Device for dosing bulk material components

0001The invention relates to an installation for collecting flowable material components in several series components arranged containers are included, each with a metering device in the region of the outlet of each component container and one along the lined component container movable storage tank, in which the each material component in proportion to their a mixture recipe is passed.

0002In systems of this type, a plurality of component containers be arranged in series, and depending on the mixing formulation Components only from the individual or from all containers are removed, with only one movable collecting container is required, the components in the container to an programmed sequence according to the respective for Mixture formulation components to be removed anfährt. The Component is then by means of the metering device from the removed components and containers to the collection container to hand over.

0003As metering usually serve Feeders that in Depending on their speed, a certain volume of remove components and dispose to the collection. For strongly varying amounts, the speed of Dosing also be variable to the withdrawal process to accelerate. In most cases, however, a gravimetric metering of the components required. This is one of the dosing weighing device downstream in front. So for example it is known (EP 0344521 B1) each component container and a metering screw a assign weighing device and the various weighing containers according to the program of the recipe with a to go collecting. This system is very complex, but has due to the tilting bearing of the weighing container Advantage that the emptying quickly and without further Auxiliaries, such as Lockungseinrichtungen or the like, can be carried out and that further residue-free emptying is the weighing container possible, whereby a high accuracy recipe is guaranteed.

0004Far less expensive is not for an older, designed previously published proposal of the Applicant System (EP 1361185 A2), in which the collection container along the component container is moved and each component container at its bottom a non-driven dosing having the ride of a on the driving frame Coupling means be set in rotation. This facility has the great advantage that only a single drive Feeders for all component container is required, the individual components to a designed as a weighing container collecting container likewise mitfährt with the driving frame proposed. Because of further details will be on the older patent application referenced, the disclosures also the subject of this Application is made. The invention relates preferably on systems of this type, but is equally advantageously applicable to systems in which each Weigh hopper a driven metering screw assigned is.

0005Because among the components to be processed and those may be located, have poor flow properties and to tend bridging, it comes in such a case necessarily incorrect dosages. The one could at least act that for each component container, but at least for those who are such bad flowing components contain, associated with its own loosening device is that at start of the collecting / weighing container is set in activity to a trouble-free continuous to ensure discharge. Such a measure would technically complex and also functionally vulnerable.

0006The invention is based on the object, a system for Collecting flowable material components in contain several component containers arranged in a row and transfer it to a mobile storage container are so formed, that bad flowable and A bridging prone Materialkompönenten properly and continuously with minimal constructive constructional are discharged and passed.

0007This object is achieved in that with the collection, a vibrator is moved, the start at a selected component container by means of a Actuator to the wall of said container for loosening the material component contained therein attachable is, and that the actuator relative to the vibrator is decoupled in terms of vibration.

0008With the invention, the great advantage is connected that only one loosening device is needed, either at all or only at component containers those containing a poorly flowable component, brought to be used. By vibration control Decoupling of the vibrator of the actuator is avoided that the vibration on the actuator and thus on the traveling frame and the entrained with it transfer components and the common or weighing container will. Since only one for the entire system Loosening device is necessary is also reduced the susceptibility and power consumption is minimized, since the loosening device only ever in operation is taken when actually material from the corresponding Container is discharged.

0009In preferred embodiments, the vibrator is on the wall the component container self-adhesive attachable so that in the operating position only a connection between him and the container and has a vibrational decoupling with respect to the actuator in a simple and versatile Is possible.

0010Advantageously, the vibrator a pneumatically controlled Suction cup for attaching to the wall of component container on. After preparation and evacuation of the suction cup forms the vibrator an autonomous structural unit, which with the connected container and opposite the actuator vibrationally is isolated. To remove the vibrator the suction cup is vented and from the actuator back into its rest position spent. After reaching the same is the Vibrator together with the chassis frame and the sump proceed to the next component container, until finally the final mixture formulation is added. Finally is the collection in a transfer station A process in which the final mixture formulation from the Clippings / weighing container for example in a mixer will be handed over.

0011The vibrator is preferably formed as a piston vibrator, acting with a knocker on the container. Alternatively, a Umwuchtmotor can provided be.

0012Advantageously, the actuator is a pneumatic cylinder, of the piston vibrator in operating position brings.

0013For this purpose, the actuator is fixed and the piston vibrator spaced therefrom, wherein between them means connected to the actuator, damping guide is arranged, in which a piston connected to the vibrator Guide member is guided with play.

0014Thus, there is no direct metallic connection between the vibrator and the actuator, so that the Vibrator after adhering to the container the can transmit vibrational motion, and that no engage over vibration to the actuator.

0015In a preferred embodiment of the collection container sitting in a Driving frame and the actuator with the driving frame about a vibration damping component connected. This ensures, that no vibrations on the chassis frame and the pictures taken by him collecting or weighing container be transmitted.

0016Typically component containers have in the invention mentioned plants a funnel-shaped inwards the fed to the lower part, at the bottom of the Dosing followed. Such components containers is the piston vibrator to the lower part attachable with its So axis inclined at a corresponding angle. Thereby, the force of gravity during the return movement of the piston vibrator additionally be used in the rest position.

0017As already indicated in a further preferred embodiment, the collection designed as a weighing container, so that the components according to their proportion by weight are taken from the individual component containers can.

0018Further details and advantages of the invention will from the following description of the drawing reproduced preferred embodiment. In the Drawing:<dl tsize="5"><dt>Fig.1</dt><dd>is a schematic partial view of a plant a component container and a movable weighing container;</dd><dt>Fig.2</dt><dd>a schematic view - partly in Section - a ride-loosening device in traversing;</dd><dt>Fig.3</dt><dd>one of Fig.2 corresponding view of the Loosening device in docking;</dd><dt>Fig.4</dt><dd>one of Fig.2 corresponding loosening device in working position and</dd><dt>Fig.5</dt><dd>a view "X" in accordance with Figure 4 without the Pneumatic cylinders.</dd></dl>

0019In Fig.1 a still frame 1 can be seen, on which the Drawing right reproduced subcomponents container 2 are mounted interchangeably. Several such component container 2 are in a direction perpendicular to the drawing plane Series behind one another. Each component container 2 contains a flowable, eg powdered up granular material component.

0020In each components container 2 is directly above the Soil a non-driven metering screw 3 which - As described later - for discharging the material component serves.

0021is on the left in Figure 1 part the Stand 1 Traveling frame 5 by means of rollers 4 along the lined component container 2 movable. sitting in the carriage frame 5 a weighing container 6, the over load cells 7 on the Driving frame is supported. On the drive frame further sitting a coupling and docking 8 with a drive motor 9, the discharge side to the end of the metering screw 3 can be moved up to the metering screw 3 in to enable rotation and the included component containers 2 Material component according to their share of Mixture formulation to pass into the weighing container. 6 For further details of these dosing and transfer device is on the non-prepublished German Patent Application 103 20 763.5 referenced.

0022On the drive frame 5 finally sits a discharge aid 10 in the form of a loosening device in Fig.1 in the reproduced traversing position and enlarged in Figure 2 in Scale is shown. As actual loosening device is a piston vibrator 11, the compressed air connection on a 12 is operated by means of a suction cup and 13 to the wall 14 of the funnel-shaped retracted inwardly can be adhered under part of the container the second Of the Piston vibrator 11 is fixed to a guide member 15, which consists of two parallel guide rods 16 (See Figure 5). Further, the loosening means a Actuator (17) for the piston vibrator 11 which in formed embodiment shown as a pneumatic cylinder is. The piston 18 of the pneumatic cylinder 17 is on its head 19 is provided with a damping plastic part 20 (See Fig.3), the through-holes in parallel two guide rods 16 of the guide member 15 receives. The guide rods 16 of the guide member 15 have at their the suction cup 13 remote from the end 21 a a conical transition to a heavily reduced diameter.

0023The plastic part 20 has damping properties. Likewise, the pneumatic cylinder 17 is absorbing a Plastic part 24 by means of an angle 22 at a Frame member 23 of the traveling frame 5 fixed damping.

0024The suction cup 13 is its own pneumatic connection 26 (see Fig.5) evacuated by means of an injector. In the Driving position (Figure 2) is the position of the piston vibrator 11 and thus the suction cup 13 by means of a sensor 25 (Fig.5) is sampled to ensure that the suction cup is optional in the driving position from the container. 2

0025The operation of the loosening device is below described:

0026If the moving frame 5 with the weighing container 6 a preselected approached component containers 2, first the Docking and coupling means 8 with the metering screw 3 connected and at the same time exposed the outlet. simultaneously or thereafter, the loosening device of the in Fig.1 and 2, the driving position in the docking position shown in Figure 3 brought by the piston rod 18 of the pneumatic cylinder 17 extends and on the plastic part 20 the guide member 15 and the associated fixed with him Piston vibrator 11 takes along with the suction cup. 13 In this Docking position of the suction cup 13 of the suction cup is evacuated, so that the piston vibrator 11 itself adhered to the Wall 14 of the container 2 is attached. In this position (Figure 3) the piston rod 18 of the pneumatic cylinder moved back 17 so that the plastic part 20 from the Guide member 15 is released by the thinner end 21 in the hole 26 of the plastic part 20 sufficient clearance owns. In this position the piston vibrator 11 is exclusively on the self-adhesive suction cup 13 at the Wall held 14 and by means of via the port 12 fed compressed air to operate. The vibrations transmitted and on the wall 14 of the container thus the material component contained in it, so that the material continuously the dosing flow to 3.

0027The discharge aid or loosening device 10 can optionally at each components container used for preparing desired blend formulation is approached, or even only such components containers a difficult flowing containing material, are recognized.