A cleanliness extraction device

Abstract

The present application belongs to the technical field of cleanliness detection, and particularly relates to a cleanliness extraction device, which comprises a machine box, a cleaning chamber arranged in the machine box, a flow guide hopper arranged at the lower part of the cleaning chamber, a cleaning frame arranged at the top of the flow guide hopper, a cleaning system arranged at the upper part of the cleaning chamber, a filter system arranged at the rear, a turnover clamping assembly arranged in the middle, the turnover clamping assembly comprising two groups of symmetrically distributed hydraulic cylinders and clamping jaws, the clamping jaws being fixed to the output shafts of the hydraulic cylinders, and the two hydraulic cylinders being connected through a transmission mechanism; during cleaning, the parts are clamped between the two clamping jaws, the parts are driven to rotate through the transmission mechanism, and the two clamping jaws are controlled to be loosened in turn by a control system, so that the clamping positions of the parts are exposed for cleaning. The present application realizes omnibearing and dead angle-free cleaning of the parts, significantly improves the cleaning efficiency and detection accuracy, and has high automation degree.

Description

Technical Field

[0001] This invention relates to the field of cleanliness testing technology, and more particularly to a cleanliness extraction device. Background Technology

[0002] Cleanliness particle extractors are commonly used to remove as many particles as possible from the surface of parts and collect them effectively. They have the advantages of minimal impact from the external environment on the product, high recycling rate of cleaning solution, and improved detection efficiency. Particulate contaminants on the surface of parts can be collected on the filter membrane in a timely manner. Once the parts are cleaned, a filter membrane sample can be obtained for subsequent testing.

[0003] In existing technologies, such as Chinese Patent Publication No. CN222433272U, an automatic feeding mechanism for a cleanliness extraction device is disclosed. This mechanism uses a drive chain to automatically transport the mounting frame and components to the area below the nozzle for rinsing. Another example is Chinese Patent Publication No. CN223405489U, which discloses a fully automatic cleanliness extraction device. Through the cooperation of the cleaning tank assembly, sliding plate, clamping plate, and moving components, the parts in the cleaning tank assembly can be tumbled, facilitating the nozzle to rinse different surfaces. While these existing technologies achieve a degree of automated cleaning, they all have limitations. The former, although achieving automatic transport, has relatively fixed parts positions during rinsing, making it difficult to ensure that all surfaces, especially the bottom and clamping areas, are thoroughly cleaned. The latter changes the rinsing surface by tumbling parts, but for parts with irregular shapes or shifted centers of gravity, the tumbling process may cause impact or instability.

[0004] In the field of traditional cleanliness extraction equipment, the cleaning process for parts often relies on manual operation. Specifically, when cleaning parts, workers typically need to wear gloves in front of the cleanliness extraction equipment, holding the part with one hand while operating the nozzle for rinsing with the other. While this avoids the problems mentioned in the patent, it is inefficient and makes it difficult for manual handling of large parts. Therefore, a cleanliness extraction device that is highly efficient and provides comprehensive cleaning is proposed. Summary of the Invention

[0005] Based on the technical problems existing in the prior art, the present invention proposes a cleanliness extraction device.

[0006] This invention proposes a cleanliness extraction device, comprising a chassis, a cleaning chamber within the chassis, a guide bucket installed at the lower part of the cleaning chamber, a cleaning frame installed at the top of the guide bucket, a cleaning system installed at the upper part of the cleaning chamber, a filtration system installed at the rear of the cleaning chamber, and a flip-grip assembly installed in the middle of the cleaning chamber. The flip-grip assembly includes two symmetrically distributed hydraulic cylinders and grippers, the grippers being fixed to the output shafts of the hydraulic cylinders, and the two hydraulic cylinders being connected by a transmission mechanism. During the cleaning process, the control system controls the two grippers to alternately release their grip on the parts, thereby exposing the gripping parts of the parts and the contact parts between the grippers and the parts for cleaning.

[0007] Preferably, the transmission mechanism includes a dual-axis motor, synchronous pulleys, a rotating shaft support, and a synchronous belt. The dual-axis motor is fixed on the rear wall of the cleaning chamber, and the two rotating shaft supports are respectively installed on the two side walls of the cleaning chamber. The hydraulic cylinder is installed at the end of the rotating shaft support, and the multiple synchronous pulleys are installed on the rotating shaft support and the output shaft of the dual-axis motor. The synchronous belt connects two synchronous pulleys that correspond to a set.

[0008] Preferably, the control system includes a controller, a human-machine interface electrically connected to the controller, and a clamping force sensor electrically connected to the controller; the clamping force sensor is disposed on the gripper and is used to detect the clamping force of the gripper on the part in real time; the controller controls the hydraulic cylinder to adjust the output pressure according to a preset clamping force threshold, and provides dynamic compensation when the gripper is released and clamped.

[0009] Preferably, the control system further includes an image recognition module electrically connected to the controller. The image recognition module is located in the cleaning chamber and is used to collect image information of the parts on the grippers. The controller identifies the type and size of the parts based on the image information and automatically matches and sets the spray pressure, spray time, and alternating opening and closing frequency of the cleaning system based on a preset cleaning parameter database.

[0010] Preferably, the control system further includes a flow monitoring module and a pressure monitoring module electrically connected to the controller. The flow monitoring module and pressure monitoring module are installed on the pipeline of the cleaning system and are used to monitor the flow rate and pressure of the cleaning fluid in real time. The controller compares the real-time monitored flow rate and pressure data with preset standard parameters. When an abnormality occurs, it issues an alarm prompt and automatically adjusts the working status of the pumps and valves of the cleaning system to maintain the stability of the cleaning parameters.

[0011] Preferably, the cleaning system includes multiple sets of nozzles with different angles, and the spray angle of the nozzles is adjustable; the controller automatically adjusts the spray angle of the nozzles according to the part type and size identified by the image recognition module; the rotation speed of the flipping clamping assembly is dynamically adjusted by the controller according to the weight and size information of the parts.

[0012] Preferably, the control system further includes a cleaning fluid temperature monitoring module and a heating module electrically connected to the controller. The heating module is used to heat the cleaning fluid. The controller controls the working state of the heating module according to a preset cleaning temperature curve to maintain the cleaning fluid temperature within the optimal extraction temperature range.

[0013] Preferably, the human-machine interface is used to input or select the model of the part to be cleaned, set the cleaning process parameters, and display the current operating status of the equipment, cleaning parameter curves, and fault information in real time; the controller is equipped with a storage module to record historical data for each cleaning and supports data export and traceability through the human-machine interface.

[0014] Preferably, the filtration system includes multiple filtration units arranged in parallel, with each filtration unit connected by a switching valve; the controller automatically controls the opening and closing of the switching valve according to pressure changes during the cleaning process, thereby realizing online switching and backwashing of the filtration units.

[0015] Compared with the prior art, the present invention provides a cleanliness extraction device, which has the following beneficial effects: 1. By setting up a flip-grip assembly and adopting a control strategy of alternately releasing two grippers, the clamping parts of the parts and the contact parts between the grippers and the parts can be exposed and cleaned during the cleaning process, completely eliminating cleaning dead corners and significantly improving the accuracy of cleanliness detection.

[0016] 2. By setting up a control system, the cleaning parameters, clamping force, rotation speed and spray angle can be automatically matched and adjusted according to the type, size and weight of the parts, realizing the automation and intelligence of the cleaning process, greatly improving cleaning efficiency and consistency, and reducing the difficulty of manual operation.

[0017] 3. By setting up flow monitoring, pressure monitoring, and temperature monitoring modules, real-time monitoring and dynamic adjustment of the cleaning process are achieved, ensuring the stability and repeatability of cleaning parameters and guaranteeing the reliability of cleaning quality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal first angle structure of the present invention; Figure 3 This is a schematic diagram of the internal second angle structure of the present invention; Figure 4 This is a schematic diagram of the flip-grip assembly structure of the present invention; Figure 5 This is a block diagram of the control system principle of the present invention.

[0019] In the diagram: 1. Chassis; 11. Cleaning chamber; 12. Observation door; 2. Cleaning rack; 3. Flow guide bucket; 4. Filtration system; 5. Cleaning system; 6. Tilting clamping assembly; 61. Hydraulic cylinder; 62. Gripper; 63. Transmission mechanism; 631. Dual-axis motor; 632. Synchronous pulley; 633. Rotary shaft support; 634. Synchronous belt; 7. Control system; 71. Controller; 72. Human-machine interface; 73. Clamping force sensor; 74. Image recognition module; 75. Flow monitoring module; 76. Pressure monitoring module; 77. Temperature monitoring module; 78. Heating module. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0022] Example 1, referring to Figures 1-4 A cleanliness extraction device includes a housing 1, a cleaning chamber 11 inside the housing 1, an observation door 12 at the front of the cleaning chamber 11, a guide bucket 3 installed at the lower part of the cleaning chamber 11, a cleaning rack 2 installed at the top of the guide bucket 3, a cleaning system 5 installed at the upper part of the cleaning chamber 11, a filtration system 4 installed at the rear of the cleaning chamber 11, and a flipping clamping assembly 6 installed in the middle of the cleaning chamber 11.

[0023] The flipping clamping assembly 6 includes two symmetrically distributed sets of hydraulic cylinders 61 and grippers 62. The grippers 62 are fixed to the output shaft of the hydraulic cylinders 61. The two hydraulic cylinders 61 are connected by a transmission mechanism 63, so that the part is clamped between the two grippers 62. The specific structure of the transmission mechanism 63 includes a dual-axis motor 631, synchronous pulleys 632, a rotating shaft support 633, and a synchronous belt 634. The dual-axis motor 631 is fixed to the rear wall of the cleaning chamber 11. The two rotating shaft supports 633 are respectively installed on the two side walls of the cleaning chamber 11. The hydraulic cylinders 61 are correspondingly installed at the ends of the rotating shaft supports 633. Multiple synchronous pulleys 632 are correspondingly installed on the rotating shaft supports 633 and the output shaft of the dual-axis motor 631. The synchronous belt 634 connects the two synchronous pulleys 632 of the corresponding set.

[0024] When the dual-axis motor 631 starts, its output shafts at both ends rotate synchronously. Through the transmission of the synchronous pulley 632 and the synchronous belt 634, the rotating shaft supports 633 on both sides rotate synchronously. Since the hydraulic cylinder 61 is fixedly installed at the end of the rotating shaft support 633, the hydraulic cylinder 61 and its gripper 62 also rotate synchronously. This transmission method ensures the coaxiality and stability of the parts during the flipping process, avoids additional torsional stress on the parts caused by asynchronous rotation on both sides, and ensures that large or irregular parts can rotate smoothly.

[0025] The operating process of this equipment is as follows: The operator opens the observation door 12, places the part to be cleaned between the two grippers 62, and controls the hydraulic cylinder 61 to clamp the part using the control system 7. Then, the observation door 12 is closed, and the cleaning system 5 is started. The nozzles in the cleaning system 5 begin spraying cleaning fluid onto the part. At the same time, the dual-axis motor 631 starts, driving the entire tilting and clamping assembly 6 and the part to rotate slowly together, so that the cleaning fluid can be evenly rinsed onto all surfaces of the part.

[0026] The core of this embodiment lies in the fact that, during the cleaning process, the control system 7 controls the two hydraulic cylinders 61 to alternately release their grip on the part according to a preset program. For example, at the 10th second of cleaning, the left hydraulic cylinder 61 briefly depressurizes, causing the left gripper 62 to release the part, leaving the part only gripped by the right gripper 62. Since the right gripper 62 remains clamped and the entire assembly is still rotating, the part will not fall off. After the left gripper 62 releases, the left clamping part of the part, which was previously covered by the left gripper 62, and the contact surface between the left gripper 62 and the part are exposed to the spray range of the cleaning fluid, receiving thorough rinsing. This process lasts for 2-3 seconds, after which the left hydraulic cylinder 61 repressurizes and clamps the part. Subsequently, at the next time point, the right hydraulic cylinder 61 also briefly depressurizes, causing the right gripper 62 to release, exposing the right clamping part of the part for cleaning. This cycle repeats until the entire cleaning process is completed. This alternating clamping and loosening strategy perfectly solves the problem of the clamping parts not being able to be cleaned in the above clamping methods, achieving true 360-degree cleaning of parts without dead angles.

[0027] The waste liquid generated during the cleaning process flows into the guide bucket 3 below through the cleaning rack 2, and is then collected in the guide bucket 3 and sent to the filtration system 4 for purification. The treated cleaning liquid can be recycled, saving resources.

[0028] Example 2, refer to Figure 5 Based on Embodiment 1, the control system 7 in this embodiment includes a controller 71, a human-machine interface 72 electrically connected to the controller 71, a clamping force sensor 73, an image recognition module 74, a flow monitoring module 75, a pressure monitoring module 76, a temperature monitoring module 77, and a heating module 78. This enables the equipment to have a higher level of automation and intelligence.

[0029] The human-machine interface 72 can be a touchscreen, allowing operators to input or select the model of the parts to be cleaned, set cleaning process parameters, and simultaneously display the real-time operating status of the equipment, such as parameter curves for clamping force, rotation speed, spray pressure, flow rate, and temperature, as well as any fault information. The controller 71 has an internal storage module for recording historical data from each cleaning cycle, including part model, cleaning time, and cleaning parameters. It supports exporting data via USB or transferring it over a network through the human-machine interface 72, facilitating quality management and process traceability.

[0030] A clamping force sensor 73 is mounted on the gripper 62 to detect the clamping force of the gripper 62 on the part in real time. During the alternating clamping process in Embodiment 1, when one gripper 62 releases, the other gripper 62 needs to bear the entire weight of the part and the centrifugal force generated by rotation. Without dynamic adjustment, this may cause the part to slip or become unstable. In this embodiment, the controller 71 controls the hydraulic cylinder 61 to adjust its output pressure in real time according to a preset clamping force threshold. For example, when the left gripper 62 releases, the controller 71 instructs the right hydraulic cylinder 61 to appropriately increase its output pressure, providing a greater clamping force to compensate and ensure part stability; and when the left gripper 62 re-clamps, the pressure of the right hydraulic cylinder 61 returns to its normal value. This dynamic clamping force compensation mechanism ensures stable clamping of the part during rotation and avoids damaging the part surface by continuously using excessive clamping force, making it particularly suitable for precision parts with high surface accuracy requirements.

[0031] The image recognition module 74, which can be a high-definition camera, is installed inside the cleaning chamber 11 to capture image information of the parts on the grippers 62. The controller 71 has a built-in image processing algorithm that can automatically identify the type, shape, and approximate size of the parts based on the captured image information. Based on the recognition results, the controller 71 queries its internal preset cleaning parameter database to automatically match and set the optimal cleaning process parameters. For example, gear parts may require higher spray pressure and longer cleaning time; while housing parts may require a larger spray angle and moderate pressure. The controller 71 automatically sets the spray pressure, spray time, and alternating opening and closing frequency of the grippers 62 in the cleaning system 5, eliminating the need for manual settings and greatly simplifying the operation process, improving efficiency and accuracy.

[0032] In addition, the cleaning system 5 includes multiple sets of nozzles at different angles, and the spray angle of the nozzles can be electrically adjusted. The controller 71 automatically adjusts the spray angle of each set of nozzles based on the part type and size identified by the image recognition module 74, ensuring optimal coverage of the complex surface of the part and guaranteeing thorough cleaning. Simultaneously, the rotation speed of the flip-grip assembly 6 is also dynamically adjusted by the controller 71 based on the weight and size information of the part. When a part is identified as heavy, the controller 71 reduces the rotation speed to ensure smooth rotation and prevent the part from slipping due to excessive centrifugal force; when the part is small, the controller 71 appropriately increases the rotation speed to increase the number of times the part surface is rinsed per unit time, thereby improving cleaning efficiency.

[0033] Flow monitoring module 75 and pressure monitoring module 76 are installed on the pipeline of cleaning system 5 to monitor the flow rate and pressure of the cleaning fluid in real time. Temperature monitoring module 77 and heating module 78 are used to monitor and regulate the temperature of the cleaning fluid. During the cleaning process, controller 71 compares the real-time monitored flow rate, pressure, and temperature data with preset standard parameters. If the actual flow rate or pressure deviates from the set value (e.g., pressure increase due to nozzle blockage), controller 71 will immediately issue an alarm on the interface and automatically adjust the working status of the pumps and valves in cleaning system 5 according to the deviation, such as increasing the pump speed or adjusting the bypass valve opening, to maintain the stability of cleaning parameters and ensure consistent cleaning results. Similarly, for temperature, controller 71 controls the start / stop or heating power of heating module 78 according to the preset cleaning temperature curve to keep the cleaning fluid temperature within the optimal extraction temperature range, which is crucial for the removal of certain temperature-sensitive greases or contaminants.

[0034] The filtration system 4 includes multiple filtration units arranged in parallel, such as a primary coarse filter and a secondary fine filter, with each filtration unit connected by an electrically operated switching valve. As cleaning progresses, the filtration units gradually become clogged, leading to an increase in the pressure difference between the inlet and outlet of the filtration system 4. The controller 71 monitors pressure changes and automatically controls the switching valve to disconnect the disconnected filtration unit from the main circuit when the pressure difference of a particular filtration unit exceeds a set threshold, while simultaneously switching in a backup filtration unit. For the disconnected filtration unit, the controller 71 can control the backwashing system to backwash it, removing internal contaminants, restoring its filtration capacity, and preparing it for the next use. This automatic switching and backwashing function ensures that the filtration system 4 can operate continuously and efficiently for a long time, eliminating the need for frequent manual maintenance shutdowns, significantly reducing equipment downtime, and improving equipment utilization.

[0035] In summary, by combining mechanical structure design and control system 7, this invention provides a cleanliness extraction device that can achieve all-round, no-dead-angle cleaning of parts, and is highly automated and intelligent, significantly improving the efficiency and accuracy of cleanliness detection.

[0036] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A cleanliness extraction device, comprising a casing (1), wherein a cleaning chamber (11) is provided inside the casing (1), a guide bucket (3) is installed at the lower part of the cleaning chamber (11), a cleaning rack (2) is installed at the top of the guide bucket (3), a cleaning system (5) is installed at the upper part of the cleaning chamber (11), and a filtration system (4) is installed at the rear of the cleaning chamber (11), characterized in that, A flip-grip assembly (6) is installed in the middle of the cleaning chamber (11); the flip-grip assembly (6) includes two sets of symmetrically distributed hydraulic cylinders (61) and grippers (62), the grippers (62) are fixed to the output shaft of the hydraulic cylinders (61), and the two hydraulic cylinders (61) are connected by a transmission mechanism (63); during the cleaning process, the control system (7) controls the two grippers (62) to release the gripping of the parts in turn, so as to expose the gripping part of the parts and the contact part between the grippers (62) and the parts for cleaning.

2. A cleanliness extraction apparatus according to claim 1, wherein The transmission mechanism (63) includes a dual-axis motor (631), synchronous pulleys (632), a rotating shaft support (633), and a synchronous belt (634). The dual-axis motor (631) is fixed on the rear wall of the cleaning chamber (11). The two rotating shaft supports (633) are respectively installed on the two side walls of the cleaning chamber (11). The hydraulic cylinder (61) is installed at the end of the rotating shaft support (633). The multiple synchronous pulleys (632) are installed on the rotating shaft support (633) and the output shaft of the dual-axis motor (631). The synchronous belt (634) connects two synchronous pulleys (632) that correspond to a set.

3. A cleanliness extraction apparatus according to claim 1, wherein The control system (7) includes a controller (71), a human-machine interface (72) electrically connected to the controller (71), and a clamping force sensor (73) electrically connected to the controller (71). The clamping force sensor (73) is installed on the gripper (62) and is used to detect the clamping force of the gripper (62) on the part in real time. The controller (71) controls the hydraulic cylinder (61) to adjust the output pressure according to the preset clamping force threshold, and provides dynamic compensation when the gripper (62) is released and clamped.

4. The cleanliness extraction device according to claim 3, characterized in that, The control system (7) further includes an image recognition module (74) electrically connected to the controller (71). The image recognition module (74) is located in the cleaning chamber (11) and is used to collect image information of the parts on the grippers (62). The controller (71) identifies the type and size of the parts based on the image information and automatically matches and sets the spray pressure, spray time and the alternating opening and closing frequency of the grippers (62) of the cleaning system (5) based on a preset cleaning parameter database.

5. A cleanliness extraction apparatus according to claim 3, wherein The control system (7) further includes a flow monitoring module (75) and a pressure monitoring module (76) electrically connected to the controller (71). The flow monitoring module (75) and the pressure monitoring module (76) are installed on the pipeline of the cleaning system (5) to monitor the flow rate and pressure of the cleaning fluid in real time. The controller (71) compares the real-time monitored flow rate and pressure data with preset standard parameters. When an abnormality occurs, it issues an alarm prompt and automatically adjusts the working state of the pump valve of the cleaning system (5) to maintain the stability of the cleaning parameters.

6. A cleanliness extraction apparatus according to claim 4, wherein The cleaning system (5) includes multiple sets of nozzles with different angles, and the spray angle of the nozzles is adjustable; the controller (71) automatically adjusts the spray angle of the nozzles according to the part type and size identified by the image recognition module (74); the rotation speed of the flip clamping assembly (6) is dynamically adjusted by the controller (71) according to the weight and size information of the part.

7. A cleanliness extraction apparatus according to claim 3, wherein The control system (7) further includes a cleaning fluid temperature monitoring module (77) and a heating module (78) electrically connected to the controller (71). The heating module (78) is used to heat the cleaning fluid. The controller (71) controls the working state of the heating module (78) according to the preset cleaning temperature curve so that the cleaning fluid temperature is maintained within the optimal extraction temperature range.

8. A cleanliness extraction apparatus according to claim 3, wherein The human-machine interface (72) is used to input or select the model of the part to be cleaned, set the cleaning process parameters, and display the current operating status of the equipment, cleaning parameter curves and fault information in real time. The controller (71) is equipped with a storage module to record historical data for each cleaning and supports data export and traceability through the human-machine interface (72).

9. A cleanliness extraction apparatus according to claim 3, wherein The filtration system (4) includes multiple filtration units arranged in parallel, and the filtration units at each level are connected by switching valves; the controller (71) automatically controls the opening and closing of the switching valves according to the pressure changes during the cleaning process, so as to realize the online switching and backwashing of the filtration units.

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