A pincer body without riser casting model structure

Abstract

The utility model discloses a kind of model structures of casting without riser of tongs, comprising: funnel-shaped sprue cup lower surface intercommunication installation has vertical gate, the lower surface of vertical gate is provided with gate nest, the outer surface one end of gate nest intercommunication installation has slag collecting block, the one end of slag collecting block intercommunication installation has filter slag piece, the one end of slag collecting block intercommunication installation has N-shaped gate, two ends of N-shaped gate include main gate and branch gate, main gate and branch gate are communicated to the cavity of casting.The application is designed through vertical gate, gate nest, filter slag piece and N-shaped gate, through the coherent working procedure of "flow guide-buffering-filtering-distribution-feeding", the orderly flow and efficient utilization of metal liquid whole process are realized, and riser design, manufacturing and subsequent cutting process are saved, without additional investment manpower and equipment to handle riser, substantially reduce production link, shorten casting cycle, significantly improve overall work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of riserless casting model technology, specifically a clamp-body riserless casting model structure. Background Technology

[0002] In the casting industry, casting technology is an indispensable and crucial key technology. The entire casting process and process design revolve around the two core objectives of "improving product quality" and "reducing production costs". Shrinkage defects, as one of the most important quality indicators of cast products, directly affect the structural strength, density and service life of castings. Therefore, solving shrinkage defects is the core direction of casting process optimization. Thus, a clamp-body riserless casting model structure is proposed to solve the problems of high cost, low efficiency and high pollution caused by riser feeding in traditional clamp-body casting. Utility Model Content

[0003] The purpose of this invention is to provide a riserless casting model structure for clamp bodies, in order to solve the problems mentioned in the background art, such as low metal utilization, high production cost, cumbersome and inefficient production process, and environmental pollution caused by riser removal, which are caused by the reliance on risers for feeding in traditional clamp body casting.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A riserless casting mold structure includes: a funnel-shaped pouring cup with a vertical sprue connected to its lower surface; a sprue recess on the lower surface of the vertical sprue; a slag collection block connected to one end of the outer surface of the sprue recess; a filter plate connected to one end of the slag collection block; and a U-shaped sprue connected to one end of the slag collection block. The U-shaped sprue includes a main sprue and a branch sprue at both ends, and the main sprue and the branch sprue are connected to the mold cavity of the casting.

[0006] Preferably, the funnel-shaped pouring cup (1) is a cone structure with a bottom diameter of 40mm, a top diameter of 140mm, and a height of 70mm. Its inner wall is polished smooth without sharp edges. Through the cone structure design that is wider at the top and narrower at the bottom, the molten metal is guided to naturally converge and flow to the vertical gating channel under the action of gravity, avoiding the molten metal from stagnating or splashing in the pouring cup.

[0007] Preferably, the vertical gating system is a cylindrical structure with a diameter of 40mm and a height of 180mm, made of high-temperature resistant refractory material. Its axis is collinear with the axis of the funnel-shaped pouring cup, and the top of the vertical gating system is seamlessly connected to the bottom outlet of the funnel-shaped pouring cup. The bottom end is tightly fitted to the circular interface opened on the upper surface of the gating socket, ensuring vertical and stable delivery of molten metal without leakage or flow turbulence.

[0008] Preferably, the gating recess is a cylindrical cavity structure with a diameter of 40mm and a height of 50mm, made of the same material as the vertical gating and coaxially arranged. Its inner wall is treated with a rounded transition. A rectangular interface adapted to the slag collecting block is opened at one end of the gating recess near the slag collecting block. The edge of the interface is polished smooth to receive the molten metal flowing down from the vertical gating. The cavity buffers and slows down the flow rate of the molten metal, so that the liquid flow state tends to be stable before being transported to the slag collecting block.

[0009] Preferably, the slag collecting block is a cubic structure of 24×24×35mm, and the slag filter is a cubic porous ceramic filter structure of 50×50×15mm. The slag filter is embedded in the connection between the slag collecting block and the U-shaped gating. When the molten metal flows through the slag collecting block, the slag filter can block solid impurities such as molten slag and sand particles. The filtered impurities are retained in the internal cavity of the slag collecting block, preventing impurities from entering the U-shaped gating with the molten metal and affecting the quality of the casting.

[0010] Preferably, the main gating system of the U-shaped gating system has a cross-sectional area of ​​525 mm². 2 The structure is a trapezoidal cube with a height of 24mm. The branch gating system comprises two sections, each with a cross-sectional area of ​​430mm². 2 Height 24mm and cross-sectional area 265mm² 2 The trapezoidal cubic structure with a height of 18mm ensures uniform distribution and stable flow of molten metal into the mold cavity through the trapezoidal cross-section design. At the same time, the liquid metal remaining in the main gating and branch gating can achieve riser-free feeding when the casting solidifies and shrinks.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] Through the coordinated design of various components, the quality of castings can be improved by stable flow guidance and efficient filtration. At the same time, the traditional process can be replaced by riserless feeding, which reduces metal waste and production costs, eliminates riser-related processes and removes cutting pollution, and achieves simultaneous optimization of casting production in terms of quality, efficiency and environmental protection. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the riserless casting model of the clamp body of this utility model;

[0014] Figure 2 This is a schematic diagram of the overall side view of the present invention.

[0015] Figure 3 This is a top view of the overall structure of this utility model.

[0016] In the diagram: 1. Funnel-shaped pouring cup; 2. Vertical runner; 3. Runner recess; 4. Slag collection block; 5. Filter slag sheet; 6. U-shaped runner; 7. Main runner; 8. Casting; 9. Branch runner. Detailed Implementation

[0017] 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.

[0018] Please see Figures 1-3 This embodiment provides the following technical solution:

[0019] like Figures 1-3 As shown, a clamp-shaped riserless casting model structure includes: a vertical sprue 2 connected to the lower surface of a funnel-shaped pouring cup 1; a sprue recess 3 provided on the lower surface of the vertical sprue 2; a slag collection block 4 connected to one end of the outer surface of the sprue recess 3; a filter slag sheet 5 connected to one end of the slag collection block 4; a U-shaped sprue 6 connected to one end of the slag collection block 4; and a main sprue 7 and a branch sprue 9 at both ends of the U-shaped sprue 6, the main sprue 7 and the branch sprue 9 connecting to the cavity of the casting 8.

[0020] Among them, the funnel-shaped pouring cup 1 is a cone structure with a bottom diameter of 40mm, a top diameter of 140mm, and a height of 70mm. Its inner wall is polished smooth without any sharp edges. Through the cone-shaped structure design that is wider at the top and narrower at the bottom, the molten metal is guided to naturally converge and flow to the vertical gating channel 2 under the action of gravity, thus avoiding the molten metal from stagnating or splashing in the pouring cup.

[0021] The vertical gating 2 is a cylindrical structure with a diameter of 40mm and a height of 180mm, made of high-temperature resistant refractory material. Its axis is collinear with the axis of the funnel-shaped pouring cup 1. The top of the vertical gating 2 is seamlessly connected to the bottom outlet of the funnel-shaped pouring cup 1, and the bottom end is tightly fitted to the circular interface opened on the upper surface of the gating socket 3, ensuring the vertical and stable delivery of molten metal without leakage or flow turbulence.

[0022] Among them, the sprue pit 3 is a cylindrical cavity structure with a diameter of 40mm and a height of 50mm. It is made of the same material as the vertical sprue 2 and is coaxially set. Its inner wall is treated with a rounded transition. A rectangular interface adapted to the slag collection block 4 is opened at one end of the sprue pit 3 near the slag collection block 4. The edge of the interface is polished smooth to receive the molten metal flowing down from the vertical sprue 2. The cavity buffers and slows down the flow rate of the molten metal, so that the liquid flow state tends to be stable before being transported to the slag collection block 4.

[0023] The slag collection block 4 is a cubic structure of 24×24×35mm, and the filter slag plate 5 is a cubic porous ceramic filter structure of 50×50×15mm. The filter slag plate 5 is embedded in the connection between the slag collection block 4 and the U-shaped gating 6. When the molten metal flows through the slag collection block 4, the filter slag plate 5 can block solid impurities such as molten slag and sand particles. The filtered impurities are retained in the internal cavity of the slag collection block 4, preventing impurities from entering the U-shaped gating 6 with the molten metal and affecting the quality of the casting 8.

[0024] Among them, the main gating 7 of the U-shaped gating 6 has a cross-sectional area of ​​525mm². 2 The structure is a trapezoidal cube with a height of 24mm. It has two branch runners (9 in total), each with a cross-sectional area of ​​430mm². 2 Height 24mm and cross-sectional area 265mm² 2 The trapezoidal cubic structure with a height of 18mm ensures that the molten metal is evenly distributed and flows steadily into the cavity through the trapezoidal cross section design. At the same time, the liquid metal remaining in the main gating 7 and the branch gating 9 is used to achieve riser-free feeding when the casting 8 solidifies and shrinks.

[0025] Through the design of the funnel-shaped pouring cup 1, vertical sprue 2, sprue recess 3, slag collection block 4, slag filter 5, U-shaped sprue 6, main sprue 7, and branch sprue 9, when the molten metal is poured into the funnel-shaped pouring cup 1, its conical structure at the bottom and smooth, edgeless inner wall allow the molten metal to naturally converge towards the bottom outlet under gravity, avoiding stagnation and splashing. It then flows smoothly into the seamlessly connected vertical sprue 2. This stage requires no additional power, relying solely on gravity and structural design to achieve stable flow, reducing equipment maintenance costs. Simultaneously, it reduces porosity and cold shut defects in the casting 8 caused by air entrapment and uneven temperature, improving yield. Subsequently, the molten metal flows vertically down the cylindrical structure of the vertical sprue 2, entering the cylindrical cavity of the sprue recess 3. The rounded transition of its inner wall reduces the impact of the liquid flow, stabilizing the flow before it is transported to the slag collection block 4 through a rectangular interface. Improved flow stability reduces impact and wear on subsequent components, extending the model's lifespan. The service life is extended, and good conditions are created for the filtration process. The molten metal entering the cubic cavity of the slag collection block 4 then flows through the embedded porous ceramic filter slag sheet 5, which blocks and retains impurities in the slag collection block 4, allowing the pure molten metal to enter the U-shaped gating 6. This thoroughly removes harmful impurities, improves the structural strength and density of the casting 8, and the centralized cleaning of impurities by the slag collection block 4 simplifies the process. The pure molten metal is distributed through the U-shaped gating 6 and flows into the cavity of the casting 8 through the main gating 7 and the branch gating 9 respectively. After filling, the liquid metal retained in the main gating 7 and the branch gating 9 automatically feeds back the casting 8 during solidification and shrinkage due to gravity and negative pressure, achieving riser-free feeding. This replaces the traditional riser, eliminating related processes, reducing molten metal waste, lowering costs and increasing production capacity. At the same time, it eliminates the pollution caused by riser removal, which is in line with the trend of green manufacturing. It also avoids damage to the surface of the casting 8 and reduces the amount of subsequent grinding work.

[0026] Based on the above technical solution, the working steps of this solution are summarized as follows: After the molten metal is poured into the funnel-shaped pouring cup 1, it naturally converges towards the bottom outlet under the action of gravity, thanks to its conical structure and smooth, edgeless inner wall. It then flows smoothly into the vertical gating channel 2, allowing the molten metal to descend vertically along the cylindrical structure into the cylindrical cavity of the gating socket 3. The flow rate is slowed by the cavity buffer and the rounded transition of the inner wall. After the liquid flow stabilizes, it is discharged through the rectangular interface near the slag collection block 4 at the end of the gating socket 3. When the molten metal is fed to the slag collection block 4, the porous ceramic filter 5 inside the slag collection block 4 will intercept impurities such as molten slag and sand particles. The impurities are retained in the slag collection block 4, while the pure molten metal enters the U-shaped gating 6 and flows into the cavity of the casting 8 through the main gating 7 and the branch gating 9 respectively. After the cavity is filled, the liquid metal remaining in the main gating 7 and the branch gating 9 will automatically flow to the shrinkage part to fill the gap when the casting 8 solidifies and shrinks due to the combined effect of gravity and the negative pressure inside the casting, thus achieving riser-free feeding.

[0027] In summary, by following the sequential steps of "flow guidance, buffering, filtering, distribution, and feeding," the orderly flow and efficient utilization of molten metal throughout the entire process are achieved. Furthermore, the design, fabrication, and subsequent removal of risers are eliminated, and no additional manpower or equipment is required to handle risers. This significantly reduces production steps, shortens the casting cycle, and substantially improves overall work efficiency.

[0028] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pincer body without riser casting mold structure, characterized by, include: The lower surface of the funnel-shaped pouring cup (1) is connected to a vertical sprue (2), and the lower surface of the vertical sprue (2) is provided with a sprue recess (3). One end of the outer surface of the sprue recess (3) is connected to a slag collection block (4), one end of the slag collection block (4) is connected to a filter slag sheet (5), and one end of the slag collection block (4) is connected to a U-shaped sprue (6). The two ends of the U-shaped sprue (6) include a main sprue (7) and a branch sprue (9). The main sprue (7) and the branch sprue (9) are connected to the cavity of the casting (8).

2. The riserless casting mold structure for clamp body according to claim 1, characterized in that: The funnel-shaped pouring cup (1) is a cone structure with a bottom diameter of 40mm, a top diameter of 140mm, and a height of 70mm. Its inner wall is polished smooth without any sharp edges. Through the cone structure design that is wider at the top and narrower at the bottom, the molten metal is guided to naturally converge and flow to the vertical gating channel (2) under the action of gravity, thus avoiding the molten metal from stagnating or splashing in the pouring cup.

3. The tongs body without riser casting model structure according to claim 1, characterized in that: The vertical gating channel (2) is a cylindrical structure with a diameter of 40 mm and a height of 180 mm. It is made of high-temperature resistant refractory material. Its axis is collinear with the axis of the funnel-shaped pouring cup (1). The top of the vertical gating channel (2) is seamlessly connected to the bottom outlet of the funnel-shaped pouring cup (1), and the bottom end is tightly fitted with the circular interface opened on the upper surface of the gating channel socket (3) to ensure vertical and stable delivery of molten metal without leakage or flow disorder.

4. The tongs body without riser casting model structure according to claim 1, characterized in that: The sprue recess (3) is a cylindrical cavity structure with a diameter of 40 mm and a height of 50 mm. It is made of the same material as the vertical sprue (2) and is coaxially arranged. Its inner wall is treated with a rounded transition. The end of the sprue recess (3) near the slag collection block (4) has a rectangular interface that is compatible with the slag collection block (4). The edge of the interface is polished smooth to receive the molten metal flowing down from the vertical sprue (2). The cavity buffers and slows down the flow rate of the molten metal, so that the liquid flow state tends to be stable before being transported to the slag collection block (4).

5. The tongs body without riser casting model structure according to claim 1, characterized in that: The slag collection block (4) is a cubic structure of 24×24×35mm, and the filter slag plate (5) is a cubic porous ceramic filter structure of 50×50×15mm. The filter slag plate (5) is embedded in the connection between the slag collection block (4) and the U-shaped gating (6). When the molten metal flows through the slag collection block (4), the filter slag plate (5) can block molten slag, sand particles and solid impurities. The filtered impurities are retained in the cavity inside the slag collection block (4) to prevent impurities from entering the U-shaped gating (6) with the molten metal and affecting the quality of the casting (8).

6. A tongs body without riser casting model structure according to any one of claims 1-5, characterized in that: The main gating (7) of the U-shaped gating (6) is a trapezoidal cubic structure with a cross-sectional area of ​​525 mm² and a height of 24 mm. The branch gating (9) includes two trapezoidal cubic structures with a cross-sectional area of ​​430 mm² and a height of 24 mm and a cross-sectional area of ​​265 mm² and a height of 18 mm, respectively. The trapezoidal cross-section design ensures that the molten metal is evenly distributed and flows stably into the mold cavity. At the same time, the liquid metal remaining in the main gating (7) and the branch gating (9) is used to achieve riser-free feeding when the casting (8) solidifies and shrinks.

Images