EP2312056A2 - Device for producing marking lines composed of several individual marking material portions - Google Patents

Abstract

The device (1) has a jet assembly with multiple discharge nozzles (18), from which the marker material portions are poured off with the help of compressed air impact. The individual discharge nozzles are arranged individually in the nozzle arrangement and the nozzle elements (17) are detachable from the nozzle arrangement.

Description

The invention relates to a device for producing marking lines consisting of many individual marking material portions, wherein the marking material portions are ejectable from a nozzle arrangement connected to a marking material source with a plurality of dispensing nozzles arranged side by side transversely to a direction of movement of the device by means of compressed air blasts.

Such a device generates marking lines consisting of rows of small marking material portions of usually two-component marking material, for example on roads. The marking material portions are applied to a nozzle beam apparatus known in the art, which is equipped with a series of nozzles arranged transversely to the direction of movement of the apparatus, which are filled from a marking material source via feed channels with the mixed bi-component marking material and at regular intervals Help from supplied via another channel opening into the nozzle channel compressed air blasts in the direction of the surface to be coated, such as road surface, be emptied. Upstream of the nozzle bar of the device is a mixing device to which the two marking material components are supplied, which form a chemically reacting, namely curing mixture during and after the flow through the mixer, which therefore have only a limited residence time in the system until discharge from the nozzles may. The residence time is usually between 5 and 15 minutes, depending on the type of marking material and the mixing ratio set.

From the DE 103 61 531 A1 Further devices are known for producing marking lines consisting of a plurality of elements of highly viscous marking material on a surface to be marked, in particular a road surface. A first device has a housing bottom provided with outlet openings and a single or a plurality of slides which are displaceable relative to the housing bottom and which periodically change the outlet cross-sections of the outlet openings as the device moves relative to the surface. A second device has a hollow cylinder rotatably drivable in the interior of a housing chamber provided with a passage opening in a housing wall and provided with passages in the cylinder jacket, with its cylinder jacket slidably adjacent to two passage opening edges.

The known devices have a number of disadvantages. One of the disadvantages is that the distance of the marking material portions transversely to the longitudinal direction of the marking line is unchangeable.

The desirability of the width of the marking line and the diameter of the individual heaps varies between the individual clients for such lines. Frequently, the lines of marking material portions are applied to previously applied sprayed flat lines of paint, and often no protrusion of the marking material portions over the edges of these lines is tolerated. On the other hand, the full width of the previously applied line for the subsequently applied Markierungsmaterialportionen should be exploited to the edges. However, if a change in the material content of the individual marking material portions is desired, this usually also involves a change in their height and diameter, and thus the overall width of the marking material portion marking lines also changes due to the change in the diameter of the outer marking material portion rows. The way out of this problem would be a slight change in the nozzle spacing, but this is a costly and expensive way out in terms of time and cost in the known devices, since this means the production of a new nozzle bar or a new housing bottom and slide or a new hollow cylinder. In order to meet different wishes, it often requires the provision of several device parts, such as a plurality of nozzle bars or a plurality of housing bases and slide or more hollow cylinder with slightly different nozzle or Auslassöffnungsabständen. Also, different line widths that require different nozzle bar or housing bottom or hollow cylinder lengths with a different number of nozzles or outlet openings, make the production of different corresponding device parts required. In addition, there are different wishes of the clients in the transverse distances of the marking material portions. All this leads to an almost unmanageable variety of nozzle bars to be produced or other corresponding device parts, which makes a storage little sense and therefore leads to expensive and time-consuming individual production in the current case of need.

Another drawback is the large amount of detergent used in eliminating clogging of individual nozzles during a marker insert and in cleaning the device after a marker insert has been completed.

In devices with many nozzles connected in parallel and supplied by only one marker material source, the likelihood that the marking process must be interrupted due to clogging of one of the many nozzles and the entire system must be freed from reacting marker material mixture by solvent rinse is relatively large. The risk of clogging of one or more nozzles due to incipient hardening of the marking material is also great in a nozzle system in that there is no appreciable clogging of the marking material as clogging begins because the marking material makes its way through the other unclogged nozzles , A hindrance to achieving a high average speed of the marking process is that a blockage must always be eliminated immediately, otherwise curing of the marking material will occur at the blockage site up to its final hardness. The marking material can then be eliminated only mechanically, in the worst case by drilling.

The rinsing procedure is very time-consuming, because from the entire system the marking material in mixture and thus in a curing reaction has to be rinsed out, which requires a large amount of rinsing agent at a high flow rate. Detergents are expensive and polluting and must be collected below the nozzles and disposed of as hazardous. When rinsing one is confronted with the same disadvantage of the nozzle system, which includes the Inclination of the system favored clogging of nozzles. The flushing agent seeks the easy path through the unclogged nozzles and often flushes the clogged nozzles and thus often eliminates clogging.

In the above-mentioned, known from the relevant practice device the nozzle beam is preceded by a provided with a Markierungsmaterialkanal distributor from which each nozzle of the nozzle beam is supplied via a separate line with marking material. In each line a commercial ball valve is arranged, with which the connection between the material distributor and nozzle can be interrupted. Although ball valves have the important advantage of the straight passage in the open position for the marking material in reaction, in the blocking position, marking material trapped in the ball bore and between the seals hardens and renders the cock useless. In addition, a commercial ball valve needs a supply and a derivative. After flushing the device, ie after removal of the marking material mixture from the device, marking material mixture from the distribution channel penetrates into the supply line as soon as it is restarted and cures after a short time. Ball valves are therefore unsuitable because of their principle of operation and especially in the aforementioned arrangement as a selection valve for switching on and off the marking material supply for the individual nozzles. The ball valves arranged in the known device in the marking material lines to the nozzles are only suitable for flushing the system for the complete flushing of all nozzles, the flushing process starts with all taps on passage and successively those cocks are closed, from the connected Nozzle clean detergent emerges. The nozzles together with their supply lines can thus be rinsed one after the other in the order of their resistance opposite to the detergent. In each case the remaining not flushed nozzles then acts in each case the entire available detergent pressure and that while until each of the least of the remaining resistances is overcome and after the flushing of the respective nozzle her upstream ball valve can be closed.

However, if the mixture of marking material in the clogged nozzle has already hardened, this flushing process will no longer help. Then the nozzle must be mechanical, z. B. with the aid of tools, are freed from the blockage.

After removing a blockage but the device is far from ready to start again. To resume work, the device must again be completely filled with marking material mixture in the correct mixture starting from the mixing device to the nozzles, which is usually required to achieve the correct mixture, a more or less large initial amount in a drip tray ,

For the invention, therefore, the object is to provide a device which avoids one or more of the above-mentioned disadvantages of the known devices and with which, individually or in combination with each other, in particular a high readiness to deliver, easy adaptability of the distances of the marking material for the individual case of need and an adjustment of the distances of the marking material portions by the operators of the device on site and the rapid provision of necessary for the various line widths device parts can be achieved.

The solution of this object is achieved according to the invention with a device of the type mentioned above, which is characterized in that the individual discharge nozzles are individually attachable to the nozzle assembly and removable from the nozzle assembly nozzle elements.

With the invention, a variable and also on the spot in the marker insert variable nozzle arrangement is provided which allows easy and quick adaptation to different requirements in the production of different marking lines from a plurality of marking material portions.

In order to be able to easily change the lateral spacing of the marking material portions within the marking lines, it is further provided that the individual nozzle elements can be assembled with a variable lateral distance from each other relative to the nozzle arrangement.

A first related embodiment proposes that the individual nozzle elements with variable lateral distance from each other on a common

Mount attached or attachable. The common, continuous support, e.g. a beam-shaped profile, carries the individual nozzle elements, which allows a simple and stable construction.

An alternative embodiment provides that each nozzle element is selectively replaceable associated with an individual support member which is expandable with a desired distance to adjacent support members forming spacers to a support beam. In this way, a beam of a variable number of variably spaced from one another attachable, each having a nozzle member holding elements is formed. In this case, the nozzle elements and the support elements can be efficiently produced and kept in large numbers. In the case of a clogged nozzle, the nozzle element in question, without a cumbersome rinsing procedure is necessary, replace within a few seconds against a non-clogged nozzle member and perform the clogged nozzle member in due course a separate cleaning with very low detergent consumption. As a result, it is possible to effectively reduce both the time required for flushing operations and the consumption of flushing agent in the case of nozzle clogging

The spacers are preferably formed by spacers, whereby they are simple and inexpensive to manufacture.

Preferably, it is further provided that the support members and the spacers each have a material passage channel, that the support members also each have an approximately perpendicular to the material passageway extending, branching off this first Materialaustragkanalabschnitt and that the support members lined up with the spacers against each other by a clamping device to the support beam can be braced and form a formed by the aligned material passage channels, outwardly dense material supply channel for the nozzle elements. Thus, the supply of the nozzles with the marking material is greatly simplified, because now no longer an individual external supply line is required for each nozzle.

In the simplest case, the clamping device comprising all the nozzle elements to form a nozzle bar can be formed by one or two tension rods. on which the corresponding holes having nozzle elements are pushed. Spacers can be arranged between the nozzle elements. About the thickness and number of the distance between the nozzle elements and thus the nozzle spacing can be adjusted or changed. The bracing can then be done for example by end screwed onto the tie rods clamping nuts.

When dispensing with the variability of the lateral distances of the nozzles to each other, the individual nozzle elements with an unchangeable lateral distance to one another on a common holder can be releasably attached or attached. To change the distance of the nozzles from each other here different brackets can be used.

In order to be able to dispense with individual supply lines to all nozzle elements in the aforementioned embodiment of the device, is provided in a further embodiment, that the common holder has a continuous material supply channel and per nozzle member each extending approximately perpendicular to the material supply channel, branching off from this first material discharge channel.

It is also possible, if one does not want to dispense with the advantage of variable nozzle distances, to assign a holding element to each nozzle element, which in turn can be fastened variably to the adjacent holding elements on a common holder. The common support may e.g. be a bar-shaped profile to which the support members are attachable. Alternatively, the common holder can also be formed by one or two rods connecting all the holding elements, onto which the holding elements having corresponding bores with interposed spacers are pushed. With the thickness or number of spacers, the distance between the support elements can be adjusted as needed or changed.

Furthermore, the invention proposes that each nozzle element has a second material discharge channel section which can be selectively brought into and out of flow communication with the first material discharge channel section in the associated holding element or in the common holder. Thus, both the marking process as well as during the flushing process nozzles are switched on and off.

In a further embodiment, it is provided that each nozzle member is displaceable or rotatable relative to the associated support member or to the common support, that the first Materialaustragkanalabschnitt and the second Materialaustragkanalabschnitt relative to each other can be selectively brought into and out of coverage, with brought in coverage Materialaustragkanalabschnitten a Passage is released and with out of dispensed Materialaustragkanalabschnitten the passage is completely blocked. In this way one obtains technically very easy on-off valve function for the rinsing procedure described above with the successive blocking of the connection to the individual, already purged nozzles.

In order to enable a desired quick and easy, in particular tool-free change of the nozzle elements, it is preferably provided that each nozzle element can be pressed by at least one retaining spring to the associated support member or to the common support and thus easily releasably halterbar.

The support is advantageously supported by a positive connection between the nozzle element on the one hand and the associated support member or the common support on the other. For this purpose, the invention provides that each nozzle element on the one hand and each associated support member or the common support on the other hand are equipped with cooperating positioning means and / or guide means. Thus, it is ensured with little effort that the nozzle member on the one hand and the associated support member or the common support on the other hand assume their desired position or desired positions relative to each other safely and maintained during operation of the device, but if necessary also slightly relative to each other are adjustable.

As described above, the marking material portions of the individual discharge nozzles are ejected by means of compressed air surges. In this context, it is preferably provided that each nozzle element for supplying the compressed air surges into the discharge nozzle has an air duct which is inserted directly through the nozzle element or through a nozzle element, preferably releasably inserted Air channel body runs. The first alternative is manufacturing technology particularly simple. In the second alternative, an on-demand replacement of the compressed air duct can be achieved by simply replacing the air duct body without the need to replace the entire nozzle member.

A further embodiment proposes that the compressed air duct is extended in a tubular manner into the discharge nozzle. With this design of the compressed air channel, an undesired penetration of marking material from the discharge nozzle into the compressed air channel is prevented when no more compressed air surges are triggered, but a rest of marking material still flows into the discharge nozzle.

Fig. 1

eine aus dem Stand der Technik bekannte Vorrichtung im Querschnitt, zusammen mit einer aus einzelnen Markierungsmaterialportionen gebil- deten Markierungslinie in Seitenansicht und in Draufsicht,

Fig. 2

die Vorrichtung nach dem Stand der Technik aus Fig. 1 in Draufsicht,

Fig. 3

ein erstes Beispiel einer erfindungsgemäßen Vorrichtung im Querschnitt,

Fig. 4

die Vorrichtung aus Fig. 3 in Draufsicht,

Fig. 5

die Vorrichtung aus Fig. 3 und Fig. 4 in Ansicht gemäß dem Pfeil V in Fig. 3,

Fig. 6

ein zweites Beispiel der erfindungsgemäßen Vorrichtung in einem ersten Betriebszustand, im Querschnitt,

Fig. 7

die Vorrichtung aus Fig. 6 in einem zweiten Betriebszustand, im Quer- schnitt,

Fig. 8

die Vorrichtung aus Fig. 6 in Draufsicht,

Fig. 9

die Vorrichtung aus Fig. 6 bis Fig. 8 in Seitenansicht gemäß dem Pfeil IX in Fig. 7,

Fig. 10

ein drittes Beispiel der erfindungsgemäßen Vorrichtung in einem ersten Betriebszustand, im Querschnitt,

Fig. 11

die Vorrichtung aus Fig. 10 in einem zweiten Betriebszustand, im Quer- schnitt,

Fig. 12

die Vorrichtung aus Fig. 10 in Draufsicht,

Fig. 13

die Vorrichtung aus Fig. 10 bis Fig. 12 in Seitenansicht gemäß dem Pfeil XIII in Fig. 10,

Fig. 14

ein viertes Beispiel der erfindungsgemäßen Vorrichtung in einem ersten Betriebszustand, im Querschnitt,

Fig. 15

die Vorrichtung aus Fig. 14 in einem zweiten Betriebszustand, im Quer- schnitt,

Fig. 16

die Vorrichtung aus Fig. 14 in Draufsicht,

Fig. 17

die Vorrichtung aus Fig. 14 bis Fig. 16 in Seitenansicht gemäß dem Pfeil XVII in Fig. 14,

Fig. 18

ein fünftes Beispiel der erfindungsgemäßen Vorrichtung im Querschnitt,

Fig. 19

die Vorrichtung aus Fig. 18 in Draufsicht,

Fig. 20

die Vorrichtung aus Fig. 18 und Fig. 19 in Ansicht gemäß dem Pfeil XX in Fig. 18, und

Fig. 21

ein sechstes Beispiel der erfindungsgemäßen Vorrichtung im Quer- schnitt.

Hereinafter, a device according to the prior art and embodiments of the device according to the invention will be described with reference to a drawing. The figures of the drawing show:

Fig. 1

a device known from the prior art in cross-section, together with a marker line formed from individual marking material portions in side view and in plan view,

Fig. 2

the device according to the prior art Fig. 1 in plan view,

Fig. 3

a first example of a device according to the invention in cross-section,

Fig. 4

the device off Fig. 3 in plan view,

Fig. 5

the device off FIG. 3 and FIG. 4 in view according to the arrow V in Fig. 3 .

Fig. 6

A second example of the device according to the invention in a first operating state, in cross section,

Fig. 7

the device off Fig. 6 in a second operating state, in cross-section,

Fig. 8

the device off Fig. 6 in plan view,

Fig. 9

the device off Fig. 6 to Fig. 8 in side view according to the arrow IX in Fig. 7 .

Fig. 10

A third example of the device according to the invention in a first operating state, in cross-section,

Fig. 11

the device off Fig. 10 in a second operating state, in cross-section,

Fig. 12

the device off Fig. 10 in plan view,

Fig. 13

the device off 10 to FIG. 12 in side view according to the arrow XIII in Fig. 10 .

Fig. 14

A fourth example of the device according to the invention in a first operating state, in cross section,

Fig. 15

the device off Fig. 14 in a second operating state, in cross-section,

Fig. 16

the device off Fig. 14 in plan view,

Fig. 17

the device off FIGS. 14 to 16 in side view according to the arrow XVII in Fig. 14 .

Fig. 18

a fifth example of the device according to the invention in cross-section,

Fig. 19

the device off Fig. 18 in plan view,

Fig. 20

the device off FIGS. 18 and 19 in view according to the arrow XX in Fig. 18 , and

Fig. 21

a sixth example of the device according to the invention in cross-section.

The Fig. 1 and the Fig. 2 The drawing shows in cross-section and in plan view of a known from the prior art device 1 'for generating consisting of many individual marking material portions 11 marking lines 10. In the illustrated known device 1', the connection between a marking material channel 2 'having manifold 2 to a nozzle bar 3 made by flexible lines 4 and 5. Between the lines 4 and 5 is in each case a break valve 6, usually in the form of a ball valve.

The components of a two-component marking material flow through a (not shown) mixing device and enter as a curing reaction mixture in the marking material channel 2 'in the arrow direction and flow from there via the lines 4 and 5 in the nozzle 7 of the nozzle beam. 3

At regular intervals, the constantly forming in the nozzles 7 marking material filling is expelled by compressed air lines 8 supplied compressed air surges. By a certain timing of the compressed air surges, the marking line 10 consisting of a plurality of marking material portions 11 is formed.

The Fig. 3 to Fig. 21 The drawing shows various embodiments of devices according to the invention 1. In this case, the same parts of the device 1 in the FIGS. 3 to 21 provided with the same reference numerals, so not all reference numerals in each drawing figure must be rewritten.

In FIG. 3 to FIG. 5 a first example of the device 1 is shown. It has a continuous support 15, for example, a rectangular profile made of steel or aluminum, which is seen in its longitudinal direction provided at regular intervals with upstanding pin 16. On the pin 16 individual nozzle elements 17, each with a bore 16 'easily interchangeable and attached with fixed distances from each other. To change the distances of the nozzle elements 17 from each other, the holder 15 can be designed to be interchangeable, with different holders 15 different distances and / or different numbers of pins 16 have.

Each nozzle element 17 has an individual marking material supply line 23, which continues in the interior of the nozzle element 17 as a channel 25 as far as a downwardly pointing discharge nozzle 18. Each have their own compressed air line 19 'and this in the nozzle member 17 continuing compressed air channel 19 each discharge nozzle 18 are controlled from above supplied compressed air surges, each eject a Markierungsmaterialportion 11 from the discharge nozzle 18 on the substrate to be marked, such as road.

In FIG. 6 to FIG. 9 a second example of the device 1 is shown. This device 1 again has a continuous holder 15, to which side by side nozzle elements 17 by means of a respective retaining spring 26 releasably and vertically displaceable, but with fixed distances from each other, are clamped.

The marking material is supplied to the individual nozzle elements 17 here via individual supply lines 23 and, after flowing through each of a first material discharge channel section 24, arrives in the holder 15 in the in Fig. 6 congruent to this subsequent second Materialaustragkanalabschnitt 25 of the pressed against the holder 15 by the retaining spring 26 nozzle member 17 and through this second Materialaustragkanalabschnitt 25 then to the discharge nozzle 18th

By moving the nozzle member 17 in an upper, in Fig. 7 As shown, the two Materialaustragkanalabschnitte 24 and 25 are offset from each other and made to coincide, that the transition from a Materialaustragkanalabschnitt 24 to the other Materialaustragkanalabschnitt 25 is completely interrupted.

The force of the retaining spring 26 is chosen so that the pressure of the marking material in the Materialaustragkanalabschnitten 24 and 25 is not able to remove the nozzle member 17 to form a gap from the holder 15.

To guide the nozzle elements 17 during the displacement are formed on the continuous support 15 integrally formed in 6 and 7 shown in dashed lines and in Fig. 8 visible supernatants 28 between the nozzle elements 17. By further guide means in the form of a nose 27 per nozzle member 17 on the holder 15 and Depending on an associated groove 27 'on each nozzle member 17 of the displacement path is predetermined and limited to the necessary extent.

The nozzle elements 17 are here easily replaceable and take over in cooperation with the holder 15, the function for releasing and interrupting from Markierungsmaterial- or detergent supply to the individual discharge nozzles 18th

In 10 to FIG. 13 a third example of the device 1 is shown. This device 1 also has a continuous holder 15, on the side by side nozzle elements 17 are mounted releasably and vertically displaceable by means of a respective retaining spring 26. Here, the holder 15 has a continuous material supply channel 30 extending in its longitudinal direction and branching off approximately perpendicularly from this material supply channel 30 per nozzle element 17, each having a first material discharge channel section 24.

In the in Fig. 10 shown position of the nozzle member 17 is the first Materialaustragkanalabschnitt 24 each at the interface to the clamped on the holder 15 nozzle member 17 congruent into a second Materialaustragkanalabschnitt 25 in this nozzle member 17 via. From the second material discharge channel section 25, the marking material reaches the discharge nozzle 18.

By moving the nozzle member 17 relative to the bracket 15 in an upper, in Fig. 11 shown position, the two Materialaustragkanalabschnitte 24 and 25 offset from each other so that they get out of coverage and thus the transition from one material discharge channel section 24 to the other material discharge channel 25 is completely interrupted. To guide the nozzle elements 17 during this displacement are projections 28 of the holder 15. A Verschiebungswegbegrenzung effect each have a nose 27 on the holder 15 and a cooperating, elongated groove 27 'on the nozzle member 17th

About the front ends of the holder 15, the marking material is fed to the material supply passage 30 via a respective only partially shown common supply line 23 '. In this case, alternatively, the one supply line 23 'for supplying the marking material and the other supply line 23' serve for supplying rinsing liquid.

The compressed air supply also takes place here by means of individual compressed air lines 19 'and a compressed air channel 19 per nozzle unit 17 to each discharge nozzle 18th

In FIGS. 14 to 17 a fourth example of the device 1 is shown. This device 1 has a number of support members 20 which are pushed with corresponding holes on two tie rods 21. The desired distance of the support members 20 to each other is here with intermediate spacers 22, here spacers set. At each support member 20, a nozzle member 17 is detachably arranged, here again clamped by means of a respective retaining spring 26.

By clamped on the tie rods 21 end clamping nuts 21 ', the support members 20 and the intermediate spacers 22 against each other to form a composite in the form of a support beam 15' braced.

In this embodiment of the device 1, one obtains both the desired variable adjustability of the nozzle spacing in the transverse direction of the marking line and easy exchangeability of the nozzle elements 17.

The marking material is supplied to the individual support elements 20 here via individual supply lines 23 and, after flowing through a first material discharge channel section 24 in the support element 20, enters the in Fig. 14 congruent to this subsequent second Materialaustragkanalabschnitt 25 of the nozzle member 17 and through this second Materialaustragkanalabschnitt 25 to the discharge nozzle 18th

By sufficiently far displacement of the nozzle member 17 in an upper, in Fig. 15 As shown, the two Materialaustragkanalabschnitte 24 and 25 are offset from each other so that the transition from one material discharge passage 24 to the other material discharge passage 25 is completely interrupted.

Out FIGS. 14, 15 and 16 It can be seen that the spacers 22 used for adjusting the nozzle spacing between the holding elements 20 have a projection 28 protruding beyond the holding elements 20, which extends laterally Guiding the nozzle elements 17 during their displacement relative to the support members 20 is used.

In FIGS. 18 to 20 A fifth example of the device 1 is shown. The support members 20 and spacers 22 here each have a material passageway 29, for example in the form of a bore, and each approximately perpendicularly branching off from this material passageway 29 a first material discharge channel section 24.

In the position of the nozzle member 17 according to Fig. 18 the first Materialaustragkanalabschnitt 24 on the separation surface to the clamped nozzle member 17 in the second Materialaustragkanalabschnitt 25 of this nozzle member 17 via. From the in Fig. 18 As shown, each nozzle member 17 can be individually displaced upwardly to bring the Materialaustragkanalabschnitte 24 and 25 out of register, thus shutting off the passage.

By clamped on the tie rods 21 end nuts 21 ', the support members 20 and the intermediate spacers 22 against each other to a markierungsmaterial- and rinsing fluid-tight composite in the form of a support beam 15' braced. Strung together form the support members 20 and spacers 22 thereby from the material passageways 29 a continuous material supply channel 30 in the support bar 15 '.

The front ends of the support bar 15 'are formed by the two end pieces 32 and 33. Via at least one of the end pieces 32, 33, the marking material is fed to the material supply channel 30 through one or two supply lines 23 '.

At the in FIGS. 18 to 20 1, the distribution function of the material supply channel 30 with the function of mountable with variable distance support members 20 and with the blocking function for interrupting Markierungsmaterial- or detergent supply to the individual nozzle elements 17 is advantageous in space and Markierungsmaterialinhalt saving and thus detergent-saving manner compactly summarized.

In Fig. 21 a sixth and final example of the device 1 is shown. It again has a continuous holder 15, here for example an extruded aluminum. On the holder 15 individual nozzle elements 17 are placed easily replaceable side by side, one of which is visible in cross section. Each nozzle element 17 has an individual marking material supply line 23, which continues in the interior of the nozzle element 17 as a channel 25 as far as a downwardly pointing discharge nozzle 18. Each of its own compressed air duct 19 'and a downwardly continuing compressed air duct 19 each discharge nozzle 18 can be supplied controlled from above compressed air shocks to each eject a Markierungsmaterialportion 11 from the discharge nozzle 18 on the substrate to be marked, such as road.

Unlike in the previously described examples, the example follows Fig. 21 the compressed air channel 19 is not directly through the interior of the nozzle member 17, but by an air channel body 34, which is inserted as a separate item from above into the nozzle member 17, preferably releasably screwed is. Accordingly, here the compressed air line 19 'is connected to the upper end of the air duct body 34. An on-demand replacement of the compressed air channel 19, for example, in case of clogging or wear or to change the cross section of the compressed air channel 19, can be done by simply replacing the air channel body 34 without an exchange of the entire nozzle member 17 is necessary.

Furthermore, in the example Fig. 21 provided that the compressed air channel 19 is tubular in the discharge nozzle 18 extends into it. Here, the tubular lower part of the compressed air channel 19 projects so far into the discharge nozzle 18, that the free end of the compressed air channel 19 at the level of the mouth of the channel 25 is in the discharge nozzle 18. In this case, the outer diameter of the tubular part of the compressed air channel 19 in relation to the inner diameter of the discharge nozzle 18 is so small that the tubular part of the air channel 19 does not hinder the feeding of the marking material from the channel 25 into the discharge nozzle 18.

With this embodiment of the compressed air channel 19, penetration of marking material from the discharge nozzle 18 is prevented at the top in the compressed air channel 19 when no more compressed air surges are triggered, but still trailing a rest of marking material in the discharge nozzle 18. This ensures that Störunaen the device 1 passed through in the compressed air channel 19 and hardened therein Marking material, which would lead to a blockage of the compressed air channel 19 and thus to the inhibition of the marking material ejection, no longer occur. An elaborate cleaning of blocked compressed air channels 19 is thus virtually no longer necessary during operation of the device 1 and the productivity of the device 1 is improved.

LIST OF REFERENCE NUMBERS

character description 1, 1 ' contraption 2 manifold bar 2 ' Marking material channel in 2 3 nozzle beam 4 flexible line 5 flexible line 6 cut-off valve 7 jet 8th Compressed air line 9 underground 10 marking line 11 Marking material portions 12 Direction of movement of the device 15 common bracket 15 ' retention beam 16, 16 ' Positioning means (pin and bore) 17 nozzle elements 18 discharge nozzles 19 Compressed air duct 19.1 tubular extended part of 19 19 ' Compressed air line 20 support members 21, 21 ' Clamping device (tie rods and nuts) 22 spacers 23 individual supply lines 23 ' common supply line (s) 24 first material discharge channel section (in 15, 20) 25 second material discharge passage section (in FIG. 17) 26 retaining spring 27, 27 ' Guide means (nose, groove) 28 Got over 29 Fluid passageway (in 20) 30 Material supply channel (in 15, 15 ') 32, 33 End pieces (at 15 ') 34 Air duct body

Claims (14)

Device (1) for producing marking lines (10) consisting of many individual marking material portions (11), wherein the marking material portions (11) consist of a nozzle arrangement connected to a marking material source with a plurality of dispensing nozzles juxtaposed transversely to a direction of movement (12) of the device (1) (18) can be ejected by means of blasts of compressed air,
characterized,
in that the individual discharge nozzles (18) are located in nozzle elements (17) which can be attached individually to the nozzle arrangement and which can be removed from the nozzle arrangement. Apparatus according to claim 1, characterized in that the individual nozzle elements (17) with variable lateral distance from one another to the nozzle assembly are composable. Apparatus according to claim 2, characterized in that the individual nozzle elements (17) with a variable lateral distance from each other on a common support (15) are mounted or attachable. Apparatus according to claim 2, characterized in that each nozzle element (17) is selectively replaceable associated with an individual support member (20) which is with a desired distance to adjacent support members (20) forming spacers (22) to a support bar (15 ') expandable , Apparatus according to claim 4, characterized in that the spacers (22) are formed by spacer plates. Apparatus according to claim 4 or 5, characterized in that the support elements (20) and the spacers (22) each have a material passage channel (29) that the support elements (20) also each have an approximately perpendicular to the material passageway (29) extending, branching from this first Materialaustragkanalabschnitt (24) and that the support members (20) with the spacers (22) juxtaposed against each other by a Clamping means (21, 21 ') to the support bar (15') are braced and form a through the aligned material passage channels (29) formed, outwardly dense material supply channel (30) for the nozzle elements (17). Apparatus according to claim 1, characterized in that the individual nozzle elements (17) with an unchangeable lateral distance from each other on a common support (15) are mounted or attachable. Apparatus according to claim 7, characterized in that the common holder (15) has a longitudinally extending material supply channel (30) and per nozzle element (17) each approximately perpendicular to the material supply channel (30) extending, branching off from the first Materialaustragkanalabschnitt (24). having. Apparatus according to claim 6 or 8, characterized in that each nozzle member (17) has a second Materialaustragkanalabschnitt (25) with the first Materialaustragkanalabschnitt (24) in the associated support member (20) or in the common support (15) selectively in and out Flow connection can be brought. Apparatus according to claim 9, characterized in that each nozzle element (17) relative to the associated support member (20) or to the common support (15) is displaceable or rotatable, that the first Materialaustragkanalabschnitt (24) and the second Materialaustragkanalabschnitt (25) can be selectively brought into and out of coincidence relative to each other, wherein in passage brought Materialaustragkanalabschnitten (24 and 25) a passage is released and wherein out of coverage brought Materialaustragkanalabschnitten (24 and 25), the passage is completely blocked. Device according to one of claims 4 to 10, characterized in that each nozzle element (17) by at least one retaining spring (26) to the associated support member (20) or to the common support (15) is pressed. Apparatus according to claim 11, characterized in that each nozzle element (17) on the one hand and each associated support member (20) or the common support (15) on the other hand with cooperating positioning means (16, 16 ') and / or guide means (27, 27') equipped are. Device according to one of claims 1 to 12, characterized in that each nozzle element (17) for supplying the blast of compressed air into the discharge nozzle (18) has a compressed air channel (19) which passes directly through the nozzle element (17) or through a nozzle element (17). 17), preferably releasably, inserted air channel body (34) extends. Apparatus according to claim 13, characterized in that the compressed air channel (19) is tubular in the discharge nozzle (18) extended into it.

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