Segmented Scalper

Abstract

The invention relates to a scalper roller arrangement for leveling quantities of bulk material resting on a conveyor belt, comprising at least one scalper roller which is arranged substantially transversely to the orientation of the conveyor belt above it, wherein the scalper roller can be driven by a drive, and wherein the scalper roller is formed along its longitudinal extent, at least on its surface, from several scalper roller sections, and wherein the distance between the surface of each scalper roller section and the conveyor belt is variable independently of other scalper roller sections, wherein each scalper roller section is provided with removal elements for the bulk material on its sections that come into contact with the bulk material, wherein the scalper roller sections are each coupled with an axis-variable connecting element, and wherein a shaft element is arranged between each adjacent axis-variable connecting element.wherein a support arm is rotatably mounted on one side to each shaft element and on the other side to a support, wherein a lifting level adjustment device is arranged on each support arm.

Description

[0001] The invention relates to a scalper roller arrangement and the use of an axis-variable connecting element in a scalper roller arrangement.

[0002] Numerous scalper roller arrangements are known from the prior art. EP 2 535 158 A1 discloses a scalper roller arrangement for leveling bulk material quantities lying on a conveyor belt.

[0003] Problematic aspects of scalper roller arrangements known from the prior art for leveling quantities of bulk material lying on a conveyor belt, especially for leveling quantities of wood bulk material for the production of a wooden board, are the high energy consumption, the high susceptibility to failure and malfunctions, and especially the high maintenance intensity, for example maintenance sequences and long downtimes, especially production downtimes and production stoppages.

[0004] The invention is therefore based on the objective of providing a scalper roller arrangement that improves the distribution, in particular the cross-sectional profile, for example the density, especially the basis weight cross-sectional profile, and in particular the homogeneity of a material mat, especially a spreading mat, for example a bulk material mat. Furthermore, inaccuracies arising from the spreading process, especially spreading errors, should be corrected completely or partially, and in particular compensated for better, especially faster and more accurately. Moreover, the susceptibility to failure, especially malfunctions, should be improved, and maintenance, especially repair, should be improved, for example, simplified.

[0005] To solve this problem, the invention teaches a scalper roller arrangement, in particular a scalper roller device for leveling quantities of bulk material lying on a conveyor belt, in particular for leveling quantities of bulk wood material for the production of a wood panel, in particular a wood-based panel, comprising at least one scalper roller which is arranged substantially transversely, in particular approximately transversely to the orientation of the conveyor belt above it, in particular on the side of the bulk material lying on a conveyor belt facing away from the conveyor belt, wherein the scalper roller can be driven by a drive, in particular a scalper roller drive, for example an external drive, for example an external drive, in particular a shaft drive, and wherein the scalper roller is composed of several scalper roller sections along its longitudinal extent, at least on its surface.in particular, scalper roller segments are formed, and the distance between the surface of each scalper roller segment and the conveyor belt is variable independently of other scalper roller segments, wherein each scalper roller segment is provided with removal elements for the bulk material on its sections that come into contact with the bulk material, wherein the scalper roller segments are each coupled to an axis-variable connecting element, in particular in a torque-transmitting manner, for example in a rotation-effective manner, for example in a drive-effective manner, wherein a shaft element is arranged between each adjacent axis-variable connecting elements, in particular in a drive-effective manner, wherein a support arm is arranged on one side on each shaft element and on the other side on a support, in particular a torque compensation support, in particular in a rotatable manner.for example, it is mounted on a rotary bearing, with a lifting level adjustment device arranged on each support arm, particularly for level adjustment.

[0006] In the context of the present invention, an axis-variable connecting element is understood to be a connecting element that connects two radially offset shafts, in particular shafts that are not aligned with each other, and in particular connects them in a torque-transmitting manner, for example, in a drive-effective manner. For example, an axis-variable connecting element is selected from a group consisting of an adjustable shaft coupling, in particular a parallel crank coupling, for example a Schmidt coupling, a cardan coupling, a compensator, a bellows, an elastomer coupling, or a combination thereof.

[0007] Within the scope of the present invention, a stroke level adjustment device is understood to be a device with which the stroke, in particular the distance between the surface of each scalper roller section and the conveyor belt, and especially of bulk material quantities resting on the conveyor belt, can be adjusted, in particular varied, for example, leveled, independently of other scalper roller sections. For example, a stroke level adjustment device is selected from a group consisting of a mechanical adjustment device, a pneumatic adjustment device, a hydraulic adjustment device, an electrical adjustment device, for example, electric linear motors, or a combination thereof.

[0008] An advantage of the present invention is a long service life, in particular a long service life, for example of the scalper roller. Further advantages of the invention include reduced downtime / maintenance times and reduced production downtime.

[0009] A further advantage of the invention is low temperature sensitivity, in particular a low risk of overheating, for example of the drive. High energy efficiency and low power consumption, especially of the drive, are also advantageous aspects of the invention.

[0010] A further advantage of the present invention is simple, uncomplicated maintenance, in particular replacement time, for example when changing tools, in particular changing the abrasive element, for example in case of wear and / or changing the product / type, for example of a wooden board, in particular a wood-based panel.

[0011] According to a further embodiment of the invention, the outer diameter of the scalper roller, with respect to the radial offset between the scalper roller sections, has a ratio in the range of 1.5 to 3.5, preferably in the range of 1.7 to 3.0, particularly preferably in the range of 2.0 to 2.8.

[0012] Within the scope of the present invention, the outer diameter of the scalper roller is understood to be the outer diameter of the scalper roller without the removal element.

[0013] According to a further embodiment of the invention, the outer diameter of the scalper roller, in relation to the distance between the scalper roller sections, has a ratio in the range of 1.5 to 4.5, preferably in the range of 1.7 to 4.0, particularly preferably in the range of 2.0 to 3.7.

[0014] Within the scope of the present invention, the outer diameter of the scalper roller is understood to be the outer diameter of the scalper roller without the removal element.

[0015] According to a further embodiment of the invention, the scalper roller arrangement comprises a discharge device, in particular for discharging milled material. For example, a discharge device is selected from a group consisting of a mechanical discharge device, in particular a discharge screw, a chain conveyor, for example a scraper chain conveyor, a pneumatic discharge device, in particular a suction device, or a combination thereof.

[0016] According to a further embodiment of the invention, the scalper roller sections, in particular scalper roller segments, have a segmented outer shell, in particular an outer shell with two or more segments, for example a segmented shell surface.

[0017] According to a further embodiment of the invention, the removal elements are selected from a group of extensions, in particular rake tines, for example rake mandrels, rake points, rake hooks, claws, tool inserts, bars, in particular aligned in the longitudinal direction of the scalper roller, for example rectangular bars, triangular bars, projections, bristles, lamellae, cavities, in particular pockets or a combination thereof.

[0018] According to a further embodiment of the invention, the scalper roller, which can be driven by a drive, comprises as a drive a drive for rotation control of the scalper roller, wherein the drive is arranged on one side or both sides of the scalper roller, in particular the scalper roller can be driven synchronously on one side or both sides, especially both sides.

[0019] A further object of the invention is the use of an axis-variable connecting element in a scalper roller arrangement, in particular a scalper roller device for leveling quantities of bulk material lying on a conveyor belt, in particular for leveling quantities of bulk wood material for the production of a wood panel, in particular a wood-based panel, comprising at least one scalper roller which is arranged substantially transversely, in particular approximately transversely to the orientation of the conveyor belt above it, in particular on the side of the bulk material lying on a conveyor belt facing away from the conveyor belt, wherein the scalper roller can be driven by a drive, in particular an external drive, for example an external drive, in particular a shaft drive, and wherein the scalper roller is composed of several scalper roller sections along its longitudinal extent, at least on its surface.in particular, scalper roller segments are formed, and the distance between the surface of each scalper roller segment and the conveyor belt is variable independently of other scalper roller segments, wherein each scalper roller segment is provided with removal elements for the bulk material on its sections that come into contact with the bulk material, wherein the scalper roller segments are each coupled to an axis-variable connecting element, in particular in a torque-transmitting manner, for example in a rotationally effective manner, for example in a drive-effective manner, wherein a shaft element is arranged between each adjacent axis-variable connecting elements, in particular in a drive-effective manner, wherein a support arm is arranged on one side on each shaft element and on the other side on a support, in particular a torque compensation support, in each case in a rotationally supported manner, in particular rotatably mounted.for example, is rotatably mounted, wherein a lifting level adjustment device is arranged on each support arm, in particular for level adjustment, for variability, in particular for changing the distance between the surface of each scalper roller section and the conveyor belt independently of other scalper roller sections, and for torque transmission, in particular torque transmission, for example drive transmission to the scalper roller sections of the scalper roller.

[0020] In the context of the present invention, an axis-variable connecting element is understood to be a connecting element that connects two radially offset shafts, in particular shafts that are not aligned with each other, and in particular connects them in a torque-transmitting manner, for example, in a drive-effective manner. For example, an axis-variable connecting element is selected from a group consisting of an adjustable shaft coupling, in particular a parallel crank coupling, for example a Schmidt coupling, a cardan coupling, a compensator, a bellows, an elastomer coupling, or a combination thereof.

[0021] Within the scope of the present invention, a stroke level adjustment device is understood to be a device with which the stroke, in particular the distance between the surface of each scalper roller section and the conveyor belt, and especially of bulk material quantities resting on the conveyor belt, can be adjusted, in particular varied, for example, leveled, independently of other scalper roller sections. For example, a stroke level adjustment device is selected from a group consisting of a mechanical adjustment device, a pneumatic adjustment device, a hydraulic adjustment device, an electrical adjustment device, for example, electric linear motors, or a combination thereof.

[0022] The invention will now be explained in more detail by way of example with reference to drawings illustrating only one embodiment. These show: Fig. 1: A schematic oblique top view of a scalper roller arrangement for leveling quantities of bulk material lying on a conveyor belt according to a first embodiment, Fig. 2: A side schematic view of a scalper roller arrangement according to Fig. 1, Fig. 3: A section of a schematic longitudinal sectional view of a scalper roller arrangement parallel to the conveyor belt. Fig. 2, Fig. 4: A section of a schematic longitudinal sectional view of a scalper roller arrangement perpendicular to the conveyor belt. Fig. 2.

[0023] In Fig. Figure 1 shows the scalper roller arrangement 1 according to the invention with a drive 5, a conveyor belt 2 with a production direction P and bulk material quantities 3 lying on the conveyor belt 2.

[0024] In Fig. 2 is the scalper roller arrangement according to Fig. Figure 1 shows a scalper roller 4, which is arranged above the conveyor belt 2, essentially transversely to its orientation. The scalper roller 4 is formed along its longitudinal extent, at least on its surface, from several scalper roller sections 6, 6', 6'', 6'''', 6'''', 6''''''. Bulk material quantities 3 rest on the conveyor belt 2 with the production direction P. A lifting level adjustment device 12, 12', 12'' is arranged on each of the support arms 10, 10', 10'', 10''', 10'''', 10'''''. The side of each support arm 10, 10', 10'', 10''', 10'''', 10''''' facing the production direction P is rotatably mounted on a support 11. A discharge device 13 is shown on the side of the scalper roller 4 facing away from the production direction P.

[0025] In Fig. Figure 3 is a section of the scalper roller arrangement 1 according to Fig. Figure 2 shows that each scalper roller section 6, 6', 6'', 6''', 6'''', 6'''' is provided with removal elements 7, 7', 7''', 7'''', 7'''' on the sections that come into contact with the bulk material. The scalper roller sections 6, 6', 6'', 6''', 6'''', 6'''' are each coupled to an axis-variable connecting element 8, 8', 8'', 8'''. A shaft element 9, 9', 9'', 9''' is arranged between each adjacent axis-variable connecting element 8, 8', 8'', 8'''. The side of each support arm 10, 10', 10'', 10'''', 10'''', 10'''' that faces the scalper roller 4 is rotatably mounted on a shaft element 9, 9', 9'', 9''''. The discharge device 13 is shown on the side of the scalper roller 4 facing away from the production direction P.

[0026] In Fig. Figure 4 is a section of the scalper roller arrangement 1 according to Fig.Figure 2 shows the scalper roller 4, which is arranged above the conveyor belt 2, essentially transversely to its orientation. The scalper roller 4 is formed along its longitudinal extent, at least on its surface, from the scalper roller sections 6, 6', 6'', 6'''', 6'''', 6''''. Bulk material quantities 3 rest on the conveyor belt 2. Each scalper roller section 6, 6', 6'', 6''', 6'''', 6''''' is provided with the removal elements 7, 7', 7'', 7'''', 7'''' on the section that comes into contact with the bulk material quantity 3. A shaft element 9, 9', 9'', 9''' is arranged between each adjacent axially variable connecting element 8, 8', 8'', 8'''. The side of each support arm 10, 10', 10'', 10'''', 10'''', 10'''' that faces the scalper roller 4 is rotatably mounted on a shaft element 9, 9', 9'', 9''''. Reference symbol list: 1 Scalper roller arrangement 2 Conveyor belt 3 Bulk material quantities 4 Scalper roller 5 Drive 6, 6', 6'', 6''', 6'''', 6'''' Scalper roller section(s) 7, 7', 7'', 7''', 7'''' Abrasion element(s) 8, 8', 8'', 8''' axis variables connecting element(s) 9, 9', 9'', 9''' Wave element(s) 10, 10', 10'', 10''', 10'''', 10'''' Support arm(s) 11 Support 12, 12', 12'' Lift level adjustment device(s) 13 Discharge device P Production direction x Bulk material

Claims

[1] Scalper roller arrangement (1) for leveling quantities of bulk material (3) resting on a conveyor belt (2) comprising at least one scalper roller (4) which is arranged substantially transversely to the orientation of the conveyor belt (2) above it, wherein the scalper roller (4) can be driven by a drive (5) and wherein the scalper roller (4) is formed along its longitudinal extent, at least on its surface, from several scalper roller sections (6, 6', 6'', 6'''', 6'''', 6'''''') and that the distance between the surface of each scalper roller section (6, 6', 6'', 6'''', 6'''', 6'''''') and the conveyor belt (2) is variable independently of other scalper roller sections (6, 6', 6'', 6'''', 6'''', 6'''''') wherein each scalper roller section (6, 6', 6'', 6'''', 6'''', 6'''') is provided on its sections that come into contact with the bulk material with removal elements (7, 7', 7'', 7'''', 7'''') for the bulk material, wherein the scalper roller sections (6, 6', 6'', 6''', 6'''', 6'''') are each coupled to an axis-variable connecting element (8, 8', 8'', 8''''), wherein a wave element (9, 9', 9'', 9''') is arranged between each adjacent axis-variable connecting elements (8, 8', 8'', 8'''), wherein a support arm (10, 10', 10'', 10'''', 10'''', 10'''') is arranged in a rotational bearing on one side at each shaft element (9, 9', 9'', 9'''') and on the other side at a support (11), wherein a lifting level adjustment device (12, 12', 12'') is arranged on each support arm (10, 10', 10'', 10'''', 10'''', 10''''''). [2] Scalper roller arrangement (1) according to claim 1, characterized by, that the outer diameter of the scalper roller (4) with respect to the radial offset between the scalper roller sections (6, 6', 6'', 6'''', 6'''', 6'''''') has a ratio in the range of 1.5 to 3.5, preferably in the range of 1.7 to 3.0, particularly preferably in the range of 2.0 to 2.

8. [3] Scalper roller arrangement (1) according to one of claims 1 to 2, characterized by , that the outer diameter of the scalper roller (4) has a ratio in the range of 1.5 to 4.5, preferably in the range of 1.7 to 4.0, particularly preferably in the range of 2.0 to 3.7, in relation to the distance between the scalper roller sections (6, 6', 6'', 6'''', 6'''', 6''''''). [4] Scalper roller arrangement (1) according to any one of claims 1 to 3, characterized by , that the scalper roller arrangement (1) comprises a discharge device (13). [5] Scalper roller arrangement (1) according to any one of claims 1 to 4, characterized by, that the scalper roller sections (6, 6', 6'', 6'''', 6'''', 6'''') have a segmented outer shell. [6] Scalper roller arrangement (1) according to any one of claims 1 to 5, characterized by , that the removal elements (7, 7', 7'', 7''', 7'''') are selected from a group of projections, in particular rake tines, for example rake mandrels, rake points, rake hooks, claws, tool inserts, bars, in particular aligned in the longitudinal direction of the scalper roller, for example rectangular bars, triangular bars, projections, bristles, lamellae, cavities, in particular pockets or a combination thereof. [7] Scalper roller arrangement (1) according to any one of claims 1 to 6, characterized by, that the scalper roller (4) which can be driven by a drive (5) comprises as drive (5) a drive (5) for rotation control of the scalper roller (4), wherein the drive (5) is arranged on one side or both sides of the scalper roller (4), in particular the scalper roller (4) can be driven synchronously on one side or both sides, in particular both sides. [8] Use of an axis-variable connecting element (8, 8', 8'', 8'''') in a scalper roller arrangement (1) according to any one of claims 1 to 7, for changing the distance between the surface of each scalper roller section (6, 6', 6'', 6'''', 6'''', 6'''') and the conveyor belt (2) independently of other scalper roller sections (6, 6', 6'', 6'''', 6'''', 6'''''') and for transmitting torque to the scalper roller sections (6, 6', 6'', 6'''', 6'''', 6'''''') of the scalper roller (4).

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