CN102174950B - Automatic balancing mechanism for platemaking roller - Google Patents
Automatic balancing mechanism for platemaking roller Download PDFInfo
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- CN102174950B CN102174950B CN 201110050346 CN201110050346A CN102174950B CN 102174950 B CN102174950 B CN 102174950B CN 201110050346 CN201110050346 CN 201110050346 CN 201110050346 A CN201110050346 A CN 201110050346A CN 102174950 B CN102174950 B CN 102174950B
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Abstract
The invention relates to an automatic balancing mechanism for a platemaking roller. A corresponding device is arranged for the roller aiming at the unbalance generated on a platemaking roller body and different widths of plates on the platemaking roller body so as to realize the automatic balance under multiple sizes of plates. The automatic balancing mechanism is characterized in that: outer discs 14 at two ends of a roller 1 are provided with arc-shaped balancing grooves 17; a movable balancing block 18 is arranged in each balancing groove 17; and when different widths of printing plates are loaded, tail plate clamp bars 13 move to drive the balancing grooves 17 on the outer discs 14 to rotate so that the balancing blocks 18 move to corresponding balancing positions in the balancing grooves 17 along inner grooves of cams 19 and the whole roller is kept to be in a balancing state. The automatic balancing mechanism has the advantages that the same platemaking machine can be used for making multiplex widths of printing plates; a complex balancing drive control system is not required in the roller design, therefore the design cost of the roller and the production cost of the platemaking machine are greatly reduced; and the convenience for use and the easiness of general implementation are realized.
Description
Technical field
The invention belongs to the automatic platemaker field of printing industry, relate in particular to a kind of plate-making roller automatic balancing arrangement.
Background technology
Plate-making is one important process in whole printing-flow, and in the CTP platemaking machine, the design of cylinder plays vital effect to plate-making quality.Not only need cylinder to rotate stably, also need make forme being attached on the cylinder tightly, avoid version in the plate-making process, occurring flying, walking an edition phenomenon as far as possible.
In the present plate-making technology, because the quality of forme is larger, and required forme breadth is also different, and need there be respective change the position of tail clamp bar.Described tail clamp bar is attached on the cylinder, and the moment of inertia during along with the cylinder high-speed rotation is different, adds the aspirating hole design of cylinder itself, causes the imbalance of cylinder, and the rotation of cylinder will be no longer steady.The result does not meet the print request of rear operation so that the forme picture and text of making are shifted, and affects printing quality, and the life-span of platemaking machine also can have a greatly reduced quality.Some direct plate maker of the prior art can only be made a kind of forme of breadth, if need other breadth, must transform the structure of platemaking machine, and can not be applicable flexibly according to the forme breadth; Some then guarantees that by the rotating speed that reduces cylinder forme can not move, thereby affects production efficiency.So, cylinder is made balance adjustment, it is quite necessary making cylinder all be in all cases equilibrium state.
For the equilibrium problem of cylinder, there are many solutions in the prior art.For example patent document DE10128606A1 and US5,813,346A by means of the outside sense mechanism that arranges at cylinder, and corresponding to a mass unit of this mechanism, comes the adjustment movement unit to cause it to move on the suitable equilibrium position; Perhaps by an external actuator is set, so that mass unit can move on the position that the imbalance that makes cylinder is reduced or eliminate fully.And in order actuator to be controlled or obtained the equilibrium position that mass unit arrives, also need to be provided with the computing machine of corresponding recognition device and control device, with the control actuator, make mass unit move to desired location, its application operating is complicated, is difficult for generally using.Chinese invention patent application 200610077835.2 has been improved patent document US5,813, device design among the 346A, but it can only keep balance or do certain two kinds of specification when low speed transient equilibrium (as shown in Figure 1), and its equilibrium ratio of doing is more coarse, can not accurately be applicable to the forme of plurality of specifications.
Summary of the invention
The present invention is directed to the imbalance that cylinder body and different breadth plate produce, according to law of unbalanced, cylinder is arranged corresponding device, make cylinder can realize self-poise under the sizes plate.The cylinder unbalanced factor that the present invention utilizes cam and a slide block that moves in can the arcuate furrow on outer disc to come self-poise to produce because of the forme that different breadth sizes are installed, utilize the transient equilibrium that the fixed mass piece is realized cylinder self aspirating hole and air chamber design is installed, make cylinder when normal rotation, can be in stable equilibrium state always.
Cylinder body transient equilibrium design concept is: cylinder is comprised of outer cylinder and internal layer distribution cylinder, and the two ends of cylinder all have atmospheric air chamber and the air passing hole of relative cylinder two ends symmetry, and the groove of bleeding on the outer disk is also identical.Have the equally distributed groove that fastens the tail clamp bar on the outer cylinder, also have the permanent airway of symmetrical permanent air chamber and connection hollow cylinder inside on the internal layer cylinder.Have aspirating hole in the groove, the expansion vertical view that aspirating hole distributes at whole cylinder is the inverted trapezoidal of opening, as shown in Figure 2.Have the airway that leads to the cylinder two ends that length differs at internal layer distribution cylinder, as shown in Figure 3, can make the relative cylinder of whole air flues two ends symmetrical.Before loading forme and counterbalance weight, at first when the anury clamp bar, after immediate shipment the higher authorities clamp bar, computation and measurement goes out cylinder in the eccentric point of both ends of the surface, and cylinder and fixing front page folder are carried out the transient equilibrium processing; The unbalanced factor that produces owing to the position movement of tail clamp bar can come balance tail clamp bar by at outer disc edge, cylinder two ends and tail clamp bar opposite position the stable equilibrium mass being installed, and make cylinder reach transient equilibrium.Like this, can keep cylinder integral body to be in all the time equilibrium state.
The present invention has improved defective of the prior art, has simplified complicated cylinder design, has solved same platemaking machine to the application of different breadth formes, can not only effectively adsorb the forme of different breadth sizes, also can reduce production costs, easy to use, easy to implement.
Description of drawings
Fig. 1 is the schematic diagram of the cylinder balanced system in the Chinese invention patent application 200610077835.2;
Fig. 2 is the cross-sectional view of cylinder, shows the structure member of cylinder;
Fig. 3 aspirating hole shows symmetrical aspirating hole mentality of designing at the expansion vertical view that whole cylinder distributes;
Fig. 4 a is the location drawing of the equilibrium point of plate;
Fig. 4 b is the equilibrium point position matched curve figure of plate;
Fig. 5 cylinder end face disc B is to figure, shown the relative position of counterbalance weight and arc compensating groove on initial and termination place and the outer end disc of tail clamp bar;
The Quality Map of each specification plate of Fig. 6;
Each specification plate of Fig. 7 is at the broken line graph of cylinder parcel radian;
The broken line graph of Fig. 8 plate equilibrium point position.
Embodiment
The project organization of the automatic balancing arrangement among the present invention is shown in Fig. 2 and 5: cylinder 1 is comprised of outer cylinder 2 and internal layer distribution cylinder 3 deadends suit.Have a lot of circumferential trapezoidal grooves 4 on the outer cylinder 2, distribute vertically on outer cylinder 2 surfaces, fasten movably tail clamp bar 13 with this.Front page folder 12 is fixed on the outer cylinder 2.Have the aspirating hole 5 along groove direction in each groove 4 inside.Internal layer distribution cylinder 3 forms air chamber 6 with outer cylinder 2 inwalls, and air chamber 6 is symmetrical between two parties about internal layer distribution cylinder 3.The below symmetry of internal layer distribution cylinder 3 interior air chambers 6 have the first airway 7.On the support ring 8 of back-up roller axle 10 and distribution cylinder 3 air passing hole 9 is arranged.Internal layer distribution cylinder 3 open that length differs lead to second airway 16 at cylinder two ends the time, can make the relative internal layer distribution of passage cylinder 3 two ends symmetrical.End face near cylinder 1 on the outer disc 14 at cylinder 1 two ends has deep-slotted chip breaker 15, and the outer face of outer disc 14 has arc compensating groove 17.Closely be buckled with mutually a counterbalance weight 18 with compensating groove 17, movably counterbalance weight 18 is used for the forme of the different breadths of balance.Cam 19 also is equipped with in the outer end of outer disc 14, and its relative cylinder is static.Counterbalance weight 18 can be moved along arc compensating groove 17 by the resistance of cam 19 inside grooves when outer disc 14 rotated, and is relative static when relying on friction force to keep turning round between in-position back balance piece 18 and the compensating groove 17, guarantees the transient equilibrium of cylinder.When loading the forme of different breadth sizes, tail clamp bar 13 moves, (the position when dotted line tail clamp bar 13 is minimum breadth plate among the figure, position when solid line tail clamp bar 13 is maximum breadth plate, compensating groove changes), the compensating groove 17 that drives on the outer disc 14 rotates, and makes counterbalance weight 18 move to corresponding equilibrium position in compensating groove 17, keeps whole cylinder to be in equilibrium state.
Cylinder body transient equilibrium designing technique characteristics are: the two ends of above-mentioned cylinder 1 all have the air passing hole 9 of relative cylinder 1 symmetry, the also corresponding symmetry of groove 15 of bleeding of the arc on the two ends outer disc 14.Have equally distributed groove 4 in order to fasten tail clamp bar 13 on the outer cylinder 2, also have the first airway 7 of symmetrical permanent air chamber 6 and connection hollow cylinder 1 inside on the internal layer cylinder 3.Have aspirating hole 5 in the groove 4.Internal layer distribution cylinder 3 open that length differs lead to second airway 16 at cylinder 1 two ends the time, can make whole the second airway 16 relative cylinders 1 two ends symmetrical.Before loading forme and counterbalance weight 18, at first when anury clamp bar 13, after immediate shipment the higher authorities clamp bar 12, computation and measurement goes out cylinder in the eccentric point of both ends of the surface, and cylinder and fixing front page folder 12 are carried out the transient equilibrium processing; The unbalanced factor that produces owing to the position movement of tail clamp bar 13 can come balance tail clamp bar by at outer disc 14 edges, cylinder two ends and tail clamp bar 13 opposite positions stable equilibrium mass 20 being installed, and make cylinder reach transient equilibrium.Like this, can keep cylinder integral body to be in all the time equilibrium state.
The transient equilibrium designing technique characteristics that cylinder loads behind the forme are: keep certain friction force on the above-mentioned cylinder 1 two ends outer disc 14 between arc compensating groove 17 and the counterbalance weight 18, both can relative motion under the External Force Acting, and also can keep relatively static during rollers running.Cam 19 its inside groove tracks that have inside groove are exactly the track of relatively different plate size balanced piece motions.When loading the forme of different breadth sizes, tail clamp bar 13 will certainly move, and drives outer disc 14 rotations.At this moment, compensating groove 17 rotates along with the rotation of outer disc 14, cam 19 relative drum shafts 10 are static, counterbalance weight 18 along the inside groove of cam 19 in 17 li movements of compensating groove, cylinder 1 is behind the forme that different breadth sizes are installed, the eccentric position of its end face and counterbalance weight 18 are symmetrical about the end face centre point, reach counterbalance effect.
The calculating of counterbalance weight quality is according to the data in the table 1.The radius of cylinder is 175mm, so the position in counterbalance weight 18 relative axle center can not surpass this numerical value.Suppose that the quality of the counterbalance weight that calculates is as shown in table 1 when the maximum radius of counterbalance weight is 150mm, get biggest quality 315.450g, the quality of counterbalance weight is about 315.450g.Then getting respectively quality is that 310g and 320g calculate, and draws data as shown in table 1, and finally selecting the counterbalance weight quality is 320g, and cylinder both sides mean allocation is 160g.The shape design of compensating groove derives from the position of the equilibrium point that calculates.Data can be found out No. 1 from table 1, and No. 2 and No. 4 clamp bar escape rules are larger, are unfavorable for the round and smooth connection of curve, and these several plates use less.Matched curve equation in equilibrium point position is: y=-0.0427x
2+ 25.3248x-3614.2, curve is shown in Fig. 4 a and Fig. 4 b.A cam also is equipped with in the outer end of outer disc, and this cam can't rotate along with outer disc, and its relative drum shaft is static.When loading the forme of different breadth sizes, the tail clamp bar will certainly move, and drives the outer disc rotation.At this moment, balance groove on the outer disc rotates along with the rotation of outer disc, and cam is that relative drum shaft is static, counterbalance weight will be mobile in the balance groove along the inside groove of cam, make cylinder behind the forme that different breadth sizes are installed, cylinder is symmetrical about the end face centre point at eccentric point and the counterbalance weight of end face, reaches counterbalance effect.
The computational data of table 1 plate specification and equilibrium point, counterbalance weight quality
This method for designing makes cylinder easy to process succinct, can eliminate unbalanced factor to the impact of cylinder when using the forme of different breadth sizes, makes cylinder reach balance when normal operation, and is in equilibrium state always.And the design processing cost of this cylinder is low, can generally be suitable for.
The different breadths that the present invention has from the forme of different size are on the impact of balance device on the platemaking machine, improve the design of cylinder, cylinder can be satisfied when the forme of different breadth sizes is loaded in cylinder surface, cylinder still can held stationary operation, thereby the normal operation that keeps platemaking machine.The present invention has remedied the deficiencies in the prior art, when making forme be fixed on the cylinder, guarantees that cylinder can keep balance when running up.Cylinder design of the present invention need not be complicated the balance drive control system, greatly reduce the design processing cost of cylinder and the production cost of platemaking machine, easy to use, be easy to generally implement.
The above is preferred embodiment of the present invention only, is not to limit claim scope of the present invention, and therefore all other do not break away from the equivalence change of finishing under the disclosed spirit or modify, and all should be contained in the claim scope of the present invention.
Claims (1)
1. automatic balancing arrangement that is used for plate-making roller is characterized in that: this device has by outer cylinder (2) and internal layer distribution cylinder (3) deadend and is set with the cylinder (1) that forms; Have the outer cylinder (2) of much circumferential trapezoidal groove (4), described groove (4) distributes vertically on outer cylinder (2) surface, fastens movably tail clamp bar (13) with this; Be fixed on the front page folder (12) on the outer cylinder (2); At the inner aspirating hole (5) that has along groove direction of each groove (4); Internal layer distribution cylinder (3) forms air chamber (6) with the inwall of outer cylinder (2), and air chamber (6) is symmetrical between two parties about internal layer distribution cylinder (3); Internal layer distribution cylinder (3) has the first airway (7) symmetrically in the below of interior air chamber (6); On the support ring (8) of back-up roller axle (10) and internal layer distribution cylinder (3) air passing hole (9) is arranged; Wherein, have the second airway (16) that leads to the cylinder two ends that length differs at internal layer distribution cylinder (3), so that the second airway (16) is symmetrical with respect to internal layer distribution cylinder (3) two ends; The upper end face near cylinder (1) of the outer disc (14) at cylinder (1) two ends has deep-slotted chip breaker (15), and the outer face of outer disc (14) has arc compensating groove (17); The movably counterbalance weight (18) that is used for the forme of the different breadths of balance closely interlocks with compensating groove (17) and keeps certain friction force, counterbalance weight (18) can be movable relatively under external force with compensating groove (17), can keep relatively static when rollers running; The static cam of relative cylinder (19) also is equipped with in the outer end of outer disc (14); Counterbalance weight (18) can be moved along arc compensating groove (17) by the resistance of cam (19) inside groove when outer disc (14) rotated, relative static when relying on friction force to keep running between in-position back balance piece (18) and the compensating groove (17), guarantee the transient equilibrium of cylinder; When loading the forme of different breadth sizes, tail clamp bar (13) is mobile, the compensating groove (17) that drives on the outer disc (14) rotates, and makes counterbalance weight (18) move to corresponding equilibrium position in compensating groove (17), keeps whole cylinder to be in equilibrium state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110050346 CN102174950B (en) | 2011-03-03 | 2011-03-03 | Automatic balancing mechanism for platemaking roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110050346 CN102174950B (en) | 2011-03-03 | 2011-03-03 | Automatic balancing mechanism for platemaking roller |
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| Publication Number | Publication Date |
|---|---|
| CN102174950A CN102174950A (en) | 2011-09-07 |
| CN102174950B true CN102174950B (en) | 2013-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110050346 Expired - Fee Related CN102174950B (en) | 2011-03-03 | 2011-03-03 | Automatic balancing mechanism for platemaking roller |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102853969B (en) * | 2012-08-31 | 2014-11-19 | 杭州东信光电科技有限公司 | Automatic dynamic balance device of direct plate setter |
| CN111077738B (en) * | 2018-10-19 | 2022-03-15 | 深圳市印之明科技有限公司 | Intelligent counterweight adjusting system of photoetching machine roller |
| CN115071250B (en) * | 2022-06-14 | 2023-08-25 | 深圳市印之明科技有限公司 | Dynamic balance control structure of external drum type CTP |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE394611T1 (en) * | 2004-03-04 | 2008-05-15 | Heidelberger Druckmasch Ag | DEVICE FOR REDUCING THE UNBALANCE OF AN EXPOSURE DRUM |
| JP4254696B2 (en) * | 2004-11-22 | 2009-04-15 | ソニー株式会社 | Automatic balancing device, rotary drive device and disk drive device |
| US7617772B2 (en) * | 2005-05-13 | 2009-11-17 | Heidelberger Druckmaschinen Ag | Balancing system for balancing a printing drum and method for balancing the printing drum |
| CN202017728U (en) * | 2011-03-03 | 2011-10-26 | 南京林业大学 | Automatic balance mechanism for plate making roller |
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| CN102174950A (en) | 2011-09-07 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20110907 Assignee: Nantong Dayi Printing Co., Ltd. Assignor: Nanjing Forestry University Contract record no.: 2018320000439 Denomination of invention: Automatic balancing mechanism for platemaking roller Granted publication date: 20130403 License type: Common License Record date: 20181229 Application publication date: 20110907 Assignee: Nantong New Green Garden Printing Co., Ltd. Assignor: Nanjing Forestry University Contract record no.: 2018320000440 Denomination of invention: Automatic balancing mechanism for platemaking roller Granted publication date: 20130403 License type: Common License Record date: 20181229 |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191217 Address after: 210000 room 206, No.20 Yunnan Road, Gulou District, Nanjing, Jiangsu Province Patentee after: Nanjing Pusheng Printing Technology Co., Ltd Address before: Nanjing City, Jiangsu province 210037 Longpan Road No. 159 Patentee before: Nanjing Forestry University |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20200303 |