An ultrasonic cleaning system for length standard

Abstract

The present invention relates to an ultrasonic cleaning system, and in particular to an ultrasonic cleaning system suitable for gauge blocks. The ultrasonic cleaning system is mainly composed of an ultrasonic cleaning station, a drying station, an oil immersion station, a station transfer machine, a gauge block cleaning fixture, a station platform, a calibration platform and a system housing. The ultrasonic cleaning station includes three processes: pre-spraying, ultrasonic cleaning and flushing. The station transfer machine includes a transverse axis guide rail, a transverse axis bracket, a horizontal cross arm, a lifting arm and a mechanical gripper to move the cleaning fixture between stations. The drying station uses dry hot air to remove residual moisture, and its box door is controlled by an air pump. The present invention is designed in combination with the calibration process, and solves a series of problems existing in the traditional cleaning of length standards, such as low efficiency and harm to the physical and mental health of calibration personnel, while ensuring high cleaning efficiency.

Description

Technical Field

[0001] The invention relates to an ultrasonic cleaning system for a length standard, in particular to an ultrasonic cleaning system suitable for a gauge block. Background Art

[0002] Length standards are high-precision measuring tools that define, maintain and reproduce length units. Their lengths are the length standards of measuring instruments. By verifying the indication errors of measuring instruments, measuring tools and gauges, the dimensions of various products in mechanical processing can be traced back to the length standard.

[0003] As the most widely used measuring instrument in the field of metrology and engineering measurement worldwide, the gauge block has strict requirements on its preservation and cleaning process. Most length standards are made of steel. Improper preservation and cleaning will cause oxidation rust or oil corrosion on the measuring surface, which will directly affect the standard length. Therefore, before using the gauge block, the surface anti-rust oil must be removed first to ensure the cleanliness of the measuring surface.

[0004] As far as the current situation is concerned, the cleaning of gauge blocks in the industry often uses cleaning agents with strong odors such as aviation gasoline. If the calibration personnel are exposed to such cleaning agents for a long time in a constant temperature room, it will cause considerable harm to their health. Therefore, a green and environmentally friendly automated cleaning method is urgently needed to replace the traditional cleaning method, replace the repetitive work of the calibration personnel, and speed up the actual work efficiency. Therefore, it is necessary to invent an ultrasonic cleaning system dedicated to gauge blocks to achieve automated cleaning to assist the calibration personnel in their work. Summary of the invention

[0005] Aiming at the needs of the metrology industry and the shortcomings of the background technology, the present invention invents an ultrasonic cleaning system for gauge blocks, which solves the problems of low efficiency, great harm to personnel, high labor costs, etc. of traditional cleaning.

[0006] In order to achieve the purpose of the present invention, the following technical solutions are adopted:

[0007] The invention comprises an ultrasonic cleaning station, a drying station, an oil immersion station, a station transfer machine, a length standard cleaning fixture, a station platform, a calibration platform and a system shell.

[0008] The ultrasonic cleaning station, drying station, oil immersion station and calibration platform described in the present invention are arranged at four corners with equal spacing, and each station is installed in the corresponding slot of the station platform according to the actual calibration and cleaning process. The ultrasonic cleaning station is used for cleaning the gauge block, the drying station is used to remove residual water stains after cleaning, the calibration platform is used for the static placement and calibration of the gauge block, and the oil immersion station is used for sealing the immersion oil after the gauge block is calibrated. The station transfer machine is installed on the station platform along the direction of the ultrasonic cleaning station and the drying station, and its function is to transfer the length standard cleaning fixture to each station.

[0009] The station transfer machine in the present invention includes a transverse axis guide rail fixed on the station platform, a horizontal cross arm connected to the transverse axis guide rail, a lifting arm connected to the horizontal cross arm, and a mechanical gripper fixed on the lifting arm for grabbing the length standard fixture. The transverse axis guide rail is horizontally arranged along the direction of the ultrasonic cleaning station and the drying box station. The horizontal cross arm is arranged along the direction of the ultrasonic cleaning station and the calibration platform. After the mechanical gripper grabs the gauge block cleaning fixture from the calibration platform, the fixture is placed in the ultrasonic cleaning machine, the drying box, and the oil immersion box in turn, and finally swung back to the calibration platform. The movement displacement range of the mechanical gripper along the transverse axis guide rail is the distance between the ultrasonic cleaning service center and the drying station center, the movement displacement range of the mechanical gripper along the horizontal cross arm direction is the distance between the ultrasonic cleaning station center and the calibration platform center, and the maximum depth of the mechanical gripper along the longitudinal direction is the distance between the bottom of each station and the lifting arm. The station transfer machine first grabs the length standard cleaning fixture with the gauge block installed from the calibration platform and places it in the ultrasonic cleaning station. After cleaning is completed, the length standard cleaning fixture is transferred to the drying station. After drying, it is returned to the calibration platform for the calibration process. After the calibration is completed, the length standard cleaning fixture is grabbed from the calibration platform and placed in the oil immersion station soaked with anti-rust oil. After standing and draining, the calibration personnel seal it.

[0010] The gauge block cleaning fixture of the present invention is vertically placed in a groove inside the ultrasonic cleaning tank by a mechanical gripper, and the cleaning process is performed after confirming that the placement is successful.

[0011] The ultrasonic cleaning station in the present invention specifically includes a pre-spraying process, an ultrasonic cleaning process and a rinsing process. In the pre-spraying process, the vector block cleaning fixture sprays a special cleaning liquid with a liquid temperature of 30°C to 40°C. The ultrasonic frequency in the ultrasonic cleaning process is 30 to 50kHz, and the ultrasonic sound intensity is 70w / in 2 The cleaning liquid temperature is 30℃~40℃, and the oil on the length standard is removed by ultrasonic cavitation and ultrasonic emulsification to form a dispersed system with water. During the flushing process, pure water at 30℃~40℃ is flushed to the length standard fixture to remove the waste liquid attached to the surface. The inner tank 4-1 of the ultrasonic cleaning station 4 is used to fix the length standard cleaning fixture 8, and is provided with a drain port 4-4 at the back for discharging the waste liquid.

[0012] The drying station of the present invention uses hot air drying at 80°C to 100°C to dry the length standard. The drying box door is controlled by an air pump. When the robot gripper reaches the preparatory position, the air pump pushes the drying box door open horizontally, and then the robot gripper puts the length standard fixture into the drying box to complete the placement.

[0013] The material of the calibration platform in the present invention is high-strength cast iron HT200-300. The calibration platform is used for static placement and metrological calibration after drying. To ensure the accuracy of the length standard, the length standard fixture needs to be placed at room temperature for two hours after drying.

[0014] The oil immersion tank in the present invention contains anti-rust liquid. After the calibration operation is completed, the length standard needs to be oiled and sealed again to prevent rust. The mechanical gripper needs to completely immerse the length standard fixture in the anti-rust liquid and let it stand for a period of time before wrapping it with oil paper and sealing it.

[0015] Compared with the background technology, the present invention has the following beneficial effects:

[0016] 1. The present invention designs a fully automated ultrasonic cleaning system, which solves the problems of traditional manual cleaning, which is lengthy, time-consuming, and labor-intensive, while ensuring efficient and stable cleaning capabilities, and greatly improves the efficiency of the calibration operation.

[0017] 2. The present invention utilizes ultrasonic cavitation to clean the oil stains on the surface of the length standard, completely replacing a series of cleaning agents with pungent odors such as aviation gasoline used in traditional cleaning methods, and avoiding the health hazards caused by the calibration personnel inhaling a large amount of volatile gases in a constant temperature environment for a long time.

[0018] 3. The present invention combines the actual calibration process design to control the program flow and plan the order of workstation placement, thus realizing "machine replacement" to a great extent. At the same time, it also designs special length standard fixtures for different types, and configures non-volatile and non-toxic cheap ultrasonic cleaning agents, thus achieving the goals of high cleaning efficiency, good cleaning effect and low cleaning cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is the overall structural diagram of the present invention.

[0020] Figure 2 It is the internal structure diagram of the present invention.

[0021] Figure 3 It is a structural diagram of the workstation transfer machine of the present invention.

[0022] Figure 4 This is a structural diagram of the ultrasonic cleaning station of the present invention.

[0023] Figure 5 This is a structural diagram of the drying station of the present invention. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention is further described below in conjunction with the accompanying drawings.

[0025] like Figure 1 As shown, the present invention provides a full-automatic ultrasonic cleaning system for a length standard, comprising an ultrasonic cleaning station 4, a drying station 5, an oil immersion station 6, a station transfer machine 3, a length standard cleaning fixture 8, a station platform 2, a calibration platform 7 and a system housing 1. The system housing 1 covers the entire station system to isolate the working area from the external area.

[0026] like Figure 2 As shown, the ultrasonic cleaning station 4, drying station 5, oil immersion station 6 and calibration platform 7 are arranged at four corners with equal spacing. Each station is installed in the corresponding slot of the station platform 2 according to the actual calibration and cleaning process. The ultrasonic cleaning station 4 is used for cleaning the gauge block, the drying station 5 is used to remove the residual water stains after cleaning, the calibration platform 7 is used for the static and calibration of the gauge block, and the oil immersion station 6 is used for sealing the immersion oil after the gauge block is calibrated. The station transfer machine 3 is installed on the station platform 2 along the direction of the ultrasonic cleaning station 4 and the drying station 5, and its function is to transfer the length standard cleaning fixture 8 to each station.

[0027] like Figure 3 As shown, the station transfer machine 3 includes a horizontal axis guide rail 3-1, a horizontal axis bracket 3-2, a lifting arm 3-3 and a manipulator gripper 3-4. The horizontal axis guide rail 3-1 is installed horizontally along the ultrasonic cleaning station 4 and the drying station 5, the horizontal axis bracket 3-2 is installed in the direction of the ultrasonic cleaning station 4 and the calibration platform 7, and the manipulator gripper 3-4 is fixed on the lifting arm 3-3 for grabbing and placing the fixture 8 carrying the length standard. The manipulator gripper 3-4 grabs the length standard fixture 8 from the calibration platform 7 and passes through the ultrasonic cleaning station 4, the drying station 5, the calibration station 7 and the oil immersion station 6 in sequence. The station transfer machine 3 first grabs the length standard cleaning fixture 8 with the gauge block installed from the calibration platform 7, and puts it into the ultrasonic cleaning station 4. After the cleaning is completed, the length standard cleaning fixture 8 is transferred to the drying station 5. After the drying is completed, it is returned to the calibration platform 7 for the calibration process; after the calibration is completed, the length standard cleaning fixture 8 is grabbed from the calibration platform 7 and placed into the oil immersion station 6 soaked with anti-rust oil. After it is left to stand and drain, the calibration personnel seal it.

[0028] like Figure 4 , 5As shown, the ultrasonic cleaning station 4 specifically includes a pre-spraying process, an ultrasonic cleaning process and a flushing process, and has a closed-loop heating system to keep the water temperature of the entire cleaning process at an optimal temperature. The inner tank 4-1 of the ultrasonic cleaning machine is used to place the length standard cleaning fixture 8. The bottom 4-3 of the ultrasonic cleaning tank is used to install a transducer, which can convert electrical energy into mechanical energy and then generate ultrasonic waves. The drain port 4-4 is used to discharge the waste liquid after cleaning. The door 5-2 of the drying box 5 is controlled by the air pump 5-1. When the cleaning is completed, the manipulator gripper 3-4 moves the length standard fixture 8 to the top of the drying box 5. The controller controls the air pump 5-1 to push open the door 5-2 of the drying box so that the manipulator gripper 3-4 can enter. The calibration platform 7 is made of high-strength cast iron HT200-300 and is used for calibrating the length standard operation to avoid the accuracy error caused by the platform itself and affect the calibration results. The oil immersion station 6 contains anti-rust oil. After the verification is completed, the mechanical claws 3-4 clamp the fixture 8 and completely immerse it in the oil immersion station 6. After draining, it can be wrapped in oil paper for storage.

[0029] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A gauge block ultrasonic cleaning system, characterized in that: The system comprises an ultrasonic cleaning station (4), a drying station (5), an oil immersion station (6), a station transfer machine (3), a length standard cleaning fixture (8), a station platform (2), a calibration platform (7) and a system housing (1). The system housing (1) covers the entire station system to isolate the working area from the external area. The ultrasonic cleaning station (4), the drying station (5), the oil immersion station (6) and the calibration platform (7) are arranged at equal intervals in four corners. Each station is cleaned according to the actual calibration. The process is installed in the corresponding groove of the workstation platform (2), wherein the ultrasonic cleaning station (4) is used for cleaning the gauge block, the drying station (5) is used for removing residual water stains after cleaning, the calibration platform (7) is used for the static placement and calibration of the gauge block, and the oil immersion station (6) is used for sealing the oil immersion after the gauge block calibration. The workstation transfer machine (3) is installed on the workstation platform (2) along the direction of the ultrasonic cleaning station (4) and the drying station (5), and its function is to transfer the length standard cleaning fixture (8) to each workstation; The station transfer machine (3) includes a transverse guide rail (3-1), a transverse support (3-2), a lifting arm (3-3) and a manipulator gripper (3-4), wherein the transverse guide rail (3-1) is installed horizontally along the ultrasonic cleaning station (4) and the drying station (5), the transverse support (3-2) is installed in the anti-directional direction along the ultrasonic cleaning station (4) and the calibration platform (7), and the manipulator gripper (3-4) is fixed on the lifting arm (3-3) for grabbing and placing a fixture (8) carrying a length standard, wherein the transverse guide rail (3-1) is installed on the station platform (2), the horizontal cross arm is arranged on the transverse guide rail (3-1), the lifting arm (3-3) is fixed on the horizontal cross arm, and the manipulator gripper (3-4) for grabbing the length standard fixture is installed on the lifting arm (3-3), and the movement displacement range of the manipulator gripper along the transverse guide rail is the ultrasonic cleaning station (4). The distance between the center of the washing station (4) and the center of the drying station (5), the moving displacement range of the manipulator claw (3-4) along the horizontal cross arm direction is the distance between the center of the ultrasonic cleaning station (4) and the center of the calibration platform (7), and the maximum depth of the manipulator claw (3-4) along the longitudinal direction is the distance between the bottom of each station and the lifting arm (3-3). The station transfer machine (3) first grabs the length standard cleaning fixture (8) with the gauge block installed from the calibration platform (7) and puts it into the ultrasonic cleaning station (4). After the cleaning is completed, the length standard cleaning fixture (8) is transferred to the drying station (5). After the drying is completed, it is returned to the calibration platform (7) for the calibration process. After the calibration is completed, the length standard cleaning fixture (8) is grabbed from the calibration platform (7) and placed in the oil immersion station (6) soaked with anti-rust oil. After it is left to stand and drain, the calibration personnel seal it. The ultrasonic cleaning station (4) specifically includes a pre-spraying process, an ultrasonic cleaning process and a flushing process. During the pre-spraying process, a special cleaning liquid is sprayed onto the length standard cleaning fixture (8). During the ultrasonic cleaning process, ultrasonic cavitation and ultrasonic emulsification are used to remove oil stains on the length standard and form a dispersed system with water. Finally, during the flushing process, pure water is flushed onto the length standard cleaning fixture (8) to remove waste liquid attached to the surface. The inner tank (4-1) of the ultrasonic cleaning station (4) is used to fix the length standard cleaning fixture (8), and is provided with a drain port (4-4) at the back for discharging waste liquid. The bottom (4-3) of the ultrasonic cleaning tank is used to place and arrange ultrasonic transducers to generate ultrasonic waves.

2. The ultrasonic cleaning system for gauge blocks according to claim 1, characterized in that: The drying station (5) uses dry hot air to blow towards the length standard cleaning fixture (8) to remove the moisture remaining after cleaning. The drying box door (5-1) is controlled by an air pump (5-2). When the robot gripper (3-4) reaches the preparation position, the air pump pushes the drying box door (5-1) horizontally open by the air pump (5-2), and then the robot gripper (3-4) places the length standard cleaning fixture (8) into the drying box to complete the placement.

3. The gauge block ultrasonic cleaning system according to claim 1, characterized in that: The oil immersion station (6) contains anti-rust oil, which is used for the length standard device to be immersed in the oil after the calibration is completed, drained and packaged, dried and left to stand, and then the length standard device cleaning fixture (8) is completely immersed in the anti-rust liquid in the oil immersion station (6) by the mechanical gripper (3-4), and then wrapped and sealed with oil paper after the anti-rust oil is drained.

4. The gauge block ultrasonic cleaning system according to claim 1, characterized in that: The calibration platform (7) is fixed on the workstation platform (2) and is used by calibration personnel to perform calibration work on the length standard.

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