Sand mixing and mixing equipment for casting of automobile parts
By designing a scraper on the mixing shaft and a mixing blade structure that is easy to disassemble in the sand mixing equipment, the problems of sand adhesion and maintenance difficulties are solved, and an efficient sand mixing process and convenient equipment maintenance are achieved.
Patent Information
- Application Number
- CN202520416882.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-03-11
AI Technical Summary
Existing sand mixing equipment for automotive parts casting often results in sand adhering to the inner wall of the mixing drum after mixing, making cleaning difficult and maintenance costly, especially since the replacement process for worn agitator blades is cumbersome.
A sand mixing device including a mixing component and a scraping component was designed. The mixing shaft is equipped with mixing blades and a scraper. The mixing shaft is driven by a drive motor to rotate to achieve sand mixing. The scraper removes the sand adhering to the barrel wall. The barrel cover can be opened vertically for easy disassembly and replacement of the mixing blades. The connecting component adopts a tension spring and a locking block to achieve quick disassembly.
It enables quick disassembly and replacement of the mixing blades, reduces maintenance difficulty and cost, ensures uniform mixing without residue, and improves the efficiency of equipment use and the quality of sand mixing.
Smart Images
Figure CN223819585U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automobile manufacturing technology, and in particular to a sand mixing and preparation equipment for casting automobile parts. Background Technology
[0002] In the casting process of automotive parts, the preparation of molding sand or core sand is a crucial step. The quality of molding sand directly affects the surface quality, dimensional accuracy and internal structure of the casting, while core sand is used to form the complex internal structure of the casting. In order to obtain high-quality molding sand or core sand, old sand, new sand, molding sand binder and auxiliary materials need to be mixed evenly in a certain proportion, and it is necessary to ensure that the binder and auxiliary materials can be evenly coated on the surface of the sand particles. This mixing process needs to be completed by sand mixing equipment.
[0003] However, in existing sand mixing equipment for automotive parts casting, after mixing, the sand adheres to the inner wall of the mixing drum, making it difficult to completely discharge, resulting in material waste and cleaning difficulties. At the same time, the maintenance cost of existing sand mixing equipment is high, especially when the mixing blades are worn, the replacement process is cumbersome and time-consuming, affecting the overall efficiency of the equipment. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a sand mixing and preparation equipment for automotive parts casting, which has the advantages of quick disassembly and maintenance and easy cleaning. It solves the problems of existing sand mixing and preparation equipment for automotive parts casting where sand adheres to the inner wall of the mixing tank after mixing, making cleaning difficult, and the cumbersome and time-consuming replacement process when the stirring blades are worn.
[0005] This utility model provides the following technical solution: a sand mixing and preparation device for casting automotive parts, comprising support legs, a sand mixing barrel fixedly connected to the top surfaces of the four support legs, a barrel lid snapped onto the top surface of the sand mixing barrel, a feed hopper uniformly fixedly connected to the top of the barrel lid, and discharge pipes symmetrically fixedly connected to the bottom surface of the sand mixing barrel, each discharge pipe having a valve inside. A mixing assembly is provided inside the sand mixing barrel, the mixing assembly including a drive motor fixedly connected to the top surface of the barrel lid, the output shaft of the drive motor passing through the surface of the barrel lid and fixedly connected... A first hexagonal prism is attached to the bottom center of the mixing bucket, and a connecting seat is fixedly connected to the inner wall surface. A second hexagonal prism is rotatably connected to the top surface of the connecting seat. A stirring shaft is provided between the first and second hexagonal prisms. Hexagonal grooves are provided at both ends of the stirring shaft. A connecting plate is uniformly fixedly connected to the surface of the stirring shaft. Stirring blades are uniformly provided on the surface of the connecting plate. A connecting assembly is provided between the stirring blades and the connecting plate. A scraping assembly is uniformly provided on the surface of the stirring shaft. The mixing assembly and the scraping assembly can be removed from the mixing bucket by opening the bucket lid vertically.
[0006] Preferably, the first hexagonal prism and the second hexagonal prism are slidably connected inside the hexagonal groove, and the discharge pipe is arranged on both sides of the connecting seat for discharging material.
[0007] Preferably, the connecting assembly includes connecting ports evenly distributed on the surface of the connecting plate. U-shaped blocks are fixedly connected to the surface of the stirring blades near the stirring shaft. U-shaped grooves and locking grooves are formed on both sides of the U-shaped blocks. Connecting blocks are arranged opposite each other on both sides of the U-shaped blocks. Limiting rings and locking blocks are fixedly connected to the surfaces of the connecting blocks. Tension springs are fixedly connected between the opposing surfaces of the connecting blocks. The stirring blades can be quickly disassembled and replaced simply by pulling the connecting blocks, reducing maintenance difficulty and cost.
[0008] Preferably, the tension spring is disposed inside the connection port, the U-shaped groove and the locking groove are interconnected, the connecting block is movably connected inside the U-shaped groove, the limiting ring is movably connected inside the U-shaped groove, and the locking block is movably connected inside the locking groove.
[0009] Preferably, the scraping assembly includes a connecting frame that is uniformly and fixedly connected to the surface of the stirring shaft, and scrapers are fixedly connected to the surface of the connecting frame.
[0010] Preferably, the surface of the scraper away from the connecting frame is in contact with the inner wall surface of the mixing bucket. The number of connecting frames is the same as the number of scrapers. The scrapers are in contact with the inner wall surface of the mixing bucket, which can effectively scrape off the sand adhering to the bucket wall and ensure uniform mixing without residue.
[0011] Compared with the prior art, the present invention has the following beneficial effects:
[0012] 1. With the mixing and connecting components in place, when the mixing blades need to be disassembled and replaced individually, simply open the lid vertically to remove the mixing and scraping components from the sand mixing tank. Then, simply pull the connecting block to quickly disassemble and replace the mixing blades, reducing maintenance difficulty and cost, and indirectly improving the availability and production efficiency of the equipment.
[0013] 2. The stirring shaft is driven by a motor to rotate. The stirring blades on the stirring shaft stir the sand evenly, achieving rapid and thorough mixing of the sand. At the same time, the scraping component on the stirring shaft rotates synchronously with the stirring shaft. The scraper abuts against the inner wall surface of the sand mixing bucket, effectively scraping off the sand adhering to the bucket wall, ensuring uniform mixing without residue, and improving the sand mixing efficiency and quality. Attached Figure Description
[0014] Figure 1 This is a front view of the structure of this utility model;
[0015] Figure 2 This is a schematic diagram of the hybrid component in the structure of this utility model;
[0016] Figure 3 This is a schematic diagram of the connecting components in the structure of this utility model.
[0017] In the diagram: 1. Support leg; 2. Mixing bucket; 3. Bucket lid; 4. Feed hopper; 5. Discharge pipe; 6. Mixing component; 61. Drive motor; 62. First hexagonal prism; 63. Connecting seat; 64. Second hexagonal prism; 65. Stirring shaft; 66. Hexagonal groove; 67. Connecting plate; 68. Stirring blade; 69. Connecting component; 691. Connecting port; 692. U-shaped block; 693. U-shaped groove; 694. Locking groove; 695. Connecting block; 696. Limiting ring; 697. Locking block; 698. Tension spring; 7. Scraping component; 71. Connecting frame; 72. Scraper. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] Please see Figures 1-3This utility model provides an embodiment of a sand mixing device for casting automotive parts, comprising support legs 1, with a mixing bucket 2 fixedly connected to the top surfaces of the four support legs 1, a bucket lid 3 snapped onto the top surface of the mixing bucket 2, and feed hoppers 4 uniformly fixedly connected to the top of the bucket lid 3. Discharge pipes 5 are symmetrically fixedly connected to the bottom surface of the mixing bucket 2, and valves are installed inside each discharge pipe 5. A mixing component 6 is installed inside the mixing bucket 2, and the mixing component 6 includes a drive motor 61 fixedly connected to the top surface of the bucket lid 3. The output shaft of 1 is fixedly connected to a first hexagonal prism 62 through the surface of the bucket cover 3. A connecting seat 63 is fixedly connected to the inner wall surface of the bottom center of the sand mixing bucket 2. A second hexagonal prism 64 is rotatably connected to the top surface of the connecting seat 63. A stirring shaft 65 is arranged between the first hexagonal prism 62 and the second hexagonal prism 64. Hexagonal grooves 66 are opened at both ends of the stirring shaft 65. A connecting plate 67 is evenly fixedly connected to the surface of the stirring shaft 65. Stirring blades 68 are evenly arranged on the surface of the connecting plate 67. A connecting component is arranged between the stirring blades 68 and the connecting plate 67. 69. Scraping components 7 are evenly distributed on the surface of the stirring shaft 65. The connecting component 69 includes connecting ports 691 evenly distributed on the surface of the connecting plate 67. U-shaped blocks 692 are fixedly connected to the surface of the stirring blades 68 near the stirring shaft 65. U-shaped grooves 693 and locking grooves 694 are formed on both sides of the U-shaped blocks 692. Connecting blocks 695 are arranged opposite each other on both sides of the U-shaped blocks 692. Limit rings 696 are fixedly connected to the surface of the connecting blocks 695. A locking block 697 is attached, and tension springs 698 are fixedly connected between the opposite surfaces of the connecting block 695. The stirring blade 68 and the connecting plate 67 are flexibly connected through the connecting assembly 69. The U-shaped block 692 in the connecting assembly 69 is fixed on the stirring blade 68. The connecting block 695 and the locking block 697 are movably connected in the U-shaped groove 693 and the locking groove 694 on both sides of the connecting assembly 695, respectively. The tension spring 698 is set inside the connecting port 691, so that the stirring blade 68 can flexibly adjust its angle according to the resistance of the sand during the stirring process, thereby enhancing the stirring effect.
[0020] Please see Figures 1-3The first hexagonal prism 62 and the second hexagonal prism 64 are both slidably connected inside the hexagonal groove 66. The discharge pipe 5 is located on both sides of the connecting seat 63. The tension spring 698 is located inside the connecting port 691. The U-shaped groove 693 and the locking groove 694 are interconnected. The connecting block 695 is movably connected inside the U-shaped groove 693. The limiting ring 696 is movably connected inside the U-shaped groove 693. The locking block 697 is movably connected inside the locking groove 694. The scraping assembly 7 includes a connecting block that is uniformly fixedly connected to the surface of the stirring shaft 65. Scrapers 72 are fixedly connected to the surfaces of the frame 71 and the connecting frame 71. The surface of the scraper 72 away from the connecting frame 71 abuts against the inner wall surface of the sand mixing bucket 2. The number of connecting frames 71 and scrapers 72 is the same. The U-shaped groove 693 and the connecting port 691 are on the same horizontal line. The scraper 72 abuts against the inner wall surface of the sand mixing bucket 2, thereby effectively scraping off the sand adhering to the bucket wall, ensuring uniform mixing without residue. During the discharge process, the scraper 72 rotates synchronously, thereby accelerating the discharge process and indirectly improving the sand mixing efficiency.
[0021] Working principle: In use, sand and other additives are first added to the mixing tank 2 through the feed hopper 4 on the lid 3. Then, the drive motor 61 is started. The output shaft of the drive motor 61 drives the first hexagonal prism 62 to rotate. Since the first hexagonal prism 62 is slidably connected in the hexagonal groove 66 at one end of the stirring shaft 65, and the other end of the stirring shaft 65 is rotatably connected to the connecting seat 63 at the bottom of the mixing tank 2 through the second hexagonal prism 64, the rotation of the drive motor 61 will drive the stirring shaft 65 to rotate inside the mixing tank 2. When the stirring shaft 65 rotates, the... The receiving plate 67 also rotates, driving the stirring blades 68 to stir the sand, achieving uniform mixing. Simultaneously, the connecting frame 71 in the scraping assembly 7 is fixedly connected to the stirring shaft 65, causing the scraper 72 on the connecting frame 71 to rotate synchronously with the stirring shaft 65. The scraper 72 abuts against the inner wall surface of the mixing bucket 2, effectively scraping away the sand adhering to the bucket wall, ensuring uniform mixing without residue. After mixing is complete, the valve inside the discharge pipe 5 is opened, and the mixed sand is discharged through the discharge pipe 5, completing the entire sand mixing process. During the discharge process, the scraper 72 rotates synchronously, thereby accelerating the discharge process. Since the mixing blade 68 is a wear part, when it needs to be disassembled and replaced separately, simply open the bucket lid 3 vertically, separating the first hexagonal prism 62 from its corresponding hexagonal groove 66. Then, by lifting the connecting bracket 71, separate the second hexagonal prism 64 from its corresponding hexagonal groove 66. At this point, the entire mixing assembly 6 and scraping assembly 7 can be removed from the interior of the sand mixing bucket 2. Then, locate the mixing blade 68 that needs to be replaced and pull the connecting bracket 71 to both sides simultaneously. When block 695 is pulled and tension spring 698 is stretched, locking block 697 is disengaged from the inside of locking groove 694, so that the corresponding stirring blade 68 can be removed from the surface of connecting plate 67 for replacement. During installation, pull connecting block 695 to both sides at the same time, and the stirring blade 68 is snapped into the surface of connecting plate 67 by U-shaped block 692. When connecting block 695 is released, locking block 697 is snapped into the inside of locking groove 694 by tension spring 698, and stirring blade 68 can be fixedly installed by U-shaped block 692.
Claims
1. A sand mixing and preparation device for casting automotive parts, comprising support legs (1), a sand mixing bucket (2) fixedly connected to the top surface of four support legs (1), a bucket lid (3) snapped onto the top surface of the sand mixing bucket (2), a feed hopper (4) uniformly fixedly connected to the top of the bucket lid (3), and a discharge pipe (5) symmetrically fixedly connected to the bottom surface of the sand mixing bucket (2), wherein each discharge pipe (5) is equipped with a valve, characterized in that: The mixing bucket (2) is equipped with a mixing component (6) inside; The mixing component (6) includes a drive motor (61) fixedly connected to the top surface of the lid (3). The output shaft of the drive motor (61) is fixedly connected to a first hexagonal prism (62) through the surface of the lid (3). A connecting seat (63) is fixedly connected to the inner wall surface of the bottom center of the sand mixing bucket (2). A second hexagonal prism (64) is rotatably connected to the top surface of the connecting seat (63). A stirring shaft (65) is provided between the first hexagonal prism (62) and the second hexagonal prism (64). Hexagonal grooves (66) are provided at both ends of the stirring shaft (65). A connecting plate (67) is uniformly fixedly connected to the surface of the stirring shaft (65). A stirring blade (68) is uniformly provided on the surface of the connecting plate (67). A connecting component (69) is provided between the stirring blade (68) and the connecting plate (67). A scraping component (7) is uniformly provided on the surface of the stirring shaft (65).
2. The sand mixing and preparation equipment for casting automotive parts according to claim 1, characterized in that: The connecting assembly (69) includes connecting ports (691) evenly distributed on the surface of the connecting plate (67). U-shaped blocks (692) are fixedly connected to the surface of the stirring blade (68) near the stirring shaft (65). U-shaped grooves (693) are provided on both sides of the U-shaped block (692). Locking grooves (694) are provided on both sides of the U-shaped block (692). Connecting blocks (695) are arranged opposite to each other on both sides of the U-shaped block (692). Limit rings (696) are fixedly connected to the surface of the connecting blocks (695). Locking blocks (697) are fixedly connected to the surface of the connecting blocks (695). Tension springs (698) are fixedly connected between the opposite surfaces of the connecting blocks (695).
3. The sand mixing and preparation equipment for casting automotive parts according to claim 1, characterized in that: The scraping assembly (7) includes a connecting frame (71) that is uniformly fixedly connected to the surface of the stirring shaft (65), and scrapers (72) are fixedly connected to the surface of the connecting frame (71).
4. The sand mixing and preparation equipment for casting automotive parts according to claim 2, characterized in that: The tension spring (698) is disposed inside the connection port (691), the U-shaped groove (693) and the locking groove (694) are interconnected, the connecting block (695) is movably connected inside the U-shaped groove (693), the limiting ring (696) is movably connected inside the U-shaped groove (693), and the locking block (697) is movably connected inside the locking groove (694).
5. The sand mixing and preparation equipment for casting automotive parts according to claim 3, characterized in that: The surface of the scraper (72) away from the connecting frame (71) is in contact with the inner wall surface of the mixing bucket (2), and the number of connecting frames (71) and scrapers (72) is the same.
6. The sand mixing and preparation equipment for casting automotive parts according to claim 1, characterized in that: The first hexagonal prism (62) and the second hexagonal prism (64) are both slidably connected inside the hexagonal groove (66), and the discharge pipe (5) is arranged on both sides of the connecting seat (63).