Rotor filling and sealing tool

Abstract

The invention relates to a rotor filling and sealing tool in the field of engine rotor manufacturing, and the rotor filling and sealing tool comprises a lower pressing ring and an upper pressing ring, a rotor structure is packaged between the lower pressing ring and the upper pressing ring, and a protection shell matched with the rotor structure is clamped between the lower pressing ring and the upper pressing ring; the protective shell comprises a main shell body, a plurality of air pipes distributed circumferentially are connected to the outer wall of the main shell body, a plurality of nozzles distributed at equal intervals are connected between the air pipes and the main shell body, a flow equalizing air plate is arranged between every two adjacent nozzles, a four-way electromagnetic valve is connected between the nozzles and the air pipes, and the output ends of the flow equalizing air plates are located on the inner side of the main shell body. The rotor structure comprises a balance end plate, the upper side of the balance end plate is provided with a plurality of uniformly distributed rotor main bodies, and the bottom ends of the rotor main bodies are clamped with auxiliary supporting plates; a plurality of groups of key holes are formed in the rotor main body, and magnetic steel is embedded in the key holes; the heat dissipation efficiency of the rotor and the magnetic steel can be easily ensured, and the rotor body or the magnetic steel can be accurately cooled.

Description

Technical Field

[0001] The 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] The rotor potting tooling technology is mainly used in the production process of motor rotors. Its core principle is to pour insulating materials into the slots of the rotor to fix and insulate the coils and improve the performance and reliability of the motor. With the development of the motor industry and the improvement of motor performance requirements, rotor potting technology came into being. With the development of automation technology, automated potting tooling has gradually replaced manual operations, significantly improving production efficiency and potting quality.

[0003] At present, rotor potting tooling technology has developed to a highly automated stage, using precision metering pumps and computer control systems to achieve accurate metering and uniform distribution of potting materials. In addition, advanced tooling design can adapt to rotors of different sizes and shapes, achieving rapid changeover.

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

[0005] The specification of Chinese invention patent CN113949229B discloses a rotor shaft potting device and a rotor shaft potting method. During potting, the rotor is placed horizontally, potting glue is added from the lead inlet, and the potting glue flows toward the rotor shaft potting device, gradually filling the shaft hole, and the air in the shaft hole is discharged through the exhaust hole. The potting process no longer requires turning over the equipment, and after potting, the solidification process of the potting glue is also completed when the rotor is placed horizontally, which solves the problem of low production efficiency caused by solidifying the potting glue on the turning equipment.

[0006] 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. The internal microstructure of the magnetic steel will change at high temperatures. When the temperature exceeds a certain threshold, irreversible demagnetization may occur, that is, the magnetic steel cannot recover to its original magnetic level after cooling. The current rotor potting tooling is insufficient in accurately cooling the magnetic steel. 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] In order to solve the above problems, the present invention provides a rotor potting tool, comprising a lower pressure ring and an upper pressure ring, 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; The protective shell comprises a main shell, a plurality of air pipes distributed in a circumference are connected to the outer wall of the main shell, a plurality of nozzles distributed at equal distances are connected between the air pipe and the main shell, a flow-equalizing plate is arranged between two adjacent nozzles, a four-way solenoid valve is connected between the nozzle and the air pipe, two side output ends of the four-way solenoid valve are respectively connected to two flow-equalizing plates, and the output end of the flow-equalizing plate is located on the inner side of the main shell; The rotor structure includes a balancing end plate, a plurality of evenly distributed rotor bodies are arranged on the upper side of the balancing end plate, an auxiliary support plate is clamped at the bottom end of the rotor body; a rotating shaft is clamped between the rotor structure and the balancing end plate; A positioning hole is provided in the middle of the rotor body, and a plurality of key holes are provided on the positioning hole and are distributed in a circumference, and magnetic steel is embedded in the key holes; The auxiliary support plate includes a main board body that is clamped at the bottom end of the rotor body, and a plurality of clamping plates that match the positions of the magnetic steels are installed on the main board body. A plurality of heat dissipation blocks are embedded and installed at the outer end of the main board body, and the heat dissipation blocks and the clamping plates are connected with heat conductive plates; the installation height of the nozzle matches the position of the auxiliary support plate.

[0009] 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.

[0010] As a further improvement of the present application, at least one pair of magnets is arranged in each group of key holes, and a slot matching the heat dissipation insert is opened at the bottom end of the magnet. When the magnet is engaged with the heat dissipation insert, the bottom end of the magnet fits against the lower surface of the auxiliary support plate.

[0011] As a further improvement of the present application, a guide groove is provided on the balancing end plate, and the guide groove includes an inner ring groove and an outer ring groove, and a plurality of 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 key hole respectively.

[0012] 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.

[0013] 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.

[0014] As another improvement of the present application, a fixing ring is installed at the top end of the upper pressure ring, and a plurality of docking joints matching the air pipes are installed on the fixing ring.

[0015] As another improvement of the present application, the four-way solenoid valve includes a pair of side output ends connected to the flow equalizing gas 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 side output ends are opened synchronously when the pair of side output ends are opened. Multiple four-way solenoid valves connected to the same air pipe are grouped together and controlled synchronously.

[0016] 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 groove.

[0017] As another improvement of the present application, it also includes a package auxiliary protection system, the package auxiliary protection system includes a processor, and the processor is connected to a control module and a monitoring module; The control module is connected with a motor controller and an air pump, the output end of the air pump is connected with a plurality of air pipes, and the motor controller is used to adjust the rotation angle of the shaft; the four-way solenoid valve is connected with 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.

[0018] In summary, the packaging tooling of this scheme has high reliability, and the packaging structure can easily ensure the heat dissipation efficiency of the rotor and the magnet, while accurately cooling the rotor body or the magnet, making it easy to avoid uneven heat dissipation and local overheating when the rotor structure is working, and easy to adapt to working in high temperature environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a stereogram of the first and second embodiments of the present application; Figure 2 It is a cross-sectional view of the first and second embodiments of the present application; Figure 3 for Figure 2 The structural diagram at A in the middle; Figure 4 Exploded diagram of the rotor body and the auxiliary support plate of the first and second embodiments of the present application; Figure 5 This is a schematic diagram of the bottom surface of the auxiliary support plate of the first and second embodiments of the present application; Figure 6 This is a three-dimensional diagram of the balancing end plate of the first and second embodiments of the present application; Figure 7 This is a system block diagram of the second implementation mode of this application.

[0020] Description of the numbers in the figure: 1 lower pressure ring; 2 upper pressure ring; 3 protective shell; 31 main shell; 32 air pipe; 33 nozzle; 34 four-way solenoid valve; 35 uniform flow plate; 351 guide plate; 352 air perforated plate; 5 balance end plate; 6 rotor body; 61 positioning hole; 611 rectangular convex strip; 62 magnetic steel; 7 auxiliary support plate; 71 main body; 72 card plate; 73 heat dissipation insert; 8 pair of joints. DETAILED DESCRIPTION

[0021] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0022] The first implementation method: Figure 1-6 It is shown that a rotor potting tool comprises a lower pressure ring 1 and an upper pressure ring 2, 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; 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 a suitable 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; A plurality of air pipes 32 distributed in a circumference are connected to the outer wall of the main shell 31, a plurality of nozzles 33 distributed in equal distances are connected between the air pipes 32 and the main shell 31, a flow-evening 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 connected to the two flow-evening plates 35, and the output end of the flow-evening plate 35 is located on the inner side of the main shell 31; The flow-evening plate 35 includes a guide plate 351 , and a vent plate 352 is installed at one end of the guide plate 351 located in 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.

[0023] The rotor structure includes a balancing end plate 5, and a plurality of evenly distributed rotor bodies 6 are arranged on the upper side of the balancing end plate 5. 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; and a gap is left between the rotor structure and the inner wall of the main housing 31; 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 fits against the lower surface of the auxiliary support plate 7.

[0024] The auxiliary support plate 7 includes a main board body 71 clamped on the bottom end of the rotor body 6, and a plurality of clamping plates 72 matching the position of the magnetic steel 62 are installed on the main board body 71. A plurality of heat dissipation blocks 73 are embedded and installed on the outer end of the main board body 71, and the heat dissipation blocks 73 and the clamping plates 72 are connected with heat conductive plates; the installation height of the nozzle 33 matches the position of the auxiliary support plate 7.

[0025] 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, and the inner ring groove and the outer ring groove correspond to the inner and outer positions of the keyhole respectively. The keyholes of the plurality of rotor bodies 6 are bonded and filled with thermally conductive packaging glue, and the thermally conductive packaging glue fills the guide groove, and the guide groove is used to connect all the key holes of the rotor body 6 so that the glue can evenly fill the plurality of rotor bodies 6.

[0026] In this embodiment, the protective shell 3 can assist the heat dissipation of the rotor body 6 and the magnetic steel 62. After the rotor structure is encapsulated, the 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-distributing plate 35. When the airflow is input into the flow balancing plate 35, the airflow first enters 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 range of multiple rotor bodies 6, so as to dissipate heat from the rotor bodies 6; When the airflow is input into the nozzle 33, the cooling airflow is concentratedly sprayed toward the auxiliary support plate 7 through the nozzle 33, so as to realize the centralized cooling of the auxiliary support plate 7. In particular, the airflow exchanges heat with the heat dissipation insert 73, so that the heat transferred by the magnetic steel 62 through the clamping plate 72 and the heat conducting sheet exchanges heat with the airflow, thereby realizing the targeted heat dissipation of the magnetic steel 62, and facilitating the rapid cooling of the magnetic steel 62 in the rotor body 6. Compared with the prior art which only dissipates heat for the rotor body 6, the present solution can dissipate heat for the magnetic steel 62 embedded in the rotor body 6, so that the magnetic steel 62 does not need to be cooled on the outside of the rotor body 6 and then cooled down, thereby ensuring that the magnetic steel 62 is cooled down quickly, so that the magnetic steel 62 is not easily damaged due to untimely heat dissipation when overheating.

[0027] Second implementation method: Figure 7 As 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.

[0028] The four-way solenoid valve 34 includes a pair of side output ends connected to the flow-averaging 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. Multiple four-way solenoid valves 34 connected to the same air pipe 32 are grouped into one group and are synchronously controlled. It also includes a package auxiliary protection system, which includes a processor, and a control module and a monitoring module are connected to the processor; The control module is connected with a motor controller and an air pump, the output end of the air pump is connected with 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 with the controller signal.

[0029] 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; The encapsulation auxiliary protection system of this embodiment, when working, 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 airflow to the air pipe 32 to cool down the environment inside the protective shell 3. When cooling down, if the shaft is still in a rotating state, the four-way solenoid valve 34 is controlled to open the side output end, so that the air flow is discharged through the flow-averaging plate 35 to concentrate the heat dissipation on the multiple rotor bodies 6; When cooling down, 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 at a set angle, so that the heat sink block 73 rotates to a position opposite to the nozzle 33. At this time, the magnetic steel 62 exchanges heat with the airflow through the card plate 72, the heat conducting sheet and the heat sink block 73 for cooling. When the shaft is driven to rotate, the rotation angle 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 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 from the nozzle 33.

[0030] This embodiment can realize automatic adjustment of the cooling method according to the working state of the shaft, so as to perform cooling treatment on the rotor body 6 or the magnetic steel 62 .

[0031] The packaging auxiliary protection system of this embodiment can automatically select the most suitable cooling method according to the working state of the shaft and the temperature change 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, avoiding the occurrence of local overheating.

[0032] In summary, the packaging tooling of this scheme has high reliability, and the packaging structure can easily ensure the heat dissipation efficiency of the rotor and the magnet, while accurately cooling the rotor body or the magnet, making it easy to avoid uneven heat dissipation and local overheating when the rotor structure is working, and easy to adapt to working in high temperature environments.

[0033] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. 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 scope of protection 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), the main shell (31), the outer wall of the main shell (31) being connected to a plurality of air pipes (32) distributed in a circumferential manner, a plurality of nozzles (33) distributed at equal intervals being connected between the air pipes (32) and the main shell (31), a flow balancing plate (35) being provided between two adjacent nozzles (33), a four-way solenoid valve (34) being connected between the nozzles (33) and the air pipe (32), two side output ends of the four-way solenoid valve (34) being respectively in communication with two flow balancing plates (35), and an output end of the flow balancing plate (35) being 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 arranged 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), a plurality of groups of key holes distributed in a circumference are provided on the positioning hole (61), and magnetic steel (62) is embedded in the key holes; The auxiliary support plate (7) comprises a main plate body (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 mounted on the main plate body (71); a plurality of heat dissipation inserts (73) are embedded and mounted 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).

2. A rotor potting tool according to claim 1, characterized in that: At least one pair of magnetic steels (62) is arranged in each group of key holes, 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: 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 key hole, respectively.

4. 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.

5. 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 shell (31).

6. 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.

7. The rotor potting tool according to claim 4, characterized in that: The four-way solenoid valve (34) comprises a pair of side output ends connected to the flow-evening plate (35) and a horizontal output end connected to the nozzle (33); the input end of the four-way solenoid valve (34) is in communication with the air pipe (32); the pair of side output ends are opened synchronously when opened; a plurality of four-way solenoid valves (34) connected to the same air pipe (32) are grouped together and are synchronously controlled.

8. The rotor potting tool according to claim 3, 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.

9. The rotor potting tool according to claim 7, characterized in that: It also includes a package auxiliary protection system, the package auxiliary protection system includes a processor, and the processor is 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 in communication with a plurality of air pipes (32), and the motor controller is used to adjust the rotation angle of the rotating 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).

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