A molding line pouring system

Abstract

This utility model relates to a casting system for a molding line, including a main gating cavity, a horizontal gating cavity, a vertical gating cavity, a connecting gating cavity, a riser cavity, and a filter. The vertical gating cavity has a pouring cup cavity at its upper part. One end of the connecting gating cavity is connected to the lower part of the vertical gating cavity, and the other end is connected to one end of the main gating cavity. One end of the horizontal gating cavity is connected to the other end of the main gating cavity and is vertically arranged. The other end of the horizontal gating cavity is connected to one side of the riser cavity, and the other side of the riser cavity is connected to the casting product. The connecting gating cavity has a chamber for accommodating the filter. The two side walls of the chamber along the extension direction of the main gating cavity extend upwards at an angle away from the vertical gating cavity from their respective bottoms to their tops. In the system provided by this utility model, the force of the molten iron flow causes the filter to adhere tightly to the bottom and side walls of the chamber, ensuring the purity of the molten iron. Simultaneously, the turbulent molten iron becomes laminar flow after passing through the filter, and its velocity is reduced, minimizing slag porosity defects.

Description

Technical Field

[0001] This utility model relates to a molding line casting system. Background Technology

[0002] Due to their high product precision, high production efficiency, safety, and environmental friendliness, casting molding lines are widely used in the foundry industry and have gradually become the mainstream equipment. However, the gating system of molding lines faces the following challenges: 1. The casting system is generally carried out by the mold sand. When the hot iron comes into contact with the mold sand during casting, the heat will be quickly carried away by the mold sand, resulting in heat loss of the iron. This is manifested as a decrease in the temperature of the flowing iron, which leads to a low product temperature and cold shut defects. 2. The molten iron at high temperature is filled with a large amount of oxide slag. If this oxide slag is not blocked before entering the product cavity, the product will have serious quality problems. At present, the filter disc is horizontally set in the filter disc mold cavity. Due to the gap between the filter disc and the filter disc mold cavity (a certain gap must be placed, otherwise the filter disc cannot be put in and it is easy to rub sand when putting in the filter disc), the filter disc cannot be completely fixed. When the molten iron is poured in, the filter disc is easy to move under the action of the molten iron. Some molten iron can easily flow through the gap on the side of the filter disc and cannot play a filtering role. The slag in the molten iron has the opportunity to flow smoothly into the product cavity, which will eventually cause product defects. 3. Due to the high pressure head of the molding line, the molten iron will move very fast under the action of gravity. The high flow rate will bring serious turbulence. The molten iron will churn rapidly in the mold cavity. The high temperature of the molten iron will oxidize rapidly when it comes into contact with the air in the mold cavity, producing defects such as oxide slag. 4. Traditional horizontal runners are generally made into trapezoids, for example, with a length-to-height ratio of 2:1. This design has poor heat preservation effect, and the molten iron loses more heat from the pouring cup cavity to the mold cavity. This means that a thicker runner is needed to ensure the temperature of the molten iron that finally enters the product cavity, thereby reducing the product yield. 5. Because the molding line produces products of many different materials, the traditional gating system often cannot identify the material after separation, resulting in recycled materials and mixing, which brings many problems to the subsequent melting process. Utility Model Content

[0003] The purpose of this invention is to provide a stable and efficient molding line casting system.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A molding line gating system includes an upper mold and a lower mold. After mold closing, the inner walls of the upper and lower molds, facing each other, form a sand cavity. The sand cavity includes a main runner cavity, a horizontal runner cavity, a vertical runner cavity, a connecting runner cavity, and a riser cavity. A sprue cup cavity is provided at the upper part of the vertical runner cavity. One end of the connecting runner cavity is connected to the lower part of the vertical runner cavity, and the other end of the connecting runner cavity is connected to one end of the main runner cavity. One end of the horizontal runner cavity is connected to the... The other end of the main gating cavity is connected and vertically arranged. The extension direction of the main gating cavity is perpendicular to the extension direction of the vertical gating cavity. The other end of the horizontal gating cavity is connected to one side of the riser cavity. The other side of the riser cavity is connected to the casting product. The connected gating cavity has a chamber. A filter is arranged in the chamber. The chamber extends upward at an angle away from the vertical gating cavity from the bottom to the top of its opposite side walls along the extension direction of the main gating cavity.

[0005] According to some embodiments of this utility model, the angle between the inclination direction of the cavity of the connecting gating sprue and the extension direction of the vertical gating sprue is 1-10°.

[0006] According to some embodiments of this utility model, the vertical runner cavity includes a main body cavity and a connecting cavity that are sequentially connected along the axial direction of the vertical runner cavity. The main body cavity is cylindrical, one end of the main body cavity is connected to the pouring cup cavity, the other end of the main body cavity is connected to the connecting cavity, the connecting cavity is connected to the connecting runner cavity, and the width of the connecting cavity is greater than the width of the main body cavity.

[0007] According to some embodiments of this utility model, the front and rear ends of the connecting cavity are provided with protruding cavities that protrude away from each other, and the protruding direction of the protruding cavities is perpendicular to the extension direction of the main gating cavity.

[0008] According to some embodiments of this utility model, a first transition cavity is provided between the connecting cavity and the connecting runner cavity, and the radial direction of the opening of the first transition cavity increases as it approaches the connecting runner cavity.

[0009] According to some embodiments of this utility model, a second transition cavity is provided between the main runner cavity and the connecting runner cavity. One end of the second transition cavity is connected to the connecting runner cavity, and the other end of the second transition cavity is connected to the main runner cavity. The width of one end of the second transition cavity is greater than the width of the other end of the second transition cavity.

[0010] According to some embodiments of this utility model, the vertical gating cavity is provided with the connecting gating cavity on the left and right sides respectively, the other end of the two connecting gating cavities is provided with the main gating cavity, and the front and rear sides of the main gating cavity are provided with the horizontal gating cavity.

[0011] According to some embodiments of the present invention, the connecting runner cavity includes a runner body cavity and a fixing part cavity disposed on the runner body cavity, wherein a chamber for accommodating the filter sheet is formed between the fixing part cavity and the runner body cavity.

[0012] According to some embodiments of this utility model, the cross-sections of the main gating cavity and the horizontal gating cavity are both circular.

[0013] According to some embodiments of this utility model, the diameter of the main gating cavity is larger than the diameter of the horizontal gating cavity.

[0014] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: The molding line casting system provided by this utility model has an inclined sidewall in the cavity of the connecting channel. The flow force of the molten iron causes the filter to tilt away from the main gating cavity, so that the filter is tightly attached to the bottom wall of the cavity and the sidewall away from the main gating cavity. The molten iron flowing into the product cavity is completely filtered by the filter, ensuring the purity of the molten iron. At the same time, due to the rectification effect of the filter, the turbulent molten iron becomes laminar flow after passing through the filter, and the velocity will also decrease sharply, reducing the generation of slag porosity defects. Attached Figure Description

[0015] Appendix Figure 1 A structural diagram of the molding line casting system provided by this utility model after casting, viewed from the first perspective. Appendix Figure 2 A structural diagram from a second perspective after casting of the molding line casting system provided by this utility model; Appendix Figure 3 A structural diagram from a third-person perspective of the casting system for the molding line provided by this utility model after casting; Appendix Figure 4 A cross-sectional view of the connecting runner after casting using the molding line casting system provided by this utility model; Appendix Figure 5 A cross-sectional view of the gating cup cavity, the vertical runner cavity, and the connecting runner of the molding line gating system provided by this utility model; Appendix Figure 6 For the appendix Figure 5 Enlarged view of the cavity of the central connecting runner; Appendix Figure 7 A cross-sectional view of the molding line gating system provided by this utility model; Appendix Figure 8 This is a structural diagram of the lower cavity after molding; Appendix Figure 9 This is a structural diagram of the lower cavity after molding; Appendix Figure 10 This is a structural diagram of the upper cavity after shaping.

[0016] In the attached diagrams above: 1-Main runner cavity, 1'-Main runner; 2-Sprue cavity, 2'-Sprue; 3-Vertical sprue cavity, 31-Main body cavity, 32-Connecting part cavity, 321-Protruding part cavity; 31'-Main body, 32'-Connecting part, 321'-Protruding part; 4-Riser cavity; 4'-Riser; 5-Filter plate; 6-Connecting runner cavity, 61-Fixing part cavity, 62-Runner body cavity, 63-Bottom wall of the chamber connecting the runner cavity, 64-Side wall of the chamber connecting the runner cavity; 61'-Fixing part, 62'-Runner body; 7'-First transition section; 8-Sprue cup cavity, 8'-Sprue cup; 9-Upper mold; 10-Lower mold; 11-Product cavity, 11'-Casting product; 12-Material code; 13-Second transition section cavity, 13'-Second transition section. Detailed Implementation

[0017] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0018] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] See Figures 5 to 10The molding line gating system shown includes an upper mold 9 and a lower mold 10. The upper mold 9 is located above the lower mold 10. After the molds are closed, a sand cavity is formed between the inner walls of the upper mold 9 and the lower mold 10. Specifically, the inner wall of the upper mold 9 facing the lower mold 10 has a first sand cavity, and the inner wall of the lower mold 10 facing the upper mold 9 has a second sand cavity. When the upper mold 9 and the lower mold 10 are closed, the first sand cavity and the second sand cavity are opposite each other to form a sand cavity. The sand cavity includes a main runner cavity 1, a horizontal runner cavity 2, a vertical runner cavity 3, a connecting runner cavity 6, a riser cavity 4, and a product cavity 11 that forms the casting product. The upper part of the vertical runner cavity 3 is provided with a pouring cup cavity 8. One end of the runner cavity 6 is connected to the lower part of the vertical runner cavity 3, and the other end of the runner cavity 6 is connected to one end of the main runner cavity 1. One end of the horizontal runner cavity 2 is connected to the other end of the main runner cavity 1 and is set vertically. The other end of the horizontal runner cavity 2 is connected to one side of the riser cavity 4. The other side of the riser cavity 4 is connected to the casting product 9. The vertical runner cavity 3 extends along the Z-axis, the main runner cavity 1 extends along the X-axis, and the horizontal runner cavity 2 extends along the Y-axis.

[0020] In this example, the connecting runner cavity 6 has a chamber for accommodating the filter 5. The filter 5 is cuboid in shape, and the inner contour of the chamber matches the outer contour of the filter 5. See [reference needed]. Figure 5 The chamber has a left side wall and a right side wall, a front side wall and a rear side wall, and a top wall and a bottom wall that are arranged opposite to each other. The left side wall and the right side wall are distributed along the extension direction of the main gating cavity (the flow direction of molten iron in the connecting gating cavity and the main gating cavity). The left side wall extends upward from its bottom to its top in a direction away from the vertical gating cavity 3 (i.e., the flow direction of molten iron in the connecting gating cavity and the main gating cavity). The right side wall extends upward from its bottom to its top in a direction away from the vertical gating cavity 3. The left side wall and the right side wall are inclined in the same direction. The top wall extends downward from the end near the vertical gating cavity to the end away from the vertical gating cavity.

[0021] The filter element 5 is inclinedly disposed within the cavity communicating with the gating cavity 6. This inclined cavity arrangement ensures that when the filter element 5 enters the cavity, its outer sidewall contacts the inner sidewall of the cavity. (See [reference]). Figure 5-6The top and bottom walls of the filter plate 5 on the left side are tightly attached to the top and bottom walls 63 of the chamber, respectively. The left and right walls of the filter plate 5 are tightly attached to the left and right walls 64 and 64 of the chamber, respectively. The front and rear walls of the filter plate 5 are tightly attached to the front and rear walls of the chamber, respectively. When molten iron flows from the gating cup cavity 8, the vertical gating cavity 3, and the connecting gating cavity 6 and passes through the filter plate 5, the flow force of the molten iron causes the filter plate 5 to tilt away from the vertical gating cavity 3. This causes the filter plate 5 to be tightly attached to the bottom wall 63 of the chamber and the side wall (left wall 64 or right wall) away from the vertical gating cavity 3. In this way, the molten iron flowing into the product chamber is completely filtered by the filter plate 5, ensuring the purity of the molten iron. At the same time, due to the rectifying effect of the filter plate 5, the turbulent molten iron becomes laminar flow after passing through the filter plate 5, and the velocity will also decrease sharply, reducing the generation of slag defects. After pouring, the outer side of the bottom wall 63 of the chamber connecting the gating cavity 6 is shown in the figure. Figure 2 a.

[0022] In this example, filter 5 is a foam ceramic filter 5, which is cuboid in shape.

[0023] In some embodiments, the angle between the inclined direction of the cavity of the connecting gating cavity 6 and the vertical direction is 1-10°, preferably 1-5°.

[0024] Furthermore, the connecting runner cavity 6 includes a runner body cavity 62 and a fixing cavity 61 disposed on the runner body cavity 62. A chamber for accommodating the filter sheet 5 is formed between the fixing cavity 61 and the runner body cavity 62. After molding, the fixing cavity 61 forms a sand-pressing ring, and the fixing cavity 61 contacts the top of the filter sheet 5, thereby completely fixing and surrounding the filter sheet 5, facilitating the complete filtration of molten iron flowing into the product cavity by the filter sheet 5. See also Figure 1-3 After pouring, the connecting runner cavity 6 forms the connecting runner, the fixing cavity 61 forms the fixing part 61', and the runner body cavity 62 forms the runner body 62'.

[0025] In some embodiments, the upper side of the fixing cavity 61 is provided with a groove that is recessed toward the gating body cavity 62. The groove extends in a direction perpendicular to the main gating cavity 1 and has a V-shaped cross section.

[0026] In this example, the vertical runner cavity 3 includes a main body cavity 31 and a connecting cavity 32 connected sequentially along the axial direction of the vertical runner cavity 3. One end of the main body cavity 31 is connected to the pouring cup cavity 8, and the other end of the main body cavity 31 is connected to the connecting cavity 32. The connecting cavity 32 is connected to the connecting runner cavity 6. The main body cavity 31 is cylindrical, and the width of the connecting cavity 32 (the length along the direction perpendicular to the extension direction of the main runner cavity 1) is greater than the width (diameter) of the main body cavity 31. This ensures that the molten iron poured into the connecting runner cavity 6 through the vertical runner cavity 3 has space to be stored, and also increases the usable area of ​​the filter plate 5. See also Figure 1-3 After casting, the main body cavity 31 forms the main body 31', and the connecting cavity 32 forms the connecting part 32'.

[0027] In a preferred embodiment, both the front and rear ends of the connecting cavity 32 are provided with protruding cavities 321 that protrude away from each other. The protruding direction of the protruding cavities 321 is perpendicular to the extending direction of the main gating cavity 1. The lower space of the vertical gating cavity 3 has a large volume, providing sufficient space for storing the poured molten iron. See also Figure 4 After casting, the protruding cavity 321 forms the protruding part 321'.

[0028] Furthermore, a first transition cavity is provided between the connecting cavity 32 and the connecting runner cavity 6. The opening of the first transition cavity increases radially towards the connecting runner cavity 6, ensuring that there is space to store molten iron before it passes through the filter 5, allowing a larger amount of molten iron to pass through the filter 5, and also increasing the usable area of ​​the filter 5. See also Figure 4 After casting, the first transition cavity forms the first transition section 7'.

[0029] In some embodiments, a second transition cavity 13 is provided between the main gating cavity 1 and the connecting gating cavity 6. One end of the second transition cavity 13 is connected to the connecting gating cavity 6, and the other end of the second transition cavity 13 is connected to the main gating cavity 1. The width of one end of the second transition cavity 13 is greater than the width of the other end, approximately 5 mm greater. The other end of the second transition cavity 13 is circular, and its diameter is the same as the diameter of the main gating cavity 1. Molten iron flows through the connecting gating cavity 6 and the second transition cavity 13 to the horizontal gating cavity 2, achieving smooth mixing with the horizontal gating cavity 2 and ensuring smooth flow of molten iron. See also Figure 4 After casting, the second transition cavity 13 forms the second transition section 13'.

[0030] In this example, after the molten iron is poured, the main runner cavity 1 forms the main runner 1', the horizontal runner cavity 2 forms the horizontal runner 2', the vertical runner cavity 3 forms the vertical runner, the riser cavity 4 forms the riser 4', the pouring cup cavity 8 forms the pouring cup 8', and the product cavity 11 forms the casting product 11'.

[0031] In some embodiments, connecting gating cavities 6 are respectively provided on the left and right sides of the vertical gating cavity 3. The chambers of the two connecting gating cavities 6 each contain filter plates 5. The two filter plates 5 extend upwards at an angle away from each other. The other end of the two connecting gating cavities 6 is provided with a main gating cavity 1. The front and rear sides of the main gating cavity 1 are provided with horizontal gating cavities 2. The other end of the horizontal gating cavity 2 is connected to the riser cavity 4. One side of each riser cavity 4 is connected to the product cavity 11. The two main gating cavities 1, the four horizontal gating cavities 2 and the two connecting gating cavities 6 form an H shape. After casting, four casting products 11' can be obtained.

[0032] In some embodiments, the cross-sections of both the main gating cavity 1 and the horizontal gating cavity 2 are circular. Under the same modulus, the circular structure allows for the smallest volume of molten iron to pass through, thereby reducing the amount of molten iron used and increasing the product yield. Preferably, the diameter of the main gating cavity 1 is larger than the diameter of the horizontal gating cavity 2, which is beneficial for forming a larger number of casting products 9.

[0033] In this example, the gating system is provided with material code 10 to facilitate material identification during cleaning and reduce management difficulty. In some embodiments, the main gating cavity 1 is provided with material code 10 on the end face away from the gating cup cavity, and the bottom surface of the riser cavity 4 is provided with material code 10.

[0034] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A molding line pouring system, characterized by, The system includes an upper mold and a lower mold. After mold closing, the inner walls of the upper and lower molds, facing each other, form a sand cavity. This sand cavity includes a main runner cavity, a horizontal runner cavity, a vertical runner cavity, a connecting runner cavity, a riser cavity, and a product cavity forming the casting. A pouring cup cavity is located at the upper part of the vertical runner cavity. One end of the connecting runner cavity is connected to the lower part of the vertical runner cavity, and the other end of the connecting runner cavity is connected to one end of the main runner cavity. One end of the horizontal runner cavity is connected to... The other end of the main runner cavity is connected and vertically arranged. The extension direction of the main runner cavity is perpendicular to the extension direction of the vertical runner cavity. The other end of the horizontal runner cavity is connected to one side of the riser cavity. The other side of the riser cavity is connected to the product cavity. The connecting runner cavity has a chamber. A filter is arranged in the chamber. The chamber extends upward at an angle away from the vertical runner cavity from its bottom to its top along the opposite side walls of the main runner cavity extension direction.

2. The molding line pouring system of claim 1, wherein, The angle between the inclination direction of the cavity of the connecting gating sprue and the extension direction of the vertical gating sprue is 1-10°.

3. The molding line pouring system of claim 1, wherein, The vertical runner cavity includes a main body cavity and a connecting cavity that are sequentially connected along the axial direction of the vertical runner cavity. The main body cavity is cylindrical, one end of the main body cavity is connected to the sprue cup cavity, the other end of the main body cavity is connected to the connecting cavity, the connecting cavity is connected to the connecting runner cavity, and the width of the connecting cavity is greater than the width of the main body cavity.

4. The molding line pouring system of claim 3, wherein, The front and rear ends of the connecting cavity are provided with protruding cavities that protrude away from each other, and the protruding direction of the protruding cavities is perpendicular to the extension direction of the main gating cavity.

5. The molding line gating system according to claim 3, characterized in that, A first transition cavity is provided between the connecting cavity and the connecting runner cavity, and the radial direction of the opening of the first transition cavity increases as it approaches the connecting runner cavity.

6. The molding line pouring system of claim 1, wherein, A second transition cavity is provided between the main runner cavity and the connecting runner cavity. One end of the second transition cavity is connected to the connecting runner cavity, and the other end of the second transition cavity is connected to the main runner cavity. The width of one end of the second transition cavity is greater than the width of the other end of the second transition cavity.

7. The molding line pouring system of claim 1, wherein, The vertical gating cavity is provided with connecting gating cavities on the left and right sides respectively, and the main gating cavity is provided at the other end of each of the two connecting gating cavities. The horizontal gating cavity is provided on both the front and rear sides of the main gating cavity.

8. The molding line pouring system of claim 1, wherein, The connecting runner cavity includes a runner body cavity and a fixing part cavity disposed on the runner body cavity, and a chamber for accommodating the filter sheet is formed between the fixing part cavity and the runner body cavity.

9. The molding line pouring system of claim 1, wherein, The cross-sections of the main gating cavity and the horizontal gating cavity are both circular.

10. The molding line pouring system of claim 9, wherein, The diameter of the main gating cavity is larger than the diameter of the horizontal gating cavity.

Images