Automatic cleaning device for gearbox housing

Abstract

The application relates to the field of passenger car gearbox processing, and discloses an automatic cleaning device for a gearbox shell, wherein the automatic cleaning device for the gearbox shell comprises a sealed cleaning chamber, the cleaning chamber is internally provided with a high-pressure spray cleaning assembly, a turbulent cleaning machine, an air pressure drying machine and a mechanical arm, the gearbox shell is subjected to deep cleaning in a mode of high-pressure flushing and then turbulent soaking, and finally drying, so that the cleaning effect can be enhanced. The mechanical arm is provided with two independent operating clamps, the two clamps transport the shell bodies between three work stations, one shell body is soaked, and the two clamps clamp one shell body each to perform flushing or blowing, so that the three shell bodies can simultaneously perform the pipeline cleaning operation of flushing, soaking and blowing, the cleaning effect is improved, and the shell cleaning efficiency is greatly improved. The application has the effect of making the cleaning of the gearbox shell more efficient.

Description

Technical Field

[0001] This invention relates to the field of passenger vehicle transmission manufacturing, and in particular to an automatic transmission housing cleaning device. Background Technology

[0002] The cleaning of transmission housings in passenger vehicles typically uses traditional horizontal cleaning lines. High-pressure water guns are used to quickly rinse the housings moving along the assembly line to remove burrs and metal filings from the cut edges. However, these cleaning lines occupy a large area, and each step requires personnel to control and observe, which wastes manpower. Furthermore, it is difficult to turn the housings over for thorough cleaning, resulting in poor cleaning effectiveness.

[0003] Alternatively, an ultrasonic cleaner can be used, but ultrasonic cleaning can only clean one shell at a time, which is inefficient. Summary of the Invention

[0004] To make the cleaning of the gearbox housing more efficient, this application provides an automatic gearbox housing cleaning device.

[0005] This application provides an automatic gearbox housing cleaning device, which adopts the following technical solution:

[0006] An automatic cleaning device for a gearbox housing, controlled by a numerical control system, includes:

[0007] The cleaning chamber is sealed, and a feed door is opened on one side of the cleaning chamber;

[0008] A high-pressure spray washing assembly is installed on the side wall of the cleaning chamber for spraying liquid to rinse the housing;

[0009] A turbulent flow cleaning machine is provided with a movable baffle. The movable baffle is used to guide the liquid sprayed by the high-pressure spraying component into the turbulent flow cleaning machine. The water-blocking surface of the movable baffle is provided with a pressure sensor. The pressure sensor is electrically connected to the CNC system. The pressure sensor can drive the movable baffle to move according to the water pressure to adjust the water-blocking range of the movable baffle.

[0010] A pneumatic dryer is used to dry the shell after cleaning.

[0011] The robotic arm, equipped with two independently operating grippers, is located in the cleaning chamber and is used to grip the conveyor housing.

[0012] By adopting the above technical solution, a high-pressure spray cleaning component, a turbulent flow cleaning machine, and a pneumatic dryer are sequentially installed in the cleaning chamber to clean and dry the gearbox housing. The housing is subjected to high-pressure flushing, immersion in turbulent flow cleaning fluid, and then dried, which enhances the cleaning effect and allows the housing to be pre-dried before entering the next process, roughly drying the surface liquid and avoiding carrying excess liquid into the subsequent vacuum drying process. A movable baffle is set to introduce the sprayed water flow into the turbulent flow cleaning machine, which saves raw materials, minimizes water stains from external spraying, and also reduces the difficulty of cleaning the cleaning chamber.

[0013] A robotic arm with two independent grippers transports the housing between three stations. One gripper holds the housing for high-pressure rinsing, and then the housing is placed in a turbulent cleaning machine for soaking and cleaning. After that, the other gripper picks up the housing and transports it to a pneumatic dryer for drying. Therefore, it can simultaneously perform assembly line cleaning operations on three housings, improving both the cleaning effect and the cleaning efficiency.

[0014] Furthermore, the turbulent cleaning machine is equipped with an ultrasonic vibrator, a storage rack, and a magnetic chuck. The inner wall of the turbulent cleaning machine is provided with hooks, the storage rack is hung on the hooks, and the surface of the magnetic chuck is embedded with an electromagnet for adsorbing iron filings. The electromagnet is electrically connected to the CNC system.

[0015] By adopting the above technical solutions, an ultrasonic vibrator is set up to generate turbulence, which further removes stains that are difficult to clean in places such as dark holes in the shell; the storage rack can support the shell and facilitate the all-round flow of the cleaning fluid; a magnetic chuck is set up and the electromagnet is energized, which can use magnetic force to attract and collect the washed-off iron filings, avoid the accumulation of iron filings that clog the turbulent cleaning machine, and facilitate the recycling and reuse of iron filings.

[0016] Furthermore, the turbulent cleaning machine is also provided with an inlet and an outlet. Both the inlet and the outlet are connected to a raw material tank containing a special cleaning solution. A drain pipe is connected between the outlet and the raw material tank. Multiple filter elements are provided along the length of the drain pipe, with the filter elements having smaller mesh sizes the farther away from the outlet.

[0017] By adopting the above technical solution, both the inlet and outlet are connected to the raw material pool, which can continuously refresh the cleaning fluid in the turbulent cleaning machine and ensure the cleaning effect. Multi-stage filters are installed in the drain pipe connected to the outlet to remove impurities such as oil in the waste liquid, making the returned cleaning fluid cleaner.

[0018] Furthermore, the turbulent cleaning machine is equipped with abrasive balls. When cleaning the shell, the abrasive balls move randomly with the turbulent flow and collide with the surface of the shell.

[0019] By adopting the above technical solution, the abrasive balls are set to move with the turbulent flow. Multiple abrasive balls randomly collide with the shell, which can further polish the edge of the shell, removing dirt while soaking and rubbing to remove burrs.

[0020] Furthermore, the high-pressure spray cleaning assembly includes five nozzles, which are connected in a cross shape and are equidistantly arranged. Each nozzle is connected to a water inlet pipe, which is connected to the cleaning fluid and equipped with an electric valve. The electric valve is electrically connected to the CNC system.

[0021] Since dispersing and expanding the effective range of the nozzles would reduce the flushing pressure, by adopting the above technical solution, the five nozzles arranged in a cross shape can maximize the effective range while maintaining the impact water pressure, thereby improving the cleaning efficiency; by electrically connecting the electric valve to the CNC system, the water pressure can be adjusted with one click from the electrical control terminal according to the production situation, making the operation convenient and quick.

[0022] Furthermore, the feed door is slidably connected to the side wall of the cleaning chamber, and a cylinder electrically connected to the CNC system is installed on the side wall of the cleaning chamber. The cylinder is used to drive the feed door to slide open. A position sensor is provided on the outside of the feed door. The position sensor is used to sense the housing and control the working state of the cylinder.

[0023] By adopting the above technical solution, the feed door is in a sealed and closed state under normal conditions, reducing the exchange of substances between the cleaning chamber and the outside. When the position sensor detects the shell, it drives the cylinder to contract, thereby opening the feed door, and then the robotic arm picks up the shell, improving the automation level of picking up parts.

[0024] Furthermore, the pneumatic dryer is L-shaped and includes a horizontal blowing plate and a vertical blowing plate, both of which are equipped with multiple air nozzles.

[0025] By adopting the above technical solution, an L-shaped air pressure dryer is formed by a horizontal air-blowing disc with multiple nozzles and a vertical air-blowing disc. The air-blowing nozzles can create turbulent airflow. The simultaneous horizontal and vertical air blowing can increase the air-receiving area of ​​the shell, making it easier to dry the uneven inner surface of the shell.

[0026] Furthermore, the arrangement of the jet nozzles matches the shape of the housing, and the jet nozzles are provided at the corresponding positions of the hidden holes in the housing.

[0027] By adopting the above technical solution, the jet nozzles are arranged along the contour of the shell, and the jet nozzles are set at the positions corresponding to the dark holes in the shell, which facilitates the point blowing, thereby improving the drying effect.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. By sequentially installing a high-pressure spray washing assembly, a turbulent flow cleaning machine, and a pneumatic dryer in the cleaning chamber, the combination of high-pressure rinsing and turbulent immersion can improve the cleaning effect. After pre-drying by the pneumatic dryer, the shell is transported between the three workstations by a robotic arm with two independent grippers, realizing the assembly line cleaning operation of the three shells at the same time, which can improve the cleaning effect and increase the cleaning efficiency.

[0030] 2. By setting up a movable baffle to guide the wastewater containing iron filings into the turbulent flow cleaner, and installing a magnetic suction plate inside the turbulent flow cleaner, not only can the cleaning fluid be saved, but the magnetic force can also be used to attract and collect the washed-off iron filings, preventing the iron filings from accumulating and clogging the turbulent flow cleaner. At the same time, it can also facilitate the recycling and reuse of iron filings.

[0031] 3. By combining a horizontal air-blowing disc with a nozzle and a vertical air-blowing disc into an L-shaped pneumatic dryer, the simultaneous horizontal and vertical air blowing creates a turbulent airflow. The arrangement of multiple nozzles according to the shape of the shell increases the air-receiving area of ​​the shell. The nozzles are aligned with the hidden holes in the shell, which facilitates the drying of the uneven inner surface of the shell, thereby improving the drying effect. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the automatic cleaning device for the gearbox housing according to an embodiment of this application.

[0033] Figure 2 This is a schematic diagram of the feed gate structure.

[0034] Figure 3 This is a schematic diagram of the outer structure of the feed gate.

[0035] Figure 4 This is a schematic diagram of a turbulent flow cleaning machine.

[0036] Figure 5 This is a schematic diagram of a pneumatic dryer.

[0037] Explanation of reference numerals in the attached figures:

[0038] 10. Shell; 1. Cleaning chamber; 11. Feed door; 12. Discharge door; 13. Transparent window; 2. High-pressure spray washing assembly; 21. Nozzle; 22. Water inlet pipe; 3. Turbulent flow cleaner; 31. Ultrasonic vibrator; 32. Storage rack; 33. Magnetic chuck; 331. Electromagnet; 34. Hook; 35. Water inlet; 36. Water outlet; 4. Movable baffle; 5. Air pressure dryer; 51. Horizontal air blowing plate; 511. Air nozzle; 52. Vertical air blowing plate; 6. Robotic arm; 61. Gripper; 7. Drain pipe; 71. Filter element; 8. Cylinder; 9. Position sensor. Detailed Implementation

[0039] The following is in conjunction with the appendix Figure 1-5 The technical solution of this application is described clearly and completely.

[0040] This application discloses an automatic cleaning device for a gearbox housing.

[0041] Reference Figure 1 An automatic cleaning device for a gearbox housing is integrated and controlled by a CNC system. It includes a sealed cleaning chamber 1, a high-pressure spray cleaning component 2, a turbulent cleaning machine 3, a pneumatic dryer 5, and a robotic arm 6. The robotic arm 6 has two independently operating grippers 61. The grippers 61 hold the housing 10 and use a combination of high-pressure flushing and turbulent immersion to deeply clean and initially dry the gearbox housing 10, which can enhance the cleaning effect.

[0042] Two independent grippers 61 transport the housing 10 between three workstations. One gripper 61 holds the housing 10 for high-pressure rinsing, and then the housing 10 is placed in the turbulent cleaning machine 3. After soaking and cleaning, the other gripper 61 picks up the housing 10 and transports it to the air pressure dryer 5 for drying. Therefore, it can realize the assembly line cleaning operation of rinsing, soaking and drying three housings 10 at the same time, which not only improves the cleaning effect, but also greatly improves the cleaning efficiency of the housing 10.

[0043] Reference Figure 2 , Figure 3 A feed door 11 is located on one side of the cleaning chamber 1. The feed door 11 is slidably connected to the bottom of the side wall of the cleaning chamber 1. A cylinder 8, electrically connected to the CNC system, is vertically installed on the side wall of the cleaning chamber 1. The output end of the cylinder 8 is connected to the feed door 11. A position sensor 9 is located on the outside of the feed door 11. After the position sensor 9 senses the housing 10, it feeds back information to the CNC system. After receiving the command, the cylinder 8 drives the feed door 11 to slide upward and open. A discharge door 12, driven by the cylinder 8, is also located on the side of the cleaning chamber 1 opposite the feed door 11. During the cleaning process, both the feed door 11 and the discharge door 12 remain closed. To facilitate observation of the working conditions inside the cleaning chamber 1, a transparent viewing window 13 can be installed on the side wall of the cleaning chamber 1.

[0044] Reference Figure 1 The robotic arm 6 faces the feed gate 11. The high-pressure spray washing assembly 2, the turbulent flow cleaning machine 3, and the air pressure dryer 5 are all located on the opposite side of the robotic arm 6 and are arranged in a straight line.

[0045] Reference Figure 1 , Figure 2The high-pressure spray cleaning assembly 2 is installed on the side wall of the cleaning chamber 1, including five nozzles 21. The nozzles 21 are arranged in a cross shape, and the collinear nozzles 21 are equidistantly spaced. Each nozzle 21 is connected to a water inlet pipe 22, which is connected to a cleaning fluid storage tank. The water inlet pipe 22 is equipped with an electric valve that is electrically connected to the CNC system. The robotic arm 6 holds the housing 10 facing the high-pressure spray cleaning assembly 2. The nozzles 21 spray cleaning fluid onto the housing 10, using water pressure to flush away burrs, iron filings, oil stains, and other impurities from the edges of the housing 10. Since dispersing and expanding the effective range of the nozzles 21 would reduce the flushing pressure, the five nozzles 21 arranged in a cross shape can maximize the effective range while maintaining the impact water pressure, thereby improving cleaning efficiency. The operator can adjust the water pressure with one click from the operating terminal of the CNC system according to the difficulty of cleaning different models of housing 10, making the operation convenient and quick.

[0046] Reference Figure 1 After high-pressure rinsing, the robotic arm 6 immerses the housing 10 in the turbulent cleaning machine 3 for soaking. The turbulent cleaning machine 3 is located below and in front of the high-pressure spray assembly 2. A movable baffle 4 is hinged to the top of the side wall of the turbulent cleaning machine 3. The movable baffle 4 can guide the liquid sprayed from the high-pressure spray assembly 2 into the turbulent cleaning machine 3. On the one hand, it can save raw materials, as the cleaning liquid after rinsing enters the turbulent cleaning machine 3 and is used for further soaking and decontamination, thereby improving the utilization rate of the cleaning liquid; on the other hand, it can minimize water stains sprayed outwards and reduce the difficulty of cleaning the cleaning chamber 1. Two movable baffles 4 are provided opposite each other. The water-blocking surface of the movable baffle 4 is equipped with a pressure sensor. The pressure sensor is electrically connected to the CNC system. The pressure sensor can drive the movable baffle 4 to move according to the water pressure to adjust the water-blocking range of the movable baffle 4. When the water pressure exceeds the set value of the pressure sensor, the movable baffle 4 moves outwards to expand the water-blocking range, thereby reducing the pressure on the water-blocking surface and reducing the liquid splashed outwards.

[0047] Reference Figure 4 The turbulent flow cleaner 3 is equipped with an ultrasonic vibrator 31, a storage rack 32, and a magnetic chuck 33. Hooks 34 are provided on the inner wall of the turbulent flow cleaner 3, and the storage rack 32 is hung on the hooks 34 for easy removal. The ultrasonic vibrator 31 creates turbulence in the cleaning fluid, thereby deeply cleaning stubborn stains on the surface of the housing 10. The magnetic chuck 33 is located below the ultrasonic vibrator 31. Since the waste fluid from rinsing the housing 10 flows into the turbulent flow cleaner 3, a circular electromagnet 331 can be embedded in the surface of the magnetic chuck 33. Electrically connecting the electromagnet 331 to the CNC system allows for the magnetic attraction and collection of washed-off iron filings, preventing iron filings from clogging the turbulent flow cleaner 3 and facilitating the recycling and reuse of iron filings. Multiple water-permeable holes are formed around the electromagnet 331 on the chuck to facilitate the circulation of the cleaning fluid.

[0048] The turbulent flow cleaning machine 3 has an inlet 35 and an outlet 36 on both sides of its bottom. Both the inlet 35 and the outlet 36 are connected to a raw material tank containing a special cleaning solution. A drain pipe 7 connects the outlet 36 to the raw material tank. Three filter elements 71 are arranged along the length of the drain pipe 7. The filter elements 71 farther from the outlet 36 have smaller mesh sizes, forming a three-stage filtration. The filter elements 71 are preferably filter screens or sponges. In other embodiments, the number of filter elements 71 can also be two, four, or other quantities. Multiple abrasive balls can be added to the turbulent flow cleaning machine 3 during soaking. The abrasive balls move randomly with the turbulent flow and collide with the surface of the shell 10, further polishing the edges of the shell 10, removing dirt and burrs simultaneously during soaking.

[0049] Reference Figure 1 , Figure 5 After soaking, the robotic arm 6 removes the housing 10 and transports it to the pneumatic dryer 5 for drying. The pneumatic dryer 5 is L-shaped and includes a horizontal air blowing plate 51 and a vertical air blowing plate 52. Multiple air nozzles 511 are installed on both the horizontal and vertical air blowing plates 51 and 52. Simultaneous horizontal and vertical air blowing onto the housing 10 creates a turbulent airflow, increasing the surface area of ​​the housing 10 exposed to air. The arrangement of the air nozzles 511 matches the shape of the housing 10, with each hidden opening in the housing 10 corresponding to an air nozzle 511. This alignment of the air nozzles with the hidden openings facilitates drying of the uneven inner surface of the housing 10, thereby improving the drying effect.

[0050] The above are all preferred embodiments of this application. Obviously, the embodiments described above are merely preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, any equivalent changes made by those skilled in the art based on the structure, shape, and principle of this application without creative effort should be covered within the scope of protection of this application.

Claims

1. An automatic cleaning device for a gearbox housing, controlled by a numerical control system, characterized in that, include: The cleaning chamber (1) is sealed, and a feed door (11) is opened on one side of the cleaning chamber (1); A high-pressure spray washing assembly (2) is installed on the side wall of the cleaning chamber (1) for spraying liquid to rinse the housing (10); Turbulent cleaning machine (3) is located in front of and below the high-pressure spray cleaning assembly (2). The turbulent cleaning machine (3) is provided with movable baffles (4). Two movable baffles (4) are provided opposite each other. The movable baffles (4) are used to guide the liquid sprayed by the high-pressure spray cleaning assembly (2) into the turbulent cleaning machine (3). The water-blocking surface of the movable baffles (4) is provided with a pressure sensor. The pressure sensor is electrically connected to the CNC system. The pressure sensor can drive the movable baffles (4) to move according to the water pressure to adjust the water-blocking range of the movable baffles (4). A pneumatic dryer (5) is used to dry the cleaned shell (10); The robotic arm (6) is equipped with two independently operating grippers (61) and is located in the cleaning chamber (1). The robotic arm (6) is used to grip and transfer the housing (10). The two independent grippers (61) transport the housing (10) between three workstations. The turbulent cleaning machine (3) is equipped with an ultrasonic vibrator (31), a storage rack (32) and a magnetic chuck (33) inside. The inner peripheral wall of the turbulent cleaning machine (3) is provided with a hook (34). The storage rack (32) is hung on the hook (34). The surface of the magnetic chuck (33) is embedded with an electromagnet (331) for adsorbing iron filings. The electromagnet (331) is electrically connected to the CNC system. The turbulent cleaning machine (3) is also provided with an inlet (35) and an outlet (36). The inlet (35) and the outlet (36) are both connected to a raw material tank containing a special cleaning liquid. A drain pipe (7) is connected between the outlet (36) and the raw material tank. Multiple filter elements (71) are provided in the drain pipe (7) along the length direction. The filter elements (71) farther away from the outlet (36) have smaller mesh sizes. The turbulent cleaning machine (3) is equipped with abrasive balls. When cleaning the shell (10), the abrasive balls move randomly with the turbulent flow and collide with the surface of the shell (10).

2. The automatic gearbox housing cleaning device according to claim 1, characterized in that: The high-pressure spray cleaning assembly (2) includes five nozzles (21). The nozzles (21) are connected in a cross shape, and the collinear nozzles (21) are arranged at equal intervals. Each nozzle (21) is connected to a water inlet pipe (22). The water inlet pipe (22) is connected to the cleaning fluid and is equipped with an electric valve. The electric valve is electrically connected to the CNC system.

3. The automatic gearbox housing cleaning device according to claim 1, characterized in that: The feed door (11) is slidably connected to the side wall of the cleaning chamber (1). A cylinder (8) electrically connected to the CNC system is installed on the side wall of the cleaning chamber (1). The cylinder (8) is used to drive the feed door (11) to slide open. A position sensor (9) is provided on the outside of the feed door (11). The position sensor (9) is used to sense the housing (10) and control the working state of the cylinder (8).

4. The automatic gearbox housing cleaning device according to claim 1, characterized in that: The pneumatic dryer (5) is L-shaped and includes a horizontal blowing plate (51) and a vertical blowing plate (52). Both the horizontal blowing plate (51) and the vertical blowing plate (52) are provided with multiple air nozzles (511).

5. The automatic gearbox housing cleaning device according to claim 4, characterized in that: The arrangement of the jet nozzles (511) matches the shape of the housing (10), and the jet nozzles (511) are provided at the dark hole positions of the housing (10).

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