CN203110491U

CN203110491U - Paper material conveying device of multicolor printing machine

Info

Publication number: CN203110491U
Application number: CN2013200416925U
Authority: CN
Inventors: 曹杨
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-01-25
Filing date: 2013-01-25
Publication date: 2013-08-07
Anticipated expiration: 2023-01-25

Abstract

The utility model discloses a paper material conveying device of a multicolor printing machine and relates to the technical field of printing machinery. The paper material conveying device of the multicolor printing machine comprises an unwinding unit, wherein the unwinding unit comprises an unwinding roller and an unwinding belt, the unwinding roller is arranged on an unwinding rack, the unwinding belt is arranged on one side of the unwinding roller and is connected with and driven by an unwinding driving device, the paper material tensioning device is arranged on a paper material conveying out channel and comprises a plurality of fixed guiding rollers and a floating roller installed on an oscillating rod connected with a tensioning spring. The unwinding driving device is provided with a motor controlled by a variable-frequency governor, a sensor is connected at the input end of the variable-frequency governor, and the sensor is used for detecting the rotating position of the oscillating rod. Two pressing rollers are arranged at the down stream position of the paper material tensioning device and on the paper material conveying out channel, and the two pressing rollers are mutually connected in a pressing mode. An atomization humidifier is arranged on the paper material conveying out channel and located on the upper stream of the two pressing rollers. One of the two pressing rollers is connected with the output shaft of the variable-frequency governor. The paper material conveying device of the multicolor printing machine ensures the constancy, stability and precision of tensioning force in a paper tape conveying process.

Description

The paper wood conveying device of multicolour press

Technical field

The utility model relates to the printing machinery technical field, the paper tape conveying device of the low fixation multilayer web press of especially a kind of softly.

Background technology

In order to realize web printing work, necessary maintenance is smooth before entering printing equipment, level of tightness is moderate, keep certain paper feed tension force for paper tape, and the tension force of paper tape need be invariable and big or small suitable in printing process.When web tension was excessive, printing net-point can produce certain deformation, and paper tape is vertically crumpling even take place transverse breakage, when web tension is too small, can cause that trace is fuzzy, register trouble, transversal fold; When web tension is unstable, also can cause printing troubles such as register trouble, ghost image, vertical gauffer.The accuracy of control tension force just can guarantee the constant and stationarity of paper tape tension force in conveying, and for soft, easy stretching, multilayer, low quantitative base material, the more difficult multicolor overprint of finishing exactly.This situation generally needs compacting, otherwise can cause the paper tape waste, influences machine run efficient.The paper feed stretching process of prior art is to unreel part by being installed in, the printing of a plurality of unit, the driving of many rollers to synchronous rotation of rolling part is finished, in these deflector rolls, the just carrying in the running of paper tape of a lot of deflector rolls is arranged, guiding and flattening effect, these deflector rolls in printing element are the not driven roll of drive, be with when being moved by paper tape and rotating, deflector roll work does not influence the variation of paper tape STRESS VARIATION or length, can not guarantee that paper tape is at the tension stability of print zone, therefore, can cause paper tape between each printing element on the print zone, telescopic variation to take place, cause register trouble true, ghost image, printing troubles such as vertical gauffer influence the quality of production.

The utility model content

Technical problem to be solved in the utility model provides a kind of paper wood conveying device of multicolour press, and that the paper wood conveying device of this multicolour press mainly solves is soft, the paper wood length in printing process that easily stretches is unstable and influence the problem of printing quality.

In order to address the above problem, the technical solution adopted in the utility model is: the paper wood conveying device of this multicolour press, include and unreel the unit, this unreels the unit has and is contained in the let off roll that unreels on the frame and is located at described let off roll one side and is connected the belt that unreels that drives by unreeling drive unit, is provided with by a plurality of fixing guide rollers and is contained in the paper wood tensioning apparatus that a dancer on the swing arm that is connected with tension spring constitutes in the described paper wood output channel that unreels the unit; The described drive unit that unreels has one by the motor of variable-frequency governor control, and the input of described variable-frequency governor is connected to a sensor that detects described swing arm turned position; The described paper wood that unreels behind the unit is carried two compression rolls that mutual crimping is housed on the paper wood transfer passage in downstream; Be provided with atomizing humidifier at the described paper wood transfer passage that unreels between unit and described two compression rolls; There is a compression roll to be connected with the output shaft of a speed regulator in the middle of described two compression rolls.

In the paper wood conveying device technical scheme of above-mentioned multicolour press, technical scheme can also be more specifically: described tension spring is connected with a tension spring adjusting device of regulating this tension spring tensioning degree; Described tension spring adjusting device has a pulley that mounts spring, and the mounting bracket of this pulley is contained in by adjusting screw(rod) and describedly unreels frame or unreel on the parts that frame fixedlys connected with described; Described tension spring is on described pulley.

Further: the described unit that unreels has a plurality ofly, and described atomizing humidifier and described each two compression roll that unreel the unit are located in each described section of converging that unreels unit paper wood transfer passage.

Further: have a compression roll to be contained on the roller frames of an activity in the middle of described two compression rolls, described roller frames is contained in by guide post in the hole of roller frames bearing, between described roller frames and described roller frames bearing holddown spring is housed.

Owing to adopted technique scheme, the utility model compared with prior art has following beneficial effect:

1, adopts dancer that paper wood paper feed tension force is carried out pre-stretch-draw, to the paper tape typing, eliminated paper tape owing to the vibration that the pulling force fluctuation produces, guarantee that the paper feed pulling force is constant, steady, controlled the accuracy of tension force effectively.

2, to carry out humidification before the paper tape pressurization, better guarantee paper tape pressurization typing effect.

3, paper tape pressurized treatments by two compression roll mutual extrusion, changes and has strengthened the adhesion that the paper wood fiber twines, and has improved the tightness of bonding force and paper tape between the ply of paper, reduces retractility, has improved planarization and the slickness on paper tape surface; Thereby improved the performance of undertaking the printing of, guaranteed printing quality, improved the product feel.

4, guaranteed that the preceding paper tape of printing has certain paper feed tension force, cooperated the regulation and control of printing zone tension force, guaranteed the tension stability of printing machine in the printing element interval, finally finished the tension force control of sheet transfer system.

Description of drawings

Fig. 1 is the paper wood transport conveyor constructions schematic diagram of multicolour press.

Fig. 2 is A-A cutaway view of Fig. 1.

Fig. 3 is that the K of Fig. 1 is to view.

Fig. 4 is the vertical view of Fig. 3.

Fig. 5 is that 4 of the employed paper wood conveying device of method for multicolor printing unreel cell schematics.

The specific embodiment

The utility model is described in further detail below in conjunction with accompanying drawing embodiment:

As the paper wood conveying device of Fig. 1, multicolour press shown in Figure 5, be used for before the printing paper wood being carried out the stretch-draw compacting, it comprises 4 identical unit B, C, D, E, atomizing humidifier 6 and compression rolls 4,5 of unreeling; Each unreels the unit and comprises unwinding device, the paper wood tensioning apparatus, deviation correcting device, unwinding device such as Fig. 1, as shown in Figure 2, include be contained in the let off roll 18 that unreels on the frame 30 be located at let off roll 18 1 sides by unreel drive unit be connected drive unreel belt 15, unreel drive unit and have one by the motor 11 of variable-frequency governor 19 controls, motor 11 is fixed in and unreels on the frame 30, the output shaft of motor 11 is connected with driving wheel 36, driving wheel 36 is by being with 35 to be connected with synchronous pulley 34 synchronously, the wheel shaft of synchronous pulley 34 and driving shaft 33 sockets, be hinged with defeated paper frame 14 on the driving shaft 33, defeated paper frame 14 two ends are respectively equipped with two

cydariform belt pulleys

31,32, driving shaft 33 connects cydariform belt pulley 32, cydariform belt pulley 32 is connected by unreeling belt 15 with cydariform belt pulley 31, unreels and drives paper feed when belt 15 moves; Defeated paper frame 14 lower ends are connected with cylinder 17, put in order unreeling the pressure that belt 15 is applied to paper wood 16 surfaces by the adjustable size of regulating cylinder 17 air pressure.As shown in Figure 1, be provided with a plurality of guide rollers that form the paper wood output channel unreeling frame 30, fixing guide roller 21,23,24 and be contained in a dancer 22 on the swing arm 25 that is connected with tension spring 20 and constituted the paper wood tensioning apparatus, dancer 22 is arranged at an end of swing arm 25, the other end of swing arm 25 and sector gear 28 are affixed, and can be around the sector gear axle center 29 swings, the end that swing arm 25 is equipped with dancer 22 is connected with tension spring 20, tension spring 20 is connected with a tension spring adjusting device of regulating tensioning degree, the tension spring adjusting device has a pulley 12 that mounts tension spring 20, the mounting bracket of pulley 12 is contained in by adjusting screw(rod) 13 and unreels on the frame 30, and tension spring 20 is on pulley 12; When using printable fabric not simultaneously, rotatable adjusting screw(rod) 13 is regulated the pulling force of tension spring, adjusts the tension force of paper tape.When the paper tape pulling force changed, dancer 22 will move up and down, thereby absorbed vibration.In other embodiments, the mounting bracket of pulley 12 can by adjusting screw(rod) 13 be contained in unreel the parts that frame 30 fixedlys connected on.Sector gear 28 is connected with a joggle with pinion 27 on the sensor 26 that is installed in wobble detection bar 25 turned positions, and sensor 26 outputs are connected on the input of the variable-frequency governor 19 of control motor speed; In the paper tape course of conveying, during tension variation, dancer 22 is under the acting in conjunction of tension spring 20, drive swing arm 25 29 swings around the sector gear axle center, drive pinion 27 and rotate a position, be transported to variable-frequency governor 19 for simultaneously 26 1 signals of sensor, this signal and drive motor 11 rotations, thereby the change chart drive speed is realized pre-stretch-draw control.After pre-stretch-draw, paper tape enters deviation correcting device after walking around guide roller 24, this deviation correcting device has a correction frame 10 that can rotate around back shaft, when skew takes place in paper tape, photoelectric sensor 7 produces and outputs signal to deviation correcting device 8, and control Linear actuator 9 drive correction framves 10 rotate to the paper tape edge and get back to initial position.4 paper tape outputs respectively after correction that unreel unit B, C, D, E, the paper tape of output converges stack.Be positioned at two compression rolls 4 on the paper wood output channel, 5 upstream is provided with atomizing humidifier 6, and the paper tape after the stretch-draw stack is carried out humidification, the moisture content behind the paper wood humidification is 5%～7%.Paper tape after a pair of compression roll 4 on the paper wood output channel as shown in Figure 3 and Figure 4, the 5 mutual crimping stacks makes paper tape compound.Compression roll 4 is contained on the roller frames 43 of an activity, and roller frames 43 is contained in by guide post 1 in the hole of roller frames bearing 3, between roller frames 43 and roller frames bearing 3 holddown spring 2 is housed; Rotary steering bar 1 passes to roller frames 43 to power by holddown spring 2, finishes exerting pressure of compression roll 4,5 pairs of stack paper tapes, and the dynamics of compacting is counted 100,000 Ns/rice～120,000 Ns/rice with the width of paper wood; Compression roll 5 is affixed with synchronous pulley 37, synchronous pulley 37 is by being with 38 to be connected with synchronous pulley 40 synchronously, synchronous pulley 40 is fixedlyed connected with speed regulator 39 output shafts, the power shaft of speed regulator 39 is connected and keeps same rotating speed by shaft coupling 41 with printing machine driven roller 42, rotating speed by regulating speed regulator 39 output shafts and the speed discrepancy of printing machine driven roller 42 can be controlled the tensioning degree of the paper wood after compound to compacting.

Roll web is installed on the let off roll 18, wears paper along the paper wood output channel.Before paper wood stretch-draw, earlier this batch paper wood is carried out tensile strength test, measure the tension stress of this paper wood--the peaked tension force numerical value of increment of the corresponding tension force of unit extension amount is the stretch-draw referential data in the percentage elongation characteristic curve.Control cylinder 17 makes and unreels belt 15 and be close to the paper roll surface, unreels belt 15 and drives paper roll open under the driving of motor 11, realizes paper feed; Paper wood carries out pre-stretch-draw by the paper wood tensioning apparatus, and the pretensioned value of thrust of paper wood is not less than described stretch-draw referential data; Stretch-draw paper tape after deviation correcting device correction, converge stack, the paper tape after the stack carries out humidification through atomizing humidifier 6, again with humidification paper tape compound with compression roll 4,5 compactings; In order to cooperate the regulation and control of printing zone tension force, moment is delivered to compression roll 4,5 from printing machine driven roller 42, regulate speed regulator 39 and can change compression roll 4,5 rotating speed, compression roll 4,5 rotating speed and printing machine rolling draught line speed produce a differential like this, keep the stable of this differential just to keep printing machine at the tension stability in printing element interval; Simultaneously, change compression roll 4,5 rotating speed, 22 swing arms of sensing element dancer will move up and down, because sheet transfer system is a closed-loop system, this signal will feed back to the rotating speed of regulation and control motor 11 on the variable-frequency governor 19, influence the sheet transfer system tension variation, finally finish the tension force control of sheet transfer system.Paper wood enters printing zone from compression roll 4,5 outputs, and printing element prints the paper wood of tension stability, and its chromatography is accurate, the printing quality height.

Claims

1. the paper wood conveying device of a multicolour press, include and unreel the unit, this unreel the unit have be contained in the let off roll (18) that unreels on the frame (30) be located at described let off roll (18) one sides by unreel drive unit be connected drive unreel belt (15), it is characterized in that: be provided with by a plurality of fixing guide rollers (21,23,24) and be contained in the paper wood tensioning apparatus of dancer (a 22) formation on the swing arm (25) that is connected with tension spring (20) in the described paper wood output channel that unreels the unit; The described drive unit that unreels has one by the motor (11) of variable-frequency governor (19) control, and the input of described variable-frequency governor (19) is connected to a sensor (26) that detects described swing arm (25) turned position; The described paper wood that unreels behind the unit is carried two compression rolls (4,5) that mutual crimping is housed on the paper wood transfer passage in downstream; Be provided with atomizing humidifier (6) at the described paper wood transfer passage that unreels between unit and described two compression rolls (4,5); There is a compression roll (5) to be connected with the output shaft of a speed regulator (39) in the middle of described two compression rolls (4,5).

2. the paper wood conveying device of multicolour press as claimed in claim 1 is characterized in that: described tension spring (20) is connected with a tension spring adjusting device of regulating this tension spring (20) tensioning degree; Described tension spring adjusting device has a pulley (12) that mounts spring, and the mounting bracket of this pulley (12) is contained in by adjusting screw(rod) (13) and describedly unreels frame (30) or unreel on the parts that frame (30) fixedlys connected with described; Described tension spring (20) is on described pulley (12).

3. the paper wood conveying device of multicolour press as claimed in claim 1 or 2, it is characterized in that: the described unit that unreels has a plurality ofly, and described atomizing humidifier (6) and described each two compression roll (4,5) that unreel the unit are located in each described section of converging that unreels unit paper wood transfer passage.

4. the paper wood conveying device of multicolour press as claimed in claim 1 or 2, it is characterized in that: have a compression roll (4) to be contained on the roller frames (43) of an activity in the middle of described two compression rolls (4,5), described roller frames (43) is contained in the hole of roller frames bearing (3) by guide post (1), between described roller frames (43) and described roller frames bearing (3) holddown spring (2) is housed.

5. the paper wood conveying device of multicolour press as claimed in claim 3, it is characterized in that: have a compression roll (4) to be contained on the roller frames (43) of an activity in the middle of described two compression rolls (4,5), described roller frames (43) is contained in the hole of roller frames bearing (3) by guide post (1), between described roller frames (43) and described roller frames bearing (3) holddown spring (2) is housed.