DISTRIBUTOR

Abstract

In a feeder (1) for feeding sawn wood pieces (2) from an accumulating conveyor (3) to a drag conveyor (4), wherein the feeder (1) comprises at least one wheel (5) having an axis of rotation (6) and at least one control device, wherein at least one first clamping element (7) and at least one second clamping element (8) are fastened to the wheel (5), wherein the feeder (1) is designed to clamp a sawn wood piece (2) in place in a conveying region (9) between the first and the second clamping element (7, 8) during a rotation of the wheel (5) and to transport it in a clamped state along the conveying region (9), according to the invention the control device is designed to control the first clamping element (7) independently of the second clamping element (8).

Description

[0001] Allocator

[0002] The invention relates to a distributor for distributing sawn timber parts from an accumulating conveyor to a carrier conveyor according to the preamble of patent claim 1.

[0003] It is well known that in wood processing, lumber parts are transferred from a non-synchronized conveyor to a synchronized conveyor. The non-synchronized lumber parts are typically accumulated and picked up individually by the feeder. Typically, the feeder transfers the individual lumber parts to a carrier conveyor, with one lumber part being transferred to each carrier.

[0004] A disadvantage of currently known feeders is that if lumber parts are accidentally fed, they must be pushed back against the feeder's conveying direction, causing unrest among the accumulated boards. Furthermore, currently known feeders are designed for a specific size of lumber parts. If lumber parts with a different size than the set size are fed, the feeding is either limited or impossible without modifying the feeder. A further disadvantage of currently known feeders is that they often cannot accelerate the lumber parts sufficiently to transfer them directly to a carrier conveyor.As a result, an additional acceleration conveyor is often used, which is arranged between the feeder and the carrier conveyor in order to accelerate the sawn timber parts to the speed of the carrier conveyor.

[0005] The object of the invention is therefore to provide a distributor of the type mentioned at the outset, with which the disadvantages mentioned can be avoided, with which a controlled distribution of sawn timber parts of different thicknesses can be achieved and with which unrest in the sawn timber parts can be avoided if they are not distributed.

[0006] According to the invention, this is achieved by the features of patent claim 1. This results in the advantage that when clamping a sawn timber part located in the accumulation position, the clamping process can be individually adapted to the thickness of the sawn timber part. This also makes it possible to reduce surface damage to the sawn timber parts, so that sawn timber parts of different thicknesses and widths can be transferred from a non-synchronized conveying system to a synchronized conveying system in a controlled and gentle manner without any modifications to the feeder. By controlling the first clamping element independently of the second clamping element, disturbance among the accumulated sawn timber parts can be avoided when sawn timber parts are not being allocated, since the control device can be used to quickly and easily ensure that the sawn timber parts remain in the accumulated position.This means that if the sawn timber is not being allocated, it can remain in the accumulation position and does not have to be pushed back against the conveying direction. Furthermore, the independent control of the first and second clamping elements by the control device means that a clamping movement, which is carried out to clamp the sawn timber between the first and second clamping elements, can be quickly and easily adapted to different dimensions of sawn timber. This makes it possible to achieve as simultaneous contact between the sawn timber part and the two clamping elements as possible, which prevents any unrest when clamping the sawn timber part and therefore also other sawn timber parts in the accumulation position. This makes it possible to create an efficient and low-maintenance feeder with which sawn timber parts can be transferred from a non-clocked conveying system to a clocked conveying system in a controlled manner, even at a high cycle rate.

[0007] The invention further relates to a method according to claim 11.

[0008] The invention therefore has the further object of specifying a method of the type mentioned at the outset, with which the disadvantages mentioned can be avoided, with which a controlled allocation of sawn timber parts of different thicknesses can be achieved and with which unrest in the sawn timber parts can be avoided if they are not allocated.

[0009] According to the invention, this is achieved by the features of patent claim 11. The advantages of the method correspond to the advantages of the above-mentioned allocator.

[0010] The subclaims relate to further advantageous embodiments of the invention.

[0011] Express reference is hereby made to the wording of the patent claims, whereby the patent claims are incorporated into the description at this point by reference and are deemed to be reproduced verbatim.

[0012] The invention will be described in more detail with reference to the accompanying drawings, in which only preferred embodiments are shown by way of example. In the drawings:

[0013] Fig. 1 shows at least parts of a preferred embodiment of a distributor in a first position,

[0014] Fig. 2 shows the parts of the preferred embodiment of the distributor shown in Fig. 1 in a second position,

[0015] Fig. 3 shows the parts of the preferred embodiment of the distributor shown in Fig. 1 in a third position,

[0016] Fig. 4 shows the parts of the preferred embodiment of the distributor shown in Fig. 1 in a fourth position,

[0017] Fig. 5 shows the parts of the preferred embodiment of the distributor shown in Fig. 1 in a fifth position,

[0018] Fig. 6 shows a preferred embodiment of an allocation system,

[0019] Fig. 7 shows the section AA shown in Fig. 6 of the preferred embodiment of the allocation system.

[0020] 1 to 7 show at least parts of a preferred embodiment of a feeder 1 for feeding sawn timber parts 2 from an accumulating conveyor 3 to a carrier conveyor 4, wherein the feeder 1 comprises at least one wheel 5 with a rotation axis 6 and at least one control device, wherein at least one first clamping element 7 and at least one second clamping element 8 are fastened to the wheel 5, wherein the feeder 1 is designed to clamp a sawn timber part 2 in a conveying area 9 between the first and the second clamping element 7, 8 when the wheel 5 rotates and to transport it in a clamped state along the conveying area 9, wherein the control device is designed to control the first clamping element 7 independently of the second clamping element 8.

[0021] Furthermore, a distribution system 15 comprising an accumulating conveyor 3 and a carrier conveyor 4 is provided, wherein the distributor 1 is arranged between the accumulating conveyor 3 and the carrier conveyor 4 in order to transport a sawn timber part 2 from the accumulating conveyor 3 to the carrier conveyor 4.

[0022] Furthermore, a method is provided for allocating sawn timber parts 2 from an accumulating conveyor 3 to a carrier conveyor 4 with a distributor 1, wherein the distributor 1 comprises at least one wheel 5 with a rotation axis 6 and at least one control device, wherein at least one first clamping element 7 and at least one second clamping element 8 are fastened to the wheel 5, wherein upon rotation of the wheel 5 a sawn timber part 2 is clamped in a gripping area of ​​a conveying area 9 between the first clamping element 7 and the second clamping element 8 and is transported in a clamped state along the conveying area 9, wherein the first clamping element 7 is controlled by the control device independently of the second clamping element 8.

[0023] This has the advantage that when a sawn timber part 2 located in the accumulation position is clamped, the clamping process can be individually adapted to the thickness of the sawn timber part 2. This also makes it possible to reduce surface damage to the sawn timber parts 2, so that sawn timber parts 2 with different thicknesses and widths can be transferred from a non-clocked conveying system to a clocked conveying system in a controlled and gentle manner without any modifications to the feeder 1. By controlling the first clamping element 7 independently of the second clamping element 8, disturbance in the accumulated sawn timber parts 2 can be avoided when sawn timber parts 2 are not being allocated, since the sawn timber parts 2 can be easily and quickly controlled to remain in the accumulated position using the control device.This allows the sawn timber parts 2 to remain in the accumulation position if they are not allocated and do not need to be pushed back against the conveying direction. Furthermore, the independent control of the first and second clamping elements 7, 8 by the control device allows a clamping movement, which is carried out to clamp the sawn timber part 2 between the first and second clamping elements 7, 8, to be quickly and easily adapted to different dimensions of sawn timber parts 2. This allows the sawn timber part 2 to be contacted as simultaneously as possible by the two clamping elements 7, 8, which prevents any unrest during the clamping of the sawn timber part 2 and thus also of other sawn timber parts 2 in the accumulation position.This allows the creation of an efficient and low-maintenance feeder 1 with which sawn timber parts 2 can be transferred in a controlled manner from a non-clocked conveyor to a clocked conveyor, even at a high cycle rate.

[0024] Preferably, the conveying area 9 extends from the accumulating conveyor 3 to the carrier conveyor 4. Preferably, the conveying area 9 is the spatial area traversed by the sawn timber parts 2 during transport or conveying. Fig. 7 shows the section AA shown in Fig. 6 of a preferred embodiment of the distribution system 15, wherein the arrangement of the accumulating conveyor 3, the distributor 1, and the carrier conveyor 4 on the distribution system 15 is preferably shown, and the conveying area 9 is visible.

[0025] Preferably, the conveying directions of the accumulating conveyor 3, the feeder 1, and the carrier conveyor 4 are the same. The conveying direction is preferably the direction in which the sawn timber parts 2 are conveyed or distributed.

[0026] Preferably, the distributor 1 picks up the sawn timber part 2 in the pick-up area of ​​the conveying area 9. The pick-up area is in particular the area in which the sawn timber part 2 is clamped by the distributor 1. Preferably, at least one sawn timber part 2 is accumulated in the pick-up area of ​​the accumulating conveyor 3.

[0027] Preferably, the pick-up area is arranged at a first end of the conveying area 9, and a set-down area of ​​the conveying area 9 is arranged at a second end opposite the first end. Preferably, the set-down area is the area at which the distributor 1 releases the clamped sawn timber part 2.

[0028] The sawn timber parts 2 are preferably accumulated by the accumulating conveyor 3. The sawn timber parts 2 are preferably located in an accumulation position on the accumulating conveyor 3. In the accumulation position, the sawn timber parts 2 are preferably arranged in a row along the longitudinal sides of the sawn timber parts 2.

[0029] The accumulating conveyor 3 can preferably be designed as a conveyor belt and / or as a roller belt. The sawn timber parts 2 are preferably transported up to a stop arranged in the conveying area 9, in particular in the pick-up area.

[0030] Preferably, the carrier conveyor 4 can comprise a plurality of carriers 16. Preferably, the distributor 1 allocates one sawn timber part 2 per carrier 16.

[0031] Preferably, the accumulating conveyor 3 and / or the carrier conveyor 4 and / or the distributor 1 are designed as transverse conveyors. A transverse conveyor is, in particular, a conveyor that transports a sawn timber part 2 transversely to its longitudinal extent.

[0032] Preferably, it can be provided that the distribution system 15 comprises only the accumulation conveyor 3, the distributor 1 and the carrier conveyor 4.

[0033] Preferably, the distribution system 15 may include an acceleration conveyor arranged between the distributor 1 and the carrier conveyor 4. The acceleration conveyor can preferably accelerate the sawn timber parts 2 to a predeterminable speed.

[0034] It is provided that the distributor 1 comprises at least one wheel 5 with a rotation axis 6. Preferably, the wheel 5 can be designed as a disc, in particular with recesses.

[0035] It is provided that the distributor 1 comprises a first clamping element 7 and a second clamping element 8. The first and second clamping elements 7, 8 are fastened to at least one wheel 5. Preferably, the first clamping element 7 and / or the second clamping element 8 can be pivotally fastened to the wheel 5.

[0036] The distributor 1 can preferably comprise two wheels 5 with a common axis of rotation 6. Fig. 6 shows, by way of example, the preferred embodiment of the distributor system 15 with two identically designed wheels 5. Furthermore, Fig. 7 shows the section shown in Fig. 6 according to AA, wherein the wheels 5 shown in Fig. 6 have the same axis of rotation 6. Preferably, the two wheels 5 and the clamping elements 7, 8 fastened to the wheels 5 can be of identical design. This results in the advantage that the two wheels 5 can be operated essentially synchronously, whereby the sawn timber part 2 can be transferred into a cyclical conveying process in a particularly controlled manner.

[0037] The distributor 1 is designed to clamp a sawn timber part 2 between the first clamping element 7 and the second clamping element 8 and to hold it with the first clamping element 7 and the second clamping element 8. Preferably, the clamping of the sawn timber part 2 is caused by the interaction of the first and second clamping elements 7, 8.

[0038] Preferably, the first clamping element 7 and the second clamping element 8 together form a clamping unit. The clamping unit is preferably designed to clamp a single sawn timber part 2, in particular between the first clamping element 7 and the second clamping element 8.

[0039] The sawn timber part 2 preferably has a width, a thickness, and a length, wherein the length is greater than the width and the thickness. The sawn timber part 2 can preferably be a wood product produced by sawing round timber parallel to the trunk axis of the round timber. The sawn timber part 2 can preferably have a thickness of at least 6 mm.

[0040] The distributor 1 is designed to transport the sawn timber part 2 in the clamped state along the conveyor area 9. The sawn timber part 2 is preferably transported to the settling area. The sawn timber part 2 is preferably released from the clamped state by the distributor 1 in the settling area. It is provided that the distributor 1 comprises at least one control device. The control device is designed to control the first clamping element 7 independently of the second clamping element 8. In Figs. 6 and 7, the distributor system 15 with two wheels 5 is shown as an example, wherein the wheels 5 and the parts interacting with the wheels 5 are of identical design. In this case, it can preferably be provided that a separate control device is used for the first and second clamping elements 7, 8 fastened to each wheel 5. The distributor system 15 shown as an example in Fig. 6 therefore comprises two control devices.

[0041] Preferably, it can be provided that the control device comprises a first guide 10 with a first guide track 11 and that the first clamping element 7 for clamping the sawn timber part 2 in the conveying area 9 is guided in a first rotational range of the wheel 5 on the first guide track 11. This results in the advantage that, by controlling the first guide 10, it can be easily and quickly regulated whether or not sawn timber parts 2 should be allocated. As a result, if sawn timber 2 is not allocated, the sawn timber 2 can remain in the accumulation position without having to be pushed back against the conveying direction of the accumulation conveyor 3.

[0042] In Figs. 1 to 5, at least parts of the preferred embodiment of the distributor 1 are shown in different positions, wherein the first guide 10 with the first guide track 11 is visible. Furthermore, by comparing Figs. 1 to 5, it is clear how the first clamping element 7 for clamping the sawn timber part 2 in the conveying area 9 is guided in the first rotational range of the wheel 5 on the first guide track 11.

[0043] Preferably, the rotation range is a rotation angle of the wheel 5. The rotation range or the rotation angle is preferably less than a full revolution of the wheel 5, in particular less than 360 degrees.

[0044] Preferably, the first rotation range is the angle of rotation of the wheel 5 in which the first clamping element 7 is guided on the first guide track 11.

[0045] Preferably, the first rotational range of the wheel 5 is a maximum of 140 degrees, particularly preferably a maximum of 120 degrees, in particular a maximum of 100 degrees.

[0046] Preferably, the first rotational range of the wheel 5 is at least 40 degrees, particularly preferably at least 60, in particular at least 80 degrees.

[0047] Preferably, the first clamping element 7 can comprise a first roller 17, which first roller 17 is guided on the first guide 10, in particular on the first guide track 11. Fig. 1 shows an example of a first position of the preferred embodiment of the distributor 1. It can be seen that the first roller 17 is in contact with a start of the first guide track 11 and is guided on the first guide track 11. Fig. 2 shows an example of a second position of the preferred embodiment of the distributor 1, wherein the guiding of the first roller 17 on the first guide track 11 results in the first clamping element 7 coming into contact with the sawn timber part 2. Fig. 4 shows an example of a fourth position of the preferred embodiment of the distributor 1, wherein the first roller 17 has reached an end of the first guide track 11 and the sawn timber part 2 is released from the clamped state.5 shows, by way of example, a fifth position of the preferred embodiment of the distributor 1, wherein the first roller 17 is no longer guided on the first guide track 11 and the first rotation range has been left.

[0048] Preferably, the first rotation range is the angle of rotation of the wheel 5 in which the first roller 17 is guided on the first guide track 11.

[0049] Preferably, it can be provided that the control device comprises a second guide 12 with a second guide track 13 and that the second clamping element 8 for clamping the sawn timber part 2 in the conveying area 9 is guided in a second rotation range of the wheel 5 on the second guide track 13. This results in the advantage that a rapid adjustment of the clamping of the sawn timber parts 2 between the first and the second clamping element 7, 8 can be achieved. This makes it possible to control a clamping movement of the first and the second clamping element 7, 8 that is as simultaneous as possible, whereby a particularly controlled transfer of the sawn timber parts 2 into a cyclic conveying process can be achieved. The second rotation range is preferably the angle of rotation of the wheel 5 in which the second clamping element 8 is guided on the second guide track 13.

[0050] Preferably, the second rotation range of the wheel 5 is a maximum of 120 degrees, particularly preferably a maximum of 100 degrees, in particular a maximum of 80 degrees.

[0051] Preferably, the second rotation range of the wheel 5 is at least 40 degrees, particularly preferably at least 60, in particular at least 80 degrees.

[0052] The second clamping element 8 can preferably comprise a second roller 18, which second roller 18 is guided on the second guide 12, in particular on the second guide track 13. Fig. 1 shows an example of the first position of the preferred embodiment of the distributor 1, wherein the second roller 18 is in contact with a start of the second guide track 13 and this is guided. Fig. 2 shows an example of a second position of the preferred embodiment of the distributor 1, wherein the guiding of the second roller 18 on the second guide track 13 results in the second clamping element 8 coming into contact with the sawn timber part 2 and the sawn timber part 2 being clamped between the first and second clamping elements 7, 8. Fig. 3 shows an example of a third position of the preferred embodiment of the distributor 1, wherein the second roller 18 has reached an end of the second guide track 13.5 shows, by way of example, the fifth position of the preferred embodiment of the distributor 1, wherein the second roller 18 is no longer guided on the second guide track 13 and the second rotation range has been left.

[0053] Preferably, the second rotation range is the angle of rotation of the wheel 5 in which the second roller 18 is guided on the second guide track 13.

[0054] Preferably, the clamping force for clamping the sawn timber part 2 for the first and second clamping elements 7, 8 can be generated by guiding the first and second clamping elements 7, 8 on the first and second guide tracks 11, 13.

[0055] Preferably, the control device can comprise a control unit for controlling the first and second guides 10, 12, in particular for controlling the orientation and position of the first and second guideways 11, 13. The control unit can also preferably be referred to as a controller.

[0056] Preferably, it can be provided that the first and / or the second guide 10, 12 of the control device is pneumatically controlled.

[0057] Preferably, the control device may comprise a motor for controlling the first and / or second guide 10, 13. Preferably, the control unit may control the motor of the control device.

[0058] Preferably, the distributor 1 can comprise pneumatic cylinders attached to the wheel 5 for resetting the first and / or second clamping elements 7, 8. It can preferably be provided that the pneumatic cylinders are brought into an extended state by clamping the sawn timber part 2 and are returned to a retracted state by applying pressure. This return to the retracted state can be referred to as resetting the first and / or second clamping elements 7, 8.

[0059] Alternatively, resetting of the first and / or second clamping elements 7, 8 can also be carried out by means of springs for the first and / or second clamping elements 7, 8 instead of with pneumatic cylinders.

[0060] Preferably, the control device can be configured to control the first clamping element 7 and the second clamping element 8 such that the time difference between the point in time at which the first clamping element 7 comes into contact with the sawn timber part 2 and the point in time at which the second clamping element 8 comes into contact with the sawn timber part 2 is as small as possible. Preferably, the first clamping element 7 and the second clamping element 8 can contact the sawn timber part 2 essentially simultaneously. This allows for a particularly smooth and controlled clamping of the sawn timber part 2 between the first and second clamping elements 7, 8.

[0061] Preferably, the time difference between the time of contact of the first clamping element 7 with the sawn timber part 2 and the time of contact of the second clamping element 8 with the sawn timber part 2 can be less than 500 milliseconds, particularly preferably less than 100 milliseconds, in particular less than 10 milliseconds. Preferably, the first clamping element 7 can comprise a substantially planar clamping surface 14 for clamping the sawn timber part 2. Fig. 3 shows, by way of example, the third position of the preferred embodiment of the distributor 1, wherein, by way of example, the sawn timber part 2 is shown clamped between the clamping surface 14 of the first clamping element 7 and the second clamping element 8.This results in the advantage that a particularly controlled carrying of the sawn timber part 2 by the first clamping element 7 can be achieved because a particularly good clamping of the sawn timber part 2 between the first and the second clamping element 7, 8 can be achieved.

[0062] Preferably, the first clamping element 7 and / or the second clamping element 8 can be designed as an arm, and a pivoting movement of the arm can be predetermined by the control device. This results in the advantage of achieving a particularly simple and low-maintenance design of the clamping elements 7, 8.

[0063] Preferably, the arm of the first and / or second clamping element 7, 8 can extend away from the attachment of the first and / or second clamping element 7, 8 to the wheel 5.

[0064] Preferably, the first guide 10, in particular the first guide track 11, and / or the second guide 12, in particular the second guide track 13, can specify the pivoting movement of the arm of the first clamping element 7 and / or the second clamping element 8.

[0065] Preferably, the second clamping element 8, in particular the arm of the second clamping element 8, can be designed in a hook shape. Such a hook-shaped design of the second clamping element 8 is shown by way of example in Figs.

[0066] 1 to 7. This results in the advantage that differently dimensioned lumber can be clamped between the first and second clamping elements 7, 8 without any modification of the distributor 1.

[0067] Preferably, the first roller 17 can be fastened to the first clamping element 7 between the clamping surface 14 and the fastening of the first clamping element 7 to the wheel 5.

[0068] Preferably, the second clamping element 8 may comprise an extension, to which the second roller 18 is attached. Preferably, the extension may extend away from the attachment of the second clamping element 8 to the wheel 5.

[0069] Preferably, the extension and the arm of the second clamping element 8 can extend in different directions away from the attachment of the second clamping element 8 to the wheel 5.

[0070] Preferably, it can be provided that a plurality of first clamping elements 7 and a plurality of second clamping elements 8 are fastened to the wheel 5, and that the first clamping elements 7 are each guided in the first rotational range of the wheel 5 on the first guide track 11, and the second clamping elements 8 are each guided in the second rotational range of the wheel 5 on the second guide track 13. This results in the advantage that the highest possible cycle rate can be achieved for the controlled transfer of sawn timber parts 2 from a non-cycle conveyor to a cycle-controlled conveyor.

[0071] If the distributor 1 comprises more than one wheel 5, it can preferably be provided that several first clamping elements 7 and several second clamping elements 8 are fastened to each wheel 5.

[0072] Preferably, it can be provided that at least one driver 16 of the driver conveyor 4 moves in a settling area of ​​the conveying area 9 at a driver speed and that the first clamping element 7 and the second clamping element 8 release the sawn timber part 2 from the clamped state into the settling area. This results in the advantage that a transfer of the sawn timber parts 2 can be achieved directly to the driver conveyor 4, whereby a significantly faster and more controlled transfer of the sawn timber parts 2 to the driver conveyor 4 can be achieved even in the case of heavily deformed boards. This can significantly reduce the number of misalignments after the transfer on the driver conveyor 4, i.e. the movement of a sawn timber 2 which rotates in addition to the translation during conveyance.This allows for trouble-free operation even when different qualities of sawn timber 2 are used during allocation.

[0073] Preferably, the accumulating conveyor 3 can comprise a movable accumulating conveyor retention device in a receiving area of ​​the conveying area 9. This provides the advantage that the sawn timber parts 2 can rest in a predetermined position, whereby the sawn timber parts 2 can be quickly and easily clamped between the first and second clamping elements 7, 8.

[0074] The accumulation retention device can preferably be designed as a hook or as a stepped elevation. The accumulation retention device is preferably the stop in the conveying area 9 to which the accumulation conveyor 3 transports the sawn timber parts 2. Fig. 1 shows, by way of example, the sawn timber part 2 accumulated against a stepped elevation.

[0075] Preferably, the accumulation conveyor retention device can form a predeterminably removable stop for the accumulation conveyor 3.

[0076] Preferably, the lumber part 2 is transported by the accumulating conveyor 3 until it reaches the accumulating retention device. This lumber part 2 is then preferably clamped by the feeder 1, and the accumulating retention device is moved away from a retention position, whereby the accumulating retention device releases the clamped lumber part 2, which is then transported away by the feeder 1. The accumulating retention device is then moved back to the retention position to retain subsequent lumber parts 2 of the accumulating conveyor 3.

[0077] Alternatively, the accumulating conveyor 3 may preferably have a fixed stop, wherein the distributor 1 lifts the sawn timber part 2 over the fixed stop.

[0078] Preferably, the accumulating conveyor 3 comprises a sensor operatively connected to the feeder 1 for measuring the thickness of the lumber part 2, and the control device takes the measured thickness of the lumber part 2 into account when controlling the first and second clamping elements 7, 8. This results in the advantage that the clamping between the first and second clamping elements 7, 8 can be adapted particularly easily and quickly to lumber 2 of different thicknesses.

[0079] The sensor can preferably be part of a sensor system. The sensor system can preferably comprise a light barrier system. The sensor system can preferably be connected to the control device, wherein the control device can be configured to execute a clamping movement of the first and second clamping elements 7, 8 only when a sawn timber part 2 is detected by the sensor system in the gripping area.

[0080] Preferably, it can be provided that a driver 16 of the driver conveyor 4 moves in a settling area of ​​the conveying area 9 at a driver speed, that the sawn timber part 2 in the clamped state is accelerated substantially to the driver speed, and that the sawn timber part 2 is released from the clamped state into the settling area by the first clamping element 7 and the second clamping element 8. This results in the advantage that the sawn timber parts 2 can be transferred directly to the driver conveyor 4, whereby a significantly faster and more controlled transfer of sawn timber parts 2 to the driver conveyor 4 can be achieved even with heavily deformed boards. This can significantly reduce the number of misalignments. This makes it possible to achieve the most trouble-free operation possible during allocation, even with different qualities of sawn timber 2.

[0081] Preferably, the control device can take into account the thickness of the sawn timber part 2 when controlling the first and second clamping elements 7, 8. This results in the advantage that the sawn timber parts 2 can be clamped between the first and second clamping elements 7, 8 in a particularly controlled manner.

[0082] Preferably, the thickness of the sawn timber part 2 can be measured before the sawn timber part 2 is fed to the accumulating conveyor 3. Preferably, the measured thickness of the sawn timber part 2 can be specified to the control device. In this case, when allocating sawn timber 2 with the same thickness, the thickness of one sawn timber part 2 can advantageously be measured only once, wherein the allocator 1 can be adjusted to the measured thickness of the sawn timber part 2. As a result, for example, a first batch of sawn timber parts 2 with a first thickness can be fed to the accumulating conveyor 3, wherein the first thickness is specified to the control device or input to the control unit, and the control device takes the first thickness into account when clamping the sawn timber parts 2 of the first batch.Subsequently, a second batch of sawn timber parts 2 with a second thickness can be fed to the accumulating conveyor 3, wherein the second thickness is specified to the accumulating conveyor 3 or input to the control unit and the control device takes the second thickness into account when clamping the sawn timber parts of the second batch.

[0083] Preferably, the thickness of the sawn timber part 2 can be measured by a sensor of the accumulating conveyor 3 that is operatively connected to the feeder 1. This results in the advantage that the clamping between the first and second clamping elements 7, 8 can be adapted particularly easily and quickly to sawn timber 2 of different thicknesses.

[0084] The following are principles for understanding and interpreting the disclosure in question.

[0085] Characteristics are usually introduced with an indefinite article, "ein, eine, eines, einer." Therefore, unless the context indicates otherwise, "ein, eine, eines, einer" is not to be understood as a number.

[0086] The conjunction "or" is to be interpreted as inclusive and not exclusive. Unless the context indicates otherwise, "A or B" also includes "A and B," where "A" and "B" represent any characteristics.

[0087] By means of an ordering number, for example, "first," "second," or "third," a feature X or an object Y is distinguished in particular in multiple embodiments, unless otherwise defined by the disclosure of the invention. In particular, a feature X or object Y with an ordering number in a claim does not mean that an embodiment of the invention covered by this claim must have a further feature X or another object Y.

[0088] A "substantially" in connection with a numerical value includes a tolerance of ± 10% around the stated numerical value, unless the context requires otherwise.

[0089] For ranges of values, the endpoints are included unless the context indicates otherwise.

Claims

PATENT CLAIMS 1. Feeder (1) for feeding sawn timber parts (2) from a storage conveyor (3) to a conveying conveyor (4), wherein the feeder (1) comprises at least one wheel (5) with a pivot axis (6) and at least one control device, wherein at least one first clamping element (7) and at least one second clamping element (8) are attached to the wheel (5), wherein the feeder (1) is designed to clamp a sawn timber part (2) in a conveying area (9) between the first and the second clamping element (7, 8) when the wheel (5) is rotated and to transport it in a clamped state along the conveying area (9), characterized in that the control device is designed to control the first clamping element (7) independently of the second clamping element (8).

2. Distributor (1 ) according to claim 1 , characterized in that the control device comprises a first guide (10) with a first guide track (11 ) and that the first clamping element (7) for clamping the sawn timber part (2) in the conveying area (9) is guided in a first rotation area of ​​the wheel (5) on the first guide track (11 ).

3. Distributor (1 ) according to claim 1 or 2, characterized in that the control device comprises a second guide (12) with a second guide track (13) and that the second clamping element (8) for clamping the sawn timber part (2) in the conveying area (9) is guided in a second rotation area of ​​the wheel (5) on the second guide track (13).

4. Distributor (1 ) according to claims 2 and 3, characterized in that several first clamping elements (7) and several second clamping elements (8) are attached to the wheel (5) and that the first clamping elements (7) are guided on the first guide track (11 ) in the first rotation range of the wheel (5) and the second clamping elements (8) are guided on the second guide track (13) in the second rotation range of the wheel (5).

5. Distributor (1 ) according to one of claims 1 to 4, characterized in that the first clamping element (7) comprises a substantially flat clamping surface (14) for clamping the sawn timber part (2).

6. Distributor (1 ) according to one of claims 1 to 5, characterized in that the first clamping element (7) and / or the second clamping element (8) is designed as an arm and that a pivoting movement of the arm is specified by the control device.

7. Feeding system (15) comprising a storage conveyor (3) and a carrier conveyor (4), characterized in that a feeder (1) according to one of claims 1 to 6 is arranged between the storage conveyor (3) and the carrier conveyor (4) to transport a sawn timber part (2) from the storage conveyor (3) to the carrier conveyor (4).

8. Feeding system (15) according to claim 7, characterized in that at least one driver (16) of the driver conveyor (4) moves in a settling area of ​​the conveying area (9) at a driver speed and that the first clamping element (7) and the second clamping element (8) release the sawn timber part (2) from the clamped state into the settling area.

9. Allocation system (15) according to claim 7 or 8, characterized in that the accumulation conveyor (3) comprises a movable accumulation conveyor retention device in a capture area of ​​the conveying area (9).

10. Feeding system (15) according to one of claims 7 to 9, characterized in that the accumulating conveyor (3) comprises a sensor operatively connected to the feeder (1) for measuring the thickness of the sawn timber part (2) and that the control device takes into account the measured thickness of the sawn timber part (2) when controlling the first and the second clamping element (7, 8).

11. Method for dispensing sawn timber parts (2) from a storage conveyor (3) to a feeder conveyor (4) with a distributor (1), wherein the distributor (1) comprises at least one wheel (5) with a pivot axis (6) and at least one control device, wherein at least one first clamping element (7) and at least one second clamping element (8) are attached to the wheel (5), wherein, during a rotation of the wheel (5), a sawn timber part (2) is clamped in a gripping area of ​​a conveying area (9) between the first clamping element (7) and the second clamping element (8) and is transported in a clamped state along the conveying area (9), characterized in that the first clamping element (7) is controlled independently of the second clamping element (8) by the control device.

12. Method according to claim 11, characterized in that a driver (16) of the driver conveyor (4) moves in a settling area of ​​the conveying area (9) at a driver speed, that the sawn timber part (2) in the clamped state is accelerated substantially to the driver speed and that the sawn timber part (2) is released from the clamped state into the settling area by the first clamping element (7) and the second clamping element (8).

13. Method according to claim 11 or 12, characterized in that the control device takes into account the thickness of the sawn timber part (2) when controlling the first and the second clamping element (7, 8).

14. Method according to claim 13, characterized in that the thickness of the sawn timber part (2) is measured by a sensor of the accumulating conveyor (3) which is operatively connected to the feeder (1).