Aluminum product casting sand mold positioning and clamping device

Abstract

The invention provides an aluminum product casting sand mold positioning and clamping device, and relates to the technical field of positioning and clamping, the aluminum product casting sand mold positioning and clamping device comprises a rack, a positioning mechanism is arranged in the rack, the positioning mechanism comprises a fixing frame and a rotating cylinder, the inner surface of the fixing frame is fixedly connected with a fixing block, the outer surface of the rotating cylinder is movably connected with a plurality of rotating blocks, and the rotating blocks are fixedly connected with the fixing frame. And the multiple rotating blocks are rotationally connected through bearings, the rotating block at the bottom is rotationally connected with the fixed block through bearings, and the outer surfaces of the multiple rotating blocks are fixedly connected with mounting plates. The sand box is kept in a horizontal stable state all the time in the machining process, the sand mold manufacturing defect caused by positioning deviation is avoided, meanwhile, the cleaned sand box can be effectively reset, a reliable basis is provided for subsequent sand filling, box closing and other procedures, and the reliability and consistency of the whole positioning and clamping process are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of positioning and clamping, and in particular to a positioning and clamping device for aluminum product casting sand molds. Background Art

[0002] In the foundry industry, sand casting is a widely used molding process. The efficiency and accuracy of its sand mold positioning, clamping, cleaning and other links directly affect the quality of castings and production efficiency. In traditional casting production, sand mold positioning and clamping devices often face many technical bottlenecks. On the one hand, after the sand box is vibrated and cleaned, positioning deviations are prone to occur, resulting in defects in sand mold production, causing problems such as out-of-tolerance casting dimensions and misalignment. On the other hand, the cleaning of the sand mold edge mostly relies on linear motion mechanisms, which have blind spots for cleaning and are not effective in removing stubborn flash and residual molding sand. Manual secondary processing is required, which reduces production efficiency. In addition, the inner wall of the sand box is usually cleaned by high-pressure air blowing or manual knocking. The former is prone to dust pollution and incomplete cleaning, and the latter is labor-intensive and inefficient. It may also damage the sand box due to improper force control, shortening the service life of the equipment. For this reason, we propose a sand mold positioning and clamping device for aluminum casting. Summary of the Invention

[0003] The purpose of the present invention is to solve the above problems and to propose a positioning and clamping device for aluminum product casting sand molds.

[0004] The cam is provided with a plurality of guide wheels, and the guide wheels are connected with each other to form a circle, and the guide wheels are connected with each other to form a circle.

[0005] Preferably, a first limiting ball is fixedly connected to the outer surface of the rotating cylinder, and an inner surface of each of the plurality of rotating blocks is provided with an inclined groove, and the first limiting balls are slidably connected to the inclined groove.

[0006] Preferably, a cleaning mechanism is also provided inside the frame, and the cleaning mechanism includes a mounting frame, the inner surface of the mounting frame is fixedly connected to a horizontal plate, the lower surface of the horizontal plate is fixedly mounted with a first cylinder, the output end of the first cylinder is fixedly connected to a first connecting plate, the lower surface of the first connecting plate is fixedly connected to a second cylinder, the output end of the first cylinder is fixedly connected to a second connecting plate, the lower surface of the second connecting plate is rotatably connected to the rotating cylinder through a bearing, the outer surface of the rotating cylinder is provided with an arc groove, the inner surface of the arc groove is slidably connected with a second limiting ball, a first spring is fixedly connected between the second limiting ball and the arc groove, the inner surfaces of the plurality of rotating blocks are provided with vertical grooves, and the plurality of second limiting balls are slidably connected to the vertical grooves.

[0007] The cam is fixedly provided with a first sliding bar on the lower surface of the connecting rod, and the first sliding bar is slidably connected to the inner surface of the first sliding bar, and the other end of the first sliding bar is fixedly connected to the mounting block, the inner surface of the mounting frame is fixedly connected to the second sliding bar, the outer surface of the second sliding bar is slidably connected to the second sliding bar, and the surface of the second sliding bar is fixedly connected to the third sliding bar, the lower surface of the mounting block is rotatably connected to the third sliding bar through a bearing, the third sliding bar is slidably connected to the third sliding bar, the first sliding bar is fixedly connected to the mounting block with a second spring, the lower surface of the third sliding bar is rotatably connected to the cleaning rod through a bearing, and the lower surface of the cleaning rod is fixedly connected to the cleaning blade.

[0008] Preferably, a rectangular gear ring is fixedly connected to the inner surface of the mounting bracket, and a first gear is fixedly connected to the outer surface of the cleaning rod, and the first gear is meshed with the gear ring.

[0009] Preferably, the lower surface of the first slider is fixedly connected to a rotating rod, the outer surface of the rotating rod is fixedly connected to the second gear, the outer surface of the second gear is meshedly connected to the third gear, the outer surface of the third gear is fixedly connected to a spherical gear ring, the third gear is meshed with the spherical gear ring, the lower surface of the spherical gear ring is fixedly connected to a rotating disk, the lower surface of the rotating disk is fixedly connected to a vertical rod, the outer surface of the vertical rod is slidably connected to an outer cylinder, the outer cylinder is slidably connected to the rotating cylinder, the outer cylinder is rotatably connected to the fixed block via a bearing, and the outer cylinder is fixedly connected to the first connecting plate.

[0010] Preferably, a fixing plate is fixedly connected to the inner surface of the mounting frame, the fixing plate is rotatably connected to the rotating rod and the third gear via bearings, the vertical rod is rotatably connected to the horizontal plate via bearings, and the fixing frame is fixedly connected to the mounting frame.

[0011] Preferably, a motor is fixedly connected to the outer surface of the mounting bracket, an output end of the motor is fixedly connected to a connecting rod, and the connecting rod is rotatably connected to the mounting bracket.

[0012] Preferably, a conveyor belt is installed on the inner surface of the frame, and a clamping seat and a collection box are fixedly connected to the outer surface of the conveyor belt.

[0013] Preferably, the outer surface of the frame is fixedly connected to a limiting frame, the inner surface of the limiting frame is rotatably connected to a rotating frame, and the rotating frame is fixedly connected to the mounting frame.

[0014] Compared with the prior art, the advantages and positive effects of the present invention are

[0015] 1. The present invention proposes a positioning and clamping device for aluminum casting sand molds, in which the first slider is driven by a series of gears, discs and rods, and finally the positioning frame is close to the sand box and simultaneously close to the sand box through the positioning roller to clamp it. This multi-component coordinated transmission method can be adaptively adjusted according to the position of the sand box to ensure that the positioning frame can accurately fit the sand box, so that the sand box always maintains a horizontal and stable state during the processing process, avoiding sand mold production defects caused by positioning deviation, and at the same time can effectively reset the sand box after cleaning, providing a reliable foundation for subsequent sand filling, box closing and other processes, and ensuring the reliability and consistency of the entire positioning and clamping process.

[0016] 2. The present invention proposes a positioning and clamping device for aluminum casting sand molds, which can convert a single rotational power into a composite motion of horizontal and vertical translation and rotation of the cleaning rod through a slider driven by a connecting rod and a slide rod linkage mechanism, so that the cleaning blade forms a spiral trimming trajectory, thereby achieving efficient cleaning of burrs and residual sand on the edge of the sand mold. This innovative structure avoids the blind spot problem of traditional linear cleaning. Through a three-dimensional cleaning path, it ensures that every corner of the sand mold edge can be fully processed, greatly improving the cleaning efficiency and quality. At the same time, the rotation action can crush and peel off the stubbornly attached sand, ensuring that the sand mold edge is flat and smooth, providing high-precision surface conditions for the subsequent box assembly process.

[0017] 3. The present invention proposes a positioning and clamping device for aluminum casting sand molds. When cleaning the inside of the sand box, the interlocking vibration structure driven by the second cylinder is used to achieve efficient removal of attachments on the inner wall of the sand box. When the second cylinder drives the rotating cylinder to move upward, the unique combination of the first limiting ball and the inclined groove is used to make the positioning frame produce regular impact vibrations. The vibration can accurately act on every corner of the inner wall of the sand box. Compared with the traditional cleaning method, the cleaning efficiency is improved, and no additional manual intervention is required, which greatly reduces the labor intensity. After the bottom rotating block rotates, it automatically triggers the next rotating block to form a continuous chain reaction, ensuring that the vibration covers the entire inner wall of the sand box, which not only ensures the cleaning effect, but also avoids damage to the sand box structure due to excessive vibration, extends the service life of the equipment, and enhances the overall production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The present invention provides a schematic diagram of the external structure of a positioning and clamping device for aluminum casting sand molds;

[0019] Figure 2 The present invention provides a schematic diagram of the internal structure of a positioning and clamping device for aluminum casting sand molds;

[0020] Figure 3 The present invention provides a schematic diagram of the internal structure of a positioning and clamping device for aluminum casting sand molds;

[0021] Figure 4 The present invention provides a schematic diagram of the local structure of a connecting rod of a positioning and clamping device for aluminum casting sand molds;

[0022] Figure 5 This is a partial structural diagram of a fixed block of a positioning and clamping device for aluminum casting sand molds proposed by the present invention;

[0023] Figure 6 This is a schematic diagram of a partial top view of the rotating block of a positioning and clamping device for aluminum casting sand molds proposed by the present invention;

[0024] Figure 7 This is a partial structural diagram of the first spring of a positioning and clamping device for aluminum casting sand molds proposed by the present invention;

[0025] Figure 8 The present invention provides a schematic diagram of a partial upward-looking structure of a spherical ball of a positioning and clamping device for aluminum product casting sand molds.

[0026] Legend: 1. Frame; 2. Positioning mechanism; 201. Fixed frame; 202. Rotating cylinder; 203. Fixed block; 204. Rotating block; 205. Mounting plate; 206. Rotating rod; 207. Mounting rod; 208. Positioning frame; 209. Positioning roller; 210. Circular groove; 211. Circular ball; 212. Support frame; 213. Sand box; 3. Cleaning mechanism; 301. Mounting frame; 302. Horizontal plate; 303. First cylinder; 304. First connecting plate; 305. Second cylinder; 306. Second connecting plate; 307. Arc groove; 308. Second limiting ball; 309. First spring; 310. Vertical groove; 4. Trimming mechanism ;401, connecting rod; 402, first slider; 403, first slider; 404, mounting block; 405, second slider; 406, second slider; 407, third slider; 408, third slider; 409, second spring; 410, cleaning rod; 411, cleaning blade; 5, first limiting ball; 6, inclined groove; 7, rectangular gear ring; 8, first gear; 9, rotating rod; 10, second gear; 11, third gear; 12, circular gear ring; 13, rotating disk; 14, vertical rod; 15, outer cylinder; 16, fixed plate; 17, motor; 18, conveyor belt; 19, clamping seat; 20, collecting box; 21, limiting frame; 22, rotating frame. DETAILED DESCRIPTION

[0027] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] like Figures 1-8As shown, a positioning and clamping device for aluminum casting sand molds includes a frame 1, a positioning mechanism 2 is provided inside the frame 1, the positioning mechanism 2 includes a fixed frame 201 and a rotating cylinder 202, the inner surface of the fixed frame 201 is fixedly connected to a fixed block 203, the outer surface of the rotating cylinder 202 is movably connected to a plurality of rotating blocks 204, the plurality of rotating blocks 204 are rotatably connected to each other through bearings, the bottom rotating block 204 is rotatably connected to the fixed block 203 through bearings, the outer surfaces of the plurality of rotating blocks 204 are fixedly connected to mounting plates 205, the outer surfaces of the plurality of mounting plates 205 The surfaces are all rotatably connected to rotating rods 206 through bearings, and the other ends of multiple rotating rods 206 are rotatably connected to mounting rods 207 through bearings. The lower surfaces of multiple mounting rods 207 are fixedly connected to positioning frames 208, and the inner surfaces of multiple positioning frames 208 are rotatably connected to multiple positioning rollers 209 through bearings. A circular groove 210 is provided on the lower surface of the fixed block 203, and the inner surface of the circular groove 210 is rotatably connected to a ball 211. The lower surface of the ball 211 is fixedly connected to a support frame 212, and the lower surface of the support frame 212 is fixedly connected to a sand box 213.

[0030] The effect is that the rotating cylinder 202 can drive the first limiting ball 5 and the second limiting ball 308 on the surface to rotate, and the limiting of the inclined groove 6 and the straight groove can drive the external rotating block 204 to rotate synchronously. At this time, multiple rotating blocks 204 simultaneously drive the mounting plate 205 to move, and drive one end of the rotating rod 206 to move, so that the other end of the rotating rod 206 can pull the mounting rod 207 to move. A limiting track is set on the mounting frame 301, and the mounting rod 207 always slides horizontally inside the limiting track. At this time, the positioning frame 208 at the bottom of the mounting rod 207 can be close to the sand box 213 and clamp it to position it so that it can remain horizontal.

[0031] like Figures 1-8As shown, the outer surface of the rotating cylinder 202 is fixedly connected to the first limiting ball 5, the inner surfaces of the multiple rotating blocks 204 are each provided with an inclined groove 6, and the first limiting balls 5 are all slidably connected to the inclined groove 6. A cleaning mechanism 3 is also provided inside the frame 1, and the cleaning mechanism 3 includes a mounting frame 301, the inner surface of the mounting frame 301 is fixedly connected to a horizontal plate 302, the lower surface of the horizontal plate 302 is fixedly mounted with a first cylinder 303, the output end of the first cylinder 303 is fixedly connected to a first connecting plate 304, and the lower surface of the first connecting plate 304 is fixedly connected to a second Cylinder 305, the output end of the first cylinder 303 is fixedly connected to the second connecting plate 306, the lower surface of the second connecting plate 306 is rotatably connected to the rotating cylinder 202 through a bearing, the outer surface of the rotating cylinder 202 is provided with an arc groove 307, the inner surface of the arc groove 307 is slidably connected to the second limiting ball 308, and a first spring 309 is fixedly connected between the second limiting ball 308 and the arc groove 307, and the inner surfaces of the multiple rotating blocks 204 are provided with vertical grooves 310, and the multiple second limiting balls 308 are slidably connected to the vertical grooves 310.

[0032] The effect is that after demolding, the rotating frame 22 continues to rotate, and the clamping seat 19 is flipped over at the same time, the sand box 213 at the bottom is flipped upward, and the same operation is performed on the other side of the mold. After the sand boxes 213 on both sides are demolded, the mold is removed by the conveyor belt 18, and the box can be closed, poured, cooled and sand is dropped. When cleaning the inside of the sand box 213, the collection box 20 is moved to the bottom of the sand box 213 by the conveyor belt 18. At this time, the inner wall of the sand box 213 is adhered to sand, which is not convenient for cleaning. At this time, the second connecting plate 306 is driven upward by the second cylinder 305, and the second connecting plate 306 drives the rotating frame 213 to rotate. The movable cylinder 202 moves upward, and the first limiting ball 5 inside the rotating cylinder 202 can slide inside the inclined groove 6. At this time, the rotating block 204 can be rotated. After the bottom rotating block 204 rotates, the inclined groove 6 will be connected to the bottom of the inclined groove 6 of the next rotating block 204, so that the rotating blocks 204 can be driven to rotate in turn, so that the positioning frame 208 can hit the sand box 213 in turn, generating vibration, which can knock the internal sand off. At the same time, the second limiting ball 308 will move along the arc groove 307 and the vertical groove 310, and can be reset by the first spring 309 later.

[0033] like Figures 1-8As shown, the interior of the frame 1 is also provided with a trimming mechanism 4, which includes a connecting rod 401, a first slider 402 fixedly connected to the lower surface of the connecting rod 401, a first slider 403 slidably connected to the inner surface of the first slider 402, a mounting block 404 fixedly connected to the other end of the first slider 403, a second slider 405 fixedly connected to the inner surface of the mounting frame 301, a second slider 406 slidably connected to the outer surface of the second slider 405, a third slider 407 fixedly connected to the surface of the second slider 406, a third slider 408 rotatably connected to the lower surface of the mounting block 404 through a bearing, The slider 408 is slidably connected to the third slider 407, a second spring 409 is fixedly connected between the first slider 402 and the mounting block 404, the lower surface of the third slider 408 is rotatably connected to the cleaning rod 410 through a bearing, the lower surface of the cleaning rod 410 is fixedly connected to a cleaning blade 411, the inner surface of the mounting frame 301 is fixedly connected to a rectangular gear ring 7, the outer surface of the cleaning rod 410 is fixedly connected to a first gear 8, the first gear 8 is meshed with the gear ring, the lower surface of the first slider 402 is fixedly connected to a rotating rod 9, the outer surface of the rotating rod 9 is fixedly connected to a second gear 10, the second gear 10 The outer surface of the third gear 11 is meshed with the third gear 11, the outer surface of the third gear 11 is fixedly connected to the spherical gear ring 12, the third gear 11 is meshed with the spherical gear ring 12, the lower surface of the spherical gear ring 12 is fixedly connected to the rotating disk 13, the lower surface of the rotating disk 13 is fixedly connected to the vertical rod 14, the outer surface of the vertical rod 14 is slidably connected to the outer cylinder 15, the outer cylinder 15 is slidably connected to the rotating cylinder 202, the outer cylinder 15 is rotatably connected to the fixed block 203 through a bearing, the outer cylinder 15 is fixedly connected to the first connecting plate 304, the inner surface of the mounting frame 301 is fixedly connected to the fixing plate 16, the fixing plate 16 is connected to the rotating rod 9 and the third gear 11 is rotatably connected through a bearing, the vertical rod 14 and the horizontal plate 302 are rotatably connected through a bearing, the fixed frame 201 is fixedly connected to the mounting frame 301, the outer surface of the mounting frame 301 is fixedly connected to the motor 17, the output end of the motor 17 is fixedly connected to the connecting rod 401, the connecting rod 401 is rotatably connected to the mounting frame 301, the inner surface of the frame 1 is installed with a conveyor belt 18, the outer surface of the conveyor belt 18 is fixedly connected to the clamping seat 19 and the collecting box 20, the outer surface of the frame 1 is fixedly connected to the limiting frame 21, the inner surface of the limiting frame 21 is rotatably connected to the rotating frame 22, and the rotating frame 22 is fixedly connected to the mounting frame 301.

[0034] When the first slider 402 is rotated, the first slider 403 is driven to rotate. At the same time, a third slider 408 is provided at the bottom of the mounting block 404 at the other end of the first slider 403. When the first slider 403 rotates at this time, it can drive the third slider 408 to slide along the third slider 407. When the third slider 408 moves to the end of the third slider 407, the second slider 406 on the third slider 407 moves along the second slider 405. For this reason, the movement trajectory of the third slider 408 is a rectangular movement trajectory along the second slider 405 and the third slider 407. The third slider 408 drives the cleaning rod 410 at the bottom to move, and the first gear 8 on its outer surface is engaged with the fixed rectangular gear ring 7. This meshing structure causes the cleaning rod 410 to rotate around its own axis. In this way, the cleaning blade 411 can move horizontally and vertically to scrape the sand mold. During the trimming process, it rotates simultaneously to form a spiral trimming track, which can effectively remove the flash and residual molding sand on the edge of the sand mold. At the same time, when the first slider 402 rotates, it drives the rotating rod 9 at the bottom to rotate. The rotation of the rotating rod 9 drives the second gear 10 to rotate, and drives the spherical gear ring 12 to rotate through the third gear 11, thereby driving the rotating disk 13 to rotate, and the rotating disk 13 drives the vertical rod 14 to rotate. The outer surface of the vertical rod 14 is provided with a limiting groove, and the inner surface of the outer cylinder 15 is provided with a protrusion, so that when the vertical rod 14 rotates, it can drive the outer cylinder 15 to rotate through the cooperation of the protrusion and the limiting groove. The rotation of the outer cylinder 15 drives the rotating cylinder 202 which is also equipped with a protrusion and a limiting groove to rotate. After positioning, the first cylinder 303 drives its first connecting plate 304 to move downward, and the first connecting plate 304 drives the outer cylinder 15 to move downward. The outer cylinder 15 drives the sand box 213 at the bottom to move downward and contact with the mold, and fills sand after contact.

[0035] Working principle: First, the clamping seat 19 preliminarily fixes the mold and transmits it to the bottom of the device through the conveyor belt 18. The gear and the outer gear ring on the surface of the rotating frame 22 cooperate with each other, and the gear is driven to rotate by the external motor 17, thereby driving the outer gear ring to rotate, driving the rotating frame 22 to rotate inside the limit frame 21, and ensuring that the sand box 213 is directly above the mold. Then, the motor 17 drives the connecting rod 401 to rotate, and the connecting rod 401 drives the first slider 402 to rotate. When the first slider 402 rotates, it drives the first slider 403 connected internally to rotate. At the same time, a third slider 408 is provided at the bottom of the mounting block 404 at the other end of the first slider 403. At this time, the rotation of the first slider 403 can drive the third slider 408 along the third slider 4 07 slides, and when the third slider 408 moves to the end of the third slider 407, the second slider 406 on the third slider 407 moves along the second slider 405. For this reason, the movement trajectory of the third slider 408 is a rectangular movement trajectory along the second slider 405 and the third slider 407. The third slider 408 drives the cleaning rod 410 at the bottom to move, and the first gear 8 on its outer surface engages with the fixed rectangular gear ring 7. This meshing structure causes the cleaning rod 410 to rotate around its own axis. In this way, the cleaning blade 411 rotates at the same time during the process of scraping the edge of the sand mold horizontally and vertically, forming a spiral trimming trajectory, which can effectively remove the flash and residual sand on the edge of the sand mold. At the same time, the first slider 402 When rotating, it drives the rotating rod 9 at the bottom to rotate, and the rotation of the rotating rod 9 drives the second gear 10 to rotate, and drives the spherical gear ring 12 to rotate through the third gear 11, thereby driving the rotating disk 13 to rotate, and the rotating disk 13 drives the vertical rod 14 to rotate. The outer surface of the vertical rod 14 is provided with a limiting groove, and the inner surface of the outer cylinder 15 is provided with a protrusion, so that when the vertical rod 14 rotates, it can drive the outer cylinder 15 to rotate through the cooperation of the protrusion and the limiting groove. The rotation of the outer cylinder 15 drives the rotating cylinder 202 which is also equipped with a protrusion and a limiting groove to rotate. The rotating cylinder 202 can drive the first limiting ball 5 and the second limiting ball 308 on the surface to rotate, and the limiting of the inclined groove 6 and the straight groove can drive the external rotating block 204 to rotate synchronously. At this time, multiple rotating blocks 204 simultaneously drive The movable mounting plate 205 moves, and drives one end of the rotating rod 206 to move, so that the other end of the rotating rod 206 can pull the mounting rod 207 to move. A limited track is set on the mounting frame 301, and the mounting rod 207 always slides horizontally inside the limited track. At this time, the positioning frame 208 at the bottom of the mounting rod 207 can approach the sand box 213 and clamp it to position it so that it can remain horizontal. After positioning, the first cylinder 303 drives its first connecting plate 304 to move downward, and the first connecting plate 304 drives the outer cylinder 15 to move downward, and the outer cylinder 15 drives the bottom sand box 213 to move downward and contact with the mold. After contact, sand is filled, and the mold is demolded after sand filling. After demolding, the rotating frame 22 is continued to be rotated, and the clamping seat 19 is flipped at the same time.The bottom sand box 213 is turned upward, and the same operation is performed on the other side of the mold. After the sand boxes 213 on both sides are demolded, the mold is removed by the conveyor belt 18, and the box can be closed, poured, cooled and sanded. When cleaning the inside of the sand box 213, the collection box 20 is moved to the bottom of the sand box 213 by the conveyor belt 18. At this time, the inner wall of the sand box 213 is attached with sand, which is not convenient for cleaning. At this time, the second connecting plate 306 is driven upward by the second cylinder 305, and the second connecting plate 306 drives the rotating drum 202 to move upward, and the rotating drum 202 is rotated. The first limiting ball 5 inside 02 can slide inside the inclined groove 6. At this time, the rotating block 204 can rotate. After the bottom rotating block 204 rotates, the inclined groove 6 will connect with the bottom of the inclined groove 6 of the next rotating block 204, so that the rotating blocks 204 can be driven to rotate in sequence. As a result, the positioning frame 208 can hit the sand box 213 in turn, generating vibrations, which can knock the sand inside and shake it off. At the same time, the second limiting ball 308 will move along the arc groove 307 and the vertical groove 310, and can be reset by the first spring 309 later.

[0036] The above description is merely a preferred embodiment of the present invention and does not constitute any other form of limitation to the present invention. Any person skilled in the art may utilize the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes for application in other fields. However, any simple modification, equivalent change, and modification of the above embodiments made in accordance with the technical essence of the present invention without departing from the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A positioning and clamping device for aluminum casting sand molds, comprising a frame (1), characterized in that: A positioning mechanism (2) is provided inside the frame (1), and the positioning mechanism (2) comprises a fixed frame (201) and a rotating cylinder (202), the inner surface of the fixed frame (201) is fixedly connected to a fixed block (203), the outer surface of the rotating cylinder (202) is movably connected to a plurality of rotating blocks (204), the plurality of rotating blocks (204) are rotatably connected to each other via bearings, the bottom rotating block (204) is rotatably connected to the fixed block (203) via bearings, the outer surfaces of the plurality of rotating blocks (204) are fixedly connected to mounting plates (205), and the outer surfaces of the plurality of mounting plates (205) are rotatably connected via bearings. There is a rotating rod (206), the other ends of the plurality of rotating rods (206) are rotatably connected to the mounting rod (207) through bearings, the lower surfaces of the plurality of mounting rods (207) are fixedly connected to the positioning frames (208), the inner surfaces of the plurality of positioning frames (208) are rotatably connected to the plurality of positioning rollers (209) through bearings, a circular groove (210) is provided on the lower surface of the fixed block (203), a round ball (211) is rotatably connected to the inner surface of the circular groove (210), the lower surface of the round ball (211) is fixedly connected to the support frame (212), and the lower surface of the support frame (212) is fixedly connected to the sand box (213).

2. The positioning and clamping device for aluminum casting sand mold according to claim 1, characterized in that: A first limiting ball (5) is fixedly connected to the outer surface of the rotating cylinder (202), and an inner surface of each of the plurality of rotating blocks (204) is provided with an inclined groove (6), and each of the first limiting balls (5) is slidably connected to the inclined groove (6).

3. The positioning and clamping device for aluminum casting sand mold according to claim 1, characterized in that: A cleaning mechanism (3) is further provided inside the frame (1), and the cleaning mechanism (3) comprises a mounting frame (301), the inner surface of the mounting frame (301) is fixedly connected to a transverse plate (302), a first cylinder (303) is fixedly mounted on the lower surface of the transverse plate (302), an output end of the first cylinder (303) is fixedly connected to a first connecting plate (304), a lower surface of the first connecting plate (304) is fixedly connected to a second cylinder (305), and an output end of the first cylinder (303) is fixedly connected to the second connecting plate (306). 6), the lower surface of the second connecting plate (306) is rotatably connected to the rotating cylinder (202) via a bearing, an arc-shaped groove (307) is provided on the outer surface of the rotating cylinder (202), a second limiting ball (308) is slidably connected to the inner surface of the arc-shaped groove (307), a first spring (309) is fixedly connected between the second limiting ball (308) and the arc-shaped groove (307), a plurality of vertical grooves (310) are provided on the inner surfaces of the rotating blocks (204), and a plurality of the second limiting balls (308) are slidably connected to the vertical grooves (310).

4. The positioning and clamping device for aluminum casting sand mold according to claim 3, characterized in that: A trimming mechanism (4) is further provided inside the frame (1), and the trimming mechanism (4) includes a connecting rod (401), a first slider (402) being fixedly connected to the lower surface of the connecting rod (401), a first slider (403) being slidably connected to the inner surface of the first slider (402), a mounting block (404) being fixedly connected to the other end of the first slider (403), a second slider (405) being fixedly connected to the inner surface of the mounting frame (301), and a second slider (406) being slidably connected to the outer surface of the second slider (405). The surface of the second slider (406) is fixedly connected to the third slider (407), the lower surface of the mounting block (404) is rotatably connected to the third slider (408) via a bearing, the third slider (408) is slidably connected to the third slider (407), a second spring (409) is fixedly connected between the first slider (402) and the mounting block (404), the lower surface of the third slider (408) is rotatably connected to the cleaning rod (410) via a bearing, and the lower surface of the cleaning rod (410) is fixedly connected to a cleaning blade (411).

5. The positioning and clamping device for aluminum casting sand mold according to claim 4, characterized in that: A rectangular gear ring (7) is fixedly connected to the inner surface of the mounting frame (301), and a first gear (8) is fixedly connected to the outer surface of the cleaning rod (410), and the first gear (8) is meshingly connected to the gear ring.

6. The positioning and clamping device for aluminum casting sand mold according to claim 4, characterized in that: The lower surface of the first slider (402) is fixedly connected to a rotating rod (9), the outer surface of the rotating rod (9) is fixedly connected to a second gear (10), the outer surface of the second gear (10) is meshedly connected to a third gear (11), the outer surface of the third gear (11) is fixedly connected to a spherical gear ring (12), the third gear (11) is meshedly connected to the spherical gear ring (12), the lower surface of the spherical gear ring (12) is fixedly connected to a rotating disk (13), the lower surface of the rotating disk (13) is fixedly connected to a vertical rod (14), the outer surface of the vertical rod (14) is slidably connected to an outer cylinder (15), the outer cylinder (15) is slidably connected to the rotating cylinder (202), the outer cylinder (15) is rotatably connected to the fixed block (203) via a bearing, and the outer cylinder (15) is fixedly connected to the first connecting plate (304).

7. The positioning and clamping device for aluminum casting sand mold according to claim 6, characterized in that: A fixing plate (16) is fixedly connected to the inner surface of the mounting frame (301); the fixing plate (16) is rotatably connected to the rotating rod (9) and the third gear (11) via bearings; the vertical rod (14) is rotatably connected to the horizontal plate (302) via bearings; and the fixing frame (201) is fixedly connected to the mounting frame (301).

8. The positioning and clamping device for aluminum casting sand mold according to claim 3, characterized in that: The outer surface of the mounting frame (301) is fixedly connected to a motor (17), the output end of the motor (17) is fixedly connected to a connecting rod (401), and the connecting rod (401) is rotatably connected to the mounting frame (301).

9. The positioning and clamping device for aluminum casting sand mold according to claim 1, characterized in that: A conveyor belt (18) is installed on the inner surface of the frame (1), and a clamping seat (19) and a collection box (20) are fixedly connected to the outer surface of the conveyor belt (18).

10. The positioning and clamping device for aluminum casting sand mold according to claim 1, characterized in that: The outer surface of the frame (1) is fixedly connected to a limiting frame (21), the inner surface of the limiting frame (21) is rotatably connected to a rotating frame (22), and the rotating frame (22) is fixedly connected to the mounting frame (301).

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