TWO-MASS VIBRATING CONVEYOR DEVICE AND VIBRATION DAMPER KIT FOR A TWO-MASS VIBRATING CONVEYOR DEVICE

Abstract

A two-mass vibrating conveyor device is described, comprising a first mass which defines a vibrating conveyor path, a second mass which defines an equivalent vibrating conveyor path, motorization means operatively associated with the first mass and the second mass, elastic means which interconnect the first mass with the second mass, and damping means, each of the damping means being fixed at a stationary node of the elastic means. Furthermore, a vibration damper kit is described, belonging to damping means interconnecting a two-mass vibrating conveyor device to a fixed support structure.

Claims

1-9. (canceled)

10. A two-mass vibrating conveyor device in combination with a fixed support structure, the two-mass vibrating conveyor device comprising a first mass which defines a vibrating conveyor path, a second mass which defines an equivalent vibrating conveyor path, a motorization means operatively associated with the first mass and the second mass to impart a vibrating force to the first mass and a vibrating force in counter-phase to the second mass, an elastic means which interconnect the first mass and the second mass and a damping means which interconnect the two-mass vibrating conveyor device to the fixed support structure, each of the damping means being fixed at a stationary node of the elastic means to help transmit a dynamic reaction equipped with a fixed support structure, wherein each of the damping means is constituted by a rigid clamp formed by a pair of clamp plates, each clamp plate being shaped to be fixed in correspondence of a respective stationary node of the elastic means, at least one interface plate being connected to the respective clamp plate by means of a component of a damping substance and first connecting means of the pair of clamp plates and the at least one interface plate with the component of a damping substance.

11. The two-mass vibrating conveyor device of claim 10, wherein the elastic means comprise at least one pack of sheets, each sheet being elastically deformable and shaped to receive the first connecting means, second connecting means to the second mass and third connecting means to the first mass, the first connecting means being located between the second connecting means and the third connecting means.

12. The two-mass vibrating conveyor device of claim 11, wherein the elastic means comprise at least one elastically deformable sheet shaped to receive the first connecting means, the second connecting means to the second mass and the third connecting means to the first mass, the first connecting means being located between the second connecting means and the third connecting means.

13. The two-mass vibrating conveyor device of claim 10, wherein the motorization means consisting of at least one electromagnet with a ferromagnetic core and a coil body fixed to a mass, an electromagnet armature being fixed to the other mass, so as to be able to move the first mass in counter-phase with respect to the second mass.

14. The two-mass vibrating conveyor device of claim 10, wherein the motorization means consisting of an electric motor connected to a cam crank mechanism fixed to one of the first mass and the second mass.

15. The two-mass vibrating conveyor device of claim 10, wherein the vibrating conveyor path of the first mass consists of a linear section or a curved section.

16. A vibration damper kit belonging to damping means which interconnect a two-mass vibrating conveyor device to a fixed support structure, the two-mass vibrating conveyor device comprising a first mass defining a vibrating conveyor path, a second mass defining an equivalent vibrating conveyor path, motorization means operatively associated with the first mass and the second mass to impart a vibrating force to the first mass and a vibrating force in counter-phase to the second mass, elastic means which interconnect the first mass and the second mass, the vibration damper kit comprising a rigid clamp formed by a pair of clamp plates, each clamp plate being shaped to be fixed at a respective stationary node of the elastic means, at least one interface plate being connected to the respective clamp plate by means of a component of a damping substance, and first connecting means of the pair of clamp plates and the at least one interface plate with the damping substance.

17. The vibration damper kit of claim 16, comprising a fixed support structure.

18. The vibration damper kit of claim 16, comprising elastic means.

Description

[0049] The present invention will be better described by some preferred embodiments, provided by way of non-limiting example, with reference to the attached drawings, in which:

[0050] FIG. 1 shows an axonometric view of a first embodiment of the vibrating conveyor device with two masses, according to the present invention;

[0051] FIG. 2 shows a side view of a subassembly of the previous figure;

[0052] FIG. 3 shows a side view of a subassembly of a second embodiment of the two-mass vibrating conveyor device, according to the present invention;

[0053] FIG. 4 and FIG. 5 show an enlarged detail IV of FIG. 2 in two different forms;

[0054] FIG. 6 shows a side view of a sub-assembly of a third embodiment of the two-mass vibrating conveyor device, according to the present invention;

[0055] FIG. 7 shows a first embodiment of the vibration damper kit, according to the present invention;

[0056] FIG. 8 shows an embodiment of a relevant detail of an embodiment of the vibration damper kit, according to the present invention;

[0057] FIG. 9 shows an axonometric view of a fourth embodiment of the vibrating conveyor device with two masses, according to the present invention;

[0058] FIG. 10 shows a side view of the previous figure;

[0059] FIG. 11 shows a second embodiment of the vibration damper kit, according to the present invention;

[0060] FIGS. 12, 13, 14 show an axonometric view of a fifth embodiment of the two-mass vibrating conveyor device, according to the present invention;

[0061] FIG. 15 shows an axonometric view of a sixth embodiment of the vibrating conveyor device with two masses, according to the present invention;

[0062] FIG. 16 shows a third embodiment of the vibration damper kit, according to the present invention;

[0063] FIG. 17, shows an axonometric view of a seventh embodiment of the vibrating conveyor device with two masses, according to the present invention;

[0064] FIG. 18 shows a fourth embodiment of the vibration damper kit, according to the present invention;

[0065] FIG. 19 shows an FEA rendering image concerning the behavior of the total deformation in millimeters of the vibration damper, according to the present invention;

[0066] FIGS. 20, 21 show a sectional view of the vibration damper kit of FIG. 7, according to the present invention.

[0067] Referring to FIG. 1 and FIG. 15, it is possible to note that a two-mass vibrating conveyor device 100, 200 comprises a first mass 1, 3 which defines a vibrating conveyor path, a second mass 2, 4 which defines an equivalent path of vibrating conveyor, motorization means 5, 6 operatively associated with the first mass 1, 3 and the second mass 2, 4 to impart a vibrating force to the first mass 1, 3 and a vibrating force in counter-phase to the second mass 2, 4, elastic means 7 which interconnect the first mass 1, 3 and the second mass 2, 4 and damping means 8 which interconnect the two-mass vibrating conveyor device 100, 200 to a fixed support structure 9.

[0068] Advantageously, each of the damping means 8 is fixed at a stationary node of the elastic means 7 to help transmit a reduced dynamic reaction to the fixed support structure 9.

[0069] Referring to FIGS. 2 to 5, 7, 8, and 15 to 17, it is possible to note that each of the damping means 8 consists of a rigid clamp formed by a pair of clamp plates 10, 11, each clamp plate 10, 11 being shaped to be fixed at a respective stationary node of the elastic means 7, at least one interface plate 12, 13 being connected to the respective clamp plate 10, 11 by means of a component of a damping substance 14, 15 and first connecting means 16 of the pair of clamp plates 10, 11 and interface plates 12, 13 with the component of a damping substance 14, 15.

[0070] The elastic means 7 comprise at least one pack of foils, each foil being elastically deformable and shaped to receive the first connecting means 16, the second connecting means 17 to the second mass 2, 4 and the third connecting means 18 to the first mass 1, 3, the first connecting means 16 being located between the second connecting means 17 and the third connecting means 18.

[0071] Alternatively or in a combined way, the elastic means 7 comprise at least one elastically deformable sheet shaped to receive the first connecting means 16, the second connecting means 17 to the second mass 2, 4 and the third connecting means 18 to the first mass 1, 3, the first connecting means 16 being located between the second connecting means 17 and the third connecting means 18.

[0072] Referring to FIG. 1, 2, 3, 6, 10, 15, 17, it is possible to note that the motorization means 5, 6 consist of at least one electromagnet with a ferromagnetic core and a coil body fixed to a mass, an electromagnet armature being fixed to the other mass, so as to be able to move the first mass 1, 3 in counter-phase with respect to the second mass 2, 4.

[0073] Alternatively, the motorization means 5, 6 consist of an electric motor connected to a cam crank mechanism fixed to one of said first mass 1, 3 and said second mass 2, 4, not shown.

[0074] Referring to FIGS. 1 to 14, it is possible to note that the vibrating conveyor path of the first mass 1 consists of a linear section.

[0075] Referring to FIG. 15, 17, it is possible to note that the vibrating conveyor path of the first mass 3 consists of a curved portion.

[0076] Referring to FIG. 7, 11, 14, 20, 21 and to FIG. 16, 18, it is possible that a vibration damper kit 300, 400 according to the present invention belongs to damping means 8 which interconnect a two-mass vibrating conveyor device 100, 200 to a fixed support structure 9, the two-mass vibrating conveyor device 100, 200 comprising a first mass 1, 3 which defines a vibrating conveyor path, a second mass 2, 4 which defines an equivalent vibrating conveyor path, motorization means 5, 6 operatively associated with the first mass 1, 3 and to the second mass 2, 4 to impart a vibrating force to the first mass 1, 3 and a vibrating force in counter-phase to the second mass 2, 4, and elastic means 7 which interconnect the first mass 1, 3 and the second mass 2, 4.

[0077] Advantageously, the vibration damper kit 300, 400 comprises a rigid clamp formed by a pair of clamp plates 10, 11, each clamp plate 10, 11 being shaped to be fixed at a respective stationary node of the elastic means 7, at least one interface plate 12, 13 being connected to the respective clamp plate 10, 11 by means of a component of a damping substance 14, 15, and first connecting means 16 of the pair of clamp plates 10, 11 and such at least one interface 12, 13 with the component of a damping substance 14, 15.

[0078] The vibration damper kit 300, 400 includes a fixed support structure 91.

[0079] The vibration damper kit 300, 400 includes elastic means 7.

EXAMPLES

[0080] In the first phase of analysis, the research activity concerned the design of silent-block dampers with polyurethane rods with a hardness between 40 Sh-A, 80 Sh-A assembled on supports applied to a Brovind Vibratori S.p.A. AL-80 linear vibrating base, with cast iron base and packs of flat leaf springs suitably modified with respect to the standard version. Once the model was validated by means of FEM simulation, the mechanical parts were built and assembled in the laboratory.

[0081] The experimental measurements carried out on the modified Brovind Vibratori S.p.A. AL-80, equipped with a two-way channel with a length of 1100 mm, confirmed the validity of the theoretical predictions obtained from the BROVIND SIS simulator, obtaining in the laboratory an isolation of the vibration from the fixing bench between 94% and 96%, AS channel=12 g; AS banquet [vertical]=0.7 g; AS banquet [horizontal]=0.4 g.

[0082] Considering the excellent results found, a second phase of designing the silent-block damping elements was started, in which it was planned to vulcanize the elastomer (polyurethane, 40 Sh-A) directly on the support, in order to create a mechanical component dedicated and ready to use, without the need for prior assembly. Also in this case, the model was validated with the BROVIND SIS simulator, before being built.

[0083] In addition, a further version of the support with silent-block damper was modeled that can be applied externally to existing or newly designed linear vibratory feeders, without the need for intervention and modifications to the vibrating structure. Like a kit, this solution could extend the advantages described to the case of linear systems: with single vibrating units already existing and in production; with vibrating units placed in cascade for feeding on very large transport channels, for example, up to two meters in length for each device; considering the close analogy of operation between linear and circular vibrating systems, the fixing method with silent-block can be considered valid and applicable without limitations also to a circular, resonant and unbalanced vibratory feeder.