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DE-102024115769-B4 - Vibratory conveying device with a conveying trough and dosing device with a vibratory conveying device

DE102024115769B4DE 102024115769 B4DE102024115769 B4DE 102024115769B4DE-102024115769-B4

Abstract

A vibratory conveying device (1) with a conveying trough (2), with a drive device (3) which is operatively connected to the conveying trough (2) in such a way that the conveying trough (2) can be set into vibration by the drive device (3) during conveying operation in such a way that objects resting on an output area (5) of the conveying trough (2) are conveyed by a vibratory movement of the conveying trough (2) in the direction of a target area (6) of the conveying trough (2) spaced apart from the output area (5), and with a frame (16) on which the drive device (3) and the conveying trough (2) operatively connected thereto are mounted via a bearing device (8), characterized in that the conveying trough (2) is mounted directly on the bearing device (8) via a positive guidance device (7), and that the drive device (3) is mounted directly on the bearing device (8) via a vibration device (9), so that during conveying operation both the conveying trough (2) and The drive device (3) shall each perform at least temporarily opposing oscillatory movements relative to the bearing device (8).

Inventors

  • Samuel Bouvron
  • Herman de Jong

Assignees

  • QLAR EUROPE GMBH

Dates

Publication Date
20260513
Application Date
20240606

Claims (10)

  1. A vibratory conveying device (1) with a conveying trough (2), with a drive device (3) which is operatively connected to the conveying trough (2) such that the conveying trough (2) can be vibrated by the drive device (3) during conveying operation in such a way that objects resting on an output area (5) of the conveying trough (2) are conveyed by a vibratory movement of the conveying trough (2) in the direction of a target area (6) of the conveying trough (2) spaced apart from the output area (5), and with a frame (16) on which the drive device (3) and the conveying trough (2) operatively connected thereto are mounted via a bearing device (8), characterized in that the conveying trough (2) is mounted directly on the bearing device (8) via a positive guidance device (7), and that the drive device (3) is mounted directly on the bearing device (8) via a vibration device (9), so that during conveying operation both the conveying trough (2) and The drive unit (3) also performs at least temporarily opposing vibration movements relative to the bearing unit (8).
  2. vibratory conveying device (1) according Claim 1 , characterized in that the forced guidance device (7) and the vibration device (9) are of the same design.
  3. vibratory conveying device (1) according Claim 1 or Claim 2 , characterized in that the positive guidance device (7) and the vibration device (9) are formed in one piece.
  4. vibratory conveying device (1) according to one of the preceding claims, characterized by Figure 1 shows that the forced guidance device (7) has two forced guidance elements which are spaced apart from each other in a conveying direction on the bearing device (8) and on the conveying trough (2), wherein the conveying direction is directed from the starting area (5) to the target area (6) of the conveying trough (2).
  5. A vibratory conveying device (1) according to one of the preceding claims, characterized in that the design of the forced guidance device (7) and the design of the vibration device (9) are coordinated to each other and that the masses of the conveying trough (2) and the forced guidance device (7) on the one hand and of the vibration device (9) and the drive device (3) on the other hand are coordinated to each other such that during conveying operation, the magnitude of an amplitude of a resulting force acting on the bearing device (8), which corresponds to a superposition of the respective force acting from the conveying trough (2) and from the drive device (3), is less than 50%, less than 20% or less than 10% of the magnitude of an amplitude of a force acting from the conveying trough (2) or from the force acting from the drive device (3) on the bearing device (8).
  6. Vibrating conveying device (1) according to one of the preceding claims, characterized in that the drive device (3) has a vibration generation device and is configured such that vibrations transmissible to the conveying trough (2) can be generated with the vibration generation device at a frequency which corresponds to a natural frequency of a vibrating structure mounted on the bearing device (8), wherein the vibrating structure comprises the conveying trough (2) and the positive guidance device (7) as well as the vibration device (9) and the drive device (3).
  7. vibratory conveying device (1) according Claim 6 , characterized in that the bearing device is connected in an area within the vibration structure with the positive guidance device (7) and with the vibration device (9) of the vibration structure in which an amplitude of the deflection of the vibration structure is less than 20%, less than 10% or less than 5% of the maximum amplitude of the deflection of the conveyor trough (2) or the drive device (3).
  8. Vibrating conveying device (1) according to one of the preceding claims, characterized in that a storage container (20) is arranged and fixed on the frame (16) in such a way that objects from the storage container (20) can be applied to the outlet area (5) of the conveying trough (2) through a storage container opening (21), and that the frame (16) is mounted on a base frame (19) via a weight force measuring device.
  9. Metering device (17) with which objects resting on an output area (5) of a conveying trough (2) and conveyed by a vibration movement of the conveying trough (2) towards a target area (6) of the conveying trough (2) spaced apart from the output area (5) can be conveyed at a predefinable conveying rate or with a predefinable mass flow, characterized in that the metering device is a vibratory conveying device (1) according to one of the Claims 1 until 8 exhibits.
  10. Dosing device (17) according to Claim 9 , characterized in that the dosing device (17) has a control device which is designed and configured in such a way that the delivery rate actually generated during the delivery operation can be adjusted to a desired delivery rate using the control device.

Description

The invention relates to a vibratory conveying device comprising a conveying trough, a drive unit connected to the conveying trough in such a way that the conveying trough can be vibrated by the drive unit during conveying operation, such that objects resting on an output area of the conveying trough are conveyed by a vibratory movement of the conveying trough towards a target area of the conveying trough spaced apart from the output area, and a frame on which the drive unit and the conveying trough connected thereto are mounted via a bearing arrangement. The invention also relates to a metering device comprising such a vibratory conveying device. Such vibratory conveying devices are known in various designs from practical experience. From the DE 10 2011 089 050 A1 For example, a vibratory conveyor is known that comprises a conveying channel, a base frame, a counterweight, a vibration exciter, and first and second springs. The first springs connect the base frame to the conveying channel, and the second springs connect the base frame to the counterweight. The conveying channel, base frame, and first springs form a first two-mass system, while the counterweight, base frame, and second springs form a second two-mass system with an identical resonant frequency. Furthermore, the DE 30 43 009 A1 a vibratory feeding system comprising a payload, a spring arranged between the payload and a counterweight, and a drive for generating vibrations for the conveying movement of the payload, wherein the payload is subject to a forced guidance which allows only one clearly desired conveying movement. From the AT 191 329 B A drive for vibrating machines with two counter-rotating masses is known, wherein each mass is connected to a crankshaft by one or more connecting rods, and the weight of the drive is absorbed solely by one or more springs attached to one of the vibrating masses. Furthermore, the WO 2017 158 496 A2 a vibratory conveyor with a vibrating support arrangement for a conveying element in which material is conveyed, a drive arrangement and a bearing arrangement, wherein leaf springs or links are provided that couple the front end of the conveying element and the rear end in such a way that there is no deviation with respect to the vertical vibration component. Vibratory conveyors are used, for example, as part of a dosing system. They convey a predetermined quantity of bulk material or individual items from a storage container to a further processing or handling point via a conveyor trough. The individual objects rest on the surface of the conveyor trough and are transported by vibratory movements of the conveyor trough, bouncing across the surface from the source area towards the destination area. The source area is typically located at one end of the conveyor trough, while the destination area is at the opposite end. The objects are either lifted from the conveyor trough and conveyed further, or, more commonly, fall off an edge at the other end. By recording the decrease in total weight during conveying operation—a decrease encompassing the slowly emptying hopper, the conveying trough, and the objects transferred from the hopper onto the trough—the conveying rate can be determined and appropriately controlled. The weight decrease per unit of time, measured, for example, using load cells, corresponds to the weight of the objects conveyed along the trough to the target area during that time and exiting the trough, for instance, by falling over the edge. The load cells used to detect weight loss are continuously subjected to the total weight of the system—consisting of the filled hopper and the vibratory conveying unit—during operation. The weight loss relevant for dosing, and measured by the load cells, corresponds to the weight of a few objects falling from the conveyor trough within a given time period. For many applications, the total weight of the system loaded with a large number of objects is at least one order of magnitude, and often more than two orders of magnitude, greater than the weight of the few objects being conveyed out of the system, thus causing the weight loss. To achieve the highest possible dosing accuracy, it is therefore considered advantageous if the overall weight can be specified as low as possible. At the same time, vibrations that must be generated to convey the objects along the conveyor trough should, as far as possible, be confined to the conveyor trough and the drive unit that generates and transmits the vibrations to the conveyor trough, and should not propagate to the surrounding area via the frame. This problem is solved according to the invention by providing a vibratory conveying device with the features listed above in which the conveying trough is mounted directly on the bearing assembly via a positive guidance device, and the drive unit is mounted directly on the bearing assembly via a vibration device, so that during conveying operation both the conveying trough and the dr