CN113109210A - Online measuring device and method for viscosity of printing ink - Google Patents
Online measuring device and method for viscosity of printing ink Download PDFInfo
- Publication number
- CN113109210A CN113109210A CN202110416320.5A CN202110416320A CN113109210A CN 113109210 A CN113109210 A CN 113109210A CN 202110416320 A CN202110416320 A CN 202110416320A CN 113109210 A CN113109210 A CN 113109210A
- Authority
- CN
- China
- Prior art keywords
- viscosity
- measuring
- ink
- ball
- measurement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000005259 measurement Methods 0.000 claims abstract description 57
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 230000006698 induction Effects 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 238000005260 corrosion Methods 0.000 claims description 6
- 230000007797 corrosion Effects 0.000 claims description 6
- 230000005389 magnetism Effects 0.000 claims description 4
- 239000004020 conductor Substances 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- 238000000691 measurement method Methods 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 description 10
- 239000008188 pellet Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000005286 illumination Methods 0.000 description 3
- 230000001939 inductive effect Effects 0.000 description 3
- 238000011545 laboratory measurement Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000003670 easy-to-clean Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
- G01N11/10—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
- G01N11/10—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material
- G01N11/12—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material by measuring rising or falling speed of the body; by measuring penetration of wedged gauges
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
- Ink Jet (AREA)
Abstract
The invention discloses an on-line measuring device for ink viscosity, which comprises an ink conveying main pipeline, a measuring branch, a viscosity measuring tube, a heat exchange device and an upper computer, wherein the measuring branch is divided from the ink conveying main pipeline, the viscosity measuring tube is vertically arranged, the bottom of the viscosity measuring tube is communicated with the measuring branch, the heat exchange device is arranged outside the viscosity measuring tube, the measuring branch is provided with a valve, a measuring ball is arranged in the viscosity measuring tube, the top of the viscosity measuring tube is connected back to the ink conveying main pipeline through a pipeline, the upper side and the lower side of the outer side of the viscosity measuring tube are respectively provided with a ball sensor, the upper computer is respectively connected with the ball sensors, and the viscosity measuring value is calculated by. The invention also discloses an on-line viscosity measurement method. The invention is based on a ball drop method to achieve on-line measurement of ink viscosity.
Description
Technical Field
The invention belongs to a printing machine, and particularly relates to an on-line measuring device and method for ink viscosity.
Background
The ink is a raw material which must be used in the printing field, and because the ink contains volatile components, the viscosity of the ink can change along with the volatilization of the volatile components, and the change of the temperature of the ink can also cause the change of the viscosity; the change of the viscosity of the ink can cause color difference and influence the printing quality; therefore, the measurement and control of the viscosity of the ink are very important.
The traditional ink viscosity measurement method is to use a viscosity cup and a stopwatch to carry out manual measurement, but the deviation is large, and the measurement is generally carried out once in 30-60min, so that the fluctuation of the printing quality is large. It is therefore necessary to find a method for accurately measuring the viscosity of the ink at high frequency to achieve the goal of continuous control.
The following methods are common:
1. ink viscosity measurement by pneumatic diaphragm pump
For example, the patent with application number 201920413160.7 and named as "an upper computer for ink viscosity" has the working principle that: and acquiring the exhaust pulse frequency of an exhaust port of the pneumatic diaphragm pump through a pulse sensor, calculating the working load of the pneumatic diaphragm pump, and further calculating the viscosity of the ink flowing through the pneumatic diaphragm pump.
2. Ink viscosity measurement by measuring rotational torque of rotor
For example, the patent with application number 200620060969.9 entitled "automatic printing ink viscosity adjusting device" has the working principle: the ink viscosity was measured by measuring the rotational resistance of the disc.
3. Ink viscosity measurement by ultrasonic reflection
For example, in a patent with application number 202011244430.X entitled "a printing ink viscosity detection method, system, platform and storage medium", the working principle is as follows: projecting illumination or sound waves to the printing ink, reflecting the corresponding illumination or sound waves when the projected illumination or sound waves meet the printing ink, and acquiring the reflection data of the printing ink through a light receiver or a sound wave receiver; analyzing deviation data of the reflection data of the printing ink in real time through an optical analyzer or a sound wave analyzer; the viscosity coefficient of the printing ink is generated in real time by analyzing the deviation data.
The viscosity measurement methods are high in cost, and are easily affected by ink temperature fluctuation and bubbles generated in ink circulation, so that the accuracy of ink viscosity measurement is difficult to further improve.
The falling ball method is also a common viscosity measuring method, namely, a vertically placed glass cylinder is filled with liquid to be measured, two marks are made on the glass cylinder, the measuring ball falls from the top of the liquid to the first mark, the timing is started, and the timing is stopped when the second mark is reached; and calculating the falling speed of the measuring ball by using the time interval of the two marks and the distance between the two marks, and calculating the viscosity of the liquid according to the parameters of the measuring ball, such as speed, volume, weight, diameter, liquid density and the like. The usual timing method is visual measurement and is generally suitable for laboratory measurement after sampling.
If the ball drop method is applied to the measurement of the viscosity of the ink in the printing production, the following difficulties exist:
1. the on-line viscosity measurement is automatically carried out continuously or intermittently, and a laboratory measurement mode after sampling cannot be adopted;
for example, in the patent with application number 201711382488.9 entitled "falling ball viscometer device with glass tube connected to metal switching tube joint", the filling tube of the falling ball viscometer is mounted on a center bearing which allows the sample tube itself to be rapidly turned by 180 degrees, thereby allowing for immediate and repeated measurements. The technical scheme is that a measuring ball falling to the bottom of a sample tube of the viscometer is turned over by rotating the sample tube by 180 degrees to return to the top of the sample tube, and although the patent does not disclose how to control the problem that the measuring ball begins to fall in advance before reaching the top, intermittent measurement can be basically realized.
2. Measuring the time when the ball passes through the two marks, and automatically and accurately measuring;
for example, in patent No. CN200720040115.9 entitled "liquid viscosity measuring instrument by inductive falling ball method", two induction coils are sleeved in parallel on the outside of a glass measuring cylinder filled with liquid to be measured, so that a metal measuring ball falling in the liquid of the measuring cylinder can sequentially pass through the two induction coils, and then lead-out wires of the two induction coils are respectively connected with a main machine of the instrument. The technical scheme is that the time of a measuring ball passing through two marks (fixed height difference) is calculated by adopting the time difference of signal acquisition of an induction coil. But the patent is only used for more accurate laboratory measurement after sampling, and does not consider the explosion-proof requirement generally required by a printing field.
3. The influence of the ink temperature on the viscosity measurement is to be excluded;
for example, CN201520057307.5 entitled "an integrated ink viscosity temperature control device" includes a cold water supply unit and a water cooling circuit connected to each other and disposed around and in heat exchange relation with a second ink feed channel. The technical scheme is that a second ink conveying channel with a temperature control device is adopted to realize the temperature control of the ink at the periphery of the viscosity detection; the technical essence is that the temperature of the ink in the second ink conveying pipeline outside the viscosity measuring unit is controlled, the temperature of the ink in the viscosity measuring unit is not controlled, and the temperature control has certain hysteresis.
4. The variety of the used printing ink can be changed in the actual production of the printing machine, so that the viscosity measuring device is convenient to clean;
5. in the ink circulation, under the influence of a delivery pump, the ink contains certain bubbles, and the bubbles are in an unstable flowing state, so that the measurement result is inaccurate;
the above problems 4 and 5 are not reported in related patents and publications.
Disclosure of Invention
The invention aims to provide an ink viscosity on-line measuring device and method, which can realize the on-line measurement of the ink viscosity based on a ball drop method.
In order to solve the technical problems, the invention adopts the following technical scheme:
on one hand, the ink viscosity on-line measuring device comprises an ink conveying main pipeline, a measuring branch, a viscosity measuring pipe, a heat exchange device and an upper computer, wherein the measuring branch is divided from the ink conveying main pipeline, the viscosity measuring pipe is vertically arranged, the bottom of the viscosity measuring pipe is communicated with the measuring branch, the heat exchange device is arranged outside the viscosity measuring pipe, the measuring branch is provided with a valve, a measuring ball is arranged in the viscosity measuring pipe, the top of the viscosity measuring pipe is connected back to the ink conveying main pipeline through a pipeline, the upper side and the lower side of the outer side of the viscosity measuring pipe are respectively provided with a ball sensor, the upper computer is respectively connected with the ball sensors, and the viscosity measuring value is calculated by obtaining.
The upper end and the lower end of the viscosity measuring tube are respectively provided with a support frame, and the support frames are provided with measuring ball limiting cavities.
The support frame includes several backup pads of radially evenly arranging along intraductal, and the backup pad all has the wedge contact surface that contacts with measuring the ball and constitutes the spacing chamber of measuring ball.
And the output end of the temperature sensor is connected with an upper computer.
The measuring ball is metal or a metal ball with magnetism.
And a corrosion-resistant polymer layer, a corrosion-resistant coating or a coating is wrapped outside the measuring ball.
The viscosity measuring tube is made of heat-conductive material, and the inner diameter of the viscosity measuring tube is 1.2-2 times of the outer diameter of the measuring ball; the inner diameter of the measuring branch is 0.25-0.75 times of the inner diameter of the printing ink conveying main pipeline.
The valve is a pneumatic or electric control valve and is connected with an upper computer.
In another aspect, an on-line measuring method of an on-line measuring device for ink viscosity includes the following steps:
s1. opening the valve to make the ink flow from the main ink pipeline into the viscosity measuring tube via the measuring branch and the bottom of the viscosity measuring tube, and pushing the measuring ball to float upwards;
s2, when the upper ball sensor and the lower ball sensor are both sensed and continue for a period of time, the original ink in the viscosity measuring tube is completely replaced while the measuring ball is kept on the upper end support frame, and the flowing state of the ink in the tube is stable, so that the influence of bubbles on viscosity measurement is eliminated;
s3. controlling the valve to close to make the measuring ball fall down, and fall back to the lower support frame after being sensed by the upper and lower ball sensors;
s4. are calculated by the upper computer according to the sensing time difference in s3 to obtain the viscosity measurement value.
In step s3, the temperature of the ink in the tube is measured by a temperature sensor and fed back to the upper computer; in step s4, the upper computer corrects the viscosity measurement value according to the ink temperature or determines that the measurement is invalid and needs to be retested because the viscosity measurement value is out of the allowable measurement temperature range.
The ink viscosity on-line measuring device and method provided by the invention have the following advantages:
1. the viscosity measuring tube continuously measures the viscosity of the ink by intermittently opening and closing a valve on the measuring branch; the flow of the printing ink in the main printing ink conveying pipeline is not influenced, and the ink supply stability of the printing machine is not influenced.
2. The measuring ball in the viscosity measuring tube flows by the ink and is pushed to the top from the bottom, the mechanical structure is simple, and the problems of ink leakage and early sliding of the measuring ball are not easy to occur.
3. Arranging a heat exchange device outside the viscosity measuring tube to control the temperature of the ink in the viscosity measuring tube; the wall of the viscosity measuring tube is provided with a temperature sensor which can measure the temperature of the printing ink in the viscosity measuring tube in real time; when the actual temperature of the ink in the viscosity measuring tube is not greatly different from the set temperature, the measurement result can be calibrated according to a preset calibration mechanism in the upper computer, and when the actual temperature of the ink in the viscosity measuring tube is greatly different from the set temperature, the measurement can be judged to be invalid, and the measurement can be carried out again; the viscosity measurement result can be more accurate.
4. When the valve on the measuring branch is opened, the original ink in the viscosity measuring tube can be replaced; after the measuring ball is pushed to the top, the ink in the viscosity measuring tube is continuously replaced for a period of time, so that the ink enters a stable state, and the influence of bubbles on viscosity measurement is eliminated.
5. When the valve on the measuring branch is closed, the ink in the viscosity measuring tube is in a static state, the bubbles in the ink are also in a stable state, and the ink viscosity measuring accuracy is improved to some extent.
6. When the measuring ball is arranged at the top or the bottom of the viscosity measuring tube, the measuring ball is restrained by the support frame, so that the measuring ball is positioned at the axis position of the viscosity measuring tube, and the flowing of the printing ink in the viscosity measuring tube cannot be influenced.
7. The ball sensor can select a metal inductive sensor or a magnetic inductive sensor according to the type of the ink; the metal induction sensor has low cost and simple structure, and can be used for measuring the viscosity of the water-based ink without explosion-proof requirements; the magnetic induction sensor may be of the pneumatic type to meet the explosion-proof design required for solvent-based ink viscosity measurements.
8. When the valve is pneumatically controlled and the sensor is designed to be explosion-proof, the upper computer is arranged in an explosion-proof electrical box, and the whole machine can meet the explosion-proof requirement required by the viscosity measurement of the solvent type ink.
9. The inner walls of the measuring ball outer wall and the viscosity measuring pipe are smooth and easy to clean, when the printing machine switches printing ink varieties, the upper computer control valve can be normally opened, and when the printing ink conveying main pipeline is cleaned, the viscosity measuring pipe and the whole measuring branch are synchronously cleaned.
10. The whole measurement logic is automatically controlled by an upper computer without manual intervention.
Drawings
The invention is described in detail below with reference to the following figures and detailed description:
FIG. 1 is a schematic diagram of an on-line measuring device for ink viscosity according to the present invention;
FIG. 2 is a radial view of the cage within the viscosity measuring tube of the present invention;
fig. 3 is a schematic structural view of a support plate of the upper end support bracket of the present invention.
Detailed Description
The ink viscosity on-line measuring device of the invention is shown in figure 1, and the same as the prior art, the ink viscosity on-line measuring device also comprises an ink conveying main pipeline 1, and the difference is that the ink viscosity on-line measuring device also comprises a measuring branch 2 which is divided from the ink conveying main pipeline 1, a viscosity measuring pipe 3 which is vertically arranged and the bottom of which is communicated with the measuring branch 2, a heat exchange device 4 which is arranged outside the viscosity measuring pipe 3 and an upper computer 5, wherein the measuring branch 2 is provided with a valve 12 to control whether the measuring branch 2 is opened, and the continuous measurement of the ink viscosity through the viscosity measuring pipe 3 can be realized through intermittent and high-frequency switching; the viscosity measuring tube 3 is internally provided with a measuring ball 6, the top of the viscosity measuring tube 3 is connected back to the ink conveying main pipeline 1 through a pipeline, when the valve 12 is opened, the ink enters the viscosity measuring tube 3 from the ink conveying main pipeline 1 through the measuring branch 2 and the bottom of the viscosity measuring tube 3 and pushes the measuring ball 6 to float upwards, and when the valve 12 is closed, the measuring ball 6 loses the thrust of the flowing ink and automatically falls down; the upper side and the lower side of the outer side of the viscosity measuring tube 3 are respectively provided with a ball sensor 7, the upper computer 5 is respectively connected with the ball sensors 7, and the viscosity measuring value is calculated by obtaining the ball falling time difference sensed by the two ball sensors 7. The heat exchanger 4 can be a jacketed or submerged heat exchanger, and is used for controlling the temperature of the ink in the viscosity measuring tube 3 through the heat conducting liquid circulating in the liquid inlet tube 41 and the liquid outlet tube 42.
Referring to fig. 2 to 3, the viscosity measuring tube 3 is provided with a support frame 8 at the upper and lower ends thereof, and the support frame 8 is provided with a measuring ball limiting cavity for constraining the measuring ball 6. specifically, the following structure can be adopted, the support frame 8 includes a plurality of support plates 9 uniformly arranged along the radial direction of the tube, the number of the support plates is preferably more than three, the support plates 9 are provided with wedge-shaped contact surfaces 10 contacting the measuring ball 6 and form the measuring ball limiting cavity coaxial with the viscosity measuring tube 3, and the support of the support frame 8 is maintained at the axial position, so that the flow of the ink in the viscosity measuring tube 3 is not affected. Of course, the support frame 8 may also adopt other hollow structures.
The temperature sensor 11 is arranged on the pipe wall of the viscosity measuring pipe 3, the output end of the temperature sensor 11 is connected with the upper computer 5, and the temperature sensor is used for measuring the temperature of the printing ink in the viscosity measuring pipe 3 in real time and feeding the temperature back to the upper computer 5 to be used as a basis for judgment and slight correction.
According to the type of the printing ink, the measuring ball 6 can be made of metal or metal balls with magnetism, the outer wall of the measuring ball is required to be smooth and easy to clean, and the diameter of the measuring ball is 5-12 mm. In addition, the measuring ball 6 may be coated with a corrosion-resistant polymer layer, a corrosion-resistant coating or a coating. The viscosity measurement pipe 3 is made of heat-conductive material, and the inner diameter is 1.2-2 times of the outer diameter of the measurement ball 6. For example: the steel chromium plating pellet has an outer diameter of 5mm, the viscosity measuring tube 3 is a stainless steel tube with a polished inner wall (RA0.6 μm), and the inner diameter is 10mm which is 2 times of the outer diameter of the steel chromium plating pellet. Another example is: the tetrafluoroethylene pellets are coated by strong magnetism, and the outer diameter is 12 mm; the viscosity measuring tube 3 is a titanium alloy tube with a polished inner wall (RA0.4 μm), and has an inner diameter of 14.4mm which is 1.2 times of the outer diameter of the pellet.
The inner diameter of the measuring branch 2 is 0.25-0.75 times of the inner diameter of the main ink conveying pipeline 1. For example: the inner diameter of the measuring branch 2 is 4mm, which is 0.25 times of the inner diameter of the ink conveying main pipeline 1, which is 20 mm; another example is: the inner diameter of the measuring branch 2 is 24mm and is 0.75 time of the inner diameter of the ink conveying main pipeline 1 which is 32 mm.
The valve 12 can be a pneumatic or electric control valve, and the valve 12 is classified into a diaphragm valve, a pinch valve or a ball valve, etc., and is automatically controlled by being connected with the upper computer 5. The time of one measurement period is usually controlled to be 15-60s, and the specific length is related to the viscosity of the ink and the size of the outer diameter of the pellet: if the ink with low viscosity is used and the outer diameter of the small ball is larger, the small ball needs 5s for falling, 5s are distributed in the lifting process of the small ball, 5s are distributed in the continuous flowing time, and the total 15s is measured in one measuring period; if the ball needs 20s for ball drop if the ink is high in viscosity and the outer diameter of the ball is small, the ball lifting process is divided into 20s, the continuous flow time is divided into 20s, and the measuring period is 60 s.
The measurement method adopting the viscosity measurement device specifically comprises the following steps:
s1. control the valve 12 to open, so that the ink enters the viscosity measuring tube 3 from the main ink conveying pipeline 1 through the measuring branch 2 and the bottom of the viscosity measuring tube 3, and the measuring ball 6 is pushed to float upwards;
s2, when the measuring ball 6 floats upwards, the measuring ball passes through the positions of the lower ball sensor 7 and the upper ball sensor 7 successively, namely after the lower ball sensor 7 and the upper ball sensor 7 are both sensed, the operation lasts for a period of time, the measuring ball 6 is kept on the supporting frame 8 at the upper end, meanwhile, the original ink in the viscosity measuring pipe 3 is completely replaced, the flowing state of the ink in the pipe is stable, the influence of bubbles on the viscosity measurement is eliminated, and at the moment, the measuring ball 6 is restrained by the supporting frame 8 at the upper end of the viscosity measuring pipe 3, and the flowing of the ink in the viscosity measuring pipe 3 is not influenced;
s3. controlling the valve 12 to close, at this time, the ink in the viscosity measuring tube 3 is in a static state, the bubbles in the ink are in a stable state, the measuring ball 6 drops automatically without the driving force of the flowing ink, and drops to the lower end support frame 8 after being sensed by the upper and lower ball sensors 7, and in the process, the time difference of the measuring ball 6 passing through the two ball sensors 7 is recorded and transmitted to the upper computer 5;
s4. are calculated by the upper computer 5 according to the induction time difference of the falling ball in s3 to obtain the viscosity measured value. When a measuring period is finished, the steps can be circulated again, namely the viscosity of the ink can be measured repeatedly, and the whole measuring process is carried out automatically without manual intervention.
In step s3, the temperature of the ink in the tube can be measured by the temperature sensor 11 and fed back to the upper computer 5; in step s4, the upper computer 5 corrects the viscosity measurement value according to the ink temperature, specifically: when the difference between the actual temperature of the ink in the viscosity measuring tube 3 and the set temperature is not large, the measurement result can be calibrated according to a preset calibration mechanism in the upper computer 5; when the actual temperature of the ink in the viscosity measuring tube 3 exceeds the allowable measuring temperature range, the measurement is judged to be invalid, and the measurement needs to be carried out again; the viscosity measurement result can be more accurate.
However, those skilled in the art should realize that the above embodiments are illustrative only and not limiting to the present invention, and that changes and modifications to the above described embodiments are intended to fall within the scope of the appended claims, provided they fall within the true spirit of the present invention.
Claims (10)
1. The on-line measuring device for the viscosity of the printing ink comprises a printing ink conveying main pipeline and is characterized in that: still include a measurement branch road of branch off on the printing ink carries the main pipeline, vertical setting and the viscosity measurement buret that the bottom is linked together with the measurement branch road, locate viscosity measurement heat exchange device and host computer outside the pipe, be equipped with the valve on the measurement branch road, be equipped with the measurement ball in the viscosity measurement buret, the viscosity measurement buret top is passed through the pipeline and is linked back to the printing ink and carry the main pipeline, on the viscosity measurement buret outside, the downside respectively is equipped with a ball inductor, the host computer links to each other with ball inductor respectively, the induction time difference through obtaining two ball inductors is in order to calculate the viscosity measurement value.
2. The ink viscosity on-line measuring device according to claim 1, wherein: the upper end and the lower end of the viscosity measuring tube are respectively provided with a support frame, and the support frames are provided with measuring ball limiting cavities.
3. The ink viscosity on-line measuring device according to claim 2, wherein: the support frame includes several backup pads of radially evenly arranging along intraductal, and the backup pad all has the wedge contact surface that contacts with measuring the ball and constitutes the spacing chamber of measuring ball.
4. The ink viscosity on-line measuring device according to claim 1, wherein: and the output end of the temperature sensor is connected with an upper computer.
5. The ink viscosity on-line measuring device according to claim 1, wherein: the measuring ball is metal or a metal ball with magnetism.
6. The ink viscosity on-line measuring device according to claim 5, wherein: and a corrosion-resistant polymer layer, a corrosion-resistant coating or a coating is wrapped outside the measuring ball.
7. The ink viscosity on-line measuring device according to claim 1, wherein: the viscosity measuring tube is made of heat-conductive material, and the inner diameter of the viscosity measuring tube is 1.2-2 times of the outer diameter of the measuring ball; the inner diameter of the measuring branch is 0.25-0.75 times of the inner diameter of the printing ink conveying main pipeline.
8. The ink viscosity on-line measuring device according to claim 1, wherein: the valve is a pneumatic or electric control valve and is connected with an upper computer.
9. The on-line measuring method of the ink viscosity on-line measuring device according to any one of claims 1 to 8, characterized by comprising the steps of:
s1. opening the valve to make the ink flow from the main ink pipeline into the viscosity measuring tube via the measuring branch and the bottom of the viscosity measuring tube, and pushing the measuring ball to float upwards;
s2, when the upper ball sensor and the lower ball sensor are both sensed and continue for a period of time, the original ink in the viscosity measuring tube is completely replaced while the measuring ball is kept on the upper end support frame, and the flowing state of the ink in the tube is stable, so that the influence of bubbles on viscosity measurement is eliminated;
s3. controlling the valve to close to make the measuring ball fall down, and fall back to the lower support frame after being sensed by the upper and lower ball sensors;
s4. are calculated by the upper computer according to the sensing time difference in s3 to obtain the viscosity measurement value.
10. The on-line measuring method according to claim 9, wherein: in step s3, the temperature of the ink in the tube is measured by a temperature sensor and fed back to the upper computer; in step s4, the upper computer corrects the viscosity measurement value according to the ink temperature or determines that the measurement is invalid and needs to be retested because the viscosity measurement value is out of the allowable measurement temperature range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110416320.5A CN113109210A (en) | 2021-04-19 | 2021-04-19 | Online measuring device and method for viscosity of printing ink |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110416320.5A CN113109210A (en) | 2021-04-19 | 2021-04-19 | Online measuring device and method for viscosity of printing ink |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113109210A true CN113109210A (en) | 2021-07-13 |
Family
ID=76718396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110416320.5A Pending CN113109210A (en) | 2021-04-19 | 2021-04-19 | Online measuring device and method for viscosity of printing ink |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113109210A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201047821Y (en) * | 2007-06-28 | 2008-04-16 | 南京恒立达光电仪器厂 | Induction type falling ball method liquid viscosity determinator |
| CN202101913U (en) * | 2011-05-18 | 2012-01-04 | 张家港金米兰德龙机械有限公司 | Viscosimeter for code spraying machine with ink |
| CN203310720U (en) * | 2013-05-27 | 2013-11-27 | 吴春艳 | Digital display viscometer |
| CN204613786U (en) * | 2015-01-27 | 2015-09-02 | 博斯特（上海）有限公司 | A kind of integrated form ink viscosity Temperature-controlled appliance |
| CN208602089U (en) * | 2018-08-03 | 2019-03-15 | 江苏海惠沃特包装有限公司 | A kind of printing machine oil of high quality ink supply device |
| CN109946201A (en) * | 2017-12-20 | 2019-06-28 | 邓前军 | A kind of falling ball viscometer device of glass tube connection metal conversion pipe fitting |
-
2021
- 2021-04-19 CN CN202110416320.5A patent/CN113109210A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201047821Y (en) * | 2007-06-28 | 2008-04-16 | 南京恒立达光电仪器厂 | Induction type falling ball method liquid viscosity determinator |
| CN202101913U (en) * | 2011-05-18 | 2012-01-04 | 张家港金米兰德龙机械有限公司 | Viscosimeter for code spraying machine with ink |
| CN203310720U (en) * | 2013-05-27 | 2013-11-27 | 吴春艳 | Digital display viscometer |
| CN204613786U (en) * | 2015-01-27 | 2015-09-02 | 博斯特（上海）有限公司 | A kind of integrated form ink viscosity Temperature-controlled appliance |
| CN109946201A (en) * | 2017-12-20 | 2019-06-28 | 邓前军 | A kind of falling ball viscometer device of glass tube connection metal conversion pipe fitting |
| CN208602089U (en) * | 2018-08-03 | 2019-03-15 | 江苏海惠沃特包装有限公司 | A kind of printing machine oil of high quality ink supply device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102353427B (en) | Detection device for metrological characteristics of water meter and detection method for using same | |
| CN105716997A (en) | High-temperature melt physical property measuring device | |
| CN105502264A (en) | Weighting type liquid metering system for automatic liquid selling machine and metering method thereof | |
| US7730769B1 (en) | Capillary viscometers for use with Newtonian and non-Newtonian fluids | |
| CN107843315A (en) | A kind of flowmeter verification device and its calibration method | |
| CN106441521A (en) | Full-automatic serial connection water meter verification and calibration device | |
| CN113109210A (en) | Online measuring device and method for viscosity of printing ink | |
| CN106338458A (en) | High-temperature melt surface tension measuring device and measuring method | |
| CN104406887B (en) | Edible oil detection device | |
| CN109991127B (en) | Verification and calibration device for rotational viscometer and operation method thereof | |
| CN106990021B (en) | Roll-off type viscosity automatic measurement device and method | |
| CN206557046U (en) | A kind of Ubbelohde viscometer of improvement | |
| CN213301946U (en) | Automatic calibrating installation of outflow cup type viscometer | |
| CN207066922U (en) | A kind of viscosity test device | |
| CN206725049U (en) | Semi-automatic water meters in series connection verifies calibrating installation | |
| CN209673595U (en) | A kind of water-repellent paint viscosity test device | |
| CN207946330U (en) | The test device of fluid viscosity | |
| CN208505527U (en) | A kind of vivo implantation type pressure sensor test device | |
| CN206161119U (en) | Full -automatic series connection water gauge check -up calibrating installation | |
| CN2602357Y (en) | Heavy caliber testing device for heat meter | |
| CN205328595U (en) | Automatic sell and weigh formula on liquid machine and go out liquid measurement system | |
| CN216870278U (en) | Constant temperature type viscometer | |
| CN112304396A (en) | Micro flow calibration system | |
| CN218865233U (en) | Automatic measuring device of measuring-in type transparent measuring device for capacity comparison method | |
| CN221034058U (en) | Eccentric half ball valve with metering function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |