CN2196022Y - Multi-function soft plate printing machine - Google Patents

Abstract

The utility model relates to a multi-function soft plate printing machine which is provided with three printing colour cells, a printing paper web, a slitting device, and a material collecting device. The utility model can print with two colors in right side and can print with single color in reverse side. Consequently, the utility model is especially suitable for newspaper printing in right side and reverse side and colour register in right side. The utility model is also suitable for other product printing in right side and reverse side. The utility model can also convert into registering with three colors in single side and printing other products in single side. The utility model can also slit paper material according to required different length. The multi-function soft plate printing machine is provided with an automatic tracking material collecting device which is not influenced by slitting change in length, so the utility model is suitable for printing packages with various printing specifications and size changes.

Description

Multi-function soft plate printing machine

The utility model relates to flexographic printing machinery, is particularly suitable for printing middle-size and small-size newspaper, various package and other product of specification size variation.

Rotary press of offset printing or rotary letterpress are adopted in the printing of the present large-scale newspaper of China mostly, owing to these equipment price costlinesses, power consumption height, operation require high reason, be not suitable for the printing of middle-size and small-size newspaper, and when adopting the single-colour offset press that middle-size and small-size newspaper printing generally uses, the positive and negative of the print newspapers that must change plate respectively and positive chromatography can not once be finished positive and negative and positive chromaticity printing.With regard to flexographic presses, described according to printing industry publishing house in August, 1993 front page " flexographic printing ", the employing of flexographic printing mode is started late in China, also mostly be main equipment from external introduction, structure function is single, unit rewinding mode is rewinding, does not cut into the device of individual and rewinding.

The utility model provides a kind of flexographic presses that can once finish positive double-colored reverse side single color printing, is used for the printing of middle-size and small-size newspaper; Behind functional mapping, energy single face three-colour printing other products; Can cut paper stock by printed matter length specification as requested, the rewinding part is not cut the influence of length variations yet, is fit to the various package of printing specification size variation.

The technical solution of the utility model is: the multifunction flexible printing machine adopts three flexographic printing colour cells, first and second print couple adopts stacked layout, and the second and the 3rd print couple is arranged in the both sides of same frame, when the impression cylinder direct geared of second print couple and the impression cylinder meshed transmission gear of the 3rd print couple, the impression cylinder switched in opposite of the impression cylinder of the 3rd print couple and first and second print couple, the another side of the 3rd print couple sheets of printed paper is realized positive double-colored reverse side single color printing; When the impression cylinder gear of second print couple passes through the impression cylinder gear of idler gear transmission the 3rd print couple, the impression cylinder of the 3rd print couple turns to identical with the impression cylinder of first and second print couple, the same one side of three print couple sheets of printed paper realizes single face three look chromatographys.The cutting part as requested cut length specification, the different sizes of transposing cut blade roller moments input gear, change the rotating speed of cutting blade roller and bottom knife roller, become different length to cut page; The collection chain is cut blade roller and bottom knife roller and is whenever turned around cut paper once by the moment output gear transmission of cutting on the blade roll shaft, just has one to sting the page that the sending and receiving of paper tooth are cut on the collection chain, and no matter the length of cutting changes; Cut the moment output gear driven high-speed feed rollers on the bed plate roll shaft, page sent into paper with the speed that is higher than the collection chain stung the paper tooth, when promptly elongated degree is cut from the motion tracking rewinding.

This machine is compared with the single-colour offset press that middle-size and small-size newspaper printing generally adopts, and its advantage is can once finish newspaper positive and negative and positive chromaticity printing and cut the reel paper stock, thereby the efficient height, adopts web printing, thereby fast speeds can be arranged; Compare with other flexographic presses, it can positive double-colored reverse side monochrome also can the single face three-colour printing, the length of with good grounds requirement cut into individual and do not cut that length variations influences from the motion tracking material collecting device.The characteristics of this machine are simple in structure, compact, thereby manufacturing cost is also low, and print speed printing speed is fast, the efficient height, and function is strong, processing ease.

Description of drawings:

Fig. 1 is positive double-colored reverse side single color printing schematic diagram

Fig. 2 is a single face three-colour printing schematic diagram

Fig. 3 cuts and the material collecting device schematic diagram

Fig. 4 is the left side kinematic scheme

Fig. 5 is the right side kinematic scheme

Dotted line is represented page motion circuit among the figure, and the arrow on roller or the gear is represented its rotation direction, and the each several part course of work and principle are described as follows:

One, positive double-colored reverse side single color printing of roll web and single face three-colour printing

Referring to Fig. 1.Rotating cam 26 makes traction rubber rollers 27 be harmonious with carry-over pinch rolls 25, paper roll 2 rotations are pushed down and spurred to the page that passes therebetween, and slow withdrawing roll 22 is enclosed within on the slide bar 24, and can slide up and down, tension or unclamp the spring 23 that is enclosed within on the slide bar 24, unexpected tension paper during with buffer starting.Friction pulley 1 gives paper spool certain brake force by gear 3, and when preventing that print speed printing speed from slowing down, paper roll 2 still rotates with former speed.Paper spool by regulating paper spool, makes paper roll 2 laterally move to the printing position of requirement to position adjustments wheel 4.

Rotation plate cylinder adjusting handle 6, bottom bracket 5 slides, and makes the plate cylinder 15 that is located in thereon press to impression cylinder 16, and can regulate pressure therebetween.Same principle, anilox roller adjusting handle 8 moves bracket 10, and anilox roller 13 is contacted with plate cylinder 15, and ink foundation roller adjusting handle 9 makes ink foundation roller 11 contact with anilox roller 13, after regulating with top, is locked on the frame by check lock lever 12.Ink foundation roller 11 parts are dipped in ink cartridge 7 and contain in the printing ink, by ink foundation roller 11 and 13 pairs of commentaries on classics of anilox roller, the printing ink that is attached on the ink foundation roller 11 is transferred on the anilox roller 13, anilox roller 13 is delivered to printing ink on the flexible printing plate that sticks on plate cylinder 15 surfaces again, when page passes plate cylinder 15 and impression cylinder 16, just the printing surface on the flexible printing plate is impressed on the page, this is first print couple.During page motion circuit by a dotted line, page is successively by second and third print couple, the content of printing second and third printing surface.

The axial adjusting handle 14 of plate cylinder is regulated the axial location of plate cylinder 15, the flexible printing plate that is pasted on plate cylinder 15 surfaces also moves axially thereupon, to reach the requirement of regulating page printing surface lateral attitude, second and third print couple also has same device to regulate, to realize horizontal chromatography.Between two adjacent print couple floating guiding roller 18 is arranged, can be up and down or move left and right, regulate the page length distance between adjacent colour cell, to realize vertical chromatography.

As can be seen from Figure 1, wherein the 3rd print couple will be printed the page face different with first and second print couple, i.e. the reverse side of page, just positive double-colored reverse side single color printing.During print newspapers, just can once finish the printing of positive and negative and positive chromatography.

Referring to Fig. 2.Identical with aforementioned principles, page passes through first and second print couple successively, and content is printed onto the page front, during the impression cylinder 20 that institute's difference is the 3rd print couple and the rotation direction of plate cylinder 21 and aforementioned front double-colored reverse side single color printing opposite (change of rotation direction will be described in detail in transmission principle), as can be seen from Figure 2, the 3rd print couple also will be printed onto the page front, thereby realize the single face three-colour printing, be used to print the product that other is printed on one side.

Two, cut and rewinding

Referring to Fig. 3.Page is completed for printing and by promptly entering the stage of cutting behind the carry-over pinch rolls 25, cutting has the edge of a knife along its axial arranged blade 28 on the blade roller 41, have on the bottom knife roller 43 along its axial arranged rubber strip 42, when two rollers to changeing, when blade 28 snapped in the rubber strip 42, the page that just will pass therebetween cut off.The peripheral speed of high speed feed rollers 44 is higher than the paper injection speed of carry-over pinch rolls 25, and pressure roller 45 is pressed on the page that passes therebetween with certain pressure.When page did not cut off, page was with the motion of the paper injection speed of carry-over pinch rolls 25, and can not be with the peripheral speed motion of high speed feed rollers 44, and high speed feed rollers 44 tractive pages also have slip on the page surface; After page cut off, just with the peripheral speed motion of high speed feed rollers 44, page was delivered to the rewinding part on defeated paper plane 46.

Collection tooth (by stinging tooth 48 on the paper tooth, lower tooth 49, stinging paper tooth folding depression bar 47 and form) is installed on the collection chain 54, and the paper feed speed of high speed feed rollers 44 is higher than collection chain 54, guarantees that page can send on the collection tooth between the tooth 48 and lower tooth 49.Collection dental articulation paper feeding principle is similar to the common offset machine principle, does not repeat herein.

When sprocket wheel 29 rotates before the collection, drivening rod 30 swings back and forth fork 32, coaxial with it sprocket wheel 31 also comes back rotation with regard to contrary, clockwise direction, make sprocket wheel 51 and coaxial with it gear 50 is also contrary, clockwise direction comes back rotation by chain, gear 50 also just promotes tooth bar 52 back and forth, the neat cardboard 53 in back is seesawed, push away together stinging the page finished product 60 that the paper tooth puts down.Fork 32 pulling connecting rods 37 make 57 swings of paper side ordering plate wedge shape pushing block, promote paper side ordering plate 58 advance and retreat when the lozenges of its underpart is swung, and make page finished product 60 both sides stack sign indicating number together.During fork 32 swings, stir intermittently one-directional rotation of ratchet 33 at the ratchet 35 of one end, the angular wheel 34 coaxial with ratchet 33 rotates worm screw 38 by another angular wheel 36 that is engaged with, and then drive worm gear 40 clockwise directions rotate, sprocket wheel 39 also rotates in the same way, the paper collecting table 59 that is lifted on sprocket wheel 39 by chain just slowly descends along the vertically-guided groove on the both sides leg 55 by slide block 56 about the paper collecting table, to stack page finished product 60.The number of teeth control that the decrease speed of paper collecting table 59 is stirred ratchet 33 by ratchet 35 is to adapt to the paper of different-thickness.

Three, transmission principle and elongated degree cut, from the motion tracking rewinding

Referring to Fig. 4, Fig. 5, in conjunction with Fig. 1, Fig. 2, Fig. 3.Motor 71 is by belt transmission belt pulley 67, again by driving gear 66 directly or by gear 76,78 drive three print couple runnings, each plate cylinder 15 on each print couple, 17,21 radius adds flexible printing plate thickness (its thickness is setting) and goes up plate cylinder gear 64 with its axle respectively, 77,82 pitch radius equates, each ink foundation roller gear 62 on each print couple, 74,84, anilox roller gear 63,75,83 and impression cylinder gear 65,79,81 pitch radius equates with roller radius on it respectively, and by the mutually direct meshed gears of driving gear 66 transmissions, its peripheral speed (pitch circle linear velocity) is identical, the peripheral speed that also is each roller (plate cylinder refers to the printing surface of flexible printing plate) is identical, therefore do not have relatively between the contacted roller surface of each print couple and slide, do not have speed difference during each print couple sheets of printed paper.

As shown in Figure 4, turning to of impression cylinder gear 81, two impression cylinders 19,20 of the impression cylinder gear 79 of second print couple by gear 80 transmissions the 3rd print couple is identical, as shown in Figure 2, three print couple sheets of printed paper are realized the single face three-colour printing with one side.It is after 80s to pull down gear, the transmission of the 3rd print couple can be by the travelling gear 91 of frame opposite side, 92 finish, referring to Fig. 5, at this moment must load onto travelling gear 92, travelling gear 92 is coaxial with the impression cylinder 19 of second print couple, travelling gear 91 is coaxial with the impression cylinder 20 of the 3rd print couple, two travelling gears 91, during 92 direct engaged transmission, the impression cylinder 20 of the 3rd print couple turn to impression cylinder 19 switched in opposite with second print couple, as shown in Figure 1, the page face that the 3rd print couple printing is different with first and second print couple is realized positive double-colored reverse side single color printing.

Page carry-over pinch rolls gear 93 is the gears 95 by its upper spider opposite side same size of gear 68 transmissions, again by gear 94 transmissions, referring to Fig. 5, the radius of carry-over pinch rolls 25 equates with the pitch radius of carry-over pinch rolls gear 93, after the mutually direct engaged transmission of gear, the peripheral speed of carry-over pinch rolls gear 93 is identical with the roller gear of each print couple, so the peripheral speed of carry-over pinch rolls 25 is that the peripheral speed of paper injection speed and each plate cylinder 15,17,21 and impression cylinder 16,19,20 is that the print speed printing speed of page keeps synchronously.When cutting the diameter change of blade roller moment input gear 88, variable bit gear 90 can still keep and the engagement of cutting blade roller moment input gear 88 and carry-over pinch rolls gear 93 around carry-over pinch rolls gear 93 deflection certain angles.Cut the big or small identical and engaged transmission of blade roller gear 89 and bottom knife roller gear 96, keep synchronous rotational speed, whenever turn around, blade 28 snaps in the rubber strip 42 once, therefore also with regard to cut paper once.And when the diameter of cutting blade roller moment input gear 88 changed, its peripheral speed was constant, but rotating speed but will become thereupon.For example: machine rotational speed is constant, the diameter of cutting blade roller moment input gear 88 reduces half, its rotating speed doubles, the rotating speed of also promptly cutting blade roller 41 and bottom knife roller 43 doubles, be originally and turn around cut paper once, now take two turns, so twice of cut paper, the print speed printing speed of page is constant, thereby the length of institute's cut paper page or leaf is original half.Therefore, cut the size that blade roller moment is imported gear 88, just can change the length specification of institute's cut paper page or leaf by transposing.

Bottom knife roller moment output gear 70 is by change-speed gearing 72 driven high-speed feed rollers gears 73, cooperate by suitable gear ratio, high speed feed rollers 44 has than carry-over pinch rolls 25 and collection chain 54 fireballing paper feed speeds, and page just can be sent into the collection tooth that is installed on the collection chain 54.

Cut blade roller moment output gear 69 by the coaxial collection driven wheel 86 of the preceding sprocket wheel of gear 85 transmissions and collection 29.Therefore, regardless of cut paper length, as long as every cut paper once, cutting blade roller moment output gear 69 turns around, collection chain 54 is just walked one section fixing distance, this distance on the collection chain 54 every adjacent two sting the paper tooth (by stinging tooth 48 on the paper tooth, lower tooth 49, stinging paper tooth folding depression bar 47 forms) spacing, therefore, cut blade roller 41 and whenever turn around cut paper once with bottom knife roller 43, just there is one to sting the paper tooth and sting the paper sending and receiving, and no matter the length variations of institute's cut paper page or leaf, when just the cut paper length specification changes, stinging paper rewinding part still can sending and receiving, when promptly elongated degree is cut from the motion tracking rewinding.

Claims (1)

1. A kind of flexographic printing machinery, three print couple are arranged, printed web, cut and material collecting device, it is characterized in that second print couple and the 3rd print couple are arranged in the both sides of same frame, the impression cylinder gear of second print couple can be directly or the impression cylinder gear by idler gear transmission the 3rd print couple, and impression cylinder, plate cylinder, anilox roller and the ink foundation roller of the 3rd print couple can be rotated forward or backwards; Cutting blade roller moment input gear replaceable is the different gear of pitch diameter, the rotating speed of cutting blade roller and bottom knife roller is changed, cut the moment output gear transmission collection chain on the blade roll shaft, the moment output gear driven high-speed feed rollers on the bed plate roll shaft.

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