• 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:
    A rotary multi-color printing machine comprises a frame and a plurality of printing units each of which prints in a different color on sheet material passing through the machine. The printing units are mounted one above another in the frame so that the sheet material can pass successively through the printing units. Each printing unit comprises a counter-pressure roll, a blanket roll, a plate roll and an inking roll, the axes of the rolls being parallel. The plate roll and the blanket roll of each printing unit are rotatably mounted in a support. The counter pressure roll of each printing unit is rotatably mounted in the frame on one side of the support, and the inking roll of each printing unit is rotatably mounted in the frame on the other side of the support. The support is slidable relative to the frame in a direction which is horizontal and axial relative to the rolls. In this way, the sub-assembly of the support and all the blanket roll and all the plate rolls can be removed from the machine to change the plates.
    公开号:SU831062A3
    申请号:SU772478854
    申请日:1977-05-06
    公开日:1981-05-15
    发明作者:Корс Гастон
    申请人:Машин Шамбон (Фирма)；
    IPC主号:
    专利说明:

    printing apparatus, and a device for fixing the position of the driving gear wheels, with the axes of the cylinders of each printing unit and the axis of the knurling roller of each inking unit located on the same horizontal line, the bearings of the printing and offset cylinders of each printing unit are placed with the possibility of moving separate frame, between the rolling pin rolls, the forma, offset and printing cylinders, springs, compression and stops for adjusting the clamping force of the cylinder moat to each other, and paints for register control device consists of a shaft mounted on the plate cylinder of each hand crank disc and the flywheel with a recess which interacts with a spring-loaded latch, a separate frame.  In addition, the device for fixing the position of the drive gears includes a lock mounted on the frame and a disk mounted on the shaft of one of the paper cylinders with a recess cooperating with the lock.  FIG.  1 is a multicolor roll offset printing front view; in fig.  2 is a vertical section A-A in FIG.  one; in fig.  3 is a partial horizontal section bb of FIG.  1, at the level of the printing apparatus; in fig.  4 shows a partial vertical and longitudinal section B-B in FIG. 2, on an enlarged scale; FIG. 5 shows the installation device of the for-milling cylinder; a partial front view in FIG.  b - an embodiment of the printing apparatus, a partial vertical and longitudinal section; Fig. 7 shows diagrams of the pneumatic control system of the machine.  The roll printing machine contains a frame with two vertical side walls 1 and 2, a back and a front, respectively) roll stand 3, several printing machines 4-7 spaced between the walls for printing in several colors on the paper web 8.  The back wall 1 and the front wall 2 have corresponding common straps, and screw stops 9 are installed in their lower part, which allow them to be aligned with the floor.  Since all printing machines 4-7 have the same device, only one of them is described in detail in the following, namely, printing machine 7.  It has a plate or cylinder 10, a blanket cylinder 11 and a printing cylinder 12.  In addition, the machine contains colorful devices with roll-on rollers 13, wetting devices with cylinders 14 and 15, paper-making: a system with paperwork cylinders 16 and 17, a receiving device with a cutting rotary device 18 and a sheet-receiving device 19.  The axes of the three cylinders, the printing 12, the offset 11, the plate 10 "and the axis of the knurling roller 13 are located on the same horizontal line and in the printing position are in contact with each other (Fig. one).  The printing cylinder 12 and the knurling roller 13 are mounted on the walls 1 and the offset 11 and the form 10 are mounted rotating on a separate frame 20 formed by the walls 21 and 22 connected to the walls of the frame, connected by straps 23 and 24.  In the printing position, the frame 20 is located inside the bed of the printing press, the back wall 21 is adjacent to the back wall 1 of the bed, and the front wall 22 is located in a vertical rectangular window 25 formed in the front wall 2 of the bed to output the frame 2Q.  FIG.  2, frame 20 is depicted in two positions: in the printing position and in the withdrawal position from the printing press.  The bottom straps 24 of the frame 20 are provided with side rollers 26 with a horizontal axis that move along two horizontal guides 27 mounted on the machine frame across its walls 1 and 2 and extend beyond its limits to the output position paMiJ 20, guides 27 leaning the floor through two vertical columns 28 and two screw stops 29; In addition, the frame 20 has rollers 31 with a vertical axis, mounted below the lower crossbars 24 and moving respectively between each guide 27 and horizontally and transversely of the rail 32.  At the top of the frame 20 has a central / strut 33, on which are mounted rollers 34 with a vertical axis, moving between two parallel horizontal and transverse rails 35, fixed on the walls 1 and 2 of the frame.  Section 33 and both slats 35 extend beyond the machine from the rear wall 1 (see  FIG.  2) so that the frame 20 is in the out position, the water does not extend completely beyond the upper side rails.  All printing machines 4-7 are driven in rotation by an electric motor 36 installed at the rear of the machine and connected via a V-belt transmission 37 with a variable transmission ratio and a box with a bevel gear 38 with a vertically located common drive shaft 39 installed over the entire height of the machine.  In the upper part, the shaft 39 is connected to the flywheel 41 by means of a freewheel 42 for the purpose of manually turning this shaft.  The common drive shaft 39 is connected to all printing apparatus and, in particular, to knurling rollers 13.  To this end, at the appropriate level of each apparatus, it is equipped with worms 43 in engagement with worm wheels 44 connected to shafts 45 (FIG.  3) rolling rollers. 13.  These rollers are mounted with the possibility of rotation on the front 1x and rear bearings 46 fixed in the respective walls of the frame.  The fitting apparatus for each printing apparatus 4-7 consists of ink trough 47, the front and rear cheeks 48 of which rest on the end surfaces of the knurling roller 1 The paint trough 47 is mounted on two horizontal supports 49 fixed to the walls of the 1 and 2 beds inside them.  It has a cylindrical metal rod 50 driven by a DC motor, the speed of which you can adjust.  The rod 50 is pressed under pressure to the rubber roller 13, covered with rubber, it rotates in the same direction as the roller and provides paint.  The screws mounted on the walls 1 and 2 act on the colorful trough 47 and allow adjusting the pressing of the rod 50 against the rolling roller 13 and adjusting the thickness of the paint layer.  The dampening cylinders 14 and 15 of the device are located between two walls 1 and 2 of the bed.  FIG.  3-5 are given the constituent elements of the upper printing apparatus 7.  In each press, the cylinders are rotated from the knurling roller 13.  To this end, on the shaft 45 of the knurling roller 13 is mounted on a key gear with oblique teeth 51, which engages with another gear with oblique teeth 52, mounted on a key on the shaft, 53 of the form cylinder 10 in the rear part of the frame 20.  The shaft 53 of the plate cylinder in the front part of the frame is made with a cylindrical gear 54, which engages with another cylindrical gear 55 mounted on a key on the shaft 56 of the offset cylinder 11 in its front part.  The shafts 53 and 56 of the plate cylinder 10, of the offset cylinder 11 are mounted rotating in the rear part, respectively, on the types 57 and 58 and in the front part on bearings 59 and 61.  These bearings are mounted in horizontal positioned guides 62 and 63 of the walls 21 and 22 of the individual frame 20.  The printing cylinder 12 is rotatably mounted on a stationary shaft 64 fixed at both ends on two vertical flanges 65 and 66 which are mounted so as to move along horizontal guides formed by a pair of rear horizontal runners 67 and front horizontal runners 68.  The flanges 65 and 66 are interconnected by a stitch 69, parallel to the printing cylinder 12 and connected to the rods 71 and 72 of two pneumatic cylinders 73 and 74, mounted on a vertical transverse flange 75 between the walls 1 and. .  The rods 71 and 72 are designed to move the printing cylinder 12 in the direction of the other cylinders of the printing device.  Under normal conditions, the printing cylinder 12 departs from the offset cylinder 11 under the action of springs 76 mounted on the walls 1 and 2 of the bed and resting on the projections 77 and 78, mounted on the respective flanges 65 and 66.  The spring forces of the pneumatic cylinders 73 and 74, which tend to cause the return stroke of the rods, are also connected to this return force of the springs 76.  71 and 72.  The flanges 65 and 66 serve to maintain the pressure between the blanket cylinder 11, the forme cylinder 10 and the rolling roller 13.  For this purpose, the flanges 65 and 66 rest with their vertical surfaces on the shoes 79 on the rear bearing 58 and the front bearing B1 of the offset cylinder 11.  The one-side shoe 79 moves along the bolt 80 screwed and locked in the respective bearings 58 and 61, and its head limits the movement of the shoe 79 to the outside, Mehdu by shoe 79 and the lock nut 81 is fitted with a compression spring 82, consisting for example of a set of discs.  Fingers 83 (FIG.  4) adjustable lengths are mounted on the left front surfaces of the bearings 58 and 61 in order to avoid destruction of the printing cylinder 12 when in contact with the offset cylinder 11, tons. e.  to limit the width of the contact strip of these cylinders.  The second shoe 84 slides along the bolt 85 attached to each right frontal surface of the bearings 58 and 61.  A compression spring, consisting, for example, of a set of disks 86, is also installed between the shoe 84 and the corresponding locknut.  The shoes 84, respectively, are supported on the left frontal surfaces of the rear bearings 57 of the platen cylinder 15.  Similarly, compression springs 87 rest on the right frontal surfaces of the same bearings (Fig.  4), for example, a set of discs mounted on bolts 88 and installed with a stop on the locknut 89 and a stopper 90, which is, for example, a vertical traverse between two horizontal guides 62 on their right side.  In addition, pins 91 are also mounted on the right front surfaces of the underlifts 57 and 59, which serve to adjust the width of the contact strip to also rest on the left front surfaces of the bearings 46.  FIGS. B shows another design of the device for bringing the cylinders of the printing apparatus 12, 11 and 10 into contact with the rollers 13 of the inking apparatus and rolling them out of the contact.  The flanges 65 here are also used to create pressure between the offset cylinder 11, the forme cylinder 10 and the knurling roller 13.  For this purpose, the flanges 65, with their right vertical surfaces, rest on the shoes 79 a, mounted on screws 80 a, mounted on the left vertical surfaces of the bearings 58 of the offset cylinder 11.  It is noticeable that in this design the springs 82 provided in FIG.  4 are missing.  Conversely, there are other compression springs 86 (for example, a set of discs) between the bearings: 58 of the Il offset cylinder and the bearings of the plate cylinder 10.  Similarly, third spring springs 87 are provided between the right surfaces of the bearings 57 and the stop 90.  Thus, in the form of a design of this variant, only springs 86 and 87 are retained, but the set of disks is chosen such that the force of the springs 86 is less than the forces of the springs 87.  Therefore, in the working position of the machine, when under the in;: - 1zh flanges 65 are shifted to the left by means of pneumatic cylinders: 73, springs 87 first of all deflect the front cylinder 10 from the rolling roller and the form cylinder 10 remains in contact with the offset cylinder 11 and pressed to the printing cylinder 12, and the paper web 8 continues its movement between the last cylinders.  Therefore, the ink continues to be fed to the forme cylinder 10, through it to the blanket cylinder 11, and alternately to the paper web 8.  Then, when the printing cylinder 12 is sufficiently removed by the action of the pneumatic cylinder 73, the bearings 58 of the offset cylill ;; p 11 are pushed towards the stops 83 a under the action of weaker springs 86.  To the frame 20 is removed from the machine bed in the transverse direction, the plate cylinder 10 is already partially cleaned, which significantly reduces the time for its final cleaning.  .  . For registration of paints, t. e.  To adjust the installation of various forme cylinders in the correct half of the position after changing the printing plates, the S3 shafts of these cylinders are equipped with movable discs 92 on the outside of the front wall 22, made in a block with control flywheels 93 Movable discs 92 have peripherals of a notch 94 spring-loaded finger with a ball 95 mounted on a pivot arm.  Before the frame 20 comes out to the forward position, or prior to its insertion, it is necessary to install in the correct position the bodies of the cutting unit 18 and gears 51, which are seated on the shafts 45 of the knurling rollers 13 and which drive the rotational plates and offset cylinders 10 and 11, respectively .  To fix the position of the drive gears, there is a disk 96 fixed on the papers of the lower cylinder 16 and a latch 97 placed on the wall 2 of the machine and interacting with a recess 98 on the periphery of the disk 96.  At the same time, the paper cylinder is connected to the common drive shaft 39 by means of a gear unit 99, 100.  A colorful trough 47 having a circular metal rod 50 rotated by an electric motor is pressed under pressure to the knurling roller 13 by means of two pneumatic cylinders 101 installed vertically on each side of the paint apparatus.  Each of the cylinders 101 by the end of the piston rod 102 acts on the end of the lever arm 103, which rotates around the horizontal and transverse axis 104, and each lever 103 has another arm 105 through which it is connected to the colorful channel 47.  Therefore, when each pair of pneumatic cylinders 101 is energized from below, the piston rods 102 exert on the levers 103 forces turning them clockwise around the axis 104, as a result of which the block of paint trough 47 and, in particular, the rod 50 are pressed under pressure to the knurling roller 13.  Fig, 7 shows the principle of operation of the pneumatic system of the proposed roll printing machine.  The pneumatic system has a source of compressed air 106.  Four pairs of pneumatic cylinders 10t controlling the pressure supply — on the colorful troughs 47, corresponding to the four colors, are connected to the compressed air source 106 by means of an electropneumatic valve 107.  The pneumatic cylinders 73 and 74, which create pressure on various printing apparatus, are also connected to a source of compressed air 106 by means of individual constraints. The air flow rates are 30, 40, 60 and 70 and four individual electrical valve 108, These four electropneumatic valves are in turn connected to the output of the electro-pneumatic valve 109, which unlocks the supply of pressure.  Two pneumatic cylinders 111 are also connected to the source 106, which ensure that the paper strip is clamped between the nushield paper with cylinders 16 and 17 attached. by means of a pneumatic distributor,.  The preparation of the machine for printing and its management in the printing process is carried out as follows.  At the end of the previous printing, the various components of the machine are in the printing position shown in FIG.  one.  All knurling rollers 13 rotate from.  common drive shaft 39 and transmit the rotation of the first plate cylinder 10 through the worm gears 51 and 52 ,.  then offset cylinders 11 through gears 54 and- 55.  The printing cylinders 12 are pressed under pressure to the offset cylinders 11 by the action of the pneumatic cylinders 73 and 74.  The force produced by the pneumatic cylinders is applied to. each printing unit through the side flanges 65 and 66 to the moving bearings 57, 58, 59 and 61.  Therefore, the compression springs and the forme cylinders 10 are pressed against the respective knurling rollers 13, causing some squeezing of the surface layer of rubber.  The amount of compression, which corresponds to the so-called contact width, is determined by the length of the finger, forming the stops, inserted between the bearings 57 and 59 of each cylinder 10 and the fixed bearings 16 of the knurling roller 13.  When the machine is stopped after printing the previous print run, the power supply to the pneumatic cylinders 73 and 74 is stopped and, consequently, the pressure exerted on the cylinders of various printing blocks disappears.  As a result, each print cylinder 12 moves to the left under the action of return springs 76 installed in the frame, as well as internal springs of the pneumatic cylinders 73 and 74. Therefore, the various compression springs 82, 86 and 87 are weakened so that each forme cylinder 10 moves to the left of the rolling the roller 13 as a result of loosening the spring 87, and the offset cylinder 11 departs to the left of the plate cylinder 10 as a result of loosening the spring 86.  The displacement to the left of the form cylinder 10 relative to the rolling roller 13 is significantly larger than the gap between the offset cylinder 11 and the forming cylinder 10 to avoid contact between the forming cylinder 10 and the rolling roller 13 during the subsequent exit of the frame 20.  When all the cylinders of the printing presses have been released about the pressure, the frame 20 can be pulled out of the machine, moving it forward along the bottom guide 27 to the full output position shown in Fig. 2.  When moving, the frame 20 rolls along the sides of the rollers 31 and 34.  When the frame 20 leaves the front position, it is possible to very easily and quickly replace the shapes of the various cylinders 10 with the aim of producing the next print run.  Before entering the frame 20, other devices of the machine are installed and secured in the correct position.  For this purpose, the handwheel 41 is rotated manually until the recess 98 of the disk 96 is against the latch 97.  At this moment, all the gears 51 of the knurling rollers 13 are fixed in the required position for the purpose of their further engagement with the gears of the 52-shaped cylinders 10.  When the new molds are put in place, it is enough to install all the forme cylinders 10 in the correct position, t. e.  to the position in which the pins of the installation 95 enter into the recesses 94 in the movable disks 92.  In this case, all the forme cylinders are set correctly relative to each other for different paints.  Then the frame 20 is inserted into the machine until its rear wall-21 is opposite the rear wall of the machine 1.  At this point, pressure is applied to the pneumatic cylinders 73 and, as a result, the printing cylinders 11 are moved to the right.  The side flanges 65 and 66 on their part 1 move the sliding bearings 57, 58, 59 and 61 to the right, compressing the compression springs while the springs 87 between the forme cylinders 10 and the knurling rollers 13 generate a force at their full compression weaker than the force produced other compression springs 82 and 86.  Therefore, when pressure is applied to the pneumatic cylinders 73 and 74 of the spring 87, as weaker, the first are compressed so that the cylindrical cylinder 10 comes into contact with the rolling roller 13 and the oblique gear 52 engages with the second oblique gear 51 rolling roller 13.  The squeezing of the knurling roller 13 is limited by the fingers 91.  Then, other compression springs 82 and 86 are compressed, thereby driving the pressure cylinder 11 and the plate cylinder 10, as well as the printing cylinder 12 and the offset cylinder 11.  When starting up the printing press, the colorful apparatuses were first pressurized.  The pneumatic cylinders 101 are thereby fed through an electropneumatic valve 107.  Then, after adjustable time delay from 0, 1 to 30 s, the main engine is started, pressure is applied to the pneumatic cylinders 110 through the pneumatic distributor 111 and the electro-pneumatic valve 109 is opened to enable the printing pressure supply.  You can manually apply pressure to each press.
    steam feed, pneumatic cylinders 78 and 74 through the appropriate control
    electro-pneumatic valve 108. Manual pressure applied to each printing device is possible when the humidifying device rotates and is itself under pressure.
    Normal stopping of the machine is carried out with the help of a push button on the control panel: pressing the button turns off the pressure simultaneously on all printing machines (turning off the power supply of the pneumatic cylinders 73 and 74) and after an adjustable pin. They stopped the actuators at the same time (turning off the power supply to the pneumatic cylinders 110), stopping the operation of the pressure relief valve (closing the valve 109), stopping the engine and turning off the pressure on the paint units (turning off the power supply to the pneumatic cylinders 101). Flow limiters 30, 40, 60 and 70 are provided for adjusting the time during which contact of the offset cylinder is maintained to remove the maximum amount of ink from the mold.
    The proposed version of the web offset printing machine allows to achieve a reduction in size and time consumption for changing the printing forms. The arrangement of the axes of the cylinders of each printing unit and the axis of the rolling roller of the inking apparatus on one horizontal line and the placement of the bearings of the plate and offset cylinders in the guide walls of a separate frame, installed with the possibility of displacement beyond the walls of the machine, allows the printing cylinders to maximize devices and thereby reduce the size of the machine while improving the conditions and reducing the service time of the offset cylinder and the plate cylinder when changing print forms . This roll printing machine. it allows not to use the electronic register system of various inks, since the printing units are located in close proximity to each other. However, it is absolutely necessary to make a perfect installation of printing plates on the form cylinders 10. To ensure accurate installation, the various originals used to make the forms are perforated strictly on the same template with the notch installation. In the case of printing in four colors, four originals exactly overlap each other and perforate. The copy machine should also
    have the installation notches, and the originals are identically located on the forms relative to the perforated holes. The holes must correspond with the pins on the clamping device. Formation of forms on cylinders and then the registration of paints is limited by mechanical installation of the cylinders. In the description indicated that. The printing plates on the Fama 20 are replaced as soon as the frame leaves the car, after which the frame with new formals is reintroduced into the machine. But in order to gain time, it is possible to prepare in advance a second frame with printed forms for printing a new print run and bring it into the machine after the output of the previous one.
    权利要求:
    Claims (1)
    [1]
    1. Multicolor web offset printing machine containing a bed with side walls, a roll stand, printing machines located at different levels one above the other, each of which consists of a form, offset and printing cylinders, colorful and humidifying machines, paper flow systems paper cylinders, a receiving device, a pneumatic system with a source of compressed air, a device for its distribution and a pneumatic cylinder / sh for clamping the cylinders of the printing apparatus and rolling rollers to each other apparatus and boom-toothed cylinders, a device for registering paints and a gear drive, characterized in that, in order to reduce the size of the machine and the time spent on changing the printing plates, it has horizontal guides mounted on the frame across its walls and extending beyond its limits, mounted with the ability to move in these guides, a separate frame with scaffolding clamps and walls that are parallel to the stanchion 1 of the bed are connected by transverse straps and have internal horizontal guides by numbers in printing apparatus, and. a device for fixing the position of the drive gears, the axes of the cylinders of each printing unit and the axis of the knurling roller of each inking unit are located on the same horizontal line, the bearings of the printing and offset cylinders of each printing unit are placed with the possibility of movement; in the internal horizontal guides of a separate frame , between the rollers of the knurling rollers, the forming, offset and printing cylinders, compression springs and stops are installed to regulate the pressing force of the cylinders against each other y, a register control device for paints, consisting of a shaft mounted on the plate cylinder of each hand and rota provo5 flywheel disc recess, the interaction: vuyuschego separate spring-loaded latch frame.
    2, the machine according to claim 1, characterized in that the device for fixing the position of the drive gears comprises a lock mounted on st, anine, and mounted on the shaft of one of the paper cylinders of the cylinder with a notch interacting with the lock.
    Sources of information taken into account in the examination
    1. Certificate of utility of France. 73.24849, cl. In 41 F 7/04 1976 (prototype).
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    同族专利:
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    US4141293A|1979-02-27|
    ATA303277A|1980-12-15|
    SE8005101L|1980-07-11|
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    DD130122A5|1978-03-08|
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
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    GB8611722D0|1986-05-14|1986-06-25|Drg Uk Ltd|Processing paper & other webs|
    USRE34483E|1986-05-14|1993-12-21|Strachan Henshaw Machinery Limited|Processing paper and other webs|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR7613688A|FR2350198B1|1976-05-07|1976-05-07|
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