EP2425899A1 - Changeur de teinte - Google Patents

Changeur de teinte Download PDF

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Publication number
EP2425899A1
EP2425899A1 EP20100009212 EP10009212A EP2425899A1 EP 2425899 A1 EP2425899 A1 EP 2425899A1 EP 20100009212 EP20100009212 EP 20100009212 EP 10009212 A EP10009212 A EP 10009212A EP 2425899 A1 EP2425899 A1 EP 2425899A1
Authority
EP
European Patent Office
Prior art keywords
paint
valve
color
channel
color changer
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.)
Granted
Application number
EP20100009212
Other languages
German (de)
English (en)
Other versions
EP2425899B1 (fr
Inventor
Winfried Ott
Joachim Kunkel
Burkhard Bilz
Udo Klein
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.)
Lactec GmbH
Original Assignee
Lactec 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 Lactec GmbH filed Critical Lactec GmbH
Priority to EP20100009212 priority Critical patent/EP2425899B1/fr
Priority to US13/225,887 priority patent/US8636029B2/en
Publication of EP2425899A1 publication Critical patent/EP2425899A1/fr
Application granted granted Critical
Publication of EP2425899B1 publication Critical patent/EP2425899B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/14—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet
    • B05B12/149—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet characterised by colour change manifolds or valves therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/14—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87249—Multiple inlet with multiple outlet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87571—Multiple inlet with single outlet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87571—Multiple inlet with single outlet
    • Y10T137/87676—With flow control
    • Y10T137/87684—Valve in each inlet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/877—With flow control means for branched passages
    • Y10T137/87885—Sectional block structure

Definitions

  • the invention relates to a color changer having at least one valve block for connecting a plurality of coating material lines with an application device, wherein the valve block has a housing designed as a parallelepiped and wherein the housing has a central color channel with an axial direction and valve bores for receiving valves.
  • color changer or color changing devices which have a central color channel, which is connected to the application device, and having a plurality of ink supply lines, can be fed through the different paints of different colors to the color channel.
  • the supply of ink through these ink supply lines is usually controlled by - preferably pneumatically controllable - valves. These valve holes are provided in a valve block of the color changer, in which these valves can be used. When actuated, ie as required, the valves release the passage from the respective ink feed line to the central ink duct. In this way, in each case the color channel can be opened, through which the currently required paint is supplied. In many applications, a supply of paints with more than 10 or 20 different colors may be necessary be.
  • Such a color changer device or exchange unit for coating material is for example from EP 1 859 872 A2 known.
  • the central color channel Before each color change, the central color channel must be cleaned of residues of the previously used lacquer. In this way it is ensured that varnishes of different colors do not mix directly after the change, whereby the quality of the coating would be severely impaired.
  • the removed during the cleaning of the paint channel from the paint channel paint is effectively broke and thus lost paint that can not be used for painting.
  • the invention is therefore based on the object to provide a color changer, which is realized in a particularly compact design, so that the length of the central color channel can be kept as low as possible with a simultaneous supply of as many paint supply lines.
  • a first number of substantially parallel valve holes in the ink channel opens at first junctions
  • a second number of substantially parallel valve holes on the opposite side of the paint channel and offset in the axial direction to the first number of valve holes opens at second junctions in the color channel
  • a third number of substantially parallel valve holes in the color channel opens at third junctions, each with a first and a third confluence in the same axial position in the color channel
  • a fourth number of substantially parallel valve bores in the color channel opens at fourth junctions, each a fourth and a second confluence in the same axial position open into the color channel.
  • the invention is based on the consideration that an essential design criterion for the length of the central color channel is given by the spatial position and positioning of the valve holes for the pneumatically controllable valves.
  • these valves for example, as in the EP 1 859 872 A2 disclosed arranged in two opposite with respect to the central color channel rows, the length of the paint channel with each pair of valves, wherein the valves are arranged on respective opposite sides of the paint channel, respectively by at least the width of the valve bore.
  • color changer with 16 or more different color leads are difficult or impossible to realize because the color changing device is too long and too heavy.
  • the central ink channel would be so long that the lost in the cleaning amounts of paint would prohibit an economic use of such a color changer.
  • a compact housing with a short color channel can be realized by an optimized spatial arrangement of the valve holes around the paint channel.
  • An extremely compact design of the color changer can be achieved, in particular, by arranging valves not only in two groups lying on opposite sides of the color channel, all of these valves lying in one plane, for example, but also introducing further groups of valves to the color channel.
  • the first two groups of valve bores should be offset from each other in the axial direction of the paint channel. In this way, one of the other valve bores at the same axial position can always open into the paint channel like a valve bore of one of the first two groups.
  • the dimensioning of the color changer increases in a direction perpendicular to the axial direction of the color channel.
  • the length of the central ink channel is extended only slightly by the axial offset of one of the two groups relative to the other with respect to a design with only two arranged on opposite sides of the paint channel valve groups.
  • the first, second, third and fourth number of valve bores form valve bore rows, the first and the third, the second and the fourth, and the third and fourth valve bore rows forming an acute angle to one another.
  • row is meant that the valve holes are aligned parallel with respect to their central axis and the central axes are also in a common plane.
  • the acute angle should in each case be present between the corresponding central axes of the valve bores.
  • each two adjacent in-line valve bores are preferably always the same.
  • the minimum distance between two adjacent valve holes must meet several criteria. On the one hand, it should be as small as possible in order to minimize the length of the central color channel. On the other hand, the distance should be large enough to accommodate the valve actuation cylinders / pistons, whose diameter must be oriented to the commonly available 6 bar of compressed air, and to prevent paint leakage between different paint supply lines through the housing of the valve manifold.
  • valve holes must be accessible from the outside of the housing in order to use them in valves.
  • a very compact design of the color changer can be realized with a parallelepiped housing, wherein the first and the second valve holes on opposite parallelepiped surfaces exit the housing, and wherein the third and the fourth valve bores on a perpendicular to these cuboid surfaces square surface of the housing to step. That is, on two opposite parallelepiped surfaces occur half as many valve holes from the housing as on the perpendicular surface. For a good accessibility of the valve bores, it is advantageous if the valve bores occur at this area each near the edge of this surface of the housing.
  • the valve block has a total of 16 valve holes. Correspondingly many supply lines for paint are provided, so that it is possible to choose between 16 different colored paints.
  • four valve bores of the first, second, third and fourth numbers are advantageously provided in each case. These each form preferably Ventilbolrungs Herbertn.
  • the distance between the paint channel start and its end should be as small as possible.
  • the distance in the axial direction of the channel between Farbkanalterrorism and Farbkanalende is less than 120 mm.
  • the housing of the valve block advantageously has a plurality of supply openings for the supply of paint.
  • the color changer advantageously further comprises a paint connection plate, which has paint supply channels, which open into connections for paint supply lines.
  • the paint connection plate is preferably screwed to the housing of the valve block, wherein in the screwed state, the paint supply channels connected to the connections for paint supply lines are connected to the supply openings. In this way, all supply lines for paint can be separated by unscrewing the paint connection plate of the housing in a simple way and at the same time.
  • Each of the supply openings for the supply of paint in the housing is assigned in each case a valve bore. The respective set in the valve bore valve is required, the connection between the inlet opening and the central color channel free.
  • the paint terminal plate may include paint discharge pipe terminals, the paint discharge pipes and the paint supply pipes being connected to each other for circulating the paint.
  • the paint should circulate when the connection between paint supply line and paint channel is blocked.
  • check valves are advantageously arranged in the paint connection plate in the paint supply channels. Furthermore, it is advantageous to prevent the paint from running out of the paint connection plate during its disassembly from the valve block.
  • check valves may be arranged in the paint connection plate in the paint supply channels, which prevent this run out.
  • each check valves can be arranged in the paint supply channels, both a reflux of paint from the valve block in the respective paint supply line and a run out of the paint from the paint connection plate at her Disassemble disassembly of the valve block.
  • these check valves are designed as flutter valves.
  • a plurality of valve channels are advantageously provided in the housing of the valve block.
  • a valve channel is advantageously associated with a valve bore.
  • a drive plate may be provided, which has a plurality of connections for control channels for valves, wherein the drive plate is screwed to the housing of the valve block and wherein in the screwed state, the drive channels are connected to the valve channels.
  • pneumatically controllable valves are used in the valve bores, which are each connected via the valve channels with a common compressed gas line, wherein in the control plate solenoid valves are used, which release the connection between the common gas line and the respective control channels if necessary , and wherein a control unit electrically connected to the electrovalves for controlling the solenoid valves is provided.
  • the pressurized gas, by which the pneumatically controllable valves are controlled as needed, is thus guided in a common line to the valve channels.
  • the compressed gas line is advantageously connected to the control plate, so that the gas is passed through the compressed gas line in the control plate and is passed from there further through the control channels for valves in the valve channels.
  • solenoid valves are used in the control plate, which release the connection between the respective valve channel and the common compressed gas line, if necessary.
  • the control of the solenoid valves is carried out by a common control unit.
  • This control unit can be designed, for example, as a bus-capable microcontroller which communicates via a bus connection with a higher-level programmable logic controller.
  • Such a common supply of compressed gas simplifies the construction and installation of a color changer compared to conventional systems in which a separate compressed gas line must be set for each valve channel.
  • An inventive color changer in a preferred embodiment therefore has two valve blocks and a central block with an application line on, wherein the color channel of the respective valve block is guided in each case via a connecting line in the center block and is connected to the application line for connection to the application device, and wherein for each connecting line in each case a pneumatically controllable release valve is provided which the connection between the respective connecting line and the application line opens and disconnects.
  • a pneumatically controllable release valve is provided which the connection between the respective connecting line and the application line opens and disconnects.
  • connection to only one of the two valve blocks can be established by the pneumatically controllable release valve. Even with the now double the number of available paint colors is due to the construction with a center block to which the two valve blocks are respectively connected, the paint rejects not larger, since two separate color channels are provided. If the valve block had simply been extended, the color channel would have grown to twice its length.
  • a color changer can be realized in a compact design by the arrangement of four valve groups to a central color channel and in which the length of the central color channel can be kept as low as possible, so that the paint committee, the every time you change color, it can be kept as small as possible.
  • additional rejects can be avoided, both the run-off of paint during disassembly of the paint connection plate and the unwanted mixing of paint can be prevented in leakage within the valve block.
  • valve block 2 for a color changer has a cuboid housing 8. Between a front surface 14 and one of the front surface 14 opposite rear surface (not shown) extends a central ink channel 20.
  • a total of sixteen valve holes 26, 32, 38, 44 are inserted, can be used in the pneumatically controllable valves.
  • the housing 8 further sixteen supply openings for the supply of paint are embedded.
  • one supply opening 50 is in each case associated with a valve bore 26, 32, 38, 44.
  • the valve block 2 is designed to minimize the length of the central color channel between the front surface and the rear surface so as to minimize the paint scrap resulting from color changes.
  • the required compact design of the valve block 2 is made possible by a special arrangement of the valve holes 26, 32, 38, 44, which will be described below. Since the valve bores 26, 32, 38, 44 are significantly larger in length and diameter than the supply openings 50, they are significantly responsible for the dimensioning of the valve block 2 and thus also of the entire color changer.
  • valve holes 26 open into the central ink channel 20.
  • the valve holes 26 are arranged in a sense in a row or form a row. That is, the imaginary center axes of the holes are aligned parallel to each other and lie in one plane.
  • the central axes of the bores in each case abut on the central ink channel 20.
  • the center axes M continue to be perpendicular to the side surface 56.
  • the four valve bores 32 similar to the valve bores 26, form a row.
  • the center axes of the valve bores 32 and the center axes of the valve bores 26 are aligned parallel to each other. Furthermore, these central axes lie in one plane.
  • the axial positions at which the valve bores 26 open into the ink duct 20 are laterally offset with respect to the junctions of the valve bores 32.
  • valve holes 38, 44 A doubling of the number of valve holes over the previously described configuration with the same length of the central color channel is achieved by two more rows of valve holes 38, 44.
  • the central axes of the valve holes 38 form an acute angle to the central axes of the valve holes 26 and 32.
  • a fourth series of valve holes 44 is provided, whose center axes form an acute angle to the central axes of the valve bores 26 and 32.
  • the valve bores 44 open at the same axial positions in the paint channel 20 as the valve bores 32.
  • Axial position is here meant in each case the distance of the junction from that of the center of the central color channel on the front surface 14.
  • the valve bores 38 and 44 open on the one hand in the interior of the housing 8 in the paint channel 20, on the other hand, they adjoin the housing 8 on a surface 62 at.
  • valve bores 26, 32, 38, 44 are each connected to valve channels 68. Via the valve channels 68, the valves used in the valve bores 26, 32, 38, 44, a pressurized gas can be supplied, whereby these valves can be controlled pneumatically.
  • the valve block 2 off Fig. 1 is in Fig. 2 shown from another perspective.
  • the length of the central color channel 20 between the front surface 14 and the rear surface 72 is ⁇ 120 mm.
  • a color changer 80 in a preferred embodiment is shown in FIG Fig. 3 shown.
  • the color changer 80 comprises a valve block 2 according to the Fig. 1 and 2 Both the paint connection plate 92 and the drive plate 86 are screwed to the valve block 2 for easy assembly and disassembly.
  • the valve block 2 and the connection plates 86, 92 made of stainless steel or aluminum for stability reasons, but for reasons of weight reduction, but also a stable plastic can be used as a material.
  • check valves are used to prevent leakage of the paint when disassembling the paint connection plate. Additional check valves prevent contamination of reservoirs, from which the paint under pressure in the paint connection plate is guided by each Paint of a different color. Position and exact function of these valves are discussed below in connection with the Fig. 5 and 6 shown.
  • a color changer 80 in another preferred embodiment is shown in FIG Fig. 4 shown.
  • the color changer 80 has two valve blocks 2, between which a central block 112 is mounted.
  • Each of the two valve blocks 2 is in each case screwed to a control plate 86 and a paint connection plate 92.
  • the two central color channels 20 of the two valve blocks 2 each open into the center block 112, namely there in an application line (not shown).
  • In the middle block valve bores 120 are provided for at least 2 release valves, in which valves can be used, which allow the flow of the paint from one of the two central color channels 20 in the application line in the center block 112, if necessary.
  • a paint pressure regulator 130 is further connected, with which the output pressure of the paint can be adjusted to the atomizer, not shown here.
  • Fig. 5 shows a cross section through a color changer 80 with a valve block 2, a middle block 112, a drive plate 86 and a paint connection plate 92.
  • ports 136 are provided for compressed gas lines 142, through the valves in the valve bores 26, 32, 38, 44 used valves can be controlled pneumatically.
  • check valves 160 are inserted into the paint supply channels 154 between the paint supply lines 150 and the respective supply openings 50 in the valve block. The check valves 160 prevent the paint from leaking out of the paint terminal plate 92, which would otherwise occur because the paint supply lines 150 are under pressure. Paint removal during disassembly of the paint connection plate 92 can be avoided in this way.
  • a second group of check valves 170 are inserted into the paint supply channels 154, respectively. These check valves 170 prevent that in the case of a possibly present leakage of at least two valves in the valve block 2 of the color changer 80, the lacquer of one hue is not in the direction of the other hue can penetrate and can penetrate through the paint supply line 150 in the reservoir, whereby large amounts of paint would be unusable.
  • the functionality of both check valves 160 and 170 can also be realized with a single check valve. For this purpose, for example, a flutter valve can be used.
  • a section through a perspective view of the paint connection plate is further in Fig. 6 shown. Visible are the leading into the paint connection plate 92 paint supply lines 150 and the check valves 170 used.

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  • Spray Control Apparatus (AREA)
  • Valve Housings (AREA)
EP20100009212 2010-09-06 2010-09-06 Changeur de teinte Not-in-force EP2425899B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20100009212 EP2425899B1 (fr) 2010-09-06 2010-09-06 Changeur de teinte
US13/225,887 US8636029B2 (en) 2010-09-06 2011-09-06 Color changer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20100009212 EP2425899B1 (fr) 2010-09-06 2010-09-06 Changeur de teinte

Publications (2)

Publication Number Publication Date
EP2425899A1 true EP2425899A1 (fr) 2012-03-07
EP2425899B1 EP2425899B1 (fr) 2013-08-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20100009212 Not-in-force EP2425899B1 (fr) 2010-09-06 2010-09-06 Changeur de teinte

Country Status (2)

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US (1) US8636029B2 (fr)
EP (1) EP2425899B1 (fr)

Cited By (1)

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WO2015063295A1 (fr) * 2013-11-04 2015-05-07 Sames Technologies Dispositif d'alimentation d'un projecteur en produit de revetement liquide

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DE102010011064A1 (de) * 2010-03-11 2011-09-15 Dürr Systems GmbH Ventileinheit für eine Beschichtungsanlage
EP2633921B1 (fr) * 2012-03-02 2016-11-16 LacTec GmbH Installation de laquage alimentée par une pompe monopiston
CN114505189B (zh) * 2022-01-28 2022-12-02 山东交通学院 一种带有检测反馈的换色模组及喷涂设备

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EP1384518A2 (fr) * 2002-07-23 2004-01-28 Dürr Systems GmbH Procédé ainsi qu'ensemble de valves pour commander le changement de couleur dans une installation de revêtement
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015063295A1 (fr) * 2013-11-04 2015-05-07 Sames Technologies Dispositif d'alimentation d'un projecteur en produit de revetement liquide
FR3012865A1 (fr) * 2013-11-04 2015-05-08 Sames Technologies Dispositif d'alimentation d'un projecteur en produit de revetement liquide
CN105705250A (zh) * 2013-11-04 2016-06-22 萨姆斯技术公司 用于将液体涂覆产品供给喷涂器的装置
RU2656020C2 (ru) * 2013-11-04 2018-05-30 Саме Кремлин Устройство питания распылителя жидким материалом покрытия
RU2656020C9 (ru) * 2013-11-04 2018-07-24 Саме Кремлин Устройство питания распылителя жидким материалом покрытия
US10434533B2 (en) 2013-11-04 2019-10-08 Sames Kremlin Device for supplying a sprayer with a liquid coating product

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US20120055570A1 (en) 2012-03-08
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