• 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:
    The tree trunk to be cut is measured, the results are fed into a computer, and the tree is axially moved by a conveyor into a cutting appliance, when it is retained for the period of time necessary for cutting. A second computer is programmed on the base of the data coming from the first computer, to select an acceleration/deceleration suitable for the drive unit (11) of the conveyor (5-7). The conveyor speed is accelerated during a first period of time (to-tl) and deceerated during a second period (t3-t6) until the conveyor is stopped. The cutting process is initiated before the conveyor is stopped and the acceleration phase of the conveyor is begun before the cutter (2) returns to the at-rest position.
    公开号:SU1025324A3
    申请号:SU802892700
    申请日:1980-03-13
    公开日:1983-06-23
    发明作者:Хейнонен Исмо；Коскенохи Киммо；Наулапяя Эркки；Халко Пекка
    申请人:А-Электрониикка Ой (Фирма)；
    IPC主号:
    专利说明:

    figure 1
    The invention relates to forestry and woodworking industry and can be used on automatic cutting lines.
    There is a known method of chewing whips for assortments on longitudinal feed cuts, including acceleration of the whip, driving at a steady speed, speed reduction and braking, not income of certain distances to the stop position, stopping the whip, pulling in and retraction of the cutting tool and subsequent movement whip 1,
    The disadvantage of this method is that the stopping distance is determined by the installation of the position sensor and is constant in each mode. During the cycle, regardless of dimensional and quantitative parameters: fly head, and this stopping distance must be chosen for the heaviest whip and the smallest stopping torque, i.e. should choose as large as possible. This, in turn, leads to a loss in productivity when cutting logs with a smaller mass, i.e. there is no more
    working cycles.
    There is also known a method of cutting the logs onto springs, including measuring the size and quality parameters of the whip, compiling an optimal program for cutting the whip on the computer, accelerating the whip, moving at the speed that has become, calculating on the computer and then working out the optimal mode of braking the whip, stopping the whip, moving and removing the cutting body to the initial position and the subsequent movement of the whip JJZ.
    The disadvantage of this method is not high enough performance due to the fact that the thrust of the cutting body begins only after a full stop of the whip, and the movement of the whip after the previous cutting cycle begins when the cutting body stops.
    8 of its original position.
    The purpose of the invention is to increase productivity.
    The goal is achieved by the fact that, on the basis of the computer data, the second VM is programmed, which is calculated taking into account the parameters of the whip and the speed of the thrust and cutting body the optimal accelerations during acceleration and deceleration.
    the cutting organ is thrust up to stop the whip; the whip acceleration for its subsequent movement begins when the cutting organ is retracted to its initial position at the moment of its exit from the sawn.
    FIG. 1 shows a scheme for opening yavatski with a cross feed; in fig. 2 - open chewing device
    0 with longitudinal feed, with stops to stop the whip; in fig. 3 - the same, but with a whip displacement sensor and without stops; on . k - opener chewing installation for
    5 of the proposed method, a general view; in fig. 5 - cutting body of the chewing installation; in fig. 6 is a diagram explaining the sequence of operations in carrying out the proposed method.
    Cutting installations for transverse, cutting of the whip 1 in all cases contain cutting body 2. Cutting installations with longitudinal 5. The feed can have power stops 3 (Fig. 2) or the movement sensor of the feeder and, accordingly, the whip 1. The movement sensor can be performed, for example, in
    0 kind of transducer Move number of pulses, or Move code. The feed mechanism 9 may be made in the form of a conveyor having a traction device (chain, belt) 5t mounted on sprockets (pulleys)
    5 6, which are mounted on the frame 7.
    Splitting installations also contain a receiving conveyor consisting of a traction body 8 and its sprockets (pulleys) installed on frame 10. The feeding mechanism (conveyor) has an actuator P, which may, for example, be electric or hydraulic stepper. motor or servomotor.
    five
    The cutting body can be made in the form mounted on the frame 12 and driven by the hydraulic cylinder 13 by means of a circular saw holder T 15. The diagrams (Fig. 6) show the change in velocity V ". whip 1 (conveyor) and speed V of the saw 15 during the cycle time.
    The method is carried out as follows.
    five
    In contrast to the widely used existing methods of cutting logs into assortments, for example, with cross-feeding of logs (Fig. 1)
    or with a longitudinal feed in installations with power stops 3 (FIG. 2), the proposed method for its implementation requires neither a large number of saws nor the presence of metal-consuming and energy-intensive power stops needed for exact stopping of the moving whip. The proposed method can be carried out on flawless cutting machines with a longitudinal feed, in which an exact stop of the whip is provided by stopping the feeder, for example the conveyor belt 5. The operator (or computer), assessing the dimensional and quality parameters of the whip, places an order for sequential cutting of several specific assortments. 8 moment of time tg drive 11 is turned on and acceleration of the feeder begins — along with whip 1; the allowable acceleration for the whip on the feed mechanism (AIG .. 3 and i) is determined by the minimum possible coefficient of friction between the whip 1 and the belt (chain) 5.
    At time t, the feeder with the whip lying on it reaches the steady-state (nominal) speed and then continues to move at this speed. If the length of the ordered assortment is exactly small, the feeder with a whip does not have time to reach the established speed. In this case, the braking command must be given by the control system (computer) at time t. When moving at a steady-state speed upon reaching the calculated computer position, at the time tv the braking command is given, and at the time tg the falling mechanism with a whip stops. Before tj, the computer determines the outcome from the results of the measurement of the whip and the cutting program, the point in time at which it is necessary to issue a command to advance the cutting body 2.
    In the moment . the movement of the chewing device is started. With
    By this, the movement of the cutting organ can be carried out according to several laws. Thus, curve A characterizes the law, in which the speed increases evenly until the saw is cut into the wood; curve B is the law according to which the cutting body first accelerates with the maximum possible acceleration, and then, while it has not yet reached
    the wood surface, a command is given to slow down the speed (at time t), at the time of the incision the speed of movement of the feeder was zero. The allowable acceleration during deceleration of the feeder, as well as during acceleration, is determined by the minimum possible coefficient of friction between the whip and the feeder.
    When the saw blade enters the trunk, the thrust speed decreases, then after cutting the trunk at time t becomes equal to zero, after which the command on the reverb of the saw with the maximum speed is given. At time tg, the disk 15 comes out of the blade in full and at the same time The computer gives the command to start the feeder to measure the length of the next assortment; at time t (j, the speed of removal of the cutting organ begins to slow down; at the moment the cutting organ returns to its original position and the command to stop it is given. When sawing, the whip 1 can also be additionally fixed by some kind of mechanism, for example, the dead-end levers that move together with cutting body in such a way that at the time of cutting the saw into the whip the last was fixed.
    The proposed method makes it possible to increase the productivity of cutting plants with a longitudinal feed, by partially combining in time the two main cycles of the cutting process - the feed cycle and the sawing cycle.

    Fiz.
    6 . /.
    eight
    / J
    at ifi - “at
    W
    %

    and t, f tyte
    FIG. 6
    权利要求:
    Claims (1)
    [1]
    METHOD FOR SPLASHING WHIPS TO SORTMENT IN PLANTS WITH LONGITUDINAL FEED, including measuring the size and quality parameters of a whip, compiling an optimal program for cutting a whip on a computer, accelerating a whip, moving at a steady speed, calculating the computer's optimal operating speed and subsequent shutdown speed the whip, the thrust and retraction of the cutting body to its original position and the subsequent movement of the whip, characterized in that, in order to increase productivity, based on computer data, the programmer the second computer, on which optimal accelerations during acceleration and deceleration are calculated taking into account the parameters of the whip and the speed of the cutting organ’s advance; drank it up.
    . 1
    类似技术:
    公开号 | 公开日 | 专利标题
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    SU409848A1|1974-01-05|
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    SU1713800A1|1992-02-23|Method for working tree trunks
    SU791523A1|1980-12-30|Device for measuring-out lengths of cut timber in log-cutting units with longitudinal feed
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    SU435932A1|1974-07-15|DEVICE FOR CROSSING OF CUTTING OF FOREST LABOR
    SU808267A1|1981-02-28|Device for feeding logs wood-working machines
    同族专利:
    公开号 | 公开日
    DE3009663A1|1980-09-25|
    SE8001953L|1980-09-17|
    FI790907A|1980-09-17|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    RU2450917C2|2010-03-03|2012-05-20|Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Сибирский государственный технологический университет" |Method of crosscutting longwood|
    RU2514756C1|2012-09-11|2014-05-10|Общество с ограниченной ответственностью "БЛИЗНЕЦЫ"|Plant for crosswise cutting of trunk to billets with trunk drive with measuring and locking devices and with sawing mechanism|
    RU2572200C2|2014-01-31|2015-12-27|Общество с ограниченной ответственностью "Парижская коммуна Лтд"|Transverse cutting of stem to billets and unit to this end including stem locking by lock-and-transfer mechanism|
    SE443944C|1982-07-16|1993-07-22|Rema Control Ab|PROCEDURES FOR CUTTING AND DEVICE FOR IMPLEMENTATION OF THE PROCEDURE|
    AT397484B|1987-04-06|1994-04-25|Schilcher Josef Masch|Apparatus for cutting timber to length|
    US5461956A|1993-01-27|1995-10-31|Oliver Products Company|Variable thickness bread slicer|
    DE9401780U1|1994-02-03|1994-03-31|Holtec Gmbh & Co Anlagenbau Zu|Cross-cut saw for logs|
    FI20021207A0|2002-04-29|2002-06-20|Jomeks Oy|Processing device and method for controlling processing device|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FI790907A|FI790907A|1979-03-16|1979-03-16|ADJUSTMENT OF ORGANIZATION FOR THE PURPOSE OF ENTRY|
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