Glue pouring device and glue pouring process for motor stator

Abstract

The invention relates to the technical field of motor stator glue pouring, and discloses a motor stator glue pouring device and a glue pouring technology.The motor stator glue pouring device comprises a case, a baking mechanism is arranged at the top of the inner side of the case, a lifting mechanism is arranged at the bottom of the inner side of the case, and a positioning mechanism is arranged at the top of the lifting mechanism; a vacuum pump is arranged on one side of the machine box, a storage mechanism, a feeding mechanism and a sealing mechanism are arranged on the top of the machine box, the feeding mechanism comprises a feeding barrel, a piston disc, a first electric push rod and a communicating pipe, the bottom of the feeding barrel communicates with a circular pipe, and the outer side of the circular pipe is rotationally sleeved with a glue pouring pipe. The outer side of the glue pouring pipe is fixedly sleeved with an annular pipe. The device is reasonable in design, the baking mechanism, the lifting mechanism, the positioning mechanism, the vacuum mechanism and the cooling mechanism are integrated, the full-automatic process is achieved, all the steps such as preheating sealing, vacuumizing, glue filling spraying and gradient cooling are executed in a coordinated mode through the electric control push rod and the motor, and manual intervention is reduced.

Description

Technical Field

[0001] This invention relates to the field of motor stator potting technology, and in particular to a motor stator potting device and potting process. Background Technology

[0002] Currently, stator encapsulation for motors mainly relies on semi-automated equipment. This equipment typically includes a basic encapsulation mechanism, fixed fixtures, and a simple temperature control unit. During the process, sealing the stator cavity often involves pre-placed solid sealants or manual application of sealant, while the encapsulation process is mostly carried out under normal pressure or localized negative pressure. The sealant is injected into the stator gaps through a single pipe, relying on natural flow to fill the space. Cooling is achieved either through natural cooling from the ambient temperature or by heating the entire system and then cooling it uniformly. While this type of equipment can basically meet the encapsulation requirements, it has significant limitations in terms of sealing reliability, sealant uniformity, and bubble control, making it difficult to meet the production requirements of high-precision motors.

[0003] Existing glue-filling processes face multiple technical bottlenecks: First, conventional sealing methods cannot achieve dynamic sealing effects. Manually pre-embedded solid seals, limited by dimensional tolerances and thermal expansion characteristics, cannot expand instantaneously during preheating to completely fill the stator cavity gaps, leading to glue seepage into the cavity during glue filling, contaminating the windings or magnetic circuit structure. Second, traditional single-tube glue-filling methods rely on the glue's own weight flow, easily forming air bubbles or uneven filling in narrow gaps and dead corners. Vacuum-assisted defoaming only targets the equipment cavity, not the gas inside the glue, and cannot eliminate localized air bubble accumulation. Third, the glue layer curing process lacks gradient temperature control; overall heating or natural cooling easily causes thermal stress concentration in the glue, leading to cracking or peeling from the stator substrate. Fourth, the operation process relies on manual intervention for positioning and starting / stopping the equipment, resulting in low automation, difficulty in ensuring process consistency, and the separation of cooling and glue-filling stages prolongs the production cycle. These defects severely restrict the insulation performance, mechanical strength, and long-term reliability of the motor stator; therefore, we propose a motor stator glue-filling device and process to solve this problem. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings mentioned in the background section by providing a motor stator potting device and potting process.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A motor stator glue-filling device includes: a chassis, a baking mechanism disposed on the top inner side of the chassis, a lifting mechanism disposed on the bottom inner side of the chassis, a positioning mechanism disposed on the top of the lifting mechanism, a vacuum pump disposed on one side of the chassis, and a storage mechanism, a feeding mechanism, and a sealing mechanism disposed on the top of the chassis. The feeding mechanism includes: a feeding cylinder, a piston disc, a first electric push rod, and a connecting pipe. A circular tube is connected to the bottom of the feeding cylinder. A glue-filling tube is rotatably sleeved on the outer side of the circular tube. An annular tube is fixedly sleeved on the outer side of the glue-filling tube. Vacuum suction tubes are connected to both sides of the bottom of the annular tube. A fixed tube is rotatably sleeved on the outer side of the annular tube. The two ends of the connecting pipe are respectively connected to the feeding cylinder and the fixed tube.

[0007] Preferably, the glue-filling tube includes: a circular tube segment and a connecting segment, the top of the connecting segment is connected to the circular tube segment, the bottom two sides of the connecting segment are connected to branch segments, the bottom end of the branch segments is connected to a bent tube segment, and the cross-section of the bent tube segment and the branch segments are both provided with a flat and elongated shape;

[0008] A positioning plate is provided on the outer side of the branch section. The positioning plate is fixedly sleeved on the outer side of the vacuum suction tube. An arc-shaped section is provided at the top of the vacuum suction tube. Multiple connecting holes communicating with the fixed tube are opened on the outer side of the annular tube. A fixing rod is fixedly installed at the top of the fixed tube. The top of the fixing rod is fixedly connected to the top inner wall of the machine box. A first one-way valve is provided in the connecting tube. An exhaust pipe is connected to the top of the feeding cylinder. A second one-way valve is provided in the exhaust pipe.

[0009] Preferably, the piston disc is slidably installed inside the feeding cylinder, a first pressure sensor is fixedly installed on the top of the piston disc, the first electric push rod is fixedly installed on the top of the feeding cylinder, and the output end of the first electric push rod is fixedly installed on the top of the first pressure sensor.

[0010] A flow meter and a first electrically controlled valve are installed inside the circular tube. The storage mechanism includes a storage tank and a horizontal tube. The storage tank and the feeding cylinder are both fixedly installed on the top of the machine casing. The horizontal tube connects the storage tank and the feeding cylinder. A second electrically controlled valve is installed inside the horizontal tube. A limit ring is fixedly sleeved on the outside of the circular tube. The limit ring movably abuts against the inside of the glue-dispensing tube. A feed inlet is opened on the top of the storage tank. A sealing plug is installed inside the feed inlet.

[0011] Preferably, the sealing mechanism includes: a first motor and a semi-circular cover plate, the output end of the first motor is fixedly installed on the top of the semi-circular cover plate, the first motor is fixedly installed on the top of the chassis, the top of the chassis has an air inlet, a filter screen is provided in the air inlet, the semi-circular cover plate is movably abutted against the top of the air inlet, the sealing mechanism is configured as two sets, a pressure gauge is provided on the top of the chassis, and the air inlet of the vacuum pump is connected to the chassis.

[0012] Preferably, the front side of the chassis has a placement hole, and a vertical guide rail and a baffle are fixedly installed on the front side of the chassis. A sealing cover is slidably sleeved on the outer side of the vertical guide rail. The sealing cover is movably abutted against the front end of the placement hole, and the baffle abuts against the front side of the sealing cover.

[0013] Preferably, the lifting mechanism includes: a second electric push rod and a lifting platform, wherein the second electric push rod is fixedly installed on the top inner wall of the housing, and the lifting platform is fixedly installed on the output end of the second electric push rod;

[0014] The positioning mechanism includes a support platform and multiple clamping plates. A second pressure sensor is fixedly installed on the outer side of the clamping plates. Multiple fixing plates are fixedly installed on the top of the support platform. A third electric push rod is fixedly installed inside the fixing plates. The output end of the electric third push rod is fixedly connected to a corresponding second pressure sensor. An installation shaft is fixedly installed on one side of the support platform. The installation shaft is rotatably installed inside the lifting platform. A third motor is fixedly installed at the bottom of the lifting platform. The installation shaft is fixedly installed on the output shaft of the third motor. The multiple clamping plates are arranged in a ring with equal spacing. A cooling module is embedded inside the clamping plates.

[0015] Preferably, the baking mechanism includes: a housing, a fourth motor, and fan blades. A fixed frame, an upper heating grid, and a lower heating grid are fixedly installed inside the housing. The fourth motor is fixedly installed inside the fixed frame, and the fan blades are fixedly installed on the output shaft of the fourth motor.

[0016] The present invention also provides a motor stator potting process, applied to the above-mentioned motor stator potting device, comprising the following steps:

[0017] S1. Preparation before glue dispensing: Place the stator on the support platform, start the third electric push rod to drive the clamping plate to abut against the outside of the stator to achieve positioning. Then, temporarily place a mold core made of a material with a high coefficient of thermal expansion in the inner cavity of the stator to prepare for sealing the inner cavity of the stator later.

[0018] S2. Preheating and Sealing: Start the third motor to drive the mounting shaft and support platform to rotate, so that the stator is directly below the baking mechanism. Start the fourth motor, upper heating grid and lower heating grid to drive the fan blades to rotate, thereby generating high-temperature hot air blowing downwards, realizing synchronous preheating of the stator and the mold core. Utilizing the principle of thermal expansion and contraction, the mold core expands after being heated, which can tightly fill the gap between it and the stator, thereby forming an effective seal and preventing the glue from flowing into the inner cavity of the stator during glue pouring.

[0019] S3. Vacuuming: Start the two first motors to drive the two semi-circular cover plates to rotate, so that the two semi-circular cover plates abut against and seal the air inlet, so that a sealed environment is formed inside the chassis. Then start the vacuum pump to evacuate the chassis, and use a pressure gauge to monitor the vacuum level to ensure the vacuum level.

[0020] S4. Vacuum Dispensing: Start the third motor to rotate the mounting shaft and support platform, positioning the stator directly below the dispensing tube. Activate the second electric push rod to move the lifting platform upwards, allowing both ends of the dispensing tube to extend into the gap between the mold core and the stator. Close the first solenoid valve, open the second electromagnet, and control the output end of the first electric push rod to retract, causing the piston disc to move upwards and feeding the adhesive stored in the storage tank into the feeding cylinder. Close the second electromagnet, open the first solenoid valve, and control the output end of the first electric push rod to extend, causing the piston disc to move downwards and feeding the adhesive in the feeding cylinder into the circular tube, then into the circular section of the dispensing tube, and through the connecting section into two branch sections. Finally, it is ejected through two bends, generating a reverse thrust during the ejection process. Force is applied to rotate the dispensing tube, causing the two curved sections of the dispensing tube to rotate in a circular motion. This ensures that the adhesive is evenly sprayed into the gap between the mold core and the stator, preventing the formation of air bubbles. During the dispensing process, the amount of adhesive is monitored by a flow meter. When the piston disc moves downward to deliver the adhesive into the stator, a negative pressure is generated in the upper cavity of the piston disc. This negative pressure is then generated in the fixed tube through the connecting pipe. The fixed tube, through the annular pipe, further generates a negative pressure in the vacuum suction tube, enhancing the adsorption effect on air bubbles in the adhesive and achieving further defoaming. As the adhesive is gradually sprayed into the stator, the second electric push rod is activated to drive the lifting platform to move slowly downward, maintaining a constant distance between the dispensing tube and the adhesive in the stator to ensure the dispensing effect.

[0021] S5. Cooling treatment: Each time the piston disc moves upward, the cooling module in the clamping plate is activated to cool the stator, thereby cooling after each layer of adhesive is sprayed, achieving gradient cooling of the adhesive, and reducing the internal stress caused by rapid cooling of the adhesive; during the cooling process, the adhesive gradually solidifies and sets; at the same time, the mold core shrinks due to the decrease in temperature, creating conditions for the subsequent removal of the mold core.

[0022] Compared with the prior art, the present invention provides a motor stator glue-filling device and glue-filling process, which has the following beneficial effects:

[0023] (1) During the process of applying glue to the motor stator, it is a common problem that the glue seeps into the stator cavity, which can easily lead to component contamination or functional failure. This device solves this challenge through the design of the mold core in the preheating step. Specifically, the mold core is made of a material with a high coefficient of thermal expansion. It expands when heated during the preheating stage and tightly fills the gaps in the stator cavity to form a reliable seal. This ensures that the glue can only flow to the designated area on the outside during the application of glue, preventing any leakage. In this way, the stator cavity remains dry and clean, eliminating the need for additional cleaning steps, reducing rework rate and scrap rate. Ultimately, product quality is improved, component life is significantly extended, and the motor has higher stability and electrical performance during operation.

[0024] (2) The generation of air bubbles during glue dispensing is a major defect, which will lead to a decrease in the strength of the glue layer or a decrease in insulation. This device and process efficiently eliminates air bubbles through a vacuum environment and a dual defoaming mechanism. The vacuum pump creates a closed negative pressure environment during the vacuuming stage, which, together with the annular tube and vacuum suction tube, adsorbs the gas in the glue liquid, forming a dynamic defoaming process. At the same time, the design of the glue dispensing tube generates negative pressure when spraying the glue liquid, further adsorbing residual air bubbles. This makes the glue liquid flow smoothly and evenly, with no air bubble residue. As a result, the glue layer forms a defect-free and dense structure, which enhances the insulation and mechanical performance of the motor, avoids the risk of short circuit or failure during operation, and improves the overall durability and safety of the equipment.

[0025] (3) Traditional glue dispensing often suffers from uneven distribution, affecting filling quality and efficiency. This device achieves uniform spraying through the unique design of the glue dispensing tube and the rotation mechanism. Specifically, when the glue is sprayed from the curved section, a reverse thrust is generated, which drives the glue dispensing tube to rotate automatically, covering the gap between the mold core and the stator in a circular motion. The branch section and flat long cross section design ensure that the glue is fully dispersed without the need for manual adjustment. This process improves the uniformity of coverage and eliminates the phenomenon of local over-thickness or under-thickness. At the same time, the flow meter monitors the glue volume in real time and maintains a constant spacing with the lifting mechanism to optimize the spraying effect. This greatly reduces the defect rate and improves glue dispensing efficiency, making it suitable for mass production needs.

[0026] (4) Rapid cooling of the adhesive can easily generate internal stress, leading to cracking or delamination. The cooling process in the process mitigates this risk by gradually reducing the temperature layer by layer. The cooling module is activated immediately after each layer of adhesive is sprayed to locally cool the stator, achieving slow curing and temperature balance. This gradient method avoids thermal shock and allows the adhesive layer to gradually cure and solidify, thereby uniformly releasing internal stress. At the same time, the preheated mold core shrinks during the cooling process, making it easy to remove later. The whole process enhances the adhesive layer bonding strength and stability, preventing the product from deforming or failing due to temperature changes during use, ultimately extending the motor life and reducing maintenance costs.

[0027] (5) Traditional glue dispensing relies on manual operation, which is prone to low efficiency and inconsistency. This device integrates baking, lifting, positioning, vacuuming and cooling mechanisms into one unit to realize a fully automated process. Each step, such as preheating and sealing, vacuuming, glue dispensing and spraying and gradient cooling, is executed in coordination by electric push rods and motors, reducing manual intervention. The positioning mechanism ensures that the stator is accurately fixed, the cooling module responds instantly, and the vacuum pump automatically maintains a negative pressure environment. This makes the entire process highly efficient in the machine, improving processing speed and consistency. Users benefit from simple operation and reliable output. It is suitable for diversified production lines, reduces resource waste, and promotes the manufacturing process towards intelligence and sustainability. Attached Figure Description

[0028] Figure 1 This is a three-dimensional structural schematic diagram of a motor stator glue-filling device proposed in this invention;

[0029] Figure 2 This is a cross-sectional view of a motor stator glue-filling device proposed in this invention;

[0030] Figure 3 This is a partial cross-sectional view of a motor stator glue-filling device proposed in this invention;

[0031] Figure 4 for Figure 3 A magnified view of part A in the middle;

[0032] Figure 5 This is a three-dimensional structural diagram of the dispensing tube and vacuum suction tube proposed in this invention;

[0033] Figure 6 This is a cross-sectional structural schematic diagram of the lifting mechanism and positioning mechanism proposed in this invention;

[0034] Figure 7 This is a cross-sectional view of the baking mechanism proposed in this invention.

[0035] In the diagram: 1. Chassis; 2. Sealing cover; 201. Baffle; 202. Vertical guide rail; 3. Sealing mechanism; 301. First motor; 302. Semi-circular cover; 4. Feeding mechanism; 401. Feeding cylinder; 402. First electric push rod; 403. First pressure sensor; 404. Piston disc; 405. Exhaust pipe; 406. Second one-way valve; 407. Connecting pipe; 408. First one-way valve; 5. Storage mechanism; 501. Storage box; 502. Horizontal pipe; 503. Second electric control valve; 504. Sealing plug; 6. Baking mechanism; 601. Housing; 602. Fixing frame; 603. Fourth motor; 604. Fan blade; 605. Upper heating mesh; 606. Lower heating mesh 7. Heating network; 8. Lifting mechanism; 701. Second electric push rod; 702. Lifting platform; 703. Third motor; 704. Mounting shaft; 9. Positioning mechanism; 801. Support platform; 802. Fixing plate; 803. Third electric push rod; 804. Second pressure sensor; 805. Clamping plate; 10. Circular tube; 901. First electric control valve; 902. Flow meter; 11. Ring tube; 12. Glue-filling tube; 13. Circular tube section; 14. Connecting section; 15. Branch section; 16. Bend section; 17. Fixing tube; 18. Fixing rod; 19. Limiting ring; 10. Vacuum suction tube; 11. Positioning plate; 11. Filter screen; 12. Pressure gauge; 13. Vacuum pump. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0037] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "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.

[0038] Reference Figure 1-7A motor stator glue-filling device includes: a housing 1, a baking mechanism 6 provided on the top inner side of the housing 1, a lifting mechanism 7 provided on the bottom inner side of the housing 1, a positioning mechanism 8 provided on the top of the lifting mechanism 7, a vacuum pump 18 provided on one side of the housing 1, and a storage mechanism 5, a feeding mechanism 4 and a sealing mechanism 3 provided on the top of the housing 1. The feeding mechanism 4 includes: a feeding cylinder 401, a piston disc 404, a first electric push rod 402 and a connecting pipe 407. The bottom of the feeding cylinder 401 is connected to a circular pipe 9. A glue-filling tube 11 is rotatably sleeved on the outside of the circular pipe 9. An annular pipe 10 is fixedly sleeved on the outside of the glue-filling tube 11. Vacuum suction tubes 14 are connected to both sides of the bottom of the annular pipe 10. A fixed pipe 12 is rotatably sleeved on the outside of the annular pipe 10. The two ends of the connecting pipe 407 are respectively connected to the feeding cylinder 401 and the fixed pipe 12.

[0039] In this embodiment, the glue-filling tube 11 includes: a circular tube section 1101 and a connecting section 1102. The top of the connecting section 1102 is connected to the circular tube section 1101. The bottom sides of the connecting section 1102 are connected to branch sections 1103. The bottom end of the branch section 1103 is connected to a bent tube section 1104. The cross-sections of the bent tube section 1104 and the branch section 1103 are both provided to be flat and elongated.

[0040] A positioning plate 15 is provided on the outer side of the branch section 1103. The positioning plate 15 is fixedly sleeved on the outer side of the vacuum suction tube 14. An arc-shaped section is provided at the top of the vacuum suction tube 14. Multiple connecting holes communicating with the fixed tube 12 are opened on the outer side of the annular tube 10. A fixing rod 1201 is fixedly installed on the top of the fixed tube 12. The top of the fixing rod 1201 is fixedly connected to the top inner wall of the machine box 1. A first one-way valve 408 is provided in the connecting tube 407. An exhaust pipe 405 is connected to the top of the feeding cylinder 401. A second one-way valve 406 is provided in the exhaust pipe 405.

[0041] In this embodiment, the piston disc 404 is slidably installed inside the feeding cylinder 401, the top of the piston disc 404 is fixedly installed with a first pressure sensor 403, the first electric push rod 402 is fixedly installed on the top of the feeding cylinder 401, and the output end of the first electric push rod 402 is fixedly installed on the top of the first pressure sensor 403.

[0042] A flow meter 902 and a first electrically controlled valve 901 are installed inside the circular tube 9. The storage mechanism 5 includes a storage tank 501 and a horizontal tube 502. The storage tank 501 and the feeding cylinder 401 are both fixedly installed on the top of the machine box 1. The horizontal tube 502 connects the storage tank 501 and the feeding cylinder 401. A second electrically controlled valve 503 is installed inside the horizontal tube 502. A limit ring 13 is fixedly sleeved on the outside of the circular tube 9. The limit ring 13 is movably abutted against the inside of the glue-filling tube 11. A feed inlet is opened on the top of the storage tank 501. A sealing plug 504 is installed inside the feed inlet.

[0043] In this embodiment, the sealing mechanism 3 includes: a first motor 301 and a semi-circular cover plate 302. The output end of the first motor 301 is fixedly installed on the top of the semi-circular cover plate 302. The first motor 301 is fixedly installed on the top of the housing 1. An air inlet is provided on the top of the housing 1. A filter screen 16 is provided inside the air inlet. The semi-circular cover plate 302 is movably abutted against the top of the air inlet. The sealing mechanism 3 is configured as two sets. A pressure gauge 17 is provided on the top of the housing 1. The air inlet of the vacuum pump 18 is connected to the housing 1.

[0044] In this embodiment, a placement hole is provided on the front side of the chassis 1. A vertical guide rail 202 and a baffle 201 are fixedly installed on the front side of the chassis 1. A sealing cover 2 is slidably sleeved on the outer side of the vertical guide rail 202. The sealing cover 2 is movably abutted against the front end of the placement hole, and the baffle 201 abuts against the front side of the sealing cover 2.

[0045] In this embodiment, the lifting mechanism 7 includes: a second electric push rod 701 and a lifting platform 702. The second electric push rod 701 is fixedly installed on the top inner wall of the housing 1, and the lifting platform 702 is fixedly installed on the output end of the second electric push rod 701.

[0046] The positioning mechanism 8 includes a support platform 801 and multiple clamping plates 805. A second pressure sensor 804 is fixedly installed on the outer side of the clamping plate 805. Multiple fixing plates 802 are fixedly installed on the top of the support platform 801. A third electric push rod 803 is fixedly installed inside the fixing plate 802. The output end of the electric third push rod 803 is fixedly connected to the corresponding second pressure sensor 804. An installation shaft 704 is fixedly installed on one side of the support platform 801. The installation shaft 704 is rotatably installed inside the lifting platform 702. A third motor 703 is fixedly installed at the bottom of the lifting platform 702. The installation shaft 704 is fixedly installed on the output shaft of the third motor 703. The multiple clamping plates 805 are arranged in a ring with equal spacing. A cooling module is embedded inside the clamping plate 805.

[0047] In this embodiment, the baking mechanism 6 includes: a housing 601, a fourth motor 603, and a fan blade 604. A fixing frame 602, an upper heating grid 605, and a lower heating grid 606 are fixedly installed inside the housing 601. The fourth motor 603 is fixedly installed inside the fixing frame 602, and the fan blade 604 is fixedly installed on the output shaft of the fourth motor 603.

[0048] The present invention also provides a motor stator potting process, applied to the above-mentioned motor stator potting device, comprising the following steps:

[0049] S1. Preparation before glue dispensing: Place the stator on the support platform 801, start the third electric push rod 803 to drive the clamping plate 805 to abut against the outside of the stator to achieve positioning. Then, temporarily place a mold core made of a material with a high coefficient of thermal expansion in the inner cavity of the stator to prepare for sealing the inner cavity of the stator later.

[0050] S2. Preheating and Sealing: Start the third motor 703 to drive the mounting shaft 704 and the support platform 801 to rotate, so that the stator is located directly below the baking mechanism 6. Start the fourth motor 603, the upper heating grid 605 and the lower heating grid 606 to drive the fan blades 604 to rotate, thereby generating high-temperature hot air blowing downwards, realizing synchronous preheating of the stator and the mold core. Utilizing the principle of thermal expansion and contraction, the mold core expands after being heated, which can tightly fill the gap between it and the stator, thereby forming an effective seal and preventing the glue from flowing into the inner cavity of the stator during glue pouring.

[0051] S3. Vacuuming: Start the two first motors 301 to drive the two semi-circular cover plates 302 to rotate, so that the two semi-circular cover plates 302 abut against and seal the air inlet, so that the inside of the chassis 1 is sealed. Then start the vacuum pump 18 to evacuate the chassis 1, and use the pressure gauge 17 to monitor the vacuum level and ensure the vacuum level.

[0052] S4. Vacuum potting: Start the third motor 703 to drive the mounting shaft 704 and support platform 801 to rotate, so that the stator is directly below the potting tube 11. Start the second electric push rod 701 to drive the lifting platform 702 to move upward, so that both ends of the potting tube 11 extend into the gap between the mold core and the stator. Close the first solenoid valve, open the second electromagnet, and control the output end of the first electric push rod 402 to retract, driving the piston plate 404 to move upward, sending the glue stored in the storage box 501 into the feeding cylinder 401. Close the second electromagnet, open the first solenoid valve, and control the output end of the first electric push rod 402 to extend, driving the piston plate 404 to move downward, sending the glue in the feeding cylinder 401 into the round tube, and into the round tube section 1101 of the potting tube 11. Then, it enters the two branch sections 1103 through the connecting section 1102, and finally is sprayed out through the two bend sections 1104. During the spraying process, a reverse thrust is generated, which drives the glue-dispensing tube 11 to rotate, thereby causing the two bent sections 1104 of the glue-dispensing tube 11 to perform circular motion, so as to evenly spray the glue into the gap between the mold core and the stator and avoid the formation of air bubbles. During the glue dispensing process, the glue volume is monitored by the flow meter 902. When the piston plate 404 moves downward to send the glue into the stator, the upper cavity of the piston plate 404 generates negative pressure, which in turn generates negative pressure in the fixed tube 12 through the connecting pipe 407. The fixed tube 12 generates negative pressure in the vacuum suction tube 14 through the annular pipe 10, which enhances the adsorption effect on air bubbles in the glue and achieves further defoaming. As the glue is gradually sprayed into the stator, the second electric push rod 701 is activated to drive the lifting platform 702 to move slowly downward, so as to maintain a constant distance between the glue-dispensing tube 11 and the glue in the stator and ensure the glue dispensing effect.

[0053] S5. Cooling treatment: Each time the piston disc 404 moves upward, the cooling module in the clamping plate 805 is activated to cool the stator, thereby cooling after each layer of adhesive is sprayed, achieving gradient cooling of the adhesive, and reducing the internal stress caused by rapid cooling of the adhesive; during the cooling process, the adhesive gradually solidifies and sets; at the same time, the mold core shrinks due to the decrease in temperature, creating conditions for the subsequent removal of the mold core.

[0054] In this embodiment, the baking, lifting, positioning, vacuuming, and cooling mechanisms are integrated into one unit to achieve a fully automated process. Each step, such as preheating and sealing, vacuuming, glue spraying, and gradient cooling, is executed in coordination by electronically controlled push rods and motors, reducing manual intervention. The positioning mechanism 8 ensures precise fixation of the stator, the cooling module responds instantly, and the vacuum pump 18 automatically maintains a negative pressure environment. This allows the entire process to be carried out efficiently within the chassis 1, improving processing speed and consistency. Users benefit from ease of operation and reliable output. It is suitable for diverse production lines, reducing resource waste and promoting the manufacturing process towards intelligence and sustainability.

[0055] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

Claims

1. A motor stator glue-filling device, characterized in that, include: A chassis (1) is provided with a baking mechanism (6) on the top inner side of the chassis (1), a lifting mechanism (7) is provided on the bottom inner side of the chassis (1), a positioning mechanism (8) is provided on the top of the lifting mechanism (7), a vacuum pump (18) is provided on one side of the chassis (1), and a storage mechanism (5), a feeding mechanism (4) and a sealing mechanism (3) are provided on the top of the chassis (1). The feeding mechanism (4) includes: a feeding cylinder (401), a piston disc (404), and a first electric push rod (405). 02) and connecting pipe (407), the bottom of the feeding cylinder (401) is connected to a circular pipe (9), the outer side of the circular pipe (9) is rotatably sleeved with a glue-filling pipe (11), the outer side of the glue-filling pipe (11) is fixedly sleeved with an annular pipe (10), both sides of the bottom of the annular pipe (10) are connected to vacuum suction pipes (14), the outer side of the annular pipe (10) is rotatably sleeved with a fixed pipe (12), and the two ends of the connecting pipe (407) are respectively connected to the feeding cylinder (401) and the fixed pipe (12).

2. The motor stator glue-filling device according to claim 1, characterized in that, The glue-filling tube (11) includes: a circular tube section (1101) and a connecting section (1102). The top of the connecting section (1102) is connected to the circular tube section (1101). The bottom sides of the connecting section (1102) are connected to branch sections (1103). The bottom end of the branch section (1103) is connected to a bent tube section (1104). The cross-sections of the bent tube section (1104) and the branch section (1103) are both flat and elongated. A positioning plate (15) is provided on the outer side of the branch section (1103). The positioning plate (15) is fixedly sleeved on the outer side of the vacuum suction tube (14). An arc-shaped section is provided at the top of the vacuum suction tube (14). Multiple connecting holes communicating with the fixed tube (12) are opened on the outer side of the annular tube (10). A fixing rod (1201) is fixedly installed on the top of the fixed tube (12). The top of the fixing rod (1201) is fixedly connected to the top inner wall of the machine box (1). A first one-way valve (408) is provided in the connecting tube (407). An exhaust pipe (405) is connected to the top of the feeding cylinder (401). A second one-way valve (406) is provided in the exhaust pipe (405).

3. The motor stator glue-filling device according to claim 1, characterized in that, The piston disc (404) is slidably installed inside the feeding cylinder (401). A first pressure sensor (403) is fixedly installed on the top of the piston disc (404). The first electric push rod (402) is fixedly installed on the top of the feeding cylinder (401). The output end of the first electric push rod (402) is fixedly installed on the top of the first pressure sensor (403). The circular tube (9) is equipped with a flow meter (902) and a first electrically controlled valve (901). The storage mechanism (5) includes a storage tank (501) and a horizontal tube (502). The storage tank (501) and the feeding cylinder (401) are both fixedly installed on the top of the machine box (1). The horizontal tube (502) connects the storage tank (501) and the feeding cylinder (401). A second electrically controlled valve (503) is installed inside the horizontal tube (502). A limit ring (13) is fixedly sleeved on the outside of the circular tube (9). The limit ring (13) moves against the inside of the glue-filling tube (11). The top of the storage tank (501) is provided with a feed inlet. A sealing plug (504) is provided inside the feed inlet.

4. The motor stator glue-filling device according to claim 1, characterized in that, The sealing mechanism (3) includes: a first motor (301) and a semi-circular cover plate (302). The output end of the first motor (301) is fixedly installed on the top of the semi-circular cover plate (302). The first motor (301) is fixedly installed on the top of the chassis (1). An air inlet is provided on the top of the chassis (1). A filter screen (16) is provided inside the air inlet. The semi-circular cover plate (302) is movably abutted against the top of the air inlet. The sealing mechanism (3) is configured in two sets. A pressure gauge (17) is provided on the top of the chassis (1). The air inlet of the vacuum pump (18) is connected to the chassis (1).

5. The motor stator potting device according to claim 1, characterized in that, The front side of the chassis (1) has a placement hole. A vertical guide rail (202) and a baffle (201) are fixedly installed on the front side of the chassis (1). A sealing cover plate (2) is slidably sleeved on the outer side of the vertical guide rail (202). The sealing cover plate (2) is movably abutted against the front end of the placement hole. The baffle plate (201) abuts against the front side of the sealing cover plate (2).

6. The motor stator glue-filling device according to claim 1, characterized in that, The lifting mechanism (7) includes: a second electric push rod (701) and a lifting platform (702). The second electric push rod (701) is fixedly installed on the top inner wall of the housing (1), and the lifting platform (702) is fixedly installed on the output end of the second electric push rod (701). The positioning mechanism (8) includes: a support platform (801) and multiple clamping plates (805). A second pressure sensor (804) is fixedly installed on the outer side of the clamping plate (805). Multiple fixing plates (802) are fixedly installed on the top of the support platform (801). A third electric push rod (803) is fixedly installed inside the fixing plate (802). The output end of the electric third electric push rod (803) is fixedly connected to a corresponding second pressure sensor (804). An installation shaft (704) is fixedly installed on one side of the support platform (801). The installation shaft (704) is rotatably installed inside the lifting platform (702). A third motor (703) is fixedly installed at the bottom of the lifting platform (702). The installation shaft (704) is fixedly installed on the output shaft of the third motor (703). The multiple clamping plates (805) are arranged in a ring with equal spacing. A cooling module is embedded inside the clamping plate (805).

7. The motor stator potting device according to claim 1, characterized in that, The baking mechanism (6) includes: a housing (601), a fourth motor (603), and a fan blade (604). A fixing frame (602), an upper heating grid (605), and a lower heating grid (606) are fixedly installed inside the housing (601). The fourth motor (603) is fixedly installed inside the fixing frame (602), and the fan blade (604) is fixedly installed on the output shaft of the fourth motor (603).

8. A motor stator potting process, applied to the motor stator potting apparatus of claim 7, characterized in that, Includes the following steps: S1. Preparation before glue dispensing: Place the stator on the support platform (801), start the third electric push rod (803) to drive the clamping plate (805) to abut against the outside of the stator to achieve positioning. Then, temporarily place a mold core made of a material with a high coefficient of thermal expansion in the inner cavity of the stator to prepare for sealing the inner cavity of the stator later. S2, Preheating and Sealing: Start the third motor (703) to drive the mounting shaft (704) and support platform (801) to rotate, so that the stator is located directly below the baking mechanism (6). Start the fourth motor (603), upper heating mesh (605) and lower heating mesh (606) to drive the fan blades (604) to rotate, thereby generating high-temperature hot air blowing downwards, realizing synchronous preheating of the stator and the mold core. Utilizing the principle of thermal expansion and contraction, the mold core expands after being heated, which can tightly fill the gap between it and the stator, thereby forming an effective seal and preventing the glue from flowing into the inner cavity of the stator during glue pouring. S3, Vacuuming: Start the two first motors (301) to drive the two semi-circular cover plates (302) to rotate, so that the two semi-circular cover plates (302) abut and seal the air inlet, so that the inside of the chassis (1) forms a sealed environment. Then start the vacuum pump (18) to evacuate the chassis (1) and monitor the vacuum level through the pressure gauge (17) to ensure the vacuum level. S4, Vacuum potting: Start the third motor (703) to drive the mounting shaft (704) and support platform (801) to rotate, so that the stator is directly below the potting tube (11). Start the second electric push rod (701) to drive the lifting platform (702) to move upward, so that both ends of the potting tube (11) extend into the gap between the mold core and the stator. Close the first solenoid valve, open the second electromagnet, and control the output end of the first electric push rod (402) to retract, driving the piston disc (404) to move upward. The system moves the adhesive stored in the storage tank (501) into the feeding cylinder (401), closes the second electromagnet, opens the first solenoid valve, and controls the output end of the first electric push rod (402) to extend, driving the piston disc (404) to move downward, sending the adhesive in the feeding cylinder (401) into the round tube, and into the round tube section (1101) of the glue dispensing tube (11), and then through the connecting section (1102) into the two branch sections (1103), and finally through the two bend sections (1104). 04) Spraying out, the spraying process generates a reverse thrust, which drives the glue-dispensing tube (11) to rotate, thereby driving the two bent sections (1104) of the glue-dispensing tube (11) to perform circular motion, so as to evenly spray the glue into the gap between the mold core and the stator and avoid the formation of air bubbles. During the glue dispensing process, the glue usage is monitored by the flow meter (902), and when the piston plate (404) moves downward to send the glue into the stator, the upper cavity of the piston plate (404) generates a negative pressure, thereby passing through The connecting pipe (407) creates negative pressure in the fixed pipe (12), and the fixed pipe (12) further creates negative pressure in the vacuum suction pipe (14) through the annular pipe (10), which enhances the adsorption effect on the bubbles in the adhesive and thus achieves further defoaming. As the adhesive is gradually sprayed into the stator, the second electric push rod (701) is activated to drive the lifting platform (702) to move slowly downward, so as to maintain a constant distance between the glue-filling pipe (11) and the adhesive in the stator, and ensure the glue-filling effect. S5. Cooling treatment: Each time the piston disc (404) moves upward, the cooling module in the clamping plate (805) is activated to cool the stator, so that cooling can be carried out after each layer of adhesive is sprayed, realizing the gradient cooling of the adhesive and reducing the internal stress caused by rapid cooling of the adhesive; during the cooling process, the adhesive gradually solidifies and sets; at the same time, the mold core shrinks due to the decrease in temperature, creating conditions for the subsequent removal of the mold core.

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