A secondary core-shooting casting device for agricultural machinery valves

Abstract

This utility model discloses a secondary core-shooting casting device for agricultural machinery valves, including a casting mold support block. A casting groove is formed on the top surface of the casting mold support block, and a cooling chamber is formed inside the casting mold support block. A water outlet connector connected to the cooling chamber is installed on one side of the casting mold support block, and a connecting frame connected to the cooling chamber is installed on the other side of the casting mold support block. A water inlet connector is bolted to one side of the connecting frame. Multiple limiting vertical plates are installed inside the cooling chamber, and several baffles are provided inside the cooling chamber. The baffles are sleeved on the outside of the limiting vertical plates, and a limiting component that presses down on the baffles is installed on one side of the connecting frame. This utility model controls the baffles to block the water passages in a portion of the cooling chamber, reducing the coolant flow rate in that area and thus adjusting the cooling efficiency in that area. The coolant flow rate is higher where there are fewer baffles and lower where there are more baffles, ensuring the quality of the casting.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery valve casting, specifically a secondary core-shooting casting device for agricultural machinery valves. Background Technology

[0002] In the field of agricultural machinery valve manufacturing, the casting process is a key factor that determines the quality and performance of agricultural machinery valves. The cooling effect of the casting device directly affects the forming accuracy and internal quality of the castings.

[0003] Traditional agricultural machinery valve casting devices mostly use a single cooling medium or a uniform cooling structure, which cannot provide targeted cooling based on the thickness and structural differences of different parts of the agricultural machinery valve mold. The cooling rate of thicker areas of the mold is too slow, which can easily lead to defects such as shrinkage cavities and porosity; while the cooling rate of thinner areas is too fast, which may cause problems such as deformation and cracks in the casting. Therefore, it is necessary to design a secondary core-shooting casting device for agricultural machinery valves to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a secondary core-shooting casting device for agricultural machinery valves to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a secondary core-shooting casting device for agricultural machinery valves, comprising a casting mold support block, a casting groove on the top surface of the casting mold support block, a cooling chamber inside the casting mold support block, a water outlet connector connected to the cooling chamber installed on one side of the casting mold support block, a connecting frame connected to the cooling chamber installed on the other side of the casting mold support block, and a water inlet connector connected to one side of the connecting frame by bolts; The cooling chamber is equipped with multiple limiting vertical plates, and the cooling chamber is provided with several baffles. The baffles are sleeved on the outside of the limiting vertical plates, and a limiting component that presses down on the baffles is installed on one side of the connecting frame.

[0006] Preferably, the baffle surface has a perforation, the limiting vertical plate passes through the perforation, and the cross-sectional dimensions of the limiting vertical plate are appropriately matched with the cross-sectional dimensions of the perforation on the baffle surface.

[0007] Preferably, the limiting component includes a threaded rod, which is threadedly connected to the top of the connecting frame, with the lower end of the threaded rod perpendicular to the top surface of the baffle.

[0008] Preferably, a knob is fixedly installed at one end of the threaded rod.

[0009] Preferably, one end of both the water outlet connector and the water inlet connector is connected to a pipe, and the two pipes are used to transport coolant.

[0010] Preferably, a thermally conductive pad is installed in the inner cavity of the casting groove, and the thermally conductive pad is made of graphite material.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. This agricultural machinery valve uses a secondary core-shooting casting device. By controlling the baffle to block the water passage in a certain area, the coolant flow rate in that area can be reduced, thereby adjusting the cooling efficiency of that area. After adjusting according to the thickness of different parts of the casting, turning the knob drives the threaded rod to move downward, so that the threaded rod presses against the top of the baffle. This changes the number of baffles in different positions inside the cooling chamber. The coolant flow rate is higher in areas with fewer baffles and lower in areas with more baffles, ensuring the quality of the casting.

[0012] 2. This agricultural machinery valve uses a secondary core-shooting casting device. The mold is placed inside the mold groove and casting is poured into the mold. After casting, coolant is introduced into the water inlet connector through a pipe. The coolant passes through the cooling chamber and enters the water outlet connector before being discharged. Cooling is required during the casting process. Heat is conducted through the sand core and mold to the heat-conducting pad, and then through the heat-conducting pad to the mold support block, and then to the coolant in the cooling chamber, thereby removing the heat from the surface of the mold support block. It has high cooling efficiency and facilitates rapid casting. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the internal structure of the cooling chamber of this utility model.

[0014] In the diagram: 1. Casting bearing block; 2. Casting groove; 3. Heat-conducting pad; 4. Cooling chamber; 5. Water outlet connector; 6. Connecting frame; 7. Water inlet connector; 8. Pipe; 9. Limiting vertical plate; 10. Baffle; 11. Threaded rod; 12. Knob. Detailed Implementation

[0015] 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.

[0016] Example 1

[0017] Please refer to Figure 1-3As shown, this utility model provides a secondary core-shooting casting device for agricultural machinery valves, including a casting mold support block 1, a casting mold groove 2 on the top surface of the casting mold support block 1, a cooling cavity 4 inside the casting mold support block 1, a water outlet connector 5 connected to the cooling cavity 4 installed on one side of the casting mold support block 1, a connecting frame 6 connected to the cooling cavity 4 installed on the other side of the casting mold support block 1, and a water inlet connector 7 connected to one side of the connecting frame 6 by bolts; The cooling chamber 4 has multiple limiting vertical plates 9 installed inside, and several baffles 10 are provided inside the cooling chamber 4. The baffles 10 are sleeved on the outside of the limiting vertical plates 9, and a limiting component that presses down the baffles 10 is installed on one side of the connecting frame 6.

[0018] Specifically, by controlling the baffle 10 to block the water passages in the four areas of the cooling chamber, the coolant flow rate in this area can be reduced, thereby adjusting the cooling efficiency of the area. The coolant flow rate is large where there are fewer baffles 10 and small where there are more baffles 10, thus ensuring the quality of the casting.

[0019] Wherein: the surface of the baffle 10 has a through hole, the limiting vertical plate 9 passes through the through hole, and the cross-sectional size of the limiting vertical plate 9 is appropriately matched with the cross-sectional size of the through hole on the surface of the baffle 10. When the baffle 10 needs to be removed, the baffle 10 is moved upward until the limiting vertical plate 9 is completely removed from the hole on the surface of the baffle 10. At this time, the baffle 10 can be moved horizontally to remove it from the cooling chamber 4.

[0020] The limiting component includes a threaded rod 11, which is threaded to the top of the connecting frame 6. The lower end of the threaded rod 11 is perpendicular to the top surface of the baffle 10. A knob 12 is fixedly installed at one end of the threaded rod 11. After adjusting the number and position of the baffle 10, the knob 12 is rotated to drive the threaded rod 11 to move downward, thereby pressing the top of the baffle 10 with the threaded rod 11.

[0021] Among them, one end of the water outlet connector 5 and the water inlet connector 7 are connected to a pipe 8. The two pipes 8 are used to transport coolant, so that the coolant enters the cooling chamber 4 and carries away the heat of the mold support block 1.

[0022] Among them: a heat-conducting pad 3 is installed in the inner cavity of the casting groove 2. The heat-conducting pad 3 is made of graphite material. The heat-conducting pad 3 can conduct the heat on the surface of the casting mold to the casting support block 1, thereby heating the coolant in the cooling cavity 4 for heat dissipation.

[0023] Working principle: This utility model is a secondary core-shooting casting device for agricultural machinery valves. When manufacturing agricultural machinery valve components, core sand is injected into the core box in two stages to form a sand core. The formed sand core is placed into the mold, the mold is placed inside the mold groove 2, and casting is poured into the mold. After casting, coolant is introduced into the water inlet connector 7 through the pipe 8. The coolant passes through the cooling chamber 4 and enters the water outlet connector 5 before being discharged. Cooling is required during the casting process. Heat is conducted through the sand core and the mold to the heat-conducting pad 3, and then through the heat-conducting pad 3 to the mold support block 1, and then to the coolant in the cooling chamber 4, thereby removing the heat from the surface of the mold support block 1. It has high cooling efficiency and facilitates rapid casting. After removing the water inlet connector 7 from the surface of the connecting frame 6, the baffle 10 can be inserted into the cooling cavity 4, with the hole on the surface of the baffle 10 perpendicular to a limiting vertical plate 9. The baffle 10 is then moved downwards, allowing the limiting vertical plate 9 to pass into the hole on the surface of the baffle 10. This controls the baffle 10 to block the water passage in a certain area, reducing the coolant flow in that area and thus adjusting the cooling efficiency in that area. After adjusting according to the thickness of different parts of the casting, the knob 12 is turned to drive the threaded rod 11 downwards, causing the threaded rod 11 to press against the top of the baffle 10. This changes the number of baffles 10 at different positions inside the cooling cavity 4. The area with fewer baffles 10 has a larger coolant flow, while the area with more baffles 10 has a smaller coolant flow, ensuring the quality of the casting.

[0024] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0025] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A secondary core-shooting casting device for agricultural machinery valves, comprising a casting mold support block (1), characterized in that: The top surface of the casting support block (1) is provided with a casting groove (2), and the interior of the casting support block (1) is provided with a cooling cavity (4). A water outlet connector (5) connected to the cooling cavity (4) is installed on one side of the casting support block (1), and a connecting frame (6) connected to the cooling cavity (4) is installed on the other side of the casting support block (1). A water inlet connector (7) is connected to one side of the connecting frame (6) by bolts. The cooling chamber (4) is equipped with multiple limiting vertical plates (9), and the cooling chamber (4) is provided with several baffles (10). The baffles (10) are sleeved on the outside of the limiting vertical plates (9), and a limiting component that presses down the baffles (10) is installed on one side of the connecting frame (6).

2. The secondary core-shooting casting device for agricultural machinery valves according to claim 1, characterized in that: The baffle (10) has a perforation on its surface, the limiting vertical plate (9) passes through the perforation, and the cross-sectional dimensions of the limiting vertical plate (9) are appropriately matched with the cross-sectional dimensions of the perforation on the surface of the baffle (10).

3. The secondary core-shooting casting device for agricultural machinery valves according to claim 1, characterized in that: The limiting component includes a threaded rod (11), which is threaded to the top of the connecting frame (6), and the lower end of the threaded rod (11) is perpendicular to the top surface of the baffle (10).

4. The secondary core-shooting casting device for agricultural machinery valves according to claim 3, characterized in that: A knob (12) is fixedly installed at one end of the threaded rod (11).

5. The secondary core-shooting casting device for agricultural machinery valves according to claim 1, characterized in that: One end of the water outlet connector (5) and the water inlet connector (7) are both connected to a pipe (8), and the two pipes (8) are used to transport coolant.

6. The secondary core-shooting casting device for agricultural machinery valves according to claim 1, characterized in that: The inner cavity of the casting groove (2) is equipped with a heat-conducting pad (3), which is made of graphite.

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