CN103057291A - Soft low-quantitative printing method for multiple layers of paper - Google Patents
Soft low-quantitative printing method for multiple layers of paper Download PDFInfo
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- CN103057291A CN103057291A CN2013100293262A CN201310029326A CN103057291A CN 103057291 A CN103057291 A CN 103057291A CN 2013100293262 A CN2013100293262 A CN 2013100293262A CN 201310029326 A CN201310029326 A CN 201310029326A CN 103057291 A CN103057291 A CN 103057291A
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Abstract
The invention discloses a soft low-quantitative printing method for multiple layers of paper, relating to the technical field of printing machinery. The soft low-quantitative printing method comprises the steps of: pre-tensioning paper wood needing to be printed before printing, wetting the pre-tensioned paper wood, then compacting the tensioned and wetted paper wood, and printing the compacted paper wood. Before the paper wood is tensioned, the batch of paper is subjected to tensile strength test to obtain the tension stress of the paper wood, wherein the unit extension in an elongation characteristic curve corresponds to the tension value of the maximum tension increment, which is a tension reference value; the tension value of pre-tensioning the paper wood is not less than the tension reference value; the force of compacting the paper wood is 100KN/M-120KN/M in the terms of the width of the paper wood; the water content after the paper wood is wetted is 5-7 percent; and the accuracy of the tension is effectively controlled to ensure that a paper tape does not cause flying and longitudinal creases, and thus the constancy and the stability of tension of the paper tape during conveying are ensured, the printing performance is improved, and the production efficiency and the production quality are improved.
Description
Technical field
The present invention relates to the printing machinery technical field, the softer quantitatively rolling paper wood lower, multilayer of especially a kind of quality carries out method for multicolor printing.
Background technology
In existing polychrome printing technology, the paper wood of rolling paper wood is tensioned to paper wood to a certain degree by guide roller and driven roller paper wood to be transported on the printing element of all kinds afterwards by unwinding device and prints.This printing process is for good toughness, and can there be the problem of multicolor overprint deviation in the paper wood that tensile strength is large.But, for the softer tightness of quality less than 0.3g/cm
3, be 10 g/m quantitatively
2～27g/m
2Rolling paper wood when carrying out polychrome printing because the tensile property of paper wood is poor, tension variation and fluctuation are very sensitive on the impact of paper wood elongation, in addition, the softer paper wood of this quality through the process color roller compaction after, its tensile property can change.Therefore, adopt the softer paper wood of existing method for multicolor printing printing quality, because different phase and tension force change to some extent and fluctuates in the printing process, and a plurality of look roller is to the compacting of paper wood, paper wood can deform, gauffer, trace fuzzy, register trouble, even transverse breakage.
Summary of the invention
Technical problem solved by the invention provides the low quantitative multi-layered paper printing process of a kind of softly, and the low quantitative multi-layered paper printing process of this softly not only can guarantee tension force constant, steady of paper tape, can also effectively control the accuracy of tension force.
In order to address the above problem, the technical solution used in the present invention is: this softly is hanged down quantitative multi-layered paper printing process, before the printing first the paper wood to the needs printing carry out pre-stretch-draw, then to stretch-draw paper wood carry out compacting, more tightly packed paper wood is printed.
In the low quantitative multi-layered paper printing process technical scheme of above-mentioned softly, technical scheme can also be more specifically: before described paper wood stretch-draw, first this batch paper wood being carried out tensile strength test, measures 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; The pretensioned value of thrust of described paper wood is not less than described stretch-draw referential data; Dynamics to described paper wood compacting is counted 100KN/M～120KN/M with the width of described paper wood.
Further: the paper wood after the described pre-stretch-draw is carried out humidification, again with humidification the paper wood compacting.
Further: the moisture content behind the described paper wood humidification is 5%～7%.
Owing to adopted technique scheme, the present invention compared with prior art has following beneficial effect:
1, finalizes the design for the first time for paper tape, eliminated paper tape owing to the vibration that the pulling force fluctuation produces, guarantee that the paper feed pulling force is constant, steady, effectively controlled the accuracy of tension force.Paper tape has certain paper feed tension force before having guaranteed printing, has cooperated the regulation and control of printing zone tension force, has guaranteed the tension stability of printing machine in the printing element interval, finally finishes the tension force control of sheet transfer system.
2, different base materials is carried out the prestressed stretch-draw typing, effectively control the accuracy of tension force, paper tape has not been produced wave and longitudinal wrinkles, do not broken, guaranteed the constant and stationarity of paper tape tension force in conveying, improve the performance of undertaking the printing of, enhance productivity and the quality of production.
3, to carry out humidification before the paper tape pressurization, better guarantee paper tape pressurization fixed effect.
Description of drawings
Fig. 1 is the structural representation of the low employed paper wood conveying device of quantitative multi-layered paper printing process of this softly.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is that the K of Fig. 1 is to view.
Fig. 4 is the top view of Fig. 3.
Fig. 5 is 4 unwinding unit schematic diagrames of the low employed paper wood conveying device of quantitative multi-layered paper printing process of this softly.
The specific embodiment
The low quantitative multi-layered paper printing process of this softly is first needs printing paper wood to be carried out pre-stretch-draw before printing, then to stretch-draw paper wood carry out humidification, again with humidification the paper wood compacting, more tightly packed paper wood is printed.
The invention will be further described below in conjunction with accompanying drawing embodiment:
Fig. 1, paper wood conveying device shown in Figure 5 mainly comprise 4 identical unwinding unit B, C, D, E, atomizing humidifier 6 and compression roll 4,5; Each unwinding unit 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 connected let off roll 18 1 sides by unreel drive unit connect 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 connected with synchronous pulley 34 by Timing Belt 35, 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, drives paper feed when unreeling belt 15 and moving; Defeated paper frame 14 lower ends are connected with cylinder 17, unreel the pressure that belt 15 is applied to paper wood 16 surfaces by the big or small capable of regulating of the air pressure of adjusting cylinders 17.As shown in Figure 1, be provided with a plurality of guide rollers that form the paper tape output channel unreeling frame, 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 consisted of 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 swing, 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 is fixedly connected with 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 drive motors 11 for simultaneously 26 1 signals of sensor, this signal and rotate, 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 occurs 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.The paper tape of 4 unwinding unit B, C, D, E is respectively output after correction, and 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.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; Compression roll 5 is affixed with synchronous pulley 37, synchronous pulley 37 is connected with synchronous pulley 40 by Timing Belt 38, synchronous pulley 40 is affixed 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.
Embodiment one: roll web is installed on the let off roll 18, wears paper along the paper wood output channel.Before paper wood stretch-draw, first to wide be 210mm, tightness is 0.224g/cm
3, be 15.7g/m quantitatively
2Paper wood carries out tensile strength test, press GB/T12914-2008 " mensuration of paper and cardboard Zhang Qiangdu " defined test method, measuring the tension stress of this paper wood with the tensile strength test instrument--the peaked tension force numerical value of increment of the corresponding tension force of unit extension amount is 28KN/M in the percentage elongation characteristic curve, and this is worth as the tension force reference value; The pretensioned value of thrust of paper tape is not less than this stretch-draw referential data, according to the tension force reference value, selects the tension spring 20 of D2 * D20, rotates 13 pairs of tension spring 20 pulling force of adjusting screw(rod) and finely tunes, and makes the pretensioned value of thrust of paper tape reach 30KN/M.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 tape carries out pre-stretch-draw by the paper wood tensioning apparatus; Stretch-draw paper tape after deviation correcting device correction, converge stack, paper tape after the stack carries out humidification through atomizing humidifier 6, moisture content behind the paper tape humidification is 7%, with humidification the stack paper tape with compression roll 4,5 compactings, compound to the compacting of multi-ply paper band, the dynamics of compacting is counted 100KN/M with the width of paper wood; 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, affect 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, and printing quality is high.
Embodiment two: roll web is installed on the let off roll 18, wears paper along the paper wood output channel.Before paper wood stretch-draw, first to wide be 250mm, tightness is 0.235g/cm
3, be 18.8 g/m quantitatively
2Paper wood carries out tensile strength test, press GB/T12914-2008 " mensuration of paper and cardboard Zhang Qiangdu " defined test method, measuring the tension stress of this paper wood with the tensile strength test instrument--the peaked tension force numerical value of increment of the corresponding tension force of unit extension amount is 31.36KN/M in the percentage elongation characteristic curve, and this is worth as the tension force reference value; The pretensioned value of thrust of paper tape is not less than this stretch-draw referential data, according to the tension force reference value, selects the tension spring 20 of D2 * D20, rotates 13 pairs of tension spring 20 pulling force of adjusting screw(rod) and finely tunes, and makes the pretensioned value of thrust of paper tape reach 35KN/M.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 tape carries out pre-stretch-draw by the paper wood tensioning apparatus; Stretch-draw paper tape after deviation correcting device correction, converge stack, paper tape after the stack carries out humidification through atomizing humidifier 6, moisture content behind the paper tape humidification is 6%, with humidification the stack paper tape with compression roll 4,5 compactings, compound to the compacting of multi-ply paper band, the dynamics of compacting is counted 110KN/M with the width of paper wood; 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, affect 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, and printing quality is high.
Embodiment three: roll web is installed on the let off roll 18, wears paper along the paper wood output channel.Before paper wood stretch-draw, wide to paper first is 400mm, and tightness is 0.25g/cm
3, be 20.4g/m quantitatively
2Paper wood carries out tensile strength test, press GB/T12914-2008 " mensuration of paper and cardboard Zhang Qiangdu " defined test method, measuring the tension stress of this paper wood with the tensile strength test instrument--the peaked tension force numerical value of increment of the corresponding tension force of unit extension amount is 36.75KN/M in the percentage elongation characteristic curve, and this is worth as the tension force reference value; The pretensioned value of thrust of paper tape is not less than this stretch-draw referential data, according to the tension force reference value, selects the tension spring 20 of D2 * D20, rotates 13 pairs of tension spring 20 pulling force of adjusting screw(rod) and finely tunes, and makes the pretensioned value of thrust of paper tape reach 40KN/M.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 tape carries out pre-stretch-draw by the paper wood tensioning apparatus; Stretch-draw paper tape after deviation correcting device correction, converge stack, paper tape after the stack carries out humidification through atomizing humidifier 6, moisture content behind the paper tape humidification is 5%, with humidification the stack paper tape with compression roll 4,5 compactings, compound to the compacting of multi-ply paper band, the dynamics of compacting is counted 120KN/M with the width of paper wood; 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, affect 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, and printing quality is high.
Claims (4)
1. the low quantitative multi-layered paper printing process of a softly is characterized in that: before the printing first the paper wood to the needs printing carry out pre-stretch-draw, then to stretch-draw paper wood carry out compacting, more tightly packed paper wood is printed.
2. the low quantitative multi-layered paper printing process of softly according to claim 1, it is characterized in that: before described paper wood stretch-draw, first this batch paper wood being carried out tensile strength test, measures 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; The pretensioned value of thrust of described paper wood is not less than described stretch-draw referential data; Dynamics to described paper wood compacting is counted 100KN/M～120KN/M with the width of described paper wood.
3. the low quantitative multi-layered paper printing process of softly according to claim 1 and 2 is characterized in that: the paper wood after the described pre-stretch-draw is carried out humidification, again with humidification the paper wood compacting.
4. the low quantitative multi-layered paper printing process of softly according to claim 3, it is characterized in that: the moisture content behind the described paper wood humidification is 5%～7%.
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| CN201310029326.2A CN103057291B (en) | 2013-01-25 | 2013-01-25 | The printing process of softly light basis weight multi-layered paper |
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| CN201310029326.2A CN103057291B (en) | 2013-01-25 | 2013-01-25 | The printing process of softly light basis weight multi-layered paper |
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| CN103057291B CN103057291B (en) | 2015-08-26 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201132413Y (en) * | 2007-12-30 | 2008-10-15 | 宁波欣达印刷机器有限公司 | Introducing and preprocessing device of printing machines for easy-to-draw coiling material |
| CN201598058U (en) * | 2009-12-31 | 2010-10-06 | 佛山市绿之彩印刷有限公司 | Novel paper cutter |
| CN102248766A (en) * | 2011-04-27 | 2011-11-23 | 苏州工业园区天势科技有限公司 | Wrinkle-proof device for printer |
| CN102259516A (en) * | 2010-05-28 | 2011-11-30 | 北京厚明德塑料彩印有限公司 | Thermal shrinkage film printing method and equipment, and printed thermal shrinkage film |
| CN202226422U (en) * | 2011-09-27 | 2012-05-23 | 瑞安市博业激光应用技术有限公司 | Paper pressing plate mechanism of printing press |
| US20120274694A1 (en) * | 2011-04-27 | 2012-11-01 | Joel Sherwood Lawther | Printing multi-channel image on web receiver |
| RU2011119147A (en) * | 2011-05-12 | 2012-11-20 | Виктор Иванович Макуха (RU) | COMPACT DEVICE FOR PRESSING PAPER OR PAPERBOARD |
-
2013
- 2013-01-25 CN CN201310029326.2A patent/CN103057291B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201132413Y (en) * | 2007-12-30 | 2008-10-15 | 宁波欣达印刷机器有限公司 | Introducing and preprocessing device of printing machines for easy-to-draw coiling material |
| CN201598058U (en) * | 2009-12-31 | 2010-10-06 | 佛山市绿之彩印刷有限公司 | Novel paper cutter |
| CN102259516A (en) * | 2010-05-28 | 2011-11-30 | 北京厚明德塑料彩印有限公司 | Thermal shrinkage film printing method and equipment, and printed thermal shrinkage film |
| CN102248766A (en) * | 2011-04-27 | 2011-11-23 | 苏州工业园区天势科技有限公司 | Wrinkle-proof device for printer |
| US20120274694A1 (en) * | 2011-04-27 | 2012-11-01 | Joel Sherwood Lawther | Printing multi-channel image on web receiver |
| RU2011119147A (en) * | 2011-05-12 | 2012-11-20 | Виктор Иванович Макуха (RU) | COMPACT DEVICE FOR PRESSING PAPER OR PAPERBOARD |
| CN202226422U (en) * | 2011-09-27 | 2012-05-23 | 瑞安市博业激光应用技术有限公司 | Paper pressing plate mechanism of printing press |
Non-Patent Citations (1)
| Title |
|---|
| 中国国家标准化管理委员会: "《中华人民共和国国家标准-纸和纸板抗张强度的测定》", 19 August 2008 * |
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