• 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 system controls operation of the feed grips on a sheet processing machine, having a cam segment acting via a linkage on the grips and a locking mechanism halting grip movement if a sheet is wrongly aligned. The cam segment (13) also acts as the locking device for the grips (3), and has a control spring (11) preloaded into the locking position. It has a protrusion (14) closing the grips against the action of their control spring, with lower portions (15) on either side of the protrusion. The roller (7) of the cam drive mechanism (6-10) can be arranged to rest on the cam protrusion (6) when the segment is locked.
    公开号:SU880794A1
    申请号:SU762376412
    申请日:1976-07-01
    公开日:1981-11-15
    发明作者:Вайсбах Гюнтер；Кюн Фритц；Кнорр Сюзанне
    申请人:Феб Полиграф Лейпциг Комбинат Фюр Полиграфише Машинен Унд Аусрюстунген(Инопредприятие)；
    IPC主号:
    专利说明:

    (54) DEVICE FOR SUBMISSION OF SHEETS
    one
    The invention relates to the printing industry, in particular to sheet processing machines and their nodes.
    A printing machine accelerating device is known, comprising a gripper bar, a cam segment for controlling the grippers, and a cyclic drive for swinging the cam segment 1.
    The disadvantage of this device is that for locking the gripping system the locking spring of the gripper must have a large spring of the neck to overcome the spring forces of the individual gripping springs acting in the opening direction. Due to the large geometrical dimensions of the springs, high inertial and springing forces arise, thus the device is difficult to control from a technical and functional point of view, especially at high speeds.
    The aim of the invention is to increase the reliability of the operation of the sheet accelerator.
    The goal is achieved by the fact that it has an electromagnet with a locking element, and the cam segment has a stop to interact with the locking element of the electromagnet, while the working surface of the cam segment has a constant radius section to close the grippers, bounded on both sides by variable-radius sections to open the grips.
    FIG. 1 shows a kinematic diagram of a sheet feeding device, preferably to a printing press; in fig. 2 - the same, construction; in fig. 3 is a movement diagram of the basic elements of the device.
    10 The device contains an invoice table 1, for example, a printing press, a rod 2 on which a stand 3 and a movable gripper 4 with a roller 5, a leaf-transmitting cylinder 6 with a gripping system 7, a cam segment 8 rigidly fixed on
    15 two shoulders lever 9, freely mounted on the shaft 10 of the rod 2, a cyclic drive for swinging a segment. 8, consisting of a Kulachna 11, a two-armed lever 12 with a roller 13, interacting with a cam II, a connecting rod 14 and a power spring 15; spring 16
     for power closure of the pair, wave 5n cam segment 8, and electromagnet 17 with a locking element 18 connected to the core of the electromagnet by means of a two-arm lever 19 and a lever 20: Cam-. The new segment 8 has a stop 21 for interacting with the locking element 18, as well as a working radius section 22 of constant radius for closing the gripper 4, bounded on both sides by variable radius sections 23 for the gripping opening. Stand 3 and capture 4 are depicted in the singular, while in fact there are several of them, located across the width of the device. The device works as follows. Aligned and inspected on the overlay table 1 sheets, one by one, mounted on the rod 2 grippers 4 are captured, accelerated to the speed of the machine and transmitted to the gripping system 7 of cylinder 6. Immediately after the transfer of the next sheet to the gripping system 7 of the rod 2 with grippers 4 and the arms 3 of the grips return to the application table 1 for receiving the next sheet (the drive of the rod 2 is not shown). The grip 4 moves relative to the grip rack 3 (opening and closing the grip) from the cam segment 8, which, in accordance with the cam profile 11, also performs a periodic swing motion relative to the shaft 10. Due to the different swing motion of the cam segment 8 and the boom 2 with the gripper 4 a relative displacement occurs between them, whereby the roller 5 can move along the surface of the cam segment 8, while in accordance with the surface profile of the cam segment the rotation of the stem Step 2 is carried out in such a way that the grip 4 is closed when the roller 5 rolls over section 22 of segment 8. With the grip 4 closed, it is active in on. the opening direction of the spring 16 is compressed. so that when roller 5 interacts with segment 23 of segment 8, gripper 4 opens. When any violations occur in the mode of operation, the device operates as follows. If the locking devices (not shown) located on the overlaying table 1 receive a signal about the presence of a defective sheet, then the electromagnet 17 is de-energized and under the action of the spring 24 the electromagnet bore, moving, acting through the lever 20 on the lever 19, turning it clockwise As a result, the locking element 19 is mounted on the movement of the stop 2 of the cam segment and, when the locking element 18 interacts with the stop 21, the cyclic drive of the cam segment 8 is blocked. At this time the roller 13 is cyclical rivoda disposed in the area of largest radius of the cam 11 and the cam segment 8 is spaced from the applicator section 1 so that the roller 14 at the time of sheet removal from applicator section does not interact with portion 22 of segment 8, as a result of which it does not grip the closure 4 and the capture of the sheet. After elimination of Violations in operation, the electromagnet is energized and the locking element 18 is retracted from the stop 21, and the rod 2 with grab 4 can again feed the sheets to the machine. FIG. 3 shows cyclograms of the movement of the rod 2 with the gripper 4 and the cam segment 8 and the resulting dependencies for the movement of opening and closing the gripper 4, as well as the action of the cam control segment spring 15 and the gripper control spring 16 during the current phase of motion (Fig. 3) the degrees plotted on the abscissa refer to the rotation-distribution cam. It. corresponds to the working stroke of the boom 2 with the grip 4. Curve a depicts the working stroke of the boom 2, starting and ending at the overlay table 1. The movement of the cam segment 8 is shown by curve b. On a portion of the curve equal to O, the cam segment 8 is in a state of rest. This is the case when the cam segment 8 is located at the overhead table 1 (the curve passes along the abscissa) or in a deflected position from the overlay table 1. The opening and locking movement of the grip 4 is shown by a curve with (normal working conditions), and curve d is an accident in operation . In this case, the grip 4, in the presence of a horizontal trajectory of the curve, does not move, i.e. gripping system 3 and 4 is closed (trajectory; curve on the abscissa) or open. Curve e illustrates the operation of the cam control spring 15. When the cam segment 8 is positioned at the inclined table 1, the cam control spring 15 is decompressed. If the cam segment 8 is retracted from the table, then the cam control segment spring 15 is compressed (the trajectory of the curve passes along the abscissa). The curves f, g illustrate the action of the gripping control spring 16 under normal, working conditions (curve f) and in case of accidents in operation (curve g). The operation of the gripping control spring depends on the opening and closing movement of the gripper 4, i.e. the gripping control spring 16 is open with the gripping system 3 and 4 open, and collapsed with the gripping system 3 and 4 closed. The gripping control spring 16 must overcome only small inertial forces of the boom 2 system, gripper 4 and axis 25. Due to the presence of such small inertial forces, the geometrical dimensions of this spring may be small. Due to the small force of the spring 16 of the gripper control, which is transmitted through the roller 5 to the cam
    segment 8, there is no danger of the cam segment 8 rolling by the force of the gripper control spring, which primarily occurs when the roller 5 moves from the part of the surface of the segment intended to lower section 23 to the part of the surface intended to lift section 22, t. e. in the phase of closing and clamping the gripper 4. Thus, the cam segment control spring 15, the force of which in the closed state is perceived by the bearings of the shaft 26 on which the double-arm lever 19 is attached, can be made with small geometrical dimensions. Therefore, the electromagnet 17 as a reference force should have only the effort to overcome the spring 24 in the locking device.
    Small spring, locking and inertial forces of the locking device also have a favorable effect on the temporal characteristic, i.e. the device in the shortest possible time responds to errors in the work and can easily
    controlled by simple means at low cost.
    权利要求:
    Claims (1)
    [1]
    Invention Formula
    A device for feeding sheets, preferably to a printing press, comprising a gripper bar, a cam segment for controlling grips, and a cyclic drive for swinging the cam segment, characterized in that, in order to increase the reliability of the device, it has an electromagnet with a locking element the segment has a stop for interacting with the locking element of the electromagnet, while the working surface of the cam segment has a section of constant radius for closing the grippers, bounded on both sides variable radius areas for opening grippers. ,
    Sources of information taken into account during the examination 1. Patent of the GDR No. 45086, cl. 15 e 9/13 (prototype).
    enispannt
    E60
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    类似技术:
    公开号 | 公开日 | 专利标题
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    同族专利:
    公开号 | 公开日
    DE2618249A1|1977-01-27|
    CS186451B1|1978-12-29|
    DE2618249C2|1983-12-22|
    DD122239A1|1976-09-20|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DD45086A|
    DE2347568A1|1973-09-21|1975-04-03|Maschf Augsburg Nuernberg Ag|VIBRATING GRIPPER DRIVE FOR SHEET ROTATION PRINTING MACHINES|DD142869A1|1979-04-02|1980-07-16|Guenter Weisbach|SWINGING, BOTTOM PRE-GRIPPERS WORKING|
    DD142694A1|1979-04-02|1980-07-09|Guenter Weisbach|ARC PRINTING MACHINE WITH A BOTTOM PRE-GRIPPER|
    DE3121129C2|1981-05-27|1985-02-07|M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach|Process for feeding in imprinted, scaled sheets|
    DE3922186C2|1989-07-06|1994-08-11|Heidelberger Druckmasch Ag|Cam swinging drive|
    US5456128A|1989-07-06|1995-10-10|Heidelberger Druckmaschinen Ag|Cam oscillating drive in a printing machine with kinetic/potential energy storage means for damping undesired oscillations|
    DE19744507C2†|1997-10-09|2001-03-29|Roland Man Druckmasch|Control device for a sheet transport system in a sheet-fed rotary printing press|
    JP4440401B2|1999-12-27|2010-03-24|株式会社小森コーポレーション|Sheet-like material supply device in sheet-fed rotary printing press|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DD18698375A|DD122239A1|1975-07-01|1975-07-01|
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