Forming and stamping device and method for processing stator core of permanent magnet synchronous servo motor

Abstract

The present invention discloses a forming stamping device and method for processing a permanent magnet synchronous servo motor stator core, which relates to the field of stamping technology, including a support frame, a stamping part is arranged at the upper end of the support frame, an indentation box is arranged at one side of the support frame, an upper pressing mechanism and a lower pressing mechanism are arranged inside the indentation box, and the upper pressing mechanism is located at the upper end of the lower pressing mechanism. The present invention can prevent the deformation of the stator sheet caused by excessive extrusion through the expansion and pressure of the airbag, ensure the shape and size stability of the stator sheet, the expansion of the airbag can provide uniform pressure, ensure that each stator sheet can be subjected to uniform pressure when stacked, improve the overall tightness and stability, the expansion of the airbag presses the stator sheet again, so that the grooves and bumps on the surface of the stator sheet can be tightly fixed together, the surface of the bump is adhered with adhesive, and the physical clamping of the grooves and the bumps is combined with the chemical bonding of the adhesive to ensure the structural stability and reliability of the stator core.

Description

Technical Field

[0001] The invention relates to the field of stamping technology, and in particular to a forming stamping device and method for processing a stator core of a permanent magnet synchronous servo motor. Background Art

[0002] For example, the invention patent with publication number CN118122863B is named as forming die for motor core stator punching sheet; it includes a stamping body and a processing table, a manipulator is arranged on the outside of the stamping body, the manipulator is used to grab the silicon steel sheet after stamping, the top of the processing table is fixedly connected with a die table, and the inside of the die table is slidably connected with a lower die. The device realizes that when the output end of the cylinder descends, it drives the power mechanism to run, and the power mechanism then drives the cutting knife to rotate through the adaptation mechanism, and causes scratches on the surface of the silicon steel plate. When the upper die formally stamps the silicon steel plate, the stress generated by the silicon steel plate has been significantly reduced because the silicon steel plate has released part of the stress due to the scratches. This not only optimizes the stamping effect, but also more effectively solves the problem of edge deformation of the silicon steel plate, and significantly improves the quality and stability of the product.

[0003] However, during the stamping and stacking process of the stator punching sheets of the motor core in the above-mentioned invention, the stator sheets are easily deformed due to excessive extrusion, affecting the size and shape stability of the stator core. The connection strength between the stator sheets is insufficient, and they are prone to loosening during long-term operation or in a high-vibration environment, affecting the stability and reliability of the motor. In addition, the gel curing time between the stator sheets is relatively long, resulting in an air gap inside the stator core and uneven gel distribution, which will lead to increased thermal resistance and affect the heat dissipation performance of the motor. The spot welding method may cause uneven distribution of welding points and local stress concentration, which will affect the structural stability and reliability of the stator core and cause increased vibration and noise during motor operation. Therefore, the present application provides a forming and stamping device and method for processing the stator core of a permanent magnet synchronous servo motor to meet the needs. Summary of the invention

[0004] The purpose of the present application is to provide a forming and stamping device and method for processing a stator core of a permanent magnet synchronous servo motor, which can effectively solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a forming and stamping device for processing a stator core of a permanent magnet synchronous servo motor, comprising a support frame, a stamping part is arranged at the upper end of the support frame, an indentation box is arranged at one side of the support frame, an upper pressing mechanism and a lower pressing mechanism are arranged inside the indentation box, the upper pressing mechanism is located at the upper end of the lower pressing mechanism, a stator sheet is placed at the upper end of the lower pressing mechanism, the upper pressing mechanism and the lower pressing mechanism are used to perform groove pressing on the stator sheet, a stamping mechanism for stamping the stator sheet is arranged at the bottom of the stamping part, a solid glue mechanism for reinforcing the stator core of the motor is arranged inside the support frame and below the stamping part, a pushing mechanism for supporting the stator sheets to be stacked into the stator core of the motor is arranged on the bottom wall of the inner cavity of the support frame and inside the solid glue mechanism, and two glue spraying mechanisms for spraying glue on the surface of the stator sheets are symmetrically arranged at the upper end of the support frame;

[0006] The upper pressing mechanism comprises a pressing rod, which is mounted on the lower end of the punching machine rod at the top of the inner wall of the indentation box, and a convex groove is arranged at the lower end of the pressing rod;

[0007] The pressing mechanism comprises a lower mold piece, which is fixedly mounted on the bottom of the inner wall of the indentation box. A mold groove is provided at the upper end of the lower mold piece, and the positions of the mold groove and the convex groove correspond one to one.

[0008] A plug rod is arranged inside the lower mold, a telescopic rod is arranged at the bottom of the plug rod, and a rubber inlet pipe communicating with the interior of the lower mold is arranged on the outer surface of the lower mold.

[0009] Among them, the pushing mechanism includes a push rod, which is fixedly installed at the bottom of the inner wall of the support frame. A discharge port is arranged inside the support frame. A bearing is arranged at the upper end of the push rod, a chuck is arranged at the upper end of the bearing, a control motor is arranged between the chuck and the push rod, a spacer is arranged on the outer surface of the chuck, a plurality of first springs distributed in a ring array are arranged between the spacer and the chuck, and a support rib is arranged at the upper end of the chuck.

[0010] Among them, the glue fixing mechanism includes a top ring, which is fixedly installed on the top of the inner wall of the support frame. Two air guide tubes are symmetrically arranged inside the top ring, and laser welding guns are arranged inside the two air guide tubes. An outer cover is arranged at the lower end of the top ring, and a number of inclined plates distributed in a circular array are arranged inside the outer cover.

[0011] The air guide pipe is connected with the interior of the outer cover, an air inlet pipe is arranged on the outer surface of the outer cover, a heating plate is arranged on the outer surface of the air inlet pipe, and a fan is arranged at one end of the air inlet pipe.

[0012] The punching mechanism comprises a die ring which is fixedly mounted on the lower end of the punching part and is vertically located just above the chuck.

[0013] Among them, a shaft rod is arranged in the middle of the inner cavity of the die ring, a pressure ring is slidably installed on the outer surface of the shaft rod, and the pressure ring is located inside the die ring. A second spring is arranged at the bottom of the pressure ring, and the second spring is sleeved on the outer surface of the shaft rod.

[0014] Among them, an air bag is arranged inside the pressure ring, a semi-circular tube is arranged inside the air bag, and air holes are opened on the outer surface of the semi-circular tube. An air tube is arranged on the outer surface of the semi-circular tube, and one end of the air tube passes through the air bag and the compression mold ring.

[0015] The glue spraying mechanism comprises a pressing block, which is fixedly mounted on the upper end of the support frame. A glue head tube is arranged inside the pressing block, and a glue spraying head for uniformly spraying glue on the surface of the stator sheet is arranged inside the glue head tube.

[0016] The present invention also provides a forming and stamping device method for processing a permanent magnet synchronous servo motor stator core. The motor stator core stamping and forming method is as follows:

[0017] S1, after stamping out the scraps of the metal sheet, the metal sheet is sent between the upper pressing mechanism and the lower pressing mechanism. The upper pressing mechanism punches the stator sheet so that a groove is formed at the upper end of the stator sheet and a bulge is formed at the lower end. The surface of the bulge that is squeezed into the lower pressing mechanism will be adhered with adhesive;

[0018] S2. After being punched by the lower pressing mechanism and the upper pressing mechanism, the stator sheet will be transported to the lower end of the punching mechanism. When the stator sheet moves to the lower end of the punching mechanism, the punching mechanism punches downward to cut the stator sheet, and the punched stator sheet will fall to the upper end of the push mechanism.

[0019] S3. After the stamping mechanism completes stamping of the stator sheet, the stamping mechanism moves upward and the glue spraying mechanism sprays gel on the surface of the stator sheet. When the next stator sheet moves to the bottom of the stamping mechanism, the two stator sheets can be stacked together after being stamped by the stamping mechanism, and the set glue solidifying mechanism solidifies the stacked stator sheets, so that the gel between the two stator sheets solidifies quickly.

[0020] In summary, the technical effects and advantages of the present invention are as follows:

[0021] 1. The present invention can prevent deformation of the stator sheets caused by excessive extrusion by applying pressure through the expansion of the airbag, ensuring the stability of the shape and size of the stator sheets. The expansion of the airbag can provide uniform pressure, ensuring that each stator sheet can be subjected to uniform pressure when stacked, thereby improving the overall tightness and stability. The expansion of the airbag applies pressure to the stator sheets again, so that the grooves and protrusions on the surface of the stator sheets can be tightly fixed together. The surface of the protrusion is adhered with adhesive, and the physical clamping of the grooves and the protrusions combined with the chemical bonding of the adhesive significantly enhances the connection strength between the stator sheets, ensuring the structural stability and reliability of the stator core. The use of adhesive can prevent the stator sheets from loosening during long-term operation or in a high-vibration environment, thereby improving the long-term stability and reliability of the stator core.

[0022] 2. In the present invention, after the stacked stator sheets are moved to the inside of the outer cover, the fan blows air into the inside of the outer cover through the air inlet pipe, and the heating plate heats the air inside the air inlet pipe. The hot air circulates inside the outer cover, and a notch is provided on the side of the outer cover close to the air inlet pipe, so that the hot air blown out of the outer cover can circulate inside the outer cover, and the inclined plate can change the direction so that the hot air blows on the stacked stator sheets, so that the solidification and curing between the layers of the stator sheets can be achieved. The circulation of the hot air can quickly increase the temperature of the stator sheets and accelerate the curing process of the gel. The uniform distribution of the hot air can ensure that the gel of each layer of the stator sheets is uniformly cured, thereby improving the overall performance of the stator core. The uniform curing of the gel can fill the tiny gaps between the stator sheets, reduce thermal resistance, and improve the heat dissipation performance.

[0023] 3. In the present invention, the chuck is driven to rotate by controlling the motor, and the bearing is set to assist the support chuck to rotate at the upper end of the push rod. As the chuck rotates, the position angle of the stator sheet can be adjusted, so that the corners of the stator sheet between each layer are micro-spot welded and fixed. Through multi-angle spot welding, the welding points can be evenly distributed, local stress concentration can be reduced, and deformation of the stator sheet during welding can be prevented. Multi-angle spot welding can ensure that the stator sheet has enough connection points in all directions, thereby improving the stability of the overall structure. Accurate multi-angle spot welding can reduce vibration and noise during motor operation and improve the running stability and reliability of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 A schematic diagram of the stereoscopic structure of a forming and stamping device for processing a stator core of a permanent magnet synchronous servo motor from a first perspective;

[0026] Figure 2 A schematic diagram of the stereoscopic structure of a forming and stamping device for processing a stator core of a permanent magnet synchronous servo motor from a second perspective;

[0027] Figure 3 It is a schematic diagram of a partial three-dimensional connection structure of a forming and stamping device used for processing a stator core of a permanent magnet synchronous servo motor;

[0028] Figure 4 It is a schematic diagram of the three-dimensional connection structure of the upper pressing mechanism;

[0029] Figure 5 It is a cross-sectional view of the three-dimensional connection structure of the pressing mechanism;

[0030] Figure 6 A schematic diagram of the third-view stereoscopic structure of a forming and stamping device for processing a stator core of a permanent magnet synchronous servo motor;

[0031] Figure 7 It is a schematic diagram of the local three-dimensional connection structure of the glue-fixing mechanism;

[0032] Figure 8 It is a schematic diagram of the three-dimensional connection structure of the glue fixing mechanism and the pushing mechanism;

[0033] Fig. 9 It is a schematic diagram of the three-dimensional connection structure of the push mechanism;

[0034] Fig.10 It is an exploded diagram of the three-dimensional connection structure of the push mechanism;

[0035] Fig.11 It is a schematic diagram of the three-dimensional connection structure of the glue-fixing mechanism;

[0036] Fig.12 It is a cross-sectional view of the three-dimensional connection structure of the glue-fixing mechanism;

[0037] Fig.13 It is a schematic diagram of the local three-dimensional connection structure of the glue-fixing mechanism;

[0038] Fig.14 It is a schematic diagram of the three-dimensional connection structure of the stamping mechanism;

[0039] Fig.15 It is a cross-sectional view of the three-dimensional connection structure of the stamping mechanism from the first perspective;

[0040] Fig.16 A sectional view of the three-dimensional connection structure of the stamping mechanism from a second viewing angle;

[0041] Fig.17 It is a sectional view of the three-dimensional connection structure of the stamping mechanism from a third perspective;

[0042] Fig.18It is a schematic diagram of the three-dimensional connection structure of the glue spraying mechanism;

[0043] Fig.19 It is a schematic diagram of the three-dimensional connection structure of the glue head tube and the glue spray head;

[0044] Fig. 20 It is a cross-sectional view of the three-dimensional connection structure of the stator segments.

[0045] In the figure: 1, support frame; 2, discharge port; 3, indentation box; 4, stamping part; 5, stamping mechanism; 52, die ring; 53, pressure ring; 54, shaft; 55, air pipe; 56, air bag; 57, second spring; 58, semi-ring pipe; 6, glue fixing mechanism; 61, outer cover; 62, top ring; 63, inclined plate; 64, laser welding gun; 65, air guide pipe; 67, air intake pipe; 68, heating plate; 7, upper pressure mechanism; 7 1. Press rod; 72. Groove; 8. Pressing mechanism; 80. Lower mold; 81. Glue inlet pipe; 82. Mold groove; 83. Plug rod; 84. Telescopic rod; 9. Push mechanism; 91. Push rod; 92. Control motor; 93. Bearing; 94. Support rib; 95. Chuck; 96. First spring; 97. Spacer; 10. Glue spraying mechanism; 101. Press block; 102. Glue spraying head; 103. Glue head tube; 12. Stator sheet. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] Example 1, Reference Figures 1 to 20 The forming and stamping device for processing the stator core of the permanent magnet synchronous servo motor shown in the figure comprises a support frame 1, a stamping part 4 is arranged at the upper end of the support frame 1, an indentation box 3 is arranged on one side of the support frame 1, an upper pressing mechanism 7 and a lower pressing mechanism 8 are arranged inside the indentation box 3, the upper pressing mechanism 7 is located at the upper end of the lower pressing mechanism 8, a stator sheet 12 is placed at the upper end of the lower pressing mechanism 8, the upper pressing mechanism 7 and the lower pressing mechanism 8 are used to perform groove pressing on the stator sheet 12, a stamping mechanism 5 for stamping the stator sheet 12 is arranged at the bottom of the stamping part 4, a solid glue mechanism 6 for reinforcing the stator core of the motor is arranged inside the support frame 1 and below the stamping part 4, a pushing mechanism 9 for supporting the stator sheets 12 to be stacked into the stator core of the motor is arranged on the bottom wall of the inner cavity of the support frame 1 and inside the solid glue mechanism 6, and two glue spraying mechanisms 10 for spraying glue on the surface of the stator sheet 12 are symmetrically arranged at the upper end of the support frame 1;

[0048] It is worth noting that after the metal sheet is punched to remove the scraps, it is sent to the upper end of the lower pressing mechanism 8, and then the upper pressing mechanism 7 moves downward to punch the stator sheet 12. The cooperation between the upper pressing mechanism 7 and the lower pressing mechanism 8 makes the upper end of the stator sheet 12 produce a groove and the lower end produce a bulge, and the surface of the bulge squeezed into the lower pressing mechanism 8 will be adhered with adhesive. When two stator sheets 12 are stacked together, they can be clamped together by the grooves and bulges produced by the upper pressing mechanism 7 and the lower pressing mechanism 8, and the surface of the bulge is adhered with adhesive so that the stacked stator sheets 12 can be tightly attached together;

[0049] The grooves and convex blocks formed by stamping the stator sheets 12 can ensure the precise alignment of each stator sheet 12 when stacking, thereby improving the assembly accuracy of the overall stator core, reducing vibration and noise during motor operation, and improving the running stability and reliability of the motor;

[0050] The design of the grooves and protrusions of the stator segments 12 not only provides physical snap-in, but also further enhances the connection strength through adhesive, making the stator core stronger. Through precise stamping and stacking, the air gap inside the stator core can be reduced, thereby reducing eddy current loss and hysteresis loss. The close contact between each stator segment 12 also helps to form a more uniform magnetic field distribution, further improving the performance of the motor.

[0051] After the stator sheet 12 is punched by the upper pressing mechanism 7 and the lower pressing mechanism 8, the stator sheet 12 will move to the bottom of the punching mechanism 5, and the punching mechanism 5 will punch the stator sheet 12 downward to cut the stator sheet 12, and the cut stator sheet 12 will fall onto the pushing mechanism 9, and the upper end of the pushing mechanism 9 is first in the same plane with the lower end of the glue spraying mechanism 10, so that the stator sheet 12 punched by the punching mechanism 5 will be in close contact with the upper end of the pushing mechanism 9, and then the pushing mechanism 9 moves downward so that the punched stator sheet 12 is stacked on the stator sheet 12 punched last time;

[0052] When the punching mechanism 5 moves upward, the glue spraying mechanism 10 sprays gel on the surface of the stamped stator sheet 12. When the punching mechanism 5 punches the lower stator sheet 12, the gel and the grooves and bumps punched on the surface of the upper pressing mechanism 7 and the lower pressing mechanism 8 can be stacked together. When the punching mechanism 5 punches the stator sheet 12, the two stacked stator sheets 12 are punched again, so that the multi-layer stacked stator sheets 12 are tightly fitted together.

[0053] Among them, the combination of spraying and secondary stamping not only fixes the stator sheets 12 through physical clamping grooves and bumps, but also further enhances the connection strength through the gel, making the stator core more solid. The tightly fitted stator sheets 12 can better withstand the mechanical stress during motor operation, reduce vibration and noise, and improve the running smoothness and reliability of the motor. In addition, the use of gel can fill the tiny gaps between the stator sheets 12, reduce thermal resistance and improve heat dissipation performance.

[0054] After the stamping is completed, the stator sheet 12 falls onto the pushing mechanism 9, and the pushing mechanism 9 will continue to move downward as the number of stacked stator sheets 12 increases. The pushing mechanism 9 is located inside the solid glue mechanism 6, and the stator sheet 12 will also move into the solid glue mechanism 6 as the pushing mechanism 9 moves. When the stator sheet 12 is stamped and enters the solid glue mechanism 6, the solid glue mechanism 6 first spot welds the corners of the stamped stator sheet 12, and the pushing mechanism 9 rotates the angle of the stator sheet 12 after each spot welding is completed, so that the stator sheet 12 is spot welded on multiple corners, and the solid glue mechanism 6 will also solidify the stacked stator sheets 12, so that the gel between the layers of the stator sheets 12 solidifies quickly.

[0055] Among them, spot welding can firmly connect the multi-layer stator sheets 12 together to improve the structural strength of the stator core. Spot welding can prevent the stator sheets from loosening during long-term operation or in a high-vibration environment, thereby ensuring the long-term stability and reliability of the stator core.

[0056] The glue solidifying mechanism 6 performs a solidification treatment on the stacked stator sheets 12, so that the gel between the layers of the stator sheets 12 solidifies quickly. The solidification treatment allows the gel to solidify quickly to form a solid whole, thereby improving the durability of the stator core and ensuring that the stator core can maintain good performance under various working conditions. In addition, the glue solidifying mechanism 6 performs a solidification treatment on the stacked stator sheets 12, so that the gel between the layers of the stator sheets 12 solidifies quickly. The use of the gel can fill the tiny gaps between the stator sheets, reduce thermal resistance, and improve heat dissipation performance. The solidification treatment allows the gel to be evenly distributed, further improving the heat dissipation performance of the stator core.

[0057] The pushing mechanism 9 rotates the angle of the stator sheet 12 after each spot welding is completed, so that the stator sheet 12 is spot welded on multiple corners. Through multi-angle spot welding, the welding points can be evenly distributed, local stress concentration can be reduced, and deformation of the stator sheet 12 during the welding process can be prevented. Multi-angle spot welding can ensure that the stator sheet 12 has sufficient connection points in all directions.

[0058] Moreover, the synergistic effect of the pushing mechanism 9 and the glue fixing mechanism 6 ensures the precise alignment of the stator sheets 12 during the stacking and welding process. The precise alignment and positioning can reduce error accumulation and ensure the assembly accuracy of the stator core. The precise alignment and stable structure can reduce the vibration and noise during the operation of the motor and improve the running smoothness and reliability of the motor.

[0059] Embodiment 2: Based on the upper pressing mechanism 7 and the lower pressing mechanism 8 provided in Embodiment 1, this embodiment provides a further technical solution for the upper pressing mechanism 7 and the lower pressing mechanism 8.

[0060] The pressing mechanism 7 includes a pressing rod 71, which is mounted on the lower end of the punch rod at the top of the inner wall of the indentation box 3, and a convex groove 72 is provided at the lower end of the pressing rod 71;

[0061] The pressing mechanism 8 comprises a lower mold 80 , which is fixedly mounted on the bottom of the inner wall of the indentation box 3 . A mold groove 82 is formed at the upper end of the lower mold 80 , and the positions of the mold groove 82 and the convex groove 72 correspond one to one.

[0062] It is worth noting that, after the metal sheet is removed from the scraps and moved to the upper end of the lower mold 80, the punching machine inside the indentation box 3 drives the pressing rod 71 to move downward, and the convex groove 72 cooperates with the die groove 82. When the convex groove 72 is punched onto the stator sheet 12, the surface of the stator sheet 12 is deformed, so that a groove is generated at the upper end of the stator sheet 12 and a convex block is generated at the lower end, and the convex block part will enter the die groove 82;

[0063] A plug rod 83 is disposed inside the lower mold 80 , a telescopic rod 84 is disposed at the bottom of the plug rod 83 , and a glue inlet pipe 81 communicating with the interior of the lower mold 80 is disposed on the outer surface of the lower mold 80 .

[0064] Among them, a plug rod 83 and a telescopic rod 84 are arranged inside the lower mold 80. The telescopic rod 84 slowly pushes the plug rod 83 to squeeze the gel into the mold groove 82 through the plug rod 83. When the above-mentioned protrusion enters the mold groove 82, it will be stuck with gel, and the set glue inlet pipe 81 is used to fill the gel inside the lower mold 80.

[0065] Among them, the convex groove 72 and the die groove 82 cooperate with each other to produce a groove at the upper end of the stator sheet 12 and a convex block at the lower end, and the convex block part enters the die groove 82. Through the design and stamping process of the convex groove 72 and the die groove 82, it is ensured that the shape and position of the groove and convex block of each stator sheet 12 are highly consistent. The precise design of the groove and convex block can ensure the alignment of the stator sheets when stacking, reduce error accumulation, and improve the performance of the overall stator core.

[0066] The telescopic rod 84 pushes the plug rod 83 to squeeze the gel into the mold groove 82 so that the convex part adheres to the gel. The use of gel can prevent the stator sheet 12 from loosening during long-term operation or high-vibration environment, ensuring the long-term stability and reliability of the stator core. The gel can fill the tiny gaps between the stator sheets 12, reduce thermal resistance, and improve heat dissipation performance, so that the motor can run stably in a high-temperature environment. The uniform distribution of gel can further improve the heat dissipation performance of the stator core and extend the service life of the motor.

[0067] Embodiment 3: Based on the pushing mechanism 9 and the glue fixing mechanism 6 provided in Embodiment 1, this embodiment provides a further technical solution of the pushing mechanism 9 and the glue fixing mechanism 6.

[0068] The glue spraying mechanism 10 includes a pressing block 101 , which is fixedly mounted on the upper end of the support frame 1 . A glue head tube 103 is disposed inside the pressing block 101 , and a glue spraying head 102 for uniformly spraying glue on the surface of the stator sheet 12 is disposed inside the glue head tube 103 .

[0069] It is worth mentioning that after the stator sheet 12 is stamped by the above-mentioned upper pressing mechanism 7 and the lower pressing mechanism 8, the stator sheet 12 will move between the two pressing blocks 101. The two pressing blocks 101 prevent the metal sheet 12 from warping after being stamped. When the stamping mechanism 5 completes the stamping of the stator sheet 12, the glue head tube 103 sprays the gel to the surface of the stator sheet 12 through the glue spray head 102. The gel is sprayed on the surface of the stator sheet 12.

[0070] The push mechanism 9 includes a push rod 91 , which is fixedly mounted on the bottom of the inner wall of the support frame 1 . A discharge port 2 is provided inside the support frame 1 . A bearing 93 is provided at the upper end of the push rod 91 , and a chuck 95 is provided at the upper end of the bearing 93 .

[0071] Among them, when the stamping mechanism 5 stamps the stator sheet 12, the upper end of the chuck 95 and the lower end of the glue spraying mechanism 10 are on the same plane, so that the stamped stator sheet 12 can fall into the upper end of the partition plate 97, and the first spring 96 is used to buffer the downward pressure of the stamping mechanism 5. As the stator sheet 12 continues to be stacked on the partition plate 97, the first spring 96 shrinks and the partition plate 97 is tightly attached to the support rib 94. At this time, the first spring 96 will not be able to play a buffering role. Because there are gaps between the stacked stator sheets 12, the stamping mechanism 5 can stamp the stacked stator sheets 12 tightly during stamping, and the push rod 91 moves downward according to the number of stacked layers of the stator sheets 12 to adjust the height of the chuck 95, which can ensure that the stator sheets 12 punched next time can be stacked together.

[0072] Among them, the use of the pressing block 101 can prevent the stator sheet 12 from warping after stamping, ensure that the surface of the stator sheet 12 is flat, and improve the surface quality of the stator core. After the stamping mechanism 5 completes the stamping of the stator sheet 12, the glue head tube 103 sprays gel on the surface of the stator sheet 12 through the glue spray head 102. The sprayed gel can enhance the connection strength between the stator sheets 12, ensuring that the multi-layer stator sheets 12 can be firmly bonded together when stacked. The use of gel can prevent the stator sheet 12 from loosening during long-term operation or high-vibration environment, and improve the stability and reliability of the stator core. The upper end of the chuck 95 and the lower end of the glue spraying mechanism 10 are on the same plane, so that the stamped stator sheet 12 can fall into the upper end of the partition plate 97. The first spring 96 is used to buffer the downward pressure of the stamping mechanism 5. As the stator sheets 12 continue to be stacked, the first spring 96 contracts, and the partition plate 97 is tightly attached to the support rib 94. The stamping mechanism 5 can stamp the stacked stator sheets 12 tightly during stamping.

[0073] The glue fixing mechanism 6 includes a top ring 62, which is fixedly mounted on the top of the inner wall of the support frame 1. Two air guide tubes 65 are symmetrically arranged inside the top ring 62, and laser welding guns 64 are arranged inside the two air guide tubes 65. An outer cover 61 is arranged at the lower end of the top ring 62, and a plurality of inclined plates 63 distributed in a ring array are arranged inside the outer cover 61.

[0074] A control motor 92 is provided between the chuck 95 and the push rod 91 , a spacer 97 is sleeved on the outer surface of the chuck 95 , a plurality of first springs 96 distributed in a circular array are provided between the spacer 97 and the chuck 95 , and a support rib 94 is provided at the upper end of the chuck 95 .

[0075] Among them, when the chuck 95 moves downward to drive the stator sheet 12 into the interior of the top ring 62, the laser welding gun 64 fixes the two stator sheets 12 by micro-spot welding through laser spot welding. After the laser welding gun 64 performs spot welding, the control motor 92 can drive the chuck 95 to rotate, and the provided bearing 93 can assist in supporting the chuck 95 to rotate at the upper end of the push rod 91. As the chuck 95 rotates, the position angle of the stator sheet 12 can be adjusted, thereby performing micro-spot welding and fixing the corners of the stator sheet 12 between each layer.

[0076] Among them, after the chuck 95 moves downward to drive the stator sheet 12 into the interior of the top ring 62, the laser welding gun 64 fixes the two stator sheets 12 by micro-spot welding through laser spot welding. Laser spot welding can provide high-strength welding in a very small area to ensure that the connection between the stator sheets 12 is firm and reliable. The heat-affected zone of laser spot welding is small, which can reduce thermal damage to the stator sheet 12 and maintain its original physical properties. In addition, laser spot welding can accurately control the welding position to ensure the precise alignment of each stator sheet 12 when stacked, reduce error accumulation, and improve the assembly accuracy of the stator core.

[0077] The motor 92 is controlled to drive the chuck 95 to rotate, and the bearing 93 is set to assist in supporting the chuck 95 to rotate at the upper end of the push rod 91. As the chuck 95 rotates, the position angle of the stator sheet 12 can be adjusted, so that the corners of the stator sheet 12 between each layer are micro-spot welded and fixed. Through multi-angle spot welding, the welding points can be evenly distributed, local stress concentration can be reduced, and deformation of the stator sheet 12 during welding can be prevented. Multi-angle spot welding can ensure that the stator sheet 12 has sufficient connection points in all directions, thereby improving the stability of the overall structure. Accurate multi-angle spot welding can reduce vibration and noise during motor operation, and improve the smoothness and reliability of the motor operation.

[0078] The air guide pipe 65 is connected to the interior of the outer cover 61 . An air inlet pipe 67 is provided on the outer surface of the outer cover 61 . A heating plate 68 is provided on the outer surface of the air inlet pipe 67 . A fan is provided at one end of the air inlet pipe 67 .

[0079] It is worth mentioning that after the stacked stator sheets 12 move to the inside of the outer cover 61, the fan blows air into the inside of the outer cover 61 through the air inlet pipe 67, and the heating plate 68 heats the air inside the air inlet pipe 67, and the hot air circulates inside the outer cover 61, and a notch is provided on the side of the outer cover 61 close to the air inlet pipe 67, so that the hot air blown out of the outer cover 61 can circulate inside the outer cover 61, and the inclined plate 63 can change the direction so that the hot air blows onto the stacked stator sheets 12, so that the layers of the stator sheets 12 are solidified.

[0080] Among them, the circulation of hot air can quickly increase the temperature of the stator sheet 12 and accelerate the curing process of the gel. The uniform distribution of hot air can ensure that the gel of each layer of stator sheet 12 is uniformly cured, thereby improving the overall performance of the stator core. The uniform curing of the gel can fill the tiny gaps between the stator sheets, reduce thermal resistance, and improve heat dissipation performance.

[0081] Embodiment 4: Based on the stamping mechanism 5 provided in Embodiment 1, this embodiment provides a further technical solution of the stamping mechanism 5.

[0082] The punching mechanism 5 includes a die ring 52 , which is fixedly mounted on the lower end of the punching part 4 and is vertically located directly above the chuck 95 .

[0083] A shaft 54 ​​is arranged in the middle of the inner cavity of the die ring 52 , a pressure ring 53 is slidably mounted on the outer surface of the shaft 54 ​​, and the pressure ring 53 is located inside the die ring 52 , a second spring 57 is arranged at the bottom of the pressure ring 53 , and the second spring 57 is sleeved on the outer surface of the shaft 54 ​​.

[0084] It is worth noting that when the stamping part 4 drives the die ring 52 to stamp the stator sheet 12 downward, the die ring 52 squeezes the stator sheet 12 for cutting, and the stamped stator sheet 12 will be stacked on the last stamped stator sheet 12, such as Fig. 20 The stacked stator sheets 12 shown can fit closely together.

[0085] An air bag 56 is arranged inside the pressure ring 53 , a semi-annular tube 58 is arranged inside the air bag 56 , and air holes are opened on the outer surface of the semi-annular tube 58 . An air tube 55 is arranged on the outer surface of the semi-annular tube 58 , and one end of the air tube 55 passes through the air bag 56 and the die ring 52 .

[0086] After the die ring 52 stamps the stator sheets 12, the die ring 52 is not lifted up quickly. Instead, the air pump connected to one end of the air pipe 55 ventilates the semi-annular tube 58 through the air pipe 55, and then ventilates the air bag 56 quickly through the semi-annular tube 58, so that the air bag 56 expands quickly. The expanded air bag 56 drives the pressure ring 53 to slide on the shaft 54, and the stacked stator sheets 12 are pressurized again through the pressure ring 53, and the stator sheets are compressed by the expansion of the air bag 56. The purpose of applying pressure on 12 is to prevent deformation of the stacked stator sheets 12 caused by excessive extrusion. Each time the stator sheets 12 are punched and stacked, the airbag 56 can apply pressure on the stator sheets 12 again by inflating and releasing the airbag, so that the grooves and protrusions on the surface of the stator sheets 12 can be tightly fixed together, and when the stator sheets 12 are processed by the upper pressing mechanism 7 and the lower pressing mechanism 8, the surfaces of the protrusions are adhered with adhesive, which can ensure that the stator core of the motor produced by stacking the stator sheets 12 is fastened and not easy to loosen.

[0087] Among them, the stamping part 4 drives the die ring 52 to punch the stator sheet 12 downward, and the die ring 52 squeezes the stator sheet 12 for cutting. The stamped stator sheet 12 is stacked on the stator sheet 12 punched last time. The precise cutting of the die ring 52 ensures that the size and shape of each stator sheet 12 are highly consistent, which improves the assembly accuracy of the stator core. The stamped stator sheets 12 can fit tightly together, reduce air gaps, reduce eddy current losses and hysteresis losses, and improve the efficiency and performance of the motor.

[0088] The expansion and pressure of the airbag 56 can prevent the stator sheet 12 from being deformed due to excessive extrusion, ensuring the stability of the shape and size of the stator sheet. The expansion of the airbag 56 can provide uniform pressure, ensuring that each stator sheet 12 is subjected to uniform pressure when stacked, thereby improving the overall tightness and stability. The expansion of the airbag 56 applies pressure to the stator sheet 12 again, so that the grooves and protrusions on the surface of the stator sheet 12 can be tightly fixed together. The surface of the protrusion is adhered with glue. The physical clamping of the grooves and the protrusions combined with the chemical bonding of the glue significantly enhances the connection strength between the stator sheets 12, ensuring the structural stability and reliability of the stator core. The use of glue can prevent the stator sheets from loosening during long-term operation or high-vibration environments, thereby improving the long-term stability and reliability of the stator core.

[0089] The present invention also provides a forming and stamping device method for processing a permanent magnet synchronous servo motor stator core. The motor stator core stamping and forming method is as follows:

[0090] S1. After the metal sheet is punched to remove the scraps, it is sent to the upper end of the lower pressing mechanism 8, and then the upper pressing mechanism 7 moves downward to punch the stator sheet 12. The cooperation between the upper pressing mechanism 7 and the lower pressing mechanism 8 makes the upper end of the stator sheet 12 produce a groove and the lower end of the protrusion, and the surface of the protrusion squeezed into the lower pressing mechanism 8 will be adhered with adhesive. When two stator sheets 12 are stacked together, they can be clamped together by the grooves and protrusions produced by the upper pressing mechanism 7 and the lower pressing mechanism 8, and the surface of the protrusion is adhered with adhesive so that the stacked stator sheets 12 can be tightly attached together;

[0091] S2. After the stator sheet 12 is punched by the upper pressing mechanism 7 and the lower pressing mechanism 8, the stator sheet 12 will move to the bottom of the punching mechanism 5, and the punching mechanism 5 will punch the stator sheet 12 downward to cut the stator sheet 12, and the cut stator sheet 12 will fall onto the pushing mechanism 9. The upper end of the pushing mechanism 9 is first in the same plane as the lower end of the glue spraying mechanism 10, so that the stator sheet 12 punched by the punching mechanism 5 will be in close contact with the upper end of the pushing mechanism 9, and then the pushing mechanism 9 moves downward so that the punched stator sheet 12 is stacked on the stator sheet 12 punched last time;

[0092] S3, when the punching mechanism 5 moves upward, the glue spraying mechanism 10 sprays gel on the surface of the stamped stator sheet 12. When the punching mechanism 5 punches the lower stator sheet 12, the gel and the grooves and bumps punched on the surface of the upper pressing mechanism 7 and the lower pressing mechanism 8 can be stacked together. When the punching mechanism 5 punches the stator sheet 12, the two stacked stator sheets 12 are punched again, so that the multi-layer stacked stator sheets 12 are tightly fitted together.

[0093] S4. After the stamping is completed, the stator sheet 12 falls onto the pushing mechanism 9, and the pushing mechanism 9 will continue to move downward as the number of stacked stator sheets 12 increases. The pushing mechanism 9 is located inside the solid glue mechanism 6, and the stator sheet 12 will also move into the solid glue mechanism 6 as the pushing mechanism 9 moves. When the stator sheet 12 is stamped and enters the solid glue mechanism 6, the solid glue mechanism 6 first spot welds the corners of the stamped stator sheet 12, and the pushing mechanism 9 rotates the angle of the stator sheet 12 after each spot welding is completed, so that the stator sheet 12 is spot welded on multiple corners, and the solid glue mechanism 6 will also solidify the stacked stator sheets 12, so that the gel between the layers of the stator sheets 12 solidifies quickly.

[0094] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A forming and stamping device for processing a stator core of a permanent magnet synchronous servo motor, comprising a support frame (1), a stamping part (4) being arranged at the upper end of the support frame (1), and an indentation box (3) being arranged at one side of the support frame (1), characterized in that: An upper pressing mechanism (7) and a lower pressing mechanism (8) are arranged inside the indentation box (3), the upper pressing mechanism (7) is located at the upper end of the lower pressing mechanism (8), a stator sheet (12) is placed at the upper end of the lower pressing mechanism (8), the upper pressing mechanism (7) and the lower pressing mechanism (8) are used to perform groove pressing on the stator sheet (12), a punching mechanism (5) for punching the stator sheet (12) is arranged at the bottom of the punching part (4), a glue fixing mechanism (6) for reinforcing the stator core of the motor is arranged inside the support frame (1) and below the punching part (4), a pushing mechanism (9) for supporting the stator sheets (12) to be stacked into the stator core of the motor is arranged on the bottom wall of the inner cavity of the support frame (1) and inside the glue fixing mechanism (6), and two glue spraying mechanisms (10) for spraying glue on the surface of the stator sheets (12) are symmetrically arranged at the upper end of the support frame (1); The pressing mechanism (7) comprises a pressing rod (71), the pressing rod (71) being mounted on the lower end of a punching machine rod at the top of the inner wall of the indentation box (3), and the lower end of the pressing rod (71) being provided with a convex groove (72); The pressing mechanism (8) comprises a lower mold member (80), the lower mold member (80) being fixedly mounted on the bottom of the inner wall of the indentation box (3), the upper end of the lower mold member (80) being provided with a mold groove (82), and the positions of the mold groove (82) and the convex groove (72) corresponding one to one; A plug rod (83) is arranged inside the lower mold (80), a telescopic rod (84) is arranged at the bottom of the plug rod (83), and a glue inlet pipe (81) communicating with the interior of the lower mold (80) is arranged on the outer surface of the lower mold (80); The punching mechanism (5) comprises a die ring (52), wherein the die ring (52) is fixedly mounted on the lower end of the punching part (4), and the die ring (52) is vertically located directly above the chuck (95); A shaft (54) is arranged in the middle of the inner cavity of the die ring (52); a pressure ring (53) is slidably mounted on the outer surface of the shaft rod (54), and the pressure ring (53) is located inside the die ring (52); a second spring (57) is arranged at the bottom of the pressure ring (53), and the second spring (57) is sleeved on the outer surface of the shaft rod (54); An air bag (56) is arranged inside the pressure ring (53), a semi-annular tube (58) is arranged inside the air bag (56), and air holes are opened on the outer surface of the semi-annular tube (58), and an air tube (55) is arranged on the outer surface of the semi-annular tube (58), and one end of the air tube (55) passes through the air bag (56) and the die ring (52).

2. The forming and punching device for processing the stator core of a permanent magnet synchronous servo motor according to claim 1, characterized in that: The pushing mechanism (9) comprises a push rod (91), wherein the push rod (91) is fixedly mounted on the bottom of the inner wall of the support frame (1), and a discharge port (2) is arranged inside the support frame (1). A bearing (93) is arranged at the upper end of the push rod (91), and a chuck (95) is arranged at the upper end of the bearing (93). A control motor (92) is arranged between the chuck (95) and the push rod (91), and a spacer (97) is sleeved on the outer surface of the chuck (95). A plurality of first springs (96) distributed in a ring array are arranged between the spacer (97) and the chuck (95), and a support rib (94) is arranged at the upper end of the chuck (95).

3. The forming and punching device for processing the stator core of a permanent magnet synchronous servo motor according to claim 1, characterized in that: The glue fixing mechanism (6) comprises a top ring (62), the top ring (62) being fixedly mounted on the top of the inner wall of the support frame (1), two air guide tubes (65) being symmetrically arranged inside the top ring (62), and laser welding guns (64) being arranged inside the two air guide tubes (65), an outer cover (61) being arranged at the lower end of the top ring (62), and a plurality of inclined plates (63) distributed in a ring array being arranged inside the outer cover (61).

4. The forming and punching device for processing the stator core of the permanent magnet synchronous servo motor according to claim 3 is characterized in that: The air guide pipe (65) is in communication with the interior of the outer cover (61); an air intake pipe (67) is provided on the outer surface of the outer cover (61); a heating plate (68) is provided on the outer surface of the air intake pipe (67); and a fan is provided at one end of the air intake pipe (67).

5. The forming and punching device for processing the stator core of the permanent magnet synchronous servo motor according to claim 1, characterized in that: The glue spraying mechanism (10) comprises a pressing block (101), the pressing block (101) being fixedly mounted on the upper end of the support frame (1), a glue head tube (103) being arranged inside the pressing block (101), and a glue spraying head (102) for uniformly spraying glue on the surface of the stator sheet (12) being arranged inside the glue head tube (103).

6. A method for forming and punching a permanent magnet synchronous servo motor stator core according to any one of claims 1 to 5, characterized in that: The stamping method of the motor stator core is as follows: S1, punching out the scraps of the metal sheet and then feeding it between the upper pressing mechanism (7) and the lower pressing mechanism (8), the upper pressing mechanism (7) punching the stator sheet (12) so that a groove is formed at the upper end of the stator sheet (12) and a bulge is formed at the lower end, and the surface of the bulge that is squeezed into the lower pressing mechanism (8) is adhered with adhesive; S2, the stator sheet (12) after being punched by the lower pressing mechanism (8) and the upper pressing mechanism (7) is transported to the lower end of the punching mechanism (5), and when the stator sheet (12) moves to the lower end of the punching mechanism (5), the punching mechanism (5) punches downward to cut the stator sheet (12), and the punched stator sheet (12) falls to the upper end of the push mechanism (9); S3. After the punching mechanism (5) completes punching of the stator sheet (12), the punching mechanism (5) moves upwards and the glue spraying mechanism (10) sprays gel on the surface of the stator sheet (12). When the next stator sheet (12) moves to the bottom of the punching mechanism (5), the two stator sheets (12) can be stacked together after being punched by the punching mechanism (5), and the glue solidifying mechanism (6) solidifies the stacked stator sheets (12), so that the gel between the two stator sheets (12) is quickly solidified.

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