A piston rod earring positioning and cleaning mechanism

Abstract

The present invention provides a piston rod earring positioning and cleaning mechanism, comprising a bracket, a nozzle, an end face cleaning component and a visual positioning component; the nozzle, the end face cleaning component and the visual positioning component are installed on the crossbeam of the bracket; an electromagnetic valve is installed on the nozzle, and the nozzle can spray a cleaning agent toward the piston rod earring; a first photoelectric sensor is installed at the nozzle on the bracket, the first photoelectric sensor is connected to a controller, and the controller is connected to the electromagnetic valve; the end face cleaning component comprises a rotating motor, a rotating seat and a cleaning brush, the rotating motor is installed on the crossbeam, the rotating seat is installed on the output shaft of the rotating motor, and the cleaning brush is installed on the rotating seat; the visual positioning component comprises a CCD camera, a lens and a light source, the lens is installed on the CCD camera, the light source is located in front of the lens, the CCD camera is connected to an image comparator, and the image comparator is connected to the controller. The present invention solves the problems of poor end face cleaning effect of the piston rod earring and inaccurate feeding positioning.

Description

Technical Field

[0001] The invention belongs to the technical field of piston rod processing equipment, and in particular relates to a piston rod earring positioning and cleaning mechanism. Background Art

[0002] When processing the piston rod, the earring needs to be welded to the piston rod. Since the welding end face of the earring will have residual oil and foreign matter during the production process, the end face of the earring needs to be cleaned before welding. If the end face is directly rinsed with a cleaning agent, the cleaning ability is insufficient and the oil and foreign matter cannot be effectively removed. In addition, when welding and feeding the piston rod earring, if the gripping angle of the piston rod earring by the robot is deviated, the feeding positioning will be inaccurate, and the position of the piston rod earring needs to be temporarily adjusted, thus affecting the welding efficiency. Summary of the invention

[0003] The purpose of the present invention is to provide a piston rod earring positioning and cleaning mechanism to solve the problems of poor cleaning effect of the end face of the piston rod earring and inaccurate feeding positioning.

[0004] The present invention provides the following technical solutions:

[0005] A piston rod earring positioning and cleaning mechanism, comprising a bracket, a nozzle, an end face cleaning component and a visual positioning component;

[0006] The support is in the shape of a gantry, and the nozzle, the end surface cleaning component and the visual positioning component are installed on the crossbeam of the support;

[0007] The spray head is provided with an electromagnetic valve, the spray head is connected to a water pump and a detergent tank in sequence through a hose, and the spray head can spray detergent toward the end surface of the piston rod earring; a first photoelectric sensor is installed on the bracket at the spray head, the first photoelectric sensor is connected to a controller, and the controller is connected to the electromagnetic valve;

[0008] The end face cleaning assembly comprises a rotating motor, a rotating seat and a cleaning brush, wherein the rotating motor is mounted on the crossbeam, the rotating seat is mounted on the output shaft of the rotating motor, and the cleaning brush is mounted on the rotating seat;

[0009] The visual positioning component includes a CCD camera, a lens and a light source, the lens is mounted on the CCD camera, the light source is located in front of the lens, the CCD camera is connected to an image comparator, and the image comparator is connected to the controller.

[0010] Preferably, a second photoelectric sensor is installed on the crossbeam at the cleaning brush, the second photoelectric sensor is connected to a controller, and the controller is connected to the rotating motor.

[0011] Preferably, a waste liquid tank with an open top is also installed on the bracket, and the waste liquid tank is located below the nozzle and the cleaning brush.

[0012] Preferably, a waste discharge hole is provided at the bottom of the waste liquid tank, and the waste discharge hole is connected to the waste liquid collection tank through a hose.

[0013] Preferably, a horizontal camera fixing plate is installed on the crossbeam, a guide rail extending in the front-rear direction is installed on the camera fixing plate, a slider matching the guide rail is fixedly installed on the bottom of the CCD camera, and the camera can move forward and backward along the guide rail.

[0014] Preferably, a lens support frame is installed on the camera fixing plate in front of the guide rail, and a lens positioning groove is provided on the lens support frame, and the lens positioning groove supports and positions the lens.

[0015] Preferably, an L-shaped light source support frame is fixedly installed on the front end of the camera fixing plate, and the bottom edge of the light source support frame is provided with a long hole extending in the front-to-back direction, and the light source support frame is installed on the camera fixing plate by bolts in the long hole; the light source is installed on the vertical edge of the light source support frame.

[0016] The beneficial effects of the present invention are as follows: the present invention installs a nozzle, an end face cleaning assembly and a visual positioning assembly on the crossbeam, respectively, to clean, wipe and visually position the welding end face of the piston rod earring, and first cleans the end face of the piston rod earring before welding it to the piston rod, which is beneficial to improving the welding strength. The present invention uses a first photoelectric sensor and a controller to control the intermittent start of the nozzle, saving the amount of cleaning agent and reducing production costs. Using a cleaning brush to wipe the end face of the piston rod earring improves the cleanliness of the end face, reduces the residual moisture on the end face, and helps to improve welding efficiency. The CCD camera visually positions the piston rod earring, so that the manipulator can accurately control the feeding direction and angle of the piston rod, improving the operation accuracy and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the installation structure of the nozzle, the end face cleaning assembly and the waste liquid tank of the present invention;

[0020] Figure 3 It is a schematic diagram of the structure of the visual positioning component of the present invention;

[0021] Figure 4 It is a structural schematic diagram of the piston rod earring of the present invention;

[0022] The markings in the figure are: 1. bracket; 2. nozzle; 3. first photoelectric sensor; 4. piston rod earring; 5. rotating seat; 6. cleaning brush; 7. crossbeam; 8. second photoelectric sensor; 9. CCD camera; 10. lens; 11. light source; 12. camera fixing plate; 13. guide rail; 14. slider; 15. lens support frame; 16. lens positioning groove; 17. light source support frame; 18. long hole; 19. waste liquid tank; 20. waste discharge hole; 21. side fixing plate; 22. end face. DETAILED DESCRIPTION

[0023] This embodiment provides a piston rod earring positioning and cleaning mechanism for cleaning and visually positioning the end surface of the piston rod earring. The structure of the piston rod earring is as follows: Figure 4 As shown, the end face 22 is first cleaned using the cleaning mechanism, and then the end face 22 is welded to the piston rod.

[0024] like Figure 1 As shown, this embodiment includes a bracket 1, a nozzle 2, an end face cleaning assembly and a visual positioning assembly. The bracket 1 is in the shape of a gantry, and the nozzle 2, the end face cleaning assembly and the visual positioning assembly are installed on the crossbeam 7 of the bracket 1 from left to right.

[0025] like Figure 1 and Figure 2 As shown, a solenoid valve for controlling the opening or closing of the nozzle is installed on the nozzle 2. The nozzle 2 is connected to the water pump and the detergent tank in sequence through a hose. After the water pump and the solenoid valve are turned on, the water pump can draw the detergent in the detergent tank into the nozzle 2. The nozzle 2 sprays the detergent toward the end face 22 of the piston rod earring 4 to remove the oil and foreign matter on its welding end face. A first photoelectric sensor 3 is installed on the bracket 1 near the nozzle 2. The first photoelectric sensor 3 is connected to the controller, and the controller is connected to the solenoid valve. When the piston rod earring 4 approaches the nozzle 2, the first photoelectric sensor 3 detects the piston rod earring 4 and sends a detection signal to the controller. The controller controls the solenoid valve to open and spray the detergent to the end face of the piston rod earring. When the piston rod earring 4 is removed from the nozzle, the controller closes the nozzle, thereby realizing intermittent operation of the nozzle to save detergent.

[0026] like Figure 2As shown, the end face cleaning assembly includes a rotary motor (not shown in the figure), a rotary seat 5 and a cleaning brush 6. The rotary motor is mounted on the crossbeam 7. The rotary seat 5 is mounted on the output shaft of the rotary motor in a linkage manner. The cleaning brush 6 is mounted on the rotary seat 5. The rotary motor can drive the cleaning brush 6 to rotate at a high speed to wipe the dirt, foreign matter and residual cleaning agent on the end face 22 of the piston rod earring. A second photoelectric sensor 8 is installed on the crossbeam 7 near the cleaning brush 6. The second photoelectric sensor 8 is connected to the controller, and the controller is connected to the rotary motor. When the second photoelectric sensor 8 detects that the piston rod earring is close to the cleaning brush 6, a detection signal is sent to the controller, and the controller starts the rotary motor to drive the cleaning brush 6 to rotate to wipe the end face 22 of the piston rod earring.

[0027] like Figure 3 As shown, the visual positioning component includes a CCD camera 9, a lens 10 and a light source 11. The lens 10 is installed on the CCD camera 9, and the light source 11 is located in front of the lens 10. The CCD camera 9 is connected to an image comparator through a data transmission line, and the image comparator is connected to the controller. The image comparator stores a standard picture of the piston rod earring. When the manipulator moves the piston rod earring in front of the lens 10 and the light source 11, the CCD camera 9 takes a picture of the piston rod earring and sends it to the image comparator. The image comparator compares the taken picture with the standard picture to determine whether the two coincide, and sends the comparison result to the controller to determine whether the manipulator has a deviation in the clamping direction and angle of the piston rod earring 4. When the comparison result has a deviation, the controller controls the manipulator to adjust the clamping angle of the piston rod earring 4, so as to timely find the placement position of the piston rod earring and accurately load the piston rod earring 4.

[0028] A horizontal camera fixing plate 12 is installed on the crossbeam 7, and a guide rail 13 extending in the front-to-back direction is installed on the camera fixing plate 12. A slider 14 matching the guide rail 13 is fixedly installed at the bottom of the CCD camera 9, and the CCD camera 9 can move forward and backward along the guide rail 13, so that the focal length of the CCD camera 9 can be flexibly adjusted. Side fixing plates 21 are fixed on both sides of the slider 14, and waist-shaped holes extending in the front-to-back direction are provided on the side fixing plates 21. When the position of the CCD camera 9 on the camera fixing plate 12 is adjusted, the bolts are tightened in the waist-shaped holes to fix the CCD camera 9.

[0029] A lens support frame 15 is installed on the camera fixing plate 12 in front of the guide rail 13. The lens support frame 15 is provided with a lens positioning groove 16. The lens positioning groove 16 supports and positions the lens 10 to keep the lens 10 fixed and prevent it from shaking.

[0030] An L-shaped light source support frame 17 is fixedly installed on the front end of the camera fixing plate 12. The vertical edge of the light source support frame 17 is used to install the light source 11 through screws. The bottom edge of the light source support frame 17 is provided with a long hole 18 extending along the front-to-back direction. The light source support frame 17 is installed on the camera fixing plate 12 through bolts in the long hole 18. Therefore, the position of the light source 11 can be adjusted front and back through the light source support frame 17 to provide an appropriate amount of fill light for the lens 10.

[0031] The bracket 1 is also provided with a waste liquid tank 19 with an open top, which is located below the nozzle 2 and the cleaning brush 6. The waste liquid tank 19 can receive waste water and foreign matter splashed by the nozzle 2 and the cleaning brush 6 when they are working. A waste discharge hole 20 is provided at the bottom of the waste liquid tank 19, which is connected to the waste liquid collection tank through a hose, and waste water and foreign matter are discharged from the waste liquid tank 19 through the waste discharge hole 20.

[0032] The working process of the present invention is as follows: the manipulator grabs the piston rod earring 4 to the nozzle 2, and after the first photoelectric sensor 3 detects the piston rod earring 4, the controller starts the solenoid valve of the nozzle 2, sprays the cleaning agent on the piston rod earring 4, and removes the oil stains on its end surface; then the manipulator moves the piston rod earring 4 to the cleaning brush 6, the second photoelectric sensor 8 detects the piston rod earring, and the controller starts the rotating motor, which drives the cleaning brush 6 to rotate at a high speed to wipe the dirt and cleaning agent remaining on the end surface 22 of the piston rod earring. After the end surface of the piston rod earring is cleaned, the manipulator moves it to the front of the light source 11 of the visual positioning component, and the CCD camera 9 takes the image of the piston rod earring 4, and uses the image comparator to align the placement position of the piston rod earring 4, so that the manipulator can accurately load the piston rod earring 4.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for cleaning a piston rod earring, characterized in that: The cleaning is realized by a piston rod earring positioning cleaning mechanism, which includes a bracket, a nozzle, an end face cleaning component and a visual positioning component; The support is in the shape of a gantry, and the nozzle, the end surface cleaning component and the visual positioning component are installed on the crossbeam of the support; The spray head is provided with an electromagnetic valve, the spray head is connected to a water pump and a detergent tank in sequence through a hose, and the spray head can spray detergent toward the end surface of the piston rod earring; a first photoelectric sensor is installed on the bracket at the spray head, the first photoelectric sensor is connected to a controller, and the controller is connected to the electromagnetic valve; The end face cleaning assembly comprises a rotating motor, a rotating seat and a cleaning brush, wherein the rotating motor is mounted on the crossbeam, the rotating seat is mounted on the output shaft of the rotating motor, and the cleaning brush is mounted on the rotating seat; The visual positioning component includes a CCD camera, a lens and a light source, wherein the lens is mounted on the CCD camera, the light source is located in front of the lens, the CCD camera is connected to an image comparator, and the image comparator is connected to the controller; A second photoelectric sensor is installed on the crossbeam at the cleaning brush, the second photoelectric sensor is connected to a controller, and the controller is connected to the rotating motor; The piston rod earring positioning cleaning method includes the following steps: The manipulator grabs the piston rod earring to the nozzle. After the first photoelectric sensor detects the piston rod earring, the controller starts the solenoid valve of the nozzle to spray the cleaning agent on the piston rod earring to remove the oil stains on its end surface. The manipulator moves the piston rod earring to the cleaning brush, the second photoelectric sensor detects the piston rod earring, the controller starts the rotary motor, and the rotary motor drives the cleaning brush to rotate at a high speed to wipe the dirt and cleaning agent remaining on the end surface of the piston rod earring; After the end face of the piston rod earring is cleaned, the robot moves it in front of the light source of the visual positioning component. The CCD camera takes the image of the piston rod earring and uses the image comparator to align the placement of the piston rod earring, so that the robot can accurately load the piston rod earring.

2. The piston rod earring positioning and cleaning method according to claim 1, characterized in that: The bracket is also provided with a waste liquid tank with an open top, and the waste liquid tank is located below the spray head and the cleaning brush.

3. The piston rod earring positioning and cleaning method according to claim 2, characterized in that: A waste discharge hole is provided at the bottom of the waste liquid tank, and the waste discharge hole is connected to the waste liquid collection tank through a hose.

4. The piston rod earring positioning and cleaning method according to any one of claims 1 to 3, characterized in that: A horizontal camera fixing plate is installed on the crossbeam, a guide rail extending in the front-rear direction is installed on the camera fixing plate, a sliding block matching the guide rail is fixedly installed on the bottom of the CCD camera, and the camera can move forward and backward along the guide rail.

5. The piston rod earring positioning and cleaning method according to claim 4, characterized in that: A lens support frame is installed on the camera fixing plate in front of the guide rail, and a lens positioning groove is provided on the lens support frame, and the lens positioning groove supports and positions the lens.

6. The piston rod earring positioning and cleaning method according to claim 5, characterized in that: An L-shaped light source support frame is fixedly installed on the front end of the camera fixing plate. The bottom edge of the light source support frame is provided with a long hole extending in the front-to-back direction. The light source support frame is installed on the camera fixing plate by bolts in the long hole; the light source is installed on the vertical edge of the light source support frame.

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