A rotor potting tool

Abstract

The present invention relates to a rotor potting tool in the field of engine rotor manufacturing, a rotor potting tool comprising a lower pressure ring and an upper pressure ring, a rotor structure is encapsulated between the lower pressure ring and the upper pressure ring, a protective shell matching the rotor structure is clamped between the lower pressure ring and the upper pressure ring; the protective shell comprises a main shell, a plurality of air pipes distributed in a circumferential manner are connected to the outer wall of the main shell, a plurality of equally distributed nozzles are connected between the air pipes and the main shell, an equalizing air plate is provided between two adjacent nozzles, a four-way solenoid valve is connected between the nozzle and the air pipe, and the output end of the equalizing air plate is located on the inner side of the main shell; the rotor structure comprises a balancing end plate, a plurality of evenly distributed rotor bodies are provided on the upper side of the balancing end plate, an auxiliary support plate is clamped at the bottom end of the rotor body; the rotor body is provided with a plurality of groups of keyholes, and magnets are embedded in the keyholes; it is easy to ensure the heat dissipation efficiency of the rotor and the magnets, and at the same time, the rotor body or the magnets can be accurately cooled.

Description

Technical Field

[0001] The present invention relates to a rotor potting tool, in particular to a rotor potting tool used in the field of engine rotor manufacturing. Background Art

[0002] Rotor potting tooling technology is primarily used in the production of motor rotors. Its core principle is to pour insulating material into the rotor slots to secure and insulate the coils, improving motor performance and reliability. With the development of the motor industry and rising performance requirements, rotor potting technology has emerged. With the advancement of automation technology, automated potting tooling has gradually replaced manual operations, significantly improving production efficiency and potting quality.

[0003] Currently, rotor potting tooling technology has developed to a highly automated stage, using precision metering pumps and computer control systems to accurately measure and evenly distribute the potting material. Furthermore, advanced tooling design can accommodate rotors of varying sizes and shapes, enabling rapid changeovers.

[0004] In order to solve the problem of packaging sealing, a certain packaging tool in the market adopts the design of injection molding packaging, which has a certain market share.

[0005] Chinese invention patent CN113949229B discloses a rotor shaft potting device and method. During potting, the rotor is placed horizontally, and potting compound is added through the lead inlet. The compound flows toward the rotor shaft potting device, gradually filling the shaft hole. During this process, air in the shaft hole is discharged through the exhaust hole. The potting process eliminates the need to flip the device. After potting, the potting compound solidifies while the rotor is placed horizontally, eliminating the inefficiency associated with solidifying the potting compound on a flipping device.

[0006] The rotor potting tooling in the existing technology may not be able to effectively ensure the heat dissipation efficiency of the rotor and the magnets inside it. The internal microstructure of the magnets will change at high temperatures. When the temperature exceeds a certain threshold, irreversible demagnetization may occur, that is, the magnets cannot return to their original magnetic level after cooling. The current rotor potting tooling has shortcomings in accurately cooling the magnets. Summary of the Invention

[0007] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the rotor potting tooling in the prior art may not be able to effectively ensure the heat dissipation efficiency of the rotor and the magnetic steel therein.

[0008] To solve the above problems, the present invention provides a rotor potting tool, comprising a lower pressure ring and an upper pressure ring, wherein a plurality of long bolts are connected between the lower pressure ring and the upper pressure ring, a rotor structure is encapsulated between the lower pressure ring and the upper pressure ring, and a protective shell matching the rotor structure is clamped between the lower pressure ring and the upper pressure ring;

[0009] The protective shell includes a main shell, a plurality of air pipes distributed in a circumferential manner are connected to the outer wall of the main shell, a plurality of equally distributed nozzles are connected between the air pipes and the main shell, a flow equalizing plate is provided between two adjacent nozzles, a four-way solenoid valve is connected between the nozzle and the air pipe, and the two side output ends of the four-way solenoid valve are respectively connected to the two flow equalizing plates, and the output end of the flow equalizing plate is located on the inner side of the main shell;

[0010] The rotor structure includes a balancing end plate, on the upper side of which a plurality of evenly distributed rotor bodies are arranged, and the bottom end of the rotor body is clamped with an auxiliary support plate; a rotating shaft is clamped between the rotor structure and the balancing end plate;

[0011] A positioning hole is opened in the middle of the rotor body, and a plurality of key holes are opened on the positioning hole in a circumferential distribution, and magnetic steel is embedded in the key holes;

[0012] The auxiliary support plate includes a main plate body that is clamped to the bottom end of the rotor body, and a plurality of clamping plates that match the positions of the magnetic steel are installed on the main plate body. A plurality of heat dissipation inserts are embedded and installed on the outer end of the main plate body, and the heat dissipation inserts and the clamping plates are connected with heat conducting plates; the installation height of the nozzle matches the position of the auxiliary support plate.

[0013] In the above-mentioned rotor potting tooling, the packaging structure can easily ensure the heat dissipation efficiency of the rotor and the magnetic steel, and can also accurately cool the rotor body or the magnetic steel.

[0014] As a further improvement of the present application, at least one pair of magnets is provided in each group of keyholes, and a slot matching the heat dissipation insert is provided at the bottom end of the magnet. When the magnet is engaged with the heat dissipation insert, the bottom end of the magnet fits into the lower surface of the auxiliary support plate.

[0015] As a further improvement of the present application, a guide groove is provided on the balancing end plate, which includes an inner ring groove and an outer ring groove. Multiple connecting channels are provided between the inner ring groove and the outer ring groove, and the inner ring groove and the outer ring groove correspond to the inner and outer positions of the keyhole respectively.

[0016] As a further improvement of the present application, a rectangular convex strip is provided at the positioning hole, a strip groove matching the rectangular convex strip is opened on the rotating shaft, and an angle sensor is installed at the strip groove.

[0017] As another improvement of the present application, the flow equalizing plate includes a guide plate, and an air perforated plate is installed at one end of the guide plate located in the main shell.

[0018] As another improvement of the present application, a fixing ring is installed on the top of the upper pressure ring, and a plurality of docking joints matching the trachea are installed on the fixing ring.

[0019] As another improvement of the present application, the four-way solenoid valve includes a pair of side output ends connected to the flow equalizing plate and a horizontal output end connected to the nozzle. The input end of the four-way solenoid valve is connected to the air pipe, and the pair of side output ends are opened synchronously when opened. Multiple four-way solenoid valves connected to the same air pipe are grouped together and controlled synchronously.

[0020] As another improvement of the present application, the key holes of the multiple rotor bodies are bonded and filled with thermally conductive packaging adhesive, and the thermally conductive packaging adhesive fills the guide grooves.

[0021] As another improvement of the present application, a packaged auxiliary protection system is also included, the packaged auxiliary protection system includes a processor, and the processor is connected to a control module and a monitoring module;

[0022] The control module is connected to a motor controller and an air pump. The output end of the air pump is connected to multiple air pipes. The motor controller is used to control the rotation angle of the shaft. The four-way solenoid valve is connected to the controller signal.

[0023] The angle sensor is connected to the monitoring module signal, and a temperature sensor connected to the monitoring module signal is installed in the protective shell.

[0024] In summary, the packaging tooling of this solution has high reliability, and the packaging structure can easily ensure the heat dissipation efficiency of the rotor and the magnet. At the same time, it can accurately cool the rotor body or the magnet, easily avoid uneven heat dissipation and local overheating when the rotor structure is working, and is easy to adapt to high temperature environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a perspective view of the first and second embodiments of the present application;

[0026] Figure 2 Cross-sectional views of the first and second embodiments of the present application;

[0027] Figure 3 for Figure 2 Schematic diagram of the structure at A in the middle;

[0028] Figure 4 Exploded views of the rotor body and auxiliary support plate of the first and second embodiments of the present application;

[0029] Figure 5 Schematic diagram of the bottom surface of the auxiliary support plate of the first and second embodiments of this application;

[0030] Figure 6 This is a three-dimensional diagram of the balancing end plate of the first and second embodiments of the present application;

[0031] Figure 7 This is a system block diagram of the second implementation method of this application.

[0032] Description of the numbers in the figure:

[0033] 1. Lower pressure ring; 2. Upper pressure ring; 3. Protective shell; 3. Main shell; 3. Air pipe; 3. Nozzle; 3. Four-way solenoid valve; 3. Air flow plate; 3. Guide plate; 3. Air vent plate; 5. Balance end plate; 6. Rotor body; 6. Positioning hole; 6. Rectangular ridge; 6. Magnet; 7. Auxiliary support plate; 7. Main body; 7. Card plate; 7. Heat sink; 8. Connectors. DETAILED DESCRIPTION

[0034] The following describes two implementation methods of the present application in detail with reference to the accompanying drawings.

[0035] The first implementation method:

[0036] Figure 1-6 A rotor potting tool is shown, comprising a lower pressure ring 1 and an upper pressure ring 2, wherein a plurality of long bolts are connected between the lower pressure ring 1 and the upper pressure ring 2, a rotor structure is encapsulated between the lower pressure ring 1 and the upper pressure ring 2, and a protective shell 3 matching the rotor structure is clamped between the lower pressure ring 1 and the upper pressure ring 2;

[0037] The protective shell 3 includes a main shell 31, and the stator winding can be installed in the main shell 31. During installation, a person skilled in the art selects an appropriate installation method to install the stator winding in the main shell to ensure that the stator winding and the rotor structure work normally after installation;

[0038] The outer wall of the main housing 31 is connected to a plurality of air pipes 32 distributed in a circular pattern. A plurality of equally spaced nozzles 33 are connected between the air pipes 32 and the main housing 31. A flow equalizing plate 35 is provided between two adjacent nozzles 33. A four-way solenoid valve 34 is connected between the nozzles 33 and the air pipe 32. The two side output ends of the four-way solenoid valve 34 are respectively connected to the two flow equalizing plates 35. The output end of the flow equalizing plate 35 is located inside the main housing 31.

[0039] The flow equalizing plate 35 includes a guide plate 351 , and a vent plate 352 is installed at one end of the guide plate 351 located inside the main shell 31 ; a fixing ring is installed at the top of the upper pressure ring 2 , and a plurality of docking joints 8 matching the air pipe 32 are installed on the fixing ring.

[0040] The rotor structure includes a balancing end plate 5, on the upper side of which are disposed a plurality of evenly distributed rotor bodies 6. A rotating shaft is clamped between the rotor structure and the balancing end plate 5. An auxiliary support plate 7 is clamped at the bottom end of the rotor body 6. A gap is left between the rotor structure and the inner wall of the main housing 31.

[0041] A positioning hole 61 is provided in the middle of the rotor body 6, and a plurality of groups of key holes distributed in a circumference are provided on the positioning hole 61, and magnets 62 are embedded in the key holes; at least one pair of magnets 62 is provided in each group of key holes, and a slot matching the heat dissipation insert 73 is provided at the bottom end of the magnet 62. When the magnet 62 is engaged with the heat dissipation insert 73, the bottom end of the magnet 62 is in contact with the lower surface of the auxiliary support plate 7.

[0042] The auxiliary support plate 7 includes a main plate body 71 that is clamped to the bottom end of the rotor body 6. A plurality of clamping plates 72 that match the positions of the magnets 62 are installed on the main plate body 71. A plurality of heat dissipation inserts 73 are embedded and installed on the outer end of the main plate body 71. The heat dissipation inserts 73 and the clamping plates 72 are connected to heat conducting plates. The installation height of the nozzle 33 matches the position of the auxiliary support plate 7.

[0043] A guide groove is provided on the balancing end plate 5, and the guide groove includes an inner ring groove and an outer ring groove. A plurality of connecting channels are provided between the inner ring groove and the outer ring groove. The inner ring groove and the outer ring groove correspond to the inner and outer positions of the keyhole respectively. The keyholes of the multiple rotor bodies 6 are bonded and filled with thermally conductive packaging glue, and the thermally conductive packaging glue fills the guide groove. The guide groove is used to connect all the keyholes of the rotor body 6 so that the glue can evenly fill the multiple rotor bodies 6.

[0044] In this embodiment, the protective shell 3 can assist in heat dissipation of the rotor body 6 and the magnet 62. After the rotor structure is encapsulated, air flow can be input into the air pipe 32, so that the air flow passes through the four-way solenoid valve 34 and is selectively input to the nozzle 33 or the flow plate 35.

[0045] When the airflow is input into the flow balancing plate 35, the airflow first flows into the guide plate 351, and then is split into multiple airflow beams through the air perforated plate 352 and enters the main housing 31, so that the input airflow covers a large area of ​​multiple rotor bodies 6, thereby dissipating the heat of the rotor bodies 6;

[0046] When airflow is input into the nozzle 33, the cooling airflow is sprayed toward the auxiliary support plate 7 through the nozzle 33, thereby achieving centralized cooling of the auxiliary support plate 7. In particular, the airflow exchanges heat with the heat sink 73, so that the heat transferred from the magnet 62 through the clamping plate 72 and the heat conducting sheet is exchanged with the airflow, thereby achieving targeted heat dissipation of the magnet 62, which facilitates rapid cooling of the magnet 62 in the rotor body 6.

[0047] Compared with the existing technology that only dissipates heat to the rotor body 6, this solution can dissipate heat to the magnets 62 embedded in the rotor body 6, so that the magnets 62 do not need to be cooled on the outside of the rotor body 6 before being cooled down, ensuring that the magnets 62 are cooled down quickly, so that the magnets 62 are not easily damaged due to failure to dissipate heat in time when overheating.

[0048] Second implementation method:

[0049] Figure 7As shown, a rectangular convex strip 611 is provided at the positioning hole 61, a strip groove matching the rectangular convex strip 611 is opened on the rotating shaft, and an angle sensor is installed at the strip groove.

[0050] The four-way solenoid valve 34 includes a pair of side output terminals connected to the flow-distributing plate 35 and a horizontal output terminal connected to the nozzle 33. The input terminal of the four-way solenoid valve 34 is connected to the air pipe 32. When the pair of side output terminals are opened, they open synchronously. Multiple four-way solenoid valves 34 connected to the same air pipe 32 are grouped together and controlled synchronously.

[0051] It also includes a packaged auxiliary protection system, which includes a processor, and a control module and a monitoring module are connected to the processor;

[0052] The control module is connected to a motor controller and an air pump. The output end of the air pump is connected to multiple air pipes 32. The motor controller is used to adjust the rotation angle of the shaft; the four-way solenoid valve 34 is connected to the controller signal.

[0053] The angle sensor is connected to the monitoring module signal, and a temperature sensor connected to the monitoring module signal is installed in the protective shell 3;

[0054] The encapsulated auxiliary protection system of this embodiment, when in operation, monitors the temperature inside the protective shell 3 through the monitoring module. When the monitored temperature value exceeds the set value, the control module controls the air pump to input cooling air into the air pipe 32 to cool the environment inside the protective shell 3.

[0055] During the cooling operation, if the shaft is still rotating, the four-way solenoid valve 34 is controlled to open the side output end, so that the air flow is discharged through the flow plate 35 to concentrate the heat dissipation on the multiple rotor bodies 6;

[0056] During the cooling operation, if the shaft stops rotating, the four-way solenoid valve 34 can be controlled to open the horizontal output end, so that the airflow is ejected through the nozzle 33. At this time, the control module can control the motor controller to drive the shaft to rotate the set angle, so that the heat sink 73 rotates to a position opposite to the nozzle 33. At this time, the magnet 62 exchanges heat with the airflow through the clamping plate 72, the heat conducting sheet and the heat sink 73 to cool down.

[0057] When the shaft is driven to rotate, the angle of rotation of the shaft is monitored by the angle sensor to ensure that the heat sink block 73 is accurately positioned when the position is adjusted. After the position of the heat sink block 73 is adjusted, the nozzle 33 outputs a set flow of cooling air to it, and then the shaft is driven to rotate to move the next heat sink block 73 to the nozzle 33. The above work is repeated until all the heat sink blocks 73 are cooled by the airflow ejected by the nozzle 33.

[0058] This embodiment can automatically adjust the cooling method according to the working state of the shaft to perform cooling treatment on the rotor body 6 or the magnetic steel 62.

[0059] The packaging auxiliary protection system of this embodiment can automatically select the most appropriate cooling method according to the working state of the rotating shaft and the temperature changes in the protective shell, ensuring the maximization of cooling efficiency and the rational use of energy, improving the overall heat dissipation efficiency of the rotor structure, and achieving uniform cooling of the rotor body and magnetic steel through the rational distribution and guidance of the airflow, thereby avoiding the occurrence of local overheating.

[0060] In summary, the packaging tooling of this solution has high reliability, and the packaging structure can easily ensure the heat dissipation efficiency of the rotor and the magnet. At the same time, it can accurately cool the rotor body or the magnet, easily avoid uneven heat dissipation and local overheating when the rotor structure is working, and is easy to adapt to high temperature environment.

[0061] In view of current actual needs, the protection scope of the above-mentioned implementation mode adopted in this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. A rotor potting tool, comprising a lower pressure ring (1) and an upper pressure ring (2), wherein a plurality of long bolts are connected between the lower pressure ring (1) and the upper pressure ring (2), characterized in that: A rotor structure is encapsulated between the lower pressure ring (1) and the upper pressure ring (2), and a protective shell (3) matching the rotor structure is clamped between the lower pressure ring (1) and the upper pressure ring (2); The protective shell (3) comprises a main shell (31), wherein the outer wall of the main shell (31) is connected to a plurality of air pipes (32) distributed in a circumferential manner, a plurality of nozzles (33) distributed at equal intervals are connected between the air pipes (32) and the main shell (31), a flow balancing plate (35) is provided between two adjacent nozzles (33), a four-way solenoid valve (34) is connected between the nozzles (33) and the air pipe (32), two side output ends of the four-way solenoid valve (34) are respectively communicated with two flow balancing plates (35), and the output end of the flow balancing plate (35) is located on the inner side of the main shell (31); The rotor structure comprises a balancing end plate (5), a plurality of evenly distributed rotor bodies (6) are provided on the upper side of the balancing end plate (5), and an auxiliary support plate (7) is clamped at the bottom end of the rotor body (6); a rotating shaft is clamped between the rotor structure and the balancing end plate (5); A positioning hole (61) is provided in the middle of the rotor body (6), and a plurality of key holes distributed in a circumferential manner are provided on the positioning hole (61), and magnetic steel (62) is embedded in the key holes; The auxiliary support plate (7) includes a main plate (71) clamped to the bottom end of the rotor body (6), a plurality of clamping plates (72) matching the positions of the magnetic steel (62) are installed on the main plate (71), a plurality of heat dissipation inserts (73) are embedded and installed on the outer end of the main plate (71), and the heat dissipation inserts (73) and the clamping plates (72) are connected to heat conducting plates; the installation height of the nozzle (33) matches the position of the auxiliary support plate (7); The four-way solenoid valve (34) includes a pair of side output ends connected to the flow-distributing plate (35) and a horizontal output end connected to the nozzle (33). The input end of the four-way solenoid valve (34) is connected to the air pipe (32). When the pair of side output ends are opened, they are opened synchronously. A plurality of four-way solenoid valves (34) connected to the same air pipe (32) are grouped together and controlled synchronously. The balancing end plate (5) is provided with a guide groove, the guide groove comprising an inner ring groove and an outer ring groove, a plurality of communication channels are provided between the inner ring groove and the outer ring groove, and the inner ring groove and the outer ring groove correspond to the inner and outer sides of the keyhole, respectively.

2. The rotor potting tool according to claim 1, characterized in that: At least one pair of magnetic steels (62) is provided in each group of keyholes, and a slot matching the heat dissipation insert (73) is provided at the bottom end of the magnetic steels (62). When the magnetic steels (62) are engaged with the heat dissipation insert (73), the bottom end of the magnetic steels (62) is in contact with the lower surface of the auxiliary support plate (7).

3. The rotor potting tool according to claim 1, characterized in that: A rectangular convex strip (611) is provided at the positioning hole (61), a strip groove matching the rectangular convex strip (611) is provided on the rotating shaft, and an angle sensor is installed at the strip groove.

4. The rotor potting tool according to claim 1, characterized in that: The flow balancing plate (35) comprises a guide plate (351), and a vent plate (352) is installed at one end of the guide plate (351) located inside the main housing (31).

5. The rotor potting tool according to claim 1, characterized in that: A fixing ring is installed at the top end of the upper pressure ring (2), and a plurality of docking joints (8) matching the air pipe (32) are installed on the fixing ring.

6. The rotor potting tool according to claim 1, characterized in that: The key holes of the plurality of rotor bodies (6) are bonded and filled with heat-conducting packaging adhesive, and the heat-conducting packaging adhesive fills the guide groove.

7. The rotor potting tool according to claim 1, characterized in that: Also included is a packaged auxiliary protection system, the packaged auxiliary protection system including a processor, the processor being connected to a control module and a monitoring module; The control module is connected to a motor controller and an air pump, the output end of the air pump is connected to a plurality of air pipes (32), and the motor controller is used to adjust the rotation angle of the shaft; the four-way solenoid valve (34) is connected to the controller signal; The angle sensor is connected to the monitoring module signal, and a temperature sensor connected to the monitoring module signal is installed in the protective shell (3).

Images