CA1277682C - Device for piecemeal transversal feed of longish objects, preferablywood pieces - Google Patents
Device for piecemeal transversal feed of longish objects, preferablywood piecesInfo
- Publication number
- CA1277682C CA1277682C CA000526880A CA526880A CA1277682C CA 1277682 C CA1277682 C CA 1277682C CA 000526880 A CA000526880 A CA 000526880A CA 526880 A CA526880 A CA 526880A CA 1277682 C CA1277682 C CA 1277682C
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- Canada
- Prior art keywords
- support path
- feeding arrangement
- feeding
- support
- path
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
A device for piecemeal transversal feed of wood pieces from a receiving place (1) to a delivery place (2) com-prises a feeding arrangement (4) and a support path (5), both of which extend upwardly with a step-like consti-tution. The feeding arrangement is displaceable to and fro along the support path, so that wood pieces suppor-ted by the steps (12, 13, 20) of the feeding arrangement are moved successively upwardly on the support path (5).
steps (6, 21) so as to finally be emitted over the highest point of the support path.
steps (6, 21) so as to finally be emitted over the highest point of the support path.
Description
I
A device for piecemeal transversal feed of longish objects,' g~eferably wood pieces FIELD OF THE INVENTION AND PRIOR ART
The invention concerns a device of the kind defined in the preamble of claim 1.
Such a device is known through t38 A 1 256 5p9. 2n the operating of this device two or rilore objects will probably after a certain operating time be delivered at the same tune. If two or more objects are displaced with the first seat all of them will fall down and come into rest in the essentially greater, third seat. Perhaps all of them are p not displaced at the same time with this seat to the thereafter following, second seat in the following opera-ting step, but one can count upon that after a certain period of time nearly all seats will comprise more than one object, and accordingly piecemeal feed is no longer taking place.
SUMMARY OF THE INVENTION
Aln object of an aspect of the present invention is to develop the device already known in such a way, that it gets a high reliability with respect to the piecemeal feed.
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1a An aspect of the invention is as follows:
A device for piecemeal transversal feed of longish objects, preferably wood pieces, from a receving place to a delivery place, comprising a feeding arrangement, which is movable frwn the receiving place so as to feed the objects along a support path having a step-like constitution with at least one step, a driving arrangement being arranged to set the feeding arrangement in a motion to and fro, the length of which is less than the length of the support ZO path, said feeding arrangement having also a step-like constitution with at least two steps, the feeding arrangement being co-ordinated with the support path so as to achieve ttlat the hinder step of the feeding arrangement seen in the feed direction and the support path portion located ahead of said step of the support path upon movement of the feeding arrangement form a first seat for receiving an object, which is displaceable along said support path portion by the movement of the feeding arrangement at the same time as the second step of the feeding arrangem~nt and tire support path portion located behind the support path step form a second seat for receiving an object, which seat also is displaceable along the latter support path portion by the movement of the feeding arrang~ment, said device being so constructed that when an object located in the first seat is reaching the support path step it will move to abutment against the portion of the feeding arrangement located between its.two steps upon influence of the gravitation and be held in a third seat daring the backward mov~ment of the feeding arrangement, the latter seat being formed by a part of the support path step and the portion located between the two Ib steps of the feeding arrangement, and be received in the second seat when the second step of the feeding arrangement has moved back and is moving forwardly again, the improvement comprising that the movement path of the feeding arrangement is substantially rectilinear and parallel to the support path portions located behind and.
ahead of the support path step respectively, that the suppoxt path comprises an inclined rising in the direction from the receiving place to the delivery place, and that to the parts of the feeding arrangement and the support path steps participating in the forming of the three seats are projecting approximately equally, viewed perpendicularly to the longitudinal direction of the support path, beyond the respective parts of the support path and the feeding arrangement respectively also participating in the forming of the seats.
$RIEF DESCRIPTION OF THE DRAWINGS
With reference to the appended drawings, below follows specific description of an example of an embodiment according to the invention.
In the drawings:
fig 1 is a perspective view of a part of the device accor-ding to the invention, fig 2 is partially cross-sectioned view in the direction of the arrow A. in fig 4, fig 3 is a cross-section through a part of the device along the line III-III in fig 2, and fig 4 is a side view of the device from the right in fig 1 with additional elements of the device shown.
DETAILED DESCRIP~.CION OF A PREFERRED EMBODIMENT
The device illustrated in the drawings is mainly intended .
far piecemeal transversal. feed of wood pieces, but other longish objects may also be concerned. "Transversal feed"
means a feed which is substantially perpendicular to the longitudinal direction of the wood pieces. The feed is intended to be carried out from a receiving place 1 to a delivery place 2 (fig 4). The receiving place may have the character of a pocket, which is fed with wood pieces, which may have the character of boards as well as round-wood or logs, from a conveyor 3. At the receiving place the wood pieces are arranged-in parallel, although they are lying in a stack. The delivery plane 2 may be constituted by a longitudinal conveyor, i.e. a conveyor for displacing the wood pieces in the longitudinal direction.
The device comprises a feeding arrangement generally in-dicated through 4, said arrangement being displacable from the receiving place in an inclined rising movement for feeding the wood pieces along a support path also inclined rising and generally indicated with 5. The sup-port path 5 has a step-like constitution with a step 6, which on its, both sides has inclined portions 7, B, which axe substantially parallel to each other. The step 6 and the portion 8 are forming a wood piece receiver opening up upwardly. The receiving place 1 is formed by said support path portion 7 and an additional support portion 9, which together with the poxtion 7 are forming a V-shaped pocket opening up upwardly.
A driving arrangement comprising two power means 10 is arranged to set the feeding arrangement 4 in a motion to and fro (arrow 11, fig 3), the length of which being below the length of the support path 5. The feeding ar-rangement 4 has also a step-like constitution with two steps i2, 73. Between these steps there is a portion 14.
The steps 12, 13 are substantially parallel to each other and to the step 6 and the support surface 9. The portions 7 and 14 are also arranged substantially in parallel and the distance between the steps 12, 73 is substantially just as great as the distance between the steps 6 and the support surface 9. Above the steps 13 the feeding arrangement has a portion 15, which is substantially pa-ra11e1 to and just as long as the portion 8.
The feeding arrangment is co-ordinated with the support path so as to achieve that the lower step 12 of the fee-ding arrangement and the support path portion 7, upon movement of the feeding arrangement upwardly from its lower position, form a seat 16 (fig 4) opening up upward-ly for receiving a wood piece. This seat is displacable along the support path portion 7 by the movement of the feeding arrangement, at the same time as the steps 13 and the support path portion 8 form an additional seat 17 opening up upwardly for a wood piece, which seat also is displacable upwardly along the portion 8 by the movement of the feeding arrangement. Furthermore, the device is so constituted that a wood piece 18a loca-ted in the seat 16 in reaching the step 6 of the support path will be laid on this, in order to be received in the seat 17 when the step 13 of the feeding arrangment has moved downwardly and again is moving upwardly (see the position indicated through 18c for the wood piece).
The portion 74 of the feeding arrangment is formed and localized with respect to the support path 5 in such a way that when a wood piece located in the seat 16 is reaching the step 6 it will move to abutment against the portion 14 upon influence of the gravitation (see the position for the wood piece indicated through 18b in fig 4) and be held in a third seat 19 during the downward movement of the feeding arrangement, the latter seat being formed by a part of the support path step 6 and the por-tion 14 of the feeding arrangement.
In the example the feeding arrangement 4 has an additio-nal step 20, which is substantially parallel to wn addi-tional step 21 in the support path. In upward movement of the feeding arrangement 4 a part of the step 20 is together With the portion 22 located above the step 21 of the support path 5 forming an additional seat 23 for a wood piece, which in the final phase of upward mavement of the feeding arrangement 4 is pushed over the uppermost portion of the support path 24 and lands on 'the conveyor 2.
fihe surface portions 7, 8, 14, 15 and 22 are in the examp-le inclined to the same degree in one direction as the steps 12, 13 and 20 of the feeding arrangement and the support path steps 6, 21 and the support path 9 are in-clined in the other direction.
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As appears best from fig 1 the support path 5 is consti-tuted by several, in the example five support parts 25, each of which comprises the portions and steps described previously end which are disposed substantially parallel to each other and at a mutually distance in the transver-sal direction of the support path. The feeding arrange-:
ment 4 comprises five feeding means 26, each of which is located between two adjacent support parts 25 and com-prises the steps 12, 13 and 20 as well as the support portions 14 and 15 and also a support portion 46 below the lowermost step 12. At least the steps 12, 13 and 20 axe extending substantially continuously from the proxi-mity of one of the adjacent support parts to the proxi-mity of the other adjacent support part. Preferably, the surface portion 14, 15 and 46 located at a lower level than the respective steps are also extending substantial-ly continuously between the two adjacent support parts 25. The step portions 12, 13 och 20 and the surf-ace por-tions 14, 15 and 46 are laterally secured to end walls 27 (fig 2), which are located comparatively close to the support parts 25. In the region of the transition bet-ween the steps 12 and 13 and the surface portions 14 and 15 lciaated thereabove each of the feeding means 26 is provided with an opening 28, which allows the passing-through of bark pieces and the like'so that' . these are not disturbing the function. In this case the lower parts of the surface portions 14 and 15 as well as the lower parts of the por-tion 46 may be slightly bent downwardly,~whieh appears best from fig 3.
The different disc-like support parts 25 are supported by two transversal supporting beams 29. These beams are included in a frame 30, which suitably supports the con-veyor 2 and also the disc-like parts 31, which are arran-ged parallelly to and along the support parts 25 and are forming the support portions 9. The end'.walls 27 of the 6 ~,~:'~'~68~
individual feeding means 26 are interconnected by trans-versal beams 32. Two pairs of_ disc pieces 33 are secured to these beams, each pair of disc pieces forming suspen-sion means for two wheels 34, which are rolling on the top of the longitudinal beams 35. These beams 35 are sup-ported by the beams 29 through adjusting arrangements 36 of the screw/nut type well-known per se, which makes it possible to adjust the feeding arrangement with respect to the suppoxt path in a substantially vertical plane and in a direction substantially perpendiculax to the direction of motion of the feeding arrangement (arrow 91, fig 3). Thus, it is possible to adjust the length of the projection of the surface portions 46, 14 and 15 beyond the corresponding support path portion 7, 8 and 22 respectively. Such an adjustment should be done so as to make the seats 16, 1?, 19 etc substantially equally great, i.e. so that the parts of the steps 12, 13 and 6 of the feeding arrangement and the support path res-pectively participating in the forming of the three seats 16, 17 and 19 are projecting substantially equally, viewed perpendicularly to the longitudinal direction of the sup-port path, beyond the portion 7, B and 14 respectively of the support path and the feeding arrangement respec-tively also participating in the forming of the seats.
The power means 10 in the form of hydraulic cylinders are acting between the frame and the displacable feeding arrangement.
The portions D of the support parts 25 may be toothed in an indicated'manner, since this gives rise to rota-tion of a wood piece during the displacement over said portion and such a rotation reduces the risk of unintended transferring of two wood pieces in one and the same seat 17 ('fig 4?.
A sensing arrangement of a kind known per se, for example -~ w 3,2'T768'~
a photo cell, may be arranged to sense it a wood piece already is located on the conveyor 2, and the sensing arrangement may be adapted to, upon occurence of a wood piece on the conveyor, stop the displacement of the fee-ding arrangement 4 in an intermediate position, in which a wood piece is supported by the uppermost step 20 of the feeding arrangement comparatively close to the highest point of the support path 5 and in a position indicated at 18e in fig 4. As soon as the sensing arrangment has registered that the conveyor 2 is free to receive a wood piece again, the feeding arrangement can be started and the next wood piece can be delivered onto the conveyor with an infinitesimal loss of time.
Accordingly, the wood pieces will be transported succes-sively upwards the support path 5 during the operation of the device. As it appears from the dash dotted posi-tion of the feeding arrangement in fig 4, a wood piece will be conveyed in the seat 16 in the upward movement thereof. Further wood pieces can simultaneously be moved upwardly in the seats 17 and 23. When the step 12 of the feeding arrangement is reaching the support path step 6 the wood piece can roll downwardly to abutment against the support surfaces 19 of the feeding arrangement into the position at 18b, which corresponds to the position of the feeding arrangement shown with the continuous Li-nes in fig 4, which is the uppermost position thereof.
At the moment of the downward movement of the feeding arrangement following thereupon, the wood piece will be able to roll downwardly to abutment against the portion 8, when the step 13 of the feeding arrangement is reaching the support path step 6. When the feeding arrangement is moving further downwardly 'the step 13 will move the wood piece upwardly until the wood piece is delivered on 'the support path step 21, from which the wood piece will be moved upwardly, when the feeding arrangement is moving g upwardly again. after a return stroke, and it will finally roll onto the conveyor 2. By means of an appropriate adjus,-ment of the adjusting arrangements 36 in relation to the existing diameter range of the wood pieces, it is possible to obtain a very reliable piecemeal feed of the wood pie-ces. If two waod pieces would be conveyed by the step 12 upwardly to the support path steps 6 a repeated upward movement of the feeding arrangement will after a return stroke cause one of the wood pieces to fall down into the pocket formed by the surface portions 7 and 9. The more steps the feeding arrangement and the support path comprise the more reliable the function.
The device may of course be modified in several ways within the scope of the invention.
A device for piecemeal transversal feed of longish objects,' g~eferably wood pieces FIELD OF THE INVENTION AND PRIOR ART
The invention concerns a device of the kind defined in the preamble of claim 1.
Such a device is known through t38 A 1 256 5p9. 2n the operating of this device two or rilore objects will probably after a certain operating time be delivered at the same tune. If two or more objects are displaced with the first seat all of them will fall down and come into rest in the essentially greater, third seat. Perhaps all of them are p not displaced at the same time with this seat to the thereafter following, second seat in the following opera-ting step, but one can count upon that after a certain period of time nearly all seats will comprise more than one object, and accordingly piecemeal feed is no longer taking place.
SUMMARY OF THE INVENTION
Aln object of an aspect of the present invention is to develop the device already known in such a way, that it gets a high reliability with respect to the piecemeal feed.
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1a An aspect of the invention is as follows:
A device for piecemeal transversal feed of longish objects, preferably wood pieces, from a receving place to a delivery place, comprising a feeding arrangement, which is movable frwn the receiving place so as to feed the objects along a support path having a step-like constitution with at least one step, a driving arrangement being arranged to set the feeding arrangement in a motion to and fro, the length of which is less than the length of the support ZO path, said feeding arrangement having also a step-like constitution with at least two steps, the feeding arrangement being co-ordinated with the support path so as to achieve ttlat the hinder step of the feeding arrangement seen in the feed direction and the support path portion located ahead of said step of the support path upon movement of the feeding arrangement form a first seat for receiving an object, which is displaceable along said support path portion by the movement of the feeding arrangement at the same time as the second step of the feeding arrangem~nt and tire support path portion located behind the support path step form a second seat for receiving an object, which seat also is displaceable along the latter support path portion by the movement of the feeding arrang~ment, said device being so constructed that when an object located in the first seat is reaching the support path step it will move to abutment against the portion of the feeding arrangement located between its.two steps upon influence of the gravitation and be held in a third seat daring the backward mov~ment of the feeding arrangement, the latter seat being formed by a part of the support path step and the portion located between the two Ib steps of the feeding arrangement, and be received in the second seat when the second step of the feeding arrangement has moved back and is moving forwardly again, the improvement comprising that the movement path of the feeding arrangement is substantially rectilinear and parallel to the support path portions located behind and.
ahead of the support path step respectively, that the suppoxt path comprises an inclined rising in the direction from the receiving place to the delivery place, and that to the parts of the feeding arrangement and the support path steps participating in the forming of the three seats are projecting approximately equally, viewed perpendicularly to the longitudinal direction of the support path, beyond the respective parts of the support path and the feeding arrangement respectively also participating in the forming of the seats.
$RIEF DESCRIPTION OF THE DRAWINGS
With reference to the appended drawings, below follows specific description of an example of an embodiment according to the invention.
In the drawings:
fig 1 is a perspective view of a part of the device accor-ding to the invention, fig 2 is partially cross-sectioned view in the direction of the arrow A. in fig 4, fig 3 is a cross-section through a part of the device along the line III-III in fig 2, and fig 4 is a side view of the device from the right in fig 1 with additional elements of the device shown.
DETAILED DESCRIP~.CION OF A PREFERRED EMBODIMENT
The device illustrated in the drawings is mainly intended .
far piecemeal transversal. feed of wood pieces, but other longish objects may also be concerned. "Transversal feed"
means a feed which is substantially perpendicular to the longitudinal direction of the wood pieces. The feed is intended to be carried out from a receiving place 1 to a delivery place 2 (fig 4). The receiving place may have the character of a pocket, which is fed with wood pieces, which may have the character of boards as well as round-wood or logs, from a conveyor 3. At the receiving place the wood pieces are arranged-in parallel, although they are lying in a stack. The delivery plane 2 may be constituted by a longitudinal conveyor, i.e. a conveyor for displacing the wood pieces in the longitudinal direction.
The device comprises a feeding arrangement generally in-dicated through 4, said arrangement being displacable from the receiving place in an inclined rising movement for feeding the wood pieces along a support path also inclined rising and generally indicated with 5. The sup-port path 5 has a step-like constitution with a step 6, which on its, both sides has inclined portions 7, B, which axe substantially parallel to each other. The step 6 and the portion 8 are forming a wood piece receiver opening up upwardly. The receiving place 1 is formed by said support path portion 7 and an additional support portion 9, which together with the poxtion 7 are forming a V-shaped pocket opening up upwardly.
A driving arrangement comprising two power means 10 is arranged to set the feeding arrangement 4 in a motion to and fro (arrow 11, fig 3), the length of which being below the length of the support path 5. The feeding ar-rangement 4 has also a step-like constitution with two steps i2, 73. Between these steps there is a portion 14.
The steps 12, 13 are substantially parallel to each other and to the step 6 and the support surface 9. The portions 7 and 14 are also arranged substantially in parallel and the distance between the steps 12, 73 is substantially just as great as the distance between the steps 6 and the support surface 9. Above the steps 13 the feeding arrangement has a portion 15, which is substantially pa-ra11e1 to and just as long as the portion 8.
The feeding arrangment is co-ordinated with the support path so as to achieve that the lower step 12 of the fee-ding arrangement and the support path portion 7, upon movement of the feeding arrangement upwardly from its lower position, form a seat 16 (fig 4) opening up upward-ly for receiving a wood piece. This seat is displacable along the support path portion 7 by the movement of the feeding arrangement, at the same time as the steps 13 and the support path portion 8 form an additional seat 17 opening up upwardly for a wood piece, which seat also is displacable upwardly along the portion 8 by the movement of the feeding arrangement. Furthermore, the device is so constituted that a wood piece 18a loca-ted in the seat 16 in reaching the step 6 of the support path will be laid on this, in order to be received in the seat 17 when the step 13 of the feeding arrangment has moved downwardly and again is moving upwardly (see the position indicated through 18c for the wood piece).
The portion 74 of the feeding arrangment is formed and localized with respect to the support path 5 in such a way that when a wood piece located in the seat 16 is reaching the step 6 it will move to abutment against the portion 14 upon influence of the gravitation (see the position for the wood piece indicated through 18b in fig 4) and be held in a third seat 19 during the downward movement of the feeding arrangement, the latter seat being formed by a part of the support path step 6 and the por-tion 14 of the feeding arrangement.
In the example the feeding arrangement 4 has an additio-nal step 20, which is substantially parallel to wn addi-tional step 21 in the support path. In upward movement of the feeding arrangement 4 a part of the step 20 is together With the portion 22 located above the step 21 of the support path 5 forming an additional seat 23 for a wood piece, which in the final phase of upward mavement of the feeding arrangement 4 is pushed over the uppermost portion of the support path 24 and lands on 'the conveyor 2.
fihe surface portions 7, 8, 14, 15 and 22 are in the examp-le inclined to the same degree in one direction as the steps 12, 13 and 20 of the feeding arrangement and the support path steps 6, 21 and the support path 9 are in-clined in the other direction.
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As appears best from fig 1 the support path 5 is consti-tuted by several, in the example five support parts 25, each of which comprises the portions and steps described previously end which are disposed substantially parallel to each other and at a mutually distance in the transver-sal direction of the support path. The feeding arrange-:
ment 4 comprises five feeding means 26, each of which is located between two adjacent support parts 25 and com-prises the steps 12, 13 and 20 as well as the support portions 14 and 15 and also a support portion 46 below the lowermost step 12. At least the steps 12, 13 and 20 axe extending substantially continuously from the proxi-mity of one of the adjacent support parts to the proxi-mity of the other adjacent support part. Preferably, the surface portion 14, 15 and 46 located at a lower level than the respective steps are also extending substantial-ly continuously between the two adjacent support parts 25. The step portions 12, 13 och 20 and the surf-ace por-tions 14, 15 and 46 are laterally secured to end walls 27 (fig 2), which are located comparatively close to the support parts 25. In the region of the transition bet-ween the steps 12 and 13 and the surface portions 14 and 15 lciaated thereabove each of the feeding means 26 is provided with an opening 28, which allows the passing-through of bark pieces and the like'so that' . these are not disturbing the function. In this case the lower parts of the surface portions 14 and 15 as well as the lower parts of the por-tion 46 may be slightly bent downwardly,~whieh appears best from fig 3.
The different disc-like support parts 25 are supported by two transversal supporting beams 29. These beams are included in a frame 30, which suitably supports the con-veyor 2 and also the disc-like parts 31, which are arran-ged parallelly to and along the support parts 25 and are forming the support portions 9. The end'.walls 27 of the 6 ~,~:'~'~68~
individual feeding means 26 are interconnected by trans-versal beams 32. Two pairs of_ disc pieces 33 are secured to these beams, each pair of disc pieces forming suspen-sion means for two wheels 34, which are rolling on the top of the longitudinal beams 35. These beams 35 are sup-ported by the beams 29 through adjusting arrangements 36 of the screw/nut type well-known per se, which makes it possible to adjust the feeding arrangement with respect to the suppoxt path in a substantially vertical plane and in a direction substantially perpendiculax to the direction of motion of the feeding arrangement (arrow 91, fig 3). Thus, it is possible to adjust the length of the projection of the surface portions 46, 14 and 15 beyond the corresponding support path portion 7, 8 and 22 respectively. Such an adjustment should be done so as to make the seats 16, 1?, 19 etc substantially equally great, i.e. so that the parts of the steps 12, 13 and 6 of the feeding arrangement and the support path res-pectively participating in the forming of the three seats 16, 17 and 19 are projecting substantially equally, viewed perpendicularly to the longitudinal direction of the sup-port path, beyond the portion 7, B and 14 respectively of the support path and the feeding arrangement respec-tively also participating in the forming of the seats.
The power means 10 in the form of hydraulic cylinders are acting between the frame and the displacable feeding arrangement.
The portions D of the support parts 25 may be toothed in an indicated'manner, since this gives rise to rota-tion of a wood piece during the displacement over said portion and such a rotation reduces the risk of unintended transferring of two wood pieces in one and the same seat 17 ('fig 4?.
A sensing arrangement of a kind known per se, for example -~ w 3,2'T768'~
a photo cell, may be arranged to sense it a wood piece already is located on the conveyor 2, and the sensing arrangement may be adapted to, upon occurence of a wood piece on the conveyor, stop the displacement of the fee-ding arrangement 4 in an intermediate position, in which a wood piece is supported by the uppermost step 20 of the feeding arrangement comparatively close to the highest point of the support path 5 and in a position indicated at 18e in fig 4. As soon as the sensing arrangment has registered that the conveyor 2 is free to receive a wood piece again, the feeding arrangement can be started and the next wood piece can be delivered onto the conveyor with an infinitesimal loss of time.
Accordingly, the wood pieces will be transported succes-sively upwards the support path 5 during the operation of the device. As it appears from the dash dotted posi-tion of the feeding arrangement in fig 4, a wood piece will be conveyed in the seat 16 in the upward movement thereof. Further wood pieces can simultaneously be moved upwardly in the seats 17 and 23. When the step 12 of the feeding arrangement is reaching the support path step 6 the wood piece can roll downwardly to abutment against the support surfaces 19 of the feeding arrangement into the position at 18b, which corresponds to the position of the feeding arrangement shown with the continuous Li-nes in fig 4, which is the uppermost position thereof.
At the moment of the downward movement of the feeding arrangement following thereupon, the wood piece will be able to roll downwardly to abutment against the portion 8, when the step 13 of the feeding arrangement is reaching the support path step 6. When the feeding arrangement is moving further downwardly 'the step 13 will move the wood piece upwardly until the wood piece is delivered on 'the support path step 21, from which the wood piece will be moved upwardly, when the feeding arrangement is moving g upwardly again. after a return stroke, and it will finally roll onto the conveyor 2. By means of an appropriate adjus,-ment of the adjusting arrangements 36 in relation to the existing diameter range of the wood pieces, it is possible to obtain a very reliable piecemeal feed of the wood pie-ces. If two waod pieces would be conveyed by the step 12 upwardly to the support path steps 6 a repeated upward movement of the feeding arrangement will after a return stroke cause one of the wood pieces to fall down into the pocket formed by the surface portions 7 and 9. The more steps the feeding arrangement and the support path comprise the more reliable the function.
The device may of course be modified in several ways within the scope of the invention.
Claims (9)
1. A device for piecemeal transversal feed of longish objects, preferably wood pieces, from a receving place to a delivery place, comprising a feeding arrangement, which is movable from the receiving place so as to feed the objects along a support path having a step-like constitution with at least one step, a driving arrange-ment being arranged to set the feeding arrangement in a motion to and fro, the length of which is less than the length of the support path, said feeding arrangement ha-ving also a step-like constitution with at least two steps, the feeding arrangement being co-ordinated with the support path so as to achieve that the hinder step of the feeding arrangement seen in the feed direction and the support path portion located ahead of said step of the support path upon movement of the feeding arrange-ment form a first-seat for receiving an object, which is displacable along said support path portion by the movement of the feeding arrangement at the same time as the second step of the feeding arrangement and the support path portion located behind the support path step form a second seat for receiving an object, which seat also is displacable along the latter support path portion by the movement of the feeding arrangement, said device being so constructed that when an object located in the first seat is reaching the support path step it will move to abutment against the portion of the feeding arrange-ment located between its two steps upon influence of the gravitation and be held in a third seat during the back-ward movement of the feeding arrangement, the latter seat being formed by a part of the support path step and the portion located between the two steps of the feeding arrangement, and be received in the second seat when the second step of the feeding arrangement has moved back and is moving forwardly again, the improvement comprising that the movement path of the feeding arrangement is subs-tantially rectilinear and parallel to the support path portions located behind and ahead of the support path step respectively, that the support path comprises an inclined rising in the direction from the receiving place to the delivery place, and that the parts of the feeding arrange-ment and the support path steps participating in the forming of the three seats are projecting approximately equally, viewed perpendicularly to the longitudinal di-rection of the support path, beyond the respective parts of the support path and the feeding arrangement respec-tively also participating in the forming of the seats.
2. A device according to claim 1, wherein the support path is constituted by at least two support parts, which are mutually spaced in the transversal direction of the support path and the feeding arrangement comprises feeding means arranged between these two support parts, the step-forming parts of said means extending substantially con-tinuously between the two support parts.
3. A device according to claim 1, wherein the steps of the feeding arrangement and of the support path together with the portion located immediately above the feeding arrangement and the support path respectively are for-ming a configuration opening up upwardly.
4. A device according to claim 1, wherein the support path as well as the feeding arrangement has at least one additional step, which is located above the steps already mentioned.
5. A device according to claim 1, wherein a sensing arrange-ment is arranged to sense whether or not an object already is at the delivery place, the sensing arrangement being adapted to, upon occurence of an object at the delivery place, stop the feeding arrangement in an intermediate position, in which an object is supported by the upper-most step of the feeding arrangement comparatively close to the highest point of the support path.
6. A device according to claim 1, wherein the feeding arrangement is adjustable with respect to the support path in a substantially vertical plane and in a direction substantially perpendicular to the direction of motion of the feeding arrangement.
7. A device according to claim 6, wherein the feeding arrangement is supported by one or more supporting mem-bers, which are adjustable with respect to the frame of the device.
8. A device according to claim 7, wherein said supporting members are forming a support path/paths for rolling or sliding means arranged on the feeding arrangement.
9. A device according to claim 2, wherein the feeding means is provided with an opening in the region of the transition between its steps and the portions located there above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000526880A CA1277682C (en) | 1987-01-07 | 1987-01-07 | Device for piecemeal transversal feed of longish objects, preferablywood pieces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000526880A CA1277682C (en) | 1987-01-07 | 1987-01-07 | Device for piecemeal transversal feed of longish objects, preferablywood pieces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1277682C true CA1277682C (en) | 1990-12-11 |
Family
ID=4134701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000526880A Expired - Lifetime CA1277682C (en) | 1987-01-07 | 1987-01-07 | Device for piecemeal transversal feed of longish objects, preferablywood pieces |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1277682C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2259492A (en) * | 1991-09-11 | 1993-03-17 | Linden Fab & Eng | Positioning elongate objects. |
| FR2816295A1 (en) | 2000-11-09 | 2002-05-10 | Linden Fabricating & Engineeri | Spiral separator for saw logs has multiple rotary cylinders with helical flutes to feed logs between offset inlet and outlet |
| US6450324B1 (en) | 2000-02-25 | 2002-09-17 | Linden Fabricating & Engineering Ltd. | Double acting log singulator |
| US6761261B2 (en) | 1999-04-27 | 2004-07-13 | Maxi-Tour Inc. | Article transfer device |
| EP1980506A2 (en) | 2007-04-12 | 2008-10-15 | Holtec GmbH & Co.KG | Log step feeder |
-
1987
- 1987-01-07 CA CA000526880A patent/CA1277682C/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2259492A (en) * | 1991-09-11 | 1993-03-17 | Linden Fab & Eng | Positioning elongate objects. |
| DE4230439A1 (en) * | 1991-09-11 | 1993-03-25 | Linden Fab & Eng | DEVICE AND METHOD FOR ALIGNING THE END OF OBJECTS |
| AT402706B (en) * | 1991-09-11 | 1997-08-25 | Linden Fab & Eng | ADJUSTING MACHINE AND METHOD |
| US6761261B2 (en) | 1999-04-27 | 2004-07-13 | Maxi-Tour Inc. | Article transfer device |
| US6450324B1 (en) | 2000-02-25 | 2002-09-17 | Linden Fabricating & Engineering Ltd. | Double acting log singulator |
| FR2816295A1 (en) | 2000-11-09 | 2002-05-10 | Linden Fabricating & Engineeri | Spiral separator for saw logs has multiple rotary cylinders with helical flutes to feed logs between offset inlet and outlet |
| US6419080B1 (en) | 2000-11-09 | 2002-07-16 | Linden Fabricating & Engineering (Prince George) Ltd. | Spiral singulator |
| BE1014916A3 (en) | 2000-11-09 | 2004-06-01 | Linden Fabricating & Engineeri | Spiral separator. |
| EP1980506A2 (en) | 2007-04-12 | 2008-10-15 | Holtec GmbH & Co.KG | Log step feeder |
| DE102007017626A1 (en) | 2007-04-12 | 2008-10-16 | Holtec Gmbh & Co. Kg Anlagenbau Zur Holzbearbeitung | Roundwood step feeder |
| DE102007017626B4 (en) * | 2007-04-12 | 2009-03-12 | Holtec Gmbh & Co. Kg Anlagenbau Zur Holzbearbeitung | Roundwood step feeder |
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