Vertical parting iron mold sand casting equipment
By adopting vertical shaped design and inner runner channel communication structure in iron sand-covered casting equipment, the problem of difficulty in casting special parts is solved, and the accuracy and quality of the castings are improved.
Patent Information
- Application Number
- CN202411983553.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-04-04
AI Technical Summary
The existing horizontally divided iron-shaped sand-covered casting process is difficult to achieve efficient casting of special parts such as bent pipes and thin-walled parts, resulting in excessive size, many defects and low pass rate.
Using vertically divided iron sand-covered casting equipment, the vertical arrangement of multiple types is achieved by setting up concave straight runners and the inner cavity on both sides of the iron main body, and connecting through the inner runner runner, and achieving vertical arrangement of multiple types, precise casting and efficient exhaust.
The precision and quality of the casting are improved, ensuring that the internal structure and appearance of the casting meet the design requirements, reducing casting defects, and improving the overall strength and performance of the casting.
Smart Images
Figure CN119747594A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of metal casting equipment, and in particular to a vertically parted iron mold sand-covered casting equipment. Background Art
[0002] The molding process and pouring of the existing iron mold sand-coated casting process are both horizontally parted, that is, the upper iron mold and the lower iron mold are covered with sand to form a complete casting mold, and then a pouring cup is placed on the upper mold, introduced to the parting surface through a straight runner, and then a cross runner and an inner runner are designed on the parting surface to form a pouring system for pouring.
[0003] The horizontally parted iron mold sand casting process is suitable for most castings, but for some special parts such as bent pipes and thin-walled parts, there are difficulties in core setting and pouring and filling the mold, resulting in problems such as dimensional tolerances, many defects, and low pass rate.
[0004] With respect to the above-mentioned related technologies, the inventors believe that: for large parts, the horizontally parted iron mold sand-coated casting process cannot be produced by stacking multiple molds like the resin sand molding casting process. Summary of the invention
[0005] In order to improve the problem that multiple casting molds cannot be stacked on a horizontally split iron mold, the present application provides a vertically split iron mold sand-covered casting equipment.
[0006] The present application provides a vertically parted iron mold sand-covered casting equipment adopting the following technical solution:
[0007] A vertically parted iron mold sand-covered casting equipment, comprising an equipment body, wherein the equipment body comprises an iron mold main body;
[0008] The middle positions of the two sides of the iron mold body are provided with inwardly concave sprues, and the two sides of the sprues are provided with inwardly concave cavities, and the cavities are connected to the sprues by an ingate flow channel;
[0009] A pouring cup is provided at the upper end of the sprue, and the pouring cup is communicated with the sprue runner;
[0010] The upper and lower ends of the cavity are both provided with positioning cavities;
[0011] A plurality of positioning pin holes are arranged on the two sides of the iron body, and the positions of the positioning pin holes on the two sides correspond to each other;
[0012] The cavities 8 provided on the two sides of the iron-type main body are located in corresponding positions;
[0013] The specifications of the cavities on the two sides of the iron mold body after closing are consistent with the specifications of the overall casting.
[0014] By adopting the above technical scheme, the vertically parted iron mold sand-coated casting equipment realizes the vertical arrangement of multiple partings, realizes accurate pouring and efficient exhaust in the casting process, and ensures the precision and quality of the castings. By arranging the concave straight runner and the concave cavity on both sides of the iron mold body and connecting the inner runner flow channel, the molten metal can be effectively guided to flow into the mold to ensure the uniform distribution and flow of the molten metal. At the same time, the positioning cavity and positioning pin hole ensure the precise positioning and docking of the iron mold body, avoiding defects caused by mold misalignment in the casting process. The design of the pouring cup optimizes the metal inflow path, reduces the formation of pores and inclusions, improves the surface quality and density of the casting, realizes high-precision control in the casting process, reduces metal waste, and improves the overall strength and performance of the casting. It is suitable for the manufacture of precision castings with higher requirements and occupies a small space.
[0015] Preferably, the equipment body includes the left iron core and the right iron core combined.
[0016] By adopting the above technical scheme, the equipment body realizes a more stable and efficient casting process by merging the left iron core and the right iron core, optimizes the combination and precision control of the casting mold, and the left iron core and the right iron core in the structural design after merging can effectively ensure the dimensional stability and symmetry of the casting mold through precise docking and matching, thereby reducing errors and defects that may occur in the casting process, improving the flow path of the molten metal, ensuring the uniform distribution of the metal and good filling performance, thereby reducing defects such as pores and inclusions in the casting, and improving the strength, density and surface quality of the casting. In addition, the design after the iron core is merged makes the disassembly, maintenance and operation of the mold easier, further improving the production efficiency and yield rate, and reducing the production cost.
[0017] Preferably, a mud core is placed in the cavity, and both ends of the mud core are embedded and positioned in the positioning cavity, and the space between the peripheral wall of the cavity and the outer peripheral wall of the mud core is consistent with the specifications of the casting.
[0018] By adopting the above technical scheme, a mud core is placed in the cavity and positioned by embedding its two ends in the positioning cavity, ensuring that the mud core is stably positioned during the casting process and accurately docked with the iron mold body, thereby achieving high-precision control of the casting. The space between the outer wall of the mud core and the outer wall of the cavity is consistent with the specifications of the casting, ensuring that the internal structure and appearance of the casting meet the design requirements, and effectively avoiding casting defects caused by unstable position or inaccurate size of the mud core during the casting process. The mud core can provide necessary inner cavity shape and strength support during the casting process, improve the quality and precision of the casting, while reducing metal waste during the pouring process, and improving production efficiency and economic benefits.
[0019] Preferably, the pouring cup is in a cone shape, and the small opening at the lower end of the pouring cup is connected to the upper opening of the sprue.
[0020] By adopting the above technical solution, the conical pouring cup 4 is connected with the upper opening of the sprue through the small opening at its lower end, so as to achieve smooth guidance and control of the molten metal, optimize the speed and direction of the metal flowing into the mold, reduce the generation of turbulence and bubbles, thereby effectively improving the surface quality and density of the casting, helping to improve the fluidity of the metal, ensure the uniform distribution of the metal during the pouring process, reduce casting defects, and improve production efficiency and the overall quality of the casting.
[0021] Preferably, the left core and the right core are vertically merged, and the concave pouring cups of the left core and the right core are synchronously merged to form a complete round hole channel-shaped pouring cup.
[0022] By adopting the above technical solution, after the left core and the right core are vertically merged, the concave pouring cups are synchronously merged to form a complete round hole channel-shaped pouring cup, which optimizes the inflow path of the molten metal, ensures smooth flow of the metal during the pouring process, reduces the formation of turbulence and bubbles, effectively improves the filling quality and surface finish of the casting, and at the same time improves the metal fluidity during the casting process and reduces casting defects.
[0023] Preferably, the left core and the right core are vertically merged, and the concave sprues of the left core and the right core are synchronously merged to form a complete circular hole channel-shaped sprue.
[0024] By adopting the above technical solution, the flow path of the molten metal is optimized, ensuring that the metal enters the mold evenly and efficiently, reducing bubbles and turbulence during the pouring process, improving the metal filling property and the quality of the casting, ensuring the stability and high precision of the casting process, and reducing the occurrence of casting defects.
[0025] Preferably, the left core and the right core are vertically merged, and the concave inner runners of the left core and the right core form a complete hole-shaped flow channel.
[0026] Preferably, the concave pouring cups of the left and right cores are synchronously merged to form a complete round hole channel-shaped pouring cup which is conical, with a large diameter at the upper end and a small diameter at the lower end seamlessly connected to the straight runner, and an arc is provided at the connection between the small diameter and the straight runner.
[0027] By adopting the above technical scheme, a conical pouring cup is formed by merging the concave pouring cups of the left core and the right core. The concave pouring cup has a large diameter at the upper end, a small diameter that is seamlessly connected to the straight runner, and a circular arc, which optimizes the inflow path of the molten metal, reduces flow resistance and turbulence, ensures that the metal flows smoothly and evenly into the mold, improves the filling effect, reduces the generation of bubbles and defects, and thus improves the quality, surface finish and overall precision of the casting.
[0028] Preferably, the flow connection positions of the sprue and the gate are both provided with rounded corners.
[0029] Preferably, the flow connection positions between the ingrowth and the cavity are both provided with rounded corners.
[0030] In summary, the present application includes at least one of the following beneficial technical effects:
[0031] 1. Vertical molding, vertical pouring, a series of side-by-side arrangements, the runner can be arranged in three dimensions, the metal liquid has the best fluidity, can improve the casting process yield, save materials and energy;
[0032] 2. The vertically parted iron mold for sand-coated iron casting requires a smaller plane size. The equipment such as the box closing machine, box opening machine, and mold transfer mechanism required for the conventional iron mold sand-coated casting production line can be eliminated or simplified, and automated production can be easily realized, greatly reducing the production site and equipment costs;
[0033] 3. Suitable for the production of large parts, thin-walled parts, and special parts that are difficult to achieve horizontal parting. For example, the center of gravity of the sand core of the bent pipe in the vertical state is still on the vertical parting surface, and there is no eccentricity or misalignment. BRIEF DESCRIPTION OF THE DRAWINGS
[0034] Figure 1 It is a schematic diagram of the vertically parted iron mold sand-coated casting equipment according to an embodiment of the present application.
[0035] Figure 2 yes Figure 1 Front view of .
[0036] Figure 3 yes Figure 2 Internal cross-sectional view of .
[0037] Figure 4 yes Figure 1 Schematic diagram after superposition.
[0038] Description of reference numerals: 100, equipment body; 101, left iron core; 102, right iron core; 1, iron mold body; 4, pouring cup; 5, sprue; 6, endocasting; 7, casting; 8, cavity; 801, positioning cavity; 9, positioning pin hole; 10, mud core; DETAILED DESCRIPTION
[0039] The following is combined with Figure 1-4 This application is described in further detail.
[0040] The present application embodiment discloses a vertically parted iron mold sand-covered casting equipment. Figure 1The equipment body 100 includes a left iron core 101 and a right iron core 102 which are vertically combined. The equipment body 100 includes an iron mold body 1. Concave sprues 5 are provided in the middle of both sides of the iron mold body 1. Concave cavities 8 are provided on both sides of the sprue 5. An endocastor 6 is provided between the cavity 8 and the sprue 5 to communicate with the sprue 5. By setting the concave sprue and the endocastor flow channel communication structure, the flow path of the molten metal is optimized to ensure that the molten metal flows into the cavity evenly, reduce casting defects such as pores and shrinkage cavities, and improve the quality of the casting. A pouring cup 4 is provided at the upper end of the sprue 5, and the pouring cup 4 is connected to the sprue 5 flow channel. Positioning cavities 801 are provided at the upper and lower ends of the cavity 8. A plurality of positioning pin holes 9 are provided on both sides of the iron mold body 1. The positions of the positioning pin holes 9 on both sides correspond to each other, which can ensure that the parting surface is accurately closed. Avoid cavity misalignment or asymmetry, effectively improve the dimensional accuracy and consistency of the casting, the positions of the cavities 8 arranged on both sides of the iron mold body 1 correspond to each other, ensure that after the left iron core 101 and the right iron core 102 are closed during the casting process, the size of the casting formed is consistent with the design, and the specification accuracy of the product is guaranteed. The specifications of the cavities 8 on both sides of the iron mold body 1 after closing are consistent with the specifications of the overall casting 7. By optimizing the cavity structure and runner design, the resistance and unevenness of the melt flow are reduced, thereby improving the casting efficiency, reducing the production cycle and energy consumption, and accurately controlling the speed and direction of the metal flowing into the cavity, which helps to reduce casting defects, especially in the pouring process of complex castings, to ensure the filling integrity of the casting. It is suitable for the production of castings with complex shapes and high precision requirements, and can meet the production needs of high-quality castings.
[0041] Reference Figure 2 A mud core 10 is placed in the cavity 8, and both ends of the mud core 10 are embedded and positioned in the positioning cavity 801. The space between the peripheral wall of the cavity 8 and the outer peripheral wall of the mud core 10 is consistent with the specifications of the casting 7, which effectively ensures the dimensional accuracy and consistency of the casting during the casting process and avoids specification errors caused by mold misalignment or deformation. The mud core 10 is embedded in the positioning cavity 801 to ensure the accurate positioning of the mud core 10 in the cavity, prevent the mud core from shifting or deforming during the casting process, thereby ensuring the precision and stability of the casting. At the same time, it also avoids surface defects such as air inclusions and sand holes that may occur during the casting process, thereby improving the surface quality of the casting.
[0042] Reference Figure 2 , Figure 3 The pouring cup 4 is in the shape of a cone. The small opening at the lower end of the pouring cup 4 is connected to the upper opening of the sprue 5. The liquid metal enters the sprue 5 directly from the pouring cup 4 and enters the cavity 8 through the inner gate 6. The liquid metal solidifies in the space formed by the cavity 8 and the mud core 10 to form a casting 7.
[0043] Reference Figure 4The left core 101 and the right core 102 are vertically merged, and the concave pouring cup 4 of the left core 101 and the right core 102 are synchronously merged to form a complete round hole channel-shaped pouring cup 4, and the concave straight runner 5 of the left core 101 and the right core 102 are synchronously merged to form a complete round hole channel-shaped straight runner 5, and the concave inner runner 6 forms a complete hole-shaped flow channel. After merging, the complete round hole channel-shaped pouring cup 4 is conical, with a large diameter at the upper end and a small diameter at the lower end seamlessly connected with the straight runner 5. An arc is provided at the connection between the small diameter and the straight runner 5, which is conducive to the smooth transition of the fluid, reduces the generation of bubbles and pore defects, and optimizes the flow path of the molten metal. When the molten metal flows from the pouring cup 4 into the straight runner 5, the flow is smoother, avoiding turbulence and uneven distribution of the melt, and reducing the occurrence of casting defects.
[0044] The implementation principle of the vertically parted iron mold sand-coated casting equipment of the embodiment of the present application is as follows: the vertically parted iron mold sand-coated casting method is to form a complete casting mold by coating the left iron mold 101 and the right iron mold 102 with sand respectively, and then directly pouring from the top of the parting surface. The pouring system, including the straight runner, the horizontal runner, and the inner runner, are all on the parting surface. In actual application, a double-sided iron mold is made, and the two sides of the same iron mold are respectively the left mold and the right mold. Figure 4 From left to right, the first iron mold is covered with sand on the right side and the second iron mold is covered with sand on the left side to form the first mold to be poured, and the second iron mold is covered with sand on the right side and the third iron mold is covered with sand on the left side to form the second mold to be poured. A series of double-sided iron molds are covered with sand to form a series of molds, and then pouring is carried out.
[0045] The technical advantages of the vertically parted iron mold sand-covered casting equipment in the embodiment of the present application are:
[0046] 1. Stand up the upper and lower iron molds to form vertical left and right iron molds, change the parting surface from horizontal to vertical, and the pouring system is all on the parting surface. Step runners and multi-layer runners can be designed on the parting surface to be suitable for the production of large and thin-walled parts. At the same time, after the parting surface is stood up, the eccentricity of the sand core such as the elbow can also be solved;
[0047] 2. Compared with vertical parting sand casting, it has evolved into metal mold covered with sand (iron mold covered with sand), which has the characteristics of rigidity, fast cooling speed, and precise size, and the amount of sand used is only 1 / 10 of that of traditional sand casting;
[0048] 3. Vertical modeling, vertical pouring, and a series of side-by-side arrangements of iron mold sand casting make demoulding easy and occupy a small space.
[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A vertically parted iron mold sand-coated casting equipment, comprising an equipment body (100), characterized in that: The equipment body (100) comprises an iron-type body (1); The middle positions of the two side surfaces of the iron mold body (1) are provided with inwardly concave sprues (5), the two sides of the sprues (5) are provided with inwardly concave cavities (8), and an endocastor (6) is provided between the cavities (8) and the sprues (5) to communicate with each other; A pouring cup (4) is provided at the upper end of the sprue (5), and the pouring cup (4) is connected to the flow channel of the sprue (5); The upper end and the lower end of the cavity (8) are both provided with a positioning cavity (801); A plurality of positioning pin holes (9) are provided on the two side surfaces of the iron-shaped main body (1), and the positions of the positioning pin holes (9) on the two sides correspond to each other; The cavities (8) provided on the two sides of the iron-shaped body (1) are located in corresponding positions; The specifications of the cavities (8) on the two side surfaces of the iron mold body (1) after closing are consistent with the specifications of the overall casting (7).
2. According to the vertical parting iron mold sand-covered casting equipment according to claim 1, it is characterized in that: The equipment body (100) comprises the left iron core (101) and the right iron core (102) combined into a single body.
3. According to the vertical parting iron mold sand-covered casting equipment according to claim 1, it is characterized in that: A mud core (10) is placed in the cavity (8), and both ends of the mud core (10) are embedded and positioned in the positioning cavity (801). The space between the peripheral wall of the cavity (8) and the outer peripheral wall of the mud core (10) is consistent with the specifications of the casting (7).
4. According to the vertical parting iron mold sand-covered casting equipment according to claim 1, it is characterized in that: The pouring cup (4) is in the shape of a cone, and the small opening at the lower end of the pouring cup (4) is connected to the upper opening of the sprue (5).
5. According to the vertical parting iron mold sand-covered casting equipment according to claim 1, it is characterized in that: The left iron core (101) and the right iron core (102) are vertically combined, and the concave pouring cups (4) of the left iron core (101) and the right iron core (102) are synchronously combined to form a complete pouring cup (4) in the shape of a circular hole channel.
6. According to the vertical parting iron mold sand-covered casting equipment according to claim 1, it is characterized in that: The left iron core (101) and the right iron core (102) are vertically combined, and the concave sprues (5) of the left iron core (101) and the right iron core (102) are synchronously combined to form a complete circular hole channel-shaped sprue (5).
7. According to the vertical parting iron mold sand-covered casting equipment according to claim 1, it is characterized in that: The left iron core (101) and the right iron core (102) are vertically combined, and the concave inner runners (6) of the left iron core (101) and the right iron core (102) form a complete hole-shaped flow channel.
8. According to the vertical parting iron mold sand-covered casting equipment according to claim 4, it is characterized in that: The concave pouring cups (4) of the left iron core (101) and the right iron core (102) are synchronously combined to form a complete round hole channel-shaped pouring cup (4) which is conical, with a large diameter at the upper end and a small diameter at the lower end seamlessly connected to the sprue (5), and an arc is provided at the connection between the small diameter and the sprue (5).
9. According to the vertical parting iron mold sand-covered casting equipment according to claim 7, it is characterized in that: The flow connection positions of the sprue (5) and the ingrate (6) are both provided with rounded corners.
10. According to the vertical parting iron mold sand-covered casting equipment according to claim 7, it is characterized in that: The flow connection positions between the ingrowth (6) and the cavity (8) are both provided with rounded corners.