Graphene solid lubricating bearing automatic wax injection device and method

Abstract

The application discloses a graphene solid-state lubricating bearing automatic wax injection device and method. The device comprises a man-machine interaction system, an automatic feeding and discharging system, a temperature control wax tank, a feeding and discharging sensor system, a high-pressure air jet system, a mold and a control system. The method is as follows: firstly, the temperature of the temperature control wax tank is raised to a specified temperature, the cleaned bearing is placed in the mold, and the mold is placed on the input transmission belt; when the mold reaches the wax injection position, the mechanical gripper grabs the mold and places it in the temperature control wax tank for wax injection; after the wax injection is completed, the mechanical gripper is raised, the high-pressure air jet system blows off the excess wax liquid on the mold, and the wax liquid in the bearing is rapidly cooled; then the mechanical gripper moves right, the mold is placed on the output transmission belt and output to the discharging area; finally, the mold is taken out and turned over, and the bearing is taken out after ensuring that the un-solidified wax liquid in the mold uniformly covers the surface of the bearing, and the surface wax layer is completely solidified. The application improves the wax injection efficiency and quality of the graphene solid-state lubricating bearing.

Description

Technical Field

[0001] This invention relates to the field of automated graphene solid lubrication bearing manufacturing technology, and in particular to an automatic wax injection device and method for graphene solid lubrication bearings. Background Technology

[0002] Graphene solid lubricated bearings are carbon bearings developed and evolved from metal bearings to meet the performance requirements of mechanical equipment. With graphite as the main material, they have different characteristics from metal bearings, mainly including: self-lubrication, resistance to high and low temperatures, corrosion resistance, and light weight. They can be applied to new energy battery production lines, high-temperature equipment (300-400℃) in kilns and kiln cars, military industry, steel metallurgy, boiler fans, liquid nitrogen equipment, and other high and low temperature operations.

[0003] Existing wax injection processes are unsuitable for graphene solid-state lubricated bearings. They are not only time-consuming and labor-intensive, but also inefficient, and carry the risk of uneven wax coverage, leading to poor self-lubricating performance and compromised product quality and lifespan. During the wax injection process, the uniformity and adhesion of the wax significantly impact the performance of graphene solid-state lubricated bearings. Therefore, developing an automated, efficient process that ensures uniform wax injection is urgently needed.

[0004] Invention patent CN 118080778 A discloses an automatic wax injection machine. A pressure plate is fixed to the top of the machine base, and an adjusting component is installed inside the pressure plate for conveying the mold. A display screen is fixed to the side of the machine base, and a wax cylinder is fixed to the rear end of the machine base. A plunger pump is fixed to the top of the wax cylinder, and a delivery pipeline is fixed below the front end of the plunger pump. A wax pad is slidably connected to the bottom of a high-pressure oil pump, and a clearing component is installed on the top of the wax pad for clearing blockages in the wax injection machine. The wax injection machine uses an electric telescopic plate to contact the bottom of the shaft. The shaft is driven upward by friction, and the shaft squeezes a comb upward to insert into the nozzle. The comb passes through the hinge and the inside of the pressure plate and extends into the injection nozzle. After inserting into the nozzle, it cleans the inner wall of the nozzle, preventing blockages during automatic wax injection and improving processing quality. However, this wax injection machine also has the following problems: The wax injection nozzles of this machine experience blockages or build-up due to insufficient flow. The machine only uses the upward squeezing force from the mold placement to simply clean the blocked parts of the nozzles, leading to continued build-up even after prolonged operation, making blockages unavoidable. Furthermore, the wax injection process lacks specificity, failing to inject wax into specific areas of the workpiece, resulting in poor processing quality in subsequent processes. Additionally, the machine lacks a cooling system, requiring a long waiting time for the wax to solidify, significantly increasing the waiting time required before processing and affecting efficiency. Moreover, the unsolidified wax will flow under gravity, causing uneven distribution and severely impacting product quality. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic wax injection device and method for graphene solid lubricated bearings that is highly targeted, simple in structure and operation, has high production efficiency, and has automatic fault diagnosis function.

[0006] The technical solution to achieve the purpose of this invention is: an automatic wax injection device for graphene solid lubricated bearings, including a human-machine interaction system, an automatic loading and unloading system, a temperature-controlled wax tank, a loading and unloading sensor system, a high-pressure jet system, a mold, and a control system;

[0007] The human-computer interaction system includes a display control screen and manual control buttons. The display control screen is used to display the equipment operating status, view and set parameters, adjust the wax injection temperature, adjust the wax injection time and monitor the wax tank temperature. The manual control buttons are used to start, stop and switch modes of the equipment.

[0008] The automatic loading and unloading system is used to transport the wax injection mold from the starting position to the wax injection area, and to transport the mold after wax injection to the removal position;

[0009] The temperature-controlled wax tank is located between the input and output conveyor belts of the wax injection lathe and is used to control the wax injection temperature and maintain the fluidity and adhesion of the wax.

[0010] The loading and unloading sensor system is used to detect the positioning of the mold, start the conveying system, and control the movement of the mechanical gripper.

[0011] The high-pressure jet system is located adjacent to the temperature-controlled wax tank. It is used to blow excess wax off the mold surface after wax injection and to cool the bearing inside the mold, so that the wax liquid can be initially solidified and the wax layer can be made uniform.

[0012] The mold is used to fix the graphene solid lubricated bearing for subsequent mechanical gripper operation. It can accommodate multiple bearings and the upper and lower end caps can be disassembled.

[0013] The control system is used to coordinate the synchronous operation of the temperature-controlled wax bath preheating, the automatic loading and unloading system, and the high-pressure jet system.

[0014] Furthermore, the graphene solid lubricated bearing automatic wax injection device has an externally enclosed design.

[0015] Furthermore, the automatic loading and unloading system includes an input conveyor belt, a first drive motor, an output conveyor belt, a second drive motor, a mechanical gripper, a first servo motor, a mechanical gripper lifting mechanism, a second servo motor, and a mechanical gripper gantry.

[0016] The input conveyor belt is located on the left side of the temperature-controlled wax tank, and the output conveyor belt is located on the right side of the temperature-controlled wax tank, driven by the first drive motor and the second drive motor respectively. The mechanical claw truss is set above the temperature-controlled wax tank, the input conveyor belt and the output conveyor belt by two longitudinal support columns at both ends. The mechanical claw truss is equipped with a mechanical gripper lifting mechanism, which is controlled by the first servo motor to move horizontally. The mechanical gripper lifting mechanism is equipped with mechanical grippers, which are driven by the second servo motor to move vertically to grasp the mold and move it into the temperature-controlled wax tank for wax injection.

[0017] The automatic loading and unloading system can automatically adjust to adapt to workpieces of different sizes and shapes.

[0018] Furthermore, the mechanical gripper is made of mold steel and has the characteristics of being resistant to high and low temperatures and corrosion, so as to meet the requirement of gripping the mold and sinking it into the wax tank within a set time to control the wax injection.

[0019] Furthermore, the temperature-controlled wax bath includes a wax bath base, a temperature sensor, and a heater;

[0020] The temperature sensor is located around the base of the temperature-controlled wax bath and is used to monitor the temperature of the wax bath in real time.

[0021] The heater is located below the wax tank base and is used to maintain the temperature of the wax tank within a preset temperature range.

[0022] Furthermore, the loading and unloading sensor system includes a start-point switch sensor, an end-point switch sensor, and a position sensor;

[0023] The starting point switch sensor is used to detect whether the mold is placed at the starting position on the input conveyor belt;

[0024] The endpoint switch sensor is used to detect whether the mold has reached the take-out position of the output conveyor belt after wax injection is completed;

[0025] The position sensor is used to detect the positioning of the mold at the wax injection position in order to control the precise movement of the mechanical gripper.

[0026] Furthermore, the high-pressure jet system includes a base, a high-pressure jet device, and a guide rod cylinder;

[0027] The base is arranged adjacent to the temperature-controlled wax tank. A guide rod cylinder is installed on the base to provide high-pressure gas to the high-pressure jet device. A high-pressure jet device is installed at the upper end of the guide rod cylinder for preliminary cooling of the wax liquid.

[0028] Furthermore, the pressure and time of the high-pressure jet device in the high-pressure jet system can be adjusted to ensure a uniform wax layer.

[0029] Furthermore, the mold is fixed by an electric screwdriver, and the mold is equipped with rubber pads and seals to ensure that wax is injected only into the rolling elements and cage inside the graphene solid lubricated bearing during the wax injection process.

[0030] An automated wax injection method for producing graphene solid lubricated bearings, the method being based on the aforementioned automated wax injection device for graphene solid lubricated bearings, the wax injection method comprising the following steps:

[0031] Step 1: Start the automatic wax injection device for graphene solid lubricated bearings and raise the temperature of the temperature-controlled wax tank to the specified temperature.

[0032] Step 2: Place the cleaned bearing into the mold, fix the mold with an electric screwdriver, and place it on the input conveyor belt;

[0033] Step 3: After the start-up switch sensor at the end of the input conveyor belt detects that the mold has reached the wax injection position, the mechanical gripper picks up the mold and puts it into the temperature-controlled wax tank for wax injection.

[0034] Step 4: After wax injection is completed, the mechanical grippers rise, and the high-pressure jet device extends forward to blow away the excess wax on the mold and cool the wax inside the bearing, so that the wax layer solidifies evenly in the cage and rolling elements inside the bearing.

[0035] Step 5: The mechanical gripper moves to the right along the mechanical gripper gantry and places the wax-filled mold onto the output conveyor belt, which then outputs the mold to the unloading area.

[0036] Step 6: Remove the mold and flip it over to ensure that the unsolidified wax inside the mold evenly covers the surface of the bearing. Repeat this process several times, then open the mold, remove the bearing, and cool it to below 25°C to completely solidify the surface wax layer.

[0037] Compared with the prior art, the present invention has the following significant advantages: (1) The equipment of the present invention includes a temperature-controlled wax pool, a conveying system, a mechanical gripper and multiple sensor modules. Through the coordinated work of these components, the equipment can automatically complete the wax injection process of the bearing, realize fully automated operation, improve production efficiency and reduce labor costs; (2) Through automated control and precise mechanical operation, the bearing can be waxed efficiently, effectively ensuring the uniformity of the wax layer and significantly improving the quality and performance of graphene solid lubricated bearings; (3) It is highly targeted, simple in structure and operation, has automatic fault troubleshooting function, and has good stability and repeatability, with broad application prospects and significant economic benefits. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the structure of an automatic wax injection device for graphene solid lubricated bearings according to the present invention.

[0039] Figure 2This is a top view of the automatic wax injection device for graphene solid lubricated bearings in this invention.

[0040] Figure 3 This is a front view of the automatic wax injection device for graphene solid lubricated bearings in this invention.

[0041] Figure 4 This is a schematic diagram of the mold structure in this invention.

[0042] Figure 5 This is a schematic flowchart of an automatic wax injection method for graphene solid lubricated bearings according to the present invention. Detailed Implementation

[0043] The present invention will be further described below with reference to specific embodiments. However, those skilled in the art should understand that the detailed description given here with reference to the accompanying drawings is for better explanation. The structure of the present invention necessarily exceeds the limited embodiments described herein. Some equivalent alternatives or common means will not be described in detail here, but still fall within the protection scope of this application.

[0044] In the description of this invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0045] like Figure 1 , Figure 2 , Figure 3 As shown, the present invention provides an automatic wax injection device for graphene solid lubricated bearings, comprising a human-machine interaction system, an automatic loading and unloading system, a temperature-controlled wax tank, a loading and unloading sensor system, a high-pressure jet system, a mold 9, and a control system 61;

[0046] The human-computer interaction system includes a display control screen 11 and manual control buttons 12. The display control screen 11 is used to display the equipment operating status, view and set parameters, adjust the wax injection temperature, adjust the wax injection time and monitor the wax tank temperature. The manual control buttons 12 are used to start, stop and switch modes of the equipment.

[0047] The automatic loading and unloading system is used to transport the wax injection mold 9 from the starting position to the wax injection area, and to transport the wax-injected mold 9 to the removal position;

[0048] The temperature-controlled wax tank 4 is located between the input conveyor belt 21 and the output conveyor belt 22 on the wax injection lathe, and is used to control the temperature of wax injection and maintain the fluidity and adhesion of the wax.

[0049] The loading and unloading sensor system is used to detect the positioning of the mold 9, start the conveying system, and control the movement of the mechanical gripper 31.

[0050] The high-pressure jet system is located at the front end of the temperature-controlled wax tank 4. It is used to blow excess wax away from the surface of the mold 9 after wax injection, and at the same time to quickly cool down the bearing inside the mold 9, so that the wax liquid can be initially solidified and ensure that the wax layer is uniform.

[0051] The mold 9 is used to fix the graphene solid lubricated bearing, which facilitates the operation of the mechanical gripper. It can accommodate multiple bearings and the upper and lower end covers are detachable.

[0052] The control system 61 is used to coordinate the synchronous operation of the temperature-controlled wax tank 4 preheating, the automatic loading and unloading system, and the high-pressure jet system.

[0053] As a specific example, the automatic wax injection device adopts an enclosed design to ensure operational safety and process stability.

[0054] As a specific example, the automatic loading and unloading system includes an input conveyor belt 21, a first drive motor 211, an output conveyor belt 22, a second drive motor 221, a mechanical gripper 31, a first servo motor 331, a mechanical gripper lifting mechanism 32, a second servo motor 321, and a mechanical gripper gantry 33.

[0055] The input conveyor belt 21 is located on the left side of the temperature-controlled wax tank 4, and the output conveyor belt 22 is located on the right side of the temperature-controlled wax tank 4, driven by the first drive motor 211 and the second drive motor 221 respectively. The mechanical claw truss 33 is set above the temperature-controlled wax tank 4, the input conveyor belt 21 and the output conveyor belt 22 by two longitudinal pillars at both ends. The mechanical claw truss 33 is equipped with a mechanical gripper lifting mechanism 32, which is controlled by the first servo motor 331 to move horizontally. The mechanical gripper lifting mechanism 32 is equipped with a mechanical gripper 31, which is driven by the second servo motor 321 to move up and down to grab the mold 9 and move it into the temperature-controlled wax tank 4 for wax injection.

[0056] The automatic loading and unloading system can be automatically adjusted to adapt to workpieces of different sizes and shapes.

[0057] As a specific example, the mechanical gripper 31 has the characteristics of being resistant to high and low temperatures and corrosion, so as to hold the mold 9 for a long time within a set time period and sink it into the wax tank 4 to control the wax injection.

[0058] As a specific example, the temperature-controlled wax bath 4 includes a wax bath base 41, a temperature sensor 42, and a heater;

[0059] The temperature sensor 42 is located around the wax tank base 41 of the temperature-controlled wax tank 4 and is used to monitor the temperature of the wax tank in real time.

[0060] The heater is located below the wax tank base 41 and is used to maintain the temperature of the wax tank 4 within a preset temperature range to ensure the stability of the wax injection process.

[0061] As a specific example, the loading / unloading sensor system includes a start-point switch sensor, an end-point switch sensor, and a position sensor;

[0062] The starting point switch sensor is used to detect whether the mold 9 is placed at the starting position on the input conveyor belt 21;

[0063] The endpoint switch sensor is used to detect whether the mold 9 has reached the take-out position of the output conveyor belt 22 after the wax injection is completed;

[0064] The position sensor is used to detect the positioning of the mold 9 at the wax injection position in order to control the precise movement of the mechanical gripper 31.

[0065] As a specific example, the high-pressure jet system includes a base 51, a high-pressure jet device 52, and a guide rod cylinder 53;

[0066] The base 51 is arranged adjacent to the temperature-controlled wax tank 4. A guide rod cylinder 53 is provided on the base 51 to provide high-pressure gas to the high-pressure jet device 52. The high-pressure jet device 52 is provided at the upper end of the guide rod cylinder 53 for preliminary cooling of the wax liquid.

[0067] As a specific example, the pressure and time of the high-pressure jet device 52 in the high-pressure jet system are adjustable to ensure a uniform wax layer.

[0068] As a specific example, such as Figure 4 As shown, the mold 9 adopts a structure that can firmly fix the graphene solid lubricated bearing and facilitate the operation of the mechanical gripper 31. It can accommodate multiple graphene solid lubricated bearings. The upper and lower end caps are detachable and fixed by an electric screwdriver. The mold 9 is equipped with rubber pads and seals to ensure that the mold 9 only injects wax into the rolling elements and cage inside the graphene solid lubricated bearing during the wax injection process.

[0069] like Figure 5 As shown, an automated wax injection method for producing graphene solid lubricated bearings includes the following steps:

[0070] Step 1: Start the automatic wax injection device for graphene solid lubricated bearings and raise the temperature of the temperature-controlled wax tank 4 to the specified temperature.

[0071] Step 2: Place the cleaned bearing into mold 9, and fix mold 9 with an electric screwdriver, then place it on the input conveyor belt 21;

[0072] Step 3: After the start-up switch sensor at the end of the input conveyor belt 21 detects that the mold 9 has reached the wax injection position, the mechanical gripper 31 grabs the mold 9 and puts it into the temperature-controlled wax tank 4 for wax injection.

[0073] Step 4: After wax injection is completed, the mechanical gripper 31 rises, and the high-pressure jet device 52 extends forward to blow away the excess wax on the mold 9 and cools the wax in the bearing so that the wax layer solidifies evenly in the cage and rolling elements inside the bearing.

[0074] Step 5: The mechanical gripper 31 moves to the right along the mechanical gripper truss 33 and places the wax-filled mold 9 on the output conveyor belt 22. The output conveyor belt 22 outputs the mold 9 to the unloading area.

[0075] Step 6: Remove mold 9 and flip it over to ensure that the unsolidified wax inside mold 9 evenly covers the bearing surface. Repeat this process several times, then open mold 9, remove the bearing, and cool it to below 25°C to completely solidify the surface wax layer.

[0076] In all the examples shown and discussed here, any specific values ​​should be interpreted as merely exemplary, not as limitations.

[0077] The purpose of this invention is to overcome the shortcomings of wax injection equipment and processes in the production of graphene solid-lubricated ball bearings, improve the efficiency, safety, and accuracy of wax injection for graphene solid-lubricated bearings, and further enhance the self-lubrication and service life of graphene solid-lubricated bearings. This invention combines automated control technology to improve the wax injection efficiency and product performance quality of high-speed steel bearings, reduce labor costs, reduce error rates, and increase work efficiency, thereby improving the overall efficiency, safety, and accuracy of wax injection in the production of high-speed steel bearings.

[0078] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic wax injection device for graphene solid lubricated bearings, characterized in that, It includes a human-machine interaction system, an automatic loading and unloading system, a temperature-controlled wax tank, a loading and unloading sensor system, a high-pressure jet system, a mold (9), and a control system (61). The human-computer interaction system includes a display control screen (11) and a manual control button (12). The display control screen (11) is used to display the operating status of the equipment, view and set parameters, adjust the wax injection temperature, adjust the wax injection time and monitor the wax tank temperature. The manual control button (12) is used to start, stop and switch modes of the equipment. The automatic loading and unloading system is used to transfer the wax injection mold (9) from the starting position to the wax injection area, and to transfer the wax-injected mold (9) to the removal position; The temperature-controlled wax tank (4) is located between the input conveyor belt (21) and the output conveyor belt (22) on the wax injection lathe. It is used to control the temperature of wax injection and maintain the fluidity and adhesion of the wax. The loading and unloading sensor system is used to detect the positioning of the mold (9), start the conveying system, and control the movement of the mechanical gripper (31); The high-pressure jet system is set adjacent to the temperature-controlled wax tank (4) and is used to blow excess wax away from the surface of the mold (9) after wax injection, while cooling the bearing inside the mold (9) to allow the wax liquid to solidify initially and ensure that the wax layer is uniform. The mold (9) is used to fix the graphene solid lubricated bearing for subsequent mechanical gripper operation. It can accommodate multiple bearings and the upper and lower end caps can be disassembled. The control system (61) is used to coordinate the preheating of the temperature-controlled wax tank (4), the operation of the automatic loading and unloading system and the synchronous operation of the high-pressure jet system; The automatic loading and unloading system includes an input conveyor belt (21), a first drive motor (211), an output conveyor belt (22), a second drive motor (221), a mechanical gripper (31), a first servo motor (331), a mechanical gripper lifting mechanism (32), a second servo motor (321), and a mechanical gripper gantry (33). The input conveyor belt (21) is located on the left side of the temperature-controlled wax tank (4), and the output conveyor belt (22) is located on the right side of the temperature-controlled wax tank (4), driven by the first drive motor (211) and the second drive motor (221) respectively; the mechanical claw truss (33) is set above the temperature-controlled wax tank (4), the input conveyor belt (21) and the output conveyor belt (22) by two longitudinal pillars at both ends; the mechanical claw truss (33) is provided with a mechanical gripper lifting mechanism (32), which is controlled by the first servo motor (331) to move horizontally; the mechanical gripper lifting mechanism (32) is provided with a mechanical gripper (31), which is driven by the second servo motor (321) to move up and down to grab the mold (9) and move it into the temperature-controlled wax tank (4) for wax injection; The automatic loading and unloading system can automatically adjust to adapt to workpieces of different sizes and shapes; The mold (9) is fixed by an electric screwdriver. The mold (9) is equipped with rubber pads and seals to ensure that the mold (9) only injects wax into the internal rolling elements and cage of the graphene solid lubricated bearing during the wax injection process.

2. The automatic wax injection device for graphene solid lubricated bearings according to claim 1, characterized in that, The automatic wax injection device has an enclosed external design.

3. The automatic wax injection device for graphene solid lubricated bearings according to claim 1, characterized in that, The mechanical gripper (31) is made of mold steel and has the characteristics of high and low temperature resistance and corrosion resistance, which can grasp the mold (9) and sink it into the wax tank (4) within a set time to control the wax injection.

4. The automatic wax injection device for graphene solid lubricated bearings according to claim 1, characterized in that, The temperature-controlled wax bath (4) includes a wax bath base (41), a temperature sensor (42), and a heater; The temperature sensor (42) is located around the wax tank base (41) of the temperature-controlled wax tank (4) and is used to monitor the temperature of the wax tank in real time. The heater is located below the wax tank base (41) and is used to maintain the temperature of the wax tank (4) within a preset temperature range.

5. The automatic wax injection device for graphene solid lubricated bearings according to claim 1, characterized in that, The loading and unloading sensor system includes a start-point switch sensor, an end-point switch sensor, and a position sensor. The starting point switch sensor is used to detect whether the mold (9) is placed at the starting position on the input conveyor belt (21); The endpoint switch sensor is used to detect whether the mold (9) after wax injection has reached the removal position of the output conveyor belt (22); The position sensor is used to detect the positioning of the mold (9) at the wax injection position in order to control the precise movement of the mechanical gripper (31).

6. The automatic wax injection device for graphene solid lubricated bearings according to claim 1, characterized in that, The high-pressure jet system includes a base (51), a high-pressure jet device (52), and a guide rod cylinder (53). The base (51) is arranged adjacent to the temperature-controlled wax tank (4). A guide rod cylinder (53) is provided on the base (51) to provide high-pressure gas to the high-pressure jet device (52). A high-pressure jet device (52) is provided at the upper end of the guide rod cylinder (53) to preliminarily cool the wax liquid.

7. The automatic wax injection device for graphene solid lubricated bearings according to claim 6, characterized in that, The pressure and time of the high-pressure jet device (52) in the high-pressure jet system can be adjusted to ensure that the wax layer is uniform.

8. An automatic wax injection method for producing graphene solid lubricated bearings, characterized in that, This method is based on the automatic wax injection device for graphene solid lubricated bearings according to any one of claims 1 to 7, and the wax injection method includes the following steps: Step 1: Start the automatic wax injection device for graphene solid lubricated bearings and raise the temperature of the temperature-controlled wax tank (4) to the specified temperature; Step 2: Place the cleaned bearing into the mold (9), and fix the mold (9) with an electric screwdriver and place it on the input conveyor belt (21); Step 3: After the start-up switch sensor at the end of the input conveyor belt (21) detects that the mold (9) has reached the wax injection position, the mechanical gripper (31) grabs the mold (9) and puts it into the temperature-controlled wax tank (4) for wax injection. Step 4: After waxing is completed, the mechanical gripper (31) rises, the high-pressure jet device (52) extends forward to blow away the excess wax on the mold (9), and cools down the wax in the bearing so that the wax layer is evenly solidified in the cage and rolling elements inside the bearing. Step 5: The mechanical gripper (31) moves to the right along the mechanical gripper gantry (33) and places the wax-filled mold (9) on the output conveyor belt (22). The output conveyor belt (22) outputs the mold (9) to the unloading area. Step 6: Take out the mold (9) and turn it over to ensure that the unsolidified wax inside the mold (9) evenly covers the bearing surface. After several times, open the mold (9) and take out the bearing to cool it to below 25°C to completely solidify the surface wax layer.

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