• 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:
    1468554 Offset printing press; replacing cylinders CHAMBON Ltd 24 Oct 1974 [24 Oct 1973] 46014/74 Heading B6C An offset printing press comprises an engraved or plate cylinder 2 mounted on the main frame 1, a blanket cylinder 4 and an impression cylinder 8 mounted on a subsidiary frame composed of horizontally-movable side plates 7 and screw assemblies which on rotation of a hand wheel, Fig. 2 (not shown), first release the pressure between cylinders 2 and 4 and then move cylinders 4 and 8 on frame 7 away from cylinder 2 to allow for replacement with differently-sized plate and offset cylinders. The screw assembly includes transverse shaft 19, worm gear 18, 15, compressible washers 17 and screw-threaded rods 13. The washers 17 exert a restoring force during the first revolution of the hand wheel but subsequently, after they have been completely expanded, the hand wheel causes direct movement of the side plates 7. The impression cylinder is pivoted on two-armed lever 10 at point 11, the pressure adjustment being by button 34; on movement of the subsidiary frame, the cylinder 8 is tripped from cylinder 4, but is restored at the same pressure on return of the frame.
    公开号:SU719488A3
    申请号:SU742070479
    申请日:1974-10-23
    公开日:1980-02-29
    发明作者:Корс Луи
    申请人:Сосьете Д"Этюд Де Машин Спесьаль (Фирма)；
    IPC主号:
    专利说明:

    (54) ROTARY OFFSET PRINTING MACHINE
    the stroke between the offset cylinder 4 and the printing cylinder 8.
    In order to change the format and to immobilize the platen cylinder 2 to the blanket cylinder 4, on the base 1 of the machine, on each side of the cylinders there are two threaded rods 13 (in Fig. 1 only one rod is shown) screwed with their ends into the holes 14 made in the holder x 7. Threaded rods 13 are installed with rotation in supports 15 and are associated with means for simultaneously bringing them into rotation, made in the form of two worm gears, each of which consists of a screw 16 and a worm gear 17, a screw worm mounted on a common shaft 18. Cher The impeller 17 is fixed with the help of nuts 19 and cup springs 20 are installed between it and the support 15, pushing out the threaded rods 13, which are secured by the collar 21.
    The shaft 18 is connected to the flywheel 22 by its outer end. The flywheel 22 is connected to the shaft 18 by a key 23 placed in the groove 24 of the flywheel 25, so that the flywheel 22 can slide along the shaft 18. On the shaft 18 is a sleeve 26 with radial shaft 27 , which can come into contact with a sliding stop 28, reinforced on the frame. The flywheel 22 and the pusher 25 are pressed against the sleeve 26 by the compression spring 29.
    The spring 29 on the one hand rests on the hub 25, and on the other hand, on the clamp 30, fixed at the end of the shaft 18 by the nut 31. The hub 25 ends with cams 32 entering into the corresponding sockets 33, made on the opposite end of the sleeve 26.
    To change the format, the flywheel 22 is turned one turn counterclockwise so that the radial pin 27 does not crack from one side of the stop 28 to the other. This rotational movement is carried out when the flywheel 22 is pressed in the direction of the sleeve 26 and the hub 25 of the flywheel 22 is engaged with the sleeve 26.
    Maschinna works as follows.
    The rotation of the flywheel 22 in approximately one revolution is transmitted to the shaft 18 and, through two screw holes 17, 16, to two threaded bars 13. The rotation of each threaded rod 13 causes the corresponding movement of the corresponding holder 7, which tends to move to the right, and the offset cylinder 4 tends to move from the platen cylinder 2. At the start of rotation of the threaded rod 13, the offset cylinder 4 remains in contact with the platen cylinder 2 for the entire period, the disc springs 20 are unfolded. The latter, abutted in the core 15 and the worm wheel 17, are constantly This is applied to the screw thread 13 via a returning force directed to the left, which is transmitted
    through holders 7 offset ZilNndru 4, providing pressure naslednego to the plate cylinder 2.
    After the shaft 18 is rotated one turn, a full decompression occurs, after which the flywheel 22 is disconnected from the sleeve 26, which remains stationary due to the contact of the finger 27 with the abutment 28, pulling the flywheel 22 to the right (Fig. 2). In this moment
    the cams 32 of the hub 25 come out of the corresponding grooves 33 of the hatch 26, after which the flywheel 22 and the shaft 18 can be freely rotated by the number of revolutions sufficient for the required displacement of the holders 7 and
    offset cylinder 4.
    After changing the format, to restore the contact of the offset cylinder 4 with the mold cylinder 2, which has a new format, it is enough to turn the flywheel 22,
    disconnected from sleeve 26, in reverse direction. Once the offset 4 and plate 2 cylinders come into contact, the connection between the flywheel 22 and the sleeve 26 is reestablished, releasing the flywheel, causing the flywheel under the action of the spring 29 to be pressed against the sleeve 26 and the cams 32 of the hub 25 enter the sockets 33 of the sleeve 26. From now on, continue to turn the flywheel 22 in the same direction, so
    as a plate cylinder 2, the offset cylinder 4 is in contact and the holders 7 do not move, gradually squeeze the springs 20 between the worm gear 17 and the support 15, and this rotation is carried out until the pin 27 comes back into contact with the norm 28. Compressed springs 20 apply a 13 left force to each threaded rod, 13 tons, and a force directed to the left, and the resultant pressure is created between the cylinders 2 and 4.
    The device regulating the pressure of the printing cylinder 8 contains a non-cross shaft 34 mounted with rotation in
    two holders of the bracket 1. Through each end of the shaft 34 and there is a diametrical rod 35, the threaded end 36 of which is screwed into a threaded hole made in the transverse strut 37 installed between the lower ends of the second arms of the swing arms 10. Each rod 35 is connected by its external end handle 38 adjust the clamping cylinder 8.
    Between the shaft 34 and the shoulder 39 of the rod 35, the cup springs 40 are clamped, which, resting against the shaft 34, press the rod 35 to the right. The movement of the rod 35 to the right is limited to nuts 41, screwed
    on the rod 35 and wrenching into the shaft 34 from the side of the anti-spring springs 40. The handle 38 allows compressing the spring 40 to a greater or lesser degree and consequently changing the pressure applied
    the printing cylinder 8 to the offset cylinder 4. When the holders 7 move to the right as the format changes, each lever 10 rotates on the axis 11 clockwise, causing the printing cylinder 8 to lower. Contact between the printing cylinder 8 and the offset cylinder 4 is restored when the latter begins to come in contact with the printing cylinder 2 when the holders 7 are moved to the left after changing the format.
    权利要求:
    Claims (1)
    [1]
    1. US patent No. 353006, CL. 101-137, published. 1967 (prototype).
    类似技术:
    公开号 | 公开日 | 专利标题
    US4457231A|1984-07-03|Phase adjusting apparatus of sheet-fed rotary printing press with turn-over mechanism
    US2629324A|1953-02-24|Apparatus for making lithograph blankets
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    SU719488A3|1980-02-29|Rotary offset printing machine
    JPH04226354A|1992-08-17|Throw-on/throw-off device for blanket cylinder in printing unit of sheet-feed offset press
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    US4262590A|1981-04-21|Auxiliary printing unit for a printing press, in particular a rotary printing press
    US3272122A|1966-09-13|Method of adjusting a foreshortened impression roller
    US3041966A|1962-07-03|Multicolor web offset press
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    GB936437A|1963-09-11|Throw-off mechanism for offset presses
    US2619901A|1952-12-02|Impression length varying means for rotary offset printing machines
    US2051858A|1936-08-25|Printing cylinder
    US2798426A|1957-07-09|Material applicator for rotary printing or duplicating machines
    US2857841A|1958-10-28|Printing plate clamping mechanism
    US2832288A|1958-04-29|Printing plate cylinder
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    US3584578A|1971-06-15|Rotary offset press with position control of offset cylinder relative to adjacent press cylinders
    US2748699A|1956-06-05|Block-carrying devices for sheet or web fed rotary printing machines
    同族专利:
    公开号 | 公开日
    DK555074A|1975-06-16|
    AT349497B|1979-04-10|
    SE7412943L|1975-04-25|
    CA1013614A|1977-07-12|
    ATA858474A|1978-09-15|
    DE2449923A1|1975-04-30|
    US3987726A|1976-10-26|
    BE821076A|1975-02-03|
    FR2248939B1|1977-09-09|
    IT1025093B|1978-08-10|
    LU71121A1|1975-05-28|
    JPS5083105A|1975-07-05|
    SE400227B|1978-03-20|
    FR2248939A1|1975-05-23|
    NL7413971A|1975-04-28|
    CH585108A5|1977-02-28|
    JPS5541182B2|1980-10-22|
    GB1468554A|1977-03-30|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US1231932A|1914-05-15|1917-07-03|Corp Of Maschinenfabrik Johannisberg G M B H|Rotary printing or embossing machine.|
    US3041967A|1959-05-14|1962-07-03|Paper Converting Machine Co|Cylinder support and moving means for printing mechanism|
    US3067674A|1961-03-14|1962-12-11|Miehle Goss Dexter Inc|Throw-off mechanism for offset presses|
    US3606835A|1969-07-10|1971-09-21|Etudes De Machines Speciales|Offset rotary printing machine|JPS5590446U|1978-12-20|1980-06-23|
    US4852486A|1988-11-25|1989-08-01|Basf Corporation|Portable flexographic proofer device|
    DE3915481A1|1989-05-11|1990-12-13|Windmoeller & Hoelscher|DEVICE FOR STARTING AND LIFTING OFF A BACK PRESSURE CYLINDER ON A FORM CYLINDER|
    DE4142754C2|1991-12-23|2002-04-25|Koenig & Bauer Ag|Device for adjusting the printing pressure of cylinders in printing machines|
    DE19513537A1|1995-04-10|1996-10-17|Heidelberger Druckmasch Ag|Machine frame|
    US5778780A|1996-06-20|1998-07-14|Stevens International|Printing press with nip adjustment|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR7337904A|FR2248939B1|1973-10-24|1973-10-24|
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