Base casting system

Abstract

The utility model provides a base casting system, and belongs to the technical field of casting molds. Comprising a mold unit, a mold cavity of the mold unit is used for casting to form a base, a feeding opening is formed in the middle of the top of the mold unit and provided with a containing cavity used for containing feeding liquid, a partition plate is detachably connected to the bottom of the containing cavity, the bottom face of the partition plate is used for forming the top face of the base, and a plurality of through holes are evenly formed in the partition plate. The through hole is used for communicating the accommodating cavity with a mold cavity of the mold unit; the technical problems that in the prior art, due to the fact that a feeding opening is large in size, a riser structure is not easy to cut, and feeding liquid in the feeding opening is easy to cool are mainly solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of casting molds, and in particular relates to a base casting system. Background Art

[0002] The base on the extruder is large in overall size and has high quality requirements. After production is completed, it needs to meet the requirements of ultrasonic inspection and magnetic particle inspection.

[0003] In order to meet the requirement of sufficient shrinkage feeding, the existing mold of the casting base is provided with a shrinkage feeding port with a larger diameter on the top surface of the middle part of the mold. However, after the product is formed, the diameter of the riser structure formed by the shrinkage feeding liquid at the shrinkage feeding port is large, which makes it difficult to cut from the product. In addition, since the shrinkage feeding port is an open structure, the shrinkage feeding liquid in the shrinkage feeding port is easy to cool. Once the shrinkage feeding liquid in the shrinkage feeding port cools and solidifies, the shrinkage feeding effect will be reduced.

[0004] Therefore, it is necessary to provide an improved technical solution to address the above-mentioned deficiencies in the prior art. Utility Model Content

[0005] The utility model aims to provide a base casting system to solve the technical problems in the prior art that the feeder port is too large to make the riser structure difficult to cut and the feeder liquid in the feeder port is easy to cool.

[0006] In order to achieve the above purpose, the base casting system of the utility model provides the following technical solutions:

[0007] A base casting system comprises a mold unit, wherein the mold cavity of the mold unit is used for casting to form a base, a feeding port is arranged at the middle position of the top of the mold unit, the feeding port has a accommodating cavity for containing feeding liquid, a baffle plate is detachably connected to the bottom of the accommodating cavity, the bottom surface of the baffle plate is used to form the top surface of the base, a plurality of through holes are evenly arranged on the baffle plate, and the through holes are used to connect the accommodating cavity with the mold cavity of the mold unit.

[0008] As a further optimized technical solution, a protrusion is provided on the edge of the baffle plate, and a groove matching the protrusion is correspondingly provided on the side wall of the accommodating cavity. The protrusion is clamped in the groove to realize a detachable connection between the baffle plate and the accommodating cavity.

[0009] As a further optimized technical solution, a filter is provided on the top of the through hole for filtering the shrinkage feeding liquid flowing from the accommodating cavity into the mold cavity.

[0010] As a further optimized technical solution, the filter element is a circular thin plate structure, which is hinged on one side of the top of the through hole. The diameter of the thin plate structure is larger than the diameter of the through hole and can completely cover the through hole. The thin plate structure is arranged with multiple perforations that penetrate the thin plate structure.

[0011] As a further optimized technical solution, the filter element is a circular mesh structure, the mesh structure is hinged on one side of the top of the through hole, the diameter of the mesh structure is larger than the diameter of the through hole and can completely cover the through hole.

[0012] As a further optimized technical solution, the outer side wall of the shrinkage-feeding port is cylindrical, and the accommodating cavity is in the shape of a truncated cone that is smaller at the top and larger at the bottom.

[0013] As a further optimized technical solution, a heat-insulating layer is provided on the side wall of the feeding port to slow down the drop in the temperature of the feeding liquid.

[0014] As a further optimized technical solution, the thermal insulation layer is a vacuum cavity structure formed inside the side wall of the feeding port.

[0015] As a further optimized technical solution, the vacuum chamber structure is arranged in a trapezoidal shape that is thick at the top and thin at the bottom.

[0016] As a further optimized technical solution, the thermal insulation layer is a thermal insulation pad made of a thermal insulation material, and the thermal insulation pad is arranged inside and / or outside the side wall of the shrinkage supplementation port.

[0017] Beneficial effects: The utility model installs a baffle plate at the bottom of the accommodating cavity of the shrinkage feeding port, and the shrinkage feeding liquid flows into the mold cavity through the through holes on the baffle plate. After the product is formed, the riser structure formed by the cooling of the shrinkage feeding liquid is connected to the connecting column formed by the through hole between the products. When cutting the riser structure, compared with the existing direct cutting of the riser structure, the utility model only needs to cut the connecting column with a smaller diameter, thereby improving the convenience of cutting the riser structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. Among them:

[0019] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0020] Figure 2 A schematic cross-sectional view of a shrinkage-feeding port according to an embodiment of the utility model;

[0021] Figure 3 The utility model is a top view of a baffle plate according to an embodiment of the utility model.

[0022] In the figure: 1. mold unit; 2. shrinkage compensation port; 201. accommodating cavity; 3. baffle plate; 301. protrusion; 4. through hole; 5. filter element; 501. perforation; 502. hinge; 6. insulation layer. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the protection scope of the present invention.

[0024] In the description of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. The terms "connected" and "connection" used in the present invention should be understood in a broad sense. For example, they can be fixed connections or detachable connections; they can be directly connected or indirectly connected through intermediate components. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0025] The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0026] The utility model provides a base casting system, by installing a baffle plate with a through hole at the bottom of a feeding port accommodating cavity, so that after the feeding liquid is cooled, the feeding liquid forms a connecting column in the through hole, and the connecting column connects the riser structure and the product. When cutting the riser structure, it is no longer necessary to cut the riser structure with a larger diameter, and only the connecting column with a smaller diameter needs to be cut, thereby reducing the difficulty of cutting the riser structure.

[0027] Example 1

[0028] like Figure 1 As shown, the base casting system includes a mold unit 1, the mold cavity of the mold unit 1 is used for casting to form a base, a feeding port 2 is arranged in the middle position of the top of the mold unit 1, the feeding port 2 has a accommodating cavity 201 for containing a feeding liquid, and the mold unit 1 is connected with a casting channel (not shown in the figure). When casting the product, the casting solution flows into the mold cavity of the mold unit 1 through the casting channel, and the casting solution continues to fill the mold cavity until the mold cavity is filled. Then, the casting solution enters the accommodating cavity 201 of the feeding port 2 to form a feeding liquid. In this way, during the cooling process of the product, once the size shrinks, the feeding liquid will flow into the mold cavity in time to fill the position where the product shrinks, thereby ensuring that the product meets the processing requirements.

[0029] Among them, a baffle plate 3 is detachably connected to the bottom of the accommodating cavity 201, and the bottom surface of the baffle plate 3 is used to form the top surface of the base. A plurality of through holes 4 are evenly arranged on the baffle plate 3, and the through holes 4 are used to connect the accommodating cavity 201 with the mold cavity of the mold unit 1.

[0030] In this embodiment, in order to facilitate demolding, the feeding port 2 is a structure formed by two semicircles, and the baffle plate 3 is pressed and formed by casting sand. The casting sand can be any one of quartz sand, olive sand, steel sand, magnesia sand, and ceramic sand. After the product is cooled and formed, the mold unit 1 and the feeding port 2 are removed, and then the baffle plate 3 is broken by knocking, so that the connecting column formed by the through hole 4 is directly exposed, and then the purpose of cutting the riser structure on the product can be achieved by directly cutting the connecting column.

[0031] like Figure 2 As shown, a protrusion 301 is provided at the edge of the baffle plate 3, and a groove 2011 adapted to the protrusion 301 is correspondingly provided on the side wall of the accommodating cavity 201. The protrusion 301 is clamped in the groove to realize a detachable connection between the baffle plate 3 and the accommodating cavity 201.

[0032] In actual production, there will inevitably be some scum in the casting solution. These scums float in the feeding port 2 in the early stage. Later, during the feeding process of the feeding liquid, it is easy to flow into the mold cavity and form in the product, which will affect the quality of the product. In order to solve this technical problem, a filter 5 is installed on the top of the through hole 4 to filter the feeding liquid flowing into the mold cavity from the accommodating cavity 201.

[0033] like Figure 3 As shown, the filter element 5 is a circular thin plate structure, which is hinged to one side of the top of the through hole 4 through a hinge 502, and the hinge 502 can rotate at an angle less than 90°. The diameter of the thin plate structure is larger than the diameter of the through hole 4 and can completely cover the through hole 4. The thin plate structure is arranged with a plurality of through holes 501 that penetrate the thin plate structure.

[0034] In this way, when the shrinkage feeding liquid enters the accommodating cavity 201 from the mold cavity in the early stage, the filter element 5 is flushed open by the shrinkage feeding liquid. After the shrinkage feeding liquid enters the accommodating cavity 201, the filter element 5 automatically covers the top of the through hole 4 under the action of its own gravity. When the shrinkage feeding liquid needs to flow back to the mold cavity in the later stage, due to the action of the filter element 5, the scum will be retained in the accommodating cavity 201, thereby ensuring the quality of the product.

[0035] like Figure 2As shown, the outer wall of the feeding port 2 is cylindrical, and the accommodating cavity 201 is a truncated cone with a small top and a large bottom. In this way, the accommodating cavity 201 can be a shrinking structure, which can reduce the loss of temperature at the open position of the accommodating cavity 201. In addition, such a structural design makes the wall thickness of the feeding port 2 gradually decrease from the open position to the product position, further ensuring the heat preservation performance of the open position that is easy to lose temperature. At the same time, the shape of the accommodating cavity 201 can also ensure the smooth reflux of the feeding liquid.

[0036] In order to further ensure that the temperature drop of the feeding liquid is slowed down, an insulation layer 6 is provided on the side wall of the feeding port 2. In this embodiment, the insulation layer 6 is a vacuum cavity structure formed inside the side wall of the feeding port 2. The vacuum cavity structure is arranged in a trapezoidal shape with a thick top and a thin bottom. The vacuum cavity can effectively block the transfer of heat, thereby ensuring the feeding effect of the product during the entire cooling process.

[0037] Example 2

[0038] This embodiment provides another form of baffle. Different from Embodiment 1, in this embodiment, the baffle is not formed by casting sand pressing, but is made of other heat-resistant materials, such as hollow ceramics; or heat-resistant alloys. In this case, when the mold is removed, the baffle is stuck on the connecting column, but the position where the connecting column is connected to the riser structure can be cut first, and then the baffle can be removed and the bottom end of the connecting column can be cut.

[0039] Example 3

[0040] This embodiment provides another form of filter element. Different from Embodiment 1, in this embodiment, the filter element is a circular mesh structure, which is hinged on one side of the top of the through hole. The diameter of the mesh structure is larger than the diameter of the through hole and can completely cover the through hole.

[0041] Example 4

[0042] This embodiment provides another form of thermal insulation layer. Different from Embodiment 1, in this embodiment, the thermal insulation layer is a thermal insulation pad made of a thermal insulation material, and the thermal insulation pad is arranged inside and / or outside the side wall of the shrinkage feeding port.

[0043] It should be understood that the above description is merely exemplary and the embodiments of the present application do not limit this.

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are within the scope of protection of the pending claims of the present invention.

Claims

1. A base casting system, comprising a mold unit (1), wherein a mold cavity of the mold unit (1) is used for casting to form a base, a feeding port (2) is provided at the middle position of the top of the mold unit (1), and the feeding port (2) has a receiving cavity (201) for containing a feeding liquid, characterized in that: The bottom of the accommodating cavity (201) is detachably connected to a baffle plate (3), the bottom surface of the baffle plate (3) is used to form the top surface of the base, and a plurality of through holes (4) are evenly arranged on the baffle plate (3), and the through holes (4) are used to connect the accommodating cavity (201) with the mold cavity of the mold unit (1).

2. The base casting system according to claim 1, characterized in that: The baffle plate (3) is provided with a protrusion (301) on the edge, and a groove (2011) adapted to the protrusion (301) is correspondingly provided on the side wall of the accommodating cavity (201), and the protrusion (301) is clamped in the groove to realize a detachable connection between the baffle plate (3) and the accommodating cavity (201).

3. The base casting system according to claim 2, characterized in that: A filter element (5) is provided at the top of the through hole (4) for filtering the shrinkage feeding liquid flowing from the accommodating cavity (201) into the mold cavity.

4. The base casting system according to claim 3, characterized in that: The filter element (5) is a circular thin plate structure, which is hinged on one side of the top of the through hole (4), the diameter of the thin plate structure is larger than the diameter of the through hole (4) and can completely cover the through hole (4), and the thin plate structure is provided with a plurality of perforations (501) penetrating the thin plate structure.

5. The base casting system according to claim 3, characterized in that: The filter element (5) is a circular mesh structure, which is hinged on one side of the top of the through hole (4), and the diameter of the mesh structure is larger than the diameter of the through hole (4) and can completely cover the through hole (4).

6. The base casting system according to any one of claims 1 to 5, characterized in that: The outer wall of the shrinkage-feeding port (2) is cylindrical, and the accommodating cavity (201) is in the shape of a truncated cone that is smaller at the top and larger at the bottom.

7. The base casting system according to claim 6, characterized in that: A heat-insulating layer (6) is provided on the side wall of the feeding port (2) to slow down the drop in the temperature of the feeding liquid.

8. The base casting system according to claim 7, characterized in that: The thermal insulation layer (6) is a vacuum cavity structure formed inside the side wall of the shrinkage feeding port (2).

9. The base casting system according to claim 8, characterized in that: The vacuum chamber structure is arranged in a trapezoidal shape that is thick at the top and thin at the bottom.

10. The base casting system according to claim 7, characterized in that: The heat-insulating layer (6) is a heat-insulating pad made of a heat-insulating material, and the heat-insulating pad is arranged inside and / or outside the side wall of the shrinkage-feeding opening (2).

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