Improved fluid sand core machine
Patent Information
- Application Number
- CN202610970025.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-07-01
- Publication Date
- 2026-08-21
AI Technical Summary
[0004]本发明公开一种流沙改进型射芯机，旨在解决现有的流沙射芯机在送料时，对于送料的抗堵能力以及输送的稳定性有待提升的技术问题
[0006] By replacing the traditional feed hose structure with a double-funnel transfer mechanism based on traditional quicksand core shooting equipment and technology, the problem of easy hose blockage is completely solved. The movable funnel, which moves relative to itself using its own weight, eliminates the defects of high friction and easy sand adhesion on the inner wall of the hose, fundamentally preventing sand particles from condensing and blocking the channel. Simultaneously, utilizing the increased weight of the movable funnel when sand particles cause blockage, the spout assembly at the top of the main funnel expands along the interior of the movable funnel. Then, through the diversion of the fixed funnel and the auxiliary insertion pipe, the blockage material inside the movable funnel is squeezed, broken, and diverted to reduce pressure, achieving automatic anti-blockage and unblocking. No additional power source or control device is required; the structure is simple and reliable. The two-stage funnel structure combined with the weight mechanism can automatically clear blockages in the early stages, avoiding downtime for cleaning and ensuring continuous operation of the core shooter. A stable sand supply flow ensures sufficient sand in the storage tank and uniform sand shooting pressure, which is beneficial for improving the strength and dimensional accuracy of the sand mold. Furthermore, the invention has a simple structure, with components made from common mechanical parts, making it suitable for low-cost retrofitting of existing core shooter sand supply systems.
Smart Images
Figure CN122605929A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of casting equipment technology, and in particular to an improved core shooter for quicksand casting. Background Technology
[0002] Core shooters are commonly used core-making equipment in the foundry industry. Their working principle is to use compressed air to evenly inject molding sand into the sand box for pre-compacting, and then apply pressure to compact it. In the sand supply system of the core shooter, the sand flow channel between the sand storage hopper (also called sand storage box or sand bucket) and the sand storage tank (also called sand storage pipe or storage cavity) is the key link to ensure the continuity of sand supply.
[0003] In existing technologies, the connection between the sand storage hopper and the sand storage tank is mostly achieved using a flexible hose. While this connection method offers some installation flexibility, in actual use, due to limitations in installation space and connection structure, the hose diameter is usually small, making it difficult to meet the demand for high-flow sand supply. Furthermore, molding sand has a certain degree of viscosity, especially when it contains a certain amount of moisture or resin binder, resulting in poor fluidity and a tendency to clump together on the inner wall of the hose. Once clumps form, the narrow passage of the hose can easily become completely blocked. After the hose becomes blocked, due to the flexibility of the pipe and the high friction on the inner wall, it is difficult to clear the blockage by the weight of the sand particles themselves, often requiring machine shutdown and manual cleaning, which seriously affects production efficiency. Even if it is not completely blocked, the sand clumps in the hose can lead to insufficient or unstable sand supply, directly affecting the sand shooting quality and sand mold strength of the core shooter. Summary of the Invention
[0004] This invention discloses an improved quicksand core shooter, which aims to solve the technical problem that existing quicksand core shooters need to improve their anti-blocking ability and conveying stability during feeding.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: An improved quicksand core shooter includes a machine base, a sand-blasting nozzle disposed in the middle of the machine base, a sand storage tank mounted on the top of the machine base, and a discharge straight pipe connected to the outside of the output end of the sand storage tank. The top of the sand-blasting nozzle is provided with a transfer mechanism for transferring and conveying sand, and the transfer mechanism is vertically distributed below the discharge straight pipe. The transfer mechanism includes several sliding rods fixedly installed on the top of the sandblasting nozzle. A movable funnel is slidably sleeved on the outside of the sliding rod. The movable funnel is vertically distributed below the discharge straight pipe and receives the falling material. A main discharge pipe is connected through the top of the sandblasting nozzle. A spout assembly is provided on the top of the main discharge pipe. The spout assembly is connected through the inside of the movable funnel and expands along the inside of the movable funnel to guide the blocked material. The flower-shaped assembly includes several elastic flower pieces arranged in a ring, and these elastic flower pieces tend to fold outwards along the interior of the movable funnel.
[0006] By replacing the traditional feed hose structure with a double-funnel transfer mechanism based on traditional quicksand core shooting equipment and technology, the problem of easy hose blockage is completely solved. The movable funnel, which moves relative to itself using its own weight, eliminates the defects of high friction and easy sand adhesion on the inner wall of the hose, fundamentally preventing sand particles from condensing and blocking the channel. Simultaneously, utilizing the increased weight of the movable funnel when sand particles cause blockage, the spout assembly at the top of the main funnel expands along the interior of the movable funnel. Then, through the diversion of the fixed funnel and the auxiliary insertion pipe, the blockage material inside the movable funnel is squeezed, broken, and diverted to reduce pressure, achieving automatic anti-blockage and unblocking. No additional power source or control device is required; the structure is simple and reliable. The two-stage funnel structure combined with the weight mechanism can automatically clear blockages in the early stages, avoiding downtime for cleaning and ensuring continuous operation of the core shooter. A stable sand supply flow ensures sufficient sand in the storage tank and uniform sand shooting pressure, which is beneficial for improving the strength and dimensional accuracy of the sand mold. Furthermore, the invention has a simple structure, with components made from common mechanical parts, making it suitable for low-cost retrofitting of existing core shooter sand supply systems.
[0007] In a preferred embodiment, an elastic cloth bag is fixedly sandwiched between several of the elastic flower pieces, and both the elastic flower pieces and the elastic cloth bag are distributed inside the movable funnel.
[0008] By setting an elastic bag structure between the elastic flower pieces, the expansion of the elastic flower pieces drives the elastic bag to extend synchronously, thereby improving the sealing performance of the flower opening assembly after opening and closing and maintaining the integrity of the equipment operation.
[0009] In a preferred embodiment, a secondary insert is fixedly sleeved on the outer side of the spout assembly. The length of the secondary insert is equal to half that of the spout assembly. Under normal conditions, it is distributed on the outer side of the movable funnel. When relative sliding occurs, it penetrates into the interior of the movable funnel. The secondary insert and the spout assembly are fixedly connected by a grid plate.
[0010] By further providing a secondary insertion tube structure on the outside of the spout assembly, as the movable funnel moves relative to it, after the travel distance reaches a specified length, the secondary insertion tube will be inserted into the interior of the movable funnel. While the spout assembly extends and receives the material falling from the discharge straight pipe, the secondary insertion tube will guide and reduce the weight of the material already accumulated inside the movable funnel, causing the movable funnel to reset and move, thereby improving the completeness of the equipment operation.
[0011] In a preferred embodiment, a fixed funnel is sleeved and fixed above the main funnel, the fixed funnel is vertically distributed below the movable funnel, and a plurality of side openings are provided through the outer wall of the connection end between the main funnel and the fixed funnel, the side openings being distributed inside the fixed funnel.
[0012] By setting a fixed funnel structure on the basis of the main leakage pipe, as the movable funnel moves relative to it, the fixed funnel located below will continue to receive the leaked material until the movement stroke reaches the specified length, thereby improving the completeness of the equipment operation.
[0013] As can be seen from the above, the improved quicksand core shooting machine provided by the present invention has the following technical effects.
[0014] Firstly, by using a transfer mechanism with a double funnel structure to replace the traditional material feeding hose structure, the problem of easy clogging of the hose is completely solved. The movable funnel, which moves relative to itself by its own weight, eliminates the defects of high friction on the inner wall of the hose and easy adhesion of sand particles, fundamentally preventing sand particles from condensing and clogging the channel. At the same time, by utilizing the characteristic that the movable funnel's own weight increases when sand particles clog, the spout assembly at the top of the main funnel expands along the interior of the movable funnel. Then, through the diversion of the fixed funnel and the auxiliary insertion pipe, the blockage material inside the movable funnel is squeezed, broken, diverted, and depressurized, achieving automatic anti-clogging and unblocking.
[0015] Secondly, the operation of this equipment requires no additional power source or control device. Its structure is simple and reliable. The two-stage funnel structure combined with the self-weight mechanism can clear blockages in the early stages, avoiding downtime for cleaning and ensuring continuous operation of the core shooter. The stable sand supply flow ensures sufficient sand in the sand storage tank and uniform sand shooting pressure, which is beneficial to improving the strength and dimensional accuracy of the sand mold. The invention has a simple structure and the parts are all common mechanical components, making it suitable for low-cost retrofitting of existing core shooter sand supply systems. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure proposed in this invention.
[0017] Figure 2 This is a side view of the overall structure proposed in this invention.
[0018] Figure 3 This is a schematic diagram of the top structure of the sandblasting nozzle proposed in this invention.
[0019] Figure 4 This is an exploded view of the transfer mechanism structure proposed in this invention.
[0020] Figure 5 This is a schematic diagram of the fixed funnel structure proposed in this invention.
[0021] Figure 6 This is a cross-sectional view of the fixed funnel structure proposed in this invention.
[0022] Figure 7 The present invention proposes Figure 6 Enlarged view of the structure at point A in the middle.
[0023] Figure 8 This is a flowchart illustrating the operational status of the transfer mechanism proposed in this invention.
[0024] In the diagram: 1. Machine base; 2. Sandblasting nozzle; 3. Sand storage tank; 4. Feeding straight pipe; 5. Transfer mechanism; 501. Slide rod; 502. Movable funnel; 503. Main discharge pipe; 504. Flower-shaped assembly; 5041. Elastic flower plate; 5042. Elastic cloth bag; 5043. Edge clamping part; 505. Secondary insertion pipe; 5051. Grid plate; 506. Fixed funnel; 5061. Side opening; 5062. Annular groove; 507. Spring; 6. Lifting platform. Detailed Implementation
[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.
[0026] The improved core shooting machine for quicksand disclosed in this invention is mainly used in scenarios where the feeding pipeline is blocked during sand mold prefabrication using core shooting technology.
[0027] Reference Figures 1 to 8 An improved quicksand core shooting machine includes a machine base 1, a sand-blasting nozzle 2 located in the middle of the machine base 1, a sand storage tank 3 mounted on the top of the machine base 1, and a discharge straight pipe 4 connected to the outside of the output end of the sand storage tank 3. The top of the sand-blasting nozzle 2 is provided with a transfer mechanism 5 for transferring and conveying sand, and the transfer mechanism 5 is vertically distributed below the discharge straight pipe 4. The transfer mechanism 5 includes several sliding rods 501 fixedly installed on the top of the sandblasting nozzle 2. A movable funnel 502 is slidably sleeved on the outside of the sliding rod 501. The movable funnel 502 is vertically distributed below the discharge straight pipe 4 and receives the falling material. The top of the sandblasting nozzle 2 is connected to the main discharge pipe 503. A flower-shaped assembly 504 is provided on the top of the main discharge pipe 503. The flower-shaped assembly 504 is connected to the inside of the movable funnel 502 and expands along the inside of the movable funnel 502 to guide the blocked material. The flower-shaped assembly 504 includes several elastic flower pieces 5041 arranged in a ring. The elastic flower pieces 5041 are along the interior of the movable funnel 502 and have a tendency to fold outward.
[0028] In this embodiment: When the equipment is started and working normally, the molding sand in the sand storage tank 3 located at the top of the machine platform 1 enters the interior of the movable funnel 502 through the feed straight pipe 4 under the action of gravity, and then enters the interior of the sandblasting nozzle 2 through the flower-shaped assembly 504 and the main blast pipe 503 in sequence. When the flowability of the accumulated sand particles decreases and they cannot fall in time, the amount of sand accumulated in the movable funnel 502 continues to increase. At this time, the movable funnel 502 will slowly move downward. During the descent of the movable funnel 502, the flower-shaped assembly 504 located at the top of the main blast pipe 503 will move upward relative to it, and several elastic flower pieces 5041 of the flower-shaped assembly 504 will expand along the interior of the movable funnel 502. At this time, the molding sand that continues to fall from the feed straight pipe 4 will flow directly away from the flower-shaped assembly 504.
[0029] Among them, an elastic cloth bag 5042 is fixedly wrapped between several elastic flower pieces 5041. The elastic flower pieces 5041 and the elastic cloth bag 5042 are both distributed inside the movable funnel 502. The expansion of the elastic flower pieces 5041 will drive the elastic cloth bag 5042 to expand synchronously. The expansion of the elastic cloth bag 5042 is used to maintain the sealing between all the elastic flower pieces 5041.
[0030] Reference Figures 4 to 8 In a preferred embodiment, a secondary insertion tube 505 is fixedly sleeved on the outer side of the flower-shaped assembly 504. The length of the secondary insertion tube 505 is equal to half that of the flower-shaped assembly 504. Under normal conditions, it is distributed on the outer side of the movable funnel 502. When relative sliding occurs, it penetrates into the interior of the movable funnel 502. The secondary insertion tube 505 and the flower-shaped assembly 504 are fixedly connected by a grid plate 5051.
[0031] When the flowability of the accumulated sand decreases and it cannot fall in time, the amount of sand in the movable funnel 502 continues to increase. At this time, the movable funnel 502 will slowly move downward. During the descent of the movable funnel 502, the spout assembly 504 and the auxiliary insertion pipe 505 located at the top of the main discharge pipe 503 will move upward relative to each other. The spout assembly 504 will expand along the inside of the movable funnel 502. At this time, the molding sand that continues to fall from the discharge straight pipe 4 will flow directly through the spout assembly 504, while the accumulated sand inside the movable funnel 502 will be guided down through the auxiliary insertion pipe 505. Once the amount of sand inside the movable funnel 502 drops to a normal level, the movable funnel 502 will return to its normal height and thus re-enter a stable working state.
[0032] Each elastic flower piece 5041 has a retaining edge 5043 fixedly installed at its outer end, and the retaining edge 5043 is pressed into contact with the inner wall of the movable funnel 502.
[0033] Reference Figures 5 to 8In a preferred embodiment, a fixed funnel 506 is sleeved and fixed above the main funnel 503. The fixed funnel 506 is vertically distributed below the movable funnel 502. A plurality of side openings 5061 are provided through the outer wall of the connection end between the main funnel 503 and the fixed funnel 506. The side openings 5061 are distributed inside the fixed funnel 506.
[0034] As the movable funnel 502 moves slowly downward, the spout assembly 504 and the auxiliary insertion tube 505 at the top of the main inlet tube 503 move upward relative to each other. During this process, some of the sand generated at the bottom opening of the movable funnel 502 falls into the interior of the fixed funnel 506 and then falls into the interior of the main inlet tube 503 through the side opening 5061.
[0035] Specifically, a spring 507 is sleeved and fixed between the fixed funnel 506 and the movable funnel 502. The outer edge of the fixed funnel 506 is provided with an annular groove 5062, and the spring 507 is distributed inside the annular groove 5062. As more and more material accumulates inside the movable funnel 502, the spring 507 will be compressed by the movable funnel 502, thereby causing the movable funnel 502 to move downward. When the material accumulation inside the movable funnel 502 decreases, the spring 507, which elastically resets, will push the movable funnel 502 to reset and move.
[0036] Reference Figures 1 to 3 In a preferred embodiment, a lifting platform 6 is provided at the bottom of the sandblasting nozzle 2. The lifting platform 6 is fixedly installed inside the machine base 1 and drives the sandblasting nozzle 2 and the transfer mechanism 5 to lift as a whole.
[0037] Working principle: During use, molding sand in the sand storage tank 3 located at the top of the machine 1 enters the interior of the movable funnel 502 under the action of gravity through the feed straight pipe 4, and then sequentially enters the interior of the sandblasting nozzle 2 through the spout assembly 504 and the main blast pipe 503. When the flowability of the accumulated sand particles decreases and they cannot fall in time, the amount of sand accumulated in the movable funnel 502 continues to increase. At this time, the movable funnel 502 will slowly move downward. During the descent of the movable funnel 502, the spout assembly 504 and the auxiliary insertion pipe 505 located at the top of the main blast pipe 503 will move upward relative to each other. The spout assembly 504 will expand along the interior of the movable funnel 502. At this time, the molding sand that continues to fall from the straight feed pipe 4 will flow directly away from the flower-shaped assembly 504, while the accumulated sand inside the movable funnel 502 will be guided down through the auxiliary insertion pipe 505. Once the amount of accumulated sand inside the movable funnel 502 drops to a normal level, the movable funnel 502 will return to its normal height, thus re-entering a stable working state. As the flower-shaped assembly 504 and the auxiliary insertion pipe 505 located at the top of the main funnel 503 move upward relative to each other, during this process, some of the leaking sand generated at the bottom opening of the movable funnel 502 will fall into the interior of the fixed funnel 506 and fall into the interior of the main funnel 503 through the side opening 5061.
[0038] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. A modified quicksand core shooter, comprising a machine base (1), a sandblasting nozzle (2) disposed in the middle of the machine base (1), a sand storage tank (3) mounted on the top of the machine base (1), and a straight discharge pipe (4) connected to the outside of the output end of the sand storage tank (3), characterized in that, The top of the sandblasting nozzle (2) is provided with a transfer mechanism (5) for transferring and conveying sand material, and the transfer mechanism (5) is vertically distributed below the discharge straight pipe (4); The transfer mechanism (5) includes several sliding rods (501) fixedly installed on the top of the sandblasting nozzle (2). A movable funnel (502) is slidably sleeved on the outside of the sliding rod (501). The movable funnel (502) is vertically distributed below the discharge straight pipe (4) and receives the falling material. The top of the sandblasting nozzle (2) is connected to the main discharge pipe (503). A flower-shaped assembly (504) is provided on the top of the main discharge pipe (503). The flower-shaped assembly (504) is connected to the inside of the movable funnel (502) and expands along the inside of the movable funnel (502) to guide the blocked material. The flower-shaped assembly (504) includes several elastic flower pieces (5041) arranged in a ring, and the elastic flower pieces (5041) tend to fold outward along the interior of the movable funnel (502).
2. The improved quicksand core shooter according to claim 1, characterized in that, An elastic cloth bag (5042) is fixedly wrapped between several of the elastic flower pieces (5041), and both the elastic flower pieces (5041) and the elastic cloth bag (5042) are distributed inside the movable funnel (502).
3. The improved quicksand core shooter according to claim 1, characterized in that, Each of the elastic flower pieces (5041) has a retaining edge (5043) fixedly installed at its outer end, and the retaining edge (5043) is pressed into contact with the inner wall of the movable funnel (502).
4. The improved quicksand core shooter according to claim 1, characterized in that, A secondary insertion tube (505) is fixedly sleeved on the outside of the flower-shaped assembly (504). The length of the secondary insertion tube (505) is equal to half that of the flower-shaped assembly (504). Under normal conditions, it is distributed on the outside of the movable funnel (502). When relative sliding occurs, it penetrates into the interior of the movable funnel (502).
5. A modified core shooter for quicksand according to claim 4, characterized in that, The auxiliary insertion tube (505) and the flower-shaped assembly (504) are fixedly connected by a grid plate (5051).
6. The improved core shooter for quicksand according to claim 1, characterized in that, A fixed funnel (506) is sleeved and fixed above the main funnel (503), and the fixed funnel (506) is vertically distributed below the movable funnel (502).
7. A modified core shooter for quicksand according to claim 6, characterized in that, The outer wall of the connection end between the main drain pipe (503) and the fixed funnel (506) is provided with a plurality of side openings (5061), which are distributed inside the fixed funnel (506).
8. A modified core shooter for quicksand according to claim 6, characterized in that, A spring (507) is fixedly connected between the fixed funnel (506) and the movable funnel (502).
9. A modified core shooter for quicksand according to claim 8, characterized in that, The fixed funnel (506) has an annular groove (5062) on its outer edge, and the spring (507) is distributed inside the annular groove (5062).
10. A modified core shooter for quicksand according to claim 1, characterized in that, The bottom of the sandblasting nozzle (2) is provided with a lifting platform (6), which is fixedly installed inside the machine base (1) and drives the sandblasting nozzle (2) and the transfer mechanism (5) to lift as a whole.