CN104339896A - One-way driving mechanism for stepless stroke regulation - Google Patents
One-way driving mechanism for stepless stroke regulation Download PDFInfo
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- CN104339896A CN104339896A CN201410537176.0A CN201410537176A CN104339896A CN 104339896 A CN104339896 A CN 104339896A CN 201410537176 A CN201410537176 A CN 201410537176A CN 104339896 A CN104339896 A CN 104339896A
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Abstract
The invention provides a one-way driving mechanism for stepless stroke regulation. The one-way driving mechanism for stepless stroke regulation comprises a lever mechanism and a one-way driving mechanism capable of adjusting the fulcrum position, wherein the lever mechanism capable of adjusting the fulcrum position comprises an active end driving element, a lever and the like, the one-way driving mechanism comprises a first one-way clutch mechanism, a second one-way clutch mechanism and the like, the lever is arranged on the adjustable fulcrum, the active end of the lever is hinged, supported and arranged at one end of the lever, the driven end of the lever is hinged, supported and arranged on an eccentric shaft of a one-way driving shaft and is matched with the lever at the other end of the lever, the active end driving element is arranged on a lever active end hinge supporter, the first one-way clutch mechanism is coaxially connected with a one-way rotating shaft, a one-way roller and a one-way wheel are respectively and coaxially connected with the one-way rotating shaft, and the first one-way clutch mechanism and the one-way clutch mechanism are arranged on the one-way rotating shaft. The one-way driving mechanism is widely applied to the various kinds of conversion from active end movement with the fixed stroke to one-way slave end movement with the stepless adjustable strokes, the transmission ration is precise, the transmission efficiency is high, and the impact and the noise are low.
Description
Technical field
The present invention is a kind of one-way drive mechanism of stepless regulation stroke, and belonging to drive end in machine driving is the reciprocating motion that stroke is fixed, and driven end is stroke infinitely variable unidirectional operation mechanism.The fields such as printing device, printing equipment, packaging facilities, punching press/blanking equipment can be widely used in, belong to the innovative technology of the one-way drive mechanism of stepless regulation stroke.
Background technology
In various ribbon printer, due to print rear colour band print area can not again print, upper once print time colour band need be driven into next section of unprinted position, colour band is topmost consumptive material on ribbon printer, and its cost prints cost topmost composition.Because different application occasion print area is different, therefore the colour band needed for different application drives step pitch different.Therefore the driving of colour band and step pitch regulation and control are the key mechanism of ribbon printer, its response promptness driven and drive the precision of step pitch directly to have influence on print speed, print quality and printing cost.
In the market in visible ribbon printer, for blanching color bar printer, the driving of its colour band mainly contains two kinds of modes:
1) except the reciprocal driving that printhead stroke is fixed, colour band driving is carried out in addition with independent drive source (as stepper motor/servomotor or cylinder), it drives stroke to rely on the stroke of adjustment drive end (as the corner of stepper motor/servomotor, or drive the reciprocating stroke of cylinder). this mode adds infrastructure cost, organization volume, control cost, and need coordinating between colour band action with the action of print head to control, at high-speed cruising (reciprocating frequence is more than 400 beats/min), or when there is interfering signal, easily cause the imbalance interference of both actions, adopt during pneumatic drive source and more can produce larger impact, vibration and noise.In practical application, the spendable speed of this structure (reciprocating frequence) is the highest about 550 beats/min.
2) drive source of fixed journey system reciprocating motion as colour band of printhead is adopted, adopting initiatively tooth bar (back and forth driven by printhead, reciprocating stroke is fixed)-idler gear (centre of gyration position changeable)--the mechanism performing gear (centre of gyration is fixed) drives colour band.Because the centre of gyration of idler gear is variable, therefore the pitch diameter of its engagement is variable.When the reciprocating stroke of tooth bar is constant, when the pitch diameter of idler gear changes, the corner of idler gear can change along with the change in location at its center, and pitch diameter is larger, and its corner is less, otherwise corner is larger; When the corner of idler gear changes, the corner also respective change of the execution gear engaged with it.Thus can realize driving stroke (rack stroke) to fix, and driven stroke (performing gear corner) can step-less adjustment.
But there is a serious defect in this mechanism, namely after the centre of gyration of intermediate sizes changes (not in its reference circle center of circle), itself and tooth bar and to perform the pitch circle (nodel line) of gear no longer tangent, produce interference between pitch circle or away from, engagement between them is no longer conjugation engagement, in engagement process, tooth and tooth can interfere or back lash is excessive even departs from, and violate theory of mechanics.Therefore this mechanism is very easy to the damage causing parts (tooth bar, idler gear, execution gear), and drives precision very poor (colour band step pitch error exceedes ± 3mm), thus causes the utilization rate of colour band very low.Especially when at a high speed (reciprocating frequence is more than 400 beats/min), drive precision and noise sharply to worsen, the damage of parts is very fast (according to different parts materials, be approximately only in service life of its parts 400 hours ~ 600 hours even lower) also.
Summary of the invention
the object of the invention is to consider the problems referred to above and provide a kind of volume little, cost is low, and can reduce interference effect and vibration, reduces noise, extends the one-way drive mechanism of the stepless regulation stroke in parts service life.The present invention can be applicable to even superfast blanching color bar inker at a high speed.
technical scheme of the present invention is: the one-way drive mechanism of stepless regulation stroke of the present invention, include leverage and the one-way drive mechanism of adjustable fulcrum position, adjustable fulcrum position leverage includes fulcrum adjusting screw(rod), lever driven end is hinged, drive end actuator, lever, lever drive end are hinged, adjustable fulcrum, fulcrum adjustment seat, one-way drive mechanism includes unidirectional drive seat, first one-way clutch mechanism, second one-way clutch mechanism, one-directional rotation axle, unidirectional roll, bearing block, one-way wheel, wherein lever is installed on adjustable fulcrum, adjustable fulcrum is bearing in fulcrum adjustment seat, fulcrum adjustment seat is equiped with the fulcrum adjusting screw(rod) of the position that can regulate adjustable fulcrum, the hinged one end being installed in lever of lever drive end, slot fit on the hinged eccentric shaft being installed in unidirectional drive seat of lever driven end and in the other end and lever of lever, drive end actuator be installed in lever drive end hinged on, first one-way clutch mechanism is arranged in the hole of unidirectional drive seat, and be coaxially connected with one-directional rotation axle, and one-directional rotation axle is bearing on bearing block, unidirectional roll and one-way wheel are coaxially connected with one-directional rotation axle respectively, as the executive item of one-way movement, first one-way clutch mechanism and the second one-way clutch mechanism are installed in on one-directional rotation axle.
the one-way drive mechanism of stepless regulation stroke of the present invention has following effect:.
1) stepless regulation stroke of the present invention and one-way drive mechanism, in theory of mechanics, the action of each parts is unique, and stroke is determined, and movement relation between each parts without any interference be separated, therefore can obtain good precision;
2), when each hinged employing rolling bearing is as movement parts, its friction pair is rolling friction, though therefore under high-speed cruising noise also very low, the life-span is long;
3) the unidirectional drive machine of stepless regulation stroke of the present invention can be applicable on high-speed silent coder, printhead is just arranged on drive end actuator, the reciprocating motion of printhead is as the power source of colour band unidirectional drive, colour band is reeled by unidirectional roll and drives, linear reciprocating motion due to drive end is driven by toothed belt transmission toggle by servomotor, its rate curve is sine curve, when bottom-end of stroke (when namely print head touches colour band and printed material) and top dead-centre, its linear velocity is 0 in theory, and noise when therefore printing is very little with vibration.
4) linear reciprocating motion of drive end is driven by toothed belt transmission toggle by servomotor, servomotor its rotating speed when keeping permanent moment of torsion can reach 3000RPM, after Timing Belt 1:2 slows down, the reciprocating frequency of drive end can reach 1500 times/min, and therefore when keeping servomotor perseverance moment of torsion, the print speed of high-speed silent coder can reach 1500 beats/min.
mechanism principle of the present invention is applied to (MFP50 and MFP60 blanching color bar inker) after on blanching color bar inker, the reciprocating motion of direct employing printhead is as the power source of colour band unidirectional drive, the colour band that can obtain 2 ~ 24mm scope step-less adjustment drives step pitch, and under the print frequency more than 1000 beats/min, obtain ± the step pitch of the colour band accurately control accuracy of 0.5mm, and exceeded 2500 hours the service life of parts (under 600 beats/min of speed) and damage not yet; And almost friction and noise, the also impact (this mechanism is without automatically controlled) of interference-free signal during the operation of this mechanism.With 1 volume 100m length colour band, each print length 6mm counts, and often roll up colour band number of copies and never adopt more than 11000 times that rise to the printer adopting mechanism of the present invention for 5000 ~ 6000 of mechanism of the present invention times, colour band consumed cost reduces by more than 80%.The present invention is used for blanching color bar printer, and speed is high, and colour band utilization rate is high.The present invention is that a kind of design is ingenious, function admirable, the one-way drive mechanism of convenient and practical stepless regulation stroke.
Accompanying drawing explanation
fig. 1 is structural representation of the present invention.
Detailed description of the invention
embodiment:
structural representation of the present invention as shown in Figure 1, the one-way drive mechanism of stepless regulation stroke of the present invention, include leverage and the one-way drive mechanism of adjustable fulcrum position, the leverage of adjustable fulcrum position include that fulcrum adjusting screw(rod) 01, lever driven end are hinged 02, drive end actuator 09, lever 10, lever drive end are hinged 11, adjustable fulcrum 12, fulcrum adjustment seat 13, one-way drive mechanism includes the first one-way clutch mechanism 03, second one-way clutch mechanism 04, one-directional rotation axle 05, unidirectional roll 06, bearing block 07, one-way wheel 08, wherein lever 10 is installed on adjustable fulcrum 12, adjustable fulcrum 12 is bearing in fulcrum adjustment seat 13, fulcrum adjustment seat 13 is equiped with the fulcrum adjusting screw(rod) 01 of the position that can regulate adjustable fulcrum 12, lever drive end hinged 11 is installed in one end of lever 10, slot fit on the eccentric shaft that lever driven end hinged 02 is installed in unidirectional drive seat 03A and in the other end and lever of lever 10, drive end actuator 09 is installed on lever drive end hinged 11, first one-way clutch mechanism is arranged in the hole of unidirectional drive seat 03A, and be coaxially connected with one-directional rotation axle 05, and one-directional rotation axle 05 is bearing on bearing block 07, unidirectional roll 06 and one-way wheel 08 are coaxially connected with one-directional rotation axle 05 respectively, as the executive item of one-way movement, first one-way clutch mechanism 03 and the second one-way clutch mechanism 04 are installed on one-directional rotation axle 05.Unidirectional drive seat 03A is provided with eccentric shaft, and for installing lever driven end hinged 02, the eccentric shaft that unidirectional drive seat 03A is provided with is eccentric with the hole of installing one-way clutch mechanism 03.
in the present embodiment, above-mentioned unidirectional roll 06 and one-way wheel 08 are coaxially connected respectively by key and one-directional rotation axle 05.
in the present embodiment, above-mentioned fulcrum adjusting screw(rod) 01 forms worm drive pair with fulcrum adjustment seat 13, balance pivot 12 can with fulcrum adjustment seat 13 rectilinear motion, thus the position of adjustable fulcrum 12 can be regulated, change lever ratio, change the stroke of driven end hinged 02 when drive end 09 stroke is constant.
in the present embodiment, above-mentioned first one-way clutch mechanism 3 is contrary with the non-return direction of the second one-way clutch mechanism 4, wherein the first one-way clutch 03 is as driver, and its non-return direction (operative orientation) and one-directional rotation axle 5, executive item unidirectional roll 06 are identical with the rotation direction of one-way wheel 08; Second one-way clutch 04 is as backstop, and non-resistance on one-directional rotation axle 5 operative orientation, but provide non-return when the first one-way clutch 03 backhaul, prevents one-directional rotation axle 05 from reversing.Above-mentioned first one-way clutch mechanism 03 and the second one-way clutch mechanism are ratchet/detent mechanisms, or sour jujube bar/detent mechanism, or one-way clutch, or unilateral bearing, or freewheel clutch etc.; The unidirectional drive power (or moment of torsion) of first one-way clutch mechanism 03 needs ensure to drive driven end normally to run; The unidirectional drive power (or moment of torsion) of second one-way clutch mechanism 4 needs ensure to prevent driven end inverted running.
in the present embodiment, above-mentioned first one-way clutch mechanism 3 and the second one-way clutch mechanism are ratchet/detent mechanisms, or sour jujube bar/detent mechanism, or one-way clutch, or unilateral bearing, or freewheel clutch etc.; The unidirectional drive power (or moment of torsion) of first one-way clutch mechanism 03 needs ensure to drive driven end normally to run; The unidirectional drive power (or moment of torsion) of second one-way clutch mechanism 04 needs ensure to prevent driven end inverted running.
in the present embodiment, above-mentioned adjustable fulcrum 12, lever driven end hinged 02 and lever drive end hinged 11 adopts rolling bearing or sliding bearing, should be able to flexible rotating.
in the present embodiment, above-mentioned adjustable fulcrum 12 and lever driven end hinged 02 are installed in the chute set by lever 10, adjustable fulcrum 12 and adopt matched in clearance respectively between lever driven end hinged 02 and chute, with ensure while ensureing transmission accuracy fulcrum can in chute easy slide.
in the present embodiment, above-mentioned lever 10 is orthoscopic levers, or plane or space curve lever.
in the present embodiment, the motion of above-mentioned drive end actuator 09 and lever drive end hinged 11 is planar reciprocatings, or space curve moves back and forth; Above-mentioned planar reciprocating is that plane and straight line moves back and forth or plane curve moves back and forth.
in the present embodiment, the motion of above-mentioned lever driven end hinged 02 is one-way movement, or moves back and forth; The movement locus of above-mentioned lever driven end hinged 02 is straight line, or plane or space curve (as circular motion, rotation etc.); The direction of motion contrary (drive end and driven end lay respectively at balance pivot both sides) of above-mentioned drive end and driven end, or identical (drive end and driven end are positioned at balance pivot the same side).
in the present embodiment, the present invention solves in high speed (blanching color bar inker print frequency is more than 500 beats/min) even ultrahigh speed (blanching color bar inker print frequency is more than 800 beats/min), do not increase again the volume of (even can also reduce) mechanism and cost (as directly adopted the drive source of action as colour band of printhead, do not increase colour band drive source in addition), reduce interference effect and vibration, noise, extend parts life-span, this mechanism principle, structure should can be applicable to other similar application simultaneously.
in the present embodiment, the leverage of adjustable fulcrum position of the present invention.When initial lever ratio is i=a/b, after adjustment (adjusting) lever position of the fulcrum, lever ratio becomes i '=a '/b ', thus can realize when drive end movement travel (displacement of the lines or angular displacement) is fixing, the movement travel (displacement of the lines or angular displacement) of driven end can step-less adjustment change.This mechanism meets theory of mechanics, and after balance pivot position adjustments is fixed well, when drive end motion is determined, the action of each execution unit is determined (mechanism freedom is 1), does not produce any interference or uncertain action; This mechanism's parts material, manufacturing condition and technique easily obtain, and can not cause too high manufacturing cost.
mechanism of the present invention meets theory of mechanics, and when drive end motion (stroke, speed) is determined, the action (stroke, speed) of each execution unit is determined (mechanism freedom is 1), does not produce any interference or uncertain action; This mechanism's parts material, manufacturing condition and technique easily obtain, and can not cause too high manufacturing cost.
mechanism principle of the present invention is applied to (MFP50 and MFP60 blanching color bar inker) after on blanching color bar inker, directly adopts the reciprocating motion of printhead as the power source of colour band unidirectional drive, following effect can be obtained:
1) obtain 2 ~ 24mm infinitely variable colour band and drive step pitch;
2) maximum operating frequency reaches 1200 beats/min;
3) under the print frequency more than 1000 beats/min, ± the step pitch of the colour band accurately control accuracy of 0.5mm is obtained;
4) exceeded 2500 hours the service life (under 600 beats/min of speed) of parts to damage not yet;
5) almost friction and noise, the also impact (this mechanism is without automatically controlled) of interference-free signal when this mechanism runs.
6) with 1 volume 100m length colour band, each print length 6mm counts, often roll up colour band number of copies and never adopt more than 11000 times that rise to MFP50 and the MFP60 blanching color bar inker adopting mechanism of the present invention for 5000 ~ 6000 of mechanism of the present invention times, colour band consumed cost reduces by more than 40%.
Claims (10)
1. the one-way drive mechanism of a stepless regulation stroke, it is characterized in that the leverage and the one-way drive mechanism that include adjustable fulcrum position, adjustable fulcrum position leverage includes fulcrum adjusting screw(rod), lever driven end is hinged, drive end actuator, lever, lever drive end are hinged, adjustable fulcrum, fulcrum adjustment seat, one-way drive mechanism includes unidirectional drive seat, first one-way clutch mechanism, second one-way clutch mechanism, one-directional rotation axle, unidirectional roll, bearing block, one-way wheel, wherein lever is installed on adjustable fulcrum, adjustable fulcrum is bearing in fulcrum adjustment seat, fulcrum adjustment seat is equiped with the fulcrum adjusting screw(rod) of the position that can regulate adjustable fulcrum, the hinged one end being installed in lever of lever drive end, slot fit on the hinged eccentric shaft being installed in unidirectional drive seat of lever driven end and in the other end and lever of lever, drive end actuator be installed in lever drive end hinged on, first one-way clutch mechanism is arranged in the hole of unidirectional drive seat, and be coaxially connected with one-directional rotation axle, and one-directional rotation axle is bearing on bearing block, unidirectional roll and one-way wheel are coaxially connected with one-directional rotation axle respectively, as the executive item of one-way movement, first one-way clutch mechanism and the second one-way clutch mechanism are installed in on one-directional rotation axle.
2. the one-way drive mechanism of stepless regulation stroke according to claim 1, is characterized in that above-mentioned unidirectional roll and one-way wheel are coaxially connected respectively by key and one-directional rotation axle.
3. the one-way drive mechanism of stepless regulation stroke according to claim 1, it is characterized in that above-mentioned fulcrum adjusting screw(rod) and fulcrum regulate and form worm drive pair, balance pivot can with fulcrum adjustment seat rectilinear motion, thus the position of adjustable fulcrum can be regulated, change lever ratio, change the hinged stroke of driven end when drive end stroke is constant.
4. the one-way drive mechanism of stepless regulation stroke according to claim 1, it is characterized in that above-mentioned first one-way clutch mechanism is contrary with the non-return direction of the second one-way clutch mechanism, wherein the first one-way clutch is as driver, and its non-return direction and one-directional rotation axle, executive item unidirectional roll are identical with the rotation direction of one-way wheel; Second one-way clutch is as backstop, and non-resistance on one-directional rotation axle operative orientation, but provide non-return when the first one-way clutch 3 backhaul, prevents one-directional rotation axle from reversing.
5. the one-way drive mechanism of stepless regulation stroke according to claim 4, it is characterized in that above-mentioned first one-way clutch mechanism and the second one-way clutch mechanism are ratchet/detent mechanisms, or sour jujube bar/detent mechanism, or one-way clutch, or unilateral bearing, or freewheel clutch; The unidirectional drive power of first one-way clutch mechanism 3 needs ensure to drive driven end normally to run; The unidirectional drive power of second one-way clutch mechanism 4 needs ensure to prevent driven end inverted running.
6. the one-way drive mechanism of the stepless regulation stroke according to any one of claim 1 to 5, is characterized in that the hinged and hinged employing rolling bearing of lever drive end of above-mentioned adjustable fulcrum, lever driven end or sliding bearing.
7. the one-way drive mechanism of stepless regulation stroke according to claim 6, it is characterized in that in above-mentioned adjustable fulcrum and the hinged chute be installed in set by lever of lever driven end, adjustable fulcrum and lever driven end is hinged and adopt matched in clearance respectively between chute.
8. the one-way drive mechanism of stepless regulation stroke according to claim 7, is characterized in that above-mentioned lever is orthoscopic lever, or plane or space curve lever.
9. the one-way drive mechanism of stepless regulation stroke according to claim 8, it is characterized in that above-mentioned drive end actuator and the hinged motion of lever drive end are planar reciprocatings, or space curve moves back and forth; Above-mentioned planar reciprocating is that plane and straight line moves back and forth or plane curve moves back and forth.
10. the one-way drive mechanism of stepless regulation stroke according to claim 9, is characterized in that the hinged motion of above-mentioned lever driven end is one-way movement, or moves back and forth; The movement locus of above-mentioned lever driven end hinged 2 is straight lines, or plane or space curve; The direction of motion of above-mentioned drive end and driven end is contrary, or identical.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410537176.0A CN104339896B (en) | 2014-10-13 | 2014-10-13 | A kind of one-way drive mechanism of stepless regulation stroke |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410537176.0A CN104339896B (en) | 2014-10-13 | 2014-10-13 | A kind of one-way drive mechanism of stepless regulation stroke |
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| CN104339896A true CN104339896A (en) | 2015-02-11 |
| CN104339896B CN104339896B (en) | 2017-10-10 |
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| CN201410537176.0A Active CN104339896B (en) | 2014-10-13 | 2014-10-13 | A kind of one-way drive mechanism of stepless regulation stroke |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105269400A (en) * | 2015-11-25 | 2016-01-27 | 王辉 | Manual mechanical type index plate |
| CN112249743A (en) * | 2020-12-16 | 2021-01-22 | 佛山市金页盈信智能机械有限公司 | Paper delivery device |
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| CN2890505Y (en) * | 2005-12-26 | 2007-04-18 | 福州大学 | Pulse type stepless transmission with low pulse degree |
| JP2009168245A (en) * | 2008-01-17 | 2009-07-30 | Zf Friedrichshafen Ag | Continuously variable transmission device for printing machine |
| CN201909001U (en) * | 2010-12-14 | 2011-07-27 | 曹臻 | Stepless speed change device |
| US20130199444A1 (en) * | 2010-07-13 | 2013-08-08 | Voxeljet Technology Gmbh | Apparatus for producing three-dimensional models by means of a layer build up technique |
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| CN1220946A (en) * | 1997-12-08 | 1999-06-30 | 三星电子株式会社 | Automatic sheet feeding device of printer |
| CN1828079A (en) * | 2005-02-18 | 2006-09-06 | 先锋株式会社 | Anti-reverse mechanism of rotary body |
| CN2890505Y (en) * | 2005-12-26 | 2007-04-18 | 福州大学 | Pulse type stepless transmission with low pulse degree |
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| CN105269400A (en) * | 2015-11-25 | 2016-01-27 | 王辉 | Manual mechanical type index plate |
| CN112249743A (en) * | 2020-12-16 | 2021-01-22 | 佛山市金页盈信智能机械有限公司 | Paper delivery device |
| CN112249743B (en) * | 2020-12-16 | 2021-06-08 | 佛山市金页盈信智能机械有限公司 | Paper delivery device |
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| CN104339896B (en) | 2017-10-10 |
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