CN104553306A - Variable tension force control method for printing machine - Google Patents
Variable tension force control method for printing machine Download PDFInfo
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- CN104553306A CN104553306A CN201410819749.9A CN201410819749A CN104553306A CN 104553306 A CN104553306 A CN 104553306A CN 201410819749 A CN201410819749 A CN 201410819749A CN 104553306 A CN104553306 A CN 104553306A
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Abstract
The invention discloses a variable tension force control method for a printing machine, which is characterized in that a following function relationship P=-Alnv+P0+B is met in the process of controlling the speed of the printing machine, wherein P is a tension force adjustment amount; v is the speed of the machine; P0 is a tension force adjustment amount when the machine reaches a stable state; both A and B are adjustment parameters; the relationship between A and B meets B=Aln(Vmax); Vmax is a maximum speed of the machine; A=0.023 mr<2>; m is the mass of roll materials; r is the radius of the roll materials. According to the variable tension force control method for the printing machine, the problem that a mass of reject products are produced due to the fact that the tension force adjustment amount is invariable in the processes of machine starting, and speed increasing and in the prior art is solved.
Description
Technical field
The invention belongs to printing equipment technical field, relate to a kind of printing machine tension control method, be specifically related to a kind of printing machine variable tension control method.
Background technology
Under the condition of prior art, in the printing process of printing machine, machine is when lifting speed, and the adjustment that the tension force of machine controls is constant.And machine is when starting, need to overcome huge rotary inertia, just accelerator can be completed, machine always produces a large amount of waste products from static raising speed to maximum speed, for the printing machine of 250m/min, specifically, when machine speed is: a large amount of waste product can be produced during 0-60m/min, a small amount of waste product during 60-250m/min, is produced.These waste products are all produce because will overcome rotary inertia, and this can cause the equipment use totle drilling cost of user to raise.
But existing printing machine tension force controls, the regulated quantity that tension force controls is all fixing in lifting speed and constant speed process, because material volume needs to overcome huge rotary inertia the most at a high speed from static accelerating to, therefore easily causes tension adjustment quantity not sufficient, thus cause adjustment delayed, easily produce waste product.If just simple, tension adjustment amount is tuned up, then, in constant speed printing process, easily cause again system to shake, make system unstable.Therefore, in Up and down speeding, the best way adopts the mode of curve decay to control tension adjustment amount.The tension force that so just can perfectly solve under acceleration and deceleration and constant speed condition controls, and effectively reduces the generation of waste product, lowers machine use cost.
Summary of the invention
The object of this invention is to provide a kind of printing machine variable tension control method, to solve in prior art tension adjustment amount in the process of start lifting speed constant thus cause the problem that a large amount of waste product produces.
The technical solution adopted in the present invention is, a kind of printing machine variable tension control method, when controlling press speed, meets following functional relation:
P＝-Alnv+P
0+B (1)
In formula (1),
P represents tension adjustment amount,
V represents the speed of machine,
P
0the regulated quantity of tension force when representing that machine reaches stable state;
A and B is adjustment parameter,
A and B relation between the two meets B=Aln (V
max) (2),
In formula (2), V
maxfor the maximum speed of machine;
And, A=0.023mr
2(3)
In formula (3), m is the quality of material volume, and r is the radius of material volume.
Feature of the present invention is also,
The span of A is generally 0<A<20.
The invention has the beneficial effects as follows, the disadvantage that when changing printing machine acceleration and deceleration in the past, tension adjustment amount remains unchanged, adopt acceleration and deceleration curves tension adjustment mode, at the device start initial stage, machine is overcome the dynamics that huge rotary inertia needs increasing tension to regulate, and after machine run gets up, then revert to normal tension force to control, process like this, can reduce waste product effectively, improves the performance of printing machine, it is the same reason when machine down, otherwise, improve the performance of equipment, reduce equipment use totle drilling cost.
Accompanying drawing explanation
Fig. 1 is the comparison diagram of existing conventional tensile adjustment amount and tension adjustment amount of the present invention;
Fig. 2 be printing machine variable tension control method of the present invention when A gets different value, to the comparison diagram that decay and the initial value of tension adjustment amount impact.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
A kind of printing machine variable tension control method, when controlling press speed, meets following functional relation:
P＝-Alnv+P
0+B (1)
In formula (1), P represents tension adjustment amount,
V represents the speed of machine,
P
0the regulated quantity of tension force when representing that machine reaches stable state;
A and B is adjustment parameter,
A and B relation between the two meets B=Aln (V
max) (2)
In formula (2), V
maxfor the maximum speed of machine;
Wherein, A can change the rate of decay and the initial value of tension adjustment amount, A=0.023mr
2, wherein, m is the quality of material volume, and r is the radius of material volume.The quality that the value of A and printing machine institute materials are rolled up is relevant with radius, and material volume quality is larger, radius is larger, then the value of A is larger.In actual production process, user can adjust, to reach best effects according to the service condition of material volume.The span of usual A can be set in 0<A<20, and A value is larger, then the rate of decay of tension adjustment amount P is faster, and variable tension initial value is larger.
A kind of printing machine variable tension control method of the present invention, curve when it carries out tension adjustment as shown in Figure 1, wherein curve P
1represent tension variation figure when carrying out adjustment of tonicity according to method of the present invention, and P
0curve, represent the tension curve adjustment curve of existing routine, as can be seen from the figure, method of the present invention when carrying out tension adjustment, when low speed, the adjustment amount of tension force can reach 80 very greatly, now tension force controls response rapidly, along with the rising adjustment amount of speed reduces, gradually when machine speed reaches 250M/min, the tension adjustment amount of machine reaches normal value, and machine also enters stable state.
Fig. 2 is A when getting different value, on the rate of decay of tension adjustment amount and the impact of initial value;
In figure, P
3when representing A=10, the variation tendency that tension adjustment amount increases with speed, P
2. when representing A=20, the variation tendency that tension adjustment amount increases with speed.As can be seen from the figure, A value is larger, and the initial value of P is larger, and the rate of decay of P is also larger.
In concrete use procedure, adjustment A value can be needed, to make machine that optimal effectiveness can be reached according to what produce.Such as: when expecting that the coil diameter of volume quality that is comparatively large or material volume is larger, suitably can increase the numerical value of A, more effectively can overcome the impact that rotary inertia causes machine chromatography, to reach better effect.
Claims (2)
1. a printing machine variable tension control method, is characterized in that, when controlling press speed, meets following functional relation:
P＝-Alnv+P
0+B (1)
In formula (1),
P represents tension adjustment amount,
V represents the speed of machine,
P
0the regulated quantity of tension force when representing that machine reaches stable state;
A and B is adjustment parameter,
A and B relation between the two meets B=Aln (V
max) (2)
In formula (2), V
maxfor the maximum speed of machine;
And, A=0.023mr
2(3)
In formula (3), m is the quality of material volume, and r is the radius of material volume.
2. a kind of printing machine variable tension control method according to claim 1, it is characterized in that, the span of described A is generally 0<A<20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410819749.9A CN104553306B (en) | 2014-12-25 | 2014-12-25 | A kind of printing machine variable tension control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410819749.9A CN104553306B (en) | 2014-12-25 | 2014-12-25 | A kind of printing machine variable tension control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104553306A true CN104553306A (en) | 2015-04-29 |
| CN104553306B CN104553306B (en) | 2017-08-01 |
Family
ID=53070832
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| CN201410819749.9A Active CN104553306B (en) | 2014-12-25 | 2014-12-25 | A kind of printing machine variable tension control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111891811A (en) * | 2020-06-20 | 2020-11-06 | 科顺防水科技股份有限公司 | System and method for PID (proportion integration differentiation) hybrid control of tension of coiled material production line |
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| CN111891811A (en) * | 2020-06-20 | 2020-11-06 | 科顺防水科技股份有限公司 | System and method for PID (proportion integration differentiation) hybrid control of tension of coiled material production line |
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|---|---|
| CN104553306B (en) | 2017-08-01 |
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