Die casting structure for rotating base of nodular cast iron industrial robot

Abstract

The utility model provides a nodular cast iron industrial robot rotating base mold casting structure which comprises an outer mold plate, a sand mold, a wax mold and a hole separating block, the outer mold plate is an outer layer shroud ring structure of a mold, the sand mold is arranged in the outer mold plate and provided with a forming cavity, the forming cavity is a molten iron casting solidification space, and the wax mold is arranged in the outer mold plate. The forming cavity is filled with a wax mold in a matched mode, a forming hole of the wax mold is connected with a hole separating block in a filling mode, the hole separating block is embedded into sand molds connected to the two sides of the forming cavity, a casting runner is formed in each sand mold, the tail end of each casting runner is connected with the forming cavity through the bottom of the mold, and the flowing tail end of the forming cavity is further connected with an exhaust structure. The exhaust structure is formed in the sand mold and extends upwards. The outer mold plate is used for fixing the sand mold, expansion deformation of the sand mold can be avoided, the wax mold is used for supporting the space in the forming cavity, the forming precision of the forming cavity can be maintained, forming defects are reduced, and the product quality is improved.

Description

Technical Field

[0001] This utility model relates to an improvement in the production device for an industrial robot base, specifically a ductile iron industrial robot rotating base mold casting structure. Background Technology

[0002] The base of an industrial robot is the foundation of its overall rotational freedom. It houses the robot's drive and electrical control equipment and stabilizes the robot's center of gravity. Therefore, the base of an industrial robot is usually cast. The base is characterized by its large weight and uneven thickness, with the upper wall thickness being less than the lower wall thickness. This can lead to shrinkage defects caused by uneven cooling. Furthermore, the side of the base has lateral holes, which affect the flow of molten metal during molding. Therefore, it is necessary to improve the casting structure of the mold to enhance the filling effect of the molten metal and reduce molding defects. Thus, the molding mold needs to be improved. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned deficiencies in the existing technology and to provide a ductile iron industrial robot rotating base mold casting structure.

[0004] The technical solution adopted by this utility model to solve the above problems is as follows: The mold casting structure includes an outer template, a sand mold, a wax mold, and a partition block. The outer template is the outer layer of the mold, and the interior of the outer template is a sand mold with a forming cavity. The forming cavity is a space for molten iron to be poured and solidified. A wax mold is filled in the forming cavity, and a partition block is filled and connected at the forming hole of the wax mold. The partition block is embedded in the sand mold connecting both sides of the forming cavity. A casting channel is formed in the sand mold, and the end of the casting channel is connected to the forming cavity from the bottom of the mold. An exhaust structure is also connected to the flow end of the forming cavity. The exhaust structure is formed in the sand mold and extends upward. The outer template is used to fix the sand mold and can prevent the sand mold from expanding and deforming. The wax mold is used to support the space in the forming cavity and can also maintain the forming accuracy of the forming cavity. The partition block can be used to form lateral holes, which is convenient for fixing and demolding, and improves the forming accuracy. The mold as a whole has an exhaust structure, which can discharge the gas in the forming cavity while maintaining the forming pressure, which can effectively improve the filling effect, reduce forming defects, and improve product quality.

[0005] Furthermore, the outer template forms a rectangular cube enclosure structure, each face of which includes an enclosure plate. The edges of the enclosure plates are connected at angles by fasteners. The top enclosure plate has a casting port and a vent. The casting port is positioned to correspond to the casting flow channel, and the vent is positioned to correspond to the venting structure. A pressure-holding ring is also provided in the vent, embedded in the inner diameter of the vent. The enclosure plates are fixedly connected by fasteners, allowing for a larger casting pressure. The pressure-holding ring of the vent maintains the pressure inside the mold, keeping the filled liquid flow under pressure, reducing the forming volume of the riser, avoiding the amount of material to be cut during subsequent processing, and improving material utilization efficiency.

[0006] Furthermore, the casting runner is located in the center of the mold, and symmetrical molding cavities are arranged on both sides of the casting runner. Each molding cavity is used to cast a base product. Each molding cavity has a separate venting structure at its far end. The venting structures are separate and do not communicate with each other. Two or more products can be molded simultaneously in the same mold, which improves processing efficiency and reduces waste generation.

[0007] Furthermore, the casting runner includes a main runner, branch runners, and a flow inlet. The main runner's diameter gradually decreases from top to bottom. A branch runner connects to the bottom of the main runner and extends to the forming cavity. The forming cavity and the branch runners are connected via a flow inlet, which has a flat conical structure. The casting runner can handle a large flow of molten metal. The flat structure of the flow inlet facilitates the removal of waste material, resulting in high-quality molding and reduced surface defects in the product.

[0008] Furthermore, the venting structure includes a pressure-holding nozzle and a venting channel. The pressure-holding nozzle is connected to the molding cavity, and its diameter gradually increases, extending into the venting channel. The venting channel extends upward and communicates with the external environment of the mold. The pressure-holding nozzle can maintain the pressure inside the molding cavity, which is beneficial for liquid flow to fill hard-to-reach locations and reduce product defects.

[0009] Furthermore, the partition block is an integral structure made of high-temperature resistant material. It has a bore body that mates with the side hole and insert blocks at both ends of the bore body, which are embedded in the sand mold. The function of the partition block is to support the forming space of the side hole, and its structure has good embedding strength and is not easily displaced, which can improve the positional accuracy of the side hole.

[0010] Compared with the prior art, this utility model has the following advantages and effects: This design is a molding die for a rotating base of an industrial robot, which can improve the molding quality of the product, reduce defects, improve the precision of the structure, and help the robot rotate and work with high precision. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall cross-sectional structure of the cast structure.

[0012] Figure 2 yes Figure 1 A partially enlarged structural diagram.

[0013] Figure 3 This is a schematic diagram of the diaphragm block structure.

[0014] Figure 4 This is a schematic diagram of the structure of the rotating base of an industrial robot.

[0015] In the diagram: 1. Outer template, 2. Sand mold, 3. Wax mold, 4. Partition block, 5. Molding cavity, 6. Casting channel, 7. Venting structure, 8. Casting port, 9. Venting port, 10. Pressure holding ring, 11. Runner, 12. Flow inlet, 13. Pressure holding nozzle, 14. Vent channel, 15. Orifice body, 16. Embedded block. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0017] A ductile iron industrial robot rotating base mold casting structure is disclosed. The mold casting structure includes an outer template 1, a sand mold 2, a wax mold 3, and a partition block 4. The outer template 1 is the outer layer of the mold. The interior of the outer template 1 is set as the sand mold 2. The sand mold 2 is provided with a forming cavity 5, which is a space for molten iron to be poured and solidified. The wax mold 3 is filled in the forming cavity 5. The forming hole of the wax mold 3 is filled and connected with the partition block 4. The partition block 4 is embedded in the sand mold 2 connecting the two sides of the forming cavity 5. The sand mold 2 is formed with a casting flow channel 6. The end of the casting flow channel 6 is connected to the forming cavity 5 from the bottom of the mold. The flow end of the forming cavity 5 is also connected with an exhaust structure 7. The exhaust structure 7 is formed in the sand mold 2 and extends upward.

[0018] The outer template 1 forms a rectangular cube enclosure structure, each of which includes an enclosure plate. The edges of the enclosure plates are connected at an angle by fasteners. The top enclosure plate is formed with a casting port 8 and an exhaust port 9. The casting port 8 is set to the casting channel 6, and the exhaust port 9 is set to the exhaust structure 7. A pressure holding ring 10 is also set in the exhaust port 9, and the pressure holding ring 10 is embedded in the inner diameter of the exhaust port 9.

[0019] The casting channel 6 is located in the middle of the mold. Symmetrical molding cavities 5 are arranged on both sides of the casting channel. Each molding cavity 5 is used to cast a base product. Each molding cavity 5 has a separate exhaust structure 7 at its far end. The exhaust structures 7 are set separately and do not communicate with each other.

[0020] The casting channel 6 includes a main channel, a branch channel 11, and a flow inlet 12. The main channel is set with a gradually decreasing diameter from top to bottom. The bottom of the main channel is connected to the branch channel 11, which extends to the molding cavity 5. The molding cavity 5 and the branch channel 11 are connected by the flow inlet 12, which is a flat cone structure.

[0021] The exhaust structure 7 includes a pressure-holding nozzle 13 and an air passage 14. The pressure-holding nozzle 13 is connected to the molding cavity 5. The diameter of the pressure-holding nozzle 13 gradually increases and extends to connect to the air passage 14. The air passage 14 extends upward and communicates with the external environment of the mold.

[0022] The perforated block 4 is an integral structure made of high-temperature resistant material. It has a bore body 15 that matches the side hole and embedded blocks 16 at both ends of the bore body 15. The embedded blocks 16 are embedded in the sand mold 2.

[0023] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary rather than restrictive in all respects. The scope of this invention is defined by the claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0024] Furthermore, it should be understood that although this specification describes the embodiments, not every embodiment contains only one independent technical solution. This description method is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A casting structure for a ductile iron industrial robot rotating base mold, characterized in that: The mold casting structure includes an outer template (1), a sand mold (2), a wax mold (3), and a partition block (4). The outer template (1) is the outer layer of the mold. The interior of the outer template (1) is set as a sand mold (2). The sand mold (2) is provided with a forming cavity (5). The forming cavity (5) is the space for molten iron to be poured and solidified. The wax mold (3) is filled in the forming cavity (5). The partition block (4) is filled and connected at the forming hole of the wax mold (3). The partition block (4) is embedded in the sand mold (2) connecting the two sides of the forming cavity (5). The sand mold (2) is formed with a casting flow channel (6). The end of the casting flow channel (6) is connected to the forming cavity (5) from the bottom of the mold. The flow end of the forming cavity (5) is also connected with an exhaust structure (7). The exhaust structure (7) is formed in the sand mold (2) and extends upward.

2. The ductile iron industrial robot rotating base mold casting structure according to claim 1, characterized in that: The outer template (1) forms a rectangular cube enclosure structure, each of which includes an enclosure plate. The edges of the enclosure plates are connected at an angle by fasteners. The top enclosure plate is formed with a casting port (8) and an exhaust port (9). The casting port (8) is set to correspond to the casting channel (6), and the exhaust port (9) is set to correspond to the exhaust structure (7). A pressure holding ring (10) is also set in the exhaust port (9), and the pressure holding ring (10) is embedded in the inner diameter of the exhaust port (9).

3. The ductile iron industrial robot rotating base mold casting structure according to claim 1, characterized in that: The casting channel (6) is located in the middle of the mold. Symmetrical molding cavities (5) are set on both sides of the casting channel. Each molding cavity (5) is used to cast a base product. Each molding cavity (5) has a separate exhaust structure (7) at its far end. The exhaust structures (7) are set separately and are not interconnected.

4. The ductile iron industrial robot rotating base mold casting structure according to claim 1, characterized in that: The casting channel (6) includes a main channel, a branch channel (11), and a flow inlet (12). The main channel is set with a gradually decreasing diameter from top to bottom. The bottom of the main channel is connected to the branch channel (11). The branch channel (11) extends to the molding cavity (5). The molding cavity (5) and the branch channel (11) are connected by the flow inlet (12). The flow inlet (12) is a flat cone structure.

5. The ductile iron industrial robot rotating base mold casting structure according to claim 1, characterized in that: The exhaust structure (7) includes a pressure-holding nozzle (13) and an air passage (14). The pressure-holding nozzle (13) is connected to the molding cavity (5). The diameter of the pressure-holding nozzle (13) gradually increases and extends to connect to the air passage (14). The air passage (14) extends upward and communicates with the external environment of the mold.

6. The ductile iron industrial robot rotating base mold casting structure according to claim 1, characterized in that: The diaphragm block (4) is an integral structure made of high temperature resistant material. It has a bore body (15) that matches the side hole and an insert block (16) at both ends of the bore body (15). The insert block (16) is embedded in the sand mold (2).

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