A blow-type sand casting surface cleaning device

Abstract

This utility model relates to the technical field of surface cleaning devices for castings, specifically a blow-type surface cleaning device for sand castings. It includes a moving mechanism and a blowing mechanism. The moving mechanism includes a positioning base, a rotating base on top of which a first driving arm is connected to the top of the rotating base, and a second driving arm connected to the end of the first driving arm away from the rotating base. The blowing mechanism includes a three-arm support, which is fixedly connected to the end of the second driving arm away from the first driving arm. This utility model, by setting up a blowing mechanism, utilizes the angled arrangement of the inclined tube and nozzle. When high-pressure air is ejected, a reaction force is generated, driving the inner ring to rotate relative to the outer ring and the movable disk to rotate relative to the inclined tube, forming multi-directional, multi-angle rotational blowing. Combined with the rotation of the workpiece itself, this achieves all-round, no-dead-angle cleaning of residual molding sand on the surface of the sand casting, improving cleaning efficiency and cleanliness.

Description

Technical Field

[0001] This utility model relates to the technical field of casting surface cleaning devices, specifically a blow-type sand casting surface cleaning device. Background Technology

[0002] Casting demolding is a crucial process for removing solidified castings from the mold, directly affecting casting quality and production efficiency.

[0003] In the sand casting process, impurities such as molding sand often remain on the surface of the castings, which need to be removed by cleaning devices to ensure the accuracy of subsequent processing. Existing sand casting surface cleaning devices mostly adopt fixed blowing nozzles or single-direction rotating nozzle structures, which have limited blowing angles and coverage areas, making it difficult to effectively clean complex contours or recessed areas on the casting surface and easily creating cleaning dead zones.

[0004] In view of this, we propose a blow-type sand casting surface cleaning device. Utility Model Content

[0005] The purpose of this utility model is to provide a blow-type sand casting surface cleaning device. This blow-type sand casting surface cleaning device solves the problem that existing sand casting surface cleaning devices are limited by the blowing angle and coverage, making it difficult to effectively clean complex contours or recessed areas on the casting surface and easily forming cleaning dead corners.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A blow-type sand casting surface cleaning device includes a moving mechanism and a blowing mechanism. The moving mechanism includes a positioning base, a rotating base on top of the positioning base, a first driving arm connected to the top of the rotating base, and a second driving arm connected to the end of the first driving arm away from the rotating base. The blowing mechanism includes a three-arm support, a three-arm support fixedly connected to the end of the second driving arm away from the first driving arm, an extension support fixedly connected to the outer wall of the three-arm support, an outer ring fixedly connected to the outer wall of the extension support, an input hose connected to the outer wall of the outer ring, an inner ring rotatably connected to the inner wall of the outer ring, a sealed cavity between the inner ring and the outer ring, the input hose for inputting high-pressure air into the sealed cavity, a plurality of inclined tubes arranged in a circumferential array on the inner wall of the inner ring, a movable disk rotatably connected to the end of the inclined tubes away from the inner ring, and a plurality of inclined nozzles arranged in a circumferential array on the side of the movable disk away from the inclined tubes. A clamping mechanism is provided on the three-arm support for clamping the workpiece.

[0008] Preferably, the clamping mechanism includes a telescopic motor, and three telescopic motors are provided. The three telescopic motors are fixedly connected to the three-arm bracket. The output shaft of the telescopic motor is fixedly connected to a movable block. A drive motor is fixedly connected to the inner wall of the movable block. The output shaft of the drive motor is fixedly connected to a clamping rod.

[0009] Preferably, a lockable rotation damping structure is provided between the positioning base and the rotating base to adjust the rotation resistance and fix the rotation angle.

[0010] Preferably, an angle limiting component is provided at the connection between the rotating base and the first drive arm to limit the pitch angle range of the first drive arm.

[0011] Preferably, a rolling bearing is provided between the outer ring and the inner ring, and the outer ring of the bearing is interference-fitted with the outer ring, and the inner ring of the bearing is interference-fitted with the inner ring.

[0012] Preferably, the angled nozzle and the movable disc adopt a detachable snap-fit ​​structure, which facilitates the replacement of nozzles with different spray angles.

[0013] Preferably, the clamping rod is located inside the inner ring to facilitate clamping and blowing.

[0014] By employing the above technical solution, this utility model provides a blow-type sand casting surface cleaning device. It possesses at least the following beneficial effects:

[0015] 1. This utility model, by setting up a purging mechanism, can utilize the oblique setting of the oblique tube and oblique nozzle to generate a reaction force when high-pressure air is ejected, driving the inner ring to rotate relative to the outer ring and the movable disk to rotate relative to the oblique tube, forming a multi-directional and multi-angle rotational purging. Combined with the rotation of the workpiece itself, it can achieve all-round and dead-angle cleaning of residual molding sand on the surface of sand casting, improving cleaning efficiency and cleanliness.

[0016] 2. This utility model incorporates a moving mechanism that provides stable support with the help of a positioning base. The base is rotated to adjust the horizontal orientation, and the first and second drive arms can flexibly adjust their height and horizontal position through extension, retraction, and tilting movements. This allows the blowing mechanism to be precisely moved to the cleaning position of different sand castings, adapting to diverse cleaning scenarios and enhancing the flexibility and scope of operation.

[0017] 3. This utility model features a clamping mechanism that uses three circumferentially distributed telescopic motors to synchronously drive the clamping rods to approach and contact the workpiece. The motors drive the clamping rods to rotate, and the friction force drives the workpiece to rotate synchronously. This achieves stable clamping of the disc-shaped sand casting and, through the rotation of the workpiece in conjunction with the rotating nozzle of the blowing mechanism, further enhances the comprehensiveness of surface cleaning. At the same time, the design of the clamping rods being located inside the inner ring avoids interference with the blowing operation, ensuring a smooth and efficient cleaning process. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the moving mechanism of this utility model;

[0021] Figure 3 This is a schematic diagram of the outer ring structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the oblique tube of this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the three-arm support of this utility model;

[0024] Figure 6 This is a schematic diagram of the clamping mechanism of this utility model.

[0025] In the diagram: 1. Moving mechanism; 11. Positioning base; 12. Rotating base; 13. First drive arm; 14. Second drive arm; 2. Blowing mechanism; 21. Three-arm support; 22. Extension support; 23. Outer ring; 24. Input hose; 25. Inner ring; 26. Angled tube; 27. Movable disc; 28. Angled nozzle; 3. Clamping mechanism; 31. Telescopic motor; 32. Movable block; 33. Drive motor; 34. Clamping rod. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1 - Figure 6As shown, this utility model provides a technical solution: a blow-type sand casting surface cleaning device, including a moving mechanism 1 and a blowing mechanism 2. The moving mechanism 1 includes: a positioning base 11, a rotating base 12 disposed on the top of the positioning base 11, a first driving arm 13 connected to the top of the rotating base 12, and a second driving arm 14 connected to the end of the first driving arm 13 away from the rotating base 12. The positioning base 11 serves as the fixed foundation for the entire device, supporting the rotating base 12. The rotating base 12 can rotate relative to the positioning base 11 to adjust the horizontal direction. The first driving arm 13 connected to the top of the rotating base 12 can move on its own. The second drive arm 14, located away from the rotating base 12, is driven to move further to adjust its height and horizontal position, thereby moving the three-arm support 21, which is fixedly connected to the end of the first drive arm 13, to the position to be cleaned on the surface of the sand casting. The purging mechanism 2 includes: a three-arm support 21, which is fixedly connected to the end of the second drive arm 14 away from the first drive arm 13; an extension support 22 is fixedly connected to the outer wall of the three-arm support 21; an outer ring 23 is fixedly connected to the outer wall of the extension support 22; an input hose 24 is connected to the outer wall of the outer ring 23; and an inner ring is rotatably connected to the inner wall of the outer ring 23. A sealed cavity is provided between the inner ring 25 and the outer ring 23. An input hose 24 is used to input high-pressure air into the sealed cavity. Several oblique tubes 26 are arranged in a circumferential array on the inner wall of the inner ring 25. A movable disc 27 is rotatably connected to the end of each oblique tube 26 away from the inner ring 25. Several oblique nozzles 28 are arranged in a circumferential array on the side of the movable disc 27 away from the oblique tubes 26. A three-arm support 21 supports the outer ring 23 via an extension support 22 fixed to the outer wall. The input hose 24 connected to the outer wall of the outer ring 23 inputs high-pressure air into the sealed cavity between it and the inner ring 25, which is rotatably connected to the inner wall. The high-pressure air flows through... The air enters the movable disk 27 rotatably connected to the end of the inclined tube 26, which is arranged in a circumferential array on the inner wall of the inner ring 25, and then sprays out from the inclined nozzles 28 arranged in a circumferential array on one side of the movable disk 27. At the same time, due to the inclined arrangement of the inclined tube 26 and the inclined nozzles 28, the reaction force generated when the high-pressure air is sprayed drives the inner ring 25 to rotate relative to the outer ring 23 and the movable disk 27 to rotate relative to the inclined tube 26, so that the inclined nozzles 28 form a multi-directional and multi-angle rotational purging, realizing a comprehensive and efficient cleaning of residual molding sand on the surface of the sand casting. A clamping mechanism 3 is provided on the three-arm support 21, which is used to clamp the workpiece.

[0028] The clamping mechanism 3 includes three telescopic motors 31, which are fixedly connected to the three-arm bracket 21. The output shaft of the telescopic motor 31 is fixedly connected to a movable block 32. A drive motor 33 is fixedly connected to the inner wall of the movable block 32. The output shaft of the drive motor 33 is fixedly connected to a clamping rod 34. The three-arm bracket 21 serves as the fixed foundation for the clamping mechanism 3, supporting and fixing the three telescopic motors 31. The output shaft of the telescopic motor 31 drives the movable block 32 to extend and retract axially via linear drive to adjust the distance from the sand casting. The drive motor 33, fixed to the inner wall of the movable block 32, transmits rotational power to the clamping rod 34 connected to its output shaft. The three circumferentially distributed clamping rods 34 move closer to the center and contact the surface of the casting under the synchronous control of the telescopic motors 31. The drive motor 33 further drives the clamping rods 34 to rotate, thereby rotating the clamped disc-shaped sand casting.

[0029] A lockable rotational damping structure is provided between the positioning base 11 and the rotating base 12 to adjust the rotational resistance and fix the rotation angle. An angle limiting component is provided at the connection between the rotating base 12 and the first drive arm 13 to limit the pitch angle range of the first drive arm 13. A rolling bearing is provided between the outer ring 23 and the inner ring 25, and the outer ring of the bearing is interference-fitted with the outer ring 23, and the inner ring of the bearing is interference-fitted with the inner ring 25. The oblique nozzle 28 and the movable disc 27 adopt a detachable snap-fit ​​structure to facilitate the replacement of nozzles with different spray angles. The clamping rod 34 is located inside the inner ring 25 for convenient clamping and blowing.

[0030] In use, the blowing-type sand casting surface cleaning device of this utility model has a positioning base 11 fixed to the ground or workbench for stable support. The rotating base 12 rotates relative to the positioning base 11 to adjust its horizontal position, driving the first drive arm 13 connected to the top to rotate to the area of ​​the sand casting to be cleaned. The first drive arm 13 changes its length and angle through its extension, retraction, or pitching movements, thereby pushing the second drive arm 14 connected to its end to move. The second drive arm 14 further adjusts its height and horizontal distance through extension, retraction, or swinging, precisely moving the three-arm support 21 fixed at its end to the position to be cleaned on the surface of the sand casting. At this time, the three telescopic motors 31 fixed on the three-arm support 21 start synchronously, and their output shafts drive the movable block 32 to move axially toward the center. The movable block 32 drives the drive motor 33 and the clamping rod 34 fixed on the inner wall to move, so that the three circumferentially distributed clamping rods 34 contact the disc-shaped sand casting. On the outer peripheral surface, the drive motor 33 starts and drives the clamping bar 34 to rotate through the output shaft. The friction force drives the cylindrical sand casting being clamped to rotate synchronously. At the same time, the three-arm support 21 inputs high-pressure air into the sealed cavity between the outer ring 23 and the inner ring 25 through the input hose 24 connected to the outer wall of the outer ring 23 supported by the extension support 22. The high-pressure air enters the movable disk 27 through the inclined pipe 26 on the inner wall of the inner ring 25 and is sprayed out obliquely from the inclined nozzle 28. The reaction force generated by the oblique airflow drives the inner ring 25 to rotate relative to the outer ring 23 and the movable disk 27 to rotate relative to the inclined pipe 26, so that the inclined nozzle 28 forms a multi-directional rotating sweeping. Combined with the rotation of the sand casting itself, it achieves all-round, dead-angle-free cleaning of the residual molding sand on the surface of the casting. After cleaning, the telescopic motor 31 drives the movable block 32 to move the clamping bar 34 away from the workpiece. The moving mechanism 1 drives the sweeping mechanism 2 to reset or move to the next cleaning station.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A blow-type sand casting surface cleaning device, comprising a moving mechanism (1) and a blowing mechanism (2), characterized in that: The moving mechanism (1) includes: A positioning base (11) is provided with a rotating base (12) on its top. A first driving arm (13) is connected to the top of the rotating base (12). A second driving arm (14) is connected to the end of the first driving arm (13) away from the rotating base (12). The purging mechanism (2) includes: A three-arm support (21) is fixedly connected to the end of the second drive arm (14) away from the first drive arm (13). An extension support (22) is fixedly connected to the outer wall of the three-arm support (21). An outer ring (23) is fixedly connected to the outer wall of the extension support (22). An input hose (24) is connected to the outer wall of the outer ring (23). An inner ring (25) is rotatably connected to the inner wall of the outer ring (23). A sealed cavity is provided between the inner ring (25) and the outer ring (23). The input hose (24) is used to input high-pressure air into the sealed cavity. Several inclined tubes (26) are arranged in a circular array on the inner wall of the inner ring (25). A movable disc (27) is rotatably connected to the end of the inclined tube (26) away from the inner ring (25). Several inclined nozzles (28) are arranged in a circular array on the side of the movable disc (27) away from the inclined tube (26). The three-arm support (21) is provided with a clamping mechanism (3), which is used to clamp the workpiece.

2. The surface cleaning device for blow-through sand castings according to claim 1, characterized in that: The clamping mechanism (3) includes a telescopic motor (31), and three telescopic motors (31) are provided. The three telescopic motors (31) are fixedly connected to the three-arm bracket (21). The output shaft of the telescopic motor (31) is fixedly connected to a movable block (32). A drive motor (33) is fixedly connected to the inner wall of the movable block (32). The output shaft of the drive motor (33) is fixedly connected to a clamping rod (34).

3. The surface cleaning device for blow-through sand castings according to claim 1, characterized in that: A lockable rotation damping structure is provided between the positioning base (11) and the rotating base (12) to adjust the rotation resistance and fix the rotation angle.

4. The surface cleaning device for blow-through sand castings according to claim 1, characterized in that: An angle limiting component is provided at the connection between the rotating base (12) and the first drive arm (13) to limit the pitch angle range of the first drive arm (13).

5. The surface cleaning device for blow-through sand castings according to claim 1, characterized in that: A rolling bearing is provided between the outer ring (23) and the inner ring (25), and the outer ring of the bearing is interference-fitted with the outer ring (23), and the inner ring of the bearing is interference-fitted with the inner ring (25).

6. The surface cleaning device for blow-through sand castings according to claim 1, characterized in that: The angled nozzle (28) and the movable disc (27) adopt a detachable snap-fit ​​structure, which makes it easy to replace nozzles with different spray angles.

7. The surface cleaning device for blow-through sand castings according to claim 2, characterized in that: The clamping rod (34) is located inside the inner ring (25) for easy clamping and blowing.

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