Surface cleaning device and method for resin sand casting

Abstract

The invention relates to the technical field of resin sand casting surface sand cleaning, and particularly discloses a surface cleaning device and method for a resin sand casting, and the device comprises a rack, a lifting unit and a processing mechanism formed by sequentially connecting a reversing structure, a position adjusting structure and a power structure. The reversing structure can drive a mechanism below to do revolution motion so as to enlarge the cleaning range, and meanwhile, the direction is kept stable through a unique space connecting rod; the position adjusting structure achieves pitching rotation of the cleaning head in the vertical plane and accurate movement in the horizontal direction through a worm and gear pair and a screw and guide rod mechanism. And the power structure finally drives the cleaning brush to rotate at a high speed and move up and down in a reciprocating manner, and synchronously drives the air nozzle to blow scraps. Through multi-stage and multi-degree-of-freedom space compound motion, the cleaning brush can be precisely attached to the complex curved surface of the casting, and all-directional automatic cleaning is achieved; and mechanical brushing and synchronous air blowing modes are adopted, so that the cleaning cleanliness is effectively improved, and secondary pollution is prevented.

Description

Technical Field

[0001] This invention relates to the field of surface sand removal technology for resin sand castings, specifically to a surface cleaning device and method for resin sand castings. Background Technology

[0002] As a common molding process, resin sand casting inevitably leaves a large amount of sand particles, coatings and other residues on the surface of the casting after it is formed. Thorough cleaning of these residues is a key subsequent process to ensure the surface quality of the casting, which directly affects the processing accuracy and appearance of the product. At present, in addition to the traditional inefficient manual cleaning method, the industry usually also uses some preliminary mechanized cleaning equipment.

[0003] However, the existing sand-removing devices have a relatively simple movement mode. Their cleaning mechanisms can usually only perform simple linear or oscillating movements, and the rotation of the casting is limited to a single axis. For castings with complex geometries, deep cavities, narrow slits, or irregular curved surfaces, this "single-action" mode makes it difficult for the cleaning tool to always effectively fit and track all surface contours, easily creating blind spots and resulting in incomplete cleaning. In addition, the debris and dust generated during the cleaning process are difficult to remove in time, which can easily cause secondary pollution, affecting the sustainability of the cleaning effect and the cleanliness of the operating environment. Summary of the Invention

[0004] The purpose of this invention is to provide a surface cleaning device and method for resin sand castings to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a surface cleaning device for resin sand castings, comprising a pad, a cylinder lifting unit, a crossbeam, and a processing mechanism. The top of the pad is fixedly connected to the cylinder lifting unit, and the top side of the cylinder lifting unit is embedded and fixedly connected to the crossbeam. The processing mechanism is locked and fixed to the front side of the crossbeam. The processing mechanism includes a reversing structure that is fastened to the crossbeam at the rear. The bottom of the reversing structure is connected to an adjusting structure, which is used to drive the adjusting structure to rotate in a circular trajectory and keep the adjusting structure facing a fixed position. The adjusting structure is used to drive a power structure connected to its front side to rotate in a vertical plane and move left and right. The power structure is used to drive a cleaning brush connected to its front right side to rotate and move up and down. An air nozzle is provided above the cleaning brush, which moves up and down synchronously with it, and the air inlet of the air nozzle is connected to an external air source.

[0006] Preferably, the reversing structure includes a bearing block fastened to the crossbeam at the rear. A first motor is locked and fixed to the front right side of the bearing block. A first gear is connected to the bottom output shaft of the first motor. A second gear meshes with the left side of the first gear. The top middle side of the second gear is rotatably connected to the bearing block. A slant frame is fixedly connected to the bottom of the second gear. A first three-pronged member is provided through the top of the slant frame. The top middle side of the first three-pronged member rotates through the inside of the second gear, and the top side of the first three-pronged member is fixed to the bearing block. A second three-pronged member is provided through the bottom of the slant frame. The top side of the second three-pronged member is connected to the first three-pronged member through a tie rod. A support is fixedly connected to the bottom end of the second three-pronged member.

[0007] Preferably, there are three pull rods, and the three pull rods are rotatably connected to the three ends of the first three-pronged member and the second three-pronged member, respectively.

[0008] Preferably, the adjustment structure includes a housing that is fastened to the reversing structure at the top center. A second motor is fastened to the upper right side inside the housing. The output shaft of the second motor is connected to a first worm gear, and both sides of the first worm gear are rotatably connected to the housing. A first worm wheel is meshed and driven at the bottom of the first worm gear. A rotating column is fixed through the middle of the first worm wheel. The rear side of the rotating column is rotatably connected to the housing, and the front part of the rotating column rotates through the front side of the housing. The front end of the rotating column is connected to the displacement component.

[0009] Preferably, the displacement assembly includes a frame seat connected to the rotating column on the rear middle side, a third motor is locked and fixed inside the frame seat on the left side, a first screw is connected to the right output shaft of the third motor, an internal threaded sleeve is threaded to the outer surface of the first screw, and the front side of the internal threaded sleeve is connected to the moving plate, a guide rod is provided through the moving plate, and the guide rod is fixedly connected to the front side inside the frame seat.

[0010] Preferably, there are two guide rods arranged in parallel, and the two guide rods slide through the upper and lower sides of the inside of the moving plate, respectively.

[0011] Preferably, the power structure includes a frame connected to the rear of the adjustment structure. A fourth motor is locked and fixed to the bottom center of the frame. The front output shaft of the fourth motor is connected to a second worm gear. A second worm wheel is meshed and driven on the top side of the second worm gear. A support frame is fixedly connected to the right side of the second worm wheel. A fifth motor is locked and fixed to the left front side of the frame. The right output shaft of the fifth motor is connected to a helical gear rod via a connecting rod. The connecting rod rotates through the frame, the second worm wheel, and the support frame. The front side of the helical gear rod is engaged. The transmission is provided by a helical gear column, which is rotatably connected to the support frame on both the upper and lower sides. The front side of the helical gear column meshes with a helical gear plate for transmission. The right side of the helical gear plate has a rotating shaft that rotates through the inside of the slide. The rear side of the slide is threaded with a second screw, which is rotatably connected to the middle side of the slot frame. A sixth motor is locked and fixed at the top of the slot frame. The bottom output shaft of the sixth motor is connected to the second screw. The right end of the rotating shaft of the helical gear plate is connected to a cleaning brush. An air nozzle is locked and fixed at the top side of the slide.

[0012] Preferably, the slot frame is fixed to the right side of the front part of the support frame, and a trapezoidal slot is provided on the middle side of the front part of the support frame. The second screw is rotatably connected to the inside of the trapezoidal slot, and the rear part of the slide block is inserted and slidably inside the trapezoidal slot.

[0013] In addition, the present invention also provides a surface cleaning method for resin sand castings, which uses the above-mentioned surface cleaning apparatus for resin sand castings and includes the following steps:

[0014] S1. Place the resin sand casting to be cleaned in the work area, and adjust the overall height of the crossbeam and the processing mechanism through the cylinder lifting unit so that the cleaning brush and the air nozzle are initially aligned with the surface of the casting.

[0015] S2. Start the reversing structure, drive the first gear and the second gear to mesh and transmit through the first motor, drive the inclined frame to rotate around the axis of the first three-pronged component in a circular trajectory, thereby driving the adjustment structure and the power structure to move around the outer periphery of the casting. At the same time, under the constraint of the tie rod and the second three-pronged component, the orientation of the adjustment structure and the power structure is kept stable.

[0016] S3. The second motor in the adjustment structure drives the first worm and the first worm wheel to rotate the rotating column and displacement assembly in the vertical plane. Then, the third motor drives the first screw to move the moving plate left and right along the guide rod, thus achieving precise adjustment of the angle and left and right position of the power structure in the vertical plane.

[0017] S4. Start the power structure. The fourth motor, through the second worm gear and the second worm wheel, adjusts the pitch angle of the support frame. The fifth motor, through the helical gear rod and the helical gear column, drives the helical gear plate and the cleaning brush to rotate for surface grinding and cleaning. At the same time, the sixth motor drives the second screw to rotate, causing the slide and the cleaning brush and the air nozzle mounted on it to move up and down synchronously to adapt to the surface contour of the casting and to improve the cleaning effect by reciprocating up and down contact at this point. Throughout the cleaning process, the air nozzle continuously sprays compressed air to blow away the debris and dust generated during cleaning.

[0018] S5. After cleaning the designated area of ​​the casting, each moving part is reset according to the control command, and the processed casting is removed.

[0019] Preferably, in step S4, the rotation speed and vertical displacement speed of the cleaning brush and the gas pressure of the air nozzle can be matched and infinitely adjusted according to the adhesion strength of residual sand particles on the casting surface and the casting material.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] This invention constructs a multi-level, multi-degree-of-freedom spatial composite motion system through a revolution driven by a reversing structure, a pitch and horizontal two-dimensional adjustment controlled by a positioning structure, and a brush head rotation and lifting realized by a power structure. The design of this composite motion enables the cleaning brush and air nozzle to accurately reach and conform to various areas such as the deep concave and inclined surfaces of the complex curved surface of the casting, realizing one-time, all-round automated cleaning of large-sized, irregularly shaped resin sand castings, effectively eliminating blind spots and dead angles existing in traditional manual cleaning or simple mechanical cleaning.

[0022] This invention employs a collaborative operation mode of mechanical brushing and synchronous air blowing. Driven by multiple motors, the working angle, contact position, and rotation speed of the cleaning brush can be precisely controlled, ensuring effective removal of residual sand particles with varying adhesion strengths. Simultaneously, the air nozzles, moving synchronously with the brush head, instantly blow away debris and dust from the cleaning area. This not only significantly improves the cleanliness of a single cleaning cycle and effectively prevents secondary contamination but also ensures clear visibility for the operator, thereby further enhancing the precision of the cleaning process and its adaptability to complex workpieces.

[0023] This invention extensively utilizes worm gear pairs with self-locking functions in key transmission components, such as the first worm and first worm wheel for pitch adjustment, and the second worm and second worm wheel for fine adjustment. These effectively resist reaction forces and vibrations during the cleaning process, prevent mechanism displacement, and ensure stable operating posture. Simultaneously, the double parallel guide rod design in the displacement assembly and the trapezoidal groove guide structure in the lifting assembly jointly ensure the rigidity and stability of the actuators during linear movement, avoiding swaying and jamming, thereby extending the service life of the device and ensuring long-term operational reliability. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the processing mechanism of the present invention;

[0026] Figure 3 This is a schematic diagram of the commutation structure of the present invention;

[0027] Figure 4 This is a schematic diagram of the adjustment structure of the present invention;

[0028] Figure 5 This is a schematic diagram of the internal structure of the housing cover of the present invention;

[0029] Figure 6 This is a schematic diagram of the power structure of the present invention;

[0030] Figure 7 This is a schematic diagram of the connection between the second worm and the second worm wheel in this invention.

[0031] In the diagram: Pad-1, Cylinder Lifting Unit-2, Crossbeam-3, Processing Mechanism-4, Reversing Structure-41, Adjustment Structure-42, Power Structure-43, Cleaning Brush-44, Air Nozzle-45, Bearing Block-411, First Motor-412, First Gear-413, Second Gear-414, Diagonal Frame-415, First Three-Fork Component-416, Second Three-Fork Component-417, Tie Rod-418, Support-419, Compartment Cover-421, Second Motor-422, First Worm Gear-423, First Worm Wheel-424 Rotating column-425, displacement assembly-426, frame base-4261, third motor-4262, first screw-4263, moving plate-4264, guide rod-4265, carrier frame-431, fourth motor-432, second worm gear-433, second worm wheel-434, support frame-435, fifth motor-436, helical gear rod-437, helical gear column-438, helical gear plate-439, slide block-4310, second screw-4311, slot frame-4312, sixth motor-4313. Detailed Implementation

[0032] To further explain the technical solution of the present invention, a detailed description is provided below through specific embodiments.

[0033] Please see Figure 1 and Figure 2 The present invention provides a surface cleaning device for resin sand castings, including a pad 1, a cylinder lifting unit 2, a crossbeam 3 and a processing mechanism 4. The top of the pad 1 is fixedly connected to the cylinder lifting unit 2, the top side of the cylinder lifting unit 2 is embedded and fixedly fixed to the crossbeam 3, and the front side of the crossbeam 3 is locked and fixed to the processing mechanism 4, so as to realize the flexible adjustment of the overall height of the processing mechanism 4 to adapt to castings of different sizes.

[0034] The processing mechanism 4 includes a reversing structure 41 that is fastened to the crossbeam 3 at the rear. The bottom of the reversing structure 41 is connected to an adjusting structure 42, which drives the adjusting structure 42 to rotate in a circular trajectory and keep the adjusting structure 42 in a fixed orientation position, which can effectively expand the coverage of the cleaning operation. The adjusting structure 42 drives the power structure 43 connected to its front side to rotate in the vertical plane and move left and right, realizing precise two-dimensional control of the cleaning head position. The power structure 43 drives the cleaning brush 44 connected to its front right side to rotate and move up and down, ultimately converting power into specific cleaning actions. An air nozzle 45 is set above the cleaning brush 44, which moves up and down synchronously with it, ensuring the coordinated operation of air blowing and mechanical cleaning. The air inlet of the air nozzle 45 is connected to an external air source, providing a continuous air supply for immediate removal of debris.

[0035] Please see Figure 1 , Figure 2 and Figure 3 This invention provides a surface cleaning device for resin sand castings. The reversing structure 41 includes a bearing block 411 that is fastened to the crossbeam 3 at the rear. A first motor 412 is locked and fixed to the front right side of the bearing block 411 to provide the original power for reversing drive. A first gear 413 is connected to the bottom output shaft of the first motor 412 to output the rotational power of the first motor 412. A second gear 414 is meshed and driven on the left side of the first gear 413. The power transmission direction is changed and the speed is reduced and the torque is increased through the gear pair. The top middle side of the second gear 414 is rotatably connected to the bearing block 411 to ensure the stability during the transmission process.

[0036] The bottom of the second gear 414 is fixedly connected to a slant frame 415, which converts the rotational motion of the second gear 414 into the circular motion of the slant frame 415. A first three-pronged member 416 is provided through the top of the slant frame 415, serving as the fixed axis of the rotational motion of the slant frame 415. The top middle side of the first three-pronged member 416 rotates through the inside of the second gear 414, and the top side of the first three-pronged member 416 is fixed to the bearing block 411, ensuring the stability of the first three-pronged member 416 and preventing it from rotating with the second gear 414. A second three-pronged member 417 is provided through the bottom of the slant frame 415. The top side of the 7th component is connected to the first three-pronged component 416 via a tie rod 418. When the inclined frame 415 makes a circular motion, it forces the second three-pronged component 417 to always maintain its initial vertical orientation, thus realizing the "universal joint" function. The bottom end of the second three-pronged component 417 is fixedly connected to a support 419 for connecting and supporting the subsequent adjustment structure 42. There are three tie rods 418, and the three tie rods 418 are respectively rotatably connected to the three ends of the first three-pronged component 416 and the second three-pronged component 417. By defining a plane through three points, the orientation stability of the lower mechanism during the revolution is effectively guaranteed.

[0037] Please see Figure 2 , Figure 4 and Figure 5 This invention provides a surface cleaning device for resin sand castings. The adjustment structure 42 includes a housing 421 that is fastened to the top center of a reversing structure 41. A second motor 422 is fastened to the upper right side inside the housing 421 to provide power for pitch adjustment. A first worm gear 423 is connected to the left output shaft of the second motor 422, and both sides of the first worm gear 423 are rotatably connected to the housing 421 to convert the power of the second motor 422 into transmission of the first worm gear 423. A first worm wheel 424 is meshed with the bottom side of the first worm gear 423. A rotating column 425 is fixed through the middle of the first worm wheel 424. The rear side of the rotating column 425 is rotatably connected to the housing 421, and the front part of the rotating column 425 rotates through the front side of the housing 421 to ensure smooth rotation and fixed position of the rotating column 425. The front end of the rotating column 425 is connected to a displacement component 426, thereby transmitting the pitch adjustment power to the displacement component 426.

[0038] The displacement assembly 426 includes a frame 4261 connected to the rotating column 425 at its rear center. A third motor 4262 is locked and fixed inside the frame 4261 on the left side to provide power for horizontal movement. The output shaft of the third motor 4262 is connected to a first screw 4263, which converts the rotational motion into the linear propulsion motion of the first screw 4263. An internal threaded sleeve is threaded onto the outer surface of the first screw 4263, and the front side of the internal threaded sleeve is connected to the moving plate 4264. The rotational motion is converted into the linear movement of the moving plate 4264 through the threaded transmission. Two parallel guide rods 4265 are provided inside the moving plate 4264. The two guide rods 4265 slide through the upper and lower sides of the moving plate 4264 respectively, and the guide rods 4265 are fixedly connected to the front side inside the frame 4261. The double guide rod structure greatly enhances the stability and load-bearing capacity during the movement process.

[0039] Please see Figure 2 , Figure 6 and Figure 7 The present invention provides a surface cleaning device for resin sand castings. The power structure 43 includes a frame 431 connected to the rear side of the adjustment structure 42. A fourth motor 432 is locked and fixed at the bottom middle side of the frame 431 to provide power for the pitch fine adjustment of the cleaning head. The output shaft of the front part of the fourth motor 432 is connected to a second worm gear 433. The top side of the second worm gear 433 is engaged with a second worm wheel 434. The worm wheel and worm gear transmission is used again to achieve precise angle adjustment and self-locking. A support frame 435 is fixedly connected to the right side of the second worm wheel 434 to convert the rotational motion of the second worm wheel 434 into the pitch swing of the entire support frame 435.

[0040] The fifth motor 436 is locked and fixed on the left front side of the carrier 431, which provides rotational power for the cleaning brush 44. The output shaft on the right side of the fifth motor 436 is connected to the helical gear rod 437 through a connecting rod to realize the cross-axis transmission of power. The connecting rod rotates through the carrier 431, the second worm gear 434 and the support frame 435, ensuring that the power transmission remains continuous even if the support frame 435 pitches and swings.

[0041] The front side of the helical gear rod 437 is engaged with a helical gear column 438, realizing another vertical conversion of power. The upper and lower sides of the helical gear column 438 are rotatably connected to the support frame 435, and the front side of the helical gear column 438 is engaged with the helical gear plate 439, which ultimately transmits power to the helical gear plate 439 that drives the cleaning brush 44. The right side of the helical gear plate 439 has a rotating shaft that rotates through the inside of the slide 4310. The shaft is supported by the slide 4310 and is allowed to rotate on its own. The rear side of the slide 4310 is threaded with a second screw 4311. The second screw 4311 is rotatably connected to the middle side of the slot frame 4312. The rotational motion of the second screw 4311 is converted into the linear lifting and lowering of the slide 4310 through the threaded transmission.

[0042] The top of the trough frame 4312 is locked with a sixth motor 4313, which provides power for the lifting and lowering movement of the cleaning brush 44. The bottom output shaft of the sixth motor 4313 is connected to the second screw 4311 to transmit the rotational power to the second screw 4311. The right end of the helical gear plate 439 is connected to the cleaning brush 44, which ultimately drives the cleaning brush 44 to rotate at high speed to complete the cleaning operation. The top side of the slide 4310 is locked with an air nozzle 45 to ensure that the air nozzle 45 and the cleaning brush 44 lift and lower synchronously, always pointing at the cleaning area to blow away debris. The trough frame 4312 is fixed to the front right side of the support frame 435, and a trapezoidal groove is opened in the middle of the front of the support frame 435. The second screw 4311 is rotatably connected to the inside of the trapezoidal groove, and the rear of the slide 4310 is inserted and slid in the inside of the trapezoidal groove. With the constraint of the trapezoidal groove, the slide 4310, the cleaning brush 44, and the air nozzle 45 can only move vertically with precision, without other degrees of freedom, and the movement trajectory is stable and reliable.

[0043] This invention discloses a surface cleaning method for resin sand castings. Based on the aforementioned cleaning device with complex spatial adjustment capabilities, its core lies in enabling the cleaning brush 44 and air nozzle 45 to precisely conform to and approach the complex curved surface of the casting through multi-stage, multi-degree-of-freedom coordinated motion, achieving efficient and thorough automated cleaning. The method specifically includes the following steps:

[0044] First, fix and align the whole:

[0045] Place the resin sand casting to be cleaned in the working area in front of the device, start the cylinder lifting unit 2, drive the crossbeam 3 and the entire processing mechanism 4 to perform an overall lifting movement, so that the cleaning brush 44 and the air nozzle 45 are initially aligned with the surface of the casting, so as to achieve rapid and preliminary alignment of castings of different heights and sizes, and ensure that the cleaning brush 44 and the air nozzle 45 can initially approach the area of ​​the casting to be cleaned, laying the foundation for subsequent fine adjustment.

[0046] Second, change direction and revolve to expand the cleanup area:

[0047] The first motor 412 in the reversing structure 41 is activated, which drives the first gear 413 and the second gear 414 to mesh and transmit power. This drives the inclined frame 415, which is fixed to the second gear 414, to revolve around the axis of the first three-pronged member 416 in a circular trajectory. This motion is driven by the spatial parallel linkage mechanism formed by the three pull rods 418 and the second three-pronged member 417, which drives the bottom support 419 and the entire adjustment structure 42 connected to it to perform circular motion together. The effect of this step is that it drives the cleaning brush 44 and the air nozzle 45 to move around the outer contour of the casting, which greatly expands the cleaning range under a single positioning. More importantly, the linkage design based on the "universal joint" principle can ensure that the adjustment structure 42 and the power structure 43 below always maintain the initial vertical orientation during the revolution, thereby ensuring the reference posture and motion stability of subsequent fine adjustment.

[0048] Third, fine-tune the alignment to fit the curved surface:

[0049] 1. Pitch angle adjustment: The second motor 422 in the adjustment structure 42 is activated, which drives the first worm 423 to mesh with the first worm wheel 424. The first worm wheel 424 drives the rotating column 425 and the displacement component 426 fixed at its front end to rotate in the vertical plane, thereby realizing the pitch angle adjustment of the cleaning head relative to the revolution radius. This allows the cleaning brush 44 to be better aligned with the inclined surface or concave area of ​​the casting surface. The worm wheel and worm gear pair used has a self-locking function, which can effectively prevent the angle deviation caused by reaction force or vibration during the cleaning process.

[0050] 2. Horizontal position adjustment: The third motor 4262 in the displacement assembly 426 is activated to drive the first screw 4263 to rotate, so that the moving plate 4264, which is threaded to it, moves linearly in the left and right directions along two parallel guide rods 4265, thereby achieving fine adjustment of the horizontal position of the cleaning head and precisely controlling the contact point between the cleaning brush and the surface of the casting. The double guide rod structure ensures that the movement process is smooth and without deflection, with strong load-bearing capacity and high precision.

[0051] Fourth, power cleaning and synchronous blowing:

[0052] 1. Fine adjustment of cleaning head pitch: Start the fourth motor 432 in the power structure 43, and drive the support frame 435 and all its components to make a small range of pitch swing through the second worm gear 433 and the second worm wheel 434 to achieve the final fine adjustment of the working angle of the cleaning brush 44, so as to ensure that it can contact the curved surface of the casting at the best angle, improve cleaning efficiency and reduce unnecessary wear.

[0053] 2. Brush head rotation and lifting: The fifth motor 436 and the sixth motor 4313 are started simultaneously. The power of the fifth motor 436 is transmitted sequentially through the helical gear rod 437 and the helical gear column 438, and finally to the helical gear plate 439, driving the cleaning brush 44 to rotate at high speed for polishing and cleaning. At the same time, the sixth motor 4313 drives the second screw 4311 to rotate, causing the slide 4310 to move precisely up and down along the trapezoidal groove of the slot frame 4312. While the cleaning brush 44 is rotating, it can also perform up and down reciprocating motion, which enables it to effectively clean areas with vertical concave and convex features, realizing two-dimensional composite cleaning action.

[0054] 3. Synchronous dust blowing: Throughout the cleaning process, the air nozzle 45 moves up and down synchronously with the cleaning brush 44 and continuously sprays compressed air, which can immediately blow away the cleaned resin sand particles and dust from the cleaning area, avoiding the accumulation of debris that affects the cleaning effect and visibility, and preventing the cleaned area from being contaminated again, thus achieving simultaneous cleaning and sanitation.

[0055] Fifth, resetting and workpiece transfer:

[0056] Once the designated area of ​​the current casting has been cleaned, all motors are stopped according to the program. Then, the cylinder lifting unit 2 is raised, and each moving part of the processing mechanism 4 is reset to its initial safe position in sequence. Finally, the finished casting is removed and the next workpiece to be cleaned is placed in.

[0057] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A surface cleaning device for resin sand castings, characterized in that: Its structure includes a pad (1), a cylinder lifting unit (2) is fixedly connected to the top of the pad (1), a crossbeam (3) is embedded and fixed on the top side of the cylinder lifting unit (2), a processing mechanism (4) is locked and fixed on the front side of the crossbeam (3), the processing mechanism (4) includes a reversing structure (41) that is fastened to the crossbeam (3) on the rear side, an adjusting structure (42) is connected to the bottom of the reversing structure (41), which is used to drive the adjusting structure (42) to rotate in a circular trajectory and keep the adjusting structure (42) facing a fixed position, the adjusting structure (42) is used to drive the power structure (43) connected to its front side to rotate in a vertical plane and move left and right, the power structure (43) is used to drive the cleaning brush (44) connected to its front right side to rotate and move up and down, an air nozzle (45) is provided above the cleaning brush (44), which moves up and down synchronously with it, and the air inlet end of the air nozzle (45) is connected to an external air source.

2. The surface cleaning device for resin sand castings according to claim 1, characterized in that: The reversing structure (41) includes a bearing block (411) fastened to the rear side of the crossbeam (3). A first motor (412) is locked and fixed to the front right side of the bearing block (411). A first gear (413) is connected to the bottom output shaft of the first motor (412). A second gear (414) meshes with the left side of the first gear (413). The top middle side of the second gear (414) is rotatably connected to the bearing block (411). A slant bracket (415) is fixedly connected to the bottom of the second gear (414). The top of the inclined frame (415) is provided with a first three-pronged member (416), the top middle side of the first three-pronged member (416) is rotated inside the second gear (414), and the top side of the first three-pronged member (416) is fixed to the bearing block (411). The bottom of the inclined frame (415) is provided with a second three-pronged member (417), the top side of the second three-pronged member (417) is connected to the first three-pronged member (416) through a tie rod (418), and the bottom end of the second three-pronged member (417) is fixedly connected to a support (419).

3. The surface cleaning device for resin sand castings according to claim 2, characterized in that: There are three pull rods (418), and the three pull rods (418) are rotatably connected to the three ends of the first three-pronged member (416) and the second three-pronged member (417), respectively.

4. The surface cleaning device for resin sand castings according to claim 1, characterized in that: The adjustment structure (42) includes a hopper cover (421) that is fastened to the top center side of the reversing structure (41). A second motor (422) is fastened to the upper right side inside the hopper cover (421). The output shaft of the second motor (422) is connected to a first worm gear (423). The left and right sides of the first worm gear (423) are rotatably connected to the hopper cover (421). A first worm wheel (424) is meshed and driven on the bottom side of the first worm gear (423). A rotating column (425) is fixed through the middle of the first worm wheel (424). The rear side of the rotating column (425) is rotatably connected to the hopper cover (421). The front part of the rotating column (425) rotates through the front side of the hopper cover (421). The front end of the rotating column (425) is connected to the displacement component (426).

5. The surface cleaning device for resin sand castings according to claim 4, characterized in that: The displacement assembly (426) includes a frame base (4261) connected to the rotating column (425) at the rear center. A third motor (4262) is locked and fixed inside the frame base (4261) on the left side. The output shaft of the third motor (4262) is connected to a first screw (4263). The outer surface of the first screw (4263) is threaded with an internal thread sleeve, and the front side of the internal thread sleeve is connected to a moving plate (4264). A guide rod (4265) is provided through the moving plate (4264), and the guide rod (4265) is fixedly connected to the front side inside the frame base (4261).

6. The surface cleaning device for resin sand castings according to claim 5, characterized in that: Two guide rods (4265) are provided and are arranged in parallel. The two guide rods (4265) slide through the upper and lower sides of the inside of the sliding plate (4264).

7. The surface cleaning device for resin sand castings according to claim 1, characterized in that: The power structure (43) includes a frame (431) connected to the adjustment structure (42) at the rear. A fourth motor (432) is locked and fixed at the bottom center of the frame (431). A second worm gear (433) is connected to the front output shaft of the fourth motor (432). A second worm wheel (434) is meshed and driven on the top side of the second worm gear (433). A support frame (435) is fixedly connected to the right side of the second worm wheel (434). A fifth motor (436) is locked and fixed to the left front side of the frame (431). The right output shaft of the fifth motor (436) is connected to a helical gear rod (437) through a connecting rod. The connecting rod passes through and rotates inside the frame (431), the second worm wheel (434), and the support frame (435). A helical gear is meshed and driven on the front side of the helical gear rod (437). The column (438) is rotatably connected to the support frame (435) on both the upper and lower sides. The front side of the helical gear column (438) meshes with the helical gear plate (439) for transmission. The right side of the helical gear plate (439) is rotatably connected to the inside of the slide (4310) through the shaft. The rear side of the slide (4310) is threaded with a second screw (4311). The second screw (4311) is rotatably connected to the middle side of the slot frame (4312). The top of the slot frame (4312) is locked with a sixth motor (4313). The bottom output shaft of the sixth motor (4313) is connected to the second screw (4311). The right end of the shaft of the helical gear plate (439) is connected to the cleaning brush (44). The top side of the slide (4310) is locked with an air nozzle (45).

8. The surface cleaning device for resin sand castings according to claim 7, characterized in that: The slot frame (4312) is fixed to the right side of the front part of the support frame (435), and a trapezoidal slot is provided on the middle side of the front part of the support frame (435). The second screw (4311) is rotatably connected to the inside of the trapezoidal slot, and the rear part of the slide block (4310) is inserted and slids inside the trapezoidal slot.

9. A method for surface cleaning of resin sand castings, using a surface cleaning apparatus for resin sand castings according to any one of claims 1 to 8, characterized in that, Includes the following steps: S1. Place the resin sand casting to be cleaned in the work area, and adjust the overall height of the crossbeam (3) and the processing mechanism (4) by means of the cylinder lifting unit (2) so that the cleaning brush (44) and the air nozzle (45) are initially aligned with the surface of the casting. S2. Start the reversing structure (41), drive the first gear (413) and the second gear (414) to mesh and transmit through the first motor (412), drive the inclined frame (415) to rotate around the axis of the first three-pronged member (416) in a circular trajectory, thereby driving the adjustment structure (42) and the power structure (43) to move around the outer periphery of the casting. At the same time, under the constraint of the tie rod (418) and the second three-pronged member (417), the orientation of the adjustment structure (42) and the power structure (43) remains stable. S3. The first worm (423) and the first worm wheel (424) are driven by the second motor (422) in the adjustment structure (42), which drives the rotating column (425) and the displacement component (426) to rotate in the vertical plane. Then, the first screw (4263) is driven by the third motor (4262), so that the moving plate (4264) moves left and right along the guide rod (4265), and finally the precise adjustment of the angle and left and right position of the power structure (43) in the vertical plane is realized. S4. Start the power structure (43). The fourth motor (432) is driven by the second worm (433) and the second worm wheel (434) to adjust the pitch angle of the support frame (435). The fifth motor (436) is driven by the helical gear rod (437) and the helical gear column (438) to drive the helical gear plate (439) and the cleaning brush (44) to rotate for surface grinding and cleaning. At the same time, the sixth motor (4313) drives the second screw (4311) to rotate, which drives the slide (4310) and the cleaning brush (44) installed on it to move up and down synchronously with the air nozzle (45) to adapt to the surface contour of the casting and to improve the cleaning effect by reciprocating up and down contact at this point. During the entire cleaning process, the air nozzle (45) continuously sprays compressed air to blow away the debris and dust generated during cleaning. S5. After cleaning the designated area of ​​the casting, each moving part is reset according to the control command, and the processed casting is removed.

10. The surface cleaning method for resin sand castings according to claim 9, characterized in that: In step S4, the rotation speed and vertical displacement speed of the cleaning brush (44) and the gas pressure of the air nozzle (45) can be matched and infinitely adjusted according to the adhesion strength of residual sand particles on the casting surface and the casting material.

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