CN1246145C

CN1246145C - Flexibl accurate pressure regulating system in printing machine

Info

Publication number: CN1246145C
Application number: CN 02139680
Authority: CN
Inventors: 刘为成
Original assignee: Individual
Current assignee: Zhuzhou Sinovan Packaging Technology Co ltd
Priority date: 2002-09-29
Filing date: 2002-09-29
Publication date: 2006-03-22
Anticipated expiration: 2022-09-29
Also published as: CN1462686A

Abstract

The present invention relates to a flexible accurate pressure regulating system in a printing machine, which is characterized in that two worms (7) installed on the same rotating shaft (4) respectively drive two worm wheels (5) and respectively drive two sets of screw rod and nut mechanisms (9, 10) which are linked with worm wheels (5) and are added with gear pairs or belt wheel pairs; the screw rod and nut mechanisms are respectively connected with a set of moving roller shaft support (11) which is provided with a digital display (13) and makes rectilinear reciprocating movement; thereby, a flexible accurate pressure regulating system in a printing machine, which can directly detect the rectilinear reciprocating movement quantity of the moving roller shaft support (11) through rotating an encoder and viewing the digital display, is formed. The accurate pressure regulating system enhances about 1 to 2 accuracy grades higher than that of the traditional graduated disk and indicating needle combining device.

Description

Flexible printing machine accurate voltage regulating system

Technical field

The present invention relates to a kind of flexible printing machine accurate voltage regulating system, be mainly used in the ink film accurate transfer on the inking roller on gentle version, the ink film on the version that perhaps will soften accurately is impressed on the stock, belongs to flexible printing pressure regulation method and device class.

Background technology

Traditional flexible printing machine is regulated the regulating system of inking pressure and impression pressure, two eccentric wheels normally are installed in a rotating shaft (or two gears are installed, drive two eccentric gear axle sleeves more respectively, this gear bush buried bearing and the roll shaft that need regulate), the numerical value of regulating in order to know, usually at dial of its outer termination and indicator device, when turning cylinder drive eccentric wheel was controlled required dancer rools position, dial and pointer relative motion showed regulated quantity.In this traditional mechanism, original position that the regulated quantity S of roll shaft and eccentric eccentric amount e and eccentric wheel rotate and the trigonometric function of corner α are nonlinear function; So, still do not have instrument so far and can accurately measure its adjusting value S.Just because of the above inherent structure of dial needle device, be difficult to the regulated quantity of Measurement Resolution greater than 0.2mm with said structure; And this is for the flexographic printing of ten minutes easy deformation, is crucial, and being again very needs.

Technology contents

Purpose of the present invention: aim to provide a kind of flexible printing machine voltage-regulating system that can accurately regulate and accurately show the minor adjustments amount, realize the accurate transfer and the high accuracy printing of ink film on the ink roller thus.

This flexible printing machine accurate voltage regulating system, it is characterized in that: it is to drive two worm gears 5 respectively by two worm screws 7 that are installed in the same rotating shaft 4, and drives two covers and worm gear 5 interlocks and bolt and

nut mechanism

9,10 that add cogged spoke or synchronous pulley spoke respectively; This bolt and nut mechanism is connecting a cover band digital display 13 respectively and is making the round mobile roller support 11 that moves of straight line; Form by rotary encoder thus and check that digital display just can directly measure the flexible printing machine accurate voltage regulating system that mobile roller support 11 straight lines come and go amount of movement.

Described and worm screw 7 interlocks also have digital display 13 and make screw rod 9 one ends that straight line comes and goes the mobile roller support 11 that moves double-direction thrust ball bearing 6 is housed.

The nut 10 of configuration directly is connected with worm gear 5 on the described worm screw 7, this worm gear 5 again simultaneously with synchronous pulley 15 is being set and by removing the inclined to one side yard device 13 of rotation of connecting band digital display 14 with these synchronous pulley 15 synchronous another synchronous pulleys 17 that link to each other.

Described reducing motor 3 can change stepper motor into.

Can pacify a handwheel in the described rotating shaft 4, constitute the manual voltage-regulating system of no motor.

This flexible printing machine accurate voltage regulating system according to the design of above technical scheme, its advantage is: can select suitable bolt and nut mechanism, gear drive to pay or the synchronous pulley transmission is paid according to required adjustable range and resolution ratio, the rotary encoder parameter can realize fine adjustment and accurately show, therefore, can make more traditional dial of its precision and pointer composite set improve about 1-2 grade.

Description of drawings

Accompanying drawing 1,2 is structural principle schematic diagram of the present invention.

Among the figure: 1. belt wheel 2. belt wheels 3. reducing motors 4. rotating shafts 5. worm gears 6. two-direction thrust bearings 7. worm screws 8. gears 9. screw rods 10. nuts 11. move roller support 12. gears 13. rotary encoders 14. digital displays 15. synchronous pulleys 16. driving-belts.

The specific embodiment

Flexible printing machine accurate voltage regulating system as shown in Figure 1, 2 is actually two kinds of embodiments in same design.

Embodiment 1

This voltage-regulating system shown in the figure is mainly by belt wheel 1,2, and reducing motor 3, rotating shaft 4, worm gear 5, two-direction thrust bearing 6, worm screw 7,

gear

8,12, screw rod 9, nut 10, mobile roller support 11, rotary encoder 13, digital display 14 etc. are formed.Two worm screws 7 are housed in the rotating shaft 4, driving 2 worm gears 5 respectively rotates, screw rod 9 is installed on the worm gear 5, one end of screw rod 9 is equipped with double-direction thrust ball bearing 6, thereby can not move axially, but 10 on the nut on it can promote mobile roller support 11 straight lines to be come and gone mobile, owing on the screw rod 9 gear 8 is housed, rotate synchronously by gear 12 driven

rotary encoders

13,14 record rotary encoders of digital display rotation amount, because screw rod 9 is to drive nut 10 and gear 8 rotations simultaneously, so in fact digital display 14 is exactly to write down nut 10 to promote the value that mobile roller support 11 straight lines move.

During operation, reducing motor 3 drives rotating shaft 4 by belt wheel 2,1 and rotates, owing to slow down for 4 times by reducing motor 3, belt wheel 2, worm gear 7, worm screw 5, screw rod 9, nut 10 etc., as long as the revolution umber of pulse of rotary encoder is suitable, just can reach the resolution ratio (even higher resolution ratio) of 0.01mm, thereby accurately show the regulated quantity of regulating system.Certainly, also can change belt wheel 2,1 into the synchronous pulley spoke, motor changes stepper motor into; Just can realize digital form adjusting pressure; If cancellation reducing motor 3 and belt wheel 2,1, and handwheel is installed in rotating shaft 4, can also accurately regulate pressure by hand.Two kinds of voltage-regulating systems that numerical control is regulated or regulated have manually so just been become.

Embodiment 2 (see figure 2)s

This voltage-regulating system is by reducing motor 3, belt wheel 1,2, compositions such as the worm gear 5 of band spiral shell, worm screw 7, mobile roller support 11, screw rod 9, rotating shaft 4,

synchronous pulley

15,17, driving-belt 16, digital display 14, rotary encoder 13; Reducing motor 3 is by belt wheel 1,2 drive rotating shaft 4 rotates, two worm screws 7 are housed in the rotating shaft 4, drive two worm gears 5 that nut 10 is housed respectively, drive screw 9 also drives mobile roller support 11 and makes the straight line back and forth movement, on the worm gear 5 that nut is housed, with fashionable dress synchronous pulley 15, the synchronous pulley 17 that drives on the dress rotary encoder 13 by synchronous pulley 17 rotates, the rotation amount of 14 records of digital display synchronous pulley 17, because when worm gear 5 rotations of nut are housed, be to drive mobile roller support 11 and rotary encoder 13 simultaneously, be actually the straight line amount of movement that shows mobile roll shaft so numeral shows; In same this cover mechanism, as long as worm gear screw rod, bolt and nut, synchronous pulley are sent out and each parameter of rotary encoder select suitable, be the straight line regulated quantity of mobile roller support 11 resolution ratio (even higher resolution ratio) with 0.01mm can be shown, reducing motor with sample mechanism also can change stepper motor into, realize Digital Control, the artificial accurately control of also available handwheel.

Above-mentioned flexible printing accurate voltage regulating system's control method and principle are as follows:

As to require stroke be S=10mm, and resolution ratio is 0.01mm, can select:

Screw pitch p=4mm;

Screw head is counted z=1;

The number of teeth of gear 8 is Z8=25;

The tooth number Z 12=64 of gear 12;

The every circle of encoder is the absolute type encoder of 1024 pulse t, and digital display is 4.

When bar rotated the α angle, the amount of movement of screw rod straight line was:

(α/360°)×Z×P＝(α/360°)×1×4＝(α/90°)

Rotary encoder rotates:

(α/360°)×(Z ₈/Z ₁₂)＝(α/360°)×(25/64)

The digital display show value is: (α/360 °) * (Z ₈/ Z ₁₂) * t

Then have: (α/360 °) * 4=(α/360 °) * (25/64) * 1024t

Be 1=100t

t＝0.01(mm)

Be that each arteries and veins value is equivalent to 0.01mm.

When screw rod rotates the α angle:

1. screw rod promotes the roller support amount of movement and is: (α/360 °) * Z * p;

2. rotary encoder rotates and to be: (α/360 °) * (Z8/Z12);

3. the digital display show value is: (α/360 °) * (Z8/Z12) * t;

(α/360°)×Z×p＝(α/360°)×(Z8/Z12)×t。

Claims

1, a kind of flexible printing machine accurate voltage regulating system, it is characterized in that: it is to drive two worm gears (5) respectively by being installed in same rotating shaft (4) two worm screws (7) last, that driven by reducing motor (3), and drives two covers and worm gear (5) interlock and bolt and nut mechanisms that add cogged spoke or synchronous pulley spoke (9,10) respectively; This bolt and nut mechanism is connecting a cover band numeral respectively and is showing (13) and make the round mobile roller support (11) that moves of straight line; Form by rotary encoder thus and check that numeral signal device just can directly measure the flexible printing machine accurate voltage regulating system that mobile roller support (11) straight line comes and goes amount of movement.

2, a kind of flexible printing machine accurate voltage regulating as claimed in claim 1 system is characterized in that with worm screw (7) interlock and has digital display (13) and make screw rod (9) one ends that straight line comes and goes the mobile roller support (11) that moves double-direction thrust ball bearing (6) is housed.

3, a kind of flexible printing machine accurate voltage regulating as claimed in claim 1 system, it is characterized in that the nut (10) that described worm screw (7) goes up configuration directly is connected with worm gear (5), this worm gear (5) again the while with synchronous pulley (15) is being set and by removing the rotary encoder (13) of connecting band digital display (14) with another synchronous pulley (17) that this synchronous pulley (15) links to each other synchronously.

4, a kind of flexible printing machine accurate voltage regulating as claimed in claim 1 system is characterized in that described reducing motor (3) can change stepper motor into.

5, a kind of flexible printing machine accurate voltage regulating as claimed in claim 1 system is characterized in that can pacifying a handwheel in the described rotating shaft (4), constitutes the manual voltage-regulating system of no motor.