Precise quantitative damping grease outlet mechanism with online monitoring function

Abstract

The invention relates to the technical field of damping grease, in particular to an on-line monitoring damping grease accurate quantitative oil outlet mechanism which comprises a liquid storage container, a power extrusion assembly, a visual monitoring assembly and a control assembly, the liquid storage container is used for storing damping grease, the power extrusion assembly is in butt joint with one end of the liquid storage container, and the visual monitoring assembly is in butt joint with the other end of the liquid storage container; a flat channel is formed in the other end of the liquid storage container, and damping grease in the liquid storage container is extruded out along the flat channel through power of the power extrusion assembly; the motion control program can accurately control initial operation of the power extrusion assembly based on the preset oil outlet amount, it is ensured that the extruded oil volume is preliminarily matched with the preset value, and a foundation is laid for quantitative oil outlet; in the grease extrusion process and after extrusion, the procedure is not stopped only after initial extrusion is completed, but dynamically judges whether the extruded grease needs to be supplemented or not by combining bubble volume data obtained through visual monitoring and calculating the size relation between the bubble volume sum and the volume compensation threshold value.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of damping grease, in particular to a damping grease precise quantification oiling mechanism for online monitoring. BACKGROUND

[0002] In the field of damper production and manufacturing, high-viscosity translucent damping grease (also known as resistance oil) is the core consumable that ensures the realization of functions such as slow falling of the damper. This type of grease has the characteristic of super high viscosity, and its physical state is as follows: when an oil mass the size of a ping-pong ball is dropped, it can bounce, and it will take a long time to gradually flow flat. The special physical properties make it face significant challenges in the process of quantitative taking.

[0003] In traditional production operations, due to the extremely high viscosity of damping grease, conventional oiling equipment cannot effectively extrude the grease, so workers usually need to use tools to grab a small amount of grease and place it on a precision electronic scale for weighing and adjusting. When the weight of the grease is insufficient, it needs to be added gradually, and when the weight exceeds the standard, it needs to be removed gradually. This process often requires repeated operations to obtain the required amount of grease. At the same time, the high viscosity characteristic also causes the damping grease to stick to the hands and tools, further increasing the difficulty of precise quantification. Not only does it consume a lot of time, but it also cannot meet the efficiency requirements of batch production.

[0004] To improve the above problems, targeted solutions have appeared in existing technologies, such as the "damping grease precise quantification oiling mechanism" disclosed in the invention patent with the authorization announcement number CN219000149U. This mechanism constructs a three-stage metering system through the sequential arrangement of a feeding structure, a power structure, and an oil discharging mechanism. First, the initial metering is completed at the oil inlet end to ensure the fixed amount of grease entering the system. Then, the grease is stored in the transfer oil storage cylinder, and the second metering is achieved through the descending stroke of the rod in the power structure to ensure the stability of the output grease amount. Finally, the third metering is performed through the oil discharging mechanism to precisely control the damping oil supply accuracy. Compared with the traditional continuous oil feeding and discharging process, this multi-stage metering structure significantly improves the oiling precision. When the total oil output is less than 3.5g, the weight accuracy of the damping grease can be controlled within ±0.001g, effectively reducing the scrap rate of slow-falling dampers caused by uneven oil consumption to below 0.1%.

[0005] However, the existing technology still has unresolved key defects: due to the extremely high viscosity of the damping grease, air bubbles are easily trapped inside. During the process of filling the grease into the quantitative mechanism, large air bubbles can be quickly expelled, but smaller air bubbles are extremely difficult to completely remove. When the amount of air bubbles in the grease is high, it will directly cause a deviation between the actual effective grease amount and the metering value, seriously affecting the accuracy of the final oil output, and becoming an important bottleneck restricting the improvement of the precision of batch production of dampers. SUMMARY

[0006] The present application is to overcome the above-mentioned deficiencies, aims to provide a technical solution to solve the above problems.

[0007] An online monitoring damping grease precise metering oil mechanism, comprising a liquid storage container, a power extrusion assembly, a visual monitoring assembly and a control assembly, the liquid storage container is used for storing damping grease, the power extrusion assembly is connected to one end of the liquid storage container, a flat channel is arranged at the other end of the liquid storage container, and the damping grease in the liquid storage container is extruded along the flat channel by the power of the power extrusion assembly; the visual monitoring assembly comprises a light source and a camera, the light source is arranged on one side of the flat channel and is used for providing illumination to the flat channel; the camera is arranged on the other side of the flat channel, and the camera is arranged opposite to the light source, the lens of the camera is directed to the center area of the flat channel, and is used for collecting dynamic images of the damping grease in the flat channel; the control assembly is provided with a central control module, the power extrusion assembly, the light source and the camera are electrically connected with the central control module, the central control module is built-in with an image processing algorithm, a motion control program and a volume compensation threshold value; When the central control module runs the image processing algorithm, the collected dynamic images are subjected to contour extraction to obtain a contour image pair containing a bubble contour and corresponding contour points; the contour points in the contour image pair are matched to obtain corresponding matching points; the corresponding points are subjected to feature information detection by a visual tool to obtain three-dimensional information of each corresponding point; the three-dimensional information is subjected to image reconstruction to obtain a three-dimensional image, image coordinates and volume of the bubble; When the central control module runs the motion control program, the power extrusion assembly is controlled to run based on a preset oil output, so that the liquid storage container extrudes a damping grease volume corresponding to the preset oil output; during and after the extrusion of the damping grease, the total volume of bubbles in the extruded grease is calculated according to the three-dimensional image, image coordinates and volume of the bubble, and it is determined whether the total volume is greater than the volume compensation threshold value; if it is greater, the power extrusion assembly is controlled to run again to extrude damping grease corresponding to the total volume of bubbles; the above determination and supplement operation are repeated until the total volume of bubbles is less than or equal to the volume compensation threshold value.

[0008] Preferably, the control assembly is further provided with a man-machine interaction interface, the preset oil output and the volume compensation threshold value are set through the man-machine interaction interface, and the value range of the volume compensation threshold value is 0.001 cm³-1 cm³.

[0009] Preferably, the central control module is also internally provided with a color depth processing algorithm, the central control module performs color recognition on the dynamic images captured by the camera, calculates the volume value of each bubble based on the color depth processing algorithm, and when the bubble volume value obtained based on the three-dimensional reconstruction of the stereoscopic image is inconsistent with the bubble volume value obtained by the color depth processing algorithm, it is determined that there is a bubble overlap causing the volume calculation deviation of the three-dimensional reconstruction, and at this time, the bubble volume value obtained by the color depth processing algorithm is taken as the actual volume value of the overlapping bubble group; when calculating the total volume of the bubbles, the central control module determines the actual volume of each bubble according to the above rules and then sums them up, and then controls the power extrusion assembly to perform a replenishment operation according to the total volume of the bubbles.

[0010] Preferably, the power extrusion assembly includes a first servo motor, a screw housing, a screw mechanism, and a piston rod, the screw housing is fixedly connected with the liquid storage container, the screw mechanism is arranged in the screw housing, the first servo motor is electrically connected with the central control module, the first servo motor is installed on the screw housing, and the first servo motor is power-connected with the screw mechanism, the piston rod is drivingly connected with the screw mechanism, and the piston rod is in abutting connection with the liquid storage container. The power extrusion assembly generates power through the first servo motor, and drives the piston rod to extrude the damping grease in the liquid storage container based on the screw mechanism.

[0011] Preferably, the fixed base plate is further provided, the screw housing is fixedly installed on the upper end of the fixed base plate, and the liquid storage container is installed on the lower end of the fixed base plate.

[0012] Preferably, one end of the fixed base plate is extended, and a material cutting and oil sealing mechanism is fixedly installed on the extended end of the fixed base plate. The material cutting and oil sealing mechanism includes a fixed base, a second servo motor installed on the fixed base, a pushing piece slidingly connected to the fixed base, a linkage mechanism arranged between the pushing piece and the second servo motor, a cover installed on the pushing piece, and a cutter installed on the pushing piece. The second servo motor is electrically connected with the central control module, the cover and the cutter are arranged in a spaced manner, and an extrusion position is formed between the cover and the cutter. The lower end of the flat channel forms an outlet, and the cover, the cutter, and the extrusion position act on the outlet by driving of the second servo motor.

[0013] Preferably, the fixed base includes a long plate fixedly connected to the lower end of the fixed base plate and a side opening shell installed on the lower end of the long plate. A linear guide rail is installed in the side opening shell, the pushing piece is slidingly connected to the side opening shell through the linear guide rail, and the second servo motor is installed on the side opening shell.

[0014] Preferably, the linkage mechanism includes a gear connected to the second servo motor and a rack fixed to the pushing piece. The second servo motor and the pushing piece are power-connected through the meshing of the gear and the rack.

[0015] Preferably, the pushing member comprises two long rods, a connecting rod connected between one end of the two long rods, and a cutter seat connected between the other end of the two long rods, the rack and the linear guide are fixed on the long rods, the cutter is fixed on the cutter seat, the cover is fixed between the two long rods, and the extrusion part is formed at the position between the cover and the cutter.

[0016] Preferably, the upper end of the cover is provided with a sealing ring, the lower end of the flat channel has a flange surface abutting against the cover, and the cover is sealed and matched with the flange surface through the sealing ring after abutting against the flange surface.

[0017] Compared with the prior art, the application has the following beneficial effects: The motion control program can accurately control the initial operation of the power extrusion assembly based on the preset oil output, ensure that the volume of the extruded grease matches the preset value initially, and lay the foundation for quantitative oil output; during and after the grease extrusion process, the program does not stop after completing the initial extrusion, but dynamically judges whether the extruded grease needs to be supplemented by combining the bubble volume data obtained through visual monitoring, calculating the size relationship between the total bubble volume and the volume compensation threshold, and calculating the size relationship between the total bubble volume and the volume compensation threshold. When the total bubble volume exceeds the standard, the power extrusion assembly immediately controls the corresponding volume of grease to be supplemented, and the determination and supplement operation is repeated until the bubble volume meets the requirements, effectively making up for the problem of insufficient actual effective grease amount caused by bubbles in the damping grease, solving the bottleneck of the influence of bubbles on the oil output precision in the prior art, and ensuring that the actual effective amount of the extruded damping grease is highly consistent with the preset oil output each time, meeting the strict demand of the grease quantitative precision in the batch production of dampers.

[0018] By setting the flat channel, the thickness dimension of the flat channel is much smaller than the width and length dimension, which can strictly limit the flow space of damping grease in the camera recognition direction. Due to the thin thickness of the channel, the physical space of the stacked overlapping bubbles in this direction is greatly compressed, not only reducing the generation of overlapping bubbles from the source, but also making the few possible overlapping bubbles form a shallow stack of two layers or less, avoiding the color depth signal confusion caused by multi-layer bubble overlap, allowing the color depth processing algorithm to quickly and accurately distinguish the overlap state through clear depth differences, providing a reliable image basis for subsequent volume value correction; Therefore, through the flat structure design, the thickness of the grease in the flow path is strictly limited, avoiding local accumulation, uneven flow rate or bubble retention of the grease, ensuring smooth and continuous extrusion of the grease driven by the power extrusion assembly, laying the foundation for accurate control of the preset oil output; The light source light uniformly penetrates the grease layer, reduces the light refraction and scattering interference, and at the same time focuses the camera on the grease area with a fixed thickness, which facilitates rapid and clear extraction of bubble profile and accurate collection of bubble dynamic characteristics, provides high-quality image data for three-dimensional reconstruction algorithm to accurately calculate the three-dimensional image, coordinates and volume of the bubble, effectively reduces the probability of bubble missed detection or contour recognition deviation, and then ensures that the central control module can accurately calculate the total volume of the bubble and execute targeted compensation, and finally improves the overall accuracy of quantitative oil output and the reliability of the mechanism operation.

[0019] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following and / or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description only constitute some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0021] Figure 1 is a structural schematic diagram of the present application; Figure 2 is a cross-sectional structural schematic diagram of the present application; Figure 3 is a structural schematic diagram of the material interruption and oil sealing mechanism and the liquid storage container in one view; Figure 4 is a structural schematic diagram of the material interruption and oil sealing mechanism and the liquid storage container in another view; Figure 5 is a circuit connection module block diagram of the present application; Figure 6 is a program flowchart of the present application; Figure 7 is another program flow chart of the present application.

[0022] The reference signs and names in the drawings are as follows: liquid storage container 10, flat channel 11, flange surface 12, power extrusion assembly 20, first servo motor 21, screw rod shell 22, screw rod mechanism 23, piston rod 24, light source 31, camera 32, central control module 33, human-computer interaction interface 34, fixed base plate 40, fixed base 51, long plate 511, side opening shell 512, linear guide rail 513, second servo motor 52, pushing piece 53, long rod 531, connecting rod 532, tool holder 533, linkage mechanism 54, gear 541, rack 542, cover 55, sealing ring 551, cutter 56. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the present application.

[0024] Please refer to Figures 1-6 In the embodiments of the present application, an online monitoring damping grease precise metering oil mechanism includes a liquid storage container 10, a power extrusion assembly 20, a visual monitoring assembly and a control assembly. The liquid storage container 10 is used for storing damping grease. The power extrusion assembly 20 is connected to one end of the liquid storage container 10. A flat channel 11 is arranged at the other end of the liquid storage container 10. The damping grease in the liquid storage container 10 is extruded along the flat channel 11 by the power of the power extrusion assembly 20. The visual monitoring assembly includes a light source 31 and a camera 32. The light source 31 is arranged on one side of the flat channel 11 and is used for providing illumination to the flat channel 11. The camera 32 is arranged on the other side of the flat channel 11. The camera 32 is arranged opposite to the light source 31. The lens of the camera 32 is directed to the center area of the flat channel 11 and is used for collecting dynamic images of the damping grease in the flat channel 11. The control assembly is provided with a central control module 33. The power extrusion assembly 20, the light source 31 and the camera 32 are electrically connected to the central control module 33. The central control module 33 is built-in with an image processing algorithm, a motion control program and a volume compensation threshold value. The central control module 33 extracts the profile of the collected dynamic image when running the image processing algorithm to obtain a profile image pair containing the profile of the bubble and the corresponding profile points; matches the profile points in the profile image pair to obtain the corresponding matching points; detects the feature information of the corresponding points using visual tools to obtain the three-dimensional information of each corresponding point; and reconstructs the three-dimensional information to obtain the three-dimensional image, image coordinates and volume of the bubble; When the central control module 33 runs the motion control program, the power extrusion assembly 20 is controlled to operate based on the preset oil output, so that the liquid storage container 10 extrudes the volume of damping grease corresponding to the preset oil output; during and after the extrusion of the damping grease, the total volume of the bubbles in the extruded grease is calculated according to the three-dimensional image, image coordinates and volume of the bubble, and it is determined whether the total volume is greater than the volume compensation threshold; if it is greater, the power extrusion assembly 20 is controlled to operate again to extrude the damping grease corresponding to the total volume of the bubbles; the above determination and supplement operations are repeated until the total volume of the bubbles is less than or equal to the volume compensation threshold.

[0025] When the online monitoring damping grease precise quantitative oiling mechanism works based on the image processing algorithm and the motion control program, the damping grease is first stored in the liquid storage container 10, and the power extrusion assembly 20 is driven by the central control module 33 to extrude the damping grease in the liquid storage container 10 along the flat channel 11 according to the preset oil output; during this process, the visual monitoring assembly starts to operate, the light source 31 on one side of the flat channel 11 provides stable illumination, and the camera 32 on the other side collects dynamic images of the damping grease in the channel in real time and transmits the images to the central control module 33; the central control module 33 obtains the three-dimensional image, image coordinates and volume of the bubble based on the image processing algorithm; then runs the motion control program, on the one hand, controls the initial operation of the power extrusion assembly 20 based on the preset oil output, and on the other hand, calculates the total volume of the bubbles in the extruded grease according to the bubble volume obtained by image processing during and after the extrusion of the grease, and compares it with the built-in volume compensation threshold; if the total volume of the bubbles is greater than the threshold, the central control module 33 controls the power extrusion assembly 20 to operate again to extrude the grease corresponding to the total volume of the bubbles; the above determination and supplement operations are repeatedly executed until the total volume of the bubbles is less than or equal to the volume compensation threshold, the power extrusion assembly 20 stops operating, and the precise quantitative extrusion of the damping grease is completed.

[0026] Therefore, the motion control program can accurately control the initial operation of the power extrusion assembly 20 based on the preset oil output, ensure that the extruded oil volume preliminarily matches the preset value, and lay the foundation for quantitative oil output; during and after the oil extrusion process, the program does not stop after completing the initial extrusion, but combines the bubble volume data obtained through visual monitoring to dynamically determine whether the extruded oil needs to be supplemented by calculating the size relationship between the total bubble volume and the volume compensation threshold. When the total bubble volume exceeds the threshold, the power extrusion assembly 20 is immediately controlled to supplement the corresponding volume of oil, and the determination and supplement operation is repeated until the bubble volume meets the requirements, effectively making up for the problem of insufficient actual effective oil volume caused by bubbles in the damping oil, solving the bottleneck of bubble affecting oil output precision in the prior art, and ensuring that the actual effective volume of the extruded damping oil is highly consistent with the preset oil output each time, meeting the strict requirements of damper batch production on oil quantitative precision.

[0027] In addition, the flat channel 11 is designed by flattening the structure, which not only strictly limits the thickness of the oil in the flow path, avoids local accumulation, uneven flow rate or bubble retention of the oil, and ensures smooth and continuous extrusion of the oil under the drive of the power extrusion assembly, laying the foundation for accurate control of the preset oil output; but also enables the light source light to uniformly penetrate the oil layer, reduces light refraction and scattering interference, and allows the camera to focus on the oil area with a fixed thickness, facilitating rapid and clear extraction of the bubble profile and accurate collection of the dynamic characteristics of the bubble, providing high-quality image data for the three-dimensional reconstruction algorithm to accurately calculate the three-dimensional image, coordinates and volume of the bubble, effectively reducing the probability of bubble missed detection or profile recognition deviation, and further ensuring that the central control module can accurately calculate the total bubble volume and perform targeted compensation, ultimately improving the overall precision of quantitative oil output and the reliability of the mechanism operation.

[0028] Please refer to Figure 7 On the basis of the above technical solutions, the central control module 33 further has a color depth processing algorithm built-in. The central control module 33 performs color recognition on the dynamic images collected by the camera 32, calculates the volume value of each bubble based on the color depth processing algorithm, and when the bubble volume value obtained based on the three-dimensional image reconstruction is inconsistent with the bubble volume value calculated by the color depth processing algorithm, it is determined that there is a volume calculation deviation caused by bubble overlap in the three-dimensional reconstruction. At this time, the bubble volume value obtained by the color depth processing algorithm is taken as the actual volume value of the overlapping bubble group. When calculating the total bubble volume, the central control module 33 sums up the actual volume of each bubble after determining the actual volume of each bubble according to the above rules, and then controls the power extrusion assembly 20 to perform the supplement operation according to the total bubble volume.

[0029] Specifically, the calculation process of the color depth processing algorithm is based on the color depth feature difference between the bubbles and the damping grease in the flat channel; first, the dynamic image collected by the camera 32 is preprocessed, including grayscale conversion, noise filtering and contrast enhancement, to highlight the color depth boundary of the bubble and grease area; then, based on the preset color depth threshold, that is, determined through offline calibration experiment, that is, the color depth interval corresponding to each of the single bubble, overlapping bubble and damping grease, the pixel-level color depth detection is performed on the preprocessed image, the target pixel area with a color depth value meeting the bubble feature is screened out, and the preliminary positioning of the bubble is completed; then, the target pixel area is subjected to connected component analysis, each independent bubble candidate area is marked, and the color depth mean value, peak value and gradient distribution feature of each area are extracted; thereafter, by comparing the standard color depth range of the single bubble with the actual color depth parameters of the candidate area, it is determined whether there is bubble overlap, if the color depth mean value of the candidate area is greater than the standard depth threshold of the single bubble, and the depth gradient presents a layered feature, it is determined that there is overlapping bubble; finally, based on the calibration relationship between the color depth and the bubble volume, the actual volume value of each bubble candidate area is calculated, and accurate bubble volume data is provided for the central control module 33.

[0030] In the further proposed technical solution, for the problem that when the bubbles overlap in the recognition direction of the camera, the three-dimensional reconstruction is easy to misjudge multiple overlapping bubbles as a single bubble, resulting in an underestimation of the bubble volume, the color depth processing algorithm is used to realize accurate recognition and volume correction of the overlapping bubbles. The color depth directly reflects the number of stacked layers of the bubbles in the recognition direction, and the volume value calculated based on this feature can exclude the overlapping interference, ensure the accuracy of the actual volume of a single bubble, and further ensure the calculation accuracy of the total bubble volume. Compared with the scheme relying only on three-dimensional reconstruction, the scheme further avoids the insufficient compensation caused by overlapping bubbles, and improves the reliability of quantitative oil discharge.

[0031] On this basis, combined with the structural design of the flat channel 11, a small amount of possible overlapping bubbles only form a shallow stack of 2 layers or less, avoiding the color depth signal confusion caused by multiple bubble overlaps, allowing the color depth processing algorithm to quickly and accurately distinguish the overlapping state based on the clear depth difference, and providing a reliable image basis for subsequent volume value correction.

[0032] On the basis of the above technical solution, it is further proposed that the control assembly is further provided with a human-computer interaction interface 34, and the preset oil discharge amount and volume compensation threshold are set through the human-computer interaction interface 34. The value range of the volume compensation threshold is 0.001 cm³-1 cm³. By using the volume compensation threshold in this range, the device can accurately supply lubricating oil, ensure the stability and uniformity of the quality of the produced medicine, effectively avoid the influence of oil discharge deviation on product quality, and improve the stability and reliability of oil discharge. Please refer toFigures 1-2 On the basis of the above technical solutions, further proposed power extrusion assembly 20 includes a first servo motor 21, screw housing 22, screw mechanism 23 and piston rod 24, screw housing 22 and liquid storage container 10 fixedly matched, screw mechanism 23 is arranged in the screw housing 22, the first servo motor 21 is electrically connected with the central control module 33, the first servo motor 21 is installed on the screw housing 22, and the first servo motor 21 is power connected with the screw mechanism 23, piston rod 24 is drivingly connected to the screw mechanism 23, and the piston rod 24 is in butt joint with the liquid storage container 10, the power extrusion assembly 20 generates power through the first servo motor 21, and the piston rod 24 is driven by the screw mechanism 23 to extrude the damping grease in the liquid storage container 10; through the first servo motor 21 cooperating with the screw mechanism 23, the moving stroke of the piston rod 24 can be accurately controlled, so that the basic amount of damping grease of the liquid storage container 10 is accurately controlled.

[0033] Please refer to Figures 1-2 On the basis of the above technical solutions, further proposed still includes fixed base plate 40, screw housing 22 is fixedly installed on the upper end of fixed base plate 40, liquid storage container 10 is installed on the lower end of fixed base plate 40, fixed base plate 40 is arranged between screw housing 22 and liquid storage container 10, which is mainly used for fixing effect, so that the damping grease accurate dosing mechanism can be fixed at a specific position, to realize the damping grease supply demand of fixed point.

[0034] Please refer to Figures 2-4On the basis of the above technical solutions, one end of the fixed base plate 40 is further extended, and based on this extension, a material cutting and oil sealing mechanism is fixedly installed at the extended end of the fixed base plate 40. The material cutting and oil sealing mechanism includes a fixed base 51, a second servo motor 52 installed on the fixed base 51, a pushing piece 53 slidingly connected to the fixed base 51, a linkage mechanism 54 arranged between the pushing piece 53 and the second servo motor 52, a cover 55 installed on the pushing piece 53, and a cutter 56 installed on the pushing piece 53. The second servo motor 52 is electrically connected to the central control module 33. The cover 55 is arranged in a spaced manner with the cutter 56, and an extrusion position is formed between the cover 55 and the cutter 56. The lower end of the flat channel 11 forms an outlet, and the cover 55, the cutter 56, and the extrusion position are driven by the second servo motor 52 to act on the outlet. The fixed base 51 can correspond the position of the pushing piece 53 to the outlet position of the flat channel 11. The second servo motor 52 cooperates with the linkage mechanism 54 to drive the pushing piece 53 slidingly connected to the fixed base 51. Three point positions are set for the travel of the pushing piece 53, so that the cutter 56, the cover 55, and the extrusion position can be arranged on the pushing piece 53 at the same time. When not in use, the outlet is blocked by the cover 55 to prevent the damping grease from slowly leaking out. When the damping grease needs to be extruded, the cover 55 is quickly opened, the pushing piece 53 is moved to the extrusion position corresponding to the outlet, and after the preset amount of damping grease is extruded, the pushing piece 53 is controlled to cut off the damping grease at the outlet by the cutter 56. The cutter 56 can keep the damping grease in the outlet flat after cutting, ensuring the accuracy of the extruded amount of damping grease. In addition, due to the structural constraints, the setting position of the camera 32 is difficult to detect the damping grease at the outlet plane, or there is a certain distance from the dynamic image area captured by the camera 32 to the outlet. When the damping grease is extruded, the image processing algorithm and the motion control program need to determine the extruded damping grease corresponding to the dynamic image according to the extrusion speed, so as to eliminate the distance and further improve the accuracy of the basic amount of damping grease.

[0035] Please refer to Figures 2-4On the basis of the above technical scheme, further proposed fixed base 51 includes fixedly connected to the lower end of the fixed base plate 40 long plate 511 and installed in the lower end of the long plate 511 side opening shell 512, long plate 511 for extension and side opening shell 512 are connected, the inside of the side opening shell 512 is installed with linear guide rail 513, pusher 53 is slidably connected with the side opening shell 512 through the linear guide rail 513, the second servo motor 52 is installed on the side opening shell 512;Side opening shell 512 can protect linear guide rail 513 and linkage mechanism 54, prevent dust from adhering to affect the sliding accuracy of pusher 53, thereby to a certain extent, the air tightness of the cover 55 and the opening and the accuracy of the cutter 56 are guaranteed. Linkage mechanism 54 includes gear 541 connected to second servo motor 52 and rack 542 fixed on pusher 53, second servo motor 52 and pusher bar are connected through the meshing of gear 541 and rack 542;Through the meshing of gear 541 and rack 542, linkage mechanism 54 is set, combined with second servo motor 52, can simply and compactly drive pusher 53 to realize the movement of three stroke points, which is simple in structure and convenient for integration beside the liquid storage container 10. Pusher 53 includes two long rods 531, a connecting rod 532 connected between one end of the two long rods 531, and a cutter holder 533 connected between the other end of the two long rods 531, the rack 542 and the linear guide rail 513 are fixed on the long rod 531, the cutter 56 is fixed on the cutter holder 533, the cover 55 is fixed between the two long rods 531, and the position between the cover 55 and the cutter 56 forms an extrusion part;The structure of the two long rods 531 can form a structure relationship with the flat channel 11, and the cutter 56 can be precisely matched with the flat channel 11 by combining the cutter holder 533 to install the cutter 56;On the basis, a sealing ring 551 is arranged at the upper end of the cover 55, the lower end of the flat channel 11 has a flange surface 12 abutting the cover 55, and the cover 55 is sealed and matched with the flange surface 12 after abutting, which can ensure that the cover 55 is sealed and matched with the outlet of the flat channel 11, and the edge of the flange surface 12 is chamfered, which can guide the cover 55 and the cutter 56 to the flange surface 12, so that the outlet position can be more accurately matched with the cutter 56 and the cover 55, thereby further improving the accuracy of the damping grease supply.

[0036] It is obvious to those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.

Claims

1. A mechanism for precise quantitative dispensing of damping grease under online monitoring, characterized in that, The system includes a liquid storage container (10), a power extrusion assembly (20), a vision monitoring assembly, and a control assembly. The liquid storage container (10) is used to store damping grease. The power extrusion assembly (20) is connected to one end of the liquid storage container (10). A flat channel (11) is provided at the other end of the liquid storage container (10). The liquid storage container (10) uses the power of the power extrusion assembly (20) to extrude the damping grease inside along the flat channel (11). The vision monitoring assembly includes a light source (31) and a camera (32). The light source (31) is located on one side of the flat channel (11) and is used to illuminate the flat channel. Light is provided inside the channel (11); a camera (32) is set on the other side of the flat channel (11), and the camera (32) is set opposite to the light source (31). The lens of the camera (32) is facing the central area of ​​the flat channel (11) to collect dynamic images of the damping grease inside the flat channel (11); the control component is equipped with a central control module (33). The power extrusion component (20), the light source (31) and the camera (32) are electrically connected to the central control module (33) respectively. The central control module (33) has built-in image processing algorithms, motion control programs and volume compensation thresholds. When the central control module (33) runs the image processing algorithm, it extracts the contours of the acquired dynamic images to obtain a pair of contour images containing the bubble contour and the corresponding contour points; it matches the contour points in the contour image pair to obtain the matching corresponding points; it uses visual tools to detect the feature information of the corresponding points to obtain the three-dimensional information of each corresponding point; it reconstructs the three-dimensional information to obtain the three-dimensional solid image, image coordinates and volume of the bubble. When the central control module (33) runs the motion control program, it controls the operation of the power extrusion component (20) based on the preset oil output volume, so that the liquid storage container (10) extrudes the damping grease volume corresponding to the preset oil output volume; during and after the extrusion of the damping grease, the total volume of the bubbles in the extruded grease is calculated based on the three-dimensional image, image coordinates and volume of the bubbles, and it is determined whether the total volume is greater than the volume compensation threshold. If it is greater, a supplementary operation is performed. At this time, the power extrusion component (20) is controlled to run again to supplement the extrusion of damping grease corresponding to the total volume of the bubbles; the above determination and supplementary operation are repeated until the total volume of the bubbles is less than or equal to the volume compensation threshold.

2. The online monitoring mechanism for precise quantitative dispensing of damping grease according to claim 1, characterized in that, The control component is also equipped with a human-machine interface (34). The preset oil output and volume compensation threshold are set through the human-machine interface (34). The value range of the volume compensation threshold is 0.001cm³-1cm³.

3. The online monitoring mechanism for precise quantitative dispensing of damping grease according to claim 1, characterized in that, The central control module (33) also has a built-in color depth processing algorithm. The central control module (33) performs color recognition on the dynamic image captured by the camera (32). Based on the color depth processing algorithm, it calculates the volume value of each bubble. When the bubble volume value obtained based on the reconstruction of the three-dimensional image is inconsistent with the bubble volume value calculated by the color depth processing algorithm, it is determined that there is bubble overlap, which causes the volume calculation deviation of the three-dimensional reconstruction. At this time, the bubble volume value obtained by the color depth processing algorithm is used as the actual volume value of the overlapping bubble group. When calculating the total bubble volume, the central control module (33) determines the actual volume of each bubble according to the above rules and then sums them up. Then, it controls the power extrusion component (20) to perform supplementary operations based on the total bubble volume.

4. The online monitoring mechanism for precise quantitative dispensing of damping grease according to claim 1, characterized in that, The power extrusion assembly (20) includes a first servo motor (21), a lead screw housing (22), a lead screw mechanism (23), and a piston rod (24). The lead screw housing (22) is fixedly fitted with the liquid storage container (10). The lead screw mechanism (23) is located inside the lead screw housing (22). The first servo motor (21) is electrically connected to the central control module (33). The first servo motor (21) is mounted on the lead screw housing (22) and is poweredly connected to the lead screw mechanism (23). The piston rod (24) is drivenly connected to the lead screw mechanism (23) and is mated with the liquid storage container (10). The power extrusion assembly (20) generates power through the first servo motor (21) and drives the piston rod (24) based on the lead screw mechanism (23) to perform an extrusion operation on the damping grease in the liquid storage container (10).

5. The online monitoring mechanism for precise quantitative dispensing of damping grease according to claim 4, characterized in that, It also includes a fixed base plate (40), a lead screw housing (22) fixedly installed on the upper end of the fixed base plate (40), and a liquid storage container (10) installed on the lower end of the fixed base plate (40).

6. The online monitoring mechanism for precise quantitative dispensing of damping grease according to claim 5, characterized in that, One end of the fixed base plate (40) is extended, and a material cutting and sealing mechanism is fixedly installed at the extended end of the fixed base plate (40). The material cutting and sealing mechanism includes a fixed base (51), a second servo motor (52) mounted on the fixed base (51), a pusher (53) slidably connected to the fixed base (51), a linkage mechanism (54) disposed between the pusher (53) and the second servo motor (52), a cover (55) mounted on the pusher (53), and a cutter (56) mounted on the pusher (53). The second servo motor (52) is electrically connected to the central control module (33). The cover (55) and the cutter (56) are spaced apart, and an extrusion part is formed between the cover (55) and the cutter (56). The lower end of the flat channel (11) forms an outlet. The cover (55), the cutter (56) and the extrusion part are driven by the second servo motor (52) to act on the outlet.

7. The online monitoring mechanism for precise quantitative dispensing of damping grease according to claim 6, characterized in that, The fixed base (51) includes a long plate (511) fixedly connected to the lower end of the fixed base plate (40) and a side opening shell (512) installed at the lower end of the long plate (511). A linear guide rail (513) is installed inside the side opening shell (512). The pusher (53) is slidably connected to the side opening shell (512) through the linear guide rail (513). The second servo motor (52) is installed on the side opening shell (512).

8. The online monitoring mechanism for precise quantitative dispensing of damping grease according to claim 7, characterized in that, The linkage mechanism (54) includes a gear (541) connected to the second servo motor (52) and a rack (542) fixed to the pusher (53). The second servo motor (52) and the pusher are connected by the meshing of the gear (541) and the rack (542).

9. The online monitoring mechanism for precise quantitative dispensing of damping grease according to claim 8, characterized in that, The pusher (53) includes two long rods (531), a connecting rod (532) connected between one end of the two long rods (531), and a cutter holder (533) connected between the other end of the two long rods (531). The rack (542) and the linear guide (513) are both fixed on the long rods (531). The cutter (56) is fixed on the cutter holder (533). The cap (55) is fixed between the two long rods (531). The position of the two long rods (531) between the cap (55) and the cutter (56) forms the extrusion part.

10. A precise quantitative oil dispensing mechanism for damping grease under online monitoring according to any one of claims 6-9, characterized in that, The upper end of the cover (55) is provided with a sealing ring (551), and the lower end of the flat channel (11) has a flange face (12) that abuts against the cover (55). After the cover (55) and the flange face (12) are abutted, they are sealed by the sealing ring (551).

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