DOSING SYSTEM

DE502020013525D1Active Publication Date: 2026-09-17RAMPF PRODUCTION SYSTEMS GMBH & CO KG
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Patent Information

Application Number
DE502020013525
Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
Priority Date
2019-08-19
Filing Date
2020-08-10
Publication Date
2026-09-17
Estimated Expiration
2040-08-10

AI Technical Summary

Technical Problem

Existing dispensing systems for multi-component composite materials face a contradiction between the need for rapid application along a predetermined path and maintaining a uniform cross-sectional area of the bead, as they are limited by system constraints that prevent uniform speed adjustments in sections with varying curvature.

Method used

A metering system with a control unit that dynamically adjusts the dosing rate based on trajectory information, using a mixing head with an active stirring element and metering pumps positioned close to the outlet, allowing for proportional adjustments in discharge rate and movement speed to maintain a constant cross-sectional area.

Benefits of technology

Enables rapid application of multi-component composite materials with a uniform cross-sectional area across varying curvatures, reducing processing time and eliminating dynamic losses due to material elasticity and compressibility.

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Description

[0001] The invention relates to a metering system for applying a bead of a multi-component composite material to a component.

[0002] When a bead of multi-component composite material is applied to a component, for example, to bond two components together, the bead of the composite material follows a path that typically includes sections with varying degrees of curvature. If the bead is applied in a substantially rectangular path, for instance, it will have four straight sections (i.e., sections with zero curvature) and four highly curved sections (e.g., in the shape of a circular arc). The components of the multi-component composite material are mixed in a mixing chamber of a mixing head and applied to the component through an outlet.

[0003] Existing dispensing systems are designed to achieve a uniform dispensing rate when applying a bead of multi-component composite material to a component. If a predetermined thickness of the bead of multi-component composite material—that is, a uniform cross-sectional area of ​​the bead—is desired at every point along the trajectory, the dispensing rate of the system must be adjusted to ensure the predetermined bead thickness is achieved at those points where the discharge opening, due to system limitations, traverses a section of the trajectory at a low speed. This is typically the case in sections with sharp curves, i.e., small radii of curvature, as a suitable drive cannot significantly accelerate the discharge opening in these areas.Conversely, due to the uniform dosing rate and the required bead thickness, the speed of movement of the exit opening is limited in the straight sections of the trajectory, so that the exit opening must be moved along the trajectory at essentially a uniform speed.

[0004] From WO 2019 / 142557 A1, which is considered the closest prior art, a metering system for applying an adhesive bead is known, comprising an outlet opening from which the adhesive emerges, a metering pump configured to deliver the adhesive through the outlet opening, and a control unit configured to vary the delivery rate of the adhesive through the outlet opening based on predetermined web speeds along corresponding sections of the entire trajectory of the adhesive bead to be applied. Reference is also made to documents US 2004 / 253365 A1, WO 92 / 15401 A1, WO 2006 / 118088 A1, US 2016 / 193621 A1, and US 5979794 A.

[0005] It is therefore evident that, in the known dosing systems, the requirement for rapid application of multi-component composite material along the predetermined path and the requirement for a uniform cross-section of the bead of multi-component composite material along the path are in irreconcilable contradiction.

[0006] In view of these disadvantages, the object of the present invention is to provide a dosing system which reduces the time required to apply a bead of multi-component composite material to a component.

[0007] According to a first aspect of the present invention, this problem is solved by a metering system for applying a bead of a multi-component composite material to a component according to claim 1.

[0008] The mixing of the components can take place "dynamically," that is, using an active stirring element; "statically," that is, by bringing the components together without the use of an active stirring element; or "static-dynamically," that is, by rotating an additional mixing helix through which at least one of the components enters the mixing chamber. In many applications, a dynamic mixing head may be preferred, as this allows for a reproducibly uniform mixing of the components with a minimal mixing volume.

[0009] The term "dosing rate" refers specifically to the ratio of the discharge quantity of the multi-component composite material to the discharge rate of the multi-component composite material from the outlet opening, or, in other words, a discharge quantity (e.g., in terms of volume and / or mass) per unit of time (e.g., per second). Thus, the same dosing rate can be achieved with a low discharge quantity and high discharge rate as with a high discharge quantity and low discharge rate. However, a dosing rate can be increased if at least one of the discharge quantity and discharge rate is kept constant while the other (or both) is increased.

[0010] Furthermore, it should be noted at this point that the "cross-sectional area" of the bead of the multi-component composite material is considered in a direction perpendicular to the application direction of the bead of the multi-component composite material onto a component. A uniform cross-sectional area does not necessarily require a uniform cross-sectional shape, but this can be advantageous.

[0011] Advantageously, the control unit can receive information regarding a trajectory and / or a trajectory speed as a function of the trajectory from a CNC controller, which is set up to control a drive that is set up to move the output opening along the trajectory.

[0012] When using two-component foams, it can be advantageous to activate (i.e., operate) the metering pump for the base component for a predetermined time, for example, 5 ms, before the metering pump for the hardener. This allows the delivery rate to be set and adjusted accordingly, based on the compressibility of the base component, should it contain gas.

[0013] The dosing system according to the invention makes it possible to achieve a highly dynamic adjustment of the dosage depending on the trajectory. Thus, the outlet opening can always be moved at the maximum speed for a given section of the trajectory or for a given curvature of the trajectory. The dosing system according to the invention makes it possible to proportionally increase the dosing rate in sections with higher outlet speeds and proportionally decrease it in sections with lower outlet speeds, so that the cross-sectional area of ​​the bead of the multi-component composite material remains essentially constant along the entire trajectory on which the multi-component composite material is applied.

[0014] By positioning the metering pump close to the mixing head's outlet, a significantly more dynamic, and therefore faster, adjustment of the metering rate is possible. For example, this can reduce or even eliminate dynamic losses caused by the elasticity of pipe walls or the compressibility of the multi-component composite material or its components. This dynamic adjustment of the metering rate is particularly effective when combined with highly dynamic control technology, which is designed to predict the feed rate, discharge quantity, and / or discharge velocity within a range of 1–128 ms and output corresponding control information to the metering pump.

[0015] The supply pump of the respective component can be operated continuously, at least during the application of the multi-component composite material, or can only be switched between one and the other. EIN- The system can be switched between a predetermined flow rate and an OFF state. Alternatively or additionally, the supply pumps can also be operated with speed control, ensuring that the pump inlet pressure at the metering pumps remains constant regardless of consumption. Therefore, the following description will primarily focus on controlling the metering pump, although the description can, of course, also be applied to controlling the supply pump.

[0016] In particular, the outlet opening of the mixing head can be designed as a section of the mixing chamber or connected to the mixing chamber via a pipe. This allows the mixing head to have an opening through which the multi-component composite material can be applied directly to the component. However, if, for example due to reduced accessibility to the component, it is desirable to position the mixing head further away from the component, the outlet opening can be connected via the pipe to an opening in the mixing head through which the multi-component composite material exits the mixing chamber.

[0017] The line between the outlet opening and the mixing chamber of the mixing head can be designed as a tube or as a hose. Particularly if the line is designed as a hose, it may be possible to move only the outlet opening of the hose along the path and not move the mixing head relative to the component, or at least not along a simplified path, for example, a circular or rectangular one.

[0018] Furthermore, the dosing system can be configured to move the outlet opening for applying the multi-component composite material at a speed of 1 m / min to 100 m / min, in particular from 3 m / min to 60 m / min. In this way, both sections with tight radii of curvature and sections with a straight path can be traversed at maximum speeds.

[0019] The control unit can be configured to output separate control information to the metering pump in separate control signals for each trajectory section with a uniform speed, and / or to output multiple control signals, each separate for a trajectory section with a uniform speed, to the metering pump in at least one control signal. In other words, the respective control information, which, for example, includes instructions for the metering pump regarding its operating power, can be output in a separate control signal each time the content of the control information changes, or a single control signal can contain multiple control signals. It can also be advantageous for the control information to include a period during which the metering pump is to operate at a predetermined power.

[0020] In particular, the trajectory, which encompasses varying speeds, can be formed as a closed ring. For example, the bead of the multi-component composite material can be applied along the edge of a component, such as a windshield, to bond it to a frame. Because the trajectory, i.e., the bead of the multi-component composite material, is formed as a closed ring, the ingress of liquid or foreign matter from outside the closed ring can be prevented. Of course, such a ring does not have to be circular, but can, for example, be approximately rectangular, consisting of a sequence of straight segments and arc segments.

[0021] Within the scope of the present invention, the multi-component composite material can comprise polyurethane or silicone. A typical example of this is a so-called FIPFG seal. In the case of a two-component material, two pump groups can be arranged accordingly. Thus, compared to the prior art, the present invention, by providing a "basic supply" of components to the mixing head with the supply pumps and a highly precise and rapid introduction of components into the mixing head with the metering pumps, makes it possible to apply foams with trajectory-dependent control, for example based on a CNC control, and with a constant cross-section.

[0022] Furthermore, the dosing system, in particular the dosing pump, can be configured to dispense the multi-component composite material in a capacity range of 0.1 cm³ / s to 20 cm³ / s. This makes it possible to apply sufficient multi-component composite material to the component even in sections of the trajectory where the discharge opening moves along the component at high speed, in order to ensure a uniform bead thickness of the multi-component composite material.

[0023] According to the present invention, the control unit is further configured to assign uniform control information to the metering pump for adjusting the discharge of the multi-component composite material to contiguous sections of the trajectory that have a constant curvature. Furthermore, the control unit can be configured to assign a uniform feed rate to contiguous sections of the trajectory that have a constant curvature. This reduces the processing effort required by the control unit. For example, a section that is shaped like a circular arc and therefore has a constant radius of curvature can be assigned a uniform feed rate for moving the outlet opening and thus a uniform metering output of the metering pump, which can be output to the metering pump as a control signal containing control information.For such continuous sections of the trajectory, an acceleration or deceleration of the outlet opening at the beginning or end of each continuous section can, of course, be taken into account. For this purpose, it is conceivable either to consider the acceleration or deceleration of the outlet opening as not belonging to the continuous section, or to represent corresponding accelerations and decelerations of the outlet opening analogously in the control information or instructions for the metering pump.

[0024] In a second aspect of the present invention, the present problem is solved by a method for uniformly applying a bead of a multi-component composite material to a component according to claim 10.

[0025] It should be noted at this point that all features, effects and advantages described in relation to the device according to the invention are also applicable to the method according to the invention, and vice versa.

[0026] In a further development, the method according to the invention can include the metering system being able to move the outlet opening for applying the multi-component composite material at a speed of 1 m / min to 100 m / min, in particular from 3 m / min to 60 m / min. This can enable rapid passage through the outlet opening in sections with low curvature and adapted passage through sections with high curvature.

[0027] Furthermore, the control unit can output separate control information to the metering pump in separate control signals for each track section with a uniform track speed, and / or output multiple control information sets for each track section with a uniform track speed together in at least one control signal to the metering pump. To reduce the processing overhead of the metering system or the control unit, it may be possible to output control information only when a metering pump output needs to be changed. Additionally, control information relating to different metering rates along individual sections can be combined into control signals.

[0028] The dosing system, in particular the dosing pump, can dispense the multi-component composite material in a capacity range of 0.1 cm³ / s to 20 cm³ / s. This allows the dosing capacity of the dosing pump to be adjusted to the movement speed of the outlet opening along the trajectory.

[0029] According to the present invention, the control unit assigns uniform control information to contiguous sections of the trajectory that have a constant curvature, so that the metering pump maintains the discharge of the multi-component composite material unchanged over each contiguous section. Advantageously, the control unit can further assign a uniform feed rate to contiguous sections of the trajectory that have a constant curvature, so that the metering pump maintains the discharge of the multi-component composite material unchanged over each contiguous section. This can further contribute to reducing the processing effort required to control the metering system. In particular, the control unit does not need to output any control information to the metering pump as long as the outlet opening is moving through a trajectory section with a constant curvature.

[0030] The dosing system may also include an air conditioning unit which is designed to temperature control, i.e., to cool or heat, at least one of the components of the multi-component composite material.

[0031] The present invention will now be described in greater detail using an exemplary embodiment. It demonstrates: Figure 1 shows a side view of an embodiment of the device according to the invention; Figure 2 shows a top view of the device. Figure 1 Figures 3a to 3d show longitudinal sections of caterpillars of a multi-component composite material; Figure 4 shows a top view of the dosing system according to the invention; Figure 5 shows a side cross-sectional view of a dynamic mixing head of the dosing system according to the invention; and Figure 6 shows a perspective view of a container frame of the device according to the invention.

[0032] In Figure 1A dosing system according to the invention is generally designated by reference numeral 10. The dosing system 10 comprises a mixing head 12 in which components of a multi-component composite material are mixed together in a mixing chamber 14. The multi-component composite material is applied from the mixing head 12 to a component via an outlet opening 16. In the Figure 1 In the illustrated embodiment, the outlet opening 16 is connected to the mixing chamber 14 via a tubular outlet nozzle 18.

[0033] In the embodiment shown here, the components of the multi-component composite material are conveyed from component sources (not shown) to the mixing chamber and from there to the outlet opening 16 via four metering pumps 20, 22, 24, 26. As described above, it is also conceivable to design a metering system 10 according to the invention with two or three metering pumps.

[0034] A control unit 28, which communicates with the metering pumps 20, 22, 24, 26, provides control information to the metering pumps 20, 22, 24, 26, based on which the respective metering rates of the metering pumps 20, 22, 24, 26 are set. Metering rate can be understood here in particular as the volume and / or mass delivered per second by each metering pump 20, 22, 24, 26.

[0035] In Figure 2 The dosing system 10 is viewed from a vertical top view and it can be seen that the outlet opening 16 (in Figure 2 (shown hidden by overlying components) is moved along a path 30 on which the multi-component composite material is to be applied to a component 32.

[0036] The trajectory 30 comprises a first section 30_1, which is essentially straight, a second section 30_2, which has a 90° curvature, and a third section 30_3, which is again essentially straight.

[0037] A drive 34 is configured to move the outlet opening 16 along the trajectory 30. Since, like any drive, the drive 34 also requires a certain time or distance to accelerate the outlet opening 16, it is obvious that higher displacement velocities of the outlet opening 16 can be achieved in the first section 30_1 and the third section 30_3 of the trajectory 30 than in the second section 30_2, in which the outlet opening 16 has to pass through the 90° curve.

[0038] Since the control unit 28 receives information regarding the path 30 and the path speeds of the output opening 16 that can be achieved there by the drive 34, for example from a CNC control unit not shown, the control unit 28 can output control information to the metering pumps 20, 22, 24, 26 in relation to a corresponding section of the path 30 such that, despite varying path speeds of the output opening 16, the same amount of multi-component composite material is always applied per path unit (for example, each path section with a length of 5 cm).

[0039] Figures 3a to 3d Figures 36, 38, 40, and 42 show longitudinal sections of caterpillars of a multi-component composite material, the longitudinal sections being taken, for example, along a plane which corresponds to a sheet plane in Figure 2 is essentially parallel. The arrows of the Figures 3a to 3dThis indicates the direction along which the respective bead 36, 38, 40, 42 of the multi-component composite material was applied.

[0040] This shows Figure 3a A bead 36, which was produced using a conventional, state-of-the-art metering system. That is, the bead 36 was applied with a constant movement speed of the outlet opening and a constant metering rate of the metering pump. Sections 36_1, 36_2, and 36_3 have a substantially uniform bead thickness.

[0041] Figure 3b This clearly illustrates the problem that arises when a known dosing system is modified only in such a way that the outlet opening 16 is displaced at a higher speed in straight sections of the trajectory 30 than in curved sections of the trajectory 30. The dosing capacity of the dosing system remains constant. It is in Figure 3bIt can be observed that the thickness of the caterpillar 38 initially increases in a section 38_1, where the exit opening 16 is decelerated in order to subsequently traverse the curved section 38_2, and then reaches the thickness corresponding to the speed at which the exit opening 16 is traversed through section 38_2. In a section 38_3, which follows the curved section 38_2, the exit opening 16 is accelerated again, so that the thickness of the caterpillar 38 decreases accordingly.

[0042] Figure 3cThis figure shows another undesirable result of applying a bead 40 made of multi-component composite material to a component. While the speed at which the outlet opening 16 is displaced during application of the bead 40 is adjusted based on the curvatures of sections 40_1, 40_2, and 40_3, the metering rate of a metering pump(s) 20, 22, 24, 26 is not controlled proportionally to the speed of displacement of the outlet opening 16. As a consequence, the metering pump decelerates or accelerates too much, so that the thickness of the bead 40 decreases in section 40_1 towards section 40_2, increases again in section 40_2 towards the beginning of section 40_3, and then decreases again along section 40_3.

[0043] Figure 3dFigure 1 shows the result of applying a bead 42 of a multi-component composite material based on the present invention. During the application of the bead 42, both the movement speed of the outlet opening 16 and the metering rate of the metering pumps 20, 22, 24, 26 are varied proportionally to the movement speed of the outlet opening 16. As a result, a bead 42 can be produced which has a constant thickness across sections 42_1, 42_2, and 42_3, i.e., a thickness perpendicular to the plane of the sheet. Figure 3d and has a cross-sectional area that is constant perpendicular to the direction of application of the caterpillar 42.

[0044] Figure 4 The dosing system 10 is shown in a top view. The mixing head 12 is analogous to... Figure 2Viewed from above. On both sides of the mixing head 12 are arranged first and second metering pumps 22, 24, whereby, as an example, the first metering pump 22 is to be assigned to the first component A and the second metering pump 24 is to be assigned to the second component B.

[0045] In the Figure 4In the area shown at the bottom right, a first component container 44 for the first component A and a second component container 46 for the second component B are visible. These are designed as drums and are interchangeably connected to the dosing system 10. The component containers 44 and 46 are each fluidically coupled to a supply pump 48, 50, with the supply pump 48 delivering the first component A from the first component container 44 and the supply pump 50 delivering the second component B from the second component container 46 via lines (not shown) to the mixing head 12. During an operating phase of the mixing head, the supply pumps 48, 50 are operated continuously or with speed control, ensuring a continuous supply of components to the mixing head and maintaining a predetermined overpressure in the supply lines.

[0046] The dosing system 10 further includes an air conditioning unit 52, which is designed to temper at least one of the components A and B, i.e. to cool or heat it.

[0047] In Figure 4 Also shown are a rinsing device 54 for emptying and / or cleaning the mixing head 12 and a scale 56.

[0048] In Figure 5 The mixing head 12 is shown in an enlarged side cross-sectional view. It can be seen that the mixing head 12 is designed as a dynamic mixing head in this embodiment. That is, a stirring element 58 is located in the mixing chamber 14, which rotates within the mixing chamber 14 about the vertical axis (in Figure 5 (an axis from top to bottom).

[0049] The stirring element 58 has recesses 60 on its outer circumference to improve its stirring action. This allows components introduced into the mixing chamber 14, for example components A and B, to be mixed very homogeneously.

[0050] The mixed components leave the mixing chamber 14 via the tubular outlet nozzle 18 and are then applied to a workpiece via the outlet opening 16.

[0051] In Figure 6A container rack 62 is shown, which serves to hold, among other things, the first (not shown) and second component containers 46 and the respective supply pumps 48, 50, as well as the air conditioning unit 52. As can be seen, the component containers are arranged above the supply pumps 48, 50, so that components A and B can be supplied to the supply pumps 48, 50 by gravity. Furthermore, the elevated position of the component containers facilitates their exchange, for example, using a forklift.

Claims

1. Metering system (10) for applying a bead (36, 38, 40, 42) of a multi-component composite material to a component (32), wherein the metering system (10) comprises: - a mixing head (12), which has one supply line for each component of the multi-component composite material, leading from a source of each component to a mixing chamber (14) of the mixing head (12), which is configured to mix the individual components of the multi-component composite material in the mixing chamber (14), and which has an outlet opening (16) through which the mixed multi-component composite material exits the mixing head (12), - a metering pump (20, 22, 24, 26), which is configured to convey a discharge of the multi-component composite material through the outlet opening (16) of the mixing head (12), and - a control unit (28), which is configured to output, to the metering pump (20, 22, 24, 26), a control signal comprising control information, in such a way that a metering output of the multi-component composite material through the outlet opening (16) of the mixing head (12) is adjusted on the basis of the control signal, wherein the control unit (28) is configured to contain and / or receive information related to a trajectory (30), and / or to a path velocity based on the trajectory (30), along / by which the outlet opening (16) will be moved in order to apply the multi-component composite material, wherein, in the case that the control unit (28) has information available related to the path velocity based on the trajectory (30), for each portion (30_1, 30_2, 30_3) of the trajectory (30) to which a different path velocity is allocated compared with at least one directly adjacent portion (30_1, 30_2, 30_3) of the trajectory (30), the control unit (28) is configured to output separate control information to the metering pump (20, 22, 24, 26), in such a way that a cross-sectional area of the bead (36, 38, 40, 42) of the multi-component composite material remains substantially constant over the entire trajectory (30), which comprises different path velocities, and wherein, in the case that the control unit (28) has information available related to the trajectory (30), the control unit (28) is configured to assign, to related portions (30_1, 30_2, 30_3) of the trajectory (30) that have a consistent curvature, a uniform control information for the metering pump (20, 22, 24, 26), in order to adjust the discharge of the multi-component composite material, wherein the metering system (10) in each case comprises one pump set per component (A, B) of the multi-component composite material, wherein the pump set comprises the metering pump (20, 22, 24, 26) and a supply pump (48, 50), wherein the metering pump (20, 22, 24, 26) is arranged at a maximum distance of 2 m from the outlet opening (16) of the mixing head (12), measured along a fluid path from the metering pump (20, 22, 24, 26) towards the outlet opening (16), wherein the supply pump (48, 50) is arranged adjacently to a respective component container (44, 46) containing a particular component (A, B) of the multi-component composite material, and wherein the multi-component composite material is an adhesive foam or sealing foam comprising two or more components.

2. Metering system (10) according to claim 1, characterized in that the outlet opening (16) of the mixing head (12) is formed as a portion of the mixing chamber (14), or is connected to the mixing chamber (14) by means of a line (18).

3. Metering system (10) according to claim 2, characterized in that the line is formed between the outlet opening (16) and the mixing chamber (14) of the mixing head (12) as a tubular outflow nozzle (18) or a hose line.

4. Metering system (10) according to any of the preceding claims, characterized in that the metering system (10) is configured to move the outlet opening (16) for applying the multi-component composite material at a speed of from 1 m / min to 100 m / min, in particular from 3 m / min to 60 m / min.

5. Metering system (10) according to any of the preceding claims, characterized in that, for each trajectory portion (30_1, 30_2, 30_3) having a uniform path velocity, the control unit (28) is configured to output separate control information to the metering pump (20, 22, 24, 26) in separate control signals and / or said control unit is configured to output, to the metering pump (20, 22, 24, 26), a plurality of pieces of control information, separated for each trajectory portion (30_1, 30_2, 30_3) having a uniform path velocity, together in at least one control signal.

6. Metering system (10) according to any of the preceding claims, characterized in that the trajectory (30), which comprises different path velocities, is formed as a closed ring.

7. Metering system (10) according to any of the preceding claims, characterized in that the multi-component composite material comprises polyurethane or silicone.

8. Metering system (10) according to any of the preceding claims, characterized in that the metering system (10), in particular the metering pump (20, 22, 24, 26), is configured to discharge the multi-component composite material in an output range of from 0.1 cm3 / s to 20 cm3 / s.

9. Metering system (10) according to any of the preceding claims, characterized in that the control unit (28) is furthermore configured to assign, to related portions (30_1, 30_2, 30_3) of the trajectory (30) that have a consistent curvature, a uniform path velocity.

10. Method for uniformly applying a bead (36, 38, 40, 42) of a multi-component composite material to a component (32), wherein the method comprises: - providing a mixing head (12), which has one supply line for each component of the multi-component composite material, leading from a source of each component to a mixing chamber (14) of the mixing head (12), which is configured to mix the individual components of the multi-component composite material in the mixing chamber (14), and which has an outlet opening (16) through which the mixed multi-component composite material exits the mixing head (12), - providing a metering pump (20, 22, 24, 26), which is configured to convey a discharge of the multi-component composite material through the outlet opening (16) of the mixing head (12), and - providing a control unit (28), which outputs, to the metering pump (20, 22, 24, 26), a control signal comprising control information, in such a way that a metering output of the multi-component composite material through the outlet opening (16) of the mixing head (12) is adjusted on the basis of the control signal, wherein the control unit (28) contains and / or receives information related to a trajectory (30), and / or to a path velocity based on the trajectory (30), along / by which the outlet opening (16) will be moved in order to apply the multi-component composite material, wherein, in the case that the control unit (28) has information available related to the path velocity based on the trajectory (30), for each portion of the trajectory (30) to which a different path velocity is allocated compared with at least one directly adjacent portion of the trajectory (30), the control unit (28) outputs separate control information to the metering pump (20, 22, 24, 26), in such a way that a cross-sectional area of the bead (36, 38, 40, 42) of the multi-component composite material remains substantially constant over the entire trajectory (30), which comprises different path velocities, and wherein, in the case that the control unit (28) has information available related to the trajectory (30), the control unit (28) assigns, to related portions (30_1, 30_2, 30_3) of the trajectory (30) that have a consistent curvature, uniform control information such that the metering pump (20, 22, 24, 26) leaves the discharge of the multi-component composite material over each related portion unchanged, wherein the metering system (10) in each case comprises one pump set per component (A, B) of the multi-component composite material, wherein the pump set comprises the metering pump (20, 22, 24, 26) and a supply pump (48, 50), wherein the metering pump (20, 22, 24, 26) is arranged adjacently to the outlet opening (16) of the mixing head (12), in particular at a maximum distance therefrom of 2 m, measured along a fluid path from the metering pump (20, 22, 24, 26) towards the outlet opening (16), and wherein the supply pump (48, 50) is arranged adjacently to a respective component container (44, 46) containing a particular component (A, B) of the multi-component composite material, and wherein the multi-component composite material is an adhesive foam or sealing foam comprising two or more components.

11. Method according to claim 10, characterized in that the metering system (10) moves the outlet opening (16) for applying the multi-component composite material at a speed of from 1 m / min to 100 m / min, in particular from 3 m / min to 60 m / min.

12. Method according to either claim 10 or claim 11, characterized in that, for each trajectory portion (30_1, 30_2, 30_3) having a uniform path velocity, the control unit (28) outputs separate control information to the metering pump (20, 22, 24, 26) in separate control signals and / or said control unit outputs, to the metering pump (20, 22, 24, 26), a plurality of pieces of control information, separated for each trajectory portion (30_1, 30_2, 30_3) having a uniform path velocity, together in at least one control signal.

13. Method according to any of claims 10 to 12, characterized in that the metering system (10), in particular the metering pump (20, 22, 24, 26), discharges the multi-component composite material in an output range of from 0.1 cm3 / s to 20 cm3 / s.

14. Method according to any of claims 10 to 13, characterized in that the control unit (28) assigns, to related portions (30_1, 30_2, 30_3) of the trajectory (30) that have a consistent curvature, a uniform path velocity such that the metering pump (20, 22, 24, 26) leaves the discharge of the multi-component composite material over each related portion unchanged.