A sand removal device for casting automotive parts

Abstract

The application discloses a sand cleaning device for automobile part casting and relates to the technical field of sand cleaning. The device comprises a workbench and a swing mechanism. The swing mechanism is installed on the workbench and comprises an arc-shaped rack and a protection mechanism. The protection mechanism is installed on the workbench and comprises two polygonal plates. The application protects the casting part, avoids deformation caused by directly applying force on the casting part, and makes different positions of the casting part be located at the top and bottom through rotation. The casting part is vibrated in multiple directions through the force from the top and bottom, which makes the sand more easily fall off and improves the sand falling speed. The casting part can make the upper opening face downward, so that the bonded sand in the opening flows out of the casting part without the need of post-processing. The casting sand discharging speed in the casting part is improved through fast swing of the casting part, and the sand cleaning efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of sand removal technology, and in particular to a sand removal device for casting automotive parts. Background Technology

[0002] Sand removal is a crucial step in sand casting production. After the mold has been poured and cooled to a certain temperature, it is broken to separate the mold from the sand box, and the casting from the molding sand. The separated sand clumps are further broken up and fall through the grid holes onto the return sand conveyor belt. Adhesive sand on the casting surface needs to be cleaned using cleaning equipment. Currently, this adhesive sand is difficult to remove and is generally cleaned using a pneumatic hammer vibration sand cleaner. The principle of the pneumatic hammer vibration sand cleaner is to use a pneumatic hammer to forcefully strike the casting, causing it to vibrate and thus dislodge the adhesive sand. However, this method can easily cause deformation of the casting. Furthermore, the adhesive sand that has detached from the casting flows out through the opening of the casting via vibration, and it takes a certain amount of time to completely drain. If the casting has an upward-facing opening, the adhesive sand inside the opening cannot flow out. Therefore, we propose a sand cleaning device for automotive parts casting. Summary of the Invention

[0003] The present invention provides a sand removal device for casting automotive parts to address the aforementioned shortcomings of the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A sand-removing device for casting automotive parts includes a worktable and a swing mechanism, wherein the swing mechanism is mounted on the worktable and includes an arc-shaped rack.

[0006] The protective mechanism is installed on the workbench and includes two polygonal plates. A connecting rod is fixedly connected to one side of each polygonal plate. An electric telescopic rod is fixedly connected to one end of each connecting rod. A pressure frame one is fixedly mirrored at the top of each electric telescopic rod, and a pressure frame two is fixedly mirrored at the bottom of each electric telescopic rod.

[0007] The transmission mechanism is mounted on the workbench and includes two connecting frames. Each of the two connecting frames has a sliding groove on its opposite side. A spring is fixed to the inner wall of the sliding groove. A slider is fitted inside the sliding groove. One end of the spring is fixedly connected to the slider. A rotating shaft is rotatably connected to each of the two sliders on their opposite sides. A pulley is fixed to the outside of the rotating shaft.

[0008] A hammering mechanism is installed on the top of a polygonal plate. The hammering mechanism includes multiple triangular wheels, a frame is provided below the triangular wheels, a connecting column is fixed at the bottom of the frame, and a conical striking block is fixed at the bottom end of the connecting column.

[0009] A drive mechanism, which is mounted on one side of the transmission mechanism;

[0010] The workbench includes two bases, each base has a tabletop on top, and the tabletop has two arc-shaped grooves at the bottom. Sliding columns are fitted inside the arc-shaped grooves, and the bottom ends of the two sliding columns are fixedly connected to the bases respectively. Two connecting plates are fixed between the two bases.

[0011] The swing mechanism also includes a support plate fixed to the inner wall of one of the bases. A motor is fixed to the top of the support plate, and a gear is fixed to the output shaft end of the motor. One side of the gear meshes with an arc-shaped rack. The top of the arc-shaped rack is fixedly connected to the bottom of the platform. The swing mechanism swings back and forth to throw out the casting sand that has fallen out of the casting, thereby increasing the speed of casting sand discharge and eliminating the need for slow discharge through vibration.

[0012] The protective mechanism also includes two support plates fixed to the top of the table. Each of the two support plates has a base plate fixed to its opposite side. The two base plates are located at the bottom of the polygonal plate. Each support plate has a through groove. Each polygonal plate has a rotating shaft fixed to its opposite side. The rotating shaft is fitted inside the groove. One end of the rotating shaft is fixed to a limit plate. Multiple balls are installed on the side of the limit plate near the support plate. The balls are used to reduce the friction between the limit plate and the support plate. Multiple rotating shafts are rotatably connected to the inner wall of the groove. The rotating shafts can reduce the friction between the rotating shaft and the groove. Anti-slip textures are provided on the opposite side of the pressure frame. The protective mechanism protects the casting, achieving the effect of vibration stripping while avoiding deformation caused by directly applying force to the casting.

[0013] The transmission mechanism also includes a support plate two fixed to the top of the table. A rotating shaft four is rotatably connected inside the support plate two. Two pulleys two are fixed to the outside of the rotating shaft four. A pulley three is fixed to the outside of the rotating shaft two. The pulley three, pulley two, and pulley one are connected to the outside of the same belt. The two connecting frames are fixedly connected to the support plate one respectively. A one-way gear one is installed on the outside of one end of the rotating shaft four. The transmission mechanism causes the protective mechanism to rotate, realizing the hammering of the protective mechanism at different angles. The protective mechanism transmits the vibration force to the casting, realizing the removal of casting sand at different positions of the casting. Because the hammering is from top to bottom, the vibration direction is up and down, so the vibration transmitted to the casting is also up and down. If the casting is rotated so that different positions of the casting are all in the up and down direction, then the casting can be vibrated in multiple directions by the up and down force, making it easier to remove the casting sand.

[0014] The hammering mechanism also includes a rotating shaft five rotatably connected to two support plates two. Multiple triangular wheels are fixed to the outside of the rotating shaft five. Multiple ball bearings two are installed on the arc-shaped surface of the triangular wheels. A slider two is fixed to one side of the frame. A sliding groove frame is sleeved on the outside of the slider two. A spring two is fixed to the inner wall of the sliding groove frame. The top of the spring two is fixedly connected to the slider two. Support plates three are fixed to opposite sides of the two support plates two. The two support plates three are fixedly connected to the sliding groove frame respectively. A one-way gear two is fixed to the outside of one end of the rotating shaft five. The electric telescopic rod is connected to an external air source. The one-way gear one and the one-way gear two drive the rotating shaft to rotate in opposite directions. The hammering mechanism continuously hammers by installing triangular wheels at different angles to remove the material inside the casting.

[0015] The driving mechanism includes a motor two fixed to one side of one of the support plates two. A gear two is fixedly connected to the output shaft end of the motor two. The top of the gear two meshes with a one-way gear two, and the bottom of the gear two meshes with a one-way gear one. The driving mechanism drives the swing mechanism to operate.

[0016] Compared with existing technologies, the beneficial effects of this invention are:

[0017] 1. The present invention includes a swing mechanism and a protective mechanism. The swing mechanism swings back and forth to throw out the casting sand that has fallen out of the casting, thereby increasing the speed of casting sand discharge and eliminating the need for slow discharge through vibration. The protective mechanism protects the casting, achieving the effect of vibration discharge while avoiding deformation caused by direct force applied to the casting.

[0018] 2. This invention includes a transmission mechanism and a hammering mechanism. The transmission mechanism rotates the protective mechanism, enabling it to be hammered at different angles. The protective mechanism transmits the vibration force to the casting, causing the casting sand to fall off at different positions. Because the hammering is from top to bottom, the vibration direction is up and down, so the vibration transmitted to the casting is also up and down. If the casting is rotated so that different positions of the casting are all in the up and down direction, then the casting can be vibrated in multiple directions by the up and down force, making it easier to remove the casting sand. The hammering mechanism continuously hammers the casting by installing triangular wheels at different angles, removing the material inside the casting.

[0019] In summary, this equipment features a novel design and simple operation. It protects the castings, achieving the effect of vibration-based material removal while avoiding deformation caused by direct force applied to the castings. Furthermore, by rotating the castings, different positions of the castings are positioned vertically, and the vertical force vibrates the rotating castings in multiple directions, making it easier for the casting sand to fall off and increasing the material removal speed. Moreover, the rotating castings can have their upper opening facing downwards, allowing the adhering sand inside the opening to flow out of the castings without further processing. At the same time, the rapid oscillation of the castings increases the speed of casting sand discharge from the castings, improving sand removal efficiency. Attached Figure Description

[0020] Figure 1 This is a first three-dimensional structural schematic diagram of a sand-removing device for casting automotive parts proposed in this invention.

[0021] Figure 2 This is a second three-dimensional structural schematic diagram of a sand-removing device for casting automotive parts proposed in this invention.

[0022] Figure 3 for Figure 2 Enlarged structural diagram of point A inside;

[0023] Figure 4 for Figure 3 Enlarged structural diagram at point B;

[0024] Figure 5 This is a front view schematic diagram of a sand removal device for casting automotive parts proposed in this invention;

[0025] Figure 6 This is a schematic diagram of the protective mechanism of a sand-removing device for casting automotive parts proposed in this invention.

[0026] In the diagram: 1. Workbench; 11. Base; 12. Connecting plate; 13. Tabletop; 3. Protective mechanism; 301. Support plate one; 302. Base plate; 303. Slide groove two; 304. Rotating shaft two; 305. Limiting plate; 306. Polygonal plate; 307. Connecting rod; 308. Electric telescopic rod; 309. Pressure frame one; 310. Pressure frame two; 4. Transmission mechanism; 401. Support plate two; 402. Rotating shaft four; 403. One-way gear one; 404. Pulley two; 405. Connecting frame; 406. Slide groove one; 407. Spring 1. 408. Slider 1; 409. Rotating shaft 1; 410. Belt pulley 1; 411. Belt pulley 3; 412. Belt; 5. Hammering mechanism; 501. Rotating shaft 5; 502. One-way gear 2; 503. Triangular wheel; 504. Frame; 505. Connecting column; 506. Conical striking block; 507. Support plate 3; 508. Slide frame; 509. Slider 2; 510. Spring 2; 6. Drive mechanism; 61. Motor 2; 62. Gear 2. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0028] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; and they may refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0030] Example: Refer to Figure 1-6 A sand-removing device for casting automotive parts includes a worktable 1 and a swing mechanism. The swing mechanism is mounted on the worktable 1 and includes an arc-shaped rack.

[0031] The protective mechanism 3 is installed on the workbench 1. The protective mechanism 3 includes two polygonal plates 306. A connecting rod 307 is fixedly connected to one side of each polygonal plate 306. An electric telescopic rod 308 is fixedly connected to one end of each connecting rod 307. A pressure frame 1 309 is fixedly mirrored at the top of each electric telescopic rod 308. A pressure frame 2 310 is fixedly mirrored at the bottom of each electric telescopic rod 308.

[0032] Transmission mechanism 4 is installed on workbench 1. Transmission mechanism 4 includes two connecting frames 405. Each of the two connecting frames 405 has a slide groove 406 on its opposite side. A spring 407 is fixed to the inner wall of the slide groove 406. A slider 408 is sleeved inside the slide groove 406. One end of the spring 407 is fixedly connected to the slider 408. A rotating shaft 409 is rotatably connected to each of the two sliders 408 on its opposite side. A pulley 410 is fixed to the outside of the rotating shaft 409.

[0033] The hammering mechanism 5 is installed on the top of the polygonal plate 306. The hammering mechanism 5 includes multiple triangular wheels 503. A frame 504 is provided below the triangular wheels 503. A connecting column 505 is fixed at the bottom of the frame 504. A conical striking block 506 is fixed at the bottom end of the connecting column 505.

[0034] Drive mechanism 6 is mounted on one side of transmission mechanism 4;

[0035] The workbench 1 includes two bases 11. The top of the base 11 is provided with a table surface 13. The bottom of the table surface 13 is provided with two arc-shaped sliding grooves. The inside of the arc-shaped sliding grooves is fitted with sliding columns. The bottom ends of the two sliding columns are fixedly connected to the base 11 respectively. Two connecting plates 12 are fixed between the two bases 11.

[0036] The swing mechanism also includes a support plate fixed to the inner wall of one of the bases 11. A motor is fixed to the top of the support plate, and a gear is fixed to the output shaft end of the motor. One side of the gear meshes with an arc-shaped rack, and the top of the arc-shaped rack is fixedly connected to the bottom of the table 13. The swing mechanism 2 swings back and forth to throw out the casting sand that has fallen out of the casting, thereby increasing the speed of casting sand discharge and eliminating the need for slow discharge through vibration.

[0037] The protective mechanism 3 also includes two support plates 301 fixed to the top of the platform 13. A base plate 302 is fixed to one side of each support plate 301, and the two base plates 302 are located at the bottom of the polygonal plate 306. A sliding groove 303 is provided through each support plate 301. A rotating shaft 304 is fixed to one side of each polygonal plate 306, away from each other. The rotating shaft 304 is fitted inside the sliding groove 303. A limiting plate 305 is fixed to one end of the rotating shaft 304, and the limiting plate 305 is close to the support plate. Multiple ball bearings are installed on one side of the support plate 301. The ball bearings are used to reduce the friction between the limiting plate 305 and the support plate 301. Multiple rotating shafts are rotatably connected to the inner wall of the slide groove 303. The rotating shafts can reduce the friction between the rotating shaft 304 and the slide groove 303. Anti-slip textures are opened on the opposite side of the pressure frame 309 and the pressure frame 310. The protection mechanism 3 protects the casting, achieving the effect of vibration stripping while avoiding deformation caused by directly applying force to the casting.

[0038] The transmission mechanism 4 also includes a support plate 401 fixed to the top of the table 13. The support plate 401 is rotatably connected to a shaft 402. Two pulleys 404 are fixed to the outside of the shaft 402. A pulley 411 is fixed to the outside of the shaft 402. The pulleys 411, 404, and 410 are connected to the same belt 412. Two connecting frames 405 are fixedly connected to the support plate 301. A one-way gear 403 is installed on the outside of one end of the shaft 402. The transmission mechanism causes the protection mechanism to rotate, which can hammer the protection mechanism at different angles. The protection mechanism transmits the vibration force to the casting, which can cause the casting sand to fall off at different positions of the casting. Because the hammering is from top to bottom, the vibration direction is up and down. Therefore, the vibration transmitted to the casting is also up and down. If the casting is rotated so that different positions of the casting are all in the up and down direction, then the casting can be vibrated in multiple directions by the up and down force, which makes it easier for the casting sand to fall off.

[0039] The hammering mechanism 5 also includes a rotating shaft 501 rotatably connected to two support plates 401. Multiple triangular wheels 503 are fixed to the outside of the rotating shaft 501. Multiple ball bearings are installed on the arc-shaped surface of the triangular wheels 503. A slider 509 is fixed to one side of the frame 504. A slide rail 508 is sleeved on the outside of the slider 509. A spring 510 is fixed to the inner wall of the slide rail 508. The top of the spring 510 is fixedly connected to the slider 509. Support plates 507 are fixed to opposite sides of the two support plates 401. The two support plates 507 are fixedly connected to the slide rail 508 respectively. A one-way gear 502 is fixed to the outside of one end of the rotating shaft 501. An electric telescopic rod 308 is connected to an external air source. The one-way gear 1 and the one-way gear 2 drive the rotating shaft to rotate in opposite directions. The hammering mechanism continuously hammers by installing triangular wheels at different angles to remove the material inside the casting.

[0040] The drive mechanism 6 includes a motor 61 fixed to one side of one of the support plates 401. A gear 62 is fixedly connected to the output shaft end of the motor 61. The top of the gear 62 meshes with a one-way gear 502, and the bottom of the gear 62 meshes with a one-way gear 403. The drive mechanism drives the swing mechanism to operate.

[0041] Working principle:

[0042] The casting is placed between pressure frame 309 and pressure frame 310. The electric telescopic rod 308 is activated, causing pressure frame 309 to move downwards, securing the casting between pressure frame 309 and pressure frame 310. The electric telescopic rod 308 is then closed, and motor 61 is activated. Motor 61 rotates forward, driving one-way gear 502 and one-way gear 403 to rotate simultaneously. Since one-way gear 403 and one-way gear 502 drive the shaft to rotate in opposite directions, although motor 61's forward rotation will simultaneously drive one-way gear 502 and one-way gear 403, only one-way gear 502 will drive shaft 501 to rotate. Shaft 501's rotation drives two triangular wheels 503, which in turn rotate the frame 504 and move the slider 50. 9. The connecting column 505 and the conical striking block 506 move downwards, and at the same time, the slider 2 509 compresses the spring 2 510 during its downward movement. The conical striking block 506 contacts and presses down on the top of the polygonal plate 306. The polygonal plate 306 drives the rotating shaft 2 304, the pulley 3 411, and the limiting plate 305 to move downwards, so that the polygonal plate 306 contacts the base plate 302. During the downward movement of the rotating shaft 2 304 and the pulley 3 411, the belt 412 is pulled. The belt 412 pulls the pulley 1 410, the rotating shaft 1 409, and the slider 1 408, so that the slider 1 408 moves in the groove 1 406 and squeezes the spring 1 407. The purpose of the pulley 1 410 moving is to prevent the pulley 3 411 from pulling the belt 412 and causing damage to the belt 412. The impact occurs when the bottom of the polygonal plate 306 strikes the base plate 302, and the bottom of the conical striking block 506 also strikes the polygonal plate 306, causing the polygonal plate 306 to vibrate up and down. This vibration is transmitted to the casting, causing the casting sand inside and on the surface of the casting to detach from the casting. Because the two triangular wheels 503 are installed in different positions, they strike the two polygonal plates 306 sequentially during rotation, achieving vibration transmission on both sides. After striking for a certain period of time, the motor 2 61 is started to reverse, causing the motor 2 61 to drive the gear 2 62 to reverse, which in turn drives the one-way gear 1 403 and the shaft 402 to rotate. Meanwhile, the one-way gear 2 502 stops driving the shaft 501 to rotate, and the shaft 402 rotates. The motor drives the rotating shaft 304, polygonal plate 306, connecting rod 307, electric telescopic rod 308, pressure frame 309, pressure frame 310, and casting to rotate a certain angle via belt 412, pulley 410, pulley 404, and pulley 411. Then, motor 61 continues to rotate forward to hammer the polygonal plate 306 at this angle. The above steps are repeated to rotate and hammer, so as to realize the force transmission at different angles, avoid the residue of casting sand inside the casting, and make the casting sand on the casting quickly detach. Through force transmission, the deformation caused by directly hammering the casting is avoided. At the same time, motor 1 drives gear 1 to rotate forward and reverse. The forward and reverse rotation of gear 1 causes the table 13 to swing through the arc rack. The rapid swing is conducive to the casting sand inside the casting being thrown out.

[0043] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A sand-removing device for casting automotive parts, comprising a worktable (1), characterized in that: A swing mechanism is mounted on a workbench (1) and includes an arc-shaped rack. The protective mechanism (3) is installed on the workbench (1). The protective mechanism (3) includes two polygonal plates (306). A connecting rod (307) is fixedly connected to one side of each polygonal plate (306). An electric telescopic rod (308) is fixedly connected to one end of each connecting rod (307). A pressure frame (309) is fixedly mirror-fixed to the top of each electric telescopic rod (308). A pressure frame (310) is fixedly mirror-fixed to the bottom of each electric telescopic rod (308). The protective mechanism (3) also includes... Includes two support plates (301) fixed to the top of the tabletop (13), and a base plate (302) fixed to one side of each of the two support plates (301). The two base plates (302) are located at the bottom of the polygonal plate (306). A sliding groove (303) is provided through each of the support plates (301). A rotating shaft (304) is fixed to one side of each of the two polygonal plates (306) away from each other. The rotating shaft (304) is sleeved inside the sliding groove (303). A limit plate (305) is fixed to one end of the rotating shaft (304). A transmission mechanism (4) is mounted on a workbench (1). The transmission mechanism (4) includes two connecting frames (405). Each of the two connecting frames (405) has a sliding groove (406) on one side opposite to the other. A spring (407) is fixed to the inner wall of the sliding groove (406). A slider (408) is fitted inside the sliding groove (406). One end of the spring (407) is fixedly connected to the slider (408). A rotating shaft (409) is rotatably connected to one side opposite to the two sliders (408). A pulley (410) is fixed to the outside of the rotating shaft (409). The transmission mechanism (405) includes two connecting frames (405). Each of the two connecting frames (405) has a sliding groove (406) on one side opposite to the other. The mechanism (4) also includes a support plate two (401) fixed to the top of the table (13). The support plate two (401) is rotatably connected to a shaft four (402). Two pulleys two (404) are fixed to the outside of the shaft four (402). A pulley three (411) is fixed to the outside of the shaft two (304). The pulley three (411), pulley two (404) and pulley one (410) are connected to the same belt (412). The two connecting frames (405) are fixedly connected to the support plate one (301) respectively. A one-way gear one (403) is installed on the outside of one end of the shaft four (402). A hammering mechanism (5) is installed on the top of a polygonal plate (306). The hammering mechanism (5) includes multiple triangular wheels (503). A frame (504) is provided below the triangular wheels (503). A connecting column (505) is fixed at the bottom of the frame (504). A conical striking block (506) is fixed at the bottom end of the connecting column (505). A drive mechanism (6) is mounted on one side of the transmission mechanism (4).

2. The sand-removing device for casting automotive parts according to claim 1, characterized in that, The workbench (1) includes two bases (11), the top of the base (11) is provided with a table surface (13), the bottom of the table surface (13) is provided with two arc-shaped sliding grooves, the inside of the arc-shaped sliding grooves is provided with sliding columns, the bottom ends of the two sliding columns are respectively fixedly connected to the base (11), and two connecting plates (12) are fixed between the two bases (11).

3. The sand-removing device for casting automotive parts according to claim 2, characterized in that, The swing mechanism also includes a support plate fixed to the inner wall of one of the bases (11). A motor is fixed to the top of the support plate, and a gear is fixed to the output shaft end of the motor. One side of the gear meshes with an arc-shaped rack, and the top of the arc-shaped rack is fixedly connected to the bottom of the table (13).

4. The sand-removing device for casting automotive parts according to claim 2, characterized in that, The limiting plate (305) is equipped with multiple ball bearings on the side near the support plate (301), and the inner wall of the slide groove (303) is rotatably connected with multiple rotating shafts. The pressure frame (309) and the pressure frame (310) are both provided with anti-slip textures on the opposite side.

5. A sand-removing device for casting automotive parts according to claim 1, characterized in that, The hammering mechanism (5) also includes a rotating shaft five (501) rotatably connected to two support plates two (401). Multiple triangular wheels (503) are fixed outside the rotating shaft five (501). Multiple ball bearings two are installed on the arc surface of the triangular wheels (503). A slider two (509) is fixed on one side of the frame (504). A slide rail frame (508) is sleeved on the outside of the slider two (509). A spring two (510) is fixed on the inner wall of the slide rail frame (508). The top of the spring two (510) is fixedly connected to the slider two (509). Support plates three (507) are fixed on opposite sides of the two support plates two (401). The two support plates three (507) are fixedly connected to the slide rail frame (508) respectively. A one-way gear two (502) is fixed outside one end of the rotating shaft five (501). The electric telescopic rod (308) is connected to an external air source.

6. A sand-removing device for casting automotive parts according to claim 5, characterized in that, The drive mechanism (6) includes a motor (61) fixed on one side of one of the support plates (401). The output shaft of the motor (61) is fixedly connected to a gear (62). The top of the gear (62) meshes with a one-way gear (502), and the bottom of the gear (62) meshes with a one-way gear (403).

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