each other.
  • frame sectors may be moved around the same rotational axis with same or even opposite sense of rotation.
  • Each annular frame section may support one or more corresponding decoration tools so that the angular mutual position among decoration tools may be automatically varied according to the needs.
  • Such an improved automation allows in turn a better flexibility of use of the plant which, in order to apply a same kind of decoration to longitudinal bars differing by size and shape, may only be subjected to an automatic adjustement of the set up with no need of manual intervention of an operator.
  • the materials used, as well as the dimensions, may in practice be of any type, according to needs and the state of the art.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Fertilizers (AREA)
EP16781320.3A 2015-10-21 2016-10-04 Treatment plant for treating longitudinal bars Active EP3448583B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SI201630968T SI3448583T1 (sl) 2015-10-21 2016-10-04 Naprava za obdelavo vzdolžnih palic
RS20201324A RS61110B1 (sr) 2015-10-21 2016-10-04 Postrojenje za obradu za obrađivanje uzdužnih šipki
HRP20201773TT HRP20201773T1 (hr) 2015-10-21 2020-11-03 Postrojenje za obradu za obrađivanje uzdužnih šipki

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITUB2015A004741A ITUB20154741A1 (it) 2015-10-21 2015-10-21 Impianto di trattamento di barre longitudinali
PCT/EP2016/073610 WO2017067779A1 (en) 2015-10-21 2016-10-04 Treatment plant for treating longitudinal bars

Publications (2)

Publication Number Publication Date
EP3448583A1 EP3448583A1 (en) 2019-03-06
EP3448583B1 true EP3448583B1 (en) 2020-08-05

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EP16781320.3A Active EP3448583B1 (en) 2015-10-21 2016-10-04 Treatment plant for treating longitudinal bars

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EP (1) EP3448583B1 (it)
HR (1) HRP20201773T1 (it)
HU (1) HUE051546T2 (it)
IT (1) ITUB20154741A1 (it)
LT (1) LT3448583T (it)
RS (1) RS61110B1 (it)
SI (1) SI3448583T1 (it)
WO (1) WO2017067779A1 (it)

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KR102508505B1 (ko) * 2018-08-27 2023-03-09 삼성전자주식회사 플라즈마 모니터링 장치 및 플라즈마 처리 시스템
CN109759293B (zh) * 2019-02-21 2020-07-03 嘉兴海发家具有限公司 一种椅架表面喷塑系统
IT201900003825A1 (it) 2019-03-15 2020-09-15 Salvatore Persano Apparecchiatura di trattamento superficiale di barre.
CN112024250A (zh) * 2020-09-09 2020-12-04 李三红 一种钢结构上漆装置及其使用方法
CN112756170B (zh) * 2020-12-30 2021-12-07 聊城九洲建设集团有限公司 一种建筑装饰工程用管件的环保式往复喷漆装置
CN113600398B (zh) * 2021-07-07 2022-10-04 深圳市基斯特科技有限公司 一种手机外壳表面处理设备
CN114130589A (zh) * 2021-12-08 2022-03-04 中国建筑第五工程局有限公司 一种钢结构表面防护用除锈、喷漆一体化设备
CN117206111B (zh) * 2023-11-08 2024-01-16 江苏奥睿智能家居有限公司 一种沙发金属配件处理设备

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US2193971A (en) * 1938-08-08 1940-03-19 W K M Company Inc Pipe coating device
US5136969A (en) * 1991-01-25 1992-08-11 Cups, Inc. Modularized machine for reconditioning pipelines
GB2280391A (en) * 1993-07-31 1995-02-01 Valpar Ind Ltd Coating pipes, cables or hoses
US20070082180A1 (en) * 2005-10-10 2007-04-12 King Daniel W System and method for making decorative building panels having a variegated appearance
ITUD20080120A1 (it) * 2008-05-26 2009-11-27 Delle Vedove Levigatrici S P A Macchina e procedimento di rifinitura per profilati in materiale legnoso, o succedaneo al legno

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Also Published As

Publication number Publication date
HRP20201773T1 (hr) 2020-12-25
WO2017067779A1 (en) 2017-04-27
HUE051546T2 (hu) 2021-03-01
SI3448583T1 (sl) 2021-03-31
EP3448583A1 (en) 2019-03-06
ITUB20154741A1 (it) 2017-04-21
RS61110B1 (sr) 2020-12-31
LT3448583T (lt) 2021-01-25

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