An automatic testing device for metalworking fluids

Abstract

The present invention relates to the technical field of metalworking fluid testing, and specifically discloses an automatic testing device for metalworking fluids, which includes a test bench, a processor, a display screen, and a transparent graduated cylinder. A column is rotatably arranged on the test bench, and there are no less than three hoop frames arranged on the column. The lower end of the transparent graduated cylinder is connected with a T-shaped pipe through a sealing disc. A piston block is connected in the T-shaped pipe through a spring. The lower end of the piston block is connected with a lifting rod extending out of the T-shaped pipe, and the lower end of the lifting rod is connected with a traveling wheel. The side end of the T-shaped pipe is connected with a plugging part. A guiding track ring acting on the traveling wheel is arranged directly below the moving track of the transparent graduated cylinder. Two downwardly concave track notches are formed on the guiding track ring, and a foam characteristic testing unit is arranged on the test bench aligned with one of the track notches. This testing device not only realizes full-automatic processing, improves the efficiency of batch detection, but also measures more parameters and can better reflect the relevant characteristics of metalworking fluids.

Description

Technical Field

[0001] The present invention relates to the technical field of metalworking fluid testing, and specifically discloses an automatic testing device for metalworking fluids. Background Art

[0002] Metalworking fluids are mainly liquids used for lubrication, cooling, rust prevention, cleaning, etc. during the metalworking process, and mainly include cutting fluids, grinding fluids, rust preventives, cleaning fluids, phosphating fluids, etc. During the production and preparation of metalworking fluids, it is necessary to test the foam performance of metalworking fluids such as cutting fluids and grinding fluids to prepare metalworking fluids with different anti-foaming and defoaming properties.

[0003] The traditional foam property test of metalworking fluids is to quantitatively add them into a stoppered graduated cylinder, shake it up and down several times, then let it stand at room temperature, and then observe the change in the foam volume on the liquid surface and record it in real time. However, the situation of generating foam by manually shaking the graduated cylinder will still have differences due to personal strength and speed, resulting in large errors in test results, and the labor intensity of manual shaking is relatively large when conducting batch tests.

[0004] The utility model patent with the application number 201720186082.2 discloses a metalworking fluid foam property testing device, including a frame body; a dispensing peristaltic pump with multiple pump heads, and multiple pump tubes are respectively connected to the multiple pump heads; a graduated cylinder fixedly arranged on the frame body, at least one pump tube penetrates into the graduated cylinder from the top of the graduated cylinder through a nozzle, and at least one pump tube communicates with the inside of the graduated cylinder from the bottom of the graduated cylinder. The testing device disclosed in this patent realizes the circulating transportation of the liquid inside the graduated cylinder by the action of the peristaltic pump, so that the dripping liquid forms foam at the upper end of the graduated cylinder, and then manual observation and recording can be carried out. Compared with the traditional manual shaking and then observation and measurement, it can avoid the errors caused by manual operation and reduce the labor amount of manual testing. However, during the testing process, the observation of foam still needs to be carried out by manual naked eyes and recorded, and it can only be used to test the foam volume and cannot test the foam generation speed and defoaming speed. In addition, during the batch measurement process, it is still necessary to manually remove the graduated cylinder for cleaning to avoid the influence of the remaining liquid on the next test. Based on this, the present application proposes an automatic testing device for metalworking fluids that can effectively solve the above technical problems. Summary of the Invention

[0005] The present invention aims to provide an automatic testing device for metalworking fluids to realize the full-automatic testing of the foam generation speed, volume, and defoaming speed of metalworking fluids, and can automatically clean the graduated cylinder during the batch testing process to achieve its continuous and efficient testing.

[0006] The present invention is realized through the following technical solutions:

[0007] An automatic testing device for metal working fluids, comprising a test bench, a processor, a display screen and a transparent measuring cylinder. A column is rotatably arranged on the test bench, and not less than three hoop frames for fixing the transparent measuring cylinder are evenly arranged on the column. The lower end of the transparent measuring cylinder is connected with a T-shaped pipe through a sealing disc. The bottom of the T-shaped pipe is connected with a piston block through a spring. The lower end of the piston block is connected with a lifting rod extending out of the T-shaped pipe, and the lower end of the lifting rod is connected with a traveling wheel. A plug-in part is connected to the side end of the T-shaped pipe. A guiding track ring acting on the traveling wheel is arranged directly below the moving track of the transparent measuring cylinder. Two downwardly concave track notches are formed in the guiding track ring, and a foam characteristic testing unit is arranged on the test bench aligned with one of the track notches.

[0008] The foam characteristic testing unit includes a vertical plate fixed on the test bench. Side plates are arranged on both sides of the vertical plate. A peristaltic pump is arranged on the vertical plate. A circulation pipe is connected to the peristaltic pump. The upper end of the circulation pipe is arranged aligned with the upper end opening of the transparent measuring cylinder, and the lower end is provided with a plug connector aligned with the plug-in part. A first driving member for pushing the plug connector towards the plug-in part is arranged on the vertical plate. Vertically aligned slits and reference strips are respectively arranged on the two side plates. A lifting seat is arranged on the vertically aligned slit. An industrial camera facing the reference strip is arranged on the lifting seat. A lifting driving mechanism for moving the lifting seat up and down is arranged on the side plate. A laser rangefinder for measuring the height of the lifting seat is arranged on the side plate.

[0009] The automatic testing device for metal working fluids disclosed in the present invention can circularly rotate not less than three transparent measuring cylinders through the action of the column and the hoop frames, so that at least one transparent measuring cylinder is in the testing station, one transparent measuring cylinder is in the cleaning station, and the other is in the feeding station before testing during the testing process. During the rotation of the transparent measuring cylinder, the opening or closing of the T-shaped pipe can be realized through the interaction between the traveling wheel and the guiding track ring. When the transparent measuring cylinder is in the testing station and the cleaning station, the T-shaped pipe will be opened for the circulating transportation of the liquid during the testing process and the discharge of the liquid and the rinsing liquid during the cleaning process, while at other positions, the T-shaped pipe is in a closed state, avoiding the leakage of the liquid in the transparent measuring cylinder.

[0010] During the foam characteristic testing process, the peristaltic pump is used to pump the liquid at the bottom of the transparent measuring cylinder upward and then fall back into the transparent measuring cylinder to generate bubbles. At the same time, the industrial camera, the reference strip, the lifting driving mechanism and the processor are used to capture the top of the foam in real time, so as to control the industrial camera to always keep the same height as the top of the foam. Then, the height of the foam is measured at all times through the action of the laser rangefinder, and the foam generation speed and defoaming speed are obtained through analysis and comparison. Then, the measured information data are displayed on the display screen.

[0011] As a further setting of the above solution, the lifting drive mechanism includes a servo motor and a transmission lead screw. A lead screw nut matching the transmission lead screw is arranged on the lifting seat. The servo motor, the industrial camera, and the laser rangefinder are all electrically connected to the processor.

[0012] As a further setting of the above solution, the laser rangefinder is fixedly arranged at the lower end of the side plate, and a stop block aligned with the laser rangefinder up and down is arranged on the lifting seat.

[0013] As a further setting of the above solution, a power assembly for driving the column to rotate at a fixed angle is arranged on the test bench.

[0014] As a further setting of the above solution, a quantitative water adding unit and a measuring cylinder cleaning unit are arranged on the test bench. The measuring cylinder cleaning unit is aligned with another track notch on the guiding track ring.

[0015] As a further setting of the above solution, the measuring cylinder cleaning unit includes a vertical frame. A lifting device is arranged at the top end of the vertical frame, and a sponge block for cleaning the inside of the transparent measuring cylinder is connected to the lower end of the lifting device.

[0016] As a further setting of the above solution, the measuring cylinder cleaning unit further includes a first liquid pump and a spray pipe. The first liquid pump is connected to the spray pipe, and the upper end of the spray pipe extends to the position directly above the moving track of the transparent measuring cylinder through a second telescopic member.

[0017] As a further setting of the above solution, the quantitative water adding unit includes a water adding pipe. The upper end of the water adding pipe is arranged directly above the moving track of the transparent measuring cylinder, and a flow meter and a second liquid pump are arranged on the water adding pipe.

[0018] The automatic metal working fluid testing device disclosed by the present invention can further realize the cleaning of the transparent measuring cylinder and the quantitative water adding for proportioning through the measuring cylinder cleaning unit and the quantitative water adding unit. After the test is completed, the transparent measuring cylinder is moved to the position of the measuring cylinder cleaning unit. At this time, the T-shaped pipe will be opened to drain all the internal test liquid first, and then the first liquid pump is started to spray cleaning water into the transparent measuring cylinder for flushing. After the flushing is completed, the remaining liquid in the transparent measuring cylinder is completely sucked away by the up and down movement of the sponge block to ensure the internal cleanliness. Finally, the cleaned transparent measuring cylinder will be moved to the quantitative water adding unit. According to the detection requirements of the metal working fluid sample to be detected, water is quantitatively added into it through the second liquid pump and the flow meter and mixed with the metal working fluid to complete the preparation process for the next detection, realizing the full-automatic testing of the whole process.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The testing device disclosed in the present invention can perform rotational switching on multiple transparent measuring cylinders through rotation, enabling different transparent measuring cylinders to sequentially undergo the processes of testing, cleaning, and material preparation, thereby achieving fully automated processing and effectively improving the efficiency of high - efficiency detection of batch samples of metal working fluids.

[0021] During the process of generating foam by circulating and transporting the liquid through a peristaltic pump in the foam property testing unit of the present invention, the industrial camera can capture the reference strip to achieve synchronous lifting and lowering of the industrial camera along with the top of the foam liquid level. During the lifting and lowering process, a laser rangefinder is used to measure various parameters such as the foam height, foam generation speed, and defoaming speed. Compared with the usual method of manual visual observation and recording, not only are the data accurate, but more parameters can be measured, and it can better reflect the relevant characteristics of the metal working fluid.

[0022] The testing device disclosed in the present invention is further provided with a measuring cylinder cleaning unit and a quantitative water - adding unit, which can successively achieve the cleaning of the transparent measuring cylinder and quantitative water - adding for material preparation. This cleaning unit can not only wash the transparent measuring cylinder, but also adsorb moisture with a sponge block after washing, effectively avoiding the influence of the liquid remaining in the transparent measuring cylinder on the subsequent test results, and further improving the accuracy of the test results of the metal working fluid. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 It is a schematic three - dimensional structure diagram of the first angle of Embodiment 1 of the present invention;

[0025] Figure 2 It is a schematic three - dimensional structure diagram of the second angle of Embodiment 1 of the present invention;

[0026] Figure 3 It is a schematic three - dimensional structure diagram of the upright column, hoop frame, transparent measuring cylinder, etc. in the present invention;

[0027] Figure 4 It is a schematic internal three - dimensional structure diagram of the transparent measuring cylinder, sealing disc, and trapezoidal tube in the present invention;

[0028] Figure 5 For the present invention Figure 4 The enlarged structure diagram of part A in it;

[0029] Figure 6 It is a schematic three - dimensional structure diagram of the foam property testing unit in the present invention;

[0030] Figure 7 This is a schematic three-dimensional structure diagram of Embodiment 2 of the present invention. Detailed implementation manners

[0031] In order to enable those skilled in the art to better understand the solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0032] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will refer to the appended Figures 1 - 7 drawings and describe this application in detail in conjunction with the embodiments. Embodiment 1

[0033] Embodiment 1 discloses a device for automatically testing the foam of metalworking fluids. Referring to the appended Figure 1 drawings and the appended Figure 2 drawings, this device includes a test bench 1, a processor 2 and a display screen 3. In the drawings shown, both the processor 2 and the display screen 3 are arranged at one end of the upper surface of the test bench 1.

[0034] Referring to the appended Figure 3 drawings, a column 4 is rotatably arranged at the center of the upper surface of the test bench 1. At the same time, a power assembly 5 for driving the column 4 to rotate at a fixed angle is arranged on the upper surface of the test bench 1. The power assembly 5 includes a gearbox and a power motor. The lower end of the column 4 is extended into the interior of the gearbox, then the power motor is arranged in the gearbox, and the power motor is meshed with the column 4 through the gears inside the gearbox. No less than three sets of hoop frames 401 are evenly welded on the outer cylindrical surface of the column 4. In the drawings shown, three sets of hoop frames 401 are provided in total, and then a transparent graduated cylinder 6 is clamped in each set of hoop frames 401.

[0035] Referring to the appended Figure 4 drawings and the appended Figure 5, the upper and lower ends of the transparent graduated cylinder 6 are both open, and a sealing plate 7 is installed in the lower opening of the transparent graduated cylinder 6. A T-shaped pipe 8 is connected to the center of the lower surface of the sealing plate 7, and the upper end of the T-shaped pipe 8 is communicated with the inner cavity of the transparent graduated cylinder 6. A lifting rod 9 is inserted into the lower end of the T-shaped pipe 8, and a plugging part 13 is connected to the middle side end of the T-shaped pipe 8. A walking wheel 10 is connected to the lower end of the lifting rod 9, a piston block 11 is connected to the upper end of the lifting rod 9, and a spring 12 is arranged between the piston block 11 and the bottom wall of the T-shaped pipe 8. In addition, a guiding track ring 14 is arranged directly below the rotation and movement track of the walking wheel 10 along the column 4. The upper surface of the guiding track ring 14 is in contact with the walking wheel 10, and two downwardly concave track notches 141 are opened on the guiding track ring 14. When the transparent graduated cylinder 6 moves to the track notch 141, under the action of the spring 12, the piston block 11 and the middle side end of the T-shaped pipe 8 can move downward and be misaligned without the restriction of the walking wheel 10, thereby opening the T-shaped pipe 8.

[0036] Reference appendix Figure 2 and appendix Figure 5 , a foam property testing unit 15 is arranged on the upper surface of the test bench 1, and the foam property testing unit 15 is radially aligned with one of the track notches 141. Specifically, the foam property testing unit 15 includes a vertical plate 151 fixed on the upper surface of the test bench 1. Side plates 152 are arranged on both sides of the vertical plate 151, and the upper and lower ends of the side plates 152 both extend beyond the upper and lower ends of the transparent graduated cylinder 6. A peristaltic pump 153 is installed on the back of the vertical plate 151. Circulation pipes 154 are connected to both the inlet and outlet ends of the peristaltic pump 153. The upper end of the circulation pipe 154 is arranged directly above the transparent graduated cylinder 6, the lower end of the circulation pipe 154 is radially aligned with the plugging part 13 on the transparent graduated cylinder 6, and a plug joint 155 corresponding to the plugging part 13 is arranged at the lower end of the circulation pipe 154. Then, a first telescopic member 156 for pushing the plug joint 155 towards the plugging part 13 is arranged on the vertical plate 151.

[0037] A vertical strip opening 1521 is provided on one of the side plates 152, and a reference strip 157 is provided on the inner side surface of the other side plate 152. The reference strip 157 is aligned with the vertical strip opening 1521, and the transparent measuring cylinder 6 located at the detection station is between the two. A vertically arranged screw drive assembly 158 is provided on the outer side surface of the side plate 152 provided with the vertical strip opening 1521, and a lifting seat 159 is threadedly connected to the screw drive assembly 158. The screw drive assembly 158 is composed of a servo motor, a bearing seat, and a transmission screw, and a screw nut (not shown in the figure) matching the transmission screw is provided on the lifting seat 159, so that the lifting seat 159 can be accurately moved up and down under the control of the servo motor. An industrial camera 150 is fixedly installed on the lifting seat 159, and the industrial camera 150 is aligned with the reference strip 157 through the vertical strip opening 1521. At the same time, a stop block is provided at the side end of the lifting seat 159, and a laser rangefinder 160 is fixed on the side plate 152 directly below the stop block. Then, the laser rangefinder 160, the industrial camera 150, and the servo motor in the screw drive assembly 158 are all electrically connected to the processor 2.

[0038] When the above foam property testing unit 15 tests the foam of the metalworking fluid in the transparent measuring cylinder 6, the liquid level after adding the metalworking fluid and the proportioning water is the horizontal origin. At this time, the distance measured by the laser rangefinder 160 from the stop block is X0. Then, the peristaltic pump 153 is started to lift the mixed liquid in the transparent measuring cylinder 6 upward along the circulation pipe 154, and then it falls from the circulation pipe 154 and impacts the mixed liquid in the transparent measuring cylinder 6 to generate foam. When foam starts to be generated in the transparent measuring cylinder 6, it will block the industrial camera 150 from photographing the reference strip 157. Then, through the processing of the processor 2, the servo motor in the screw drive assembly 158 will be automatically controlled to operate, and the industrial camera 150 will be lifted upward. At this time, the distance measured by the laser rangefinder 160 is X0 + x, and x is the foam height. During the up and down movement of the industrial camera 150, the upper half of the image captured by the industrial camera 150 can always capture the reference strip 157, and the lower half is blocked by the foam. At this time, it means that the industrial camera 150 always keeps consistent with the top of the foam. Then, through the ranging function of the laser rangefinder 160, the foam height can be accurately measured. At the same time, the operation information of the servo motor in the entire screw drive assembly 158 and the laser ranging information can also be stored in time, and the foam production speed and elimination speed can be obtained through subsequent analysis. Embodiment 2

[0039] Embodiment 2 discloses an automatic testing device for metalworking fluids, which is an improved design based on the technical solution in Embodiment 1. The same parts as those in Embodiment 1 will not be described again.

[0040] Reference appendix Figure 7, Embodiment 2 of the present invention further provides a quantitative water adding unit and a graduated cylinder cleaning unit on the test bench 1, wherein the graduated cylinder cleaning unit is radially aligned with another track notch 141 on the guiding track ring 14. Specifically, it includes a vertical frame 17 fixed on the upper surface of the test bench 1, and a lifting device 18 is arranged at the top of the vertical frame 17. Specifically, the lifting device 18 can be an electric telescopic rod or a screw rod lift, and the lifting device 18 is located directly above the circular movement trajectory of the transparent graduated cylinder 6. Then, a sponge block 19 is connected to the lower end of the lifting device 18, and the sponge block 19 can be completely and tightly attached to the transparent graduated cylinder 6.

[0041] Meanwhile, a spray pipe 20 is arranged on the vertical frame 17 below the sponge block 19 and facing the transparent graduated cylinder 6. The upper end of the spray pipe 20 is connected to a second telescopic member 21 on the vertical frame 17, so that under the action of the second telescopic member 21, the upper end of the spray pipe 20 can be moved and adjusted without hindering the up and down movement of the sponge block 19. Then, a first liquid pump 22 is connected to the lower end of the second telescopic member 21.

[0042] The quantitative water adding unit includes a vertically arranged water adding pipe 23, the upper end of which is also arranged directly above the circular movement trajectory of the transparent graduated cylinder 6. Then, a flow meter 24 is arranged on the water adding pipe 23, and finally, a second liquid pump (not shown in the figure) is connected to the lower end of the water adding pipe 23, and both the flow meter 24 and the second liquid pump are electrically connected to the processor 2, so that they can be controlled by the signal of the processor 2.

[0043] After the automatic metal working fluid testing device disclosed in Embodiment 2 of the present invention finishes testing the foam characteristics of the metal working fluid, the transparent graduated cylinder 6 is moved to the graduated cylinder cleaning unit. At this time, due to the action of the track notch 141, the side end of the T-shaped pipe 8 will be opened, and then the liquid inside the transparent graduated cylinder 6 will be automatically drained. Subsequently, the first liquid pump 22 is started to flush the inside of the transparent graduated cylinder 6 with pure water. After the flushing is completed, the lifting device 18 is started to extend the sponge block 19 into the transparent graduated cylinder 6 to dry it, thereby avoiding the influence of the residual liquid inside on the test results.

[0044] After the inside of the transparent graduated cylinder 6 is cleaned, it is rotated to the quantitative water adding unit. After the operator quantitatively adds the metal working fluid sample to be tested, then the quantitative water adding unit is controlled to quantitatively inject the corresponding proportion of pure water into it for the subsequent determination and processing of the metal working fluid, realizing the continuous and automatic testing of the metal working fluid.

[0045] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic testing device for metalworking fluids, comprising a test bench, a processor, a display screen and a transparent graduated cylinder, characterized in that, A column is rotatably arranged on the test bench. No less than three hoop frames for fixing the transparent graduated cylinder are evenly arranged on the column. The lower end of the transparent graduated cylinder is connected with a T-shaped pipe through a sealing disc. The bottom of the T-shaped pipe is connected with a piston block through a spring. The lower end of the piston block is connected with a lifting rod extending out of the T-shaped pipe, and the lower end of the lifting rod is connected with a traveling wheel. A plug-in part is connected to the side end of the T-shaped pipe. A guiding track ring acting on the traveling wheel is arranged directly below the moving track of the transparent graduated cylinder. Two downwardly concave track notches are formed on the guiding track ring. A foam property testing unit is arranged on the test bench aligned with one of the track notches. The foam property testing unit includes a vertical plate fixed on the test bench. Side plates are arranged on both sides of the vertical plate. A peristaltic pump is arranged on the vertical plate. A circulation pipe is connected to the peristaltic pump. The upper end of the circulation pipe is arranged aligned with the upper end opening of the transparent graduated cylinder, and the lower end is provided with a plug connector aligned with the plug-in part. A first driving part for pushing the plug connector towards the plug-in part is arranged on the vertical plate. Vertically aligned slits and a control strip are respectively arranged on the two side plates. A lifting seat is arranged on the vertically aligned slit. An industrial camera is arranged on the lifting seat facing the control strip. A lifting driving mechanism for realizing the up and down movement of the lifting seat is arranged on the side plate. A laser rangefinder for measuring the height of the lifting seat is arranged on the side plate. The laser rangefinder is fixedly arranged at the lower end of the side plate. A blocking block aligned with the laser rangefinder up and down is arranged on the lifting seat. A power component for driving the column to rotate at a fixed angle is arranged on the test bench.

2. The automatic metalworking fluid testing device according to claim 1, characterized in that, The lifting driving mechanism includes a servo motor and a transmission lead screw. A lead screw nut matching the transmission lead screw is arranged on the lifting seat. The servo motor, the industrial camera and the laser rangefinder are all electrically connected to the processor.

3. The automatic metalworking fluid testing device according to claim 1, characterized in that, A quantitative water adding unit and a graduated cylinder cleaning unit are arranged on the test bench. The graduated cylinder cleaning unit is arranged aligned with the other track notch on the guiding track ring.

4. The automatic metalworking fluid testing device according to claim 3, characterized in that, The graduated cylinder cleaning unit includes a vertical frame. A lifting device is arranged at the top end of the vertical frame. A sponge block for cleaning the inside of the transparent graduated cylinder is connected to the lower end of the lifting device.

5. The automatic metalworking fluid testing device according to claim 4, characterized in that, The graduated cylinder cleaning unit further includes a first liquid pump and a spray pipe. The first liquid pump is connected to the spray pipe. The upper end of the spray pipe extends to directly above the moving track of the transparent graduated cylinder through a second telescopic member.

6. The automatic metalworking fluid testing device according to claim 3, characterized in that The quantitative water adding unit includes a water adding pipe. The upper end of the water adding pipe is arranged directly above the moving track of the transparent graduated cylinder. A flow meter and a second liquid pump are arranged on the water adding pipe.

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