Robot complex part casting green sand process equipment and production method thereof

Abstract

The invention relates to robot complex part casting green sand process equipment and a production method thereof, and relates to the technical field of green sand processes, the robot complex part casting green sand process equipment comprises a first conveying platform and a pouring template, two sets of mounting fixing frames are arranged above the first conveying platform, and a rotating assembly is mounted between the two sets of mounting fixing frames; and a first motor chamber is arranged in the first conveying platform, a pouring formwork is placed above the rotating assembly, and a placement extension platform is arranged on the side, away from the rotating assembly, of the mounting fixing frame. The graphite chilling block and the first cast iron chilling block can remarkably increase the cooling rate of the surface of a casting, refine grains and greatly improve the hardness and abrasion resistance of the surface of the casting, then the built-in iron core plays a key role in improving the internal organization structure of the casting and enhancing the overall performance, fine control over the casting solidification process is achieved, and the casting quality is improved. The harsh requirements of complex parts on the performance of different parts are perfectly met.

Description

Technical Field

[0001] This application relates to the field of wet casting sand technology, and in particular to wet casting sand process equipment and production methods for casting complex robot parts. Background Technology

[0002] Moist mold sand, also known as clay wet molding sand, refers to sand mixed with bentonite as a binder, water, and other additives in casting production. This mixture can then be used for molding and core making, and the sand mold (core) does not require drying and can be directly poured. Moist mold sand casting is the oldest and most widely used casting process. Despite the rapid development of various chemically bonded sands, moist mold sand remains the most important molding material. Its wide applicability and large consumption are unmatched by any other molding material. Moist mold sand accounts for approximately 60% to 70% of all sand mold usage. In the existing technology, the relevant technology for the wet molding sand process can be referenced in Chinese Patent Publication No. CN107303598B, which discloses a wet molding sand box molding machine, including a molding frame, the box exit end of the box opening conveyor chain corresponding to the box inlet side of the molding frame, a molding machine box inlet robot installed on the box inlet side of the box molding machine, and a molding machine box exit robot installed on the box exit side; the box exit side of the molding frame corresponds to the box inlet end of the box closing conveyor chain; a molding machine worktable is installed inside the molding frame, and a sand shot machine is installed outside the molding frame, with the sand shot nozzle corresponding to the molding machine worktable. This solves the problem that the working principle of the wet molding sand box molding machine is to use compressed air to simultaneously and evenly inject molding sand into the upper and lower sand boxes and then apply external pressure for overall compaction. This method not only significantly improves work efficiency but also reduces loose sand and dust during the molding process. This molding method can meet process requirements without producing misaligned edges and can ensure sufficient core setting time.

[0003] In the process of developing this application, the inventors discovered the following problems with the prior art: The complex casting components of the robot are mainly used to fix or connect the robot's body and hand. They can be used as a whole or installed independently. The robot's electromechanical command system is installed inside, and it is an essential channel for electromechanical control circuits. However, when using the molded sand for manufacturing, the temperature during the pouring process cannot be confirmed. As a result, the cooling rate of the pouring liquid after pouring cannot be confirmed, and the casting is prone to defects such as sand inclusion, sand trapping, and porosity. Summary of the Invention

[0004] The purpose of this application is to provide equipment and production methods for casting complex robot parts using a wet-sand casting process.

[0005] The technical solution provided in this application for the casting molded sand process equipment and production method for complex robot parts adopts the following: A robotic casting equipment for complex parts using a wet-sand process includes a first conveying platform and a casting template. Two sets of mounting brackets are positioned above the first conveying platform, with a rotating assembly installed between the two sets of mounting brackets. A first motor chamber is located inside the first conveying platform. A casting template is placed above the rotating assembly. An extension platform is positioned on the side of the mounting brackets away from the rotating assembly. A mold-closing assembly is bolted onto the extension platform. A casting box is positioned on the side of the mold-closing assembly away from the rotating assembly. A robotic arm is positioned on the side of the casting box away from the mold-closing assembly. A second conveying platform is positioned on the side of the extension platform away from the mounting brackets. The casting template includes a lower template, an upper template, and a sand core.

[0006] By adopting the above technical solution, the coordinated operation of the first and second conveyor platforms realizes the automated conveying of the casting template and the casting. Then, the first conveyor platform transports the casting template to be processed to the designated position. After casting is completed, the second conveyor platform quickly transports the casting away, ensuring the continuity and automation of casting production. This design can significantly improve production efficiency, reduce manual intervention, reduce labor intensity and production costs, and make the production process more standardized and regulated. In addition, the core-making machine set up next to the second conveyor platform, whose structure is specifically referred to as CNN222001794U, realizes the seamless connection of sand core production and supply, forming an organic whole with the entire casting process equipment, further improving the synergy and efficiency of production.

[0007] The upper template includes a main pouring gate, a secondary pouring gate, connecting columns, and positioning plug-in columns. The main pouring gate is located at the top of the upper template, and the secondary pouring gate is located on the side of the main pouring gate. Connecting columns are located on the four sides of the upper template, and positioning plug-in columns are located on the side of the connecting columns away from the secondary pouring gates.

[0008] By adopting the above technical solution, the upper mold is equipped with a main pouring gate and a secondary pouring gate. In the actual casting process, different parts of the machine parts have different requirements for the filling speed and pressure of the molten metal. Through the coordinated work of the main pouring gate and the secondary pouring gate, multi-directional and differentiated pouring of the molten metal can be achieved, which greatly improves the efficiency and uniformity of the molten metal filling the cavity. It can also effectively reduce the probability of common defects such as porosity and shrinkage cavities in the castings, and fundamentally ensure the quality and integrity of the castings, thereby reducing the occurrence of defective parts.

[0009] The lower template includes a sand core, insertion holes, and sand discharge holes. The casting area of ​​the lower template is filled with a sand core. Insertion holes are provided on the four sides of the upper part of the lower template. Sand discharge holes are provided on the sides of the insertion holes. The upper template and the lower template are connected by connecting columns and insertion holes.

[0010] By adopting the above technical solution, the positioning pins of the upper template and the insertion holes of the lower template fit together tightly, forming a mechanical hard limit with an error of ≤0.1mm. This eliminates the problems of flash and dimensional deviation caused by template misalignment in traditional casting, reducing the scrap rate by more than 15%. It achieves high-precision fitting between the upper and lower templates, ensuring accurate positioning between them during the mold closing process using the mold closing assembly. This eliminates the problem of casting dimensional deviation caused by template misalignment from the source. At the same time, its stable connection method can withstand the strong pressure during pouring, ensuring a smooth and orderly casting process. The addition of connecting pins further facilitates stable positioning, making the overall structure more stable and reliable during the mold closing process.

[0011] The sand core includes a graphite chill, a first cast iron chill, an annular cast iron chill, and an internal iron core. Graphite chills are embedded on the inner and outer surfaces of the sand core. The graphite chills are semi-circular graphite. The first cast iron chill is placed on the outer surface of the sand core. An annular cast iron chill is placed on the side of the first cast iron chill. An internal iron core is placed inside the sand core.

[0012] By adopting the above technical solution, graphite chills are pre-embedded on the inner and outer surfaces of the sand core. The high thermal conductivity of the graphite chills accelerates local cooling. The first cast iron chill has strong heat storage capacity, extending the heat preservation time of the high-temperature zone. The chill combination design can directionally control the cooling gradient of the casting, reducing shrinkage cavities and cracks. It is suitable for complex thin-walled parts. The first cast iron chill is arranged on the outer surface of the sand core, and annular cast iron chills are placed on the side. An internal iron core is placed inside. The internal iron core is embedded in the sand core, improving the resistance to molten metal erosion and preventing the sand core from breaking or deforming. It is especially suitable for long-flow casting, avoiding the scrapping of castings due to sand core collapse. It can also precisely control the cooling rate of different parts of the casting. The graphite chills and the first cast iron chill can significantly accelerate the cooling rate of the casting surface, refine the grains, and greatly improve the hardness and wear resistance of the casting surface. The internal iron core plays a key role in improving the internal structure of the casting and enhancing the overall performance. It has achieved precise control of the casting solidification process and perfectly meets the stringent requirements of complex parts for the performance of different parts.

[0013] The mold clamping assembly is provided with three sets of support and fixing rods located below the rotating assembly, and the three sets of support and fixing rods are placed symmetrically along the rotating assembly.

[0014] By adopting the above technical solution, the three sets of support and fixing rods symmetrically distributed below the mold closing assembly provide stability for the mold closing assembly during the mold closing process. During the mold closing process, the shaking and displacement of the mold closing assembly can be effectively avoided, ensuring that the mold closing operation is accurate and error-free, and providing strong support for the production of high-precision robot complex parts.

[0015] The mold assembly includes a mounting frame, a second motor chamber, a first slide rail, and a second slide rail. The second motor chamber is bolted to both sides of the inner wall of the mounting frame, and the first slide rail is bolted to the top of the second motor chamber. The second slide rail is connected to the side of the first slide rail.

[0016] The mold clamping assembly also includes a shock absorber frame, a fixed frame, a telescopic rod, a clamping frame, and a feeding door. A fixed frame is installed between the two sets of shock absorbers. A telescopic rod is connected through the inside of the fixed frame. A clamping frame is movably connected to the lower part of the telescopic rod by bolts. A feeding door is provided on the side of the mounting frame away from the clamping frame.

[0017] By adopting the above technical solution, the mounting frame of the mold clamping assembly is equipped with second motor chambers on both sides. Driven by the motors in the second motor chambers, the clamping frame can achieve precise positioning and flexible movement. Whether clamping casting templates of different specifications or making fine adjustments during operation, it can easily handle the situation. The addition of the shock-absorbing frame effectively reduces vibration and impact during movement, protecting the key components of the equipment and avoiding potential damage to the castings, thus significantly extending the service life of the equipment. The fixed frame between the two sets of shock-absorbing frames, the telescopic rod running through them, and the clamping frame below together constitute a highly efficient clamping system. During mold closing, the shock-absorbing frame absorbs mechanical vibration, and the symmetrical distribution of the support fixing rods ensures uniform pressure transmission during mold closing, preventing sand core displacement or chill loosening caused by vibration, and improving the internal density of the castings. The telescopic rod can be flexibly adjusted according to the size of the casting template, greatly expanding the scope of use of the equipment. The feeding gate on one side of the mounting frame is used for moving the upper template, ensuring continuous and efficient casting process and effectively improving overall production efficiency.

[0018] The rotating assembly includes a rotating bracket and a rotating shaft, and the rotating shaft is connected at the center of the two sets of rotating brackets. The rotating bracket and the rotating shaft are connected by a bearing to form a rotating connection structure. A core-making machine is provided on the side of the second conveying platform away from the first conveying platform.

[0019] By adopting the above technical solution, the rotating assembly consists of a rotating bracket and a rotating shaft, which are connected by bearings. This allows the rotating assembly to transport materials stably during the conveying process and adjust the conveying speed according to the mold's condition. The mold can also be positioned on the first conveying platform to place the sand core. In casting operations, it is often necessary to adjust the pouring mold. The rotating assembly, in conjunction with the operator, allows for flexible control of the pouring mold's position according to the actual production situation, greatly improving the equipment's operational convenience and production efficiency. This adds more flexibility and possibilities to the casting process of complex parts. The rotating bracket and rotating shaft are connected by high-precision bearings, reducing transmission resistance by 40%, extending equipment life, reducing motor load, and making it suitable for continuous hourly production modes.

[0020] A method for producing complex robot parts using a wet-sand casting process, comprising the following steps.

[0021] Step 1: First, the sand core is produced. The template of the sand making machine is opened and then cleaned. The graphite chill, first cast iron chill, annular cast iron chill and inner iron core that need to be connected to the sand core are placed in the corresponding positions of the template. Then the template is closed and the sand core is produced. The produced sand core carries the graphite chill, first cast iron chill, annular cast iron chill and inner iron core. Then the sand core is pre-treated. Step 2: Then the lower mold of the casting template is conveyed along the first conveying platform, and the upper mold of the casting template is conveyed along the second conveying platform. At this time, the rotating shaft of the rotating component is driven by the motor in the first motor chamber of the first conveying platform, so that the rotating shaft rotates and drives the lower mold to move. Then, when the lower mold moves to the mold closing component, the sand core is placed inside the lower mold. Step 3: The lower template with the sand core is then placed and continues to be conveyed along the first conveying platform. When it is conveyed to the bottom of the mold closing assembly, the fixed support rod under the mold closing assembly is raised, and the lower template is raised and separated from the rotating assembly of the first conveying platform. At this time, the clamping frame of the mold closing assembly moves along the first slide rail and the second slide rail through the telescopic rod and the fixed frame. The telescopic rod drives the clamping frame to move and move the clamping frame to the connecting columns set on both sides of the upper template above the second conveying platform. Then the upper template is raised and connected through the positioning insertion column and insertion hole between the upper template and the lower template to complete the mold closing. Step 4: Then, the completed casting template continues to be transported along the first conveying platform. When it is transported to the bottom of the casting box, it is lifted again and separated from the first conveying platform. The casting liquid at 1500-1520℃ is injected through the main and auxiliary casting ports of the upper template. The initial casting temperature is 1380±10℃, and the final casting temperature is not lower than 1340℃. Step 5: After the pouring is completed, the molded pouring template comes into contact with the first conveyor platform and is then moved by the first conveyor platform. When it moves to the end of the first conveyor platform, the robot arm clamps the molded pouring template and then moves the pouring template away from the first conveyor platform.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The coordinated operation of the first and second conveyor platforms enables automated conveying of the casting template and castings. The first conveyor platform then transports the casting template to be processed to the designated position. After casting is completed, the second conveyor platform quickly transports the casting away, ensuring the continuity and automation of casting production. This design can significantly improve production efficiency, reduce manual intervention, lower labor intensity and production costs, and make the production process more standardized and regulated. It also achieves seamless integration of sand core production and supply, forming an organic whole with the entire casting process equipment, further enhancing the synergy and efficiency of production. 2. Eliminates flash and dimensional deviation problems caused by template misalignment in traditional casting, reducing scrap rate by more than 15%. Achieves high-precision fitting of the upper and lower templates, ensuring accurate positioning between the upper and lower templates during mold closing via the mold closing assembly. This eliminates casting dimensional deviations caused by template misalignment at the source. At the same time, its stable connection method can withstand the strong pressure during pouring, ensuring a smooth and orderly casting process. The addition of connecting columns further facilitates stable positioning, making the overall structure more stable and reliable during mold closing. 3. Graphite chills are embedded on the inner and outer surfaces of the sand core, utilizing their high thermal conductivity to accelerate localized cooling. The first cast iron chill has strong heat storage capacity, extending the holding time in high-temperature zones. The chill combination design can directionally control the cooling gradient of the casting, reducing shrinkage cavities and cracks. It is suitable for complex thin-walled parts. The first cast iron chill is arranged on the outer surface of the sand core, and annular cast iron chills are placed on the sides. An internal iron core is placed inside, embedded in the sand core, which enhances the resistance to molten metal erosion and prevents the sand core from breaking or deforming. It is especially suitable for long-flow casting, avoiding casting scrap due to sand core collapse. It can also precisely control the cooling rate of different parts of the casting. Graphite chills and first cast iron chills can significantly accelerate the cooling rate of the casting surface, refine the grains, and greatly improve the surface hardness and wear resistance of the casting. The internal iron core plays a key role in improving the internal microstructure of the casting and enhancing its overall performance. It has achieved precise control over the solidification process of the casting, perfectly meeting the stringent performance requirements of complex parts for different parts. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a schematic diagram of the placement extension platform structure according to an embodiment of this application; Figure 3 This is a schematic diagram of the support and fixing rod structure according to an embodiment of this application; Figure 4 This is a schematic diagram of the mold-closing component structure according to an embodiment of this application; Figure 5 This is a schematic diagram of the upper template structure according to an embodiment of this application; Figure 6 This is a front cross-sectional view of the mold clamping assembly according to an embodiment of this application; Figure 7 This is a schematic diagram of the chip-making machine structure according to an embodiment of this application; Explanation of reference numerals in the attached drawings: 1. First conveying platform; 2. Mounting bracket; 3. Rotating assembly; 301. Rotating support; 302. Rotating shaft; 4. First motor compartment; 5. Extension platform; 6. Second conveying platform; 7. Casting template; 701. Lower template; 702. Upper template; 703. Main pouring gate; 704. Secondary pouring gate; 705. Connecting column; 706. Positioning insertion column; 707. Sand core; 708. Insertion hole; 709. 8. Sand discharge hole; 801. Mold closing assembly; 802. Mounting frame; 803. Second motor chamber; 804. First slide rail; 805. Second slide rail; 806. Shock absorber frame; 807. Fixed frame; 808. Telescopic rod; 809. Clamping frame; 8000. Feeding gate; 9. Casting box; 10. Robot arm; 11. Support fixing rod; 12. Graphite chill; 13. First cast iron chill; 14. Ring cast iron chill; 15. Internal iron core; 16. Core making machine. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1 - Appendix Figure 7 This application will be described in further detail below.

[0025] Example: A robotic complex parts casting mold sand process equipment includes a first conveying platform 1 and a casting template 7. Two sets of mounting brackets 2 are installed above the first conveying platform 1, and a rotating assembly 3 is installed between the two sets of mounting brackets 2. A first motor chamber 4 is located inside the first conveying platform 1. A casting template is placed above the rotating assembly 3. An extension platform 5 is located on the side of the mounting brackets 2 away from the rotating assembly 3. A mold clamping assembly 8 is bolted onto the extension platform 5. A casting box 9 is located on the side of the mold clamping assembly 8 away from the rotating assembly 3. A robot arm 10 is located on the side of the casting box 9 away from the mold clamping assembly 8. A second conveying platform 6 is located on the side of the extension platform 5 away from the mounting brackets 2. The casting template 7 includes a lower template 701 and an upper template 702. The coordinated operation of the template 702 and sand core 707, the first conveying platform 1 and the second conveying platform 6 realizes the automated conveying of the casting template 7 and the casting. Then, the first conveying platform 1 conveys the casting template 7 to be processed to the designated position. After casting is completed, the second conveying platform 6 quickly transports the casting away, ensuring the continuity and automation of casting production. This design can greatly improve production efficiency, reduce manual intervention, reduce labor intensity and production costs, and make the production process more standardized and regulated. In addition, the core-making machine 16 set next to the second conveying platform 6, whose structure is specifically referred to in CN222001794U, realizes the seamless connection of sand core 707 production and supply, forming an organic whole with the entire casting process equipment, further improving the synergy and efficiency of production.

[0026] The upper formwork 702 includes a main pouring gate 703, a secondary pouring gate 704, connecting columns 705, and positioning insertion columns 706. The main pouring gate 703 is located at the top of the upper formwork 702, and the secondary pouring gate 704 is located on the side of the main pouring gate 703. Connecting columns 705 are located on all four sides of the upper formwork 702, and positioning insertion columns 706 are located on the side of each connecting column 705 furthest from the secondary pouring gate 704. The upper formwork 702 is equipped with a main pouring gate 703 and a secondary pouring gate 704. 04. In the actual casting process, different parts of the machine parts have different requirements for the filling speed and pressure of the molten metal. By working together with the main pouring gate 703 and the auxiliary pouring gate 704, multi-directional and differentiated pouring of molten metal can be achieved, which greatly improves the efficiency and uniformity of molten metal filling the cavity. It can also effectively reduce the probability of common defects such as porosity and shrinkage cavities in the castings, and fundamentally ensure the quality and integrity of the castings, so as to reduce the occurrence of defective parts.

[0027] The lower template 701 includes a sand core 707, insertion holes 708, and sand discharge holes 709. The sand core 707 is placed in the pouring area of ​​the lower template 701. Insertion holes 708 are provided on the four upper sides of the lower template 701, and sand discharge holes 709 are provided on the sides of each insertion hole 708. The upper template 702 and the lower template 701 are connected by connecting posts 705 and insertion holes 708. The positioning insertion posts 706 of the upper template 702 are tightly fitted with the insertion holes 708 of the lower template 701, forming a mechanical hard limit with an error ≤0.1mm, eliminating... In traditional casting, issues such as flash and dimensional deviations caused by template misalignment are eliminated. The scrap rate is reduced by more than 15%. High-precision fitting of the upper template 702 and lower template 701 is achieved, ensuring accurate positioning between the upper template 702 and lower template 701 during mold closing via the mold closing assembly 8. This eliminates casting dimensional deviations caused by template misalignment at the source. At the same time, its stable connection method can withstand the strong pressure during pouring, ensuring a smooth and orderly casting process. The addition of the connecting column 705 further facilitates stable positioning, making the overall structure of the pouring template 7 more stable and reliable during mold closing.

[0028] The sand core 707 comprises a graphite chill 12, a first cast iron chill 13, an annular cast iron chill 14, and an internal iron core 15. Graphite chills 12, which are semi-circular graphite, are embedded on the inner and outer surfaces of the sand core 707. The first cast iron chill 13 is placed on the outer surface of the sand core 707, and an annular cast iron chill 14 is placed on the side of the first cast iron chill 13. The internal iron core 15 is placed inside the sand core 707. The graphite chills 12 are embedded on both the inner and outer surfaces of the sand core 707, utilizing their high thermal conductivity to accelerate localized cooling. The first cast iron chill 13 has strong heat storage capacity, extending the holding time in high-temperature zones. This chill assembly design allows for directional control of the cooling gradient of the casting, reducing shrinkage cavities and cracks, and is suitable for complex thin-walled parts. The outer surface of the sand core 707 is covered with a first cast iron chill 13, and the side is equipped with an annular cast iron chill 14. An internal iron core 15 is placed inside. The internal iron core 15 is embedded in the sand core 707 to improve the resistance to molten metal erosion and prevent the sand core 707 from breaking or deforming. It is especially suitable for long-flow casting and avoids the scrapping of castings caused by the collapse of the sand core 707. It can also precisely control the cooling rate of different parts of the casting. The graphite chill 12 and the first cast iron chill 13 can significantly accelerate the cooling rate of the casting surface, refine the grains, and greatly improve the hardness and wear resistance of the casting surface. The internal iron core 15 plays a key role in improving the internal structure of the casting and enhancing the overall performance. It has achieved precise control of the casting solidification process and perfectly meets the stringent requirements of complex parts for the performance of different parts.

[0029] The mold clamping assembly 8 is located below the rotating assembly 3 and has three sets of supporting and fixing rods 11. The three sets of supporting and fixing rods 11 are symmetrically placed along the rotating assembly 3. The three sets of supporting and fixing rods 11 symmetrically distributed below the mold clamping assembly 8 provide stability for the mold clamping assembly 8 during the mold clamping process. During the mold clamping process, it can effectively avoid the shaking and displacement of the mold clamping assembly 8, and ensure that the mold clamping operation is accurate and error-free. Its stable mold clamping is a key prerequisite for ensuring the dimensional accuracy of the casting and provides strong support for the production of high-precision robot complex parts.

[0030] The mold assembly 8 includes a mounting bracket 801, a second motor chamber 802, a first slide rail 803, and a second slide rail 804. The second motor chamber 802 is bolted to both sides of the inner wall of the mounting bracket 801, and the first slide rail 803 is bolted to the top of the second motor chamber 802. The second slide rail 804 is connected to the side of the first slide rail 803.

[0031] The mold clamping assembly 8 also includes a shock-absorbing frame 805, a fixed frame 806, a telescopic rod 807, a clamping frame 808, and a feeding gate 809. A fixed frame 806 is installed between two sets of shock-absorbing frames 805, and a telescopic rod 807 is internally connected to the fixed frame. The clamping frame 808 is movably connected to the lower part of the telescopic rod 807 via bolts. A feeding gate 809 is located on the side of the mounting frame 801 away from the clamping frame 808. Second motor chambers 802 are equipped on both sides of the mounting frame 801 of the mold clamping assembly 8. Driven by motors in the second motor chambers 802, the clamping frame 808 can achieve precise positioning and flexible movement. Whether clamping different sizes of casting templates 7 or making fine adjustments during operation, it can easily handle the situation. The addition of the shock-absorbing frame 805 effectively reduces vibration and impact during movement. This system protects the equipment's critical components and avoids potential damage to the castings, significantly extending the equipment's service life. The fixed frame 806 between the two sets of shock absorbers 805, the telescopic rod 807 running through them, and the clamping frame 808 below together form a highly efficient clamping system. During mold closing, the shock absorbers 805 absorb mechanical vibrations, and the symmetrically distributed support rods 11 ensure uniform pressure transmission during mold closing, preventing displacement of the sand core 707 or loosening of the chills due to vibration, thus improving the internal density of the castings. The telescopic rod 807 can be flexibly adjusted according to the size of the casting template 7, greatly expanding the equipment's application range. The feeding door 809 on one side of the mounting frame 801 is used for moving the upper template 702, ensuring continuous and efficient casting and effectively improving overall production efficiency.

[0032] The rotating assembly 3 includes a rotating bracket 301 and a rotating shaft 302. The rotating shaft 302 is connected at the center of the two sets of rotating brackets 301. The rotating brackets 301 and the rotating shaft 302 are connected by bearings to form a rotating connection structure. The core-making machine 16 is set on the side of the second conveying platform 6 away from the first conveying platform 1. The rotating assembly 3 is composed of the rotating brackets 301 and the rotating shaft 302 and is connected by bearings to achieve rotation. This allows the rotating assembly 3 to transport materials stably during the conveying process and adjust the conveying speed and stop the template on the first conveying platform 1 according to the template condition to complete the placement of the sand core 707. In the casting operation, it is often necessary to adjust the pouring template 7. The rotating assembly 3, together with the operator, can flexibly control the position of the pouring template 7 according to the actual production situation, which greatly improves the ease of operation and production efficiency of the equipment and adds more flexibility and possibilities to the casting process of complex parts. The rotating brackets 301 and the rotating shaft 302 are connected by high-precision bearings, which reduces the transmission resistance by 40%, extends the equipment life, reduces the motor load, and is suitable for continuous 24-hour production mode.

[0033] Equipment and production method for casting complex robot parts using a wet mold sand process, the production method including the following steps.

[0034] Step 1: First, the production of sand core 707 is carried out. The template of the sand making machine is opened and then cleaned. The graphite chill 12, the first cast iron chill 13, the annular cast iron chill 14 and the inner iron core 15 that need to be connected to the sand core 707 are placed in the corresponding positions of the template. Then the template is closed and the sand core 707 is produced. The produced sand core 707 carries the graphite chill 12, the first cast iron chill 13, the annular cast iron chill 14 and the inner iron core 15. Then the sand core 707 is pre-treated. Step 2: Then, the lower mold 701 of the casting mold 7 is conveyed along the first conveying platform 1, and the upper mold 702 of the casting mold 7 is conveyed along the second conveying platform 6. At this time, the rotating shaft 302 of the rotating component 3 is driven by the motor in the first motor chamber 4 inside the first conveying platform 1, so that the rotating shaft 302 rotates and drives the lower mold 701 to move. Then, the lower mold 701 moves to the mold closing component 8, and the sand core 707 is placed inside the lower mold 701. Step 3: Then, the lower template 701 of the sand core 707 continues to be conveyed along the first conveying platform 1. When it is conveyed to the bottom of the mold closing assembly 8, the fixed support rod 11 under the mold closing assembly 8 is raised, and the lower template 701 is raised and separated from the rotating assembly 3 of the first conveying platform 1. At this time, the clamping frame 808 of the mold closing assembly 8 moves along the first slide rail 803 and the second slide rail 804 through the telescopic rod 807 and the fixed frame 806. At this time, the telescopic rod 807 drives the clamping frame 808 to move and move the clamping frame 808 to the connecting columns 705 set on both sides of the upper template 702 above the second conveying platform 6. Then the upper template 702 is raised and connected through the positioning insertion column 706 and insertion hole 708 between the upper template 702 and the lower template 701 to complete the mold closing of the template. Step 4: Then, the casting template 7, after the mold is closed, continues to be transported along the first conveying platform 1. When it is transported to the bottom of the casting box 9, it is lifted again and separated from the first conveying platform 1. The casting liquid at 1500-1520℃ is injected through the main casting port 703 and the auxiliary casting port 704 of the upper template 702. The initial casting temperature is 1380±10℃, and the final casting temperature is not lower than 1340℃. Step 5: After the pouring is completed, the molded pouring template 7 comes into contact with the first conveying platform 1 and is then moved by the first conveying platform 1. When it moves to the end of the first conveying platform 1, the robot arm 10 clamps the molded pouring template 7 and then moves the pouring template 7 away from the first conveying platform 1.

[0035] The implementation principle of this application embodiment is as follows: First, the sand core 707 is produced. The template of the sand making machine is opened, and then the template is cleaned. The graphite chill 12, the first cast iron chill 13, the annular cast iron chill 14 and the built-in iron core 15 that need to be connected to the sand core 707 are placed in the corresponding positions of the template. Then the template is closed, and the sand core 707 is produced. The produced sand core 707 carries the graphite chill 12, the first cast iron chill 13, the annular cast iron chill 14 and the built-in iron core 15. Then the sand core 707 is pre-treated. Then the lower mold 701 of the casting mold 7 is conveyed along the first conveying platform 1, while the upper mold 702 of the casting mold 7 is conveyed along the second conveying platform 6. At this time, the rotating shaft 302 of the rotating component 3 is driven by the motor in the first motor chamber 4 inside the first conveying platform 1, so that the rotating shaft 302 rotates and drives the lower mold 701 to move. Then, the lower mold 701 moves to the mold closing component 8, and the sand core 707 is placed inside the lower mold 701. Then, the lower template 701, which holds the sand core 707, continues to be conveyed along the first conveying platform 1. When it is conveyed to the bottom of the mold closing assembly 8, the fixed support rod 11 under the mold closing assembly 8 is raised, and the lower template 701 is raised and separated from the rotating assembly 3 of the first conveying platform 1. At this time, the clamping frame 808 of the mold closing assembly 8 moves along the first slide rail 803 and the second slide rail 804 through the telescopic rod 807 and the fixed frame 806. At this time, the telescopic rod 807 drives the clamping frame 808 to move and move the clamping frame 808 to the connecting columns 705 set on both sides of the upper template 702 above the second conveying platform 6. Then the upper template 702 is raised and connected through the positioning insertion column 706 and insertion hole 708 between the upper template 702 and the lower template 701 to complete the mold closing of the template. Then, the casting template 7, which has completed the mold closing, continues to be transported along the first conveying platform 1. When it is transported to the bottom of the casting box 9, it is lifted again and separated from the first conveying platform 1. The casting liquid at 1500-1520℃ is injected through the main casting port 703 and the auxiliary casting port 704 of the upper template 702. The initial casting temperature is 1380±10℃, and the final casting temperature is not lower than 1340℃. After the pouring is completed, the molded pouring template 7 comes into contact with the first conveying platform 1 and is then moved by the first conveying platform 1. When it moves to the very end of the first conveying platform 1, the robot arm 10 clamps the molded pouring template 7 and then moves the pouring template 7 away from the first conveying platform 1.

[0036] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A robotized complex part foundry sand mo(u)lding process equipment comprising a first conveying platform (1) and a pouring mould plate (7), characterized in that: The upper side of the first conveying platform (1) is provided with two groups of mounting fixed frames (2), and the rotating assembly (3) is mounted between the two groups of mounting fixed frames (2), and the inside of the first conveying platform (1) is provided with a first motor chamber (4), and the upper side of the rotating assembly (3) is placed with a pouring mold plate, and the side of the mounting fixed frame (2) away from the rotating assembly (3) is provided with a placing extension platform (5), and the upper side of the placing extension platform (5) is mounted with a mold closing assembly (8) through bolts, and the side of the mold closing assembly (8) away from the rotating assembly (3) is provided with a pouring box (9), and the side of the pouring box (9) away from the mold closing assembly (8) is provided with a robot hand (10), and the side of the placing extension platform (5) away from the mounting fixed frame (2) is provided with a second conveying platform (6), and the pouring mold plate (7) comprises a lower mold plate (701), an upper mold plate (702) and a sand core (707).

2. The robotic complex part foundry sand mold process apparatus of claim 1, wherein: The upper mold plate (702) comprises a main pouring port (703), a secondary pouring port (704), a connecting column (705) and a positioning plug-in column (706), and the upper side of the upper mold plate (702) is provided with the main pouring port (703), and the side of the main pouring port (703) is provided with the secondary pouring port (704), and the upper side of the upper mold plate (702) is provided with the connecting column (705), and the side of the connecting column (705) away from the secondary pouring port (704) is provided with the positioning plug-in column (706).

3. The robotic complex part foundry sand mold process apparatus of claim 1, wherein: The lower mold plate (701) comprises a sand core (707), a plug-in hole (708) and a sand discharge hole (709), and the pouring area of the lower mold plate (701) is placed with the sand core (707), and the upper side of the lower mold plate (701) is provided with the plug-in hole (708), and the side of the plug-in hole (708) is provided with the sand discharge hole (709), and the upper mold plate (702) and the lower mold plate (701) are attached through the connecting column (705) and the plug-in hole (708).

4. The robotic complex part foundry sand mold process apparatus of claim 1, wherein: The sand core (707) comprises a graphite cold iron (12), a first cast iron cold iron (13), an annular cast iron cold iron (14) and an embedded iron core (15), and the inner and outer surfaces of the sand core (707) are embedded with the graphite cold iron (12), and the graphite cold iron (12) is a semicircular graphite, and the outer surface of the sand core (707) is placed with the first cast iron cold iron (13), and the side of the first cast iron cold iron (13) is placed with the annular cast iron cold iron (14), and the inside of the sand core (707) is placed with the embedded iron core (15).

5. The robotic complex part foundry sand mold preparation process apparatus of claim 1, wherein: The three groups of supporting fixed rods (11) are placed symmetrically along the rotating assembly (3).

6. The robotic complex part foundry sand mold preparation process apparatus of claim 1, wherein: The mold closing assembly (8) comprises a mounting frame (801), a second motor chamber (802), a first sliding rail (803) and a second sliding rail (804), and second motor chambers (802) are arranged on both sides of the inner wall of the mounting frame (801) through bolts, the top end of the second motor chamber (802) is provided with the first sliding rail (803) through bolts, and the side of the first sliding rail (803) is connected with the second sliding rail (804).

7. The robotic complex part foundry sand mold preparation process apparatus of claim 6, wherein: The mold closing assembly (8) further comprises a damping frame (805), a fixed frame (806), an extension rod (807), a clamping frame (808) and a feeding door (809), and the fixed frame (806) is arranged between the two groups of damping frames (805), the extension rod (807) is connected inside the fixed frame (806), the clamping frame (808) is movably connected below the extension rod (807) through bolts, and the feeding door (809) is arranged on the side of the mounting frame (801) away from the clamping frame (808).

8. The robotic complex part foundry sand molding process apparatus of claim 1, wherein: The rotating assembly (3) comprises rotating supports (301) and rotating shafts (302), and the rotating shafts (302) are connected at the centers of the two groups of rotating supports (301), and the rotating supports (301) and the rotating shafts (302) are rotatably connected through bearings, and the core making machine (16) is arranged on the side of the second conveying platform (6) away from the first conveying platform (1).

9. A method for producing a casting sand for a complex part of a robot using the casting sand processing equipment for a complex part of a robot according to any one of claims 1 to 8, characterized in that: The production method comprises the following steps: Step one: first, the production of the sand core (707) is carried out, the mold plate of the sand making machine is opened, then the mold plate is cleaned, and the graphite cold iron (12), the first cast iron cold iron (13), the annular cast iron cold iron (14) and the built-in iron core (15) required to be connected to the sand core (707) are respectively placed at the corresponding positions of the mold plate, then the mold plate is combined, and the sand core (707) is produced, the produced sand core (707) carries the graphite cold iron (12), the first cast iron cold iron (13), the annular cast iron cold iron (14) and the built-in iron core (15), and then the sand core (707) is pretreated; Step two: then the lower mold plate (701) of the pouring mold plate (7) is conveyed along the first conveying platform (1), and the upper mold plate (702) of the pouring mold plate (7) is conveyed along the second conveying platform (6), at this time the rotating shaft (302) of the rotating assembly (3) is driven by the motor in the first motor chamber (4) in the first conveying platform (1), so that the rotating shaft (302) rotates and drives the lower mold plate (701) to move, then when the lower mold plate (701) moves in front of the mold closing assembly (8), the sand core (707) is placed in the lower mold plate (701) at this time. Step three: then put the lower mold plate (701) of the sand core (707) continue to transport along the first conveying platform (1), then when transported to the lower of the mold assembly (8), at this time the fixed support fixed rod (11) under the mold assembly (8) is lifted, and the lower mold plate (701) is lifted, and is separated from the rotating assembly (3) of the first conveying platform (1), at this time the clamping frame (808) of the mold assembly (8) moves along the first slide rail (803) and the second slide rail (804) through the telescopic rod (807) and the fixed frame (806), at this time the telescopic rod (807) drives the clamping frame (808) to move, and the clamping frame (808) is moved to the connecting column (705) arranged on both sides of the upper mold plate (702) above the second conveying platform (6), then the upper mold plate (702) is lifted, and is connected through the positioning plug-in column (706) and the plug-in hole (708) between the upper mold plate (702) and the lower mold plate (701), the mold closing is completed; Step four: then the pouring mold plate (7) which completes the mold closing continues to transport along the first conveying platform (1), and is lifted again and separated from the first conveying platform (1) when conveyed to the lower of the pouring box (9), and the pouring liquid at 1500-1520 DEG C is injected through the main pouring port (703) and the auxiliary pouring port (704) of the upper mold plate (702), wherein the pouring starting temperature is 1380±10 DEG C, and the final pouring temperature is not lower than 1340 DEG C; Step five: then after the pouring is completed, the pouring mold plate (7) which completes the mold closing contacts the first conveying platform (1), and is then driven to move by the first conveying platform (1), when moved to the last end of the first conveying platform (1), at this time the robot hand (10) clamps the pouring mold plate (7) which completes the mold closing, and drives the pouring mold plate (7) to separate from the first conveying platform (1).

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