CN107584861B - Printing unit comprising offset printing unit and flexo printing unit - Google Patents
Printing unit comprising offset printing unit and flexo printing unit Download PDFInfo
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- CN107584861B CN107584861B CN201710909332.5A CN201710909332A CN107584861B CN 107584861 B CN107584861 B CN 107584861B CN 201710909332 A CN201710909332 A CN 201710909332A CN 107584861 B CN107584861 B CN 107584861B
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- 238000007645 offset printing Methods 0.000 title claims abstract description 137
- 238000007639 printing Methods 0.000 title claims abstract description 125
- 238000010023 transfer printing Methods 0.000 claims abstract description 86
- 230000005540 biological transmission Effects 0.000 claims description 20
- 238000007774 anilox coating Methods 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000013329 compounding Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 6
- 238000007647 flexography Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 238000005096 rolling process Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 238000002788 crimping Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The printing unit comprises an offset printing unit and a flexo printing unit, wherein the offset printing unit is connected with the flexo printing unit in series, the flexo printing cylinder of the flexo printing unit can change the specification on a flexo printing shaft, the offset printing cylinder of the offset printing unit is sleeved on the offset printing shaft, the transfer printing cylinder is sleeved on the transfer printing shaft, an offset printing impression cylinder is rotatably arranged, the offset printing cylinder is correspondingly matched with the transfer printing cylinder, the offset printing cylinder is in press-connection with the transfer printing cylinder and is in press-connection with a counter roller, the offset printing shaft is rotatably arranged, the transfer printing shaft rotates around the shaft axis, the position of the shaft axis is adjusted on the running track of the transfer printing shaft, and when the transfer printing cylinders with different specifications and external diameters are selected, the position of the shaft axis of the transfer printing shaft on the running track of the transfer printing shaft is adjusted, so that the transfer printing cylinders with different specifications are in press-connection with the offset printing impression cylinder; the specifications of the flexographic plate cylinder, the offset plate cylinder and the transfer printing cylinder can be changed, the offset printing unit and the flexographic printing unit are connected in series and are printed in a continuous mode, the requirement that the offset printing is carried out in the printing process is met, the lengths of presswork with different specifications are met, and a technical basis is provided.
Description
Technical Field
The invention relates to a printing machine, in particular to a printing unit of a printing machine with offset printing and flexo printing.
Background
Offset printing and flexo printing are two more common printing processes. The offset printing process is high in precision and can clearly restore the color, contrast and gradation of the original manuscript, and offset printing is carried out by matching an offset plate cylinder, a transfer printing cylinder and an offset impression cylinder; the flexography printing technology is characterized by simple structure, strong material adaptability, small imprinting force, low printing cost and environmental protection, and the flexography printing technology carries out flexography by matching a flexography plate cylinder, an anilox roller and a flexography imprinting cylinder.
At present, the intermittent offset printing mode is mostly adopted in offset printing, and the printing length (the length of a finger printing pattern) of different specifications is adapted through the intermittent feeding and returning of a printing material. And the flexo printing mostly adopts the continuous printing mode, and the flexo printing is through the position change of lift flexo plate axle, changes its flexo plate cylinder more easily to the printing length of adaptation different specifications.
In order to achieve the desired printing effect, it is necessary to combine the offset printing process with the flexo printing process, and the common practice is to print on the offset printing machine first and then perform the second flexo printing on the flexo printing machine, which has the following disadvantages: two printers need to be purchased, the investment cost is higher, the printing period is long in two times, the printing cost is high, and the printing precision is low. If the offset printing mode and the flexo printing mode can be completed on one printing machine, the printing mode is ideal, but the existing intermittent offset printing mode and the continuous flexo printing mode can not be smoothly connected to realize on-line printing.
Disclosure of Invention
In view of the technical problems in the background art, the technical problem to be solved by the invention is to provide a printing unit comprising an offset printing unit and a flexo printing unit, which can realize online offset printing and flexo printing and can be suitable for printing unit lengths with different specifications.
In order to solve the technical problems, the invention adopts the following technical scheme: printing unit who contains offset printing unit and flexographic printing unit, including offset printing unit and flexographic printing unit, the offset printing unit sets up one at least, the flexographic printing unit sets up one at least, the offset printing unit sets up with the flexographic printing unit is established ties, the flexographic printing unit includes flexographic plate cylinder, anilox roller and flexographic printing impression cylinder, flexographic plate cylinder and anilox roller, flexographic printing impression cylinder cooperation printing, flexographic plate cylinder sets up on the flexographic plate axle, the flexographic plate axle sets up its characterized in that on the frame wallboard of flexographic printing unit goes up and down: the offset printing unit comprises an offset printing plate cylinder, a transfer printing cylinder and an offset printing impression cylinder, wherein the offset printing plate cylinder is sleeved on an offset printing plate shaft, the transfer printing cylinder sleeve is sleeved on the transfer printing shaft, the offset printing impression cylinder is rotatably arranged on a frame wallboard of the offset printing unit, the offset printing plate cylinder is correspondingly matched with the transfer printing cylinder, the offset printing plate cylinder and the transfer printing cylinder keep crimping and rolling, the offset printing plate shaft is rotatably arranged on the frame wallboard of the offset printing unit, the transfer printing shaft is rotatably arranged around the axial lead of the transfer printing shaft, the position of the axial lead of the transfer printing shaft is adjusted and arranged on the moving track of the transfer printing shaft, when the transfer printing cylinders with different specifications and external diameters are selected, the position of the axial lead of the transfer printing shaft on the moving track of the transfer printing shaft is adjusted, and the transfer printing cylinders with different specifications and external diameters all keep crimping and rolling with the offset printing cylinder.
The transfer printing shaft has an arc track, and optionally three transfer printing cylinders with different specifications and outer diameters are selected, the arc track corresponds to three axis positions of the transfer printing shaft, and the transfer printing cylinders at the three axis positions are respectively kept in press-contact with the offset printing impression cylinder.
The offset plate cylinder is correspondingly matched with the transfer printing cylinder, and the offset plate cylinder is correspondingly matched with the flexible plate cylinder.
The radial position of the blanket impression cylinder on the frame wall of the blanket unit is set adjustably.
The transfer shaft is arranged on a swing arm to rotate, the swing arm is arranged on a frame wall plate of the offset printing unit in a swinging mode, the swing arm swings to form an arc track of the moving track of the transfer shaft, and the position of the axis line of the transfer shaft is adjusted on the arc track.
The swing arm is arranged on a frame wallboard of the offset printing unit through a swing arm shaft to swing, and the radial position of the swing arm shaft on the frame wallboard of the offset printing unit is adjusted and arranged.
The swing arm is driven by a driving device to reciprocate on a frame wallboard of the offset printing unit around a swing arm shaft, the driving device comprises a push rod, an ejector rod, a cylinder transmission device and a lead screw transmission device, the cylinder transmission device comprises a cylinder, the lead screw transmission device comprises a lead screw, a nut and a slide block, the nut is arranged on the slide block, the lead screw drives the transmission nut by a power source to drive the slide block to lift on the frame wallboard of the offset printing unit, the push rod is hinged on the swing arm, the ejector rod is hinged on the slide block, the push rod is hinged with the ejector rod, and the push rod or/and the ejector rod are/is also in transmission connection with the cylinder; the cylinder adopts a double-stroke cylinder or a double-cylinder, a piston rod of the cylinder is hinged with a push rod and an ejector rod, and the cylinder is arranged on a cylinder seat in a swinging manner; a plate cylinder replacing opening is formed in a frame wall plate of the offset printing unit, a first end cover is arranged on the plate cylinder replacing opening, and a bearing is arranged in the first end cover and matched with the offset printing plate shaft; be equipped with the rendition cylinder on offset printing unit's the frame wallboard and change the mouth, the swing arm is located the rendition cylinder and changes a mouthful lateral part, is equipped with the second end cover on the swing arm, and the second end cover setting is equipped with bearing and rendition axle cooperation on the end cover installing port of swing arm in the second end cover.
The printing unit is also connected in series with one or more of a hot stamping unit, a silk screen unit, a code spraying unit, a glazing unit, a film covering unit, a die cutting unit, a slitting unit and a compounding unit.
The flexible printing unit printing device has the advantages that the specifications of the flexible printing plate cylinder of the flexible printing unit, the offset printing plate cylinder in the offset printing unit and the transfer printing cylinder can be adjusted and replaced, the offset printing unit and the flexible printing unit are connected in series and continuously printed, the printing requirements of the printing process for both offset printing and flexible printing are met, the lengths of printed matters with different specifications are met, and a technical basis is provided. Therefore, compared with the prior art, the invention has outstanding substantive features and remarkable progress.
Drawings
The following describes details and operational principles of embodiments and examples of the present invention with reference to the drawings.
FIG. 1 is a schematic view of the present invention, which includes a large offset plate cylinder and a small offset plate cylinder.
FIG. 2 is a schematic view of the offset printing unit according to the present invention.
Fig. 3 isbase:Sub>A cross-sectional view taken along linebase:Sub>A-base:Sub>A of fig. 2.
Fig. 4 is a cross-sectional view taken along line B-B in fig. 2.
Detailed Description
Referring to the attached drawings, the printing unit including the offset printing unit and the flexo printing unit in the embodiment includes an offset printing unit a and a flexo printing unit B, at least one offset printing unit a is provided, at least one flexo printing unit B is provided, the offset printing unit a and the flexo printing unit B are arranged in series, the series connection positions of each offset printing unit and each flexo printing unit are set according to requirements, whether each unit works or not can be controlled during printing (for example, the units can be controlled by a computer or a PLC), and printing materials of the units which do not work directly pass through the printing units without printing. In the embodiment, two offset printing units A and two flexo printing units B are arranged, and the four offset printing units A and the four flexo printing units B are arranged in series and are sequentially arranged. Other functional mechanisms such as a hot stamping unit, a screen unit, a code spraying unit, a glazing unit, a film covering unit, a die cutting unit, a slitting unit, a compounding unit and the like can be connected in series in the printing unit, one or more of the functional mechanisms can be connected in series, the series connection position can be adjusted and set randomly according to requirements, and for example, the flexible printing unit, the offset printing unit, the flexible printing unit and the die cutting unit are sequentially arranged. The printing unit including the offset printing unit and the flexo printing unit has a head connecting unwinding mechanism 56 and a tail connecting winding mechanism 57 to form a printing machine, and the flexo printing unit and the offset printing unit can be arranged on a machine base 60.
The flexographic printing unit B comprises a flexographic plate cylinder 51, an anilox roller 52, a flexographic impression cylinder 53 and a flexographic curing device 58 (such as a UV lamp), wherein the flexographic plate cylinder 51 is matched with the anilox roller 52 and the flexographic impression cylinder 53 for printing, the flexographic plate cylinder 51 is arranged on a flexographic plate shaft 54, the flexographic plate shaft 54 is arranged on a rack wallboard 55 of the flexographic printing unit in a lifting manner, when the plate is changed, the flexographic plate shaft 54 is lifted, the flexographic plate cylinder 53 is changed, the flexographic plate cylinder can be changed into a flexographic plate cylinder with different specifications, and the flexographic printing unit B is suitable for printing unit lengths with different specifications. The flexographic plate shaft 54 descends, the flexographic plate cylinder on the flexographic plate shaft is in press-fit and roll-to-roll fit with the anilox roller and the flexographic impression cylinder, and the flexographic plate cylinder descends and is located between the anilox roller and the flexographic impression cylinder to be in press-fit and roll-to-roll fit for flexographic printing, so that details of the prior art are omitted.
The flexographic unit B can meet the requirements of printing pattern lengths of different specifications by replacing different flexographic plate cylinders under the condition of continuous (non-intermittent rollback) in series connection and on-line connection. In order to enable the offset printing unit a to perform continuous printing (without intermittent rewinding) and to satisfy the printing unit lengths of different specifications even in the case where the flexo unit and the offset printing unit are connected in series, the offset printing unit is improved in the present embodiment.
The offset printing unit a includes an offset plate cylinder 1, a transfer cylinder 4 and an offset impression cylinder 2, which cooperate to print sheets of paper, and of course, are cured by an offset curing device 59 (e.g., a UV lamp). The offset plate cylinder 1 is sleeved on the offset plate shaft 16, and the transfer printing cylinder 4 is sleeved on the transfer printing shaft 21, so that the offset plate cylinder and the transfer printing cylinder with different external diameter specifications can be replaced on the shafts. A positioning pin and a notch are arranged between the shaft and the roller for mutual positioning and matching, so that no relative sliding between the shaft and the roller is ensured. The elastic layer can also be arranged in the inner hole of the roller, the air hole is arranged on the shaft, the air hole is controlled to blow air through the air source and the air valve, when the roller sleeve is sleeved on the shaft, the air hole of the shaft blows air to expand the elastic layer in the inner hole of the roller, after the roller sleeve is arranged in place, the air hole stops blowing air, and the elastic layer in the inner hole of the roller contracts and is tightly held on the shaft.
The blanket impression cylinder 2 is rotatably arranged on the frame wall 3 of the blanket unit, the blanket impression cylinder is rotatably driven by a motor 19 (e.g. a servomotor) and the blanket cylinder 1 is correspondingly matched to the transfer cylinder 4, i.e. the cylinder surface of the transfer cylinder 4 is correspondingly matched to the pattern elements on the blanket cylinder 1 by N times, N being a positive integer, preferably by one or two times, in order to transfer the printed pattern efficiently. For example, the specifications (generally, the outer diameters) of the offset plate cylinder 1 and the transfer printing cylinder 4 are the same or slightly deviated, and the cylinder surface of the transfer printing cylinder 4 can be just matched with one pattern unit (one time relation) on the offset plate cylinder 1; or the cylindrical surface (i.e., the outer circumferential length) of the transfer cylinder 4 may be made to correspond to the pattern elements on the two offset plate cylinders (double relationship). Referring to the drawings, in the present embodiment, the offset plate cylinder and the transfer cylinder having the same specification are selected by using a one-time relationship.
The offset plate cylinder 1 and the transfer printing cylinder 4 are kept in press-contact and opposite-rolling, patterns on the offset plate cylinder are transferred onto the transfer printing cylinder, the offset plate shaft 16 is arranged on the frame wall plate 3 of the offset printing unit in a rotating mode (around the axis line of the offset printing unit), and the offset plate shaft 16 is driven by a motor 13 (such as a servo motor) to rotate and drive the offset plate cylinder on the offset plate shaft to rotate. The transfer shaft 21 is rotatably disposed around its axial center line, the transfer shaft 21 is configured with a motor 20 (such as a servo motor) to rotate and drive the transfer cylinder 4 on the transfer shaft 21 to rotate, the position of the axial center line of the transfer shaft 21 is adjusted on the transfer shaft moving track 40, when the transfer cylinders 4 with different specifications and outer diameters are selected, the position of the axial center line of the transfer shaft 21 on the transfer shaft moving track 40 is adjusted, so that the transfer cylinders 4 with different specifications and outer diameters are all in press-contact with the offset impression cylinder 2.
In the embodiment, the working principle of the printing unit including the offset printing unit and the flexo printing unit is that under the condition of combined printing of offset printing and flexo printing in series, the specifications of the flexographic plate cylinder of the flexo printing unit, the offset plate cylinder in the offset printing unit and the transfer printing cylinder can be adjusted and replaced, so that a technical basis is provided for realizing continuous printing and meeting the lengths of printing units with different specifications. The transfer printing cylinder and the offset printing plate cylinder are correspondingly matched in outer diameter and are kept in compression joint with each other, and meanwhile the transfer printing cylinder and the offset printing impression cylinder are kept in compression joint with each other, so that when patterns with different lengths are printed, the corresponding offset printing plate cylinder and the corresponding transfer printing cylinder can be replaced, the position of the axis of the transfer printing shaft is adjusted, the transfer printing cylinder and the offset printing plate cylinder are kept in compression joint with each other, the transfer printing cylinder and the offset printing impression cylinder are kept in compression joint with each other, all units of the printed patterns on the web are continuous, the web utilization rate is improved, the web does not need to return, the printing speed and efficiency are effectively improved, the paper tension is stable, and the material feeding is stable. The offset plate cylinder and the flexible plate cylinder are correspondingly matched so that the printing patterns correspond.
If the rack wall plate 3 of the offset printing unit is provided with a curved groove, the curved groove forms a transfer printing shaft running track, the transfer printing shaft 21 of the transfer printing cylinder is arranged on the curved groove through an installation seat, the transfer printing shaft of the transfer printing cylinder is arranged on the installation seat in a rotating mode, the installation seat is arranged on the curved groove in a position adjusting mode, and the position of the shaft axis of the transfer printing shaft on the transfer printing shaft running track is adjusted by adjusting the position of the installation seat on the curved groove.
The operation track 40 of the transfer printing shaft is set to be an arc track, three transfer printing rollers with different specifications and outer diameters are selected, three axis positions of the transfer printing shaft are correspondingly arranged on the arc track, namely the three axis positions correspond to the installation positions of the three transfer printing rollers with different specifications and outer diameters, and the transfer printing rollers at the three axis positions are respectively kept in pressure contact with the offset printing impression roller and are oppositely rolled (ideally kept in an external tangent state). The three axial lead positions can just determine an arc track, and the arc track ensures that the transfer printing cylinders with three specifications can keep pressure-welding and rolling with the offset printing plate cylinder and the offset printing impression cylinder. By applying different pressures to the circular arc locus at other positions in the vicinity of the three axial center positions, the transfer cylinder having an outer diameter of other specifications (other than the three specifications, if any) can be held in pressure-contact with the blanket impression cylinder and the plate cylinder. The maximum outer diameter, the minimum outer diameter and the intermediate outer diameter can be selected from three different specifications of outer diameters, such as 245mm, 145mm and 200mm.
The radial position of the blanket impression cylinder 2 on the frame wall 3 of the offset printing unit is set adjustably, i.e. the radial position of the blanket impression cylinder 2 on the frame wall 3 of the offset printing unit can be adjusted variably. At the home position of the blanket impression cylinder, the home position means that the transfer cylinders located at the three axial line positions are held in press-contact with the blanket impression cylinder at the home position, respectively, before the position adjustment of the blanket impression cylinder. The adjustment arrangement makes it possible to set the central axis of rotation of the blanket impression cylinder 2 on the eccentric sleeve 23, by adjusting the position of the eccentric sleeve on the frame wall 3 of the blanket unit, thereby effecting radial position adjustment of the blanket impression cylinder. By setting the transfer shaft locus 40 to be an arc locus, it is difficult to ensure that the transfer cylinders on the transfer shaft except for the three axial positions of the arc locus are simultaneously held in press-contact with the offset plate cylinder and the offset impression cylinder, and by performing radial external adjustment on the offset impression cylinder, press-contact between the cylinders can be ensured.
The circular arc track may be in the form of a circular arc groove provided in the frame wall 3 of the offset printing unit. In the present embodiment, the transfer shaft 21 of the transfer cylinder is rotatably mounted on the swing arms 5 and 24 (left and right swing arms), the transfer shaft 21 rotates around the shaft axis, the swing arms 5 and 24 are rotatably mounted on the frame wall panel 3 of the offset printing unit, the swing arms 5 and 24 swing to form an arc track, i.e., a transfer shaft moving track 40, and the shaft axis of the transfer shaft 21 is adjusted in position on the arc track by swinging.
The arc track formed by the swing arm has three axial lead positions, so that the arc track can be determined, the transfer printing cylinders with at least three specifications can be kept in press connection with the offset printing plate cylinder and the offset printing impression cylinder (ideally, the transfer printing cylinders are kept in an externally tangent state) on the arc track, and the adjustment of at least three specifications can be realized. The pressure adjustment can be performed near the three specifications, but the pressure adjustment can hardly maintain the pressure-contact rollers on the transfer shafts at other positions on the circular arc track with the offset plate cylinder and the offset impression cylinder at the same time, so that the pressure-contact rollers between the cylinders can be ensured by adjusting the radial position of the offset impression cylinder on the frame wall 3 of the offset printing unit, adjusting the circular arc track, and changing the printing pressure between the cylinders. For example, the swing arms 5 and 24 are arranged on the frame wall plate 3 of the offset printing unit to swing through the swing arm shaft 22, the radial position of the swing arm shaft 22 on the frame wall plate 3 of the offset printing unit can be adjusted, namely, the radial position of the swing arm shaft 22 on the frame wall plate 3 of the offset printing unit can be changed and adjusted, at the initial position of the swing arm shaft 22, the initial position refers to that before the position adjustment of the swing arm shaft, the transfer cylinders positioned at three axial lead positions are respectively kept in pressure contact with the offset printing cylinder to form a pair of rollers, and the radial position of the swing arm shaft is adjusted, so that the position adjustment of the arc track is performed. The adjustment arrangement can set the swing arm shaft on the eccentric sleeve, and the radial position of the swing arm shaft is adjusted by adjusting the position of the eccentric sleeve on the frame wall plate 3 of the offset printing unit.
The swing arms 5 and 24 are driven by a driving device to swing back and forth on the frame wallboard 3 of the offset printing unit around a swing arm shaft, and the driving device can directly adopt an air cylinder to push the swing arms or adopt a lead screw distributor to drive the swing arms to swing. The following structure is preferably adopted in this embodiment: the driving device comprises a push rod 6, an ejector rod 8, a cylinder transmission device and a lead screw transmission device, wherein the cylinder transmission device comprises a cylinder, the lead screw transmission device comprises a lead screw 11, a nut and a sliding block 9, the nut is arranged on the sliding block 9, the lead screw 11 drives the transmission nut by a power source 12 (such as a servo motor and a torque motor) to drive the sliding block 9 to lift on a rack wallboard 3 of the offset printing unit, a guide rail 7 is arranged on the rack wallboard 3 of the offset printing unit to lift the sliding block, the push rod 6 is hinged on a swing arm 5, the ejector rod 8 is hinged on a sliding block 9, the push rod is hinged with the ejector rod, the push rod is connected with the cylinder in a transmission mode or the ejector rod is connected with the cylinder in a transmission mode or the hinged point between the push rod and the ejector rod is connected with the cylinder in a transmission mode, and the push rod and the ejector rod are driven to move in a matching mode through the cylinder. In this embodiment, drive arrangement during operation, 12 drive lead screws of power supply, 11 transmission nuts of lead screw drive slider 9 and go up and down on offset printing unit's frame wallboard 3, the slider will drive the swing arm swing back and forth through ejector pin, push rod and cylinder cooperation, tentatively after targetting in place, the power supply stops driving the lead screw, the swing arm is withstood in the cylinder air supply pressurization, atmospheric pressure change through the cylinder is adjusted, can adjust the swing arm on the rendition cylinder keep with offset printing impression cylinder and offset printing plate cylinder crimping to the pressure of rolling. After a sliding block of the screw rod transmission device is locked on a frame wallboard 3 of the offset printing unit through the lifting of a screw rod and a screw nut, the beating and shaking of a transfer printing roller during printing can be avoided, and the phenomenon of ink sticks is avoided. The cylinder adopts double-stroke cylinder or double-cylinder, and the piston rod of cylinder is together articulated with push rod, ejector pin, and the cylinder swing setting on the cylinder block, and the cylinder adopts double-stroke cylinder or double-cylinder can carry out double-stroke work, can set up a little stroke in the double-stroke, can be carrying out the swing arm little stroke swing, with rendition cylinder and other two cylinders separately, overhaul or debug etc.. Double cylinders 25, 26 are used in the figure.
A plate cylinder replacing opening is formed in a frame wall plate 3 of the offset printing unit, a first end cover 17 is arranged on the plate cylinder replacing opening, and a bearing 18 matched with an offset printing plate shaft 16 is arranged in the first end cover 17; the frame wall 3 of the offset printing unit is provided with a transfer cylinder replacement opening 15, and the swing arm 5 is located at the side of the transfer cylinder replacement opening 15, which is the outer side in this embodiment, but may be provided at the inner side. The swing arm 5 is provided with a second end cover 27, the second end cover is arranged on an end cover mounting opening of the swing arm, a bearing 10 matched with the transfer printing shaft 21 is arranged in the second end cover 27, and a groove can be formed in the wallboard for the transfer printing shaft on the swing arm to move. Swing arms 5 and 24 are respectively arranged on the left side and the right side of a frame wallboard 3 of the offset printing unit in the embodiment, a plate cylinder replacing port and a transfer printing cylinder replacing port are both positioned on the frame wallboard 3 of the offset printing unit on the right side, and an end cover mounting port is arranged on the swing arm 5 on the right side and used for mounting a second end cover 27. Taking a swing arm as an example to explain the operation of changing the roller, when the roller is changed, the swing arm swings to the position of a changing port of the transfer printing roller, the second end cover on the right swing arm is detached and separated from the transfer printing shaft, the swing arm swings to leave the position of the changing port of the transfer printing roller after the separation is detached, the transfer printing roller on the transfer printing shaft can be changed, and after the change is finished, the swing arm swings to the position of the transfer printing shaft to assemble the second end cover to be matched with the transfer printing shaft again; in addition, the first end cover on the wallboard is opened, the offset plate cylinder is detached from the offset plate shaft from the plate cylinder replacement opening for replacement, and the first end cover is installed again after replacement.
Claims (7)
1. Printing unit who contains offset printing unit and flexo printing unit, including offset printing unit (A) and flexo printing unit (B), offset printing unit (A) sets up one at least, flexo printing unit (B) sets up one at least, offset printing unit (A) and flexo printing unit (B) series connection set up, flexo printing unit (B) includes flexographic plate cylinder (51), anilox roller (52) and flexo printing cylinder (53), flexographic plate cylinder (51) and anilox roller (52), flexo printing cylinder (53) cooperation printing, flexo plate cylinder sets up on the flexo plate axle, the flexo plate axle sets up on the frame wallboard of flexo printing unit lift, its characterized in that: the offset printing unit comprises an offset printing plate cylinder, a transfer printing cylinder and an offset printing impression cylinder, wherein the offset printing plate cylinder (1) is sleeved on an offset printing plate shaft (16), the transfer printing cylinder (4) is sleeved on a transfer printing shaft (21), the offset printing impression cylinder (2) is rotatably arranged on a frame wall plate (3) of the offset printing unit, the offset printing plate cylinder (1) is correspondingly matched with the transfer printing cylinder (4), the offset printing plate cylinder (1) and the transfer printing cylinder (4) keep pressure joint and roll alignment, the offset printing plate shaft (16) is rotatably arranged on the frame wall plate (3) of the offset printing unit, the transfer printing shaft (21) is rotatably arranged around the shaft axis, the position of the shaft axis of the transfer printing shaft (21) is adjusted on a transfer printing shaft running track (40), and when the transfer printing cylinders (4) with different specifications and external diameters are selected, the position of the shaft axis of the transfer printing shaft (21) on the transfer printing shaft running track (40) is adjusted, so that the transfer printing cylinders (4) with different specifications and external diameters keep pressure joint and roll alignment with the offset printing impression cylinder (2);
the offset plate cylinder (1) is correspondingly matched with the flexible plate cylinder (51);
the transfer shaft (21) is arranged on the swing arms (5, 24) to rotate;
swing arm (5, 24) are driven by drive arrangement and are gone up around swing arm axle (22) and carry out reciprocating swing on offset printing unit's frame wallboard (3), this drive arrangement is including push rod (6), ejector pin (8), cylinder transmission and screw drive, cylinder transmission is including the cylinder, screw drive is including lead screw (11), screw and slider (9), the screw sets up on slider (9), the lead screw is gone up and down on offset printing unit's frame wallboard (3) by power supply drive transmission screw drive slider (9), push rod (6) articulate on swing arm (5), ejector pin (8) articulate on slider (9), the push rod is articulated each other with the ejector pin, push rod or ejector pin still are connected with the cylinder transmission.
2. Printing unit comprising an offset printing unit and a flexographic printing unit according to claim 1, characterized in that: the transfer shaft running track (40) is an arc track, and three transfer cylinders (4) with different specifications and outer diameters (a, b and c) are selected optionally, the arc track corresponds to three axial line positions with the transfer shaft (21), and the transfer cylinders (4) at the three axial line positions are respectively kept in press-contact with the offset impression cylinder (2) and are in press-contact with each other.
3. A printing unit comprising an offset printing unit and a flexographic printing unit according to claim 2, characterized in that: the offset impression cylinder (2) is set in an adjusting manner in terms of its radial position on a frame wall (3) of the offset printing unit.
4. A printing unit comprising an offset printing unit and a flexographic printing unit according to claim 2, characterized in that: the swing arms (5, 24) swing to form an arc track of the transfer shaft running track (40) and adjust the position of the shaft axis of the transfer shaft (21) on the arc track.
5. Printing unit comprising an offset printing unit and a flexo printing unit according to claim 4, wherein: the radial position of the pivot arm shaft (22) on the frame wall (3) of the offset printing unit is set.
6. Printing unit comprising an offset printing unit and a flexographic printing unit according to claim 4, characterized in that: the cylinder adopts a double-stroke cylinder or a double-cylinder, a piston rod of the cylinder is hinged with the push rod and the ejector rod, and the cylinder is arranged on a cylinder seat in a swinging way; a frame wallboard (3) of the offset printing unit is provided with a plate cylinder replacing opening, a first end cover (17) is arranged on the plate cylinder replacing opening, and a bearing (18) is arranged in the first end cover (17) and matched with an offset printing plate shaft (16); be equipped with the transfer printing cylinder on offset printing unit's frame wallboard (3) and change the mouth, swing arm (5) are located the transfer printing cylinder and change mouth (15) lateral part, are equipped with second end cover (27) on swing arm (5), and second end cover (27) set up on the end cover installing port of swing arm (5), are equipped with the bearing in second end cover (27) and transfer printing axle (21) cooperation.
7. Printing unit comprising an offset printing unit and a flexographic printing unit according to claim 1, characterized in that: the printing unit is also connected in series with one or more of a hot stamping unit, a silk screen unit, a code spraying unit, a glazing unit, a film covering unit, a die cutting unit, a slitting unit and a compounding unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710909332.5A CN107584861B (en) | 2017-09-29 | 2017-09-29 | Printing unit comprising offset printing unit and flexo printing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710909332.5A CN107584861B (en) | 2017-09-29 | 2017-09-29 | Printing unit comprising offset printing unit and flexo printing unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107584861A CN107584861A (en) | 2018-01-16 |
| CN107584861B true CN107584861B (en) | 2023-03-17 |
Family
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| CN201710909332.5A Active CN107584861B (en) | 2017-09-29 | 2017-09-29 | Printing unit comprising offset printing unit and flexo printing unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE9305552U1 (en) * | 1993-04-16 | 1993-06-03 | MAN Roland Druckmaschinen AG, 6050 Offenbach | Device for inline coating of printing materials in offset printing machines |
| DE4435986C2 (en) * | 1994-10-08 | 1997-04-24 | Heidelberger Druckmasch Ag | Device for starting and stopping a blanket cylinder of a rotary printing machine |
| US5598777A (en) * | 1995-10-02 | 1997-02-04 | Howard W. DeMoore | Retractable printing/coating unit operable on the plate and blanket cylinders |
| JP3048545B2 (en) * | 1997-09-05 | 2000-06-05 | シナノケンシ株式会社 | Offset printing equipment |
| DE59908515D1 (en) * | 1998-12-17 | 2004-03-18 | Koenig & Bauer Ag | Sheetfed |
| DE10004997A1 (en) * | 1999-03-19 | 2000-09-21 | Heidelberger Druckmasch Ag | Combined two inking systems printing of material |
| NL1013620C2 (en) * | 1999-11-19 | 2001-05-22 | Drent Holding B V | Device for interchangeably receiving and positioning the printing cylinders of an offset printing press. |
| DE502004009017D1 (en) * | 2003-07-11 | 2009-04-02 | Koenig & Bauer Ag | ROLLER ROTARY PRINTING PRESS |
| DE102008013315A1 (en) * | 2008-03-10 | 2009-09-17 | Gallus Druckmaschinen Gmbh | Printing unit and printing press |
| JP6061416B2 (en) * | 2010-12-14 | 2017-01-18 | 株式会社小森コーポレーション | Securities printing machine |
| DE102012022881A1 (en) * | 2012-11-23 | 2014-05-28 | Gallus Druckmaschinen Gmbh | Printing unit with damping elements |
| CN207291243U (en) * | 2017-09-29 | 2018-05-01 | 浙江炜冈机械有限公司 | Printing machine containing offset print unit and flexo unit |
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Address after: 325400 No.1 Farm No.4 Cropping Area, Pingyang County, Wenzhou City, Zhejiang Province Applicant after: Zhejiang Weigang Technology Co.,Ltd. Address before: 325400 No.1 Farm No.4 Cropping Area, Pingyang County, Wenzhou City, Zhejiang Province Applicant before: Zhejiang Weigang Machinery Co.,Ltd. Address after: 325400 No.1 Farm No.4 Cropping Area, Pingyang County, Wenzhou City, Zhejiang Province Applicant after: Zhejiang Weigang Machinery Co.,Ltd. Address before: 325400 No.1 Farm No.4 Cropping Area, Pingyang County, Wenzhou City, Zhejiang Province Applicant before: ZHEJIANG WEI GANG MACHINERY Co.,Ltd. |
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