Linear motor stator vacuum constant temperature epoxy pouring device and pouring process

Abstract

The present application relates to motor stator potting technical field, specifically said is a kind of linear motor stator vacuum constant temperature epoxy potting device and filling process, including potting shell and the sealing base for bottom sealing used to be set in the bottom of potting shell, sealing groove is opened in sealing base, potting shell bottom is clamped in sealing groove, potting groove is opened in the inside of potting shell bottom, control cavity is opened in the inside of the inner wall top of potting groove, volume control component is arranged in potting shell, volume control component includes driving element and mounting plate, driving element is fixedly installed on the inner wall of potting shell, mounting plate is arranged in control cavity, the internal structure of potting shell and sealing base can complete potting operation, and through the filling process of the present application, each part of motor stator can be potting, especially motor stator initial placement site can also complete potting, so as to ensure that potting is comprehensive, reduce operation process.

Description

Technical Field

[0001] This invention relates to a filling process, specifically a vacuum constant temperature epoxy filling device and filling process for a linear motor stator, belonging to the field of motor stator filling technology. Background Technology

[0002] The stator is an important component of a linear motor. It consists of three parts: the stator core, the stator windings, and the frame. The main function of the stator is to generate a rotating magnetic field, while the main function of the rotor is to be cut by magnetic lines of force within this rotating magnetic field, thereby generating (output) current. After production, the motor stator needs to be potted. CN201920259016.2 discloses an epoxy potting fixture for a motor stator, including an inner core fixture and a stop fixture. One end of the inner core fixture is provided with an inner core step, which extends into the front end cover of the motor. The other end of the inner core fixture extends out of the motor housing, and the outer wall of the inner core fixture abuts against the motor stator. One end of the stop fixture is provided with a stop step, which extends into the motor housing. The other end of the stop fixture is located outside the housing. This allows the motor stator to be potted using epoxy potting technology, avoiding contamination and reducing epoxy waste. The motor stator potting structure provided by this technical solution can complete the motor stator potting. However, the motor stator end needs to contact the inner wall of the fixture throughout the process. Therefore, the motor stator end cannot be directly potted. After processing, the motor stator end has no adhesive layer or needs to be sealed separately at the end later, which is inconvenient.

[0003] In view of this, the present invention is proposed to help solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a vacuum constant temperature epoxy potting device and potting process for a linear motor stator in order to solve the above-mentioned problems. The potting operation can be completed through the internal structure of the potting shell and the sealing base. Furthermore, the potting process of this invention can pot all parts of the motor stator, especially the initial placement part of the motor stator, thereby ensuring comprehensive potting and reducing the operation process.

[0005] This invention achieves the above-mentioned objective through the following technical solution: a vacuum constant-temperature epoxy potting device for a linear motor stator, comprising a potting shell and a sealing base disposed at the bottom of the potting shell for bottom sealing. The sealing base has a sealing groove for sealing connection with the bottom of the potting shell. The bottom of the potting shell is engaged within the sealing groove. A potting groove is formed inside the bottom of the potting shell. A control cavity is formed inside the top of the inner wall of the potting groove. A volume control assembly is disposed within the potting shell. The volume control assembly includes a drive component and a mounting plate. The drive component is fixedly mounted on the inner wall of the potting shell. The mounting plate is disposed within the control cavity and mounted on the output shaft of the drive component. Four evenly spaced features on the bottom of the mounting plate are used to limit the position of the motor stator. The filling tank is equipped with a volume-limiting sealing block that controls the volume of the filling tank. Four slots are provided between the filling tank and the control cavity. The volume-limiting sealing block is locked in the slots and its bottom is located in the filling tank. A multi-stage drive device for controlling the movement of the filling shell is fixedly installed on the sealing base. The drive component is fixedly installed at one end of the multi-stage drive device. A glue injection tube is installed on one side of the top of the filling shell. A control valve is installed on the glue injection tube. A receiving ring groove for placing the motor stator is provided on the inner wall of the sealing tank. An installation groove is provided between the receiving ring groove and the four outer walls of the sealing base. A glue filling tube is installed in the installation groove. A solenoid valve is installed on the glue filling tube. An upper heating component and a lower heating component are provided inside the filling shell.

[0006] Furthermore, the upper heating assembly includes an upper inner ring shell, an upper inner heating ring plate, an upper outer ring shell, and an upper outer heating ring plate. The lower heating assembly includes a lower inner ring shell, a lower inner heating ring plate, a lower outer ring shell, and a lower outer heating ring plate. The upper inner ring shell and the lower inner ring shell are both installed on the inner wall of the potting shell. The upper inner ring shell is located at the top of the lower inner ring shell. The upper inner heating ring plate is installed inside the upper inner ring shell, and the lower inner heating ring plate is installed inside the lower inner ring shell. The upper outer ring shell and the lower outer ring shell are both installed on the outer wall of the potting shell. The upper outer ring shell is located at the top of the lower outer ring shell, and the upper outer heating ring plate is installed inside the upper outer ring shell, and the lower outer heating ring plate is installed inside the lower outer ring shell.

[0007] Furthermore, the volume of the accommodating annular groove is the same as the volume of the portion of the limiting sealing block disposed within the potting groove.

[0008] A filling process for vacuum constant temperature epoxy potting of a linear motor stator, the filling process comprising the following steps:

[0009] S1. Placement of the motor stator: The potting shell is pushed upward by the multi-stage drive device. After the potting shell separates from the sealing base, the bottom of the motor stator is placed into the receiving ring groove on the sealing base. After stable placement, the multi-stage drive device is controlled to pull the potting shell downward. After the bottom of the potting shell is inserted into the sealing groove, the multi-stage drive device is turned off. At this time, it can be ensured that the motor stator is sealed inside the potting shell.

[0010] S2. Glue injection: Open the control valve, and then use a vacuum machine to draw the potting tank inside the potting shell to a vacuum state through the glue injection tube. Then inject the epoxy resin into the potting tank through the glue injection tube. After the potting tank is filled with epoxy resin, the glue injection is completed and the control valve is closed.

[0011] S3. Preliminary heating: First, use the lower heating component to preliminarily heat the epoxy resin liquid at the bottom of the potting tank for a short time. Turn on the lower inner heating ring plate and the lower outer heating ring plate and adjust the heating temperature to 75-85℃. Continue heating for 10 minutes to complete the preliminary heating. The epoxy resin liquid on the outer side of the bottom of the motor stator in the potting tank will slightly solidify, while the epoxy resin liquid on the outer side of the top of the motor stator will still be in a fluid state.

[0012] S4. Applying epoxy resin to the bottom of the motor stator: Connect the epoxy resin application tubes on all four sides of the sealing base to the external oil pump. Use the epoxy resin pump to draw epoxy resin into the inner ring groove of the potting tank. At the same time, start the drive unit. The drive unit can push the mounting plate upward. At the same time, the limiting seal block can move from the potting tank to the control cavity and the slot. The epoxy resin drawn in by the bottom epoxy resin pump can quickly fill the space left in the potting tank after the limiting seal block is moved out. When the epoxy resin pump draws the epoxy resin into the potting tank, it can push the motor stator upward under hydraulic action. The slightly solidified epoxy resin at the bottom can limit the movement range of the motor stator. After the space in the potting tank is filled again, the epoxy resin application is completed.

[0013] S5. Heating and curing of epoxy resin: Use the upper heating component and the lower heating component to heat the inside of the potting shell. Power on the upper inner heating ring plate, the upper outer heating ring plate, the lower inner heating ring plate and the lower outer heating ring plate and adjust the heating temperature to 90℃. Continue heating for 40 minutes to complete the curing.

[0014] S6. End Repair: After the cured motor stator cools down, start the multi-stage hydraulic equipment. The multi-stage equipment will push the potting shell upwards, and the motor stator can be separated from the potting shell. After removing the motor stator, use cutting equipment to cut the epoxy resin at the top and bottom ends of the motor stator, and control the end glue thickness to be 3-5cm.

[0015] The technical effects and advantages of this invention are as follows:

[0016] The potting operation can be completed through the internal structure of the potting shell and sealing base. Furthermore, the potting process of this invention can pot all parts of the motor stator, especially the initial placement part of the motor stator, thereby ensuring comprehensive potting and reducing the number of operation steps. Attached Figure Description

[0017] Figure 1 is a perspective view of the present invention;

[0018] Figure 2 is a schematic cross-sectional view of the present invention;

[0019] Figure 3 is a perspective view of the sealing base of the present invention;

[0020] Figure 4 is a perspective view of the potting shell of the present invention;

[0021] Figure 5 is a perspective view of the volume control component of the present invention;

[0022] In the diagram: 1. Potting shell; 2. Sealing base; 3. Sealing groove; 4. Potting groove; 5. Control chamber; 6. Volume control assembly; 601. Drive component; 602. Mounting plate; 7. Capacity limiting sealing block; 8. Clip slot; 9. Multi-stage drive device; 10. Injection hose; 11. Control valve; 12. Receiving ring groove; 13. Mounting groove; 14. Refill hose; 15. Solenoid valve; 16. Upper heating assembly; 1601. Upper inner ring shell; 1602. Upper inner heating ring plate; 1603. Upper outer ring shell; 1604. Upper outer heating ring plate; 17. Lower heating assembly; 1701. Lower inner ring shell; 1702. Lower inner heating ring plate; 1703. Lower outer ring shell; 1704. Lower outer heating ring plate. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Example 1:

[0025] As shown in Figure 1 and Figure 5 As shown, a vacuum constant temperature epoxy potting device for a linear motor stator includes a potting shell 1 and a sealing base 2 disposed at the bottom of the potting shell 1 for bottom sealing. The sealing base 2 has a sealing groove 3 for sealing connection with the bottom of the potting shell 1. The bottom of the potting shell 1 is locked in the sealing groove 3. A potting groove 4 is formed inside the bottom of the potting shell 1. A control cavity 5 is formed inside the top of the inner wall of the potting groove 4.

[0026] In specific implementations, such as Figure 2 and Figure 5 As shown, a volume control assembly 6 is provided inside the potting shell 1. The volume control assembly 6 includes a drive component 601 and a mounting plate 602. The drive component 601 is fixedly installed on the inner wall of the potting shell 1. The mounting plate 602 is located inside the control cavity 5 and is mounted on the output shaft of the drive component 601. The drive component 601 is one of a hydraulic cylinder, a pneumatic cylinder, and an electric telescopic rod. Four volume-limiting sealing blocks 7 are evenly installed on the bottom of the mounting plate 602 to limit the position of the motor stator and control the volume of the potting groove 4. Four locking slots 8 are provided between the potting groove 4 and the control cavity 5. The volume-limiting sealing blocks 7 are locked in the locking slots 8 and their bottoms are located inside the potting groove 4. A multi-stage drive device 9 for controlling the movement of the potting shell 1 is fixedly installed on the sealing base 2. The drive component 601 is fixedly installed on one end of the multi-stage drive device 9. It is one of a multi-stage hydraulic cylinder, a multi-stage pneumatic cylinder, and a multi-stage electric telescopic rod. A glue injection pipe 10 is installed on one side of the top of the potting shell 1. A control valve 11 is installed on the glue injection pipe 10. A receiving ring groove 12 for placing the motor stator is opened on the inner wall of the sealing groove 3. An installation groove 13 is opened between the receiving ring groove 12 and the four outer walls of the sealing base 2. A glue filling pipe 14 is installed in the installation groove 13. The volume of the receiving ring groove 12 is the same as the volume of the portion of the limiting sealing block 7 set in the potting groove 4. A solenoid valve 15 is installed on the glue filling pipe 14. An upper heating assembly 16 and a lower heating assembly 17 are provided inside the potting shell 1.

[0027] In specific implementations, such as Figure 2 As shown, the upper heating assembly 16 includes an upper inner ring shell 1601, an upper inner heating ring plate 1602, an upper outer ring shell 1603, and an upper outer heating ring plate 1604. The lower heating assembly 17 includes a lower inner ring shell 1701, a lower inner heating ring plate 1702, a lower outer ring shell 1703, and a lower outer heating ring plate 1704. The upper inner ring shell 1601 and the lower inner ring shell 1701 are both installed on the inner wall of the potting shell 1. The upper inner ring shell 1601 is located on top of the lower inner ring shell 1701. The upper inner heating ring plate 1602 is installed inside the upper inner ring shell 1601, and the lower inner heating ring plate 1702 is installed inside the lower inner ring shell 1701. The upper outer ring shell 1603 and the lower outer ring shell 1704 are also included. All are installed on the outer side wall of the potting shell 1. The upper outer ring shell 1603 is set on top of the lower outer ring shell 1603. The upper outer heating ring plate 1604 is installed inside the upper outer ring shell 1603, and the lower outer heating ring plate 1704 is installed inside the lower outer ring shell 1703.

[0028] A filling process for vacuum constant temperature epoxy potting of linear motor stator, the filling process includes the following steps:

[0029] S1. Placement of the motor stator: The multi-stage drive device 9 pushes the potting shell 1 upwards, separating it from the sealing base 2. The bottom of the motor stator is then placed into the receiving annular groove 12 on the sealing base 2. After stable placement, the multi-stage drive device 9 is controlled to pull the potting shell 1 downwards. The bottom of the potting shell 1 is then engaged in the sealing groove 3. The multi-stage drive device 9 is then turned off. This ensures that the motor stator is sealed within the potting shell 1.

[0030] S2. Glue injection: Open the control valve 11, and then use a vacuum machine to draw the potting tank 4 inside the potting shell 1 into a vacuum state through the glue injection tube 10. Then inject the epoxy resin into the potting tank 4 through the glue injection tube 10. After the potting tank 4 is filled with epoxy resin, the glue injection is completed and the control valve 11 is closed.

[0031] S3. Preliminary heating: First, use the lower heating component 17 to preliminarily heat the epoxy resin liquid at the bottom of the potting tank 4 for a short time. Power on the lower inner heating ring plate 1702 and the lower outer heating ring plate 1704 and adjust the heating temperature to 75℃. After heating for 10 minutes, the preliminary heating is completed. The epoxy resin liquid on the outer side of the bottom of the motor stator in the potting tank 4 is slightly solidified, while the epoxy resin liquid on the outer side of the top of the motor stator is still in a fluid state.

[0032] S4. Applying adhesive to the bottom of the motor stator: Connect the adhesive application tubes 14 on all four sides of the sealing base 2 to an external oil pump. Use the adhesive pump to draw epoxy resin into the ring groove 12 inside the potting tank 4. At the same time, start the drive unit 601. The drive unit 601 can push the mounting plate 602 upward. At the same time, the limiting seal block 7 can move from the potting tank 4 into the control cavity 5 and the slot 8. The epoxy resin drawn in by the bottom adhesive pump can quickly fill the space left in the potting tank 4 after the limiting seal block 7 is moved out. When the adhesive pump draws the epoxy resin into the potting tank 4, it can push the motor stator upward under hydraulic action. The slightly solidified epoxy resin at the bottom can limit the movement range of the motor stator. After the space inside the potting tank 4 is filled again, the adhesive application is completed.

[0033] S5. Heating and curing of epoxy resin: The upper heating component and the lower heating component are used to heat the inside of the potting shell 1. The upper inner heating ring plate 1602, the upper outer heating ring plate 1604, the lower inner heating ring plate 1702 and the lower outer heating ring plate 1704 are all powered on and the heating temperature is adjusted to 90℃. The curing is completed by heating for 40 minutes.

[0034] S6. End Repair: After the cured motor stator cools down, start the multi-stage hydraulic equipment. The multi-stage equipment will push the potting shell 1 upwards, and the motor stator can be separated from the potting shell 1. After removing the motor stator, use the cutting equipment to cut the epoxy resin at the top and bottom ends of the motor stator, and control the end glue thickness to be 3-5cm.

[0035] Example 2:

[0036] As shown in Figure 1 and Figure 5 As shown, a vacuum constant temperature epoxy potting device for a linear motor stator includes a potting shell 1 and a sealing base 2 disposed at the bottom of the potting shell 1 for bottom sealing. The sealing base 2 has a sealing groove 3 for sealing connection with the bottom of the potting shell 1. The bottom of the potting shell 1 is locked in the sealing groove 3. A potting groove 4 is formed inside the bottom of the potting shell 1. A control cavity 5 is formed inside the top of the inner wall of the potting groove 4.

[0037] In specific implementations, such as Figure 2 and Figure 5 As shown, a volume control assembly 6 is provided inside the potting shell 1. The volume control assembly 6 includes a drive component 601 and a mounting plate 602. The drive component 601 is fixedly installed on the inner wall of the potting shell 1. The mounting plate 602 is located inside the control cavity 5 and is mounted on the output shaft of the drive component 601. The drive component 601 is one of a hydraulic cylinder, a pneumatic cylinder, and an electric telescopic rod. Four volume-limiting sealing blocks 7 are evenly installed on the bottom of the mounting plate 602 to limit the position of the motor stator and control the volume of the potting groove 4. Four locking slots 8 are provided between the potting groove 4 and the control cavity. The volume-limiting sealing blocks 7 are locked in the locking slots 8 and their bottoms are located inside the potting groove 4. A multi-stage drive device 9 for controlling the movement of the potting shell 1 is fixedly installed on the sealing base 2. The drive component 601 is fixedly installed on one end of the multi-stage drive device 9. It is one of a multi-stage hydraulic cylinder, a multi-stage pneumatic cylinder, and a multi-stage electric telescopic rod. A glue injection pipe 10 is installed on one side of the top of the potting shell 1. A control valve 11 is installed on the glue injection pipe 10. A receiving ring groove 12 for placing the motor stator is opened on the inner wall of the sealing groove 3. An installation groove 13 is opened between the receiving ring groove 12 and the four outer walls of the sealing base 2. A glue filling pipe 14 is installed in the installation groove 13. The volume of the receiving ring groove 12 is the same as the volume of the portion of the limiting sealing block 7 set in the potting groove 4. A solenoid valve 15 is installed on the glue filling pipe 14. An upper heating assembly 16 and a lower heating assembly 17 are provided inside the potting shell 1.

[0038] In specific implementations, such as Figure 2As shown, the upper heating assembly 16 includes an upper inner ring shell 1601, an upper inner heating ring plate 1602, an upper outer ring shell 1603, and an upper outer heating ring plate 1604. The lower heating assembly 17 includes a lower inner ring shell 1701, a lower inner heating ring plate 1702, a lower outer ring shell 1703, and a lower outer heating ring plate 1704. The upper inner ring shell 1601 and the lower inner ring shell 1701 are both installed on the inner wall of the potting shell 1. The upper inner ring shell 1601 is located on top of the lower inner ring shell 1701. The upper inner heating ring plate 1602 is installed inside the upper inner ring shell 1601, and the lower inner heating ring plate 1702 is installed inside the lower inner ring shell 1701. The upper outer ring shell 1603 and the lower outer ring shell 1704 are also included. All are installed on the outer side wall of the potting shell 1. The upper outer ring shell 1603 is set on top of the lower outer ring shell 1603. The upper outer heating ring plate 1604 is installed inside the upper outer ring shell 1603, and the lower outer heating ring plate 1704 is installed inside the lower outer ring shell 1703.

[0039] A filling process for vacuum constant temperature epoxy potting of linear motor stator, the filling process includes the following steps:

[0040] S1. Placement of the motor stator: The multi-stage drive device 9 pushes the potting shell 1 upwards, separating it from the sealing base 2. The bottom of the motor stator is then placed into the receiving annular groove 12 on the sealing base 2. After stable placement, the multi-stage drive device 9 is controlled to pull the potting shell 1 downwards. The bottom of the potting shell 1 is then engaged in the sealing groove 3. The multi-stage drive device 9 is then turned off. This ensures that the motor stator is sealed within the potting shell 1.

[0041] S2. Glue injection: Open the control valve 11, and then use a vacuum machine to draw the potting tank 4 inside the potting shell 1 into a vacuum state through the glue injection tube 10. Then inject the epoxy resin into the potting tank 4 through the glue injection tube 10. After the potting tank 4 is filled with epoxy resin, the glue injection is completed and the control valve 11 is closed.

[0042] S3. Preliminary heating: First, use the lower heating component 17 to preliminarily heat the epoxy resin liquid at the bottom of the potting tank 4 for a short time. Power on the lower inner heating ring plate 1702 and the lower outer heating ring plate 1704 and adjust the heating temperature to 80℃. After heating for 10 minutes, the preliminary heating is completed. The epoxy resin liquid on the outer side of the bottom of the motor stator in the potting tank 4 is slightly solidified, while the epoxy resin liquid on the outer side of the top of the motor stator is still in a fluid state.

[0043] S4. Applying adhesive to the bottom of the motor stator: Connect the adhesive application tubes 14 on all four sides of the sealing base 2 to an external oil pump. Use the adhesive pump to draw epoxy resin into the ring groove 12 inside the potting tank 4. At the same time, start the drive unit 601. The drive unit 601 can push the mounting plate 602 upward. At the same time, the limiting seal block 7 can move from the potting tank 4 into the control cavity 5 and the slot 8. The epoxy resin drawn in by the bottom adhesive pump can quickly fill the space left in the potting tank 4 after the limiting seal block 7 is moved out. When the adhesive pump draws the epoxy resin into the potting tank 4, it can push the motor stator upward under hydraulic action. The slightly solidified epoxy resin at the bottom can limit the movement range of the motor stator. After the space inside the potting tank 4 is filled again, the adhesive application is completed.

[0044] S5. Heating and curing of epoxy resin: The upper heating component and the lower heating component are used to heat the inside of the potting shell 1. The upper inner heating ring plate 1602, the upper outer heating ring plate 1604, the lower inner heating ring plate 1702 and the lower outer heating ring plate 1704 are all powered on and the heating temperature is adjusted to 90℃. The curing is completed by heating for 40 minutes.

[0045] S6. End Repair: After the cured motor stator cools down, start the multi-stage hydraulic equipment. The multi-stage equipment will push the potting shell 1 upwards, and the motor stator can be separated from the potting shell 1. After removing the motor stator, use the cutting equipment to cut the epoxy resin at the top and bottom ends of the motor stator, and control the end glue thickness to be 3-5cm.

[0046] Example 3:

[0047] As shown in Figure 1 and Figure 5 As shown, a vacuum constant temperature epoxy potting device for a linear motor stator includes a potting shell 1 and a sealing base 2 disposed at the bottom of the potting shell 1 for bottom sealing. The sealing base 2 has a sealing groove 3 for sealing connection with the bottom of the potting shell 1. The bottom of the potting shell 1 is locked in the sealing groove 3. A potting groove 4 is formed inside the bottom of the potting shell 1. A control cavity 5 is formed inside the top of the inner wall of the potting groove 4.

[0048] In specific implementations, such as Figure 2 and Figure 5As shown, a volume control assembly 6 is provided inside the potting shell 1. The volume control assembly 6 includes a drive component 601 and a mounting plate 602. The drive component 601 is fixedly installed on the inner wall of the potting shell 1. The mounting plate 602 is located inside the control cavity 5 and is mounted on the output shaft of the drive component 601. The drive component 601 is one of a hydraulic cylinder, a pneumatic cylinder, and an electric telescopic rod. Four volume-limiting sealing blocks 7 are evenly installed on the bottom of the mounting plate 602 to limit the position of the motor stator and control the volume of the potting groove 4. Four locking slots 8 are provided between the potting groove 4 and the control cavity. The volume-limiting sealing blocks 7 are locked in the locking slots 8 and their bottoms are located inside the potting groove 4. A multi-stage drive device 9 for controlling the movement of the potting shell 1 is fixedly installed on the sealing base 2. The drive component 601 is fixedly installed on one end of the multi-stage drive device 9. It is one of a multi-stage hydraulic cylinder, a multi-stage pneumatic cylinder, and a multi-stage electric telescopic rod. A glue injection pipe 10 is installed on one side of the top of the potting shell 1. A control valve 11 is installed on the glue injection pipe 10. A receiving ring groove 12 for placing the motor stator is opened on the inner wall of the sealing groove 3. An installation groove 13 is opened between the receiving ring groove 12 and the four outer walls of the sealing base 2. A glue filling pipe 14 is installed in the installation groove 13. The volume of the receiving ring groove 12 is the same as the volume of the portion of the limiting sealing block 7 set in the potting groove 4. A solenoid valve 15 is installed on the glue filling pipe 14. An upper heating assembly 16 and a lower heating assembly 17 are provided inside the potting shell 1.

[0049] In specific implementations, such as Figure 2 As shown, the upper heating assembly 16 includes an upper inner ring shell 1601, an upper inner heating ring plate 1602, an upper outer ring shell 1603, and an upper outer heating ring plate 1604. The lower heating assembly 17 includes a lower inner ring shell 1701, a lower inner heating ring plate 1702, a lower outer ring shell 1703, and a lower outer heating ring plate 1704. The upper inner ring shell 1601 and the lower inner ring shell 1701 are both installed on the inner wall of the potting shell 1. The upper inner ring shell 1601 is located on top of the lower inner ring shell 1701. The upper inner heating ring plate 1602 is installed inside the upper inner ring shell 1601, and the lower inner heating ring plate 1702 is installed inside the lower inner ring shell 1701. The upper outer ring shell 1603 and the lower outer ring shell 1704 are also included. All are installed on the outer side wall of the potting shell 1. The upper outer ring shell 1603 is set on top of the lower outer ring shell 1603. The upper outer heating ring plate 1604 is installed inside the upper outer ring shell 1603, and the lower outer heating ring plate 1704 is installed inside the lower outer ring shell 1703.

[0050] A filling process for vacuum constant temperature epoxy potting of linear motor stator, the filling process includes the following steps:

[0051] S1. Placement of the motor stator: The multi-stage drive device 9 pushes the potting shell 1 upwards, separating it from the sealing base 2. The bottom of the motor stator is then placed into the receiving annular groove 12 on the sealing base 2. After stable placement, the multi-stage drive device 9 is controlled to pull the potting shell 1 downwards. The bottom of the potting shell 1 is then engaged in the sealing groove 3. The multi-stage drive device 9 is then turned off. This ensures that the motor stator is sealed within the potting shell 1.

[0052] S2. Glue injection: Open the control valve 11, and then use a vacuum machine to draw the potting tank 4 inside the potting shell 1 into a vacuum state through the glue injection tube 10. Then inject the epoxy resin into the potting tank 4 through the glue injection tube 10. After the potting tank 4 is filled with epoxy resin, the glue injection is completed and the control valve 11 is closed.

[0053] S3. Preliminary heating: First, use the lower heating component 17 to preliminarily heat the epoxy resin liquid at the bottom of the potting tank 4 for a short time. Power on the lower inner heating ring plate 1702 and the lower outer heating ring plate 1704 and adjust the heating temperature to 85℃. After heating for 10 minutes, the preliminary heating is completed. The epoxy resin liquid on the outer side of the bottom of the motor stator in the potting tank 4 is slightly solidified, while the epoxy resin liquid on the outer side of the top of the motor stator is still in a fluid state.

[0054] S4. Applying adhesive to the bottom of the motor stator: Connect the adhesive application tubes 14 on all four sides of the sealing base 2 to an external oil pump. Use the adhesive pump to draw epoxy resin into the ring groove 12 inside the potting tank 4. At the same time, start the drive unit 601. The drive unit 601 can push the mounting plate 602 upward. At the same time, the limiting seal block 7 can move from the potting tank 4 into the control cavity 5 and the slot 8. The epoxy resin drawn in by the bottom adhesive pump can quickly fill the space left in the potting tank 4 after the limiting seal block 7 is moved out. When the adhesive pump draws the epoxy resin into the potting tank 4, it can push the motor stator upward under hydraulic action. The slightly solidified epoxy resin at the bottom can limit the movement range of the motor stator. After the space inside the potting tank 4 is filled again, the adhesive application is completed.

[0055] S5. Heating and curing of epoxy resin: The upper heating component and the lower heating component are used to heat the inside of the potting shell 1. The upper inner heating ring plate 1602, the upper outer heating ring plate 1604, the lower inner heating ring plate 1702 and the lower outer heating ring plate 1704 are all powered on and the heating temperature is adjusted to 90℃. The curing is completed by heating for 40 minutes.

[0056] S6. End Repair: After the cured motor stator cools down, start the multi-stage hydraulic equipment. The multi-stage equipment will push the potting shell 1 upwards, and the motor stator can be separated from the potting shell 1. After removing the motor stator, use the cutting equipment to cut the epoxy resin at the top and bottom ends of the motor stator, and control the end glue thickness to be 3-5cm.

[0057] When potting using the above three sets of embodiments, the initial heating temperatures in Embodiments 1, 2, and 3 were 75°C, 80°C, and 85°C, respectively. After curing, the epoxy resin thickness at the bottom of the motor stator in Embodiment 1 was less than 1 cm, which could not meet the cutting requirements. In Embodiment 2, the epoxy resin thickness at the bottom of the motor stator after curing was 6.45 cm, which could meet the cutting requirements. In Embodiment 3, the epoxy resin thickness at the bottom of the motor stator after curing was 2.68 cm, which could not meet the cutting requirements, and there were obvious air bubbles in the epoxy resin at the top of the motor stator. Therefore, the potting process provided in Embodiment 2 can achieve the best potting effect.

[0058] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0059] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider 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 vacuum constant-temperature epoxy potting device for a linear motor stator, characterized in that, include A potting shell (1) and a sealing base (2) provided at the bottom of the potting shell (1) for bottom sealing. The sealing base (2) is provided with a sealing groove (3) for sealing connection with the bottom of the potting shell (1). The bottom of the potting shell (1) is locked in the sealing groove (3). The bottom of the potting shell (1) is provided with a potting groove (4), and the top of the inner wall of the potting groove (4) is provided with a control cavity (5). The potting shell (1) is provided with a volume control component (6). The bottom of the volume control component (6) is evenly equipped with four volume-limiting sealing blocks (7) for limiting the position of the motor stator and controlling the volume of the potting groove (4). Four slots (8) are provided between the filling groove (4) and the control cavity (5). The volume-limiting sealing block (7) is locked in the slot (8) and the bottom of the volume-limiting sealing block (7) is located in the filling groove (4). A multi-stage drive device (9) for controlling the movement of the potting shell (1) is fixedly installed on the sealing base (2). A glue injection tube (10) is installed on one side of the top of the potting shell (1). A control valve (11) is installed on the glue injection tube (10). A receiving ring groove (12) for placing the motor stator is opened on the inner wall of the sealing groove (3). An installation groove (13) is opened between the receiving ring groove (12) and the four outer walls of the sealing base (2). A glue filling tube (14) is installed in the installation groove (13). A solenoid valve (15) is installed on the glue filling tube (14). The potting shell (1) is provided with an upper heating assembly (16) and a lower heating assembly (17).

2. The linear motor stator vacuum constant temperature epoxy potting device according to claim 1, characterized in that: The volume control component (6) includes a drive element (601) and a mounting plate (602). The drive element (601) is fixedly installed on the inner wall of the potting shell (1). The mounting plate (602) is disposed in the control cavity (5). The mounting plate (602) is installed on the output shaft of the drive element (601). The volume limiting sealing block (7) is installed at the bottom of the mounting plate (602). The drive element (601) is fixedly installed at one end of the multi-stage drive device (9).

3. The linear motor stator vacuum constant temperature epoxy potting device according to claim 1, characterized in that: The upper heating assembly (16) includes an upper inner ring shell (1601), an upper inner heating ring plate (1602), an upper outer ring shell (1603), and an upper outer heating ring plate (1604). The lower heating assembly (17) includes a lower inner ring shell (1701), a lower inner heating ring plate (1702), a lower outer ring shell (1703), and a lower outer heating ring plate (1704). The upper inner ring shell (1601) and the lower inner ring shell (1701) are both installed on the inner wall of the potting shell (1). The upper inner ring shell (1601) is disposed on the lower inner ring shell (1701). At the top, the upper inner heating ring plate (1602) is installed inside the upper inner ring shell (1601), the lower inner heating ring plate (1702) is installed inside the lower inner ring shell (1701), the upper outer ring shell (1603) and the lower outer ring shell (1703) are both installed on the outer side wall of the potting shell (1), the upper outer ring shell (1603) is located at the top of the lower outer ring shell, the upper outer heating ring plate (1604) is installed inside the upper outer ring shell (1603), and the lower outer heating ring plate (1704) is installed inside the lower outer ring shell (1703).

4. The linear motor stator vacuum constant temperature epoxy potting device according to claim 1, characterized in that: The volume of the accommodating annular groove (12) is the same as the volume of the portion of the limiting sealing block (7) disposed inside the potting groove (4).

5. A filling process for vacuum constant-temperature epoxy potting of a linear motor stator, characterized in that: The filling process includes the following steps: S1. Placement of the motor stator: The potting shell (1) is pushed upward by the multi-stage drive device (9). After the potting shell (1) is separated from the sealing base (2), the bottom of the motor stator is placed in the receiving ring groove (12) on the sealing base (2). After stable placement, the multi-stage drive device (9) is controlled to pull the potting shell (1) downward. After the bottom of the potting shell (1) is inserted into the sealing groove (3), the multi-stage drive device (9) is turned off. At this time, it can be ensured that the motor stator is sealed in the potting shell (1). S2, Injection: Open the control valve (11), and then use a vacuum machine to draw the potting tank (4) inside the potting shell (1) to a vacuum state through the injection pipe (10). Then inject the epoxy resin liquid into the potting tank (4) through the injection pipe (10). After the potting tank (4) is filled with epoxy resin liquid, the injection is completed and the control valve (11) is closed. S3. Preliminary heating: First, use the lower heating component (17) to preliminarily heat the epoxy resin liquid at the bottom of the potting tank (4) for a short time. Then, turn on the lower inner heating ring plate (1702) and the lower outer heating ring plate (1704) and adjust the heating temperature to 75-85℃. After heating for 10 minutes, the preliminary heating is completed. The epoxy resin liquid on the outer side of the bottom of the motor stator in the potting tank (4) is slightly solidified, while the epoxy resin liquid on the outer side of the top of the motor stator is still in a fluid state. S4. Applying glue to the bottom of the motor stator: Connect the glue application tubes (14) on the four sides of the sealing base (2) to the external oil pump. Use the glue pump to draw epoxy resin into the inner ring groove (12) of the potting tank (4). At the same time, start the drive unit (601). The drive unit (601) can push the mounting plate (602) upward. At the same time, the limiting seal block (7) can move from the potting tank (4) to the control cavity (5) and the slot (8). The epoxy resin drawn in by the bottom glue pump can quickly fill the space left in the potting tank (4) after the limiting seal block (7) is moved out. When the glue pump draws the epoxy resin into the potting tank (4), it can push the motor stator upward under the action of hydraulic pressure. The slightly solidified epoxy resin at the bottom can limit the movement range of the motor stator. After the space in the potting tank (4) is filled again, the glue application is completed. S5. Heating and curing of epoxy resin: The upper heating component and the lower heating component are used to heat the inside of the potting shell (1). The upper inner heating ring plate (1602), the upper outer heating ring plate (1604), the lower inner heating ring plate (1702) and the lower outer heating ring plate (1704) are all powered on and the heating temperature is adjusted to 90℃. The curing is completed after heating for 40 minutes. S6. End Repair: After the motor stator has cooled down after curing, start the multi-stage hydraulic equipment. The multi-stage equipment will push the potting shell (1) upwards so that the motor stator can be separated from the potting shell (1). After taking out the motor stator, use the cutting equipment to cut the epoxy resin glue at the top and bottom ends of the motor stator and control the end glue thickness to be 3-5cm.

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