CN102285229B - Positioning device of ink-jetting head - Google Patents
Positioning device of ink-jetting head Download PDFInfo
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- CN102285229B CN102285229B CN 201110176849 CN201110176849A CN102285229B CN 102285229 B CN102285229 B CN 102285229B CN 201110176849 CN201110176849 CN 201110176849 CN 201110176849 A CN201110176849 A CN 201110176849A CN 102285229 B CN102285229 B CN 102285229B
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- ink gun
- piezoelectric element
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- ink
- load carrier
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Abstract
The invention relates to a positioning device of an ink-jetting head, which uses a piezoelectric element between the ink-jetting head and a bearing mechanism for adjusting the position of the ink-jetting head. A sensor is used for sensing a feedback signal generated by deformation of the piezoelectric element and obtaining a position state of the ink-jetting head; a control chip calculates a displacement amount of the ink-jetting head needed to be compensated by using the feedback signal and converts the displacement amount into a piezoelectric signal; the piezoelectric signal is transmitted to an actuator through the transmission path; the actuator applies a voltage required by the piezoelectric element to generate a required deformation amount; and then the aim of fine-tuning the ink-jetting head is reached and the printing quality of the ink-jetting head is improved.
Description
Present patent application is: the dividing an application of [application number: 200810096291.3 applyings date: on May 8th, 2008 denomination of invention: the positioner of ink gun and method].
Technical field
The present invention relates to the ink gun of printer, the positioner of the ink gun of especially relevant printer.
Background technology
There are the various ink guns that make printer to be positioned the technology of bogey, the ink gun positioning carrier of the printer that discloses of No. the 439664th, TaiWan, China patent for example, its device includes: a load bearing seat mechanism, include a location mechanism, detent mechanism has at least one keeper, keeper is outwardly, and the location of at least two directions can be provided; And an ink gun, being placed in load bearing seat mechanism, mechanism provides ink gun to support by load bearing seat, and ink gun includes at least one location division, and the location division inwardly concaves, and keeper withstands the location division and combines closely; By locating the some contact of upper precision, can locate simultaneously X, the Y of ink gun, the precision of Z three directions, make being placed in load bearing seat that ink gun can be infallible, reach good locating effect.If but ink gun is difficult to be adjusted to correct position when having departed from the position of location.
Play that edge will be paid special attention to the flatness of plane of orientation from the location of ink gun and to the relative position of integral printer based on above-mentioned problem, otherwise can cause ink gun at X, Y, Z rotating shaft and move the inaccurate situation in axle location, and making image printing produce crooked situation.
See also Figure 1A, Figure 1B, Fig. 2 A, Fig. 2 B, shown in Figure 3.Some piezoelectric 10, natural crystal crystal such as tourmaline or quartz, when its two ends under tension, as shown in Figure 1A or be under pressure, as shown in 1B, its two ends can measure small voltage because of elongation or during contraction change on the surface at its two ends, and can produce the effect of voltage, be called direct piezoelectric effect.Anti-, as shown in Fig. 2 A, Fig. 2 B, when the two ends of piezoelectric 10 added the voltage of different directions, the variation that can cause its two ends elongation or shrink was called inverse piezoelectric effect.As shown in Figure 3, when applying the two ends of an alternating voltage at piezoelectric 10, because voltage is the positive and negative form that replaces, can makes piezoelectric 10 present elongation and shortly constantly alternately change with receiving.Ceramic material can be made into various shapes because easily making, and its piezoelectric property can be done multifarious variation with the difference of its shape, the present main flow of making piezoelectric element that become.
In addition, in the application of piezoelectric, disclosed a kind of Apparatus and method for that one ink-jet printer is provided and drives an ink-jet printer write head for suppressing subsidiary ink droplet in China's patent announcement number " 400282 " number patent.For each ink chamber corresponding to each nozzle provides two piezoelectric elements.By apply one for the driving signal of ink droplet ejection to one of this piezoelectric element, and apply when ejection one ink droplet one in order to the driving signal of suppressing subsidiary ink droplet to another piezoelectric element, to adjust the time distribution of this piezo-electric element displacement.The aux. pressure superposition that the displacement of a rear piezoelectric element produces is on the ejection pressure that the displacement of last piezoelectric element produces.Stage is cut off the generation of tail end and the subsidiary ink droplet of compacting of ink droplet in early days.
Although in above-mentioned data, all may relate to the subject under discussion that relevant printer location or ink-jet quality promote, but do not give any teaching, or give any motivation of inventor and improve ink-jet printer in print procedure, when meeting with paper deflection (Skew), the action that how to utilize piezoelectric element to finely tune improves the not accurate unsettled disappearance of the print quality that causes in ink gun location.
Summary of the invention
For the positioner of the existing ink gun of further improvement, and the present invention is proposed.
Main purpose of the present invention is to provide a kind of positioner of ink gun, can improve the ink gun location inaccurate and cause the unsettled situation of print quality.
Another object of the present invention is to provide a kind of positioner of ink gun, does not need too highly for the required precision of the plane of orientation of load carrier, can reduce the manufacturing of load carrier and the cost of QC.
The positioner of ink gun of the present invention comprises:
One load carrier is in order to carry this ink gun;
At least one piezoelectric element is in conjunction with this load carrier, in order to against this ink gun;
One control module couples this piezoelectric element, in order to apply a voltage to this piezoelectric element, makes the distortion of this piezoelectric element and adjusts the position of this ink gun.
The localization method of ink gun of the present invention is to utilize piezoelectric element between ink gun and load carrier to adjust the position of this ink gun, comprises the steps:
(a) control signal makes an actuator bestow this piezoelectric element voltage and makes this piezoelectric element distortion, and adjusts the position of this ink gun;
(b) print action;
(c) check whether this ink gun completes the location, if this ink gun has been completed the location, stop the positioning operation of this ink gun; If this ink gun is not completed the location, continue again to make this actuator to bestow this piezoelectric element voltage and make this piezoelectric element distortion, and adjust the position of this ink gun, then print action, then check whether this ink gun completes the location.
Other purpose of the present invention, effect see also graphic and embodiment, are described in detail as follows.
Description of drawings
When Figure 1A was the two ends under tension of piezoelectric, the surface at its two ends can measure the schematic diagram of small voltage;
Figure 1B is the two ends of piezoelectric when being under pressure, and the surface at its two ends can measure the schematic diagram of small voltage;
Fig. 2 A is the two ends of piezoelectric when adding voltage, the schematic diagram of its two ends elongation;
Fig. 2 B is the two ends of piezoelectric when adding voltage, the schematic diagram of its two ends contracting contracting;
Fig. 3 is the two ends of piezoelectric when adding alternating voltage, and its two ends present elongation and receive the short schematic diagram that constantly alternately changes;
Fig. 4 is the functional structure block schematic diagram of the positioner of ink gun of the present invention;
Fig. 5 is that the positioner of ink gun of the present invention is in conjunction with the schematic diagram of soft arranging wire;
Fig. 6 is that the positioner of ink gun of the present invention is in conjunction with the enlarged diagram of the part-structure of soft arranging wire;
Fig. 7 A is the schematic diagram that ink gun of the present invention and print paper present an angular error that tilts;
Fig. 7 B is the schematic diagram that ink gun of the present invention and print paper present nonangular angular error;
Fig. 8 is that piezoelectric element of the present invention is against the schematic diagram of ink gun spray;
Fig. 9 is the flow chart of the localization method of ink gun of the present invention.
[main element symbol description]
10 piezoelectric 20 positioners
21 load carrier 211 grooves
22 piezoelectric element 23 control modules
231 control chip 232 analog/digitals and digital/analog converters
233 first buffer 234 effect amplifiers
235 actuator 236 wave filters
237 second buffer 238 sensors
30 ink gun 40 paper
51 soft arranging wire 52 after-frames
53 guide rods
(a), (b), (c), (d), (e), (f) are respectively the numbering of each step
The specific embodiment
See also shown in Fig. 4,5,6.The positioner 20 of ink gun of the present invention comprises that load carrier 21, piezoelectric element 22, control module 23 form.Load carrier 21 is provided with at least one groove 211 with accommodating and in conjunction with piezoelectric element 22.Piezoelectric element 22 is resisted against the lower end of ink gun 30.Control module 23 comprises that control chip 231, analog/digital and digital/analog converter 232, the first buffer 233, power amplifier 234, actuator 235, wave filter 236, the second buffer 237 and sensor 238 form.Control chip 231 can be the CPU (CPU) of printer, as numbers 8051 or PIC (Programmable Interrupt Controller) chip etc.Piezoelectric element 22 and control module 23 that the present invention uses can be general known person.
But sensor 238 sensing piezoelectric element 22 two ends produce corresponding voltage because of the length variations state, after the voltage signal of this simulation transfers to wave filter 236 filtered noises via the second buffer 237, transfer to analog/digital and digital/analog converter 232 be converted to the numeral voltage signal transfer to control chip 231; Therefore can learn by the voltage at sensor 238 sensing piezoelectric element 22 two ends the state that elongates or shortens of piezoelectric element 22.Piezoelectric element 22 can be ceramic material and makes.
What must be illustrated is, in the present embodiment, this wave filter can be refused wave filter BSF for a low pass filter LPF or high-pass filter HPF or bandpass filter BPF or band.
See also Fig. 5, shown in Figure 6.Load carrier 21 of the present invention is in conjunction with soft arranging wire 51, and soft arranging wire 51 supplies transmission of control signals to ink gun 30.Soft arranging wire 51 is electrically connected to piezoelectric element 22, and piezoelectric element 22 sees through soft arranging wire 51 and transmits voltage signal.Piezoelectric element 22 also can be fixed on load carrier 21 by viscose glue.Load carrier 21 is held movable in conjunction with after-frame 52 afterwards, and load carrier 21 can move around along guide rod 53, drives ink gun 30 and prints on paper 40.
See also Fig. 4, Fig. 7 A, Fig. 7 B, shown in Figure 8.if ink gun 30 location are inaccurate, cause the paper 40 of normal paper feed to present an angular error that tilts with ink gun 30, as shown in Fig. 7 A, can further make control chip 231 send the control signal of numeral, after analog/digital and digital/analog converter 232 convert analog signal to, transfer to through the first buffer 233 again and transfer to actuator 235 after power amplifier 234 amplifies, by actuator 235, a voltage is imposed on the two ends of piezoelectric element 22, making wherein, a piezoelectric element 22 extends for example shown in Fig. 7 B, can not produce the angular error of inclination and make between ink gun 30 and paper 40.As shown in Figure 8, can pass through the distortion of the piezoelectric element 22 of ink gun 30 bottoms and bottom side, change the distance between ink gun 30 and load carrier, and then adjust the rotating shaft (Z direction) of ink gun 30 and the relative position of offset axis (Y-direction), just can automatically ink gun 30 be positioned to correct position.Piezoelectric element 22 by being located at diverse location is capable of regulating ink gun 30 other axial relative positions also.
The feedback signal that the present invention can the distortion by sensor 238 sensing piezoelectrics 22 produces, or detect by another detector the signal that the address of paper produces, and learn the location status of ink gun 30.Make control chip 231 utilize these calculated signals to go out the displacement that ink gun 30 needs compensation, and convert this displacement to voltage signal, via above-mentioned transmission path to actuator 235, make actuator 235 impose on piezoelectric element 22 required voltages and produce required deflection, reaching the purpose of fine setting ink gun 30, and promote the print quality of ink gun 30.
See also shown in Figure 9.The localization method of ink gun of the present invention is the position person who utilizes the piezoelectric element adjustment ink gun between ink gun and load carrier, comprises the steps:
Utilize a sensor to detect ink gun and whether be positioned at the tram and export a detection signal, for example make sensor detect the length of the piezoelectric element between ink gun and load carrier and send a voltage signal;
Utilize a control chip to judge whether this detection signal is normal, judge namely whether this ink gun is positioned at the tram, be positioned at the out of position if this detection signal represents this ink gun extremely, control chip is sent a control signal, enters step (c); If this detection signal normally represents this ink gun and is positioned at the tram, enter step (d);
One control signal makes an actuator bestow piezoelectric element voltage and makes the piezoelectric element distortion, and adjusts the position of ink gun;
Print action;
Check whether ink gun completes the location, whether the lines of namely checking printing are crooked, if ink gun is completed the location, the lines of namely printing are without crooked situation, stop the positioning operation (f) of ink gun, if ink gun is not completed the location, the lines of namely printing still have crooked situation, enter step (c) again.
Above-mentionedly check whether ink gun is completed the mode of location and can be checked whether the lines of printing are crooked with artificial mode, or the lines that utilize detector to detect to print are whether crooked and send corresponding signal.
The localization method of ink gun of the present invention is to utilize the positioner of the invention described above ink gun to implement, and relevant technology contents is repeated description no longer.
The positioner of ink gun of the present invention can improve ink gun and locates inaccurate and cause the unsettled situation of print quality.The positioner of ink gun of the present invention, can optionally utilize the distortion of piezoelectric element to adjust the rotating shaft (Z direction) of ink gun and the relative position of offset axis (Y-direction), automatically ink gun is positioned to correct position, therefore do not need too highly for the required precision of the plane of orientation of load carrier, can reduce the manufacturing of load carrier and the cost of QC.
The above record, only for utilizing the embodiment of the technology of the present invention content, modification, variation that any those skilled in the art use the present invention to do all belong to the scope of the claims that the present invention advocates, disclose and be not limited to embodiment.
Claims (10)
1. the positioner of an ink gun, is characterized in that, comprising:
One load carrier is in order to carry this ink gun;
At least one piezoelectric element is in conjunction with this load carrier, in order to against this ink gun;
One control module couples this piezoelectric element, in order to apply a voltage to this piezoelectric element, makes the distortion of this piezoelectric element and adjusts the position of this ink gun.
2. the positioner of ink gun as claimed in claim 1, is characterized in that, this load carrier is in conjunction with two these piezoelectric elements, and these two these piezoelectric elements are in order to be resisted against respectively the lower end of this ink gun.
3. the positioner of ink gun as claimed in claim 1, is characterized in that, this load carrier is in conjunction with a soft arranging wire, and this soft arranging wire is electrically connected to this piezoelectric element, and this soft arranging wire is in order to the transmission voltage signal.
4. the positioner of ink gun as claimed in claim 2, is characterized in that, this load carrier is in conjunction with a soft arranging wire, and this soft arranging wire is electrically connected to this piezoelectric element, and this soft arranging wire is in order to the transmission voltage signal.
5. the positioner of ink gun as claimed in claim 3, is characterized in that, this soft arranging wire supplies transmission of control signals to this ink gun.
6. the positioner of ink gun as claimed in claim 4, is characterized in that, this piezoelectric element is that ceramic material is made.
7. the positioner of ink gun as claimed in claim 5, is characterized in that, this load carrier is provided with groove with accommodating and fix this piezoelectric element.
8. as the positioner of claim 1,2,3,4,5,6 or 7 described ink guns, it is characterized in that, this control module comprises control chip, analog/digital and digital/analog converter, the first buffer, power amplifier and actuator; This control chip is in order to send the control signal of numeral, after this analog/digital and digital/analog converter convert analog signal to, transfer to through this first buffer again and transfer to this actuator after this power amplifier amplifies, by this actuator, one voltage is imposed on this piezoelectric element, make this piezoelectric element distortion.
9. the positioner of ink gun as claimed in claim 8, is characterized in that, this control module further comprises wave filter, the second buffer and sensor; This sensor produces corresponding voltage signal in order to the deformation state of this piezoelectric element of sensing, after the voltage signal of this simulation transfers to this wave filter filtered noise via this second buffer, transfer to this analog/digital and digital/analog converter be converted to the numeral voltage signal transfer to this control chip, learn the deformation state of this piezoelectric element by the voltage signal of this this piezoelectric element of sensor sensing.
10. the positioner of ink gun as claimed in claim 9, is characterized in that, this wave filter be low pass filter, high-pass filter, bandpass filter or band refuse wave filter one of them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110176849 CN102285229B (en) | 2008-05-08 | 2008-05-08 | Positioning device of ink-jetting head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110176849 CN102285229B (en) | 2008-05-08 | 2008-05-08 | Positioning device of ink-jetting head |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100962913A Division CN101574868B (en) | 2008-05-08 | 2008-05-08 | Positioning method of ink head |
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| Publication Number | Publication Date |
|---|---|
| CN102285229A CN102285229A (en) | 2011-12-21 |
| CN102285229B true CN102285229B (en) | 2013-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110176849 Expired - Fee Related CN102285229B (en) | 2008-05-08 | 2008-05-08 | Positioning device of ink-jetting head |
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| CN (1) | CN102285229B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108944049B (en) * | 2018-06-29 | 2019-10-29 | 湖北威思顿智能科技有限公司 | A kind of spray head regulating device for spray drawing machine print unit |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1223201A (en) * | 1997-11-28 | 1999-07-21 | 索尼公司 | Apparatus and method for driving recording head for ink-jet printer |
| CN1280917A (en) * | 1999-07-19 | 2001-01-24 | 日本电气株式会社 | Ink jet recording head and its making method and method of ejecting ink drops |
| EP1080929A2 (en) * | 1999-09-03 | 2001-03-07 | Canon Kabushiki Kaisha | Carriage, liquid ejection head, printer, head inserting method and head positioning method |
| TW439664U (en) * | 1999-10-08 | 2001-06-07 | Ind Tech Res Inst | Positioning carrier for ink jet printhead of printer |
| EP1418054A1 (en) * | 2002-11-07 | 2004-05-12 | Océ-Technologies B.V. | Print carriage assembly and method for mounting a print head holder thereon |
| CN1504343A (en) * | 2002-12-03 | 2004-06-16 | 铼宝科技股份有限公司 | Positioning method of ink jet printing equipment and ink-jet printing head |
| TW200604591A (en) * | 2005-08-26 | 2006-02-01 | Univ Nat Central | Method and structure producing color ink array head |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10057062C1 (en) * | 2000-11-17 | 2002-05-23 | Koenig & Bauer Ag | Printing head alignment method uses variation in printing head firing points and relative displacement of at least one printing head |
-
2008
- 2008-05-08 CN CN 201110176849 patent/CN102285229B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1223201A (en) * | 1997-11-28 | 1999-07-21 | 索尼公司 | Apparatus and method for driving recording head for ink-jet printer |
| CN1280917A (en) * | 1999-07-19 | 2001-01-24 | 日本电气株式会社 | Ink jet recording head and its making method and method of ejecting ink drops |
| EP1080929A2 (en) * | 1999-09-03 | 2001-03-07 | Canon Kabushiki Kaisha | Carriage, liquid ejection head, printer, head inserting method and head positioning method |
| TW439664U (en) * | 1999-10-08 | 2001-06-07 | Ind Tech Res Inst | Positioning carrier for ink jet printhead of printer |
| EP1418054A1 (en) * | 2002-11-07 | 2004-05-12 | Océ-Technologies B.V. | Print carriage assembly and method for mounting a print head holder thereon |
| CN1504343A (en) * | 2002-12-03 | 2004-06-16 | 铼宝科技股份有限公司 | Positioning method of ink jet printing equipment and ink-jet printing head |
| TW200604591A (en) * | 2005-08-26 | 2006-02-01 | Univ Nat Central | Method and structure producing color ink array head |
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| CN102285229A (en) | 2011-12-21 |
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