Automatic sand cleaning machine with visual detection for sand mold

Abstract

The present application relates to sand cleaning machine technical field, especially to a kind of sand mould automatic sand cleaning machine with visual detection, realize can automatically clean sand, automatic detection, it is convenient to float sand recovery sand mould automatic sand cleaning machine.A kind of sand mould automatic sand cleaning machine with visual detection, comprising: conveyor belt, the conveyor belt two ends are respectively provided with piece loading station and piece outlet station, and the top of piece loading station is provided with feeding sensor;Sand cleaning mechanism, including box, mobile spray head, cleaning spray head and two groups of baffle, and box is straddled on conveyor belt.The PLC automation control program of the present application is combined by setting conveyor belt, sand cleaning mechanism, recovery mechanism, visual detection mechanism and electric control cabinet, realizes the automation of sand cleaning and detection in sand cleaning process, improves sand mould production efficiency and detection precision, greatly reduces the occurrence of manual detection missed detection, wrong detection, float sand automatic recovery, can improve the working environment of staff and equipment, with good practical significance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sand cleaning machine, in particular to a sand mold automatic sand cleaning machine with visual detection. BACKGROUND

[0002] Sand mold is a mold cavity of a casting made of raw sand, binder and other auxiliary materials in the casting production process.

[0003] After sand mold casting, the surface of the sand mold taken out of the sand box has a large amount of floating sand, so it is necessary to clean the surface after sand mold casting, and at the same time, in order to ensure the production efficiency of the sand mold, high-efficiency sand cleaning of the sand mold is very important, especially when the sand mold surface floating sand is cleaned by manually holding a high-pressure gun, the worker needs to clean, observe and move the sand mold at the same time, which is very labor-intensive, and the high-pressure fluid causes the floating sand to scatter everywhere, the working environment is poor, the scattered floating sand is not easy to recycle, and may also cause wear and tear to the surrounding equipment, affecting the service life of the equipment, and finally the worker needs to detect whether the floating sand is cleaned, and the manual detection method may also cause false detection and missed detection due to light or detection angle.

[0004] Therefore, considering the importance of improving the manual sand cleaning method of the sand mold, a sand mold automatic sand cleaning machine with visual detection is proposed, which can automatically clean sand, automatically detect and facilitate floating sand recycling. SUMMARY

[0005] Therefore, considering the importance of improving the sand cleaning method of the sand mold, a sand mold automatic sand cleaning machine with visual detection is proposed, which can automatically clean sand, automatically detect and facilitate floating sand recycling.

[0006] The purpose of the present application is to provide a sand mold automatic sand cleaning machine with visual detection, which can automatically clean sand, automatically detect and facilitate floating sand recycling.

[0007] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0008] A sand mold automatic sand cleaning machine with visual detection, comprising:

[0009] A conveying belt, the conveying belt is provided with an upper part work station and an outgoing work station at both ends, respectively, and an upper part work station is provided with an upper part sensor above;

[0010] The sand cleaning mechanism comprises a box body, a movable nozzle, a cleaning nozzle and two sets of baffles, the box body is arranged across the conveying belt, the two ends of the box body are respectively provided with an inlet closing door and an outlet closing door, and a driving member for controlling the opening and closing of the closing door is arranged, a movable nozzle driving member is arranged in the box body to control the multi-angle sand cleaning movement of the movable nozzle, the cleaning nozzle is arranged close to the outlet closing door, the driving direction of the cleaning nozzle is from the middle to the two sides of the inlet closing door, and the two sets of baffles are arranged on the two sides of the conveying belt.

[0011] The recycling mechanism comprises a recycling box and an air amplifier, the recycling box is communicated with the bottom of the box body, a material level meter is arranged in the recycling box, and the driving direction of the air amplifier is from the inside of the recycling box to the outside of the recycling box.

[0012] The visual detection mechanism comprises a detection box, an industrial camera and a light homogenizing lamp, the detection box is communicated on one side of the outlet end of the box body, the detection box is arranged across the conveying belt, and the inlet and outlet ends of the detection box are respectively provided with a light shielding cloth.

[0013] The electric control cabinet is arranged on one side of the conveying belt, the electric control cabinet is connected with a control console through a cable, the feeding sensor, the movable nozzle driving member, the cleaning nozzle driving member, the conveying belt driving member, the material level meter, the air amplifier, the industrial camera and the light homogenizing lamp are electrically connected with a PLC in the electric control cabinet, and a display screen is arranged on the front side of the electric control cabinet.

[0014] Preferably, the feeding work station is provided with a tray, the outer wall of the tray is provided with an anti-reflection black coating, and the feeding sensor is a photoelectric sensor.

[0015] Preferably, the driving member for controlling the opening and closing of the closing door is an electric push rod.

[0016] Preferably, the driving member of the movable nozzle is one or both of a lead screw linear module or a rotary motor, so as to control the circular motion or linear motion of the movable nozzle.

[0017] Preferably, the box body is provided with conveying belt through holes on the two sides, and the two sets of baffles are arranged on the inner walls of the box body and arranged outside the upper and lower conveying belts.

[0018] Preferably, the inner wall of the detection box is coated with an anti-reflection black coating.

[0019] The present application has at least the following advantages:

[0020] 1. The combination of the PLC automatic control program of the conveying belt, the sand cleaning mechanism, the recycling mechanism, the visual detection mechanism and the electric control cabinet realizes the automation of sand cleaning and detection in the sand cleaning process, improves the sand mold production efficiency and detection precision, greatly reduces the occurrence of missed detection and wrong detection of manual detection, automatically recycles the floating sand, can improve the working environment of the workers and the equipment, and has good practical significance.

[0021] 2. By setting the multi-angle sand cleaning moving nozzle, the linear module of the lead screw and the rotary motor are used in combination, two movement modes can be provided, the moving nozzle linearly moves while rotating in a circle, or the moving nozzle rotates in a circle while linearly moving, thereby realizing the effect of high-pressure sand cleaning of the moving nozzle without dead angle. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0023] Fig. 1 It is a structural schematic diagram of the automatic sand cleaning machine;

[0024] Fig. 2 It is a partial side sectional view of the automatic sand cleaning machine box;

[0025] Fig. 3 It is a side sectional view of the automatic sand cleaning machine.

[0026] In the figure: 1, conveying belt; 2, sand cleaning mechanism; 201, box; 202, moving nozzle; 203, cleaning nozzle; 204, baffle; 3, recovery mechanism; 301, recovery box; 302, air amplifier; 4, visual detection mechanism; 401, detection box; 402, industrial camera; 403, homogenizing lamp; 5, electric control cabinet; 6, control console; 7, feeding station; 8, discharging station. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present application more clear and obvious, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not used to limit the present application.

[0028] Embodiment one

[0029] Referring to Figs. 1-3 , a sand mold automatic sand cleaning machine with visual detection, comprising:

[0030] The conveying belt 1 is provided with a feeding station 7 and a discharging station 8 at both ends respectively, and an upper feeding sensor is arranged above the feeding station 7;

[0031] The sand-cleaning mechanism 2 includes a housing 201, a movable nozzle 202, a cleaning nozzle 203, and two sets of baffles 204. The housing 201 is straddling the conveyor belt 1. The two ends of the housing 201 are respectively provided with an inlet closed door and an outlet closed door, as well as a drive component for controlling the opening and closing of the closed doors. The movable nozzle 202 drive component is installed inside the housing 201 to control the movable nozzle 202 to perform multi-angle sand-cleaning movement. The cleaning nozzle 203 is located near the outlet closed door. The driving direction of the cleaning nozzle 203 is from the middle to both sides of the inlet closed door, that is, from the middle to both sides. The baffles 204 on both sides of the conveyor belt 1 block the sides.

[0032] Although only a single cleaning nozzle 203 is shown in the figure, this application does not preclude the use of multiple cleaning nozzles 203 in practical applications. For example, the cleaning nozzles can be symmetrically positioned near the inlet closed door of the housing 201, with the driving direction from the center towards both sides of the outlet closed door. A preferred option is to symmetrically arrange four cleaning nozzles 203 inside the housing 201, which will help to clean faster and more thoroughly, improve the working environment, increase work efficiency, and facilitate the discharge of waste sand into the recycling bin 301.

[0033] The recycling mechanism 3 includes a recycling bin 301 and an air amplifier 302. The recycling bin 301 is connected to the bottom of the box body 201. A level gauge is installed inside the recycling bin 301. The driving direction of the air amplifier 302 is from inside the recycling bin 301 to outside the recycling bin 301.

[0034] The visual inspection mechanism 4 includes an inspection box 401, an industrial camera 402 and a uniform light 403. The inspection box 401 is connected to one side of the outlet end of the box 201. The inspection box 401 is straddling the conveyor belt 1. The inlet and outlet ends of the inspection box 401 are respectively provided with light-shielding cloths.

[0035] The electrical control cabinet 5 is located on one side of the conveyor belt 1. The electrical control cabinet 5 is connected to the control panel 6, the feeding sensor, the moving nozzle 202 drive, the cleaning nozzle 203 drive, the conveyor belt 1 drive, the level gauge, the air amplifier 302, the industrial camera 402 and the uniform light 403 via cables. They are all electrically connected to the PLC inside the electrical control cabinet 5. A display screen is installed on the front of the electrical control cabinet 5.

[0036] In this embodiment: During operation, the sand mold is first placed at the loading station 7. After the loading sensor detects the location of the sand mold, the PLC control system controls the inlet sealing door to open, and the drive motor of the conveyor belt 1 rotates, driving the sand mold into the housing 201. After the sand mold reaches the designated position, the system controls the inlet sealing door to close. At this time, the sand mold is in a nearly enclosed housing 201. The moving nozzle 202 begins to spray high-pressure fluid, which removes the floating sand from the surface of the sand mold. Some of the floating sand falls onto the conveyor belt 1. The cleaning nozzle 203 near the outlet removes the floating sand from the conveyor belt 1 to both sides of the conveyor belt 1. The floating sand passes through both sides of the conveyor belt 1. The sand leaks into the bottom recycling bin 301 through the gaps; the level gauge in the recycling bin 301 is used to monitor the accumulation of loose sand, and the air amplifier 302 is used to suck out the loose sand in the recycling bin 301 and discharge it into the outer trolley for recycling; after a certain period of sand cleaning, the outlet sealing door is opened, the conveyor belt 1 runs, the sand mold enters the detection box 401, the industrial camera 402 takes pictures and detects, and transmits the collected information to the PLC control program; the PLC control program displays the detection results on the display screen. If the detection result is that there is loose sand, the PLC control program automatically marks the location of the loose sand when displaying, which is convenient for manual handling of loose sand;

[0037] The system automates the sand cleaning and inspection processes, improving sand mold production efficiency and inspection accuracy. It also significantly reduces the occurrence of missed or incorrect inspections during manual testing. The automatic recovery of floating sand improves the working environment for staff and equipment, making it highly practical.

[0038] In one embodiment, a tray is placed at the loading station 7. The outer wall of the tray is coated with an anti-reflective black coating, and the loading sensor is a photoelectric sensor.

[0039] In one embodiment, the actuator for the closed door switch is an electric push rod.

[0040] In one embodiment, the driving component of the movable nozzle 202 is one or both of a lead screw linear module and a rotary motor, to control the circular or linear motion of the movable nozzle 202. Specifically, when the lead screw linear module and the rotary motor are used together, two motion modes can be provided. The rotary motor is mounted on the slider of the lead screw linear module, and the movable nozzle 202 moves linearly while rotating in a circular motion; or the lead screw linear module is mounted on the output end of the rotary motor, and the movable nozzle 202 moves linearly while rotating in a circular motion, thereby achieving the effect of high-pressure sand removal without dead angles by the movable nozzle 202.

[0041] In one embodiment, the box 201 has conveyor belt 1 through openings on both sides, and two sets of baffles 204 are installed on the inner wall of the box 201. The baffles 204 block the outer side of the upper and lower conveyor belts 1. Specifically, the box 201 has a nearly closed design to prevent sand leakage during sand cleaning, and also facilitates the formation of a negative pressure environment by the air amplifier.

[0042] In one embodiment, the inner wall of the test chamber 401 is coated with an anti-reflective black coating. Specifically, the test chamber 401 is designed as a darkroom, with its four walls and top coated with an anti-reflective black coating to prevent reflections from the walls of the darkroom from affecting the test results. The darkroom is illuminated with a uniform light lamp to assist the industrial camera in taking pictures.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. An automatic sand cleaning machine for sand molds with visual inspection, characterized in that, include: Conveyor belt (1), with loading station (7) and unloading station (8) respectively at both ends of the conveyor belt (1), and loading sensor above the loading station (7); The sand cleaning mechanism (2) includes a housing (201), a movable nozzle (202), a cleaning nozzle (203), and two sets of baffles (204). The housing (201) spans the conveyor belt (1). The two ends of the housing (201) are respectively provided with an inlet closed door and an outlet closed door, as well as a drive component for controlling the opening and closing of the closed door. The movable nozzle (202) drive component is installed inside the housing (201) to control the movable nozzle (202) to perform multi-angle sand blowing motion. The cleaning nozzle (203) is set close to the outlet closed door. The driving direction of the cleaning nozzle (203) is from the middle to both sides of the inlet closed door. The baffles (204) on both sides of the conveyor belt (1) block the sides. The recycling mechanism (3) includes a recycling bin (301) and an air amplifier (302). The bottom of the recycling bin (301) and the box body (201) are connected. A level gauge is installed inside the recycling bin (301). The driving direction of the air amplifier (302) is from inside the recycling bin (301) to outside the recycling bin (301). The visual inspection mechanism (4) includes an inspection box (401), an industrial camera (402) and a uniform light (403). The inspection box (401) is connected to one side of the outlet end of the box body (201). The inspection box (401) is straddling the conveyor belt (1). The inlet and outlet ends of the inspection box (401) are respectively provided with light-shielding cloth. The electrical control cabinet (5) is located on one side of the conveyor belt (1). The electrical control cabinet (5) is connected to the control panel (6) via cables. The feeding sensor, moving nozzle (202) drive, cleaning nozzle (203) drive, conveyor belt (1) drive, level gauge, air amplifier (302), industrial camera (402) and uniform light (403) are respectively electrically connected to the PLC in the electrical control cabinet (5). The electrical control cabinet (5) is equipped with a display screen on the front side. A tray is placed at the loading station (7). The outer wall of the tray is coated with an anti-reflective black coating. The loading sensor is a photoelectric sensor. The box (201) has conveyor belt (1) through openings on both sides, and two sets of baffles (204) are installed on the inner wall of the box (201). The baffles (204) block the outer side of the upper and lower conveyor belts (1); The operation includes the following scenarios: the moving nozzle (202) starts to spray high-pressure air, the high-pressure gas blows away the floating sand on the surface of the sand mold, and some of the floating sand falls onto the conveyor belt (1). The cleaning nozzle (203) near the outlet blows the floating sand on the conveyor belt (1) to both sides of the conveyor belt (1), and the floating sand leaks into the bottom recycling box (301) through the gaps on both sides of the conveyor belt (1). The level gauge in the recycling box (301) is used to monitor the accumulation of floating sand, and the air amplifier (302) is used to suck out the floating sand in the recycling box (301) and discharge it into the outer trolley for recycling. By setting a moving nozzle with multiple angles for sand blowing, when the lead screw linear module and rotary motor are used together, two motion modes can be provided: the moving nozzle moves in a straight line while rotating in a circle; or the moving nozzle rotates in a circle while moving in a straight line, thereby achieving the effect of high-pressure sand blowing without dead angles.

2. The automatic sand cleaning machine for sand molds with visual inspection according to claim 1, characterized in that, The drive mechanism for the closed door switch is an electric push rod.

3. The automatic sand cleaning machine for sand molds with visual inspection according to claim 1, characterized in that, The inner wall of the testing box (401) is coated with an anti-reflective black coating.

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