CN1168601C - Multi-colour offset printing method and its multi-colour offset printer - Google Patents
Multi-colour offset printing method and its multi-colour offset printer Download PDFInfo
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- CN1168601C CN1168601C CNB021150486A CN02115048A CN1168601C CN 1168601 C CN1168601 C CN 1168601C CN B021150486 A CNB021150486 A CN B021150486A CN 02115048 A CN02115048 A CN 02115048A CN 1168601 C CN1168601 C CN 1168601C
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Abstract
The present invention relates to a multi-colour offset printing method and a device thereof, which is mainly used for the color printing of webs. The method comprises the following steps that (a), picture areas of preset quantity are printed on a printing plate; each picture area is equidistantly arranged into a row and is corresponding to a single color; (b), inking devices of preset quantity ink printing ink of different colors in each picture area in a one-to-one correspondence mode; (c), a rubber cylinder seriatim contacts each picture area so as to transfer the printing ink to the rubber cylinder; the perimeter of the rubber cylinder is equal to the distance of two adjacent picture areas; each picture area is overlapped on the rubber cylinder; collecting the printing ink on the rubber cylinder so as to form a colour graph; (d), the rubber cylinder is pressed on a printing stock, and the printing ink of different colors are simultaneously transferred to the printing stock so as to obtain the required colour graph. The printing method has the advantages of reasonable technique and simple step. A printing machine using the printing method has low requirement on paper and small picture deviation.
Description
(1) technical field
The present invention relates to make ink image to be transferred on the blanket cylinder that is coating rubber from plate cylinder or other device that is coating forme, again transfer printing is transferred to offset printing method and device thereof on the stock (as paper) at the ink image on the above-mentioned rubber, more particularly, the present invention relates to a kind of multi-color blanket method and device thereof that is mainly used in cylinder material (as roll web) colored printing.
(2) background technology
The multi-color blanket method and the polychrome offset press of the multiple color of printing have been well-known on the printing material of package.For example, three cylinder group are box-like: a plate cylinder, a blanket cylinder and an impression cylinder are arranged, and roll web passes through between blanket cylinder and impression cylinder, and is every through a unit, can print of the same colourly, can print four looks as four units.This colored printing be with many units respectively with several different colours successively exactly cover be printed on the same width of cloth paper and finish.,, make paper extend or contraction, thereby cause registration deviation through in the process of each unit at paper because the variation of temperature, humidity and speed can cause the variation of paper tension.
Another kind of mode, satellite-type: blanket cylinder, a plurality of plate cylinder and an impression cylinder, plate cylinder equiphase difference be centered around blanket cylinder around, roll web passes through between blanket cylinder and impression cylinder.Because (space of arranging plate cylinder and inking device thereof) limit in the needs and the space of chromatography, the diameter of blanket cylinder must be greater than the diameter of plate cylinder.And for chromatography, must make circumferential distance that two plate cylinders are separated by on the blanket cylinder outer circumference surface equal the integral multiple of plate cylinder girth again, so formed several complete multicolor images that equal circumference distance (integral multiple of plate cylinder girth) distributes on blanket cylinder, this also will take the problem of paper with regard to the non-area of image that forme occurred.Desire is saved paper, must change the plate cylinder than minor diameter, and the plate cylinder of changing and lay in more different-diameter is pretty troublesome.Simultaneously, each plate cylinder need be done just can obtain the chromatography effect after machinery is adjusted, and the time is long, and error is big, and paper calcellation rate height has caused printing producer cost to increase.
Prior aries such as the making of the principle of offset printing, the principle of process printing, forme, inking device no longer describe in detail herein.
(3) summary of the invention
Main purpose of the present invention is to provide a kind of multi-color blanket method of chromatography more accurately and the multicolour offset press of implementing the method.
Another object of the present invention is to provide a kind of can be than existing offset press more the multi-color blanket method of paper-saving and the multicolour offset press of implementing the method.
Main purpose of the present invention is realized by following each technical scheme.
First technical scheme (about method):
A kind of multi-color blanket method may further comprise the steps:
(a) area of image of predetermined quantity (predetermined quantity is meant the quantity of the required monochrome of chromatography, and commonly used is four looks) is printed off in solarization on a forme, and described each area of image is an equidistant row, the corresponding a kind of monochrome of each area of image of being arranged on this forme;
(b) with the inking device of predetermined quantity one to one on each area of image with the printing ink of different colours;
(c) outer circumference surface of a blanket cylinder is contacted with each area of image on the forme seriatim, shift on above-mentioned blanket cylinder with printing ink variant color, the girth of above-mentioned blanket cylinder excircle equals the distance on the blanket cylinder rotating direction between adjacent two area of images, each area of image superposes on blanket cylinder, with above-mentioned printing ink the blanket cylinder upper set form one with area of image size complete coloured picture accordingly;
(d) above-mentioned blanket cylinder is pressed on the stock, the printing ink of above-mentioned variant color is transferred on the stock simultaneously to obtain the coloured picture that needs.
Contact in (c) step of technique scheme is a prior art, in fact is exactly that blanket cylinder rolls across from each area of image seriatim.When two cylinders rotated synchronously, if be object of reference with one of them cylinder, another was just in that its rolls relatively, and promptly one is rolled on another.When forme is plane, the distance between adjacent two area of images on the blanket cylinder rotating direction is exactly an air line distance; When forme is the disc shape, the distance between adjacent two area of images on the blanket cylinder rotating direction is exactly the distance of circumferencial direction.
Above-mentioned coloured picture can be a width of cloth figure, also can be several figure.That is to say that area of image itself can be made up of several identical or different images.
According to existing printing technology, we can know that the egative film output error that (plate-making) produced before the seal is what to be far smaller than in the error of reasons such as machine, paper, accent version and layout generation.And the technical program has only a forme, a blanket cylinder.Compared with prior art, a plurality of formes become a forme, the error of be certain to reduce layout, regulating the forme position; Paper only contacts with a blanket cylinder and once promptly finishes printing, and its transmission error has also reduced.So this multi-color blanket method is chromatography more accurately, and, in printing process, saved time of many adjustment formes and machine, improved operating efficiency.
The first above-mentioned technical scheme also can adopt following two kinds of technical measures to be further improved:
Described forme is located on the plate cylinder outer circumference surface, the quantity of described area of image is n, the outer circumference surface of plate cylinder is divided into n color section at least in a circumferential direction, the circumferential length of each color section equals the girth of blanket cylinder excircle, is distributed with an area of image respectively on each of n the color section that links to each other.(n is the quantity of the required monochrome of chromatography just, and quantity commonly used is 4; When n=4, n+1=5 color section generally will be set, many sections are convenient to install forme.Obviously, adopt n or n+2 or more a plurality ofly also be fine, only impracticable.)
Described forme is located at dull and stereotyped going up and is a plane.
Second technical scheme (enforcement of method):
A kind of multicolour offset press, comprise inking device, can be by the plate cylinder of inking device inking, can contact with plate cylinder and stock to be printed and with the blanket cylinder and the impression cylinder of printing ink transfer printing, the forme of described plate cylinder outer circumference surface is provided with n area of image of corresponding n kind different colours, each area of image is furnished with corresponding inking device for inking, the outer circumference surface of plate cylinder is divided into n color section at least in a circumferential direction, the circumferential length of each color section all equals the girth of blanket cylinder excircle, on each of n the color section that links to each other, be furnished with an area of image respectively, circumferential distance between the two adjacent area of images equals the girth of the excircle of blanket cylinder, described blanket cylinder is located on the conversion equipment and two kinds of operating positions is arranged, when a kind of operating position, blanket cylinder leans against on the plate cylinder and moves apart impression cylinder and contact each area of image, when another operating position, blanket cylinder leans against on the impression cylinder and moves apart plate cylinder and contacting printing material.(n is the quantity of the required monochrome of chromatography just, often equals 4; When n=4,5 color sections of operated by rotary motion are convenient to install forme with leaving space.The quantity of inking device is identical with area of image, is n=4)
When plate cylinder and blanket cylinder rotate synchronously, the outer circumference surface of blanket cylinder contacts one by one with area of image, because the girth of blanket cylinder equates with the circumferential length of the color section of plate cylinder, so it is every through a color section, blanket cylinder turns around, thereby each monochrome ink is one of blanket cylinder upper set formation and have only a complete coloured picture (coloured picture itself can comprise several patterns).
The second above-mentioned technical scheme also can adopt following two kinds of technical measures to be further improved:
Described n equals 4, and described plate cylinder is provided with 5 color sections.One of them color section is used for arranging lock version device.
Described impression cylinder is one to be journaled into the segment on the fuselage, its arc length equals the girth of blanket cylinder, this impression cylinder and a connecting rod one end are hinged, the connecting rod other end is hinged by bearing pin and a fork one end, the fork other end is hinged on the fuselage, go back pivot on the fuselage and adorn a sheave, bearing pin places in the groove of sheave and forms cam drive so that impression cylinder swings back and forth; Described conversion equipment comprises rocker, cam and the back-moving spring that is journaled on the fuselage, blanket cylinder is located on the rocker, back-moving spring is located between the driving shaft of fuselage and blanket cylinder, blanket cylinder relies on plate cylinder under the effect of back-moving spring, cam is also against blanket cylinder, and blanket cylinder relies on impression cylinder under the promotion of cam.
The operation principle of the technical program:
Input power rotates plate cylinder, the inking device that has a different colours printing ink with different colours for corresponding area of image, because plate cylinder and blanket cylinder are realized mechanical couplings by gear separately, blanket cylinder contacts with the rolling one by one of each area of image, the printing ink of variant color is shifted on above-mentioned blanket cylinder, above-mentioned printing ink the blanket cylinder upper set form one with area of image size complete coloured picture accordingly, at this moment, the switching mechanism action, make blanket cylinder leave plate cylinder and rely on impression cylinder, impression cylinder and blanket cylinder mechanical couplings, thus the printing ink of variant color is transferred on the stock simultaneously, finish one-step print; Then, switching mechanism is moved once more and is made blanket cylinder leave impression cylinder to rely on plate cylinder, replys original state, plate cylinder and blanket cylinder mechanical couplings, and subsequent printings is carried out in the preparation inking.Because have only a coloured picture on the blanket cylinder, so the each displacement of paper needs only and coloured picture is big or small corresponding, the clear area of blanket cylinder can not take paper.That is to say, blanket cylinder seal it can print any image (than its little getting final product) time, can not waste paper.This has just realized another object of the present invention.
The 3rd technical scheme (another enforcement of method):
A kind of multicolour offset press, comprise inking device, can by the forme of inking device inking with can contact with forme and stock to be printed and with the blanket cylinder of printing ink transfer printing, described forme is located at dull and stereotyped going up and is a plane, on this forme, be provided with disposed at equal distance become one row, corresponding n kind different colours, can be by n area of image of corresponding inking device inking, the air line distance between the two adjacent area of images equals the girth of blanket cylinder excircle; Also be provided with a guiding transmission device, contact with each area of image seriatim for the outer circumference surface of blanket cylinder; Also be provided with a bearing ink pad in the downstream of the rotating direction of blanket cylinder for placing the stock that contacts with blanket cylinder.(n is the quantity of the required monochrome of chromatography just, often equals 4)
The 3rd above-mentioned technical scheme also can adopt following two kinds of technical measures to be further improved:
Described guiding transmission device comprises two guide rails, two annular racks, two ring-shaped synchronous belts, an active synchronization belt wheel group and a driven synchronous pulley group; Guide rail and tooth bar are rack-mount, and are divided into two parts of both sides that are symmetrically distributed in forme and bearing ink pad respectively along the blanket cylinder rotating direction; The integral body of tooth bar is Long Circle, is to be made of two straightways that are parallel to each other and two semi-circular segments that are connected in two straightway two, and the tooth bar inboard is formed with a circle internal tooth; The position of forme is corresponding with the position of rack linear section; The two ends of blanket cylinder have the coaxial setting and the gear of unitary rotation with it respectively, two gears respectively with the tooth bar engagement, make the blanket cylinder can be across rolling in two tooth bar cocycles; The guide rail outside is that a circle is corresponding with tooth bar, shape is similar, integral body is oblong guide pass; The two axial ends of blanket cylinder also is arranged with respectively and is positioned at the gear slide outside, that cooperate with guide rail, and slide acts on also can be along its slippage on the guide pass, and under the supporting of slide, the gear of blanket cylinder meshes with tooth bar all the time; The radius of driving and driven synchronous pulley group is identical, two synchronous bands are on the belt wheel at driving and driven synchronous pulley group two ends and be engaged with, active synchronization belt wheel group and driven synchronous pulley group all are journaled on support or the guide rail, and coaxial with the semi-circular segments of tooth bar, so that the global shape of band becomes corresponding similar Long Circle with tooth bar synchronously; The two ends of blanket cylinder are fixed with synchronous band respectively, make blanket cylinder in the traction lower edge guide pass and the tooth bar motion of band synchronously.In addition, it can be provided with two blanket cylinders, and two blanket cylinders are installed on the position of the synchronous band of five equilibrium.
Described inking device is to be arranged to a parallel with it row one to one with area of image, described forme is by the conveying of a carriage, reach the inking position that contacts with inking device in the ink supply position that contacts with blanket cylinder and move around, this moving direction is vertical with the rotating direction of blanket cylinder.
The structure of carriage is a prior art, for example: guide rail and screw pair, forme and flat board are placed on the guide rail, servomotor orders about forme and dull and stereotyped slippage on guide rail by the transmission of screw pair.Here just carriage be not described in further detail.
The operation principle of the technical program:
Input power is to active synchronization belt wheel group, and under the traction of being with synchronously, first blanket cylinder travels forward.Since the engagement of wheel and rack, first blanket cylinder be rolling proal.First blanket cylinder is rolled into last area of image from first area of image, is stamped on the stock again, finishes one-step print.When first blanket cylinder leaves last area of image, the carriage action, the forme that is positioned at the ink supply position moves on to the inking position that contacts with inking device, and after the inking, forme comes back to the ink supply position.Through this time, first blanket cylinder turns around along tooth bar and guide rail, and the second impression is prepared to carry out in the position that another blanket cylinder also rolls nearly forme along tooth bar and guide rail.So circulation.Obviously, because stock (roll web) only just is in contact with one another when impressing with blanket cylinder, be not to be synchronized with the movement, so paper trend can be arbitrarily, both can with the direction of travel of blanket cylinder in the same way, also can be reverse, also can be vertical, this is with regard to the utilization of generous roll web.The more important thing is that the movable length of paper also is arbitrarily, this is because have only a coloured picture on the blanket cylinder, so the each displacement of paper needs only and coloured picture is big or small corresponding, the clear area of blanket cylinder can not take paper.That is to say, blanket cylinder seal it can print any image (than its little getting final product) time, can not waste paper.This has just realized another object of the present invention.
In addition, because roll web is intermittent movement in the course of the work, the plane cross cutting that this just can cooperate behind the seal has reduced cost.Because, if roll web all the time in slippage, must adopt rotating die cutting, and the cutter of rotating die cutting is expensive a lot of than the cutter of plane cross cutting.As existing flexographic presses.
Above-mentioned multi-color blanket method and the application of multicolour offset press on the trade mark embellish and pressing.
Disclosed printing process of the present invention, technology is reasonable, step is simple, make full use of the high characteristics of plate-making precision, originally several monochrome images that were distributed on the different formes are formed on the forme, and once mounting, have saved the operation of follow-up many low precision, and changed the mode that the blanket cylinder periphery of using always in the past is equal to or greater than the forme face, obtain obvious effects.The press structure of implementing this method is simple, and is easy to operate, to the user require low; Both but the printed volume coil paper can print sheet-fed again, both can print from length direction, can print from width again, the utilization rate height of paper, to paper require low; The image deviation that prints is little, and color is clear, and percent defective is low, greatly reduces user's printing cost, is very suitable for the trade mark embellish and pressing.
(4) description of drawings
Fig. 1 is the structural representation of embodiments of the invention 1;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the structural representation of embodiments of the invention 2;
Fig. 4 is the A-A cutaway view of Fig. 3;
Fig. 5 is the vertical view of Fig. 3;
Fig. 6 is another duty of embodiment 2.
(5) specific embodiment
The present invention is further detailed explanation below in conjunction with drawings and Examples.
Embodiment 1:
A kind of multicolour offset press that is used for four-color process, comprise inking device 1, can be by the plate cylinder 3 of inking device inking, can contact with plate cylinder 3 and roll web 4 to be printed and with the blanket cylinder 5 and the impression cylinder 6 of printing ink transfer printing, the forme of described plate cylinder outer circumference surface is provided with four area of images of corresponding four kinds of different colours, each area of image is furnished with corresponding inking device for inking, the outer circumference surface of plate cylinder 3 is divided into five color sections in a circumferential direction, the circumferential length of each color section all equals the girth of blanket cylinder 5 excircles, the diameter that is to say plate cylinder is five times of blanket cylinder, be furnished with an area of image on each of four color sections therein respectively, a remaining color section is provided with lock version device 7, circumferential distance between the two adjacent area of images equals the girth of the excircle of blanket cylinder 5, described blanket cylinder 5 is located on the conversion equipment and two kinds of operating positions is arranged, when a kind of operating position, blanket cylinder 5 leans against on the plate cylinder 3 and moves apart impression cylinder 6 and contact each area of image, when another operating position, blanket cylinder 5 leans against on the impression cylinder 6 and moves apart plate cylinder 3 and contact roll web 4.Described impression cylinder 6 is one to be journaled into the segment on the fuselage 8, its arc length equals the girth of blanket cylinder 5, this impression cylinder 6 and a connecting rod 9 one ends are hinged, connecting rod 9 other ends are hinged by bearing pin 10 and a fork 11 1 ends, fork 11 other ends are hinged on the fuselage 8, go back pivot on the fuselage 8 and adorn a sheave 12, bearing pin 10 places in the groove of sheave 12 and forms cam drive so that impression cylinder swings back and forth; Described conversion equipment comprises rocker 13, cam 14 and the back-moving spring 15 that is journaled on the fuselage, blanket cylinder 5 is located on the rocker 13, back-moving spring 15 is located between the driving shaft of fuselage 8 and blanket cylinder 5, blanket cylinder 5 relies on plate cylinder 3 under the effect of back-moving spring 15, cam 14 is also against blanket cylinder 5, and blanket cylinder 5 relies on impression cylinder 6 under the promotion of cam 14.
In practical operation, lock version device has accounted for the circumference (a color section) of 1/5 plate cylinder, and the length of forme is 4/5 of plate cylinder circumference, and forme is divided into four parts, and every part length is a color section, establish an area of image in every part, and the distance that makes adjacent area of image equals the long of a color section and becomes, like this, and when forme is contained on the plate cylinder, area of image just equidistantly distributes on plate cylinder, and this distance equals the girth of blanket cylinder.When blanket cylinder contact plate cylinder rolls, can carry out chromatography exactly.
Embodiment 2:
A kind of multicolour offset press that is used for four-color process, comprise inking device 1, can by the forme 21 of inking device inking with can contact with forme and roll web 4 to be printed and with the blanket cylinder 5 of printing ink transfer printing, described forme 21 is located at dull and stereotyped going up and is a plane, on this forme 21, be provided with disposed at equal distance become a row, corresponding four kinds of different colours, can be by four area of images 211,212,213,214 of corresponding inking device inking, the air line distance between the two adjacent area of images equals the girth of blanket cylinder 5 excircles; Also be provided with a guiding transmission device, contact with each area of image seriatim for the outer circumference surface of blanket cylinder; Also be provided with a bearing ink pad 31 in the downstream of the rotating direction of blanket cylinder 5 for placing the roll web 4 that contacts with blanket cylinder 5.
Described guiding transmission device comprises two guide rails 22, two annular racks 23, two ring-shaped synchronous belts 24, an active synchronization belt wheel group 25 and one driven synchronous pulley group 26; Guide rail 22 and tooth bar 23 are installed on the support 27, and are divided into two parts of both sides that are symmetrically distributed in forme 21 and bearing ink pad 31 respectively along blanket cylinder 5 rotating directions; The integral body of tooth bar 23 is Long Circle, is to be made of two straightways that are parallel to each other and two semi-circular segments that are connected in two straightway two, and tooth bar 23 inboards are formed with a circle internal tooth; The position of forme 21 is corresponding with the position of tooth bar 23 straightways; The two ends of blanket cylinder 5 have respectively coaxial setting and with it unitary rotation gear 17, two gears 17 respectively with tooth bar 23 engagement, make the blanket cylinder 5 can be across rolling in 23 cocycles of two tooth bars; Guide rail 22 outsides are that a circle is 23 corresponding with tooth bar, shape is similar, integral body is oblong guide pass; The two axial ends of blanket cylinder 5 also is arranged with respectively and is positioned at slide 28 gear 17 outsides, that cooperate with guide rail 22, and slide 28 acts on also can be along its slippage on the guide pass, and under the supporting of slide 28, the gear 17 of blanket cylinder 5 meshes with tooth bar 23 all the time; The radius of driving and driven synchronous pulley group 25,26 is identical, two are looped around on the belt wheel at driving and driven synchronous pulley group 25,26 two ends with 24 synchronously and are engaged with, active synchronization belt wheel group 25 and driven synchronous pulley group 26 all are journaled on the guide rail 22, and coaxial, so that become and tooth bar 23 corresponding similar Long Circles with 24 global shape synchronously with the semi-circular segments of tooth bar 23; The two ends of blanket cylinder 5 respectively be with 24 fixingly synchronously by screw 29, make blanket cylinder 5 synchronously with 24 traction lower edge guide pass and tooth bar 23 motions.Be provided with 5, two blanket cylinders 5 of two blanket cylinders altogether and be installed in five equilibrium synchronously with on 24 the position.
Described inking device 1 is to be arranged to a parallel with it row one to one with area of image, described forme 21 is by the conveying of a carriage 30, reach the inking position that contacts with inking device 1 in the ink supply position that contacts with blanket cylinder 5 and move around, this moving direction is vertical with the rotating direction of blanket cylinder 5.Carriage 30 as shown in Figure 3 is the conveyer belts that can move around.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (10)
1, a kind of multi-color blanket method is characterized in that may further comprise the steps:
(a) shine the area of image that prints off predetermined quantity on a forme, described each area of image is an equidistant row, the corresponding a kind of monochrome of each area of image of being arranged on this forme;
(b) with the inking device of predetermined quantity one to one on each area of image with the printing ink of different colours;
(c) outer circumference surface of a blanket cylinder is contacted with each area of image on the forme seriatim, shift on above-mentioned blanket cylinder with printing ink variant color, the girth of above-mentioned blanket cylinder excircle equals the distance on the blanket cylinder rotating direction between adjacent two area of images, each area of image superposes on blanket cylinder, with above-mentioned printing ink the blanket cylinder upper set form one with area of image size complete coloured picture accordingly;
(d) above-mentioned blanket cylinder is pressed on the stock, the printing ink of above-mentioned variant color is transferred on the stock simultaneously to obtain the coloured picture that needs.
2, multi-color blanket method according to claim 1, n is the quantity of the required monochrome of chromatography, it is characterized in that: described forme is located on the plate cylinder outer circumference surface, the quantity of described area of image is n, the outer circumference surface of plate cylinder is divided into n color section at least in a circumferential direction, the circumferential length of each color section equals the girth of blanket cylinder excircle, all is distributed with an area of image on each of n the color section that links to each other.
3, multi-color blanket method according to claim 1 is characterized in that: described forme is located at dull and stereotyped going up and is a plane.
4, a kind of multicolour offset press, comprise inking device, can be by the plate cylinder of inking device inking, can contact with plate cylinder and stock to be printed and with the blanket cylinder and the impression cylinder of printing ink transfer printing, n is the quantity of the required monochrome of chromatography, it is characterized in that: the forme of described plate cylinder outer circumference surface is provided with n area of image of corresponding n kind different colours, each area of image is furnished with corresponding inking device for inking, the outer circumference surface of plate cylinder is divided into n color section at least in a circumferential direction, the circumferential length of each color section all equals the girth of blanket cylinder excircle, on each of n the color section that links to each other, be furnished with an area of image respectively, circumferential distance between the two adjacent area of images equals the girth of the excircle of blanket cylinder, described blanket cylinder is located on the conversion equipment and two kinds of operating positions is arranged, when a kind of operating position, blanket cylinder leans against on the plate cylinder and moves apart impression cylinder and contact each area of image, when another operating position, blanket cylinder leans against on the impression cylinder and moves apart plate cylinder and contacting printing material.
5, multicolour offset press according to claim 4 is characterized in that: described n equals 4, and described plate cylinder is provided with 5 color sections.
6, multicolour offset press according to claim 4 is characterized in that:
Described impression cylinder is one to be journaled into the segment on the fuselage, its arc length equals the girth of blanket cylinder, this impression cylinder and a connecting rod one end are hinged, the connecting rod other end is hinged by bearing pin and a fork one end, the fork other end is hinged on the fuselage, go back pivot on the fuselage and adorn a sheave, bearing pin places in the groove of sheave and forms cam drive so that impression cylinder swings back and forth;
Described conversion equipment comprises rocker, cam and the back-moving spring that is journaled on the fuselage, blanket cylinder is located on the rocker, back-moving spring is located between the driving shaft of fuselage and blanket cylinder, blanket cylinder relies on plate cylinder under the effect of back-moving spring, cam is also against blanket cylinder, and blanket cylinder relies on impression cylinder under the promotion of cam.
7, a kind of multicolour offset press, comprise inking device, can by the forme of inking device inking with can contact with forme and stock to be printed and with the blanket cylinder of printing ink transfer printing, n is the quantity of the required monochrome of chromatography, it is characterized in that: described forme is located at dull and stereotyped going up and is a plane, this forme be provided with disposed at equal distance become one row, corresponding n kind different colours, can be by n area of image of corresponding inking device inking, the air line distance between the two adjacent area of images equals the girth of the excircle of blanket cylinder; Also be provided with a guiding transmission device, contact with each area of image seriatim for the outer circumference surface of blanket cylinder; Also be provided with a bearing ink pad in the downstream of the rotating direction of blanket cylinder for placing the stock that contacts with blanket cylinder.
8, multicolour offset press according to claim 7 is characterized in that: described guiding transmission device comprises two guide rails, two annular racks, two ring-shaped synchronous belts, an active synchronization belt wheel group and a driven synchronous pulley group; Guide rail and tooth bar are rack-mount, and are divided into two parts of both sides that are symmetrically distributed in forme and bearing ink pad respectively along the blanket cylinder rotating direction; The integral body of tooth bar is Long Circle, is to be made of two straightways that are parallel to each other and two semi-circular segments that are connected in two straightway two, and the tooth bar inboard is formed with a circle internal tooth; The position of forme is corresponding with the position of rack linear section, contacts with blanket cylinder treating; The two ends of blanket cylinder have the coaxial setting and the gear of unitary rotation with it respectively, two gears respectively with the tooth bar engagement, make the blanket cylinder can be across rolling in two tooth bar cocycles; The guide rail outside is that shape is similar and integral body is oblong guide pass with tooth bar is corresponding for a circle; The two axial ends of blanket cylinder also is arranged with respectively and is positioned at the gear slide outside, that cooperate with guide rail, and slide acts on also can be along its slippage on the guide pass, and under the supporting of slide, the gear of blanket cylinder meshes with tooth bar all the time; Active synchronization belt wheel group is identical with the radius of driven synchronous pulley group, the two is journaled on support or the guide rail, and it is coaxial with the semi-circular segments of tooth bar, two synchronous bands on driving and driven synchronous pulley group and with the engagement of the belt wheel at its two ends, the global shape of band is corresponding similar with the tooth bar global shape synchronously, is Long Circle; The two ends of blanket cylinder are fixed with synchronous band respectively, make blanket cylinder in the traction lower edge guide pass and the tooth bar motion of band synchronously.
9, multicolour offset press according to claim 8 is characterized in that: it is provided with two blanket cylinders, and two blanket cylinders are positioned on the position of the synchronous band of five equilibrium.
10, multicolour offset press according to claim 7, it is characterized in that: described inking device is to arrange one to one with area of image, an and formation row parallel with area of image, described forme is by the conveying of a carriage, reach the inking position that contacts with inking device in the ink supply position that contacts with blanket cylinder and move around, this moving direction is vertical with the rotating direction of blanket cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021150486A CN1168601C (en) | 2002-04-05 | 2002-04-05 | Multi-colour offset printing method and its multi-colour offset printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021150486A CN1168601C (en) | 2002-04-05 | 2002-04-05 | Multi-colour offset printing method and its multi-colour offset printer |
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| Publication Number | Publication Date |
|---|---|
| CN1373041A CN1373041A (en) | 2002-10-09 |
| CN1168601C true CN1168601C (en) | 2004-09-29 |
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| CNB021150486A Expired - Fee Related CN1168601C (en) | 2002-04-05 | 2002-04-05 | Multi-colour offset printing method and its multi-colour offset printer |
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|---|---|---|---|---|
| CN108501525B (en) * | 2018-03-30 | 2019-08-27 | 重庆川之舟印务设计有限公司 | A kind of printing equipment |
| CN112406280B (en) * | 2020-11-11 | 2022-07-19 | 浙江理工大学绍兴柯桥研究院有限公司 | Garment production is with accurate stamp mistake proofing equipment |
-
2002
- 2002-04-05 CN CNB021150486A patent/CN1168601C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1373041A (en) | 2002-10-09 |
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