Uniform curing and casting device for industrial robot base

Abstract

The utility model provides an industrial robot base uniform solidification casting device, which comprises a plurality of outer templates, an active insulation board, a sand mould, a molding cavity, a casting structure and an exhaust pressure maintaining device, the outer templates are encircled to form a cubic space structure, the space in the outer templates is filled with the sand mould, and the active insulation board is arranged in the molding cavity. An active heat preservation plate is flatly attached between the inner surface of the sand mold and the inner surface of the outer mold plate and blocks heat conduction of the sand mold, a forming cavity is formed in the sand mold, a robot base is formed in the forming cavity, the forming cavity is connected with a casting structure and an exhaust pressure maintaining device, and the casting structure is downwards communicated into the forming cavity from the upper portion of a casting device. The exhaust pressure maintaining device communicates with the forming cavity and communicates with the external environment of the casting device. And the active heat preservation plate is arranged outside the sand mold, temperature-controllable curing can be carried out in the product forming process, and the problem that curing is not uniform due to too fast local cooling is avoided.

Description

Technical Field

[0001] This utility model relates to an improvement of the production device for an industrial robot base, specifically an industrial robot base uniform solidification casting device. 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. Casting is a production process in which molten steel is poured into a mold and solidified. However, the molten steel may not solidify evenly during the solidification process, causing local defects in the product and generating local stresses that affect the structural strength. Furthermore, the uneven wall thickness of the robot base further exacerbates the inconsistency of the solidification process. The resulting defects tend to concentrate in weak points in the structure, directly affecting the robot's service life and safety. Therefore, a casting device is needed to improve the uniformity of solidification. Utility Model Content

[0003] The purpose of this invention is to overcome the above-mentioned deficiencies in the existing technology and to provide a uniform solidification casting device for industrial robot bases.

[0004] The technical solution adopted by this utility model to solve the above problems is as follows: the casting device includes an outer template, an active insulation board, a sand mold, a molding cavity, a casting structure, and an exhaust and pressure holding device. The outer template is composed of multiple pieces that surround and form a cubic spatial structure. The space in the outer template is filled with a sand mold. An active insulation board is also flatly attached between the sand mold and the inner surface of the outer template. The active insulation board blocks the heat conduction of the sand mold. A molding cavity is provided inside the sand mold. A molding robot base is formed inside the molding cavity. The molding cavity is connected to the casting structure and the exhaust and pressure holding device. The casting structure is connected from the upper part of the casting device downward to the molding cavity. The exhaust and pressure holding device is connected to the molding cavity and communicates with the external environment of the casting device. The casting device adopts a sand mold structure with an internal molding cavity. A wax mold can be placed in the molding cavity to maintain its stability. An active insulation board is installed on the outside of the sand mold, which allows for controlled temperature curing during the product molding process. This avoids uneven curing caused by excessively rapid local cooling, thus improving the molding quality. By setting up an exhaust and pressure holding device, the molten steel can be poured and molded under a certain pressure, which can reduce the overflow to the exhaust structure, improve the molding quality, and reduce the need for mold modification.

[0005] Furthermore, the active insulation board includes a base plate and heating elements. The heating elements are mounted on the base plate, and wires from the heating elements are connected to the outside of the base plate. The wires pass through the outside of the outer template and are connected to a control power supply. The active insulation board is integrally fitted onto the outside of the sand mold. The base plate is made of refractory material. The active insulation board uses refractory material as its base, with one side serving as the heating surface and equipped with heating elements. It can achieve unidirectional temperature control, and its wires pass outwards and are connected to the power supply.

[0006] Furthermore, the robot base is formed inverted in a sand mold, with its bottom facing upwards and connected to the casting structure and the venting and pressure-holding device. The bottom surface of the robot base is connected to the remaining casting material. The robot base is cast inverted, placing the parts that need to be repaired and polished at the bottom, which can improve the main surface quality, improve the quality of the product, and facilitate processing. During the casting process, the molten steel forms a confluence effect, which can reduce forming defects.

[0007] Furthermore, the casting structure includes a main channel, a casting ring, and a casting gate. The casting gate is formed on the uppermost outer mold and has an open structure. A casting ring is positioned downwards below the casting gate, with a flow channel in the middle. The lower part of the casting ring connects to the main channel, which is located within the sand mold. The diameter of the main channel gradually decreases and connects to the forming cavity. The diameter at the end of the main channel is smaller than the forming area of ​​the forming cavity at that location. The main channel is the forming part of the sand mold. The casting ring is used to separate the outer mold and the sand mold using a separating material. The open structure of the casting gate allows for the connection of the molten steel flow structure. The bottom end of the main channel has a narrowing structure, facilitating material cutting after forming.

[0008] Furthermore, the exhaust and pressure-maintaining device includes a pneumatic pipe, an exhaust port, and a one-way pneumatic valve. The pneumatic pipe is embedded in the sand mold, extends upward, and connects to the space of the forming cavity. The upper part of the pneumatic pipe is connected to the exhaust port, which is formed on the outer template. A one-way pneumatic valve is connected to the exhaust port, releasing air pressure outward in one direction. The structure of the pneumatic pipe being embedded in the sand mold prevents air pressure from escaping into the gaps of the sand mold, which is beneficial for controlling the pressure in the forming cavity. The exhaust port is used to connect to the one-way pneumatic valve, realizing one-way controllable air pressure.

[0009] Furthermore, the outer template is a flat plate structure, with the edges of adjacent outer templates connected and fixed together by fasteners. The upper part of the outer template has a corresponding casting structure, a casting port for venting and pressure holding, and a one-way air pressure valve. The outer template forms an external protective structure, which can prevent deformation of the sand mold during the molding and casting process, improve the molding quality, and increase the yield.

[0010] Compared with the prior art, this utility model has the following advantages and effects: This design is an improvement of the device for optimizing the casting quality of an industrial robot base. It can effectively balance the uniformity of curing temperature, improve the quality of product molding, reduce molding defects, reduce internal stress of the product, extend the service life of the product, and improve the rigidity of the product itself. Attached Figure Description

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

[0012] Figure 2 This is a structural diagram of the robot's base.

[0013] In the diagram: 1. Outer template, 2. Active insulation board, 3. Sand mold, 4. Molding cavity, 5. Casting structure, 6. Exhaust and pressure holding device, 7. Robot base, 8. Base plate, 9. Heating element, 10. Wire, 11. Main channel, 12. Casting collar, 13. Casting port, 14. Air pressure pipe, 15. Exhaust port, 16. Air pressure check valve. Detailed Implementation

[0014] 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.

[0015] A uniform solidification casting device for an industrial robot base, characterized in that: the casting device includes an outer template 1, an active insulation board 2, a sand mold 3, a molding cavity 4, a casting structure 5, and an exhaust and pressure holding device 6. The outer template 1 is composed of multiple pieces forming a cubic spatial structure. The space in the outer template 1 is filled with the sand mold 3. An active insulation board 2 is also flatly attached between the inner surface of the sand mold 3 and the outer template 1. The active insulation board 2 blocks the heat conduction of the sand mold 3. A molding cavity 4 is provided inside the sand mold 3. The robot base 7 is formed in the molding cavity 4. The molding cavity 4 is connected to the casting structure 5 and the exhaust and pressure holding device 6. The casting structure 5 extends downward from the upper part of the casting device into the molding cavity 4. The exhaust and pressure holding device 6 is connected to the molding cavity 4 and communicates with the external environment of the casting device.

[0016] The active insulation board 2 includes a base plate 8 and a heating element 9. The heating element 9 is provided on the base plate 8. The wire 10 of the heating element 9 is connected to the outside of the base plate 8. The wire 10 passes through the outside of the outer template 1 and is connected to the control power supply. The active insulation board 2 is integrally attached to the outside of the sand mold 3. The base plate 8 is formed using refractory material.

[0017] The robot base 7 is formed upside down in the sand mold 3, with its bottom facing upward and connected to the casting structure 5 and the venting and pressure holding device 6. The bottom surface of the robot base 7 is connected to the casting residue.

[0018] The casting structure 5 includes a main channel 11, a casting ring 12, and a casting port 13. The casting port 13 is formed on the uppermost outer template 1 and is an open structure. The casting ring 12 is set downwards at the lower part of the casting port. The middle part of the casting ring 12 is a flow channel. The lower part of the casting ring is connected to the main channel 11. The main channel 11 is set in the sand mold 3. The diameter of the main channel 11 gradually decreases and is connected to the forming cavity 4. The diameter of the end of the main channel 11 is smaller than the forming area of ​​the forming cavity 4 at that point.

[0019] The exhaust and pressure holding device 6 includes a pressure pipe 14, an exhaust port 15, and a pressure one-way valve 16. The pressure pipe 14 is embedded in the sand mold 3. The pressure pipe 14 extends upward and connects to the space of the forming cavity 4. The upper part of the pressure pipe 14 is connected to the exhaust port 15. The exhaust port 15 is formed on the outer template 1. The pressure one-way valve 16 is connected to the exhaust port 15. The pressure one-way valve 16 releases air pressure outward in one direction.

[0020] The outer template 1 is a flat plate structure. The edges of adjacent outer templates 1 are connected and fixed together by fasteners. The upper part of the outer template 1 is formed with a casting port of the corresponding casting structure 5, the exhaust and pressure holding device 6, and the air pressure one-way valve 16.

[0021] 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.

[0022] 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 device for uniform solidification and casting of an industrial robot base, characterized in that: The casting device includes an outer template (1), an active insulation board (2), a sand mold (3), a molding cavity (4), a casting structure (5), and an exhaust and pressure holding device (6). The outer template (1) consists of multiple pieces that surround each other to form a cubic space structure. The space in the outer template (1) is filled with the sand mold (3). An active insulation board (2) is also flatly attached between the inner surface of the sand mold (3) and the outer template (1). The active insulation board (2) blocks the heat conduction of the sand mold (3). A molding cavity (4) is provided inside the sand mold (3). A robot base (7) is formed inside the molding cavity (4). The molding cavity (4) is connected to the casting structure (5) and the exhaust and pressure holding device (6). The casting structure (5) is connected from the upper part of the casting device downward to the molding cavity (4). The exhaust and pressure holding device (6) is connected to the molding cavity (4) and communicates with the external environment of the casting device.

2. The industrial robot base uniform solidification casting device according to claim 1, characterized in that: The active insulation board (2) includes a base plate (8) and a heating element (9). The heating element (9) is provided on the base plate (8). The wire (10) of the heating element (9) is connected to the outside of the base plate (8). The wire (10) passes through the outside of the outer template (1) and is connected to the control power supply. The active insulation board (2) is integrally attached to the outside of the sand mold (3). The base plate (8) is formed by refractory material.

3. The industrial robot base uniform solidification casting device according to claim 1, characterized in that: The robot base (7) is inverted in the sand mold (3) and its bottom is set upward and connected to the casting structure (5) and the venting and pressure holding device (6). The bottom surface of the robot base (7) is connected to the casting residue.

4. The industrial robot base uniform solidification casting device according to claim 1, characterized in that: The casting structure (5) includes a main channel (11), a casting ring (12), and a casting port (13). The casting port (13) is formed on the uppermost outer template (1). The casting port (13) is an open structure. The casting ring (12) is set downward at the lower part of the casting port. The middle part of the casting ring (12) is a flow channel. The lower part of the casting ring is connected to the main channel (11). The main channel (11) is set in the sand mold (3). The diameter of the main channel (11) gradually decreases and is connected to the forming cavity (4). The end diameter of the main channel (11) is smaller than the forming area of ​​the forming cavity (4) at that location.

5. The industrial robot base uniform solidification casting device according to claim 1, characterized in that: The exhaust pressure holding device (6) includes a pressure pipe (14), an exhaust port (15), and a pressure one-way valve (16). The pressure pipe (14) is embedded in the sand mold (3). The pressure pipe (14) extends upward and connects to the space of the forming cavity (4). The upper part of the pressure pipe (14) is connected to the exhaust port (15). The exhaust port (15) is formed on the outer template (1). The pressure one-way valve (16) is connected to the exhaust port (15). The pressure one-way valve (16) releases air pressure outward in one direction.

6. The industrial robot base uniform solidification casting device according to claim 1, characterized in that: The outer template (1) is a flat plate structure. The edges of adjacent outer templates (1) are connected and fixed together by fasteners. The upper part of the outer template (1) is formed with a casting port of the corresponding casting structure (5), the exhaust pressure holding device (6), and a one-way air pressure valve (16).

Images