CN103499276A - Detection system, detection method and adjustment method for uniformity of cutting edge of printing scraper - Google Patents
Detection system, detection method and adjustment method for uniformity of cutting edge of printing scraper Download PDFInfo
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- CN103499276A CN103499276A CN201310475547.2A CN201310475547A CN103499276A CN 103499276 A CN103499276 A CN 103499276A CN 201310475547 A CN201310475547 A CN 201310475547A CN 103499276 A CN103499276 A CN 103499276A
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- detection system
- force sensing
- measuring unit
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Abstract
The invention provides a detection system, a detection method and an adjustment method for the uniformity of a cutting edge of a printing scraper. The detection system comprises three hardware units, namely an equipment base, a clamping downward-pressing unit and a measuring unit; a precision galvanometer and a force sensing resistor form a circuit system group; a different point of the uniformity of the scraper cutting edge is visually measured by applying the pressure and adopting a current data difference mode; the measured difference point is subjected to data processing and positioning to obtain the corresponding uniformity and adjustment strategy.
Description
Technical field
The present invention relates to a kind of printing scraper cutting edge homogeneity detection system, detection method and method of adjustment, relate to all use silk-screen plates (through printing forme-Screen Mask) materials such as slurry, ink, printing ink, paint, all kinds of glue are carried out to justifying printing or local silk-screen, including but not limited to printing manufacture, other industry (weaving, publication etc.) the printing manufacture field of each effective efficiency layer of PDP display (PDP).
Background technology
In printing industry, the most frequently used mode is to go above the mode of use serigraphy is transferred to base material by material to be printed (materials such as slurry, ink, printing ink, paint, all kinds of glue), the instrument used is exactly scraper, and the quality of scraper particularly cutting edge homogeneity has very important impact to printing quality.
At present printing industry is for the homogeneity monitoring of printing scraper, in the state of the strict monitoring of high threshold or basic forgo data monitoring:
1, use laser detection scraper homogeneity equipment strictly to monitor
The laser equipment measure of precision is high but purposes is seriously single, and detection speed is slow and, by Japan, Korea S manufacturer price fixing, general medium-sized and small enterprises can't be born equipment purchasing and daily servicing expense.
The patent No. 200910017235, patent name " a kind of scraper planeness detection system " have adopted above-mentioned this method, this invention provides a kind of detection system and method for utilizing the splitter principle of interference to detect scraper planeness, this scraper planeness detection system comprises: light source (laser instrument) system, the beam shaping system, sensing system; Light-source system is monochromatic He-Ne laser instrument; The beam shaping system is comprised of diaphragm, semi-transparent semi-reflecting lens; Sensing system consists of standard jig and CCD pick-up unit, can fast, accurately, the nothing wearing and tearing detect scraper workplace flatness.
2, forgo data monitoring, by the guestimate of non-quantification means, or direct subjective judgement
Employing has the mode of experience employee subjective judgement to estimate the scraper homogeneity;
Use impact paper (or claiming pressure-sensitive paper), the pressure pressed down according to each position of scraper varies in size, the qualitative judgement thereby impact paper is of different shades.
Most of medium-sized and small enterprises, based on self financial resources, adopt above-mentioned second method substantially, and this important parameter of scraper homogeneity in slave mode not, has hidden trouble for product quality substantially.Along with the development of printing technology in electron trade, the homogeneity of printing itself has been proposed to requirements at the higher level, need a kind of new technology, new invention to make up this sheet blank.
Compare the present invention, " a kind of scraper planeness detection system " used laser system with high costs, optical system and sensing system, system acquisition cost is estimated as of the present invention more than 50 times, system daily servicing expense is estimated as of the present invention more than 10 times, need to carry out equipment before detection and move in advance, it is of the present invention more than 2 times estimating detection time.In industrialization and scale application facet, the present invention more easily realizes.
Summary of the invention
The technical problem to be solved in the present invention be to provide a kind of cost lower, can be fast, accurately, detect scraper workplace flatness and provide without wearing and tearing ground and adjust tactful printing scraper cutting edge homogeneity detection system, detection method and method of adjustment.In the present invention program, scraper cutting edge lack of homogeneity dissimilarity is measured and located and draw corresponding homogeneity and adjust strategy after the data processing with the mode of current data difference is directly perceived by exerting pressure.
The technical solution used in the present invention is as follows: a kind of printing scraper cutting edge homogeneity detection system is characterized in that: comprise the equipment base for placing measuring unit and press down unit for the clamping that clamps product to be measured and carry out steadily evenly pressing down; Described measuring unit comprises the force sensing resistance that forms loop with power supply, and described force sensing resistance is evenly arranged in measuring unit; Described clamping presses down unit and comprises clamping part and pressing down section.
As preferably, described pressing down section is that spiral-fluid pressure linkage mode presses down parts.
As preferably, also comprise the connecting material be interval between each force sensing resistance.
As preferably, described connecting material is identical with the elastic compression coefficient of force sensing resistance.
As preferably, the impedance variation coefficient k ﹤ 1 of described force sensing resistance.
As preferably, described equipment base is marble or the rigid table top of stainless steel.
Uniformity detecting method based on above-mentioned homogeneity detection system, concrete grammar is: exert pressure to pressing down parts, the product to be measured of clamping part clamping are depressed on measuring unit, observe each current value I of measuring unit
1, I
2..., I
nvariation, until impressed pressure F reaches the preset parameter value, record now each current value I
1, I
2..., I
n, according to formula U
n={ 1-[(I
max– I
min)/2]/I
average* 100% calculates the cutting edge homogeneity of product to be measured.
Uniformity adjusting method based on uniformity detecting method, concrete grammar is: described current value upper specification limit is I
average* (1+U
n/ 2), under the current value specification, be limited to I
average* (1-U
n/ 2); Each measured current value I
1, I
2..., I
nin, if higher than upper specification limit or lower than the specification lower limit, need finishing.
Compared with prior art, the invention has the beneficial effects as follows: improved print production efficiency and press quality; Can be to producing core tool (scraper) datumization management and control; Visual data and microphenomenon have been realized to combination by the present invention program; Effectively prevented manufacture process abnormal, but express analysis reply after abnormal the generation.
The accompanying drawing explanation
Fig. 1 is the wherein system architecture schematic diagram of an embodiment of the present invention.
The structural principle schematic diagram that Fig. 2 is middle measuring unit embodiment illustrated in fig. 1.
The electrical block diagram that Fig. 3 is measuring unit shown in Fig. 2.
Fig. 4 is schematic diagram before force sensing resistance working mechanism stress deformation.
Fig. 5 is schematic diagram after force sensing resistance working mechanism stress deformation.
Fig. 6 is force sensing resistance impedance operator schematic diagram.
Fig. 7 is cutting edge homogeneity setting range schematic diagram.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Disclosed arbitrary feature in this instructions (comprising any accessory claim, summary and accompanying drawing), unless special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is,, unless special narration, each feature is an example in a series of equivalences or similar characteristics.
In order to monitor scraper cutting edge homogeneity to promote printing quality, the invention provides the inhomogeneity detection system of a kind of fast detecting scraper, detection method and method of adjustment, detect data directly perceived and possess trend analysis, can within a few minutes, complete testing process and evaluation, and cutting edge finishing strategy is provided.
The self-characteristic of theoretical prototype of the present invention based on a kind of special circuit components and parts-force sensing resistance and producing, force sensing resistance resistance value under normal circumstances is assumed to R
0, after applying ambient pressure F, its resistance change is (k/F) R
0(k is force sensing resistance impedance variation coefficient, for the same model product, it is fixed value, it is that example is specifically described that this specific embodiment adopts k<1 material), the change of resistance value has caused the variation of electric current in the system and device circuit, thereby the form datumization with electric current I displays on the precision current meter.By data analysis, in the situation that use same model force sensing resistance, related significant data impressed pressure F, force sensing resistance resistance value R, the precision current meter current value I of this specific embodiment is a certain proportion of linear relationship.According to detected current data I
1, I
2..., I
ndifference analysis, find out the abnormal current data point, correspondence is found out the inhomogeneous place, part of scraper, and judges its pattern, for revising scraper, provides data and theoretical the support.
Success of the present invention will apply ambient pressure, electric current I, scraper homogeneity U
ntriplicity is got up, and by the measurement value, the analysis of data model of device, by this microcosmic of scraper cutting edge homogeneity but typography is belonged to the showing of supplemental characteristic of core, is convenient to the industrialization monitoring and implements.
As shown in Figure 1, a kind of printing scraper cutting edge uniformity detection, comprise the equipment base for placing measuring unit and press down unit for the clamping that clamps product to be measured and carry out steadily evenly pressing down; Described measuring unit comprises the force sensing resistance that forms loop with power supply, and described force sensing resistance is evenly arranged in measuring unit; Described clamping presses down unit and comprises clamping part and pressing down section.
Clamping presses down the unit major function for clamping product to be measured (scraper etc.) and by pressing down section, product to be measured is depressed on measuring unit, and the size of downforce shows that by tensimeter numerical value shows.The clamping part Main Function is high-precision fixing product to be measured, requires itself and equipment base to keep the Hang Du<=0.1mm of Ping be strict with.The core cell that measuring unit is apparatus of the present invention, when test product to be measured applies external force with certain pressure F to test cell, in measuring unit, microcircuit resistance value R changes, thereby causes that current value I changes.According to size and the actual print accuracy requirement of product to be measured, set the measuring unit of respective amount.
Described pressing down section is that accurate spiral-fluid pressure linkage mode presses down the purpose that parts press down to meet stressed uniform and stable.Select different downforce according to different test products to be measured during work, but data corresponding to corresponding pressure F instant playback on tensimeter.
Also comprise the connecting material be interval between each force sensing resistance, be convenient to form measuring unit integral body with force sensing resistance.
Described connecting material is identical with the elastic compression coefficient of force sensing resistance.
The impedance variation coefficient k ﹤ 1 of described force sensing resistance, be convenient to analyze and realize.
As shown in Figures 2 and 3, each effective efficiency unit (being force sensing resistance) connects with parallel way.
Described equipment base is marble or the rigid table top of stainless steel, requires placement level, pedestal upper surface smooth.
As shown in Figure 4, the resistivity of force sensing resistance is ρ, with certain even density, is distributed in measuring unit, in the situation that be not subject to external force, defining this force sensing resistance resistivity is ρ
0.Before the force sensing resistance stress and deformation, A, B, C, D resistivity are identical: ρ
a=ρ
b=ρ
c=ρ
d=ρ
0.The proportional relation of electricalresistivityρ and resistance R, therefore R
a=R
b=R
c=R
d.
As shown in Figure 5, after the measuring unit that force sensing resistance is made in is stressed, be extruded distortion, stressed maximum has the resistivity minimum.According to stressed difference, A, B, C, D resistivity change respectively:
ρ
a=ρ
0remain unchanged, but ρ
b≠ ρ
c≠ ρ
d≠ ρ
a(ρ
0)
And ρ
a(ρ
0)>ρ
b>ρ
c>ρ
dbe R
a(R
0)>R
b>R
c>R
d
The change of resistance value R has caused the variation of current value I in each electronic circuit, on the precision current meter, with precise information, shows:
I = U / R I
A ＜ I
B ＜ I
C ＜ I
D。
As shown in Figure 6, when force sensing resistance, when not exerting pressure state, defining its initial resistance is R
0, after applying external force F, according to the force sensing resistance self-characteristic, resistance value becomes R=(k/F) and R
0, resistance value R and the pressure F that exerts pressure are negative correlation, and along with the increase of the F that exerts pressure, resistance value R constantly reduces, until reach the maximum pressure F that force sensing resistance can bear
limit.According to the force sensing resistance impedance operator, excessive as the F that exerts pressure, exceed F
limitthe time, force sensing resistance is destroyed, and resistance value no longer changes and keeps a fixed value with F.
By I=U/R, R=(k/ F) R
0
Draw I=U * F/(k * R
0), current value I and pressure F that during work, the precision current meter shows are proportionate.
Uniformity detecting method based on above-mentioned homogeneity detection system, concrete grammar is: exert pressure to pressing down parts, the product to be measured of clamping part clamping are depressed on measuring unit, observe each current value I of measuring unit
1, I
2..., I
nvariation, until impressed pressure F reaches the preset parameter value, record now each current value I
1, I
2..., I
n, according to formula U
n={ 1-[(I
max– I
min)/2]/I
average* 100% calculates the cutting edge homogeneity of product to be measured.
I wherein
maxfor I
1, I
2..., I
nmiddle maximal value, I
minfor I
1, I
2..., I
nmiddle minimum value, I
averagefor I
1, I
2..., I
nmean value.
For meeting needs of production, General Requirements U
n>=90%, according to the industry actual needs, can work out harsher or loose requirement.The homogeneity U gone out when actual computation
nmeet specification requirement, scraper cutting edge homogeneity is qualified, does not need to process again; The homogeneity U gone out when actual computation
ndo not meet specification requirement, scraper cutting edge homogeneity is defective, need to process the scraper cutting edge again.
Uniformity adjusting method based on uniformity detecting method, concrete grammar is: described current value upper specification limit is I
average* (1+U
n/ 2), under the current value specification, be limited to I
average* (1-U
n/ 2); Each measured current value I
1, I
2..., I
nin, if higher than upper specification limit or lower than the specification lower limit, need finishing.
As shown in Figure 7, the U to require
n>=90% is example, and it is as follows that the scraper cutting edge is processed the decision analysis method again:
According to I
1, I
2..., I
ndata Comparison, the formulation upper specification limit is I
average* (1+90%/2), be limited to I under specification
average* (1-90%/2), carry out data analysis judgement:
Measurement point № .1, № .2 electric current displayed value I-1, I-2, in specification limit, do not need this place's scraper is adjusted again;
I-3 is less than normal for measurement point № .3 electric current displayed value, illustrates that this actual pressure is less than normal, and scraper has depression (caving in) herein, needs finishing;
I-4 is bigger than normal for measurement point № .4 electric current displayed value, illustrates that this actual pressure is bigger than normal, and scraper has projection (evagination) herein, needs finishing.
The present invention is because of the self-characteristic of force sensing resistance, scraper that can not be very little or very large to hardness carries out uniformity measurement, mainly be applicable to the soft scraper of Shore hardness (Shore) 25A to 90A, determine according to the difference of scraper hardness the size that applies impressed pressure F, usually determine impressed pressure F size (table one-scraper hardness and impressed pressure F parameter reference table, rule of thumb data gather) with reference to the following table partial data.
Table one
When scraper hardness, fixedly the time, be to ensure the measurement data consistance, suggestion is each while measuring, and impressed pressure also keeps steady state value.
Based on the force sensing resistance self-characteristic, when applying external force to certain value, force sensing resistance is destructurized, then resistance no longer changes and keeps fixed value while increasing pressure, and definition emergent pressure now is F
limit, critical resistance is R
limit, while therefore using this device, applied pressure must meet: F<F
limit, pressure F<10kg that in the present invention, suggestion is used.
The present invention can be used for the printed matters such as PDP display, liquid crystal display, weaving, books, and uses goods or the semi-manufacture of printing process in production run.
Claims (9)
1. a printing scraper cutting edge homogeneity detection system, is characterized in that: comprise the equipment base for placing measuring unit and press down unit for the clamping that clamps product to be measured and carry out steadily evenly pressing down; Described measuring unit comprises the force sensing resistance that forms loop with power supply, and described force sensing resistance is evenly arranged in measuring unit; Described clamping presses down unit and comprises clamping part and pressing down section.
2. detection system according to claim 1, it is characterized in that: described pressing down section is that spiral-fluid pressure linkage mode presses down parts.
3. detection system according to claim 1, is characterized in that: also comprise the connecting material be interval between each force sensing resistance.
4. detection system according to claim 3, it is characterized in that: described connecting material is identical with the elastic compression coefficient of force sensing resistance.
5. detection system according to claim 1, is characterized in that: the impedance variation coefficient k ﹤ 1 of described force sensing resistance.
6. detection system according to claim 1, it is characterized in that: described equipment base is marble or the rigid table top of stainless steel.
7. the uniformity detecting method based on the described system of claim 1, the concrete grammar step is: to pressing down the parts F that exerts pressure, the product to be measured of clamping part clamping are depressed on measuring unit, observe each current value I of measuring unit
1, I
2..., I
nvariation, until impressed pressure F reaches the preset parameter value, record now each current value I
1, I
2..., I
n, according to formula U
n={ 1-[(I
max– I
min)/2]/I
average* 100% calculates the cutting edge homogeneity of product to be measured.
8. method according to claim 6, described method step also comprises, described pressure F ﹤ 10kg.
9. the uniformity adjusting method based on the described uniformity detecting method of claim 6, concrete grammar is: described current value upper specification limit is I
average* (1+U
n/ 2), under the current value specification, be limited to I
average* (1-U
n/ 2); Each measured current value I
1, I
2..., I
nin, if higher than upper specification limit or lower than the specification lower limit, need finishing.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108759659A (en) * | 2018-06-06 | 2018-11-06 | 常州信息职业技术学院 | Paint sheet metal component scraper plate test platform control system |
| CN108760103A (en) * | 2018-06-06 | 2018-11-06 | 常州信息职业技术学院 | Paint sheet metal component scraper plate test platform pressure sensor |
| CN108955961A (en) * | 2018-06-06 | 2018-12-07 | 常州信息职业技术学院 | Paint the manufacturing method of sheet metal component scraper plate test platform |
| CN109624501A (en) * | 2018-12-06 | 2019-04-16 | 英业达科技有限公司 | Printing machine scraper automatic checkout equipment |
| CN109764990A (en) * | 2018-11-28 | 2019-05-17 | 东台世恒机械科技有限公司 | A method of d ie cutting press is detected with die-cutting machine pressure test device |
| CN111044003A (en) * | 2019-12-04 | 2020-04-21 | 常州三立精图光电有限公司 | Method for improving flatness of screen printing plate |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108759659A (en) * | 2018-06-06 | 2018-11-06 | 常州信息职业技术学院 | Paint sheet metal component scraper plate test platform control system |
| CN108760103A (en) * | 2018-06-06 | 2018-11-06 | 常州信息职业技术学院 | Paint sheet metal component scraper plate test platform pressure sensor |
| CN108955961A (en) * | 2018-06-06 | 2018-12-07 | 常州信息职业技术学院 | Paint the manufacturing method of sheet metal component scraper plate test platform |
| CN108760103B (en) * | 2018-06-06 | 2020-06-02 | 常州信息职业技术学院 | Pressure sensor for paint sheet metal part scraper testing platform |
| CN108955961B (en) * | 2018-06-06 | 2020-06-02 | 常州信息职业技术学院 | Manufacturing method of pressure sensor for paint sheet metal part scraper testing platform |
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| CN109764990A (en) * | 2018-11-28 | 2019-05-17 | 东台世恒机械科技有限公司 | A method of d ie cutting press is detected with die-cutting machine pressure test device |
| CN109764990B (en) * | 2018-11-28 | 2020-11-13 | 东台世恒机械科技有限公司 | Method for detecting die cutting pressure by using die cutting machine pressure testing device |
| CN109624501A (en) * | 2018-12-06 | 2019-04-16 | 英业达科技有限公司 | Printing machine scraper automatic checkout equipment |
| CN109624501B (en) * | 2018-12-06 | 2020-09-08 | 英业达科技有限公司 | Automatic detection equipment for scraper of printing machine |
| CN111044003A (en) * | 2019-12-04 | 2020-04-21 | 常州三立精图光电有限公司 | Method for improving flatness of screen printing plate |
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Application publication date: 20140108 |