A sand-removing device for sand casting of automobile cylinder heads and its operating method

Abstract

This invention discloses a sand-cleaning device and its operating method for automobile cylinder head sand casting, relating to the field of automobile cylinder head production technology. It includes two sand-cleaning bodies, each equipped with: a transmission component for moving the automobile cylinder head; a linkage component for rotating the automobile cylinder head while it is moving; a limiting component for limiting the rotation of the automobile cylinder head; a guiding component for guiding the moving automobile cylinder head; and a buffer component for buffering the rotation of the automobile cylinder head. This invention further solves the problem that traditional sand-cleaning devices for automobile cylinder head sand casting often leave residual sand in the cylinder head cavity after casting, making it difficult for traditional water washing and air suction devices to effectively clean the cylinder head cavity. This is achieved by setting a buffer rod on the inner wall of the limiting groove and a fixing block on the outer wall of the buffer rod, allowing the gear plate to continuously rotate the automobile cylinder head via a clamping plate.

Description

Technical Field

[0001] This invention relates to the field of automobile cylinder head manufacturing technology, specifically to a sand cleaning device for automobile cylinder head sand casting and its operating method. Background Technology

[0002] Sand casting technology for automotive cylinder heads can efficiently manufacture cylinder heads with complex internal cavity structures. It is especially suitable for components such as engine cylinder heads that need to take into account heat dissipation, oil passages, and valve structures. It supports a variety of alloy materials such as cast iron and aluminum alloys to meet the performance requirements of different cylinder heads. The raw material is mainly silica sand, supplemented by clay or resin binders. The process has low cost and can reuse waste materials, making it suitable for mass production.

[0003] The existing technology has the following problems:

[0004] 1. During the use of existing sand cleaning devices for automobile cylinder head sand casting, some sand and gravel remain in the inner cavity of the cast automobile cylinder head after sand casting. Traditional water washing and air suction devices are difficult to effectively clean the inner cavity of automobile cylinder head.

[0005] 2. Existing sand cleaning devices for automobile cylinder head sand casting have the problem of needing to periodically remove sand and gravel from the device due to the large amount of impurities in the sand-cast automobile cylinder heads, making it difficult to clean automobile cylinder heads in batches continuously. Summary of the Invention

[0006] This invention provides a sand-cleaning device and its operation method for sand casting of automobile cylinder heads, in order to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a sand cleaning device for sand casting of automobile cylinder heads, comprising two sand cleaning bodies, each of which is equipped with: a transmission component for driving the automobile cylinder head to move; a linkage component for rotating the automobile cylinder head while it is moving; a limiting component for limiting the automobile cylinder head during rotation; a guiding component for guiding the automobile cylinder head during movement; a buffering component for buffering the automobile cylinder head during rotation; and a clamping component for fixing the automobile cylinder head. Between the two sand cleaning bodies are: a collection component for collecting the cleaned sand and gravel; and a cleaning component for cleaning the sand and gravel adhering to the surface of the automobile cylinder head.

[0008] A further improvement of the technical solution of the present invention is that: the transmission component includes a motor fixedly connected to the bottom of one side of the outer wall of the sand cleaning body, and the output end of the motor is fixedly connected to a transmission shaft, and the outer wall of the transmission shaft is connected to a synchronous belt, the two ends of the synchronous belt are connected to linkage shafts, and the outer walls of the two linkage shafts are connected to a transmission chain, and the outer wall of the transmission chain is fixedly connected to a plurality of push blocks, and the end of the push block away from the transmission chain is engaged with a linkage rod.

[0009] A further improvement of the technical solution of the present invention is that: the linkage component includes a first guide rail fixedly connected to the middle of one side of the outer wall of the sand cleaning body, and a toothed plate fixedly connected to the outer wall of the first guide rail. A toothed disc meshes with the toothed plate, and the middle of the inner cavity of the toothed disc is rotatably connected to the outer wall of the linkage rod. A semi-circular block is fixedly connected to the middle of the outer wall of the linkage rod, and the semi-circular block is fitted with the push block. A support plate is fixedly connected to the side of the toothed disc away from the sand cleaning body, and two symmetrically arranged limiting grooves are opened vertically on one side of the outer wall of the support plate. A buffer rod is fixedly connected to the inner wall of the limiting groove. A fixing block is slidably connected to the outer wall of the buffer rod, and one side of the outer wall of each of the two fixing blocks is fixedly connected to a moving plate. At least one set of clamping plates is rotatably connected to the outer wall of the moving plate, and each set of clamping plates includes two clamping plates arranged vertically and vertically.

[0010] A further improvement of the technical solution of the present invention is that: the limiting component includes an extension groove opened in the middle of one side of the outer wall of the moving plate, the end of the linkage rod away from the push block passes through the middle of the gear plate and the extension groove in sequence, and the inner wall of the extension groove is slidably connected to the outer wall of the linkage rod.

[0011] A further improvement of the technical solution of the present invention is that: the guiding component includes two second guiding rails fixedly connected to the inner wall of the sand cleaning body, the two second guiding rails are spaced apart, the middle part of the linkage rod is set in the gap between the two second guiding rails, the linkage rod can slide along the setting direction of the gap, and the semi-circular block is located between the second guiding rail and the pushing block.

[0012] A further improvement of the technical solution of the present invention is that: the buffer assembly includes a connecting plate fixedly connected to the toothed disc on the side away from the support plate, and an elastic bracket is fixedly connected to the middle of the connecting plate. The elastic bracket is disposed between the connecting plate and the second guide rail, and the output end of the elastic bracket is fixedly connected to the outer wall of the linkage rod.

[0013] A further improvement of the technical solution of the present invention is that: the clamping assembly includes connecting rods in a number and position corresponding to the clamping plate, one end of the connecting rod is rotatably connected to the middle of the outer wall of the corresponding clamping plate, and the other end of all the connecting rods is rotatably connected to the linkage plate, and a limit box is slidably connected to the linkage plate, and a slider is slidably connected to the inner wall of the limit box, and the end of the linkage rod away from the push block passes through the middle of the toothed disc and the extension groove in sequence and is fixedly connected to the slider.

[0014] A further improvement of the technical solution of the present invention is that: the storage component includes a storage compartment fixedly connected between two sand-cleaning bodies, and a storage box is slidably connected to the inner wall of the storage compartment; a placement platform is fixedly connected to both ends of the top of the storage compartment, and the two sides of the outer wall of the placement platform are fixedly connected to the middle part of the outer wall of the sand-cleaning body.

[0015] A further improvement of the technical solution of the present invention is that: the cleaning component includes a fan fixedly connected to one side of the outer wall of one of the sand cleaning bodies, and a ventilation pipe is fixedly connected to the output end of the fan. One end of the ventilation pipe is fixedly connected to an exhaust frame, and the two sides of the outer wall of the exhaust frame are respectively fixedly connected to the top of the side of the two sand cleaning bodies away from the motor.

[0016] A method for cleaning sand in sand casting of automotive cylinder heads, the method employing the aforementioned sand cleaning device for automotive cylinder head sand casting, as follows:

[0017] S1: By placing the car cylinder head on the placement platform, starting the motor, and moving the moving plate to the placement platform using the linkage rod, the car cylinder head is fixed by the clamping plate.

[0018] S2: During the movement, the linkage mechanism is used to perform deep cleaning of the car cylinder head: The linkage mechanism sets a fixed block on the outer wall of the buffer rod. When the gear plate drives the moving plate to rotate, the fixed block moves continuously in the limit groove with the buffer rod as the support point. The vibration generated by the fixed block falling and hitting the limit groove is used to clean the sand and gravel remaining in the car cylinder head.

[0019] Due to the adoption of the above technical solution, the technical progress achieved by this invention compared to the prior art is as follows:

[0020] 1. This invention provides a sand-cleaning device and its operating method for sand casting of automobile cylinder heads. A buffer rod is installed on the inner wall of a limiting groove, and a fixing block is installed on the outer wall of the buffer rod. A movable plate is installed on one side of the outer wall using the fixing block for support. When clamping plates are installed at the upper and lower ends of the outer wall of the movable plate to clamp the automobile cylinder head placed on the platform, the gear disc moves under the push of the linkage rod, causing the gear disc to drive the automobile cylinder head to rotate continuously through the clamping plates, thus throwing out the residual sand and gravel inside the automobile cylinder head. This further solves the problem that traditional sand-cleaning devices for automobile cylinder head sand casting often leave some sand and gravel inside the cast automobile cylinder head after sand casting, making it difficult for traditional water washing and air suction devices to effectively clean the inside of the automobile cylinder head.

[0021] 2. This invention provides a sand-cleaning device and its operating method for sand casting of automobile cylinder heads. By providing an extension groove in the middle of one side of the outer wall of the moving plate, and the length of the extension groove being greater than that of the limiting groove, when the fixed block moves up and down on the surface of the buffer rod, the slider at one end of the linkage rod moves within the limiting box, causing the linkage plate to drive the automobile cylinder head to rotate without affecting the gear plate and the linkage rod. This further solves the problem that in the process of using traditional sand-cleaning devices for sand casting of automobile cylinder heads, due to the large amount of impurities in the sand-cast automobile cylinder heads, it is necessary to periodically remove the sand and gravel from the device, making it difficult to clean the automobile cylinder heads in batches continuously. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the top surface structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the first guide track structure of the present invention;

[0025] Figure 4 This is a front sectional view of the present invention;

[0026] Figure 5 This is a schematic diagram of the second guide track structure of the present invention;

[0027] Figure 6 This is a schematic diagram of the support plate structure of the present invention;

[0028] Figure 7 This is a schematic diagram of the linkage structure of the present invention;

[0029] Figure 8 This is a side sectional view of the present invention;

[0030] Figure 9 This is a schematic diagram of the movable plate structure of the present invention;

[0031] Figure 10 This is a horizontal sectional view of the toothed disc of the present invention;

[0032] Figure 11 For the present invention Figure 8 Enlarged diagram of point A in the middle.

[0033] In the diagram: 1. Sand cleaning body; 2. Motor; 3. Drive shaft; 4. Synchronous belt; 5. Linkage shaft; 6. Drive chain; 7. Push block; 8. Linkage rod; 9. First guide rail; 10. Toothed plate; 11. Toothed disc; 12. Semi-circular block; 13. Support plate; 14. Limiting groove; 15. Buffer rod; 16. Fixing block; 17. Moving plate; 18. Clamping plate; 19. Extension groove; 20. Second guide rail; 21. Connecting plate; 22. Elastic bracket; 23. Connecting rod; 24. Linkage plate; 25. Limiting box; 26. Slider; 27. Storage compartment; 28. Storage box; 29. ​​Placement platform; 30. Fan; 31. Ventilation pipe; 32. Exhaust frame. Detailed Implementation

[0034] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0035] like Figures 1 to 11As shown in the embodiment of the present invention, a sand-removing device for automobile cylinder head sand casting includes two sand-removing bodies 1. Each sand-removing body 1 is equipped with: a transmission component for driving the automobile cylinder head to move; a linkage component for rotating the automobile cylinder head while it is moving; a limiting component for limiting the automobile cylinder head during rotation; a guiding component for guiding the automobile cylinder head during movement; a buffering component for buffering the automobile cylinder head during rotation; and a clamping component for fixing the automobile cylinder head. Between the two sand-removing bodies 1, there is a collection component for collecting the cleaned sand and gravel; and a cleaning component for cleaning the sand and gravel adhering to the surface of the automobile cylinder head. The transmission assembly includes a motor 2 fixedly connected to the bottom of one side of the outer wall of the sand-cleaning body 1, and a transmission shaft 3 fixedly connected to the output end of the motor 2. A synchronous belt 4 is driven to the outer wall of the transmission shaft 3. Both ends of the synchronous belt 4 are driven to the linkage shafts 5. The outer walls of the two linkage shafts 5 are driven to the transmission chain 6. Several pushing blocks 7 are fixedly connected to the outer wall of the transmission chain 6. A linkage rod 8 is engaged at the end of the pushing block 7 away from the transmission chain 6. The linkage assembly includes a first guide rail 9 fixedly connected to the middle of one side of the outer wall of the sand-cleaning body 1. A toothed plate 10 is fixedly connected to the outer wall of the first guide rail 9. A toothed disc 11 meshes on the toothed plate 10. The inner cavity of the toothed disc 11 is... The middle part of the linkage rod 8 is rotatably connected to the outer wall of the linkage rod 8. A semi-circular block 12 is fixedly connected to the middle part of the outer wall of the linkage rod 8, and the semi-circular block 12 is fitted with the push block 7. A support plate 13 is fixedly connected to the side of the toothed disc 11 away from the sand cleaning body 1. Two symmetrically arranged limiting grooves 14 are opened vertically on one side of the outer wall of the support plate 13. A buffer rod 15 is fixedly connected to the inner wall of the limiting groove 14. A fixing block 16 is slidably connected to the outer wall of the buffer rod 15. One side of the outer wall of the two fixing blocks 16 is fixedly connected to the moving plate 17. At least one set of clamping plates 18 is rotatably connected to the outer wall of the moving plate 17, and each set of clamping plates 18 includes two clamping plates 18 arranged vertically and vertically.

[0036] During operation, the cylinder head is placed on the surface of the placement platform 29, and the motor 2 located at the bottom of one side of the outer wall of the sand-cleaning body 1 is started. The motor 2 drives the transmission shaft 3 located at the output end, and the transmission shaft 3 drives the synchronous belt 4 located on the outer wall (the synchronous belt 4 is a combination of a synchronous pulley and a synchronous belt). The synchronous belt 4 drives the linkage shafts 5 located at both ends to rotate, thereby causing the linkage shafts 5 to drive the transmission chain 6 to rotate. A pusher block 7 is located on the outer wall of the transmission chain 6, and the inner wall of the pusher block 7 pushes the linkage rod 8 to move. A gear plate 11 is located at one end of the outer wall of the linkage rod 8. When the linkage rod 8 drives the gear plate 11 to move, a first guide rail is located in the middle of one side of the outer wall of the sand-cleaning body 1. The gear 11 is limited by the first guide rail 9. A toothed plate 10 is installed at the top of the first guide rail 9, so that when the linkage rod 8 moves the gear 11, the toothed plate 10 drives the gear 11 to rotate. A semi-circular block 12 is installed in the middle of the outer wall of the linkage rod 8. On the one hand, the semi-circular block 12 limits the linkage rod 8; on the other hand, because the contact surface of the semi-circular block 12 is arc-shaped, it effectively reduces the friction affecting the linkage rod 8 during movement, thus reducing resistance and causing the gear 11 to deviate on the surface of the toothed plate 10. This results in wear on the tooth marks between the toothed plate 10 and the gear 11. A support plate 13 is installed on one side of the outer wall of the gear 11. Limiting grooves 14 are provided at both ends of one side of the outer wall of the support plate 13. A buffer rod 15 is provided on the inner wall of the limiting groove 14, and a fixing block 16 is provided on the outer wall of the buffer rod 15. A moving plate 17 is provided on one side of the outer wall using the fixing block 16 for support. When clamping plates 18 are provided at the upper and lower ends of the outer wall of the moving plate 17 to clamp the car cylinder head placed on the surface of the placement platform 29, the gear disc 11 moves under the push of the linkage rod 8, thereby causing the gear disc 11 to drive the car cylinder head to rotate continuously through the clamping plate 18, throwing out the sand and gravel remaining in the car cylinder head. When the car cylinder head rotates, the weight of the car cylinder head causes the fixing block 16 to move downward on the outer wall of the buffer rod 15. When the gear disc 11 When the cylinder head is rotated 180 degrees, the fixing block 16 in the limiting groove 14 is at the top of the buffer rod 15 and is again affected by the weight of the cylinder head, moving downwards again. The impact force generated by the falling of the fixing block 16 and its collision with the inner wall of the limiting groove 14 causes the cylinder head in the clamped state to vibrate, thereby causing the sand and gravel attached to the dead corners of the cylinder head to fall off from the cylinder head under the influence of vibration. This further solves the problem that in the process of using traditional sand cleaning devices for sand casting of automobile cylinder heads, some sand and gravel remain in the inner cavity of the cast automobile cylinder head after sand casting, making it difficult for traditional water washing and air suction devices to effectively clean the inner cavity of the automobile cylinder head.

[0037] The limiting component includes an extension groove 19 formed in the middle of one side of the outer wall of the movable plate 17. The end of the linkage rod 8 away from the push block 7 passes through the middle of the gear plate 11 and the extension groove 19 in sequence, and the inner wall of the extension groove 19 is slidably connected to the outer wall of the linkage rod 8. The guiding component includes two second guide rails 20 fixedly connected to the inner wall of the sand cleaning body 1. The two second guide rails 20 are spaced apart. The middle part of the linkage rod 8 is set in the gap between the two second guide rails 20. The linkage rod 8 can slide along the direction of the gap. The semi-circular block 12 is located between the second guide rail 20 and the push block 7. The buffer component includes a connecting rod fixedly connected to the gear plate 11 on the side away from the support plate 13. The connecting plate 21 is fixedly connected to the middle of the connecting plate 21, and the elastic bracket 22 is disposed between the connecting plate 21 and the second guide rail 20. The output end of the elastic bracket 22 is fixedly connected to the outer wall of the linkage rod 8. The clamping assembly includes connecting rods 23 corresponding to the number and position of the clamping plate 18. One end of the connecting rod 23 is rotatably connected to the middle of the outer wall of the corresponding clamping plate 18, and the other end of all connecting rods 23 is rotatably connected to the linkage plate 24. A limit box 25 is slidably connected on the linkage plate 24. A slider 26 is slidably connected to the inner wall of the limit box 25. The end of the linkage rod 8 away from the push block 7 passes through the middle of the toothed disc 11 and the extension groove 19 in sequence and is fixedly connected to the slider 26.

[0038] During operation, a connecting plate 21 is installed on the side of the outer wall of the gear disc 11 away from the support plate 13, and an elastic bracket 22 is installed on one side of the outer wall of the connecting plate 21. The output end of the elastic bracket 22 is connected to the linkage rod 8. A second guide rail 20 is installed at the top of the inner wall of the sand cleaning body 1. Since the left and right ends of the second guide rail 20 are curved, when the linkage rod 8 passes through the left and right ends of the second guide rail 20, the linkage rod 8 loses the restriction of the second guide rail 20. With the rebound force of the elastic bracket 22, the linkage rod 8 is pulled towards the gear disc 11 without disengaging from the push block 7. The linkage rod 8 pushes the slider 26 at one end, and the slider 26 pushes the linkage plate 24 to one side through the limit box 25. Several connecting rods 23 on the outer wall of the linkage plate 24 push the clamping plate 18, causing the clamping plate 18 to open. When the linkage rod 8 passes through the upper and lower ends of the second guide rail 20, the semi-circular blocking block 1 on the outer wall of the linkage rod 8 is used. 2. Push the linkage rod 8 to reset. At this time, the linkage rod 8, through the slider 26, causes the linkage plate 24 to move towards the end closer to the support plate 13. At this time, the linkage plate 24 pulls several connecting rods 23 set on the outer wall, causing the connecting rods 23 to pull the clamping plate 18 to close, and the clamping plate 18 to fix the car cylinder head. When the gear plate 11 drives the car cylinder head to rotate, since the middle of one side of the outer wall of the moving plate 17 is provided with an extension groove 19, and the length of the extension groove 19 is greater than the limit groove 14, when the fixing block 16 moves up and down on the surface of the buffer rod 15, the slider 26 set at one end of the linkage rod 8 moves in the limit box 25, causing the linkage plate 24 to drive the car cylinder head to rotate. This does not affect the gear plate 11 and the linkage rod 8, further solving the problem that in the process of using the traditional sand cleaning device for sand casting of car cylinder heads, due to the large amount of impurities in the sand-cast car cylinder heads, it is necessary to periodically remove the sand and gravel in the device, which makes it difficult to clean the car cylinder heads in batches continuously.

[0039] The storage assembly includes a storage compartment 27 fixedly connected between two sand-cleaning bodies 1, and a storage box 28 slidably connected to the inner wall of the storage compartment 27. Placement platforms 29 are fixedly connected to both ends of the top of the storage compartment 27, and the two sides of the outer wall of the placement platform 29 are fixedly connected to the middle of the outer wall of the sand-cleaning body 1. The cleaning assembly includes a fan 30 fixedly connected to one side of the outer wall of one of the sand-cleaning bodies 1, and a ventilation pipe 31 is fixedly connected to the output end of the fan 30. An exhaust frame 32 is fixedly connected to one end of the ventilation pipe 31, and the two sides of the outer wall of the exhaust frame 32 are respectively fixedly connected to the top of the side of the two sand-cleaning bodies 1 away from the motor 2.

[0040] During operation, a fan 30 is installed on one side of the outer wall of the sand-cleaning main body 1, allowing air to enter the exhaust frame 32 through the ventilation pipe 31 at its output end. When the clamping plate 18 vibrates and cleans the car cylinder head, the exhaust frame 32 blows air toward the car cylinder head, which not only cleans the sand and gravel on the surface of the car cylinder head, but also forms an air wall in the collection chamber 27 with the airflow blown out by the exhaust frame 32, thereby preventing dust from being generated when the sand and gravel fall off. The collection chamber 27 is set on the side of the outer wall of the sand-cleaning main body 1 away from the motor 2, and a collection box 28 is set on the inner wall of the collection chamber 27 to collect the sand and gravel cleaned off the car cylinder head. The uncleaned car cylinder head is placed on the top of the collection chamber 27 by setting up placement platforms 29 at both ends of the top of the collection chamber 27, so that the clamping plate 18 can clamp the car cylinder head afterward, thereby realizing batch and uninterrupted sand cleaning of car cylinder heads.

[0041] A method for cleaning sand during sand casting of automotive cylinder heads, the method employing the aforementioned sand cleaning device for automotive cylinder head sand casting, as follows:

[0042] S1: By placing the car cylinder head on the surface of the placement platform 29, starting the motor 2, and causing the linkage rod 8 to move the moving plate 17 to the placement platform 29, the clamping plate 18 is used to fix the car cylinder head.

[0043] S2: During the movement, the linkage mechanism is used to perform deep cleaning of the car cylinder head: The linkage mechanism sets a fixed block 16 on the outer wall of the buffer rod 15. When the gear plate 11 drives the moving plate 17 to rotate, the fixed block 16 moves continuously in the limit groove 14 with the buffer rod 15 as the support point. The vibration generated by the fixed block 16 falling and hitting the limit groove 14 is used to clean the sand and gravel remaining in the car cylinder head.

[0044] The working principle of the sand cleaning device for automobile cylinder head sand casting and its operation method will be explained in detail below.

[0045] like Figures 1-11As shown, by placing the car cylinder head on the surface of the placement platform 29, the motor 2 located at the bottom of one side of the outer wall of the sand cleaning body 1 is started. The motor 2 drives the transmission shaft 3 located at the output end, and the transmission shaft 3 drives the synchronous belt 4 located on the outer wall (the synchronous belt 4 is a combination of a synchronous pulley and a synchronous belt). The synchronous belt 4 drives the linkage shaft 5 located at both ends to rotate, thereby causing the linkage shaft 5 to drive the transmission chain 6 to rotate. By setting a push block 7 on the outer wall of the transmission chain 6, the inner wall of the push block 7 pushes the linkage rod 8 to move. By setting a toothed disc 11 at one end of the outer wall of the linkage rod 8, when the linkage rod 8 drives the toothed disc 11 to move... At the same time, a first guide rail 9 is set in the middle of one side of the outer wall of the sand-cleaning body 1 to limit the toothed disc 11. A toothed plate 10 is set on the top of the first guide rail 9 so that when the linkage rod 8 moves the toothed disc 11, the toothed plate 10 drives the toothed disc 11 to rotate. A semi-circular block 12 is set in the middle of the outer wall of the linkage rod 8. On the one hand, the semi-circular block 12 limits the linkage rod 8. On the other hand, since the contact surface of the semi-circular block 12 is arc-shaped, it effectively reduces the friction of the linkage rod 8 during the movement, thus reducing the resistance increase. This allows the toothed disc 11 to rotate on the surface of the toothed plate 10. The surface shifts, causing wear on the tooth marks between the toothed plate 10 and the toothed disc 11. A support plate 13 is provided on one side of the outer wall of the toothed disc 11, and limiting grooves 14 are provided at both ends of one side of the support plate 13. A buffer rod 15 is provided on the inner wall of the limiting groove 14, and a fixing block 16 is provided on the outer wall of the buffer rod 15. A moving plate 17 is provided on one side of the outer wall using the fixing block 16 for support. When clamping plates 18 are provided at the upper and lower ends of the outer wall of the moving plate 17 to clamp the car cylinder head placed on the surface of the placement platform 29, the toothed disc 11 moves under the push of the linkage rod 8, causing the toothed disc 11 to pass through the clamping plates 18. The rotating cylinder head causes the sand and gravel remaining inside to be flung out. As the cylinder head rotates, its weight causes the fixing block 16 to move downwards on the outer wall of the buffer rod 15, vibrating the cylinder head in the clamped state. This vibration causes the sand and gravel adhering to the dead corners of the cylinder head to fall off. This further solves the problem that traditional sand cleaning devices for sand casting of automobile cylinder heads often fail to effectively clean the inner cavity of the cylinder head due to the presence of sand and gravel remaining after casting.

[0046] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A sand-removing device for sand casting of automobile cylinder heads, characterized in that, It includes two sand-cleaning bodies (1), and each sand-cleaning body (1) is equipped with: Transmission components are used to move the cylinder head of a car. Linkage components are used to allow the cylinder head of an automobile to rotate while moving. Limiting components are used to limit the rotation of the cylinder head of an automobile. Guiding components are used to guide the cylinder head of an automobile during movement; A buffer assembly is used to cushion the rotation of a car cylinder head. Clamping assembly for securing automotive cylinder heads; Between the two sand-cleaning bodies (1) is: Storage components are used to collect the sand and gravel that has been cleared out; Cleaning components are used to remove sand and gravel adhering to the surface of automobile cylinder heads; The transmission assembly includes a motor (2) fixedly connected to the bottom of one side of the outer wall of the sand cleaning body (1), and a transmission shaft (3) fixedly connected to the output end of the motor (2). A synchronous belt (4) is connected to the outer wall of the transmission shaft (3). A linkage shaft (5) is connected to both ends of the synchronous belt (4). A transmission chain (6) is connected to the outer walls of the two linkage shafts (5). A plurality of push blocks (7) are fixedly connected to the outer wall of the transmission chain (6). A linkage rod (8) is snapped onto the end of the push block (7) away from the transmission chain (6). The linkage assembly includes a first guide rail (9) fixedly connected to the middle of one side of the outer wall of the sand cleaning body (1), and a toothed plate (10) fixedly connected to the outer wall of the first guide rail (9). A toothed disc (11) meshes on the toothed plate (10), and the middle of the inner cavity of the toothed disc (11) is rotatably connected to the outer wall of the linkage rod (8). A semi-circular block (12) is fixedly connected to the middle of the outer wall of the linkage rod (8), and the semi-circular block (12) is fitted with the push block (7). The side of the toothed disc (11) away from the sand cleaning body (1) is fixed. A support plate (13) is connected, and two symmetrically arranged limiting grooves (14) are opened on one side of the outer wall of the support plate (13) along the vertical direction. A buffer rod (15) is fixedly connected to the inner wall of the limiting groove (14). A fixing block (16) is slidably connected to the outer wall of the buffer rod (15). One side of the outer wall of the two fixing blocks (16) is fixedly connected to the moving plate (17). At least one set of clamping plates (18) is rotatably connected to the outer wall of the moving plate (17). Each set of clamping plates (18) includes two clamping plates (18) arranged vertically and vertically.

2. The sand-removing device for automobile cylinder head sand casting according to claim 1, characterized in that: The limiting component includes an extension groove (19) opened in the middle of one side of the outer wall of the moving plate (17), and the end of the linkage rod (8) away from the push block (7) passes through the middle of the gear plate (11) and the extension groove (19) in sequence, and the inner wall of the extension groove (19) is slidably connected to the outer wall of the linkage rod (8).

3. The sand-removing device for automobile cylinder head sand casting according to claim 2, characterized in that: The guiding component includes two second guiding rails (20) fixedly connected to the inner wall of the sand cleaning body (1). The two second guiding rails (20) are spaced apart. The middle part of the linkage rod (8) is set in the gap between the two second guiding rails (20). The linkage rod (8) can slide along the setting direction of the gap. The semi-circular block (12) is located between the second guiding rail (20) and the push block (7).

4. The sand-removing device for automobile cylinder head sand casting according to claim 3, characterized in that: The buffer assembly includes a connecting plate (21) fixedly connected to the toothed disc (11) on the side away from the support plate (13), and an elastic bracket (22) is fixedly connected to the middle of the connecting plate (21). The elastic bracket (22) is disposed between the connecting plate (21) and the second guide rail (20), and the output end of the elastic bracket (22) is fixedly connected to the outer wall of the linkage rod (8).

5. The sand-removing device for automobile cylinder head sand casting according to claim 4, characterized in that: The clamping assembly includes connecting rods (23) in the same number and position as the clamping plate (18). One end of the connecting rod (23) is rotatably connected to the middle of the outer wall of the corresponding clamping plate (18), and the other end of all the connecting rods (23) is rotatably connected to the linkage plate (24). A limit box (25) is slidably connected on the linkage plate (24). A slider (26) is slidably connected to the inner wall of the limit box (25). The end of the linkage rod (8) away from the push block (7) passes through the middle of the toothed disc (11) and the extension groove (19) in sequence and is fixedly connected to the slider (26).

6. The sand-removing device for automobile cylinder head sand casting according to claim 5, characterized in that: The storage assembly includes a storage compartment (27) fixedly connected between two sand-cleaning bodies (1), and a storage box (28) is slidably connected to the inner wall of the storage compartment (27). Placement platforms (29) are fixedly connected to both ends of the top of the storage compartment (27), and the two sides of the outer wall of the placement platform (29) are fixedly connected to the middle of the outer wall of the sand-cleaning body (1).

7. The sand-removing device for automobile cylinder head sand casting according to claim 6, characterized in that: The cleaning assembly includes a fan (30) fixedly connected to one side of the outer wall of one of the sand cleaning bodies (1), and a ventilation pipe (31) is fixedly connected to the output end of the fan (30). One end of the ventilation pipe (31) is fixedly connected to an exhaust frame (32), and the two sides of the outer wall of the exhaust frame (32) are respectively fixedly connected to the top of the side of the two sand cleaning bodies away from the motor (2).

8. A method for cleaning sand during sand casting of automotive cylinder heads, the method employing the sand cleaning device for automotive cylinder head sand casting as described in claim 7, characterized in that: The method is as follows: S1: By placing the car cylinder head on the surface of the placement platform (29), starting the motor (2), and causing the linkage rod (8) to move the moving plate (17) to the placement platform (29), the car cylinder head is fixed by the clamping plate (18); S2: During the movement, the linkage mechanism is used to deeply clean the cylinder head of the car: The linkage mechanism sets a fixed block (16) on the outer wall of the buffer rod (15). When the gear plate (11) drives the moving plate (17) to rotate, the fixed block (16) moves continuously in the limit groove (14) with the buffer rod (15) as the support point. The vibration generated by the fixed block (16) falling and hitting the limit groove (14) cleans the sand and gravel remaining in the cylinder head of the car.

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