Sand shooting cylinder for vertical sand shooting molding machine
By installing an air intake component and a pneumatic vibration assembly inside the sand-shooting cylinder, the problems of sand flowability and atomization uniformity were solved, the sand-shooting effect was improved, and the casting quality of complex castings was ensured.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEBEI KAIEN ELECTROMECHANICAL EQUIP CO LTD
- Filing Date
- 2025-06-12
- Publication Date
- 2026-05-29
AI Technical Summary
The existing vertical sand-shooting molding machine has problems with poor uniformity of sand atomization in the sand-shooting cylinder, low sand flowability in the central area, and easy formation of sand clumps, which affects the sand-shooting effect.
An air intake component is fixed to the inner wall of the inner mesh cylinder of the sand-shooting cylinder and connected to a pneumatic vibration assembly. The airflow vibration is formed through the air pipe and the air-permeable mesh, which works together to improve the flowability and atomization effect of the molding sand.
It improves the fluidity and atomization uniformity of molding sand, ensuring that the molding sand is fully distributed in complex-shaped sand molds, thereby improving sand shooting efficiency and molding quality.
Smart Images
Figure CN224294645U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of vertical sand-shooting molding machines, and in particular to a sand-shooting cylinder for a vertical sand-shooting molding machine. Background Technology
[0002] Vertical sand-shooting molding machines are increasingly widely used in the casting industry. The sand-shooting cylinder is an important component of the vertical sand-shooting molding machine. It is a container used to temporarily store molding sand, and its main function is to shoot out the molding sand when needed.
[0003] The inventors believe that existing sand-shooting cylinders have poor uniformity in sand atomization, which cannot fully form an airflow suspension sand-shooting effect and cannot well meet the usage requirements.
[0004] For example, the applicant currently uses the sand-shooting cylinders in patents CN106424599B or CN106424598B (the sand-shooting cylinders in the two patents have the same structure). After the gas enters the main body of the sand storage cylinder, since there are no vent holes on the air inlet surface where the inner mesh cylinder and the air inlet cooperate, the gas can be effectively blocked. Then, the gas enters evenly through the vent holes in other positions of the inner mesh cylinder to atomize the sand. The uniform atomization ensures the atomization effect of the sand in the cylinder, thereby ensuring the sand-shooting effect. However, the inventors believe that the molding sand in the central area is far from the vent holes of the inner mesh cylinder, resulting in lower sand flowability and a tendency to form sand clumps, thus the sand-shooting effect needs to be improved.
[0005] Therefore, it is necessary to develop a sand-shooting cylinder for a vertical sand-shooting molding machine to address the aforementioned shortcomings. Utility Model Content
[0006] The purpose of this invention is to provide a sand-shooting cylinder for a vertical sand-shooting molding machine, which can improve the flowability of molding sand in the central area, thereby improving the sand-shooting effect.
[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0008] This utility model discloses a sand-shooting cylinder for a vertical sand-shooting molding machine, comprising an outer cylinder and an inner mesh cylinder inside the outer cylinder. The outer wall of the inner mesh cylinder is wrapped with a breathable mesh for blocking the passing of molding sand. An air inlet component is fixed on the inner wall, and the air inlet component is connected to the vent holes on the inner mesh cylinder. A pneumatic vibration component located in the central region of the inner mesh cylinder is fixed and connected to the air inlet component.
[0009] Optionally, the air intake component is a ring structure, and the outer circumference of the ring structure has an annular groove, which communicates with the air vent.
[0010] Optionally, the pneumatic vibration assembly includes an air pipe, one end of which is fixedly connected to the air inlet component and communicates with the annular groove; the end of the air pipe away from the air inlet component is sealed; the air pipe has multiple air outlets and an air-permeable mesh fixed to its outer wall to block the passing of the molding sand, and the air-permeable mesh is arranged corresponding to the air outlets.
[0011] Optionally, the air pipe includes an integrally formed guide tube section and a spiral tube section that are interconnected. One end of the guide tube section is fixedly connected to the air inlet component and communicates with the annular groove; the air outlet is opened on the spiral tube section.
[0012] Optionally, multiple air pipes are provided, and the multiple air pipes are evenly distributed around the central axis of the inner mesh cylinder.
[0013] Optionally, the outer wall of the inner ring of the ring structure is arc-shaped.
[0014] Compared with the prior art, the beneficial technical effects of this utility model are as follows:
[0015] This invention addresses the problem of low sand flowability and sand clumping in the central area of existing sand-shooting cylinders, which affects sand-shooting efficiency. It proposes fixing an air inlet component to the inner wall of the inner cylinder and connecting a pneumatic vibration assembly located in the central area of the inner cylinder to the air inlet component. On one hand, the airflow exiting from the air outlet disperses and vibrates the originally low-flowability, easily clumped sand; on the other hand, the vibration generated by the gas flow in the spiral section of the air pipe penetrates deep into the sand, breaking up particle adhesion and promoting full dispersion of the sand, thus greatly improving the flowability of the sand in the central area.
[0016] The vibration and the gas discharged from the vent work together. The vibration makes the molding sand particles more active, and the gas can penetrate the molding sand layer more easily, further enhancing the atomization effect and making the molding sand atomization more uniform and thorough. When making sand molds with complex shapes, it can smoothly fill every tiny corner of the mold, ensuring the molding quality of the sand mold and providing strong support for casting complex castings.
[0017] The excellent flowability and atomization effect of molding sand make the molding sand injection more stable and uniform, effectively avoiding molding sand clumping, reducing problems in the sand injection process, and thus improving sand injection efficiency. Attached Figure Description
[0018] The present invention will be further described below with reference to the accompanying drawings.
[0019] Figure 1 This is a cross-sectional structural diagram of the present invention;
[0020] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle.
[0021] Explanation of reference numerals in the attached drawings: 100, outer cylinder; 110, air inlet pipe; 120, air outlet pipe; 200, inner mesh cylinder; 210, vent hole; 300, air inlet component; 400, air pipe; 401, air outlet hole; 410, guide tube section; 420, spiral tube section; 500, breathable mesh. Detailed Implementation
[0022] The core of this utility model is to provide a sand-shooting cylinder for a vertical sand-shooting molding machine, which can improve the flowability of molding sand in the central area, thereby improving the sand-shooting effect.
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. 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.
[0024] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0025] In one specific embodiment of this utility model, such as Figure 1 and 2 As shown, the device includes an outer cylinder 100, inside which is an inner mesh cylinder 200. The outer wall of the inner mesh cylinder 200 is wrapped with a breathable mesh (which is prior art and not shown in the figure) to block the passing of molding sand. The top side wall of the outer cylinder 100 is connected to an air inlet pipe 110 for gas entry and an air outlet pipe 120 for gas discharge after sand injection. No vent holes 210 are provided on the surface of the inner mesh cylinder 200 that cooperates with the air inlet pipe 110. The above is prior art and will not be described in detail here. For other parts not detailed, please refer to the patents with publication number CN106424599B or CN106424598B.
[0026] This utility model, such as Figure 1 and 2 As shown, an air intake component 300 is fixed to the inner wall of the inner mesh cylinder 200, and the air intake component 300 is connected to the air vent 210 on the inner mesh cylinder 200; a pneumatic vibration component located in the central region of the inner mesh cylinder 200 is fixed and connected to the air intake component 300.
[0027] In one specific embodiment of this utility model, such as Figure 1 and 2 As shown, the air intake component 300 has a ring structure, and the outer circumference of the ring structure has an annular groove, which communicates with the vent hole 210. The air intake component 300 can be welded to the inner mesh cylinder 200 or bolted to it via a flange.
[0028] In one specific embodiment of this utility model, such as Figure 1 and 2 As shown, the pneumatic vibration assembly includes an air pipe 400. One end of the air pipe 400 is fixedly connected to the air inlet component 300 (e.g., by welding or flange bolt connection), and the air pipe 400 communicates with an annular groove. The end of the air pipe 400 away from the air inlet component 300 is sealed. Multiple air outlets 401 are provided on the air pipe 400. A permeable mesh 500 for blocking molding sand from passing through is fixed (e.g., by welding) to the outer wall of the air pipe 400, and the permeable mesh 500 is correspondingly arranged with the air outlets 401. The permeable mesh 500 and the permeable mesh are made of a mesh material that allows gas to pass through but not molding sand, which is a commonly used mesh material in molding machines and will not be described in detail here.
[0029] In one specific embodiment of this utility model, such as Figure 1 and 2 As shown, the air tube 400 includes an integrally formed guide tube section 410 and a spiral tube section 420 that are interconnected. One end of the guide tube section 410 is fixedly connected to the air inlet component 300 and communicates with the annular groove; the air outlet 401 is opened on the spiral tube section 420.
[0030] In one specific embodiment of this utility model, such as Figure 1 and 2 As shown, there are multiple air tubes 400 (in actual applications, 2, 3, 4 or more can be set according to the size of the inner mesh cylinder 200), and the multiple air tubes 400 are evenly distributed around the central axis of the inner mesh cylinder 200.
[0031] In one specific embodiment of this utility model, such as Figure 1 and 2 As shown, the outer wall of the inner ring of the ring structure is arc-shaped. This prevents some molding sand from remaining at the top of the air inlet component 300, which would prevent the molding sand from being completely discharged.
[0032] The working principle of the sand-shooting cylinder for a vertical sand-shooting molding machine according to this utility model is as follows: After the gas enters the outer cylinder 100 through the air inlet pipe 110, since there are no vent holes 210 on the surface where the inner mesh cylinder 200 and the air inlet pipe 110 meet, the gas is blocked in the space between the outer wall of the inner mesh cylinder 200 and the inner wall of the outer cylinder 100. Then the gas enters the interior of the inner mesh cylinder 200 through the vent mesh and the vent holes 210 at other locations of the inner mesh cylinder 200, atomizing the molding sand.
[0033] At the same time, the gas enters the air pipe 400 fixedly connected to the air intake component 300 through the annular groove on the air intake component 300, and the gas is discharged from the air outlet 401 opened on the air pipe 400 and through the breathable mesh 500.
[0034] The gas discharged from the vent 401 acts directly on the molding sand in the central area of the inner mesh cylinder 200, causing the molding sand in the central area, which originally had low fluidity and was prone to forming sand clumps, to be blown away and vibrated under the action of the airflow, thereby improving its fluidity.
[0035] When gas flows within the spiral tube section 420 of the gas pipe 400, its flow direction constantly changes, generating uneven impact forces on the inner wall of the spiral tube section 420. The changes in gas velocity and direction create periodically varying pressure on the tube wall. This periodic pressure fluctuation causes vibration in the spiral tube section 420, which is directly transmitted to the molding sand in the central area of the inner mesh cylinder 200, further enhancing the disturbance effect on the molding sand. Compared to simply relying on the airflow impact generated by gas exiting through the vent 401, this vibration penetrates deep into the molding sand, breaking down the adhesion between sand particles and allowing the originally tightly aggregated sand particles to disperse more fully, greatly improving the flowability of the molding sand.
[0036] The vibration works synergistically with the gas discharged from the vent 401. The vibration activates the molding sand particles, allowing the gas to penetrate the sand layer more easily and further enhancing the atomization effect. This synergistic effect not only improves the uniformity of the molding sand's flowability but also makes the sand more stable and uniform during injection, increasing injection efficiency. When creating sand molds with complex shapes, the molding sand in the central area needs good flowability to fill every tiny corner of the mold; the vibration of the spiral tube 420 helps ensure the uniform distribution of molding sand in these complex structures.
[0037] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably, and the embodiments can be combined with each other. For the apparatus disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the method section.
[0038] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.
Claims
1. A sand-shooting cylinder for a vertical sand-shooting molding machine, comprising an outer cylinder (100), wherein an inner mesh cylinder (200) is disposed inside the outer cylinder (100), and a breathable mesh for blocking the passage of molding sand is wound on the outer wall of the inner mesh cylinder (200), characterized in that, An air intake component (300) is fixed to the inner wall of the inner mesh cylinder (200), and the air intake component (300) is connected to the vent hole (210) on the inner mesh cylinder (200); a pneumatic vibration component located in the central region of the inner mesh cylinder (200) is fixed and connected to the air intake component (300).
2. The sand-shooting cylinder for a vertical sand-shooting molding machine according to claim 1, characterized in that: The air intake component (300) has a ring structure, and the outer circumference of the ring structure has an annular groove, which is connected to the air vent (210).
3. The sand-shooting cylinder for a vertical sand-shooting molding machine according to claim 2, characterized in that: The pneumatic vibration assembly includes an air pipe (400), one end of which is fixedly connected to the air inlet component (300), and the air pipe (400) communicates with the annular groove; the end of the air pipe (400) away from the air inlet component (300) is sealed; the air pipe (400) is provided with a plurality of air outlets (401), and a breathable mesh (500) for blocking the passing of the molding sand is fixed on the outer wall of the air pipe (400), and the breathable mesh (500) is correspondingly arranged with the air outlets (401).
4. The sand-shooting cylinder for a vertical sand-shooting molding machine according to claim 3, characterized in that: The air pipe (400) includes an integrally formed guide pipe section (410) and a spiral pipe section (420) that are interconnected. One end of the guide pipe section (410) is fixedly connected to the air inlet component (300) and communicates with the annular groove. The air outlet (401) is opened on the spiral pipe section (420).
5. The sand-shooting cylinder for a vertical sand-shooting molding machine according to claim 3 or 4, characterized in that: The air pipes (400) are provided in multiple ways, and the multiple air pipes (400) are evenly distributed around the central axis of the inner mesh cylinder (200).
6. The sand-shooting cylinder for a vertical sand-shooting molding machine according to claim 2, characterized in that: The outer wall of the inner ring of the ring structure is arc-shaped.