• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    SUMMARY In a feed unit comprising a stand (8) with feed rollers (2,3,4) arranged in a free spirit of a respective bar arm (5,6,7) and driven for rotation, the bar arms in a supported spirit are stored in the stand on shafts (9,10,11) extending parallel and around the shafts pivoting between a starting position and a swung out working layer, and further accustomed to the bar arms are connected via a system of articulated links (13,16,19) and forced through the links to coordinated pivoting about its associated axes, a rudder damping means (20; 20 '; 200) independent of the frame is integrated in the linkage system and independently of the frame effectively RVs to slow down the return of the bar arms from a flared ledge. Fig. 1 for publication
    公开号:SE1450780A1
    申请号:SE1450780
    申请日:2014-06-24
    公开日:2015-12-25
    发明作者:Jonas Ljung
    申请人:Söderhamn Eriksson AB；
    IPC主号:
    专利说明:

    TITLE Feeding mill Mr axial feeding of log TECHNICAL FIELD OF THE INVENTION The present invention relates to a feeding mill set up for feeding log in the longitudinal direction of the log. The invention is more particularly directed to a feeder of the type comprising a stand with a through opening and adjacent feed rollers arranged angularly distributed next to the opening, which feed rollers are individually arranged in a free spirit of a respective carrier arm and driven for rotation, and used in the bar arms in a supported spirit is stored in the frame on parallel shafts and about the shafts pivotable between a starting position and an extended working position, and furthermore the bar arms are connected inboard via a system of articulated links and forced by the links to coordinate pivoting about their associated axes.
    BACKGROUND AND BACKGROUND ART Feeders of this type find use in deburring machines of the rotor type of the type which comprise both a fixed machine frame and a relatively rotatably mounted rotor with a central shaft for passing logs. Typically, one feeder is located on the upstream side of the stand for feeding logs into the machine, while another corresponding feeder is located on the downstream side of the stand for feeding a barked log. Mounted on the rotor are a number of pivoting machining tools which are equipped with replaceable members which can be pressed against the surface of the log Mr peeling of bark.
    Feeder for debarking machines has the task of feeding logs in a fast and powerful way without the logs slipping in contact with the feed rollers. For the spirit, the feed rollers are typically challenged with friction-raising members, for example in the form of protruding tips or the like, in their mantle surface. For the same reason, the feed rollers must be kept distinctly pressed against the logs, but at the same time resiliently follow irregularities in the surface of logs of varying dimensions. 2 It is common for the feed rate through a feeder at debarking machines to be in the order of a few meters per second or more. It is thereby realized that feed rollers and feeders are subjected to high dynamic loads and rapid changeover movements when a log arrives in the feed plant and when the log leaves the feed plant.
    A feeder of this kind is Ed Earl Earl's former Swedish patent with publication number SE 517 517 C2. Distinctive feature of this feeder is a pressing mechanism in the form of a compressible Mg arranged between the frame and a link included in the linkage system. The shaft is arranged to be compressed or expanded depending on the rotation of the feed rollers and has the task of generating a clamping force which ensures the necessary contact of the feed rollers with the mantle surface of the log. A shock absorber with the task of steaming the movement of the feed rollers in connection with the log loading the feed rollers is arranged to act between the frame and a long part of the feeding system.
    In the well-known feeder Overt'Or's considerable dynamic loads in the form of shocks and vibrations to the stand in connection with the log arriving or loading the feeder. These bumps and vibrations place a large load on the shock absorber bracket and the stand.
    BRIEF SUMMARY OF THE INVENTION The present invention aims to obviate the above-mentioned disadvantage of the known feeder.
    In short, the purpose is achieved by a feeder of an initially named type, used in a & An stand free-standing pipe steaming means integrally arranged in the link system and independently of the stand operatively to slow down the rupture of the bar arms from a swollen lid. This substantially eliminates or reduces the risk of wear or fatigue caused by bumps and vibrations that are otherwise transmitted to the stand.
    As previously mentioned, the feed unit comprises a stand with a continuous opening and adjacent feed angles arranged angularly distributed along the opening, which feed rollers are individually arranged in a free spirit of a respective bar arm and driven for rotation, and used in the bar arms in a supported spirit stored in the stand. on parallel running shafts and around the shafts pivotable between a starting position and a swung out working layer, and furthermore the bar arms are connected inboard via a system of articulated shafts and forced through the shafts to coordinate pivoting around their associated shafts. The lance system comprises rod-shaped lugs connected between the bar arms, which in each direction are hingedly connected to a respective WI arm, and a carrier inserted between the lugs and hinged relative thereto. In an embodiment of the invention, the motion damping means is operatively connected between the carrier and one of the said two tubes.
    For this purpose, the line in question has an outwardly directed bracket seen from the feed path serving as a first fastener for the tube steaming means. According to the same embodiment, the carrier can be challenged as an outwardly directed bracket seen from the feed path, acting as a torque arm floating with the bar arm, serving as a second fastener for the motion damping means.
    In the feed mill, a clamping means is further arranged operative to generate a clamping force with which the feed rollers are pressed against the outside of the fed log. This holding means can, for example, be realized in the form of a resilient Mg, such as an air-filled Mg, arranged to act between the link system and the frame.
    In various embodiments of the invention, a retaining member in the form of a mechanical spring, a gas spring or a hydraulic spring is integrated in the tube steaming member.
    BRIEF DESCRIPTION OF THE DRAWINGS Exemplary embodiments of the invention are described below with reference to the accompanying drawings, of which Fig. 1 schematically shows a feeder in the starting view seen from the input side or output side, Fig. 2 in a corresponding view shows a partially modified feeder in working condition, and Figs. 3 shows a part of the hydraulics for an embodiment of the invention. DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS A feed unit 1 for feeding logs in the longitudinal direction of the log typically comprises three feed rollers 2, 3 and 4 which are supported in the free spirit by a respective WI arm 5, 6 and 7 which in a supported spirit is pivotable. stored in a machine rack 8. The bar arms are then mounted on shafts 9, and 11 which extend parallel and substantially in the direction of feed of the log through the feed mill. The shafts 9-11 are angularly evenly distributed around an opening 12 through the frame, and in other words can be said to be placed in the tips of an isosceles triangle. The feed rollers 2-4 are driven in rotation R in order to feed them with their circumferential surfaces in tangential abutment against a log through the opening 12. A tank feed path through the feed unit is defined in this case by the feed rollers and their circumferential surfaces oriented towards the feed path. The letter C in the drawings denotes a center for the feed path.
    The feed rollers can be jointly driven by a single drive means via a chain and gear transmission, but can alternatively be individually driven by separate drive means which are arranged in the respective bar arm or feed roller.
    Bearing arms and associated feed rollers are connected inboard via a system of ladders which are articulated at bar arms 5-7. More specifically, the link system comprises a first link 13 rotatably mounted on pivots 14 and 15 arranged at the bar arms 5 and 6, respectively. A second link 16 is correspondingly rotatably mounted on pivot pins 17 and 18 arranged at the bar arms 6 and 7, respectively. The links 13 and 16 are in substantially rod-shaped and can be bent to allow the feed rollers to be swung outwards in overlapping relation to the tongues 13 and 16 (as illustrated in Fig. 2). A third link 19 is articulated on the pivots 15 and 17 articulated in relation to the links 13 and 16. The third link 19 acts as a carrier for a motion damping means 20 on salt which will be described in more detail below.
    The feeder's bar arms and feed rollers are freely pivotable about the respective shafts 9-11 and can be balanced by the position of the pivot pins 14-15 and 17-18 on the bar arms and relative pivot centers in the shafts 9-11 so that no significant rotational forces normally affect the hopper in its initial position. In order to ensure the necessary engagement of the feed rollers with the outside of the fed log is to the link system, a clamping force is generated which in the embodiment of Fig. 1 is generated by a spring member 21. As shown in Fig. 1, the spring member 21 can be supported in a fixed 22 RV to act between the frame 8 and one in the link system no end 16. The spring member 21 can be constituted by a gas-filled Mg or a so-called air spring.
    So far described, the feeder 1 corresponds mainly to the feeder on the edge of SE 517 517 C2.
    The feeder 1 differs from the known feeder in an essential respect, and more specifically with respect to the arrangement of the steam evaporation means in the feeder.
    The construction of the agitation steaming means 20 may be of the known type which comprises a piston axially movable in a cylinder which divides the cylinder into a first and a second chamber, both filled with hydraulic sink. The chambers communicate internally via a non-return valve which allows essentially unobstructed flow from one chamber to the other, and which, with the aid of a flow-reducing throttle, slows down the return flow RV in a slower piston movement in the return direction. The motion damping means 20 acts on this salt to vaporize the movements of the feed rollers in connection with a log leaving the feed unit, whereby bar arms and feed rollers pivot back to the starting layer before the next log arrives at the feed unit.
    The movement damping means 20 dr in the feed unit 1 arranged integrated in the link system and thus independently of the frame operatively to brake the return of the bar arms 5. to the starting layer according to Fig. 1, from the working layer shown in Fig. 2 swung out from the center path C in radial directions. For this purpose, the motion damping means 20 is at one end of its articulated support supported in a bracket 23 formed on the carrier 19, serving as a first fixed point 24 for the motion damping means. In the opposite spirit, the stirring evaporator 20 is articulated supported in a bracket 25 formed on the second line 16, serving as the second fixed point 26 for the stirring steaming means. Arranged on this salt, the stirring steaming means 20 is activated / compressed only as a result of the oscillating movement of the inlets of the liners. More specifically, the tube evaporator 20 is activated or "charged" by shortening the distance between the fixed points 24 and 26 as a result of inward rotation between the carrier 19 and the tube 16 in opposite directions of rotation around the pivot pin 17, when the carrier arms pivot outwards. Correspondingly, the braking force is absorbed internally in the steering system when extending the distance between the starting points 24 and 26 as a result of inward rotation of the carrier 19 and the link 16 in opposite directions.
    A modified embodiment of the feeder described above is illustrated in Fig. 2. In this embodiment, the fan member 21 has been discontinued and replaced by a spring 27 assembled with the tube evaporator 20 '. In general, the tube evaporator 20' can be likened to a spring leg with a spring and shock absorber. combination. The spring 27 may be constituted by a mechanical spring such as a coil spring, but may alternatively be constituted by an air spring or a spring filled with other compressible gas. In the modified embodiment, the spring means which provides the required holding force against the surface of the log is arranged to act between the tongue 16 and the carrier 19, and in other words, like the motion damping means 20, 20 ', is arranged integrally in the link system.
    An advantageous embodiment of the combined spring and rudder damping means 20, 20 'comprises a double cylinder 200 which is shown schematically with associated hydraulics in Fig. 3. The double cylinder 200 is similarly arranged as rudder damping means 20 and 20' integrated in the feed system and can system. like these be arranged to act between the link 16 and the carrier 19.
    The double cylinder 200 comprises a piston 201 with piston rod 202 which is adjustable to change the total length of the double cylinder and the distance between the lengths 16 and 19 in the exemplary embodiment. For the purpose, the piston 201 is operated by a hydraulic circuit 203 which, via a valve 204, regulates the volume of the two communicating cylinder chambers 205 and 206 which are separated by the piston 201 axially movable in the double cylinder. Thereby the size of the opening between the feed rollers 2-4 can be installed or opening opening that is adapted to the size of the logs in question.
    The double cylinder 200 further comprises a piston 207 with piston rod 208 which has the dual functions of, on the one hand, steaming the input of the feed rollers to the outlet stroke when a log leaves the feeder, and on the other hand exerting a clamping force which increases the feed roller contact pressure with the log. For this purpose, the piston 207 7 is operated by a hydraulic circuit 209 which, via a valve 210, distributes hydraulic fluid between the two communicating cylinder chambers 211 and 212 which are separated by the piston 207 axially movable in the double cylinder. The hydraulic circuit 209 more specifically comprises a single-way valve 213. the valve 210 is freely moved from the chamber 211 to the chamber 212 as the piston 207 moves in the direction from right to left in the drawing figure, as a result of the feed rollers being pivoted outwards by the log inserted between the feed rollers. Mr logen leaves the feed unit and the feed rollers pivot back, the piston 207 moving in the opposite direction, the hydraulic fluid on passing from the chamber 212 to the chamber 211 passes the adjustable choke 214. This slows down the Wet and dampens the movement of the feed rollers.
    An accumulator 215 is connected to the RV to increase the working pressure in the hydraulic circuit 209 and apply a pressure which acts against the larger piston area of the piston 207 which is thereby biased in the direction from left to right in the drawing figure. In this way, the double cylinder 200 exerts a clamping force on the link system and on the feed rollers 2-4. The magnitude of the accumulator pressure can, as an example, be stated to be about 3-3.8 MPa, the higher pressure being applied to the feed side of the feeder. The invention is of course not limited to this printing specification which is merely given by way of example. For the sake of completeness, it should be mentioned that the letter designations P and T refer to connecting lines from the pump and to the tank, respectively. other components required Mr hydraulic medium supply and safety functions have been omitted from the drawing figure because their arrangement is not essential to the invention and therefore does not require any further description.
    In this context, it should be mentioned that the double cylinder 200 on a meritorious salt can be operated RV Opening of the feeder in connection with service. By correspondingly installing the valves 204 and 210, if necessary, both the pistons 201 and 207 can be pushed to their outer end parts in and RV a maximum oscillation out of the feed rollers 2-4, RV to offer on this salt the best possible access for service at the feeder.
    Without departing from the inventive concept, an alternative embodiment of the feed unit may comprise that the agitation steaming means is instead mounted to act between the carrier 19 and the first line 13. In any case, the flow regulating valve may be designed with a reversible function and arranged to compress / cylinder unit to slow down the movement of the linkage system.
    In both embodiments, the purpose is to eliminate or substantially reduce the disadvantage of wear and fatigue caused by bumps or vibrations being transferred to the stand.
    权利要求:
    Claims (8)
    [1]
    Feed unit comprising a stand (8) with a through-opening (12) and feed rollers (2,3,4) arranged angularly distributed next to the opening, which feed rollers are individually arranged in a free spirit of a respective bar arm (5,6,7 ) and driven for rotation (R), and accustomed to the bar arms in a supported spirit are stored in the frame on parallel extending axes (9,10,11) and about the axles pivotable between a starting stroke and a projecting working joint, and further accustomed to the bar arms via a system of articulated links (13,16,19) connected inboard and through the links forced to coordinate oscillation around their associated axes, characterized in that a movement damping means (20; 20 '; 200) projecting from the frame is integrally arranged in the system (13). , 16,19) of ldnkar and independent of the stand effective to slow down the return of the bare arms to the starting team.
    [2]
    Feed unit according to claim 1, accustomed to the system of tubes, comprising links (13, 16) articulated between the bar arms and a carrier (19) inserted between the tubes and coupled relative thereto, characterized in that the tube steaming means (20; 20 '; 200) is operatively connected between the carrier (19) and one of the said links (16).
    [3]
    Feed unit according to claim 2, characterized in that the relevant link (16) has a bracket serving as a fastener (26) for the tube evaporator (20; 20 '; 200).
    [4]
    Feed unit according to claim 2 or 3, characterized in that the carrier (19) is designed as a bracket acting as a torque arm floating with the bar arm (6), serving as the first (24) for the pipe steaming means (20; 20 '; 200). 9
    [5]
    Feeding unit according to any one of the preceding claims, characterized in that the rudder damping means (20 '; 200) has assigned a holding means (27, 16, 19) acting between the links in the link system (13, 16, 19) effective for applying a holding force to the feed rollers (2,3 , 4).
    [6]
    Feed unit according to claim 5, characterized in that the rudder damping means (20 ') has a spring means (27) integrated therein.
    [7]
    Feed unit according to claim 5, characterized in that the tube evaporating means is a hydraulically driven double cylinder (200) comprising a piston (207) which is actuated by a hydraulic holding means in the form of an accumulator (215).
    [8]
    Feed unit according to one of the preceding claims, characterized in that the tube steaming means is a hydraulically driven double cylinder (200) comprising a piston (201) which is adjustable for installing a pre-opening layer between the feed rollers (2,3,4). / T = 1
    类似技术:
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    同族专利:
    公开号 | 公开日
    SE538240C2|2016-04-12|
    EP2960026B1|2020-05-13|
    EP2960026A1|2015-12-30|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US10518436B2|2015-12-18|2019-12-31|Söderhamn Eriksson AB|Feeding device for axial feeding of logs|US2857945A|1956-03-22|1958-10-28|Soderhamns Verkst Er A B|Machine for removing bark from logs|
    US3490665A|1967-03-10|1970-01-20|Brundell Jonsson Och Ab|Method and means for guiding logs onto a processing machine|
    SU735398A1|1978-06-27|1980-05-25|Центральный Научно-Исследовательский И Проектно-Конструкторский Институт Механизации И Энергетики Лесной Промышленности|Feed mechanism of rotary debarking machine|
    US4609020A|1982-09-30|1986-09-02|Hutson James Henry|Log debarker tensioning system|
    US4643236A|1985-12-06|1987-02-17|Outboard Marine Corporation|Feed roll tensioning device|
    JPH01104307U|1987-12-29|1989-07-13|
    SE517517C2|2000-10-25|2002-06-11|Soederhamn Eriksson Ab|Feed mechanism for axial feeding of logs or similar comprises frame and three feeder rollers pivotably movable to and from common center|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1450780A|SE538240C2|2014-06-24|2014-06-24|Feeders for axial feed of logs|SE1450780A| SE538240C2|2014-06-24|2014-06-24|Feeders for axial feed of logs|
    EP15173154.4A| EP2960026B1|2014-06-24|2015-06-22|Feeding device for axialfeed of log|
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