WO2019052228A1 - 胶印机的印刷机构 - Google Patents

胶印机的印刷机构 Download PDF

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Publication number
WO2019052228A1
WO2019052228A1 PCT/CN2018/089126 CN2018089126W WO2019052228A1 WO 2019052228 A1 WO2019052228 A1 WO 2019052228A1 CN 2018089126 W CN2018089126 W CN 2018089126W WO 2019052228 A1 WO2019052228 A1 WO 2019052228A1
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WO
WIPO (PCT)
Prior art keywords
transfer
cylinder
shaft
swing arm
roller
Prior art date
Application number
PCT/CN2018/089126
Other languages
English (en)
French (fr)
Inventor
车文春
於金华
孟祥富
Original Assignee
浙江炜冈机械有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 浙江炜冈机械有限公司 filed Critical 浙江炜冈机械有限公司
Priority to DK18857136.8T priority Critical patent/DK3632684T3/da
Priority to ES18857136T priority patent/ES2905166T3/es
Priority to EP18857136.8A priority patent/EP3632684B1/en
Publication of WO2019052228A1 publication Critical patent/WO2019052228A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/02—Rotary lithographic machines for offset printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/0024—Frames
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/20—Supports for bearings or supports for forme, offset, or impression cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
    • B41F13/26—Arrangement of cylinder bearings
    • B41F13/30—Bearings mounted on sliding supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
    • B41F13/26—Arrangement of cylinder bearings
    • B41F13/32—Bearings mounted on swinging supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
    • B41F13/34—Cylinder lifting or adjusting devices
    • B41F13/36—Cams, eccentrics, wedges, or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
    • B41F13/34—Cylinder lifting or adjusting devices
    • B41F13/38—Cylinder lifting or adjusting devices electrically or magnetically operated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
    • B41F13/34—Cylinder lifting or adjusting devices
    • B41F13/40—Cylinder lifting or adjusting devices fluid-pressure operated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F27/00—Devices for attaching printing elements or formes to supports
    • B41F27/10—Devices for attaching printing elements or formes to supports for attaching non-deformable curved printing formes to forme cylinders
    • B41F27/105—Devices for attaching printing elements or formes to supports for attaching non-deformable curved printing formes to forme cylinders for attaching cylindrical printing formes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/004—Electric or hydraulic features of drives
    • B41F13/0045—Electric driving devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2217/00—Printing machines of special types or for particular purposes
    • B41P2217/10—Printing machines of special types or for particular purposes characterised by their constructional features
    • B41P2217/15—Machines with cylinders only supported on one side, e.g. cantilever construction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2227/00—Mounting or handling printing plates; Forming printing surfaces in situ
    • B41P2227/20—Means enabling or facilitating exchange of tubular printing or impression members, e.g. printing sleeves, blankets
    • B41P2227/21—Means facilitating exchange of sleeves mounted on cylinders without removing the cylinder from the press

Definitions

  • This invention relates to printing apparatus, and in particular to a printing mechanism for an offset printing press.
  • the offset printing machine is a lithographic printing machine.
  • the printed graphic is printed on the printing plate of the printing roller from the printing plate of the printing plate, and then transferred to the paper by the transfer roller.
  • the printing mechanism of the offset printing machine has a plate cylinder, a transfer roller and an impression cylinder, and the three rollers cooperate to complete the paper printing.
  • the web offset press is an offset press for printing roll material.
  • the existing printing method is intermittent offset printing. That is, regardless of the change in the length of the printed pattern, the outer diameter of the plate cylinder and the transfer roller is fixed.
  • the maximum printable circumference of the plate cylinder and the printed pattern length of the printed matter are not equal.
  • a large blank no printed pattern area
  • a notch is respectively designed on the plate cylinder and the transfer roller, and the two notches are synchronously arranged.
  • the printed matter such as paper, film
  • the power-driven retreat eliminates the printing blank on the paper, and the printing is performed in the forward direction to form a batch-and-return intermittent printing method.
  • the obvious printing defects of this printing method are: on the one hand, the printing speed is not improved, and the influence is affected. Printing efficiency; on the other hand, the tension of the printed matter is not stable, and it is easy to produce tensile deformation, which affects printing precision and printing effect.
  • the technical problem solved by the present invention is to provide a plate cylinder and a transfer roller capable of replacing different outer diameters, so that the outer surface of the plate cylinder and the transfer roller has a circumference (ie, a cylinder surface) )
  • the printing mechanism does not need to be retracted during printing, the printed matter is stable, the printing speed and printing efficiency can be improved, and the printing precision and printing effect can be improved.
  • a printing mechanism of an offset printing machine including a plate cylinder, a transfer roller and an impression cylinder, wherein the plate roller is sleeved on the plate shaft, and the transfer roller sleeve is It is arranged on the transfer shaft, the impression cylinder is rotated and arranged on the frame, the plate cylinder is matched with the transfer roller, the plate roller and the transfer roller are kept pressed and rolled, and the plate shaft is rotated and set on the frame.
  • the printing shaft is rotated around its axis, and the position of the axis of the transfer shaft is adjusted on the running track of the transfer shaft.
  • the transfer roller with different outer diameters is selected, the axis of the transfer shaft is adjusted.
  • the position on the running track of the printing shaft is such that the transfer rollers of different specifications and outer diameters are kept in a rolling contact with the impression cylinder.
  • the rack is provided with a curved groove, and the curved groove forms a running track of the transfer shaft, and the transfer shaft of the transfer roller is disposed on the curved groove through the mounting seat, and the transfer shaft of the transfer roller is rotated on the mounting seat, and the mounting seat is Position adjustment setting on the curve groove.
  • the transfer axis running track is a circular arc track, and three transfer rollers of different outer diameters are selected, and the circular arc track corresponds to three axial positions of the transfer shaft, and is located at three axial positions.
  • the transfer rollers are respectively held in a crimped pair with the impression cylinder.
  • the outer diameters of the three different specifications are selected as the maximum outer diameter, the minimum outer diameter, and the intermediate outer diameter.
  • the impression cylinder is adjusted in the radial position on the frame.
  • the transfer shaft is arranged to rotate on the swing arm, the swing arm is swinged on the frame, the swing arm swings to form a circular path of the transfer shaft running track, and the axis line of the transfer shaft is positionally adjusted on the circular track .
  • the swing arm is swinged on the frame by the swing arm shaft, and the swing arm shaft is adjusted in the radial position on the frame.
  • the swing arm is driven by the driving device to reciprocate around the swing arm shaft on the frame
  • the driving device comprises a push rod, a jack rod, a cylinder transmission device and a screw drive device
  • the cylinder transmission device comprises a cylinder
  • the screw rod transmission device comprises There is a screw rod, a silk nut and a slider, and the silk nut is arranged on the slider.
  • the screw rod is driven by the power source to drive the transmission nut to move the slider on the frame, the push rod is hinged on the swing arm, and the top rod is hinged on the slider.
  • Upper, the push rod and the jack are hinged to each other, and the push rod or/and the jack are also connected to the cylinder drive.
  • the cylinder adopts a double stroke cylinder or a double cylinder.
  • the piston rod of the cylinder is hinged with the push rod and the top rod, and the cylinder is swinged on the cylinder block.
  • the frame has a plate roller replacement port, and a first end cover is arranged on the plate roller replacement port, and the first end cover is provided with a bearing and a plate shaft; the frame is provided with a transfer roller replacement port, and the swing arm is located at the rotation
  • the second end cover is disposed on the side of the printing cylinder replacement port, the second end cover is disposed on the end cover mounting opening of the swing arm, and the second end cover is provided with a bearing and a transfer shaft.
  • the invention has the beneficial effects that the printing mechanism of the offset printing machine can replace the plate cylinder and the transfer roller of different outer diameter specifications, realize printing of different printing pattern lengths, and ensure continuous printing between the units of the printing pattern on the web (blank Almost no), the use of the web is improved and the web does not need to be retracted, which effectively improves the printing speed and printing efficiency, and does not affect the paper feed, the paper tension is stable, and the printing accuracy can be improved.
  • the present invention has outstanding substantial features and significant advances over the prior art.
  • Figure 1 is a schematic view of the structure of the present invention.
  • Figure 2 is a cross section taken along line A-A of Figure 1.
  • Figure 3 is a cross section taken along line B-B of Figure 1.
  • the printing mechanism of the offset printing machine of the present embodiment includes a plate cylinder 1, a transfer cylinder 4 and an impression cylinder 2, and paper printing is realized by three cylinders.
  • the plate cylinder 1 is sleeved on the plate shaft 16, and the transfer roller sleeve 4 is disposed on the transfer shaft 21, so that the plate roller and the transfer roller of different outer diameter specifications can be exchanged on the shaft.
  • a positioning pin and a notch are arranged between the shaft and the roller to position each other to ensure that there is no relative sliding between the shaft and the roller. It is also possible to provide an elastic layer in the inner hole of the drum, a gas hole is arranged on the shaft, and the air hole is blown through the air source and the air valve.
  • the impression cylinder 2 is rotatably disposed on the frame, and the impression cylinder configuration motor 19 (such as a servo motor) is driven to rotate, and the plate cylinder 1 is matched with the transfer roller 4, that is, the cylinder surface of the transfer roller 4 corresponds to the matching version.
  • the pattern unit on the drum 1 is N times, and N is a positive integer, preferably one or two times, in order to transfer the pattern.
  • the plate cylinder 1 and the transfer roller 4 have the same or slightly different specifications (generally referred to as the outer diameter), and the cylinder surface of the transfer roller 4 can correspond to a pattern unit on the matching cylinder 1 (double relationship); or transfer
  • the cylinder surface of the drum 4 i.e., the outer surface circumference
  • the doubling relationship is adopted, and the plate cylinder and the transfer roller having the same specifications are selected.
  • the plate cylinder 1 and the transfer roller 4 are kept in a crimping pair, the pattern on the plate cylinder is transferred onto the transfer roller, the plate shaft 16 is rotated on the frame 3, and the plate shaft 16 is configured with a motor 13 (such as a servo motor).
  • the drive rotates and drives the plate cylinder on the plate to rotate.
  • the transfer shaft 21 is rotated about its axis, and the transfer shaft 21 is arranged to drive the motor 20 (such as a servo motor) to rotate, and the transfer roller 4 on the transfer shaft 21 is driven to rotate, and the axis of the transfer shaft 21 is rotated.
  • the position of the line is adjusted on the transfer shaft running track 40.
  • the transfer roller of different specifications and outer diameter When the transfer roller of different specifications and outer diameter is selected, the position of the axial line of the transfer shaft 21 on the running track 40 of the transfer shaft is adjusted to make the outer diameter of different specifications
  • the transfer cylinders 4 are both held in a crimped pair with the impression cylinder 2.
  • the transfer roller is matched with the outer diameter of the plate cylinder, and is kept pressed against the roll, and the transfer roller and the impression cylinder are kept pressed and rolled, so when printing patterns of different lengths, the corresponding plate roller and the rotation can be replaced. Press the roller, adjust the position of the axis of the transfer shaft, and keep the transfer roller and the plate roller pressed to the roll, the transfer roller and the impression cylinder to be pressed and rolled, and the printing patterns on the roll paper are between the units. Continuous, the use of the web is improved and the web does not need to be retracted, which effectively improves the printing speed and efficiency, and the paper tension is stable and the material is stable.
  • the frame 3 is provided with a curved groove.
  • a curved groove is formed on the wall plate of the frame 3, and the curved groove forms a running track of the transfer shaft.
  • the transfer shaft 21 of the transfer roller is disposed on the curved groove through the mounting seat, and the transfer is performed.
  • the transfer shaft of the drum is rotated on the mounting seat, and the position of the mounting seat is adjusted on the curved groove.
  • the position of the shaft of the transfer shaft on the running track of the transfer shaft is adjusted by adjusting the position of the mounting seat on the curved groove.
  • the transfer shaft running track 40 is set as a circular arc track, and any three different size outer diameter transfer rollers are adopted, and the circular arc track correspondingly has three axial positions of the transfer shaft, that is, three axial centers.
  • the position of the line corresponds to the installation position of the transfer rollers of three different outer diameters, and the transfer rollers at the positions of the three axial lines are respectively pressed and pressed against the impression cylinder (ideally, the outer cut is maintained).
  • the position of the three axes is just enough to determine the circular path. On the circular path, it is ensured that the three sizes of the transfer roller can be kept in a rolling contact with the plate cylinder and the impression cylinder.
  • the transfer roller and the impression cylinder and the plate with the outer diameter of other specifications can be made by applying different pressures.
  • the roller remains crimped to the roll.
  • the outer diameters of the three different specifications can be selected as the maximum outer diameter, the minimum outer diameter, and the intermediate outer diameter, such as 245 mm, 145 mm, and 200 mm.
  • the impression cylinder 2 is adjusted in the radial position on the frame 3, i.e., the radial position of the adjustment cylinder 2 on the frame can be changed.
  • the initial position means that the transfer cylinders at the three axial positions respectively maintain the pressure-contact roller at the initial position with the impression cylinder before the position adjustment of the impression cylinder.
  • the adjustment setting can set the central rotating shaft of the impression cylinder 2 on the eccentric bushing 23, and adjust the radial position of the impression cylinder by adjusting the position of the eccentric bushing on the frame.
  • the circular path can be in the form of a circular groove on the frame.
  • the transfer shaft 21 of the transfer roller is disposed on the swing arms 5, 24 (left and right swing arms), and the transfer shaft 21 is wound around its axis.
  • the swing arms 5, 24 are swinged on the frame 3, and the swing arms 5, 24 are swung to form a circular arc track, that is, the transfer shaft running track 40, and the axis of the transfer shaft 21 is rotated in the circle by the swing Position adjustment on the arc track.
  • the circular arc path formed by the swing arm also has three axial positions, which can just determine the circular arc track. At least three transfer rollers can be ensured on the circular path to maintain the pressure contact with the plate cylinder and the impression cylinder. Rolling (ideally to keep the outer cut), at least three sizes can be adjusted. The vicinity of the three gauges can also maintain the crimping roll by pressure adjustment, but the transfer roller on the transfer shaft at other positions on the circular path is difficult to simultaneously press and align with the plate cylinder and the impression cylinder to ensure The roller is pressed between the rollers, and in addition to adjusting the radial position of the impression cylinder on the frame, the circular path can also be adjusted, and the adjustment setting can also change the printing pressure between the rollers.
  • the swing arms 5, 24 are swinged on the frame 3 by the swing arm shaft 22, and the swing arm shaft 22 is adjusted in the radial position on the frame 3, that is, the diameter of the swing arm shaft 22 on the frame can be changed.
  • the initial position means that the transfer rollers located at the three axial center positions are respectively pressed and rolled against the impression cylinder before the position adjustment of the swing arm shaft is performed, and the pair is passed.
  • the radial position of the swing arm axis is adjusted to adjust the position of the circular path.
  • the adjustment setting can set the swing arm shaft on the eccentric bushing, and adjust the radial position of the swing arm shaft by adjusting the position of the eccentric bushing on the frame.
  • the swing arms 5, 24 are driven by the driving device to reciprocate around the swing arm shaft on the frame 3.
  • the driving device can directly swing the swing arm by using the cylinder top push arm or the screw with the motor.
  • the driving device includes a push rod 6, a jack 8 , a cylinder transmission device and a screw drive device.
  • the cylinder transmission device includes a cylinder
  • the screw drive device includes a screw rod 11 .
  • the nut and the slider 9 are arranged on the slider 9.
  • the screw 11 is driven by the power source 12 (such as a servo motor and a torque motor) to drive the slider 9 to lift and lower the frame on the frame, and the guide rail is arranged on the frame.
  • the push rod 6 is hinged on the swing arm 5
  • the ejector rod 8 is hinged on the sliding 9 block
  • the push rod and the ejector rod are hinged to each other
  • the push rod is connected with the cylinder drive or the ejector rod is connected with the cylinder drive or pushed
  • the hinge point between the rod and the ram is connected to the cylinder drive, and the cylinder cooperates to drive the push rod and the ejector action.
  • the power source 12 drives the screw
  • the screw 11 drives the slider to lift and lower the slider 9 on the frame, and the slider will swing the swing arm back and forth through the ejector pin, the push rod and the cylinder.
  • the power source stops driving the screw rod, and the cylinder ventilation source pressurizes against the swing arm, and the pressure change of the cylinder is adjusted, and the transfer roller on the swing arm can be adjusted to be pressed against the impression cylinder and the plate cylinder. pressure.
  • the transfer roller can be prevented from jumping and shaking during printing to avoid the phenomenon of ink stick.
  • the cylinder adopts double stroke cylinder or double cylinder.
  • the piston rod of the cylinder is hinged with the push rod and the ejector rod.
  • the cylinder is oscillated on the cylinder block.
  • the cylinder adopts double stroke cylinder or double cylinder to perform double stroke work. For a small stroke, the swing arm can be swung in a small stroke, and the transfer roller can be separated from the other two rollers for inspection or debugging. Double cylinders 25, 26 are used in the figure.
  • the frame 3 is provided with a plate roller replacement port, and a first end cover 17 is disposed on the plate roller replacement port.
  • the first end cover 17 is provided with a bearing 18 and the plate shaft 16; the frame 3 is provided with a transfer roller replacement.
  • the mouth 15 and the swing arm 5 are located on the side of the transfer cylinder replacement port 15, which is the outer side in this embodiment, and may of course be provided on the inner side.
  • the swing arm 5 is provided with a second end cover 27, and the second end cover is disposed on the end cover mounting opening of the swing arm.
  • the second end cover 27 is provided with a bearing 10 and the transfer shaft 21, and can also be disposed on the wall plate. There is a slot for the transfer shaft on the swing arm to move.
  • the swing arms 5 and 24 are respectively disposed on the left and right sides of the rack wall panel, and the plate roller replacement port and the transfer roller replacement port are all located on the right frame wall panel, and the right side swing arm 5 is provided with an end cover.
  • the mounting port is for mounting the second end cap 27.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Abstract

一种胶印机的印刷机构，包括版滚筒(1)、转印滚筒(4)和压印滚筒(2)，版滚筒(1)套设在版轴(16)上，转印滚筒(4)套设在转印轴(21)上，压印滚筒(2)在机架(3)上进行转动设置，版滚筒(1)与转印滚筒(4)对应匹配，版滚筒(1)与转印滚筒(4)保持压接对滚，版轴(16)在机架(3)上进行转动设置，转印轴(21)绕其轴心线转动设置，转印轴(21)的轴心线的位置在转印轴运行轨迹(40)上进行调节设置，选用不同规格外径的转印滚筒(4)时，调节转印轴(21)轴心线在转印轴运行轨迹(40)上的位置，使不同规格外径的转印滚筒(4)均与压印滚筒(2)保持压接对滚。该胶印机的印刷机构可以更换不同外径规格的版滚筒和转印滚筒，提高印刷速度及效率，提升印刷精度。

Description

胶印机的印刷机构
技术领域
本发明涉及印刷设备，具体涉及胶印机的印刷机构。
背景技术
胶印机是一种平版印刷机，印刷时印刷图文从版滚筒的印版上先印到转印滚筒的橡皮布上，然后再由转印滚筒转印到纸张上。胶印机的印刷机构具有版滚筒、转印滚筒和压印滚筒，三个滚筒配合完成纸张印刷。
卷筒料胶印机是印刷卷筒材料的胶印机，现有的印刷方式是间歇式胶印印刷。即无论印刷品图案长度如何变化，版滚筒与转印滚筒的外径是固定不变的，当印刷品的印刷图案长度变化时，版滚筒的最大可印刷周长与印刷品的印刷图案长度出现不相等，在印刷图案长度小于版滚筒最大可印刷长度时，印刷出来的纸张上相邻两印刷图案之间产生较大的空白(无印刷图案区域)，这不利于印刷会造成较大的浪费。为了能够实现较理想的印刷，在版滚筒和转印滚筒上分别设计有缺口，两缺口相应同步设置，当转印滚筒上的缺口朝向压印滚筒时，印刷品(如纸张、薄膜)在前后牵引动力驱动下回退消除纸张上的印刷空白，正向运行则进行印刷，形成一进一退的间歇式印刷方式，这种印刷方式明显的印刷缺陷是：一方面导致印刷速度提不上去，影响印刷效率；另一方面使印刷品受到的张力不平稳，容易产生拉伸变形，影响印刷精度和印刷效果。
发明内容
鉴于背景技术中存在的技术问题，本发明所解决的技术问题旨在提供一种能够更换不同外径的版滚筒和转印滚筒，使版滚筒和转印滚筒的外表面周长(即筒面)与印刷品的印刷图案长度对应，印刷时无需回退，印刷品走料平稳，可提高印刷速度和印刷效率，提高印刷精度和印刷效果的胶印机的印刷机构。
为解决上述技术问题，本发明采用如下的技术方案：胶印机的印刷机构，包括有版滚筒、转印滚筒和压印滚筒，其特征在于：版滚筒套设在版轴上，转印滚筒套设在转印轴上，压印滚筒在机架上进行转动设置，版滚筒与转印滚筒对应匹配，版滚筒与转印滚筒保持压接对滚，版轴在机架上进行转动设置，转印轴绕其轴心线转动设置，转印轴的轴心线的位置在转印轴运行轨迹上进行调节设置，选用不同规格外径的转印滚筒时，调节转印轴轴心线在转印轴运行轨迹上的位置，使不同规格外径的转印滚筒均与压印滚筒保持压接对滚。
机架上设有曲线槽，曲线槽形成转印轴运行轨迹，转印滚筒的转印轴通过安装座设置在曲线槽上，转印滚筒的转印轴在安装座上转动设置，安装座在曲线槽上位置调节设置。
转印轴运行轨迹为圆弧轨迹，任选三个不同规格外径的转印滚筒，该圆弧轨迹上对应具有转印轴的三个轴心线位置，在三个轴心线位置上的转印滚筒分别与压印滚筒保持压接对滚。
三个不同规格外径分别选取最大外径、最小外径以及中间外径。
压印滚筒在机架上的径向位置进行调节设置。
转印轴设置在摆臂上转动，摆臂在机架上摆动设置，摆臂摆动形成转印轴运行轨迹的圆弧轨迹并且使转印轴的轴心线在该圆弧轨迹上进行位置调节。
摆臂通过摆臂轴设置在机架上摆动，摆臂轴在机架上的径向位置进行调节设置。
摆臂由驱动装置带动在机架上绕摆臂轴进行往复摆动，该驱动装置包括有推杆、顶杆、气缸传动装置和丝杆传动装置，气缸传动装置包括有气缸，丝杆传动装置包括有丝杆、丝母和滑块，丝母设置在滑块上，丝杆由动力源驱动传动丝母带动滑块在机架上升降，推杆铰接在摆臂上，顶杆铰接在滑块上，推杆与顶杆相互铰接，推杆或/和顶杆还与气缸传动连接。
气缸采用双行程气缸或双气缸，气缸的活塞杆与推杆、顶杆铰接在一起，气缸在气缸座上摆动设置。
机架上设有版滚筒更换口，在版滚筒更换口上配设第一端盖，第一端盖内设有轴承与版轴配合；机架上设有转印滚筒更换口，摆臂位于转印滚筒更换口侧部，摆臂上设有第二端盖，第二端盖设置在摆臂的端盖安装口上，第二端盖内设有轴承与转印轴配合。
本发明的有益效果为，该胶印机的印刷机构可以更换不同外径规格的版滚筒和转印滚筒，实现不同印刷图案长度的印刷，并确保卷筒纸上的印刷图案各单元间连续(空白几乎没有)，卷筒纸使用率提升且卷筒纸无需回退，有效提高印刷速度和印刷效率，且不会影响纸张走纸，纸张张力平稳，可提高印刷精度。因此，本发明与现有技术相比具有突出的实质性特点和显著的进步。
附图说明
下面结合附图描述本发明的实施方式及实施例的有关细节及工作原理。
图1为本发明的结构示意图。
图2为图1中A-A剖面。
图3为图1中B-B剖面。
具体实施方式
参见附图，本实施方式中胶印机的印刷机构，包括有版滚筒1、转印滚筒4和压印滚筒2，通过三个滚筒配合实现纸张印刷。版滚筒1套设在版轴16上，转印滚筒套4设在转印轴21上，因此可以在轴更换不同外径规格的版滚筒和转印滚筒。轴和滚筒之间设置定位销和缺口进行相互定位配合，确保轴与滚筒之间无相对滑动。也可以在滚筒内孔设置弹性层，在轴上设置气孔，通过气源、气阀控制气孔吹气，滚筒套设在轴上时，轴气孔将吹气涨开滚筒内孔的弹性层，滚筒套设到位后，停止气孔吹气，滚筒内孔弹性层收缩抱紧在轴。
压印滚筒2在机架上进行转动设置，压印滚筒配置电机19(如伺服电机)驱动进行转动，版滚筒1与转印滚筒4对应匹配，即转印滚筒4的筒面对应匹配版滚筒1上的图案单元N倍，N为正整数，优选一倍或二倍，以便印刷图案转移。比如版滚筒1与转印滚筒4规格(一般指外径)相同或略微偏差，转印滚筒4的筒面刚好能够对应匹配版滚筒1上的一个图案单元(一倍关系)；或者使转印滚筒4筒面(即外表面周长)对应二个的版滚筒上的图案单元(二倍关系)。参见附图，本实施例中，采用一倍关系，将选用规格相同的版滚筒与转印滚筒。
版滚筒1与转印滚筒4保持压接对滚，版滚筒上的图案将转印到转印滚筒上，版轴16在机架3上进行转动设置，版轴16配置电机13(如伺服电机)驱动进行转动，并带动版轴上的版滚筒进行转动。转印轴21绕其轴心线转动设置，转印轴21配置电机20(如伺服电机)驱动进行转动，并带动转印轴21上的转印滚筒4进行转动，转印轴21的轴心线的位置在转印轴运行轨迹40上进行调节设置，选用不同规格外径的转印滚筒时，调节转印轴21轴心线在转印轴运行轨迹40上的位置，使不同规格外径的转印滚筒4均与压印滚筒2保持压接对滚。转印滚筒与版滚筒外径对应匹配，并保持压接对滚，同时转印滚筒与压印滚筒保持压接对滚，因此印刷不同长度的图案时，就可以更换相对应的版滚筒和转印滚筒，再调节转印轴的轴心线位置，让转印滚筒与版滚筒保持压接对滚、转印滚筒与压印滚筒保持压接对滚，卷筒纸上的印刷图案各单元间连续，卷筒纸使用率提升且卷筒纸无需回退，有效提高印刷速度和效率，且纸张张力平稳，走料稳定。
机架3上设有曲线槽，如在机架3的墙板上开设曲线槽，曲线槽形成转印轴运行轨迹，转印滚筒的转印轴21通过安装座设置在曲线槽上，转印滚筒的转印轴在安装座上转动设置，安装座在曲线槽上位置调节设置，通过调整安装座在曲线槽上的位置调节转印轴轴心线在转印轴运行轨迹上的位置。
将转印轴运行轨迹40设置为圆弧轨迹，任取三个不同规格外径的转印滚筒，该圆弧 轨迹上相对应具有转印轴的三个轴心线位置，即三个轴心线位置对应三个不同规格外径的转印滚筒的安装位置，在三个轴心线位置上的转印滚筒分别与压印滚筒保持压接对滚(理想状态为保持外切)。三个轴心线位置刚好能够确定圆弧轨迹，圆弧轨迹上确保三个规格的转印滚筒能够与版滚筒以及压印滚筒保持保持压接对滚。圆弧轨迹上分别在这三个轴心线位置的附近的其它位置，通过施加不同压力，也能够让其它规格(任取三个规格之外)外径的转印滚筒与压印滚筒和版辊筒保持压接对滚。三个不同规格外径可以分别选取最大外径、最小外径以及中间外径，比如245mm、145mm、200mm。
压印滚筒2在机架3上的径向位置进行调节设置，即能够改变调整压印滚筒2在机架上径向位置。在压印滚筒初始位置处，初始位置是指在压印滚筒进行位置调整之前，位于三个轴心线位置上的转印滚筒分别与初始位置处压印滚筒保持压接对滚。调节设置可以将压印滚筒2的中心转轴设置在偏心轴套23上，通过调整偏心轴套在机架上的位置从而对压印滚筒进行径向位置调节。将转印轴运行轨迹40设置为圆弧轨迹，很难确保除圆弧轨迹的三个轴心线位置之外的转印轴上的转印滚筒同时与版滚筒以及压印滚筒保持压接对滚，通过对压印滚筒进行径向外置调节，则可以确保各个滚筒之间压接对滚。
圆弧轨迹可以为在机架上设置圆弧槽的形式。本实施例中，将以摆臂5、24的形式，具体为，将转印滚筒的转印轴21设置在摆臂5、24(分左右摆臂)上转动，转印轴21绕其轴心线转动，摆臂5、24在机架3上摆动设置，摆臂5、24摆动形成圆弧轨迹，即转印轴运行轨迹40，通过摆动使转印轴21的轴心线在该圆弧轨迹上进行位置调节。
采用摆臂形式形成的圆弧轨迹同样存在三个轴心线位置刚好能够确定圆弧轨迹，圆弧轨迹上至少确保三个规格的转印滚筒能够与版滚筒以及压印滚筒保持保持压接对滚(理想状态为保持外切)，至少能够实现三个规格的调节。三个规格的附近也能够通过压力调节保持压接对滚，但是圆弧轨迹上的其它位置的转印轴上的转印滚筒难以同时与版滚筒以及压印滚筒保持压接对滚，为确保各个滚筒之间压接对滚，除了对压印滚筒在机架上的径向位置进行调节设置外，也可以对圆弧轨迹进行调节设置，调节设置还能改变调节滚筒间的印刷压力大小。比如，摆臂5、24通过摆臂轴22设置在机架3上摆动，摆臂轴22在机架3上的径向位置进行调节设置，即能够改变调整摆臂轴22在机架上径向位置，在摆臂轴22初始位置处，初始位置是指在摆臂轴进行位置调整之前，位于三个轴心线位置上的转印滚筒分别与压印滚筒保持压接对滚，通过对摆臂轴的径向位置进行调节，从而使圆弧轨迹进行位置调节。调节设置可以将摆臂轴设置在偏心轴套上，通过调整偏心轴套在机架上的位置从而对摆臂轴进行径向位置调节。
摆臂5、24由驱动装置带动在机架3上绕摆臂轴进行往复摆动，该驱动装置可以直接采用气缸顶推摆臂或采用丝杆配电机驱动摆臂摆动。本实施例中作为优选将采用如下结构：该驱动装置包括有推杆6、顶杆8、气缸传动装置和丝杆传动装置，气缸传动装置包括有气缸，丝杆传动装置包括有丝杆11、丝母和滑块9，丝母设置在滑块9上，丝杆11由动力源12(如伺服电机、力矩电机)驱动传动丝母带动滑块9在机架上升降，机架上设置导轨7供滑块进行升降，推杆6铰接在摆臂5上，顶杆8铰接在滑9块上，推杆与顶杆相互铰接，推杆与气缸传动连接或者顶杆与气缸传动连接或者推杆和顶杆之间的铰接点与气缸传动连接，由气缸配合驱动推杆和顶杆动作。本实施例中，驱动装置工作时，动力源12驱动丝杆，丝杆11传动丝母带动滑块9在机架上升降，滑块将通过顶杆、推杆以及气缸配合带动摆臂来回摆动，初步到位后，动力源停止驱动丝杆，气缸通气源加压顶住摆臂，通过气缸的气压变化调节，能够调节摆臂上转印滚筒保持与压印滚筒和版滚筒压接对滚的压力。当丝杆传动装置的滑块通过丝杆和丝母升降锁定在机架上后，能避免印刷时转印滚筒跳动、抖动，避免出现墨杠现象。气缸采用双行程气缸或双气缸，气缸的活塞杆与推杆、顶杆铰接在一起，气缸在气缸座上摆动设置，气缸采用双行程气缸或双气缸能够进行双行程工作，双行程中可以设置一个小行程，可以在进行摆臂小行程摆动，将转印滚筒与其它两滚筒分开，进行检修或调试等。图中采用双气缸25、26。
机架3上设有版滚筒更换口，在版滚筒更换口上配设第一端盖17，第一端盖17内设有轴承18与版轴16配合；机架3上设有转印滚筒更换口15，摆臂5位于转印滚筒更换口15侧部，本实施例中为外侧，当然也可以设置在内侧。摆臂5上设有第二端盖27，第二端盖设置在摆臂的端盖安装口上，第二端盖27内设有轴承10与转印轴21配合，还可以在墙板上设有槽供摆臂上的转印轴活动。本实施例中摆臂5、24分设在机架墙板的左右两侧，版滚筒更换口、转印滚筒更换口均位于右侧的机架墙板上，右侧摆臂5上设置端盖安装口供第二端盖27安装。以摆臂为例进行换滚筒工作说明，换滚筒的时候，摆臂摆动至转印滚筒更换口的位置，将右侧摆臂上的第二端盖拆下与转印轴分离，拆下分离后摆臂再摆动让出转印滚筒更换口的位置，就可以将转印轴上的转印滚筒进行更换，更换完后摆臂摆动至转印轴处重新将第二端盖装上与转印轴配合；另外墙板上第一端盖打开，从版滚筒更换口处将版滚筒从版轴上拆下进行更换，更换后再将第一端盖重新装上。

Claims (10)

  1. 胶印机的印刷机构，包括有版滚筒(1)、转印滚筒(4)和压印滚筒(2)，其特征在于：版滚筒(1)套设在版轴(16)上，转印滚筒(4)套设在转印轴(21)上，压印滚筒(2)在机架(3)上进行转动设置，版滚筒(1)与转印滚筒(4)对应匹配，版滚筒(1)与转印滚筒(4)保持压接对滚，版轴(16)在机架(3)上进行转动设置，转印轴(21)绕其轴心线转动设置，转印轴(21)的轴心线的位置在转印轴运行轨迹(40)上进行调节设置，选用不同规格外径的转印滚筒(4)时，调节转印轴(21)轴心线在转印轴运行轨迹(40)上的位置，使不同规格外径的转印滚筒(4)均与压印滚筒(2)保持压接对滚。
  2. 如权利要求1所述的胶印机的印刷机构，其特征在于：机架(3)上设有曲线槽，曲线槽形成转印轴运行轨迹(40)，转印滚筒(4)的转印轴(21)通过安装座设置在曲线槽上，转印滚筒(4)的转印轴(21)在安装座上转动设置，安装座在曲线槽上位置调节设置。
  3. 如权利要求1所述的胶印机的印刷机构，其特征在于：转印轴运行轨迹(40)为圆弧轨迹，任选三个不同规格外径(a、b、c)的转印滚筒(4)，该圆弧轨迹上对应具有转印轴(21)的三个轴心线位置，在三个轴心线位置上的转印滚筒(4)分别与压印滚筒(2)保持压接对滚。
  4. 如权利要求1所述的胶印机的印刷机构，其特征在于：版滚筒(1)与转印滚筒(4)对应匹配时，转印滚筒(4)的筒面对应匹配版滚筒(1)上的图案单元N倍，N为正整数。
  5. 如权利要求3所述的胶印机的印刷机构，其特征在于：压印滚筒(2)在机架(3)上的径向位置进行调节设置。
  6. 如权利要求3所述的胶印机的印刷机构，其特征在于：转印轴(21)设置在摆臂(5、24)上转动，摆臂(5、24)在机架(3)上摆动设置，摆臂(5、24)摆动形成转印轴运行轨迹(40)的圆弧轨迹并且使转印轴(21)的轴心线在该圆弧轨迹上进行位置调节。
  7. 如权利要求6所述的胶印机的印刷机构，其特征在于：摆臂(5、24)通过摆臂轴(22)设置在机架(3)上摆动，摆臂轴(22)在机架(3)上的径向位置进行调节设置。
  8. 如权利要求6所述的胶印机的印刷机构，其特征在于：摆臂(5、24)由驱动装置带动在机架(3)上绕摆臂轴(22)进行往复摆动，该驱动装置包括有推杆(6)、顶杆(8)、气缸传动装置和丝杆传动装置，气缸传动装置包括有气缸，丝杆传动装置包括有丝杆(11)、丝母和滑块(9)，丝母设置在滑块(9)上，丝杆由动力源驱动传动丝母带动滑块(9)在机架(3)上升降，推杆(6)铰接在摆臂(5)上，顶杆(8)铰接在滑块(9)上，推杆与顶杆相互铰接，推杆或/和顶杆还与气缸传动连接。
  9. 如权利要求8所述的胶印机的印刷机构，其特征在于：气缸采用双行程气缸或双气缸， 气缸的活塞杆与推杆、顶杆铰接在一起，气缸在气缸座上摆动设置。
  10. 如权利要求6所述的胶印机的印刷机构，其特征在于：机架(3)上设有版滚筒更换口，在版滚筒更换口上配设第一端盖(17)，第一端盖(17)内设有轴承(18)与版轴(16)配合；机架(3)上设有转印滚筒更换口，摆臂(5)位于转印滚筒更换口(15)侧部，摆臂(5)上设有第二端盖(27)，第二端盖(27)设置在摆臂(5)的端盖安装口上，第二端盖(27)内设有轴承与转印轴(21)配合。
PCT/CN2018/089126 2017-09-14 2018-05-31 胶印机的印刷机构 WO2019052228A1 (zh)

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DK18857136.8T DK3632684T3 (da) 2017-09-14 2018-05-31 Trykkemekanisme til offset-trykkemaskine
ES18857136T ES2905166T3 (es) 2017-09-14 2018-05-31 Mecanismo de impresión de una máquina de impresión offset
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